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