16 static const char http_push_usage[] =
17 "git-http-push [--all] [--force] [--verbose] <remote> [<head>...]\n";
24 #define XML_STATUS_OK 1
25 #define XML_STATUS_ERROR 0
28 #define PREV_BUF_SIZE 4096
29 #define RANGE_HEADER_SIZE 30
32 #define DAV_LOCK "LOCK"
33 #define DAV_MKCOL "MKCOL"
34 #define DAV_MOVE "MOVE"
35 #define DAV_PROPFIND "PROPFIND"
37 #define DAV_UNLOCK "UNLOCK"
38 #define DAV_DELETE "DELETE"
41 #define DAV_PROP_LOCKWR (1u << 0)
42 #define DAV_PROP_LOCKEX (1u << 1)
43 #define DAV_LOCK_OK (1u << 2)
45 /* DAV XML properties */
46 #define DAV_CTX_LOCKENTRY ".multistatus.response.propstat.prop.supportedlock.lockentry"
47 #define DAV_CTX_LOCKTYPE_WRITE ".multistatus.response.propstat.prop.supportedlock.lockentry.locktype.write"
48 #define DAV_CTX_LOCKTYPE_EXCLUSIVE ".multistatus.response.propstat.prop.supportedlock.lockentry.lockscope.exclusive"
49 #define DAV_ACTIVELOCK_OWNER ".prop.lockdiscovery.activelock.owner.href"
50 #define DAV_ACTIVELOCK_TIMEOUT ".prop.lockdiscovery.activelock.timeout"
51 #define DAV_ACTIVELOCK_TOKEN ".prop.lockdiscovery.activelock.locktoken.href"
52 #define DAV_PROPFIND_RESP ".multistatus.response"
53 #define DAV_PROPFIND_NAME ".multistatus.response.href"
54 #define DAV_PROPFIND_COLLECTION ".multistatus.response.propstat.prop.resourcetype.collection"
56 /* DAV request body templates */
57 #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>"
58 #define PROPFIND_ALL_REQUEST "<?xml version=\"1.0\" encoding=\"utf-8\" ?>\n<D:propfind xmlns:D=\"DAV:\">\n<D:allprop/>\n</D:propfind>"
59 #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>"
62 #define LOCK_REFRESH 30
64 /* bits #0-15 in revision.h */
66 #define LOCAL (1u<<16)
67 #define REMOTE (1u<<17)
68 #define FETCHING (1u<<18)
69 #define PUSHING (1u<<19)
71 /* We allow "recursive" symbolic refs. Only within reason, though */
76 static signed char remote_dir_exists[256];
78 static struct curl_slist *no_pragma_header;
79 static struct curl_slist *default_headers;
81 static int push_verbosely;
85 static struct object_list *objects;
92 int can_update_info_refs;
94 struct packed_git *packs;
95 struct remote_lock *locks;
98 static struct repo *remote;
100 enum transfer_state {
112 struct transfer_request
117 struct remote_lock *lock;
118 struct curl_slist *headers;
119 struct buffer buffer;
120 char filename[PATH_MAX];
121 char tmpfile[PATH_MAX];
124 enum transfer_state state;
125 CURLcode curl_result;
126 char errorstr[CURL_ERROR_SIZE];
128 unsigned char real_sha1[20];
134 struct active_request_slot *slot;
135 struct transfer_request *next;
138 static struct transfer_request *request_queue_head;
145 void (*userFunc)(struct xml_ctx *ctx, int tag_closed);
157 struct remote_lock *next;
160 /* Flags that control remote_ls processing */
161 #define PROCESS_FILES (1u << 0)
162 #define PROCESS_DIRS (1u << 1)
163 #define RECURSIVE (1u << 2)
165 /* Flags that remote_ls passes to callback functions */
166 #define IS_DIR (1u << 0)
171 void (*userFunc)(struct remote_ls_ctx *ls);
176 struct remote_ls_ctx *parent;
179 static void finish_request(struct transfer_request *request);
180 static void release_request(struct transfer_request *request);
182 static void process_response(void *callback_data)
184 struct transfer_request *request =
185 (struct transfer_request *)callback_data;
187 finish_request(request);
190 #ifdef USE_CURL_MULTI
191 static size_t fwrite_sha1_file(void *ptr, size_t eltsize, size_t nmemb,
194 unsigned char expn[4096];
195 size_t size = eltsize * nmemb;
197 struct transfer_request *request = (struct transfer_request *)data;
199 ssize_t retval = xwrite(request->local_fileno,
200 (char *) ptr + posn, size - posn);
204 } while (posn < size);
206 request->stream.avail_in = size;
207 request->stream.next_in = ptr;
209 request->stream.next_out = expn;
210 request->stream.avail_out = sizeof(expn);
211 request->zret = inflate(&request->stream, Z_SYNC_FLUSH);
212 SHA1_Update(&request->c, expn,
213 sizeof(expn) - request->stream.avail_out);
214 } while (request->stream.avail_in && request->zret == Z_OK);
219 static void start_fetch_loose(struct transfer_request *request)
221 char *hex = sha1_to_hex(request->obj->sha1);
223 char prevfile[PATH_MAX];
227 unsigned char prev_buf[PREV_BUF_SIZE];
228 ssize_t prev_read = 0;
230 char range[RANGE_HEADER_SIZE];
231 struct curl_slist *range_header = NULL;
232 struct active_request_slot *slot;
234 filename = sha1_file_name(request->obj->sha1);
235 snprintf(request->filename, sizeof(request->filename), "%s", filename);
236 snprintf(request->tmpfile, sizeof(request->tmpfile),
237 "%s.temp", filename);
239 snprintf(prevfile, sizeof(prevfile), "%s.prev", request->filename);
241 rename(request->tmpfile, prevfile);
242 unlink(request->tmpfile);
244 if (request->local_fileno != -1)
245 error("fd leakage in start: %d", request->local_fileno);
246 request->local_fileno = open(request->tmpfile,
247 O_WRONLY | O_CREAT | O_EXCL, 0666);
248 /* This could have failed due to the "lazy directory creation";
249 * try to mkdir the last path component.
251 if (request->local_fileno < 0 && errno == ENOENT) {
252 char *dir = strrchr(request->tmpfile, '/');
255 mkdir(request->tmpfile, 0777);
258 request->local_fileno = open(request->tmpfile,
259 O_WRONLY | O_CREAT | O_EXCL, 0666);
262 if (request->local_fileno < 0) {
263 request->state = ABORTED;
264 error("Couldn't create temporary file %s for %s: %s",
265 request->tmpfile, request->filename, strerror(errno));
269 memset(&request->stream, 0, sizeof(request->stream));
271 inflateInit(&request->stream);
273 SHA1_Init(&request->c);
275 url = xmalloc(strlen(remote->url) + 50);
276 request->url = xmalloc(strlen(remote->url) + 50);
277 strcpy(url, remote->url);
278 posn = url + strlen(remote->url);
279 strcpy(posn, "objects/");
281 memcpy(posn, hex, 2);
284 strcpy(posn, hex + 2);
285 strcpy(request->url, url);
287 /* If a previous temp file is present, process what was already
289 prevlocal = open(prevfile, O_RDONLY);
290 if (prevlocal != -1) {
292 prev_read = xread(prevlocal, prev_buf, PREV_BUF_SIZE);
294 if (fwrite_sha1_file(prev_buf,
297 request) == prev_read) {
298 prev_posn += prev_read;
303 } while (prev_read > 0);
308 /* Reset inflate/SHA1 if there was an error reading the previous temp
309 file; also rewind to the beginning of the local file. */
310 if (prev_read == -1) {
311 memset(&request->stream, 0, sizeof(request->stream));
312 inflateInit(&request->stream);
313 SHA1_Init(&request->c);
316 lseek(request->local_fileno, 0, SEEK_SET);
317 ftruncate(request->local_fileno, 0);
321 slot = get_active_slot();
322 slot->callback_func = process_response;
323 slot->callback_data = request;
324 request->slot = slot;
326 curl_easy_setopt(slot->curl, CURLOPT_FILE, request);
327 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_sha1_file);
328 curl_easy_setopt(slot->curl, CURLOPT_ERRORBUFFER, request->errorstr);
329 curl_easy_setopt(slot->curl, CURLOPT_URL, url);
330 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, no_pragma_header);
332 /* If we have successfully processed data from a previous fetch
333 attempt, only fetch the data we don't already have. */
337 "Resuming fetch of object %s at byte %ld\n",
339 sprintf(range, "Range: bytes=%ld-", prev_posn);
340 range_header = curl_slist_append(range_header, range);
341 curl_easy_setopt(slot->curl,
342 CURLOPT_HTTPHEADER, range_header);
345 /* Try to get the request started, abort the request on error */
346 request->state = RUN_FETCH_LOOSE;
347 if (!start_active_slot(slot)) {
348 fprintf(stderr, "Unable to start GET request\n");
349 remote->can_update_info_refs = 0;
350 release_request(request);
354 static void start_mkcol(struct transfer_request *request)
356 char *hex = sha1_to_hex(request->obj->sha1);
357 struct active_request_slot *slot;
360 request->url = xmalloc(strlen(remote->url) + 13);
361 strcpy(request->url, remote->url);
362 posn = request->url + strlen(remote->url);
363 strcpy(posn, "objects/");
365 memcpy(posn, hex, 2);
369 slot = get_active_slot();
370 slot->callback_func = process_response;
371 slot->callback_data = request;
372 curl_easy_setopt(slot->curl, CURLOPT_HTTPGET, 1); /* undo PUT setup */
373 curl_easy_setopt(slot->curl, CURLOPT_URL, request->url);
374 curl_easy_setopt(slot->curl, CURLOPT_ERRORBUFFER, request->errorstr);
375 curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, DAV_MKCOL);
376 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_null);
378 if (start_active_slot(slot)) {
379 request->slot = slot;
380 request->state = RUN_MKCOL;
382 request->state = ABORTED;
389 static void start_fetch_packed(struct transfer_request *request)
392 struct packed_git *target;
396 char range[RANGE_HEADER_SIZE];
397 struct curl_slist *range_header = NULL;
399 struct transfer_request *check_request = request_queue_head;
400 struct active_request_slot *slot;
402 target = find_sha1_pack(request->obj->sha1, remote->packs);
404 fprintf(stderr, "Unable to fetch %s, will not be able to update server info refs\n", sha1_to_hex(request->obj->sha1));
405 remote->can_update_info_refs = 0;
406 release_request(request);
410 fprintf(stderr, "Fetching pack %s\n", sha1_to_hex(target->sha1));
411 fprintf(stderr, " which contains %s\n", sha1_to_hex(request->obj->sha1));
413 filename = sha1_pack_name(target->sha1);
414 snprintf(request->filename, sizeof(request->filename), "%s", filename);
415 snprintf(request->tmpfile, sizeof(request->tmpfile),
416 "%s.temp", filename);
418 url = xmalloc(strlen(remote->url) + 64);
419 sprintf(url, "%sobjects/pack/pack-%s.pack",
420 remote->url, sha1_to_hex(target->sha1));
422 /* Make sure there isn't another open request for this pack */
423 while (check_request) {
424 if (check_request->state == RUN_FETCH_PACKED &&
425 !strcmp(check_request->url, url)) {
427 release_request(request);
430 check_request = check_request->next;
433 packfile = fopen(request->tmpfile, "a");
435 fprintf(stderr, "Unable to open local file %s for pack",
437 remote->can_update_info_refs = 0;
442 slot = get_active_slot();
443 slot->callback_func = process_response;
444 slot->callback_data = request;
445 request->slot = slot;
446 request->local_stream = packfile;
447 request->userData = target;
450 curl_easy_setopt(slot->curl, CURLOPT_FILE, packfile);
451 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite);
452 curl_easy_setopt(slot->curl, CURLOPT_URL, url);
453 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, no_pragma_header);
454 slot->local = packfile;
456 /* If there is data present from a previous transfer attempt,
457 resume where it left off */
458 prev_posn = ftell(packfile);
462 "Resuming fetch of pack %s at byte %ld\n",
463 sha1_to_hex(target->sha1), prev_posn);
464 sprintf(range, "Range: bytes=%ld-", prev_posn);
465 range_header = curl_slist_append(range_header, range);
466 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, range_header);
469 /* Try to get the request started, abort the request on error */
470 request->state = RUN_FETCH_PACKED;
471 if (!start_active_slot(slot)) {
472 fprintf(stderr, "Unable to start GET request\n");
473 remote->can_update_info_refs = 0;
474 release_request(request);
478 static void start_put(struct transfer_request *request)
480 char *hex = sha1_to_hex(request->obj->sha1);
481 struct active_request_slot *slot;
483 enum object_type type;
491 unpacked = read_sha1_file(request->obj->sha1, &type, &len);
492 hdrlen = sprintf(hdr, "%s %lu", typename(type), len) + 1;
495 memset(&stream, 0, sizeof(stream));
496 deflateInit(&stream, zlib_compression_level);
497 size = deflateBound(&stream, len + hdrlen);
498 request->buffer.buffer = xmalloc(size);
501 stream.next_out = request->buffer.buffer;
502 stream.avail_out = size;
505 stream.next_in = (void *)hdr;
506 stream.avail_in = hdrlen;
507 while (deflate(&stream, 0) == Z_OK)
510 /* Then the data itself.. */
511 stream.next_in = unpacked;
512 stream.avail_in = len;
513 while (deflate(&stream, Z_FINISH) == Z_OK)
518 request->buffer.size = stream.total_out;
519 request->buffer.posn = 0;
521 request->url = xmalloc(strlen(remote->url) +
522 strlen(request->lock->token) + 51);
523 strcpy(request->url, remote->url);
524 posn = request->url + strlen(remote->url);
525 strcpy(posn, "objects/");
527 memcpy(posn, hex, 2);
530 strcpy(posn, hex + 2);
531 request->dest = xmalloc(strlen(request->url) + 14);
532 sprintf(request->dest, "Destination: %s", request->url);
535 strcpy(posn, request->lock->token);
537 slot = get_active_slot();
538 slot->callback_func = process_response;
539 slot->callback_data = request;
540 curl_easy_setopt(slot->curl, CURLOPT_INFILE, &request->buffer);
541 curl_easy_setopt(slot->curl, CURLOPT_INFILESIZE, request->buffer.size);
542 curl_easy_setopt(slot->curl, CURLOPT_READFUNCTION, fread_buffer);
543 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_null);
544 curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, DAV_PUT);
545 curl_easy_setopt(slot->curl, CURLOPT_UPLOAD, 1);
546 curl_easy_setopt(slot->curl, CURLOPT_PUT, 1);
547 curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 0);
548 curl_easy_setopt(slot->curl, CURLOPT_URL, request->url);
550 if (start_active_slot(slot)) {
551 request->slot = slot;
552 request->state = RUN_PUT;
554 request->state = ABORTED;
560 static void start_move(struct transfer_request *request)
562 struct active_request_slot *slot;
563 struct curl_slist *dav_headers = NULL;
565 slot = get_active_slot();
566 slot->callback_func = process_response;
567 slot->callback_data = request;
568 curl_easy_setopt(slot->curl, CURLOPT_HTTPGET, 1); /* undo PUT setup */
569 curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, DAV_MOVE);
570 dav_headers = curl_slist_append(dav_headers, request->dest);
571 dav_headers = curl_slist_append(dav_headers, "Overwrite: T");
572 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers);
573 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_null);
574 curl_easy_setopt(slot->curl, CURLOPT_URL, request->url);
576 if (start_active_slot(slot)) {
577 request->slot = slot;
578 request->state = RUN_MOVE;
580 request->state = ABORTED;
586 static int refresh_lock(struct remote_lock *lock)
588 struct active_request_slot *slot;
589 struct slot_results results;
591 char timeout_header[25];
592 struct curl_slist *dav_headers = NULL;
595 lock->refreshing = 1;
597 if_header = xmalloc(strlen(lock->token) + 25);
598 sprintf(if_header, "If: (<opaquelocktoken:%s>)", lock->token);
599 sprintf(timeout_header, "Timeout: Second-%ld", lock->timeout);
600 dav_headers = curl_slist_append(dav_headers, if_header);
601 dav_headers = curl_slist_append(dav_headers, timeout_header);
603 slot = get_active_slot();
604 slot->results = &results;
605 curl_easy_setopt(slot->curl, CURLOPT_HTTPGET, 1);
606 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_null);
607 curl_easy_setopt(slot->curl, CURLOPT_URL, lock->url);
608 curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, DAV_LOCK);
609 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers);
611 if (start_active_slot(slot)) {
612 run_active_slot(slot);
613 if (results.curl_result != CURLE_OK) {
614 fprintf(stderr, "LOCK HTTP error %ld\n",
617 lock->start_time = time(NULL);
622 lock->refreshing = 0;
623 curl_slist_free_all(dav_headers);
629 static void check_locks(void)
631 struct remote_lock *lock = remote->locks;
632 time_t current_time = time(NULL);
636 time_remaining = lock->start_time + lock->timeout -
638 if (!lock->refreshing && time_remaining < LOCK_REFRESH) {
639 if (!refresh_lock(lock)) {
641 "Unable to refresh lock for %s\n",
651 static void release_request(struct transfer_request *request)
653 struct transfer_request *entry = request_queue_head;
655 if (request == request_queue_head) {
656 request_queue_head = request->next;
658 while (entry->next != NULL && entry->next != request)
660 if (entry->next == request)
661 entry->next = entry->next->next;
664 if (request->local_fileno != -1)
665 close(request->local_fileno);
666 if (request->local_stream)
667 fclose(request->local_stream);
668 if (request->url != NULL)
673 static void finish_request(struct transfer_request *request)
676 struct packed_git *target;
677 struct packed_git **lst;
679 request->curl_result = request->slot->curl_result;
680 request->http_code = request->slot->http_code;
681 request->slot = NULL;
683 /* Keep locks active */
686 if (request->headers != NULL)
687 curl_slist_free_all(request->headers);
689 /* URL is reused for MOVE after PUT */
690 if (request->state != RUN_PUT) {
695 if (request->state == RUN_MKCOL) {
696 if (request->curl_result == CURLE_OK ||
697 request->http_code == 405) {
698 remote_dir_exists[request->obj->sha1[0]] = 1;
701 fprintf(stderr, "MKCOL %s failed, aborting (%d/%ld)\n",
702 sha1_to_hex(request->obj->sha1),
703 request->curl_result, request->http_code);
704 request->state = ABORTED;
707 } else if (request->state == RUN_PUT) {
708 if (request->curl_result == CURLE_OK) {
711 fprintf(stderr, "PUT %s failed, aborting (%d/%ld)\n",
712 sha1_to_hex(request->obj->sha1),
713 request->curl_result, request->http_code);
714 request->state = ABORTED;
717 } else if (request->state == RUN_MOVE) {
718 if (request->curl_result == CURLE_OK) {
720 fprintf(stderr, " sent %s\n",
721 sha1_to_hex(request->obj->sha1));
722 request->obj->flags |= REMOTE;
723 release_request(request);
725 fprintf(stderr, "MOVE %s failed, aborting (%d/%ld)\n",
726 sha1_to_hex(request->obj->sha1),
727 request->curl_result, request->http_code);
728 request->state = ABORTED;
731 } else if (request->state == RUN_FETCH_LOOSE) {
732 fchmod(request->local_fileno, 0444);
733 close(request->local_fileno); request->local_fileno = -1;
735 if (request->curl_result != CURLE_OK &&
736 request->http_code != 416) {
737 if (stat(request->tmpfile, &st) == 0) {
739 unlink(request->tmpfile);
742 if (request->http_code == 416)
743 fprintf(stderr, "Warning: requested range invalid; we may already have all the data.\n");
745 inflateEnd(&request->stream);
746 SHA1_Final(request->real_sha1, &request->c);
747 if (request->zret != Z_STREAM_END) {
748 unlink(request->tmpfile);
749 } else if (hashcmp(request->obj->sha1, request->real_sha1)) {
750 unlink(request->tmpfile);
756 if (request->rename == 0) {
757 request->obj->flags |= (LOCAL | REMOTE);
762 /* Try fetching packed if necessary */
763 if (request->obj->flags & LOCAL)
764 release_request(request);
766 start_fetch_packed(request);
768 } else if (request->state == RUN_FETCH_PACKED) {
769 if (request->curl_result != CURLE_OK) {
770 fprintf(stderr, "Unable to get pack file %s\n%s",
771 request->url, curl_errorstr);
772 remote->can_update_info_refs = 0;
774 off_t pack_size = ftell(request->local_stream);
776 fclose(request->local_stream);
777 request->local_stream = NULL;
778 if (!move_temp_to_file(request->tmpfile,
779 request->filename)) {
780 target = (struct packed_git *)request->userData;
781 target->pack_size = pack_size;
782 lst = &remote->packs;
783 while (*lst != target)
784 lst = &((*lst)->next);
787 if (!verify_pack(target, 0))
788 install_packed_git(target);
790 remote->can_update_info_refs = 0;
793 release_request(request);
797 #ifdef USE_CURL_MULTI
798 int fill_active_slot(void)
800 struct transfer_request *request = request_queue_head;
805 for (request = request_queue_head; request; request = request->next) {
806 if (request->state == NEED_FETCH) {
807 start_fetch_loose(request);
809 } else if (pushing && request->state == NEED_PUSH) {
810 if (remote_dir_exists[request->obj->sha1[0]] == 1) {
813 start_mkcol(request);
822 static void get_remote_object_list(unsigned char parent);
824 static void add_fetch_request(struct object *obj)
826 struct transfer_request *request;
831 * Don't fetch the object if it's known to exist locally
832 * or is already in the request queue
834 if (remote_dir_exists[obj->sha1[0]] == -1)
835 get_remote_object_list(obj->sha1[0]);
836 if (obj->flags & (LOCAL | FETCHING))
839 obj->flags |= FETCHING;
840 request = xmalloc(sizeof(*request));
843 request->lock = NULL;
844 request->headers = NULL;
845 request->local_fileno = -1;
846 request->local_stream = NULL;
847 request->state = NEED_FETCH;
848 request->next = request_queue_head;
849 request_queue_head = request;
851 #ifdef USE_CURL_MULTI
857 static int add_send_request(struct object *obj, struct remote_lock *lock)
859 struct transfer_request *request = request_queue_head;
860 struct packed_git *target;
862 /* Keep locks active */
866 * Don't push the object if it's known to exist on the remote
867 * or is already in the request queue
869 if (remote_dir_exists[obj->sha1[0]] == -1)
870 get_remote_object_list(obj->sha1[0]);
871 if (obj->flags & (REMOTE | PUSHING))
873 target = find_sha1_pack(obj->sha1, remote->packs);
875 obj->flags |= REMOTE;
879 obj->flags |= PUSHING;
880 request = xmalloc(sizeof(*request));
883 request->lock = lock;
884 request->headers = NULL;
885 request->local_fileno = -1;
886 request->local_stream = NULL;
887 request->state = NEED_PUSH;
888 request->next = request_queue_head;
889 request_queue_head = request;
891 #ifdef USE_CURL_MULTI
899 static int fetch_index(unsigned char *sha1)
901 char *hex = sha1_to_hex(sha1);
904 char tmpfile[PATH_MAX];
906 char range[RANGE_HEADER_SIZE];
907 struct curl_slist *range_header = NULL;
910 struct active_request_slot *slot;
911 struct slot_results results;
913 /* Don't use the index if the pack isn't there */
914 url = xmalloc(strlen(remote->url) + 64);
915 sprintf(url, "%sobjects/pack/pack-%s.pack", remote->url, hex);
916 slot = get_active_slot();
917 slot->results = &results;
918 curl_easy_setopt(slot->curl, CURLOPT_URL, url);
919 curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 1);
920 if (start_active_slot(slot)) {
921 run_active_slot(slot);
922 if (results.curl_result != CURLE_OK) {
924 return error("Unable to verify pack %s is available",
928 return error("Unable to start request");
931 if (has_pack_index(sha1))
935 fprintf(stderr, "Getting index for pack %s\n", hex);
937 sprintf(url, "%sobjects/pack/pack-%s.idx", remote->url, hex);
939 filename = sha1_pack_index_name(sha1);
940 snprintf(tmpfile, sizeof(tmpfile), "%s.temp", filename);
941 indexfile = fopen(tmpfile, "a");
943 return error("Unable to open local file %s for pack index",
946 slot = get_active_slot();
947 slot->results = &results;
948 curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 0);
949 curl_easy_setopt(slot->curl, CURLOPT_HTTPGET, 1);
950 curl_easy_setopt(slot->curl, CURLOPT_FILE, indexfile);
951 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite);
952 curl_easy_setopt(slot->curl, CURLOPT_URL, url);
953 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, no_pragma_header);
954 slot->local = indexfile;
956 /* If there is data present from a previous transfer attempt,
957 resume where it left off */
958 prev_posn = ftell(indexfile);
962 "Resuming fetch of index for pack %s at byte %ld\n",
964 sprintf(range, "Range: bytes=%ld-", prev_posn);
965 range_header = curl_slist_append(range_header, range);
966 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, range_header);
969 if (start_active_slot(slot)) {
970 run_active_slot(slot);
971 if (results.curl_result != CURLE_OK) {
974 return error("Unable to get pack index %s\n%s", url,
980 return error("Unable to start request");
986 return move_temp_to_file(tmpfile, filename);
989 static int setup_index(unsigned char *sha1)
991 struct packed_git *new_pack;
993 if (fetch_index(sha1))
996 new_pack = parse_pack_index(sha1);
997 new_pack->next = remote->packs;
998 remote->packs = new_pack;
1002 static int fetch_indices(void)
1004 unsigned char sha1[20];
1006 struct buffer buffer;
1010 struct active_request_slot *slot;
1011 struct slot_results results;
1013 data = xcalloc(1, 4096);
1016 buffer.buffer = data;
1019 fprintf(stderr, "Getting pack list\n");
1021 url = xmalloc(strlen(remote->url) + 20);
1022 sprintf(url, "%sobjects/info/packs", remote->url);
1024 slot = get_active_slot();
1025 slot->results = &results;
1026 curl_easy_setopt(slot->curl, CURLOPT_FILE, &buffer);
1027 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_buffer);
1028 curl_easy_setopt(slot->curl, CURLOPT_URL, url);
1029 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, NULL);
1030 if (start_active_slot(slot)) {
1031 run_active_slot(slot);
1032 if (results.curl_result != CURLE_OK) {
1033 free(buffer.buffer);
1035 if (results.http_code == 404)
1038 return error("%s", curl_errorstr);
1041 free(buffer.buffer);
1043 return error("Unable to start request");
1047 data = buffer.buffer;
1048 while (i < buffer.posn) {
1052 if (i + 52 < buffer.posn &&
1053 !prefixcmp(data + i, " pack-") &&
1054 !prefixcmp(data + i + 46, ".pack\n")) {
1055 get_sha1_hex(data + i + 6, sha1);
1061 while (data[i] != '\n')
1067 free(buffer.buffer);
1071 static inline int needs_quote(int ch)
1073 if (((ch >= 'A') && (ch <= 'Z'))
1074 || ((ch >= 'a') && (ch <= 'z'))
1075 || ((ch >= '0') && (ch <= '9'))
1083 static inline int hex(int v)
1085 if (v < 10) return '0' + v;
1086 else return 'A' + v - 10;
1089 static char *quote_ref_url(const char *base, const char *ref)
1093 int len, baselen, ch;
1095 baselen = strlen(base);
1097 for (cp = ref; (ch = *cp) != 0; cp++, len++)
1098 if (needs_quote(ch))
1099 len += 2; /* extra two hex plus replacement % */
1100 qref = xmalloc(len);
1101 memcpy(qref, base, baselen);
1102 for (cp = ref, dp = qref + baselen; (ch = *cp) != 0; cp++) {
1103 if (needs_quote(ch)) {
1105 *dp++ = hex((ch >> 4) & 0xF);
1106 *dp++ = hex(ch & 0xF);
1116 int fetch_ref(char *ref, unsigned char *sha1)
1120 struct buffer buffer;
1121 char *base = remote->url;
1122 struct active_request_slot *slot;
1123 struct slot_results results;
1126 buffer.buffer = hex;
1129 url = quote_ref_url(base, ref);
1130 slot = get_active_slot();
1131 slot->results = &results;
1132 curl_easy_setopt(slot->curl, CURLOPT_FILE, &buffer);
1133 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_buffer);
1134 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, NULL);
1135 curl_easy_setopt(slot->curl, CURLOPT_URL, url);
1136 if (start_active_slot(slot)) {
1137 run_active_slot(slot);
1138 if (results.curl_result != CURLE_OK)
1139 return error("Couldn't get %s for %s\n%s",
1140 url, ref, curl_errorstr);
1142 return error("Unable to start request");
1146 get_sha1_hex(hex, sha1);
1150 static void one_remote_object(const char *hex)
1152 unsigned char sha1[20];
1155 if (get_sha1_hex(hex, sha1) != 0)
1158 obj = lookup_object(sha1);
1160 obj = parse_object(sha1);
1162 /* Ignore remote objects that don't exist locally */
1166 obj->flags |= REMOTE;
1167 if (!object_list_contains(objects, obj))
1168 object_list_insert(obj, &objects);
1171 static void handle_lockprop_ctx(struct xml_ctx *ctx, int tag_closed)
1173 int *lock_flags = (int *)ctx->userData;
1176 if (!strcmp(ctx->name, DAV_CTX_LOCKENTRY)) {
1177 if ((*lock_flags & DAV_PROP_LOCKEX) &&
1178 (*lock_flags & DAV_PROP_LOCKWR)) {
1179 *lock_flags |= DAV_LOCK_OK;
1181 *lock_flags &= DAV_LOCK_OK;
1182 } else if (!strcmp(ctx->name, DAV_CTX_LOCKTYPE_WRITE)) {
1183 *lock_flags |= DAV_PROP_LOCKWR;
1184 } else if (!strcmp(ctx->name, DAV_CTX_LOCKTYPE_EXCLUSIVE)) {
1185 *lock_flags |= DAV_PROP_LOCKEX;
1190 static void handle_new_lock_ctx(struct xml_ctx *ctx, int tag_closed)
1192 struct remote_lock *lock = (struct remote_lock *)ctx->userData;
1194 if (tag_closed && ctx->cdata) {
1195 if (!strcmp(ctx->name, DAV_ACTIVELOCK_OWNER)) {
1196 lock->owner = xmalloc(strlen(ctx->cdata) + 1);
1197 strcpy(lock->owner, ctx->cdata);
1198 } else if (!strcmp(ctx->name, DAV_ACTIVELOCK_TIMEOUT)) {
1199 if (!prefixcmp(ctx->cdata, "Second-"))
1201 strtol(ctx->cdata + 7, NULL, 10);
1202 } else if (!strcmp(ctx->name, DAV_ACTIVELOCK_TOKEN)) {
1203 if (!prefixcmp(ctx->cdata, "opaquelocktoken:")) {
1204 lock->token = xmalloc(strlen(ctx->cdata) - 15);
1205 strcpy(lock->token, ctx->cdata + 16);
1211 static void one_remote_ref(char *refname);
1214 xml_start_tag(void *userData, const char *name, const char **atts)
1216 struct xml_ctx *ctx = (struct xml_ctx *)userData;
1217 const char *c = strchr(name, ':');
1225 new_len = strlen(ctx->name) + strlen(c) + 2;
1227 if (new_len > ctx->len) {
1228 ctx->name = xrealloc(ctx->name, new_len);
1231 strcat(ctx->name, ".");
1232 strcat(ctx->name, c);
1237 ctx->userFunc(ctx, 0);
1241 xml_end_tag(void *userData, const char *name)
1243 struct xml_ctx *ctx = (struct xml_ctx *)userData;
1244 const char *c = strchr(name, ':');
1247 ctx->userFunc(ctx, 1);
1254 ep = ctx->name + strlen(ctx->name) - strlen(c) - 1;
1259 xml_cdata(void *userData, const XML_Char *s, int len)
1261 struct xml_ctx *ctx = (struct xml_ctx *)userData;
1263 ctx->cdata = xmalloc(len + 1);
1264 /* NB: 's' is not null-terminated, can not use strlcpy here */
1265 memcpy(ctx->cdata, s, len);
1266 ctx->cdata[len] = '\0';
1269 static struct remote_lock *lock_remote(const char *path, long timeout)
1271 struct active_request_slot *slot;
1272 struct slot_results results;
1273 struct buffer out_buffer;
1274 struct buffer in_buffer;
1279 char timeout_header[25];
1280 struct remote_lock *lock = NULL;
1281 XML_Parser parser = XML_ParserCreate(NULL);
1282 enum XML_Status result;
1283 struct curl_slist *dav_headers = NULL;
1286 url = xmalloc(strlen(remote->url) + strlen(path) + 1);
1287 sprintf(url, "%s%s", remote->url, path);
1289 /* Make sure leading directories exist for the remote ref */
1290 ep = strchr(url + strlen(remote->url) + 1, '/');
1293 slot = get_active_slot();
1294 slot->results = &results;
1295 curl_easy_setopt(slot->curl, CURLOPT_HTTPGET, 1);
1296 curl_easy_setopt(slot->curl, CURLOPT_URL, url);
1297 curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, DAV_MKCOL);
1298 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_null);
1299 if (start_active_slot(slot)) {
1300 run_active_slot(slot);
1301 if (results.curl_result != CURLE_OK &&
1302 results.http_code != 405) {
1304 "Unable to create branch path %s\n",
1310 fprintf(stderr, "Unable to start MKCOL request\n");
1315 ep = strchr(ep + 1, '/');
1318 out_buffer.size = strlen(LOCK_REQUEST) + strlen(git_default_email) - 2;
1319 out_data = xmalloc(out_buffer.size + 1);
1320 snprintf(out_data, out_buffer.size + 1, LOCK_REQUEST, git_default_email);
1321 out_buffer.posn = 0;
1322 out_buffer.buffer = out_data;
1324 in_buffer.size = 4096;
1325 in_data = xmalloc(in_buffer.size);
1327 in_buffer.buffer = in_data;
1329 sprintf(timeout_header, "Timeout: Second-%ld", timeout);
1330 dav_headers = curl_slist_append(dav_headers, timeout_header);
1331 dav_headers = curl_slist_append(dav_headers, "Content-Type: text/xml");
1333 slot = get_active_slot();
1334 slot->results = &results;
1335 curl_easy_setopt(slot->curl, CURLOPT_INFILE, &out_buffer);
1336 curl_easy_setopt(slot->curl, CURLOPT_INFILESIZE, out_buffer.size);
1337 curl_easy_setopt(slot->curl, CURLOPT_READFUNCTION, fread_buffer);
1338 curl_easy_setopt(slot->curl, CURLOPT_FILE, &in_buffer);
1339 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_buffer);
1340 curl_easy_setopt(slot->curl, CURLOPT_URL, url);
1341 curl_easy_setopt(slot->curl, CURLOPT_UPLOAD, 1);
1342 curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, DAV_LOCK);
1343 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers);
1345 lock = xcalloc(1, sizeof(*lock));
1348 if (start_active_slot(slot)) {
1349 run_active_slot(slot);
1350 if (results.curl_result == CURLE_OK) {
1351 ctx.name = xcalloc(10, 1);
1354 ctx.userFunc = handle_new_lock_ctx;
1355 ctx.userData = lock;
1356 XML_SetUserData(parser, &ctx);
1357 XML_SetElementHandler(parser, xml_start_tag,
1359 XML_SetCharacterDataHandler(parser, xml_cdata);
1360 result = XML_Parse(parser, in_buffer.buffer,
1363 if (result != XML_STATUS_OK) {
1364 fprintf(stderr, "XML error: %s\n",
1366 XML_GetErrorCode(parser)));
1371 fprintf(stderr, "Unable to start LOCK request\n");
1374 curl_slist_free_all(dav_headers);
1378 if (lock->token == NULL || lock->timeout <= 0) {
1379 if (lock->token != NULL)
1381 if (lock->owner != NULL)
1388 lock->start_time = time(NULL);
1389 lock->next = remote->locks;
1390 remote->locks = lock;
1396 static int unlock_remote(struct remote_lock *lock)
1398 struct active_request_slot *slot;
1399 struct slot_results results;
1400 struct remote_lock *prev = remote->locks;
1401 char *lock_token_header;
1402 struct curl_slist *dav_headers = NULL;
1405 lock_token_header = xmalloc(strlen(lock->token) + 31);
1406 sprintf(lock_token_header, "Lock-Token: <opaquelocktoken:%s>",
1408 dav_headers = curl_slist_append(dav_headers, lock_token_header);
1410 slot = get_active_slot();
1411 slot->results = &results;
1412 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_null);
1413 curl_easy_setopt(slot->curl, CURLOPT_URL, lock->url);
1414 curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, DAV_UNLOCK);
1415 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers);
1417 if (start_active_slot(slot)) {
1418 run_active_slot(slot);
1419 if (results.curl_result == CURLE_OK)
1422 fprintf(stderr, "UNLOCK HTTP error %ld\n",
1425 fprintf(stderr, "Unable to start UNLOCK request\n");
1428 curl_slist_free_all(dav_headers);
1429 free(lock_token_header);
1431 if (remote->locks == lock) {
1432 remote->locks = lock->next;
1434 while (prev && prev->next != lock)
1437 prev->next = prev->next->next;
1440 if (lock->owner != NULL)
1449 static void remote_ls(const char *path, int flags,
1450 void (*userFunc)(struct remote_ls_ctx *ls),
1453 static void process_ls_object(struct remote_ls_ctx *ls)
1455 unsigned int *parent = (unsigned int *)ls->userData;
1456 char *path = ls->dentry_name;
1459 if (!strcmp(ls->path, ls->dentry_name) && (ls->flags & IS_DIR)) {
1460 remote_dir_exists[*parent] = 1;
1464 if (strlen(path) != 49)
1467 obj_hex = xmalloc(strlen(path));
1468 /* NB: path is not null-terminated, can not use strlcpy here */
1469 memcpy(obj_hex, path, 2);
1470 strcpy(obj_hex + 2, path + 3);
1471 one_remote_object(obj_hex);
1475 static void process_ls_ref(struct remote_ls_ctx *ls)
1477 if (!strcmp(ls->path, ls->dentry_name) && (ls->dentry_flags & IS_DIR)) {
1478 fprintf(stderr, " %s\n", ls->dentry_name);
1482 if (!(ls->dentry_flags & IS_DIR))
1483 one_remote_ref(ls->dentry_name);
1486 static void handle_remote_ls_ctx(struct xml_ctx *ctx, int tag_closed)
1488 struct remote_ls_ctx *ls = (struct remote_ls_ctx *)ctx->userData;
1491 if (!strcmp(ctx->name, DAV_PROPFIND_RESP) && ls->dentry_name) {
1492 if (ls->dentry_flags & IS_DIR) {
1493 if (ls->flags & PROCESS_DIRS) {
1496 if (strcmp(ls->dentry_name, ls->path) &&
1497 ls->flags & RECURSIVE) {
1498 remote_ls(ls->dentry_name,
1503 } else if (ls->flags & PROCESS_FILES) {
1506 } else if (!strcmp(ctx->name, DAV_PROPFIND_NAME) && ctx->cdata) {
1507 ls->dentry_name = xmalloc(strlen(ctx->cdata) -
1508 remote->path_len + 1);
1509 strcpy(ls->dentry_name, ctx->cdata + remote->path_len);
1510 } else if (!strcmp(ctx->name, DAV_PROPFIND_COLLECTION)) {
1511 ls->dentry_flags |= IS_DIR;
1513 } else if (!strcmp(ctx->name, DAV_PROPFIND_RESP)) {
1514 free(ls->dentry_name);
1515 ls->dentry_name = NULL;
1516 ls->dentry_flags = 0;
1520 static void remote_ls(const char *path, int flags,
1521 void (*userFunc)(struct remote_ls_ctx *ls),
1524 char *url = xmalloc(strlen(remote->url) + strlen(path) + 1);
1525 struct active_request_slot *slot;
1526 struct slot_results results;
1527 struct buffer in_buffer;
1528 struct buffer out_buffer;
1531 XML_Parser parser = XML_ParserCreate(NULL);
1532 enum XML_Status result;
1533 struct curl_slist *dav_headers = NULL;
1535 struct remote_ls_ctx ls;
1538 ls.path = xstrdup(path);
1539 ls.dentry_name = NULL;
1540 ls.dentry_flags = 0;
1541 ls.userData = userData;
1542 ls.userFunc = userFunc;
1544 sprintf(url, "%s%s", remote->url, path);
1546 out_buffer.size = strlen(PROPFIND_ALL_REQUEST);
1547 out_data = xmalloc(out_buffer.size + 1);
1548 snprintf(out_data, out_buffer.size + 1, PROPFIND_ALL_REQUEST);
1549 out_buffer.posn = 0;
1550 out_buffer.buffer = out_data;
1552 in_buffer.size = 4096;
1553 in_data = xmalloc(in_buffer.size);
1555 in_buffer.buffer = in_data;
1557 dav_headers = curl_slist_append(dav_headers, "Depth: 1");
1558 dav_headers = curl_slist_append(dav_headers, "Content-Type: text/xml");
1560 slot = get_active_slot();
1561 slot->results = &results;
1562 curl_easy_setopt(slot->curl, CURLOPT_INFILE, &out_buffer);
1563 curl_easy_setopt(slot->curl, CURLOPT_INFILESIZE, out_buffer.size);
1564 curl_easy_setopt(slot->curl, CURLOPT_READFUNCTION, fread_buffer);
1565 curl_easy_setopt(slot->curl, CURLOPT_FILE, &in_buffer);
1566 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_buffer);
1567 curl_easy_setopt(slot->curl, CURLOPT_URL, url);
1568 curl_easy_setopt(slot->curl, CURLOPT_UPLOAD, 1);
1569 curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, DAV_PROPFIND);
1570 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers);
1572 if (start_active_slot(slot)) {
1573 run_active_slot(slot);
1574 if (results.curl_result == CURLE_OK) {
1575 ctx.name = xcalloc(10, 1);
1578 ctx.userFunc = handle_remote_ls_ctx;
1580 XML_SetUserData(parser, &ctx);
1581 XML_SetElementHandler(parser, xml_start_tag,
1583 XML_SetCharacterDataHandler(parser, xml_cdata);
1584 result = XML_Parse(parser, in_buffer.buffer,
1588 if (result != XML_STATUS_OK) {
1589 fprintf(stderr, "XML error: %s\n",
1591 XML_GetErrorCode(parser)));
1595 fprintf(stderr, "Unable to start PROPFIND request\n");
1601 free(in_buffer.buffer);
1602 curl_slist_free_all(dav_headers);
1605 static void get_remote_object_list(unsigned char parent)
1607 char path[] = "objects/XX/";
1608 static const char hex[] = "0123456789abcdef";
1609 unsigned int val = parent;
1611 path[8] = hex[val >> 4];
1612 path[9] = hex[val & 0xf];
1613 remote_dir_exists[val] = 0;
1614 remote_ls(path, (PROCESS_FILES | PROCESS_DIRS),
1615 process_ls_object, &val);
1618 static int locking_available(void)
1620 struct active_request_slot *slot;
1621 struct slot_results results;
1622 struct buffer in_buffer;
1623 struct buffer out_buffer;
1626 XML_Parser parser = XML_ParserCreate(NULL);
1627 enum XML_Status result;
1628 struct curl_slist *dav_headers = NULL;
1633 strlen(PROPFIND_SUPPORTEDLOCK_REQUEST) +
1634 strlen(remote->url) - 2;
1635 out_data = xmalloc(out_buffer.size + 1);
1636 snprintf(out_data, out_buffer.size + 1,
1637 PROPFIND_SUPPORTEDLOCK_REQUEST, remote->url);
1638 out_buffer.posn = 0;
1639 out_buffer.buffer = out_data;
1641 in_buffer.size = 4096;
1642 in_data = xmalloc(in_buffer.size);
1644 in_buffer.buffer = in_data;
1646 dav_headers = curl_slist_append(dav_headers, "Depth: 0");
1647 dav_headers = curl_slist_append(dav_headers, "Content-Type: text/xml");
1649 slot = get_active_slot();
1650 slot->results = &results;
1651 curl_easy_setopt(slot->curl, CURLOPT_INFILE, &out_buffer);
1652 curl_easy_setopt(slot->curl, CURLOPT_INFILESIZE, out_buffer.size);
1653 curl_easy_setopt(slot->curl, CURLOPT_READFUNCTION, fread_buffer);
1654 curl_easy_setopt(slot->curl, CURLOPT_FILE, &in_buffer);
1655 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_buffer);
1656 curl_easy_setopt(slot->curl, CURLOPT_URL, remote->url);
1657 curl_easy_setopt(slot->curl, CURLOPT_UPLOAD, 1);
1658 curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, DAV_PROPFIND);
1659 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers);
1661 if (start_active_slot(slot)) {
1662 run_active_slot(slot);
1663 if (results.curl_result == CURLE_OK) {
1664 ctx.name = xcalloc(10, 1);
1667 ctx.userFunc = handle_lockprop_ctx;
1668 ctx.userData = &lock_flags;
1669 XML_SetUserData(parser, &ctx);
1670 XML_SetElementHandler(parser, xml_start_tag,
1672 result = XML_Parse(parser, in_buffer.buffer,
1676 if (result != XML_STATUS_OK) {
1677 fprintf(stderr, "XML error: %s\n",
1679 XML_GetErrorCode(parser)));
1684 fprintf(stderr, "Unable to start PROPFIND request\n");
1688 free(in_buffer.buffer);
1689 curl_slist_free_all(dav_headers);
1694 static struct object_list **add_one_object(struct object *obj, struct object_list **p)
1696 struct object_list *entry = xmalloc(sizeof(struct object_list));
1700 return &entry->next;
1703 static struct object_list **process_blob(struct blob *blob,
1704 struct object_list **p,
1705 struct name_path *path,
1708 struct object *obj = &blob->object;
1710 obj->flags |= LOCAL;
1712 if (obj->flags & (UNINTERESTING | SEEN))
1716 return add_one_object(obj, p);
1719 static struct object_list **process_tree(struct tree *tree,
1720 struct object_list **p,
1721 struct name_path *path,
1724 struct object *obj = &tree->object;
1725 struct tree_desc desc;
1726 struct name_entry entry;
1727 struct name_path me;
1729 obj->flags |= LOCAL;
1731 if (obj->flags & (UNINTERESTING | SEEN))
1733 if (parse_tree(tree) < 0)
1734 die("bad tree object %s", sha1_to_hex(obj->sha1));
1737 name = xstrdup(name);
1738 p = add_one_object(obj, p);
1741 me.elem_len = strlen(name);
1743 init_tree_desc(&desc, tree->buffer, tree->size);
1745 while (tree_entry(&desc, &entry)) {
1746 if (S_ISDIR(entry.mode))
1747 p = process_tree(lookup_tree(entry.sha1), p, &me, name);
1749 p = process_blob(lookup_blob(entry.sha1), p, &me, name);
1752 tree->buffer = NULL;
1756 static int get_delta(struct rev_info *revs, struct remote_lock *lock)
1759 struct commit *commit;
1760 struct object_list **p = &objects;
1763 while ((commit = get_revision(revs)) != NULL) {
1764 p = process_tree(commit->tree, p, NULL, "");
1765 commit->object.flags |= LOCAL;
1766 if (!(commit->object.flags & UNINTERESTING))
1767 count += add_send_request(&commit->object, lock);
1770 for (i = 0; i < revs->pending.nr; i++) {
1771 struct object_array_entry *entry = revs->pending.objects + i;
1772 struct object *obj = entry->item;
1773 const char *name = entry->name;
1775 if (obj->flags & (UNINTERESTING | SEEN))
1777 if (obj->type == OBJ_TAG) {
1779 p = add_one_object(obj, p);
1782 if (obj->type == OBJ_TREE) {
1783 p = process_tree((struct tree *)obj, p, NULL, name);
1786 if (obj->type == OBJ_BLOB) {
1787 p = process_blob((struct blob *)obj, p, NULL, name);
1790 die("unknown pending object %s (%s)", sha1_to_hex(obj->sha1), name);
1794 if (!(objects->item->flags & UNINTERESTING))
1795 count += add_send_request(objects->item, lock);
1796 objects = objects->next;
1802 static int update_remote(unsigned char *sha1, struct remote_lock *lock)
1804 struct active_request_slot *slot;
1805 struct slot_results results;
1808 struct buffer out_buffer;
1809 struct curl_slist *dav_headers = NULL;
1812 if_header = xmalloc(strlen(lock->token) + 25);
1813 sprintf(if_header, "If: (<opaquelocktoken:%s>)", lock->token);
1814 dav_headers = curl_slist_append(dav_headers, if_header);
1816 out_buffer.size = 41;
1817 out_data = xmalloc(out_buffer.size + 1);
1818 i = snprintf(out_data, out_buffer.size + 1, "%s\n", sha1_to_hex(sha1));
1819 if (i != out_buffer.size) {
1820 fprintf(stderr, "Unable to initialize PUT request body\n");
1823 out_buffer.posn = 0;
1824 out_buffer.buffer = out_data;
1826 slot = get_active_slot();
1827 slot->results = &results;
1828 curl_easy_setopt(slot->curl, CURLOPT_INFILE, &out_buffer);
1829 curl_easy_setopt(slot->curl, CURLOPT_INFILESIZE, out_buffer.size);
1830 curl_easy_setopt(slot->curl, CURLOPT_READFUNCTION, fread_buffer);
1831 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_null);
1832 curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, DAV_PUT);
1833 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers);
1834 curl_easy_setopt(slot->curl, CURLOPT_UPLOAD, 1);
1835 curl_easy_setopt(slot->curl, CURLOPT_PUT, 1);
1836 curl_easy_setopt(slot->curl, CURLOPT_URL, lock->url);
1838 if (start_active_slot(slot)) {
1839 run_active_slot(slot);
1842 if (results.curl_result != CURLE_OK) {
1844 "PUT error: curl result=%d, HTTP code=%ld\n",
1845 results.curl_result, results.http_code);
1846 /* We should attempt recovery? */
1852 fprintf(stderr, "Unable to start PUT request\n");
1859 static struct ref *local_refs, **local_tail;
1860 static struct ref *remote_refs, **remote_tail;
1862 static int one_local_ref(const char *refname, const unsigned char *sha1, int flag, void *cb_data)
1865 int len = strlen(refname) + 1;
1866 ref = xcalloc(1, sizeof(*ref) + len);
1867 hashcpy(ref->new_sha1, sha1);
1868 memcpy(ref->name, refname, len);
1870 local_tail = &ref->next;
1874 static void one_remote_ref(char *refname)
1877 unsigned char remote_sha1[20];
1879 int len = strlen(refname) + 1;
1881 if (fetch_ref(refname, remote_sha1) != 0) {
1883 "Unable to fetch ref %s from %s\n",
1884 refname, remote->url);
1889 * Fetch a copy of the object if it doesn't exist locally - it
1890 * may be required for updating server info later.
1892 if (remote->can_update_info_refs && !has_sha1_file(remote_sha1)) {
1893 obj = lookup_unknown_object(remote_sha1);
1895 fprintf(stderr, " fetch %s for %s\n",
1896 sha1_to_hex(remote_sha1), refname);
1897 add_fetch_request(obj);
1901 ref = xcalloc(1, sizeof(*ref) + len);
1902 hashcpy(ref->old_sha1, remote_sha1);
1903 memcpy(ref->name, refname, len);
1905 remote_tail = &ref->next;
1908 static void get_local_heads(void)
1910 local_tail = &local_refs;
1911 for_each_ref(one_local_ref, NULL);
1914 static void get_dav_remote_heads(void)
1916 remote_tail = &remote_refs;
1917 remote_ls("refs/", (PROCESS_FILES | PROCESS_DIRS | RECURSIVE), process_ls_ref, NULL);
1920 static int is_zero_sha1(const unsigned char *sha1)
1924 for (i = 0; i < 20; i++) {
1931 static void unmark_and_free(struct commit_list *list, unsigned int mark)
1934 struct commit_list *temp = list;
1935 temp->item->object.flags &= ~mark;
1941 static int ref_newer(const unsigned char *new_sha1,
1942 const unsigned char *old_sha1)
1945 struct commit *old, *new;
1946 struct commit_list *list, *used;
1949 /* Both new and old must be commit-ish and new is descendant of
1950 * old. Otherwise we require --force.
1952 o = deref_tag(parse_object(old_sha1), NULL, 0);
1953 if (!o || o->type != OBJ_COMMIT)
1955 old = (struct commit *) o;
1957 o = deref_tag(parse_object(new_sha1), NULL, 0);
1958 if (!o || o->type != OBJ_COMMIT)
1960 new = (struct commit *) o;
1962 if (parse_commit(new) < 0)
1966 commit_list_insert(new, &list);
1968 new = pop_most_recent_commit(&list, TMP_MARK);
1969 commit_list_insert(new, &used);
1975 unmark_and_free(list, TMP_MARK);
1976 unmark_and_free(used, TMP_MARK);
1980 static void mark_edge_parents_uninteresting(struct commit *commit)
1982 struct commit_list *parents;
1984 for (parents = commit->parents; parents; parents = parents->next) {
1985 struct commit *parent = parents->item;
1986 if (!(parent->object.flags & UNINTERESTING))
1988 mark_tree_uninteresting(parent->tree);
1992 static void mark_edges_uninteresting(struct commit_list *list)
1994 for ( ; list; list = list->next) {
1995 struct commit *commit = list->item;
1997 if (commit->object.flags & UNINTERESTING) {
1998 mark_tree_uninteresting(commit->tree);
2001 mark_edge_parents_uninteresting(commit);
2005 static void add_remote_info_ref(struct remote_ls_ctx *ls)
2007 struct buffer *buf = (struct buffer *)ls->userData;
2008 unsigned char remote_sha1[20];
2013 if (fetch_ref(ls->dentry_name, remote_sha1) != 0) {
2015 "Unable to fetch ref %s from %s\n",
2016 ls->dentry_name, remote->url);
2021 o = parse_object(remote_sha1);
2024 "Unable to parse object %s for remote ref %s\n",
2025 sha1_to_hex(remote_sha1), ls->dentry_name);
2030 len = strlen(ls->dentry_name) + 42;
2031 ref_info = xcalloc(len + 1, 1);
2032 sprintf(ref_info, "%s %s\n",
2033 sha1_to_hex(remote_sha1), ls->dentry_name);
2034 fwrite_buffer(ref_info, 1, len, buf);
2037 if (o->type == OBJ_TAG) {
2038 o = deref_tag(o, ls->dentry_name, 0);
2040 len = strlen(ls->dentry_name) + 45;
2041 ref_info = xcalloc(len + 1, 1);
2042 sprintf(ref_info, "%s %s^{}\n",
2043 sha1_to_hex(o->sha1), ls->dentry_name);
2044 fwrite_buffer(ref_info, 1, len, buf);
2050 static void update_remote_info_refs(struct remote_lock *lock)
2052 struct buffer buffer;
2053 struct active_request_slot *slot;
2054 struct slot_results results;
2056 struct curl_slist *dav_headers = NULL;
2058 buffer.buffer = xcalloc(1, 4096);
2061 remote_ls("refs/", (PROCESS_FILES | RECURSIVE),
2062 add_remote_info_ref, &buffer);
2064 if_header = xmalloc(strlen(lock->token) + 25);
2065 sprintf(if_header, "If: (<opaquelocktoken:%s>)", lock->token);
2066 dav_headers = curl_slist_append(dav_headers, if_header);
2068 slot = get_active_slot();
2069 slot->results = &results;
2070 curl_easy_setopt(slot->curl, CURLOPT_INFILE, &buffer);
2071 curl_easy_setopt(slot->curl, CURLOPT_INFILESIZE, buffer.posn);
2072 curl_easy_setopt(slot->curl, CURLOPT_READFUNCTION, fread_buffer);
2073 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_null);
2074 curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, DAV_PUT);
2075 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers);
2076 curl_easy_setopt(slot->curl, CURLOPT_UPLOAD, 1);
2077 curl_easy_setopt(slot->curl, CURLOPT_PUT, 1);
2078 curl_easy_setopt(slot->curl, CURLOPT_URL, lock->url);
2082 if (start_active_slot(slot)) {
2083 run_active_slot(slot);
2084 if (results.curl_result != CURLE_OK) {
2086 "PUT error: curl result=%d, HTTP code=%ld\n",
2087 results.curl_result, results.http_code);
2092 free(buffer.buffer);
2095 static int remote_exists(const char *path)
2097 char *url = xmalloc(strlen(remote->url) + strlen(path) + 1);
2098 struct active_request_slot *slot;
2099 struct slot_results results;
2101 sprintf(url, "%s%s", remote->url, path);
2103 slot = get_active_slot();
2104 slot->results = &results;
2105 curl_easy_setopt(slot->curl, CURLOPT_URL, url);
2106 curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 1);
2108 if (start_active_slot(slot)) {
2109 run_active_slot(slot);
2110 if (results.http_code == 404)
2112 else if (results.curl_result == CURLE_OK)
2115 fprintf(stderr, "HEAD HTTP error %ld\n", results.http_code);
2117 fprintf(stderr, "Unable to start HEAD request\n");
2123 static void fetch_symref(const char *path, char **symref, unsigned char *sha1)
2126 struct buffer buffer;
2127 struct active_request_slot *slot;
2128 struct slot_results results;
2130 url = xmalloc(strlen(remote->url) + strlen(path) + 1);
2131 sprintf(url, "%s%s", remote->url, path);
2135 buffer.buffer = xmalloc(buffer.size);
2137 slot = get_active_slot();
2138 slot->results = &results;
2139 curl_easy_setopt(slot->curl, CURLOPT_FILE, &buffer);
2140 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_buffer);
2141 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, NULL);
2142 curl_easy_setopt(slot->curl, CURLOPT_URL, url);
2143 if (start_active_slot(slot)) {
2144 run_active_slot(slot);
2145 if (results.curl_result != CURLE_OK) {
2146 die("Couldn't get %s for remote symref\n%s",
2147 url, curl_errorstr);
2150 die("Unable to start remote symref request");
2154 if (*symref != NULL)
2159 if (buffer.posn == 0)
2162 /* If it's a symref, set the refname; otherwise try for a sha1 */
2163 if (!prefixcmp((char *)buffer.buffer, "ref: ")) {
2164 *symref = xmalloc(buffer.posn - 5);
2165 memcpy(*symref, (char *)buffer.buffer + 5, buffer.posn - 6);
2166 (*symref)[buffer.posn - 6] = '\0';
2168 get_sha1_hex(buffer.buffer, sha1);
2171 free(buffer.buffer);
2174 static int verify_merge_base(unsigned char *head_sha1, unsigned char *branch_sha1)
2176 struct commit *head = lookup_commit(head_sha1);
2177 struct commit *branch = lookup_commit(branch_sha1);
2178 struct commit_list *merge_bases = get_merge_bases(head, branch, 1);
2180 return (merge_bases && !merge_bases->next && merge_bases->item == branch);
2183 static int delete_remote_branch(char *pattern, int force)
2185 struct ref *refs = remote_refs;
2186 struct ref *remote_ref = NULL;
2187 unsigned char head_sha1[20];
2188 char *symref = NULL;
2190 int patlen = strlen(pattern);
2192 struct active_request_slot *slot;
2193 struct slot_results results;
2196 /* Find the remote branch(es) matching the specified branch name */
2197 for (match = 0; refs; refs = refs->next) {
2198 char *name = refs->name;
2199 int namelen = strlen(name);
2200 if (namelen < patlen ||
2201 memcmp(name + namelen - patlen, pattern, patlen))
2203 if (namelen != patlen && name[namelen - patlen - 1] != '/')
2209 return error("No remote branch matches %s", pattern);
2211 return error("More than one remote branch matches %s",
2215 * Remote HEAD must be a symref (not exactly foolproof; a remote
2216 * symlink to a symref will look like a symref)
2218 fetch_symref("HEAD", &symref, head_sha1);
2220 return error("Remote HEAD is not a symref");
2222 /* Remote branch must not be the remote HEAD */
2223 for (i=0; symref && i<MAXDEPTH; i++) {
2224 if (!strcmp(remote_ref->name, symref))
2225 return error("Remote branch %s is the current HEAD",
2227 fetch_symref(symref, &symref, head_sha1);
2230 /* Run extra sanity checks if delete is not forced */
2232 /* Remote HEAD must resolve to a known object */
2234 return error("Remote HEAD symrefs too deep");
2235 if (is_zero_sha1(head_sha1))
2236 return error("Unable to resolve remote HEAD");
2237 if (!has_sha1_file(head_sha1))
2238 return error("Remote HEAD resolves to object %s\nwhich does not exist locally, perhaps you need to fetch?", sha1_to_hex(head_sha1));
2240 /* Remote branch must resolve to a known object */
2241 if (is_zero_sha1(remote_ref->old_sha1))
2242 return error("Unable to resolve remote branch %s",
2244 if (!has_sha1_file(remote_ref->old_sha1))
2245 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));
2247 /* Remote branch must be an ancestor of remote HEAD */
2248 if (!verify_merge_base(head_sha1, remote_ref->old_sha1)) {
2249 return error("The branch '%s' is not a strict subset of your current HEAD.\nIf you are sure you want to delete it, run:\n\t'git http-push -D %s %s'", remote_ref->name, remote->url, pattern);
2253 /* Send delete request */
2254 fprintf(stderr, "Removing remote branch '%s'\n", remote_ref->name);
2255 url = xmalloc(strlen(remote->url) + strlen(remote_ref->name) + 1);
2256 sprintf(url, "%s%s", remote->url, remote_ref->name);
2257 slot = get_active_slot();
2258 slot->results = &results;
2259 curl_easy_setopt(slot->curl, CURLOPT_HTTPGET, 1);
2260 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_null);
2261 curl_easy_setopt(slot->curl, CURLOPT_URL, url);
2262 curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, DAV_DELETE);
2263 if (start_active_slot(slot)) {
2264 run_active_slot(slot);
2266 if (results.curl_result != CURLE_OK)
2267 return error("DELETE request failed (%d/%ld)\n",
2268 results.curl_result, results.http_code);
2271 return error("Unable to start DELETE request");
2277 int main(int argc, char **argv)
2279 struct transfer_request *request;
2280 struct transfer_request *next_request;
2282 char **refspec = NULL;
2283 struct remote_lock *ref_lock = NULL;
2284 struct remote_lock *info_ref_lock = NULL;
2285 struct rev_info revs;
2286 int delete_branch = 0;
2287 int force_delete = 0;
2288 int objects_to_send;
2294 setup_git_directory();
2296 remote = xcalloc(sizeof(*remote), 1);
2299 for (i = 1; i < argc; i++, argv++) {
2303 if (!strcmp(arg, "--all")) {
2307 if (!strcmp(arg, "--force")) {
2311 if (!strcmp(arg, "--verbose")) {
2315 if (!strcmp(arg, "-d")) {
2319 if (!strcmp(arg, "-D")) {
2326 char *path = strstr(arg, "//");
2329 path = strchr(path+2, '/');
2331 remote->path_len = strlen(path);
2336 nr_refspec = argc - i;
2341 usage(http_push_usage);
2343 if (delete_branch && nr_refspec != 1)
2344 die("You must specify only one branch name when deleting a remote branch");
2346 memset(remote_dir_exists, -1, 256);
2350 no_pragma_header = curl_slist_append(no_pragma_header, "Pragma:");
2351 default_headers = curl_slist_append(default_headers, "Range:");
2352 default_headers = curl_slist_append(default_headers, "Destination:");
2353 default_headers = curl_slist_append(default_headers, "If:");
2354 default_headers = curl_slist_append(default_headers,
2355 "Pragma: no-cache");
2357 /* Verify DAV compliance/lock support */
2358 if (!locking_available()) {
2359 fprintf(stderr, "Error: no DAV locking support on remote repo %s\n", remote->url);
2364 /* Check whether the remote has server info files */
2365 remote->can_update_info_refs = 0;
2366 remote->has_info_refs = remote_exists("info/refs");
2367 remote->has_info_packs = remote_exists("objects/info/packs");
2368 if (remote->has_info_refs) {
2369 info_ref_lock = lock_remote("info/refs", LOCK_TIME);
2371 remote->can_update_info_refs = 1;
2373 if (remote->has_info_packs)
2376 /* Get a list of all local and remote heads to validate refspecs */
2378 fprintf(stderr, "Fetching remote heads...\n");
2379 get_dav_remote_heads();
2381 /* Remove a remote branch if -d or -D was specified */
2382 if (delete_branch) {
2383 if (delete_remote_branch(refspec[0], force_delete) == -1)
2384 fprintf(stderr, "Unable to delete remote branch %s\n",
2391 remote_tail = &remote_refs;
2392 if (match_refs(local_refs, remote_refs, &remote_tail,
2393 nr_refspec, refspec, push_all))
2396 fprintf(stderr, "No refs in common and none specified; doing nothing.\n");
2401 for (ref = remote_refs; ref; ref = ref->next) {
2402 char old_hex[60], *new_hex;
2403 const char *commit_argv[4];
2405 char *new_sha1_hex, *old_sha1_hex;
2409 if (!hashcmp(ref->old_sha1, ref->peer_ref->new_sha1)) {
2410 if (push_verbosely || 1)
2411 fprintf(stderr, "'%s': up-to-date\n", ref->name);
2416 !is_zero_sha1(ref->old_sha1) &&
2418 if (!has_sha1_file(ref->old_sha1) ||
2419 !ref_newer(ref->peer_ref->new_sha1,
2421 /* We do not have the remote ref, or
2422 * we know that the remote ref is not
2423 * an ancestor of what we are trying to
2424 * push. Either way this can be losing
2425 * commits at the remote end and likely
2426 * we were not up to date to begin with.
2428 error("remote '%s' is not a strict "
2429 "subset of local ref '%s'. "
2430 "maybe you are not up-to-date and "
2431 "need to pull first?",
2433 ref->peer_ref->name);
2438 hashcpy(ref->new_sha1, ref->peer_ref->new_sha1);
2439 if (is_zero_sha1(ref->new_sha1)) {
2440 error("cannot happen anymore");
2445 strcpy(old_hex, sha1_to_hex(ref->old_sha1));
2446 new_hex = sha1_to_hex(ref->new_sha1);
2448 fprintf(stderr, "updating '%s'", ref->name);
2449 if (strcmp(ref->name, ref->peer_ref->name))
2450 fprintf(stderr, " using '%s'", ref->peer_ref->name);
2451 fprintf(stderr, "\n from %s\n to %s\n", old_hex, new_hex);
2454 /* Lock remote branch ref */
2455 ref_lock = lock_remote(ref->name, LOCK_TIME);
2456 if (ref_lock == NULL) {
2457 fprintf(stderr, "Unable to lock remote branch %s\n",
2463 /* Set up revision info for this refspec */
2465 new_sha1_hex = xstrdup(sha1_to_hex(ref->new_sha1));
2466 old_sha1_hex = NULL;
2467 commit_argv[1] = "--objects";
2468 commit_argv[2] = new_sha1_hex;
2469 if (!push_all && !is_zero_sha1(ref->old_sha1)) {
2470 old_sha1_hex = xmalloc(42);
2471 sprintf(old_sha1_hex, "^%s",
2472 sha1_to_hex(ref->old_sha1));
2473 commit_argv[3] = old_sha1_hex;
2476 init_revisions(&revs, setup_git_directory());
2477 setup_revisions(commit_argc, commit_argv, &revs, NULL);
2481 commit_argv[1] = NULL;
2484 /* Generate a list of objects that need to be pushed */
2486 prepare_revision_walk(&revs);
2487 mark_edges_uninteresting(revs.commits);
2488 objects_to_send = get_delta(&revs, ref_lock);
2489 finish_all_active_slots();
2491 /* Push missing objects to remote, this would be a
2492 convenient time to pack them first if appropriate. */
2494 if (objects_to_send)
2495 fprintf(stderr, " sending %d objects\n",
2497 #ifdef USE_CURL_MULTI
2498 fill_active_slots();
2500 finish_all_active_slots();
2502 /* Update the remote branch if all went well */
2503 if (aborted || !update_remote(ref->new_sha1, ref_lock)) {
2510 fprintf(stderr, " done\n");
2511 unlock_remote(ref_lock);
2515 /* Update remote server info if appropriate */
2516 if (remote->has_info_refs && new_refs) {
2517 if (info_ref_lock && remote->can_update_info_refs) {
2518 fprintf(stderr, "Updating remote server info\n");
2519 update_remote_info_refs(info_ref_lock);
2521 fprintf(stderr, "Unable to update server info\n");
2525 unlock_remote(info_ref_lock);
2530 curl_slist_free_all(no_pragma_header);
2531 curl_slist_free_all(default_headers);
2535 request = request_queue_head;
2536 while (request != NULL) {
2537 next_request = request->next;
2538 release_request(request);
2539 request = next_request;