receive-pack: allow pushes that update .git/shallow
[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"
47a59185
JH
6#include "remote.h"
7#include "connect.h"
40cb4fab 8#include "send-pack.h"
c29727d5 9#include "walker.h"
c7a8a162 10#include "bundle.h"
cd547b48
JS
11#include "dir.h"
12#include "refs.h"
e9fcd1e2 13#include "branch.h"
638794cd 14#include "url.h"
d2b17b32 15#include "submodule.h"
a762e51e 16#include "string-list.h"
13eb4626 17#include "sha1-array.h"
cd547b48
JS
18
19/* rsync support */
20
21/*
22 * We copy packed-refs and refs/ into a temporary file, then read the
23 * loose refs recursively (sorting whenever possible), and then inserting
24 * those packed refs that are not yet in the list (not validating, but
25 * assuming that the file is sorted).
26 *
27 * Appears refactoring this from refs.c is too cumbersome.
28 */
29
30static int str_cmp(const void *a, const void *b)
31{
32 const char *s1 = a;
33 const char *s2 = b;
34
35 return strcmp(s1, s2);
36}
37
38/* path->buf + name_offset is expected to point to "refs/" */
39
40static int read_loose_refs(struct strbuf *path, int name_offset,
41 struct ref **tail)
42{
43 DIR *dir = opendir(path->buf);
44 struct dirent *de;
45 struct {
46 char **entries;
47 int nr, alloc;
48 } list;
49 int i, pathlen;
50
51 if (!dir)
52 return -1;
53
54 memset (&list, 0, sizeof(list));
55
56 while ((de = readdir(dir))) {
8ca12c0d 57 if (is_dot_or_dotdot(de->d_name))
cd547b48
JS
58 continue;
59 ALLOC_GROW(list.entries, list.nr + 1, list.alloc);
60 list.entries[list.nr++] = xstrdup(de->d_name);
61 }
62 closedir(dir);
63
64 /* sort the list */
65
66 qsort(list.entries, list.nr, sizeof(char *), str_cmp);
67
68 pathlen = path->len;
69 strbuf_addch(path, '/');
70
71 for (i = 0; i < list.nr; i++, strbuf_setlen(path, pathlen + 1)) {
72 strbuf_addstr(path, list.entries[i]);
73 if (read_loose_refs(path, name_offset, tail)) {
74 int fd = open(path->buf, O_RDONLY);
75 char buffer[40];
76 struct ref *next;
77
78 if (fd < 0)
79 continue;
59c69c0c 80 next = alloc_ref(path->buf + name_offset);
cd547b48
JS
81 if (read_in_full(fd, buffer, 40) != 40 ||
82 get_sha1_hex(buffer, next->old_sha1)) {
83 close(fd);
84 free(next);
85 continue;
86 }
87 close(fd);
cd547b48
JS
88 (*tail)->next = next;
89 *tail = next;
90 }
91 }
92 strbuf_setlen(path, pathlen);
93
94 for (i = 0; i < list.nr; i++)
95 free(list.entries[i]);
96 free(list.entries);
97
98 return 0;
99}
100
101/* insert the packed refs for which no loose refs were found */
102
103static void insert_packed_refs(const char *packed_refs, struct ref **list)
104{
105 FILE *f = fopen(packed_refs, "r");
106 static char buffer[PATH_MAX];
107
108 if (!f)
109 return;
110
111 for (;;) {
04fe1184
JH
112 int cmp = 0; /* assigned before used */
113 int len;
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JS
114
115 if (!fgets(buffer, sizeof(buffer), f)) {
116 fclose(f);
117 return;
118 }
119
120 if (hexval(buffer[0]) > 0xf)
121 continue;
122 len = strlen(buffer);
872c930d 123 if (len && buffer[len - 1] == '\n')
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JS
124 buffer[--len] = '\0';
125 if (len < 41)
126 continue;
127 while ((*list)->next &&
128 (cmp = strcmp(buffer + 41,
129 (*list)->next->name)) > 0)
130 list = &(*list)->next;
131 if (!(*list)->next || cmp < 0) {
59c69c0c 132 struct ref *next = alloc_ref(buffer + 41);
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JS
133 buffer[40] = '\0';
134 if (get_sha1_hex(buffer, next->old_sha1)) {
135 warning ("invalid SHA-1: %s", buffer);
136 free(next);
137 continue;
138 }
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JS
139 next->next = (*list)->next;
140 (*list)->next = next;
141 list = &(*list)->next;
142 }
143 }
144}
145
e9fcd1e2
IL
146static void set_upstreams(struct transport *transport, struct ref *refs,
147 int pretend)
148{
149 struct ref *ref;
150 for (ref = refs; ref; ref = ref->next) {
151 const char *localname;
152 const char *tmp;
153 const char *remotename;
154 unsigned char sha[20];
155 int flag = 0;
156 /*
157 * Check suitability for tracking. Must be successful /
158 * already up-to-date ref create/modify (not delete).
159 */
160 if (ref->status != REF_STATUS_OK &&
161 ref->status != REF_STATUS_UPTODATE)
162 continue;
163 if (!ref->peer_ref)
164 continue;
5dd56489 165 if (is_null_sha1(ref->new_sha1))
e9fcd1e2
IL
166 continue;
167
168 /* Follow symbolic refs (mainly for HEAD). */
169 localname = ref->peer_ref->name;
170 remotename = ref->name;
8cad4744 171 tmp = resolve_ref_unsafe(localname, sha, 1, &flag);
e9fcd1e2
IL
172 if (tmp && flag & REF_ISSYMREF &&
173 !prefixcmp(tmp, "refs/heads/"))
174 localname = tmp;
175
176 /* Both source and destination must be local branches. */
177 if (!localname || prefixcmp(localname, "refs/heads/"))
178 continue;
179 if (!remotename || prefixcmp(remotename, "refs/heads/"))
180 continue;
181
182 if (!pretend)
183 install_branch_config(BRANCH_CONFIG_VERBOSE,
184 localname + 11, transport->remote->name,
185 remotename);
186 else
187 printf("Would set upstream of '%s' to '%s' of '%s'\n",
188 localname + 11, remotename + 11,
189 transport->remote->name);
190 }
191}
192
7efaeba2
JS
193static const char *rsync_url(const char *url)
194{
195 return prefixcmp(url, "rsync://") ? skip_prefix(url, "rsync:") : url;
196}
197
64fcef2d 198static struct ref *get_refs_via_rsync(struct transport *transport, int for_push)
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JS
199{
200 struct strbuf buf = STRBUF_INIT, temp_dir = STRBUF_INIT;
c2e86add 201 struct ref dummy = {NULL}, *tail = &dummy;
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JS
202 struct child_process rsync;
203 const char *args[5];
204 int temp_dir_len;
205
64fcef2d
DB
206 if (for_push)
207 return NULL;
208
cd547b48
JS
209 /* copy the refs to the temporary directory */
210
211 strbuf_addstr(&temp_dir, git_path("rsync-refs-XXXXXX"));
212 if (!mkdtemp(temp_dir.buf))
0721c314 213 die_errno ("Could not make temporary directory");
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JS
214 temp_dir_len = temp_dir.len;
215
7efaeba2 216 strbuf_addstr(&buf, rsync_url(transport->url));
cd547b48
JS
217 strbuf_addstr(&buf, "/refs");
218
219 memset(&rsync, 0, sizeof(rsync));
220 rsync.argv = args;
221 rsync.stdout_to_stderr = 1;
222 args[0] = "rsync";
bd2c86ef 223 args[1] = (transport->verbose > 1) ? "-rv" : "-r";
cd547b48
JS
224 args[2] = buf.buf;
225 args[3] = temp_dir.buf;
226 args[4] = NULL;
227
228 if (run_command(&rsync))
229 die ("Could not run rsync to get refs");
230
231 strbuf_reset(&buf);
7efaeba2 232 strbuf_addstr(&buf, rsync_url(transport->url));
cd547b48
JS
233 strbuf_addstr(&buf, "/packed-refs");
234
235 args[2] = buf.buf;
236
237 if (run_command(&rsync))
238 die ("Could not run rsync to get refs");
239
240 /* read the copied refs */
241
242 strbuf_addstr(&temp_dir, "/refs");
243 read_loose_refs(&temp_dir, temp_dir_len + 1, &tail);
244 strbuf_setlen(&temp_dir, temp_dir_len);
245
246 tail = &dummy;
247 strbuf_addstr(&temp_dir, "/packed-refs");
248 insert_packed_refs(temp_dir.buf, &tail);
249 strbuf_setlen(&temp_dir, temp_dir_len);
250
251 if (remove_dir_recursively(&temp_dir, 0))
252 warning ("Error removing temporary directory %s.",
253 temp_dir.buf);
254
255 strbuf_release(&buf);
256 strbuf_release(&temp_dir);
257
258 return dummy.next;
259}
260
261static int fetch_objs_via_rsync(struct transport *transport,
37148311 262 int nr_objs, struct ref **to_fetch)
cd547b48
JS
263{
264 struct strbuf buf = STRBUF_INIT;
265 struct child_process rsync;
266 const char *args[8];
267 int result;
268
7efaeba2 269 strbuf_addstr(&buf, rsync_url(transport->url));
cd547b48
JS
270 strbuf_addstr(&buf, "/objects/");
271
272 memset(&rsync, 0, sizeof(rsync));
273 rsync.argv = args;
274 rsync.stdout_to_stderr = 1;
275 args[0] = "rsync";
bd2c86ef 276 args[1] = (transport->verbose > 1) ? "-rv" : "-r";
cd547b48
JS
277 args[2] = "--ignore-existing";
278 args[3] = "--exclude";
279 args[4] = "info";
280 args[5] = buf.buf;
281 args[6] = get_object_directory();
282 args[7] = NULL;
283
284 /* NEEDSWORK: handle one level of alternates */
285 result = run_command(&rsync);
286
287 strbuf_release(&buf);
288
289 return result;
290}
291
292static int write_one_ref(const char *name, const unsigned char *sha1,
293 int flags, void *data)
294{
295 struct strbuf *buf = data;
296 int len = buf->len;
297 FILE *f;
298
299 /* when called via for_each_ref(), flags is non-zero */
300 if (flags && prefixcmp(name, "refs/heads/") &&
301 prefixcmp(name, "refs/tags/"))
302 return 0;
303
304 strbuf_addstr(buf, name);
305 if (safe_create_leading_directories(buf->buf) ||
306 !(f = fopen(buf->buf, "w")) ||
307 fprintf(f, "%s\n", sha1_to_hex(sha1)) < 0 ||
308 fclose(f))
309 return error("problems writing temporary file %s", buf->buf);
310 strbuf_setlen(buf, len);
311 return 0;
312}
313
314static int write_refs_to_temp_dir(struct strbuf *temp_dir,
315 int refspec_nr, const char **refspec)
316{
317 int i;
318
319 for (i = 0; i < refspec_nr; i++) {
320 unsigned char sha1[20];
321 char *ref;
322
323 if (dwim_ref(refspec[i], strlen(refspec[i]), sha1, &ref) != 1)
324 return error("Could not get ref %s", refspec[i]);
325
326 if (write_one_ref(ref, sha1, 0, temp_dir)) {
327 free(ref);
328 return -1;
329 }
330 free(ref);
331 }
332 return 0;
333}
334
335static int rsync_transport_push(struct transport *transport,
336 int refspec_nr, const char **refspec, int flags)
337{
338 struct strbuf buf = STRBUF_INIT, temp_dir = STRBUF_INIT;
339 int result = 0, i;
340 struct child_process rsync;
ee020f35 341 const char *args[10];
cd547b48 342
94c89ba6
AW
343 if (flags & TRANSPORT_PUSH_MIRROR)
344 return error("rsync transport does not support mirror mode");
345
cd547b48
JS
346 /* first push the objects */
347
7efaeba2 348 strbuf_addstr(&buf, rsync_url(transport->url));
cd547b48
JS
349 strbuf_addch(&buf, '/');
350
351 memset(&rsync, 0, sizeof(rsync));
352 rsync.argv = args;
353 rsync.stdout_to_stderr = 1;
ee020f35
SP
354 i = 0;
355 args[i++] = "rsync";
356 args[i++] = "-a";
357 if (flags & TRANSPORT_PUSH_DRY_RUN)
358 args[i++] = "--dry-run";
bd2c86ef 359 if (transport->verbose > 1)
ee020f35
SP
360 args[i++] = "-v";
361 args[i++] = "--ignore-existing";
362 args[i++] = "--exclude";
363 args[i++] = "info";
364 args[i++] = get_object_directory();
365 args[i++] = buf.buf;
366 args[i++] = NULL;
cd547b48
JS
367
368 if (run_command(&rsync))
7efaeba2
JS
369 return error("Could not push objects to %s",
370 rsync_url(transport->url));
cd547b48
JS
371
372 /* copy the refs to the temporary directory; they could be packed. */
373
374 strbuf_addstr(&temp_dir, git_path("rsync-refs-XXXXXX"));
375 if (!mkdtemp(temp_dir.buf))
0721c314 376 die_errno ("Could not make temporary directory");
cd547b48
JS
377 strbuf_addch(&temp_dir, '/');
378
379 if (flags & TRANSPORT_PUSH_ALL) {
380 if (for_each_ref(write_one_ref, &temp_dir))
381 return -1;
382 } else if (write_refs_to_temp_dir(&temp_dir, refspec_nr, refspec))
383 return -1;
384
ee020f35
SP
385 i = 2;
386 if (flags & TRANSPORT_PUSH_DRY_RUN)
387 args[i++] = "--dry-run";
388 if (!(flags & TRANSPORT_PUSH_FORCE))
389 args[i++] = "--ignore-existing";
cd547b48 390 args[i++] = temp_dir.buf;
7efaeba2 391 args[i++] = rsync_url(transport->url);
cd547b48
JS
392 args[i++] = NULL;
393 if (run_command(&rsync))
7efaeba2
JS
394 result = error("Could not push to %s",
395 rsync_url(transport->url));
cd547b48
JS
396
397 if (remove_dir_recursively(&temp_dir, 0))
398 warning ("Could not remove temporary directory %s.",
399 temp_dir.buf);
400
401 strbuf_release(&buf);
402 strbuf_release(&temp_dir);
403
404 return result;
405}
c29727d5 406
c7a8a162
JS
407struct bundle_transport_data {
408 int fd;
409 struct bundle_header header;
410};
411
64fcef2d 412static struct ref *get_refs_from_bundle(struct transport *transport, int for_push)
c7a8a162
JS
413{
414 struct bundle_transport_data *data = transport->data;
415 struct ref *result = NULL;
416 int i;
417
64fcef2d
DB
418 if (for_push)
419 return NULL;
420
c7a8a162
JS
421 if (data->fd > 0)
422 close(data->fd);
423 data->fd = read_bundle_header(transport->url, &data->header);
424 if (data->fd < 0)
425 die ("Could not read bundle '%s'.", transport->url);
426 for (i = 0; i < data->header.references.nr; i++) {
427 struct ref_list_entry *e = data->header.references.list + i;
59c69c0c 428 struct ref *ref = alloc_ref(e->name);
c7a8a162 429 hashcpy(ref->old_sha1, e->sha1);
c7a8a162
JS
430 ref->next = result;
431 result = ref;
432 }
433 return result;
434}
435
1788c39c 436static int fetch_refs_from_bundle(struct transport *transport,
37148311 437 int nr_heads, struct ref **to_fetch)
c7a8a162
JS
438{
439 struct bundle_transport_data *data = transport->data;
be042aff
JH
440 return unbundle(&data->header, data->fd,
441 transport->progress ? BUNDLE_VERBOSE : 0);
c7a8a162
JS
442}
443
444static int close_bundle(struct transport *transport)
445{
446 struct bundle_transport_data *data = transport->data;
447 if (data->fd > 0)
448 close(data->fd);
f4e95765 449 free(data);
c7a8a162
JS
450 return 0;
451}
452
9b288516 453struct git_transport_data {
aa5af974 454 struct git_transport_options options;
ba227857
DB
455 struct child_process *conn;
456 int fd[2];
61b075bd 457 unsigned got_remote_heads : 1;
13eb4626 458 struct sha1_array extra_have;
beea4152 459 struct sha1_array shallow;
9b288516
DB
460};
461
aa5af974 462static int set_git_option(struct git_transport_options *opts,
9b288516
DB
463 const char *name, const char *value)
464{
c29727d5 465 if (!strcmp(name, TRANS_OPT_UPLOADPACK)) {
aa5af974 466 opts->uploadpack = value;
c29727d5
DB
467 return 0;
468 } else if (!strcmp(name, TRANS_OPT_RECEIVEPACK)) {
aa5af974 469 opts->receivepack = value;
9b288516
DB
470 return 0;
471 } else if (!strcmp(name, TRANS_OPT_THIN)) {
aa5af974 472 opts->thin = !!value;
9b288516 473 return 0;
41fa7d2e 474 } else if (!strcmp(name, TRANS_OPT_FOLLOWTAGS)) {
aa5af974 475 opts->followtags = !!value;
41fa7d2e 476 return 0;
c29727d5 477 } else if (!strcmp(name, TRANS_OPT_KEEP)) {
aa5af974 478 opts->keep = !!value;
c29727d5 479 return 0;
48d25cae
NTND
480 } else if (!strcmp(name, TRANS_OPT_UPDATE_SHALLOW)) {
481 opts->update_shallow = !!value;
482 return 0;
c29727d5
DB
483 } else if (!strcmp(name, TRANS_OPT_DEPTH)) {
484 if (!value)
aa5af974 485 opts->depth = 0;
e7622ce8
NTND
486 else {
487 char *end;
488 opts->depth = strtol(value, &end, 0);
489 if (*end)
490 die("transport: invalid depth option '%s'", value);
491 }
c29727d5 492 return 0;
9b288516
DB
493 }
494 return 1;
495}
496
64fcef2d 497static int connect_setup(struct transport *transport, int for_push, int verbose)
ba227857
DB
498{
499 struct git_transport_data *data = transport->data;
61b075bd
IL
500
501 if (data->conn)
502 return 0;
503
5a277f3f
JH
504 data->conn = git_connect(data->fd, transport->url,
505 for_push ? data->options.receivepack :
506 data->options.uploadpack,
64fcef2d 507 verbose ? CONNECT_VERBOSE : 0);
61b075bd 508
ba227857
DB
509 return 0;
510}
511
64fcef2d 512static struct ref *get_refs_via_connect(struct transport *transport, int for_push)
c29727d5
DB
513{
514 struct git_transport_data *data = transport->data;
515 struct ref *refs;
c29727d5 516
64fcef2d 517 connect_setup(transport, for_push, 0);
85edf4f5 518 get_remote_heads(data->fd[0], NULL, 0, &refs,
beea4152
NTND
519 for_push ? REF_NORMAL : 0,
520 &data->extra_have,
4820a33b 521 &data->shallow);
61b075bd 522 data->got_remote_heads = 1;
c29727d5
DB
523
524 return refs;
525}
526
1788c39c 527static int fetch_refs_via_pack(struct transport *transport,
37148311 528 int nr_heads, struct ref **to_fetch)
c29727d5
DB
529{
530 struct git_transport_data *data = transport->data;
ba227857 531 const struct ref *refs;
c29727d5
DB
532 char *dest = xstrdup(transport->url);
533 struct fetch_pack_args args;
00183cbb 534 struct ref *refs_tmp = NULL;
c29727d5 535
fa740529 536 memset(&args, 0, sizeof(args));
aa5af974
IL
537 args.uploadpack = data->options.uploadpack;
538 args.keep_pack = data->options.keep;
fa740529 539 args.lock_pack = 1;
aa5af974
IL
540 args.use_thin_pack = data->options.thin;
541 args.include_tag = data->options.followtags;
bd2c86ef 542 args.verbose = (transport->verbose > 1);
fe8aa148 543 args.quiet = (transport->verbose < 0);
d01b3c02 544 args.no_progress = !transport->progress;
aa5af974 545 args.depth = data->options.depth;
c6807a40
NTND
546 args.check_self_contained_and_connected =
547 data->options.check_self_contained_and_connected;
beea4152 548 args.cloning = transport->cloning;
48d25cae 549 args.update_shallow = data->options.update_shallow;
c29727d5 550
61b075bd 551 if (!data->got_remote_heads) {
64fcef2d 552 connect_setup(transport, 0, 0);
b06dcd7d 553 get_remote_heads(data->fd[0], NULL, 0, &refs_tmp, 0,
4820a33b 554 NULL, &data->shallow);
61b075bd 555 data->got_remote_heads = 1;
ba227857
DB
556 }
557
00183cbb
DB
558 refs = fetch_pack(&args, data->fd, data->conn,
559 refs_tmp ? refs_tmp : transport->remote_refs,
beea4152 560 dest, to_fetch, nr_heads, &data->shallow,
f2db854d 561 &transport->pack_lockfile);
ba227857
DB
562 close(data->fd[0]);
563 close(data->fd[1]);
564 if (finish_connect(data->conn))
565 refs = NULL;
566 data->conn = NULL;
61b075bd 567 data->got_remote_heads = 0;
c6807a40
NTND
568 data->options.self_contained_and_connected =
569 args.self_contained_and_connected;
c29727d5 570
00183cbb
DB
571 free_refs(refs_tmp);
572
c29727d5 573 free(dest);
c6bc4005 574 return (refs ? 0 : -1);
c29727d5
DB
575}
576
481c7a6d
JK
577static int push_had_errors(struct ref *ref)
578{
579 for (; ref; ref = ref->next) {
580 switch (ref->status) {
581 case REF_STATUS_NONE:
582 case REF_STATUS_UPTODATE:
583 case REF_STATUS_OK:
584 break;
585 default:
586 return 1;
587 }
588 }
589 return 0;
590}
591
f1863d0d 592int transport_refs_pushed(struct ref *ref)
64fcef2d
DB
593{
594 for (; ref; ref = ref->next) {
595 switch(ref->status) {
596 case REF_STATUS_NONE:
597 case REF_STATUS_UPTODATE:
598 break;
599 default:
600 return 1;
601 }
602 }
603 return 0;
604}
605
f1863d0d 606void transport_update_tracking_ref(struct remote *remote, struct ref *ref, int verbose)
64fcef2d
DB
607{
608 struct refspec rs;
609
610 if (ref->status != REF_STATUS_OK && ref->status != REF_STATUS_UPTODATE)
611 return;
612
613 rs.src = ref->name;
614 rs.dst = NULL;
615
616 if (!remote_find_tracking(remote, &rs)) {
617 if (verbose)
618 fprintf(stderr, "updating local tracking ref '%s'\n", rs.dst);
619 if (ref->deletion) {
620 delete_ref(rs.dst, NULL, 0);
621 } else
622 update_ref("update by push", rs.dst,
623 ref->new_sha1, NULL, 0, 0);
624 free(rs.dst);
625 }
626}
627
1965ff74 628static void print_ref_status(char flag, const char *summary, struct ref *to, struct ref *from, const char *msg, int porcelain)
64fcef2d 629{
1965ff74
LA
630 if (porcelain) {
631 if (from)
632 fprintf(stdout, "%c\t%s:%s\t", flag, from->name, to->name);
633 else
634 fprintf(stdout, "%c\t:%s\t", flag, to->name);
635 if (msg)
636 fprintf(stdout, "%s (%s)\n", summary, msg);
637 else
638 fprintf(stdout, "%s\n", summary);
639 } else {
f1863d0d 640 fprintf(stderr, " %c %-*s ", flag, TRANSPORT_SUMMARY_WIDTH, summary);
1965ff74
LA
641 if (from)
642 fprintf(stderr, "%s -> %s", prettify_refname(from->name), prettify_refname(to->name));
643 else
644 fputs(prettify_refname(to->name), stderr);
645 if (msg) {
646 fputs(" (", stderr);
647 fputs(msg, stderr);
648 fputc(')', stderr);
649 }
650 fputc('\n', stderr);
64fcef2d 651 }
64fcef2d
DB
652}
653
654static const char *status_abbrev(unsigned char sha1[20])
655{
656 return find_unique_abbrev(sha1, DEFAULT_ABBREV);
657}
658
1965ff74 659static void print_ok_ref_status(struct ref *ref, int porcelain)
64fcef2d
DB
660{
661 if (ref->deletion)
1965ff74 662 print_ref_status('-', "[deleted]", ref, NULL, NULL, porcelain);
64fcef2d
DB
663 else if (is_null_sha1(ref->old_sha1))
664 print_ref_status('*',
665 (!prefixcmp(ref->name, "refs/tags/") ? "[new tag]" :
1965ff74
LA
666 "[new branch]"),
667 ref, ref->peer_ref, NULL, porcelain);
64fcef2d
DB
668 else {
669 char quickref[84];
670 char type;
671 const char *msg;
672
673 strcpy(quickref, status_abbrev(ref->old_sha1));
5ece083f 674 if (ref->forced_update) {
64fcef2d
DB
675 strcat(quickref, "...");
676 type = '+';
677 msg = "forced update";
678 } else {
679 strcat(quickref, "..");
680 type = ' ';
681 msg = NULL;
682 }
683 strcat(quickref, status_abbrev(ref->new_sha1));
684
1965ff74 685 print_ref_status(type, quickref, ref, ref->peer_ref, msg, porcelain);
64fcef2d
DB
686 }
687}
688
1965ff74 689static int print_one_push_status(struct ref *ref, const char *dest, int count, int porcelain)
64fcef2d
DB
690{
691 if (!count)
60cfeb8e 692 fprintf(porcelain ? stdout : stderr, "To %s\n", dest);
64fcef2d
DB
693
694 switch(ref->status) {
695 case REF_STATUS_NONE:
1965ff74 696 print_ref_status('X', "[no match]", ref, NULL, NULL, porcelain);
64fcef2d
DB
697 break;
698 case REF_STATUS_REJECT_NODELETE:
699 print_ref_status('!', "[rejected]", ref, NULL,
1965ff74 700 "remote does not support deleting refs", porcelain);
64fcef2d
DB
701 break;
702 case REF_STATUS_UPTODATE:
703 print_ref_status('=', "[up to date]", ref,
1965ff74 704 ref->peer_ref, NULL, porcelain);
64fcef2d
DB
705 break;
706 case REF_STATUS_REJECT_NONFASTFORWARD:
707 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
a75d7b54 708 "non-fast-forward", porcelain);
64fcef2d 709 break;
dbfeddb1
CR
710 case REF_STATUS_REJECT_ALREADY_EXISTS:
711 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
712 "already exists", porcelain);
713 break;
75e5c0dc
JH
714 case REF_STATUS_REJECT_FETCH_FIRST:
715 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
716 "fetch first", porcelain);
717 break;
718 case REF_STATUS_REJECT_NEEDS_FORCE:
719 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
720 "needs force", porcelain);
721 break;
631b5ef2
JH
722 case REF_STATUS_REJECT_STALE:
723 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
724 "stale info", porcelain);
725 break;
4820a33b
NTND
726 case REF_STATUS_REJECT_SHALLOW:
727 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
728 "new shallow roots not allowed", porcelain);
729 break;
64fcef2d
DB
730 case REF_STATUS_REMOTE_REJECT:
731 print_ref_status('!', "[remote rejected]", ref,
1965ff74
LA
732 ref->deletion ? NULL : ref->peer_ref,
733 ref->remote_status, porcelain);
64fcef2d
DB
734 break;
735 case REF_STATUS_EXPECTING_REPORT:
736 print_ref_status('!', "[remote failure]", ref,
1965ff74
LA
737 ref->deletion ? NULL : ref->peer_ref,
738 "remote failed to report status", porcelain);
64fcef2d
DB
739 break;
740 case REF_STATUS_OK:
1965ff74 741 print_ok_ref_status(ref, porcelain);
64fcef2d
DB
742 break;
743 }
744
745 return 1;
746}
747
f1863d0d 748void transport_print_push_status(const char *dest, struct ref *refs,
10643d4e 749 int verbose, int porcelain, unsigned int *reject_reasons)
64fcef2d
DB
750{
751 struct ref *ref;
752 int n = 0;
f25950f3
CT
753 unsigned char head_sha1[20];
754 char *head;
755
756 head = resolve_refdup("HEAD", head_sha1, 1, NULL);
64fcef2d
DB
757
758 if (verbose) {
759 for (ref = refs; ref; ref = ref->next)
760 if (ref->status == REF_STATUS_UPTODATE)
1965ff74 761 n += print_one_push_status(ref, dest, n, porcelain);
64fcef2d
DB
762 }
763
764 for (ref = refs; ref; ref = ref->next)
765 if (ref->status == REF_STATUS_OK)
1965ff74 766 n += print_one_push_status(ref, dest, n, porcelain);
64fcef2d 767
10643d4e 768 *reject_reasons = 0;
64fcef2d
DB
769 for (ref = refs; ref; ref = ref->next) {
770 if (ref->status != REF_STATUS_NONE &&
771 ref->status != REF_STATUS_UPTODATE &&
772 ref->status != REF_STATUS_OK)
1965ff74 773 n += print_one_push_status(ref, dest, n, porcelain);
10643d4e 774 if (ref->status == REF_STATUS_REJECT_NONFASTFORWARD) {
1d2c14df 775 if (head != NULL && !strcmp(head, ref->name))
10643d4e 776 *reject_reasons |= REJECT_NON_FF_HEAD;
f25950f3 777 else
10643d4e 778 *reject_reasons |= REJECT_NON_FF_OTHER;
dbfeddb1
CR
779 } else if (ref->status == REF_STATUS_REJECT_ALREADY_EXISTS) {
780 *reject_reasons |= REJECT_ALREADY_EXISTS;
75e5c0dc
JH
781 } else if (ref->status == REF_STATUS_REJECT_FETCH_FIRST) {
782 *reject_reasons |= REJECT_FETCH_FIRST;
783 } else if (ref->status == REF_STATUS_REJECT_NEEDS_FORCE) {
784 *reject_reasons |= REJECT_NEEDS_FORCE;
f25950f3 785 }
64fcef2d
DB
786 }
787}
788
f1863d0d 789void transport_verify_remote_names(int nr_heads, const char **heads)
64fcef2d
DB
790{
791 int i;
792
793 for (i = 0; i < nr_heads; i++) {
794 const char *local = heads[i];
795 const char *remote = strrchr(heads[i], ':');
796
797 if (*local == '+')
798 local++;
799
800 /* A matching refspec is okay. */
801 if (remote == local && remote[1] == '\0')
802 continue;
803
804 remote = remote ? (remote + 1) : local;
8d9c5010
MH
805 if (check_refname_format(remote,
806 REFNAME_ALLOW_ONELEVEL|REFNAME_REFSPEC_PATTERN))
807 die("remote part of refspec is not a valid name in %s",
808 heads[i]);
64fcef2d
DB
809 }
810}
811
812static int git_transport_push(struct transport *transport, struct ref *remote_refs, int flags)
f3fa1838 813{
9b288516 814 struct git_transport_data *data = transport->data;
40cb4fab 815 struct send_pack_args args;
64fcef2d
DB
816 int ret;
817
61b075bd 818 if (!data->got_remote_heads) {
64fcef2d
DB
819 struct ref *tmp_refs;
820 connect_setup(transport, 1, 0);
821
b06dcd7d 822 get_remote_heads(data->fd[0], NULL, 0, &tmp_refs, REF_NORMAL, NULL, NULL);
61b075bd 823 data->got_remote_heads = 1;
64fcef2d 824 }
4820a33b
NTND
825 if (data->shallow.nr)
826 die("pushing to a shallow repository is not supported");
9b288516 827
de1a2fdd 828 memset(&args, 0, sizeof(args));
94c89ba6 829 args.send_mirror = !!(flags & TRANSPORT_PUSH_MIRROR);
40cb4fab 830 args.force_update = !!(flags & TRANSPORT_PUSH_FORCE);
aa5af974 831 args.use_thin_pack = data->options.thin;
8afd8dc0
TRC
832 args.verbose = (transport->verbose > 0);
833 args.quiet = (transport->verbose < 0);
d7c411b7 834 args.progress = transport->progress;
40cb4fab 835 args.dry_run = !!(flags & TRANSPORT_PUSH_DRY_RUN);
77555854 836 args.porcelain = !!(flags & TRANSPORT_PUSH_PORCELAIN);
40cb4fab 837
64fcef2d
DB
838 ret = send_pack(&args, data->fd, data->conn, remote_refs,
839 &data->extra_have);
840
841 close(data->fd[1]);
842 close(data->fd[0]);
843 ret |= finish_connect(data->conn);
844 data->conn = NULL;
61b075bd 845 data->got_remote_heads = 0;
64fcef2d
DB
846
847 return ret;
9b288516
DB
848}
849
b236752a
IL
850static int connect_git(struct transport *transport, const char *name,
851 const char *executable, int fd[2])
852{
853 struct git_transport_data *data = transport->data;
854 data->conn = git_connect(data->fd, transport->url,
855 executable, 0);
856 fd[0] = data->fd[0];
857 fd[1] = data->fd[1];
858 return 0;
859}
860
f4e95765
SP
861static int disconnect_git(struct transport *transport)
862{
ba227857
DB
863 struct git_transport_data *data = transport->data;
864 if (data->conn) {
61b075bd
IL
865 if (data->got_remote_heads)
866 packet_flush(data->fd[1]);
ba227857
DB
867 close(data->fd[0]);
868 close(data->fd[1]);
869 finish_connect(data->conn);
870 }
871
872 free(data);
f4e95765
SP
873 return 0;
874}
875
61b075bd
IL
876void transport_take_over(struct transport *transport,
877 struct child_process *child)
878{
879 struct git_transport_data *data;
880
881 if (!transport->smart_options)
882 die("Bug detected: Taking over transport requires non-NULL "
883 "smart_options field.");
884
885 data = xcalloc(1, sizeof(*data));
886 data->options = *transport->smart_options;
887 data->conn = child;
888 data->fd[0] = data->conn->out;
889 data->fd[1] = data->conn->in;
890 data->got_remote_heads = 0;
891 transport->data = data;
892
893 transport->set_option = NULL;
894 transport->get_refs_list = get_refs_via_connect;
895 transport->fetch = fetch_refs_via_pack;
896 transport->push = NULL;
897 transport->push_refs = git_transport_push;
898 transport->disconnect = disconnect_git;
899 transport->smart_options = &(data->options);
b26ed430
JH
900
901 transport->cannot_reuse = 1;
61b075bd
IL
902}
903
9b288516
DB
904static int is_local(const char *url)
905{
906 const char *colon = strchr(url, ':');
907 const char *slash = strchr(url, '/');
be501813
JS
908 return !colon || (slash && slash < colon) ||
909 has_dos_drive_prefix(url);
9b288516
DB
910}
911
912static int is_file(const char *url)
913{
914 struct stat buf;
915 if (stat(url, &buf))
916 return 0;
917 return S_ISREG(buf.st_mode);
918}
919
25d5cc48
IL
920static int external_specification_len(const char *url)
921{
922 return strchr(url, ':') - url;
923}
924
e5f4e214 925struct transport *transport_get(struct remote *remote, const char *url)
9b288516 926{
4da50460 927 const char *helper;
8eb554ae
SP
928 struct transport *ret = xcalloc(1, sizeof(*ret));
929
d01b3c02
TRC
930 ret->progress = isatty(2);
931
c1d45cf7
DB
932 if (!remote)
933 die("No remote provided to transport_get()");
934
b0d66e15 935 ret->got_remote_refs = 0;
8eb554ae 936 ret->remote = remote;
4da50460 937 helper = remote->foreign_vcs;
fb0cc87e 938
cb21d8f0 939 if (!url && remote->url)
fb0cc87e 940 url = remote->url[0];
8eb554ae 941 ret->url = url;
8eb554ae 942
87422439
JS
943 /* maybe it is a foreign URL? */
944 if (url) {
945 const char *p = url;
946
638794cd 947 while (is_urlschemechar(p == url, *p))
87422439
JS
948 p++;
949 if (!prefixcmp(p, "::"))
4da50460 950 helper = xstrndup(url, p - url);
87422439
JS
951 }
952
4da50460
IL
953 if (helper) {
954 transport_helper_init(ret, helper);
25d5cc48 955 } else if (!prefixcmp(url, "rsync:")) {
cd547b48
JS
956 ret->get_refs_list = get_refs_via_rsync;
957 ret->fetch = fetch_objs_via_rsync;
958 ret->push = rsync_transport_push;
aa5af974 959 ret->smart_options = NULL;
2727b71f 960 } else if (is_local(url) && is_file(url) && is_bundle(url, 1)) {
c7a8a162 961 struct bundle_transport_data *data = xcalloc(1, sizeof(*data));
c7a8a162 962 ret->data = data;
824d5776
SP
963 ret->get_refs_list = get_refs_from_bundle;
964 ret->fetch = fetch_refs_from_bundle;
965 ret->disconnect = close_bundle;
aa5af974 966 ret->smart_options = NULL;
25d5cc48
IL
967 } else if (!is_url(url)
968 || !prefixcmp(url, "file://")
969 || !prefixcmp(url, "git://")
970 || !prefixcmp(url, "ssh://")
971 || !prefixcmp(url, "git+ssh://")
972 || !prefixcmp(url, "ssh+git://")) {
973 /* These are builtin smart transports. */
9b288516 974 struct git_transport_data *data = xcalloc(1, sizeof(*data));
9b288516 975 ret->data = data;
aa5af974 976 ret->set_option = NULL;
824d5776
SP
977 ret->get_refs_list = get_refs_via_connect;
978 ret->fetch = fetch_refs_via_pack;
64fcef2d 979 ret->push_refs = git_transport_push;
b236752a 980 ret->connect = connect_git;
f4e95765 981 ret->disconnect = disconnect_git;
aa5af974 982 ret->smart_options = &(data->options);
824d5776 983
ba227857 984 data->conn = NULL;
61b075bd 985 data->got_remote_heads = 0;
25d5cc48
IL
986 } else {
987 /* Unknown protocol in URL. Pass to external handler. */
988 int len = external_specification_len(url);
989 char *handler = xmalloc(len + 1);
990 handler[len] = 0;
991 strncpy(handler, url, len);
992 transport_helper_init(ret, handler);
9b288516 993 }
8eb554ae 994
aa5af974
IL
995 if (ret->smart_options) {
996 ret->smart_options->thin = 1;
997 ret->smart_options->uploadpack = "git-upload-pack";
998 if (remote->uploadpack)
999 ret->smart_options->uploadpack = remote->uploadpack;
1000 ret->smart_options->receivepack = "git-receive-pack";
1001 if (remote->receivepack)
1002 ret->smart_options->receivepack = remote->receivepack;
1003 }
1004
9b288516
DB
1005 return ret;
1006}
1007
1008int transport_set_option(struct transport *transport,
1009 const char *name, const char *value)
1010{
aa5af974
IL
1011 int git_reports = 1, protocol_reports = 1;
1012
1013 if (transport->smart_options)
1014 git_reports = set_git_option(transport->smart_options,
1015 name, value);
1016
824d5776 1017 if (transport->set_option)
aa5af974
IL
1018 protocol_reports = transport->set_option(transport, name,
1019 value);
1020
1021 /* If either report is 0, report 0 (success). */
1022 if (!git_reports || !protocol_reports)
1023 return 0;
1024 /* If either reports -1 (invalid value), report -1. */
1025 if ((git_reports == -1) || (protocol_reports == -1))
1026 return -1;
1027 /* Otherwise if both report unknown, report unknown. */
ab865e6e 1028 return 1;
9b288516
DB
1029}
1030
d01b3c02
TRC
1031void transport_set_verbosity(struct transport *transport, int verbosity,
1032 int force_progress)
bde873c5 1033{
bd2c86ef 1034 if (verbosity >= 1)
bde873c5
TRC
1035 transport->verbose = verbosity <= 3 ? verbosity : 3;
1036 if (verbosity < 0)
1037 transport->verbose = -1;
d01b3c02
TRC
1038
1039 /**
1040 * Rules used to determine whether to report progress (processing aborts
1041 * when a rule is satisfied):
1042 *
01fdc21f
CB
1043 * . Report progress, if force_progress is 1 (ie. --progress).
1044 * . Don't report progress, if force_progress is 0 (ie. --no-progress).
1045 * . Don't report progress, if verbosity < 0 (ie. -q/--quiet ).
1046 * . Report progress if isatty(2) is 1.
d01b3c02 1047 **/
01fdc21f
CB
1048 if (force_progress >= 0)
1049 transport->progress = !!force_progress;
1050 else
1051 transport->progress = verbosity >= 0 && isatty(2);
bde873c5
TRC
1052}
1053
a762e51e
HV
1054static void die_with_unpushed_submodules(struct string_list *needs_pushing)
1055{
1056 int i;
1057
1058 fprintf(stderr, "The following submodule paths contain changes that can\n"
1059 "not be found on any remote:\n");
1060 for (i = 0; i < needs_pushing->nr; i++)
1061 printf(" %s\n", needs_pushing->items[i].string);
eb21c732
HV
1062 fprintf(stderr, "\nPlease try\n\n"
1063 " git push --recurse-submodules=on-demand\n\n"
1064 "or cd to the path and use\n\n"
1065 " git push\n\n"
1066 "to push them to a remote.\n\n");
a762e51e
HV
1067
1068 string_list_clear(needs_pushing, 0);
1069
1070 die("Aborting.");
1071}
1072
ec55559f
AS
1073static int run_pre_push_hook(struct transport *transport,
1074 struct ref *remote_refs)
1075{
1076 int ret = 0, x;
1077 struct ref *r;
1078 struct child_process proc;
1079 struct strbuf buf;
1080 const char *argv[4];
1081
1082 if (!(argv[0] = find_hook("pre-push")))
1083 return 0;
1084
1085 argv[1] = transport->remote->name;
1086 argv[2] = transport->url;
1087 argv[3] = NULL;
1088
1089 memset(&proc, 0, sizeof(proc));
1090 proc.argv = argv;
1091 proc.in = -1;
1092
1093 if (start_command(&proc)) {
1094 finish_command(&proc);
1095 return -1;
1096 }
1097
1098 strbuf_init(&buf, 256);
1099
1100 for (r = remote_refs; r; r = r->next) {
1101 if (!r->peer_ref) continue;
1102 if (r->status == REF_STATUS_REJECT_NONFASTFORWARD) continue;
631b5ef2 1103 if (r->status == REF_STATUS_REJECT_STALE) continue;
ec55559f
AS
1104 if (r->status == REF_STATUS_UPTODATE) continue;
1105
1106 strbuf_reset(&buf);
1107 strbuf_addf( &buf, "%s %s %s %s\n",
1108 r->peer_ref->name, sha1_to_hex(r->new_sha1),
1109 r->name, sha1_to_hex(r->old_sha1));
1110
1111 if (write_in_full(proc.in, buf.buf, buf.len) != buf.len) {
1112 ret = -1;
1113 break;
1114 }
1115 }
1116
1117 strbuf_release(&buf);
1118
1119 x = close(proc.in);
1120 if (!ret)
1121 ret = x;
1122
1123 x = finish_command(&proc);
1124 if (!ret)
1125 ret = x;
1126
1127 return ret;
1128}
1129
9b288516 1130int transport_push(struct transport *transport,
07436e43 1131 int refspec_nr, const char **refspec, int flags,
10643d4e 1132 unsigned int *reject_reasons)
9b288516 1133{
10643d4e 1134 *reject_reasons = 0;
f1863d0d 1135 transport_verify_remote_names(refspec_nr, refspec);
64fcef2d 1136
61b075bd 1137 if (transport->push) {
e9fcd1e2
IL
1138 /* Maybe FIXME. But no important transport uses this case. */
1139 if (flags & TRANSPORT_PUSH_SET_UPSTREAM)
1140 die("This transport does not support using --set-upstream");
1141
64fcef2d 1142 return transport->push(transport, refspec_nr, refspec, flags);
61b075bd 1143 } else if (transport->push_refs) {
64fcef2d
DB
1144 struct ref *remote_refs =
1145 transport->get_refs_list(transport, 1);
64fcef2d
DB
1146 struct ref *local_refs = get_local_heads();
1147 int match_flags = MATCH_REFS_NONE;
8afd8dc0
TRC
1148 int verbose = (transport->verbose > 0);
1149 int quiet = (transport->verbose < 0);
1965ff74 1150 int porcelain = flags & TRANSPORT_PUSH_PORCELAIN;
e9fcd1e2 1151 int pretend = flags & TRANSPORT_PUSH_DRY_RUN;
77555854 1152 int push_ret, ret, err;
64fcef2d
DB
1153
1154 if (flags & TRANSPORT_PUSH_ALL)
1155 match_flags |= MATCH_REFS_ALL;
1156 if (flags & TRANSPORT_PUSH_MIRROR)
1157 match_flags |= MATCH_REFS_MIRROR;
6ddba5e2
FC
1158 if (flags & TRANSPORT_PUSH_PRUNE)
1159 match_flags |= MATCH_REFS_PRUNE;
c2aba155
JH
1160 if (flags & TRANSPORT_PUSH_FOLLOW_TAGS)
1161 match_flags |= MATCH_REFS_FOLLOW_TAGS;
64fcef2d 1162
29753cdd
JH
1163 if (match_push_refs(local_refs, &remote_refs,
1164 refspec_nr, refspec, match_flags)) {
64fcef2d
DB
1165 return -1;
1166 }
1167
91048a95
JH
1168 if (transport->smart_options &&
1169 transport->smart_options->cas &&
1170 !is_empty_cas(transport->smart_options->cas))
1171 apply_push_cas(transport->smart_options->cas,
1172 transport->remote, remote_refs);
1173
20e8b465
TRC
1174 set_ref_status_for_push(remote_refs,
1175 flags & TRANSPORT_PUSH_MIRROR,
1176 flags & TRANSPORT_PUSH_FORCE);
1177
ec55559f
AS
1178 if (!(flags & TRANSPORT_PUSH_NO_HOOK))
1179 if (run_pre_push_hook(transport, remote_refs))
1180 return -1;
1181
eb21c732 1182 if ((flags & TRANSPORT_RECURSE_SUBMODULES_ON_DEMAND) && !is_bare_repository()) {
d2b17b32
FG
1183 struct ref *ref = remote_refs;
1184 for (; ref; ref = ref->next)
1185 if (!is_null_sha1(ref->new_sha1) &&
eb21c732
HV
1186 !push_unpushed_submodules(ref->new_sha1,
1187 transport->remote->name))
1188 die ("Failed to push all needed submodules!");
1189 }
1190
1191 if ((flags & (TRANSPORT_RECURSE_SUBMODULES_ON_DEMAND |
1192 TRANSPORT_RECURSE_SUBMODULES_CHECK)) && !is_bare_repository()) {
d2b17b32 1193 struct ref *ref = remote_refs;
a762e51e
HV
1194 struct string_list needs_pushing;
1195
1196 memset(&needs_pushing, 0, sizeof(struct string_list));
1197 needs_pushing.strdup_strings = 1;
d2b17b32
FG
1198 for (; ref; ref = ref->next)
1199 if (!is_null_sha1(ref->new_sha1) &&
a762e51e
HV
1200 find_unpushed_submodules(ref->new_sha1,
1201 transport->remote->name, &needs_pushing))
1202 die_with_unpushed_submodules(&needs_pushing);
d2b17b32
FG
1203 }
1204
77555854 1205 push_ret = transport->push_refs(transport, remote_refs, flags);
42328267 1206 err = push_had_errors(remote_refs);
77555854 1207 ret = push_ret | err;
64fcef2d 1208
42328267 1209 if (!quiet || err)
f1863d0d 1210 transport_print_push_status(transport->url, remote_refs,
6ffd7812 1211 verbose | porcelain, porcelain,
10643d4e 1212 reject_reasons);
64fcef2d 1213
e9fcd1e2
IL
1214 if (flags & TRANSPORT_PUSH_SET_UPSTREAM)
1215 set_upstreams(transport, remote_refs, pretend);
1216
64fcef2d
DB
1217 if (!(flags & TRANSPORT_PUSH_DRY_RUN)) {
1218 struct ref *ref;
1219 for (ref = remote_refs; ref; ref = ref->next)
f1863d0d 1220 transport_update_tracking_ref(transport->remote, ref, verbose);
64fcef2d
DB
1221 }
1222
77555854
LA
1223 if (porcelain && !push_ret)
1224 puts("Done");
66bce02e 1225 else if (!quiet && !ret && !transport_refs_pushed(remote_refs))
64fcef2d 1226 fprintf(stderr, "Everything up-to-date\n");
77555854 1227
64fcef2d
DB
1228 return ret;
1229 }
1230 return 1;
9b288516
DB
1231}
1232
4577370e 1233const struct ref *transport_get_remote_refs(struct transport *transport)
c29727d5 1234{
b0d66e15 1235 if (!transport->got_remote_refs) {
64fcef2d 1236 transport->remote_refs = transport->get_refs_list(transport, 0);
b0d66e15
TRC
1237 transport->got_remote_refs = 1;
1238 }
61b075bd 1239
c29727d5
DB
1240 return transport->remote_refs;
1241}
1242
37148311 1243int transport_fetch_refs(struct transport *transport, struct ref *refs)
c29727d5 1244{
425b1393 1245 int rc;
86386829 1246 int nr_heads = 0, nr_alloc = 0, nr_refs = 0;
37148311
DB
1247 struct ref **heads = NULL;
1248 struct ref *rm;
c29727d5
DB
1249
1250 for (rm = refs; rm; rm = rm->next) {
86386829 1251 nr_refs++;
c29727d5 1252 if (rm->peer_ref &&
37148311 1253 !is_null_sha1(rm->old_sha1) &&
c29727d5
DB
1254 !hashcmp(rm->peer_ref->old_sha1, rm->old_sha1))
1255 continue;
7a2bff45 1256 ALLOC_GROW(heads, nr_heads + 1, nr_alloc);
425b1393 1257 heads[nr_heads++] = rm;
c29727d5
DB
1258 }
1259
86386829
NP
1260 if (!nr_heads) {
1261 /*
1262 * When deepening of a shallow repository is requested,
1263 * then local and remote refs are likely to still be equal.
1264 * Just feed them all to the fetch method in that case.
1265 * This condition shouldn't be met in a non-deepening fetch
09b7e220 1266 * (see builtin/fetch.c:quickfetch()).
86386829
NP
1267 */
1268 heads = xmalloc(nr_refs * sizeof(*heads));
1269 for (rm = refs; rm; rm = rm->next)
1270 heads[nr_heads++] = rm;
1271 }
1272
824d5776 1273 rc = transport->fetch(transport, nr_heads, heads);
61b075bd 1274
c29727d5 1275 free(heads);
425b1393 1276 return rc;
c29727d5
DB
1277}
1278
1788c39c
SP
1279void transport_unlock_pack(struct transport *transport)
1280{
1281 if (transport->pack_lockfile) {
691f1a28 1282 unlink_or_warn(transport->pack_lockfile);
1788c39c
SP
1283 free(transport->pack_lockfile);
1284 transport->pack_lockfile = NULL;
1285 }
1286}
1287
b236752a
IL
1288int transport_connect(struct transport *transport, const char *name,
1289 const char *exec, int fd[2])
1290{
1291 if (transport->connect)
1292 return transport->connect(transport, name, exec, fd);
1293 else
1294 die("Operation not supported by protocol");
1295}
1296
9b288516
DB
1297int transport_disconnect(struct transport *transport)
1298{
1299 int ret = 0;
824d5776
SP
1300 if (transport->disconnect)
1301 ret = transport->disconnect(transport);
9b288516
DB
1302 free(transport);
1303 return ret;
1304}
47abd85b
AE
1305
1306/*
a7793a74 1307 * Strip username (and password) from a URL and return
47abd85b
AE
1308 * it in a newly allocated string.
1309 */
1310char *transport_anonymize_url(const char *url)
1311{
1312 char *anon_url, *scheme_prefix, *anon_part;
1313 size_t anon_len, prefix_len = 0;
1314
1315 anon_part = strchr(url, '@');
1316 if (is_local(url) || !anon_part)
1317 goto literal_copy;
1318
1319 anon_len = strlen(++anon_part);
1320 scheme_prefix = strstr(url, "://");
1321 if (!scheme_prefix) {
1322 if (!strchr(anon_part, ':'))
1323 /* cannot be "me@there:/path/name" */
1324 goto literal_copy;
1325 } else {
1326 const char *cp;
1327 /* make sure scheme is reasonable */
1328 for (cp = url; cp < scheme_prefix; cp++) {
1329 switch (*cp) {
1330 /* RFC 1738 2.1 */
1331 case '+': case '.': case '-':
1332 break; /* ok */
1333 default:
1334 if (isalnum(*cp))
1335 break;
1336 /* it isn't */
1337 goto literal_copy;
1338 }
1339 }
1340 /* @ past the first slash does not count */
1341 cp = strchr(scheme_prefix + 3, '/');
1342 if (cp && cp < anon_part)
1343 goto literal_copy;
1344 prefix_len = scheme_prefix - url + 3;
1345 }
1346 anon_url = xcalloc(1, 1 + prefix_len + anon_len);
1347 memcpy(anon_url, url, prefix_len);
1348 memcpy(anon_url + prefix_len, anon_part, anon_len);
1349 return anon_url;
1350literal_copy:
1351 return xstrdup(url);
1352}
36cfda15 1353
114a6a88
JK
1354struct alternate_refs_data {
1355 alternate_ref_fn *fn;
1356 void *data;
1357};
1358
1359static int refs_from_alternate_cb(struct alternate_object_database *e,
1360 void *data)
36cfda15
JH
1361{
1362 char *other;
1363 size_t len;
1364 struct remote *remote;
1365 struct transport *transport;
1366 const struct ref *extra;
114a6a88 1367 struct alternate_refs_data *cb = data;
36cfda15
JH
1368
1369 e->name[-1] = '\0';
91b3c7ce 1370 other = xstrdup(real_path(e->base));
36cfda15
JH
1371 e->name[-1] = '/';
1372 len = strlen(other);
1373
1374 while (other[len-1] == '/')
1375 other[--len] = '\0';
1376 if (len < 8 || memcmp(other + len - 8, "/objects", 8))
1377 return 0;
1378 /* Is this a git repository with refs? */
1379 memcpy(other + len - 8, "/refs", 6);
1380 if (!is_directory(other))
1381 return 0;
1382 other[len - 8] = '\0';
1383 remote = remote_get(other);
1384 transport = transport_get(remote, other);
1385 for (extra = transport_get_remote_refs(transport);
1386 extra;
1387 extra = extra->next)
114a6a88 1388 cb->fn(extra, cb->data);
36cfda15
JH
1389 transport_disconnect(transport);
1390 free(other);
1391 return 0;
1392}
114a6a88
JK
1393
1394void for_each_alternate_ref(alternate_ref_fn fn, void *data)
1395{
1396 struct alternate_refs_data cb;
1397 cb.fn = fn;
1398 cb.data = data;
1399 foreach_alt_odb(refs_from_alternate_cb, &cb);
1400}