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Commit | Line | Data |
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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 |
12 | enum map_direction { FROM_SRC, FROM_DST }; |
13 | ||
e0aaa29f DB |
14 | static 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 | ||
23 | const struct refspec *tag_refspec = &s_tag_refspec; | |
24 | ||
844112ca JH |
25 | struct counted_string { |
26 | size_t len; | |
27 | const char *s; | |
28 | }; | |
55029ae4 DB |
29 | struct 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 |
36 | struct rewrites { |
37 | struct rewrite **rewrite; | |
38 | int rewrite_alloc; | |
39 | int rewrite_nr; | |
40 | }; | |
55029ae4 | 41 | |
5751f490 | 42 | static struct remote **remotes; |
2d31347b DB |
43 | static int remotes_alloc; |
44 | static int remotes_nr; | |
d0da003d | 45 | static struct hashmap remotes_hash; |
5751f490 | 46 | |
cf818348 | 47 | static struct branch **branches; |
2d31347b DB |
48 | static int branches_alloc; |
49 | static int branches_nr; | |
cf818348 DB |
50 | |
51 | static struct branch *current_branch; | |
52 | static const char *default_remote_name; | |
98b406f3 | 53 | static const char *branch_pushremote_name; |
f24f715e | 54 | static const char *pushremote_name; |
fa685bdf | 55 | static int explicit_default_remote_name; |
cf818348 | 56 | |
d071d942 | 57 | static struct rewrites rewrites; |
1c2eafb8 | 58 | static struct rewrites rewrites_push; |
55029ae4 | 59 | |
5751f490 DB |
60 | #define BUF_SIZE (2048) |
61 | static char buffer[BUF_SIZE]; | |
62 | ||
0a4da29d DB |
63 | static int valid_remote(const struct remote *remote) |
64 | { | |
c578f51d | 65 | return (!!remote->url) || (!!remote->foreign_vcs); |
0a4da29d DB |
66 | } |
67 | ||
d071d942 | 68 | static const char *alias_url(const char *url, struct rewrites *r) |
55029ae4 DB |
69 | { |
70 | int i, j; | |
844112ca JH |
71 | char *ret; |
72 | struct counted_string *longest; | |
73 | int longest_i; | |
74 | ||
75 | longest = NULL; | |
76 | longest_i = -1; | |
d071d942 JT |
77 | for (i = 0; i < r->rewrite_nr; i++) { |
78 | if (!r->rewrite[i]) | |
55029ae4 | 79 | continue; |
d071d942 | 80 | for (j = 0; j < r->rewrite[i]->instead_of_nr; j++) { |
59556548 | 81 | if (starts_with(url, r->rewrite[i]->instead_of[j].s) && |
844112ca | 82 | (!longest || |
d071d942 JT |
83 | longest->len < r->rewrite[i]->instead_of[j].len)) { |
84 | longest = &(r->rewrite[i]->instead_of[j]); | |
844112ca | 85 | longest_i = i; |
55029ae4 DB |
86 | } |
87 | } | |
88 | } | |
844112ca JH |
89 | if (!longest) |
90 | return url; | |
91 | ||
d071d942 | 92 | ret = xmalloc(r->rewrite[longest_i]->baselen + |
844112ca | 93 | (strlen(url) - longest->len) + 1); |
d071d942 JT |
94 | strcpy(ret, r->rewrite[longest_i]->base); |
95 | strcpy(ret + r->rewrite[longest_i]->baselen, url + longest->len); | |
844112ca | 96 | return ret; |
55029ae4 DB |
97 | } |
98 | ||
5751f490 DB |
99 | static void add_push_refspec(struct remote *remote, const char *ref) |
100 | { | |
2d31347b DB |
101 | ALLOC_GROW(remote->push_refspec, |
102 | remote->push_refspec_nr + 1, | |
103 | remote->push_refspec_alloc); | |
104 | remote->push_refspec[remote->push_refspec_nr++] = ref; | |
5751f490 DB |
105 | } |
106 | ||
5d46c9d4 DB |
107 | static void add_fetch_refspec(struct remote *remote, const char *ref) |
108 | { | |
2d31347b DB |
109 | ALLOC_GROW(remote->fetch_refspec, |
110 | remote->fetch_refspec_nr + 1, | |
111 | remote->fetch_refspec_alloc); | |
112 | remote->fetch_refspec[remote->fetch_refspec_nr++] = ref; | |
5d46c9d4 DB |
113 | } |
114 | ||
28b91f8a | 115 | static void add_url(struct remote *remote, const char *url) |
5751f490 | 116 | { |
2d31347b DB |
117 | ALLOC_GROW(remote->url, remote->url_nr + 1, remote->url_alloc); |
118 | remote->url[remote->url_nr++] = url; | |
5751f490 DB |
119 | } |
120 | ||
20346234 MG |
121 | static void add_pushurl(struct remote *remote, const char *pushurl) |
122 | { | |
123 | ALLOC_GROW(remote->pushurl, remote->pushurl_nr + 1, remote->pushurl_alloc); | |
124 | remote->pushurl[remote->pushurl_nr++] = pushurl; | |
125 | } | |
126 | ||
1c2eafb8 JT |
127 | static void add_pushurl_alias(struct remote *remote, const char *url) |
128 | { | |
129 | const char *pushurl = alias_url(url, &rewrites_push); | |
130 | if (pushurl != url) | |
131 | add_pushurl(remote, pushurl); | |
132 | } | |
133 | ||
134 | static void add_url_alias(struct remote *remote, const char *url) | |
135 | { | |
136 | add_url(remote, alias_url(url, &rewrites)); | |
137 | add_pushurl_alias(remote, url); | |
138 | } | |
139 | ||
d0da003d PR |
140 | struct remotes_hash_key { |
141 | const char *str; | |
142 | int len; | |
143 | }; | |
144 | ||
145 | static int remotes_hash_cmp(const struct remote *a, const struct remote *b, const struct remotes_hash_key *key) | |
146 | { | |
147 | if (key) | |
148 | return strncmp(a->name, key->str, key->len) || a->name[key->len]; | |
149 | else | |
150 | return strcmp(a->name, b->name); | |
151 | } | |
152 | ||
153 | static inline void init_remotes_hash(void) | |
154 | { | |
155 | if (!remotes_hash.cmpfn) | |
156 | hashmap_init(&remotes_hash, (hashmap_cmp_fn)remotes_hash_cmp, 0); | |
157 | } | |
158 | ||
5751f490 DB |
159 | static struct remote *make_remote(const char *name, int len) |
160 | { | |
d0da003d PR |
161 | struct remote *ret, *replaced; |
162 | struct remotes_hash_key lookup; | |
163 | struct hashmap_entry lookup_entry; | |
5751f490 | 164 | |
d0da003d PR |
165 | if (!len) |
166 | len = strlen(name); | |
167 | ||
168 | init_remotes_hash(); | |
169 | lookup.str = name; | |
170 | lookup.len = len; | |
171 | hashmap_entry_init(&lookup_entry, memhash(name, len)); | |
172 | ||
173 | if ((ret = hashmap_get(&remotes_hash, &lookup_entry, &lookup)) != NULL) | |
174 | return ret; | |
5751f490 | 175 | |
2d31347b | 176 | ret = xcalloc(1, sizeof(struct remote)); |
737c5a9c | 177 | ret->prune = -1; /* unspecified */ |
2d31347b DB |
178 | ALLOC_GROW(remotes, remotes_nr + 1, remotes_alloc); |
179 | remotes[remotes_nr++] = ret; | |
d0da003d PR |
180 | ret->name = xstrndup(name, len); |
181 | ||
182 | hashmap_entry_init(ret, lookup_entry.hash); | |
183 | replaced = hashmap_put(&remotes_hash, ret); | |
184 | assert(replaced == NULL); /* no previous entry overwritten */ | |
2d31347b | 185 | return ret; |
5751f490 DB |
186 | } |
187 | ||
cf818348 DB |
188 | static void add_merge(struct branch *branch, const char *name) |
189 | { | |
2d31347b DB |
190 | ALLOC_GROW(branch->merge_name, branch->merge_nr + 1, |
191 | branch->merge_alloc); | |
192 | branch->merge_name[branch->merge_nr++] = name; | |
cf818348 DB |
193 | } |
194 | ||
195 | static struct branch *make_branch(const char *name, int len) | |
196 | { | |
2d31347b DB |
197 | struct branch *ret; |
198 | int i; | |
cf818348 | 199 | |
2d31347b DB |
200 | for (i = 0; i < branches_nr; i++) { |
201 | if (len ? (!strncmp(name, branches[i]->name, len) && | |
202 | !branches[i]->name[len]) : | |
203 | !strcmp(name, branches[i]->name)) | |
204 | return branches[i]; | |
cf818348 DB |
205 | } |
206 | ||
2d31347b DB |
207 | ALLOC_GROW(branches, branches_nr + 1, branches_alloc); |
208 | ret = xcalloc(1, sizeof(struct branch)); | |
209 | branches[branches_nr++] = ret; | |
cf818348 | 210 | if (len) |
2d31347b | 211 | ret->name = xstrndup(name, len); |
cf818348 | 212 | else |
2d31347b | 213 | ret->name = xstrdup(name); |
fa3f60b7 | 214 | ret->refname = xstrfmt("refs/heads/%s", ret->name); |
cf818348 | 215 | |
2d31347b | 216 | return ret; |
cf818348 DB |
217 | } |
218 | ||
d071d942 | 219 | static struct rewrite *make_rewrite(struct rewrites *r, const char *base, int len) |
55029ae4 DB |
220 | { |
221 | struct rewrite *ret; | |
222 | int i; | |
223 | ||
d071d942 | 224 | for (i = 0; i < r->rewrite_nr; i++) { |
844112ca | 225 | if (len |
d071d942 JT |
226 | ? (len == r->rewrite[i]->baselen && |
227 | !strncmp(base, r->rewrite[i]->base, len)) | |
228 | : !strcmp(base, r->rewrite[i]->base)) | |
229 | return r->rewrite[i]; | |
55029ae4 DB |
230 | } |
231 | ||
d071d942 | 232 | ALLOC_GROW(r->rewrite, r->rewrite_nr + 1, r->rewrite_alloc); |
55029ae4 | 233 | ret = xcalloc(1, sizeof(struct rewrite)); |
d071d942 | 234 | r->rewrite[r->rewrite_nr++] = ret; |
844112ca | 235 | if (len) { |
55029ae4 | 236 | ret->base = xstrndup(base, len); |
844112ca JH |
237 | ret->baselen = len; |
238 | } | |
239 | else { | |
55029ae4 | 240 | ret->base = xstrdup(base); |
844112ca JH |
241 | ret->baselen = strlen(base); |
242 | } | |
55029ae4 DB |
243 | return ret; |
244 | } | |
245 | ||
246 | static void add_instead_of(struct rewrite *rewrite, const char *instead_of) | |
247 | { | |
248 | ALLOC_GROW(rewrite->instead_of, rewrite->instead_of_nr + 1, rewrite->instead_of_alloc); | |
844112ca JH |
249 | rewrite->instead_of[rewrite->instead_of_nr].s = instead_of; |
250 | rewrite->instead_of[rewrite->instead_of_nr].len = strlen(instead_of); | |
251 | rewrite->instead_of_nr++; | |
55029ae4 DB |
252 | } |
253 | ||
5751f490 DB |
254 | static void read_remotes_file(struct remote *remote) |
255 | { | |
256 | FILE *f = fopen(git_path("remotes/%s", remote->name), "r"); | |
257 | ||
258 | if (!f) | |
259 | return; | |
89cf4c70 | 260 | remote->origin = REMOTE_REMOTES; |
5751f490 DB |
261 | while (fgets(buffer, BUF_SIZE, f)) { |
262 | int value_list; | |
263 | char *s, *p; | |
264 | ||
59556548 | 265 | if (starts_with(buffer, "URL:")) { |
5751f490 DB |
266 | value_list = 0; |
267 | s = buffer + 4; | |
59556548 | 268 | } else if (starts_with(buffer, "Push:")) { |
5751f490 DB |
269 | value_list = 1; |
270 | s = buffer + 5; | |
59556548 | 271 | } else if (starts_with(buffer, "Pull:")) { |
5d46c9d4 DB |
272 | value_list = 2; |
273 | s = buffer + 5; | |
5751f490 DB |
274 | } else |
275 | continue; | |
276 | ||
277 | while (isspace(*s)) | |
278 | s++; | |
279 | if (!*s) | |
280 | continue; | |
281 | ||
282 | p = s + strlen(s); | |
283 | while (isspace(p[-1])) | |
284 | *--p = 0; | |
285 | ||
286 | switch (value_list) { | |
287 | case 0: | |
55029ae4 | 288 | add_url_alias(remote, xstrdup(s)); |
5751f490 DB |
289 | break; |
290 | case 1: | |
291 | add_push_refspec(remote, xstrdup(s)); | |
292 | break; | |
5d46c9d4 DB |
293 | case 2: |
294 | add_fetch_refspec(remote, xstrdup(s)); | |
295 | break; | |
5751f490 DB |
296 | } |
297 | } | |
298 | fclose(f); | |
299 | } | |
300 | ||
301 | static void read_branches_file(struct remote *remote) | |
302 | { | |
cf818348 | 303 | char *frag; |
f285a2d7 | 304 | struct strbuf branch = STRBUF_INIT; |
55cfde25 | 305 | int n = 1000; |
5751f490 DB |
306 | FILE *f = fopen(git_path("branches/%.*s", n, remote->name), "r"); |
307 | char *s, *p; | |
308 | int len; | |
309 | ||
310 | if (!f) | |
311 | return; | |
312 | s = fgets(buffer, BUF_SIZE, f); | |
313 | fclose(f); | |
314 | if (!s) | |
315 | return; | |
316 | while (isspace(*s)) | |
317 | s++; | |
318 | if (!*s) | |
319 | return; | |
89cf4c70 | 320 | remote->origin = REMOTE_BRANCHES; |
5751f490 DB |
321 | p = s + strlen(s); |
322 | while (isspace(p[-1])) | |
323 | *--p = 0; | |
324 | len = p - s; | |
5751f490 DB |
325 | p = xmalloc(len + 1); |
326 | strcpy(p, s); | |
472fa4cd DB |
327 | |
328 | /* | |
55cfde25 | 329 | * The branches file would have URL and optionally |
472fa4cd DB |
330 | * #branch specified. The "master" (or specified) branch is |
331 | * fetched and stored in the local branch of the same name. | |
332 | */ | |
cf818348 DB |
333 | frag = strchr(p, '#'); |
334 | if (frag) { | |
335 | *(frag++) = '\0'; | |
472fa4cd DB |
336 | strbuf_addf(&branch, "refs/heads/%s", frag); |
337 | } else | |
338 | strbuf_addstr(&branch, "refs/heads/master"); | |
55cfde25 RR |
339 | |
340 | strbuf_addf(&branch, ":refs/heads/%s", remote->name); | |
55029ae4 | 341 | add_url_alias(remote, p); |
2af202be | 342 | add_fetch_refspec(remote, strbuf_detach(&branch, NULL)); |
18afe101 MK |
343 | /* |
344 | * Cogito compatible push: push current HEAD to remote #branch | |
345 | * (master if missing) | |
346 | */ | |
347 | strbuf_init(&branch, 0); | |
348 | strbuf_addstr(&branch, "HEAD"); | |
349 | if (frag) | |
350 | strbuf_addf(&branch, ":refs/heads/%s", frag); | |
351 | else | |
352 | strbuf_addstr(&branch, ":refs/heads/master"); | |
2af202be | 353 | add_push_refspec(remote, strbuf_detach(&branch, NULL)); |
d71ab174 | 354 | remote->fetch_tags = 1; /* always auto-follow */ |
5751f490 DB |
355 | } |
356 | ||
ef90d6d4 | 357 | static int handle_config(const char *key, const char *value, void *cb) |
5751f490 DB |
358 | { |
359 | const char *name; | |
360 | const char *subkey; | |
361 | struct remote *remote; | |
cf818348 | 362 | struct branch *branch; |
59556548 | 363 | if (starts_with(key, "branch.")) { |
cf818348 DB |
364 | name = key + 7; |
365 | subkey = strrchr(name, '.'); | |
cf818348 DB |
366 | if (!subkey) |
367 | return 0; | |
896c0535 | 368 | branch = make_branch(name, subkey - name); |
cf818348 | 369 | if (!strcmp(subkey, ".remote")) { |
b4b63435 RR |
370 | if (git_config_string(&branch->remote_name, key, value)) |
371 | return -1; | |
fa685bdf | 372 | if (branch == current_branch) { |
cf818348 | 373 | default_remote_name = branch->remote_name; |
fa685bdf DB |
374 | explicit_default_remote_name = 1; |
375 | } | |
9f765ce6 RR |
376 | } else if (!strcmp(subkey, ".pushremote")) { |
377 | if (branch == current_branch) | |
98b406f3 | 378 | if (git_config_string(&branch_pushremote_name, key, value)) |
9f765ce6 | 379 | return -1; |
d2370cc2 JH |
380 | } else if (!strcmp(subkey, ".merge")) { |
381 | if (!value) | |
382 | return config_error_nonbool(key); | |
cf818348 | 383 | add_merge(branch, xstrdup(value)); |
d2370cc2 | 384 | } |
cf818348 | 385 | return 0; |
5751f490 | 386 | } |
59556548 | 387 | if (starts_with(key, "url.")) { |
55029ae4 | 388 | struct rewrite *rewrite; |
60e3aba9 | 389 | name = key + 4; |
55029ae4 DB |
390 | subkey = strrchr(name, '.'); |
391 | if (!subkey) | |
392 | return 0; | |
55029ae4 | 393 | if (!strcmp(subkey, ".insteadof")) { |
1c2eafb8 JT |
394 | rewrite = make_rewrite(&rewrites, name, subkey - name); |
395 | if (!value) | |
396 | return config_error_nonbool(key); | |
397 | add_instead_of(rewrite, xstrdup(value)); | |
398 | } else if (!strcmp(subkey, ".pushinsteadof")) { | |
399 | rewrite = make_rewrite(&rewrites_push, name, subkey - name); | |
55029ae4 DB |
400 | if (!value) |
401 | return config_error_nonbool(key); | |
402 | add_instead_of(rewrite, xstrdup(value)); | |
403 | } | |
404 | } | |
224c2171 | 405 | |
59556548 | 406 | if (!starts_with(key, "remote.")) |
5751f490 DB |
407 | return 0; |
408 | name = key + 7; | |
224c2171 RR |
409 | |
410 | /* Handle remote.* variables */ | |
411 | if (!strcmp(name, "pushdefault")) | |
412 | return git_config_string(&pushremote_name, key, value); | |
413 | ||
414 | /* Handle remote.<name>.* variables */ | |
c82efafc BC |
415 | if (*name == '/') { |
416 | warning("Config remote shorthand cannot begin with '/': %s", | |
417 | name); | |
418 | return 0; | |
419 | } | |
5751f490 DB |
420 | subkey = strrchr(name, '.'); |
421 | if (!subkey) | |
cd294bc3 | 422 | return 0; |
5751f490 | 423 | remote = make_remote(name, subkey - name); |
89cf4c70 | 424 | remote->origin = REMOTE_CONFIG; |
84bb2dfd PB |
425 | if (!strcmp(subkey, ".mirror")) |
426 | remote->mirror = git_config_bool(key, value); | |
427 | else if (!strcmp(subkey, ".skipdefaultupdate")) | |
428 | remote->skip_default_update = git_config_bool(key, value); | |
7cc91a2f BG |
429 | else if (!strcmp(subkey, ".skipfetchall")) |
430 | remote->skip_default_update = git_config_bool(key, value); | |
737c5a9c MS |
431 | else if (!strcmp(subkey, ".prune")) |
432 | remote->prune = git_config_bool(key, value); | |
84bb2dfd PB |
433 | else if (!strcmp(subkey, ".url")) { |
434 | const char *v; | |
435 | if (git_config_string(&v, key, value)) | |
436 | return -1; | |
437 | add_url(remote, v); | |
20346234 MG |
438 | } else if (!strcmp(subkey, ".pushurl")) { |
439 | const char *v; | |
440 | if (git_config_string(&v, key, value)) | |
441 | return -1; | |
442 | add_pushurl(remote, v); | |
5751f490 | 443 | } else if (!strcmp(subkey, ".push")) { |
84bb2dfd PB |
444 | const char *v; |
445 | if (git_config_string(&v, key, value)) | |
446 | return -1; | |
447 | add_push_refspec(remote, v); | |
5d46c9d4 | 448 | } else if (!strcmp(subkey, ".fetch")) { |
84bb2dfd PB |
449 | const char *v; |
450 | if (git_config_string(&v, key, value)) | |
451 | return -1; | |
452 | add_fetch_refspec(remote, v); | |
5751f490 | 453 | } else if (!strcmp(subkey, ".receivepack")) { |
84bb2dfd PB |
454 | const char *v; |
455 | if (git_config_string(&v, key, value)) | |
456 | return -1; | |
5751f490 | 457 | if (!remote->receivepack) |
84bb2dfd | 458 | remote->receivepack = v; |
5751f490 DB |
459 | else |
460 | error("more than one receivepack given, using the first"); | |
0012ba21 | 461 | } else if (!strcmp(subkey, ".uploadpack")) { |
84bb2dfd PB |
462 | const char *v; |
463 | if (git_config_string(&v, key, value)) | |
464 | return -1; | |
0012ba21 | 465 | if (!remote->uploadpack) |
84bb2dfd | 466 | remote->uploadpack = v; |
0012ba21 DB |
467 | else |
468 | error("more than one uploadpack given, using the first"); | |
d71ab174 DB |
469 | } else if (!strcmp(subkey, ".tagopt")) { |
470 | if (!strcmp(value, "--no-tags")) | |
471 | remote->fetch_tags = -1; | |
944163a4 ST |
472 | else if (!strcmp(value, "--tags")) |
473 | remote->fetch_tags = 2; | |
14c98218 | 474 | } else if (!strcmp(subkey, ".proxy")) { |
84bb2dfd PB |
475 | return git_config_string((const char **)&remote->http_proxy, |
476 | key, value); | |
c578f51d DB |
477 | } else if (!strcmp(subkey, ".vcs")) { |
478 | return git_config_string(&remote->foreign_vcs, key, value); | |
84bb2dfd | 479 | } |
5751f490 DB |
480 | return 0; |
481 | } | |
482 | ||
55029ae4 DB |
483 | static void alias_all_urls(void) |
484 | { | |
485 | int i, j; | |
486 | for (i = 0; i < remotes_nr; i++) { | |
1c2eafb8 | 487 | int add_pushurl_aliases; |
55029ae4 DB |
488 | if (!remotes[i]) |
489 | continue; | |
20346234 | 490 | for (j = 0; j < remotes[i]->pushurl_nr; j++) { |
d071d942 | 491 | remotes[i]->pushurl[j] = alias_url(remotes[i]->pushurl[j], &rewrites); |
20346234 | 492 | } |
1c2eafb8 JT |
493 | add_pushurl_aliases = remotes[i]->pushurl_nr == 0; |
494 | for (j = 0; j < remotes[i]->url_nr; j++) { | |
495 | if (add_pushurl_aliases) | |
496 | add_pushurl_alias(remotes[i], remotes[i]->url[j]); | |
497 | remotes[i]->url[j] = alias_url(remotes[i]->url[j], &rewrites); | |
498 | } | |
55029ae4 DB |
499 | } |
500 | } | |
501 | ||
5751f490 DB |
502 | static void read_config(void) |
503 | { | |
504 | unsigned char sha1[20]; | |
505 | const char *head_ref; | |
506 | int flag; | |
2543d9b6 | 507 | if (default_remote_name) /* did this already */ |
5751f490 | 508 | return; |
11a6ba1c | 509 | default_remote_name = "origin"; |
5751f490 | 510 | current_branch = NULL; |
7695d118 | 511 | head_ref = resolve_ref_unsafe("HEAD", 0, sha1, &flag); |
5751f490 | 512 | if (head_ref && (flag & REF_ISSYMREF) && |
95b567c7 JK |
513 | skip_prefix(head_ref, "refs/heads/", &head_ref)) { |
514 | current_branch = make_branch(head_ref, 0); | |
5751f490 | 515 | } |
ef90d6d4 | 516 | git_config(handle_config, NULL); |
98b406f3 JK |
517 | if (branch_pushremote_name) { |
518 | free((char *)pushremote_name); | |
519 | pushremote_name = branch_pushremote_name; | |
520 | } | |
55029ae4 | 521 | alias_all_urls(); |
5751f490 DB |
522 | } |
523 | ||
2cb1f36d BC |
524 | /* |
525 | * This function frees a refspec array. | |
526 | * Warning: code paths should be checked to ensure that the src | |
527 | * and dst pointers are always freeable pointers as well | |
528 | * as the refspec pointer itself. | |
529 | */ | |
697d7f5d | 530 | static void free_refspecs(struct refspec *refspec, int nr_refspec) |
2cb1f36d BC |
531 | { |
532 | int i; | |
533 | ||
534 | if (!refspec) | |
535 | return; | |
536 | ||
537 | for (i = 0; i < nr_refspec; i++) { | |
538 | free(refspec[i].src); | |
539 | free(refspec[i].dst); | |
540 | } | |
541 | free(refspec); | |
542 | } | |
543 | ||
24b6177e | 544 | static struct refspec *parse_refspec_internal(int nr_refspec, const char **refspec, int fetch, int verify) |
6b62816c DB |
545 | { |
546 | int i; | |
da7a478b | 547 | struct refspec *rs = xcalloc(nr_refspec, sizeof(*rs)); |
46220ca1 | 548 | |
6b62816c | 549 | for (i = 0; i < nr_refspec; i++) { |
47c6ef1c | 550 | size_t llen; |
46220ca1 JH |
551 | int is_glob; |
552 | const char *lhs, *rhs; | |
8d9c5010 | 553 | int flags; |
46220ca1 | 554 | |
8e76bf3f | 555 | is_glob = 0; |
46220ca1 JH |
556 | |
557 | lhs = refspec[i]; | |
558 | if (*lhs == '+') { | |
6b62816c | 559 | rs[i].force = 1; |
46220ca1 | 560 | lhs++; |
6b62816c | 561 | } |
46220ca1 JH |
562 | |
563 | rhs = strrchr(lhs, ':'); | |
a83619d6 PB |
564 | |
565 | /* | |
566 | * Before going on, special case ":" (or "+:") as a refspec | |
def24991 | 567 | * for pushing matching refs. |
a83619d6 PB |
568 | */ |
569 | if (!fetch && rhs == lhs && rhs[1] == '\0') { | |
570 | rs[i].matching = 1; | |
571 | continue; | |
572 | } | |
573 | ||
46220ca1 | 574 | if (rhs) { |
47c6ef1c | 575 | size_t rlen = strlen(++rhs); |
abd2bde7 | 576 | is_glob = (1 <= rlen && strchr(rhs, '*')); |
08fbdb30 | 577 | rs[i].dst = xstrndup(rhs, rlen); |
6b62816c | 578 | } |
ef00d150 | 579 | |
46220ca1 | 580 | llen = (rhs ? (rhs - lhs - 1) : strlen(lhs)); |
abd2bde7 | 581 | if (1 <= llen && memchr(lhs, '*', llen)) { |
7d19da46 JH |
582 | if ((rhs && !is_glob) || (!rhs && fetch)) |
583 | goto invalid; | |
584 | is_glob = 1; | |
7d19da46 JH |
585 | } else if (rhs && is_glob) { |
586 | goto invalid; | |
ef00d150 | 587 | } |
7d19da46 | 588 | |
46220ca1 JH |
589 | rs[i].pattern = is_glob; |
590 | rs[i].src = xstrndup(lhs, llen); | |
8d9c5010 | 591 | flags = REFNAME_ALLOW_ONELEVEL | (is_glob ? REFNAME_REFSPEC_PATTERN : 0); |
46220ca1 JH |
592 | |
593 | if (fetch) { | |
6e7b66ee JH |
594 | unsigned char unused[40]; |
595 | ||
def24991 | 596 | /* LHS */ |
46220ca1 | 597 | if (!*rs[i].src) |
def24991 | 598 | ; /* empty is ok; it means "HEAD" */ |
6e7b66ee JH |
599 | else if (llen == 40 && !get_sha1_hex(rs[i].src, unused)) |
600 | rs[i].exact_sha1 = 1; /* ok */ | |
def24991 JH |
601 | else if (!check_refname_format(rs[i].src, flags)) |
602 | ; /* valid looking ref is ok */ | |
603 | else | |
8d9c5010 | 604 | goto invalid; |
def24991 | 605 | /* RHS */ |
8d9c5010 | 606 | if (!rs[i].dst) |
def24991 | 607 | ; /* missing is ok; it is the same as empty */ |
8d9c5010 | 608 | else if (!*rs[i].dst) |
def24991 JH |
609 | ; /* empty is ok; it means "do not store" */ |
610 | else if (!check_refname_format(rs[i].dst, flags)) | |
611 | ; /* valid looking ref is ok */ | |
612 | else | |
8d9c5010 | 613 | goto invalid; |
46220ca1 JH |
614 | } else { |
615 | /* | |
616 | * LHS | |
617 | * - empty is allowed; it means delete. | |
618 | * - when wildcarded, it must be a valid looking ref. | |
619 | * - otherwise, it must be an extended SHA-1, but | |
620 | * there is no existing way to validate this. | |
621 | */ | |
622 | if (!*rs[i].src) | |
623 | ; /* empty is ok */ | |
624 | else if (is_glob) { | |
8d9c5010 | 625 | if (check_refname_format(rs[i].src, flags)) |
46220ca1 JH |
626 | goto invalid; |
627 | } | |
628 | else | |
629 | ; /* anything goes, for now */ | |
630 | /* | |
631 | * RHS | |
632 | * - missing is allowed, but LHS then must be a | |
633 | * valid looking ref. | |
634 | * - empty is not allowed. | |
635 | * - otherwise it must be a valid looking ref. | |
636 | */ | |
637 | if (!rs[i].dst) { | |
8d9c5010 | 638 | if (check_refname_format(rs[i].src, flags)) |
46220ca1 JH |
639 | goto invalid; |
640 | } else if (!*rs[i].dst) { | |
641 | goto invalid; | |
642 | } else { | |
8d9c5010 | 643 | if (check_refname_format(rs[i].dst, flags)) |
46220ca1 JH |
644 | goto invalid; |
645 | } | |
ef00d150 | 646 | } |
6b62816c DB |
647 | } |
648 | return rs; | |
46220ca1 JH |
649 | |
650 | invalid: | |
24b6177e | 651 | if (verify) { |
2cb1f36d BC |
652 | /* |
653 | * nr_refspec must be greater than zero and i must be valid | |
654 | * since it is only possible to reach this point from within | |
655 | * the for loop above. | |
656 | */ | |
657 | free_refspecs(rs, i+1); | |
24b6177e JF |
658 | return NULL; |
659 | } | |
46220ca1 JH |
660 | die("Invalid refspec '%s'", refspec[i]); |
661 | } | |
662 | ||
24b6177e JF |
663 | int valid_fetch_refspec(const char *fetch_refspec_str) |
664 | { | |
24b6177e JF |
665 | struct refspec *refspec; |
666 | ||
66dbfd55 | 667 | refspec = parse_refspec_internal(1, &fetch_refspec_str, 1, 1); |
2cb1f36d | 668 | free_refspecs(refspec, 1); |
24b6177e JF |
669 | return !!refspec; |
670 | } | |
671 | ||
46220ca1 JH |
672 | struct refspec *parse_fetch_refspec(int nr_refspec, const char **refspec) |
673 | { | |
24b6177e | 674 | return parse_refspec_internal(nr_refspec, refspec, 1, 0); |
46220ca1 JH |
675 | } |
676 | ||
697d7f5d | 677 | static struct refspec *parse_push_refspec(int nr_refspec, const char **refspec) |
46220ca1 | 678 | { |
24b6177e | 679 | return parse_refspec_internal(nr_refspec, refspec, 0, 0); |
6b62816c DB |
680 | } |
681 | ||
72ff8943 DB |
682 | void free_refspec(int nr_refspec, struct refspec *refspec) |
683 | { | |
684 | int i; | |
685 | for (i = 0; i < nr_refspec; i++) { | |
686 | free(refspec[i].src); | |
687 | free(refspec[i].dst); | |
688 | } | |
689 | free(refspec); | |
690 | } | |
691 | ||
df93e33c DB |
692 | static int valid_remote_nick(const char *name) |
693 | { | |
8ca12c0d | 694 | if (!name[0] || is_dot_or_dotdot(name)) |
df93e33c DB |
695 | return 0; |
696 | return !strchr(name, '/'); /* no slash */ | |
697 | } | |
698 | ||
f24f715e | 699 | static struct remote *remote_get_1(const char *name, const char *pushremote_name) |
5751f490 DB |
700 | { |
701 | struct remote *ret; | |
fa685bdf | 702 | int name_given = 0; |
5751f490 | 703 | |
fa685bdf DB |
704 | if (name) |
705 | name_given = 1; | |
706 | else { | |
f24f715e RR |
707 | if (pushremote_name) { |
708 | name = pushremote_name; | |
709 | name_given = 1; | |
710 | } else { | |
711 | name = default_remote_name; | |
712 | name_given = explicit_default_remote_name; | |
713 | } | |
fa685bdf | 714 | } |
9326d494 | 715 | |
5751f490 | 716 | ret = make_remote(name, 0); |
df93e33c | 717 | if (valid_remote_nick(name)) { |
0a4da29d | 718 | if (!valid_remote(ret)) |
5751f490 | 719 | read_remotes_file(ret); |
0a4da29d | 720 | if (!valid_remote(ret)) |
5751f490 DB |
721 | read_branches_file(ret); |
722 | } | |
0a4da29d | 723 | if (name_given && !valid_remote(ret)) |
55029ae4 | 724 | add_url_alias(ret, name); |
0a4da29d | 725 | if (!valid_remote(ret)) |
5751f490 | 726 | return NULL; |
46220ca1 JH |
727 | ret->fetch = parse_fetch_refspec(ret->fetch_refspec_nr, ret->fetch_refspec); |
728 | ret->push = parse_push_refspec(ret->push_refspec_nr, ret->push_refspec); | |
5751f490 DB |
729 | return ret; |
730 | } | |
6b62816c | 731 | |
f24f715e RR |
732 | struct remote *remote_get(const char *name) |
733 | { | |
734 | read_config(); | |
735 | return remote_get_1(name, NULL); | |
736 | } | |
737 | ||
738 | struct remote *pushremote_get(const char *name) | |
739 | { | |
740 | read_config(); | |
741 | return remote_get_1(name, pushremote_name); | |
742 | } | |
743 | ||
9a23ba33 FAG |
744 | int remote_is_configured(const char *name) |
745 | { | |
d0da003d PR |
746 | struct remotes_hash_key lookup; |
747 | struct hashmap_entry lookup_entry; | |
9a23ba33 FAG |
748 | read_config(); |
749 | ||
d0da003d PR |
750 | init_remotes_hash(); |
751 | lookup.str = name; | |
752 | lookup.len = strlen(name); | |
753 | hashmap_entry_init(&lookup_entry, memhash(name, lookup.len)); | |
754 | ||
755 | return hashmap_get(&remotes_hash, &lookup_entry, &lookup) != NULL; | |
9a23ba33 FAG |
756 | } |
757 | ||
b42f6927 JS |
758 | int for_each_remote(each_remote_fn fn, void *priv) |
759 | { | |
760 | int i, result = 0; | |
761 | read_config(); | |
2d31347b | 762 | for (i = 0; i < remotes_nr && !result; i++) { |
b42f6927 JS |
763 | struct remote *r = remotes[i]; |
764 | if (!r) | |
765 | continue; | |
766 | if (!r->fetch) | |
46220ca1 JH |
767 | r->fetch = parse_fetch_refspec(r->fetch_refspec_nr, |
768 | r->fetch_refspec); | |
b42f6927 | 769 | if (!r->push) |
46220ca1 JH |
770 | r->push = parse_push_refspec(r->push_refspec_nr, |
771 | r->push_refspec); | |
b42f6927 JS |
772 | result = fn(r, priv); |
773 | } | |
774 | return result; | |
775 | } | |
776 | ||
df02ebda MH |
777 | static void handle_duplicate(struct ref *ref1, struct ref *ref2) |
778 | { | |
f096e6e8 MH |
779 | if (strcmp(ref1->name, ref2->name)) { |
780 | if (ref1->fetch_head_status != FETCH_HEAD_IGNORE && | |
781 | ref2->fetch_head_status != FETCH_HEAD_IGNORE) { | |
782 | die(_("Cannot fetch both %s and %s to %s"), | |
783 | ref1->name, ref2->name, ref2->peer_ref->name); | |
784 | } else if (ref1->fetch_head_status != FETCH_HEAD_IGNORE && | |
785 | ref2->fetch_head_status == FETCH_HEAD_IGNORE) { | |
786 | warning(_("%s usually tracks %s, not %s"), | |
787 | ref2->peer_ref->name, ref2->name, ref1->name); | |
788 | } else if (ref1->fetch_head_status == FETCH_HEAD_IGNORE && | |
789 | ref2->fetch_head_status == FETCH_HEAD_IGNORE) { | |
790 | die(_("%s tracks both %s and %s"), | |
791 | ref2->peer_ref->name, ref1->name, ref2->name); | |
792 | } else { | |
793 | /* | |
794 | * This last possibility doesn't occur because | |
795 | * FETCH_HEAD_IGNORE entries always appear at | |
796 | * the end of the list. | |
797 | */ | |
798 | die(_("Internal error")); | |
799 | } | |
800 | } | |
df02ebda MH |
801 | free(ref2->peer_ref); |
802 | free(ref2); | |
803 | } | |
804 | ||
b9afe665 | 805 | struct ref *ref_remove_duplicates(struct ref *ref_map) |
2467a4fa | 806 | { |
183113a5 | 807 | struct string_list refs = STRING_LIST_INIT_NODUP; |
b9afe665 MH |
808 | struct ref *retval = NULL; |
809 | struct ref **p = &retval; | |
73cf0822 | 810 | |
b9afe665 MH |
811 | while (ref_map) { |
812 | struct ref *ref = ref_map; | |
813 | ||
814 | ref_map = ref_map->next; | |
815 | ref->next = NULL; | |
73cf0822 | 816 | |
b9afe665 MH |
817 | if (!ref->peer_ref) { |
818 | *p = ref; | |
819 | p = &ref->next; | |
09ea1f8e | 820 | } else { |
b9afe665 MH |
821 | struct string_list_item *item = |
822 | string_list_insert(&refs, ref->peer_ref->name); | |
823 | ||
824 | if (item->util) { | |
825 | /* Entry already existed */ | |
df02ebda | 826 | handle_duplicate((struct ref *)item->util, ref); |
b9afe665 MH |
827 | } else { |
828 | *p = ref; | |
829 | p = &ref->next; | |
830 | item->util = ref; | |
831 | } | |
2467a4fa DB |
832 | } |
833 | } | |
b9afe665 | 834 | |
73cf0822 | 835 | string_list_clear(&refs, 0); |
b9afe665 | 836 | return retval; |
2467a4fa DB |
837 | } |
838 | ||
28b91f8a | 839 | int remote_has_url(struct remote *remote, const char *url) |
5d46c9d4 DB |
840 | { |
841 | int i; | |
28b91f8a SP |
842 | for (i = 0; i < remote->url_nr; i++) { |
843 | if (!strcmp(remote->url[i], url)) | |
5d46c9d4 DB |
844 | return 1; |
845 | } | |
846 | return 0; | |
847 | } | |
848 | ||
e928213f DB |
849 | static int match_name_with_pattern(const char *key, const char *name, |
850 | const char *value, char **result) | |
a3c84239 | 851 | { |
08fbdb30 DB |
852 | const char *kstar = strchr(key, '*'); |
853 | size_t klen; | |
abd2bde7 DB |
854 | size_t ksuffixlen; |
855 | size_t namelen; | |
08fbdb30 DB |
856 | int ret; |
857 | if (!kstar) | |
858 | die("Key '%s' of pattern had no '*'", key); | |
859 | klen = kstar - key; | |
abd2bde7 DB |
860 | ksuffixlen = strlen(kstar + 1); |
861 | namelen = strlen(name); | |
862 | ret = !strncmp(name, key, klen) && namelen >= klen + ksuffixlen && | |
863 | !memcmp(name + namelen - ksuffixlen, kstar + 1, ksuffixlen); | |
e928213f | 864 | if (ret && value) { |
07bfa575 | 865 | struct strbuf sb = STRBUF_INIT; |
08fbdb30 | 866 | const char *vstar = strchr(value, '*'); |
08fbdb30 DB |
867 | if (!vstar) |
868 | die("Value '%s' of pattern has no '*'", value); | |
07bfa575 RS |
869 | strbuf_add(&sb, value, vstar - value); |
870 | strbuf_add(&sb, name + klen, namelen - klen - ksuffixlen); | |
871 | strbuf_addstr(&sb, vstar + 1); | |
872 | *result = strbuf_detach(&sb, NULL); | |
e928213f | 873 | } |
a3c84239 DB |
874 | return ret; |
875 | } | |
876 | ||
e6f63712 CMN |
877 | static void query_refspecs_multiple(struct refspec *refs, int ref_count, struct refspec *query, struct string_list *results) |
878 | { | |
879 | int i; | |
880 | int find_src = !query->src; | |
881 | ||
882 | if (find_src && !query->dst) | |
883 | error("query_refspecs_multiple: need either src or dst"); | |
884 | ||
885 | for (i = 0; i < ref_count; i++) { | |
886 | struct refspec *refspec = &refs[i]; | |
887 | const char *key = find_src ? refspec->dst : refspec->src; | |
888 | const char *value = find_src ? refspec->src : refspec->dst; | |
889 | const char *needle = find_src ? query->dst : query->src; | |
890 | char **result = find_src ? &query->src : &query->dst; | |
891 | ||
892 | if (!refspec->dst) | |
893 | continue; | |
894 | if (refspec->pattern) { | |
895 | if (match_name_with_pattern(key, needle, value, result)) | |
896 | string_list_append_nodup(results, *result); | |
897 | } else if (!strcmp(needle, key)) { | |
898 | string_list_append(results, value); | |
899 | } | |
900 | } | |
901 | } | |
902 | ||
ca02465b | 903 | int query_refspecs(struct refspec *refs, int ref_count, struct refspec *query) |
72ff8943 DB |
904 | { |
905 | int i; | |
c500352e | 906 | int find_src = !query->src; |
049bff8f MH |
907 | const char *needle = find_src ? query->dst : query->src; |
908 | char **result = find_src ? &query->src : &query->dst; | |
72ff8943 | 909 | |
c500352e CMN |
910 | if (find_src && !query->dst) |
911 | return error("query_refspecs: need either src or dst"); | |
b42f6927 | 912 | |
c500352e CMN |
913 | for (i = 0; i < ref_count; i++) { |
914 | struct refspec *refspec = &refs[i]; | |
915 | const char *key = find_src ? refspec->dst : refspec->src; | |
916 | const char *value = find_src ? refspec->src : refspec->dst; | |
b42f6927 | 917 | |
c500352e | 918 | if (!refspec->dst) |
5d46c9d4 | 919 | continue; |
c500352e | 920 | if (refspec->pattern) { |
e928213f | 921 | if (match_name_with_pattern(key, needle, value, result)) { |
c500352e | 922 | query->force = refspec->force; |
5d46c9d4 DB |
923 | return 0; |
924 | } | |
b42f6927 JS |
925 | } else if (!strcmp(needle, key)) { |
926 | *result = xstrdup(value); | |
c500352e | 927 | query->force = refspec->force; |
b42f6927 | 928 | return 0; |
5d46c9d4 DB |
929 | } |
930 | } | |
5d46c9d4 DB |
931 | return -1; |
932 | } | |
933 | ||
c500352e CMN |
934 | char *apply_refspecs(struct refspec *refspecs, int nr_refspec, |
935 | const char *name) | |
936 | { | |
937 | struct refspec query; | |
938 | ||
939 | memset(&query, 0, sizeof(struct refspec)); | |
940 | query.src = (char *)name; | |
941 | ||
942 | if (query_refspecs(refspecs, nr_refspec, &query)) | |
943 | return NULL; | |
944 | ||
945 | return query.dst; | |
946 | } | |
947 | ||
948 | int remote_find_tracking(struct remote *remote, struct refspec *refspec) | |
949 | { | |
950 | return query_refspecs(remote->fetch, remote->fetch_refspec_nr, refspec); | |
951 | } | |
952 | ||
8009768e RS |
953 | static struct ref *alloc_ref_with_prefix(const char *prefix, size_t prefixlen, |
954 | const char *name) | |
955 | { | |
956 | size_t len = strlen(name); | |
957 | struct ref *ref = xcalloc(1, sizeof(struct ref) + prefixlen + len + 1); | |
958 | memcpy(ref->name, prefix, prefixlen); | |
959 | memcpy(ref->name + prefixlen, name, len); | |
960 | return ref; | |
961 | } | |
962 | ||
59c69c0c | 963 | struct ref *alloc_ref(const char *name) |
dfd255dd | 964 | { |
59c69c0c | 965 | return alloc_ref_with_prefix("", 0, name); |
737922aa KK |
966 | } |
967 | ||
59a57757 | 968 | struct ref *copy_ref(const struct ref *ref) |
d71ab174 | 969 | { |
7b3db095 JS |
970 | struct ref *cpy; |
971 | size_t len; | |
972 | if (!ref) | |
973 | return NULL; | |
974 | len = strlen(ref->name); | |
975 | cpy = xmalloc(sizeof(struct ref) + len + 1); | |
976 | memcpy(cpy, ref, sizeof(struct ref) + len + 1); | |
977 | cpy->next = NULL; | |
8c53f071 JK |
978 | cpy->symref = xstrdup_or_null(ref->symref); |
979 | cpy->remote_status = xstrdup_or_null(ref->remote_status); | |
7b3db095 JS |
980 | cpy->peer_ref = copy_ref(ref->peer_ref); |
981 | return cpy; | |
d71ab174 DB |
982 | } |
983 | ||
4577370e DB |
984 | struct ref *copy_ref_list(const struct ref *ref) |
985 | { | |
986 | struct ref *ret = NULL; | |
987 | struct ref **tail = &ret; | |
988 | while (ref) { | |
989 | *tail = copy_ref(ref); | |
990 | ref = ref->next; | |
991 | tail = &((*tail)->next); | |
992 | } | |
993 | return ret; | |
994 | } | |
995 | ||
697d7f5d | 996 | static void free_ref(struct ref *ref) |
be885d96 DB |
997 | { |
998 | if (!ref) | |
999 | return; | |
7b3db095 | 1000 | free_ref(ref->peer_ref); |
be885d96 DB |
1001 | free(ref->remote_status); |
1002 | free(ref->symref); | |
1003 | free(ref); | |
1004 | } | |
1005 | ||
dfd255dd DB |
1006 | void free_refs(struct ref *ref) |
1007 | { | |
1008 | struct ref *next; | |
1009 | while (ref) { | |
1010 | next = ref->next; | |
be885d96 | 1011 | free_ref(ref); |
dfd255dd DB |
1012 | ref = next; |
1013 | } | |
1014 | } | |
1015 | ||
ed81c76b JK |
1016 | int ref_compare_name(const void *va, const void *vb) |
1017 | { | |
1018 | const struct ref *a = va, *b = vb; | |
1019 | return strcmp(a->name, b->name); | |
1020 | } | |
1021 | ||
1022 | static void *ref_list_get_next(const void *a) | |
1023 | { | |
1024 | return ((const struct ref *)a)->next; | |
1025 | } | |
1026 | ||
1027 | static void ref_list_set_next(void *a, void *next) | |
1028 | { | |
1029 | ((struct ref *)a)->next = next; | |
1030 | } | |
1031 | ||
1032 | void sort_ref_list(struct ref **l, int (*cmp)(const void *, const void *)) | |
1033 | { | |
1034 | *l = llist_mergesort(*l, ref_list_get_next, ref_list_set_next, cmp); | |
1035 | } | |
1036 | ||
ca02465b JH |
1037 | int count_refspec_match(const char *pattern, |
1038 | struct ref *refs, | |
1039 | struct ref **matched_ref) | |
6b62816c DB |
1040 | { |
1041 | int patlen = strlen(pattern); | |
1042 | struct ref *matched_weak = NULL; | |
1043 | struct ref *matched = NULL; | |
1044 | int weak_match = 0; | |
1045 | int match = 0; | |
1046 | ||
1047 | for (weak_match = match = 0; refs; refs = refs->next) { | |
1048 | char *name = refs->name; | |
1049 | int namelen = strlen(name); | |
6b62816c | 1050 | |
54457fe5 | 1051 | if (!refname_match(pattern, name)) |
6b62816c DB |
1052 | continue; |
1053 | ||
1054 | /* A match is "weak" if it is with refs outside | |
1055 | * heads or tags, and did not specify the pattern | |
1056 | * in full (e.g. "refs/remotes/origin/master") or at | |
1057 | * least from the toplevel (e.g. "remotes/origin/master"); | |
1058 | * otherwise "git push $URL master" would result in | |
1059 | * ambiguity between remotes/origin/master and heads/master | |
1060 | * at the remote site. | |
1061 | */ | |
1062 | if (namelen != patlen && | |
1063 | patlen != namelen - 5 && | |
59556548 CC |
1064 | !starts_with(name, "refs/heads/") && |
1065 | !starts_with(name, "refs/tags/")) { | |
6b62816c DB |
1066 | /* We want to catch the case where only weak |
1067 | * matches are found and there are multiple | |
1068 | * matches, and where more than one strong | |
1069 | * matches are found, as ambiguous. One | |
1070 | * strong match with zero or more weak matches | |
1071 | * are acceptable as a unique match. | |
1072 | */ | |
1073 | matched_weak = refs; | |
1074 | weak_match++; | |
1075 | } | |
1076 | else { | |
1077 | matched = refs; | |
1078 | match++; | |
1079 | } | |
1080 | } | |
1081 | if (!matched) { | |
471fd3fe JK |
1082 | if (matched_ref) |
1083 | *matched_ref = matched_weak; | |
6b62816c DB |
1084 | return weak_match; |
1085 | } | |
1086 | else { | |
471fd3fe JK |
1087 | if (matched_ref) |
1088 | *matched_ref = matched; | |
6b62816c DB |
1089 | return match; |
1090 | } | |
1091 | } | |
1092 | ||
1d735267 | 1093 | static void tail_link_ref(struct ref *ref, struct ref ***tail) |
6b62816c DB |
1094 | { |
1095 | **tail = ref; | |
1d735267 DB |
1096 | while (ref->next) |
1097 | ref = ref->next; | |
6b62816c | 1098 | *tail = &ref->next; |
6b62816c DB |
1099 | } |
1100 | ||
67655246 FC |
1101 | static struct ref *alloc_delete_ref(void) |
1102 | { | |
1103 | struct ref *ref = alloc_ref("(delete)"); | |
1104 | hashclr(ref->new_sha1); | |
1105 | return ref; | |
1106 | } | |
1107 | ||
471fd3fe JK |
1108 | static int try_explicit_object_name(const char *name, |
1109 | struct ref **match) | |
6b62816c DB |
1110 | { |
1111 | unsigned char sha1[20]; | |
6b62816c | 1112 | |
471fd3fe JK |
1113 | if (!*name) { |
1114 | if (match) | |
1115 | *match = alloc_delete_ref(); | |
1116 | return 0; | |
1117 | } | |
1118 | ||
6b62816c | 1119 | if (get_sha1(name, sha1)) |
471fd3fe JK |
1120 | return -1; |
1121 | ||
1122 | if (match) { | |
1123 | *match = alloc_ref(name); | |
1124 | hashcpy((*match)->new_sha1, sha1); | |
1125 | } | |
1126 | return 0; | |
6b62816c DB |
1127 | } |
1128 | ||
1d735267 | 1129 | static struct ref *make_linked_ref(const char *name, struct ref ***tail) |
6b62816c | 1130 | { |
59c69c0c | 1131 | struct ref *ret = alloc_ref(name); |
1d735267 DB |
1132 | tail_link_ref(ret, tail); |
1133 | return ret; | |
163f0ee5 | 1134 | } |
8558fd9e | 1135 | |
f8aae120 JK |
1136 | static char *guess_ref(const char *name, struct ref *peer) |
1137 | { | |
1138 | struct strbuf buf = STRBUF_INIT; | |
1139 | unsigned char sha1[20]; | |
1140 | ||
7695d118 RS |
1141 | const char *r = resolve_ref_unsafe(peer->name, RESOLVE_REF_READING, |
1142 | sha1, NULL); | |
f8aae120 JK |
1143 | if (!r) |
1144 | return NULL; | |
1145 | ||
59556548 | 1146 | if (starts_with(r, "refs/heads/")) |
f8aae120 | 1147 | strbuf_addstr(&buf, "refs/heads/"); |
59556548 | 1148 | else if (starts_with(r, "refs/tags/")) |
f8aae120 JK |
1149 | strbuf_addstr(&buf, "refs/tags/"); |
1150 | else | |
1151 | return NULL; | |
1152 | ||
1153 | strbuf_addstr(&buf, name); | |
1154 | return strbuf_detach(&buf, NULL); | |
1155 | } | |
1156 | ||
f7ade3d3 JK |
1157 | static int match_explicit_lhs(struct ref *src, |
1158 | struct refspec *rs, | |
1159 | struct ref **match, | |
1160 | int *allocated_match) | |
1161 | { | |
1162 | switch (count_refspec_match(rs->src, src, match)) { | |
1163 | case 1: | |
471fd3fe JK |
1164 | if (allocated_match) |
1165 | *allocated_match = 0; | |
f7ade3d3 JK |
1166 | return 0; |
1167 | case 0: | |
1168 | /* The source could be in the get_sha1() format | |
1169 | * not a reference name. :refs/other is a | |
1170 | * way to delete 'other' ref at the remote end. | |
1171 | */ | |
471fd3fe | 1172 | if (try_explicit_object_name(rs->src, match) < 0) |
f7ade3d3 | 1173 | return error("src refspec %s does not match any.", rs->src); |
471fd3fe JK |
1174 | if (allocated_match) |
1175 | *allocated_match = 1; | |
f7ade3d3 JK |
1176 | return 0; |
1177 | default: | |
1178 | return error("src refspec %s matches more than one.", rs->src); | |
1179 | } | |
1180 | } | |
1181 | ||
54a8ad92 JH |
1182 | static int match_explicit(struct ref *src, struct ref *dst, |
1183 | struct ref ***dst_tail, | |
9a7bbd1d | 1184 | struct refspec *rs) |
6b62816c | 1185 | { |
54a8ad92 | 1186 | struct ref *matched_src, *matched_dst; |
f7ade3d3 | 1187 | int allocated_src; |
8558fd9e | 1188 | |
54a8ad92 | 1189 | const char *dst_value = rs->dst; |
f8aae120 | 1190 | char *dst_guess; |
6b62816c | 1191 | |
a83619d6 | 1192 | if (rs->pattern || rs->matching) |
9a7bbd1d | 1193 | return 0; |
8558fd9e | 1194 | |
54a8ad92 | 1195 | matched_src = matched_dst = NULL; |
f7ade3d3 JK |
1196 | if (match_explicit_lhs(src, rs, &matched_src, &allocated_src) < 0) |
1197 | return -1; | |
3c8b7df1 | 1198 | |
4491e62a | 1199 | if (!dst_value) { |
9f0ea7e8 DB |
1200 | unsigned char sha1[20]; |
1201 | int flag; | |
1202 | ||
7695d118 RS |
1203 | dst_value = resolve_ref_unsafe(matched_src->name, |
1204 | RESOLVE_REF_READING, | |
1205 | sha1, &flag); | |
9f0ea7e8 DB |
1206 | if (!dst_value || |
1207 | ((flag & REF_ISSYMREF) && | |
59556548 | 1208 | !starts_with(dst_value, "refs/heads/"))) |
9f0ea7e8 DB |
1209 | die("%s cannot be resolved to branch.", |
1210 | matched_src->name); | |
4491e62a | 1211 | } |
3c8b7df1 | 1212 | |
54a8ad92 JH |
1213 | switch (count_refspec_match(dst_value, dst, &matched_dst)) { |
1214 | case 1: | |
1215 | break; | |
1216 | case 0: | |
50e19a83 | 1217 | if (starts_with(dst_value, "refs/")) |
1d735267 | 1218 | matched_dst = make_linked_ref(dst_value, dst_tail); |
5742c82b JK |
1219 | else if (is_null_sha1(matched_src->new_sha1)) |
1220 | error("unable to delete '%s': remote ref does not exist", | |
1221 | dst_value); | |
eeefa7c9 | 1222 | else if ((dst_guess = guess_ref(dst_value, matched_src))) |
f8aae120 | 1223 | matched_dst = make_linked_ref(dst_guess, dst_tail); |
3c8b7df1 | 1224 | else |
f8aae120 JK |
1225 | error("unable to push to unqualified destination: %s\n" |
1226 | "The destination refspec neither matches an " | |
1227 | "existing ref on the remote nor\n" | |
1228 | "begins with refs/, and we are unable to " | |
1229 | "guess a prefix based on the source ref.", | |
1230 | dst_value); | |
54a8ad92 JH |
1231 | break; |
1232 | default: | |
3c8b7df1 | 1233 | matched_dst = NULL; |
54a8ad92 JH |
1234 | error("dst refspec %s matches more than one.", |
1235 | dst_value); | |
1236 | break; | |
1237 | } | |
9a7bbd1d JK |
1238 | if (!matched_dst) |
1239 | return -1; | |
1240 | if (matched_dst->peer_ref) | |
1241 | return error("dst ref %s receives from more than one src.", | |
54a8ad92 | 1242 | matched_dst->name); |
54a8ad92 | 1243 | else { |
f7ade3d3 JK |
1244 | matched_dst->peer_ref = allocated_src ? |
1245 | matched_src : | |
1246 | copy_ref(matched_src); | |
54a8ad92 | 1247 | matched_dst->force = rs->force; |
6b62816c | 1248 | } |
9a7bbd1d | 1249 | return 0; |
54a8ad92 JH |
1250 | } |
1251 | ||
1252 | static int match_explicit_refs(struct ref *src, struct ref *dst, | |
1253 | struct ref ***dst_tail, struct refspec *rs, | |
1254 | int rs_nr) | |
1255 | { | |
1256 | int i, errs; | |
1257 | for (i = errs = 0; i < rs_nr; i++) | |
9a7bbd1d JK |
1258 | errs += match_explicit(src, dst, dst_tail, &rs[i]); |
1259 | return errs; | |
6b62816c DB |
1260 | } |
1261 | ||
db70a04c | 1262 | static char *get_ref_match(const struct refspec *rs, int rs_nr, const struct ref *ref, |
6ddba5e2 | 1263 | int send_mirror, int direction, const struct refspec **ret_pat) |
8558fd9e | 1264 | { |
db70a04c FC |
1265 | const struct refspec *pat; |
1266 | char *name; | |
8558fd9e | 1267 | int i; |
a83619d6 | 1268 | int matching_refs = -1; |
8558fd9e | 1269 | for (i = 0; i < rs_nr; i++) { |
a83619d6 PB |
1270 | if (rs[i].matching && |
1271 | (matching_refs == -1 || rs[i].force)) { | |
1272 | matching_refs = i; | |
1273 | continue; | |
1274 | } | |
1275 | ||
db70a04c FC |
1276 | if (rs[i].pattern) { |
1277 | const char *dst_side = rs[i].dst ? rs[i].dst : rs[i].src; | |
6ddba5e2 FC |
1278 | int match; |
1279 | if (direction == FROM_SRC) | |
1280 | match = match_name_with_pattern(rs[i].src, ref->name, dst_side, &name); | |
1281 | else | |
1282 | match = match_name_with_pattern(dst_side, ref->name, rs[i].src, &name); | |
1283 | if (match) { | |
db70a04c FC |
1284 | matching_refs = i; |
1285 | break; | |
1286 | } | |
1287 | } | |
8558fd9e | 1288 | } |
db70a04c | 1289 | if (matching_refs == -1) |
a83619d6 | 1290 | return NULL; |
db70a04c FC |
1291 | |
1292 | pat = rs + matching_refs; | |
1293 | if (pat->matching) { | |
1294 | /* | |
1295 | * "matching refs"; traditionally we pushed everything | |
1296 | * including refs outside refs/heads/ hierarchy, but | |
1297 | * that does not make much sense these days. | |
1298 | */ | |
59556548 | 1299 | if (!send_mirror && !starts_with(ref->name, "refs/heads/")) |
db70a04c FC |
1300 | return NULL; |
1301 | name = xstrdup(ref->name); | |
1302 | } | |
1303 | if (ret_pat) | |
1304 | *ret_pat = pat; | |
1305 | return name; | |
8558fd9e DB |
1306 | } |
1307 | ||
6d2bf96e CB |
1308 | static struct ref **tail_ref(struct ref **head) |
1309 | { | |
1310 | struct ref **tail = head; | |
1311 | while (*tail) | |
1312 | tail = &((*tail)->next); | |
1313 | return tail; | |
1314 | } | |
1315 | ||
c2aba155 JH |
1316 | struct tips { |
1317 | struct commit **tip; | |
1318 | int nr, alloc; | |
1319 | }; | |
1320 | ||
1321 | static void add_to_tips(struct tips *tips, const unsigned char *sha1) | |
1322 | { | |
1323 | struct commit *commit; | |
1324 | ||
1325 | if (is_null_sha1(sha1)) | |
1326 | return; | |
1327 | commit = lookup_commit_reference_gently(sha1, 1); | |
1328 | if (!commit || (commit->object.flags & TMP_MARK)) | |
1329 | return; | |
1330 | commit->object.flags |= TMP_MARK; | |
1331 | ALLOC_GROW(tips->tip, tips->nr + 1, tips->alloc); | |
1332 | tips->tip[tips->nr++] = commit; | |
1333 | } | |
1334 | ||
1335 | static void add_missing_tags(struct ref *src, struct ref **dst, struct ref ***dst_tail) | |
1336 | { | |
1337 | struct string_list dst_tag = STRING_LIST_INIT_NODUP; | |
1338 | struct string_list src_tag = STRING_LIST_INIT_NODUP; | |
1339 | struct string_list_item *item; | |
1340 | struct ref *ref; | |
1341 | struct tips sent_tips; | |
1342 | ||
1343 | /* | |
1344 | * Collect everything we know they would have at the end of | |
1345 | * this push, and collect all tags they have. | |
1346 | */ | |
1347 | memset(&sent_tips, 0, sizeof(sent_tips)); | |
1348 | for (ref = *dst; ref; ref = ref->next) { | |
1349 | if (ref->peer_ref && | |
1350 | !is_null_sha1(ref->peer_ref->new_sha1)) | |
1351 | add_to_tips(&sent_tips, ref->peer_ref->new_sha1); | |
1352 | else | |
1353 | add_to_tips(&sent_tips, ref->old_sha1); | |
59556548 | 1354 | if (starts_with(ref->name, "refs/tags/")) |
c2aba155 JH |
1355 | string_list_append(&dst_tag, ref->name); |
1356 | } | |
1357 | clear_commit_marks_many(sent_tips.nr, sent_tips.tip, TMP_MARK); | |
1358 | ||
3383e199 | 1359 | string_list_sort(&dst_tag); |
c2aba155 JH |
1360 | |
1361 | /* Collect tags they do not have. */ | |
1362 | for (ref = src; ref; ref = ref->next) { | |
59556548 | 1363 | if (!starts_with(ref->name, "refs/tags/")) |
c2aba155 JH |
1364 | continue; /* not a tag */ |
1365 | if (string_list_has_string(&dst_tag, ref->name)) | |
1366 | continue; /* they already have it */ | |
1367 | if (sha1_object_info(ref->new_sha1, NULL) != OBJ_TAG) | |
1368 | continue; /* be conservative */ | |
1369 | item = string_list_append(&src_tag, ref->name); | |
1370 | item->util = ref; | |
1371 | } | |
1372 | string_list_clear(&dst_tag, 0); | |
1373 | ||
1374 | /* | |
1375 | * At this point, src_tag lists tags that are missing from | |
1376 | * dst, and sent_tips lists the tips we are pushing or those | |
1377 | * that we know they already have. An element in the src_tag | |
1378 | * that is an ancestor of any of the sent_tips needs to be | |
1379 | * sent to the other side. | |
1380 | */ | |
1381 | if (sent_tips.nr) { | |
1382 | for_each_string_list_item(item, &src_tag) { | |
1383 | struct ref *ref = item->util; | |
1384 | struct ref *dst_ref; | |
1385 | struct commit *commit; | |
1386 | ||
1387 | if (is_null_sha1(ref->new_sha1)) | |
1388 | continue; | |
1389 | commit = lookup_commit_reference_gently(ref->new_sha1, 1); | |
1390 | if (!commit) | |
1391 | /* not pushing a commit, which is not an error */ | |
1392 | continue; | |
1393 | ||
1394 | /* | |
1395 | * Is this tag, which they do not have, reachable from | |
1396 | * any of the commits we are sending? | |
1397 | */ | |
1398 | if (!in_merge_bases_many(commit, sent_tips.nr, sent_tips.tip)) | |
1399 | continue; | |
1400 | ||
1401 | /* Add it in */ | |
1402 | dst_ref = make_linked_ref(ref->name, dst_tail); | |
1403 | hashcpy(dst_ref->new_sha1, ref->new_sha1); | |
1404 | dst_ref->peer_ref = copy_ref(ref); | |
1405 | } | |
1406 | } | |
1407 | string_list_clear(&src_tag, 0); | |
1408 | free(sent_tips.tip); | |
1409 | } | |
1410 | ||
47a59185 JH |
1411 | struct ref *find_ref_by_name(const struct ref *list, const char *name) |
1412 | { | |
1413 | for ( ; list; list = list->next) | |
1414 | if (!strcmp(list->name, name)) | |
1415 | return (struct ref *)list; | |
1416 | return NULL; | |
1417 | } | |
1418 | ||
f1bd15ab BC |
1419 | static void prepare_ref_index(struct string_list *ref_index, struct ref *ref) |
1420 | { | |
1421 | for ( ; ref; ref = ref->next) | |
1422 | string_list_append_nodup(ref_index, ref->name)->util = ref; | |
1423 | ||
3383e199 | 1424 | string_list_sort(ref_index); |
f1bd15ab BC |
1425 | } |
1426 | ||
ba928c13 JK |
1427 | /* |
1428 | * Given only the set of local refs, sanity-check the set of push | |
1429 | * refspecs. We can't catch all errors that match_push_refs would, | |
1430 | * but we can catch some errors early before even talking to the | |
1431 | * remote side. | |
1432 | */ | |
1433 | int check_push_refs(struct ref *src, int nr_refspec, const char **refspec_names) | |
1434 | { | |
1435 | struct refspec *refspec = parse_push_refspec(nr_refspec, refspec_names); | |
1436 | int ret = 0; | |
1437 | int i; | |
1438 | ||
1439 | for (i = 0; i < nr_refspec; i++) { | |
1440 | struct refspec *rs = refspec + i; | |
1441 | ||
1442 | if (rs->pattern || rs->matching) | |
1443 | continue; | |
1444 | ||
1445 | ret |= match_explicit_lhs(src, rs, NULL, NULL); | |
1446 | } | |
1447 | ||
1448 | free_refspec(nr_refspec, refspec); | |
1449 | return ret; | |
1450 | } | |
1451 | ||
54a8ad92 | 1452 | /* |
29753cdd JH |
1453 | * Given the set of refs the local repository has, the set of refs the |
1454 | * remote repository has, and the refspec used for push, determine | |
1455 | * what remote refs we will update and with what value by setting | |
1456 | * peer_ref (which object is being pushed) and force (if the push is | |
1457 | * forced) in elements of "dst". The function may add new elements to | |
1458 | * dst (e.g. pushing to a new branch, done in match_explicit_refs). | |
54a8ad92 | 1459 | */ |
29753cdd JH |
1460 | int match_push_refs(struct ref *src, struct ref **dst, |
1461 | int nr_refspec, const char **refspec, int flags) | |
6b62816c | 1462 | { |
a83619d6 | 1463 | struct refspec *rs; |
28b9d6e5 AW |
1464 | int send_all = flags & MATCH_REFS_ALL; |
1465 | int send_mirror = flags & MATCH_REFS_MIRROR; | |
6ddba5e2 | 1466 | int send_prune = flags & MATCH_REFS_PRUNE; |
5f48cb95 | 1467 | int errs; |
2af202be | 1468 | static const char *default_refspec[] = { ":", NULL }; |
b1d8b1f3 | 1469 | struct ref *ref, **dst_tail = tail_ref(dst); |
f1bd15ab | 1470 | struct string_list dst_ref_index = STRING_LIST_INIT_NODUP; |
6b62816c | 1471 | |
a83619d6 PB |
1472 | if (!nr_refspec) { |
1473 | nr_refspec = 1; | |
1474 | refspec = default_refspec; | |
1475 | } | |
1476 | rs = parse_push_refspec(nr_refspec, (const char **) refspec); | |
6d2bf96e | 1477 | errs = match_explicit_refs(src, *dst, &dst_tail, rs, nr_refspec); |
6b62816c DB |
1478 | |
1479 | /* pick the remainder */ | |
b1d8b1f3 | 1480 | for (ref = src; ref; ref = ref->next) { |
f1bd15ab | 1481 | struct string_list_item *dst_item; |
6b62816c | 1482 | struct ref *dst_peer; |
6e66bf3c AR |
1483 | const struct refspec *pat = NULL; |
1484 | char *dst_name; | |
db70a04c | 1485 | |
6ddba5e2 | 1486 | dst_name = get_ref_match(rs, nr_refspec, ref, send_mirror, FROM_SRC, &pat); |
db70a04c | 1487 | if (!dst_name) |
a83619d6 PB |
1488 | continue; |
1489 | ||
f1bd15ab BC |
1490 | if (!dst_ref_index.nr) |
1491 | prepare_ref_index(&dst_ref_index, *dst); | |
1492 | ||
1493 | dst_item = string_list_lookup(&dst_ref_index, dst_name); | |
1494 | dst_peer = dst_item ? dst_item->util : NULL; | |
a83619d6 PB |
1495 | if (dst_peer) { |
1496 | if (dst_peer->peer_ref) | |
1497 | /* We're already sending something to this ref. */ | |
1498 | goto free_name; | |
a83619d6 PB |
1499 | } else { |
1500 | if (pat->matching && !(send_all || send_mirror)) | |
1501 | /* | |
1502 | * Remote doesn't have it, and we have no | |
1503 | * explicit pattern, and we don't have | |
01689909 | 1504 | * --all or --mirror. |
a83619d6 PB |
1505 | */ |
1506 | goto free_name; | |
28b9d6e5 | 1507 | |
6b62816c | 1508 | /* Create a new one and link it */ |
6d2bf96e | 1509 | dst_peer = make_linked_ref(dst_name, &dst_tail); |
b1d8b1f3 | 1510 | hashcpy(dst_peer->new_sha1, ref->new_sha1); |
f1bd15ab BC |
1511 | string_list_insert(&dst_ref_index, |
1512 | dst_peer->name)->util = dst_peer; | |
6b62816c | 1513 | } |
b1d8b1f3 | 1514 | dst_peer->peer_ref = copy_ref(ref); |
a83619d6 | 1515 | dst_peer->force = pat->force; |
6e66bf3c AR |
1516 | free_name: |
1517 | free(dst_name); | |
6b62816c | 1518 | } |
c2aba155 | 1519 | |
f1bd15ab BC |
1520 | string_list_clear(&dst_ref_index, 0); |
1521 | ||
c2aba155 JH |
1522 | if (flags & MATCH_REFS_FOLLOW_TAGS) |
1523 | add_missing_tags(src, dst, &dst_tail); | |
1524 | ||
6ddba5e2 | 1525 | if (send_prune) { |
f1bd15ab | 1526 | struct string_list src_ref_index = STRING_LIST_INIT_NODUP; |
6ddba5e2 FC |
1527 | /* check for missing refs on the remote */ |
1528 | for (ref = *dst; ref; ref = ref->next) { | |
1529 | char *src_name; | |
1530 | ||
1531 | if (ref->peer_ref) | |
1532 | /* We're already sending something to this ref. */ | |
1533 | continue; | |
1534 | ||
1535 | src_name = get_ref_match(rs, nr_refspec, ref, send_mirror, FROM_DST, NULL); | |
1536 | if (src_name) { | |
f1bd15ab BC |
1537 | if (!src_ref_index.nr) |
1538 | prepare_ref_index(&src_ref_index, src); | |
1539 | if (!string_list_has_string(&src_ref_index, | |
1540 | src_name)) | |
6ddba5e2 FC |
1541 | ref->peer_ref = alloc_delete_ref(); |
1542 | free(src_name); | |
1543 | } | |
1544 | } | |
f1bd15ab | 1545 | string_list_clear(&src_ref_index, 0); |
6ddba5e2 | 1546 | } |
5f48cb95 JS |
1547 | if (errs) |
1548 | return -1; | |
6b62816c DB |
1549 | return 0; |
1550 | } | |
cf818348 | 1551 | |
20e8b465 | 1552 | void set_ref_status_for_push(struct ref *remote_refs, int send_mirror, |
631b5ef2 | 1553 | int force_update) |
20e8b465 TRC |
1554 | { |
1555 | struct ref *ref; | |
1556 | ||
1557 | for (ref = remote_refs; ref; ref = ref->next) { | |
8c5f6f71 | 1558 | int force_ref_update = ref->force || force_update; |
631b5ef2 | 1559 | int reject_reason = 0; |
8c5f6f71 | 1560 | |
20e8b465 TRC |
1561 | if (ref->peer_ref) |
1562 | hashcpy(ref->new_sha1, ref->peer_ref->new_sha1); | |
1563 | else if (!send_mirror) | |
1564 | continue; | |
1565 | ||
1566 | ref->deletion = is_null_sha1(ref->new_sha1); | |
1567 | if (!ref->deletion && | |
1568 | !hashcmp(ref->old_sha1, ref->new_sha1)) { | |
1569 | ref->status = REF_STATUS_UPTODATE; | |
1570 | continue; | |
1571 | } | |
1572 | ||
a272b289 | 1573 | /* |
631b5ef2 JH |
1574 | * Bypass the usual "must fast-forward" check but |
1575 | * replace it with a weaker "the old value must be | |
1576 | * this value we observed". If the remote ref has | |
1577 | * moved and is now different from what we expect, | |
1578 | * reject any push. | |
1579 | * | |
1580 | * It also is an error if the user told us to check | |
1581 | * with the remote-tracking branch to find the value | |
1582 | * to expect, but we did not have such a tracking | |
1583 | * branch. | |
1584 | */ | |
1585 | if (ref->expect_old_sha1) { | |
1586 | if (ref->expect_old_no_trackback || | |
1587 | hashcmp(ref->old_sha1, ref->old_sha1_expect)) | |
1588 | reject_reason = REF_STATUS_REJECT_STALE; | |
1589 | } | |
1590 | ||
1591 | /* | |
1592 | * The usual "must fast-forward" rules. | |
1593 | * | |
256b9d70 JH |
1594 | * Decide whether an individual refspec A:B can be |
1595 | * pushed. The push will succeed if any of the | |
1596 | * following are true: | |
20e8b465 | 1597 | * |
a272b289 | 1598 | * (1) the remote reference B does not exist |
20e8b465 | 1599 | * |
a272b289 CR |
1600 | * (2) the remote reference B is being removed (i.e., |
1601 | * pushing :B where no source is specified) | |
20e8b465 | 1602 | * |
256b9d70 JH |
1603 | * (3) the destination is not under refs/tags/, and |
1604 | * if the old and new value is a commit, the new | |
1605 | * is a descendant of the old. | |
20e8b465 | 1606 | * |
a272b289 CR |
1607 | * (4) it is forced using the +A:B notation, or by |
1608 | * passing the --force argument | |
20e8b465 TRC |
1609 | */ |
1610 | ||
631b5ef2 | 1611 | else if (!ref->deletion && !is_null_sha1(ref->old_sha1)) { |
59556548 | 1612 | if (starts_with(ref->name, "refs/tags/")) |
631b5ef2 | 1613 | reject_reason = REF_STATUS_REJECT_ALREADY_EXISTS; |
75e5c0dc | 1614 | else if (!has_sha1_file(ref->old_sha1)) |
631b5ef2 | 1615 | reject_reason = REF_STATUS_REJECT_FETCH_FIRST; |
75e5c0dc JH |
1616 | else if (!lookup_commit_reference_gently(ref->old_sha1, 1) || |
1617 | !lookup_commit_reference_gently(ref->new_sha1, 1)) | |
631b5ef2 | 1618 | reject_reason = REF_STATUS_REJECT_NEEDS_FORCE; |
75e5c0dc | 1619 | else if (!ref_newer(ref->new_sha1, ref->old_sha1)) |
631b5ef2 | 1620 | reject_reason = REF_STATUS_REJECT_NONFASTFORWARD; |
20e8b465 | 1621 | } |
631b5ef2 JH |
1622 | |
1623 | /* | |
1624 | * "--force" will defeat any rejection implemented | |
1625 | * by the rules above. | |
1626 | */ | |
1627 | if (!force_ref_update) | |
1628 | ref->status = reject_reason; | |
1629 | else if (reject_reason) | |
1630 | ref->forced_update = 1; | |
20e8b465 TRC |
1631 | } |
1632 | } | |
1633 | ||
05e73682 JH |
1634 | static void set_merge(struct branch *ret) |
1635 | { | |
1636 | char *ref; | |
1637 | unsigned char sha1[20]; | |
1638 | int i; | |
1639 | ||
1640 | ret->merge = xcalloc(ret->merge_nr, sizeof(*ret->merge)); | |
1641 | for (i = 0; i < ret->merge_nr; i++) { | |
1642 | ret->merge[i] = xcalloc(1, sizeof(**ret->merge)); | |
1643 | ret->merge[i]->src = xstrdup(ret->merge_name[i]); | |
1644 | if (!remote_find_tracking(ret->remote, ret->merge[i]) || | |
1645 | strcmp(ret->remote_name, ".")) | |
1646 | continue; | |
1647 | if (dwim_ref(ret->merge_name[i], strlen(ret->merge_name[i]), | |
1648 | sha1, &ref) == 1) | |
1649 | ret->merge[i]->dst = ref; | |
1650 | else | |
1651 | ret->merge[i]->dst = xstrdup(ret->merge_name[i]); | |
1652 | } | |
1653 | } | |
1654 | ||
cf818348 DB |
1655 | struct branch *branch_get(const char *name) |
1656 | { | |
1657 | struct branch *ret; | |
1658 | ||
1659 | read_config(); | |
1660 | if (!name || !*name || !strcmp(name, "HEAD")) | |
1661 | ret = current_branch; | |
1662 | else | |
1663 | ret = make_branch(name, 0); | |
1664 | if (ret && ret->remote_name) { | |
1665 | ret->remote = remote_get(ret->remote_name); | |
05e73682 JH |
1666 | if (ret->merge_nr) |
1667 | set_merge(ret); | |
cf818348 DB |
1668 | } |
1669 | return ret; | |
1670 | } | |
1671 | ||
1672 | int branch_has_merge_config(struct branch *branch) | |
1673 | { | |
1674 | return branch && !!branch->merge; | |
1675 | } | |
1676 | ||
85682c19 SP |
1677 | int branch_merge_matches(struct branch *branch, |
1678 | int i, | |
1679 | const char *refname) | |
cf818348 | 1680 | { |
85682c19 | 1681 | if (!branch || i < 0 || i >= branch->merge_nr) |
cf818348 | 1682 | return 0; |
54457fe5 | 1683 | return refname_match(branch->merge[i]->src, refname); |
cf818348 | 1684 | } |
d71ab174 | 1685 | |
f8fb971e JH |
1686 | static int ignore_symref_update(const char *refname) |
1687 | { | |
1688 | unsigned char sha1[20]; | |
1689 | int flag; | |
1690 | ||
7695d118 | 1691 | if (!resolve_ref_unsafe(refname, 0, sha1, &flag)) |
f8fb971e JH |
1692 | return 0; /* non-existing refs are OK */ |
1693 | return (flag & REF_ISSYMREF); | |
1694 | } | |
1695 | ||
f166db26 MH |
1696 | /* |
1697 | * Create and return a list of (struct ref) consisting of copies of | |
1698 | * each remote_ref that matches refspec. refspec must be a pattern. | |
1699 | * Fill in the copies' peer_ref to describe the local tracking refs to | |
1700 | * which they map. Omit any references that would map to an existing | |
1701 | * local symbolic ref. | |
1702 | */ | |
4577370e | 1703 | static struct ref *get_expanded_map(const struct ref *remote_refs, |
d71ab174 DB |
1704 | const struct refspec *refspec) |
1705 | { | |
4577370e | 1706 | const struct ref *ref; |
d71ab174 DB |
1707 | struct ref *ret = NULL; |
1708 | struct ref **tail = &ret; | |
1709 | ||
d71ab174 | 1710 | for (ref = remote_refs; ref; ref = ref->next) { |
e31a17f7 MH |
1711 | char *expn_name = NULL; |
1712 | ||
d71ab174 DB |
1713 | if (strchr(ref->name, '^')) |
1714 | continue; /* a dereference item */ | |
e928213f | 1715 | if (match_name_with_pattern(refspec->src, ref->name, |
f8fb971e JH |
1716 | refspec->dst, &expn_name) && |
1717 | !ignore_symref_update(expn_name)) { | |
d71ab174 | 1718 | struct ref *cpy = copy_ref(ref); |
d71ab174 | 1719 | |
e928213f | 1720 | cpy->peer_ref = alloc_ref(expn_name); |
d71ab174 DB |
1721 | if (refspec->force) |
1722 | cpy->peer_ref->force = 1; | |
1723 | *tail = cpy; | |
1724 | tail = &cpy->next; | |
1725 | } | |
e31a17f7 | 1726 | free(expn_name); |
d71ab174 DB |
1727 | } |
1728 | ||
1729 | return ret; | |
1730 | } | |
1731 | ||
4577370e | 1732 | static const struct ref *find_ref_by_name_abbrev(const struct ref *refs, const char *name) |
d71ab174 | 1733 | { |
4577370e | 1734 | const struct ref *ref; |
d71ab174 | 1735 | for (ref = refs; ref; ref = ref->next) { |
54457fe5 | 1736 | if (refname_match(name, ref->name)) |
d71ab174 DB |
1737 | return ref; |
1738 | } | |
1739 | return NULL; | |
1740 | } | |
1741 | ||
4577370e | 1742 | struct ref *get_remote_ref(const struct ref *remote_refs, const char *name) |
d71ab174 | 1743 | { |
4577370e | 1744 | const struct ref *ref = find_ref_by_name_abbrev(remote_refs, name); |
d71ab174 DB |
1745 | |
1746 | if (!ref) | |
9ad7c5ae | 1747 | return NULL; |
d71ab174 DB |
1748 | |
1749 | return copy_ref(ref); | |
1750 | } | |
1751 | ||
1752 | static struct ref *get_local_ref(const char *name) | |
1753 | { | |
3eb96997 | 1754 | if (!name || name[0] == '\0') |
d71ab174 DB |
1755 | return NULL; |
1756 | ||
59556548 | 1757 | if (starts_with(name, "refs/")) |
59c69c0c | 1758 | return alloc_ref(name); |
d71ab174 | 1759 | |
59556548 CC |
1760 | if (starts_with(name, "heads/") || |
1761 | starts_with(name, "tags/") || | |
1762 | starts_with(name, "remotes/")) | |
8009768e | 1763 | return alloc_ref_with_prefix("refs/", 5, name); |
d71ab174 | 1764 | |
8009768e | 1765 | return alloc_ref_with_prefix("refs/heads/", 11, name); |
d71ab174 DB |
1766 | } |
1767 | ||
4577370e | 1768 | int get_fetch_map(const struct ref *remote_refs, |
d71ab174 | 1769 | const struct refspec *refspec, |
9ad7c5ae JH |
1770 | struct ref ***tail, |
1771 | int missing_ok) | |
d71ab174 | 1772 | { |
ef00d150 | 1773 | struct ref *ref_map, **rmp; |
d71ab174 DB |
1774 | |
1775 | if (refspec->pattern) { | |
1776 | ref_map = get_expanded_map(remote_refs, refspec); | |
1777 | } else { | |
9ad7c5ae JH |
1778 | const char *name = refspec->src[0] ? refspec->src : "HEAD"; |
1779 | ||
6e7b66ee JH |
1780 | if (refspec->exact_sha1) { |
1781 | ref_map = alloc_ref(name); | |
1782 | get_sha1_hex(name, ref_map->old_sha1); | |
1783 | } else { | |
1784 | ref_map = get_remote_ref(remote_refs, name); | |
1785 | } | |
9ad7c5ae JH |
1786 | if (!missing_ok && !ref_map) |
1787 | die("Couldn't find remote ref %s", name); | |
1788 | if (ref_map) { | |
1789 | ref_map->peer_ref = get_local_ref(refspec->dst); | |
1790 | if (ref_map->peer_ref && refspec->force) | |
1791 | ref_map->peer_ref->force = 1; | |
1792 | } | |
d71ab174 DB |
1793 | } |
1794 | ||
ef00d150 DB |
1795 | for (rmp = &ref_map; *rmp; ) { |
1796 | if ((*rmp)->peer_ref) { | |
59556548 | 1797 | if (!starts_with((*rmp)->peer_ref->name, "refs/") || |
5c08c1f2 | 1798 | check_refname_format((*rmp)->peer_ref->name, 0)) { |
ef00d150 DB |
1799 | struct ref *ignore = *rmp; |
1800 | error("* Ignoring funny ref '%s' locally", | |
1801 | (*rmp)->peer_ref->name); | |
1802 | *rmp = (*rmp)->next; | |
1803 | free(ignore->peer_ref); | |
1804 | free(ignore); | |
1805 | continue; | |
1806 | } | |
1807 | } | |
1808 | rmp = &((*rmp)->next); | |
d71ab174 DB |
1809 | } |
1810 | ||
8f70a765 AR |
1811 | if (ref_map) |
1812 | tail_link_ref(ref_map, tail); | |
d71ab174 DB |
1813 | |
1814 | return 0; | |
1815 | } | |
be885d96 DB |
1816 | |
1817 | int resolve_remote_symref(struct ref *ref, struct ref *list) | |
1818 | { | |
1819 | if (!ref->symref) | |
1820 | return 0; | |
1821 | for (; list; list = list->next) | |
1822 | if (!strcmp(ref->symref, list->name)) { | |
1823 | hashcpy(ref->old_sha1, list->old_sha1); | |
1824 | return 0; | |
1825 | } | |
1826 | return 1; | |
1827 | } | |
6d21bf96 | 1828 | |
ec8452d5 JS |
1829 | static void unmark_and_free(struct commit_list *list, unsigned int mark) |
1830 | { | |
1831 | while (list) { | |
1832 | struct commit_list *temp = list; | |
1833 | temp->item->object.flags &= ~mark; | |
1834 | list = temp->next; | |
1835 | free(temp); | |
1836 | } | |
1837 | } | |
1838 | ||
1839 | int ref_newer(const unsigned char *new_sha1, const unsigned char *old_sha1) | |
1840 | { | |
1841 | struct object *o; | |
1842 | struct commit *old, *new; | |
1843 | struct commit_list *list, *used; | |
1844 | int found = 0; | |
1845 | ||
75e5c0dc JH |
1846 | /* |
1847 | * Both new and old must be commit-ish and new is descendant of | |
ec8452d5 JS |
1848 | * old. Otherwise we require --force. |
1849 | */ | |
1850 | o = deref_tag(parse_object(old_sha1), NULL, 0); | |
1851 | if (!o || o->type != OBJ_COMMIT) | |
1852 | return 0; | |
1853 | old = (struct commit *) o; | |
1854 | ||
1855 | o = deref_tag(parse_object(new_sha1), NULL, 0); | |
1856 | if (!o || o->type != OBJ_COMMIT) | |
1857 | return 0; | |
1858 | new = (struct commit *) o; | |
1859 | ||
1860 | if (parse_commit(new) < 0) | |
1861 | return 0; | |
1862 | ||
1863 | used = list = NULL; | |
1864 | commit_list_insert(new, &list); | |
1865 | while (list) { | |
1866 | new = pop_most_recent_commit(&list, TMP_MARK); | |
1867 | commit_list_insert(new, &used); | |
1868 | if (new == old) { | |
1869 | found = 1; | |
1870 | break; | |
1871 | } | |
1872 | } | |
1873 | unmark_and_free(list, TMP_MARK); | |
1874 | unmark_and_free(used, TMP_MARK); | |
1875 | return found; | |
1876 | } | |
1877 | ||
6d21bf96 | 1878 | /* |
f2e08739 JX |
1879 | * Compare a branch with its upstream, and save their differences (number |
1880 | * of commits) in *num_ours and *num_theirs. | |
1881 | * | |
1882 | * Return 0 if branch has no upstream (no base), -1 if upstream is missing | |
1883 | * (with "gone" base), otherwise 1 (with base). | |
6d21bf96 JH |
1884 | */ |
1885 | int stat_tracking_info(struct branch *branch, int *num_ours, int *num_theirs) | |
1886 | { | |
1887 | unsigned char sha1[20]; | |
1888 | struct commit *ours, *theirs; | |
1889 | char symmetric[84]; | |
1890 | struct rev_info revs; | |
1891 | const char *rev_argv[10], *base; | |
1892 | int rev_argc; | |
1893 | ||
f2e08739 | 1894 | /* Cannot stat unless we are marked to build on top of somebody else. */ |
6d21bf96 JH |
1895 | if (!branch || |
1896 | !branch->merge || !branch->merge[0] || !branch->merge[0]->dst) | |
1897 | return 0; | |
1898 | ||
f2e08739 | 1899 | /* Cannot stat if what we used to build on no longer exists */ |
6d21bf96 | 1900 | base = branch->merge[0]->dst; |
c6893323 | 1901 | if (read_ref(base, sha1)) |
f2e08739 | 1902 | return -1; |
57ffc5f8 | 1903 | theirs = lookup_commit_reference(sha1); |
6d21bf96 | 1904 | if (!theirs) |
f2e08739 | 1905 | return -1; |
6d21bf96 | 1906 | |
c6893323 | 1907 | if (read_ref(branch->refname, sha1)) |
f2e08739 | 1908 | return -1; |
57ffc5f8 | 1909 | ours = lookup_commit_reference(sha1); |
6d21bf96 | 1910 | if (!ours) |
f2e08739 | 1911 | return -1; |
6d21bf96 JH |
1912 | |
1913 | /* are we the same? */ | |
f2e08739 JX |
1914 | if (theirs == ours) { |
1915 | *num_theirs = *num_ours = 0; | |
1916 | return 1; | |
1917 | } | |
6d21bf96 | 1918 | |
8fbf879e | 1919 | /* Run "rev-list --left-right ours...theirs" internally... */ |
6d21bf96 JH |
1920 | rev_argc = 0; |
1921 | rev_argv[rev_argc++] = NULL; | |
1922 | rev_argv[rev_argc++] = "--left-right"; | |
1923 | rev_argv[rev_argc++] = symmetric; | |
1924 | rev_argv[rev_argc++] = "--"; | |
1925 | rev_argv[rev_argc] = NULL; | |
1926 | ||
1927 | strcpy(symmetric, sha1_to_hex(ours->object.sha1)); | |
1928 | strcpy(symmetric + 40, "..."); | |
1929 | strcpy(symmetric + 43, sha1_to_hex(theirs->object.sha1)); | |
1930 | ||
1931 | init_revisions(&revs, NULL); | |
1932 | setup_revisions(rev_argc, rev_argv, &revs, NULL); | |
81c3ce3c SB |
1933 | if (prepare_revision_walk(&revs)) |
1934 | die("revision walk setup failed"); | |
6d21bf96 JH |
1935 | |
1936 | /* ... and count the commits on each side. */ | |
1937 | *num_ours = 0; | |
1938 | *num_theirs = 0; | |
1939 | while (1) { | |
1940 | struct commit *c = get_revision(&revs); | |
1941 | if (!c) | |
1942 | break; | |
1943 | if (c->object.flags & SYMMETRIC_LEFT) | |
1944 | (*num_ours)++; | |
1945 | else | |
1946 | (*num_theirs)++; | |
1947 | } | |
c0234b2e JH |
1948 | |
1949 | /* clear object flags smudged by the above traversal */ | |
1950 | clear_commit_marks(ours, ALL_REV_FLAGS); | |
1951 | clear_commit_marks(theirs, ALL_REV_FLAGS); | |
6d21bf96 JH |
1952 | return 1; |
1953 | } | |
1954 | ||
1955 | /* | |
1956 | * Return true when there is anything to report, otherwise false. | |
1957 | */ | |
1958 | int format_tracking_info(struct branch *branch, struct strbuf *sb) | |
1959 | { | |
f2e08739 | 1960 | int ours, theirs; |
2f50babe | 1961 | char *base; |
f2e08739 | 1962 | int upstream_is_gone = 0; |
6d21bf96 | 1963 | |
f2e08739 JX |
1964 | switch (stat_tracking_info(branch, &ours, &theirs)) { |
1965 | case 0: | |
1966 | /* no base */ | |
6d21bf96 | 1967 | return 0; |
f2e08739 JX |
1968 | case -1: |
1969 | /* with "gone" base */ | |
1970 | upstream_is_gone = 1; | |
1971 | break; | |
1972 | default: | |
f2e08739 JX |
1973 | /* with base */ |
1974 | break; | |
1975 | } | |
6d21bf96 | 1976 | |
2f50babe | 1977 | base = shorten_unambiguous_ref(branch->merge[0]->dst, 0); |
f2e08739 JX |
1978 | if (upstream_is_gone) { |
1979 | strbuf_addf(sb, | |
1980 | _("Your branch is based on '%s', but the upstream is gone.\n"), | |
1981 | base); | |
1982 | if (advice_status_hints) | |
1983 | strbuf_addf(sb, | |
1984 | _(" (use \"git branch --unset-upstream\" to fixup)\n")); | |
f223459b JX |
1985 | } else if (!ours && !theirs) { |
1986 | strbuf_addf(sb, | |
1987 | _("Your branch is up-to-date with '%s'.\n"), | |
1988 | base); | |
f2e08739 | 1989 | } else if (!theirs) { |
8a5b7494 JX |
1990 | strbuf_addf(sb, |
1991 | Q_("Your branch is ahead of '%s' by %d commit.\n", | |
1992 | "Your branch is ahead of '%s' by %d commits.\n", | |
f2e08739 JX |
1993 | ours), |
1994 | base, ours); | |
491e3075 JK |
1995 | if (advice_status_hints) |
1996 | strbuf_addf(sb, | |
1997 | _(" (use \"git push\" to publish your local commits)\n")); | |
f2e08739 | 1998 | } else if (!ours) { |
8a5b7494 JX |
1999 | strbuf_addf(sb, |
2000 | Q_("Your branch is behind '%s' by %d commit, " | |
2001 | "and can be fast-forwarded.\n", | |
2002 | "Your branch is behind '%s' by %d commits, " | |
2003 | "and can be fast-forwarded.\n", | |
f2e08739 JX |
2004 | theirs), |
2005 | base, theirs); | |
491e3075 JK |
2006 | if (advice_status_hints) |
2007 | strbuf_addf(sb, | |
2008 | _(" (use \"git pull\" to update your local branch)\n")); | |
c190ced6 | 2009 | } else { |
8a5b7494 JX |
2010 | strbuf_addf(sb, |
2011 | Q_("Your branch and '%s' have diverged,\n" | |
2012 | "and have %d and %d different commit each, " | |
2013 | "respectively.\n", | |
2014 | "Your branch and '%s' have diverged,\n" | |
2015 | "and have %d and %d different commits each, " | |
2016 | "respectively.\n", | |
f2e08739 JX |
2017 | theirs), |
2018 | base, ours, theirs); | |
491e3075 JK |
2019 | if (advice_status_hints) |
2020 | strbuf_addf(sb, | |
2021 | _(" (use \"git pull\" to merge the remote branch into yours)\n")); | |
c190ced6 | 2022 | } |
2f50babe | 2023 | free(base); |
6d21bf96 JH |
2024 | return 1; |
2025 | } | |
454e2025 JS |
2026 | |
2027 | static int one_local_ref(const char *refname, const unsigned char *sha1, int flag, void *cb_data) | |
2028 | { | |
2029 | struct ref ***local_tail = cb_data; | |
2030 | struct ref *ref; | |
2031 | int len; | |
2032 | ||
2033 | /* we already know it starts with refs/ to get here */ | |
8d9c5010 | 2034 | if (check_refname_format(refname + 5, 0)) |
454e2025 JS |
2035 | return 0; |
2036 | ||
2037 | len = strlen(refname) + 1; | |
2038 | ref = xcalloc(1, sizeof(*ref) + len); | |
2039 | hashcpy(ref->new_sha1, sha1); | |
2040 | memcpy(ref->name, refname, len); | |
2041 | **local_tail = ref; | |
2042 | *local_tail = &ref->next; | |
2043 | return 0; | |
2044 | } | |
2045 | ||
2046 | struct ref *get_local_heads(void) | |
2047 | { | |
55f0566f | 2048 | struct ref *local_refs = NULL, **local_tail = &local_refs; |
454e2025 JS |
2049 | for_each_ref(one_local_ref, &local_tail); |
2050 | return local_refs; | |
2051 | } | |
8ef51733 | 2052 | |
4229f1fa JS |
2053 | struct ref *guess_remote_head(const struct ref *head, |
2054 | const struct ref *refs, | |
2055 | int all) | |
8ef51733 | 2056 | { |
8ef51733 | 2057 | const struct ref *r; |
4229f1fa JS |
2058 | struct ref *list = NULL; |
2059 | struct ref **tail = &list; | |
8ef51733 | 2060 | |
6cb4e6cc | 2061 | if (!head) |
8ef51733 JS |
2062 | return NULL; |
2063 | ||
fbb074c2 JK |
2064 | /* |
2065 | * Some transports support directly peeking at | |
2066 | * where HEAD points; if that is the case, then | |
2067 | * we don't have to guess. | |
2068 | */ | |
2069 | if (head->symref) | |
2070 | return copy_ref(find_ref_by_name(refs, head->symref)); | |
2071 | ||
8ef51733 | 2072 | /* If refs/heads/master could be right, it is. */ |
4229f1fa JS |
2073 | if (!all) { |
2074 | r = find_ref_by_name(refs, "refs/heads/master"); | |
2075 | if (r && !hashcmp(r->old_sha1, head->old_sha1)) | |
2076 | return copy_ref(r); | |
2077 | } | |
8ef51733 JS |
2078 | |
2079 | /* Look for another ref that points there */ | |
4229f1fa | 2080 | for (r = refs; r; r = r->next) { |
61adfd30 | 2081 | if (r != head && |
59556548 | 2082 | starts_with(r->name, "refs/heads/") && |
61adfd30 | 2083 | !hashcmp(r->old_sha1, head->old_sha1)) { |
4229f1fa JS |
2084 | *tail = copy_ref(r); |
2085 | tail = &((*tail)->next); | |
2086 | if (!all) | |
2087 | break; | |
2088 | } | |
2089 | } | |
8ef51733 | 2090 | |
4229f1fa | 2091 | return list; |
8ef51733 | 2092 | } |
f2ef6075 JS |
2093 | |
2094 | struct stale_heads_info { | |
f2ef6075 JS |
2095 | struct string_list *ref_names; |
2096 | struct ref **stale_refs_tail; | |
ed43de6e CMN |
2097 | struct refspec *refs; |
2098 | int ref_count; | |
f2ef6075 JS |
2099 | }; |
2100 | ||
2101 | static int get_stale_heads_cb(const char *refname, | |
2102 | const unsigned char *sha1, int flags, void *cb_data) | |
2103 | { | |
2104 | struct stale_heads_info *info = cb_data; | |
e6f63712 | 2105 | struct string_list matches = STRING_LIST_INIT_DUP; |
ed43de6e | 2106 | struct refspec query; |
e6f63712 | 2107 | int i, stale = 1; |
ed43de6e CMN |
2108 | memset(&query, 0, sizeof(struct refspec)); |
2109 | query.dst = (char *)refname; | |
2110 | ||
e6f63712 CMN |
2111 | query_refspecs_multiple(info->refs, info->ref_count, &query, &matches); |
2112 | if (matches.nr == 0) | |
2113 | goto clean_exit; /* No matches */ | |
ed43de6e CMN |
2114 | |
2115 | /* | |
2116 | * If we did find a suitable refspec and it's not a symref and | |
2117 | * it's not in the list of refs that currently exist in that | |
e6f63712 CMN |
2118 | * remote, we consider it to be stale. In order to deal with |
2119 | * overlapping refspecs, we need to go over all of the | |
2120 | * matching refs. | |
ed43de6e | 2121 | */ |
e6f63712 CMN |
2122 | if (flags & REF_ISSYMREF) |
2123 | goto clean_exit; | |
2124 | ||
2125 | for (i = 0; stale && i < matches.nr; i++) | |
2126 | if (string_list_has_string(info->ref_names, matches.items[i].string)) | |
2127 | stale = 0; | |
2128 | ||
2129 | if (stale) { | |
ed43de6e CMN |
2130 | struct ref *ref = make_linked_ref(refname, &info->stale_refs_tail); |
2131 | hashcpy(ref->new_sha1, sha1); | |
f2ef6075 | 2132 | } |
ed43de6e | 2133 | |
e6f63712 CMN |
2134 | clean_exit: |
2135 | string_list_clear(&matches, 0); | |
f2ef6075 JS |
2136 | return 0; |
2137 | } | |
2138 | ||
ed43de6e | 2139 | struct ref *get_stale_heads(struct refspec *refs, int ref_count, struct ref *fetch_map) |
f2ef6075 JS |
2140 | { |
2141 | struct ref *ref, *stale_refs = NULL; | |
183113a5 | 2142 | struct string_list ref_names = STRING_LIST_INIT_NODUP; |
f2ef6075 | 2143 | struct stale_heads_info info; |
f2ef6075 JS |
2144 | info.ref_names = &ref_names; |
2145 | info.stale_refs_tail = &stale_refs; | |
ed43de6e CMN |
2146 | info.refs = refs; |
2147 | info.ref_count = ref_count; | |
f2ef6075 | 2148 | for (ref = fetch_map; ref; ref = ref->next) |
1d2f80fa | 2149 | string_list_append(&ref_names, ref->name); |
3383e199 | 2150 | string_list_sort(&ref_names); |
f2ef6075 JS |
2151 | for_each_ref(get_stale_heads_cb, &info); |
2152 | string_list_clear(&ref_names, 0); | |
2153 | return stale_refs; | |
2154 | } | |
28f5d176 JH |
2155 | |
2156 | /* | |
2157 | * Compare-and-swap | |
2158 | */ | |
2159 | void clear_cas_option(struct push_cas_option *cas) | |
2160 | { | |
2161 | int i; | |
2162 | ||
2163 | for (i = 0; i < cas->nr; i++) | |
2164 | free(cas->entry[i].refname); | |
2165 | free(cas->entry); | |
2166 | memset(cas, 0, sizeof(*cas)); | |
2167 | } | |
2168 | ||
2169 | static struct push_cas *add_cas_entry(struct push_cas_option *cas, | |
2170 | const char *refname, | |
2171 | size_t refnamelen) | |
2172 | { | |
2173 | struct push_cas *entry; | |
2174 | ALLOC_GROW(cas->entry, cas->nr + 1, cas->alloc); | |
2175 | entry = &cas->entry[cas->nr++]; | |
2176 | memset(entry, 0, sizeof(*entry)); | |
2177 | entry->refname = xmemdupz(refname, refnamelen); | |
2178 | return entry; | |
2179 | } | |
2180 | ||
2181 | int parse_push_cas_option(struct push_cas_option *cas, const char *arg, int unset) | |
2182 | { | |
2183 | const char *colon; | |
2184 | struct push_cas *entry; | |
2185 | ||
2186 | if (unset) { | |
2187 | /* "--no-<option>" */ | |
2188 | clear_cas_option(cas); | |
2189 | return 0; | |
2190 | } | |
2191 | ||
2192 | if (!arg) { | |
2193 | /* just "--<option>" */ | |
2194 | cas->use_tracking_for_rest = 1; | |
2195 | return 0; | |
2196 | } | |
2197 | ||
2198 | /* "--<option>=refname" or "--<option>=refname:value" */ | |
2199 | colon = strchrnul(arg, ':'); | |
2200 | entry = add_cas_entry(cas, arg, colon - arg); | |
2201 | if (!*colon) | |
2202 | entry->use_tracking = 1; | |
2203 | else if (get_sha1(colon + 1, entry->expect)) | |
2204 | return error("cannot parse expected object name '%s'", colon + 1); | |
2205 | return 0; | |
2206 | } | |
2207 | ||
2208 | int parseopt_push_cas_option(const struct option *opt, const char *arg, int unset) | |
2209 | { | |
2210 | return parse_push_cas_option(opt->value, arg, unset); | |
2211 | } | |
91048a95 JH |
2212 | |
2213 | int is_empty_cas(const struct push_cas_option *cas) | |
2214 | { | |
2215 | return !cas->use_tracking_for_rest && !cas->nr; | |
2216 | } | |
2217 | ||
2218 | /* | |
2219 | * Look at remote.fetch refspec and see if we have a remote | |
2220 | * tracking branch for the refname there. Fill its current | |
2221 | * value in sha1[]. | |
2222 | * If we cannot do so, return negative to signal an error. | |
2223 | */ | |
2224 | static int remote_tracking(struct remote *remote, const char *refname, | |
2225 | unsigned char sha1[20]) | |
2226 | { | |
2227 | char *dst; | |
2228 | ||
2229 | dst = apply_refspecs(remote->fetch, remote->fetch_refspec_nr, refname); | |
2230 | if (!dst) | |
2231 | return -1; /* no tracking ref for refname at remote */ | |
2232 | if (read_ref(dst, sha1)) | |
2233 | return -1; /* we know what the tracking ref is but we cannot read it */ | |
2234 | return 0; | |
2235 | } | |
2236 | ||
2237 | static void apply_cas(struct push_cas_option *cas, | |
2238 | struct remote *remote, | |
2239 | struct ref *ref) | |
2240 | { | |
2241 | int i; | |
2242 | ||
2243 | /* Find an explicit --<option>=<name>[:<value>] entry */ | |
2244 | for (i = 0; i < cas->nr; i++) { | |
2245 | struct push_cas *entry = &cas->entry[i]; | |
54457fe5 | 2246 | if (!refname_match(entry->refname, ref->name)) |
91048a95 JH |
2247 | continue; |
2248 | ref->expect_old_sha1 = 1; | |
2249 | if (!entry->use_tracking) | |
2250 | hashcpy(ref->old_sha1_expect, cas->entry[i].expect); | |
2251 | else if (remote_tracking(remote, ref->name, ref->old_sha1_expect)) | |
2252 | ref->expect_old_no_trackback = 1; | |
2253 | return; | |
2254 | } | |
2255 | ||
2256 | /* Are we using "--<option>" to cover all? */ | |
2257 | if (!cas->use_tracking_for_rest) | |
2258 | return; | |
2259 | ||
2260 | ref->expect_old_sha1 = 1; | |
2261 | if (remote_tracking(remote, ref->name, ref->old_sha1_expect)) | |
2262 | ref->expect_old_no_trackback = 1; | |
2263 | } | |
2264 | ||
2265 | void apply_push_cas(struct push_cas_option *cas, | |
2266 | struct remote *remote, | |
2267 | struct ref *remote_refs) | |
2268 | { | |
2269 | struct ref *ref; | |
2270 | for (ref = remote_refs; ref; ref = ref->next) | |
2271 | apply_cas(cas, remote, ref); | |
2272 | } |