fetch_pack(): update sought->nr to reflect number of unique entries
[git/git.git] / transport.c
CommitLineData
9b288516
DB
1#include "cache.h"
2#include "transport.h"
3#include "run-command.h"
c29727d5
DB
4#include "pkt-line.h"
5#include "fetch-pack.h"
40cb4fab 6#include "send-pack.h"
c29727d5 7#include "walker.h"
c7a8a162 8#include "bundle.h"
cd547b48
JS
9#include "dir.h"
10#include "refs.h"
e9fcd1e2 11#include "branch.h"
638794cd 12#include "url.h"
d2b17b32 13#include "submodule.h"
a762e51e 14#include "string-list.h"
cd547b48
JS
15
16/* rsync support */
17
18/*
19 * We copy packed-refs and refs/ into a temporary file, then read the
20 * loose refs recursively (sorting whenever possible), and then inserting
21 * those packed refs that are not yet in the list (not validating, but
22 * assuming that the file is sorted).
23 *
24 * Appears refactoring this from refs.c is too cumbersome.
25 */
26
27static int str_cmp(const void *a, const void *b)
28{
29 const char *s1 = a;
30 const char *s2 = b;
31
32 return strcmp(s1, s2);
33}
34
35/* path->buf + name_offset is expected to point to "refs/" */
36
37static int read_loose_refs(struct strbuf *path, int name_offset,
38 struct ref **tail)
39{
40 DIR *dir = opendir(path->buf);
41 struct dirent *de;
42 struct {
43 char **entries;
44 int nr, alloc;
45 } list;
46 int i, pathlen;
47
48 if (!dir)
49 return -1;
50
51 memset (&list, 0, sizeof(list));
52
53 while ((de = readdir(dir))) {
8ca12c0d 54 if (is_dot_or_dotdot(de->d_name))
cd547b48
JS
55 continue;
56 ALLOC_GROW(list.entries, list.nr + 1, list.alloc);
57 list.entries[list.nr++] = xstrdup(de->d_name);
58 }
59 closedir(dir);
60
61 /* sort the list */
62
63 qsort(list.entries, list.nr, sizeof(char *), str_cmp);
64
65 pathlen = path->len;
66 strbuf_addch(path, '/');
67
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);
72 char buffer[40];
73 struct ref *next;
74
75 if (fd < 0)
76 continue;
59c69c0c 77 next = alloc_ref(path->buf + name_offset);
cd547b48
JS
78 if (read_in_full(fd, buffer, 40) != 40 ||
79 get_sha1_hex(buffer, next->old_sha1)) {
80 close(fd);
81 free(next);
82 continue;
83 }
84 close(fd);
cd547b48
JS
85 (*tail)->next = next;
86 *tail = next;
87 }
88 }
89 strbuf_setlen(path, pathlen);
90
91 for (i = 0; i < list.nr; i++)
92 free(list.entries[i]);
93 free(list.entries);
94
95 return 0;
96}
97
98/* insert the packed refs for which no loose refs were found */
99
100static void insert_packed_refs(const char *packed_refs, struct ref **list)
101{
102 FILE *f = fopen(packed_refs, "r");
103 static char buffer[PATH_MAX];
104
105 if (!f)
106 return;
107
108 for (;;) {
47ec7943 109 int cmp = cmp, len;
cd547b48
JS
110
111 if (!fgets(buffer, sizeof(buffer), f)) {
112 fclose(f);
113 return;
114 }
115
116 if (hexval(buffer[0]) > 0xf)
117 continue;
118 len = strlen(buffer);
872c930d 119 if (len && buffer[len - 1] == '\n')
cd547b48
JS
120 buffer[--len] = '\0';
121 if (len < 41)
122 continue;
123 while ((*list)->next &&
124 (cmp = strcmp(buffer + 41,
125 (*list)->next->name)) > 0)
126 list = &(*list)->next;
127 if (!(*list)->next || cmp < 0) {
59c69c0c 128 struct ref *next = alloc_ref(buffer + 41);
cd547b48
JS
129 buffer[40] = '\0';
130 if (get_sha1_hex(buffer, next->old_sha1)) {
131 warning ("invalid SHA-1: %s", buffer);
132 free(next);
133 continue;
134 }
cd547b48
JS
135 next->next = (*list)->next;
136 (*list)->next = next;
137 list = &(*list)->next;
138 }
139 }
140}
141
e9fcd1e2
IL
142static void set_upstreams(struct transport *transport, struct ref *refs,
143 int pretend)
144{
145 struct ref *ref;
146 for (ref = refs; ref; ref = ref->next) {
147 const char *localname;
148 const char *tmp;
149 const char *remotename;
150 unsigned char sha[20];
151 int flag = 0;
152 /*
153 * Check suitability for tracking. Must be successful /
154 * already up-to-date ref create/modify (not delete).
155 */
156 if (ref->status != REF_STATUS_OK &&
157 ref->status != REF_STATUS_UPTODATE)
158 continue;
159 if (!ref->peer_ref)
160 continue;
5dd56489 161 if (is_null_sha1(ref->new_sha1))
e9fcd1e2
IL
162 continue;
163
164 /* Follow symbolic refs (mainly for HEAD). */
165 localname = ref->peer_ref->name;
166 remotename = ref->name;
8cad4744 167 tmp = resolve_ref_unsafe(localname, sha, 1, &flag);
e9fcd1e2
IL
168 if (tmp && flag & REF_ISSYMREF &&
169 !prefixcmp(tmp, "refs/heads/"))
170 localname = tmp;
171
172 /* Both source and destination must be local branches. */
173 if (!localname || prefixcmp(localname, "refs/heads/"))
174 continue;
175 if (!remotename || prefixcmp(remotename, "refs/heads/"))
176 continue;
177
178 if (!pretend)
179 install_branch_config(BRANCH_CONFIG_VERBOSE,
180 localname + 11, transport->remote->name,
181 remotename);
182 else
183 printf("Would set upstream of '%s' to '%s' of '%s'\n",
184 localname + 11, remotename + 11,
185 transport->remote->name);
186 }
187}
188
7efaeba2
JS
189static const char *rsync_url(const char *url)
190{
191 return prefixcmp(url, "rsync://") ? skip_prefix(url, "rsync:") : url;
192}
193
64fcef2d 194static struct ref *get_refs_via_rsync(struct transport *transport, int for_push)
cd547b48
JS
195{
196 struct strbuf buf = STRBUF_INIT, temp_dir = STRBUF_INIT;
c2e86add 197 struct ref dummy = {NULL}, *tail = &dummy;
cd547b48
JS
198 struct child_process rsync;
199 const char *args[5];
200 int temp_dir_len;
201
64fcef2d
DB
202 if (for_push)
203 return NULL;
204
cd547b48
JS
205 /* copy the refs to the temporary directory */
206
207 strbuf_addstr(&temp_dir, git_path("rsync-refs-XXXXXX"));
208 if (!mkdtemp(temp_dir.buf))
0721c314 209 die_errno ("Could not make temporary directory");
cd547b48
JS
210 temp_dir_len = temp_dir.len;
211
7efaeba2 212 strbuf_addstr(&buf, rsync_url(transport->url));
cd547b48
JS
213 strbuf_addstr(&buf, "/refs");
214
215 memset(&rsync, 0, sizeof(rsync));
216 rsync.argv = args;
217 rsync.stdout_to_stderr = 1;
218 args[0] = "rsync";
bd2c86ef 219 args[1] = (transport->verbose > 1) ? "-rv" : "-r";
cd547b48
JS
220 args[2] = buf.buf;
221 args[3] = temp_dir.buf;
222 args[4] = NULL;
223
224 if (run_command(&rsync))
225 die ("Could not run rsync to get refs");
226
227 strbuf_reset(&buf);
7efaeba2 228 strbuf_addstr(&buf, rsync_url(transport->url));
cd547b48
JS
229 strbuf_addstr(&buf, "/packed-refs");
230
231 args[2] = buf.buf;
232
233 if (run_command(&rsync))
234 die ("Could not run rsync to get refs");
235
236 /* read the copied refs */
237
238 strbuf_addstr(&temp_dir, "/refs");
239 read_loose_refs(&temp_dir, temp_dir_len + 1, &tail);
240 strbuf_setlen(&temp_dir, temp_dir_len);
241
242 tail = &dummy;
243 strbuf_addstr(&temp_dir, "/packed-refs");
244 insert_packed_refs(temp_dir.buf, &tail);
245 strbuf_setlen(&temp_dir, temp_dir_len);
246
247 if (remove_dir_recursively(&temp_dir, 0))
248 warning ("Error removing temporary directory %s.",
249 temp_dir.buf);
250
251 strbuf_release(&buf);
252 strbuf_release(&temp_dir);
253
254 return dummy.next;
255}
256
257static int fetch_objs_via_rsync(struct transport *transport,
37148311 258 int nr_objs, struct ref **to_fetch)
cd547b48
JS
259{
260 struct strbuf buf = STRBUF_INIT;
261 struct child_process rsync;
262 const char *args[8];
263 int result;
264
7efaeba2 265 strbuf_addstr(&buf, rsync_url(transport->url));
cd547b48
JS
266 strbuf_addstr(&buf, "/objects/");
267
268 memset(&rsync, 0, sizeof(rsync));
269 rsync.argv = args;
270 rsync.stdout_to_stderr = 1;
271 args[0] = "rsync";
bd2c86ef 272 args[1] = (transport->verbose > 1) ? "-rv" : "-r";
cd547b48
JS
273 args[2] = "--ignore-existing";
274 args[3] = "--exclude";
275 args[4] = "info";
276 args[5] = buf.buf;
277 args[6] = get_object_directory();
278 args[7] = NULL;
279
280 /* NEEDSWORK: handle one level of alternates */
281 result = run_command(&rsync);
282
283 strbuf_release(&buf);
284
285 return result;
286}
287
288static int write_one_ref(const char *name, const unsigned char *sha1,
289 int flags, void *data)
290{
291 struct strbuf *buf = data;
292 int len = buf->len;
293 FILE *f;
294
295 /* when called via for_each_ref(), flags is non-zero */
296 if (flags && prefixcmp(name, "refs/heads/") &&
297 prefixcmp(name, "refs/tags/"))
298 return 0;
299
300 strbuf_addstr(buf, name);
301 if (safe_create_leading_directories(buf->buf) ||
302 !(f = fopen(buf->buf, "w")) ||
303 fprintf(f, "%s\n", sha1_to_hex(sha1)) < 0 ||
304 fclose(f))
305 return error("problems writing temporary file %s", buf->buf);
306 strbuf_setlen(buf, len);
307 return 0;
308}
309
310static int write_refs_to_temp_dir(struct strbuf *temp_dir,
311 int refspec_nr, const char **refspec)
312{
313 int i;
314
315 for (i = 0; i < refspec_nr; i++) {
316 unsigned char sha1[20];
317 char *ref;
318
319 if (dwim_ref(refspec[i], strlen(refspec[i]), sha1, &ref) != 1)
320 return error("Could not get ref %s", refspec[i]);
321
322 if (write_one_ref(ref, sha1, 0, temp_dir)) {
323 free(ref);
324 return -1;
325 }
326 free(ref);
327 }
328 return 0;
329}
330
331static int rsync_transport_push(struct transport *transport,
332 int refspec_nr, const char **refspec, int flags)
333{
334 struct strbuf buf = STRBUF_INIT, temp_dir = STRBUF_INIT;
335 int result = 0, i;
336 struct child_process rsync;
ee020f35 337 const char *args[10];
cd547b48 338
94c89ba6
AW
339 if (flags & TRANSPORT_PUSH_MIRROR)
340 return error("rsync transport does not support mirror mode");
341
cd547b48
JS
342 /* first push the objects */
343
7efaeba2 344 strbuf_addstr(&buf, rsync_url(transport->url));
cd547b48
JS
345 strbuf_addch(&buf, '/');
346
347 memset(&rsync, 0, sizeof(rsync));
348 rsync.argv = args;
349 rsync.stdout_to_stderr = 1;
ee020f35
SP
350 i = 0;
351 args[i++] = "rsync";
352 args[i++] = "-a";
353 if (flags & TRANSPORT_PUSH_DRY_RUN)
354 args[i++] = "--dry-run";
bd2c86ef 355 if (transport->verbose > 1)
ee020f35
SP
356 args[i++] = "-v";
357 args[i++] = "--ignore-existing";
358 args[i++] = "--exclude";
359 args[i++] = "info";
360 args[i++] = get_object_directory();
361 args[i++] = buf.buf;
362 args[i++] = NULL;
cd547b48
JS
363
364 if (run_command(&rsync))
7efaeba2
JS
365 return error("Could not push objects to %s",
366 rsync_url(transport->url));
cd547b48
JS
367
368 /* copy the refs to the temporary directory; they could be packed. */
369
370 strbuf_addstr(&temp_dir, git_path("rsync-refs-XXXXXX"));
371 if (!mkdtemp(temp_dir.buf))
0721c314 372 die_errno ("Could not make temporary directory");
cd547b48
JS
373 strbuf_addch(&temp_dir, '/');
374
375 if (flags & TRANSPORT_PUSH_ALL) {
376 if (for_each_ref(write_one_ref, &temp_dir))
377 return -1;
378 } else if (write_refs_to_temp_dir(&temp_dir, refspec_nr, refspec))
379 return -1;
380
ee020f35
SP
381 i = 2;
382 if (flags & TRANSPORT_PUSH_DRY_RUN)
383 args[i++] = "--dry-run";
384 if (!(flags & TRANSPORT_PUSH_FORCE))
385 args[i++] = "--ignore-existing";
cd547b48 386 args[i++] = temp_dir.buf;
7efaeba2 387 args[i++] = rsync_url(transport->url);
cd547b48
JS
388 args[i++] = NULL;
389 if (run_command(&rsync))
7efaeba2
JS
390 result = error("Could not push to %s",
391 rsync_url(transport->url));
cd547b48
JS
392
393 if (remove_dir_recursively(&temp_dir, 0))
394 warning ("Could not remove temporary directory %s.",
395 temp_dir.buf);
396
397 strbuf_release(&buf);
398 strbuf_release(&temp_dir);
399
400 return result;
401}
c29727d5 402
c7a8a162
JS
403struct bundle_transport_data {
404 int fd;
405 struct bundle_header header;
406};
407
64fcef2d 408static struct ref *get_refs_from_bundle(struct transport *transport, int for_push)
c7a8a162
JS
409{
410 struct bundle_transport_data *data = transport->data;
411 struct ref *result = NULL;
412 int i;
413
64fcef2d
DB
414 if (for_push)
415 return NULL;
416
c7a8a162
JS
417 if (data->fd > 0)
418 close(data->fd);
419 data->fd = read_bundle_header(transport->url, &data->header);
420 if (data->fd < 0)
421 die ("Could not read bundle '%s'.", transport->url);
422 for (i = 0; i < data->header.references.nr; i++) {
423 struct ref_list_entry *e = data->header.references.list + i;
59c69c0c 424 struct ref *ref = alloc_ref(e->name);
c7a8a162 425 hashcpy(ref->old_sha1, e->sha1);
c7a8a162
JS
426 ref->next = result;
427 result = ref;
428 }
429 return result;
430}
431
1788c39c 432static int fetch_refs_from_bundle(struct transport *transport,
37148311 433 int nr_heads, struct ref **to_fetch)
c7a8a162
JS
434{
435 struct bundle_transport_data *data = transport->data;
be042aff
JH
436 return unbundle(&data->header, data->fd,
437 transport->progress ? BUNDLE_VERBOSE : 0);
c7a8a162
JS
438}
439
440static int close_bundle(struct transport *transport)
441{
442 struct bundle_transport_data *data = transport->data;
443 if (data->fd > 0)
444 close(data->fd);
f4e95765 445 free(data);
c7a8a162
JS
446 return 0;
447}
448
9b288516 449struct git_transport_data {
aa5af974 450 struct git_transport_options options;
ba227857
DB
451 struct child_process *conn;
452 int fd[2];
61b075bd 453 unsigned got_remote_heads : 1;
64fcef2d 454 struct extra_have_objects extra_have;
9b288516
DB
455};
456
aa5af974 457static int set_git_option(struct git_transport_options *opts,
9b288516
DB
458 const char *name, const char *value)
459{
c29727d5 460 if (!strcmp(name, TRANS_OPT_UPLOADPACK)) {
aa5af974 461 opts->uploadpack = value;
c29727d5
DB
462 return 0;
463 } else if (!strcmp(name, TRANS_OPT_RECEIVEPACK)) {
aa5af974 464 opts->receivepack = value;
9b288516
DB
465 return 0;
466 } else if (!strcmp(name, TRANS_OPT_THIN)) {
aa5af974 467 opts->thin = !!value;
9b288516 468 return 0;
41fa7d2e 469 } else if (!strcmp(name, TRANS_OPT_FOLLOWTAGS)) {
aa5af974 470 opts->followtags = !!value;
41fa7d2e 471 return 0;
c29727d5 472 } else if (!strcmp(name, TRANS_OPT_KEEP)) {
aa5af974 473 opts->keep = !!value;
c29727d5 474 return 0;
c29727d5
DB
475 } else if (!strcmp(name, TRANS_OPT_DEPTH)) {
476 if (!value)
aa5af974 477 opts->depth = 0;
e7622ce8
NTND
478 else {
479 char *end;
480 opts->depth = strtol(value, &end, 0);
481 if (*end)
482 die("transport: invalid depth option '%s'", value);
483 }
c29727d5 484 return 0;
9b288516
DB
485 }
486 return 1;
487}
488
64fcef2d 489static int connect_setup(struct transport *transport, int for_push, int verbose)
ba227857
DB
490{
491 struct git_transport_data *data = transport->data;
61b075bd
IL
492
493 if (data->conn)
494 return 0;
495
5a277f3f
JH
496 data->conn = git_connect(data->fd, transport->url,
497 for_push ? data->options.receivepack :
498 data->options.uploadpack,
64fcef2d 499 verbose ? CONNECT_VERBOSE : 0);
61b075bd 500
ba227857
DB
501 return 0;
502}
503
64fcef2d 504static struct ref *get_refs_via_connect(struct transport *transport, int for_push)
c29727d5
DB
505{
506 struct git_transport_data *data = transport->data;
507 struct ref *refs;
c29727d5 508
64fcef2d 509 connect_setup(transport, for_push, 0);
afe7c5ff 510 get_remote_heads(data->fd[0], &refs,
64fcef2d 511 for_push ? REF_NORMAL : 0, &data->extra_have);
61b075bd 512 data->got_remote_heads = 1;
c29727d5
DB
513
514 return refs;
515}
516
1788c39c 517static int fetch_refs_via_pack(struct transport *transport,
37148311 518 int nr_heads, struct ref **to_fetch)
c29727d5
DB
519{
520 struct git_transport_data *data = transport->data;
8bee93dd
MH
521 struct string_list orig_sought = STRING_LIST_INIT_DUP;
522 struct string_list sought = STRING_LIST_INIT_NODUP;
ba227857 523 const struct ref *refs;
c29727d5
DB
524 char *dest = xstrdup(transport->url);
525 struct fetch_pack_args args;
425b1393 526 int i;
00183cbb 527 struct ref *refs_tmp = NULL;
c29727d5 528
fa740529 529 memset(&args, 0, sizeof(args));
aa5af974
IL
530 args.uploadpack = data->options.uploadpack;
531 args.keep_pack = data->options.keep;
fa740529 532 args.lock_pack = 1;
aa5af974
IL
533 args.use_thin_pack = data->options.thin;
534 args.include_tag = data->options.followtags;
bd2c86ef 535 args.verbose = (transport->verbose > 1);
fe8aa148 536 args.quiet = (transport->verbose < 0);
d01b3c02 537 args.no_progress = !transport->progress;
aa5af974 538 args.depth = data->options.depth;
c29727d5 539
8bee93dd
MH
540 for (i = 0; i < nr_heads; i++) {
541 string_list_append(&orig_sought, to_fetch[i]->name);
542 string_list_append(&sought, orig_sought.items[orig_sought.nr - 1].string);
543 }
ba227857 544
61b075bd 545 if (!data->got_remote_heads) {
64fcef2d 546 connect_setup(transport, 0, 0);
afe7c5ff 547 get_remote_heads(data->fd[0], &refs_tmp, 0, NULL);
61b075bd 548 data->got_remote_heads = 1;
ba227857
DB
549 }
550
00183cbb
DB
551 refs = fetch_pack(&args, data->fd, data->conn,
552 refs_tmp ? refs_tmp : transport->remote_refs,
8bee93dd 553 dest, &sought, &transport->pack_lockfile);
ba227857
DB
554 close(data->fd[0]);
555 close(data->fd[1]);
556 if (finish_connect(data->conn))
557 refs = NULL;
558 data->conn = NULL;
61b075bd 559 data->got_remote_heads = 0;
c29727d5 560
00183cbb
DB
561 free_refs(refs_tmp);
562
8bee93dd
MH
563 string_list_clear(&sought, 0);
564 string_list_clear(&orig_sought, 0);
c29727d5 565 free(dest);
c6bc4005 566 return (refs ? 0 : -1);
c29727d5
DB
567}
568
481c7a6d
JK
569static int push_had_errors(struct ref *ref)
570{
571 for (; ref; ref = ref->next) {
572 switch (ref->status) {
573 case REF_STATUS_NONE:
574 case REF_STATUS_UPTODATE:
575 case REF_STATUS_OK:
576 break;
577 default:
578 return 1;
579 }
580 }
581 return 0;
582}
583
f1863d0d 584int transport_refs_pushed(struct ref *ref)
64fcef2d
DB
585{
586 for (; ref; ref = ref->next) {
587 switch(ref->status) {
588 case REF_STATUS_NONE:
589 case REF_STATUS_UPTODATE:
590 break;
591 default:
592 return 1;
593 }
594 }
595 return 0;
596}
597
f1863d0d 598void transport_update_tracking_ref(struct remote *remote, struct ref *ref, int verbose)
64fcef2d
DB
599{
600 struct refspec rs;
601
602 if (ref->status != REF_STATUS_OK && ref->status != REF_STATUS_UPTODATE)
603 return;
604
605 rs.src = ref->name;
606 rs.dst = NULL;
607
608 if (!remote_find_tracking(remote, &rs)) {
609 if (verbose)
610 fprintf(stderr, "updating local tracking ref '%s'\n", rs.dst);
611 if (ref->deletion) {
612 delete_ref(rs.dst, NULL, 0);
613 } else
614 update_ref("update by push", rs.dst,
615 ref->new_sha1, NULL, 0, 0);
616 free(rs.dst);
617 }
618}
619
1965ff74 620static void print_ref_status(char flag, const char *summary, struct ref *to, struct ref *from, const char *msg, int porcelain)
64fcef2d 621{
1965ff74
LA
622 if (porcelain) {
623 if (from)
624 fprintf(stdout, "%c\t%s:%s\t", flag, from->name, to->name);
625 else
626 fprintf(stdout, "%c\t:%s\t", flag, to->name);
627 if (msg)
628 fprintf(stdout, "%s (%s)\n", summary, msg);
629 else
630 fprintf(stdout, "%s\n", summary);
631 } else {
f1863d0d 632 fprintf(stderr, " %c %-*s ", flag, TRANSPORT_SUMMARY_WIDTH, summary);
1965ff74
LA
633 if (from)
634 fprintf(stderr, "%s -> %s", prettify_refname(from->name), prettify_refname(to->name));
635 else
636 fputs(prettify_refname(to->name), stderr);
637 if (msg) {
638 fputs(" (", stderr);
639 fputs(msg, stderr);
640 fputc(')', stderr);
641 }
642 fputc('\n', stderr);
64fcef2d 643 }
64fcef2d
DB
644}
645
646static const char *status_abbrev(unsigned char sha1[20])
647{
648 return find_unique_abbrev(sha1, DEFAULT_ABBREV);
649}
650
1965ff74 651static void print_ok_ref_status(struct ref *ref, int porcelain)
64fcef2d
DB
652{
653 if (ref->deletion)
1965ff74 654 print_ref_status('-', "[deleted]", ref, NULL, NULL, porcelain);
64fcef2d
DB
655 else if (is_null_sha1(ref->old_sha1))
656 print_ref_status('*',
657 (!prefixcmp(ref->name, "refs/tags/") ? "[new tag]" :
1965ff74
LA
658 "[new branch]"),
659 ref, ref->peer_ref, NULL, porcelain);
64fcef2d
DB
660 else {
661 char quickref[84];
662 char type;
663 const char *msg;
664
665 strcpy(quickref, status_abbrev(ref->old_sha1));
666 if (ref->nonfastforward) {
667 strcat(quickref, "...");
668 type = '+';
669 msg = "forced update";
670 } else {
671 strcat(quickref, "..");
672 type = ' ';
673 msg = NULL;
674 }
675 strcat(quickref, status_abbrev(ref->new_sha1));
676
1965ff74 677 print_ref_status(type, quickref, ref, ref->peer_ref, msg, porcelain);
64fcef2d
DB
678 }
679}
680
1965ff74 681static int print_one_push_status(struct ref *ref, const char *dest, int count, int porcelain)
64fcef2d
DB
682{
683 if (!count)
60cfeb8e 684 fprintf(porcelain ? stdout : stderr, "To %s\n", dest);
64fcef2d
DB
685
686 switch(ref->status) {
687 case REF_STATUS_NONE:
1965ff74 688 print_ref_status('X', "[no match]", ref, NULL, NULL, porcelain);
64fcef2d
DB
689 break;
690 case REF_STATUS_REJECT_NODELETE:
691 print_ref_status('!', "[rejected]", ref, NULL,
1965ff74 692 "remote does not support deleting refs", porcelain);
64fcef2d
DB
693 break;
694 case REF_STATUS_UPTODATE:
695 print_ref_status('=', "[up to date]", ref,
1965ff74 696 ref->peer_ref, NULL, porcelain);
64fcef2d
DB
697 break;
698 case REF_STATUS_REJECT_NONFASTFORWARD:
699 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
a75d7b54 700 "non-fast-forward", porcelain);
64fcef2d
DB
701 break;
702 case REF_STATUS_REMOTE_REJECT:
703 print_ref_status('!', "[remote rejected]", ref,
1965ff74
LA
704 ref->deletion ? NULL : ref->peer_ref,
705 ref->remote_status, porcelain);
64fcef2d
DB
706 break;
707 case REF_STATUS_EXPECTING_REPORT:
708 print_ref_status('!', "[remote failure]", ref,
1965ff74
LA
709 ref->deletion ? NULL : ref->peer_ref,
710 "remote failed to report status", porcelain);
64fcef2d
DB
711 break;
712 case REF_STATUS_OK:
1965ff74 713 print_ok_ref_status(ref, porcelain);
64fcef2d
DB
714 break;
715 }
716
717 return 1;
718}
719
f1863d0d
ML
720void transport_print_push_status(const char *dest, struct ref *refs,
721 int verbose, int porcelain, int *nonfastforward)
64fcef2d
DB
722{
723 struct ref *ref;
724 int n = 0;
f25950f3
CT
725 unsigned char head_sha1[20];
726 char *head;
727
728 head = resolve_refdup("HEAD", head_sha1, 1, NULL);
64fcef2d
DB
729
730 if (verbose) {
731 for (ref = refs; ref; ref = ref->next)
732 if (ref->status == REF_STATUS_UPTODATE)
1965ff74 733 n += print_one_push_status(ref, dest, n, porcelain);
64fcef2d
DB
734 }
735
736 for (ref = refs; ref; ref = ref->next)
737 if (ref->status == REF_STATUS_OK)
1965ff74 738 n += print_one_push_status(ref, dest, n, porcelain);
64fcef2d 739
07436e43 740 *nonfastforward = 0;
64fcef2d
DB
741 for (ref = refs; ref; ref = ref->next) {
742 if (ref->status != REF_STATUS_NONE &&
743 ref->status != REF_STATUS_UPTODATE &&
744 ref->status != REF_STATUS_OK)
1965ff74 745 n += print_one_push_status(ref, dest, n, porcelain);
f25950f3
CT
746 if (ref->status == REF_STATUS_REJECT_NONFASTFORWARD &&
747 *nonfastforward != NON_FF_HEAD) {
748 if (!strcmp(head, ref->name))
749 *nonfastforward = NON_FF_HEAD;
750 else
751 *nonfastforward = NON_FF_OTHER;
752 }
64fcef2d
DB
753 }
754}
755
f1863d0d 756void transport_verify_remote_names(int nr_heads, const char **heads)
64fcef2d
DB
757{
758 int i;
759
760 for (i = 0; i < nr_heads; i++) {
761 const char *local = heads[i];
762 const char *remote = strrchr(heads[i], ':');
763
764 if (*local == '+')
765 local++;
766
767 /* A matching refspec is okay. */
768 if (remote == local && remote[1] == '\0')
769 continue;
770
771 remote = remote ? (remote + 1) : local;
8d9c5010
MH
772 if (check_refname_format(remote,
773 REFNAME_ALLOW_ONELEVEL|REFNAME_REFSPEC_PATTERN))
774 die("remote part of refspec is not a valid name in %s",
775 heads[i]);
64fcef2d
DB
776 }
777}
778
779static int git_transport_push(struct transport *transport, struct ref *remote_refs, int flags)
f3fa1838 780{
9b288516 781 struct git_transport_data *data = transport->data;
40cb4fab 782 struct send_pack_args args;
64fcef2d
DB
783 int ret;
784
61b075bd 785 if (!data->got_remote_heads) {
64fcef2d
DB
786 struct ref *tmp_refs;
787 connect_setup(transport, 1, 0);
788
afe7c5ff 789 get_remote_heads(data->fd[0], &tmp_refs, REF_NORMAL, NULL);
61b075bd 790 data->got_remote_heads = 1;
64fcef2d 791 }
9b288516 792
de1a2fdd 793 memset(&args, 0, sizeof(args));
94c89ba6 794 args.send_mirror = !!(flags & TRANSPORT_PUSH_MIRROR);
40cb4fab 795 args.force_update = !!(flags & TRANSPORT_PUSH_FORCE);
aa5af974 796 args.use_thin_pack = data->options.thin;
8afd8dc0
TRC
797 args.verbose = (transport->verbose > 0);
798 args.quiet = (transport->verbose < 0);
d7c411b7 799 args.progress = transport->progress;
40cb4fab 800 args.dry_run = !!(flags & TRANSPORT_PUSH_DRY_RUN);
77555854 801 args.porcelain = !!(flags & TRANSPORT_PUSH_PORCELAIN);
40cb4fab 802
64fcef2d
DB
803 ret = send_pack(&args, data->fd, data->conn, remote_refs,
804 &data->extra_have);
805
806 close(data->fd[1]);
807 close(data->fd[0]);
808 ret |= finish_connect(data->conn);
809 data->conn = NULL;
61b075bd 810 data->got_remote_heads = 0;
64fcef2d
DB
811
812 return ret;
9b288516
DB
813}
814
b236752a
IL
815static int connect_git(struct transport *transport, const char *name,
816 const char *executable, int fd[2])
817{
818 struct git_transport_data *data = transport->data;
819 data->conn = git_connect(data->fd, transport->url,
820 executable, 0);
821 fd[0] = data->fd[0];
822 fd[1] = data->fd[1];
823 return 0;
824}
825
f4e95765
SP
826static int disconnect_git(struct transport *transport)
827{
ba227857
DB
828 struct git_transport_data *data = transport->data;
829 if (data->conn) {
61b075bd
IL
830 if (data->got_remote_heads)
831 packet_flush(data->fd[1]);
ba227857
DB
832 close(data->fd[0]);
833 close(data->fd[1]);
834 finish_connect(data->conn);
835 }
836
837 free(data);
f4e95765
SP
838 return 0;
839}
840
61b075bd
IL
841void transport_take_over(struct transport *transport,
842 struct child_process *child)
843{
844 struct git_transport_data *data;
845
846 if (!transport->smart_options)
847 die("Bug detected: Taking over transport requires non-NULL "
848 "smart_options field.");
849
850 data = xcalloc(1, sizeof(*data));
851 data->options = *transport->smart_options;
852 data->conn = child;
853 data->fd[0] = data->conn->out;
854 data->fd[1] = data->conn->in;
855 data->got_remote_heads = 0;
856 transport->data = data;
857
858 transport->set_option = NULL;
859 transport->get_refs_list = get_refs_via_connect;
860 transport->fetch = fetch_refs_via_pack;
861 transport->push = NULL;
862 transport->push_refs = git_transport_push;
863 transport->disconnect = disconnect_git;
864 transport->smart_options = &(data->options);
865}
866
9b288516
DB
867static int is_local(const char *url)
868{
869 const char *colon = strchr(url, ':');
870 const char *slash = strchr(url, '/');
be501813
JS
871 return !colon || (slash && slash < colon) ||
872 has_dos_drive_prefix(url);
9b288516
DB
873}
874
875static int is_file(const char *url)
876{
877 struct stat buf;
878 if (stat(url, &buf))
879 return 0;
880 return S_ISREG(buf.st_mode);
881}
882
25d5cc48
IL
883static int external_specification_len(const char *url)
884{
885 return strchr(url, ':') - url;
886}
887
e5f4e214 888struct transport *transport_get(struct remote *remote, const char *url)
9b288516 889{
4da50460 890 const char *helper;
8eb554ae
SP
891 struct transport *ret = xcalloc(1, sizeof(*ret));
892
d01b3c02
TRC
893 ret->progress = isatty(2);
894
c1d45cf7
DB
895 if (!remote)
896 die("No remote provided to transport_get()");
897
b0d66e15 898 ret->got_remote_refs = 0;
8eb554ae 899 ret->remote = remote;
4da50460 900 helper = remote->foreign_vcs;
fb0cc87e 901
cb21d8f0 902 if (!url && remote->url)
fb0cc87e 903 url = remote->url[0];
8eb554ae 904 ret->url = url;
8eb554ae 905
87422439
JS
906 /* maybe it is a foreign URL? */
907 if (url) {
908 const char *p = url;
909
638794cd 910 while (is_urlschemechar(p == url, *p))
87422439
JS
911 p++;
912 if (!prefixcmp(p, "::"))
4da50460 913 helper = xstrndup(url, p - url);
87422439
JS
914 }
915
4da50460
IL
916 if (helper) {
917 transport_helper_init(ret, helper);
25d5cc48 918 } else if (!prefixcmp(url, "rsync:")) {
cd547b48
JS
919 ret->get_refs_list = get_refs_via_rsync;
920 ret->fetch = fetch_objs_via_rsync;
921 ret->push = rsync_transport_push;
aa5af974 922 ret->smart_options = NULL;
2727b71f 923 } else if (is_local(url) && is_file(url) && is_bundle(url, 1)) {
c7a8a162 924 struct bundle_transport_data *data = xcalloc(1, sizeof(*data));
c7a8a162 925 ret->data = data;
824d5776
SP
926 ret->get_refs_list = get_refs_from_bundle;
927 ret->fetch = fetch_refs_from_bundle;
928 ret->disconnect = close_bundle;
aa5af974 929 ret->smart_options = NULL;
25d5cc48
IL
930 } else if (!is_url(url)
931 || !prefixcmp(url, "file://")
932 || !prefixcmp(url, "git://")
933 || !prefixcmp(url, "ssh://")
934 || !prefixcmp(url, "git+ssh://")
935 || !prefixcmp(url, "ssh+git://")) {
936 /* These are builtin smart transports. */
9b288516 937 struct git_transport_data *data = xcalloc(1, sizeof(*data));
9b288516 938 ret->data = data;
aa5af974 939 ret->set_option = NULL;
824d5776
SP
940 ret->get_refs_list = get_refs_via_connect;
941 ret->fetch = fetch_refs_via_pack;
64fcef2d 942 ret->push_refs = git_transport_push;
b236752a 943 ret->connect = connect_git;
f4e95765 944 ret->disconnect = disconnect_git;
aa5af974 945 ret->smart_options = &(data->options);
824d5776 946
ba227857 947 data->conn = NULL;
61b075bd 948 data->got_remote_heads = 0;
25d5cc48
IL
949 } else {
950 /* Unknown protocol in URL. Pass to external handler. */
951 int len = external_specification_len(url);
952 char *handler = xmalloc(len + 1);
953 handler[len] = 0;
954 strncpy(handler, url, len);
955 transport_helper_init(ret, handler);
9b288516 956 }
8eb554ae 957
aa5af974
IL
958 if (ret->smart_options) {
959 ret->smart_options->thin = 1;
960 ret->smart_options->uploadpack = "git-upload-pack";
961 if (remote->uploadpack)
962 ret->smart_options->uploadpack = remote->uploadpack;
963 ret->smart_options->receivepack = "git-receive-pack";
964 if (remote->receivepack)
965 ret->smart_options->receivepack = remote->receivepack;
966 }
967
9b288516
DB
968 return ret;
969}
970
971int transport_set_option(struct transport *transport,
972 const char *name, const char *value)
973{
aa5af974
IL
974 int git_reports = 1, protocol_reports = 1;
975
976 if (transport->smart_options)
977 git_reports = set_git_option(transport->smart_options,
978 name, value);
979
824d5776 980 if (transport->set_option)
aa5af974
IL
981 protocol_reports = transport->set_option(transport, name,
982 value);
983
984 /* If either report is 0, report 0 (success). */
985 if (!git_reports || !protocol_reports)
986 return 0;
987 /* If either reports -1 (invalid value), report -1. */
988 if ((git_reports == -1) || (protocol_reports == -1))
989 return -1;
990 /* Otherwise if both report unknown, report unknown. */
ab865e6e 991 return 1;
9b288516
DB
992}
993
d01b3c02
TRC
994void transport_set_verbosity(struct transport *transport, int verbosity,
995 int force_progress)
bde873c5 996{
bd2c86ef 997 if (verbosity >= 1)
bde873c5
TRC
998 transport->verbose = verbosity <= 3 ? verbosity : 3;
999 if (verbosity < 0)
1000 transport->verbose = -1;
d01b3c02
TRC
1001
1002 /**
1003 * Rules used to determine whether to report progress (processing aborts
1004 * when a rule is satisfied):
1005 *
01fdc21f
CB
1006 * . Report progress, if force_progress is 1 (ie. --progress).
1007 * . Don't report progress, if force_progress is 0 (ie. --no-progress).
1008 * . Don't report progress, if verbosity < 0 (ie. -q/--quiet ).
1009 * . Report progress if isatty(2) is 1.
d01b3c02 1010 **/
01fdc21f
CB
1011 if (force_progress >= 0)
1012 transport->progress = !!force_progress;
1013 else
1014 transport->progress = verbosity >= 0 && isatty(2);
bde873c5
TRC
1015}
1016
a762e51e
HV
1017static void die_with_unpushed_submodules(struct string_list *needs_pushing)
1018{
1019 int i;
1020
1021 fprintf(stderr, "The following submodule paths contain changes that can\n"
1022 "not be found on any remote:\n");
1023 for (i = 0; i < needs_pushing->nr; i++)
1024 printf(" %s\n", needs_pushing->items[i].string);
eb21c732
HV
1025 fprintf(stderr, "\nPlease try\n\n"
1026 " git push --recurse-submodules=on-demand\n\n"
1027 "or cd to the path and use\n\n"
1028 " git push\n\n"
1029 "to push them to a remote.\n\n");
a762e51e
HV
1030
1031 string_list_clear(needs_pushing, 0);
1032
1033 die("Aborting.");
1034}
1035
9b288516 1036int transport_push(struct transport *transport,
07436e43 1037 int refspec_nr, const char **refspec, int flags,
bb8cccd0 1038 int *nonfastforward)
9b288516 1039{
bb8cccd0 1040 *nonfastforward = 0;
f1863d0d 1041 transport_verify_remote_names(refspec_nr, refspec);
64fcef2d 1042
61b075bd 1043 if (transport->push) {
e9fcd1e2
IL
1044 /* Maybe FIXME. But no important transport uses this case. */
1045 if (flags & TRANSPORT_PUSH_SET_UPSTREAM)
1046 die("This transport does not support using --set-upstream");
1047
64fcef2d 1048 return transport->push(transport, refspec_nr, refspec, flags);
61b075bd 1049 } else if (transport->push_refs) {
64fcef2d
DB
1050 struct ref *remote_refs =
1051 transport->get_refs_list(transport, 1);
64fcef2d
DB
1052 struct ref *local_refs = get_local_heads();
1053 int match_flags = MATCH_REFS_NONE;
8afd8dc0
TRC
1054 int verbose = (transport->verbose > 0);
1055 int quiet = (transport->verbose < 0);
1965ff74 1056 int porcelain = flags & TRANSPORT_PUSH_PORCELAIN;
e9fcd1e2 1057 int pretend = flags & TRANSPORT_PUSH_DRY_RUN;
77555854 1058 int push_ret, ret, err;
64fcef2d
DB
1059
1060 if (flags & TRANSPORT_PUSH_ALL)
1061 match_flags |= MATCH_REFS_ALL;
1062 if (flags & TRANSPORT_PUSH_MIRROR)
1063 match_flags |= MATCH_REFS_MIRROR;
6ddba5e2
FC
1064 if (flags & TRANSPORT_PUSH_PRUNE)
1065 match_flags |= MATCH_REFS_PRUNE;
64fcef2d 1066
29753cdd
JH
1067 if (match_push_refs(local_refs, &remote_refs,
1068 refspec_nr, refspec, match_flags)) {
64fcef2d
DB
1069 return -1;
1070 }
1071
20e8b465
TRC
1072 set_ref_status_for_push(remote_refs,
1073 flags & TRANSPORT_PUSH_MIRROR,
1074 flags & TRANSPORT_PUSH_FORCE);
1075
eb21c732 1076 if ((flags & TRANSPORT_RECURSE_SUBMODULES_ON_DEMAND) && !is_bare_repository()) {
d2b17b32
FG
1077 struct ref *ref = remote_refs;
1078 for (; ref; ref = ref->next)
1079 if (!is_null_sha1(ref->new_sha1) &&
eb21c732
HV
1080 !push_unpushed_submodules(ref->new_sha1,
1081 transport->remote->name))
1082 die ("Failed to push all needed submodules!");
1083 }
1084
1085 if ((flags & (TRANSPORT_RECURSE_SUBMODULES_ON_DEMAND |
1086 TRANSPORT_RECURSE_SUBMODULES_CHECK)) && !is_bare_repository()) {
d2b17b32 1087 struct ref *ref = remote_refs;
a762e51e
HV
1088 struct string_list needs_pushing;
1089
1090 memset(&needs_pushing, 0, sizeof(struct string_list));
1091 needs_pushing.strdup_strings = 1;
d2b17b32
FG
1092 for (; ref; ref = ref->next)
1093 if (!is_null_sha1(ref->new_sha1) &&
a762e51e
HV
1094 find_unpushed_submodules(ref->new_sha1,
1095 transport->remote->name, &needs_pushing))
1096 die_with_unpushed_submodules(&needs_pushing);
d2b17b32
FG
1097 }
1098
77555854 1099 push_ret = transport->push_refs(transport, remote_refs, flags);
42328267 1100 err = push_had_errors(remote_refs);
77555854 1101 ret = push_ret | err;
64fcef2d 1102
42328267 1103 if (!quiet || err)
f1863d0d 1104 transport_print_push_status(transport->url, remote_refs,
6ffd7812
JH
1105 verbose | porcelain, porcelain,
1106 nonfastforward);
64fcef2d 1107
e9fcd1e2
IL
1108 if (flags & TRANSPORT_PUSH_SET_UPSTREAM)
1109 set_upstreams(transport, remote_refs, pretend);
1110
64fcef2d
DB
1111 if (!(flags & TRANSPORT_PUSH_DRY_RUN)) {
1112 struct ref *ref;
1113 for (ref = remote_refs; ref; ref = ref->next)
f1863d0d 1114 transport_update_tracking_ref(transport->remote, ref, verbose);
64fcef2d
DB
1115 }
1116
77555854
LA
1117 if (porcelain && !push_ret)
1118 puts("Done");
66bce02e 1119 else if (!quiet && !ret && !transport_refs_pushed(remote_refs))
64fcef2d 1120 fprintf(stderr, "Everything up-to-date\n");
77555854 1121
64fcef2d
DB
1122 return ret;
1123 }
1124 return 1;
9b288516
DB
1125}
1126
4577370e 1127const struct ref *transport_get_remote_refs(struct transport *transport)
c29727d5 1128{
b0d66e15 1129 if (!transport->got_remote_refs) {
64fcef2d 1130 transport->remote_refs = transport->get_refs_list(transport, 0);
b0d66e15
TRC
1131 transport->got_remote_refs = 1;
1132 }
61b075bd 1133
c29727d5
DB
1134 return transport->remote_refs;
1135}
1136
37148311 1137int transport_fetch_refs(struct transport *transport, struct ref *refs)
c29727d5 1138{
425b1393 1139 int rc;
86386829 1140 int nr_heads = 0, nr_alloc = 0, nr_refs = 0;
37148311
DB
1141 struct ref **heads = NULL;
1142 struct ref *rm;
c29727d5
DB
1143
1144 for (rm = refs; rm; rm = rm->next) {
86386829 1145 nr_refs++;
c29727d5 1146 if (rm->peer_ref &&
37148311 1147 !is_null_sha1(rm->old_sha1) &&
c29727d5
DB
1148 !hashcmp(rm->peer_ref->old_sha1, rm->old_sha1))
1149 continue;
7a2bff45 1150 ALLOC_GROW(heads, nr_heads + 1, nr_alloc);
425b1393 1151 heads[nr_heads++] = rm;
c29727d5
DB
1152 }
1153
86386829
NP
1154 if (!nr_heads) {
1155 /*
1156 * When deepening of a shallow repository is requested,
1157 * then local and remote refs are likely to still be equal.
1158 * Just feed them all to the fetch method in that case.
1159 * This condition shouldn't be met in a non-deepening fetch
1160 * (see builtin-fetch.c:quickfetch()).
1161 */
1162 heads = xmalloc(nr_refs * sizeof(*heads));
1163 for (rm = refs; rm; rm = rm->next)
1164 heads[nr_heads++] = rm;
1165 }
1166
824d5776 1167 rc = transport->fetch(transport, nr_heads, heads);
61b075bd 1168
c29727d5 1169 free(heads);
425b1393 1170 return rc;
c29727d5
DB
1171}
1172
1788c39c
SP
1173void transport_unlock_pack(struct transport *transport)
1174{
1175 if (transport->pack_lockfile) {
691f1a28 1176 unlink_or_warn(transport->pack_lockfile);
1788c39c
SP
1177 free(transport->pack_lockfile);
1178 transport->pack_lockfile = NULL;
1179 }
1180}
1181
b236752a
IL
1182int transport_connect(struct transport *transport, const char *name,
1183 const char *exec, int fd[2])
1184{
1185 if (transport->connect)
1186 return transport->connect(transport, name, exec, fd);
1187 else
1188 die("Operation not supported by protocol");
1189}
1190
9b288516
DB
1191int transport_disconnect(struct transport *transport)
1192{
1193 int ret = 0;
824d5776
SP
1194 if (transport->disconnect)
1195 ret = transport->disconnect(transport);
9b288516
DB
1196 free(transport);
1197 return ret;
1198}
47abd85b
AE
1199
1200/*
a7793a74 1201 * Strip username (and password) from a URL and return
47abd85b
AE
1202 * it in a newly allocated string.
1203 */
1204char *transport_anonymize_url(const char *url)
1205{
1206 char *anon_url, *scheme_prefix, *anon_part;
1207 size_t anon_len, prefix_len = 0;
1208
1209 anon_part = strchr(url, '@');
1210 if (is_local(url) || !anon_part)
1211 goto literal_copy;
1212
1213 anon_len = strlen(++anon_part);
1214 scheme_prefix = strstr(url, "://");
1215 if (!scheme_prefix) {
1216 if (!strchr(anon_part, ':'))
1217 /* cannot be "me@there:/path/name" */
1218 goto literal_copy;
1219 } else {
1220 const char *cp;
1221 /* make sure scheme is reasonable */
1222 for (cp = url; cp < scheme_prefix; cp++) {
1223 switch (*cp) {
1224 /* RFC 1738 2.1 */
1225 case '+': case '.': case '-':
1226 break; /* ok */
1227 default:
1228 if (isalnum(*cp))
1229 break;
1230 /* it isn't */
1231 goto literal_copy;
1232 }
1233 }
1234 /* @ past the first slash does not count */
1235 cp = strchr(scheme_prefix + 3, '/');
1236 if (cp && cp < anon_part)
1237 goto literal_copy;
1238 prefix_len = scheme_prefix - url + 3;
1239 }
1240 anon_url = xcalloc(1, 1 + prefix_len + anon_len);
1241 memcpy(anon_url, url, prefix_len);
1242 memcpy(anon_url + prefix_len, anon_part, anon_len);
1243 return anon_url;
1244literal_copy:
1245 return xstrdup(url);
1246}
36cfda15 1247
114a6a88
JK
1248struct alternate_refs_data {
1249 alternate_ref_fn *fn;
1250 void *data;
1251};
1252
1253static int refs_from_alternate_cb(struct alternate_object_database *e,
1254 void *data)
36cfda15
JH
1255{
1256 char *other;
1257 size_t len;
1258 struct remote *remote;
1259 struct transport *transport;
1260 const struct ref *extra;
114a6a88 1261 struct alternate_refs_data *cb = data;
36cfda15
JH
1262
1263 e->name[-1] = '\0';
91b3c7ce 1264 other = xstrdup(real_path(e->base));
36cfda15
JH
1265 e->name[-1] = '/';
1266 len = strlen(other);
1267
1268 while (other[len-1] == '/')
1269 other[--len] = '\0';
1270 if (len < 8 || memcmp(other + len - 8, "/objects", 8))
1271 return 0;
1272 /* Is this a git repository with refs? */
1273 memcpy(other + len - 8, "/refs", 6);
1274 if (!is_directory(other))
1275 return 0;
1276 other[len - 8] = '\0';
1277 remote = remote_get(other);
1278 transport = transport_get(remote, other);
1279 for (extra = transport_get_remote_refs(transport);
1280 extra;
1281 extra = extra->next)
114a6a88 1282 cb->fn(extra, cb->data);
36cfda15
JH
1283 transport_disconnect(transport);
1284 free(other);
1285 return 0;
1286}
114a6a88
JK
1287
1288void for_each_alternate_ref(alternate_ref_fn fn, void *data)
1289{
1290 struct alternate_refs_data cb;
1291 cb.fn = fn;
1292 cb.data = data;
1293 foreach_alt_odb(refs_from_alternate_cb, &cb);
1294}