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1 | #include "cache.h" | |
2 | #include "dir.h" | |
3 | #include "repository.h" | |
4 | #include "config.h" | |
5 | #include "submodule-config.h" | |
6 | #include "submodule.h" | |
7 | #include "strbuf.h" | |
8 | #include "object-store.h" | |
9 | #include "parse-options.h" | |
10 | #include "tree-walk.h" | |
11 | ||
12 | /* | |
13 | * submodule cache lookup structure | |
14 | * There is one shared set of 'struct submodule' entries which can be | |
15 | * looked up by their sha1 blob id of the .gitmodules file and either | |
16 | * using path or name as key. | |
17 | * for_path stores submodule entries with path as key | |
18 | * for_name stores submodule entries with name as key | |
19 | */ | |
20 | struct submodule_cache { | |
21 | struct hashmap for_path; | |
22 | struct hashmap for_name; | |
23 | unsigned initialized:1; | |
24 | unsigned gitmodules_read:1; | |
25 | }; | |
26 | ||
27 | /* | |
28 | * thin wrapper struct needed to insert 'struct submodule' entries to | |
29 | * the hashmap | |
30 | */ | |
31 | struct submodule_entry { | |
32 | struct hashmap_entry ent; | |
33 | struct submodule *config; | |
34 | }; | |
35 | ||
36 | enum lookup_type { | |
37 | lookup_name, | |
38 | lookup_path | |
39 | }; | |
40 | ||
41 | static int config_path_cmp(const void *cmp_data UNUSED, | |
42 | const struct hashmap_entry *eptr, | |
43 | const struct hashmap_entry *entry_or_key, | |
44 | const void *keydata UNUSED) | |
45 | { | |
46 | const struct submodule_entry *a, *b; | |
47 | ||
48 | a = container_of(eptr, const struct submodule_entry, ent); | |
49 | b = container_of(entry_or_key, const struct submodule_entry, ent); | |
50 | ||
51 | return strcmp(a->config->path, b->config->path) || | |
52 | !oideq(&a->config->gitmodules_oid, &b->config->gitmodules_oid); | |
53 | } | |
54 | ||
55 | static int config_name_cmp(const void *cmp_data UNUSED, | |
56 | const struct hashmap_entry *eptr, | |
57 | const struct hashmap_entry *entry_or_key, | |
58 | const void *keydata UNUSED) | |
59 | { | |
60 | const struct submodule_entry *a, *b; | |
61 | ||
62 | a = container_of(eptr, const struct submodule_entry, ent); | |
63 | b = container_of(entry_or_key, const struct submodule_entry, ent); | |
64 | ||
65 | return strcmp(a->config->name, b->config->name) || | |
66 | !oideq(&a->config->gitmodules_oid, &b->config->gitmodules_oid); | |
67 | } | |
68 | ||
69 | static struct submodule_cache *submodule_cache_alloc(void) | |
70 | { | |
71 | return xcalloc(1, sizeof(struct submodule_cache)); | |
72 | } | |
73 | ||
74 | static void submodule_cache_init(struct submodule_cache *cache) | |
75 | { | |
76 | hashmap_init(&cache->for_path, config_path_cmp, NULL, 0); | |
77 | hashmap_init(&cache->for_name, config_name_cmp, NULL, 0); | |
78 | cache->initialized = 1; | |
79 | } | |
80 | ||
81 | static void free_one_config(struct submodule_entry *entry) | |
82 | { | |
83 | free((void *) entry->config->path); | |
84 | free((void *) entry->config->name); | |
85 | free((void *) entry->config->branch); | |
86 | free((void *) entry->config->update_strategy.command); | |
87 | free(entry->config); | |
88 | } | |
89 | ||
90 | static void submodule_cache_clear(struct submodule_cache *cache) | |
91 | { | |
92 | struct hashmap_iter iter; | |
93 | struct submodule_entry *entry; | |
94 | ||
95 | if (!cache->initialized) | |
96 | return; | |
97 | ||
98 | /* | |
99 | * We iterate over the name hash here to be symmetric with the | |
100 | * allocation of struct submodule entries. Each is allocated by | |
101 | * their .gitmodules blob sha1 and submodule name. | |
102 | */ | |
103 | hashmap_for_each_entry(&cache->for_name, &iter, entry, | |
104 | ent /* member name */) | |
105 | free_one_config(entry); | |
106 | ||
107 | hashmap_clear_and_free(&cache->for_path, struct submodule_entry, ent); | |
108 | hashmap_clear_and_free(&cache->for_name, struct submodule_entry, ent); | |
109 | cache->initialized = 0; | |
110 | cache->gitmodules_read = 0; | |
111 | } | |
112 | ||
113 | void submodule_cache_free(struct submodule_cache *cache) | |
114 | { | |
115 | submodule_cache_clear(cache); | |
116 | free(cache); | |
117 | } | |
118 | ||
119 | static unsigned int hash_oid_string(const struct object_id *oid, | |
120 | const char *string) | |
121 | { | |
122 | return memhash(oid->hash, the_hash_algo->rawsz) + strhash(string); | |
123 | } | |
124 | ||
125 | static void cache_put_path(struct submodule_cache *cache, | |
126 | struct submodule *submodule) | |
127 | { | |
128 | unsigned int hash = hash_oid_string(&submodule->gitmodules_oid, | |
129 | submodule->path); | |
130 | struct submodule_entry *e = xmalloc(sizeof(*e)); | |
131 | hashmap_entry_init(&e->ent, hash); | |
132 | e->config = submodule; | |
133 | hashmap_put(&cache->for_path, &e->ent); | |
134 | } | |
135 | ||
136 | static void cache_remove_path(struct submodule_cache *cache, | |
137 | struct submodule *submodule) | |
138 | { | |
139 | unsigned int hash = hash_oid_string(&submodule->gitmodules_oid, | |
140 | submodule->path); | |
141 | struct submodule_entry e; | |
142 | struct submodule_entry *removed; | |
143 | hashmap_entry_init(&e.ent, hash); | |
144 | e.config = submodule; | |
145 | removed = hashmap_remove_entry(&cache->for_path, &e, ent, NULL); | |
146 | free(removed); | |
147 | } | |
148 | ||
149 | static void cache_add(struct submodule_cache *cache, | |
150 | struct submodule *submodule) | |
151 | { | |
152 | unsigned int hash = hash_oid_string(&submodule->gitmodules_oid, | |
153 | submodule->name); | |
154 | struct submodule_entry *e = xmalloc(sizeof(*e)); | |
155 | hashmap_entry_init(&e->ent, hash); | |
156 | e->config = submodule; | |
157 | hashmap_add(&cache->for_name, &e->ent); | |
158 | } | |
159 | ||
160 | static const struct submodule *cache_lookup_path(struct submodule_cache *cache, | |
161 | const struct object_id *gitmodules_oid, const char *path) | |
162 | { | |
163 | struct submodule_entry *entry; | |
164 | unsigned int hash = hash_oid_string(gitmodules_oid, path); | |
165 | struct submodule_entry key; | |
166 | struct submodule key_config; | |
167 | ||
168 | oidcpy(&key_config.gitmodules_oid, gitmodules_oid); | |
169 | key_config.path = path; | |
170 | ||
171 | hashmap_entry_init(&key.ent, hash); | |
172 | key.config = &key_config; | |
173 | ||
174 | entry = hashmap_get_entry(&cache->for_path, &key, ent, NULL); | |
175 | if (entry) | |
176 | return entry->config; | |
177 | return NULL; | |
178 | } | |
179 | ||
180 | static struct submodule *cache_lookup_name(struct submodule_cache *cache, | |
181 | const struct object_id *gitmodules_oid, const char *name) | |
182 | { | |
183 | struct submodule_entry *entry; | |
184 | unsigned int hash = hash_oid_string(gitmodules_oid, name); | |
185 | struct submodule_entry key; | |
186 | struct submodule key_config; | |
187 | ||
188 | oidcpy(&key_config.gitmodules_oid, gitmodules_oid); | |
189 | key_config.name = name; | |
190 | ||
191 | hashmap_entry_init(&key.ent, hash); | |
192 | key.config = &key_config; | |
193 | ||
194 | entry = hashmap_get_entry(&cache->for_name, &key, ent, NULL); | |
195 | if (entry) | |
196 | return entry->config; | |
197 | return NULL; | |
198 | } | |
199 | ||
200 | int check_submodule_name(const char *name) | |
201 | { | |
202 | /* Disallow empty names */ | |
203 | if (!*name) | |
204 | return -1; | |
205 | ||
206 | /* | |
207 | * Look for '..' as a path component. Check is_xplatform_dir_sep() as | |
208 | * separators rather than is_dir_sep(), because we want the name rules | |
209 | * to be consistent across platforms. | |
210 | */ | |
211 | goto in_component; /* always start inside component */ | |
212 | while (*name) { | |
213 | char c = *name++; | |
214 | if (is_xplatform_dir_sep(c)) { | |
215 | in_component: | |
216 | if (name[0] == '.' && name[1] == '.' && | |
217 | (!name[2] || is_xplatform_dir_sep(name[2]))) | |
218 | return -1; | |
219 | } | |
220 | } | |
221 | ||
222 | return 0; | |
223 | } | |
224 | ||
225 | static int name_and_item_from_var(const char *var, struct strbuf *name, | |
226 | struct strbuf *item) | |
227 | { | |
228 | const char *subsection, *key; | |
229 | size_t subsection_len; | |
230 | int parse; | |
231 | parse = parse_config_key(var, "submodule", &subsection, | |
232 | &subsection_len, &key); | |
233 | if (parse < 0 || !subsection) | |
234 | return 0; | |
235 | ||
236 | strbuf_add(name, subsection, subsection_len); | |
237 | if (check_submodule_name(name->buf) < 0) { | |
238 | warning(_("ignoring suspicious submodule name: %s"), name->buf); | |
239 | strbuf_release(name); | |
240 | return 0; | |
241 | } | |
242 | ||
243 | strbuf_addstr(item, key); | |
244 | ||
245 | return 1; | |
246 | } | |
247 | ||
248 | static struct submodule *lookup_or_create_by_name(struct submodule_cache *cache, | |
249 | const struct object_id *gitmodules_oid, const char *name) | |
250 | { | |
251 | struct submodule *submodule; | |
252 | struct strbuf name_buf = STRBUF_INIT; | |
253 | ||
254 | submodule = cache_lookup_name(cache, gitmodules_oid, name); | |
255 | if (submodule) | |
256 | return submodule; | |
257 | ||
258 | submodule = xmalloc(sizeof(*submodule)); | |
259 | ||
260 | strbuf_addstr(&name_buf, name); | |
261 | submodule->name = strbuf_detach(&name_buf, NULL); | |
262 | ||
263 | submodule->path = NULL; | |
264 | submodule->url = NULL; | |
265 | submodule->update_strategy.type = SM_UPDATE_UNSPECIFIED; | |
266 | submodule->update_strategy.command = NULL; | |
267 | submodule->fetch_recurse = RECURSE_SUBMODULES_NONE; | |
268 | submodule->ignore = NULL; | |
269 | submodule->branch = NULL; | |
270 | submodule->recommend_shallow = -1; | |
271 | ||
272 | oidcpy(&submodule->gitmodules_oid, gitmodules_oid); | |
273 | ||
274 | cache_add(cache, submodule); | |
275 | ||
276 | return submodule; | |
277 | } | |
278 | ||
279 | static int parse_fetch_recurse(const char *opt, const char *arg, | |
280 | int die_on_error) | |
281 | { | |
282 | switch (git_parse_maybe_bool(arg)) { | |
283 | case 1: | |
284 | return RECURSE_SUBMODULES_ON; | |
285 | case 0: | |
286 | return RECURSE_SUBMODULES_OFF; | |
287 | default: | |
288 | if (!strcmp(arg, "on-demand")) | |
289 | return RECURSE_SUBMODULES_ON_DEMAND; | |
290 | /* | |
291 | * Please update $__git_fetch_recurse_submodules in | |
292 | * git-completion.bash when you add new options. | |
293 | */ | |
294 | if (die_on_error) | |
295 | die("bad %s argument: %s", opt, arg); | |
296 | else | |
297 | return RECURSE_SUBMODULES_ERROR; | |
298 | } | |
299 | } | |
300 | ||
301 | int parse_submodule_fetchjobs(const char *var, const char *value) | |
302 | { | |
303 | int fetchjobs = git_config_int(var, value); | |
304 | if (fetchjobs < 0) | |
305 | die(_("negative values not allowed for submodule.fetchJobs")); | |
306 | if (!fetchjobs) | |
307 | fetchjobs = online_cpus(); | |
308 | return fetchjobs; | |
309 | } | |
310 | ||
311 | int parse_fetch_recurse_submodules_arg(const char *opt, const char *arg) | |
312 | { | |
313 | return parse_fetch_recurse(opt, arg, 1); | |
314 | } | |
315 | ||
316 | int option_fetch_parse_recurse_submodules(const struct option *opt, | |
317 | const char *arg, int unset) | |
318 | { | |
319 | int *v; | |
320 | ||
321 | if (!opt->value) | |
322 | return -1; | |
323 | ||
324 | v = opt->value; | |
325 | ||
326 | if (unset) { | |
327 | *v = RECURSE_SUBMODULES_OFF; | |
328 | } else { | |
329 | if (arg) | |
330 | *v = parse_fetch_recurse_submodules_arg(opt->long_name, arg); | |
331 | else | |
332 | *v = RECURSE_SUBMODULES_ON; | |
333 | } | |
334 | return 0; | |
335 | } | |
336 | ||
337 | static int parse_update_recurse(const char *opt, const char *arg, | |
338 | int die_on_error) | |
339 | { | |
340 | switch (git_parse_maybe_bool(arg)) { | |
341 | case 1: | |
342 | return RECURSE_SUBMODULES_ON; | |
343 | case 0: | |
344 | return RECURSE_SUBMODULES_OFF; | |
345 | default: | |
346 | if (die_on_error) | |
347 | die("bad %s argument: %s", opt, arg); | |
348 | return RECURSE_SUBMODULES_ERROR; | |
349 | } | |
350 | } | |
351 | ||
352 | int parse_update_recurse_submodules_arg(const char *opt, const char *arg) | |
353 | { | |
354 | return parse_update_recurse(opt, arg, 1); | |
355 | } | |
356 | ||
357 | static int parse_push_recurse(const char *opt, const char *arg, | |
358 | int die_on_error) | |
359 | { | |
360 | switch (git_parse_maybe_bool(arg)) { | |
361 | case 1: | |
362 | /* There's no simple "on" value when pushing */ | |
363 | if (die_on_error) | |
364 | die("bad %s argument: %s", opt, arg); | |
365 | else | |
366 | return RECURSE_SUBMODULES_ERROR; | |
367 | case 0: | |
368 | return RECURSE_SUBMODULES_OFF; | |
369 | default: | |
370 | if (!strcmp(arg, "on-demand")) | |
371 | return RECURSE_SUBMODULES_ON_DEMAND; | |
372 | else if (!strcmp(arg, "check")) | |
373 | return RECURSE_SUBMODULES_CHECK; | |
374 | else if (!strcmp(arg, "only")) | |
375 | return RECURSE_SUBMODULES_ONLY; | |
376 | /* | |
377 | * Please update $__git_push_recurse_submodules in | |
378 | * git-completion.bash when you add new modes. | |
379 | */ | |
380 | else if (die_on_error) | |
381 | die("bad %s argument: %s", opt, arg); | |
382 | else | |
383 | return RECURSE_SUBMODULES_ERROR; | |
384 | } | |
385 | } | |
386 | ||
387 | int parse_push_recurse_submodules_arg(const char *opt, const char *arg) | |
388 | { | |
389 | return parse_push_recurse(opt, arg, 1); | |
390 | } | |
391 | ||
392 | static void warn_multiple_config(const struct object_id *treeish_name, | |
393 | const char *name, const char *option) | |
394 | { | |
395 | const char *commit_string = "WORKTREE"; | |
396 | if (treeish_name) | |
397 | commit_string = oid_to_hex(treeish_name); | |
398 | warning("%s:.gitmodules, multiple configurations found for " | |
399 | "'submodule.%s.%s'. Skipping second one!", | |
400 | commit_string, name, option); | |
401 | } | |
402 | ||
403 | static void warn_command_line_option(const char *var, const char *value) | |
404 | { | |
405 | warning(_("ignoring '%s' which may be interpreted as" | |
406 | " a command-line option: %s"), var, value); | |
407 | } | |
408 | ||
409 | struct parse_config_parameter { | |
410 | struct submodule_cache *cache; | |
411 | const struct object_id *treeish_name; | |
412 | const struct object_id *gitmodules_oid; | |
413 | int overwrite; | |
414 | }; | |
415 | ||
416 | /* | |
417 | * Parse a config item from .gitmodules. | |
418 | * | |
419 | * This does not handle submodule-related configuration from the main | |
420 | * config store (.git/config, etc). Callers are responsible for | |
421 | * checking for overrides in the main config store when appropriate. | |
422 | */ | |
423 | static int parse_config(const char *var, const char *value, void *data) | |
424 | { | |
425 | struct parse_config_parameter *me = data; | |
426 | struct submodule *submodule; | |
427 | struct strbuf name = STRBUF_INIT, item = STRBUF_INIT; | |
428 | int ret = 0; | |
429 | ||
430 | /* this also ensures that we only parse submodule entries */ | |
431 | if (!name_and_item_from_var(var, &name, &item)) | |
432 | return 0; | |
433 | ||
434 | submodule = lookup_or_create_by_name(me->cache, | |
435 | me->gitmodules_oid, | |
436 | name.buf); | |
437 | ||
438 | if (!strcmp(item.buf, "path")) { | |
439 | if (!value) | |
440 | ret = config_error_nonbool(var); | |
441 | else if (looks_like_command_line_option(value)) | |
442 | warn_command_line_option(var, value); | |
443 | else if (!me->overwrite && submodule->path) | |
444 | warn_multiple_config(me->treeish_name, submodule->name, | |
445 | "path"); | |
446 | else { | |
447 | if (submodule->path) | |
448 | cache_remove_path(me->cache, submodule); | |
449 | free((void *) submodule->path); | |
450 | submodule->path = xstrdup(value); | |
451 | cache_put_path(me->cache, submodule); | |
452 | } | |
453 | } else if (!strcmp(item.buf, "fetchrecursesubmodules")) { | |
454 | /* when parsing worktree configurations we can die early */ | |
455 | int die_on_error = is_null_oid(me->gitmodules_oid); | |
456 | if (!me->overwrite && | |
457 | submodule->fetch_recurse != RECURSE_SUBMODULES_NONE) | |
458 | warn_multiple_config(me->treeish_name, submodule->name, | |
459 | "fetchrecursesubmodules"); | |
460 | else | |
461 | submodule->fetch_recurse = parse_fetch_recurse( | |
462 | var, value, | |
463 | die_on_error); | |
464 | } else if (!strcmp(item.buf, "ignore")) { | |
465 | if (!value) | |
466 | ret = config_error_nonbool(var); | |
467 | else if (!me->overwrite && submodule->ignore) | |
468 | warn_multiple_config(me->treeish_name, submodule->name, | |
469 | "ignore"); | |
470 | else if (strcmp(value, "untracked") && | |
471 | strcmp(value, "dirty") && | |
472 | strcmp(value, "all") && | |
473 | strcmp(value, "none")) | |
474 | warning("Invalid parameter '%s' for config option " | |
475 | "'submodule.%s.ignore'", value, name.buf); | |
476 | else { | |
477 | free((void *) submodule->ignore); | |
478 | submodule->ignore = xstrdup(value); | |
479 | } | |
480 | } else if (!strcmp(item.buf, "url")) { | |
481 | if (!value) { | |
482 | ret = config_error_nonbool(var); | |
483 | } else if (looks_like_command_line_option(value)) { | |
484 | warn_command_line_option(var, value); | |
485 | } else if (!me->overwrite && submodule->url) { | |
486 | warn_multiple_config(me->treeish_name, submodule->name, | |
487 | "url"); | |
488 | } else { | |
489 | free((void *) submodule->url); | |
490 | submodule->url = xstrdup(value); | |
491 | } | |
492 | } else if (!strcmp(item.buf, "update")) { | |
493 | if (!value) | |
494 | ret = config_error_nonbool(var); | |
495 | else if (!me->overwrite && | |
496 | submodule->update_strategy.type != SM_UPDATE_UNSPECIFIED) | |
497 | warn_multiple_config(me->treeish_name, submodule->name, | |
498 | "update"); | |
499 | else if (parse_submodule_update_strategy(value, | |
500 | &submodule->update_strategy) < 0 || | |
501 | submodule->update_strategy.type == SM_UPDATE_COMMAND) | |
502 | die(_("invalid value for '%s'"), var); | |
503 | } else if (!strcmp(item.buf, "shallow")) { | |
504 | if (!me->overwrite && submodule->recommend_shallow != -1) | |
505 | warn_multiple_config(me->treeish_name, submodule->name, | |
506 | "shallow"); | |
507 | else | |
508 | submodule->recommend_shallow = | |
509 | git_config_bool(var, value); | |
510 | } else if (!strcmp(item.buf, "branch")) { | |
511 | if (!me->overwrite && submodule->branch) | |
512 | warn_multiple_config(me->treeish_name, submodule->name, | |
513 | "branch"); | |
514 | else { | |
515 | free((void *)submodule->branch); | |
516 | submodule->branch = xstrdup(value); | |
517 | } | |
518 | } | |
519 | ||
520 | strbuf_release(&name); | |
521 | strbuf_release(&item); | |
522 | ||
523 | return ret; | |
524 | } | |
525 | ||
526 | static int gitmodule_oid_from_commit(const struct object_id *treeish_name, | |
527 | struct object_id *gitmodules_oid, | |
528 | struct strbuf *rev) | |
529 | { | |
530 | int ret = 0; | |
531 | ||
532 | if (is_null_oid(treeish_name)) { | |
533 | oidclr(gitmodules_oid); | |
534 | return 1; | |
535 | } | |
536 | ||
537 | strbuf_addf(rev, "%s:.gitmodules", oid_to_hex(treeish_name)); | |
538 | if (repo_get_oid(the_repository, rev->buf, gitmodules_oid) >= 0) | |
539 | ret = 1; | |
540 | ||
541 | return ret; | |
542 | } | |
543 | ||
544 | /* This does a lookup of a submodule configuration by name or by path | |
545 | * (key) with on-demand reading of the appropriate .gitmodules from | |
546 | * revisions. | |
547 | */ | |
548 | static const struct submodule *config_from(struct submodule_cache *cache, | |
549 | const struct object_id *treeish_name, const char *key, | |
550 | enum lookup_type lookup_type) | |
551 | { | |
552 | struct strbuf rev = STRBUF_INIT; | |
553 | unsigned long config_size; | |
554 | char *config = NULL; | |
555 | struct object_id oid; | |
556 | enum object_type type; | |
557 | const struct submodule *submodule = NULL; | |
558 | struct parse_config_parameter parameter; | |
559 | ||
560 | /* | |
561 | * If any parameter except the cache is a NULL pointer just | |
562 | * return the first submodule. Can be used to check whether | |
563 | * there are any submodules parsed. | |
564 | */ | |
565 | if (!treeish_name || !key) { | |
566 | struct hashmap_iter iter; | |
567 | struct submodule_entry *entry; | |
568 | ||
569 | entry = hashmap_iter_first_entry(&cache->for_name, &iter, | |
570 | struct submodule_entry, | |
571 | ent /* member name */); | |
572 | if (!entry) | |
573 | return NULL; | |
574 | return entry->config; | |
575 | } | |
576 | ||
577 | if (!gitmodule_oid_from_commit(treeish_name, &oid, &rev)) | |
578 | goto out; | |
579 | ||
580 | switch (lookup_type) { | |
581 | case lookup_name: | |
582 | submodule = cache_lookup_name(cache, &oid, key); | |
583 | break; | |
584 | case lookup_path: | |
585 | submodule = cache_lookup_path(cache, &oid, key); | |
586 | break; | |
587 | } | |
588 | if (submodule) | |
589 | goto out; | |
590 | ||
591 | config = read_object_file(&oid, &type, &config_size); | |
592 | if (!config || type != OBJ_BLOB) | |
593 | goto out; | |
594 | ||
595 | /* fill the submodule config into the cache */ | |
596 | parameter.cache = cache; | |
597 | parameter.treeish_name = treeish_name; | |
598 | parameter.gitmodules_oid = &oid; | |
599 | parameter.overwrite = 0; | |
600 | git_config_from_mem(parse_config, CONFIG_ORIGIN_SUBMODULE_BLOB, rev.buf, | |
601 | config, config_size, ¶meter, NULL); | |
602 | strbuf_release(&rev); | |
603 | free(config); | |
604 | ||
605 | switch (lookup_type) { | |
606 | case lookup_name: | |
607 | return cache_lookup_name(cache, &oid, key); | |
608 | case lookup_path: | |
609 | return cache_lookup_path(cache, &oid, key); | |
610 | default: | |
611 | return NULL; | |
612 | } | |
613 | ||
614 | out: | |
615 | strbuf_release(&rev); | |
616 | free(config); | |
617 | return submodule; | |
618 | } | |
619 | ||
620 | static void submodule_cache_check_init(struct repository *repo) | |
621 | { | |
622 | if (repo->submodule_cache && repo->submodule_cache->initialized) | |
623 | return; | |
624 | ||
625 | if (!repo->submodule_cache) | |
626 | repo->submodule_cache = submodule_cache_alloc(); | |
627 | ||
628 | submodule_cache_init(repo->submodule_cache); | |
629 | } | |
630 | ||
631 | /* | |
632 | * Note: This function is private for a reason, the '.gitmodules' file should | |
633 | * not be used as a mechanism to retrieve arbitrary configuration stored in | |
634 | * the repository. | |
635 | * | |
636 | * Runs the provided config function on the '.gitmodules' file found in the | |
637 | * working directory. | |
638 | */ | |
639 | static void config_from_gitmodules(config_fn_t fn, struct repository *repo, void *data) | |
640 | { | |
641 | if (repo->worktree) { | |
642 | struct git_config_source config_source = { | |
643 | 0, .scope = CONFIG_SCOPE_SUBMODULE | |
644 | }; | |
645 | const struct config_options opts = { 0 }; | |
646 | struct object_id oid; | |
647 | char *file; | |
648 | char *oidstr = NULL; | |
649 | ||
650 | file = repo_worktree_path(repo, GITMODULES_FILE); | |
651 | if (file_exists(file)) { | |
652 | config_source.file = file; | |
653 | } else if (repo_get_oid(repo, GITMODULES_INDEX, &oid) >= 0 || | |
654 | repo_get_oid(repo, GITMODULES_HEAD, &oid) >= 0) { | |
655 | config_source.repo = repo; | |
656 | config_source.blob = oidstr = xstrdup(oid_to_hex(&oid)); | |
657 | if (repo != the_repository) | |
658 | add_submodule_odb_by_path(repo->objects->odb->path); | |
659 | } else { | |
660 | goto out; | |
661 | } | |
662 | ||
663 | config_with_options(fn, data, &config_source, &opts); | |
664 | ||
665 | out: | |
666 | free(oidstr); | |
667 | free(file); | |
668 | } | |
669 | } | |
670 | ||
671 | static int gitmodules_cb(const char *var, const char *value, void *data) | |
672 | { | |
673 | struct repository *repo = data; | |
674 | struct parse_config_parameter parameter; | |
675 | ||
676 | parameter.cache = repo->submodule_cache; | |
677 | parameter.treeish_name = NULL; | |
678 | parameter.gitmodules_oid = null_oid(); | |
679 | parameter.overwrite = 1; | |
680 | ||
681 | return parse_config(var, value, ¶meter); | |
682 | } | |
683 | ||
684 | void repo_read_gitmodules(struct repository *repo, int skip_if_read) | |
685 | { | |
686 | submodule_cache_check_init(repo); | |
687 | ||
688 | if (repo->submodule_cache->gitmodules_read && skip_if_read) | |
689 | return; | |
690 | ||
691 | if (repo_read_index(repo) < 0) | |
692 | return; | |
693 | ||
694 | if (!is_gitmodules_unmerged(repo->index)) | |
695 | config_from_gitmodules(gitmodules_cb, repo, repo); | |
696 | ||
697 | repo->submodule_cache->gitmodules_read = 1; | |
698 | } | |
699 | ||
700 | void gitmodules_config_oid(const struct object_id *commit_oid) | |
701 | { | |
702 | struct strbuf rev = STRBUF_INIT; | |
703 | struct object_id oid; | |
704 | ||
705 | submodule_cache_check_init(the_repository); | |
706 | ||
707 | if (gitmodule_oid_from_commit(commit_oid, &oid, &rev)) { | |
708 | git_config_from_blob_oid(gitmodules_cb, rev.buf, | |
709 | the_repository, &oid, the_repository); | |
710 | } | |
711 | strbuf_release(&rev); | |
712 | ||
713 | the_repository->submodule_cache->gitmodules_read = 1; | |
714 | } | |
715 | ||
716 | const struct submodule *submodule_from_name(struct repository *r, | |
717 | const struct object_id *treeish_name, | |
718 | const char *name) | |
719 | { | |
720 | repo_read_gitmodules(r, 1); | |
721 | return config_from(r->submodule_cache, treeish_name, name, lookup_name); | |
722 | } | |
723 | ||
724 | const struct submodule *submodule_from_path(struct repository *r, | |
725 | const struct object_id *treeish_name, | |
726 | const char *path) | |
727 | { | |
728 | repo_read_gitmodules(r, 1); | |
729 | return config_from(r->submodule_cache, treeish_name, path, lookup_path); | |
730 | } | |
731 | ||
732 | /** | |
733 | * Used internally by submodules_of_tree(). Recurses into 'treeish_name' | |
734 | * and appends submodule entries to 'out'. The submodule_cache expects | |
735 | * a root-level treeish_name and paths, so keep track of these values | |
736 | * with 'root_tree' and 'prefix'. | |
737 | */ | |
738 | static void traverse_tree_submodules(struct repository *r, | |
739 | const struct object_id *root_tree, | |
740 | char *prefix, | |
741 | const struct object_id *treeish_name, | |
742 | struct submodule_entry_list *out) | |
743 | { | |
744 | struct tree_desc tree; | |
745 | struct submodule_tree_entry *st_entry; | |
746 | struct name_entry *name_entry; | |
747 | char *tree_path = NULL; | |
748 | ||
749 | name_entry = xmalloc(sizeof(*name_entry)); | |
750 | ||
751 | fill_tree_descriptor(r, &tree, treeish_name); | |
752 | while (tree_entry(&tree, name_entry)) { | |
753 | if (prefix) | |
754 | tree_path = | |
755 | mkpathdup("%s/%s", prefix, name_entry->path); | |
756 | else | |
757 | tree_path = xstrdup(name_entry->path); | |
758 | ||
759 | if (S_ISGITLINK(name_entry->mode) && | |
760 | is_tree_submodule_active(r, root_tree, tree_path)) { | |
761 | ALLOC_GROW(out->entries, out->entry_nr + 1, | |
762 | out->entry_alloc); | |
763 | st_entry = &out->entries[out->entry_nr++]; | |
764 | ||
765 | st_entry->name_entry = xmalloc(sizeof(*st_entry->name_entry)); | |
766 | *st_entry->name_entry = *name_entry; | |
767 | st_entry->submodule = | |
768 | submodule_from_path(r, root_tree, tree_path); | |
769 | st_entry->repo = xmalloc(sizeof(*st_entry->repo)); | |
770 | if (repo_submodule_init(st_entry->repo, r, tree_path, | |
771 | root_tree)) | |
772 | FREE_AND_NULL(st_entry->repo); | |
773 | ||
774 | } else if (S_ISDIR(name_entry->mode)) | |
775 | traverse_tree_submodules(r, root_tree, tree_path, | |
776 | &name_entry->oid, out); | |
777 | free(tree_path); | |
778 | } | |
779 | } | |
780 | ||
781 | void submodules_of_tree(struct repository *r, | |
782 | const struct object_id *treeish_name, | |
783 | struct submodule_entry_list *out) | |
784 | { | |
785 | CALLOC_ARRAY(out->entries, 0); | |
786 | out->entry_nr = 0; | |
787 | out->entry_alloc = 0; | |
788 | ||
789 | traverse_tree_submodules(r, treeish_name, NULL, treeish_name, out); | |
790 | } | |
791 | ||
792 | void submodule_free(struct repository *r) | |
793 | { | |
794 | if (r->submodule_cache) | |
795 | submodule_cache_clear(r->submodule_cache); | |
796 | } | |
797 | ||
798 | static int config_print_callback(const char *var, const char *value, void *cb_data) | |
799 | { | |
800 | char *wanted_key = cb_data; | |
801 | ||
802 | if (!strcmp(wanted_key, var)) | |
803 | printf("%s\n", value); | |
804 | ||
805 | return 0; | |
806 | } | |
807 | ||
808 | int print_config_from_gitmodules(struct repository *repo, const char *key) | |
809 | { | |
810 | int ret; | |
811 | char *store_key; | |
812 | ||
813 | ret = git_config_parse_key(key, &store_key, NULL); | |
814 | if (ret < 0) | |
815 | return CONFIG_INVALID_KEY; | |
816 | ||
817 | config_from_gitmodules(config_print_callback, repo, store_key); | |
818 | ||
819 | free(store_key); | |
820 | return 0; | |
821 | } | |
822 | ||
823 | int config_set_in_gitmodules_file_gently(const char *key, const char *value) | |
824 | { | |
825 | int ret; | |
826 | ||
827 | ret = git_config_set_in_file_gently(GITMODULES_FILE, key, value); | |
828 | if (ret < 0) | |
829 | /* Maybe the user already did that, don't error out here */ | |
830 | warning(_("Could not update .gitmodules entry %s"), key); | |
831 | ||
832 | return ret; | |
833 | } | |
834 | ||
835 | struct fetch_config { | |
836 | int *max_children; | |
837 | int *recurse_submodules; | |
838 | }; | |
839 | ||
840 | static int gitmodules_fetch_config(const char *var, const char *value, void *cb) | |
841 | { | |
842 | struct fetch_config *config = cb; | |
843 | if (!strcmp(var, "submodule.fetchjobs")) { | |
844 | if (config->max_children) | |
845 | *(config->max_children) = | |
846 | parse_submodule_fetchjobs(var, value); | |
847 | return 0; | |
848 | } else if (!strcmp(var, "fetch.recursesubmodules")) { | |
849 | if (config->recurse_submodules) | |
850 | *(config->recurse_submodules) = | |
851 | parse_fetch_recurse_submodules_arg(var, value); | |
852 | return 0; | |
853 | } | |
854 | ||
855 | return 0; | |
856 | } | |
857 | ||
858 | void fetch_config_from_gitmodules(int *max_children, int *recurse_submodules) | |
859 | { | |
860 | struct fetch_config config = { | |
861 | .max_children = max_children, | |
862 | .recurse_submodules = recurse_submodules | |
863 | }; | |
864 | config_from_gitmodules(gitmodules_fetch_config, the_repository, &config); | |
865 | } | |
866 | ||
867 | static int gitmodules_update_clone_config(const char *var, const char *value, | |
868 | void *cb) | |
869 | { | |
870 | int *max_jobs = cb; | |
871 | if (!strcmp(var, "submodule.fetchjobs")) | |
872 | *max_jobs = parse_submodule_fetchjobs(var, value); | |
873 | return 0; | |
874 | } | |
875 | ||
876 | void update_clone_config_from_gitmodules(int *max_jobs) | |
877 | { | |
878 | config_from_gitmodules(gitmodules_update_clone_config, the_repository, &max_jobs); | |
879 | } |