Merge branch 'cb/maint-orphan-merge-noclobber'
[git/kirr.git] / transport.c
blob00786606117feea4b33b7e632b8ff8a3c26de4e4
1 #include "cache.h"
2 #include "transport.h"
3 #include "run-command.h"
4 #include "pkt-line.h"
5 #include "fetch-pack.h"
6 #include "send-pack.h"
7 #include "walker.h"
8 #include "bundle.h"
9 #include "dir.h"
10 #include "refs.h"
11 #include "branch.h"
12 #include "url.h"
14 /* rsync support */
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)
27 const char *s1 = a;
28 const char *s2 = 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,
36 struct ref **tail)
38 DIR *dir = opendir(path->buf);
39 struct dirent *de;
40 struct {
41 char **entries;
42 int nr, alloc;
43 } list;
44 int i, pathlen;
46 if (!dir)
47 return -1;
49 memset (&list, 0, sizeof(list));
51 while ((de = readdir(dir))) {
52 if (is_dot_or_dotdot(de->d_name))
53 continue;
54 ALLOC_GROW(list.entries, list.nr + 1, list.alloc);
55 list.entries[list.nr++] = xstrdup(de->d_name);
57 closedir(dir);
59 /* sort the list */
61 qsort(list.entries, list.nr, sizeof(char *), str_cmp);
63 pathlen = path->len;
64 strbuf_addch(path, '/');
66 for (i = 0; i < list.nr; i++, strbuf_setlen(path, pathlen + 1)) {
67 strbuf_addstr(path, list.entries[i]);
68 if (read_loose_refs(path, name_offset, tail)) {
69 int fd = open(path->buf, O_RDONLY);
70 char buffer[40];
71 struct ref *next;
73 if (fd < 0)
74 continue;
75 next = alloc_ref(path->buf + name_offset);
76 if (read_in_full(fd, buffer, 40) != 40 ||
77 get_sha1_hex(buffer, next->old_sha1)) {
78 close(fd);
79 free(next);
80 continue;
82 close(fd);
83 (*tail)->next = next;
84 *tail = next;
87 strbuf_setlen(path, pathlen);
89 for (i = 0; i < list.nr; i++)
90 free(list.entries[i]);
91 free(list.entries);
93 return 0;
96 /* insert the packed refs for which no loose refs were found */
98 static void insert_packed_refs(const char *packed_refs, struct ref **list)
100 FILE *f = fopen(packed_refs, "r");
101 static char buffer[PATH_MAX];
103 if (!f)
104 return;
106 for (;;) {
107 int cmp = cmp, len;
109 if (!fgets(buffer, sizeof(buffer), f)) {
110 fclose(f);
111 return;
114 if (hexval(buffer[0]) > 0xf)
115 continue;
116 len = strlen(buffer);
117 if (len && buffer[len - 1] == '\n')
118 buffer[--len] = '\0';
119 if (len < 41)
120 continue;
121 while ((*list)->next &&
122 (cmp = strcmp(buffer + 41,
123 (*list)->next->name)) > 0)
124 list = &(*list)->next;
125 if (!(*list)->next || cmp < 0) {
126 struct ref *next = alloc_ref(buffer + 41);
127 buffer[40] = '\0';
128 if (get_sha1_hex(buffer, next->old_sha1)) {
129 warning ("invalid SHA-1: %s", buffer);
130 free(next);
131 continue;
133 next->next = (*list)->next;
134 (*list)->next = next;
135 list = &(*list)->next;
140 static void set_upstreams(struct transport *transport, struct ref *refs,
141 int pretend)
143 struct ref *ref;
144 for (ref = refs; ref; ref = ref->next) {
145 const char *localname;
146 const char *tmp;
147 const char *remotename;
148 unsigned char sha[20];
149 int flag = 0;
151 * Check suitability for tracking. Must be successful /
152 * already up-to-date ref create/modify (not delete).
154 if (ref->status != REF_STATUS_OK &&
155 ref->status != REF_STATUS_UPTODATE)
156 continue;
157 if (!ref->peer_ref)
158 continue;
159 if (!ref->new_sha1 || is_null_sha1(ref->new_sha1))
160 continue;
162 /* Follow symbolic refs (mainly for HEAD). */
163 localname = ref->peer_ref->name;
164 remotename = ref->name;
165 tmp = resolve_ref(localname, sha, 1, &flag);
166 if (tmp && flag & REF_ISSYMREF &&
167 !prefixcmp(tmp, "refs/heads/"))
168 localname = tmp;
170 /* Both source and destination must be local branches. */
171 if (!localname || prefixcmp(localname, "refs/heads/"))
172 continue;
173 if (!remotename || prefixcmp(remotename, "refs/heads/"))
174 continue;
176 if (!pretend)
177 install_branch_config(BRANCH_CONFIG_VERBOSE,
178 localname + 11, transport->remote->name,
179 remotename);
180 else
181 printf("Would set upstream of '%s' to '%s' of '%s'\n",
182 localname + 11, remotename + 11,
183 transport->remote->name);
187 static const char *rsync_url(const char *url)
189 return prefixcmp(url, "rsync://") ? skip_prefix(url, "rsync:") : url;
192 static struct ref *get_refs_via_rsync(struct transport *transport, int for_push)
194 struct strbuf buf = STRBUF_INIT, temp_dir = STRBUF_INIT;
195 struct ref dummy = {0}, *tail = &dummy;
196 struct child_process rsync;
197 const char *args[5];
198 int temp_dir_len;
200 if (for_push)
201 return NULL;
203 /* copy the refs to the temporary directory */
205 strbuf_addstr(&temp_dir, git_path("rsync-refs-XXXXXX"));
206 if (!mkdtemp(temp_dir.buf))
207 die_errno ("Could not make temporary directory");
208 temp_dir_len = temp_dir.len;
210 strbuf_addstr(&buf, rsync_url(transport->url));
211 strbuf_addstr(&buf, "/refs");
213 memset(&rsync, 0, sizeof(rsync));
214 rsync.argv = args;
215 rsync.stdout_to_stderr = 1;
216 args[0] = "rsync";
217 args[1] = (transport->verbose > 0) ? "-rv" : "-r";
218 args[2] = buf.buf;
219 args[3] = temp_dir.buf;
220 args[4] = NULL;
222 if (run_command(&rsync))
223 die ("Could not run rsync to get refs");
225 strbuf_reset(&buf);
226 strbuf_addstr(&buf, rsync_url(transport->url));
227 strbuf_addstr(&buf, "/packed-refs");
229 args[2] = buf.buf;
231 if (run_command(&rsync))
232 die ("Could not run rsync to get refs");
234 /* read the copied refs */
236 strbuf_addstr(&temp_dir, "/refs");
237 read_loose_refs(&temp_dir, temp_dir_len + 1, &tail);
238 strbuf_setlen(&temp_dir, temp_dir_len);
240 tail = &dummy;
241 strbuf_addstr(&temp_dir, "/packed-refs");
242 insert_packed_refs(temp_dir.buf, &tail);
243 strbuf_setlen(&temp_dir, temp_dir_len);
245 if (remove_dir_recursively(&temp_dir, 0))
246 warning ("Error removing temporary directory %s.",
247 temp_dir.buf);
249 strbuf_release(&buf);
250 strbuf_release(&temp_dir);
252 return dummy.next;
255 static int fetch_objs_via_rsync(struct transport *transport,
256 int nr_objs, struct ref **to_fetch)
258 struct strbuf buf = STRBUF_INIT;
259 struct child_process rsync;
260 const char *args[8];
261 int result;
263 strbuf_addstr(&buf, rsync_url(transport->url));
264 strbuf_addstr(&buf, "/objects/");
266 memset(&rsync, 0, sizeof(rsync));
267 rsync.argv = args;
268 rsync.stdout_to_stderr = 1;
269 args[0] = "rsync";
270 args[1] = (transport->verbose > 0) ? "-rv" : "-r";
271 args[2] = "--ignore-existing";
272 args[3] = "--exclude";
273 args[4] = "info";
274 args[5] = buf.buf;
275 args[6] = get_object_directory();
276 args[7] = NULL;
278 /* NEEDSWORK: handle one level of alternates */
279 result = run_command(&rsync);
281 strbuf_release(&buf);
283 return result;
286 static int write_one_ref(const char *name, const unsigned char *sha1,
287 int flags, void *data)
289 struct strbuf *buf = data;
290 int len = buf->len;
291 FILE *f;
293 /* when called via for_each_ref(), flags is non-zero */
294 if (flags && prefixcmp(name, "refs/heads/") &&
295 prefixcmp(name, "refs/tags/"))
296 return 0;
298 strbuf_addstr(buf, name);
299 if (safe_create_leading_directories(buf->buf) ||
300 !(f = fopen(buf->buf, "w")) ||
301 fprintf(f, "%s\n", sha1_to_hex(sha1)) < 0 ||
302 fclose(f))
303 return error("problems writing temporary file %s", buf->buf);
304 strbuf_setlen(buf, len);
305 return 0;
308 static int write_refs_to_temp_dir(struct strbuf *temp_dir,
309 int refspec_nr, const char **refspec)
311 int i;
313 for (i = 0; i < refspec_nr; i++) {
314 unsigned char sha1[20];
315 char *ref;
317 if (dwim_ref(refspec[i], strlen(refspec[i]), sha1, &ref) != 1)
318 return error("Could not get ref %s", refspec[i]);
320 if (write_one_ref(ref, sha1, 0, temp_dir)) {
321 free(ref);
322 return -1;
324 free(ref);
326 return 0;
329 static int rsync_transport_push(struct transport *transport,
330 int refspec_nr, const char **refspec, int flags)
332 struct strbuf buf = STRBUF_INIT, temp_dir = STRBUF_INIT;
333 int result = 0, i;
334 struct child_process rsync;
335 const char *args[10];
337 if (flags & TRANSPORT_PUSH_MIRROR)
338 return error("rsync transport does not support mirror mode");
340 /* first push the objects */
342 strbuf_addstr(&buf, rsync_url(transport->url));
343 strbuf_addch(&buf, '/');
345 memset(&rsync, 0, sizeof(rsync));
346 rsync.argv = args;
347 rsync.stdout_to_stderr = 1;
348 i = 0;
349 args[i++] = "rsync";
350 args[i++] = "-a";
351 if (flags & TRANSPORT_PUSH_DRY_RUN)
352 args[i++] = "--dry-run";
353 if (transport->verbose > 0)
354 args[i++] = "-v";
355 args[i++] = "--ignore-existing";
356 args[i++] = "--exclude";
357 args[i++] = "info";
358 args[i++] = get_object_directory();
359 args[i++] = buf.buf;
360 args[i++] = NULL;
362 if (run_command(&rsync))
363 return error("Could not push objects to %s",
364 rsync_url(transport->url));
366 /* copy the refs to the temporary directory; they could be packed. */
368 strbuf_addstr(&temp_dir, git_path("rsync-refs-XXXXXX"));
369 if (!mkdtemp(temp_dir.buf))
370 die_errno ("Could not make temporary directory");
371 strbuf_addch(&temp_dir, '/');
373 if (flags & TRANSPORT_PUSH_ALL) {
374 if (for_each_ref(write_one_ref, &temp_dir))
375 return -1;
376 } else if (write_refs_to_temp_dir(&temp_dir, refspec_nr, refspec))
377 return -1;
379 i = 2;
380 if (flags & TRANSPORT_PUSH_DRY_RUN)
381 args[i++] = "--dry-run";
382 if (!(flags & TRANSPORT_PUSH_FORCE))
383 args[i++] = "--ignore-existing";
384 args[i++] = temp_dir.buf;
385 args[i++] = rsync_url(transport->url);
386 args[i++] = NULL;
387 if (run_command(&rsync))
388 result = error("Could not push to %s",
389 rsync_url(transport->url));
391 if (remove_dir_recursively(&temp_dir, 0))
392 warning ("Could not remove temporary directory %s.",
393 temp_dir.buf);
395 strbuf_release(&buf);
396 strbuf_release(&temp_dir);
398 return result;
401 struct bundle_transport_data {
402 int fd;
403 struct bundle_header header;
406 static struct ref *get_refs_from_bundle(struct transport *transport, int for_push)
408 struct bundle_transport_data *data = transport->data;
409 struct ref *result = NULL;
410 int i;
412 if (for_push)
413 return NULL;
415 if (data->fd > 0)
416 close(data->fd);
417 data->fd = read_bundle_header(transport->url, &data->header);
418 if (data->fd < 0)
419 die ("Could not read bundle '%s'.", transport->url);
420 for (i = 0; i < data->header.references.nr; i++) {
421 struct ref_list_entry *e = data->header.references.list + i;
422 struct ref *ref = alloc_ref(e->name);
423 hashcpy(ref->old_sha1, e->sha1);
424 ref->next = result;
425 result = ref;
427 return result;
430 static int fetch_refs_from_bundle(struct transport *transport,
431 int nr_heads, struct ref **to_fetch)
433 struct bundle_transport_data *data = transport->data;
434 return unbundle(&data->header, data->fd);
437 static int close_bundle(struct transport *transport)
439 struct bundle_transport_data *data = transport->data;
440 if (data->fd > 0)
441 close(data->fd);
442 free(data);
443 return 0;
446 struct git_transport_data {
447 struct git_transport_options options;
448 struct child_process *conn;
449 int fd[2];
450 unsigned got_remote_heads : 1;
451 struct extra_have_objects extra_have;
454 static int set_git_option(struct git_transport_options *opts,
455 const char *name, const char *value)
457 if (!strcmp(name, TRANS_OPT_UPLOADPACK)) {
458 opts->uploadpack = value;
459 return 0;
460 } else if (!strcmp(name, TRANS_OPT_RECEIVEPACK)) {
461 opts->receivepack = value;
462 return 0;
463 } else if (!strcmp(name, TRANS_OPT_THIN)) {
464 opts->thin = !!value;
465 return 0;
466 } else if (!strcmp(name, TRANS_OPT_FOLLOWTAGS)) {
467 opts->followtags = !!value;
468 return 0;
469 } else if (!strcmp(name, TRANS_OPT_KEEP)) {
470 opts->keep = !!value;
471 return 0;
472 } else if (!strcmp(name, TRANS_OPT_DEPTH)) {
473 if (!value)
474 opts->depth = 0;
475 else
476 opts->depth = atoi(value);
477 return 0;
479 return 1;
482 static int connect_setup(struct transport *transport, int for_push, int verbose)
484 struct git_transport_data *data = transport->data;
486 if (data->conn)
487 return 0;
489 data->conn = git_connect(data->fd, transport->url,
490 for_push ? data->options.receivepack :
491 data->options.uploadpack,
492 verbose ? CONNECT_VERBOSE : 0);
494 return 0;
497 static struct ref *get_refs_via_connect(struct transport *transport, int for_push)
499 struct git_transport_data *data = transport->data;
500 struct ref *refs;
502 connect_setup(transport, for_push, 0);
503 get_remote_heads(data->fd[0], &refs, 0, NULL,
504 for_push ? REF_NORMAL : 0, &data->extra_have);
505 data->got_remote_heads = 1;
507 return refs;
510 static int fetch_refs_via_pack(struct transport *transport,
511 int nr_heads, struct ref **to_fetch)
513 struct git_transport_data *data = transport->data;
514 char **heads = xmalloc(nr_heads * sizeof(*heads));
515 char **origh = xmalloc(nr_heads * sizeof(*origh));
516 const struct ref *refs;
517 char *dest = xstrdup(transport->url);
518 struct fetch_pack_args args;
519 int i;
520 struct ref *refs_tmp = NULL;
522 memset(&args, 0, sizeof(args));
523 args.uploadpack = data->options.uploadpack;
524 args.keep_pack = data->options.keep;
525 args.lock_pack = 1;
526 args.use_thin_pack = data->options.thin;
527 args.include_tag = data->options.followtags;
528 args.verbose = (transport->verbose > 0);
529 args.quiet = (transport->verbose < 0);
530 args.no_progress = !transport->progress;
531 args.depth = data->options.depth;
533 for (i = 0; i < nr_heads; i++)
534 origh[i] = heads[i] = xstrdup(to_fetch[i]->name);
536 if (!data->got_remote_heads) {
537 connect_setup(transport, 0, 0);
538 get_remote_heads(data->fd[0], &refs_tmp, 0, NULL, 0, NULL);
539 data->got_remote_heads = 1;
542 refs = fetch_pack(&args, data->fd, data->conn,
543 refs_tmp ? refs_tmp : transport->remote_refs,
544 dest, nr_heads, heads, &transport->pack_lockfile);
545 close(data->fd[0]);
546 close(data->fd[1]);
547 if (finish_connect(data->conn))
548 refs = NULL;
549 data->conn = NULL;
550 data->got_remote_heads = 0;
552 free_refs(refs_tmp);
554 for (i = 0; i < nr_heads; i++)
555 free(origh[i]);
556 free(origh);
557 free(heads);
558 free(dest);
559 return (refs ? 0 : -1);
562 static int push_had_errors(struct ref *ref)
564 for (; ref; ref = ref->next) {
565 switch (ref->status) {
566 case REF_STATUS_NONE:
567 case REF_STATUS_UPTODATE:
568 case REF_STATUS_OK:
569 break;
570 default:
571 return 1;
574 return 0;
577 int transport_refs_pushed(struct ref *ref)
579 for (; ref; ref = ref->next) {
580 switch(ref->status) {
581 case REF_STATUS_NONE:
582 case REF_STATUS_UPTODATE:
583 break;
584 default:
585 return 1;
588 return 0;
591 void transport_update_tracking_ref(struct remote *remote, struct ref *ref, int verbose)
593 struct refspec rs;
595 if (ref->status != REF_STATUS_OK && ref->status != REF_STATUS_UPTODATE)
596 return;
598 rs.src = ref->name;
599 rs.dst = NULL;
601 if (!remote_find_tracking(remote, &rs)) {
602 if (verbose)
603 fprintf(stderr, "updating local tracking ref '%s'\n", rs.dst);
604 if (ref->deletion) {
605 delete_ref(rs.dst, NULL, 0);
606 } else
607 update_ref("update by push", rs.dst,
608 ref->new_sha1, NULL, 0, 0);
609 free(rs.dst);
613 static void print_ref_status(char flag, const char *summary, struct ref *to, struct ref *from, const char *msg, int porcelain)
615 if (porcelain) {
616 if (from)
617 fprintf(stdout, "%c\t%s:%s\t", flag, from->name, to->name);
618 else
619 fprintf(stdout, "%c\t:%s\t", flag, to->name);
620 if (msg)
621 fprintf(stdout, "%s (%s)\n", summary, msg);
622 else
623 fprintf(stdout, "%s\n", summary);
624 } else {
625 fprintf(stderr, " %c %-*s ", flag, TRANSPORT_SUMMARY_WIDTH, summary);
626 if (from)
627 fprintf(stderr, "%s -> %s", prettify_refname(from->name), prettify_refname(to->name));
628 else
629 fputs(prettify_refname(to->name), stderr);
630 if (msg) {
631 fputs(" (", stderr);
632 fputs(msg, stderr);
633 fputc(')', stderr);
635 fputc('\n', stderr);
639 static const char *status_abbrev(unsigned char sha1[20])
641 return find_unique_abbrev(sha1, DEFAULT_ABBREV);
644 static void print_ok_ref_status(struct ref *ref, int porcelain)
646 if (ref->deletion)
647 print_ref_status('-', "[deleted]", ref, NULL, NULL, porcelain);
648 else if (is_null_sha1(ref->old_sha1))
649 print_ref_status('*',
650 (!prefixcmp(ref->name, "refs/tags/") ? "[new tag]" :
651 "[new branch]"),
652 ref, ref->peer_ref, NULL, porcelain);
653 else {
654 char quickref[84];
655 char type;
656 const char *msg;
658 strcpy(quickref, status_abbrev(ref->old_sha1));
659 if (ref->nonfastforward) {
660 strcat(quickref, "...");
661 type = '+';
662 msg = "forced update";
663 } else {
664 strcat(quickref, "..");
665 type = ' ';
666 msg = NULL;
668 strcat(quickref, status_abbrev(ref->new_sha1));
670 print_ref_status(type, quickref, ref, ref->peer_ref, msg, porcelain);
674 static int print_one_push_status(struct ref *ref, const char *dest, int count, int porcelain)
676 if (!count)
677 fprintf(porcelain ? stdout : stderr, "To %s\n", dest);
679 switch(ref->status) {
680 case REF_STATUS_NONE:
681 print_ref_status('X', "[no match]", ref, NULL, NULL, porcelain);
682 break;
683 case REF_STATUS_REJECT_NODELETE:
684 print_ref_status('!', "[rejected]", ref, NULL,
685 "remote does not support deleting refs", porcelain);
686 break;
687 case REF_STATUS_UPTODATE:
688 print_ref_status('=', "[up to date]", ref,
689 ref->peer_ref, NULL, porcelain);
690 break;
691 case REF_STATUS_REJECT_NONFASTFORWARD:
692 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
693 "non-fast-forward", porcelain);
694 break;
695 case REF_STATUS_REMOTE_REJECT:
696 print_ref_status('!', "[remote rejected]", ref,
697 ref->deletion ? NULL : ref->peer_ref,
698 ref->remote_status, porcelain);
699 break;
700 case REF_STATUS_EXPECTING_REPORT:
701 print_ref_status('!', "[remote failure]", ref,
702 ref->deletion ? NULL : ref->peer_ref,
703 "remote failed to report status", porcelain);
704 break;
705 case REF_STATUS_OK:
706 print_ok_ref_status(ref, porcelain);
707 break;
710 return 1;
713 void transport_print_push_status(const char *dest, struct ref *refs,
714 int verbose, int porcelain, int *nonfastforward)
716 struct ref *ref;
717 int n = 0;
719 if (verbose) {
720 for (ref = refs; ref; ref = ref->next)
721 if (ref->status == REF_STATUS_UPTODATE)
722 n += print_one_push_status(ref, dest, n, porcelain);
725 for (ref = refs; ref; ref = ref->next)
726 if (ref->status == REF_STATUS_OK)
727 n += print_one_push_status(ref, dest, n, porcelain);
729 *nonfastforward = 0;
730 for (ref = refs; ref; ref = ref->next) {
731 if (ref->status != REF_STATUS_NONE &&
732 ref->status != REF_STATUS_UPTODATE &&
733 ref->status != REF_STATUS_OK)
734 n += print_one_push_status(ref, dest, n, porcelain);
735 if (ref->status == REF_STATUS_REJECT_NONFASTFORWARD)
736 *nonfastforward = 1;
740 void transport_verify_remote_names(int nr_heads, const char **heads)
742 int i;
744 for (i = 0; i < nr_heads; i++) {
745 const char *local = heads[i];
746 const char *remote = strrchr(heads[i], ':');
748 if (*local == '+')
749 local++;
751 /* A matching refspec is okay. */
752 if (remote == local && remote[1] == '\0')
753 continue;
755 remote = remote ? (remote + 1) : local;
756 switch (check_ref_format(remote)) {
757 case 0: /* ok */
758 case CHECK_REF_FORMAT_ONELEVEL:
759 /* ok but a single level -- that is fine for
760 * a match pattern.
762 case CHECK_REF_FORMAT_WILDCARD:
763 /* ok but ends with a pattern-match character */
764 continue;
766 die("remote part of refspec is not a valid name in %s",
767 heads[i]);
771 static int git_transport_push(struct transport *transport, struct ref *remote_refs, int flags)
773 struct git_transport_data *data = transport->data;
774 struct send_pack_args args;
775 int ret;
777 if (!data->got_remote_heads) {
778 struct ref *tmp_refs;
779 connect_setup(transport, 1, 0);
781 get_remote_heads(data->fd[0], &tmp_refs, 0, NULL, REF_NORMAL,
782 NULL);
783 data->got_remote_heads = 1;
786 memset(&args, 0, sizeof(args));
787 args.send_mirror = !!(flags & TRANSPORT_PUSH_MIRROR);
788 args.force_update = !!(flags & TRANSPORT_PUSH_FORCE);
789 args.use_thin_pack = data->options.thin;
790 args.verbose = (transport->verbose > 0);
791 args.quiet = (transport->verbose < 0);
792 args.progress = transport->progress;
793 args.dry_run = !!(flags & TRANSPORT_PUSH_DRY_RUN);
794 args.porcelain = !!(flags & TRANSPORT_PUSH_PORCELAIN);
796 ret = send_pack(&args, data->fd, data->conn, remote_refs,
797 &data->extra_have);
799 close(data->fd[1]);
800 close(data->fd[0]);
801 ret |= finish_connect(data->conn);
802 data->conn = NULL;
803 data->got_remote_heads = 0;
805 return ret;
808 static int connect_git(struct transport *transport, const char *name,
809 const char *executable, int fd[2])
811 struct git_transport_data *data = transport->data;
812 data->conn = git_connect(data->fd, transport->url,
813 executable, 0);
814 fd[0] = data->fd[0];
815 fd[1] = data->fd[1];
816 return 0;
819 static int disconnect_git(struct transport *transport)
821 struct git_transport_data *data = transport->data;
822 if (data->conn) {
823 if (data->got_remote_heads)
824 packet_flush(data->fd[1]);
825 close(data->fd[0]);
826 close(data->fd[1]);
827 finish_connect(data->conn);
830 free(data);
831 return 0;
834 void transport_take_over(struct transport *transport,
835 struct child_process *child)
837 struct git_transport_data *data;
839 if (!transport->smart_options)
840 die("Bug detected: Taking over transport requires non-NULL "
841 "smart_options field.");
843 data = xcalloc(1, sizeof(*data));
844 data->options = *transport->smart_options;
845 data->conn = child;
846 data->fd[0] = data->conn->out;
847 data->fd[1] = data->conn->in;
848 data->got_remote_heads = 0;
849 transport->data = data;
851 transport->set_option = NULL;
852 transport->get_refs_list = get_refs_via_connect;
853 transport->fetch = fetch_refs_via_pack;
854 transport->push = NULL;
855 transport->push_refs = git_transport_push;
856 transport->disconnect = disconnect_git;
857 transport->smart_options = &(data->options);
860 static int is_local(const char *url)
862 const char *colon = strchr(url, ':');
863 const char *slash = strchr(url, '/');
864 return !colon || (slash && slash < colon) ||
865 has_dos_drive_prefix(url);
868 static int is_file(const char *url)
870 struct stat buf;
871 if (stat(url, &buf))
872 return 0;
873 return S_ISREG(buf.st_mode);
876 static int external_specification_len(const char *url)
878 return strchr(url, ':') - url;
881 struct transport *transport_get(struct remote *remote, const char *url)
883 const char *helper;
884 struct transport *ret = xcalloc(1, sizeof(*ret));
886 ret->progress = isatty(2);
888 if (!remote)
889 die("No remote provided to transport_get()");
891 ret->got_remote_refs = 0;
892 ret->remote = remote;
893 helper = remote->foreign_vcs;
895 if (!url && remote->url)
896 url = remote->url[0];
897 ret->url = url;
899 /* maybe it is a foreign URL? */
900 if (url) {
901 const char *p = url;
903 while (is_urlschemechar(p == url, *p))
904 p++;
905 if (!prefixcmp(p, "::"))
906 helper = xstrndup(url, p - url);
909 if (helper) {
910 transport_helper_init(ret, helper);
911 } else if (!prefixcmp(url, "rsync:")) {
912 ret->get_refs_list = get_refs_via_rsync;
913 ret->fetch = fetch_objs_via_rsync;
914 ret->push = rsync_transport_push;
915 ret->smart_options = NULL;
916 } else if (is_local(url) && is_file(url)) {
917 struct bundle_transport_data *data = xcalloc(1, sizeof(*data));
918 ret->data = data;
919 ret->get_refs_list = get_refs_from_bundle;
920 ret->fetch = fetch_refs_from_bundle;
921 ret->disconnect = close_bundle;
922 ret->smart_options = NULL;
923 } else if (!is_url(url)
924 || !prefixcmp(url, "file://")
925 || !prefixcmp(url, "git://")
926 || !prefixcmp(url, "ssh://")
927 || !prefixcmp(url, "git+ssh://")
928 || !prefixcmp(url, "ssh+git://")) {
929 /* These are builtin smart transports. */
930 struct git_transport_data *data = xcalloc(1, sizeof(*data));
931 ret->data = data;
932 ret->set_option = NULL;
933 ret->get_refs_list = get_refs_via_connect;
934 ret->fetch = fetch_refs_via_pack;
935 ret->push_refs = git_transport_push;
936 ret->connect = connect_git;
937 ret->disconnect = disconnect_git;
938 ret->smart_options = &(data->options);
940 data->conn = NULL;
941 data->got_remote_heads = 0;
942 } else {
943 /* Unknown protocol in URL. Pass to external handler. */
944 int len = external_specification_len(url);
945 char *handler = xmalloc(len + 1);
946 handler[len] = 0;
947 strncpy(handler, url, len);
948 transport_helper_init(ret, handler);
951 if (ret->smart_options) {
952 ret->smart_options->thin = 1;
953 ret->smart_options->uploadpack = "git-upload-pack";
954 if (remote->uploadpack)
955 ret->smart_options->uploadpack = remote->uploadpack;
956 ret->smart_options->receivepack = "git-receive-pack";
957 if (remote->receivepack)
958 ret->smart_options->receivepack = remote->receivepack;
961 return ret;
964 int transport_set_option(struct transport *transport,
965 const char *name, const char *value)
967 int git_reports = 1, protocol_reports = 1;
969 if (transport->smart_options)
970 git_reports = set_git_option(transport->smart_options,
971 name, value);
973 if (transport->set_option)
974 protocol_reports = transport->set_option(transport, name,
975 value);
977 /* If either report is 0, report 0 (success). */
978 if (!git_reports || !protocol_reports)
979 return 0;
980 /* If either reports -1 (invalid value), report -1. */
981 if ((git_reports == -1) || (protocol_reports == -1))
982 return -1;
983 /* Otherwise if both report unknown, report unknown. */
984 return 1;
987 void transport_set_verbosity(struct transport *transport, int verbosity,
988 int force_progress)
990 if (verbosity >= 2)
991 transport->verbose = verbosity <= 3 ? verbosity : 3;
992 if (verbosity < 0)
993 transport->verbose = -1;
996 * Rules used to determine whether to report progress (processing aborts
997 * when a rule is satisfied):
999 * 1. Report progress, if force_progress is 1 (ie. --progress).
1000 * 2. Don't report progress, if verbosity < 0 (ie. -q/--quiet ).
1001 * 3. Report progress if isatty(2) is 1.
1003 transport->progress = force_progress || (verbosity >= 0 && isatty(2));
1006 int transport_push(struct transport *transport,
1007 int refspec_nr, const char **refspec, int flags,
1008 int *nonfastforward)
1010 *nonfastforward = 0;
1011 transport_verify_remote_names(refspec_nr, refspec);
1013 if (transport->push) {
1014 /* Maybe FIXME. But no important transport uses this case. */
1015 if (flags & TRANSPORT_PUSH_SET_UPSTREAM)
1016 die("This transport does not support using --set-upstream");
1018 return transport->push(transport, refspec_nr, refspec, flags);
1019 } else if (transport->push_refs) {
1020 struct ref *remote_refs =
1021 transport->get_refs_list(transport, 1);
1022 struct ref *local_refs = get_local_heads();
1023 int match_flags = MATCH_REFS_NONE;
1024 int verbose = (transport->verbose > 0);
1025 int quiet = (transport->verbose < 0);
1026 int porcelain = flags & TRANSPORT_PUSH_PORCELAIN;
1027 int pretend = flags & TRANSPORT_PUSH_DRY_RUN;
1028 int push_ret, ret, err;
1030 if (flags & TRANSPORT_PUSH_ALL)
1031 match_flags |= MATCH_REFS_ALL;
1032 if (flags & TRANSPORT_PUSH_MIRROR)
1033 match_flags |= MATCH_REFS_MIRROR;
1035 if (match_refs(local_refs, &remote_refs,
1036 refspec_nr, refspec, match_flags)) {
1037 return -1;
1040 set_ref_status_for_push(remote_refs,
1041 flags & TRANSPORT_PUSH_MIRROR,
1042 flags & TRANSPORT_PUSH_FORCE);
1044 push_ret = transport->push_refs(transport, remote_refs, flags);
1045 err = push_had_errors(remote_refs);
1046 ret = push_ret | err;
1048 if (!quiet || err)
1049 transport_print_push_status(transport->url, remote_refs,
1050 verbose | porcelain, porcelain,
1051 nonfastforward);
1053 if (flags & TRANSPORT_PUSH_SET_UPSTREAM)
1054 set_upstreams(transport, remote_refs, pretend);
1056 if (!(flags & TRANSPORT_PUSH_DRY_RUN)) {
1057 struct ref *ref;
1058 for (ref = remote_refs; ref; ref = ref->next)
1059 transport_update_tracking_ref(transport->remote, ref, verbose);
1062 if (porcelain && !push_ret)
1063 puts("Done");
1064 else if (!quiet && !ret && !transport_refs_pushed(remote_refs))
1065 fprintf(stderr, "Everything up-to-date\n");
1067 return ret;
1069 return 1;
1072 const struct ref *transport_get_remote_refs(struct transport *transport)
1074 if (!transport->got_remote_refs) {
1075 transport->remote_refs = transport->get_refs_list(transport, 0);
1076 transport->got_remote_refs = 1;
1079 return transport->remote_refs;
1082 int transport_fetch_refs(struct transport *transport, struct ref *refs)
1084 int rc;
1085 int nr_heads = 0, nr_alloc = 0, nr_refs = 0;
1086 struct ref **heads = NULL;
1087 struct ref *rm;
1089 for (rm = refs; rm; rm = rm->next) {
1090 nr_refs++;
1091 if (rm->peer_ref &&
1092 !is_null_sha1(rm->old_sha1) &&
1093 !hashcmp(rm->peer_ref->old_sha1, rm->old_sha1))
1094 continue;
1095 ALLOC_GROW(heads, nr_heads + 1, nr_alloc);
1096 heads[nr_heads++] = rm;
1099 if (!nr_heads) {
1101 * When deepening of a shallow repository is requested,
1102 * then local and remote refs are likely to still be equal.
1103 * Just feed them all to the fetch method in that case.
1104 * This condition shouldn't be met in a non-deepening fetch
1105 * (see builtin-fetch.c:quickfetch()).
1107 heads = xmalloc(nr_refs * sizeof(*heads));
1108 for (rm = refs; rm; rm = rm->next)
1109 heads[nr_heads++] = rm;
1112 rc = transport->fetch(transport, nr_heads, heads);
1114 free(heads);
1115 return rc;
1118 void transport_unlock_pack(struct transport *transport)
1120 if (transport->pack_lockfile) {
1121 unlink_or_warn(transport->pack_lockfile);
1122 free(transport->pack_lockfile);
1123 transport->pack_lockfile = NULL;
1127 int transport_connect(struct transport *transport, const char *name,
1128 const char *exec, int fd[2])
1130 if (transport->connect)
1131 return transport->connect(transport, name, exec, fd);
1132 else
1133 die("Operation not supported by protocol");
1136 int transport_disconnect(struct transport *transport)
1138 int ret = 0;
1139 if (transport->disconnect)
1140 ret = transport->disconnect(transport);
1141 free(transport);
1142 return ret;
1146 * Strip username (and password) from an url and return
1147 * it in a newly allocated string.
1149 char *transport_anonymize_url(const char *url)
1151 char *anon_url, *scheme_prefix, *anon_part;
1152 size_t anon_len, prefix_len = 0;
1154 anon_part = strchr(url, '@');
1155 if (is_local(url) || !anon_part)
1156 goto literal_copy;
1158 anon_len = strlen(++anon_part);
1159 scheme_prefix = strstr(url, "://");
1160 if (!scheme_prefix) {
1161 if (!strchr(anon_part, ':'))
1162 /* cannot be "me@there:/path/name" */
1163 goto literal_copy;
1164 } else {
1165 const char *cp;
1166 /* make sure scheme is reasonable */
1167 for (cp = url; cp < scheme_prefix; cp++) {
1168 switch (*cp) {
1169 /* RFC 1738 2.1 */
1170 case '+': case '.': case '-':
1171 break; /* ok */
1172 default:
1173 if (isalnum(*cp))
1174 break;
1175 /* it isn't */
1176 goto literal_copy;
1179 /* @ past the first slash does not count */
1180 cp = strchr(scheme_prefix + 3, '/');
1181 if (cp && cp < anon_part)
1182 goto literal_copy;
1183 prefix_len = scheme_prefix - url + 3;
1185 anon_url = xcalloc(1, 1 + prefix_len + anon_len);
1186 memcpy(anon_url, url, prefix_len);
1187 memcpy(anon_url + prefix_len, anon_part, anon_len);
1188 return anon_url;
1189 literal_copy:
1190 return xstrdup(url);