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