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