Andrew's git / gitweb.git / http.c
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http.con commit http.c: don't rewrite the user:passwd string multiple times (a94cf2c)
   1#include "http.h"
   2#include "pack.h"
   3#include "sideband.h"
   4#include "run-command.h"
   5#include "url.h"
   6#include "credential.h"
   7#include "version.h"
   8
   9int active_requests;
  10int http_is_verbose;
  11size_t http_post_buffer = 16 * LARGE_PACKET_MAX;
  12
  13#if LIBCURL_VERSION_NUM >= 0x070a06
  14#define LIBCURL_CAN_HANDLE_AUTH_ANY
  15#endif
  16
  17static int min_curl_sessions = 1;
  18static int curl_session_count;
  19#ifdef USE_CURL_MULTI
  20static int max_requests = -1;
  21static CURLM *curlm;
  22#endif
  23#ifndef NO_CURL_EASY_DUPHANDLE
  24static CURL *curl_default;
  25#endif
  26
  27#define PREV_BUF_SIZE 4096
  28#define RANGE_HEADER_SIZE 30
  29
  30char curl_errorstr[CURL_ERROR_SIZE];
  31
  32static int curl_ssl_verify = -1;
  33static const char *ssl_cert;
  34#if LIBCURL_VERSION_NUM >= 0x070903
  35static const char *ssl_key;
  36#endif
  37#if LIBCURL_VERSION_NUM >= 0x070908
  38static const char *ssl_capath;
  39#endif
  40static const char *ssl_cainfo;
  41static long curl_low_speed_limit = -1;
  42static long curl_low_speed_time = -1;
  43static int curl_ftp_no_epsv;
  44static const char *curl_http_proxy;
  45static const char *curl_cookie_file;
  46static struct credential http_auth = CREDENTIAL_INIT;
  47static int http_proactive_auth;
  48static const char *user_agent;
  49
  50#if LIBCURL_VERSION_NUM >= 0x071700
  51/* Use CURLOPT_KEYPASSWD as is */
  52#elif LIBCURL_VERSION_NUM >= 0x070903
  53#define CURLOPT_KEYPASSWD CURLOPT_SSLKEYPASSWD
  54#else
  55#define CURLOPT_KEYPASSWD CURLOPT_SSLCERTPASSWD
  56#endif
  57
  58static struct credential cert_auth = CREDENTIAL_INIT;
  59static int ssl_cert_password_required;
  60
  61static struct curl_slist *pragma_header;
  62static struct curl_slist *no_pragma_header;
  63
  64static struct active_request_slot *active_queue_head;
  65
  66size_t fread_buffer(char *ptr, size_t eltsize, size_t nmemb, void *buffer_)
  67{
  68        size_t size = eltsize * nmemb;
  69        struct buffer *buffer = buffer_;
  70
  71        if (size > buffer->buf.len - buffer->posn)
  72                size = buffer->buf.len - buffer->posn;
  73        memcpy(ptr, buffer->buf.buf + buffer->posn, size);
  74        buffer->posn += size;
  75
  76        return size;
  77}
  78
  79#ifndef NO_CURL_IOCTL
  80curlioerr ioctl_buffer(CURL *handle, int cmd, void *clientp)
  81{
  82        struct buffer *buffer = clientp;
  83
  84        switch (cmd) {
  85        case CURLIOCMD_NOP:
  86                return CURLIOE_OK;
  87
  88        case CURLIOCMD_RESTARTREAD:
  89                buffer->posn = 0;
  90                return CURLIOE_OK;
  91
  92        default:
  93                return CURLIOE_UNKNOWNCMD;
  94        }
  95}
  96#endif
  97
  98size_t fwrite_buffer(char *ptr, size_t eltsize, size_t nmemb, void *buffer_)
  99{
 100        size_t size = eltsize * nmemb;
 101        struct strbuf *buffer = buffer_;
 102
 103        strbuf_add(buffer, ptr, size);
 104        return size;
 105}
 106
 107size_t fwrite_null(char *ptr, size_t eltsize, size_t nmemb, void *strbuf)
 108{
 109        return eltsize * nmemb;
 110}
 111
 112#ifdef USE_CURL_MULTI
 113static void process_curl_messages(void)
 114{
 115        int num_messages;
 116        struct active_request_slot *slot;
 117        CURLMsg *curl_message = curl_multi_info_read(curlm, &num_messages);
 118
 119        while (curl_message != NULL) {
 120                if (curl_message->msg == CURLMSG_DONE) {
 121                        int curl_result = curl_message->data.result;
 122                        slot = active_queue_head;
 123                        while (slot != NULL &&
 124                               slot->curl != curl_message->easy_handle)
 125                                slot = slot->next;
 126                        if (slot != NULL) {
 127                                curl_multi_remove_handle(curlm, slot->curl);
 128                                slot->curl_result = curl_result;
 129                                finish_active_slot(slot);
 130                        } else {
 131                                fprintf(stderr, "Received DONE message for unknown request!\n");
 132                        }
 133                } else {
 134                        fprintf(stderr, "Unknown CURL message received: %d\n",
 135                                (int)curl_message->msg);
 136                }
 137                curl_message = curl_multi_info_read(curlm, &num_messages);
 138        }
 139}
 140#endif
 141
 142static int http_options(const char *var, const char *value, void *cb)
 143{
 144        if (!strcmp("http.sslverify", var)) {
 145                curl_ssl_verify = git_config_bool(var, value);
 146                return 0;
 147        }
 148        if (!strcmp("http.sslcert", var))
 149                return git_config_string(&ssl_cert, var, value);
 150#if LIBCURL_VERSION_NUM >= 0x070903
 151        if (!strcmp("http.sslkey", var))
 152                return git_config_string(&ssl_key, var, value);
 153#endif
 154#if LIBCURL_VERSION_NUM >= 0x070908
 155        if (!strcmp("http.sslcapath", var))
 156                return git_config_string(&ssl_capath, var, value);
 157#endif
 158        if (!strcmp("http.sslcainfo", var))
 159                return git_config_string(&ssl_cainfo, var, value);
 160        if (!strcmp("http.sslcertpasswordprotected", var)) {
 161                if (git_config_bool(var, value))
 162                        ssl_cert_password_required = 1;
 163                return 0;
 164        }
 165        if (!strcmp("http.minsessions", var)) {
 166                min_curl_sessions = git_config_int(var, value);
 167#ifndef USE_CURL_MULTI
 168                if (min_curl_sessions > 1)
 169                        min_curl_sessions = 1;
 170#endif
 171                return 0;
 172        }
 173#ifdef USE_CURL_MULTI
 174        if (!strcmp("http.maxrequests", var)) {
 175                max_requests = git_config_int(var, value);
 176                return 0;
 177        }
 178#endif
 179        if (!strcmp("http.lowspeedlimit", var)) {
 180                curl_low_speed_limit = (long)git_config_int(var, value);
 181                return 0;
 182        }
 183        if (!strcmp("http.lowspeedtime", var)) {
 184                curl_low_speed_time = (long)git_config_int(var, value);
 185                return 0;
 186        }
 187
 188        if (!strcmp("http.noepsv", var)) {
 189                curl_ftp_no_epsv = git_config_bool(var, value);
 190                return 0;
 191        }
 192        if (!strcmp("http.proxy", var))
 193                return git_config_string(&curl_http_proxy, var, value);
 194
 195        if (!strcmp("http.cookiefile", var))
 196                return git_config_string(&curl_cookie_file, var, value);
 197
 198        if (!strcmp("http.postbuffer", var)) {
 199                http_post_buffer = git_config_int(var, value);
 200                if (http_post_buffer < LARGE_PACKET_MAX)
 201                        http_post_buffer = LARGE_PACKET_MAX;
 202                return 0;
 203        }
 204
 205        if (!strcmp("http.useragent", var))
 206                return git_config_string(&user_agent, var, value);
 207
 208        /* Fall back on the default ones */
 209        return git_default_config(var, value, cb);
 210}
 211
 212static void init_curl_http_auth(CURL *result)
 213{
 214        if (!http_auth.username)
 215                return;
 216
 217        credential_fill(&http_auth);
 218
 219#if LIBCURL_VERSION_NUM >= 0x071301
 220        curl_easy_setopt(result, CURLOPT_USERNAME, http_auth.username);
 221        curl_easy_setopt(result, CURLOPT_PASSWORD, http_auth.password);
 222#else
 223        {
 224                static struct strbuf up = STRBUF_INIT;
 225                /*
 226                 * Note that we assume we only ever have a single set of
 227                 * credentials in a given program run, so we do not have
 228                 * to worry about updating this buffer, only setting its
 229                 * initial value.
 230                 */
 231                if (!up.len)
 232                        strbuf_addf(&up, "%s:%s",
 233                                http_auth.username, http_auth.password);
 234                curl_easy_setopt(result, CURLOPT_USERPWD, up.buf);
 235        }
 236#endif
 237}
 238
 239static int has_cert_password(void)
 240{
 241        if (ssl_cert == NULL || ssl_cert_password_required != 1)
 242                return 0;
 243        if (!cert_auth.password) {
 244                cert_auth.protocol = xstrdup("cert");
 245                cert_auth.username = xstrdup("");
 246                cert_auth.path = xstrdup(ssl_cert);
 247                credential_fill(&cert_auth);
 248        }
 249        return 1;
 250}
 251
 252static CURL *get_curl_handle(void)
 253{
 254        CURL *result = curl_easy_init();
 255
 256        if (!curl_ssl_verify) {
 257                curl_easy_setopt(result, CURLOPT_SSL_VERIFYPEER, 0);
 258                curl_easy_setopt(result, CURLOPT_SSL_VERIFYHOST, 0);
 259        } else {
 260                /* Verify authenticity of the peer's certificate */
 261                curl_easy_setopt(result, CURLOPT_SSL_VERIFYPEER, 1);
 262                /* The name in the cert must match whom we tried to connect */
 263                curl_easy_setopt(result, CURLOPT_SSL_VERIFYHOST, 2);
 264        }
 265
 266#if LIBCURL_VERSION_NUM >= 0x070907
 267        curl_easy_setopt(result, CURLOPT_NETRC, CURL_NETRC_OPTIONAL);
 268#endif
 269#ifdef LIBCURL_CAN_HANDLE_AUTH_ANY
 270        curl_easy_setopt(result, CURLOPT_HTTPAUTH, CURLAUTH_ANY);
 271#endif
 272
 273        if (http_proactive_auth)
 274                init_curl_http_auth(result);
 275
 276        if (ssl_cert != NULL)
 277                curl_easy_setopt(result, CURLOPT_SSLCERT, ssl_cert);
 278        if (has_cert_password())
 279                curl_easy_setopt(result, CURLOPT_KEYPASSWD, cert_auth.password);
 280#if LIBCURL_VERSION_NUM >= 0x070903
 281        if (ssl_key != NULL)
 282                curl_easy_setopt(result, CURLOPT_SSLKEY, ssl_key);
 283#endif
 284#if LIBCURL_VERSION_NUM >= 0x070908
 285        if (ssl_capath != NULL)
 286                curl_easy_setopt(result, CURLOPT_CAPATH, ssl_capath);
 287#endif
 288        if (ssl_cainfo != NULL)
 289                curl_easy_setopt(result, CURLOPT_CAINFO, ssl_cainfo);
 290        curl_easy_setopt(result, CURLOPT_FAILONERROR, 1);
 291
 292        if (curl_low_speed_limit > 0 && curl_low_speed_time > 0) {
 293                curl_easy_setopt(result, CURLOPT_LOW_SPEED_LIMIT,
 294                                 curl_low_speed_limit);
 295                curl_easy_setopt(result, CURLOPT_LOW_SPEED_TIME,
 296                                 curl_low_speed_time);
 297        }
 298
 299        curl_easy_setopt(result, CURLOPT_FOLLOWLOCATION, 1);
 300#if LIBCURL_VERSION_NUM >= 0x071301
 301        curl_easy_setopt(result, CURLOPT_POSTREDIR, CURL_REDIR_POST_ALL);
 302#elif LIBCURL_VERSION_NUM >= 0x071101
 303        curl_easy_setopt(result, CURLOPT_POST301, 1);
 304#endif
 305
 306        if (getenv("GIT_CURL_VERBOSE"))
 307                curl_easy_setopt(result, CURLOPT_VERBOSE, 1);
 308
 309        curl_easy_setopt(result, CURLOPT_USERAGENT,
 310                user_agent ? user_agent : git_user_agent());
 311
 312        if (curl_ftp_no_epsv)
 313                curl_easy_setopt(result, CURLOPT_FTP_USE_EPSV, 0);
 314
 315        if (curl_http_proxy) {
 316                curl_easy_setopt(result, CURLOPT_PROXY, curl_http_proxy);
 317                curl_easy_setopt(result, CURLOPT_PROXYAUTH, CURLAUTH_ANY);
 318        }
 319
 320        return result;
 321}
 322
 323static void set_from_env(const char **var, const char *envname)
 324{
 325        const char *val = getenv(envname);
 326        if (val)
 327                *var = val;
 328}
 329
 330void http_init(struct remote *remote, const char *url, int proactive_auth)
 331{
 332        char *low_speed_limit;
 333        char *low_speed_time;
 334
 335        http_is_verbose = 0;
 336
 337        git_config(http_options, NULL);
 338
 339        curl_global_init(CURL_GLOBAL_ALL);
 340
 341        http_proactive_auth = proactive_auth;
 342
 343        if (remote && remote->http_proxy)
 344                curl_http_proxy = xstrdup(remote->http_proxy);
 345
 346        pragma_header = curl_slist_append(pragma_header, "Pragma: no-cache");
 347        no_pragma_header = curl_slist_append(no_pragma_header, "Pragma:");
 348
 349#ifdef USE_CURL_MULTI
 350        {
 351                char *http_max_requests = getenv("GIT_HTTP_MAX_REQUESTS");
 352                if (http_max_requests != NULL)
 353                        max_requests = atoi(http_max_requests);
 354        }
 355
 356        curlm = curl_multi_init();
 357        if (curlm == NULL) {
 358                fprintf(stderr, "Error creating curl multi handle.\n");
 359                exit(1);
 360        }
 361#endif
 362
 363        if (getenv("GIT_SSL_NO_VERIFY"))
 364                curl_ssl_verify = 0;
 365
 366        set_from_env(&ssl_cert, "GIT_SSL_CERT");
 367#if LIBCURL_VERSION_NUM >= 0x070903
 368        set_from_env(&ssl_key, "GIT_SSL_KEY");
 369#endif
 370#if LIBCURL_VERSION_NUM >= 0x070908
 371        set_from_env(&ssl_capath, "GIT_SSL_CAPATH");
 372#endif
 373        set_from_env(&ssl_cainfo, "GIT_SSL_CAINFO");
 374
 375        set_from_env(&user_agent, "GIT_HTTP_USER_AGENT");
 376
 377        low_speed_limit = getenv("GIT_HTTP_LOW_SPEED_LIMIT");
 378        if (low_speed_limit != NULL)
 379                curl_low_speed_limit = strtol(low_speed_limit, NULL, 10);
 380        low_speed_time = getenv("GIT_HTTP_LOW_SPEED_TIME");
 381        if (low_speed_time != NULL)
 382                curl_low_speed_time = strtol(low_speed_time, NULL, 10);
 383
 384        if (curl_ssl_verify == -1)
 385                curl_ssl_verify = 1;
 386
 387        curl_session_count = 0;
 388#ifdef USE_CURL_MULTI
 389        if (max_requests < 1)
 390                max_requests = DEFAULT_MAX_REQUESTS;
 391#endif
 392
 393        if (getenv("GIT_CURL_FTP_NO_EPSV"))
 394                curl_ftp_no_epsv = 1;
 395
 396        if (url) {
 397                credential_from_url(&http_auth, url);
 398                if (!ssl_cert_password_required &&
 399                    getenv("GIT_SSL_CERT_PASSWORD_PROTECTED") &&
 400                    !prefixcmp(url, "https://"))
 401                        ssl_cert_password_required = 1;
 402        }
 403
 404#ifndef NO_CURL_EASY_DUPHANDLE
 405        curl_default = get_curl_handle();
 406#endif
 407}
 408
 409void http_cleanup(void)
 410{
 411        struct active_request_slot *slot = active_queue_head;
 412
 413        while (slot != NULL) {
 414                struct active_request_slot *next = slot->next;
 415                if (slot->curl != NULL) {
 416#ifdef USE_CURL_MULTI
 417                        curl_multi_remove_handle(curlm, slot->curl);
 418#endif
 419                        curl_easy_cleanup(slot->curl);
 420                }
 421                free(slot);
 422                slot = next;
 423        }
 424        active_queue_head = NULL;
 425
 426#ifndef NO_CURL_EASY_DUPHANDLE
 427        curl_easy_cleanup(curl_default);
 428#endif
 429
 430#ifdef USE_CURL_MULTI
 431        curl_multi_cleanup(curlm);
 432#endif
 433        curl_global_cleanup();
 434
 435        curl_slist_free_all(pragma_header);
 436        pragma_header = NULL;
 437
 438        curl_slist_free_all(no_pragma_header);
 439        no_pragma_header = NULL;
 440
 441        if (curl_http_proxy) {
 442                free((void *)curl_http_proxy);
 443                curl_http_proxy = NULL;
 444        }
 445
 446        if (cert_auth.password != NULL) {
 447                memset(cert_auth.password, 0, strlen(cert_auth.password));
 448                free(cert_auth.password);
 449                cert_auth.password = NULL;
 450        }
 451        ssl_cert_password_required = 0;
 452}
 453
 454struct active_request_slot *get_active_slot(void)
 455{
 456        struct active_request_slot *slot = active_queue_head;
 457        struct active_request_slot *newslot;
 458
 459#ifdef USE_CURL_MULTI
 460        int num_transfers;
 461
 462        /* Wait for a slot to open up if the queue is full */
 463        while (active_requests >= max_requests) {
 464                curl_multi_perform(curlm, &num_transfers);
 465                if (num_transfers < active_requests)
 466                        process_curl_messages();
 467        }
 468#endif
 469
 470        while (slot != NULL && slot->in_use)
 471                slot = slot->next;
 472
 473        if (slot == NULL) {
 474                newslot = xmalloc(sizeof(*newslot));
 475                newslot->curl = NULL;
 476                newslot->in_use = 0;
 477                newslot->next = NULL;
 478
 479                slot = active_queue_head;
 480                if (slot == NULL) {
 481                        active_queue_head = newslot;
 482                } else {
 483                        while (slot->next != NULL)
 484                                slot = slot->next;
 485                        slot->next = newslot;
 486                }
 487                slot = newslot;
 488        }
 489
 490        if (slot->curl == NULL) {
 491#ifdef NO_CURL_EASY_DUPHANDLE
 492                slot->curl = get_curl_handle();
 493#else
 494                slot->curl = curl_easy_duphandle(curl_default);
 495#endif
 496                curl_session_count++;
 497        }
 498
 499        active_requests++;
 500        slot->in_use = 1;
 501        slot->results = NULL;
 502        slot->finished = NULL;
 503        slot->callback_data = NULL;
 504        slot->callback_func = NULL;
 505        curl_easy_setopt(slot->curl, CURLOPT_COOKIEFILE, curl_cookie_file);
 506        curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, pragma_header);
 507        curl_easy_setopt(slot->curl, CURLOPT_ERRORBUFFER, curl_errorstr);
 508        curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, NULL);
 509        curl_easy_setopt(slot->curl, CURLOPT_READFUNCTION, NULL);
 510        curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, NULL);
 511        curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDS, NULL);
 512        curl_easy_setopt(slot->curl, CURLOPT_UPLOAD, 0);
 513        curl_easy_setopt(slot->curl, CURLOPT_HTTPGET, 1);
 514        if (http_auth.password)
 515                init_curl_http_auth(slot->curl);
 516
 517        return slot;
 518}
 519
 520int start_active_slot(struct active_request_slot *slot)
 521{
 522#ifdef USE_CURL_MULTI
 523        CURLMcode curlm_result = curl_multi_add_handle(curlm, slot->curl);
 524        int num_transfers;
 525
 526        if (curlm_result != CURLM_OK &&
 527            curlm_result != CURLM_CALL_MULTI_PERFORM) {
 528                active_requests--;
 529                slot->in_use = 0;
 530                return 0;
 531        }
 532
 533        /*
 534         * We know there must be something to do, since we just added
 535         * something.
 536         */
 537        curl_multi_perform(curlm, &num_transfers);
 538#endif
 539        return 1;
 540}
 541
 542#ifdef USE_CURL_MULTI
 543struct fill_chain {
 544        void *data;
 545        int (*fill)(void *);
 546        struct fill_chain *next;
 547};
 548
 549static struct fill_chain *fill_cfg;
 550
 551void add_fill_function(void *data, int (*fill)(void *))
 552{
 553        struct fill_chain *new = xmalloc(sizeof(*new));
 554        struct fill_chain **linkp = &fill_cfg;
 555        new->data = data;
 556        new->fill = fill;
 557        new->next = NULL;
 558        while (*linkp)
 559                linkp = &(*linkp)->next;
 560        *linkp = new;
 561}
 562
 563void fill_active_slots(void)
 564{
 565        struct active_request_slot *slot = active_queue_head;
 566
 567        while (active_requests < max_requests) {
 568                struct fill_chain *fill;
 569                for (fill = fill_cfg; fill; fill = fill->next)
 570                        if (fill->fill(fill->data))
 571                                break;
 572
 573                if (!fill)
 574                        break;
 575        }
 576
 577        while (slot != NULL) {
 578                if (!slot->in_use && slot->curl != NULL
 579                        && curl_session_count > min_curl_sessions) {
 580                        curl_easy_cleanup(slot->curl);
 581                        slot->curl = NULL;
 582                        curl_session_count--;
 583                }
 584                slot = slot->next;
 585        }
 586}
 587
 588void step_active_slots(void)
 589{
 590        int num_transfers;
 591        CURLMcode curlm_result;
 592
 593        do {
 594                curlm_result = curl_multi_perform(curlm, &num_transfers);
 595        } while (curlm_result == CURLM_CALL_MULTI_PERFORM);
 596        if (num_transfers < active_requests) {
 597                process_curl_messages();
 598                fill_active_slots();
 599        }
 600}
 601#endif
 602
 603void run_active_slot(struct active_request_slot *slot)
 604{
 605#ifdef USE_CURL_MULTI
 606        fd_set readfds;
 607        fd_set writefds;
 608        fd_set excfds;
 609        int max_fd;
 610        struct timeval select_timeout;
 611        int finished = 0;
 612
 613        slot->finished = &finished;
 614        while (!finished) {
 615                step_active_slots();
 616
 617                if (slot->in_use) {
 618#if LIBCURL_VERSION_NUM >= 0x070f04
 619                        long curl_timeout;
 620                        curl_multi_timeout(curlm, &curl_timeout);
 621                        if (curl_timeout == 0) {
 622                                continue;
 623                        } else if (curl_timeout == -1) {
 624                                select_timeout.tv_sec  = 0;
 625                                select_timeout.tv_usec = 50000;
 626                        } else {
 627                                select_timeout.tv_sec  =  curl_timeout / 1000;
 628                                select_timeout.tv_usec = (curl_timeout % 1000) * 1000;
 629                        }
 630#else
 631                        select_timeout.tv_sec  = 0;
 632                        select_timeout.tv_usec = 50000;
 633#endif
 634
 635                        max_fd = -1;
 636                        FD_ZERO(&readfds);
 637                        FD_ZERO(&writefds);
 638                        FD_ZERO(&excfds);
 639                        curl_multi_fdset(curlm, &readfds, &writefds, &excfds, &max_fd);
 640
 641                        /*
 642                         * It can happen that curl_multi_timeout returns a pathologically
 643                         * long timeout when curl_multi_fdset returns no file descriptors
 644                         * to read.  See commit message for more details.
 645                         */
 646                        if (max_fd < 0 &&
 647                            (select_timeout.tv_sec > 0 ||
 648                             select_timeout.tv_usec > 50000)) {
 649                                select_timeout.tv_sec  = 0;
 650                                select_timeout.tv_usec = 50000;
 651                        }
 652
 653                        select(max_fd+1, &readfds, &writefds, &excfds, &select_timeout);
 654                }
 655        }
 656#else
 657        while (slot->in_use) {
 658                slot->curl_result = curl_easy_perform(slot->curl);
 659                finish_active_slot(slot);
 660        }
 661#endif
 662}
 663
 664static void closedown_active_slot(struct active_request_slot *slot)
 665{
 666        active_requests--;
 667        slot->in_use = 0;
 668}
 669
 670static void release_active_slot(struct active_request_slot *slot)
 671{
 672        closedown_active_slot(slot);
 673        if (slot->curl && curl_session_count > min_curl_sessions) {
 674#ifdef USE_CURL_MULTI
 675                curl_multi_remove_handle(curlm, slot->curl);
 676#endif
 677                curl_easy_cleanup(slot->curl);
 678                slot->curl = NULL;
 679                curl_session_count--;
 680        }
 681#ifdef USE_CURL_MULTI
 682        fill_active_slots();
 683#endif
 684}
 685
 686void finish_active_slot(struct active_request_slot *slot)
 687{
 688        closedown_active_slot(slot);
 689        curl_easy_getinfo(slot->curl, CURLINFO_HTTP_CODE, &slot->http_code);
 690
 691        if (slot->finished != NULL)
 692                (*slot->finished) = 1;
 693
 694        /* Store slot results so they can be read after the slot is reused */
 695        if (slot->results != NULL) {
 696                slot->results->curl_result = slot->curl_result;
 697                slot->results->http_code = slot->http_code;
 698        }
 699
 700        /* Run callback if appropriate */
 701        if (slot->callback_func != NULL)
 702                slot->callback_func(slot->callback_data);
 703}
 704
 705void finish_all_active_slots(void)
 706{
 707        struct active_request_slot *slot = active_queue_head;
 708
 709        while (slot != NULL)
 710                if (slot->in_use) {
 711                        run_active_slot(slot);
 712                        slot = active_queue_head;
 713                } else {
 714                        slot = slot->next;
 715                }
 716}
 717
 718/* Helpers for modifying and creating URLs */
 719static inline int needs_quote(int ch)
 720{
 721        if (((ch >= 'A') && (ch <= 'Z'))
 722                        || ((ch >= 'a') && (ch <= 'z'))
 723                        || ((ch >= '0') && (ch <= '9'))
 724                        || (ch == '/')
 725                        || (ch == '-')
 726                        || (ch == '.'))
 727                return 0;
 728        return 1;
 729}
 730
 731static char *quote_ref_url(const char *base, const char *ref)
 732{
 733        struct strbuf buf = STRBUF_INIT;
 734        const char *cp;
 735        int ch;
 736
 737        end_url_with_slash(&buf, base);
 738
 739        for (cp = ref; (ch = *cp) != 0; cp++)
 740                if (needs_quote(ch))
 741                        strbuf_addf(&buf, "%%%02x", ch);
 742                else
 743                        strbuf_addch(&buf, *cp);
 744
 745        return strbuf_detach(&buf, NULL);
 746}
 747
 748void append_remote_object_url(struct strbuf *buf, const char *url,
 749                              const char *hex,
 750                              int only_two_digit_prefix)
 751{
 752        end_url_with_slash(buf, url);
 753
 754        strbuf_addf(buf, "objects/%.*s/", 2, hex);
 755        if (!only_two_digit_prefix)
 756                strbuf_addf(buf, "%s", hex+2);
 757}
 758
 759char *get_remote_object_url(const char *url, const char *hex,
 760                            int only_two_digit_prefix)
 761{
 762        struct strbuf buf = STRBUF_INIT;
 763        append_remote_object_url(&buf, url, hex, only_two_digit_prefix);
 764        return strbuf_detach(&buf, NULL);
 765}
 766
 767int handle_curl_result(struct slot_results *results)
 768{
 769        if (results->curl_result == CURLE_OK) {
 770                credential_approve(&http_auth);
 771                return HTTP_OK;
 772        } else if (missing_target(results))
 773                return HTTP_MISSING_TARGET;
 774        else if (results->http_code == 401) {
 775                if (http_auth.username && http_auth.password) {
 776                        credential_reject(&http_auth);
 777                        return HTTP_NOAUTH;
 778                } else {
 779                        credential_fill(&http_auth);
 780                        return HTTP_REAUTH;
 781                }
 782        } else {
 783#if LIBCURL_VERSION_NUM >= 0x070c00
 784                if (!curl_errorstr[0])
 785                        strlcpy(curl_errorstr,
 786                                curl_easy_strerror(results->curl_result),
 787                                sizeof(curl_errorstr));
 788#endif
 789                return HTTP_ERROR;
 790        }
 791}
 792
 793/* http_request() targets */
 794#define HTTP_REQUEST_STRBUF     0
 795#define HTTP_REQUEST_FILE       1
 796
 797static int http_request(const char *url, struct strbuf *type,
 798                        void *result, int target, int options)
 799{
 800        struct active_request_slot *slot;
 801        struct slot_results results;
 802        struct curl_slist *headers = NULL;
 803        struct strbuf buf = STRBUF_INIT;
 804        int ret;
 805
 806        slot = get_active_slot();
 807        slot->results = &results;
 808        curl_easy_setopt(slot->curl, CURLOPT_HTTPGET, 1);
 809
 810        if (result == NULL) {
 811                curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 1);
 812        } else {
 813                curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 0);
 814                curl_easy_setopt(slot->curl, CURLOPT_FILE, result);
 815
 816                if (target == HTTP_REQUEST_FILE) {
 817                        long posn = ftell(result);
 818                        curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION,
 819                                         fwrite);
 820                        if (posn > 0) {
 821                                strbuf_addf(&buf, "Range: bytes=%ld-", posn);
 822                                headers = curl_slist_append(headers, buf.buf);
 823                                strbuf_reset(&buf);
 824                        }
 825                } else
 826                        curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION,
 827                                         fwrite_buffer);
 828        }
 829
 830        strbuf_addstr(&buf, "Pragma:");
 831        if (options & HTTP_NO_CACHE)
 832                strbuf_addstr(&buf, " no-cache");
 833
 834        headers = curl_slist_append(headers, buf.buf);
 835
 836        curl_easy_setopt(slot->curl, CURLOPT_URL, url);
 837        curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, headers);
 838        curl_easy_setopt(slot->curl, CURLOPT_ENCODING, "gzip");
 839
 840        if (start_active_slot(slot)) {
 841                run_active_slot(slot);
 842                ret = handle_curl_result(&results);
 843        } else {
 844                error("Unable to start HTTP request for %s", url);
 845                ret = HTTP_START_FAILED;
 846        }
 847
 848        if (type) {
 849                char *t;
 850                strbuf_reset(type);
 851                curl_easy_getinfo(slot->curl, CURLINFO_CONTENT_TYPE, &t);
 852                if (t)
 853                        strbuf_addstr(type, t);
 854        }
 855
 856        curl_slist_free_all(headers);
 857        strbuf_release(&buf);
 858
 859        return ret;
 860}
 861
 862static int http_request_reauth(const char *url,
 863                               struct strbuf *type,
 864                               void *result, int target,
 865                               int options)
 866{
 867        int ret = http_request(url, type, result, target, options);
 868        if (ret != HTTP_REAUTH)
 869                return ret;
 870        return http_request(url, type, result, target, options);
 871}
 872
 873int http_get_strbuf(const char *url,
 874                    struct strbuf *type,
 875                    struct strbuf *result, int options)
 876{
 877        return http_request_reauth(url, type, result,
 878                                   HTTP_REQUEST_STRBUF, options);
 879}
 880
 881/*
 882 * Downloads a URL and stores the result in the given file.
 883 *
 884 * If a previous interrupted download is detected (i.e. a previous temporary
 885 * file is still around) the download is resumed.
 886 */
 887static int http_get_file(const char *url, const char *filename, int options)
 888{
 889        int ret;
 890        struct strbuf tmpfile = STRBUF_INIT;
 891        FILE *result;
 892
 893        strbuf_addf(&tmpfile, "%s.temp", filename);
 894        result = fopen(tmpfile.buf, "a");
 895        if (! result) {
 896                error("Unable to open local file %s", tmpfile.buf);
 897                ret = HTTP_ERROR;
 898                goto cleanup;
 899        }
 900
 901        ret = http_request_reauth(url, NULL, result, HTTP_REQUEST_FILE, options);
 902        fclose(result);
 903
 904        if ((ret == HTTP_OK) && move_temp_to_file(tmpfile.buf, filename))
 905                ret = HTTP_ERROR;
 906cleanup:
 907        strbuf_release(&tmpfile);
 908        return ret;
 909}
 910
 911int http_error(const char *url, int ret)
 912{
 913        /* http_request has already handled HTTP_START_FAILED. */
 914        if (ret != HTTP_START_FAILED)
 915                error("%s while accessing %s", curl_errorstr, url);
 916
 917        return ret;
 918}
 919
 920int http_fetch_ref(const char *base, struct ref *ref)
 921{
 922        char *url;
 923        struct strbuf buffer = STRBUF_INIT;
 924        int ret = -1;
 925
 926        url = quote_ref_url(base, ref->name);
 927        if (http_get_strbuf(url, NULL, &buffer, HTTP_NO_CACHE) == HTTP_OK) {
 928                strbuf_rtrim(&buffer);
 929                if (buffer.len == 40)
 930                        ret = get_sha1_hex(buffer.buf, ref->old_sha1);
 931                else if (!prefixcmp(buffer.buf, "ref: ")) {
 932                        ref->symref = xstrdup(buffer.buf + 5);
 933                        ret = 0;
 934                }
 935        }
 936
 937        strbuf_release(&buffer);
 938        free(url);
 939        return ret;
 940}
 941
 942/* Helpers for fetching packs */
 943static char *fetch_pack_index(unsigned char *sha1, const char *base_url)
 944{
 945        char *url, *tmp;
 946        struct strbuf buf = STRBUF_INIT;
 947
 948        if (http_is_verbose)
 949                fprintf(stderr, "Getting index for pack %s\n", sha1_to_hex(sha1));
 950
 951        end_url_with_slash(&buf, base_url);
 952        strbuf_addf(&buf, "objects/pack/pack-%s.idx", sha1_to_hex(sha1));
 953        url = strbuf_detach(&buf, NULL);
 954
 955        strbuf_addf(&buf, "%s.temp", sha1_pack_index_name(sha1));
 956        tmp = strbuf_detach(&buf, NULL);
 957
 958        if (http_get_file(url, tmp, 0) != HTTP_OK) {
 959                error("Unable to get pack index %s", url);
 960                free(tmp);
 961                tmp = NULL;
 962        }
 963
 964        free(url);
 965        return tmp;
 966}
 967
 968static int fetch_and_setup_pack_index(struct packed_git **packs_head,
 969        unsigned char *sha1, const char *base_url)
 970{
 971        struct packed_git *new_pack;
 972        char *tmp_idx = NULL;
 973        int ret;
 974
 975        if (has_pack_index(sha1)) {
 976                new_pack = parse_pack_index(sha1, NULL);
 977                if (!new_pack)
 978                        return -1; /* parse_pack_index() already issued error message */
 979                goto add_pack;
 980        }
 981
 982        tmp_idx = fetch_pack_index(sha1, base_url);
 983        if (!tmp_idx)
 984                return -1;
 985
 986        new_pack = parse_pack_index(sha1, tmp_idx);
 987        if (!new_pack) {
 988                unlink(tmp_idx);
 989                free(tmp_idx);
 990
 991                return -1; /* parse_pack_index() already issued error message */
 992        }
 993
 994        ret = verify_pack_index(new_pack);
 995        if (!ret) {
 996                close_pack_index(new_pack);
 997                ret = move_temp_to_file(tmp_idx, sha1_pack_index_name(sha1));
 998        }
 999        free(tmp_idx);
1000        if (ret)
1001                return -1;
1002
1003add_pack:
1004        new_pack->next = *packs_head;
1005        *packs_head = new_pack;
1006        return 0;
1007}
1008
1009int http_get_info_packs(const char *base_url, struct packed_git **packs_head)
1010{
1011        int ret = 0, i = 0;
1012        char *url, *data;
1013        struct strbuf buf = STRBUF_INIT;
1014        unsigned char sha1[20];
1015
1016        end_url_with_slash(&buf, base_url);
1017        strbuf_addstr(&buf, "objects/info/packs");
1018        url = strbuf_detach(&buf, NULL);
1019
1020        ret = http_get_strbuf(url, NULL, &buf, HTTP_NO_CACHE);
1021        if (ret != HTTP_OK)
1022                goto cleanup;
1023
1024        data = buf.buf;
1025        while (i < buf.len) {
1026                switch (data[i]) {
1027                case 'P':
1028                        i++;
1029                        if (i + 52 <= buf.len &&
1030                            !prefixcmp(data + i, " pack-") &&
1031                            !prefixcmp(data + i + 46, ".pack\n")) {
1032                                get_sha1_hex(data + i + 6, sha1);
1033                                fetch_and_setup_pack_index(packs_head, sha1,
1034                                                      base_url);
1035                                i += 51;
1036                                break;
1037                        }
1038                default:
1039                        while (i < buf.len && data[i] != '\n')
1040                                i++;
1041                }
1042                i++;
1043        }
1044
1045cleanup:
1046        free(url);
1047        return ret;
1048}
1049
1050void release_http_pack_request(struct http_pack_request *preq)
1051{
1052        if (preq->packfile != NULL) {
1053                fclose(preq->packfile);
1054                preq->packfile = NULL;
1055        }
1056        if (preq->range_header != NULL) {
1057                curl_slist_free_all(preq->range_header);
1058                preq->range_header = NULL;
1059        }
1060        preq->slot = NULL;
1061        free(preq->url);
1062}
1063
1064int finish_http_pack_request(struct http_pack_request *preq)
1065{
1066        struct packed_git **lst;
1067        struct packed_git *p = preq->target;
1068        char *tmp_idx;
1069        struct child_process ip;
1070        const char *ip_argv[8];
1071
1072        close_pack_index(p);
1073
1074        fclose(preq->packfile);
1075        preq->packfile = NULL;
1076
1077        lst = preq->lst;
1078        while (*lst != p)
1079                lst = &((*lst)->next);
1080        *lst = (*lst)->next;
1081
1082        tmp_idx = xstrdup(preq->tmpfile);
1083        strcpy(tmp_idx + strlen(tmp_idx) - strlen(".pack.temp"),
1084               ".idx.temp");
1085
1086        ip_argv[0] = "index-pack";
1087        ip_argv[1] = "-o";
1088        ip_argv[2] = tmp_idx;
1089        ip_argv[3] = preq->tmpfile;
1090        ip_argv[4] = NULL;
1091
1092        memset(&ip, 0, sizeof(ip));
1093        ip.argv = ip_argv;
1094        ip.git_cmd = 1;
1095        ip.no_stdin = 1;
1096        ip.no_stdout = 1;
1097
1098        if (run_command(&ip)) {
1099                unlink(preq->tmpfile);
1100                unlink(tmp_idx);
1101                free(tmp_idx);
1102                return -1;
1103        }
1104
1105        unlink(sha1_pack_index_name(p->sha1));
1106
1107        if (move_temp_to_file(preq->tmpfile, sha1_pack_name(p->sha1))
1108         || move_temp_to_file(tmp_idx, sha1_pack_index_name(p->sha1))) {
1109                free(tmp_idx);
1110                return -1;
1111        }
1112
1113        install_packed_git(p);
1114        free(tmp_idx);
1115        return 0;
1116}
1117
1118struct http_pack_request *new_http_pack_request(
1119        struct packed_git *target, const char *base_url)
1120{
1121        long prev_posn = 0;
1122        char range[RANGE_HEADER_SIZE];
1123        struct strbuf buf = STRBUF_INIT;
1124        struct http_pack_request *preq;
1125
1126        preq = xcalloc(1, sizeof(*preq));
1127        preq->target = target;
1128
1129        end_url_with_slash(&buf, base_url);
1130        strbuf_addf(&buf, "objects/pack/pack-%s.pack",
1131                sha1_to_hex(target->sha1));
1132        preq->url = strbuf_detach(&buf, NULL);
1133
1134        snprintf(preq->tmpfile, sizeof(preq->tmpfile), "%s.temp",
1135                sha1_pack_name(target->sha1));
1136        preq->packfile = fopen(preq->tmpfile, "a");
1137        if (!preq->packfile) {
1138                error("Unable to open local file %s for pack",
1139                      preq->tmpfile);
1140                goto abort;
1141        }
1142
1143        preq->slot = get_active_slot();
1144        curl_easy_setopt(preq->slot->curl, CURLOPT_FILE, preq->packfile);
1145        curl_easy_setopt(preq->slot->curl, CURLOPT_WRITEFUNCTION, fwrite);
1146        curl_easy_setopt(preq->slot->curl, CURLOPT_URL, preq->url);
1147        curl_easy_setopt(preq->slot->curl, CURLOPT_HTTPHEADER,
1148                no_pragma_header);
1149
1150        /*
1151         * If there is data present from a previous transfer attempt,
1152         * resume where it left off
1153         */
1154        prev_posn = ftell(preq->packfile);
1155        if (prev_posn>0) {
1156                if (http_is_verbose)
1157                        fprintf(stderr,
1158                                "Resuming fetch of pack %s at byte %ld\n",
1159                                sha1_to_hex(target->sha1), prev_posn);
1160                sprintf(range, "Range: bytes=%ld-", prev_posn);
1161                preq->range_header = curl_slist_append(NULL, range);
1162                curl_easy_setopt(preq->slot->curl, CURLOPT_HTTPHEADER,
1163                        preq->range_header);
1164        }
1165
1166        return preq;
1167
1168abort:
1169        free(preq->url);
1170        free(preq);
1171        return NULL;
1172}
1173
1174/* Helpers for fetching objects (loose) */
1175static size_t fwrite_sha1_file(char *ptr, size_t eltsize, size_t nmemb,
1176                               void *data)
1177{
1178        unsigned char expn[4096];
1179        size_t size = eltsize * nmemb;
1180        int posn = 0;
1181        struct http_object_request *freq =
1182                (struct http_object_request *)data;
1183        do {
1184                ssize_t retval = xwrite(freq->localfile,
1185                                        (char *) ptr + posn, size - posn);
1186                if (retval < 0)
1187                        return posn;
1188                posn += retval;
1189        } while (posn < size);
1190
1191        freq->stream.avail_in = size;
1192        freq->stream.next_in = (void *)ptr;
1193        do {
1194                freq->stream.next_out = expn;
1195                freq->stream.avail_out = sizeof(expn);
1196                freq->zret = git_inflate(&freq->stream, Z_SYNC_FLUSH);
1197                git_SHA1_Update(&freq->c, expn,
1198                                sizeof(expn) - freq->stream.avail_out);
1199        } while (freq->stream.avail_in && freq->zret == Z_OK);
1200        return size;
1201}
1202
1203struct http_object_request *new_http_object_request(const char *base_url,
1204        unsigned char *sha1)
1205{
1206        char *hex = sha1_to_hex(sha1);
1207        char *filename;
1208        char prevfile[PATH_MAX];
1209        int prevlocal;
1210        char prev_buf[PREV_BUF_SIZE];
1211        ssize_t prev_read = 0;
1212        long prev_posn = 0;
1213        char range[RANGE_HEADER_SIZE];
1214        struct curl_slist *range_header = NULL;
1215        struct http_object_request *freq;
1216
1217        freq = xcalloc(1, sizeof(*freq));
1218        hashcpy(freq->sha1, sha1);
1219        freq->localfile = -1;
1220
1221        filename = sha1_file_name(sha1);
1222        snprintf(freq->tmpfile, sizeof(freq->tmpfile),
1223                 "%s.temp", filename);
1224
1225        snprintf(prevfile, sizeof(prevfile), "%s.prev", filename);
1226        unlink_or_warn(prevfile);
1227        rename(freq->tmpfile, prevfile);
1228        unlink_or_warn(freq->tmpfile);
1229
1230        if (freq->localfile != -1)
1231                error("fd leakage in start: %d", freq->localfile);
1232        freq->localfile = open(freq->tmpfile,
1233                               O_WRONLY | O_CREAT | O_EXCL, 0666);
1234        /*
1235         * This could have failed due to the "lazy directory creation";
1236         * try to mkdir the last path component.
1237         */
1238        if (freq->localfile < 0 && errno == ENOENT) {
1239                char *dir = strrchr(freq->tmpfile, '/');
1240                if (dir) {
1241                        *dir = 0;
1242                        mkdir(freq->tmpfile, 0777);
1243                        *dir = '/';
1244                }
1245                freq->localfile = open(freq->tmpfile,
1246                                       O_WRONLY | O_CREAT | O_EXCL, 0666);
1247        }
1248
1249        if (freq->localfile < 0) {
1250                error("Couldn't create temporary file %s: %s",
1251                      freq->tmpfile, strerror(errno));
1252                goto abort;
1253        }
1254
1255        git_inflate_init(&freq->stream);
1256
1257        git_SHA1_Init(&freq->c);
1258
1259        freq->url = get_remote_object_url(base_url, hex, 0);
1260
1261        /*
1262         * If a previous temp file is present, process what was already
1263         * fetched.
1264         */
1265        prevlocal = open(prevfile, O_RDONLY);
1266        if (prevlocal != -1) {
1267                do {
1268                        prev_read = xread(prevlocal, prev_buf, PREV_BUF_SIZE);
1269                        if (prev_read>0) {
1270                                if (fwrite_sha1_file(prev_buf,
1271                                                     1,
1272                                                     prev_read,
1273                                                     freq) == prev_read) {
1274                                        prev_posn += prev_read;
1275                                } else {
1276                                        prev_read = -1;
1277                                }
1278                        }
1279                } while (prev_read > 0);
1280                close(prevlocal);
1281        }
1282        unlink_or_warn(prevfile);
1283
1284        /*
1285         * Reset inflate/SHA1 if there was an error reading the previous temp
1286         * file; also rewind to the beginning of the local file.
1287         */
1288        if (prev_read == -1) {
1289                memset(&freq->stream, 0, sizeof(freq->stream));
1290                git_inflate_init(&freq->stream);
1291                git_SHA1_Init(&freq->c);
1292                if (prev_posn>0) {
1293                        prev_posn = 0;
1294                        lseek(freq->localfile, 0, SEEK_SET);
1295                        if (ftruncate(freq->localfile, 0) < 0) {
1296                                error("Couldn't truncate temporary file %s: %s",
1297                                          freq->tmpfile, strerror(errno));
1298                                goto abort;
1299                        }
1300                }
1301        }
1302
1303        freq->slot = get_active_slot();
1304
1305        curl_easy_setopt(freq->slot->curl, CURLOPT_FILE, freq);
1306        curl_easy_setopt(freq->slot->curl, CURLOPT_WRITEFUNCTION, fwrite_sha1_file);
1307        curl_easy_setopt(freq->slot->curl, CURLOPT_ERRORBUFFER, freq->errorstr);
1308        curl_easy_setopt(freq->slot->curl, CURLOPT_URL, freq->url);
1309        curl_easy_setopt(freq->slot->curl, CURLOPT_HTTPHEADER, no_pragma_header);
1310
1311        /*
1312         * If we have successfully processed data from a previous fetch
1313         * attempt, only fetch the data we don't already have.
1314         */
1315        if (prev_posn>0) {
1316                if (http_is_verbose)
1317                        fprintf(stderr,
1318                                "Resuming fetch of object %s at byte %ld\n",
1319                                hex, prev_posn);
1320                sprintf(range, "Range: bytes=%ld-", prev_posn);
1321                range_header = curl_slist_append(range_header, range);
1322                curl_easy_setopt(freq->slot->curl,
1323                                 CURLOPT_HTTPHEADER, range_header);
1324        }
1325
1326        return freq;
1327
1328abort:
1329        free(freq->url);
1330        free(freq);
1331        return NULL;
1332}
1333
1334void process_http_object_request(struct http_object_request *freq)
1335{
1336        if (freq->slot == NULL)
1337                return;
1338        freq->curl_result = freq->slot->curl_result;
1339        freq->http_code = freq->slot->http_code;
1340        freq->slot = NULL;
1341}
1342
1343int finish_http_object_request(struct http_object_request *freq)
1344{
1345        struct stat st;
1346
1347        close(freq->localfile);
1348        freq->localfile = -1;
1349
1350        process_http_object_request(freq);
1351
1352        if (freq->http_code == 416) {
1353                warning("requested range invalid; we may already have all the data.");
1354        } else if (freq->curl_result != CURLE_OK) {
1355                if (stat(freq->tmpfile, &st) == 0)
1356                        if (st.st_size == 0)
1357                                unlink_or_warn(freq->tmpfile);
1358                return -1;
1359        }
1360
1361        git_inflate_end(&freq->stream);
1362        git_SHA1_Final(freq->real_sha1, &freq->c);
1363        if (freq->zret != Z_STREAM_END) {
1364                unlink_or_warn(freq->tmpfile);
1365                return -1;
1366        }
1367        if (hashcmp(freq->sha1, freq->real_sha1)) {
1368                unlink_or_warn(freq->tmpfile);
1369                return -1;
1370        }
1371        freq->rename =
1372                move_temp_to_file(freq->tmpfile, sha1_file_name(freq->sha1));
1373
1374        return freq->rename;
1375}
1376
1377void abort_http_object_request(struct http_object_request *freq)
1378{
1379        unlink_or_warn(freq->tmpfile);
1380
1381        release_http_object_request(freq);
1382}
1383
1384void release_http_object_request(struct http_object_request *freq)
1385{
1386        if (freq->localfile != -1) {
1387                close(freq->localfile);
1388                freq->localfile = -1;
1389        }
1390        if (freq->url != NULL) {
1391                free(freq->url);
1392                freq->url = NULL;
1393        }
1394        if (freq->slot != NULL) {
1395                freq->slot->callback_func = NULL;
1396                freq->slot->callback_data = NULL;
1397                release_active_slot(freq->slot);
1398                freq->slot = NULL;
1399        }
1400}