]>
Commit | Line | Data |
---|---|---|
1 | #include "cache.h" | |
2 | #include "config.h" | |
3 | #include "remote.h" | |
4 | #include "refs.h" | |
5 | #include "refspec.h" | |
6 | #include "object-store.h" | |
7 | #include "commit.h" | |
8 | #include "diff.h" | |
9 | #include "revision.h" | |
10 | #include "dir.h" | |
11 | #include "tag.h" | |
12 | #include "string-list.h" | |
13 | #include "mergesort.h" | |
14 | #include "argv-array.h" | |
15 | #include "commit-reach.h" | |
16 | #include "advice.h" | |
17 | ||
18 | enum map_direction { FROM_SRC, FROM_DST }; | |
19 | ||
20 | struct counted_string { | |
21 | size_t len; | |
22 | const char *s; | |
23 | }; | |
24 | struct rewrite { | |
25 | const char *base; | |
26 | size_t baselen; | |
27 | struct counted_string *instead_of; | |
28 | int instead_of_nr; | |
29 | int instead_of_alloc; | |
30 | }; | |
31 | struct rewrites { | |
32 | struct rewrite **rewrite; | |
33 | int rewrite_alloc; | |
34 | int rewrite_nr; | |
35 | }; | |
36 | ||
37 | static struct remote **remotes; | |
38 | static int remotes_alloc; | |
39 | static int remotes_nr; | |
40 | static struct hashmap remotes_hash; | |
41 | ||
42 | static struct branch **branches; | |
43 | static int branches_alloc; | |
44 | static int branches_nr; | |
45 | ||
46 | static struct branch *current_branch; | |
47 | static const char *pushremote_name; | |
48 | ||
49 | static struct rewrites rewrites; | |
50 | static struct rewrites rewrites_push; | |
51 | ||
52 | static int valid_remote(const struct remote *remote) | |
53 | { | |
54 | return (!!remote->url) || (!!remote->foreign_vcs); | |
55 | } | |
56 | ||
57 | static const char *alias_url(const char *url, struct rewrites *r) | |
58 | { | |
59 | int i, j; | |
60 | struct counted_string *longest; | |
61 | int longest_i; | |
62 | ||
63 | longest = NULL; | |
64 | longest_i = -1; | |
65 | for (i = 0; i < r->rewrite_nr; i++) { | |
66 | if (!r->rewrite[i]) | |
67 | continue; | |
68 | for (j = 0; j < r->rewrite[i]->instead_of_nr; j++) { | |
69 | if (starts_with(url, r->rewrite[i]->instead_of[j].s) && | |
70 | (!longest || | |
71 | longest->len < r->rewrite[i]->instead_of[j].len)) { | |
72 | longest = &(r->rewrite[i]->instead_of[j]); | |
73 | longest_i = i; | |
74 | } | |
75 | } | |
76 | } | |
77 | if (!longest) | |
78 | return url; | |
79 | ||
80 | return xstrfmt("%s%s", r->rewrite[longest_i]->base, url + longest->len); | |
81 | } | |
82 | ||
83 | static void add_url(struct remote *remote, const char *url) | |
84 | { | |
85 | ALLOC_GROW(remote->url, remote->url_nr + 1, remote->url_alloc); | |
86 | remote->url[remote->url_nr++] = url; | |
87 | } | |
88 | ||
89 | static void add_pushurl(struct remote *remote, const char *pushurl) | |
90 | { | |
91 | ALLOC_GROW(remote->pushurl, remote->pushurl_nr + 1, remote->pushurl_alloc); | |
92 | remote->pushurl[remote->pushurl_nr++] = pushurl; | |
93 | } | |
94 | ||
95 | static void add_pushurl_alias(struct remote *remote, const char *url) | |
96 | { | |
97 | const char *pushurl = alias_url(url, &rewrites_push); | |
98 | if (pushurl != url) | |
99 | add_pushurl(remote, pushurl); | |
100 | } | |
101 | ||
102 | static void add_url_alias(struct remote *remote, const char *url) | |
103 | { | |
104 | add_url(remote, alias_url(url, &rewrites)); | |
105 | add_pushurl_alias(remote, url); | |
106 | } | |
107 | ||
108 | struct remotes_hash_key { | |
109 | const char *str; | |
110 | int len; | |
111 | }; | |
112 | ||
113 | static int remotes_hash_cmp(const void *unused_cmp_data, | |
114 | const struct hashmap_entry *eptr, | |
115 | const struct hashmap_entry *entry_or_key, | |
116 | const void *keydata) | |
117 | { | |
118 | const struct remote *a, *b; | |
119 | const struct remotes_hash_key *key = keydata; | |
120 | ||
121 | a = container_of(eptr, const struct remote, ent); | |
122 | b = container_of(entry_or_key, const struct remote, ent); | |
123 | ||
124 | if (key) | |
125 | return strncmp(a->name, key->str, key->len) || a->name[key->len]; | |
126 | else | |
127 | return strcmp(a->name, b->name); | |
128 | } | |
129 | ||
130 | static inline void init_remotes_hash(void) | |
131 | { | |
132 | if (!remotes_hash.cmpfn) | |
133 | hashmap_init(&remotes_hash, remotes_hash_cmp, NULL, 0); | |
134 | } | |
135 | ||
136 | static struct remote *make_remote(const char *name, int len) | |
137 | { | |
138 | struct remote *ret, *replaced; | |
139 | struct remotes_hash_key lookup; | |
140 | struct hashmap_entry lookup_entry, *e; | |
141 | ||
142 | if (!len) | |
143 | len = strlen(name); | |
144 | ||
145 | init_remotes_hash(); | |
146 | lookup.str = name; | |
147 | lookup.len = len; | |
148 | hashmap_entry_init(&lookup_entry, memhash(name, len)); | |
149 | ||
150 | e = hashmap_get(&remotes_hash, &lookup_entry, &lookup); | |
151 | if (e) | |
152 | return container_of(e, struct remote, ent); | |
153 | ||
154 | ret = xcalloc(1, sizeof(struct remote)); | |
155 | ret->prune = -1; /* unspecified */ | |
156 | ret->prune_tags = -1; /* unspecified */ | |
157 | ret->name = xstrndup(name, len); | |
158 | refspec_init(&ret->push, REFSPEC_PUSH); | |
159 | refspec_init(&ret->fetch, REFSPEC_FETCH); | |
160 | ||
161 | ALLOC_GROW(remotes, remotes_nr + 1, remotes_alloc); | |
162 | remotes[remotes_nr++] = ret; | |
163 | ||
164 | hashmap_entry_init(&ret->ent, lookup_entry.hash); | |
165 | replaced = hashmap_put_entry(&remotes_hash, ret, ent); | |
166 | assert(replaced == NULL); /* no previous entry overwritten */ | |
167 | return ret; | |
168 | } | |
169 | ||
170 | static void add_merge(struct branch *branch, const char *name) | |
171 | { | |
172 | ALLOC_GROW(branch->merge_name, branch->merge_nr + 1, | |
173 | branch->merge_alloc); | |
174 | branch->merge_name[branch->merge_nr++] = name; | |
175 | } | |
176 | ||
177 | static struct branch *make_branch(const char *name, int len) | |
178 | { | |
179 | struct branch *ret; | |
180 | int i; | |
181 | ||
182 | for (i = 0; i < branches_nr; i++) { | |
183 | if (len ? (!strncmp(name, branches[i]->name, len) && | |
184 | !branches[i]->name[len]) : | |
185 | !strcmp(name, branches[i]->name)) | |
186 | return branches[i]; | |
187 | } | |
188 | ||
189 | ALLOC_GROW(branches, branches_nr + 1, branches_alloc); | |
190 | ret = xcalloc(1, sizeof(struct branch)); | |
191 | branches[branches_nr++] = ret; | |
192 | if (len) | |
193 | ret->name = xstrndup(name, len); | |
194 | else | |
195 | ret->name = xstrdup(name); | |
196 | ret->refname = xstrfmt("refs/heads/%s", ret->name); | |
197 | ||
198 | return ret; | |
199 | } | |
200 | ||
201 | static struct rewrite *make_rewrite(struct rewrites *r, const char *base, int len) | |
202 | { | |
203 | struct rewrite *ret; | |
204 | int i; | |
205 | ||
206 | for (i = 0; i < r->rewrite_nr; i++) { | |
207 | if (len | |
208 | ? (len == r->rewrite[i]->baselen && | |
209 | !strncmp(base, r->rewrite[i]->base, len)) | |
210 | : !strcmp(base, r->rewrite[i]->base)) | |
211 | return r->rewrite[i]; | |
212 | } | |
213 | ||
214 | ALLOC_GROW(r->rewrite, r->rewrite_nr + 1, r->rewrite_alloc); | |
215 | ret = xcalloc(1, sizeof(struct rewrite)); | |
216 | r->rewrite[r->rewrite_nr++] = ret; | |
217 | if (len) { | |
218 | ret->base = xstrndup(base, len); | |
219 | ret->baselen = len; | |
220 | } | |
221 | else { | |
222 | ret->base = xstrdup(base); | |
223 | ret->baselen = strlen(base); | |
224 | } | |
225 | return ret; | |
226 | } | |
227 | ||
228 | static void add_instead_of(struct rewrite *rewrite, const char *instead_of) | |
229 | { | |
230 | ALLOC_GROW(rewrite->instead_of, rewrite->instead_of_nr + 1, rewrite->instead_of_alloc); | |
231 | rewrite->instead_of[rewrite->instead_of_nr].s = instead_of; | |
232 | rewrite->instead_of[rewrite->instead_of_nr].len = strlen(instead_of); | |
233 | rewrite->instead_of_nr++; | |
234 | } | |
235 | ||
236 | static const char *skip_spaces(const char *s) | |
237 | { | |
238 | while (isspace(*s)) | |
239 | s++; | |
240 | return s; | |
241 | } | |
242 | ||
243 | static void read_remotes_file(struct remote *remote) | |
244 | { | |
245 | struct strbuf buf = STRBUF_INIT; | |
246 | FILE *f = fopen_or_warn(git_path("remotes/%s", remote->name), "r"); | |
247 | ||
248 | if (!f) | |
249 | return; | |
250 | remote->configured_in_repo = 1; | |
251 | remote->origin = REMOTE_REMOTES; | |
252 | while (strbuf_getline(&buf, f) != EOF) { | |
253 | const char *v; | |
254 | ||
255 | strbuf_rtrim(&buf); | |
256 | ||
257 | if (skip_prefix(buf.buf, "URL:", &v)) | |
258 | add_url_alias(remote, xstrdup(skip_spaces(v))); | |
259 | else if (skip_prefix(buf.buf, "Push:", &v)) | |
260 | refspec_append(&remote->push, skip_spaces(v)); | |
261 | else if (skip_prefix(buf.buf, "Pull:", &v)) | |
262 | refspec_append(&remote->fetch, skip_spaces(v)); | |
263 | } | |
264 | strbuf_release(&buf); | |
265 | fclose(f); | |
266 | } | |
267 | ||
268 | static void read_branches_file(struct remote *remote) | |
269 | { | |
270 | char *frag; | |
271 | struct strbuf buf = STRBUF_INIT; | |
272 | FILE *f = fopen_or_warn(git_path("branches/%s", remote->name), "r"); | |
273 | ||
274 | if (!f) | |
275 | return; | |
276 | ||
277 | strbuf_getline_lf(&buf, f); | |
278 | fclose(f); | |
279 | strbuf_trim(&buf); | |
280 | if (!buf.len) { | |
281 | strbuf_release(&buf); | |
282 | return; | |
283 | } | |
284 | ||
285 | remote->configured_in_repo = 1; | |
286 | remote->origin = REMOTE_BRANCHES; | |
287 | ||
288 | /* | |
289 | * The branches file would have URL and optionally | |
290 | * #branch specified. The "master" (or specified) branch is | |
291 | * fetched and stored in the local branch matching the | |
292 | * remote name. | |
293 | */ | |
294 | frag = strchr(buf.buf, '#'); | |
295 | if (frag) | |
296 | *(frag++) = '\0'; | |
297 | else | |
298 | frag = "master"; | |
299 | ||
300 | add_url_alias(remote, strbuf_detach(&buf, NULL)); | |
301 | strbuf_addf(&buf, "refs/heads/%s:refs/heads/%s", | |
302 | frag, remote->name); | |
303 | refspec_append(&remote->fetch, buf.buf); | |
304 | ||
305 | /* | |
306 | * Cogito compatible push: push current HEAD to remote #branch | |
307 | * (master if missing) | |
308 | */ | |
309 | strbuf_reset(&buf); | |
310 | strbuf_addf(&buf, "HEAD:refs/heads/%s", frag); | |
311 | refspec_append(&remote->push, buf.buf); | |
312 | remote->fetch_tags = 1; /* always auto-follow */ | |
313 | strbuf_release(&buf); | |
314 | } | |
315 | ||
316 | static int handle_config(const char *key, const char *value, void *cb) | |
317 | { | |
318 | const char *name; | |
319 | int namelen; | |
320 | const char *subkey; | |
321 | struct remote *remote; | |
322 | struct branch *branch; | |
323 | if (parse_config_key(key, "branch", &name, &namelen, &subkey) >= 0) { | |
324 | if (!name) | |
325 | return 0; | |
326 | branch = make_branch(name, namelen); | |
327 | if (!strcmp(subkey, "remote")) { | |
328 | return git_config_string(&branch->remote_name, key, value); | |
329 | } else if (!strcmp(subkey, "pushremote")) { | |
330 | return git_config_string(&branch->pushremote_name, key, value); | |
331 | } else if (!strcmp(subkey, "merge")) { | |
332 | if (!value) | |
333 | return config_error_nonbool(key); | |
334 | add_merge(branch, xstrdup(value)); | |
335 | } | |
336 | return 0; | |
337 | } | |
338 | if (parse_config_key(key, "url", &name, &namelen, &subkey) >= 0) { | |
339 | struct rewrite *rewrite; | |
340 | if (!name) | |
341 | return 0; | |
342 | if (!strcmp(subkey, "insteadof")) { | |
343 | if (!value) | |
344 | return config_error_nonbool(key); | |
345 | rewrite = make_rewrite(&rewrites, name, namelen); | |
346 | add_instead_of(rewrite, xstrdup(value)); | |
347 | } else if (!strcmp(subkey, "pushinsteadof")) { | |
348 | if (!value) | |
349 | return config_error_nonbool(key); | |
350 | rewrite = make_rewrite(&rewrites_push, name, namelen); | |
351 | add_instead_of(rewrite, xstrdup(value)); | |
352 | } | |
353 | } | |
354 | ||
355 | if (parse_config_key(key, "remote", &name, &namelen, &subkey) < 0) | |
356 | return 0; | |
357 | ||
358 | /* Handle remote.* variables */ | |
359 | if (!name && !strcmp(subkey, "pushdefault")) | |
360 | return git_config_string(&pushremote_name, key, value); | |
361 | ||
362 | if (!name) | |
363 | return 0; | |
364 | /* Handle remote.<name>.* variables */ | |
365 | if (*name == '/') { | |
366 | warning(_("config remote shorthand cannot begin with '/': %s"), | |
367 | name); | |
368 | return 0; | |
369 | } | |
370 | remote = make_remote(name, namelen); | |
371 | remote->origin = REMOTE_CONFIG; | |
372 | if (current_config_scope() == CONFIG_SCOPE_LOCAL || | |
373 | current_config_scope() == CONFIG_SCOPE_WORKTREE) | |
374 | remote->configured_in_repo = 1; | |
375 | if (!strcmp(subkey, "mirror")) | |
376 | remote->mirror = git_config_bool(key, value); | |
377 | else if (!strcmp(subkey, "skipdefaultupdate")) | |
378 | remote->skip_default_update = git_config_bool(key, value); | |
379 | else if (!strcmp(subkey, "skipfetchall")) | |
380 | remote->skip_default_update = git_config_bool(key, value); | |
381 | else if (!strcmp(subkey, "prune")) | |
382 | remote->prune = git_config_bool(key, value); | |
383 | else if (!strcmp(subkey, "prunetags")) | |
384 | remote->prune_tags = git_config_bool(key, value); | |
385 | else if (!strcmp(subkey, "url")) { | |
386 | const char *v; | |
387 | if (git_config_string(&v, key, value)) | |
388 | return -1; | |
389 | add_url(remote, v); | |
390 | } else if (!strcmp(subkey, "pushurl")) { | |
391 | const char *v; | |
392 | if (git_config_string(&v, key, value)) | |
393 | return -1; | |
394 | add_pushurl(remote, v); | |
395 | } else if (!strcmp(subkey, "push")) { | |
396 | const char *v; | |
397 | if (git_config_string(&v, key, value)) | |
398 | return -1; | |
399 | refspec_append(&remote->push, v); | |
400 | free((char *)v); | |
401 | } else if (!strcmp(subkey, "fetch")) { | |
402 | const char *v; | |
403 | if (git_config_string(&v, key, value)) | |
404 | return -1; | |
405 | refspec_append(&remote->fetch, v); | |
406 | free((char *)v); | |
407 | } else if (!strcmp(subkey, "receivepack")) { | |
408 | const char *v; | |
409 | if (git_config_string(&v, key, value)) | |
410 | return -1; | |
411 | if (!remote->receivepack) | |
412 | remote->receivepack = v; | |
413 | else | |
414 | error(_("more than one receivepack given, using the first")); | |
415 | } else if (!strcmp(subkey, "uploadpack")) { | |
416 | const char *v; | |
417 | if (git_config_string(&v, key, value)) | |
418 | return -1; | |
419 | if (!remote->uploadpack) | |
420 | remote->uploadpack = v; | |
421 | else | |
422 | error(_("more than one uploadpack given, using the first")); | |
423 | } else if (!strcmp(subkey, "tagopt")) { | |
424 | if (!strcmp(value, "--no-tags")) | |
425 | remote->fetch_tags = -1; | |
426 | else if (!strcmp(value, "--tags")) | |
427 | remote->fetch_tags = 2; | |
428 | } else if (!strcmp(subkey, "proxy")) { | |
429 | return git_config_string((const char **)&remote->http_proxy, | |
430 | key, value); | |
431 | } else if (!strcmp(subkey, "proxyauthmethod")) { | |
432 | return git_config_string((const char **)&remote->http_proxy_authmethod, | |
433 | key, value); | |
434 | } else if (!strcmp(subkey, "vcs")) { | |
435 | return git_config_string(&remote->foreign_vcs, key, value); | |
436 | } | |
437 | return 0; | |
438 | } | |
439 | ||
440 | static void alias_all_urls(void) | |
441 | { | |
442 | int i, j; | |
443 | for (i = 0; i < remotes_nr; i++) { | |
444 | int add_pushurl_aliases; | |
445 | if (!remotes[i]) | |
446 | continue; | |
447 | for (j = 0; j < remotes[i]->pushurl_nr; j++) { | |
448 | remotes[i]->pushurl[j] = alias_url(remotes[i]->pushurl[j], &rewrites); | |
449 | } | |
450 | add_pushurl_aliases = remotes[i]->pushurl_nr == 0; | |
451 | for (j = 0; j < remotes[i]->url_nr; j++) { | |
452 | if (add_pushurl_aliases) | |
453 | add_pushurl_alias(remotes[i], remotes[i]->url[j]); | |
454 | remotes[i]->url[j] = alias_url(remotes[i]->url[j], &rewrites); | |
455 | } | |
456 | } | |
457 | } | |
458 | ||
459 | static void read_config(void) | |
460 | { | |
461 | static int loaded; | |
462 | int flag; | |
463 | ||
464 | if (loaded) | |
465 | return; | |
466 | loaded = 1; | |
467 | ||
468 | current_branch = NULL; | |
469 | if (startup_info->have_repository) { | |
470 | const char *head_ref = resolve_ref_unsafe("HEAD", 0, NULL, &flag); | |
471 | if (head_ref && (flag & REF_ISSYMREF) && | |
472 | skip_prefix(head_ref, "refs/heads/", &head_ref)) { | |
473 | current_branch = make_branch(head_ref, 0); | |
474 | } | |
475 | } | |
476 | git_config(handle_config, NULL); | |
477 | alias_all_urls(); | |
478 | } | |
479 | ||
480 | static int valid_remote_nick(const char *name) | |
481 | { | |
482 | if (!name[0] || is_dot_or_dotdot(name)) | |
483 | return 0; | |
484 | ||
485 | /* remote nicknames cannot contain slashes */ | |
486 | while (*name) | |
487 | if (is_dir_sep(*name++)) | |
488 | return 0; | |
489 | return 1; | |
490 | } | |
491 | ||
492 | const char *remote_for_branch(struct branch *branch, int *explicit) | |
493 | { | |
494 | if (branch && branch->remote_name) { | |
495 | if (explicit) | |
496 | *explicit = 1; | |
497 | return branch->remote_name; | |
498 | } | |
499 | if (explicit) | |
500 | *explicit = 0; | |
501 | return "origin"; | |
502 | } | |
503 | ||
504 | const char *pushremote_for_branch(struct branch *branch, int *explicit) | |
505 | { | |
506 | if (branch && branch->pushremote_name) { | |
507 | if (explicit) | |
508 | *explicit = 1; | |
509 | return branch->pushremote_name; | |
510 | } | |
511 | if (pushremote_name) { | |
512 | if (explicit) | |
513 | *explicit = 1; | |
514 | return pushremote_name; | |
515 | } | |
516 | return remote_for_branch(branch, explicit); | |
517 | } | |
518 | ||
519 | const char *remote_ref_for_branch(struct branch *branch, int for_push, | |
520 | int *explicit) | |
521 | { | |
522 | if (branch) { | |
523 | if (!for_push) { | |
524 | if (branch->merge_nr) { | |
525 | if (explicit) | |
526 | *explicit = 1; | |
527 | return branch->merge_name[0]; | |
528 | } | |
529 | } else { | |
530 | const char *dst, *remote_name = | |
531 | pushremote_for_branch(branch, NULL); | |
532 | struct remote *remote = remote_get(remote_name); | |
533 | ||
534 | if (remote && remote->push.nr && | |
535 | (dst = apply_refspecs(&remote->push, | |
536 | branch->refname))) { | |
537 | if (explicit) | |
538 | *explicit = 1; | |
539 | return dst; | |
540 | } | |
541 | } | |
542 | } | |
543 | if (explicit) | |
544 | *explicit = 0; | |
545 | return ""; | |
546 | } | |
547 | ||
548 | static struct remote *remote_get_1(const char *name, | |
549 | const char *(*get_default)(struct branch *, int *)) | |
550 | { | |
551 | struct remote *ret; | |
552 | int name_given = 0; | |
553 | ||
554 | read_config(); | |
555 | ||
556 | if (name) | |
557 | name_given = 1; | |
558 | else | |
559 | name = get_default(current_branch, &name_given); | |
560 | ||
561 | ret = make_remote(name, 0); | |
562 | if (valid_remote_nick(name) && have_git_dir()) { | |
563 | if (!valid_remote(ret)) | |
564 | read_remotes_file(ret); | |
565 | if (!valid_remote(ret)) | |
566 | read_branches_file(ret); | |
567 | } | |
568 | if (name_given && !valid_remote(ret)) | |
569 | add_url_alias(ret, name); | |
570 | if (!valid_remote(ret)) | |
571 | return NULL; | |
572 | return ret; | |
573 | } | |
574 | ||
575 | struct remote *remote_get(const char *name) | |
576 | { | |
577 | return remote_get_1(name, remote_for_branch); | |
578 | } | |
579 | ||
580 | struct remote *pushremote_get(const char *name) | |
581 | { | |
582 | return remote_get_1(name, pushremote_for_branch); | |
583 | } | |
584 | ||
585 | int remote_is_configured(struct remote *remote, int in_repo) | |
586 | { | |
587 | if (!remote) | |
588 | return 0; | |
589 | if (in_repo) | |
590 | return remote->configured_in_repo; | |
591 | return !!remote->origin; | |
592 | } | |
593 | ||
594 | int for_each_remote(each_remote_fn fn, void *priv) | |
595 | { | |
596 | int i, result = 0; | |
597 | read_config(); | |
598 | for (i = 0; i < remotes_nr && !result; i++) { | |
599 | struct remote *r = remotes[i]; | |
600 | if (!r) | |
601 | continue; | |
602 | result = fn(r, priv); | |
603 | } | |
604 | return result; | |
605 | } | |
606 | ||
607 | static void handle_duplicate(struct ref *ref1, struct ref *ref2) | |
608 | { | |
609 | if (strcmp(ref1->name, ref2->name)) { | |
610 | if (ref1->fetch_head_status != FETCH_HEAD_IGNORE && | |
611 | ref2->fetch_head_status != FETCH_HEAD_IGNORE) { | |
612 | die(_("Cannot fetch both %s and %s to %s"), | |
613 | ref1->name, ref2->name, ref2->peer_ref->name); | |
614 | } else if (ref1->fetch_head_status != FETCH_HEAD_IGNORE && | |
615 | ref2->fetch_head_status == FETCH_HEAD_IGNORE) { | |
616 | warning(_("%s usually tracks %s, not %s"), | |
617 | ref2->peer_ref->name, ref2->name, ref1->name); | |
618 | } else if (ref1->fetch_head_status == FETCH_HEAD_IGNORE && | |
619 | ref2->fetch_head_status == FETCH_HEAD_IGNORE) { | |
620 | die(_("%s tracks both %s and %s"), | |
621 | ref2->peer_ref->name, ref1->name, ref2->name); | |
622 | } else { | |
623 | /* | |
624 | * This last possibility doesn't occur because | |
625 | * FETCH_HEAD_IGNORE entries always appear at | |
626 | * the end of the list. | |
627 | */ | |
628 | BUG("Internal error"); | |
629 | } | |
630 | } | |
631 | free(ref2->peer_ref); | |
632 | free(ref2); | |
633 | } | |
634 | ||
635 | struct ref *ref_remove_duplicates(struct ref *ref_map) | |
636 | { | |
637 | struct string_list refs = STRING_LIST_INIT_NODUP; | |
638 | struct ref *retval = NULL; | |
639 | struct ref **p = &retval; | |
640 | ||
641 | while (ref_map) { | |
642 | struct ref *ref = ref_map; | |
643 | ||
644 | ref_map = ref_map->next; | |
645 | ref->next = NULL; | |
646 | ||
647 | if (!ref->peer_ref) { | |
648 | *p = ref; | |
649 | p = &ref->next; | |
650 | } else { | |
651 | struct string_list_item *item = | |
652 | string_list_insert(&refs, ref->peer_ref->name); | |
653 | ||
654 | if (item->util) { | |
655 | /* Entry already existed */ | |
656 | handle_duplicate((struct ref *)item->util, ref); | |
657 | } else { | |
658 | *p = ref; | |
659 | p = &ref->next; | |
660 | item->util = ref; | |
661 | } | |
662 | } | |
663 | } | |
664 | ||
665 | string_list_clear(&refs, 0); | |
666 | return retval; | |
667 | } | |
668 | ||
669 | int remote_has_url(struct remote *remote, const char *url) | |
670 | { | |
671 | int i; | |
672 | for (i = 0; i < remote->url_nr; i++) { | |
673 | if (!strcmp(remote->url[i], url)) | |
674 | return 1; | |
675 | } | |
676 | return 0; | |
677 | } | |
678 | ||
679 | static int match_name_with_pattern(const char *key, const char *name, | |
680 | const char *value, char **result) | |
681 | { | |
682 | const char *kstar = strchr(key, '*'); | |
683 | size_t klen; | |
684 | size_t ksuffixlen; | |
685 | size_t namelen; | |
686 | int ret; | |
687 | if (!kstar) | |
688 | die(_("key '%s' of pattern had no '*'"), key); | |
689 | klen = kstar - key; | |
690 | ksuffixlen = strlen(kstar + 1); | |
691 | namelen = strlen(name); | |
692 | ret = !strncmp(name, key, klen) && namelen >= klen + ksuffixlen && | |
693 | !memcmp(name + namelen - ksuffixlen, kstar + 1, ksuffixlen); | |
694 | if (ret && value) { | |
695 | struct strbuf sb = STRBUF_INIT; | |
696 | const char *vstar = strchr(value, '*'); | |
697 | if (!vstar) | |
698 | die(_("value '%s' of pattern has no '*'"), value); | |
699 | strbuf_add(&sb, value, vstar - value); | |
700 | strbuf_add(&sb, name + klen, namelen - klen - ksuffixlen); | |
701 | strbuf_addstr(&sb, vstar + 1); | |
702 | *result = strbuf_detach(&sb, NULL); | |
703 | } | |
704 | return ret; | |
705 | } | |
706 | ||
707 | static void query_refspecs_multiple(struct refspec *rs, | |
708 | struct refspec_item *query, | |
709 | struct string_list *results) | |
710 | { | |
711 | int i; | |
712 | int find_src = !query->src; | |
713 | ||
714 | if (find_src && !query->dst) | |
715 | BUG("query_refspecs_multiple: need either src or dst"); | |
716 | ||
717 | for (i = 0; i < rs->nr; i++) { | |
718 | struct refspec_item *refspec = &rs->items[i]; | |
719 | const char *key = find_src ? refspec->dst : refspec->src; | |
720 | const char *value = find_src ? refspec->src : refspec->dst; | |
721 | const char *needle = find_src ? query->dst : query->src; | |
722 | char **result = find_src ? &query->src : &query->dst; | |
723 | ||
724 | if (!refspec->dst) | |
725 | continue; | |
726 | if (refspec->pattern) { | |
727 | if (match_name_with_pattern(key, needle, value, result)) | |
728 | string_list_append_nodup(results, *result); | |
729 | } else if (!strcmp(needle, key)) { | |
730 | string_list_append(results, value); | |
731 | } | |
732 | } | |
733 | } | |
734 | ||
735 | int query_refspecs(struct refspec *rs, struct refspec_item *query) | |
736 | { | |
737 | int i; | |
738 | int find_src = !query->src; | |
739 | const char *needle = find_src ? query->dst : query->src; | |
740 | char **result = find_src ? &query->src : &query->dst; | |
741 | ||
742 | if (find_src && !query->dst) | |
743 | BUG("query_refspecs: need either src or dst"); | |
744 | ||
745 | for (i = 0; i < rs->nr; i++) { | |
746 | struct refspec_item *refspec = &rs->items[i]; | |
747 | const char *key = find_src ? refspec->dst : refspec->src; | |
748 | const char *value = find_src ? refspec->src : refspec->dst; | |
749 | ||
750 | if (!refspec->dst) | |
751 | continue; | |
752 | if (refspec->pattern) { | |
753 | if (match_name_with_pattern(key, needle, value, result)) { | |
754 | query->force = refspec->force; | |
755 | return 0; | |
756 | } | |
757 | } else if (!strcmp(needle, key)) { | |
758 | *result = xstrdup(value); | |
759 | query->force = refspec->force; | |
760 | return 0; | |
761 | } | |
762 | } | |
763 | return -1; | |
764 | } | |
765 | ||
766 | char *apply_refspecs(struct refspec *rs, const char *name) | |
767 | { | |
768 | struct refspec_item query; | |
769 | ||
770 | memset(&query, 0, sizeof(struct refspec_item)); | |
771 | query.src = (char *)name; | |
772 | ||
773 | if (query_refspecs(rs, &query)) | |
774 | return NULL; | |
775 | ||
776 | return query.dst; | |
777 | } | |
778 | ||
779 | int remote_find_tracking(struct remote *remote, struct refspec_item *refspec) | |
780 | { | |
781 | return query_refspecs(&remote->fetch, refspec); | |
782 | } | |
783 | ||
784 | static struct ref *alloc_ref_with_prefix(const char *prefix, size_t prefixlen, | |
785 | const char *name) | |
786 | { | |
787 | size_t len = strlen(name); | |
788 | struct ref *ref = xcalloc(1, st_add4(sizeof(*ref), prefixlen, len, 1)); | |
789 | memcpy(ref->name, prefix, prefixlen); | |
790 | memcpy(ref->name + prefixlen, name, len); | |
791 | return ref; | |
792 | } | |
793 | ||
794 | struct ref *alloc_ref(const char *name) | |
795 | { | |
796 | return alloc_ref_with_prefix("", 0, name); | |
797 | } | |
798 | ||
799 | struct ref *copy_ref(const struct ref *ref) | |
800 | { | |
801 | struct ref *cpy; | |
802 | size_t len; | |
803 | if (!ref) | |
804 | return NULL; | |
805 | len = st_add3(sizeof(struct ref), strlen(ref->name), 1); | |
806 | cpy = xmalloc(len); | |
807 | memcpy(cpy, ref, len); | |
808 | cpy->next = NULL; | |
809 | cpy->symref = xstrdup_or_null(ref->symref); | |
810 | cpy->remote_status = xstrdup_or_null(ref->remote_status); | |
811 | cpy->peer_ref = copy_ref(ref->peer_ref); | |
812 | return cpy; | |
813 | } | |
814 | ||
815 | struct ref *copy_ref_list(const struct ref *ref) | |
816 | { | |
817 | struct ref *ret = NULL; | |
818 | struct ref **tail = &ret; | |
819 | while (ref) { | |
820 | *tail = copy_ref(ref); | |
821 | ref = ref->next; | |
822 | tail = &((*tail)->next); | |
823 | } | |
824 | return ret; | |
825 | } | |
826 | ||
827 | void free_one_ref(struct ref *ref) | |
828 | { | |
829 | if (!ref) | |
830 | return; | |
831 | free_one_ref(ref->peer_ref); | |
832 | free(ref->remote_status); | |
833 | free(ref->symref); | |
834 | free(ref); | |
835 | } | |
836 | ||
837 | void free_refs(struct ref *ref) | |
838 | { | |
839 | struct ref *next; | |
840 | while (ref) { | |
841 | next = ref->next; | |
842 | free_one_ref(ref); | |
843 | ref = next; | |
844 | } | |
845 | } | |
846 | ||
847 | int ref_compare_name(const void *va, const void *vb) | |
848 | { | |
849 | const struct ref *a = va, *b = vb; | |
850 | return strcmp(a->name, b->name); | |
851 | } | |
852 | ||
853 | static void *ref_list_get_next(const void *a) | |
854 | { | |
855 | return ((const struct ref *)a)->next; | |
856 | } | |
857 | ||
858 | static void ref_list_set_next(void *a, void *next) | |
859 | { | |
860 | ((struct ref *)a)->next = next; | |
861 | } | |
862 | ||
863 | void sort_ref_list(struct ref **l, int (*cmp)(const void *, const void *)) | |
864 | { | |
865 | *l = llist_mergesort(*l, ref_list_get_next, ref_list_set_next, cmp); | |
866 | } | |
867 | ||
868 | int count_refspec_match(const char *pattern, | |
869 | struct ref *refs, | |
870 | struct ref **matched_ref) | |
871 | { | |
872 | int patlen = strlen(pattern); | |
873 | struct ref *matched_weak = NULL; | |
874 | struct ref *matched = NULL; | |
875 | int weak_match = 0; | |
876 | int match = 0; | |
877 | ||
878 | for (weak_match = match = 0; refs; refs = refs->next) { | |
879 | char *name = refs->name; | |
880 | int namelen = strlen(name); | |
881 | ||
882 | if (!refname_match(pattern, name)) | |
883 | continue; | |
884 | ||
885 | /* A match is "weak" if it is with refs outside | |
886 | * heads or tags, and did not specify the pattern | |
887 | * in full (e.g. "refs/remotes/origin/master") or at | |
888 | * least from the toplevel (e.g. "remotes/origin/master"); | |
889 | * otherwise "git push $URL master" would result in | |
890 | * ambiguity between remotes/origin/master and heads/master | |
891 | * at the remote site. | |
892 | */ | |
893 | if (namelen != patlen && | |
894 | patlen != namelen - 5 && | |
895 | !starts_with(name, "refs/heads/") && | |
896 | !starts_with(name, "refs/tags/")) { | |
897 | /* We want to catch the case where only weak | |
898 | * matches are found and there are multiple | |
899 | * matches, and where more than one strong | |
900 | * matches are found, as ambiguous. One | |
901 | * strong match with zero or more weak matches | |
902 | * are acceptable as a unique match. | |
903 | */ | |
904 | matched_weak = refs; | |
905 | weak_match++; | |
906 | } | |
907 | else { | |
908 | matched = refs; | |
909 | match++; | |
910 | } | |
911 | } | |
912 | if (!matched) { | |
913 | if (matched_ref) | |
914 | *matched_ref = matched_weak; | |
915 | return weak_match; | |
916 | } | |
917 | else { | |
918 | if (matched_ref) | |
919 | *matched_ref = matched; | |
920 | return match; | |
921 | } | |
922 | } | |
923 | ||
924 | static void tail_link_ref(struct ref *ref, struct ref ***tail) | |
925 | { | |
926 | **tail = ref; | |
927 | while (ref->next) | |
928 | ref = ref->next; | |
929 | *tail = &ref->next; | |
930 | } | |
931 | ||
932 | static struct ref *alloc_delete_ref(void) | |
933 | { | |
934 | struct ref *ref = alloc_ref("(delete)"); | |
935 | oidclr(&ref->new_oid); | |
936 | return ref; | |
937 | } | |
938 | ||
939 | static int try_explicit_object_name(const char *name, | |
940 | struct ref **match) | |
941 | { | |
942 | struct object_id oid; | |
943 | ||
944 | if (!*name) { | |
945 | if (match) | |
946 | *match = alloc_delete_ref(); | |
947 | return 0; | |
948 | } | |
949 | ||
950 | if (get_oid(name, &oid)) | |
951 | return -1; | |
952 | ||
953 | if (match) { | |
954 | *match = alloc_ref(name); | |
955 | oidcpy(&(*match)->new_oid, &oid); | |
956 | } | |
957 | return 0; | |
958 | } | |
959 | ||
960 | static struct ref *make_linked_ref(const char *name, struct ref ***tail) | |
961 | { | |
962 | struct ref *ret = alloc_ref(name); | |
963 | tail_link_ref(ret, tail); | |
964 | return ret; | |
965 | } | |
966 | ||
967 | static char *guess_ref(const char *name, struct ref *peer) | |
968 | { | |
969 | struct strbuf buf = STRBUF_INIT; | |
970 | ||
971 | const char *r = resolve_ref_unsafe(peer->name, RESOLVE_REF_READING, | |
972 | NULL, NULL); | |
973 | if (!r) | |
974 | return NULL; | |
975 | ||
976 | if (starts_with(r, "refs/heads/")) { | |
977 | strbuf_addstr(&buf, "refs/heads/"); | |
978 | } else if (starts_with(r, "refs/tags/")) { | |
979 | strbuf_addstr(&buf, "refs/tags/"); | |
980 | } else { | |
981 | return NULL; | |
982 | } | |
983 | ||
984 | strbuf_addstr(&buf, name); | |
985 | return strbuf_detach(&buf, NULL); | |
986 | } | |
987 | ||
988 | static int match_explicit_lhs(struct ref *src, | |
989 | struct refspec_item *rs, | |
990 | struct ref **match, | |
991 | int *allocated_match) | |
992 | { | |
993 | switch (count_refspec_match(rs->src, src, match)) { | |
994 | case 1: | |
995 | if (allocated_match) | |
996 | *allocated_match = 0; | |
997 | return 0; | |
998 | case 0: | |
999 | /* The source could be in the get_sha1() format | |
1000 | * not a reference name. :refs/other is a | |
1001 | * way to delete 'other' ref at the remote end. | |
1002 | */ | |
1003 | if (try_explicit_object_name(rs->src, match) < 0) | |
1004 | return error(_("src refspec %s does not match any"), rs->src); | |
1005 | if (allocated_match) | |
1006 | *allocated_match = 1; | |
1007 | return 0; | |
1008 | default: | |
1009 | return error(_("src refspec %s matches more than one"), rs->src); | |
1010 | } | |
1011 | } | |
1012 | ||
1013 | static void show_push_unqualified_ref_name_error(const char *dst_value, | |
1014 | const char *matched_src_name) | |
1015 | { | |
1016 | struct object_id oid; | |
1017 | enum object_type type; | |
1018 | ||
1019 | /* | |
1020 | * TRANSLATORS: "matches '%s'%" is the <dst> part of "git push | |
1021 | * <remote> <src>:<dst>" push, and "being pushed ('%s')" is | |
1022 | * the <src>. | |
1023 | */ | |
1024 | error(_("The destination you provided is not a full refname (i.e.,\n" | |
1025 | "starting with \"refs/\"). We tried to guess what you meant by:\n" | |
1026 | "\n" | |
1027 | "- Looking for a ref that matches '%s' on the remote side.\n" | |
1028 | "- Checking if the <src> being pushed ('%s')\n" | |
1029 | " is a ref in \"refs/{heads,tags}/\". If so we add a corresponding\n" | |
1030 | " refs/{heads,tags}/ prefix on the remote side.\n" | |
1031 | "\n" | |
1032 | "Neither worked, so we gave up. You must fully qualify the ref."), | |
1033 | dst_value, matched_src_name); | |
1034 | ||
1035 | if (!advice_push_unqualified_ref_name) | |
1036 | return; | |
1037 | ||
1038 | if (get_oid(matched_src_name, &oid)) | |
1039 | BUG("'%s' is not a valid object, " | |
1040 | "match_explicit_lhs() should catch this!", | |
1041 | matched_src_name); | |
1042 | type = oid_object_info(the_repository, &oid, NULL); | |
1043 | if (type == OBJ_COMMIT) { | |
1044 | advise(_("The <src> part of the refspec is a commit object.\n" | |
1045 | "Did you mean to create a new branch by pushing to\n" | |
1046 | "'%s:refs/heads/%s'?"), | |
1047 | matched_src_name, dst_value); | |
1048 | } else if (type == OBJ_TAG) { | |
1049 | advise(_("The <src> part of the refspec is a tag object.\n" | |
1050 | "Did you mean to create a new tag by pushing to\n" | |
1051 | "'%s:refs/tags/%s'?"), | |
1052 | matched_src_name, dst_value); | |
1053 | } else if (type == OBJ_TREE) { | |
1054 | advise(_("The <src> part of the refspec is a tree object.\n" | |
1055 | "Did you mean to tag a new tree by pushing to\n" | |
1056 | "'%s:refs/tags/%s'?"), | |
1057 | matched_src_name, dst_value); | |
1058 | } else if (type == OBJ_BLOB) { | |
1059 | advise(_("The <src> part of the refspec is a blob object.\n" | |
1060 | "Did you mean to tag a new blob by pushing to\n" | |
1061 | "'%s:refs/tags/%s'?"), | |
1062 | matched_src_name, dst_value); | |
1063 | } else { | |
1064 | BUG("'%s' should be commit/tag/tree/blob, is '%d'", | |
1065 | matched_src_name, type); | |
1066 | } | |
1067 | } | |
1068 | ||
1069 | static int match_explicit(struct ref *src, struct ref *dst, | |
1070 | struct ref ***dst_tail, | |
1071 | struct refspec_item *rs) | |
1072 | { | |
1073 | struct ref *matched_src, *matched_dst; | |
1074 | int allocated_src; | |
1075 | ||
1076 | const char *dst_value = rs->dst; | |
1077 | char *dst_guess; | |
1078 | ||
1079 | if (rs->pattern || rs->matching) | |
1080 | return 0; | |
1081 | ||
1082 | matched_src = matched_dst = NULL; | |
1083 | if (match_explicit_lhs(src, rs, &matched_src, &allocated_src) < 0) | |
1084 | return -1; | |
1085 | ||
1086 | if (!dst_value) { | |
1087 | int flag; | |
1088 | ||
1089 | dst_value = resolve_ref_unsafe(matched_src->name, | |
1090 | RESOLVE_REF_READING, | |
1091 | NULL, &flag); | |
1092 | if (!dst_value || | |
1093 | ((flag & REF_ISSYMREF) && | |
1094 | !starts_with(dst_value, "refs/heads/"))) | |
1095 | die(_("%s cannot be resolved to branch"), | |
1096 | matched_src->name); | |
1097 | } | |
1098 | ||
1099 | switch (count_refspec_match(dst_value, dst, &matched_dst)) { | |
1100 | case 1: | |
1101 | break; | |
1102 | case 0: | |
1103 | if (starts_with(dst_value, "refs/")) { | |
1104 | matched_dst = make_linked_ref(dst_value, dst_tail); | |
1105 | } else if (is_null_oid(&matched_src->new_oid)) { | |
1106 | error(_("unable to delete '%s': remote ref does not exist"), | |
1107 | dst_value); | |
1108 | } else if ((dst_guess = guess_ref(dst_value, matched_src))) { | |
1109 | matched_dst = make_linked_ref(dst_guess, dst_tail); | |
1110 | free(dst_guess); | |
1111 | } else { | |
1112 | show_push_unqualified_ref_name_error(dst_value, | |
1113 | matched_src->name); | |
1114 | } | |
1115 | break; | |
1116 | default: | |
1117 | matched_dst = NULL; | |
1118 | error(_("dst refspec %s matches more than one"), | |
1119 | dst_value); | |
1120 | break; | |
1121 | } | |
1122 | if (!matched_dst) | |
1123 | return -1; | |
1124 | if (matched_dst->peer_ref) | |
1125 | return error(_("dst ref %s receives from more than one src"), | |
1126 | matched_dst->name); | |
1127 | else { | |
1128 | matched_dst->peer_ref = allocated_src ? | |
1129 | matched_src : | |
1130 | copy_ref(matched_src); | |
1131 | matched_dst->force = rs->force; | |
1132 | } | |
1133 | return 0; | |
1134 | } | |
1135 | ||
1136 | static int match_explicit_refs(struct ref *src, struct ref *dst, | |
1137 | struct ref ***dst_tail, struct refspec *rs) | |
1138 | { | |
1139 | int i, errs; | |
1140 | for (i = errs = 0; i < rs->nr; i++) | |
1141 | errs += match_explicit(src, dst, dst_tail, &rs->items[i]); | |
1142 | return errs; | |
1143 | } | |
1144 | ||
1145 | static char *get_ref_match(const struct refspec *rs, const struct ref *ref, | |
1146 | int send_mirror, int direction, | |
1147 | const struct refspec_item **ret_pat) | |
1148 | { | |
1149 | const struct refspec_item *pat; | |
1150 | char *name; | |
1151 | int i; | |
1152 | int matching_refs = -1; | |
1153 | for (i = 0; i < rs->nr; i++) { | |
1154 | const struct refspec_item *item = &rs->items[i]; | |
1155 | if (item->matching && | |
1156 | (matching_refs == -1 || item->force)) { | |
1157 | matching_refs = i; | |
1158 | continue; | |
1159 | } | |
1160 | ||
1161 | if (item->pattern) { | |
1162 | const char *dst_side = item->dst ? item->dst : item->src; | |
1163 | int match; | |
1164 | if (direction == FROM_SRC) | |
1165 | match = match_name_with_pattern(item->src, ref->name, dst_side, &name); | |
1166 | else | |
1167 | match = match_name_with_pattern(dst_side, ref->name, item->src, &name); | |
1168 | if (match) { | |
1169 | matching_refs = i; | |
1170 | break; | |
1171 | } | |
1172 | } | |
1173 | } | |
1174 | if (matching_refs == -1) | |
1175 | return NULL; | |
1176 | ||
1177 | pat = &rs->items[matching_refs]; | |
1178 | if (pat->matching) { | |
1179 | /* | |
1180 | * "matching refs"; traditionally we pushed everything | |
1181 | * including refs outside refs/heads/ hierarchy, but | |
1182 | * that does not make much sense these days. | |
1183 | */ | |
1184 | if (!send_mirror && !starts_with(ref->name, "refs/heads/")) | |
1185 | return NULL; | |
1186 | name = xstrdup(ref->name); | |
1187 | } | |
1188 | if (ret_pat) | |
1189 | *ret_pat = pat; | |
1190 | return name; | |
1191 | } | |
1192 | ||
1193 | static struct ref **tail_ref(struct ref **head) | |
1194 | { | |
1195 | struct ref **tail = head; | |
1196 | while (*tail) | |
1197 | tail = &((*tail)->next); | |
1198 | return tail; | |
1199 | } | |
1200 | ||
1201 | struct tips { | |
1202 | struct commit **tip; | |
1203 | int nr, alloc; | |
1204 | }; | |
1205 | ||
1206 | static void add_to_tips(struct tips *tips, const struct object_id *oid) | |
1207 | { | |
1208 | struct commit *commit; | |
1209 | ||
1210 | if (is_null_oid(oid)) | |
1211 | return; | |
1212 | commit = lookup_commit_reference_gently(the_repository, oid, 1); | |
1213 | if (!commit || (commit->object.flags & TMP_MARK)) | |
1214 | return; | |
1215 | commit->object.flags |= TMP_MARK; | |
1216 | ALLOC_GROW(tips->tip, tips->nr + 1, tips->alloc); | |
1217 | tips->tip[tips->nr++] = commit; | |
1218 | } | |
1219 | ||
1220 | static void add_missing_tags(struct ref *src, struct ref **dst, struct ref ***dst_tail) | |
1221 | { | |
1222 | struct string_list dst_tag = STRING_LIST_INIT_NODUP; | |
1223 | struct string_list src_tag = STRING_LIST_INIT_NODUP; | |
1224 | struct string_list_item *item; | |
1225 | struct ref *ref; | |
1226 | struct tips sent_tips; | |
1227 | ||
1228 | /* | |
1229 | * Collect everything we know they would have at the end of | |
1230 | * this push, and collect all tags they have. | |
1231 | */ | |
1232 | memset(&sent_tips, 0, sizeof(sent_tips)); | |
1233 | for (ref = *dst; ref; ref = ref->next) { | |
1234 | if (ref->peer_ref && | |
1235 | !is_null_oid(&ref->peer_ref->new_oid)) | |
1236 | add_to_tips(&sent_tips, &ref->peer_ref->new_oid); | |
1237 | else | |
1238 | add_to_tips(&sent_tips, &ref->old_oid); | |
1239 | if (starts_with(ref->name, "refs/tags/")) | |
1240 | string_list_append(&dst_tag, ref->name); | |
1241 | } | |
1242 | clear_commit_marks_many(sent_tips.nr, sent_tips.tip, TMP_MARK); | |
1243 | ||
1244 | string_list_sort(&dst_tag); | |
1245 | ||
1246 | /* Collect tags they do not have. */ | |
1247 | for (ref = src; ref; ref = ref->next) { | |
1248 | if (!starts_with(ref->name, "refs/tags/")) | |
1249 | continue; /* not a tag */ | |
1250 | if (string_list_has_string(&dst_tag, ref->name)) | |
1251 | continue; /* they already have it */ | |
1252 | if (oid_object_info(the_repository, &ref->new_oid, NULL) != OBJ_TAG) | |
1253 | continue; /* be conservative */ | |
1254 | item = string_list_append(&src_tag, ref->name); | |
1255 | item->util = ref; | |
1256 | } | |
1257 | string_list_clear(&dst_tag, 0); | |
1258 | ||
1259 | /* | |
1260 | * At this point, src_tag lists tags that are missing from | |
1261 | * dst, and sent_tips lists the tips we are pushing or those | |
1262 | * that we know they already have. An element in the src_tag | |
1263 | * that is an ancestor of any of the sent_tips needs to be | |
1264 | * sent to the other side. | |
1265 | */ | |
1266 | if (sent_tips.nr) { | |
1267 | const int reachable_flag = 1; | |
1268 | struct commit_list *found_commits; | |
1269 | struct commit **src_commits; | |
1270 | int nr_src_commits = 0, alloc_src_commits = 16; | |
1271 | ALLOC_ARRAY(src_commits, alloc_src_commits); | |
1272 | ||
1273 | for_each_string_list_item(item, &src_tag) { | |
1274 | struct ref *ref = item->util; | |
1275 | struct commit *commit; | |
1276 | ||
1277 | if (is_null_oid(&ref->new_oid)) | |
1278 | continue; | |
1279 | commit = lookup_commit_reference_gently(the_repository, | |
1280 | &ref->new_oid, | |
1281 | 1); | |
1282 | if (!commit) | |
1283 | /* not pushing a commit, which is not an error */ | |
1284 | continue; | |
1285 | ||
1286 | ALLOC_GROW(src_commits, nr_src_commits + 1, alloc_src_commits); | |
1287 | src_commits[nr_src_commits++] = commit; | |
1288 | } | |
1289 | ||
1290 | found_commits = get_reachable_subset(sent_tips.tip, sent_tips.nr, | |
1291 | src_commits, nr_src_commits, | |
1292 | reachable_flag); | |
1293 | ||
1294 | for_each_string_list_item(item, &src_tag) { | |
1295 | struct ref *dst_ref; | |
1296 | struct ref *ref = item->util; | |
1297 | struct commit *commit; | |
1298 | ||
1299 | if (is_null_oid(&ref->new_oid)) | |
1300 | continue; | |
1301 | commit = lookup_commit_reference_gently(the_repository, | |
1302 | &ref->new_oid, | |
1303 | 1); | |
1304 | if (!commit) | |
1305 | /* not pushing a commit, which is not an error */ | |
1306 | continue; | |
1307 | ||
1308 | /* | |
1309 | * Is this tag, which they do not have, reachable from | |
1310 | * any of the commits we are sending? | |
1311 | */ | |
1312 | if (!(commit->object.flags & reachable_flag)) | |
1313 | continue; | |
1314 | ||
1315 | /* Add it in */ | |
1316 | dst_ref = make_linked_ref(ref->name, dst_tail); | |
1317 | oidcpy(&dst_ref->new_oid, &ref->new_oid); | |
1318 | dst_ref->peer_ref = copy_ref(ref); | |
1319 | } | |
1320 | ||
1321 | clear_commit_marks_many(nr_src_commits, src_commits, reachable_flag); | |
1322 | free(src_commits); | |
1323 | free_commit_list(found_commits); | |
1324 | } | |
1325 | ||
1326 | string_list_clear(&src_tag, 0); | |
1327 | free(sent_tips.tip); | |
1328 | } | |
1329 | ||
1330 | struct ref *find_ref_by_name(const struct ref *list, const char *name) | |
1331 | { | |
1332 | for ( ; list; list = list->next) | |
1333 | if (!strcmp(list->name, name)) | |
1334 | return (struct ref *)list; | |
1335 | return NULL; | |
1336 | } | |
1337 | ||
1338 | static void prepare_ref_index(struct string_list *ref_index, struct ref *ref) | |
1339 | { | |
1340 | for ( ; ref; ref = ref->next) | |
1341 | string_list_append_nodup(ref_index, ref->name)->util = ref; | |
1342 | ||
1343 | string_list_sort(ref_index); | |
1344 | } | |
1345 | ||
1346 | /* | |
1347 | * Given only the set of local refs, sanity-check the set of push | |
1348 | * refspecs. We can't catch all errors that match_push_refs would, | |
1349 | * but we can catch some errors early before even talking to the | |
1350 | * remote side. | |
1351 | */ | |
1352 | int check_push_refs(struct ref *src, struct refspec *rs) | |
1353 | { | |
1354 | int ret = 0; | |
1355 | int i; | |
1356 | ||
1357 | for (i = 0; i < rs->nr; i++) { | |
1358 | struct refspec_item *item = &rs->items[i]; | |
1359 | ||
1360 | if (item->pattern || item->matching) | |
1361 | continue; | |
1362 | ||
1363 | ret |= match_explicit_lhs(src, item, NULL, NULL); | |
1364 | } | |
1365 | ||
1366 | return ret; | |
1367 | } | |
1368 | ||
1369 | /* | |
1370 | * Given the set of refs the local repository has, the set of refs the | |
1371 | * remote repository has, and the refspec used for push, determine | |
1372 | * what remote refs we will update and with what value by setting | |
1373 | * peer_ref (which object is being pushed) and force (if the push is | |
1374 | * forced) in elements of "dst". The function may add new elements to | |
1375 | * dst (e.g. pushing to a new branch, done in match_explicit_refs). | |
1376 | */ | |
1377 | int match_push_refs(struct ref *src, struct ref **dst, | |
1378 | struct refspec *rs, int flags) | |
1379 | { | |
1380 | int send_all = flags & MATCH_REFS_ALL; | |
1381 | int send_mirror = flags & MATCH_REFS_MIRROR; | |
1382 | int send_prune = flags & MATCH_REFS_PRUNE; | |
1383 | int errs; | |
1384 | struct ref *ref, **dst_tail = tail_ref(dst); | |
1385 | struct string_list dst_ref_index = STRING_LIST_INIT_NODUP; | |
1386 | ||
1387 | /* If no refspec is provided, use the default ":" */ | |
1388 | if (!rs->nr) | |
1389 | refspec_append(rs, ":"); | |
1390 | ||
1391 | errs = match_explicit_refs(src, *dst, &dst_tail, rs); | |
1392 | ||
1393 | /* pick the remainder */ | |
1394 | for (ref = src; ref; ref = ref->next) { | |
1395 | struct string_list_item *dst_item; | |
1396 | struct ref *dst_peer; | |
1397 | const struct refspec_item *pat = NULL; | |
1398 | char *dst_name; | |
1399 | ||
1400 | dst_name = get_ref_match(rs, ref, send_mirror, FROM_SRC, &pat); | |
1401 | if (!dst_name) | |
1402 | continue; | |
1403 | ||
1404 | if (!dst_ref_index.nr) | |
1405 | prepare_ref_index(&dst_ref_index, *dst); | |
1406 | ||
1407 | dst_item = string_list_lookup(&dst_ref_index, dst_name); | |
1408 | dst_peer = dst_item ? dst_item->util : NULL; | |
1409 | if (dst_peer) { | |
1410 | if (dst_peer->peer_ref) | |
1411 | /* We're already sending something to this ref. */ | |
1412 | goto free_name; | |
1413 | } else { | |
1414 | if (pat->matching && !(send_all || send_mirror)) | |
1415 | /* | |
1416 | * Remote doesn't have it, and we have no | |
1417 | * explicit pattern, and we don't have | |
1418 | * --all or --mirror. | |
1419 | */ | |
1420 | goto free_name; | |
1421 | ||
1422 | /* Create a new one and link it */ | |
1423 | dst_peer = make_linked_ref(dst_name, &dst_tail); | |
1424 | oidcpy(&dst_peer->new_oid, &ref->new_oid); | |
1425 | string_list_insert(&dst_ref_index, | |
1426 | dst_peer->name)->util = dst_peer; | |
1427 | } | |
1428 | dst_peer->peer_ref = copy_ref(ref); | |
1429 | dst_peer->force = pat->force; | |
1430 | free_name: | |
1431 | free(dst_name); | |
1432 | } | |
1433 | ||
1434 | string_list_clear(&dst_ref_index, 0); | |
1435 | ||
1436 | if (flags & MATCH_REFS_FOLLOW_TAGS) | |
1437 | add_missing_tags(src, dst, &dst_tail); | |
1438 | ||
1439 | if (send_prune) { | |
1440 | struct string_list src_ref_index = STRING_LIST_INIT_NODUP; | |
1441 | /* check for missing refs on the remote */ | |
1442 | for (ref = *dst; ref; ref = ref->next) { | |
1443 | char *src_name; | |
1444 | ||
1445 | if (ref->peer_ref) | |
1446 | /* We're already sending something to this ref. */ | |
1447 | continue; | |
1448 | ||
1449 | src_name = get_ref_match(rs, ref, send_mirror, FROM_DST, NULL); | |
1450 | if (src_name) { | |
1451 | if (!src_ref_index.nr) | |
1452 | prepare_ref_index(&src_ref_index, src); | |
1453 | if (!string_list_has_string(&src_ref_index, | |
1454 | src_name)) | |
1455 | ref->peer_ref = alloc_delete_ref(); | |
1456 | free(src_name); | |
1457 | } | |
1458 | } | |
1459 | string_list_clear(&src_ref_index, 0); | |
1460 | } | |
1461 | ||
1462 | if (errs) | |
1463 | return -1; | |
1464 | return 0; | |
1465 | } | |
1466 | ||
1467 | void set_ref_status_for_push(struct ref *remote_refs, int send_mirror, | |
1468 | int force_update) | |
1469 | { | |
1470 | struct ref *ref; | |
1471 | ||
1472 | for (ref = remote_refs; ref; ref = ref->next) { | |
1473 | int force_ref_update = ref->force || force_update; | |
1474 | int reject_reason = 0; | |
1475 | ||
1476 | if (ref->peer_ref) | |
1477 | oidcpy(&ref->new_oid, &ref->peer_ref->new_oid); | |
1478 | else if (!send_mirror) | |
1479 | continue; | |
1480 | ||
1481 | ref->deletion = is_null_oid(&ref->new_oid); | |
1482 | if (!ref->deletion && | |
1483 | oideq(&ref->old_oid, &ref->new_oid)) { | |
1484 | ref->status = REF_STATUS_UPTODATE; | |
1485 | continue; | |
1486 | } | |
1487 | ||
1488 | /* | |
1489 | * If the remote ref has moved and is now different | |
1490 | * from what we expect, reject any push. | |
1491 | * | |
1492 | * It also is an error if the user told us to check | |
1493 | * with the remote-tracking branch to find the value | |
1494 | * to expect, but we did not have such a tracking | |
1495 | * branch. | |
1496 | */ | |
1497 | if (ref->expect_old_sha1) { | |
1498 | if (!oideq(&ref->old_oid, &ref->old_oid_expect)) | |
1499 | reject_reason = REF_STATUS_REJECT_STALE; | |
1500 | else | |
1501 | /* If the ref isn't stale then force the update. */ | |
1502 | force_ref_update = 1; | |
1503 | } | |
1504 | ||
1505 | /* | |
1506 | * If the update isn't already rejected then check | |
1507 | * the usual "must fast-forward" rules. | |
1508 | * | |
1509 | * Decide whether an individual refspec A:B can be | |
1510 | * pushed. The push will succeed if any of the | |
1511 | * following are true: | |
1512 | * | |
1513 | * (1) the remote reference B does not exist | |
1514 | * | |
1515 | * (2) the remote reference B is being removed (i.e., | |
1516 | * pushing :B where no source is specified) | |
1517 | * | |
1518 | * (3) the destination is not under refs/tags/, and | |
1519 | * if the old and new value is a commit, the new | |
1520 | * is a descendant of the old. | |
1521 | * | |
1522 | * (4) it is forced using the +A:B notation, or by | |
1523 | * passing the --force argument | |
1524 | */ | |
1525 | ||
1526 | if (!reject_reason && !ref->deletion && !is_null_oid(&ref->old_oid)) { | |
1527 | if (starts_with(ref->name, "refs/tags/")) | |
1528 | reject_reason = REF_STATUS_REJECT_ALREADY_EXISTS; | |
1529 | else if (!has_object_file(&ref->old_oid)) | |
1530 | reject_reason = REF_STATUS_REJECT_FETCH_FIRST; | |
1531 | else if (!lookup_commit_reference_gently(the_repository, &ref->old_oid, 1) || | |
1532 | !lookup_commit_reference_gently(the_repository, &ref->new_oid, 1)) | |
1533 | reject_reason = REF_STATUS_REJECT_NEEDS_FORCE; | |
1534 | else if (!ref_newer(&ref->new_oid, &ref->old_oid)) | |
1535 | reject_reason = REF_STATUS_REJECT_NONFASTFORWARD; | |
1536 | } | |
1537 | ||
1538 | /* | |
1539 | * "--force" will defeat any rejection implemented | |
1540 | * by the rules above. | |
1541 | */ | |
1542 | if (!force_ref_update) | |
1543 | ref->status = reject_reason; | |
1544 | else if (reject_reason) | |
1545 | ref->forced_update = 1; | |
1546 | } | |
1547 | } | |
1548 | ||
1549 | static void set_merge(struct branch *ret) | |
1550 | { | |
1551 | struct remote *remote; | |
1552 | char *ref; | |
1553 | struct object_id oid; | |
1554 | int i; | |
1555 | ||
1556 | if (!ret) | |
1557 | return; /* no branch */ | |
1558 | if (ret->merge) | |
1559 | return; /* already run */ | |
1560 | if (!ret->remote_name || !ret->merge_nr) { | |
1561 | /* | |
1562 | * no merge config; let's make sure we don't confuse callers | |
1563 | * with a non-zero merge_nr but a NULL merge | |
1564 | */ | |
1565 | ret->merge_nr = 0; | |
1566 | return; | |
1567 | } | |
1568 | ||
1569 | remote = remote_get(ret->remote_name); | |
1570 | ||
1571 | ret->merge = xcalloc(ret->merge_nr, sizeof(*ret->merge)); | |
1572 | for (i = 0; i < ret->merge_nr; i++) { | |
1573 | ret->merge[i] = xcalloc(1, sizeof(**ret->merge)); | |
1574 | ret->merge[i]->src = xstrdup(ret->merge_name[i]); | |
1575 | if (!remote_find_tracking(remote, ret->merge[i]) || | |
1576 | strcmp(ret->remote_name, ".")) | |
1577 | continue; | |
1578 | if (dwim_ref(ret->merge_name[i], strlen(ret->merge_name[i]), | |
1579 | &oid, &ref) == 1) | |
1580 | ret->merge[i]->dst = ref; | |
1581 | else | |
1582 | ret->merge[i]->dst = xstrdup(ret->merge_name[i]); | |
1583 | } | |
1584 | } | |
1585 | ||
1586 | struct branch *branch_get(const char *name) | |
1587 | { | |
1588 | struct branch *ret; | |
1589 | ||
1590 | read_config(); | |
1591 | if (!name || !*name || !strcmp(name, "HEAD")) | |
1592 | ret = current_branch; | |
1593 | else | |
1594 | ret = make_branch(name, 0); | |
1595 | set_merge(ret); | |
1596 | return ret; | |
1597 | } | |
1598 | ||
1599 | int branch_has_merge_config(struct branch *branch) | |
1600 | { | |
1601 | return branch && !!branch->merge; | |
1602 | } | |
1603 | ||
1604 | int branch_merge_matches(struct branch *branch, | |
1605 | int i, | |
1606 | const char *refname) | |
1607 | { | |
1608 | if (!branch || i < 0 || i >= branch->merge_nr) | |
1609 | return 0; | |
1610 | return refname_match(branch->merge[i]->src, refname); | |
1611 | } | |
1612 | ||
1613 | __attribute__((format (printf,2,3))) | |
1614 | static const char *error_buf(struct strbuf *err, const char *fmt, ...) | |
1615 | { | |
1616 | if (err) { | |
1617 | va_list ap; | |
1618 | va_start(ap, fmt); | |
1619 | strbuf_vaddf(err, fmt, ap); | |
1620 | va_end(ap); | |
1621 | } | |
1622 | return NULL; | |
1623 | } | |
1624 | ||
1625 | const char *branch_get_upstream(struct branch *branch, struct strbuf *err) | |
1626 | { | |
1627 | if (!branch) | |
1628 | return error_buf(err, _("HEAD does not point to a branch")); | |
1629 | ||
1630 | if (!branch->merge || !branch->merge[0]) { | |
1631 | /* | |
1632 | * no merge config; is it because the user didn't define any, | |
1633 | * or because it is not a real branch, and get_branch | |
1634 | * auto-vivified it? | |
1635 | */ | |
1636 | if (!ref_exists(branch->refname)) | |
1637 | return error_buf(err, _("no such branch: '%s'"), | |
1638 | branch->name); | |
1639 | return error_buf(err, | |
1640 | _("no upstream configured for branch '%s'"), | |
1641 | branch->name); | |
1642 | } | |
1643 | ||
1644 | if (!branch->merge[0]->dst) | |
1645 | return error_buf(err, | |
1646 | _("upstream branch '%s' not stored as a remote-tracking branch"), | |
1647 | branch->merge[0]->src); | |
1648 | ||
1649 | return branch->merge[0]->dst; | |
1650 | } | |
1651 | ||
1652 | static const char *tracking_for_push_dest(struct remote *remote, | |
1653 | const char *refname, | |
1654 | struct strbuf *err) | |
1655 | { | |
1656 | char *ret; | |
1657 | ||
1658 | ret = apply_refspecs(&remote->fetch, refname); | |
1659 | if (!ret) | |
1660 | return error_buf(err, | |
1661 | _("push destination '%s' on remote '%s' has no local tracking branch"), | |
1662 | refname, remote->name); | |
1663 | return ret; | |
1664 | } | |
1665 | ||
1666 | static const char *branch_get_push_1(struct branch *branch, struct strbuf *err) | |
1667 | { | |
1668 | struct remote *remote; | |
1669 | ||
1670 | remote = remote_get(pushremote_for_branch(branch, NULL)); | |
1671 | if (!remote) | |
1672 | return error_buf(err, | |
1673 | _("branch '%s' has no remote for pushing"), | |
1674 | branch->name); | |
1675 | ||
1676 | if (remote->push.nr) { | |
1677 | char *dst; | |
1678 | const char *ret; | |
1679 | ||
1680 | dst = apply_refspecs(&remote->push, branch->refname); | |
1681 | if (!dst) | |
1682 | return error_buf(err, | |
1683 | _("push refspecs for '%s' do not include '%s'"), | |
1684 | remote->name, branch->name); | |
1685 | ||
1686 | ret = tracking_for_push_dest(remote, dst, err); | |
1687 | free(dst); | |
1688 | return ret; | |
1689 | } | |
1690 | ||
1691 | if (remote->mirror) | |
1692 | return tracking_for_push_dest(remote, branch->refname, err); | |
1693 | ||
1694 | switch (push_default) { | |
1695 | case PUSH_DEFAULT_NOTHING: | |
1696 | return error_buf(err, _("push has no destination (push.default is 'nothing')")); | |
1697 | ||
1698 | case PUSH_DEFAULT_MATCHING: | |
1699 | case PUSH_DEFAULT_CURRENT: | |
1700 | return tracking_for_push_dest(remote, branch->refname, err); | |
1701 | ||
1702 | case PUSH_DEFAULT_UPSTREAM: | |
1703 | return branch_get_upstream(branch, err); | |
1704 | ||
1705 | case PUSH_DEFAULT_UNSPECIFIED: | |
1706 | case PUSH_DEFAULT_SIMPLE: | |
1707 | { | |
1708 | const char *up, *cur; | |
1709 | ||
1710 | up = branch_get_upstream(branch, err); | |
1711 | if (!up) | |
1712 | return NULL; | |
1713 | cur = tracking_for_push_dest(remote, branch->refname, err); | |
1714 | if (!cur) | |
1715 | return NULL; | |
1716 | if (strcmp(cur, up)) | |
1717 | return error_buf(err, | |
1718 | _("cannot resolve 'simple' push to a single destination")); | |
1719 | return cur; | |
1720 | } | |
1721 | } | |
1722 | ||
1723 | BUG("unhandled push situation"); | |
1724 | } | |
1725 | ||
1726 | const char *branch_get_push(struct branch *branch, struct strbuf *err) | |
1727 | { | |
1728 | if (!branch) | |
1729 | return error_buf(err, _("HEAD does not point to a branch")); | |
1730 | ||
1731 | if (!branch->push_tracking_ref) | |
1732 | branch->push_tracking_ref = branch_get_push_1(branch, err); | |
1733 | return branch->push_tracking_ref; | |
1734 | } | |
1735 | ||
1736 | static int ignore_symref_update(const char *refname) | |
1737 | { | |
1738 | int flag; | |
1739 | ||
1740 | if (!resolve_ref_unsafe(refname, 0, NULL, &flag)) | |
1741 | return 0; /* non-existing refs are OK */ | |
1742 | return (flag & REF_ISSYMREF); | |
1743 | } | |
1744 | ||
1745 | /* | |
1746 | * Create and return a list of (struct ref) consisting of copies of | |
1747 | * each remote_ref that matches refspec. refspec must be a pattern. | |
1748 | * Fill in the copies' peer_ref to describe the local tracking refs to | |
1749 | * which they map. Omit any references that would map to an existing | |
1750 | * local symbolic ref. | |
1751 | */ | |
1752 | static struct ref *get_expanded_map(const struct ref *remote_refs, | |
1753 | const struct refspec_item *refspec) | |
1754 | { | |
1755 | const struct ref *ref; | |
1756 | struct ref *ret = NULL; | |
1757 | struct ref **tail = &ret; | |
1758 | ||
1759 | for (ref = remote_refs; ref; ref = ref->next) { | |
1760 | char *expn_name = NULL; | |
1761 | ||
1762 | if (strchr(ref->name, '^')) | |
1763 | continue; /* a dereference item */ | |
1764 | if (match_name_with_pattern(refspec->src, ref->name, | |
1765 | refspec->dst, &expn_name) && | |
1766 | !ignore_symref_update(expn_name)) { | |
1767 | struct ref *cpy = copy_ref(ref); | |
1768 | ||
1769 | cpy->peer_ref = alloc_ref(expn_name); | |
1770 | if (refspec->force) | |
1771 | cpy->peer_ref->force = 1; | |
1772 | *tail = cpy; | |
1773 | tail = &cpy->next; | |
1774 | } | |
1775 | free(expn_name); | |
1776 | } | |
1777 | ||
1778 | return ret; | |
1779 | } | |
1780 | ||
1781 | static const struct ref *find_ref_by_name_abbrev(const struct ref *refs, const char *name) | |
1782 | { | |
1783 | const struct ref *ref; | |
1784 | const struct ref *best_match = NULL; | |
1785 | int best_score = 0; | |
1786 | ||
1787 | for (ref = refs; ref; ref = ref->next) { | |
1788 | int score = refname_match(name, ref->name); | |
1789 | ||
1790 | if (best_score < score) { | |
1791 | best_match = ref; | |
1792 | best_score = score; | |
1793 | } | |
1794 | } | |
1795 | return best_match; | |
1796 | } | |
1797 | ||
1798 | struct ref *get_remote_ref(const struct ref *remote_refs, const char *name) | |
1799 | { | |
1800 | const struct ref *ref = find_ref_by_name_abbrev(remote_refs, name); | |
1801 | ||
1802 | if (!ref) | |
1803 | return NULL; | |
1804 | ||
1805 | return copy_ref(ref); | |
1806 | } | |
1807 | ||
1808 | static struct ref *get_local_ref(const char *name) | |
1809 | { | |
1810 | if (!name || name[0] == '\0') | |
1811 | return NULL; | |
1812 | ||
1813 | if (starts_with(name, "refs/")) | |
1814 | return alloc_ref(name); | |
1815 | ||
1816 | if (starts_with(name, "heads/") || | |
1817 | starts_with(name, "tags/") || | |
1818 | starts_with(name, "remotes/")) | |
1819 | return alloc_ref_with_prefix("refs/", 5, name); | |
1820 | ||
1821 | return alloc_ref_with_prefix("refs/heads/", 11, name); | |
1822 | } | |
1823 | ||
1824 | int get_fetch_map(const struct ref *remote_refs, | |
1825 | const struct refspec_item *refspec, | |
1826 | struct ref ***tail, | |
1827 | int missing_ok) | |
1828 | { | |
1829 | struct ref *ref_map, **rmp; | |
1830 | ||
1831 | if (refspec->pattern) { | |
1832 | ref_map = get_expanded_map(remote_refs, refspec); | |
1833 | } else { | |
1834 | const char *name = refspec->src[0] ? refspec->src : "HEAD"; | |
1835 | ||
1836 | if (refspec->exact_sha1) { | |
1837 | ref_map = alloc_ref(name); | |
1838 | get_oid_hex(name, &ref_map->old_oid); | |
1839 | ref_map->exact_oid = 1; | |
1840 | } else { | |
1841 | ref_map = get_remote_ref(remote_refs, name); | |
1842 | } | |
1843 | if (!missing_ok && !ref_map) | |
1844 | die(_("couldn't find remote ref %s"), name); | |
1845 | if (ref_map) { | |
1846 | ref_map->peer_ref = get_local_ref(refspec->dst); | |
1847 | if (ref_map->peer_ref && refspec->force) | |
1848 | ref_map->peer_ref->force = 1; | |
1849 | } | |
1850 | } | |
1851 | ||
1852 | for (rmp = &ref_map; *rmp; ) { | |
1853 | if ((*rmp)->peer_ref) { | |
1854 | if (!starts_with((*rmp)->peer_ref->name, "refs/") || | |
1855 | check_refname_format((*rmp)->peer_ref->name, 0)) { | |
1856 | struct ref *ignore = *rmp; | |
1857 | error(_("* Ignoring funny ref '%s' locally"), | |
1858 | (*rmp)->peer_ref->name); | |
1859 | *rmp = (*rmp)->next; | |
1860 | free(ignore->peer_ref); | |
1861 | free(ignore); | |
1862 | continue; | |
1863 | } | |
1864 | } | |
1865 | rmp = &((*rmp)->next); | |
1866 | } | |
1867 | ||
1868 | if (ref_map) | |
1869 | tail_link_ref(ref_map, tail); | |
1870 | ||
1871 | return 0; | |
1872 | } | |
1873 | ||
1874 | int resolve_remote_symref(struct ref *ref, struct ref *list) | |
1875 | { | |
1876 | if (!ref->symref) | |
1877 | return 0; | |
1878 | for (; list; list = list->next) | |
1879 | if (!strcmp(ref->symref, list->name)) { | |
1880 | oidcpy(&ref->old_oid, &list->old_oid); | |
1881 | return 0; | |
1882 | } | |
1883 | return 1; | |
1884 | } | |
1885 | ||
1886 | /* | |
1887 | * Compute the commit ahead/behind values for the pair branch_name, base. | |
1888 | * | |
1889 | * If abf is AHEAD_BEHIND_FULL, compute the full ahead/behind and return the | |
1890 | * counts in *num_ours and *num_theirs. If abf is AHEAD_BEHIND_QUICK, skip | |
1891 | * the (potentially expensive) a/b computation (*num_ours and *num_theirs are | |
1892 | * set to zero). | |
1893 | * | |
1894 | * Returns -1 if num_ours and num_theirs could not be filled in (e.g., ref | |
1895 | * does not exist). Returns 0 if the commits are identical. Returns 1 if | |
1896 | * commits are different. | |
1897 | */ | |
1898 | ||
1899 | static int stat_branch_pair(const char *branch_name, const char *base, | |
1900 | int *num_ours, int *num_theirs, | |
1901 | enum ahead_behind_flags abf) | |
1902 | { | |
1903 | struct object_id oid; | |
1904 | struct commit *ours, *theirs; | |
1905 | struct rev_info revs; | |
1906 | struct argv_array argv = ARGV_ARRAY_INIT; | |
1907 | ||
1908 | /* Cannot stat if what we used to build on no longer exists */ | |
1909 | if (read_ref(base, &oid)) | |
1910 | return -1; | |
1911 | theirs = lookup_commit_reference(the_repository, &oid); | |
1912 | if (!theirs) | |
1913 | return -1; | |
1914 | ||
1915 | if (read_ref(branch_name, &oid)) | |
1916 | return -1; | |
1917 | ours = lookup_commit_reference(the_repository, &oid); | |
1918 | if (!ours) | |
1919 | return -1; | |
1920 | ||
1921 | *num_theirs = *num_ours = 0; | |
1922 | ||
1923 | /* are we the same? */ | |
1924 | if (theirs == ours) | |
1925 | return 0; | |
1926 | if (abf == AHEAD_BEHIND_QUICK) | |
1927 | return 1; | |
1928 | if (abf != AHEAD_BEHIND_FULL) | |
1929 | BUG("stat_branch_pair: invalid abf '%d'", abf); | |
1930 | ||
1931 | /* Run "rev-list --left-right ours...theirs" internally... */ | |
1932 | argv_array_push(&argv, ""); /* ignored */ | |
1933 | argv_array_push(&argv, "--left-right"); | |
1934 | argv_array_pushf(&argv, "%s...%s", | |
1935 | oid_to_hex(&ours->object.oid), | |
1936 | oid_to_hex(&theirs->object.oid)); | |
1937 | argv_array_push(&argv, "--"); | |
1938 | ||
1939 | repo_init_revisions(the_repository, &revs, NULL); | |
1940 | setup_revisions(argv.argc, argv.argv, &revs, NULL); | |
1941 | if (prepare_revision_walk(&revs)) | |
1942 | die(_("revision walk setup failed")); | |
1943 | ||
1944 | /* ... and count the commits on each side. */ | |
1945 | while (1) { | |
1946 | struct commit *c = get_revision(&revs); | |
1947 | if (!c) | |
1948 | break; | |
1949 | if (c->object.flags & SYMMETRIC_LEFT) | |
1950 | (*num_ours)++; | |
1951 | else | |
1952 | (*num_theirs)++; | |
1953 | } | |
1954 | ||
1955 | /* clear object flags smudged by the above traversal */ | |
1956 | clear_commit_marks(ours, ALL_REV_FLAGS); | |
1957 | clear_commit_marks(theirs, ALL_REV_FLAGS); | |
1958 | ||
1959 | argv_array_clear(&argv); | |
1960 | return 1; | |
1961 | } | |
1962 | ||
1963 | /* | |
1964 | * Lookup the tracking branch for the given branch and if present, optionally | |
1965 | * compute the commit ahead/behind values for the pair. | |
1966 | * | |
1967 | * If for_push is true, the tracking branch refers to the push branch, | |
1968 | * otherwise it refers to the upstream branch. | |
1969 | * | |
1970 | * The name of the tracking branch (or NULL if it is not defined) is | |
1971 | * returned via *tracking_name, if it is not itself NULL. | |
1972 | * | |
1973 | * If abf is AHEAD_BEHIND_FULL, compute the full ahead/behind and return the | |
1974 | * counts in *num_ours and *num_theirs. If abf is AHEAD_BEHIND_QUICK, skip | |
1975 | * the (potentially expensive) a/b computation (*num_ours and *num_theirs are | |
1976 | * set to zero). | |
1977 | * | |
1978 | * Returns -1 if num_ours and num_theirs could not be filled in (e.g., no | |
1979 | * upstream defined, or ref does not exist). Returns 0 if the commits are | |
1980 | * identical. Returns 1 if commits are different. | |
1981 | */ | |
1982 | int stat_tracking_info(struct branch *branch, int *num_ours, int *num_theirs, | |
1983 | const char **tracking_name, int for_push, | |
1984 | enum ahead_behind_flags abf) | |
1985 | { | |
1986 | const char *base; | |
1987 | ||
1988 | /* Cannot stat unless we are marked to build on top of somebody else. */ | |
1989 | base = for_push ? branch_get_push(branch, NULL) : | |
1990 | branch_get_upstream(branch, NULL); | |
1991 | if (tracking_name) | |
1992 | *tracking_name = base; | |
1993 | if (!base) | |
1994 | return -1; | |
1995 | ||
1996 | return stat_branch_pair(branch->refname, base, num_ours, num_theirs, abf); | |
1997 | } | |
1998 | ||
1999 | /* | |
2000 | * Return true when there is anything to report, otherwise false. | |
2001 | */ | |
2002 | int format_tracking_info(struct branch *branch, struct strbuf *sb, | |
2003 | enum ahead_behind_flags abf) | |
2004 | { | |
2005 | int ours, theirs, sti; | |
2006 | const char *full_base; | |
2007 | char *base; | |
2008 | int upstream_is_gone = 0; | |
2009 | ||
2010 | sti = stat_tracking_info(branch, &ours, &theirs, &full_base, 0, abf); | |
2011 | if (sti < 0) { | |
2012 | if (!full_base) | |
2013 | return 0; | |
2014 | upstream_is_gone = 1; | |
2015 | } | |
2016 | ||
2017 | base = shorten_unambiguous_ref(full_base, 0); | |
2018 | if (upstream_is_gone) { | |
2019 | strbuf_addf(sb, | |
2020 | _("Your branch is based on '%s', but the upstream is gone.\n"), | |
2021 | base); | |
2022 | if (advice_status_hints) | |
2023 | strbuf_addstr(sb, | |
2024 | _(" (use \"git branch --unset-upstream\" to fixup)\n")); | |
2025 | } else if (!sti) { | |
2026 | strbuf_addf(sb, | |
2027 | _("Your branch is up to date with '%s'.\n"), | |
2028 | base); | |
2029 | } else if (abf == AHEAD_BEHIND_QUICK) { | |
2030 | strbuf_addf(sb, | |
2031 | _("Your branch and '%s' refer to different commits.\n"), | |
2032 | base); | |
2033 | if (advice_status_hints) | |
2034 | strbuf_addf(sb, _(" (use \"%s\" for details)\n"), | |
2035 | "git status --ahead-behind"); | |
2036 | } else if (!theirs) { | |
2037 | strbuf_addf(sb, | |
2038 | Q_("Your branch is ahead of '%s' by %d commit.\n", | |
2039 | "Your branch is ahead of '%s' by %d commits.\n", | |
2040 | ours), | |
2041 | base, ours); | |
2042 | if (advice_status_hints) | |
2043 | strbuf_addstr(sb, | |
2044 | _(" (use \"git push\" to publish your local commits)\n")); | |
2045 | } else if (!ours) { | |
2046 | strbuf_addf(sb, | |
2047 | Q_("Your branch is behind '%s' by %d commit, " | |
2048 | "and can be fast-forwarded.\n", | |
2049 | "Your branch is behind '%s' by %d commits, " | |
2050 | "and can be fast-forwarded.\n", | |
2051 | theirs), | |
2052 | base, theirs); | |
2053 | if (advice_status_hints) | |
2054 | strbuf_addstr(sb, | |
2055 | _(" (use \"git pull\" to update your local branch)\n")); | |
2056 | } else { | |
2057 | strbuf_addf(sb, | |
2058 | Q_("Your branch and '%s' have diverged,\n" | |
2059 | "and have %d and %d different commit each, " | |
2060 | "respectively.\n", | |
2061 | "Your branch and '%s' have diverged,\n" | |
2062 | "and have %d and %d different commits each, " | |
2063 | "respectively.\n", | |
2064 | ours + theirs), | |
2065 | base, ours, theirs); | |
2066 | if (advice_status_hints) | |
2067 | strbuf_addstr(sb, | |
2068 | _(" (use \"git pull\" to merge the remote branch into yours)\n")); | |
2069 | } | |
2070 | free(base); | |
2071 | return 1; | |
2072 | } | |
2073 | ||
2074 | static int one_local_ref(const char *refname, const struct object_id *oid, | |
2075 | int flag, void *cb_data) | |
2076 | { | |
2077 | struct ref ***local_tail = cb_data; | |
2078 | struct ref *ref; | |
2079 | ||
2080 | /* we already know it starts with refs/ to get here */ | |
2081 | if (check_refname_format(refname + 5, 0)) | |
2082 | return 0; | |
2083 | ||
2084 | ref = alloc_ref(refname); | |
2085 | oidcpy(&ref->new_oid, oid); | |
2086 | **local_tail = ref; | |
2087 | *local_tail = &ref->next; | |
2088 | return 0; | |
2089 | } | |
2090 | ||
2091 | struct ref *get_local_heads(void) | |
2092 | { | |
2093 | struct ref *local_refs = NULL, **local_tail = &local_refs; | |
2094 | ||
2095 | for_each_ref(one_local_ref, &local_tail); | |
2096 | return local_refs; | |
2097 | } | |
2098 | ||
2099 | struct ref *guess_remote_head(const struct ref *head, | |
2100 | const struct ref *refs, | |
2101 | int all) | |
2102 | { | |
2103 | const struct ref *r; | |
2104 | struct ref *list = NULL; | |
2105 | struct ref **tail = &list; | |
2106 | ||
2107 | if (!head) | |
2108 | return NULL; | |
2109 | ||
2110 | /* | |
2111 | * Some transports support directly peeking at | |
2112 | * where HEAD points; if that is the case, then | |
2113 | * we don't have to guess. | |
2114 | */ | |
2115 | if (head->symref) | |
2116 | return copy_ref(find_ref_by_name(refs, head->symref)); | |
2117 | ||
2118 | /* If refs/heads/master could be right, it is. */ | |
2119 | if (!all) { | |
2120 | r = find_ref_by_name(refs, "refs/heads/master"); | |
2121 | if (r && oideq(&r->old_oid, &head->old_oid)) | |
2122 | return copy_ref(r); | |
2123 | } | |
2124 | ||
2125 | /* Look for another ref that points there */ | |
2126 | for (r = refs; r; r = r->next) { | |
2127 | if (r != head && | |
2128 | starts_with(r->name, "refs/heads/") && | |
2129 | oideq(&r->old_oid, &head->old_oid)) { | |
2130 | *tail = copy_ref(r); | |
2131 | tail = &((*tail)->next); | |
2132 | if (!all) | |
2133 | break; | |
2134 | } | |
2135 | } | |
2136 | ||
2137 | return list; | |
2138 | } | |
2139 | ||
2140 | struct stale_heads_info { | |
2141 | struct string_list *ref_names; | |
2142 | struct ref **stale_refs_tail; | |
2143 | struct refspec *rs; | |
2144 | }; | |
2145 | ||
2146 | static int get_stale_heads_cb(const char *refname, const struct object_id *oid, | |
2147 | int flags, void *cb_data) | |
2148 | { | |
2149 | struct stale_heads_info *info = cb_data; | |
2150 | struct string_list matches = STRING_LIST_INIT_DUP; | |
2151 | struct refspec_item query; | |
2152 | int i, stale = 1; | |
2153 | memset(&query, 0, sizeof(struct refspec_item)); | |
2154 | query.dst = (char *)refname; | |
2155 | ||
2156 | query_refspecs_multiple(info->rs, &query, &matches); | |
2157 | if (matches.nr == 0) | |
2158 | goto clean_exit; /* No matches */ | |
2159 | ||
2160 | /* | |
2161 | * If we did find a suitable refspec and it's not a symref and | |
2162 | * it's not in the list of refs that currently exist in that | |
2163 | * remote, we consider it to be stale. In order to deal with | |
2164 | * overlapping refspecs, we need to go over all of the | |
2165 | * matching refs. | |
2166 | */ | |
2167 | if (flags & REF_ISSYMREF) | |
2168 | goto clean_exit; | |
2169 | ||
2170 | for (i = 0; stale && i < matches.nr; i++) | |
2171 | if (string_list_has_string(info->ref_names, matches.items[i].string)) | |
2172 | stale = 0; | |
2173 | ||
2174 | if (stale) { | |
2175 | struct ref *ref = make_linked_ref(refname, &info->stale_refs_tail); | |
2176 | oidcpy(&ref->new_oid, oid); | |
2177 | } | |
2178 | ||
2179 | clean_exit: | |
2180 | string_list_clear(&matches, 0); | |
2181 | return 0; | |
2182 | } | |
2183 | ||
2184 | struct ref *get_stale_heads(struct refspec *rs, struct ref *fetch_map) | |
2185 | { | |
2186 | struct ref *ref, *stale_refs = NULL; | |
2187 | struct string_list ref_names = STRING_LIST_INIT_NODUP; | |
2188 | struct stale_heads_info info; | |
2189 | ||
2190 | info.ref_names = &ref_names; | |
2191 | info.stale_refs_tail = &stale_refs; | |
2192 | info.rs = rs; | |
2193 | for (ref = fetch_map; ref; ref = ref->next) | |
2194 | string_list_append(&ref_names, ref->name); | |
2195 | string_list_sort(&ref_names); | |
2196 | for_each_ref(get_stale_heads_cb, &info); | |
2197 | string_list_clear(&ref_names, 0); | |
2198 | return stale_refs; | |
2199 | } | |
2200 | ||
2201 | /* | |
2202 | * Compare-and-swap | |
2203 | */ | |
2204 | static void clear_cas_option(struct push_cas_option *cas) | |
2205 | { | |
2206 | int i; | |
2207 | ||
2208 | for (i = 0; i < cas->nr; i++) | |
2209 | free(cas->entry[i].refname); | |
2210 | free(cas->entry); | |
2211 | memset(cas, 0, sizeof(*cas)); | |
2212 | } | |
2213 | ||
2214 | static struct push_cas *add_cas_entry(struct push_cas_option *cas, | |
2215 | const char *refname, | |
2216 | size_t refnamelen) | |
2217 | { | |
2218 | struct push_cas *entry; | |
2219 | ALLOC_GROW(cas->entry, cas->nr + 1, cas->alloc); | |
2220 | entry = &cas->entry[cas->nr++]; | |
2221 | memset(entry, 0, sizeof(*entry)); | |
2222 | entry->refname = xmemdupz(refname, refnamelen); | |
2223 | return entry; | |
2224 | } | |
2225 | ||
2226 | static int parse_push_cas_option(struct push_cas_option *cas, const char *arg, int unset) | |
2227 | { | |
2228 | const char *colon; | |
2229 | struct push_cas *entry; | |
2230 | ||
2231 | if (unset) { | |
2232 | /* "--no-<option>" */ | |
2233 | clear_cas_option(cas); | |
2234 | return 0; | |
2235 | } | |
2236 | ||
2237 | if (!arg) { | |
2238 | /* just "--<option>" */ | |
2239 | cas->use_tracking_for_rest = 1; | |
2240 | return 0; | |
2241 | } | |
2242 | ||
2243 | /* "--<option>=refname" or "--<option>=refname:value" */ | |
2244 | colon = strchrnul(arg, ':'); | |
2245 | entry = add_cas_entry(cas, arg, colon - arg); | |
2246 | if (!*colon) | |
2247 | entry->use_tracking = 1; | |
2248 | else if (!colon[1]) | |
2249 | oidclr(&entry->expect); | |
2250 | else if (get_oid(colon + 1, &entry->expect)) | |
2251 | return error(_("cannot parse expected object name '%s'"), | |
2252 | colon + 1); | |
2253 | return 0; | |
2254 | } | |
2255 | ||
2256 | int parseopt_push_cas_option(const struct option *opt, const char *arg, int unset) | |
2257 | { | |
2258 | return parse_push_cas_option(opt->value, arg, unset); | |
2259 | } | |
2260 | ||
2261 | int is_empty_cas(const struct push_cas_option *cas) | |
2262 | { | |
2263 | return !cas->use_tracking_for_rest && !cas->nr; | |
2264 | } | |
2265 | ||
2266 | /* | |
2267 | * Look at remote.fetch refspec and see if we have a remote | |
2268 | * tracking branch for the refname there. Fill its current | |
2269 | * value in sha1[]. | |
2270 | * If we cannot do so, return negative to signal an error. | |
2271 | */ | |
2272 | static int remote_tracking(struct remote *remote, const char *refname, | |
2273 | struct object_id *oid) | |
2274 | { | |
2275 | char *dst; | |
2276 | ||
2277 | dst = apply_refspecs(&remote->fetch, refname); | |
2278 | if (!dst) | |
2279 | return -1; /* no tracking ref for refname at remote */ | |
2280 | if (read_ref(dst, oid)) | |
2281 | return -1; /* we know what the tracking ref is but we cannot read it */ | |
2282 | return 0; | |
2283 | } | |
2284 | ||
2285 | static void apply_cas(struct push_cas_option *cas, | |
2286 | struct remote *remote, | |
2287 | struct ref *ref) | |
2288 | { | |
2289 | int i; | |
2290 | ||
2291 | /* Find an explicit --<option>=<name>[:<value>] entry */ | |
2292 | for (i = 0; i < cas->nr; i++) { | |
2293 | struct push_cas *entry = &cas->entry[i]; | |
2294 | if (!refname_match(entry->refname, ref->name)) | |
2295 | continue; | |
2296 | ref->expect_old_sha1 = 1; | |
2297 | if (!entry->use_tracking) | |
2298 | oidcpy(&ref->old_oid_expect, &entry->expect); | |
2299 | else if (remote_tracking(remote, ref->name, &ref->old_oid_expect)) | |
2300 | oidclr(&ref->old_oid_expect); | |
2301 | return; | |
2302 | } | |
2303 | ||
2304 | /* Are we using "--<option>" to cover all? */ | |
2305 | if (!cas->use_tracking_for_rest) | |
2306 | return; | |
2307 | ||
2308 | ref->expect_old_sha1 = 1; | |
2309 | if (remote_tracking(remote, ref->name, &ref->old_oid_expect)) | |
2310 | oidclr(&ref->old_oid_expect); | |
2311 | } | |
2312 | ||
2313 | void apply_push_cas(struct push_cas_option *cas, | |
2314 | struct remote *remote, | |
2315 | struct ref *remote_refs) | |
2316 | { | |
2317 | struct ref *ref; | |
2318 | for (ref = remote_refs; ref; ref = ref->next) | |
2319 | apply_cas(cas, remote, ref); | |
2320 | } |