3 #include "run-command.h"
8 #include "fetch-pack.h"
17 * We copy packed-refs and refs/ into a temporary file, then read the
18 * loose refs recursively (sorting whenever possible), and then inserting
19 * those packed refs that are not yet in the list (not validating, but
20 * assuming that the file is sorted).
22 * Appears refactoring this from refs.c is too cumbersome.
25 static int str_cmp(const void *a, const void *b)
30 return strcmp(s1, s2);
33 /* path->buf + name_offset is expected to point to "refs/" */
35 static int read_loose_refs(struct strbuf *path, int name_offset,
38 DIR *dir = opendir(path->buf);
49 memset (&list, 0, sizeof(list));
51 while ((de = readdir(dir))) {
52 if (de->d_name[0] == '.' && (de->d_name[1] == '\0' ||
53 (de->d_name[1] == '.' &&
54 de->d_name[2] == '\0')))
56 ALLOC_GROW(list.entries, list.nr + 1, list.alloc);
57 list.entries[list.nr++] = xstrdup(de->d_name);
63 qsort(list.entries, list.nr, sizeof(char *), str_cmp);
66 strbuf_addch(path, '/');
68 for (i = 0; i < list.nr; i++, strbuf_setlen(path, pathlen + 1)) {
69 strbuf_addstr(path, list.entries[i]);
70 if (read_loose_refs(path, name_offset, tail)) {
71 int fd = open(path->buf, O_RDONLY);
77 next = alloc_ref(path->len - name_offset + 1);
78 if (read_in_full(fd, buffer, 40) != 40 ||
79 get_sha1_hex(buffer, next->old_sha1)) {
85 strcpy(next->name, path->buf + name_offset);
90 strbuf_setlen(path, pathlen);
92 for (i = 0; i < list.nr; i++)
93 free(list.entries[i]);
99 /* insert the packed refs for which no loose refs were found */
101 static void insert_packed_refs(const char *packed_refs, struct ref **list)
103 FILE *f = fopen(packed_refs, "r");
104 static char buffer[PATH_MAX];
112 if (!fgets(buffer, sizeof(buffer), f)) {
117 if (hexval(buffer[0]) > 0xf)
119 len = strlen(buffer);
120 if (buffer[len - 1] == '\n')
121 buffer[--len] = '\0';
124 while ((*list)->next &&
125 (cmp = strcmp(buffer + 41,
126 (*list)->next->name)) > 0)
127 list = &(*list)->next;
128 if (!(*list)->next || cmp < 0) {
129 struct ref *next = alloc_ref(len - 40);
131 if (get_sha1_hex(buffer, next->old_sha1)) {
132 warning ("invalid SHA-1: %s", buffer);
136 strcpy(next->name, buffer + 41);
137 next->next = (*list)->next;
138 (*list)->next = next;
139 list = &(*list)->next;
144 static struct ref *get_refs_via_rsync(const struct transport *transport)
146 struct strbuf buf = STRBUF_INIT, temp_dir = STRBUF_INIT;
147 struct ref dummy, *tail = &dummy;
148 struct child_process rsync;
152 /* copy the refs to the temporary directory */
154 strbuf_addstr(&temp_dir, git_path("rsync-refs-XXXXXX"));
155 if (!mkdtemp(temp_dir.buf))
156 die ("Could not make temporary directory");
157 temp_dir_len = temp_dir.len;
159 strbuf_addstr(&buf, transport->url);
160 strbuf_addstr(&buf, "/refs");
162 memset(&rsync, 0, sizeof(rsync));
164 rsync.stdout_to_stderr = 1;
166 args[1] = (transport->verbose > 0) ? "-rv" : "-r";
168 args[3] = temp_dir.buf;
171 if (run_command(&rsync))
172 die ("Could not run rsync to get refs");
175 strbuf_addstr(&buf, transport->url);
176 strbuf_addstr(&buf, "/packed-refs");
180 if (run_command(&rsync))
181 die ("Could not run rsync to get refs");
183 /* read the copied refs */
185 strbuf_addstr(&temp_dir, "/refs");
186 read_loose_refs(&temp_dir, temp_dir_len + 1, &tail);
187 strbuf_setlen(&temp_dir, temp_dir_len);
190 strbuf_addstr(&temp_dir, "/packed-refs");
191 insert_packed_refs(temp_dir.buf, &tail);
192 strbuf_setlen(&temp_dir, temp_dir_len);
194 if (remove_dir_recursively(&temp_dir, 0))
195 warning ("Error removing temporary directory %s.",
198 strbuf_release(&buf);
199 strbuf_release(&temp_dir);
204 static int fetch_objs_via_rsync(struct transport *transport,
205 int nr_objs, struct ref **to_fetch)
207 struct strbuf buf = STRBUF_INIT;
208 struct child_process rsync;
212 strbuf_addstr(&buf, transport->url);
213 strbuf_addstr(&buf, "/objects/");
215 memset(&rsync, 0, sizeof(rsync));
217 rsync.stdout_to_stderr = 1;
219 args[1] = (transport->verbose > 0) ? "-rv" : "-r";
220 args[2] = "--ignore-existing";
221 args[3] = "--exclude";
224 args[6] = get_object_directory();
227 /* NEEDSWORK: handle one level of alternates */
228 result = run_command(&rsync);
230 strbuf_release(&buf);
235 static int write_one_ref(const char *name, const unsigned char *sha1,
236 int flags, void *data)
238 struct strbuf *buf = data;
242 /* when called via for_each_ref(), flags is non-zero */
243 if (flags && prefixcmp(name, "refs/heads/") &&
244 prefixcmp(name, "refs/tags/"))
247 strbuf_addstr(buf, name);
248 if (safe_create_leading_directories(buf->buf) ||
249 !(f = fopen(buf->buf, "w")) ||
250 fprintf(f, "%s\n", sha1_to_hex(sha1)) < 0 ||
252 return error("problems writing temporary file %s", buf->buf);
253 strbuf_setlen(buf, len);
257 static int write_refs_to_temp_dir(struct strbuf *temp_dir,
258 int refspec_nr, const char **refspec)
262 for (i = 0; i < refspec_nr; i++) {
263 unsigned char sha1[20];
266 if (dwim_ref(refspec[i], strlen(refspec[i]), sha1, &ref) != 1)
267 return error("Could not get ref %s", refspec[i]);
269 if (write_one_ref(ref, sha1, 0, temp_dir)) {
278 static int rsync_transport_push(struct transport *transport,
279 int refspec_nr, const char **refspec, int flags)
281 struct strbuf buf = STRBUF_INIT, temp_dir = STRBUF_INIT;
283 struct child_process rsync;
286 /* first push the objects */
288 strbuf_addstr(&buf, transport->url);
289 strbuf_addch(&buf, '/');
291 memset(&rsync, 0, sizeof(rsync));
293 rsync.stdout_to_stderr = 1;
295 args[1] = (transport->verbose > 0) ? "-av" : "-a";
296 args[2] = "--ignore-existing";
297 args[3] = "--exclude";
299 args[5] = get_object_directory();;
303 if (run_command(&rsync))
304 return error("Could not push objects to %s", transport->url);
306 /* copy the refs to the temporary directory; they could be packed. */
308 strbuf_addstr(&temp_dir, git_path("rsync-refs-XXXXXX"));
309 if (!mkdtemp(temp_dir.buf))
310 die ("Could not make temporary directory");
311 strbuf_addch(&temp_dir, '/');
313 if (flags & TRANSPORT_PUSH_ALL) {
314 if (for_each_ref(write_one_ref, &temp_dir))
316 } else if (write_refs_to_temp_dir(&temp_dir, refspec_nr, refspec))
319 i = (flags & TRANSPORT_PUSH_FORCE) ? 2 : 3;
320 args[i++] = temp_dir.buf;
321 args[i++] = transport->url;
323 if (run_command(&rsync))
324 result = error("Could not push to %s", transport->url);
326 if (remove_dir_recursively(&temp_dir, 0))
327 warning ("Could not remove temporary directory %s.",
330 strbuf_release(&buf);
331 strbuf_release(&temp_dir);
336 /* Generic functions for using commit walkers */
338 static int fetch_objs_via_walker(struct transport *transport,
339 int nr_objs, struct ref **to_fetch)
341 char *dest = xstrdup(transport->url);
342 struct walker *walker = transport->data;
343 char **objs = xmalloc(nr_objs * sizeof(*objs));
347 walker->get_tree = 1;
348 walker->get_history = 1;
349 walker->get_verbosely = transport->verbose >= 0;
350 walker->get_recover = 0;
352 for (i = 0; i < nr_objs; i++)
353 objs[i] = xstrdup(sha1_to_hex(to_fetch[i]->old_sha1));
355 if (walker_fetch(walker, nr_objs, objs, NULL, NULL))
356 die("Fetch failed.");
358 for (i = 0; i < nr_objs; i++)
365 static int disconnect_walker(struct transport *transport)
367 struct walker *walker = transport->data;
374 static int curl_transport_push(struct transport *transport, int refspec_nr, const char **refspec, int flags) {
379 argv = xmalloc((refspec_nr + 11) * sizeof(char *));
380 argv[0] = "http-push";
382 if (flags & TRANSPORT_PUSH_ALL)
383 argv[argc++] = "--all";
384 if (flags & TRANSPORT_PUSH_FORCE)
385 argv[argc++] = "--force";
386 argv[argc++] = transport->url;
388 argv[argc++] = *refspec++;
390 err = run_command_v_opt(argv, RUN_GIT_CMD);
392 case -ERR_RUN_COMMAND_FORK:
393 error("unable to fork for %s", argv[0]);
394 case -ERR_RUN_COMMAND_EXEC:
395 error("unable to exec %s", argv[0]);
397 case -ERR_RUN_COMMAND_WAITPID:
398 case -ERR_RUN_COMMAND_WAITPID_WRONG_PID:
399 case -ERR_RUN_COMMAND_WAITPID_SIGNAL:
400 case -ERR_RUN_COMMAND_WAITPID_NOEXIT:
401 error("%s died with strange error", argv[0]);
406 static int missing__target(int code, int result)
408 return /* file:// URL -- do we ever use one??? */
409 (result == CURLE_FILE_COULDNT_READ_FILE) ||
410 /* http:// and https:// URL */
411 (code == 404 && result == CURLE_HTTP_RETURNED_ERROR) ||
413 (code == 550 && result == CURLE_FTP_COULDNT_RETR_FILE)
417 #define missing_target(a) missing__target((a)->http_code, (a)->curl_result)
419 static struct ref *get_refs_via_curl(const struct transport *transport)
421 struct buffer buffer;
422 char *data, *start, *mid;
427 struct active_request_slot *slot;
428 struct slot_results results;
430 struct ref *refs = NULL;
431 struct ref *ref = NULL;
432 struct ref *last_ref = NULL;
434 data = xmalloc(4096);
437 buffer.buffer = data;
439 refs_url = xmalloc(strlen(transport->url) + 11);
440 sprintf(refs_url, "%s/info/refs", transport->url);
444 slot = get_active_slot();
445 slot->results = &results;
446 curl_easy_setopt(slot->curl, CURLOPT_FILE, &buffer);
447 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_buffer);
448 curl_easy_setopt(slot->curl, CURLOPT_URL, refs_url);
449 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, NULL);
450 if (start_active_slot(slot)) {
451 run_active_slot(slot);
452 if (results.curl_result != CURLE_OK) {
453 if (missing_target(&results)) {
458 error("%s", curl_errorstr);
464 error("Unable to start request");
470 data = buffer.buffer;
473 while (i < buffer.posn) {
478 if (data[i] == '\n') {
481 ref = xmalloc(sizeof(struct ref) +
482 strlen(ref_name) + 1);
483 memset(ref, 0, sizeof(struct ref));
484 strcpy(ref->name, ref_name);
485 get_sha1_hex(start, ref->old_sha1);
489 last_ref->next = ref;
501 static int fetch_objs_via_curl(struct transport *transport,
502 int nr_objs, struct ref **to_fetch)
504 if (!transport->data)
505 transport->data = get_http_walker(transport->url);
506 return fetch_objs_via_walker(transport, nr_objs, to_fetch);
511 struct bundle_transport_data {
513 struct bundle_header header;
516 static struct ref *get_refs_from_bundle(const struct transport *transport)
518 struct bundle_transport_data *data = transport->data;
519 struct ref *result = NULL;
524 data->fd = read_bundle_header(transport->url, &data->header);
526 die ("Could not read bundle '%s'.", transport->url);
527 for (i = 0; i < data->header.references.nr; i++) {
528 struct ref_list_entry *e = data->header.references.list + i;
529 struct ref *ref = alloc_ref(strlen(e->name) + 1);
530 hashcpy(ref->old_sha1, e->sha1);
531 strcpy(ref->name, e->name);
538 static int fetch_refs_from_bundle(struct transport *transport,
539 int nr_heads, struct ref **to_fetch)
541 struct bundle_transport_data *data = transport->data;
542 return unbundle(&data->header, data->fd);
545 static int close_bundle(struct transport *transport)
547 struct bundle_transport_data *data = transport->data;
554 struct git_transport_data {
558 const char *uploadpack;
559 const char *receivepack;
562 static int set_git_option(struct transport *connection,
563 const char *name, const char *value)
565 struct git_transport_data *data = connection->data;
566 if (!strcmp(name, TRANS_OPT_UPLOADPACK)) {
567 data->uploadpack = value;
569 } else if (!strcmp(name, TRANS_OPT_RECEIVEPACK)) {
570 data->receivepack = value;
572 } else if (!strcmp(name, TRANS_OPT_THIN)) {
573 data->thin = !!value;
575 } else if (!strcmp(name, TRANS_OPT_KEEP)) {
576 data->keep = !!value;
578 } else if (!strcmp(name, TRANS_OPT_DEPTH)) {
582 data->depth = atoi(value);
588 static struct ref *get_refs_via_connect(const struct transport *transport)
590 struct git_transport_data *data = transport->data;
594 char *dest = xstrdup(transport->url);
596 pid = git_connect(fd, dest, data->uploadpack, 0);
599 die("Failed to connect to \"%s\"", transport->url);
601 get_remote_heads(fd[0], &refs, 0, NULL, 0);
611 static int fetch_refs_via_pack(struct transport *transport,
612 int nr_heads, struct ref **to_fetch)
614 struct git_transport_data *data = transport->data;
615 char **heads = xmalloc(nr_heads * sizeof(*heads));
616 char **origh = xmalloc(nr_heads * sizeof(*origh));
618 char *dest = xstrdup(transport->url);
619 struct fetch_pack_args args;
622 memset(&args, 0, sizeof(args));
623 args.uploadpack = data->uploadpack;
624 args.keep_pack = data->keep;
626 args.use_thin_pack = data->thin;
627 args.verbose = transport->verbose > 0;
628 args.depth = data->depth;
630 for (i = 0; i < nr_heads; i++)
631 origh[i] = heads[i] = xstrdup(to_fetch[i]->name);
632 refs = fetch_pack(&args, dest, nr_heads, heads, &transport->pack_lockfile);
634 for (i = 0; i < nr_heads; i++)
643 static int git_transport_push(struct transport *transport, int refspec_nr, const char **refspec, int flags) {
644 struct git_transport_data *data = transport->data;
650 argv = xmalloc((refspec_nr + 11) * sizeof(char *));
651 argv[0] = "send-pack";
653 if (flags & TRANSPORT_PUSH_ALL)
654 argv[argc++] = "--all";
655 if (flags & TRANSPORT_PUSH_FORCE)
656 argv[argc++] = "--force";
657 if (flags & TRANSPORT_PUSH_DRY_RUN)
658 argv[argc++] = "--dry-run";
659 if (data->receivepack) {
660 char *rp = xmalloc(strlen(data->receivepack) + 16);
661 sprintf(rp, "--receive-pack=%s", data->receivepack);
665 argv[argc++] = "--thin";
666 rem = xmalloc(strlen(transport->remote->name) + 10);
667 sprintf(rem, "--remote=%s", transport->remote->name);
669 argv[argc++] = transport->url;
671 argv[argc++] = *refspec++;
673 err = run_command_v_opt(argv, RUN_GIT_CMD);
675 case -ERR_RUN_COMMAND_FORK:
676 error("unable to fork for %s", argv[0]);
677 case -ERR_RUN_COMMAND_EXEC:
678 error("unable to exec %s", argv[0]);
680 case -ERR_RUN_COMMAND_WAITPID:
681 case -ERR_RUN_COMMAND_WAITPID_WRONG_PID:
682 case -ERR_RUN_COMMAND_WAITPID_SIGNAL:
683 case -ERR_RUN_COMMAND_WAITPID_NOEXIT:
684 error("%s died with strange error", argv[0]);
689 static int disconnect_git(struct transport *transport)
691 free(transport->data);
695 static int is_local(const char *url)
697 const char *colon = strchr(url, ':');
698 const char *slash = strchr(url, '/');
699 return !colon || (slash && slash < colon);
702 static int is_file(const char *url)
707 return S_ISREG(buf.st_mode);
710 struct transport *transport_get(struct remote *remote, const char *url)
712 struct transport *ret = xcalloc(1, sizeof(*ret));
714 ret->remote = remote;
717 if (!prefixcmp(url, "rsync://")) {
718 ret->get_refs_list = get_refs_via_rsync;
719 ret->fetch = fetch_objs_via_rsync;
720 ret->push = rsync_transport_push;
722 } else if (!prefixcmp(url, "http://")
723 || !prefixcmp(url, "https://")
724 || !prefixcmp(url, "ftp://")) {
726 error("git was compiled without libcurl support.");
728 ret->get_refs_list = get_refs_via_curl;
729 ret->fetch = fetch_objs_via_curl;
730 ret->push = curl_transport_push;
732 ret->disconnect = disconnect_walker;
734 } else if (is_local(url) && is_file(url)) {
735 struct bundle_transport_data *data = xcalloc(1, sizeof(*data));
737 ret->get_refs_list = get_refs_from_bundle;
738 ret->fetch = fetch_refs_from_bundle;
739 ret->disconnect = close_bundle;
742 struct git_transport_data *data = xcalloc(1, sizeof(*data));
744 ret->set_option = set_git_option;
745 ret->get_refs_list = get_refs_via_connect;
746 ret->fetch = fetch_refs_via_pack;
747 ret->push = git_transport_push;
748 ret->disconnect = disconnect_git;
751 data->uploadpack = "git-upload-pack";
752 if (remote && remote->uploadpack)
753 data->uploadpack = remote->uploadpack;
754 data->receivepack = "git-receive-pack";
755 if (remote && remote->receivepack)
756 data->receivepack = remote->receivepack;
762 int transport_set_option(struct transport *transport,
763 const char *name, const char *value)
765 if (transport->set_option)
766 return transport->set_option(transport, name, value);
770 int transport_push(struct transport *transport,
771 int refspec_nr, const char **refspec, int flags)
773 if (!transport->push)
775 return transport->push(transport, refspec_nr, refspec, flags);
778 struct ref *transport_get_remote_refs(struct transport *transport)
780 if (!transport->remote_refs)
781 transport->remote_refs = transport->get_refs_list(transport);
782 return transport->remote_refs;
785 int transport_fetch_refs(struct transport *transport, struct ref *refs)
788 int nr_heads = 0, nr_alloc = 0;
789 struct ref **heads = NULL;
792 for (rm = refs; rm; rm = rm->next) {
794 !hashcmp(rm->peer_ref->old_sha1, rm->old_sha1))
796 ALLOC_GROW(heads, nr_heads + 1, nr_alloc);
797 heads[nr_heads++] = rm;
800 rc = transport->fetch(transport, nr_heads, heads);
805 void transport_unlock_pack(struct transport *transport)
807 if (transport->pack_lockfile) {
808 unlink(transport->pack_lockfile);
809 free(transport->pack_lockfile);
810 transport->pack_lockfile = NULL;
814 int transport_disconnect(struct transport *transport)
817 if (transport->disconnect)
818 ret = transport->disconnect(transport);