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Commit | Line | Data |
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5751f490 | 1 | #include "cache.h" |
b2141fc1 | 2 | #include "config.h" |
5751f490 DB |
3 | #include "remote.h" |
4 | #include "refs.h" | |
ec0cb496 | 5 | #include "refspec.h" |
cbd53a21 | 6 | #include "object-store.h" |
6d21bf96 JH |
7 | #include "commit.h" |
8 | #include "diff.h" | |
9 | #include "revision.h" | |
8ca12c0d | 10 | #include "dir.h" |
ec8452d5 | 11 | #include "tag.h" |
73cf0822 | 12 | #include "string-list.h" |
ed81c76b | 13 | #include "mergesort.h" |
dbbcd44f | 14 | #include "strvec.h" |
64043556 | 15 | #include "commit-reach.h" |
dd8dd300 | 16 | #include "advice.h" |
5751f490 | 17 | |
6ddba5e2 FC |
18 | enum map_direction { FROM_SRC, FROM_DST }; |
19 | ||
844112ca JH |
20 | struct counted_string { |
21 | size_t len; | |
22 | const char *s; | |
23 | }; | |
55029ae4 | 24 | |
0a4da29d DB |
25 | static int valid_remote(const struct remote *remote) |
26 | { | |
c578f51d | 27 | return (!!remote->url) || (!!remote->foreign_vcs); |
0a4da29d DB |
28 | } |
29 | ||
d071d942 | 30 | static const char *alias_url(const char *url, struct rewrites *r) |
55029ae4 DB |
31 | { |
32 | int i, j; | |
844112ca JH |
33 | struct counted_string *longest; |
34 | int longest_i; | |
35 | ||
36 | longest = NULL; | |
37 | longest_i = -1; | |
d071d942 JT |
38 | for (i = 0; i < r->rewrite_nr; i++) { |
39 | if (!r->rewrite[i]) | |
55029ae4 | 40 | continue; |
d071d942 | 41 | for (j = 0; j < r->rewrite[i]->instead_of_nr; j++) { |
59556548 | 42 | if (starts_with(url, r->rewrite[i]->instead_of[j].s) && |
844112ca | 43 | (!longest || |
d071d942 JT |
44 | longest->len < r->rewrite[i]->instead_of[j].len)) { |
45 | longest = &(r->rewrite[i]->instead_of[j]); | |
844112ca | 46 | longest_i = i; |
55029ae4 DB |
47 | } |
48 | } | |
49 | } | |
844112ca JH |
50 | if (!longest) |
51 | return url; | |
52 | ||
75faa45a | 53 | return xstrfmt("%s%s", r->rewrite[longest_i]->base, url + longest->len); |
55029ae4 DB |
54 | } |
55 | ||
28b91f8a | 56 | static void add_url(struct remote *remote, const char *url) |
5751f490 | 57 | { |
2d31347b DB |
58 | ALLOC_GROW(remote->url, remote->url_nr + 1, remote->url_alloc); |
59 | remote->url[remote->url_nr++] = url; | |
5751f490 DB |
60 | } |
61 | ||
20346234 MG |
62 | static void add_pushurl(struct remote *remote, const char *pushurl) |
63 | { | |
64 | ALLOC_GROW(remote->pushurl, remote->pushurl_nr + 1, remote->pushurl_alloc); | |
65 | remote->pushurl[remote->pushurl_nr++] = pushurl; | |
66 | } | |
67 | ||
085b98f6 GC |
68 | static void add_pushurl_alias(struct remote_state *remote_state, |
69 | struct remote *remote, const char *url) | |
1c2eafb8 | 70 | { |
085b98f6 | 71 | const char *pushurl = alias_url(url, &remote_state->rewrites_push); |
1c2eafb8 JT |
72 | if (pushurl != url) |
73 | add_pushurl(remote, pushurl); | |
74 | } | |
75 | ||
085b98f6 GC |
76 | static void add_url_alias(struct remote_state *remote_state, |
77 | struct remote *remote, const char *url) | |
1c2eafb8 | 78 | { |
085b98f6 GC |
79 | add_url(remote, alias_url(url, &remote_state->rewrites)); |
80 | add_pushurl_alias(remote_state, remote, url); | |
1c2eafb8 JT |
81 | } |
82 | ||
d0da003d PR |
83 | struct remotes_hash_key { |
84 | const char *str; | |
85 | int len; | |
86 | }; | |
87 | ||
7663cdc8 | 88 | static int remotes_hash_cmp(const void *unused_cmp_data, |
939af16e EW |
89 | const struct hashmap_entry *eptr, |
90 | const struct hashmap_entry *entry_or_key, | |
45dcb35f | 91 | const void *keydata) |
d0da003d | 92 | { |
939af16e | 93 | const struct remote *a, *b; |
45dcb35f SB |
94 | const struct remotes_hash_key *key = keydata; |
95 | ||
939af16e EW |
96 | a = container_of(eptr, const struct remote, ent); |
97 | b = container_of(entry_or_key, const struct remote, ent); | |
98 | ||
d0da003d PR |
99 | if (key) |
100 | return strncmp(a->name, key->str, key->len) || a->name[key->len]; | |
101 | else | |
102 | return strcmp(a->name, b->name); | |
103 | } | |
104 | ||
085b98f6 GC |
105 | static struct remote *make_remote(struct remote_state *remote_state, |
106 | const char *name, int len) | |
5751f490 | 107 | { |
6540b716 | 108 | struct remote *ret; |
d0da003d | 109 | struct remotes_hash_key lookup; |
f23a4651 | 110 | struct hashmap_entry lookup_entry, *e; |
5751f490 | 111 | |
d0da003d PR |
112 | if (!len) |
113 | len = strlen(name); | |
114 | ||
d0da003d PR |
115 | lookup.str = name; |
116 | lookup.len = len; | |
117 | hashmap_entry_init(&lookup_entry, memhash(name, len)); | |
118 | ||
085b98f6 | 119 | e = hashmap_get(&remote_state->remotes_hash, &lookup_entry, &lookup); |
f23a4651 EW |
120 | if (e) |
121 | return container_of(e, struct remote, ent); | |
5751f490 | 122 | |
ca56dadb | 123 | CALLOC_ARRAY(ret, 1); |
737c5a9c | 124 | ret->prune = -1; /* unspecified */ |
97716d21 | 125 | ret->prune_tags = -1; /* unspecified */ |
6bdb304b BW |
126 | ret->name = xstrndup(name, len); |
127 | refspec_init(&ret->push, REFSPEC_PUSH); | |
e5349abf | 128 | refspec_init(&ret->fetch, REFSPEC_FETCH); |
6bdb304b | 129 | |
085b98f6 GC |
130 | ALLOC_GROW(remote_state->remotes, remote_state->remotes_nr + 1, |
131 | remote_state->remotes_alloc); | |
132 | remote_state->remotes[remote_state->remotes_nr++] = ret; | |
d0da003d | 133 | |
d22245a2 | 134 | hashmap_entry_init(&ret->ent, lookup_entry.hash); |
085b98f6 | 135 | if (hashmap_put_entry(&remote_state->remotes_hash, ret, ent)) |
6540b716 | 136 | BUG("hashmap_put overwrote entry after hashmap_get returned NULL"); |
2d31347b | 137 | return ret; |
5751f490 DB |
138 | } |
139 | ||
fd3cb050 GC |
140 | static void remote_clear(struct remote *remote) |
141 | { | |
142 | int i; | |
143 | ||
144 | free((char *)remote->name); | |
145 | free((char *)remote->foreign_vcs); | |
146 | ||
147 | for (i = 0; i < remote->url_nr; i++) { | |
148 | free((char *)remote->url[i]); | |
149 | } | |
150 | FREE_AND_NULL(remote->pushurl); | |
151 | ||
152 | for (i = 0; i < remote->pushurl_nr; i++) { | |
153 | free((char *)remote->pushurl[i]); | |
154 | } | |
155 | FREE_AND_NULL(remote->pushurl); | |
156 | free((char *)remote->receivepack); | |
157 | free((char *)remote->uploadpack); | |
158 | FREE_AND_NULL(remote->http_proxy); | |
159 | FREE_AND_NULL(remote->http_proxy_authmethod); | |
160 | } | |
161 | ||
cf818348 DB |
162 | static void add_merge(struct branch *branch, const char *name) |
163 | { | |
2d31347b DB |
164 | ALLOC_GROW(branch->merge_name, branch->merge_nr + 1, |
165 | branch->merge_alloc); | |
166 | branch->merge_name[branch->merge_nr++] = name; | |
cf818348 DB |
167 | } |
168 | ||
4a2dcb1a GC |
169 | struct branches_hash_key { |
170 | const char *str; | |
171 | int len; | |
172 | }; | |
173 | ||
174 | static int branches_hash_cmp(const void *unused_cmp_data, | |
175 | const struct hashmap_entry *eptr, | |
176 | const struct hashmap_entry *entry_or_key, | |
177 | const void *keydata) | |
178 | { | |
179 | const struct branch *a, *b; | |
180 | const struct branches_hash_key *key = keydata; | |
181 | ||
182 | a = container_of(eptr, const struct branch, ent); | |
183 | b = container_of(entry_or_key, const struct branch, ent); | |
184 | ||
185 | if (key) | |
186 | return strncmp(a->name, key->str, key->len) || | |
187 | a->name[key->len]; | |
188 | else | |
189 | return strcmp(a->name, b->name); | |
190 | } | |
191 | ||
192 | static struct branch *find_branch(struct remote_state *remote_state, | |
193 | const char *name, size_t len) | |
194 | { | |
195 | struct branches_hash_key lookup; | |
196 | struct hashmap_entry lookup_entry, *e; | |
197 | ||
198 | if (!len) | |
199 | len = strlen(name); | |
200 | ||
201 | lookup.str = name; | |
202 | lookup.len = len; | |
203 | hashmap_entry_init(&lookup_entry, memhash(name, len)); | |
204 | ||
205 | e = hashmap_get(&remote_state->branches_hash, &lookup_entry, &lookup); | |
206 | if (e) | |
207 | return container_of(e, struct branch, ent); | |
208 | ||
209 | return NULL; | |
210 | } | |
211 | ||
212 | static void die_on_missing_branch(struct repository *repo, | |
213 | struct branch *branch) | |
214 | { | |
215 | /* branch == NULL is always valid because it represents detached HEAD. */ | |
216 | if (branch && | |
217 | branch != find_branch(repo->remote_state, branch->name, 0)) | |
218 | die("branch %s was not found in the repository", branch->name); | |
219 | } | |
220 | ||
085b98f6 GC |
221 | static struct branch *make_branch(struct remote_state *remote_state, |
222 | const char *name, size_t len) | |
cf818348 | 223 | { |
2d31347b | 224 | struct branch *ret; |
cf818348 | 225 | |
4a2dcb1a GC |
226 | ret = find_branch(remote_state, name, len); |
227 | if (ret) | |
228 | return ret; | |
cf818348 | 229 | |
ca56dadb | 230 | CALLOC_ARRAY(ret, 1); |
021ba32a | 231 | ret->name = xstrndup(name, len); |
fa3f60b7 | 232 | ret->refname = xstrfmt("refs/heads/%s", ret->name); |
cf818348 | 233 | |
4a2dcb1a GC |
234 | hashmap_entry_init(&ret->ent, memhash(name, len)); |
235 | if (hashmap_put_entry(&remote_state->branches_hash, ret, ent)) | |
236 | BUG("hashmap_put overwrote entry after hashmap_get returned NULL"); | |
2d31347b | 237 | return ret; |
cf818348 DB |
238 | } |
239 | ||
021ba32a JK |
240 | static struct rewrite *make_rewrite(struct rewrites *r, |
241 | const char *base, size_t len) | |
55029ae4 DB |
242 | { |
243 | struct rewrite *ret; | |
244 | int i; | |
245 | ||
d071d942 | 246 | for (i = 0; i < r->rewrite_nr; i++) { |
021ba32a JK |
247 | if (len == r->rewrite[i]->baselen && |
248 | !strncmp(base, r->rewrite[i]->base, len)) | |
d071d942 | 249 | return r->rewrite[i]; |
55029ae4 DB |
250 | } |
251 | ||
d071d942 | 252 | ALLOC_GROW(r->rewrite, r->rewrite_nr + 1, r->rewrite_alloc); |
ca56dadb | 253 | CALLOC_ARRAY(ret, 1); |
d071d942 | 254 | r->rewrite[r->rewrite_nr++] = ret; |
021ba32a JK |
255 | ret->base = xstrndup(base, len); |
256 | ret->baselen = len; | |
55029ae4 DB |
257 | return ret; |
258 | } | |
259 | ||
260 | static void add_instead_of(struct rewrite *rewrite, const char *instead_of) | |
261 | { | |
262 | ALLOC_GROW(rewrite->instead_of, rewrite->instead_of_nr + 1, rewrite->instead_of_alloc); | |
844112ca JH |
263 | rewrite->instead_of[rewrite->instead_of_nr].s = instead_of; |
264 | rewrite->instead_of[rewrite->instead_of_nr].len = strlen(instead_of); | |
265 | rewrite->instead_of_nr++; | |
55029ae4 DB |
266 | } |
267 | ||
0e265a92 JK |
268 | static const char *skip_spaces(const char *s) |
269 | { | |
270 | while (isspace(*s)) | |
271 | s++; | |
272 | return s; | |
273 | } | |
274 | ||
085b98f6 GC |
275 | static void read_remotes_file(struct remote_state *remote_state, |
276 | struct remote *remote) | |
5751f490 | 277 | { |
0e265a92 | 278 | struct strbuf buf = STRBUF_INIT; |
e9d983f1 | 279 | FILE *f = fopen_or_warn(git_path("remotes/%s", remote->name), "r"); |
5751f490 DB |
280 | |
281 | if (!f) | |
282 | return; | |
e459b073 | 283 | remote->configured_in_repo = 1; |
89cf4c70 | 284 | remote->origin = REMOTE_REMOTES; |
18814d0e | 285 | while (strbuf_getline(&buf, f) != EOF) { |
0e265a92 | 286 | const char *v; |
5751f490 | 287 | |
0e265a92 | 288 | strbuf_rtrim(&buf); |
5751f490 | 289 | |
0e265a92 | 290 | if (skip_prefix(buf.buf, "URL:", &v)) |
085b98f6 GC |
291 | add_url_alias(remote_state, remote, |
292 | xstrdup(skip_spaces(v))); | |
0e265a92 | 293 | else if (skip_prefix(buf.buf, "Push:", &v)) |
6bdb304b | 294 | refspec_append(&remote->push, skip_spaces(v)); |
0e265a92 | 295 | else if (skip_prefix(buf.buf, "Pull:", &v)) |
e5349abf | 296 | refspec_append(&remote->fetch, skip_spaces(v)); |
5751f490 | 297 | } |
0e265a92 | 298 | strbuf_release(&buf); |
5751f490 DB |
299 | fclose(f); |
300 | } | |
301 | ||
085b98f6 GC |
302 | static void read_branches_file(struct remote_state *remote_state, |
303 | struct remote *remote) | |
5751f490 | 304 | { |
cf818348 | 305 | char *frag; |
f28e3ab2 | 306 | struct strbuf buf = STRBUF_INIT; |
e9d983f1 | 307 | FILE *f = fopen_or_warn(git_path("branches/%s", remote->name), "r"); |
5751f490 DB |
308 | |
309 | if (!f) | |
310 | return; | |
f28e3ab2 | 311 | |
8f309aeb | 312 | strbuf_getline_lf(&buf, f); |
0fb19906 | 313 | fclose(f); |
f28e3ab2 JK |
314 | strbuf_trim(&buf); |
315 | if (!buf.len) { | |
316 | strbuf_release(&buf); | |
5751f490 | 317 | return; |
f28e3ab2 JK |
318 | } |
319 | ||
e459b073 | 320 | remote->configured_in_repo = 1; |
89cf4c70 | 321 | remote->origin = REMOTE_BRANCHES; |
472fa4cd DB |
322 | |
323 | /* | |
55cfde25 | 324 | * The branches file would have URL and optionally |
a471214b | 325 | * #branch specified. The default (or specified) branch is |
f28e3ab2 JK |
326 | * fetched and stored in the local branch matching the |
327 | * remote name. | |
472fa4cd | 328 | */ |
f28e3ab2 JK |
329 | frag = strchr(buf.buf, '#'); |
330 | if (frag) | |
cf818348 | 331 | *(frag++) = '\0'; |
f28e3ab2 | 332 | else |
cc0f13c5 | 333 | frag = (char *)git_default_branch_name(0); |
f28e3ab2 | 334 | |
085b98f6 | 335 | add_url_alias(remote_state, remote, strbuf_detach(&buf, NULL)); |
1af8b8c0 RS |
336 | refspec_appendf(&remote->fetch, "refs/heads/%s:refs/heads/%s", |
337 | frag, remote->name); | |
55cfde25 | 338 | |
18afe101 MK |
339 | /* |
340 | * Cogito compatible push: push current HEAD to remote #branch | |
341 | * (master if missing) | |
342 | */ | |
1af8b8c0 | 343 | refspec_appendf(&remote->push, "HEAD:refs/heads/%s", frag); |
d71ab174 | 344 | remote->fetch_tags = 1; /* always auto-follow */ |
5751f490 DB |
345 | } |
346 | ||
ef90d6d4 | 347 | static int handle_config(const char *key, const char *value, void *cb) |
5751f490 DB |
348 | { |
349 | const char *name; | |
f5914f4b | 350 | size_t namelen; |
5751f490 DB |
351 | const char *subkey; |
352 | struct remote *remote; | |
cf818348 | 353 | struct branch *branch; |
085b98f6 GC |
354 | struct remote_state *remote_state = cb; |
355 | ||
bc60f8a7 TG |
356 | if (parse_config_key(key, "branch", &name, &namelen, &subkey) >= 0) { |
357 | if (!name) | |
cf818348 | 358 | return 0; |
085b98f6 | 359 | branch = make_branch(remote_state, name, namelen); |
bc60f8a7 | 360 | if (!strcmp(subkey, "remote")) { |
e41bf352 | 361 | return git_config_string(&branch->remote_name, key, value); |
bc60f8a7 | 362 | } else if (!strcmp(subkey, "pushremote")) { |
da66b274 | 363 | return git_config_string(&branch->pushremote_name, key, value); |
bc60f8a7 | 364 | } else if (!strcmp(subkey, "merge")) { |
d2370cc2 JH |
365 | if (!value) |
366 | return config_error_nonbool(key); | |
cf818348 | 367 | add_merge(branch, xstrdup(value)); |
d2370cc2 | 368 | } |
cf818348 | 369 | return 0; |
5751f490 | 370 | } |
bc60f8a7 | 371 | if (parse_config_key(key, "url", &name, &namelen, &subkey) >= 0) { |
55029ae4 | 372 | struct rewrite *rewrite; |
bc60f8a7 | 373 | if (!name) |
55029ae4 | 374 | return 0; |
bc60f8a7 | 375 | if (!strcmp(subkey, "insteadof")) { |
1c2eafb8 JT |
376 | if (!value) |
377 | return config_error_nonbool(key); | |
085b98f6 GC |
378 | rewrite = make_rewrite(&remote_state->rewrites, name, |
379 | namelen); | |
1c2eafb8 | 380 | add_instead_of(rewrite, xstrdup(value)); |
bc60f8a7 | 381 | } else if (!strcmp(subkey, "pushinsteadof")) { |
55029ae4 DB |
382 | if (!value) |
383 | return config_error_nonbool(key); | |
085b98f6 GC |
384 | rewrite = make_rewrite(&remote_state->rewrites_push, |
385 | name, namelen); | |
55029ae4 DB |
386 | add_instead_of(rewrite, xstrdup(value)); |
387 | } | |
388 | } | |
224c2171 | 389 | |
bc60f8a7 | 390 | if (parse_config_key(key, "remote", &name, &namelen, &subkey) < 0) |
5751f490 | 391 | return 0; |
224c2171 RR |
392 | |
393 | /* Handle remote.* variables */ | |
bc60f8a7 | 394 | if (!name && !strcmp(subkey, "pushdefault")) |
085b98f6 GC |
395 | return git_config_string(&remote_state->pushremote_name, key, |
396 | value); | |
224c2171 | 397 | |
bc60f8a7 TG |
398 | if (!name) |
399 | return 0; | |
224c2171 | 400 | /* Handle remote.<name>.* variables */ |
c82efafc | 401 | if (*name == '/') { |
0b9c3afd | 402 | warning(_("config remote shorthand cannot begin with '/': %s"), |
c82efafc BC |
403 | name); |
404 | return 0; | |
405 | } | |
085b98f6 | 406 | remote = make_remote(remote_state, name, namelen); |
89cf4c70 | 407 | remote->origin = REMOTE_CONFIG; |
6dc905d9 | 408 | if (current_config_scope() == CONFIG_SCOPE_LOCAL || |
08e9df23 | 409 | current_config_scope() == CONFIG_SCOPE_WORKTREE) |
e459b073 | 410 | remote->configured_in_repo = 1; |
bc60f8a7 | 411 | if (!strcmp(subkey, "mirror")) |
84bb2dfd | 412 | remote->mirror = git_config_bool(key, value); |
bc60f8a7 | 413 | else if (!strcmp(subkey, "skipdefaultupdate")) |
84bb2dfd | 414 | remote->skip_default_update = git_config_bool(key, value); |
bc60f8a7 | 415 | else if (!strcmp(subkey, "skipfetchall")) |
7cc91a2f | 416 | remote->skip_default_update = git_config_bool(key, value); |
bc60f8a7 | 417 | else if (!strcmp(subkey, "prune")) |
737c5a9c | 418 | remote->prune = git_config_bool(key, value); |
97716d21 ÆAB |
419 | else if (!strcmp(subkey, "prunetags")) |
420 | remote->prune_tags = git_config_bool(key, value); | |
bc60f8a7 | 421 | else if (!strcmp(subkey, "url")) { |
84bb2dfd PB |
422 | const char *v; |
423 | if (git_config_string(&v, key, value)) | |
424 | return -1; | |
425 | add_url(remote, v); | |
bc60f8a7 | 426 | } else if (!strcmp(subkey, "pushurl")) { |
20346234 MG |
427 | const char *v; |
428 | if (git_config_string(&v, key, value)) | |
429 | return -1; | |
430 | add_pushurl(remote, v); | |
bc60f8a7 | 431 | } else if (!strcmp(subkey, "push")) { |
84bb2dfd PB |
432 | const char *v; |
433 | if (git_config_string(&v, key, value)) | |
434 | return -1; | |
6bdb304b BW |
435 | refspec_append(&remote->push, v); |
436 | free((char *)v); | |
bc60f8a7 | 437 | } else if (!strcmp(subkey, "fetch")) { |
84bb2dfd PB |
438 | const char *v; |
439 | if (git_config_string(&v, key, value)) | |
440 | return -1; | |
e5349abf BW |
441 | refspec_append(&remote->fetch, v); |
442 | free((char *)v); | |
bc60f8a7 | 443 | } else if (!strcmp(subkey, "receivepack")) { |
84bb2dfd PB |
444 | const char *v; |
445 | if (git_config_string(&v, key, value)) | |
446 | return -1; | |
5751f490 | 447 | if (!remote->receivepack) |
84bb2dfd | 448 | remote->receivepack = v; |
5751f490 | 449 | else |
0b9c3afd | 450 | error(_("more than one receivepack given, using the first")); |
bc60f8a7 | 451 | } else if (!strcmp(subkey, "uploadpack")) { |
84bb2dfd PB |
452 | const char *v; |
453 | if (git_config_string(&v, key, value)) | |
454 | return -1; | |
0012ba21 | 455 | if (!remote->uploadpack) |
84bb2dfd | 456 | remote->uploadpack = v; |
0012ba21 | 457 | else |
0b9c3afd | 458 | error(_("more than one uploadpack given, using the first")); |
bc60f8a7 | 459 | } else if (!strcmp(subkey, "tagopt")) { |
d71ab174 DB |
460 | if (!strcmp(value, "--no-tags")) |
461 | remote->fetch_tags = -1; | |
944163a4 ST |
462 | else if (!strcmp(value, "--tags")) |
463 | remote->fetch_tags = 2; | |
bc60f8a7 | 464 | } else if (!strcmp(subkey, "proxy")) { |
84bb2dfd PB |
465 | return git_config_string((const char **)&remote->http_proxy, |
466 | key, value); | |
bc60f8a7 | 467 | } else if (!strcmp(subkey, "proxyauthmethod")) { |
ef976395 KF |
468 | return git_config_string((const char **)&remote->http_proxy_authmethod, |
469 | key, value); | |
bc60f8a7 | 470 | } else if (!strcmp(subkey, "vcs")) { |
c578f51d | 471 | return git_config_string(&remote->foreign_vcs, key, value); |
84bb2dfd | 472 | } |
5751f490 DB |
473 | return 0; |
474 | } | |
475 | ||
085b98f6 | 476 | static void alias_all_urls(struct remote_state *remote_state) |
55029ae4 DB |
477 | { |
478 | int i, j; | |
085b98f6 | 479 | for (i = 0; i < remote_state->remotes_nr; i++) { |
1c2eafb8 | 480 | int add_pushurl_aliases; |
085b98f6 | 481 | if (!remote_state->remotes[i]) |
55029ae4 | 482 | continue; |
085b98f6 GC |
483 | for (j = 0; j < remote_state->remotes[i]->pushurl_nr; j++) { |
484 | remote_state->remotes[i]->pushurl[j] = | |
485 | alias_url(remote_state->remotes[i]->pushurl[j], | |
486 | &remote_state->rewrites); | |
20346234 | 487 | } |
085b98f6 GC |
488 | add_pushurl_aliases = remote_state->remotes[i]->pushurl_nr == 0; |
489 | for (j = 0; j < remote_state->remotes[i]->url_nr; j++) { | |
1c2eafb8 | 490 | if (add_pushurl_aliases) |
fd3cb050 | 491 | add_pushurl_alias( |
085b98f6 GC |
492 | remote_state, remote_state->remotes[i], |
493 | remote_state->remotes[i]->url[j]); | |
494 | remote_state->remotes[i]->url[j] = | |
495 | alias_url(remote_state->remotes[i]->url[j], | |
496 | &remote_state->rewrites); | |
1c2eafb8 | 497 | } |
55029ae4 DB |
498 | } |
499 | } | |
500 | ||
085b98f6 | 501 | static void read_config(struct repository *repo) |
5751f490 | 502 | { |
5751f490 | 503 | int flag; |
e41bf352 | 504 | |
085b98f6 | 505 | if (repo->remote_state->initialized) |
5751f490 | 506 | return; |
085b98f6 | 507 | repo->remote_state->initialized = 1; |
e41bf352 | 508 | |
085b98f6 | 509 | repo->remote_state->current_branch = NULL; |
f2f12d16 | 510 | if (startup_info->have_repository) { |
6d1e149a | 511 | int ignore_errno; |
085b98f6 | 512 | const char *head_ref = refs_resolve_ref_unsafe( |
6d1e149a | 513 | get_main_ref_store(repo), "HEAD", 0, NULL, &flag, &ignore_errno); |
f2f12d16 JK |
514 | if (head_ref && (flag & REF_ISSYMREF) && |
515 | skip_prefix(head_ref, "refs/heads/", &head_ref)) { | |
085b98f6 GC |
516 | repo->remote_state->current_branch = make_branch( |
517 | repo->remote_state, head_ref, strlen(head_ref)); | |
f2f12d16 | 518 | } |
5751f490 | 519 | } |
085b98f6 GC |
520 | repo_config(repo, handle_config, repo->remote_state); |
521 | alias_all_urls(repo->remote_state); | |
5751f490 DB |
522 | } |
523 | ||
df93e33c DB |
524 | static int valid_remote_nick(const char *name) |
525 | { | |
8ca12c0d | 526 | if (!name[0] || is_dot_or_dotdot(name)) |
df93e33c | 527 | return 0; |
d9244ecf JS |
528 | |
529 | /* remote nicknames cannot contain slashes */ | |
530 | while (*name) | |
531 | if (is_dir_sep(*name++)) | |
532 | return 0; | |
533 | return 1; | |
df93e33c DB |
534 | } |
535 | ||
56eed342 GC |
536 | static const char *remotes_remote_for_branch(struct remote_state *remote_state, |
537 | struct branch *branch, | |
538 | int *explicit) | |
f052154d JK |
539 | { |
540 | if (branch && branch->remote_name) { | |
541 | if (explicit) | |
542 | *explicit = 1; | |
543 | return branch->remote_name; | |
544 | } | |
545 | if (explicit) | |
546 | *explicit = 0; | |
547 | return "origin"; | |
548 | } | |
549 | ||
56eed342 GC |
550 | const char *remote_for_branch(struct branch *branch, int *explicit) |
551 | { | |
552 | read_config(the_repository); | |
4a2dcb1a GC |
553 | die_on_missing_branch(the_repository, branch); |
554 | ||
56eed342 GC |
555 | return remotes_remote_for_branch(the_repository->remote_state, branch, |
556 | explicit); | |
557 | } | |
558 | ||
559 | static const char * | |
560 | remotes_pushremote_for_branch(struct remote_state *remote_state, | |
561 | struct branch *branch, int *explicit) | |
da66b274 JK |
562 | { |
563 | if (branch && branch->pushremote_name) { | |
564 | if (explicit) | |
565 | *explicit = 1; | |
566 | return branch->pushremote_name; | |
567 | } | |
56eed342 | 568 | if (remote_state->pushremote_name) { |
da66b274 JK |
569 | if (explicit) |
570 | *explicit = 1; | |
56eed342 | 571 | return remote_state->pushremote_name; |
da66b274 | 572 | } |
56eed342 | 573 | return remotes_remote_for_branch(remote_state, branch, explicit); |
da66b274 JK |
574 | } |
575 | ||
56eed342 GC |
576 | const char *pushremote_for_branch(struct branch *branch, int *explicit) |
577 | { | |
578 | read_config(the_repository); | |
4a2dcb1a GC |
579 | die_on_missing_branch(the_repository, branch); |
580 | ||
56eed342 GC |
581 | return remotes_pushremote_for_branch(the_repository->remote_state, |
582 | branch, explicit); | |
da66b274 JK |
583 | } |
584 | ||
56eed342 GC |
585 | static struct remote *remotes_remote_get(struct remote_state *remote_state, |
586 | const char *name); | |
587 | ||
af8ccd8a | 588 | const char *remote_ref_for_branch(struct branch *branch, int for_push) |
9700fae5 | 589 | { |
56eed342 | 590 | read_config(the_repository); |
4a2dcb1a GC |
591 | die_on_missing_branch(the_repository, branch); |
592 | ||
9700fae5 W |
593 | if (branch) { |
594 | if (!for_push) { | |
595 | if (branch->merge_nr) { | |
9700fae5 W |
596 | return branch->merge_name[0]; |
597 | } | |
598 | } else { | |
56eed342 GC |
599 | const char *dst, |
600 | *remote_name = remotes_pushremote_for_branch( | |
601 | the_repository->remote_state, branch, | |
602 | NULL); | |
603 | struct remote *remote = remotes_remote_get( | |
604 | the_repository->remote_state, remote_name); | |
9700fae5 | 605 | |
6bdb304b | 606 | if (remote && remote->push.nr && |
d000414e | 607 | (dst = apply_refspecs(&remote->push, |
9700fae5 | 608 | branch->refname))) { |
9700fae5 W |
609 | return dst; |
610 | } | |
611 | } | |
612 | } | |
af8ccd8a | 613 | return NULL; |
9700fae5 W |
614 | } |
615 | ||
56eed342 GC |
616 | static struct remote * |
617 | remotes_remote_get_1(struct remote_state *remote_state, const char *name, | |
618 | const char *(*get_default)(struct remote_state *, | |
619 | struct branch *, int *)) | |
5751f490 DB |
620 | { |
621 | struct remote *ret; | |
fa685bdf | 622 | int name_given = 0; |
5751f490 | 623 | |
fa685bdf DB |
624 | if (name) |
625 | name_given = 1; | |
da66b274 | 626 | else |
56eed342 | 627 | name = get_default(remote_state, remote_state->current_branch, |
fd3cb050 | 628 | &name_given); |
9326d494 | 629 | |
56eed342 | 630 | ret = make_remote(remote_state, name, 0); |
4539c218 | 631 | if (valid_remote_nick(name) && have_git_dir()) { |
0a4da29d | 632 | if (!valid_remote(ret)) |
56eed342 | 633 | read_remotes_file(remote_state, ret); |
0a4da29d | 634 | if (!valid_remote(ret)) |
56eed342 | 635 | read_branches_file(remote_state, ret); |
5751f490 | 636 | } |
0a4da29d | 637 | if (name_given && !valid_remote(ret)) |
56eed342 | 638 | add_url_alias(remote_state, ret, name); |
0a4da29d | 639 | if (!valid_remote(ret)) |
5751f490 DB |
640 | return NULL; |
641 | return ret; | |
642 | } | |
6b62816c | 643 | |
56eed342 GC |
644 | static inline struct remote * |
645 | remotes_remote_get(struct remote_state *remote_state, const char *name) | |
646 | { | |
647 | return remotes_remote_get_1(remote_state, name, | |
648 | remotes_remote_for_branch); | |
649 | } | |
650 | ||
f24f715e RR |
651 | struct remote *remote_get(const char *name) |
652 | { | |
56eed342 GC |
653 | read_config(the_repository); |
654 | return remotes_remote_get(the_repository->remote_state, name); | |
655 | } | |
656 | ||
657 | static inline struct remote * | |
658 | remotes_pushremote_get(struct remote_state *remote_state, const char *name) | |
659 | { | |
660 | return remotes_remote_get_1(remote_state, name, | |
661 | remotes_pushremote_for_branch); | |
f24f715e RR |
662 | } |
663 | ||
664 | struct remote *pushremote_get(const char *name) | |
665 | { | |
56eed342 GC |
666 | read_config(the_repository); |
667 | return remotes_pushremote_get(the_repository->remote_state, name); | |
f24f715e RR |
668 | } |
669 | ||
e459b073 | 670 | int remote_is_configured(struct remote *remote, int in_repo) |
9a23ba33 | 671 | { |
e459b073 JS |
672 | if (!remote) |
673 | return 0; | |
674 | if (in_repo) | |
675 | return remote->configured_in_repo; | |
676 | return !!remote->origin; | |
9a23ba33 FAG |
677 | } |
678 | ||
b42f6927 JS |
679 | int for_each_remote(each_remote_fn fn, void *priv) |
680 | { | |
681 | int i, result = 0; | |
085b98f6 | 682 | read_config(the_repository); |
fd3cb050 GC |
683 | for (i = 0; i < the_repository->remote_state->remotes_nr && !result; |
684 | i++) { | |
685 | struct remote *remote = | |
686 | the_repository->remote_state->remotes[i]; | |
687 | if (!remote) | |
b42f6927 | 688 | continue; |
fd3cb050 | 689 | result = fn(remote, priv); |
b42f6927 JS |
690 | } |
691 | return result; | |
692 | } | |
693 | ||
df02ebda MH |
694 | static void handle_duplicate(struct ref *ref1, struct ref *ref2) |
695 | { | |
f096e6e8 MH |
696 | if (strcmp(ref1->name, ref2->name)) { |
697 | if (ref1->fetch_head_status != FETCH_HEAD_IGNORE && | |
698 | ref2->fetch_head_status != FETCH_HEAD_IGNORE) { | |
699 | die(_("Cannot fetch both %s and %s to %s"), | |
700 | ref1->name, ref2->name, ref2->peer_ref->name); | |
701 | } else if (ref1->fetch_head_status != FETCH_HEAD_IGNORE && | |
702 | ref2->fetch_head_status == FETCH_HEAD_IGNORE) { | |
703 | warning(_("%s usually tracks %s, not %s"), | |
704 | ref2->peer_ref->name, ref2->name, ref1->name); | |
705 | } else if (ref1->fetch_head_status == FETCH_HEAD_IGNORE && | |
706 | ref2->fetch_head_status == FETCH_HEAD_IGNORE) { | |
707 | die(_("%s tracks both %s and %s"), | |
708 | ref2->peer_ref->name, ref1->name, ref2->name); | |
709 | } else { | |
710 | /* | |
711 | * This last possibility doesn't occur because | |
712 | * FETCH_HEAD_IGNORE entries always appear at | |
713 | * the end of the list. | |
714 | */ | |
92ca8680 | 715 | BUG("Internal error"); |
f096e6e8 MH |
716 | } |
717 | } | |
df02ebda MH |
718 | free(ref2->peer_ref); |
719 | free(ref2); | |
720 | } | |
721 | ||
b9afe665 | 722 | struct ref *ref_remove_duplicates(struct ref *ref_map) |
2467a4fa | 723 | { |
183113a5 | 724 | struct string_list refs = STRING_LIST_INIT_NODUP; |
b9afe665 MH |
725 | struct ref *retval = NULL; |
726 | struct ref **p = &retval; | |
73cf0822 | 727 | |
b9afe665 MH |
728 | while (ref_map) { |
729 | struct ref *ref = ref_map; | |
730 | ||
731 | ref_map = ref_map->next; | |
732 | ref->next = NULL; | |
73cf0822 | 733 | |
b9afe665 MH |
734 | if (!ref->peer_ref) { |
735 | *p = ref; | |
736 | p = &ref->next; | |
09ea1f8e | 737 | } else { |
b9afe665 MH |
738 | struct string_list_item *item = |
739 | string_list_insert(&refs, ref->peer_ref->name); | |
740 | ||
741 | if (item->util) { | |
742 | /* Entry already existed */ | |
df02ebda | 743 | handle_duplicate((struct ref *)item->util, ref); |
b9afe665 MH |
744 | } else { |
745 | *p = ref; | |
746 | p = &ref->next; | |
747 | item->util = ref; | |
748 | } | |
2467a4fa DB |
749 | } |
750 | } | |
b9afe665 | 751 | |
73cf0822 | 752 | string_list_clear(&refs, 0); |
b9afe665 | 753 | return retval; |
2467a4fa DB |
754 | } |
755 | ||
28b91f8a | 756 | int remote_has_url(struct remote *remote, const char *url) |
5d46c9d4 DB |
757 | { |
758 | int i; | |
28b91f8a SP |
759 | for (i = 0; i < remote->url_nr; i++) { |
760 | if (!strcmp(remote->url[i], url)) | |
5d46c9d4 DB |
761 | return 1; |
762 | } | |
763 | return 0; | |
764 | } | |
765 | ||
e928213f DB |
766 | static int match_name_with_pattern(const char *key, const char *name, |
767 | const char *value, char **result) | |
a3c84239 | 768 | { |
08fbdb30 DB |
769 | const char *kstar = strchr(key, '*'); |
770 | size_t klen; | |
abd2bde7 DB |
771 | size_t ksuffixlen; |
772 | size_t namelen; | |
08fbdb30 DB |
773 | int ret; |
774 | if (!kstar) | |
0b9c3afd | 775 | die(_("key '%s' of pattern had no '*'"), key); |
08fbdb30 | 776 | klen = kstar - key; |
abd2bde7 DB |
777 | ksuffixlen = strlen(kstar + 1); |
778 | namelen = strlen(name); | |
779 | ret = !strncmp(name, key, klen) && namelen >= klen + ksuffixlen && | |
780 | !memcmp(name + namelen - ksuffixlen, kstar + 1, ksuffixlen); | |
e928213f | 781 | if (ret && value) { |
07bfa575 | 782 | struct strbuf sb = STRBUF_INIT; |
08fbdb30 | 783 | const char *vstar = strchr(value, '*'); |
08fbdb30 | 784 | if (!vstar) |
0b9c3afd | 785 | die(_("value '%s' of pattern has no '*'"), value); |
07bfa575 RS |
786 | strbuf_add(&sb, value, vstar - value); |
787 | strbuf_add(&sb, name + klen, namelen - klen - ksuffixlen); | |
788 | strbuf_addstr(&sb, vstar + 1); | |
789 | *result = strbuf_detach(&sb, NULL); | |
e928213f | 790 | } |
a3c84239 DB |
791 | return ret; |
792 | } | |
793 | ||
c0192df6 JK |
794 | static int refspec_match(const struct refspec_item *refspec, |
795 | const char *name) | |
796 | { | |
797 | if (refspec->pattern) | |
798 | return match_name_with_pattern(refspec->src, name, NULL, NULL); | |
799 | ||
800 | return !strcmp(refspec->src, name); | |
801 | } | |
802 | ||
803 | static int omit_name_by_refspec(const char *name, struct refspec *rs) | |
804 | { | |
805 | int i; | |
806 | ||
807 | for (i = 0; i < rs->nr; i++) { | |
808 | if (rs->items[i].negative && refspec_match(&rs->items[i], name)) | |
809 | return 1; | |
810 | } | |
811 | return 0; | |
812 | } | |
813 | ||
814 | struct ref *apply_negative_refspecs(struct ref *ref_map, struct refspec *rs) | |
815 | { | |
816 | struct ref **tail; | |
817 | ||
818 | for (tail = &ref_map; *tail; ) { | |
819 | struct ref *ref = *tail; | |
820 | ||
821 | if (omit_name_by_refspec(ref->name, rs)) { | |
822 | *tail = ref->next; | |
823 | free(ref->peer_ref); | |
824 | free(ref); | |
825 | } else | |
826 | tail = &ref->next; | |
827 | } | |
828 | ||
829 | return ref_map; | |
830 | } | |
831 | ||
832 | static int query_matches_negative_refspec(struct refspec *rs, struct refspec_item *query) | |
833 | { | |
834 | int i, matched_negative = 0; | |
835 | int find_src = !query->src; | |
836 | struct string_list reversed = STRING_LIST_INIT_NODUP; | |
837 | const char *needle = find_src ? query->dst : query->src; | |
838 | ||
839 | /* | |
840 | * Check whether the queried ref matches any negative refpsec. If so, | |
841 | * then we should ultimately treat this as not matching the query at | |
842 | * all. | |
843 | * | |
844 | * Note that negative refspecs always match the source, but the query | |
845 | * item uses the destination. To handle this, we apply pattern | |
846 | * refspecs in reverse to figure out if the query source matches any | |
847 | * of the negative refspecs. | |
773c6941 NK |
848 | * |
849 | * The first loop finds and expands all positive refspecs | |
850 | * matched by the queried ref. | |
851 | * | |
852 | * The second loop checks if any of the results of the first loop | |
853 | * match any negative refspec. | |
c0192df6 JK |
854 | */ |
855 | for (i = 0; i < rs->nr; i++) { | |
856 | struct refspec_item *refspec = &rs->items[i]; | |
857 | char *expn_name; | |
858 | ||
859 | if (refspec->negative) | |
860 | continue; | |
861 | ||
862 | /* Note the reversal of src and dst */ | |
863 | if (refspec->pattern) { | |
864 | const char *key = refspec->dst ? refspec->dst : refspec->src; | |
865 | const char *value = refspec->src; | |
866 | ||
867 | if (match_name_with_pattern(key, needle, value, &expn_name)) | |
868 | string_list_append_nodup(&reversed, expn_name); | |
18f9c988 NK |
869 | } else if (refspec->matching) { |
870 | /* For the special matching refspec, any query should match */ | |
871 | string_list_append(&reversed, needle); | |
872 | } else if (!refspec->src) { | |
873 | BUG("refspec->src should not be null here"); | |
874 | } else if (!strcmp(needle, refspec->src)) { | |
875 | string_list_append(&reversed, refspec->src); | |
c0192df6 JK |
876 | } |
877 | } | |
878 | ||
879 | for (i = 0; !matched_negative && i < reversed.nr; i++) { | |
880 | if (omit_name_by_refspec(reversed.items[i].string, rs)) | |
881 | matched_negative = 1; | |
882 | } | |
883 | ||
884 | string_list_clear(&reversed, 0); | |
885 | ||
886 | return matched_negative; | |
887 | } | |
888 | ||
a2ac50cb BW |
889 | static void query_refspecs_multiple(struct refspec *rs, |
890 | struct refspec_item *query, | |
891 | struct string_list *results) | |
e6f63712 CMN |
892 | { |
893 | int i; | |
894 | int find_src = !query->src; | |
895 | ||
896 | if (find_src && !query->dst) | |
92ca8680 | 897 | BUG("query_refspecs_multiple: need either src or dst"); |
e6f63712 | 898 | |
c0192df6 JK |
899 | if (query_matches_negative_refspec(rs, query)) |
900 | return; | |
901 | ||
a2ac50cb BW |
902 | for (i = 0; i < rs->nr; i++) { |
903 | struct refspec_item *refspec = &rs->items[i]; | |
e6f63712 CMN |
904 | const char *key = find_src ? refspec->dst : refspec->src; |
905 | const char *value = find_src ? refspec->src : refspec->dst; | |
906 | const char *needle = find_src ? query->dst : query->src; | |
907 | char **result = find_src ? &query->src : &query->dst; | |
908 | ||
c0192df6 | 909 | if (!refspec->dst || refspec->negative) |
e6f63712 CMN |
910 | continue; |
911 | if (refspec->pattern) { | |
912 | if (match_name_with_pattern(key, needle, value, result)) | |
913 | string_list_append_nodup(results, *result); | |
914 | } else if (!strcmp(needle, key)) { | |
915 | string_list_append(results, value); | |
916 | } | |
917 | } | |
918 | } | |
919 | ||
86baf825 | 920 | int query_refspecs(struct refspec *rs, struct refspec_item *query) |
72ff8943 DB |
921 | { |
922 | int i; | |
c500352e | 923 | int find_src = !query->src; |
049bff8f MH |
924 | const char *needle = find_src ? query->dst : query->src; |
925 | char **result = find_src ? &query->src : &query->dst; | |
72ff8943 | 926 | |
c500352e | 927 | if (find_src && !query->dst) |
92ca8680 | 928 | BUG("query_refspecs: need either src or dst"); |
b42f6927 | 929 | |
c0192df6 JK |
930 | if (query_matches_negative_refspec(rs, query)) |
931 | return -1; | |
932 | ||
86baf825 BW |
933 | for (i = 0; i < rs->nr; i++) { |
934 | struct refspec_item *refspec = &rs->items[i]; | |
c500352e CMN |
935 | const char *key = find_src ? refspec->dst : refspec->src; |
936 | const char *value = find_src ? refspec->src : refspec->dst; | |
b42f6927 | 937 | |
c0192df6 | 938 | if (!refspec->dst || refspec->negative) |
5d46c9d4 | 939 | continue; |
c500352e | 940 | if (refspec->pattern) { |
e928213f | 941 | if (match_name_with_pattern(key, needle, value, result)) { |
c500352e | 942 | query->force = refspec->force; |
5d46c9d4 DB |
943 | return 0; |
944 | } | |
b42f6927 JS |
945 | } else if (!strcmp(needle, key)) { |
946 | *result = xstrdup(value); | |
c500352e | 947 | query->force = refspec->force; |
b42f6927 | 948 | return 0; |
5d46c9d4 DB |
949 | } |
950 | } | |
5d46c9d4 DB |
951 | return -1; |
952 | } | |
953 | ||
d000414e | 954 | char *apply_refspecs(struct refspec *rs, const char *name) |
c500352e | 955 | { |
0ad4a5ff | 956 | struct refspec_item query; |
c500352e | 957 | |
0ad4a5ff | 958 | memset(&query, 0, sizeof(struct refspec_item)); |
c500352e CMN |
959 | query.src = (char *)name; |
960 | ||
86baf825 | 961 | if (query_refspecs(rs, &query)) |
c500352e CMN |
962 | return NULL; |
963 | ||
964 | return query.dst; | |
965 | } | |
966 | ||
0ad4a5ff | 967 | int remote_find_tracking(struct remote *remote, struct refspec_item *refspec) |
c500352e | 968 | { |
86baf825 | 969 | return query_refspecs(&remote->fetch, refspec); |
c500352e CMN |
970 | } |
971 | ||
8009768e RS |
972 | static struct ref *alloc_ref_with_prefix(const char *prefix, size_t prefixlen, |
973 | const char *name) | |
974 | { | |
975 | size_t len = strlen(name); | |
50a6c8ef | 976 | struct ref *ref = xcalloc(1, st_add4(sizeof(*ref), prefixlen, len, 1)); |
8009768e RS |
977 | memcpy(ref->name, prefix, prefixlen); |
978 | memcpy(ref->name + prefixlen, name, len); | |
979 | return ref; | |
980 | } | |
981 | ||
59c69c0c | 982 | struct ref *alloc_ref(const char *name) |
dfd255dd | 983 | { |
59c69c0c | 984 | return alloc_ref_with_prefix("", 0, name); |
737922aa KK |
985 | } |
986 | ||
59a57757 | 987 | struct ref *copy_ref(const struct ref *ref) |
d71ab174 | 988 | { |
7b3db095 JS |
989 | struct ref *cpy; |
990 | size_t len; | |
991 | if (!ref) | |
992 | return NULL; | |
50a6c8ef JK |
993 | len = st_add3(sizeof(struct ref), strlen(ref->name), 1); |
994 | cpy = xmalloc(len); | |
995 | memcpy(cpy, ref, len); | |
7b3db095 | 996 | cpy->next = NULL; |
8c53f071 JK |
997 | cpy->symref = xstrdup_or_null(ref->symref); |
998 | cpy->remote_status = xstrdup_or_null(ref->remote_status); | |
7b3db095 JS |
999 | cpy->peer_ref = copy_ref(ref->peer_ref); |
1000 | return cpy; | |
d71ab174 DB |
1001 | } |
1002 | ||
4577370e DB |
1003 | struct ref *copy_ref_list(const struct ref *ref) |
1004 | { | |
1005 | struct ref *ret = NULL; | |
1006 | struct ref **tail = &ret; | |
1007 | while (ref) { | |
1008 | *tail = copy_ref(ref); | |
1009 | ref = ref->next; | |
1010 | tail = &((*tail)->next); | |
1011 | } | |
1012 | return ret; | |
1013 | } | |
1014 | ||
1027186f | 1015 | void free_one_ref(struct ref *ref) |
be885d96 DB |
1016 | { |
1017 | if (!ref) | |
1018 | return; | |
1027186f | 1019 | free_one_ref(ref->peer_ref); |
be885d96 DB |
1020 | free(ref->remote_status); |
1021 | free(ref->symref); | |
1022 | free(ref); | |
1023 | } | |
1024 | ||
dfd255dd DB |
1025 | void free_refs(struct ref *ref) |
1026 | { | |
1027 | struct ref *next; | |
1028 | while (ref) { | |
1029 | next = ref->next; | |
1027186f | 1030 | free_one_ref(ref); |
dfd255dd DB |
1031 | ref = next; |
1032 | } | |
1033 | } | |
1034 | ||
ed81c76b JK |
1035 | int ref_compare_name(const void *va, const void *vb) |
1036 | { | |
1037 | const struct ref *a = va, *b = vb; | |
1038 | return strcmp(a->name, b->name); | |
1039 | } | |
1040 | ||
1041 | static void *ref_list_get_next(const void *a) | |
1042 | { | |
1043 | return ((const struct ref *)a)->next; | |
1044 | } | |
1045 | ||
1046 | static void ref_list_set_next(void *a, void *next) | |
1047 | { | |
1048 | ((struct ref *)a)->next = next; | |
1049 | } | |
1050 | ||
1051 | void sort_ref_list(struct ref **l, int (*cmp)(const void *, const void *)) | |
1052 | { | |
1053 | *l = llist_mergesort(*l, ref_list_get_next, ref_list_set_next, cmp); | |
1054 | } | |
1055 | ||
ca02465b JH |
1056 | int count_refspec_match(const char *pattern, |
1057 | struct ref *refs, | |
1058 | struct ref **matched_ref) | |
6b62816c DB |
1059 | { |
1060 | int patlen = strlen(pattern); | |
1061 | struct ref *matched_weak = NULL; | |
1062 | struct ref *matched = NULL; | |
1063 | int weak_match = 0; | |
1064 | int match = 0; | |
1065 | ||
1066 | for (weak_match = match = 0; refs; refs = refs->next) { | |
1067 | char *name = refs->name; | |
1068 | int namelen = strlen(name); | |
6b62816c | 1069 | |
54457fe5 | 1070 | if (!refname_match(pattern, name)) |
6b62816c DB |
1071 | continue; |
1072 | ||
1073 | /* A match is "weak" if it is with refs outside | |
1074 | * heads or tags, and did not specify the pattern | |
1075 | * in full (e.g. "refs/remotes/origin/master") or at | |
1076 | * least from the toplevel (e.g. "remotes/origin/master"); | |
1077 | * otherwise "git push $URL master" would result in | |
1078 | * ambiguity between remotes/origin/master and heads/master | |
1079 | * at the remote site. | |
1080 | */ | |
1081 | if (namelen != patlen && | |
1082 | patlen != namelen - 5 && | |
59556548 CC |
1083 | !starts_with(name, "refs/heads/") && |
1084 | !starts_with(name, "refs/tags/")) { | |
6b62816c DB |
1085 | /* We want to catch the case where only weak |
1086 | * matches are found and there are multiple | |
1087 | * matches, and where more than one strong | |
1088 | * matches are found, as ambiguous. One | |
1089 | * strong match with zero or more weak matches | |
1090 | * are acceptable as a unique match. | |
1091 | */ | |
1092 | matched_weak = refs; | |
1093 | weak_match++; | |
1094 | } | |
1095 | else { | |
1096 | matched = refs; | |
1097 | match++; | |
1098 | } | |
1099 | } | |
1100 | if (!matched) { | |
471fd3fe JK |
1101 | if (matched_ref) |
1102 | *matched_ref = matched_weak; | |
6b62816c DB |
1103 | return weak_match; |
1104 | } | |
1105 | else { | |
471fd3fe JK |
1106 | if (matched_ref) |
1107 | *matched_ref = matched; | |
6b62816c DB |
1108 | return match; |
1109 | } | |
1110 | } | |
1111 | ||
1d735267 | 1112 | static void tail_link_ref(struct ref *ref, struct ref ***tail) |
6b62816c DB |
1113 | { |
1114 | **tail = ref; | |
1d735267 DB |
1115 | while (ref->next) |
1116 | ref = ref->next; | |
6b62816c | 1117 | *tail = &ref->next; |
6b62816c DB |
1118 | } |
1119 | ||
67655246 FC |
1120 | static struct ref *alloc_delete_ref(void) |
1121 | { | |
1122 | struct ref *ref = alloc_ref("(delete)"); | |
f4e54d02 | 1123 | oidclr(&ref->new_oid); |
67655246 FC |
1124 | return ref; |
1125 | } | |
1126 | ||
471fd3fe JK |
1127 | static int try_explicit_object_name(const char *name, |
1128 | struct ref **match) | |
6b62816c | 1129 | { |
fcd30b13 | 1130 | struct object_id oid; |
6b62816c | 1131 | |
471fd3fe JK |
1132 | if (!*name) { |
1133 | if (match) | |
1134 | *match = alloc_delete_ref(); | |
1135 | return 0; | |
1136 | } | |
1137 | ||
e82caf38 | 1138 | if (get_oid(name, &oid)) |
471fd3fe JK |
1139 | return -1; |
1140 | ||
1141 | if (match) { | |
1142 | *match = alloc_ref(name); | |
fcd30b13 | 1143 | oidcpy(&(*match)->new_oid, &oid); |
471fd3fe JK |
1144 | } |
1145 | return 0; | |
6b62816c DB |
1146 | } |
1147 | ||
1d735267 | 1148 | static struct ref *make_linked_ref(const char *name, struct ref ***tail) |
6b62816c | 1149 | { |
59c69c0c | 1150 | struct ref *ret = alloc_ref(name); |
1d735267 DB |
1151 | tail_link_ref(ret, tail); |
1152 | return ret; | |
163f0ee5 | 1153 | } |
8558fd9e | 1154 | |
f8aae120 JK |
1155 | static char *guess_ref(const char *name, struct ref *peer) |
1156 | { | |
1157 | struct strbuf buf = STRBUF_INIT; | |
f8aae120 | 1158 | |
7695d118 | 1159 | const char *r = resolve_ref_unsafe(peer->name, RESOLVE_REF_READING, |
744c040b | 1160 | NULL, NULL); |
f8aae120 JK |
1161 | if (!r) |
1162 | return NULL; | |
1163 | ||
cab53989 | 1164 | if (starts_with(r, "refs/heads/")) { |
f8aae120 | 1165 | strbuf_addstr(&buf, "refs/heads/"); |
cab53989 | 1166 | } else if (starts_with(r, "refs/tags/")) { |
f8aae120 | 1167 | strbuf_addstr(&buf, "refs/tags/"); |
cab53989 | 1168 | } else { |
f8aae120 | 1169 | return NULL; |
cab53989 | 1170 | } |
f8aae120 JK |
1171 | |
1172 | strbuf_addstr(&buf, name); | |
1173 | return strbuf_detach(&buf, NULL); | |
1174 | } | |
1175 | ||
f7ade3d3 | 1176 | static int match_explicit_lhs(struct ref *src, |
0ad4a5ff | 1177 | struct refspec_item *rs, |
f7ade3d3 JK |
1178 | struct ref **match, |
1179 | int *allocated_match) | |
1180 | { | |
1181 | switch (count_refspec_match(rs->src, src, match)) { | |
1182 | case 1: | |
471fd3fe JK |
1183 | if (allocated_match) |
1184 | *allocated_match = 0; | |
f7ade3d3 JK |
1185 | return 0; |
1186 | case 0: | |
1187 | /* The source could be in the get_sha1() format | |
1188 | * not a reference name. :refs/other is a | |
1189 | * way to delete 'other' ref at the remote end. | |
1190 | */ | |
471fd3fe | 1191 | if (try_explicit_object_name(rs->src, match) < 0) |
0b9c3afd | 1192 | return error(_("src refspec %s does not match any"), rs->src); |
471fd3fe JK |
1193 | if (allocated_match) |
1194 | *allocated_match = 1; | |
f7ade3d3 JK |
1195 | return 0; |
1196 | default: | |
0b9c3afd | 1197 | return error(_("src refspec %s matches more than one"), rs->src); |
f7ade3d3 JK |
1198 | } |
1199 | } | |
1200 | ||
04d17287 ÆAB |
1201 | static void show_push_unqualified_ref_name_error(const char *dst_value, |
1202 | const char *matched_src_name) | |
1203 | { | |
dd8dd300 ÆAB |
1204 | struct object_id oid; |
1205 | enum object_type type; | |
1206 | ||
04d17287 ÆAB |
1207 | /* |
1208 | * TRANSLATORS: "matches '%s'%" is the <dst> part of "git push | |
1209 | * <remote> <src>:<dst>" push, and "being pushed ('%s')" is | |
1210 | * the <src>. | |
1211 | */ | |
1212 | error(_("The destination you provided is not a full refname (i.e.,\n" | |
1213 | "starting with \"refs/\"). We tried to guess what you meant by:\n" | |
1214 | "\n" | |
1215 | "- Looking for a ref that matches '%s' on the remote side.\n" | |
1216 | "- Checking if the <src> being pushed ('%s')\n" | |
1217 | " is a ref in \"refs/{heads,tags}/\". If so we add a corresponding\n" | |
1218 | " refs/{heads,tags}/ prefix on the remote side.\n" | |
1219 | "\n" | |
1220 | "Neither worked, so we gave up. You must fully qualify the ref."), | |
1221 | dst_value, matched_src_name); | |
dd8dd300 | 1222 | |
ed9bff08 | 1223 | if (!advice_enabled(ADVICE_PUSH_UNQUALIFIED_REF_NAME)) |
dd8dd300 ÆAB |
1224 | return; |
1225 | ||
1226 | if (get_oid(matched_src_name, &oid)) | |
1227 | BUG("'%s' is not a valid object, " | |
1228 | "match_explicit_lhs() should catch this!", | |
1229 | matched_src_name); | |
1230 | type = oid_object_info(the_repository, &oid, NULL); | |
1231 | if (type == OBJ_COMMIT) { | |
1232 | advise(_("The <src> part of the refspec is a commit object.\n" | |
1233 | "Did you mean to create a new branch by pushing to\n" | |
1234 | "'%s:refs/heads/%s'?"), | |
1235 | matched_src_name, dst_value); | |
1236 | } else if (type == OBJ_TAG) { | |
1237 | advise(_("The <src> part of the refspec is a tag object.\n" | |
1238 | "Did you mean to create a new tag by pushing to\n" | |
1239 | "'%s:refs/tags/%s'?"), | |
1240 | matched_src_name, dst_value); | |
1241 | } else if (type == OBJ_TREE) { | |
1242 | advise(_("The <src> part of the refspec is a tree object.\n" | |
1243 | "Did you mean to tag a new tree by pushing to\n" | |
1244 | "'%s:refs/tags/%s'?"), | |
1245 | matched_src_name, dst_value); | |
1246 | } else if (type == OBJ_BLOB) { | |
1247 | advise(_("The <src> part of the refspec is a blob object.\n" | |
1248 | "Did you mean to tag a new blob by pushing to\n" | |
1249 | "'%s:refs/tags/%s'?"), | |
1250 | matched_src_name, dst_value); | |
1251 | } else { | |
1252 | BUG("'%s' should be commit/tag/tree/blob, is '%d'", | |
1253 | matched_src_name, type); | |
1254 | } | |
04d17287 ÆAB |
1255 | } |
1256 | ||
54a8ad92 JH |
1257 | static int match_explicit(struct ref *src, struct ref *dst, |
1258 | struct ref ***dst_tail, | |
0ad4a5ff | 1259 | struct refspec_item *rs) |
6b62816c | 1260 | { |
54a8ad92 | 1261 | struct ref *matched_src, *matched_dst; |
f7ade3d3 | 1262 | int allocated_src; |
8558fd9e | 1263 | |
54a8ad92 | 1264 | const char *dst_value = rs->dst; |
f8aae120 | 1265 | char *dst_guess; |
6b62816c | 1266 | |
c0192df6 | 1267 | if (rs->pattern || rs->matching || rs->negative) |
9a7bbd1d | 1268 | return 0; |
8558fd9e | 1269 | |
54a8ad92 | 1270 | matched_src = matched_dst = NULL; |
f7ade3d3 JK |
1271 | if (match_explicit_lhs(src, rs, &matched_src, &allocated_src) < 0) |
1272 | return -1; | |
3c8b7df1 | 1273 | |
4491e62a | 1274 | if (!dst_value) { |
9f0ea7e8 DB |
1275 | int flag; |
1276 | ||
7695d118 RS |
1277 | dst_value = resolve_ref_unsafe(matched_src->name, |
1278 | RESOLVE_REF_READING, | |
744c040b | 1279 | NULL, &flag); |
9f0ea7e8 DB |
1280 | if (!dst_value || |
1281 | ((flag & REF_ISSYMREF) && | |
59556548 | 1282 | !starts_with(dst_value, "refs/heads/"))) |
0b9c3afd | 1283 | die(_("%s cannot be resolved to branch"), |
9f0ea7e8 | 1284 | matched_src->name); |
4491e62a | 1285 | } |
3c8b7df1 | 1286 | |
54a8ad92 JH |
1287 | switch (count_refspec_match(dst_value, dst, &matched_dst)) { |
1288 | case 1: | |
1289 | break; | |
1290 | case 0: | |
cab53989 | 1291 | if (starts_with(dst_value, "refs/")) { |
1d735267 | 1292 | matched_dst = make_linked_ref(dst_value, dst_tail); |
cab53989 | 1293 | } else if (is_null_oid(&matched_src->new_oid)) { |
0b9c3afd | 1294 | error(_("unable to delete '%s': remote ref does not exist"), |
5742c82b | 1295 | dst_value); |
cab53989 | 1296 | } else if ((dst_guess = guess_ref(dst_value, matched_src))) { |
f8aae120 | 1297 | matched_dst = make_linked_ref(dst_guess, dst_tail); |
3dc7ea91 | 1298 | free(dst_guess); |
cab53989 | 1299 | } else { |
04d17287 ÆAB |
1300 | show_push_unqualified_ref_name_error(dst_value, |
1301 | matched_src->name); | |
cab53989 | 1302 | } |
54a8ad92 JH |
1303 | break; |
1304 | default: | |
3c8b7df1 | 1305 | matched_dst = NULL; |
0b9c3afd | 1306 | error(_("dst refspec %s matches more than one"), |
54a8ad92 JH |
1307 | dst_value); |
1308 | break; | |
1309 | } | |
9a7bbd1d JK |
1310 | if (!matched_dst) |
1311 | return -1; | |
1312 | if (matched_dst->peer_ref) | |
0b9c3afd NTND |
1313 | return error(_("dst ref %s receives from more than one src"), |
1314 | matched_dst->name); | |
54a8ad92 | 1315 | else { |
f7ade3d3 JK |
1316 | matched_dst->peer_ref = allocated_src ? |
1317 | matched_src : | |
1318 | copy_ref(matched_src); | |
54a8ad92 | 1319 | matched_dst->force = rs->force; |
6b62816c | 1320 | } |
9a7bbd1d | 1321 | return 0; |
54a8ad92 JH |
1322 | } |
1323 | ||
1324 | static int match_explicit_refs(struct ref *src, struct ref *dst, | |
9fa2e5e8 | 1325 | struct ref ***dst_tail, struct refspec *rs) |
54a8ad92 JH |
1326 | { |
1327 | int i, errs; | |
9fa2e5e8 BW |
1328 | for (i = errs = 0; i < rs->nr; i++) |
1329 | errs += match_explicit(src, dst, dst_tail, &rs->items[i]); | |
9a7bbd1d | 1330 | return errs; |
6b62816c DB |
1331 | } |
1332 | ||
f3acb830 BW |
1333 | static char *get_ref_match(const struct refspec *rs, const struct ref *ref, |
1334 | int send_mirror, int direction, | |
1335 | const struct refspec_item **ret_pat) | |
8558fd9e | 1336 | { |
0ad4a5ff | 1337 | const struct refspec_item *pat; |
db70a04c | 1338 | char *name; |
8558fd9e | 1339 | int i; |
a83619d6 | 1340 | int matching_refs = -1; |
f3acb830 BW |
1341 | for (i = 0; i < rs->nr; i++) { |
1342 | const struct refspec_item *item = &rs->items[i]; | |
c0192df6 JK |
1343 | |
1344 | if (item->negative) | |
1345 | continue; | |
1346 | ||
f3acb830 BW |
1347 | if (item->matching && |
1348 | (matching_refs == -1 || item->force)) { | |
a83619d6 PB |
1349 | matching_refs = i; |
1350 | continue; | |
1351 | } | |
1352 | ||
f3acb830 BW |
1353 | if (item->pattern) { |
1354 | const char *dst_side = item->dst ? item->dst : item->src; | |
6ddba5e2 FC |
1355 | int match; |
1356 | if (direction == FROM_SRC) | |
f3acb830 | 1357 | match = match_name_with_pattern(item->src, ref->name, dst_side, &name); |
6ddba5e2 | 1358 | else |
f3acb830 | 1359 | match = match_name_with_pattern(dst_side, ref->name, item->src, &name); |
6ddba5e2 | 1360 | if (match) { |
db70a04c FC |
1361 | matching_refs = i; |
1362 | break; | |
1363 | } | |
1364 | } | |
8558fd9e | 1365 | } |
db70a04c | 1366 | if (matching_refs == -1) |
a83619d6 | 1367 | return NULL; |
db70a04c | 1368 | |
f3acb830 | 1369 | pat = &rs->items[matching_refs]; |
db70a04c FC |
1370 | if (pat->matching) { |
1371 | /* | |
1372 | * "matching refs"; traditionally we pushed everything | |
1373 | * including refs outside refs/heads/ hierarchy, but | |
1374 | * that does not make much sense these days. | |
1375 | */ | |
59556548 | 1376 | if (!send_mirror && !starts_with(ref->name, "refs/heads/")) |
db70a04c FC |
1377 | return NULL; |
1378 | name = xstrdup(ref->name); | |
1379 | } | |
1380 | if (ret_pat) | |
1381 | *ret_pat = pat; | |
1382 | return name; | |
8558fd9e DB |
1383 | } |
1384 | ||
6d2bf96e CB |
1385 | static struct ref **tail_ref(struct ref **head) |
1386 | { | |
1387 | struct ref **tail = head; | |
1388 | while (*tail) | |
1389 | tail = &((*tail)->next); | |
1390 | return tail; | |
1391 | } | |
1392 | ||
c2aba155 JH |
1393 | struct tips { |
1394 | struct commit **tip; | |
1395 | int nr, alloc; | |
1396 | }; | |
1397 | ||
fcd30b13 | 1398 | static void add_to_tips(struct tips *tips, const struct object_id *oid) |
c2aba155 JH |
1399 | { |
1400 | struct commit *commit; | |
1401 | ||
fcd30b13 | 1402 | if (is_null_oid(oid)) |
c2aba155 | 1403 | return; |
21e1ee8f | 1404 | commit = lookup_commit_reference_gently(the_repository, oid, 1); |
c2aba155 JH |
1405 | if (!commit || (commit->object.flags & TMP_MARK)) |
1406 | return; | |
1407 | commit->object.flags |= TMP_MARK; | |
1408 | ALLOC_GROW(tips->tip, tips->nr + 1, tips->alloc); | |
1409 | tips->tip[tips->nr++] = commit; | |
1410 | } | |
1411 | ||
1412 | static void add_missing_tags(struct ref *src, struct ref **dst, struct ref ***dst_tail) | |
1413 | { | |
1414 | struct string_list dst_tag = STRING_LIST_INIT_NODUP; | |
1415 | struct string_list src_tag = STRING_LIST_INIT_NODUP; | |
1416 | struct string_list_item *item; | |
1417 | struct ref *ref; | |
1418 | struct tips sent_tips; | |
1419 | ||
1420 | /* | |
1421 | * Collect everything we know they would have at the end of | |
1422 | * this push, and collect all tags they have. | |
1423 | */ | |
1424 | memset(&sent_tips, 0, sizeof(sent_tips)); | |
1425 | for (ref = *dst; ref; ref = ref->next) { | |
1426 | if (ref->peer_ref && | |
f4e54d02 | 1427 | !is_null_oid(&ref->peer_ref->new_oid)) |
fcd30b13 | 1428 | add_to_tips(&sent_tips, &ref->peer_ref->new_oid); |
c2aba155 | 1429 | else |
fcd30b13 | 1430 | add_to_tips(&sent_tips, &ref->old_oid); |
59556548 | 1431 | if (starts_with(ref->name, "refs/tags/")) |
c2aba155 JH |
1432 | string_list_append(&dst_tag, ref->name); |
1433 | } | |
1434 | clear_commit_marks_many(sent_tips.nr, sent_tips.tip, TMP_MARK); | |
1435 | ||
3383e199 | 1436 | string_list_sort(&dst_tag); |
c2aba155 JH |
1437 | |
1438 | /* Collect tags they do not have. */ | |
1439 | for (ref = src; ref; ref = ref->next) { | |
59556548 | 1440 | if (!starts_with(ref->name, "refs/tags/")) |
c2aba155 JH |
1441 | continue; /* not a tag */ |
1442 | if (string_list_has_string(&dst_tag, ref->name)) | |
1443 | continue; /* they already have it */ | |
0df8e965 | 1444 | if (oid_object_info(the_repository, &ref->new_oid, NULL) != OBJ_TAG) |
c2aba155 JH |
1445 | continue; /* be conservative */ |
1446 | item = string_list_append(&src_tag, ref->name); | |
1447 | item->util = ref; | |
1448 | } | |
1449 | string_list_clear(&dst_tag, 0); | |
1450 | ||
1451 | /* | |
1452 | * At this point, src_tag lists tags that are missing from | |
1453 | * dst, and sent_tips lists the tips we are pushing or those | |
1454 | * that we know they already have. An element in the src_tag | |
1455 | * that is an ancestor of any of the sent_tips needs to be | |
1456 | * sent to the other side. | |
1457 | */ | |
1458 | if (sent_tips.nr) { | |
85daa01f DS |
1459 | const int reachable_flag = 1; |
1460 | struct commit_list *found_commits; | |
1461 | struct commit **src_commits; | |
1462 | int nr_src_commits = 0, alloc_src_commits = 16; | |
1463 | ALLOC_ARRAY(src_commits, alloc_src_commits); | |
1464 | ||
c2aba155 JH |
1465 | for_each_string_list_item(item, &src_tag) { |
1466 | struct ref *ref = item->util; | |
85daa01f DS |
1467 | struct commit *commit; |
1468 | ||
1469 | if (is_null_oid(&ref->new_oid)) | |
1470 | continue; | |
1471 | commit = lookup_commit_reference_gently(the_repository, | |
1472 | &ref->new_oid, | |
1473 | 1); | |
1474 | if (!commit) | |
1475 | /* not pushing a commit, which is not an error */ | |
1476 | continue; | |
1477 | ||
1478 | ALLOC_GROW(src_commits, nr_src_commits + 1, alloc_src_commits); | |
1479 | src_commits[nr_src_commits++] = commit; | |
1480 | } | |
1481 | ||
1482 | found_commits = get_reachable_subset(sent_tips.tip, sent_tips.nr, | |
1483 | src_commits, nr_src_commits, | |
1484 | reachable_flag); | |
1485 | ||
1486 | for_each_string_list_item(item, &src_tag) { | |
c2aba155 | 1487 | struct ref *dst_ref; |
85daa01f | 1488 | struct ref *ref = item->util; |
c2aba155 JH |
1489 | struct commit *commit; |
1490 | ||
f4e54d02 | 1491 | if (is_null_oid(&ref->new_oid)) |
c2aba155 | 1492 | continue; |
21e1ee8f SB |
1493 | commit = lookup_commit_reference_gently(the_repository, |
1494 | &ref->new_oid, | |
bc83266a | 1495 | 1); |
c2aba155 JH |
1496 | if (!commit) |
1497 | /* not pushing a commit, which is not an error */ | |
1498 | continue; | |
1499 | ||
1500 | /* | |
1501 | * Is this tag, which they do not have, reachable from | |
1502 | * any of the commits we are sending? | |
1503 | */ | |
85daa01f | 1504 | if (!(commit->object.flags & reachable_flag)) |
c2aba155 JH |
1505 | continue; |
1506 | ||
1507 | /* Add it in */ | |
1508 | dst_ref = make_linked_ref(ref->name, dst_tail); | |
f4e54d02 | 1509 | oidcpy(&dst_ref->new_oid, &ref->new_oid); |
c2aba155 JH |
1510 | dst_ref->peer_ref = copy_ref(ref); |
1511 | } | |
85daa01f DS |
1512 | |
1513 | clear_commit_marks_many(nr_src_commits, src_commits, reachable_flag); | |
1514 | free(src_commits); | |
1515 | free_commit_list(found_commits); | |
c2aba155 | 1516 | } |
85daa01f | 1517 | |
c2aba155 JH |
1518 | string_list_clear(&src_tag, 0); |
1519 | free(sent_tips.tip); | |
1520 | } | |
1521 | ||
47a59185 JH |
1522 | struct ref *find_ref_by_name(const struct ref *list, const char *name) |
1523 | { | |
1524 | for ( ; list; list = list->next) | |
1525 | if (!strcmp(list->name, name)) | |
1526 | return (struct ref *)list; | |
1527 | return NULL; | |
1528 | } | |
1529 | ||
f1bd15ab BC |
1530 | static void prepare_ref_index(struct string_list *ref_index, struct ref *ref) |
1531 | { | |
1532 | for ( ; ref; ref = ref->next) | |
1533 | string_list_append_nodup(ref_index, ref->name)->util = ref; | |
1534 | ||
3383e199 | 1535 | string_list_sort(ref_index); |
f1bd15ab BC |
1536 | } |
1537 | ||
ba928c13 JK |
1538 | /* |
1539 | * Given only the set of local refs, sanity-check the set of push | |
1540 | * refspecs. We can't catch all errors that match_push_refs would, | |
1541 | * but we can catch some errors early before even talking to the | |
1542 | * remote side. | |
1543 | */ | |
afb1aed4 | 1544 | int check_push_refs(struct ref *src, struct refspec *rs) |
ba928c13 | 1545 | { |
ba928c13 JK |
1546 | int ret = 0; |
1547 | int i; | |
1548 | ||
afb1aed4 BW |
1549 | for (i = 0; i < rs->nr; i++) { |
1550 | struct refspec_item *item = &rs->items[i]; | |
ba928c13 | 1551 | |
c0192df6 | 1552 | if (item->pattern || item->matching || item->negative) |
ba928c13 JK |
1553 | continue; |
1554 | ||
afb1aed4 | 1555 | ret |= match_explicit_lhs(src, item, NULL, NULL); |
ba928c13 JK |
1556 | } |
1557 | ||
ba928c13 JK |
1558 | return ret; |
1559 | } | |
1560 | ||
54a8ad92 | 1561 | /* |
29753cdd JH |
1562 | * Given the set of refs the local repository has, the set of refs the |
1563 | * remote repository has, and the refspec used for push, determine | |
1564 | * what remote refs we will update and with what value by setting | |
1565 | * peer_ref (which object is being pushed) and force (if the push is | |
1566 | * forced) in elements of "dst". The function may add new elements to | |
1567 | * dst (e.g. pushing to a new branch, done in match_explicit_refs). | |
54a8ad92 | 1568 | */ |
29753cdd | 1569 | int match_push_refs(struct ref *src, struct ref **dst, |
5c7ec846 | 1570 | struct refspec *rs, int flags) |
6b62816c | 1571 | { |
28b9d6e5 AW |
1572 | int send_all = flags & MATCH_REFS_ALL; |
1573 | int send_mirror = flags & MATCH_REFS_MIRROR; | |
6ddba5e2 | 1574 | int send_prune = flags & MATCH_REFS_PRUNE; |
5f48cb95 | 1575 | int errs; |
b1d8b1f3 | 1576 | struct ref *ref, **dst_tail = tail_ref(dst); |
f1bd15ab | 1577 | struct string_list dst_ref_index = STRING_LIST_INIT_NODUP; |
6b62816c | 1578 | |
5c7ec846 BW |
1579 | /* If no refspec is provided, use the default ":" */ |
1580 | if (!rs->nr) | |
1581 | refspec_append(rs, ":"); | |
1582 | ||
1583 | errs = match_explicit_refs(src, *dst, &dst_tail, rs); | |
6b62816c DB |
1584 | |
1585 | /* pick the remainder */ | |
b1d8b1f3 | 1586 | for (ref = src; ref; ref = ref->next) { |
f1bd15ab | 1587 | struct string_list_item *dst_item; |
6b62816c | 1588 | struct ref *dst_peer; |
0ad4a5ff | 1589 | const struct refspec_item *pat = NULL; |
6e66bf3c | 1590 | char *dst_name; |
db70a04c | 1591 | |
5c7ec846 | 1592 | dst_name = get_ref_match(rs, ref, send_mirror, FROM_SRC, &pat); |
db70a04c | 1593 | if (!dst_name) |
a83619d6 PB |
1594 | continue; |
1595 | ||
f1bd15ab BC |
1596 | if (!dst_ref_index.nr) |
1597 | prepare_ref_index(&dst_ref_index, *dst); | |
1598 | ||
1599 | dst_item = string_list_lookup(&dst_ref_index, dst_name); | |
1600 | dst_peer = dst_item ? dst_item->util : NULL; | |
a83619d6 PB |
1601 | if (dst_peer) { |
1602 | if (dst_peer->peer_ref) | |
1603 | /* We're already sending something to this ref. */ | |
1604 | goto free_name; | |
a83619d6 PB |
1605 | } else { |
1606 | if (pat->matching && !(send_all || send_mirror)) | |
1607 | /* | |
1608 | * Remote doesn't have it, and we have no | |
1609 | * explicit pattern, and we don't have | |
01689909 | 1610 | * --all or --mirror. |
a83619d6 PB |
1611 | */ |
1612 | goto free_name; | |
28b9d6e5 | 1613 | |
6b62816c | 1614 | /* Create a new one and link it */ |
6d2bf96e | 1615 | dst_peer = make_linked_ref(dst_name, &dst_tail); |
f4e54d02 | 1616 | oidcpy(&dst_peer->new_oid, &ref->new_oid); |
f1bd15ab BC |
1617 | string_list_insert(&dst_ref_index, |
1618 | dst_peer->name)->util = dst_peer; | |
6b62816c | 1619 | } |
b1d8b1f3 | 1620 | dst_peer->peer_ref = copy_ref(ref); |
a83619d6 | 1621 | dst_peer->force = pat->force; |
6e66bf3c AR |
1622 | free_name: |
1623 | free(dst_name); | |
6b62816c | 1624 | } |
c2aba155 | 1625 | |
f1bd15ab BC |
1626 | string_list_clear(&dst_ref_index, 0); |
1627 | ||
c2aba155 JH |
1628 | if (flags & MATCH_REFS_FOLLOW_TAGS) |
1629 | add_missing_tags(src, dst, &dst_tail); | |
1630 | ||
6ddba5e2 | 1631 | if (send_prune) { |
f1bd15ab | 1632 | struct string_list src_ref_index = STRING_LIST_INIT_NODUP; |
6ddba5e2 FC |
1633 | /* check for missing refs on the remote */ |
1634 | for (ref = *dst; ref; ref = ref->next) { | |
1635 | char *src_name; | |
1636 | ||
1637 | if (ref->peer_ref) | |
1638 | /* We're already sending something to this ref. */ | |
1639 | continue; | |
1640 | ||
5c7ec846 | 1641 | src_name = get_ref_match(rs, ref, send_mirror, FROM_DST, NULL); |
6ddba5e2 | 1642 | if (src_name) { |
f1bd15ab BC |
1643 | if (!src_ref_index.nr) |
1644 | prepare_ref_index(&src_ref_index, src); | |
1645 | if (!string_list_has_string(&src_ref_index, | |
1646 | src_name)) | |
6ddba5e2 FC |
1647 | ref->peer_ref = alloc_delete_ref(); |
1648 | free(src_name); | |
1649 | } | |
1650 | } | |
f1bd15ab | 1651 | string_list_clear(&src_ref_index, 0); |
6ddba5e2 | 1652 | } |
8ca69370 | 1653 | |
c0192df6 JK |
1654 | *dst = apply_negative_refspecs(*dst, rs); |
1655 | ||
5f48cb95 JS |
1656 | if (errs) |
1657 | return -1; | |
6b62816c DB |
1658 | return 0; |
1659 | } | |
cf818348 | 1660 | |
20e8b465 | 1661 | void set_ref_status_for_push(struct ref *remote_refs, int send_mirror, |
631b5ef2 | 1662 | int force_update) |
20e8b465 TRC |
1663 | { |
1664 | struct ref *ref; | |
1665 | ||
1666 | for (ref = remote_refs; ref; ref = ref->next) { | |
8c5f6f71 | 1667 | int force_ref_update = ref->force || force_update; |
631b5ef2 | 1668 | int reject_reason = 0; |
8c5f6f71 | 1669 | |
20e8b465 | 1670 | if (ref->peer_ref) |
f4e54d02 | 1671 | oidcpy(&ref->new_oid, &ref->peer_ref->new_oid); |
20e8b465 TRC |
1672 | else if (!send_mirror) |
1673 | continue; | |
1674 | ||
f4e54d02 | 1675 | ref->deletion = is_null_oid(&ref->new_oid); |
20e8b465 | 1676 | if (!ref->deletion && |
4a7e27e9 | 1677 | oideq(&ref->old_oid, &ref->new_oid)) { |
20e8b465 TRC |
1678 | ref->status = REF_STATUS_UPTODATE; |
1679 | continue; | |
1680 | } | |
1681 | ||
a272b289 | 1682 | /* |
b2e93f88 AW |
1683 | * If the remote ref has moved and is now different |
1684 | * from what we expect, reject any push. | |
631b5ef2 JH |
1685 | * |
1686 | * It also is an error if the user told us to check | |
1687 | * with the remote-tracking branch to find the value | |
1688 | * to expect, but we did not have such a tracking | |
1689 | * branch. | |
99a1f9ae SK |
1690 | * |
1691 | * If the tip of the remote-tracking ref is unreachable | |
1692 | * from any reflog entry of its local ref indicating a | |
1693 | * possible update since checkout; reject the push. | |
631b5ef2 JH |
1694 | */ |
1695 | if (ref->expect_old_sha1) { | |
9001dc2a | 1696 | if (!oideq(&ref->old_oid, &ref->old_oid_expect)) |
631b5ef2 | 1697 | reject_reason = REF_STATUS_REJECT_STALE; |
99a1f9ae SK |
1698 | else if (ref->check_reachable && ref->unreachable) |
1699 | reject_reason = | |
1700 | REF_STATUS_REJECT_REMOTE_UPDATED; | |
b2e93f88 | 1701 | else |
99a1f9ae SK |
1702 | /* |
1703 | * If the ref isn't stale, and is reachable | |
abcb66c6 | 1704 | * from one of the reflog entries of |
99a1f9ae SK |
1705 | * the local branch, force the update. |
1706 | */ | |
b2e93f88 | 1707 | force_ref_update = 1; |
631b5ef2 JH |
1708 | } |
1709 | ||
1710 | /* | |
b2e93f88 AW |
1711 | * If the update isn't already rejected then check |
1712 | * the usual "must fast-forward" rules. | |
631b5ef2 | 1713 | * |
256b9d70 JH |
1714 | * Decide whether an individual refspec A:B can be |
1715 | * pushed. The push will succeed if any of the | |
1716 | * following are true: | |
20e8b465 | 1717 | * |
a272b289 | 1718 | * (1) the remote reference B does not exist |
20e8b465 | 1719 | * |
a272b289 CR |
1720 | * (2) the remote reference B is being removed (i.e., |
1721 | * pushing :B where no source is specified) | |
20e8b465 | 1722 | * |
256b9d70 JH |
1723 | * (3) the destination is not under refs/tags/, and |
1724 | * if the old and new value is a commit, the new | |
1725 | * is a descendant of the old. | |
20e8b465 | 1726 | * |
a272b289 CR |
1727 | * (4) it is forced using the +A:B notation, or by |
1728 | * passing the --force argument | |
20e8b465 TRC |
1729 | */ |
1730 | ||
b2e93f88 | 1731 | if (!reject_reason && !ref->deletion && !is_null_oid(&ref->old_oid)) { |
59556548 | 1732 | if (starts_with(ref->name, "refs/tags/")) |
631b5ef2 | 1733 | reject_reason = REF_STATUS_REJECT_ALREADY_EXISTS; |
f4e54d02 | 1734 | else if (!has_object_file(&ref->old_oid)) |
631b5ef2 | 1735 | reject_reason = REF_STATUS_REJECT_FETCH_FIRST; |
21e1ee8f SB |
1736 | else if (!lookup_commit_reference_gently(the_repository, &ref->old_oid, 1) || |
1737 | !lookup_commit_reference_gently(the_repository, &ref->new_oid, 1)) | |
631b5ef2 | 1738 | reject_reason = REF_STATUS_REJECT_NEEDS_FORCE; |
6f3d57b6 | 1739 | else if (!ref_newer(&ref->new_oid, &ref->old_oid)) |
631b5ef2 | 1740 | reject_reason = REF_STATUS_REJECT_NONFASTFORWARD; |
20e8b465 | 1741 | } |
631b5ef2 JH |
1742 | |
1743 | /* | |
1744 | * "--force" will defeat any rejection implemented | |
1745 | * by the rules above. | |
1746 | */ | |
1747 | if (!force_ref_update) | |
1748 | ref->status = reject_reason; | |
1749 | else if (reject_reason) | |
1750 | ref->forced_update = 1; | |
20e8b465 TRC |
1751 | } |
1752 | } | |
1753 | ||
56eed342 | 1754 | static void set_merge(struct remote_state *remote_state, struct branch *ret) |
05e73682 | 1755 | { |
9e3751d4 | 1756 | struct remote *remote; |
05e73682 | 1757 | char *ref; |
fcd30b13 | 1758 | struct object_id oid; |
05e73682 JH |
1759 | int i; |
1760 | ||
ee2499fe JK |
1761 | if (!ret) |
1762 | return; /* no branch */ | |
1763 | if (ret->merge) | |
1764 | return; /* already run */ | |
1765 | if (!ret->remote_name || !ret->merge_nr) { | |
1766 | /* | |
1767 | * no merge config; let's make sure we don't confuse callers | |
1768 | * with a non-zero merge_nr but a NULL merge | |
1769 | */ | |
1770 | ret->merge_nr = 0; | |
1771 | return; | |
1772 | } | |
1773 | ||
56eed342 | 1774 | remote = remotes_remote_get(remote_state, ret->remote_name); |
9e3751d4 | 1775 | |
ca56dadb | 1776 | CALLOC_ARRAY(ret->merge, ret->merge_nr); |
05e73682 JH |
1777 | for (i = 0; i < ret->merge_nr; i++) { |
1778 | ret->merge[i] = xcalloc(1, sizeof(**ret->merge)); | |
1779 | ret->merge[i]->src = xstrdup(ret->merge_name[i]); | |
9e3751d4 | 1780 | if (!remote_find_tracking(remote, ret->merge[i]) || |
05e73682 JH |
1781 | strcmp(ret->remote_name, ".")) |
1782 | continue; | |
1783 | if (dwim_ref(ret->merge_name[i], strlen(ret->merge_name[i]), | |
f24c30e0 | 1784 | &oid, &ref, 0) == 1) |
05e73682 JH |
1785 | ret->merge[i]->dst = ref; |
1786 | else | |
1787 | ret->merge[i]->dst = xstrdup(ret->merge_name[i]); | |
1788 | } | |
1789 | } | |
1790 | ||
cf818348 DB |
1791 | struct branch *branch_get(const char *name) |
1792 | { | |
1793 | struct branch *ret; | |
1794 | ||
085b98f6 | 1795 | read_config(the_repository); |
cf818348 | 1796 | if (!name || !*name || !strcmp(name, "HEAD")) |
fd3cb050 | 1797 | ret = the_repository->remote_state->current_branch; |
cf818348 | 1798 | else |
085b98f6 GC |
1799 | ret = make_branch(the_repository->remote_state, name, |
1800 | strlen(name)); | |
56eed342 | 1801 | set_merge(the_repository->remote_state, ret); |
cf818348 DB |
1802 | return ret; |
1803 | } | |
1804 | ||
1805 | int branch_has_merge_config(struct branch *branch) | |
1806 | { | |
1807 | return branch && !!branch->merge; | |
1808 | } | |
1809 | ||
85682c19 SP |
1810 | int branch_merge_matches(struct branch *branch, |
1811 | int i, | |
1812 | const char *refname) | |
cf818348 | 1813 | { |
85682c19 | 1814 | if (!branch || i < 0 || i >= branch->merge_nr) |
cf818348 | 1815 | return 0; |
54457fe5 | 1816 | return refname_match(branch->merge[i]->src, refname); |
cf818348 | 1817 | } |
d71ab174 | 1818 | |
060e7766 | 1819 | __attribute__((format (printf,2,3))) |
3a429d0a JK |
1820 | static const char *error_buf(struct strbuf *err, const char *fmt, ...) |
1821 | { | |
1822 | if (err) { | |
1823 | va_list ap; | |
1824 | va_start(ap, fmt); | |
1825 | strbuf_vaddf(err, fmt, ap); | |
1826 | va_end(ap); | |
1827 | } | |
1828 | return NULL; | |
1829 | } | |
1830 | ||
1831 | const char *branch_get_upstream(struct branch *branch, struct strbuf *err) | |
1832 | { | |
1833 | if (!branch) | |
1834 | return error_buf(err, _("HEAD does not point to a branch")); | |
1ca41a19 JK |
1835 | |
1836 | if (!branch->merge || !branch->merge[0]) { | |
1837 | /* | |
1838 | * no merge config; is it because the user didn't define any, | |
1839 | * or because it is not a real branch, and get_branch | |
1840 | * auto-vivified it? | |
1841 | */ | |
3a429d0a JK |
1842 | if (!ref_exists(branch->refname)) |
1843 | return error_buf(err, _("no such branch: '%s'"), | |
1844 | branch->name); | |
1ca41a19 JK |
1845 | return error_buf(err, |
1846 | _("no upstream configured for branch '%s'"), | |
1847 | branch->name); | |
1848 | } | |
1849 | ||
1850 | if (!branch->merge[0]->dst) | |
3a429d0a JK |
1851 | return error_buf(err, |
1852 | _("upstream branch '%s' not stored as a remote-tracking branch"), | |
1853 | branch->merge[0]->src); | |
3a429d0a | 1854 | |
a9f9f8cc JK |
1855 | return branch->merge[0]->dst; |
1856 | } | |
1857 | ||
e291c75a JK |
1858 | static const char *tracking_for_push_dest(struct remote *remote, |
1859 | const char *refname, | |
1860 | struct strbuf *err) | |
1861 | { | |
1862 | char *ret; | |
1863 | ||
d000414e | 1864 | ret = apply_refspecs(&remote->fetch, refname); |
e291c75a JK |
1865 | if (!ret) |
1866 | return error_buf(err, | |
1867 | _("push destination '%s' on remote '%s' has no local tracking branch"), | |
1868 | refname, remote->name); | |
1869 | return ret; | |
1870 | } | |
1871 | ||
56eed342 GC |
1872 | static const char *branch_get_push_1(struct remote_state *remote_state, |
1873 | struct branch *branch, struct strbuf *err) | |
e291c75a JK |
1874 | { |
1875 | struct remote *remote; | |
1876 | ||
56eed342 GC |
1877 | remote = remotes_remote_get( |
1878 | remote_state, | |
1879 | remotes_pushremote_for_branch(remote_state, branch, NULL)); | |
e291c75a JK |
1880 | if (!remote) |
1881 | return error_buf(err, | |
1882 | _("branch '%s' has no remote for pushing"), | |
1883 | branch->name); | |
1884 | ||
6bdb304b | 1885 | if (remote->push.nr) { |
e291c75a JK |
1886 | char *dst; |
1887 | const char *ret; | |
1888 | ||
d000414e | 1889 | dst = apply_refspecs(&remote->push, branch->refname); |
e291c75a JK |
1890 | if (!dst) |
1891 | return error_buf(err, | |
1892 | _("push refspecs for '%s' do not include '%s'"), | |
1893 | remote->name, branch->name); | |
1894 | ||
1895 | ret = tracking_for_push_dest(remote, dst, err); | |
1896 | free(dst); | |
1897 | return ret; | |
1898 | } | |
1899 | ||
1900 | if (remote->mirror) | |
1901 | return tracking_for_push_dest(remote, branch->refname, err); | |
1902 | ||
1903 | switch (push_default) { | |
1904 | case PUSH_DEFAULT_NOTHING: | |
1905 | return error_buf(err, _("push has no destination (push.default is 'nothing')")); | |
1906 | ||
1907 | case PUSH_DEFAULT_MATCHING: | |
1908 | case PUSH_DEFAULT_CURRENT: | |
1909 | return tracking_for_push_dest(remote, branch->refname, err); | |
1910 | ||
1911 | case PUSH_DEFAULT_UPSTREAM: | |
1912 | return branch_get_upstream(branch, err); | |
1913 | ||
1914 | case PUSH_DEFAULT_UNSPECIFIED: | |
1915 | case PUSH_DEFAULT_SIMPLE: | |
1916 | { | |
1917 | const char *up, *cur; | |
1918 | ||
1919 | up = branch_get_upstream(branch, err); | |
1920 | if (!up) | |
1921 | return NULL; | |
1922 | cur = tracking_for_push_dest(remote, branch->refname, err); | |
1923 | if (!cur) | |
1924 | return NULL; | |
1925 | if (strcmp(cur, up)) | |
1926 | return error_buf(err, | |
1927 | _("cannot resolve 'simple' push to a single destination")); | |
1928 | return cur; | |
1929 | } | |
1930 | } | |
1931 | ||
033abf97 | 1932 | BUG("unhandled push situation"); |
e291c75a JK |
1933 | } |
1934 | ||
1935 | const char *branch_get_push(struct branch *branch, struct strbuf *err) | |
1936 | { | |
56eed342 | 1937 | read_config(the_repository); |
4a2dcb1a GC |
1938 | die_on_missing_branch(the_repository, branch); |
1939 | ||
b10731f4 KM |
1940 | if (!branch) |
1941 | return error_buf(err, _("HEAD does not point to a branch")); | |
1942 | ||
e291c75a | 1943 | if (!branch->push_tracking_ref) |
56eed342 GC |
1944 | branch->push_tracking_ref = branch_get_push_1( |
1945 | the_repository->remote_state, branch, err); | |
e291c75a JK |
1946 | return branch->push_tracking_ref; |
1947 | } | |
1948 | ||
f8fb971e JH |
1949 | static int ignore_symref_update(const char *refname) |
1950 | { | |
f8fb971e JH |
1951 | int flag; |
1952 | ||
744c040b | 1953 | if (!resolve_ref_unsafe(refname, 0, NULL, &flag)) |
f8fb971e JH |
1954 | return 0; /* non-existing refs are OK */ |
1955 | return (flag & REF_ISSYMREF); | |
1956 | } | |
1957 | ||
f166db26 MH |
1958 | /* |
1959 | * Create and return a list of (struct ref) consisting of copies of | |
1960 | * each remote_ref that matches refspec. refspec must be a pattern. | |
1961 | * Fill in the copies' peer_ref to describe the local tracking refs to | |
1962 | * which they map. Omit any references that would map to an existing | |
1963 | * local symbolic ref. | |
1964 | */ | |
4577370e | 1965 | static struct ref *get_expanded_map(const struct ref *remote_refs, |
0ad4a5ff | 1966 | const struct refspec_item *refspec) |
d71ab174 | 1967 | { |
4577370e | 1968 | const struct ref *ref; |
d71ab174 DB |
1969 | struct ref *ret = NULL; |
1970 | struct ref **tail = &ret; | |
1971 | ||
d71ab174 | 1972 | for (ref = remote_refs; ref; ref = ref->next) { |
e31a17f7 MH |
1973 | char *expn_name = NULL; |
1974 | ||
d71ab174 DB |
1975 | if (strchr(ref->name, '^')) |
1976 | continue; /* a dereference item */ | |
e928213f | 1977 | if (match_name_with_pattern(refspec->src, ref->name, |
f8fb971e JH |
1978 | refspec->dst, &expn_name) && |
1979 | !ignore_symref_update(expn_name)) { | |
d71ab174 | 1980 | struct ref *cpy = copy_ref(ref); |
d71ab174 | 1981 | |
e928213f | 1982 | cpy->peer_ref = alloc_ref(expn_name); |
d71ab174 DB |
1983 | if (refspec->force) |
1984 | cpy->peer_ref->force = 1; | |
1985 | *tail = cpy; | |
1986 | tail = &cpy->next; | |
1987 | } | |
e31a17f7 | 1988 | free(expn_name); |
d71ab174 DB |
1989 | } |
1990 | ||
1991 | return ret; | |
1992 | } | |
1993 | ||
4577370e | 1994 | static const struct ref *find_ref_by_name_abbrev(const struct ref *refs, const char *name) |
d71ab174 | 1995 | { |
4577370e | 1996 | const struct ref *ref; |
60650a48 JH |
1997 | const struct ref *best_match = NULL; |
1998 | int best_score = 0; | |
1999 | ||
d71ab174 | 2000 | for (ref = refs; ref; ref = ref->next) { |
60650a48 JH |
2001 | int score = refname_match(name, ref->name); |
2002 | ||
2003 | if (best_score < score) { | |
2004 | best_match = ref; | |
2005 | best_score = score; | |
2006 | } | |
d71ab174 | 2007 | } |
60650a48 | 2008 | return best_match; |
d71ab174 DB |
2009 | } |
2010 | ||
4577370e | 2011 | struct ref *get_remote_ref(const struct ref *remote_refs, const char *name) |
d71ab174 | 2012 | { |
4577370e | 2013 | const struct ref *ref = find_ref_by_name_abbrev(remote_refs, name); |
d71ab174 DB |
2014 | |
2015 | if (!ref) | |
9ad7c5ae | 2016 | return NULL; |
d71ab174 DB |
2017 | |
2018 | return copy_ref(ref); | |
2019 | } | |
2020 | ||
2021 | static struct ref *get_local_ref(const char *name) | |
2022 | { | |
3eb96997 | 2023 | if (!name || name[0] == '\0') |
d71ab174 DB |
2024 | return NULL; |
2025 | ||
59556548 | 2026 | if (starts_with(name, "refs/")) |
59c69c0c | 2027 | return alloc_ref(name); |
d71ab174 | 2028 | |
59556548 CC |
2029 | if (starts_with(name, "heads/") || |
2030 | starts_with(name, "tags/") || | |
2031 | starts_with(name, "remotes/")) | |
8009768e | 2032 | return alloc_ref_with_prefix("refs/", 5, name); |
d71ab174 | 2033 | |
8009768e | 2034 | return alloc_ref_with_prefix("refs/heads/", 11, name); |
d71ab174 DB |
2035 | } |
2036 | ||
4577370e | 2037 | int get_fetch_map(const struct ref *remote_refs, |
0ad4a5ff | 2038 | const struct refspec_item *refspec, |
9ad7c5ae JH |
2039 | struct ref ***tail, |
2040 | int missing_ok) | |
d71ab174 | 2041 | { |
ef00d150 | 2042 | struct ref *ref_map, **rmp; |
d71ab174 | 2043 | |
c0192df6 JK |
2044 | if (refspec->negative) |
2045 | return 0; | |
2046 | ||
d71ab174 DB |
2047 | if (refspec->pattern) { |
2048 | ref_map = get_expanded_map(remote_refs, refspec); | |
2049 | } else { | |
9ad7c5ae JH |
2050 | const char *name = refspec->src[0] ? refspec->src : "HEAD"; |
2051 | ||
6e7b66ee JH |
2052 | if (refspec->exact_sha1) { |
2053 | ref_map = alloc_ref(name); | |
f4e54d02 | 2054 | get_oid_hex(name, &ref_map->old_oid); |
73302051 | 2055 | ref_map->exact_oid = 1; |
6e7b66ee JH |
2056 | } else { |
2057 | ref_map = get_remote_ref(remote_refs, name); | |
2058 | } | |
9ad7c5ae | 2059 | if (!missing_ok && !ref_map) |
0b9c3afd | 2060 | die(_("couldn't find remote ref %s"), name); |
9ad7c5ae JH |
2061 | if (ref_map) { |
2062 | ref_map->peer_ref = get_local_ref(refspec->dst); | |
2063 | if (ref_map->peer_ref && refspec->force) | |
2064 | ref_map->peer_ref->force = 1; | |
2065 | } | |
d71ab174 DB |
2066 | } |
2067 | ||
ef00d150 DB |
2068 | for (rmp = &ref_map; *rmp; ) { |
2069 | if ((*rmp)->peer_ref) { | |
59556548 | 2070 | if (!starts_with((*rmp)->peer_ref->name, "refs/") || |
5c08c1f2 | 2071 | check_refname_format((*rmp)->peer_ref->name, 0)) { |
ef00d150 | 2072 | struct ref *ignore = *rmp; |
0b9c3afd | 2073 | error(_("* Ignoring funny ref '%s' locally"), |
ef00d150 DB |
2074 | (*rmp)->peer_ref->name); |
2075 | *rmp = (*rmp)->next; | |
2076 | free(ignore->peer_ref); | |
2077 | free(ignore); | |
2078 | continue; | |
2079 | } | |
2080 | } | |
2081 | rmp = &((*rmp)->next); | |
d71ab174 DB |
2082 | } |
2083 | ||
8f70a765 AR |
2084 | if (ref_map) |
2085 | tail_link_ref(ref_map, tail); | |
d71ab174 DB |
2086 | |
2087 | return 0; | |
2088 | } | |
be885d96 DB |
2089 | |
2090 | int resolve_remote_symref(struct ref *ref, struct ref *list) | |
2091 | { | |
2092 | if (!ref->symref) | |
2093 | return 0; | |
2094 | for (; list; list = list->next) | |
2095 | if (!strcmp(ref->symref, list->name)) { | |
f4e54d02 | 2096 | oidcpy(&ref->old_oid, &list->old_oid); |
be885d96 DB |
2097 | return 0; |
2098 | } | |
2099 | return 1; | |
2100 | } | |
6d21bf96 JH |
2101 | |
2102 | /* | |
c646d093 | 2103 | * Compute the commit ahead/behind values for the pair branch_name, base. |
d7d1b496 JH |
2104 | * |
2105 | * If abf is AHEAD_BEHIND_FULL, compute the full ahead/behind and return the | |
2106 | * counts in *num_ours and *num_theirs. If abf is AHEAD_BEHIND_QUICK, skip | |
2107 | * the (potentially expensive) a/b computation (*num_ours and *num_theirs are | |
2108 | * set to zero). | |
2109 | * | |
c646d093 DR |
2110 | * Returns -1 if num_ours and num_theirs could not be filled in (e.g., ref |
2111 | * does not exist). Returns 0 if the commits are identical. Returns 1 if | |
2112 | * commits are different. | |
6d21bf96 | 2113 | */ |
c646d093 DR |
2114 | |
2115 | static int stat_branch_pair(const char *branch_name, const char *base, | |
2116 | int *num_ours, int *num_theirs, | |
2117 | enum ahead_behind_flags abf) | |
6d21bf96 | 2118 | { |
fcd30b13 | 2119 | struct object_id oid; |
6d21bf96 | 2120 | struct commit *ours, *theirs; |
6d21bf96 | 2121 | struct rev_info revs; |
c972bf4c | 2122 | struct strvec argv = STRVEC_INIT; |
6d21bf96 | 2123 | |
f2e08739 | 2124 | /* Cannot stat if what we used to build on no longer exists */ |
34c290a6 | 2125 | if (read_ref(base, &oid)) |
f2e08739 | 2126 | return -1; |
2122f675 | 2127 | theirs = lookup_commit_reference(the_repository, &oid); |
6d21bf96 | 2128 | if (!theirs) |
f2e08739 | 2129 | return -1; |
6d21bf96 | 2130 | |
c646d093 | 2131 | if (read_ref(branch_name, &oid)) |
f2e08739 | 2132 | return -1; |
2122f675 | 2133 | ours = lookup_commit_reference(the_repository, &oid); |
6d21bf96 | 2134 | if (!ours) |
f2e08739 | 2135 | return -1; |
6d21bf96 | 2136 | |
d7d1b496 JH |
2137 | *num_theirs = *num_ours = 0; |
2138 | ||
6d21bf96 | 2139 | /* are we the same? */ |
d7d1b496 | 2140 | if (theirs == ours) |
979cb245 | 2141 | return 0; |
d7d1b496 JH |
2142 | if (abf == AHEAD_BEHIND_QUICK) |
2143 | return 1; | |
fd9b544a | 2144 | if (abf != AHEAD_BEHIND_FULL) |
c646d093 | 2145 | BUG("stat_branch_pair: invalid abf '%d'", abf); |
6d21bf96 | 2146 | |
8fbf879e | 2147 | /* Run "rev-list --left-right ours...theirs" internally... */ |
c972bf4c JK |
2148 | strvec_push(&argv, ""); /* ignored */ |
2149 | strvec_push(&argv, "--left-right"); | |
2150 | strvec_pushf(&argv, "%s...%s", | |
f6d8942b JK |
2151 | oid_to_hex(&ours->object.oid), |
2152 | oid_to_hex(&theirs->object.oid)); | |
c972bf4c | 2153 | strvec_push(&argv, "--"); |
6d21bf96 | 2154 | |
2abf3503 | 2155 | repo_init_revisions(the_repository, &revs, NULL); |
d70a9eb6 | 2156 | setup_revisions(argv.nr, argv.v, &revs, NULL); |
81c3ce3c | 2157 | if (prepare_revision_walk(&revs)) |
0b9c3afd | 2158 | die(_("revision walk setup failed")); |
6d21bf96 JH |
2159 | |
2160 | /* ... and count the commits on each side. */ | |
6d21bf96 JH |
2161 | while (1) { |
2162 | struct commit *c = get_revision(&revs); | |
2163 | if (!c) | |
2164 | break; | |
2165 | if (c->object.flags & SYMMETRIC_LEFT) | |
2166 | (*num_ours)++; | |
2167 | else | |
2168 | (*num_theirs)++; | |
2169 | } | |
c0234b2e JH |
2170 | |
2171 | /* clear object flags smudged by the above traversal */ | |
2172 | clear_commit_marks(ours, ALL_REV_FLAGS); | |
2173 | clear_commit_marks(theirs, ALL_REV_FLAGS); | |
0b282cc4 | 2174 | |
c972bf4c | 2175 | strvec_clear(&argv); |
d7d1b496 | 2176 | return 1; |
6d21bf96 JH |
2177 | } |
2178 | ||
c646d093 DR |
2179 | /* |
2180 | * Lookup the tracking branch for the given branch and if present, optionally | |
2181 | * compute the commit ahead/behind values for the pair. | |
2182 | * | |
2183 | * If for_push is true, the tracking branch refers to the push branch, | |
2184 | * otherwise it refers to the upstream branch. | |
2185 | * | |
2186 | * The name of the tracking branch (or NULL if it is not defined) is | |
2187 | * returned via *tracking_name, if it is not itself NULL. | |
2188 | * | |
2189 | * If abf is AHEAD_BEHIND_FULL, compute the full ahead/behind and return the | |
2190 | * counts in *num_ours and *num_theirs. If abf is AHEAD_BEHIND_QUICK, skip | |
2191 | * the (potentially expensive) a/b computation (*num_ours and *num_theirs are | |
2192 | * set to zero). | |
2193 | * | |
2194 | * Returns -1 if num_ours and num_theirs could not be filled in (e.g., no | |
2195 | * upstream defined, or ref does not exist). Returns 0 if the commits are | |
2196 | * identical. Returns 1 if commits are different. | |
2197 | */ | |
2198 | int stat_tracking_info(struct branch *branch, int *num_ours, int *num_theirs, | |
2199 | const char **tracking_name, int for_push, | |
2200 | enum ahead_behind_flags abf) | |
2201 | { | |
2202 | const char *base; | |
2203 | ||
2204 | /* Cannot stat unless we are marked to build on top of somebody else. */ | |
2205 | base = for_push ? branch_get_push(branch, NULL) : | |
2206 | branch_get_upstream(branch, NULL); | |
2207 | if (tracking_name) | |
2208 | *tracking_name = base; | |
2209 | if (!base) | |
2210 | return -1; | |
2211 | ||
2212 | return stat_branch_pair(branch->refname, base, num_ours, num_theirs, abf); | |
2213 | } | |
2214 | ||
6d21bf96 JH |
2215 | /* |
2216 | * Return true when there is anything to report, otherwise false. | |
2217 | */ | |
f39a757d JH |
2218 | int format_tracking_info(struct branch *branch, struct strbuf *sb, |
2219 | enum ahead_behind_flags abf) | |
6d21bf96 | 2220 | { |
f39a757d | 2221 | int ours, theirs, sti; |
979cb245 | 2222 | const char *full_base; |
2f50babe | 2223 | char *base; |
f2e08739 | 2224 | int upstream_is_gone = 0; |
6d21bf96 | 2225 | |
c646d093 | 2226 | sti = stat_tracking_info(branch, &ours, &theirs, &full_base, 0, abf); |
f39a757d | 2227 | if (sti < 0) { |
979cb245 JK |
2228 | if (!full_base) |
2229 | return 0; | |
f2e08739 | 2230 | upstream_is_gone = 1; |
f2e08739 | 2231 | } |
6d21bf96 | 2232 | |
979cb245 | 2233 | base = shorten_unambiguous_ref(full_base, 0); |
f2e08739 JX |
2234 | if (upstream_is_gone) { |
2235 | strbuf_addf(sb, | |
2236 | _("Your branch is based on '%s', but the upstream is gone.\n"), | |
2237 | base); | |
ed9bff08 | 2238 | if (advice_enabled(ADVICE_STATUS_HINTS)) |
a22ae753 | 2239 | strbuf_addstr(sb, |
f2e08739 | 2240 | _(" (use \"git branch --unset-upstream\" to fixup)\n")); |
f39a757d | 2241 | } else if (!sti) { |
f223459b | 2242 | strbuf_addf(sb, |
7560f547 | 2243 | _("Your branch is up to date with '%s'.\n"), |
f223459b | 2244 | base); |
f39a757d JH |
2245 | } else if (abf == AHEAD_BEHIND_QUICK) { |
2246 | strbuf_addf(sb, | |
2247 | _("Your branch and '%s' refer to different commits.\n"), | |
2248 | base); | |
ed9bff08 | 2249 | if (advice_enabled(ADVICE_STATUS_HINTS)) |
f39a757d JH |
2250 | strbuf_addf(sb, _(" (use \"%s\" for details)\n"), |
2251 | "git status --ahead-behind"); | |
f2e08739 | 2252 | } else if (!theirs) { |
8a5b7494 JX |
2253 | strbuf_addf(sb, |
2254 | Q_("Your branch is ahead of '%s' by %d commit.\n", | |
2255 | "Your branch is ahead of '%s' by %d commits.\n", | |
f2e08739 JX |
2256 | ours), |
2257 | base, ours); | |
ed9bff08 | 2258 | if (advice_enabled(ADVICE_STATUS_HINTS)) |
a22ae753 | 2259 | strbuf_addstr(sb, |
491e3075 | 2260 | _(" (use \"git push\" to publish your local commits)\n")); |
f2e08739 | 2261 | } else if (!ours) { |
8a5b7494 JX |
2262 | strbuf_addf(sb, |
2263 | Q_("Your branch is behind '%s' by %d commit, " | |
2264 | "and can be fast-forwarded.\n", | |
2265 | "Your branch is behind '%s' by %d commits, " | |
2266 | "and can be fast-forwarded.\n", | |
f2e08739 JX |
2267 | theirs), |
2268 | base, theirs); | |
ed9bff08 | 2269 | if (advice_enabled(ADVICE_STATUS_HINTS)) |
a22ae753 | 2270 | strbuf_addstr(sb, |
491e3075 | 2271 | _(" (use \"git pull\" to update your local branch)\n")); |
c190ced6 | 2272 | } else { |
8a5b7494 JX |
2273 | strbuf_addf(sb, |
2274 | Q_("Your branch and '%s' have diverged,\n" | |
2275 | "and have %d and %d different commit each, " | |
2276 | "respectively.\n", | |
2277 | "Your branch and '%s' have diverged,\n" | |
2278 | "and have %d and %d different commits each, " | |
2279 | "respectively.\n", | |
f54bea44 | 2280 | ours + theirs), |
f2e08739 | 2281 | base, ours, theirs); |
ed9bff08 | 2282 | if (advice_enabled(ADVICE_STATUS_HINTS)) |
a22ae753 | 2283 | strbuf_addstr(sb, |
491e3075 | 2284 | _(" (use \"git pull\" to merge the remote branch into yours)\n")); |
c190ced6 | 2285 | } |
2f50babe | 2286 | free(base); |
6d21bf96 JH |
2287 | return 1; |
2288 | } | |
454e2025 | 2289 | |
455ade65 MH |
2290 | static int one_local_ref(const char *refname, const struct object_id *oid, |
2291 | int flag, void *cb_data) | |
454e2025 JS |
2292 | { |
2293 | struct ref ***local_tail = cb_data; | |
2294 | struct ref *ref; | |
454e2025 JS |
2295 | |
2296 | /* we already know it starts with refs/ to get here */ | |
8d9c5010 | 2297 | if (check_refname_format(refname + 5, 0)) |
454e2025 JS |
2298 | return 0; |
2299 | ||
96ffc06f | 2300 | ref = alloc_ref(refname); |
f4e54d02 | 2301 | oidcpy(&ref->new_oid, oid); |
454e2025 JS |
2302 | **local_tail = ref; |
2303 | *local_tail = &ref->next; | |
2304 | return 0; | |
2305 | } | |
2306 | ||
2307 | struct ref *get_local_heads(void) | |
2308 | { | |
55f0566f | 2309 | struct ref *local_refs = NULL, **local_tail = &local_refs; |
2b2a5be3 | 2310 | |
454e2025 JS |
2311 | for_each_ref(one_local_ref, &local_tail); |
2312 | return local_refs; | |
2313 | } | |
8ef51733 | 2314 | |
4229f1fa JS |
2315 | struct ref *guess_remote_head(const struct ref *head, |
2316 | const struct ref *refs, | |
2317 | int all) | |
8ef51733 | 2318 | { |
8ef51733 | 2319 | const struct ref *r; |
4229f1fa JS |
2320 | struct ref *list = NULL; |
2321 | struct ref **tail = &list; | |
8ef51733 | 2322 | |
6cb4e6cc | 2323 | if (!head) |
8ef51733 JS |
2324 | return NULL; |
2325 | ||
fbb074c2 JK |
2326 | /* |
2327 | * Some transports support directly peeking at | |
2328 | * where HEAD points; if that is the case, then | |
2329 | * we don't have to guess. | |
2330 | */ | |
2331 | if (head->symref) | |
2332 | return copy_ref(find_ref_by_name(refs, head->symref)); | |
2333 | ||
a471214b | 2334 | /* If a remote branch exists with the default branch name, let's use it. */ |
4229f1fa | 2335 | if (!all) { |
cc0f13c5 JS |
2336 | char *ref = xstrfmt("refs/heads/%s", |
2337 | git_default_branch_name(0)); | |
a471214b JS |
2338 | |
2339 | r = find_ref_by_name(refs, ref); | |
2340 | free(ref); | |
2341 | if (r && oideq(&r->old_oid, &head->old_oid)) | |
2342 | return copy_ref(r); | |
2343 | ||
2344 | /* Fall back to the hard-coded historical default */ | |
4229f1fa | 2345 | r = find_ref_by_name(refs, "refs/heads/master"); |
4a7e27e9 | 2346 | if (r && oideq(&r->old_oid, &head->old_oid)) |
4229f1fa JS |
2347 | return copy_ref(r); |
2348 | } | |
8ef51733 JS |
2349 | |
2350 | /* Look for another ref that points there */ | |
4229f1fa | 2351 | for (r = refs; r; r = r->next) { |
61adfd30 | 2352 | if (r != head && |
59556548 | 2353 | starts_with(r->name, "refs/heads/") && |
4a7e27e9 | 2354 | oideq(&r->old_oid, &head->old_oid)) { |
4229f1fa JS |
2355 | *tail = copy_ref(r); |
2356 | tail = &((*tail)->next); | |
2357 | if (!all) | |
2358 | break; | |
2359 | } | |
2360 | } | |
8ef51733 | 2361 | |
4229f1fa | 2362 | return list; |
8ef51733 | 2363 | } |
f2ef6075 JS |
2364 | |
2365 | struct stale_heads_info { | |
f2ef6075 JS |
2366 | struct string_list *ref_names; |
2367 | struct ref **stale_refs_tail; | |
a2ac50cb | 2368 | struct refspec *rs; |
f2ef6075 JS |
2369 | }; |
2370 | ||
455ade65 MH |
2371 | static int get_stale_heads_cb(const char *refname, const struct object_id *oid, |
2372 | int flags, void *cb_data) | |
f2ef6075 JS |
2373 | { |
2374 | struct stale_heads_info *info = cb_data; | |
e6f63712 | 2375 | struct string_list matches = STRING_LIST_INIT_DUP; |
0ad4a5ff | 2376 | struct refspec_item query; |
e6f63712 | 2377 | int i, stale = 1; |
0ad4a5ff | 2378 | memset(&query, 0, sizeof(struct refspec_item)); |
ed43de6e CMN |
2379 | query.dst = (char *)refname; |
2380 | ||
a2ac50cb | 2381 | query_refspecs_multiple(info->rs, &query, &matches); |
e6f63712 CMN |
2382 | if (matches.nr == 0) |
2383 | goto clean_exit; /* No matches */ | |
ed43de6e CMN |
2384 | |
2385 | /* | |
2386 | * If we did find a suitable refspec and it's not a symref and | |
2387 | * it's not in the list of refs that currently exist in that | |
e6f63712 CMN |
2388 | * remote, we consider it to be stale. In order to deal with |
2389 | * overlapping refspecs, we need to go over all of the | |
2390 | * matching refs. | |
ed43de6e | 2391 | */ |
e6f63712 CMN |
2392 | if (flags & REF_ISSYMREF) |
2393 | goto clean_exit; | |
2394 | ||
2395 | for (i = 0; stale && i < matches.nr; i++) | |
2396 | if (string_list_has_string(info->ref_names, matches.items[i].string)) | |
2397 | stale = 0; | |
2398 | ||
2399 | if (stale) { | |
ed43de6e | 2400 | struct ref *ref = make_linked_ref(refname, &info->stale_refs_tail); |
f4e54d02 | 2401 | oidcpy(&ref->new_oid, oid); |
f2ef6075 | 2402 | } |
ed43de6e | 2403 | |
e6f63712 CMN |
2404 | clean_exit: |
2405 | string_list_clear(&matches, 0); | |
f2ef6075 JS |
2406 | return 0; |
2407 | } | |
2408 | ||
a2ac50cb | 2409 | struct ref *get_stale_heads(struct refspec *rs, struct ref *fetch_map) |
f2ef6075 JS |
2410 | { |
2411 | struct ref *ref, *stale_refs = NULL; | |
183113a5 | 2412 | struct string_list ref_names = STRING_LIST_INIT_NODUP; |
f2ef6075 | 2413 | struct stale_heads_info info; |
2b2a5be3 | 2414 | |
f2ef6075 JS |
2415 | info.ref_names = &ref_names; |
2416 | info.stale_refs_tail = &stale_refs; | |
a2ac50cb | 2417 | info.rs = rs; |
f2ef6075 | 2418 | for (ref = fetch_map; ref; ref = ref->next) |
1d2f80fa | 2419 | string_list_append(&ref_names, ref->name); |
3383e199 | 2420 | string_list_sort(&ref_names); |
f2ef6075 JS |
2421 | for_each_ref(get_stale_heads_cb, &info); |
2422 | string_list_clear(&ref_names, 0); | |
2423 | return stale_refs; | |
2424 | } | |
28f5d176 JH |
2425 | |
2426 | /* | |
2427 | * Compare-and-swap | |
2428 | */ | |
a355b11d | 2429 | static void clear_cas_option(struct push_cas_option *cas) |
28f5d176 JH |
2430 | { |
2431 | int i; | |
2432 | ||
2433 | for (i = 0; i < cas->nr; i++) | |
2434 | free(cas->entry[i].refname); | |
2435 | free(cas->entry); | |
2436 | memset(cas, 0, sizeof(*cas)); | |
2437 | } | |
2438 | ||
2439 | static struct push_cas *add_cas_entry(struct push_cas_option *cas, | |
2440 | const char *refname, | |
2441 | size_t refnamelen) | |
2442 | { | |
2443 | struct push_cas *entry; | |
2444 | ALLOC_GROW(cas->entry, cas->nr + 1, cas->alloc); | |
2445 | entry = &cas->entry[cas->nr++]; | |
2446 | memset(entry, 0, sizeof(*entry)); | |
2447 | entry->refname = xmemdupz(refname, refnamelen); | |
2448 | return entry; | |
2449 | } | |
2450 | ||
8668976b | 2451 | static int parse_push_cas_option(struct push_cas_option *cas, const char *arg, int unset) |
28f5d176 JH |
2452 | { |
2453 | const char *colon; | |
2454 | struct push_cas *entry; | |
2455 | ||
2456 | if (unset) { | |
2457 | /* "--no-<option>" */ | |
2458 | clear_cas_option(cas); | |
2459 | return 0; | |
2460 | } | |
2461 | ||
2462 | if (!arg) { | |
2463 | /* just "--<option>" */ | |
2464 | cas->use_tracking_for_rest = 1; | |
2465 | return 0; | |
2466 | } | |
2467 | ||
2468 | /* "--<option>=refname" or "--<option>=refname:value" */ | |
2469 | colon = strchrnul(arg, ':'); | |
2470 | entry = add_cas_entry(cas, arg, colon - arg); | |
2471 | if (!*colon) | |
2472 | entry->use_tracking = 1; | |
eee98e74 | 2473 | else if (!colon[1]) |
b8566f8f | 2474 | oidclr(&entry->expect); |
2475 | else if (get_oid(colon + 1, &entry->expect)) | |
0b9c3afd NTND |
2476 | return error(_("cannot parse expected object name '%s'"), |
2477 | colon + 1); | |
28f5d176 JH |
2478 | return 0; |
2479 | } | |
2480 | ||
2481 | int parseopt_push_cas_option(const struct option *opt, const char *arg, int unset) | |
2482 | { | |
2483 | return parse_push_cas_option(opt->value, arg, unset); | |
2484 | } | |
91048a95 JH |
2485 | |
2486 | int is_empty_cas(const struct push_cas_option *cas) | |
2487 | { | |
2488 | return !cas->use_tracking_for_rest && !cas->nr; | |
2489 | } | |
2490 | ||
2491 | /* | |
2492 | * Look at remote.fetch refspec and see if we have a remote | |
99a1f9ae SK |
2493 | * tracking branch for the refname there. Fill the name of |
2494 | * the remote-tracking branch in *dst_refname, and the name | |
2495 | * of the commit object at its tip in oid[]. | |
91048a95 JH |
2496 | * If we cannot do so, return negative to signal an error. |
2497 | */ | |
2498 | static int remote_tracking(struct remote *remote, const char *refname, | |
99a1f9ae | 2499 | struct object_id *oid, char **dst_refname) |
91048a95 JH |
2500 | { |
2501 | char *dst; | |
2502 | ||
d000414e | 2503 | dst = apply_refspecs(&remote->fetch, refname); |
91048a95 JH |
2504 | if (!dst) |
2505 | return -1; /* no tracking ref for refname at remote */ | |
34c290a6 | 2506 | if (read_ref(dst, oid)) |
91048a95 | 2507 | return -1; /* we know what the tracking ref is but we cannot read it */ |
99a1f9ae SK |
2508 | |
2509 | *dst_refname = dst; | |
91048a95 JH |
2510 | return 0; |
2511 | } | |
2512 | ||
99a1f9ae SK |
2513 | /* |
2514 | * The struct "reflog_commit_array" and related helper functions | |
2515 | * are used for collecting commits into an array during reflog | |
2516 | * traversals in "check_and_collect_until()". | |
2517 | */ | |
2518 | struct reflog_commit_array { | |
2519 | struct commit **item; | |
2520 | size_t nr, alloc; | |
2521 | }; | |
2522 | ||
9865b6e6 | 2523 | #define REFLOG_COMMIT_ARRAY_INIT { 0 } |
99a1f9ae SK |
2524 | |
2525 | /* Append a commit to the array. */ | |
2526 | static void append_commit(struct reflog_commit_array *arr, | |
2527 | struct commit *commit) | |
2528 | { | |
2529 | ALLOC_GROW(arr->item, arr->nr + 1, arr->alloc); | |
2530 | arr->item[arr->nr++] = commit; | |
2531 | } | |
2532 | ||
2533 | /* Free and reset the array. */ | |
2534 | static void free_commit_array(struct reflog_commit_array *arr) | |
2535 | { | |
2536 | FREE_AND_NULL(arr->item); | |
2537 | arr->nr = arr->alloc = 0; | |
2538 | } | |
2539 | ||
2540 | struct check_and_collect_until_cb_data { | |
2541 | struct commit *remote_commit; | |
2542 | struct reflog_commit_array *local_commits; | |
2543 | timestamp_t remote_reflog_timestamp; | |
2544 | }; | |
2545 | ||
2546 | /* Get the timestamp of the latest entry. */ | |
2547 | static int peek_reflog(struct object_id *o_oid, struct object_id *n_oid, | |
2548 | const char *ident, timestamp_t timestamp, | |
2549 | int tz, const char *message, void *cb_data) | |
2550 | { | |
2551 | timestamp_t *ts = cb_data; | |
2552 | *ts = timestamp; | |
2553 | return 1; | |
2554 | } | |
2555 | ||
2556 | static int check_and_collect_until(struct object_id *o_oid, | |
2557 | struct object_id *n_oid, | |
2558 | const char *ident, timestamp_t timestamp, | |
2559 | int tz, const char *message, void *cb_data) | |
2560 | { | |
2561 | struct commit *commit; | |
2562 | struct check_and_collect_until_cb_data *cb = cb_data; | |
2563 | ||
2564 | /* An entry was found. */ | |
2565 | if (oideq(n_oid, &cb->remote_commit->object.oid)) | |
2566 | return 1; | |
2567 | ||
2568 | if ((commit = lookup_commit_reference(the_repository, n_oid))) | |
2569 | append_commit(cb->local_commits, commit); | |
2570 | ||
2571 | /* | |
2572 | * If the reflog entry timestamp is older than the remote ref's | |
2573 | * latest reflog entry, there is no need to check or collect | |
2574 | * entries older than this one. | |
2575 | */ | |
2576 | if (timestamp < cb->remote_reflog_timestamp) | |
2577 | return -1; | |
2578 | ||
2579 | return 0; | |
2580 | } | |
2581 | ||
2582 | #define MERGE_BASES_BATCH_SIZE 8 | |
2583 | ||
2584 | /* | |
2585 | * Iterate through the reflog of the local ref to check if there is an entry | |
2586 | * for the given remote-tracking ref; runs until the timestamp of an entry is | |
2587 | * older than latest timestamp of remote-tracking ref's reflog. Any commits | |
2588 | * are that seen along the way are collected into an array to check if the | |
2589 | * remote-tracking ref is reachable from any of them. | |
2590 | */ | |
2591 | static int is_reachable_in_reflog(const char *local, const struct ref *remote) | |
2592 | { | |
2593 | timestamp_t date; | |
2594 | struct commit *commit; | |
2595 | struct commit **chunk; | |
2596 | struct check_and_collect_until_cb_data cb; | |
2597 | struct reflog_commit_array arr = REFLOG_COMMIT_ARRAY_INIT; | |
2598 | size_t size = 0; | |
2599 | int ret = 0; | |
2600 | ||
2601 | commit = lookup_commit_reference(the_repository, &remote->old_oid); | |
2602 | if (!commit) | |
2603 | goto cleanup_return; | |
2604 | ||
2605 | /* | |
2606 | * Get the timestamp from the latest entry | |
2607 | * of the remote-tracking ref's reflog. | |
2608 | */ | |
2609 | for_each_reflog_ent_reverse(remote->tracking_ref, peek_reflog, &date); | |
2610 | ||
2611 | cb.remote_commit = commit; | |
2612 | cb.local_commits = &arr; | |
2613 | cb.remote_reflog_timestamp = date; | |
2614 | ret = for_each_reflog_ent_reverse(local, check_and_collect_until, &cb); | |
2615 | ||
2616 | /* We found an entry in the reflog. */ | |
2617 | if (ret > 0) | |
2618 | goto cleanup_return; | |
2619 | ||
2620 | /* | |
2621 | * Check if the remote commit is reachable from any | |
2622 | * of the commits in the collected array, in batches. | |
2623 | */ | |
2624 | for (chunk = arr.item; chunk < arr.item + arr.nr; chunk += size) { | |
2625 | size = arr.item + arr.nr - chunk; | |
2626 | if (MERGE_BASES_BATCH_SIZE < size) | |
2627 | size = MERGE_BASES_BATCH_SIZE; | |
2628 | ||
2629 | if ((ret = in_merge_bases_many(commit, size, chunk))) | |
2630 | break; | |
2631 | } | |
2632 | ||
2633 | cleanup_return: | |
2634 | free_commit_array(&arr); | |
2635 | return ret; | |
2636 | } | |
2637 | ||
2638 | /* | |
2639 | * Check for reachability of a remote-tracking | |
2640 | * ref in the reflog entries of its local ref. | |
2641 | */ | |
2642 | static void check_if_includes_upstream(struct ref *remote) | |
2643 | { | |
2644 | struct ref *local = get_local_ref(remote->name); | |
2645 | if (!local) | |
2646 | return; | |
2647 | ||
2648 | if (is_reachable_in_reflog(local->name, remote) <= 0) | |
2649 | remote->unreachable = 1; | |
2650 | } | |
2651 | ||
91048a95 JH |
2652 | static void apply_cas(struct push_cas_option *cas, |
2653 | struct remote *remote, | |
2654 | struct ref *ref) | |
2655 | { | |
2656 | int i; | |
2657 | ||
2658 | /* Find an explicit --<option>=<name>[:<value>] entry */ | |
2659 | for (i = 0; i < cas->nr; i++) { | |
2660 | struct push_cas *entry = &cas->entry[i]; | |
54457fe5 | 2661 | if (!refname_match(entry->refname, ref->name)) |
91048a95 JH |
2662 | continue; |
2663 | ref->expect_old_sha1 = 1; | |
2664 | if (!entry->use_tracking) | |
b8566f8f | 2665 | oidcpy(&ref->old_oid_expect, &entry->expect); |
99a1f9ae SK |
2666 | else if (remote_tracking(remote, ref->name, |
2667 | &ref->old_oid_expect, | |
2668 | &ref->tracking_ref)) | |
64ac39af | 2669 | oidclr(&ref->old_oid_expect); |
99a1f9ae SK |
2670 | else |
2671 | ref->check_reachable = cas->use_force_if_includes; | |
91048a95 JH |
2672 | return; |
2673 | } | |
2674 | ||
2675 | /* Are we using "--<option>" to cover all? */ | |
2676 | if (!cas->use_tracking_for_rest) | |
2677 | return; | |
2678 | ||
2679 | ref->expect_old_sha1 = 1; | |
99a1f9ae SK |
2680 | if (remote_tracking(remote, ref->name, |
2681 | &ref->old_oid_expect, | |
2682 | &ref->tracking_ref)) | |
64ac39af | 2683 | oidclr(&ref->old_oid_expect); |
99a1f9ae SK |
2684 | else |
2685 | ref->check_reachable = cas->use_force_if_includes; | |
91048a95 JH |
2686 | } |
2687 | ||
2688 | void apply_push_cas(struct push_cas_option *cas, | |
2689 | struct remote *remote, | |
2690 | struct ref *remote_refs) | |
2691 | { | |
2692 | struct ref *ref; | |
99a1f9ae | 2693 | for (ref = remote_refs; ref; ref = ref->next) { |
91048a95 | 2694 | apply_cas(cas, remote, ref); |
99a1f9ae SK |
2695 | |
2696 | /* | |
2697 | * If "compare-and-swap" is in "use_tracking[_for_rest]" | |
2698 | * mode, and if "--force-if-includes" was specified, run | |
2699 | * the check. | |
2700 | */ | |
2701 | if (ref->check_reachable) | |
2702 | check_if_includes_upstream(ref); | |
2703 | } | |
91048a95 | 2704 | } |
fd3cb050 GC |
2705 | |
2706 | struct remote_state *remote_state_new(void) | |
2707 | { | |
2708 | struct remote_state *r = xmalloc(sizeof(*r)); | |
2709 | ||
2710 | memset(r, 0, sizeof(*r)); | |
2711 | ||
2712 | hashmap_init(&r->remotes_hash, remotes_hash_cmp, NULL, 0); | |
4a2dcb1a | 2713 | hashmap_init(&r->branches_hash, branches_hash_cmp, NULL, 0); |
fd3cb050 GC |
2714 | return r; |
2715 | } | |
2716 | ||
2717 | void remote_state_clear(struct remote_state *remote_state) | |
2718 | { | |
2719 | int i; | |
2720 | ||
2721 | for (i = 0; i < remote_state->remotes_nr; i++) { | |
2722 | remote_clear(remote_state->remotes[i]); | |
2723 | } | |
2724 | FREE_AND_NULL(remote_state->remotes); | |
2725 | remote_state->remotes_alloc = 0; | |
2726 | remote_state->remotes_nr = 0; | |
2727 | ||
2728 | hashmap_clear_and_free(&remote_state->remotes_hash, struct remote, ent); | |
4a2dcb1a | 2729 | hashmap_clear_and_free(&remote_state->branches_hash, struct remote, ent); |
fd3cb050 | 2730 | } |