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 199a4027 2019-02-02 stsp static const struct got_error *
676 505287be 2019-03-15 stsp insert_ref(struct got_reflist_entry **newp, struct got_reflist_head *refs,
677 b8bad2ba 2019-08-23 stsp struct got_reference *ref, struct got_repository *repo,
678 b8bad2ba 2019-08-23 stsp got_ref_cmp_cb cmp_cb, void *cmp_arg)
680 199a4027 2019-02-02 stsp const struct got_error *err;
681 199a4027 2019-02-02 stsp struct got_object_id *id;
682 6249107b 2019-03-15 stsp struct got_reflist_entry *new, *re, *prev = NULL;
685 505287be 2019-03-15 stsp *newp = NULL;
687 7a3c76f5 2019-02-05 stsp err = got_ref_resolve(&id, repo, ref);
689 7a3c76f5 2019-02-05 stsp return err;
691 6fdbf7b0 2019-03-15 stsp new = malloc(sizeof(*new));
692 7a3c76f5 2019-02-05 stsp if (new == NULL) {
694 638f9024 2019-05-13 stsp return got_error_from_errno("malloc");
696 7a3c76f5 2019-02-05 stsp new->ref = ref;
697 7a3c76f5 2019-02-05 stsp new->id = id;
698 505287be 2019-03-15 stsp *newp = new;
701 29b5c214 2019-02-04 stsp * We must de-duplicate entries on insert because packed-refs may
702 29b5c214 2019-02-04 stsp * contain redundant entries. On-disk refs take precedence.
703 29b5c214 2019-02-04 stsp * This code assumes that on-disk revs are read before packed-refs.
704 e397b6db 2019-02-04 stsp * We're iterating the list anyway, so insert elements sorted by name.
706 7a3c76f5 2019-02-05 stsp re = SIMPLEQ_FIRST(refs);
707 7a3c76f5 2019-02-05 stsp while (re) {
708 b8bad2ba 2019-08-23 stsp err = (*cmp_cb)(cmp_arg, &cmp, re->ref, new->ref);
710 b8bad2ba 2019-08-23 stsp return err;
711 e397b6db 2019-02-04 stsp if (cmp == 0) {
712 27a1ed03 2019-03-15 stsp /* duplicate */
713 27a1ed03 2019-03-15 stsp free(new->id);
715 505287be 2019-03-15 stsp *newp = NULL;
716 7a3c76f5 2019-02-05 stsp return NULL;
717 7a3c76f5 2019-02-05 stsp } else if (cmp > 0) {
719 7a3c76f5 2019-02-05 stsp SIMPLEQ_INSERT_AFTER(refs, prev, new, entry);
721 7a3c76f5 2019-02-05 stsp SIMPLEQ_INSERT_HEAD(refs, new, entry);
722 7a3c76f5 2019-02-05 stsp return NULL;
725 7a3c76f5 2019-02-05 stsp re = SIMPLEQ_NEXT(re, entry);
729 7a3c76f5 2019-02-05 stsp SIMPLEQ_INSERT_TAIL(refs, new, entry);
730 199a4027 2019-02-02 stsp return NULL;
733 a04f49d2 2019-02-04 stsp static const struct got_error *
734 29b5c214 2019-02-04 stsp gather_on_disk_refs(struct got_reflist_head *refs, const char *path_refs,
735 b8bad2ba 2019-08-23 stsp const char *subdir, struct got_repository *repo,
736 b8bad2ba 2019-08-23 stsp got_ref_cmp_cb cmp_cb, void *cmp_arg)
738 a04f49d2 2019-02-04 stsp const struct got_error *err = NULL;
739 a04f49d2 2019-02-04 stsp DIR *d = NULL;
740 a04f49d2 2019-02-04 stsp char *path_subdir;
742 a04f49d2 2019-02-04 stsp if (asprintf(&path_subdir, "%s/%s", path_refs, subdir) == -1)
743 638f9024 2019-05-13 stsp return got_error_from_errno("asprintf");
745 a04f49d2 2019-02-04 stsp d = opendir(path_subdir);
746 a04f49d2 2019-02-04 stsp if (d == NULL)
750 a04f49d2 2019-02-04 stsp struct dirent *dent;
751 a04f49d2 2019-02-04 stsp struct got_reference *ref;
752 a04f49d2 2019-02-04 stsp char *child;
754 a04f49d2 2019-02-04 stsp dent = readdir(d);
755 a04f49d2 2019-02-04 stsp if (dent == NULL)
758 a04f49d2 2019-02-04 stsp if (strcmp(dent->d_name, ".") == 0 ||
759 a04f49d2 2019-02-04 stsp strcmp(dent->d_name, "..") == 0)
762 a04f49d2 2019-02-04 stsp switch (dent->d_type) {
763 a04f49d2 2019-02-04 stsp case DT_REG:
764 2f17228e 2019-05-12 stsp err = open_ref(&ref, path_refs, subdir, dent->d_name,
769 505287be 2019-03-15 stsp struct got_reflist_entry *new;
770 b8bad2ba 2019-08-23 stsp err = insert_ref(&new, refs, ref, repo,
771 b8bad2ba 2019-08-23 stsp cmp_cb, cmp_arg);
772 505287be 2019-03-15 stsp if (err || new == NULL /* duplicate */)
773 505287be 2019-03-15 stsp got_ref_close(ref);
778 a04f49d2 2019-02-04 stsp case DT_DIR:
779 a04f49d2 2019-02-04 stsp if (asprintf(&child, "%s%s%s", subdir,
780 a04f49d2 2019-02-04 stsp subdir[0] == '\0' ? "" : "/", dent->d_name) == -1) {
781 638f9024 2019-05-13 stsp err = got_error_from_errno("asprintf");
784 b8bad2ba 2019-08-23 stsp err = gather_on_disk_refs(refs, path_refs, child, repo,
785 b8bad2ba 2019-08-23 stsp cmp_cb, cmp_arg);
786 a04f49d2 2019-02-04 stsp free(child);
794 a04f49d2 2019-02-04 stsp closedir(d);
795 a04f49d2 2019-02-04 stsp free(path_subdir);
796 a04f49d2 2019-02-04 stsp return err;
799 199a4027 2019-02-02 stsp const struct got_error *
800 29606af7 2019-08-23 stsp got_ref_list(struct got_reflist_head *refs, struct got_repository *repo,
801 b8bad2ba 2019-08-23 stsp const char *ref_namespace, got_ref_cmp_cb cmp_cb, void *cmp_arg)
803 199a4027 2019-02-02 stsp const struct got_error *err;
804 a04f49d2 2019-02-04 stsp char *packed_refs_path, *path_refs = NULL;
805 6aeab596 2019-08-28 stsp const char *ondisk_ref_namespace = NULL;
806 29b5c214 2019-02-04 stsp FILE *f = NULL;
807 199a4027 2019-02-02 stsp struct got_reference *ref;
808 505287be 2019-03-15 stsp struct got_reflist_entry *new;
810 29606af7 2019-08-23 stsp if (ref_namespace == NULL || ref_namespace[0] == '\0') {
811 29606af7 2019-08-23 stsp /* HEAD ref should always exist. */
812 29606af7 2019-08-23 stsp path_refs = get_refs_dir_path(repo, GOT_REF_HEAD);
813 29606af7 2019-08-23 stsp if (path_refs == NULL) {
814 29606af7 2019-08-23 stsp err = got_error_from_errno("get_refs_dir_path");
817 29606af7 2019-08-23 stsp err = open_ref(&ref, path_refs, "", GOT_REF_HEAD, 0);
820 b8bad2ba 2019-08-23 stsp err = insert_ref(&new, refs, ref, repo, cmp_cb, cmp_arg);
821 29606af7 2019-08-23 stsp if (err || new == NULL /* duplicate */)
822 29606af7 2019-08-23 stsp got_ref_close(ref);
827 6aeab596 2019-08-28 stsp ondisk_ref_namespace = ref_namespace;
828 29606af7 2019-08-23 stsp if (ref_namespace && strncmp(ref_namespace, "refs/", 5) == 0)
829 6aeab596 2019-08-28 stsp ondisk_ref_namespace += 5;
831 29b5c214 2019-02-04 stsp /* Gather on-disk refs before parsing packed-refs. */
832 29b5c214 2019-02-04 stsp free(path_refs);
833 29b5c214 2019-02-04 stsp path_refs = get_refs_dir_path(repo, "");
834 29b5c214 2019-02-04 stsp if (path_refs == NULL) {
835 638f9024 2019-05-13 stsp err = got_error_from_errno("get_refs_dir_path");
838 29606af7 2019-08-23 stsp err = gather_on_disk_refs(refs, path_refs,
839 6aeab596 2019-08-28 stsp ondisk_ref_namespace ? ondisk_ref_namespace : "", repo,
840 6aeab596 2019-08-28 stsp cmp_cb, cmp_arg);
845 29b5c214 2019-02-04 stsp * The packed-refs file may contain redundant entries, in which
846 29b5c214 2019-02-04 stsp * case on-disk refs take precedence.
848 199a4027 2019-02-02 stsp packed_refs_path = got_repo_get_path_packed_refs(repo);
849 29b5c214 2019-02-04 stsp if (packed_refs_path == NULL) {
850 638f9024 2019-05-13 stsp err = got_error_from_errno("got_repo_get_path_packed_refs");
854 199a4027 2019-02-02 stsp f = fopen(packed_refs_path, "r");
855 199a4027 2019-02-02 stsp free(packed_refs_path);
857 199a4027 2019-02-02 stsp char *line;
858 199a4027 2019-02-02 stsp size_t len;
859 199a4027 2019-02-02 stsp const char delim[3] = {'\0', '\0', '\0'};
861 199a4027 2019-02-02 stsp line = fparseln(f, &len, NULL, delim, 0);
862 0bb4abae 2019-03-15 stsp if (line == NULL) {
863 0bb4abae 2019-03-15 stsp if (feof(f))
865 0bb4abae 2019-03-15 stsp err = got_ferror(f, GOT_ERR_BAD_REF_DATA);
868 199a4027 2019-02-02 stsp err = parse_packed_ref_line(&ref, NULL, line);
869 0bb4abae 2019-03-15 stsp free(line);
873 29606af7 2019-08-23 stsp if (ref_namespace) {
874 29606af7 2019-08-23 stsp const char *name;
875 29606af7 2019-08-23 stsp name = got_ref_get_name(ref);
876 29606af7 2019-08-23 stsp if (strncmp(name, ref_namespace,
877 29606af7 2019-08-23 stsp strlen(ref_namespace)) != 0) {
878 29606af7 2019-08-23 stsp got_ref_close(ref);
882 b8bad2ba 2019-08-23 stsp err = insert_ref(&new, refs, ref, repo,
883 b8bad2ba 2019-08-23 stsp cmp_cb, cmp_arg);
884 505287be 2019-03-15 stsp if (err || new == NULL /* duplicate */)
885 505287be 2019-03-15 stsp got_ref_close(ref);
892 a04f49d2 2019-02-04 stsp free(path_refs);
893 fb43ecf1 2019-02-11 stsp if (f && fclose(f) != 0 && err == NULL)
894 638f9024 2019-05-13 stsp err = got_error_from_errno("fclose");
895 199a4027 2019-02-02 stsp return err;
899 e2e879a0 2019-03-11 stsp got_ref_list_free(struct got_reflist_head *refs)
901 e2e879a0 2019-03-11 stsp struct got_reflist_entry *re;
903 e2e879a0 2019-03-11 stsp while (!SIMPLEQ_EMPTY(refs)) {
904 e2e879a0 2019-03-11 stsp re = SIMPLEQ_FIRST(refs);
905 e2e879a0 2019-03-11 stsp SIMPLEQ_REMOVE_HEAD(refs, entry);
906 e2e879a0 2019-03-11 stsp got_ref_close(re->ref);
907 e2e879a0 2019-03-11 stsp free(re->id);
914 b249b824 2019-05-09 stsp got_ref_is_symbolic(struct got_reference *ref)
916 b249b824 2019-05-09 stsp return (ref->flags & GOT_REF_IS_SYMBOLIC);
919 b249b824 2019-05-09 stsp const struct got_error *
920 b249b824 2019-05-09 stsp got_ref_change_ref(struct got_reference *ref, struct got_object_id *id)
922 b249b824 2019-05-09 stsp if (ref->flags & GOT_REF_IS_SYMBOLIC)
923 b249b824 2019-05-09 stsp return got_error(GOT_ERR_BAD_REF_TYPE);
925 b249b824 2019-05-09 stsp memcpy(ref->ref.ref.sha1, id->sha1, sizeof(ref->ref.ref.sha1));
926 b249b824 2019-05-09 stsp return NULL;
929 9e672c74 2019-03-11 stsp const struct got_error *
930 b249b824 2019-05-09 stsp got_ref_change_symref(struct got_reference *ref, char *refname)
932 b249b824 2019-05-09 stsp char *new_name;
934 b249b824 2019-05-09 stsp if ((ref->flags & GOT_REF_IS_SYMBOLIC) == 0)
935 b249b824 2019-05-09 stsp return got_error(GOT_ERR_BAD_REF_TYPE);
937 b249b824 2019-05-09 stsp new_name = strdup(refname);
938 b249b824 2019-05-09 stsp if (new_name == NULL)
939 638f9024 2019-05-13 stsp return got_error_from_errno("strdup");
941 b249b824 2019-05-09 stsp free(ref->ref.symref.name);
942 b249b824 2019-05-09 stsp ref->ref.symref.name = new_name;
943 b249b824 2019-05-09 stsp return NULL;
946 b249b824 2019-05-09 stsp const struct got_error *
947 9e672c74 2019-03-11 stsp got_ref_write(struct got_reference *ref, struct got_repository *repo)
949 9e672c74 2019-03-11 stsp const struct got_error *err = NULL, *unlock_err = NULL;
950 9e672c74 2019-03-11 stsp const char *name = got_ref_get_name(ref);
951 9e672c74 2019-03-11 stsp char *path_refs = NULL, *path = NULL, *tmppath = NULL;
952 9e672c74 2019-03-11 stsp struct got_lockfile *lf = NULL;
953 9e672c74 2019-03-11 stsp FILE *f = NULL;
955 9e672c74 2019-03-11 stsp struct stat sb;
957 9e672c74 2019-03-11 stsp path_refs = get_refs_dir_path(repo, name);
958 9e672c74 2019-03-11 stsp if (path_refs == NULL) {
959 638f9024 2019-05-13 stsp err = got_error_from_errno2("get_refs_dir_path", name);
963 9e672c74 2019-03-11 stsp if (asprintf(&path, "%s/%s", path_refs, name) == -1) {
964 638f9024 2019-05-13 stsp err = got_error_from_errno("asprintf");
968 9e672c74 2019-03-11 stsp err = got_opentemp_named(&tmppath, &f, path);
970 d1667f0d 2019-03-11 stsp char *parent;
971 49c7094f 2019-03-11 stsp if (!(err->code == GOT_ERR_ERRNO && errno == ENOENT))
973 d1667f0d 2019-03-11 stsp err = got_path_dirname(&parent, path);
976 0cd1c46a 2019-03-11 stsp err = got_path_mkdir(parent);
977 5e1c9f23 2019-03-11 stsp free(parent);
980 0cd1c46a 2019-03-11 stsp err = got_opentemp_named(&tmppath, &f, path);
985 9e672c74 2019-03-11 stsp if (ref->flags & GOT_REF_IS_SYMBOLIC) {
986 9e672c74 2019-03-11 stsp n = fprintf(f, "ref: %s\n", ref->ref.symref.ref);
987 9e672c74 2019-03-11 stsp if (n != strlen(ref->ref.symref.ref) + 6) {
988 9e672c74 2019-03-11 stsp err = got_ferror(f, GOT_ERR_IO);
992 9e672c74 2019-03-11 stsp char hex[SHA1_DIGEST_STRING_LENGTH];
993 9e672c74 2019-03-11 stsp if (got_sha1_digest_to_str(ref->ref.ref.sha1, hex,
994 9e672c74 2019-03-11 stsp sizeof(hex)) == NULL) {
995 9e672c74 2019-03-11 stsp err = got_error(GOT_ERR_BAD_REF_DATA);
998 9e672c74 2019-03-11 stsp n = fprintf(f, "%s\n", hex);
999 8fa2f096 2019-03-11 stsp if (n != sizeof(hex)) {
1000 9e672c74 2019-03-11 stsp err = got_ferror(f, GOT_ERR_IO);
1001 9e672c74 2019-03-11 stsp goto done;
1005 2f17228e 2019-05-12 stsp if (ref->lf == NULL) {
1006 2f17228e 2019-05-12 stsp err = got_lockfile_lock(&lf, path);
1008 2f17228e 2019-05-12 stsp goto done;
1011 9e672c74 2019-03-11 stsp /* XXX: check if old content matches our expectations? */
1013 0cd1c46a 2019-03-11 stsp if (stat(path, &sb) != 0) {
1014 0cd1c46a 2019-03-11 stsp if (errno != ENOENT) {
1015 638f9024 2019-05-13 stsp err = got_error_from_errno2("stat", path);
1016 0cd1c46a 2019-03-11 stsp goto done;
1018 0cd1c46a 2019-03-11 stsp sb.st_mode = GOT_DEFAULT_FILE_MODE;
1021 9e672c74 2019-03-11 stsp if (rename(tmppath, path) != 0) {
1022 638f9024 2019-05-13 stsp err = got_error_from_errno3("rename", tmppath, path);
1023 9e672c74 2019-03-11 stsp goto done;
1025 9e672c74 2019-03-11 stsp free(tmppath);
1026 9e672c74 2019-03-11 stsp tmppath = NULL;
1028 9e672c74 2019-03-11 stsp if (chmod(path, sb.st_mode) != 0) {
1029 638f9024 2019-05-13 stsp err = got_error_from_errno2("chmod", path);
1030 9e672c74 2019-03-11 stsp goto done;
1033 2f17228e 2019-05-12 stsp if (ref->lf == NULL && lf)
1034 9e672c74 2019-03-11 stsp unlock_err = got_lockfile_unlock(lf);
1036 9e672c74 2019-03-11 stsp if (fclose(f) != 0 && err == NULL)
1037 638f9024 2019-05-13 stsp err = got_error_from_errno("fclose");
1039 9e672c74 2019-03-11 stsp free(path_refs);
1040 9e672c74 2019-03-11 stsp free(path);
1041 9e672c74 2019-03-11 stsp if (tmppath) {
1042 9e672c74 2019-03-11 stsp if (unlink(tmppath) != 0 && err == NULL)
1043 638f9024 2019-05-13 stsp err = got_error_from_errno2("unlink", tmppath);
1044 9e672c74 2019-03-11 stsp free(tmppath);
1046 2d2e1378 2019-03-11 stsp return err ? err : unlock_err;
1049 598a8b91 2019-03-15 stsp static const struct got_error *
1050 598a8b91 2019-03-15 stsp delete_packed_ref(struct got_reference *delref, struct got_repository *repo)
1052 598a8b91 2019-03-15 stsp const struct got_error *err = NULL, *unlock_err = NULL;
1053 598a8b91 2019-03-15 stsp struct got_lockfile *lf = NULL;
1054 598a8b91 2019-03-15 stsp FILE *f = NULL, *tmpf = NULL;
1055 598a8b91 2019-03-15 stsp char *packed_refs_path, *tmppath = NULL;
1056 598a8b91 2019-03-15 stsp struct got_reflist_head refs;
1057 598a8b91 2019-03-15 stsp int found_delref = 0;
1059 598a8b91 2019-03-15 stsp /* The packed-refs file does not cotain symbolic references. */
1060 598a8b91 2019-03-15 stsp if (delref->flags & GOT_REF_IS_SYMBOLIC)
1061 598a8b91 2019-03-15 stsp return got_error(GOT_ERR_BAD_REF_DATA);
1063 598a8b91 2019-03-15 stsp SIMPLEQ_INIT(&refs);
1065 598a8b91 2019-03-15 stsp packed_refs_path = got_repo_get_path_packed_refs(repo);
1066 598a8b91 2019-03-15 stsp if (packed_refs_path == NULL)
1067 638f9024 2019-05-13 stsp return got_error_from_errno("got_repo_get_path_packed_refs");
1069 598a8b91 2019-03-15 stsp err = got_opentemp_named(&tmppath, &tmpf, packed_refs_path);
1071 598a8b91 2019-03-15 stsp goto done;
1073 2f17228e 2019-05-12 stsp if (delref->lf == NULL) {
1074 2f17228e 2019-05-12 stsp err = got_lockfile_lock(&lf, packed_refs_path);
1076 2f17228e 2019-05-12 stsp goto done;
1079 598a8b91 2019-03-15 stsp f = fopen(packed_refs_path, "r");
1080 598a8b91 2019-03-15 stsp if (f == NULL) {
1081 638f9024 2019-05-13 stsp err = got_error_from_errno2("fopen", packed_refs_path);
1082 598a8b91 2019-03-15 stsp goto done;
1085 598a8b91 2019-03-15 stsp char *line;
1086 598a8b91 2019-03-15 stsp size_t len;
1087 598a8b91 2019-03-15 stsp const char delim[3] = {'\0', '\0', '\0'};
1088 598a8b91 2019-03-15 stsp struct got_reference *ref;
1089 598a8b91 2019-03-15 stsp struct got_reflist_entry *new;
1091 598a8b91 2019-03-15 stsp line = fparseln(f, &len, NULL, delim, 0);
1092 598a8b91 2019-03-15 stsp if (line == NULL) {
1093 598a8b91 2019-03-15 stsp if (feof(f))
1095 598a8b91 2019-03-15 stsp err = got_ferror(f, GOT_ERR_BAD_REF_DATA);
1096 598a8b91 2019-03-15 stsp goto done;
1098 598a8b91 2019-03-15 stsp err = parse_packed_ref_line(&ref, NULL, line);
1099 598a8b91 2019-03-15 stsp free(line);
1101 598a8b91 2019-03-15 stsp goto done;
1102 598a8b91 2019-03-15 stsp if (ref == NULL)
1105 598a8b91 2019-03-15 stsp if (strcmp(ref->ref.ref.name, delref->ref.ref.name) == 0 &&
1106 598a8b91 2019-03-15 stsp memcmp(ref->ref.ref.sha1, delref->ref.ref.sha1,
1107 598a8b91 2019-03-15 stsp sizeof(delref->ref.ref.sha1)) == 0) {
1108 598a8b91 2019-03-15 stsp found_delref = 1;
1109 598a8b91 2019-03-15 stsp got_ref_close(ref);
1113 b8bad2ba 2019-08-23 stsp err = insert_ref(&new, &refs, ref, repo,
1114 b8bad2ba 2019-08-23 stsp got_ref_cmp_by_name, NULL);
1115 598a8b91 2019-03-15 stsp if (err || new == NULL /* duplicate */)
1116 598a8b91 2019-03-15 stsp got_ref_close(ref);
1118 598a8b91 2019-03-15 stsp goto done;
1121 598a8b91 2019-03-15 stsp if (found_delref) {
1122 598a8b91 2019-03-15 stsp struct got_reflist_entry *re;
1124 598a8b91 2019-03-15 stsp struct stat sb;
1126 598a8b91 2019-03-15 stsp n = fprintf(tmpf, "%s\n", GOT_PACKED_REFS_HEADER);
1127 598a8b91 2019-03-15 stsp if (n != sizeof(GOT_PACKED_REFS_HEADER)) {
1128 598a8b91 2019-03-15 stsp err = got_ferror(f, GOT_ERR_IO);
1129 598a8b91 2019-03-15 stsp goto done;
1132 598a8b91 2019-03-15 stsp SIMPLEQ_FOREACH(re, &refs, entry) {
1133 598a8b91 2019-03-15 stsp uint8_t hex[SHA1_DIGEST_STRING_LENGTH];
1135 598a8b91 2019-03-15 stsp if (got_sha1_digest_to_str(re->ref->ref.ref.sha1, hex,
1136 598a8b91 2019-03-15 stsp sizeof(hex)) == NULL) {
1137 598a8b91 2019-03-15 stsp err = got_error(GOT_ERR_BAD_REF_DATA);
1138 598a8b91 2019-03-15 stsp goto done;
1140 598a8b91 2019-03-15 stsp n = fprintf(tmpf, "%s ", hex);
1141 598a8b91 2019-03-15 stsp if (n != sizeof(hex)) {
1142 598a8b91 2019-03-15 stsp err = got_ferror(f, GOT_ERR_IO);
1143 598a8b91 2019-03-15 stsp goto done;
1145 598a8b91 2019-03-15 stsp n = fprintf(tmpf, "%s\n", re->ref->ref.ref.name);
1146 598a8b91 2019-03-15 stsp if (n != strlen(re->ref->ref.ref.name) + 1) {
1147 598a8b91 2019-03-15 stsp err = got_ferror(f, GOT_ERR_IO);
1148 598a8b91 2019-03-15 stsp goto done;
1152 598a8b91 2019-03-15 stsp if (fflush(tmpf) != 0) {
1153 638f9024 2019-05-13 stsp err = got_error_from_errno("fflush");
1154 598a8b91 2019-03-15 stsp goto done;
1157 598a8b91 2019-03-15 stsp if (stat(packed_refs_path, &sb) != 0) {
1158 598a8b91 2019-03-15 stsp if (errno != ENOENT) {
1159 638f9024 2019-05-13 stsp err = got_error_from_errno2("stat",
1160 230a42bd 2019-05-11 jcs packed_refs_path);
1161 598a8b91 2019-03-15 stsp goto done;
1163 598a8b91 2019-03-15 stsp sb.st_mode = GOT_DEFAULT_FILE_MODE;
1166 598a8b91 2019-03-15 stsp if (rename(tmppath, packed_refs_path) != 0) {
1167 638f9024 2019-05-13 stsp err = got_error_from_errno3("rename", tmppath,
1168 230a42bd 2019-05-11 jcs packed_refs_path);
1169 598a8b91 2019-03-15 stsp goto done;
1172 598a8b91 2019-03-15 stsp if (chmod(packed_refs_path, sb.st_mode) != 0) {
1173 638f9024 2019-05-13 stsp err = got_error_from_errno2("chmod",
1174 230a42bd 2019-05-11 jcs packed_refs_path);
1175 598a8b91 2019-03-15 stsp goto done;
1179 2f17228e 2019-05-12 stsp if (delref->lf == NULL && lf)
1180 598a8b91 2019-03-15 stsp unlock_err = got_lockfile_unlock(lf);
1182 598a8b91 2019-03-15 stsp if (fclose(f) != 0 && err == NULL)
1183 638f9024 2019-05-13 stsp err = got_error_from_errno("fclose");
1185 598a8b91 2019-03-15 stsp if (tmpf) {
1186 598a8b91 2019-03-15 stsp unlink(tmppath);
1187 598a8b91 2019-03-15 stsp if (fclose(tmpf) != 0 && err == NULL)
1188 638f9024 2019-05-13 stsp err = got_error_from_errno("fclose");
1190 598a8b91 2019-03-15 stsp free(tmppath);
1191 598a8b91 2019-03-15 stsp free(packed_refs_path);
1192 598a8b91 2019-03-15 stsp got_ref_list_free(&refs);
1193 598a8b91 2019-03-15 stsp return err ? err : unlock_err;
1196 2d2e1378 2019-03-11 stsp const struct got_error *
1197 2d2e1378 2019-03-11 stsp got_ref_delete(struct got_reference *ref, struct got_repository *repo)
1199 2d2e1378 2019-03-11 stsp const struct got_error *err = NULL, *unlock_err = NULL;
1200 2d2e1378 2019-03-11 stsp const char *name = got_ref_get_name(ref);
1201 2d2e1378 2019-03-11 stsp char *path_refs = NULL, *path = NULL;
1202 2d2e1378 2019-03-11 stsp struct got_lockfile *lf = NULL;
1204 598a8b91 2019-03-15 stsp if (ref->flags & GOT_REF_IS_PACKED)
1205 598a8b91 2019-03-15 stsp return delete_packed_ref(ref, repo);
1207 2d2e1378 2019-03-11 stsp path_refs = get_refs_dir_path(repo, name);
1208 2d2e1378 2019-03-11 stsp if (path_refs == NULL) {
1209 638f9024 2019-05-13 stsp err = got_error_from_errno2("get_refs_dir_path", name);
1210 2d2e1378 2019-03-11 stsp goto done;
1213 2d2e1378 2019-03-11 stsp if (asprintf(&path, "%s/%s", path_refs, name) == -1) {
1214 638f9024 2019-05-13 stsp err = got_error_from_errno("asprintf");
1215 2d2e1378 2019-03-11 stsp goto done;
1218 2f17228e 2019-05-12 stsp if (ref->lf == NULL) {
1219 2f17228e 2019-05-12 stsp err = got_lockfile_lock(&lf, path);
1221 2f17228e 2019-05-12 stsp goto done;
1224 2d2e1378 2019-03-11 stsp /* XXX: check if old content matches our expectations? */
1226 2d2e1378 2019-03-11 stsp if (unlink(path) != 0)
1227 638f9024 2019-05-13 stsp err = got_error_from_errno2("unlink", path);
1229 2f17228e 2019-05-12 stsp if (ref->lf == NULL && lf)
1230 2d2e1378 2019-03-11 stsp unlock_err = got_lockfile_unlock(lf);
1232 2d2e1378 2019-03-11 stsp free(path_refs);
1233 2d2e1378 2019-03-11 stsp free(path);
1234 9e672c74 2019-03-11 stsp return err ? err : unlock_err;
1237 2f17228e 2019-05-12 stsp const struct got_error *
1238 2f17228e 2019-05-12 stsp got_ref_unlock(struct got_reference *ref)
1240 2f17228e 2019-05-12 stsp const struct got_error *err;
1241 2f17228e 2019-05-12 stsp err = got_lockfile_unlock(ref->lf);
1242 2f17228e 2019-05-12 stsp ref->lf = NULL;
1243 2f17228e 2019-05-12 stsp return err;
