remote.c: introduce a way to have different remotes for fetch/push
[git/git.git] / remote.c
CommitLineData
5751f490
DB
1#include "cache.h"
2#include "remote.h"
3#include "refs.h"
6d21bf96
JH
4#include "commit.h"
5#include "diff.h"
6#include "revision.h"
8ca12c0d 7#include "dir.h"
ec8452d5 8#include "tag.h"
73cf0822 9#include "string-list.h"
ed81c76b 10#include "mergesort.h"
5751f490 11
6ddba5e2
FC
12enum map_direction { FROM_SRC, FROM_DST };
13
e0aaa29f
DB
14static struct refspec s_tag_refspec = {
15 0,
16 1,
b84c343c 17 0,
6e7b66ee 18 0,
08fbdb30
DB
19 "refs/tags/*",
20 "refs/tags/*"
e0aaa29f
DB
21};
22
23const struct refspec *tag_refspec = &s_tag_refspec;
24
844112ca
JH
25struct counted_string {
26 size_t len;
27 const char *s;
28};
55029ae4
DB
29struct rewrite {
30 const char *base;
844112ca
JH
31 size_t baselen;
32 struct counted_string *instead_of;
55029ae4
DB
33 int instead_of_nr;
34 int instead_of_alloc;
35};
d071d942
JT
36struct rewrites {
37 struct rewrite **rewrite;
38 int rewrite_alloc;
39 int rewrite_nr;
40};
55029ae4 41
5751f490 42static struct remote **remotes;
2d31347b
DB
43static int remotes_alloc;
44static int remotes_nr;
5751f490 45
cf818348 46static struct branch **branches;
2d31347b
DB
47static int branches_alloc;
48static int branches_nr;
cf818348
DB
49
50static struct branch *current_branch;
51static const char *default_remote_name;
f24f715e 52static const char *pushremote_name;
fa685bdf 53static int explicit_default_remote_name;
cf818348 54
d071d942 55static struct rewrites rewrites;
1c2eafb8 56static struct rewrites rewrites_push;
55029ae4 57
5751f490
DB
58#define BUF_SIZE (2048)
59static char buffer[BUF_SIZE];
60
0a4da29d
DB
61static int valid_remote(const struct remote *remote)
62{
c578f51d 63 return (!!remote->url) || (!!remote->foreign_vcs);
0a4da29d
DB
64}
65
d071d942 66static const char *alias_url(const char *url, struct rewrites *r)
55029ae4
DB
67{
68 int i, j;
844112ca
JH
69 char *ret;
70 struct counted_string *longest;
71 int longest_i;
72
73 longest = NULL;
74 longest_i = -1;
d071d942
JT
75 for (i = 0; i < r->rewrite_nr; i++) {
76 if (!r->rewrite[i])
55029ae4 77 continue;
d071d942
JT
78 for (j = 0; j < r->rewrite[i]->instead_of_nr; j++) {
79 if (!prefixcmp(url, r->rewrite[i]->instead_of[j].s) &&
844112ca 80 (!longest ||
d071d942
JT
81 longest->len < r->rewrite[i]->instead_of[j].len)) {
82 longest = &(r->rewrite[i]->instead_of[j]);
844112ca 83 longest_i = i;
55029ae4
DB
84 }
85 }
86 }
844112ca
JH
87 if (!longest)
88 return url;
89
d071d942 90 ret = xmalloc(r->rewrite[longest_i]->baselen +
844112ca 91 (strlen(url) - longest->len) + 1);
d071d942
JT
92 strcpy(ret, r->rewrite[longest_i]->base);
93 strcpy(ret + r->rewrite[longest_i]->baselen, url + longest->len);
844112ca 94 return ret;
55029ae4
DB
95}
96
5751f490
DB
97static void add_push_refspec(struct remote *remote, const char *ref)
98{
2d31347b
DB
99 ALLOC_GROW(remote->push_refspec,
100 remote->push_refspec_nr + 1,
101 remote->push_refspec_alloc);
102 remote->push_refspec[remote->push_refspec_nr++] = ref;
5751f490
DB
103}
104
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DB
105static void add_fetch_refspec(struct remote *remote, const char *ref)
106{
2d31347b
DB
107 ALLOC_GROW(remote->fetch_refspec,
108 remote->fetch_refspec_nr + 1,
109 remote->fetch_refspec_alloc);
110 remote->fetch_refspec[remote->fetch_refspec_nr++] = ref;
5d46c9d4
DB
111}
112
28b91f8a 113static void add_url(struct remote *remote, const char *url)
5751f490 114{
2d31347b
DB
115 ALLOC_GROW(remote->url, remote->url_nr + 1, remote->url_alloc);
116 remote->url[remote->url_nr++] = url;
5751f490
DB
117}
118
20346234
MG
119static void add_pushurl(struct remote *remote, const char *pushurl)
120{
121 ALLOC_GROW(remote->pushurl, remote->pushurl_nr + 1, remote->pushurl_alloc);
122 remote->pushurl[remote->pushurl_nr++] = pushurl;
123}
124
1c2eafb8
JT
125static void add_pushurl_alias(struct remote *remote, const char *url)
126{
127 const char *pushurl = alias_url(url, &rewrites_push);
128 if (pushurl != url)
129 add_pushurl(remote, pushurl);
130}
131
132static void add_url_alias(struct remote *remote, const char *url)
133{
134 add_url(remote, alias_url(url, &rewrites));
135 add_pushurl_alias(remote, url);
136}
137
5751f490
DB
138static struct remote *make_remote(const char *name, int len)
139{
2d31347b
DB
140 struct remote *ret;
141 int i;
5751f490 142
2d31347b
DB
143 for (i = 0; i < remotes_nr; i++) {
144 if (len ? (!strncmp(name, remotes[i]->name, len) &&
145 !remotes[i]->name[len]) :
146 !strcmp(name, remotes[i]->name))
147 return remotes[i];
5751f490
DB
148 }
149
2d31347b
DB
150 ret = xcalloc(1, sizeof(struct remote));
151 ALLOC_GROW(remotes, remotes_nr + 1, remotes_alloc);
152 remotes[remotes_nr++] = ret;
5751f490 153 if (len)
2d31347b 154 ret->name = xstrndup(name, len);
5751f490 155 else
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DB
156 ret->name = xstrdup(name);
157 return ret;
5751f490
DB
158}
159
cf818348
DB
160static void add_merge(struct branch *branch, const char *name)
161{
2d31347b
DB
162 ALLOC_GROW(branch->merge_name, branch->merge_nr + 1,
163 branch->merge_alloc);
164 branch->merge_name[branch->merge_nr++] = name;
cf818348
DB
165}
166
167static struct branch *make_branch(const char *name, int len)
168{
2d31347b
DB
169 struct branch *ret;
170 int i;
cf818348
DB
171 char *refname;
172
2d31347b
DB
173 for (i = 0; i < branches_nr; i++) {
174 if (len ? (!strncmp(name, branches[i]->name, len) &&
175 !branches[i]->name[len]) :
176 !strcmp(name, branches[i]->name))
177 return branches[i];
cf818348
DB
178 }
179
2d31347b
DB
180 ALLOC_GROW(branches, branches_nr + 1, branches_alloc);
181 ret = xcalloc(1, sizeof(struct branch));
182 branches[branches_nr++] = ret;
cf818348 183 if (len)
2d31347b 184 ret->name = xstrndup(name, len);
cf818348 185 else
2d31347b 186 ret->name = xstrdup(name);
e8eec71d 187 refname = xmalloc(strlen(name) + strlen("refs/heads/") + 1);
cf818348 188 strcpy(refname, "refs/heads/");
2d31347b
DB
189 strcpy(refname + strlen("refs/heads/"), ret->name);
190 ret->refname = refname;
cf818348 191
2d31347b 192 return ret;
cf818348
DB
193}
194
d071d942 195static struct rewrite *make_rewrite(struct rewrites *r, const char *base, int len)
55029ae4
DB
196{
197 struct rewrite *ret;
198 int i;
199
d071d942 200 for (i = 0; i < r->rewrite_nr; i++) {
844112ca 201 if (len
d071d942
JT
202 ? (len == r->rewrite[i]->baselen &&
203 !strncmp(base, r->rewrite[i]->base, len))
204 : !strcmp(base, r->rewrite[i]->base))
205 return r->rewrite[i];
55029ae4
DB
206 }
207
d071d942 208 ALLOC_GROW(r->rewrite, r->rewrite_nr + 1, r->rewrite_alloc);
55029ae4 209 ret = xcalloc(1, sizeof(struct rewrite));
d071d942 210 r->rewrite[r->rewrite_nr++] = ret;
844112ca 211 if (len) {
55029ae4 212 ret->base = xstrndup(base, len);
844112ca
JH
213 ret->baselen = len;
214 }
215 else {
55029ae4 216 ret->base = xstrdup(base);
844112ca
JH
217 ret->baselen = strlen(base);
218 }
55029ae4
DB
219 return ret;
220}
221
222static void add_instead_of(struct rewrite *rewrite, const char *instead_of)
223{
224 ALLOC_GROW(rewrite->instead_of, rewrite->instead_of_nr + 1, rewrite->instead_of_alloc);
844112ca
JH
225 rewrite->instead_of[rewrite->instead_of_nr].s = instead_of;
226 rewrite->instead_of[rewrite->instead_of_nr].len = strlen(instead_of);
227 rewrite->instead_of_nr++;
55029ae4
DB
228}
229
5751f490
DB
230static void read_remotes_file(struct remote *remote)
231{
232 FILE *f = fopen(git_path("remotes/%s", remote->name), "r");
233
234 if (!f)
235 return;
89cf4c70 236 remote->origin = REMOTE_REMOTES;
5751f490
DB
237 while (fgets(buffer, BUF_SIZE, f)) {
238 int value_list;
239 char *s, *p;
240
241 if (!prefixcmp(buffer, "URL:")) {
242 value_list = 0;
243 s = buffer + 4;
244 } else if (!prefixcmp(buffer, "Push:")) {
245 value_list = 1;
246 s = buffer + 5;
5d46c9d4
DB
247 } else if (!prefixcmp(buffer, "Pull:")) {
248 value_list = 2;
249 s = buffer + 5;
5751f490
DB
250 } else
251 continue;
252
253 while (isspace(*s))
254 s++;
255 if (!*s)
256 continue;
257
258 p = s + strlen(s);
259 while (isspace(p[-1]))
260 *--p = 0;
261
262 switch (value_list) {
263 case 0:
55029ae4 264 add_url_alias(remote, xstrdup(s));
5751f490
DB
265 break;
266 case 1:
267 add_push_refspec(remote, xstrdup(s));
268 break;
5d46c9d4
DB
269 case 2:
270 add_fetch_refspec(remote, xstrdup(s));
271 break;
5751f490
DB
272 }
273 }
274 fclose(f);
275}
276
277static void read_branches_file(struct remote *remote)
278{
279 const char *slash = strchr(remote->name, '/');
cf818348 280 char *frag;
f285a2d7 281 struct strbuf branch = STRBUF_INIT;
5751f490
DB
282 int n = slash ? slash - remote->name : 1000;
283 FILE *f = fopen(git_path("branches/%.*s", n, remote->name), "r");
284 char *s, *p;
285 int len;
286
287 if (!f)
288 return;
289 s = fgets(buffer, BUF_SIZE, f);
290 fclose(f);
291 if (!s)
292 return;
293 while (isspace(*s))
294 s++;
295 if (!*s)
296 return;
89cf4c70 297 remote->origin = REMOTE_BRANCHES;
5751f490
DB
298 p = s + strlen(s);
299 while (isspace(p[-1]))
300 *--p = 0;
301 len = p - s;
302 if (slash)
303 len += strlen(slash);
304 p = xmalloc(len + 1);
305 strcpy(p, s);
306 if (slash)
307 strcat(p, slash);
472fa4cd
DB
308
309 /*
310 * With "slash", e.g. "git fetch jgarzik/netdev-2.6" when
311 * reading from $GIT_DIR/branches/jgarzik fetches "HEAD" from
312 * the partial URL obtained from the branches file plus
313 * "/netdev-2.6" and does not store it in any tracking ref.
314 * #branch specifier in the file is ignored.
315 *
316 * Otherwise, the branches file would have URL and optionally
317 * #branch specified. The "master" (or specified) branch is
318 * fetched and stored in the local branch of the same name.
319 */
cf818348
DB
320 frag = strchr(p, '#');
321 if (frag) {
322 *(frag++) = '\0';
472fa4cd
DB
323 strbuf_addf(&branch, "refs/heads/%s", frag);
324 } else
325 strbuf_addstr(&branch, "refs/heads/master");
326 if (!slash) {
327 strbuf_addf(&branch, ":refs/heads/%s", remote->name);
cf818348 328 } else {
472fa4cd
DB
329 strbuf_reset(&branch);
330 strbuf_addstr(&branch, "HEAD:");
cf818348 331 }
55029ae4 332 add_url_alias(remote, p);
2af202be 333 add_fetch_refspec(remote, strbuf_detach(&branch, NULL));
18afe101
MK
334 /*
335 * Cogito compatible push: push current HEAD to remote #branch
336 * (master if missing)
337 */
338 strbuf_init(&branch, 0);
339 strbuf_addstr(&branch, "HEAD");
340 if (frag)
341 strbuf_addf(&branch, ":refs/heads/%s", frag);
342 else
343 strbuf_addstr(&branch, ":refs/heads/master");
2af202be 344 add_push_refspec(remote, strbuf_detach(&branch, NULL));
d71ab174 345 remote->fetch_tags = 1; /* always auto-follow */
5751f490
DB
346}
347
ef90d6d4 348static int handle_config(const char *key, const char *value, void *cb)
5751f490
DB
349{
350 const char *name;
351 const char *subkey;
352 struct remote *remote;
cf818348
DB
353 struct branch *branch;
354 if (!prefixcmp(key, "branch.")) {
355 name = key + 7;
356 subkey = strrchr(name, '.');
cf818348
DB
357 if (!subkey)
358 return 0;
896c0535 359 branch = make_branch(name, subkey - name);
cf818348 360 if (!strcmp(subkey, ".remote")) {
b4b63435
RR
361 if (git_config_string(&branch->remote_name, key, value))
362 return -1;
fa685bdf 363 if (branch == current_branch) {
cf818348 364 default_remote_name = branch->remote_name;
fa685bdf
DB
365 explicit_default_remote_name = 1;
366 }
d2370cc2
JH
367 } else if (!strcmp(subkey, ".merge")) {
368 if (!value)
369 return config_error_nonbool(key);
cf818348 370 add_merge(branch, xstrdup(value));
d2370cc2 371 }
cf818348 372 return 0;
5751f490 373 }
55029ae4
DB
374 if (!prefixcmp(key, "url.")) {
375 struct rewrite *rewrite;
60e3aba9 376 name = key + 4;
55029ae4
DB
377 subkey = strrchr(name, '.');
378 if (!subkey)
379 return 0;
55029ae4 380 if (!strcmp(subkey, ".insteadof")) {
1c2eafb8
JT
381 rewrite = make_rewrite(&rewrites, name, subkey - name);
382 if (!value)
383 return config_error_nonbool(key);
384 add_instead_of(rewrite, xstrdup(value));
385 } else if (!strcmp(subkey, ".pushinsteadof")) {
386 rewrite = make_rewrite(&rewrites_push, name, subkey - name);
55029ae4
DB
387 if (!value)
388 return config_error_nonbool(key);
389 add_instead_of(rewrite, xstrdup(value));
390 }
391 }
5751f490
DB
392 if (prefixcmp(key, "remote."))
393 return 0;
394 name = key + 7;
c82efafc
BC
395 if (*name == '/') {
396 warning("Config remote shorthand cannot begin with '/': %s",
397 name);
398 return 0;
399 }
5751f490
DB
400 subkey = strrchr(name, '.');
401 if (!subkey)
cd294bc3 402 return 0;
5751f490 403 remote = make_remote(name, subkey - name);
89cf4c70 404 remote->origin = REMOTE_CONFIG;
84bb2dfd
PB
405 if (!strcmp(subkey, ".mirror"))
406 remote->mirror = git_config_bool(key, value);
407 else if (!strcmp(subkey, ".skipdefaultupdate"))
408 remote->skip_default_update = git_config_bool(key, value);
7cc91a2f
BG
409 else if (!strcmp(subkey, ".skipfetchall"))
410 remote->skip_default_update = git_config_bool(key, value);
84bb2dfd
PB
411 else if (!strcmp(subkey, ".url")) {
412 const char *v;
413 if (git_config_string(&v, key, value))
414 return -1;
415 add_url(remote, v);
20346234
MG
416 } else if (!strcmp(subkey, ".pushurl")) {
417 const char *v;
418 if (git_config_string(&v, key, value))
419 return -1;
420 add_pushurl(remote, v);
5751f490 421 } else if (!strcmp(subkey, ".push")) {
84bb2dfd
PB
422 const char *v;
423 if (git_config_string(&v, key, value))
424 return -1;
425 add_push_refspec(remote, v);
5d46c9d4 426 } else if (!strcmp(subkey, ".fetch")) {
84bb2dfd
PB
427 const char *v;
428 if (git_config_string(&v, key, value))
429 return -1;
430 add_fetch_refspec(remote, v);
5751f490 431 } else if (!strcmp(subkey, ".receivepack")) {
84bb2dfd
PB
432 const char *v;
433 if (git_config_string(&v, key, value))
434 return -1;
5751f490 435 if (!remote->receivepack)
84bb2dfd 436 remote->receivepack = v;
5751f490
DB
437 else
438 error("more than one receivepack given, using the first");
0012ba21 439 } else if (!strcmp(subkey, ".uploadpack")) {
84bb2dfd
PB
440 const char *v;
441 if (git_config_string(&v, key, value))
442 return -1;
0012ba21 443 if (!remote->uploadpack)
84bb2dfd 444 remote->uploadpack = v;
0012ba21
DB
445 else
446 error("more than one uploadpack given, using the first");
d71ab174
DB
447 } else if (!strcmp(subkey, ".tagopt")) {
448 if (!strcmp(value, "--no-tags"))
449 remote->fetch_tags = -1;
944163a4
ST
450 else if (!strcmp(value, "--tags"))
451 remote->fetch_tags = 2;
14c98218 452 } else if (!strcmp(subkey, ".proxy")) {
84bb2dfd
PB
453 return git_config_string((const char **)&remote->http_proxy,
454 key, value);
c578f51d
DB
455 } else if (!strcmp(subkey, ".vcs")) {
456 return git_config_string(&remote->foreign_vcs, key, value);
84bb2dfd 457 }
5751f490
DB
458 return 0;
459}
460
55029ae4
DB
461static void alias_all_urls(void)
462{
463 int i, j;
464 for (i = 0; i < remotes_nr; i++) {
1c2eafb8 465 int add_pushurl_aliases;
55029ae4
DB
466 if (!remotes[i])
467 continue;
20346234 468 for (j = 0; j < remotes[i]->pushurl_nr; j++) {
d071d942 469 remotes[i]->pushurl[j] = alias_url(remotes[i]->pushurl[j], &rewrites);
20346234 470 }
1c2eafb8
JT
471 add_pushurl_aliases = remotes[i]->pushurl_nr == 0;
472 for (j = 0; j < remotes[i]->url_nr; j++) {
473 if (add_pushurl_aliases)
474 add_pushurl_alias(remotes[i], remotes[i]->url[j]);
475 remotes[i]->url[j] = alias_url(remotes[i]->url[j], &rewrites);
476 }
55029ae4
DB
477 }
478}
479
5751f490
DB
480static void read_config(void)
481{
482 unsigned char sha1[20];
483 const char *head_ref;
484 int flag;
2543d9b6 485 if (default_remote_name) /* did this already */
5751f490
DB
486 return;
487 default_remote_name = xstrdup("origin");
488 current_branch = NULL;
8cad4744 489 head_ref = resolve_ref_unsafe("HEAD", sha1, 0, &flag);
5751f490
DB
490 if (head_ref && (flag & REF_ISSYMREF) &&
491 !prefixcmp(head_ref, "refs/heads/")) {
cf818348
DB
492 current_branch =
493 make_branch(head_ref + strlen("refs/heads/"), 0);
5751f490 494 }
ef90d6d4 495 git_config(handle_config, NULL);
55029ae4 496 alias_all_urls();
5751f490
DB
497}
498
2cb1f36d
BC
499/*
500 * This function frees a refspec array.
501 * Warning: code paths should be checked to ensure that the src
502 * and dst pointers are always freeable pointers as well
503 * as the refspec pointer itself.
504 */
697d7f5d 505static void free_refspecs(struct refspec *refspec, int nr_refspec)
2cb1f36d
BC
506{
507 int i;
508
509 if (!refspec)
510 return;
511
512 for (i = 0; i < nr_refspec; i++) {
513 free(refspec[i].src);
514 free(refspec[i].dst);
515 }
516 free(refspec);
517}
518
24b6177e 519static struct refspec *parse_refspec_internal(int nr_refspec, const char **refspec, int fetch, int verify)
6b62816c
DB
520{
521 int i;
522 struct refspec *rs = xcalloc(sizeof(*rs), nr_refspec);
46220ca1 523
6b62816c 524 for (i = 0; i < nr_refspec; i++) {
47c6ef1c 525 size_t llen;
46220ca1
JH
526 int is_glob;
527 const char *lhs, *rhs;
8d9c5010 528 int flags;
46220ca1 529
8e76bf3f 530 is_glob = 0;
46220ca1
JH
531
532 lhs = refspec[i];
533 if (*lhs == '+') {
6b62816c 534 rs[i].force = 1;
46220ca1 535 lhs++;
6b62816c 536 }
46220ca1
JH
537
538 rhs = strrchr(lhs, ':');
a83619d6
PB
539
540 /*
541 * Before going on, special case ":" (or "+:") as a refspec
def24991 542 * for pushing matching refs.
a83619d6
PB
543 */
544 if (!fetch && rhs == lhs && rhs[1] == '\0') {
545 rs[i].matching = 1;
546 continue;
547 }
548
46220ca1 549 if (rhs) {
47c6ef1c 550 size_t rlen = strlen(++rhs);
abd2bde7 551 is_glob = (1 <= rlen && strchr(rhs, '*'));
08fbdb30 552 rs[i].dst = xstrndup(rhs, rlen);
6b62816c 553 }
ef00d150 554
46220ca1 555 llen = (rhs ? (rhs - lhs - 1) : strlen(lhs));
abd2bde7 556 if (1 <= llen && memchr(lhs, '*', llen)) {
7d19da46
JH
557 if ((rhs && !is_glob) || (!rhs && fetch))
558 goto invalid;
559 is_glob = 1;
7d19da46
JH
560 } else if (rhs && is_glob) {
561 goto invalid;
ef00d150 562 }
7d19da46 563
46220ca1
JH
564 rs[i].pattern = is_glob;
565 rs[i].src = xstrndup(lhs, llen);
8d9c5010 566 flags = REFNAME_ALLOW_ONELEVEL | (is_glob ? REFNAME_REFSPEC_PATTERN : 0);
46220ca1
JH
567
568 if (fetch) {
6e7b66ee
JH
569 unsigned char unused[40];
570
def24991 571 /* LHS */
46220ca1 572 if (!*rs[i].src)
def24991 573 ; /* empty is ok; it means "HEAD" */
6e7b66ee
JH
574 else if (llen == 40 && !get_sha1_hex(rs[i].src, unused))
575 rs[i].exact_sha1 = 1; /* ok */
def24991
JH
576 else if (!check_refname_format(rs[i].src, flags))
577 ; /* valid looking ref is ok */
578 else
8d9c5010 579 goto invalid;
def24991 580 /* RHS */
8d9c5010 581 if (!rs[i].dst)
def24991 582 ; /* missing is ok; it is the same as empty */
8d9c5010 583 else if (!*rs[i].dst)
def24991
JH
584 ; /* empty is ok; it means "do not store" */
585 else if (!check_refname_format(rs[i].dst, flags))
586 ; /* valid looking ref is ok */
587 else
8d9c5010 588 goto invalid;
46220ca1
JH
589 } else {
590 /*
591 * LHS
592 * - empty is allowed; it means delete.
593 * - when wildcarded, it must be a valid looking ref.
594 * - otherwise, it must be an extended SHA-1, but
595 * there is no existing way to validate this.
596 */
597 if (!*rs[i].src)
598 ; /* empty is ok */
599 else if (is_glob) {
8d9c5010 600 if (check_refname_format(rs[i].src, flags))
46220ca1
JH
601 goto invalid;
602 }
603 else
604 ; /* anything goes, for now */
605 /*
606 * RHS
607 * - missing is allowed, but LHS then must be a
608 * valid looking ref.
609 * - empty is not allowed.
610 * - otherwise it must be a valid looking ref.
611 */
612 if (!rs[i].dst) {
8d9c5010 613 if (check_refname_format(rs[i].src, flags))
46220ca1
JH
614 goto invalid;
615 } else if (!*rs[i].dst) {
616 goto invalid;
617 } else {
8d9c5010 618 if (check_refname_format(rs[i].dst, flags))
46220ca1
JH
619 goto invalid;
620 }
ef00d150 621 }
6b62816c
DB
622 }
623 return rs;
46220ca1
JH
624
625 invalid:
24b6177e 626 if (verify) {
2cb1f36d
BC
627 /*
628 * nr_refspec must be greater than zero and i must be valid
629 * since it is only possible to reach this point from within
630 * the for loop above.
631 */
632 free_refspecs(rs, i+1);
24b6177e
JF
633 return NULL;
634 }
46220ca1
JH
635 die("Invalid refspec '%s'", refspec[i]);
636}
637
24b6177e
JF
638int valid_fetch_refspec(const char *fetch_refspec_str)
639{
24b6177e
JF
640 struct refspec *refspec;
641
66dbfd55 642 refspec = parse_refspec_internal(1, &fetch_refspec_str, 1, 1);
2cb1f36d 643 free_refspecs(refspec, 1);
24b6177e
JF
644 return !!refspec;
645}
646
46220ca1
JH
647struct refspec *parse_fetch_refspec(int nr_refspec, const char **refspec)
648{
24b6177e 649 return parse_refspec_internal(nr_refspec, refspec, 1, 0);
46220ca1
JH
650}
651
697d7f5d 652static struct refspec *parse_push_refspec(int nr_refspec, const char **refspec)
46220ca1 653{
24b6177e 654 return parse_refspec_internal(nr_refspec, refspec, 0, 0);
6b62816c
DB
655}
656
72ff8943
DB
657void free_refspec(int nr_refspec, struct refspec *refspec)
658{
659 int i;
660 for (i = 0; i < nr_refspec; i++) {
661 free(refspec[i].src);
662 free(refspec[i].dst);
663 }
664 free(refspec);
665}
666
df93e33c
DB
667static int valid_remote_nick(const char *name)
668{
8ca12c0d 669 if (!name[0] || is_dot_or_dotdot(name))
df93e33c
DB
670 return 0;
671 return !strchr(name, '/'); /* no slash */
672}
673
f24f715e 674static struct remote *remote_get_1(const char *name, const char *pushremote_name)
5751f490
DB
675{
676 struct remote *ret;
fa685bdf 677 int name_given = 0;
5751f490 678
fa685bdf
DB
679 if (name)
680 name_given = 1;
681 else {
f24f715e
RR
682 if (pushremote_name) {
683 name = pushremote_name;
684 name_given = 1;
685 } else {
686 name = default_remote_name;
687 name_given = explicit_default_remote_name;
688 }
fa685bdf 689 }
9326d494 690
5751f490 691 ret = make_remote(name, 0);
df93e33c 692 if (valid_remote_nick(name)) {
0a4da29d 693 if (!valid_remote(ret))
5751f490 694 read_remotes_file(ret);
0a4da29d 695 if (!valid_remote(ret))
5751f490
DB
696 read_branches_file(ret);
697 }
0a4da29d 698 if (name_given && !valid_remote(ret))
55029ae4 699 add_url_alias(ret, name);
0a4da29d 700 if (!valid_remote(ret))
5751f490 701 return NULL;
46220ca1
JH
702 ret->fetch = parse_fetch_refspec(ret->fetch_refspec_nr, ret->fetch_refspec);
703 ret->push = parse_push_refspec(ret->push_refspec_nr, ret->push_refspec);
5751f490
DB
704 return ret;
705}
6b62816c 706
f24f715e
RR
707struct remote *remote_get(const char *name)
708{
709 read_config();
710 return remote_get_1(name, NULL);
711}
712
713struct remote *pushremote_get(const char *name)
714{
715 read_config();
716 return remote_get_1(name, pushremote_name);
717}
718
9a23ba33
FAG
719int remote_is_configured(const char *name)
720{
721 int i;
722 read_config();
723
724 for (i = 0; i < remotes_nr; i++)
725 if (!strcmp(name, remotes[i]->name))
726 return 1;
727 return 0;
728}
729
b42f6927
JS
730int for_each_remote(each_remote_fn fn, void *priv)
731{
732 int i, result = 0;
733 read_config();
2d31347b 734 for (i = 0; i < remotes_nr && !result; i++) {
b42f6927
JS
735 struct remote *r = remotes[i];
736 if (!r)
737 continue;
738 if (!r->fetch)
46220ca1
JH
739 r->fetch = parse_fetch_refspec(r->fetch_refspec_nr,
740 r->fetch_refspec);
b42f6927 741 if (!r->push)
46220ca1
JH
742 r->push = parse_push_refspec(r->push_refspec_nr,
743 r->push_refspec);
b42f6927
JS
744 result = fn(r, priv);
745 }
746 return result;
747}
748
2467a4fa
DB
749void ref_remove_duplicates(struct ref *ref_map)
750{
183113a5 751 struct string_list refs = STRING_LIST_INIT_NODUP;
73cf0822
JP
752 struct string_list_item *item = NULL;
753 struct ref *prev = NULL, *next = NULL;
754 for (; ref_map; prev = ref_map, ref_map = next) {
755 next = ref_map->next;
2467a4fa
DB
756 if (!ref_map->peer_ref)
757 continue;
73cf0822 758
e8c8b713 759 item = string_list_lookup(&refs, ref_map->peer_ref->name);
73cf0822
JP
760 if (item) {
761 if (strcmp(((struct ref *)item->util)->name,
762 ref_map->name))
763 die("%s tracks both %s and %s",
764 ref_map->peer_ref->name,
765 ((struct ref *)item->util)->name,
766 ref_map->name);
767 prev->next = ref_map->next;
768 free(ref_map->peer_ref);
769 free(ref_map);
95c96d48
JP
770 ref_map = prev; /* skip this; we freed it */
771 continue;
2467a4fa 772 }
73cf0822 773
78a395d3 774 item = string_list_insert(&refs, ref_map->peer_ref->name);
73cf0822 775 item->util = ref_map;
2467a4fa 776 }
73cf0822 777 string_list_clear(&refs, 0);
2467a4fa
DB
778}
779
28b91f8a 780int remote_has_url(struct remote *remote, const char *url)
5d46c9d4
DB
781{
782 int i;
28b91f8a
SP
783 for (i = 0; i < remote->url_nr; i++) {
784 if (!strcmp(remote->url[i], url))
5d46c9d4
DB
785 return 1;
786 }
787 return 0;
788}
789
e928213f
DB
790static int match_name_with_pattern(const char *key, const char *name,
791 const char *value, char **result)
a3c84239 792{
08fbdb30
DB
793 const char *kstar = strchr(key, '*');
794 size_t klen;
abd2bde7
DB
795 size_t ksuffixlen;
796 size_t namelen;
08fbdb30
DB
797 int ret;
798 if (!kstar)
799 die("Key '%s' of pattern had no '*'", key);
800 klen = kstar - key;
abd2bde7
DB
801 ksuffixlen = strlen(kstar + 1);
802 namelen = strlen(name);
803 ret = !strncmp(name, key, klen) && namelen >= klen + ksuffixlen &&
804 !memcmp(name + namelen - ksuffixlen, kstar + 1, ksuffixlen);
e928213f 805 if (ret && value) {
08fbdb30
DB
806 const char *vstar = strchr(value, '*');
807 size_t vlen;
abd2bde7 808 size_t vsuffixlen;
08fbdb30
DB
809 if (!vstar)
810 die("Value '%s' of pattern has no '*'", value);
811 vlen = vstar - value;
abd2bde7
DB
812 vsuffixlen = strlen(vstar + 1);
813 *result = xmalloc(vlen + vsuffixlen +
e928213f 814 strlen(name) -
abd2bde7
DB
815 klen - ksuffixlen + 1);
816 strncpy(*result, value, vlen);
817 strncpy(*result + vlen,
818 name + klen, namelen - klen - ksuffixlen);
819 strcpy(*result + vlen + namelen - klen - ksuffixlen,
820 vstar + 1);
e928213f 821 }
a3c84239
DB
822 return ret;
823}
824
c500352e 825static int query_refspecs(struct refspec *refs, int ref_count, struct refspec *query)
72ff8943
DB
826{
827 int i;
c500352e 828 int find_src = !query->src;
72ff8943 829
c500352e
CMN
830 if (find_src && !query->dst)
831 return error("query_refspecs: need either src or dst");
b42f6927 832
c500352e
CMN
833 for (i = 0; i < ref_count; i++) {
834 struct refspec *refspec = &refs[i];
835 const char *key = find_src ? refspec->dst : refspec->src;
836 const char *value = find_src ? refspec->src : refspec->dst;
837 const char *needle = find_src ? query->dst : query->src;
838 char **result = find_src ? &query->src : &query->dst;
b42f6927 839
c500352e 840 if (!refspec->dst)
5d46c9d4 841 continue;
c500352e 842 if (refspec->pattern) {
e928213f 843 if (match_name_with_pattern(key, needle, value, result)) {
c500352e 844 query->force = refspec->force;
5d46c9d4
DB
845 return 0;
846 }
b42f6927
JS
847 } else if (!strcmp(needle, key)) {
848 *result = xstrdup(value);
c500352e 849 query->force = refspec->force;
b42f6927 850 return 0;
5d46c9d4
DB
851 }
852 }
5d46c9d4
DB
853 return -1;
854}
855
c500352e
CMN
856char *apply_refspecs(struct refspec *refspecs, int nr_refspec,
857 const char *name)
858{
859 struct refspec query;
860
861 memset(&query, 0, sizeof(struct refspec));
862 query.src = (char *)name;
863
864 if (query_refspecs(refspecs, nr_refspec, &query))
865 return NULL;
866
867 return query.dst;
868}
869
870int remote_find_tracking(struct remote *remote, struct refspec *refspec)
871{
872 return query_refspecs(remote->fetch, remote->fetch_refspec_nr, refspec);
873}
874
8009768e
RS
875static struct ref *alloc_ref_with_prefix(const char *prefix, size_t prefixlen,
876 const char *name)
877{
878 size_t len = strlen(name);
879 struct ref *ref = xcalloc(1, sizeof(struct ref) + prefixlen + len + 1);
880 memcpy(ref->name, prefix, prefixlen);
881 memcpy(ref->name + prefixlen, name, len);
882 return ref;
883}
884
59c69c0c 885struct ref *alloc_ref(const char *name)
dfd255dd 886{
59c69c0c 887 return alloc_ref_with_prefix("", 0, name);
737922aa
KK
888}
889
59a57757 890struct ref *copy_ref(const struct ref *ref)
d71ab174 891{
7b3db095
JS
892 struct ref *cpy;
893 size_t len;
894 if (!ref)
895 return NULL;
896 len = strlen(ref->name);
897 cpy = xmalloc(sizeof(struct ref) + len + 1);
898 memcpy(cpy, ref, sizeof(struct ref) + len + 1);
899 cpy->next = NULL;
900 cpy->symref = ref->symref ? xstrdup(ref->symref) : NULL;
901 cpy->remote_status = ref->remote_status ? xstrdup(ref->remote_status) : NULL;
902 cpy->peer_ref = copy_ref(ref->peer_ref);
903 return cpy;
d71ab174
DB
904}
905
4577370e
DB
906struct ref *copy_ref_list(const struct ref *ref)
907{
908 struct ref *ret = NULL;
909 struct ref **tail = &ret;
910 while (ref) {
911 *tail = copy_ref(ref);
912 ref = ref->next;
913 tail = &((*tail)->next);
914 }
915 return ret;
916}
917
697d7f5d 918static void free_ref(struct ref *ref)
be885d96
DB
919{
920 if (!ref)
921 return;
7b3db095 922 free_ref(ref->peer_ref);
be885d96
DB
923 free(ref->remote_status);
924 free(ref->symref);
925 free(ref);
926}
927
dfd255dd
DB
928void free_refs(struct ref *ref)
929{
930 struct ref *next;
931 while (ref) {
932 next = ref->next;
be885d96 933 free_ref(ref);
dfd255dd
DB
934 ref = next;
935 }
936}
937
ed81c76b
JK
938int ref_compare_name(const void *va, const void *vb)
939{
940 const struct ref *a = va, *b = vb;
941 return strcmp(a->name, b->name);
942}
943
944static void *ref_list_get_next(const void *a)
945{
946 return ((const struct ref *)a)->next;
947}
948
949static void ref_list_set_next(void *a, void *next)
950{
951 ((struct ref *)a)->next = next;
952}
953
954void sort_ref_list(struct ref **l, int (*cmp)(const void *, const void *))
955{
956 *l = llist_mergesort(*l, ref_list_get_next, ref_list_set_next, cmp);
957}
958
6b62816c
DB
959static int count_refspec_match(const char *pattern,
960 struct ref *refs,
961 struct ref **matched_ref)
962{
963 int patlen = strlen(pattern);
964 struct ref *matched_weak = NULL;
965 struct ref *matched = NULL;
966 int weak_match = 0;
967 int match = 0;
968
969 for (weak_match = match = 0; refs; refs = refs->next) {
970 char *name = refs->name;
971 int namelen = strlen(name);
6b62816c 972
ae36bdcf 973 if (!refname_match(pattern, name, ref_rev_parse_rules))
6b62816c
DB
974 continue;
975
976 /* A match is "weak" if it is with refs outside
977 * heads or tags, and did not specify the pattern
978 * in full (e.g. "refs/remotes/origin/master") or at
979 * least from the toplevel (e.g. "remotes/origin/master");
980 * otherwise "git push $URL master" would result in
981 * ambiguity between remotes/origin/master and heads/master
982 * at the remote site.
983 */
984 if (namelen != patlen &&
985 patlen != namelen - 5 &&
986 prefixcmp(name, "refs/heads/") &&
987 prefixcmp(name, "refs/tags/")) {
988 /* We want to catch the case where only weak
989 * matches are found and there are multiple
990 * matches, and where more than one strong
991 * matches are found, as ambiguous. One
992 * strong match with zero or more weak matches
993 * are acceptable as a unique match.
994 */
995 matched_weak = refs;
996 weak_match++;
997 }
998 else {
999 matched = refs;
1000 match++;
1001 }
1002 }
1003 if (!matched) {
1004 *matched_ref = matched_weak;
1005 return weak_match;
1006 }
1007 else {
1008 *matched_ref = matched;
1009 return match;
1010 }
1011}
1012
1d735267 1013static void tail_link_ref(struct ref *ref, struct ref ***tail)
6b62816c
DB
1014{
1015 **tail = ref;
1d735267
DB
1016 while (ref->next)
1017 ref = ref->next;
6b62816c 1018 *tail = &ref->next;
6b62816c
DB
1019}
1020
67655246
FC
1021static struct ref *alloc_delete_ref(void)
1022{
1023 struct ref *ref = alloc_ref("(delete)");
1024 hashclr(ref->new_sha1);
1025 return ref;
1026}
1027
6b62816c
DB
1028static struct ref *try_explicit_object_name(const char *name)
1029{
1030 unsigned char sha1[20];
1031 struct ref *ref;
6b62816c 1032
67655246
FC
1033 if (!*name)
1034 return alloc_delete_ref();
6b62816c
DB
1035 if (get_sha1(name, sha1))
1036 return NULL;
59c69c0c 1037 ref = alloc_ref(name);
6b62816c
DB
1038 hashcpy(ref->new_sha1, sha1);
1039 return ref;
1040}
1041
1d735267 1042static struct ref *make_linked_ref(const char *name, struct ref ***tail)
6b62816c 1043{
59c69c0c 1044 struct ref *ret = alloc_ref(name);
1d735267
DB
1045 tail_link_ref(ret, tail);
1046 return ret;
163f0ee5 1047}
8558fd9e 1048
f8aae120
JK
1049static char *guess_ref(const char *name, struct ref *peer)
1050{
1051 struct strbuf buf = STRBUF_INIT;
1052 unsigned char sha1[20];
1053
8cad4744 1054 const char *r = resolve_ref_unsafe(peer->name, sha1, 1, NULL);
f8aae120
JK
1055 if (!r)
1056 return NULL;
1057
1058 if (!prefixcmp(r, "refs/heads/"))
1059 strbuf_addstr(&buf, "refs/heads/");
1060 else if (!prefixcmp(r, "refs/tags/"))
1061 strbuf_addstr(&buf, "refs/tags/");
1062 else
1063 return NULL;
1064
1065 strbuf_addstr(&buf, name);
1066 return strbuf_detach(&buf, NULL);
1067}
1068
54a8ad92
JH
1069static int match_explicit(struct ref *src, struct ref *dst,
1070 struct ref ***dst_tail,
9a7bbd1d 1071 struct refspec *rs)
6b62816c 1072{
54a8ad92 1073 struct ref *matched_src, *matched_dst;
cdf690e5 1074 int copy_src;
8558fd9e 1075
54a8ad92 1076 const char *dst_value = rs->dst;
f8aae120 1077 char *dst_guess;
6b62816c 1078
a83619d6 1079 if (rs->pattern || rs->matching)
9a7bbd1d 1080 return 0;
8558fd9e 1081
54a8ad92
JH
1082 matched_src = matched_dst = NULL;
1083 switch (count_refspec_match(rs->src, src, &matched_src)) {
1084 case 1:
cdf690e5 1085 copy_src = 1;
54a8ad92
JH
1086 break;
1087 case 0:
1088 /* The source could be in the get_sha1() format
1089 * not a reference name. :refs/other is a
1090 * way to delete 'other' ref at the remote end.
1091 */
1092 matched_src = try_explicit_object_name(rs->src);
7dfee372 1093 if (!matched_src)
9a7bbd1d 1094 return error("src refspec %s does not match any.", rs->src);
cdf690e5 1095 copy_src = 0;
54a8ad92
JH
1096 break;
1097 default:
9a7bbd1d 1098 return error("src refspec %s matches more than one.", rs->src);
54a8ad92 1099 }
3c8b7df1 1100
4491e62a 1101 if (!dst_value) {
9f0ea7e8
DB
1102 unsigned char sha1[20];
1103 int flag;
1104
8cad4744 1105 dst_value = resolve_ref_unsafe(matched_src->name, sha1, 1, &flag);
9f0ea7e8
DB
1106 if (!dst_value ||
1107 ((flag & REF_ISSYMREF) &&
1108 prefixcmp(dst_value, "refs/heads/")))
1109 die("%s cannot be resolved to branch.",
1110 matched_src->name);
4491e62a 1111 }
3c8b7df1 1112
54a8ad92
JH
1113 switch (count_refspec_match(dst_value, dst, &matched_dst)) {
1114 case 1:
1115 break;
1116 case 0:
163f0ee5 1117 if (!memcmp(dst_value, "refs/", 5))
1d735267 1118 matched_dst = make_linked_ref(dst_value, dst_tail);
5742c82b
JK
1119 else if (is_null_sha1(matched_src->new_sha1))
1120 error("unable to delete '%s': remote ref does not exist",
1121 dst_value);
eeefa7c9 1122 else if ((dst_guess = guess_ref(dst_value, matched_src)))
f8aae120 1123 matched_dst = make_linked_ref(dst_guess, dst_tail);
3c8b7df1 1124 else
f8aae120
JK
1125 error("unable to push to unqualified destination: %s\n"
1126 "The destination refspec neither matches an "
1127 "existing ref on the remote nor\n"
1128 "begins with refs/, and we are unable to "
1129 "guess a prefix based on the source ref.",
1130 dst_value);
54a8ad92
JH
1131 break;
1132 default:
3c8b7df1 1133 matched_dst = NULL;
54a8ad92
JH
1134 error("dst refspec %s matches more than one.",
1135 dst_value);
1136 break;
1137 }
9a7bbd1d
JK
1138 if (!matched_dst)
1139 return -1;
1140 if (matched_dst->peer_ref)
1141 return error("dst ref %s receives from more than one src.",
54a8ad92 1142 matched_dst->name);
54a8ad92 1143 else {
cdf690e5 1144 matched_dst->peer_ref = copy_src ? copy_ref(matched_src) : matched_src;
54a8ad92 1145 matched_dst->force = rs->force;
6b62816c 1146 }
9a7bbd1d 1147 return 0;
54a8ad92
JH
1148}
1149
1150static int match_explicit_refs(struct ref *src, struct ref *dst,
1151 struct ref ***dst_tail, struct refspec *rs,
1152 int rs_nr)
1153{
1154 int i, errs;
1155 for (i = errs = 0; i < rs_nr; i++)
9a7bbd1d
JK
1156 errs += match_explicit(src, dst, dst_tail, &rs[i]);
1157 return errs;
6b62816c
DB
1158}
1159
db70a04c 1160static char *get_ref_match(const struct refspec *rs, int rs_nr, const struct ref *ref,
6ddba5e2 1161 int send_mirror, int direction, const struct refspec **ret_pat)
8558fd9e 1162{
db70a04c
FC
1163 const struct refspec *pat;
1164 char *name;
8558fd9e 1165 int i;
a83619d6 1166 int matching_refs = -1;
8558fd9e 1167 for (i = 0; i < rs_nr; i++) {
a83619d6
PB
1168 if (rs[i].matching &&
1169 (matching_refs == -1 || rs[i].force)) {
1170 matching_refs = i;
1171 continue;
1172 }
1173
db70a04c
FC
1174 if (rs[i].pattern) {
1175 const char *dst_side = rs[i].dst ? rs[i].dst : rs[i].src;
6ddba5e2
FC
1176 int match;
1177 if (direction == FROM_SRC)
1178 match = match_name_with_pattern(rs[i].src, ref->name, dst_side, &name);
1179 else
1180 match = match_name_with_pattern(dst_side, ref->name, rs[i].src, &name);
1181 if (match) {
db70a04c
FC
1182 matching_refs = i;
1183 break;
1184 }
1185 }
8558fd9e 1186 }
db70a04c 1187 if (matching_refs == -1)
a83619d6 1188 return NULL;
db70a04c
FC
1189
1190 pat = rs + matching_refs;
1191 if (pat->matching) {
1192 /*
1193 * "matching refs"; traditionally we pushed everything
1194 * including refs outside refs/heads/ hierarchy, but
1195 * that does not make much sense these days.
1196 */
1197 if (!send_mirror && prefixcmp(ref->name, "refs/heads/"))
1198 return NULL;
1199 name = xstrdup(ref->name);
1200 }
1201 if (ret_pat)
1202 *ret_pat = pat;
1203 return name;
8558fd9e
DB
1204}
1205
6d2bf96e
CB
1206static struct ref **tail_ref(struct ref **head)
1207{
1208 struct ref **tail = head;
1209 while (*tail)
1210 tail = &((*tail)->next);
1211 return tail;
1212}
1213
c2aba155
JH
1214struct tips {
1215 struct commit **tip;
1216 int nr, alloc;
1217};
1218
1219static void add_to_tips(struct tips *tips, const unsigned char *sha1)
1220{
1221 struct commit *commit;
1222
1223 if (is_null_sha1(sha1))
1224 return;
1225 commit = lookup_commit_reference_gently(sha1, 1);
1226 if (!commit || (commit->object.flags & TMP_MARK))
1227 return;
1228 commit->object.flags |= TMP_MARK;
1229 ALLOC_GROW(tips->tip, tips->nr + 1, tips->alloc);
1230 tips->tip[tips->nr++] = commit;
1231}
1232
1233static void add_missing_tags(struct ref *src, struct ref **dst, struct ref ***dst_tail)
1234{
1235 struct string_list dst_tag = STRING_LIST_INIT_NODUP;
1236 struct string_list src_tag = STRING_LIST_INIT_NODUP;
1237 struct string_list_item *item;
1238 struct ref *ref;
1239 struct tips sent_tips;
1240
1241 /*
1242 * Collect everything we know they would have at the end of
1243 * this push, and collect all tags they have.
1244 */
1245 memset(&sent_tips, 0, sizeof(sent_tips));
1246 for (ref = *dst; ref; ref = ref->next) {
1247 if (ref->peer_ref &&
1248 !is_null_sha1(ref->peer_ref->new_sha1))
1249 add_to_tips(&sent_tips, ref->peer_ref->new_sha1);
1250 else
1251 add_to_tips(&sent_tips, ref->old_sha1);
1252 if (!prefixcmp(ref->name, "refs/tags/"))
1253 string_list_append(&dst_tag, ref->name);
1254 }
1255 clear_commit_marks_many(sent_tips.nr, sent_tips.tip, TMP_MARK);
1256
1257 sort_string_list(&dst_tag);
1258
1259 /* Collect tags they do not have. */
1260 for (ref = src; ref; ref = ref->next) {
1261 if (prefixcmp(ref->name, "refs/tags/"))
1262 continue; /* not a tag */
1263 if (string_list_has_string(&dst_tag, ref->name))
1264 continue; /* they already have it */
1265 if (sha1_object_info(ref->new_sha1, NULL) != OBJ_TAG)
1266 continue; /* be conservative */
1267 item = string_list_append(&src_tag, ref->name);
1268 item->util = ref;
1269 }
1270 string_list_clear(&dst_tag, 0);
1271
1272 /*
1273 * At this point, src_tag lists tags that are missing from
1274 * dst, and sent_tips lists the tips we are pushing or those
1275 * that we know they already have. An element in the src_tag
1276 * that is an ancestor of any of the sent_tips needs to be
1277 * sent to the other side.
1278 */
1279 if (sent_tips.nr) {
1280 for_each_string_list_item(item, &src_tag) {
1281 struct ref *ref = item->util;
1282 struct ref *dst_ref;
1283 struct commit *commit;
1284
1285 if (is_null_sha1(ref->new_sha1))
1286 continue;
1287 commit = lookup_commit_reference_gently(ref->new_sha1, 1);
1288 if (!commit)
1289 /* not pushing a commit, which is not an error */
1290 continue;
1291
1292 /*
1293 * Is this tag, which they do not have, reachable from
1294 * any of the commits we are sending?
1295 */
1296 if (!in_merge_bases_many(commit, sent_tips.nr, sent_tips.tip))
1297 continue;
1298
1299 /* Add it in */
1300 dst_ref = make_linked_ref(ref->name, dst_tail);
1301 hashcpy(dst_ref->new_sha1, ref->new_sha1);
1302 dst_ref->peer_ref = copy_ref(ref);
1303 }
1304 }
1305 string_list_clear(&src_tag, 0);
1306 free(sent_tips.tip);
1307}
1308
54a8ad92 1309/*
29753cdd
JH
1310 * Given the set of refs the local repository has, the set of refs the
1311 * remote repository has, and the refspec used for push, determine
1312 * what remote refs we will update and with what value by setting
1313 * peer_ref (which object is being pushed) and force (if the push is
1314 * forced) in elements of "dst". The function may add new elements to
1315 * dst (e.g. pushing to a new branch, done in match_explicit_refs).
54a8ad92 1316 */
29753cdd
JH
1317int match_push_refs(struct ref *src, struct ref **dst,
1318 int nr_refspec, const char **refspec, int flags)
6b62816c 1319{
a83619d6 1320 struct refspec *rs;
28b9d6e5
AW
1321 int send_all = flags & MATCH_REFS_ALL;
1322 int send_mirror = flags & MATCH_REFS_MIRROR;
6ddba5e2 1323 int send_prune = flags & MATCH_REFS_PRUNE;
5f48cb95 1324 int errs;
2af202be 1325 static const char *default_refspec[] = { ":", NULL };
b1d8b1f3 1326 struct ref *ref, **dst_tail = tail_ref(dst);
6b62816c 1327
a83619d6
PB
1328 if (!nr_refspec) {
1329 nr_refspec = 1;
1330 refspec = default_refspec;
1331 }
1332 rs = parse_push_refspec(nr_refspec, (const char **) refspec);
6d2bf96e 1333 errs = match_explicit_refs(src, *dst, &dst_tail, rs, nr_refspec);
6b62816c
DB
1334
1335 /* pick the remainder */
b1d8b1f3 1336 for (ref = src; ref; ref = ref->next) {
6b62816c 1337 struct ref *dst_peer;
6e66bf3c
AR
1338 const struct refspec *pat = NULL;
1339 char *dst_name;
db70a04c 1340
6ddba5e2 1341 dst_name = get_ref_match(rs, nr_refspec, ref, send_mirror, FROM_SRC, &pat);
db70a04c 1342 if (!dst_name)
a83619d6
PB
1343 continue;
1344
6d2bf96e 1345 dst_peer = find_ref_by_name(*dst, dst_name);
a83619d6
PB
1346 if (dst_peer) {
1347 if (dst_peer->peer_ref)
1348 /* We're already sending something to this ref. */
1349 goto free_name;
a83619d6
PB
1350 } else {
1351 if (pat->matching && !(send_all || send_mirror))
1352 /*
1353 * Remote doesn't have it, and we have no
1354 * explicit pattern, and we don't have
1355 * --all nor --mirror.
1356 */
1357 goto free_name;
28b9d6e5 1358
6b62816c 1359 /* Create a new one and link it */
6d2bf96e 1360 dst_peer = make_linked_ref(dst_name, &dst_tail);
b1d8b1f3 1361 hashcpy(dst_peer->new_sha1, ref->new_sha1);
6b62816c 1362 }
b1d8b1f3 1363 dst_peer->peer_ref = copy_ref(ref);
a83619d6 1364 dst_peer->force = pat->force;
6e66bf3c
AR
1365 free_name:
1366 free(dst_name);
6b62816c 1367 }
c2aba155
JH
1368
1369 if (flags & MATCH_REFS_FOLLOW_TAGS)
1370 add_missing_tags(src, dst, &dst_tail);
1371
6ddba5e2
FC
1372 if (send_prune) {
1373 /* check for missing refs on the remote */
1374 for (ref = *dst; ref; ref = ref->next) {
1375 char *src_name;
1376
1377 if (ref->peer_ref)
1378 /* We're already sending something to this ref. */
1379 continue;
1380
1381 src_name = get_ref_match(rs, nr_refspec, ref, send_mirror, FROM_DST, NULL);
1382 if (src_name) {
1383 if (!find_ref_by_name(src, src_name))
1384 ref->peer_ref = alloc_delete_ref();
1385 free(src_name);
1386 }
1387 }
1388 }
5f48cb95
JS
1389 if (errs)
1390 return -1;
6b62816c
DB
1391 return 0;
1392}
cf818348 1393
20e8b465
TRC
1394void set_ref_status_for_push(struct ref *remote_refs, int send_mirror,
1395 int force_update)
1396{
1397 struct ref *ref;
1398
1399 for (ref = remote_refs; ref; ref = ref->next) {
8c5f6f71
CR
1400 int force_ref_update = ref->force || force_update;
1401
20e8b465
TRC
1402 if (ref->peer_ref)
1403 hashcpy(ref->new_sha1, ref->peer_ref->new_sha1);
1404 else if (!send_mirror)
1405 continue;
1406
1407 ref->deletion = is_null_sha1(ref->new_sha1);
1408 if (!ref->deletion &&
1409 !hashcmp(ref->old_sha1, ref->new_sha1)) {
1410 ref->status = REF_STATUS_UPTODATE;
1411 continue;
1412 }
1413
a272b289 1414 /*
256b9d70
JH
1415 * Decide whether an individual refspec A:B can be
1416 * pushed. The push will succeed if any of the
1417 * following are true:
20e8b465 1418 *
a272b289 1419 * (1) the remote reference B does not exist
20e8b465 1420 *
a272b289
CR
1421 * (2) the remote reference B is being removed (i.e.,
1422 * pushing :B where no source is specified)
20e8b465 1423 *
256b9d70
JH
1424 * (3) the destination is not under refs/tags/, and
1425 * if the old and new value is a commit, the new
1426 * is a descendant of the old.
20e8b465 1427 *
a272b289
CR
1428 * (4) it is forced using the +A:B notation, or by
1429 * passing the --force argument
20e8b465
TRC
1430 */
1431
5ece083f 1432 if (!ref->deletion && !is_null_sha1(ref->old_sha1)) {
0f4d498d
JH
1433 int why = 0; /* why would this push require --force? */
1434
1435 if (!prefixcmp(ref->name, "refs/tags/"))
1436 why = REF_STATUS_REJECT_ALREADY_EXISTS;
75e5c0dc
JH
1437 else if (!has_sha1_file(ref->old_sha1))
1438 why = REF_STATUS_REJECT_FETCH_FIRST;
1439 else if (!lookup_commit_reference_gently(ref->old_sha1, 1) ||
1440 !lookup_commit_reference_gently(ref->new_sha1, 1))
1441 why = REF_STATUS_REJECT_NEEDS_FORCE;
1442 else if (!ref_newer(ref->new_sha1, ref->old_sha1))
0f4d498d
JH
1443 why = REF_STATUS_REJECT_NONFASTFORWARD;
1444
1445 if (!force_ref_update)
1446 ref->status = why;
1447 else if (why)
5ece083f 1448 ref->forced_update = 1;
20e8b465
TRC
1449 }
1450 }
1451}
1452
cf818348
DB
1453struct branch *branch_get(const char *name)
1454{
1455 struct branch *ret;
1456
1457 read_config();
1458 if (!name || !*name || !strcmp(name, "HEAD"))
1459 ret = current_branch;
1460 else
1461 ret = make_branch(name, 0);
1462 if (ret && ret->remote_name) {
1463 ret->remote = remote_get(ret->remote_name);
1464 if (ret->merge_nr) {
1465 int i;
1466 ret->merge = xcalloc(sizeof(*ret->merge),
1467 ret->merge_nr);
1468 for (i = 0; i < ret->merge_nr; i++) {
1469 ret->merge[i] = xcalloc(1, sizeof(**ret->merge));
1470 ret->merge[i]->src = xstrdup(ret->merge_name[i]);
5e6e2b48
MG
1471 if (remote_find_tracking(ret->remote, ret->merge[i])
1472 && !strcmp(ret->remote_name, "."))
1473 ret->merge[i]->dst = xstrdup(ret->merge_name[i]);
cf818348
DB
1474 }
1475 }
1476 }
1477 return ret;
1478}
1479
1480int branch_has_merge_config(struct branch *branch)
1481{
1482 return branch && !!branch->merge;
1483}
1484
85682c19
SP
1485int branch_merge_matches(struct branch *branch,
1486 int i,
1487 const char *refname)
cf818348 1488{
85682c19 1489 if (!branch || i < 0 || i >= branch->merge_nr)
cf818348 1490 return 0;
605b4978 1491 return refname_match(branch->merge[i]->src, refname, ref_fetch_rules);
cf818348 1492}
d71ab174 1493
f8fb971e
JH
1494static int ignore_symref_update(const char *refname)
1495{
1496 unsigned char sha1[20];
1497 int flag;
1498
1499 if (!resolve_ref_unsafe(refname, sha1, 0, &flag))
1500 return 0; /* non-existing refs are OK */
1501 return (flag & REF_ISSYMREF);
1502}
1503
4577370e 1504static struct ref *get_expanded_map(const struct ref *remote_refs,
d71ab174
DB
1505 const struct refspec *refspec)
1506{
4577370e 1507 const struct ref *ref;
d71ab174
DB
1508 struct ref *ret = NULL;
1509 struct ref **tail = &ret;
1510
e928213f 1511 char *expn_name;
d71ab174
DB
1512
1513 for (ref = remote_refs; ref; ref = ref->next) {
1514 if (strchr(ref->name, '^'))
1515 continue; /* a dereference item */
e928213f 1516 if (match_name_with_pattern(refspec->src, ref->name,
f8fb971e
JH
1517 refspec->dst, &expn_name) &&
1518 !ignore_symref_update(expn_name)) {
d71ab174 1519 struct ref *cpy = copy_ref(ref);
d71ab174 1520
e928213f
DB
1521 cpy->peer_ref = alloc_ref(expn_name);
1522 free(expn_name);
d71ab174
DB
1523 if (refspec->force)
1524 cpy->peer_ref->force = 1;
1525 *tail = cpy;
1526 tail = &cpy->next;
1527 }
1528 }
1529
1530 return ret;
1531}
1532
4577370e 1533static const struct ref *find_ref_by_name_abbrev(const struct ref *refs, const char *name)
d71ab174 1534{
4577370e 1535 const struct ref *ref;
d71ab174 1536 for (ref = refs; ref; ref = ref->next) {
605b4978 1537 if (refname_match(name, ref->name, ref_fetch_rules))
d71ab174
DB
1538 return ref;
1539 }
1540 return NULL;
1541}
1542
4577370e 1543struct ref *get_remote_ref(const struct ref *remote_refs, const char *name)
d71ab174 1544{
4577370e 1545 const struct ref *ref = find_ref_by_name_abbrev(remote_refs, name);
d71ab174
DB
1546
1547 if (!ref)
9ad7c5ae 1548 return NULL;
d71ab174
DB
1549
1550 return copy_ref(ref);
1551}
1552
1553static struct ref *get_local_ref(const char *name)
1554{
3eb96997 1555 if (!name || name[0] == '\0')
d71ab174
DB
1556 return NULL;
1557
59c69c0c
RS
1558 if (!prefixcmp(name, "refs/"))
1559 return alloc_ref(name);
d71ab174
DB
1560
1561 if (!prefixcmp(name, "heads/") ||
1562 !prefixcmp(name, "tags/") ||
8009768e
RS
1563 !prefixcmp(name, "remotes/"))
1564 return alloc_ref_with_prefix("refs/", 5, name);
d71ab174 1565
8009768e 1566 return alloc_ref_with_prefix("refs/heads/", 11, name);
d71ab174
DB
1567}
1568
4577370e 1569int get_fetch_map(const struct ref *remote_refs,
d71ab174 1570 const struct refspec *refspec,
9ad7c5ae
JH
1571 struct ref ***tail,
1572 int missing_ok)
d71ab174 1573{
ef00d150 1574 struct ref *ref_map, **rmp;
d71ab174
DB
1575
1576 if (refspec->pattern) {
1577 ref_map = get_expanded_map(remote_refs, refspec);
1578 } else {
9ad7c5ae
JH
1579 const char *name = refspec->src[0] ? refspec->src : "HEAD";
1580
6e7b66ee
JH
1581 if (refspec->exact_sha1) {
1582 ref_map = alloc_ref(name);
1583 get_sha1_hex(name, ref_map->old_sha1);
1584 } else {
1585 ref_map = get_remote_ref(remote_refs, name);
1586 }
9ad7c5ae
JH
1587 if (!missing_ok && !ref_map)
1588 die("Couldn't find remote ref %s", name);
1589 if (ref_map) {
1590 ref_map->peer_ref = get_local_ref(refspec->dst);
1591 if (ref_map->peer_ref && refspec->force)
1592 ref_map->peer_ref->force = 1;
1593 }
d71ab174
DB
1594 }
1595
ef00d150
DB
1596 for (rmp = &ref_map; *rmp; ) {
1597 if ((*rmp)->peer_ref) {
5c08c1f2
JH
1598 if (prefixcmp((*rmp)->peer_ref->name, "refs/") ||
1599 check_refname_format((*rmp)->peer_ref->name, 0)) {
ef00d150
DB
1600 struct ref *ignore = *rmp;
1601 error("* Ignoring funny ref '%s' locally",
1602 (*rmp)->peer_ref->name);
1603 *rmp = (*rmp)->next;
1604 free(ignore->peer_ref);
1605 free(ignore);
1606 continue;
1607 }
1608 }
1609 rmp = &((*rmp)->next);
d71ab174
DB
1610 }
1611
8f70a765
AR
1612 if (ref_map)
1613 tail_link_ref(ref_map, tail);
d71ab174
DB
1614
1615 return 0;
1616}
be885d96
DB
1617
1618int resolve_remote_symref(struct ref *ref, struct ref *list)
1619{
1620 if (!ref->symref)
1621 return 0;
1622 for (; list; list = list->next)
1623 if (!strcmp(ref->symref, list->name)) {
1624 hashcpy(ref->old_sha1, list->old_sha1);
1625 return 0;
1626 }
1627 return 1;
1628}
6d21bf96 1629
ec8452d5
JS
1630static void unmark_and_free(struct commit_list *list, unsigned int mark)
1631{
1632 while (list) {
1633 struct commit_list *temp = list;
1634 temp->item->object.flags &= ~mark;
1635 list = temp->next;
1636 free(temp);
1637 }
1638}
1639
1640int ref_newer(const unsigned char *new_sha1, const unsigned char *old_sha1)
1641{
1642 struct object *o;
1643 struct commit *old, *new;
1644 struct commit_list *list, *used;
1645 int found = 0;
1646
75e5c0dc
JH
1647 /*
1648 * Both new and old must be commit-ish and new is descendant of
ec8452d5
JS
1649 * old. Otherwise we require --force.
1650 */
1651 o = deref_tag(parse_object(old_sha1), NULL, 0);
1652 if (!o || o->type != OBJ_COMMIT)
1653 return 0;
1654 old = (struct commit *) o;
1655
1656 o = deref_tag(parse_object(new_sha1), NULL, 0);
1657 if (!o || o->type != OBJ_COMMIT)
1658 return 0;
1659 new = (struct commit *) o;
1660
1661 if (parse_commit(new) < 0)
1662 return 0;
1663
1664 used = list = NULL;
1665 commit_list_insert(new, &list);
1666 while (list) {
1667 new = pop_most_recent_commit(&list, TMP_MARK);
1668 commit_list_insert(new, &used);
1669 if (new == old) {
1670 found = 1;
1671 break;
1672 }
1673 }
1674 unmark_and_free(list, TMP_MARK);
1675 unmark_and_free(used, TMP_MARK);
1676 return found;
1677}
1678
6d21bf96
JH
1679/*
1680 * Return true if there is anything to report, otherwise false.
1681 */
1682int stat_tracking_info(struct branch *branch, int *num_ours, int *num_theirs)
1683{
1684 unsigned char sha1[20];
1685 struct commit *ours, *theirs;
1686 char symmetric[84];
1687 struct rev_info revs;
1688 const char *rev_argv[10], *base;
1689 int rev_argc;
1690
1691 /*
1692 * Nothing to report unless we are marked to build on top of
1693 * somebody else.
1694 */
1695 if (!branch ||
1696 !branch->merge || !branch->merge[0] || !branch->merge[0]->dst)
1697 return 0;
1698
1699 /*
1700 * If what we used to build on no longer exists, there is
1701 * nothing to report.
1702 */
1703 base = branch->merge[0]->dst;
c6893323 1704 if (read_ref(base, sha1))
6d21bf96 1705 return 0;
57ffc5f8 1706 theirs = lookup_commit_reference(sha1);
6d21bf96
JH
1707 if (!theirs)
1708 return 0;
1709
c6893323 1710 if (read_ref(branch->refname, sha1))
6d21bf96 1711 return 0;
57ffc5f8 1712 ours = lookup_commit_reference(sha1);
6d21bf96
JH
1713 if (!ours)
1714 return 0;
1715
1716 /* are we the same? */
1717 if (theirs == ours)
1718 return 0;
1719
8fbf879e 1720 /* Run "rev-list --left-right ours...theirs" internally... */
6d21bf96
JH
1721 rev_argc = 0;
1722 rev_argv[rev_argc++] = NULL;
1723 rev_argv[rev_argc++] = "--left-right";
1724 rev_argv[rev_argc++] = symmetric;
1725 rev_argv[rev_argc++] = "--";
1726 rev_argv[rev_argc] = NULL;
1727
1728 strcpy(symmetric, sha1_to_hex(ours->object.sha1));
1729 strcpy(symmetric + 40, "...");
1730 strcpy(symmetric + 43, sha1_to_hex(theirs->object.sha1));
1731
1732 init_revisions(&revs, NULL);
1733 setup_revisions(rev_argc, rev_argv, &revs, NULL);
1734 prepare_revision_walk(&revs);
1735
1736 /* ... and count the commits on each side. */
1737 *num_ours = 0;
1738 *num_theirs = 0;
1739 while (1) {
1740 struct commit *c = get_revision(&revs);
1741 if (!c)
1742 break;
1743 if (c->object.flags & SYMMETRIC_LEFT)
1744 (*num_ours)++;
1745 else
1746 (*num_theirs)++;
1747 }
c0234b2e
JH
1748
1749 /* clear object flags smudged by the above traversal */
1750 clear_commit_marks(ours, ALL_REV_FLAGS);
1751 clear_commit_marks(theirs, ALL_REV_FLAGS);
6d21bf96
JH
1752 return 1;
1753}
1754
1755/*
1756 * Return true when there is anything to report, otherwise false.
1757 */
1758int format_tracking_info(struct branch *branch, struct strbuf *sb)
1759{
1760 int num_ours, num_theirs;
4de53ce0 1761 const char *base;
6d21bf96
JH
1762
1763 if (!stat_tracking_info(branch, &num_ours, &num_theirs))
1764 return 0;
1765
1766 base = branch->merge[0]->dst;
45972ffb 1767 base = shorten_unambiguous_ref(base, 0);
c190ced6 1768 if (!num_theirs) {
8a5b7494
JX
1769 strbuf_addf(sb,
1770 Q_("Your branch is ahead of '%s' by %d commit.\n",
1771 "Your branch is ahead of '%s' by %d commits.\n",
1772 num_ours),
1773 base, num_ours);
491e3075
JK
1774 if (advice_status_hints)
1775 strbuf_addf(sb,
1776 _(" (use \"git push\" to publish your local commits)\n"));
c190ced6 1777 } else if (!num_ours) {
8a5b7494
JX
1778 strbuf_addf(sb,
1779 Q_("Your branch is behind '%s' by %d commit, "
1780 "and can be fast-forwarded.\n",
1781 "Your branch is behind '%s' by %d commits, "
1782 "and can be fast-forwarded.\n",
1783 num_theirs),
1784 base, num_theirs);
491e3075
JK
1785 if (advice_status_hints)
1786 strbuf_addf(sb,
1787 _(" (use \"git pull\" to update your local branch)\n"));
c190ced6 1788 } else {
8a5b7494
JX
1789 strbuf_addf(sb,
1790 Q_("Your branch and '%s' have diverged,\n"
1791 "and have %d and %d different commit each, "
1792 "respectively.\n",
1793 "Your branch and '%s' have diverged,\n"
1794 "and have %d and %d different commits each, "
1795 "respectively.\n",
1796 num_theirs),
1797 base, num_ours, num_theirs);
491e3075
JK
1798 if (advice_status_hints)
1799 strbuf_addf(sb,
1800 _(" (use \"git pull\" to merge the remote branch into yours)\n"));
c190ced6 1801 }
6d21bf96
JH
1802 return 1;
1803}
454e2025
JS
1804
1805static int one_local_ref(const char *refname, const unsigned char *sha1, int flag, void *cb_data)
1806{
1807 struct ref ***local_tail = cb_data;
1808 struct ref *ref;
1809 int len;
1810
1811 /* we already know it starts with refs/ to get here */
8d9c5010 1812 if (check_refname_format(refname + 5, 0))
454e2025
JS
1813 return 0;
1814
1815 len = strlen(refname) + 1;
1816 ref = xcalloc(1, sizeof(*ref) + len);
1817 hashcpy(ref->new_sha1, sha1);
1818 memcpy(ref->name, refname, len);
1819 **local_tail = ref;
1820 *local_tail = &ref->next;
1821 return 0;
1822}
1823
1824struct ref *get_local_heads(void)
1825{
55f0566f 1826 struct ref *local_refs = NULL, **local_tail = &local_refs;
454e2025
JS
1827 for_each_ref(one_local_ref, &local_tail);
1828 return local_refs;
1829}
8ef51733 1830
4229f1fa
JS
1831struct ref *guess_remote_head(const struct ref *head,
1832 const struct ref *refs,
1833 int all)
8ef51733 1834{
8ef51733 1835 const struct ref *r;
4229f1fa
JS
1836 struct ref *list = NULL;
1837 struct ref **tail = &list;
8ef51733 1838
6cb4e6cc 1839 if (!head)
8ef51733
JS
1840 return NULL;
1841
fbb074c2
JK
1842 /*
1843 * Some transports support directly peeking at
1844 * where HEAD points; if that is the case, then
1845 * we don't have to guess.
1846 */
1847 if (head->symref)
1848 return copy_ref(find_ref_by_name(refs, head->symref));
1849
8ef51733 1850 /* If refs/heads/master could be right, it is. */
4229f1fa
JS
1851 if (!all) {
1852 r = find_ref_by_name(refs, "refs/heads/master");
1853 if (r && !hashcmp(r->old_sha1, head->old_sha1))
1854 return copy_ref(r);
1855 }
8ef51733
JS
1856
1857 /* Look for another ref that points there */
4229f1fa 1858 for (r = refs; r; r = r->next) {
61adfd30
JK
1859 if (r != head &&
1860 !prefixcmp(r->name, "refs/heads/") &&
1861 !hashcmp(r->old_sha1, head->old_sha1)) {
4229f1fa
JS
1862 *tail = copy_ref(r);
1863 tail = &((*tail)->next);
1864 if (!all)
1865 break;
1866 }
1867 }
8ef51733 1868
4229f1fa 1869 return list;
8ef51733 1870}
f2ef6075
JS
1871
1872struct stale_heads_info {
f2ef6075
JS
1873 struct string_list *ref_names;
1874 struct ref **stale_refs_tail;
ed43de6e
CMN
1875 struct refspec *refs;
1876 int ref_count;
f2ef6075
JS
1877};
1878
1879static int get_stale_heads_cb(const char *refname,
1880 const unsigned char *sha1, int flags, void *cb_data)
1881{
1882 struct stale_heads_info *info = cb_data;
ed43de6e
CMN
1883 struct refspec query;
1884 memset(&query, 0, sizeof(struct refspec));
1885 query.dst = (char *)refname;
1886
1887 if (query_refspecs(info->refs, info->ref_count, &query))
1888 return 0; /* No matches */
1889
1890 /*
1891 * If we did find a suitable refspec and it's not a symref and
1892 * it's not in the list of refs that currently exist in that
1893 * remote we consider it to be stale.
1894 */
1895 if (!((flags & REF_ISSYMREF) ||
1896 string_list_has_string(info->ref_names, query.src))) {
1897 struct ref *ref = make_linked_ref(refname, &info->stale_refs_tail);
1898 hashcpy(ref->new_sha1, sha1);
f2ef6075 1899 }
ed43de6e
CMN
1900
1901 free(query.src);
f2ef6075
JS
1902 return 0;
1903}
1904
ed43de6e 1905struct ref *get_stale_heads(struct refspec *refs, int ref_count, struct ref *fetch_map)
f2ef6075
JS
1906{
1907 struct ref *ref, *stale_refs = NULL;
183113a5 1908 struct string_list ref_names = STRING_LIST_INIT_NODUP;
f2ef6075 1909 struct stale_heads_info info;
f2ef6075
JS
1910 info.ref_names = &ref_names;
1911 info.stale_refs_tail = &stale_refs;
ed43de6e
CMN
1912 info.refs = refs;
1913 info.ref_count = ref_count;
f2ef6075 1914 for (ref = fetch_map; ref; ref = ref->next)
1d2f80fa 1915 string_list_append(&ref_names, ref->name);
f2ef6075
JS
1916 sort_string_list(&ref_names);
1917 for_each_ref(get_stale_heads_cb, &info);
1918 string_list_clear(&ref_names, 0);
1919 return stale_refs;
1920}