git.oblomov.eu Git - git/blob - http-push.c

   1 #include "cache.h"
   2 #include "commit.h"
   3 #include "tag.h"
   4 #include "blob.h"
   5 #include "http.h"
   6 #include "refs.h"
   7 #include "diff.h"
   8 #include "revision.h"
   9 #include "exec_cmd.h"
  10 #include "remote.h"
  11 #include "list-objects.h"
  12 #include "sigchain.h"
  13
  14 #ifdef EXPAT_NEEDS_XMLPARSE_H
  15 #include <xmlparse.h>
  16 #else
  17 #include <expat.h>
  18 #endif
  19
  20 static const char http_push_usage[] =
  21 "git http-push [--all] [--dry-run] [--force] [--verbose] <remote> [<head>...]\n";
  22
  23 #ifndef XML_STATUS_OK
  24 enum XML_Status {
  25   XML_STATUS_OK = 1,
  26   XML_STATUS_ERROR = 0
  27 };
  28 #define XML_STATUS_OK    1
  29 #define XML_STATUS_ERROR 0
  30 #endif
  31
  32 #define PREV_BUF_SIZE 4096
  33
  34 /* DAV methods */
  35 #define DAV_LOCK "LOCK"
  36 #define DAV_MKCOL "MKCOL"
  37 #define DAV_MOVE "MOVE"
  38 #define DAV_PROPFIND "PROPFIND"
  39 #define DAV_PUT "PUT"
  40 #define DAV_UNLOCK "UNLOCK"
  41 #define DAV_DELETE "DELETE"
  42
  43 /* DAV lock flags */
  44 #define DAV_PROP_LOCKWR (1u << 0)
  45 #define DAV_PROP_LOCKEX (1u << 1)
  46 #define DAV_LOCK_OK (1u << 2)
  47
  48 /* DAV XML properties */
  49 #define DAV_CTX_LOCKENTRY ".multistatus.response.propstat.prop.supportedlock.lockentry"
  50 #define DAV_CTX_LOCKTYPE_WRITE ".multistatus.response.propstat.prop.supportedlock.lockentry.locktype.write"
  51 #define DAV_CTX_LOCKTYPE_EXCLUSIVE ".multistatus.response.propstat.prop.supportedlock.lockentry.lockscope.exclusive"
  52 #define DAV_ACTIVELOCK_OWNER ".prop.lockdiscovery.activelock.owner.href"
  53 #define DAV_ACTIVELOCK_TIMEOUT ".prop.lockdiscovery.activelock.timeout"
  54 #define DAV_ACTIVELOCK_TOKEN ".prop.lockdiscovery.activelock.locktoken.href"
  55 #define DAV_PROPFIND_RESP ".multistatus.response"
  56 #define DAV_PROPFIND_NAME ".multistatus.response.href"
  57 #define DAV_PROPFIND_COLLECTION ".multistatus.response.propstat.prop.resourcetype.collection"
  58
  59 /* DAV request body templates */
  60 #define PROPFIND_SUPPORTEDLOCK_REQUEST "<?xml version=\"1.0\" encoding=\"utf-8\" ?>\n<D:propfind xmlns:D=\"DAV:\">\n<D:prop xmlns:R=\"%s\">\n<D:supportedlock/>\n</D:prop>\n</D:propfind>"
  61 #define PROPFIND_ALL_REQUEST "<?xml version=\"1.0\" encoding=\"utf-8\" ?>\n<D:propfind xmlns:D=\"DAV:\">\n<D:allprop/>\n</D:propfind>"
  62 #define LOCK_REQUEST "<?xml version=\"1.0\" encoding=\"utf-8\" ?>\n<D:lockinfo xmlns:D=\"DAV:\">\n<D:lockscope><D:exclusive/></D:lockscope>\n<D:locktype><D:write/></D:locktype>\n<D:owner>\n<D:href>mailto:%s</D:href>\n</D:owner>\n</D:lockinfo>"
  63
  64 #define LOCK_TIME 600
  65 #define LOCK_REFRESH 30
  66
  67 /* bits #0-15 in revision.h */
  68
  69 #define LOCAL    (1u<<16)
  70 #define REMOTE   (1u<<17)
  71 #define FETCHING (1u<<18)
  72 #define PUSHING  (1u<<19)
  73
  74 /* We allow "recursive" symbolic refs. Only within reason, though */
  75 #define MAXDEPTH 5
  76
  77 static int pushing;
  78 static int aborted;
  79 static signed char remote_dir_exists[256];
  80
  81 static int push_verbosely;
  82 static int push_all = MATCH_REFS_NONE;
  83 static int force_all;
  84 static int dry_run;
  85 static int helper_status;
  86
  87 static struct object_list *objects;
  88
  89 struct repo {
  90         char *url;
  91         char *path;
  92         int path_len;
  93         int has_info_refs;
  94         int can_update_info_refs;
  95         int has_info_packs;
  96         struct packed_git *packs;
  97         struct remote_lock *locks;
  98 };
  99
 100 static struct repo *repo;
 101
 102 enum transfer_state {
 103         NEED_FETCH,
 104         RUN_FETCH_LOOSE,
 105         RUN_FETCH_PACKED,
 106         NEED_PUSH,
 107         RUN_MKCOL,
 108         RUN_PUT,
 109         RUN_MOVE,
 110         ABORTED,
 111         COMPLETE
 112 };
 113
 114 struct transfer_request {
 115         struct object *obj;
 116         char *url;
 117         char *dest;
 118         struct remote_lock *lock;
 119         struct curl_slist *headers;
 120         struct buffer buffer;
 121         enum transfer_state state;
 122         CURLcode curl_result;
 123         char errorstr[CURL_ERROR_SIZE];
 124         long http_code;
 125         void *userData;
 126         struct active_request_slot *slot;
 127         struct transfer_request *next;
 128 };
 129
 130 static struct transfer_request *request_queue_head;
 131
 132 struct xml_ctx {
 133         char *name;
 134         int len;
 135         char *cdata;
 136         void (*userFunc)(struct xml_ctx *ctx, int tag_closed);
 137         void *userData;
 138 };
 139
 140 struct remote_lock {
 141         char *url;
 142         char *owner;
 143         char *token;
 144         char tmpfile_suffix[41];
 145         time_t start_time;
 146         long timeout;
 147         int refreshing;
 148         struct remote_lock *next;
 149 };
 150
 151 /* Flags that control remote_ls processing */
 152 #define PROCESS_FILES (1u << 0)
 153 #define PROCESS_DIRS  (1u << 1)
 154 #define RECURSIVE     (1u << 2)
 155
 156 /* Flags that remote_ls passes to callback functions */
 157 #define IS_DIR (1u << 0)
 158
 159 struct remote_ls_ctx {
 160         char *path;
 161         void (*userFunc)(struct remote_ls_ctx *ls);
 162         void *userData;
 163         int flags;
 164         char *dentry_name;
 165         int dentry_flags;
 166         struct remote_ls_ctx *parent;
 167 };
 168
 169 /* get_dav_token_headers options */
 170 enum dav_header_flag {
 171         DAV_HEADER_IF = (1u << 0),
 172         DAV_HEADER_LOCK = (1u << 1),
 173         DAV_HEADER_TIMEOUT = (1u << 2)
 174 };
 175
 176 static char *xml_entities(const char *s)
 177 {
 178         struct strbuf buf = STRBUF_INIT;
 179         strbuf_addstr_xml_quoted(&buf, s);
 180         return strbuf_detach(&buf, NULL);
 181 }
 182
 183 static void curl_setup_http_get(CURL *curl, const char *url,
 184                 const char *custom_req)
 185 {
 186         curl_easy_setopt(curl, CURLOPT_HTTPGET, 1);
 187         curl_easy_setopt(curl, CURLOPT_URL, url);
 188         curl_easy_setopt(curl, CURLOPT_CUSTOMREQUEST, custom_req);
 189         curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, fwrite_null);
 190 }
 191
 192 static void curl_setup_http(CURL *curl, const char *url,
 193                 const char *custom_req, struct buffer *buffer,
 194                 curl_write_callback write_fn)
 195 {
 196         curl_easy_setopt(curl, CURLOPT_PUT, 1);
 197         curl_easy_setopt(curl, CURLOPT_URL, url);
 198         curl_easy_setopt(curl, CURLOPT_INFILE, buffer);
 199         curl_easy_setopt(curl, CURLOPT_INFILESIZE, buffer->buf.len);
 200         curl_easy_setopt(curl, CURLOPT_READFUNCTION, fread_buffer);
 201 #ifndef NO_CURL_IOCTL
 202         curl_easy_setopt(curl, CURLOPT_IOCTLFUNCTION, ioctl_buffer);
 203         curl_easy_setopt(curl, CURLOPT_IOCTLDATA, &buffer);
 204 #endif
 205         curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, write_fn);
 206         curl_easy_setopt(curl, CURLOPT_NOBODY, 0);
 207         curl_easy_setopt(curl, CURLOPT_CUSTOMREQUEST, custom_req);
 208         curl_easy_setopt(curl, CURLOPT_UPLOAD, 1);
 209 }
 210
 211 static struct curl_slist *get_dav_token_headers(struct remote_lock *lock, enum dav_header_flag options)
 212 {
 213         struct strbuf buf = STRBUF_INIT;
 214         struct curl_slist *dav_headers = NULL;
 215
 216         if (options & DAV_HEADER_IF) {
 217                 strbuf_addf(&buf, "If: (<%s>)", lock->token);
 218                 dav_headers = curl_slist_append(dav_headers, buf.buf);
 219                 strbuf_reset(&buf);
 220         }
 221         if (options & DAV_HEADER_LOCK) {
 222                 strbuf_addf(&buf, "Lock-Token: <%s>", lock->token);
 223                 dav_headers = curl_slist_append(dav_headers, buf.buf);
 224                 strbuf_reset(&buf);
 225         }
 226         if (options & DAV_HEADER_TIMEOUT) {
 227                 strbuf_addf(&buf, "Timeout: Second-%ld", lock->timeout);
 228                 dav_headers = curl_slist_append(dav_headers, buf.buf);
 229                 strbuf_reset(&buf);
 230         }
 231         strbuf_release(&buf);
 232
 233         return dav_headers;
 234 }
 235
 236 static void finish_request(struct transfer_request *request);
 237 static void release_request(struct transfer_request *request);
 238
 239 static void process_response(void *callback_data)
 240 {
 241         struct transfer_request *request =
 242                 (struct transfer_request *)callback_data;
 243
 244         finish_request(request);
 245 }
 246
 247 #ifdef USE_CURL_MULTI
 248
 249 static void start_fetch_loose(struct transfer_request *request)
 250 {
 251         struct active_request_slot *slot;
 252         struct http_object_request *obj_req;
 253
 254         obj_req = new_http_object_request(repo->url, request->obj->sha1);
 255         if (obj_req == NULL) {
 256                 request->state = ABORTED;
 257                 return;
 258         }
 259
 260         slot = obj_req->slot;
 261         slot->callback_func = process_response;
 262         slot->callback_data = request;
 263         request->slot = slot;
 264         request->userData = obj_req;
 265
 266         /* Try to get the request started, abort the request on error */
 267         request->state = RUN_FETCH_LOOSE;
 268         if (!start_active_slot(slot)) {
 269                 fprintf(stderr, "Unable to start GET request\n");
 270                 repo->can_update_info_refs = 0;
 271                 release_http_object_request(obj_req);
 272                 release_request(request);
 273         }
 274 }
 275
 276 static void start_mkcol(struct transfer_request *request)
 277 {
 278         char *hex = sha1_to_hex(request->obj->sha1);
 279         struct active_request_slot *slot;
 280
 281         request->url = get_remote_object_url(repo->url, hex, 1);
 282
 283         slot = get_active_slot();
 284         slot->callback_func = process_response;
 285         slot->callback_data = request;
 286         curl_setup_http_get(slot->curl, request->url, DAV_MKCOL);
 287         curl_easy_setopt(slot->curl, CURLOPT_ERRORBUFFER, request->errorstr);
 288
 289         if (start_active_slot(slot)) {
 290                 request->slot = slot;
 291                 request->state = RUN_MKCOL;
 292         } else {
 293                 request->state = ABORTED;
 294                 free(request->url);
 295                 request->url = NULL;
 296         }
 297 }
 298 #endif
 299
 300 static void start_fetch_packed(struct transfer_request *request)
 301 {
 302         struct packed_git *target;
 303
 304         struct transfer_request *check_request = request_queue_head;
 305         struct http_pack_request *preq;
 306
 307         target = find_sha1_pack(request->obj->sha1, repo->packs);
 308         if (!target) {
 309                 fprintf(stderr, "Unable to fetch %s, will not be able to update server info refs\n", sha1_to_hex(request->obj->sha1));
 310                 repo->can_update_info_refs = 0;
 311                 release_request(request);
 312                 return;
 313         }
 314
 315         fprintf(stderr, "Fetching pack %s\n", sha1_to_hex(target->sha1));
 316         fprintf(stderr, " which contains %s\n", sha1_to_hex(request->obj->sha1));
 317
 318         preq = new_http_pack_request(target, repo->url);
 319         if (preq == NULL) {
 320                 release_http_pack_request(preq);
 321                 repo->can_update_info_refs = 0;
 322                 return;
 323         }
 324         preq->lst = &repo->packs;
 325
 326         /* Make sure there isn't another open request for this pack */
 327         while (check_request) {
 328                 if (check_request->state == RUN_FETCH_PACKED &&
 329                     !strcmp(check_request->url, preq->url)) {
 330                         release_http_pack_request(preq);
 331                         release_request(request);
 332                         return;
 333                 }
 334                 check_request = check_request->next;
 335         }
 336
 337         preq->slot->callback_func = process_response;
 338         preq->slot->callback_data = request;
 339         request->slot = preq->slot;
 340         request->userData = preq;
 341
 342         /* Try to get the request started, abort the request on error */
 343         request->state = RUN_FETCH_PACKED;
 344         if (!start_active_slot(preq->slot)) {
 345                 fprintf(stderr, "Unable to start GET request\n");
 346                 release_http_pack_request(preq);
 347                 repo->can_update_info_refs = 0;
 348                 release_request(request);
 349         }
 350 }
 351
 352 static void start_put(struct transfer_request *request)
 353 {
 354         char *hex = sha1_to_hex(request->obj->sha1);
 355         struct active_request_slot *slot;
 356         struct strbuf buf = STRBUF_INIT;
 357         enum object_type type;
 358         char hdr[50];
 359         void *unpacked;
 360         unsigned long len;
 361         int hdrlen;
 362         ssize_t size;
 363         git_zstream stream;
 364
 365         unpacked = read_sha1_file(request->obj->sha1, &type, &len);
 366         hdrlen = sprintf(hdr, "%s %lu", typename(type), len) + 1;
 367
 368         /* Set it up */
 369         memset(&stream, 0, sizeof(stream));
 370         git_deflate_init(&stream, zlib_compression_level);
 371         size = git_deflate_bound(&stream, len + hdrlen);
 372         strbuf_init(&request->buffer.buf, size);
 373         request->buffer.posn = 0;
 374
 375         /* Compress it */
 376         stream.next_out = (unsigned char *)request->buffer.buf.buf;
 377         stream.avail_out = size;
 378
 379         /* First header.. */
 380         stream.next_in = (void *)hdr;
 381         stream.avail_in = hdrlen;
 382         while (git_deflate(&stream, 0) == Z_OK)
 383                 ; /* nothing */
 384
 385         /* Then the data itself.. */
 386         stream.next_in = unpacked;
 387         stream.avail_in = len;
 388         while (git_deflate(&stream, Z_FINISH) == Z_OK)
 389                 ; /* nothing */
 390         git_deflate_end(&stream);
 391         free(unpacked);
 392
 393         request->buffer.buf.len = stream.total_out;
 394
 395         strbuf_addstr(&buf, "Destination: ");
 396         append_remote_object_url(&buf, repo->url, hex, 0);
 397         request->dest = strbuf_detach(&buf, NULL);
 398
 399         append_remote_object_url(&buf, repo->url, hex, 0);
 400         strbuf_add(&buf, request->lock->tmpfile_suffix, 41);
 401         request->url = strbuf_detach(&buf, NULL);
 402
 403         slot = get_active_slot();
 404         slot->callback_func = process_response;
 405         slot->callback_data = request;
 406         curl_setup_http(slot->curl, request->url, DAV_PUT,
 407                         &request->buffer, fwrite_null);
 408
 409         if (start_active_slot(slot)) {
 410                 request->slot = slot;
 411                 request->state = RUN_PUT;
 412         } else {
 413                 request->state = ABORTED;
 414                 free(request->url);
 415                 request->url = NULL;
 416         }
 417 }
 418
 419 static void start_move(struct transfer_request *request)
 420 {
 421         struct active_request_slot *slot;
 422         struct curl_slist *dav_headers = NULL;
 423
 424         slot = get_active_slot();
 425         slot->callback_func = process_response;
 426         slot->callback_data = request;
 427         curl_setup_http_get(slot->curl, request->url, DAV_MOVE);
 428         dav_headers = curl_slist_append(dav_headers, request->dest);
 429         dav_headers = curl_slist_append(dav_headers, "Overwrite: T");
 430         curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers);
 431
 432         if (start_active_slot(slot)) {
 433                 request->slot = slot;
 434                 request->state = RUN_MOVE;
 435         } else {
 436                 request->state = ABORTED;
 437                 free(request->url);
 438                 request->url = NULL;
 439         }
 440 }
 441
 442 static int refresh_lock(struct remote_lock *lock)
 443 {
 444         struct active_request_slot *slot;
 445         struct slot_results results;
 446         struct curl_slist *dav_headers;
 447         int rc = 0;
 448
 449         lock->refreshing = 1;
 450
 451         dav_headers = get_dav_token_headers(lock, DAV_HEADER_IF | DAV_HEADER_TIMEOUT);
 452
 453         slot = get_active_slot();
 454         slot->results = &results;
 455         curl_setup_http_get(slot->curl, lock->url, DAV_LOCK);
 456         curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers);
 457
 458         if (start_active_slot(slot)) {
 459                 run_active_slot(slot);
 460                 if (results.curl_result != CURLE_OK) {
 461                         fprintf(stderr, "LOCK HTTP error %ld\n",
 462                                 results.http_code);
 463                 } else {
 464                         lock->start_time = time(NULL);
 465                         rc = 1;
 466                 }
 467         }
 468
 469         lock->refreshing = 0;
 470         curl_slist_free_all(dav_headers);
 471
 472         return rc;
 473 }
 474
 475 static void check_locks(void)
 476 {
 477         struct remote_lock *lock = repo->locks;
 478         time_t current_time = time(NULL);
 479         int time_remaining;
 480
 481         while (lock) {
 482                 time_remaining = lock->start_time + lock->timeout -
 483                         current_time;
 484                 if (!lock->refreshing && time_remaining < LOCK_REFRESH) {
 485                         if (!refresh_lock(lock)) {
 486                                 fprintf(stderr,
 487                                         "Unable to refresh lock for %s\n",
 488                                         lock->url);
 489                                 aborted = 1;
 490                                 return;
 491                         }
 492                 }
 493                 lock = lock->next;
 494         }
 495 }
 496
 497 static void release_request(struct transfer_request *request)
 498 {
 499         struct transfer_request *entry = request_queue_head;
 500
 501         if (request == request_queue_head) {
 502                 request_queue_head = request->next;
 503         } else {
 504                 while (entry->next != NULL && entry->next != request)
 505                         entry = entry->next;
 506                 if (entry->next == request)
 507                         entry->next = entry->next->next;
 508         }
 509
 510         free(request->url);
 511         free(request);
 512 }
 513
 514 static void finish_request(struct transfer_request *request)
 515 {
 516         struct http_pack_request *preq;
 517         struct http_object_request *obj_req;
 518
 519         request->curl_result = request->slot->curl_result;
 520         request->http_code = request->slot->http_code;
 521         request->slot = NULL;
 522
 523         /* Keep locks active */
 524         check_locks();
 525
 526         if (request->headers != NULL)
 527                 curl_slist_free_all(request->headers);
 528
 529         /* URL is reused for MOVE after PUT */
 530         if (request->state != RUN_PUT) {
 531                 free(request->url);
 532                 request->url = NULL;
 533         }
 534
 535         if (request->state == RUN_MKCOL) {
 536                 if (request->curl_result == CURLE_OK ||
 537                     request->http_code == 405) {
 538                         remote_dir_exists[request->obj->sha1[0]] = 1;
 539                         start_put(request);
 540                 } else {
 541                         fprintf(stderr, "MKCOL %s failed, aborting (%d/%ld)\n",
 542                                 sha1_to_hex(request->obj->sha1),
 543                                 request->curl_result, request->http_code);
 544                         request->state = ABORTED;
 545                         aborted = 1;
 546                 }
 547         } else if (request->state == RUN_PUT) {
 548                 if (request->curl_result == CURLE_OK) {
 549                         start_move(request);
 550                 } else {
 551                         fprintf(stderr, "PUT %s failed, aborting (%d/%ld)\n",
 552                                 sha1_to_hex(request->obj->sha1),
 553                                 request->curl_result, request->http_code);
 554                         request->state = ABORTED;
 555                         aborted = 1;
 556                 }
 557         } else if (request->state == RUN_MOVE) {
 558                 if (request->curl_result == CURLE_OK) {
 559                         if (push_verbosely)
 560                                 fprintf(stderr, "    sent %s\n",
 561                                         sha1_to_hex(request->obj->sha1));
 562                         request->obj->flags |= REMOTE;
 563                         release_request(request);
 564                 } else {
 565                         fprintf(stderr, "MOVE %s failed, aborting (%d/%ld)\n",
 566                                 sha1_to_hex(request->obj->sha1),
 567                                 request->curl_result, request->http_code);
 568                         request->state = ABORTED;
 569                         aborted = 1;
 570                 }
 571         } else if (request->state == RUN_FETCH_LOOSE) {
 572                 obj_req = (struct http_object_request *)request->userData;
 573
 574                 if (finish_http_object_request(obj_req) == 0)
 575                         if (obj_req->rename == 0)
 576                                 request->obj->flags |= (LOCAL | REMOTE);
 577
 578                 /* Try fetching packed if necessary */
 579                 if (request->obj->flags & LOCAL) {
 580                         release_http_object_request(obj_req);
 581                         release_request(request);
 582                 } else
 583                         start_fetch_packed(request);
 584
 585         } else if (request->state == RUN_FETCH_PACKED) {
 586                 int fail = 1;
 587                 if (request->curl_result != CURLE_OK) {
 588                         fprintf(stderr, "Unable to get pack file %s\n%s",
 589                                 request->url, curl_errorstr);
 590                 } else {
 591                         preq = (struct http_pack_request *)request->userData;
 592
 593                         if (preq) {
 594                                 if (finish_http_pack_request(preq) == 0)
 595                                         fail = 0;
 596                                 release_http_pack_request(preq);
 597                         }
 598                 }
 599                 if (fail)
 600                         repo->can_update_info_refs = 0;
 601                 release_request(request);
 602         }
 603 }
 604
 605 #ifdef USE_CURL_MULTI
 606 static int is_running_queue;
 607 static int fill_active_slot(void *unused)
 608 {
 609         struct transfer_request *request;
 610
 611         if (aborted || !is_running_queue)
 612                 return 0;
 613
 614         for (request = request_queue_head; request; request = request->next) {
 615                 if (request->state == NEED_FETCH) {
 616                         start_fetch_loose(request);
 617                         return 1;
 618                 } else if (pushing && request->state == NEED_PUSH) {
 619                         if (remote_dir_exists[request->obj->sha1[0]] == 1) {
 620                                 start_put(request);
 621                         } else {
 622                                 start_mkcol(request);
 623                         }
 624                         return 1;
 625                 }
 626         }
 627         return 0;
 628 }
 629 #endif
 630
 631 static void get_remote_object_list(unsigned char parent);
 632
 633 static void add_fetch_request(struct object *obj)
 634 {
 635         struct transfer_request *request;
 636
 637         check_locks();
 638
 639         /*
 640          * Don't fetch the object if it's known to exist locally
 641          * or is already in the request queue
 642          */
 643         if (remote_dir_exists[obj->sha1[0]] == -1)
 644                 get_remote_object_list(obj->sha1[0]);
 645         if (obj->flags & (LOCAL | FETCHING))
 646                 return;
 647
 648         obj->flags |= FETCHING;
 649         request = xmalloc(sizeof(*request));
 650         request->obj = obj;
 651         request->url = NULL;
 652         request->lock = NULL;
 653         request->headers = NULL;
 654         request->state = NEED_FETCH;
 655         request->next = request_queue_head;
 656         request_queue_head = request;
 657
 658 #ifdef USE_CURL_MULTI
 659         fill_active_slots();
 660         step_active_slots();
 661 #endif
 662 }
 663
 664 static int add_send_request(struct object *obj, struct remote_lock *lock)
 665 {
 666         struct transfer_request *request;
 667         struct packed_git *target;
 668
 669         /* Keep locks active */
 670         check_locks();
 671
 672         /*
 673          * Don't push the object if it's known to exist on the remote
 674          * or is already in the request queue
 675          */
 676         if (remote_dir_exists[obj->sha1[0]] == -1)
 677                 get_remote_object_list(obj->sha1[0]);
 678         if (obj->flags & (REMOTE | PUSHING))
 679                 return 0;
 680         target = find_sha1_pack(obj->sha1, repo->packs);
 681         if (target) {
 682                 obj->flags |= REMOTE;
 683                 return 0;
 684         }
 685
 686         obj->flags |= PUSHING;
 687         request = xmalloc(sizeof(*request));
 688         request->obj = obj;
 689         request->url = NULL;
 690         request->lock = lock;
 691         request->headers = NULL;
 692         request->state = NEED_PUSH;
 693         request->next = request_queue_head;
 694         request_queue_head = request;
 695
 696 #ifdef USE_CURL_MULTI
 697         fill_active_slots();
 698         step_active_slots();
 699 #endif
 700
 701         return 1;
 702 }
 703
 704 static int fetch_indices(void)
 705 {
 706         int ret;
 707
 708         if (push_verbosely)
 709                 fprintf(stderr, "Getting pack list\n");
 710
 711         switch (http_get_info_packs(repo->url, &repo->packs)) {
 712         case HTTP_OK:
 713         case HTTP_MISSING_TARGET:
 714                 ret = 0;
 715                 break;
 716         default:
 717                 ret = -1;
 718         }
 719
 720         return ret;
 721 }
 722
 723 static void one_remote_object(const char *hex)
 724 {
 725         unsigned char sha1[20];
 726         struct object *obj;
 727
 728         if (get_sha1_hex(hex, sha1) != 0)
 729                 return;
 730
 731         obj = lookup_object(sha1);
 732         if (!obj)
 733                 obj = parse_object(sha1);
 734
 735         /* Ignore remote objects that don't exist locally */
 736         if (!obj)
 737                 return;
 738
 739         obj->flags |= REMOTE;
 740         if (!object_list_contains(objects, obj))
 741                 object_list_insert(obj, &objects);
 742 }
 743
 744 static void handle_lockprop_ctx(struct xml_ctx *ctx, int tag_closed)
 745 {
 746         int *lock_flags = (int *)ctx->userData;
 747
 748         if (tag_closed) {
 749                 if (!strcmp(ctx->name, DAV_CTX_LOCKENTRY)) {
 750                         if ((*lock_flags & DAV_PROP_LOCKEX) &&
 751                             (*lock_flags & DAV_PROP_LOCKWR)) {
 752                                 *lock_flags |= DAV_LOCK_OK;
 753                         }
 754                         *lock_flags &= DAV_LOCK_OK;
 755                 } else if (!strcmp(ctx->name, DAV_CTX_LOCKTYPE_WRITE)) {
 756                         *lock_flags |= DAV_PROP_LOCKWR;
 757                 } else if (!strcmp(ctx->name, DAV_CTX_LOCKTYPE_EXCLUSIVE)) {
 758                         *lock_flags |= DAV_PROP_LOCKEX;
 759                 }
 760         }
 761 }
 762
 763 static void handle_new_lock_ctx(struct xml_ctx *ctx, int tag_closed)
 764 {
 765         struct remote_lock *lock = (struct remote_lock *)ctx->userData;
 766         git_SHA_CTX sha_ctx;
 767         unsigned char lock_token_sha1[20];
 768
 769         if (tag_closed && ctx->cdata) {
 770                 if (!strcmp(ctx->name, DAV_ACTIVELOCK_OWNER)) {
 771                         lock->owner = xmalloc(strlen(ctx->cdata) + 1);
 772                         strcpy(lock->owner, ctx->cdata);
 773                 } else if (!strcmp(ctx->name, DAV_ACTIVELOCK_TIMEOUT)) {
 774                         if (!prefixcmp(ctx->cdata, "Second-"))
 775                                 lock->timeout =
 776                                         strtol(ctx->cdata + 7, NULL, 10);
 777                 } else if (!strcmp(ctx->name, DAV_ACTIVELOCK_TOKEN)) {
 778                         lock->token = xmalloc(strlen(ctx->cdata) + 1);
 779                         strcpy(lock->token, ctx->cdata);
 780
 781                         git_SHA1_Init(&sha_ctx);
 782                         git_SHA1_Update(&sha_ctx, lock->token, strlen(lock->token));
 783                         git_SHA1_Final(lock_token_sha1, &sha_ctx);
 784
 785                         lock->tmpfile_suffix[0] = '_';
 786                         memcpy(lock->tmpfile_suffix + 1, sha1_to_hex(lock_token_sha1), 40);
 787                 }
 788         }
 789 }
 790
 791 static void one_remote_ref(const char *refname);
 792
 793 static void
 794 xml_start_tag(void *userData, const char *name, const char **atts)
 795 {
 796         struct xml_ctx *ctx = (struct xml_ctx *)userData;
 797         const char *c = strchr(name, ':');
 798         int new_len;
 799
 800         if (c == NULL)
 801                 c = name;
 802         else
 803                 c++;
 804
 805         new_len = strlen(ctx->name) + strlen(c) + 2;
 806
 807         if (new_len > ctx->len) {
 808                 ctx->name = xrealloc(ctx->name, new_len);
 809                 ctx->len = new_len;
 810         }
 811         strcat(ctx->name, ".");
 812         strcat(ctx->name, c);
 813
 814         free(ctx->cdata);
 815         ctx->cdata = NULL;
 816
 817         ctx->userFunc(ctx, 0);
 818 }
 819
 820 static void
 821 xml_end_tag(void *userData, const char *name)
 822 {
 823         struct xml_ctx *ctx = (struct xml_ctx *)userData;
 824         const char *c = strchr(name, ':');
 825         char *ep;
 826
 827         ctx->userFunc(ctx, 1);
 828
 829         if (c == NULL)
 830                 c = name;
 831         else
 832                 c++;
 833
 834         ep = ctx->name + strlen(ctx->name) - strlen(c) - 1;
 835         *ep = 0;
 836 }
 837
 838 static void
 839 xml_cdata(void *userData, const XML_Char *s, int len)
 840 {
 841         struct xml_ctx *ctx = (struct xml_ctx *)userData;
 842         free(ctx->cdata);
 843         ctx->cdata = xmemdupz(s, len);
 844 }
 845
 846 static struct remote_lock *lock_remote(const char *path, long timeout)
 847 {
 848         struct active_request_slot *slot;
 849         struct slot_results results;
 850         struct buffer out_buffer = { STRBUF_INIT, 0 };
 851         struct strbuf in_buffer = STRBUF_INIT;
 852         char *url;
 853         char *ep;
 854         char timeout_header[25];
 855         struct remote_lock *lock = NULL;
 856         struct curl_slist *dav_headers = NULL;
 857         struct xml_ctx ctx;
 858         char *escaped;
 859
 860         url = xmalloc(strlen(repo->url) + strlen(path) + 1);
 861         sprintf(url, "%s%s", repo->url, path);
 862
 863         /* Make sure leading directories exist for the remote ref */
 864         ep = strchr(url + strlen(repo->url) + 1, '/');
 865         while (ep) {
 866                 char saved_character = ep[1];
 867                 ep[1] = '\0';
 868                 slot = get_active_slot();
 869                 slot->results = &results;
 870                 curl_setup_http_get(slot->curl, url, DAV_MKCOL);
 871                 if (start_active_slot(slot)) {
 872                         run_active_slot(slot);
 873                         if (results.curl_result != CURLE_OK &&
 874                             results.http_code != 405) {
 875                                 fprintf(stderr,
 876                                         "Unable to create branch path %s\n",
 877                                         url);
 878                                 free(url);
 879                                 return NULL;
 880                         }
 881                 } else {
 882                         fprintf(stderr, "Unable to start MKCOL request\n");
 883                         free(url);
 884                         return NULL;
 885                 }
 886                 ep[1] = saved_character;
 887                 ep = strchr(ep + 1, '/');
 888         }
 889
 890         escaped = xml_entities(ident_default_email());
 891         strbuf_addf(&out_buffer.buf, LOCK_REQUEST, escaped);
 892         free(escaped);
 893
 894         sprintf(timeout_header, "Timeout: Second-%ld", timeout);
 895         dav_headers = curl_slist_append(dav_headers, timeout_header);
 896         dav_headers = curl_slist_append(dav_headers, "Content-Type: text/xml");
 897
 898         slot = get_active_slot();
 899         slot->results = &results;
 900         curl_setup_http(slot->curl, url, DAV_LOCK, &out_buffer, fwrite_buffer);
 901         curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers);
 902         curl_easy_setopt(slot->curl, CURLOPT_FILE, &in_buffer);
 903
 904         lock = xcalloc(1, sizeof(*lock));
 905         lock->timeout = -1;
 906
 907         if (start_active_slot(slot)) {
 908                 run_active_slot(slot);
 909                 if (results.curl_result == CURLE_OK) {
 910                         XML_Parser parser = XML_ParserCreate(NULL);
 911                         enum XML_Status result;
 912                         ctx.name = xcalloc(10, 1);
 913                         ctx.len = 0;
 914                         ctx.cdata = NULL;
 915                         ctx.userFunc = handle_new_lock_ctx;
 916                         ctx.userData = lock;
 917                         XML_SetUserData(parser, &ctx);
 918                         XML_SetElementHandler(parser, xml_start_tag,
 919                                               xml_end_tag);
 920                         XML_SetCharacterDataHandler(parser, xml_cdata);
 921                         result = XML_Parse(parser, in_buffer.buf,
 922                                            in_buffer.len, 1);
 923                         free(ctx.name);
 924                         if (result != XML_STATUS_OK) {
 925                                 fprintf(stderr, "XML error: %s\n",
 926                                         XML_ErrorString(
 927                                                 XML_GetErrorCode(parser)));
 928                                 lock->timeout = -1;
 929                         }
 930                         XML_ParserFree(parser);
 931                 }
 932         } else {
 933                 fprintf(stderr, "Unable to start LOCK request\n");
 934         }
 935
 936         curl_slist_free_all(dav_headers);
 937         strbuf_release(&out_buffer.buf);
 938         strbuf_release(&in_buffer);
 939
 940         if (lock->token == NULL || lock->timeout <= 0) {
 941                 free(lock->token);
 942                 free(lock->owner);
 943                 free(url);
 944                 free(lock);
 945                 lock = NULL;
 946         } else {
 947                 lock->url = url;
 948                 lock->start_time = time(NULL);
 949                 lock->next = repo->locks;
 950                 repo->locks = lock;
 951         }
 952
 953         return lock;
 954 }
 955
 956 static int unlock_remote(struct remote_lock *lock)
 957 {
 958         struct active_request_slot *slot;
 959         struct slot_results results;
 960         struct remote_lock *prev = repo->locks;
 961         struct curl_slist *dav_headers;
 962         int rc = 0;
 963
 964         dav_headers = get_dav_token_headers(lock, DAV_HEADER_LOCK);
 965
 966         slot = get_active_slot();
 967         slot->results = &results;
 968         curl_setup_http_get(slot->curl, lock->url, DAV_UNLOCK);
 969         curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers);
 970
 971         if (start_active_slot(slot)) {
 972                 run_active_slot(slot);
 973                 if (results.curl_result == CURLE_OK)
 974                         rc = 1;
 975                 else
 976                         fprintf(stderr, "UNLOCK HTTP error %ld\n",
 977                                 results.http_code);
 978         } else {
 979                 fprintf(stderr, "Unable to start UNLOCK request\n");
 980         }
 981
 982         curl_slist_free_all(dav_headers);
 983
 984         if (repo->locks == lock) {
 985                 repo->locks = lock->next;
 986         } else {
 987                 while (prev && prev->next != lock)
 988                         prev = prev->next;
 989                 if (prev)
 990                         prev->next = prev->next->next;
 991         }
 992
 993         free(lock->owner);
 994         free(lock->url);
 995         free(lock->token);
 996         free(lock);
 997
 998         return rc;
 999 }
1000
1001 static void remove_locks(void)
1002 {
1003         struct remote_lock *lock = repo->locks;
1004
1005         fprintf(stderr, "Removing remote locks...\n");
1006         while (lock) {
1007                 struct remote_lock *next = lock->next;
1008                 unlock_remote(lock);
1009                 lock = next;
1010         }
1011 }
1012
1013 static void remove_locks_on_signal(int signo)
1014 {
1015         remove_locks();
1016         sigchain_pop(signo);
1017         raise(signo);
1018 }
1019
1020 static void remote_ls(const char *path, int flags,
1021                       void (*userFunc)(struct remote_ls_ctx *ls),
1022                       void *userData);
1023
1024 static void process_ls_object(struct remote_ls_ctx *ls)
1025 {
1026         unsigned int *parent = (unsigned int *)ls->userData;
1027         char *path = ls->dentry_name;
1028         char *obj_hex;
1029
1030         if (!strcmp(ls->path, ls->dentry_name) && (ls->flags & IS_DIR)) {
1031                 remote_dir_exists[*parent] = 1;
1032                 return;
1033         }
1034
1035         if (strlen(path) != 49)
1036                 return;
1037         path += 8;
1038         obj_hex = xmalloc(strlen(path));
1039         /* NB: path is not null-terminated, can not use strlcpy here */
1040         memcpy(obj_hex, path, 2);
1041         strcpy(obj_hex + 2, path + 3);
1042         one_remote_object(obj_hex);
1043         free(obj_hex);
1044 }
1045
1046 static void process_ls_ref(struct remote_ls_ctx *ls)
1047 {
1048         if (!strcmp(ls->path, ls->dentry_name) && (ls->dentry_flags & IS_DIR)) {
1049                 fprintf(stderr, "  %s\n", ls->dentry_name);
1050                 return;
1051         }
1052
1053         if (!(ls->dentry_flags & IS_DIR))
1054                 one_remote_ref(ls->dentry_name);
1055 }
1056
1057 static void handle_remote_ls_ctx(struct xml_ctx *ctx, int tag_closed)
1058 {
1059         struct remote_ls_ctx *ls = (struct remote_ls_ctx *)ctx->userData;
1060
1061         if (tag_closed) {
1062                 if (!strcmp(ctx->name, DAV_PROPFIND_RESP) && ls->dentry_name) {
1063                         if (ls->dentry_flags & IS_DIR) {
1064
1065                                 /* ensure collection names end with slash */
1066                                 str_end_url_with_slash(ls->dentry_name, &ls->dentry_name);
1067
1068                                 if (ls->flags & PROCESS_DIRS) {
1069                                         ls->userFunc(ls);
1070                                 }
1071                                 if (strcmp(ls->dentry_name, ls->path) &&
1072                                     ls->flags & RECURSIVE) {
1073                                         remote_ls(ls->dentry_name,
1074                                                   ls->flags,
1075                                                   ls->userFunc,
1076                                                   ls->userData);
1077                                 }
1078                         } else if (ls->flags & PROCESS_FILES) {
1079                                 ls->userFunc(ls);
1080                         }
1081                 } else if (!strcmp(ctx->name, DAV_PROPFIND_NAME) && ctx->cdata) {
1082                         char *path = ctx->cdata;
1083                         if (*ctx->cdata == 'h') {
1084                                 path = strstr(path, "//");
1085                                 if (path) {
1086                                         path = strchr(path+2, '/');
1087                                 }
1088                         }
1089                         if (path) {
1090                                 const char *url = repo->url;
1091                                 if (repo->path)
1092                                         url = repo->path;
1093                                 if (strncmp(path, url, repo->path_len))
1094                                         error("Parsed path '%s' does not match url: '%s'",
1095                                               path, url);
1096                                 else {
1097                                         path += repo->path_len;
1098                                         ls->dentry_name = xstrdup(path);
1099                                 }
1100                         }
1101                 } else if (!strcmp(ctx->name, DAV_PROPFIND_COLLECTION)) {
1102                         ls->dentry_flags |= IS_DIR;
1103                 }
1104         } else if (!strcmp(ctx->name, DAV_PROPFIND_RESP)) {
1105                 free(ls->dentry_name);
1106                 ls->dentry_name = NULL;
1107                 ls->dentry_flags = 0;
1108         }
1109 }
1110
1111 /*
1112  * NEEDSWORK: remote_ls() ignores info/refs on the remote side.  But it
1113  * should _only_ heed the information from that file, instead of trying to
1114  * determine the refs from the remote file system (badly: it does not even
1115  * know about packed-refs).
1116  */
1117 static void remote_ls(const char *path, int flags,
1118                       void (*userFunc)(struct remote_ls_ctx *ls),
1119                       void *userData)
1120 {
1121         char *url = xmalloc(strlen(repo->url) + strlen(path) + 1);
1122         struct active_request_slot *slot;
1123         struct slot_results results;
1124         struct strbuf in_buffer = STRBUF_INIT;
1125         struct buffer out_buffer = { STRBUF_INIT, 0 };
1126         struct curl_slist *dav_headers = NULL;
1127         struct xml_ctx ctx;
1128         struct remote_ls_ctx ls;
1129
1130         ls.flags = flags;
1131         ls.path = xstrdup(path);
1132         ls.dentry_name = NULL;
1133         ls.dentry_flags = 0;
1134         ls.userData = userData;
1135         ls.userFunc = userFunc;
1136
1137         sprintf(url, "%s%s", repo->url, path);
1138
1139         strbuf_addf(&out_buffer.buf, PROPFIND_ALL_REQUEST);
1140
1141         dav_headers = curl_slist_append(dav_headers, "Depth: 1");
1142         dav_headers = curl_slist_append(dav_headers, "Content-Type: text/xml");
1143
1144         slot = get_active_slot();
1145         slot->results = &results;
1146         curl_setup_http(slot->curl, url, DAV_PROPFIND,
1147                         &out_buffer, fwrite_buffer);
1148         curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers);
1149         curl_easy_setopt(slot->curl, CURLOPT_FILE, &in_buffer);
1150
1151         if (start_active_slot(slot)) {
1152                 run_active_slot(slot);
1153                 if (results.curl_result == CURLE_OK) {
1154                         XML_Parser parser = XML_ParserCreate(NULL);
1155                         enum XML_Status result;
1156                         ctx.name = xcalloc(10, 1);
1157                         ctx.len = 0;
1158                         ctx.cdata = NULL;
1159                         ctx.userFunc = handle_remote_ls_ctx;
1160                         ctx.userData = &ls;
1161                         XML_SetUserData(parser, &ctx);
1162                         XML_SetElementHandler(parser, xml_start_tag,
1163                                               xml_end_tag);
1164                         XML_SetCharacterDataHandler(parser, xml_cdata);
1165                         result = XML_Parse(parser, in_buffer.buf,
1166                                            in_buffer.len, 1);
1167                         free(ctx.name);
1168
1169                         if (result != XML_STATUS_OK) {
1170                                 fprintf(stderr, "XML error: %s\n",
1171                                         XML_ErrorString(
1172                                                 XML_GetErrorCode(parser)));
1173                         }
1174                         XML_ParserFree(parser);
1175                 }
1176         } else {
1177                 fprintf(stderr, "Unable to start PROPFIND request\n");
1178         }
1179
1180         free(ls.path);
1181         free(url);
1182         strbuf_release(&out_buffer.buf);
1183         strbuf_release(&in_buffer);
1184         curl_slist_free_all(dav_headers);
1185 }
1186
1187 static void get_remote_object_list(unsigned char parent)
1188 {
1189         char path[] = "objects/XX/";
1190         static const char hex[] = "0123456789abcdef";
1191         unsigned int val = parent;
1192
1193         path[8] = hex[val >> 4];
1194         path[9] = hex[val & 0xf];
1195         remote_dir_exists[val] = 0;
1196         remote_ls(path, (PROCESS_FILES | PROCESS_DIRS),
1197                   process_ls_object, &val);
1198 }
1199
1200 static int locking_available(void)
1201 {
1202         struct active_request_slot *slot;
1203         struct slot_results results;
1204         struct strbuf in_buffer = STRBUF_INIT;
1205         struct buffer out_buffer = { STRBUF_INIT, 0 };
1206         struct curl_slist *dav_headers = NULL;
1207         struct xml_ctx ctx;
1208         int lock_flags = 0;
1209         char *escaped;
1210
1211         escaped = xml_entities(repo->url);
1212         strbuf_addf(&out_buffer.buf, PROPFIND_SUPPORTEDLOCK_REQUEST, escaped);
1213         free(escaped);
1214
1215         dav_headers = curl_slist_append(dav_headers, "Depth: 0");
1216         dav_headers = curl_slist_append(dav_headers, "Content-Type: text/xml");
1217
1218         slot = get_active_slot();
1219         slot->results = &results;
1220         curl_setup_http(slot->curl, repo->url, DAV_PROPFIND,
1221                         &out_buffer, fwrite_buffer);
1222         curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers);
1223         curl_easy_setopt(slot->curl, CURLOPT_FILE, &in_buffer);
1224
1225         if (start_active_slot(slot)) {
1226                 run_active_slot(slot);
1227                 if (results.curl_result == CURLE_OK) {
1228                         XML_Parser parser = XML_ParserCreate(NULL);
1229                         enum XML_Status result;
1230                         ctx.name = xcalloc(10, 1);
1231                         ctx.len = 0;
1232                         ctx.cdata = NULL;
1233                         ctx.userFunc = handle_lockprop_ctx;
1234                         ctx.userData = &lock_flags;
1235                         XML_SetUserData(parser, &ctx);
1236                         XML_SetElementHandler(parser, xml_start_tag,
1237                                               xml_end_tag);
1238                         result = XML_Parse(parser, in_buffer.buf,
1239                                            in_buffer.len, 1);
1240                         free(ctx.name);
1241
1242                         if (result != XML_STATUS_OK) {
1243                                 fprintf(stderr, "XML error: %s\n",
1244                                         XML_ErrorString(
1245                                                 XML_GetErrorCode(parser)));
1246                                 lock_flags = 0;
1247                         }
1248                         XML_ParserFree(parser);
1249                         if (!lock_flags)
1250                                 error("no DAV locking support on %s",
1251                                       repo->url);
1252
1253                 } else {
1254                         error("Cannot access URL %s, return code %d",
1255                               repo->url, results.curl_result);
1256                         lock_flags = 0;
1257                 }
1258         } else {
1259                 error("Unable to start PROPFIND request on %s", repo->url);
1260         }
1261
1262         strbuf_release(&out_buffer.buf);
1263         strbuf_release(&in_buffer);
1264         curl_slist_free_all(dav_headers);
1265
1266         return lock_flags;
1267 }
1268
1269 static struct object_list **add_one_object(struct object *obj, struct object_list **p)
1270 {
1271         struct object_list *entry = xmalloc(sizeof(struct object_list));
1272         entry->item = obj;
1273         entry->next = *p;
1274         *p = entry;
1275         return &entry->next;
1276 }
1277
1278 static struct object_list **process_blob(struct blob *blob,
1279                                          struct object_list **p,
1280                                          struct name_path *path,
1281                                          const char *name)
1282 {
1283         struct object *obj = &blob->object;
1284
1285         obj->flags |= LOCAL;
1286
1287         if (obj->flags & (UNINTERESTING | SEEN))
1288                 return p;
1289
1290         obj->flags |= SEEN;
1291         return add_one_object(obj, p);
1292 }
1293
1294 static struct object_list **process_tree(struct tree *tree,
1295                                          struct object_list **p,
1296                                          struct name_path *path,
1297                                          const char *name)
1298 {
1299         struct object *obj = &tree->object;
1300         struct tree_desc desc;
1301         struct name_entry entry;
1302         struct name_path me;
1303
1304         obj->flags |= LOCAL;
1305
1306         if (obj->flags & (UNINTERESTING | SEEN))
1307                 return p;
1308         if (parse_tree(tree) < 0)
1309                 die("bad tree object %s", sha1_to_hex(obj->sha1));
1310
1311         obj->flags |= SEEN;
1312         name = xstrdup(name);
1313         p = add_one_object(obj, p);
1314         me.up = path;
1315         me.elem = name;
1316         me.elem_len = strlen(name);
1317
1318         init_tree_desc(&desc, tree->buffer, tree->size);
1319
1320         while (tree_entry(&desc, &entry))
1321                 switch (object_type(entry.mode)) {
1322                 case OBJ_TREE:
1323                         p = process_tree(lookup_tree(entry.sha1), p, &me, name);
1324                         break;
1325                 case OBJ_BLOB:
1326                         p = process_blob(lookup_blob(entry.sha1), p, &me, name);
1327                         break;
1328                 default:
1329                         /* Subproject commit - not in this repository */
1330                         break;
1331                 }
1332
1333         free_tree_buffer(tree);
1334         return p;
1335 }
1336
1337 static int get_delta(struct rev_info *revs, struct remote_lock *lock)
1338 {
1339         int i;
1340         struct commit *commit;
1341         struct object_list **p = &objects;
1342         int count = 0;
1343
1344         while ((commit = get_revision(revs)) != NULL) {
1345                 p = process_tree(commit->tree, p, NULL, "");
1346                 commit->object.flags |= LOCAL;
1347                 if (!(commit->object.flags & UNINTERESTING))
1348                         count += add_send_request(&commit->object, lock);
1349         }
1350
1351         for (i = 0; i < revs->pending.nr; i++) {
1352                 struct object_array_entry *entry = revs->pending.objects + i;
1353                 struct object *obj = entry->item;
1354                 const char *name = entry->name;
1355
1356                 if (obj->flags & (UNINTERESTING | SEEN))
1357                         continue;
1358                 if (obj->type == OBJ_TAG) {
1359                         obj->flags |= SEEN;
1360                         p = add_one_object(obj, p);
1361                         continue;
1362                 }
1363                 if (obj->type == OBJ_TREE) {
1364                         p = process_tree((struct tree *)obj, p, NULL, name);
1365                         continue;
1366                 }
1367                 if (obj->type == OBJ_BLOB) {
1368                         p = process_blob((struct blob *)obj, p, NULL, name);
1369                         continue;
1370                 }
1371                 die("unknown pending object %s (%s)", sha1_to_hex(obj->sha1), name);
1372         }
1373
1374         while (objects) {
1375                 if (!(objects->item->flags & UNINTERESTING))
1376                         count += add_send_request(objects->item, lock);
1377                 objects = objects->next;
1378         }
1379
1380         return count;
1381 }
1382
1383 static int update_remote(unsigned char *sha1, struct remote_lock *lock)
1384 {
1385         struct active_request_slot *slot;
1386         struct slot_results results;
1387         struct buffer out_buffer = { STRBUF_INIT, 0 };
1388         struct curl_slist *dav_headers;
1389
1390         dav_headers = get_dav_token_headers(lock, DAV_HEADER_IF);
1391
1392         strbuf_addf(&out_buffer.buf, "%s\n", sha1_to_hex(sha1));
1393
1394         slot = get_active_slot();
1395         slot->results = &results;
1396         curl_setup_http(slot->curl, lock->url, DAV_PUT,
1397                         &out_buffer, fwrite_null);
1398         curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers);
1399
1400         if (start_active_slot(slot)) {
1401                 run_active_slot(slot);
1402                 strbuf_release(&out_buffer.buf);
1403                 if (results.curl_result != CURLE_OK) {
1404                         fprintf(stderr,
1405                                 "PUT error: curl result=%d, HTTP code=%ld\n",
1406                                 results.curl_result, results.http_code);
1407                         /* We should attempt recovery? */
1408                         return 0;
1409                 }
1410         } else {
1411                 strbuf_release(&out_buffer.buf);
1412                 fprintf(stderr, "Unable to start PUT request\n");
1413                 return 0;
1414         }
1415
1416         return 1;
1417 }
1418
1419 static struct ref *remote_refs;
1420
1421 static void one_remote_ref(const char *refname)
1422 {
1423         struct ref *ref;
1424         struct object *obj;
1425
1426         ref = alloc_ref(refname);
1427
1428         if (http_fetch_ref(repo->url, ref) != 0) {
1429                 fprintf(stderr,
1430                         "Unable to fetch ref %s from %s\n",
1431                         refname, repo->url);
1432                 free(ref);
1433                 return;
1434         }
1435
1436         /*
1437          * Fetch a copy of the object if it doesn't exist locally - it
1438          * may be required for updating server info later.
1439          */
1440         if (repo->can_update_info_refs && !has_sha1_file(ref->old_sha1)) {
1441                 obj = lookup_unknown_object(ref->old_sha1);
1442                 if (obj) {
1443                         fprintf(stderr, "  fetch %s for %s\n",
1444                                 sha1_to_hex(ref->old_sha1), refname);
1445                         add_fetch_request(obj);
1446                 }
1447         }
1448
1449         ref->next = remote_refs;
1450         remote_refs = ref;
1451 }
1452
1453 static void get_dav_remote_heads(void)
1454 {
1455         remote_ls("refs/", (PROCESS_FILES | PROCESS_DIRS | RECURSIVE), process_ls_ref, NULL);
1456 }
1457
1458 static void add_remote_info_ref(struct remote_ls_ctx *ls)
1459 {
1460         struct strbuf *buf = (struct strbuf *)ls->userData;
1461         struct object *o;
1462         int len;
1463         char *ref_info;
1464         struct ref *ref;
1465
1466         ref = alloc_ref(ls->dentry_name);
1467
1468         if (http_fetch_ref(repo->url, ref) != 0) {
1469                 fprintf(stderr,
1470                         "Unable to fetch ref %s from %s\n",
1471                         ls->dentry_name, repo->url);
1472                 aborted = 1;
1473                 free(ref);
1474                 return;
1475         }
1476
1477         o = parse_object(ref->old_sha1);
1478         if (!o) {
1479                 fprintf(stderr,
1480                         "Unable to parse object %s for remote ref %s\n",
1481                         sha1_to_hex(ref->old_sha1), ls->dentry_name);
1482                 aborted = 1;
1483                 free(ref);
1484                 return;
1485         }
1486
1487         len = strlen(ls->dentry_name) + 42;
1488         ref_info = xcalloc(len + 1, 1);
1489         sprintf(ref_info, "%s   %s\n",
1490                 sha1_to_hex(ref->old_sha1), ls->dentry_name);
1491         fwrite_buffer(ref_info, 1, len, buf);
1492         free(ref_info);
1493
1494         if (o->type == OBJ_TAG) {
1495                 o = deref_tag(o, ls->dentry_name, 0);
1496                 if (o) {
1497                         len = strlen(ls->dentry_name) + 45;
1498                         ref_info = xcalloc(len + 1, 1);
1499                         sprintf(ref_info, "%s   %s^{}\n",
1500                                 sha1_to_hex(o->sha1), ls->dentry_name);
1501                         fwrite_buffer(ref_info, 1, len, buf);
1502                         free(ref_info);
1503                 }
1504         }
1505         free(ref);
1506 }
1507
1508 static void update_remote_info_refs(struct remote_lock *lock)
1509 {
1510         struct buffer buffer = { STRBUF_INIT, 0 };
1511         struct active_request_slot *slot;
1512         struct slot_results results;
1513         struct curl_slist *dav_headers;
1514
1515         remote_ls("refs/", (PROCESS_FILES | RECURSIVE),
1516                   add_remote_info_ref, &buffer.buf);
1517         if (!aborted) {
1518                 dav_headers = get_dav_token_headers(lock, DAV_HEADER_IF);
1519
1520                 slot = get_active_slot();
1521                 slot->results = &results;
1522                 curl_setup_http(slot->curl, lock->url, DAV_PUT,
1523                                 &buffer, fwrite_null);
1524                 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers);
1525
1526                 if (start_active_slot(slot)) {
1527                         run_active_slot(slot);
1528                         if (results.curl_result != CURLE_OK) {
1529                                 fprintf(stderr,
1530                                         "PUT error: curl result=%d, HTTP code=%ld\n",
1531                                         results.curl_result, results.http_code);
1532                         }
1533                 }
1534         }
1535         strbuf_release(&buffer.buf);
1536 }
1537
1538 static int remote_exists(const char *path)
1539 {
1540         char *url = xmalloc(strlen(repo->url) + strlen(path) + 1);
1541         int ret;
1542
1543         sprintf(url, "%s%s", repo->url, path);
1544
1545         switch (http_get_strbuf(url, NULL, NULL, 0)) {
1546         case HTTP_OK:
1547                 ret = 1;
1548                 break;
1549         case HTTP_MISSING_TARGET:
1550                 ret = 0;
1551                 break;
1552         case HTTP_ERROR:
1553                 error("unable to access '%s': %s", url, curl_errorstr);
1554         default:
1555                 ret = -1;
1556         }
1557         free(url);
1558         return ret;
1559 }
1560
1561 static void fetch_symref(const char *path, char **symref, unsigned char *sha1)
1562 {
1563         char *url;
1564         struct strbuf buffer = STRBUF_INIT;
1565
1566         url = xmalloc(strlen(repo->url) + strlen(path) + 1);
1567         sprintf(url, "%s%s", repo->url, path);
1568
1569         if (http_get_strbuf(url, NULL, &buffer, 0) != HTTP_OK)
1570                 die("Couldn't get %s for remote symref\n%s", url,
1571                     curl_errorstr);
1572         free(url);
1573
1574         free(*symref);
1575         *symref = NULL;
1576         hashclr(sha1);
1577
1578         if (buffer.len == 0)
1579                 return;
1580
1581         /* If it's a symref, set the refname; otherwise try for a sha1 */
1582         if (!prefixcmp((char *)buffer.buf, "ref: ")) {
1583                 *symref = xmemdupz((char *)buffer.buf + 5, buffer.len - 6);
1584         } else {
1585                 get_sha1_hex(buffer.buf, sha1);
1586         }
1587
1588         strbuf_release(&buffer);
1589 }
1590
1591 static int verify_merge_base(unsigned char *head_sha1, struct ref *remote)
1592 {
1593         struct commit *head = lookup_commit_or_die(head_sha1, "HEAD");
1594         struct commit *branch = lookup_commit_or_die(remote->old_sha1, remote->name);
1595
1596         return in_merge_bases(branch, head);
1597 }
1598
1599 static int delete_remote_branch(const char *pattern, int force)
1600 {
1601         struct ref *refs = remote_refs;
1602         struct ref *remote_ref = NULL;
1603         unsigned char head_sha1[20];
1604         char *symref = NULL;
1605         int match;
1606         int patlen = strlen(pattern);
1607         int i;
1608         struct active_request_slot *slot;
1609         struct slot_results results;
1610         char *url;
1611
1612         /* Find the remote branch(es) matching the specified branch name */
1613         for (match = 0; refs; refs = refs->next) {
1614                 char *name = refs->name;
1615                 int namelen = strlen(name);
1616                 if (namelen < patlen ||
1617                     memcmp(name + namelen - patlen, pattern, patlen))
1618                         continue;
1619                 if (namelen != patlen && name[namelen - patlen - 1] != '/')
1620                         continue;
1621                 match++;
1622                 remote_ref = refs;
1623         }
1624         if (match == 0)
1625                 return error("No remote branch matches %s", pattern);
1626         if (match != 1)
1627                 return error("More than one remote branch matches %s",
1628                              pattern);
1629
1630         /*
1631          * Remote HEAD must be a symref (not exactly foolproof; a remote
1632          * symlink to a symref will look like a symref)
1633          */
1634         fetch_symref("HEAD", &symref, head_sha1);
1635         if (!symref)
1636                 return error("Remote HEAD is not a symref");
1637
1638         /* Remote branch must not be the remote HEAD */
1639         for (i = 0; symref && i < MAXDEPTH; i++) {
1640                 if (!strcmp(remote_ref->name, symref))
1641                         return error("Remote branch %s is the current HEAD",
1642                                      remote_ref->name);
1643                 fetch_symref(symref, &symref, head_sha1);
1644         }
1645
1646         /* Run extra sanity checks if delete is not forced */
1647         if (!force) {
1648                 /* Remote HEAD must resolve to a known object */
1649                 if (symref)
1650                         return error("Remote HEAD symrefs too deep");
1651                 if (is_null_sha1(head_sha1))
1652                         return error("Unable to resolve remote HEAD");
1653                 if (!has_sha1_file(head_sha1))
1654                         return error("Remote HEAD resolves to object %s\nwhich does not exist locally, perhaps you need to fetch?", sha1_to_hex(head_sha1));
1655
1656                 /* Remote branch must resolve to a known object */
1657                 if (is_null_sha1(remote_ref->old_sha1))
1658                         return error("Unable to resolve remote branch %s",
1659                                      remote_ref->name);
1660                 if (!has_sha1_file(remote_ref->old_sha1))
1661                         return error("Remote branch %s resolves to object %s\nwhich does not exist locally, perhaps you need to fetch?", remote_ref->name, sha1_to_hex(remote_ref->old_sha1));
1662
1663                 /* Remote branch must be an ancestor of remote HEAD */
1664                 if (!verify_merge_base(head_sha1, remote_ref)) {
1665                         return error("The branch '%s' is not an ancestor "
1666                                      "of your current HEAD.\n"
1667                                      "If you are sure you want to delete it,"
1668                                      " run:\n\t'git http-push -D %s %s'",
1669                                      remote_ref->name, repo->url, pattern);
1670                 }
1671         }
1672
1673         /* Send delete request */
1674         fprintf(stderr, "Removing remote branch '%s'\n", remote_ref->name);
1675         if (dry_run)
1676                 return 0;
1677         url = xmalloc(strlen(repo->url) + strlen(remote_ref->name) + 1);
1678         sprintf(url, "%s%s", repo->url, remote_ref->name);
1679         slot = get_active_slot();
1680         slot->results = &results;
1681         curl_setup_http_get(slot->curl, url, DAV_DELETE);
1682         if (start_active_slot(slot)) {
1683                 run_active_slot(slot);
1684                 free(url);
1685                 if (results.curl_result != CURLE_OK)
1686                         return error("DELETE request failed (%d/%ld)",
1687                                      results.curl_result, results.http_code);
1688         } else {
1689                 free(url);
1690                 return error("Unable to start DELETE request");
1691         }
1692
1693         return 0;
1694 }
1695
1696 static void run_request_queue(void)
1697 {
1698 #ifdef USE_CURL_MULTI
1699         is_running_queue = 1;
1700         fill_active_slots();
1701         add_fill_function(NULL, fill_active_slot);
1702 #endif
1703         do {
1704                 finish_all_active_slots();
1705 #ifdef USE_CURL_MULTI
1706                 fill_active_slots();
1707 #endif
1708         } while (request_queue_head && !aborted);
1709
1710 #ifdef USE_CURL_MULTI
1711         is_running_queue = 0;
1712 #endif
1713 }
1714
1715 int main(int argc, char **argv)
1716 {
1717         struct transfer_request *request;
1718         struct transfer_request *next_request;
1719         int nr_refspec = 0;
1720         char **refspec = NULL;
1721         struct remote_lock *ref_lock = NULL;
1722         struct remote_lock *info_ref_lock = NULL;
1723         struct rev_info revs;
1724         int delete_branch = 0;
1725         int force_delete = 0;
1726         int objects_to_send;
1727         int rc = 0;
1728         int i;
1729         int new_refs;
1730         struct ref *ref, *local_refs;
1731
1732         git_setup_gettext();
1733
1734         git_extract_argv0_path(argv[0]);
1735
1736         repo = xcalloc(sizeof(*repo), 1);
1737
1738         argv++;
1739         for (i = 1; i < argc; i++, argv++) {
1740                 char *arg = *argv;
1741
1742                 if (*arg == '-') {
1743                         if (!strcmp(arg, "--all")) {
1744                                 push_all = MATCH_REFS_ALL;
1745                                 continue;
1746                         }
1747                         if (!strcmp(arg, "--force")) {
1748                                 force_all = 1;
1749                                 continue;
1750                         }
1751                         if (!strcmp(arg, "--dry-run")) {
1752                                 dry_run = 1;
1753                                 continue;
1754                         }
1755                         if (!strcmp(arg, "--helper-status")) {
1756                                 helper_status = 1;
1757                                 continue;
1758                         }
1759                         if (!strcmp(arg, "--verbose")) {
1760                                 push_verbosely = 1;
1761                                 http_is_verbose = 1;
1762                                 continue;
1763                         }
1764                         if (!strcmp(arg, "-d")) {
1765                                 delete_branch = 1;
1766                                 continue;
1767                         }
1768                         if (!strcmp(arg, "-D")) {
1769                                 delete_branch = 1;
1770                                 force_delete = 1;
1771                                 continue;
1772                         }
1773                         if (!strcmp(arg, "-h"))
1774                                 usage(http_push_usage);
1775                 }
1776                 if (!repo->url) {
1777                         char *path = strstr(arg, "//");
1778                         str_end_url_with_slash(arg, &repo->url);
1779                         repo->path_len = strlen(repo->url);
1780                         if (path) {
1781                                 repo->path = strchr(path+2, '/');
1782                                 if (repo->path)
1783                                         repo->path_len = strlen(repo->path);
1784                         }
1785                         continue;
1786                 }
1787                 refspec = argv;
1788                 nr_refspec = argc - i;
1789                 break;
1790         }
1791
1792 #ifndef USE_CURL_MULTI
1793         die("git-push is not available for http/https repository when not compiled with USE_CURL_MULTI");
1794 #endif
1795
1796         if (!repo->url)
1797                 usage(http_push_usage);
1798
1799         if (delete_branch && nr_refspec != 1)
1800                 die("You must specify only one branch name when deleting a remote branch");
1801
1802         setup_git_directory();
1803
1804         memset(remote_dir_exists, -1, 256);
1805
1806         http_init(NULL, repo->url, 1);
1807
1808 #ifdef USE_CURL_MULTI
1809         is_running_queue = 0;
1810 #endif
1811
1812         /* Verify DAV compliance/lock support */
1813         if (!locking_available()) {
1814                 rc = 1;
1815                 goto cleanup;
1816         }
1817
1818         sigchain_push_common(remove_locks_on_signal);
1819
1820         /* Check whether the remote has server info files */
1821         repo->can_update_info_refs = 0;
1822         repo->has_info_refs = remote_exists("info/refs");
1823         repo->has_info_packs = remote_exists("objects/info/packs");
1824         if (repo->has_info_refs) {
1825                 info_ref_lock = lock_remote("info/refs", LOCK_TIME);
1826                 if (info_ref_lock)
1827                         repo->can_update_info_refs = 1;
1828                 else {
1829                         error("cannot lock existing info/refs");
1830                         rc = 1;
1831                         goto cleanup;
1832                 }
1833         }
1834         if (repo->has_info_packs)
1835                 fetch_indices();
1836
1837         /* Get a list of all local and remote heads to validate refspecs */
1838         local_refs = get_local_heads();
1839         fprintf(stderr, "Fetching remote heads...\n");
1840         get_dav_remote_heads();
1841         run_request_queue();
1842
1843         /* Remove a remote branch if -d or -D was specified */
1844         if (delete_branch) {
1845                 if (delete_remote_branch(refspec[0], force_delete) == -1) {
1846                         fprintf(stderr, "Unable to delete remote branch %s\n",
1847                                 refspec[0]);
1848                         if (helper_status)
1849                                 printf("error %s cannot remove\n", refspec[0]);
1850                 }
1851                 goto cleanup;
1852         }
1853
1854         /* match them up */
1855         if (match_push_refs(local_refs, &remote_refs,
1856                             nr_refspec, (const char **) refspec, push_all)) {
1857                 rc = -1;
1858                 goto cleanup;
1859         }
1860         if (!remote_refs) {
1861                 fprintf(stderr, "No refs in common and none specified; doing nothing.\n");
1862                 if (helper_status)
1863                         printf("error null no match\n");
1864                 rc = 0;
1865                 goto cleanup;
1866         }
1867
1868         new_refs = 0;
1869         for (ref = remote_refs; ref; ref = ref->next) {
1870                 char old_hex[60], *new_hex;
1871                 const char *commit_argv[5];
1872                 int commit_argc;
1873                 char *new_sha1_hex, *old_sha1_hex;
1874
1875                 if (!ref->peer_ref)
1876                         continue;
1877
1878                 if (is_null_sha1(ref->peer_ref->new_sha1)) {
1879                         if (delete_remote_branch(ref->name, 1) == -1) {
1880                                 error("Could not remove %s", ref->name);
1881                                 if (helper_status)
1882                                         printf("error %s cannot remove\n", ref->name);
1883                                 rc = -4;
1884                         }
1885                         else if (helper_status)
1886                                 printf("ok %s\n", ref->name);
1887                         new_refs++;
1888                         continue;
1889                 }
1890
1891                 if (!hashcmp(ref->old_sha1, ref->peer_ref->new_sha1)) {
1892                         if (push_verbosely)
1893                                 fprintf(stderr, "'%s': up-to-date\n", ref->name);
1894                         if (helper_status)
1895                                 printf("ok %s up to date\n", ref->name);
1896                         continue;
1897                 }
1898
1899                 if (!force_all &&
1900                     !is_null_sha1(ref->old_sha1) &&
1901                     !ref->force) {
1902                         if (!has_sha1_file(ref->old_sha1) ||
1903                             !ref_newer(ref->peer_ref->new_sha1,
1904                                        ref->old_sha1)) {
1905                                 /*
1906                                  * We do not have the remote ref, or
1907                                  * we know that the remote ref is not
1908                                  * an ancestor of what we are trying to
1909                                  * push.  Either way this can be losing
1910                                  * commits at the remote end and likely
1911                                  * we were not up to date to begin with.
1912                                  */
1913                                 error("remote '%s' is not an ancestor of\n"
1914                                       "local '%s'.\n"
1915                                       "Maybe you are not up-to-date and "
1916                                       "need to pull first?",
1917                                       ref->name,
1918                                       ref->peer_ref->name);
1919                                 if (helper_status)
1920                                         printf("error %s non-fast forward\n", ref->name);
1921                                 rc = -2;
1922                                 continue;
1923                         }
1924                 }
1925                 hashcpy(ref->new_sha1, ref->peer_ref->new_sha1);
1926                 new_refs++;
1927                 strcpy(old_hex, sha1_to_hex(ref->old_sha1));
1928                 new_hex = sha1_to_hex(ref->new_sha1);
1929
1930                 fprintf(stderr, "updating '%s'", ref->name);
1931                 if (strcmp(ref->name, ref->peer_ref->name))
1932                         fprintf(stderr, " using '%s'", ref->peer_ref->name);
1933                 fprintf(stderr, "\n  from %s\n  to   %s\n", old_hex, new_hex);
1934                 if (dry_run) {
1935                         if (helper_status)
1936                                 printf("ok %s\n", ref->name);
1937                         continue;
1938                 }
1939
1940                 /* Lock remote branch ref */
1941                 ref_lock = lock_remote(ref->name, LOCK_TIME);
1942                 if (ref_lock == NULL) {
1943                         fprintf(stderr, "Unable to lock remote branch %s\n",
1944                                 ref->name);
1945                         if (helper_status)
1946                                 printf("error %s lock error\n", ref->name);
1947                         rc = 1;
1948                         continue;
1949                 }
1950
1951                 /* Set up revision info for this refspec */
1952                 commit_argc = 3;
1953                 new_sha1_hex = xstrdup(sha1_to_hex(ref->new_sha1));
1954                 old_sha1_hex = NULL;
1955                 commit_argv[1] = "--objects";
1956                 commit_argv[2] = new_sha1_hex;
1957                 if (!push_all && !is_null_sha1(ref->old_sha1)) {
1958                         old_sha1_hex = xmalloc(42);
1959                         sprintf(old_sha1_hex, "^%s",
1960                                 sha1_to_hex(ref->old_sha1));
1961                         commit_argv[3] = old_sha1_hex;
1962                         commit_argc++;
1963                 }
1964                 commit_argv[commit_argc] = NULL;
1965                 init_revisions(&revs, setup_git_directory());
1966                 setup_revisions(commit_argc, commit_argv, &revs, NULL);
1967                 revs.edge_hint = 0; /* just in case */
1968                 free(new_sha1_hex);
1969                 if (old_sha1_hex) {
1970                         free(old_sha1_hex);
1971                         commit_argv[1] = NULL;
1972                 }
1973
1974                 /* Generate a list of objects that need to be pushed */
1975                 pushing = 0;
1976                 if (prepare_revision_walk(&revs))
1977                         die("revision walk setup failed");
1978                 mark_edges_uninteresting(&revs, NULL);
1979                 objects_to_send = get_delta(&revs, ref_lock);
1980                 finish_all_active_slots();
1981
1982                 /* Push missing objects to remote, this would be a
1983                    convenient time to pack them first if appropriate. */
1984                 pushing = 1;
1985                 if (objects_to_send)
1986                         fprintf(stderr, "    sending %d objects\n",
1987                                 objects_to_send);
1988
1989                 run_request_queue();
1990
1991                 /* Update the remote branch if all went well */
1992                 if (aborted || !update_remote(ref->new_sha1, ref_lock))
1993                         rc = 1;
1994
1995                 if (!rc)
1996                         fprintf(stderr, "    done\n");
1997                 if (helper_status)
1998                         printf("%s %s\n", !rc ? "ok" : "error", ref->name);
1999                 unlock_remote(ref_lock);
2000                 check_locks();
2001         }
2002
2003         /* Update remote server info if appropriate */
2004         if (repo->has_info_refs && new_refs) {
2005                 if (info_ref_lock && repo->can_update_info_refs) {
2006                         fprintf(stderr, "Updating remote server info\n");
2007                         if (!dry_run)
2008                                 update_remote_info_refs(info_ref_lock);
2009                 } else {
2010                         fprintf(stderr, "Unable to update server info\n");
2011                 }
2012         }
2013
2014  cleanup:
2015         if (info_ref_lock)
2016                 unlock_remote(info_ref_lock);
2017         free(repo);
2018
2019         http_cleanup();
2020
2021         request = request_queue_head;
2022         while (request != NULL) {
2023                 next_request = request->next;
2024                 release_request(request);
2025                 request = next_request;
2026         }
2027
2028         return rc;
2029 }