gitweb / gitweb.perlon commit gitweb: Sort projects with undefined ages last (28dae18)
   1#!/usr/bin/perl
   2
   3# gitweb - simple web interface to track changes in git repositories
   4#
   5# (C) 2005-2006, Kay Sievers <kay.sievers@vrfy.org>
   6# (C) 2005, Christian Gierke
   7#
   8# This program is licensed under the GPLv2
   9
  10use 5.008;
  11use strict;
  12use warnings;
  13use CGI qw(:standard :escapeHTML -nosticky);
  14use CGI::Util qw(unescape);
  15use CGI::Carp qw(fatalsToBrowser set_message);
  16use Encode;
  17use Fcntl ':mode';
  18use File::Find qw();
  19use File::Basename qw(basename);
  20use Time::HiRes qw(gettimeofday tv_interval);
  21binmode STDOUT, ':utf8';
  22
  23our $t0 = [ gettimeofday() ];
  24our $number_of_git_cmds = 0;
  25
  26BEGIN {
  27        CGI->compile() if $ENV{'MOD_PERL'};
  28}
  29
  30our $version = "++GIT_VERSION++";
  31
  32our ($my_url, $my_uri, $base_url, $path_info, $home_link);
  33sub evaluate_uri {
  34        our $cgi;
  35
  36        our $my_url = $cgi->url();
  37        our $my_uri = $cgi->url(-absolute => 1);
  38
  39        # Base URL for relative URLs in gitweb ($logo, $favicon, ...),
  40        # needed and used only for URLs with nonempty PATH_INFO
  41        our $base_url = $my_url;
  42
  43        # When the script is used as DirectoryIndex, the URL does not contain the name
  44        # of the script file itself, and $cgi->url() fails to strip PATH_INFO, so we
  45        # have to do it ourselves. We make $path_info global because it's also used
  46        # later on.
  47        #
  48        # Another issue with the script being the DirectoryIndex is that the resulting
  49        # $my_url data is not the full script URL: this is good, because we want
  50        # generated links to keep implying the script name if it wasn't explicitly
  51        # indicated in the URL we're handling, but it means that $my_url cannot be used
  52        # as base URL.
  53        # Therefore, if we needed to strip PATH_INFO, then we know that we have
  54        # to build the base URL ourselves:
  55        our $path_info = decode_utf8($ENV{"PATH_INFO"});
  56        if ($path_info) {
  57                # $path_info has already been URL-decoded by the web server, but
  58                # $my_url and $my_uri have not. URL-decode them so we can properly
  59                # strip $path_info.
  60                $my_url = unescape($my_url);
  61                $my_uri = unescape($my_uri);
  62                if ($my_url =~ s,\Q$path_info\E$,, &&
  63                    $my_uri =~ s,\Q$path_info\E$,, &&
  64                    defined $ENV{'SCRIPT_NAME'}) {
  65                        $base_url = $cgi->url(-base => 1) . $ENV{'SCRIPT_NAME'};
  66                }
  67        }
  68
  69        # target of the home link on top of all pages
  70        our $home_link = $my_uri || "/";
  71}
  72
  73# core git executable to use
  74# this can just be "git" if your webserver has a sensible PATH
  75our $GIT = "++GIT_BINDIR++/git";
  76
  77# absolute fs-path which will be prepended to the project path
  78#our $projectroot = "/pub/scm";
  79our $projectroot = "++GITWEB_PROJECTROOT++";
  80
  81# fs traversing limit for getting project list
  82# the number is relative to the projectroot
  83our $project_maxdepth = "++GITWEB_PROJECT_MAXDEPTH++";
  84
  85# string of the home link on top of all pages
  86our $home_link_str = "++GITWEB_HOME_LINK_STR++";
  87
  88# name of your site or organization to appear in page titles
  89# replace this with something more descriptive for clearer bookmarks
  90our $site_name = "++GITWEB_SITENAME++"
  91                 || ($ENV{'SERVER_NAME'} || "Untitled") . " Git";
  92
  93# html snippet to include in the <head> section of each page
  94our $site_html_head_string = "++GITWEB_SITE_HTML_HEAD_STRING++";
  95# filename of html text to include at top of each page
  96our $site_header = "++GITWEB_SITE_HEADER++";
  97# html text to include at home page
  98our $home_text = "++GITWEB_HOMETEXT++";
  99# filename of html text to include at bottom of each page
 100our $site_footer = "++GITWEB_SITE_FOOTER++";
 101
 102# URI of stylesheets
 103our @stylesheets = ("++GITWEB_CSS++");
 104# URI of a single stylesheet, which can be overridden in GITWEB_CONFIG.
 105our $stylesheet = undef;
 106# URI of GIT logo (72x27 size)
 107our $logo = "++GITWEB_LOGO++";
 108# URI of GIT favicon, assumed to be image/png type
 109our $favicon = "++GITWEB_FAVICON++";
 110# URI of gitweb.js (JavaScript code for gitweb)
 111our $javascript = "++GITWEB_JS++";
 112
 113# URI and label (title) of GIT logo link
 114#our $logo_url = "http://www.kernel.org/pub/software/scm/git/docs/";
 115#our $logo_label = "git documentation";
 116our $logo_url = "http://git-scm.com/";
 117our $logo_label = "git homepage";
 118
 119# source of projects list
 120our $projects_list = "++GITWEB_LIST++";
 121
 122# the width (in characters) of the projects list "Description" column
 123our $projects_list_description_width = 25;
 124
 125# group projects by category on the projects list
 126# (enabled if this variable evaluates to true)
 127our $projects_list_group_categories = 0;
 128
 129# default category if none specified
 130# (leave the empty string for no category)
 131our $project_list_default_category = "";
 132
 133# default order of projects list
 134# valid values are none, project, descr, owner, and age
 135our $default_projects_order = "project";
 136
 137# show repository only if this file exists
 138# (only effective if this variable evaluates to true)
 139our $export_ok = "++GITWEB_EXPORT_OK++";
 140
 141# don't generate age column on the projects list page
 142our $omit_age_column = 0;
 143
 144# don't generate information about owners of repositories
 145our $omit_owner=0;
 146
 147# show repository only if this subroutine returns true
 148# when given the path to the project, for example:
 149#    sub { return -e "$_[0]/git-daemon-export-ok"; }
 150our $export_auth_hook = undef;
 151
 152# only allow viewing of repositories also shown on the overview page
 153our $strict_export = "++GITWEB_STRICT_EXPORT++";
 154
 155# list of git base URLs used for URL to where fetch project from,
 156# i.e. full URL is "$git_base_url/$project"
 157our @git_base_url_list = grep { $_ ne '' } ("++GITWEB_BASE_URL++");
 158
 159# default blob_plain mimetype and default charset for text/plain blob
 160our $default_blob_plain_mimetype = 'text/plain';
 161our $default_text_plain_charset  = undef;
 162
 163# file to use for guessing MIME types before trying /etc/mime.types
 164# (relative to the current git repository)
 165our $mimetypes_file = undef;
 166
 167# assume this charset if line contains non-UTF-8 characters;
 168# it should be valid encoding (see Encoding::Supported(3pm) for list),
 169# for which encoding all byte sequences are valid, for example
 170# 'iso-8859-1' aka 'latin1' (it is decoded without checking, so it
 171# could be even 'utf-8' for the old behavior)
 172our $fallback_encoding = 'latin1';
 173
 174# rename detection options for git-diff and git-diff-tree
 175# - default is '-M', with the cost proportional to
 176#   (number of removed files) * (number of new files).
 177# - more costly is '-C' (which implies '-M'), with the cost proportional to
 178#   (number of changed files + number of removed files) * (number of new files)
 179# - even more costly is '-C', '--find-copies-harder' with cost
 180#   (number of files in the original tree) * (number of new files)
 181# - one might want to include '-B' option, e.g. '-B', '-M'
 182our @diff_opts = ('-M'); # taken from git_commit
 183
 184# Disables features that would allow repository owners to inject script into
 185# the gitweb domain.
 186our $prevent_xss = 0;
 187
 188# Path to the highlight executable to use (must be the one from
 189# http://www.andre-simon.de due to assumptions about parameters and output).
 190# Useful if highlight is not installed on your webserver's PATH.
 191# [Default: highlight]
 192our $highlight_bin = "++HIGHLIGHT_BIN++";
 193
 194# information about snapshot formats that gitweb is capable of serving
 195our %known_snapshot_formats = (
 196        # name => {
 197        #       'display' => display name,
 198        #       'type' => mime type,
 199        #       'suffix' => filename suffix,
 200        #       'format' => --format for git-archive,
 201        #       'compressor' => [compressor command and arguments]
 202        #                       (array reference, optional)
 203        #       'disabled' => boolean (optional)}
 204        #
 205        'tgz' => {
 206                'display' => 'tar.gz',
 207                'type' => 'application/x-gzip',
 208                'suffix' => '.tar.gz',
 209                'format' => 'tar',
 210                'compressor' => ['gzip', '-n']},
 211
 212        'tbz2' => {
 213                'display' => 'tar.bz2',
 214                'type' => 'application/x-bzip2',
 215                'suffix' => '.tar.bz2',
 216                'format' => 'tar',
 217                'compressor' => ['bzip2']},
 218
 219        'txz' => {
 220                'display' => 'tar.xz',
 221                'type' => 'application/x-xz',
 222                'suffix' => '.tar.xz',
 223                'format' => 'tar',
 224                'compressor' => ['xz'],
 225                'disabled' => 1},
 226
 227        'zip' => {
 228                'display' => 'zip',
 229                'type' => 'application/x-zip',
 230                'suffix' => '.zip',
 231                'format' => 'zip'},
 232);
 233
 234# Aliases so we understand old gitweb.snapshot values in repository
 235# configuration.
 236our %known_snapshot_format_aliases = (
 237        'gzip'  => 'tgz',
 238        'bzip2' => 'tbz2',
 239        'xz'    => 'txz',
 240
 241        # backward compatibility: legacy gitweb config support
 242        'x-gzip' => undef, 'gz' => undef,
 243        'x-bzip2' => undef, 'bz2' => undef,
 244        'x-zip' => undef, '' => undef,
 245);
 246
 247# Pixel sizes for icons and avatars. If the default font sizes or lineheights
 248# are changed, it may be appropriate to change these values too via
 249# $GITWEB_CONFIG.
 250our %avatar_size = (
 251        'default' => 16,
 252        'double'  => 32
 253);
 254
 255# Used to set the maximum load that we will still respond to gitweb queries.
 256# If server load exceed this value then return "503 server busy" error.
 257# If gitweb cannot determined server load, it is taken to be 0.
 258# Leave it undefined (or set to 'undef') to turn off load checking.
 259our $maxload = 300;
 260
 261# configuration for 'highlight' (http://www.andre-simon.de/)
 262# match by basename
 263our %highlight_basename = (
 264        #'Program' => 'py',
 265        #'Library' => 'py',
 266        'SConstruct' => 'py', # SCons equivalent of Makefile
 267        'Makefile' => 'make',
 268);
 269# match by extension
 270our %highlight_ext = (
 271        # main extensions, defining name of syntax;
 272        # see files in /usr/share/highlight/langDefs/ directory
 273        (map { $_ => $_ } qw(py rb java css js tex bib xml awk bat ini spec tcl sql)),
 274        # alternate extensions, see /etc/highlight/filetypes.conf
 275        (map { $_ => 'c'   } qw(c h)),
 276        (map { $_ => 'sh'  } qw(sh bash zsh ksh)),
 277        (map { $_ => 'cpp' } qw(cpp cxx c++ cc)),
 278        (map { $_ => 'php' } qw(php php3 php4 php5 phps)),
 279        (map { $_ => 'pl'  } qw(pl perl pm)), # perhaps also 'cgi'
 280        (map { $_ => 'make'} qw(make mak mk)),
 281        (map { $_ => 'xml' } qw(xml xhtml html htm)),
 282);
 283
 284# You define site-wide feature defaults here; override them with
 285# $GITWEB_CONFIG as necessary.
 286our %feature = (
 287        # feature => {
 288        #       'sub' => feature-sub (subroutine),
 289        #       'override' => allow-override (boolean),
 290        #       'default' => [ default options...] (array reference)}
 291        #
 292        # if feature is overridable (it means that allow-override has true value),
 293        # then feature-sub will be called with default options as parameters;
 294        # return value of feature-sub indicates if to enable specified feature
 295        #
 296        # if there is no 'sub' key (no feature-sub), then feature cannot be
 297        # overridden
 298        #
 299        # use gitweb_get_feature(<feature>) to retrieve the <feature> value
 300        # (an array) or gitweb_check_feature(<feature>) to check if <feature>
 301        # is enabled
 302
 303        # Enable the 'blame' blob view, showing the last commit that modified
 304        # each line in the file. This can be very CPU-intensive.
 305
 306        # To enable system wide have in $GITWEB_CONFIG
 307        # $feature{'blame'}{'default'} = [1];
 308        # To have project specific config enable override in $GITWEB_CONFIG
 309        # $feature{'blame'}{'override'} = 1;
 310        # and in project config gitweb.blame = 0|1;
 311        'blame' => {
 312                'sub' => sub { feature_bool('blame', @_) },
 313                'override' => 0,
 314                'default' => [0]},
 315
 316        # Enable the 'snapshot' link, providing a compressed archive of any
 317        # tree. This can potentially generate high traffic if you have large
 318        # project.
 319
 320        # Value is a list of formats defined in %known_snapshot_formats that
 321        # you wish to offer.
 322        # To disable system wide have in $GITWEB_CONFIG
 323        # $feature{'snapshot'}{'default'} = [];
 324        # To have project specific config enable override in $GITWEB_CONFIG
 325        # $feature{'snapshot'}{'override'} = 1;
 326        # and in project config, a comma-separated list of formats or "none"
 327        # to disable.  Example: gitweb.snapshot = tbz2,zip;
 328        'snapshot' => {
 329                'sub' => \&feature_snapshot,
 330                'override' => 0,
 331                'default' => ['tgz']},
 332
 333        # Enable text search, which will list the commits which match author,
 334        # committer or commit text to a given string.  Enabled by default.
 335        # Project specific override is not supported.
 336        #
 337        # Note that this controls all search features, which means that if
 338        # it is disabled, then 'grep' and 'pickaxe' search would also be
 339        # disabled.
 340        'search' => {
 341                'override' => 0,
 342                'default' => [1]},
 343
 344        # Enable grep search, which will list the files in currently selected
 345        # tree containing the given string. Enabled by default. This can be
 346        # potentially CPU-intensive, of course.
 347        # Note that you need to have 'search' feature enabled too.
 348
 349        # To enable system wide have in $GITWEB_CONFIG
 350        # $feature{'grep'}{'default'} = [1];
 351        # To have project specific config enable override in $GITWEB_CONFIG
 352        # $feature{'grep'}{'override'} = 1;
 353        # and in project config gitweb.grep = 0|1;
 354        'grep' => {
 355                'sub' => sub { feature_bool('grep', @_) },
 356                'override' => 0,
 357                'default' => [1]},
 358
 359        # Enable the pickaxe search, which will list the commits that modified
 360        # a given string in a file. This can be practical and quite faster
 361        # alternative to 'blame', but still potentially CPU-intensive.
 362        # Note that you need to have 'search' feature enabled too.
 363
 364        # To enable system wide have in $GITWEB_CONFIG
 365        # $feature{'pickaxe'}{'default'} = [1];
 366        # To have project specific config enable override in $GITWEB_CONFIG
 367        # $feature{'pickaxe'}{'override'} = 1;
 368        # and in project config gitweb.pickaxe = 0|1;
 369        'pickaxe' => {
 370                'sub' => sub { feature_bool('pickaxe', @_) },
 371                'override' => 0,
 372                'default' => [1]},
 373
 374        # Enable showing size of blobs in a 'tree' view, in a separate
 375        # column, similar to what 'ls -l' does.  This cost a bit of IO.
 376
 377        # To disable system wide have in $GITWEB_CONFIG
 378        # $feature{'show-sizes'}{'default'} = [0];
 379        # To have project specific config enable override in $GITWEB_CONFIG
 380        # $feature{'show-sizes'}{'override'} = 1;
 381        # and in project config gitweb.showsizes = 0|1;
 382        'show-sizes' => {
 383                'sub' => sub { feature_bool('showsizes', @_) },
 384                'override' => 0,
 385                'default' => [1]},
 386
 387        # Make gitweb use an alternative format of the URLs which can be
 388        # more readable and natural-looking: project name is embedded
 389        # directly in the path and the query string contains other
 390        # auxiliary information. All gitweb installations recognize
 391        # URL in either format; this configures in which formats gitweb
 392        # generates links.
 393
 394        # To enable system wide have in $GITWEB_CONFIG
 395        # $feature{'pathinfo'}{'default'} = [1];
 396        # Project specific override is not supported.
 397
 398        # Note that you will need to change the default location of CSS,
 399        # favicon, logo and possibly other files to an absolute URL. Also,
 400        # if gitweb.cgi serves as your indexfile, you will need to force
 401        # $my_uri to contain the script name in your $GITWEB_CONFIG.
 402        'pathinfo' => {
 403                'override' => 0,
 404                'default' => [0]},
 405
 406        # Make gitweb consider projects in project root subdirectories
 407        # to be forks of existing projects. Given project $projname.git,
 408        # projects matching $projname/*.git will not be shown in the main
 409        # projects list, instead a '+' mark will be added to $projname
 410        # there and a 'forks' view will be enabled for the project, listing
 411        # all the forks. If project list is taken from a file, forks have
 412        # to be listed after the main project.
 413
 414        # To enable system wide have in $GITWEB_CONFIG
 415        # $feature{'forks'}{'default'} = [1];
 416        # Project specific override is not supported.
 417        'forks' => {
 418                'override' => 0,
 419                'default' => [0]},
 420
 421        # Insert custom links to the action bar of all project pages.
 422        # This enables you mainly to link to third-party scripts integrating
 423        # into gitweb; e.g. git-browser for graphical history representation
 424        # or custom web-based repository administration interface.
 425
 426        # The 'default' value consists of a list of triplets in the form
 427        # (label, link, position) where position is the label after which
 428        # to insert the link and link is a format string where %n expands
 429        # to the project name, %f to the project path within the filesystem,
 430        # %h to the current hash (h gitweb parameter) and %b to the current
 431        # hash base (hb gitweb parameter); %% expands to %.
 432
 433        # To enable system wide have in $GITWEB_CONFIG e.g.
 434        # $feature{'actions'}{'default'} = [('graphiclog',
 435        #       '/git-browser/by-commit.html?r=%n', 'summary')];
 436        # Project specific override is not supported.
 437        'actions' => {
 438                'override' => 0,
 439                'default' => []},
 440
 441        # Allow gitweb scan project content tags of project repository,
 442        # and display the popular Web 2.0-ish "tag cloud" near the projects
 443        # list.  Note that this is something COMPLETELY different from the
 444        # normal Git tags.
 445
 446        # gitweb by itself can show existing tags, but it does not handle
 447        # tagging itself; you need to do it externally, outside gitweb.
 448        # The format is described in git_get_project_ctags() subroutine.
 449        # You may want to install the HTML::TagCloud Perl module to get
 450        # a pretty tag cloud instead of just a list of tags.
 451
 452        # To enable system wide have in $GITWEB_CONFIG
 453        # $feature{'ctags'}{'default'} = [1];
 454        # Project specific override is not supported.
 455
 456        # In the future whether ctags editing is enabled might depend
 457        # on the value, but using 1 should always mean no editing of ctags.
 458        'ctags' => {
 459                'override' => 0,
 460                'default' => [0]},
 461
 462        # The maximum number of patches in a patchset generated in patch
 463        # view. Set this to 0 or undef to disable patch view, or to a
 464        # negative number to remove any limit.
 465
 466        # To disable system wide have in $GITWEB_CONFIG
 467        # $feature{'patches'}{'default'} = [0];
 468        # To have project specific config enable override in $GITWEB_CONFIG
 469        # $feature{'patches'}{'override'} = 1;
 470        # and in project config gitweb.patches = 0|n;
 471        # where n is the maximum number of patches allowed in a patchset.
 472        'patches' => {
 473                'sub' => \&feature_patches,
 474                'override' => 0,
 475                'default' => [16]},
 476
 477        # Avatar support. When this feature is enabled, views such as
 478        # shortlog or commit will display an avatar associated with
 479        # the email of the committer(s) and/or author(s).
 480
 481        # Currently available providers are gravatar and picon.
 482        # If an unknown provider is specified, the feature is disabled.
 483
 484        # Gravatar depends on Digest::MD5.
 485        # Picon currently relies on the indiana.edu database.
 486
 487        # To enable system wide have in $GITWEB_CONFIG
 488        # $feature{'avatar'}{'default'} = ['<provider>'];
 489        # where <provider> is either gravatar or picon.
 490        # To have project specific config enable override in $GITWEB_CONFIG
 491        # $feature{'avatar'}{'override'} = 1;
 492        # and in project config gitweb.avatar = <provider>;
 493        'avatar' => {
 494                'sub' => \&feature_avatar,
 495                'override' => 0,
 496                'default' => ['']},
 497
 498        # Enable displaying how much time and how many git commands
 499        # it took to generate and display page.  Disabled by default.
 500        # Project specific override is not supported.
 501        'timed' => {
 502                'override' => 0,
 503                'default' => [0]},
 504
 505        # Enable turning some links into links to actions which require
 506        # JavaScript to run (like 'blame_incremental').  Not enabled by
 507        # default.  Project specific override is currently not supported.
 508        'javascript-actions' => {
 509                'override' => 0,
 510                'default' => [0]},
 511
 512        # Enable and configure ability to change common timezone for dates
 513        # in gitweb output via JavaScript.  Enabled by default.
 514        # Project specific override is not supported.
 515        'javascript-timezone' => {
 516                'override' => 0,
 517                'default' => [
 518                        'local',     # default timezone: 'utc', 'local', or '(-|+)HHMM' format,
 519                                     # or undef to turn off this feature
 520                        'gitweb_tz', # name of cookie where to store selected timezone
 521                        'datetime',  # CSS class used to mark up dates for manipulation
 522                ]},
 523
 524        # Syntax highlighting support. This is based on Daniel Svensson's
 525        # and Sham Chukoury's work in gitweb-xmms2.git.
 526        # It requires the 'highlight' program present in $PATH,
 527        # and therefore is disabled by default.
 528
 529        # To enable system wide have in $GITWEB_CONFIG
 530        # $feature{'highlight'}{'default'} = [1];
 531
 532        'highlight' => {
 533                'sub' => sub { feature_bool('highlight', @_) },
 534                'override' => 0,
 535                'default' => [0]},
 536
 537        # Enable displaying of remote heads in the heads list
 538
 539        # To enable system wide have in $GITWEB_CONFIG
 540        # $feature{'remote_heads'}{'default'} = [1];
 541        # To have project specific config enable override in $GITWEB_CONFIG
 542        # $feature{'remote_heads'}{'override'} = 1;
 543        # and in project config gitweb.remote_heads = 0|1;
 544        'remote_heads' => {
 545                'sub' => sub { feature_bool('remote_heads', @_) },
 546                'override' => 0,
 547                'default' => [0]},
 548);
 549
 550sub gitweb_get_feature {
 551        my ($name) = @_;
 552        return unless exists $feature{$name};
 553        my ($sub, $override, @defaults) = (
 554                $feature{$name}{'sub'},
 555                $feature{$name}{'override'},
 556                @{$feature{$name}{'default'}});
 557        # project specific override is possible only if we have project
 558        our $git_dir; # global variable, declared later
 559        if (!$override || !defined $git_dir) {
 560                return @defaults;
 561        }
 562        if (!defined $sub) {
 563                warn "feature $name is not overridable";
 564                return @defaults;
 565        }
 566        return $sub->(@defaults);
 567}
 568
 569# A wrapper to check if a given feature is enabled.
 570# With this, you can say
 571#
 572#   my $bool_feat = gitweb_check_feature('bool_feat');
 573#   gitweb_check_feature('bool_feat') or somecode;
 574#
 575# instead of
 576#
 577#   my ($bool_feat) = gitweb_get_feature('bool_feat');
 578#   (gitweb_get_feature('bool_feat'))[0] or somecode;
 579#
 580sub gitweb_check_feature {
 581        return (gitweb_get_feature(@_))[0];
 582}
 583
 584
 585sub feature_bool {
 586        my $key = shift;
 587        my ($val) = git_get_project_config($key, '--bool');
 588
 589        if (!defined $val) {
 590                return ($_[0]);
 591        } elsif ($val eq 'true') {
 592                return (1);
 593        } elsif ($val eq 'false') {
 594                return (0);
 595        }
 596}
 597
 598sub feature_snapshot {
 599        my (@fmts) = @_;
 600
 601        my ($val) = git_get_project_config('snapshot');
 602
 603        if ($val) {
 604                @fmts = ($val eq 'none' ? () : split /\s*[,\s]\s*/, $val);
 605        }
 606
 607        return @fmts;
 608}
 609
 610sub feature_patches {
 611        my @val = (git_get_project_config('patches', '--int'));
 612
 613        if (@val) {
 614                return @val;
 615        }
 616
 617        return ($_[0]);
 618}
 619
 620sub feature_avatar {
 621        my @val = (git_get_project_config('avatar'));
 622
 623        return @val ? @val : @_;
 624}
 625
 626# checking HEAD file with -e is fragile if the repository was
 627# initialized long time ago (i.e. symlink HEAD) and was pack-ref'ed
 628# and then pruned.
 629sub check_head_link {
 630        my ($dir) = @_;
 631        my $headfile = "$dir/HEAD";
 632        return ((-e $headfile) ||
 633                (-l $headfile && readlink($headfile) =~ /^refs\/heads\//));
 634}
 635
 636sub check_export_ok {
 637        my ($dir) = @_;
 638        return (check_head_link($dir) &&
 639                (!$export_ok || -e "$dir/$export_ok") &&
 640                (!$export_auth_hook || $export_auth_hook->($dir)));
 641}
 642
 643# process alternate names for backward compatibility
 644# filter out unsupported (unknown) snapshot formats
 645sub filter_snapshot_fmts {
 646        my @fmts = @_;
 647
 648        @fmts = map {
 649                exists $known_snapshot_format_aliases{$_} ?
 650                       $known_snapshot_format_aliases{$_} : $_} @fmts;
 651        @fmts = grep {
 652                exists $known_snapshot_formats{$_} &&
 653                !$known_snapshot_formats{$_}{'disabled'}} @fmts;
 654}
 655
 656# If it is set to code reference, it is code that it is to be run once per
 657# request, allowing updating configurations that change with each request,
 658# while running other code in config file only once.
 659#
 660# Otherwise, if it is false then gitweb would process config file only once;
 661# if it is true then gitweb config would be run for each request.
 662our $per_request_config = 1;
 663
 664# read and parse gitweb config file given by its parameter.
 665# returns true on success, false on recoverable error, allowing
 666# to chain this subroutine, using first file that exists.
 667# dies on errors during parsing config file, as it is unrecoverable.
 668sub read_config_file {
 669        my $filename = shift;
 670        return unless defined $filename;
 671        # die if there are errors parsing config file
 672        if (-e $filename) {
 673                do $filename;
 674                die $@ if $@;
 675                return 1;
 676        }
 677        return;
 678}
 679
 680our ($GITWEB_CONFIG, $GITWEB_CONFIG_SYSTEM, $GITWEB_CONFIG_COMMON);
 681sub evaluate_gitweb_config {
 682        our $GITWEB_CONFIG = $ENV{'GITWEB_CONFIG'} || "++GITWEB_CONFIG++";
 683        our $GITWEB_CONFIG_SYSTEM = $ENV{'GITWEB_CONFIG_SYSTEM'} || "++GITWEB_CONFIG_SYSTEM++";
 684        our $GITWEB_CONFIG_COMMON = $ENV{'GITWEB_CONFIG_COMMON'} || "++GITWEB_CONFIG_COMMON++";
 685
 686        # Protect agains duplications of file names, to not read config twice.
 687        # Only one of $GITWEB_CONFIG and $GITWEB_CONFIG_SYSTEM is used, so
 688        # there possibility of duplication of filename there doesn't matter.
 689        $GITWEB_CONFIG = ""        if ($GITWEB_CONFIG eq $GITWEB_CONFIG_COMMON);
 690        $GITWEB_CONFIG_SYSTEM = "" if ($GITWEB_CONFIG_SYSTEM eq $GITWEB_CONFIG_COMMON);
 691
 692        # Common system-wide settings for convenience.
 693        # Those settings can be ovverriden by GITWEB_CONFIG or GITWEB_CONFIG_SYSTEM.
 694        read_config_file($GITWEB_CONFIG_COMMON);
 695
 696        # Use first config file that exists.  This means use the per-instance
 697        # GITWEB_CONFIG if exists, otherwise use GITWEB_SYSTEM_CONFIG.
 698        read_config_file($GITWEB_CONFIG) and return;
 699        read_config_file($GITWEB_CONFIG_SYSTEM);
 700}
 701
 702# Get loadavg of system, to compare against $maxload.
 703# Currently it requires '/proc/loadavg' present to get loadavg;
 704# if it is not present it returns 0, which means no load checking.
 705sub get_loadavg {
 706        if( -e '/proc/loadavg' ){
 707                open my $fd, '<', '/proc/loadavg'
 708                        or return 0;
 709                my @load = split(/\s+/, scalar <$fd>);
 710                close $fd;
 711
 712                # The first three columns measure CPU and IO utilization of the last one,
 713                # five, and 10 minute periods.  The fourth column shows the number of
 714                # currently running processes and the total number of processes in the m/n
 715                # format.  The last column displays the last process ID used.
 716                return $load[0] || 0;
 717        }
 718        # additional checks for load average should go here for things that don't export
 719        # /proc/loadavg
 720
 721        return 0;
 722}
 723
 724# version of the core git binary
 725our $git_version;
 726sub evaluate_git_version {
 727        our $git_version = qx("$GIT" --version) =~ m/git version (.*)$/ ? $1 : "unknown";
 728        $number_of_git_cmds++;
 729}
 730
 731sub check_loadavg {
 732        if (defined $maxload && get_loadavg() > $maxload) {
 733                die_error(503, "The load average on the server is too high");
 734        }
 735}
 736
 737# ======================================================================
 738# input validation and dispatch
 739
 740# input parameters can be collected from a variety of sources (presently, CGI
 741# and PATH_INFO), so we define an %input_params hash that collects them all
 742# together during validation: this allows subsequent uses (e.g. href()) to be
 743# agnostic of the parameter origin
 744
 745our %input_params = ();
 746
 747# input parameters are stored with the long parameter name as key. This will
 748# also be used in the href subroutine to convert parameters to their CGI
 749# equivalent, and since the href() usage is the most frequent one, we store
 750# the name -> CGI key mapping here, instead of the reverse.
 751#
 752# XXX: Warning: If you touch this, check the search form for updating,
 753# too.
 754
 755our @cgi_param_mapping = (
 756        project => "p",
 757        action => "a",
 758        file_name => "f",
 759        file_parent => "fp",
 760        hash => "h",
 761        hash_parent => "hp",
 762        hash_base => "hb",
 763        hash_parent_base => "hpb",
 764        page => "pg",
 765        order => "o",
 766        searchtext => "s",
 767        searchtype => "st",
 768        snapshot_format => "sf",
 769        extra_options => "opt",
 770        search_use_regexp => "sr",
 771        ctag => "by_tag",
 772        diff_style => "ds",
 773        project_filter => "pf",
 774        # this must be last entry (for manipulation from JavaScript)
 775        javascript => "js"
 776);
 777our %cgi_param_mapping = @cgi_param_mapping;
 778
 779# we will also need to know the possible actions, for validation
 780our %actions = (
 781        "blame" => \&git_blame,
 782        "blame_incremental" => \&git_blame_incremental,
 783        "blame_data" => \&git_blame_data,
 784        "blobdiff" => \&git_blobdiff,
 785        "blobdiff_plain" => \&git_blobdiff_plain,
 786        "blob" => \&git_blob,
 787        "blob_plain" => \&git_blob_plain,
 788        "commitdiff" => \&git_commitdiff,
 789        "commitdiff_plain" => \&git_commitdiff_plain,
 790        "commit" => \&git_commit,
 791        "forks" => \&git_forks,
 792        "heads" => \&git_heads,
 793        "history" => \&git_history,
 794        "log" => \&git_log,
 795        "patch" => \&git_patch,
 796        "patches" => \&git_patches,
 797        "remotes" => \&git_remotes,
 798        "rss" => \&git_rss,
 799        "atom" => \&git_atom,
 800        "search" => \&git_search,
 801        "search_help" => \&git_search_help,
 802        "shortlog" => \&git_shortlog,
 803        "summary" => \&git_summary,
 804        "tag" => \&git_tag,
 805        "tags" => \&git_tags,
 806        "tree" => \&git_tree,
 807        "snapshot" => \&git_snapshot,
 808        "object" => \&git_object,
 809        # those below don't need $project
 810        "opml" => \&git_opml,
 811        "project_list" => \&git_project_list,
 812        "project_index" => \&git_project_index,
 813);
 814
 815# finally, we have the hash of allowed extra_options for the commands that
 816# allow them
 817our %allowed_options = (
 818        "--no-merges" => [ qw(rss atom log shortlog history) ],
 819);
 820
 821# fill %input_params with the CGI parameters. All values except for 'opt'
 822# should be single values, but opt can be an array. We should probably
 823# build an array of parameters that can be multi-valued, but since for the time
 824# being it's only this one, we just single it out
 825sub evaluate_query_params {
 826        our $cgi;
 827
 828        while (my ($name, $symbol) = each %cgi_param_mapping) {
 829                if ($symbol eq 'opt') {
 830                        $input_params{$name} = [ map { decode_utf8($_) } $cgi->param($symbol) ];
 831                } else {
 832                        $input_params{$name} = decode_utf8($cgi->param($symbol));
 833                }
 834        }
 835}
 836
 837# now read PATH_INFO and update the parameter list for missing parameters
 838sub evaluate_path_info {
 839        return if defined $input_params{'project'};
 840        return if !$path_info;
 841        $path_info =~ s,^/+,,;
 842        return if !$path_info;
 843
 844        # find which part of PATH_INFO is project
 845        my $project = $path_info;
 846        $project =~ s,/+$,,;
 847        while ($project && !check_head_link("$projectroot/$project")) {
 848                $project =~ s,/*[^/]*$,,;
 849        }
 850        return unless $project;
 851        $input_params{'project'} = $project;
 852
 853        # do not change any parameters if an action is given using the query string
 854        return if $input_params{'action'};
 855        $path_info =~ s,^\Q$project\E/*,,;
 856
 857        # next, check if we have an action
 858        my $action = $path_info;
 859        $action =~ s,/.*$,,;
 860        if (exists $actions{$action}) {
 861                $path_info =~ s,^$action/*,,;
 862                $input_params{'action'} = $action;
 863        }
 864
 865        # list of actions that want hash_base instead of hash, but can have no
 866        # pathname (f) parameter
 867        my @wants_base = (
 868                'tree',
 869                'history',
 870        );
 871
 872        # we want to catch, among others
 873        # [$hash_parent_base[:$file_parent]..]$hash_parent[:$file_name]
 874        my ($parentrefname, $parentpathname, $refname, $pathname) =
 875                ($path_info =~ /^(?:(.+?)(?::(.+))?\.\.)?([^:]+?)?(?::(.+))?$/);
 876
 877        # first, analyze the 'current' part
 878        if (defined $pathname) {
 879                # we got "branch:filename" or "branch:dir/"
 880                # we could use git_get_type(branch:pathname), but:
 881                # - it needs $git_dir
 882                # - it does a git() call
 883                # - the convention of terminating directories with a slash
 884                #   makes it superfluous
 885                # - embedding the action in the PATH_INFO would make it even
 886                #   more superfluous
 887                $pathname =~ s,^/+,,;
 888                if (!$pathname || substr($pathname, -1) eq "/") {
 889                        $input_params{'action'} ||= "tree";
 890                        $pathname =~ s,/$,,;
 891                } else {
 892                        # the default action depends on whether we had parent info
 893                        # or not
 894                        if ($parentrefname) {
 895                                $input_params{'action'} ||= "blobdiff_plain";
 896                        } else {
 897                                $input_params{'action'} ||= "blob_plain";
 898                        }
 899                }
 900                $input_params{'hash_base'} ||= $refname;
 901                $input_params{'file_name'} ||= $pathname;
 902        } elsif (defined $refname) {
 903                # we got "branch". In this case we have to choose if we have to
 904                # set hash or hash_base.
 905                #
 906                # Most of the actions without a pathname only want hash to be
 907                # set, except for the ones specified in @wants_base that want
 908                # hash_base instead. It should also be noted that hand-crafted
 909                # links having 'history' as an action and no pathname or hash
 910                # set will fail, but that happens regardless of PATH_INFO.
 911                if (defined $parentrefname) {
 912                        # if there is parent let the default be 'shortlog' action
 913                        # (for http://git.example.com/repo.git/A..B links); if there
 914                        # is no parent, dispatch will detect type of object and set
 915                        # action appropriately if required (if action is not set)
 916                        $input_params{'action'} ||= "shortlog";
 917                }
 918                if ($input_params{'action'} &&
 919                    grep { $_ eq $input_params{'action'} } @wants_base) {
 920                        $input_params{'hash_base'} ||= $refname;
 921                } else {
 922                        $input_params{'hash'} ||= $refname;
 923                }
 924        }
 925
 926        # next, handle the 'parent' part, if present
 927        if (defined $parentrefname) {
 928                # a missing pathspec defaults to the 'current' filename, allowing e.g.
 929                # someproject/blobdiff/oldrev..newrev:/filename
 930                if ($parentpathname) {
 931                        $parentpathname =~ s,^/+,,;
 932                        $parentpathname =~ s,/$,,;
 933                        $input_params{'file_parent'} ||= $parentpathname;
 934                } else {
 935                        $input_params{'file_parent'} ||= $input_params{'file_name'};
 936                }
 937                # we assume that hash_parent_base is wanted if a path was specified,
 938                # or if the action wants hash_base instead of hash
 939                if (defined $input_params{'file_parent'} ||
 940                        grep { $_ eq $input_params{'action'} } @wants_base) {
 941                        $input_params{'hash_parent_base'} ||= $parentrefname;
 942                } else {
 943                        $input_params{'hash_parent'} ||= $parentrefname;
 944                }
 945        }
 946
 947        # for the snapshot action, we allow URLs in the form
 948        # $project/snapshot/$hash.ext
 949        # where .ext determines the snapshot and gets removed from the
 950        # passed $refname to provide the $hash.
 951        #
 952        # To be able to tell that $refname includes the format extension, we
 953        # require the following two conditions to be satisfied:
 954        # - the hash input parameter MUST have been set from the $refname part
 955        #   of the URL (i.e. they must be equal)
 956        # - the snapshot format MUST NOT have been defined already (e.g. from
 957        #   CGI parameter sf)
 958        # It's also useless to try any matching unless $refname has a dot,
 959        # so we check for that too
 960        if (defined $input_params{'action'} &&
 961                $input_params{'action'} eq 'snapshot' &&
 962                defined $refname && index($refname, '.') != -1 &&
 963                $refname eq $input_params{'hash'} &&
 964                !defined $input_params{'snapshot_format'}) {
 965                # We loop over the known snapshot formats, checking for
 966                # extensions. Allowed extensions are both the defined suffix
 967                # (which includes the initial dot already) and the snapshot
 968                # format key itself, with a prepended dot
 969                while (my ($fmt, $opt) = each %known_snapshot_formats) {
 970                        my $hash = $refname;
 971                        unless ($hash =~ s/(\Q$opt->{'suffix'}\E|\Q.$fmt\E)$//) {
 972                                next;
 973                        }
 974                        my $sfx = $1;
 975                        # a valid suffix was found, so set the snapshot format
 976                        # and reset the hash parameter
 977                        $input_params{'snapshot_format'} = $fmt;
 978                        $input_params{'hash'} = $hash;
 979                        # we also set the format suffix to the one requested
 980                        # in the URL: this way a request for e.g. .tgz returns
 981                        # a .tgz instead of a .tar.gz
 982                        $known_snapshot_formats{$fmt}{'suffix'} = $sfx;
 983                        last;
 984                }
 985        }
 986}
 987
 988our ($action, $project, $file_name, $file_parent, $hash, $hash_parent, $hash_base,
 989     $hash_parent_base, @extra_options, $page, $searchtype, $search_use_regexp,
 990     $searchtext, $search_regexp, $project_filter);
 991sub evaluate_and_validate_params {
 992        our $action = $input_params{'action'};
 993        if (defined $action) {
 994                if (!validate_action($action)) {
 995                        die_error(400, "Invalid action parameter");
 996                }
 997        }
 998
 999        # parameters which are pathnames
1000        our $project = $input_params{'project'};
1001        if (defined $project) {
1002                if (!validate_project($project)) {
1003                        undef $project;
1004                        die_error(404, "No such project");
1005                }
1006        }
1007
1008        our $project_filter = $input_params{'project_filter'};
1009        if (defined $project_filter) {
1010                if (!validate_pathname($project_filter)) {
1011                        die_error(404, "Invalid project_filter parameter");
1012                }
1013        }
1014
1015        our $file_name = $input_params{'file_name'};
1016        if (defined $file_name) {
1017                if (!validate_pathname($file_name)) {
1018                        die_error(400, "Invalid file parameter");
1019                }
1020        }
1021
1022        our $file_parent = $input_params{'file_parent'};
1023        if (defined $file_parent) {
1024                if (!validate_pathname($file_parent)) {
1025                        die_error(400, "Invalid file parent parameter");
1026                }
1027        }
1028
1029        # parameters which are refnames
1030        our $hash = $input_params{'hash'};
1031        if (defined $hash) {
1032                if (!validate_refname($hash)) {
1033                        die_error(400, "Invalid hash parameter");
1034                }
1035        }
1036
1037        our $hash_parent = $input_params{'hash_parent'};
1038        if (defined $hash_parent) {
1039                if (!validate_refname($hash_parent)) {
1040                        die_error(400, "Invalid hash parent parameter");
1041                }
1042        }
1043
1044        our $hash_base = $input_params{'hash_base'};
1045        if (defined $hash_base) {
1046                if (!validate_refname($hash_base)) {
1047                        die_error(400, "Invalid hash base parameter");
1048                }
1049        }
1050
1051        our @extra_options = @{$input_params{'extra_options'}};
1052        # @extra_options is always defined, since it can only be (currently) set from
1053        # CGI, and $cgi->param() returns the empty array in array context if the param
1054        # is not set
1055        foreach my $opt (@extra_options) {
1056                if (not exists $allowed_options{$opt}) {
1057                        die_error(400, "Invalid option parameter");
1058                }
1059                if (not grep(/^$action$/, @{$allowed_options{$opt}})) {
1060                        die_error(400, "Invalid option parameter for this action");
1061                }
1062        }
1063
1064        our $hash_parent_base = $input_params{'hash_parent_base'};
1065        if (defined $hash_parent_base) {
1066                if (!validate_refname($hash_parent_base)) {
1067                        die_error(400, "Invalid hash parent base parameter");
1068                }
1069        }
1070
1071        # other parameters
1072        our $page = $input_params{'page'};
1073        if (defined $page) {
1074                if ($page =~ m/[^0-9]/) {
1075                        die_error(400, "Invalid page parameter");
1076                }
1077        }
1078
1079        our $searchtype = $input_params{'searchtype'};
1080        if (defined $searchtype) {
1081                if ($searchtype =~ m/[^a-z]/) {
1082                        die_error(400, "Invalid searchtype parameter");
1083                }
1084        }
1085
1086        our $search_use_regexp = $input_params{'search_use_regexp'};
1087
1088        our $searchtext = $input_params{'searchtext'};
1089        our $search_regexp;
1090        if (defined $searchtext) {
1091                if (length($searchtext) < 2) {
1092                        die_error(403, "At least two characters are required for search parameter");
1093                }
1094                if ($search_use_regexp) {
1095                        $search_regexp = $searchtext;
1096                        if (!eval { qr/$search_regexp/; 1; }) {
1097                                (my $error = $@) =~ s/ at \S+ line \d+.*\n?//;
1098                                die_error(400, "Invalid search regexp '$search_regexp'",
1099                                          esc_html($error));
1100                        }
1101                } else {
1102                        $search_regexp = quotemeta $searchtext;
1103                }
1104        }
1105}
1106
1107# path to the current git repository
1108our $git_dir;
1109sub evaluate_git_dir {
1110        our $git_dir = "$projectroot/$project" if $project;
1111}
1112
1113our (@snapshot_fmts, $git_avatar);
1114sub configure_gitweb_features {
1115        # list of supported snapshot formats
1116        our @snapshot_fmts = gitweb_get_feature('snapshot');
1117        @snapshot_fmts = filter_snapshot_fmts(@snapshot_fmts);
1118
1119        # check that the avatar feature is set to a known provider name,
1120        # and for each provider check if the dependencies are satisfied.
1121        # if the provider name is invalid or the dependencies are not met,
1122        # reset $git_avatar to the empty string.
1123        our ($git_avatar) = gitweb_get_feature('avatar');
1124        if ($git_avatar eq 'gravatar') {
1125                $git_avatar = '' unless (eval { require Digest::MD5; 1; });
1126        } elsif ($git_avatar eq 'picon') {
1127                # no dependencies
1128        } else {
1129                $git_avatar = '';
1130        }
1131}
1132
1133# custom error handler: 'die <message>' is Internal Server Error
1134sub handle_errors_html {
1135        my $msg = shift; # it is already HTML escaped
1136
1137        # to avoid infinite loop where error occurs in die_error,
1138        # change handler to default handler, disabling handle_errors_html
1139        set_message("Error occured when inside die_error:\n$msg");
1140
1141        # you cannot jump out of die_error when called as error handler;
1142        # the subroutine set via CGI::Carp::set_message is called _after_
1143        # HTTP headers are already written, so it cannot write them itself
1144        die_error(undef, undef, $msg, -error_handler => 1, -no_http_header => 1);
1145}
1146set_message(\&handle_errors_html);
1147
1148# dispatch
1149sub dispatch {
1150        if (!defined $action) {
1151                if (defined $hash) {
1152                        $action = git_get_type($hash);
1153                        $action or die_error(404, "Object does not exist");
1154                } elsif (defined $hash_base && defined $file_name) {
1155                        $action = git_get_type("$hash_base:$file_name");
1156                        $action or die_error(404, "File or directory does not exist");
1157                } elsif (defined $project) {
1158                        $action = 'summary';
1159                } else {
1160                        $action = 'project_list';
1161                }
1162        }
1163        if (!defined($actions{$action})) {
1164                die_error(400, "Unknown action");
1165        }
1166        if ($action !~ m/^(?:opml|project_list|project_index)$/ &&
1167            !$project) {
1168                die_error(400, "Project needed");
1169        }
1170        $actions{$action}->();
1171}
1172
1173sub reset_timer {
1174        our $t0 = [ gettimeofday() ]
1175                if defined $t0;
1176        our $number_of_git_cmds = 0;
1177}
1178
1179our $first_request = 1;
1180sub run_request {
1181        reset_timer();
1182
1183        evaluate_uri();
1184        if ($first_request) {
1185                evaluate_gitweb_config();
1186                evaluate_git_version();
1187        }
1188        if ($per_request_config) {
1189                if (ref($per_request_config) eq 'CODE') {
1190                        $per_request_config->();
1191                } elsif (!$first_request) {
1192                        evaluate_gitweb_config();
1193                }
1194        }
1195        check_loadavg();
1196
1197        # $projectroot and $projects_list might be set in gitweb config file
1198        $projects_list ||= $projectroot;
1199
1200        evaluate_query_params();
1201        evaluate_path_info();
1202        evaluate_and_validate_params();
1203        evaluate_git_dir();
1204
1205        configure_gitweb_features();
1206
1207        dispatch();
1208}
1209
1210our $is_last_request = sub { 1 };
1211our ($pre_dispatch_hook, $post_dispatch_hook, $pre_listen_hook);
1212our $CGI = 'CGI';
1213our $cgi;
1214sub configure_as_fcgi {
1215        require CGI::Fast;
1216        our $CGI = 'CGI::Fast';
1217
1218        my $request_number = 0;
1219        # let each child service 100 requests
1220        our $is_last_request = sub { ++$request_number > 100 };
1221}
1222sub evaluate_argv {
1223        my $script_name = $ENV{'SCRIPT_NAME'} || $ENV{'SCRIPT_FILENAME'} || __FILE__;
1224        configure_as_fcgi()
1225                if $script_name =~ /\.fcgi$/;
1226
1227        return unless (@ARGV);
1228
1229        require Getopt::Long;
1230        Getopt::Long::GetOptions(
1231                'fastcgi|fcgi|f' => \&configure_as_fcgi,
1232                'nproc|n=i' => sub {
1233                        my ($arg, $val) = @_;
1234                        return unless eval { require FCGI::ProcManager; 1; };
1235                        my $proc_manager = FCGI::ProcManager->new({
1236                                n_processes => $val,
1237                        });
1238                        our $pre_listen_hook    = sub { $proc_manager->pm_manage()        };
1239                        our $pre_dispatch_hook  = sub { $proc_manager->pm_pre_dispatch()  };
1240                        our $post_dispatch_hook = sub { $proc_manager->pm_post_dispatch() };
1241                },
1242        );
1243}
1244
1245sub run {
1246        evaluate_argv();
1247
1248        $first_request = 1;
1249        $pre_listen_hook->()
1250                if $pre_listen_hook;
1251
1252 REQUEST:
1253        while ($cgi = $CGI->new()) {
1254                $pre_dispatch_hook->()
1255                        if $pre_dispatch_hook;
1256
1257                run_request();
1258
1259                $post_dispatch_hook->()
1260                        if $post_dispatch_hook;
1261                $first_request = 0;
1262
1263                last REQUEST if ($is_last_request->());
1264        }
1265
1266 DONE_GITWEB:
1267        1;
1268}
1269
1270run();
1271
1272if (defined caller) {
1273        # wrapped in a subroutine processing requests,
1274        # e.g. mod_perl with ModPerl::Registry, or PSGI with Plack::App::WrapCGI
1275        return;
1276} else {
1277        # pure CGI script, serving single request
1278        exit;
1279}
1280
1281## ======================================================================
1282## action links
1283
1284# possible values of extra options
1285# -full => 0|1      - use absolute/full URL ($my_uri/$my_url as base)
1286# -replay => 1      - start from a current view (replay with modifications)
1287# -path_info => 0|1 - don't use/use path_info URL (if possible)
1288# -anchor => ANCHOR - add #ANCHOR to end of URL, implies -replay if used alone
1289sub href {
1290        my %params = @_;
1291        # default is to use -absolute url() i.e. $my_uri
1292        my $href = $params{-full} ? $my_url : $my_uri;
1293
1294        # implicit -replay, must be first of implicit params
1295        $params{-replay} = 1 if (keys %params == 1 && $params{-anchor});
1296
1297        $params{'project'} = $project unless exists $params{'project'};
1298
1299        if ($params{-replay}) {
1300                while (my ($name, $symbol) = each %cgi_param_mapping) {
1301                        if (!exists $params{$name}) {
1302                                $params{$name} = $input_params{$name};
1303                        }
1304                }
1305        }
1306
1307        my $use_pathinfo = gitweb_check_feature('pathinfo');
1308        if (defined $params{'project'} &&
1309            (exists $params{-path_info} ? $params{-path_info} : $use_pathinfo)) {
1310                # try to put as many parameters as possible in PATH_INFO:
1311                #   - project name
1312                #   - action
1313                #   - hash_parent or hash_parent_base:/file_parent
1314                #   - hash or hash_base:/filename
1315                #   - the snapshot_format as an appropriate suffix
1316
1317                # When the script is the root DirectoryIndex for the domain,
1318                # $href here would be something like http://gitweb.example.com/
1319                # Thus, we strip any trailing / from $href, to spare us double
1320                # slashes in the final URL
1321                $href =~ s,/$,,;
1322
1323                # Then add the project name, if present
1324                $href .= "/".esc_path_info($params{'project'});
1325                delete $params{'project'};
1326
1327                # since we destructively absorb parameters, we keep this
1328                # boolean that remembers if we're handling a snapshot
1329                my $is_snapshot = $params{'action'} eq 'snapshot';
1330
1331                # Summary just uses the project path URL, any other action is
1332                # added to the URL
1333                if (defined $params{'action'}) {
1334                        $href .= "/".esc_path_info($params{'action'})
1335                                unless $params{'action'} eq 'summary';
1336                        delete $params{'action'};
1337                }
1338
1339                # Next, we put hash_parent_base:/file_parent..hash_base:/file_name,
1340                # stripping nonexistent or useless pieces
1341                $href .= "/" if ($params{'hash_base'} || $params{'hash_parent_base'}
1342                        || $params{'hash_parent'} || $params{'hash'});
1343                if (defined $params{'hash_base'}) {
1344                        if (defined $params{'hash_parent_base'}) {
1345                                $href .= esc_path_info($params{'hash_parent_base'});
1346                                # skip the file_parent if it's the same as the file_name
1347                                if (defined $params{'file_parent'}) {
1348                                        if (defined $params{'file_name'} && $params{'file_parent'} eq $params{'file_name'}) {
1349                                                delete $params{'file_parent'};
1350                                        } elsif ($params{'file_parent'} !~ /\.\./) {
1351                                                $href .= ":/".esc_path_info($params{'file_parent'});
1352                                                delete $params{'file_parent'};
1353                                        }
1354                                }
1355                                $href .= "..";
1356                                delete $params{'hash_parent'};
1357                                delete $params{'hash_parent_base'};
1358                        } elsif (defined $params{'hash_parent'}) {
1359                                $href .= esc_path_info($params{'hash_parent'}). "..";
1360                                delete $params{'hash_parent'};
1361                        }
1362
1363                        $href .= esc_path_info($params{'hash_base'});
1364                        if (defined $params{'file_name'} && $params{'file_name'} !~ /\.\./) {
1365                                $href .= ":/".esc_path_info($params{'file_name'});
1366                                delete $params{'file_name'};
1367                        }
1368                        delete $params{'hash'};
1369                        delete $params{'hash_base'};
1370                } elsif (defined $params{'hash'}) {
1371                        $href .= esc_path_info($params{'hash'});
1372                        delete $params{'hash'};
1373                }
1374
1375                # If the action was a snapshot, we can absorb the
1376                # snapshot_format parameter too
1377                if ($is_snapshot) {
1378                        my $fmt = $params{'snapshot_format'};
1379                        # snapshot_format should always be defined when href()
1380                        # is called, but just in case some code forgets, we
1381                        # fall back to the default
1382                        $fmt ||= $snapshot_fmts[0];
1383                        $href .= $known_snapshot_formats{$fmt}{'suffix'};
1384                        delete $params{'snapshot_format'};
1385                }
1386        }
1387
1388        # now encode the parameters explicitly
1389        my @result = ();
1390        for (my $i = 0; $i < @cgi_param_mapping; $i += 2) {
1391                my ($name, $symbol) = ($cgi_param_mapping[$i], $cgi_param_mapping[$i+1]);
1392                if (defined $params{$name}) {
1393                        if (ref($params{$name}) eq "ARRAY") {
1394                                foreach my $par (@{$params{$name}}) {
1395                                        push @result, $symbol . "=" . esc_param($par);
1396                                }
1397                        } else {
1398                                push @result, $symbol . "=" . esc_param($params{$name});
1399                        }
1400                }
1401        }
1402        $href .= "?" . join(';', @result) if scalar @result;
1403
1404        # final transformation: trailing spaces must be escaped (URI-encoded)
1405        $href =~ s/(\s+)$/CGI::escape($1)/e;
1406
1407        if ($params{-anchor}) {
1408                $href .= "#".esc_param($params{-anchor});
1409        }
1410
1411        return $href;
1412}
1413
1414
1415## ======================================================================
1416## validation, quoting/unquoting and escaping
1417
1418sub validate_action {
1419        my $input = shift || return undef;
1420        return undef unless exists $actions{$input};
1421        return $input;
1422}
1423
1424sub validate_project {
1425        my $input = shift || return undef;
1426        if (!validate_pathname($input) ||
1427                !(-d "$projectroot/$input") ||
1428                !check_export_ok("$projectroot/$input") ||
1429                ($strict_export && !project_in_list($input))) {
1430                return undef;
1431        } else {
1432                return $input;
1433        }
1434}
1435
1436sub validate_pathname {
1437        my $input = shift || return undef;
1438
1439        # no '.' or '..' as elements of path, i.e. no '.' nor '..'
1440        # at the beginning, at the end, and between slashes.
1441        # also this catches doubled slashes
1442        if ($input =~ m!(^|/)(|\.|\.\.)(/|$)!) {
1443                return undef;
1444        }
1445        # no null characters
1446        if ($input =~ m!\0!) {
1447                return undef;
1448        }
1449        return $input;
1450}
1451
1452sub validate_refname {
1453        my $input = shift || return undef;
1454
1455        # textual hashes are O.K.
1456        if ($input =~ m/^[0-9a-fA-F]{40}$/) {
1457                return $input;
1458        }
1459        # it must be correct pathname
1460        $input = validate_pathname($input)
1461                or return undef;
1462        # restrictions on ref name according to git-check-ref-format
1463        if ($input =~ m!(/\.|\.\.|[\000-\040\177 ~^:?*\[]|/$)!) {
1464                return undef;
1465        }
1466        return $input;
1467}
1468
1469# decode sequences of octets in utf8 into Perl's internal form,
1470# which is utf-8 with utf8 flag set if needed.  gitweb writes out
1471# in utf-8 thanks to "binmode STDOUT, ':utf8'" at beginning
1472sub to_utf8 {
1473        my $str = shift;
1474        return undef unless defined $str;
1475
1476        if (utf8::is_utf8($str) || utf8::decode($str)) {
1477                return $str;
1478        } else {
1479                return decode($fallback_encoding, $str, Encode::FB_DEFAULT);
1480        }
1481}
1482
1483# quote unsafe chars, but keep the slash, even when it's not
1484# correct, but quoted slashes look too horrible in bookmarks
1485sub esc_param {
1486        my $str = shift;
1487        return undef unless defined $str;
1488        $str =~ s/([^A-Za-z0-9\-_.~()\/:@ ]+)/CGI::escape($1)/eg;
1489        $str =~ s/ /\+/g;
1490        return $str;
1491}
1492
1493# the quoting rules for path_info fragment are slightly different
1494sub esc_path_info {
1495        my $str = shift;
1496        return undef unless defined $str;
1497
1498        # path_info doesn't treat '+' as space (specially), but '?' must be escaped
1499        $str =~ s/([^A-Za-z0-9\-_.~();\/;:@&= +]+)/CGI::escape($1)/eg;
1500
1501        return $str;
1502}
1503
1504# quote unsafe chars in whole URL, so some characters cannot be quoted
1505sub esc_url {
1506        my $str = shift;
1507        return undef unless defined $str;
1508        $str =~ s/([^A-Za-z0-9\-_.~();\/;?:@&= ]+)/CGI::escape($1)/eg;
1509        $str =~ s/ /\+/g;
1510        return $str;
1511}
1512
1513# quote unsafe characters in HTML attributes
1514sub esc_attr {
1515
1516        # for XHTML conformance escaping '"' to '&quot;' is not enough
1517        return esc_html(@_);
1518}
1519
1520# replace invalid utf8 character with SUBSTITUTION sequence
1521sub esc_html {
1522        my $str = shift;
1523        my %opts = @_;
1524
1525        return undef unless defined $str;
1526
1527        $str = to_utf8($str);
1528        $str = $cgi->escapeHTML($str);
1529        if ($opts{'-nbsp'}) {
1530                $str =~ s/ /&nbsp;/g;
1531        }
1532        $str =~ s|([[:cntrl:]])|(($1 ne "\t") ? quot_cec($1) : $1)|eg;
1533        return $str;
1534}
1535
1536# quote control characters and escape filename to HTML
1537sub esc_path {
1538        my $str = shift;
1539        my %opts = @_;
1540
1541        return undef unless defined $str;
1542
1543        $str = to_utf8($str);
1544        $str = $cgi->escapeHTML($str);
1545        if ($opts{'-nbsp'}) {
1546                $str =~ s/ /&nbsp;/g;
1547        }
1548        $str =~ s|([[:cntrl:]])|quot_cec($1)|eg;
1549        return $str;
1550}
1551
1552# Sanitize for use in XHTML + application/xml+xhtm (valid XML 1.0)
1553sub sanitize {
1554        my $str = shift;
1555
1556        return undef unless defined $str;
1557
1558        $str = to_utf8($str);
1559        $str =~ s|([[:cntrl:]])|($1 =~ /[\t\n\r]/ ? $1 : quot_cec($1))|eg;
1560        return $str;
1561}
1562
1563# Make control characters "printable", using character escape codes (CEC)
1564sub quot_cec {
1565        my $cntrl = shift;
1566        my %opts = @_;
1567        my %es = ( # character escape codes, aka escape sequences
1568                "\t" => '\t',   # tab            (HT)
1569                "\n" => '\n',   # line feed      (LF)
1570                "\r" => '\r',   # carrige return (CR)
1571                "\f" => '\f',   # form feed      (FF)
1572                "\b" => '\b',   # backspace      (BS)
1573                "\a" => '\a',   # alarm (bell)   (BEL)
1574                "\e" => '\e',   # escape         (ESC)
1575                "\013" => '\v', # vertical tab   (VT)
1576                "\000" => '\0', # nul character  (NUL)
1577        );
1578        my $chr = ( (exists $es{$cntrl})
1579                    ? $es{$cntrl}
1580                    : sprintf('\%2x', ord($cntrl)) );
1581        if ($opts{-nohtml}) {
1582                return $chr;
1583        } else {
1584                return "<span class=\"cntrl\">$chr</span>";
1585        }
1586}
1587
1588# Alternatively use unicode control pictures codepoints,
1589# Unicode "printable representation" (PR)
1590sub quot_upr {
1591        my $cntrl = shift;
1592        my %opts = @_;
1593
1594        my $chr = sprintf('&#%04d;', 0x2400+ord($cntrl));
1595        if ($opts{-nohtml}) {
1596                return $chr;
1597        } else {
1598                return "<span class=\"cntrl\">$chr</span>";
1599        }
1600}
1601
1602# git may return quoted and escaped filenames
1603sub unquote {
1604        my $str = shift;
1605
1606        sub unq {
1607                my $seq = shift;
1608                my %es = ( # character escape codes, aka escape sequences
1609                        't' => "\t",   # tab            (HT, TAB)
1610                        'n' => "\n",   # newline        (NL)
1611                        'r' => "\r",   # return         (CR)
1612                        'f' => "\f",   # form feed      (FF)
1613                        'b' => "\b",   # backspace      (BS)
1614                        'a' => "\a",   # alarm (bell)   (BEL)
1615                        'e' => "\e",   # escape         (ESC)
1616                        'v' => "\013", # vertical tab   (VT)
1617                );
1618
1619                if ($seq =~ m/^[0-7]{1,3}$/) {
1620                        # octal char sequence
1621                        return chr(oct($seq));
1622                } elsif (exists $es{$seq}) {
1623                        # C escape sequence, aka character escape code
1624                        return $es{$seq};
1625                }
1626                # quoted ordinary character
1627                return $seq;
1628        }
1629
1630        if ($str =~ m/^"(.*)"$/) {
1631                # needs unquoting
1632                $str = $1;
1633                $str =~ s/\\([^0-7]|[0-7]{1,3})/unq($1)/eg;
1634        }
1635        return $str;
1636}
1637
1638# escape tabs (convert tabs to spaces)
1639sub untabify {
1640        my $line = shift;
1641
1642        while ((my $pos = index($line, "\t")) != -1) {
1643                if (my $count = (8 - ($pos % 8))) {
1644                        my $spaces = ' ' x $count;
1645                        $line =~ s/\t/$spaces/;
1646                }
1647        }
1648
1649        return $line;
1650}
1651
1652sub project_in_list {
1653        my $project = shift;
1654        my @list = git_get_projects_list();
1655        return @list && scalar(grep { $_->{'path'} eq $project } @list);
1656}
1657
1658## ----------------------------------------------------------------------
1659## HTML aware string manipulation
1660
1661# Try to chop given string on a word boundary between position
1662# $len and $len+$add_len. If there is no word boundary there,
1663# chop at $len+$add_len. Do not chop if chopped part plus ellipsis
1664# (marking chopped part) would be longer than given string.
1665sub chop_str {
1666        my $str = shift;
1667        my $len = shift;
1668        my $add_len = shift || 10;
1669        my $where = shift || 'right'; # 'left' | 'center' | 'right'
1670
1671        # Make sure perl knows it is utf8 encoded so we don't
1672        # cut in the middle of a utf8 multibyte char.
1673        $str = to_utf8($str);
1674
1675        # allow only $len chars, but don't cut a word if it would fit in $add_len
1676        # if it doesn't fit, cut it if it's still longer than the dots we would add
1677        # remove chopped character entities entirely
1678
1679        # when chopping in the middle, distribute $len into left and right part
1680        # return early if chopping wouldn't make string shorter
1681        if ($where eq 'center') {
1682                return $str if ($len + 5 >= length($str)); # filler is length 5
1683                $len = int($len/2);
1684        } else {
1685                return $str if ($len + 4 >= length($str)); # filler is length 4
1686        }
1687
1688        # regexps: ending and beginning with word part up to $add_len
1689        my $endre = qr/.{$len}\w{0,$add_len}/;
1690        my $begre = qr/\w{0,$add_len}.{$len}/;
1691
1692        if ($where eq 'left') {
1693                $str =~ m/^(.*?)($begre)$/;
1694                my ($lead, $body) = ($1, $2);
1695                if (length($lead) > 4) {
1696                        $lead = " ...";
1697                }
1698                return "$lead$body";
1699
1700        } elsif ($where eq 'center') {
1701                $str =~ m/^($endre)(.*)$/;
1702                my ($left, $str)  = ($1, $2);
1703                $str =~ m/^(.*?)($begre)$/;
1704                my ($mid, $right) = ($1, $2);
1705                if (length($mid) > 5) {
1706                        $mid = " ... ";
1707                }
1708                return "$left$mid$right";
1709
1710        } else {
1711                $str =~ m/^($endre)(.*)$/;
1712                my $body = $1;
1713                my $tail = $2;
1714                if (length($tail) > 4) {
1715                        $tail = "... ";
1716                }
1717                return "$body$tail";
1718        }
1719}
1720
1721# takes the same arguments as chop_str, but also wraps a <span> around the
1722# result with a title attribute if it does get chopped. Additionally, the
1723# string is HTML-escaped.
1724sub chop_and_escape_str {
1725        my ($str) = @_;
1726
1727        my $chopped = chop_str(@_);
1728        $str = to_utf8($str);
1729        if ($chopped eq $str) {
1730                return esc_html($chopped);
1731        } else {
1732                $str =~ s/[[:cntrl:]]/?/g;
1733                return $cgi->span({-title=>$str}, esc_html($chopped));
1734        }
1735}
1736
1737# Highlight selected fragments of string, using given CSS class,
1738# and escape HTML.  It is assumed that fragments do not overlap.
1739# Regions are passed as list of pairs (array references).
1740#
1741# Example: esc_html_hl_regions("foobar", "mark", [ 0, 3 ]) returns
1742# '<span class="mark">foo</span>bar'
1743sub esc_html_hl_regions {
1744        my ($str, $css_class, @sel) = @_;
1745        my %opts = grep { ref($_) ne 'ARRAY' } @sel;
1746        @sel     = grep { ref($_) eq 'ARRAY' } @sel;
1747        return esc_html($str, %opts) unless @sel;
1748
1749        my $out = '';
1750        my $pos = 0;
1751
1752        for my $s (@sel) {
1753                my ($begin, $end) = @$s;
1754
1755                # Don't create empty <span> elements.
1756                next if $end <= $begin;
1757
1758                my $escaped = esc_html(substr($str, $begin, $end - $begin),
1759                                       %opts);
1760
1761                $out .= esc_html(substr($str, $pos, $begin - $pos), %opts)
1762                        if ($begin - $pos > 0);
1763                $out .= $cgi->span({-class => $css_class}, $escaped);
1764
1765                $pos = $end;
1766        }
1767        $out .= esc_html(substr($str, $pos), %opts)
1768                if ($pos < length($str));
1769
1770        return $out;
1771}
1772
1773# return positions of beginning and end of each match
1774sub matchpos_list {
1775        my ($str, $regexp) = @_;
1776        return unless (defined $str && defined $regexp);
1777
1778        my @matches;
1779        while ($str =~ /$regexp/g) {
1780                push @matches, [$-[0], $+[0]];
1781        }
1782        return @matches;
1783}
1784
1785# highlight match (if any), and escape HTML
1786sub esc_html_match_hl {
1787        my ($str, $regexp) = @_;
1788        return esc_html($str) unless defined $regexp;
1789
1790        my @matches = matchpos_list($str, $regexp);
1791        return esc_html($str) unless @matches;
1792
1793        return esc_html_hl_regions($str, 'match', @matches);
1794}
1795
1796
1797# highlight match (if any) of shortened string, and escape HTML
1798sub esc_html_match_hl_chopped {
1799        my ($str, $chopped, $regexp) = @_;
1800        return esc_html_match_hl($str, $regexp) unless defined $chopped;
1801
1802        my @matches = matchpos_list($str, $regexp);
1803        return esc_html($chopped) unless @matches;
1804
1805        # filter matches so that we mark chopped string
1806        my $tail = "... "; # see chop_str
1807        unless ($chopped =~ s/\Q$tail\E$//) {
1808                $tail = '';
1809        }
1810        my $chop_len = length($chopped);
1811        my $tail_len = length($tail);
1812        my @filtered;
1813
1814        for my $m (@matches) {
1815                if ($m->[0] > $chop_len) {
1816                        push @filtered, [ $chop_len, $chop_len + $tail_len ] if ($tail_len > 0);
1817                        last;
1818                } elsif ($m->[1] > $chop_len) {
1819                        push @filtered, [ $m->[0], $chop_len + $tail_len ];
1820                        last;
1821                }
1822                push @filtered, $m;
1823        }
1824
1825        return esc_html_hl_regions($chopped . $tail, 'match', @filtered);
1826}
1827
1828## ----------------------------------------------------------------------
1829## functions returning short strings
1830
1831# CSS class for given age value (in seconds)
1832sub age_class {
1833        my $age = shift;
1834
1835        if (!defined $age) {
1836                return "noage";
1837        } elsif ($age < 60*60*2) {
1838                return "age0";
1839        } elsif ($age < 60*60*24*2) {
1840                return "age1";
1841        } else {
1842                return "age2";
1843        }
1844}
1845
1846# convert age in seconds to "nn units ago" string
1847sub age_string {
1848        my $age = shift;
1849        my $age_str;
1850
1851        if ($age > 60*60*24*365*2) {
1852                $age_str = (int $age/60/60/24/365);
1853                $age_str .= " years ago";
1854        } elsif ($age > 60*60*24*(365/12)*2) {
1855                $age_str = int $age/60/60/24/(365/12);
1856                $age_str .= " months ago";
1857        } elsif ($age > 60*60*24*7*2) {
1858                $age_str = int $age/60/60/24/7;
1859                $age_str .= " weeks ago";
1860        } elsif ($age > 60*60*24*2) {
1861                $age_str = int $age/60/60/24;
1862                $age_str .= " days ago";
1863        } elsif ($age > 60*60*2) {
1864                $age_str = int $age/60/60;
1865                $age_str .= " hours ago";
1866        } elsif ($age > 60*2) {
1867                $age_str = int $age/60;
1868                $age_str .= " min ago";
1869        } elsif ($age > 2) {
1870                $age_str = int $age;
1871                $age_str .= " sec ago";
1872        } else {
1873                $age_str .= " right now";
1874        }
1875        return $age_str;
1876}
1877
1878use constant {
1879        S_IFINVALID => 0030000,
1880        S_IFGITLINK => 0160000,
1881};
1882
1883# submodule/subproject, a commit object reference
1884sub S_ISGITLINK {
1885        my $mode = shift;
1886
1887        return (($mode & S_IFMT) == S_IFGITLINK)
1888}
1889
1890# convert file mode in octal to symbolic file mode string
1891sub mode_str {
1892        my $mode = oct shift;
1893
1894        if (S_ISGITLINK($mode)) {
1895                return 'm---------';
1896        } elsif (S_ISDIR($mode & S_IFMT)) {
1897                return 'drwxr-xr-x';
1898        } elsif (S_ISLNK($mode)) {
1899                return 'lrwxrwxrwx';
1900        } elsif (S_ISREG($mode)) {
1901                # git cares only about the executable bit
1902                if ($mode & S_IXUSR) {
1903                        return '-rwxr-xr-x';
1904                } else {
1905                        return '-rw-r--r--';
1906                };
1907        } else {
1908                return '----------';
1909        }
1910}
1911
1912# convert file mode in octal to file type string
1913sub file_type {
1914        my $mode = shift;
1915
1916        if ($mode !~ m/^[0-7]+$/) {
1917                return $mode;
1918        } else {
1919                $mode = oct $mode;
1920        }
1921
1922        if (S_ISGITLINK($mode)) {
1923                return "submodule";
1924        } elsif (S_ISDIR($mode & S_IFMT)) {
1925                return "directory";
1926        } elsif (S_ISLNK($mode)) {
1927                return "symlink";
1928        } elsif (S_ISREG($mode)) {
1929                return "file";
1930        } else {
1931                return "unknown";
1932        }
1933}
1934
1935# convert file mode in octal to file type description string
1936sub file_type_long {
1937        my $mode = shift;
1938
1939        if ($mode !~ m/^[0-7]+$/) {
1940                return $mode;
1941        } else {
1942                $mode = oct $mode;
1943        }
1944
1945        if (S_ISGITLINK($mode)) {
1946                return "submodule";
1947        } elsif (S_ISDIR($mode & S_IFMT)) {
1948                return "directory";
1949        } elsif (S_ISLNK($mode)) {
1950                return "symlink";
1951        } elsif (S_ISREG($mode)) {
1952                if ($mode & S_IXUSR) {
1953                        return "executable";
1954                } else {
1955                        return "file";
1956                };
1957        } else {
1958                return "unknown";
1959        }
1960}
1961
1962
1963## ----------------------------------------------------------------------
1964## functions returning short HTML fragments, or transforming HTML fragments
1965## which don't belong to other sections
1966
1967# format line of commit message.
1968sub format_log_line_html {
1969        my $line = shift;
1970
1971        $line = esc_html($line, -nbsp=>1);
1972        $line =~ s{\b([0-9a-fA-F]{8,40})\b}{
1973                $cgi->a({-href => href(action=>"object", hash=>$1),
1974                                        -class => "text"}, $1);
1975        }eg;
1976
1977        return $line;
1978}
1979
1980# format marker of refs pointing to given object
1981
1982# the destination action is chosen based on object type and current context:
1983# - for annotated tags, we choose the tag view unless it's the current view
1984#   already, in which case we go to shortlog view
1985# - for other refs, we keep the current view if we're in history, shortlog or
1986#   log view, and select shortlog otherwise
1987sub format_ref_marker {
1988        my ($refs, $id) = @_;
1989        my $markers = '';
1990
1991        if (defined $refs->{$id}) {
1992                foreach my $ref (@{$refs->{$id}}) {
1993                        # this code exploits the fact that non-lightweight tags are the
1994                        # only indirect objects, and that they are the only objects for which
1995                        # we want to use tag instead of shortlog as action
1996                        my ($type, $name) = qw();
1997                        my $indirect = ($ref =~ s/\^\{\}$//);
1998                        # e.g. tags/v2.6.11 or heads/next
1999                        if ($ref =~ m!^(.*?)s?/(.*)$!) {
2000                                $type = $1;
2001                                $name = $2;
2002                        } else {
2003                                $type = "ref";
2004                                $name = $ref;
2005                        }
2006
2007                        my $class = $type;
2008                        $class .= " indirect" if $indirect;
2009
2010                        my $dest_action = "shortlog";
2011
2012                        if ($indirect) {
2013                                $dest_action = "tag" unless $action eq "tag";
2014                        } elsif ($action =~ /^(history|(short)?log)$/) {
2015                                $dest_action = $action;
2016                        }
2017
2018                        my $dest = "";
2019                        $dest .= "refs/" unless $ref =~ m!^refs/!;
2020                        $dest .= $ref;
2021
2022                        my $link = $cgi->a({
2023                                -href => href(
2024                                        action=>$dest_action,
2025                                        hash=>$dest
2026                                )}, $name);
2027
2028                        $markers .= " <span class=\"".esc_attr($class)."\" title=\"".esc_attr($ref)."\">" .
2029                                $link . "</span>";
2030                }
2031        }
2032
2033        if ($markers) {
2034                return ' <span class="refs">'. $markers . '</span>';
2035        } else {
2036                return "";
2037        }
2038}
2039
2040# format, perhaps shortened and with markers, title line
2041sub format_subject_html {
2042        my ($long, $short, $href, $extra) = @_;
2043        $extra = '' unless defined($extra);
2044
2045        if (length($short) < length($long)) {
2046                $long =~ s/[[:cntrl:]]/?/g;
2047                return $cgi->a({-href => $href, -class => "list subject",
2048                                -title => to_utf8($long)},
2049                       esc_html($short)) . $extra;
2050        } else {
2051                return $cgi->a({-href => $href, -class => "list subject"},
2052                       esc_html($long)) . $extra;
2053        }
2054}
2055
2056# Rather than recomputing the url for an email multiple times, we cache it
2057# after the first hit. This gives a visible benefit in views where the avatar
2058# for the same email is used repeatedly (e.g. shortlog).
2059# The cache is shared by all avatar engines (currently gravatar only), which
2060# are free to use it as preferred. Since only one avatar engine is used for any
2061# given page, there's no risk for cache conflicts.
2062our %avatar_cache = ();
2063
2064# Compute the picon url for a given email, by using the picon search service over at
2065# http://www.cs.indiana.edu/picons/search.html
2066sub picon_url {
2067        my $email = lc shift;
2068        if (!$avatar_cache{$email}) {
2069                my ($user, $domain) = split('@', $email);
2070                $avatar_cache{$email} =
2071                        "http://www.cs.indiana.edu/cgi-pub/kinzler/piconsearch.cgi/" .
2072                        "$domain/$user/" .
2073                        "users+domains+unknown/up/single";
2074        }
2075        return $avatar_cache{$email};
2076}
2077
2078# Compute the gravatar url for a given email, if it's not in the cache already.
2079# Gravatar stores only the part of the URL before the size, since that's the
2080# one computationally more expensive. This also allows reuse of the cache for
2081# different sizes (for this particular engine).
2082sub gravatar_url {
2083        my $email = lc shift;
2084        my $size = shift;
2085        $avatar_cache{$email} ||=
2086                "http://www.gravatar.com/avatar/" .
2087                        Digest::MD5::md5_hex($email) . "?s=";
2088        return $avatar_cache{$email} . $size;
2089}
2090
2091# Insert an avatar for the given $email at the given $size if the feature
2092# is enabled.
2093sub git_get_avatar {
2094        my ($email, %opts) = @_;
2095        my $pre_white  = ($opts{-pad_before} ? "&nbsp;" : "");
2096        my $post_white = ($opts{-pad_after}  ? "&nbsp;" : "");
2097        $opts{-size} ||= 'default';
2098        my $size = $avatar_size{$opts{-size}} || $avatar_size{'default'};
2099        my $url = "";
2100        if ($git_avatar eq 'gravatar') {
2101                $url = gravatar_url($email, $size);
2102        } elsif ($git_avatar eq 'picon') {
2103                $url = picon_url($email);
2104        }
2105        # Other providers can be added by extending the if chain, defining $url
2106        # as needed. If no variant puts something in $url, we assume avatars
2107        # are completely disabled/unavailable.
2108        if ($url) {
2109                return $pre_white .
2110                       "<img width=\"$size\" " .
2111                            "class=\"avatar\" " .
2112                            "src=\"".esc_url($url)."\" " .
2113                            "alt=\"\" " .
2114                       "/>" . $post_white;
2115        } else {
2116                return "";
2117        }
2118}
2119
2120sub format_search_author {
2121        my ($author, $searchtype, $displaytext) = @_;
2122        my $have_search = gitweb_check_feature('search');
2123
2124        if ($have_search) {
2125                my $performed = "";
2126                if ($searchtype eq 'author') {
2127                        $performed = "authored";
2128                } elsif ($searchtype eq 'committer') {
2129                        $performed = "committed";
2130                }
2131
2132                return $cgi->a({-href => href(action=>"search", hash=>$hash,
2133                                searchtext=>$author,
2134                                searchtype=>$searchtype), class=>"list",
2135                                title=>"Search for commits $performed by $author"},
2136                                $displaytext);
2137
2138        } else {
2139                return $displaytext;
2140        }
2141}
2142
2143# format the author name of the given commit with the given tag
2144# the author name is chopped and escaped according to the other
2145# optional parameters (see chop_str).
2146sub format_author_html {
2147        my $tag = shift;
2148        my $co = shift;
2149        my $author = chop_and_escape_str($co->{'author_name'}, @_);
2150        return "<$tag class=\"author\">" .
2151               format_search_author($co->{'author_name'}, "author",
2152                       git_get_avatar($co->{'author_email'}, -pad_after => 1) .
2153                       $author) .
2154               "</$tag>";
2155}
2156
2157# format git diff header line, i.e. "diff --(git|combined|cc) ..."
2158sub format_git_diff_header_line {
2159        my $line = shift;
2160        my $diffinfo = shift;
2161        my ($from, $to) = @_;
2162
2163        if ($diffinfo->{'nparents'}) {
2164                # combined diff
2165                $line =~ s!^(diff (.*?) )"?.*$!$1!;
2166                if ($to->{'href'}) {
2167                        $line .= $cgi->a({-href => $to->{'href'}, -class => "path"},
2168                                         esc_path($to->{'file'}));
2169                } else { # file was deleted (no href)
2170                        $line .= esc_path($to->{'file'});
2171                }
2172        } else {
2173                # "ordinary" diff
2174                $line =~ s!^(diff (.*?) )"?a/.*$!$1!;
2175                if ($from->{'href'}) {
2176                        $line .= $cgi->a({-href => $from->{'href'}, -class => "path"},
2177                                         'a/' . esc_path($from->{'file'}));
2178                } else { # file was added (no href)
2179                        $line .= 'a/' . esc_path($from->{'file'});
2180                }
2181                $line .= ' ';
2182                if ($to->{'href'}) {
2183                        $line .= $cgi->a({-href => $to->{'href'}, -class => "path"},
2184                                         'b/' . esc_path($to->{'file'}));
2185                } else { # file was deleted
2186                        $line .= 'b/' . esc_path($to->{'file'});
2187                }
2188        }
2189
2190        return "<div class=\"diff header\">$line</div>\n";
2191}
2192
2193# format extended diff header line, before patch itself
2194sub format_extended_diff_header_line {
2195        my $line = shift;
2196        my $diffinfo = shift;
2197        my ($from, $to) = @_;
2198
2199        # match <path>
2200        if ($line =~ s!^((copy|rename) from ).*$!$1! && $from->{'href'}) {
2201                $line .= $cgi->a({-href=>$from->{'href'}, -class=>"path"},
2202                                       esc_path($from->{'file'}));
2203        }
2204        if ($line =~ s!^((copy|rename) to ).*$!$1! && $to->{'href'}) {
2205                $line .= $cgi->a({-href=>$to->{'href'}, -class=>"path"},
2206                                 esc_path($to->{'file'}));
2207        }
2208        # match single <mode>
2209        if ($line =~ m/\s(\d{6})$/) {
2210                $line .= '<span class="info"> (' .
2211                         file_type_long($1) .
2212                         ')</span>';
2213        }
2214        # match <hash>
2215        if ($line =~ m/^index [0-9a-fA-F]{40},[0-9a-fA-F]{40}/) {
2216                # can match only for combined diff
2217                $line = 'index ';
2218                for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
2219                        if ($from->{'href'}[$i]) {
2220                                $line .= $cgi->a({-href=>$from->{'href'}[$i],
2221                                                  -class=>"hash"},
2222                                                 substr($diffinfo->{'from_id'}[$i],0,7));
2223                        } else {
2224                                $line .= '0' x 7;
2225                        }
2226                        # separator
2227                        $line .= ',' if ($i < $diffinfo->{'nparents'} - 1);
2228                }
2229                $line .= '..';
2230                if ($to->{'href'}) {
2231                        $line .= $cgi->a({-href=>$to->{'href'}, -class=>"hash"},
2232                                         substr($diffinfo->{'to_id'},0,7));
2233                } else {
2234                        $line .= '0' x 7;
2235                }
2236
2237        } elsif ($line =~ m/^index [0-9a-fA-F]{40}..[0-9a-fA-F]{40}/) {
2238                # can match only for ordinary diff
2239                my ($from_link, $to_link);
2240                if ($from->{'href'}) {
2241                        $from_link = $cgi->a({-href=>$from->{'href'}, -class=>"hash"},
2242                                             substr($diffinfo->{'from_id'},0,7));
2243                } else {
2244                        $from_link = '0' x 7;
2245                }
2246                if ($to->{'href'}) {
2247                        $to_link = $cgi->a({-href=>$to->{'href'}, -class=>"hash"},
2248                                           substr($diffinfo->{'to_id'},0,7));
2249                } else {
2250                        $to_link = '0' x 7;
2251                }
2252                my ($from_id, $to_id) = ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
2253                $line =~ s!$from_id\.\.$to_id!$from_link..$to_link!;
2254        }
2255
2256        return $line . "<br/>\n";
2257}
2258
2259# format from-file/to-file diff header
2260sub format_diff_from_to_header {
2261        my ($from_line, $to_line, $diffinfo, $from, $to, @parents) = @_;
2262        my $line;
2263        my $result = '';
2264
2265        $line = $from_line;
2266        #assert($line =~ m/^---/) if DEBUG;
2267        # no extra formatting for "^--- /dev/null"
2268        if (! $diffinfo->{'nparents'}) {
2269                # ordinary (single parent) diff
2270                if ($line =~ m!^--- "?a/!) {
2271                        if ($from->{'href'}) {
2272                                $line = '--- a/' .
2273                                        $cgi->a({-href=>$from->{'href'}, -class=>"path"},
2274                                                esc_path($from->{'file'}));
2275                        } else {
2276                                $line = '--- a/' .
2277                                        esc_path($from->{'file'});
2278                        }
2279                }
2280                $result .= qq!<div class="diff from_file">$line</div>\n!;
2281
2282        } else {
2283                # combined diff (merge commit)
2284                for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
2285                        if ($from->{'href'}[$i]) {
2286                                $line = '--- ' .
2287                                        $cgi->a({-href=>href(action=>"blobdiff",
2288                                                             hash_parent=>$diffinfo->{'from_id'}[$i],
2289                                                             hash_parent_base=>$parents[$i],
2290                                                             file_parent=>$from->{'file'}[$i],
2291                                                             hash=>$diffinfo->{'to_id'},
2292                                                             hash_base=>$hash,
2293                                                             file_name=>$to->{'file'}),
2294                                                 -class=>"path",
2295                                                 -title=>"diff" . ($i+1)},
2296                                                $i+1) .
2297                                        '/' .
2298                                        $cgi->a({-href=>$from->{'href'}[$i], -class=>"path"},
2299                                                esc_path($from->{'file'}[$i]));
2300                        } else {
2301                                $line = '--- /dev/null';
2302                        }
2303                        $result .= qq!<div class="diff from_file">$line</div>\n!;
2304                }
2305        }
2306
2307        $line = $to_line;
2308        #assert($line =~ m/^\+\+\+/) if DEBUG;
2309        # no extra formatting for "^+++ /dev/null"
2310        if ($line =~ m!^\+\+\+ "?b/!) {
2311                if ($to->{'href'}) {
2312                        $line = '+++ b/' .
2313                                $cgi->a({-href=>$to->{'href'}, -class=>"path"},
2314                                        esc_path($to->{'file'}));
2315                } else {
2316                        $line = '+++ b/' .
2317                                esc_path($to->{'file'});
2318                }
2319        }
2320        $result .= qq!<div class="diff to_file">$line</div>\n!;
2321
2322        return $result;
2323}
2324
2325# create note for patch simplified by combined diff
2326sub format_diff_cc_simplified {
2327        my ($diffinfo, @parents) = @_;
2328        my $result = '';
2329
2330        $result .= "<div class=\"diff header\">" .
2331                   "diff --cc ";
2332        if (!is_deleted($diffinfo)) {
2333                $result .= $cgi->a({-href => href(action=>"blob",
2334                                                  hash_base=>$hash,
2335                                                  hash=>$diffinfo->{'to_id'},
2336                                                  file_name=>$diffinfo->{'to_file'}),
2337                                    -class => "path"},
2338                                   esc_path($diffinfo->{'to_file'}));
2339        } else {
2340                $result .= esc_path($diffinfo->{'to_file'});
2341        }
2342        $result .= "</div>\n" . # class="diff header"
2343                   "<div class=\"diff nodifferences\">" .
2344                   "Simple merge" .
2345                   "</div>\n"; # class="diff nodifferences"
2346
2347        return $result;
2348}
2349
2350sub diff_line_class {
2351        my ($line, $from, $to) = @_;
2352
2353        # ordinary diff
2354        my $num_sign = 1;
2355        # combined diff
2356        if ($from && $to && ref($from->{'href'}) eq "ARRAY") {
2357                $num_sign = scalar @{$from->{'href'}};
2358        }
2359
2360        my @diff_line_classifier = (
2361                { regexp => qr/^\@\@{$num_sign} /, class => "chunk_header"},
2362                { regexp => qr/^\\/,               class => "incomplete"  },
2363                { regexp => qr/^ {$num_sign}/,     class => "ctx" },
2364                # classifier for context must come before classifier add/rem,
2365                # or we would have to use more complicated regexp, for example
2366                # qr/(?= {0,$m}\+)[+ ]{$num_sign}/, where $m = $num_sign - 1;
2367                { regexp => qr/^[+ ]{$num_sign}/,   class => "add" },
2368                { regexp => qr/^[- ]{$num_sign}/,   class => "rem" },
2369        );
2370        for my $clsfy (@diff_line_classifier) {
2371                return $clsfy->{'class'}
2372                        if ($line =~ $clsfy->{'regexp'});
2373        }
2374
2375        # fallback
2376        return "";
2377}
2378
2379# assumes that $from and $to are defined and correctly filled,
2380# and that $line holds a line of chunk header for unified diff
2381sub format_unidiff_chunk_header {
2382        my ($line, $from, $to) = @_;
2383
2384        my ($from_text, $from_start, $from_lines, $to_text, $to_start, $to_lines, $section) =
2385                $line =~ m/^\@{2} (-(\d+)(?:,(\d+))?) (\+(\d+)(?:,(\d+))?) \@{2}(.*)$/;
2386
2387        $from_lines = 0 unless defined $from_lines;
2388        $to_lines   = 0 unless defined $to_lines;
2389
2390        if ($from->{'href'}) {
2391                $from_text = $cgi->a({-href=>"$from->{'href'}#l$from_start",
2392                                     -class=>"list"}, $from_text);
2393        }
2394        if ($to->{'href'}) {
2395                $to_text   = $cgi->a({-href=>"$to->{'href'}#l$to_start",
2396                                     -class=>"list"}, $to_text);
2397        }
2398        $line = "<span class=\"chunk_info\">@@ $from_text $to_text @@</span>" .
2399                "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
2400        return $line;
2401}
2402
2403# assumes that $from and $to are defined and correctly filled,
2404# and that $line holds a line of chunk header for combined diff
2405sub format_cc_diff_chunk_header {
2406        my ($line, $from, $to) = @_;
2407
2408        my ($prefix, $ranges, $section) = $line =~ m/^(\@+) (.*?) \@+(.*)$/;
2409        my (@from_text, @from_start, @from_nlines, $to_text, $to_start, $to_nlines);
2410
2411        @from_text = split(' ', $ranges);
2412        for (my $i = 0; $i < @from_text; ++$i) {
2413                ($from_start[$i], $from_nlines[$i]) =
2414                        (split(',', substr($from_text[$i], 1)), 0);
2415        }
2416
2417        $to_text   = pop @from_text;
2418        $to_start  = pop @from_start;
2419        $to_nlines = pop @from_nlines;
2420
2421        $line = "<span class=\"chunk_info\">$prefix ";
2422        for (my $i = 0; $i < @from_text; ++$i) {
2423                if ($from->{'href'}[$i]) {
2424                        $line .= $cgi->a({-href=>"$from->{'href'}[$i]#l$from_start[$i]",
2425                                          -class=>"list"}, $from_text[$i]);
2426                } else {
2427                        $line .= $from_text[$i];
2428                }
2429                $line .= " ";
2430        }
2431        if ($to->{'href'}) {
2432                $line .= $cgi->a({-href=>"$to->{'href'}#l$to_start",
2433                                  -class=>"list"}, $to_text);
2434        } else {
2435                $line .= $to_text;
2436        }
2437        $line .= " $prefix</span>" .
2438                 "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
2439        return $line;
2440}
2441
2442# process patch (diff) line (not to be used for diff headers),
2443# returning HTML-formatted (but not wrapped) line.
2444# If the line is passed as a reference, it is treated as HTML and not
2445# esc_html()'ed.
2446sub format_diff_line {
2447        my ($line, $diff_class, $from, $to) = @_;
2448
2449        if (ref($line)) {
2450                $line = $$line;
2451        } else {
2452                chomp $line;
2453                $line = untabify($line);
2454
2455                if ($from && $to && $line =~ m/^\@{2} /) {
2456                        $line = format_unidiff_chunk_header($line, $from, $to);
2457                } elsif ($from && $to && $line =~ m/^\@{3}/) {
2458                        $line = format_cc_diff_chunk_header($line, $from, $to);
2459                } else {
2460                        $line = esc_html($line, -nbsp=>1);
2461                }
2462        }
2463
2464        my $diff_classes = "diff";
2465        $diff_classes .= " $diff_class" if ($diff_class);
2466        $line = "<div class=\"$diff_classes\">$line</div>\n";
2467
2468        return $line;
2469}
2470
2471# Generates undef or something like "_snapshot_" or "snapshot (_tbz2_ _zip_)",
2472# linked.  Pass the hash of the tree/commit to snapshot.
2473sub format_snapshot_links {
2474        my ($hash) = @_;
2475        my $num_fmts = @snapshot_fmts;
2476        if ($num_fmts > 1) {
2477                # A parenthesized list of links bearing format names.
2478                # e.g. "snapshot (_tar.gz_ _zip_)"
2479                return "snapshot (" . join(' ', map
2480                        $cgi->a({
2481                                -href => href(
2482                                        action=>"snapshot",
2483                                        hash=>$hash,
2484                                        snapshot_format=>$_
2485                                )
2486                        }, $known_snapshot_formats{$_}{'display'})
2487                , @snapshot_fmts) . ")";
2488        } elsif ($num_fmts == 1) {
2489                # A single "snapshot" link whose tooltip bears the format name.
2490                # i.e. "_snapshot_"
2491                my ($fmt) = @snapshot_fmts;
2492                return
2493                        $cgi->a({
2494                                -href => href(
2495                                        action=>"snapshot",
2496                                        hash=>$hash,
2497                                        snapshot_format=>$fmt
2498                                ),
2499                                -title => "in format: $known_snapshot_formats{$fmt}{'display'}"
2500                        }, "snapshot");
2501        } else { # $num_fmts == 0
2502                return undef;
2503        }
2504}
2505
2506## ......................................................................
2507## functions returning values to be passed, perhaps after some
2508## transformation, to other functions; e.g. returning arguments to href()
2509
2510# returns hash to be passed to href to generate gitweb URL
2511# in -title key it returns description of link
2512sub get_feed_info {
2513        my $format = shift || 'Atom';
2514        my %res = (action => lc($format));
2515
2516        # feed links are possible only for project views
2517        return unless (defined $project);
2518        # some views should link to OPML, or to generic project feed,
2519        # or don't have specific feed yet (so they should use generic)
2520        return if (!$action || $action =~ /^(?:tags|heads|forks|tag|search)$/x);
2521
2522        my $branch;
2523        # branches refs uses 'refs/heads/' prefix (fullname) to differentiate
2524        # from tag links; this also makes possible to detect branch links
2525        if ((defined $hash_base && $hash_base =~ m!^refs/heads/(.*)$!) ||
2526            (defined $hash      && $hash      =~ m!^refs/heads/(.*)$!)) {
2527                $branch = $1;
2528        }
2529        # find log type for feed description (title)
2530        my $type = 'log';
2531        if (defined $file_name) {
2532                $type  = "history of $file_name";
2533                $type .= "/" if ($action eq 'tree');
2534                $type .= " on '$branch'" if (defined $branch);
2535        } else {
2536                $type = "log of $branch" if (defined $branch);
2537        }
2538
2539        $res{-title} = $type;
2540        $res{'hash'} = (defined $branch ? "refs/heads/$branch" : undef);
2541        $res{'file_name'} = $file_name;
2542
2543        return %res;
2544}
2545
2546## ----------------------------------------------------------------------
2547## git utility subroutines, invoking git commands
2548
2549# returns path to the core git executable and the --git-dir parameter as list
2550sub git_cmd {
2551        $number_of_git_cmds++;
2552        return $GIT, '--git-dir='.$git_dir;
2553}
2554
2555# quote the given arguments for passing them to the shell
2556# quote_command("command", "arg 1", "arg with ' and ! characters")
2557# => "'command' 'arg 1' 'arg with '\'' and '\!' characters'"
2558# Try to avoid using this function wherever possible.
2559sub quote_command {
2560        return join(' ',
2561                map { my $a = $_; $a =~ s/(['!])/'\\$1'/g; "'$a'" } @_ );
2562}
2563
2564# get HEAD ref of given project as hash
2565sub git_get_head_hash {
2566        return git_get_full_hash(shift, 'HEAD');
2567}
2568
2569sub git_get_full_hash {
2570        return git_get_hash(@_);
2571}
2572
2573sub git_get_short_hash {
2574        return git_get_hash(@_, '--short=7');
2575}
2576
2577sub git_get_hash {
2578        my ($project, $hash, @options) = @_;
2579        my $o_git_dir = $git_dir;
2580        my $retval = undef;
2581        $git_dir = "$projectroot/$project";
2582        if (open my $fd, '-|', git_cmd(), 'rev-parse',
2583            '--verify', '-q', @options, $hash) {
2584                $retval = <$fd>;
2585                chomp $retval if defined $retval;
2586                close $fd;
2587        }
2588        if (defined $o_git_dir) {
2589                $git_dir = $o_git_dir;
2590        }
2591        return $retval;
2592}
2593
2594# get type of given object
2595sub git_get_type {
2596        my $hash = shift;
2597
2598        open my $fd, "-|", git_cmd(), "cat-file", '-t', $hash or return;
2599        my $type = <$fd>;
2600        close $fd or return;
2601        chomp $type;
2602        return $type;
2603}
2604
2605# repository configuration
2606our $config_file = '';
2607our %config;
2608
2609# store multiple values for single key as anonymous array reference
2610# single values stored directly in the hash, not as [ <value> ]
2611sub hash_set_multi {
2612        my ($hash, $key, $value) = @_;
2613
2614        if (!exists $hash->{$key}) {
2615                $hash->{$key} = $value;
2616        } elsif (!ref $hash->{$key}) {
2617                $hash->{$key} = [ $hash->{$key}, $value ];
2618        } else {
2619                push @{$hash->{$key}}, $value;
2620        }
2621}
2622
2623# return hash of git project configuration
2624# optionally limited to some section, e.g. 'gitweb'
2625sub git_parse_project_config {
2626        my $section_regexp = shift;
2627        my %config;
2628
2629        local $/ = "\0";
2630
2631        open my $fh, "-|", git_cmd(), "config", '-z', '-l',
2632                or return;
2633
2634        while (my $keyval = <$fh>) {
2635                chomp $keyval;
2636                my ($key, $value) = split(/\n/, $keyval, 2);
2637
2638                hash_set_multi(\%config, $key, $value)
2639                        if (!defined $section_regexp || $key =~ /^(?:$section_regexp)\./o);
2640        }
2641        close $fh;
2642
2643        return %config;
2644}
2645
2646# convert config value to boolean: 'true' or 'false'
2647# no value, number > 0, 'true' and 'yes' values are true
2648# rest of values are treated as false (never as error)
2649sub config_to_bool {
2650        my $val = shift;
2651
2652        return 1 if !defined $val;             # section.key
2653
2654        # strip leading and trailing whitespace
2655        $val =~ s/^\s+//;
2656        $val =~ s/\s+$//;
2657
2658        return (($val =~ /^\d+$/ && $val) ||   # section.key = 1
2659                ($val =~ /^(?:true|yes)$/i));  # section.key = true
2660}
2661
2662# convert config value to simple decimal number
2663# an optional value suffix of 'k', 'm', or 'g' will cause the value
2664# to be multiplied by 1024, 1048576, or 1073741824
2665sub config_to_int {
2666        my $val = shift;
2667
2668        # strip leading and trailing whitespace
2669        $val =~ s/^\s+//;
2670        $val =~ s/\s+$//;
2671
2672        if (my ($num, $unit) = ($val =~ /^([0-9]*)([kmg])$/i)) {
2673                $unit = lc($unit);
2674                # unknown unit is treated as 1
2675                return $num * ($unit eq 'g' ? 1073741824 :
2676                               $unit eq 'm' ?    1048576 :
2677                               $unit eq 'k' ?       1024 : 1);
2678        }
2679        return $val;
2680}
2681
2682# convert config value to array reference, if needed
2683sub config_to_multi {
2684        my $val = shift;
2685
2686        return ref($val) ? $val : (defined($val) ? [ $val ] : []);
2687}
2688
2689sub git_get_project_config {
2690        my ($key, $type) = @_;
2691
2692        return unless defined $git_dir;
2693
2694        # key sanity check
2695        return unless ($key);
2696        # only subsection, if exists, is case sensitive,
2697        # and not lowercased by 'git config -z -l'
2698        if (my ($hi, $mi, $lo) = ($key =~ /^([^.]*)\.(.*)\.([^.]*)$/)) {
2699                $key = join(".", lc($hi), $mi, lc($lo));
2700        } else {
2701                $key = lc($key);
2702        }
2703        $key =~ s/^gitweb\.//;
2704        return if ($key =~ m/\W/);
2705
2706        # type sanity check
2707        if (defined $type) {
2708                $type =~ s/^--//;
2709                $type = undef
2710                        unless ($type eq 'bool' || $type eq 'int');
2711        }
2712
2713        # get config
2714        if (!defined $config_file ||
2715            $config_file ne "$git_dir/config") {
2716                %config = git_parse_project_config('gitweb');
2717                $config_file = "$git_dir/config";
2718        }
2719
2720        # check if config variable (key) exists
2721        return unless exists $config{"gitweb.$key"};
2722
2723        # ensure given type
2724        if (!defined $type) {
2725                return $config{"gitweb.$key"};
2726        } elsif ($type eq 'bool') {
2727                # backward compatibility: 'git config --bool' returns true/false
2728                return config_to_bool($config{"gitweb.$key"}) ? 'true' : 'false';
2729        } elsif ($type eq 'int') {
2730                return config_to_int($config{"gitweb.$key"});
2731        }
2732        return $config{"gitweb.$key"};
2733}
2734
2735# get hash of given path at given ref
2736sub git_get_hash_by_path {
2737        my $base = shift;
2738        my $path = shift || return undef;
2739        my $type = shift;
2740
2741        $path =~ s,/+$,,;
2742
2743        open my $fd, "-|", git_cmd(), "ls-tree", $base, "--", $path
2744                or die_error(500, "Open git-ls-tree failed");
2745        my $line = <$fd>;
2746        close $fd or return undef;
2747
2748        if (!defined $line) {
2749                # there is no tree or hash given by $path at $base
2750                return undef;
2751        }
2752
2753        #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
2754        $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/;
2755        if (defined $type && $type ne $2) {
2756                # type doesn't match
2757                return undef;
2758        }
2759        return $3;
2760}
2761
2762# get path of entry with given hash at given tree-ish (ref)
2763# used to get 'from' filename for combined diff (merge commit) for renames
2764sub git_get_path_by_hash {
2765        my $base = shift || return;
2766        my $hash = shift || return;
2767
2768        local $/ = "\0";
2769
2770        open my $fd, "-|", git_cmd(), "ls-tree", '-r', '-t', '-z', $base
2771                or return undef;
2772        while (my $line = <$fd>) {
2773                chomp $line;
2774
2775                #'040000 tree 595596a6a9117ddba9fe379b6b012b558bac8423  gitweb'
2776                #'100644 blob e02e90f0429be0d2a69b76571101f20b8f75530f  gitweb/README'
2777                if ($line =~ m/(?:[0-9]+) (?:.+) $hash\t(.+)$/) {
2778                        close $fd;
2779                        return $1;
2780                }
2781        }
2782        close $fd;
2783        return undef;
2784}
2785
2786## ......................................................................
2787## git utility functions, directly accessing git repository
2788
2789# get the value of config variable either from file named as the variable
2790# itself in the repository ($GIT_DIR/$name file), or from gitweb.$name
2791# configuration variable in the repository config file.
2792sub git_get_file_or_project_config {
2793        my ($path, $name) = @_;
2794
2795        $git_dir = "$projectroot/$path";
2796        open my $fd, '<', "$git_dir/$name"
2797                or return git_get_project_config($name);
2798        my $conf = <$fd>;
2799        close $fd;
2800        if (defined $conf) {
2801                chomp $conf;
2802        }
2803        return $conf;
2804}
2805
2806sub git_get_project_description {
2807        my $path = shift;
2808        return git_get_file_or_project_config($path, 'description');
2809}
2810
2811sub git_get_project_category {
2812        my $path = shift;
2813        return git_get_file_or_project_config($path, 'category');
2814}
2815
2816
2817# supported formats:
2818# * $GIT_DIR/ctags/<tagname> file (in 'ctags' subdirectory)
2819#   - if its contents is a number, use it as tag weight,
2820#   - otherwise add a tag with weight 1
2821# * $GIT_DIR/ctags file, each line is a tag (with weight 1)
2822#   the same value multiple times increases tag weight
2823# * `gitweb.ctag' multi-valued repo config variable
2824sub git_get_project_ctags {
2825        my $project = shift;
2826        my $ctags = {};
2827
2828        $git_dir = "$projectroot/$project";
2829        if (opendir my $dh, "$git_dir/ctags") {
2830                my @files = grep { -f $_ } map { "$git_dir/ctags/$_" } readdir($dh);
2831                foreach my $tagfile (@files) {
2832                        open my $ct, '<', $tagfile
2833                                or next;
2834                        my $val = <$ct>;
2835                        chomp $val if $val;
2836                        close $ct;
2837
2838                        (my $ctag = $tagfile) =~ s#.*/##;
2839                        if ($val =~ /^\d+$/) {
2840                                $ctags->{$ctag} = $val;
2841                        } else {
2842                                $ctags->{$ctag} = 1;
2843                        }
2844                }
2845                closedir $dh;
2846
2847        } elsif (open my $fh, '<', "$git_dir/ctags") {
2848                while (my $line = <$fh>) {
2849                        chomp $line;
2850                        $ctags->{$line}++ if $line;
2851                }
2852                close $fh;
2853
2854        } else {
2855                my $taglist = config_to_multi(git_get_project_config('ctag'));
2856                foreach my $tag (@$taglist) {
2857                        $ctags->{$tag}++;
2858                }
2859        }
2860
2861        return $ctags;
2862}
2863
2864# return hash, where keys are content tags ('ctags'),
2865# and values are sum of weights of given tag in every project
2866sub git_gather_all_ctags {
2867        my $projects = shift;
2868        my $ctags = {};
2869
2870        foreach my $p (@$projects) {
2871                foreach my $ct (keys %{$p->{'ctags'}}) {
2872                        $ctags->{$ct} += $p->{'ctags'}->{$ct};
2873                }
2874        }
2875
2876        return $ctags;
2877}
2878
2879sub git_populate_project_tagcloud {
2880        my $ctags = shift;
2881
2882        # First, merge different-cased tags; tags vote on casing
2883        my %ctags_lc;
2884        foreach (keys %$ctags) {
2885                $ctags_lc{lc $_}->{count} += $ctags->{$_};
2886                if (not $ctags_lc{lc $_}->{topcount}
2887                    or $ctags_lc{lc $_}->{topcount} < $ctags->{$_}) {
2888                        $ctags_lc{lc $_}->{topcount} = $ctags->{$_};
2889                        $ctags_lc{lc $_}->{topname} = $_;
2890                }
2891        }
2892
2893        my $cloud;
2894        my $matched = $input_params{'ctag'};
2895        if (eval { require HTML::TagCloud; 1; }) {
2896                $cloud = HTML::TagCloud->new;
2897                foreach my $ctag (sort keys %ctags_lc) {
2898                        # Pad the title with spaces so that the cloud looks
2899                        # less crammed.
2900                        my $title = esc_html($ctags_lc{$ctag}->{topname});
2901                        $title =~ s/ /&nbsp;/g;
2902                        $title =~ s/^/&nbsp;/g;
2903                        $title =~ s/$/&nbsp;/g;
2904                        if (defined $matched && $matched eq $ctag) {
2905                                $title = qq(<span class="match">$title</span>);
2906                        }
2907                        $cloud->add($title, href(project=>undef, ctag=>$ctag),
2908                                    $ctags_lc{$ctag}->{count});
2909                }
2910        } else {
2911                $cloud = {};
2912                foreach my $ctag (keys %ctags_lc) {
2913                        my $title = esc_html($ctags_lc{$ctag}->{topname}, -nbsp=>1);
2914                        if (defined $matched && $matched eq $ctag) {
2915                                $title = qq(<span class="match">$title</span>);
2916                        }
2917                        $cloud->{$ctag}{count} = $ctags_lc{$ctag}->{count};
2918                        $cloud->{$ctag}{ctag} =
2919                                $cgi->a({-href=>href(project=>undef, ctag=>$ctag)}, $title);
2920                }
2921        }
2922        return $cloud;
2923}
2924
2925sub git_show_project_tagcloud {
2926        my ($cloud, $count) = @_;
2927        if (ref $cloud eq 'HTML::TagCloud') {
2928                return $cloud->html_and_css($count);
2929        } else {
2930                my @tags = sort { $cloud->{$a}->{'count'} <=> $cloud->{$b}->{'count'} } keys %$cloud;
2931                return
2932                        '<div id="htmltagcloud"'.($project ? '' : ' align="center"').'>' .
2933                        join (', ', map {
2934                                $cloud->{$_}->{'ctag'}
2935                        } splice(@tags, 0, $count)) .
2936                        '</div>';
2937        }
2938}
2939
2940sub git_get_project_url_list {
2941        my $path = shift;
2942
2943        $git_dir = "$projectroot/$path";
2944        open my $fd, '<', "$git_dir/cloneurl"
2945                or return wantarray ?
2946                @{ config_to_multi(git_get_project_config('url')) } :
2947                   config_to_multi(git_get_project_config('url'));
2948        my @git_project_url_list = map { chomp; $_ } <$fd>;
2949        close $fd;
2950
2951        return wantarray ? @git_project_url_list : \@git_project_url_list;
2952}
2953
2954sub git_get_projects_list {
2955        my $filter = shift || '';
2956        my $paranoid = shift;
2957        my @list;
2958
2959        if (-d $projects_list) {
2960                # search in directory
2961                my $dir = $projects_list;
2962                # remove the trailing "/"
2963                $dir =~ s!/+$!!;
2964                my $pfxlen = length("$dir");
2965                my $pfxdepth = ($dir =~ tr!/!!);
2966                # when filtering, search only given subdirectory
2967                if ($filter && !$paranoid) {
2968                        $dir .= "/$filter";
2969                        $dir =~ s!/+$!!;
2970                }
2971
2972                File::Find::find({
2973                        follow_fast => 1, # follow symbolic links
2974                        follow_skip => 2, # ignore duplicates
2975                        dangling_symlinks => 0, # ignore dangling symlinks, silently
2976                        wanted => sub {
2977                                # global variables
2978                                our $project_maxdepth;
2979                                our $projectroot;
2980                                # skip project-list toplevel, if we get it.
2981                                return if (m!^[/.]$!);
2982                                # only directories can be git repositories
2983                                return unless (-d $_);
2984                                # don't traverse too deep (Find is super slow on os x)
2985                                # $project_maxdepth excludes depth of $projectroot
2986                                if (($File::Find::name =~ tr!/!!) - $pfxdepth > $project_maxdepth) {
2987                                        $File::Find::prune = 1;
2988                                        return;
2989                                }
2990
2991                                my $path = substr($File::Find::name, $pfxlen + 1);
2992                                # paranoidly only filter here
2993                                if ($paranoid && $filter && $path !~ m!^\Q$filter\E/!) {
2994                                        next;
2995                                }
2996                                # we check related file in $projectroot
2997                                if (check_export_ok("$projectroot/$path")) {
2998                                        push @list, { path => $path };
2999                                        $File::Find::prune = 1;
3000                                }
3001                        },
3002                }, "$dir");
3003
3004        } elsif (-f $projects_list) {
3005                # read from file(url-encoded):
3006                # 'git%2Fgit.git Linus+Torvalds'
3007                # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
3008                # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
3009                open my $fd, '<', $projects_list or return;
3010        PROJECT:
3011                while (my $line = <$fd>) {
3012                        chomp $line;
3013                        my ($path, $owner) = split ' ', $line;
3014                        $path = unescape($path);
3015                        $owner = unescape($owner);
3016                        if (!defined $path) {
3017                                next;
3018                        }
3019                        # if $filter is rpovided, check if $path begins with $filter
3020                        if ($filter && $path !~ m!^\Q$filter\E/!) {
3021                                next;
3022                        }
3023                        if (check_export_ok("$projectroot/$path")) {
3024                                my $pr = {
3025                                        path => $path
3026                                };
3027                                if ($owner) {
3028                                        $pr->{'owner'} = to_utf8($owner);
3029                                }
3030                                push @list, $pr;
3031                        }
3032                }
3033                close $fd;
3034        }
3035        return @list;
3036}
3037
3038# written with help of Tree::Trie module (Perl Artistic License, GPL compatibile)
3039# as side effects it sets 'forks' field to list of forks for forked projects
3040sub filter_forks_from_projects_list {
3041        my $projects = shift;
3042
3043        my %trie; # prefix tree of directories (path components)
3044        # generate trie out of those directories that might contain forks
3045        foreach my $pr (@$projects) {
3046                my $path = $pr->{'path'};
3047                $path =~ s/\.git$//;      # forks of 'repo.git' are in 'repo/' directory
3048                next if ($path =~ m!/$!); # skip non-bare repositories, e.g. 'repo/.git'
3049                next unless ($path);      # skip '.git' repository: tests, git-instaweb
3050                next unless (-d "$projectroot/$path"); # containing directory exists
3051                $pr->{'forks'} = [];      # there can be 0 or more forks of project
3052
3053                # add to trie
3054                my @dirs = split('/', $path);
3055                # walk the trie, until either runs out of components or out of trie
3056                my $ref = \%trie;
3057                while (scalar @dirs &&
3058                       exists($ref->{$dirs[0]})) {
3059                        $ref = $ref->{shift @dirs};
3060                }
3061                # create rest of trie structure from rest of components
3062                foreach my $dir (@dirs) {
3063                        $ref = $ref->{$dir} = {};
3064                }
3065                # create end marker, store $pr as a data
3066                $ref->{''} = $pr if (!exists $ref->{''});
3067        }
3068
3069        # filter out forks, by finding shortest prefix match for paths
3070        my @filtered;
3071 PROJECT:
3072        foreach my $pr (@$projects) {
3073                # trie lookup
3074                my $ref = \%trie;
3075        DIR:
3076                foreach my $dir (split('/', $pr->{'path'})) {
3077                        if (exists $ref->{''}) {
3078                                # found [shortest] prefix, is a fork - skip it
3079                                push @{$ref->{''}{'forks'}}, $pr;
3080                                next PROJECT;
3081                        }
3082                        if (!exists $ref->{$dir}) {
3083                                # not in trie, cannot have prefix, not a fork
3084                                push @filtered, $pr;
3085                                next PROJECT;
3086                        }
3087                        # If the dir is there, we just walk one step down the trie.
3088                        $ref = $ref->{$dir};
3089                }
3090                # we ran out of trie
3091                # (shouldn't happen: it's either no match, or end marker)
3092                push @filtered, $pr;
3093        }
3094
3095        return @filtered;
3096}
3097
3098# note: fill_project_list_info must be run first,
3099# for 'descr_long' and 'ctags' to be filled
3100sub search_projects_list {
3101        my ($projlist, %opts) = @_;
3102        my $tagfilter  = $opts{'tagfilter'};
3103        my $search_re = $opts{'search_regexp'};
3104
3105        return @$projlist
3106                unless ($tagfilter || $search_re);
3107
3108        # searching projects require filling to be run before it;
3109        fill_project_list_info($projlist,
3110                               $tagfilter  ? 'ctags' : (),
3111                               $search_re ? ('path', 'descr') : ());
3112        my @projects;
3113 PROJECT:
3114        foreach my $pr (@$projlist) {
3115
3116                if ($tagfilter) {
3117                        next unless ref($pr->{'ctags'}) eq 'HASH';
3118                        next unless
3119                                grep { lc($_) eq lc($tagfilter) } keys %{$pr->{'ctags'}};
3120                }
3121
3122                if ($search_re) {
3123                        next unless
3124                                $pr->{'path'} =~ /$search_re/ ||
3125                                $pr->{'descr_long'} =~ /$search_re/;
3126                }
3127
3128                push @projects, $pr;
3129        }
3130
3131        return @projects;
3132}
3133
3134our $gitweb_project_owner = undef;
3135sub git_get_project_list_from_file {
3136
3137        return if (defined $gitweb_project_owner);
3138
3139        $gitweb_project_owner = {};
3140        # read from file (url-encoded):
3141        # 'git%2Fgit.git Linus+Torvalds'
3142        # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
3143        # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
3144        if (-f $projects_list) {
3145                open(my $fd, '<', $projects_list);
3146                while (my $line = <$fd>) {
3147                        chomp $line;
3148                        my ($pr, $ow) = split ' ', $line;
3149                        $pr = unescape($pr);
3150                        $ow = unescape($ow);
3151                        $gitweb_project_owner->{$pr} = to_utf8($ow);
3152                }
3153                close $fd;
3154        }
3155}
3156
3157sub git_get_project_owner {
3158        my $project = shift;
3159        my $owner;
3160
3161        return undef unless $project;
3162        $git_dir = "$projectroot/$project";
3163
3164        if (!defined $gitweb_project_owner) {
3165                git_get_project_list_from_file();
3166        }
3167
3168        if (exists $gitweb_project_owner->{$project}) {
3169                $owner = $gitweb_project_owner->{$project};
3170        }
3171        if (!defined $owner){
3172                $owner = git_get_project_config('owner');
3173        }
3174        if (!defined $owner) {
3175                $owner = get_file_owner("$git_dir");
3176        }
3177
3178        return $owner;
3179}
3180
3181sub git_get_last_activity {
3182        my ($path) = @_;
3183        my $fd;
3184
3185        $git_dir = "$projectroot/$path";
3186        open($fd, "-|", git_cmd(), 'for-each-ref',
3187             '--format=%(committer)',
3188             '--sort=-committerdate',
3189             '--count=1',
3190             'refs/heads') or return;
3191        my $most_recent = <$fd>;
3192        close $fd or return;
3193        if (defined $most_recent &&
3194            $most_recent =~ / (\d+) [-+][01]\d\d\d$/) {
3195                my $timestamp = $1;
3196                my $age = time - $timestamp;
3197                return ($age, age_string($age));
3198        }
3199        return (undef, undef);
3200}
3201
3202# Implementation note: when a single remote is wanted, we cannot use 'git
3203# remote show -n' because that command always work (assuming it's a remote URL
3204# if it's not defined), and we cannot use 'git remote show' because that would
3205# try to make a network roundtrip. So the only way to find if that particular
3206# remote is defined is to walk the list provided by 'git remote -v' and stop if
3207# and when we find what we want.
3208sub git_get_remotes_list {
3209        my $wanted = shift;
3210        my %remotes = ();
3211
3212        open my $fd, '-|' , git_cmd(), 'remote', '-v';
3213        return unless $fd;
3214        while (my $remote = <$fd>) {
3215                chomp $remote;
3216                $remote =~ s!\t(.*?)\s+\((\w+)\)$!!;
3217                next if $wanted and not $remote eq $wanted;
3218                my ($url, $key) = ($1, $2);
3219
3220                $remotes{$remote} ||= { 'heads' => () };
3221                $remotes{$remote}{$key} = $url;
3222        }
3223        close $fd or return;
3224        return wantarray ? %remotes : \%remotes;
3225}
3226
3227# Takes a hash of remotes as first parameter and fills it by adding the
3228# available remote heads for each of the indicated remotes.
3229sub fill_remote_heads {
3230        my $remotes = shift;
3231        my @heads = map { "remotes/$_" } keys %$remotes;
3232        my @remoteheads = git_get_heads_list(undef, @heads);
3233        foreach my $remote (keys %$remotes) {
3234                $remotes->{$remote}{'heads'} = [ grep {
3235                        $_->{'name'} =~ s!^$remote/!!
3236                        } @remoteheads ];
3237        }
3238}
3239
3240sub git_get_references {
3241        my $type = shift || "";
3242        my %refs;
3243        # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c refs/tags/v2.6.11
3244        # c39ae07f393806ccf406ef966e9a15afc43cc36a refs/tags/v2.6.11^{}
3245        open my $fd, "-|", git_cmd(), "show-ref", "--dereference",
3246                ($type ? ("--", "refs/$type") : ()) # use -- <pattern> if $type
3247                or return;
3248
3249        while (my $line = <$fd>) {
3250                chomp $line;
3251                if ($line =~ m!^([0-9a-fA-F]{40})\srefs/($type.*)$!) {
3252                        if (defined $refs{$1}) {
3253                                push @{$refs{$1}}, $2;
3254                        } else {
3255                                $refs{$1} = [ $2 ];
3256                        }
3257                }
3258        }
3259        close $fd or return;
3260        return \%refs;
3261}
3262
3263sub git_get_rev_name_tags {
3264        my $hash = shift || return undef;
3265
3266        open my $fd, "-|", git_cmd(), "name-rev", "--tags", $hash
3267                or return;
3268        my $name_rev = <$fd>;
3269        close $fd;
3270
3271        if ($name_rev =~ m|^$hash tags/(.*)$|) {
3272                return $1;
3273        } else {
3274                # catches also '$hash undefined' output
3275                return undef;
3276        }
3277}
3278
3279## ----------------------------------------------------------------------
3280## parse to hash functions
3281
3282sub parse_date {
3283        my $epoch = shift;
3284        my $tz = shift || "-0000";
3285
3286        my %date;
3287        my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
3288        my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
3289        my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
3290        $date{'hour'} = $hour;
3291        $date{'minute'} = $min;
3292        $date{'mday'} = $mday;
3293        $date{'day'} = $days[$wday];
3294        $date{'month'} = $months[$mon];
3295        $date{'rfc2822'}   = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000",
3296                             $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
3297        $date{'mday-time'} = sprintf "%d %s %02d:%02d",
3298                             $mday, $months[$mon], $hour ,$min;
3299        $date{'iso-8601'}  = sprintf "%04d-%02d-%02dT%02d:%02d:%02dZ",
3300                             1900+$year, 1+$mon, $mday, $hour ,$min, $sec;
3301
3302        my ($tz_sign, $tz_hour, $tz_min) =
3303                ($tz =~ m/^([-+])(\d\d)(\d\d)$/);
3304        $tz_sign = ($tz_sign eq '-' ? -1 : +1);
3305        my $local = $epoch + $tz_sign*((($tz_hour*60) + $tz_min)*60);
3306        ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
3307        $date{'hour_local'} = $hour;
3308        $date{'minute_local'} = $min;
3309        $date{'tz_local'} = $tz;
3310        $date{'iso-tz'} = sprintf("%04d-%02d-%02d %02d:%02d:%02d %s",
3311                                  1900+$year, $mon+1, $mday,
3312                                  $hour, $min, $sec, $tz);
3313        return %date;
3314}
3315
3316sub parse_tag {
3317        my $tag_id = shift;
3318        my %tag;
3319        my @comment;
3320
3321        open my $fd, "-|", git_cmd(), "cat-file", "tag", $tag_id or return;
3322        $tag{'id'} = $tag_id;
3323        while (my $line = <$fd>) {
3324                chomp $line;
3325                if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
3326                        $tag{'object'} = $1;
3327                } elsif ($line =~ m/^type (.+)$/) {
3328                        $tag{'type'} = $1;
3329                } elsif ($line =~ m/^tag (.+)$/) {
3330                        $tag{'name'} = $1;
3331                } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
3332                        $tag{'author'} = $1;
3333                        $tag{'author_epoch'} = $2;
3334                        $tag{'author_tz'} = $3;
3335                        if ($tag{'author'} =~ m/^([^<]+) <([^>]*)>/) {
3336                                $tag{'author_name'}  = $1;
3337                                $tag{'author_email'} = $2;
3338                        } else {
3339                                $tag{'author_name'} = $tag{'author'};
3340                        }
3341                } elsif ($line =~ m/--BEGIN/) {
3342                        push @comment, $line;
3343                        last;
3344                } elsif ($line eq "") {
3345                        last;
3346                }
3347        }
3348        push @comment, <$fd>;
3349        $tag{'comment'} = \@comment;
3350        close $fd or return;
3351        if (!defined $tag{'name'}) {
3352                return
3353        };
3354        return %tag
3355}
3356
3357sub parse_commit_text {
3358        my ($commit_text, $withparents) = @_;
3359        my @commit_lines = split '\n', $commit_text;
3360        my %co;
3361
3362        pop @commit_lines; # Remove '\0'
3363
3364        if (! @commit_lines) {
3365                return;
3366        }
3367
3368        my $header = shift @commit_lines;
3369        if ($header !~ m/^[0-9a-fA-F]{40}/) {
3370                return;
3371        }
3372        ($co{'id'}, my @parents) = split ' ', $header;
3373        while (my $line = shift @commit_lines) {
3374                last if $line eq "\n";
3375                if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
3376                        $co{'tree'} = $1;
3377                } elsif ((!defined $withparents) && ($line =~ m/^parent ([0-9a-fA-F]{40})$/)) {
3378                        push @parents, $1;
3379                } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
3380                        $co{'author'} = to_utf8($1);
3381                        $co{'author_epoch'} = $2;
3382                        $co{'author_tz'} = $3;
3383                        if ($co{'author'} =~ m/^([^<]+) <([^>]*)>/) {
3384                                $co{'author_name'}  = $1;
3385                                $co{'author_email'} = $2;
3386                        } else {
3387                                $co{'author_name'} = $co{'author'};
3388                        }
3389                } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
3390                        $co{'committer'} = to_utf8($1);
3391                        $co{'committer_epoch'} = $2;
3392                        $co{'committer_tz'} = $3;
3393                        if ($co{'committer'} =~ m/^([^<]+) <([^>]*)>/) {
3394                                $co{'committer_name'}  = $1;
3395                                $co{'committer_email'} = $2;
3396                        } else {
3397                                $co{'committer_name'} = $co{'committer'};
3398                        }
3399                }
3400        }
3401        if (!defined $co{'tree'}) {
3402                return;
3403        };
3404        $co{'parents'} = \@parents;
3405        $co{'parent'} = $parents[0];
3406
3407        foreach my $title (@commit_lines) {
3408                $title =~ s/^    //;
3409                if ($title ne "") {
3410                        $co{'title'} = chop_str($title, 80, 5);
3411                        # remove leading stuff of merges to make the interesting part visible
3412                        if (length($title) > 50) {
3413                                $title =~ s/^Automatic //;
3414                                $title =~ s/^merge (of|with) /Merge ... /i;
3415                                if (length($title) > 50) {
3416                                        $title =~ s/(http|rsync):\/\///;
3417                                }
3418                                if (length($title) > 50) {
3419                                        $title =~ s/(master|www|rsync)\.//;
3420                                }
3421                                if (length($title) > 50) {
3422                                        $title =~ s/kernel.org:?//;
3423                                }
3424                                if (length($title) > 50) {
3425                                        $title =~ s/\/pub\/scm//;
3426                                }
3427                        }
3428                        $co{'title_short'} = chop_str($title, 50, 5);
3429                        last;
3430                }
3431        }
3432        if (! defined $co{'title'} || $co{'title'} eq "") {
3433                $co{'title'} = $co{'title_short'} = '(no commit message)';
3434        }
3435        # remove added spaces
3436        foreach my $line (@commit_lines) {
3437                $line =~ s/^    //;
3438        }
3439        $co{'comment'} = \@commit_lines;
3440
3441        my $age = time - $co{'committer_epoch'};
3442        $co{'age'} = $age;
3443        $co{'age_string'} = age_string($age);
3444        my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
3445        if ($age > 60*60*24*7*2) {
3446                $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
3447                $co{'age_string_age'} = $co{'age_string'};
3448        } else {
3449                $co{'age_string_date'} = $co{'age_string'};
3450                $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
3451        }
3452        return %co;
3453}
3454
3455sub parse_commit {
3456        my ($commit_id) = @_;
3457        my %co;
3458
3459        local $/ = "\0";
3460
3461        open my $fd, "-|", git_cmd(), "rev-list",
3462                "--parents",
3463                "--header",
3464                "--max-count=1",
3465                $commit_id,
3466                "--",
3467                or die_error(500, "Open git-rev-list failed");
3468        %co = parse_commit_text(<$fd>, 1);
3469        close $fd;
3470
3471        return %co;
3472}
3473
3474sub parse_commits {
3475        my ($commit_id, $maxcount, $skip, $filename, @args) = @_;
3476        my @cos;
3477
3478        $maxcount ||= 1;
3479        $skip ||= 0;
3480
3481        local $/ = "\0";
3482
3483        open my $fd, "-|", git_cmd(), "rev-list",
3484                "--header",
3485                @args,
3486                ("--max-count=" . $maxcount),
3487                ("--skip=" . $skip),
3488                @extra_options,
3489                $commit_id,
3490                "--",
3491                ($filename ? ($filename) : ())
3492                or die_error(500, "Open git-rev-list failed");
3493        while (my $line = <$fd>) {
3494                my %co = parse_commit_text($line);
3495                push @cos, \%co;
3496        }
3497        close $fd;
3498
3499        return wantarray ? @cos : \@cos;
3500}
3501
3502# parse line of git-diff-tree "raw" output
3503sub parse_difftree_raw_line {
3504        my $line = shift;
3505        my %res;
3506
3507        # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M   ls-files.c'
3508        # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M   rev-tree.c'
3509        if ($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/) {
3510                $res{'from_mode'} = $1;
3511                $res{'to_mode'} = $2;
3512                $res{'from_id'} = $3;
3513                $res{'to_id'} = $4;
3514                $res{'status'} = $5;
3515                $res{'similarity'} = $6;
3516                if ($res{'status'} eq 'R' || $res{'status'} eq 'C') { # renamed or copied
3517                        ($res{'from_file'}, $res{'to_file'}) = map { unquote($_) } split("\t", $7);
3518                } else {
3519                        $res{'from_file'} = $res{'to_file'} = $res{'file'} = unquote($7);
3520                }
3521        }
3522        # '::100755 100755 100755 60e79ca1b01bc8b057abe17ddab484699a7f5fdb 94067cc5f73388f33722d52ae02f44692bc07490 94067cc5f73388f33722d52ae02f44692bc07490 MR git-gui/git-gui.sh'
3523        # combined diff (for merge commit)
3524        elsif ($line =~ s/^(::+)((?:[0-7]{6} )+)((?:[0-9a-fA-F]{40} )+)([a-zA-Z]+)\t(.*)$//) {
3525                $res{'nparents'}  = length($1);
3526                $res{'from_mode'} = [ split(' ', $2) ];
3527                $res{'to_mode'} = pop @{$res{'from_mode'}};
3528                $res{'from_id'} = [ split(' ', $3) ];
3529                $res{'to_id'} = pop @{$res{'from_id'}};
3530                $res{'status'} = [ split('', $4) ];
3531                $res{'to_file'} = unquote($5);
3532        }
3533        # 'c512b523472485aef4fff9e57b229d9d243c967f'
3534        elsif ($line =~ m/^([0-9a-fA-F]{40})$/) {
3535                $res{'commit'} = $1;
3536        }
3537
3538        return wantarray ? %res : \%res;
3539}
3540
3541# wrapper: return parsed line of git-diff-tree "raw" output
3542# (the argument might be raw line, or parsed info)
3543sub parsed_difftree_line {
3544        my $line_or_ref = shift;
3545
3546        if (ref($line_or_ref) eq "HASH") {
3547                # pre-parsed (or generated by hand)
3548                return $line_or_ref;
3549        } else {
3550                return parse_difftree_raw_line($line_or_ref);
3551        }
3552}
3553
3554# parse line of git-ls-tree output
3555sub parse_ls_tree_line {
3556        my $line = shift;
3557        my %opts = @_;
3558        my %res;
3559
3560        if ($opts{'-l'}) {
3561                #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa   16717  panic.c'
3562                $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40}) +(-|[0-9]+)\t(.+)$/s;
3563
3564                $res{'mode'} = $1;
3565                $res{'type'} = $2;
3566                $res{'hash'} = $3;
3567                $res{'size'} = $4;
3568                if ($opts{'-z'}) {
3569                        $res{'name'} = $5;
3570                } else {
3571                        $res{'name'} = unquote($5);
3572                }
3573        } else {
3574                #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
3575                $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/s;
3576
3577                $res{'mode'} = $1;
3578                $res{'type'} = $2;
3579                $res{'hash'} = $3;
3580                if ($opts{'-z'}) {
3581                        $res{'name'} = $4;
3582                } else {
3583                        $res{'name'} = unquote($4);
3584                }
3585        }
3586
3587        return wantarray ? %res : \%res;
3588}
3589
3590# generates _two_ hashes, references to which are passed as 2 and 3 argument
3591sub parse_from_to_diffinfo {
3592        my ($diffinfo, $from, $to, @parents) = @_;
3593
3594        if ($diffinfo->{'nparents'}) {
3595                # combined diff
3596                $from->{'file'} = [];
3597                $from->{'href'} = [];
3598                fill_from_file_info($diffinfo, @parents)
3599                        unless exists $diffinfo->{'from_file'};
3600                for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
3601                        $from->{'file'}[$i] =
3602                                defined $diffinfo->{'from_file'}[$i] ?
3603                                        $diffinfo->{'from_file'}[$i] :
3604                                        $diffinfo->{'to_file'};
3605                        if ($diffinfo->{'status'}[$i] ne "A") { # not new (added) file
3606                                $from->{'href'}[$i] = href(action=>"blob",
3607                                                           hash_base=>$parents[$i],
3608                                                           hash=>$diffinfo->{'from_id'}[$i],
3609                                                           file_name=>$from->{'file'}[$i]);
3610                        } else {
3611                                $from->{'href'}[$i] = undef;
3612                        }
3613                }
3614        } else {
3615                # ordinary (not combined) diff
3616                $from->{'file'} = $diffinfo->{'from_file'};
3617                if ($diffinfo->{'status'} ne "A") { # not new (added) file
3618                        $from->{'href'} = href(action=>"blob", hash_base=>$hash_parent,
3619                                               hash=>$diffinfo->{'from_id'},
3620                                               file_name=>$from->{'file'});
3621                } else {
3622                        delete $from->{'href'};
3623                }
3624        }
3625
3626        $to->{'file'} = $diffinfo->{'to_file'};
3627        if (!is_deleted($diffinfo)) { # file exists in result
3628                $to->{'href'} = href(action=>"blob", hash_base=>$hash,
3629                                     hash=>$diffinfo->{'to_id'},
3630                                     file_name=>$to->{'file'});
3631        } else {
3632                delete $to->{'href'};
3633        }
3634}
3635
3636## ......................................................................
3637## parse to array of hashes functions
3638
3639sub git_get_heads_list {
3640        my ($limit, @classes) = @_;
3641        @classes = ('heads') unless @classes;
3642        my @patterns = map { "refs/$_" } @classes;
3643        my @headslist;
3644
3645        open my $fd, '-|', git_cmd(), 'for-each-ref',
3646                ($limit ? '--count='.($limit+1) : ()), '--sort=-committerdate',
3647                '--format=%(objectname) %(refname) %(subject)%00%(committer)',
3648                @patterns
3649                or return;
3650        while (my $line = <$fd>) {
3651                my %ref_item;
3652
3653                chomp $line;
3654                my ($refinfo, $committerinfo) = split(/\0/, $line);
3655                my ($hash, $name, $title) = split(' ', $refinfo, 3);
3656                my ($committer, $epoch, $tz) =
3657                        ($committerinfo =~ /^(.*) ([0-9]+) (.*)$/);
3658                $ref_item{'fullname'}  = $name;
3659                $name =~ s!^refs/(?:head|remote)s/!!;
3660
3661                $ref_item{'name'}  = $name;
3662                $ref_item{'id'}    = $hash;
3663                $ref_item{'title'} = $title || '(no commit message)';
3664                $ref_item{'epoch'} = $epoch;
3665                if ($epoch) {
3666                        $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
3667                } else {
3668                        $ref_item{'age'} = "unknown";
3669                }
3670
3671                push @headslist, \%ref_item;
3672        }
3673        close $fd;
3674
3675        return wantarray ? @headslist : \@headslist;
3676}
3677
3678sub git_get_tags_list {
3679        my $limit = shift;
3680        my @tagslist;
3681
3682        open my $fd, '-|', git_cmd(), 'for-each-ref',
3683                ($limit ? '--count='.($limit+1) : ()), '--sort=-creatordate',
3684                '--format=%(objectname) %(objecttype) %(refname) '.
3685                '%(*objectname) %(*objecttype) %(subject)%00%(creator)',
3686                'refs/tags'
3687                or return;
3688        while (my $line = <$fd>) {
3689                my %ref_item;
3690
3691                chomp $line;
3692                my ($refinfo, $creatorinfo) = split(/\0/, $line);
3693                my ($id, $type, $name, $refid, $reftype, $title) = split(' ', $refinfo, 6);
3694                my ($creator, $epoch, $tz) =
3695                        ($creatorinfo =~ /^(.*) ([0-9]+) (.*)$/);
3696                $ref_item{'fullname'} = $name;
3697                $name =~ s!^refs/tags/!!;
3698
3699                $ref_item{'type'} = $type;
3700                $ref_item{'id'} = $id;
3701                $ref_item{'name'} = $name;
3702                if ($type eq "tag") {
3703                        $ref_item{'subject'} = $title;
3704                        $ref_item{'reftype'} = $reftype;
3705                        $ref_item{'refid'}   = $refid;
3706                } else {
3707                        $ref_item{'reftype'} = $type;
3708                        $ref_item{'refid'}   = $id;
3709                }
3710
3711                if ($type eq "tag" || $type eq "commit") {
3712                        $ref_item{'epoch'} = $epoch;
3713                        if ($epoch) {
3714                                $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
3715                        } else {
3716                                $ref_item{'age'} = "unknown";
3717                        }
3718                }
3719
3720                push @tagslist, \%ref_item;
3721        }
3722        close $fd;
3723
3724        return wantarray ? @tagslist : \@tagslist;
3725}
3726
3727## ----------------------------------------------------------------------
3728## filesystem-related functions
3729
3730sub get_file_owner {
3731        my $path = shift;
3732
3733        my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
3734        my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
3735        if (!defined $gcos) {
3736                return undef;
3737        }
3738        my $owner = $gcos;
3739        $owner =~ s/[,;].*$//;
3740        return to_utf8($owner);
3741}
3742
3743# assume that file exists
3744sub insert_file {
3745        my $filename = shift;
3746
3747        open my $fd, '<', $filename;
3748        print map { to_utf8($_) } <$fd>;
3749        close $fd;
3750}
3751
3752## ......................................................................
3753## mimetype related functions
3754
3755sub mimetype_guess_file {
3756        my $filename = shift;
3757        my $mimemap = shift;
3758        -r $mimemap or return undef;
3759
3760        my %mimemap;
3761        open(my $mh, '<', $mimemap) or return undef;
3762        while (<$mh>) {
3763                next if m/^#/; # skip comments
3764                my ($mimetype, @exts) = split(/\s+/);
3765                foreach my $ext (@exts) {
3766                        $mimemap{$ext} = $mimetype;
3767                }
3768        }
3769        close($mh);
3770
3771        $filename =~ /\.([^.]*)$/;
3772        return $mimemap{$1};
3773}
3774
3775sub mimetype_guess {
3776        my $filename = shift;
3777        my $mime;
3778        $filename =~ /\./ or return undef;
3779
3780        if ($mimetypes_file) {
3781                my $file = $mimetypes_file;
3782                if ($file !~ m!^/!) { # if it is relative path
3783                        # it is relative to project
3784                        $file = "$projectroot/$project/$file";
3785                }
3786                $mime = mimetype_guess_file($filename, $file);
3787        }
3788        $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
3789        return $mime;
3790}
3791
3792sub blob_mimetype {
3793        my $fd = shift;
3794        my $filename = shift;
3795
3796        if ($filename) {
3797                my $mime = mimetype_guess($filename);
3798                $mime and return $mime;
3799        }
3800
3801        # just in case
3802        return $default_blob_plain_mimetype unless $fd;
3803
3804        if (-T $fd) {
3805                return 'text/plain';
3806        } elsif (! $filename) {
3807                return 'application/octet-stream';
3808        } elsif ($filename =~ m/\.png$/i) {
3809                return 'image/png';
3810        } elsif ($filename =~ m/\.gif$/i) {
3811                return 'image/gif';
3812        } elsif ($filename =~ m/\.jpe?g$/i) {
3813                return 'image/jpeg';
3814        } else {
3815                return 'application/octet-stream';
3816        }
3817}
3818
3819sub blob_contenttype {
3820        my ($fd, $file_name, $type) = @_;
3821
3822        $type ||= blob_mimetype($fd, $file_name);
3823        if ($type eq 'text/plain' && defined $default_text_plain_charset) {
3824                $type .= "; charset=$default_text_plain_charset";
3825        }
3826
3827        return $type;
3828}
3829
3830# guess file syntax for syntax highlighting; return undef if no highlighting
3831# the name of syntax can (in the future) depend on syntax highlighter used
3832sub guess_file_syntax {
3833        my ($highlight, $mimetype, $file_name) = @_;
3834        return undef unless ($highlight && defined $file_name);
3835        my $basename = basename($file_name, '.in');
3836        return $highlight_basename{$basename}
3837                if exists $highlight_basename{$basename};
3838
3839        $basename =~ /\.([^.]*)$/;
3840        my $ext = $1 or return undef;
3841        return $highlight_ext{$ext}
3842                if exists $highlight_ext{$ext};
3843
3844        return undef;
3845}
3846
3847# run highlighter and return FD of its output,
3848# or return original FD if no highlighting
3849sub run_highlighter {
3850        my ($fd, $highlight, $syntax) = @_;
3851        return $fd unless ($highlight && defined $syntax);
3852
3853        close $fd;
3854        open $fd, quote_command(git_cmd(), "cat-file", "blob", $hash)." | ".
3855                  quote_command($highlight_bin).
3856                  " --replace-tabs=8 --fragment --syntax $syntax |"
3857                or die_error(500, "Couldn't open file or run syntax highlighter");
3858        return $fd;
3859}
3860
3861## ======================================================================
3862## functions printing HTML: header, footer, error page
3863
3864sub get_page_title {
3865        my $title = to_utf8($site_name);
3866
3867        unless (defined $project) {
3868                if (defined $project_filter) {
3869                        $title .= " - projects in '" . esc_path($project_filter) . "'";
3870                }
3871                return $title;
3872        }
3873        $title .= " - " . to_utf8($project);
3874
3875        return $title unless (defined $action);
3876        $title .= "/$action"; # $action is US-ASCII (7bit ASCII)
3877
3878        return $title unless (defined $file_name);
3879        $title .= " - " . esc_path($file_name);
3880        if ($action eq "tree" && $file_name !~ m|/$|) {
3881                $title .= "/";
3882        }
3883
3884        return $title;
3885}
3886
3887sub get_content_type_html {
3888        # require explicit support from the UA if we are to send the page as
3889        # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
3890        # we have to do this because MSIE sometimes globs '*/*', pretending to
3891        # support xhtml+xml but choking when it gets what it asked for.
3892        if (defined $cgi->http('HTTP_ACCEPT') &&
3893            $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ &&
3894            $cgi->Accept('application/xhtml+xml') != 0) {
3895                return 'application/xhtml+xml';
3896        } else {
3897                return 'text/html';
3898        }
3899}
3900
3901sub print_feed_meta {
3902        if (defined $project) {
3903                my %href_params = get_feed_info();
3904                if (!exists $href_params{'-title'}) {
3905                        $href_params{'-title'} = 'log';
3906                }
3907
3908                foreach my $format (qw(RSS Atom)) {
3909                        my $type = lc($format);
3910                        my %link_attr = (
3911                                '-rel' => 'alternate',
3912                                '-title' => esc_attr("$project - $href_params{'-title'} - $format feed"),
3913                                '-type' => "application/$type+xml"
3914                        );
3915
3916                        $href_params{'extra_options'} = undef;
3917                        $href_params{'action'} = $type;
3918                        $link_attr{'-href'} = href(%href_params);
3919                        print "<link ".
3920                              "rel=\"$link_attr{'-rel'}\" ".
3921                              "title=\"$link_attr{'-title'}\" ".
3922                              "href=\"$link_attr{'-href'}\" ".
3923                              "type=\"$link_attr{'-type'}\" ".
3924                              "/>\n";
3925
3926                        $href_params{'extra_options'} = '--no-merges';
3927                        $link_attr{'-href'} = href(%href_params);
3928                        $link_attr{'-title'} .= ' (no merges)';
3929                        print "<link ".
3930                              "rel=\"$link_attr{'-rel'}\" ".
3931                              "title=\"$link_attr{'-title'}\" ".
3932                              "href=\"$link_attr{'-href'}\" ".
3933                              "type=\"$link_attr{'-type'}\" ".
3934                              "/>\n";
3935                }
3936
3937        } else {
3938                printf('<link rel="alternate" title="%s projects list" '.
3939                       'href="%s" type="text/plain; charset=utf-8" />'."\n",
3940                       esc_attr($site_name), href(project=>undef, action=>"project_index"));
3941                printf('<link rel="alternate" title="%s projects feeds" '.
3942                       'href="%s" type="text/x-opml" />'."\n",
3943                       esc_attr($site_name), href(project=>undef, action=>"opml"));
3944        }
3945}
3946
3947sub print_header_links {
3948        my $status = shift;
3949
3950        # print out each stylesheet that exist, providing backwards capability
3951        # for those people who defined $stylesheet in a config file
3952        if (defined $stylesheet) {
3953                print '<link rel="stylesheet" type="text/css" href="'.esc_url($stylesheet).'"/>'."\n";
3954        } else {
3955                foreach my $stylesheet (@stylesheets) {
3956                        next unless $stylesheet;
3957                        print '<link rel="stylesheet" type="text/css" href="'.esc_url($stylesheet).'"/>'."\n";
3958                }
3959        }
3960        print_feed_meta()
3961                if ($status eq '200 OK');
3962        if (defined $favicon) {
3963                print qq(<link rel="shortcut icon" href=").esc_url($favicon).qq(" type="image/png" />\n);
3964        }
3965}
3966
3967sub print_nav_breadcrumbs_path {
3968        my $dirprefix = undef;
3969        while (my $part = shift) {
3970                $dirprefix .= "/" if defined $dirprefix;
3971                $dirprefix .= $part;
3972                print $cgi->a({-href => href(project => undef,
3973                                             project_filter => $dirprefix,
3974                                             action => "project_list")},
3975                              esc_html($part)) . " / ";
3976        }
3977}
3978
3979sub print_nav_breadcrumbs {
3980        my %opts = @_;
3981
3982        print $cgi->a({-href => esc_url($home_link)}, $home_link_str) . " / ";
3983        if (defined $project) {
3984                my @dirname = split '/', $project;
3985                my $projectbasename = pop @dirname;
3986                print_nav_breadcrumbs_path(@dirname);
3987                print $cgi->a({-href => href(action=>"summary")}, esc_html($projectbasename));
3988                if (defined $action) {
3989                        my $action_print = $action ;
3990                        if (defined $opts{-action_extra}) {
3991                                $action_print = $cgi->a({-href => href(action=>$action)},
3992                                        $action);
3993                        }
3994                        print " / $action_print";
3995                }
3996                if (defined $opts{-action_extra}) {
3997                        print " / $opts{-action_extra}";
3998                }
3999                print "\n";
4000        } elsif (defined $project_filter) {
4001                print_nav_breadcrumbs_path(split '/', $project_filter);
4002        }
4003}
4004
4005sub print_search_form {
4006        if (!defined $searchtext) {
4007                $searchtext = "";
4008        }
4009        my $search_hash;
4010        if (defined $hash_base) {
4011                $search_hash = $hash_base;
4012        } elsif (defined $hash) {
4013                $search_hash = $hash;
4014        } else {
4015                $search_hash = "HEAD";
4016        }
4017        my $action = $my_uri;
4018        my $use_pathinfo = gitweb_check_feature('pathinfo');
4019        if ($use_pathinfo) {
4020                $action .= "/".esc_url($project);
4021        }
4022        print $cgi->startform(-method => "get", -action => $action) .
4023              "<div class=\"search\">\n" .
4024              (!$use_pathinfo &&
4025              $cgi->input({-name=>"p", -value=>$project, -type=>"hidden"}) . "\n") .
4026              $cgi->input({-name=>"a", -value=>"search", -type=>"hidden"}) . "\n" .
4027              $cgi->input({-name=>"h", -value=>$search_hash, -type=>"hidden"}) . "\n" .
4028              $cgi->popup_menu(-name => 'st', -default => 'commit',
4029                               -values => ['commit', 'grep', 'author', 'committer', 'pickaxe']) .
4030              $cgi->sup($cgi->a({-href => href(action=>"search_help")}, "?")) .
4031              " search:\n",
4032              $cgi->textfield(-name => "s", -value => $searchtext, -override => 1) . "\n" .
4033              "<span title=\"Extended regular expression\">" .
4034              $cgi->checkbox(-name => 'sr', -value => 1, -label => 're',
4035                             -checked => $search_use_regexp) .
4036              "</span>" .
4037              "</div>" .
4038              $cgi->end_form() . "\n";
4039}
4040
4041sub git_header_html {
4042        my $status = shift || "200 OK";
4043        my $expires = shift;
4044        my %opts = @_;
4045
4046        my $title = get_page_title();
4047        my $content_type = get_content_type_html();
4048        print $cgi->header(-type=>$content_type, -charset => 'utf-8',
4049                           -status=> $status, -expires => $expires)
4050                unless ($opts{'-no_http_header'});
4051        my $mod_perl_version = $ENV{'MOD_PERL'} ? " $ENV{'MOD_PERL'}" : '';
4052        print <<EOF;
4053<?xml version="1.0" encoding="utf-8"?>
4054<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
4055<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
4056<!-- git web interface version $version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
4057<!-- git core binaries version $git_version -->
4058<head>
4059<meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
4060<meta name="generator" content="gitweb/$version git/$git_version$mod_perl_version"/>
4061<meta name="robots" content="index, nofollow"/>
4062<title>$title</title>
4063EOF
4064        # the stylesheet, favicon etc urls won't work correctly with path_info
4065        # unless we set the appropriate base URL
4066        if ($ENV{'PATH_INFO'}) {
4067                print "<base href=\"".esc_url($base_url)."\" />\n";
4068        }
4069        print_header_links($status);
4070
4071        if (defined $site_html_head_string) {
4072                print to_utf8($site_html_head_string);
4073        }
4074
4075        print "</head>\n" .
4076              "<body>\n";
4077
4078        if (defined $site_header && -f $site_header) {
4079                insert_file($site_header);
4080        }
4081
4082        print "<div class=\"page_header\">\n";
4083        if (defined $logo) {
4084                print $cgi->a({-href => esc_url($logo_url),
4085                               -title => $logo_label},
4086                              $cgi->img({-src => esc_url($logo),
4087                                         -width => 72, -height => 27,
4088                                         -alt => "git",
4089                                         -class => "logo"}));
4090        }
4091        print_nav_breadcrumbs(%opts);
4092        print "</div>\n";
4093
4094        my $have_search = gitweb_check_feature('search');
4095        if (defined $project && $have_search) {
4096                print_search_form();
4097        }
4098}
4099
4100sub git_footer_html {
4101        my $feed_class = 'rss_logo';
4102
4103        print "<div class=\"page_footer\">\n";
4104        if (defined $project) {
4105                my $descr = git_get_project_description($project);
4106                if (defined $descr) {
4107                        print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
4108                }
4109
4110                my %href_params = get_feed_info();
4111                if (!%href_params) {
4112                        $feed_class .= ' generic';
4113                }
4114                $href_params{'-title'} ||= 'log';
4115
4116                foreach my $format (qw(RSS Atom)) {
4117                        $href_params{'action'} = lc($format);
4118                        print $cgi->a({-href => href(%href_params),
4119                                      -title => "$href_params{'-title'} $format feed",
4120                                      -class => $feed_class}, $format)."\n";
4121                }
4122
4123        } else {
4124                print $cgi->a({-href => href(project=>undef, action=>"opml",
4125                                             project_filter => $project_filter),
4126                              -class => $feed_class}, "OPML") . " ";
4127                print $cgi->a({-href => href(project=>undef, action=>"project_index",
4128                                             project_filter => $project_filter),
4129                              -class => $feed_class}, "TXT") . "\n";
4130        }
4131        print "</div>\n"; # class="page_footer"
4132
4133        if (defined $t0 && gitweb_check_feature('timed')) {
4134                print "<div id=\"generating_info\">\n";
4135                print 'This page took '.
4136                      '<span id="generating_time" class="time_span">'.
4137                      tv_interval($t0, [ gettimeofday() ]).
4138                      ' seconds </span>'.
4139                      ' and '.
4140                      '<span id="generating_cmd">'.
4141                      $number_of_git_cmds.
4142                      '</span> git commands '.
4143                      " to generate.\n";
4144                print "</div>\n"; # class="page_footer"
4145        }
4146
4147        if (defined $site_footer && -f $site_footer) {
4148                insert_file($site_footer);
4149        }
4150
4151        print qq!<script type="text/javascript" src="!.esc_url($javascript).qq!"></script>\n!;
4152        if (defined $action &&
4153            $action eq 'blame_incremental') {
4154                print qq!<script type="text/javascript">\n!.
4155                      qq!startBlame("!. href(action=>"blame_data", -replay=>1) .qq!",\n!.
4156                      qq!           "!. href() .qq!");\n!.
4157                      qq!</script>\n!;
4158        } else {
4159                my ($jstimezone, $tz_cookie, $datetime_class) =
4160                        gitweb_get_feature('javascript-timezone');
4161
4162                print qq!<script type="text/javascript">\n!.
4163                      qq!window.onload = function () {\n!;
4164                if (gitweb_check_feature('javascript-actions')) {
4165                        print qq!       fixLinks();\n!;
4166                }
4167                if ($jstimezone && $tz_cookie && $datetime_class) {
4168                        print qq!       var tz_cookie = { name: '$tz_cookie', expires: 14, path: '/' };\n!. # in days
4169                              qq!       onloadTZSetup('$jstimezone', tz_cookie, '$datetime_class');\n!;
4170                }
4171                print qq!};\n!.
4172                      qq!</script>\n!;
4173        }
4174
4175        print "</body>\n" .
4176              "</html>";
4177}
4178
4179# die_error(<http_status_code>, <error_message>[, <detailed_html_description>])
4180# Example: die_error(404, 'Hash not found')
4181# By convention, use the following status codes (as defined in RFC 2616):
4182# 400: Invalid or missing CGI parameters, or
4183#      requested object exists but has wrong type.
4184# 403: Requested feature (like "pickaxe" or "snapshot") not enabled on
4185#      this server or project.
4186# 404: Requested object/revision/project doesn't exist.
4187# 500: The server isn't configured properly, or
4188#      an internal error occurred (e.g. failed assertions caused by bugs), or
4189#      an unknown error occurred (e.g. the git binary died unexpectedly).
4190# 503: The server is currently unavailable (because it is overloaded,
4191#      or down for maintenance).  Generally, this is a temporary state.
4192sub die_error {
4193        my $status = shift || 500;
4194        my $error = esc_html(shift) || "Internal Server Error";
4195        my $extra = shift;
4196        my %opts = @_;
4197
4198        my %http_responses = (
4199                400 => '400 Bad Request',
4200                403 => '403 Forbidden',
4201                404 => '404 Not Found',
4202                500 => '500 Internal Server Error',
4203                503 => '503 Service Unavailable',
4204        );
4205        git_header_html($http_responses{$status}, undef, %opts);
4206        print <<EOF;
4207<div class="page_body">
4208<br /><br />
4209$status - $error
4210<br />
4211EOF
4212        if (defined $extra) {
4213                print "<hr />\n" .
4214                      "$extra\n";
4215        }
4216        print "</div>\n";
4217
4218        git_footer_html();
4219        goto DONE_GITWEB
4220                unless ($opts{'-error_handler'});
4221}
4222
4223## ----------------------------------------------------------------------
4224## functions printing or outputting HTML: navigation
4225
4226sub git_print_page_nav {
4227        my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
4228        $extra = '' if !defined $extra; # pager or formats
4229
4230        my @navs = qw(summary shortlog log commit commitdiff tree);
4231        if ($suppress) {
4232                @navs = grep { $_ ne $suppress } @navs;
4233        }
4234
4235        my %arg = map { $_ => {action=>$_} } @navs;
4236        if (defined $head) {
4237                for (qw(commit commitdiff)) {
4238                        $arg{$_}{'hash'} = $head;
4239                }
4240                if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
4241                        for (qw(shortlog log)) {
4242                                $arg{$_}{'hash'} = $head;
4243                        }
4244                }
4245        }
4246
4247        $arg{'tree'}{'hash'} = $treehead if defined $treehead;
4248        $arg{'tree'}{'hash_base'} = $treebase if defined $treebase;
4249
4250        my @actions = gitweb_get_feature('actions');
4251        my %repl = (
4252                '%' => '%',
4253                'n' => $project,         # project name
4254                'f' => $git_dir,         # project path within filesystem
4255                'h' => $treehead || '',  # current hash ('h' parameter)
4256                'b' => $treebase || '',  # hash base ('hb' parameter)
4257        );
4258        while (@actions) {
4259                my ($label, $link, $pos) = splice(@actions,0,3);
4260                # insert
4261                @navs = map { $_ eq $pos ? ($_, $label) : $_ } @navs;
4262                # munch munch
4263                $link =~ s/%([%nfhb])/$repl{$1}/g;
4264                $arg{$label}{'_href'} = $link;
4265        }
4266
4267        print "<div class=\"page_nav\">\n" .
4268                (join " | ",
4269                 map { $_ eq $current ?
4270                       $_ : $cgi->a({-href => ($arg{$_}{_href} ? $arg{$_}{_href} : href(%{$arg{$_}}))}, "$_")
4271                 } @navs);
4272        print "<br/>\n$extra<br/>\n" .
4273              "</div>\n";
4274}
4275
4276# returns a submenu for the nagivation of the refs views (tags, heads,
4277# remotes) with the current view disabled and the remotes view only
4278# available if the feature is enabled
4279sub format_ref_views {
4280        my ($current) = @_;
4281        my @ref_views = qw{tags heads};
4282        push @ref_views, 'remotes' if gitweb_check_feature('remote_heads');
4283        return join " | ", map {
4284                $_ eq $current ? $_ :
4285                $cgi->a({-href => href(action=>$_)}, $_)
4286        } @ref_views
4287}
4288
4289sub format_paging_nav {
4290        my ($action, $page, $has_next_link) = @_;
4291        my $paging_nav;
4292
4293
4294        if ($page > 0) {
4295                $paging_nav .=
4296                        $cgi->a({-href => href(-replay=>1, page=>undef)}, "first") .
4297                        " &sdot; " .
4298                        $cgi->a({-href => href(-replay=>1, page=>$page-1),
4299                                 -accesskey => "p", -title => "Alt-p"}, "prev");
4300        } else {
4301                $paging_nav .= "first &sdot; prev";
4302        }
4303
4304        if ($has_next_link) {
4305                $paging_nav .= " &sdot; " .
4306                        $cgi->a({-href => href(-replay=>1, page=>$page+1),
4307                                 -accesskey => "n", -title => "Alt-n"}, "next");
4308        } else {
4309                $paging_nav .= " &sdot; next";
4310        }
4311
4312        return $paging_nav;
4313}
4314
4315## ......................................................................
4316## functions printing or outputting HTML: div
4317
4318sub git_print_header_div {
4319        my ($action, $title, $hash, $hash_base) = @_;
4320        my %args = ();
4321
4322        $args{'action'} = $action;
4323        $args{'hash'} = $hash if $hash;
4324        $args{'hash_base'} = $hash_base if $hash_base;
4325
4326        print "<div class=\"header\">\n" .
4327              $cgi->a({-href => href(%args), -class => "title"},
4328              $title ? $title : $action) .
4329              "\n</div>\n";
4330}
4331
4332sub format_repo_url {
4333        my ($name, $url) = @_;
4334        return "<tr class=\"metadata_url\"><td>$name</td><td>$url</td></tr>\n";
4335}
4336
4337# Group output by placing it in a DIV element and adding a header.
4338# Options for start_div() can be provided by passing a hash reference as the
4339# first parameter to the function.
4340# Options to git_print_header_div() can be provided by passing an array
4341# reference. This must follow the options to start_div if they are present.
4342# The content can be a scalar, which is output as-is, a scalar reference, which
4343# is output after html escaping, an IO handle passed either as *handle or
4344# *handle{IO}, or a function reference. In the latter case all following
4345# parameters will be taken as argument to the content function call.
4346sub git_print_section {
4347        my ($div_args, $header_args, $content);
4348        my $arg = shift;
4349        if (ref($arg) eq 'HASH') {
4350                $div_args = $arg;
4351                $arg = shift;
4352        }
4353        if (ref($arg) eq 'ARRAY') {
4354                $header_args = $arg;
4355                $arg = shift;
4356        }
4357        $content = $arg;
4358
4359        print $cgi->start_div($div_args);
4360        git_print_header_div(@$header_args);
4361
4362        if (ref($content) eq 'CODE') {
4363                $content->(@_);
4364        } elsif (ref($content) eq 'SCALAR') {
4365                print esc_html($$content);
4366        } elsif (ref($content) eq 'GLOB' or ref($content) eq 'IO::Handle') {
4367                print <$content>;
4368        } elsif (!ref($content) && defined($content)) {
4369                print $content;
4370        }
4371
4372        print $cgi->end_div;
4373}
4374
4375sub format_timestamp_html {
4376        my $date = shift;
4377        my $strtime = $date->{'rfc2822'};
4378
4379        my (undef, undef, $datetime_class) =
4380                gitweb_get_feature('javascript-timezone');
4381        if ($datetime_class) {
4382                $strtime = qq!<span class="$datetime_class">$strtime</span>!;
4383        }
4384
4385        my $localtime_format = '(%02d:%02d %s)';
4386        if ($date->{'hour_local'} < 6) {
4387                $localtime_format = '(<span class="atnight">%02d:%02d</span> %s)';
4388        }
4389        $strtime .= ' ' .
4390                    sprintf($localtime_format,
4391                            $date->{'hour_local'}, $date->{'minute_local'}, $date->{'tz_local'});
4392
4393        return $strtime;
4394}
4395
4396# Outputs the author name and date in long form
4397sub git_print_authorship {
4398        my $co = shift;
4399        my %opts = @_;
4400        my $tag = $opts{-tag} || 'div';
4401        my $author = $co->{'author_name'};
4402
4403        my %ad = parse_date($co->{'author_epoch'}, $co->{'author_tz'});
4404        print "<$tag class=\"author_date\">" .
4405              format_search_author($author, "author", esc_html($author)) .
4406              " [".format_timestamp_html(\%ad)."]".
4407              git_get_avatar($co->{'author_email'}, -pad_before => 1) .
4408              "</$tag>\n";
4409}
4410
4411# Outputs table rows containing the full author or committer information,
4412# in the format expected for 'commit' view (& similar).
4413# Parameters are a commit hash reference, followed by the list of people
4414# to output information for. If the list is empty it defaults to both
4415# author and committer.
4416sub git_print_authorship_rows {
4417        my $co = shift;
4418        # too bad we can't use @people = @_ || ('author', 'committer')
4419        my @people = @_;
4420        @people = ('author', 'committer') unless @people;
4421        foreach my $who (@people) {
4422                my %wd = parse_date($co->{"${who}_epoch"}, $co->{"${who}_tz"});
4423                print "<tr><td>$who</td><td>" .
4424                      format_search_author($co->{"${who}_name"}, $who,
4425                                           esc_html($co->{"${who}_name"})) . " " .
4426                      format_search_author($co->{"${who}_email"}, $who,
4427                                           esc_html("<" . $co->{"${who}_email"} . ">")) .
4428                      "</td><td rowspan=\"2\">" .
4429                      git_get_avatar($co->{"${who}_email"}, -size => 'double') .
4430                      "</td></tr>\n" .
4431                      "<tr>" .
4432                      "<td></td><td>" .
4433                      format_timestamp_html(\%wd) .
4434                      "</td>" .
4435                      "</tr>\n";
4436        }
4437}
4438
4439sub git_print_page_path {
4440        my $name = shift;
4441        my $type = shift;
4442        my $hb = shift;
4443
4444
4445        print "<div class=\"page_path\">";
4446        print $cgi->a({-href => href(action=>"tree", hash_base=>$hb),
4447                      -title => 'tree root'}, to_utf8("[$project]"));
4448        print " / ";
4449        if (defined $name) {
4450                my @dirname = split '/', $name;
4451                my $basename = pop @dirname;
4452                my $fullname = '';
4453
4454                foreach my $dir (@dirname) {
4455                        $fullname .= ($fullname ? '/' : '') . $dir;
4456                        print $cgi->a({-href => href(action=>"tree", file_name=>$fullname,
4457                                                     hash_base=>$hb),
4458                                      -title => $fullname}, esc_path($dir));
4459                        print " / ";
4460                }
4461                if (defined $type && $type eq 'blob') {
4462                        print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name,
4463                                                     hash_base=>$hb),
4464                                      -title => $name}, esc_path($basename));
4465                } elsif (defined $type && $type eq 'tree') {
4466                        print $cgi->a({-href => href(action=>"tree", file_name=>$file_name,
4467                                                     hash_base=>$hb),
4468                                      -title => $name}, esc_path($basename));
4469                        print " / ";
4470                } else {
4471                        print esc_path($basename);
4472                }
4473        }
4474        print "<br/></div>\n";
4475}
4476
4477sub git_print_log {
4478        my $log = shift;
4479        my %opts = @_;
4480
4481        if ($opts{'-remove_title'}) {
4482                # remove title, i.e. first line of log
4483                shift @$log;
4484        }
4485        # remove leading empty lines
4486        while (defined $log->[0] && $log->[0] eq "") {
4487                shift @$log;
4488        }
4489
4490        # print log
4491        my $skip_blank_line = 0;
4492        foreach my $line (@$log) {
4493                if ($line =~ m/^\s*([A-Z][-A-Za-z]*-[Bb]y|C[Cc]): /) {
4494                        if (! $opts{'-remove_signoff'}) {
4495                                print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
4496                                $skip_blank_line = 1;
4497                        }
4498                        next;
4499                }
4500
4501                if ($line =~ m,\s*([a-z]*link): (https?://\S+),i) {
4502                        if (! $opts{'-remove_signoff'}) {
4503                                print "<span class=\"signoff\">" . esc_html($1) . ": " .
4504                                        "<a href=\"" . esc_html($2) . "\">" . esc_html($2) . "</a>" .
4505                                        "</span><br/>\n";
4506                                $skip_blank_line = 1;
4507                        }
4508                        next;
4509                }
4510
4511                # print only one empty line
4512                # do not print empty line after signoff
4513                if ($line eq "") {
4514                        next if ($skip_blank_line);
4515                        $skip_blank_line = 1;
4516                } else {
4517                        $skip_blank_line = 0;
4518                }
4519
4520                print format_log_line_html($line) . "<br/>\n";
4521        }
4522
4523        if ($opts{'-final_empty_line'}) {
4524                # end with single empty line
4525                print "<br/>\n" unless $skip_blank_line;
4526        }
4527}
4528
4529# return link target (what link points to)
4530sub git_get_link_target {
4531        my $hash = shift;
4532        my $link_target;
4533
4534        # read link
4535        open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
4536                or return;
4537        {
4538                local $/ = undef;
4539                $link_target = <$fd>;
4540        }
4541        close $fd
4542                or return;
4543
4544        return $link_target;
4545}
4546
4547# given link target, and the directory (basedir) the link is in,
4548# return target of link relative to top directory (top tree);
4549# return undef if it is not possible (including absolute links).
4550sub normalize_link_target {
4551        my ($link_target, $basedir) = @_;
4552
4553        # absolute symlinks (beginning with '/') cannot be normalized
4554        return if (substr($link_target, 0, 1) eq '/');
4555
4556        # normalize link target to path from top (root) tree (dir)
4557        my $path;
4558        if ($basedir) {
4559                $path = $basedir . '/' . $link_target;
4560        } else {
4561                # we are in top (root) tree (dir)
4562                $path = $link_target;
4563        }
4564
4565        # remove //, /./, and /../
4566        my @path_parts;
4567        foreach my $part (split('/', $path)) {
4568                # discard '.' and ''
4569                next if (!$part || $part eq '.');
4570                # handle '..'
4571                if ($part eq '..') {
4572                        if (@path_parts) {
4573                                pop @path_parts;
4574                        } else {
4575                                # link leads outside repository (outside top dir)
4576                                return;
4577                        }
4578                } else {
4579                        push @path_parts, $part;
4580                }
4581        }
4582        $path = join('/', @path_parts);
4583
4584        return $path;
4585}
4586
4587# print tree entry (row of git_tree), but without encompassing <tr> element
4588sub git_print_tree_entry {
4589        my ($t, $basedir, $hash_base, $have_blame) = @_;
4590
4591        my %base_key = ();
4592        $base_key{'hash_base'} = $hash_base if defined $hash_base;
4593
4594        # The format of a table row is: mode list link.  Where mode is
4595        # the mode of the entry, list is the name of the entry, an href,
4596        # and link is the action links of the entry.
4597
4598        print "<td class=\"mode\">" . mode_str($t->{'mode'}) . "</td>\n";
4599        if (exists $t->{'size'}) {
4600                print "<td class=\"size\">$t->{'size'}</td>\n";
4601        }
4602        if ($t->{'type'} eq "blob") {
4603                print "<td class=\"list\">" .
4604                        $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
4605                                               file_name=>"$basedir$t->{'name'}", %base_key),
4606                                -class => "list"}, esc_path($t->{'name'}));
4607                if (S_ISLNK(oct $t->{'mode'})) {
4608                        my $link_target = git_get_link_target($t->{'hash'});
4609                        if ($link_target) {
4610                                my $norm_target = normalize_link_target($link_target, $basedir);
4611                                if (defined $norm_target) {
4612                                        print " -> " .
4613                                              $cgi->a({-href => href(action=>"object", hash_base=>$hash_base,
4614                                                                     file_name=>$norm_target),
4615                                                       -title => $norm_target}, esc_path($link_target));
4616                                } else {
4617                                        print " -> " . esc_path($link_target);
4618                                }
4619                        }
4620                }
4621                print "</td>\n";
4622                print "<td class=\"link\">";
4623                print $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
4624                                             file_name=>"$basedir$t->{'name'}", %base_key)},
4625                              "blob");
4626                if ($have_blame) {
4627                        print " | " .
4628                              $cgi->a({-href => href(action=>"blame", hash=>$t->{'hash'},
4629                                                     file_name=>"$basedir$t->{'name'}", %base_key)},
4630                                      "blame");
4631                }
4632                if (defined $hash_base) {
4633                        print " | " .
4634                              $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
4635                                                     hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
4636                                      "history");
4637                }
4638                print " | " .
4639                        $cgi->a({-href => href(action=>"blob_plain", hash_base=>$hash_base,
4640                                               file_name=>"$basedir$t->{'name'}")},
4641                                "raw");
4642                print "</td>\n";
4643
4644        } elsif ($t->{'type'} eq "tree") {
4645                print "<td class=\"list\">";
4646                print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
4647                                             file_name=>"$basedir$t->{'name'}",
4648                                             %base_key)},
4649                              esc_path($t->{'name'}));
4650                print "</td>\n";
4651                print "<td class=\"link\">";
4652                print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
4653                                             file_name=>"$basedir$t->{'name'}",
4654                                             %base_key)},
4655                              "tree");
4656                if (defined $hash_base) {
4657                        print " | " .
4658                              $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
4659                                                     file_name=>"$basedir$t->{'name'}")},
4660                                      "history");
4661                }
4662                print "</td>\n";
4663        } else {
4664                # unknown object: we can only present history for it
4665                # (this includes 'commit' object, i.e. submodule support)
4666                print "<td class=\"list\">" .
4667                      esc_path($t->{'name'}) .
4668                      "</td>\n";
4669                print "<td class=\"link\">";
4670                if (defined $hash_base) {
4671                        print $cgi->a({-href => href(action=>"history",
4672                                                     hash_base=>$hash_base,
4673                                                     file_name=>"$basedir$t->{'name'}")},
4674                                      "history");
4675                }
4676                print "</td>\n";
4677        }
4678}
4679
4680## ......................................................................
4681## functions printing large fragments of HTML
4682
4683# get pre-image filenames for merge (combined) diff
4684sub fill_from_file_info {
4685        my ($diff, @parents) = @_;
4686
4687        $diff->{'from_file'} = [ ];
4688        $diff->{'from_file'}[$diff->{'nparents'} - 1] = undef;
4689        for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
4690                if ($diff->{'status'}[$i] eq 'R' ||
4691                    $diff->{'status'}[$i] eq 'C') {
4692                        $diff->{'from_file'}[$i] =
4693                                git_get_path_by_hash($parents[$i], $diff->{'from_id'}[$i]);
4694                }
4695        }
4696
4697        return $diff;
4698}
4699
4700# is current raw difftree line of file deletion
4701sub is_deleted {
4702        my $diffinfo = shift;
4703
4704        return $diffinfo->{'to_id'} eq ('0' x 40);
4705}
4706
4707# does patch correspond to [previous] difftree raw line
4708# $diffinfo  - hashref of parsed raw diff format
4709# $patchinfo - hashref of parsed patch diff format
4710#              (the same keys as in $diffinfo)
4711sub is_patch_split {
4712        my ($diffinfo, $patchinfo) = @_;
4713
4714        return defined $diffinfo && defined $patchinfo
4715                && $diffinfo->{'to_file'} eq $patchinfo->{'to_file'};
4716}
4717
4718
4719sub git_difftree_body {
4720        my ($difftree, $hash, @parents) = @_;
4721        my ($parent) = $parents[0];
4722        my $have_blame = gitweb_check_feature('blame');
4723        print "<div class=\"list_head\">\n";
4724        if ($#{$difftree} > 10) {
4725                print(($#{$difftree} + 1) . " files changed:\n");
4726        }
4727        print "</div>\n";
4728
4729        print "<table class=\"" .
4730              (@parents > 1 ? "combined " : "") .
4731              "diff_tree\">\n";
4732
4733        # header only for combined diff in 'commitdiff' view
4734        my $has_header = @$difftree && @parents > 1 && $action eq 'commitdiff';
4735        if ($has_header) {
4736                # table header
4737                print "<thead><tr>\n" .
4738                       "<th></th><th></th>\n"; # filename, patchN link
4739                for (my $i = 0; $i < @parents; $i++) {
4740                        my $par = $parents[$i];
4741                        print "<th>" .
4742                              $cgi->a({-href => href(action=>"commitdiff",
4743                                                     hash=>$hash, hash_parent=>$par),
4744                                       -title => 'commitdiff to parent number ' .
4745                                                  ($i+1) . ': ' . substr($par,0,7)},
4746                                      $i+1) .
4747                              "&nbsp;</th>\n";
4748                }
4749                print "</tr></thead>\n<tbody>\n";
4750        }
4751
4752        my $alternate = 1;
4753        my $patchno = 0;
4754        foreach my $line (@{$difftree}) {
4755                my $diff = parsed_difftree_line($line);
4756
4757                if ($alternate) {
4758                        print "<tr class=\"dark\">\n";
4759                } else {
4760                        print "<tr class=\"light\">\n";
4761                }
4762                $alternate ^= 1;
4763
4764                if (exists $diff->{'nparents'}) { # combined diff
4765
4766                        fill_from_file_info($diff, @parents)
4767                                unless exists $diff->{'from_file'};
4768
4769                        if (!is_deleted($diff)) {
4770                                # file exists in the result (child) commit
4771                                print "<td>" .
4772                                      $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
4773                                                             file_name=>$diff->{'to_file'},
4774                                                             hash_base=>$hash),
4775                                              -class => "list"}, esc_path($diff->{'to_file'})) .
4776                                      "</td>\n";
4777                        } else {
4778                                print "<td>" .
4779                                      esc_path($diff->{'to_file'}) .
4780                                      "</td>\n";
4781                        }
4782
4783                        if ($action eq 'commitdiff') {
4784                                # link to patch
4785                                $patchno++;
4786                                print "<td class=\"link\">" .
4787                                      $cgi->a({-href => href(-anchor=>"patch$patchno")},
4788                                              "patch") .
4789                                      " | " .
4790                                      "</td>\n";
4791                        }
4792
4793                        my $has_history = 0;
4794                        my $not_deleted = 0;
4795                        for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
4796                                my $hash_parent = $parents[$i];
4797                                my $from_hash = $diff->{'from_id'}[$i];
4798                                my $from_path = $diff->{'from_file'}[$i];
4799                                my $status = $diff->{'status'}[$i];
4800
4801                                $has_history ||= ($status ne 'A');
4802                                $not_deleted ||= ($status ne 'D');
4803
4804                                if ($status eq 'A') {
4805                                        print "<td  class=\"link\" align=\"right\"> | </td>\n";
4806                                } elsif ($status eq 'D') {
4807                                        print "<td class=\"link\">" .
4808                                              $cgi->a({-href => href(action=>"blob",
4809                                                                     hash_base=>$hash,
4810                                                                     hash=>$from_hash,
4811                                                                     file_name=>$from_path)},
4812                                                      "blob" . ($i+1)) .
4813                                              " | </td>\n";
4814                                } else {
4815                                        if ($diff->{'to_id'} eq $from_hash) {
4816                                                print "<td class=\"link nochange\">";
4817                                        } else {
4818                                                print "<td class=\"link\">";
4819                                        }
4820                                        print $cgi->a({-href => href(action=>"blobdiff",
4821                                                                     hash=>$diff->{'to_id'},
4822                                                                     hash_parent=>$from_hash,
4823                                                                     hash_base=>$hash,
4824                                                                     hash_parent_base=>$hash_parent,
4825                                                                     file_name=>$diff->{'to_file'},
4826                                                                     file_parent=>$from_path)},
4827                                                      "diff" . ($i+1)) .
4828                                              " | </td>\n";
4829                                }
4830                        }
4831
4832                        print "<td class=\"link\">";
4833                        if ($not_deleted) {
4834                                print $cgi->a({-href => href(action=>"blob",
4835                                                             hash=>$diff->{'to_id'},
4836                                                             file_name=>$diff->{'to_file'},
4837                                                             hash_base=>$hash)},
4838                                              "blob");
4839                                print " | " if ($has_history);
4840                        }
4841                        if ($has_history) {
4842                                print $cgi->a({-href => href(action=>"history",
4843                                                             file_name=>$diff->{'to_file'},
4844                                                             hash_base=>$hash)},
4845                                              "history");
4846                        }
4847                        print "</td>\n";
4848
4849                        print "</tr>\n";
4850                        next; # instead of 'else' clause, to avoid extra indent
4851                }
4852                # else ordinary diff
4853
4854                my ($to_mode_oct, $to_mode_str, $to_file_type);
4855                my ($from_mode_oct, $from_mode_str, $from_file_type);
4856                if ($diff->{'to_mode'} ne ('0' x 6)) {
4857                        $to_mode_oct = oct $diff->{'to_mode'};
4858                        if (S_ISREG($to_mode_oct)) { # only for regular file
4859                                $to_mode_str = sprintf("%04o", $to_mode_oct & 0777); # permission bits
4860                        }
4861                        $to_file_type = file_type($diff->{'to_mode'});
4862                }
4863                if ($diff->{'from_mode'} ne ('0' x 6)) {
4864                        $from_mode_oct = oct $diff->{'from_mode'};
4865                        if (S_ISREG($from_mode_oct)) { # only for regular file
4866                                $from_mode_str = sprintf("%04o", $from_mode_oct & 0777); # permission bits
4867                        }
4868                        $from_file_type = file_type($diff->{'from_mode'});
4869                }
4870
4871                if ($diff->{'status'} eq "A") { # created
4872                        my $mode_chng = "<span class=\"file_status new\">[new $to_file_type";
4873                        $mode_chng   .= " with mode: $to_mode_str" if $to_mode_str;
4874                        $mode_chng   .= "]</span>";
4875                        print "<td>";
4876                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
4877                                                     hash_base=>$hash, file_name=>$diff->{'file'}),
4878                                      -class => "list"}, esc_path($diff->{'file'}));
4879                        print "</td>\n";
4880                        print "<td>$mode_chng</td>\n";
4881                        print "<td class=\"link\">";
4882                        if ($action eq 'commitdiff') {
4883                                # link to patch
4884                                $patchno++;
4885                                print $cgi->a({-href => href(-anchor=>"patch$patchno")},
4886                                              "patch") .
4887                                      " | ";
4888                        }
4889                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
4890                                                     hash_base=>$hash, file_name=>$diff->{'file'})},
4891                                      "blob");
4892                        print "</td>\n";
4893
4894                } elsif ($diff->{'status'} eq "D") { # deleted
4895                        my $mode_chng = "<span class=\"file_status deleted\">[deleted $from_file_type]</span>";
4896                        print "<td>";
4897                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
4898                                                     hash_base=>$parent, file_name=>$diff->{'file'}),
4899                                       -class => "list"}, esc_path($diff->{'file'}));
4900                        print "</td>\n";
4901                        print "<td>$mode_chng</td>\n";
4902                        print "<td class=\"link\">";
4903                        if ($action eq 'commitdiff') {
4904                                # link to patch
4905                                $patchno++;
4906                                print $cgi->a({-href => href(-anchor=>"patch$patchno")},
4907                                              "patch") .
4908                                      " | ";
4909                        }
4910                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
4911                                                     hash_base=>$parent, file_name=>$diff->{'file'})},
4912                                      "blob") . " | ";
4913                        if ($have_blame) {
4914                                print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
4915                                                             file_name=>$diff->{'file'})},
4916                                              "blame") . " | ";
4917                        }
4918                        print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
4919                                                     file_name=>$diff->{'file'})},
4920                                      "history");
4921                        print "</td>\n";
4922
4923                } elsif ($diff->{'status'} eq "M" || $diff->{'status'} eq "T") { # modified, or type changed
4924                        my $mode_chnge = "";
4925                        if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
4926                                $mode_chnge = "<span class=\"file_status mode_chnge\">[changed";
4927                                if ($from_file_type ne $to_file_type) {
4928                                        $mode_chnge .= " from $from_file_type to $to_file_type";
4929                                }
4930                                if (($from_mode_oct & 0777) != ($to_mode_oct & 0777)) {
4931                                        if ($from_mode_str && $to_mode_str) {
4932                                                $mode_chnge .= " mode: $from_mode_str->$to_mode_str";
4933                                        } elsif ($to_mode_str) {
4934                                                $mode_chnge .= " mode: $to_mode_str";
4935                                        }
4936                                }
4937                                $mode_chnge .= "]</span>\n";
4938                        }
4939                        print "<td>";
4940                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
4941                                                     hash_base=>$hash, file_name=>$diff->{'file'}),
4942                                      -class => "list"}, esc_path($diff->{'file'}));
4943                        print "</td>\n";
4944                        print "<td>$mode_chnge</td>\n";
4945                        print "<td class=\"link\">";
4946                        if ($action eq 'commitdiff') {
4947                                # link to patch
4948                                $patchno++;
4949                                print $cgi->a({-href => href(-anchor=>"patch$patchno")},
4950                                              "patch") .
4951                                      " | ";
4952                        } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
4953                                # "commit" view and modified file (not onlu mode changed)
4954                                print $cgi->a({-href => href(action=>"blobdiff",
4955                                                             hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
4956                                                             hash_base=>$hash, hash_parent_base=>$parent,
4957                                                             file_name=>$diff->{'file'})},
4958                                              "diff") .
4959                                      " | ";
4960                        }
4961                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
4962                                                     hash_base=>$hash, file_name=>$diff->{'file'})},
4963                                       "blob") . " | ";
4964                        if ($have_blame) {
4965                                print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
4966                                                             file_name=>$diff->{'file'})},
4967                                              "blame") . " | ";
4968                        }
4969                        print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
4970                                                     file_name=>$diff->{'file'})},
4971                                      "history");
4972                        print "</td>\n";
4973
4974                } elsif ($diff->{'status'} eq "R" || $diff->{'status'} eq "C") { # renamed or copied
4975                        my %status_name = ('R' => 'moved', 'C' => 'copied');
4976                        my $nstatus = $status_name{$diff->{'status'}};
4977                        my $mode_chng = "";
4978                        if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
4979                                # mode also for directories, so we cannot use $to_mode_str
4980                                $mode_chng = sprintf(", mode: %04o", $to_mode_oct & 0777);
4981                        }
4982                        print "<td>" .
4983                              $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
4984                                                     hash=>$diff->{'to_id'}, file_name=>$diff->{'to_file'}),
4985                                      -class => "list"}, esc_path($diff->{'to_file'})) . "</td>\n" .
4986                              "<td><span class=\"file_status $nstatus\">[$nstatus from " .
4987                              $cgi->a({-href => href(action=>"blob", hash_base=>$parent,
4988                                                     hash=>$diff->{'from_id'}, file_name=>$diff->{'from_file'}),
4989                                      -class => "list"}, esc_path($diff->{'from_file'})) .
4990                              " with " . (int $diff->{'similarity'}) . "% similarity$mode_chng]</span></td>\n" .
4991                              "<td class=\"link\">";
4992                        if ($action eq 'commitdiff') {
4993                                # link to patch
4994                                $patchno++;
4995                                print $cgi->a({-href => href(-anchor=>"patch$patchno")},
4996                                              "patch") .
4997                                      " | ";
4998                        } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
4999                                # "commit" view and modified file (not only pure rename or copy)
5000                                print $cgi->a({-href => href(action=>"blobdiff",
5001                                                             hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
5002                                                             hash_base=>$hash, hash_parent_base=>$parent,
5003                                                             file_name=>$diff->{'to_file'}, file_parent=>$diff->{'from_file'})},
5004                                              "diff") .
5005                                      " | ";
5006                        }
5007                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
5008                                                     hash_base=>$parent, file_name=>$diff->{'to_file'})},
5009                                      "blob") . " | ";
5010                        if ($have_blame) {
5011                                print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
5012                                                             file_name=>$diff->{'to_file'})},
5013                                              "blame") . " | ";
5014                        }
5015                        print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
5016                                                    file_name=>$diff->{'to_file'})},
5017                                      "history");
5018                        print "</td>\n";
5019
5020                } # we should not encounter Unmerged (U) or Unknown (X) status
5021                print "</tr>\n";
5022        }
5023        print "</tbody>" if $has_header;
5024        print "</table>\n";
5025}
5026
5027# Print context lines and then rem/add lines in a side-by-side manner.
5028sub print_sidebyside_diff_lines {
5029        my ($ctx, $rem, $add) = @_;
5030
5031        # print context block before add/rem block
5032        if (@$ctx) {
5033                print join '',
5034                        '<div class="chunk_block ctx">',
5035                                '<div class="old">',
5036                                @$ctx,
5037                                '</div>',
5038                                '<div class="new">',
5039                                @$ctx,
5040                                '</div>',
5041                        '</div>';
5042        }
5043
5044        if (!@$add) {
5045                # pure removal
5046                print join '',
5047                        '<div class="chunk_block rem">',
5048                                '<div class="old">',
5049                                @$rem,
5050                                '</div>',
5051                        '</div>';
5052        } elsif (!@$rem) {
5053                # pure addition
5054                print join '',
5055                        '<div class="chunk_block add">',
5056                                '<div class="new">',
5057                                @$add,
5058                                '</div>',
5059                        '</div>';
5060        } else {
5061                print join '',
5062                        '<div class="chunk_block chg">',
5063                                '<div class="old">',
5064                                @$rem,
5065                                '</div>',
5066                                '<div class="new">',
5067                                @$add,
5068                                '</div>',
5069                        '</div>';
5070        }
5071}
5072
5073# Print context lines and then rem/add lines in inline manner.
5074sub print_inline_diff_lines {
5075        my ($ctx, $rem, $add) = @_;
5076
5077        print @$ctx, @$rem, @$add;
5078}
5079
5080# Format removed and added line, mark changed part and HTML-format them.
5081# Implementation is based on contrib/diff-highlight
5082sub format_rem_add_lines_pair {
5083        my ($rem, $add, $num_parents) = @_;
5084
5085        # We need to untabify lines before split()'ing them;
5086        # otherwise offsets would be invalid.
5087        chomp $rem;
5088        chomp $add;
5089        $rem = untabify($rem);
5090        $add = untabify($add);
5091
5092        my @rem = split(//, $rem);
5093        my @add = split(//, $add);
5094        my ($esc_rem, $esc_add);
5095        # Ignore leading +/- characters for each parent.
5096        my ($prefix_len, $suffix_len) = ($num_parents, 0);
5097        my ($prefix_has_nonspace, $suffix_has_nonspace);
5098
5099        my $shorter = (@rem < @add) ? @rem : @add;
5100        while ($prefix_len < $shorter) {
5101                last if ($rem[$prefix_len] ne $add[$prefix_len]);
5102
5103                $prefix_has_nonspace = 1 if ($rem[$prefix_len] !~ /\s/);
5104                $prefix_len++;
5105        }
5106
5107        while ($prefix_len + $suffix_len < $shorter) {
5108                last if ($rem[-1 - $suffix_len] ne $add[-1 - $suffix_len]);
5109
5110                $suffix_has_nonspace = 1 if ($rem[-1 - $suffix_len] !~ /\s/);
5111                $suffix_len++;
5112        }
5113
5114        # Mark lines that are different from each other, but have some common
5115        # part that isn't whitespace.  If lines are completely different, don't
5116        # mark them because that would make output unreadable, especially if
5117        # diff consists of multiple lines.
5118        if ($prefix_has_nonspace || $suffix_has_nonspace) {
5119                $esc_rem = esc_html_hl_regions($rem, 'marked',
5120                        [$prefix_len, @rem - $suffix_len], -nbsp=>1);
5121                $esc_add = esc_html_hl_regions($add, 'marked',
5122                        [$prefix_len, @add - $suffix_len], -nbsp=>1);
5123        } else {
5124                $esc_rem = esc_html($rem, -nbsp=>1);
5125                $esc_add = esc_html($add, -nbsp=>1);
5126        }
5127
5128        return format_diff_line(\$esc_rem, 'rem'),
5129               format_diff_line(\$esc_add, 'add');
5130}
5131
5132# HTML-format diff context, removed and added lines.
5133sub format_ctx_rem_add_lines {
5134        my ($ctx, $rem, $add, $num_parents) = @_;
5135        my (@new_ctx, @new_rem, @new_add);
5136        my $can_highlight = 0;
5137        my $is_combined = ($num_parents > 1);
5138
5139        # Highlight if every removed line has a corresponding added line.
5140        if (@$add > 0 && @$add == @$rem) {
5141                $can_highlight = 1;
5142
5143                # Highlight lines in combined diff only if the chunk contains
5144                # diff between the same version, e.g.
5145                #
5146                #    - a
5147                #   -  b
5148                #    + c
5149                #   +  d
5150                #
5151                # Otherwise the highlightling would be confusing.
5152                if ($is_combined) {
5153                        for (my $i = 0; $i < @$add; $i++) {
5154                                my $prefix_rem = substr($rem->[$i], 0, $num_parents);
5155                                my $prefix_add = substr($add->[$i], 0, $num_parents);
5156
5157                                $prefix_rem =~ s/-/+/g;
5158
5159                                if ($prefix_rem ne $prefix_add) {
5160                                        $can_highlight = 0;
5161                                        last;
5162                                }
5163                        }
5164                }
5165        }
5166
5167        if ($can_highlight) {
5168                for (my $i = 0; $i < @$add; $i++) {
5169                        my ($line_rem, $line_add) = format_rem_add_lines_pair(
5170                                $rem->[$i], $add->[$i], $num_parents);
5171                        push @new_rem, $line_rem;
5172                        push @new_add, $line_add;
5173                }
5174        } else {
5175                @new_rem = map { format_diff_line($_, 'rem') } @$rem;
5176                @new_add = map { format_diff_line($_, 'add') } @$add;
5177        }
5178
5179        @new_ctx = map { format_diff_line($_, 'ctx') } @$ctx;
5180
5181        return (\@new_ctx, \@new_rem, \@new_add);
5182}
5183
5184# Print context lines and then rem/add lines.
5185sub print_diff_lines {
5186        my ($ctx, $rem, $add, $diff_style, $num_parents) = @_;
5187        my $is_combined = $num_parents > 1;
5188
5189        ($ctx, $rem, $add) = format_ctx_rem_add_lines($ctx, $rem, $add,
5190                $num_parents);
5191
5192        if ($diff_style eq 'sidebyside' && !$is_combined) {
5193                print_sidebyside_diff_lines($ctx, $rem, $add);
5194        } else {
5195                # default 'inline' style and unknown styles
5196                print_inline_diff_lines($ctx, $rem, $add);
5197        }
5198}
5199
5200sub print_diff_chunk {
5201        my ($diff_style, $num_parents, $from, $to, @chunk) = @_;
5202        my (@ctx, @rem, @add);
5203
5204        # The class of the previous line.
5205        my $prev_class = '';
5206
5207        return unless @chunk;
5208
5209        # incomplete last line might be among removed or added lines,
5210        # or both, or among context lines: find which
5211        for (my $i = 1; $i < @chunk; $i++) {
5212                if ($chunk[$i][0] eq 'incomplete') {
5213                        $chunk[$i][0] = $chunk[$i-1][0];
5214                }
5215        }
5216
5217        # guardian
5218        push @chunk, ["", ""];
5219
5220        foreach my $line_info (@chunk) {
5221                my ($class, $line) = @$line_info;
5222
5223                # print chunk headers
5224                if ($class && $class eq 'chunk_header') {
5225                        print format_diff_line($line, $class, $from, $to);
5226                        next;
5227                }
5228
5229                ## print from accumulator when have some add/rem lines or end
5230                # of chunk (flush context lines), or when have add and rem
5231                # lines and new block is reached (otherwise add/rem lines could
5232                # be reordered)
5233                if (!$class || ((@rem || @add) && $class eq 'ctx') ||
5234                    (@rem && @add && $class ne $prev_class)) {
5235                        print_diff_lines(\@ctx, \@rem, \@add,
5236                                         $diff_style, $num_parents);
5237                        @ctx = @rem = @add = ();
5238                }
5239
5240                ## adding lines to accumulator
5241                # guardian value
5242                last unless $line;
5243                # rem, add or change
5244                if ($class eq 'rem') {
5245                        push @rem, $line;
5246                } elsif ($class eq 'add') {
5247                        push @add, $line;
5248                }
5249                # context line
5250                if ($class eq 'ctx') {
5251                        push @ctx, $line;
5252                }
5253
5254                $prev_class = $class;
5255        }
5256}
5257
5258sub git_patchset_body {
5259        my ($fd, $diff_style, $difftree, $hash, @hash_parents) = @_;
5260        my ($hash_parent) = $hash_parents[0];
5261
5262        my $is_combined = (@hash_parents > 1);
5263        my $patch_idx = 0;
5264        my $patch_number = 0;
5265        my $patch_line;
5266        my $diffinfo;
5267        my $to_name;
5268        my (%from, %to);
5269        my @chunk; # for side-by-side diff
5270
5271        print "<div class=\"patchset\">\n";
5272
5273        # skip to first patch
5274        while ($patch_line = <$fd>) {
5275                chomp $patch_line;
5276
5277                last if ($patch_line =~ m/^diff /);
5278        }
5279
5280 PATCH:
5281        while ($patch_line) {
5282
5283                # parse "git diff" header line
5284                if ($patch_line =~ m/^diff --git (\"(?:[^\\\"]*(?:\\.[^\\\"]*)*)\"|[^ "]*) (.*)$/) {
5285                        # $1 is from_name, which we do not use
5286                        $to_name = unquote($2);
5287                        $to_name =~ s!^b/!!;
5288                } elsif ($patch_line =~ m/^diff --(cc|combined) ("?.*"?)$/) {
5289                        # $1 is 'cc' or 'combined', which we do not use
5290                        $to_name = unquote($2);
5291                } else {
5292                        $to_name = undef;
5293                }
5294
5295                # check if current patch belong to current raw line
5296                # and parse raw git-diff line if needed
5297                if (is_patch_split($diffinfo, { 'to_file' => $to_name })) {
5298                        # this is continuation of a split patch
5299                        print "<div class=\"patch cont\">\n";
5300                } else {
5301                        # advance raw git-diff output if needed
5302                        $patch_idx++ if defined $diffinfo;
5303
5304                        # read and prepare patch information
5305                        $diffinfo = parsed_difftree_line($difftree->[$patch_idx]);
5306
5307                        # compact combined diff output can have some patches skipped
5308                        # find which patch (using pathname of result) we are at now;
5309                        if ($is_combined) {
5310                                while ($to_name ne $diffinfo->{'to_file'}) {
5311                                        print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n" .
5312                                              format_diff_cc_simplified($diffinfo, @hash_parents) .
5313                                              "</div>\n";  # class="patch"
5314
5315                                        $patch_idx++;
5316                                        $patch_number++;
5317
5318                                        last if $patch_idx > $#$difftree;
5319                                        $diffinfo = parsed_difftree_line($difftree->[$patch_idx]);
5320                                }
5321                        }
5322
5323                        # modifies %from, %to hashes
5324                        parse_from_to_diffinfo($diffinfo, \%from, \%to, @hash_parents);
5325
5326                        # this is first patch for raw difftree line with $patch_idx index
5327                        # we index @$difftree array from 0, but number patches from 1
5328                        print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n";
5329                }
5330
5331                # git diff header
5332                #assert($patch_line =~ m/^diff /) if DEBUG;
5333                #assert($patch_line !~ m!$/$!) if DEBUG; # is chomp-ed
5334                $patch_number++;
5335                # print "git diff" header
5336                print format_git_diff_header_line($patch_line, $diffinfo,
5337                                                  \%from, \%to);
5338
5339                # print extended diff header
5340                print "<div class=\"diff extended_header\">\n";
5341        EXTENDED_HEADER:
5342                while ($patch_line = <$fd>) {
5343                        chomp $patch_line;
5344
5345                        last EXTENDED_HEADER if ($patch_line =~ m/^--- |^diff /);
5346
5347                        print format_extended_diff_header_line($patch_line, $diffinfo,
5348                                                               \%from, \%to);
5349                }
5350                print "</div>\n"; # class="diff extended_header"
5351
5352                # from-file/to-file diff header
5353                if (! $patch_line) {
5354                        print "</div>\n"; # class="patch"
5355                        last PATCH;
5356                }
5357                next PATCH if ($patch_line =~ m/^diff /);
5358                #assert($patch_line =~ m/^---/) if DEBUG;
5359
5360                my $last_patch_line = $patch_line;
5361                $patch_line = <$fd>;
5362                chomp $patch_line;
5363                #assert($patch_line =~ m/^\+\+\+/) if DEBUG;
5364
5365                print format_diff_from_to_header($last_patch_line, $patch_line,
5366                                                 $diffinfo, \%from, \%to,
5367                                                 @hash_parents);
5368
5369                # the patch itself
5370        LINE:
5371                while ($patch_line = <$fd>) {
5372                        chomp $patch_line;
5373
5374                        next PATCH if ($patch_line =~ m/^diff /);
5375
5376                        my $class = diff_line_class($patch_line, \%from, \%to);
5377
5378                        if ($class eq 'chunk_header') {
5379                                print_diff_chunk($diff_style, scalar @hash_parents, \%from, \%to, @chunk);
5380                                @chunk = ();
5381                        }
5382
5383                        push @chunk, [ $class, $patch_line ];
5384                }
5385
5386        } continue {
5387                if (@chunk) {
5388                        print_diff_chunk($diff_style, scalar @hash_parents, \%from, \%to, @chunk);
5389                        @chunk = ();
5390                }
5391                print "</div>\n"; # class="patch"
5392        }
5393
5394        # for compact combined (--cc) format, with chunk and patch simplification
5395        # the patchset might be empty, but there might be unprocessed raw lines
5396        for (++$patch_idx if $patch_number > 0;
5397             $patch_idx < @$difftree;
5398             ++$patch_idx) {
5399                # read and prepare patch information
5400                $diffinfo = parsed_difftree_line($difftree->[$patch_idx]);
5401
5402                # generate anchor for "patch" links in difftree / whatchanged part
5403                print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n" .
5404                      format_diff_cc_simplified($diffinfo, @hash_parents) .
5405                      "</div>\n";  # class="patch"
5406
5407                $patch_number++;
5408        }
5409
5410        if ($patch_number == 0) {
5411                if (@hash_parents > 1) {
5412                        print "<div class=\"diff nodifferences\">Trivial merge</div>\n";
5413                } else {
5414                        print "<div class=\"diff nodifferences\">No differences found</div>\n";
5415                }
5416        }
5417
5418        print "</div>\n"; # class="patchset"
5419}
5420
5421# . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5422
5423sub git_project_search_form {
5424        my ($searchtext, $search_use_regexp) = @_;
5425
5426        my $limit = '';
5427        if ($project_filter) {
5428                $limit = " in '$project_filter/'";
5429        }
5430
5431        print "<div class=\"projsearch\">\n";
5432        print $cgi->startform(-method => 'get', -action => $my_uri) .
5433              $cgi->hidden(-name => 'a', -value => 'project_list')  . "\n";
5434        print $cgi->hidden(-name => 'pf', -value => $project_filter). "\n"
5435                if (defined $project_filter);
5436        print $cgi->textfield(-name => 's', -value => $searchtext,
5437                              -title => "Search project by name and description$limit",
5438                              -size => 60) . "\n" .
5439              "<span title=\"Extended regular expression\">" .
5440              $cgi->checkbox(-name => 'sr', -value => 1, -label => 're',
5441                             -checked => $search_use_regexp) .
5442              "</span>\n" .
5443              $cgi->submit(-name => 'btnS', -value => 'Search') .
5444              $cgi->end_form() . "\n" .
5445              $cgi->a({-href => href(project => undef, searchtext => undef,
5446                                     project_filter => $project_filter)},
5447                      esc_html("List all projects$limit")) . "<br />\n";
5448        print "</div>\n";
5449}
5450
5451# entry for given @keys needs filling if at least one of keys in list
5452# is not present in %$project_info
5453sub project_info_needs_filling {
5454        my ($project_info, @keys) = @_;
5455
5456        # return List::MoreUtils::any { !exists $project_info->{$_} } @keys;
5457        foreach my $key (@keys) {
5458                if (!exists $project_info->{$key}) {
5459                        return 1;
5460                }
5461        }
5462        return;
5463}
5464
5465# fills project list info (age, description, owner, category, forks, etc.)
5466# for each project in the list, removing invalid projects from
5467# returned list, or fill only specified info.
5468#
5469# Invalid projects are removed from the returned list if and only if you
5470# ask 'age' or 'age_string' to be filled, because they are the only fields
5471# that run unconditionally git command that requires repository, and
5472# therefore do always check if project repository is invalid.
5473#
5474# USAGE:
5475# * fill_project_list_info(\@project_list, 'descr_long', 'ctags')
5476#   ensures that 'descr_long' and 'ctags' fields are filled
5477# * @project_list = fill_project_list_info(\@project_list)
5478#   ensures that all fields are filled (and invalid projects removed)
5479#
5480# NOTE: modifies $projlist, but does not remove entries from it
5481sub fill_project_list_info {
5482        my ($projlist, @wanted_keys) = @_;
5483        my @projects;
5484        my $filter_set = sub { return @_; };
5485        if (@wanted_keys) {
5486                my %wanted_keys = map { $_ => 1 } @wanted_keys;
5487                $filter_set = sub { return grep { $wanted_keys{$_} } @_; };
5488        }
5489
5490        my $show_ctags = gitweb_check_feature('ctags');
5491 PROJECT:
5492        foreach my $pr (@$projlist) {
5493                if (project_info_needs_filling($pr, $filter_set->('age', 'age_string'))) {
5494                        my (@activity) = git_get_last_activity($pr->{'path'});
5495                        unless (@activity) {
5496                                next PROJECT;
5497                        }
5498                        ($pr->{'age'}, $pr->{'age_string'}) = @activity;
5499                }
5500                if (project_info_needs_filling($pr, $filter_set->('descr', 'descr_long'))) {
5501                        my $descr = git_get_project_description($pr->{'path'}) || "";
5502                        $descr = to_utf8($descr);
5503                        $pr->{'descr_long'} = $descr;
5504                        $pr->{'descr'} = chop_str($descr, $projects_list_description_width, 5);
5505                }
5506                if (project_info_needs_filling($pr, $filter_set->('owner'))) {
5507                        $pr->{'owner'} = git_get_project_owner("$pr->{'path'}") || "";
5508                }
5509                if ($show_ctags &&
5510                    project_info_needs_filling($pr, $filter_set->('ctags'))) {
5511                        $pr->{'ctags'} = git_get_project_ctags($pr->{'path'});
5512                }
5513                if ($projects_list_group_categories &&
5514                    project_info_needs_filling($pr, $filter_set->('category'))) {
5515                        my $cat = git_get_project_category($pr->{'path'}) ||
5516                                                           $project_list_default_category;
5517                        $pr->{'category'} = to_utf8($cat);
5518                }
5519
5520                push @projects, $pr;
5521        }
5522
5523        return @projects;
5524}
5525
5526sub sort_projects_list {
5527        my ($projlist, $order) = @_;
5528
5529        sub order_str {
5530                my $key = shift;
5531                return sub { $a->{$key} cmp $b->{$key} };
5532        }
5533
5534        sub order_num_then_undef {
5535                my $key = shift;
5536                return sub {
5537                        defined $a->{$key} ?
5538                                (defined $b->{$key} ? $a->{$key} <=> $b->{$key} : -1) :
5539                                (defined $b->{$key} ? 1 : 0)
5540                };
5541        }
5542
5543        my %orderings = (
5544                project => order_str('path'),
5545                descr => order_str('descr_long'),
5546                owner => order_str('owner'),
5547                age => order_num_then_undef('age'),
5548        );
5549
5550        my $ordering = $orderings{$order};
5551        return defined $ordering ? sort $ordering @$projlist : @$projlist;
5552}
5553
5554# returns a hash of categories, containing the list of project
5555# belonging to each category
5556sub build_projlist_by_category {
5557        my ($projlist, $from, $to) = @_;
5558        my %categories;
5559
5560        $from = 0 unless defined $from;
5561        $to = $#$projlist if (!defined $to || $#$projlist < $to);
5562
5563        for (my $i = $from; $i <= $to; $i++) {
5564                my $pr = $projlist->[$i];
5565                push @{$categories{ $pr->{'category'} }}, $pr;
5566        }
5567
5568        return wantarray ? %categories : \%categories;
5569}
5570
5571# print 'sort by' <th> element, generating 'sort by $name' replay link
5572# if that order is not selected
5573sub print_sort_th {
5574        print format_sort_th(@_);
5575}
5576
5577sub format_sort_th {
5578        my ($name, $order, $header) = @_;
5579        my $sort_th = "";
5580        $header ||= ucfirst($name);
5581
5582        if ($order eq $name) {
5583                $sort_th .= "<th>$header</th>\n";
5584        } else {
5585                $sort_th .= "<th>" .
5586                            $cgi->a({-href => href(-replay=>1, order=>$name),
5587                                     -class => "header"}, $header) .
5588                            "</th>\n";
5589        }
5590
5591        return $sort_th;
5592}
5593
5594sub git_project_list_rows {
5595        my ($projlist, $from, $to, $check_forks) = @_;
5596
5597        $from = 0 unless defined $from;
5598        $to = $#$projlist if (!defined $to || $#$projlist < $to);
5599
5600        my $alternate = 1;
5601        for (my $i = $from; $i <= $to; $i++) {
5602                my $pr = $projlist->[$i];
5603
5604                if ($alternate) {
5605                        print "<tr class=\"dark\">\n";
5606                } else {
5607                        print "<tr class=\"light\">\n";
5608                }
5609                $alternate ^= 1;
5610
5611                if ($check_forks) {
5612                        print "<td>";
5613                        if ($pr->{'forks'}) {
5614                                my $nforks = scalar @{$pr->{'forks'}};
5615                                if ($nforks > 0) {
5616                                        print $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks"),
5617                                                       -title => "$nforks forks"}, "+");
5618                                } else {
5619                                        print $cgi->span({-title => "$nforks forks"}, "+");
5620                                }
5621                        }
5622                        print "</td>\n";
5623                }
5624                print "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
5625                                        -class => "list"},
5626                                       esc_html_match_hl($pr->{'path'}, $search_regexp)) .
5627                      "</td>\n" .
5628                      "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
5629                                        -class => "list",
5630                                        -title => $pr->{'descr_long'}},
5631                                        $search_regexp
5632                                        ? esc_html_match_hl_chopped($pr->{'descr_long'},
5633                                                                    $pr->{'descr'}, $search_regexp)
5634                                        : esc_html($pr->{'descr'})) .
5635                      "</td>\n";
5636                unless ($omit_owner) {
5637                        print "<td><i>" . chop_and_escape_str($pr->{'owner'}, 15) . "</i></td>\n";
5638                }
5639                unless ($omit_age_column) {
5640                        print "<td class=\"". age_class($pr->{'age'}) . "\">" .
5641                            (defined $pr->{'age_string'} ? $pr->{'age_string'} : "No commits") . "</td>\n";
5642                }
5643                print"<td class=\"link\">" .
5644                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
5645                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"shortlog")}, "shortlog") . " | " .
5646                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") . " | " .
5647                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"tree")}, "tree") .
5648                      ($pr->{'forks'} ? " | " . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "forks") : '') .
5649                      "</td>\n" .
5650                      "</tr>\n";
5651        }
5652}
5653
5654sub git_project_list_body {
5655        # actually uses global variable $project
5656        my ($projlist, $order, $from, $to, $extra, $no_header) = @_;
5657        my @projects = @$projlist;
5658
5659        my $check_forks = gitweb_check_feature('forks');
5660        my $show_ctags  = gitweb_check_feature('ctags');
5661        my $tagfilter = $show_ctags ? $input_params{'ctag'} : undef;
5662        $check_forks = undef
5663                if ($tagfilter || $search_regexp);
5664
5665        # filtering out forks before filling info allows to do less work
5666        @projects = filter_forks_from_projects_list(\@projects)
5667                if ($check_forks);
5668        # search_projects_list pre-fills required info
5669        @projects = search_projects_list(\@projects,
5670                                         'search_regexp' => $search_regexp,
5671                                         'tagfilter'  => $tagfilter)
5672                if ($tagfilter || $search_regexp);
5673        # fill the rest
5674        my @all_fields = ('descr', 'descr_long', 'ctags', 'category');
5675        push @all_fields, ('age', 'age_string') unless($omit_age_column);
5676        push @all_fields, 'owner' unless($omit_owner);
5677        @projects = fill_project_list_info(\@projects, @all_fields);
5678
5679        $order ||= $default_projects_order;
5680        $from = 0 unless defined $from;
5681        $to = $#projects if (!defined $to || $#projects < $to);
5682
5683        # short circuit
5684        if ($from > $to) {
5685                print "<center>\n".
5686                      "<b>No such projects found</b><br />\n".
5687                      "Click ".$cgi->a({-href=>href(project=>undef)},"here")." to view all projects<br />\n".
5688                      "</center>\n<br />\n";
5689                return;
5690        }
5691
5692        @projects = sort_projects_list(\@projects, $order);
5693
5694        if ($show_ctags) {
5695                my $ctags = git_gather_all_ctags(\@projects);
5696                my $cloud = git_populate_project_tagcloud($ctags);
5697                print git_show_project_tagcloud($cloud, 64);
5698        }
5699
5700        print "<table class=\"project_list\">\n";
5701        unless ($no_header) {
5702                print "<tr>\n";
5703                if ($check_forks) {
5704                        print "<th></th>\n";
5705                }
5706                print_sort_th('project', $order, 'Project');
5707                print_sort_th('descr', $order, 'Description');
5708                print_sort_th('owner', $order, 'Owner') unless $omit_owner;
5709                print_sort_th('age', $order, 'Last Change') unless $omit_age_column;
5710                print "<th></th>\n" . # for links
5711                      "</tr>\n";
5712        }
5713
5714        if ($projects_list_group_categories) {
5715                # only display categories with projects in the $from-$to window
5716                @projects = sort {$a->{'category'} cmp $b->{'category'}} @projects[$from..$to];
5717                my %categories = build_projlist_by_category(\@projects, $from, $to);
5718                foreach my $cat (sort keys %categories) {
5719                        unless ($cat eq "") {
5720                                print "<tr>\n";
5721                                if ($check_forks) {
5722                                        print "<td></td>\n";
5723                                }
5724                                print "<td class=\"category\" colspan=\"5\">".esc_html($cat)."</td>\n";
5725                                print "</tr>\n";
5726                        }
5727
5728                        git_project_list_rows($categories{$cat}, undef, undef, $check_forks);
5729                }
5730        } else {
5731                git_project_list_rows(\@projects, $from, $to, $check_forks);
5732        }
5733
5734        if (defined $extra) {
5735                print "<tr>\n";
5736                if ($check_forks) {
5737                        print "<td></td>\n";
5738                }
5739                print "<td colspan=\"5\">$extra</td>\n" .
5740                      "</tr>\n";
5741        }
5742        print "</table>\n";
5743}
5744
5745sub git_log_body {
5746        # uses global variable $project
5747        my ($commitlist, $from, $to, $refs, $extra) = @_;
5748
5749        $from = 0 unless defined $from;
5750        $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
5751
5752        for (my $i = 0; $i <= $to; $i++) {
5753                my %co = %{$commitlist->[$i]};
5754                next if !%co;
5755                my $commit = $co{'id'};
5756                my $ref = format_ref_marker($refs, $commit);
5757                git_print_header_div('commit',
5758                               "<span class=\"age\">$co{'age_string'}</span>" .
5759                               esc_html($co{'title'}) . $ref,
5760                               $commit);
5761                print "<div class=\"title_text\">\n" .
5762                      "<div class=\"log_link\">\n" .
5763                      $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
5764                      " | " .
5765                      $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
5766                      " | " .
5767                      $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree") .
5768                      "<br/>\n" .
5769                      "</div>\n";
5770                      git_print_authorship(\%co, -tag => 'span');
5771                      print "<br/>\n</div>\n";
5772
5773                print "<div class=\"log_body\">\n";
5774                git_print_log($co{'comment'}, -final_empty_line=> 1);
5775                print "</div>\n";
5776        }
5777        if ($extra) {
5778                print "<div class=\"page_nav\">\n";
5779                print "$extra\n";
5780                print "</div>\n";
5781        }
5782}
5783
5784sub git_shortlog_body {
5785        # uses global variable $project
5786        my ($commitlist, $from, $to, $refs, $extra) = @_;
5787
5788        $from = 0 unless defined $from;
5789        $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
5790
5791        print "<table class=\"shortlog\">\n";
5792        my $alternate = 1;
5793        for (my $i = $from; $i <= $to; $i++) {
5794                my %co = %{$commitlist->[$i]};
5795                my $commit = $co{'id'};
5796                my $ref = format_ref_marker($refs, $commit);
5797                if ($alternate) {
5798                        print "<tr class=\"dark\">\n";
5799                } else {
5800                        print "<tr class=\"light\">\n";
5801                }
5802                $alternate ^= 1;
5803                # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
5804                print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
5805                      format_author_html('td', \%co, 10) . "<td>";
5806                print format_subject_html($co{'title'}, $co{'title_short'},
5807                                          href(action=>"commit", hash=>$commit), $ref);
5808                print "</td>\n" .
5809                      "<td class=\"link\">" .
5810                      $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
5811                      $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
5812                      $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree");
5813                my $snapshot_links = format_snapshot_links($commit);
5814                if (defined $snapshot_links) {
5815                        print " | " . $snapshot_links;
5816                }
5817                print "</td>\n" .
5818                      "</tr>\n";
5819        }
5820        if (defined $extra) {
5821                print "<tr>\n" .
5822                      "<td colspan=\"4\">$extra</td>\n" .
5823                      "</tr>\n";
5824        }
5825        print "</table>\n";
5826}
5827
5828sub git_history_body {
5829        # Warning: assumes constant type (blob or tree) during history
5830        my ($commitlist, $from, $to, $refs, $extra,
5831            $file_name, $file_hash, $ftype) = @_;
5832
5833        $from = 0 unless defined $from;
5834        $to = $#{$commitlist} unless (defined $to && $to <= $#{$commitlist});
5835
5836        print "<table class=\"history\">\n";
5837        my $alternate = 1;
5838        for (my $i = $from; $i <= $to; $i++) {
5839                my %co = %{$commitlist->[$i]};
5840                if (!%co) {
5841                        next;
5842                }
5843                my $commit = $co{'id'};
5844
5845                my $ref = format_ref_marker($refs, $commit);
5846
5847                if ($alternate) {
5848                        print "<tr class=\"dark\">\n";
5849                } else {
5850                        print "<tr class=\"light\">\n";
5851                }
5852                $alternate ^= 1;
5853                print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
5854        # shortlog:   format_author_html('td', \%co, 10)
5855                      format_author_html('td', \%co, 15, 3) . "<td>";
5856                # originally git_history used chop_str($co{'title'}, 50)
5857                print format_subject_html($co{'title'}, $co{'title_short'},
5858                                          href(action=>"commit", hash=>$commit), $ref);
5859                print "</td>\n" .
5860                      "<td class=\"link\">" .
5861                      $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype) . " | " .
5862                      $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
5863
5864                if ($ftype eq 'blob') {
5865                        my $blob_current = $file_hash;
5866                        my $blob_parent  = git_get_hash_by_path($commit, $file_name);
5867                        if (defined $blob_current && defined $blob_parent &&
5868                                        $blob_current ne $blob_parent) {
5869                                print " | " .
5870                                        $cgi->a({-href => href(action=>"blobdiff",
5871                                                               hash=>$blob_current, hash_parent=>$blob_parent,
5872                                                               hash_base=>$hash_base, hash_parent_base=>$commit,
5873                                                               file_name=>$file_name)},
5874                                                "diff to current");
5875                        }
5876                }
5877                print "</td>\n" .
5878                      "</tr>\n";
5879        }
5880        if (defined $extra) {
5881                print "<tr>\n" .
5882                      "<td colspan=\"4\">$extra</td>\n" .
5883                      "</tr>\n";
5884        }
5885        print "</table>\n";
5886}
5887
5888sub git_tags_body {
5889        # uses global variable $project
5890        my ($taglist, $from, $to, $extra) = @_;
5891        $from = 0 unless defined $from;
5892        $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
5893
5894        print "<table class=\"tags\">\n";
5895        my $alternate = 1;
5896        for (my $i = $from; $i <= $to; $i++) {
5897                my $entry = $taglist->[$i];
5898                my %tag = %$entry;
5899                my $comment = $tag{'subject'};
5900                my $comment_short;
5901                if (defined $comment) {
5902                        $comment_short = chop_str($comment, 30, 5);
5903                }
5904                if ($alternate) {
5905                        print "<tr class=\"dark\">\n";
5906                } else {
5907                        print "<tr class=\"light\">\n";
5908                }
5909                $alternate ^= 1;
5910                if (defined $tag{'age'}) {
5911                        print "<td><i>$tag{'age'}</i></td>\n";
5912                } else {
5913                        print "<td></td>\n";
5914                }
5915                print "<td>" .
5916                      $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
5917                               -class => "list name"}, esc_html($tag{'name'})) .
5918                      "</td>\n" .
5919                      "<td>";
5920                if (defined $comment) {
5921                        print format_subject_html($comment, $comment_short,
5922                                                  href(action=>"tag", hash=>$tag{'id'}));
5923                }
5924                print "</td>\n" .
5925                      "<td class=\"selflink\">";
5926                if ($tag{'type'} eq "tag") {
5927                        print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
5928                } else {
5929                        print "&nbsp;";
5930                }
5931                print "</td>\n" .
5932                      "<td class=\"link\">" . " | " .
5933                      $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
5934                if ($tag{'reftype'} eq "commit") {
5935                        print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'fullname'})}, "shortlog") .
5936                              " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'fullname'})}, "log");
5937                } elsif ($tag{'reftype'} eq "blob") {
5938                        print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
5939                }
5940                print "</td>\n" .
5941                      "</tr>";
5942        }
5943        if (defined $extra) {
5944                print "<tr>\n" .
5945                      "<td colspan=\"5\">$extra</td>\n" .
5946                      "</tr>\n";
5947        }
5948        print "</table>\n";
5949}
5950
5951sub git_heads_body {
5952        # uses global variable $project
5953        my ($headlist, $head_at, $from, $to, $extra) = @_;
5954        $from = 0 unless defined $from;
5955        $to = $#{$headlist} if (!defined $to || $#{$headlist} < $to);
5956
5957        print "<table class=\"heads\">\n";
5958        my $alternate = 1;
5959        for (my $i = $from; $i <= $to; $i++) {
5960                my $entry = $headlist->[$i];
5961                my %ref = %$entry;
5962                my $curr = defined $head_at && $ref{'id'} eq $head_at;
5963                if ($alternate) {
5964                        print "<tr class=\"dark\">\n";
5965                } else {
5966                        print "<tr class=\"light\">\n";
5967                }
5968                $alternate ^= 1;
5969                print "<td><i>$ref{'age'}</i></td>\n" .
5970                      ($curr ? "<td class=\"current_head\">" : "<td>") .
5971                      $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'fullname'}),
5972                               -class => "list name"},esc_html($ref{'name'})) .
5973                      "</td>\n" .
5974                      "<td class=\"link\">" .
5975                      $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'fullname'})}, "shortlog") . " | " .
5976                      $cgi->a({-href => href(action=>"log", hash=>$ref{'fullname'})}, "log") . " | " .
5977                      $cgi->a({-href => href(action=>"tree", hash=>$ref{'fullname'}, hash_base=>$ref{'fullname'})}, "tree") .
5978                      "</td>\n" .
5979                      "</tr>";
5980        }
5981        if (defined $extra) {
5982                print "<tr>\n" .
5983                      "<td colspan=\"3\">$extra</td>\n" .
5984                      "</tr>\n";
5985        }
5986        print "</table>\n";
5987}
5988
5989# Display a single remote block
5990sub git_remote_block {
5991        my ($remote, $rdata, $limit, $head) = @_;
5992
5993        my $heads = $rdata->{'heads'};
5994        my $fetch = $rdata->{'fetch'};
5995        my $push = $rdata->{'push'};
5996
5997        my $urls_table = "<table class=\"projects_list\">\n" ;
5998
5999        if (defined $fetch) {
6000                if ($fetch eq $push) {
6001                        $urls_table .= format_repo_url("URL", $fetch);
6002                } else {
6003                        $urls_table .= format_repo_url("Fetch URL", $fetch);
6004                        $urls_table .= format_repo_url("Push URL", $push) if defined $push;
6005                }
6006        } elsif (defined $push) {
6007                $urls_table .= format_repo_url("Push URL", $push);
6008        } else {
6009                $urls_table .= format_repo_url("", "No remote URL");
6010        }
6011
6012        $urls_table .= "</table>\n";
6013
6014        my $dots;
6015        if (defined $limit && $limit < @$heads) {
6016                $dots = $cgi->a({-href => href(action=>"remotes", hash=>$remote)}, "...");
6017        }
6018
6019        print $urls_table;
6020        git_heads_body($heads, $head, 0, $limit, $dots);
6021}
6022
6023# Display a list of remote names with the respective fetch and push URLs
6024sub git_remotes_list {
6025        my ($remotedata, $limit) = @_;
6026        print "<table class=\"heads\">\n";
6027        my $alternate = 1;
6028        my @remotes = sort keys %$remotedata;
6029
6030        my $limited = $limit && $limit < @remotes;
6031
6032        $#remotes = $limit - 1 if $limited;
6033
6034        while (my $remote = shift @remotes) {
6035                my $rdata = $remotedata->{$remote};
6036                my $fetch = $rdata->{'fetch'};
6037                my $push = $rdata->{'push'};
6038                if ($alternate) {
6039                        print "<tr class=\"dark\">\n";
6040                } else {
6041                        print "<tr class=\"light\">\n";
6042                }
6043                $alternate ^= 1;
6044                print "<td>" .
6045                      $cgi->a({-href=> href(action=>'remotes', hash=>$remote),
6046                               -class=> "list name"},esc_html($remote)) .
6047                      "</td>";
6048                print "<td class=\"link\">" .
6049                      (defined $fetch ? $cgi->a({-href=> $fetch}, "fetch") : "fetch") .
6050                      " | " .
6051                      (defined $push ? $cgi->a({-href=> $push}, "push") : "push") .
6052                      "</td>";
6053
6054                print "</tr>\n";
6055        }
6056
6057        if ($limited) {
6058                print "<tr>\n" .
6059                      "<td colspan=\"3\">" .
6060                      $cgi->a({-href => href(action=>"remotes")}, "...") .
6061                      "</td>\n" . "</tr>\n";
6062        }
6063
6064        print "</table>";
6065}
6066
6067# Display remote heads grouped by remote, unless there are too many
6068# remotes, in which case we only display the remote names
6069sub git_remotes_body {
6070        my ($remotedata, $limit, $head) = @_;
6071        if ($limit and $limit < keys %$remotedata) {
6072                git_remotes_list($remotedata, $limit);
6073        } else {
6074                fill_remote_heads($remotedata);
6075                while (my ($remote, $rdata) = each %$remotedata) {
6076                        git_print_section({-class=>"remote", -id=>$remote},
6077                                ["remotes", $remote, $remote], sub {
6078                                        git_remote_block($remote, $rdata, $limit, $head);
6079                                });
6080                }
6081        }
6082}
6083
6084sub git_search_message {
6085        my %co = @_;
6086
6087        my $greptype;
6088        if ($searchtype eq 'commit') {
6089                $greptype = "--grep=";
6090        } elsif ($searchtype eq 'author') {
6091                $greptype = "--author=";
6092        } elsif ($searchtype eq 'committer') {
6093                $greptype = "--committer=";
6094        }
6095        $greptype .= $searchtext;
6096        my @commitlist = parse_commits($hash, 101, (100 * $page), undef,
6097                                       $greptype, '--regexp-ignore-case',
6098                                       $search_use_regexp ? '--extended-regexp' : '--fixed-strings');
6099
6100        my $paging_nav = '';
6101        if ($page > 0) {
6102                $paging_nav .=
6103                        $cgi->a({-href => href(-replay=>1, page=>undef)},
6104                                "first") .
6105                        " &sdot; " .
6106                        $cgi->a({-href => href(-replay=>1, page=>$page-1),
6107                                 -accesskey => "p", -title => "Alt-p"}, "prev");
6108        } else {
6109                $paging_nav .= "first &sdot; prev";
6110        }
6111        my $next_link = '';
6112        if ($#commitlist >= 100) {
6113                $next_link =
6114                        $cgi->a({-href => href(-replay=>1, page=>$page+1),
6115                                 -accesskey => "n", -title => "Alt-n"}, "next");
6116                $paging_nav .= " &sdot; $next_link";
6117        } else {
6118                $paging_nav .= " &sdot; next";
6119        }
6120
6121        git_header_html();
6122
6123        git_print_page_nav('','', $hash,$co{'tree'},$hash, $paging_nav);
6124        git_print_header_div('commit', esc_html($co{'title'}), $hash);
6125        if ($page == 0 && !@commitlist) {
6126                print "<p>No match.</p>\n";
6127        } else {
6128                git_search_grep_body(\@commitlist, 0, 99, $next_link);
6129        }
6130
6131        git_footer_html();
6132}
6133
6134sub git_search_changes {
6135        my %co = @_;
6136
6137        local $/ = "\n";
6138        open my $fd, '-|', git_cmd(), '--no-pager', 'log', @diff_opts,
6139                '--pretty=format:%H', '--no-abbrev', '--raw', "-S$searchtext",
6140                ($search_use_regexp ? '--pickaxe-regex' : ())
6141                        or die_error(500, "Open git-log failed");
6142
6143        git_header_html();
6144
6145        git_print_page_nav('','', $hash,$co{'tree'},$hash);
6146        git_print_header_div('commit', esc_html($co{'title'}), $hash);
6147
6148        print "<table class=\"pickaxe search\">\n";
6149        my $alternate = 1;
6150        undef %co;
6151        my @files;
6152        while (my $line = <$fd>) {
6153                chomp $line;
6154                next unless $line;
6155
6156                my %set = parse_difftree_raw_line($line);
6157                if (defined $set{'commit'}) {
6158                        # finish previous commit
6159                        if (%co) {
6160                                print "</td>\n" .
6161                                      "<td class=\"link\">" .
6162                                      $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})},
6163                                              "commit") .
6164                                      " | " .
6165                                      $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'},
6166                                                             hash_base=>$co{'id'})},
6167                                              "tree") .
6168                                      "</td>\n" .
6169                                      "</tr>\n";
6170                        }
6171
6172                        if ($alternate) {
6173                                print "<tr class=\"dark\">\n";
6174                        } else {
6175                                print "<tr class=\"light\">\n";
6176                        }
6177                        $alternate ^= 1;
6178                        %co = parse_commit($set{'commit'});
6179                        my $author = chop_and_escape_str($co{'author_name'}, 15, 5);
6180                        print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
6181                              "<td><i>$author</i></td>\n" .
6182                              "<td>" .
6183                              $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
6184                                      -class => "list subject"},
6185                                      chop_and_escape_str($co{'title'}, 50) . "<br/>");
6186                } elsif (defined $set{'to_id'}) {
6187                        next if ($set{'to_id'} =~ m/^0{40}$/);
6188
6189                        print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
6190                                                     hash=>$set{'to_id'}, file_name=>$set{'to_file'}),
6191                                      -class => "list"},
6192                                      "<span class=\"match\">" . esc_path($set{'file'}) . "</span>") .
6193                              "<br/>\n";
6194                }
6195        }
6196        close $fd;
6197
6198        # finish last commit (warning: repetition!)
6199        if (%co) {
6200                print "</td>\n" .
6201                      "<td class=\"link\">" .
6202                      $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})},
6203                              "commit") .
6204                      " | " .
6205                      $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'},
6206                                             hash_base=>$co{'id'})},
6207                              "tree") .
6208                      "</td>\n" .
6209                      "</tr>\n";
6210        }
6211
6212        print "</table>\n";
6213
6214        git_footer_html();
6215}
6216
6217sub git_search_files {
6218        my %co = @_;
6219
6220        local $/ = "\n";
6221        open my $fd, "-|", git_cmd(), 'grep', '-n', '-z',
6222                $search_use_regexp ? ('-E', '-i') : '-F',
6223                $searchtext, $co{'tree'}
6224                        or die_error(500, "Open git-grep failed");
6225
6226        git_header_html();
6227
6228        git_print_page_nav('','', $hash,$co{'tree'},$hash);
6229        git_print_header_div('commit', esc_html($co{'title'}), $hash);
6230
6231        print "<table class=\"grep_search\">\n";
6232        my $alternate = 1;
6233        my $matches = 0;
6234        my $lastfile = '';
6235        my $file_href;
6236        while (my $line = <$fd>) {
6237                chomp $line;
6238                my ($file, $lno, $ltext, $binary);
6239                last if ($matches++ > 1000);
6240                if ($line =~ /^Binary file (.+) matches$/) {
6241                        $file = $1;
6242                        $binary = 1;
6243                } else {
6244                        ($file, $lno, $ltext) = split(/\0/, $line, 3);
6245                        $file =~ s/^$co{'tree'}://;
6246                }
6247                if ($file ne $lastfile) {
6248                        $lastfile and print "</td></tr>\n";
6249                        if ($alternate++) {
6250                                print "<tr class=\"dark\">\n";
6251                        } else {
6252                                print "<tr class=\"light\">\n";
6253                        }
6254                        $file_href = href(action=>"blob", hash_base=>$co{'id'},
6255                                          file_name=>$file);
6256                        print "<td class=\"list\">".
6257                                $cgi->a({-href => $file_href, -class => "list"}, esc_path($file));
6258                        print "</td><td>\n";
6259                        $lastfile = $file;
6260                }
6261                if ($binary) {
6262                        print "<div class=\"binary\">Binary file</div>\n";
6263                } else {
6264                        $ltext = untabify($ltext);
6265                        if ($ltext =~ m/^(.*)($search_regexp)(.*)$/i) {
6266                                $ltext = esc_html($1, -nbsp=>1);
6267                                $ltext .= '<span class="match">';
6268                                $ltext .= esc_html($2, -nbsp=>1);
6269                                $ltext .= '</span>';
6270                                $ltext .= esc_html($3, -nbsp=>1);
6271                        } else {
6272                                $ltext = esc_html($ltext, -nbsp=>1);
6273                        }
6274                        print "<div class=\"pre\">" .
6275                                $cgi->a({-href => $file_href.'#l'.$lno,
6276                                        -class => "linenr"}, sprintf('%4i', $lno)) .
6277                                ' ' .  $ltext . "</div>\n";
6278                }
6279        }
6280        if ($lastfile) {
6281                print "</td></tr>\n";
6282                if ($matches > 1000) {
6283                        print "<div class=\"diff nodifferences\">Too many matches, listing trimmed</div>\n";
6284                }
6285        } else {
6286                print "<div class=\"diff nodifferences\">No matches found</div>\n";
6287        }
6288        close $fd;
6289
6290        print "</table>\n";
6291
6292        git_footer_html();
6293}
6294
6295sub git_search_grep_body {
6296        my ($commitlist, $from, $to, $extra) = @_;
6297        $from = 0 unless defined $from;
6298        $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
6299
6300        print "<table class=\"commit_search\">\n";
6301        my $alternate = 1;
6302        for (my $i = $from; $i <= $to; $i++) {
6303                my %co = %{$commitlist->[$i]};
6304                if (!%co) {
6305                        next;
6306                }
6307                my $commit = $co{'id'};
6308                if ($alternate) {
6309                        print "<tr class=\"dark\">\n";
6310                } else {
6311                        print "<tr class=\"light\">\n";
6312                }
6313                $alternate ^= 1;
6314                print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
6315                      format_author_html('td', \%co, 15, 5) .
6316                      "<td>" .
6317                      $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
6318                               -class => "list subject"},
6319                              chop_and_escape_str($co{'title'}, 50) . "<br/>");
6320                my $comment = $co{'comment'};
6321                foreach my $line (@$comment) {
6322                        if ($line =~ m/^(.*?)($search_regexp)(.*)$/i) {
6323                                my ($lead, $match, $trail) = ($1, $2, $3);
6324                                $match = chop_str($match, 70, 5, 'center');
6325                                my $contextlen = int((80 - length($match))/2);
6326                                $contextlen = 30 if ($contextlen > 30);
6327                                $lead  = chop_str($lead,  $contextlen, 10, 'left');
6328                                $trail = chop_str($trail, $contextlen, 10, 'right');
6329
6330                                $lead  = esc_html($lead);
6331                                $match = esc_html($match);
6332                                $trail = esc_html($trail);
6333
6334                                print "$lead<span class=\"match\">$match</span>$trail<br />";
6335                        }
6336                }
6337                print "</td>\n" .
6338                      "<td class=\"link\">" .
6339                      $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
6340                      " | " .
6341                      $cgi->a({-href => href(action=>"commitdiff", hash=>$co{'id'})}, "commitdiff") .
6342                      " | " .
6343                      $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
6344                print "</td>\n" .
6345                      "</tr>\n";
6346        }
6347        if (defined $extra) {
6348                print "<tr>\n" .
6349                      "<td colspan=\"3\">$extra</td>\n" .
6350                      "</tr>\n";
6351        }
6352        print "</table>\n";
6353}
6354
6355## ======================================================================
6356## ======================================================================
6357## actions
6358
6359sub git_project_list {
6360        my $order = $input_params{'order'};
6361        if (defined $order && $order !~ m/none|project|descr|owner|age/) {
6362                die_error(400, "Unknown order parameter");
6363        }
6364
6365        my @list = git_get_projects_list($project_filter, $strict_export);
6366        if (!@list) {
6367                die_error(404, "No projects found");
6368        }
6369
6370        git_header_html();
6371        if (defined $home_text && -f $home_text) {
6372                print "<div class=\"index_include\">\n";
6373                insert_file($home_text);
6374                print "</div>\n";
6375        }
6376
6377        git_project_search_form($searchtext, $search_use_regexp);
6378        git_project_list_body(\@list, $order);
6379        git_footer_html();
6380}
6381
6382sub git_forks {
6383        my $order = $input_params{'order'};
6384        if (defined $order && $order !~ m/none|project|descr|owner|age/) {
6385                die_error(400, "Unknown order parameter");
6386        }
6387
6388        my $filter = $project;
6389        $filter =~ s/\.git$//;
6390        my @list = git_get_projects_list($filter);
6391        if (!@list) {
6392                die_error(404, "No forks found");
6393        }
6394
6395        git_header_html();
6396        git_print_page_nav('','');
6397        git_print_header_div('summary', "$project forks");
6398        git_project_list_body(\@list, $order);
6399        git_footer_html();
6400}
6401
6402sub git_project_index {
6403        my @projects = git_get_projects_list($project_filter, $strict_export);
6404        if (!@projects) {
6405                die_error(404, "No projects found");
6406        }
6407
6408        print $cgi->header(
6409                -type => 'text/plain',
6410                -charset => 'utf-8',
6411                -content_disposition => 'inline; filename="index.aux"');
6412
6413        foreach my $pr (@projects) {
6414                if (!exists $pr->{'owner'}) {
6415                        $pr->{'owner'} = git_get_project_owner("$pr->{'path'}");
6416                }
6417
6418                my ($path, $owner) = ($pr->{'path'}, $pr->{'owner'});
6419                # quote as in CGI::Util::encode, but keep the slash, and use '+' for ' '
6420                $path  =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
6421                $owner =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
6422                $path  =~ s/ /\+/g;
6423                $owner =~ s/ /\+/g;
6424
6425                print "$path $owner\n";
6426        }
6427}
6428
6429sub git_summary {
6430        my $descr = git_get_project_description($project) || "none";
6431        my %co = parse_commit("HEAD");
6432        my %cd = %co ? parse_date($co{'committer_epoch'}, $co{'committer_tz'}) : ();
6433        my $head = $co{'id'};
6434        my $remote_heads = gitweb_check_feature('remote_heads');
6435
6436        my $owner = git_get_project_owner($project);
6437
6438        my $refs = git_get_references();
6439        # These get_*_list functions return one more to allow us to see if
6440        # there are more ...
6441        my @taglist  = git_get_tags_list(16);
6442        my @headlist = git_get_heads_list(16);
6443        my %remotedata = $remote_heads ? git_get_remotes_list() : ();
6444        my @forklist;
6445        my $check_forks = gitweb_check_feature('forks');
6446
6447        if ($check_forks) {
6448                # find forks of a project
6449                my $filter = $project;
6450                $filter =~ s/\.git$//;
6451                @forklist = git_get_projects_list($filter);
6452                # filter out forks of forks
6453                @forklist = filter_forks_from_projects_list(\@forklist)
6454                        if (@forklist);
6455        }
6456
6457        git_header_html();
6458        git_print_page_nav('summary','', $head);
6459
6460        print "<div class=\"title\">&nbsp;</div>\n";
6461        print "<table class=\"projects_list\">\n" .
6462              "<tr id=\"metadata_desc\"><td>description</td><td>" . esc_html($descr) . "</td></tr>\n";
6463        unless ($omit_owner) {
6464                print  "<tr id=\"metadata_owner\"><td>owner</td><td>" . esc_html($owner) . "</td></tr>\n";
6465        }
6466        if (defined $cd{'rfc2822'}) {
6467                print "<tr id=\"metadata_lchange\"><td>last change</td>" .
6468                      "<td>".format_timestamp_html(\%cd)."</td></tr>\n";
6469        }
6470
6471        # use per project git URL list in $projectroot/$project/cloneurl
6472        # or make project git URL from git base URL and project name
6473        my $url_tag = "URL";
6474        my @url_list = git_get_project_url_list($project);
6475        @url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
6476        foreach my $git_url (@url_list) {
6477                next unless $git_url;
6478                print format_repo_url($url_tag, $git_url);
6479                $url_tag = "";
6480        }
6481
6482        # Tag cloud
6483        my $show_ctags = gitweb_check_feature('ctags');
6484        if ($show_ctags) {
6485                my $ctags = git_get_project_ctags($project);
6486                if (%$ctags) {
6487                        # without ability to add tags, don't show if there are none
6488                        my $cloud = git_populate_project_tagcloud($ctags);
6489                        print "<tr id=\"metadata_ctags\">" .
6490                              "<td>content tags</td>" .
6491                              "<td>".git_show_project_tagcloud($cloud, 48)."</td>" .
6492                              "</tr>\n";
6493                }
6494        }
6495
6496        print "</table>\n";
6497
6498        # If XSS prevention is on, we don't include README.html.
6499        # TODO: Allow a readme in some safe format.
6500        if (!$prevent_xss && -s "$projectroot/$project/README.html") {
6501                print "<div class=\"title\">readme</div>\n" .
6502                      "<div class=\"readme\">\n";
6503                insert_file("$projectroot/$project/README.html");
6504                print "\n</div>\n"; # class="readme"
6505        }
6506
6507        # we need to request one more than 16 (0..15) to check if
6508        # those 16 are all
6509        my @commitlist = $head ? parse_commits($head, 17) : ();
6510        if (@commitlist) {
6511                git_print_header_div('shortlog');
6512                git_shortlog_body(\@commitlist, 0, 15, $refs,
6513                                  $#commitlist <=  15 ? undef :
6514                                  $cgi->a({-href => href(action=>"shortlog")}, "..."));
6515        }
6516
6517        if (@taglist) {
6518                git_print_header_div('tags');
6519                git_tags_body(\@taglist, 0, 15,
6520                              $#taglist <=  15 ? undef :
6521                              $cgi->a({-href => href(action=>"tags")}, "..."));
6522        }
6523
6524        if (@headlist) {
6525                git_print_header_div('heads');
6526                git_heads_body(\@headlist, $head, 0, 15,
6527                               $#headlist <= 15 ? undef :
6528                               $cgi->a({-href => href(action=>"heads")}, "..."));
6529        }
6530
6531        if (%remotedata) {
6532                git_print_header_div('remotes');
6533                git_remotes_body(\%remotedata, 15, $head);
6534        }
6535
6536        if (@forklist) {
6537                git_print_header_div('forks');
6538                git_project_list_body(\@forklist, 'age', 0, 15,
6539                                      $#forklist <= 15 ? undef :
6540                                      $cgi->a({-href => href(action=>"forks")}, "..."),
6541                                      'no_header');
6542        }
6543
6544        git_footer_html();
6545}
6546
6547sub git_tag {
6548        my %tag = parse_tag($hash);
6549
6550        if (! %tag) {
6551                die_error(404, "Unknown tag object");
6552        }
6553
6554        my $head = git_get_head_hash($project);
6555        git_header_html();
6556        git_print_page_nav('','', $head,undef,$head);
6557        git_print_header_div('commit', esc_html($tag{'name'}), $hash);
6558        print "<div class=\"title_text\">\n" .
6559              "<table class=\"object_header\">\n" .
6560              "<tr>\n" .
6561              "<td>object</td>\n" .
6562              "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
6563                               $tag{'object'}) . "</td>\n" .
6564              "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
6565                                              $tag{'type'}) . "</td>\n" .
6566              "</tr>\n";
6567        if (defined($tag{'author'})) {
6568                git_print_authorship_rows(\%tag, 'author');
6569        }
6570        print "</table>\n\n" .
6571              "</div>\n";
6572        print "<div class=\"page_body\">";
6573        my $comment = $tag{'comment'};
6574        foreach my $line (@$comment) {
6575                chomp $line;
6576                print esc_html($line, -nbsp=>1) . "<br/>\n";
6577        }
6578        print "</div>\n";
6579        git_footer_html();
6580}
6581
6582sub git_blame_common {
6583        my $format = shift || 'porcelain';
6584        if ($format eq 'porcelain' && $input_params{'javascript'}) {
6585                $format = 'incremental';
6586                $action = 'blame_incremental'; # for page title etc
6587        }
6588
6589        # permissions
6590        gitweb_check_feature('blame')
6591                or die_error(403, "Blame view not allowed");
6592
6593        # error checking
6594        die_error(400, "No file name given") unless $file_name;
6595        $hash_base ||= git_get_head_hash($project);
6596        die_error(404, "Couldn't find base commit") unless $hash_base;
6597        my %co = parse_commit($hash_base)
6598                or die_error(404, "Commit not found");
6599        my $ftype = "blob";
6600        if (!defined $hash) {
6601                $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
6602                        or die_error(404, "Error looking up file");
6603        } else {
6604                $ftype = git_get_type($hash);
6605                if ($ftype !~ "blob") {
6606                        die_error(400, "Object is not a blob");
6607                }
6608        }
6609
6610        my $fd;
6611        if ($format eq 'incremental') {
6612                # get file contents (as base)
6613                open $fd, "-|", git_cmd(), 'cat-file', 'blob', $hash
6614                        or die_error(500, "Open git-cat-file failed");
6615        } elsif ($format eq 'data') {
6616                # run git-blame --incremental
6617                open $fd, "-|", git_cmd(), "blame", "--incremental",
6618                        $hash_base, "--", $file_name
6619                        or die_error(500, "Open git-blame --incremental failed");
6620        } else {
6621                # run git-blame --porcelain
6622                open $fd, "-|", git_cmd(), "blame", '-p',
6623                        $hash_base, '--', $file_name
6624                        or die_error(500, "Open git-blame --porcelain failed");
6625        }
6626
6627        # incremental blame data returns early
6628        if ($format eq 'data') {
6629                print $cgi->header(
6630                        -type=>"text/plain", -charset => "utf-8",
6631                        -status=> "200 OK");
6632                local $| = 1; # output autoflush
6633                while (my $line = <$fd>) {
6634                        print to_utf8($line);
6635                }
6636                close $fd
6637                        or print "ERROR $!\n";
6638
6639                print 'END';
6640                if (defined $t0 && gitweb_check_feature('timed')) {
6641                        print ' '.
6642                              tv_interval($t0, [ gettimeofday() ]).
6643                              ' '.$number_of_git_cmds;
6644                }
6645                print "\n";
6646
6647                return;
6648        }
6649
6650        # page header
6651        git_header_html();
6652        my $formats_nav =
6653                $cgi->a({-href => href(action=>"blob", -replay=>1)},
6654                        "blob") .
6655                " | ";
6656        if ($format eq 'incremental') {
6657                $formats_nav .=
6658                        $cgi->a({-href => href(action=>"blame", javascript=>0, -replay=>1)},
6659                                "blame") . " (non-incremental)";
6660        } else {
6661                $formats_nav .=
6662                        $cgi->a({-href => href(action=>"blame_incremental", -replay=>1)},
6663                                "blame") . " (incremental)";
6664        }
6665        $formats_nav .=
6666                " | " .
6667                $cgi->a({-href => href(action=>"history", -replay=>1)},
6668                        "history") .
6669                " | " .
6670                $cgi->a({-href => href(action=>$action, file_name=>$file_name)},
6671                        "HEAD");
6672        git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
6673        git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
6674        git_print_page_path($file_name, $ftype, $hash_base);
6675
6676        # page body
6677        if ($format eq 'incremental') {
6678                print "<noscript>\n<div class=\"error\"><center><b>\n".
6679                      "This page requires JavaScript to run.\n Use ".
6680                      $cgi->a({-href => href(action=>'blame',javascript=>0,-replay=>1)},
6681                              'this page').
6682                      " instead.\n".
6683                      "</b></center></div>\n</noscript>\n";
6684
6685                print qq!<div id="progress_bar" style="width: 100%; background-color: yellow"></div>\n!;
6686        }
6687
6688        print qq!<div class="page_body">\n!;
6689        print qq!<div id="progress_info">... / ...</div>\n!
6690                if ($format eq 'incremental');
6691        print qq!<table id="blame_table" class="blame" width="100%">\n!.
6692              #qq!<col width="5.5em" /><col width="2.5em" /><col width="*" />\n!.
6693              qq!<thead>\n!.
6694              qq!<tr><th>Commit</th><th>Line</th><th>Data</th></tr>\n!.
6695              qq!</thead>\n!.
6696              qq!<tbody>\n!;
6697
6698        my @rev_color = qw(light dark);
6699        my $num_colors = scalar(@rev_color);
6700        my $current_color = 0;
6701
6702        if ($format eq 'incremental') {
6703                my $color_class = $rev_color[$current_color];
6704
6705                #contents of a file
6706                my $linenr = 0;
6707        LINE:
6708                while (my $line = <$fd>) {
6709                        chomp $line;
6710                        $linenr++;
6711
6712                        print qq!<tr id="l$linenr" class="$color_class">!.
6713                              qq!<td class="sha1"><a href=""> </a></td>!.
6714                              qq!<td class="linenr">!.
6715                              qq!<a class="linenr" href="">$linenr</a></td>!;
6716                        print qq!<td class="pre">! . esc_html($line) . "</td>\n";
6717                        print qq!</tr>\n!;
6718                }
6719
6720        } else { # porcelain, i.e. ordinary blame
6721                my %metainfo = (); # saves information about commits
6722
6723                # blame data
6724        LINE:
6725                while (my $line = <$fd>) {
6726                        chomp $line;
6727                        # the header: <SHA-1> <src lineno> <dst lineno> [<lines in group>]
6728                        # no <lines in group> for subsequent lines in group of lines
6729                        my ($full_rev, $orig_lineno, $lineno, $group_size) =
6730                           ($line =~ /^([0-9a-f]{40}) (\d+) (\d+)(?: (\d+))?$/);
6731                        if (!exists $metainfo{$full_rev}) {
6732                                $metainfo{$full_rev} = { 'nprevious' => 0 };
6733                        }
6734                        my $meta = $metainfo{$full_rev};
6735                        my $data;
6736                        while ($data = <$fd>) {
6737                                chomp $data;
6738                                last if ($data =~ s/^\t//); # contents of line
6739                                if ($data =~ /^(\S+)(?: (.*))?$/) {
6740                                        $meta->{$1} = $2 unless exists $meta->{$1};
6741                                }
6742                                if ($data =~ /^previous /) {
6743                                        $meta->{'nprevious'}++;
6744                                }
6745                        }
6746                        my $short_rev = substr($full_rev, 0, 8);
6747                        my $author = $meta->{'author'};
6748                        my %date =
6749                                parse_date($meta->{'author-time'}, $meta->{'author-tz'});
6750                        my $date = $date{'iso-tz'};
6751                        if ($group_size) {
6752                                $current_color = ($current_color + 1) % $num_colors;
6753                        }
6754                        my $tr_class = $rev_color[$current_color];
6755                        $tr_class .= ' boundary' if (exists $meta->{'boundary'});
6756                        $tr_class .= ' no-previous' if ($meta->{'nprevious'} == 0);
6757                        $tr_class .= ' multiple-previous' if ($meta->{'nprevious'} > 1);
6758                        print "<tr id=\"l$lineno\" class=\"$tr_class\">\n";
6759                        if ($group_size) {
6760                                print "<td class=\"sha1\"";
6761                                print " title=\"". esc_html($author) . ", $date\"";
6762                                print " rowspan=\"$group_size\"" if ($group_size > 1);
6763                                print ">";
6764                                print $cgi->a({-href => href(action=>"commit",
6765                                                             hash=>$full_rev,
6766                                                             file_name=>$file_name)},
6767                                              esc_html($short_rev));
6768                                if ($group_size >= 2) {
6769                                        my @author_initials = ($author =~ /\b([[:upper:]])\B/g);
6770                                        if (@author_initials) {
6771                                                print "<br />" .
6772                                                      esc_html(join('', @author_initials));
6773                                                #           or join('.', ...)
6774                                        }
6775                                }
6776                                print "</td>\n";
6777                        }
6778                        # 'previous' <sha1 of parent commit> <filename at commit>
6779                        if (exists $meta->{'previous'} &&
6780                            $meta->{'previous'} =~ /^([a-fA-F0-9]{40}) (.*)$/) {
6781                                $meta->{'parent'} = $1;
6782                                $meta->{'file_parent'} = unquote($2);
6783                        }
6784                        my $linenr_commit =
6785                                exists($meta->{'parent'}) ?
6786                                $meta->{'parent'} : $full_rev;
6787                        my $linenr_filename =
6788                                exists($meta->{'file_parent'}) ?
6789                                $meta->{'file_parent'} : unquote($meta->{'filename'});
6790                        my $blamed = href(action => 'blame',
6791                                          file_name => $linenr_filename,
6792                                          hash_base => $linenr_commit);
6793                        print "<td class=\"linenr\">";
6794                        print $cgi->a({ -href => "$blamed#l$orig_lineno",
6795                                        -class => "linenr" },
6796                                      esc_html($lineno));
6797                        print "</td>";
6798                        print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
6799                        print "</tr>\n";
6800                } # end while
6801
6802        }
6803
6804        # footer
6805        print "</tbody>\n".
6806              "</table>\n"; # class="blame"
6807        print "</div>\n";   # class="blame_body"
6808        close $fd
6809                or print "Reading blob failed\n";
6810
6811        git_footer_html();
6812}
6813
6814sub git_blame {
6815        git_blame_common();
6816}
6817
6818sub git_blame_incremental {
6819        git_blame_common('incremental');
6820}
6821
6822sub git_blame_data {
6823        git_blame_common('data');
6824}
6825
6826sub git_tags {
6827        my $head = git_get_head_hash($project);
6828        git_header_html();
6829        git_print_page_nav('','', $head,undef,$head,format_ref_views('tags'));
6830        git_print_header_div('summary', $project);
6831
6832        my @tagslist = git_get_tags_list();
6833        if (@tagslist) {
6834                git_tags_body(\@tagslist);
6835        }
6836        git_footer_html();
6837}
6838
6839sub git_heads {
6840        my $head = git_get_head_hash($project);
6841        git_header_html();
6842        git_print_page_nav('','', $head,undef,$head,format_ref_views('heads'));
6843        git_print_header_div('summary', $project);
6844
6845        my @headslist = git_get_heads_list();
6846        if (@headslist) {
6847                git_heads_body(\@headslist, $head);
6848        }
6849        git_footer_html();
6850}
6851
6852# used both for single remote view and for list of all the remotes
6853sub git_remotes {
6854        gitweb_check_feature('remote_heads')
6855                or die_error(403, "Remote heads view is disabled");
6856
6857        my $head = git_get_head_hash($project);
6858        my $remote = $input_params{'hash'};
6859
6860        my $remotedata = git_get_remotes_list($remote);
6861        die_error(500, "Unable to get remote information") unless defined $remotedata;
6862
6863        unless (%$remotedata) {
6864                die_error(404, defined $remote ?
6865                        "Remote $remote not found" :
6866                        "No remotes found");
6867        }
6868
6869        git_header_html(undef, undef, -action_extra => $remote);
6870        git_print_page_nav('', '',  $head, undef, $head,
6871                format_ref_views($remote ? '' : 'remotes'));
6872
6873        fill_remote_heads($remotedata);
6874        if (defined $remote) {
6875                git_print_header_div('remotes', "$remote remote for $project");
6876                git_remote_block($remote, $remotedata->{$remote}, undef, $head);
6877        } else {
6878                git_print_header_div('summary', "$project remotes");
6879                git_remotes_body($remotedata, undef, $head);
6880        }
6881
6882        git_footer_html();
6883}
6884
6885sub git_blob_plain {
6886        my $type = shift;
6887        my $expires;
6888
6889        if (!defined $hash) {
6890                if (defined $file_name) {
6891                        my $base = $hash_base || git_get_head_hash($project);
6892                        $hash = git_get_hash_by_path($base, $file_name, "blob")
6893                                or die_error(404, "Cannot find file");
6894                } else {
6895                        die_error(400, "No file name defined");
6896                }
6897        } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
6898                # blobs defined by non-textual hash id's can be cached
6899                $expires = "+1d";
6900        }
6901
6902        open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
6903                or die_error(500, "Open git-cat-file blob '$hash' failed");
6904
6905        # content-type (can include charset)
6906        $type = blob_contenttype($fd, $file_name, $type);
6907
6908        # "save as" filename, even when no $file_name is given
6909        my $save_as = "$hash";
6910        if (defined $file_name) {
6911                $save_as = $file_name;
6912        } elsif ($type =~ m/^text\//) {
6913                $save_as .= '.txt';
6914        }
6915
6916        # With XSS prevention on, blobs of all types except a few known safe
6917        # ones are served with "Content-Disposition: attachment" to make sure
6918        # they don't run in our security domain.  For certain image types,
6919        # blob view writes an <img> tag referring to blob_plain view, and we
6920        # want to be sure not to break that by serving the image as an
6921        # attachment (though Firefox 3 doesn't seem to care).
6922        my $sandbox = $prevent_xss &&
6923                $type !~ m!^(?:text/[a-z]+|image/(?:gif|png|jpeg))(?:[ ;]|$)!;
6924
6925        # serve text/* as text/plain
6926        if ($prevent_xss &&
6927            ($type =~ m!^text/[a-z]+\b(.*)$! ||
6928             ($type =~ m!^[a-z]+/[a-z]\+xml\b(.*)$! && -T $fd))) {
6929                my $rest = $1;
6930                $rest = defined $rest ? $rest : '';
6931                $type = "text/plain$rest";
6932        }
6933
6934        print $cgi->header(
6935                -type => $type,
6936                -expires => $expires,
6937                -content_disposition =>
6938                        ($sandbox ? 'attachment' : 'inline')
6939                        . '; filename="' . $save_as . '"');
6940        local $/ = undef;
6941        binmode STDOUT, ':raw';
6942        print <$fd>;
6943        binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
6944        close $fd;
6945}
6946
6947sub git_blob {
6948        my $expires;
6949
6950        if (!defined $hash) {
6951                if (defined $file_name) {
6952                        my $base = $hash_base || git_get_head_hash($project);
6953                        $hash = git_get_hash_by_path($base, $file_name, "blob")
6954                                or die_error(404, "Cannot find file");
6955                } else {
6956                        die_error(400, "No file name defined");
6957                }
6958        } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
6959                # blobs defined by non-textual hash id's can be cached
6960                $expires = "+1d";
6961        }
6962
6963        my $have_blame = gitweb_check_feature('blame');
6964        open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
6965                or die_error(500, "Couldn't cat $file_name, $hash");
6966        my $mimetype = blob_mimetype($fd, $file_name);
6967        # use 'blob_plain' (aka 'raw') view for files that cannot be displayed
6968        if ($mimetype !~ m!^(?:text/|image/(?:gif|png|jpeg)$)! && -B $fd) {
6969                close $fd;
6970                return git_blob_plain($mimetype);
6971        }
6972        # we can have blame only for text/* mimetype
6973        $have_blame &&= ($mimetype =~ m!^text/!);
6974
6975        my $highlight = gitweb_check_feature('highlight');
6976        my $syntax = guess_file_syntax($highlight, $mimetype, $file_name);
6977        $fd = run_highlighter($fd, $highlight, $syntax)
6978                if $syntax;
6979
6980        git_header_html(undef, $expires);
6981        my $formats_nav = '';
6982        if (defined $hash_base && (my %co = parse_commit($hash_base))) {
6983                if (defined $file_name) {
6984                        if ($have_blame) {
6985                                $formats_nav .=
6986                                        $cgi->a({-href => href(action=>"blame", -replay=>1)},
6987                                                "blame") .
6988                                        " | ";
6989                        }
6990                        $formats_nav .=
6991                                $cgi->a({-href => href(action=>"history", -replay=>1)},
6992                                        "history") .
6993                                " | " .
6994                                $cgi->a({-href => href(action=>"blob_plain", -replay=>1)},
6995                                        "raw") .
6996                                " | " .
6997                                $cgi->a({-href => href(action=>"blob",
6998                                                       hash_base=>"HEAD", file_name=>$file_name)},
6999                                        "HEAD");
7000                } else {
7001                        $formats_nav .=
7002                                $cgi->a({-href => href(action=>"blob_plain", -replay=>1)},
7003                                        "raw");
7004                }
7005                git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
7006                git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
7007        } else {
7008                print "<div class=\"page_nav\">\n" .
7009                      "<br/><br/></div>\n" .
7010                      "<div class=\"title\">".esc_html($hash)."</div>\n";
7011        }
7012        git_print_page_path($file_name, "blob", $hash_base);
7013        print "<div class=\"page_body\">\n";
7014        if ($mimetype =~ m!^image/!) {
7015                print qq!<img type="!.esc_attr($mimetype).qq!"!;
7016                if ($file_name) {
7017                        print qq! alt="!.esc_attr($file_name).qq!" title="!.esc_attr($file_name).qq!"!;
7018                }
7019                print qq! src="! .
7020                      href(action=>"blob_plain", hash=>$hash,
7021                           hash_base=>$hash_base, file_name=>$file_name) .
7022                      qq!" />\n!;
7023        } else {
7024                my $nr;
7025                while (my $line = <$fd>) {
7026                        chomp $line;
7027                        $nr++;
7028                        $line = untabify($line);
7029                        printf qq!<div class="pre"><a id="l%i" href="%s#l%i" class="linenr">%4i</a> %s</div>\n!,
7030                               $nr, esc_attr(href(-replay => 1)), $nr, $nr,
7031                               $syntax ? sanitize($line) : esc_html($line, -nbsp=>1);
7032                }
7033        }
7034        close $fd
7035                or print "Reading blob failed.\n";
7036        print "</div>";
7037        git_footer_html();
7038}
7039
7040sub git_tree {
7041        if (!defined $hash_base) {
7042                $hash_base = "HEAD";
7043        }
7044        if (!defined $hash) {
7045                if (defined $file_name) {
7046                        $hash = git_get_hash_by_path($hash_base, $file_name, "tree");
7047                } else {
7048                        $hash = $hash_base;
7049                }
7050        }
7051        die_error(404, "No such tree") unless defined($hash);
7052
7053        my $show_sizes = gitweb_check_feature('show-sizes');
7054        my $have_blame = gitweb_check_feature('blame');
7055
7056        my @entries = ();
7057        {
7058                local $/ = "\0";
7059                open my $fd, "-|", git_cmd(), "ls-tree", '-z',
7060                        ($show_sizes ? '-l' : ()), @extra_options, $hash
7061                        or die_error(500, "Open git-ls-tree failed");
7062                @entries = map { chomp; $_ } <$fd>;
7063                close $fd
7064                        or die_error(404, "Reading tree failed");
7065        }
7066
7067        my $refs = git_get_references();
7068        my $ref = format_ref_marker($refs, $hash_base);
7069        git_header_html();
7070        my $basedir = '';
7071        if (defined $hash_base && (my %co = parse_commit($hash_base))) {
7072                my @views_nav = ();
7073                if (defined $file_name) {
7074                        push @views_nav,
7075                                $cgi->a({-href => href(action=>"history", -replay=>1)},
7076                                        "history"),
7077                                $cgi->a({-href => href(action=>"tree",
7078                                                       hash_base=>"HEAD", file_name=>$file_name)},
7079                                        "HEAD"),
7080                }
7081                my $snapshot_links = format_snapshot_links($hash);
7082                if (defined $snapshot_links) {
7083                        # FIXME: Should be available when we have no hash base as well.
7084                        push @views_nav, $snapshot_links;
7085                }
7086                git_print_page_nav('tree','', $hash_base, undef, undef,
7087                                   join(' | ', @views_nav));
7088                git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
7089        } else {
7090                undef $hash_base;
7091                print "<div class=\"page_nav\">\n";
7092                print "<br/><br/></div>\n";
7093                print "<div class=\"title\">".esc_html($hash)."</div>\n";
7094        }
7095        if (defined $file_name) {
7096                $basedir = $file_name;
7097                if ($basedir ne '' && substr($basedir, -1) ne '/') {
7098                        $basedir .= '/';
7099                }
7100                git_print_page_path($file_name, 'tree', $hash_base);
7101        }
7102        print "<div class=\"page_body\">\n";
7103        print "<table class=\"tree\">\n";
7104        my $alternate = 1;
7105        # '..' (top directory) link if possible
7106        if (defined $hash_base &&
7107            defined $file_name && $file_name =~ m![^/]+$!) {
7108                if ($alternate) {
7109                        print "<tr class=\"dark\">\n";
7110                } else {
7111                        print "<tr class=\"light\">\n";
7112                }
7113                $alternate ^= 1;
7114
7115                my $up = $file_name;
7116                $up =~ s!/?[^/]+$!!;
7117                undef $up unless $up;
7118                # based on git_print_tree_entry
7119                print '<td class="mode">' . mode_str('040000') . "</td>\n";
7120                print '<td class="size">&nbsp;</td>'."\n" if $show_sizes;
7121                print '<td class="list">';
7122                print $cgi->a({-href => href(action=>"tree",
7123                                             hash_base=>$hash_base,
7124                                             file_name=>$up)},
7125                              "..");
7126                print "</td>\n";
7127                print "<td class=\"link\"></td>\n";
7128
7129                print "</tr>\n";
7130        }
7131        foreach my $line (@entries) {
7132                my %t = parse_ls_tree_line($line, -z => 1, -l => $show_sizes);
7133
7134                if ($alternate) {
7135                        print "<tr class=\"dark\">\n";
7136                } else {
7137                        print "<tr class=\"light\">\n";
7138                }
7139                $alternate ^= 1;
7140
7141                git_print_tree_entry(\%t, $basedir, $hash_base, $have_blame);
7142
7143                print "</tr>\n";
7144        }
7145        print "</table>\n" .
7146              "</div>";
7147        git_footer_html();
7148}
7149
7150sub snapshot_name {
7151        my ($project, $hash) = @_;
7152
7153        # path/to/project.git  -> project
7154        # path/to/project/.git -> project
7155        my $name = to_utf8($project);
7156        $name =~ s,([^/])/*\.git$,$1,;
7157        $name = basename($name);
7158        # sanitize name
7159        $name =~ s/[[:cntrl:]]/?/g;
7160
7161        my $ver = $hash;
7162        if ($hash =~ /^[0-9a-fA-F]+$/) {
7163                # shorten SHA-1 hash
7164                my $full_hash = git_get_full_hash($project, $hash);
7165                if ($full_hash =~ /^$hash/ && length($hash) > 7) {
7166                        $ver = git_get_short_hash($project, $hash);
7167                }
7168        } elsif ($hash =~ m!^refs/tags/(.*)$!) {
7169                # tags don't need shortened SHA-1 hash
7170                $ver = $1;
7171        } else {
7172                # branches and other need shortened SHA-1 hash
7173                if ($hash =~ m!^refs/(?:heads|remotes)/(.*)$!) {
7174                        $ver = $1;
7175                }
7176                $ver .= '-' . git_get_short_hash($project, $hash);
7177        }
7178        # in case of hierarchical branch names
7179        $ver =~ s!/!.!g;
7180
7181        # name = project-version_string
7182        $name = "$name-$ver";
7183
7184        return wantarray ? ($name, $name) : $name;
7185}
7186
7187sub exit_if_unmodified_since {
7188        my ($latest_epoch) = @_;
7189        our $cgi;
7190
7191        my $if_modified = $cgi->http('IF_MODIFIED_SINCE');
7192        if (defined $if_modified) {
7193                my $since;
7194                if (eval { require HTTP::Date; 1; }) {
7195                        $since = HTTP::Date::str2time($if_modified);
7196                } elsif (eval { require Time::ParseDate; 1; }) {
7197                        $since = Time::ParseDate::parsedate($if_modified, GMT => 1);
7198                }
7199                if (defined $since && $latest_epoch <= $since) {
7200                        my %latest_date = parse_date($latest_epoch);
7201                        print $cgi->header(
7202                                -last_modified => $latest_date{'rfc2822'},
7203                                -status => '304 Not Modified');
7204                        goto DONE_GITWEB;
7205                }
7206        }
7207}
7208
7209sub git_snapshot {
7210        my $format = $input_params{'snapshot_format'};
7211        if (!@snapshot_fmts) {
7212                die_error(403, "Snapshots not allowed");
7213        }
7214        # default to first supported snapshot format
7215        $format ||= $snapshot_fmts[0];
7216        if ($format !~ m/^[a-z0-9]+$/) {
7217                die_error(400, "Invalid snapshot format parameter");
7218        } elsif (!exists($known_snapshot_formats{$format})) {
7219                die_error(400, "Unknown snapshot format");
7220        } elsif ($known_snapshot_formats{$format}{'disabled'}) {
7221                die_error(403, "Snapshot format not allowed");
7222        } elsif (!grep($_ eq $format, @snapshot_fmts)) {
7223                die_error(403, "Unsupported snapshot format");
7224        }
7225
7226        my $type = git_get_type("$hash^{}");
7227        if (!$type) {
7228                die_error(404, 'Object does not exist');
7229        }  elsif ($type eq 'blob') {
7230                die_error(400, 'Object is not a tree-ish');
7231        }
7232
7233        my ($name, $prefix) = snapshot_name($project, $hash);
7234        my $filename = "$name$known_snapshot_formats{$format}{'suffix'}";
7235
7236        my %co = parse_commit($hash);
7237        exit_if_unmodified_since($co{'committer_epoch'}) if %co;
7238
7239        my $cmd = quote_command(
7240                git_cmd(), 'archive',
7241                "--format=$known_snapshot_formats{$format}{'format'}",
7242                "--prefix=$prefix/", $hash);
7243        if (exists $known_snapshot_formats{$format}{'compressor'}) {
7244                $cmd .= ' | ' . quote_command(@{$known_snapshot_formats{$format}{'compressor'}});
7245        }
7246
7247        $filename =~ s/(["\\])/\\$1/g;
7248        my %latest_date;
7249        if (%co) {
7250                %latest_date = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
7251        }
7252
7253        print $cgi->header(
7254                -type => $known_snapshot_formats{$format}{'type'},
7255                -content_disposition => 'inline; filename="' . $filename . '"',
7256                %co ? (-last_modified => $latest_date{'rfc2822'}) : (),
7257                -status => '200 OK');
7258
7259        open my $fd, "-|", $cmd
7260                or die_error(500, "Execute git-archive failed");
7261        binmode STDOUT, ':raw';
7262        print <$fd>;
7263        binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
7264        close $fd;
7265}
7266
7267sub git_log_generic {
7268        my ($fmt_name, $body_subr, $base, $parent, $file_name, $file_hash) = @_;
7269
7270        my $head = git_get_head_hash($project);
7271        if (!defined $base) {
7272                $base = $head;
7273        }
7274        if (!defined $page) {
7275                $page = 0;
7276        }
7277        my $refs = git_get_references();
7278
7279        my $commit_hash = $base;
7280        if (defined $parent) {
7281                $commit_hash = "$parent..$base";
7282        }
7283        my @commitlist =
7284                parse_commits($commit_hash, 101, (100 * $page),
7285                              defined $file_name ? ($file_name, "--full-history") : ());
7286
7287        my $ftype;
7288        if (!defined $file_hash && defined $file_name) {
7289                # some commits could have deleted file in question,
7290                # and not have it in tree, but one of them has to have it
7291                for (my $i = 0; $i < @commitlist; $i++) {
7292                        $file_hash = git_get_hash_by_path($commitlist[$i]{'id'}, $file_name);
7293                        last if defined $file_hash;
7294                }
7295        }
7296        if (defined $file_hash) {
7297                $ftype = git_get_type($file_hash);
7298        }
7299        if (defined $file_name && !defined $ftype) {
7300                die_error(500, "Unknown type of object");
7301        }
7302        my %co;
7303        if (defined $file_name) {
7304                %co = parse_commit($base)
7305                        or die_error(404, "Unknown commit object");
7306        }
7307
7308
7309        my $paging_nav = format_paging_nav($fmt_name, $page, $#commitlist >= 100);
7310        my $next_link = '';
7311        if ($#commitlist >= 100) {
7312                $next_link =
7313                        $cgi->a({-href => href(-replay=>1, page=>$page+1),
7314                                 -accesskey => "n", -title => "Alt-n"}, "next");
7315        }
7316        my $patch_max = gitweb_get_feature('patches');
7317        if ($patch_max && !defined $file_name) {
7318                if ($patch_max < 0 || @commitlist <= $patch_max) {
7319                        $paging_nav .= " &sdot; " .
7320                                $cgi->a({-href => href(action=>"patches", -replay=>1)},
7321                                        "patches");
7322                }
7323        }
7324
7325        git_header_html();
7326        git_print_page_nav($fmt_name,'', $hash,$hash,$hash, $paging_nav);
7327        if (defined $file_name) {
7328                git_print_header_div('commit', esc_html($co{'title'}), $base);
7329        } else {
7330                git_print_header_div('summary', $project)
7331        }
7332        git_print_page_path($file_name, $ftype, $hash_base)
7333                if (defined $file_name);
7334
7335        $body_subr->(\@commitlist, 0, 99, $refs, $next_link,
7336                     $file_name, $file_hash, $ftype);
7337
7338        git_footer_html();
7339}
7340
7341sub git_log {
7342        git_log_generic('log', \&git_log_body,
7343                        $hash, $hash_parent);
7344}
7345
7346sub git_commit {
7347        $hash ||= $hash_base || "HEAD";
7348        my %co = parse_commit($hash)
7349            or die_error(404, "Unknown commit object");
7350
7351        my $parent  = $co{'parent'};
7352        my $parents = $co{'parents'}; # listref
7353
7354        # we need to prepare $formats_nav before any parameter munging
7355        my $formats_nav;
7356        if (!defined $parent) {
7357                # --root commitdiff
7358                $formats_nav .= '(initial)';
7359        } elsif (@$parents == 1) {
7360                # single parent commit
7361                $formats_nav .=
7362                        '(parent: ' .
7363                        $cgi->a({-href => href(action=>"commit",
7364                                               hash=>$parent)},
7365                                esc_html(substr($parent, 0, 7))) .
7366                        ')';
7367        } else {
7368                # merge commit
7369                $formats_nav .=
7370                        '(merge: ' .
7371                        join(' ', map {
7372                                $cgi->a({-href => href(action=>"commit",
7373                                                       hash=>$_)},
7374                                        esc_html(substr($_, 0, 7)));
7375                        } @$parents ) .
7376                        ')';
7377        }
7378        if (gitweb_check_feature('patches') && @$parents <= 1) {
7379                $formats_nav .= " | " .
7380                        $cgi->a({-href => href(action=>"patch", -replay=>1)},
7381                                "patch");
7382        }
7383
7384        if (!defined $parent) {
7385                $parent = "--root";
7386        }
7387        my @difftree;
7388        open my $fd, "-|", git_cmd(), "diff-tree", '-r', "--no-commit-id",
7389                @diff_opts,
7390                (@$parents <= 1 ? $parent : '-c'),
7391                $hash, "--"
7392                or die_error(500, "Open git-diff-tree failed");
7393        @difftree = map { chomp; $_ } <$fd>;
7394        close $fd or die_error(404, "Reading git-diff-tree failed");
7395
7396        # non-textual hash id's can be cached
7397        my $expires;
7398        if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
7399                $expires = "+1d";
7400        }
7401        my $refs = git_get_references();
7402        my $ref = format_ref_marker($refs, $co{'id'});
7403
7404        git_header_html(undef, $expires);
7405        git_print_page_nav('commit', '',
7406                           $hash, $co{'tree'}, $hash,
7407                           $formats_nav);
7408
7409        if (defined $co{'parent'}) {
7410                git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
7411        } else {
7412                git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
7413        }
7414        print "<div class=\"title_text\">\n" .
7415              "<table class=\"object_header\">\n";
7416        git_print_authorship_rows(\%co);
7417        print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
7418        print "<tr>" .
7419              "<td>tree</td>" .
7420              "<td class=\"sha1\">" .
7421              $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash),
7422                       class => "list"}, $co{'tree'}) .
7423              "</td>" .
7424              "<td class=\"link\">" .
7425              $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)},
7426                      "tree");
7427        my $snapshot_links = format_snapshot_links($hash);
7428        if (defined $snapshot_links) {
7429                print " | " . $snapshot_links;
7430        }
7431        print "</td>" .
7432              "</tr>\n";
7433
7434        foreach my $par (@$parents) {
7435                print "<tr>" .
7436                      "<td>parent</td>" .
7437                      "<td class=\"sha1\">" .
7438                      $cgi->a({-href => href(action=>"commit", hash=>$par),
7439                               class => "list"}, $par) .
7440                      "</td>" .
7441                      "<td class=\"link\">" .
7442                      $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
7443                      " | " .
7444                      $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "diff") .
7445                      "</td>" .
7446                      "</tr>\n";
7447        }
7448        print "</table>".
7449              "</div>\n";
7450
7451        print "<div class=\"page_body\">\n";
7452        git_print_log($co{'comment'});
7453        print "</div>\n";
7454
7455        git_difftree_body(\@difftree, $hash, @$parents);
7456
7457        git_footer_html();
7458}
7459
7460sub git_object {
7461        # object is defined by:
7462        # - hash or hash_base alone
7463        # - hash_base and file_name
7464        my $type;
7465
7466        # - hash or hash_base alone
7467        if ($hash || ($hash_base && !defined $file_name)) {
7468                my $object_id = $hash || $hash_base;
7469
7470                open my $fd, "-|", quote_command(
7471                        git_cmd(), 'cat-file', '-t', $object_id) . ' 2> /dev/null'
7472                        or die_error(404, "Object does not exist");
7473                $type = <$fd>;
7474                chomp $type;
7475                close $fd
7476                        or die_error(404, "Object does not exist");
7477
7478        # - hash_base and file_name
7479        } elsif ($hash_base && defined $file_name) {
7480                $file_name =~ s,/+$,,;
7481
7482                system(git_cmd(), "cat-file", '-e', $hash_base) == 0
7483                        or die_error(404, "Base object does not exist");
7484
7485                # here errors should not hapen
7486                open my $fd, "-|", git_cmd(), "ls-tree", $hash_base, "--", $file_name
7487                        or die_error(500, "Open git-ls-tree failed");
7488                my $line = <$fd>;
7489                close $fd;
7490
7491                #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
7492                unless ($line && $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/) {
7493                        die_error(404, "File or directory for given base does not exist");
7494                }
7495                $type = $2;
7496                $hash = $3;
7497        } else {
7498                die_error(400, "Not enough information to find object");
7499        }
7500
7501        print $cgi->redirect(-uri => href(action=>$type, -full=>1,
7502                                          hash=>$hash, hash_base=>$hash_base,
7503                                          file_name=>$file_name),
7504                             -status => '302 Found');
7505}
7506
7507sub git_blobdiff {
7508        my $format = shift || 'html';
7509        my $diff_style = $input_params{'diff_style'} || 'inline';
7510
7511        my $fd;
7512        my @difftree;
7513        my %diffinfo;
7514        my $expires;
7515
7516        # preparing $fd and %diffinfo for git_patchset_body
7517        # new style URI
7518        if (defined $hash_base && defined $hash_parent_base) {
7519                if (defined $file_name) {
7520                        # read raw output
7521                        open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
7522                                $hash_parent_base, $hash_base,
7523                                "--", (defined $file_parent ? $file_parent : ()), $file_name
7524                                or die_error(500, "Open git-diff-tree failed");
7525                        @difftree = map { chomp; $_ } <$fd>;
7526                        close $fd
7527                                or die_error(404, "Reading git-diff-tree failed");
7528                        @difftree
7529                                or die_error(404, "Blob diff not found");
7530
7531                } elsif (defined $hash &&
7532                         $hash =~ /[0-9a-fA-F]{40}/) {
7533                        # try to find filename from $hash
7534
7535                        # read filtered raw output
7536                        open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
7537                                $hash_parent_base, $hash_base, "--"
7538                                or die_error(500, "Open git-diff-tree failed");
7539                        @difftree =
7540                                # ':100644 100644 03b21826... 3b93d5e7... M     ls-files.c'
7541                                # $hash == to_id
7542                                grep { /^:[0-7]{6} [0-7]{6} [0-9a-fA-F]{40} $hash/ }
7543                                map { chomp; $_ } <$fd>;
7544                        close $fd
7545                                or die_error(404, "Reading git-diff-tree failed");
7546                        @difftree
7547                                or die_error(404, "Blob diff not found");
7548
7549                } else {
7550                        die_error(400, "Missing one of the blob diff parameters");
7551                }
7552
7553                if (@difftree > 1) {
7554                        die_error(400, "Ambiguous blob diff specification");
7555                }
7556
7557                %diffinfo = parse_difftree_raw_line($difftree[0]);
7558                $file_parent ||= $diffinfo{'from_file'} || $file_name;
7559                $file_name   ||= $diffinfo{'to_file'};
7560
7561                $hash_parent ||= $diffinfo{'from_id'};
7562                $hash        ||= $diffinfo{'to_id'};
7563
7564                # non-textual hash id's can be cached
7565                if ($hash_base =~ m/^[0-9a-fA-F]{40}$/ &&
7566                    $hash_parent_base =~ m/^[0-9a-fA-F]{40}$/) {
7567                        $expires = '+1d';
7568                }
7569
7570                # open patch output
7571                open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
7572                        '-p', ($format eq 'html' ? "--full-index" : ()),
7573                        $hash_parent_base, $hash_base,
7574                        "--", (defined $file_parent ? $file_parent : ()), $file_name
7575                        or die_error(500, "Open git-diff-tree failed");
7576        }
7577
7578        # old/legacy style URI -- not generated anymore since 1.4.3.
7579        if (!%diffinfo) {
7580                die_error('404 Not Found', "Missing one of the blob diff parameters")
7581        }
7582
7583        # header
7584        if ($format eq 'html') {
7585                my $formats_nav =
7586                        $cgi->a({-href => href(action=>"blobdiff_plain", -replay=>1)},
7587                                "raw");
7588                $formats_nav .= diff_style_nav($diff_style);
7589                git_header_html(undef, $expires);
7590                if (defined $hash_base && (my %co = parse_commit($hash_base))) {
7591                        git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
7592                        git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
7593                } else {
7594                        print "<div class=\"page_nav\"><br/>$formats_nav<br/></div>\n";
7595                        print "<div class=\"title\">".esc_html("$hash vs $hash_parent")."</div>\n";
7596                }
7597                if (defined $file_name) {
7598                        git_print_page_path($file_name, "blob", $hash_base);
7599                } else {
7600                        print "<div class=\"page_path\"></div>\n";
7601                }
7602
7603        } elsif ($format eq 'plain') {
7604                print $cgi->header(
7605                        -type => 'text/plain',
7606                        -charset => 'utf-8',
7607                        -expires => $expires,
7608                        -content_disposition => 'inline; filename="' . "$file_name" . '.patch"');
7609
7610                print "X-Git-Url: " . $cgi->self_url() . "\n\n";
7611
7612        } else {
7613                die_error(400, "Unknown blobdiff format");
7614        }
7615
7616        # patch
7617        if ($format eq 'html') {
7618                print "<div class=\"page_body\">\n";
7619
7620                git_patchset_body($fd, $diff_style,
7621                                  [ \%diffinfo ], $hash_base, $hash_parent_base);
7622                close $fd;
7623
7624                print "</div>\n"; # class="page_body"
7625                git_footer_html();
7626
7627        } else {
7628                while (my $line = <$fd>) {
7629                        $line =~ s!a/($hash|$hash_parent)!'a/'.esc_path($diffinfo{'from_file'})!eg;
7630                        $line =~ s!b/($hash|$hash_parent)!'b/'.esc_path($diffinfo{'to_file'})!eg;
7631
7632                        print $line;
7633
7634                        last if $line =~ m!^\+\+\+!;
7635                }
7636                local $/ = undef;
7637                print <$fd>;
7638                close $fd;
7639        }
7640}
7641
7642sub git_blobdiff_plain {
7643        git_blobdiff('plain');
7644}
7645
7646# assumes that it is added as later part of already existing navigation,
7647# so it returns "| foo | bar" rather than just "foo | bar"
7648sub diff_style_nav {
7649        my ($diff_style, $is_combined) = @_;
7650        $diff_style ||= 'inline';
7651
7652        return "" if ($is_combined);
7653
7654        my @styles = (inline => 'inline', 'sidebyside' => 'side by side');
7655        my %styles = @styles;
7656        @styles =
7657                @styles[ map { $_ * 2 } 0..$#styles/2 ];
7658
7659        return join '',
7660                map { " | ".$_ }
7661                map {
7662                        $_ eq $diff_style ? $styles{$_} :
7663                        $cgi->a({-href => href(-replay=>1, diff_style => $_)}, $styles{$_})
7664                } @styles;
7665}
7666
7667sub git_commitdiff {
7668        my %params = @_;
7669        my $format = $params{-format} || 'html';
7670        my $diff_style = $input_params{'diff_style'} || 'inline';
7671
7672        my ($patch_max) = gitweb_get_feature('patches');
7673        if ($format eq 'patch') {
7674                die_error(403, "Patch view not allowed") unless $patch_max;
7675        }
7676
7677        $hash ||= $hash_base || "HEAD";
7678        my %co = parse_commit($hash)
7679            or die_error(404, "Unknown commit object");
7680
7681        # choose format for commitdiff for merge
7682        if (! defined $hash_parent && @{$co{'parents'}} > 1) {
7683                $hash_parent = '--cc';
7684        }
7685        # we need to prepare $formats_nav before almost any parameter munging
7686        my $formats_nav;
7687        if ($format eq 'html') {
7688                $formats_nav =
7689                        $cgi->a({-href => href(action=>"commitdiff_plain", -replay=>1)},
7690                                "raw");
7691                if ($patch_max && @{$co{'parents'}} <= 1) {
7692                        $formats_nav .= " | " .
7693                                $cgi->a({-href => href(action=>"patch", -replay=>1)},
7694                                        "patch");
7695                }
7696                $formats_nav .= diff_style_nav($diff_style, @{$co{'parents'}} > 1);
7697
7698                if (defined $hash_parent &&
7699                    $hash_parent ne '-c' && $hash_parent ne '--cc') {
7700                        # commitdiff with two commits given
7701                        my $hash_parent_short = $hash_parent;
7702                        if ($hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
7703                                $hash_parent_short = substr($hash_parent, 0, 7);
7704                        }
7705                        $formats_nav .=
7706                                ' (from';
7707                        for (my $i = 0; $i < @{$co{'parents'}}; $i++) {
7708                                if ($co{'parents'}[$i] eq $hash_parent) {
7709                                        $formats_nav .= ' parent ' . ($i+1);
7710                                        last;
7711                                }
7712                        }
7713                        $formats_nav .= ': ' .
7714                                $cgi->a({-href => href(-replay=>1,
7715                                                       hash=>$hash_parent, hash_base=>undef)},
7716                                        esc_html($hash_parent_short)) .
7717                                ')';
7718                } elsif (!$co{'parent'}) {
7719                        # --root commitdiff
7720                        $formats_nav .= ' (initial)';
7721                } elsif (scalar @{$co{'parents'}} == 1) {
7722                        # single parent commit
7723                        $formats_nav .=
7724                                ' (parent: ' .
7725                                $cgi->a({-href => href(-replay=>1,
7726                                                       hash=>$co{'parent'}, hash_base=>undef)},
7727                                        esc_html(substr($co{'parent'}, 0, 7))) .
7728                                ')';
7729                } else {
7730                        # merge commit
7731                        if ($hash_parent eq '--cc') {
7732                                $formats_nav .= ' | ' .
7733                                        $cgi->a({-href => href(-replay=>1,
7734                                                               hash=>$hash, hash_parent=>'-c')},
7735                                                'combined');
7736                        } else { # $hash_parent eq '-c'
7737                                $formats_nav .= ' | ' .
7738                                        $cgi->a({-href => href(-replay=>1,
7739                                                               hash=>$hash, hash_parent=>'--cc')},
7740                                                'compact');
7741                        }
7742                        $formats_nav .=
7743                                ' (merge: ' .
7744                                join(' ', map {
7745                                        $cgi->a({-href => href(-replay=>1,
7746                                                               hash=>$_, hash_base=>undef)},
7747                                                esc_html(substr($_, 0, 7)));
7748                                } @{$co{'parents'}} ) .
7749                                ')';
7750                }
7751        }
7752
7753        my $hash_parent_param = $hash_parent;
7754        if (!defined $hash_parent_param) {
7755                # --cc for multiple parents, --root for parentless
7756                $hash_parent_param =
7757                        @{$co{'parents'}} > 1 ? '--cc' : $co{'parent'} || '--root';
7758        }
7759
7760        # read commitdiff
7761        my $fd;
7762        my @difftree;
7763        if ($format eq 'html') {
7764                open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
7765                        "--no-commit-id", "--patch-with-raw", "--full-index",
7766                        $hash_parent_param, $hash, "--"
7767                        or die_error(500, "Open git-diff-tree failed");
7768
7769                while (my $line = <$fd>) {
7770                        chomp $line;
7771                        # empty line ends raw part of diff-tree output
7772                        last unless $line;
7773                        push @difftree, scalar parse_difftree_raw_line($line);
7774                }
7775
7776        } elsif ($format eq 'plain') {
7777                open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
7778                        '-p', $hash_parent_param, $hash, "--"
7779                        or die_error(500, "Open git-diff-tree failed");
7780        } elsif ($format eq 'patch') {
7781                # For commit ranges, we limit the output to the number of
7782                # patches specified in the 'patches' feature.
7783                # For single commits, we limit the output to a single patch,
7784                # diverging from the git-format-patch default.
7785                my @commit_spec = ();
7786                if ($hash_parent) {
7787                        if ($patch_max > 0) {
7788                                push @commit_spec, "-$patch_max";
7789                        }
7790                        push @commit_spec, '-n', "$hash_parent..$hash";
7791                } else {
7792                        if ($params{-single}) {
7793                                push @commit_spec, '-1';
7794                        } else {
7795                                if ($patch_max > 0) {
7796                                        push @commit_spec, "-$patch_max";
7797                                }
7798                                push @commit_spec, "-n";
7799                        }
7800                        push @commit_spec, '--root', $hash;
7801                }
7802                open $fd, "-|", git_cmd(), "format-patch", @diff_opts,
7803                        '--encoding=utf8', '--stdout', @commit_spec
7804                        or die_error(500, "Open git-format-patch failed");
7805        } else {
7806                die_error(400, "Unknown commitdiff format");
7807        }
7808
7809        # non-textual hash id's can be cached
7810        my $expires;
7811        if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
7812                $expires = "+1d";
7813        }
7814
7815        # write commit message
7816        if ($format eq 'html') {
7817                my $refs = git_get_references();
7818                my $ref = format_ref_marker($refs, $co{'id'});
7819
7820                git_header_html(undef, $expires);
7821                git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
7822                git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
7823                print "<div class=\"title_text\">\n" .
7824                      "<table class=\"object_header\">\n";
7825                git_print_authorship_rows(\%co);
7826                print "</table>".
7827                      "</div>\n";
7828                print "<div class=\"page_body\">\n";
7829                if (@{$co{'comment'}} > 1) {
7830                        print "<div class=\"log\">\n";
7831                        git_print_log($co{'comment'}, -final_empty_line=> 1, -remove_title => 1);
7832                        print "</div>\n"; # class="log"
7833                }
7834
7835        } elsif ($format eq 'plain') {
7836                my $refs = git_get_references("tags");
7837                my $tagname = git_get_rev_name_tags($hash);
7838                my $filename = basename($project) . "-$hash.patch";
7839
7840                print $cgi->header(
7841                        -type => 'text/plain',
7842                        -charset => 'utf-8',
7843                        -expires => $expires,
7844                        -content_disposition => 'inline; filename="' . "$filename" . '"');
7845                my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
7846                print "From: " . to_utf8($co{'author'}) . "\n";
7847                print "Date: $ad{'rfc2822'} ($ad{'tz_local'})\n";
7848                print "Subject: " . to_utf8($co{'title'}) . "\n";
7849
7850                print "X-Git-Tag: $tagname\n" if $tagname;
7851                print "X-Git-Url: " . $cgi->self_url() . "\n\n";
7852
7853                foreach my $line (@{$co{'comment'}}) {
7854                        print to_utf8($line) . "\n";
7855                }
7856                print "---\n\n";
7857        } elsif ($format eq 'patch') {
7858                my $filename = basename($project) . "-$hash.patch";
7859
7860                print $cgi->header(
7861                        -type => 'text/plain',
7862                        -charset => 'utf-8',
7863                        -expires => $expires,
7864                        -content_disposition => 'inline; filename="' . "$filename" . '"');
7865        }
7866
7867        # write patch
7868        if ($format eq 'html') {
7869                my $use_parents = !defined $hash_parent ||
7870                        $hash_parent eq '-c' || $hash_parent eq '--cc';
7871                git_difftree_body(\@difftree, $hash,
7872                                  $use_parents ? @{$co{'parents'}} : $hash_parent);
7873                print "<br/>\n";
7874
7875                git_patchset_body($fd, $diff_style,
7876                                  \@difftree, $hash,
7877                                  $use_parents ? @{$co{'parents'}} : $hash_parent);
7878                close $fd;
7879                print "</div>\n"; # class="page_body"
7880                git_footer_html();
7881
7882        } elsif ($format eq 'plain') {
7883                local $/ = undef;
7884                print <$fd>;
7885                close $fd
7886                        or print "Reading git-diff-tree failed\n";
7887        } elsif ($format eq 'patch') {
7888                local $/ = undef;
7889                print <$fd>;
7890                close $fd
7891                        or print "Reading git-format-patch failed\n";
7892        }
7893}
7894
7895sub git_commitdiff_plain {
7896        git_commitdiff(-format => 'plain');
7897}
7898
7899# format-patch-style patches
7900sub git_patch {
7901        git_commitdiff(-format => 'patch', -single => 1);
7902}
7903
7904sub git_patches {
7905        git_commitdiff(-format => 'patch');
7906}
7907
7908sub git_history {
7909        git_log_generic('history', \&git_history_body,
7910                        $hash_base, $hash_parent_base,
7911                        $file_name, $hash);
7912}
7913
7914sub git_search {
7915        $searchtype ||= 'commit';
7916
7917        # check if appropriate features are enabled
7918        gitweb_check_feature('search')
7919                or die_error(403, "Search is disabled");
7920        if ($searchtype eq 'pickaxe') {
7921                # pickaxe may take all resources of your box and run for several minutes
7922                # with every query - so decide by yourself how public you make this feature
7923                gitweb_check_feature('pickaxe')
7924                        or die_error(403, "Pickaxe search is disabled");
7925        }
7926        if ($searchtype eq 'grep') {
7927                # grep search might be potentially CPU-intensive, too
7928                gitweb_check_feature('grep')
7929                        or die_error(403, "Grep search is disabled");
7930        }
7931
7932        if (!defined $searchtext) {
7933                die_error(400, "Text field is empty");
7934        }
7935        if (!defined $hash) {
7936                $hash = git_get_head_hash($project);
7937        }
7938        my %co = parse_commit($hash);
7939        if (!%co) {
7940                die_error(404, "Unknown commit object");
7941        }
7942        if (!defined $page) {
7943                $page = 0;
7944        }
7945
7946        if ($searchtype eq 'commit' ||
7947            $searchtype eq 'author' ||
7948            $searchtype eq 'committer') {
7949                git_search_message(%co);
7950        } elsif ($searchtype eq 'pickaxe') {
7951                git_search_changes(%co);
7952        } elsif ($searchtype eq 'grep') {
7953                git_search_files(%co);
7954        } else {
7955                die_error(400, "Unknown search type");
7956        }
7957}
7958
7959sub git_search_help {
7960        git_header_html();
7961        git_print_page_nav('','', $hash,$hash,$hash);
7962        print <<EOT;
7963<p><strong>Pattern</strong> is by default a normal string that is matched precisely (but without
7964regard to case, except in the case of pickaxe). However, when you check the <em>re</em> checkbox,
7965the pattern entered is recognized as the POSIX extended
7966<a href="http://en.wikipedia.org/wiki/Regular_expression">regular expression</a> (also case
7967insensitive).</p>
7968<dl>
7969<dt><b>commit</b></dt>
7970<dd>The commit messages and authorship information will be scanned for the given pattern.</dd>
7971EOT
7972        my $have_grep = gitweb_check_feature('grep');
7973        if ($have_grep) {
7974                print <<EOT;
7975<dt><b>grep</b></dt>
7976<dd>All files in the currently selected tree (HEAD unless you are explicitly browsing
7977    a different one) are searched for the given pattern. On large trees, this search can take
7978a while and put some strain on the server, so please use it with some consideration. Note that
7979due to git-grep peculiarity, currently if regexp mode is turned off, the matches are
7980case-sensitive.</dd>
7981EOT
7982        }
7983        print <<EOT;
7984<dt><b>author</b></dt>
7985<dd>Name and e-mail of the change author and date of birth of the patch will be scanned for the given pattern.</dd>
7986<dt><b>committer</b></dt>
7987<dd>Name and e-mail of the committer and date of commit will be scanned for the given pattern.</dd>
7988EOT
7989        my $have_pickaxe = gitweb_check_feature('pickaxe');
7990        if ($have_pickaxe) {
7991                print <<EOT;
7992<dt><b>pickaxe</b></dt>
7993<dd>All commits that caused the string to appear or disappear from any file (changes that
7994added, removed or "modified" the string) will be listed. This search can take a while and
7995takes a lot of strain on the server, so please use it wisely. Note that since you may be
7996interested even in changes just changing the case as well, this search is case sensitive.</dd>
7997EOT
7998        }
7999        print "</dl>\n";
8000        git_footer_html();
8001}
8002
8003sub git_shortlog {
8004        git_log_generic('shortlog', \&git_shortlog_body,
8005                        $hash, $hash_parent);
8006}
8007
8008## ......................................................................
8009## feeds (RSS, Atom; OPML)
8010
8011sub git_feed {
8012        my $format = shift || 'atom';
8013        my $have_blame = gitweb_check_feature('blame');
8014
8015        # Atom: http://www.atomenabled.org/developers/syndication/
8016        # RSS:  http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
8017        if ($format ne 'rss' && $format ne 'atom') {
8018                die_error(400, "Unknown web feed format");
8019        }
8020
8021        # log/feed of current (HEAD) branch, log of given branch, history of file/directory
8022        my $head = $hash || 'HEAD';
8023        my @commitlist = parse_commits($head, 150, 0, $file_name);
8024
8025        my %latest_commit;
8026        my %latest_date;
8027        my $content_type = "application/$format+xml";
8028        if (defined $cgi->http('HTTP_ACCEPT') &&
8029                 $cgi->Accept('text/xml') > $cgi->Accept($content_type)) {
8030                # browser (feed reader) prefers text/xml
8031                $content_type = 'text/xml';
8032        }
8033        if (defined($commitlist[0])) {
8034                %latest_commit = %{$commitlist[0]};
8035                my $latest_epoch = $latest_commit{'committer_epoch'};
8036                exit_if_unmodified_since($latest_epoch);
8037                %latest_date = parse_date($latest_epoch, $latest_commit{'committer_tz'});
8038        }
8039        print $cgi->header(
8040                -type => $content_type,
8041                -charset => 'utf-8',
8042                %latest_date ? (-last_modified => $latest_date{'rfc2822'}) : (),
8043                -status => '200 OK');
8044
8045        # Optimization: skip generating the body if client asks only
8046        # for Last-Modified date.
8047        return if ($cgi->request_method() eq 'HEAD');
8048
8049        # header variables
8050        my $title = "$site_name - $project/$action";
8051        my $feed_type = 'log';
8052        if (defined $hash) {
8053                $title .= " - '$hash'";
8054                $feed_type = 'branch log';
8055                if (defined $file_name) {
8056                        $title .= " :: $file_name";
8057                        $feed_type = 'history';
8058                }
8059        } elsif (defined $file_name) {
8060                $title .= " - $file_name";
8061                $feed_type = 'history';
8062        }
8063        $title .= " $feed_type";
8064        $title = esc_html($title);
8065        my $descr = git_get_project_description($project);
8066        if (defined $descr) {
8067                $descr = esc_html($descr);
8068        } else {
8069                $descr = "$project " .
8070                         ($format eq 'rss' ? 'RSS' : 'Atom') .
8071                         " feed";
8072        }
8073        my $owner = git_get_project_owner($project);
8074        $owner = esc_html($owner);
8075
8076        #header
8077        my $alt_url;
8078        if (defined $file_name) {
8079                $alt_url = href(-full=>1, action=>"history", hash=>$hash, file_name=>$file_name);
8080        } elsif (defined $hash) {
8081                $alt_url = href(-full=>1, action=>"log", hash=>$hash);
8082        } else {
8083                $alt_url = href(-full=>1, action=>"summary");
8084        }
8085        print qq!<?xml version="1.0" encoding="utf-8"?>\n!;
8086        if ($format eq 'rss') {
8087                print <<XML;
8088<rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
8089<channel>
8090XML
8091                print "<title>$title</title>\n" .
8092                      "<link>$alt_url</link>\n" .
8093                      "<description>$descr</description>\n" .
8094                      "<language>en</language>\n" .
8095                      # project owner is responsible for 'editorial' content
8096                      "<managingEditor>$owner</managingEditor>\n";
8097                if (defined $logo || defined $favicon) {
8098                        # prefer the logo to the favicon, since RSS
8099                        # doesn't allow both
8100                        my $img = esc_url($logo || $favicon);
8101                        print "<image>\n" .
8102                              "<url>$img</url>\n" .
8103                              "<title>$title</title>\n" .
8104                              "<link>$alt_url</link>\n" .
8105                              "</image>\n";
8106                }
8107                if (%latest_date) {
8108                        print "<pubDate>$latest_date{'rfc2822'}</pubDate>\n";
8109                        print "<lastBuildDate>$latest_date{'rfc2822'}</lastBuildDate>\n";
8110                }
8111                print "<generator>gitweb v.$version/$git_version</generator>\n";
8112        } elsif ($format eq 'atom') {
8113                print <<XML;
8114<feed xmlns="http://www.w3.org/2005/Atom">
8115XML
8116                print "<title>$title</title>\n" .
8117                      "<subtitle>$descr</subtitle>\n" .
8118                      '<link rel="alternate" type="text/html" href="' .
8119                      $alt_url . '" />' . "\n" .
8120                      '<link rel="self" type="' . $content_type . '" href="' .
8121                      $cgi->self_url() . '" />' . "\n" .
8122                      "<id>" . href(-full=>1) . "</id>\n" .
8123                      # use project owner for feed author
8124                      "<author><name>$owner</name></author>\n";
8125                if (defined $favicon) {
8126                        print "<icon>" . esc_url($favicon) . "</icon>\n";
8127                }
8128                if (defined $logo) {
8129                        # not twice as wide as tall: 72 x 27 pixels
8130                        print "<logo>" . esc_url($logo) . "</logo>\n";
8131                }
8132                if (! %latest_date) {
8133                        # dummy date to keep the feed valid until commits trickle in:
8134                        print "<updated>1970-01-01T00:00:00Z</updated>\n";
8135                } else {
8136                        print "<updated>$latest_date{'iso-8601'}</updated>\n";
8137                }
8138                print "<generator version='$version/$git_version'>gitweb</generator>\n";
8139        }
8140
8141        # contents
8142        for (my $i = 0; $i <= $#commitlist; $i++) {
8143                my %co = %{$commitlist[$i]};
8144                my $commit = $co{'id'};
8145                # we read 150, we always show 30 and the ones more recent than 48 hours
8146                if (($i >= 20) && ((time - $co{'author_epoch'}) > 48*60*60)) {
8147                        last;
8148                }
8149                my %cd = parse_date($co{'author_epoch'}, $co{'author_tz'});
8150
8151                # get list of changed files
8152                open my $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
8153                        $co{'parent'} || "--root",
8154                        $co{'id'}, "--", (defined $file_name ? $file_name : ())
8155                        or next;
8156                my @difftree = map { chomp; $_ } <$fd>;
8157                close $fd
8158                        or next;
8159
8160                # print element (entry, item)
8161                my $co_url = href(-full=>1, action=>"commitdiff", hash=>$commit);
8162                if ($format eq 'rss') {
8163                        print "<item>\n" .
8164                              "<title>" . esc_html($co{'title'}) . "</title>\n" .
8165                              "<author>" . esc_html($co{'author'}) . "</author>\n" .
8166                              "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
8167                              "<guid isPermaLink=\"true\">$co_url</guid>\n" .
8168                              "<link>$co_url</link>\n" .
8169                              "<description>" . esc_html($co{'title'}) . "</description>\n" .
8170                              "<content:encoded>" .
8171                              "<![CDATA[\n";
8172                } elsif ($format eq 'atom') {
8173                        print "<entry>\n" .
8174                              "<title type=\"html\">" . esc_html($co{'title'}) . "</title>\n" .
8175                              "<updated>$cd{'iso-8601'}</updated>\n" .
8176                              "<author>\n" .
8177                              "  <name>" . esc_html($co{'author_name'}) . "</name>\n";
8178                        if ($co{'author_email'}) {
8179                                print "  <email>" . esc_html($co{'author_email'}) . "</email>\n";
8180                        }
8181                        print "</author>\n" .
8182                              # use committer for contributor
8183                              "<contributor>\n" .
8184                              "  <name>" . esc_html($co{'committer_name'}) . "</name>\n";
8185                        if ($co{'committer_email'}) {
8186                                print "  <email>" . esc_html($co{'committer_email'}) . "</email>\n";
8187                        }
8188                        print "</contributor>\n" .
8189                              "<published>$cd{'iso-8601'}</published>\n" .
8190                              "<link rel=\"alternate\" type=\"text/html\" href=\"$co_url\" />\n" .
8191                              "<id>$co_url</id>\n" .
8192                              "<content type=\"xhtml\" xml:base=\"" . esc_url($my_url) . "\">\n" .
8193                              "<div xmlns=\"http://www.w3.org/1999/xhtml\">\n";
8194                }
8195                my $comment = $co{'comment'};
8196                print "<pre>\n";
8197                foreach my $line (@$comment) {
8198                        $line = esc_html($line);
8199                        print "$line\n";
8200                }
8201                print "</pre><ul>\n";
8202                foreach my $difftree_line (@difftree) {
8203                        my %difftree = parse_difftree_raw_line($difftree_line);
8204                        next if !$difftree{'from_id'};
8205
8206                        my $file = $difftree{'file'} || $difftree{'to_file'};
8207
8208                        print "<li>" .
8209                              "[" .
8210                              $cgi->a({-href => href(-full=>1, action=>"blobdiff",
8211                                                     hash=>$difftree{'to_id'}, hash_parent=>$difftree{'from_id'},
8212                                                     hash_base=>$co{'id'}, hash_parent_base=>$co{'parent'},
8213                                                     file_name=>$file, file_parent=>$difftree{'from_file'}),
8214                                      -title => "diff"}, 'D');
8215                        if ($have_blame) {
8216                                print $cgi->a({-href => href(-full=>1, action=>"blame",
8217                                                             file_name=>$file, hash_base=>$commit),
8218                                              -title => "blame"}, 'B');
8219                        }
8220                        # if this is not a feed of a file history
8221                        if (!defined $file_name || $file_name ne $file) {
8222                                print $cgi->a({-href => href(-full=>1, action=>"history",
8223                                                             file_name=>$file, hash=>$commit),
8224                                              -title => "history"}, 'H');
8225                        }
8226                        $file = esc_path($file);
8227                        print "] ".
8228                              "$file</li>\n";
8229                }
8230                if ($format eq 'rss') {
8231                        print "</ul>]]>\n" .
8232                              "</content:encoded>\n" .
8233                              "</item>\n";
8234                } elsif ($format eq 'atom') {
8235                        print "</ul>\n</div>\n" .
8236                              "</content>\n" .
8237                              "</entry>\n";
8238                }
8239        }
8240
8241        # end of feed
8242        if ($format eq 'rss') {
8243                print "</channel>\n</rss>\n";
8244        } elsif ($format eq 'atom') {
8245                print "</feed>\n";
8246        }
8247}
8248
8249sub git_rss {
8250        git_feed('rss');
8251}
8252
8253sub git_atom {
8254        git_feed('atom');
8255}
8256
8257sub git_opml {
8258        my @list = git_get_projects_list($project_filter, $strict_export);
8259        if (!@list) {
8260                die_error(404, "No projects found");
8261        }
8262
8263        print $cgi->header(
8264                -type => 'text/xml',
8265                -charset => 'utf-8',
8266                -content_disposition => 'inline; filename="opml.xml"');
8267
8268        my $title = esc_html($site_name);
8269        my $filter = " within subdirectory ";
8270        if (defined $project_filter) {
8271                $filter .= esc_html($project_filter);
8272        } else {
8273                $filter = "";
8274        }
8275        print <<XML;
8276<?xml version="1.0" encoding="utf-8"?>
8277<opml version="1.0">
8278<head>
8279  <title>$title OPML Export$filter</title>
8280</head>
8281<body>
8282<outline text="git RSS feeds">
8283XML
8284
8285        foreach my $pr (@list) {
8286                my %proj = %$pr;
8287                my $head = git_get_head_hash($proj{'path'});
8288                if (!defined $head) {
8289                        next;
8290                }
8291                $git_dir = "$projectroot/$proj{'path'}";
8292                my %co = parse_commit($head);
8293                if (!%co) {
8294                        next;
8295                }
8296
8297                my $path = esc_html(chop_str($proj{'path'}, 25, 5));
8298                my $rss  = href('project' => $proj{'path'}, 'action' => 'rss', -full => 1);
8299                my $html = href('project' => $proj{'path'}, 'action' => 'summary', -full => 1);
8300                print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
8301        }
8302        print <<XML;
8303</outline>
8304</body>
8305</opml>
8306XML
8307}