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 5261c201 2018-04-01 stsp #include <sha1.h>
25 5261c201 2018-04-01 stsp #include <stdio.h>
26 5261c201 2018-04-01 stsp #include <stdlib.h>
27 5261c201 2018-04-01 stsp #include <string.h>
28 5261c201 2018-04-01 stsp #include <util.h>
29 5261c201 2018-04-01 stsp #include <zlib.h>
30 788c352e 2018-06-16 stsp #include <time.h>
31 0cd1c46a 2019-03-11 stsp #include <libgen.h>
33 5261c201 2018-04-01 stsp #include "got_error.h"
34 5261c201 2018-04-01 stsp #include "got_object.h"
35 5261c201 2018-04-01 stsp #include "got_repository.h"
36 5261c201 2018-04-01 stsp #include "got_reference.h"
37 9e672c74 2019-03-11 stsp #include "got_opentemp.h"
38 324d37e7 2019-05-11 stsp #include "got_path.h"
40 5261c201 2018-04-01 stsp #include "got_lib_sha1.h"
41 5261c201 2018-04-01 stsp #include "got_lib_delta.h"
42 63581804 2018-07-09 stsp #include "got_lib_inflate.h"
43 5261c201 2018-04-01 stsp #include "got_lib_object.h"
44 f77a24b0 2019-03-11 stsp #include "got_lib_lockfile.h"
46 fb79db15 2019-02-01 stsp #ifndef nitems
47 fb79db15 2019-02-01 stsp #define nitems(_a) (sizeof(_a) / sizeof((_a)[0]))
50 d1f2edc9 2018-06-13 stsp #define GOT_REF_HEADS "heads"
51 d1f2edc9 2018-06-13 stsp #define GOT_REF_TAGS "tags"
52 d1f2edc9 2018-06-13 stsp #define GOT_REF_REMOTES "remotes"
55 598a8b91 2019-03-15 stsp * We do not resolve tags yet, and don't yet care about sorting refs either,
56 598a8b91 2019-03-15 stsp * so packed-refs files we write contain a minimal header which disables all
57 598a8b91 2019-03-15 stsp * packed-refs "traits" supported by Git.
59 598a8b91 2019-03-15 stsp #define GOT_PACKED_REFS_HEADER "# pack-refs with:"
61 5261c201 2018-04-01 stsp /* A symbolic reference. */
62 5261c201 2018-04-01 stsp struct got_symref {
67 5261c201 2018-04-01 stsp /* A non-symbolic reference (there is no better designation). */
68 5261c201 2018-04-01 stsp struct got_ref {
70 5261c201 2018-04-01 stsp u_int8_t sha1[SHA1_DIGEST_LENGTH];
73 5261c201 2018-04-01 stsp /* A reference which points to an arbitrary object. */
74 5261c201 2018-04-01 stsp struct got_reference {
75 5261c201 2018-04-01 stsp unsigned int flags;
76 5261c201 2018-04-01 stsp #define GOT_REF_IS_SYMBOLIC 0x01
77 f9267c9a 2019-03-15 stsp #define GOT_REF_IS_PACKED 0x02
80 5261c201 2018-04-01 stsp struct got_ref ref;
81 5261c201 2018-04-01 stsp struct got_symref symref;
84 2f17228e 2019-05-12 stsp struct got_lockfile *lf;
87 5261c201 2018-04-01 stsp static const struct got_error *
88 f9267c9a 2019-03-15 stsp alloc_ref(struct got_reference **ref, const char *name,
89 f9267c9a 2019-03-15 stsp struct got_object_id *id, int flags)
91 f9267c9a 2019-03-15 stsp const struct got_error *err = NULL;
93 f9267c9a 2019-03-15 stsp *ref = calloc(1, sizeof(**ref));
94 f9267c9a 2019-03-15 stsp if (*ref == NULL)
95 638f9024 2019-05-13 stsp return got_error_from_errno("calloc");
97 80d5fc1f 2019-03-15 stsp memcpy((*ref)->ref.ref.sha1, id->sha1, sizeof((*ref)->ref.ref.sha1));
98 c980e470 2019-03-15 stsp (*ref)->flags = flags;
99 f9267c9a 2019-03-15 stsp (*ref)->ref.ref.name = strdup(name);
100 f9267c9a 2019-03-15 stsp if ((*ref)->ref.ref.name == NULL) {
101 638f9024 2019-05-13 stsp err = got_error_from_errno("strdup");
102 c980e470 2019-03-15 stsp got_ref_close(*ref);
103 f9267c9a 2019-03-15 stsp *ref = NULL;
105 f9267c9a 2019-03-15 stsp return err;
108 f9267c9a 2019-03-15 stsp static const struct got_error *
109 f9267c9a 2019-03-15 stsp alloc_symref(struct got_reference **ref, const char *name,
110 f9267c9a 2019-03-15 stsp const char *target_ref, int flags)
112 f9267c9a 2019-03-15 stsp const struct got_error *err = NULL;
114 5261c201 2018-04-01 stsp *ref = calloc(1, sizeof(**ref));
115 5261c201 2018-04-01 stsp if (*ref == NULL)
116 638f9024 2019-05-13 stsp return got_error_from_errno("calloc");
118 f9267c9a 2019-03-15 stsp (*ref)->flags = GOT_REF_IS_SYMBOLIC | flags;
119 f9267c9a 2019-03-15 stsp (*ref)->ref.symref.name = strdup(name);
120 f9267c9a 2019-03-15 stsp if ((*ref)->ref.symref.name == NULL) {
121 638f9024 2019-05-13 stsp err = got_error_from_errno("strdup");
122 f9267c9a 2019-03-15 stsp got_ref_close(*ref);
123 f9267c9a 2019-03-15 stsp *ref = NULL;
125 f9267c9a 2019-03-15 stsp (*ref)->ref.symref.ref = strdup(target_ref);
126 f9267c9a 2019-03-15 stsp if ((*ref)->ref.symref.ref == NULL) {
127 638f9024 2019-05-13 stsp err = got_error_from_errno("strdup");
128 f9267c9a 2019-03-15 stsp got_ref_close(*ref);
129 f9267c9a 2019-03-15 stsp *ref = NULL;
131 f9267c9a 2019-03-15 stsp return err;
134 5261c201 2018-04-01 stsp static const struct got_error *
135 f9267c9a 2019-03-15 stsp parse_symref(struct got_reference **ref, const char *name, const char *line)
137 f9267c9a 2019-03-15 stsp if (line[0] == '\0')
138 f9267c9a 2019-03-15 stsp return got_error(GOT_ERR_BAD_REF_DATA);
140 f9267c9a 2019-03-15 stsp return alloc_symref(ref, name, line, 0);
143 f9267c9a 2019-03-15 stsp static const struct got_error *
144 5261c201 2018-04-01 stsp parse_ref_line(struct got_reference **ref, const char *name, const char *line)
146 5892cdd6 2019-03-10 stsp struct got_object_id id;
148 5261c201 2018-04-01 stsp if (strncmp(line, "ref: ", 5) == 0) {
150 5261c201 2018-04-01 stsp return parse_symref(ref, name, line);
153 5892cdd6 2019-03-10 stsp if (!got_parse_sha1_digest(id.sha1, line))
154 30c0868d 2019-02-03 stsp return got_error(GOT_ERR_BAD_REF_DATA);
156 f9267c9a 2019-03-15 stsp return alloc_ref(ref, name, &id, 0);
159 5261c201 2018-04-01 stsp static const struct got_error *
160 5261c201 2018-04-01 stsp parse_ref_file(struct got_reference **ref, const char *name,
161 2f17228e 2019-05-12 stsp const char *abspath, int lock)
163 5261c201 2018-04-01 stsp const struct got_error *err = NULL;
165 5261c201 2018-04-01 stsp char *line;
166 5261c201 2018-04-01 stsp size_t len;
167 5261c201 2018-04-01 stsp const char delim[3] = {'\0', '\0', '\0'};
168 2f17228e 2019-05-12 stsp struct got_lockfile *lf = NULL;
170 2f17228e 2019-05-12 stsp if (lock) {
171 2f17228e 2019-05-12 stsp err = got_lockfile_lock(&lf, abspath);
173 2f17228e 2019-05-12 stsp return (err);
176 c0a1c016 2019-03-15 stsp f = fopen(abspath, "rb");
177 f5c58ad1 2019-05-12 stsp if (f == NULL) {
179 f5c58ad1 2019-05-12 stsp got_lockfile_unlock(lf);
180 1e37702e 2019-02-04 stsp return NULL;
183 5261c201 2018-04-01 stsp line = fparseln(f, &len, NULL, delim, 0);
184 5261c201 2018-04-01 stsp if (line == NULL) {
185 30c0868d 2019-02-03 stsp err = got_error(GOT_ERR_BAD_REF_DATA);
187 f5c58ad1 2019-05-12 stsp got_lockfile_unlock(lf);
191 5261c201 2018-04-01 stsp err = parse_ref_line(ref, name, line);
192 f5c58ad1 2019-05-12 stsp if (lock) {
194 f5c58ad1 2019-05-12 stsp got_lockfile_unlock(lf);
197 f5c58ad1 2019-05-12 stsp (*ref)->lf = lf;
199 f5c58ad1 2019-05-12 stsp got_lockfile_unlock(lf);
203 5261c201 2018-04-01 stsp free(line);
204 2f17228e 2019-05-12 stsp if (fclose(f) != 0 && err == NULL) {
205 638f9024 2019-05-13 stsp err = got_error_from_errno("fclose");
206 2f17228e 2019-05-12 stsp if (*ref) {
208 f5c58ad1 2019-05-12 stsp got_ref_unlock(*ref);
209 2f17228e 2019-05-12 stsp got_ref_close(*ref);
210 2f17228e 2019-05-12 stsp *ref = NULL;
213 5261c201 2018-04-01 stsp return err;
217 c5f754cc 2019-02-01 stsp is_well_known_ref(const char *refname)
219 c5f754cc 2019-02-01 stsp return (strcmp(refname, GOT_REF_HEAD) == 0 ||
220 5261c201 2018-04-01 stsp strcmp(refname, GOT_REF_ORIG_HEAD) == 0 ||
221 5261c201 2018-04-01 stsp strcmp(refname, GOT_REF_MERGE_HEAD) == 0 ||
222 c5f754cc 2019-02-01 stsp strcmp(refname, GOT_REF_FETCH_HEAD) == 0);
225 c5f754cc 2019-02-01 stsp static char *
226 c5f754cc 2019-02-01 stsp get_refs_dir_path(struct got_repository *repo, const char *refname)
228 c5f754cc 2019-02-01 stsp if (is_well_known_ref(refname) || strncmp(refname, "refs/", 5) == 0)
229 6e9da951 2019-01-06 stsp return strdup(got_repo_get_path_git_dir(repo));
231 5261c201 2018-04-01 stsp return got_repo_get_path_refs(repo);
235 f77a24b0 2019-03-11 stsp is_valid_ref_name(const char *name)
237 f77a24b0 2019-03-11 stsp const char *s, *slash, *seg;
238 f77a24b0 2019-03-11 stsp const char forbidden[] = { ' ', '~', '^', ':', '?', '*', '[' , '\\' };
239 f77a24b0 2019-03-11 stsp const char *forbidden_seq[] = { "//", "..", "@{" };
240 f77a24b0 2019-03-11 stsp const char *lfs = GOT_LOCKFILE_SUFFIX;
241 f77a24b0 2019-03-11 stsp const size_t lfs_len = sizeof(GOT_LOCKFILE_SUFFIX) - 1;
244 f77a24b0 2019-03-11 stsp if (name[0] == '@' && name[1] == '\0')
247 f77a24b0 2019-03-11 stsp slash = strchr(name, '/');
248 f77a24b0 2019-03-11 stsp if (slash == NULL)
253 f77a24b0 2019-03-11 stsp if (seg[0] == '\0' || seg[0] == '.' || seg[0] == '/')
255 f77a24b0 2019-03-11 stsp while (*s) {
256 f77a24b0 2019-03-11 stsp for (i = 0; i < nitems(forbidden); i++) {
257 f77a24b0 2019-03-11 stsp if (*s == forbidden[i])
260 f77a24b0 2019-03-11 stsp for (i = 0; i < nitems(forbidden_seq); i++) {
261 f77a24b0 2019-03-11 stsp if (s[0] == forbidden_seq[i][0] &&
262 f77a24b0 2019-03-11 stsp s[1] == forbidden_seq[i][1])
265 f77a24b0 2019-03-11 stsp if (iscntrl((unsigned char)s[0]))
267 f77a24b0 2019-03-11 stsp if (s[0] == '.' && s[1] == '\0')
269 f77a24b0 2019-03-11 stsp if (*s == '/') {
270 f77a24b0 2019-03-11 stsp const char *nextseg = s + 1;
271 f77a24b0 2019-03-11 stsp if (nextseg[0] == '\0' || nextseg[0] == '.' ||
272 f77a24b0 2019-03-11 stsp nextseg[0] == '/')
274 f77a24b0 2019-03-11 stsp if (seg <= s - lfs_len &&
275 f77a24b0 2019-03-11 stsp strncmp(s - lfs_len, lfs, lfs_len) == 0)
277 f77a24b0 2019-03-11 stsp seg = nextseg;
282 f77a24b0 2019-03-11 stsp if (seg <= s - lfs_len &&
283 f77a24b0 2019-03-11 stsp strncmp(s - lfs_len, lfs, lfs_len) == 0)
289 5892cdd6 2019-03-10 stsp const struct got_error *
290 5892cdd6 2019-03-10 stsp got_ref_alloc(struct got_reference **ref, const char *name,
291 5892cdd6 2019-03-10 stsp struct got_object_id *id)
293 c191ed66 2019-05-13 stsp const struct got_error *err;
294 c191ed66 2019-05-13 stsp char *absname = NULL;
296 c191ed66 2019-05-13 stsp if (!is_valid_ref_name(name)) {
297 c191ed66 2019-05-13 stsp if (strchr(name, '/') != NULL)
298 c191ed66 2019-05-13 stsp return got_error(GOT_ERR_BAD_REF_NAME);
299 c191ed66 2019-05-13 stsp if (asprintf(&absname, "refs/heads/%s", name) == -1)
300 c191ed66 2019-05-13 stsp return got_error_from_errno("asprintf");
303 c191ed66 2019-05-13 stsp err = alloc_ref(ref, absname ? absname : name, id, 0);
304 c191ed66 2019-05-13 stsp free(absname);
305 c191ed66 2019-05-13 stsp return err;
308 d1f2edc9 2018-06-13 stsp static const struct got_error *
309 fb79db15 2019-02-01 stsp parse_packed_ref_line(struct got_reference **ref, const char *abs_refname,
310 fb79db15 2019-02-01 stsp const char *line)
312 5892cdd6 2019-03-10 stsp struct got_object_id id;
313 5892cdd6 2019-03-10 stsp const char *name;
315 fb79db15 2019-02-01 stsp *ref = NULL;
317 532920c8 2019-02-01 stsp if (line[0] == '#' || line[0] == '^')
318 fb79db15 2019-02-01 stsp return NULL;
320 5892cdd6 2019-03-10 stsp if (!got_parse_sha1_digest(id.sha1, line))
321 30c0868d 2019-02-03 stsp return got_error(GOT_ERR_BAD_REF_DATA);
323 199a4027 2019-02-02 stsp if (abs_refname) {
324 199a4027 2019-02-02 stsp if (strcmp(line + SHA1_DIGEST_STRING_LENGTH, abs_refname) != 0)
325 199a4027 2019-02-02 stsp return NULL;
326 5892cdd6 2019-03-10 stsp name = abs_refname;
328 5892cdd6 2019-03-10 stsp name = line + SHA1_DIGEST_STRING_LENGTH;
330 f9267c9a 2019-03-15 stsp return alloc_ref(ref, name, &id, GOT_REF_IS_PACKED);
333 fb79db15 2019-02-01 stsp static const struct got_error *
334 0dec1cc0 2019-02-01 stsp open_packed_ref(struct got_reference **ref, FILE *f, const char **subdirs,
335 0dec1cc0 2019-02-01 stsp int nsubdirs, const char *refname)
337 fb79db15 2019-02-01 stsp const struct got_error *err = NULL;
338 fb79db15 2019-02-01 stsp char *abs_refname;
339 fb79db15 2019-02-01 stsp char *line;
340 fb79db15 2019-02-01 stsp size_t len;
341 fb79db15 2019-02-01 stsp const char delim[3] = {'\0', '\0', '\0'};
342 0dec1cc0 2019-02-01 stsp int i, ref_is_absolute = (strncmp(refname, "refs/", 5) == 0);
344 1e37702e 2019-02-04 stsp *ref = NULL;
346 0dec1cc0 2019-02-01 stsp if (ref_is_absolute)
347 0dec1cc0 2019-02-01 stsp abs_refname = (char *)refname;
349 fb79db15 2019-02-01 stsp line = fparseln(f, &len, NULL, delim, 0);
350 7ab0422a 2019-03-15 stsp if (line == NULL) {
351 7ab0422a 2019-03-15 stsp if (feof(f))
353 7ab0422a 2019-03-15 stsp err = got_ferror(f, GOT_ERR_BAD_REF_DATA);
356 0dec1cc0 2019-02-01 stsp for (i = 0; i < nsubdirs; i++) {
357 0dec1cc0 2019-02-01 stsp if (!ref_is_absolute &&
358 0dec1cc0 2019-02-01 stsp asprintf(&abs_refname, "refs/%s/%s", subdirs[i],
359 0dec1cc0 2019-02-01 stsp refname) == -1)
360 638f9024 2019-05-13 stsp return got_error_from_errno("asprintf");
361 0dec1cc0 2019-02-01 stsp err = parse_packed_ref_line(ref, abs_refname, line);
362 0dec1cc0 2019-02-01 stsp if (!ref_is_absolute)
363 0dec1cc0 2019-02-01 stsp free(abs_refname);
364 532920c8 2019-02-01 stsp if (err || *ref != NULL)
367 fb79db15 2019-02-01 stsp free(line);
370 fb79db15 2019-02-01 stsp } while (*ref == NULL);
372 fb79db15 2019-02-01 stsp return err;
375 fb79db15 2019-02-01 stsp static const struct got_error *
376 d1f2edc9 2018-06-13 stsp open_ref(struct got_reference **ref, const char *path_refs, const char *subdir,
377 2f17228e 2019-05-12 stsp const char *name, int lock)
379 d1f2edc9 2018-06-13 stsp const struct got_error *err = NULL;
380 a04f49d2 2019-02-04 stsp char *path = NULL;
381 a04f49d2 2019-02-04 stsp char *normpath = NULL;
382 a04f49d2 2019-02-04 stsp char *absname = NULL;
383 a04f49d2 2019-02-04 stsp int ref_is_absolute = (strncmp(name, "refs/", 5) == 0);
384 a04f49d2 2019-02-04 stsp int ref_is_well_known = is_well_known_ref(name);
386 1e37702e 2019-02-04 stsp *ref = NULL;
388 a04f49d2 2019-02-04 stsp if (ref_is_absolute || ref_is_well_known) {
389 a04f49d2 2019-02-04 stsp if (asprintf(&path, "%s/%s", path_refs, name) == -1)
390 638f9024 2019-05-13 stsp return got_error_from_errno("asprintf");
391 a04f49d2 2019-02-04 stsp absname = (char *)name;
393 58908ed0 2019-03-11 stsp if (asprintf(&path, "%s/%s%s%s", path_refs, subdir,
394 58908ed0 2019-03-11 stsp subdir[0] ? "/" : "", name) == -1)
395 638f9024 2019-05-13 stsp return got_error_from_errno("asprintf");
397 58908ed0 2019-03-11 stsp if (asprintf(&absname, "refs/%s%s%s",
398 58908ed0 2019-03-11 stsp subdir, subdir[0] ? "/" : "", name) == -1) {
399 638f9024 2019-05-13 stsp err = got_error_from_errno("asprintf");
404 a04f49d2 2019-02-04 stsp normpath = got_path_normalize(path);
405 d1f2edc9 2018-06-13 stsp if (normpath == NULL) {
406 aedda007 2019-05-13 stsp if (errno == ENOENT)
407 aedda007 2019-05-13 stsp err = NULL;
409 aedda007 2019-05-13 stsp err = got_error_from_errno2("got_path_normalize", path);
413 2f17228e 2019-05-12 stsp err = parse_ref_file(ref, absname, normpath, lock);
415 a04f49d2 2019-02-04 stsp if (!ref_is_absolute && !ref_is_well_known)
416 a04f49d2 2019-02-04 stsp free(absname);
417 a04f49d2 2019-02-04 stsp free(path);
418 d1f2edc9 2018-06-13 stsp free(normpath);
419 d1f2edc9 2018-06-13 stsp return err;
422 5261c201 2018-04-01 stsp const struct got_error *
423 5261c201 2018-04-01 stsp got_ref_open(struct got_reference **ref, struct got_repository *repo,
424 2f17228e 2019-05-12 stsp const char *refname, int lock)
426 5261c201 2018-04-01 stsp const struct got_error *err = NULL;
427 c5f754cc 2019-02-01 stsp char *path_refs = NULL;
428 fb79db15 2019-02-01 stsp const char *subdirs[] = {
429 fb79db15 2019-02-01 stsp GOT_REF_HEADS, GOT_REF_TAGS, GOT_REF_REMOTES
431 c5f754cc 2019-02-01 stsp int i, well_known = is_well_known_ref(refname);
432 a875589a 2019-05-12 stsp struct got_lockfile *lf = NULL;
434 1e37702e 2019-02-04 stsp *ref = NULL;
436 e135804e 2019-02-10 stsp path_refs = get_refs_dir_path(repo, refname);
437 e135804e 2019-02-10 stsp if (path_refs == NULL) {
438 638f9024 2019-05-13 stsp err = got_error_from_errno2("get_refs_dir_path", refname);
442 0885ce8f 2019-05-12 stsp if (well_known) {
443 0885ce8f 2019-05-12 stsp err = open_ref(ref, path_refs, "", refname, lock);
445 c5f754cc 2019-02-01 stsp char *packed_refs_path;
448 e135804e 2019-02-10 stsp /* Search on-disk refs before packed refs! */
449 e135804e 2019-02-10 stsp for (i = 0; i < nitems(subdirs); i++) {
450 2f17228e 2019-05-12 stsp err = open_ref(ref, path_refs, subdirs[i], refname,
452 e135804e 2019-02-10 stsp if (err || *ref)
456 c5f754cc 2019-02-01 stsp packed_refs_path = got_repo_get_path_packed_refs(repo);
457 e135804e 2019-02-10 stsp if (packed_refs_path == NULL) {
458 638f9024 2019-05-13 stsp err = got_error_from_errno(
459 230a42bd 2019-05-11 jcs "got_repo_get_path_packed_refs");
463 2f17228e 2019-05-12 stsp if (lock) {
464 a875589a 2019-05-12 stsp err = got_lockfile_lock(&lf, packed_refs_path);
468 c5f754cc 2019-02-01 stsp f = fopen(packed_refs_path, "rb");
469 c5f754cc 2019-02-01 stsp free(packed_refs_path);
470 c5f754cc 2019-02-01 stsp if (f != NULL) {
471 0dec1cc0 2019-02-01 stsp err = open_packed_ref(ref, f, subdirs, nitems(subdirs),
473 a875589a 2019-05-12 stsp if (!err) {
474 a875589a 2019-05-12 stsp if (fclose(f) != 0) {
475 638f9024 2019-05-13 stsp err = got_error_from_errno("fclose");
476 a875589a 2019-05-12 stsp got_ref_close(*ref);
477 a875589a 2019-05-12 stsp *ref = NULL;
479 a875589a 2019-05-12 stsp (*ref)->lf = lf;
484 5b575c25 2019-05-12 stsp if (!err && *ref == NULL)
485 1e37702e 2019-02-04 stsp err = got_error_not_ref(refname);
486 a875589a 2019-05-12 stsp if (err && lf)
487 a875589a 2019-05-12 stsp got_lockfile_unlock(lf);
488 5261c201 2018-04-01 stsp free(path_refs);
489 5261c201 2018-04-01 stsp return err;
493 5261c201 2018-04-01 stsp got_ref_close(struct got_reference *ref)
495 e09d28b1 2019-03-15 stsp if (ref->flags & GOT_REF_IS_SYMBOLIC) {
496 5261c201 2018-04-01 stsp free(ref->ref.symref.name);
497 e09d28b1 2019-03-15 stsp free(ref->ref.symref.ref);
499 5261c201 2018-04-01 stsp free(ref->ref.ref.name);
503 5261c201 2018-04-01 stsp struct got_reference *
504 5261c201 2018-04-01 stsp got_ref_dup(struct got_reference *ref)
506 5261c201 2018-04-01 stsp struct got_reference *ret;
508 5261c201 2018-04-01 stsp ret = calloc(1, sizeof(*ret));
509 5261c201 2018-04-01 stsp if (ret == NULL)
510 5261c201 2018-04-01 stsp return NULL;
512 5261c201 2018-04-01 stsp ret->flags = ref->flags;
513 5261c201 2018-04-01 stsp if (ref->flags & GOT_REF_IS_SYMBOLIC) {
514 5261c201 2018-04-01 stsp ret->ref.symref.name = strdup(ref->ref.symref.name);
515 5261c201 2018-04-01 stsp if (ret->ref.symref.name == NULL) {
517 5261c201 2018-04-01 stsp return NULL;
519 5261c201 2018-04-01 stsp ret->ref.symref.ref = strdup(ref->ref.symref.ref);
520 5261c201 2018-04-01 stsp if (ret->ref.symref.ref == NULL) {
521 5261c201 2018-04-01 stsp free(ret->ref.symref.name);
523 5261c201 2018-04-01 stsp return NULL;
526 5261c201 2018-04-01 stsp ref->ref.ref.name = strdup(ref->ref.ref.name);
527 5261c201 2018-04-01 stsp if (ref->ref.ref.name == NULL) {
529 5261c201 2018-04-01 stsp return NULL;
531 5261c201 2018-04-01 stsp memcpy(ret->ref.ref.sha1, ref->ref.ref.sha1,
532 80d5fc1f 2019-03-15 stsp sizeof(ret->ref.ref.sha1));
535 5261c201 2018-04-01 stsp return ret;
538 5261c201 2018-04-01 stsp static const struct got_error *
539 5261c201 2018-04-01 stsp resolve_symbolic_ref(struct got_reference **resolved,
540 5261c201 2018-04-01 stsp struct got_repository *repo, struct got_reference *ref)
542 5261c201 2018-04-01 stsp struct got_reference *nextref;
543 5261c201 2018-04-01 stsp const struct got_error *err;
545 2f17228e 2019-05-12 stsp err = got_ref_open(&nextref, repo, ref->ref.symref.ref, 0);
547 5261c201 2018-04-01 stsp return err;
549 5261c201 2018-04-01 stsp if (nextref->flags & GOT_REF_IS_SYMBOLIC)
550 5261c201 2018-04-01 stsp err = resolve_symbolic_ref(resolved, repo, nextref);
552 5261c201 2018-04-01 stsp *resolved = got_ref_dup(nextref);
554 5261c201 2018-04-01 stsp got_ref_close(nextref);
555 5261c201 2018-04-01 stsp return err;
558 5261c201 2018-04-01 stsp const struct got_error *
559 5261c201 2018-04-01 stsp got_ref_resolve(struct got_object_id **id, struct got_repository *repo,
560 5261c201 2018-04-01 stsp struct got_reference *ref)
562 5261c201 2018-04-01 stsp const struct got_error *err;
564 5261c201 2018-04-01 stsp if (ref->flags & GOT_REF_IS_SYMBOLIC) {
565 5261c201 2018-04-01 stsp struct got_reference *resolved = NULL;
566 5261c201 2018-04-01 stsp err = resolve_symbolic_ref(&resolved, repo, ref);
567 5261c201 2018-04-01 stsp if (err == NULL)
568 5261c201 2018-04-01 stsp err = got_ref_resolve(id, repo, resolved);
569 57b6f99a 2019-04-13 stsp if (resolved)
570 57b6f99a 2019-04-13 stsp got_ref_close(resolved);
571 5261c201 2018-04-01 stsp return err;
574 5261c201 2018-04-01 stsp *id = calloc(1, sizeof(**id));
575 5261c201 2018-04-01 stsp if (*id == NULL)
576 638f9024 2019-05-13 stsp return got_error_from_errno("calloc");
577 80d5fc1f 2019-03-15 stsp memcpy((*id)->sha1, ref->ref.ref.sha1, sizeof((*id)->sha1));
578 5261c201 2018-04-01 stsp return NULL;
582 5261c201 2018-04-01 stsp got_ref_to_str(struct got_reference *ref)
586 271d2a38 2018-12-25 stsp if (ref->flags & GOT_REF_IS_SYMBOLIC)
587 271d2a38 2018-12-25 stsp return strdup(ref->ref.symref.ref);
589 271d2a38 2018-12-25 stsp str = malloc(SHA1_DIGEST_STRING_LENGTH);
590 271d2a38 2018-12-25 stsp if (str == NULL)
591 271d2a38 2018-12-25 stsp return NULL;
593 271d2a38 2018-12-25 stsp if (got_sha1_digest_to_str(ref->ref.ref.sha1, str,
594 271d2a38 2018-12-25 stsp SHA1_DIGEST_STRING_LENGTH) == NULL) {
596 271d2a38 2018-12-25 stsp return NULL;
599 5261c201 2018-04-01 stsp return str;
602 0bd18d37 2019-02-01 stsp const char *
603 0bd18d37 2019-02-01 stsp got_ref_get_name(struct got_reference *ref)
605 0bd18d37 2019-02-01 stsp if (ref->flags & GOT_REF_IS_SYMBOLIC)
606 0bd18d37 2019-02-01 stsp return ref->ref.symref.name;
608 0bd18d37 2019-02-01 stsp return ref->ref.ref.name;
611 199a4027 2019-02-02 stsp static const struct got_error *
612 505287be 2019-03-15 stsp insert_ref(struct got_reflist_entry **newp, struct got_reflist_head *refs,
613 505287be 2019-03-15 stsp struct got_reference *ref, struct got_repository *repo)
615 199a4027 2019-02-02 stsp const struct got_error *err;
616 199a4027 2019-02-02 stsp struct got_object_id *id;
617 6249107b 2019-03-15 stsp struct got_reflist_entry *new, *re, *prev = NULL;
620 505287be 2019-03-15 stsp *newp = NULL;
622 7a3c76f5 2019-02-05 stsp err = got_ref_resolve(&id, repo, ref);
624 7a3c76f5 2019-02-05 stsp return err;
626 6fdbf7b0 2019-03-15 stsp new = malloc(sizeof(*new));
627 7a3c76f5 2019-02-05 stsp if (new == NULL) {
629 638f9024 2019-05-13 stsp return got_error_from_errno("malloc");
631 7a3c76f5 2019-02-05 stsp new->ref = ref;
632 7a3c76f5 2019-02-05 stsp new->id = id;
633 505287be 2019-03-15 stsp *newp = new;
636 29b5c214 2019-02-04 stsp * We must de-duplicate entries on insert because packed-refs may
637 29b5c214 2019-02-04 stsp * contain redundant entries. On-disk refs take precedence.
638 29b5c214 2019-02-04 stsp * This code assumes that on-disk revs are read before packed-refs.
639 e397b6db 2019-02-04 stsp * We're iterating the list anyway, so insert elements sorted by name.
641 7a3c76f5 2019-02-05 stsp re = SIMPLEQ_FIRST(refs);
642 7a3c76f5 2019-02-05 stsp while (re) {
643 7a3c76f5 2019-02-05 stsp cmp = got_path_cmp(got_ref_get_name(re->ref),
644 27a1ed03 2019-03-15 stsp got_ref_get_name(new->ref));
645 e397b6db 2019-02-04 stsp if (cmp == 0) {
646 27a1ed03 2019-03-15 stsp /* duplicate */
647 27a1ed03 2019-03-15 stsp free(new->id);
649 505287be 2019-03-15 stsp *newp = NULL;
650 7a3c76f5 2019-02-05 stsp return NULL;
651 7a3c76f5 2019-02-05 stsp } else if (cmp > 0) {
653 7a3c76f5 2019-02-05 stsp SIMPLEQ_INSERT_AFTER(refs, prev, new, entry);
655 7a3c76f5 2019-02-05 stsp SIMPLEQ_INSERT_HEAD(refs, new, entry);
656 7a3c76f5 2019-02-05 stsp return NULL;
659 7a3c76f5 2019-02-05 stsp re = SIMPLEQ_NEXT(re, entry);
663 7a3c76f5 2019-02-05 stsp SIMPLEQ_INSERT_TAIL(refs, new, entry);
664 199a4027 2019-02-02 stsp return NULL;
667 a04f49d2 2019-02-04 stsp static const struct got_error *
668 29b5c214 2019-02-04 stsp gather_on_disk_refs(struct got_reflist_head *refs, const char *path_refs,
669 a04f49d2 2019-02-04 stsp const char *subdir, struct got_repository *repo)
671 a04f49d2 2019-02-04 stsp const struct got_error *err = NULL;
672 a04f49d2 2019-02-04 stsp DIR *d = NULL;
673 a04f49d2 2019-02-04 stsp char *path_subdir;
675 a04f49d2 2019-02-04 stsp if (asprintf(&path_subdir, "%s/%s", path_refs, subdir) == -1)
676 638f9024 2019-05-13 stsp return got_error_from_errno("asprintf");
678 a04f49d2 2019-02-04 stsp d = opendir(path_subdir);
679 a04f49d2 2019-02-04 stsp if (d == NULL)
683 a04f49d2 2019-02-04 stsp struct dirent *dent;
684 a04f49d2 2019-02-04 stsp struct got_reference *ref;
685 a04f49d2 2019-02-04 stsp char *child;
687 a04f49d2 2019-02-04 stsp dent = readdir(d);
688 a04f49d2 2019-02-04 stsp if (dent == NULL)
691 a04f49d2 2019-02-04 stsp if (strcmp(dent->d_name, ".") == 0 ||
692 a04f49d2 2019-02-04 stsp strcmp(dent->d_name, "..") == 0)
695 a04f49d2 2019-02-04 stsp switch (dent->d_type) {
696 a04f49d2 2019-02-04 stsp case DT_REG:
697 2f17228e 2019-05-12 stsp err = open_ref(&ref, path_refs, subdir, dent->d_name,
702 505287be 2019-03-15 stsp struct got_reflist_entry *new;
703 505287be 2019-03-15 stsp err = insert_ref(&new, refs, ref, repo);
704 505287be 2019-03-15 stsp if (err || new == NULL /* duplicate */)
705 505287be 2019-03-15 stsp got_ref_close(ref);
710 a04f49d2 2019-02-04 stsp case DT_DIR:
711 a04f49d2 2019-02-04 stsp if (asprintf(&child, "%s%s%s", subdir,
712 a04f49d2 2019-02-04 stsp subdir[0] == '\0' ? "" : "/", dent->d_name) == -1) {
713 638f9024 2019-05-13 stsp err = got_error_from_errno("asprintf");
716 29b5c214 2019-02-04 stsp err = gather_on_disk_refs(refs, path_refs, child, repo);
717 a04f49d2 2019-02-04 stsp free(child);
725 a04f49d2 2019-02-04 stsp closedir(d);
726 a04f49d2 2019-02-04 stsp free(path_subdir);
727 a04f49d2 2019-02-04 stsp return err;
730 199a4027 2019-02-02 stsp const struct got_error *
731 199a4027 2019-02-02 stsp got_ref_list(struct got_reflist_head *refs, struct got_repository *repo)
733 199a4027 2019-02-02 stsp const struct got_error *err;
734 a04f49d2 2019-02-04 stsp char *packed_refs_path, *path_refs = NULL;
735 29b5c214 2019-02-04 stsp FILE *f = NULL;
736 199a4027 2019-02-02 stsp struct got_reference *ref;
737 505287be 2019-03-15 stsp struct got_reflist_entry *new;
739 29b5c214 2019-02-04 stsp /* HEAD ref should always exist. */
740 29b5c214 2019-02-04 stsp path_refs = get_refs_dir_path(repo, GOT_REF_HEAD);
741 29b5c214 2019-02-04 stsp if (path_refs == NULL) {
742 638f9024 2019-05-13 stsp err = got_error_from_errno("get_refs_dir_path");
745 2f17228e 2019-05-12 stsp err = open_ref(&ref, path_refs, "", GOT_REF_HEAD, 0);
748 505287be 2019-03-15 stsp err = insert_ref(&new, refs, ref, repo);
749 505287be 2019-03-15 stsp if (err || new == NULL /* duplicate */)
750 505287be 2019-03-15 stsp got_ref_close(ref);
754 29b5c214 2019-02-04 stsp /* Gather on-disk refs before parsing packed-refs. */
755 29b5c214 2019-02-04 stsp free(path_refs);
756 29b5c214 2019-02-04 stsp path_refs = get_refs_dir_path(repo, "");
757 29b5c214 2019-02-04 stsp if (path_refs == NULL) {
758 638f9024 2019-05-13 stsp err = got_error_from_errno("get_refs_dir_path");
761 29b5c214 2019-02-04 stsp err = gather_on_disk_refs(refs, path_refs, "", repo);
766 29b5c214 2019-02-04 stsp * The packed-refs file may contain redundant entries, in which
767 29b5c214 2019-02-04 stsp * case on-disk refs take precedence.
769 199a4027 2019-02-02 stsp packed_refs_path = got_repo_get_path_packed_refs(repo);
770 29b5c214 2019-02-04 stsp if (packed_refs_path == NULL) {
771 638f9024 2019-05-13 stsp err = got_error_from_errno("got_repo_get_path_packed_refs");
775 199a4027 2019-02-02 stsp f = fopen(packed_refs_path, "r");
776 199a4027 2019-02-02 stsp free(packed_refs_path);
778 199a4027 2019-02-02 stsp char *line;
779 199a4027 2019-02-02 stsp size_t len;
780 199a4027 2019-02-02 stsp const char delim[3] = {'\0', '\0', '\0'};
782 199a4027 2019-02-02 stsp line = fparseln(f, &len, NULL, delim, 0);
783 0bb4abae 2019-03-15 stsp if (line == NULL) {
784 0bb4abae 2019-03-15 stsp if (feof(f))
786 0bb4abae 2019-03-15 stsp err = got_ferror(f, GOT_ERR_BAD_REF_DATA);
789 199a4027 2019-02-02 stsp err = parse_packed_ref_line(&ref, NULL, line);
790 0bb4abae 2019-03-15 stsp free(line);
794 505287be 2019-03-15 stsp err = insert_ref(&new, refs, ref, repo);
795 505287be 2019-03-15 stsp if (err || new == NULL /* duplicate */)
796 505287be 2019-03-15 stsp got_ref_close(ref);
803 a04f49d2 2019-02-04 stsp free(path_refs);
804 fb43ecf1 2019-02-11 stsp if (f && fclose(f) != 0 && err == NULL)
805 638f9024 2019-05-13 stsp err = got_error_from_errno("fclose");
806 199a4027 2019-02-02 stsp return err;
810 e2e879a0 2019-03-11 stsp got_ref_list_free(struct got_reflist_head *refs)
812 e2e879a0 2019-03-11 stsp struct got_reflist_entry *re;
814 e2e879a0 2019-03-11 stsp while (!SIMPLEQ_EMPTY(refs)) {
815 e2e879a0 2019-03-11 stsp re = SIMPLEQ_FIRST(refs);
816 e2e879a0 2019-03-11 stsp SIMPLEQ_REMOVE_HEAD(refs, entry);
817 e2e879a0 2019-03-11 stsp got_ref_close(re->ref);
818 e2e879a0 2019-03-11 stsp free(re->id);
825 b249b824 2019-05-09 stsp got_ref_is_symbolic(struct got_reference *ref)
827 b249b824 2019-05-09 stsp return (ref->flags & GOT_REF_IS_SYMBOLIC);
830 b249b824 2019-05-09 stsp const struct got_error *
831 b249b824 2019-05-09 stsp got_ref_change_ref(struct got_reference *ref, struct got_object_id *id)
833 b249b824 2019-05-09 stsp if (ref->flags & GOT_REF_IS_SYMBOLIC)
834 b249b824 2019-05-09 stsp return got_error(GOT_ERR_BAD_REF_TYPE);
836 b249b824 2019-05-09 stsp memcpy(ref->ref.ref.sha1, id->sha1, sizeof(ref->ref.ref.sha1));
837 b249b824 2019-05-09 stsp return NULL;
840 9e672c74 2019-03-11 stsp const struct got_error *
841 b249b824 2019-05-09 stsp got_ref_change_symref(struct got_reference *ref, char *refname)
843 b249b824 2019-05-09 stsp char *new_name;
845 b249b824 2019-05-09 stsp if ((ref->flags & GOT_REF_IS_SYMBOLIC) == 0)
846 b249b824 2019-05-09 stsp return got_error(GOT_ERR_BAD_REF_TYPE);
848 b249b824 2019-05-09 stsp new_name = strdup(refname);
849 b249b824 2019-05-09 stsp if (new_name == NULL)
850 638f9024 2019-05-13 stsp return got_error_from_errno("strdup");
852 b249b824 2019-05-09 stsp free(ref->ref.symref.name);
853 b249b824 2019-05-09 stsp ref->ref.symref.name = new_name;
854 b249b824 2019-05-09 stsp return NULL;
857 b249b824 2019-05-09 stsp const struct got_error *
858 9e672c74 2019-03-11 stsp got_ref_write(struct got_reference *ref, struct got_repository *repo)
860 9e672c74 2019-03-11 stsp const struct got_error *err = NULL, *unlock_err = NULL;
861 9e672c74 2019-03-11 stsp const char *name = got_ref_get_name(ref);
862 9e672c74 2019-03-11 stsp char *path_refs = NULL, *path = NULL, *tmppath = NULL;
863 9e672c74 2019-03-11 stsp struct got_lockfile *lf = NULL;
864 9e672c74 2019-03-11 stsp FILE *f = NULL;
866 9e672c74 2019-03-11 stsp struct stat sb;
868 9e672c74 2019-03-11 stsp path_refs = get_refs_dir_path(repo, name);
869 9e672c74 2019-03-11 stsp if (path_refs == NULL) {
870 638f9024 2019-05-13 stsp err = got_error_from_errno2("get_refs_dir_path", name);
874 9e672c74 2019-03-11 stsp if (asprintf(&path, "%s/%s", path_refs, name) == -1) {
875 638f9024 2019-05-13 stsp err = got_error_from_errno("asprintf");
879 9e672c74 2019-03-11 stsp err = got_opentemp_named(&tmppath, &f, path);
881 d1667f0d 2019-03-11 stsp char *parent;
882 49c7094f 2019-03-11 stsp if (!(err->code == GOT_ERR_ERRNO && errno == ENOENT))
884 d1667f0d 2019-03-11 stsp err = got_path_dirname(&parent, path);
887 0cd1c46a 2019-03-11 stsp err = got_path_mkdir(parent);
888 5e1c9f23 2019-03-11 stsp free(parent);
891 0cd1c46a 2019-03-11 stsp err = got_opentemp_named(&tmppath, &f, path);
896 9e672c74 2019-03-11 stsp if (ref->flags & GOT_REF_IS_SYMBOLIC) {
897 9e672c74 2019-03-11 stsp n = fprintf(f, "ref: %s\n", ref->ref.symref.ref);
898 9e672c74 2019-03-11 stsp if (n != strlen(ref->ref.symref.ref) + 6) {
899 9e672c74 2019-03-11 stsp err = got_ferror(f, GOT_ERR_IO);
903 9e672c74 2019-03-11 stsp char hex[SHA1_DIGEST_STRING_LENGTH];
904 9e672c74 2019-03-11 stsp if (got_sha1_digest_to_str(ref->ref.ref.sha1, hex,
905 9e672c74 2019-03-11 stsp sizeof(hex)) == NULL) {
906 9e672c74 2019-03-11 stsp err = got_error(GOT_ERR_BAD_REF_DATA);
909 9e672c74 2019-03-11 stsp n = fprintf(f, "%s\n", hex);
910 8fa2f096 2019-03-11 stsp if (n != sizeof(hex)) {
911 9e672c74 2019-03-11 stsp err = got_ferror(f, GOT_ERR_IO);
916 2f17228e 2019-05-12 stsp if (ref->lf == NULL) {
917 2f17228e 2019-05-12 stsp err = got_lockfile_lock(&lf, path);
922 9e672c74 2019-03-11 stsp /* XXX: check if old content matches our expectations? */
924 0cd1c46a 2019-03-11 stsp if (stat(path, &sb) != 0) {
925 0cd1c46a 2019-03-11 stsp if (errno != ENOENT) {
926 638f9024 2019-05-13 stsp err = got_error_from_errno2("stat", path);
929 0cd1c46a 2019-03-11 stsp sb.st_mode = GOT_DEFAULT_FILE_MODE;
932 9e672c74 2019-03-11 stsp if (rename(tmppath, path) != 0) {
933 638f9024 2019-05-13 stsp err = got_error_from_errno3("rename", tmppath, path);
936 9e672c74 2019-03-11 stsp free(tmppath);
937 9e672c74 2019-03-11 stsp tmppath = NULL;
939 9e672c74 2019-03-11 stsp if (chmod(path, sb.st_mode) != 0) {
940 638f9024 2019-05-13 stsp err = got_error_from_errno2("chmod", path);
944 2f17228e 2019-05-12 stsp if (ref->lf == NULL && lf)
945 9e672c74 2019-03-11 stsp unlock_err = got_lockfile_unlock(lf);
947 9e672c74 2019-03-11 stsp if (fclose(f) != 0 && err == NULL)
948 638f9024 2019-05-13 stsp err = got_error_from_errno("fclose");
950 9e672c74 2019-03-11 stsp free(path_refs);
951 9e672c74 2019-03-11 stsp free(path);
952 9e672c74 2019-03-11 stsp if (tmppath) {
953 9e672c74 2019-03-11 stsp if (unlink(tmppath) != 0 && err == NULL)
954 638f9024 2019-05-13 stsp err = got_error_from_errno2("unlink", tmppath);
955 9e672c74 2019-03-11 stsp free(tmppath);
957 2d2e1378 2019-03-11 stsp return err ? err : unlock_err;
960 598a8b91 2019-03-15 stsp static const struct got_error *
961 598a8b91 2019-03-15 stsp delete_packed_ref(struct got_reference *delref, struct got_repository *repo)
963 598a8b91 2019-03-15 stsp const struct got_error *err = NULL, *unlock_err = NULL;
964 598a8b91 2019-03-15 stsp struct got_lockfile *lf = NULL;
965 598a8b91 2019-03-15 stsp FILE *f = NULL, *tmpf = NULL;
966 598a8b91 2019-03-15 stsp char *packed_refs_path, *tmppath = NULL;
967 598a8b91 2019-03-15 stsp struct got_reflist_head refs;
968 598a8b91 2019-03-15 stsp int found_delref = 0;
970 598a8b91 2019-03-15 stsp /* The packed-refs file does not cotain symbolic references. */
971 598a8b91 2019-03-15 stsp if (delref->flags & GOT_REF_IS_SYMBOLIC)
972 598a8b91 2019-03-15 stsp return got_error(GOT_ERR_BAD_REF_DATA);
974 598a8b91 2019-03-15 stsp SIMPLEQ_INIT(&refs);
976 598a8b91 2019-03-15 stsp packed_refs_path = got_repo_get_path_packed_refs(repo);
977 598a8b91 2019-03-15 stsp if (packed_refs_path == NULL)
978 638f9024 2019-05-13 stsp return got_error_from_errno("got_repo_get_path_packed_refs");
980 598a8b91 2019-03-15 stsp err = got_opentemp_named(&tmppath, &tmpf, packed_refs_path);
984 2f17228e 2019-05-12 stsp if (delref->lf == NULL) {
985 2f17228e 2019-05-12 stsp err = got_lockfile_lock(&lf, packed_refs_path);
990 598a8b91 2019-03-15 stsp f = fopen(packed_refs_path, "r");
991 598a8b91 2019-03-15 stsp if (f == NULL) {
992 638f9024 2019-05-13 stsp err = got_error_from_errno2("fopen", packed_refs_path);
996 598a8b91 2019-03-15 stsp char *line;
997 598a8b91 2019-03-15 stsp size_t len;
998 598a8b91 2019-03-15 stsp const char delim[3] = {'\0', '\0', '\0'};
999 598a8b91 2019-03-15 stsp struct got_reference *ref;
1000 598a8b91 2019-03-15 stsp struct got_reflist_entry *new;
1002 598a8b91 2019-03-15 stsp line = fparseln(f, &len, NULL, delim, 0);
1003 598a8b91 2019-03-15 stsp if (line == NULL) {
1004 598a8b91 2019-03-15 stsp if (feof(f))
1006 598a8b91 2019-03-15 stsp err = got_ferror(f, GOT_ERR_BAD_REF_DATA);
1007 598a8b91 2019-03-15 stsp goto done;
1009 598a8b91 2019-03-15 stsp err = parse_packed_ref_line(&ref, NULL, line);
1010 598a8b91 2019-03-15 stsp free(line);
1012 598a8b91 2019-03-15 stsp goto done;
1013 598a8b91 2019-03-15 stsp if (ref == NULL)
1016 598a8b91 2019-03-15 stsp if (strcmp(ref->ref.ref.name, delref->ref.ref.name) == 0 &&
1017 598a8b91 2019-03-15 stsp memcmp(ref->ref.ref.sha1, delref->ref.ref.sha1,
1018 598a8b91 2019-03-15 stsp sizeof(delref->ref.ref.sha1)) == 0) {
1019 598a8b91 2019-03-15 stsp found_delref = 1;
1020 598a8b91 2019-03-15 stsp got_ref_close(ref);
1024 598a8b91 2019-03-15 stsp err = insert_ref(&new, &refs, ref, repo);
1025 598a8b91 2019-03-15 stsp if (err || new == NULL /* duplicate */)
1026 598a8b91 2019-03-15 stsp got_ref_close(ref);
1028 598a8b91 2019-03-15 stsp goto done;
1031 598a8b91 2019-03-15 stsp if (found_delref) {
1032 598a8b91 2019-03-15 stsp struct got_reflist_entry *re;
1034 598a8b91 2019-03-15 stsp struct stat sb;
1036 598a8b91 2019-03-15 stsp n = fprintf(tmpf, "%s\n", GOT_PACKED_REFS_HEADER);
1037 598a8b91 2019-03-15 stsp if (n != sizeof(GOT_PACKED_REFS_HEADER)) {
1038 598a8b91 2019-03-15 stsp err = got_ferror(f, GOT_ERR_IO);
1039 598a8b91 2019-03-15 stsp goto done;
1042 598a8b91 2019-03-15 stsp SIMPLEQ_FOREACH(re, &refs, entry) {
1043 598a8b91 2019-03-15 stsp uint8_t hex[SHA1_DIGEST_STRING_LENGTH];
1045 598a8b91 2019-03-15 stsp if (got_sha1_digest_to_str(re->ref->ref.ref.sha1, hex,
1046 598a8b91 2019-03-15 stsp sizeof(hex)) == NULL) {
1047 598a8b91 2019-03-15 stsp err = got_error(GOT_ERR_BAD_REF_DATA);
1048 598a8b91 2019-03-15 stsp goto done;
1050 598a8b91 2019-03-15 stsp n = fprintf(tmpf, "%s ", hex);
1051 598a8b91 2019-03-15 stsp if (n != sizeof(hex)) {
1052 598a8b91 2019-03-15 stsp err = got_ferror(f, GOT_ERR_IO);
1053 598a8b91 2019-03-15 stsp goto done;
1055 598a8b91 2019-03-15 stsp n = fprintf(tmpf, "%s\n", re->ref->ref.ref.name);
1056 598a8b91 2019-03-15 stsp if (n != strlen(re->ref->ref.ref.name) + 1) {
1057 598a8b91 2019-03-15 stsp err = got_ferror(f, GOT_ERR_IO);
1058 598a8b91 2019-03-15 stsp goto done;
1062 598a8b91 2019-03-15 stsp if (fflush(tmpf) != 0) {
1063 638f9024 2019-05-13 stsp err = got_error_from_errno("fflush");
1064 598a8b91 2019-03-15 stsp goto done;
1067 598a8b91 2019-03-15 stsp if (stat(packed_refs_path, &sb) != 0) {
1068 598a8b91 2019-03-15 stsp if (errno != ENOENT) {
1069 638f9024 2019-05-13 stsp err = got_error_from_errno2("stat",
1070 230a42bd 2019-05-11 jcs packed_refs_path);
1071 598a8b91 2019-03-15 stsp goto done;
1073 598a8b91 2019-03-15 stsp sb.st_mode = GOT_DEFAULT_FILE_MODE;
1076 598a8b91 2019-03-15 stsp if (rename(tmppath, packed_refs_path) != 0) {
1077 638f9024 2019-05-13 stsp err = got_error_from_errno3("rename", tmppath,
1078 230a42bd 2019-05-11 jcs packed_refs_path);
1079 598a8b91 2019-03-15 stsp goto done;
1082 598a8b91 2019-03-15 stsp if (chmod(packed_refs_path, sb.st_mode) != 0) {
1083 638f9024 2019-05-13 stsp err = got_error_from_errno2("chmod",
1084 230a42bd 2019-05-11 jcs packed_refs_path);
1085 598a8b91 2019-03-15 stsp goto done;
1089 2f17228e 2019-05-12 stsp if (delref->lf == NULL && lf)
1090 598a8b91 2019-03-15 stsp unlock_err = got_lockfile_unlock(lf);
1092 598a8b91 2019-03-15 stsp if (fclose(f) != 0 && err == NULL)
1093 638f9024 2019-05-13 stsp err = got_error_from_errno("fclose");
1095 598a8b91 2019-03-15 stsp if (tmpf) {
1096 598a8b91 2019-03-15 stsp unlink(tmppath);
1097 598a8b91 2019-03-15 stsp if (fclose(tmpf) != 0 && err == NULL)
1098 638f9024 2019-05-13 stsp err = got_error_from_errno("fclose");
1100 598a8b91 2019-03-15 stsp free(tmppath);
1101 598a8b91 2019-03-15 stsp free(packed_refs_path);
1102 598a8b91 2019-03-15 stsp got_ref_list_free(&refs);
1103 598a8b91 2019-03-15 stsp return err ? err : unlock_err;
1106 2d2e1378 2019-03-11 stsp const struct got_error *
1107 2d2e1378 2019-03-11 stsp got_ref_delete(struct got_reference *ref, struct got_repository *repo)
1109 2d2e1378 2019-03-11 stsp const struct got_error *err = NULL, *unlock_err = NULL;
1110 2d2e1378 2019-03-11 stsp const char *name = got_ref_get_name(ref);
1111 2d2e1378 2019-03-11 stsp char *path_refs = NULL, *path = NULL;
1112 2d2e1378 2019-03-11 stsp struct got_lockfile *lf = NULL;
1114 598a8b91 2019-03-15 stsp if (ref->flags & GOT_REF_IS_PACKED)
1115 598a8b91 2019-03-15 stsp return delete_packed_ref(ref, repo);
1117 2d2e1378 2019-03-11 stsp path_refs = get_refs_dir_path(repo, name);
1118 2d2e1378 2019-03-11 stsp if (path_refs == NULL) {
1119 638f9024 2019-05-13 stsp err = got_error_from_errno2("get_refs_dir_path", name);
1120 2d2e1378 2019-03-11 stsp goto done;
1123 2d2e1378 2019-03-11 stsp if (asprintf(&path, "%s/%s", path_refs, name) == -1) {
1124 638f9024 2019-05-13 stsp err = got_error_from_errno("asprintf");
1125 2d2e1378 2019-03-11 stsp goto done;
1128 2f17228e 2019-05-12 stsp if (ref->lf == NULL) {
1129 2f17228e 2019-05-12 stsp err = got_lockfile_lock(&lf, path);
1131 2f17228e 2019-05-12 stsp goto done;
1134 2d2e1378 2019-03-11 stsp /* XXX: check if old content matches our expectations? */
1136 2d2e1378 2019-03-11 stsp if (unlink(path) != 0)
1137 638f9024 2019-05-13 stsp err = got_error_from_errno2("unlink", path);
1139 2f17228e 2019-05-12 stsp if (ref->lf == NULL && lf)
1140 2d2e1378 2019-03-11 stsp unlock_err = got_lockfile_unlock(lf);
1142 2d2e1378 2019-03-11 stsp free(path_refs);
1143 2d2e1378 2019-03-11 stsp free(path);
1144 9e672c74 2019-03-11 stsp return err ? err : unlock_err;
1147 2f17228e 2019-05-12 stsp const struct got_error *
1148 2f17228e 2019-05-12 stsp got_ref_unlock(struct got_reference *ref)
1150 2f17228e 2019-05-12 stsp const struct got_error *err;
1151 2f17228e 2019-05-12 stsp err = got_lockfile_unlock(ref->lf);
1152 2f17228e 2019-05-12 stsp ref->lf = NULL;
1153 2f17228e 2019-05-12 stsp return err;
