Andrew's git - gitweb.git/blob - gitweb/gitweb.perl

   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 strict;
  11use warnings;
  12use CGI qw(:standard :escapeHTML -nosticky);
  13use CGI::Util qw(unescape);
  14use CGI::Carp qw(fatalsToBrowser);
  15use Encode;
  16use Fcntl ':mode';
  17use File::Find qw();
  18use File::Basename qw(basename);
  19binmode STDOUT, ':utf8';
  20
  21BEGIN {
  22        CGI->compile() if $ENV{'MOD_PERL'};
  23}
  24
  25our $cgi = new CGI;
  26our $version = "++GIT_VERSION++";
  27our $my_url = $cgi->url();
  28our $my_uri = $cgi->url(-absolute => 1);
  29
  30# core git executable to use
  31# this can just be "git" if your webserver has a sensible PATH
  32our $GIT = "++GIT_BINDIR++/git";
  33
  34# absolute fs-path which will be prepended to the project path
  35#our $projectroot = "/pub/scm";
  36our $projectroot = "++GITWEB_PROJECTROOT++";
  37
  38# fs traversing limit for getting project list
  39# the number is relative to the projectroot
  40our $project_maxdepth = "++GITWEB_PROJECT_MAXDEPTH++";
  41
  42# target of the home link on top of all pages
  43our $home_link = $my_uri || "/";
  44
  45# string of the home link on top of all pages
  46our $home_link_str = "++GITWEB_HOME_LINK_STR++";
  47
  48# name of your site or organization to appear in page titles
  49# replace this with something more descriptive for clearer bookmarks
  50our $site_name = "++GITWEB_SITENAME++"
  51                 || ($ENV{'SERVER_NAME'} || "Untitled") . " Git";
  52
  53# filename of html text to include at top of each page
  54our $site_header = "++GITWEB_SITE_HEADER++";
  55# html text to include at home page
  56our $home_text = "++GITWEB_HOMETEXT++";
  57# filename of html text to include at bottom of each page
  58our $site_footer = "++GITWEB_SITE_FOOTER++";
  59
  60# URI of stylesheets
  61our @stylesheets = ("++GITWEB_CSS++");
  62# URI of a single stylesheet, which can be overridden in GITWEB_CONFIG.
  63our $stylesheet = undef;
  64# URI of GIT logo (72x27 size)
  65our $logo = "++GITWEB_LOGO++";
  66# URI of GIT favicon, assumed to be image/png type
  67our $favicon = "++GITWEB_FAVICON++";
  68
  69# URI and label (title) of GIT logo link
  70#our $logo_url = "http://www.kernel.org/pub/software/scm/git/docs/";
  71#our $logo_label = "git documentation";
  72our $logo_url = "http://git.or.cz/";
  73our $logo_label = "git homepage";
  74
  75# source of projects list
  76our $projects_list = "++GITWEB_LIST++";
  77
  78# the width (in characters) of the projects list "Description" column
  79our $projects_list_description_width = 25;
  80
  81# default order of projects list
  82# valid values are none, project, descr, owner, and age
  83our $default_projects_order = "project";
  84
  85# show repository only if this file exists
  86# (only effective if this variable evaluates to true)
  87our $export_ok = "++GITWEB_EXPORT_OK++";
  88
  89# only allow viewing of repositories also shown on the overview page
  90our $strict_export = "++GITWEB_STRICT_EXPORT++";
  91
  92# list of git base URLs used for URL to where fetch project from,
  93# i.e. full URL is "$git_base_url/$project"
  94our @git_base_url_list = grep { $_ ne '' } ("++GITWEB_BASE_URL++");
  95
  96# default blob_plain mimetype and default charset for text/plain blob
  97our $default_blob_plain_mimetype = 'text/plain';
  98our $default_text_plain_charset  = undef;
  99
 100# file to use for guessing MIME types before trying /etc/mime.types
 101# (relative to the current git repository)
 102our $mimetypes_file = undef;
 103
 104# assume this charset if line contains non-UTF-8 characters;
 105# it should be valid encoding (see Encoding::Supported(3pm) for list),
 106# for which encoding all byte sequences are valid, for example
 107# 'iso-8859-1' aka 'latin1' (it is decoded without checking, so it
 108# could be even 'utf-8' for the old behavior)
 109our $fallback_encoding = 'latin1';
 110
 111# rename detection options for git-diff and git-diff-tree
 112# - default is '-M', with the cost proportional to
 113#   (number of removed files) * (number of new files).
 114# - more costly is '-C' (which implies '-M'), with the cost proportional to
 115#   (number of changed files + number of removed files) * (number of new files)
 116# - even more costly is '-C', '--find-copies-harder' with cost
 117#   (number of files in the original tree) * (number of new files)
 118# - one might want to include '-B' option, e.g. '-B', '-M'
 119our @diff_opts = ('-M'); # taken from git_commit
 120
 121# information about snapshot formats that gitweb is capable of serving
 122our %known_snapshot_formats = (
 123        # name => {
 124        #       'display' => display name,
 125        #       'type' => mime type,
 126        #       'suffix' => filename suffix,
 127        #       'format' => --format for git-archive,
 128        #       'compressor' => [compressor command and arguments]
 129        #                       (array reference, optional)}
 130        #
 131        'tgz' => {
 132                'display' => 'tar.gz',
 133                'type' => 'application/x-gzip',
 134                'suffix' => '.tar.gz',
 135                'format' => 'tar',
 136                'compressor' => ['gzip']},
 137
 138        'tbz2' => {
 139                'display' => 'tar.bz2',
 140                'type' => 'application/x-bzip2',
 141                'suffix' => '.tar.bz2',
 142                'format' => 'tar',
 143                'compressor' => ['bzip2']},
 144
 145        'zip' => {
 146                'display' => 'zip',
 147                'type' => 'application/x-zip',
 148                'suffix' => '.zip',
 149                'format' => 'zip'},
 150);
 151
 152# Aliases so we understand old gitweb.snapshot values in repository
 153# configuration.
 154our %known_snapshot_format_aliases = (
 155        'gzip'  => 'tgz',
 156        'bzip2' => 'tbz2',
 157
 158        # backward compatibility: legacy gitweb config support
 159        'x-gzip' => undef, 'gz' => undef,
 160        'x-bzip2' => undef, 'bz2' => undef,
 161        'x-zip' => undef, '' => undef,
 162);
 163
 164# You define site-wide feature defaults here; override them with
 165# $GITWEB_CONFIG as necessary.
 166our %feature = (
 167        # feature => {
 168        #       'sub' => feature-sub (subroutine),
 169        #       'override' => allow-override (boolean),
 170        #       'default' => [ default options...] (array reference)}
 171        #
 172        # if feature is overridable (it means that allow-override has true value),
 173        # then feature-sub will be called with default options as parameters;
 174        # return value of feature-sub indicates if to enable specified feature
 175        #
 176        # if there is no 'sub' key (no feature-sub), then feature cannot be
 177        # overriden
 178        #
 179        # use gitweb_check_feature(<feature>) to check if <feature> is enabled
 180
 181        # Enable the 'blame' blob view, showing the last commit that modified
 182        # each line in the file. This can be very CPU-intensive.
 183
 184        # To enable system wide have in $GITWEB_CONFIG
 185        # $feature{'blame'}{'default'} = [1];
 186        # To have project specific config enable override in $GITWEB_CONFIG
 187        # $feature{'blame'}{'override'} = 1;
 188        # and in project config gitweb.blame = 0|1;
 189        'blame' => {
 190                'sub' => \&feature_blame,
 191                'override' => 0,
 192                'default' => [0]},
 193
 194        # Enable the 'snapshot' link, providing a compressed archive of any
 195        # tree. This can potentially generate high traffic if you have large
 196        # project.
 197
 198        # Value is a list of formats defined in %known_snapshot_formats that
 199        # you wish to offer.
 200        # To disable system wide have in $GITWEB_CONFIG
 201        # $feature{'snapshot'}{'default'} = [];
 202        # To have project specific config enable override in $GITWEB_CONFIG
 203        # $feature{'snapshot'}{'override'} = 1;
 204        # and in project config, a comma-separated list of formats or "none"
 205        # to disable.  Example: gitweb.snapshot = tbz2,zip;
 206        'snapshot' => {
 207                'sub' => \&feature_snapshot,
 208                'override' => 0,
 209                'default' => ['tgz']},
 210
 211        # Enable text search, which will list the commits which match author,
 212        # committer or commit text to a given string.  Enabled by default.
 213        # Project specific override is not supported.
 214        'search' => {
 215                'override' => 0,
 216                'default' => [1]},
 217
 218        # Enable grep search, which will list the files in currently selected
 219        # tree containing the given string. Enabled by default. This can be
 220        # potentially CPU-intensive, of course.
 221
 222        # To enable system wide have in $GITWEB_CONFIG
 223        # $feature{'grep'}{'default'} = [1];
 224        # To have project specific config enable override in $GITWEB_CONFIG
 225        # $feature{'grep'}{'override'} = 1;
 226        # and in project config gitweb.grep = 0|1;
 227        'grep' => {
 228                'override' => 0,
 229                'default' => [1]},
 230
 231        # Enable the pickaxe search, which will list the commits that modified
 232        # a given string in a file. This can be practical and quite faster
 233        # alternative to 'blame', but still potentially CPU-intensive.
 234
 235        # To enable system wide have in $GITWEB_CONFIG
 236        # $feature{'pickaxe'}{'default'} = [1];
 237        # To have project specific config enable override in $GITWEB_CONFIG
 238        # $feature{'pickaxe'}{'override'} = 1;
 239        # and in project config gitweb.pickaxe = 0|1;
 240        'pickaxe' => {
 241                'sub' => \&feature_pickaxe,
 242                'override' => 0,
 243                'default' => [1]},
 244
 245        # Make gitweb use an alternative format of the URLs which can be
 246        # more readable and natural-looking: project name is embedded
 247        # directly in the path and the query string contains other
 248        # auxiliary information. All gitweb installations recognize
 249        # URL in either format; this configures in which formats gitweb
 250        # generates links.
 251
 252        # To enable system wide have in $GITWEB_CONFIG
 253        # $feature{'pathinfo'}{'default'} = [1];
 254        # Project specific override is not supported.
 255
 256        # Note that you will need to change the default location of CSS,
 257        # favicon, logo and possibly other files to an absolute URL. Also,
 258        # if gitweb.cgi serves as your indexfile, you will need to force
 259        # $my_uri to contain the script name in your $GITWEB_CONFIG.
 260        'pathinfo' => {
 261                'override' => 0,
 262                'default' => [0]},
 263
 264        # Make gitweb consider projects in project root subdirectories
 265        # to be forks of existing projects. Given project $projname.git,
 266        # projects matching $projname/*.git will not be shown in the main
 267        # projects list, instead a '+' mark will be added to $projname
 268        # there and a 'forks' view will be enabled for the project, listing
 269        # all the forks. If project list is taken from a file, forks have
 270        # to be listed after the main project.
 271
 272        # To enable system wide have in $GITWEB_CONFIG
 273        # $feature{'forks'}{'default'} = [1];
 274        # Project specific override is not supported.
 275        'forks' => {
 276                'override' => 0,
 277                'default' => [0]},
 278);
 279
 280sub gitweb_check_feature {
 281        my ($name) = @_;
 282        return unless exists $feature{$name};
 283        my ($sub, $override, @defaults) = (
 284                $feature{$name}{'sub'},
 285                $feature{$name}{'override'},
 286                @{$feature{$name}{'default'}});
 287        if (!$override) { return @defaults; }
 288        if (!defined $sub) {
 289                warn "feature $name is not overrideable";
 290                return @defaults;
 291        }
 292        return $sub->(@defaults);
 293}
 294
 295sub feature_blame {
 296        my ($val) = git_get_project_config('blame', '--bool');
 297
 298        if ($val eq 'true') {
 299                return 1;
 300        } elsif ($val eq 'false') {
 301                return 0;
 302        }
 303
 304        return $_[0];
 305}
 306
 307sub feature_snapshot {
 308        my (@fmts) = @_;
 309
 310        my ($val) = git_get_project_config('snapshot');
 311
 312        if ($val) {
 313                @fmts = ($val eq 'none' ? () : split /\s*[,\s]\s*/, $val);
 314        }
 315
 316        return @fmts;
 317}
 318
 319sub feature_grep {
 320        my ($val) = git_get_project_config('grep', '--bool');
 321
 322        if ($val eq 'true') {
 323                return (1);
 324        } elsif ($val eq 'false') {
 325                return (0);
 326        }
 327
 328        return ($_[0]);
 329}
 330
 331sub feature_pickaxe {
 332        my ($val) = git_get_project_config('pickaxe', '--bool');
 333
 334        if ($val eq 'true') {
 335                return (1);
 336        } elsif ($val eq 'false') {
 337                return (0);
 338        }
 339
 340        return ($_[0]);
 341}
 342
 343# checking HEAD file with -e is fragile if the repository was
 344# initialized long time ago (i.e. symlink HEAD) and was pack-ref'ed
 345# and then pruned.
 346sub check_head_link {
 347        my ($dir) = @_;
 348        my $headfile = "$dir/HEAD";
 349        return ((-e $headfile) ||
 350                (-l $headfile && readlink($headfile) =~ /^refs\/heads\//));
 351}
 352
 353sub check_export_ok {
 354        my ($dir) = @_;
 355        return (check_head_link($dir) &&
 356                (!$export_ok || -e "$dir/$export_ok"));
 357}
 358
 359# process alternate names for backward compatibility
 360# filter out unsupported (unknown) snapshot formats
 361sub filter_snapshot_fmts {
 362        my @fmts = @_;
 363
 364        @fmts = map {
 365                exists $known_snapshot_format_aliases{$_} ?
 366                       $known_snapshot_format_aliases{$_} : $_} @fmts;
 367        @fmts = grep(exists $known_snapshot_formats{$_}, @fmts);
 368
 369}
 370
 371our $GITWEB_CONFIG = $ENV{'GITWEB_CONFIG'} || "++GITWEB_CONFIG++";
 372if (-e $GITWEB_CONFIG) {
 373        do $GITWEB_CONFIG;
 374} else {
 375        our $GITWEB_CONFIG_SYSTEM = $ENV{'GITWEB_CONFIG_SYSTEM'} || "++GITWEB_CONFIG_SYSTEM++";
 376        do $GITWEB_CONFIG_SYSTEM if -e $GITWEB_CONFIG_SYSTEM;
 377}
 378
 379# version of the core git binary
 380our $git_version = qx($GIT --version) =~ m/git version (.*)$/ ? $1 : "unknown";
 381
 382$projects_list ||= $projectroot;
 383
 384# ======================================================================
 385# input validation and dispatch
 386our $action = $cgi->param('a');
 387if (defined $action) {
 388        if ($action =~ m/[^0-9a-zA-Z\.\-_]/) {
 389                die_error(undef, "Invalid action parameter");
 390        }
 391}
 392
 393# parameters which are pathnames
 394our $project = $cgi->param('p');
 395if (defined $project) {
 396        if (!validate_pathname($project) ||
 397            !(-d "$projectroot/$project") ||
 398            !check_head_link("$projectroot/$project") ||
 399            ($export_ok && !(-e "$projectroot/$project/$export_ok")) ||
 400            ($strict_export && !project_in_list($project))) {
 401                undef $project;
 402                die_error(undef, "No such project");
 403        }
 404}
 405
 406our $file_name = $cgi->param('f');
 407if (defined $file_name) {
 408        if (!validate_pathname($file_name)) {
 409                die_error(undef, "Invalid file parameter");
 410        }
 411}
 412
 413our $file_parent = $cgi->param('fp');
 414if (defined $file_parent) {
 415        if (!validate_pathname($file_parent)) {
 416                die_error(undef, "Invalid file parent parameter");
 417        }
 418}
 419
 420# parameters which are refnames
 421our $hash = $cgi->param('h');
 422if (defined $hash) {
 423        if (!validate_refname($hash)) {
 424                die_error(undef, "Invalid hash parameter");
 425        }
 426}
 427
 428our $hash_parent = $cgi->param('hp');
 429if (defined $hash_parent) {
 430        if (!validate_refname($hash_parent)) {
 431                die_error(undef, "Invalid hash parent parameter");
 432        }
 433}
 434
 435our $hash_base = $cgi->param('hb');
 436if (defined $hash_base) {
 437        if (!validate_refname($hash_base)) {
 438                die_error(undef, "Invalid hash base parameter");
 439        }
 440}
 441
 442my %allowed_options = (
 443        "--no-merges" => [ qw(rss atom log shortlog history) ],
 444);
 445
 446our @extra_options = $cgi->param('opt');
 447if (defined @extra_options) {
 448        foreach my $opt (@extra_options) {
 449                if (not exists $allowed_options{$opt}) {
 450                        die_error(undef, "Invalid option parameter");
 451                }
 452                if (not grep(/^$action$/, @{$allowed_options{$opt}})) {
 453                        die_error(undef, "Invalid option parameter for this action");
 454                }
 455        }
 456}
 457
 458our $hash_parent_base = $cgi->param('hpb');
 459if (defined $hash_parent_base) {
 460        if (!validate_refname($hash_parent_base)) {
 461                die_error(undef, "Invalid hash parent base parameter");
 462        }
 463}
 464
 465# other parameters
 466our $page = $cgi->param('pg');
 467if (defined $page) {
 468        if ($page =~ m/[^0-9]/) {
 469                die_error(undef, "Invalid page parameter");
 470        }
 471}
 472
 473our $searchtype = $cgi->param('st');
 474if (defined $searchtype) {
 475        if ($searchtype =~ m/[^a-z]/) {
 476                die_error(undef, "Invalid searchtype parameter");
 477        }
 478}
 479
 480our $search_use_regexp = $cgi->param('sr');
 481
 482our $searchtext = $cgi->param('s');
 483our $search_regexp;
 484if (defined $searchtext) {
 485        if (length($searchtext) < 2) {
 486                die_error(undef, "At least two characters are required for search parameter");
 487        }
 488        $search_regexp = $search_use_regexp ? $searchtext : quotemeta $searchtext;
 489}
 490
 491# now read PATH_INFO and use it as alternative to parameters
 492sub evaluate_path_info {
 493        return if defined $project;
 494        my $path_info = $ENV{"PATH_INFO"};
 495        return if !$path_info;
 496        $path_info =~ s,^/+,,;
 497        return if !$path_info;
 498        # find which part of PATH_INFO is project
 499        $project = $path_info;
 500        $project =~ s,/+$,,;
 501        while ($project && !check_head_link("$projectroot/$project")) {
 502                $project =~ s,/*[^/]*$,,;
 503        }
 504        # validate project
 505        $project = validate_pathname($project);
 506        if (!$project ||
 507            ($export_ok && !-e "$projectroot/$project/$export_ok") ||
 508            ($strict_export && !project_in_list($project))) {
 509                undef $project;
 510                return;
 511        }
 512        # do not change any parameters if an action is given using the query string
 513        return if $action;
 514        $path_info =~ s,^\Q$project\E/*,,;
 515        my ($refname, $pathname) = split(/:/, $path_info, 2);
 516        if (defined $pathname) {
 517                # we got "project.git/branch:filename" or "project.git/branch:dir/"
 518                # we could use git_get_type(branch:pathname), but it needs $git_dir
 519                $pathname =~ s,^/+,,;
 520                if (!$pathname || substr($pathname, -1) eq "/") {
 521                        $action  ||= "tree";
 522                        $pathname =~ s,/$,,;
 523                } else {
 524                        $action  ||= "blob_plain";
 525                }
 526                $hash_base ||= validate_refname($refname);
 527                $file_name ||= validate_pathname($pathname);
 528        } elsif (defined $refname) {
 529                # we got "project.git/branch"
 530                $action ||= "shortlog";
 531                $hash   ||= validate_refname($refname);
 532        }
 533}
 534evaluate_path_info();
 535
 536# path to the current git repository
 537our $git_dir;
 538$git_dir = "$projectroot/$project" if $project;
 539
 540# dispatch
 541my %actions = (
 542        "blame" => \&git_blame2,
 543        "blobdiff" => \&git_blobdiff,
 544        "blobdiff_plain" => \&git_blobdiff_plain,
 545        "blob" => \&git_blob,
 546        "blob_plain" => \&git_blob_plain,
 547        "commitdiff" => \&git_commitdiff,
 548        "commitdiff_plain" => \&git_commitdiff_plain,
 549        "commit" => \&git_commit,
 550        "forks" => \&git_forks,
 551        "heads" => \&git_heads,
 552        "history" => \&git_history,
 553        "log" => \&git_log,
 554        "rss" => \&git_rss,
 555        "atom" => \&git_atom,
 556        "search" => \&git_search,
 557        "search_help" => \&git_search_help,
 558        "shortlog" => \&git_shortlog,
 559        "summary" => \&git_summary,
 560        "tag" => \&git_tag,
 561        "tags" => \&git_tags,
 562        "tree" => \&git_tree,
 563        "snapshot" => \&git_snapshot,
 564        "object" => \&git_object,
 565        # those below don't need $project
 566        "opml" => \&git_opml,
 567        "project_list" => \&git_project_list,
 568        "project_index" => \&git_project_index,
 569);
 570
 571if (!defined $action) {
 572        if (defined $hash) {
 573                $action = git_get_type($hash);
 574        } elsif (defined $hash_base && defined $file_name) {
 575                $action = git_get_type("$hash_base:$file_name");
 576        } elsif (defined $project) {
 577                $action = 'summary';
 578        } else {
 579                $action = 'project_list';
 580        }
 581}
 582if (!defined($actions{$action})) {
 583        die_error(undef, "Unknown action");
 584}
 585if ($action !~ m/^(opml|project_list|project_index)$/ &&
 586    !$project) {
 587        die_error(undef, "Project needed");
 588}
 589$actions{$action}->();
 590exit;
 591
 592## ======================================================================
 593## action links
 594
 595sub href (%) {
 596        my %params = @_;
 597        # default is to use -absolute url() i.e. $my_uri
 598        my $href = $params{-full} ? $my_url : $my_uri;
 599
 600        # XXX: Warning: If you touch this, check the search form for updating,
 601        # too.
 602
 603        my @mapping = (
 604                project => "p",
 605                action => "a",
 606                file_name => "f",
 607                file_parent => "fp",
 608                hash => "h",
 609                hash_parent => "hp",
 610                hash_base => "hb",
 611                hash_parent_base => "hpb",
 612                page => "pg",
 613                order => "o",
 614                searchtext => "s",
 615                searchtype => "st",
 616                snapshot_format => "sf",
 617                extra_options => "opt",
 618                search_use_regexp => "sr",
 619        );
 620        my %mapping = @mapping;
 621
 622        $params{'project'} = $project unless exists $params{'project'};
 623
 624        if ($params{-replay}) {
 625                while (my ($name, $symbol) = each %mapping) {
 626                        if (!exists $params{$name}) {
 627                                # to allow for multivalued params we use arrayref form
 628                                $params{$name} = [ $cgi->param($symbol) ];
 629                        }
 630                }
 631        }
 632
 633        my ($use_pathinfo) = gitweb_check_feature('pathinfo');
 634        if ($use_pathinfo) {
 635                # use PATH_INFO for project name
 636                $href .= "/".esc_url($params{'project'}) if defined $params{'project'};
 637                delete $params{'project'};
 638
 639                # Summary just uses the project path URL
 640                if (defined $params{'action'} && $params{'action'} eq 'summary') {
 641                        delete $params{'action'};
 642                }
 643        }
 644
 645        # now encode the parameters explicitly
 646        my @result = ();
 647        for (my $i = 0; $i < @mapping; $i += 2) {
 648                my ($name, $symbol) = ($mapping[$i], $mapping[$i+1]);
 649                if (defined $params{$name}) {
 650                        if (ref($params{$name}) eq "ARRAY") {
 651                                foreach my $par (@{$params{$name}}) {
 652                                        push @result, $symbol . "=" . esc_param($par);
 653                                }
 654                        } else {
 655                                push @result, $symbol . "=" . esc_param($params{$name});
 656                        }
 657                }
 658        }
 659        $href .= "?" . join(';', @result) if scalar @result;
 660
 661        return $href;
 662}
 663
 664
 665## ======================================================================
 666## validation, quoting/unquoting and escaping
 667
 668sub validate_pathname {
 669        my $input = shift || return undef;
 670
 671        # no '.' or '..' as elements of path, i.e. no '.' nor '..'
 672        # at the beginning, at the end, and between slashes.
 673        # also this catches doubled slashes
 674        if ($input =~ m!(^|/)(|\.|\.\.)(/|$)!) {
 675                return undef;
 676        }
 677        # no null characters
 678        if ($input =~ m!\0!) {
 679                return undef;
 680        }
 681        return $input;
 682}
 683
 684sub validate_refname {
 685        my $input = shift || return undef;
 686
 687        # textual hashes are O.K.
 688        if ($input =~ m/^[0-9a-fA-F]{40}$/) {
 689                return $input;
 690        }
 691        # it must be correct pathname
 692        $input = validate_pathname($input)
 693                or return undef;
 694        # restrictions on ref name according to git-check-ref-format
 695        if ($input =~ m!(/\.|\.\.|[\000-\040\177 ~^:?*\[]|/$)!) {
 696                return undef;
 697        }
 698        return $input;
 699}
 700
 701# decode sequences of octets in utf8 into Perl's internal form,
 702# which is utf-8 with utf8 flag set if needed.  gitweb writes out
 703# in utf-8 thanks to "binmode STDOUT, ':utf8'" at beginning
 704sub to_utf8 {
 705        my $str = shift;
 706        if (utf8::valid($str)) {
 707                utf8::decode($str);
 708                return $str;
 709        } else {
 710                return decode($fallback_encoding, $str, Encode::FB_DEFAULT);
 711        }
 712}
 713
 714# quote unsafe chars, but keep the slash, even when it's not
 715# correct, but quoted slashes look too horrible in bookmarks
 716sub esc_param {
 717        my $str = shift;
 718        $str =~ s/([^A-Za-z0-9\-_.~()\/:@])/sprintf("%%%02X", ord($1))/eg;
 719        $str =~ s/\+/%2B/g;
 720        $str =~ s/ /\+/g;
 721        return $str;
 722}
 723
 724# quote unsafe chars in whole URL, so some charactrs cannot be quoted
 725sub esc_url {
 726        my $str = shift;
 727        $str =~ s/([^A-Za-z0-9\-_.~();\/;?:@&=])/sprintf("%%%02X", ord($1))/eg;
 728        $str =~ s/\+/%2B/g;
 729        $str =~ s/ /\+/g;
 730        return $str;
 731}
 732
 733# replace invalid utf8 character with SUBSTITUTION sequence
 734sub esc_html ($;%) {
 735        my $str = shift;
 736        my %opts = @_;
 737
 738        $str = to_utf8($str);
 739        $str = $cgi->escapeHTML($str);
 740        if ($opts{'-nbsp'}) {
 741                $str =~ s/ /&nbsp;/g;
 742        }
 743        $str =~ s|([[:cntrl:]])|(($1 ne "\t") ? quot_cec($1) : $1)|eg;
 744        return $str;
 745}
 746
 747# quote control characters and escape filename to HTML
 748sub esc_path {
 749        my $str = shift;
 750        my %opts = @_;
 751
 752        $str = to_utf8($str);
 753        $str = $cgi->escapeHTML($str);
 754        if ($opts{'-nbsp'}) {
 755                $str =~ s/ /&nbsp;/g;
 756        }
 757        $str =~ s|([[:cntrl:]])|quot_cec($1)|eg;
 758        return $str;
 759}
 760
 761# Make control characters "printable", using character escape codes (CEC)
 762sub quot_cec {
 763        my $cntrl = shift;
 764        my %opts = @_;
 765        my %es = ( # character escape codes, aka escape sequences
 766                "\t" => '\t',   # tab            (HT)
 767                "\n" => '\n',   # line feed      (LF)
 768                "\r" => '\r',   # carrige return (CR)
 769                "\f" => '\f',   # form feed      (FF)
 770                "\b" => '\b',   # backspace      (BS)
 771                "\a" => '\a',   # alarm (bell)   (BEL)
 772                "\e" => '\e',   # escape         (ESC)
 773                "\013" => '\v', # vertical tab   (VT)
 774                "\000" => '\0', # nul character  (NUL)
 775        );
 776        my $chr = ( (exists $es{$cntrl})
 777                    ? $es{$cntrl}
 778                    : sprintf('\%03o', ord($cntrl)) );
 779        if ($opts{-nohtml}) {
 780                return $chr;
 781        } else {
 782                return "<span class=\"cntrl\">$chr</span>";
 783        }
 784}
 785
 786# Alternatively use unicode control pictures codepoints,
 787# Unicode "printable representation" (PR)
 788sub quot_upr {
 789        my $cntrl = shift;
 790        my %opts = @_;
 791
 792        my $chr = sprintf('&#%04d;', 0x2400+ord($cntrl));
 793        if ($opts{-nohtml}) {
 794                return $chr;
 795        } else {
 796                return "<span class=\"cntrl\">$chr</span>";
 797        }
 798}
 799
 800# git may return quoted and escaped filenames
 801sub unquote {
 802        my $str = shift;
 803
 804        sub unq {
 805                my $seq = shift;
 806                my %es = ( # character escape codes, aka escape sequences
 807                        't' => "\t",   # tab            (HT, TAB)
 808                        'n' => "\n",   # newline        (NL)
 809                        'r' => "\r",   # return         (CR)
 810                        'f' => "\f",   # form feed      (FF)
 811                        'b' => "\b",   # backspace      (BS)
 812                        'a' => "\a",   # alarm (bell)   (BEL)
 813                        'e' => "\e",   # escape         (ESC)
 814                        'v' => "\013", # vertical tab   (VT)
 815                );
 816
 817                if ($seq =~ m/^[0-7]{1,3}$/) {
 818                        # octal char sequence
 819                        return chr(oct($seq));
 820                } elsif (exists $es{$seq}) {
 821                        # C escape sequence, aka character escape code
 822                        return $es{$seq};
 823                }
 824                # quoted ordinary character
 825                return $seq;
 826        }
 827
 828        if ($str =~ m/^"(.*)"$/) {
 829                # needs unquoting
 830                $str = $1;
 831                $str =~ s/\\([^0-7]|[0-7]{1,3})/unq($1)/eg;
 832        }
 833        return $str;
 834}
 835
 836# escape tabs (convert tabs to spaces)
 837sub untabify {
 838        my $line = shift;
 839
 840        while ((my $pos = index($line, "\t")) != -1) {
 841                if (my $count = (8 - ($pos % 8))) {
 842                        my $spaces = ' ' x $count;
 843                        $line =~ s/\t/$spaces/;
 844                }
 845        }
 846
 847        return $line;
 848}
 849
 850sub project_in_list {
 851        my $project = shift;
 852        my @list = git_get_projects_list();
 853        return @list && scalar(grep { $_->{'path'} eq $project } @list);
 854}
 855
 856## ----------------------------------------------------------------------
 857## HTML aware string manipulation
 858
 859# Try to chop given string on a word boundary between position
 860# $len and $len+$add_len. If there is no word boundary there,
 861# chop at $len+$add_len. Do not chop if chopped part plus ellipsis
 862# (marking chopped part) would be longer than given string.
 863sub chop_str {
 864        my $str = shift;
 865        my $len = shift;
 866        my $add_len = shift || 10;
 867        my $where = shift || 'right'; # 'left' | 'center' | 'right'
 868
 869        # Make sure perl knows it is utf8 encoded so we don't
 870        # cut in the middle of a utf8 multibyte char.
 871        $str = to_utf8($str);
 872
 873        # allow only $len chars, but don't cut a word if it would fit in $add_len
 874        # if it doesn't fit, cut it if it's still longer than the dots we would add
 875        # remove chopped character entities entirely
 876
 877        # when chopping in the middle, distribute $len into left and right part
 878        # return early if chopping wouldn't make string shorter
 879        if ($where eq 'center') {
 880                return $str if ($len + 5 >= length($str)); # filler is length 5
 881                $len = int($len/2);
 882        } else {
 883                return $str if ($len + 4 >= length($str)); # filler is length 4
 884        }
 885
 886        # regexps: ending and beginning with word part up to $add_len
 887        my $endre = qr/.{$len}\w{0,$add_len}/;
 888        my $begre = qr/\w{0,$add_len}.{$len}/;
 889
 890        if ($where eq 'left') {
 891                $str =~ m/^(.*?)($begre)$/;
 892                my ($lead, $body) = ($1, $2);
 893                if (length($lead) > 4) {
 894                        $body =~ s/^[^;]*;// if ($lead =~ m/&[^;]*$/);
 895                        $lead = " ...";
 896                }
 897                return "$lead$body";
 898
 899        } elsif ($where eq 'center') {
 900                $str =~ m/^($endre)(.*)$/;
 901                my ($left, $str)  = ($1, $2);
 902                $str =~ m/^(.*?)($begre)$/;
 903                my ($mid, $right) = ($1, $2);
 904                if (length($mid) > 5) {
 905                        $left  =~ s/&[^;]*$//;
 906                        $right =~ s/^[^;]*;// if ($mid =~ m/&[^;]*$/);
 907                        $mid = " ... ";
 908                }
 909                return "$left$mid$right";
 910
 911        } else {
 912                $str =~ m/^($endre)(.*)$/;
 913                my $body = $1;
 914                my $tail = $2;
 915                if (length($tail) > 4) {
 916                        $body =~ s/&[^;]*$//;
 917                        $tail = "... ";
 918                }
 919                return "$body$tail";
 920        }
 921}
 922
 923# takes the same arguments as chop_str, but also wraps a <span> around the
 924# result with a title attribute if it does get chopped. Additionally, the
 925# string is HTML-escaped.
 926sub chop_and_escape_str {
 927        my ($str) = @_;
 928
 929        my $chopped = chop_str(@_);
 930        if ($chopped eq $str) {
 931                return esc_html($chopped);
 932        } else {
 933                $str =~ s/([[:cntrl:]])/?/g;
 934                return $cgi->span({-title=>$str}, esc_html($chopped));
 935        }
 936}
 937
 938## ----------------------------------------------------------------------
 939## functions returning short strings
 940
 941# CSS class for given age value (in seconds)
 942sub age_class {
 943        my $age = shift;
 944
 945        if (!defined $age) {
 946                return "noage";
 947        } elsif ($age < 60*60*2) {
 948                return "age0";
 949        } elsif ($age < 60*60*24*2) {
 950                return "age1";
 951        } else {
 952                return "age2";
 953        }
 954}
 955
 956# convert age in seconds to "nn units ago" string
 957sub age_string {
 958        my $age = shift;
 959        my $age_str;
 960
 961        if ($age > 60*60*24*365*2) {
 962                $age_str = (int $age/60/60/24/365);
 963                $age_str .= " years ago";
 964        } elsif ($age > 60*60*24*(365/12)*2) {
 965                $age_str = int $age/60/60/24/(365/12);
 966                $age_str .= " months ago";
 967        } elsif ($age > 60*60*24*7*2) {
 968                $age_str = int $age/60/60/24/7;
 969                $age_str .= " weeks ago";
 970        } elsif ($age > 60*60*24*2) {
 971                $age_str = int $age/60/60/24;
 972                $age_str .= " days ago";
 973        } elsif ($age > 60*60*2) {
 974                $age_str = int $age/60/60;
 975                $age_str .= " hours ago";
 976        } elsif ($age > 60*2) {
 977                $age_str = int $age/60;
 978                $age_str .= " min ago";
 979        } elsif ($age > 2) {
 980                $age_str = int $age;
 981                $age_str .= " sec ago";
 982        } else {
 983                $age_str .= " right now";
 984        }
 985        return $age_str;
 986}
 987
 988use constant {
 989        S_IFINVALID => 0030000,
 990        S_IFGITLINK => 0160000,
 991};
 992
 993# submodule/subproject, a commit object reference
 994sub S_ISGITLINK($) {
 995        my $mode = shift;
 996
 997        return (($mode & S_IFMT) == S_IFGITLINK)
 998}
 999
1000# convert file mode in octal to symbolic file mode string
1001sub mode_str {
1002        my $mode = oct shift;
1003
1004        if (S_ISGITLINK($mode)) {
1005                return 'm---------';
1006        } elsif (S_ISDIR($mode & S_IFMT)) {
1007                return 'drwxr-xr-x';
1008        } elsif (S_ISLNK($mode)) {
1009                return 'lrwxrwxrwx';
1010        } elsif (S_ISREG($mode)) {
1011                # git cares only about the executable bit
1012                if ($mode & S_IXUSR) {
1013                        return '-rwxr-xr-x';
1014                } else {
1015                        return '-rw-r--r--';
1016                };
1017        } else {
1018                return '----------';
1019        }
1020}
1021
1022# convert file mode in octal to file type string
1023sub file_type {
1024        my $mode = shift;
1025
1026        if ($mode !~ m/^[0-7]+$/) {
1027                return $mode;
1028        } else {
1029                $mode = oct $mode;
1030        }
1031
1032        if (S_ISGITLINK($mode)) {
1033                return "submodule";
1034        } elsif (S_ISDIR($mode & S_IFMT)) {
1035                return "directory";
1036        } elsif (S_ISLNK($mode)) {
1037                return "symlink";
1038        } elsif (S_ISREG($mode)) {
1039                return "file";
1040        } else {
1041                return "unknown";
1042        }
1043}
1044
1045# convert file mode in octal to file type description string
1046sub file_type_long {
1047        my $mode = shift;
1048
1049        if ($mode !~ m/^[0-7]+$/) {
1050                return $mode;
1051        } else {
1052                $mode = oct $mode;
1053        }
1054
1055        if (S_ISGITLINK($mode)) {
1056                return "submodule";
1057        } elsif (S_ISDIR($mode & S_IFMT)) {
1058                return "directory";
1059        } elsif (S_ISLNK($mode)) {
1060                return "symlink";
1061        } elsif (S_ISREG($mode)) {
1062                if ($mode & S_IXUSR) {
1063                        return "executable";
1064                } else {
1065                        return "file";
1066                };
1067        } else {
1068                return "unknown";
1069        }
1070}
1071
1072
1073## ----------------------------------------------------------------------
1074## functions returning short HTML fragments, or transforming HTML fragments
1075## which don't belong to other sections
1076
1077# format line of commit message.
1078sub format_log_line_html {
1079        my $line = shift;
1080
1081        $line = esc_html($line, -nbsp=>1);
1082        if ($line =~ m/([0-9a-fA-F]{8,40})/) {
1083                my $hash_text = $1;
1084                my $link =
1085                        $cgi->a({-href => href(action=>"object", hash=>$hash_text),
1086                                -class => "text"}, $hash_text);
1087                $line =~ s/$hash_text/$link/;
1088        }
1089        return $line;
1090}
1091
1092# format marker of refs pointing to given object
1093sub format_ref_marker {
1094        my ($refs, $id) = @_;
1095        my $markers = '';
1096
1097        if (defined $refs->{$id}) {
1098                foreach my $ref (@{$refs->{$id}}) {
1099                        my ($type, $name) = qw();
1100                        # e.g. tags/v2.6.11 or heads/next
1101                        if ($ref =~ m!^(.*?)s?/(.*)$!) {
1102                                $type = $1;
1103                                $name = $2;
1104                        } else {
1105                                $type = "ref";
1106                                $name = $ref;
1107                        }
1108
1109                        $markers .= " <span class=\"$type\" title=\"$ref\">" .
1110                                    esc_html($name) . "</span>";
1111                }
1112        }
1113
1114        if ($markers) {
1115                return ' <span class="refs">'. $markers . '</span>';
1116        } else {
1117                return "";
1118        }
1119}
1120
1121# format, perhaps shortened and with markers, title line
1122sub format_subject_html {
1123        my ($long, $short, $href, $extra) = @_;
1124        $extra = '' unless defined($extra);
1125
1126        if (length($short) < length($long)) {
1127                return $cgi->a({-href => $href, -class => "list subject",
1128                                -title => to_utf8($long)},
1129                       esc_html($short) . $extra);
1130        } else {
1131                return $cgi->a({-href => $href, -class => "list subject"},
1132                       esc_html($long)  . $extra);
1133        }
1134}
1135
1136# format git diff header line, i.e. "diff --(git|combined|cc) ..."
1137sub format_git_diff_header_line {
1138        my $line = shift;
1139        my $diffinfo = shift;
1140        my ($from, $to) = @_;
1141
1142        if ($diffinfo->{'nparents'}) {
1143                # combined diff
1144                $line =~ s!^(diff (.*?) )"?.*$!$1!;
1145                if ($to->{'href'}) {
1146                        $line .= $cgi->a({-href => $to->{'href'}, -class => "path"},
1147                                         esc_path($to->{'file'}));
1148                } else { # file was deleted (no href)
1149                        $line .= esc_path($to->{'file'});
1150                }
1151        } else {
1152                # "ordinary" diff
1153                $line =~ s!^(diff (.*?) )"?a/.*$!$1!;
1154                if ($from->{'href'}) {
1155                        $line .= $cgi->a({-href => $from->{'href'}, -class => "path"},
1156                                         'a/' . esc_path($from->{'file'}));
1157                } else { # file was added (no href)
1158                        $line .= 'a/' . esc_path($from->{'file'});
1159                }
1160                $line .= ' ';
1161                if ($to->{'href'}) {
1162                        $line .= $cgi->a({-href => $to->{'href'}, -class => "path"},
1163                                         'b/' . esc_path($to->{'file'}));
1164                } else { # file was deleted
1165                        $line .= 'b/' . esc_path($to->{'file'});
1166                }
1167        }
1168
1169        return "<div class=\"diff header\">$line</div>\n";
1170}
1171
1172# format extended diff header line, before patch itself
1173sub format_extended_diff_header_line {
1174        my $line = shift;
1175        my $diffinfo = shift;
1176        my ($from, $to) = @_;
1177
1178        # match <path>
1179        if ($line =~ s!^((copy|rename) from ).*$!$1! && $from->{'href'}) {
1180                $line .= $cgi->a({-href=>$from->{'href'}, -class=>"path"},
1181                                       esc_path($from->{'file'}));
1182        }
1183        if ($line =~ s!^((copy|rename) to ).*$!$1! && $to->{'href'}) {
1184                $line .= $cgi->a({-href=>$to->{'href'}, -class=>"path"},
1185                                 esc_path($to->{'file'}));
1186        }
1187        # match single <mode>
1188        if ($line =~ m/\s(\d{6})$/) {
1189                $line .= '<span class="info"> (' .
1190                         file_type_long($1) .
1191                         ')</span>';
1192        }
1193        # match <hash>
1194        if ($line =~ m/^index [0-9a-fA-F]{40},[0-9a-fA-F]{40}/) {
1195                # can match only for combined diff
1196                $line = 'index ';
1197                for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
1198                        if ($from->{'href'}[$i]) {
1199                                $line .= $cgi->a({-href=>$from->{'href'}[$i],
1200                                                  -class=>"hash"},
1201                                                 substr($diffinfo->{'from_id'}[$i],0,7));
1202                        } else {
1203                                $line .= '0' x 7;
1204                        }
1205                        # separator
1206                        $line .= ',' if ($i < $diffinfo->{'nparents'} - 1);
1207                }
1208                $line .= '..';
1209                if ($to->{'href'}) {
1210                        $line .= $cgi->a({-href=>$to->{'href'}, -class=>"hash"},
1211                                         substr($diffinfo->{'to_id'},0,7));
1212                } else {
1213                        $line .= '0' x 7;
1214                }
1215
1216        } elsif ($line =~ m/^index [0-9a-fA-F]{40}..[0-9a-fA-F]{40}/) {
1217                # can match only for ordinary diff
1218                my ($from_link, $to_link);
1219                if ($from->{'href'}) {
1220                        $from_link = $cgi->a({-href=>$from->{'href'}, -class=>"hash"},
1221                                             substr($diffinfo->{'from_id'},0,7));
1222                } else {
1223                        $from_link = '0' x 7;
1224                }
1225                if ($to->{'href'}) {
1226                        $to_link = $cgi->a({-href=>$to->{'href'}, -class=>"hash"},
1227                                           substr($diffinfo->{'to_id'},0,7));
1228                } else {
1229                        $to_link = '0' x 7;
1230                }
1231                my ($from_id, $to_id) = ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
1232                $line =~ s!$from_id\.\.$to_id!$from_link..$to_link!;
1233        }
1234
1235        return $line . "<br/>\n";
1236}
1237
1238# format from-file/to-file diff header
1239sub format_diff_from_to_header {
1240        my ($from_line, $to_line, $diffinfo, $from, $to, @parents) = @_;
1241        my $line;
1242        my $result = '';
1243
1244        $line = $from_line;
1245        #assert($line =~ m/^---/) if DEBUG;
1246        # no extra formatting for "^--- /dev/null"
1247        if (! $diffinfo->{'nparents'}) {
1248                # ordinary (single parent) diff
1249                if ($line =~ m!^--- "?a/!) {
1250                        if ($from->{'href'}) {
1251                                $line = '--- a/' .
1252                                        $cgi->a({-href=>$from->{'href'}, -class=>"path"},
1253                                                esc_path($from->{'file'}));
1254                        } else {
1255                                $line = '--- a/' .
1256                                        esc_path($from->{'file'});
1257                        }
1258                }
1259                $result .= qq!<div class="diff from_file">$line</div>\n!;
1260
1261        } else {
1262                # combined diff (merge commit)
1263                for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
1264                        if ($from->{'href'}[$i]) {
1265                                $line = '--- ' .
1266                                        $cgi->a({-href=>href(action=>"blobdiff",
1267                                                             hash_parent=>$diffinfo->{'from_id'}[$i],
1268                                                             hash_parent_base=>$parents[$i],
1269                                                             file_parent=>$from->{'file'}[$i],
1270                                                             hash=>$diffinfo->{'to_id'},
1271                                                             hash_base=>$hash,
1272                                                             file_name=>$to->{'file'}),
1273                                                 -class=>"path",
1274                                                 -title=>"diff" . ($i+1)},
1275                                                $i+1) .
1276                                        '/' .
1277                                        $cgi->a({-href=>$from->{'href'}[$i], -class=>"path"},
1278                                                esc_path($from->{'file'}[$i]));
1279                        } else {
1280                                $line = '--- /dev/null';
1281                        }
1282                        $result .= qq!<div class="diff from_file">$line</div>\n!;
1283                }
1284        }
1285
1286        $line = $to_line;
1287        #assert($line =~ m/^\+\+\+/) if DEBUG;
1288        # no extra formatting for "^+++ /dev/null"
1289        if ($line =~ m!^\+\+\+ "?b/!) {
1290                if ($to->{'href'}) {
1291                        $line = '+++ b/' .
1292                                $cgi->a({-href=>$to->{'href'}, -class=>"path"},
1293                                        esc_path($to->{'file'}));
1294                } else {
1295                        $line = '+++ b/' .
1296                                esc_path($to->{'file'});
1297                }
1298        }
1299        $result .= qq!<div class="diff to_file">$line</div>\n!;
1300
1301        return $result;
1302}
1303
1304# create note for patch simplified by combined diff
1305sub format_diff_cc_simplified {
1306        my ($diffinfo, @parents) = @_;
1307        my $result = '';
1308
1309        $result .= "<div class=\"diff header\">" .
1310                   "diff --cc ";
1311        if (!is_deleted($diffinfo)) {
1312                $result .= $cgi->a({-href => href(action=>"blob",
1313                                                  hash_base=>$hash,
1314                                                  hash=>$diffinfo->{'to_id'},
1315                                                  file_name=>$diffinfo->{'to_file'}),
1316                                    -class => "path"},
1317                                   esc_path($diffinfo->{'to_file'}));
1318        } else {
1319                $result .= esc_path($diffinfo->{'to_file'});
1320        }
1321        $result .= "</div>\n" . # class="diff header"
1322                   "<div class=\"diff nodifferences\">" .
1323                   "Simple merge" .
1324                   "</div>\n"; # class="diff nodifferences"
1325
1326        return $result;
1327}
1328
1329# format patch (diff) line (not to be used for diff headers)
1330sub format_diff_line {
1331        my $line = shift;
1332        my ($from, $to) = @_;
1333        my $diff_class = "";
1334
1335        chomp $line;
1336
1337        if ($from && $to && ref($from->{'href'}) eq "ARRAY") {
1338                # combined diff
1339                my $prefix = substr($line, 0, scalar @{$from->{'href'}});
1340                if ($line =~ m/^\@{3}/) {
1341                        $diff_class = " chunk_header";
1342                } elsif ($line =~ m/^\\/) {
1343                        $diff_class = " incomplete";
1344                } elsif ($prefix =~ tr/+/+/) {
1345                        $diff_class = " add";
1346                } elsif ($prefix =~ tr/-/-/) {
1347                        $diff_class = " rem";
1348                }
1349        } else {
1350                # assume ordinary diff
1351                my $char = substr($line, 0, 1);
1352                if ($char eq '+') {
1353                        $diff_class = " add";
1354                } elsif ($char eq '-') {
1355                        $diff_class = " rem";
1356                } elsif ($char eq '@') {
1357                        $diff_class = " chunk_header";
1358                } elsif ($char eq "\\") {
1359                        $diff_class = " incomplete";
1360                }
1361        }
1362        $line = untabify($line);
1363        if ($from && $to && $line =~ m/^\@{2} /) {
1364                my ($from_text, $from_start, $from_lines, $to_text, $to_start, $to_lines, $section) =
1365                        $line =~ m/^\@{2} (-(\d+)(?:,(\d+))?) (\+(\d+)(?:,(\d+))?) \@{2}(.*)$/;
1366
1367                $from_lines = 0 unless defined $from_lines;
1368                $to_lines   = 0 unless defined $to_lines;
1369
1370                if ($from->{'href'}) {
1371                        $from_text = $cgi->a({-href=>"$from->{'href'}#l$from_start",
1372                                             -class=>"list"}, $from_text);
1373                }
1374                if ($to->{'href'}) {
1375                        $to_text   = $cgi->a({-href=>"$to->{'href'}#l$to_start",
1376                                             -class=>"list"}, $to_text);
1377                }
1378                $line = "<span class=\"chunk_info\">@@ $from_text $to_text @@</span>" .
1379                        "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
1380                return "<div class=\"diff$diff_class\">$line</div>\n";
1381        } elsif ($from && $to && $line =~ m/^\@{3}/) {
1382                my ($prefix, $ranges, $section) = $line =~ m/^(\@+) (.*?) \@+(.*)$/;
1383                my (@from_text, @from_start, @from_nlines, $to_text, $to_start, $to_nlines);
1384
1385                @from_text = split(' ', $ranges);
1386                for (my $i = 0; $i < @from_text; ++$i) {
1387                        ($from_start[$i], $from_nlines[$i]) =
1388                                (split(',', substr($from_text[$i], 1)), 0);
1389                }
1390
1391                $to_text   = pop @from_text;
1392                $to_start  = pop @from_start;
1393                $to_nlines = pop @from_nlines;
1394
1395                $line = "<span class=\"chunk_info\">$prefix ";
1396                for (my $i = 0; $i < @from_text; ++$i) {
1397                        if ($from->{'href'}[$i]) {
1398                                $line .= $cgi->a({-href=>"$from->{'href'}[$i]#l$from_start[$i]",
1399                                                  -class=>"list"}, $from_text[$i]);
1400                        } else {
1401                                $line .= $from_text[$i];
1402                        }
1403                        $line .= " ";
1404                }
1405                if ($to->{'href'}) {
1406                        $line .= $cgi->a({-href=>"$to->{'href'}#l$to_start",
1407                                          -class=>"list"}, $to_text);
1408                } else {
1409                        $line .= $to_text;
1410                }
1411                $line .= " $prefix</span>" .
1412                         "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
1413                return "<div class=\"diff$diff_class\">$line</div>\n";
1414        }
1415        return "<div class=\"diff$diff_class\">" . esc_html($line, -nbsp=>1) . "</div>\n";
1416}
1417
1418# Generates undef or something like "_snapshot_" or "snapshot (_tbz2_ _zip_)",
1419# linked.  Pass the hash of the tree/commit to snapshot.
1420sub format_snapshot_links {
1421        my ($hash) = @_;
1422        my @snapshot_fmts = gitweb_check_feature('snapshot');
1423        @snapshot_fmts = filter_snapshot_fmts(@snapshot_fmts);
1424        my $num_fmts = @snapshot_fmts;
1425        if ($num_fmts > 1) {
1426                # A parenthesized list of links bearing format names.
1427                # e.g. "snapshot (_tar.gz_ _zip_)"
1428                return "snapshot (" . join(' ', map
1429                        $cgi->a({
1430                                -href => href(
1431                                        action=>"snapshot",
1432                                        hash=>$hash,
1433                                        snapshot_format=>$_
1434                                )
1435                        }, $known_snapshot_formats{$_}{'display'})
1436                , @snapshot_fmts) . ")";
1437        } elsif ($num_fmts == 1) {
1438                # A single "snapshot" link whose tooltip bears the format name.
1439                # i.e. "_snapshot_"
1440                my ($fmt) = @snapshot_fmts;
1441                return
1442                        $cgi->a({
1443                                -href => href(
1444                                        action=>"snapshot",
1445                                        hash=>$hash,
1446                                        snapshot_format=>$fmt
1447                                ),
1448                                -title => "in format: $known_snapshot_formats{$fmt}{'display'}"
1449                        }, "snapshot");
1450        } else { # $num_fmts == 0
1451                return undef;
1452        }
1453}
1454
1455## ......................................................................
1456## functions returning values to be passed, perhaps after some
1457## transformation, to other functions; e.g. returning arguments to href()
1458
1459# returns hash to be passed to href to generate gitweb URL
1460# in -title key it returns description of link
1461sub get_feed_info {
1462        my $format = shift || 'Atom';
1463        my %res = (action => lc($format));
1464
1465        # feed links are possible only for project views
1466        return unless (defined $project);
1467        # some views should link to OPML, or to generic project feed,
1468        # or don't have specific feed yet (so they should use generic)
1469        return if ($action =~ /^(?:tags|heads|forks|tag|search)$/x);
1470
1471        my $branch;
1472        # branches refs uses 'refs/heads/' prefix (fullname) to differentiate
1473        # from tag links; this also makes possible to detect branch links
1474        if ((defined $hash_base && $hash_base =~ m!^refs/heads/(.*)$!) ||
1475            (defined $hash      && $hash      =~ m!^refs/heads/(.*)$!)) {
1476                $branch = $1;
1477        }
1478        # find log type for feed description (title)
1479        my $type = 'log';
1480        if (defined $file_name) {
1481                $type  = "history of $file_name";
1482                $type .= "/" if ($action eq 'tree');
1483                $type .= " on '$branch'" if (defined $branch);
1484        } else {
1485                $type = "log of $branch" if (defined $branch);
1486        }
1487
1488        $res{-title} = $type;
1489        $res{'hash'} = (defined $branch ? "refs/heads/$branch" : undef);
1490        $res{'file_name'} = $file_name;
1491
1492        return %res;
1493}
1494
1495## ----------------------------------------------------------------------
1496## git utility subroutines, invoking git commands
1497
1498# returns path to the core git executable and the --git-dir parameter as list
1499sub git_cmd {
1500        return $GIT, '--git-dir='.$git_dir;
1501}
1502
1503# returns path to the core git executable and the --git-dir parameter as string
1504sub git_cmd_str {
1505        return join(' ', git_cmd());
1506}
1507
1508# get HEAD ref of given project as hash
1509sub git_get_head_hash {
1510        my $project = shift;
1511        my $o_git_dir = $git_dir;
1512        my $retval = undef;
1513        $git_dir = "$projectroot/$project";
1514        if (open my $fd, "-|", git_cmd(), "rev-parse", "--verify", "HEAD") {
1515                my $head = <$fd>;
1516                close $fd;
1517                if (defined $head && $head =~ /^([0-9a-fA-F]{40})$/) {
1518                        $retval = $1;
1519                }
1520        }
1521        if (defined $o_git_dir) {
1522                $git_dir = $o_git_dir;
1523        }
1524        return $retval;
1525}
1526
1527# get type of given object
1528sub git_get_type {
1529        my $hash = shift;
1530
1531        open my $fd, "-|", git_cmd(), "cat-file", '-t', $hash or return;
1532        my $type = <$fd>;
1533        close $fd or return;
1534        chomp $type;
1535        return $type;
1536}
1537
1538# repository configuration
1539our $config_file = '';
1540our %config;
1541
1542# store multiple values for single key as anonymous array reference
1543# single values stored directly in the hash, not as [ <value> ]
1544sub hash_set_multi {
1545        my ($hash, $key, $value) = @_;
1546
1547        if (!exists $hash->{$key}) {
1548                $hash->{$key} = $value;
1549        } elsif (!ref $hash->{$key}) {
1550                $hash->{$key} = [ $hash->{$key}, $value ];
1551        } else {
1552                push @{$hash->{$key}}, $value;
1553        }
1554}
1555
1556# return hash of git project configuration
1557# optionally limited to some section, e.g. 'gitweb'
1558sub git_parse_project_config {
1559        my $section_regexp = shift;
1560        my %config;
1561
1562        local $/ = "\0";
1563
1564        open my $fh, "-|", git_cmd(), "config", '-z', '-l',
1565                or return;
1566
1567        while (my $keyval = <$fh>) {
1568                chomp $keyval;
1569                my ($key, $value) = split(/\n/, $keyval, 2);
1570
1571                hash_set_multi(\%config, $key, $value)
1572                        if (!defined $section_regexp || $key =~ /^(?:$section_regexp)\./o);
1573        }
1574        close $fh;
1575
1576        return %config;
1577}
1578
1579# convert config value to boolean, 'true' or 'false'
1580# no value, number > 0, 'true' and 'yes' values are true
1581# rest of values are treated as false (never as error)
1582sub config_to_bool {
1583        my $val = shift;
1584
1585        # strip leading and trailing whitespace
1586        $val =~ s/^\s+//;
1587        $val =~ s/\s+$//;
1588
1589        return (!defined $val ||               # section.key
1590                ($val =~ /^\d+$/ && $val) ||   # section.key = 1
1591                ($val =~ /^(?:true|yes)$/i));  # section.key = true
1592}
1593
1594# convert config value to simple decimal number
1595# an optional value suffix of 'k', 'm', or 'g' will cause the value
1596# to be multiplied by 1024, 1048576, or 1073741824
1597sub config_to_int {
1598        my $val = shift;
1599
1600        # strip leading and trailing whitespace
1601        $val =~ s/^\s+//;
1602        $val =~ s/\s+$//;
1603
1604        if (my ($num, $unit) = ($val =~ /^([0-9]*)([kmg])$/i)) {
1605                $unit = lc($unit);
1606                # unknown unit is treated as 1
1607                return $num * ($unit eq 'g' ? 1073741824 :
1608                               $unit eq 'm' ?    1048576 :
1609                               $unit eq 'k' ?       1024 : 1);
1610        }
1611        return $val;
1612}
1613
1614# convert config value to array reference, if needed
1615sub config_to_multi {
1616        my $val = shift;
1617
1618        return ref($val) ? $val : (defined($val) ? [ $val ] : []);
1619}
1620
1621sub git_get_project_config {
1622        my ($key, $type) = @_;
1623
1624        # key sanity check
1625        return unless ($key);
1626        $key =~ s/^gitweb\.//;
1627        return if ($key =~ m/\W/);
1628
1629        # type sanity check
1630        if (defined $type) {
1631                $type =~ s/^--//;
1632                $type = undef
1633                        unless ($type eq 'bool' || $type eq 'int');
1634        }
1635
1636        # get config
1637        if (!defined $config_file ||
1638            $config_file ne "$git_dir/config") {
1639                %config = git_parse_project_config('gitweb');
1640                $config_file = "$git_dir/config";
1641        }
1642
1643        # ensure given type
1644        if (!defined $type) {
1645                return $config{"gitweb.$key"};
1646        } elsif ($type eq 'bool') {
1647                # backward compatibility: 'git config --bool' returns true/false
1648                return config_to_bool($config{"gitweb.$key"}) ? 'true' : 'false';
1649        } elsif ($type eq 'int') {
1650                return config_to_int($config{"gitweb.$key"});
1651        }
1652        return $config{"gitweb.$key"};
1653}
1654
1655# get hash of given path at given ref
1656sub git_get_hash_by_path {
1657        my $base = shift;
1658        my $path = shift || return undef;
1659        my $type = shift;
1660
1661        $path =~ s,/+$,,;
1662
1663        open my $fd, "-|", git_cmd(), "ls-tree", $base, "--", $path
1664                or die_error(undef, "Open git-ls-tree failed");
1665        my $line = <$fd>;
1666        close $fd or return undef;
1667
1668        if (!defined $line) {
1669                # there is no tree or hash given by $path at $base
1670                return undef;
1671        }
1672
1673        #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1674        $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/;
1675        if (defined $type && $type ne $2) {
1676                # type doesn't match
1677                return undef;
1678        }
1679        return $3;
1680}
1681
1682# get path of entry with given hash at given tree-ish (ref)
1683# used to get 'from' filename for combined diff (merge commit) for renames
1684sub git_get_path_by_hash {
1685        my $base = shift || return;
1686        my $hash = shift || return;
1687
1688        local $/ = "\0";
1689
1690        open my $fd, "-|", git_cmd(), "ls-tree", '-r', '-t', '-z', $base
1691                or return undef;
1692        while (my $line = <$fd>) {
1693                chomp $line;
1694
1695                #'040000 tree 595596a6a9117ddba9fe379b6b012b558bac8423  gitweb'
1696                #'100644 blob e02e90f0429be0d2a69b76571101f20b8f75530f  gitweb/README'
1697                if ($line =~ m/(?:[0-9]+) (?:.+) $hash\t(.+)$/) {
1698                        close $fd;
1699                        return $1;
1700                }
1701        }
1702        close $fd;
1703        return undef;
1704}
1705
1706## ......................................................................
1707## git utility functions, directly accessing git repository
1708
1709sub git_get_project_description {
1710        my $path = shift;
1711
1712        $git_dir = "$projectroot/$path";
1713        open my $fd, "$git_dir/description"
1714                or return git_get_project_config('description');
1715        my $descr = <$fd>;
1716        close $fd;
1717        if (defined $descr) {
1718                chomp $descr;
1719        }
1720        return $descr;
1721}
1722
1723sub git_get_project_url_list {
1724        my $path = shift;
1725
1726        $git_dir = "$projectroot/$path";
1727        open my $fd, "$git_dir/cloneurl"
1728                or return wantarray ?
1729                @{ config_to_multi(git_get_project_config('url')) } :
1730                   config_to_multi(git_get_project_config('url'));
1731        my @git_project_url_list = map { chomp; $_ } <$fd>;
1732        close $fd;
1733
1734        return wantarray ? @git_project_url_list : \@git_project_url_list;
1735}
1736
1737sub git_get_projects_list {
1738        my ($filter) = @_;
1739        my @list;
1740
1741        $filter ||= '';
1742        $filter =~ s/\.git$//;
1743
1744        my ($check_forks) = gitweb_check_feature('forks');
1745
1746        if (-d $projects_list) {
1747                # search in directory
1748                my $dir = $projects_list . ($filter ? "/$filter" : '');
1749                # remove the trailing "/"
1750                $dir =~ s!/+$!!;
1751                my $pfxlen = length("$dir");
1752                my $pfxdepth = ($dir =~ tr!/!!);
1753
1754                File::Find::find({
1755                        follow_fast => 1, # follow symbolic links
1756                        follow_skip => 2, # ignore duplicates
1757                        dangling_symlinks => 0, # ignore dangling symlinks, silently
1758                        wanted => sub {
1759                                # skip project-list toplevel, if we get it.
1760                                return if (m!^[/.]$!);
1761                                # only directories can be git repositories
1762                                return unless (-d $_);
1763                                # don't traverse too deep (Find is super slow on os x)
1764                                if (($File::Find::name =~ tr!/!!) - $pfxdepth > $project_maxdepth) {
1765                                        $File::Find::prune = 1;
1766                                        return;
1767                                }
1768
1769                                my $subdir = substr($File::Find::name, $pfxlen + 1);
1770                                # we check related file in $projectroot
1771                                if ($check_forks and $subdir =~ m#/.#) {
1772                                        $File::Find::prune = 1;
1773                                } elsif (check_export_ok("$projectroot/$filter/$subdir")) {
1774                                        push @list, { path => ($filter ? "$filter/" : '') . $subdir };
1775                                        $File::Find::prune = 1;
1776                                }
1777                        },
1778                }, "$dir");
1779
1780        } elsif (-f $projects_list) {
1781                # read from file(url-encoded):
1782                # 'git%2Fgit.git Linus+Torvalds'
1783                # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1784                # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1785                my %paths;
1786                open my ($fd), $projects_list or return;
1787        PROJECT:
1788                while (my $line = <$fd>) {
1789                        chomp $line;
1790                        my ($path, $owner) = split ' ', $line;
1791                        $path = unescape($path);
1792                        $owner = unescape($owner);
1793                        if (!defined $path) {
1794                                next;
1795                        }
1796                        if ($filter ne '') {
1797                                # looking for forks;
1798                                my $pfx = substr($path, 0, length($filter));
1799                                if ($pfx ne $filter) {
1800                                        next PROJECT;
1801                                }
1802                                my $sfx = substr($path, length($filter));
1803                                if ($sfx !~ /^\/.*\.git$/) {
1804                                        next PROJECT;
1805                                }
1806                        } elsif ($check_forks) {
1807                        PATH:
1808                                foreach my $filter (keys %paths) {
1809                                        # looking for forks;
1810                                        my $pfx = substr($path, 0, length($filter));
1811                                        if ($pfx ne $filter) {
1812                                                next PATH;
1813                                        }
1814                                        my $sfx = substr($path, length($filter));
1815                                        if ($sfx !~ /^\/.*\.git$/) {
1816                                                next PATH;
1817                                        }
1818                                        # is a fork, don't include it in
1819                                        # the list
1820                                        next PROJECT;
1821                                }
1822                        }
1823                        if (check_export_ok("$projectroot/$path")) {
1824                                my $pr = {
1825                                        path => $path,
1826                                        owner => to_utf8($owner),
1827                                };
1828                                push @list, $pr;
1829                                (my $forks_path = $path) =~ s/\.git$//;
1830                                $paths{$forks_path}++;
1831                        }
1832                }
1833                close $fd;
1834        }
1835        return @list;
1836}
1837
1838our $gitweb_project_owner = undef;
1839sub git_get_project_list_from_file {
1840
1841        return if (defined $gitweb_project_owner);
1842
1843        $gitweb_project_owner = {};
1844        # read from file (url-encoded):
1845        # 'git%2Fgit.git Linus+Torvalds'
1846        # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1847        # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1848        if (-f $projects_list) {
1849                open (my $fd , $projects_list);
1850                while (my $line = <$fd>) {
1851                        chomp $line;
1852                        my ($pr, $ow) = split ' ', $line;
1853                        $pr = unescape($pr);
1854                        $ow = unescape($ow);
1855                        $gitweb_project_owner->{$pr} = to_utf8($ow);
1856                }
1857                close $fd;
1858        }
1859}
1860
1861sub git_get_project_owner {
1862        my $project = shift;
1863        my $owner;
1864
1865        return undef unless $project;
1866        $git_dir = "$projectroot/$project";
1867
1868        if (!defined $gitweb_project_owner) {
1869                git_get_project_list_from_file();
1870        }
1871
1872        if (exists $gitweb_project_owner->{$project}) {
1873                $owner = $gitweb_project_owner->{$project};
1874        }
1875        if (!defined $owner){
1876                $owner = git_get_project_config('owner');
1877        }
1878        if (!defined $owner) {
1879                $owner = get_file_owner("$git_dir");
1880        }
1881
1882        return $owner;
1883}
1884
1885sub git_get_last_activity {
1886        my ($path) = @_;
1887        my $fd;
1888
1889        $git_dir = "$projectroot/$path";
1890        open($fd, "-|", git_cmd(), 'for-each-ref',
1891             '--format=%(committer)',
1892             '--sort=-committerdate',
1893             '--count=1',
1894             'refs/heads') or return;
1895        my $most_recent = <$fd>;
1896        close $fd or return;
1897        if (defined $most_recent &&
1898            $most_recent =~ / (\d+) [-+][01]\d\d\d$/) {
1899                my $timestamp = $1;
1900                my $age = time - $timestamp;
1901                return ($age, age_string($age));
1902        }
1903        return (undef, undef);
1904}
1905
1906sub git_get_references {
1907        my $type = shift || "";
1908        my %refs;
1909        # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c refs/tags/v2.6.11
1910        # c39ae07f393806ccf406ef966e9a15afc43cc36a refs/tags/v2.6.11^{}
1911        open my $fd, "-|", git_cmd(), "show-ref", "--dereference",
1912                ($type ? ("--", "refs/$type") : ()) # use -- <pattern> if $type
1913                or return;
1914
1915        while (my $line = <$fd>) {
1916                chomp $line;
1917                if ($line =~ m!^([0-9a-fA-F]{40})\srefs/($type/?[^^]+)!) {
1918                        if (defined $refs{$1}) {
1919                                push @{$refs{$1}}, $2;
1920                        } else {
1921                                $refs{$1} = [ $2 ];
1922                        }
1923                }
1924        }
1925        close $fd or return;
1926        return \%refs;
1927}
1928
1929sub git_get_rev_name_tags {
1930        my $hash = shift || return undef;
1931
1932        open my $fd, "-|", git_cmd(), "name-rev", "--tags", $hash
1933                or return;
1934        my $name_rev = <$fd>;
1935        close $fd;
1936
1937        if ($name_rev =~ m|^$hash tags/(.*)$|) {
1938                return $1;
1939        } else {
1940                # catches also '$hash undefined' output
1941                return undef;
1942        }
1943}
1944
1945## ----------------------------------------------------------------------
1946## parse to hash functions
1947
1948sub parse_date {
1949        my $epoch = shift;
1950        my $tz = shift || "-0000";
1951
1952        my %date;
1953        my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
1954        my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
1955        my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
1956        $date{'hour'} = $hour;
1957        $date{'minute'} = $min;
1958        $date{'mday'} = $mday;
1959        $date{'day'} = $days[$wday];
1960        $date{'month'} = $months[$mon];
1961        $date{'rfc2822'}   = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000",
1962                             $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
1963        $date{'mday-time'} = sprintf "%d %s %02d:%02d",
1964                             $mday, $months[$mon], $hour ,$min;
1965        $date{'iso-8601'}  = sprintf "%04d-%02d-%02dT%02d:%02d:%02dZ",
1966                             1900+$year, 1+$mon, $mday, $hour ,$min, $sec;
1967
1968        $tz =~ m/^([+\-][0-9][0-9])([0-9][0-9])$/;
1969        my $local = $epoch + ((int $1 + ($2/60)) * 3600);
1970        ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
1971        $date{'hour_local'} = $hour;
1972        $date{'minute_local'} = $min;
1973        $date{'tz_local'} = $tz;
1974        $date{'iso-tz'} = sprintf("%04d-%02d-%02d %02d:%02d:%02d %s",
1975                                  1900+$year, $mon+1, $mday,
1976                                  $hour, $min, $sec, $tz);
1977        return %date;
1978}
1979
1980sub parse_tag {
1981        my $tag_id = shift;
1982        my %tag;
1983        my @comment;
1984
1985        open my $fd, "-|", git_cmd(), "cat-file", "tag", $tag_id or return;
1986        $tag{'id'} = $tag_id;
1987        while (my $line = <$fd>) {
1988                chomp $line;
1989                if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
1990                        $tag{'object'} = $1;
1991                } elsif ($line =~ m/^type (.+)$/) {
1992                        $tag{'type'} = $1;
1993                } elsif ($line =~ m/^tag (.+)$/) {
1994                        $tag{'name'} = $1;
1995                } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
1996                        $tag{'author'} = $1;
1997                        $tag{'epoch'} = $2;
1998                        $tag{'tz'} = $3;
1999                } elsif ($line =~ m/--BEGIN/) {
2000                        push @comment, $line;
2001                        last;
2002                } elsif ($line eq "") {
2003                        last;
2004                }
2005        }
2006        push @comment, <$fd>;
2007        $tag{'comment'} = \@comment;
2008        close $fd or return;
2009        if (!defined $tag{'name'}) {
2010                return
2011        };
2012        return %tag
2013}
2014
2015sub parse_commit_text {
2016        my ($commit_text, $withparents) = @_;
2017        my @commit_lines = split '\n', $commit_text;
2018        my %co;
2019
2020        pop @commit_lines; # Remove '\0'
2021
2022        if (! @commit_lines) {
2023                return;
2024        }
2025
2026        my $header = shift @commit_lines;
2027        if ($header !~ m/^[0-9a-fA-F]{40}/) {
2028                return;
2029        }
2030        ($co{'id'}, my @parents) = split ' ', $header;
2031        while (my $line = shift @commit_lines) {
2032                last if $line eq "\n";
2033                if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
2034                        $co{'tree'} = $1;
2035                } elsif ((!defined $withparents) && ($line =~ m/^parent ([0-9a-fA-F]{40})$/)) {
2036                        push @parents, $1;
2037                } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
2038                        $co{'author'} = $1;
2039                        $co{'author_epoch'} = $2;
2040                        $co{'author_tz'} = $3;
2041                        if ($co{'author'} =~ m/^([^<]+) <([^>]*)>/) {
2042                                $co{'author_name'}  = $1;
2043                                $co{'author_email'} = $2;
2044                        } else {
2045                                $co{'author_name'} = $co{'author'};
2046                        }
2047                } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
2048                        $co{'committer'} = $1;
2049                        $co{'committer_epoch'} = $2;
2050                        $co{'committer_tz'} = $3;
2051                        $co{'committer_name'} = $co{'committer'};
2052                        if ($co{'committer'} =~ m/^([^<]+) <([^>]*)>/) {
2053                                $co{'committer_name'}  = $1;
2054                                $co{'committer_email'} = $2;
2055                        } else {
2056                                $co{'committer_name'} = $co{'committer'};
2057                        }
2058                }
2059        }
2060        if (!defined $co{'tree'}) {
2061                return;
2062        };
2063        $co{'parents'} = \@parents;
2064        $co{'parent'} = $parents[0];
2065
2066        foreach my $title (@commit_lines) {
2067                $title =~ s/^    //;
2068                if ($title ne "") {
2069                        $co{'title'} = chop_str($title, 80, 5);
2070                        # remove leading stuff of merges to make the interesting part visible
2071                        if (length($title) > 50) {
2072                                $title =~ s/^Automatic //;
2073                                $title =~ s/^merge (of|with) /Merge ... /i;
2074                                if (length($title) > 50) {
2075                                        $title =~ s/(http|rsync):\/\///;
2076                                }
2077                                if (length($title) > 50) {
2078                                        $title =~ s/(master|www|rsync)\.//;
2079                                }
2080                                if (length($title) > 50) {
2081                                        $title =~ s/kernel.org:?//;
2082                                }
2083                                if (length($title) > 50) {
2084                                        $title =~ s/\/pub\/scm//;
2085                                }
2086                        }
2087                        $co{'title_short'} = chop_str($title, 50, 5);
2088                        last;
2089                }
2090        }
2091        if ($co{'title'} eq "") {
2092                $co{'title'} = $co{'title_short'} = '(no commit message)';
2093        }
2094        # remove added spaces
2095        foreach my $line (@commit_lines) {
2096                $line =~ s/^    //;
2097        }
2098        $co{'comment'} = \@commit_lines;
2099
2100        my $age = time - $co{'committer_epoch'};
2101        $co{'age'} = $age;
2102        $co{'age_string'} = age_string($age);
2103        my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
2104        if ($age > 60*60*24*7*2) {
2105                $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
2106                $co{'age_string_age'} = $co{'age_string'};
2107        } else {
2108                $co{'age_string_date'} = $co{'age_string'};
2109                $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
2110        }
2111        return %co;
2112}
2113
2114sub parse_commit {
2115        my ($commit_id) = @_;
2116        my %co;
2117
2118        local $/ = "\0";
2119
2120        open my $fd, "-|", git_cmd(), "rev-list",
2121                "--parents",
2122                "--header",
2123                "--max-count=1",
2124                $commit_id,
2125                "--",
2126                or die_error(undef, "Open git-rev-list failed");
2127        %co = parse_commit_text(<$fd>, 1);
2128        close $fd;
2129
2130        return %co;
2131}
2132
2133sub parse_commits {
2134        my ($commit_id, $maxcount, $skip, $filename, @args) = @_;
2135        my @cos;
2136
2137        $maxcount ||= 1;
2138        $skip ||= 0;
2139
2140        local $/ = "\0";
2141
2142        open my $fd, "-|", git_cmd(), "rev-list",
2143                "--header",
2144                @args,
2145                ("--max-count=" . $maxcount),
2146                ("--skip=" . $skip),
2147                @extra_options,
2148                $commit_id,
2149                "--",
2150                ($filename ? ($filename) : ())
2151                or die_error(undef, "Open git-rev-list failed");
2152        while (my $line = <$fd>) {
2153                my %co = parse_commit_text($line);
2154                push @cos, \%co;
2155        }
2156        close $fd;
2157
2158        return wantarray ? @cos : \@cos;
2159}
2160
2161# parse ref from ref_file, given by ref_id, with given type
2162sub parse_ref {
2163        my $ref_file = shift;
2164        my $ref_id = shift;
2165        my $type = shift || git_get_type($ref_id);
2166        my %ref_item;
2167
2168        $ref_item{'type'} = $type;
2169        $ref_item{'id'} = $ref_id;
2170        $ref_item{'epoch'} = 0;
2171        $ref_item{'age'} = "unknown";
2172        if ($type eq "tag") {
2173                my %tag = parse_tag($ref_id);
2174                $ref_item{'comment'} = $tag{'comment'};
2175                if ($tag{'type'} eq "commit") {
2176                        my %co = parse_commit($tag{'object'});
2177                        $ref_item{'epoch'} = $co{'committer_epoch'};
2178                        $ref_item{'age'} = $co{'age_string'};
2179                } elsif (defined($tag{'epoch'})) {
2180                        my $age = time - $tag{'epoch'};
2181                        $ref_item{'epoch'} = $tag{'epoch'};
2182                        $ref_item{'age'} = age_string($age);
2183                }
2184                $ref_item{'reftype'} = $tag{'type'};
2185                $ref_item{'name'} = $tag{'name'};
2186                $ref_item{'refid'} = $tag{'object'};
2187        } elsif ($type eq "commit"){
2188                my %co = parse_commit($ref_id);
2189                $ref_item{'reftype'} = "commit";
2190                $ref_item{'name'} = $ref_file;
2191                $ref_item{'title'} = $co{'title'};
2192                $ref_item{'refid'} = $ref_id;
2193                $ref_item{'epoch'} = $co{'committer_epoch'};
2194                $ref_item{'age'} = $co{'age_string'};
2195        } else {
2196                $ref_item{'reftype'} = $type;
2197                $ref_item{'name'} = $ref_file;
2198                $ref_item{'refid'} = $ref_id;
2199        }
2200
2201        return %ref_item;
2202}
2203
2204# parse line of git-diff-tree "raw" output
2205sub parse_difftree_raw_line {
2206        my $line = shift;
2207        my %res;
2208
2209        # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M   ls-files.c'
2210        # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M   rev-tree.c'
2211        if ($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/) {
2212                $res{'from_mode'} = $1;
2213                $res{'to_mode'} = $2;
2214                $res{'from_id'} = $3;
2215                $res{'to_id'} = $4;
2216                $res{'status'} = $5;
2217                $res{'similarity'} = $6;
2218                if ($res{'status'} eq 'R' || $res{'status'} eq 'C') { # renamed or copied
2219                        ($res{'from_file'}, $res{'to_file'}) = map { unquote($_) } split("\t", $7);
2220                } else {
2221                        $res{'from_file'} = $res{'to_file'} = $res{'file'} = unquote($7);
2222                }
2223        }
2224        # '::100755 100755 100755 60e79ca1b01bc8b057abe17ddab484699a7f5fdb 94067cc5f73388f33722d52ae02f44692bc07490 94067cc5f73388f33722d52ae02f44692bc07490 MR git-gui/git-gui.sh'
2225        # combined diff (for merge commit)
2226        elsif ($line =~ s/^(::+)((?:[0-7]{6} )+)((?:[0-9a-fA-F]{40} )+)([a-zA-Z]+)\t(.*)$//) {
2227                $res{'nparents'}  = length($1);
2228                $res{'from_mode'} = [ split(' ', $2) ];
2229                $res{'to_mode'} = pop @{$res{'from_mode'}};
2230                $res{'from_id'} = [ split(' ', $3) ];
2231                $res{'to_id'} = pop @{$res{'from_id'}};
2232                $res{'status'} = [ split('', $4) ];
2233                $res{'to_file'} = unquote($5);
2234        }
2235        # 'c512b523472485aef4fff9e57b229d9d243c967f'
2236        elsif ($line =~ m/^([0-9a-fA-F]{40})$/) {
2237                $res{'commit'} = $1;
2238        }
2239
2240        return wantarray ? %res : \%res;
2241}
2242
2243# wrapper: return parsed line of git-diff-tree "raw" output
2244# (the argument might be raw line, or parsed info)
2245sub parsed_difftree_line {
2246        my $line_or_ref = shift;
2247
2248        if (ref($line_or_ref) eq "HASH") {
2249                # pre-parsed (or generated by hand)
2250                return $line_or_ref;
2251        } else {
2252                return parse_difftree_raw_line($line_or_ref);
2253        }
2254}
2255
2256# parse line of git-ls-tree output
2257sub parse_ls_tree_line ($;%) {
2258        my $line = shift;
2259        my %opts = @_;
2260        my %res;
2261
2262        #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
2263        $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/s;
2264
2265        $res{'mode'} = $1;
2266        $res{'type'} = $2;
2267        $res{'hash'} = $3;
2268        if ($opts{'-z'}) {
2269                $res{'name'} = $4;
2270        } else {
2271                $res{'name'} = unquote($4);
2272        }
2273
2274        return wantarray ? %res : \%res;
2275}
2276
2277# generates _two_ hashes, references to which are passed as 2 and 3 argument
2278sub parse_from_to_diffinfo {
2279        my ($diffinfo, $from, $to, @parents) = @_;
2280
2281        if ($diffinfo->{'nparents'}) {
2282                # combined diff
2283                $from->{'file'} = [];
2284                $from->{'href'} = [];
2285                fill_from_file_info($diffinfo, @parents)
2286                        unless exists $diffinfo->{'from_file'};
2287                for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
2288                        $from->{'file'}[$i] =
2289                                defined $diffinfo->{'from_file'}[$i] ?
2290                                        $diffinfo->{'from_file'}[$i] :
2291                                        $diffinfo->{'to_file'};
2292                        if ($diffinfo->{'status'}[$i] ne "A") { # not new (added) file
2293                                $from->{'href'}[$i] = href(action=>"blob",
2294                                                           hash_base=>$parents[$i],
2295                                                           hash=>$diffinfo->{'from_id'}[$i],
2296                                                           file_name=>$from->{'file'}[$i]);
2297                        } else {
2298                                $from->{'href'}[$i] = undef;
2299                        }
2300                }
2301        } else {
2302                # ordinary (not combined) diff
2303                $from->{'file'} = $diffinfo->{'from_file'};
2304                if ($diffinfo->{'status'} ne "A") { # not new (added) file
2305                        $from->{'href'} = href(action=>"blob", hash_base=>$hash_parent,
2306                                               hash=>$diffinfo->{'from_id'},
2307                                               file_name=>$from->{'file'});
2308                } else {
2309                        delete $from->{'href'};
2310                }
2311        }
2312
2313        $to->{'file'} = $diffinfo->{'to_file'};
2314        if (!is_deleted($diffinfo)) { # file exists in result
2315                $to->{'href'} = href(action=>"blob", hash_base=>$hash,
2316                                     hash=>$diffinfo->{'to_id'},
2317                                     file_name=>$to->{'file'});
2318        } else {
2319                delete $to->{'href'};
2320        }
2321}
2322
2323## ......................................................................
2324## parse to array of hashes functions
2325
2326sub git_get_heads_list {
2327        my $limit = shift;
2328        my @headslist;
2329
2330        open my $fd, '-|', git_cmd(), 'for-each-ref',
2331                ($limit ? '--count='.($limit+1) : ()), '--sort=-committerdate',
2332                '--format=%(objectname) %(refname) %(subject)%00%(committer)',
2333                'refs/heads'
2334                or return;
2335        while (my $line = <$fd>) {
2336                my %ref_item;
2337
2338                chomp $line;
2339                my ($refinfo, $committerinfo) = split(/\0/, $line);
2340                my ($hash, $name, $title) = split(' ', $refinfo, 3);
2341                my ($committer, $epoch, $tz) =
2342                        ($committerinfo =~ /^(.*) ([0-9]+) (.*)$/);
2343                $ref_item{'fullname'}  = $name;
2344                $name =~ s!^refs/heads/!!;
2345
2346                $ref_item{'name'}  = $name;
2347                $ref_item{'id'}    = $hash;
2348                $ref_item{'title'} = $title || '(no commit message)';
2349                $ref_item{'epoch'} = $epoch;
2350                if ($epoch) {
2351                        $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
2352                } else {
2353                        $ref_item{'age'} = "unknown";
2354                }
2355
2356                push @headslist, \%ref_item;
2357        }
2358        close $fd;
2359
2360        return wantarray ? @headslist : \@headslist;
2361}
2362
2363sub git_get_tags_list {
2364        my $limit = shift;
2365        my @tagslist;
2366
2367        open my $fd, '-|', git_cmd(), 'for-each-ref',
2368                ($limit ? '--count='.($limit+1) : ()), '--sort=-creatordate',
2369                '--format=%(objectname) %(objecttype) %(refname) '.
2370                '%(*objectname) %(*objecttype) %(subject)%00%(creator)',
2371                'refs/tags'
2372                or return;
2373        while (my $line = <$fd>) {
2374                my %ref_item;
2375
2376                chomp $line;
2377                my ($refinfo, $creatorinfo) = split(/\0/, $line);
2378                my ($id, $type, $name, $refid, $reftype, $title) = split(' ', $refinfo, 6);
2379                my ($creator, $epoch, $tz) =
2380                        ($creatorinfo =~ /^(.*) ([0-9]+) (.*)$/);
2381                $ref_item{'fullname'} = $name;
2382                $name =~ s!^refs/tags/!!;
2383
2384                $ref_item{'type'} = $type;
2385                $ref_item{'id'} = $id;
2386                $ref_item{'name'} = $name;
2387                if ($type eq "tag") {
2388                        $ref_item{'subject'} = $title;
2389                        $ref_item{'reftype'} = $reftype;
2390                        $ref_item{'refid'}   = $refid;
2391                } else {
2392                        $ref_item{'reftype'} = $type;
2393                        $ref_item{'refid'}   = $id;
2394                }
2395
2396                if ($type eq "tag" || $type eq "commit") {
2397                        $ref_item{'epoch'} = $epoch;
2398                        if ($epoch) {
2399                                $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
2400                        } else {
2401                                $ref_item{'age'} = "unknown";
2402                        }
2403                }
2404
2405                push @tagslist, \%ref_item;
2406        }
2407        close $fd;
2408
2409        return wantarray ? @tagslist : \@tagslist;
2410}
2411
2412## ----------------------------------------------------------------------
2413## filesystem-related functions
2414
2415sub get_file_owner {
2416        my $path = shift;
2417
2418        my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
2419        my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
2420        if (!defined $gcos) {
2421                return undef;
2422        }
2423        my $owner = $gcos;
2424        $owner =~ s/[,;].*$//;
2425        return to_utf8($owner);
2426}
2427
2428## ......................................................................
2429## mimetype related functions
2430
2431sub mimetype_guess_file {
2432        my $filename = shift;
2433        my $mimemap = shift;
2434        -r $mimemap or return undef;
2435
2436        my %mimemap;
2437        open(MIME, $mimemap) or return undef;
2438        while (<MIME>) {
2439                next if m/^#/; # skip comments
2440                my ($mime, $exts) = split(/\t+/);
2441                if (defined $exts) {
2442                        my @exts = split(/\s+/, $exts);
2443                        foreach my $ext (@exts) {
2444                                $mimemap{$ext} = $mime;
2445                        }
2446                }
2447        }
2448        close(MIME);
2449
2450        $filename =~ /\.([^.]*)$/;
2451        return $mimemap{$1};
2452}
2453
2454sub mimetype_guess {
2455        my $filename = shift;
2456        my $mime;
2457        $filename =~ /\./ or return undef;
2458
2459        if ($mimetypes_file) {
2460                my $file = $mimetypes_file;
2461                if ($file !~ m!^/!) { # if it is relative path
2462                        # it is relative to project
2463                        $file = "$projectroot/$project/$file";
2464                }
2465                $mime = mimetype_guess_file($filename, $file);
2466        }
2467        $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
2468        return $mime;
2469}
2470
2471sub blob_mimetype {
2472        my $fd = shift;
2473        my $filename = shift;
2474
2475        if ($filename) {
2476                my $mime = mimetype_guess($filename);
2477                $mime and return $mime;
2478        }
2479
2480        # just in case
2481        return $default_blob_plain_mimetype unless $fd;
2482
2483        if (-T $fd) {
2484                return 'text/plain';
2485        } elsif (! $filename) {
2486                return 'application/octet-stream';
2487        } elsif ($filename =~ m/\.png$/i) {
2488                return 'image/png';
2489        } elsif ($filename =~ m/\.gif$/i) {
2490                return 'image/gif';
2491        } elsif ($filename =~ m/\.jpe?g$/i) {
2492                return 'image/jpeg';
2493        } else {
2494                return 'application/octet-stream';
2495        }
2496}
2497
2498sub blob_contenttype {
2499        my ($fd, $file_name, $type) = @_;
2500
2501        $type ||= blob_mimetype($fd, $file_name);
2502        if ($type eq 'text/plain' && defined $default_text_plain_charset) {
2503                $type .= "; charset=$default_text_plain_charset";
2504        }
2505
2506        return $type;
2507}
2508
2509## ======================================================================
2510## functions printing HTML: header, footer, error page
2511
2512sub git_header_html {
2513        my $status = shift || "200 OK";
2514        my $expires = shift;
2515
2516        my $title = "$site_name";
2517        if (defined $project) {
2518                $title .= " - " . to_utf8($project);
2519                if (defined $action) {
2520                        $title .= "/$action";
2521                        if (defined $file_name) {
2522                                $title .= " - " . esc_path($file_name);
2523                                if ($action eq "tree" && $file_name !~ m|/$|) {
2524                                        $title .= "/";
2525                                }
2526                        }
2527                }
2528        }
2529        my $content_type;
2530        # require explicit support from the UA if we are to send the page as
2531        # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
2532        # we have to do this because MSIE sometimes globs '*/*', pretending to
2533        # support xhtml+xml but choking when it gets what it asked for.
2534        if (defined $cgi->http('HTTP_ACCEPT') &&
2535            $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ &&
2536            $cgi->Accept('application/xhtml+xml') != 0) {
2537                $content_type = 'application/xhtml+xml';
2538        } else {
2539                $content_type = 'text/html';
2540        }
2541        print $cgi->header(-type=>$content_type, -charset => 'utf-8',
2542                           -status=> $status, -expires => $expires);
2543        my $mod_perl_version = $ENV{'MOD_PERL'} ? " $ENV{'MOD_PERL'}" : '';
2544        print <<EOF;
2545<?xml version="1.0" encoding="utf-8"?>
2546<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
2547<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
2548<!-- git web interface version $version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
2549<!-- git core binaries version $git_version -->
2550<head>
2551<meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
2552<meta name="generator" content="gitweb/$version git/$git_version$mod_perl_version"/>
2553<meta name="robots" content="index, nofollow"/>
2554<title>$title</title>
2555EOF
2556# print out each stylesheet that exist
2557        if (defined $stylesheet) {
2558#provides backwards capability for those people who define style sheet in a config file
2559                print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
2560        } else {
2561                foreach my $stylesheet (@stylesheets) {
2562                        next unless $stylesheet;
2563                        print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
2564                }
2565        }
2566        if (defined $project) {
2567                my %href_params = get_feed_info();
2568                if (!exists $href_params{'-title'}) {
2569                        $href_params{'-title'} = 'log';
2570                }
2571
2572                foreach my $format qw(RSS Atom) {
2573                        my $type = lc($format);
2574                        my %link_attr = (
2575                                '-rel' => 'alternate',
2576                                '-title' => "$project - $href_params{'-title'} - $format feed",
2577                                '-type' => "application/$type+xml"
2578                        );
2579
2580                        $href_params{'action'} = $type;
2581                        $link_attr{'-href'} = href(%href_params);
2582                        print "<link ".
2583                              "rel=\"$link_attr{'-rel'}\" ".
2584                              "title=\"$link_attr{'-title'}\" ".
2585                              "href=\"$link_attr{'-href'}\" ".
2586                              "type=\"$link_attr{'-type'}\" ".
2587                              "/>\n";
2588
2589                        $href_params{'extra_options'} = '--no-merges';
2590                        $link_attr{'-href'} = href(%href_params);
2591                        $link_attr{'-title'} .= ' (no merges)';
2592                        print "<link ".
2593                              "rel=\"$link_attr{'-rel'}\" ".
2594                              "title=\"$link_attr{'-title'}\" ".
2595                              "href=\"$link_attr{'-href'}\" ".
2596                              "type=\"$link_attr{'-type'}\" ".
2597                              "/>\n";
2598                }
2599
2600        } else {
2601                printf('<link rel="alternate" title="%s projects list" '.
2602                       'href="%s" type="text/plain; charset=utf-8" />'."\n",
2603                       $site_name, href(project=>undef, action=>"project_index"));
2604                printf('<link rel="alternate" title="%s projects feeds" '.
2605                       'href="%s" type="text/x-opml" />'."\n",
2606                       $site_name, href(project=>undef, action=>"opml"));
2607        }
2608        if (defined $favicon) {
2609                print qq(<link rel="shortcut icon" href="$favicon" type="image/png" />\n);
2610        }
2611
2612        print "</head>\n" .
2613              "<body>\n";
2614
2615        if (-f $site_header) {
2616                open (my $fd, $site_header);
2617                print <$fd>;
2618                close $fd;
2619        }
2620
2621        print "<div class=\"page_header\">\n" .
2622              $cgi->a({-href => esc_url($logo_url),
2623                       -title => $logo_label},
2624                      qq(<img src="$logo" width="72" height="27" alt="git" class="logo"/>));
2625        print $cgi->a({-href => esc_url($home_link)}, $home_link_str) . " / ";
2626        if (defined $project) {
2627                print $cgi->a({-href => href(action=>"summary")}, esc_html($project));
2628                if (defined $action) {
2629                        print " / $action";
2630                }
2631                print "\n";
2632        }
2633        print "</div>\n";
2634
2635        my ($have_search) = gitweb_check_feature('search');
2636        if (defined $project && $have_search) {
2637                if (!defined $searchtext) {
2638                        $searchtext = "";
2639                }
2640                my $search_hash;
2641                if (defined $hash_base) {
2642                        $search_hash = $hash_base;
2643                } elsif (defined $hash) {
2644                        $search_hash = $hash;
2645                } else {
2646                        $search_hash = "HEAD";
2647                }
2648                my $action = $my_uri;
2649                my ($use_pathinfo) = gitweb_check_feature('pathinfo');
2650                if ($use_pathinfo) {
2651                        $action .= "/".esc_url($project);
2652                }
2653                print $cgi->startform(-method => "get", -action => $action) .
2654                      "<div class=\"search\">\n" .
2655                      (!$use_pathinfo &&
2656                      $cgi->input({-name=>"p", -value=>$project, -type=>"hidden"}) . "\n") .
2657                      $cgi->input({-name=>"a", -value=>"search", -type=>"hidden"}) . "\n" .
2658                      $cgi->input({-name=>"h", -value=>$search_hash, -type=>"hidden"}) . "\n" .
2659                      $cgi->popup_menu(-name => 'st', -default => 'commit',
2660                                       -values => ['commit', 'grep', 'author', 'committer', 'pickaxe']) .
2661                      $cgi->sup($cgi->a({-href => href(action=>"search_help")}, "?")) .
2662                      " search:\n",
2663                      $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
2664                      "<span title=\"Extended regular expression\">" .
2665                      $cgi->checkbox(-name => 'sr', -value => 1, -label => 're',
2666                                     -checked => $search_use_regexp) .
2667                      "</span>" .
2668                      "</div>" .
2669                      $cgi->end_form() . "\n";
2670        }
2671}
2672
2673sub git_footer_html {
2674        my $feed_class = 'rss_logo';
2675
2676        print "<div class=\"page_footer\">\n";
2677        if (defined $project) {
2678                my $descr = git_get_project_description($project);
2679                if (defined $descr) {
2680                        print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
2681                }
2682
2683                my %href_params = get_feed_info();
2684                if (!%href_params) {
2685                        $feed_class .= ' generic';
2686                }
2687                $href_params{'-title'} ||= 'log';
2688
2689                foreach my $format qw(RSS Atom) {
2690                        $href_params{'action'} = lc($format);
2691                        print $cgi->a({-href => href(%href_params),
2692                                      -title => "$href_params{'-title'} $format feed",
2693                                      -class => $feed_class}, $format)."\n";
2694                }
2695
2696        } else {
2697                print $cgi->a({-href => href(project=>undef, action=>"opml"),
2698                              -class => $feed_class}, "OPML") . " ";
2699                print $cgi->a({-href => href(project=>undef, action=>"project_index"),
2700                              -class => $feed_class}, "TXT") . "\n";
2701        }
2702        print "</div>\n"; # class="page_footer"
2703
2704        if (-f $site_footer) {
2705                open (my $fd, $site_footer);
2706                print <$fd>;
2707                close $fd;
2708        }
2709
2710        print "</body>\n" .
2711              "</html>";
2712}
2713
2714sub die_error {
2715        my $status = shift || "403 Forbidden";
2716        my $error = shift || "Malformed query, file missing or permission denied";
2717
2718        git_header_html($status);
2719        print <<EOF;
2720<div class="page_body">
2721<br /><br />
2722$status - $error
2723<br />
2724</div>
2725EOF
2726        git_footer_html();
2727        exit;
2728}
2729
2730## ----------------------------------------------------------------------
2731## functions printing or outputting HTML: navigation
2732
2733sub git_print_page_nav {
2734        my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
2735        $extra = '' if !defined $extra; # pager or formats
2736
2737        my @navs = qw(summary shortlog log commit commitdiff tree);
2738        if ($suppress) {
2739                @navs = grep { $_ ne $suppress } @navs;
2740        }
2741
2742        my %arg = map { $_ => {action=>$_} } @navs;
2743        if (defined $head) {
2744                for (qw(commit commitdiff)) {
2745                        $arg{$_}{'hash'} = $head;
2746                }
2747                if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
2748                        for (qw(shortlog log)) {
2749                                $arg{$_}{'hash'} = $head;
2750                        }
2751                }
2752        }
2753        $arg{'tree'}{'hash'} = $treehead if defined $treehead;
2754        $arg{'tree'}{'hash_base'} = $treebase if defined $treebase;
2755
2756        print "<div class=\"page_nav\">\n" .
2757                (join " | ",
2758                 map { $_ eq $current ?
2759                       $_ : $cgi->a({-href => href(%{$arg{$_}})}, "$_")
2760                 } @navs);
2761        print "<br/>\n$extra<br/>\n" .
2762              "</div>\n";
2763}
2764
2765sub format_paging_nav {
2766        my ($action, $hash, $head, $page, $has_next_link) = @_;
2767        my $paging_nav;
2768
2769
2770        if ($hash ne $head || $page) {
2771                $paging_nav .= $cgi->a({-href => href(action=>$action)}, "HEAD");
2772        } else {
2773                $paging_nav .= "HEAD";
2774        }
2775
2776        if ($page > 0) {
2777                $paging_nav .= " &sdot; " .
2778                        $cgi->a({-href => href(-replay=>1, page=>$page-1),
2779                                 -accesskey => "p", -title => "Alt-p"}, "prev");
2780        } else {
2781                $paging_nav .= " &sdot; prev";
2782        }
2783
2784        if ($has_next_link) {
2785                $paging_nav .= " &sdot; " .
2786                        $cgi->a({-href => href(-replay=>1, page=>$page+1),
2787                                 -accesskey => "n", -title => "Alt-n"}, "next");
2788        } else {
2789                $paging_nav .= " &sdot; next";
2790        }
2791
2792        return $paging_nav;
2793}
2794
2795## ......................................................................
2796## functions printing or outputting HTML: div
2797
2798sub git_print_header_div {
2799        my ($action, $title, $hash, $hash_base) = @_;
2800        my %args = ();
2801
2802        $args{'action'} = $action;
2803        $args{'hash'} = $hash if $hash;
2804        $args{'hash_base'} = $hash_base if $hash_base;
2805
2806        print "<div class=\"header\">\n" .
2807              $cgi->a({-href => href(%args), -class => "title"},
2808              $title ? $title : $action) .
2809              "\n</div>\n";
2810}
2811
2812#sub git_print_authorship (\%) {
2813sub git_print_authorship {
2814        my $co = shift;
2815
2816        my %ad = parse_date($co->{'author_epoch'}, $co->{'author_tz'});
2817        print "<div class=\"author_date\">" .
2818              esc_html($co->{'author_name'}) .
2819              " [$ad{'rfc2822'}";
2820        if ($ad{'hour_local'} < 6) {
2821                printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
2822                       $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2823        } else {
2824                printf(" (%02d:%02d %s)",
2825                       $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2826        }
2827        print "]</div>\n";
2828}
2829
2830sub git_print_page_path {
2831        my $name = shift;
2832        my $type = shift;
2833        my $hb = shift;
2834
2835
2836        print "<div class=\"page_path\">";
2837        print $cgi->a({-href => href(action=>"tree", hash_base=>$hb),
2838                      -title => 'tree root'}, to_utf8("[$project]"));
2839        print " / ";
2840        if (defined $name) {
2841                my @dirname = split '/', $name;
2842                my $basename = pop @dirname;
2843                my $fullname = '';
2844
2845                foreach my $dir (@dirname) {
2846                        $fullname .= ($fullname ? '/' : '') . $dir;
2847                        print $cgi->a({-href => href(action=>"tree", file_name=>$fullname,
2848                                                     hash_base=>$hb),
2849                                      -title => $fullname}, esc_path($dir));
2850                        print " / ";
2851                }
2852                if (defined $type && $type eq 'blob') {
2853                        print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name,
2854                                                     hash_base=>$hb),
2855                                      -title => $name}, esc_path($basename));
2856                } elsif (defined $type && $type eq 'tree') {
2857                        print $cgi->a({-href => href(action=>"tree", file_name=>$file_name,
2858                                                     hash_base=>$hb),
2859                                      -title => $name}, esc_path($basename));
2860                        print " / ";
2861                } else {
2862                        print esc_path($basename);
2863                }
2864        }
2865        print "<br/></div>\n";
2866}
2867
2868# sub git_print_log (\@;%) {
2869sub git_print_log ($;%) {
2870        my $log = shift;
2871        my %opts = @_;
2872
2873        if ($opts{'-remove_title'}) {
2874                # remove title, i.e. first line of log
2875                shift @$log;
2876        }
2877        # remove leading empty lines
2878        while (defined $log->[0] && $log->[0] eq "") {
2879                shift @$log;
2880        }
2881
2882        # print log
2883        my $signoff = 0;
2884        my $empty = 0;
2885        foreach my $line (@$log) {
2886                if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
2887                        $signoff = 1;
2888                        $empty = 0;
2889                        if (! $opts{'-remove_signoff'}) {
2890                                print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
2891                                next;
2892                        } else {
2893                                # remove signoff lines
2894                                next;
2895                        }
2896                } else {
2897                        $signoff = 0;
2898                }
2899
2900                # print only one empty line
2901                # do not print empty line after signoff
2902                if ($line eq "") {
2903                        next if ($empty || $signoff);
2904                        $empty = 1;
2905                } else {
2906                        $empty = 0;
2907                }
2908
2909                print format_log_line_html($line) . "<br/>\n";
2910        }
2911
2912        if ($opts{'-final_empty_line'}) {
2913                # end with single empty line
2914                print "<br/>\n" unless $empty;
2915        }
2916}
2917
2918# return link target (what link points to)
2919sub git_get_link_target {
2920        my $hash = shift;
2921        my $link_target;
2922
2923        # read link
2924        open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
2925                or return;
2926        {
2927                local $/;
2928                $link_target = <$fd>;
2929        }
2930        close $fd
2931                or return;
2932
2933        return $link_target;
2934}
2935
2936# given link target, and the directory (basedir) the link is in,
2937# return target of link relative to top directory (top tree);
2938# return undef if it is not possible (including absolute links).
2939sub normalize_link_target {
2940        my ($link_target, $basedir, $hash_base) = @_;
2941
2942        # we can normalize symlink target only if $hash_base is provided
2943        return unless $hash_base;
2944
2945        # absolute symlinks (beginning with '/') cannot be normalized
2946        return if (substr($link_target, 0, 1) eq '/');
2947
2948        # normalize link target to path from top (root) tree (dir)
2949        my $path;
2950        if ($basedir) {
2951                $path = $basedir . '/' . $link_target;
2952        } else {
2953                # we are in top (root) tree (dir)
2954                $path = $link_target;
2955        }
2956
2957        # remove //, /./, and /../
2958        my @path_parts;
2959        foreach my $part (split('/', $path)) {
2960                # discard '.' and ''
2961                next if (!$part || $part eq '.');
2962                # handle '..'
2963                if ($part eq '..') {
2964                        if (@path_parts) {
2965                                pop @path_parts;
2966                        } else {
2967                                # link leads outside repository (outside top dir)
2968                                return;
2969                        }
2970                } else {
2971                        push @path_parts, $part;
2972                }
2973        }
2974        $path = join('/', @path_parts);
2975
2976        return $path;
2977}
2978
2979# print tree entry (row of git_tree), but without encompassing <tr> element
2980sub git_print_tree_entry {
2981        my ($t, $basedir, $hash_base, $have_blame) = @_;
2982
2983        my %base_key = ();
2984        $base_key{'hash_base'} = $hash_base if defined $hash_base;
2985
2986        # The format of a table row is: mode list link.  Where mode is
2987        # the mode of the entry, list is the name of the entry, an href,
2988        # and link is the action links of the entry.
2989
2990        print "<td class=\"mode\">" . mode_str($t->{'mode'}) . "</td>\n";
2991        if ($t->{'type'} eq "blob") {
2992                print "<td class=\"list\">" .
2993                        $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2994                                               file_name=>"$basedir$t->{'name'}", %base_key),
2995                                -class => "list"}, esc_path($t->{'name'}));
2996                if (S_ISLNK(oct $t->{'mode'})) {
2997                        my $link_target = git_get_link_target($t->{'hash'});
2998                        if ($link_target) {
2999                                my $norm_target = normalize_link_target($link_target, $basedir, $hash_base);
3000                                if (defined $norm_target) {
3001                                        print " -> " .
3002                                              $cgi->a({-href => href(action=>"object", hash_base=>$hash_base,
3003                                                                     file_name=>$norm_target),
3004                                                       -title => $norm_target}, esc_path($link_target));
3005                                } else {
3006                                        print " -> " . esc_path($link_target);
3007                                }
3008                        }
3009                }
3010                print "</td>\n";
3011                print "<td class=\"link\">";
3012                print $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
3013                                             file_name=>"$basedir$t->{'name'}", %base_key)},
3014                              "blob");
3015                if ($have_blame) {
3016                        print " | " .
3017                              $cgi->a({-href => href(action=>"blame", hash=>$t->{'hash'},
3018                                                     file_name=>"$basedir$t->{'name'}", %base_key)},
3019                                      "blame");
3020                }
3021                if (defined $hash_base) {
3022                        print " | " .
3023                              $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
3024                                                     hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
3025                                      "history");
3026                }
3027                print " | " .
3028                        $cgi->a({-href => href(action=>"blob_plain", hash_base=>$hash_base,
3029                                               file_name=>"$basedir$t->{'name'}")},
3030                                "raw");
3031                print "</td>\n";
3032
3033        } elsif ($t->{'type'} eq "tree") {
3034                print "<td class=\"list\">";
3035                print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
3036                                             file_name=>"$basedir$t->{'name'}", %base_key)},
3037                              esc_path($t->{'name'}));
3038                print "</td>\n";
3039                print "<td class=\"link\">";
3040                print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
3041                                             file_name=>"$basedir$t->{'name'}", %base_key)},
3042                              "tree");
3043                if (defined $hash_base) {
3044                        print " | " .
3045                              $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
3046                                                     file_name=>"$basedir$t->{'name'}")},
3047                                      "history");
3048                }
3049                print "</td>\n";
3050        } else {
3051                # unknown object: we can only present history for it
3052                # (this includes 'commit' object, i.e. submodule support)
3053                print "<td class=\"list\">" .
3054                      esc_path($t->{'name'}) .
3055                      "</td>\n";
3056                print "<td class=\"link\">";
3057                if (defined $hash_base) {
3058                        print $cgi->a({-href => href(action=>"history",
3059                                                     hash_base=>$hash_base,
3060                                                     file_name=>"$basedir$t->{'name'}")},
3061                                      "history");
3062                }
3063                print "</td>\n";
3064        }
3065}
3066
3067## ......................................................................
3068## functions printing large fragments of HTML
3069
3070# get pre-image filenames for merge (combined) diff
3071sub fill_from_file_info {
3072        my ($diff, @parents) = @_;
3073
3074        $diff->{'from_file'} = [ ];
3075        $diff->{'from_file'}[$diff->{'nparents'} - 1] = undef;
3076        for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
3077                if ($diff->{'status'}[$i] eq 'R' ||
3078                    $diff->{'status'}[$i] eq 'C') {
3079                        $diff->{'from_file'}[$i] =
3080                                git_get_path_by_hash($parents[$i], $diff->{'from_id'}[$i]);
3081                }
3082        }
3083
3084        return $diff;
3085}
3086
3087# is current raw difftree line of file deletion
3088sub is_deleted {
3089        my $diffinfo = shift;
3090
3091        return $diffinfo->{'to_id'} eq ('0' x 40);
3092}
3093
3094# does patch correspond to [previous] difftree raw line
3095# $diffinfo  - hashref of parsed raw diff format
3096# $patchinfo - hashref of parsed patch diff format
3097#              (the same keys as in $diffinfo)
3098sub is_patch_split {
3099        my ($diffinfo, $patchinfo) = @_;
3100
3101        return defined $diffinfo && defined $patchinfo
3102                && $diffinfo->{'to_file'} eq $patchinfo->{'to_file'};
3103}
3104
3105
3106sub git_difftree_body {
3107        my ($difftree, $hash, @parents) = @_;
3108        my ($parent) = $parents[0];
3109        my ($have_blame) = gitweb_check_feature('blame');
3110        print "<div class=\"list_head\">\n";
3111        if ($#{$difftree} > 10) {
3112                print(($#{$difftree} + 1) . " files changed:\n");
3113        }
3114        print "</div>\n";
3115
3116        print "<table class=\"" .
3117              (@parents > 1 ? "combined " : "") .
3118              "diff_tree\">\n";
3119
3120        # header only for combined diff in 'commitdiff' view
3121        my $has_header = @$difftree && @parents > 1 && $action eq 'commitdiff';
3122        if ($has_header) {
3123                # table header
3124                print "<thead><tr>\n" .
3125                       "<th></th><th></th>\n"; # filename, patchN link
3126                for (my $i = 0; $i < @parents; $i++) {
3127                        my $par = $parents[$i];
3128                        print "<th>" .
3129                              $cgi->a({-href => href(action=>"commitdiff",
3130                                                     hash=>$hash, hash_parent=>$par),
3131                                       -title => 'commitdiff to parent number ' .
3132                                                  ($i+1) . ': ' . substr($par,0,7)},
3133                                      $i+1) .
3134                              "&nbsp;</th>\n";
3135                }
3136                print "</tr></thead>\n<tbody>\n";
3137        }
3138
3139        my $alternate = 1;
3140        my $patchno = 0;
3141        foreach my $line (@{$difftree}) {
3142                my $diff = parsed_difftree_line($line);
3143
3144                if ($alternate) {
3145                        print "<tr class=\"dark\">\n";
3146                } else {
3147                        print "<tr class=\"light\">\n";
3148                }
3149                $alternate ^= 1;
3150
3151                if (exists $diff->{'nparents'}) { # combined diff
3152
3153                        fill_from_file_info($diff, @parents)
3154                                unless exists $diff->{'from_file'};
3155
3156                        if (!is_deleted($diff)) {
3157                                # file exists in the result (child) commit
3158                                print "<td>" .
3159                                      $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
3160                                                             file_name=>$diff->{'to_file'},
3161                                                             hash_base=>$hash),
3162                                              -class => "list"}, esc_path($diff->{'to_file'})) .
3163                                      "</td>\n";
3164                        } else {
3165                                print "<td>" .
3166                                      esc_path($diff->{'to_file'}) .
3167                                      "</td>\n";
3168                        }
3169
3170                        if ($action eq 'commitdiff') {
3171                                # link to patch
3172                                $patchno++;
3173                                print "<td class=\"link\">" .
3174                                      $cgi->a({-href => "#patch$patchno"}, "patch") .
3175                                      " | " .
3176                                      "</td>\n";
3177                        }
3178
3179                        my $has_history = 0;
3180                        my $not_deleted = 0;
3181                        for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
3182                                my $hash_parent = $parents[$i];
3183                                my $from_hash = $diff->{'from_id'}[$i];
3184                                my $from_path = $diff->{'from_file'}[$i];
3185                                my $status = $diff->{'status'}[$i];
3186
3187                                $has_history ||= ($status ne 'A');
3188                                $not_deleted ||= ($status ne 'D');
3189
3190                                if ($status eq 'A') {
3191                                        print "<td  class=\"link\" align=\"right\"> | </td>\n";
3192                                } elsif ($status eq 'D') {
3193                                        print "<td class=\"link\">" .
3194                                              $cgi->a({-href => href(action=>"blob",
3195                                                                     hash_base=>$hash,
3196                                                                     hash=>$from_hash,
3197                                                                     file_name=>$from_path)},
3198                                                      "blob" . ($i+1)) .
3199                                              " | </td>\n";
3200                                } else {
3201                                        if ($diff->{'to_id'} eq $from_hash) {
3202                                                print "<td class=\"link nochange\">";
3203                                        } else {
3204                                                print "<td class=\"link\">";
3205                                        }
3206                                        print $cgi->a({-href => href(action=>"blobdiff",
3207                                                                     hash=>$diff->{'to_id'},
3208                                                                     hash_parent=>$from_hash,
3209                                                                     hash_base=>$hash,
3210                                                                     hash_parent_base=>$hash_parent,
3211                                                                     file_name=>$diff->{'to_file'},
3212                                                                     file_parent=>$from_path)},
3213                                                      "diff" . ($i+1)) .
3214                                              " | </td>\n";
3215                                }
3216                        }
3217
3218                        print "<td class=\"link\">";
3219                        if ($not_deleted) {
3220                                print $cgi->a({-href => href(action=>"blob",
3221                                                             hash=>$diff->{'to_id'},
3222                                                             file_name=>$diff->{'to_file'},
3223                                                             hash_base=>$hash)},
3224                                              "blob");
3225                                print " | " if ($has_history);
3226                        }
3227                        if ($has_history) {
3228                                print $cgi->a({-href => href(action=>"history",
3229                                                             file_name=>$diff->{'to_file'},
3230                                                             hash_base=>$hash)},
3231                                              "history");
3232                        }
3233                        print "</td>\n";
3234
3235                        print "</tr>\n";
3236                        next; # instead of 'else' clause, to avoid extra indent
3237                }
3238                # else ordinary diff
3239
3240                my ($to_mode_oct, $to_mode_str, $to_file_type);
3241                my ($from_mode_oct, $from_mode_str, $from_file_type);
3242                if ($diff->{'to_mode'} ne ('0' x 6)) {
3243                        $to_mode_oct = oct $diff->{'to_mode'};
3244                        if (S_ISREG($to_mode_oct)) { # only for regular file
3245                                $to_mode_str = sprintf("%04o", $to_mode_oct & 0777); # permission bits
3246                        }
3247                        $to_file_type = file_type($diff->{'to_mode'});
3248                }
3249                if ($diff->{'from_mode'} ne ('0' x 6)) {
3250                        $from_mode_oct = oct $diff->{'from_mode'};
3251                        if (S_ISREG($to_mode_oct)) { # only for regular file
3252                                $from_mode_str = sprintf("%04o", $from_mode_oct & 0777); # permission bits
3253                        }
3254                        $from_file_type = file_type($diff->{'from_mode'});
3255                }
3256
3257                if ($diff->{'status'} eq "A") { # created
3258                        my $mode_chng = "<span class=\"file_status new\">[new $to_file_type";
3259                        $mode_chng   .= " with mode: $to_mode_str" if $to_mode_str;
3260                        $mode_chng   .= "]</span>";
3261                        print "<td>";
3262                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
3263                                                     hash_base=>$hash, file_name=>$diff->{'file'}),
3264                                      -class => "list"}, esc_path($diff->{'file'}));
3265                        print "</td>\n";
3266                        print "<td>$mode_chng</td>\n";
3267                        print "<td class=\"link\">";
3268                        if ($action eq 'commitdiff') {
3269                                # link to patch
3270                                $patchno++;
3271                                print $cgi->a({-href => "#patch$patchno"}, "patch");
3272                                print " | ";
3273                        }
3274                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
3275                                                     hash_base=>$hash, file_name=>$diff->{'file'})},
3276                                      "blob");
3277                        print "</td>\n";
3278
3279                } elsif ($diff->{'status'} eq "D") { # deleted
3280                        my $mode_chng = "<span class=\"file_status deleted\">[deleted $from_file_type]</span>";
3281                        print "<td>";
3282                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
3283                                                     hash_base=>$parent, file_name=>$diff->{'file'}),
3284                                       -class => "list"}, esc_path($diff->{'file'}));
3285                        print "</td>\n";
3286                        print "<td>$mode_chng</td>\n";
3287                        print "<td class=\"link\">";
3288                        if ($action eq 'commitdiff') {
3289                                # link to patch
3290                                $patchno++;
3291                                print $cgi->a({-href => "#patch$patchno"}, "patch");
3292                                print " | ";
3293                        }
3294                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
3295                                                     hash_base=>$parent, file_name=>$diff->{'file'})},
3296                                      "blob") . " | ";
3297                        if ($have_blame) {
3298                                print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
3299                                                             file_name=>$diff->{'file'})},
3300                                              "blame") . " | ";
3301                        }
3302                        print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
3303                                                     file_name=>$diff->{'file'})},
3304                                      "history");
3305                        print "</td>\n";
3306
3307                } elsif ($diff->{'status'} eq "M" || $diff->{'status'} eq "T") { # modified, or type changed
3308                        my $mode_chnge = "";
3309                        if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
3310                                $mode_chnge = "<span class=\"file_status mode_chnge\">[changed";
3311                                if ($from_file_type ne $to_file_type) {
3312                                        $mode_chnge .= " from $from_file_type to $to_file_type";
3313                                }
3314                                if (($from_mode_oct & 0777) != ($to_mode_oct & 0777)) {
3315                                        if ($from_mode_str && $to_mode_str) {
3316                                                $mode_chnge .= " mode: $from_mode_str->$to_mode_str";
3317                                        } elsif ($to_mode_str) {
3318                                                $mode_chnge .= " mode: $to_mode_str";
3319                                        }
3320                                }
3321                                $mode_chnge .= "]</span>\n";
3322                        }
3323                        print "<td>";
3324                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
3325                                                     hash_base=>$hash, file_name=>$diff->{'file'}),
3326                                      -class => "list"}, esc_path($diff->{'file'}));
3327                        print "</td>\n";
3328                        print "<td>$mode_chnge</td>\n";
3329                        print "<td class=\"link\">";
3330                        if ($action eq 'commitdiff') {
3331                                # link to patch
3332                                $patchno++;
3333                                print $cgi->a({-href => "#patch$patchno"}, "patch") .
3334                                      " | ";
3335                        } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
3336                                # "commit" view and modified file (not onlu mode changed)
3337                                print $cgi->a({-href => href(action=>"blobdiff",
3338                                                             hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
3339                                                             hash_base=>$hash, hash_parent_base=>$parent,
3340                                                             file_name=>$diff->{'file'})},
3341                                              "diff") .
3342                                      " | ";
3343                        }
3344                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
3345                                                     hash_base=>$hash, file_name=>$diff->{'file'})},
3346                                       "blob") . " | ";
3347                        if ($have_blame) {
3348                                print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
3349                                                             file_name=>$diff->{'file'})},
3350                                              "blame") . " | ";
3351                        }
3352                        print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
3353                                                     file_name=>$diff->{'file'})},
3354                                      "history");
3355                        print "</td>\n";
3356
3357                } elsif ($diff->{'status'} eq "R" || $diff->{'status'} eq "C") { # renamed or copied
3358                        my %status_name = ('R' => 'moved', 'C' => 'copied');
3359                        my $nstatus = $status_name{$diff->{'status'}};
3360                        my $mode_chng = "";
3361                        if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
3362                                # mode also for directories, so we cannot use $to_mode_str
3363                                $mode_chng = sprintf(", mode: %04o", $to_mode_oct & 0777);
3364                        }
3365                        print "<td>" .
3366                              $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
3367                                                     hash=>$diff->{'to_id'}, file_name=>$diff->{'to_file'}),
3368                                      -class => "list"}, esc_path($diff->{'to_file'})) . "</td>\n" .
3369                              "<td><span class=\"file_status $nstatus\">[$nstatus from " .
3370                              $cgi->a({-href => href(action=>"blob", hash_base=>$parent,
3371                                                     hash=>$diff->{'from_id'}, file_name=>$diff->{'from_file'}),
3372                                      -class => "list"}, esc_path($diff->{'from_file'})) .
3373                              " with " . (int $diff->{'similarity'}) . "% similarity$mode_chng]</span></td>\n" .
3374                              "<td class=\"link\">";
3375                        if ($action eq 'commitdiff') {
3376                                # link to patch
3377                                $patchno++;
3378                                print $cgi->a({-href => "#patch$patchno"}, "patch") .
3379                                      " | ";
3380                        } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
3381                                # "commit" view and modified file (not only pure rename or copy)
3382                                print $cgi->a({-href => href(action=>"blobdiff",
3383                                                             hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
3384                                                             hash_base=>$hash, hash_parent_base=>$parent,
3385                                                             file_name=>$diff->{'to_file'}, file_parent=>$diff->{'from_file'})},
3386                                              "diff") .
3387                                      " | ";
3388                        }
3389                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
3390                                                     hash_base=>$parent, file_name=>$diff->{'to_file'})},
3391                                      "blob") . " | ";
3392                        if ($have_blame) {
3393                                print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
3394                                                             file_name=>$diff->{'to_file'})},
3395                                              "blame") . " | ";
3396                        }
3397                        print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
3398                                                    file_name=>$diff->{'to_file'})},
3399                                      "history");
3400                        print "</td>\n";
3401
3402                } # we should not encounter Unmerged (U) or Unknown (X) status
3403                print "</tr>\n";
3404        }
3405        print "</tbody>" if $has_header;
3406        print "</table>\n";
3407}
3408
3409sub git_patchset_body {
3410        my ($fd, $difftree, $hash, @hash_parents) = @_;
3411        my ($hash_parent) = $hash_parents[0];
3412
3413        my $is_combined = (@hash_parents > 1);
3414        my $patch_idx = 0;
3415        my $patch_number = 0;
3416        my $patch_line;
3417        my $diffinfo;
3418        my $to_name;
3419        my (%from, %to);
3420
3421        print "<div class=\"patchset\">\n";
3422
3423        # skip to first patch
3424        while ($patch_line = <$fd>) {
3425                chomp $patch_line;
3426
3427                last if ($patch_line =~ m/^diff /);
3428        }
3429
3430 PATCH:
3431        while ($patch_line) {
3432
3433                # parse "git diff" header line
3434                if ($patch_line =~ m/^diff --git (\"(?:[^\\\"]*(?:\\.[^\\\"]*)*)\"|[^ "]*) (.*)$/) {
3435                        # $1 is from_name, which we do not use
3436                        $to_name = unquote($2);
3437                        $to_name =~ s!^b/!!;
3438                } elsif ($patch_line =~ m/^diff --(cc|combined) ("?.*"?)$/) {
3439                        # $1 is 'cc' or 'combined', which we do not use
3440                        $to_name = unquote($2);
3441                } else {
3442                        $to_name = undef;
3443                }
3444
3445                # check if current patch belong to current raw line
3446                # and parse raw git-diff line if needed
3447                if (is_patch_split($diffinfo, { 'to_file' => $to_name })) {
3448                        # this is continuation of a split patch
3449                        print "<div class=\"patch cont\">\n";
3450                } else {
3451                        # advance raw git-diff output if needed
3452                        $patch_idx++ if defined $diffinfo;
3453
3454                        # read and prepare patch information
3455                        $diffinfo = parsed_difftree_line($difftree->[$patch_idx]);
3456
3457                        # compact combined diff output can have some patches skipped
3458                        # find which patch (using pathname of result) we are at now;
3459                        if ($is_combined) {
3460                                while ($to_name ne $diffinfo->{'to_file'}) {
3461                                        print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n" .
3462                                              format_diff_cc_simplified($diffinfo, @hash_parents) .
3463                                              "</div>\n";  # class="patch"
3464
3465                                        $patch_idx++;
3466                                        $patch_number++;
3467
3468                                        last if $patch_idx > $#$difftree;
3469                                        $diffinfo = parsed_difftree_line($difftree->[$patch_idx]);
3470                                }
3471                        }
3472
3473                        # modifies %from, %to hashes
3474                        parse_from_to_diffinfo($diffinfo, \%from, \%to, @hash_parents);
3475
3476                        # this is first patch for raw difftree line with $patch_idx index
3477                        # we index @$difftree array from 0, but number patches from 1
3478                        print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n";
3479                }
3480
3481                # git diff header
3482                #assert($patch_line =~ m/^diff /) if DEBUG;
3483                #assert($patch_line !~ m!$/$!) if DEBUG; # is chomp-ed
3484                $patch_number++;
3485                # print "git diff" header
3486                print format_git_diff_header_line($patch_line, $diffinfo,
3487                                                  \%from, \%to);
3488
3489                # print extended diff header
3490                print "<div class=\"diff extended_header\">\n";
3491        EXTENDED_HEADER:
3492                while ($patch_line = <$fd>) {
3493                        chomp $patch_line;
3494
3495                        last EXTENDED_HEADER if ($patch_line =~ m/^--- |^diff /);
3496
3497                        print format_extended_diff_header_line($patch_line, $diffinfo,
3498                                                               \%from, \%to);
3499                }
3500                print "</div>\n"; # class="diff extended_header"
3501
3502                # from-file/to-file diff header
3503                if (! $patch_line) {
3504                        print "</div>\n"; # class="patch"
3505                        last PATCH;
3506                }
3507                next PATCH if ($patch_line =~ m/^diff /);
3508                #assert($patch_line =~ m/^---/) if DEBUG;
3509
3510                my $last_patch_line = $patch_line;
3511                $patch_line = <$fd>;
3512                chomp $patch_line;
3513                #assert($patch_line =~ m/^\+\+\+/) if DEBUG;
3514
3515                print format_diff_from_to_header($last_patch_line, $patch_line,
3516                                                 $diffinfo, \%from, \%to,
3517                                                 @hash_parents);
3518
3519                # the patch itself
3520        LINE:
3521                while ($patch_line = <$fd>) {
3522                        chomp $patch_line;
3523
3524                        next PATCH if ($patch_line =~ m/^diff /);
3525
3526                        print format_diff_line($patch_line, \%from, \%to);
3527                }
3528
3529        } continue {
3530                print "</div>\n"; # class="patch"
3531        }
3532
3533        # for compact combined (--cc) format, with chunk and patch simpliciaction
3534        # patchset might be empty, but there might be unprocessed raw lines
3535        for (++$patch_idx if $patch_number > 0;
3536             $patch_idx < @$difftree;
3537             ++$patch_idx) {
3538                # read and prepare patch information
3539                $diffinfo = parsed_difftree_line($difftree->[$patch_idx]);
3540
3541                # generate anchor for "patch" links in difftree / whatchanged part
3542                print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n" .
3543                      format_diff_cc_simplified($diffinfo, @hash_parents) .
3544                      "</div>\n";  # class="patch"
3545
3546                $patch_number++;
3547        }
3548
3549        if ($patch_number == 0) {
3550                if (@hash_parents > 1) {
3551                        print "<div class=\"diff nodifferences\">Trivial merge</div>\n";
3552                } else {
3553                        print "<div class=\"diff nodifferences\">No differences found</div>\n";
3554                }
3555        }
3556
3557        print "</div>\n"; # class="patchset"
3558}
3559
3560# . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3561
3562# fills project list info (age, description, owner, forks) for each
3563# project in the list, removing invalid projects from returned list
3564# NOTE: modifies $projlist, but does not remove entries from it
3565sub fill_project_list_info {
3566        my ($projlist, $check_forks) = @_;
3567        my @projects;
3568
3569 PROJECT:
3570        foreach my $pr (@$projlist) {
3571                my (@activity) = git_get_last_activity($pr->{'path'});
3572                unless (@activity) {
3573                        next PROJECT;
3574                }
3575                ($pr->{'age'}, $pr->{'age_string'}) = @activity;
3576                if (!defined $pr->{'descr'}) {
3577                        my $descr = git_get_project_description($pr->{'path'}) || "";
3578                        $descr = to_utf8($descr);
3579                        $pr->{'descr_long'} = $descr;
3580                        $pr->{'descr'} = chop_str($descr, $projects_list_description_width, 5);
3581                }
3582                if (!defined $pr->{'owner'}) {
3583                        $pr->{'owner'} = git_get_project_owner("$pr->{'path'}") || "";
3584                }
3585                if ($check_forks) {
3586                        my $pname = $pr->{'path'};
3587                        if (($pname =~ s/\.git$//) &&
3588                            ($pname !~ /\/$/) &&
3589                            (-d "$projectroot/$pname")) {
3590                                $pr->{'forks'} = "-d $projectroot/$pname";
3591                        }       else {
3592                                $pr->{'forks'} = 0;
3593                        }
3594                }
3595                push @projects, $pr;
3596        }
3597
3598        return @projects;
3599}
3600
3601sub git_project_list_body {
3602        my ($projlist, $order, $from, $to, $extra, $no_header) = @_;
3603
3604        my ($check_forks) = gitweb_check_feature('forks');
3605        my @projects = fill_project_list_info($projlist, $check_forks);
3606
3607        $order ||= $default_projects_order;
3608        $from = 0 unless defined $from;
3609        $to = $#projects if (!defined $to || $#projects < $to);
3610
3611        print "<table class=\"project_list\">\n";
3612        unless ($no_header) {
3613                print "<tr>\n";
3614                if ($check_forks) {
3615                        print "<th></th>\n";
3616                }
3617                if ($order eq "project") {
3618                        @projects = sort {$a->{'path'} cmp $b->{'path'}} @projects;
3619                        print "<th>Project</th>\n";
3620                } else {
3621                        print "<th>" .
3622                              $cgi->a({-href => href(project=>undef, order=>'project'),
3623                                       -class => "header"}, "Project") .
3624                              "</th>\n";
3625                }
3626                if ($order eq "descr") {
3627                        @projects = sort {$a->{'descr'} cmp $b->{'descr'}} @projects;
3628                        print "<th>Description</th>\n";
3629                } else {
3630                        print "<th>" .
3631                              $cgi->a({-href => href(project=>undef, order=>'descr'),
3632                                       -class => "header"}, "Description") .
3633                              "</th>\n";
3634                }
3635                if ($order eq "owner") {
3636                        @projects = sort {$a->{'owner'} cmp $b->{'owner'}} @projects;
3637                        print "<th>Owner</th>\n";
3638                } else {
3639                        print "<th>" .
3640                              $cgi->a({-href => href(project=>undef, order=>'owner'),
3641                                       -class => "header"}, "Owner") .
3642                              "</th>\n";
3643                }
3644                if ($order eq "age") {
3645                        @projects = sort {$a->{'age'} <=> $b->{'age'}} @projects;
3646                        print "<th>Last Change</th>\n";
3647                } else {
3648                        print "<th>" .
3649                              $cgi->a({-href => href(project=>undef, order=>'age'),
3650                                       -class => "header"}, "Last Change") .
3651                              "</th>\n";
3652                }
3653                print "<th></th>\n" .
3654                      "</tr>\n";
3655        }
3656        my $alternate = 1;
3657        for (my $i = $from; $i <= $to; $i++) {
3658                my $pr = $projects[$i];
3659                if ($alternate) {
3660                        print "<tr class=\"dark\">\n";
3661                } else {
3662                        print "<tr class=\"light\">\n";
3663                }
3664                $alternate ^= 1;
3665                if ($check_forks) {
3666                        print "<td>";
3667                        if ($pr->{'forks'}) {
3668                                print "<!-- $pr->{'forks'} -->\n";
3669                                print $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "+");
3670                        }
3671                        print "</td>\n";
3672                }
3673                print "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
3674                                        -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
3675                      "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
3676                                        -class => "list", -title => $pr->{'descr_long'}},
3677                                        esc_html($pr->{'descr'})) . "</td>\n" .
3678                      "<td><i>" . chop_and_escape_str($pr->{'owner'}, 15) . "</i></td>\n";
3679                print "<td class=\"". age_class($pr->{'age'}) . "\">" .
3680                      (defined $pr->{'age_string'} ? $pr->{'age_string'} : "No commits") . "</td>\n" .
3681                      "<td class=\"link\">" .
3682                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
3683                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"shortlog")}, "shortlog") . " | " .
3684                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") . " | " .
3685                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"tree")}, "tree") .
3686                      ($pr->{'forks'} ? " | " . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "forks") : '') .
3687                      "</td>\n" .
3688                      "</tr>\n";
3689        }
3690        if (defined $extra) {
3691                print "<tr>\n";
3692                if ($check_forks) {
3693                        print "<td></td>\n";
3694                }
3695                print "<td colspan=\"5\">$extra</td>\n" .
3696                      "</tr>\n";
3697        }
3698        print "</table>\n";
3699}
3700
3701sub git_shortlog_body {
3702        # uses global variable $project
3703        my ($commitlist, $from, $to, $refs, $extra) = @_;
3704
3705        $from = 0 unless defined $from;
3706        $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
3707
3708        print "<table class=\"shortlog\">\n";
3709        my $alternate = 1;
3710        for (my $i = $from; $i <= $to; $i++) {
3711                my %co = %{$commitlist->[$i]};
3712                my $commit = $co{'id'};
3713                my $ref = format_ref_marker($refs, $commit);
3714                if ($alternate) {
3715                        print "<tr class=\"dark\">\n";
3716                } else {
3717                        print "<tr class=\"light\">\n";
3718                }
3719                $alternate ^= 1;
3720                my $author = chop_and_escape_str($co{'author_name'}, 10);
3721                # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
3722                print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3723                      "<td><i>" . $author . "</i></td>\n" .
3724                      "<td>";
3725                print format_subject_html($co{'title'}, $co{'title_short'},
3726                                          href(action=>"commit", hash=>$commit), $ref);
3727                print "</td>\n" .
3728                      "<td class=\"link\">" .
3729                      $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
3730                      $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
3731                      $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree");
3732                my $snapshot_links = format_snapshot_links($commit);
3733                if (defined $snapshot_links) {
3734                        print " | " . $snapshot_links;
3735                }
3736                print "</td>\n" .
3737                      "</tr>\n";
3738        }
3739        if (defined $extra) {
3740                print "<tr>\n" .
3741                      "<td colspan=\"4\">$extra</td>\n" .
3742                      "</tr>\n";
3743        }
3744        print "</table>\n";
3745}
3746
3747sub git_history_body {
3748        # Warning: assumes constant type (blob or tree) during history
3749        my ($commitlist, $from, $to, $refs, $hash_base, $ftype, $extra) = @_;
3750
3751        $from = 0 unless defined $from;
3752        $to = $#{$commitlist} unless (defined $to && $to <= $#{$commitlist});
3753
3754        print "<table class=\"history\">\n";
3755        my $alternate = 1;
3756        for (my $i = $from; $i <= $to; $i++) {
3757                my %co = %{$commitlist->[$i]};
3758                if (!%co) {
3759                        next;
3760                }
3761                my $commit = $co{'id'};
3762
3763                my $ref = format_ref_marker($refs, $commit);
3764
3765                if ($alternate) {
3766                        print "<tr class=\"dark\">\n";
3767                } else {
3768                        print "<tr class=\"light\">\n";
3769                }
3770                $alternate ^= 1;
3771        # shortlog uses      chop_str($co{'author_name'}, 10)
3772                my $author = chop_and_escape_str($co{'author_name'}, 15, 3);
3773                print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3774                      "<td><i>" . $author . "</i></td>\n" .
3775                      "<td>";
3776                # originally git_history used chop_str($co{'title'}, 50)
3777                print format_subject_html($co{'title'}, $co{'title_short'},
3778                                          href(action=>"commit", hash=>$commit), $ref);
3779                print "</td>\n" .
3780                      "<td class=\"link\">" .
3781                      $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype) . " | " .
3782                      $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
3783
3784                if ($ftype eq 'blob') {
3785                        my $blob_current = git_get_hash_by_path($hash_base, $file_name);
3786                        my $blob_parent  = git_get_hash_by_path($commit, $file_name);
3787                        if (defined $blob_current && defined $blob_parent &&
3788                                        $blob_current ne $blob_parent) {
3789                                print " | " .
3790                                        $cgi->a({-href => href(action=>"blobdiff",
3791                                                               hash=>$blob_current, hash_parent=>$blob_parent,
3792                                                               hash_base=>$hash_base, hash_parent_base=>$commit,
3793                                                               file_name=>$file_name)},
3794                                                "diff to current");
3795                        }
3796                }
3797                print "</td>\n" .
3798                      "</tr>\n";
3799        }
3800        if (defined $extra) {
3801                print "<tr>\n" .
3802                      "<td colspan=\"4\">$extra</td>\n" .
3803                      "</tr>\n";
3804        }
3805        print "</table>\n";
3806}
3807
3808sub git_tags_body {
3809        # uses global variable $project
3810        my ($taglist, $from, $to, $extra) = @_;
3811        $from = 0 unless defined $from;
3812        $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
3813
3814        print "<table class=\"tags\">\n";
3815        my $alternate = 1;
3816        for (my $i = $from; $i <= $to; $i++) {
3817                my $entry = $taglist->[$i];
3818                my %tag = %$entry;
3819                my $comment = $tag{'subject'};
3820                my $comment_short;
3821                if (defined $comment) {
3822                        $comment_short = chop_str($comment, 30, 5);
3823                }
3824                if ($alternate) {
3825                        print "<tr class=\"dark\">\n";
3826                } else {
3827                        print "<tr class=\"light\">\n";
3828                }
3829                $alternate ^= 1;
3830                if (defined $tag{'age'}) {
3831                        print "<td><i>$tag{'age'}</i></td>\n";
3832                } else {
3833                        print "<td></td>\n";
3834                }
3835                print "<td>" .
3836                      $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
3837                               -class => "list name"}, esc_html($tag{'name'})) .
3838                      "</td>\n" .
3839                      "<td>";
3840                if (defined $comment) {
3841                        print format_subject_html($comment, $comment_short,
3842                                                  href(action=>"tag", hash=>$tag{'id'}));
3843                }
3844                print "</td>\n" .
3845                      "<td class=\"selflink\">";
3846                if ($tag{'type'} eq "tag") {
3847                        print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
3848                } else {
3849                        print "&nbsp;";
3850                }
3851                print "</td>\n" .
3852                      "<td class=\"link\">" . " | " .
3853                      $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
3854                if ($tag{'reftype'} eq "commit") {
3855                        print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'fullname'})}, "shortlog") .
3856                              " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'fullname'})}, "log");
3857                } elsif ($tag{'reftype'} eq "blob") {
3858                        print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
3859                }
3860                print "</td>\n" .
3861                      "</tr>";
3862        }
3863        if (defined $extra) {
3864                print "<tr>\n" .
3865                      "<td colspan=\"5\">$extra</td>\n" .
3866                      "</tr>\n";
3867        }
3868        print "</table>\n";
3869}
3870
3871sub git_heads_body {
3872        # uses global variable $project
3873        my ($headlist, $head, $from, $to, $extra) = @_;
3874        $from = 0 unless defined $from;
3875        $to = $#{$headlist} if (!defined $to || $#{$headlist} < $to);
3876
3877        print "<table class=\"heads\">\n";
3878        my $alternate = 1;
3879        for (my $i = $from; $i <= $to; $i++) {
3880                my $entry = $headlist->[$i];
3881                my %ref = %$entry;
3882                my $curr = $ref{'id'} eq $head;
3883                if ($alternate) {
3884                        print "<tr class=\"dark\">\n";
3885                } else {
3886                        print "<tr class=\"light\">\n";
3887                }
3888                $alternate ^= 1;
3889                print "<td><i>$ref{'age'}</i></td>\n" .
3890                      ($curr ? "<td class=\"current_head\">" : "<td>") .
3891                      $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'fullname'}),
3892                               -class => "list name"},esc_html($ref{'name'})) .
3893                      "</td>\n" .
3894                      "<td class=\"link\">" .
3895                      $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'fullname'})}, "shortlog") . " | " .
3896                      $cgi->a({-href => href(action=>"log", hash=>$ref{'fullname'})}, "log") . " | " .
3897                      $cgi->a({-href => href(action=>"tree", hash=>$ref{'fullname'}, hash_base=>$ref{'name'})}, "tree") .
3898                      "</td>\n" .
3899                      "</tr>";
3900        }
3901        if (defined $extra) {
3902                print "<tr>\n" .
3903                      "<td colspan=\"3\">$extra</td>\n" .
3904                      "</tr>\n";
3905        }
3906        print "</table>\n";
3907}
3908
3909sub git_search_grep_body {
3910        my ($commitlist, $from, $to, $extra) = @_;
3911        $from = 0 unless defined $from;
3912        $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
3913
3914        print "<table class=\"commit_search\">\n";
3915        my $alternate = 1;
3916        for (my $i = $from; $i <= $to; $i++) {
3917                my %co = %{$commitlist->[$i]};
3918                if (!%co) {
3919                        next;
3920                }
3921                my $commit = $co{'id'};
3922                if ($alternate) {
3923                        print "<tr class=\"dark\">\n";
3924                } else {
3925                        print "<tr class=\"light\">\n";
3926                }
3927                $alternate ^= 1;
3928                my $author = chop_and_escape_str($co{'author_name'}, 15, 5);
3929                print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3930                      "<td><i>" . $author . "</i></td>\n" .
3931                      "<td>" .
3932                      $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
3933                               -class => "list subject"},
3934                              chop_and_escape_str($co{'title'}, 50) . "<br/>");
3935                my $comment = $co{'comment'};
3936                foreach my $line (@$comment) {
3937                        if ($line =~ m/^(.*?)($search_regexp)(.*)$/i) {
3938                                my ($lead, $match, $trail) = ($1, $2, $3);
3939                                $match = chop_str($match, 70, 5, 'center');
3940                                my $contextlen = int((80 - length($match))/2);
3941                                $contextlen = 30 if ($contextlen > 30);
3942                                $lead  = chop_str($lead,  $contextlen, 10, 'left');
3943                                $trail = chop_str($trail, $contextlen, 10, 'right');
3944
3945                                $lead  = esc_html($lead);
3946                                $match = esc_html($match);
3947                                $trail = esc_html($trail);
3948
3949                                print "$lead<span class=\"match\">$match</span>$trail<br />";
3950                        }
3951                }
3952                print "</td>\n" .
3953                      "<td class=\"link\">" .
3954                      $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
3955                      " | " .
3956                      $cgi->a({-href => href(action=>"commitdiff", hash=>$co{'id'})}, "commitdiff") .
3957                      " | " .
3958                      $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
3959                print "</td>\n" .
3960                      "</tr>\n";
3961        }
3962        if (defined $extra) {
3963                print "<tr>\n" .
3964                      "<td colspan=\"3\">$extra</td>\n" .
3965                      "</tr>\n";
3966        }
3967        print "</table>\n";
3968}
3969
3970## ======================================================================
3971## ======================================================================
3972## actions
3973
3974sub git_project_list {
3975        my $order = $cgi->param('o');
3976        if (defined $order && $order !~ m/none|project|descr|owner|age/) {
3977                die_error(undef, "Unknown order parameter");
3978        }
3979
3980        my @list = git_get_projects_list();
3981        if (!@list) {
3982                die_error(undef, "No projects found");
3983        }
3984
3985        git_header_html();
3986        if (-f $home_text) {
3987                print "<div class=\"index_include\">\n";
3988                open (my $fd, $home_text);
3989                print <$fd>;
3990                close $fd;
3991                print "</div>\n";
3992        }
3993        git_project_list_body(\@list, $order);
3994        git_footer_html();
3995}
3996
3997sub git_forks {
3998        my $order = $cgi->param('o');
3999        if (defined $order && $order !~ m/none|project|descr|owner|age/) {
4000                die_error(undef, "Unknown order parameter");
4001        }
4002
4003        my @list = git_get_projects_list($project);
4004        if (!@list) {
4005                die_error(undef, "No forks found");
4006        }
4007
4008        git_header_html();
4009        git_print_page_nav('','');
4010        git_print_header_div('summary', "$project forks");
4011        git_project_list_body(\@list, $order);
4012        git_footer_html();
4013}
4014
4015sub git_project_index {
4016        my @projects = git_get_projects_list($project);
4017
4018        print $cgi->header(
4019                -type => 'text/plain',
4020                -charset => 'utf-8',
4021                -content_disposition => 'inline; filename="index.aux"');
4022
4023        foreach my $pr (@projects) {
4024                if (!exists $pr->{'owner'}) {
4025                        $pr->{'owner'} = git_get_project_owner("$pr->{'path'}");
4026                }
4027
4028                my ($path, $owner) = ($pr->{'path'}, $pr->{'owner'});
4029                # quote as in CGI::Util::encode, but keep the slash, and use '+' for ' '
4030                $path  =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
4031                $owner =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
4032                $path  =~ s/ /\+/g;
4033                $owner =~ s/ /\+/g;
4034
4035                print "$path $owner\n";
4036        }
4037}
4038
4039sub git_summary {
4040        my $descr = git_get_project_description($project) || "none";
4041        my %co = parse_commit("HEAD");
4042        my %cd = %co ? parse_date($co{'committer_epoch'}, $co{'committer_tz'}) : ();
4043        my $head = $co{'id'};
4044
4045        my $owner = git_get_project_owner($project);
4046
4047        my $refs = git_get_references();
4048        # These get_*_list functions return one more to allow us to see if
4049        # there are more ...
4050        my @taglist  = git_get_tags_list(16);
4051        my @headlist = git_get_heads_list(16);
4052        my @forklist;
4053        my ($check_forks) = gitweb_check_feature('forks');
4054
4055        if ($check_forks) {
4056                @forklist = git_get_projects_list($project);
4057        }
4058
4059        git_header_html();
4060        git_print_page_nav('summary','', $head);
4061
4062        print "<div class=\"title\">&nbsp;</div>\n";
4063        print "<table class=\"projects_list\">\n" .
4064              "<tr><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
4065              "<tr><td>owner</td><td>" . esc_html($owner) . "</td></tr>\n";
4066        if (defined $cd{'rfc2822'}) {
4067                print "<tr><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n";
4068        }
4069
4070        # use per project git URL list in $projectroot/$project/cloneurl
4071        # or make project git URL from git base URL and project name
4072        my $url_tag = "URL";
4073        my @url_list = git_get_project_url_list($project);
4074        @url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
4075        foreach my $git_url (@url_list) {
4076                next unless $git_url;
4077                print "<tr><td>$url_tag</td><td>$git_url</td></tr>\n";
4078                $url_tag = "";
4079        }
4080        print "</table>\n";
4081
4082        if (-s "$projectroot/$project/README.html") {
4083                if (open my $fd, "$projectroot/$project/README.html") {
4084                        print "<div class=\"title\">readme</div>\n" .
4085                              "<div class=\"readme\">\n";
4086                        print $_ while (<$fd>);
4087                        print "\n</div>\n"; # class="readme"
4088                        close $fd;
4089                }
4090        }
4091
4092        # we need to request one more than 16 (0..15) to check if
4093        # those 16 are all
4094        my @commitlist = $head ? parse_commits($head, 17) : ();
4095        if (@commitlist) {
4096                git_print_header_div('shortlog');
4097                git_shortlog_body(\@commitlist, 0, 15, $refs,
4098                                  $#commitlist <=  15 ? undef :
4099                                  $cgi->a({-href => href(action=>"shortlog")}, "..."));
4100        }
4101
4102        if (@taglist) {
4103                git_print_header_div('tags');
4104                git_tags_body(\@taglist, 0, 15,
4105                              $#taglist <=  15 ? undef :
4106                              $cgi->a({-href => href(action=>"tags")}, "..."));
4107        }
4108
4109        if (@headlist) {
4110                git_print_header_div('heads');
4111                git_heads_body(\@headlist, $head, 0, 15,
4112                               $#headlist <= 15 ? undef :
4113                               $cgi->a({-href => href(action=>"heads")}, "..."));
4114        }
4115
4116        if (@forklist) {
4117                git_print_header_div('forks');
4118                git_project_list_body(\@forklist, undef, 0, 15,
4119                                      $#forklist <= 15 ? undef :
4120                                      $cgi->a({-href => href(action=>"forks")}, "..."),
4121                                      'noheader');
4122        }
4123
4124        git_footer_html();
4125}
4126
4127sub git_tag {
4128        my $head = git_get_head_hash($project);
4129        git_header_html();
4130        git_print_page_nav('','', $head,undef,$head);
4131        my %tag = parse_tag($hash);
4132
4133        if (! %tag) {
4134                die_error(undef, "Unknown tag object");
4135        }
4136
4137        git_print_header_div('commit', esc_html($tag{'name'}), $hash);
4138        print "<div class=\"title_text\">\n" .
4139              "<table class=\"object_header\">\n" .
4140              "<tr>\n" .
4141              "<td>object</td>\n" .
4142              "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
4143                               $tag{'object'}) . "</td>\n" .
4144              "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
4145                                              $tag{'type'}) . "</td>\n" .
4146              "</tr>\n";
4147        if (defined($tag{'author'})) {
4148                my %ad = parse_date($tag{'epoch'}, $tag{'tz'});
4149                print "<tr><td>author</td><td>" . esc_html($tag{'author'}) . "</td></tr>\n";
4150                print "<tr><td></td><td>" . $ad{'rfc2822'} .
4151                        sprintf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'}) .
4152                        "</td></tr>\n";
4153        }
4154        print "</table>\n\n" .
4155              "</div>\n";
4156        print "<div class=\"page_body\">";
4157        my $comment = $tag{'comment'};
4158        foreach my $line (@$comment) {
4159                chomp $line;
4160                print esc_html($line, -nbsp=>1) . "<br/>\n";
4161        }
4162        print "</div>\n";
4163        git_footer_html();
4164}
4165
4166sub git_blame2 {
4167        my $fd;
4168        my $ftype;
4169
4170        my ($have_blame) = gitweb_check_feature('blame');
4171        if (!$have_blame) {
4172                die_error('403 Permission denied', "Permission denied");
4173        }
4174        die_error('404 Not Found', "File name not defined") if (!$file_name);
4175        $hash_base ||= git_get_head_hash($project);
4176        die_error(undef, "Couldn't find base commit") unless ($hash_base);
4177        my %co = parse_commit($hash_base)
4178                or die_error(undef, "Reading commit failed");
4179        if (!defined $hash) {
4180                $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
4181                        or die_error(undef, "Error looking up file");
4182        }
4183        $ftype = git_get_type($hash);
4184        if ($ftype !~ "blob") {
4185                die_error('400 Bad Request', "Object is not a blob");
4186        }
4187        open ($fd, "-|", git_cmd(), "blame", '-p', '--',
4188              $file_name, $hash_base)
4189                or die_error(undef, "Open git-blame failed");
4190        git_header_html();
4191        my $formats_nav =
4192                $cgi->a({-href => href(action=>"blob", -replay=>1)},
4193                        "blob") .
4194                " | " .
4195                $cgi->a({-href => href(action=>"history", -replay=>1)},
4196                        "history") .
4197                " | " .
4198                $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
4199                        "HEAD");
4200        git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
4201        git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4202        git_print_page_path($file_name, $ftype, $hash_base);
4203        my @rev_color = (qw(light2 dark2));
4204        my $num_colors = scalar(@rev_color);
4205        my $current_color = 0;
4206        my $last_rev;
4207        print <<HTML;
4208<div class="page_body">
4209<table class="blame">
4210<tr><th>Commit</th><th>Line</th><th>Data</th></tr>
4211HTML
4212        my %metainfo = ();
4213        while (1) {
4214                $_ = <$fd>;
4215                last unless defined $_;
4216                my ($full_rev, $orig_lineno, $lineno, $group_size) =
4217                    /^([0-9a-f]{40}) (\d+) (\d+)(?: (\d+))?$/;
4218                if (!exists $metainfo{$full_rev}) {
4219                        $metainfo{$full_rev} = {};
4220                }
4221                my $meta = $metainfo{$full_rev};
4222                while (<$fd>) {
4223                        last if (s/^\t//);
4224                        if (/^(\S+) (.*)$/) {
4225                                $meta->{$1} = $2;
4226                        }
4227                }
4228                my $data = $_;
4229                chomp $data;
4230                my $rev = substr($full_rev, 0, 8);
4231                my $author = $meta->{'author'};
4232                my %date = parse_date($meta->{'author-time'},
4233                                      $meta->{'author-tz'});
4234                my $date = $date{'iso-tz'};
4235                if ($group_size) {
4236                        $current_color = ++$current_color % $num_colors;
4237                }
4238                print "<tr class=\"$rev_color[$current_color]\">\n";
4239                if ($group_size) {
4240                        print "<td class=\"sha1\"";
4241                        print " title=\"". esc_html($author) . ", $date\"";
4242                        print " rowspan=\"$group_size\"" if ($group_size > 1);
4243                        print ">";
4244                        print $cgi->a({-href => href(action=>"commit",
4245                                                     hash=>$full_rev,
4246                                                     file_name=>$file_name)},
4247                                      esc_html($rev));
4248                        print "</td>\n";
4249                }
4250                open (my $dd, "-|", git_cmd(), "rev-parse", "$full_rev^")
4251                        or die_error(undef, "Open git-rev-parse failed");
4252                my $parent_commit = <$dd>;
4253                close $dd;
4254                chomp($parent_commit);
4255                my $blamed = href(action => 'blame',
4256                                  file_name => $meta->{'filename'},
4257                                  hash_base => $parent_commit);
4258                print "<td class=\"linenr\">";
4259                print $cgi->a({ -href => "$blamed#l$orig_lineno",
4260                                -id => "l$lineno",
4261                                -class => "linenr" },
4262                              esc_html($lineno));
4263                print "</td>";
4264                print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
4265                print "</tr>\n";
4266        }
4267        print "</table>\n";
4268        print "</div>";
4269        close $fd
4270                or print "Reading blob failed\n";
4271        git_footer_html();
4272}
4273
4274sub git_blame {
4275        my $fd;
4276
4277        my ($have_blame) = gitweb_check_feature('blame');
4278        if (!$have_blame) {
4279                die_error('403 Permission denied', "Permission denied");
4280        }
4281        die_error('404 Not Found', "File name not defined") if (!$file_name);
4282        $hash_base ||= git_get_head_hash($project);
4283        die_error(undef, "Couldn't find base commit") unless ($hash_base);
4284        my %co = parse_commit($hash_base)
4285                or die_error(undef, "Reading commit failed");
4286        if (!defined $hash) {
4287                $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
4288                        or die_error(undef, "Error lookup file");
4289        }
4290        open ($fd, "-|", git_cmd(), "annotate", '-l', '-t', '-r', $file_name, $hash_base)
4291                or die_error(undef, "Open git-annotate failed");
4292        git_header_html();
4293        my $formats_nav =
4294                $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
4295                        "blob") .
4296                " | " .
4297                $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
4298                        "history") .
4299                " | " .
4300                $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
4301                        "HEAD");
4302        git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
4303        git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4304        git_print_page_path($file_name, 'blob', $hash_base);
4305        print "<div class=\"page_body\">\n";
4306        print <<HTML;
4307<table class="blame">
4308  <tr>
4309    <th>Commit</th>
4310    <th>Age</th>
4311    <th>Author</th>
4312    <th>Line</th>
4313    <th>Data</th>
4314  </tr>
4315HTML
4316        my @line_class = (qw(light dark));
4317        my $line_class_len = scalar (@line_class);
4318        my $line_class_num = $#line_class;
4319        while (my $line = <$fd>) {
4320                my $long_rev;
4321                my $short_rev;
4322                my $author;
4323                my $time;
4324                my $lineno;
4325                my $data;
4326                my $age;
4327                my $age_str;
4328                my $age_class;
4329
4330                chomp $line;
4331                $line_class_num = ($line_class_num + 1) % $line_class_len;
4332
4333                if ($line =~ m/^([0-9a-fA-F]{40})\t\(\s*([^\t]+)\t(\d+) [+-]\d\d\d\d\t(\d+)\)(.*)$/) {
4334                        $long_rev = $1;
4335                        $author   = $2;
4336                        $time     = $3;
4337                        $lineno   = $4;
4338                        $data     = $5;
4339                } else {
4340                        print qq(  <tr><td colspan="5" class="error">Unable to parse: $line</td></tr>\n);
4341                        next;
4342                }
4343                $short_rev  = substr ($long_rev, 0, 8);
4344                $age        = time () - $time;
4345                $age_str    = age_string ($age);
4346                $age_str    =~ s/ /&nbsp;/g;
4347                $age_class  = age_class($age);
4348                $author     = esc_html ($author);
4349                $author     =~ s/ /&nbsp;/g;
4350
4351                $data = untabify($data);
4352                $data = esc_html ($data);
4353
4354                print <<HTML;
4355  <tr class="$line_class[$line_class_num]">
4356    <td class="sha1"><a href="${\href (action=>"commit", hash=>$long_rev)}" class="text">$short_rev..</a></td>
4357    <td class="$age_class">$age_str</td>
4358    <td>$author</td>
4359    <td class="linenr"><a id="$lineno" href="#$lineno" class="linenr">$lineno</a></td>
4360    <td class="pre">$data</td>
4361  </tr>
4362HTML
4363        } # while (my $line = <$fd>)
4364        print "</table>\n\n";
4365        close $fd
4366                or print "Reading blob failed.\n";
4367        print "</div>";
4368        git_footer_html();
4369}
4370
4371sub git_tags {
4372        my $head = git_get_head_hash($project);
4373        git_header_html();
4374        git_print_page_nav('','', $head,undef,$head);
4375        git_print_header_div('summary', $project);
4376
4377        my @tagslist = git_get_tags_list();
4378        if (@tagslist) {
4379                git_tags_body(\@tagslist);
4380        }
4381        git_footer_html();
4382}
4383
4384sub git_heads {
4385        my $head = git_get_head_hash($project);
4386        git_header_html();
4387        git_print_page_nav('','', $head,undef,$head);
4388        git_print_header_div('summary', $project);
4389
4390        my @headslist = git_get_heads_list();
4391        if (@headslist) {
4392                git_heads_body(\@headslist, $head);
4393        }
4394        git_footer_html();
4395}
4396
4397sub git_blob_plain {
4398        my $type = shift;
4399        my $expires;
4400
4401        if (!defined $hash) {
4402                if (defined $file_name) {
4403                        my $base = $hash_base || git_get_head_hash($project);
4404                        $hash = git_get_hash_by_path($base, $file_name, "blob")
4405                                or die_error(undef, "Error lookup file");
4406                } else {
4407                        die_error(undef, "No file name defined");
4408                }
4409        } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4410                # blobs defined by non-textual hash id's can be cached
4411                $expires = "+1d";
4412        }
4413
4414        open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
4415                or die_error(undef, "Open git-cat-file blob '$hash' failed");
4416
4417        # content-type (can include charset)
4418        $type = blob_contenttype($fd, $file_name, $type);
4419
4420        # "save as" filename, even when no $file_name is given
4421        my $save_as = "$hash";
4422        if (defined $file_name) {
4423                $save_as = $file_name;
4424        } elsif ($type =~ m/^text\//) {
4425                $save_as .= '.txt';
4426        }
4427
4428        print $cgi->header(
4429                -type => $type,
4430                -expires => $expires,
4431                -content_disposition => 'inline; filename="' . $save_as . '"');
4432        undef $/;
4433        binmode STDOUT, ':raw';
4434        print <$fd>;
4435        binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
4436        $/ = "\n";
4437        close $fd;
4438}
4439
4440sub git_blob {
4441        my $expires;
4442
4443        if (!defined $hash) {
4444                if (defined $file_name) {
4445                        my $base = $hash_base || git_get_head_hash($project);
4446                        $hash = git_get_hash_by_path($base, $file_name, "blob")
4447                                or die_error(undef, "Error lookup file");
4448                } else {
4449                        die_error(undef, "No file name defined");
4450                }
4451        } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4452                # blobs defined by non-textual hash id's can be cached
4453                $expires = "+1d";
4454        }
4455
4456        my ($have_blame) = gitweb_check_feature('blame');
4457        open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
4458                or die_error(undef, "Couldn't cat $file_name, $hash");
4459        my $mimetype = blob_mimetype($fd, $file_name);
4460        if ($mimetype !~ m!^(?:text/|image/(?:gif|png|jpeg)$)! && -B $fd) {
4461                close $fd;
4462                return git_blob_plain($mimetype);
4463        }
4464        # we can have blame only for text/* mimetype
4465        $have_blame &&= ($mimetype =~ m!^text/!);
4466
4467        git_header_html(undef, $expires);
4468        my $formats_nav = '';
4469        if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4470                if (defined $file_name) {
4471                        if ($have_blame) {
4472                                $formats_nav .=
4473                                        $cgi->a({-href => href(action=>"blame", -replay=>1)},
4474                                                "blame") .
4475                                        " | ";
4476                        }
4477                        $formats_nav .=
4478                                $cgi->a({-href => href(action=>"history", -replay=>1)},
4479                                        "history") .
4480                                " | " .
4481                                $cgi->a({-href => href(action=>"blob_plain", -replay=>1)},
4482                                        "raw") .
4483                                " | " .
4484                                $cgi->a({-href => href(action=>"blob",
4485                                                       hash_base=>"HEAD", file_name=>$file_name)},
4486                                        "HEAD");
4487                } else {
4488                        $formats_nav .=
4489                                $cgi->a({-href => href(action=>"blob_plain", -replay=>1)},
4490                                        "raw");
4491                }
4492                git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
4493                git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4494        } else {
4495                print "<div class=\"page_nav\">\n" .
4496                      "<br/><br/></div>\n" .
4497                      "<div class=\"title\">$hash</div>\n";
4498        }
4499        git_print_page_path($file_name, "blob", $hash_base);
4500        print "<div class=\"page_body\">\n";
4501        if ($mimetype =~ m!^image/!) {
4502                print qq!<img type="$mimetype"!;
4503                if ($file_name) {
4504                        print qq! alt="$file_name" title="$file_name"!;
4505                }
4506                print qq! src="! .
4507                      href(action=>"blob_plain", hash=>$hash,
4508                           hash_base=>$hash_base, file_name=>$file_name) .
4509                      qq!" />\n!;
4510        } else {
4511                my $nr;
4512                while (my $line = <$fd>) {
4513                        chomp $line;
4514                        $nr++;
4515                        $line = untabify($line);
4516                        printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n",
4517                               $nr, $nr, $nr, esc_html($line, -nbsp=>1);
4518                }
4519        }
4520        close $fd
4521                or print "Reading blob failed.\n";
4522        print "</div>";
4523        git_footer_html();
4524}
4525
4526sub git_tree {
4527        if (!defined $hash_base) {
4528                $hash_base = "HEAD";
4529        }
4530        if (!defined $hash) {
4531                if (defined $file_name) {
4532                        $hash = git_get_hash_by_path($hash_base, $file_name, "tree");
4533                } else {
4534                        $hash = $hash_base;
4535                }
4536        }
4537        $/ = "\0";
4538        open my $fd, "-|", git_cmd(), "ls-tree", '-z', $hash
4539                or die_error(undef, "Open git-ls-tree failed");
4540        my @entries = map { chomp; $_ } <$fd>;
4541        close $fd or die_error(undef, "Reading tree failed");
4542        $/ = "\n";
4543
4544        my $refs = git_get_references();
4545        my $ref = format_ref_marker($refs, $hash_base);
4546        git_header_html();
4547        my $basedir = '';
4548        my ($have_blame) = gitweb_check_feature('blame');
4549        if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4550                my @views_nav = ();
4551                if (defined $file_name) {
4552                        push @views_nav,
4553                                $cgi->a({-href => href(action=>"history", -replay=>1)},
4554                                        "history"),
4555                                $cgi->a({-href => href(action=>"tree",
4556                                                       hash_base=>"HEAD", file_name=>$file_name)},
4557                                        "HEAD"),
4558                }
4559                my $snapshot_links = format_snapshot_links($hash);
4560                if (defined $snapshot_links) {
4561                        # FIXME: Should be available when we have no hash base as well.
4562                        push @views_nav, $snapshot_links;
4563                }
4564                git_print_page_nav('tree','', $hash_base, undef, undef, join(' | ', @views_nav));
4565                git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
4566        } else {
4567                undef $hash_base;
4568                print "<div class=\"page_nav\">\n";
4569                print "<br/><br/></div>\n";
4570                print "<div class=\"title\">$hash</div>\n";
4571        }
4572        if (defined $file_name) {
4573                $basedir = $file_name;
4574                if ($basedir ne '' && substr($basedir, -1) ne '/') {
4575                        $basedir .= '/';
4576                }
4577        }
4578        git_print_page_path($file_name, 'tree', $hash_base);
4579        print "<div class=\"page_body\">\n";
4580        print "<table class=\"tree\">\n";
4581        my $alternate = 1;
4582        # '..' (top directory) link if possible
4583        if (defined $hash_base &&
4584            defined $file_name && $file_name =~ m![^/]+$!) {
4585                if ($alternate) {
4586                        print "<tr class=\"dark\">\n";
4587                } else {
4588                        print "<tr class=\"light\">\n";
4589                }
4590                $alternate ^= 1;
4591
4592                my $up = $file_name;
4593                $up =~ s!/?[^/]+$!!;
4594                undef $up unless $up;
4595                # based on git_print_tree_entry
4596                print '<td class="mode">' . mode_str('040000') . "</td>\n";
4597                print '<td class="list">';
4598                print $cgi->a({-href => href(action=>"tree", hash_base=>$hash_base,
4599                                             file_name=>$up)},
4600                              "..");
4601                print "</td>\n";
4602                print "<td class=\"link\"></td>\n";
4603
4604                print "</tr>\n";
4605        }
4606        foreach my $line (@entries) {
4607                my %t = parse_ls_tree_line($line, -z => 1);
4608
4609                if ($alternate) {
4610                        print "<tr class=\"dark\">\n";
4611                } else {
4612                        print "<tr class=\"light\">\n";
4613                }
4614                $alternate ^= 1;
4615
4616                git_print_tree_entry(\%t, $basedir, $hash_base, $have_blame);
4617
4618                print "</tr>\n";
4619        }
4620        print "</table>\n" .
4621              "</div>";
4622        git_footer_html();
4623}
4624
4625sub git_snapshot {
4626        my @supported_fmts = gitweb_check_feature('snapshot');
4627        @supported_fmts = filter_snapshot_fmts(@supported_fmts);
4628
4629        my $format = $cgi->param('sf');
4630        if (!@supported_fmts) {
4631                die_error('403 Permission denied', "Permission denied");
4632        }
4633        # default to first supported snapshot format
4634        $format ||= $supported_fmts[0];
4635        if ($format !~ m/^[a-z0-9]+$/) {
4636                die_error(undef, "Invalid snapshot format parameter");
4637        } elsif (!exists($known_snapshot_formats{$format})) {
4638                die_error(undef, "Unknown snapshot format");
4639        } elsif (!grep($_ eq $format, @supported_fmts)) {
4640                die_error(undef, "Unsupported snapshot format");
4641        }
4642
4643        if (!defined $hash) {
4644                $hash = git_get_head_hash($project);
4645        }
4646
4647        my $git_command = git_cmd_str();
4648        my $name = $project;
4649        $name =~ s,([^/])/*\.git$,$1,;
4650        $name = basename($name);
4651        my $filename = to_utf8($name);
4652        $name =~ s/\047/\047\\\047\047/g;
4653        my $cmd;
4654        $filename .= "-$hash$known_snapshot_formats{$format}{'suffix'}";
4655        $cmd = "$git_command archive " .
4656                "--format=$known_snapshot_formats{$format}{'format'} " .
4657                "--prefix=\'$name\'/ $hash";
4658        if (exists $known_snapshot_formats{$format}{'compressor'}) {
4659                $cmd .= ' | ' . join ' ', @{$known_snapshot_formats{$format}{'compressor'}};
4660        }
4661
4662        print $cgi->header(
4663                -type => $known_snapshot_formats{$format}{'type'},
4664                -content_disposition => 'inline; filename="' . "$filename" . '"',
4665                -status => '200 OK');
4666
4667        open my $fd, "-|", $cmd
4668                or die_error(undef, "Execute git-archive failed");
4669        binmode STDOUT, ':raw';
4670        print <$fd>;
4671        binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
4672        close $fd;
4673}
4674
4675sub git_log {
4676        my $head = git_get_head_hash($project);
4677        if (!defined $hash) {
4678                $hash = $head;
4679        }
4680        if (!defined $page) {
4681                $page = 0;
4682        }
4683        my $refs = git_get_references();
4684
4685        my @commitlist = parse_commits($hash, 101, (100 * $page));
4686
4687        my $paging_nav = format_paging_nav('log', $hash, $head, $page, $#commitlist >= 100);
4688
4689        git_header_html();
4690        git_print_page_nav('log','', $hash,undef,undef, $paging_nav);
4691
4692        if (!@commitlist) {
4693                my %co = parse_commit($hash);
4694
4695                git_print_header_div('summary', $project);
4696                print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
4697        }
4698        my $to = ($#commitlist >= 99) ? (99) : ($#commitlist);
4699        for (my $i = 0; $i <= $to; $i++) {
4700                my %co = %{$commitlist[$i]};
4701                next if !%co;
4702                my $commit = $co{'id'};
4703                my $ref = format_ref_marker($refs, $commit);
4704                my %ad = parse_date($co{'author_epoch'});
4705                git_print_header_div('commit',
4706                               "<span class=\"age\">$co{'age_string'}</span>" .
4707                               esc_html($co{'title'}) . $ref,
4708                               $commit);
4709                print "<div class=\"title_text\">\n" .
4710                      "<div class=\"log_link\">\n" .
4711                      $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
4712                      " | " .
4713                      $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
4714                      " | " .
4715                      $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree") .
4716                      "<br/>\n" .
4717                      "</div>\n" .
4718                      "<i>" . esc_html($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
4719                      "</div>\n";
4720
4721                print "<div class=\"log_body\">\n";
4722                git_print_log($co{'comment'}, -final_empty_line=> 1);
4723                print "</div>\n";
4724        }
4725        if ($#commitlist >= 100) {
4726                print "<div class=\"page_nav\">\n";
4727                print $cgi->a({-href => href(-replay=>1, page=>$page+1),
4728                               -accesskey => "n", -title => "Alt-n"}, "next");
4729                print "</div>\n";
4730        }
4731        git_footer_html();
4732}
4733
4734sub git_commit {
4735        $hash ||= $hash_base || "HEAD";
4736        my %co = parse_commit($hash);
4737        if (!%co) {
4738                die_error(undef, "Unknown commit object");
4739        }
4740        my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
4741        my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
4742
4743        my $parent  = $co{'parent'};
4744        my $parents = $co{'parents'}; # listref
4745
4746        # we need to prepare $formats_nav before any parameter munging
4747        my $formats_nav;
4748        if (!defined $parent) {
4749                # --root commitdiff
4750                $formats_nav .= '(initial)';
4751        } elsif (@$parents == 1) {
4752                # single parent commit
4753                $formats_nav .=
4754                        '(parent: ' .
4755                        $cgi->a({-href => href(action=>"commit",
4756                                               hash=>$parent)},
4757                                esc_html(substr($parent, 0, 7))) .
4758                        ')';
4759        } else {
4760                # merge commit
4761                $formats_nav .=
4762                        '(merge: ' .
4763                        join(' ', map {
4764                                $cgi->a({-href => href(action=>"commit",
4765                                                       hash=>$_)},
4766                                        esc_html(substr($_, 0, 7)));
4767                        } @$parents ) .
4768                        ')';
4769        }
4770
4771        if (!defined $parent) {
4772                $parent = "--root";
4773        }
4774        my @difftree;
4775        open my $fd, "-|", git_cmd(), "diff-tree", '-r', "--no-commit-id",
4776                @diff_opts,
4777                (@$parents <= 1 ? $parent : '-c'),
4778                $hash, "--"
4779                or die_error(undef, "Open git-diff-tree failed");
4780        @difftree = map { chomp; $_ } <$fd>;
4781        close $fd or die_error(undef, "Reading git-diff-tree failed");
4782
4783        # non-textual hash id's can be cached
4784        my $expires;
4785        if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4786                $expires = "+1d";
4787        }
4788        my $refs = git_get_references();
4789        my $ref = format_ref_marker($refs, $co{'id'});
4790
4791        git_header_html(undef, $expires);
4792        git_print_page_nav('commit', '',
4793                           $hash, $co{'tree'}, $hash,
4794                           $formats_nav);
4795
4796        if (defined $co{'parent'}) {
4797                git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
4798        } else {
4799                git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
4800        }
4801        print "<div class=\"title_text\">\n" .
4802              "<table class=\"object_header\">\n";
4803        print "<tr><td>author</td><td>" . esc_html($co{'author'}) . "</td></tr>\n".
4804              "<tr>" .
4805              "<td></td><td> $ad{'rfc2822'}";
4806        if ($ad{'hour_local'} < 6) {
4807                printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
4808                       $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
4809        } else {
4810                printf(" (%02d:%02d %s)",
4811                       $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
4812        }
4813        print "</td>" .
4814              "</tr>\n";
4815        print "<tr><td>committer</td><td>" . esc_html($co{'committer'}) . "</td></tr>\n";
4816        print "<tr><td></td><td> $cd{'rfc2822'}" .
4817              sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) .
4818              "</td></tr>\n";
4819        print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
4820        print "<tr>" .
4821              "<td>tree</td>" .
4822              "<td class=\"sha1\">" .
4823              $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash),
4824                       class => "list"}, $co{'tree'}) .
4825              "</td>" .
4826              "<td class=\"link\">" .
4827              $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)},
4828                      "tree");
4829        my $snapshot_links = format_snapshot_links($hash);
4830        if (defined $snapshot_links) {
4831                print " | " . $snapshot_links;
4832        }
4833        print "</td>" .
4834              "</tr>\n";
4835
4836        foreach my $par (@$parents) {
4837                print "<tr>" .
4838                      "<td>parent</td>" .
4839                      "<td class=\"sha1\">" .
4840                      $cgi->a({-href => href(action=>"commit", hash=>$par),
4841                               class => "list"}, $par) .
4842                      "</td>" .
4843                      "<td class=\"link\">" .
4844                      $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
4845                      " | " .
4846                      $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "diff") .
4847                      "</td>" .
4848                      "</tr>\n";
4849        }
4850        print "</table>".
4851              "</div>\n";
4852
4853        print "<div class=\"page_body\">\n";
4854        git_print_log($co{'comment'});
4855        print "</div>\n";
4856
4857        git_difftree_body(\@difftree, $hash, @$parents);
4858
4859        git_footer_html();
4860}
4861
4862sub git_object {
4863        # object is defined by:
4864        # - hash or hash_base alone
4865        # - hash_base and file_name
4866        my $type;
4867
4868        # - hash or hash_base alone
4869        if ($hash || ($hash_base && !defined $file_name)) {
4870                my $object_id = $hash || $hash_base;
4871
4872                my $git_command = git_cmd_str();
4873                open my $fd, "-|", "$git_command cat-file -t $object_id 2>/dev/null"
4874                        or die_error('404 Not Found', "Object does not exist");
4875                $type = <$fd>;
4876                chomp $type;
4877                close $fd
4878                        or die_error('404 Not Found', "Object does not exist");
4879
4880        # - hash_base and file_name
4881        } elsif ($hash_base && defined $file_name) {
4882                $file_name =~ s,/+$,,;
4883
4884                system(git_cmd(), "cat-file", '-e', $hash_base) == 0
4885                        or die_error('404 Not Found', "Base object does not exist");
4886
4887                # here errors should not hapen
4888                open my $fd, "-|", git_cmd(), "ls-tree", $hash_base, "--", $file_name
4889                        or die_error(undef, "Open git-ls-tree failed");
4890                my $line = <$fd>;
4891                close $fd;
4892
4893                #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
4894                unless ($line && $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/) {
4895                        die_error('404 Not Found', "File or directory for given base does not exist");
4896                }
4897                $type = $2;
4898                $hash = $3;
4899        } else {
4900                die_error('404 Not Found', "Not enough information to find object");
4901        }
4902
4903        print $cgi->redirect(-uri => href(action=>$type, -full=>1,
4904                                          hash=>$hash, hash_base=>$hash_base,
4905                                          file_name=>$file_name),
4906                             -status => '302 Found');
4907}
4908
4909sub git_blobdiff {
4910        my $format = shift || 'html';
4911
4912        my $fd;
4913        my @difftree;
4914        my %diffinfo;
4915        my $expires;
4916
4917        # preparing $fd and %diffinfo for git_patchset_body
4918        # new style URI
4919        if (defined $hash_base && defined $hash_parent_base) {
4920                if (defined $file_name) {
4921                        # read raw output
4922                        open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4923                                $hash_parent_base, $hash_base,
4924                                "--", (defined $file_parent ? $file_parent : ()), $file_name
4925                                or die_error(undef, "Open git-diff-tree failed");
4926                        @difftree = map { chomp; $_ } <$fd>;
4927                        close $fd
4928                                or die_error(undef, "Reading git-diff-tree failed");
4929                        @difftree
4930                                or die_error('404 Not Found', "Blob diff not found");
4931
4932                } elsif (defined $hash &&
4933                         $hash =~ /[0-9a-fA-F]{40}/) {
4934                        # try to find filename from $hash
4935
4936                        # read filtered raw output
4937                        open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4938                                $hash_parent_base, $hash_base, "--"
4939                                or die_error(undef, "Open git-diff-tree failed");
4940                        @difftree =
4941                                # ':100644 100644 03b21826... 3b93d5e7... M     ls-files.c'
4942                                # $hash == to_id
4943                                grep { /^:[0-7]{6} [0-7]{6} [0-9a-fA-F]{40} $hash/ }
4944                                map { chomp; $_ } <$fd>;
4945                        close $fd
4946                                or die_error(undef, "Reading git-diff-tree failed");
4947                        @difftree
4948                                or die_error('404 Not Found', "Blob diff not found");
4949
4950                } else {
4951                        die_error('404 Not Found', "Missing one of the blob diff parameters");
4952                }
4953
4954                if (@difftree > 1) {
4955                        die_error('404 Not Found', "Ambiguous blob diff specification");
4956                }
4957
4958                %diffinfo = parse_difftree_raw_line($difftree[0]);
4959                $file_parent ||= $diffinfo{'from_file'} || $file_name;
4960                $file_name   ||= $diffinfo{'to_file'};
4961
4962                $hash_parent ||= $diffinfo{'from_id'};
4963                $hash        ||= $diffinfo{'to_id'};
4964
4965                # non-textual hash id's can be cached
4966                if ($hash_base =~ m/^[0-9a-fA-F]{40}$/ &&
4967                    $hash_parent_base =~ m/^[0-9a-fA-F]{40}$/) {
4968                        $expires = '+1d';
4969                }
4970
4971                # open patch output
4972                open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4973                        '-p', ($format eq 'html' ? "--full-index" : ()),
4974                        $hash_parent_base, $hash_base,
4975                        "--", (defined $file_parent ? $file_parent : ()), $file_name
4976                        or die_error(undef, "Open git-diff-tree failed");
4977        }
4978
4979        # old/legacy style URI
4980        if (!%diffinfo && # if new style URI failed
4981            defined $hash && defined $hash_parent) {
4982                # fake git-diff-tree raw output
4983                $diffinfo{'from_mode'} = $diffinfo{'to_mode'} = "blob";
4984                $diffinfo{'from_id'} = $hash_parent;
4985                $diffinfo{'to_id'}   = $hash;
4986                if (defined $file_name) {
4987                        if (defined $file_parent) {
4988                                $diffinfo{'status'} = '2';
4989                                $diffinfo{'from_file'} = $file_parent;
4990                                $diffinfo{'to_file'}   = $file_name;
4991                        } else { # assume not renamed
4992                                $diffinfo{'status'} = '1';
4993                                $diffinfo{'from_file'} = $file_name;
4994                                $diffinfo{'to_file'}   = $file_name;
4995                        }
4996                } else { # no filename given
4997                        $diffinfo{'status'} = '2';
4998                        $diffinfo{'from_file'} = $hash_parent;
4999                        $diffinfo{'to_file'}   = $hash;
5000                }
5001
5002                # non-textual hash id's can be cached
5003                if ($hash =~ m/^[0-9a-fA-F]{40}$/ &&
5004                    $hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
5005                        $expires = '+1d';
5006                }
5007
5008                # open patch output
5009                open $fd, "-|", git_cmd(), "diff", @diff_opts,
5010                        '-p', ($format eq 'html' ? "--full-index" : ()),
5011                        $hash_parent, $hash, "--"
5012                        or die_error(undef, "Open git-diff failed");
5013        } else  {
5014                die_error('404 Not Found', "Missing one of the blob diff parameters")
5015                        unless %diffinfo;
5016        }
5017
5018        # header
5019        if ($format eq 'html') {
5020                my $formats_nav =
5021                        $cgi->a({-href => href(action=>"blobdiff_plain", -replay=>1)},
5022                                "raw");
5023                git_header_html(undef, $expires);
5024                if (defined $hash_base && (my %co = parse_commit($hash_base))) {
5025                        git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
5026                        git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
5027                } else {
5028                        print "<div class=\"page_nav\"><br/>$formats_nav<br/></div>\n";
5029                        print "<div class=\"title\">$hash vs $hash_parent</div>\n";
5030                }
5031                if (defined $file_name) {
5032                        git_print_page_path($file_name, "blob", $hash_base);
5033                } else {
5034                        print "<div class=\"page_path\"></div>\n";
5035                }
5036
5037        } elsif ($format eq 'plain') {
5038                print $cgi->header(
5039                        -type => 'text/plain',
5040                        -charset => 'utf-8',
5041                        -expires => $expires,
5042                        -content_disposition => 'inline; filename="' . "$file_name" . '.patch"');
5043
5044                print "X-Git-Url: " . $cgi->self_url() . "\n\n";
5045
5046        } else {
5047                die_error(undef, "Unknown blobdiff format");
5048        }
5049
5050        # patch
5051        if ($format eq 'html') {
5052                print "<div class=\"page_body\">\n";
5053
5054                git_patchset_body($fd, [ \%diffinfo ], $hash_base, $hash_parent_base);
5055                close $fd;
5056
5057                print "</div>\n"; # class="page_body"
5058                git_footer_html();
5059
5060        } else {
5061                while (my $line = <$fd>) {
5062                        $line =~ s!a/($hash|$hash_parent)!'a/'.esc_path($diffinfo{'from_file'})!eg;
5063                        $line =~ s!b/($hash|$hash_parent)!'b/'.esc_path($diffinfo{'to_file'})!eg;
5064
5065                        print $line;
5066
5067                        last if $line =~ m!^\+\+\+!;
5068                }
5069                local $/ = undef;
5070                print <$fd>;
5071                close $fd;
5072        }
5073}
5074
5075sub git_blobdiff_plain {
5076        git_blobdiff('plain');
5077}
5078
5079sub git_commitdiff {
5080        my $format = shift || 'html';
5081        $hash ||= $hash_base || "HEAD";
5082        my %co = parse_commit($hash);
5083        if (!%co) {
5084                die_error(undef, "Unknown commit object");
5085        }
5086
5087        # choose format for commitdiff for merge
5088        if (! defined $hash_parent && @{$co{'parents'}} > 1) {
5089                $hash_parent = '--cc';
5090        }
5091        # we need to prepare $formats_nav before almost any parameter munging
5092        my $formats_nav;
5093        if ($format eq 'html') {
5094                $formats_nav =
5095                        $cgi->a({-href => href(action=>"commitdiff_plain", -replay=>1)},
5096                                "raw");
5097
5098                if (defined $hash_parent &&
5099                    $hash_parent ne '-c' && $hash_parent ne '--cc') {
5100                        # commitdiff with two commits given
5101                        my $hash_parent_short = $hash_parent;
5102                        if ($hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
5103                                $hash_parent_short = substr($hash_parent, 0, 7);
5104                        }
5105                        $formats_nav .=
5106                                ' (from';
5107                        for (my $i = 0; $i < @{$co{'parents'}}; $i++) {
5108                                if ($co{'parents'}[$i] eq $hash_parent) {
5109                                        $formats_nav .= ' parent ' . ($i+1);
5110                                        last;
5111                                }
5112                        }
5113                        $formats_nav .= ': ' .
5114                                $cgi->a({-href => href(action=>"commitdiff",
5115                                                       hash=>$hash_parent)},
5116                                        esc_html($hash_parent_short)) .
5117                                ')';
5118                } elsif (!$co{'parent'}) {
5119                        # --root commitdiff
5120                        $formats_nav .= ' (initial)';
5121                } elsif (scalar @{$co{'parents'}} == 1) {
5122                        # single parent commit
5123                        $formats_nav .=
5124                                ' (parent: ' .
5125                                $cgi->a({-href => href(action=>"commitdiff",
5126                                                       hash=>$co{'parent'})},
5127                                        esc_html(substr($co{'parent'}, 0, 7))) .
5128                                ')';
5129                } else {
5130                        # merge commit
5131                        if ($hash_parent eq '--cc') {
5132                                $formats_nav .= ' | ' .
5133                                        $cgi->a({-href => href(action=>"commitdiff",
5134                                                               hash=>$hash, hash_parent=>'-c')},
5135                                                'combined');
5136                        } else { # $hash_parent eq '-c'
5137                                $formats_nav .= ' | ' .
5138                                        $cgi->a({-href => href(action=>"commitdiff",
5139                                                               hash=>$hash, hash_parent=>'--cc')},
5140                                                'compact');
5141                        }
5142                        $formats_nav .=
5143                                ' (merge: ' .
5144                                join(' ', map {
5145                                        $cgi->a({-href => href(action=>"commitdiff",
5146                                                               hash=>$_)},
5147                                                esc_html(substr($_, 0, 7)));
5148                                } @{$co{'parents'}} ) .
5149                                ')';
5150                }
5151        }
5152
5153        my $hash_parent_param = $hash_parent;
5154        if (!defined $hash_parent_param) {
5155                # --cc for multiple parents, --root for parentless
5156                $hash_parent_param =
5157                        @{$co{'parents'}} > 1 ? '--cc' : $co{'parent'} || '--root';
5158        }
5159
5160        # read commitdiff
5161        my $fd;
5162        my @difftree;
5163        if ($format eq 'html') {
5164                open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
5165                        "--no-commit-id", "--patch-with-raw", "--full-index",
5166                        $hash_parent_param, $hash, "--"
5167                        or die_error(undef, "Open git-diff-tree failed");
5168
5169                while (my $line = <$fd>) {
5170                        chomp $line;
5171                        # empty line ends raw part of diff-tree output
5172                        last unless $line;
5173                        push @difftree, scalar parse_difftree_raw_line($line);
5174                }
5175
5176        } elsif ($format eq 'plain') {
5177                open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
5178                        '-p', $hash_parent_param, $hash, "--"
5179                        or die_error(undef, "Open git-diff-tree failed");
5180
5181        } else {
5182                die_error(undef, "Unknown commitdiff format");
5183        }
5184
5185        # non-textual hash id's can be cached
5186        my $expires;
5187        if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
5188                $expires = "+1d";
5189        }
5190
5191        # write commit message
5192        if ($format eq 'html') {
5193                my $refs = git_get_references();
5194                my $ref = format_ref_marker($refs, $co{'id'});
5195
5196                git_header_html(undef, $expires);
5197                git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
5198                git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
5199                git_print_authorship(\%co);
5200                print "<div class=\"page_body\">\n";
5201                if (@{$co{'comment'}} > 1) {
5202                        print "<div class=\"log\">\n";
5203                        git_print_log($co{'comment'}, -final_empty_line=> 1, -remove_title => 1);
5204                        print "</div>\n"; # class="log"
5205                }
5206
5207        } elsif ($format eq 'plain') {
5208                my $refs = git_get_references("tags");
5209                my $tagname = git_get_rev_name_tags($hash);
5210                my $filename = basename($project) . "-$hash.patch";
5211
5212                print $cgi->header(
5213                        -type => 'text/plain',
5214                        -charset => 'utf-8',
5215                        -expires => $expires,
5216                        -content_disposition => 'inline; filename="' . "$filename" . '"');
5217                my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
5218                print "From: " . to_utf8($co{'author'}) . "\n";
5219                print "Date: $ad{'rfc2822'} ($ad{'tz_local'})\n";
5220                print "Subject: " . to_utf8($co{'title'}) . "\n";
5221
5222                print "X-Git-Tag: $tagname\n" if $tagname;
5223                print "X-Git-Url: " . $cgi->self_url() . "\n\n";
5224
5225                foreach my $line (@{$co{'comment'}}) {
5226                        print to_utf8($line) . "\n";
5227                }
5228                print "---\n\n";
5229        }
5230
5231        # write patch
5232        if ($format eq 'html') {
5233                my $use_parents = !defined $hash_parent ||
5234                        $hash_parent eq '-c' || $hash_parent eq '--cc';
5235                git_difftree_body(\@difftree, $hash,
5236                                  $use_parents ? @{$co{'parents'}} : $hash_parent);
5237                print "<br/>\n";
5238
5239                git_patchset_body($fd, \@difftree, $hash,
5240                                  $use_parents ? @{$co{'parents'}} : $hash_parent);
5241                close $fd;
5242                print "</div>\n"; # class="page_body"
5243                git_footer_html();
5244
5245        } elsif ($format eq 'plain') {
5246                local $/ = undef;
5247                print <$fd>;
5248                close $fd
5249                        or print "Reading git-diff-tree failed\n";
5250        }
5251}
5252
5253sub git_commitdiff_plain {
5254        git_commitdiff('plain');
5255}
5256
5257sub git_history {
5258        if (!defined $hash_base) {
5259                $hash_base = git_get_head_hash($project);
5260        }
5261        if (!defined $page) {
5262                $page = 0;
5263        }
5264        my $ftype;
5265        my %co = parse_commit($hash_base);
5266        if (!%co) {
5267                die_error(undef, "Unknown commit object");
5268        }
5269
5270        my $refs = git_get_references();
5271        my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
5272
5273        my @commitlist = parse_commits($hash_base, 101, (100 * $page),
5274                                       $file_name, "--full-history");
5275        if (!@commitlist) {
5276                die_error('404 Not Found', "No such file or directory on given branch");
5277        }
5278
5279        if (!defined $hash && defined $file_name) {
5280                # some commits could have deleted file in question,
5281                # and not have it in tree, but one of them has to have it
5282                for (my $i = 0; $i <= @commitlist; $i++) {
5283                        $hash = git_get_hash_by_path($commitlist[$i]{'id'}, $file_name);
5284                        last if defined $hash;
5285                }
5286        }
5287        if (defined $hash) {
5288                $ftype = git_get_type($hash);
5289        }
5290        if (!defined $ftype) {
5291                die_error(undef, "Unknown type of object");
5292        }
5293
5294        my $paging_nav = '';
5295        if ($page > 0) {
5296                $paging_nav .=
5297                        $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
5298                                               file_name=>$file_name)},
5299                                "first");
5300                $paging_nav .= " &sdot; " .
5301                        $cgi->a({-href => href(-replay=>1, page=>$page-1),
5302                                 -accesskey => "p", -title => "Alt-p"}, "prev");
5303        } else {
5304                $paging_nav .= "first";
5305                $paging_nav .= " &sdot; prev";
5306        }
5307        my $next_link = '';
5308        if ($#commitlist >= 100) {
5309                $next_link =
5310                        $cgi->a({-href => href(-replay=>1, page=>$page+1),
5311                                 -accesskey => "n", -title => "Alt-n"}, "next");
5312                $paging_nav .= " &sdot; $next_link";
5313        } else {
5314                $paging_nav .= " &sdot; next";
5315        }
5316
5317        git_header_html();
5318        git_print_page_nav('history','', $hash_base,$co{'tree'},$hash_base, $paging_nav);
5319        git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
5320        git_print_page_path($file_name, $ftype, $hash_base);
5321
5322        git_history_body(\@commitlist, 0, 99,
5323                         $refs, $hash_base, $ftype, $next_link);
5324
5325        git_footer_html();
5326}
5327
5328sub git_search {
5329        my ($have_search) = gitweb_check_feature('search');
5330        if (!$have_search) {
5331                die_error('403 Permission denied', "Permission denied");
5332        }
5333        if (!defined $searchtext) {
5334                die_error(undef, "Text field empty");
5335        }
5336        if (!defined $hash) {
5337                $hash = git_get_head_hash($project);
5338        }
5339        my %co = parse_commit($hash);
5340        if (!%co) {
5341                die_error(undef, "Unknown commit object");
5342        }
5343        if (!defined $page) {
5344                $page = 0;
5345        }
5346
5347        $searchtype ||= 'commit';
5348        if ($searchtype eq 'pickaxe') {
5349                # pickaxe may take all resources of your box and run for several minutes
5350                # with every query - so decide by yourself how public you make this feature
5351                my ($have_pickaxe) = gitweb_check_feature('pickaxe');
5352                if (!$have_pickaxe) {
5353                        die_error('403 Permission denied', "Permission denied");
5354                }
5355        }
5356        if ($searchtype eq 'grep') {
5357                my ($have_grep) = gitweb_check_feature('grep');
5358                if (!$have_grep) {
5359                        die_error('403 Permission denied', "Permission denied");
5360                }
5361        }
5362
5363        git_header_html();
5364
5365        if ($searchtype eq 'commit' or $searchtype eq 'author' or $searchtype eq 'committer') {
5366                my $greptype;
5367                if ($searchtype eq 'commit') {
5368                        $greptype = "--grep=";
5369                } elsif ($searchtype eq 'author') {
5370                        $greptype = "--author=";
5371                } elsif ($searchtype eq 'committer') {
5372                        $greptype = "--committer=";
5373                }
5374                $greptype .= $searchtext;
5375                my @commitlist = parse_commits($hash, 101, (100 * $page), undef,
5376                                               $greptype, '--regexp-ignore-case',
5377                                               $search_use_regexp ? '--extended-regexp' : '--fixed-strings');
5378
5379                my $paging_nav = '';
5380                if ($page > 0) {
5381                        $paging_nav .=
5382                                $cgi->a({-href => href(action=>"search", hash=>$hash,
5383                                                       searchtext=>$searchtext,
5384                                                       searchtype=>$searchtype)},
5385                                        "first");
5386                        $paging_nav .= " &sdot; " .
5387                                $cgi->a({-href => href(-replay=>1, page=>$page-1),
5388                                         -accesskey => "p", -title => "Alt-p"}, "prev");
5389                } else {
5390                        $paging_nav .= "first";
5391                        $paging_nav .= " &sdot; prev";
5392                }
5393                my $next_link = '';
5394                if ($#commitlist >= 100) {
5395                        $next_link =
5396                                $cgi->a({-href => href(-replay=>1, page=>$page+1),
5397                                         -accesskey => "n", -title => "Alt-n"}, "next");
5398                        $paging_nav .= " &sdot; $next_link";
5399                } else {
5400                        $paging_nav .= " &sdot; next";
5401                }
5402
5403                if ($#commitlist >= 100) {
5404                }
5405
5406                git_print_page_nav('','', $hash,$co{'tree'},$hash, $paging_nav);
5407                git_print_header_div('commit', esc_html($co{'title'}), $hash);
5408                git_search_grep_body(\@commitlist, 0, 99, $next_link);
5409        }
5410
5411        if ($searchtype eq 'pickaxe') {
5412                git_print_page_nav('','', $hash,$co{'tree'},$hash);
5413                git_print_header_div('commit', esc_html($co{'title'}), $hash);
5414
5415                print "<table class=\"pickaxe search\">\n";
5416                my $alternate = 1;
5417                $/ = "\n";
5418                open my $fd, '-|', git_cmd(), '--no-pager', 'log', @diff_opts,
5419                        '--pretty=format:%H', '--no-abbrev', '--raw', "-S$searchtext",
5420                        ($search_use_regexp ? '--pickaxe-regex' : ());
5421                undef %co;
5422                my @files;
5423                while (my $line = <$fd>) {
5424                        chomp $line;
5425                        next unless $line;
5426
5427                        my %set = parse_difftree_raw_line($line);
5428                        if (defined $set{'commit'}) {
5429                                # finish previous commit
5430                                if (%co) {
5431                                        print "</td>\n" .
5432                                              "<td class=\"link\">" .
5433                                              $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
5434                                              " | " .
5435                                              $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
5436                                        print "</td>\n" .
5437                                              "</tr>\n";
5438                                }
5439
5440                                if ($alternate) {
5441                                        print "<tr class=\"dark\">\n";
5442                                } else {
5443                                        print "<tr class=\"light\">\n";
5444                                }
5445                                $alternate ^= 1;
5446                                %co = parse_commit($set{'commit'});
5447                                my $author = chop_and_escape_str($co{'author_name'}, 15, 5);
5448                                print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
5449                                      "<td><i>$author</i></td>\n" .
5450                                      "<td>" .
5451                                      $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
5452                                              -class => "list subject"},
5453                                              chop_and_escape_str($co{'title'}, 50) . "<br/>");
5454                        } elsif (defined $set{'to_id'}) {
5455                                next if ($set{'to_id'} =~ m/^0{40}$/);
5456
5457                                print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
5458                                                             hash=>$set{'to_id'}, file_name=>$set{'to_file'}),
5459                                              -class => "list"},
5460                                              "<span class=\"match\">" . esc_path($set{'file'}) . "</span>") .
5461                                      "<br/>\n";
5462                        }
5463                }
5464                close $fd;
5465
5466                # finish last commit (warning: repetition!)
5467                if (%co) {
5468                        print "</td>\n" .
5469                              "<td class=\"link\">" .
5470                              $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
5471                              " | " .
5472                              $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
5473                        print "</td>\n" .
5474                              "</tr>\n";
5475                }
5476
5477                print "</table>\n";
5478        }
5479
5480        if ($searchtype eq 'grep') {
5481                git_print_page_nav('','', $hash,$co{'tree'},$hash);
5482                git_print_header_div('commit', esc_html($co{'title'}), $hash);
5483
5484                print "<table class=\"grep_search\">\n";
5485                my $alternate = 1;
5486                my $matches = 0;
5487                $/ = "\n";
5488                open my $fd, "-|", git_cmd(), 'grep', '-n',
5489                        $search_use_regexp ? ('-E', '-i') : '-F',
5490                        $searchtext, $co{'tree'};
5491                my $lastfile = '';
5492                while (my $line = <$fd>) {
5493                        chomp $line;
5494                        my ($file, $lno, $ltext, $binary);
5495                        last if ($matches++ > 1000);
5496                        if ($line =~ /^Binary file (.+) matches$/) {
5497                                $file = $1;
5498                                $binary = 1;
5499                        } else {
5500                                (undef, $file, $lno, $ltext) = split(/:/, $line, 4);
5501                        }
5502                        if ($file ne $lastfile) {
5503                                $lastfile and print "</td></tr>\n";
5504                                if ($alternate++) {
5505                                        print "<tr class=\"dark\">\n";
5506                                } else {
5507                                        print "<tr class=\"light\">\n";
5508                                }
5509                                print "<td class=\"list\">".
5510                                        $cgi->a({-href => href(action=>"blob", hash=>$co{'hash'},
5511                                                               file_name=>"$file"),
5512                                                -class => "list"}, esc_path($file));
5513                                print "</td><td>\n";
5514                                $lastfile = $file;
5515                        }
5516                        if ($binary) {
5517                                print "<div class=\"binary\">Binary file</div>\n";
5518                        } else {
5519                                $ltext = untabify($ltext);
5520                                if ($ltext =~ m/^(.*)($search_regexp)(.*)$/i) {
5521                                        $ltext = esc_html($1, -nbsp=>1);
5522                                        $ltext .= '<span class="match">';
5523                                        $ltext .= esc_html($2, -nbsp=>1);
5524                                        $ltext .= '</span>';
5525                                        $ltext .= esc_html($3, -nbsp=>1);
5526                                } else {
5527                                        $ltext = esc_html($ltext, -nbsp=>1);
5528                                }
5529                                print "<div class=\"pre\">" .
5530                                        $cgi->a({-href => href(action=>"blob", hash=>$co{'hash'},
5531                                                               file_name=>"$file").'#l'.$lno,
5532                                                -class => "linenr"}, sprintf('%4i', $lno))
5533                                        . ' ' .  $ltext . "</div>\n";
5534                        }
5535                }
5536                if ($lastfile) {
5537                        print "</td></tr>\n";
5538                        if ($matches > 1000) {
5539                                print "<div class=\"diff nodifferences\">Too many matches, listing trimmed</div>\n";
5540                        }
5541                } else {
5542                        print "<div class=\"diff nodifferences\">No matches found</div>\n";
5543                }
5544                close $fd;
5545
5546                print "</table>\n";
5547        }
5548        git_footer_html();
5549}
5550
5551sub git_search_help {
5552        git_header_html();
5553        git_print_page_nav('','', $hash,$hash,$hash);
5554        print <<EOT;
5555<p><strong>Pattern</strong> is by default a normal string that is matched precisely (but without
5556regard to case, except in the case of pickaxe). However, when you check the <em>re</em> checkbox,
5557the pattern entered is recognized as the POSIX extended
5558<a href="http://en.wikipedia.org/wiki/Regular_expression">regular expression</a> (also case
5559insensitive).</p>
5560<dl>
5561<dt><b>commit</b></dt>
5562<dd>The commit messages and authorship information will be scanned for the given pattern.</dd>
5563EOT
5564        my ($have_grep) = gitweb_check_feature('grep');
5565        if ($have_grep) {
5566                print <<EOT;
5567<dt><b>grep</b></dt>
5568<dd>All files in the currently selected tree (HEAD unless you are explicitly browsing
5569    a different one) are searched for the given pattern. On large trees, this search can take
5570a while and put some strain on the server, so please use it with some consideration. Note that
5571due to git-grep peculiarity, currently if regexp mode is turned off, the matches are
5572case-sensitive.</dd>
5573EOT
5574        }
5575        print <<EOT;
5576<dt><b>author</b></dt>
5577<dd>Name and e-mail of the change author and date of birth of the patch will be scanned for the given pattern.</dd>
5578<dt><b>committer</b></dt>
5579<dd>Name and e-mail of the committer and date of commit will be scanned for the given pattern.</dd>
5580EOT
5581        my ($have_pickaxe) = gitweb_check_feature('pickaxe');
5582        if ($have_pickaxe) {
5583                print <<EOT;
5584<dt><b>pickaxe</b></dt>
5585<dd>All commits that caused the string to appear or disappear from any file (changes that
5586added, removed or "modified" the string) will be listed. This search can take a while and
5587takes a lot of strain on the server, so please use it wisely. Note that since you may be
5588interested even in changes just changing the case as well, this search is case sensitive.</dd>
5589EOT
5590        }
5591        print "</dl>\n";
5592        git_footer_html();
5593}
5594
5595sub git_shortlog {
5596        my $head = git_get_head_hash($project);
5597        if (!defined $hash) {
5598                $hash = $head;
5599        }
5600        if (!defined $page) {
5601                $page = 0;
5602        }
5603        my $refs = git_get_references();
5604
5605        my @commitlist = parse_commits($hash, 101, (100 * $page));
5606
5607        my $paging_nav = format_paging_nav('shortlog', $hash, $head, $page, $#commitlist >= 100);
5608        my $next_link = '';
5609        if ($#commitlist >= 100) {
5610                $next_link =
5611                        $cgi->a({-href => href(-replay=>1, page=>$page+1),
5612                                 -accesskey => "n", -title => "Alt-n"}, "next");
5613        }
5614
5615        git_header_html();
5616        git_print_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
5617        git_print_header_div('summary', $project);
5618
5619        git_shortlog_body(\@commitlist, 0, 99, $refs, $next_link);
5620
5621        git_footer_html();
5622}
5623
5624## ......................................................................
5625## feeds (RSS, Atom; OPML)
5626
5627sub git_feed {
5628        my $format = shift || 'atom';
5629        my ($have_blame) = gitweb_check_feature('blame');
5630
5631        # Atom: http://www.atomenabled.org/developers/syndication/
5632        # RSS:  http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
5633        if ($format ne 'rss' && $format ne 'atom') {
5634                die_error(undef, "Unknown web feed format");
5635        }
5636
5637        # log/feed of current (HEAD) branch, log of given branch, history of file/directory
5638        my $head = $hash || 'HEAD';
5639        my @commitlist = parse_commits($head, 150, 0, $file_name);
5640
5641        my %latest_commit;
5642        my %latest_date;
5643        my $content_type = "application/$format+xml";
5644        if (defined $cgi->http('HTTP_ACCEPT') &&
5645                 $cgi->Accept('text/xml') > $cgi->Accept($content_type)) {
5646                # browser (feed reader) prefers text/xml
5647                $content_type = 'text/xml';
5648        }
5649        if (defined($commitlist[0])) {
5650                %latest_commit = %{$commitlist[0]};
5651                %latest_date   = parse_date($latest_commit{'author_epoch'});
5652                print $cgi->header(
5653                        -type => $content_type,
5654                        -charset => 'utf-8',
5655                        -last_modified => $latest_date{'rfc2822'});
5656        } else {
5657                print $cgi->header(
5658                        -type => $content_type,
5659                        -charset => 'utf-8');
5660        }
5661
5662        # Optimization: skip generating the body if client asks only
5663        # for Last-Modified date.
5664        return if ($cgi->request_method() eq 'HEAD');
5665
5666        # header variables
5667        my $title = "$site_name - $project/$action";
5668        my $feed_type = 'log';
5669        if (defined $hash) {
5670                $title .= " - '$hash'";
5671                $feed_type = 'branch log';
5672                if (defined $file_name) {
5673                        $title .= " :: $file_name";
5674                        $feed_type = 'history';
5675                }
5676        } elsif (defined $file_name) {
5677                $title .= " - $file_name";
5678                $feed_type = 'history';
5679        }
5680        $title .= " $feed_type";
5681        my $descr = git_get_project_description($project);
5682        if (defined $descr) {
5683                $descr = esc_html($descr);
5684        } else {
5685                $descr = "$project " .
5686                         ($format eq 'rss' ? 'RSS' : 'Atom') .
5687                         " feed";
5688        }
5689        my $owner = git_get_project_owner($project);
5690        $owner = esc_html($owner);
5691
5692        #header
5693        my $alt_url;
5694        if (defined $file_name) {
5695                $alt_url = href(-full=>1, action=>"history", hash=>$hash, file_name=>$file_name);
5696        } elsif (defined $hash) {
5697                $alt_url = href(-full=>1, action=>"log", hash=>$hash);
5698        } else {
5699                $alt_url = href(-full=>1, action=>"summary");
5700        }
5701        print qq!<?xml version="1.0" encoding="utf-8"?>\n!;
5702        if ($format eq 'rss') {
5703                print <<XML;
5704<rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
5705<channel>
5706XML
5707                print "<title>$title</title>\n" .
5708                      "<link>$alt_url</link>\n" .
5709                      "<description>$descr</description>\n" .
5710                      "<language>en</language>\n";
5711        } elsif ($format eq 'atom') {
5712                print <<XML;
5713<feed xmlns="http://www.w3.org/2005/Atom">
5714XML
5715                print "<title>$title</title>\n" .
5716                      "<subtitle>$descr</subtitle>\n" .
5717                      '<link rel="alternate" type="text/html" href="' .
5718                      $alt_url . '" />' . "\n" .
5719                      '<link rel="self" type="' . $content_type . '" href="' .
5720                      $cgi->self_url() . '" />' . "\n" .
5721                      "<id>" . href(-full=>1) . "</id>\n" .
5722                      # use project owner for feed author
5723                      "<author><name>$owner</name></author>\n";
5724                if (defined $favicon) {
5725                        print "<icon>" . esc_url($favicon) . "</icon>\n";
5726                }
5727                if (defined $logo_url) {
5728                        # not twice as wide as tall: 72 x 27 pixels
5729                        print "<logo>" . esc_url($logo) . "</logo>\n";
5730                }
5731                if (! %latest_date) {
5732                        # dummy date to keep the feed valid until commits trickle in:
5733                        print "<updated>1970-01-01T00:00:00Z</updated>\n";
5734                } else {
5735                        print "<updated>$latest_date{'iso-8601'}</updated>\n";
5736                }
5737        }
5738
5739        # contents
5740        for (my $i = 0; $i <= $#commitlist; $i++) {
5741                my %co = %{$commitlist[$i]};
5742                my $commit = $co{'id'};
5743                # we read 150, we always show 30 and the ones more recent than 48 hours
5744                if (($i >= 20) && ((time - $co{'author_epoch'}) > 48*60*60)) {
5745                        last;
5746                }
5747                my %cd = parse_date($co{'author_epoch'});
5748
5749                # get list of changed files
5750                open my $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
5751                        $co{'parent'} || "--root",
5752                        $co{'id'}, "--", (defined $file_name ? $file_name : ())
5753                        or next;
5754                my @difftree = map { chomp; $_ } <$fd>;
5755                close $fd
5756                        or next;
5757
5758                # print element (entry, item)
5759                my $co_url = href(-full=>1, action=>"commitdiff", hash=>$commit);
5760                if ($format eq 'rss') {
5761                        print "<item>\n" .
5762                              "<title>" . esc_html($co{'title'}) . "</title>\n" .
5763                              "<author>" . esc_html($co{'author'}) . "</author>\n" .
5764                              "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
5765                              "<guid isPermaLink=\"true\">$co_url</guid>\n" .
5766                              "<link>$co_url</link>\n" .
5767                              "<description>" . esc_html($co{'title'}) . "</description>\n" .
5768                              "<content:encoded>" .
5769                              "<![CDATA[\n";
5770                } elsif ($format eq 'atom') {
5771                        print "<entry>\n" .
5772                              "<title type=\"html\">" . esc_html($co{'title'}) . "</title>\n" .
5773                              "<updated>$cd{'iso-8601'}</updated>\n" .
5774                              "<author>\n" .
5775                              "  <name>" . esc_html($co{'author_name'}) . "</name>\n";
5776                        if ($co{'author_email'}) {
5777                                print "  <email>" . esc_html($co{'author_email'}) . "</email>\n";
5778                        }
5779                        print "</author>\n" .
5780                              # use committer for contributor
5781                              "<contributor>\n" .
5782                              "  <name>" . esc_html($co{'committer_name'}) . "</name>\n";
5783                        if ($co{'committer_email'}) {
5784                                print "  <email>" . esc_html($co{'committer_email'}) . "</email>\n";
5785                        }
5786                        print "</contributor>\n" .
5787                              "<published>$cd{'iso-8601'}</published>\n" .
5788                              "<link rel=\"alternate\" type=\"text/html\" href=\"$co_url\" />\n" .
5789                              "<id>$co_url</id>\n" .
5790                              "<content type=\"xhtml\" xml:base=\"" . esc_url($my_url) . "\">\n" .
5791                              "<div xmlns=\"http://www.w3.org/1999/xhtml\">\n";
5792                }
5793                my $comment = $co{'comment'};
5794                print "<pre>\n";
5795                foreach my $line (@$comment) {
5796                        $line = esc_html($line);
5797                        print "$line\n";
5798                }
5799                print "</pre><ul>\n";
5800                foreach my $difftree_line (@difftree) {
5801                        my %difftree = parse_difftree_raw_line($difftree_line);
5802                        next if !$difftree{'from_id'};
5803
5804                        my $file = $difftree{'file'} || $difftree{'to_file'};
5805
5806                        print "<li>" .
5807                              "[" .
5808                              $cgi->a({-href => href(-full=>1, action=>"blobdiff",
5809                                                     hash=>$difftree{'to_id'}, hash_parent=>$difftree{'from_id'},
5810                                                     hash_base=>$co{'id'}, hash_parent_base=>$co{'parent'},
5811                                                     file_name=>$file, file_parent=>$difftree{'from_file'}),
5812                                      -title => "diff"}, 'D');
5813                        if ($have_blame) {
5814                                print $cgi->a({-href => href(-full=>1, action=>"blame",
5815                                                             file_name=>$file, hash_base=>$commit),
5816                                              -title => "blame"}, 'B');
5817                        }
5818                        # if this is not a feed of a file history
5819                        if (!defined $file_name || $file_name ne $file) {
5820                                print $cgi->a({-href => href(-full=>1, action=>"history",
5821                                                             file_name=>$file, hash=>$commit),
5822                                              -title => "history"}, 'H');
5823                        }
5824                        $file = esc_path($file);
5825                        print "] ".
5826                              "$file</li>\n";
5827                }
5828                if ($format eq 'rss') {
5829                        print "</ul>]]>\n" .
5830                              "</content:encoded>\n" .
5831                              "</item>\n";
5832                } elsif ($format eq 'atom') {
5833                        print "</ul>\n</div>\n" .
5834                              "</content>\n" .
5835                              "</entry>\n";
5836                }
5837        }
5838
5839        # end of feed
5840        if ($format eq 'rss') {
5841                print "</channel>\n</rss>\n";
5842        }       elsif ($format eq 'atom') {
5843                print "</feed>\n";
5844        }
5845}
5846
5847sub git_rss {
5848        git_feed('rss');
5849}
5850
5851sub git_atom {
5852        git_feed('atom');
5853}
5854
5855sub git_opml {
5856        my @list = git_get_projects_list();
5857
5858        print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
5859        print <<XML;
5860<?xml version="1.0" encoding="utf-8"?>
5861<opml version="1.0">
5862<head>
5863  <title>$site_name OPML Export</title>
5864</head>
5865<body>
5866<outline text="git RSS feeds">
5867XML
5868
5869        foreach my $pr (@list) {
5870                my %proj = %$pr;
5871                my $head = git_get_head_hash($proj{'path'});
5872                if (!defined $head) {
5873                        next;
5874                }
5875                $git_dir = "$projectroot/$proj{'path'}";
5876                my %co = parse_commit($head);
5877                if (!%co) {
5878                        next;
5879                }
5880
5881                my $path = esc_html(chop_str($proj{'path'}, 25, 5));
5882                my $rss  = "$my_url?p=$proj{'path'};a=rss";
5883                my $html = "$my_url?p=$proj{'path'};a=summary";
5884                print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
5885        }
5886        print <<XML;
5887</outline>
5888</body>
5889</opml>
5890XML
5891}