Andrew's git / gitweb.git / http.c
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http.con commit completion: small optimization (ddc996d)
   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#include "pkt-line.h"
   9
  10int active_requests;
  11int http_is_verbose;
  12size_t http_post_buffer = 16 * LARGE_PACKET_MAX;
  13
  14#if LIBCURL_VERSION_NUM >= 0x070a06
  15#define LIBCURL_CAN_HANDLE_AUTH_ANY
  16#endif
  17
  18static int min_curl_sessions = 1;
  19static int curl_session_count;
  20#ifdef USE_CURL_MULTI
  21static int max_requests = -1;
  22static CURLM *curlm;
  23#endif
  24#ifndef NO_CURL_EASY_DUPHANDLE
  25static CURL *curl_default;
  26#endif
  27
  28#define PREV_BUF_SIZE 4096
  29#define RANGE_HEADER_SIZE 30
  30
  31char curl_errorstr[CURL_ERROR_SIZE];
  32
  33static int curl_ssl_verify = -1;
  34static const char *ssl_cert;
  35#if LIBCURL_VERSION_NUM >= 0x070903
  36static const char *ssl_key;
  37#endif
  38#if LIBCURL_VERSION_NUM >= 0x070908
  39static const char *ssl_capath;
  40#endif
  41static const char *ssl_cainfo;
  42static long curl_low_speed_limit = -1;
  43static long curl_low_speed_time = -1;
  44static int curl_ftp_no_epsv;
  45static const char *curl_http_proxy;
  46static const char *curl_cookie_file;
  47static struct credential http_auth = CREDENTIAL_INIT;
  48static int http_proactive_auth;
  49static const char *user_agent;
  50
  51#if LIBCURL_VERSION_NUM >= 0x071700
  52/* Use CURLOPT_KEYPASSWD as is */
  53#elif LIBCURL_VERSION_NUM >= 0x070903
  54#define CURLOPT_KEYPASSWD CURLOPT_SSLKEYPASSWD
  55#else
  56#define CURLOPT_KEYPASSWD CURLOPT_SSLCERTPASSWD
  57#endif
  58
  59static struct credential cert_auth = CREDENTIAL_INIT;
  60static int ssl_cert_password_required;
  61
  62static struct curl_slist *pragma_header;
  63static struct curl_slist *no_pragma_header;
  64
  65static struct active_request_slot *active_queue_head;
  66
  67size_t fread_buffer(char *ptr, size_t eltsize, size_t nmemb, void *buffer_)
  68{
  69        size_t size = eltsize * nmemb;
  70        struct buffer *buffer = buffer_;
  71
  72        if (size > buffer->buf.len - buffer->posn)
  73                size = buffer->buf.len - buffer->posn;
  74        memcpy(ptr, buffer->buf.buf + buffer->posn, size);
  75        buffer->posn += size;
  76
  77        return size;
  78}
  79
  80#ifndef NO_CURL_IOCTL
  81curlioerr ioctl_buffer(CURL *handle, int cmd, void *clientp)
  82{
  83        struct buffer *buffer = clientp;
  84
  85        switch (cmd) {
  86        case CURLIOCMD_NOP:
  87                return CURLIOE_OK;
  88
  89        case CURLIOCMD_RESTARTREAD:
  90                buffer->posn = 0;
  91                return CURLIOE_OK;
  92
  93        default:
  94                return CURLIOE_UNKNOWNCMD;
  95        }
  96}
  97#endif
  98
  99size_t fwrite_buffer(char *ptr, size_t eltsize, size_t nmemb, void *buffer_)
 100{
 101        size_t size = eltsize * nmemb;
 102        struct strbuf *buffer = buffer_;
 103
 104        strbuf_add(buffer, ptr, size);
 105        return size;
 106}
 107
 108size_t fwrite_null(char *ptr, size_t eltsize, size_t nmemb, void *strbuf)
 109{
 110        return eltsize * nmemb;
 111}
 112
 113#ifdef USE_CURL_MULTI
 114static void process_curl_messages(void)
 115{
 116        int num_messages;
 117        struct active_request_slot *slot;
 118        CURLMsg *curl_message = curl_multi_info_read(curlm, &num_messages);
 119
 120        while (curl_message != NULL) {
 121                if (curl_message->msg == CURLMSG_DONE) {
 122                        int curl_result = curl_message->data.result;
 123                        slot = active_queue_head;
 124                        while (slot != NULL &&
 125                               slot->curl != curl_message->easy_handle)
 126                                slot = slot->next;
 127                        if (slot != NULL) {
 128                                curl_multi_remove_handle(curlm, slot->curl);
 129                                slot->curl_result = curl_result;
 130                                finish_active_slot(slot);
 131                        } else {
 132                                fprintf(stderr, "Received DONE message for unknown request!\n");
 133                        }
 134                } else {
 135                        fprintf(stderr, "Unknown CURL message received: %d\n",
 136                                (int)curl_message->msg);
 137                }
 138                curl_message = curl_multi_info_read(curlm, &num_messages);
 139        }
 140}
 141#endif
 142
 143static int http_options(const char *var, const char *value, void *cb)
 144{
 145        if (!strcmp("http.sslverify", var)) {
 146                curl_ssl_verify = git_config_bool(var, value);
 147                return 0;
 148        }
 149        if (!strcmp("http.sslcert", var))
 150                return git_config_string(&ssl_cert, var, value);
 151#if LIBCURL_VERSION_NUM >= 0x070903
 152        if (!strcmp("http.sslkey", var))
 153                return git_config_string(&ssl_key, var, value);
 154#endif
 155#if LIBCURL_VERSION_NUM >= 0x070908
 156        if (!strcmp("http.sslcapath", var))
 157                return git_config_string(&ssl_capath, var, value);
 158#endif
 159        if (!strcmp("http.sslcainfo", var))
 160                return git_config_string(&ssl_cainfo, var, value);
 161        if (!strcmp("http.sslcertpasswordprotected", var)) {
 162                if (git_config_bool(var, value))
 163                        ssl_cert_password_required = 1;
 164                return 0;
 165        }
 166        if (!strcmp("http.minsessions", var)) {
 167                min_curl_sessions = git_config_int(var, value);
 168#ifndef USE_CURL_MULTI
 169                if (min_curl_sessions > 1)
 170                        min_curl_sessions = 1;
 171#endif
 172                return 0;
 173        }
 174#ifdef USE_CURL_MULTI
 175        if (!strcmp("http.maxrequests", var)) {
 176                max_requests = git_config_int(var, value);
 177                return 0;
 178        }
 179#endif
 180        if (!strcmp("http.lowspeedlimit", var)) {
 181                curl_low_speed_limit = (long)git_config_int(var, value);
 182                return 0;
 183        }
 184        if (!strcmp("http.lowspeedtime", var)) {
 185                curl_low_speed_time = (long)git_config_int(var, value);
 186                return 0;
 187        }
 188
 189        if (!strcmp("http.noepsv", var)) {
 190                curl_ftp_no_epsv = git_config_bool(var, value);
 191                return 0;
 192        }
 193        if (!strcmp("http.proxy", var))
 194                return git_config_string(&curl_http_proxy, var, value);
 195
 196        if (!strcmp("http.cookiefile", var))
 197                return git_config_string(&curl_cookie_file, var, value);
 198
 199        if (!strcmp("http.postbuffer", var)) {
 200                http_post_buffer = git_config_int(var, value);
 201                if (http_post_buffer < LARGE_PACKET_MAX)
 202                        http_post_buffer = LARGE_PACKET_MAX;
 203                return 0;
 204        }
 205
 206        if (!strcmp("http.useragent", var))
 207                return git_config_string(&user_agent, var, value);
 208
 209        /* Fall back on the default ones */
 210        return git_default_config(var, value, cb);
 211}
 212
 213static void init_curl_http_auth(CURL *result)
 214{
 215        if (!http_auth.username)
 216                return;
 217
 218        credential_fill(&http_auth);
 219
 220#if LIBCURL_VERSION_NUM >= 0x071301
 221        curl_easy_setopt(result, CURLOPT_USERNAME, http_auth.username);
 222        curl_easy_setopt(result, CURLOPT_PASSWORD, http_auth.password);
 223#else
 224        {
 225                static struct strbuf up = STRBUF_INIT;
 226                strbuf_reset(&up);
 227                strbuf_addf(&up, "%s:%s",
 228                            http_auth.username, http_auth.password);
 229                curl_easy_setopt(result, CURLOPT_USERPWD, up.buf);
 230        }
 231#endif
 232}
 233
 234static int has_cert_password(void)
 235{
 236        if (ssl_cert == NULL || ssl_cert_password_required != 1)
 237                return 0;
 238        if (!cert_auth.password) {
 239                cert_auth.protocol = xstrdup("cert");
 240                cert_auth.username = xstrdup("");
 241                cert_auth.path = xstrdup(ssl_cert);
 242                credential_fill(&cert_auth);
 243        }
 244        return 1;
 245}
 246
 247static CURL *get_curl_handle(void)
 248{
 249        CURL *result = curl_easy_init();
 250
 251        if (!curl_ssl_verify) {
 252                curl_easy_setopt(result, CURLOPT_SSL_VERIFYPEER, 0);
 253                curl_easy_setopt(result, CURLOPT_SSL_VERIFYHOST, 0);
 254        } else {
 255                /* Verify authenticity of the peer's certificate */
 256                curl_easy_setopt(result, CURLOPT_SSL_VERIFYPEER, 1);
 257                /* The name in the cert must match whom we tried to connect */
 258                curl_easy_setopt(result, CURLOPT_SSL_VERIFYHOST, 2);
 259        }
 260
 261#if LIBCURL_VERSION_NUM >= 0x070907
 262        curl_easy_setopt(result, CURLOPT_NETRC, CURL_NETRC_OPTIONAL);
 263#endif
 264#ifdef LIBCURL_CAN_HANDLE_AUTH_ANY
 265        curl_easy_setopt(result, CURLOPT_HTTPAUTH, CURLAUTH_ANY);
 266#endif
 267
 268        if (http_proactive_auth)
 269                init_curl_http_auth(result);
 270
 271        if (ssl_cert != NULL)
 272                curl_easy_setopt(result, CURLOPT_SSLCERT, ssl_cert);
 273        if (has_cert_password())
 274                curl_easy_setopt(result, CURLOPT_KEYPASSWD, cert_auth.password);
 275#if LIBCURL_VERSION_NUM >= 0x070903
 276        if (ssl_key != NULL)
 277                curl_easy_setopt(result, CURLOPT_SSLKEY, ssl_key);
 278#endif
 279#if LIBCURL_VERSION_NUM >= 0x070908
 280        if (ssl_capath != NULL)
 281                curl_easy_setopt(result, CURLOPT_CAPATH, ssl_capath);
 282#endif
 283        if (ssl_cainfo != NULL)
 284                curl_easy_setopt(result, CURLOPT_CAINFO, ssl_cainfo);
 285        curl_easy_setopt(result, CURLOPT_FAILONERROR, 1);
 286
 287        if (curl_low_speed_limit > 0 && curl_low_speed_time > 0) {
 288                curl_easy_setopt(result, CURLOPT_LOW_SPEED_LIMIT,
 289                                 curl_low_speed_limit);
 290                curl_easy_setopt(result, CURLOPT_LOW_SPEED_TIME,
 291                                 curl_low_speed_time);
 292        }
 293
 294        curl_easy_setopt(result, CURLOPT_FOLLOWLOCATION, 1);
 295#if LIBCURL_VERSION_NUM >= 0x071301
 296        curl_easy_setopt(result, CURLOPT_POSTREDIR, CURL_REDIR_POST_ALL);
 297#elif LIBCURL_VERSION_NUM >= 0x071101
 298        curl_easy_setopt(result, CURLOPT_POST301, 1);
 299#endif
 300
 301        if (getenv("GIT_CURL_VERBOSE"))
 302                curl_easy_setopt(result, CURLOPT_VERBOSE, 1);
 303
 304        curl_easy_setopt(result, CURLOPT_USERAGENT,
 305                user_agent ? user_agent : git_user_agent());
 306
 307        if (curl_ftp_no_epsv)
 308                curl_easy_setopt(result, CURLOPT_FTP_USE_EPSV, 0);
 309
 310        if (curl_http_proxy) {
 311                curl_easy_setopt(result, CURLOPT_PROXY, curl_http_proxy);
 312                curl_easy_setopt(result, CURLOPT_PROXYAUTH, CURLAUTH_ANY);
 313        }
 314
 315        return result;
 316}
 317
 318static void set_from_env(const char **var, const char *envname)
 319{
 320        const char *val = getenv(envname);
 321        if (val)
 322                *var = val;
 323}
 324
 325void http_init(struct remote *remote, const char *url, int proactive_auth)
 326{
 327        char *low_speed_limit;
 328        char *low_speed_time;
 329
 330        http_is_verbose = 0;
 331
 332        git_config(http_options, NULL);
 333
 334        curl_global_init(CURL_GLOBAL_ALL);
 335
 336        http_proactive_auth = proactive_auth;
 337
 338        if (remote && remote->http_proxy)
 339                curl_http_proxy = xstrdup(remote->http_proxy);
 340
 341        pragma_header = curl_slist_append(pragma_header, "Pragma: no-cache");
 342        no_pragma_header = curl_slist_append(no_pragma_header, "Pragma:");
 343
 344#ifdef USE_CURL_MULTI
 345        {
 346                char *http_max_requests = getenv("GIT_HTTP_MAX_REQUESTS");
 347                if (http_max_requests != NULL)
 348                        max_requests = atoi(http_max_requests);
 349        }
 350
 351        curlm = curl_multi_init();
 352        if (curlm == NULL) {
 353                fprintf(stderr, "Error creating curl multi handle.\n");
 354                exit(1);
 355        }
 356#endif
 357
 358        if (getenv("GIT_SSL_NO_VERIFY"))
 359                curl_ssl_verify = 0;
 360
 361        set_from_env(&ssl_cert, "GIT_SSL_CERT");
 362#if LIBCURL_VERSION_NUM >= 0x070903
 363        set_from_env(&ssl_key, "GIT_SSL_KEY");
 364#endif
 365#if LIBCURL_VERSION_NUM >= 0x070908
 366        set_from_env(&ssl_capath, "GIT_SSL_CAPATH");
 367#endif
 368        set_from_env(&ssl_cainfo, "GIT_SSL_CAINFO");
 369
 370        set_from_env(&user_agent, "GIT_HTTP_USER_AGENT");
 371
 372        low_speed_limit = getenv("GIT_HTTP_LOW_SPEED_LIMIT");
 373        if (low_speed_limit != NULL)
 374                curl_low_speed_limit = strtol(low_speed_limit, NULL, 10);
 375        low_speed_time = getenv("GIT_HTTP_LOW_SPEED_TIME");
 376        if (low_speed_time != NULL)
 377                curl_low_speed_time = strtol(low_speed_time, NULL, 10);
 378
 379        if (curl_ssl_verify == -1)
 380                curl_ssl_verify = 1;
 381
 382        curl_session_count = 0;
 383#ifdef USE_CURL_MULTI
 384        if (max_requests < 1)
 385                max_requests = DEFAULT_MAX_REQUESTS;
 386#endif
 387
 388        if (getenv("GIT_CURL_FTP_NO_EPSV"))
 389                curl_ftp_no_epsv = 1;
 390
 391        if (url) {
 392                credential_from_url(&http_auth, url);
 393                if (!ssl_cert_password_required &&
 394                    getenv("GIT_SSL_CERT_PASSWORD_PROTECTED") &&
 395                    !prefixcmp(url, "https://"))
 396                        ssl_cert_password_required = 1;
 397        }
 398
 399#ifndef NO_CURL_EASY_DUPHANDLE
 400        curl_default = get_curl_handle();
 401#endif
 402}
 403
 404void http_cleanup(void)
 405{
 406        struct active_request_slot *slot = active_queue_head;
 407
 408        while (slot != NULL) {
 409                struct active_request_slot *next = slot->next;
 410                if (slot->curl != NULL) {
 411#ifdef USE_CURL_MULTI
 412                        curl_multi_remove_handle(curlm, slot->curl);
 413#endif
 414                        curl_easy_cleanup(slot->curl);
 415                }
 416                free(slot);
 417                slot = next;
 418        }
 419        active_queue_head = NULL;
 420
 421#ifndef NO_CURL_EASY_DUPHANDLE
 422        curl_easy_cleanup(curl_default);
 423#endif
 424
 425#ifdef USE_CURL_MULTI
 426        curl_multi_cleanup(curlm);
 427#endif
 428        curl_global_cleanup();
 429
 430        curl_slist_free_all(pragma_header);
 431        pragma_header = NULL;
 432
 433        curl_slist_free_all(no_pragma_header);
 434        no_pragma_header = NULL;
 435
 436        if (curl_http_proxy) {
 437                free((void *)curl_http_proxy);
 438                curl_http_proxy = NULL;
 439        }
 440
 441        if (cert_auth.password != NULL) {
 442                memset(cert_auth.password, 0, strlen(cert_auth.password));
 443                free(cert_auth.password);
 444                cert_auth.password = NULL;
 445        }
 446        ssl_cert_password_required = 0;
 447}
 448
 449struct active_request_slot *get_active_slot(void)
 450{
 451        struct active_request_slot *slot = active_queue_head;
 452        struct active_request_slot *newslot;
 453
 454#ifdef USE_CURL_MULTI
 455        int num_transfers;
 456
 457        /* Wait for a slot to open up if the queue is full */
 458        while (active_requests >= max_requests) {
 459                curl_multi_perform(curlm, &num_transfers);
 460                if (num_transfers < active_requests)
 461                        process_curl_messages();
 462        }
 463#endif
 464
 465        while (slot != NULL && slot->in_use)
 466                slot = slot->next;
 467
 468        if (slot == NULL) {
 469                newslot = xmalloc(sizeof(*newslot));
 470                newslot->curl = NULL;
 471                newslot->in_use = 0;
 472                newslot->next = NULL;
 473
 474                slot = active_queue_head;
 475                if (slot == NULL) {
 476                        active_queue_head = newslot;
 477                } else {
 478                        while (slot->next != NULL)
 479                                slot = slot->next;
 480                        slot->next = newslot;
 481                }
 482                slot = newslot;
 483        }
 484
 485        if (slot->curl == NULL) {
 486#ifdef NO_CURL_EASY_DUPHANDLE
 487                slot->curl = get_curl_handle();
 488#else
 489                slot->curl = curl_easy_duphandle(curl_default);
 490#endif
 491                curl_session_count++;
 492        }
 493
 494        active_requests++;
 495        slot->in_use = 1;
 496        slot->results = NULL;
 497        slot->finished = NULL;
 498        slot->callback_data = NULL;
 499        slot->callback_func = NULL;
 500        curl_easy_setopt(slot->curl, CURLOPT_COOKIEFILE, curl_cookie_file);
 501        curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, pragma_header);
 502        curl_easy_setopt(slot->curl, CURLOPT_ERRORBUFFER, curl_errorstr);
 503        curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, NULL);
 504        curl_easy_setopt(slot->curl, CURLOPT_READFUNCTION, NULL);
 505        curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, NULL);
 506        curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDS, NULL);
 507        curl_easy_setopt(slot->curl, CURLOPT_UPLOAD, 0);
 508        curl_easy_setopt(slot->curl, CURLOPT_HTTPGET, 1);
 509        if (http_auth.password)
 510                init_curl_http_auth(slot->curl);
 511
 512        return slot;
 513}
 514
 515int start_active_slot(struct active_request_slot *slot)
 516{
 517#ifdef USE_CURL_MULTI
 518        CURLMcode curlm_result = curl_multi_add_handle(curlm, slot->curl);
 519        int num_transfers;
 520
 521        if (curlm_result != CURLM_OK &&
 522            curlm_result != CURLM_CALL_MULTI_PERFORM) {
 523                active_requests--;
 524                slot->in_use = 0;
 525                return 0;
 526        }
 527
 528        /*
 529         * We know there must be something to do, since we just added
 530         * something.
 531         */
 532        curl_multi_perform(curlm, &num_transfers);
 533#endif
 534        return 1;
 535}
 536
 537#ifdef USE_CURL_MULTI
 538struct fill_chain {
 539        void *data;
 540        int (*fill)(void *);
 541        struct fill_chain *next;
 542};
 543
 544static struct fill_chain *fill_cfg;
 545
 546void add_fill_function(void *data, int (*fill)(void *))
 547{
 548        struct fill_chain *new = xmalloc(sizeof(*new));
 549        struct fill_chain **linkp = &fill_cfg;
 550        new->data = data;
 551        new->fill = fill;
 552        new->next = NULL;
 553        while (*linkp)
 554                linkp = &(*linkp)->next;
 555        *linkp = new;
 556}
 557
 558void fill_active_slots(void)
 559{
 560        struct active_request_slot *slot = active_queue_head;
 561
 562        while (active_requests < max_requests) {
 563                struct fill_chain *fill;
 564                for (fill = fill_cfg; fill; fill = fill->next)
 565                        if (fill->fill(fill->data))
 566                                break;
 567
 568                if (!fill)
 569                        break;
 570        }
 571
 572        while (slot != NULL) {
 573                if (!slot->in_use && slot->curl != NULL
 574                        && curl_session_count > min_curl_sessions) {
 575                        curl_easy_cleanup(slot->curl);
 576                        slot->curl = NULL;
 577                        curl_session_count--;
 578                }
 579                slot = slot->next;
 580        }
 581}
 582
 583void step_active_slots(void)
 584{
 585        int num_transfers;
 586        CURLMcode curlm_result;
 587
 588        do {
 589                curlm_result = curl_multi_perform(curlm, &num_transfers);
 590        } while (curlm_result == CURLM_CALL_MULTI_PERFORM);
 591        if (num_transfers < active_requests) {
 592                process_curl_messages();
 593                fill_active_slots();
 594        }
 595}
 596#endif
 597
 598void run_active_slot(struct active_request_slot *slot)
 599{
 600#ifdef USE_CURL_MULTI
 601        fd_set readfds;
 602        fd_set writefds;
 603        fd_set excfds;
 604        int max_fd;
 605        struct timeval select_timeout;
 606        int finished = 0;
 607
 608        slot->finished = &finished;
 609        while (!finished) {
 610                step_active_slots();
 611
 612                if (slot->in_use) {
 613#if LIBCURL_VERSION_NUM >= 0x070f04
 614                        long curl_timeout;
 615                        curl_multi_timeout(curlm, &curl_timeout);
 616                        if (curl_timeout == 0) {
 617                                continue;
 618                        } else if (curl_timeout == -1) {
 619                                select_timeout.tv_sec  = 0;
 620                                select_timeout.tv_usec = 50000;
 621                        } else {
 622                                select_timeout.tv_sec  =  curl_timeout / 1000;
 623                                select_timeout.tv_usec = (curl_timeout % 1000) * 1000;
 624                        }
 625#else
 626                        select_timeout.tv_sec  = 0;
 627                        select_timeout.tv_usec = 50000;
 628#endif
 629
 630                        max_fd = -1;
 631                        FD_ZERO(&readfds);
 632                        FD_ZERO(&writefds);
 633                        FD_ZERO(&excfds);
 634                        curl_multi_fdset(curlm, &readfds, &writefds, &excfds, &max_fd);
 635
 636                        /*
 637                         * It can happen that curl_multi_timeout returns a pathologically
 638                         * long timeout when curl_multi_fdset returns no file descriptors
 639                         * to read.  See commit message for more details.
 640                         */
 641                        if (max_fd < 0 &&
 642                            (select_timeout.tv_sec > 0 ||
 643                             select_timeout.tv_usec > 50000)) {
 644                                select_timeout.tv_sec  = 0;
 645                                select_timeout.tv_usec = 50000;
 646                        }
 647
 648                        select(max_fd+1, &readfds, &writefds, &excfds, &select_timeout);
 649                }
 650        }
 651#else
 652        while (slot->in_use) {
 653                slot->curl_result = curl_easy_perform(slot->curl);
 654                finish_active_slot(slot);
 655        }
 656#endif
 657}
 658
 659static void closedown_active_slot(struct active_request_slot *slot)
 660{
 661        active_requests--;
 662        slot->in_use = 0;
 663}
 664
 665static void release_active_slot(struct active_request_slot *slot)
 666{
 667        closedown_active_slot(slot);
 668        if (slot->curl && curl_session_count > min_curl_sessions) {
 669#ifdef USE_CURL_MULTI
 670                curl_multi_remove_handle(curlm, slot->curl);
 671#endif
 672                curl_easy_cleanup(slot->curl);
 673                slot->curl = NULL;
 674                curl_session_count--;
 675        }
 676#ifdef USE_CURL_MULTI
 677        fill_active_slots();
 678#endif
 679}
 680
 681void finish_active_slot(struct active_request_slot *slot)
 682{
 683        closedown_active_slot(slot);
 684        curl_easy_getinfo(slot->curl, CURLINFO_HTTP_CODE, &slot->http_code);
 685
 686        if (slot->finished != NULL)
 687                (*slot->finished) = 1;
 688
 689        /* Store slot results so they can be read after the slot is reused */
 690        if (slot->results != NULL) {
 691                slot->results->curl_result = slot->curl_result;
 692                slot->results->http_code = slot->http_code;
 693        }
 694
 695        /* Run callback if appropriate */
 696        if (slot->callback_func != NULL)
 697                slot->callback_func(slot->callback_data);
 698}
 699
 700void finish_all_active_slots(void)
 701{
 702        struct active_request_slot *slot = active_queue_head;
 703
 704        while (slot != NULL)
 705                if (slot->in_use) {
 706                        run_active_slot(slot);
 707                        slot = active_queue_head;
 708                } else {
 709                        slot = slot->next;
 710                }
 711}
 712
 713/* Helpers for modifying and creating URLs */
 714static inline int needs_quote(int ch)
 715{
 716        if (((ch >= 'A') && (ch <= 'Z'))
 717                        || ((ch >= 'a') && (ch <= 'z'))
 718                        || ((ch >= '0') && (ch <= '9'))
 719                        || (ch == '/')
 720                        || (ch == '-')
 721                        || (ch == '.'))
 722                return 0;
 723        return 1;
 724}
 725
 726static char *quote_ref_url(const char *base, const char *ref)
 727{
 728        struct strbuf buf = STRBUF_INIT;
 729        const char *cp;
 730        int ch;
 731
 732        end_url_with_slash(&buf, base);
 733
 734        for (cp = ref; (ch = *cp) != 0; cp++)
 735                if (needs_quote(ch))
 736                        strbuf_addf(&buf, "%%%02x", ch);
 737                else
 738                        strbuf_addch(&buf, *cp);
 739
 740        return strbuf_detach(&buf, NULL);
 741}
 742
 743void append_remote_object_url(struct strbuf *buf, const char *url,
 744                              const char *hex,
 745                              int only_two_digit_prefix)
 746{
 747        end_url_with_slash(buf, url);
 748
 749        strbuf_addf(buf, "objects/%.*s/", 2, hex);
 750        if (!only_two_digit_prefix)
 751                strbuf_addf(buf, "%s", hex+2);
 752}
 753
 754char *get_remote_object_url(const char *url, const char *hex,
 755                            int only_two_digit_prefix)
 756{
 757        struct strbuf buf = STRBUF_INIT;
 758        append_remote_object_url(&buf, url, hex, only_two_digit_prefix);
 759        return strbuf_detach(&buf, NULL);
 760}
 761
 762int handle_curl_result(struct slot_results *results)
 763{
 764        if (results->curl_result == CURLE_OK) {
 765                credential_approve(&http_auth);
 766                return HTTP_OK;
 767        } else if (missing_target(results))
 768                return HTTP_MISSING_TARGET;
 769        else if (results->http_code == 401) {
 770                if (http_auth.username && http_auth.password) {
 771                        credential_reject(&http_auth);
 772                        return HTTP_NOAUTH;
 773                } else {
 774                        credential_fill(&http_auth);
 775                        return HTTP_REAUTH;
 776                }
 777        } else {
 778#if LIBCURL_VERSION_NUM >= 0x070c00
 779                if (!curl_errorstr[0])
 780                        strlcpy(curl_errorstr,
 781                                curl_easy_strerror(results->curl_result),
 782                                sizeof(curl_errorstr));
 783#endif
 784                return HTTP_ERROR;
 785        }
 786}
 787
 788/* http_request() targets */
 789#define HTTP_REQUEST_STRBUF     0
 790#define HTTP_REQUEST_FILE       1
 791
 792static int http_request(const char *url, struct strbuf *type,
 793                        void *result, int target, int options)
 794{
 795        struct active_request_slot *slot;
 796        struct slot_results results;
 797        struct curl_slist *headers = NULL;
 798        struct strbuf buf = STRBUF_INIT;
 799        int ret;
 800
 801        slot = get_active_slot();
 802        slot->results = &results;
 803        curl_easy_setopt(slot->curl, CURLOPT_HTTPGET, 1);
 804
 805        if (result == NULL) {
 806                curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 1);
 807        } else {
 808                curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 0);
 809                curl_easy_setopt(slot->curl, CURLOPT_FILE, result);
 810
 811                if (target == HTTP_REQUEST_FILE) {
 812                        long posn = ftell(result);
 813                        curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION,
 814                                         fwrite);
 815                        if (posn > 0) {
 816                                strbuf_addf(&buf, "Range: bytes=%ld-", posn);
 817                                headers = curl_slist_append(headers, buf.buf);
 818                                strbuf_reset(&buf);
 819                        }
 820                } else
 821                        curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION,
 822                                         fwrite_buffer);
 823        }
 824
 825        strbuf_addstr(&buf, "Pragma:");
 826        if (options & HTTP_NO_CACHE)
 827                strbuf_addstr(&buf, " no-cache");
 828
 829        headers = curl_slist_append(headers, buf.buf);
 830
 831        curl_easy_setopt(slot->curl, CURLOPT_URL, url);
 832        curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, headers);
 833        curl_easy_setopt(slot->curl, CURLOPT_ENCODING, "gzip");
 834
 835        if (start_active_slot(slot)) {
 836                run_active_slot(slot);
 837                ret = handle_curl_result(&results);
 838        } else {
 839                error("Unable to start HTTP request for %s", url);
 840                ret = HTTP_START_FAILED;
 841        }
 842
 843        if (type) {
 844                char *t;
 845                strbuf_reset(type);
 846                curl_easy_getinfo(slot->curl, CURLINFO_CONTENT_TYPE, &t);
 847                if (t)
 848                        strbuf_addstr(type, t);
 849        }
 850
 851        curl_slist_free_all(headers);
 852        strbuf_release(&buf);
 853
 854        return ret;
 855}
 856
 857static int http_request_reauth(const char *url,
 858                               struct strbuf *type,
 859                               void *result, int target,
 860                               int options)
 861{
 862        int ret = http_request(url, type, result, target, options);
 863        if (ret != HTTP_REAUTH)
 864                return ret;
 865        return http_request(url, type, result, target, options);
 866}
 867
 868int http_get_strbuf(const char *url,
 869                    struct strbuf *type,
 870                    struct strbuf *result, int options)
 871{
 872        return http_request_reauth(url, type, result,
 873                                   HTTP_REQUEST_STRBUF, options);
 874}
 875
 876/*
 877 * Downloads a URL and stores the result in the given file.
 878 *
 879 * If a previous interrupted download is detected (i.e. a previous temporary
 880 * file is still around) the download is resumed.
 881 */
 882static int http_get_file(const char *url, const char *filename, int options)
 883{
 884        int ret;
 885        struct strbuf tmpfile = STRBUF_INIT;
 886        FILE *result;
 887
 888        strbuf_addf(&tmpfile, "%s.temp", filename);
 889        result = fopen(tmpfile.buf, "a");
 890        if (! result) {
 891                error("Unable to open local file %s", tmpfile.buf);
 892                ret = HTTP_ERROR;
 893                goto cleanup;
 894        }
 895
 896        ret = http_request_reauth(url, NULL, result, HTTP_REQUEST_FILE, options);
 897        fclose(result);
 898
 899        if ((ret == HTTP_OK) && move_temp_to_file(tmpfile.buf, filename))
 900                ret = HTTP_ERROR;
 901cleanup:
 902        strbuf_release(&tmpfile);
 903        return ret;
 904}
 905
 906int http_error(const char *url, int ret)
 907{
 908        /* http_request has already handled HTTP_START_FAILED. */
 909        if (ret != HTTP_START_FAILED)
 910                error("%s while accessing %s", curl_errorstr, url);
 911
 912        return ret;
 913}
 914
 915int http_fetch_ref(const char *base, struct ref *ref)
 916{
 917        char *url;
 918        struct strbuf buffer = STRBUF_INIT;
 919        int ret = -1;
 920
 921        url = quote_ref_url(base, ref->name);
 922        if (http_get_strbuf(url, NULL, &buffer, HTTP_NO_CACHE) == HTTP_OK) {
 923                strbuf_rtrim(&buffer);
 924                if (buffer.len == 40)
 925                        ret = get_sha1_hex(buffer.buf, ref->old_sha1);
 926                else if (!prefixcmp(buffer.buf, "ref: ")) {
 927                        ref->symref = xstrdup(buffer.buf + 5);
 928                        ret = 0;
 929                }
 930        }
 931
 932        strbuf_release(&buffer);
 933        free(url);
 934        return ret;
 935}
 936
 937/* Helpers for fetching packs */
 938static char *fetch_pack_index(unsigned char *sha1, const char *base_url)
 939{
 940        char *url, *tmp;
 941        struct strbuf buf = STRBUF_INIT;
 942
 943        if (http_is_verbose)
 944                fprintf(stderr, "Getting index for pack %s\n", sha1_to_hex(sha1));
 945
 946        end_url_with_slash(&buf, base_url);
 947        strbuf_addf(&buf, "objects/pack/pack-%s.idx", sha1_to_hex(sha1));
 948        url = strbuf_detach(&buf, NULL);
 949
 950        strbuf_addf(&buf, "%s.temp", sha1_pack_index_name(sha1));
 951        tmp = strbuf_detach(&buf, NULL);
 952
 953        if (http_get_file(url, tmp, 0) != HTTP_OK) {
 954                error("Unable to get pack index %s", url);
 955                free(tmp);
 956                tmp = NULL;
 957        }
 958
 959        free(url);
 960        return tmp;
 961}
 962
 963static int fetch_and_setup_pack_index(struct packed_git **packs_head,
 964        unsigned char *sha1, const char *base_url)
 965{
 966        struct packed_git *new_pack;
 967        char *tmp_idx = NULL;
 968        int ret;
 969
 970        if (has_pack_index(sha1)) {
 971                new_pack = parse_pack_index(sha1, NULL);
 972                if (!new_pack)
 973                        return -1; /* parse_pack_index() already issued error message */
 974                goto add_pack;
 975        }
 976
 977        tmp_idx = fetch_pack_index(sha1, base_url);
 978        if (!tmp_idx)
 979                return -1;
 980
 981        new_pack = parse_pack_index(sha1, tmp_idx);
 982        if (!new_pack) {
 983                unlink(tmp_idx);
 984                free(tmp_idx);
 985
 986                return -1; /* parse_pack_index() already issued error message */
 987        }
 988
 989        ret = verify_pack_index(new_pack);
 990        if (!ret) {
 991                close_pack_index(new_pack);
 992                ret = move_temp_to_file(tmp_idx, sha1_pack_index_name(sha1));
 993        }
 994        free(tmp_idx);
 995        if (ret)
 996                return -1;
 997
 998add_pack:
 999        new_pack->next = *packs_head;
1000        *packs_head = new_pack;
1001        return 0;
1002}
1003
1004int http_get_info_packs(const char *base_url, struct packed_git **packs_head)
1005{
1006        int ret = 0, i = 0;
1007        char *url, *data;
1008        struct strbuf buf = STRBUF_INIT;
1009        unsigned char sha1[20];
1010
1011        end_url_with_slash(&buf, base_url);
1012        strbuf_addstr(&buf, "objects/info/packs");
1013        url = strbuf_detach(&buf, NULL);
1014
1015        ret = http_get_strbuf(url, NULL, &buf, HTTP_NO_CACHE);
1016        if (ret != HTTP_OK)
1017                goto cleanup;
1018
1019        data = buf.buf;
1020        while (i < buf.len) {
1021                switch (data[i]) {
1022                case 'P':
1023                        i++;
1024                        if (i + 52 <= buf.len &&
1025                            !prefixcmp(data + i, " pack-") &&
1026                            !prefixcmp(data + i + 46, ".pack\n")) {
1027                                get_sha1_hex(data + i + 6, sha1);
1028                                fetch_and_setup_pack_index(packs_head, sha1,
1029                                                      base_url);
1030                                i += 51;
1031                                break;
1032                        }
1033                default:
1034                        while (i < buf.len && data[i] != '\n')
1035                                i++;
1036                }
1037                i++;
1038        }
1039
1040cleanup:
1041        free(url);
1042        return ret;
1043}
1044
1045void release_http_pack_request(struct http_pack_request *preq)
1046{
1047        if (preq->packfile != NULL) {
1048                fclose(preq->packfile);
1049                preq->packfile = NULL;
1050        }
1051        if (preq->range_header != NULL) {
1052                curl_slist_free_all(preq->range_header);
1053                preq->range_header = NULL;
1054        }
1055        preq->slot = NULL;
1056        free(preq->url);
1057}
1058
1059int finish_http_pack_request(struct http_pack_request *preq)
1060{
1061        struct packed_git **lst;
1062        struct packed_git *p = preq->target;
1063        char *tmp_idx;
1064        struct child_process ip;
1065        const char *ip_argv[8];
1066
1067        close_pack_index(p);
1068
1069        fclose(preq->packfile);
1070        preq->packfile = NULL;
1071
1072        lst = preq->lst;
1073        while (*lst != p)
1074                lst = &((*lst)->next);
1075        *lst = (*lst)->next;
1076
1077        tmp_idx = xstrdup(preq->tmpfile);
1078        strcpy(tmp_idx + strlen(tmp_idx) - strlen(".pack.temp"),
1079               ".idx.temp");
1080
1081        ip_argv[0] = "index-pack";
1082        ip_argv[1] = "-o";
1083        ip_argv[2] = tmp_idx;
1084        ip_argv[3] = preq->tmpfile;
1085        ip_argv[4] = NULL;
1086
1087        memset(&ip, 0, sizeof(ip));
1088        ip.argv = ip_argv;
1089        ip.git_cmd = 1;
1090        ip.no_stdin = 1;
1091        ip.no_stdout = 1;
1092
1093        if (run_command(&ip)) {
1094                unlink(preq->tmpfile);
1095                unlink(tmp_idx);
1096                free(tmp_idx);
1097                return -1;
1098        }
1099
1100        unlink(sha1_pack_index_name(p->sha1));
1101
1102        if (move_temp_to_file(preq->tmpfile, sha1_pack_name(p->sha1))
1103         || move_temp_to_file(tmp_idx, sha1_pack_index_name(p->sha1))) {
1104                free(tmp_idx);
1105                return -1;
1106        }
1107
1108        install_packed_git(p);
1109        free(tmp_idx);
1110        return 0;
1111}
1112
1113struct http_pack_request *new_http_pack_request(
1114        struct packed_git *target, const char *base_url)
1115{
1116        long prev_posn = 0;
1117        char range[RANGE_HEADER_SIZE];
1118        struct strbuf buf = STRBUF_INIT;
1119        struct http_pack_request *preq;
1120
1121        preq = xcalloc(1, sizeof(*preq));
1122        preq->target = target;
1123
1124        end_url_with_slash(&buf, base_url);
1125        strbuf_addf(&buf, "objects/pack/pack-%s.pack",
1126                sha1_to_hex(target->sha1));
1127        preq->url = strbuf_detach(&buf, NULL);
1128
1129        snprintf(preq->tmpfile, sizeof(preq->tmpfile), "%s.temp",
1130                sha1_pack_name(target->sha1));
1131        preq->packfile = fopen(preq->tmpfile, "a");
1132        if (!preq->packfile) {
1133                error("Unable to open local file %s for pack",
1134                      preq->tmpfile);
1135                goto abort;
1136        }
1137
1138        preq->slot = get_active_slot();
1139        curl_easy_setopt(preq->slot->curl, CURLOPT_FILE, preq->packfile);
1140        curl_easy_setopt(preq->slot->curl, CURLOPT_WRITEFUNCTION, fwrite);
1141        curl_easy_setopt(preq->slot->curl, CURLOPT_URL, preq->url);
1142        curl_easy_setopt(preq->slot->curl, CURLOPT_HTTPHEADER,
1143                no_pragma_header);
1144
1145        /*
1146         * If there is data present from a previous transfer attempt,
1147         * resume where it left off
1148         */
1149        prev_posn = ftell(preq->packfile);
1150        if (prev_posn>0) {
1151                if (http_is_verbose)
1152                        fprintf(stderr,
1153                                "Resuming fetch of pack %s at byte %ld\n",
1154                                sha1_to_hex(target->sha1), prev_posn);
1155                sprintf(range, "Range: bytes=%ld-", prev_posn);
1156                preq->range_header = curl_slist_append(NULL, range);
1157                curl_easy_setopt(preq->slot->curl, CURLOPT_HTTPHEADER,
1158                        preq->range_header);
1159        }
1160
1161        return preq;
1162
1163abort:
1164        free(preq->url);
1165        free(preq);
1166        return NULL;
1167}
1168
1169/* Helpers for fetching objects (loose) */
1170static size_t fwrite_sha1_file(char *ptr, size_t eltsize, size_t nmemb,
1171                               void *data)
1172{
1173        unsigned char expn[4096];
1174        size_t size = eltsize * nmemb;
1175        int posn = 0;
1176        struct http_object_request *freq =
1177                (struct http_object_request *)data;
1178        do {
1179                ssize_t retval = xwrite(freq->localfile,
1180                                        (char *) ptr + posn, size - posn);
1181                if (retval < 0)
1182                        return posn;
1183                posn += retval;
1184        } while (posn < size);
1185
1186        freq->stream.avail_in = size;
1187        freq->stream.next_in = (void *)ptr;
1188        do {
1189                freq->stream.next_out = expn;
1190                freq->stream.avail_out = sizeof(expn);
1191                freq->zret = git_inflate(&freq->stream, Z_SYNC_FLUSH);
1192                git_SHA1_Update(&freq->c, expn,
1193                                sizeof(expn) - freq->stream.avail_out);
1194        } while (freq->stream.avail_in && freq->zret == Z_OK);
1195        return size;
1196}
1197
1198struct http_object_request *new_http_object_request(const char *base_url,
1199        unsigned char *sha1)
1200{
1201        char *hex = sha1_to_hex(sha1);
1202        char *filename;
1203        char prevfile[PATH_MAX];
1204        int prevlocal;
1205        char prev_buf[PREV_BUF_SIZE];
1206        ssize_t prev_read = 0;
1207        long prev_posn = 0;
1208        char range[RANGE_HEADER_SIZE];
1209        struct curl_slist *range_header = NULL;
1210        struct http_object_request *freq;
1211
1212        freq = xcalloc(1, sizeof(*freq));
1213        hashcpy(freq->sha1, sha1);
1214        freq->localfile = -1;
1215
1216        filename = sha1_file_name(sha1);
1217        snprintf(freq->tmpfile, sizeof(freq->tmpfile),
1218                 "%s.temp", filename);
1219
1220        snprintf(prevfile, sizeof(prevfile), "%s.prev", filename);
1221        unlink_or_warn(prevfile);
1222        rename(freq->tmpfile, prevfile);
1223        unlink_or_warn(freq->tmpfile);
1224
1225        if (freq->localfile != -1)
1226                error("fd leakage in start: %d", freq->localfile);
1227        freq->localfile = open(freq->tmpfile,
1228                               O_WRONLY | O_CREAT | O_EXCL, 0666);
1229        /*
1230         * This could have failed due to the "lazy directory creation";
1231         * try to mkdir the last path component.
1232         */
1233        if (freq->localfile < 0 && errno == ENOENT) {
1234                char *dir = strrchr(freq->tmpfile, '/');
1235                if (dir) {
1236                        *dir = 0;
1237                        mkdir(freq->tmpfile, 0777);
1238                        *dir = '/';
1239                }
1240                freq->localfile = open(freq->tmpfile,
1241                                       O_WRONLY | O_CREAT | O_EXCL, 0666);
1242        }
1243
1244        if (freq->localfile < 0) {
1245                error("Couldn't create temporary file %s: %s",
1246                      freq->tmpfile, strerror(errno));
1247                goto abort;
1248        }
1249
1250        git_inflate_init(&freq->stream);
1251
1252        git_SHA1_Init(&freq->c);
1253
1254        freq->url = get_remote_object_url(base_url, hex, 0);
1255
1256        /*
1257         * If a previous temp file is present, process what was already
1258         * fetched.
1259         */
1260        prevlocal = open(prevfile, O_RDONLY);
1261        if (prevlocal != -1) {
1262                do {
1263                        prev_read = xread(prevlocal, prev_buf, PREV_BUF_SIZE);
1264                        if (prev_read>0) {
1265                                if (fwrite_sha1_file(prev_buf,
1266                                                     1,
1267                                                     prev_read,
1268                                                     freq) == prev_read) {
1269                                        prev_posn += prev_read;
1270                                } else {
1271                                        prev_read = -1;
1272                                }
1273                        }
1274                } while (prev_read > 0);
1275                close(prevlocal);
1276        }
1277        unlink_or_warn(prevfile);
1278
1279        /*
1280         * Reset inflate/SHA1 if there was an error reading the previous temp
1281         * file; also rewind to the beginning of the local file.
1282         */
1283        if (prev_read == -1) {
1284                memset(&freq->stream, 0, sizeof(freq->stream));
1285                git_inflate_init(&freq->stream);
1286                git_SHA1_Init(&freq->c);
1287                if (prev_posn>0) {
1288                        prev_posn = 0;
1289                        lseek(freq->localfile, 0, SEEK_SET);
1290                        if (ftruncate(freq->localfile, 0) < 0) {
1291                                error("Couldn't truncate temporary file %s: %s",
1292                                          freq->tmpfile, strerror(errno));
1293                                goto abort;
1294                        }
1295                }
1296        }
1297
1298        freq->slot = get_active_slot();
1299
1300        curl_easy_setopt(freq->slot->curl, CURLOPT_FILE, freq);
1301        curl_easy_setopt(freq->slot->curl, CURLOPT_WRITEFUNCTION, fwrite_sha1_file);
1302        curl_easy_setopt(freq->slot->curl, CURLOPT_ERRORBUFFER, freq->errorstr);
1303        curl_easy_setopt(freq->slot->curl, CURLOPT_URL, freq->url);
1304        curl_easy_setopt(freq->slot->curl, CURLOPT_HTTPHEADER, no_pragma_header);
1305
1306        /*
1307         * If we have successfully processed data from a previous fetch
1308         * attempt, only fetch the data we don't already have.
1309         */
1310        if (prev_posn>0) {
1311                if (http_is_verbose)
1312                        fprintf(stderr,
1313                                "Resuming fetch of object %s at byte %ld\n",
1314                                hex, prev_posn);
1315                sprintf(range, "Range: bytes=%ld-", prev_posn);
1316                range_header = curl_slist_append(range_header, range);
1317                curl_easy_setopt(freq->slot->curl,
1318                                 CURLOPT_HTTPHEADER, range_header);
1319        }
1320
1321        return freq;
1322
1323abort:
1324        free(freq->url);
1325        free(freq);
1326        return NULL;
1327}
1328
1329void process_http_object_request(struct http_object_request *freq)
1330{
1331        if (freq->slot == NULL)
1332                return;
1333        freq->curl_result = freq->slot->curl_result;
1334        freq->http_code = freq->slot->http_code;
1335        freq->slot = NULL;
1336}
1337
1338int finish_http_object_request(struct http_object_request *freq)
1339{
1340        struct stat st;
1341
1342        close(freq->localfile);
1343        freq->localfile = -1;
1344
1345        process_http_object_request(freq);
1346
1347        if (freq->http_code == 416) {
1348                warning("requested range invalid; we may already have all the data.");
1349        } else if (freq->curl_result != CURLE_OK) {
1350                if (stat(freq->tmpfile, &st) == 0)
1351                        if (st.st_size == 0)
1352                                unlink_or_warn(freq->tmpfile);
1353                return -1;
1354        }
1355
1356        git_inflate_end(&freq->stream);
1357        git_SHA1_Final(freq->real_sha1, &freq->c);
1358        if (freq->zret != Z_STREAM_END) {
1359                unlink_or_warn(freq->tmpfile);
1360                return -1;
1361        }
1362        if (hashcmp(freq->sha1, freq->real_sha1)) {
1363                unlink_or_warn(freq->tmpfile);
1364                return -1;
1365        }
1366        freq->rename =
1367                move_temp_to_file(freq->tmpfile, sha1_file_name(freq->sha1));
1368
1369        return freq->rename;
1370}
1371
1372void abort_http_object_request(struct http_object_request *freq)
1373{
1374        unlink_or_warn(freq->tmpfile);
1375
1376        release_http_object_request(freq);
1377}
1378
1379void release_http_object_request(struct http_object_request *freq)
1380{
1381        if (freq->localfile != -1) {
1382                close(freq->localfile);
1383                freq->localfile = -1;
1384        }
1385        if (freq->url != NULL) {
1386                free(freq->url);
1387                freq->url = NULL;
1388        }
1389        if (freq->slot != NULL) {
1390                freq->slot->callback_func = NULL;
1391                freq->slot->callback_data = NULL;
1392                release_active_slot(freq->slot);
1393                freq->slot = NULL;
1394        }
1395}