t5516 (fetch-push): drop implicit arguments from helper functions
[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;
fa685bdf 52static int explicit_default_remote_name;
cf818348 53
d071d942 54static struct rewrites rewrites;
1c2eafb8 55static struct rewrites rewrites_push;
55029ae4 56
5751f490
DB
57#define BUF_SIZE (2048)
58static char buffer[BUF_SIZE];
59
0a4da29d
DB
60static int valid_remote(const struct remote *remote)
61{
c578f51d 62 return (!!remote->url) || (!!remote->foreign_vcs);
0a4da29d
DB
63}
64
d071d942 65static const char *alias_url(const char *url, struct rewrites *r)
55029ae4
DB
66{
67 int i, j;
844112ca
JH
68 char *ret;
69 struct counted_string *longest;
70 int longest_i;
71
72 longest = NULL;
73 longest_i = -1;
d071d942
JT
74 for (i = 0; i < r->rewrite_nr; i++) {
75 if (!r->rewrite[i])
55029ae4 76 continue;
d071d942
JT
77 for (j = 0; j < r->rewrite[i]->instead_of_nr; j++) {
78 if (!prefixcmp(url, r->rewrite[i]->instead_of[j].s) &&
844112ca 79 (!longest ||
d071d942
JT
80 longest->len < r->rewrite[i]->instead_of[j].len)) {
81 longest = &(r->rewrite[i]->instead_of[j]);
844112ca 82 longest_i = i;
55029ae4
DB
83 }
84 }
85 }
844112ca
JH
86 if (!longest)
87 return url;
88
d071d942 89 ret = xmalloc(r->rewrite[longest_i]->baselen +
844112ca 90 (strlen(url) - longest->len) + 1);
d071d942
JT
91 strcpy(ret, r->rewrite[longest_i]->base);
92 strcpy(ret + r->rewrite[longest_i]->baselen, url + longest->len);
844112ca 93 return ret;
55029ae4
DB
94}
95
5751f490
DB
96static void add_push_refspec(struct remote *remote, const char *ref)
97{
2d31347b
DB
98 ALLOC_GROW(remote->push_refspec,
99 remote->push_refspec_nr + 1,
100 remote->push_refspec_alloc);
101 remote->push_refspec[remote->push_refspec_nr++] = ref;
5751f490
DB
102}
103
5d46c9d4
DB
104static void add_fetch_refspec(struct remote *remote, const char *ref)
105{
2d31347b
DB
106 ALLOC_GROW(remote->fetch_refspec,
107 remote->fetch_refspec_nr + 1,
108 remote->fetch_refspec_alloc);
109 remote->fetch_refspec[remote->fetch_refspec_nr++] = ref;
5d46c9d4
DB
110}
111
28b91f8a 112static void add_url(struct remote *remote, const char *url)
5751f490 113{
2d31347b
DB
114 ALLOC_GROW(remote->url, remote->url_nr + 1, remote->url_alloc);
115 remote->url[remote->url_nr++] = url;
5751f490
DB
116}
117
20346234
MG
118static void add_pushurl(struct remote *remote, const char *pushurl)
119{
120 ALLOC_GROW(remote->pushurl, remote->pushurl_nr + 1, remote->pushurl_alloc);
121 remote->pushurl[remote->pushurl_nr++] = pushurl;
122}
123
1c2eafb8
JT
124static void add_pushurl_alias(struct remote *remote, const char *url)
125{
126 const char *pushurl = alias_url(url, &rewrites_push);
127 if (pushurl != url)
128 add_pushurl(remote, pushurl);
129}
130
131static void add_url_alias(struct remote *remote, const char *url)
132{
133 add_url(remote, alias_url(url, &rewrites));
134 add_pushurl_alias(remote, url);
135}
136
5751f490
DB
137static struct remote *make_remote(const char *name, int len)
138{
2d31347b
DB
139 struct remote *ret;
140 int i;
5751f490 141
2d31347b
DB
142 for (i = 0; i < remotes_nr; i++) {
143 if (len ? (!strncmp(name, remotes[i]->name, len) &&
144 !remotes[i]->name[len]) :
145 !strcmp(name, remotes[i]->name))
146 return remotes[i];
5751f490
DB
147 }
148
2d31347b
DB
149 ret = xcalloc(1, sizeof(struct remote));
150 ALLOC_GROW(remotes, remotes_nr + 1, remotes_alloc);
151 remotes[remotes_nr++] = ret;
5751f490 152 if (len)
2d31347b 153 ret->name = xstrndup(name, len);
5751f490 154 else
2d31347b
DB
155 ret->name = xstrdup(name);
156 return ret;
5751f490
DB
157}
158
cf818348
DB
159static void add_merge(struct branch *branch, const char *name)
160{
2d31347b
DB
161 ALLOC_GROW(branch->merge_name, branch->merge_nr + 1,
162 branch->merge_alloc);
163 branch->merge_name[branch->merge_nr++] = name;
cf818348
DB
164}
165
166static struct branch *make_branch(const char *name, int len)
167{
2d31347b
DB
168 struct branch *ret;
169 int i;
cf818348
DB
170 char *refname;
171
2d31347b
DB
172 for (i = 0; i < branches_nr; i++) {
173 if (len ? (!strncmp(name, branches[i]->name, len) &&
174 !branches[i]->name[len]) :
175 !strcmp(name, branches[i]->name))
176 return branches[i];
cf818348
DB
177 }
178
2d31347b
DB
179 ALLOC_GROW(branches, branches_nr + 1, branches_alloc);
180 ret = xcalloc(1, sizeof(struct branch));
181 branches[branches_nr++] = ret;
cf818348 182 if (len)
2d31347b 183 ret->name = xstrndup(name, len);
cf818348 184 else
2d31347b 185 ret->name = xstrdup(name);
e8eec71d 186 refname = xmalloc(strlen(name) + strlen("refs/heads/") + 1);
cf818348 187 strcpy(refname, "refs/heads/");
2d31347b
DB
188 strcpy(refname + strlen("refs/heads/"), ret->name);
189 ret->refname = refname;
cf818348 190
2d31347b 191 return ret;
cf818348
DB
192}
193
d071d942 194static struct rewrite *make_rewrite(struct rewrites *r, const char *base, int len)
55029ae4
DB
195{
196 struct rewrite *ret;
197 int i;
198
d071d942 199 for (i = 0; i < r->rewrite_nr; i++) {
844112ca 200 if (len
d071d942
JT
201 ? (len == r->rewrite[i]->baselen &&
202 !strncmp(base, r->rewrite[i]->base, len))
203 : !strcmp(base, r->rewrite[i]->base))
204 return r->rewrite[i];
55029ae4
DB
205 }
206
d071d942 207 ALLOC_GROW(r->rewrite, r->rewrite_nr + 1, r->rewrite_alloc);
55029ae4 208 ret = xcalloc(1, sizeof(struct rewrite));
d071d942 209 r->rewrite[r->rewrite_nr++] = ret;
844112ca 210 if (len) {
55029ae4 211 ret->base = xstrndup(base, len);
844112ca
JH
212 ret->baselen = len;
213 }
214 else {
55029ae4 215 ret->base = xstrdup(base);
844112ca
JH
216 ret->baselen = strlen(base);
217 }
55029ae4
DB
218 return ret;
219}
220
221static void add_instead_of(struct rewrite *rewrite, const char *instead_of)
222{
223 ALLOC_GROW(rewrite->instead_of, rewrite->instead_of_nr + 1, rewrite->instead_of_alloc);
844112ca
JH
224 rewrite->instead_of[rewrite->instead_of_nr].s = instead_of;
225 rewrite->instead_of[rewrite->instead_of_nr].len = strlen(instead_of);
226 rewrite->instead_of_nr++;
55029ae4
DB
227}
228
5751f490
DB
229static void read_remotes_file(struct remote *remote)
230{
231 FILE *f = fopen(git_path("remotes/%s", remote->name), "r");
232
233 if (!f)
234 return;
89cf4c70 235 remote->origin = REMOTE_REMOTES;
5751f490
DB
236 while (fgets(buffer, BUF_SIZE, f)) {
237 int value_list;
238 char *s, *p;
239
240 if (!prefixcmp(buffer, "URL:")) {
241 value_list = 0;
242 s = buffer + 4;
243 } else if (!prefixcmp(buffer, "Push:")) {
244 value_list = 1;
245 s = buffer + 5;
5d46c9d4
DB
246 } else if (!prefixcmp(buffer, "Pull:")) {
247 value_list = 2;
248 s = buffer + 5;
5751f490
DB
249 } else
250 continue;
251
252 while (isspace(*s))
253 s++;
254 if (!*s)
255 continue;
256
257 p = s + strlen(s);
258 while (isspace(p[-1]))
259 *--p = 0;
260
261 switch (value_list) {
262 case 0:
55029ae4 263 add_url_alias(remote, xstrdup(s));
5751f490
DB
264 break;
265 case 1:
266 add_push_refspec(remote, xstrdup(s));
267 break;
5d46c9d4
DB
268 case 2:
269 add_fetch_refspec(remote, xstrdup(s));
270 break;
5751f490
DB
271 }
272 }
273 fclose(f);
274}
275
276static void read_branches_file(struct remote *remote)
277{
278 const char *slash = strchr(remote->name, '/');
cf818348 279 char *frag;
f285a2d7 280 struct strbuf branch = STRBUF_INIT;
5751f490
DB
281 int n = slash ? slash - remote->name : 1000;
282 FILE *f = fopen(git_path("branches/%.*s", n, remote->name), "r");
283 char *s, *p;
284 int len;
285
286 if (!f)
287 return;
288 s = fgets(buffer, BUF_SIZE, f);
289 fclose(f);
290 if (!s)
291 return;
292 while (isspace(*s))
293 s++;
294 if (!*s)
295 return;
89cf4c70 296 remote->origin = REMOTE_BRANCHES;
5751f490
DB
297 p = s + strlen(s);
298 while (isspace(p[-1]))
299 *--p = 0;
300 len = p - s;
301 if (slash)
302 len += strlen(slash);
303 p = xmalloc(len + 1);
304 strcpy(p, s);
305 if (slash)
306 strcat(p, slash);
472fa4cd
DB
307
308 /*
309 * With "slash", e.g. "git fetch jgarzik/netdev-2.6" when
310 * reading from $GIT_DIR/branches/jgarzik fetches "HEAD" from
311 * the partial URL obtained from the branches file plus
312 * "/netdev-2.6" and does not store it in any tracking ref.
313 * #branch specifier in the file is ignored.
314 *
315 * Otherwise, the branches file would have URL and optionally
316 * #branch specified. The "master" (or specified) branch is
317 * fetched and stored in the local branch of the same name.
318 */
cf818348
DB
319 frag = strchr(p, '#');
320 if (frag) {
321 *(frag++) = '\0';
472fa4cd
DB
322 strbuf_addf(&branch, "refs/heads/%s", frag);
323 } else
324 strbuf_addstr(&branch, "refs/heads/master");
325 if (!slash) {
326 strbuf_addf(&branch, ":refs/heads/%s", remote->name);
cf818348 327 } else {
472fa4cd
DB
328 strbuf_reset(&branch);
329 strbuf_addstr(&branch, "HEAD:");
cf818348 330 }
55029ae4 331 add_url_alias(remote, p);
2af202be 332 add_fetch_refspec(remote, strbuf_detach(&branch, NULL));
18afe101
MK
333 /*
334 * Cogito compatible push: push current HEAD to remote #branch
335 * (master if missing)
336 */
337 strbuf_init(&branch, 0);
338 strbuf_addstr(&branch, "HEAD");
339 if (frag)
340 strbuf_addf(&branch, ":refs/heads/%s", frag);
341 else
342 strbuf_addstr(&branch, ":refs/heads/master");
2af202be 343 add_push_refspec(remote, strbuf_detach(&branch, NULL));
d71ab174 344 remote->fetch_tags = 1; /* always auto-follow */
5751f490
DB
345}
346
ef90d6d4 347static int handle_config(const char *key, const char *value, void *cb)
5751f490
DB
348{
349 const char *name;
350 const char *subkey;
351 struct remote *remote;
cf818348
DB
352 struct branch *branch;
353 if (!prefixcmp(key, "branch.")) {
354 name = key + 7;
355 subkey = strrchr(name, '.');
cf818348
DB
356 if (!subkey)
357 return 0;
896c0535 358 branch = make_branch(name, subkey - name);
cf818348 359 if (!strcmp(subkey, ".remote")) {
b4b63435
RR
360 if (git_config_string(&branch->remote_name, key, value))
361 return -1;
fa685bdf 362 if (branch == current_branch) {
cf818348 363 default_remote_name = branch->remote_name;
fa685bdf
DB
364 explicit_default_remote_name = 1;
365 }
d2370cc2
JH
366 } else if (!strcmp(subkey, ".merge")) {
367 if (!value)
368 return config_error_nonbool(key);
cf818348 369 add_merge(branch, xstrdup(value));
d2370cc2 370 }
cf818348 371 return 0;
5751f490 372 }
55029ae4
DB
373 if (!prefixcmp(key, "url.")) {
374 struct rewrite *rewrite;
60e3aba9 375 name = key + 4;
55029ae4
DB
376 subkey = strrchr(name, '.');
377 if (!subkey)
378 return 0;
55029ae4 379 if (!strcmp(subkey, ".insteadof")) {
1c2eafb8
JT
380 rewrite = make_rewrite(&rewrites, name, subkey - name);
381 if (!value)
382 return config_error_nonbool(key);
383 add_instead_of(rewrite, xstrdup(value));
384 } else if (!strcmp(subkey, ".pushinsteadof")) {
385 rewrite = make_rewrite(&rewrites_push, name, subkey - name);
55029ae4
DB
386 if (!value)
387 return config_error_nonbool(key);
388 add_instead_of(rewrite, xstrdup(value));
389 }
390 }
5751f490
DB
391 if (prefixcmp(key, "remote."))
392 return 0;
393 name = key + 7;
c82efafc
BC
394 if (*name == '/') {
395 warning("Config remote shorthand cannot begin with '/': %s",
396 name);
397 return 0;
398 }
5751f490
DB
399 subkey = strrchr(name, '.');
400 if (!subkey)
cd294bc3 401 return 0;
5751f490 402 remote = make_remote(name, subkey - name);
89cf4c70 403 remote->origin = REMOTE_CONFIG;
84bb2dfd
PB
404 if (!strcmp(subkey, ".mirror"))
405 remote->mirror = git_config_bool(key, value);
406 else if (!strcmp(subkey, ".skipdefaultupdate"))
407 remote->skip_default_update = git_config_bool(key, value);
7cc91a2f
BG
408 else if (!strcmp(subkey, ".skipfetchall"))
409 remote->skip_default_update = git_config_bool(key, value);
84bb2dfd
PB
410 else if (!strcmp(subkey, ".url")) {
411 const char *v;
412 if (git_config_string(&v, key, value))
413 return -1;
414 add_url(remote, v);
20346234
MG
415 } else if (!strcmp(subkey, ".pushurl")) {
416 const char *v;
417 if (git_config_string(&v, key, value))
418 return -1;
419 add_pushurl(remote, v);
5751f490 420 } else if (!strcmp(subkey, ".push")) {
84bb2dfd
PB
421 const char *v;
422 if (git_config_string(&v, key, value))
423 return -1;
424 add_push_refspec(remote, v);
5d46c9d4 425 } else if (!strcmp(subkey, ".fetch")) {
84bb2dfd
PB
426 const char *v;
427 if (git_config_string(&v, key, value))
428 return -1;
429 add_fetch_refspec(remote, v);
5751f490 430 } else if (!strcmp(subkey, ".receivepack")) {
84bb2dfd
PB
431 const char *v;
432 if (git_config_string(&v, key, value))
433 return -1;
5751f490 434 if (!remote->receivepack)
84bb2dfd 435 remote->receivepack = v;
5751f490
DB
436 else
437 error("more than one receivepack given, using the first");
0012ba21 438 } else if (!strcmp(subkey, ".uploadpack")) {
84bb2dfd
PB
439 const char *v;
440 if (git_config_string(&v, key, value))
441 return -1;
0012ba21 442 if (!remote->uploadpack)
84bb2dfd 443 remote->uploadpack = v;
0012ba21
DB
444 else
445 error("more than one uploadpack given, using the first");
d71ab174
DB
446 } else if (!strcmp(subkey, ".tagopt")) {
447 if (!strcmp(value, "--no-tags"))
448 remote->fetch_tags = -1;
944163a4
ST
449 else if (!strcmp(value, "--tags"))
450 remote->fetch_tags = 2;
14c98218 451 } else if (!strcmp(subkey, ".proxy")) {
84bb2dfd
PB
452 return git_config_string((const char **)&remote->http_proxy,
453 key, value);
c578f51d
DB
454 } else if (!strcmp(subkey, ".vcs")) {
455 return git_config_string(&remote->foreign_vcs, key, value);
84bb2dfd 456 }
5751f490
DB
457 return 0;
458}
459
55029ae4
DB
460static void alias_all_urls(void)
461{
462 int i, j;
463 for (i = 0; i < remotes_nr; i++) {
1c2eafb8 464 int add_pushurl_aliases;
55029ae4
DB
465 if (!remotes[i])
466 continue;
20346234 467 for (j = 0; j < remotes[i]->pushurl_nr; j++) {
d071d942 468 remotes[i]->pushurl[j] = alias_url(remotes[i]->pushurl[j], &rewrites);
20346234 469 }
1c2eafb8
JT
470 add_pushurl_aliases = remotes[i]->pushurl_nr == 0;
471 for (j = 0; j < remotes[i]->url_nr; j++) {
472 if (add_pushurl_aliases)
473 add_pushurl_alias(remotes[i], remotes[i]->url[j]);
474 remotes[i]->url[j] = alias_url(remotes[i]->url[j], &rewrites);
475 }
55029ae4
DB
476 }
477}
478
5751f490
DB
479static void read_config(void)
480{
481 unsigned char sha1[20];
482 const char *head_ref;
483 int flag;
2543d9b6 484 if (default_remote_name) /* did this already */
5751f490
DB
485 return;
486 default_remote_name = xstrdup("origin");
487 current_branch = NULL;
8cad4744 488 head_ref = resolve_ref_unsafe("HEAD", sha1, 0, &flag);
5751f490
DB
489 if (head_ref && (flag & REF_ISSYMREF) &&
490 !prefixcmp(head_ref, "refs/heads/")) {
cf818348
DB
491 current_branch =
492 make_branch(head_ref + strlen("refs/heads/"), 0);
5751f490 493 }
ef90d6d4 494 git_config(handle_config, NULL);
55029ae4 495 alias_all_urls();
5751f490
DB
496}
497
2cb1f36d
BC
498/*
499 * This function frees a refspec array.
500 * Warning: code paths should be checked to ensure that the src
501 * and dst pointers are always freeable pointers as well
502 * as the refspec pointer itself.
503 */
697d7f5d 504static void free_refspecs(struct refspec *refspec, int nr_refspec)
2cb1f36d
BC
505{
506 int i;
507
508 if (!refspec)
509 return;
510
511 for (i = 0; i < nr_refspec; i++) {
512 free(refspec[i].src);
513 free(refspec[i].dst);
514 }
515 free(refspec);
516}
517
24b6177e 518static struct refspec *parse_refspec_internal(int nr_refspec, const char **refspec, int fetch, int verify)
6b62816c
DB
519{
520 int i;
521 struct refspec *rs = xcalloc(sizeof(*rs), nr_refspec);
46220ca1 522
6b62816c 523 for (i = 0; i < nr_refspec; i++) {
47c6ef1c 524 size_t llen;
46220ca1
JH
525 int is_glob;
526 const char *lhs, *rhs;
8d9c5010 527 int flags;
46220ca1 528
8e76bf3f 529 is_glob = 0;
46220ca1
JH
530
531 lhs = refspec[i];
532 if (*lhs == '+') {
6b62816c 533 rs[i].force = 1;
46220ca1 534 lhs++;
6b62816c 535 }
46220ca1
JH
536
537 rhs = strrchr(lhs, ':');
a83619d6
PB
538
539 /*
540 * Before going on, special case ":" (or "+:") as a refspec
def24991 541 * for pushing matching refs.
a83619d6
PB
542 */
543 if (!fetch && rhs == lhs && rhs[1] == '\0') {
544 rs[i].matching = 1;
545 continue;
546 }
547
46220ca1 548 if (rhs) {
47c6ef1c 549 size_t rlen = strlen(++rhs);
abd2bde7 550 is_glob = (1 <= rlen && strchr(rhs, '*'));
08fbdb30 551 rs[i].dst = xstrndup(rhs, rlen);
6b62816c 552 }
ef00d150 553
46220ca1 554 llen = (rhs ? (rhs - lhs - 1) : strlen(lhs));
abd2bde7 555 if (1 <= llen && memchr(lhs, '*', llen)) {
7d19da46
JH
556 if ((rhs && !is_glob) || (!rhs && fetch))
557 goto invalid;
558 is_glob = 1;
7d19da46
JH
559 } else if (rhs && is_glob) {
560 goto invalid;
ef00d150 561 }
7d19da46 562
46220ca1
JH
563 rs[i].pattern = is_glob;
564 rs[i].src = xstrndup(lhs, llen);
8d9c5010 565 flags = REFNAME_ALLOW_ONELEVEL | (is_glob ? REFNAME_REFSPEC_PATTERN : 0);
46220ca1
JH
566
567 if (fetch) {
6e7b66ee
JH
568 unsigned char unused[40];
569
def24991 570 /* LHS */
46220ca1 571 if (!*rs[i].src)
def24991 572 ; /* empty is ok; it means "HEAD" */
6e7b66ee
JH
573 else if (llen == 40 && !get_sha1_hex(rs[i].src, unused))
574 rs[i].exact_sha1 = 1; /* ok */
def24991
JH
575 else if (!check_refname_format(rs[i].src, flags))
576 ; /* valid looking ref is ok */
577 else
8d9c5010 578 goto invalid;
def24991 579 /* RHS */
8d9c5010 580 if (!rs[i].dst)
def24991 581 ; /* missing is ok; it is the same as empty */
8d9c5010 582 else if (!*rs[i].dst)
def24991
JH
583 ; /* empty is ok; it means "do not store" */
584 else if (!check_refname_format(rs[i].dst, flags))
585 ; /* valid looking ref is ok */
586 else
8d9c5010 587 goto invalid;
46220ca1
JH
588 } else {
589 /*
590 * LHS
591 * - empty is allowed; it means delete.
592 * - when wildcarded, it must be a valid looking ref.
593 * - otherwise, it must be an extended SHA-1, but
594 * there is no existing way to validate this.
595 */
596 if (!*rs[i].src)
597 ; /* empty is ok */
598 else if (is_glob) {
8d9c5010 599 if (check_refname_format(rs[i].src, flags))
46220ca1
JH
600 goto invalid;
601 }
602 else
603 ; /* anything goes, for now */
604 /*
605 * RHS
606 * - missing is allowed, but LHS then must be a
607 * valid looking ref.
608 * - empty is not allowed.
609 * - otherwise it must be a valid looking ref.
610 */
611 if (!rs[i].dst) {
8d9c5010 612 if (check_refname_format(rs[i].src, flags))
46220ca1
JH
613 goto invalid;
614 } else if (!*rs[i].dst) {
615 goto invalid;
616 } else {
8d9c5010 617 if (check_refname_format(rs[i].dst, flags))
46220ca1
JH
618 goto invalid;
619 }
ef00d150 620 }
6b62816c
DB
621 }
622 return rs;
46220ca1
JH
623
624 invalid:
24b6177e 625 if (verify) {
2cb1f36d
BC
626 /*
627 * nr_refspec must be greater than zero and i must be valid
628 * since it is only possible to reach this point from within
629 * the for loop above.
630 */
631 free_refspecs(rs, i+1);
24b6177e
JF
632 return NULL;
633 }
46220ca1
JH
634 die("Invalid refspec '%s'", refspec[i]);
635}
636
24b6177e
JF
637int valid_fetch_refspec(const char *fetch_refspec_str)
638{
24b6177e
JF
639 struct refspec *refspec;
640
66dbfd55 641 refspec = parse_refspec_internal(1, &fetch_refspec_str, 1, 1);
2cb1f36d 642 free_refspecs(refspec, 1);
24b6177e
JF
643 return !!refspec;
644}
645
46220ca1
JH
646struct refspec *parse_fetch_refspec(int nr_refspec, const char **refspec)
647{
24b6177e 648 return parse_refspec_internal(nr_refspec, refspec, 1, 0);
46220ca1
JH
649}
650
697d7f5d 651static struct refspec *parse_push_refspec(int nr_refspec, const char **refspec)
46220ca1 652{
24b6177e 653 return parse_refspec_internal(nr_refspec, refspec, 0, 0);
6b62816c
DB
654}
655
72ff8943
DB
656void free_refspec(int nr_refspec, struct refspec *refspec)
657{
658 int i;
659 for (i = 0; i < nr_refspec; i++) {
660 free(refspec[i].src);
661 free(refspec[i].dst);
662 }
663 free(refspec);
664}
665
df93e33c
DB
666static int valid_remote_nick(const char *name)
667{
8ca12c0d 668 if (!name[0] || is_dot_or_dotdot(name))
df93e33c
DB
669 return 0;
670 return !strchr(name, '/'); /* no slash */
671}
672
5751f490
DB
673struct remote *remote_get(const char *name)
674{
675 struct remote *ret;
fa685bdf 676 int name_given = 0;
5751f490
DB
677
678 read_config();
fa685bdf
DB
679 if (name)
680 name_given = 1;
681 else {
5751f490 682 name = default_remote_name;
fa685bdf
DB
683 name_given = explicit_default_remote_name;
684 }
9326d494 685
5751f490 686 ret = make_remote(name, 0);
df93e33c 687 if (valid_remote_nick(name)) {
0a4da29d 688 if (!valid_remote(ret))
5751f490 689 read_remotes_file(ret);
0a4da29d 690 if (!valid_remote(ret))
5751f490
DB
691 read_branches_file(ret);
692 }
0a4da29d 693 if (name_given && !valid_remote(ret))
55029ae4 694 add_url_alias(ret, name);
0a4da29d 695 if (!valid_remote(ret))
5751f490 696 return NULL;
46220ca1
JH
697 ret->fetch = parse_fetch_refspec(ret->fetch_refspec_nr, ret->fetch_refspec);
698 ret->push = parse_push_refspec(ret->push_refspec_nr, ret->push_refspec);
5751f490
DB
699 return ret;
700}
6b62816c 701
9a23ba33
FAG
702int remote_is_configured(const char *name)
703{
704 int i;
705 read_config();
706
707 for (i = 0; i < remotes_nr; i++)
708 if (!strcmp(name, remotes[i]->name))
709 return 1;
710 return 0;
711}
712
b42f6927
JS
713int for_each_remote(each_remote_fn fn, void *priv)
714{
715 int i, result = 0;
716 read_config();
2d31347b 717 for (i = 0; i < remotes_nr && !result; i++) {
b42f6927
JS
718 struct remote *r = remotes[i];
719 if (!r)
720 continue;
721 if (!r->fetch)
46220ca1
JH
722 r->fetch = parse_fetch_refspec(r->fetch_refspec_nr,
723 r->fetch_refspec);
b42f6927 724 if (!r->push)
46220ca1
JH
725 r->push = parse_push_refspec(r->push_refspec_nr,
726 r->push_refspec);
b42f6927
JS
727 result = fn(r, priv);
728 }
729 return result;
730}
731
2467a4fa
DB
732void ref_remove_duplicates(struct ref *ref_map)
733{
183113a5 734 struct string_list refs = STRING_LIST_INIT_NODUP;
73cf0822
JP
735 struct string_list_item *item = NULL;
736 struct ref *prev = NULL, *next = NULL;
737 for (; ref_map; prev = ref_map, ref_map = next) {
738 next = ref_map->next;
2467a4fa
DB
739 if (!ref_map->peer_ref)
740 continue;
73cf0822 741
e8c8b713 742 item = string_list_lookup(&refs, ref_map->peer_ref->name);
73cf0822
JP
743 if (item) {
744 if (strcmp(((struct ref *)item->util)->name,
745 ref_map->name))
746 die("%s tracks both %s and %s",
747 ref_map->peer_ref->name,
748 ((struct ref *)item->util)->name,
749 ref_map->name);
750 prev->next = ref_map->next;
751 free(ref_map->peer_ref);
752 free(ref_map);
95c96d48
JP
753 ref_map = prev; /* skip this; we freed it */
754 continue;
2467a4fa 755 }
73cf0822 756
78a395d3 757 item = string_list_insert(&refs, ref_map->peer_ref->name);
73cf0822 758 item->util = ref_map;
2467a4fa 759 }
73cf0822 760 string_list_clear(&refs, 0);
2467a4fa
DB
761}
762
28b91f8a 763int remote_has_url(struct remote *remote, const char *url)
5d46c9d4
DB
764{
765 int i;
28b91f8a
SP
766 for (i = 0; i < remote->url_nr; i++) {
767 if (!strcmp(remote->url[i], url))
5d46c9d4
DB
768 return 1;
769 }
770 return 0;
771}
772
e928213f
DB
773static int match_name_with_pattern(const char *key, const char *name,
774 const char *value, char **result)
a3c84239 775{
08fbdb30
DB
776 const char *kstar = strchr(key, '*');
777 size_t klen;
abd2bde7
DB
778 size_t ksuffixlen;
779 size_t namelen;
08fbdb30
DB
780 int ret;
781 if (!kstar)
782 die("Key '%s' of pattern had no '*'", key);
783 klen = kstar - key;
abd2bde7
DB
784 ksuffixlen = strlen(kstar + 1);
785 namelen = strlen(name);
786 ret = !strncmp(name, key, klen) && namelen >= klen + ksuffixlen &&
787 !memcmp(name + namelen - ksuffixlen, kstar + 1, ksuffixlen);
e928213f 788 if (ret && value) {
08fbdb30
DB
789 const char *vstar = strchr(value, '*');
790 size_t vlen;
abd2bde7 791 size_t vsuffixlen;
08fbdb30
DB
792 if (!vstar)
793 die("Value '%s' of pattern has no '*'", value);
794 vlen = vstar - value;
abd2bde7
DB
795 vsuffixlen = strlen(vstar + 1);
796 *result = xmalloc(vlen + vsuffixlen +
e928213f 797 strlen(name) -
abd2bde7
DB
798 klen - ksuffixlen + 1);
799 strncpy(*result, value, vlen);
800 strncpy(*result + vlen,
801 name + klen, namelen - klen - ksuffixlen);
802 strcpy(*result + vlen + namelen - klen - ksuffixlen,
803 vstar + 1);
e928213f 804 }
a3c84239
DB
805 return ret;
806}
807
c500352e 808static int query_refspecs(struct refspec *refs, int ref_count, struct refspec *query)
72ff8943
DB
809{
810 int i;
c500352e 811 int find_src = !query->src;
72ff8943 812
c500352e
CMN
813 if (find_src && !query->dst)
814 return error("query_refspecs: need either src or dst");
b42f6927 815
c500352e
CMN
816 for (i = 0; i < ref_count; i++) {
817 struct refspec *refspec = &refs[i];
818 const char *key = find_src ? refspec->dst : refspec->src;
819 const char *value = find_src ? refspec->src : refspec->dst;
820 const char *needle = find_src ? query->dst : query->src;
821 char **result = find_src ? &query->src : &query->dst;
b42f6927 822
c500352e 823 if (!refspec->dst)
5d46c9d4 824 continue;
c500352e 825 if (refspec->pattern) {
e928213f 826 if (match_name_with_pattern(key, needle, value, result)) {
c500352e 827 query->force = refspec->force;
5d46c9d4
DB
828 return 0;
829 }
b42f6927
JS
830 } else if (!strcmp(needle, key)) {
831 *result = xstrdup(value);
c500352e 832 query->force = refspec->force;
b42f6927 833 return 0;
5d46c9d4
DB
834 }
835 }
5d46c9d4
DB
836 return -1;
837}
838
c500352e
CMN
839char *apply_refspecs(struct refspec *refspecs, int nr_refspec,
840 const char *name)
841{
842 struct refspec query;
843
844 memset(&query, 0, sizeof(struct refspec));
845 query.src = (char *)name;
846
847 if (query_refspecs(refspecs, nr_refspec, &query))
848 return NULL;
849
850 return query.dst;
851}
852
853int remote_find_tracking(struct remote *remote, struct refspec *refspec)
854{
855 return query_refspecs(remote->fetch, remote->fetch_refspec_nr, refspec);
856}
857
8009768e
RS
858static struct ref *alloc_ref_with_prefix(const char *prefix, size_t prefixlen,
859 const char *name)
860{
861 size_t len = strlen(name);
862 struct ref *ref = xcalloc(1, sizeof(struct ref) + prefixlen + len + 1);
863 memcpy(ref->name, prefix, prefixlen);
864 memcpy(ref->name + prefixlen, name, len);
865 return ref;
866}
867
59c69c0c 868struct ref *alloc_ref(const char *name)
dfd255dd 869{
59c69c0c 870 return alloc_ref_with_prefix("", 0, name);
737922aa
KK
871}
872
59a57757 873struct ref *copy_ref(const struct ref *ref)
d71ab174 874{
7b3db095
JS
875 struct ref *cpy;
876 size_t len;
877 if (!ref)
878 return NULL;
879 len = strlen(ref->name);
880 cpy = xmalloc(sizeof(struct ref) + len + 1);
881 memcpy(cpy, ref, sizeof(struct ref) + len + 1);
882 cpy->next = NULL;
883 cpy->symref = ref->symref ? xstrdup(ref->symref) : NULL;
884 cpy->remote_status = ref->remote_status ? xstrdup(ref->remote_status) : NULL;
885 cpy->peer_ref = copy_ref(ref->peer_ref);
886 return cpy;
d71ab174
DB
887}
888
4577370e
DB
889struct ref *copy_ref_list(const struct ref *ref)
890{
891 struct ref *ret = NULL;
892 struct ref **tail = &ret;
893 while (ref) {
894 *tail = copy_ref(ref);
895 ref = ref->next;
896 tail = &((*tail)->next);
897 }
898 return ret;
899}
900
697d7f5d 901static void free_ref(struct ref *ref)
be885d96
DB
902{
903 if (!ref)
904 return;
7b3db095 905 free_ref(ref->peer_ref);
be885d96
DB
906 free(ref->remote_status);
907 free(ref->symref);
908 free(ref);
909}
910
dfd255dd
DB
911void free_refs(struct ref *ref)
912{
913 struct ref *next;
914 while (ref) {
915 next = ref->next;
be885d96 916 free_ref(ref);
dfd255dd
DB
917 ref = next;
918 }
919}
920
ed81c76b
JK
921int ref_compare_name(const void *va, const void *vb)
922{
923 const struct ref *a = va, *b = vb;
924 return strcmp(a->name, b->name);
925}
926
927static void *ref_list_get_next(const void *a)
928{
929 return ((const struct ref *)a)->next;
930}
931
932static void ref_list_set_next(void *a, void *next)
933{
934 ((struct ref *)a)->next = next;
935}
936
937void sort_ref_list(struct ref **l, int (*cmp)(const void *, const void *))
938{
939 *l = llist_mergesort(*l, ref_list_get_next, ref_list_set_next, cmp);
940}
941
6b62816c
DB
942static int count_refspec_match(const char *pattern,
943 struct ref *refs,
944 struct ref **matched_ref)
945{
946 int patlen = strlen(pattern);
947 struct ref *matched_weak = NULL;
948 struct ref *matched = NULL;
949 int weak_match = 0;
950 int match = 0;
951
952 for (weak_match = match = 0; refs; refs = refs->next) {
953 char *name = refs->name;
954 int namelen = strlen(name);
6b62816c 955
ae36bdcf 956 if (!refname_match(pattern, name, ref_rev_parse_rules))
6b62816c
DB
957 continue;
958
959 /* A match is "weak" if it is with refs outside
960 * heads or tags, and did not specify the pattern
961 * in full (e.g. "refs/remotes/origin/master") or at
962 * least from the toplevel (e.g. "remotes/origin/master");
963 * otherwise "git push $URL master" would result in
964 * ambiguity between remotes/origin/master and heads/master
965 * at the remote site.
966 */
967 if (namelen != patlen &&
968 patlen != namelen - 5 &&
969 prefixcmp(name, "refs/heads/") &&
970 prefixcmp(name, "refs/tags/")) {
971 /* We want to catch the case where only weak
972 * matches are found and there are multiple
973 * matches, and where more than one strong
974 * matches are found, as ambiguous. One
975 * strong match with zero or more weak matches
976 * are acceptable as a unique match.
977 */
978 matched_weak = refs;
979 weak_match++;
980 }
981 else {
982 matched = refs;
983 match++;
984 }
985 }
986 if (!matched) {
987 *matched_ref = matched_weak;
988 return weak_match;
989 }
990 else {
991 *matched_ref = matched;
992 return match;
993 }
994}
995
1d735267 996static void tail_link_ref(struct ref *ref, struct ref ***tail)
6b62816c
DB
997{
998 **tail = ref;
1d735267
DB
999 while (ref->next)
1000 ref = ref->next;
6b62816c 1001 *tail = &ref->next;
6b62816c
DB
1002}
1003
67655246
FC
1004static struct ref *alloc_delete_ref(void)
1005{
1006 struct ref *ref = alloc_ref("(delete)");
1007 hashclr(ref->new_sha1);
1008 return ref;
1009}
1010
6b62816c
DB
1011static struct ref *try_explicit_object_name(const char *name)
1012{
1013 unsigned char sha1[20];
1014 struct ref *ref;
6b62816c 1015
67655246
FC
1016 if (!*name)
1017 return alloc_delete_ref();
6b62816c
DB
1018 if (get_sha1(name, sha1))
1019 return NULL;
59c69c0c 1020 ref = alloc_ref(name);
6b62816c
DB
1021 hashcpy(ref->new_sha1, sha1);
1022 return ref;
1023}
1024
1d735267 1025static struct ref *make_linked_ref(const char *name, struct ref ***tail)
6b62816c 1026{
59c69c0c 1027 struct ref *ret = alloc_ref(name);
1d735267
DB
1028 tail_link_ref(ret, tail);
1029 return ret;
163f0ee5 1030}
8558fd9e 1031
f8aae120
JK
1032static char *guess_ref(const char *name, struct ref *peer)
1033{
1034 struct strbuf buf = STRBUF_INIT;
1035 unsigned char sha1[20];
1036
8cad4744 1037 const char *r = resolve_ref_unsafe(peer->name, sha1, 1, NULL);
f8aae120
JK
1038 if (!r)
1039 return NULL;
1040
1041 if (!prefixcmp(r, "refs/heads/"))
1042 strbuf_addstr(&buf, "refs/heads/");
1043 else if (!prefixcmp(r, "refs/tags/"))
1044 strbuf_addstr(&buf, "refs/tags/");
1045 else
1046 return NULL;
1047
1048 strbuf_addstr(&buf, name);
1049 return strbuf_detach(&buf, NULL);
1050}
1051
54a8ad92
JH
1052static int match_explicit(struct ref *src, struct ref *dst,
1053 struct ref ***dst_tail,
9a7bbd1d 1054 struct refspec *rs)
6b62816c 1055{
54a8ad92 1056 struct ref *matched_src, *matched_dst;
cdf690e5 1057 int copy_src;
8558fd9e 1058
54a8ad92 1059 const char *dst_value = rs->dst;
f8aae120 1060 char *dst_guess;
6b62816c 1061
a83619d6 1062 if (rs->pattern || rs->matching)
9a7bbd1d 1063 return 0;
8558fd9e 1064
54a8ad92
JH
1065 matched_src = matched_dst = NULL;
1066 switch (count_refspec_match(rs->src, src, &matched_src)) {
1067 case 1:
cdf690e5 1068 copy_src = 1;
54a8ad92
JH
1069 break;
1070 case 0:
1071 /* The source could be in the get_sha1() format
1072 * not a reference name. :refs/other is a
1073 * way to delete 'other' ref at the remote end.
1074 */
1075 matched_src = try_explicit_object_name(rs->src);
7dfee372 1076 if (!matched_src)
9a7bbd1d 1077 return error("src refspec %s does not match any.", rs->src);
cdf690e5 1078 copy_src = 0;
54a8ad92
JH
1079 break;
1080 default:
9a7bbd1d 1081 return error("src refspec %s matches more than one.", rs->src);
54a8ad92 1082 }
3c8b7df1 1083
4491e62a 1084 if (!dst_value) {
9f0ea7e8
DB
1085 unsigned char sha1[20];
1086 int flag;
1087
8cad4744 1088 dst_value = resolve_ref_unsafe(matched_src->name, sha1, 1, &flag);
9f0ea7e8
DB
1089 if (!dst_value ||
1090 ((flag & REF_ISSYMREF) &&
1091 prefixcmp(dst_value, "refs/heads/")))
1092 die("%s cannot be resolved to branch.",
1093 matched_src->name);
4491e62a 1094 }
3c8b7df1 1095
54a8ad92
JH
1096 switch (count_refspec_match(dst_value, dst, &matched_dst)) {
1097 case 1:
1098 break;
1099 case 0:
163f0ee5 1100 if (!memcmp(dst_value, "refs/", 5))
1d735267 1101 matched_dst = make_linked_ref(dst_value, dst_tail);
5742c82b
JK
1102 else if (is_null_sha1(matched_src->new_sha1))
1103 error("unable to delete '%s': remote ref does not exist",
1104 dst_value);
eeefa7c9 1105 else if ((dst_guess = guess_ref(dst_value, matched_src)))
f8aae120 1106 matched_dst = make_linked_ref(dst_guess, dst_tail);
3c8b7df1 1107 else
f8aae120
JK
1108 error("unable to push to unqualified destination: %s\n"
1109 "The destination refspec neither matches an "
1110 "existing ref on the remote nor\n"
1111 "begins with refs/, and we are unable to "
1112 "guess a prefix based on the source ref.",
1113 dst_value);
54a8ad92
JH
1114 break;
1115 default:
3c8b7df1 1116 matched_dst = NULL;
54a8ad92
JH
1117 error("dst refspec %s matches more than one.",
1118 dst_value);
1119 break;
1120 }
9a7bbd1d
JK
1121 if (!matched_dst)
1122 return -1;
1123 if (matched_dst->peer_ref)
1124 return error("dst ref %s receives from more than one src.",
54a8ad92 1125 matched_dst->name);
54a8ad92 1126 else {
cdf690e5 1127 matched_dst->peer_ref = copy_src ? copy_ref(matched_src) : matched_src;
54a8ad92 1128 matched_dst->force = rs->force;
6b62816c 1129 }
9a7bbd1d 1130 return 0;
54a8ad92
JH
1131}
1132
1133static int match_explicit_refs(struct ref *src, struct ref *dst,
1134 struct ref ***dst_tail, struct refspec *rs,
1135 int rs_nr)
1136{
1137 int i, errs;
1138 for (i = errs = 0; i < rs_nr; i++)
9a7bbd1d
JK
1139 errs += match_explicit(src, dst, dst_tail, &rs[i]);
1140 return errs;
6b62816c
DB
1141}
1142
db70a04c 1143static char *get_ref_match(const struct refspec *rs, int rs_nr, const struct ref *ref,
6ddba5e2 1144 int send_mirror, int direction, const struct refspec **ret_pat)
8558fd9e 1145{
db70a04c
FC
1146 const struct refspec *pat;
1147 char *name;
8558fd9e 1148 int i;
a83619d6 1149 int matching_refs = -1;
8558fd9e 1150 for (i = 0; i < rs_nr; i++) {
a83619d6
PB
1151 if (rs[i].matching &&
1152 (matching_refs == -1 || rs[i].force)) {
1153 matching_refs = i;
1154 continue;
1155 }
1156
db70a04c
FC
1157 if (rs[i].pattern) {
1158 const char *dst_side = rs[i].dst ? rs[i].dst : rs[i].src;
6ddba5e2
FC
1159 int match;
1160 if (direction == FROM_SRC)
1161 match = match_name_with_pattern(rs[i].src, ref->name, dst_side, &name);
1162 else
1163 match = match_name_with_pattern(dst_side, ref->name, rs[i].src, &name);
1164 if (match) {
db70a04c
FC
1165 matching_refs = i;
1166 break;
1167 }
1168 }
8558fd9e 1169 }
db70a04c 1170 if (matching_refs == -1)
a83619d6 1171 return NULL;
db70a04c
FC
1172
1173 pat = rs + matching_refs;
1174 if (pat->matching) {
1175 /*
1176 * "matching refs"; traditionally we pushed everything
1177 * including refs outside refs/heads/ hierarchy, but
1178 * that does not make much sense these days.
1179 */
1180 if (!send_mirror && prefixcmp(ref->name, "refs/heads/"))
1181 return NULL;
1182 name = xstrdup(ref->name);
1183 }
1184 if (ret_pat)
1185 *ret_pat = pat;
1186 return name;
8558fd9e
DB
1187}
1188
6d2bf96e
CB
1189static struct ref **tail_ref(struct ref **head)
1190{
1191 struct ref **tail = head;
1192 while (*tail)
1193 tail = &((*tail)->next);
1194 return tail;
1195}
1196
c2aba155
JH
1197struct tips {
1198 struct commit **tip;
1199 int nr, alloc;
1200};
1201
1202static void add_to_tips(struct tips *tips, const unsigned char *sha1)
1203{
1204 struct commit *commit;
1205
1206 if (is_null_sha1(sha1))
1207 return;
1208 commit = lookup_commit_reference_gently(sha1, 1);
1209 if (!commit || (commit->object.flags & TMP_MARK))
1210 return;
1211 commit->object.flags |= TMP_MARK;
1212 ALLOC_GROW(tips->tip, tips->nr + 1, tips->alloc);
1213 tips->tip[tips->nr++] = commit;
1214}
1215
1216static void add_missing_tags(struct ref *src, struct ref **dst, struct ref ***dst_tail)
1217{
1218 struct string_list dst_tag = STRING_LIST_INIT_NODUP;
1219 struct string_list src_tag = STRING_LIST_INIT_NODUP;
1220 struct string_list_item *item;
1221 struct ref *ref;
1222 struct tips sent_tips;
1223
1224 /*
1225 * Collect everything we know they would have at the end of
1226 * this push, and collect all tags they have.
1227 */
1228 memset(&sent_tips, 0, sizeof(sent_tips));
1229 for (ref = *dst; ref; ref = ref->next) {
1230 if (ref->peer_ref &&
1231 !is_null_sha1(ref->peer_ref->new_sha1))
1232 add_to_tips(&sent_tips, ref->peer_ref->new_sha1);
1233 else
1234 add_to_tips(&sent_tips, ref->old_sha1);
1235 if (!prefixcmp(ref->name, "refs/tags/"))
1236 string_list_append(&dst_tag, ref->name);
1237 }
1238 clear_commit_marks_many(sent_tips.nr, sent_tips.tip, TMP_MARK);
1239
1240 sort_string_list(&dst_tag);
1241
1242 /* Collect tags they do not have. */
1243 for (ref = src; ref; ref = ref->next) {
1244 if (prefixcmp(ref->name, "refs/tags/"))
1245 continue; /* not a tag */
1246 if (string_list_has_string(&dst_tag, ref->name))
1247 continue; /* they already have it */
1248 if (sha1_object_info(ref->new_sha1, NULL) != OBJ_TAG)
1249 continue; /* be conservative */
1250 item = string_list_append(&src_tag, ref->name);
1251 item->util = ref;
1252 }
1253 string_list_clear(&dst_tag, 0);
1254
1255 /*
1256 * At this point, src_tag lists tags that are missing from
1257 * dst, and sent_tips lists the tips we are pushing or those
1258 * that we know they already have. An element in the src_tag
1259 * that is an ancestor of any of the sent_tips needs to be
1260 * sent to the other side.
1261 */
1262 if (sent_tips.nr) {
1263 for_each_string_list_item(item, &src_tag) {
1264 struct ref *ref = item->util;
1265 struct ref *dst_ref;
1266 struct commit *commit;
1267
1268 if (is_null_sha1(ref->new_sha1))
1269 continue;
1270 commit = lookup_commit_reference_gently(ref->new_sha1, 1);
1271 if (!commit)
1272 /* not pushing a commit, which is not an error */
1273 continue;
1274
1275 /*
1276 * Is this tag, which they do not have, reachable from
1277 * any of the commits we are sending?
1278 */
1279 if (!in_merge_bases_many(commit, sent_tips.nr, sent_tips.tip))
1280 continue;
1281
1282 /* Add it in */
1283 dst_ref = make_linked_ref(ref->name, dst_tail);
1284 hashcpy(dst_ref->new_sha1, ref->new_sha1);
1285 dst_ref->peer_ref = copy_ref(ref);
1286 }
1287 }
1288 string_list_clear(&src_tag, 0);
1289 free(sent_tips.tip);
1290}
1291
54a8ad92 1292/*
29753cdd
JH
1293 * Given the set of refs the local repository has, the set of refs the
1294 * remote repository has, and the refspec used for push, determine
1295 * what remote refs we will update and with what value by setting
1296 * peer_ref (which object is being pushed) and force (if the push is
1297 * forced) in elements of "dst". The function may add new elements to
1298 * dst (e.g. pushing to a new branch, done in match_explicit_refs).
54a8ad92 1299 */
29753cdd
JH
1300int match_push_refs(struct ref *src, struct ref **dst,
1301 int nr_refspec, const char **refspec, int flags)
6b62816c 1302{
a83619d6 1303 struct refspec *rs;
28b9d6e5
AW
1304 int send_all = flags & MATCH_REFS_ALL;
1305 int send_mirror = flags & MATCH_REFS_MIRROR;
6ddba5e2 1306 int send_prune = flags & MATCH_REFS_PRUNE;
5f48cb95 1307 int errs;
2af202be 1308 static const char *default_refspec[] = { ":", NULL };
b1d8b1f3 1309 struct ref *ref, **dst_tail = tail_ref(dst);
6b62816c 1310
a83619d6
PB
1311 if (!nr_refspec) {
1312 nr_refspec = 1;
1313 refspec = default_refspec;
1314 }
1315 rs = parse_push_refspec(nr_refspec, (const char **) refspec);
6d2bf96e 1316 errs = match_explicit_refs(src, *dst, &dst_tail, rs, nr_refspec);
6b62816c
DB
1317
1318 /* pick the remainder */
b1d8b1f3 1319 for (ref = src; ref; ref = ref->next) {
6b62816c 1320 struct ref *dst_peer;
6e66bf3c
AR
1321 const struct refspec *pat = NULL;
1322 char *dst_name;
db70a04c 1323
6ddba5e2 1324 dst_name = get_ref_match(rs, nr_refspec, ref, send_mirror, FROM_SRC, &pat);
db70a04c 1325 if (!dst_name)
a83619d6
PB
1326 continue;
1327
6d2bf96e 1328 dst_peer = find_ref_by_name(*dst, dst_name);
a83619d6
PB
1329 if (dst_peer) {
1330 if (dst_peer->peer_ref)
1331 /* We're already sending something to this ref. */
1332 goto free_name;
a83619d6
PB
1333 } else {
1334 if (pat->matching && !(send_all || send_mirror))
1335 /*
1336 * Remote doesn't have it, and we have no
1337 * explicit pattern, and we don't have
1338 * --all nor --mirror.
1339 */
1340 goto free_name;
28b9d6e5 1341
6b62816c 1342 /* Create a new one and link it */
6d2bf96e 1343 dst_peer = make_linked_ref(dst_name, &dst_tail);
b1d8b1f3 1344 hashcpy(dst_peer->new_sha1, ref->new_sha1);
6b62816c 1345 }
b1d8b1f3 1346 dst_peer->peer_ref = copy_ref(ref);
a83619d6 1347 dst_peer->force = pat->force;
6e66bf3c
AR
1348 free_name:
1349 free(dst_name);
6b62816c 1350 }
c2aba155
JH
1351
1352 if (flags & MATCH_REFS_FOLLOW_TAGS)
1353 add_missing_tags(src, dst, &dst_tail);
1354
6ddba5e2
FC
1355 if (send_prune) {
1356 /* check for missing refs on the remote */
1357 for (ref = *dst; ref; ref = ref->next) {
1358 char *src_name;
1359
1360 if (ref->peer_ref)
1361 /* We're already sending something to this ref. */
1362 continue;
1363
1364 src_name = get_ref_match(rs, nr_refspec, ref, send_mirror, FROM_DST, NULL);
1365 if (src_name) {
1366 if (!find_ref_by_name(src, src_name))
1367 ref->peer_ref = alloc_delete_ref();
1368 free(src_name);
1369 }
1370 }
1371 }
5f48cb95
JS
1372 if (errs)
1373 return -1;
6b62816c
DB
1374 return 0;
1375}
cf818348 1376
20e8b465
TRC
1377void set_ref_status_for_push(struct ref *remote_refs, int send_mirror,
1378 int force_update)
1379{
1380 struct ref *ref;
1381
1382 for (ref = remote_refs; ref; ref = ref->next) {
8c5f6f71
CR
1383 int force_ref_update = ref->force || force_update;
1384
20e8b465
TRC
1385 if (ref->peer_ref)
1386 hashcpy(ref->new_sha1, ref->peer_ref->new_sha1);
1387 else if (!send_mirror)
1388 continue;
1389
1390 ref->deletion = is_null_sha1(ref->new_sha1);
1391 if (!ref->deletion &&
1392 !hashcmp(ref->old_sha1, ref->new_sha1)) {
1393 ref->status = REF_STATUS_UPTODATE;
1394 continue;
1395 }
1396
a272b289 1397 /*
256b9d70
JH
1398 * Decide whether an individual refspec A:B can be
1399 * pushed. The push will succeed if any of the
1400 * following are true:
20e8b465 1401 *
a272b289 1402 * (1) the remote reference B does not exist
20e8b465 1403 *
a272b289
CR
1404 * (2) the remote reference B is being removed (i.e.,
1405 * pushing :B where no source is specified)
20e8b465 1406 *
256b9d70
JH
1407 * (3) the destination is not under refs/tags/, and
1408 * if the old and new value is a commit, the new
1409 * is a descendant of the old.
20e8b465 1410 *
a272b289
CR
1411 * (4) it is forced using the +A:B notation, or by
1412 * passing the --force argument
20e8b465
TRC
1413 */
1414
5ece083f 1415 if (!ref->deletion && !is_null_sha1(ref->old_sha1)) {
0f4d498d
JH
1416 int why = 0; /* why would this push require --force? */
1417
1418 if (!prefixcmp(ref->name, "refs/tags/"))
1419 why = REF_STATUS_REJECT_ALREADY_EXISTS;
75e5c0dc
JH
1420 else if (!has_sha1_file(ref->old_sha1))
1421 why = REF_STATUS_REJECT_FETCH_FIRST;
1422 else if (!lookup_commit_reference_gently(ref->old_sha1, 1) ||
1423 !lookup_commit_reference_gently(ref->new_sha1, 1))
1424 why = REF_STATUS_REJECT_NEEDS_FORCE;
1425 else if (!ref_newer(ref->new_sha1, ref->old_sha1))
0f4d498d
JH
1426 why = REF_STATUS_REJECT_NONFASTFORWARD;
1427
1428 if (!force_ref_update)
1429 ref->status = why;
1430 else if (why)
5ece083f 1431 ref->forced_update = 1;
20e8b465
TRC
1432 }
1433 }
1434}
1435
cf818348
DB
1436struct branch *branch_get(const char *name)
1437{
1438 struct branch *ret;
1439
1440 read_config();
1441 if (!name || !*name || !strcmp(name, "HEAD"))
1442 ret = current_branch;
1443 else
1444 ret = make_branch(name, 0);
1445 if (ret && ret->remote_name) {
1446 ret->remote = remote_get(ret->remote_name);
1447 if (ret->merge_nr) {
1448 int i;
1449 ret->merge = xcalloc(sizeof(*ret->merge),
1450 ret->merge_nr);
1451 for (i = 0; i < ret->merge_nr; i++) {
1452 ret->merge[i] = xcalloc(1, sizeof(**ret->merge));
1453 ret->merge[i]->src = xstrdup(ret->merge_name[i]);
5e6e2b48
MG
1454 if (remote_find_tracking(ret->remote, ret->merge[i])
1455 && !strcmp(ret->remote_name, "."))
1456 ret->merge[i]->dst = xstrdup(ret->merge_name[i]);
cf818348
DB
1457 }
1458 }
1459 }
1460 return ret;
1461}
1462
1463int branch_has_merge_config(struct branch *branch)
1464{
1465 return branch && !!branch->merge;
1466}
1467
85682c19
SP
1468int branch_merge_matches(struct branch *branch,
1469 int i,
1470 const char *refname)
cf818348 1471{
85682c19 1472 if (!branch || i < 0 || i >= branch->merge_nr)
cf818348 1473 return 0;
605b4978 1474 return refname_match(branch->merge[i]->src, refname, ref_fetch_rules);
cf818348 1475}
d71ab174 1476
f8fb971e
JH
1477static int ignore_symref_update(const char *refname)
1478{
1479 unsigned char sha1[20];
1480 int flag;
1481
1482 if (!resolve_ref_unsafe(refname, sha1, 0, &flag))
1483 return 0; /* non-existing refs are OK */
1484 return (flag & REF_ISSYMREF);
1485}
1486
4577370e 1487static struct ref *get_expanded_map(const struct ref *remote_refs,
d71ab174
DB
1488 const struct refspec *refspec)
1489{
4577370e 1490 const struct ref *ref;
d71ab174
DB
1491 struct ref *ret = NULL;
1492 struct ref **tail = &ret;
1493
e928213f 1494 char *expn_name;
d71ab174
DB
1495
1496 for (ref = remote_refs; ref; ref = ref->next) {
1497 if (strchr(ref->name, '^'))
1498 continue; /* a dereference item */
e928213f 1499 if (match_name_with_pattern(refspec->src, ref->name,
f8fb971e
JH
1500 refspec->dst, &expn_name) &&
1501 !ignore_symref_update(expn_name)) {
d71ab174 1502 struct ref *cpy = copy_ref(ref);
d71ab174 1503
e928213f
DB
1504 cpy->peer_ref = alloc_ref(expn_name);
1505 free(expn_name);
d71ab174
DB
1506 if (refspec->force)
1507 cpy->peer_ref->force = 1;
1508 *tail = cpy;
1509 tail = &cpy->next;
1510 }
1511 }
1512
1513 return ret;
1514}
1515
4577370e 1516static const struct ref *find_ref_by_name_abbrev(const struct ref *refs, const char *name)
d71ab174 1517{
4577370e 1518 const struct ref *ref;
d71ab174 1519 for (ref = refs; ref; ref = ref->next) {
605b4978 1520 if (refname_match(name, ref->name, ref_fetch_rules))
d71ab174
DB
1521 return ref;
1522 }
1523 return NULL;
1524}
1525
4577370e 1526struct ref *get_remote_ref(const struct ref *remote_refs, const char *name)
d71ab174 1527{
4577370e 1528 const struct ref *ref = find_ref_by_name_abbrev(remote_refs, name);
d71ab174
DB
1529
1530 if (!ref)
9ad7c5ae 1531 return NULL;
d71ab174
DB
1532
1533 return copy_ref(ref);
1534}
1535
1536static struct ref *get_local_ref(const char *name)
1537{
3eb96997 1538 if (!name || name[0] == '\0')
d71ab174
DB
1539 return NULL;
1540
59c69c0c
RS
1541 if (!prefixcmp(name, "refs/"))
1542 return alloc_ref(name);
d71ab174
DB
1543
1544 if (!prefixcmp(name, "heads/") ||
1545 !prefixcmp(name, "tags/") ||
8009768e
RS
1546 !prefixcmp(name, "remotes/"))
1547 return alloc_ref_with_prefix("refs/", 5, name);
d71ab174 1548
8009768e 1549 return alloc_ref_with_prefix("refs/heads/", 11, name);
d71ab174
DB
1550}
1551
4577370e 1552int get_fetch_map(const struct ref *remote_refs,
d71ab174 1553 const struct refspec *refspec,
9ad7c5ae
JH
1554 struct ref ***tail,
1555 int missing_ok)
d71ab174 1556{
ef00d150 1557 struct ref *ref_map, **rmp;
d71ab174
DB
1558
1559 if (refspec->pattern) {
1560 ref_map = get_expanded_map(remote_refs, refspec);
1561 } else {
9ad7c5ae
JH
1562 const char *name = refspec->src[0] ? refspec->src : "HEAD";
1563
6e7b66ee
JH
1564 if (refspec->exact_sha1) {
1565 ref_map = alloc_ref(name);
1566 get_sha1_hex(name, ref_map->old_sha1);
1567 } else {
1568 ref_map = get_remote_ref(remote_refs, name);
1569 }
9ad7c5ae
JH
1570 if (!missing_ok && !ref_map)
1571 die("Couldn't find remote ref %s", name);
1572 if (ref_map) {
1573 ref_map->peer_ref = get_local_ref(refspec->dst);
1574 if (ref_map->peer_ref && refspec->force)
1575 ref_map->peer_ref->force = 1;
1576 }
d71ab174
DB
1577 }
1578
ef00d150
DB
1579 for (rmp = &ref_map; *rmp; ) {
1580 if ((*rmp)->peer_ref) {
5c08c1f2
JH
1581 if (prefixcmp((*rmp)->peer_ref->name, "refs/") ||
1582 check_refname_format((*rmp)->peer_ref->name, 0)) {
ef00d150
DB
1583 struct ref *ignore = *rmp;
1584 error("* Ignoring funny ref '%s' locally",
1585 (*rmp)->peer_ref->name);
1586 *rmp = (*rmp)->next;
1587 free(ignore->peer_ref);
1588 free(ignore);
1589 continue;
1590 }
1591 }
1592 rmp = &((*rmp)->next);
d71ab174
DB
1593 }
1594
8f70a765
AR
1595 if (ref_map)
1596 tail_link_ref(ref_map, tail);
d71ab174
DB
1597
1598 return 0;
1599}
be885d96
DB
1600
1601int resolve_remote_symref(struct ref *ref, struct ref *list)
1602{
1603 if (!ref->symref)
1604 return 0;
1605 for (; list; list = list->next)
1606 if (!strcmp(ref->symref, list->name)) {
1607 hashcpy(ref->old_sha1, list->old_sha1);
1608 return 0;
1609 }
1610 return 1;
1611}
6d21bf96 1612
ec8452d5
JS
1613static void unmark_and_free(struct commit_list *list, unsigned int mark)
1614{
1615 while (list) {
1616 struct commit_list *temp = list;
1617 temp->item->object.flags &= ~mark;
1618 list = temp->next;
1619 free(temp);
1620 }
1621}
1622
1623int ref_newer(const unsigned char *new_sha1, const unsigned char *old_sha1)
1624{
1625 struct object *o;
1626 struct commit *old, *new;
1627 struct commit_list *list, *used;
1628 int found = 0;
1629
75e5c0dc
JH
1630 /*
1631 * Both new and old must be commit-ish and new is descendant of
ec8452d5
JS
1632 * old. Otherwise we require --force.
1633 */
1634 o = deref_tag(parse_object(old_sha1), NULL, 0);
1635 if (!o || o->type != OBJ_COMMIT)
1636 return 0;
1637 old = (struct commit *) o;
1638
1639 o = deref_tag(parse_object(new_sha1), NULL, 0);
1640 if (!o || o->type != OBJ_COMMIT)
1641 return 0;
1642 new = (struct commit *) o;
1643
1644 if (parse_commit(new) < 0)
1645 return 0;
1646
1647 used = list = NULL;
1648 commit_list_insert(new, &list);
1649 while (list) {
1650 new = pop_most_recent_commit(&list, TMP_MARK);
1651 commit_list_insert(new, &used);
1652 if (new == old) {
1653 found = 1;
1654 break;
1655 }
1656 }
1657 unmark_and_free(list, TMP_MARK);
1658 unmark_and_free(used, TMP_MARK);
1659 return found;
1660}
1661
6d21bf96
JH
1662/*
1663 * Return true if there is anything to report, otherwise false.
1664 */
1665int stat_tracking_info(struct branch *branch, int *num_ours, int *num_theirs)
1666{
1667 unsigned char sha1[20];
1668 struct commit *ours, *theirs;
1669 char symmetric[84];
1670 struct rev_info revs;
1671 const char *rev_argv[10], *base;
1672 int rev_argc;
1673
1674 /*
1675 * Nothing to report unless we are marked to build on top of
1676 * somebody else.
1677 */
1678 if (!branch ||
1679 !branch->merge || !branch->merge[0] || !branch->merge[0]->dst)
1680 return 0;
1681
1682 /*
1683 * If what we used to build on no longer exists, there is
1684 * nothing to report.
1685 */
1686 base = branch->merge[0]->dst;
c6893323 1687 if (read_ref(base, sha1))
6d21bf96 1688 return 0;
57ffc5f8 1689 theirs = lookup_commit_reference(sha1);
6d21bf96
JH
1690 if (!theirs)
1691 return 0;
1692
c6893323 1693 if (read_ref(branch->refname, sha1))
6d21bf96 1694 return 0;
57ffc5f8 1695 ours = lookup_commit_reference(sha1);
6d21bf96
JH
1696 if (!ours)
1697 return 0;
1698
1699 /* are we the same? */
1700 if (theirs == ours)
1701 return 0;
1702
8fbf879e 1703 /* Run "rev-list --left-right ours...theirs" internally... */
6d21bf96
JH
1704 rev_argc = 0;
1705 rev_argv[rev_argc++] = NULL;
1706 rev_argv[rev_argc++] = "--left-right";
1707 rev_argv[rev_argc++] = symmetric;
1708 rev_argv[rev_argc++] = "--";
1709 rev_argv[rev_argc] = NULL;
1710
1711 strcpy(symmetric, sha1_to_hex(ours->object.sha1));
1712 strcpy(symmetric + 40, "...");
1713 strcpy(symmetric + 43, sha1_to_hex(theirs->object.sha1));
1714
1715 init_revisions(&revs, NULL);
1716 setup_revisions(rev_argc, rev_argv, &revs, NULL);
1717 prepare_revision_walk(&revs);
1718
1719 /* ... and count the commits on each side. */
1720 *num_ours = 0;
1721 *num_theirs = 0;
1722 while (1) {
1723 struct commit *c = get_revision(&revs);
1724 if (!c)
1725 break;
1726 if (c->object.flags & SYMMETRIC_LEFT)
1727 (*num_ours)++;
1728 else
1729 (*num_theirs)++;
1730 }
c0234b2e
JH
1731
1732 /* clear object flags smudged by the above traversal */
1733 clear_commit_marks(ours, ALL_REV_FLAGS);
1734 clear_commit_marks(theirs, ALL_REV_FLAGS);
6d21bf96
JH
1735 return 1;
1736}
1737
1738/*
1739 * Return true when there is anything to report, otherwise false.
1740 */
1741int format_tracking_info(struct branch *branch, struct strbuf *sb)
1742{
1743 int num_ours, num_theirs;
4de53ce0 1744 const char *base;
6d21bf96
JH
1745
1746 if (!stat_tracking_info(branch, &num_ours, &num_theirs))
1747 return 0;
1748
1749 base = branch->merge[0]->dst;
45972ffb 1750 base = shorten_unambiguous_ref(base, 0);
c190ced6 1751 if (!num_theirs) {
8a5b7494
JX
1752 strbuf_addf(sb,
1753 Q_("Your branch is ahead of '%s' by %d commit.\n",
1754 "Your branch is ahead of '%s' by %d commits.\n",
1755 num_ours),
1756 base, num_ours);
491e3075
JK
1757 if (advice_status_hints)
1758 strbuf_addf(sb,
1759 _(" (use \"git push\" to publish your local commits)\n"));
c190ced6 1760 } else if (!num_ours) {
8a5b7494
JX
1761 strbuf_addf(sb,
1762 Q_("Your branch is behind '%s' by %d commit, "
1763 "and can be fast-forwarded.\n",
1764 "Your branch is behind '%s' by %d commits, "
1765 "and can be fast-forwarded.\n",
1766 num_theirs),
1767 base, num_theirs);
491e3075
JK
1768 if (advice_status_hints)
1769 strbuf_addf(sb,
1770 _(" (use \"git pull\" to update your local branch)\n"));
c190ced6 1771 } else {
8a5b7494
JX
1772 strbuf_addf(sb,
1773 Q_("Your branch and '%s' have diverged,\n"
1774 "and have %d and %d different commit each, "
1775 "respectively.\n",
1776 "Your branch and '%s' have diverged,\n"
1777 "and have %d and %d different commits each, "
1778 "respectively.\n",
1779 num_theirs),
1780 base, num_ours, num_theirs);
491e3075
JK
1781 if (advice_status_hints)
1782 strbuf_addf(sb,
1783 _(" (use \"git pull\" to merge the remote branch into yours)\n"));
c190ced6 1784 }
6d21bf96
JH
1785 return 1;
1786}
454e2025
JS
1787
1788static int one_local_ref(const char *refname, const unsigned char *sha1, int flag, void *cb_data)
1789{
1790 struct ref ***local_tail = cb_data;
1791 struct ref *ref;
1792 int len;
1793
1794 /* we already know it starts with refs/ to get here */
8d9c5010 1795 if (check_refname_format(refname + 5, 0))
454e2025
JS
1796 return 0;
1797
1798 len = strlen(refname) + 1;
1799 ref = xcalloc(1, sizeof(*ref) + len);
1800 hashcpy(ref->new_sha1, sha1);
1801 memcpy(ref->name, refname, len);
1802 **local_tail = ref;
1803 *local_tail = &ref->next;
1804 return 0;
1805}
1806
1807struct ref *get_local_heads(void)
1808{
55f0566f 1809 struct ref *local_refs = NULL, **local_tail = &local_refs;
454e2025
JS
1810 for_each_ref(one_local_ref, &local_tail);
1811 return local_refs;
1812}
8ef51733 1813
4229f1fa
JS
1814struct ref *guess_remote_head(const struct ref *head,
1815 const struct ref *refs,
1816 int all)
8ef51733 1817{
8ef51733 1818 const struct ref *r;
4229f1fa
JS
1819 struct ref *list = NULL;
1820 struct ref **tail = &list;
8ef51733 1821
6cb4e6cc 1822 if (!head)
8ef51733
JS
1823 return NULL;
1824
fbb074c2
JK
1825 /*
1826 * Some transports support directly peeking at
1827 * where HEAD points; if that is the case, then
1828 * we don't have to guess.
1829 */
1830 if (head->symref)
1831 return copy_ref(find_ref_by_name(refs, head->symref));
1832
8ef51733 1833 /* If refs/heads/master could be right, it is. */
4229f1fa
JS
1834 if (!all) {
1835 r = find_ref_by_name(refs, "refs/heads/master");
1836 if (r && !hashcmp(r->old_sha1, head->old_sha1))
1837 return copy_ref(r);
1838 }
8ef51733
JS
1839
1840 /* Look for another ref that points there */
4229f1fa 1841 for (r = refs; r; r = r->next) {
61adfd30
JK
1842 if (r != head &&
1843 !prefixcmp(r->name, "refs/heads/") &&
1844 !hashcmp(r->old_sha1, head->old_sha1)) {
4229f1fa
JS
1845 *tail = copy_ref(r);
1846 tail = &((*tail)->next);
1847 if (!all)
1848 break;
1849 }
1850 }
8ef51733 1851
4229f1fa 1852 return list;
8ef51733 1853}
f2ef6075
JS
1854
1855struct stale_heads_info {
f2ef6075
JS
1856 struct string_list *ref_names;
1857 struct ref **stale_refs_tail;
ed43de6e
CMN
1858 struct refspec *refs;
1859 int ref_count;
f2ef6075
JS
1860};
1861
1862static int get_stale_heads_cb(const char *refname,
1863 const unsigned char *sha1, int flags, void *cb_data)
1864{
1865 struct stale_heads_info *info = cb_data;
ed43de6e
CMN
1866 struct refspec query;
1867 memset(&query, 0, sizeof(struct refspec));
1868 query.dst = (char *)refname;
1869
1870 if (query_refspecs(info->refs, info->ref_count, &query))
1871 return 0; /* No matches */
1872
1873 /*
1874 * If we did find a suitable refspec and it's not a symref and
1875 * it's not in the list of refs that currently exist in that
1876 * remote we consider it to be stale.
1877 */
1878 if (!((flags & REF_ISSYMREF) ||
1879 string_list_has_string(info->ref_names, query.src))) {
1880 struct ref *ref = make_linked_ref(refname, &info->stale_refs_tail);
1881 hashcpy(ref->new_sha1, sha1);
f2ef6075 1882 }
ed43de6e
CMN
1883
1884 free(query.src);
f2ef6075
JS
1885 return 0;
1886}
1887
ed43de6e 1888struct ref *get_stale_heads(struct refspec *refs, int ref_count, struct ref *fetch_map)
f2ef6075
JS
1889{
1890 struct ref *ref, *stale_refs = NULL;
183113a5 1891 struct string_list ref_names = STRING_LIST_INIT_NODUP;
f2ef6075 1892 struct stale_heads_info info;
f2ef6075
JS
1893 info.ref_names = &ref_names;
1894 info.stale_refs_tail = &stale_refs;
ed43de6e
CMN
1895 info.refs = refs;
1896 info.ref_count = ref_count;
f2ef6075 1897 for (ref = fetch_map; ref; ref = ref->next)
1d2f80fa 1898 string_list_append(&ref_names, ref->name);
f2ef6075
JS
1899 sort_string_list(&ref_names);
1900 for_each_ref(get_stale_heads_cb, &info);
1901 string_list_clear(&ref_names, 0);
1902 return stale_refs;
1903}