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 5261c201 2018-04-01 stsp #include <util.h>
30 5261c201 2018-04-01 stsp #include <zlib.h>
31 788c352e 2018-06-16 stsp #include <time.h>
32 0cd1c46a 2019-03-11 stsp #include <libgen.h>
34 5261c201 2018-04-01 stsp #include "got_error.h"
35 5261c201 2018-04-01 stsp #include "got_object.h"
36 5261c201 2018-04-01 stsp #include "got_repository.h"
37 5261c201 2018-04-01 stsp #include "got_reference.h"
38 9e672c74 2019-03-11 stsp #include "got_opentemp.h"
39 324d37e7 2019-05-11 stsp #include "got_path.h"
41 5261c201 2018-04-01 stsp #include "got_lib_sha1.h"
42 5261c201 2018-04-01 stsp #include "got_lib_delta.h"
43 63581804 2018-07-09 stsp #include "got_lib_inflate.h"
44 5261c201 2018-04-01 stsp #include "got_lib_object.h"
45 f77a24b0 2019-03-11 stsp #include "got_lib_lockfile.h"
47 fb79db15 2019-02-01 stsp #ifndef nitems
48 fb79db15 2019-02-01 stsp #define nitems(_a) (sizeof(_a) / sizeof((_a)[0]))
51 d1f2edc9 2018-06-13 stsp #define GOT_REF_HEADS "heads"
52 d1f2edc9 2018-06-13 stsp #define GOT_REF_TAGS "tags"
53 d1f2edc9 2018-06-13 stsp #define GOT_REF_REMOTES "remotes"
56 598a8b91 2019-03-15 stsp * We do not resolve tags yet, and don't yet care about sorting refs either,
57 598a8b91 2019-03-15 stsp * so packed-refs files we write contain a minimal header which disables all
58 598a8b91 2019-03-15 stsp * packed-refs "traits" supported by Git.
60 598a8b91 2019-03-15 stsp #define GOT_PACKED_REFS_HEADER "# pack-refs with:"
62 5261c201 2018-04-01 stsp /* A symbolic reference. */
63 5261c201 2018-04-01 stsp struct got_symref {
68 29e86f7a 2019-08-12 stsp #define GOT_REF_RECURSE_MAX 20
70 5261c201 2018-04-01 stsp /* A non-symbolic reference (there is no better designation). */
71 5261c201 2018-04-01 stsp struct got_ref {
73 5261c201 2018-04-01 stsp u_int8_t sha1[SHA1_DIGEST_LENGTH];
76 5261c201 2018-04-01 stsp /* A reference which points to an arbitrary object. */
77 5261c201 2018-04-01 stsp struct got_reference {
78 5261c201 2018-04-01 stsp unsigned int flags;
79 5261c201 2018-04-01 stsp #define GOT_REF_IS_SYMBOLIC 0x01
80 f9267c9a 2019-03-15 stsp #define GOT_REF_IS_PACKED 0x02
83 5261c201 2018-04-01 stsp struct got_ref ref;
84 5261c201 2018-04-01 stsp struct got_symref symref;
87 2f17228e 2019-05-12 stsp struct got_lockfile *lf;
90 5261c201 2018-04-01 stsp static const struct got_error *
91 f9267c9a 2019-03-15 stsp alloc_ref(struct got_reference **ref, const char *name,
92 f9267c9a 2019-03-15 stsp struct got_object_id *id, int flags)
94 f9267c9a 2019-03-15 stsp const struct got_error *err = NULL;
96 f9267c9a 2019-03-15 stsp *ref = calloc(1, sizeof(**ref));
97 f9267c9a 2019-03-15 stsp if (*ref == NULL)
98 638f9024 2019-05-13 stsp return got_error_from_errno("calloc");
100 80d5fc1f 2019-03-15 stsp memcpy((*ref)->ref.ref.sha1, id->sha1, sizeof((*ref)->ref.ref.sha1));
101 c980e470 2019-03-15 stsp (*ref)->flags = flags;
102 f9267c9a 2019-03-15 stsp (*ref)->ref.ref.name = strdup(name);
103 f9267c9a 2019-03-15 stsp if ((*ref)->ref.ref.name == NULL) {
104 638f9024 2019-05-13 stsp err = got_error_from_errno("strdup");
105 c980e470 2019-03-15 stsp got_ref_close(*ref);
106 f9267c9a 2019-03-15 stsp *ref = NULL;
108 f9267c9a 2019-03-15 stsp return err;
111 f9267c9a 2019-03-15 stsp static const struct got_error *
112 f9267c9a 2019-03-15 stsp alloc_symref(struct got_reference **ref, const char *name,
113 f9267c9a 2019-03-15 stsp const char *target_ref, int flags)
115 f9267c9a 2019-03-15 stsp const struct got_error *err = NULL;
117 5261c201 2018-04-01 stsp *ref = calloc(1, sizeof(**ref));
118 5261c201 2018-04-01 stsp if (*ref == NULL)
119 638f9024 2019-05-13 stsp return got_error_from_errno("calloc");
121 f9267c9a 2019-03-15 stsp (*ref)->flags = GOT_REF_IS_SYMBOLIC | flags;
122 f9267c9a 2019-03-15 stsp (*ref)->ref.symref.name = strdup(name);
123 f9267c9a 2019-03-15 stsp if ((*ref)->ref.symref.name == NULL) {
124 638f9024 2019-05-13 stsp err = got_error_from_errno("strdup");
125 f9267c9a 2019-03-15 stsp got_ref_close(*ref);
126 f9267c9a 2019-03-15 stsp *ref = NULL;
127 cdb8f1fa 2019-08-28 hiltjo return err;
129 f9267c9a 2019-03-15 stsp (*ref)->ref.symref.ref = strdup(target_ref);
130 f9267c9a 2019-03-15 stsp if ((*ref)->ref.symref.ref == 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;
135 f9267c9a 2019-03-15 stsp return err;
138 5261c201 2018-04-01 stsp static const struct got_error *
139 f9267c9a 2019-03-15 stsp parse_symref(struct got_reference **ref, const char *name, const char *line)
141 f9267c9a 2019-03-15 stsp if (line[0] == '\0')
142 f9267c9a 2019-03-15 stsp return got_error(GOT_ERR_BAD_REF_DATA);
144 f9267c9a 2019-03-15 stsp return alloc_symref(ref, name, line, 0);
147 f9267c9a 2019-03-15 stsp static const struct got_error *
148 5261c201 2018-04-01 stsp parse_ref_line(struct got_reference **ref, const char *name, const char *line)
150 5892cdd6 2019-03-10 stsp struct got_object_id id;
152 5261c201 2018-04-01 stsp if (strncmp(line, "ref: ", 5) == 0) {
154 5261c201 2018-04-01 stsp return parse_symref(ref, name, line);
157 5892cdd6 2019-03-10 stsp if (!got_parse_sha1_digest(id.sha1, line))
158 30c0868d 2019-02-03 stsp return got_error(GOT_ERR_BAD_REF_DATA);
160 f9267c9a 2019-03-15 stsp return alloc_ref(ref, name, &id, 0);
163 5261c201 2018-04-01 stsp static const struct got_error *
164 5261c201 2018-04-01 stsp parse_ref_file(struct got_reference **ref, const char *name,
165 2f17228e 2019-05-12 stsp const char *abspath, int lock)
167 5261c201 2018-04-01 stsp const struct got_error *err = NULL;
169 c30018ad 2019-10-21 stsp char *line = NULL;
170 c30018ad 2019-10-21 stsp size_t linesize = 0;
171 c30018ad 2019-10-21 stsp ssize_t linelen;
172 2f17228e 2019-05-12 stsp struct got_lockfile *lf = NULL;
174 2f17228e 2019-05-12 stsp if (lock) {
175 2f17228e 2019-05-12 stsp err = got_lockfile_lock(&lf, abspath);
177 2f17228e 2019-05-12 stsp return (err);
180 c0a1c016 2019-03-15 stsp f = fopen(abspath, "rb");
181 f5c58ad1 2019-05-12 stsp if (f == NULL) {
183 f5c58ad1 2019-05-12 stsp got_lockfile_unlock(lf);
184 1e37702e 2019-02-04 stsp return NULL;
187 c30018ad 2019-10-21 stsp linelen = getline(&line, &linesize, f);
188 c30018ad 2019-10-21 stsp if (linelen == -1) {
189 c30018ad 2019-10-21 stsp if (feof(f))
190 c30018ad 2019-10-21 stsp err = NULL; /* ignore empty files (could be locks) */
192 c30018ad 2019-10-21 stsp err = got_error_from_errno2("getline", abspath);
194 f5c58ad1 2019-05-12 stsp got_lockfile_unlock(lf);
197 c30018ad 2019-10-21 stsp while (linelen > 0 && line[linelen - 1] == '\n') {
198 c30018ad 2019-10-21 stsp line[linelen - 1] = '\0';
202 5261c201 2018-04-01 stsp err = parse_ref_line(ref, name, line);
203 f5c58ad1 2019-05-12 stsp if (lock) {
205 f5c58ad1 2019-05-12 stsp got_lockfile_unlock(lf);
208 f5c58ad1 2019-05-12 stsp (*ref)->lf = lf;
210 f5c58ad1 2019-05-12 stsp got_lockfile_unlock(lf);
214 5261c201 2018-04-01 stsp free(line);
215 2f17228e 2019-05-12 stsp if (fclose(f) != 0 && err == NULL) {
216 638f9024 2019-05-13 stsp err = got_error_from_errno("fclose");
217 2f17228e 2019-05-12 stsp if (*ref) {
219 f5c58ad1 2019-05-12 stsp got_ref_unlock(*ref);
220 2f17228e 2019-05-12 stsp got_ref_close(*ref);
221 2f17228e 2019-05-12 stsp *ref = NULL;
224 5261c201 2018-04-01 stsp return err;
228 c5f754cc 2019-02-01 stsp is_well_known_ref(const char *refname)
230 c5f754cc 2019-02-01 stsp return (strcmp(refname, GOT_REF_HEAD) == 0 ||
231 5261c201 2018-04-01 stsp strcmp(refname, GOT_REF_ORIG_HEAD) == 0 ||
232 5261c201 2018-04-01 stsp strcmp(refname, GOT_REF_MERGE_HEAD) == 0 ||
233 c5f754cc 2019-02-01 stsp strcmp(refname, GOT_REF_FETCH_HEAD) == 0);
236 c5f754cc 2019-02-01 stsp static char *
237 c5f754cc 2019-02-01 stsp get_refs_dir_path(struct got_repository *repo, const char *refname)
239 c5f754cc 2019-02-01 stsp if (is_well_known_ref(refname) || strncmp(refname, "refs/", 5) == 0)
240 6e9da951 2019-01-06 stsp return strdup(got_repo_get_path_git_dir(repo));
242 5261c201 2018-04-01 stsp return got_repo_get_path_refs(repo);
246 f77a24b0 2019-03-11 stsp is_valid_ref_name(const char *name)
248 f77a24b0 2019-03-11 stsp const char *s, *slash, *seg;
249 f77a24b0 2019-03-11 stsp const char forbidden[] = { ' ', '~', '^', ':', '?', '*', '[' , '\\' };
250 f77a24b0 2019-03-11 stsp const char *forbidden_seq[] = { "//", "..", "@{" };
251 f77a24b0 2019-03-11 stsp const char *lfs = GOT_LOCKFILE_SUFFIX;
252 f77a24b0 2019-03-11 stsp const size_t lfs_len = sizeof(GOT_LOCKFILE_SUFFIX) - 1;
255 f77a24b0 2019-03-11 stsp if (name[0] == '@' && name[1] == '\0')
258 f77a24b0 2019-03-11 stsp slash = strchr(name, '/');
259 f77a24b0 2019-03-11 stsp if (slash == NULL)
264 f77a24b0 2019-03-11 stsp if (seg[0] == '\0' || seg[0] == '.' || seg[0] == '/')
266 f77a24b0 2019-03-11 stsp while (*s) {
267 f77a24b0 2019-03-11 stsp for (i = 0; i < nitems(forbidden); i++) {
268 f77a24b0 2019-03-11 stsp if (*s == forbidden[i])
271 f77a24b0 2019-03-11 stsp for (i = 0; i < nitems(forbidden_seq); i++) {
272 f77a24b0 2019-03-11 stsp if (s[0] == forbidden_seq[i][0] &&
273 f77a24b0 2019-03-11 stsp s[1] == forbidden_seq[i][1])
276 f77a24b0 2019-03-11 stsp if (iscntrl((unsigned char)s[0]))
278 f77a24b0 2019-03-11 stsp if (s[0] == '.' && s[1] == '\0')
280 f77a24b0 2019-03-11 stsp if (*s == '/') {
281 f77a24b0 2019-03-11 stsp const char *nextseg = s + 1;
282 f77a24b0 2019-03-11 stsp if (nextseg[0] == '\0' || nextseg[0] == '.' ||
283 f77a24b0 2019-03-11 stsp nextseg[0] == '/')
285 f77a24b0 2019-03-11 stsp if (seg <= s - lfs_len &&
286 f77a24b0 2019-03-11 stsp strncmp(s - lfs_len, lfs, lfs_len) == 0)
288 f77a24b0 2019-03-11 stsp seg = nextseg;
293 f77a24b0 2019-03-11 stsp if (seg <= s - lfs_len &&
294 f77a24b0 2019-03-11 stsp strncmp(s - lfs_len, lfs, lfs_len) == 0)
300 5892cdd6 2019-03-10 stsp const struct got_error *
301 5892cdd6 2019-03-10 stsp got_ref_alloc(struct got_reference **ref, const char *name,
302 5892cdd6 2019-03-10 stsp struct got_object_id *id)
304 0f148cb7 2019-05-13 stsp if (!is_valid_ref_name(name))
305 24b5452a 2019-10-09 stsp return got_error_path(name, GOT_ERR_BAD_REF_NAME);
307 0f148cb7 2019-05-13 stsp return alloc_ref(ref, name, id, 0);
310 aaf88317 2019-07-10 stsp const struct got_error *
311 aaf88317 2019-07-10 stsp got_ref_alloc_symref(struct got_reference **ref, const char *name,
312 aaf88317 2019-07-10 stsp struct got_reference *target_ref)
314 aaf88317 2019-07-10 stsp if (!is_valid_ref_name(name))
315 24b5452a 2019-10-09 stsp return got_error_path(name, GOT_ERR_BAD_REF_NAME);
317 aaf88317 2019-07-10 stsp return alloc_symref(ref, name, got_ref_get_name(target_ref), 0);
320 d1f2edc9 2018-06-13 stsp static const struct got_error *
321 fb79db15 2019-02-01 stsp parse_packed_ref_line(struct got_reference **ref, const char *abs_refname,
322 fb79db15 2019-02-01 stsp const char *line)
324 5892cdd6 2019-03-10 stsp struct got_object_id id;
325 5892cdd6 2019-03-10 stsp const char *name;
327 fb79db15 2019-02-01 stsp *ref = NULL;
329 532920c8 2019-02-01 stsp if (line[0] == '#' || line[0] == '^')
330 fb79db15 2019-02-01 stsp return NULL;
332 5892cdd6 2019-03-10 stsp if (!got_parse_sha1_digest(id.sha1, line))
333 30c0868d 2019-02-03 stsp return got_error(GOT_ERR_BAD_REF_DATA);
335 199a4027 2019-02-02 stsp if (abs_refname) {
336 199a4027 2019-02-02 stsp if (strcmp(line + SHA1_DIGEST_STRING_LENGTH, abs_refname) != 0)
337 199a4027 2019-02-02 stsp return NULL;
338 5892cdd6 2019-03-10 stsp name = abs_refname;
340 5892cdd6 2019-03-10 stsp name = line + SHA1_DIGEST_STRING_LENGTH;
342 f9267c9a 2019-03-15 stsp return alloc_ref(ref, name, &id, GOT_REF_IS_PACKED);
345 fb79db15 2019-02-01 stsp static const struct got_error *
346 0dec1cc0 2019-02-01 stsp open_packed_ref(struct got_reference **ref, FILE *f, const char **subdirs,
347 0dec1cc0 2019-02-01 stsp int nsubdirs, const char *refname)
349 fb79db15 2019-02-01 stsp const struct got_error *err = NULL;
350 fb79db15 2019-02-01 stsp char *abs_refname;
351 fb79db15 2019-02-01 stsp char *line;
352 fb79db15 2019-02-01 stsp size_t len;
353 fb79db15 2019-02-01 stsp const char delim[3] = {'\0', '\0', '\0'};
354 0dec1cc0 2019-02-01 stsp int i, ref_is_absolute = (strncmp(refname, "refs/", 5) == 0);
356 1e37702e 2019-02-04 stsp *ref = NULL;
358 0dec1cc0 2019-02-01 stsp if (ref_is_absolute)
359 0dec1cc0 2019-02-01 stsp abs_refname = (char *)refname;
361 fb79db15 2019-02-01 stsp line = fparseln(f, &len, NULL, delim, 0);
362 7ab0422a 2019-03-15 stsp if (line == NULL) {
363 7ab0422a 2019-03-15 stsp if (feof(f))
365 7ab0422a 2019-03-15 stsp err = got_ferror(f, GOT_ERR_BAD_REF_DATA);
368 0dec1cc0 2019-02-01 stsp for (i = 0; i < nsubdirs; i++) {
369 0dec1cc0 2019-02-01 stsp if (!ref_is_absolute &&
370 0dec1cc0 2019-02-01 stsp asprintf(&abs_refname, "refs/%s/%s", subdirs[i],
371 0dec1cc0 2019-02-01 stsp refname) == -1)
372 638f9024 2019-05-13 stsp return got_error_from_errno("asprintf");
373 0dec1cc0 2019-02-01 stsp err = parse_packed_ref_line(ref, abs_refname, line);
374 0dec1cc0 2019-02-01 stsp if (!ref_is_absolute)
375 0dec1cc0 2019-02-01 stsp free(abs_refname);
376 532920c8 2019-02-01 stsp if (err || *ref != NULL)
379 fb79db15 2019-02-01 stsp free(line);
382 fb79db15 2019-02-01 stsp } while (*ref == NULL);
384 fb79db15 2019-02-01 stsp return err;
387 fb79db15 2019-02-01 stsp static const struct got_error *
388 d1f2edc9 2018-06-13 stsp open_ref(struct got_reference **ref, const char *path_refs, const char *subdir,
389 2f17228e 2019-05-12 stsp const char *name, int lock)
391 d1f2edc9 2018-06-13 stsp const struct got_error *err = NULL;
392 a04f49d2 2019-02-04 stsp char *path = NULL;
393 a04f49d2 2019-02-04 stsp char *absname = NULL;
394 a04f49d2 2019-02-04 stsp int ref_is_absolute = (strncmp(name, "refs/", 5) == 0);
395 a04f49d2 2019-02-04 stsp int ref_is_well_known = is_well_known_ref(name);
397 1e37702e 2019-02-04 stsp *ref = NULL;
399 a04f49d2 2019-02-04 stsp if (ref_is_absolute || ref_is_well_known) {
400 a04f49d2 2019-02-04 stsp if (asprintf(&path, "%s/%s", path_refs, name) == -1)
401 638f9024 2019-05-13 stsp return got_error_from_errno("asprintf");
402 a04f49d2 2019-02-04 stsp absname = (char *)name;
404 58908ed0 2019-03-11 stsp if (asprintf(&path, "%s/%s%s%s", path_refs, subdir,
405 58908ed0 2019-03-11 stsp subdir[0] ? "/" : "", name) == -1)
406 638f9024 2019-05-13 stsp return got_error_from_errno("asprintf");
408 58908ed0 2019-03-11 stsp if (asprintf(&absname, "refs/%s%s%s",
409 58908ed0 2019-03-11 stsp subdir, subdir[0] ? "/" : "", name) == -1) {
410 638f9024 2019-05-13 stsp err = got_error_from_errno("asprintf");
415 6e472252 2019-07-22 stsp err = parse_ref_file(ref, absname, path, lock);
417 a04f49d2 2019-02-04 stsp if (!ref_is_absolute && !ref_is_well_known)
418 a04f49d2 2019-02-04 stsp free(absname);
419 a04f49d2 2019-02-04 stsp free(path);
420 d1f2edc9 2018-06-13 stsp return err;
423 5261c201 2018-04-01 stsp const struct got_error *
424 5261c201 2018-04-01 stsp got_ref_open(struct got_reference **ref, struct got_repository *repo,
425 2f17228e 2019-05-12 stsp const char *refname, int lock)
427 5261c201 2018-04-01 stsp const struct got_error *err = NULL;
428 c5f754cc 2019-02-01 stsp char *path_refs = NULL;
429 fb79db15 2019-02-01 stsp const char *subdirs[] = {
430 fb79db15 2019-02-01 stsp GOT_REF_HEADS, GOT_REF_TAGS, GOT_REF_REMOTES
432 c5f754cc 2019-02-01 stsp int i, well_known = is_well_known_ref(refname);
433 a875589a 2019-05-12 stsp struct got_lockfile *lf = NULL;
435 1e37702e 2019-02-04 stsp *ref = NULL;
437 e135804e 2019-02-10 stsp path_refs = get_refs_dir_path(repo, refname);
438 e135804e 2019-02-10 stsp if (path_refs == NULL) {
439 638f9024 2019-05-13 stsp err = got_error_from_errno2("get_refs_dir_path", refname);
443 0885ce8f 2019-05-12 stsp if (well_known) {
444 0885ce8f 2019-05-12 stsp err = open_ref(ref, path_refs, "", refname, lock);
446 c5f754cc 2019-02-01 stsp char *packed_refs_path;
449 e135804e 2019-02-10 stsp /* Search on-disk refs before packed refs! */
450 e135804e 2019-02-10 stsp for (i = 0; i < nitems(subdirs); i++) {
451 2f17228e 2019-05-12 stsp err = open_ref(ref, path_refs, subdirs[i], refname,
453 e135804e 2019-02-10 stsp if (err || *ref)
457 c5f754cc 2019-02-01 stsp packed_refs_path = got_repo_get_path_packed_refs(repo);
458 e135804e 2019-02-10 stsp if (packed_refs_path == NULL) {
459 638f9024 2019-05-13 stsp err = got_error_from_errno(
460 230a42bd 2019-05-11 jcs "got_repo_get_path_packed_refs");
464 2f17228e 2019-05-12 stsp if (lock) {
465 a875589a 2019-05-12 stsp err = got_lockfile_lock(&lf, packed_refs_path);
469 c5f754cc 2019-02-01 stsp f = fopen(packed_refs_path, "rb");
470 c5f754cc 2019-02-01 stsp free(packed_refs_path);
471 c5f754cc 2019-02-01 stsp if (f != NULL) {
472 0dec1cc0 2019-02-01 stsp err = open_packed_ref(ref, f, subdirs, nitems(subdirs),
474 a875589a 2019-05-12 stsp if (!err) {
475 a875589a 2019-05-12 stsp if (fclose(f) != 0) {
476 638f9024 2019-05-13 stsp err = got_error_from_errno("fclose");
477 a875589a 2019-05-12 stsp got_ref_close(*ref);
478 a875589a 2019-05-12 stsp *ref = NULL;
479 6e472abb 2019-05-13 stsp } else if (*ref)
480 a875589a 2019-05-12 stsp (*ref)->lf = lf;
485 5b575c25 2019-05-12 stsp if (!err && *ref == NULL)
486 1e37702e 2019-02-04 stsp err = got_error_not_ref(refname);
487 a875589a 2019-05-12 stsp if (err && lf)
488 a875589a 2019-05-12 stsp got_lockfile_unlock(lf);
489 5261c201 2018-04-01 stsp free(path_refs);
490 5261c201 2018-04-01 stsp return err;
494 5261c201 2018-04-01 stsp got_ref_close(struct got_reference *ref)
496 e09d28b1 2019-03-15 stsp if (ref->flags & GOT_REF_IS_SYMBOLIC) {
497 5261c201 2018-04-01 stsp free(ref->ref.symref.name);
498 e09d28b1 2019-03-15 stsp free(ref->ref.symref.ref);
500 5261c201 2018-04-01 stsp free(ref->ref.ref.name);
504 5261c201 2018-04-01 stsp struct got_reference *
505 5261c201 2018-04-01 stsp got_ref_dup(struct got_reference *ref)
507 5261c201 2018-04-01 stsp struct got_reference *ret;
509 5261c201 2018-04-01 stsp ret = calloc(1, sizeof(*ret));
510 5261c201 2018-04-01 stsp if (ret == NULL)
511 5261c201 2018-04-01 stsp return NULL;
513 5261c201 2018-04-01 stsp ret->flags = ref->flags;
514 5261c201 2018-04-01 stsp if (ref->flags & GOT_REF_IS_SYMBOLIC) {
515 5261c201 2018-04-01 stsp ret->ref.symref.name = strdup(ref->ref.symref.name);
516 5261c201 2018-04-01 stsp if (ret->ref.symref.name == NULL) {
518 5261c201 2018-04-01 stsp return NULL;
520 5261c201 2018-04-01 stsp ret->ref.symref.ref = strdup(ref->ref.symref.ref);
521 5261c201 2018-04-01 stsp if (ret->ref.symref.ref == NULL) {
522 5261c201 2018-04-01 stsp free(ret->ref.symref.name);
524 5261c201 2018-04-01 stsp return NULL;
527 5261c201 2018-04-01 stsp ref->ref.ref.name = strdup(ref->ref.ref.name);
528 5261c201 2018-04-01 stsp if (ref->ref.ref.name == NULL) {
530 5261c201 2018-04-01 stsp return NULL;
532 5261c201 2018-04-01 stsp memcpy(ret->ref.ref.sha1, ref->ref.ref.sha1,
533 80d5fc1f 2019-03-15 stsp sizeof(ret->ref.ref.sha1));
536 5261c201 2018-04-01 stsp return ret;
539 b8bad2ba 2019-08-23 stsp const struct got_error *
540 b8bad2ba 2019-08-23 stsp got_reflist_entry_dup(struct got_reflist_entry **newp,
541 b8bad2ba 2019-08-23 stsp struct got_reflist_entry *re)
543 b8bad2ba 2019-08-23 stsp const struct got_error *err = NULL;
544 b8bad2ba 2019-08-23 stsp struct got_reflist_entry *new;
546 b8bad2ba 2019-08-23 stsp *newp = NULL;
548 b8bad2ba 2019-08-23 stsp new = malloc(sizeof(*new));
549 b8bad2ba 2019-08-23 stsp if (new == NULL)
550 b8bad2ba 2019-08-23 stsp return got_error_from_errno("malloc");
552 b8bad2ba 2019-08-23 stsp new->ref = got_ref_dup(re->ref);
553 b8bad2ba 2019-08-23 stsp if (new->ref == NULL) {
554 b8bad2ba 2019-08-23 stsp err = got_error_from_errno("got_ref_dup");
556 b8bad2ba 2019-08-23 stsp return err;
559 b8bad2ba 2019-08-23 stsp new->id = got_object_id_dup(re->id);
560 b8bad2ba 2019-08-23 stsp if (new->id == NULL) {
561 b8bad2ba 2019-08-23 stsp err = got_error_from_errno("got_ref_dup");
562 b8bad2ba 2019-08-23 stsp free(new->id);
564 b8bad2ba 2019-08-23 stsp return err;
567 b8bad2ba 2019-08-23 stsp *newp = new;
568 b8bad2ba 2019-08-23 stsp return NULL;
571 5261c201 2018-04-01 stsp static const struct got_error *
572 5261c201 2018-04-01 stsp resolve_symbolic_ref(struct got_reference **resolved,
573 5261c201 2018-04-01 stsp struct got_repository *repo, struct got_reference *ref)
575 5261c201 2018-04-01 stsp struct got_reference *nextref;
576 5261c201 2018-04-01 stsp const struct got_error *err;
578 2f17228e 2019-05-12 stsp err = got_ref_open(&nextref, repo, ref->ref.symref.ref, 0);
580 5261c201 2018-04-01 stsp return err;
582 5261c201 2018-04-01 stsp if (nextref->flags & GOT_REF_IS_SYMBOLIC)
583 5261c201 2018-04-01 stsp err = resolve_symbolic_ref(resolved, repo, nextref);
585 5261c201 2018-04-01 stsp *resolved = got_ref_dup(nextref);
587 5261c201 2018-04-01 stsp got_ref_close(nextref);
588 5261c201 2018-04-01 stsp return err;
591 29e86f7a 2019-08-12 stsp static const struct got_error *
592 29e86f7a 2019-08-12 stsp ref_resolve(struct got_object_id **id, struct got_repository *repo,
593 29e86f7a 2019-08-12 stsp struct got_reference *ref, int recursion)
595 5261c201 2018-04-01 stsp const struct got_error *err;
597 29e86f7a 2019-08-12 stsp if (recursion <= 0)
598 29e86f7a 2019-08-12 stsp return got_error_msg(GOT_ERR_RECURSION,
599 29e86f7a 2019-08-12 stsp "reference recursion limit reached");
601 5261c201 2018-04-01 stsp if (ref->flags & GOT_REF_IS_SYMBOLIC) {
602 5261c201 2018-04-01 stsp struct got_reference *resolved = NULL;
603 5261c201 2018-04-01 stsp err = resolve_symbolic_ref(&resolved, repo, ref);
604 5261c201 2018-04-01 stsp if (err == NULL)
605 29e86f7a 2019-08-12 stsp err = ref_resolve(id, repo, resolved, --recursion);
606 57b6f99a 2019-04-13 stsp if (resolved)
607 57b6f99a 2019-04-13 stsp got_ref_close(resolved);
608 5261c201 2018-04-01 stsp return err;
611 5261c201 2018-04-01 stsp *id = calloc(1, sizeof(**id));
612 5261c201 2018-04-01 stsp if (*id == NULL)
613 638f9024 2019-05-13 stsp return got_error_from_errno("calloc");
614 80d5fc1f 2019-03-15 stsp memcpy((*id)->sha1, ref->ref.ref.sha1, sizeof((*id)->sha1));
615 5261c201 2018-04-01 stsp return NULL;
618 29e86f7a 2019-08-12 stsp const struct got_error *
619 29e86f7a 2019-08-12 stsp got_ref_resolve(struct got_object_id **id, struct got_repository *repo,
620 29e86f7a 2019-08-12 stsp struct got_reference *ref)
622 29e86f7a 2019-08-12 stsp return ref_resolve(id, repo, ref, GOT_REF_RECURSE_MAX);
626 5261c201 2018-04-01 stsp got_ref_to_str(struct got_reference *ref)
630 271d2a38 2018-12-25 stsp if (ref->flags & GOT_REF_IS_SYMBOLIC)
631 271d2a38 2018-12-25 stsp return strdup(ref->ref.symref.ref);
633 271d2a38 2018-12-25 stsp str = malloc(SHA1_DIGEST_STRING_LENGTH);
634 271d2a38 2018-12-25 stsp if (str == NULL)
635 271d2a38 2018-12-25 stsp return NULL;
637 271d2a38 2018-12-25 stsp if (got_sha1_digest_to_str(ref->ref.ref.sha1, str,
638 271d2a38 2018-12-25 stsp SHA1_DIGEST_STRING_LENGTH) == NULL) {
640 271d2a38 2018-12-25 stsp return NULL;
643 5261c201 2018-04-01 stsp return str;
646 0bd18d37 2019-02-01 stsp const char *
647 0bd18d37 2019-02-01 stsp got_ref_get_name(struct got_reference *ref)
649 0bd18d37 2019-02-01 stsp if (ref->flags & GOT_REF_IS_SYMBOLIC)
650 0bd18d37 2019-02-01 stsp return ref->ref.symref.name;
652 0bd18d37 2019-02-01 stsp return ref->ref.ref.name;
655 aaf88317 2019-07-10 stsp const char *
656 aaf88317 2019-07-10 stsp got_ref_get_symref_target(struct got_reference *ref)
658 aaf88317 2019-07-10 stsp if (ref->flags & GOT_REF_IS_SYMBOLIC)
659 aaf88317 2019-07-10 stsp return ref->ref.symref.ref;
661 b8bad2ba 2019-08-23 stsp return NULL;
664 b8bad2ba 2019-08-23 stsp const struct got_error *
665 b8bad2ba 2019-08-23 stsp got_ref_cmp_by_name(void *arg, int *cmp, struct got_reference *re1,
666 b8bad2ba 2019-08-23 stsp struct got_reference* re2)
668 b8bad2ba 2019-08-23 stsp const char *name1 = got_ref_get_name(re1);
669 b8bad2ba 2019-08-23 stsp const char *name2 = got_ref_get_name(re2);
671 b8bad2ba 2019-08-23 stsp *cmp = got_path_cmp(name1, name2, strlen(name1), strlen(name2));
672 aaf88317 2019-07-10 stsp return NULL;
675 d1f16636 2020-01-15 stsp const struct got_error *
676 d1f16636 2020-01-15 stsp got_ref_cmp_tags(void *arg, int *cmp, struct got_reference *ref1,
677 d1f16636 2020-01-15 stsp struct got_reference *ref2)
679 d1f16636 2020-01-15 stsp const struct got_error *err = NULL;
680 d1f16636 2020-01-15 stsp struct got_repository *repo = arg;
681 d1f16636 2020-01-15 stsp struct got_object_id *id1, *id2 = NULL;
682 d1f16636 2020-01-15 stsp struct got_tag_object *tag1 = NULL, *tag2 = NULL;
683 d1f16636 2020-01-15 stsp struct got_commit_object *commit1 = NULL, *commit2 = NULL;
684 d1f16636 2020-01-15 stsp time_t time1, time2;
688 d1f16636 2020-01-15 stsp err = got_ref_resolve(&id1, repo, ref1);
690 d1f16636 2020-01-15 stsp return err;
691 d1f16636 2020-01-15 stsp err = got_object_open_as_tag(&tag1, repo, id1);
693 d1f16636 2020-01-15 stsp if (err->code != GOT_ERR_OBJ_TYPE)
695 d1f16636 2020-01-15 stsp /* "lightweight" tag */
696 d1f16636 2020-01-15 stsp err = got_object_open_as_commit(&commit1, repo, id1);
699 d1f16636 2020-01-15 stsp time1 = got_object_commit_get_committer_time(commit1);
701 d1f16636 2020-01-15 stsp time1 = got_object_tag_get_tagger_time(tag1);
703 d1f16636 2020-01-15 stsp err = got_ref_resolve(&id2, repo, ref2);
706 d1f16636 2020-01-15 stsp err = got_object_open_as_tag(&tag2, repo, id2);
708 d1f16636 2020-01-15 stsp if (err->code != GOT_ERR_OBJ_TYPE)
710 d1f16636 2020-01-15 stsp /* "lightweight" tag */
711 d1f16636 2020-01-15 stsp err = got_object_open_as_commit(&commit2, repo, id2);
714 d1f16636 2020-01-15 stsp time2 = got_object_commit_get_committer_time(commit2);
716 d1f16636 2020-01-15 stsp time2 = got_object_tag_get_tagger_time(tag2);
718 d1f16636 2020-01-15 stsp /* Put latest tags first. */
719 d1f16636 2020-01-15 stsp if (time1 < time2)
721 d1f16636 2020-01-15 stsp else if (time1 > time2)
724 d1f16636 2020-01-15 stsp err = got_ref_cmp_by_name(NULL, cmp, ref2, ref1);
729 d1f16636 2020-01-15 stsp got_object_tag_close(tag1);
731 d1f16636 2020-01-15 stsp got_object_tag_close(tag2);
732 d1f16636 2020-01-15 stsp if (commit1)
733 d1f16636 2020-01-15 stsp got_object_commit_close(commit1);
734 d1f16636 2020-01-15 stsp if (commit2)
735 d1f16636 2020-01-15 stsp got_object_commit_close(commit2);
736 d1f16636 2020-01-15 stsp return err;
739 199a4027 2019-02-02 stsp static const struct got_error *
740 505287be 2019-03-15 stsp insert_ref(struct got_reflist_entry **newp, struct got_reflist_head *refs,
741 b8bad2ba 2019-08-23 stsp struct got_reference *ref, struct got_repository *repo,
742 b8bad2ba 2019-08-23 stsp got_ref_cmp_cb cmp_cb, void *cmp_arg)
744 199a4027 2019-02-02 stsp const struct got_error *err;
745 199a4027 2019-02-02 stsp struct got_object_id *id;
746 6249107b 2019-03-15 stsp struct got_reflist_entry *new, *re, *prev = NULL;
749 505287be 2019-03-15 stsp *newp = NULL;
751 7a3c76f5 2019-02-05 stsp err = got_ref_resolve(&id, repo, ref);
753 7a3c76f5 2019-02-05 stsp return err;
755 6fdbf7b0 2019-03-15 stsp new = malloc(sizeof(*new));
756 7a3c76f5 2019-02-05 stsp if (new == NULL) {
758 638f9024 2019-05-13 stsp return got_error_from_errno("malloc");
760 7a3c76f5 2019-02-05 stsp new->ref = ref;
761 7a3c76f5 2019-02-05 stsp new->id = id;
762 505287be 2019-03-15 stsp *newp = new;
765 29b5c214 2019-02-04 stsp * We must de-duplicate entries on insert because packed-refs may
766 29b5c214 2019-02-04 stsp * contain redundant entries. On-disk refs take precedence.
767 29b5c214 2019-02-04 stsp * This code assumes that on-disk revs are read before packed-refs.
768 e397b6db 2019-02-04 stsp * We're iterating the list anyway, so insert elements sorted by name.
770 7a3c76f5 2019-02-05 stsp re = SIMPLEQ_FIRST(refs);
771 7a3c76f5 2019-02-05 stsp while (re) {
772 b8bad2ba 2019-08-23 stsp err = (*cmp_cb)(cmp_arg, &cmp, re->ref, new->ref);
774 b8bad2ba 2019-08-23 stsp return err;
775 e397b6db 2019-02-04 stsp if (cmp == 0) {
776 27a1ed03 2019-03-15 stsp /* duplicate */
777 27a1ed03 2019-03-15 stsp free(new->id);
779 505287be 2019-03-15 stsp *newp = NULL;
780 7a3c76f5 2019-02-05 stsp return NULL;
781 7a3c76f5 2019-02-05 stsp } else if (cmp > 0) {
783 7a3c76f5 2019-02-05 stsp SIMPLEQ_INSERT_AFTER(refs, prev, new, entry);
785 7a3c76f5 2019-02-05 stsp SIMPLEQ_INSERT_HEAD(refs, new, entry);
786 7a3c76f5 2019-02-05 stsp return NULL;
789 7a3c76f5 2019-02-05 stsp re = SIMPLEQ_NEXT(re, entry);
793 7a3c76f5 2019-02-05 stsp SIMPLEQ_INSERT_TAIL(refs, new, entry);
794 199a4027 2019-02-02 stsp return NULL;
797 a04f49d2 2019-02-04 stsp static const struct got_error *
798 29b5c214 2019-02-04 stsp gather_on_disk_refs(struct got_reflist_head *refs, const char *path_refs,
799 b8bad2ba 2019-08-23 stsp const char *subdir, struct got_repository *repo,
800 b8bad2ba 2019-08-23 stsp got_ref_cmp_cb cmp_cb, void *cmp_arg)
802 a04f49d2 2019-02-04 stsp const struct got_error *err = NULL;
803 a04f49d2 2019-02-04 stsp DIR *d = NULL;
804 a04f49d2 2019-02-04 stsp char *path_subdir;
806 a04f49d2 2019-02-04 stsp if (asprintf(&path_subdir, "%s/%s", path_refs, subdir) == -1)
807 638f9024 2019-05-13 stsp return got_error_from_errno("asprintf");
809 a04f49d2 2019-02-04 stsp d = opendir(path_subdir);
810 a04f49d2 2019-02-04 stsp if (d == NULL)
814 a04f49d2 2019-02-04 stsp struct dirent *dent;
815 a04f49d2 2019-02-04 stsp struct got_reference *ref;
816 a04f49d2 2019-02-04 stsp char *child;
818 a04f49d2 2019-02-04 stsp dent = readdir(d);
819 a04f49d2 2019-02-04 stsp if (dent == NULL)
822 a04f49d2 2019-02-04 stsp if (strcmp(dent->d_name, ".") == 0 ||
823 a04f49d2 2019-02-04 stsp strcmp(dent->d_name, "..") == 0)
826 a04f49d2 2019-02-04 stsp switch (dent->d_type) {
827 a04f49d2 2019-02-04 stsp case DT_REG:
828 2f17228e 2019-05-12 stsp err = open_ref(&ref, path_refs, subdir, dent->d_name,
833 505287be 2019-03-15 stsp struct got_reflist_entry *new;
834 b8bad2ba 2019-08-23 stsp err = insert_ref(&new, refs, ref, repo,
835 b8bad2ba 2019-08-23 stsp cmp_cb, cmp_arg);
836 505287be 2019-03-15 stsp if (err || new == NULL /* duplicate */)
837 505287be 2019-03-15 stsp got_ref_close(ref);
842 a04f49d2 2019-02-04 stsp case DT_DIR:
843 a04f49d2 2019-02-04 stsp if (asprintf(&child, "%s%s%s", subdir,
844 a04f49d2 2019-02-04 stsp subdir[0] == '\0' ? "" : "/", dent->d_name) == -1) {
845 638f9024 2019-05-13 stsp err = got_error_from_errno("asprintf");
848 b8bad2ba 2019-08-23 stsp err = gather_on_disk_refs(refs, path_refs, child, repo,
849 b8bad2ba 2019-08-23 stsp cmp_cb, cmp_arg);
850 a04f49d2 2019-02-04 stsp free(child);
858 a04f49d2 2019-02-04 stsp closedir(d);
859 a04f49d2 2019-02-04 stsp free(path_subdir);
860 a04f49d2 2019-02-04 stsp return err;
863 199a4027 2019-02-02 stsp const struct got_error *
864 29606af7 2019-08-23 stsp got_ref_list(struct got_reflist_head *refs, struct got_repository *repo,
865 b8bad2ba 2019-08-23 stsp const char *ref_namespace, got_ref_cmp_cb cmp_cb, void *cmp_arg)
867 199a4027 2019-02-02 stsp const struct got_error *err;
868 a04f49d2 2019-02-04 stsp char *packed_refs_path, *path_refs = NULL;
869 6aeab596 2019-08-28 stsp const char *ondisk_ref_namespace = NULL;
870 29b5c214 2019-02-04 stsp FILE *f = NULL;
871 199a4027 2019-02-02 stsp struct got_reference *ref;
872 505287be 2019-03-15 stsp struct got_reflist_entry *new;
874 29606af7 2019-08-23 stsp if (ref_namespace == NULL || ref_namespace[0] == '\0') {
875 29606af7 2019-08-23 stsp /* HEAD ref should always exist. */
876 29606af7 2019-08-23 stsp path_refs = get_refs_dir_path(repo, GOT_REF_HEAD);
877 29606af7 2019-08-23 stsp if (path_refs == NULL) {
878 29606af7 2019-08-23 stsp err = got_error_from_errno("get_refs_dir_path");
881 29606af7 2019-08-23 stsp err = open_ref(&ref, path_refs, "", GOT_REF_HEAD, 0);
884 b8bad2ba 2019-08-23 stsp err = insert_ref(&new, refs, ref, repo, cmp_cb, cmp_arg);
885 29606af7 2019-08-23 stsp if (err || new == NULL /* duplicate */)
886 29606af7 2019-08-23 stsp got_ref_close(ref);
891 6aeab596 2019-08-28 stsp ondisk_ref_namespace = ref_namespace;
892 29606af7 2019-08-23 stsp if (ref_namespace && strncmp(ref_namespace, "refs/", 5) == 0)
893 6aeab596 2019-08-28 stsp ondisk_ref_namespace += 5;
895 29b5c214 2019-02-04 stsp /* Gather on-disk refs before parsing packed-refs. */
896 29b5c214 2019-02-04 stsp free(path_refs);
897 29b5c214 2019-02-04 stsp path_refs = get_refs_dir_path(repo, "");
898 29b5c214 2019-02-04 stsp if (path_refs == NULL) {
899 638f9024 2019-05-13 stsp err = got_error_from_errno("get_refs_dir_path");
902 29606af7 2019-08-23 stsp err = gather_on_disk_refs(refs, path_refs,
903 6aeab596 2019-08-28 stsp ondisk_ref_namespace ? ondisk_ref_namespace : "", repo,
904 6aeab596 2019-08-28 stsp cmp_cb, cmp_arg);
909 29b5c214 2019-02-04 stsp * The packed-refs file may contain redundant entries, in which
910 29b5c214 2019-02-04 stsp * case on-disk refs take precedence.
912 199a4027 2019-02-02 stsp packed_refs_path = got_repo_get_path_packed_refs(repo);
913 29b5c214 2019-02-04 stsp if (packed_refs_path == NULL) {
914 638f9024 2019-05-13 stsp err = got_error_from_errno("got_repo_get_path_packed_refs");
918 199a4027 2019-02-02 stsp f = fopen(packed_refs_path, "r");
919 199a4027 2019-02-02 stsp free(packed_refs_path);
921 199a4027 2019-02-02 stsp char *line;
922 199a4027 2019-02-02 stsp size_t len;
923 199a4027 2019-02-02 stsp const char delim[3] = {'\0', '\0', '\0'};
925 199a4027 2019-02-02 stsp line = fparseln(f, &len, NULL, delim, 0);
926 0bb4abae 2019-03-15 stsp if (line == NULL) {
927 0bb4abae 2019-03-15 stsp if (feof(f))
929 0bb4abae 2019-03-15 stsp err = got_ferror(f, GOT_ERR_BAD_REF_DATA);
932 199a4027 2019-02-02 stsp err = parse_packed_ref_line(&ref, NULL, line);
933 0bb4abae 2019-03-15 stsp free(line);
937 29606af7 2019-08-23 stsp if (ref_namespace) {
938 29606af7 2019-08-23 stsp const char *name;
939 29606af7 2019-08-23 stsp name = got_ref_get_name(ref);
940 29606af7 2019-08-23 stsp if (strncmp(name, ref_namespace,
941 29606af7 2019-08-23 stsp strlen(ref_namespace)) != 0) {
942 29606af7 2019-08-23 stsp got_ref_close(ref);
946 b8bad2ba 2019-08-23 stsp err = insert_ref(&new, refs, ref, repo,
947 b8bad2ba 2019-08-23 stsp cmp_cb, cmp_arg);
948 505287be 2019-03-15 stsp if (err || new == NULL /* duplicate */)
949 505287be 2019-03-15 stsp got_ref_close(ref);
956 a04f49d2 2019-02-04 stsp free(path_refs);
957 fb43ecf1 2019-02-11 stsp if (f && fclose(f) != 0 && err == NULL)
958 638f9024 2019-05-13 stsp err = got_error_from_errno("fclose");
959 199a4027 2019-02-02 stsp return err;
963 e2e879a0 2019-03-11 stsp got_ref_list_free(struct got_reflist_head *refs)
965 e2e879a0 2019-03-11 stsp struct got_reflist_entry *re;
967 e2e879a0 2019-03-11 stsp while (!SIMPLEQ_EMPTY(refs)) {
968 e2e879a0 2019-03-11 stsp re = SIMPLEQ_FIRST(refs);
969 e2e879a0 2019-03-11 stsp SIMPLEQ_REMOVE_HEAD(refs, entry);
970 e2e879a0 2019-03-11 stsp got_ref_close(re->ref);
971 e2e879a0 2019-03-11 stsp free(re->id);
978 b249b824 2019-05-09 stsp got_ref_is_symbolic(struct got_reference *ref)
980 b249b824 2019-05-09 stsp return (ref->flags & GOT_REF_IS_SYMBOLIC);
983 b249b824 2019-05-09 stsp const struct got_error *
984 b249b824 2019-05-09 stsp got_ref_change_ref(struct got_reference *ref, struct got_object_id *id)
986 b249b824 2019-05-09 stsp if (ref->flags & GOT_REF_IS_SYMBOLIC)
987 b249b824 2019-05-09 stsp return got_error(GOT_ERR_BAD_REF_TYPE);
989 b249b824 2019-05-09 stsp memcpy(ref->ref.ref.sha1, id->sha1, sizeof(ref->ref.ref.sha1));
990 b249b824 2019-05-09 stsp return NULL;
993 9e672c74 2019-03-11 stsp const struct got_error *
994 b249b824 2019-05-09 stsp got_ref_change_symref(struct got_reference *ref, char *refname)
996 b249b824 2019-05-09 stsp char *new_name;
998 b249b824 2019-05-09 stsp if ((ref->flags & GOT_REF_IS_SYMBOLIC) == 0)
999 b249b824 2019-05-09 stsp return got_error(GOT_ERR_BAD_REF_TYPE);
1001 b249b824 2019-05-09 stsp new_name = strdup(refname);
1002 b249b824 2019-05-09 stsp if (new_name == NULL)
1003 638f9024 2019-05-13 stsp return got_error_from_errno("strdup");
1005 b249b824 2019-05-09 stsp free(ref->ref.symref.name);
1006 b249b824 2019-05-09 stsp ref->ref.symref.name = new_name;
1007 b249b824 2019-05-09 stsp return NULL;
1010 b249b824 2019-05-09 stsp const struct got_error *
1011 9e672c74 2019-03-11 stsp got_ref_write(struct got_reference *ref, struct got_repository *repo)
1013 9e672c74 2019-03-11 stsp const struct got_error *err = NULL, *unlock_err = NULL;
1014 9e672c74 2019-03-11 stsp const char *name = got_ref_get_name(ref);
1015 9e672c74 2019-03-11 stsp char *path_refs = NULL, *path = NULL, *tmppath = NULL;
1016 9e672c74 2019-03-11 stsp struct got_lockfile *lf = NULL;
1017 9e672c74 2019-03-11 stsp FILE *f = NULL;
1019 9e672c74 2019-03-11 stsp struct stat sb;
1021 9e672c74 2019-03-11 stsp path_refs = get_refs_dir_path(repo, name);
1022 9e672c74 2019-03-11 stsp if (path_refs == NULL) {
1023 638f9024 2019-05-13 stsp err = got_error_from_errno2("get_refs_dir_path", name);
1024 9e672c74 2019-03-11 stsp goto done;
1027 9e672c74 2019-03-11 stsp if (asprintf(&path, "%s/%s", path_refs, name) == -1) {
1028 638f9024 2019-05-13 stsp err = got_error_from_errno("asprintf");
1029 9e672c74 2019-03-11 stsp goto done;
1032 9e672c74 2019-03-11 stsp err = got_opentemp_named(&tmppath, &f, path);
1033 49c7094f 2019-03-11 stsp if (err) {
1034 d1667f0d 2019-03-11 stsp char *parent;
1035 49c7094f 2019-03-11 stsp if (!(err->code == GOT_ERR_ERRNO && errno == ENOENT))
1036 5e1c9f23 2019-03-11 stsp goto done;
1037 d1667f0d 2019-03-11 stsp err = got_path_dirname(&parent, path);
1039 0cd1c46a 2019-03-11 stsp goto done;
1040 0cd1c46a 2019-03-11 stsp err = got_path_mkdir(parent);
1041 5e1c9f23 2019-03-11 stsp free(parent);
1043 0cd1c46a 2019-03-11 stsp goto done;
1044 0cd1c46a 2019-03-11 stsp err = got_opentemp_named(&tmppath, &f, path);
1046 0cd1c46a 2019-03-11 stsp goto done;
1049 9e672c74 2019-03-11 stsp if (ref->flags & GOT_REF_IS_SYMBOLIC) {
1050 9e672c74 2019-03-11 stsp n = fprintf(f, "ref: %s\n", ref->ref.symref.ref);
1051 9e672c74 2019-03-11 stsp if (n != strlen(ref->ref.symref.ref) + 6) {
1052 9e672c74 2019-03-11 stsp err = got_ferror(f, GOT_ERR_IO);
1053 9e672c74 2019-03-11 stsp goto done;
1056 9e672c74 2019-03-11 stsp char hex[SHA1_DIGEST_STRING_LENGTH];
1057 9e672c74 2019-03-11 stsp if (got_sha1_digest_to_str(ref->ref.ref.sha1, hex,
1058 9e672c74 2019-03-11 stsp sizeof(hex)) == NULL) {
1059 9e672c74 2019-03-11 stsp err = got_error(GOT_ERR_BAD_REF_DATA);
1060 9e672c74 2019-03-11 stsp goto done;
1062 9e672c74 2019-03-11 stsp n = fprintf(f, "%s\n", hex);
1063 8fa2f096 2019-03-11 stsp if (n != sizeof(hex)) {
1064 9e672c74 2019-03-11 stsp err = got_ferror(f, GOT_ERR_IO);
1065 9e672c74 2019-03-11 stsp goto done;
1069 2f17228e 2019-05-12 stsp if (ref->lf == NULL) {
1070 2f17228e 2019-05-12 stsp err = got_lockfile_lock(&lf, path);
1072 2f17228e 2019-05-12 stsp goto done;
1075 9e672c74 2019-03-11 stsp /* XXX: check if old content matches our expectations? */
1077 0cd1c46a 2019-03-11 stsp if (stat(path, &sb) != 0) {
1078 0cd1c46a 2019-03-11 stsp if (errno != ENOENT) {
1079 638f9024 2019-05-13 stsp err = got_error_from_errno2("stat", path);
1080 0cd1c46a 2019-03-11 stsp goto done;
1082 0cd1c46a 2019-03-11 stsp sb.st_mode = GOT_DEFAULT_FILE_MODE;
1085 9e672c74 2019-03-11 stsp if (rename(tmppath, path) != 0) {
1086 638f9024 2019-05-13 stsp err = got_error_from_errno3("rename", tmppath, path);
1087 9e672c74 2019-03-11 stsp goto done;
1089 9e672c74 2019-03-11 stsp free(tmppath);
1090 9e672c74 2019-03-11 stsp tmppath = NULL;
1092 9e672c74 2019-03-11 stsp if (chmod(path, sb.st_mode) != 0) {
1093 638f9024 2019-05-13 stsp err = got_error_from_errno2("chmod", path);
1094 9e672c74 2019-03-11 stsp goto done;
1097 2f17228e 2019-05-12 stsp if (ref->lf == NULL && lf)
1098 9e672c74 2019-03-11 stsp unlock_err = got_lockfile_unlock(lf);
1100 9e672c74 2019-03-11 stsp if (fclose(f) != 0 && err == NULL)
1101 638f9024 2019-05-13 stsp err = got_error_from_errno("fclose");
1103 9e672c74 2019-03-11 stsp free(path_refs);
1104 9e672c74 2019-03-11 stsp free(path);
1105 9e672c74 2019-03-11 stsp if (tmppath) {
1106 9e672c74 2019-03-11 stsp if (unlink(tmppath) != 0 && err == NULL)
1107 638f9024 2019-05-13 stsp err = got_error_from_errno2("unlink", tmppath);
1108 9e672c74 2019-03-11 stsp free(tmppath);
1110 2d2e1378 2019-03-11 stsp return err ? err : unlock_err;
1113 598a8b91 2019-03-15 stsp static const struct got_error *
1114 598a8b91 2019-03-15 stsp delete_packed_ref(struct got_reference *delref, struct got_repository *repo)
1116 598a8b91 2019-03-15 stsp const struct got_error *err = NULL, *unlock_err = NULL;
1117 598a8b91 2019-03-15 stsp struct got_lockfile *lf = NULL;
1118 598a8b91 2019-03-15 stsp FILE *f = NULL, *tmpf = NULL;
1119 598a8b91 2019-03-15 stsp char *packed_refs_path, *tmppath = NULL;
1120 598a8b91 2019-03-15 stsp struct got_reflist_head refs;
1121 598a8b91 2019-03-15 stsp int found_delref = 0;
1123 598a8b91 2019-03-15 stsp /* The packed-refs file does not cotain symbolic references. */
1124 598a8b91 2019-03-15 stsp if (delref->flags & GOT_REF_IS_SYMBOLIC)
1125 598a8b91 2019-03-15 stsp return got_error(GOT_ERR_BAD_REF_DATA);
1127 598a8b91 2019-03-15 stsp SIMPLEQ_INIT(&refs);
1129 598a8b91 2019-03-15 stsp packed_refs_path = got_repo_get_path_packed_refs(repo);
1130 598a8b91 2019-03-15 stsp if (packed_refs_path == NULL)
1131 638f9024 2019-05-13 stsp return got_error_from_errno("got_repo_get_path_packed_refs");
1133 598a8b91 2019-03-15 stsp err = got_opentemp_named(&tmppath, &tmpf, packed_refs_path);
1135 598a8b91 2019-03-15 stsp goto done;
1137 2f17228e 2019-05-12 stsp if (delref->lf == NULL) {
1138 2f17228e 2019-05-12 stsp err = got_lockfile_lock(&lf, packed_refs_path);
1140 2f17228e 2019-05-12 stsp goto done;
1143 598a8b91 2019-03-15 stsp f = fopen(packed_refs_path, "r");
1144 598a8b91 2019-03-15 stsp if (f == NULL) {
1145 638f9024 2019-05-13 stsp err = got_error_from_errno2("fopen", packed_refs_path);
1146 598a8b91 2019-03-15 stsp goto done;
1149 598a8b91 2019-03-15 stsp char *line;
1150 598a8b91 2019-03-15 stsp size_t len;
1151 598a8b91 2019-03-15 stsp const char delim[3] = {'\0', '\0', '\0'};
1152 598a8b91 2019-03-15 stsp struct got_reference *ref;
1153 598a8b91 2019-03-15 stsp struct got_reflist_entry *new;
1155 598a8b91 2019-03-15 stsp line = fparseln(f, &len, NULL, delim, 0);
1156 598a8b91 2019-03-15 stsp if (line == NULL) {
1157 598a8b91 2019-03-15 stsp if (feof(f))
1159 598a8b91 2019-03-15 stsp err = got_ferror(f, GOT_ERR_BAD_REF_DATA);
1160 598a8b91 2019-03-15 stsp goto done;
1162 598a8b91 2019-03-15 stsp err = parse_packed_ref_line(&ref, NULL, line);
1163 598a8b91 2019-03-15 stsp free(line);
1165 598a8b91 2019-03-15 stsp goto done;
1166 598a8b91 2019-03-15 stsp if (ref == NULL)
1169 598a8b91 2019-03-15 stsp if (strcmp(ref->ref.ref.name, delref->ref.ref.name) == 0 &&
1170 598a8b91 2019-03-15 stsp memcmp(ref->ref.ref.sha1, delref->ref.ref.sha1,
1171 598a8b91 2019-03-15 stsp sizeof(delref->ref.ref.sha1)) == 0) {
1172 598a8b91 2019-03-15 stsp found_delref = 1;
1173 598a8b91 2019-03-15 stsp got_ref_close(ref);
1177 b8bad2ba 2019-08-23 stsp err = insert_ref(&new, &refs, ref, repo,
1178 b8bad2ba 2019-08-23 stsp got_ref_cmp_by_name, NULL);
1179 598a8b91 2019-03-15 stsp if (err || new == NULL /* duplicate */)
1180 598a8b91 2019-03-15 stsp got_ref_close(ref);
1182 598a8b91 2019-03-15 stsp goto done;
1185 598a8b91 2019-03-15 stsp if (found_delref) {
1186 598a8b91 2019-03-15 stsp struct got_reflist_entry *re;
1188 598a8b91 2019-03-15 stsp struct stat sb;
1190 598a8b91 2019-03-15 stsp n = fprintf(tmpf, "%s\n", GOT_PACKED_REFS_HEADER);
1191 598a8b91 2019-03-15 stsp if (n != sizeof(GOT_PACKED_REFS_HEADER)) {
1192 598a8b91 2019-03-15 stsp err = got_ferror(f, GOT_ERR_IO);
1193 598a8b91 2019-03-15 stsp goto done;
1196 598a8b91 2019-03-15 stsp SIMPLEQ_FOREACH(re, &refs, entry) {
1197 598a8b91 2019-03-15 stsp uint8_t hex[SHA1_DIGEST_STRING_LENGTH];
1199 598a8b91 2019-03-15 stsp if (got_sha1_digest_to_str(re->ref->ref.ref.sha1, hex,
1200 598a8b91 2019-03-15 stsp sizeof(hex)) == NULL) {
1201 598a8b91 2019-03-15 stsp err = got_error(GOT_ERR_BAD_REF_DATA);
1202 598a8b91 2019-03-15 stsp goto done;
1204 598a8b91 2019-03-15 stsp n = fprintf(tmpf, "%s ", hex);
1205 598a8b91 2019-03-15 stsp if (n != sizeof(hex)) {
1206 598a8b91 2019-03-15 stsp err = got_ferror(f, GOT_ERR_IO);
1207 598a8b91 2019-03-15 stsp goto done;
1209 598a8b91 2019-03-15 stsp n = fprintf(tmpf, "%s\n", re->ref->ref.ref.name);
1210 598a8b91 2019-03-15 stsp if (n != strlen(re->ref->ref.ref.name) + 1) {
1211 598a8b91 2019-03-15 stsp err = got_ferror(f, GOT_ERR_IO);
1212 598a8b91 2019-03-15 stsp goto done;
1216 598a8b91 2019-03-15 stsp if (fflush(tmpf) != 0) {
1217 638f9024 2019-05-13 stsp err = got_error_from_errno("fflush");
1218 598a8b91 2019-03-15 stsp goto done;
1221 598a8b91 2019-03-15 stsp if (stat(packed_refs_path, &sb) != 0) {
1222 598a8b91 2019-03-15 stsp if (errno != ENOENT) {
1223 638f9024 2019-05-13 stsp err = got_error_from_errno2("stat",
1224 230a42bd 2019-05-11 jcs packed_refs_path);
1225 598a8b91 2019-03-15 stsp goto done;
1227 598a8b91 2019-03-15 stsp sb.st_mode = GOT_DEFAULT_FILE_MODE;
1230 598a8b91 2019-03-15 stsp if (rename(tmppath, packed_refs_path) != 0) {
1231 638f9024 2019-05-13 stsp err = got_error_from_errno3("rename", tmppath,
1232 230a42bd 2019-05-11 jcs packed_refs_path);
1233 598a8b91 2019-03-15 stsp goto done;
1236 598a8b91 2019-03-15 stsp if (chmod(packed_refs_path, sb.st_mode) != 0) {
1237 638f9024 2019-05-13 stsp err = got_error_from_errno2("chmod",
1238 230a42bd 2019-05-11 jcs packed_refs_path);
1239 598a8b91 2019-03-15 stsp goto done;
1243 2f17228e 2019-05-12 stsp if (delref->lf == NULL && lf)
1244 598a8b91 2019-03-15 stsp unlock_err = got_lockfile_unlock(lf);
1246 598a8b91 2019-03-15 stsp if (fclose(f) != 0 && err == NULL)
1247 638f9024 2019-05-13 stsp err = got_error_from_errno("fclose");
1249 598a8b91 2019-03-15 stsp if (tmpf) {
1250 598a8b91 2019-03-15 stsp unlink(tmppath);
1251 598a8b91 2019-03-15 stsp if (fclose(tmpf) != 0 && err == NULL)
1252 638f9024 2019-05-13 stsp err = got_error_from_errno("fclose");
1254 598a8b91 2019-03-15 stsp free(tmppath);
1255 598a8b91 2019-03-15 stsp free(packed_refs_path);
1256 598a8b91 2019-03-15 stsp got_ref_list_free(&refs);
1257 598a8b91 2019-03-15 stsp return err ? err : unlock_err;
1260 2d2e1378 2019-03-11 stsp const struct got_error *
1261 2d2e1378 2019-03-11 stsp got_ref_delete(struct got_reference *ref, struct got_repository *repo)
1263 2d2e1378 2019-03-11 stsp const struct got_error *err = NULL, *unlock_err = NULL;
1264 2d2e1378 2019-03-11 stsp const char *name = got_ref_get_name(ref);
1265 2d2e1378 2019-03-11 stsp char *path_refs = NULL, *path = NULL;
1266 2d2e1378 2019-03-11 stsp struct got_lockfile *lf = NULL;
1268 598a8b91 2019-03-15 stsp if (ref->flags & GOT_REF_IS_PACKED)
1269 598a8b91 2019-03-15 stsp return delete_packed_ref(ref, repo);
1271 2d2e1378 2019-03-11 stsp path_refs = get_refs_dir_path(repo, name);
1272 2d2e1378 2019-03-11 stsp if (path_refs == NULL) {
1273 638f9024 2019-05-13 stsp err = got_error_from_errno2("get_refs_dir_path", name);
1274 2d2e1378 2019-03-11 stsp goto done;
1277 2d2e1378 2019-03-11 stsp if (asprintf(&path, "%s/%s", path_refs, name) == -1) {
1278 638f9024 2019-05-13 stsp err = got_error_from_errno("asprintf");
1279 2d2e1378 2019-03-11 stsp goto done;
1282 2f17228e 2019-05-12 stsp if (ref->lf == NULL) {
1283 2f17228e 2019-05-12 stsp err = got_lockfile_lock(&lf, path);
1285 2f17228e 2019-05-12 stsp goto done;
1288 2d2e1378 2019-03-11 stsp /* XXX: check if old content matches our expectations? */
1290 2d2e1378 2019-03-11 stsp if (unlink(path) != 0)
1291 638f9024 2019-05-13 stsp err = got_error_from_errno2("unlink", path);
1293 2f17228e 2019-05-12 stsp if (ref->lf == NULL && lf)
1294 2d2e1378 2019-03-11 stsp unlock_err = got_lockfile_unlock(lf);
1296 2d2e1378 2019-03-11 stsp free(path_refs);
1297 2d2e1378 2019-03-11 stsp free(path);
1298 9e672c74 2019-03-11 stsp return err ? err : unlock_err;
1301 2f17228e 2019-05-12 stsp const struct got_error *
1302 2f17228e 2019-05-12 stsp got_ref_unlock(struct got_reference *ref)
1304 2f17228e 2019-05-12 stsp const struct got_error *err;
1305 2f17228e 2019-05-12 stsp err = got_lockfile_unlock(ref->lf);
1306 2f17228e 2019-05-12 stsp ref->lf = NULL;
1307 2f17228e 2019-05-12 stsp return err;
