2 5d56da81 2019-01-13 stsp * Copyright (c) 2018, 2019 Stefan Sperling <stsp@openbsd.org>
4 5261c201 2018-04-01 stsp * Permission to use, copy, modify, and distribute this software for any
5 5261c201 2018-04-01 stsp * purpose with or without fee is hereby granted, provided that the above
6 5261c201 2018-04-01 stsp * copyright notice and this permission notice appear in all copies.
8 5261c201 2018-04-01 stsp * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 5261c201 2018-04-01 stsp * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 5261c201 2018-04-01 stsp * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 5261c201 2018-04-01 stsp * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 5261c201 2018-04-01 stsp * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 5261c201 2018-04-01 stsp * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 5261c201 2018-04-01 stsp * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 5261c201 2018-04-01 stsp #include <sys/types.h>
18 5261c201 2018-04-01 stsp #include <sys/queue.h>
20 a04f49d2 2019-02-04 stsp #include <dirent.h>
21 5261c201 2018-04-01 stsp #include <sha1.h>
22 5261c201 2018-04-01 stsp #include <stdio.h>
23 5261c201 2018-04-01 stsp #include <stdlib.h>
24 5261c201 2018-04-01 stsp #include <string.h>
25 5261c201 2018-04-01 stsp #include <util.h>
26 5261c201 2018-04-01 stsp #include <zlib.h>
27 788c352e 2018-06-16 stsp #include <time.h>
29 5261c201 2018-04-01 stsp #include "got_error.h"
30 5261c201 2018-04-01 stsp #include "got_object.h"
31 5261c201 2018-04-01 stsp #include "got_repository.h"
32 5261c201 2018-04-01 stsp #include "got_reference.h"
34 5261c201 2018-04-01 stsp #include "got_lib_sha1.h"
35 5261c201 2018-04-01 stsp #include "got_lib_path.h"
36 5261c201 2018-04-01 stsp #include "got_lib_delta.h"
37 63581804 2018-07-09 stsp #include "got_lib_inflate.h"
38 5261c201 2018-04-01 stsp #include "got_lib_object.h"
40 fb79db15 2019-02-01 stsp #ifndef nitems
41 fb79db15 2019-02-01 stsp #define nitems(_a) (sizeof(_a) / sizeof((_a)[0]))
44 d1f2edc9 2018-06-13 stsp #define GOT_REF_HEADS "heads"
45 d1f2edc9 2018-06-13 stsp #define GOT_REF_TAGS "tags"
46 d1f2edc9 2018-06-13 stsp #define GOT_REF_REMOTES "remotes"
48 5261c201 2018-04-01 stsp /* A symbolic reference. */
49 5261c201 2018-04-01 stsp struct got_symref {
54 5261c201 2018-04-01 stsp /* A non-symbolic reference (there is no better designation). */
55 5261c201 2018-04-01 stsp struct got_ref {
57 5261c201 2018-04-01 stsp u_int8_t sha1[SHA1_DIGEST_LENGTH];
60 5261c201 2018-04-01 stsp /* A reference which points to an arbitrary object. */
61 5261c201 2018-04-01 stsp struct got_reference {
62 5261c201 2018-04-01 stsp unsigned int flags;
63 5261c201 2018-04-01 stsp #define GOT_REF_IS_SYMBOLIC 0x01
66 5261c201 2018-04-01 stsp struct got_ref ref;
67 5261c201 2018-04-01 stsp struct got_symref symref;
71 5261c201 2018-04-01 stsp static const struct got_error *
72 5261c201 2018-04-01 stsp parse_symref(struct got_reference **ref, const char *name, const char *line)
74 5261c201 2018-04-01 stsp struct got_symref *symref;
75 5261c201 2018-04-01 stsp char *symref_name;
76 5261c201 2018-04-01 stsp char *symref_ref;
78 5261c201 2018-04-01 stsp if (line[0] == '\0')
79 30c0868d 2019-02-03 stsp return got_error(GOT_ERR_BAD_REF_DATA);
81 5261c201 2018-04-01 stsp symref_name = strdup(name);
82 5261c201 2018-04-01 stsp if (symref_name == NULL)
83 5261c201 2018-04-01 stsp return got_error_from_errno();
84 5261c201 2018-04-01 stsp symref_ref = strdup(line);
85 5261c201 2018-04-01 stsp if (symref_ref == NULL) {
86 5261c201 2018-04-01 stsp const struct got_error *err = got_error_from_errno();
87 5261c201 2018-04-01 stsp free(symref_name);
91 5261c201 2018-04-01 stsp *ref = calloc(1, sizeof(**ref));
92 5261c201 2018-04-01 stsp if (*ref == NULL)
93 5261c201 2018-04-01 stsp return got_error_from_errno();
94 5261c201 2018-04-01 stsp (*ref)->flags |= GOT_REF_IS_SYMBOLIC;
95 5261c201 2018-04-01 stsp symref = &((*ref)->ref.symref);
96 5261c201 2018-04-01 stsp symref->name = symref_name;
97 5261c201 2018-04-01 stsp symref->ref = symref_ref;
98 5261c201 2018-04-01 stsp return NULL;
101 5261c201 2018-04-01 stsp static const struct got_error *
102 5261c201 2018-04-01 stsp parse_ref_line(struct got_reference **ref, const char *name, const char *line)
104 5261c201 2018-04-01 stsp uint8_t digest[SHA1_DIGEST_LENGTH];
105 5261c201 2018-04-01 stsp char *ref_name;
107 5261c201 2018-04-01 stsp if (strncmp(line, "ref: ", 5) == 0) {
109 5261c201 2018-04-01 stsp return parse_symref(ref, name, line);
112 5261c201 2018-04-01 stsp ref_name = strdup(name);
113 5261c201 2018-04-01 stsp if (ref_name == NULL)
114 5261c201 2018-04-01 stsp return got_error_from_errno();
116 5261c201 2018-04-01 stsp if (!got_parse_sha1_digest(digest, line))
117 30c0868d 2019-02-03 stsp return got_error(GOT_ERR_BAD_REF_DATA);
119 5261c201 2018-04-01 stsp *ref = calloc(1, sizeof(**ref));
120 5261c201 2018-04-01 stsp if (*ref == NULL)
121 5261c201 2018-04-01 stsp return got_error_from_errno();
122 5261c201 2018-04-01 stsp (*ref)->ref.ref.name = ref_name;
123 5261c201 2018-04-01 stsp memcpy(&(*ref)->ref.ref.sha1, digest, SHA1_DIGEST_LENGTH);
124 5261c201 2018-04-01 stsp return NULL;
127 5261c201 2018-04-01 stsp static const struct got_error *
128 5261c201 2018-04-01 stsp parse_ref_file(struct got_reference **ref, const char *name,
129 5261c201 2018-04-01 stsp const char *abspath)
131 5261c201 2018-04-01 stsp const struct got_error *err = NULL;
132 5261c201 2018-04-01 stsp FILE *f = fopen(abspath, "rb");
133 5261c201 2018-04-01 stsp char *line;
134 5261c201 2018-04-01 stsp size_t len;
135 5261c201 2018-04-01 stsp const char delim[3] = {'\0', '\0', '\0'};
137 5261c201 2018-04-01 stsp if (f == NULL)
138 1e37702e 2019-02-04 stsp return NULL;
140 5261c201 2018-04-01 stsp line = fparseln(f, &len, NULL, delim, 0);
141 5261c201 2018-04-01 stsp if (line == NULL) {
142 30c0868d 2019-02-03 stsp err = got_error(GOT_ERR_BAD_REF_DATA);
146 5261c201 2018-04-01 stsp err = parse_ref_line(ref, name, line);
148 5261c201 2018-04-01 stsp free(line);
150 5261c201 2018-04-01 stsp return err;
154 c5f754cc 2019-02-01 stsp is_well_known_ref(const char *refname)
156 c5f754cc 2019-02-01 stsp return (strcmp(refname, GOT_REF_HEAD) == 0 ||
157 5261c201 2018-04-01 stsp strcmp(refname, GOT_REF_ORIG_HEAD) == 0 ||
158 5261c201 2018-04-01 stsp strcmp(refname, GOT_REF_MERGE_HEAD) == 0 ||
159 c5f754cc 2019-02-01 stsp strcmp(refname, GOT_REF_FETCH_HEAD) == 0);
162 c5f754cc 2019-02-01 stsp static char *
163 c5f754cc 2019-02-01 stsp get_refs_dir_path(struct got_repository *repo, const char *refname)
165 c5f754cc 2019-02-01 stsp if (is_well_known_ref(refname) || strncmp(refname, "refs/", 5) == 0)
166 6e9da951 2019-01-06 stsp return strdup(got_repo_get_path_git_dir(repo));
168 5261c201 2018-04-01 stsp return got_repo_get_path_refs(repo);
171 d1f2edc9 2018-06-13 stsp static const struct got_error *
172 fb79db15 2019-02-01 stsp parse_packed_ref_line(struct got_reference **ref, const char *abs_refname,
173 fb79db15 2019-02-01 stsp const char *line)
175 fb79db15 2019-02-01 stsp uint8_t digest[SHA1_DIGEST_LENGTH];
176 fb79db15 2019-02-01 stsp char *name;
178 fb79db15 2019-02-01 stsp *ref = NULL;
180 532920c8 2019-02-01 stsp if (line[0] == '#' || line[0] == '^')
181 fb79db15 2019-02-01 stsp return NULL;
183 fb79db15 2019-02-01 stsp if (!got_parse_sha1_digest(digest, line))
184 30c0868d 2019-02-03 stsp return got_error(GOT_ERR_BAD_REF_DATA);
186 199a4027 2019-02-02 stsp if (abs_refname) {
187 199a4027 2019-02-02 stsp if (strcmp(line + SHA1_DIGEST_STRING_LENGTH, abs_refname) != 0)
188 199a4027 2019-02-02 stsp return NULL;
190 199a4027 2019-02-02 stsp name = strdup(abs_refname);
191 199a4027 2019-02-02 stsp if (name == NULL)
192 199a4027 2019-02-02 stsp return got_error_from_errno();
194 199a4027 2019-02-02 stsp name = strdup(line + SHA1_DIGEST_STRING_LENGTH);
196 fb79db15 2019-02-01 stsp *ref = calloc(1, sizeof(**ref));
197 fb79db15 2019-02-01 stsp if (*ref == NULL)
198 fb79db15 2019-02-01 stsp return got_error_from_errno();
199 fb79db15 2019-02-01 stsp (*ref)->ref.ref.name = name;;
200 fb79db15 2019-02-01 stsp memcpy(&(*ref)->ref.ref.sha1, digest, SHA1_DIGEST_LENGTH);
201 fb79db15 2019-02-01 stsp return NULL;
204 fb79db15 2019-02-01 stsp static const struct got_error *
205 0dec1cc0 2019-02-01 stsp open_packed_ref(struct got_reference **ref, FILE *f, const char **subdirs,
206 0dec1cc0 2019-02-01 stsp int nsubdirs, const char *refname)
208 fb79db15 2019-02-01 stsp const struct got_error *err = NULL;
209 fb79db15 2019-02-01 stsp char *abs_refname;
210 fb79db15 2019-02-01 stsp char *line;
211 fb79db15 2019-02-01 stsp size_t len;
212 fb79db15 2019-02-01 stsp const char delim[3] = {'\0', '\0', '\0'};
213 0dec1cc0 2019-02-01 stsp int i, ref_is_absolute = (strncmp(refname, "refs/", 5) == 0);
215 1e37702e 2019-02-04 stsp *ref = NULL;
217 0dec1cc0 2019-02-01 stsp if (ref_is_absolute)
218 0dec1cc0 2019-02-01 stsp abs_refname = (char *)refname;
220 fb79db15 2019-02-01 stsp line = fparseln(f, &len, NULL, delim, 0);
221 1e37702e 2019-02-04 stsp if (line == NULL)
223 0dec1cc0 2019-02-01 stsp for (i = 0; i < nsubdirs; i++) {
224 0dec1cc0 2019-02-01 stsp if (!ref_is_absolute &&
225 0dec1cc0 2019-02-01 stsp asprintf(&abs_refname, "refs/%s/%s", subdirs[i],
226 0dec1cc0 2019-02-01 stsp refname) == -1)
227 0dec1cc0 2019-02-01 stsp return got_error_from_errno();
228 0dec1cc0 2019-02-01 stsp err = parse_packed_ref_line(ref, abs_refname, line);
229 0dec1cc0 2019-02-01 stsp if (!ref_is_absolute)
230 0dec1cc0 2019-02-01 stsp free(abs_refname);
231 532920c8 2019-02-01 stsp if (err || *ref != NULL)
234 fb79db15 2019-02-01 stsp free(line);
237 fb79db15 2019-02-01 stsp } while (*ref == NULL);
239 fb79db15 2019-02-01 stsp return err;
242 fb79db15 2019-02-01 stsp static const struct got_error *
243 d1f2edc9 2018-06-13 stsp open_ref(struct got_reference **ref, const char *path_refs, const char *subdir,
244 a04f49d2 2019-02-04 stsp const char *name)
246 d1f2edc9 2018-06-13 stsp const struct got_error *err = NULL;
247 a04f49d2 2019-02-04 stsp char *path = NULL;
248 a04f49d2 2019-02-04 stsp char *normpath = NULL;
249 a04f49d2 2019-02-04 stsp char *absname = NULL;
250 a04f49d2 2019-02-04 stsp int ref_is_absolute = (strncmp(name, "refs/", 5) == 0);
251 a04f49d2 2019-02-04 stsp int ref_is_well_known = is_well_known_ref(name);
253 1e37702e 2019-02-04 stsp *ref = NULL;
255 a04f49d2 2019-02-04 stsp if (ref_is_absolute || ref_is_well_known) {
256 a04f49d2 2019-02-04 stsp if (asprintf(&path, "%s/%s", path_refs, name) == -1)
257 a04f49d2 2019-02-04 stsp return got_error_from_errno();
258 a04f49d2 2019-02-04 stsp absname = (char *)name;
260 a04f49d2 2019-02-04 stsp if (asprintf(&path, "%s/%s/%s", path_refs, subdir, name) == -1)
261 a04f49d2 2019-02-04 stsp return got_error_from_errno();
263 a04f49d2 2019-02-04 stsp if (asprintf(&absname, "refs/%s/%s", subdir, name) == -1) {
264 a04f49d2 2019-02-04 stsp err = got_error_from_errno();
269 a04f49d2 2019-02-04 stsp normpath = got_path_normalize(path);
270 d1f2edc9 2018-06-13 stsp if (normpath == NULL) {
271 30c0868d 2019-02-03 stsp err = got_error_from_errno();
275 a04f49d2 2019-02-04 stsp err = parse_ref_file(ref, absname, normpath);
277 a04f49d2 2019-02-04 stsp if (!ref_is_absolute && !ref_is_well_known)
278 a04f49d2 2019-02-04 stsp free(absname);
279 a04f49d2 2019-02-04 stsp free(path);
280 d1f2edc9 2018-06-13 stsp free(normpath);
281 d1f2edc9 2018-06-13 stsp return err;
284 5261c201 2018-04-01 stsp const struct got_error *
285 5261c201 2018-04-01 stsp got_ref_open(struct got_reference **ref, struct got_repository *repo,
286 5261c201 2018-04-01 stsp const char *refname)
288 5261c201 2018-04-01 stsp const struct got_error *err = NULL;
289 c5f754cc 2019-02-01 stsp char *path_refs = NULL;
290 fb79db15 2019-02-01 stsp const char *subdirs[] = {
291 fb79db15 2019-02-01 stsp GOT_REF_HEADS, GOT_REF_TAGS, GOT_REF_REMOTES
293 c5f754cc 2019-02-01 stsp int i, well_known = is_well_known_ref(refname);
295 1e37702e 2019-02-04 stsp *ref = NULL;
297 c5f754cc 2019-02-01 stsp if (!well_known) {
298 c5f754cc 2019-02-01 stsp char *packed_refs_path;
301 c5f754cc 2019-02-01 stsp packed_refs_path = got_repo_get_path_packed_refs(repo);
302 c5f754cc 2019-02-01 stsp if (packed_refs_path == NULL)
303 c5f754cc 2019-02-01 stsp return got_error_from_errno();
305 c5f754cc 2019-02-01 stsp f = fopen(packed_refs_path, "rb");
306 c5f754cc 2019-02-01 stsp free(packed_refs_path);
307 c5f754cc 2019-02-01 stsp if (f != NULL) {
308 0dec1cc0 2019-02-01 stsp err = open_packed_ref(ref, f, subdirs, nitems(subdirs),
311 1e37702e 2019-02-04 stsp if (err || *ref)
316 fb79db15 2019-02-01 stsp path_refs = get_refs_dir_path(repo, refname);
317 5261c201 2018-04-01 stsp if (path_refs == NULL) {
318 5261c201 2018-04-01 stsp err = got_error_from_errno();
322 c5f754cc 2019-02-01 stsp if (!well_known) {
323 c5f754cc 2019-02-01 stsp for (i = 0; i < nitems(subdirs); i++) {
324 c5f754cc 2019-02-01 stsp err = open_ref(ref, path_refs, subdirs[i], refname);
325 1e37702e 2019-02-04 stsp if (err || *ref)
330 fb79db15 2019-02-01 stsp err = open_ref(ref, path_refs, "", refname);
333 1e37702e 2019-02-04 stsp if (*ref == NULL)
334 1e37702e 2019-02-04 stsp err = got_error_not_ref(refname);
336 5261c201 2018-04-01 stsp free(path_refs);
337 5261c201 2018-04-01 stsp return err;
341 5261c201 2018-04-01 stsp got_ref_close(struct got_reference *ref)
343 5261c201 2018-04-01 stsp if (ref->flags & GOT_REF_IS_SYMBOLIC)
344 5261c201 2018-04-01 stsp free(ref->ref.symref.name);
346 5261c201 2018-04-01 stsp free(ref->ref.ref.name);
350 5261c201 2018-04-01 stsp struct got_reference *
351 5261c201 2018-04-01 stsp got_ref_dup(struct got_reference *ref)
353 5261c201 2018-04-01 stsp struct got_reference *ret;
355 5261c201 2018-04-01 stsp ret = calloc(1, sizeof(*ret));
356 5261c201 2018-04-01 stsp if (ret == NULL)
357 5261c201 2018-04-01 stsp return NULL;
359 5261c201 2018-04-01 stsp ret->flags = ref->flags;
360 5261c201 2018-04-01 stsp if (ref->flags & GOT_REF_IS_SYMBOLIC) {
361 5261c201 2018-04-01 stsp ret->ref.symref.name = strdup(ref->ref.symref.name);
362 5261c201 2018-04-01 stsp if (ret->ref.symref.name == NULL) {
364 5261c201 2018-04-01 stsp return NULL;
366 5261c201 2018-04-01 stsp ret->ref.symref.ref = strdup(ref->ref.symref.ref);
367 5261c201 2018-04-01 stsp if (ret->ref.symref.ref == NULL) {
368 5261c201 2018-04-01 stsp free(ret->ref.symref.name);
370 5261c201 2018-04-01 stsp return NULL;
373 5261c201 2018-04-01 stsp ref->ref.ref.name = strdup(ref->ref.ref.name);
374 5261c201 2018-04-01 stsp if (ref->ref.ref.name == NULL) {
376 5261c201 2018-04-01 stsp return NULL;
378 5261c201 2018-04-01 stsp memcpy(ret->ref.ref.sha1, ref->ref.ref.sha1,
379 5261c201 2018-04-01 stsp SHA1_DIGEST_LENGTH);
382 5261c201 2018-04-01 stsp return ret;
385 5261c201 2018-04-01 stsp static const struct got_error *
386 5261c201 2018-04-01 stsp resolve_symbolic_ref(struct got_reference **resolved,
387 5261c201 2018-04-01 stsp struct got_repository *repo, struct got_reference *ref)
389 5261c201 2018-04-01 stsp struct got_reference *nextref;
390 5261c201 2018-04-01 stsp const struct got_error *err;
392 5261c201 2018-04-01 stsp err = got_ref_open(&nextref, repo, ref->ref.symref.ref);
394 5261c201 2018-04-01 stsp return err;
396 5261c201 2018-04-01 stsp if (nextref->flags & GOT_REF_IS_SYMBOLIC)
397 5261c201 2018-04-01 stsp err = resolve_symbolic_ref(resolved, repo, nextref);
399 5261c201 2018-04-01 stsp *resolved = got_ref_dup(nextref);
401 5261c201 2018-04-01 stsp got_ref_close(nextref);
402 5261c201 2018-04-01 stsp return err;
405 5261c201 2018-04-01 stsp const struct got_error *
406 5261c201 2018-04-01 stsp got_ref_resolve(struct got_object_id **id, struct got_repository *repo,
407 5261c201 2018-04-01 stsp struct got_reference *ref)
409 5261c201 2018-04-01 stsp const struct got_error *err;
411 5261c201 2018-04-01 stsp if (ref->flags & GOT_REF_IS_SYMBOLIC) {
412 5261c201 2018-04-01 stsp struct got_reference *resolved = NULL;
413 5261c201 2018-04-01 stsp err = resolve_symbolic_ref(&resolved, repo, ref);
414 5261c201 2018-04-01 stsp if (err == NULL)
415 5261c201 2018-04-01 stsp err = got_ref_resolve(id, repo, resolved);
416 5261c201 2018-04-01 stsp free(resolved);
417 5261c201 2018-04-01 stsp return err;
420 5261c201 2018-04-01 stsp *id = calloc(1, sizeof(**id));
421 5261c201 2018-04-01 stsp if (*id == NULL)
422 5261c201 2018-04-01 stsp return got_error_from_errno();
423 5261c201 2018-04-01 stsp memcpy((*id)->sha1, ref->ref.ref.sha1, SHA1_DIGEST_LENGTH);
424 5261c201 2018-04-01 stsp return NULL;
428 5261c201 2018-04-01 stsp got_ref_to_str(struct got_reference *ref)
432 271d2a38 2018-12-25 stsp if (ref->flags & GOT_REF_IS_SYMBOLIC)
433 271d2a38 2018-12-25 stsp return strdup(ref->ref.symref.ref);
435 271d2a38 2018-12-25 stsp str = malloc(SHA1_DIGEST_STRING_LENGTH);
436 271d2a38 2018-12-25 stsp if (str == NULL)
437 271d2a38 2018-12-25 stsp return NULL;
439 271d2a38 2018-12-25 stsp if (got_sha1_digest_to_str(ref->ref.ref.sha1, str,
440 271d2a38 2018-12-25 stsp SHA1_DIGEST_STRING_LENGTH) == NULL) {
442 271d2a38 2018-12-25 stsp return NULL;
445 5261c201 2018-04-01 stsp return str;
448 0bd18d37 2019-02-01 stsp const char *
449 0bd18d37 2019-02-01 stsp got_ref_get_name(struct got_reference *ref)
451 0bd18d37 2019-02-01 stsp if (ref->flags & GOT_REF_IS_SYMBOLIC)
452 0bd18d37 2019-02-01 stsp return ref->ref.symref.name;
454 0bd18d37 2019-02-01 stsp return ref->ref.ref.name;
457 199a4027 2019-02-02 stsp static const struct got_error *
458 29b5c214 2019-02-04 stsp insert_ref(struct got_reflist_head *refs, struct got_reference *ref,
459 199a4027 2019-02-02 stsp struct got_repository *repo)
461 199a4027 2019-02-02 stsp const struct got_error *err;
462 199a4027 2019-02-02 stsp struct got_object_id *id;
463 e397b6db 2019-02-04 stsp struct got_reflist_entry *re, *prev = NULL;
467 29b5c214 2019-02-04 stsp * We must de-duplicate entries on insert because packed-refs may
468 29b5c214 2019-02-04 stsp * contain redundant entries. On-disk refs take precedence.
469 29b5c214 2019-02-04 stsp * This code assumes that on-disk revs are read before packed-refs.
470 e397b6db 2019-02-04 stsp * We're iterating the list anyway, so insert elements sorted by name.
472 e397b6db 2019-02-04 stsp SIMPLEQ_FOREACH(re, refs, entry) {
473 e397b6db 2019-02-04 stsp cmp = strcmp(got_ref_get_name(re->ref), got_ref_get_name(ref));
474 e397b6db 2019-02-04 stsp if (cmp == 0) {
476 29b5c214 2019-02-04 stsp return NULL;
477 e397b6db 2019-02-04 stsp } else if (cmp > 0)
483 199a4027 2019-02-02 stsp err = got_ref_resolve(&id, repo, ref);
485 199a4027 2019-02-02 stsp return err;
486 e397b6db 2019-02-04 stsp re = malloc(sizeof(*re));
487 e397b6db 2019-02-04 stsp if (re == NULL)
488 199a4027 2019-02-02 stsp return got_error_from_errno();
489 e397b6db 2019-02-04 stsp re->ref = ref;
490 e397b6db 2019-02-04 stsp re->id = id;
492 e397b6db 2019-02-04 stsp SIMPLEQ_INSERT_AFTER(refs, prev, re, entry);
494 e397b6db 2019-02-04 stsp SIMPLEQ_INSERT_HEAD(refs, re, entry);
496 199a4027 2019-02-02 stsp return NULL;
499 a04f49d2 2019-02-04 stsp static const struct got_error *
500 29b5c214 2019-02-04 stsp gather_on_disk_refs(struct got_reflist_head *refs, const char *path_refs,
501 a04f49d2 2019-02-04 stsp const char *subdir, struct got_repository *repo)
503 a04f49d2 2019-02-04 stsp const struct got_error *err = NULL;
504 a04f49d2 2019-02-04 stsp DIR *d = NULL;
505 a04f49d2 2019-02-04 stsp char *path_subdir;
507 a04f49d2 2019-02-04 stsp if (asprintf(&path_subdir, "%s/%s", path_refs, subdir) == -1)
508 a04f49d2 2019-02-04 stsp return got_error_from_errno();
510 a04f49d2 2019-02-04 stsp d = opendir(path_subdir);
511 a04f49d2 2019-02-04 stsp if (d == NULL)
514 a04f49d2 2019-02-04 stsp while (1) {
515 a04f49d2 2019-02-04 stsp struct dirent *dent;
516 a04f49d2 2019-02-04 stsp struct got_reference *ref;
517 a04f49d2 2019-02-04 stsp char *child;
519 a04f49d2 2019-02-04 stsp dent = readdir(d);
520 a04f49d2 2019-02-04 stsp if (dent == NULL)
523 a04f49d2 2019-02-04 stsp if (strcmp(dent->d_name, ".") == 0 ||
524 a04f49d2 2019-02-04 stsp strcmp(dent->d_name, "..") == 0)
527 a04f49d2 2019-02-04 stsp switch (dent->d_type) {
528 a04f49d2 2019-02-04 stsp case DT_REG:
529 a04f49d2 2019-02-04 stsp err = open_ref(&ref, path_refs, subdir, dent->d_name);
533 29b5c214 2019-02-04 stsp err = insert_ref(refs, ref, repo);
538 a04f49d2 2019-02-04 stsp case DT_DIR:
539 a04f49d2 2019-02-04 stsp if (asprintf(&child, "%s%s%s", subdir,
540 a04f49d2 2019-02-04 stsp subdir[0] == '\0' ? "" : "/", dent->d_name) == -1) {
541 a04f49d2 2019-02-04 stsp err = got_error_from_errno();
544 29b5c214 2019-02-04 stsp err = gather_on_disk_refs(refs, path_refs, child, repo);
545 a04f49d2 2019-02-04 stsp free(child);
553 a04f49d2 2019-02-04 stsp closedir(d);
554 a04f49d2 2019-02-04 stsp free(path_subdir);
555 a04f49d2 2019-02-04 stsp return err;
558 199a4027 2019-02-02 stsp const struct got_error *
559 199a4027 2019-02-02 stsp got_ref_list(struct got_reflist_head *refs, struct got_repository *repo)
561 199a4027 2019-02-02 stsp const struct got_error *err;
562 a04f49d2 2019-02-04 stsp char *packed_refs_path, *path_refs = NULL;
563 29b5c214 2019-02-04 stsp FILE *f = NULL;
564 199a4027 2019-02-02 stsp struct got_reference *ref;
566 29b5c214 2019-02-04 stsp /* HEAD ref should always exist. */
567 29b5c214 2019-02-04 stsp path_refs = get_refs_dir_path(repo, GOT_REF_HEAD);
568 29b5c214 2019-02-04 stsp if (path_refs == NULL) {
569 29b5c214 2019-02-04 stsp err = got_error_from_errno();
572 29b5c214 2019-02-04 stsp err = open_ref(&ref, path_refs, "", GOT_REF_HEAD);
575 29b5c214 2019-02-04 stsp err = insert_ref(refs, ref, repo);
579 29b5c214 2019-02-04 stsp /* Gather on-disk refs before parsing packed-refs. */
580 29b5c214 2019-02-04 stsp free(path_refs);
581 29b5c214 2019-02-04 stsp path_refs = get_refs_dir_path(repo, "");
582 29b5c214 2019-02-04 stsp if (path_refs == NULL) {
583 29b5c214 2019-02-04 stsp err = got_error_from_errno();
586 29b5c214 2019-02-04 stsp err = gather_on_disk_refs(refs, path_refs, "", repo);
591 29b5c214 2019-02-04 stsp * The packed-refs file may contain redundant entries, in which
592 29b5c214 2019-02-04 stsp * case on-disk refs take precedence.
594 199a4027 2019-02-02 stsp packed_refs_path = got_repo_get_path_packed_refs(repo);
595 29b5c214 2019-02-04 stsp if (packed_refs_path == NULL) {
596 29b5c214 2019-02-04 stsp err = got_error_from_errno();
600 199a4027 2019-02-02 stsp f = fopen(packed_refs_path, "r");
601 199a4027 2019-02-02 stsp free(packed_refs_path);
603 199a4027 2019-02-02 stsp char *line;
604 199a4027 2019-02-02 stsp size_t len;
605 199a4027 2019-02-02 stsp const char delim[3] = {'\0', '\0', '\0'};
606 199a4027 2019-02-02 stsp while (1) {
607 199a4027 2019-02-02 stsp line = fparseln(f, &len, NULL, delim, 0);
608 199a4027 2019-02-02 stsp if (line == NULL)
610 199a4027 2019-02-02 stsp err = parse_packed_ref_line(&ref, NULL, line);
614 29b5c214 2019-02-04 stsp err = insert_ref(refs, ref, repo);
621 a04f49d2 2019-02-04 stsp free(path_refs);
624 199a4027 2019-02-02 stsp return err;