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Commit | Line | Data |
---|---|---|
7bd9bcf3 MH |
1 | /* |
2 | * The backend-independent part of the reference module. | |
3 | */ | |
4 | ||
95fc7512 | 5 | #include "cache.h" |
b2141fc1 | 6 | #include "config.h" |
7d4558c4 | 7 | #include "hashmap.h" |
697cc8ef | 8 | #include "lockfile.h" |
b05855b5 | 9 | #include "iterator.h" |
85023577 | 10 | #include "refs.h" |
4cb77009 | 11 | #include "refs/refs-internal.h" |
67541597 | 12 | #include "run-command.h" |
cbd53a21 | 13 | #include "object-store.h" |
cf0adba7 JH |
14 | #include "object.h" |
15 | #include "tag.h" | |
5d0bc90e | 16 | #include "submodule.h" |
17eff96b | 17 | #include "worktree.h" |
dbbcd44f | 18 | #include "strvec.h" |
23a3f0cb | 19 | #include "repository.h" |
67541597 | 20 | #include "sigchain.h" |
3581d793 | 21 | |
3dce444f RS |
22 | /* |
23 | * List of all available backends | |
24 | */ | |
25 | static struct ref_storage_be *refs_backends = &refs_be_files; | |
26 | ||
27 | static struct ref_storage_be *find_ref_storage_backend(const char *name) | |
28 | { | |
29 | struct ref_storage_be *be; | |
30 | for (be = refs_backends; be; be = be->next) | |
31 | if (!strcmp(be->name, name)) | |
32 | return be; | |
33 | return NULL; | |
34 | } | |
35 | ||
36 | int ref_storage_backend_exists(const char *name) | |
37 | { | |
38 | return find_ref_storage_backend(name) != NULL; | |
39 | } | |
40 | ||
bc5fd6d3 | 41 | /* |
dde8a902 DT |
42 | * How to handle various characters in refnames: |
43 | * 0: An acceptable character for refs | |
5e650228 JH |
44 | * 1: End-of-component |
45 | * 2: ., look for a preceding . to reject .. in refs | |
46 | * 3: {, look for a preceding @ to reject @{ in refs | |
53a8555e | 47 | * 4: A bad character: ASCII control characters, and |
cd377f45 JK |
48 | * ":", "?", "[", "\", "^", "~", SP, or TAB |
49 | * 5: *, reject unless REFNAME_REFSPEC_PATTERN is set | |
dde8a902 DT |
50 | */ |
51 | static unsigned char refname_disposition[256] = { | |
5e650228 JH |
52 | 1, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, |
53 | 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, | |
cd377f45 | 54 | 4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 5, 0, 0, 0, 2, 1, |
5e650228 | 55 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 0, 0, 0, 0, 4, |
dde8a902 | 56 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
5e650228 JH |
57 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 4, 0, 4, 0, |
58 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
59 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3, 0, 0, 4, 4 | |
dde8a902 DT |
60 | }; |
61 | ||
62 | /* | |
63 | * Try to read one refname component from the front of refname. | |
64 | * Return the length of the component found, or -1 if the component is | |
65 | * not legal. It is legal if it is something reasonable to have under | |
66 | * ".git/refs/"; We do not like it if: | |
bc5fd6d3 | 67 | * |
1de16aec | 68 | * - it begins with ".", or |
bc5fd6d3 | 69 | * - it has double dots "..", or |
53a8555e | 70 | * - it has ASCII control characters, or |
cd377f45 JK |
71 | * - it has ":", "?", "[", "\", "^", "~", SP, or TAB anywhere, or |
72 | * - it has "*" anywhere unless REFNAME_REFSPEC_PATTERN is set, or | |
53a8555e JK |
73 | * - it ends with a "/", or |
74 | * - it ends with ".lock", or | |
75 | * - it contains a "@{" portion | |
1de16aec NTND |
76 | * |
77 | * When sanitized is not NULL, instead of rejecting the input refname | |
78 | * as an error, try to come up with a usable replacement for the input | |
79 | * refname in it. | |
bc5fd6d3 | 80 | */ |
1de16aec NTND |
81 | static int check_refname_component(const char *refname, int *flags, |
82 | struct strbuf *sanitized) | |
bc5fd6d3 MH |
83 | { |
84 | const char *cp; | |
85 | char last = '\0'; | |
1de16aec NTND |
86 | size_t component_start = 0; /* garbage - not a reasonable initial value */ |
87 | ||
88 | if (sanitized) | |
89 | component_start = sanitized->len; | |
bc5fd6d3 MH |
90 | |
91 | for (cp = refname; ; cp++) { | |
dde8a902 DT |
92 | int ch = *cp & 255; |
93 | unsigned char disp = refname_disposition[ch]; | |
1de16aec NTND |
94 | |
95 | if (sanitized && disp != 1) | |
96 | strbuf_addch(sanitized, ch); | |
97 | ||
dde8a902 | 98 | switch (disp) { |
5e650228 | 99 | case 1: |
dde8a902 | 100 | goto out; |
5e650228 | 101 | case 2: |
1de16aec NTND |
102 | if (last == '.') { /* Refname contains "..". */ |
103 | if (sanitized) | |
104 | /* collapse ".." to single "." */ | |
105 | strbuf_setlen(sanitized, sanitized->len - 1); | |
106 | else | |
107 | return -1; | |
108 | } | |
dde8a902 | 109 | break; |
5e650228 | 110 | case 3: |
1de16aec NTND |
111 | if (last == '@') { /* Refname contains "@{". */ |
112 | if (sanitized) | |
113 | sanitized->buf[sanitized->len-1] = '-'; | |
114 | else | |
115 | return -1; | |
116 | } | |
bc5fd6d3 | 117 | break; |
5e650228 | 118 | case 4: |
1de16aec NTND |
119 | /* forbidden char */ |
120 | if (sanitized) | |
121 | sanitized->buf[sanitized->len-1] = '-'; | |
122 | else | |
123 | return -1; | |
124 | break; | |
cd377f45 | 125 | case 5: |
1de16aec NTND |
126 | if (!(*flags & REFNAME_REFSPEC_PATTERN)) { |
127 | /* refspec can't be a pattern */ | |
128 | if (sanitized) | |
129 | sanitized->buf[sanitized->len-1] = '-'; | |
130 | else | |
131 | return -1; | |
132 | } | |
cd377f45 JK |
133 | |
134 | /* | |
135 | * Unset the pattern flag so that we only accept | |
136 | * a single asterisk for one side of refspec. | |
137 | */ | |
138 | *flags &= ~ REFNAME_REFSPEC_PATTERN; | |
139 | break; | |
dde8a902 | 140 | } |
bc5fd6d3 MH |
141 | last = ch; |
142 | } | |
dde8a902 | 143 | out: |
bc5fd6d3 | 144 | if (cp == refname) |
dac529e4 | 145 | return 0; /* Component has zero length. */ |
1de16aec NTND |
146 | |
147 | if (refname[0] == '.') { /* Component starts with '.'. */ | |
148 | if (sanitized) | |
149 | sanitized->buf[component_start] = '-'; | |
150 | else | |
151 | return -1; | |
152 | } | |
7108ad23 | 153 | if (cp - refname >= LOCK_SUFFIX_LEN && |
1de16aec NTND |
154 | !memcmp(cp - LOCK_SUFFIX_LEN, LOCK_SUFFIX, LOCK_SUFFIX_LEN)) { |
155 | if (!sanitized) | |
156 | return -1; | |
157 | /* Refname ends with ".lock". */ | |
158 | while (strbuf_strip_suffix(sanitized, LOCK_SUFFIX)) { | |
159 | /* try again in case we have .lock.lock */ | |
160 | } | |
161 | } | |
bc5fd6d3 MH |
162 | return cp - refname; |
163 | } | |
164 | ||
1de16aec NTND |
165 | static int check_or_sanitize_refname(const char *refname, int flags, |
166 | struct strbuf *sanitized) | |
bc5fd6d3 MH |
167 | { |
168 | int component_len, component_count = 0; | |
169 | ||
1de16aec | 170 | if (!strcmp(refname, "@")) { |
9ba89f48 | 171 | /* Refname is a single character '@'. */ |
1de16aec NTND |
172 | if (sanitized) |
173 | strbuf_addch(sanitized, '-'); | |
174 | else | |
175 | return -1; | |
176 | } | |
9ba89f48 | 177 | |
bc5fd6d3 | 178 | while (1) { |
1de16aec NTND |
179 | if (sanitized && sanitized->len) |
180 | strbuf_complete(sanitized, '/'); | |
181 | ||
bc5fd6d3 | 182 | /* We are at the start of a path component. */ |
1de16aec NTND |
183 | component_len = check_refname_component(refname, &flags, |
184 | sanitized); | |
185 | if (sanitized && component_len == 0) | |
186 | ; /* OK, omit empty component */ | |
187 | else if (component_len <= 0) | |
cd377f45 JK |
188 | return -1; |
189 | ||
bc5fd6d3 MH |
190 | component_count++; |
191 | if (refname[component_len] == '\0') | |
192 | break; | |
193 | /* Skip to next component. */ | |
194 | refname += component_len + 1; | |
195 | } | |
196 | ||
1de16aec NTND |
197 | if (refname[component_len - 1] == '.') { |
198 | /* Refname ends with '.'. */ | |
199 | if (sanitized) | |
200 | ; /* omit ending dot */ | |
201 | else | |
202 | return -1; | |
203 | } | |
bc5fd6d3 MH |
204 | if (!(flags & REFNAME_ALLOW_ONELEVEL) && component_count < 2) |
205 | return -1; /* Refname has only one component. */ | |
206 | return 0; | |
207 | } | |
208 | ||
1de16aec NTND |
209 | int check_refname_format(const char *refname, int flags) |
210 | { | |
211 | return check_or_sanitize_refname(refname, flags, NULL); | |
212 | } | |
213 | ||
214 | void sanitize_refname_component(const char *refname, struct strbuf *out) | |
215 | { | |
216 | if (check_or_sanitize_refname(refname, REFNAME_ALLOW_ONELEVEL, out)) | |
217 | BUG("sanitizing refname '%s' check returned error", refname); | |
218 | } | |
219 | ||
4cb77009 | 220 | int refname_is_safe(const char *refname) |
d0f810f0 | 221 | { |
39950fef MH |
222 | const char *rest; |
223 | ||
224 | if (skip_prefix(refname, "refs/", &rest)) { | |
d0f810f0 RS |
225 | char *buf; |
226 | int result; | |
e40f3557 MH |
227 | size_t restlen = strlen(rest); |
228 | ||
229 | /* rest must not be empty, or start or end with "/" */ | |
230 | if (!restlen || *rest == '/' || rest[restlen - 1] == '/') | |
231 | return 0; | |
d0f810f0 | 232 | |
d0f810f0 RS |
233 | /* |
234 | * Does the refname try to escape refs/? | |
235 | * For example: refs/foo/../bar is safe but refs/foo/../../bar | |
236 | * is not. | |
237 | */ | |
e40f3557 MH |
238 | buf = xmallocz(restlen); |
239 | result = !normalize_path_copy(buf, rest) && !strcmp(buf, rest); | |
d0f810f0 RS |
240 | free(buf); |
241 | return result; | |
242 | } | |
35db25c6 MH |
243 | |
244 | do { | |
d0f810f0 RS |
245 | if (!isupper(*refname) && *refname != '_') |
246 | return 0; | |
247 | refname++; | |
35db25c6 | 248 | } while (*refname); |
d0f810f0 RS |
249 | return 1; |
250 | } | |
251 | ||
67be7c5a MH |
252 | /* |
253 | * Return true if refname, which has the specified oid and flags, can | |
254 | * be resolved to an object in the database. If the referred-to object | |
255 | * does not exist, emit a warning and return false. | |
256 | */ | |
257 | int ref_resolves_to_object(const char *refname, | |
258 | const struct object_id *oid, | |
259 | unsigned int flags) | |
260 | { | |
261 | if (flags & REF_ISBROKEN) | |
262 | return 0; | |
98374a07 | 263 | if (!has_object_file(oid)) { |
661558f0 | 264 | error(_("%s does not point to a valid object!"), refname); |
67be7c5a MH |
265 | return 0; |
266 | } | |
267 | return 1; | |
268 | } | |
269 | ||
7d2df051 NTND |
270 | char *refs_resolve_refdup(struct ref_store *refs, |
271 | const char *refname, int resolve_flags, | |
0f2dc722 | 272 | struct object_id *oid, int *flags) |
7d2df051 NTND |
273 | { |
274 | const char *result; | |
275 | ||
276 | result = refs_resolve_ref_unsafe(refs, refname, resolve_flags, | |
49e61479 | 277 | oid, flags); |
7d2df051 NTND |
278 | return xstrdup_or_null(result); |
279 | } | |
280 | ||
7bd9bcf3 | 281 | char *resolve_refdup(const char *refname, int resolve_flags, |
0f2dc722 | 282 | struct object_id *oid, int *flags) |
e1e22e37 | 283 | { |
23a3f0cb | 284 | return refs_resolve_refdup(get_main_ref_store(the_repository), |
7d2df051 | 285 | refname, resolve_flags, |
0f2dc722 | 286 | oid, flags); |
cddc4258 MH |
287 | } |
288 | ||
7bd9bcf3 MH |
289 | /* The argument to filter_refs */ |
290 | struct ref_filter { | |
291 | const char *pattern; | |
9ab9b5df | 292 | const char *prefix; |
7bd9bcf3 MH |
293 | each_ref_fn *fn; |
294 | void *cb_data; | |
295 | }; | |
432ad41e | 296 | |
7d2df051 | 297 | int refs_read_ref_full(struct ref_store *refs, const char *refname, |
34c290a6 | 298 | int resolve_flags, struct object_id *oid, int *flags) |
732134ed | 299 | { |
49e61479 | 300 | if (refs_resolve_ref_unsafe(refs, refname, resolve_flags, oid, flags)) |
7bd9bcf3 MH |
301 | return 0; |
302 | return -1; | |
732134ed MH |
303 | } |
304 | ||
34c290a6 | 305 | int read_ref_full(const char *refname, int resolve_flags, struct object_id *oid, int *flags) |
7d2df051 | 306 | { |
23a3f0cb | 307 | return refs_read_ref_full(get_main_ref_store(the_repository), refname, |
34c290a6 | 308 | resolve_flags, oid, flags); |
7d2df051 NTND |
309 | } |
310 | ||
34c290a6 | 311 | int read_ref(const char *refname, struct object_id *oid) |
cddc4258 | 312 | { |
34c290a6 | 313 | return read_ref_full(refname, RESOLVE_REF_READING, oid, NULL); |
c774aab9 JP |
314 | } |
315 | ||
b3cd33d0 NTND |
316 | static int refs_ref_exists(struct ref_store *refs, const char *refname) |
317 | { | |
318 | return !!refs_resolve_ref_unsafe(refs, refname, RESOLVE_REF_READING, NULL, NULL); | |
319 | } | |
320 | ||
7bd9bcf3 | 321 | int ref_exists(const char *refname) |
bc5fd6d3 | 322 | { |
b3cd33d0 | 323 | return refs_ref_exists(get_main_ref_store(the_repository), refname); |
bc5fd6d3 MH |
324 | } |
325 | ||
7bd9bcf3 MH |
326 | static int filter_refs(const char *refname, const struct object_id *oid, |
327 | int flags, void *data) | |
432ad41e | 328 | { |
7bd9bcf3 MH |
329 | struct ref_filter *filter = (struct ref_filter *)data; |
330 | ||
55d34269 | 331 | if (wildmatch(filter->pattern, refname, 0)) |
7bd9bcf3 | 332 | return 0; |
9ab9b5df RA |
333 | if (filter->prefix) |
334 | skip_prefix(refname, filter->prefix, &refname); | |
7bd9bcf3 | 335 | return filter->fn(refname, oid, flags, filter->cb_data); |
432ad41e MH |
336 | } |
337 | ||
ac2ed0d7 | 338 | enum peel_status peel_object(const struct object_id *name, struct object_id *oid) |
c774aab9 | 339 | { |
0ebbcf70 | 340 | struct object *o = lookup_unknown_object(name); |
c774aab9 | 341 | |
7bd9bcf3 | 342 | if (o->type == OBJ_NONE) { |
0df8e965 | 343 | int type = oid_object_info(the_repository, name, NULL); |
6da43d93 | 344 | if (type < 0 || !object_as_type(o, type, 0)) |
7bd9bcf3 MH |
345 | return PEEL_INVALID; |
346 | } | |
bc5fd6d3 | 347 | |
7bd9bcf3 MH |
348 | if (o->type != OBJ_TAG) |
349 | return PEEL_NON_TAG; | |
e1980c9d | 350 | |
7bd9bcf3 MH |
351 | o = deref_tag_noverify(o); |
352 | if (!o) | |
353 | return PEEL_INVALID; | |
354 | ||
ac2ed0d7 | 355 | oidcpy(oid, &o->oid); |
7bd9bcf3 | 356 | return PEEL_PEELED; |
e1980c9d JH |
357 | } |
358 | ||
7bd9bcf3 MH |
359 | struct warn_if_dangling_data { |
360 | FILE *fp; | |
361 | const char *refname; | |
362 | const struct string_list *refnames; | |
363 | const char *msg_fmt; | |
364 | }; | |
bc5fd6d3 | 365 | |
7bd9bcf3 MH |
366 | static int warn_if_dangling_symref(const char *refname, const struct object_id *oid, |
367 | int flags, void *cb_data) | |
368 | { | |
369 | struct warn_if_dangling_data *d = cb_data; | |
370 | const char *resolves_to; | |
bc5fd6d3 | 371 | |
7bd9bcf3 MH |
372 | if (!(flags & REF_ISSYMREF)) |
373 | return 0; | |
bc5fd6d3 | 374 | |
744c040b | 375 | resolves_to = resolve_ref_unsafe(refname, 0, NULL, NULL); |
7bd9bcf3 MH |
376 | if (!resolves_to |
377 | || (d->refname | |
378 | ? strcmp(resolves_to, d->refname) | |
379 | : !string_list_has_string(d->refnames, resolves_to))) { | |
380 | return 0; | |
381 | } | |
bc5fd6d3 | 382 | |
7bd9bcf3 MH |
383 | fprintf(d->fp, d->msg_fmt, refname); |
384 | fputc('\n', d->fp); | |
385 | return 0; | |
bc5fd6d3 MH |
386 | } |
387 | ||
7bd9bcf3 | 388 | void warn_dangling_symref(FILE *fp, const char *msg_fmt, const char *refname) |
f348ac92 | 389 | { |
7bd9bcf3 MH |
390 | struct warn_if_dangling_data data; |
391 | ||
392 | data.fp = fp; | |
393 | data.refname = refname; | |
394 | data.refnames = NULL; | |
395 | data.msg_fmt = msg_fmt; | |
396 | for_each_rawref(warn_if_dangling_symref, &data); | |
f348ac92 MH |
397 | } |
398 | ||
7bd9bcf3 | 399 | void warn_dangling_symrefs(FILE *fp, const char *msg_fmt, const struct string_list *refnames) |
432ad41e | 400 | { |
7bd9bcf3 | 401 | struct warn_if_dangling_data data; |
432ad41e | 402 | |
7bd9bcf3 MH |
403 | data.fp = fp; |
404 | data.refname = NULL; | |
405 | data.refnames = refnames; | |
406 | data.msg_fmt = msg_fmt; | |
407 | for_each_rawref(warn_if_dangling_symref, &data); | |
432ad41e MH |
408 | } |
409 | ||
7d2df051 NTND |
410 | int refs_for_each_tag_ref(struct ref_store *refs, each_ref_fn fn, void *cb_data) |
411 | { | |
412 | return refs_for_each_ref_in(refs, "refs/tags/", fn, cb_data); | |
413 | } | |
414 | ||
7bd9bcf3 | 415 | int for_each_tag_ref(each_ref_fn fn, void *cb_data) |
432ad41e | 416 | { |
23a3f0cb | 417 | return refs_for_each_tag_ref(get_main_ref_store(the_repository), fn, cb_data); |
432ad41e MH |
418 | } |
419 | ||
7d2df051 NTND |
420 | int refs_for_each_branch_ref(struct ref_store *refs, each_ref_fn fn, void *cb_data) |
421 | { | |
422 | return refs_for_each_ref_in(refs, "refs/heads/", fn, cb_data); | |
432ad41e MH |
423 | } |
424 | ||
7bd9bcf3 | 425 | int for_each_branch_ref(each_ref_fn fn, void *cb_data) |
432ad41e | 426 | { |
23a3f0cb | 427 | return refs_for_each_branch_ref(get_main_ref_store(the_repository), fn, cb_data); |
432ad41e MH |
428 | } |
429 | ||
7d2df051 NTND |
430 | int refs_for_each_remote_ref(struct ref_store *refs, each_ref_fn fn, void *cb_data) |
431 | { | |
432 | return refs_for_each_ref_in(refs, "refs/remotes/", fn, cb_data); | |
202a56a9 | 433 | } |
432ad41e | 434 | |
7bd9bcf3 | 435 | int for_each_remote_ref(each_ref_fn fn, void *cb_data) |
e9c4c111 | 436 | { |
23a3f0cb | 437 | return refs_for_each_remote_ref(get_main_ref_store(the_repository), fn, cb_data); |
202a56a9 MH |
438 | } |
439 | ||
7bd9bcf3 MH |
440 | int head_ref_namespaced(each_ref_fn fn, void *cb_data) |
441 | { | |
442 | struct strbuf buf = STRBUF_INIT; | |
443 | int ret = 0; | |
444 | struct object_id oid; | |
445 | int flag; | |
c774aab9 | 446 | |
7bd9bcf3 | 447 | strbuf_addf(&buf, "%sHEAD", get_git_namespace()); |
34c290a6 | 448 | if (!read_ref_full(buf.buf, RESOLVE_REF_READING, &oid, &flag)) |
7bd9bcf3 MH |
449 | ret = fn(buf.buf, &oid, flag, cb_data); |
450 | strbuf_release(&buf); | |
c774aab9 | 451 | |
7bd9bcf3 | 452 | return ret; |
e9c4c111 | 453 | } |
c774aab9 | 454 | |
65516f58 RA |
455 | void normalize_glob_ref(struct string_list_item *item, const char *prefix, |
456 | const char *pattern) | |
457 | { | |
458 | struct strbuf normalized_pattern = STRBUF_INIT; | |
459 | ||
460 | if (*pattern == '/') | |
461 | BUG("pattern must not start with '/'"); | |
462 | ||
463 | if (prefix) { | |
464 | strbuf_addstr(&normalized_pattern, prefix); | |
465 | } | |
466 | else if (!starts_with(pattern, "refs/")) | |
467 | strbuf_addstr(&normalized_pattern, "refs/"); | |
468 | strbuf_addstr(&normalized_pattern, pattern); | |
469 | strbuf_strip_suffix(&normalized_pattern, "/"); | |
470 | ||
471 | item->string = strbuf_detach(&normalized_pattern, NULL); | |
472 | item->util = has_glob_specials(pattern) ? NULL : item->string; | |
473 | strbuf_release(&normalized_pattern); | |
474 | } | |
475 | ||
7bd9bcf3 MH |
476 | int for_each_glob_ref_in(each_ref_fn fn, const char *pattern, |
477 | const char *prefix, void *cb_data) | |
662428f4 | 478 | { |
7bd9bcf3 MH |
479 | struct strbuf real_pattern = STRBUF_INIT; |
480 | struct ref_filter filter; | |
481 | int ret; | |
d08bae7e | 482 | |
59556548 | 483 | if (!prefix && !starts_with(pattern, "refs/")) |
d08bae7e | 484 | strbuf_addstr(&real_pattern, "refs/"); |
b09fe971 IL |
485 | else if (prefix) |
486 | strbuf_addstr(&real_pattern, prefix); | |
d08bae7e IL |
487 | strbuf_addstr(&real_pattern, pattern); |
488 | ||
894a9d33 | 489 | if (!has_glob_specials(pattern)) { |
9517e6b8 | 490 | /* Append implied '/' '*' if not present. */ |
00b6c178 | 491 | strbuf_complete(&real_pattern, '/'); |
d08bae7e IL |
492 | /* No need to check for '*', there is none. */ |
493 | strbuf_addch(&real_pattern, '*'); | |
494 | } | |
495 | ||
496 | filter.pattern = real_pattern.buf; | |
9ab9b5df | 497 | filter.prefix = prefix; |
d08bae7e IL |
498 | filter.fn = fn; |
499 | filter.cb_data = cb_data; | |
500 | ret = for_each_ref(filter_refs, &filter); | |
501 | ||
502 | strbuf_release(&real_pattern); | |
503 | return ret; | |
504 | } | |
505 | ||
b09fe971 IL |
506 | int for_each_glob_ref(each_ref_fn fn, const char *pattern, void *cb_data) |
507 | { | |
508 | return for_each_glob_ref_in(fn, pattern, NULL, cb_data); | |
509 | } | |
510 | ||
4577e483 | 511 | const char *prettify_refname(const char *name) |
a9c37a72 | 512 | { |
3e5b36c6 SG |
513 | if (skip_prefix(name, "refs/heads/", &name) || |
514 | skip_prefix(name, "refs/tags/", &name) || | |
515 | skip_prefix(name, "refs/remotes/", &name)) | |
516 | ; /* nothing */ | |
517 | return name; | |
a9c37a72 DB |
518 | } |
519 | ||
54457fe5 | 520 | static const char *ref_rev_parse_rules[] = { |
79803322 SP |
521 | "%.*s", |
522 | "refs/%.*s", | |
523 | "refs/tags/%.*s", | |
524 | "refs/heads/%.*s", | |
525 | "refs/remotes/%.*s", | |
526 | "refs/remotes/%.*s/HEAD", | |
527 | NULL | |
528 | }; | |
529 | ||
60650a48 JH |
530 | #define NUM_REV_PARSE_RULES (ARRAY_SIZE(ref_rev_parse_rules) - 1) |
531 | ||
532 | /* | |
533 | * Is it possible that the caller meant full_name with abbrev_name? | |
534 | * If so return a non-zero value to signal "yes"; the magnitude of | |
535 | * the returned value gives the precedence used for disambiguation. | |
536 | * | |
537 | * If abbrev_name cannot mean full_name, return 0. | |
538 | */ | |
54457fe5 | 539 | int refname_match(const char *abbrev_name, const char *full_name) |
79803322 SP |
540 | { |
541 | const char **p; | |
542 | const int abbrev_name_len = strlen(abbrev_name); | |
60650a48 | 543 | const int num_rules = NUM_REV_PARSE_RULES; |
79803322 | 544 | |
60650a48 JH |
545 | for (p = ref_rev_parse_rules; *p; p++) |
546 | if (!strcmp(full_name, mkpath(*p, abbrev_name_len, abbrev_name))) | |
547 | return &ref_rev_parse_rules[num_rules] - p; | |
79803322 SP |
548 | |
549 | return 0; | |
550 | } | |
551 | ||
b4be7410 BW |
552 | /* |
553 | * Given a 'prefix' expand it by the rules in 'ref_rev_parse_rules' and add | |
554 | * the results to 'prefixes' | |
555 | */ | |
c972bf4c | 556 | void expand_ref_prefix(struct strvec *prefixes, const char *prefix) |
b4be7410 BW |
557 | { |
558 | const char **p; | |
559 | int len = strlen(prefix); | |
560 | ||
561 | for (p = ref_rev_parse_rules; *p; p++) | |
c972bf4c | 562 | strvec_pushf(prefixes, *p, len, prefix); |
b4be7410 BW |
563 | } |
564 | ||
8747ebb7 DGW |
565 | char *repo_default_branch_name(struct repository *r) |
566 | { | |
567 | const char *config_key = "init.defaultbranch"; | |
568 | const char *config_display_key = "init.defaultBranch"; | |
569 | char *ret = NULL, *full_ref; | |
570 | ||
571 | if (repo_config_get_string(r, config_key, &ret) < 0) | |
572 | die(_("could not retrieve `%s`"), config_display_key); | |
573 | ||
574 | if (!ret) | |
575 | ret = xstrdup("master"); | |
576 | ||
577 | full_ref = xstrfmt("refs/heads/%s", ret); | |
578 | if (check_refname_format(full_ref, 0)) | |
579 | die(_("invalid branch name: %s = %s"), config_display_key, ret); | |
580 | free(full_ref); | |
581 | ||
582 | return ret; | |
583 | } | |
584 | ||
585 | const char *git_default_branch_name(void) | |
586 | { | |
587 | static char *ret; | |
588 | ||
589 | if (!ret) | |
590 | ret = repo_default_branch_name(the_repository); | |
591 | ||
592 | return ret; | |
593 | } | |
594 | ||
ff74f7f1 JH |
595 | /* |
596 | * *string and *len will only be substituted, and *string returned (for | |
597 | * later free()ing) if the string passed in is a magic short-hand form | |
598 | * to name a branch. | |
599 | */ | |
8f56e9d4 NTND |
600 | static char *substitute_branch_name(struct repository *r, |
601 | const char **string, int *len) | |
ff74f7f1 JH |
602 | { |
603 | struct strbuf buf = STRBUF_INIT; | |
8f56e9d4 | 604 | int ret = repo_interpret_branch_name(r, *string, *len, &buf, 0); |
ff74f7f1 JH |
605 | |
606 | if (ret == *len) { | |
607 | size_t size; | |
608 | *string = strbuf_detach(&buf, &size); | |
609 | *len = size; | |
610 | return (char *)*string; | |
611 | } | |
612 | ||
613 | return NULL; | |
614 | } | |
615 | ||
d8984c53 NTND |
616 | int repo_dwim_ref(struct repository *r, const char *str, int len, |
617 | struct object_id *oid, char **ref) | |
ff74f7f1 | 618 | { |
d8984c53 NTND |
619 | char *last_branch = substitute_branch_name(r, &str, &len); |
620 | int refs_found = expand_ref(r, str, len, oid, ref); | |
41da7111 NTND |
621 | free(last_branch); |
622 | return refs_found; | |
623 | } | |
624 | ||
d8984c53 NTND |
625 | int dwim_ref(const char *str, int len, struct object_id *oid, char **ref) |
626 | { | |
627 | return repo_dwim_ref(the_repository, str, len, oid, ref); | |
628 | } | |
629 | ||
0b1dbf53 NTND |
630 | int expand_ref(struct repository *repo, const char *str, int len, |
631 | struct object_id *oid, char **ref) | |
41da7111 | 632 | { |
ff74f7f1 JH |
633 | const char **p, *r; |
634 | int refs_found = 0; | |
6cd4a898 | 635 | struct strbuf fullref = STRBUF_INIT; |
ff74f7f1 JH |
636 | |
637 | *ref = NULL; | |
638 | for (p = ref_rev_parse_rules; *p; p++) { | |
cca5fa64 | 639 | struct object_id oid_from_ref; |
640 | struct object_id *this_result; | |
ff74f7f1 JH |
641 | int flag; |
642 | ||
cca5fa64 | 643 | this_result = refs_found ? &oid_from_ref : oid; |
6cd4a898 JK |
644 | strbuf_reset(&fullref); |
645 | strbuf_addf(&fullref, *p, len, str); | |
0b1dbf53 NTND |
646 | r = refs_resolve_ref_unsafe(get_main_ref_store(repo), |
647 | fullref.buf, RESOLVE_REF_READING, | |
648 | this_result, &flag); | |
ff74f7f1 JH |
649 | if (r) { |
650 | if (!refs_found++) | |
651 | *ref = xstrdup(r); | |
652 | if (!warn_ambiguous_refs) | |
653 | break; | |
6cd4a898 | 654 | } else if ((flag & REF_ISSYMREF) && strcmp(fullref.buf, "HEAD")) { |
661558f0 | 655 | warning(_("ignoring dangling symref %s"), fullref.buf); |
6cd4a898 | 656 | } else if ((flag & REF_ISBROKEN) && strchr(fullref.buf, '/')) { |
661558f0 | 657 | warning(_("ignoring broken ref %s"), fullref.buf); |
55956350 | 658 | } |
ff74f7f1 | 659 | } |
6cd4a898 | 660 | strbuf_release(&fullref); |
ff74f7f1 JH |
661 | return refs_found; |
662 | } | |
663 | ||
56700903 NTND |
664 | int repo_dwim_log(struct repository *r, const char *str, int len, |
665 | struct object_id *oid, char **log) | |
ff74f7f1 | 666 | { |
56700903 NTND |
667 | struct ref_store *refs = get_main_ref_store(r); |
668 | char *last_branch = substitute_branch_name(r, &str, &len); | |
ff74f7f1 JH |
669 | const char **p; |
670 | int logs_found = 0; | |
6cd4a898 | 671 | struct strbuf path = STRBUF_INIT; |
ff74f7f1 JH |
672 | |
673 | *log = NULL; | |
674 | for (p = ref_rev_parse_rules; *p; p++) { | |
334dc52f | 675 | struct object_id hash; |
ff74f7f1 JH |
676 | const char *ref, *it; |
677 | ||
6cd4a898 JK |
678 | strbuf_reset(&path); |
679 | strbuf_addf(&path, *p, len, str); | |
56700903 NTND |
680 | ref = refs_resolve_ref_unsafe(refs, path.buf, |
681 | RESOLVE_REF_READING, | |
682 | &hash, NULL); | |
ff74f7f1 JH |
683 | if (!ref) |
684 | continue; | |
56700903 | 685 | if (refs_reflog_exists(refs, path.buf)) |
6cd4a898 | 686 | it = path.buf; |
56700903 NTND |
687 | else if (strcmp(ref, path.buf) && |
688 | refs_reflog_exists(refs, ref)) | |
ff74f7f1 JH |
689 | it = ref; |
690 | else | |
691 | continue; | |
692 | if (!logs_found++) { | |
693 | *log = xstrdup(it); | |
334dc52f | 694 | oidcpy(oid, &hash); |
ff74f7f1 | 695 | } |
7bd9bcf3 MH |
696 | if (!warn_ambiguous_refs) |
697 | break; | |
c0277d15 | 698 | } |
6cd4a898 | 699 | strbuf_release(&path); |
7bd9bcf3 MH |
700 | free(last_branch); |
701 | return logs_found; | |
2ddb5d17 BK |
702 | } |
703 | ||
56700903 NTND |
704 | int dwim_log(const char *str, int len, struct object_id *oid, char **log) |
705 | { | |
706 | return repo_dwim_log(the_repository, str, len, oid, log); | |
707 | } | |
708 | ||
266b1827 DT |
709 | static int is_per_worktree_ref(const char *refname) |
710 | { | |
ce414b33 | 711 | return !strcmp(refname, "HEAD") || |
8aff1a9c | 712 | starts_with(refname, "refs/worktree/") || |
a9be29c9 JS |
713 | starts_with(refname, "refs/bisect/") || |
714 | starts_with(refname, "refs/rewritten/"); | |
266b1827 DT |
715 | } |
716 | ||
717 | static int is_pseudoref_syntax(const char *refname) | |
718 | { | |
719 | const char *c; | |
720 | ||
721 | for (c = refname; *c; c++) { | |
722 | if (!isupper(*c) && *c != '-' && *c != '_') | |
723 | return 0; | |
724 | } | |
725 | ||
726 | return 1; | |
727 | } | |
728 | ||
3a3b9d8c NTND |
729 | static int is_main_pseudoref_syntax(const char *refname) |
730 | { | |
731 | return skip_prefix(refname, "main-worktree/", &refname) && | |
732 | *refname && | |
733 | is_pseudoref_syntax(refname); | |
734 | } | |
735 | ||
736 | static int is_other_pseudoref_syntax(const char *refname) | |
737 | { | |
738 | if (!skip_prefix(refname, "worktrees/", &refname)) | |
739 | return 0; | |
740 | refname = strchr(refname, '/'); | |
741 | if (!refname || !refname[1]) | |
742 | return 0; | |
743 | return is_pseudoref_syntax(refname + 1); | |
744 | } | |
745 | ||
266b1827 DT |
746 | enum ref_type ref_type(const char *refname) |
747 | { | |
748 | if (is_per_worktree_ref(refname)) | |
749 | return REF_TYPE_PER_WORKTREE; | |
750 | if (is_pseudoref_syntax(refname)) | |
751 | return REF_TYPE_PSEUDOREF; | |
3a3b9d8c NTND |
752 | if (is_main_pseudoref_syntax(refname)) |
753 | return REF_TYPE_MAIN_PSEUDOREF; | |
754 | if (is_other_pseudoref_syntax(refname)) | |
755 | return REF_TYPE_OTHER_PSEUDOREF; | |
5c79f74f | 756 | return REF_TYPE_NORMAL; |
266b1827 DT |
757 | } |
758 | ||
4ff0f01c MH |
759 | long get_files_ref_lock_timeout_ms(void) |
760 | { | |
761 | static int configured = 0; | |
762 | ||
763 | /* The default timeout is 100 ms: */ | |
764 | static int timeout_ms = 100; | |
765 | ||
766 | if (!configured) { | |
767 | git_config_get_int("core.filesreflocktimeout", &timeout_ms); | |
768 | configured = 1; | |
769 | } | |
770 | ||
771 | return timeout_ms; | |
772 | } | |
773 | ||
ae077771 | 774 | static int write_pseudoref(const char *pseudoref, const struct object_id *oid, |
775 | const struct object_id *old_oid, struct strbuf *err) | |
74ec19d4 DT |
776 | { |
777 | const char *filename; | |
778 | int fd; | |
01084515 | 779 | struct lock_file lock = LOCK_INIT; |
74ec19d4 DT |
780 | struct strbuf buf = STRBUF_INIT; |
781 | int ret = -1; | |
782 | ||
6ee18216 | 783 | if (!oid) |
784 | return 0; | |
785 | ||
ae077771 | 786 | strbuf_addf(&buf, "%s\n", oid_to_hex(oid)); |
74ec19d4 DT |
787 | |
788 | filename = git_path("%s", pseudoref); | |
01084515 | 789 | fd = hold_lock_file_for_update_timeout(&lock, filename, 0, |
4ff0f01c | 790 | get_files_ref_lock_timeout_ms()); |
74ec19d4 | 791 | if (fd < 0) { |
661558f0 | 792 | strbuf_addf(err, _("could not open '%s' for writing: %s"), |
74ec19d4 | 793 | filename, strerror(errno)); |
aeb014f6 | 794 | goto done; |
74ec19d4 DT |
795 | } |
796 | ||
ae077771 | 797 | if (old_oid) { |
798 | struct object_id actual_old_oid; | |
2c3aed13 | 799 | |
db0210d4 MÅ |
800 | if (read_ref(pseudoref, &actual_old_oid)) { |
801 | if (!is_null_oid(old_oid)) { | |
661558f0 | 802 | strbuf_addf(err, _("could not read ref '%s'"), |
db0210d4 MÅ |
803 | pseudoref); |
804 | rollback_lock_file(&lock); | |
805 | goto done; | |
806 | } | |
807 | } else if (is_null_oid(old_oid)) { | |
661558f0 | 808 | strbuf_addf(err, _("ref '%s' already exists"), |
db0210d4 MÅ |
809 | pseudoref); |
810 | rollback_lock_file(&lock); | |
811 | goto done; | |
9001dc2a | 812 | } else if (!oideq(&actual_old_oid, old_oid)) { |
661558f0 | 813 | strbuf_addf(err, _("unexpected object ID when writing '%s'"), |
c0bdd658 | 814 | pseudoref); |
74ec19d4 DT |
815 | rollback_lock_file(&lock); |
816 | goto done; | |
817 | } | |
818 | } | |
819 | ||
06f46f23 | 820 | if (write_in_full(fd, buf.buf, buf.len) < 0) { |
661558f0 | 821 | strbuf_addf(err, _("could not write to '%s'"), filename); |
74ec19d4 DT |
822 | rollback_lock_file(&lock); |
823 | goto done; | |
824 | } | |
825 | ||
826 | commit_lock_file(&lock); | |
827 | ret = 0; | |
828 | done: | |
829 | strbuf_release(&buf); | |
830 | return ret; | |
831 | } | |
832 | ||
2616a5e5 | 833 | static int delete_pseudoref(const char *pseudoref, const struct object_id *old_oid) |
74ec19d4 | 834 | { |
74ec19d4 DT |
835 | const char *filename; |
836 | ||
837 | filename = git_path("%s", pseudoref); | |
838 | ||
2616a5e5 | 839 | if (old_oid && !is_null_oid(old_oid)) { |
3c6fad4a | 840 | struct lock_file lock = LOCK_INIT; |
74ec19d4 | 841 | int fd; |
2616a5e5 | 842 | struct object_id actual_old_oid; |
74ec19d4 | 843 | |
4ff0f01c | 844 | fd = hold_lock_file_for_update_timeout( |
3c6fad4a | 845 | &lock, filename, 0, |
4ff0f01c | 846 | get_files_ref_lock_timeout_ms()); |
3c6fad4a MÅ |
847 | if (fd < 0) { |
848 | error_errno(_("could not open '%s' for writing"), | |
849 | filename); | |
850 | return -1; | |
851 | } | |
34c290a6 | 852 | if (read_ref(pseudoref, &actual_old_oid)) |
661558f0 | 853 | die(_("could not read ref '%s'"), pseudoref); |
9001dc2a | 854 | if (!oideq(&actual_old_oid, old_oid)) { |
661558f0 | 855 | error(_("unexpected object ID when deleting '%s'"), |
c0bdd658 | 856 | pseudoref); |
74ec19d4 DT |
857 | rollback_lock_file(&lock); |
858 | return -1; | |
a4c653df | 859 | } |
74ec19d4 DT |
860 | |
861 | unlink(filename); | |
862 | rollback_lock_file(&lock); | |
863 | } else { | |
864 | unlink(filename); | |
4bd18c43 | 865 | } |
a4c653df | 866 | |
4bd18c43 | 867 | return 0; |
95fc7512 | 868 | } |
d556fae2 | 869 | |
c0fe4e8b NTND |
870 | int refs_delete_ref(struct ref_store *refs, const char *msg, |
871 | const char *refname, | |
2616a5e5 | 872 | const struct object_id *old_oid, |
c0fe4e8b | 873 | unsigned int flags) |
41b625b0 | 874 | { |
7521cc46 | 875 | struct ref_transaction *transaction; |
a4c653df | 876 | struct strbuf err = STRBUF_INIT; |
8b5157e4 | 877 | |
c0fe4e8b | 878 | if (ref_type(refname) == REF_TYPE_PSEUDOREF) { |
23a3f0cb | 879 | assert(refs == get_main_ref_store(the_repository)); |
2616a5e5 | 880 | return delete_pseudoref(refname, old_oid); |
c0fe4e8b | 881 | } |
d48744d1 | 882 | |
c0fe4e8b | 883 | transaction = ref_store_transaction_begin(refs, &err); |
7521cc46 | 884 | if (!transaction || |
89f3bbdd | 885 | ref_transaction_delete(transaction, refname, old_oid, |
755b49ae | 886 | flags, msg, &err) || |
db7516ab | 887 | ref_transaction_commit(transaction, &err)) { |
7521cc46 RS |
888 | error("%s", err.buf); |
889 | ref_transaction_free(transaction); | |
890 | strbuf_release(&err); | |
c0277d15 | 891 | return 1; |
41b625b0 | 892 | } |
7bd9bcf3 MH |
893 | ref_transaction_free(transaction); |
894 | strbuf_release(&err); | |
b531394d BC |
895 | return 0; |
896 | } | |
41b625b0 | 897 | |
c0fe4e8b | 898 | int delete_ref(const char *msg, const char *refname, |
2616a5e5 | 899 | const struct object_id *old_oid, unsigned int flags) |
c0fe4e8b | 900 | { |
23a3f0cb | 901 | return refs_delete_ref(get_main_ref_store(the_repository), msg, refname, |
2616a5e5 | 902 | old_oid, flags); |
c0fe4e8b NTND |
903 | } |
904 | ||
523fa69c | 905 | static void copy_reflog_msg(struct strbuf *sb, const char *msg) |
0ec29a47 | 906 | { |
0ec29a47 JH |
907 | char c; |
908 | int wasspace = 1; | |
8b5157e4 | 909 | |
0ec29a47 JH |
910 | while ((c = *msg++)) { |
911 | if (wasspace && isspace(c)) | |
912 | continue; | |
913 | wasspace = isspace(c); | |
914 | if (wasspace) | |
915 | c = ' '; | |
80a6c207 | 916 | strbuf_addch(sb, c); |
a4c653df | 917 | } |
80a6c207 | 918 | strbuf_rtrim(sb); |
0ec29a47 | 919 | } |
8b5157e4 | 920 | |
523fa69c JH |
921 | static char *normalize_reflog_message(const char *msg) |
922 | { | |
923 | struct strbuf sb = STRBUF_INIT; | |
924 | ||
925 | if (msg && *msg) | |
926 | copy_reflog_msg(&sb, msg); | |
927 | return strbuf_detach(&sb, NULL); | |
928 | } | |
929 | ||
4cb77009 | 930 | int should_autocreate_reflog(const char *refname) |
4e2bef57 | 931 | { |
341fb286 CW |
932 | switch (log_all_ref_updates) { |
933 | case LOG_REFS_ALWAYS: | |
934 | return 1; | |
935 | case LOG_REFS_NORMAL: | |
936 | return starts_with(refname, "refs/heads/") || | |
937 | starts_with(refname, "refs/remotes/") || | |
938 | starts_with(refname, "refs/notes/") || | |
939 | !strcmp(refname, "HEAD"); | |
940 | default: | |
4e2bef57 | 941 | return 0; |
341fb286 | 942 | } |
4e2bef57 DT |
943 | } |
944 | ||
e7e0f26e | 945 | int is_branch(const char *refname) |
c3b0dec5 | 946 | { |
59556548 | 947 | return !strcmp(refname, "HEAD") || starts_with(refname, "refs/heads/"); |
41b625b0 NP |
948 | } |
949 | ||
4207ed28 RS |
950 | struct read_ref_at_cb { |
951 | const char *refname; | |
dddbad72 | 952 | timestamp_t at_time; |
4207ed28 RS |
953 | int cnt; |
954 | int reccnt; | |
8eb36d94 | 955 | struct object_id *oid; |
4207ed28 RS |
956 | int found_it; |
957 | ||
8eb36d94 | 958 | struct object_id ooid; |
959 | struct object_id noid; | |
4207ed28 | 960 | int tz; |
dddbad72 | 961 | timestamp_t date; |
4207ed28 | 962 | char **msg; |
dddbad72 | 963 | timestamp_t *cutoff_time; |
4207ed28 RS |
964 | int *cutoff_tz; |
965 | int *cutoff_cnt; | |
966 | }; | |
967 | ||
9461d272 | 968 | static int read_ref_at_ent(struct object_id *ooid, struct object_id *noid, |
dddbad72 | 969 | const char *email, timestamp_t timestamp, int tz, |
4207ed28 RS |
970 | const char *message, void *cb_data) |
971 | { | |
972 | struct read_ref_at_cb *cb = cb_data; | |
973 | ||
974 | cb->reccnt++; | |
975 | cb->tz = tz; | |
976 | cb->date = timestamp; | |
977 | ||
978 | if (timestamp <= cb->at_time || cb->cnt == 0) { | |
979 | if (cb->msg) | |
980 | *cb->msg = xstrdup(message); | |
981 | if (cb->cutoff_time) | |
982 | *cb->cutoff_time = timestamp; | |
983 | if (cb->cutoff_tz) | |
984 | *cb->cutoff_tz = tz; | |
985 | if (cb->cutoff_cnt) | |
986 | *cb->cutoff_cnt = cb->reccnt - 1; | |
987 | /* | |
78fb4579 | 988 | * we have not yet updated cb->[n|o]oid so they still |
4207ed28 RS |
989 | * hold the values for the previous record. |
990 | */ | |
8eb36d94 | 991 | if (!is_null_oid(&cb->ooid)) { |
992 | oidcpy(cb->oid, noid); | |
9001dc2a | 993 | if (!oideq(&cb->ooid, noid)) |
661558f0 | 994 | warning(_("log for ref %s has gap after %s"), |
a5481a6c | 995 | cb->refname, show_date(cb->date, cb->tz, DATE_MODE(RFC2822))); |
4207ed28 RS |
996 | } |
997 | else if (cb->date == cb->at_time) | |
8eb36d94 | 998 | oidcpy(cb->oid, noid); |
9001dc2a | 999 | else if (!oideq(noid, cb->oid)) |
661558f0 | 1000 | warning(_("log for ref %s unexpectedly ended on %s"), |
4207ed28 | 1001 | cb->refname, show_date(cb->date, cb->tz, |
a5481a6c | 1002 | DATE_MODE(RFC2822))); |
8eb36d94 | 1003 | oidcpy(&cb->ooid, ooid); |
1004 | oidcpy(&cb->noid, noid); | |
4207ed28 RS |
1005 | cb->found_it = 1; |
1006 | return 1; | |
1007 | } | |
8eb36d94 | 1008 | oidcpy(&cb->ooid, ooid); |
1009 | oidcpy(&cb->noid, noid); | |
4207ed28 RS |
1010 | if (cb->cnt > 0) |
1011 | cb->cnt--; | |
1012 | return 0; | |
1013 | } | |
1014 | ||
9461d272 | 1015 | static int read_ref_at_ent_oldest(struct object_id *ooid, struct object_id *noid, |
dddbad72 | 1016 | const char *email, timestamp_t timestamp, |
4207ed28 RS |
1017 | int tz, const char *message, void *cb_data) |
1018 | { | |
1019 | struct read_ref_at_cb *cb = cb_data; | |
1020 | ||
1021 | if (cb->msg) | |
1022 | *cb->msg = xstrdup(message); | |
1023 | if (cb->cutoff_time) | |
1024 | *cb->cutoff_time = timestamp; | |
1025 | if (cb->cutoff_tz) | |
1026 | *cb->cutoff_tz = tz; | |
1027 | if (cb->cutoff_cnt) | |
1028 | *cb->cutoff_cnt = cb->reccnt; | |
8eb36d94 | 1029 | oidcpy(cb->oid, ooid); |
1030 | if (is_null_oid(cb->oid)) | |
1031 | oidcpy(cb->oid, noid); | |
4207ed28 RS |
1032 | /* We just want the first entry */ |
1033 | return 1; | |
16d7cc90 JH |
1034 | } |
1035 | ||
7fdff474 NTND |
1036 | int read_ref_at(struct ref_store *refs, const char *refname, |
1037 | unsigned int flags, timestamp_t at_time, int cnt, | |
8eb36d94 | 1038 | struct object_id *oid, char **msg, |
dddbad72 | 1039 | timestamp_t *cutoff_time, int *cutoff_tz, int *cutoff_cnt) |
d556fae2 | 1040 | { |
4207ed28 | 1041 | struct read_ref_at_cb cb; |
d556fae2 | 1042 | |
4207ed28 RS |
1043 | memset(&cb, 0, sizeof(cb)); |
1044 | cb.refname = refname; | |
1045 | cb.at_time = at_time; | |
1046 | cb.cnt = cnt; | |
1047 | cb.msg = msg; | |
1048 | cb.cutoff_time = cutoff_time; | |
1049 | cb.cutoff_tz = cutoff_tz; | |
1050 | cb.cutoff_cnt = cutoff_cnt; | |
8eb36d94 | 1051 | cb.oid = oid; |
4207ed28 | 1052 | |
7fdff474 | 1053 | refs_for_each_reflog_ent_reverse(refs, refname, read_ref_at_ent, &cb); |
4207ed28 | 1054 | |
c41a87dd | 1055 | if (!cb.reccnt) { |
321c89bf | 1056 | if (flags & GET_OID_QUIETLY) |
c41a87dd DA |
1057 | exit(128); |
1058 | else | |
661558f0 | 1059 | die(_("log for %s is empty"), refname); |
c41a87dd | 1060 | } |
4207ed28 RS |
1061 | if (cb.found_it) |
1062 | return 0; | |
1063 | ||
7fdff474 | 1064 | refs_for_each_reflog_ent(refs, refname, read_ref_at_ent_oldest, &cb); |
d556fae2 | 1065 | |
16d7cc90 | 1066 | return 1; |
d556fae2 | 1067 | } |
2ff81662 | 1068 | |
c0fe4e8b NTND |
1069 | struct ref_transaction *ref_store_transaction_begin(struct ref_store *refs, |
1070 | struct strbuf *err) | |
caa4046c | 1071 | { |
c0fe4e8b | 1072 | struct ref_transaction *tr; |
5a603b04 JN |
1073 | assert(err); |
1074 | ||
c0fe4e8b NTND |
1075 | tr = xcalloc(1, sizeof(struct ref_transaction)); |
1076 | tr->ref_store = refs; | |
1077 | return tr; | |
1078 | } | |
1079 | ||
1080 | struct ref_transaction *ref_transaction_begin(struct strbuf *err) | |
1081 | { | |
23a3f0cb | 1082 | return ref_store_transaction_begin(get_main_ref_store(the_repository), err); |
caa4046c MH |
1083 | } |
1084 | ||
026bd1d3 | 1085 | void ref_transaction_free(struct ref_transaction *transaction) |
caa4046c | 1086 | { |
43a2dfde | 1087 | size_t i; |
caa4046c | 1088 | |
1b07255c RS |
1089 | if (!transaction) |
1090 | return; | |
1091 | ||
30173b88 MH |
1092 | switch (transaction->state) { |
1093 | case REF_TRANSACTION_OPEN: | |
1094 | case REF_TRANSACTION_CLOSED: | |
1095 | /* OK */ | |
1096 | break; | |
1097 | case REF_TRANSACTION_PREPARED: | |
033abf97 | 1098 | BUG("free called on a prepared reference transaction"); |
30173b88 MH |
1099 | break; |
1100 | default: | |
033abf97 | 1101 | BUG("unexpected reference transaction state"); |
30173b88 MH |
1102 | break; |
1103 | } | |
1104 | ||
db7516ab RS |
1105 | for (i = 0; i < transaction->nr; i++) { |
1106 | free(transaction->updates[i]->msg); | |
88615910 | 1107 | free(transaction->updates[i]); |
db7516ab | 1108 | } |
caa4046c MH |
1109 | free(transaction->updates); |
1110 | free(transaction); | |
1111 | } | |
1112 | ||
71564516 MH |
1113 | struct ref_update *ref_transaction_add_update( |
1114 | struct ref_transaction *transaction, | |
1115 | const char *refname, unsigned int flags, | |
89f3bbdd | 1116 | const struct object_id *new_oid, |
1117 | const struct object_id *old_oid, | |
71564516 | 1118 | const char *msg) |
caa4046c | 1119 | { |
96ffc06f | 1120 | struct ref_update *update; |
71564516 MH |
1121 | |
1122 | if (transaction->state != REF_TRANSACTION_OPEN) | |
033abf97 | 1123 | BUG("update called for transaction that is not open"); |
71564516 | 1124 | |
96ffc06f | 1125 | FLEX_ALLOC_STR(update, refname, refname); |
caa4046c MH |
1126 | ALLOC_GROW(transaction->updates, transaction->nr + 1, transaction->alloc); |
1127 | transaction->updates[transaction->nr++] = update; | |
71564516 MH |
1128 | |
1129 | update->flags = flags; | |
1130 | ||
1131 | if (flags & REF_HAVE_NEW) | |
89f3bbdd | 1132 | oidcpy(&update->new_oid, new_oid); |
71564516 | 1133 | if (flags & REF_HAVE_OLD) |
89f3bbdd | 1134 | oidcpy(&update->old_oid, old_oid); |
523fa69c | 1135 | update->msg = normalize_reflog_message(msg); |
caa4046c MH |
1136 | return update; |
1137 | } | |
1138 | ||
8e34800e RS |
1139 | int ref_transaction_update(struct ref_transaction *transaction, |
1140 | const char *refname, | |
89f3bbdd | 1141 | const struct object_id *new_oid, |
1142 | const struct object_id *old_oid, | |
1d147bdf | 1143 | unsigned int flags, const char *msg, |
8e34800e | 1144 | struct strbuf *err) |
caa4046c | 1145 | { |
5a603b04 JN |
1146 | assert(err); |
1147 | ||
89f3bbdd | 1148 | if ((new_oid && !is_null_oid(new_oid)) ? |
8a679de6 MH |
1149 | check_refname_format(refname, REFNAME_ALLOW_ONELEVEL) : |
1150 | !refname_is_safe(refname)) { | |
661558f0 | 1151 | strbuf_addf(err, _("refusing to update ref with bad name '%s'"), |
d0f810f0 RS |
1152 | refname); |
1153 | return -1; | |
1154 | } | |
1155 | ||
a9bbbcec MH |
1156 | if (flags & ~REF_TRANSACTION_UPDATE_ALLOWED_FLAGS) |
1157 | BUG("illegal flags 0x%x passed to ref_transaction_update()", flags); | |
c788c54c | 1158 | |
89f3bbdd | 1159 | flags |= (new_oid ? REF_HAVE_NEW : 0) | (old_oid ? REF_HAVE_OLD : 0); |
71564516 MH |
1160 | |
1161 | ref_transaction_add_update(transaction, refname, flags, | |
89f3bbdd | 1162 | new_oid, old_oid, msg); |
8e34800e | 1163 | return 0; |
caa4046c MH |
1164 | } |
1165 | ||
b416af5b RS |
1166 | int ref_transaction_create(struct ref_transaction *transaction, |
1167 | const char *refname, | |
89f3bbdd | 1168 | const struct object_id *new_oid, |
fec14ec3 | 1169 | unsigned int flags, const char *msg, |
b416af5b | 1170 | struct strbuf *err) |
caa4046c | 1171 | { |
89f3bbdd | 1172 | if (!new_oid || is_null_oid(new_oid)) |
033abf97 | 1173 | BUG("create called without valid new_oid"); |
89f3bbdd | 1174 | return ref_transaction_update(transaction, refname, new_oid, |
1175 | &null_oid, flags, msg, err); | |
caa4046c MH |
1176 | } |
1177 | ||
8c8bdc0d RS |
1178 | int ref_transaction_delete(struct ref_transaction *transaction, |
1179 | const char *refname, | |
89f3bbdd | 1180 | const struct object_id *old_oid, |
fb5a6bb6 | 1181 | unsigned int flags, const char *msg, |
8c8bdc0d | 1182 | struct strbuf *err) |
caa4046c | 1183 | { |
89f3bbdd | 1184 | if (old_oid && is_null_oid(old_oid)) |
033abf97 | 1185 | BUG("delete called with old_oid set to zeros"); |
1d147bdf | 1186 | return ref_transaction_update(transaction, refname, |
89f3bbdd | 1187 | &null_oid, old_oid, |
1d147bdf | 1188 | flags, msg, err); |
caa4046c MH |
1189 | } |
1190 | ||
16180334 MH |
1191 | int ref_transaction_verify(struct ref_transaction *transaction, |
1192 | const char *refname, | |
89f3bbdd | 1193 | const struct object_id *old_oid, |
16180334 MH |
1194 | unsigned int flags, |
1195 | struct strbuf *err) | |
1196 | { | |
89f3bbdd | 1197 | if (!old_oid) |
033abf97 | 1198 | BUG("verify called with old_oid set to NULL"); |
16180334 | 1199 | return ref_transaction_update(transaction, refname, |
89f3bbdd | 1200 | NULL, old_oid, |
16180334 MH |
1201 | flags, NULL, err); |
1202 | } | |
1203 | ||
c0fe4e8b | 1204 | int refs_update_ref(struct ref_store *refs, const char *msg, |
ae077771 | 1205 | const char *refname, const struct object_id *new_oid, |
1206 | const struct object_id *old_oid, unsigned int flags, | |
c0fe4e8b | 1207 | enum action_on_err onerr) |
4738a333 | 1208 | { |
74ec19d4 | 1209 | struct ref_transaction *t = NULL; |
b4d75ac1 | 1210 | struct strbuf err = STRBUF_INIT; |
74ec19d4 | 1211 | int ret = 0; |
b4d75ac1 | 1212 | |
74ec19d4 | 1213 | if (ref_type(refname) == REF_TYPE_PSEUDOREF) { |
23a3f0cb | 1214 | assert(refs == get_main_ref_store(the_repository)); |
ae077771 | 1215 | ret = write_pseudoref(refname, new_oid, old_oid, &err); |
74ec19d4 | 1216 | } else { |
c0fe4e8b | 1217 | t = ref_store_transaction_begin(refs, &err); |
74ec19d4 | 1218 | if (!t || |
89f3bbdd | 1219 | ref_transaction_update(t, refname, new_oid, old_oid, |
74ec19d4 DT |
1220 | flags, msg, &err) || |
1221 | ref_transaction_commit(t, &err)) { | |
1222 | ret = 1; | |
1223 | ref_transaction_free(t); | |
1224 | } | |
1225 | } | |
1226 | if (ret) { | |
661558f0 | 1227 | const char *str = _("update_ref failed for ref '%s': %s"); |
b4d75ac1 | 1228 | |
b4d75ac1 RS |
1229 | switch (onerr) { |
1230 | case UPDATE_REFS_MSG_ON_ERR: | |
1231 | error(str, refname, err.buf); | |
1232 | break; | |
1233 | case UPDATE_REFS_DIE_ON_ERR: | |
1234 | die(str, refname, err.buf); | |
1235 | break; | |
1236 | case UPDATE_REFS_QUIET_ON_ERR: | |
1237 | break; | |
1238 | } | |
1239 | strbuf_release(&err); | |
4738a333 | 1240 | return 1; |
b4d75ac1 RS |
1241 | } |
1242 | strbuf_release(&err); | |
74ec19d4 DT |
1243 | if (t) |
1244 | ref_transaction_free(t); | |
b4d75ac1 | 1245 | return 0; |
4738a333 BK |
1246 | } |
1247 | ||
c0fe4e8b | 1248 | int update_ref(const char *msg, const char *refname, |
ae077771 | 1249 | const struct object_id *new_oid, |
1250 | const struct object_id *old_oid, | |
c0fe4e8b NTND |
1251 | unsigned int flags, enum action_on_err onerr) |
1252 | { | |
23a3f0cb | 1253 | return refs_update_ref(get_main_ref_store(the_repository), msg, refname, new_oid, |
ae077771 | 1254 | old_oid, flags, onerr); |
c0fe4e8b NTND |
1255 | } |
1256 | ||
546edf37 NTND |
1257 | char *refs_shorten_unambiguous_ref(struct ref_store *refs, |
1258 | const char *refname, int strict) | |
7c2b3029 JK |
1259 | { |
1260 | int i; | |
1261 | static char **scanf_fmts; | |
1262 | static int nr_rules; | |
1263 | char *short_name; | |
6cd4a898 | 1264 | struct strbuf resolved_buf = STRBUF_INIT; |
7c2b3029 | 1265 | |
7c2b3029 | 1266 | if (!nr_rules) { |
4346663a MH |
1267 | /* |
1268 | * Pre-generate scanf formats from ref_rev_parse_rules[]. | |
1269 | * Generate a format suitable for scanf from a | |
1270 | * ref_rev_parse_rules rule by interpolating "%s" at the | |
1271 | * location of the "%.*s". | |
1272 | */ | |
7c2b3029 | 1273 | size_t total_len = 0; |
84d5633f | 1274 | size_t offset = 0; |
7c2b3029 JK |
1275 | |
1276 | /* the rule list is NULL terminated, count them first */ | |
a4165851 | 1277 | for (nr_rules = 0; ref_rev_parse_rules[nr_rules]; nr_rules++) |
7902fe03 MH |
1278 | /* -2 for strlen("%.*s") - strlen("%s"); +1 for NUL */ |
1279 | total_len += strlen(ref_rev_parse_rules[nr_rules]) - 2 + 1; | |
7c2b3029 | 1280 | |
50492f7b | 1281 | scanf_fmts = xmalloc(st_add(st_mult(sizeof(char *), nr_rules), total_len)); |
7c2b3029 | 1282 | |
84d5633f | 1283 | offset = 0; |
7c2b3029 | 1284 | for (i = 0; i < nr_rules; i++) { |
4346663a | 1285 | assert(offset < total_len); |
84d5633f | 1286 | scanf_fmts[i] = (char *)&scanf_fmts[nr_rules] + offset; |
bf4baf1f JK |
1287 | offset += xsnprintf(scanf_fmts[i], total_len - offset, |
1288 | ref_rev_parse_rules[i], 2, "%s") + 1; | |
7c2b3029 JK |
1289 | } |
1290 | } | |
1291 | ||
1292 | /* bail out if there are no rules */ | |
1293 | if (!nr_rules) | |
dfefa935 | 1294 | return xstrdup(refname); |
7c2b3029 | 1295 | |
dfefa935 MH |
1296 | /* buffer for scanf result, at most refname must fit */ |
1297 | short_name = xstrdup(refname); | |
7c2b3029 JK |
1298 | |
1299 | /* skip first rule, it will always match */ | |
1300 | for (i = nr_rules - 1; i > 0 ; --i) { | |
1301 | int j; | |
6e7b3309 | 1302 | int rules_to_fail = i; |
7c2b3029 JK |
1303 | int short_name_len; |
1304 | ||
dfefa935 | 1305 | if (1 != sscanf(refname, scanf_fmts[i], short_name)) |
7c2b3029 JK |
1306 | continue; |
1307 | ||
1308 | short_name_len = strlen(short_name); | |
1309 | ||
6e7b3309 BW |
1310 | /* |
1311 | * in strict mode, all (except the matched one) rules | |
1312 | * must fail to resolve to a valid non-ambiguous ref | |
1313 | */ | |
1314 | if (strict) | |
1315 | rules_to_fail = nr_rules; | |
1316 | ||
7c2b3029 JK |
1317 | /* |
1318 | * check if the short name resolves to a valid ref, | |
1319 | * but use only rules prior to the matched one | |
1320 | */ | |
6e7b3309 | 1321 | for (j = 0; j < rules_to_fail; j++) { |
7c2b3029 | 1322 | const char *rule = ref_rev_parse_rules[j]; |
7c2b3029 | 1323 | |
6e7b3309 BW |
1324 | /* skip matched rule */ |
1325 | if (i == j) | |
1326 | continue; | |
1327 | ||
7c2b3029 JK |
1328 | /* |
1329 | * the short name is ambiguous, if it resolves | |
1330 | * (with this previous rule) to a valid ref | |
1331 | * read_ref() returns 0 on success | |
1332 | */ | |
6cd4a898 JK |
1333 | strbuf_reset(&resolved_buf); |
1334 | strbuf_addf(&resolved_buf, rule, | |
1335 | short_name_len, short_name); | |
546edf37 | 1336 | if (refs_ref_exists(refs, resolved_buf.buf)) |
7c2b3029 JK |
1337 | break; |
1338 | } | |
1339 | ||
1340 | /* | |
1341 | * short name is non-ambiguous if all previous rules | |
1342 | * haven't resolved to a valid ref | |
1343 | */ | |
6cd4a898 JK |
1344 | if (j == rules_to_fail) { |
1345 | strbuf_release(&resolved_buf); | |
7c2b3029 | 1346 | return short_name; |
6cd4a898 | 1347 | } |
7c2b3029 JK |
1348 | } |
1349 | ||
6cd4a898 | 1350 | strbuf_release(&resolved_buf); |
7c2b3029 | 1351 | free(short_name); |
dfefa935 | 1352 | return xstrdup(refname); |
7c2b3029 | 1353 | } |
daebaa78 | 1354 | |
546edf37 NTND |
1355 | char *shorten_unambiguous_ref(const char *refname, int strict) |
1356 | { | |
1357 | return refs_shorten_unambiguous_ref(get_main_ref_store(the_repository), | |
1358 | refname, strict); | |
1359 | } | |
1360 | ||
daebaa78 JH |
1361 | static struct string_list *hide_refs; |
1362 | ||
1363 | int parse_hide_refs_config(const char *var, const char *value, const char *section) | |
1364 | { | |
ad8c7cda | 1365 | const char *key; |
daebaa78 | 1366 | if (!strcmp("transfer.hiderefs", var) || |
ad8c7cda JK |
1367 | (!parse_config_key(var, section, NULL, NULL, &key) && |
1368 | !strcmp(key, "hiderefs"))) { | |
daebaa78 JH |
1369 | char *ref; |
1370 | int len; | |
1371 | ||
1372 | if (!value) | |
1373 | return config_error_nonbool(var); | |
1374 | ref = xstrdup(value); | |
1375 | len = strlen(ref); | |
1376 | while (len && ref[len - 1] == '/') | |
1377 | ref[--len] = '\0'; | |
1378 | if (!hide_refs) { | |
1379 | hide_refs = xcalloc(1, sizeof(*hide_refs)); | |
1380 | hide_refs->strdup_strings = 1; | |
1381 | } | |
1382 | string_list_append(hide_refs, ref); | |
1383 | } | |
1384 | return 0; | |
1385 | } | |
1386 | ||
78a766ab | 1387 | int ref_is_hidden(const char *refname, const char *refname_full) |
daebaa78 | 1388 | { |
2bc31d16 | 1389 | int i; |
daebaa78 JH |
1390 | |
1391 | if (!hide_refs) | |
1392 | return 0; | |
2bc31d16 JK |
1393 | for (i = hide_refs->nr - 1; i >= 0; i--) { |
1394 | const char *match = hide_refs->items[i].string; | |
78a766ab | 1395 | const char *subject; |
2bc31d16 | 1396 | int neg = 0; |
7a40a95e | 1397 | const char *p; |
2bc31d16 JK |
1398 | |
1399 | if (*match == '!') { | |
1400 | neg = 1; | |
1401 | match++; | |
1402 | } | |
1403 | ||
78a766ab LF |
1404 | if (*match == '^') { |
1405 | subject = refname_full; | |
1406 | match++; | |
1407 | } else { | |
1408 | subject = refname; | |
1409 | } | |
1410 | ||
1411 | /* refname can be NULL when namespaces are used. */ | |
7a40a95e CC |
1412 | if (subject && |
1413 | skip_prefix(subject, match, &p) && | |
1414 | (!*p || *p == '/')) | |
2bc31d16 | 1415 | return !neg; |
daebaa78 JH |
1416 | } |
1417 | return 0; | |
1418 | } | |
fa5b1830 | 1419 | |
0845122c DT |
1420 | const char *find_descendant_ref(const char *dirname, |
1421 | const struct string_list *extras, | |
1422 | const struct string_list *skip) | |
fa5b1830 | 1423 | { |
0845122c | 1424 | int pos; |
fa5b1830 | 1425 | |
0845122c DT |
1426 | if (!extras) |
1427 | return NULL; | |
fa5b1830 MH |
1428 | |
1429 | /* | |
0845122c DT |
1430 | * Look at the place where dirname would be inserted into |
1431 | * extras. If there is an entry at that position that starts | |
1432 | * with dirname (remember, dirname includes the trailing | |
1433 | * slash) and is not in skip, then we have a conflict. | |
fa5b1830 | 1434 | */ |
0845122c DT |
1435 | for (pos = string_list_find_insert_index(extras, dirname, 0); |
1436 | pos < extras->nr; pos++) { | |
1437 | const char *extra_refname = extras->items[pos].string; | |
fa5b1830 | 1438 | |
0845122c DT |
1439 | if (!starts_with(extra_refname, dirname)) |
1440 | break; | |
1441 | ||
1442 | if (!skip || !string_list_has_string(skip, extra_refname)) | |
1443 | return extra_refname; | |
fa5b1830 | 1444 | } |
0845122c DT |
1445 | return NULL; |
1446 | } | |
fa5b1830 | 1447 | |
7d2df051 NTND |
1448 | int refs_rename_ref_available(struct ref_store *refs, |
1449 | const char *old_refname, | |
1450 | const char *new_refname) | |
0845122c DT |
1451 | { |
1452 | struct string_list skip = STRING_LIST_INIT_NODUP; | |
1453 | struct strbuf err = STRBUF_INIT; | |
ff3a299c | 1454 | int ok; |
fa5b1830 | 1455 | |
ff3a299c | 1456 | string_list_insert(&skip, old_refname); |
7d2df051 NTND |
1457 | ok = !refs_verify_refname_available(refs, new_refname, |
1458 | NULL, &skip, &err); | |
ff3a299c | 1459 | if (!ok) |
0845122c DT |
1460 | error("%s", err.buf); |
1461 | ||
1462 | string_list_clear(&skip, 0); | |
1463 | strbuf_release(&err); | |
ff3a299c | 1464 | return ok; |
fa5b1830 | 1465 | } |
2bf68ed5 | 1466 | |
62f0b399 | 1467 | int refs_head_ref(struct ref_store *refs, each_ref_fn fn, void *cb_data) |
2bf68ed5 DT |
1468 | { |
1469 | struct object_id oid; | |
1470 | int flag; | |
1471 | ||
62f0b399 | 1472 | if (!refs_read_ref_full(refs, "HEAD", RESOLVE_REF_READING, |
34c290a6 | 1473 | &oid, &flag)) |
2bf68ed5 DT |
1474 | return fn("HEAD", &oid, flag, cb_data); |
1475 | ||
1476 | return 0; | |
1477 | } | |
1478 | ||
1479 | int head_ref(each_ref_fn fn, void *cb_data) | |
1480 | { | |
23a3f0cb | 1481 | return refs_head_ref(get_main_ref_store(the_repository), fn, cb_data); |
2bf68ed5 | 1482 | } |
93770590 | 1483 | |
e121b9cb MH |
1484 | struct ref_iterator *refs_ref_iterator_begin( |
1485 | struct ref_store *refs, | |
1486 | const char *prefix, int trim, int flags) | |
1487 | { | |
1488 | struct ref_iterator *iter; | |
1489 | ||
0a0865b8 MH |
1490 | if (ref_paranoia < 0) |
1491 | ref_paranoia = git_env_bool("GIT_REF_PARANOIA", 0); | |
1492 | if (ref_paranoia) | |
1493 | flags |= DO_FOR_EACH_INCLUDE_BROKEN; | |
1494 | ||
e121b9cb | 1495 | iter = refs->be->iterator_begin(refs, prefix, flags); |
c7599718 MH |
1496 | |
1497 | /* | |
1498 | * `iterator_begin()` already takes care of prefix, but we | |
1499 | * might need to do some trimming: | |
1500 | */ | |
1501 | if (trim) | |
1502 | iter = prefix_ref_iterator_begin(iter, "", trim); | |
e121b9cb | 1503 | |
8738a8a4 MH |
1504 | /* Sanity check for subclasses: */ |
1505 | if (!iter->ordered) | |
1506 | BUG("reference iterator is not ordered"); | |
1507 | ||
e121b9cb MH |
1508 | return iter; |
1509 | } | |
1510 | ||
4c4de895 MH |
1511 | /* |
1512 | * Call fn for each reference in the specified submodule for which the | |
1513 | * refname begins with prefix. If trim is non-zero, then trim that | |
1514 | * many characters off the beginning of each refname before passing | |
1515 | * the refname to fn. flags can be DO_FOR_EACH_INCLUDE_BROKEN to | |
1516 | * include broken references in the iteration. If fn ever returns a | |
1517 | * non-zero value, stop the iteration and return that value; | |
1518 | * otherwise, return 0. | |
1519 | */ | |
4a6067cd SB |
1520 | static int do_for_each_repo_ref(struct repository *r, const char *prefix, |
1521 | each_repo_ref_fn fn, int trim, int flags, | |
1522 | void *cb_data) | |
1523 | { | |
1524 | struct ref_iterator *iter; | |
1525 | struct ref_store *refs = get_main_ref_store(r); | |
1526 | ||
1527 | if (!refs) | |
1528 | return 0; | |
1529 | ||
1530 | iter = refs_ref_iterator_begin(refs, prefix, trim, flags); | |
1531 | ||
1532 | return do_for_each_repo_ref_iterator(r, iter, fn, cb_data); | |
1533 | } | |
1534 | ||
1535 | struct do_for_each_ref_help { | |
1536 | each_ref_fn *fn; | |
1537 | void *cb_data; | |
1538 | }; | |
1539 | ||
1540 | static int do_for_each_ref_helper(struct repository *r, | |
1541 | const char *refname, | |
1542 | const struct object_id *oid, | |
1543 | int flags, | |
1544 | void *cb_data) | |
1545 | { | |
1546 | struct do_for_each_ref_help *hp = cb_data; | |
1547 | ||
1548 | return hp->fn(refname, oid, flags, hp->cb_data); | |
1549 | } | |
1550 | ||
7d2df051 | 1551 | static int do_for_each_ref(struct ref_store *refs, const char *prefix, |
4c4de895 MH |
1552 | each_ref_fn fn, int trim, int flags, void *cb_data) |
1553 | { | |
1554 | struct ref_iterator *iter; | |
4a6067cd | 1555 | struct do_for_each_ref_help hp = { fn, cb_data }; |
4c4de895 | 1556 | |
00eebe35 MH |
1557 | if (!refs) |
1558 | return 0; | |
1559 | ||
e121b9cb | 1560 | iter = refs_ref_iterator_begin(refs, prefix, trim, flags); |
4c4de895 | 1561 | |
4a6067cd SB |
1562 | return do_for_each_repo_ref_iterator(the_repository, iter, |
1563 | do_for_each_ref_helper, &hp); | |
4c4de895 MH |
1564 | } |
1565 | ||
7d2df051 NTND |
1566 | int refs_for_each_ref(struct ref_store *refs, each_ref_fn fn, void *cb_data) |
1567 | { | |
1568 | return do_for_each_ref(refs, "", fn, 0, 0, cb_data); | |
1569 | } | |
1570 | ||
93770590 DT |
1571 | int for_each_ref(each_ref_fn fn, void *cb_data) |
1572 | { | |
23a3f0cb | 1573 | return refs_for_each_ref(get_main_ref_store(the_repository), fn, cb_data); |
93770590 DT |
1574 | } |
1575 | ||
7d2df051 NTND |
1576 | int refs_for_each_ref_in(struct ref_store *refs, const char *prefix, |
1577 | each_ref_fn fn, void *cb_data) | |
1578 | { | |
1579 | return do_for_each_ref(refs, prefix, fn, strlen(prefix), 0, cb_data); | |
93770590 DT |
1580 | } |
1581 | ||
1582 | int for_each_ref_in(const char *prefix, each_ref_fn fn, void *cb_data) | |
1583 | { | |
23a3f0cb | 1584 | return refs_for_each_ref_in(get_main_ref_store(the_repository), prefix, fn, cb_data); |
93770590 DT |
1585 | } |
1586 | ||
1587 | int for_each_fullref_in(const char *prefix, each_ref_fn fn, void *cb_data, unsigned int broken) | |
1588 | { | |
1589 | unsigned int flag = 0; | |
1590 | ||
1591 | if (broken) | |
1592 | flag = DO_FOR_EACH_INCLUDE_BROKEN; | |
23a3f0cb | 1593 | return do_for_each_ref(get_main_ref_store(the_repository), |
7d2df051 | 1594 | prefix, fn, 0, flag, cb_data); |
93770590 DT |
1595 | } |
1596 | ||
073cf63c NTND |
1597 | int refs_for_each_fullref_in(struct ref_store *refs, const char *prefix, |
1598 | each_ref_fn fn, void *cb_data, | |
1599 | unsigned int broken) | |
03df567f MH |
1600 | { |
1601 | unsigned int flag = 0; | |
1602 | ||
1603 | if (broken) | |
1604 | flag = DO_FOR_EACH_INCLUDE_BROKEN; | |
073cf63c | 1605 | return do_for_each_ref(refs, prefix, fn, 0, flag, cb_data); |
03df567f MH |
1606 | } |
1607 | ||
212e0f7e | 1608 | int for_each_replace_ref(struct repository *r, each_repo_ref_fn fn, void *cb_data) |
93770590 | 1609 | { |
212e0f7e SB |
1610 | return do_for_each_repo_ref(r, git_replace_ref_base, fn, |
1611 | strlen(git_replace_ref_base), | |
1612 | DO_FOR_EACH_INCLUDE_BROKEN, cb_data); | |
93770590 DT |
1613 | } |
1614 | ||
1615 | int for_each_namespaced_ref(each_ref_fn fn, void *cb_data) | |
1616 | { | |
1617 | struct strbuf buf = STRBUF_INIT; | |
1618 | int ret; | |
1619 | strbuf_addf(&buf, "%srefs/", get_git_namespace()); | |
23a3f0cb | 1620 | ret = do_for_each_ref(get_main_ref_store(the_repository), |
7d2df051 | 1621 | buf.buf, fn, 0, 0, cb_data); |
93770590 DT |
1622 | strbuf_release(&buf); |
1623 | return ret; | |
1624 | } | |
1625 | ||
7d2df051 | 1626 | int refs_for_each_rawref(struct ref_store *refs, each_ref_fn fn, void *cb_data) |
93770590 | 1627 | { |
7d2df051 | 1628 | return do_for_each_ref(refs, "", fn, 0, |
93770590 DT |
1629 | DO_FOR_EACH_INCLUDE_BROKEN, cb_data); |
1630 | } | |
2d0663b2 | 1631 | |
7d2df051 NTND |
1632 | int for_each_rawref(each_ref_fn fn, void *cb_data) |
1633 | { | |
23a3f0cb | 1634 | return refs_for_each_rawref(get_main_ref_store(the_repository), fn, cb_data); |
7d2df051 NTND |
1635 | } |
1636 | ||
470be518 | 1637 | int refs_read_raw_ref(struct ref_store *ref_store, |
99afe91a | 1638 | const char *refname, struct object_id *oid, |
470be518 MH |
1639 | struct strbuf *referent, unsigned int *type) |
1640 | { | |
99afe91a | 1641 | return ref_store->be->read_raw_ref(ref_store, refname, oid, referent, type); |
470be518 MH |
1642 | } |
1643 | ||
2d0663b2 | 1644 | /* This function needs to return a meaningful errno on failure */ |
7d2df051 | 1645 | const char *refs_resolve_ref_unsafe(struct ref_store *refs, |
3c0cb0cb MH |
1646 | const char *refname, |
1647 | int resolve_flags, | |
49e61479 | 1648 | struct object_id *oid, int *flags) |
2d0663b2 DT |
1649 | { |
1650 | static struct strbuf sb_refname = STRBUF_INIT; | |
54fad661 | 1651 | struct object_id unused_oid; |
2d0663b2 DT |
1652 | int unused_flags; |
1653 | int symref_count; | |
1654 | ||
49e61479 | 1655 | if (!oid) |
1656 | oid = &unused_oid; | |
2d0663b2 DT |
1657 | if (!flags) |
1658 | flags = &unused_flags; | |
1659 | ||
1660 | *flags = 0; | |
1661 | ||
1662 | if (check_refname_format(refname, REFNAME_ALLOW_ONELEVEL)) { | |
1663 | if (!(resolve_flags & RESOLVE_REF_ALLOW_BAD_NAME) || | |
1664 | !refname_is_safe(refname)) { | |
1665 | errno = EINVAL; | |
1666 | return NULL; | |
1667 | } | |
1668 | ||
1669 | /* | |
1670 | * dwim_ref() uses REF_ISBROKEN to distinguish between | |
1671 | * missing refs and refs that were present but invalid, | |
1672 | * to complain about the latter to stderr. | |
1673 | * | |
1674 | * We don't know whether the ref exists, so don't set | |
1675 | * REF_ISBROKEN yet. | |
1676 | */ | |
1677 | *flags |= REF_BAD_NAME; | |
1678 | } | |
1679 | ||
1680 | for (symref_count = 0; symref_count < SYMREF_MAXDEPTH; symref_count++) { | |
1681 | unsigned int read_flags = 0; | |
1682 | ||
470be518 | 1683 | if (refs_read_raw_ref(refs, refname, |
99afe91a | 1684 | oid, &sb_refname, &read_flags)) { |
2d0663b2 | 1685 | *flags |= read_flags; |
a1c1d817 JK |
1686 | |
1687 | /* In reading mode, refs must eventually resolve */ | |
1688 | if (resolve_flags & RESOLVE_REF_READING) | |
1689 | return NULL; | |
1690 | ||
1691 | /* | |
1692 | * Otherwise a missing ref is OK. But the files backend | |
1693 | * may show errors besides ENOENT if there are | |
1694 | * similarly-named refs. | |
1695 | */ | |
1696 | if (errno != ENOENT && | |
1697 | errno != EISDIR && | |
1698 | errno != ENOTDIR) | |
2d0663b2 | 1699 | return NULL; |
a1c1d817 | 1700 | |
49e61479 | 1701 | oidclr(oid); |
2d0663b2 DT |
1702 | if (*flags & REF_BAD_NAME) |
1703 | *flags |= REF_ISBROKEN; | |
1704 | return refname; | |
1705 | } | |
1706 | ||
1707 | *flags |= read_flags; | |
1708 | ||
1709 | if (!(read_flags & REF_ISSYMREF)) { | |
1710 | if (*flags & REF_BAD_NAME) { | |
49e61479 | 1711 | oidclr(oid); |
2d0663b2 DT |
1712 | *flags |= REF_ISBROKEN; |
1713 | } | |
1714 | return refname; | |
1715 | } | |
1716 | ||
1717 | refname = sb_refname.buf; | |
1718 | if (resolve_flags & RESOLVE_REF_NO_RECURSE) { | |
49e61479 | 1719 | oidclr(oid); |
2d0663b2 DT |
1720 | return refname; |
1721 | } | |
1722 | if (check_refname_format(refname, REFNAME_ALLOW_ONELEVEL)) { | |
1723 | if (!(resolve_flags & RESOLVE_REF_ALLOW_BAD_NAME) || | |
1724 | !refname_is_safe(refname)) { | |
1725 | errno = EINVAL; | |
1726 | return NULL; | |
1727 | } | |
1728 | ||
1729 | *flags |= REF_ISBROKEN | REF_BAD_NAME; | |
1730 | } | |
1731 | } | |
1732 | ||
1733 | errno = ELOOP; | |
1734 | return NULL; | |
1735 | } | |
00eebe35 | 1736 | |
6fb5acfd DT |
1737 | /* backend functions */ |
1738 | int refs_init_db(struct strbuf *err) | |
1739 | { | |
23a3f0cb | 1740 | struct ref_store *refs = get_main_ref_store(the_repository); |
6fb5acfd DT |
1741 | |
1742 | return refs->be->init_db(refs, err); | |
1743 | } | |
1744 | ||
bd40dcda | 1745 | const char *resolve_ref_unsafe(const char *refname, int resolve_flags, |
49e61479 | 1746 | struct object_id *oid, int *flags) |
bd40dcda | 1747 | { |
23a3f0cb | 1748 | return refs_resolve_ref_unsafe(get_main_ref_store(the_repository), refname, |
49e61479 | 1749 | resolve_flags, oid, flags); |
bd40dcda MH |
1750 | } |
1751 | ||
a8355bb7 | 1752 | int resolve_gitlink_ref(const char *submodule, const char *refname, |
a98e6101 | 1753 | struct object_id *oid) |
424dcc76 | 1754 | { |
424dcc76 MH |
1755 | struct ref_store *refs; |
1756 | int flags; | |
1757 | ||
29babbee | 1758 | refs = get_submodule_ref_store(submodule); |
48a8475f | 1759 | |
424dcc76 MH |
1760 | if (!refs) |
1761 | return -1; | |
1762 | ||
49e61479 | 1763 | if (!refs_resolve_ref_unsafe(refs, refname, 0, oid, &flags) || |
a98e6101 | 1764 | is_null_oid(oid)) |
424dcc76 MH |
1765 | return -1; |
1766 | return 0; | |
1767 | } | |
1768 | ||
0c064d90 | 1769 | struct ref_store_hash_entry |
7d4558c4 | 1770 | { |
e2b5038d | 1771 | struct hashmap_entry ent; |
7d4558c4 MH |
1772 | |
1773 | struct ref_store *refs; | |
1774 | ||
0c064d90 NTND |
1775 | /* NUL-terminated identifier of the ref store: */ |
1776 | char name[FLEX_ARRAY]; | |
7d4558c4 MH |
1777 | }; |
1778 | ||
7663cdc8 | 1779 | static int ref_store_hash_cmp(const void *unused_cmp_data, |
939af16e EW |
1780 | const struct hashmap_entry *eptr, |
1781 | const struct hashmap_entry *entry_or_key, | |
7d4558c4 MH |
1782 | const void *keydata) |
1783 | { | |
939af16e EW |
1784 | const struct ref_store_hash_entry *e1, *e2; |
1785 | const char *name; | |
1786 | ||
1787 | e1 = container_of(eptr, const struct ref_store_hash_entry, ent); | |
1788 | e2 = container_of(entry_or_key, const struct ref_store_hash_entry, ent); | |
1789 | name = keydata ? keydata : e2->name; | |
7d4558c4 | 1790 | |
0c064d90 | 1791 | return strcmp(e1->name, name); |
7d4558c4 MH |
1792 | } |
1793 | ||
0c064d90 NTND |
1794 | static struct ref_store_hash_entry *alloc_ref_store_hash_entry( |
1795 | const char *name, struct ref_store *refs) | |
7d4558c4 | 1796 | { |
0c064d90 | 1797 | struct ref_store_hash_entry *entry; |
7d4558c4 | 1798 | |
0c064d90 | 1799 | FLEX_ALLOC_STR(entry, name, name); |
d22245a2 | 1800 | hashmap_entry_init(&entry->ent, strhash(name)); |
7d4558c4 MH |
1801 | entry->refs = refs; |
1802 | return entry; | |
1803 | } | |
1804 | ||
7d4558c4 MH |
1805 | /* A hashmap of ref_stores, stored by submodule name: */ |
1806 | static struct hashmap submodule_ref_stores; | |
00eebe35 | 1807 | |
17eff96b NTND |
1808 | /* A hashmap of ref_stores, stored by worktree id: */ |
1809 | static struct hashmap worktree_ref_stores; | |
1810 | ||
c468da4e | 1811 | /* |
0c064d90 NTND |
1812 | * Look up a ref store by name. If that ref_store hasn't been |
1813 | * registered yet, return NULL. | |
c468da4e | 1814 | */ |
0c064d90 NTND |
1815 | static struct ref_store *lookup_ref_store_map(struct hashmap *map, |
1816 | const char *name) | |
00eebe35 | 1817 | { |
0c064d90 | 1818 | struct ref_store_hash_entry *entry; |
f23a4651 | 1819 | unsigned int hash; |
00eebe35 | 1820 | |
0c064d90 | 1821 | if (!map->tablesize) |
7d4558c4 MH |
1822 | /* It's initialized on demand in register_ref_store(). */ |
1823 | return NULL; | |
620a66b9 | 1824 | |
f23a4651 EW |
1825 | hash = strhash(name); |
1826 | entry = hashmap_get_entry_from_hash(map, hash, name, | |
1827 | struct ref_store_hash_entry, ent); | |
7d4558c4 | 1828 | return entry ? entry->refs : NULL; |
00eebe35 MH |
1829 | } |
1830 | ||
c468da4e MH |
1831 | /* |
1832 | * Create, record, and return a ref_store instance for the specified | |
5d0bc90e | 1833 | * gitdir. |
c468da4e | 1834 | */ |
9e7ec634 NTND |
1835 | static struct ref_store *ref_store_init(const char *gitdir, |
1836 | unsigned int flags) | |
00eebe35 MH |
1837 | { |
1838 | const char *be_name = "files"; | |
1839 | struct ref_storage_be *be = find_ref_storage_backend(be_name); | |
ba88add5 | 1840 | struct ref_store *refs; |
00eebe35 MH |
1841 | |
1842 | if (!be) | |
033abf97 | 1843 | BUG("reference backend %s is unknown", be_name); |
00eebe35 | 1844 | |
9e7ec634 | 1845 | refs = be->init(gitdir, flags); |
ba88add5 | 1846 | return refs; |
00eebe35 MH |
1847 | } |
1848 | ||
64a74161 | 1849 | struct ref_store *get_main_ref_store(struct repository *r) |
24c8407e | 1850 | { |
02204610 JK |
1851 | if (r->refs_private) |
1852 | return r->refs_private; | |
24c8407e | 1853 | |
2dc417ab JK |
1854 | if (!r->gitdir) |
1855 | BUG("attempting to get main_ref_store outside of repository"); | |
1856 | ||
02204610 JK |
1857 | r->refs_private = ref_store_init(r->gitdir, REF_STORE_ALL_CAPS); |
1858 | return r->refs_private; | |
378dc910 NTND |
1859 | } |
1860 | ||
1861 | /* | |
0c064d90 NTND |
1862 | * Associate a ref store with a name. It is a fatal error to call this |
1863 | * function twice for the same name. | |
378dc910 | 1864 | */ |
0c064d90 NTND |
1865 | static void register_ref_store_map(struct hashmap *map, |
1866 | const char *type, | |
1867 | struct ref_store *refs, | |
1868 | const char *name) | |
378dc910 | 1869 | { |
26b455f2 EW |
1870 | struct ref_store_hash_entry *entry; |
1871 | ||
0c064d90 | 1872 | if (!map->tablesize) |
7663cdc8 | 1873 | hashmap_init(map, ref_store_hash_cmp, NULL, 0); |
378dc910 | 1874 | |
26b455f2 EW |
1875 | entry = alloc_ref_store_hash_entry(name, refs); |
1876 | if (hashmap_put(map, &entry->ent)) | |
033abf97 | 1877 | BUG("%s ref_store '%s' initialized twice", type, name); |
24c8407e NTND |
1878 | } |
1879 | ||
18d0002d | 1880 | struct ref_store *get_submodule_ref_store(const char *submodule) |
00eebe35 | 1881 | { |
126c9e05 | 1882 | struct strbuf submodule_sb = STRBUF_INIT; |
00eebe35 | 1883 | struct ref_store *refs; |
29babbee NTND |
1884 | char *to_free = NULL; |
1885 | size_t len; | |
00eebe35 | 1886 | |
82a150f2 NTND |
1887 | if (!submodule) |
1888 | return NULL; | |
1889 | ||
873ea90d NTND |
1890 | len = strlen(submodule); |
1891 | while (len && is_dir_sep(submodule[len - 1])) | |
1892 | len--; | |
1893 | if (!len) | |
1894 | return NULL; | |
00eebe35 | 1895 | |
29babbee NTND |
1896 | if (submodule[len]) |
1897 | /* We need to strip off one or more trailing slashes */ | |
1898 | submodule = to_free = xmemdupz(submodule, len); | |
00eebe35 | 1899 | |
0c064d90 | 1900 | refs = lookup_ref_store_map(&submodule_ref_stores, submodule); |
126c9e05 | 1901 | if (refs) |
2c616c17 | 1902 | goto done; |
00eebe35 | 1903 | |
126c9e05 | 1904 | strbuf_addstr(&submodule_sb, submodule); |
2c616c17 NTND |
1905 | if (!is_nonbare_repository_dir(&submodule_sb)) |
1906 | goto done; | |
00eebe35 | 1907 | |
2c616c17 NTND |
1908 | if (submodule_to_gitdir(&submodule_sb, submodule)) |
1909 | goto done; | |
00eebe35 | 1910 | |
9e7ec634 NTND |
1911 | /* assume that add_submodule_odb() has been called */ |
1912 | refs = ref_store_init(submodule_sb.buf, | |
1913 | REF_STORE_READ | REF_STORE_ODB); | |
0c064d90 NTND |
1914 | register_ref_store_map(&submodule_ref_stores, "submodule", |
1915 | refs, submodule); | |
5d0bc90e | 1916 | |
2c616c17 | 1917 | done: |
5d0bc90e | 1918 | strbuf_release(&submodule_sb); |
29babbee NTND |
1919 | free(to_free); |
1920 | ||
00eebe35 MH |
1921 | return refs; |
1922 | } | |
1923 | ||
17eff96b NTND |
1924 | struct ref_store *get_worktree_ref_store(const struct worktree *wt) |
1925 | { | |
1926 | struct ref_store *refs; | |
1927 | const char *id; | |
1928 | ||
1929 | if (wt->is_current) | |
23a3f0cb | 1930 | return get_main_ref_store(the_repository); |
17eff96b NTND |
1931 | |
1932 | id = wt->id ? wt->id : "/"; | |
1933 | refs = lookup_ref_store_map(&worktree_ref_stores, id); | |
1934 | if (refs) | |
1935 | return refs; | |
1936 | ||
1937 | if (wt->id) | |
1938 | refs = ref_store_init(git_common_path("worktrees/%s", wt->id), | |
1939 | REF_STORE_ALL_CAPS); | |
1940 | else | |
1941 | refs = ref_store_init(get_git_common_dir(), | |
1942 | REF_STORE_ALL_CAPS); | |
1943 | ||
1944 | if (refs) | |
1945 | register_ref_store_map(&worktree_ref_stores, "worktree", | |
1946 | refs, id); | |
1947 | return refs; | |
1948 | } | |
1949 | ||
620a66b9 | 1950 | void base_ref_store_init(struct ref_store *refs, |
fbfd0a29 | 1951 | const struct ref_storage_be *be) |
00eebe35 | 1952 | { |
620a66b9 | 1953 | refs->be = be; |
00eebe35 | 1954 | } |
127b42a1 RS |
1955 | |
1956 | /* backend functions */ | |
7d2df051 | 1957 | int refs_pack_refs(struct ref_store *refs, unsigned int flags) |
8231527e | 1958 | { |
8231527e MH |
1959 | return refs->be->pack_refs(refs, flags); |
1960 | } | |
1961 | ||
7d2df051 | 1962 | int refs_peel_ref(struct ref_store *refs, const char *refname, |
b420d909 | 1963 | struct object_id *oid) |
7d2df051 | 1964 | { |
ba1c052f | 1965 | int flag; |
34c290a6 | 1966 | struct object_id base; |
ba1c052f MH |
1967 | |
1968 | if (current_ref_iter && current_ref_iter->refname == refname) { | |
1969 | struct object_id peeled; | |
1970 | ||
1971 | if (ref_iterator_peel(current_ref_iter, &peeled)) | |
1972 | return -1; | |
b420d909 | 1973 | oidcpy(oid, &peeled); |
ba1c052f MH |
1974 | return 0; |
1975 | } | |
1976 | ||
1977 | if (refs_read_ref_full(refs, refname, | |
34c290a6 | 1978 | RESOLVE_REF_READING, &base, &flag)) |
ba1c052f MH |
1979 | return -1; |
1980 | ||
ac2ed0d7 | 1981 | return peel_object(&base, oid); |
8231527e MH |
1982 | } |
1983 | ||
b420d909 | 1984 | int peel_ref(const char *refname, struct object_id *oid) |
bd427cf2 | 1985 | { |
23a3f0cb | 1986 | return refs_peel_ref(get_main_ref_store(the_repository), refname, oid); |
7d2df051 | 1987 | } |
bd427cf2 | 1988 | |
7d2df051 NTND |
1989 | int refs_create_symref(struct ref_store *refs, |
1990 | const char *ref_target, | |
1991 | const char *refs_heads_master, | |
1992 | const char *logmsg) | |
1993 | { | |
523fa69c JH |
1994 | char *msg; |
1995 | int retval; | |
1996 | ||
1997 | msg = normalize_reflog_message(logmsg); | |
1998 | retval = refs->be->create_symref(refs, ref_target, refs_heads_master, | |
1999 | msg); | |
2000 | free(msg); | |
2001 | return retval; | |
bd427cf2 MH |
2002 | } |
2003 | ||
284689ba MH |
2004 | int create_symref(const char *ref_target, const char *refs_heads_master, |
2005 | const char *logmsg) | |
2006 | { | |
23a3f0cb | 2007 | return refs_create_symref(get_main_ref_store(the_repository), ref_target, |
7d2df051 | 2008 | refs_heads_master, logmsg); |
284689ba MH |
2009 | } |
2010 | ||
2ced105c MH |
2011 | int ref_update_reject_duplicates(struct string_list *refnames, |
2012 | struct strbuf *err) | |
2013 | { | |
a552e50e | 2014 | size_t i, n = refnames->nr; |
2ced105c MH |
2015 | |
2016 | assert(err); | |
2017 | ||
8556f8d6 MH |
2018 | for (i = 1; i < n; i++) { |
2019 | int cmp = strcmp(refnames->items[i - 1].string, | |
2020 | refnames->items[i].string); | |
2021 | ||
2022 | if (!cmp) { | |
2ced105c | 2023 | strbuf_addf(err, |
661558f0 | 2024 | _("multiple updates for ref '%s' not allowed"), |
2ced105c MH |
2025 | refnames->items[i].string); |
2026 | return 1; | |
8556f8d6 | 2027 | } else if (cmp > 0) { |
033abf97 | 2028 | BUG("ref_update_reject_duplicates() received unsorted list"); |
2ced105c | 2029 | } |
8556f8d6 | 2030 | } |
2ced105c MH |
2031 | return 0; |
2032 | } | |
2033 | ||
67541597 PS |
2034 | static const char hook_not_found; |
2035 | static const char *hook; | |
2036 | ||
2037 | static int run_transaction_hook(struct ref_transaction *transaction, | |
2038 | const char *state) | |
2039 | { | |
2040 | struct child_process proc = CHILD_PROCESS_INIT; | |
2041 | struct strbuf buf = STRBUF_INIT; | |
2042 | int ret = 0, i; | |
2043 | ||
2044 | if (hook == &hook_not_found) | |
2045 | return ret; | |
2046 | if (!hook) | |
2047 | hook = find_hook("reference-transaction"); | |
2048 | if (!hook) { | |
2049 | hook = &hook_not_found; | |
2050 | return ret; | |
2051 | } | |
2052 | ||
c972bf4c | 2053 | strvec_pushl(&proc.args, hook, state, NULL); |
67541597 PS |
2054 | proc.in = -1; |
2055 | proc.stdout_to_stderr = 1; | |
2056 | proc.trace2_hook_name = "reference-transaction"; | |
2057 | ||
2058 | ret = start_command(&proc); | |
2059 | if (ret) | |
2060 | return ret; | |
2061 | ||
2062 | sigchain_push(SIGPIPE, SIG_IGN); | |
2063 | ||
2064 | for (i = 0; i < transaction->nr; i++) { | |
2065 | struct ref_update *update = transaction->updates[i]; | |
2066 | ||
2067 | strbuf_reset(&buf); | |
2068 | strbuf_addf(&buf, "%s %s %s\n", | |
2069 | oid_to_hex(&update->old_oid), | |
2070 | oid_to_hex(&update->new_oid), | |
2071 | update->refname); | |
2072 | ||
2073 | if (write_in_full(proc.in, buf.buf, buf.len) < 0) { | |
2074 | if (errno != EPIPE) | |
2075 | ret = -1; | |
2076 | break; | |
2077 | } | |
2078 | } | |
2079 | ||
2080 | close(proc.in); | |
2081 | sigchain_pop(SIGPIPE); | |
2082 | strbuf_release(&buf); | |
2083 | ||
2084 | ret |= finish_command(&proc); | |
2085 | return ret; | |
2086 | } | |
2087 | ||
30173b88 MH |
2088 | int ref_transaction_prepare(struct ref_transaction *transaction, |
2089 | struct strbuf *err) | |
127b42a1 | 2090 | { |
c0fe4e8b | 2091 | struct ref_store *refs = transaction->ref_store; |
67541597 | 2092 | int ret; |
127b42a1 | 2093 | |
8d4240d3 MH |
2094 | switch (transaction->state) { |
2095 | case REF_TRANSACTION_OPEN: | |
2096 | /* Good. */ | |
2097 | break; | |
30173b88 | 2098 | case REF_TRANSACTION_PREPARED: |
033abf97 | 2099 | BUG("prepare called twice on reference transaction"); |
30173b88 | 2100 | break; |
8d4240d3 | 2101 | case REF_TRANSACTION_CLOSED: |
033abf97 | 2102 | BUG("prepare called on a closed reference transaction"); |
8d4240d3 MH |
2103 | break; |
2104 | default: | |
033abf97 | 2105 | BUG("unexpected reference transaction state"); |
8d4240d3 MH |
2106 | break; |
2107 | } | |
2108 | ||
d8f4481c JK |
2109 | if (getenv(GIT_QUARANTINE_ENVIRONMENT)) { |
2110 | strbuf_addstr(err, | |
2111 | _("ref updates forbidden inside quarantine environment")); | |
2112 | return -1; | |
2113 | } | |
2114 | ||
67541597 PS |
2115 | ret = refs->be->transaction_prepare(refs, transaction, err); |
2116 | if (ret) | |
2117 | return ret; | |
2118 | ||
2119 | ret = run_transaction_hook(transaction, "prepared"); | |
2120 | if (ret) { | |
2121 | ref_transaction_abort(transaction, err); | |
2122 | die(_("ref updates aborted by hook")); | |
2123 | } | |
2124 | ||
2125 | return 0; | |
30173b88 MH |
2126 | } |
2127 | ||
2128 | int ref_transaction_abort(struct ref_transaction *transaction, | |
2129 | struct strbuf *err) | |
2130 | { | |
2131 | struct ref_store *refs = transaction->ref_store; | |
2132 | int ret = 0; | |
2133 | ||
2134 | switch (transaction->state) { | |
2135 | case REF_TRANSACTION_OPEN: | |
2136 | /* No need to abort explicitly. */ | |
2137 | break; | |
2138 | case REF_TRANSACTION_PREPARED: | |
2139 | ret = refs->be->transaction_abort(refs, transaction, err); | |
2140 | break; | |
2141 | case REF_TRANSACTION_CLOSED: | |
033abf97 | 2142 | BUG("abort called on a closed reference transaction"); |
30173b88 MH |
2143 | break; |
2144 | default: | |
033abf97 | 2145 | BUG("unexpected reference transaction state"); |
30173b88 MH |
2146 | break; |
2147 | } | |
2148 | ||
67541597 PS |
2149 | run_transaction_hook(transaction, "aborted"); |
2150 | ||
30173b88 MH |
2151 | ref_transaction_free(transaction); |
2152 | return ret; | |
2153 | } | |
2154 | ||
2155 | int ref_transaction_commit(struct ref_transaction *transaction, | |
2156 | struct strbuf *err) | |
2157 | { | |
2158 | struct ref_store *refs = transaction->ref_store; | |
2159 | int ret; | |
2160 | ||
2161 | switch (transaction->state) { | |
2162 | case REF_TRANSACTION_OPEN: | |
2163 | /* Need to prepare first. */ | |
2164 | ret = ref_transaction_prepare(transaction, err); | |
2165 | if (ret) | |
2166 | return ret; | |
2167 | break; | |
2168 | case REF_TRANSACTION_PREPARED: | |
2169 | /* Fall through to finish. */ | |
2170 | break; | |
2171 | case REF_TRANSACTION_CLOSED: | |
033abf97 | 2172 | BUG("commit called on a closed reference transaction"); |
30173b88 MH |
2173 | break; |
2174 | default: | |
033abf97 | 2175 | BUG("unexpected reference transaction state"); |
30173b88 MH |
2176 | break; |
2177 | } | |
2178 | ||
67541597 PS |
2179 | ret = refs->be->transaction_finish(refs, transaction, err); |
2180 | if (!ret) | |
2181 | run_transaction_hook(transaction, "committed"); | |
2182 | return ret; | |
127b42a1 | 2183 | } |
62665823 | 2184 | |
7d2df051 NTND |
2185 | int refs_verify_refname_available(struct ref_store *refs, |
2186 | const char *refname, | |
b05855b5 | 2187 | const struct string_list *extras, |
7d2df051 NTND |
2188 | const struct string_list *skip, |
2189 | struct strbuf *err) | |
62665823 | 2190 | { |
b05855b5 MH |
2191 | const char *slash; |
2192 | const char *extra_refname; | |
2193 | struct strbuf dirname = STRBUF_INIT; | |
2194 | struct strbuf referent = STRBUF_INIT; | |
2195 | struct object_id oid; | |
2196 | unsigned int type; | |
2197 | struct ref_iterator *iter; | |
2198 | int ok; | |
2199 | int ret = -1; | |
2200 | ||
2201 | /* | |
2202 | * For the sake of comments in this function, suppose that | |
2203 | * refname is "refs/foo/bar". | |
2204 | */ | |
2205 | ||
2206 | assert(err); | |
2207 | ||
2208 | strbuf_grow(&dirname, strlen(refname) + 1); | |
2209 | for (slash = strchr(refname, '/'); slash; slash = strchr(slash + 1, '/')) { | |
2210 | /* Expand dirname to the new prefix, not including the trailing slash: */ | |
2211 | strbuf_add(&dirname, refname + dirname.len, slash - refname - dirname.len); | |
2212 | ||
2213 | /* | |
2214 | * We are still at a leading dir of the refname (e.g., | |
2215 | * "refs/foo"; if there is a reference with that name, | |
2216 | * it is a conflict, *unless* it is in skip. | |
2217 | */ | |
2218 | if (skip && string_list_has_string(skip, dirname.buf)) | |
2219 | continue; | |
2220 | ||
99afe91a | 2221 | if (!refs_read_raw_ref(refs, dirname.buf, &oid, &referent, &type)) { |
661558f0 | 2222 | strbuf_addf(err, _("'%s' exists; cannot create '%s'"), |
b05855b5 MH |
2223 | dirname.buf, refname); |
2224 | goto cleanup; | |
2225 | } | |
2226 | ||
2227 | if (extras && string_list_has_string(extras, dirname.buf)) { | |
661558f0 | 2228 | strbuf_addf(err, _("cannot process '%s' and '%s' at the same time"), |
b05855b5 MH |
2229 | refname, dirname.buf); |
2230 | goto cleanup; | |
2231 | } | |
2232 | } | |
2233 | ||
2234 | /* | |
2235 | * We are at the leaf of our refname (e.g., "refs/foo/bar"). | |
2236 | * There is no point in searching for a reference with that | |
2237 | * name, because a refname isn't considered to conflict with | |
2238 | * itself. But we still need to check for references whose | |
2239 | * names are in the "refs/foo/bar/" namespace, because they | |
2240 | * *do* conflict. | |
2241 | */ | |
2242 | strbuf_addstr(&dirname, refname + dirname.len); | |
2243 | strbuf_addch(&dirname, '/'); | |
2244 | ||
2245 | iter = refs_ref_iterator_begin(refs, dirname.buf, 0, | |
2246 | DO_FOR_EACH_INCLUDE_BROKEN); | |
2247 | while ((ok = ref_iterator_advance(iter)) == ITER_OK) { | |
2248 | if (skip && | |
2249 | string_list_has_string(skip, iter->refname)) | |
2250 | continue; | |
2251 | ||
661558f0 | 2252 | strbuf_addf(err, _("'%s' exists; cannot create '%s'"), |
b05855b5 MH |
2253 | iter->refname, refname); |
2254 | ref_iterator_abort(iter); | |
2255 | goto cleanup; | |
2256 | } | |
2257 | ||
2258 | if (ok != ITER_DONE) | |
033abf97 | 2259 | BUG("error while iterating over references"); |
b05855b5 MH |
2260 | |
2261 | extra_refname = find_descendant_ref(dirname.buf, extras, skip); | |
2262 | if (extra_refname) | |
661558f0 | 2263 | strbuf_addf(err, _("cannot process '%s' and '%s' at the same time"), |
b05855b5 MH |
2264 | refname, extra_refname); |
2265 | else | |
2266 | ret = 0; | |
2267 | ||
2268 | cleanup: | |
2269 | strbuf_release(&referent); | |
2270 | strbuf_release(&dirname); | |
2271 | return ret; | |
62665823 | 2272 | } |
e3688bd6 | 2273 | |
7d2df051 | 2274 | int refs_for_each_reflog(struct ref_store *refs, each_ref_fn fn, void *cb_data) |
e3688bd6 | 2275 | { |
e3688bd6 | 2276 | struct ref_iterator *iter; |
4a6067cd | 2277 | struct do_for_each_ref_help hp = { fn, cb_data }; |
e3688bd6 DT |
2278 | |
2279 | iter = refs->be->reflog_iterator_begin(refs); | |
2280 | ||
4a6067cd SB |
2281 | return do_for_each_repo_ref_iterator(the_repository, iter, |
2282 | do_for_each_ref_helper, &hp); | |
e3688bd6 DT |
2283 | } |
2284 | ||
7d2df051 | 2285 | int for_each_reflog(each_ref_fn fn, void *cb_data) |
e3688bd6 | 2286 | { |
23a3f0cb | 2287 | return refs_for_each_reflog(get_main_ref_store(the_repository), fn, cb_data); |
7d2df051 | 2288 | } |
e3688bd6 | 2289 | |
7d2df051 NTND |
2290 | int refs_for_each_reflog_ent_reverse(struct ref_store *refs, |
2291 | const char *refname, | |
2292 | each_reflog_ent_fn fn, | |
2293 | void *cb_data) | |
2294 | { | |
e3688bd6 DT |
2295 | return refs->be->for_each_reflog_ent_reverse(refs, refname, |
2296 | fn, cb_data); | |
2297 | } | |
2298 | ||
7d2df051 NTND |
2299 | int for_each_reflog_ent_reverse(const char *refname, each_reflog_ent_fn fn, |
2300 | void *cb_data) | |
2301 | { | |
23a3f0cb | 2302 | return refs_for_each_reflog_ent_reverse(get_main_ref_store(the_repository), |
7d2df051 NTND |
2303 | refname, fn, cb_data); |
2304 | } | |
2305 | ||
2306 | int refs_for_each_reflog_ent(struct ref_store *refs, const char *refname, | |
2307 | each_reflog_ent_fn fn, void *cb_data) | |
2308 | { | |
2309 | return refs->be->for_each_reflog_ent(refs, refname, fn, cb_data); | |
2310 | } | |
2311 | ||
e3688bd6 DT |
2312 | int for_each_reflog_ent(const char *refname, each_reflog_ent_fn fn, |
2313 | void *cb_data) | |
2314 | { | |
23a3f0cb | 2315 | return refs_for_each_reflog_ent(get_main_ref_store(the_repository), refname, |
7d2df051 NTND |
2316 | fn, cb_data); |
2317 | } | |
e3688bd6 | 2318 | |
7d2df051 NTND |
2319 | int refs_reflog_exists(struct ref_store *refs, const char *refname) |
2320 | { | |
2321 | return refs->be->reflog_exists(refs, refname); | |
e3688bd6 DT |
2322 | } |
2323 | ||
2324 | int reflog_exists(const char *refname) | |
2325 | { | |
23a3f0cb | 2326 | return refs_reflog_exists(get_main_ref_store(the_repository), refname); |
7d2df051 | 2327 | } |
e3688bd6 | 2328 | |
7d2df051 NTND |
2329 | int refs_create_reflog(struct ref_store *refs, const char *refname, |
2330 | int force_create, struct strbuf *err) | |
2331 | { | |
2332 | return refs->be->create_reflog(refs, refname, force_create, err); | |
e3688bd6 DT |
2333 | } |
2334 | ||
2335 | int safe_create_reflog(const char *refname, int force_create, | |
2336 | struct strbuf *err) | |
2337 | { | |
23a3f0cb | 2338 | return refs_create_reflog(get_main_ref_store(the_repository), refname, |
7d2df051 NTND |
2339 | force_create, err); |
2340 | } | |
e3688bd6 | 2341 | |
7d2df051 NTND |
2342 | int refs_delete_reflog(struct ref_store *refs, const char *refname) |
2343 | { | |
2344 | return refs->be->delete_reflog(refs, refname); | |
e3688bd6 DT |
2345 | } |
2346 | ||
2347 | int delete_reflog(const char *refname) | |
2348 | { | |
23a3f0cb | 2349 | return refs_delete_reflog(get_main_ref_store(the_repository), refname); |
7d2df051 | 2350 | } |
e3688bd6 | 2351 | |
7d2df051 | 2352 | int refs_reflog_expire(struct ref_store *refs, |
0155f710 | 2353 | const char *refname, const struct object_id *oid, |
7d2df051 NTND |
2354 | unsigned int flags, |
2355 | reflog_expiry_prepare_fn prepare_fn, | |
2356 | reflog_expiry_should_prune_fn should_prune_fn, | |
2357 | reflog_expiry_cleanup_fn cleanup_fn, | |
2358 | void *policy_cb_data) | |
2359 | { | |
0155f710 | 2360 | return refs->be->reflog_expire(refs, refname, oid, flags, |
7d2df051 NTND |
2361 | prepare_fn, should_prune_fn, |
2362 | cleanup_fn, policy_cb_data); | |
e3688bd6 DT |
2363 | } |
2364 | ||
0155f710 | 2365 | int reflog_expire(const char *refname, const struct object_id *oid, |
e3688bd6 DT |
2366 | unsigned int flags, |
2367 | reflog_expiry_prepare_fn prepare_fn, | |
2368 | reflog_expiry_should_prune_fn should_prune_fn, | |
2369 | reflog_expiry_cleanup_fn cleanup_fn, | |
2370 | void *policy_cb_data) | |
2371 | { | |
23a3f0cb | 2372 | return refs_reflog_expire(get_main_ref_store(the_repository), |
0155f710 | 2373 | refname, oid, flags, |
7d2df051 NTND |
2374 | prepare_fn, should_prune_fn, |
2375 | cleanup_fn, policy_cb_data); | |
e3688bd6 | 2376 | } |
fc681463 DT |
2377 | |
2378 | int initial_ref_transaction_commit(struct ref_transaction *transaction, | |
2379 | struct strbuf *err) | |
2380 | { | |
c0fe4e8b | 2381 | struct ref_store *refs = transaction->ref_store; |
fc681463 DT |
2382 | |
2383 | return refs->be->initial_transaction_commit(refs, transaction, err); | |
2384 | } | |
a27dcf89 | 2385 | |
523fa69c | 2386 | int refs_delete_refs(struct ref_store *refs, const char *logmsg, |
64da4199 | 2387 | struct string_list *refnames, unsigned int flags) |
a27dcf89 | 2388 | { |
523fa69c JH |
2389 | char *msg; |
2390 | int retval; | |
2391 | ||
2392 | msg = normalize_reflog_message(logmsg); | |
2393 | retval = refs->be->delete_refs(refs, msg, refnames, flags); | |
2394 | free(msg); | |
2395 | return retval; | |
a27dcf89 | 2396 | } |
9b6b40d9 | 2397 | |
64da4199 MH |
2398 | int delete_refs(const char *msg, struct string_list *refnames, |
2399 | unsigned int flags) | |
9b6b40d9 | 2400 | { |
23a3f0cb | 2401 | return refs_delete_refs(get_main_ref_store(the_repository), msg, refnames, flags); |
7d2df051 | 2402 | } |
9b6b40d9 | 2403 | |
7d2df051 NTND |
2404 | int refs_rename_ref(struct ref_store *refs, const char *oldref, |
2405 | const char *newref, const char *logmsg) | |
2406 | { | |
523fa69c JH |
2407 | char *msg; |
2408 | int retval; | |
2409 | ||
2410 | msg = normalize_reflog_message(logmsg); | |
2411 | retval = refs->be->rename_ref(refs, oldref, newref, msg); | |
2412 | free(msg); | |
2413 | return retval; | |
9b6b40d9 | 2414 | } |
7d2df051 NTND |
2415 | |
2416 | int rename_ref(const char *oldref, const char *newref, const char *logmsg) | |
2417 | { | |
23a3f0cb | 2418 | return refs_rename_ref(get_main_ref_store(the_repository), oldref, newref, logmsg); |
7d2df051 | 2419 | } |
52d59cc6 SD |
2420 | |
2421 | int refs_copy_existing_ref(struct ref_store *refs, const char *oldref, | |
2422 | const char *newref, const char *logmsg) | |
2423 | { | |
523fa69c JH |
2424 | char *msg; |
2425 | int retval; | |
2426 | ||
2427 | msg = normalize_reflog_message(logmsg); | |
2428 | retval = refs->be->copy_ref(refs, oldref, newref, msg); | |
2429 | free(msg); | |
2430 | return retval; | |
52d59cc6 SD |
2431 | } |
2432 | ||
2433 | int copy_existing_ref(const char *oldref, const char *newref, const char *logmsg) | |
2434 | { | |
23a3f0cb | 2435 | return refs_copy_existing_ref(get_main_ref_store(the_repository), oldref, newref, logmsg); |
52d59cc6 | 2436 | } |