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>
19 9e672c74 2019-03-11 stsp #include <sys/stat.h>
21 0fd469ce 2019-03-11 stsp #include <errno.h>
22 f77a24b0 2019-03-11 stsp #include <ctype.h>
23 a04f49d2 2019-02-04 stsp #include <dirent.h>
24 56e0773d 2019-11-28 stsp #include <limits.h>
25 5261c201 2018-04-01 stsp #include <sha1.h>
26 5261c201 2018-04-01 stsp #include <stdio.h>
27 5261c201 2018-04-01 stsp #include <stdlib.h>
28 5261c201 2018-04-01 stsp #include <string.h>
29 81a12da5 2020-09-09 naddy #include <unistd.h>
30 5261c201 2018-04-01 stsp #include <util.h>
31 5261c201 2018-04-01 stsp #include <zlib.h>
32 788c352e 2018-06-16 stsp #include <time.h>
33 0cd1c46a 2019-03-11 stsp #include <libgen.h>
35 5261c201 2018-04-01 stsp #include "got_error.h"
36 5261c201 2018-04-01 stsp #include "got_object.h"
37 5261c201 2018-04-01 stsp #include "got_repository.h"
38 5261c201 2018-04-01 stsp #include "got_reference.h"
39 9e672c74 2019-03-11 stsp #include "got_opentemp.h"
40 324d37e7 2019-05-11 stsp #include "got_path.h"
42 5261c201 2018-04-01 stsp #include "got_lib_sha1.h"
43 5261c201 2018-04-01 stsp #include "got_lib_delta.h"
44 63581804 2018-07-09 stsp #include "got_lib_inflate.h"
45 5261c201 2018-04-01 stsp #include "got_lib_object.h"
46 7b5b670e 2020-12-25 stsp #include "got_lib_object_idset.h"
47 f77a24b0 2019-03-11 stsp #include "got_lib_lockfile.h"
49 fb79db15 2019-02-01 stsp #ifndef nitems
50 fb79db15 2019-02-01 stsp #define nitems(_a) (sizeof(_a) / sizeof((_a)[0]))
53 d1f2edc9 2018-06-13 stsp #define GOT_REF_HEADS "heads"
54 d1f2edc9 2018-06-13 stsp #define GOT_REF_TAGS "tags"
55 d1f2edc9 2018-06-13 stsp #define GOT_REF_REMOTES "remotes"
58 598a8b91 2019-03-15 stsp * We do not resolve tags yet, and don't yet care about sorting refs either,
59 598a8b91 2019-03-15 stsp * so packed-refs files we write contain a minimal header which disables all
60 598a8b91 2019-03-15 stsp * packed-refs "traits" supported by Git.
62 598a8b91 2019-03-15 stsp #define GOT_PACKED_REFS_HEADER "# pack-refs with:"
64 5261c201 2018-04-01 stsp /* A symbolic reference. */
65 5261c201 2018-04-01 stsp struct got_symref {
70 29e86f7a 2019-08-12 stsp #define GOT_REF_RECURSE_MAX 20
72 5261c201 2018-04-01 stsp /* A non-symbolic reference (there is no better designation). */
73 5261c201 2018-04-01 stsp struct got_ref {
75 5261c201 2018-04-01 stsp u_int8_t sha1[SHA1_DIGEST_LENGTH];
78 5261c201 2018-04-01 stsp /* A reference which points to an arbitrary object. */
79 5261c201 2018-04-01 stsp struct got_reference {
80 5261c201 2018-04-01 stsp unsigned int flags;
81 5261c201 2018-04-01 stsp #define GOT_REF_IS_SYMBOLIC 0x01
82 f9267c9a 2019-03-15 stsp #define GOT_REF_IS_PACKED 0x02
85 5261c201 2018-04-01 stsp struct got_ref ref;
86 5261c201 2018-04-01 stsp struct got_symref symref;
89 2f17228e 2019-05-12 stsp struct got_lockfile *lf;
90 3f338f0a 2021-07-27 stsp time_t mtime;
92 2c9e323b 2021-10-10 stsp /* Cached timestamp for got_ref_cmp_by_commit_timestamp_descending() */
93 2c9e323b 2021-10-10 stsp time_t committer_time;
96 5261c201 2018-04-01 stsp static const struct got_error *
97 f9267c9a 2019-03-15 stsp alloc_ref(struct got_reference **ref, const char *name,
98 3f338f0a 2021-07-27 stsp struct got_object_id *id, int flags, time_t mtime)
100 f9267c9a 2019-03-15 stsp const struct got_error *err = NULL;
102 f9267c9a 2019-03-15 stsp *ref = calloc(1, sizeof(**ref));
103 f9267c9a 2019-03-15 stsp if (*ref == NULL)
104 638f9024 2019-05-13 stsp return got_error_from_errno("calloc");
106 80d5fc1f 2019-03-15 stsp memcpy((*ref)->ref.ref.sha1, id->sha1, sizeof((*ref)->ref.ref.sha1));
107 c980e470 2019-03-15 stsp (*ref)->flags = flags;
108 f9267c9a 2019-03-15 stsp (*ref)->ref.ref.name = strdup(name);
109 3f338f0a 2021-07-27 stsp (*ref)->mtime = mtime;
110 f9267c9a 2019-03-15 stsp if ((*ref)->ref.ref.name == NULL) {
111 638f9024 2019-05-13 stsp err = got_error_from_errno("strdup");
112 c980e470 2019-03-15 stsp got_ref_close(*ref);
113 f9267c9a 2019-03-15 stsp *ref = NULL;
115 f9267c9a 2019-03-15 stsp return err;
118 f9267c9a 2019-03-15 stsp static const struct got_error *
119 f9267c9a 2019-03-15 stsp alloc_symref(struct got_reference **ref, const char *name,
120 f9267c9a 2019-03-15 stsp const char *target_ref, int flags)
122 f9267c9a 2019-03-15 stsp const struct got_error *err = NULL;
124 5261c201 2018-04-01 stsp *ref = calloc(1, sizeof(**ref));
125 5261c201 2018-04-01 stsp if (*ref == NULL)
126 638f9024 2019-05-13 stsp return got_error_from_errno("calloc");
128 f9267c9a 2019-03-15 stsp (*ref)->flags = GOT_REF_IS_SYMBOLIC | flags;
129 f9267c9a 2019-03-15 stsp (*ref)->ref.symref.name = strdup(name);
130 f9267c9a 2019-03-15 stsp if ((*ref)->ref.symref.name == NULL) {
131 638f9024 2019-05-13 stsp err = got_error_from_errno("strdup");
132 f9267c9a 2019-03-15 stsp got_ref_close(*ref);
133 f9267c9a 2019-03-15 stsp *ref = NULL;
134 cdb8f1fa 2019-08-28 hiltjo return err;
136 f9267c9a 2019-03-15 stsp (*ref)->ref.symref.ref = strdup(target_ref);
137 f9267c9a 2019-03-15 stsp if ((*ref)->ref.symref.ref == NULL) {
138 638f9024 2019-05-13 stsp err = got_error_from_errno("strdup");
139 f9267c9a 2019-03-15 stsp got_ref_close(*ref);
140 f9267c9a 2019-03-15 stsp *ref = NULL;
142 f9267c9a 2019-03-15 stsp return err;
145 5261c201 2018-04-01 stsp static const struct got_error *
146 f9267c9a 2019-03-15 stsp parse_symref(struct got_reference **ref, const char *name, const char *line)
148 f9267c9a 2019-03-15 stsp if (line[0] == '\0')
149 f9267c9a 2019-03-15 stsp return got_error(GOT_ERR_BAD_REF_DATA);
151 f9267c9a 2019-03-15 stsp return alloc_symref(ref, name, line, 0);
154 f9267c9a 2019-03-15 stsp static const struct got_error *
155 3f338f0a 2021-07-27 stsp parse_ref_line(struct got_reference **ref, const char *name, const char *line,
156 3f338f0a 2021-07-27 stsp time_t mtime)
158 5892cdd6 2019-03-10 stsp struct got_object_id id;
160 5261c201 2018-04-01 stsp if (strncmp(line, "ref: ", 5) == 0) {
162 5261c201 2018-04-01 stsp return parse_symref(ref, name, line);
165 5892cdd6 2019-03-10 stsp if (!got_parse_sha1_digest(id.sha1, line))
166 30c0868d 2019-02-03 stsp return got_error(GOT_ERR_BAD_REF_DATA);
168 3f338f0a 2021-07-27 stsp return alloc_ref(ref, name, &id, 0, mtime);
171 5261c201 2018-04-01 stsp static const struct got_error *
172 5261c201 2018-04-01 stsp parse_ref_file(struct got_reference **ref, const char *name,
173 b2070a3f 2020-03-22 stsp const char *absname, const char *abspath, int lock)
175 5261c201 2018-04-01 stsp const struct got_error *err = NULL;
177 c30018ad 2019-10-21 stsp char *line = NULL;
178 c30018ad 2019-10-21 stsp size_t linesize = 0;
179 c30018ad 2019-10-21 stsp ssize_t linelen;
180 2f17228e 2019-05-12 stsp struct got_lockfile *lf = NULL;
181 3f338f0a 2021-07-27 stsp struct stat sb;
183 2f17228e 2019-05-12 stsp if (lock) {
184 5345b4c7 2021-07-06 stsp err = got_lockfile_lock(&lf, abspath, -1);
186 9f142382 2020-03-21 stsp if (err->code == GOT_ERR_ERRNO && errno == ENOENT)
187 b2070a3f 2020-03-22 stsp err = got_error_not_ref(name);
188 9f142382 2020-03-21 stsp return err;
192 c0a1c016 2019-03-15 stsp f = fopen(abspath, "rb");
193 f5c58ad1 2019-05-12 stsp if (f == NULL) {
194 b2070a3f 2020-03-22 stsp if (errno != ENOTDIR && errno != ENOENT)
195 b2070a3f 2020-03-22 stsp err = got_error_from_errno2("fopen", abspath);
197 b2070a3f 2020-03-22 stsp err = got_error_not_ref(name);
199 5345b4c7 2021-07-06 stsp got_lockfile_unlock(lf, -1);
200 b2070a3f 2020-03-22 stsp return err;
202 3f338f0a 2021-07-27 stsp if (fstat(fileno(f), &sb) == -1) {
203 3f338f0a 2021-07-27 stsp err = got_error_from_errno2("fstat", abspath);
207 c30018ad 2019-10-21 stsp linelen = getline(&line, &linesize, f);
208 c30018ad 2019-10-21 stsp if (linelen == -1) {
209 c30018ad 2019-10-21 stsp if (feof(f))
210 c30018ad 2019-10-21 stsp err = NULL; /* ignore empty files (could be locks) */
212 b2070a3f 2020-03-22 stsp if (errno == EISDIR)
213 b2070a3f 2020-03-22 stsp err = got_error(GOT_ERR_NOT_REF);
214 b2070a3f 2020-03-22 stsp else if (ferror(f))
215 b2070a3f 2020-03-22 stsp err = got_ferror(f, GOT_ERR_IO);
217 b2070a3f 2020-03-22 stsp err = got_error_from_errno2("getline", abspath);
220 5345b4c7 2021-07-06 stsp got_lockfile_unlock(lf, -1);
223 c30018ad 2019-10-21 stsp while (linelen > 0 && line[linelen - 1] == '\n') {
224 c30018ad 2019-10-21 stsp line[linelen - 1] = '\0';
228 3f338f0a 2021-07-27 stsp err = parse_ref_line(ref, absname, line, sb.st_mtime);
229 f5c58ad1 2019-05-12 stsp if (lock) {
231 5345b4c7 2021-07-06 stsp got_lockfile_unlock(lf, -1);
234 f5c58ad1 2019-05-12 stsp (*ref)->lf = lf;
236 5345b4c7 2021-07-06 stsp got_lockfile_unlock(lf, -1);
240 5261c201 2018-04-01 stsp free(line);
241 56b63ca4 2021-01-22 stsp if (fclose(f) == EOF && err == NULL) {
242 638f9024 2019-05-13 stsp err = got_error_from_errno("fclose");
243 2f17228e 2019-05-12 stsp if (*ref) {
245 f5c58ad1 2019-05-12 stsp got_ref_unlock(*ref);
246 2f17228e 2019-05-12 stsp got_ref_close(*ref);
247 2f17228e 2019-05-12 stsp *ref = NULL;
250 5261c201 2018-04-01 stsp return err;
254 c5f754cc 2019-02-01 stsp is_well_known_ref(const char *refname)
256 c5f754cc 2019-02-01 stsp return (strcmp(refname, GOT_REF_HEAD) == 0 ||
257 5261c201 2018-04-01 stsp strcmp(refname, GOT_REF_ORIG_HEAD) == 0 ||
258 5261c201 2018-04-01 stsp strcmp(refname, GOT_REF_MERGE_HEAD) == 0 ||
259 c5f754cc 2019-02-01 stsp strcmp(refname, GOT_REF_FETCH_HEAD) == 0);
262 c5f754cc 2019-02-01 stsp static char *
263 c5f754cc 2019-02-01 stsp get_refs_dir_path(struct got_repository *repo, const char *refname)
265 c5f754cc 2019-02-01 stsp if (is_well_known_ref(refname) || strncmp(refname, "refs/", 5) == 0)
266 6e9da951 2019-01-06 stsp return strdup(got_repo_get_path_git_dir(repo));
268 5261c201 2018-04-01 stsp return got_repo_get_path_refs(repo);
272 63e5aa5c 2021-08-23 stsp got_ref_name_is_valid(const char *name)
274 7fa81f88 2020-02-21 stsp const char *s, *seg;
275 f77a24b0 2019-03-11 stsp const char forbidden[] = { ' ', '~', '^', ':', '?', '*', '[' , '\\' };
276 f77a24b0 2019-03-11 stsp const char *forbidden_seq[] = { "//", "..", "@{" };
277 f77a24b0 2019-03-11 stsp const char *lfs = GOT_LOCKFILE_SUFFIX;
278 f77a24b0 2019-03-11 stsp const size_t lfs_len = sizeof(GOT_LOCKFILE_SUFFIX) - 1;
281 f77a24b0 2019-03-11 stsp if (name[0] == '@' && name[1] == '\0')
286 f77a24b0 2019-03-11 stsp if (seg[0] == '\0' || seg[0] == '.' || seg[0] == '/')
288 f77a24b0 2019-03-11 stsp while (*s) {
289 f77a24b0 2019-03-11 stsp for (i = 0; i < nitems(forbidden); i++) {
290 f77a24b0 2019-03-11 stsp if (*s == forbidden[i])
293 f77a24b0 2019-03-11 stsp for (i = 0; i < nitems(forbidden_seq); i++) {
294 f77a24b0 2019-03-11 stsp if (s[0] == forbidden_seq[i][0] &&
295 f77a24b0 2019-03-11 stsp s[1] == forbidden_seq[i][1])
298 f77a24b0 2019-03-11 stsp if (iscntrl((unsigned char)s[0]))
300 f77a24b0 2019-03-11 stsp if (s[0] == '.' && s[1] == '\0')
302 f77a24b0 2019-03-11 stsp if (*s == '/') {
303 f77a24b0 2019-03-11 stsp const char *nextseg = s + 1;
304 f77a24b0 2019-03-11 stsp if (nextseg[0] == '\0' || nextseg[0] == '.' ||
305 f77a24b0 2019-03-11 stsp nextseg[0] == '/')
307 f77a24b0 2019-03-11 stsp if (seg <= s - lfs_len &&
308 f77a24b0 2019-03-11 stsp strncmp(s - lfs_len, lfs, lfs_len) == 0)
310 f77a24b0 2019-03-11 stsp seg = nextseg;
315 f77a24b0 2019-03-11 stsp if (seg <= s - lfs_len &&
316 f77a24b0 2019-03-11 stsp strncmp(s - lfs_len, lfs, lfs_len) == 0)
322 5892cdd6 2019-03-10 stsp const struct got_error *
323 5892cdd6 2019-03-10 stsp got_ref_alloc(struct got_reference **ref, const char *name,
324 5892cdd6 2019-03-10 stsp struct got_object_id *id)
326 63e5aa5c 2021-08-23 stsp if (!got_ref_name_is_valid(name))
327 24b5452a 2019-10-09 stsp return got_error_path(name, GOT_ERR_BAD_REF_NAME);
329 3f338f0a 2021-07-27 stsp return alloc_ref(ref, name, id, 0, 0);
332 aaf88317 2019-07-10 stsp const struct got_error *
333 aaf88317 2019-07-10 stsp got_ref_alloc_symref(struct got_reference **ref, const char *name,
334 aaf88317 2019-07-10 stsp struct got_reference *target_ref)
336 63e5aa5c 2021-08-23 stsp if (!got_ref_name_is_valid(name))
337 24b5452a 2019-10-09 stsp return got_error_path(name, GOT_ERR_BAD_REF_NAME);
339 aaf88317 2019-07-10 stsp return alloc_symref(ref, name, got_ref_get_name(target_ref), 0);
342 d1f2edc9 2018-06-13 stsp static const struct got_error *
343 fb79db15 2019-02-01 stsp parse_packed_ref_line(struct got_reference **ref, const char *abs_refname,
344 3f338f0a 2021-07-27 stsp const char *line, time_t mtime)
346 5892cdd6 2019-03-10 stsp struct got_object_id id;
347 5892cdd6 2019-03-10 stsp const char *name;
349 fb79db15 2019-02-01 stsp *ref = NULL;
351 532920c8 2019-02-01 stsp if (line[0] == '#' || line[0] == '^')
352 fb79db15 2019-02-01 stsp return NULL;
354 5892cdd6 2019-03-10 stsp if (!got_parse_sha1_digest(id.sha1, line))
355 30c0868d 2019-02-03 stsp return got_error(GOT_ERR_BAD_REF_DATA);
357 199a4027 2019-02-02 stsp if (abs_refname) {
358 199a4027 2019-02-02 stsp if (strcmp(line + SHA1_DIGEST_STRING_LENGTH, abs_refname) != 0)
359 199a4027 2019-02-02 stsp return NULL;
360 5892cdd6 2019-03-10 stsp name = abs_refname;
362 5892cdd6 2019-03-10 stsp name = line + SHA1_DIGEST_STRING_LENGTH;
364 3f338f0a 2021-07-27 stsp return alloc_ref(ref, name, &id, GOT_REF_IS_PACKED, mtime);
367 fb79db15 2019-02-01 stsp static const struct got_error *
368 0dec1cc0 2019-02-01 stsp open_packed_ref(struct got_reference **ref, FILE *f, const char **subdirs,
369 3f338f0a 2021-07-27 stsp int nsubdirs, const char *refname, time_t mtime)
371 fb79db15 2019-02-01 stsp const struct got_error *err = NULL;
372 fb79db15 2019-02-01 stsp char *abs_refname;
373 9bdd68dd 2020-01-02 naddy char *line = NULL;
374 9bdd68dd 2020-01-02 naddy size_t linesize = 0;
375 9bdd68dd 2020-01-02 naddy ssize_t linelen;
376 0dec1cc0 2019-02-01 stsp int i, ref_is_absolute = (strncmp(refname, "refs/", 5) == 0);
378 1e37702e 2019-02-04 stsp *ref = NULL;
380 0dec1cc0 2019-02-01 stsp if (ref_is_absolute)
381 0dec1cc0 2019-02-01 stsp abs_refname = (char *)refname;
383 9bdd68dd 2020-01-02 naddy linelen = getline(&line, &linesize, f);
384 9bdd68dd 2020-01-02 naddy if (linelen == -1) {
385 7ab0422a 2019-03-15 stsp if (feof(f))
387 7ab0422a 2019-03-15 stsp err = got_ferror(f, GOT_ERR_BAD_REF_DATA);
390 9bdd68dd 2020-01-02 naddy if (linelen > 0 && line[linelen - 1] == '\n')
391 9bdd68dd 2020-01-02 naddy line[linelen - 1] = '\0';
392 0dec1cc0 2019-02-01 stsp for (i = 0; i < nsubdirs; i++) {
393 0dec1cc0 2019-02-01 stsp if (!ref_is_absolute &&
394 0dec1cc0 2019-02-01 stsp asprintf(&abs_refname, "refs/%s/%s", subdirs[i],
395 0dec1cc0 2019-02-01 stsp refname) == -1)
396 638f9024 2019-05-13 stsp return got_error_from_errno("asprintf");
397 3f338f0a 2021-07-27 stsp err = parse_packed_ref_line(ref, abs_refname, line,
399 0dec1cc0 2019-02-01 stsp if (!ref_is_absolute)
400 0dec1cc0 2019-02-01 stsp free(abs_refname);
401 532920c8 2019-02-01 stsp if (err || *ref != NULL)
406 fb79db15 2019-02-01 stsp } while (*ref == NULL);
407 9bdd68dd 2020-01-02 naddy free(line);
409 fb79db15 2019-02-01 stsp return err;
412 fb79db15 2019-02-01 stsp static const struct got_error *
413 d1f2edc9 2018-06-13 stsp open_ref(struct got_reference **ref, const char *path_refs, const char *subdir,
414 2f17228e 2019-05-12 stsp const char *name, int lock)
416 d1f2edc9 2018-06-13 stsp const struct got_error *err = NULL;
417 a04f49d2 2019-02-04 stsp char *path = NULL;
418 a04f49d2 2019-02-04 stsp char *absname = NULL;
419 a04f49d2 2019-02-04 stsp int ref_is_absolute = (strncmp(name, "refs/", 5) == 0);
420 75236079 2020-03-25 stsp int ref_is_well_known = (subdir[0] == '\0' && is_well_known_ref(name));
422 1e37702e 2019-02-04 stsp *ref = NULL;
424 63e5aa5c 2021-08-23 stsp if (!got_ref_name_is_valid(name))
425 57c18198 2021-05-24 stsp return got_error_path(name, GOT_ERR_BAD_REF_NAME);
427 a04f49d2 2019-02-04 stsp if (ref_is_absolute || ref_is_well_known) {
428 a04f49d2 2019-02-04 stsp if (asprintf(&path, "%s/%s", path_refs, name) == -1)
429 638f9024 2019-05-13 stsp return got_error_from_errno("asprintf");
430 a04f49d2 2019-02-04 stsp absname = (char *)name;
432 58908ed0 2019-03-11 stsp if (asprintf(&path, "%s/%s%s%s", path_refs, subdir,
433 58908ed0 2019-03-11 stsp subdir[0] ? "/" : "", name) == -1)
434 638f9024 2019-05-13 stsp return got_error_from_errno("asprintf");
436 58908ed0 2019-03-11 stsp if (asprintf(&absname, "refs/%s%s%s",
437 58908ed0 2019-03-11 stsp subdir, subdir[0] ? "/" : "", name) == -1) {
438 638f9024 2019-05-13 stsp err = got_error_from_errno("asprintf");
443 b2070a3f 2020-03-22 stsp err = parse_ref_file(ref, name, absname, path, lock);
445 a04f49d2 2019-02-04 stsp if (!ref_is_absolute && !ref_is_well_known)
446 a04f49d2 2019-02-04 stsp free(absname);
447 a04f49d2 2019-02-04 stsp free(path);
448 d1f2edc9 2018-06-13 stsp return err;
451 5261c201 2018-04-01 stsp const struct got_error *
452 5261c201 2018-04-01 stsp got_ref_open(struct got_reference **ref, struct got_repository *repo,
453 abc59930 2021-09-05 naddy const char *refname, int lock)
455 5261c201 2018-04-01 stsp const struct got_error *err = NULL;
456 c5f754cc 2019-02-01 stsp char *path_refs = NULL;
457 fb79db15 2019-02-01 stsp const char *subdirs[] = {
458 fb79db15 2019-02-01 stsp GOT_REF_HEADS, GOT_REF_TAGS, GOT_REF_REMOTES
461 16aeacf7 2020-11-26 stsp int well_known = is_well_known_ref(refname);
462 a875589a 2019-05-12 stsp struct got_lockfile *lf = NULL;
464 1e37702e 2019-02-04 stsp *ref = NULL;
466 e135804e 2019-02-10 stsp path_refs = get_refs_dir_path(repo, refname);
467 e135804e 2019-02-10 stsp if (path_refs == NULL) {
468 638f9024 2019-05-13 stsp err = got_error_from_errno2("get_refs_dir_path", refname);
472 0885ce8f 2019-05-12 stsp if (well_known) {
473 0885ce8f 2019-05-12 stsp err = open_ref(ref, path_refs, "", refname, lock);
475 c5f754cc 2019-02-01 stsp char *packed_refs_path;
478 e135804e 2019-02-10 stsp /* Search on-disk refs before packed refs! */
479 e135804e 2019-02-10 stsp for (i = 0; i < nitems(subdirs); i++) {
480 2f17228e 2019-05-12 stsp err = open_ref(ref, path_refs, subdirs[i], refname,
482 b2070a3f 2020-03-22 stsp if ((err && err->code != GOT_ERR_NOT_REF) || *ref)
486 c5f754cc 2019-02-01 stsp packed_refs_path = got_repo_get_path_packed_refs(repo);
487 e135804e 2019-02-10 stsp if (packed_refs_path == NULL) {
488 638f9024 2019-05-13 stsp err = got_error_from_errno(
489 230a42bd 2019-05-11 jcs "got_repo_get_path_packed_refs");
493 2f17228e 2019-05-12 stsp if (lock) {
494 5345b4c7 2021-07-06 stsp err = got_lockfile_lock(&lf, packed_refs_path, -1);
498 c5f754cc 2019-02-01 stsp f = fopen(packed_refs_path, "rb");
499 c5f754cc 2019-02-01 stsp free(packed_refs_path);
500 c5f754cc 2019-02-01 stsp if (f != NULL) {
501 3f338f0a 2021-07-27 stsp struct stat sb;
502 3f338f0a 2021-07-27 stsp if (fstat(fileno(f), &sb) == -1) {
503 3f338f0a 2021-07-27 stsp err = got_error_from_errno2("fstat",
504 3f338f0a 2021-07-27 stsp packed_refs_path);
507 0dec1cc0 2019-02-01 stsp err = open_packed_ref(ref, f, subdirs, nitems(subdirs),
508 3f338f0a 2021-07-27 stsp refname, sb.st_mtime);
509 a875589a 2019-05-12 stsp if (!err) {
510 56b63ca4 2021-01-22 stsp if (fclose(f) == EOF) {
511 638f9024 2019-05-13 stsp err = got_error_from_errno("fclose");
512 a875589a 2019-05-12 stsp got_ref_close(*ref);
513 a875589a 2019-05-12 stsp *ref = NULL;
514 6e472abb 2019-05-13 stsp } else if (*ref)
515 a875589a 2019-05-12 stsp (*ref)->lf = lf;
520 5b575c25 2019-05-12 stsp if (!err && *ref == NULL)
521 1e37702e 2019-02-04 stsp err = got_error_not_ref(refname);
522 a875589a 2019-05-12 stsp if (err && lf)
523 5345b4c7 2021-07-06 stsp got_lockfile_unlock(lf, -1);
524 5261c201 2018-04-01 stsp free(path_refs);
525 5261c201 2018-04-01 stsp return err;
529 5261c201 2018-04-01 stsp got_ref_close(struct got_reference *ref)
531 e09d28b1 2019-03-15 stsp if (ref->flags & GOT_REF_IS_SYMBOLIC) {
532 5261c201 2018-04-01 stsp free(ref->ref.symref.name);
533 e09d28b1 2019-03-15 stsp free(ref->ref.symref.ref);
535 5261c201 2018-04-01 stsp free(ref->ref.ref.name);
539 5261c201 2018-04-01 stsp struct got_reference *
540 5261c201 2018-04-01 stsp got_ref_dup(struct got_reference *ref)
542 5261c201 2018-04-01 stsp struct got_reference *ret;
544 5261c201 2018-04-01 stsp ret = calloc(1, sizeof(*ret));
545 5261c201 2018-04-01 stsp if (ret == NULL)
546 5261c201 2018-04-01 stsp return NULL;
548 5261c201 2018-04-01 stsp ret->flags = ref->flags;
549 5261c201 2018-04-01 stsp if (ref->flags & GOT_REF_IS_SYMBOLIC) {
550 5261c201 2018-04-01 stsp ret->ref.symref.name = strdup(ref->ref.symref.name);
551 5261c201 2018-04-01 stsp if (ret->ref.symref.name == NULL) {
553 5261c201 2018-04-01 stsp return NULL;
555 5261c201 2018-04-01 stsp ret->ref.symref.ref = strdup(ref->ref.symref.ref);
556 5261c201 2018-04-01 stsp if (ret->ref.symref.ref == NULL) {
557 5261c201 2018-04-01 stsp free(ret->ref.symref.name);
559 5261c201 2018-04-01 stsp return NULL;
562 4c4ce67b 2020-12-25 stsp ret->ref.ref.name = strdup(ref->ref.ref.name);
563 4c4ce67b 2020-12-25 stsp if (ret->ref.ref.name == NULL) {
565 5261c201 2018-04-01 stsp return NULL;
567 5261c201 2018-04-01 stsp memcpy(ret->ref.ref.sha1, ref->ref.ref.sha1,
568 80d5fc1f 2019-03-15 stsp sizeof(ret->ref.ref.sha1));
571 5261c201 2018-04-01 stsp return ret;
574 b8bad2ba 2019-08-23 stsp const struct got_error *
575 b8bad2ba 2019-08-23 stsp got_reflist_entry_dup(struct got_reflist_entry **newp,
576 b8bad2ba 2019-08-23 stsp struct got_reflist_entry *re)
578 b8bad2ba 2019-08-23 stsp const struct got_error *err = NULL;
579 b8bad2ba 2019-08-23 stsp struct got_reflist_entry *new;
581 b8bad2ba 2019-08-23 stsp *newp = NULL;
583 b8bad2ba 2019-08-23 stsp new = malloc(sizeof(*new));
584 b8bad2ba 2019-08-23 stsp if (new == NULL)
585 b8bad2ba 2019-08-23 stsp return got_error_from_errno("malloc");
587 b8bad2ba 2019-08-23 stsp new->ref = got_ref_dup(re->ref);
588 b8bad2ba 2019-08-23 stsp if (new->ref == NULL) {
589 b8bad2ba 2019-08-23 stsp err = got_error_from_errno("got_ref_dup");
591 b8bad2ba 2019-08-23 stsp return err;
594 b8bad2ba 2019-08-23 stsp *newp = new;
595 b8bad2ba 2019-08-23 stsp return NULL;
598 cce2f485 2021-08-22 stsp const struct got_error *
599 cce2f485 2021-08-22 stsp got_ref_resolve_symbolic(struct got_reference **resolved,
600 5261c201 2018-04-01 stsp struct got_repository *repo, struct got_reference *ref)
602 5261c201 2018-04-01 stsp struct got_reference *nextref;
603 5261c201 2018-04-01 stsp const struct got_error *err;
605 2f17228e 2019-05-12 stsp err = got_ref_open(&nextref, repo, ref->ref.symref.ref, 0);
607 5261c201 2018-04-01 stsp return err;
609 5261c201 2018-04-01 stsp if (nextref->flags & GOT_REF_IS_SYMBOLIC)
610 cce2f485 2021-08-22 stsp err = got_ref_resolve_symbolic(resolved, repo, nextref);
612 5261c201 2018-04-01 stsp *resolved = got_ref_dup(nextref);
614 5261c201 2018-04-01 stsp got_ref_close(nextref);
615 5261c201 2018-04-01 stsp return err;
618 29e86f7a 2019-08-12 stsp static const struct got_error *
619 29e86f7a 2019-08-12 stsp ref_resolve(struct got_object_id **id, struct got_repository *repo,
620 29e86f7a 2019-08-12 stsp struct got_reference *ref, int recursion)
622 5261c201 2018-04-01 stsp const struct got_error *err;
624 29e86f7a 2019-08-12 stsp if (recursion <= 0)
625 29e86f7a 2019-08-12 stsp return got_error_msg(GOT_ERR_RECURSION,
626 29e86f7a 2019-08-12 stsp "reference recursion limit reached");
628 5261c201 2018-04-01 stsp if (ref->flags & GOT_REF_IS_SYMBOLIC) {
629 5261c201 2018-04-01 stsp struct got_reference *resolved = NULL;
630 cce2f485 2021-08-22 stsp err = got_ref_resolve_symbolic(&resolved, repo, ref);
631 5261c201 2018-04-01 stsp if (err == NULL)
632 29e86f7a 2019-08-12 stsp err = ref_resolve(id, repo, resolved, --recursion);
633 57b6f99a 2019-04-13 stsp if (resolved)
634 57b6f99a 2019-04-13 stsp got_ref_close(resolved);
635 5261c201 2018-04-01 stsp return err;
638 5261c201 2018-04-01 stsp *id = calloc(1, sizeof(**id));
639 5261c201 2018-04-01 stsp if (*id == NULL)
640 638f9024 2019-05-13 stsp return got_error_from_errno("calloc");
641 80d5fc1f 2019-03-15 stsp memcpy((*id)->sha1, ref->ref.ref.sha1, sizeof((*id)->sha1));
642 5261c201 2018-04-01 stsp return NULL;
645 29e86f7a 2019-08-12 stsp const struct got_error *
646 29e86f7a 2019-08-12 stsp got_ref_resolve(struct got_object_id **id, struct got_repository *repo,
647 29e86f7a 2019-08-12 stsp struct got_reference *ref)
649 29e86f7a 2019-08-12 stsp return ref_resolve(id, repo, ref, GOT_REF_RECURSE_MAX);
653 5261c201 2018-04-01 stsp got_ref_to_str(struct got_reference *ref)
657 271d2a38 2018-12-25 stsp if (ref->flags & GOT_REF_IS_SYMBOLIC)
658 271d2a38 2018-12-25 stsp return strdup(ref->ref.symref.ref);
660 271d2a38 2018-12-25 stsp str = malloc(SHA1_DIGEST_STRING_LENGTH);
661 271d2a38 2018-12-25 stsp if (str == NULL)
662 271d2a38 2018-12-25 stsp return NULL;
664 271d2a38 2018-12-25 stsp if (got_sha1_digest_to_str(ref->ref.ref.sha1, str,
665 271d2a38 2018-12-25 stsp SHA1_DIGEST_STRING_LENGTH) == NULL) {
667 271d2a38 2018-12-25 stsp return NULL;
670 5261c201 2018-04-01 stsp return str;
673 0bd18d37 2019-02-01 stsp const char *
674 0bd18d37 2019-02-01 stsp got_ref_get_name(struct got_reference *ref)
676 0bd18d37 2019-02-01 stsp if (ref->flags & GOT_REF_IS_SYMBOLIC)
677 0bd18d37 2019-02-01 stsp return ref->ref.symref.name;
679 0bd18d37 2019-02-01 stsp return ref->ref.ref.name;
682 aaf88317 2019-07-10 stsp const char *
683 aaf88317 2019-07-10 stsp got_ref_get_symref_target(struct got_reference *ref)
685 aaf88317 2019-07-10 stsp if (ref->flags & GOT_REF_IS_SYMBOLIC)
686 aaf88317 2019-07-10 stsp return ref->ref.symref.ref;
688 b8bad2ba 2019-08-23 stsp return NULL;
692 3f338f0a 2021-07-27 stsp got_ref_get_mtime(struct got_reference *ref)
694 3f338f0a 2021-07-27 stsp return ref->mtime;
697 b8bad2ba 2019-08-23 stsp const struct got_error *
698 b8bad2ba 2019-08-23 stsp got_ref_cmp_by_name(void *arg, int *cmp, struct got_reference *re1,
699 b8bad2ba 2019-08-23 stsp struct got_reference* re2)
701 b8bad2ba 2019-08-23 stsp const char *name1 = got_ref_get_name(re1);
702 b8bad2ba 2019-08-23 stsp const char *name2 = got_ref_get_name(re2);
704 b8bad2ba 2019-08-23 stsp *cmp = got_path_cmp(name1, name2, strlen(name1), strlen(name2));
705 aaf88317 2019-07-10 stsp return NULL;
708 d1f16636 2020-01-15 stsp const struct got_error *
709 d1f16636 2020-01-15 stsp got_ref_cmp_tags(void *arg, int *cmp, struct got_reference *ref1,
710 d1f16636 2020-01-15 stsp struct got_reference *ref2)
712 d1f16636 2020-01-15 stsp const struct got_error *err = NULL;
713 d1f16636 2020-01-15 stsp struct got_repository *repo = arg;
714 d1f16636 2020-01-15 stsp struct got_object_id *id1, *id2 = NULL;
715 d1f16636 2020-01-15 stsp struct got_tag_object *tag1 = NULL, *tag2 = NULL;
716 d1f16636 2020-01-15 stsp struct got_commit_object *commit1 = NULL, *commit2 = NULL;
717 d1f16636 2020-01-15 stsp time_t time1, time2;
721 d1f16636 2020-01-15 stsp err = got_ref_resolve(&id1, repo, ref1);
723 d1f16636 2020-01-15 stsp return err;
724 d1f16636 2020-01-15 stsp err = got_object_open_as_tag(&tag1, repo, id1);
726 d1f16636 2020-01-15 stsp if (err->code != GOT_ERR_OBJ_TYPE)
728 d1f16636 2020-01-15 stsp /* "lightweight" tag */
729 d1f16636 2020-01-15 stsp err = got_object_open_as_commit(&commit1, repo, id1);
732 d1f16636 2020-01-15 stsp time1 = got_object_commit_get_committer_time(commit1);
734 d1f16636 2020-01-15 stsp time1 = got_object_tag_get_tagger_time(tag1);
736 d1f16636 2020-01-15 stsp err = got_ref_resolve(&id2, repo, ref2);
739 d1f16636 2020-01-15 stsp err = got_object_open_as_tag(&tag2, repo, id2);
741 d1f16636 2020-01-15 stsp if (err->code != GOT_ERR_OBJ_TYPE)
743 d1f16636 2020-01-15 stsp /* "lightweight" tag */
744 d1f16636 2020-01-15 stsp err = got_object_open_as_commit(&commit2, repo, id2);
747 d1f16636 2020-01-15 stsp time2 = got_object_commit_get_committer_time(commit2);
749 d1f16636 2020-01-15 stsp time2 = got_object_tag_get_tagger_time(tag2);
751 d1f16636 2020-01-15 stsp /* Put latest tags first. */
752 d1f16636 2020-01-15 stsp if (time1 < time2)
754 d1f16636 2020-01-15 stsp else if (time1 > time2)
757 d1f16636 2020-01-15 stsp err = got_ref_cmp_by_name(NULL, cmp, ref2, ref1);
762 d1f16636 2020-01-15 stsp got_object_tag_close(tag1);
764 d1f16636 2020-01-15 stsp got_object_tag_close(tag2);
765 e600f124 2021-03-21 stsp if (commit1)
766 e600f124 2021-03-21 stsp got_object_commit_close(commit1);
767 e600f124 2021-03-21 stsp if (commit2)
768 e600f124 2021-03-21 stsp got_object_commit_close(commit2);
769 7f66531d 2021-11-16 stsp return err;
772 7f66531d 2021-11-16 stsp static const struct got_error *
773 7f66531d 2021-11-16 stsp get_committer_time(struct got_reference *ref, struct got_repository *repo)
775 7f66531d 2021-11-16 stsp const struct got_error *err = NULL;
776 7f66531d 2021-11-16 stsp int obj_type;
777 7f66531d 2021-11-16 stsp struct got_commit_object *commit = NULL;
778 7f66531d 2021-11-16 stsp struct got_tag_object *tag = NULL;
779 7f66531d 2021-11-16 stsp struct got_object_id *id = NULL;
781 7f66531d 2021-11-16 stsp err = got_ref_resolve(&id, repo, ref);
783 7f66531d 2021-11-16 stsp return err;
785 7f66531d 2021-11-16 stsp err = got_object_get_type(&obj_type, repo, id);
789 7f66531d 2021-11-16 stsp switch (obj_type) {
790 7f66531d 2021-11-16 stsp case GOT_OBJ_TYPE_COMMIT:
791 7f66531d 2021-11-16 stsp err = got_object_open_as_commit(&commit, repo, id);
794 7f66531d 2021-11-16 stsp ref->committer_time =
795 7f66531d 2021-11-16 stsp got_object_commit_get_committer_time(commit);
797 7f66531d 2021-11-16 stsp case GOT_OBJ_TYPE_TAG:
798 7f66531d 2021-11-16 stsp err = got_object_open_as_tag(&tag, repo, id);
801 7f66531d 2021-11-16 stsp ref->committer_time = got_object_tag_get_tagger_time(tag);
804 7f66531d 2021-11-16 stsp /* best effort for other object types */
805 7f66531d 2021-11-16 stsp ref->committer_time = got_ref_get_mtime(ref);
810 7f66531d 2021-11-16 stsp if (commit)
811 7f66531d 2021-11-16 stsp got_object_commit_close(commit);
813 7f66531d 2021-11-16 stsp got_object_tag_close(tag);
814 e600f124 2021-03-21 stsp return err;
817 e600f124 2021-03-21 stsp const struct got_error *
818 e600f124 2021-03-21 stsp got_ref_cmp_by_commit_timestamp_descending(void *arg, int *cmp,
819 e600f124 2021-03-21 stsp struct got_reference *ref1, struct got_reference *ref2)
821 e600f124 2021-03-21 stsp const struct got_error *err;
822 e600f124 2021-03-21 stsp struct got_repository *repo = arg;
826 2c9e323b 2021-10-10 stsp if (ref1->committer_time == 0) {
827 7f66531d 2021-11-16 stsp err = get_committer_time(ref1, repo);
829 2c9e323b 2021-10-10 stsp return err;
831 7f66531d 2021-11-16 stsp if (ref2->committer_time == 0) {
832 7f66531d 2021-11-16 stsp err = get_committer_time(ref2, repo);
834 2c9e323b 2021-10-10 stsp return err;
837 2c9e323b 2021-10-10 stsp if (ref1->committer_time < ref2->committer_time)
839 2c9e323b 2021-10-10 stsp else if (ref2->committer_time < ref1->committer_time)
842 d1f16636 2020-01-15 stsp return err;
845 779e1159 2021-06-18 stsp const struct got_error *
846 779e1159 2021-06-18 stsp got_reflist_insert(struct got_reflist_entry **newp, struct got_reflist_head *refs,
847 72acb3d8 2021-08-06 stsp struct got_reference *ref, got_ref_cmp_cb cmp_cb, void *cmp_arg)
849 199a4027 2019-02-02 stsp const struct got_error *err;
850 d9dff0e5 2020-12-26 stsp struct got_reflist_entry *new, *re;
853 505287be 2019-03-15 stsp *newp = NULL;
855 6fdbf7b0 2019-03-15 stsp new = malloc(sizeof(*new));
856 48cae60d 2020-09-22 stsp if (new == NULL)
857 638f9024 2019-05-13 stsp return got_error_from_errno("malloc");
858 7a3c76f5 2019-02-05 stsp new->ref = ref;
859 505287be 2019-03-15 stsp *newp = new;
862 29b5c214 2019-02-04 stsp * We must de-duplicate entries on insert because packed-refs may
863 29b5c214 2019-02-04 stsp * contain redundant entries. On-disk refs take precedence.
864 29b5c214 2019-02-04 stsp * This code assumes that on-disk revs are read before packed-refs.
865 e397b6db 2019-02-04 stsp * We're iterating the list anyway, so insert elements sorted by name.
867 d9dff0e5 2020-12-26 stsp * Many callers will provide paths in a somewhat sorted order.
868 d9dff0e5 2020-12-26 stsp * Iterating backwards from the tail of the list should be more
869 d9dff0e5 2020-12-26 stsp * efficient than traversing through the entire list each time
870 d9dff0e5 2020-12-26 stsp * an element is inserted.
872 d9dff0e5 2020-12-26 stsp re = TAILQ_LAST(refs, got_reflist_head);
873 7a3c76f5 2019-02-05 stsp while (re) {
874 b8bad2ba 2019-08-23 stsp err = (*cmp_cb)(cmp_arg, &cmp, re->ref, new->ref);
876 b8bad2ba 2019-08-23 stsp return err;
877 e397b6db 2019-02-04 stsp if (cmp == 0) {
878 27a1ed03 2019-03-15 stsp /* duplicate */
880 505287be 2019-03-15 stsp *newp = NULL;
881 7a3c76f5 2019-02-05 stsp return NULL;
882 d9dff0e5 2020-12-26 stsp } else if (cmp < 0) {
883 d9dff0e5 2020-12-26 stsp TAILQ_INSERT_AFTER(refs, re, new, entry);
884 7a3c76f5 2019-02-05 stsp return NULL;
886 d9dff0e5 2020-12-26 stsp re = TAILQ_PREV(re, got_reflist_head, entry);
889 d9dff0e5 2020-12-26 stsp TAILQ_INSERT_HEAD(refs, new, entry);
890 199a4027 2019-02-02 stsp return NULL;
893 a04f49d2 2019-02-04 stsp static const struct got_error *
894 29b5c214 2019-02-04 stsp gather_on_disk_refs(struct got_reflist_head *refs, const char *path_refs,
895 b8bad2ba 2019-08-23 stsp const char *subdir, struct got_repository *repo,
896 b8bad2ba 2019-08-23 stsp got_ref_cmp_cb cmp_cb, void *cmp_arg)
898 a04f49d2 2019-02-04 stsp const struct got_error *err = NULL;
899 a04f49d2 2019-02-04 stsp DIR *d = NULL;
900 a04f49d2 2019-02-04 stsp char *path_subdir;
902 b2070a3f 2020-03-22 stsp while (subdir[0] == '/')
905 a04f49d2 2019-02-04 stsp if (asprintf(&path_subdir, "%s/%s", path_refs, subdir) == -1)
906 638f9024 2019-05-13 stsp return got_error_from_errno("asprintf");
908 a04f49d2 2019-02-04 stsp d = opendir(path_subdir);
909 a04f49d2 2019-02-04 stsp if (d == NULL)
913 a04f49d2 2019-02-04 stsp struct dirent *dent;
914 a04f49d2 2019-02-04 stsp struct got_reference *ref;
915 a04f49d2 2019-02-04 stsp char *child;
918 a04f49d2 2019-02-04 stsp dent = readdir(d);
919 a04f49d2 2019-02-04 stsp if (dent == NULL)
922 a04f49d2 2019-02-04 stsp if (strcmp(dent->d_name, ".") == 0 ||
923 a04f49d2 2019-02-04 stsp strcmp(dent->d_name, "..") == 0)
926 20ccae39 2020-07-21 stsp err = got_path_dirent_type(&type, path_subdir, dent);
930 20ccae39 2020-07-21 stsp switch (type) {
931 a04f49d2 2019-02-04 stsp case DT_REG:
932 2f17228e 2019-05-12 stsp err = open_ref(&ref, path_refs, subdir, dent->d_name,
937 505287be 2019-03-15 stsp struct got_reflist_entry *new;
938 72acb3d8 2021-08-06 stsp err = got_reflist_insert(&new, refs, ref,
939 b8bad2ba 2019-08-23 stsp cmp_cb, cmp_arg);
940 505287be 2019-03-15 stsp if (err || new == NULL /* duplicate */)
941 505287be 2019-03-15 stsp got_ref_close(ref);
946 a04f49d2 2019-02-04 stsp case DT_DIR:
947 a04f49d2 2019-02-04 stsp if (asprintf(&child, "%s%s%s", subdir,
948 a04f49d2 2019-02-04 stsp subdir[0] == '\0' ? "" : "/", dent->d_name) == -1) {
949 638f9024 2019-05-13 stsp err = got_error_from_errno("asprintf");
952 b8bad2ba 2019-08-23 stsp err = gather_on_disk_refs(refs, path_refs, child, repo,
953 b8bad2ba 2019-08-23 stsp cmp_cb, cmp_arg);
954 a04f49d2 2019-02-04 stsp free(child);
962 a04f49d2 2019-02-04 stsp closedir(d);
963 a04f49d2 2019-02-04 stsp free(path_subdir);
964 a04f49d2 2019-02-04 stsp return err;
967 199a4027 2019-02-02 stsp const struct got_error *
968 29606af7 2019-08-23 stsp got_ref_list(struct got_reflist_head *refs, struct got_repository *repo,
969 b8bad2ba 2019-08-23 stsp const char *ref_namespace, got_ref_cmp_cb cmp_cb, void *cmp_arg)
971 199a4027 2019-02-02 stsp const struct got_error *err;
972 a04f49d2 2019-02-04 stsp char *packed_refs_path, *path_refs = NULL;
973 b2070a3f 2020-03-22 stsp char *abs_namespace = NULL;
974 b2070a3f 2020-03-22 stsp char *buf = NULL, *ondisk_ref_namespace = NULL;
975 9bdd68dd 2020-01-02 naddy char *line = NULL;
976 29b5c214 2019-02-04 stsp FILE *f = NULL;
977 199a4027 2019-02-02 stsp struct got_reference *ref;
978 505287be 2019-03-15 stsp struct got_reflist_entry *new;
980 29606af7 2019-08-23 stsp if (ref_namespace == NULL || ref_namespace[0] == '\0') {
981 29606af7 2019-08-23 stsp path_refs = get_refs_dir_path(repo, GOT_REF_HEAD);
982 29606af7 2019-08-23 stsp if (path_refs == NULL) {
983 29606af7 2019-08-23 stsp err = got_error_from_errno("get_refs_dir_path");
986 29606af7 2019-08-23 stsp err = open_ref(&ref, path_refs, "", GOT_REF_HEAD, 0);
989 72acb3d8 2021-08-06 stsp err = got_reflist_insert(&new, refs, ref, cmp_cb, cmp_arg);
990 29606af7 2019-08-23 stsp if (err || new == NULL /* duplicate */)
991 29606af7 2019-08-23 stsp got_ref_close(ref);
992 f68a7890 2020-03-19 stsp if (err && err->code != GOT_ERR_NOT_REF)
995 b2070a3f 2020-03-22 stsp /* Try listing a single reference. */
996 b2070a3f 2020-03-22 stsp const char *refname = ref_namespace;
997 b2070a3f 2020-03-22 stsp path_refs = get_refs_dir_path(repo, refname);
998 b2070a3f 2020-03-22 stsp if (path_refs == NULL) {
999 b2070a3f 2020-03-22 stsp err = got_error_from_errno("get_refs_dir_path");
1000 b2070a3f 2020-03-22 stsp goto done;
1002 b2070a3f 2020-03-22 stsp err = open_ref(&ref, path_refs, "", refname, 0);
1003 b2070a3f 2020-03-22 stsp if (err) {
1004 b2070a3f 2020-03-22 stsp if (err->code != GOT_ERR_NOT_REF)
1005 b2070a3f 2020-03-22 stsp goto done;
1006 b2070a3f 2020-03-22 stsp /* Try to look up references in a given namespace. */
1008 72acb3d8 2021-08-06 stsp err = got_reflist_insert(&new, refs, ref,
1009 b2070a3f 2020-03-22 stsp cmp_cb, cmp_arg);
1010 b2070a3f 2020-03-22 stsp if (err || new == NULL /* duplicate */)
1011 b2070a3f 2020-03-22 stsp got_ref_close(ref);
1012 b2070a3f 2020-03-22 stsp return err;
1016 b2070a3f 2020-03-22 stsp if (ref_namespace) {
1017 b2070a3f 2020-03-22 stsp size_t len;
1018 b2070a3f 2020-03-22 stsp /* Canonicalize the path to eliminate double-slashes if any. */
1019 b2070a3f 2020-03-22 stsp if (asprintf(&abs_namespace, "/%s", ref_namespace) == -1) {
1020 b2070a3f 2020-03-22 stsp err = got_error_from_errno("asprintf");
1021 b2070a3f 2020-03-22 stsp goto done;
1023 b2070a3f 2020-03-22 stsp len = strlen(abs_namespace) + 1;
1024 b2070a3f 2020-03-22 stsp buf = malloc(len);
1025 b2070a3f 2020-03-22 stsp if (buf == NULL) {
1026 b2070a3f 2020-03-22 stsp err = got_error_from_errno("malloc");
1027 b2070a3f 2020-03-22 stsp goto done;
1029 b2070a3f 2020-03-22 stsp err = got_canonpath(abs_namespace, buf, len);
1031 b2070a3f 2020-03-22 stsp goto done;
1032 b2070a3f 2020-03-22 stsp ondisk_ref_namespace = buf;
1033 b2070a3f 2020-03-22 stsp while (ondisk_ref_namespace[0] == '/')
1034 b2070a3f 2020-03-22 stsp ondisk_ref_namespace++;
1035 b2070a3f 2020-03-22 stsp if (strncmp(ondisk_ref_namespace, "refs/", 5) == 0)
1036 b2070a3f 2020-03-22 stsp ondisk_ref_namespace += 5;
1037 b2070a3f 2020-03-22 stsp else if (strcmp(ondisk_ref_namespace, "refs") == 0)
1038 b2070a3f 2020-03-22 stsp ondisk_ref_namespace = "";
1041 29b5c214 2019-02-04 stsp /* Gather on-disk refs before parsing packed-refs. */
1042 29b5c214 2019-02-04 stsp free(path_refs);
1043 29b5c214 2019-02-04 stsp path_refs = get_refs_dir_path(repo, "");
1044 29b5c214 2019-02-04 stsp if (path_refs == NULL) {
1045 638f9024 2019-05-13 stsp err = got_error_from_errno("get_refs_dir_path");
1046 29b5c214 2019-02-04 stsp goto done;
1048 29606af7 2019-08-23 stsp err = gather_on_disk_refs(refs, path_refs,
1049 6aeab596 2019-08-28 stsp ondisk_ref_namespace ? ondisk_ref_namespace : "", repo,
1050 6aeab596 2019-08-28 stsp cmp_cb, cmp_arg);
1052 29b5c214 2019-02-04 stsp goto done;
1055 29b5c214 2019-02-04 stsp * The packed-refs file may contain redundant entries, in which
1056 29b5c214 2019-02-04 stsp * case on-disk refs take precedence.
1058 199a4027 2019-02-02 stsp packed_refs_path = got_repo_get_path_packed_refs(repo);
1059 29b5c214 2019-02-04 stsp if (packed_refs_path == NULL) {
1060 638f9024 2019-05-13 stsp err = got_error_from_errno("got_repo_get_path_packed_refs");
1061 29b5c214 2019-02-04 stsp goto done;
1064 199a4027 2019-02-02 stsp f = fopen(packed_refs_path, "r");
1065 199a4027 2019-02-02 stsp free(packed_refs_path);
1067 7a90b680 2020-01-02 naddy size_t linesize = 0;
1068 9bdd68dd 2020-01-02 naddy ssize_t linelen;
1069 3f338f0a 2021-07-27 stsp struct stat sb;
1071 3f338f0a 2021-07-27 stsp if (fstat(fileno(f), &sb) == -1) {
1072 3f338f0a 2021-07-27 stsp err = got_error_from_errno2("fstat", packed_refs_path);
1073 3f338f0a 2021-07-27 stsp goto done;
1076 9bdd68dd 2020-01-02 naddy linelen = getline(&line, &linesize, f);
1077 9bdd68dd 2020-01-02 naddy if (linelen == -1) {
1078 0bb4abae 2019-03-15 stsp if (feof(f))
1080 0bb4abae 2019-03-15 stsp err = got_ferror(f, GOT_ERR_BAD_REF_DATA);
1081 0bb4abae 2019-03-15 stsp goto done;
1083 9bdd68dd 2020-01-02 naddy if (linelen > 0 && line[linelen - 1] == '\n')
1084 9bdd68dd 2020-01-02 naddy line[linelen - 1] = '\0';
1085 3f338f0a 2021-07-27 stsp err = parse_packed_ref_line(&ref, NULL, line,
1086 3f338f0a 2021-07-27 stsp sb.st_mtime);
1088 199a4027 2019-02-02 stsp goto done;
1089 76b4ead2 2019-02-03 stsp if (ref) {
1090 29606af7 2019-08-23 stsp if (ref_namespace) {
1091 29606af7 2019-08-23 stsp const char *name;
1092 29606af7 2019-08-23 stsp name = got_ref_get_name(ref);
1093 b2070a3f 2020-03-22 stsp if (!got_path_is_child(name,
1094 b2070a3f 2020-03-22 stsp ref_namespace,
1095 b2070a3f 2020-03-22 stsp strlen(ref_namespace))) {
1096 29606af7 2019-08-23 stsp got_ref_close(ref);
1100 72acb3d8 2021-08-06 stsp err = got_reflist_insert(&new, refs, ref,
1101 b8bad2ba 2019-08-23 stsp cmp_cb, cmp_arg);
1102 505287be 2019-03-15 stsp if (err || new == NULL /* duplicate */)
1103 505287be 2019-03-15 stsp got_ref_close(ref);
1105 76b4ead2 2019-02-03 stsp goto done;
1110 b2070a3f 2020-03-22 stsp free(abs_namespace);
1111 b2070a3f 2020-03-22 stsp free(buf);
1112 9bdd68dd 2020-01-02 naddy free(line);
1113 a04f49d2 2019-02-04 stsp free(path_refs);
1114 56b63ca4 2021-01-22 stsp if (f && fclose(f) == EOF && err == NULL)
1115 638f9024 2019-05-13 stsp err = got_error_from_errno("fclose");
1116 199a4027 2019-02-02 stsp return err;
1120 e2e879a0 2019-03-11 stsp got_ref_list_free(struct got_reflist_head *refs)
1122 e2e879a0 2019-03-11 stsp struct got_reflist_entry *re;
1124 d9dff0e5 2020-12-26 stsp while ((re = TAILQ_FIRST(refs))) {
1125 d9dff0e5 2020-12-26 stsp TAILQ_REMOVE(refs, re, entry);
1126 af8a5c4a 2021-05-21 stsp got_ref_close(re->ref);
1133 b249b824 2019-05-09 stsp got_ref_is_symbolic(struct got_reference *ref)
1135 b249b824 2019-05-09 stsp return (ref->flags & GOT_REF_IS_SYMBOLIC);
1138 b249b824 2019-05-09 stsp const struct got_error *
1139 b249b824 2019-05-09 stsp got_ref_change_ref(struct got_reference *ref, struct got_object_id *id)
1141 b249b824 2019-05-09 stsp if (ref->flags & GOT_REF_IS_SYMBOLIC)
1142 b249b824 2019-05-09 stsp return got_error(GOT_ERR_BAD_REF_TYPE);
1144 b249b824 2019-05-09 stsp memcpy(ref->ref.ref.sha1, id->sha1, sizeof(ref->ref.ref.sha1));
1145 b249b824 2019-05-09 stsp return NULL;
1148 9e672c74 2019-03-11 stsp const struct got_error *
1149 d7b899ab 2020-03-25 stsp got_ref_change_symref(struct got_reference *ref, const char *refname)
1151 b249b824 2019-05-09 stsp char *new_name;
1153 b249b824 2019-05-09 stsp if ((ref->flags & GOT_REF_IS_SYMBOLIC) == 0)
1154 b249b824 2019-05-09 stsp return got_error(GOT_ERR_BAD_REF_TYPE);
1156 b249b824 2019-05-09 stsp new_name = strdup(refname);
1157 b249b824 2019-05-09 stsp if (new_name == NULL)
1158 638f9024 2019-05-13 stsp return got_error_from_errno("strdup");
1160 d7b899ab 2020-03-25 stsp free(ref->ref.symref.ref);
1161 d7b899ab 2020-03-25 stsp ref->ref.symref.ref = new_name;
1162 b249b824 2019-05-09 stsp return NULL;
1165 b249b824 2019-05-09 stsp const struct got_error *
1166 e8a967e0 2020-03-21 stsp got_ref_change_symref_to_ref(struct got_reference *symref,
1167 e8a967e0 2020-03-21 stsp struct got_object_id *id)
1169 e8a967e0 2020-03-21 stsp if ((symref->flags & GOT_REF_IS_SYMBOLIC) == 0)
1170 e8a967e0 2020-03-21 stsp return got_error(GOT_ERR_BAD_REF_TYPE);
1172 e8a967e0 2020-03-21 stsp symref->ref.ref.name = symref->ref.symref.name;
1173 e8a967e0 2020-03-21 stsp memcpy(symref->ref.ref.sha1, id->sha1, SHA1_DIGEST_LENGTH);
1174 e8a967e0 2020-03-21 stsp symref->flags &= ~GOT_REF_IS_SYMBOLIC;
1175 e8a967e0 2020-03-21 stsp return NULL;
1178 e8a967e0 2020-03-21 stsp const struct got_error *
1179 9e672c74 2019-03-11 stsp got_ref_write(struct got_reference *ref, struct got_repository *repo)
1181 9e672c74 2019-03-11 stsp const struct got_error *err = NULL, *unlock_err = NULL;
1182 9e672c74 2019-03-11 stsp const char *name = got_ref_get_name(ref);
1183 9e672c74 2019-03-11 stsp char *path_refs = NULL, *path = NULL, *tmppath = NULL;
1184 9e672c74 2019-03-11 stsp struct got_lockfile *lf = NULL;
1185 9e672c74 2019-03-11 stsp FILE *f = NULL;
1187 9e672c74 2019-03-11 stsp struct stat sb;
1189 9e672c74 2019-03-11 stsp path_refs = get_refs_dir_path(repo, name);
1190 9e672c74 2019-03-11 stsp if (path_refs == NULL) {
1191 638f9024 2019-05-13 stsp err = got_error_from_errno2("get_refs_dir_path", name);
1192 9e672c74 2019-03-11 stsp goto done;
1195 9e672c74 2019-03-11 stsp if (asprintf(&path, "%s/%s", path_refs, name) == -1) {
1196 638f9024 2019-05-13 stsp err = got_error_from_errno("asprintf");
1197 9e672c74 2019-03-11 stsp goto done;
1200 9e672c74 2019-03-11 stsp err = got_opentemp_named(&tmppath, &f, path);
1201 49c7094f 2019-03-11 stsp if (err) {
1202 d1667f0d 2019-03-11 stsp char *parent;
1203 49c7094f 2019-03-11 stsp if (!(err->code == GOT_ERR_ERRNO && errno == ENOENT))
1204 5e1c9f23 2019-03-11 stsp goto done;
1205 d1667f0d 2019-03-11 stsp err = got_path_dirname(&parent, path);
1207 0cd1c46a 2019-03-11 stsp goto done;
1208 0cd1c46a 2019-03-11 stsp err = got_path_mkdir(parent);
1209 5e1c9f23 2019-03-11 stsp free(parent);
1211 0cd1c46a 2019-03-11 stsp goto done;
1212 0cd1c46a 2019-03-11 stsp err = got_opentemp_named(&tmppath, &f, path);
1214 0cd1c46a 2019-03-11 stsp goto done;
1217 9e672c74 2019-03-11 stsp if (ref->flags & GOT_REF_IS_SYMBOLIC) {
1218 9e672c74 2019-03-11 stsp n = fprintf(f, "ref: %s\n", ref->ref.symref.ref);
1219 9e672c74 2019-03-11 stsp if (n != strlen(ref->ref.symref.ref) + 6) {
1220 9e672c74 2019-03-11 stsp err = got_ferror(f, GOT_ERR_IO);
1221 9e672c74 2019-03-11 stsp goto done;
1224 9e672c74 2019-03-11 stsp char hex[SHA1_DIGEST_STRING_LENGTH];
1225 9e672c74 2019-03-11 stsp if (got_sha1_digest_to_str(ref->ref.ref.sha1, hex,
1226 9e672c74 2019-03-11 stsp sizeof(hex)) == NULL) {
1227 9e672c74 2019-03-11 stsp err = got_error(GOT_ERR_BAD_REF_DATA);
1228 9e672c74 2019-03-11 stsp goto done;
1230 9e672c74 2019-03-11 stsp n = fprintf(f, "%s\n", hex);
1231 8fa2f096 2019-03-11 stsp if (n != sizeof(hex)) {
1232 9e672c74 2019-03-11 stsp err = got_ferror(f, GOT_ERR_IO);
1233 9e672c74 2019-03-11 stsp goto done;
1237 2f17228e 2019-05-12 stsp if (ref->lf == NULL) {
1238 5345b4c7 2021-07-06 stsp err = got_lockfile_lock(&lf, path, -1);
1240 2f17228e 2019-05-12 stsp goto done;
1243 9e672c74 2019-03-11 stsp /* XXX: check if old content matches our expectations? */
1245 0cd1c46a 2019-03-11 stsp if (stat(path, &sb) != 0) {
1246 0cd1c46a 2019-03-11 stsp if (errno != ENOENT) {
1247 638f9024 2019-05-13 stsp err = got_error_from_errno2("stat", path);
1248 0cd1c46a 2019-03-11 stsp goto done;
1250 0cd1c46a 2019-03-11 stsp sb.st_mode = GOT_DEFAULT_FILE_MODE;
1253 3818e3c4 2020-11-01 naddy if (fchmod(fileno(f), sb.st_mode) != 0) {
1254 3818e3c4 2020-11-01 naddy err = got_error_from_errno2("fchmod", tmppath);
1255 3818e3c4 2020-11-01 naddy goto done;
1258 9e672c74 2019-03-11 stsp if (rename(tmppath, path) != 0) {
1259 638f9024 2019-05-13 stsp err = got_error_from_errno3("rename", tmppath, path);
1260 9e672c74 2019-03-11 stsp goto done;
1262 9e672c74 2019-03-11 stsp free(tmppath);
1263 9e672c74 2019-03-11 stsp tmppath = NULL;
1265 3f338f0a 2021-07-27 stsp if (stat(path, &sb) == -1) {
1266 3f338f0a 2021-07-27 stsp err = got_error_from_errno2("stat", path);
1267 3f338f0a 2021-07-27 stsp goto done;
1269 3f338f0a 2021-07-27 stsp ref->mtime = sb.st_mtime;
1271 2f17228e 2019-05-12 stsp if (ref->lf == NULL && lf)
1272 5345b4c7 2021-07-06 stsp unlock_err = got_lockfile_unlock(lf, -1);
1274 56b63ca4 2021-01-22 stsp if (fclose(f) == EOF && err == NULL)
1275 638f9024 2019-05-13 stsp err = got_error_from_errno("fclose");
1277 9e672c74 2019-03-11 stsp free(path_refs);
1278 9e672c74 2019-03-11 stsp free(path);
1279 9e672c74 2019-03-11 stsp if (tmppath) {
1280 9e672c74 2019-03-11 stsp if (unlink(tmppath) != 0 && err == NULL)
1281 638f9024 2019-05-13 stsp err = got_error_from_errno2("unlink", tmppath);
1282 9e672c74 2019-03-11 stsp free(tmppath);
1284 2d2e1378 2019-03-11 stsp return err ? err : unlock_err;
1287 598a8b91 2019-03-15 stsp static const struct got_error *
1288 598a8b91 2019-03-15 stsp delete_packed_ref(struct got_reference *delref, struct got_repository *repo)
1290 598a8b91 2019-03-15 stsp const struct got_error *err = NULL, *unlock_err = NULL;
1291 598a8b91 2019-03-15 stsp struct got_lockfile *lf = NULL;
1292 598a8b91 2019-03-15 stsp FILE *f = NULL, *tmpf = NULL;
1293 9bdd68dd 2020-01-02 naddy char *line = NULL, *packed_refs_path, *tmppath = NULL;
1294 7a90b680 2020-01-02 naddy size_t linesize = 0;
1295 598a8b91 2019-03-15 stsp struct got_reflist_head refs;
1296 598a8b91 2019-03-15 stsp int found_delref = 0;
1298 598a8b91 2019-03-15 stsp /* The packed-refs file does not cotain symbolic references. */
1299 598a8b91 2019-03-15 stsp if (delref->flags & GOT_REF_IS_SYMBOLIC)
1300 598a8b91 2019-03-15 stsp return got_error(GOT_ERR_BAD_REF_DATA);
1302 d9dff0e5 2020-12-26 stsp TAILQ_INIT(&refs);
1304 598a8b91 2019-03-15 stsp packed_refs_path = got_repo_get_path_packed_refs(repo);
1305 598a8b91 2019-03-15 stsp if (packed_refs_path == NULL)
1306 638f9024 2019-05-13 stsp return got_error_from_errno("got_repo_get_path_packed_refs");
1308 598a8b91 2019-03-15 stsp err = got_opentemp_named(&tmppath, &tmpf, packed_refs_path);
1310 598a8b91 2019-03-15 stsp goto done;
1312 2f17228e 2019-05-12 stsp if (delref->lf == NULL) {
1313 5345b4c7 2021-07-06 stsp err = got_lockfile_lock(&lf, packed_refs_path, -1);
1315 2f17228e 2019-05-12 stsp goto done;
1318 598a8b91 2019-03-15 stsp f = fopen(packed_refs_path, "r");
1319 598a8b91 2019-03-15 stsp if (f == NULL) {
1320 638f9024 2019-05-13 stsp err = got_error_from_errno2("fopen", packed_refs_path);
1321 598a8b91 2019-03-15 stsp goto done;
1324 9bdd68dd 2020-01-02 naddy ssize_t linelen;
1325 598a8b91 2019-03-15 stsp struct got_reference *ref;
1326 598a8b91 2019-03-15 stsp struct got_reflist_entry *new;
1328 9bdd68dd 2020-01-02 naddy linelen = getline(&line, &linesize, f);
1329 9bdd68dd 2020-01-02 naddy if (linelen == -1) {
1330 598a8b91 2019-03-15 stsp if (feof(f))
1332 598a8b91 2019-03-15 stsp err = got_ferror(f, GOT_ERR_BAD_REF_DATA);
1333 598a8b91 2019-03-15 stsp goto done;
1335 9bdd68dd 2020-01-02 naddy if (linelen > 0 && line[linelen - 1] == '\n')
1336 9bdd68dd 2020-01-02 naddy line[linelen - 1] = '\0';
1337 3f338f0a 2021-07-27 stsp err = parse_packed_ref_line(&ref, NULL, line, 0);
1339 598a8b91 2019-03-15 stsp goto done;
1340 598a8b91 2019-03-15 stsp if (ref == NULL)
1343 598a8b91 2019-03-15 stsp if (strcmp(ref->ref.ref.name, delref->ref.ref.name) == 0 &&
1344 598a8b91 2019-03-15 stsp memcmp(ref->ref.ref.sha1, delref->ref.ref.sha1,
1345 598a8b91 2019-03-15 stsp sizeof(delref->ref.ref.sha1)) == 0) {
1346 598a8b91 2019-03-15 stsp found_delref = 1;
1347 598a8b91 2019-03-15 stsp got_ref_close(ref);
1351 72acb3d8 2021-08-06 stsp err = got_reflist_insert(&new, &refs, ref,
1352 b8bad2ba 2019-08-23 stsp got_ref_cmp_by_name, NULL);
1353 598a8b91 2019-03-15 stsp if (err || new == NULL /* duplicate */)
1354 598a8b91 2019-03-15 stsp got_ref_close(ref);
1356 598a8b91 2019-03-15 stsp goto done;
1359 598a8b91 2019-03-15 stsp if (found_delref) {
1360 598a8b91 2019-03-15 stsp struct got_reflist_entry *re;
1362 598a8b91 2019-03-15 stsp struct stat sb;
1364 598a8b91 2019-03-15 stsp n = fprintf(tmpf, "%s\n", GOT_PACKED_REFS_HEADER);
1365 598a8b91 2019-03-15 stsp if (n != sizeof(GOT_PACKED_REFS_HEADER)) {
1366 598a8b91 2019-03-15 stsp err = got_ferror(f, GOT_ERR_IO);
1367 598a8b91 2019-03-15 stsp goto done;
1370 d9dff0e5 2020-12-26 stsp TAILQ_FOREACH(re, &refs, entry) {
1371 9dd14b99 2021-09-28 naddy char hex[SHA1_DIGEST_STRING_LENGTH];
1373 598a8b91 2019-03-15 stsp if (got_sha1_digest_to_str(re->ref->ref.ref.sha1, hex,
1374 598a8b91 2019-03-15 stsp sizeof(hex)) == NULL) {
1375 598a8b91 2019-03-15 stsp err = got_error(GOT_ERR_BAD_REF_DATA);
1376 598a8b91 2019-03-15 stsp goto done;
1378 598a8b91 2019-03-15 stsp n = fprintf(tmpf, "%s ", hex);
1379 598a8b91 2019-03-15 stsp if (n != sizeof(hex)) {
1380 598a8b91 2019-03-15 stsp err = got_ferror(f, GOT_ERR_IO);
1381 598a8b91 2019-03-15 stsp goto done;
1383 598a8b91 2019-03-15 stsp n = fprintf(tmpf, "%s\n", re->ref->ref.ref.name);
1384 598a8b91 2019-03-15 stsp if (n != strlen(re->ref->ref.ref.name) + 1) {
1385 598a8b91 2019-03-15 stsp err = got_ferror(f, GOT_ERR_IO);
1386 598a8b91 2019-03-15 stsp goto done;
1390 598a8b91 2019-03-15 stsp if (fflush(tmpf) != 0) {
1391 638f9024 2019-05-13 stsp err = got_error_from_errno("fflush");
1392 598a8b91 2019-03-15 stsp goto done;
1395 3818e3c4 2020-11-01 naddy if (fstat(fileno(f), &sb) != 0) {
1396 598a8b91 2019-03-15 stsp if (errno != ENOENT) {
1397 3818e3c4 2020-11-01 naddy err = got_error_from_errno2("fstat",
1398 230a42bd 2019-05-11 jcs packed_refs_path);
1399 598a8b91 2019-03-15 stsp goto done;
1401 598a8b91 2019-03-15 stsp sb.st_mode = GOT_DEFAULT_FILE_MODE;
1404 3818e3c4 2020-11-01 naddy if (fchmod(fileno(tmpf), sb.st_mode) != 0) {
1405 3818e3c4 2020-11-01 naddy err = got_error_from_errno2("fchmod", tmppath);
1406 598a8b91 2019-03-15 stsp goto done;
1409 3818e3c4 2020-11-01 naddy if (rename(tmppath, packed_refs_path) != 0) {
1410 3818e3c4 2020-11-01 naddy err = got_error_from_errno3("rename", tmppath,
1411 230a42bd 2019-05-11 jcs packed_refs_path);
1412 598a8b91 2019-03-15 stsp goto done;
1416 2f17228e 2019-05-12 stsp if (delref->lf == NULL && lf)
1417 5345b4c7 2021-07-06 stsp unlock_err = got_lockfile_unlock(lf, -1);
1419 56b63ca4 2021-01-22 stsp if (fclose(f) == EOF && err == NULL)
1420 638f9024 2019-05-13 stsp err = got_error_from_errno("fclose");
1422 598a8b91 2019-03-15 stsp if (tmpf) {
1423 598a8b91 2019-03-15 stsp unlink(tmppath);
1424 56b63ca4 2021-01-22 stsp if (fclose(tmpf) == EOF && err == NULL)
1425 638f9024 2019-05-13 stsp err = got_error_from_errno("fclose");
1427 598a8b91 2019-03-15 stsp free(tmppath);
1428 598a8b91 2019-03-15 stsp free(packed_refs_path);
1429 9bdd68dd 2020-01-02 naddy free(line);
1430 598a8b91 2019-03-15 stsp got_ref_list_free(&refs);
1431 598a8b91 2019-03-15 stsp return err ? err : unlock_err;
1434 2a104ff6 2020-09-21 stsp static const struct got_error *
1435 2a104ff6 2020-09-21 stsp delete_loose_ref(struct got_reference *ref, struct got_repository *repo)
1437 2d2e1378 2019-03-11 stsp const struct got_error *err = NULL, *unlock_err = NULL;
1438 2d2e1378 2019-03-11 stsp const char *name = got_ref_get_name(ref);
1439 2d2e1378 2019-03-11 stsp char *path_refs = NULL, *path = NULL;
1440 2d2e1378 2019-03-11 stsp struct got_lockfile *lf = NULL;
1442 2d2e1378 2019-03-11 stsp path_refs = get_refs_dir_path(repo, name);
1443 2d2e1378 2019-03-11 stsp if (path_refs == NULL) {
1444 638f9024 2019-05-13 stsp err = got_error_from_errno2("get_refs_dir_path", name);
1445 2d2e1378 2019-03-11 stsp goto done;
1448 2d2e1378 2019-03-11 stsp if (asprintf(&path, "%s/%s", path_refs, name) == -1) {
1449 638f9024 2019-05-13 stsp err = got_error_from_errno("asprintf");
1450 2d2e1378 2019-03-11 stsp goto done;
1453 2f17228e 2019-05-12 stsp if (ref->lf == NULL) {
1454 5345b4c7 2021-07-06 stsp err = got_lockfile_lock(&lf, path, -1);
1456 2f17228e 2019-05-12 stsp goto done;
1459 2d2e1378 2019-03-11 stsp /* XXX: check if old content matches our expectations? */
1461 2d2e1378 2019-03-11 stsp if (unlink(path) != 0)
1462 638f9024 2019-05-13 stsp err = got_error_from_errno2("unlink", path);
1464 2f17228e 2019-05-12 stsp if (ref->lf == NULL && lf)
1465 5345b4c7 2021-07-06 stsp unlock_err = got_lockfile_unlock(lf, -1);
1467 2d2e1378 2019-03-11 stsp free(path_refs);
1468 2d2e1378 2019-03-11 stsp free(path);
1469 9e672c74 2019-03-11 stsp return err ? err : unlock_err;
1472 2a104ff6 2020-09-21 stsp const struct got_error *
1473 2a104ff6 2020-09-21 stsp got_ref_delete(struct got_reference *ref, struct got_repository *repo)
1475 2a104ff6 2020-09-21 stsp const struct got_error *err = NULL;
1476 2a104ff6 2020-09-21 stsp struct got_reference *ref2;
1478 2a104ff6 2020-09-21 stsp if (ref->flags & GOT_REF_IS_PACKED) {
1479 2a104ff6 2020-09-21 stsp err = delete_packed_ref(ref, repo);
1481 2a104ff6 2020-09-21 stsp return err;
1483 a1c4175c 2020-09-22 stsp err = got_ref_open(&ref2, repo, got_ref_get_name(ref), 0);
1484 2a104ff6 2020-09-21 stsp if (err) {
1485 2a104ff6 2020-09-21 stsp if (err->code == GOT_ERR_NOT_REF)
1486 2a104ff6 2020-09-21 stsp return NULL;
1487 2a104ff6 2020-09-21 stsp return err;
1490 2a104ff6 2020-09-21 stsp err = delete_loose_ref(ref2, repo);
1491 2a104ff6 2020-09-21 stsp got_ref_close(ref2);
1492 2a104ff6 2020-09-21 stsp return err;
1494 2a104ff6 2020-09-21 stsp err = delete_loose_ref(ref, repo);
1496 2a104ff6 2020-09-21 stsp return err;
1498 a1c4175c 2020-09-22 stsp err = got_ref_open(&ref2, repo, got_ref_get_name(ref), 0);
1499 2a104ff6 2020-09-21 stsp if (err) {
1500 2a104ff6 2020-09-21 stsp if (err->code == GOT_ERR_NOT_REF)
1501 2a104ff6 2020-09-21 stsp return NULL;
1502 2a104ff6 2020-09-21 stsp return err;
1505 2a104ff6 2020-09-21 stsp err = delete_packed_ref(ref2, repo);
1506 2a104ff6 2020-09-21 stsp got_ref_close(ref2);
1507 2a104ff6 2020-09-21 stsp return err;
1511 2f17228e 2019-05-12 stsp const struct got_error *
1512 2f17228e 2019-05-12 stsp got_ref_unlock(struct got_reference *ref)
1514 2f17228e 2019-05-12 stsp const struct got_error *err;
1515 5345b4c7 2021-07-06 stsp err = got_lockfile_unlock(ref->lf, -1);
1516 2f17228e 2019-05-12 stsp ref->lf = NULL;
1517 2f17228e 2019-05-12 stsp return err;
1520 7b5b670e 2020-12-25 stsp struct got_reflist_object_id_map {
1521 7b5b670e 2020-12-25 stsp struct got_object_idset *idset;
1524 7b5b670e 2020-12-25 stsp struct got_reflist_object_id_map_entry {
1525 7b5b670e 2020-12-25 stsp struct got_reflist_head refs;
1528 24202e46 2020-12-26 stsp static const struct got_error *
1529 24202e46 2020-12-26 stsp add_object_id_map_entry(struct got_object_idset *idset,
1530 24202e46 2020-12-26 stsp struct got_object_id *id, struct got_reflist_entry *re)
1532 24202e46 2020-12-26 stsp const struct got_error *err = NULL;
1533 24202e46 2020-12-26 stsp struct got_reflist_object_id_map_entry *ent;
1534 24202e46 2020-12-26 stsp struct got_reflist_entry *new;
1536 24202e46 2020-12-26 stsp ent = got_object_idset_get(idset, id);
1537 24202e46 2020-12-26 stsp if (ent == NULL) {
1538 24202e46 2020-12-26 stsp ent = malloc(sizeof(*ent));
1539 24202e46 2020-12-26 stsp if (ent == NULL)
1540 24202e46 2020-12-26 stsp return got_error_from_errno("malloc");
1542 24202e46 2020-12-26 stsp TAILQ_INIT(&ent->refs);
1543 24202e46 2020-12-26 stsp err = got_object_idset_add(idset, id, ent);
1545 24202e46 2020-12-26 stsp return err;
1548 24202e46 2020-12-26 stsp err = got_reflist_entry_dup(&new, re);
1550 24202e46 2020-12-26 stsp return err;
1552 24202e46 2020-12-26 stsp TAILQ_INSERT_TAIL(&ent->refs, new, entry);
1553 24202e46 2020-12-26 stsp return NULL;
1556 7b5b670e 2020-12-25 stsp const struct got_error *
1557 7b5b670e 2020-12-25 stsp got_reflist_object_id_map_create(struct got_reflist_object_id_map **map,
1558 7b5b670e 2020-12-25 stsp struct got_reflist_head *refs, struct got_repository *repo)
1560 7b5b670e 2020-12-25 stsp const struct got_error *err = NULL;
1561 7b5b670e 2020-12-25 stsp struct got_object_idset *idset;
1562 7b5b670e 2020-12-25 stsp struct got_object_id *id = NULL;
1563 7b5b670e 2020-12-25 stsp struct got_reflist_entry *re;
1565 7b5b670e 2020-12-25 stsp idset = got_object_idset_alloc();
1566 7b5b670e 2020-12-25 stsp if (idset == NULL)
1567 7b5b670e 2020-12-25 stsp return got_error_from_errno("got_object_idset_alloc");
1569 7b5b670e 2020-12-25 stsp *map = malloc(sizeof(**map));
1570 7b5b670e 2020-12-25 stsp if (*map == NULL) {
1571 7b5b670e 2020-12-25 stsp got_object_idset_free(idset);
1572 7b5b670e 2020-12-25 stsp return got_error_from_errno("malloc");
1574 7b5b670e 2020-12-25 stsp (*map)->idset = idset;
1576 d9dff0e5 2020-12-26 stsp TAILQ_FOREACH(re, refs, entry) {
1577 24202e46 2020-12-26 stsp struct got_tag_object *tag = NULL;
1579 7b5b670e 2020-12-25 stsp err = got_ref_resolve(&id, repo, re->ref);
1581 7b5b670e 2020-12-25 stsp goto done;
1583 24202e46 2020-12-26 stsp err = add_object_id_map_entry(idset, id, re);
1585 24202e46 2020-12-26 stsp goto done;
1587 24202e46 2020-12-26 stsp if (strstr(got_ref_get_name(re->ref), "/tags/") == NULL) {
1589 24202e46 2020-12-26 stsp id = NULL;
1593 24202e46 2020-12-26 stsp err = got_object_open_as_tag(&tag, repo, id);
1594 24202e46 2020-12-26 stsp if (err) {
1595 24202e46 2020-12-26 stsp if (err->code != GOT_ERR_OBJ_TYPE)
1596 7b5b670e 2020-12-25 stsp goto done;
1597 24202e46 2020-12-26 stsp /* Ref points at something other than a tag. */
1598 24202e46 2020-12-26 stsp err = NULL;
1599 24202e46 2020-12-26 stsp tag = NULL;
1601 24202e46 2020-12-26 stsp id = NULL;
1605 24202e46 2020-12-26 stsp err = add_object_id_map_entry(idset,
1606 24202e46 2020-12-26 stsp got_object_tag_get_object_id(tag), re);
1607 f0ff8d4c 2020-12-26 stsp got_object_tag_close(tag);
1609 7b5b670e 2020-12-25 stsp goto done;
1612 7b5b670e 2020-12-25 stsp id = NULL;
1616 7b5b670e 2020-12-25 stsp if (err) {
1617 f193b038 2020-12-26 stsp got_reflist_object_id_map_free(*map);
1618 7b5b670e 2020-12-25 stsp *map = NULL;
1620 a53af95f 2020-12-26 stsp return err;
1623 7b5b670e 2020-12-25 stsp struct got_reflist_head *
1624 7b5b670e 2020-12-25 stsp got_reflist_object_id_map_lookup(struct got_reflist_object_id_map *map,
1625 7b5b670e 2020-12-25 stsp struct got_object_id *id)
1627 7b5b670e 2020-12-25 stsp struct got_reflist_object_id_map_entry *ent;
1628 7b5b670e 2020-12-25 stsp ent = got_object_idset_get(map->idset, id);
1630 7b5b670e 2020-12-25 stsp return &ent->refs;
1631 7b5b670e 2020-12-25 stsp return NULL;
1634 7b5b670e 2020-12-25 stsp static const struct got_error *
1635 7b5b670e 2020-12-25 stsp free_id_map_entry(struct got_object_id *id, void *data, void *arg)
1637 7b5b670e 2020-12-25 stsp struct got_reflist_object_id_map_entry *ent = data;
1639 7b5b670e 2020-12-25 stsp got_ref_list_free(&ent->refs);
1640 7b5b670e 2020-12-25 stsp free(ent);
1641 7b5b670e 2020-12-25 stsp return NULL;
1645 f193b038 2020-12-26 stsp got_reflist_object_id_map_free(struct got_reflist_object_id_map *map)
1647 7b5b670e 2020-12-25 stsp got_object_idset_for_each(map->idset, free_id_map_entry, NULL);
1648 7b5b670e 2020-12-25 stsp got_object_idset_free(map->idset);
1649 7b5b670e 2020-12-25 stsp free(map);
