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 230a42bd 2019-05-11 jcs return got_error_prefix_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 230a42bd 2019-05-11 jcs err = got_error_prefix_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 230a42bd 2019-05-11 jcs return got_error_prefix_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 230a42bd 2019-05-11 jcs err = got_error_prefix_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 230a42bd 2019-05-11 jcs err = got_error_prefix_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 5261c201 2018-04-01 stsp if (f == NULL)
178 1e37702e 2019-02-04 stsp return NULL;
180 5261c201 2018-04-01 stsp line = fparseln(f, &len, NULL, delim, 0);
181 5261c201 2018-04-01 stsp if (line == NULL) {
182 30c0868d 2019-02-03 stsp err = got_error(GOT_ERR_BAD_REF_DATA);
186 5261c201 2018-04-01 stsp err = parse_ref_line(ref, name, line);
187 2f17228e 2019-05-12 stsp if (err == NULL && lf)
188 2f17228e 2019-05-12 stsp (*ref)->lf = lf;
190 5261c201 2018-04-01 stsp free(line);
191 2f17228e 2019-05-12 stsp if (fclose(f) != 0 && err == NULL) {
192 230a42bd 2019-05-11 jcs err = got_error_prefix_errno("fclose");
194 2f17228e 2019-05-12 stsp got_lockfile_unlock(lf);
195 2f17228e 2019-05-12 stsp if (*ref) {
196 2f17228e 2019-05-12 stsp got_ref_close(*ref);
197 2f17228e 2019-05-12 stsp *ref = NULL;
200 5261c201 2018-04-01 stsp return err;
204 c5f754cc 2019-02-01 stsp is_well_known_ref(const char *refname)
206 c5f754cc 2019-02-01 stsp return (strcmp(refname, GOT_REF_HEAD) == 0 ||
207 5261c201 2018-04-01 stsp strcmp(refname, GOT_REF_ORIG_HEAD) == 0 ||
208 5261c201 2018-04-01 stsp strcmp(refname, GOT_REF_MERGE_HEAD) == 0 ||
209 c5f754cc 2019-02-01 stsp strcmp(refname, GOT_REF_FETCH_HEAD) == 0);
212 c5f754cc 2019-02-01 stsp static char *
213 c5f754cc 2019-02-01 stsp get_refs_dir_path(struct got_repository *repo, const char *refname)
215 c5f754cc 2019-02-01 stsp if (is_well_known_ref(refname) || strncmp(refname, "refs/", 5) == 0)
216 6e9da951 2019-01-06 stsp return strdup(got_repo_get_path_git_dir(repo));
218 5261c201 2018-04-01 stsp return got_repo_get_path_refs(repo);
222 f77a24b0 2019-03-11 stsp is_valid_ref_name(const char *name)
224 f77a24b0 2019-03-11 stsp const char *s, *slash, *seg;
225 f77a24b0 2019-03-11 stsp const char forbidden[] = { ' ', '~', '^', ':', '?', '*', '[' , '\\' };
226 f77a24b0 2019-03-11 stsp const char *forbidden_seq[] = { "//", "..", "@{" };
227 f77a24b0 2019-03-11 stsp const char *lfs = GOT_LOCKFILE_SUFFIX;
228 f77a24b0 2019-03-11 stsp const size_t lfs_len = sizeof(GOT_LOCKFILE_SUFFIX) - 1;
231 f77a24b0 2019-03-11 stsp if (name[0] == '@' && name[1] == '\0')
234 f77a24b0 2019-03-11 stsp slash = strchr(name, '/');
235 f77a24b0 2019-03-11 stsp if (slash == NULL)
240 f77a24b0 2019-03-11 stsp if (seg[0] == '\0' || seg[0] == '.' || seg[0] == '/')
242 f77a24b0 2019-03-11 stsp while (*s) {
243 f77a24b0 2019-03-11 stsp for (i = 0; i < nitems(forbidden); i++) {
244 f77a24b0 2019-03-11 stsp if (*s == forbidden[i])
247 f77a24b0 2019-03-11 stsp for (i = 0; i < nitems(forbidden_seq); i++) {
248 f77a24b0 2019-03-11 stsp if (s[0] == forbidden_seq[i][0] &&
249 f77a24b0 2019-03-11 stsp s[1] == forbidden_seq[i][1])
252 f77a24b0 2019-03-11 stsp if (iscntrl((unsigned char)s[0]))
254 f77a24b0 2019-03-11 stsp if (s[0] == '.' && s[1] == '\0')
256 f77a24b0 2019-03-11 stsp if (*s == '/') {
257 f77a24b0 2019-03-11 stsp const char *nextseg = s + 1;
258 f77a24b0 2019-03-11 stsp if (nextseg[0] == '\0' || nextseg[0] == '.' ||
259 f77a24b0 2019-03-11 stsp nextseg[0] == '/')
261 f77a24b0 2019-03-11 stsp if (seg <= s - lfs_len &&
262 f77a24b0 2019-03-11 stsp strncmp(s - lfs_len, lfs, lfs_len) == 0)
264 f77a24b0 2019-03-11 stsp seg = nextseg;
269 f77a24b0 2019-03-11 stsp if (seg <= s - lfs_len &&
270 f77a24b0 2019-03-11 stsp strncmp(s - lfs_len, lfs, lfs_len) == 0)
276 5892cdd6 2019-03-10 stsp const struct got_error *
277 5892cdd6 2019-03-10 stsp got_ref_alloc(struct got_reference **ref, const char *name,
278 5892cdd6 2019-03-10 stsp struct got_object_id *id)
280 f77a24b0 2019-03-11 stsp if (!is_valid_ref_name(name))
281 f77a24b0 2019-03-11 stsp return got_error(GOT_ERR_BAD_REF_NAME);
283 f9267c9a 2019-03-15 stsp return alloc_ref(ref, name, id, 0);
286 d1f2edc9 2018-06-13 stsp static const struct got_error *
287 fb79db15 2019-02-01 stsp parse_packed_ref_line(struct got_reference **ref, const char *abs_refname,
288 fb79db15 2019-02-01 stsp const char *line)
290 5892cdd6 2019-03-10 stsp struct got_object_id id;
291 5892cdd6 2019-03-10 stsp const char *name;
293 fb79db15 2019-02-01 stsp *ref = NULL;
295 532920c8 2019-02-01 stsp if (line[0] == '#' || line[0] == '^')
296 fb79db15 2019-02-01 stsp return NULL;
298 5892cdd6 2019-03-10 stsp if (!got_parse_sha1_digest(id.sha1, line))
299 30c0868d 2019-02-03 stsp return got_error(GOT_ERR_BAD_REF_DATA);
301 199a4027 2019-02-02 stsp if (abs_refname) {
302 199a4027 2019-02-02 stsp if (strcmp(line + SHA1_DIGEST_STRING_LENGTH, abs_refname) != 0)
303 199a4027 2019-02-02 stsp return NULL;
304 5892cdd6 2019-03-10 stsp name = abs_refname;
306 5892cdd6 2019-03-10 stsp name = line + SHA1_DIGEST_STRING_LENGTH;
308 f9267c9a 2019-03-15 stsp return alloc_ref(ref, name, &id, GOT_REF_IS_PACKED);
311 fb79db15 2019-02-01 stsp static const struct got_error *
312 0dec1cc0 2019-02-01 stsp open_packed_ref(struct got_reference **ref, FILE *f, const char **subdirs,
313 0dec1cc0 2019-02-01 stsp int nsubdirs, const char *refname)
315 fb79db15 2019-02-01 stsp const struct got_error *err = NULL;
316 fb79db15 2019-02-01 stsp char *abs_refname;
317 fb79db15 2019-02-01 stsp char *line;
318 fb79db15 2019-02-01 stsp size_t len;
319 fb79db15 2019-02-01 stsp const char delim[3] = {'\0', '\0', '\0'};
320 0dec1cc0 2019-02-01 stsp int i, ref_is_absolute = (strncmp(refname, "refs/", 5) == 0);
322 1e37702e 2019-02-04 stsp *ref = NULL;
324 0dec1cc0 2019-02-01 stsp if (ref_is_absolute)
325 0dec1cc0 2019-02-01 stsp abs_refname = (char *)refname;
327 fb79db15 2019-02-01 stsp line = fparseln(f, &len, NULL, delim, 0);
328 7ab0422a 2019-03-15 stsp if (line == NULL) {
329 7ab0422a 2019-03-15 stsp if (feof(f))
331 7ab0422a 2019-03-15 stsp err = got_ferror(f, GOT_ERR_BAD_REF_DATA);
334 0dec1cc0 2019-02-01 stsp for (i = 0; i < nsubdirs; i++) {
335 0dec1cc0 2019-02-01 stsp if (!ref_is_absolute &&
336 0dec1cc0 2019-02-01 stsp asprintf(&abs_refname, "refs/%s/%s", subdirs[i],
337 0dec1cc0 2019-02-01 stsp refname) == -1)
338 230a42bd 2019-05-11 jcs return got_error_prefix_errno("asprintf");
339 0dec1cc0 2019-02-01 stsp err = parse_packed_ref_line(ref, abs_refname, line);
340 0dec1cc0 2019-02-01 stsp if (!ref_is_absolute)
341 0dec1cc0 2019-02-01 stsp free(abs_refname);
342 532920c8 2019-02-01 stsp if (err || *ref != NULL)
345 fb79db15 2019-02-01 stsp free(line);
348 fb79db15 2019-02-01 stsp } while (*ref == NULL);
350 fb79db15 2019-02-01 stsp return err;
353 fb79db15 2019-02-01 stsp static const struct got_error *
354 d1f2edc9 2018-06-13 stsp open_ref(struct got_reference **ref, const char *path_refs, const char *subdir,
355 2f17228e 2019-05-12 stsp const char *name, int lock)
357 d1f2edc9 2018-06-13 stsp const struct got_error *err = NULL;
358 a04f49d2 2019-02-04 stsp char *path = NULL;
359 a04f49d2 2019-02-04 stsp char *normpath = NULL;
360 a04f49d2 2019-02-04 stsp char *absname = NULL;
361 a04f49d2 2019-02-04 stsp int ref_is_absolute = (strncmp(name, "refs/", 5) == 0);
362 a04f49d2 2019-02-04 stsp int ref_is_well_known = is_well_known_ref(name);
364 1e37702e 2019-02-04 stsp *ref = NULL;
366 a04f49d2 2019-02-04 stsp if (ref_is_absolute || ref_is_well_known) {
367 a04f49d2 2019-02-04 stsp if (asprintf(&path, "%s/%s", path_refs, name) == -1)
368 230a42bd 2019-05-11 jcs return got_error_prefix_errno("asprintf");
369 a04f49d2 2019-02-04 stsp absname = (char *)name;
371 58908ed0 2019-03-11 stsp if (asprintf(&path, "%s/%s%s%s", path_refs, subdir,
372 58908ed0 2019-03-11 stsp subdir[0] ? "/" : "", name) == -1)
373 230a42bd 2019-05-11 jcs return got_error_prefix_errno("asprintf");
375 58908ed0 2019-03-11 stsp if (asprintf(&absname, "refs/%s%s%s",
376 58908ed0 2019-03-11 stsp subdir, subdir[0] ? "/" : "", name) == -1) {
377 230a42bd 2019-05-11 jcs err = got_error_prefix_errno("asprintf");
382 a04f49d2 2019-02-04 stsp normpath = got_path_normalize(path);
383 d1f2edc9 2018-06-13 stsp if (normpath == NULL) {
384 230a42bd 2019-05-11 jcs err = got_error_prefix_errno2("got_path_normalize", path);
388 2f17228e 2019-05-12 stsp err = parse_ref_file(ref, absname, normpath, lock);
390 a04f49d2 2019-02-04 stsp if (!ref_is_absolute && !ref_is_well_known)
391 a04f49d2 2019-02-04 stsp free(absname);
392 a04f49d2 2019-02-04 stsp free(path);
393 d1f2edc9 2018-06-13 stsp free(normpath);
394 d1f2edc9 2018-06-13 stsp return err;
397 5261c201 2018-04-01 stsp const struct got_error *
398 5261c201 2018-04-01 stsp got_ref_open(struct got_reference **ref, struct got_repository *repo,
399 2f17228e 2019-05-12 stsp const char *refname, int lock)
401 5261c201 2018-04-01 stsp const struct got_error *err = NULL;
402 c5f754cc 2019-02-01 stsp char *path_refs = NULL;
403 fb79db15 2019-02-01 stsp const char *subdirs[] = {
404 fb79db15 2019-02-01 stsp GOT_REF_HEADS, GOT_REF_TAGS, GOT_REF_REMOTES
406 c5f754cc 2019-02-01 stsp int i, well_known = is_well_known_ref(refname);
408 1e37702e 2019-02-04 stsp *ref = NULL;
410 e135804e 2019-02-10 stsp path_refs = get_refs_dir_path(repo, refname);
411 e135804e 2019-02-10 stsp if (path_refs == NULL) {
412 230a42bd 2019-05-11 jcs err = got_error_prefix_errno2("get_refs_dir_path", refname);
416 0885ce8f 2019-05-12 stsp if (well_known) {
417 0885ce8f 2019-05-12 stsp err = open_ref(ref, path_refs, "", refname, lock);
419 c5f754cc 2019-02-01 stsp char *packed_refs_path;
422 e135804e 2019-02-10 stsp /* Search on-disk refs before packed refs! */
423 e135804e 2019-02-10 stsp for (i = 0; i < nitems(subdirs); i++) {
424 2f17228e 2019-05-12 stsp err = open_ref(ref, path_refs, subdirs[i], refname,
426 e135804e 2019-02-10 stsp if (err || *ref)
430 c5f754cc 2019-02-01 stsp packed_refs_path = got_repo_get_path_packed_refs(repo);
431 e135804e 2019-02-10 stsp if (packed_refs_path == NULL) {
432 230a42bd 2019-05-11 jcs err = got_error_prefix_errno(
433 230a42bd 2019-05-11 jcs "got_repo_get_path_packed_refs");
437 2f17228e 2019-05-12 stsp if (lock) {
438 2f17228e 2019-05-12 stsp err = got_lockfile_lock(&(*ref)->lf, packed_refs_path);
442 c5f754cc 2019-02-01 stsp f = fopen(packed_refs_path, "rb");
443 c5f754cc 2019-02-01 stsp free(packed_refs_path);
444 c5f754cc 2019-02-01 stsp if (f != NULL) {
445 0dec1cc0 2019-02-01 stsp err = open_packed_ref(ref, f, subdirs, nitems(subdirs),
447 fb43ecf1 2019-02-11 stsp if (fclose(f) != 0 && err == NULL)
448 230a42bd 2019-05-11 jcs err = got_error_prefix_errno("fclose");
449 1e37702e 2019-02-04 stsp if (err || *ref)
454 5b575c25 2019-05-12 stsp if (!err && *ref == NULL)
455 1e37702e 2019-02-04 stsp err = got_error_not_ref(refname);
456 5261c201 2018-04-01 stsp free(path_refs);
457 5261c201 2018-04-01 stsp return err;
461 5261c201 2018-04-01 stsp got_ref_close(struct got_reference *ref)
463 e09d28b1 2019-03-15 stsp if (ref->flags & GOT_REF_IS_SYMBOLIC) {
464 5261c201 2018-04-01 stsp free(ref->ref.symref.name);
465 e09d28b1 2019-03-15 stsp free(ref->ref.symref.ref);
467 5261c201 2018-04-01 stsp free(ref->ref.ref.name);
471 5261c201 2018-04-01 stsp struct got_reference *
472 5261c201 2018-04-01 stsp got_ref_dup(struct got_reference *ref)
474 5261c201 2018-04-01 stsp struct got_reference *ret;
476 5261c201 2018-04-01 stsp ret = calloc(1, sizeof(*ret));
477 5261c201 2018-04-01 stsp if (ret == NULL)
478 5261c201 2018-04-01 stsp return NULL;
480 5261c201 2018-04-01 stsp ret->flags = ref->flags;
481 5261c201 2018-04-01 stsp if (ref->flags & GOT_REF_IS_SYMBOLIC) {
482 5261c201 2018-04-01 stsp ret->ref.symref.name = strdup(ref->ref.symref.name);
483 5261c201 2018-04-01 stsp if (ret->ref.symref.name == NULL) {
485 5261c201 2018-04-01 stsp return NULL;
487 5261c201 2018-04-01 stsp ret->ref.symref.ref = strdup(ref->ref.symref.ref);
488 5261c201 2018-04-01 stsp if (ret->ref.symref.ref == NULL) {
489 5261c201 2018-04-01 stsp free(ret->ref.symref.name);
491 5261c201 2018-04-01 stsp return NULL;
494 5261c201 2018-04-01 stsp ref->ref.ref.name = strdup(ref->ref.ref.name);
495 5261c201 2018-04-01 stsp if (ref->ref.ref.name == NULL) {
497 5261c201 2018-04-01 stsp return NULL;
499 5261c201 2018-04-01 stsp memcpy(ret->ref.ref.sha1, ref->ref.ref.sha1,
500 80d5fc1f 2019-03-15 stsp sizeof(ret->ref.ref.sha1));
503 5261c201 2018-04-01 stsp return ret;
506 5261c201 2018-04-01 stsp static const struct got_error *
507 5261c201 2018-04-01 stsp resolve_symbolic_ref(struct got_reference **resolved,
508 5261c201 2018-04-01 stsp struct got_repository *repo, struct got_reference *ref)
510 5261c201 2018-04-01 stsp struct got_reference *nextref;
511 5261c201 2018-04-01 stsp const struct got_error *err;
513 2f17228e 2019-05-12 stsp err = got_ref_open(&nextref, repo, ref->ref.symref.ref, 0);
515 5261c201 2018-04-01 stsp return err;
517 5261c201 2018-04-01 stsp if (nextref->flags & GOT_REF_IS_SYMBOLIC)
518 5261c201 2018-04-01 stsp err = resolve_symbolic_ref(resolved, repo, nextref);
520 5261c201 2018-04-01 stsp *resolved = got_ref_dup(nextref);
522 5261c201 2018-04-01 stsp got_ref_close(nextref);
523 5261c201 2018-04-01 stsp return err;
526 5261c201 2018-04-01 stsp const struct got_error *
527 5261c201 2018-04-01 stsp got_ref_resolve(struct got_object_id **id, struct got_repository *repo,
528 5261c201 2018-04-01 stsp struct got_reference *ref)
530 5261c201 2018-04-01 stsp const struct got_error *err;
532 5261c201 2018-04-01 stsp if (ref->flags & GOT_REF_IS_SYMBOLIC) {
533 5261c201 2018-04-01 stsp struct got_reference *resolved = NULL;
534 5261c201 2018-04-01 stsp err = resolve_symbolic_ref(&resolved, repo, ref);
535 5261c201 2018-04-01 stsp if (err == NULL)
536 5261c201 2018-04-01 stsp err = got_ref_resolve(id, repo, resolved);
537 57b6f99a 2019-04-13 stsp if (resolved)
538 57b6f99a 2019-04-13 stsp got_ref_close(resolved);
539 5261c201 2018-04-01 stsp return err;
542 5261c201 2018-04-01 stsp *id = calloc(1, sizeof(**id));
543 5261c201 2018-04-01 stsp if (*id == NULL)
544 230a42bd 2019-05-11 jcs return got_error_prefix_errno("calloc");
545 80d5fc1f 2019-03-15 stsp memcpy((*id)->sha1, ref->ref.ref.sha1, sizeof((*id)->sha1));
546 5261c201 2018-04-01 stsp return NULL;
550 5261c201 2018-04-01 stsp got_ref_to_str(struct got_reference *ref)
554 271d2a38 2018-12-25 stsp if (ref->flags & GOT_REF_IS_SYMBOLIC)
555 271d2a38 2018-12-25 stsp return strdup(ref->ref.symref.ref);
557 271d2a38 2018-12-25 stsp str = malloc(SHA1_DIGEST_STRING_LENGTH);
558 271d2a38 2018-12-25 stsp if (str == NULL)
559 271d2a38 2018-12-25 stsp return NULL;
561 271d2a38 2018-12-25 stsp if (got_sha1_digest_to_str(ref->ref.ref.sha1, str,
562 271d2a38 2018-12-25 stsp SHA1_DIGEST_STRING_LENGTH) == NULL) {
564 271d2a38 2018-12-25 stsp return NULL;
567 5261c201 2018-04-01 stsp return str;
570 0bd18d37 2019-02-01 stsp const char *
571 0bd18d37 2019-02-01 stsp got_ref_get_name(struct got_reference *ref)
573 0bd18d37 2019-02-01 stsp if (ref->flags & GOT_REF_IS_SYMBOLIC)
574 0bd18d37 2019-02-01 stsp return ref->ref.symref.name;
576 0bd18d37 2019-02-01 stsp return ref->ref.ref.name;
579 199a4027 2019-02-02 stsp static const struct got_error *
580 505287be 2019-03-15 stsp insert_ref(struct got_reflist_entry **newp, struct got_reflist_head *refs,
581 505287be 2019-03-15 stsp struct got_reference *ref, struct got_repository *repo)
583 199a4027 2019-02-02 stsp const struct got_error *err;
584 199a4027 2019-02-02 stsp struct got_object_id *id;
585 6249107b 2019-03-15 stsp struct got_reflist_entry *new, *re, *prev = NULL;
588 505287be 2019-03-15 stsp *newp = NULL;
590 7a3c76f5 2019-02-05 stsp err = got_ref_resolve(&id, repo, ref);
592 7a3c76f5 2019-02-05 stsp return err;
594 6fdbf7b0 2019-03-15 stsp new = malloc(sizeof(*new));
595 7a3c76f5 2019-02-05 stsp if (new == NULL) {
597 230a42bd 2019-05-11 jcs return got_error_prefix_errno("malloc");
599 7a3c76f5 2019-02-05 stsp new->ref = ref;
600 7a3c76f5 2019-02-05 stsp new->id = id;
601 505287be 2019-03-15 stsp *newp = new;
604 29b5c214 2019-02-04 stsp * We must de-duplicate entries on insert because packed-refs may
605 29b5c214 2019-02-04 stsp * contain redundant entries. On-disk refs take precedence.
606 29b5c214 2019-02-04 stsp * This code assumes that on-disk revs are read before packed-refs.
607 e397b6db 2019-02-04 stsp * We're iterating the list anyway, so insert elements sorted by name.
609 7a3c76f5 2019-02-05 stsp re = SIMPLEQ_FIRST(refs);
610 7a3c76f5 2019-02-05 stsp while (re) {
611 7a3c76f5 2019-02-05 stsp cmp = got_path_cmp(got_ref_get_name(re->ref),
612 27a1ed03 2019-03-15 stsp got_ref_get_name(new->ref));
613 e397b6db 2019-02-04 stsp if (cmp == 0) {
614 27a1ed03 2019-03-15 stsp /* duplicate */
615 27a1ed03 2019-03-15 stsp free(new->id);
617 505287be 2019-03-15 stsp *newp = NULL;
618 7a3c76f5 2019-02-05 stsp return NULL;
619 7a3c76f5 2019-02-05 stsp } else if (cmp > 0) {
621 7a3c76f5 2019-02-05 stsp SIMPLEQ_INSERT_AFTER(refs, prev, new, entry);
623 7a3c76f5 2019-02-05 stsp SIMPLEQ_INSERT_HEAD(refs, new, entry);
624 7a3c76f5 2019-02-05 stsp return NULL;
627 7a3c76f5 2019-02-05 stsp re = SIMPLEQ_NEXT(re, entry);
631 7a3c76f5 2019-02-05 stsp SIMPLEQ_INSERT_TAIL(refs, new, entry);
632 199a4027 2019-02-02 stsp return NULL;
635 a04f49d2 2019-02-04 stsp static const struct got_error *
636 29b5c214 2019-02-04 stsp gather_on_disk_refs(struct got_reflist_head *refs, const char *path_refs,
637 a04f49d2 2019-02-04 stsp const char *subdir, struct got_repository *repo)
639 a04f49d2 2019-02-04 stsp const struct got_error *err = NULL;
640 a04f49d2 2019-02-04 stsp DIR *d = NULL;
641 a04f49d2 2019-02-04 stsp char *path_subdir;
643 a04f49d2 2019-02-04 stsp if (asprintf(&path_subdir, "%s/%s", path_refs, subdir) == -1)
644 230a42bd 2019-05-11 jcs return got_error_prefix_errno("asprintf");
646 a04f49d2 2019-02-04 stsp d = opendir(path_subdir);
647 a04f49d2 2019-02-04 stsp if (d == NULL)
651 a04f49d2 2019-02-04 stsp struct dirent *dent;
652 a04f49d2 2019-02-04 stsp struct got_reference *ref;
653 a04f49d2 2019-02-04 stsp char *child;
655 a04f49d2 2019-02-04 stsp dent = readdir(d);
656 a04f49d2 2019-02-04 stsp if (dent == NULL)
659 a04f49d2 2019-02-04 stsp if (strcmp(dent->d_name, ".") == 0 ||
660 a04f49d2 2019-02-04 stsp strcmp(dent->d_name, "..") == 0)
663 a04f49d2 2019-02-04 stsp switch (dent->d_type) {
664 a04f49d2 2019-02-04 stsp case DT_REG:
665 2f17228e 2019-05-12 stsp err = open_ref(&ref, path_refs, subdir, dent->d_name,
670 505287be 2019-03-15 stsp struct got_reflist_entry *new;
671 505287be 2019-03-15 stsp err = insert_ref(&new, refs, ref, repo);
672 505287be 2019-03-15 stsp if (err || new == NULL /* duplicate */)
673 505287be 2019-03-15 stsp got_ref_close(ref);
678 a04f49d2 2019-02-04 stsp case DT_DIR:
679 a04f49d2 2019-02-04 stsp if (asprintf(&child, "%s%s%s", subdir,
680 a04f49d2 2019-02-04 stsp subdir[0] == '\0' ? "" : "/", dent->d_name) == -1) {
681 230a42bd 2019-05-11 jcs err = got_error_prefix_errno("asprintf");
684 29b5c214 2019-02-04 stsp err = gather_on_disk_refs(refs, path_refs, child, repo);
685 a04f49d2 2019-02-04 stsp free(child);
693 a04f49d2 2019-02-04 stsp closedir(d);
694 a04f49d2 2019-02-04 stsp free(path_subdir);
695 a04f49d2 2019-02-04 stsp return err;
698 199a4027 2019-02-02 stsp const struct got_error *
699 199a4027 2019-02-02 stsp got_ref_list(struct got_reflist_head *refs, struct got_repository *repo)
701 199a4027 2019-02-02 stsp const struct got_error *err;
702 a04f49d2 2019-02-04 stsp char *packed_refs_path, *path_refs = NULL;
703 29b5c214 2019-02-04 stsp FILE *f = NULL;
704 199a4027 2019-02-02 stsp struct got_reference *ref;
705 505287be 2019-03-15 stsp struct got_reflist_entry *new;
707 29b5c214 2019-02-04 stsp /* HEAD ref should always exist. */
708 29b5c214 2019-02-04 stsp path_refs = get_refs_dir_path(repo, GOT_REF_HEAD);
709 29b5c214 2019-02-04 stsp if (path_refs == NULL) {
710 230a42bd 2019-05-11 jcs err = got_error_prefix_errno("get_refs_dir_path");
713 2f17228e 2019-05-12 stsp err = open_ref(&ref, path_refs, "", GOT_REF_HEAD, 0);
716 505287be 2019-03-15 stsp err = insert_ref(&new, refs, ref, repo);
717 505287be 2019-03-15 stsp if (err || new == NULL /* duplicate */)
718 505287be 2019-03-15 stsp got_ref_close(ref);
722 29b5c214 2019-02-04 stsp /* Gather on-disk refs before parsing packed-refs. */
723 29b5c214 2019-02-04 stsp free(path_refs);
724 29b5c214 2019-02-04 stsp path_refs = get_refs_dir_path(repo, "");
725 29b5c214 2019-02-04 stsp if (path_refs == NULL) {
726 230a42bd 2019-05-11 jcs err = got_error_prefix_errno("get_refs_dir_path");
729 29b5c214 2019-02-04 stsp err = gather_on_disk_refs(refs, path_refs, "", repo);
734 29b5c214 2019-02-04 stsp * The packed-refs file may contain redundant entries, in which
735 29b5c214 2019-02-04 stsp * case on-disk refs take precedence.
737 199a4027 2019-02-02 stsp packed_refs_path = got_repo_get_path_packed_refs(repo);
738 29b5c214 2019-02-04 stsp if (packed_refs_path == NULL) {
739 230a42bd 2019-05-11 jcs err = got_error_prefix_errno("got_repo_get_path_packed_refs");
743 199a4027 2019-02-02 stsp f = fopen(packed_refs_path, "r");
744 199a4027 2019-02-02 stsp free(packed_refs_path);
746 199a4027 2019-02-02 stsp char *line;
747 199a4027 2019-02-02 stsp size_t len;
748 199a4027 2019-02-02 stsp const char delim[3] = {'\0', '\0', '\0'};
750 199a4027 2019-02-02 stsp line = fparseln(f, &len, NULL, delim, 0);
751 0bb4abae 2019-03-15 stsp if (line == NULL) {
752 0bb4abae 2019-03-15 stsp if (feof(f))
754 0bb4abae 2019-03-15 stsp err = got_ferror(f, GOT_ERR_BAD_REF_DATA);
757 199a4027 2019-02-02 stsp err = parse_packed_ref_line(&ref, NULL, line);
758 0bb4abae 2019-03-15 stsp free(line);
762 505287be 2019-03-15 stsp err = insert_ref(&new, refs, ref, repo);
763 505287be 2019-03-15 stsp if (err || new == NULL /* duplicate */)
764 505287be 2019-03-15 stsp got_ref_close(ref);
771 a04f49d2 2019-02-04 stsp free(path_refs);
772 fb43ecf1 2019-02-11 stsp if (f && fclose(f) != 0 && err == NULL)
773 230a42bd 2019-05-11 jcs err = got_error_prefix_errno("fclose");
774 199a4027 2019-02-02 stsp return err;
778 e2e879a0 2019-03-11 stsp got_ref_list_free(struct got_reflist_head *refs)
780 e2e879a0 2019-03-11 stsp struct got_reflist_entry *re;
782 e2e879a0 2019-03-11 stsp while (!SIMPLEQ_EMPTY(refs)) {
783 e2e879a0 2019-03-11 stsp re = SIMPLEQ_FIRST(refs);
784 e2e879a0 2019-03-11 stsp SIMPLEQ_REMOVE_HEAD(refs, entry);
785 e2e879a0 2019-03-11 stsp got_ref_close(re->ref);
786 e2e879a0 2019-03-11 stsp free(re->id);
793 b249b824 2019-05-09 stsp got_ref_is_symbolic(struct got_reference *ref)
795 b249b824 2019-05-09 stsp return (ref->flags & GOT_REF_IS_SYMBOLIC);
798 b249b824 2019-05-09 stsp const struct got_error *
799 b249b824 2019-05-09 stsp got_ref_change_ref(struct got_reference *ref, struct got_object_id *id)
801 b249b824 2019-05-09 stsp if (ref->flags & GOT_REF_IS_SYMBOLIC)
802 b249b824 2019-05-09 stsp return got_error(GOT_ERR_BAD_REF_TYPE);
804 b249b824 2019-05-09 stsp memcpy(ref->ref.ref.sha1, id->sha1, sizeof(ref->ref.ref.sha1));
805 b249b824 2019-05-09 stsp return NULL;
808 9e672c74 2019-03-11 stsp const struct got_error *
809 b249b824 2019-05-09 stsp got_ref_change_symref(struct got_reference *ref, char *refname)
811 b249b824 2019-05-09 stsp char *new_name;
813 b249b824 2019-05-09 stsp if ((ref->flags & GOT_REF_IS_SYMBOLIC) == 0)
814 b249b824 2019-05-09 stsp return got_error(GOT_ERR_BAD_REF_TYPE);
816 b249b824 2019-05-09 stsp new_name = strdup(refname);
817 b249b824 2019-05-09 stsp if (new_name == NULL)
818 230a42bd 2019-05-11 jcs return got_error_prefix_errno("strdup");
820 b249b824 2019-05-09 stsp free(ref->ref.symref.name);
821 b249b824 2019-05-09 stsp ref->ref.symref.name = new_name;
822 b249b824 2019-05-09 stsp return NULL;
825 b249b824 2019-05-09 stsp const struct got_error *
826 9e672c74 2019-03-11 stsp got_ref_write(struct got_reference *ref, struct got_repository *repo)
828 9e672c74 2019-03-11 stsp const struct got_error *err = NULL, *unlock_err = NULL;
829 9e672c74 2019-03-11 stsp const char *name = got_ref_get_name(ref);
830 9e672c74 2019-03-11 stsp char *path_refs = NULL, *path = NULL, *tmppath = NULL;
831 9e672c74 2019-03-11 stsp struct got_lockfile *lf = NULL;
832 9e672c74 2019-03-11 stsp FILE *f = NULL;
834 9e672c74 2019-03-11 stsp struct stat sb;
836 9e672c74 2019-03-11 stsp path_refs = get_refs_dir_path(repo, name);
837 9e672c74 2019-03-11 stsp if (path_refs == NULL) {
838 230a42bd 2019-05-11 jcs err = got_error_prefix_errno2("get_refs_dir_path", name);
842 9e672c74 2019-03-11 stsp if (asprintf(&path, "%s/%s", path_refs, name) == -1) {
843 230a42bd 2019-05-11 jcs err = got_error_prefix_errno("asprintf");
847 9e672c74 2019-03-11 stsp err = got_opentemp_named(&tmppath, &f, path);
849 d1667f0d 2019-03-11 stsp char *parent;
850 49c7094f 2019-03-11 stsp if (!(err->code == GOT_ERR_ERRNO && errno == ENOENT))
852 d1667f0d 2019-03-11 stsp err = got_path_dirname(&parent, path);
855 0cd1c46a 2019-03-11 stsp err = got_path_mkdir(parent);
856 5e1c9f23 2019-03-11 stsp free(parent);
859 0cd1c46a 2019-03-11 stsp err = got_opentemp_named(&tmppath, &f, path);
864 9e672c74 2019-03-11 stsp if (ref->flags & GOT_REF_IS_SYMBOLIC) {
865 9e672c74 2019-03-11 stsp n = fprintf(f, "ref: %s\n", ref->ref.symref.ref);
866 9e672c74 2019-03-11 stsp if (n != strlen(ref->ref.symref.ref) + 6) {
867 9e672c74 2019-03-11 stsp err = got_ferror(f, GOT_ERR_IO);
871 9e672c74 2019-03-11 stsp char hex[SHA1_DIGEST_STRING_LENGTH];
872 9e672c74 2019-03-11 stsp if (got_sha1_digest_to_str(ref->ref.ref.sha1, hex,
873 9e672c74 2019-03-11 stsp sizeof(hex)) == NULL) {
874 9e672c74 2019-03-11 stsp err = got_error(GOT_ERR_BAD_REF_DATA);
877 9e672c74 2019-03-11 stsp n = fprintf(f, "%s\n", hex);
878 8fa2f096 2019-03-11 stsp if (n != sizeof(hex)) {
879 9e672c74 2019-03-11 stsp err = got_ferror(f, GOT_ERR_IO);
884 2f17228e 2019-05-12 stsp if (ref->lf == NULL) {
885 2f17228e 2019-05-12 stsp err = got_lockfile_lock(&lf, path);
890 9e672c74 2019-03-11 stsp /* XXX: check if old content matches our expectations? */
892 0cd1c46a 2019-03-11 stsp if (stat(path, &sb) != 0) {
893 0cd1c46a 2019-03-11 stsp if (errno != ENOENT) {
894 230a42bd 2019-05-11 jcs err = got_error_prefix_errno2("stat", path);
897 0cd1c46a 2019-03-11 stsp sb.st_mode = GOT_DEFAULT_FILE_MODE;
900 9e672c74 2019-03-11 stsp if (rename(tmppath, path) != 0) {
901 230a42bd 2019-05-11 jcs err = got_error_prefix_errno3("rename", tmppath, path);
904 9e672c74 2019-03-11 stsp free(tmppath);
905 9e672c74 2019-03-11 stsp tmppath = NULL;
907 9e672c74 2019-03-11 stsp if (chmod(path, sb.st_mode) != 0) {
908 230a42bd 2019-05-11 jcs err = got_error_prefix_errno2("chmod", path);
912 2f17228e 2019-05-12 stsp if (ref->lf == NULL && lf)
913 9e672c74 2019-03-11 stsp unlock_err = got_lockfile_unlock(lf);
915 9e672c74 2019-03-11 stsp if (fclose(f) != 0 && err == NULL)
916 230a42bd 2019-05-11 jcs err = got_error_prefix_errno("fclose");
918 9e672c74 2019-03-11 stsp free(path_refs);
919 9e672c74 2019-03-11 stsp free(path);
920 9e672c74 2019-03-11 stsp if (tmppath) {
921 9e672c74 2019-03-11 stsp if (unlink(tmppath) != 0 && err == NULL)
922 230a42bd 2019-05-11 jcs err = got_error_prefix_errno2("unlink", tmppath);
923 9e672c74 2019-03-11 stsp free(tmppath);
925 2d2e1378 2019-03-11 stsp return err ? err : unlock_err;
928 598a8b91 2019-03-15 stsp static const struct got_error *
929 598a8b91 2019-03-15 stsp delete_packed_ref(struct got_reference *delref, struct got_repository *repo)
931 598a8b91 2019-03-15 stsp const struct got_error *err = NULL, *unlock_err = NULL;
932 598a8b91 2019-03-15 stsp struct got_lockfile *lf = NULL;
933 598a8b91 2019-03-15 stsp FILE *f = NULL, *tmpf = NULL;
934 598a8b91 2019-03-15 stsp char *packed_refs_path, *tmppath = NULL;
935 598a8b91 2019-03-15 stsp struct got_reflist_head refs;
936 598a8b91 2019-03-15 stsp int found_delref = 0;
938 598a8b91 2019-03-15 stsp /* The packed-refs file does not cotain symbolic references. */
939 598a8b91 2019-03-15 stsp if (delref->flags & GOT_REF_IS_SYMBOLIC)
940 598a8b91 2019-03-15 stsp return got_error(GOT_ERR_BAD_REF_DATA);
942 598a8b91 2019-03-15 stsp SIMPLEQ_INIT(&refs);
944 598a8b91 2019-03-15 stsp packed_refs_path = got_repo_get_path_packed_refs(repo);
945 598a8b91 2019-03-15 stsp if (packed_refs_path == NULL)
946 230a42bd 2019-05-11 jcs return got_error_prefix_errno("got_repo_get_path_packed_refs");
948 598a8b91 2019-03-15 stsp err = got_opentemp_named(&tmppath, &tmpf, packed_refs_path);
952 2f17228e 2019-05-12 stsp if (delref->lf == NULL) {
953 2f17228e 2019-05-12 stsp err = got_lockfile_lock(&lf, packed_refs_path);
958 598a8b91 2019-03-15 stsp f = fopen(packed_refs_path, "r");
959 598a8b91 2019-03-15 stsp if (f == NULL) {
960 230a42bd 2019-05-11 jcs err = got_error_prefix_errno2("fopen", packed_refs_path);
964 598a8b91 2019-03-15 stsp char *line;
965 598a8b91 2019-03-15 stsp size_t len;
966 598a8b91 2019-03-15 stsp const char delim[3] = {'\0', '\0', '\0'};
967 598a8b91 2019-03-15 stsp struct got_reference *ref;
968 598a8b91 2019-03-15 stsp struct got_reflist_entry *new;
970 598a8b91 2019-03-15 stsp line = fparseln(f, &len, NULL, delim, 0);
971 598a8b91 2019-03-15 stsp if (line == NULL) {
972 598a8b91 2019-03-15 stsp if (feof(f))
974 598a8b91 2019-03-15 stsp err = got_ferror(f, GOT_ERR_BAD_REF_DATA);
977 598a8b91 2019-03-15 stsp err = parse_packed_ref_line(&ref, NULL, line);
978 598a8b91 2019-03-15 stsp free(line);
981 598a8b91 2019-03-15 stsp if (ref == NULL)
984 598a8b91 2019-03-15 stsp if (strcmp(ref->ref.ref.name, delref->ref.ref.name) == 0 &&
985 598a8b91 2019-03-15 stsp memcmp(ref->ref.ref.sha1, delref->ref.ref.sha1,
986 598a8b91 2019-03-15 stsp sizeof(delref->ref.ref.sha1)) == 0) {
987 598a8b91 2019-03-15 stsp found_delref = 1;
988 598a8b91 2019-03-15 stsp got_ref_close(ref);
992 598a8b91 2019-03-15 stsp err = insert_ref(&new, &refs, ref, repo);
993 598a8b91 2019-03-15 stsp if (err || new == NULL /* duplicate */)
994 598a8b91 2019-03-15 stsp got_ref_close(ref);
999 598a8b91 2019-03-15 stsp if (found_delref) {
1000 598a8b91 2019-03-15 stsp struct got_reflist_entry *re;
1002 598a8b91 2019-03-15 stsp struct stat sb;
1004 598a8b91 2019-03-15 stsp n = fprintf(tmpf, "%s\n", GOT_PACKED_REFS_HEADER);
1005 598a8b91 2019-03-15 stsp if (n != sizeof(GOT_PACKED_REFS_HEADER)) {
1006 598a8b91 2019-03-15 stsp err = got_ferror(f, GOT_ERR_IO);
1007 598a8b91 2019-03-15 stsp goto done;
1010 598a8b91 2019-03-15 stsp SIMPLEQ_FOREACH(re, &refs, entry) {
1011 598a8b91 2019-03-15 stsp uint8_t hex[SHA1_DIGEST_STRING_LENGTH];
1013 598a8b91 2019-03-15 stsp if (got_sha1_digest_to_str(re->ref->ref.ref.sha1, hex,
1014 598a8b91 2019-03-15 stsp sizeof(hex)) == NULL) {
1015 598a8b91 2019-03-15 stsp err = got_error(GOT_ERR_BAD_REF_DATA);
1016 598a8b91 2019-03-15 stsp goto done;
1018 598a8b91 2019-03-15 stsp n = fprintf(tmpf, "%s ", hex);
1019 598a8b91 2019-03-15 stsp if (n != sizeof(hex)) {
1020 598a8b91 2019-03-15 stsp err = got_ferror(f, GOT_ERR_IO);
1021 598a8b91 2019-03-15 stsp goto done;
1023 598a8b91 2019-03-15 stsp n = fprintf(tmpf, "%s\n", re->ref->ref.ref.name);
1024 598a8b91 2019-03-15 stsp if (n != strlen(re->ref->ref.ref.name) + 1) {
1025 598a8b91 2019-03-15 stsp err = got_ferror(f, GOT_ERR_IO);
1026 598a8b91 2019-03-15 stsp goto done;
1030 598a8b91 2019-03-15 stsp if (fflush(tmpf) != 0) {
1031 230a42bd 2019-05-11 jcs err = got_error_prefix_errno("fflush");
1032 598a8b91 2019-03-15 stsp goto done;
1035 598a8b91 2019-03-15 stsp if (stat(packed_refs_path, &sb) != 0) {
1036 598a8b91 2019-03-15 stsp if (errno != ENOENT) {
1037 230a42bd 2019-05-11 jcs err = got_error_prefix_errno2("stat",
1038 230a42bd 2019-05-11 jcs packed_refs_path);
1039 598a8b91 2019-03-15 stsp goto done;
1041 598a8b91 2019-03-15 stsp sb.st_mode = GOT_DEFAULT_FILE_MODE;
1044 598a8b91 2019-03-15 stsp if (rename(tmppath, packed_refs_path) != 0) {
1045 230a42bd 2019-05-11 jcs err = got_error_prefix_errno3("rename", tmppath,
1046 230a42bd 2019-05-11 jcs packed_refs_path);
1047 598a8b91 2019-03-15 stsp goto done;
1050 598a8b91 2019-03-15 stsp if (chmod(packed_refs_path, sb.st_mode) != 0) {
1051 230a42bd 2019-05-11 jcs err = got_error_prefix_errno2("chmod",
1052 230a42bd 2019-05-11 jcs packed_refs_path);
1053 598a8b91 2019-03-15 stsp goto done;
1057 2f17228e 2019-05-12 stsp if (delref->lf == NULL && lf)
1058 598a8b91 2019-03-15 stsp unlock_err = got_lockfile_unlock(lf);
1060 598a8b91 2019-03-15 stsp if (fclose(f) != 0 && err == NULL)
1061 230a42bd 2019-05-11 jcs err = got_error_prefix_errno("fclose");
1063 598a8b91 2019-03-15 stsp if (tmpf) {
1064 598a8b91 2019-03-15 stsp unlink(tmppath);
1065 598a8b91 2019-03-15 stsp if (fclose(tmpf) != 0 && err == NULL)
1066 230a42bd 2019-05-11 jcs err = got_error_prefix_errno("fclose");
1068 598a8b91 2019-03-15 stsp free(tmppath);
1069 598a8b91 2019-03-15 stsp free(packed_refs_path);
1070 598a8b91 2019-03-15 stsp got_ref_list_free(&refs);
1071 598a8b91 2019-03-15 stsp return err ? err : unlock_err;
1074 2d2e1378 2019-03-11 stsp const struct got_error *
1075 2d2e1378 2019-03-11 stsp got_ref_delete(struct got_reference *ref, struct got_repository *repo)
1077 2d2e1378 2019-03-11 stsp const struct got_error *err = NULL, *unlock_err = NULL;
1078 2d2e1378 2019-03-11 stsp const char *name = got_ref_get_name(ref);
1079 2d2e1378 2019-03-11 stsp char *path_refs = NULL, *path = NULL;
1080 2d2e1378 2019-03-11 stsp struct got_lockfile *lf = NULL;
1082 598a8b91 2019-03-15 stsp if (ref->flags & GOT_REF_IS_PACKED)
1083 598a8b91 2019-03-15 stsp return delete_packed_ref(ref, repo);
1085 2d2e1378 2019-03-11 stsp path_refs = get_refs_dir_path(repo, name);
1086 2d2e1378 2019-03-11 stsp if (path_refs == NULL) {
1087 230a42bd 2019-05-11 jcs err = got_error_prefix_errno2("get_refs_dir_path", name);
1088 2d2e1378 2019-03-11 stsp goto done;
1091 2d2e1378 2019-03-11 stsp if (asprintf(&path, "%s/%s", path_refs, name) == -1) {
1092 230a42bd 2019-05-11 jcs err = got_error_prefix_errno("asprintf");
1093 2d2e1378 2019-03-11 stsp goto done;
1096 2f17228e 2019-05-12 stsp if (ref->lf == NULL) {
1097 2f17228e 2019-05-12 stsp err = got_lockfile_lock(&lf, path);
1099 2f17228e 2019-05-12 stsp goto done;
1102 2d2e1378 2019-03-11 stsp /* XXX: check if old content matches our expectations? */
1104 2d2e1378 2019-03-11 stsp if (unlink(path) != 0)
1105 230a42bd 2019-05-11 jcs err = got_error_prefix_errno2("unlink", path);
1107 2f17228e 2019-05-12 stsp if (ref->lf == NULL && lf)
1108 2d2e1378 2019-03-11 stsp unlock_err = got_lockfile_unlock(lf);
1110 2d2e1378 2019-03-11 stsp free(path_refs);
1111 2d2e1378 2019-03-11 stsp free(path);
1112 9e672c74 2019-03-11 stsp return err ? err : unlock_err;
1115 2f17228e 2019-05-12 stsp const struct got_error *
1116 2f17228e 2019-05-12 stsp got_ref_unlock(struct got_reference *ref)
1118 2f17228e 2019-05-12 stsp const struct got_error *err;
1119 2f17228e 2019-05-12 stsp err = got_lockfile_unlock(ref->lf);
1120 2f17228e 2019-05-12 stsp ref->lf = NULL;
1121 2f17228e 2019-05-12 stsp return err;
