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Commit | Line | Data |
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5751f490 DB |
1 | #include "cache.h" |
2 | #include "remote.h" | |
3 | #include "refs.h" | |
4 | ||
844112ca JH |
5 | struct counted_string { |
6 | size_t len; | |
7 | const char *s; | |
8 | }; | |
55029ae4 DB |
9 | struct rewrite { |
10 | const char *base; | |
844112ca JH |
11 | size_t baselen; |
12 | struct counted_string *instead_of; | |
55029ae4 DB |
13 | int instead_of_nr; |
14 | int instead_of_alloc; | |
15 | }; | |
16 | ||
5751f490 | 17 | static struct remote **remotes; |
2d31347b DB |
18 | static int remotes_alloc; |
19 | static int remotes_nr; | |
5751f490 | 20 | |
cf818348 | 21 | static struct branch **branches; |
2d31347b DB |
22 | static int branches_alloc; |
23 | static int branches_nr; | |
cf818348 DB |
24 | |
25 | static struct branch *current_branch; | |
26 | static const char *default_remote_name; | |
27 | ||
55029ae4 DB |
28 | static struct rewrite **rewrite; |
29 | static int rewrite_alloc; | |
30 | static int rewrite_nr; | |
31 | ||
5751f490 DB |
32 | #define BUF_SIZE (2048) |
33 | static char buffer[BUF_SIZE]; | |
34 | ||
55029ae4 DB |
35 | static const char *alias_url(const char *url) |
36 | { | |
37 | int i, j; | |
844112ca JH |
38 | char *ret; |
39 | struct counted_string *longest; | |
40 | int longest_i; | |
41 | ||
42 | longest = NULL; | |
43 | longest_i = -1; | |
55029ae4 DB |
44 | for (i = 0; i < rewrite_nr; i++) { |
45 | if (!rewrite[i]) | |
46 | continue; | |
47 | for (j = 0; j < rewrite[i]->instead_of_nr; j++) { | |
844112ca JH |
48 | if (!prefixcmp(url, rewrite[i]->instead_of[j].s) && |
49 | (!longest || | |
50 | longest->len < rewrite[i]->instead_of[j].len)) { | |
51 | longest = &(rewrite[i]->instead_of[j]); | |
52 | longest_i = i; | |
55029ae4 DB |
53 | } |
54 | } | |
55 | } | |
844112ca JH |
56 | if (!longest) |
57 | return url; | |
58 | ||
59 | ret = malloc(rewrite[longest_i]->baselen + | |
60 | (strlen(url) - longest->len) + 1); | |
61 | strcpy(ret, rewrite[longest_i]->base); | |
62 | strcpy(ret + rewrite[longest_i]->baselen, url + longest->len); | |
63 | return ret; | |
55029ae4 DB |
64 | } |
65 | ||
5751f490 DB |
66 | static void add_push_refspec(struct remote *remote, const char *ref) |
67 | { | |
2d31347b DB |
68 | ALLOC_GROW(remote->push_refspec, |
69 | remote->push_refspec_nr + 1, | |
70 | remote->push_refspec_alloc); | |
71 | remote->push_refspec[remote->push_refspec_nr++] = ref; | |
5751f490 DB |
72 | } |
73 | ||
5d46c9d4 DB |
74 | static void add_fetch_refspec(struct remote *remote, const char *ref) |
75 | { | |
2d31347b DB |
76 | ALLOC_GROW(remote->fetch_refspec, |
77 | remote->fetch_refspec_nr + 1, | |
78 | remote->fetch_refspec_alloc); | |
79 | remote->fetch_refspec[remote->fetch_refspec_nr++] = ref; | |
5d46c9d4 DB |
80 | } |
81 | ||
28b91f8a | 82 | static void add_url(struct remote *remote, const char *url) |
5751f490 | 83 | { |
2d31347b DB |
84 | ALLOC_GROW(remote->url, remote->url_nr + 1, remote->url_alloc); |
85 | remote->url[remote->url_nr++] = url; | |
5751f490 DB |
86 | } |
87 | ||
55029ae4 DB |
88 | static void add_url_alias(struct remote *remote, const char *url) |
89 | { | |
90 | add_url(remote, alias_url(url)); | |
91 | } | |
92 | ||
5751f490 DB |
93 | static struct remote *make_remote(const char *name, int len) |
94 | { | |
2d31347b DB |
95 | struct remote *ret; |
96 | int i; | |
5751f490 | 97 | |
2d31347b DB |
98 | for (i = 0; i < remotes_nr; i++) { |
99 | if (len ? (!strncmp(name, remotes[i]->name, len) && | |
100 | !remotes[i]->name[len]) : | |
101 | !strcmp(name, remotes[i]->name)) | |
102 | return remotes[i]; | |
5751f490 DB |
103 | } |
104 | ||
2d31347b DB |
105 | ret = xcalloc(1, sizeof(struct remote)); |
106 | ALLOC_GROW(remotes, remotes_nr + 1, remotes_alloc); | |
107 | remotes[remotes_nr++] = ret; | |
5751f490 | 108 | if (len) |
2d31347b | 109 | ret->name = xstrndup(name, len); |
5751f490 | 110 | else |
2d31347b DB |
111 | ret->name = xstrdup(name); |
112 | return ret; | |
5751f490 DB |
113 | } |
114 | ||
cf818348 DB |
115 | static void add_merge(struct branch *branch, const char *name) |
116 | { | |
2d31347b DB |
117 | ALLOC_GROW(branch->merge_name, branch->merge_nr + 1, |
118 | branch->merge_alloc); | |
119 | branch->merge_name[branch->merge_nr++] = name; | |
cf818348 DB |
120 | } |
121 | ||
122 | static struct branch *make_branch(const char *name, int len) | |
123 | { | |
2d31347b DB |
124 | struct branch *ret; |
125 | int i; | |
cf818348 DB |
126 | char *refname; |
127 | ||
2d31347b DB |
128 | for (i = 0; i < branches_nr; i++) { |
129 | if (len ? (!strncmp(name, branches[i]->name, len) && | |
130 | !branches[i]->name[len]) : | |
131 | !strcmp(name, branches[i]->name)) | |
132 | return branches[i]; | |
cf818348 DB |
133 | } |
134 | ||
2d31347b DB |
135 | ALLOC_GROW(branches, branches_nr + 1, branches_alloc); |
136 | ret = xcalloc(1, sizeof(struct branch)); | |
137 | branches[branches_nr++] = ret; | |
cf818348 | 138 | if (len) |
2d31347b | 139 | ret->name = xstrndup(name, len); |
cf818348 | 140 | else |
2d31347b | 141 | ret->name = xstrdup(name); |
cf818348 DB |
142 | refname = malloc(strlen(name) + strlen("refs/heads/") + 1); |
143 | strcpy(refname, "refs/heads/"); | |
2d31347b DB |
144 | strcpy(refname + strlen("refs/heads/"), ret->name); |
145 | ret->refname = refname; | |
cf818348 | 146 | |
2d31347b | 147 | return ret; |
cf818348 DB |
148 | } |
149 | ||
55029ae4 DB |
150 | static struct rewrite *make_rewrite(const char *base, int len) |
151 | { | |
152 | struct rewrite *ret; | |
153 | int i; | |
154 | ||
155 | for (i = 0; i < rewrite_nr; i++) { | |
844112ca JH |
156 | if (len |
157 | ? (len == rewrite[i]->baselen && | |
158 | !strncmp(base, rewrite[i]->base, len)) | |
159 | : !strcmp(base, rewrite[i]->base)) | |
55029ae4 DB |
160 | return rewrite[i]; |
161 | } | |
162 | ||
163 | ALLOC_GROW(rewrite, rewrite_nr + 1, rewrite_alloc); | |
164 | ret = xcalloc(1, sizeof(struct rewrite)); | |
165 | rewrite[rewrite_nr++] = ret; | |
844112ca | 166 | if (len) { |
55029ae4 | 167 | ret->base = xstrndup(base, len); |
844112ca JH |
168 | ret->baselen = len; |
169 | } | |
170 | else { | |
55029ae4 | 171 | ret->base = xstrdup(base); |
844112ca JH |
172 | ret->baselen = strlen(base); |
173 | } | |
55029ae4 DB |
174 | return ret; |
175 | } | |
176 | ||
177 | static void add_instead_of(struct rewrite *rewrite, const char *instead_of) | |
178 | { | |
179 | ALLOC_GROW(rewrite->instead_of, rewrite->instead_of_nr + 1, rewrite->instead_of_alloc); | |
844112ca JH |
180 | rewrite->instead_of[rewrite->instead_of_nr].s = instead_of; |
181 | rewrite->instead_of[rewrite->instead_of_nr].len = strlen(instead_of); | |
182 | rewrite->instead_of_nr++; | |
55029ae4 DB |
183 | } |
184 | ||
5751f490 DB |
185 | static void read_remotes_file(struct remote *remote) |
186 | { | |
187 | FILE *f = fopen(git_path("remotes/%s", remote->name), "r"); | |
188 | ||
189 | if (!f) | |
190 | return; | |
191 | while (fgets(buffer, BUF_SIZE, f)) { | |
192 | int value_list; | |
193 | char *s, *p; | |
194 | ||
195 | if (!prefixcmp(buffer, "URL:")) { | |
196 | value_list = 0; | |
197 | s = buffer + 4; | |
198 | } else if (!prefixcmp(buffer, "Push:")) { | |
199 | value_list = 1; | |
200 | s = buffer + 5; | |
5d46c9d4 DB |
201 | } else if (!prefixcmp(buffer, "Pull:")) { |
202 | value_list = 2; | |
203 | s = buffer + 5; | |
5751f490 DB |
204 | } else |
205 | continue; | |
206 | ||
207 | while (isspace(*s)) | |
208 | s++; | |
209 | if (!*s) | |
210 | continue; | |
211 | ||
212 | p = s + strlen(s); | |
213 | while (isspace(p[-1])) | |
214 | *--p = 0; | |
215 | ||
216 | switch (value_list) { | |
217 | case 0: | |
55029ae4 | 218 | add_url_alias(remote, xstrdup(s)); |
5751f490 DB |
219 | break; |
220 | case 1: | |
221 | add_push_refspec(remote, xstrdup(s)); | |
222 | break; | |
5d46c9d4 DB |
223 | case 2: |
224 | add_fetch_refspec(remote, xstrdup(s)); | |
225 | break; | |
5751f490 DB |
226 | } |
227 | } | |
228 | fclose(f); | |
229 | } | |
230 | ||
231 | static void read_branches_file(struct remote *remote) | |
232 | { | |
233 | const char *slash = strchr(remote->name, '/'); | |
cf818348 DB |
234 | char *frag; |
235 | char *branch; | |
5751f490 DB |
236 | int n = slash ? slash - remote->name : 1000; |
237 | FILE *f = fopen(git_path("branches/%.*s", n, remote->name), "r"); | |
238 | char *s, *p; | |
239 | int len; | |
240 | ||
241 | if (!f) | |
242 | return; | |
243 | s = fgets(buffer, BUF_SIZE, f); | |
244 | fclose(f); | |
245 | if (!s) | |
246 | return; | |
247 | while (isspace(*s)) | |
248 | s++; | |
249 | if (!*s) | |
250 | return; | |
251 | p = s + strlen(s); | |
252 | while (isspace(p[-1])) | |
253 | *--p = 0; | |
254 | len = p - s; | |
255 | if (slash) | |
256 | len += strlen(slash); | |
257 | p = xmalloc(len + 1); | |
258 | strcpy(p, s); | |
259 | if (slash) | |
260 | strcat(p, slash); | |
cf818348 DB |
261 | frag = strchr(p, '#'); |
262 | if (frag) { | |
263 | *(frag++) = '\0'; | |
264 | branch = xmalloc(strlen(frag) + 12); | |
265 | strcpy(branch, "refs/heads/"); | |
266 | strcat(branch, frag); | |
267 | } else { | |
268 | branch = "refs/heads/master"; | |
269 | } | |
55029ae4 | 270 | add_url_alias(remote, p); |
cf818348 | 271 | add_fetch_refspec(remote, branch); |
d71ab174 | 272 | remote->fetch_tags = 1; /* always auto-follow */ |
5751f490 DB |
273 | } |
274 | ||
5751f490 DB |
275 | static int handle_config(const char *key, const char *value) |
276 | { | |
277 | const char *name; | |
278 | const char *subkey; | |
279 | struct remote *remote; | |
cf818348 DB |
280 | struct branch *branch; |
281 | if (!prefixcmp(key, "branch.")) { | |
282 | name = key + 7; | |
283 | subkey = strrchr(name, '.'); | |
cf818348 DB |
284 | if (!subkey) |
285 | return 0; | |
896c0535 | 286 | branch = make_branch(name, subkey - name); |
cf818348 | 287 | if (!strcmp(subkey, ".remote")) { |
d2370cc2 JH |
288 | if (!value) |
289 | return config_error_nonbool(key); | |
cf818348 DB |
290 | branch->remote_name = xstrdup(value); |
291 | if (branch == current_branch) | |
292 | default_remote_name = branch->remote_name; | |
d2370cc2 JH |
293 | } else if (!strcmp(subkey, ".merge")) { |
294 | if (!value) | |
295 | return config_error_nonbool(key); | |
cf818348 | 296 | add_merge(branch, xstrdup(value)); |
d2370cc2 | 297 | } |
cf818348 | 298 | return 0; |
5751f490 | 299 | } |
55029ae4 DB |
300 | if (!prefixcmp(key, "url.")) { |
301 | struct rewrite *rewrite; | |
302 | name = key + 5; | |
303 | subkey = strrchr(name, '.'); | |
304 | if (!subkey) | |
305 | return 0; | |
306 | rewrite = make_rewrite(name, subkey - name); | |
307 | if (!strcmp(subkey, ".insteadof")) { | |
308 | if (!value) | |
309 | return config_error_nonbool(key); | |
310 | add_instead_of(rewrite, xstrdup(value)); | |
311 | } | |
312 | } | |
5751f490 DB |
313 | if (prefixcmp(key, "remote.")) |
314 | return 0; | |
315 | name = key + 7; | |
316 | subkey = strrchr(name, '.'); | |
317 | if (!subkey) | |
318 | return error("Config with no key for remote %s", name); | |
319 | if (*subkey == '/') { | |
320 | warning("Config remote shorthand cannot begin with '/': %s", name); | |
321 | return 0; | |
322 | } | |
323 | remote = make_remote(name, subkey - name); | |
324 | if (!value) { | |
325 | /* if we ever have a boolean variable, e.g. "remote.*.disabled" | |
326 | * [remote "frotz"] | |
327 | * disabled | |
328 | * is a valid way to set it to true; we get NULL in value so | |
329 | * we need to handle it here. | |
330 | * | |
331 | * if (!strcmp(subkey, ".disabled")) { | |
332 | * val = git_config_bool(key, value); | |
333 | * return 0; | |
334 | * } else | |
335 | * | |
336 | */ | |
337 | return 0; /* ignore unknown booleans */ | |
338 | } | |
339 | if (!strcmp(subkey, ".url")) { | |
28b91f8a | 340 | add_url(remote, xstrdup(value)); |
5751f490 DB |
341 | } else if (!strcmp(subkey, ".push")) { |
342 | add_push_refspec(remote, xstrdup(value)); | |
5d46c9d4 DB |
343 | } else if (!strcmp(subkey, ".fetch")) { |
344 | add_fetch_refspec(remote, xstrdup(value)); | |
5751f490 DB |
345 | } else if (!strcmp(subkey, ".receivepack")) { |
346 | if (!remote->receivepack) | |
347 | remote->receivepack = xstrdup(value); | |
348 | else | |
349 | error("more than one receivepack given, using the first"); | |
0012ba21 DB |
350 | } else if (!strcmp(subkey, ".uploadpack")) { |
351 | if (!remote->uploadpack) | |
352 | remote->uploadpack = xstrdup(value); | |
353 | else | |
354 | error("more than one uploadpack given, using the first"); | |
d71ab174 DB |
355 | } else if (!strcmp(subkey, ".tagopt")) { |
356 | if (!strcmp(value, "--no-tags")) | |
357 | remote->fetch_tags = -1; | |
14c98218 SV |
358 | } else if (!strcmp(subkey, ".proxy")) { |
359 | remote->http_proxy = xstrdup(value); | |
5751f490 DB |
360 | } |
361 | return 0; | |
362 | } | |
363 | ||
55029ae4 DB |
364 | static void alias_all_urls(void) |
365 | { | |
366 | int i, j; | |
367 | for (i = 0; i < remotes_nr; i++) { | |
368 | if (!remotes[i]) | |
369 | continue; | |
370 | for (j = 0; j < remotes[i]->url_nr; j++) { | |
371 | remotes[i]->url[j] = alias_url(remotes[i]->url[j]); | |
372 | } | |
373 | } | |
374 | } | |
375 | ||
5751f490 DB |
376 | static void read_config(void) |
377 | { | |
378 | unsigned char sha1[20]; | |
379 | const char *head_ref; | |
380 | int flag; | |
381 | if (default_remote_name) // did this already | |
382 | return; | |
383 | default_remote_name = xstrdup("origin"); | |
384 | current_branch = NULL; | |
385 | head_ref = resolve_ref("HEAD", sha1, 0, &flag); | |
386 | if (head_ref && (flag & REF_ISSYMREF) && | |
387 | !prefixcmp(head_ref, "refs/heads/")) { | |
cf818348 DB |
388 | current_branch = |
389 | make_branch(head_ref + strlen("refs/heads/"), 0); | |
5751f490 DB |
390 | } |
391 | git_config(handle_config); | |
55029ae4 | 392 | alias_all_urls(); |
5751f490 DB |
393 | } |
394 | ||
d71ab174 | 395 | struct refspec *parse_ref_spec(int nr_refspec, const char **refspec) |
6b62816c DB |
396 | { |
397 | int i; | |
398 | struct refspec *rs = xcalloc(sizeof(*rs), nr_refspec); | |
399 | for (i = 0; i < nr_refspec; i++) { | |
400 | const char *sp, *ep, *gp; | |
401 | sp = refspec[i]; | |
402 | if (*sp == '+') { | |
403 | rs[i].force = 1; | |
404 | sp++; | |
405 | } | |
406 | gp = strchr(sp, '*'); | |
407 | ep = strchr(sp, ':'); | |
408 | if (gp && ep && gp > ep) | |
409 | gp = NULL; | |
410 | if (ep) { | |
411 | if (ep[1]) { | |
412 | const char *glob = strchr(ep + 1, '*'); | |
413 | if (!glob) | |
414 | gp = NULL; | |
415 | if (gp) | |
416 | rs[i].dst = xstrndup(ep + 1, | |
417 | glob - ep - 1); | |
418 | else | |
419 | rs[i].dst = xstrdup(ep + 1); | |
420 | } | |
421 | } else { | |
422 | ep = sp + strlen(sp); | |
423 | } | |
424 | if (gp) { | |
425 | rs[i].pattern = 1; | |
426 | ep = gp; | |
427 | } | |
428 | rs[i].src = xstrndup(sp, ep - sp); | |
429 | } | |
430 | return rs; | |
431 | } | |
432 | ||
df93e33c DB |
433 | static int valid_remote_nick(const char *name) |
434 | { | |
435 | if (!name[0] || /* not empty */ | |
436 | (name[0] == '.' && /* not "." */ | |
437 | (!name[1] || /* not ".." */ | |
438 | (name[1] == '.' && !name[2])))) | |
439 | return 0; | |
440 | return !strchr(name, '/'); /* no slash */ | |
441 | } | |
442 | ||
5751f490 DB |
443 | struct remote *remote_get(const char *name) |
444 | { | |
445 | struct remote *ret; | |
446 | ||
447 | read_config(); | |
448 | if (!name) | |
449 | name = default_remote_name; | |
450 | ret = make_remote(name, 0); | |
df93e33c | 451 | if (valid_remote_nick(name)) { |
28b91f8a | 452 | if (!ret->url) |
5751f490 | 453 | read_remotes_file(ret); |
28b91f8a | 454 | if (!ret->url) |
5751f490 DB |
455 | read_branches_file(ret); |
456 | } | |
28b91f8a | 457 | if (!ret->url) |
55029ae4 | 458 | add_url_alias(ret, name); |
28b91f8a | 459 | if (!ret->url) |
5751f490 | 460 | return NULL; |
5d46c9d4 | 461 | ret->fetch = parse_ref_spec(ret->fetch_refspec_nr, ret->fetch_refspec); |
6b62816c | 462 | ret->push = parse_ref_spec(ret->push_refspec_nr, ret->push_refspec); |
5751f490 DB |
463 | return ret; |
464 | } | |
6b62816c | 465 | |
b42f6927 JS |
466 | int for_each_remote(each_remote_fn fn, void *priv) |
467 | { | |
468 | int i, result = 0; | |
469 | read_config(); | |
2d31347b | 470 | for (i = 0; i < remotes_nr && !result; i++) { |
b42f6927 JS |
471 | struct remote *r = remotes[i]; |
472 | if (!r) | |
473 | continue; | |
474 | if (!r->fetch) | |
475 | r->fetch = parse_ref_spec(r->fetch_refspec_nr, | |
476 | r->fetch_refspec); | |
477 | if (!r->push) | |
478 | r->push = parse_ref_spec(r->push_refspec_nr, | |
479 | r->push_refspec); | |
480 | result = fn(r, priv); | |
481 | } | |
482 | return result; | |
483 | } | |
484 | ||
2467a4fa DB |
485 | void ref_remove_duplicates(struct ref *ref_map) |
486 | { | |
487 | struct ref **posn; | |
488 | struct ref *next; | |
489 | for (; ref_map; ref_map = ref_map->next) { | |
490 | if (!ref_map->peer_ref) | |
491 | continue; | |
492 | posn = &ref_map->next; | |
493 | while (*posn) { | |
494 | if ((*posn)->peer_ref && | |
495 | !strcmp((*posn)->peer_ref->name, | |
496 | ref_map->peer_ref->name)) { | |
497 | if (strcmp((*posn)->name, ref_map->name)) | |
498 | die("%s tracks both %s and %s", | |
499 | ref_map->peer_ref->name, | |
500 | (*posn)->name, ref_map->name); | |
501 | next = (*posn)->next; | |
502 | free((*posn)->peer_ref); | |
503 | free(*posn); | |
504 | *posn = next; | |
505 | } else { | |
506 | posn = &(*posn)->next; | |
507 | } | |
508 | } | |
509 | } | |
510 | } | |
511 | ||
28b91f8a | 512 | int remote_has_url(struct remote *remote, const char *url) |
5d46c9d4 DB |
513 | { |
514 | int i; | |
28b91f8a SP |
515 | for (i = 0; i < remote->url_nr; i++) { |
516 | if (!strcmp(remote->url[i], url)) | |
5d46c9d4 DB |
517 | return 1; |
518 | } | |
519 | return 0; | |
520 | } | |
521 | ||
522 | int remote_find_tracking(struct remote *remote, struct refspec *refspec) | |
523 | { | |
b42f6927 JS |
524 | int find_src = refspec->src == NULL; |
525 | char *needle, **result; | |
5d46c9d4 | 526 | int i; |
b42f6927 JS |
527 | |
528 | if (find_src) { | |
009c5bcd | 529 | if (!refspec->dst) |
b42f6927 JS |
530 | return error("find_tracking: need either src or dst"); |
531 | needle = refspec->dst; | |
532 | result = &refspec->src; | |
533 | } else { | |
534 | needle = refspec->src; | |
535 | result = &refspec->dst; | |
536 | } | |
537 | ||
5d46c9d4 DB |
538 | for (i = 0; i < remote->fetch_refspec_nr; i++) { |
539 | struct refspec *fetch = &remote->fetch[i]; | |
b42f6927 JS |
540 | const char *key = find_src ? fetch->dst : fetch->src; |
541 | const char *value = find_src ? fetch->src : fetch->dst; | |
5d46c9d4 DB |
542 | if (!fetch->dst) |
543 | continue; | |
544 | if (fetch->pattern) { | |
b42f6927 JS |
545 | if (!prefixcmp(needle, key)) { |
546 | *result = xmalloc(strlen(value) + | |
547 | strlen(needle) - | |
548 | strlen(key) + 1); | |
549 | strcpy(*result, value); | |
550 | strcpy(*result + strlen(value), | |
551 | needle + strlen(key)); | |
5d46c9d4 DB |
552 | refspec->force = fetch->force; |
553 | return 0; | |
554 | } | |
b42f6927 JS |
555 | } else if (!strcmp(needle, key)) { |
556 | *result = xstrdup(value); | |
557 | refspec->force = fetch->force; | |
558 | return 0; | |
5d46c9d4 DB |
559 | } |
560 | } | |
5d46c9d4 DB |
561 | return -1; |
562 | } | |
563 | ||
dfd255dd DB |
564 | struct ref *alloc_ref(unsigned namelen) |
565 | { | |
566 | struct ref *ret = xmalloc(sizeof(struct ref) + namelen); | |
567 | memset(ret, 0, sizeof(struct ref) + namelen); | |
568 | return ret; | |
569 | } | |
570 | ||
4577370e | 571 | static struct ref *copy_ref(const struct ref *ref) |
d71ab174 DB |
572 | { |
573 | struct ref *ret = xmalloc(sizeof(struct ref) + strlen(ref->name) + 1); | |
574 | memcpy(ret, ref, sizeof(struct ref) + strlen(ref->name) + 1); | |
575 | ret->next = NULL; | |
576 | return ret; | |
577 | } | |
578 | ||
4577370e DB |
579 | struct ref *copy_ref_list(const struct ref *ref) |
580 | { | |
581 | struct ref *ret = NULL; | |
582 | struct ref **tail = &ret; | |
583 | while (ref) { | |
584 | *tail = copy_ref(ref); | |
585 | ref = ref->next; | |
586 | tail = &((*tail)->next); | |
587 | } | |
588 | return ret; | |
589 | } | |
590 | ||
dfd255dd DB |
591 | void free_refs(struct ref *ref) |
592 | { | |
593 | struct ref *next; | |
594 | while (ref) { | |
595 | next = ref->next; | |
8e0f7003 | 596 | free(ref->peer_ref); |
dfd255dd DB |
597 | free(ref); |
598 | ref = next; | |
599 | } | |
600 | } | |
601 | ||
6b62816c DB |
602 | static int count_refspec_match(const char *pattern, |
603 | struct ref *refs, | |
604 | struct ref **matched_ref) | |
605 | { | |
606 | int patlen = strlen(pattern); | |
607 | struct ref *matched_weak = NULL; | |
608 | struct ref *matched = NULL; | |
609 | int weak_match = 0; | |
610 | int match = 0; | |
611 | ||
612 | for (weak_match = match = 0; refs; refs = refs->next) { | |
613 | char *name = refs->name; | |
614 | int namelen = strlen(name); | |
6b62816c | 615 | |
ae36bdcf | 616 | if (!refname_match(pattern, name, ref_rev_parse_rules)) |
6b62816c DB |
617 | continue; |
618 | ||
619 | /* A match is "weak" if it is with refs outside | |
620 | * heads or tags, and did not specify the pattern | |
621 | * in full (e.g. "refs/remotes/origin/master") or at | |
622 | * least from the toplevel (e.g. "remotes/origin/master"); | |
623 | * otherwise "git push $URL master" would result in | |
624 | * ambiguity between remotes/origin/master and heads/master | |
625 | * at the remote site. | |
626 | */ | |
627 | if (namelen != patlen && | |
628 | patlen != namelen - 5 && | |
629 | prefixcmp(name, "refs/heads/") && | |
630 | prefixcmp(name, "refs/tags/")) { | |
631 | /* We want to catch the case where only weak | |
632 | * matches are found and there are multiple | |
633 | * matches, and where more than one strong | |
634 | * matches are found, as ambiguous. One | |
635 | * strong match with zero or more weak matches | |
636 | * are acceptable as a unique match. | |
637 | */ | |
638 | matched_weak = refs; | |
639 | weak_match++; | |
640 | } | |
641 | else { | |
642 | matched = refs; | |
643 | match++; | |
644 | } | |
645 | } | |
646 | if (!matched) { | |
647 | *matched_ref = matched_weak; | |
648 | return weak_match; | |
649 | } | |
650 | else { | |
651 | *matched_ref = matched; | |
652 | return match; | |
653 | } | |
654 | } | |
655 | ||
1d735267 | 656 | static void tail_link_ref(struct ref *ref, struct ref ***tail) |
6b62816c DB |
657 | { |
658 | **tail = ref; | |
1d735267 DB |
659 | while (ref->next) |
660 | ref = ref->next; | |
6b62816c | 661 | *tail = &ref->next; |
6b62816c DB |
662 | } |
663 | ||
664 | static struct ref *try_explicit_object_name(const char *name) | |
665 | { | |
666 | unsigned char sha1[20]; | |
667 | struct ref *ref; | |
668 | int len; | |
669 | ||
670 | if (!*name) { | |
dfd255dd | 671 | ref = alloc_ref(20); |
6b62816c DB |
672 | strcpy(ref->name, "(delete)"); |
673 | hashclr(ref->new_sha1); | |
674 | return ref; | |
675 | } | |
676 | if (get_sha1(name, sha1)) | |
677 | return NULL; | |
678 | len = strlen(name) + 1; | |
dfd255dd | 679 | ref = alloc_ref(len); |
6b62816c DB |
680 | memcpy(ref->name, name, len); |
681 | hashcpy(ref->new_sha1, sha1); | |
682 | return ref; | |
683 | } | |
684 | ||
1d735267 | 685 | static struct ref *make_linked_ref(const char *name, struct ref ***tail) |
6b62816c | 686 | { |
1d735267 | 687 | struct ref *ret; |
163f0ee5 | 688 | size_t len; |
6b62816c | 689 | |
163f0ee5 | 690 | len = strlen(name) + 1; |
1d735267 DB |
691 | ret = alloc_ref(len); |
692 | memcpy(ret->name, name, len); | |
693 | tail_link_ref(ret, tail); | |
694 | return ret; | |
163f0ee5 | 695 | } |
8558fd9e | 696 | |
54a8ad92 JH |
697 | static int match_explicit(struct ref *src, struct ref *dst, |
698 | struct ref ***dst_tail, | |
699 | struct refspec *rs, | |
700 | int errs) | |
6b62816c | 701 | { |
54a8ad92 | 702 | struct ref *matched_src, *matched_dst; |
8558fd9e | 703 | |
54a8ad92 | 704 | const char *dst_value = rs->dst; |
6b62816c | 705 | |
54a8ad92 JH |
706 | if (rs->pattern) |
707 | return errs; | |
8558fd9e | 708 | |
54a8ad92 JH |
709 | matched_src = matched_dst = NULL; |
710 | switch (count_refspec_match(rs->src, src, &matched_src)) { | |
711 | case 1: | |
712 | break; | |
713 | case 0: | |
714 | /* The source could be in the get_sha1() format | |
715 | * not a reference name. :refs/other is a | |
716 | * way to delete 'other' ref at the remote end. | |
717 | */ | |
718 | matched_src = try_explicit_object_name(rs->src); | |
7dfee372 SP |
719 | if (!matched_src) |
720 | error("src refspec %s does not match any.", rs->src); | |
54a8ad92 JH |
721 | break; |
722 | default: | |
3c8b7df1 | 723 | matched_src = NULL; |
7dfee372 | 724 | error("src refspec %s matches more than one.", rs->src); |
54a8ad92 JH |
725 | break; |
726 | } | |
3c8b7df1 JH |
727 | |
728 | if (!matched_src) | |
729 | errs = 1; | |
730 | ||
4491e62a | 731 | if (!dst_value) { |
9f0ea7e8 DB |
732 | unsigned char sha1[20]; |
733 | int flag; | |
734 | ||
4491e62a SP |
735 | if (!matched_src) |
736 | return errs; | |
9f0ea7e8 DB |
737 | dst_value = resolve_ref(matched_src->name, sha1, 1, &flag); |
738 | if (!dst_value || | |
739 | ((flag & REF_ISSYMREF) && | |
740 | prefixcmp(dst_value, "refs/heads/"))) | |
741 | die("%s cannot be resolved to branch.", | |
742 | matched_src->name); | |
4491e62a | 743 | } |
3c8b7df1 | 744 | |
54a8ad92 JH |
745 | switch (count_refspec_match(dst_value, dst, &matched_dst)) { |
746 | case 1: | |
747 | break; | |
748 | case 0: | |
163f0ee5 | 749 | if (!memcmp(dst_value, "refs/", 5)) |
1d735267 | 750 | matched_dst = make_linked_ref(dst_value, dst_tail); |
3c8b7df1 | 751 | else |
54a8ad92 JH |
752 | error("dst refspec %s does not match any " |
753 | "existing ref on the remote and does " | |
754 | "not start with refs/.", dst_value); | |
54a8ad92 JH |
755 | break; |
756 | default: | |
3c8b7df1 | 757 | matched_dst = NULL; |
54a8ad92 JH |
758 | error("dst refspec %s matches more than one.", |
759 | dst_value); | |
760 | break; | |
761 | } | |
009c5bcd | 762 | if (errs || !matched_dst) |
3c8b7df1 | 763 | return 1; |
54a8ad92 JH |
764 | if (matched_dst->peer_ref) { |
765 | errs = 1; | |
766 | error("dst ref %s receives from more than one src.", | |
767 | matched_dst->name); | |
6b62816c | 768 | } |
54a8ad92 JH |
769 | else { |
770 | matched_dst->peer_ref = matched_src; | |
771 | matched_dst->force = rs->force; | |
6b62816c | 772 | } |
54a8ad92 JH |
773 | return errs; |
774 | } | |
775 | ||
776 | static int match_explicit_refs(struct ref *src, struct ref *dst, | |
777 | struct ref ***dst_tail, struct refspec *rs, | |
778 | int rs_nr) | |
779 | { | |
780 | int i, errs; | |
781 | for (i = errs = 0; i < rs_nr; i++) | |
782 | errs |= match_explicit(src, dst, dst_tail, &rs[i], errs); | |
6b62816c DB |
783 | return -errs; |
784 | } | |
785 | ||
6e66bf3c AR |
786 | static const struct refspec *check_pattern_match(const struct refspec *rs, |
787 | int rs_nr, | |
788 | const struct ref *src) | |
8558fd9e DB |
789 | { |
790 | int i; | |
8558fd9e DB |
791 | for (i = 0; i < rs_nr; i++) { |
792 | if (rs[i].pattern && !prefixcmp(src->name, rs[i].src)) | |
6e66bf3c | 793 | return rs + i; |
8558fd9e | 794 | } |
6e66bf3c | 795 | return NULL; |
8558fd9e DB |
796 | } |
797 | ||
54a8ad92 JH |
798 | /* |
799 | * Note. This is used only by "push"; refspec matching rules for | |
800 | * push and fetch are subtly different, so do not try to reuse it | |
801 | * without thinking. | |
802 | */ | |
6b62816c | 803 | int match_refs(struct ref *src, struct ref *dst, struct ref ***dst_tail, |
28b9d6e5 | 804 | int nr_refspec, const char **refspec, int flags) |
6b62816c DB |
805 | { |
806 | struct refspec *rs = | |
807 | parse_ref_spec(nr_refspec, (const char **) refspec); | |
28b9d6e5 AW |
808 | int send_all = flags & MATCH_REFS_ALL; |
809 | int send_mirror = flags & MATCH_REFS_MIRROR; | |
6b62816c | 810 | |
8558fd9e DB |
811 | if (match_explicit_refs(src, dst, dst_tail, rs, nr_refspec)) |
812 | return -1; | |
6b62816c DB |
813 | |
814 | /* pick the remainder */ | |
815 | for ( ; src; src = src->next) { | |
816 | struct ref *dst_peer; | |
6e66bf3c AR |
817 | const struct refspec *pat = NULL; |
818 | char *dst_name; | |
6b62816c DB |
819 | if (src->peer_ref) |
820 | continue; | |
6e66bf3c AR |
821 | if (nr_refspec) { |
822 | pat = check_pattern_match(rs, nr_refspec, src); | |
823 | if (!pat) | |
824 | continue; | |
825 | } | |
28b9d6e5 | 826 | else if (!send_mirror && prefixcmp(src->name, "refs/heads/")) |
098e711e JH |
827 | /* |
828 | * "matching refs"; traditionally we pushed everything | |
829 | * including refs outside refs/heads/ hierarchy, but | |
830 | * that does not make much sense these days. | |
831 | */ | |
832 | continue; | |
8558fd9e | 833 | |
6e66bf3c | 834 | if (pat) { |
efd8f793 DB |
835 | const char *dst_side = pat->dst ? pat->dst : pat->src; |
836 | dst_name = xmalloc(strlen(dst_side) + | |
6e66bf3c AR |
837 | strlen(src->name) - |
838 | strlen(pat->src) + 2); | |
efd8f793 | 839 | strcpy(dst_name, dst_side); |
6e66bf3c AR |
840 | strcat(dst_name, src->name + strlen(pat->src)); |
841 | } else | |
aa32eedc | 842 | dst_name = xstrdup(src->name); |
6e66bf3c | 843 | dst_peer = find_ref_by_name(dst, dst_name); |
8558fd9e DB |
844 | if (dst_peer && dst_peer->peer_ref) |
845 | /* We're already sending something to this ref. */ | |
6e66bf3c | 846 | goto free_name; |
28b9d6e5 AW |
847 | |
848 | if (!dst_peer && !nr_refspec && !(send_all || send_mirror)) | |
849 | /* | |
850 | * Remote doesn't have it, and we have no | |
8558fd9e | 851 | * explicit pattern, and we don't have |
28b9d6e5 AW |
852 | * --all nor --mirror. |
853 | */ | |
6e66bf3c | 854 | goto free_name; |
6b62816c DB |
855 | if (!dst_peer) { |
856 | /* Create a new one and link it */ | |
1d735267 | 857 | dst_peer = make_linked_ref(dst_name, dst_tail); |
6b62816c | 858 | hashcpy(dst_peer->new_sha1, src->new_sha1); |
6b62816c DB |
859 | } |
860 | dst_peer->peer_ref = src; | |
5eb73581 JK |
861 | if (pat) |
862 | dst_peer->force = pat->force; | |
6e66bf3c AR |
863 | free_name: |
864 | free(dst_name); | |
6b62816c DB |
865 | } |
866 | return 0; | |
867 | } | |
cf818348 DB |
868 | |
869 | struct branch *branch_get(const char *name) | |
870 | { | |
871 | struct branch *ret; | |
872 | ||
873 | read_config(); | |
874 | if (!name || !*name || !strcmp(name, "HEAD")) | |
875 | ret = current_branch; | |
876 | else | |
877 | ret = make_branch(name, 0); | |
878 | if (ret && ret->remote_name) { | |
879 | ret->remote = remote_get(ret->remote_name); | |
880 | if (ret->merge_nr) { | |
881 | int i; | |
882 | ret->merge = xcalloc(sizeof(*ret->merge), | |
883 | ret->merge_nr); | |
884 | for (i = 0; i < ret->merge_nr; i++) { | |
885 | ret->merge[i] = xcalloc(1, sizeof(**ret->merge)); | |
886 | ret->merge[i]->src = xstrdup(ret->merge_name[i]); | |
887 | remote_find_tracking(ret->remote, | |
888 | ret->merge[i]); | |
889 | } | |
890 | } | |
891 | } | |
892 | return ret; | |
893 | } | |
894 | ||
895 | int branch_has_merge_config(struct branch *branch) | |
896 | { | |
897 | return branch && !!branch->merge; | |
898 | } | |
899 | ||
85682c19 SP |
900 | int branch_merge_matches(struct branch *branch, |
901 | int i, | |
902 | const char *refname) | |
cf818348 | 903 | { |
85682c19 | 904 | if (!branch || i < 0 || i >= branch->merge_nr) |
cf818348 | 905 | return 0; |
605b4978 | 906 | return refname_match(branch->merge[i]->src, refname, ref_fetch_rules); |
cf818348 | 907 | } |
d71ab174 | 908 | |
4577370e | 909 | static struct ref *get_expanded_map(const struct ref *remote_refs, |
d71ab174 DB |
910 | const struct refspec *refspec) |
911 | { | |
4577370e | 912 | const struct ref *ref; |
d71ab174 DB |
913 | struct ref *ret = NULL; |
914 | struct ref **tail = &ret; | |
915 | ||
916 | int remote_prefix_len = strlen(refspec->src); | |
917 | int local_prefix_len = strlen(refspec->dst); | |
918 | ||
919 | for (ref = remote_refs; ref; ref = ref->next) { | |
920 | if (strchr(ref->name, '^')) | |
921 | continue; /* a dereference item */ | |
922 | if (!prefixcmp(ref->name, refspec->src)) { | |
4577370e | 923 | const char *match; |
d71ab174 DB |
924 | struct ref *cpy = copy_ref(ref); |
925 | match = ref->name + remote_prefix_len; | |
926 | ||
927 | cpy->peer_ref = alloc_ref(local_prefix_len + | |
928 | strlen(match) + 1); | |
929 | sprintf(cpy->peer_ref->name, "%s%s", | |
930 | refspec->dst, match); | |
931 | if (refspec->force) | |
932 | cpy->peer_ref->force = 1; | |
933 | *tail = cpy; | |
934 | tail = &cpy->next; | |
935 | } | |
936 | } | |
937 | ||
938 | return ret; | |
939 | } | |
940 | ||
4577370e | 941 | static const struct ref *find_ref_by_name_abbrev(const struct ref *refs, const char *name) |
d71ab174 | 942 | { |
4577370e | 943 | const struct ref *ref; |
d71ab174 | 944 | for (ref = refs; ref; ref = ref->next) { |
605b4978 | 945 | if (refname_match(name, ref->name, ref_fetch_rules)) |
d71ab174 DB |
946 | return ref; |
947 | } | |
948 | return NULL; | |
949 | } | |
950 | ||
4577370e | 951 | struct ref *get_remote_ref(const struct ref *remote_refs, const char *name) |
d71ab174 | 952 | { |
4577370e | 953 | const struct ref *ref = find_ref_by_name_abbrev(remote_refs, name); |
d71ab174 DB |
954 | |
955 | if (!ref) | |
9ad7c5ae | 956 | return NULL; |
d71ab174 DB |
957 | |
958 | return copy_ref(ref); | |
959 | } | |
960 | ||
961 | static struct ref *get_local_ref(const char *name) | |
962 | { | |
963 | struct ref *ret; | |
964 | if (!name) | |
965 | return NULL; | |
966 | ||
967 | if (!prefixcmp(name, "refs/")) { | |
968 | ret = alloc_ref(strlen(name) + 1); | |
969 | strcpy(ret->name, name); | |
970 | return ret; | |
971 | } | |
972 | ||
973 | if (!prefixcmp(name, "heads/") || | |
974 | !prefixcmp(name, "tags/") || | |
975 | !prefixcmp(name, "remotes/")) { | |
976 | ret = alloc_ref(strlen(name) + 6); | |
977 | sprintf(ret->name, "refs/%s", name); | |
978 | return ret; | |
979 | } | |
980 | ||
981 | ret = alloc_ref(strlen(name) + 12); | |
982 | sprintf(ret->name, "refs/heads/%s", name); | |
983 | return ret; | |
984 | } | |
985 | ||
4577370e | 986 | int get_fetch_map(const struct ref *remote_refs, |
d71ab174 | 987 | const struct refspec *refspec, |
9ad7c5ae JH |
988 | struct ref ***tail, |
989 | int missing_ok) | |
d71ab174 DB |
990 | { |
991 | struct ref *ref_map, *rm; | |
992 | ||
993 | if (refspec->pattern) { | |
994 | ref_map = get_expanded_map(remote_refs, refspec); | |
995 | } else { | |
9ad7c5ae JH |
996 | const char *name = refspec->src[0] ? refspec->src : "HEAD"; |
997 | ||
998 | ref_map = get_remote_ref(remote_refs, name); | |
999 | if (!missing_ok && !ref_map) | |
1000 | die("Couldn't find remote ref %s", name); | |
1001 | if (ref_map) { | |
1002 | ref_map->peer_ref = get_local_ref(refspec->dst); | |
1003 | if (ref_map->peer_ref && refspec->force) | |
1004 | ref_map->peer_ref->force = 1; | |
1005 | } | |
d71ab174 DB |
1006 | } |
1007 | ||
1008 | for (rm = ref_map; rm; rm = rm->next) { | |
1009 | if (rm->peer_ref && check_ref_format(rm->peer_ref->name + 5)) | |
1010 | die("* refusing to create funny ref '%s' locally", | |
1011 | rm->peer_ref->name); | |
1012 | } | |
1013 | ||
8f70a765 AR |
1014 | if (ref_map) |
1015 | tail_link_ref(ref_map, tail); | |
d71ab174 DB |
1016 | |
1017 | return 0; | |
1018 | } |