2 5d56da81 2019-01-13 stsp * Copyright (c) 2018, 2019 Stefan Sperling <stsp@openbsd.org>
4 5261c201 2018-04-01 stsp * Permission to use, copy, modify, and distribute this software for any
5 5261c201 2018-04-01 stsp * purpose with or without fee is hereby granted, provided that the above
6 5261c201 2018-04-01 stsp * copyright notice and this permission notice appear in all copies.
8 5261c201 2018-04-01 stsp * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 5261c201 2018-04-01 stsp * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 5261c201 2018-04-01 stsp * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 5261c201 2018-04-01 stsp * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 5261c201 2018-04-01 stsp * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 5261c201 2018-04-01 stsp * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 5261c201 2018-04-01 stsp * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 5261c201 2018-04-01 stsp #include <sys/types.h>
18 5261c201 2018-04-01 stsp #include <sys/queue.h>
19 9e672c74 2019-03-11 stsp #include <sys/stat.h>
21 0fd469ce 2019-03-11 stsp #include <errno.h>
22 f77a24b0 2019-03-11 stsp #include <ctype.h>
23 a04f49d2 2019-02-04 stsp #include <dirent.h>
24 56e0773d 2019-11-28 stsp #include <limits.h>
25 5261c201 2018-04-01 stsp #include <sha1.h>
26 5261c201 2018-04-01 stsp #include <stdio.h>
27 5261c201 2018-04-01 stsp #include <stdlib.h>
28 5261c201 2018-04-01 stsp #include <string.h>
29 81a12da5 2020-09-09 naddy #include <unistd.h>
30 5261c201 2018-04-01 stsp #include <util.h>
31 5261c201 2018-04-01 stsp #include <zlib.h>
32 788c352e 2018-06-16 stsp #include <time.h>
33 0cd1c46a 2019-03-11 stsp #include <libgen.h>
35 5261c201 2018-04-01 stsp #include "got_error.h"
36 5261c201 2018-04-01 stsp #include "got_object.h"
37 5261c201 2018-04-01 stsp #include "got_repository.h"
38 5261c201 2018-04-01 stsp #include "got_reference.h"
39 9e672c74 2019-03-11 stsp #include "got_opentemp.h"
40 324d37e7 2019-05-11 stsp #include "got_path.h"
42 5261c201 2018-04-01 stsp #include "got_lib_sha1.h"
43 5261c201 2018-04-01 stsp #include "got_lib_delta.h"
44 63581804 2018-07-09 stsp #include "got_lib_inflate.h"
45 5261c201 2018-04-01 stsp #include "got_lib_object.h"
46 f77a24b0 2019-03-11 stsp #include "got_lib_lockfile.h"
48 fb79db15 2019-02-01 stsp #ifndef nitems
49 fb79db15 2019-02-01 stsp #define nitems(_a) (sizeof(_a) / sizeof((_a)[0]))
52 d1f2edc9 2018-06-13 stsp #define GOT_REF_HEADS "heads"
53 d1f2edc9 2018-06-13 stsp #define GOT_REF_TAGS "tags"
54 d1f2edc9 2018-06-13 stsp #define GOT_REF_REMOTES "remotes"
57 598a8b91 2019-03-15 stsp * We do not resolve tags yet, and don't yet care about sorting refs either,
58 598a8b91 2019-03-15 stsp * so packed-refs files we write contain a minimal header which disables all
59 598a8b91 2019-03-15 stsp * packed-refs "traits" supported by Git.
61 598a8b91 2019-03-15 stsp #define GOT_PACKED_REFS_HEADER "# pack-refs with:"
63 5261c201 2018-04-01 stsp /* A symbolic reference. */
64 5261c201 2018-04-01 stsp struct got_symref {
69 29e86f7a 2019-08-12 stsp #define GOT_REF_RECURSE_MAX 20
71 5261c201 2018-04-01 stsp /* A non-symbolic reference (there is no better designation). */
72 5261c201 2018-04-01 stsp struct got_ref {
74 5261c201 2018-04-01 stsp u_int8_t sha1[SHA1_DIGEST_LENGTH];
77 5261c201 2018-04-01 stsp /* A reference which points to an arbitrary object. */
78 5261c201 2018-04-01 stsp struct got_reference {
79 5261c201 2018-04-01 stsp unsigned int flags;
80 5261c201 2018-04-01 stsp #define GOT_REF_IS_SYMBOLIC 0x01
81 f9267c9a 2019-03-15 stsp #define GOT_REF_IS_PACKED 0x02
84 5261c201 2018-04-01 stsp struct got_ref ref;
85 5261c201 2018-04-01 stsp struct got_symref symref;
88 2f17228e 2019-05-12 stsp struct got_lockfile *lf;
91 5261c201 2018-04-01 stsp static const struct got_error *
92 f9267c9a 2019-03-15 stsp alloc_ref(struct got_reference **ref, const char *name,
93 f9267c9a 2019-03-15 stsp struct got_object_id *id, int flags)
95 f9267c9a 2019-03-15 stsp const struct got_error *err = NULL;
97 f9267c9a 2019-03-15 stsp *ref = calloc(1, sizeof(**ref));
98 f9267c9a 2019-03-15 stsp if (*ref == NULL)
99 638f9024 2019-05-13 stsp return got_error_from_errno("calloc");
101 80d5fc1f 2019-03-15 stsp memcpy((*ref)->ref.ref.sha1, id->sha1, sizeof((*ref)->ref.ref.sha1));
102 c980e470 2019-03-15 stsp (*ref)->flags = flags;
103 f9267c9a 2019-03-15 stsp (*ref)->ref.ref.name = strdup(name);
104 f9267c9a 2019-03-15 stsp if ((*ref)->ref.ref.name == NULL) {
105 638f9024 2019-05-13 stsp err = got_error_from_errno("strdup");
106 c980e470 2019-03-15 stsp got_ref_close(*ref);
107 f9267c9a 2019-03-15 stsp *ref = NULL;
109 f9267c9a 2019-03-15 stsp return err;
112 f9267c9a 2019-03-15 stsp static const struct got_error *
113 f9267c9a 2019-03-15 stsp alloc_symref(struct got_reference **ref, const char *name,
114 f9267c9a 2019-03-15 stsp const char *target_ref, int flags)
116 f9267c9a 2019-03-15 stsp const struct got_error *err = NULL;
118 5261c201 2018-04-01 stsp *ref = calloc(1, sizeof(**ref));
119 5261c201 2018-04-01 stsp if (*ref == NULL)
120 638f9024 2019-05-13 stsp return got_error_from_errno("calloc");
122 f9267c9a 2019-03-15 stsp (*ref)->flags = GOT_REF_IS_SYMBOLIC | flags;
123 f9267c9a 2019-03-15 stsp (*ref)->ref.symref.name = strdup(name);
124 f9267c9a 2019-03-15 stsp if ((*ref)->ref.symref.name == NULL) {
125 638f9024 2019-05-13 stsp err = got_error_from_errno("strdup");
126 f9267c9a 2019-03-15 stsp got_ref_close(*ref);
127 f9267c9a 2019-03-15 stsp *ref = NULL;
128 cdb8f1fa 2019-08-28 hiltjo return err;
130 f9267c9a 2019-03-15 stsp (*ref)->ref.symref.ref = strdup(target_ref);
131 f9267c9a 2019-03-15 stsp if ((*ref)->ref.symref.ref == NULL) {
132 638f9024 2019-05-13 stsp err = got_error_from_errno("strdup");
133 f9267c9a 2019-03-15 stsp got_ref_close(*ref);
134 f9267c9a 2019-03-15 stsp *ref = NULL;
136 f9267c9a 2019-03-15 stsp return err;
139 5261c201 2018-04-01 stsp static const struct got_error *
140 f9267c9a 2019-03-15 stsp parse_symref(struct got_reference **ref, const char *name, const char *line)
142 f9267c9a 2019-03-15 stsp if (line[0] == '\0')
143 f9267c9a 2019-03-15 stsp return got_error(GOT_ERR_BAD_REF_DATA);
145 f9267c9a 2019-03-15 stsp return alloc_symref(ref, name, line, 0);
148 f9267c9a 2019-03-15 stsp static const struct got_error *
149 5261c201 2018-04-01 stsp parse_ref_line(struct got_reference **ref, const char *name, const char *line)
151 5892cdd6 2019-03-10 stsp struct got_object_id id;
153 5261c201 2018-04-01 stsp if (strncmp(line, "ref: ", 5) == 0) {
155 5261c201 2018-04-01 stsp return parse_symref(ref, name, line);
158 5892cdd6 2019-03-10 stsp if (!got_parse_sha1_digest(id.sha1, line))
159 30c0868d 2019-02-03 stsp return got_error(GOT_ERR_BAD_REF_DATA);
161 f9267c9a 2019-03-15 stsp return alloc_ref(ref, name, &id, 0);
164 5261c201 2018-04-01 stsp static const struct got_error *
165 5261c201 2018-04-01 stsp parse_ref_file(struct got_reference **ref, const char *name,
166 b2070a3f 2020-03-22 stsp const char *absname, const char *abspath, int lock)
168 5261c201 2018-04-01 stsp const struct got_error *err = NULL;
170 c30018ad 2019-10-21 stsp char *line = NULL;
171 c30018ad 2019-10-21 stsp size_t linesize = 0;
172 c30018ad 2019-10-21 stsp ssize_t linelen;
173 2f17228e 2019-05-12 stsp struct got_lockfile *lf = NULL;
175 2f17228e 2019-05-12 stsp if (lock) {
176 2f17228e 2019-05-12 stsp err = got_lockfile_lock(&lf, abspath);
178 9f142382 2020-03-21 stsp if (err->code == GOT_ERR_ERRNO && errno == ENOENT)
179 b2070a3f 2020-03-22 stsp err = got_error_not_ref(name);
180 9f142382 2020-03-21 stsp return err;
184 c0a1c016 2019-03-15 stsp f = fopen(abspath, "rb");
185 f5c58ad1 2019-05-12 stsp if (f == NULL) {
186 b2070a3f 2020-03-22 stsp if (errno != ENOTDIR && errno != ENOENT)
187 b2070a3f 2020-03-22 stsp err = got_error_from_errno2("fopen", abspath);
189 b2070a3f 2020-03-22 stsp err = got_error_not_ref(name);
191 f5c58ad1 2019-05-12 stsp got_lockfile_unlock(lf);
192 b2070a3f 2020-03-22 stsp return err;
195 c30018ad 2019-10-21 stsp linelen = getline(&line, &linesize, f);
196 c30018ad 2019-10-21 stsp if (linelen == -1) {
197 c30018ad 2019-10-21 stsp if (feof(f))
198 c30018ad 2019-10-21 stsp err = NULL; /* ignore empty files (could be locks) */
200 b2070a3f 2020-03-22 stsp if (errno == EISDIR)
201 b2070a3f 2020-03-22 stsp err = got_error(GOT_ERR_NOT_REF);
202 b2070a3f 2020-03-22 stsp else if (ferror(f))
203 b2070a3f 2020-03-22 stsp err = got_ferror(f, GOT_ERR_IO);
205 b2070a3f 2020-03-22 stsp err = got_error_from_errno2("getline", abspath);
208 f5c58ad1 2019-05-12 stsp got_lockfile_unlock(lf);
211 c30018ad 2019-10-21 stsp while (linelen > 0 && line[linelen - 1] == '\n') {
212 c30018ad 2019-10-21 stsp line[linelen - 1] = '\0';
216 b2070a3f 2020-03-22 stsp err = parse_ref_line(ref, absname, line);
217 f5c58ad1 2019-05-12 stsp if (lock) {
219 f5c58ad1 2019-05-12 stsp got_lockfile_unlock(lf);
222 f5c58ad1 2019-05-12 stsp (*ref)->lf = lf;
224 f5c58ad1 2019-05-12 stsp got_lockfile_unlock(lf);
228 5261c201 2018-04-01 stsp free(line);
229 2f17228e 2019-05-12 stsp if (fclose(f) != 0 && err == NULL) {
230 638f9024 2019-05-13 stsp err = got_error_from_errno("fclose");
231 2f17228e 2019-05-12 stsp if (*ref) {
233 f5c58ad1 2019-05-12 stsp got_ref_unlock(*ref);
234 2f17228e 2019-05-12 stsp got_ref_close(*ref);
235 2f17228e 2019-05-12 stsp *ref = NULL;
238 5261c201 2018-04-01 stsp return err;
242 c5f754cc 2019-02-01 stsp is_well_known_ref(const char *refname)
244 c5f754cc 2019-02-01 stsp return (strcmp(refname, GOT_REF_HEAD) == 0 ||
245 5261c201 2018-04-01 stsp strcmp(refname, GOT_REF_ORIG_HEAD) == 0 ||
246 5261c201 2018-04-01 stsp strcmp(refname, GOT_REF_MERGE_HEAD) == 0 ||
247 c5f754cc 2019-02-01 stsp strcmp(refname, GOT_REF_FETCH_HEAD) == 0);
250 c5f754cc 2019-02-01 stsp static char *
251 c5f754cc 2019-02-01 stsp get_refs_dir_path(struct got_repository *repo, const char *refname)
253 c5f754cc 2019-02-01 stsp if (is_well_known_ref(refname) || strncmp(refname, "refs/", 5) == 0)
254 6e9da951 2019-01-06 stsp return strdup(got_repo_get_path_git_dir(repo));
256 5261c201 2018-04-01 stsp return got_repo_get_path_refs(repo);
260 f77a24b0 2019-03-11 stsp is_valid_ref_name(const char *name)
262 7fa81f88 2020-02-21 stsp const char *s, *seg;
263 f77a24b0 2019-03-11 stsp const char forbidden[] = { ' ', '~', '^', ':', '?', '*', '[' , '\\' };
264 f77a24b0 2019-03-11 stsp const char *forbidden_seq[] = { "//", "..", "@{" };
265 f77a24b0 2019-03-11 stsp const char *lfs = GOT_LOCKFILE_SUFFIX;
266 f77a24b0 2019-03-11 stsp const size_t lfs_len = sizeof(GOT_LOCKFILE_SUFFIX) - 1;
269 f77a24b0 2019-03-11 stsp if (name[0] == '@' && name[1] == '\0')
274 f77a24b0 2019-03-11 stsp if (seg[0] == '\0' || seg[0] == '.' || seg[0] == '/')
276 f77a24b0 2019-03-11 stsp while (*s) {
277 f77a24b0 2019-03-11 stsp for (i = 0; i < nitems(forbidden); i++) {
278 f77a24b0 2019-03-11 stsp if (*s == forbidden[i])
281 f77a24b0 2019-03-11 stsp for (i = 0; i < nitems(forbidden_seq); i++) {
282 f77a24b0 2019-03-11 stsp if (s[0] == forbidden_seq[i][0] &&
283 f77a24b0 2019-03-11 stsp s[1] == forbidden_seq[i][1])
286 f77a24b0 2019-03-11 stsp if (iscntrl((unsigned char)s[0]))
288 f77a24b0 2019-03-11 stsp if (s[0] == '.' && s[1] == '\0')
290 f77a24b0 2019-03-11 stsp if (*s == '/') {
291 f77a24b0 2019-03-11 stsp const char *nextseg = s + 1;
292 f77a24b0 2019-03-11 stsp if (nextseg[0] == '\0' || nextseg[0] == '.' ||
293 f77a24b0 2019-03-11 stsp nextseg[0] == '/')
295 f77a24b0 2019-03-11 stsp if (seg <= s - lfs_len &&
296 f77a24b0 2019-03-11 stsp strncmp(s - lfs_len, lfs, lfs_len) == 0)
298 f77a24b0 2019-03-11 stsp seg = nextseg;
303 f77a24b0 2019-03-11 stsp if (seg <= s - lfs_len &&
304 f77a24b0 2019-03-11 stsp strncmp(s - lfs_len, lfs, lfs_len) == 0)
310 5892cdd6 2019-03-10 stsp const struct got_error *
311 5892cdd6 2019-03-10 stsp got_ref_alloc(struct got_reference **ref, const char *name,
312 5892cdd6 2019-03-10 stsp struct got_object_id *id)
314 0f148cb7 2019-05-13 stsp if (!is_valid_ref_name(name))
315 24b5452a 2019-10-09 stsp return got_error_path(name, GOT_ERR_BAD_REF_NAME);
317 0f148cb7 2019-05-13 stsp return alloc_ref(ref, name, id, 0);
320 aaf88317 2019-07-10 stsp const struct got_error *
321 aaf88317 2019-07-10 stsp got_ref_alloc_symref(struct got_reference **ref, const char *name,
322 aaf88317 2019-07-10 stsp struct got_reference *target_ref)
324 aaf88317 2019-07-10 stsp if (!is_valid_ref_name(name))
325 24b5452a 2019-10-09 stsp return got_error_path(name, GOT_ERR_BAD_REF_NAME);
327 aaf88317 2019-07-10 stsp return alloc_symref(ref, name, got_ref_get_name(target_ref), 0);
330 d1f2edc9 2018-06-13 stsp static const struct got_error *
331 fb79db15 2019-02-01 stsp parse_packed_ref_line(struct got_reference **ref, const char *abs_refname,
332 fb79db15 2019-02-01 stsp const char *line)
334 5892cdd6 2019-03-10 stsp struct got_object_id id;
335 5892cdd6 2019-03-10 stsp const char *name;
337 fb79db15 2019-02-01 stsp *ref = NULL;
339 532920c8 2019-02-01 stsp if (line[0] == '#' || line[0] == '^')
340 fb79db15 2019-02-01 stsp return NULL;
342 5892cdd6 2019-03-10 stsp if (!got_parse_sha1_digest(id.sha1, line))
343 30c0868d 2019-02-03 stsp return got_error(GOT_ERR_BAD_REF_DATA);
345 199a4027 2019-02-02 stsp if (abs_refname) {
346 199a4027 2019-02-02 stsp if (strcmp(line + SHA1_DIGEST_STRING_LENGTH, abs_refname) != 0)
347 199a4027 2019-02-02 stsp return NULL;
348 5892cdd6 2019-03-10 stsp name = abs_refname;
350 5892cdd6 2019-03-10 stsp name = line + SHA1_DIGEST_STRING_LENGTH;
352 f9267c9a 2019-03-15 stsp return alloc_ref(ref, name, &id, GOT_REF_IS_PACKED);
355 fb79db15 2019-02-01 stsp static const struct got_error *
356 0dec1cc0 2019-02-01 stsp open_packed_ref(struct got_reference **ref, FILE *f, const char **subdirs,
357 0dec1cc0 2019-02-01 stsp int nsubdirs, const char *refname)
359 fb79db15 2019-02-01 stsp const struct got_error *err = NULL;
360 fb79db15 2019-02-01 stsp char *abs_refname;
361 fb79db15 2019-02-01 stsp char *line;
362 fb79db15 2019-02-01 stsp size_t len;
363 fb79db15 2019-02-01 stsp const char delim[3] = {'\0', '\0', '\0'};
364 0dec1cc0 2019-02-01 stsp int i, ref_is_absolute = (strncmp(refname, "refs/", 5) == 0);
366 1e37702e 2019-02-04 stsp *ref = NULL;
368 0dec1cc0 2019-02-01 stsp if (ref_is_absolute)
369 0dec1cc0 2019-02-01 stsp abs_refname = (char *)refname;
371 fb79db15 2019-02-01 stsp line = fparseln(f, &len, NULL, delim, 0);
372 7ab0422a 2019-03-15 stsp if (line == NULL) {
373 7ab0422a 2019-03-15 stsp if (feof(f))
375 7ab0422a 2019-03-15 stsp err = got_ferror(f, GOT_ERR_BAD_REF_DATA);
378 0dec1cc0 2019-02-01 stsp for (i = 0; i < nsubdirs; i++) {
379 0dec1cc0 2019-02-01 stsp if (!ref_is_absolute &&
380 0dec1cc0 2019-02-01 stsp asprintf(&abs_refname, "refs/%s/%s", subdirs[i],
381 0dec1cc0 2019-02-01 stsp refname) == -1)
382 638f9024 2019-05-13 stsp return got_error_from_errno("asprintf");
383 0dec1cc0 2019-02-01 stsp err = parse_packed_ref_line(ref, abs_refname, line);
384 0dec1cc0 2019-02-01 stsp if (!ref_is_absolute)
385 0dec1cc0 2019-02-01 stsp free(abs_refname);
386 532920c8 2019-02-01 stsp if (err || *ref != NULL)
389 fb79db15 2019-02-01 stsp free(line);
392 fb79db15 2019-02-01 stsp } while (*ref == NULL);
394 fb79db15 2019-02-01 stsp return err;
397 fb79db15 2019-02-01 stsp static const struct got_error *
398 d1f2edc9 2018-06-13 stsp open_ref(struct got_reference **ref, const char *path_refs, const char *subdir,
399 2f17228e 2019-05-12 stsp const char *name, int lock)
401 d1f2edc9 2018-06-13 stsp const struct got_error *err = NULL;
402 a04f49d2 2019-02-04 stsp char *path = NULL;
403 a04f49d2 2019-02-04 stsp char *absname = NULL;
404 a04f49d2 2019-02-04 stsp int ref_is_absolute = (strncmp(name, "refs/", 5) == 0);
405 75236079 2020-03-25 stsp int ref_is_well_known = (subdir[0] == '\0' && is_well_known_ref(name));
407 1e37702e 2019-02-04 stsp *ref = NULL;
409 a04f49d2 2019-02-04 stsp if (ref_is_absolute || ref_is_well_known) {
410 a04f49d2 2019-02-04 stsp if (asprintf(&path, "%s/%s", path_refs, name) == -1)
411 638f9024 2019-05-13 stsp return got_error_from_errno("asprintf");
412 a04f49d2 2019-02-04 stsp absname = (char *)name;
414 58908ed0 2019-03-11 stsp if (asprintf(&path, "%s/%s%s%s", path_refs, subdir,
415 58908ed0 2019-03-11 stsp subdir[0] ? "/" : "", name) == -1)
416 638f9024 2019-05-13 stsp return got_error_from_errno("asprintf");
418 58908ed0 2019-03-11 stsp if (asprintf(&absname, "refs/%s%s%s",
419 58908ed0 2019-03-11 stsp subdir, subdir[0] ? "/" : "", name) == -1) {
420 638f9024 2019-05-13 stsp err = got_error_from_errno("asprintf");
425 b2070a3f 2020-03-22 stsp err = parse_ref_file(ref, name, absname, path, lock);
427 a04f49d2 2019-02-04 stsp if (!ref_is_absolute && !ref_is_well_known)
428 a04f49d2 2019-02-04 stsp free(absname);
429 a04f49d2 2019-02-04 stsp free(path);
430 d1f2edc9 2018-06-13 stsp return err;
433 5261c201 2018-04-01 stsp const struct got_error *
434 5261c201 2018-04-01 stsp got_ref_open(struct got_reference **ref, struct got_repository *repo,
435 2f17228e 2019-05-12 stsp const char *refname, int lock)
437 5261c201 2018-04-01 stsp const struct got_error *err = NULL;
438 c5f754cc 2019-02-01 stsp char *path_refs = NULL;
439 fb79db15 2019-02-01 stsp const char *subdirs[] = {
440 fb79db15 2019-02-01 stsp GOT_REF_HEADS, GOT_REF_TAGS, GOT_REF_REMOTES
442 c5f754cc 2019-02-01 stsp int i, well_known = is_well_known_ref(refname);
443 a875589a 2019-05-12 stsp struct got_lockfile *lf = NULL;
445 1e37702e 2019-02-04 stsp *ref = NULL;
447 e135804e 2019-02-10 stsp path_refs = get_refs_dir_path(repo, refname);
448 e135804e 2019-02-10 stsp if (path_refs == NULL) {
449 638f9024 2019-05-13 stsp err = got_error_from_errno2("get_refs_dir_path", refname);
453 0885ce8f 2019-05-12 stsp if (well_known) {
454 0885ce8f 2019-05-12 stsp err = open_ref(ref, path_refs, "", refname, lock);
456 c5f754cc 2019-02-01 stsp char *packed_refs_path;
459 e135804e 2019-02-10 stsp /* Search on-disk refs before packed refs! */
460 e135804e 2019-02-10 stsp for (i = 0; i < nitems(subdirs); i++) {
461 2f17228e 2019-05-12 stsp err = open_ref(ref, path_refs, subdirs[i], refname,
463 b2070a3f 2020-03-22 stsp if ((err && err->code != GOT_ERR_NOT_REF) || *ref)
467 c5f754cc 2019-02-01 stsp packed_refs_path = got_repo_get_path_packed_refs(repo);
468 e135804e 2019-02-10 stsp if (packed_refs_path == NULL) {
469 638f9024 2019-05-13 stsp err = got_error_from_errno(
470 230a42bd 2019-05-11 jcs "got_repo_get_path_packed_refs");
474 2f17228e 2019-05-12 stsp if (lock) {
475 a875589a 2019-05-12 stsp err = got_lockfile_lock(&lf, packed_refs_path);
479 c5f754cc 2019-02-01 stsp f = fopen(packed_refs_path, "rb");
480 c5f754cc 2019-02-01 stsp free(packed_refs_path);
481 c5f754cc 2019-02-01 stsp if (f != NULL) {
482 0dec1cc0 2019-02-01 stsp err = open_packed_ref(ref, f, subdirs, nitems(subdirs),
484 a875589a 2019-05-12 stsp if (!err) {
485 a875589a 2019-05-12 stsp if (fclose(f) != 0) {
486 638f9024 2019-05-13 stsp err = got_error_from_errno("fclose");
487 a875589a 2019-05-12 stsp got_ref_close(*ref);
488 a875589a 2019-05-12 stsp *ref = NULL;
489 6e472abb 2019-05-13 stsp } else if (*ref)
490 a875589a 2019-05-12 stsp (*ref)->lf = lf;
495 5b575c25 2019-05-12 stsp if (!err && *ref == NULL)
496 1e37702e 2019-02-04 stsp err = got_error_not_ref(refname);
497 a875589a 2019-05-12 stsp if (err && lf)
498 a875589a 2019-05-12 stsp got_lockfile_unlock(lf);
499 5261c201 2018-04-01 stsp free(path_refs);
500 5261c201 2018-04-01 stsp return err;
504 5261c201 2018-04-01 stsp got_ref_close(struct got_reference *ref)
506 e09d28b1 2019-03-15 stsp if (ref->flags & GOT_REF_IS_SYMBOLIC) {
507 5261c201 2018-04-01 stsp free(ref->ref.symref.name);
508 e09d28b1 2019-03-15 stsp free(ref->ref.symref.ref);
510 5261c201 2018-04-01 stsp free(ref->ref.ref.name);
514 5261c201 2018-04-01 stsp struct got_reference *
515 5261c201 2018-04-01 stsp got_ref_dup(struct got_reference *ref)
517 5261c201 2018-04-01 stsp struct got_reference *ret;
519 5261c201 2018-04-01 stsp ret = calloc(1, sizeof(*ret));
520 5261c201 2018-04-01 stsp if (ret == NULL)
521 5261c201 2018-04-01 stsp return NULL;
523 5261c201 2018-04-01 stsp ret->flags = ref->flags;
524 5261c201 2018-04-01 stsp if (ref->flags & GOT_REF_IS_SYMBOLIC) {
525 5261c201 2018-04-01 stsp ret->ref.symref.name = strdup(ref->ref.symref.name);
526 5261c201 2018-04-01 stsp if (ret->ref.symref.name == NULL) {
528 5261c201 2018-04-01 stsp return NULL;
530 5261c201 2018-04-01 stsp ret->ref.symref.ref = strdup(ref->ref.symref.ref);
531 5261c201 2018-04-01 stsp if (ret->ref.symref.ref == NULL) {
532 5261c201 2018-04-01 stsp free(ret->ref.symref.name);
534 5261c201 2018-04-01 stsp return NULL;
537 5261c201 2018-04-01 stsp ref->ref.ref.name = strdup(ref->ref.ref.name);
538 5261c201 2018-04-01 stsp if (ref->ref.ref.name == NULL) {
540 5261c201 2018-04-01 stsp return NULL;
542 5261c201 2018-04-01 stsp memcpy(ret->ref.ref.sha1, ref->ref.ref.sha1,
543 80d5fc1f 2019-03-15 stsp sizeof(ret->ref.ref.sha1));
546 5261c201 2018-04-01 stsp return ret;
549 b8bad2ba 2019-08-23 stsp const struct got_error *
550 b8bad2ba 2019-08-23 stsp got_reflist_entry_dup(struct got_reflist_entry **newp,
551 b8bad2ba 2019-08-23 stsp struct got_reflist_entry *re)
553 b8bad2ba 2019-08-23 stsp const struct got_error *err = NULL;
554 b8bad2ba 2019-08-23 stsp struct got_reflist_entry *new;
556 b8bad2ba 2019-08-23 stsp *newp = NULL;
558 b8bad2ba 2019-08-23 stsp new = malloc(sizeof(*new));
559 b8bad2ba 2019-08-23 stsp if (new == NULL)
560 b8bad2ba 2019-08-23 stsp return got_error_from_errno("malloc");
562 b8bad2ba 2019-08-23 stsp new->ref = got_ref_dup(re->ref);
563 b8bad2ba 2019-08-23 stsp if (new->ref == NULL) {
564 b8bad2ba 2019-08-23 stsp err = got_error_from_errno("got_ref_dup");
566 b8bad2ba 2019-08-23 stsp return err;
569 b8bad2ba 2019-08-23 stsp new->id = got_object_id_dup(re->id);
570 b8bad2ba 2019-08-23 stsp if (new->id == NULL) {
571 b8bad2ba 2019-08-23 stsp err = got_error_from_errno("got_ref_dup");
572 b8bad2ba 2019-08-23 stsp free(new->id);
574 b8bad2ba 2019-08-23 stsp return err;
577 b8bad2ba 2019-08-23 stsp *newp = new;
578 b8bad2ba 2019-08-23 stsp return NULL;
581 5261c201 2018-04-01 stsp static const struct got_error *
582 5261c201 2018-04-01 stsp resolve_symbolic_ref(struct got_reference **resolved,
583 5261c201 2018-04-01 stsp struct got_repository *repo, struct got_reference *ref)
585 5261c201 2018-04-01 stsp struct got_reference *nextref;
586 5261c201 2018-04-01 stsp const struct got_error *err;
588 2f17228e 2019-05-12 stsp err = got_ref_open(&nextref, repo, ref->ref.symref.ref, 0);
590 5261c201 2018-04-01 stsp return err;
592 5261c201 2018-04-01 stsp if (nextref->flags & GOT_REF_IS_SYMBOLIC)
593 5261c201 2018-04-01 stsp err = resolve_symbolic_ref(resolved, repo, nextref);
595 5261c201 2018-04-01 stsp *resolved = got_ref_dup(nextref);
597 5261c201 2018-04-01 stsp got_ref_close(nextref);
598 5261c201 2018-04-01 stsp return err;
601 29e86f7a 2019-08-12 stsp static const struct got_error *
602 29e86f7a 2019-08-12 stsp ref_resolve(struct got_object_id **id, struct got_repository *repo,
603 29e86f7a 2019-08-12 stsp struct got_reference *ref, int recursion)
605 5261c201 2018-04-01 stsp const struct got_error *err;
607 29e86f7a 2019-08-12 stsp if (recursion <= 0)
608 29e86f7a 2019-08-12 stsp return got_error_msg(GOT_ERR_RECURSION,
609 29e86f7a 2019-08-12 stsp "reference recursion limit reached");
611 5261c201 2018-04-01 stsp if (ref->flags & GOT_REF_IS_SYMBOLIC) {
612 5261c201 2018-04-01 stsp struct got_reference *resolved = NULL;
613 5261c201 2018-04-01 stsp err = resolve_symbolic_ref(&resolved, repo, ref);
614 5261c201 2018-04-01 stsp if (err == NULL)
615 29e86f7a 2019-08-12 stsp err = ref_resolve(id, repo, resolved, --recursion);
616 57b6f99a 2019-04-13 stsp if (resolved)
617 57b6f99a 2019-04-13 stsp got_ref_close(resolved);
618 5261c201 2018-04-01 stsp return err;
621 5261c201 2018-04-01 stsp *id = calloc(1, sizeof(**id));
622 5261c201 2018-04-01 stsp if (*id == NULL)
623 638f9024 2019-05-13 stsp return got_error_from_errno("calloc");
624 80d5fc1f 2019-03-15 stsp memcpy((*id)->sha1, ref->ref.ref.sha1, sizeof((*id)->sha1));
625 5261c201 2018-04-01 stsp return NULL;
628 29e86f7a 2019-08-12 stsp const struct got_error *
629 29e86f7a 2019-08-12 stsp got_ref_resolve(struct got_object_id **id, struct got_repository *repo,
630 29e86f7a 2019-08-12 stsp struct got_reference *ref)
632 29e86f7a 2019-08-12 stsp return ref_resolve(id, repo, ref, GOT_REF_RECURSE_MAX);
636 5261c201 2018-04-01 stsp got_ref_to_str(struct got_reference *ref)
640 271d2a38 2018-12-25 stsp if (ref->flags & GOT_REF_IS_SYMBOLIC)
641 271d2a38 2018-12-25 stsp return strdup(ref->ref.symref.ref);
643 271d2a38 2018-12-25 stsp str = malloc(SHA1_DIGEST_STRING_LENGTH);
644 271d2a38 2018-12-25 stsp if (str == NULL)
645 271d2a38 2018-12-25 stsp return NULL;
647 271d2a38 2018-12-25 stsp if (got_sha1_digest_to_str(ref->ref.ref.sha1, str,
648 271d2a38 2018-12-25 stsp SHA1_DIGEST_STRING_LENGTH) == NULL) {
650 271d2a38 2018-12-25 stsp return NULL;
653 5261c201 2018-04-01 stsp return str;
656 0bd18d37 2019-02-01 stsp const char *
657 0bd18d37 2019-02-01 stsp got_ref_get_name(struct got_reference *ref)
659 0bd18d37 2019-02-01 stsp if (ref->flags & GOT_REF_IS_SYMBOLIC)
660 0bd18d37 2019-02-01 stsp return ref->ref.symref.name;
662 0bd18d37 2019-02-01 stsp return ref->ref.ref.name;
665 aaf88317 2019-07-10 stsp const char *
666 aaf88317 2019-07-10 stsp got_ref_get_symref_target(struct got_reference *ref)
668 aaf88317 2019-07-10 stsp if (ref->flags & GOT_REF_IS_SYMBOLIC)
669 aaf88317 2019-07-10 stsp return ref->ref.symref.ref;
671 b8bad2ba 2019-08-23 stsp return NULL;
674 b8bad2ba 2019-08-23 stsp const struct got_error *
675 b8bad2ba 2019-08-23 stsp got_ref_cmp_by_name(void *arg, int *cmp, struct got_reference *re1,
676 b8bad2ba 2019-08-23 stsp struct got_reference* re2)
678 b8bad2ba 2019-08-23 stsp const char *name1 = got_ref_get_name(re1);
679 b8bad2ba 2019-08-23 stsp const char *name2 = got_ref_get_name(re2);
681 b8bad2ba 2019-08-23 stsp *cmp = got_path_cmp(name1, name2, strlen(name1), strlen(name2));
682 aaf88317 2019-07-10 stsp return NULL;
685 d1f16636 2020-01-15 stsp const struct got_error *
686 d1f16636 2020-01-15 stsp got_ref_cmp_tags(void *arg, int *cmp, struct got_reference *ref1,
687 d1f16636 2020-01-15 stsp struct got_reference *ref2)
689 d1f16636 2020-01-15 stsp const struct got_error *err = NULL;
690 d1f16636 2020-01-15 stsp struct got_repository *repo = arg;
691 d1f16636 2020-01-15 stsp struct got_object_id *id1, *id2 = NULL;
692 d1f16636 2020-01-15 stsp struct got_tag_object *tag1 = NULL, *tag2 = NULL;
693 d1f16636 2020-01-15 stsp struct got_commit_object *commit1 = NULL, *commit2 = NULL;
694 d1f16636 2020-01-15 stsp time_t time1, time2;
698 d1f16636 2020-01-15 stsp err = got_ref_resolve(&id1, repo, ref1);
700 d1f16636 2020-01-15 stsp return err;
701 d1f16636 2020-01-15 stsp err = got_object_open_as_tag(&tag1, repo, id1);
703 d1f16636 2020-01-15 stsp if (err->code != GOT_ERR_OBJ_TYPE)
705 d1f16636 2020-01-15 stsp /* "lightweight" tag */
706 d1f16636 2020-01-15 stsp err = got_object_open_as_commit(&commit1, repo, id1);
709 d1f16636 2020-01-15 stsp time1 = got_object_commit_get_committer_time(commit1);
711 d1f16636 2020-01-15 stsp time1 = got_object_tag_get_tagger_time(tag1);
713 d1f16636 2020-01-15 stsp err = got_ref_resolve(&id2, repo, ref2);
716 d1f16636 2020-01-15 stsp err = got_object_open_as_tag(&tag2, repo, id2);
718 d1f16636 2020-01-15 stsp if (err->code != GOT_ERR_OBJ_TYPE)
720 d1f16636 2020-01-15 stsp /* "lightweight" tag */
721 d1f16636 2020-01-15 stsp err = got_object_open_as_commit(&commit2, repo, id2);
724 d1f16636 2020-01-15 stsp time2 = got_object_commit_get_committer_time(commit2);
726 d1f16636 2020-01-15 stsp time2 = got_object_tag_get_tagger_time(tag2);
728 d1f16636 2020-01-15 stsp /* Put latest tags first. */
729 d1f16636 2020-01-15 stsp if (time1 < time2)
731 d1f16636 2020-01-15 stsp else if (time1 > time2)
734 d1f16636 2020-01-15 stsp err = got_ref_cmp_by_name(NULL, cmp, ref2, ref1);
739 d1f16636 2020-01-15 stsp got_object_tag_close(tag1);
741 d1f16636 2020-01-15 stsp got_object_tag_close(tag2);
742 d1f16636 2020-01-15 stsp if (commit1)
743 d1f16636 2020-01-15 stsp got_object_commit_close(commit1);
744 d1f16636 2020-01-15 stsp if (commit2)
745 d1f16636 2020-01-15 stsp got_object_commit_close(commit2);
746 d1f16636 2020-01-15 stsp return err;
749 199a4027 2019-02-02 stsp static const struct got_error *
750 505287be 2019-03-15 stsp insert_ref(struct got_reflist_entry **newp, struct got_reflist_head *refs,
751 b8bad2ba 2019-08-23 stsp struct got_reference *ref, struct got_repository *repo,
752 b8bad2ba 2019-08-23 stsp got_ref_cmp_cb cmp_cb, void *cmp_arg)
754 199a4027 2019-02-02 stsp const struct got_error *err;
755 199a4027 2019-02-02 stsp struct got_object_id *id;
756 6249107b 2019-03-15 stsp struct got_reflist_entry *new, *re, *prev = NULL;
759 505287be 2019-03-15 stsp *newp = NULL;
761 7a3c76f5 2019-02-05 stsp err = got_ref_resolve(&id, repo, ref);
763 7a3c76f5 2019-02-05 stsp return err;
765 6fdbf7b0 2019-03-15 stsp new = malloc(sizeof(*new));
766 7a3c76f5 2019-02-05 stsp if (new == NULL) {
768 638f9024 2019-05-13 stsp return got_error_from_errno("malloc");
770 7a3c76f5 2019-02-05 stsp new->ref = ref;
771 7a3c76f5 2019-02-05 stsp new->id = id;
772 505287be 2019-03-15 stsp *newp = new;
775 29b5c214 2019-02-04 stsp * We must de-duplicate entries on insert because packed-refs may
776 29b5c214 2019-02-04 stsp * contain redundant entries. On-disk refs take precedence.
777 29b5c214 2019-02-04 stsp * This code assumes that on-disk revs are read before packed-refs.
778 e397b6db 2019-02-04 stsp * We're iterating the list anyway, so insert elements sorted by name.
780 7a3c76f5 2019-02-05 stsp re = SIMPLEQ_FIRST(refs);
781 7a3c76f5 2019-02-05 stsp while (re) {
782 b8bad2ba 2019-08-23 stsp err = (*cmp_cb)(cmp_arg, &cmp, re->ref, new->ref);
784 b8bad2ba 2019-08-23 stsp return err;
785 e397b6db 2019-02-04 stsp if (cmp == 0) {
786 27a1ed03 2019-03-15 stsp /* duplicate */
787 27a1ed03 2019-03-15 stsp free(new->id);
789 505287be 2019-03-15 stsp *newp = NULL;
790 7a3c76f5 2019-02-05 stsp return NULL;
791 7a3c76f5 2019-02-05 stsp } else if (cmp > 0) {
793 7a3c76f5 2019-02-05 stsp SIMPLEQ_INSERT_AFTER(refs, prev, new, entry);
795 7a3c76f5 2019-02-05 stsp SIMPLEQ_INSERT_HEAD(refs, new, entry);
796 7a3c76f5 2019-02-05 stsp return NULL;
799 7a3c76f5 2019-02-05 stsp re = SIMPLEQ_NEXT(re, entry);
803 7a3c76f5 2019-02-05 stsp SIMPLEQ_INSERT_TAIL(refs, new, entry);
804 199a4027 2019-02-02 stsp return NULL;
807 a04f49d2 2019-02-04 stsp static const struct got_error *
808 29b5c214 2019-02-04 stsp gather_on_disk_refs(struct got_reflist_head *refs, const char *path_refs,
809 b8bad2ba 2019-08-23 stsp const char *subdir, struct got_repository *repo,
810 b8bad2ba 2019-08-23 stsp got_ref_cmp_cb cmp_cb, void *cmp_arg)
812 a04f49d2 2019-02-04 stsp const struct got_error *err = NULL;
813 a04f49d2 2019-02-04 stsp DIR *d = NULL;
814 a04f49d2 2019-02-04 stsp char *path_subdir;
816 b2070a3f 2020-03-22 stsp while (subdir[0] == '/')
819 a04f49d2 2019-02-04 stsp if (asprintf(&path_subdir, "%s/%s", path_refs, subdir) == -1)
820 638f9024 2019-05-13 stsp return got_error_from_errno("asprintf");
822 a04f49d2 2019-02-04 stsp d = opendir(path_subdir);
823 a04f49d2 2019-02-04 stsp if (d == NULL)
827 a04f49d2 2019-02-04 stsp struct dirent *dent;
828 a04f49d2 2019-02-04 stsp struct got_reference *ref;
829 a04f49d2 2019-02-04 stsp char *child;
832 a04f49d2 2019-02-04 stsp dent = readdir(d);
833 a04f49d2 2019-02-04 stsp if (dent == NULL)
836 a04f49d2 2019-02-04 stsp if (strcmp(dent->d_name, ".") == 0 ||
837 a04f49d2 2019-02-04 stsp strcmp(dent->d_name, "..") == 0)
840 20ccae39 2020-07-21 stsp err = got_path_dirent_type(&type, path_subdir, dent);
844 20ccae39 2020-07-21 stsp switch (type) {
845 a04f49d2 2019-02-04 stsp case DT_REG:
846 2f17228e 2019-05-12 stsp err = open_ref(&ref, path_refs, subdir, dent->d_name,
851 505287be 2019-03-15 stsp struct got_reflist_entry *new;
852 b8bad2ba 2019-08-23 stsp err = insert_ref(&new, refs, ref, repo,
853 b8bad2ba 2019-08-23 stsp cmp_cb, cmp_arg);
854 505287be 2019-03-15 stsp if (err || new == NULL /* duplicate */)
855 505287be 2019-03-15 stsp got_ref_close(ref);
860 a04f49d2 2019-02-04 stsp case DT_DIR:
861 a04f49d2 2019-02-04 stsp if (asprintf(&child, "%s%s%s", subdir,
862 a04f49d2 2019-02-04 stsp subdir[0] == '\0' ? "" : "/", dent->d_name) == -1) {
863 638f9024 2019-05-13 stsp err = got_error_from_errno("asprintf");
866 b8bad2ba 2019-08-23 stsp err = gather_on_disk_refs(refs, path_refs, child, repo,
867 b8bad2ba 2019-08-23 stsp cmp_cb, cmp_arg);
868 a04f49d2 2019-02-04 stsp free(child);
876 a04f49d2 2019-02-04 stsp closedir(d);
877 a04f49d2 2019-02-04 stsp free(path_subdir);
878 a04f49d2 2019-02-04 stsp return err;
881 199a4027 2019-02-02 stsp const struct got_error *
882 29606af7 2019-08-23 stsp got_ref_list(struct got_reflist_head *refs, struct got_repository *repo,
883 b8bad2ba 2019-08-23 stsp const char *ref_namespace, got_ref_cmp_cb cmp_cb, void *cmp_arg)
885 199a4027 2019-02-02 stsp const struct got_error *err;
886 a04f49d2 2019-02-04 stsp char *packed_refs_path, *path_refs = NULL;
887 b2070a3f 2020-03-22 stsp char *abs_namespace = NULL;
888 b2070a3f 2020-03-22 stsp char *buf = NULL, *ondisk_ref_namespace = NULL;
889 29b5c214 2019-02-04 stsp FILE *f = NULL;
890 199a4027 2019-02-02 stsp struct got_reference *ref;
891 505287be 2019-03-15 stsp struct got_reflist_entry *new;
893 29606af7 2019-08-23 stsp if (ref_namespace == NULL || ref_namespace[0] == '\0') {
894 29606af7 2019-08-23 stsp path_refs = get_refs_dir_path(repo, GOT_REF_HEAD);
895 29606af7 2019-08-23 stsp if (path_refs == NULL) {
896 29606af7 2019-08-23 stsp err = got_error_from_errno("get_refs_dir_path");
899 29606af7 2019-08-23 stsp err = open_ref(&ref, path_refs, "", GOT_REF_HEAD, 0);
902 f68a7890 2020-03-19 stsp err = insert_ref(&new, refs, ref, repo,
903 f68a7890 2020-03-19 stsp cmp_cb, cmp_arg);
904 29606af7 2019-08-23 stsp if (err || new == NULL /* duplicate */)
905 29606af7 2019-08-23 stsp got_ref_close(ref);
906 f68a7890 2020-03-19 stsp if (err && err->code != GOT_ERR_NOT_REF)
909 b2070a3f 2020-03-22 stsp /* Try listing a single reference. */
910 b2070a3f 2020-03-22 stsp const char *refname = ref_namespace;
911 b2070a3f 2020-03-22 stsp path_refs = get_refs_dir_path(repo, refname);
912 b2070a3f 2020-03-22 stsp if (path_refs == NULL) {
913 b2070a3f 2020-03-22 stsp err = got_error_from_errno("get_refs_dir_path");
916 b2070a3f 2020-03-22 stsp err = open_ref(&ref, path_refs, "", refname, 0);
918 b2070a3f 2020-03-22 stsp if (err->code != GOT_ERR_NOT_REF)
920 b2070a3f 2020-03-22 stsp /* Try to look up references in a given namespace. */
922 b2070a3f 2020-03-22 stsp err = insert_ref(&new, refs, ref, repo,
923 b2070a3f 2020-03-22 stsp cmp_cb, cmp_arg);
924 b2070a3f 2020-03-22 stsp if (err || new == NULL /* duplicate */)
925 b2070a3f 2020-03-22 stsp got_ref_close(ref);
926 b2070a3f 2020-03-22 stsp return err;
930 b2070a3f 2020-03-22 stsp if (ref_namespace) {
931 b2070a3f 2020-03-22 stsp size_t len;
932 b2070a3f 2020-03-22 stsp /* Canonicalize the path to eliminate double-slashes if any. */
933 b2070a3f 2020-03-22 stsp if (asprintf(&abs_namespace, "/%s", ref_namespace) == -1) {
934 b2070a3f 2020-03-22 stsp err = got_error_from_errno("asprintf");
937 b2070a3f 2020-03-22 stsp len = strlen(abs_namespace) + 1;
938 b2070a3f 2020-03-22 stsp buf = malloc(len);
939 b2070a3f 2020-03-22 stsp if (buf == NULL) {
940 b2070a3f 2020-03-22 stsp err = got_error_from_errno("malloc");
943 b2070a3f 2020-03-22 stsp err = got_canonpath(abs_namespace, buf, len);
946 b2070a3f 2020-03-22 stsp ondisk_ref_namespace = buf;
947 b2070a3f 2020-03-22 stsp while (ondisk_ref_namespace[0] == '/')
948 b2070a3f 2020-03-22 stsp ondisk_ref_namespace++;
949 b2070a3f 2020-03-22 stsp if (strncmp(ondisk_ref_namespace, "refs/", 5) == 0)
950 b2070a3f 2020-03-22 stsp ondisk_ref_namespace += 5;
951 b2070a3f 2020-03-22 stsp else if (strcmp(ondisk_ref_namespace, "refs") == 0)
952 b2070a3f 2020-03-22 stsp ondisk_ref_namespace = "";
955 29b5c214 2019-02-04 stsp /* Gather on-disk refs before parsing packed-refs. */
956 29b5c214 2019-02-04 stsp free(path_refs);
957 29b5c214 2019-02-04 stsp path_refs = get_refs_dir_path(repo, "");
958 29b5c214 2019-02-04 stsp if (path_refs == NULL) {
959 638f9024 2019-05-13 stsp err = got_error_from_errno("get_refs_dir_path");
962 29606af7 2019-08-23 stsp err = gather_on_disk_refs(refs, path_refs,
963 6aeab596 2019-08-28 stsp ondisk_ref_namespace ? ondisk_ref_namespace : "", repo,
964 6aeab596 2019-08-28 stsp cmp_cb, cmp_arg);
969 29b5c214 2019-02-04 stsp * The packed-refs file may contain redundant entries, in which
970 29b5c214 2019-02-04 stsp * case on-disk refs take precedence.
972 199a4027 2019-02-02 stsp packed_refs_path = got_repo_get_path_packed_refs(repo);
973 29b5c214 2019-02-04 stsp if (packed_refs_path == NULL) {
974 638f9024 2019-05-13 stsp err = got_error_from_errno("got_repo_get_path_packed_refs");
978 199a4027 2019-02-02 stsp f = fopen(packed_refs_path, "r");
979 199a4027 2019-02-02 stsp free(packed_refs_path);
981 199a4027 2019-02-02 stsp char *line;
982 199a4027 2019-02-02 stsp size_t len;
983 199a4027 2019-02-02 stsp const char delim[3] = {'\0', '\0', '\0'};
985 199a4027 2019-02-02 stsp line = fparseln(f, &len, NULL, delim, 0);
986 0bb4abae 2019-03-15 stsp if (line == NULL) {
987 0bb4abae 2019-03-15 stsp if (feof(f))
989 0bb4abae 2019-03-15 stsp err = got_ferror(f, GOT_ERR_BAD_REF_DATA);
992 199a4027 2019-02-02 stsp err = parse_packed_ref_line(&ref, NULL, line);
993 0bb4abae 2019-03-15 stsp free(line);
997 29606af7 2019-08-23 stsp if (ref_namespace) {
998 29606af7 2019-08-23 stsp const char *name;
999 29606af7 2019-08-23 stsp name = got_ref_get_name(ref);
1000 b2070a3f 2020-03-22 stsp if (!got_path_is_child(name,
1001 b2070a3f 2020-03-22 stsp ref_namespace,
1002 b2070a3f 2020-03-22 stsp strlen(ref_namespace))) {
1003 29606af7 2019-08-23 stsp got_ref_close(ref);
1007 b8bad2ba 2019-08-23 stsp err = insert_ref(&new, refs, ref, repo,
1008 b8bad2ba 2019-08-23 stsp cmp_cb, cmp_arg);
1009 505287be 2019-03-15 stsp if (err || new == NULL /* duplicate */)
1010 505287be 2019-03-15 stsp got_ref_close(ref);
1012 76b4ead2 2019-02-03 stsp goto done;
1017 b2070a3f 2020-03-22 stsp free(abs_namespace);
1018 b2070a3f 2020-03-22 stsp free(buf);
1019 a04f49d2 2019-02-04 stsp free(path_refs);
1020 fb43ecf1 2019-02-11 stsp if (f && fclose(f) != 0 && err == NULL)
1021 638f9024 2019-05-13 stsp err = got_error_from_errno("fclose");
1022 199a4027 2019-02-02 stsp return err;
1026 e2e879a0 2019-03-11 stsp got_ref_list_free(struct got_reflist_head *refs)
1028 e2e879a0 2019-03-11 stsp struct got_reflist_entry *re;
1030 e2e879a0 2019-03-11 stsp while (!SIMPLEQ_EMPTY(refs)) {
1031 e2e879a0 2019-03-11 stsp re = SIMPLEQ_FIRST(refs);
1032 e2e879a0 2019-03-11 stsp SIMPLEQ_REMOVE_HEAD(refs, entry);
1033 e2e879a0 2019-03-11 stsp got_ref_close(re->ref);
1034 e2e879a0 2019-03-11 stsp free(re->id);
1041 b249b824 2019-05-09 stsp got_ref_is_symbolic(struct got_reference *ref)
1043 b249b824 2019-05-09 stsp return (ref->flags & GOT_REF_IS_SYMBOLIC);
1046 b249b824 2019-05-09 stsp const struct got_error *
1047 b249b824 2019-05-09 stsp got_ref_change_ref(struct got_reference *ref, struct got_object_id *id)
1049 b249b824 2019-05-09 stsp if (ref->flags & GOT_REF_IS_SYMBOLIC)
1050 b249b824 2019-05-09 stsp return got_error(GOT_ERR_BAD_REF_TYPE);
1052 b249b824 2019-05-09 stsp memcpy(ref->ref.ref.sha1, id->sha1, sizeof(ref->ref.ref.sha1));
1053 b249b824 2019-05-09 stsp return NULL;
1056 9e672c74 2019-03-11 stsp const struct got_error *
1057 d7b899ab 2020-03-25 stsp got_ref_change_symref(struct got_reference *ref, const char *refname)
1059 b249b824 2019-05-09 stsp char *new_name;
1061 b249b824 2019-05-09 stsp if ((ref->flags & GOT_REF_IS_SYMBOLIC) == 0)
1062 b249b824 2019-05-09 stsp return got_error(GOT_ERR_BAD_REF_TYPE);
1064 b249b824 2019-05-09 stsp new_name = strdup(refname);
1065 b249b824 2019-05-09 stsp if (new_name == NULL)
1066 638f9024 2019-05-13 stsp return got_error_from_errno("strdup");
1068 d7b899ab 2020-03-25 stsp free(ref->ref.symref.ref);
1069 d7b899ab 2020-03-25 stsp ref->ref.symref.ref = new_name;
1070 b249b824 2019-05-09 stsp return NULL;
1073 b249b824 2019-05-09 stsp const struct got_error *
1074 e8a967e0 2020-03-21 stsp got_ref_change_symref_to_ref(struct got_reference *symref,
1075 e8a967e0 2020-03-21 stsp struct got_object_id *id)
1077 e8a967e0 2020-03-21 stsp if ((symref->flags & GOT_REF_IS_SYMBOLIC) == 0)
1078 e8a967e0 2020-03-21 stsp return got_error(GOT_ERR_BAD_REF_TYPE);
1080 e8a967e0 2020-03-21 stsp symref->ref.ref.name = symref->ref.symref.name;
1081 e8a967e0 2020-03-21 stsp memcpy(symref->ref.ref.sha1, id->sha1, SHA1_DIGEST_LENGTH);
1082 e8a967e0 2020-03-21 stsp symref->flags &= ~GOT_REF_IS_SYMBOLIC;
1083 e8a967e0 2020-03-21 stsp return NULL;
1086 e8a967e0 2020-03-21 stsp const struct got_error *
1087 9e672c74 2019-03-11 stsp got_ref_write(struct got_reference *ref, struct got_repository *repo)
1089 9e672c74 2019-03-11 stsp const struct got_error *err = NULL, *unlock_err = NULL;
1090 9e672c74 2019-03-11 stsp const char *name = got_ref_get_name(ref);
1091 9e672c74 2019-03-11 stsp char *path_refs = NULL, *path = NULL, *tmppath = NULL;
1092 9e672c74 2019-03-11 stsp struct got_lockfile *lf = NULL;
1093 9e672c74 2019-03-11 stsp FILE *f = NULL;
1095 9e672c74 2019-03-11 stsp struct stat sb;
1097 9e672c74 2019-03-11 stsp path_refs = get_refs_dir_path(repo, name);
1098 9e672c74 2019-03-11 stsp if (path_refs == NULL) {
1099 638f9024 2019-05-13 stsp err = got_error_from_errno2("get_refs_dir_path", name);
1100 9e672c74 2019-03-11 stsp goto done;
1103 9e672c74 2019-03-11 stsp if (asprintf(&path, "%s/%s", path_refs, name) == -1) {
1104 638f9024 2019-05-13 stsp err = got_error_from_errno("asprintf");
1105 9e672c74 2019-03-11 stsp goto done;
1108 9e672c74 2019-03-11 stsp err = got_opentemp_named(&tmppath, &f, path);
1109 49c7094f 2019-03-11 stsp if (err) {
1110 d1667f0d 2019-03-11 stsp char *parent;
1111 49c7094f 2019-03-11 stsp if (!(err->code == GOT_ERR_ERRNO && errno == ENOENT))
1112 5e1c9f23 2019-03-11 stsp goto done;
1113 d1667f0d 2019-03-11 stsp err = got_path_dirname(&parent, path);
1115 0cd1c46a 2019-03-11 stsp goto done;
1116 0cd1c46a 2019-03-11 stsp err = got_path_mkdir(parent);
1117 5e1c9f23 2019-03-11 stsp free(parent);
1119 0cd1c46a 2019-03-11 stsp goto done;
1120 0cd1c46a 2019-03-11 stsp err = got_opentemp_named(&tmppath, &f, path);
1122 0cd1c46a 2019-03-11 stsp goto done;
1125 9e672c74 2019-03-11 stsp if (ref->flags & GOT_REF_IS_SYMBOLIC) {
1126 9e672c74 2019-03-11 stsp n = fprintf(f, "ref: %s\n", ref->ref.symref.ref);
1127 9e672c74 2019-03-11 stsp if (n != strlen(ref->ref.symref.ref) + 6) {
1128 9e672c74 2019-03-11 stsp err = got_ferror(f, GOT_ERR_IO);
1129 9e672c74 2019-03-11 stsp goto done;
1132 9e672c74 2019-03-11 stsp char hex[SHA1_DIGEST_STRING_LENGTH];
1133 9e672c74 2019-03-11 stsp if (got_sha1_digest_to_str(ref->ref.ref.sha1, hex,
1134 9e672c74 2019-03-11 stsp sizeof(hex)) == NULL) {
1135 9e672c74 2019-03-11 stsp err = got_error(GOT_ERR_BAD_REF_DATA);
1136 9e672c74 2019-03-11 stsp goto done;
1138 9e672c74 2019-03-11 stsp n = fprintf(f, "%s\n", hex);
1139 8fa2f096 2019-03-11 stsp if (n != sizeof(hex)) {
1140 9e672c74 2019-03-11 stsp err = got_ferror(f, GOT_ERR_IO);
1141 9e672c74 2019-03-11 stsp goto done;
1145 2f17228e 2019-05-12 stsp if (ref->lf == NULL) {
1146 2f17228e 2019-05-12 stsp err = got_lockfile_lock(&lf, path);
1148 2f17228e 2019-05-12 stsp goto done;
1151 9e672c74 2019-03-11 stsp /* XXX: check if old content matches our expectations? */
1153 0cd1c46a 2019-03-11 stsp if (stat(path, &sb) != 0) {
1154 0cd1c46a 2019-03-11 stsp if (errno != ENOENT) {
1155 638f9024 2019-05-13 stsp err = got_error_from_errno2("stat", path);
1156 0cd1c46a 2019-03-11 stsp goto done;
1158 0cd1c46a 2019-03-11 stsp sb.st_mode = GOT_DEFAULT_FILE_MODE;
1161 9e672c74 2019-03-11 stsp if (rename(tmppath, path) != 0) {
1162 638f9024 2019-05-13 stsp err = got_error_from_errno3("rename", tmppath, path);
1163 9e672c74 2019-03-11 stsp goto done;
1165 9e672c74 2019-03-11 stsp free(tmppath);
1166 9e672c74 2019-03-11 stsp tmppath = NULL;
1168 9e672c74 2019-03-11 stsp if (chmod(path, sb.st_mode) != 0) {
1169 638f9024 2019-05-13 stsp err = got_error_from_errno2("chmod", path);
1170 9e672c74 2019-03-11 stsp goto done;
1173 2f17228e 2019-05-12 stsp if (ref->lf == NULL && lf)
1174 9e672c74 2019-03-11 stsp unlock_err = got_lockfile_unlock(lf);
1176 9e672c74 2019-03-11 stsp if (fclose(f) != 0 && err == NULL)
1177 638f9024 2019-05-13 stsp err = got_error_from_errno("fclose");
1179 9e672c74 2019-03-11 stsp free(path_refs);
1180 9e672c74 2019-03-11 stsp free(path);
1181 9e672c74 2019-03-11 stsp if (tmppath) {
1182 9e672c74 2019-03-11 stsp if (unlink(tmppath) != 0 && err == NULL)
1183 638f9024 2019-05-13 stsp err = got_error_from_errno2("unlink", tmppath);
1184 9e672c74 2019-03-11 stsp free(tmppath);
1186 2d2e1378 2019-03-11 stsp return err ? err : unlock_err;
1189 598a8b91 2019-03-15 stsp static const struct got_error *
1190 598a8b91 2019-03-15 stsp delete_packed_ref(struct got_reference *delref, struct got_repository *repo)
1192 598a8b91 2019-03-15 stsp const struct got_error *err = NULL, *unlock_err = NULL;
1193 598a8b91 2019-03-15 stsp struct got_lockfile *lf = NULL;
1194 598a8b91 2019-03-15 stsp FILE *f = NULL, *tmpf = NULL;
1195 598a8b91 2019-03-15 stsp char *packed_refs_path, *tmppath = NULL;
1196 598a8b91 2019-03-15 stsp struct got_reflist_head refs;
1197 598a8b91 2019-03-15 stsp int found_delref = 0;
1199 598a8b91 2019-03-15 stsp /* The packed-refs file does not cotain symbolic references. */
1200 598a8b91 2019-03-15 stsp if (delref->flags & GOT_REF_IS_SYMBOLIC)
1201 598a8b91 2019-03-15 stsp return got_error(GOT_ERR_BAD_REF_DATA);
1203 598a8b91 2019-03-15 stsp SIMPLEQ_INIT(&refs);
1205 598a8b91 2019-03-15 stsp packed_refs_path = got_repo_get_path_packed_refs(repo);
1206 598a8b91 2019-03-15 stsp if (packed_refs_path == NULL)
1207 638f9024 2019-05-13 stsp return got_error_from_errno("got_repo_get_path_packed_refs");
1209 598a8b91 2019-03-15 stsp err = got_opentemp_named(&tmppath, &tmpf, packed_refs_path);
1211 598a8b91 2019-03-15 stsp goto done;
1213 2f17228e 2019-05-12 stsp if (delref->lf == NULL) {
1214 2f17228e 2019-05-12 stsp err = got_lockfile_lock(&lf, packed_refs_path);
1216 2f17228e 2019-05-12 stsp goto done;
1219 598a8b91 2019-03-15 stsp f = fopen(packed_refs_path, "r");
1220 598a8b91 2019-03-15 stsp if (f == NULL) {
1221 638f9024 2019-05-13 stsp err = got_error_from_errno2("fopen", packed_refs_path);
1222 598a8b91 2019-03-15 stsp goto done;
1225 598a8b91 2019-03-15 stsp char *line;
1226 598a8b91 2019-03-15 stsp size_t len;
1227 598a8b91 2019-03-15 stsp const char delim[3] = {'\0', '\0', '\0'};
1228 598a8b91 2019-03-15 stsp struct got_reference *ref;
1229 598a8b91 2019-03-15 stsp struct got_reflist_entry *new;
1231 598a8b91 2019-03-15 stsp line = fparseln(f, &len, NULL, delim, 0);
1232 598a8b91 2019-03-15 stsp if (line == NULL) {
1233 598a8b91 2019-03-15 stsp if (feof(f))
1235 598a8b91 2019-03-15 stsp err = got_ferror(f, GOT_ERR_BAD_REF_DATA);
1236 598a8b91 2019-03-15 stsp goto done;
1238 598a8b91 2019-03-15 stsp err = parse_packed_ref_line(&ref, NULL, line);
1239 598a8b91 2019-03-15 stsp free(line);
1241 598a8b91 2019-03-15 stsp goto done;
1242 598a8b91 2019-03-15 stsp if (ref == NULL)
1245 598a8b91 2019-03-15 stsp if (strcmp(ref->ref.ref.name, delref->ref.ref.name) == 0 &&
1246 598a8b91 2019-03-15 stsp memcmp(ref->ref.ref.sha1, delref->ref.ref.sha1,
1247 598a8b91 2019-03-15 stsp sizeof(delref->ref.ref.sha1)) == 0) {
1248 598a8b91 2019-03-15 stsp found_delref = 1;
1249 598a8b91 2019-03-15 stsp got_ref_close(ref);
1253 b8bad2ba 2019-08-23 stsp err = insert_ref(&new, &refs, ref, repo,
1254 b8bad2ba 2019-08-23 stsp got_ref_cmp_by_name, NULL);
1255 598a8b91 2019-03-15 stsp if (err || new == NULL /* duplicate */)
1256 598a8b91 2019-03-15 stsp got_ref_close(ref);
1258 598a8b91 2019-03-15 stsp goto done;
1261 598a8b91 2019-03-15 stsp if (found_delref) {
1262 598a8b91 2019-03-15 stsp struct got_reflist_entry *re;
1264 598a8b91 2019-03-15 stsp struct stat sb;
1266 598a8b91 2019-03-15 stsp n = fprintf(tmpf, "%s\n", GOT_PACKED_REFS_HEADER);
1267 598a8b91 2019-03-15 stsp if (n != sizeof(GOT_PACKED_REFS_HEADER)) {
1268 598a8b91 2019-03-15 stsp err = got_ferror(f, GOT_ERR_IO);
1269 598a8b91 2019-03-15 stsp goto done;
1272 598a8b91 2019-03-15 stsp SIMPLEQ_FOREACH(re, &refs, entry) {
1273 598a8b91 2019-03-15 stsp uint8_t hex[SHA1_DIGEST_STRING_LENGTH];
1275 598a8b91 2019-03-15 stsp if (got_sha1_digest_to_str(re->ref->ref.ref.sha1, hex,
1276 598a8b91 2019-03-15 stsp sizeof(hex)) == NULL) {
1277 598a8b91 2019-03-15 stsp err = got_error(GOT_ERR_BAD_REF_DATA);
1278 598a8b91 2019-03-15 stsp goto done;
1280 598a8b91 2019-03-15 stsp n = fprintf(tmpf, "%s ", hex);
1281 598a8b91 2019-03-15 stsp if (n != sizeof(hex)) {
1282 598a8b91 2019-03-15 stsp err = got_ferror(f, GOT_ERR_IO);
1283 598a8b91 2019-03-15 stsp goto done;
1285 598a8b91 2019-03-15 stsp n = fprintf(tmpf, "%s\n", re->ref->ref.ref.name);
1286 598a8b91 2019-03-15 stsp if (n != strlen(re->ref->ref.ref.name) + 1) {
1287 598a8b91 2019-03-15 stsp err = got_ferror(f, GOT_ERR_IO);
1288 598a8b91 2019-03-15 stsp goto done;
1292 598a8b91 2019-03-15 stsp if (fflush(tmpf) != 0) {
1293 638f9024 2019-05-13 stsp err = got_error_from_errno("fflush");
1294 598a8b91 2019-03-15 stsp goto done;
1297 598a8b91 2019-03-15 stsp if (stat(packed_refs_path, &sb) != 0) {
1298 598a8b91 2019-03-15 stsp if (errno != ENOENT) {
1299 638f9024 2019-05-13 stsp err = got_error_from_errno2("stat",
1300 230a42bd 2019-05-11 jcs packed_refs_path);
1301 598a8b91 2019-03-15 stsp goto done;
1303 598a8b91 2019-03-15 stsp sb.st_mode = GOT_DEFAULT_FILE_MODE;
1306 598a8b91 2019-03-15 stsp if (rename(tmppath, packed_refs_path) != 0) {
1307 638f9024 2019-05-13 stsp err = got_error_from_errno3("rename", tmppath,
1308 230a42bd 2019-05-11 jcs packed_refs_path);
1309 598a8b91 2019-03-15 stsp goto done;
1312 598a8b91 2019-03-15 stsp if (chmod(packed_refs_path, sb.st_mode) != 0) {
1313 638f9024 2019-05-13 stsp err = got_error_from_errno2("chmod",
1314 230a42bd 2019-05-11 jcs packed_refs_path);
1315 598a8b91 2019-03-15 stsp goto done;
1319 2f17228e 2019-05-12 stsp if (delref->lf == NULL && lf)
1320 598a8b91 2019-03-15 stsp unlock_err = got_lockfile_unlock(lf);
1322 598a8b91 2019-03-15 stsp if (fclose(f) != 0 && err == NULL)
1323 638f9024 2019-05-13 stsp err = got_error_from_errno("fclose");
1325 598a8b91 2019-03-15 stsp if (tmpf) {
1326 598a8b91 2019-03-15 stsp unlink(tmppath);
1327 598a8b91 2019-03-15 stsp if (fclose(tmpf) != 0 && err == NULL)
1328 638f9024 2019-05-13 stsp err = got_error_from_errno("fclose");
1330 598a8b91 2019-03-15 stsp free(tmppath);
1331 598a8b91 2019-03-15 stsp free(packed_refs_path);
1332 598a8b91 2019-03-15 stsp got_ref_list_free(&refs);
1333 598a8b91 2019-03-15 stsp return err ? err : unlock_err;
1336 2d2e1378 2019-03-11 stsp const struct got_error *
1337 2d2e1378 2019-03-11 stsp got_ref_delete(struct got_reference *ref, struct got_repository *repo)
1339 2d2e1378 2019-03-11 stsp const struct got_error *err = NULL, *unlock_err = NULL;
1340 2d2e1378 2019-03-11 stsp const char *name = got_ref_get_name(ref);
1341 2d2e1378 2019-03-11 stsp char *path_refs = NULL, *path = NULL;
1342 2d2e1378 2019-03-11 stsp struct got_lockfile *lf = NULL;
1344 598a8b91 2019-03-15 stsp if (ref->flags & GOT_REF_IS_PACKED)
1345 598a8b91 2019-03-15 stsp return delete_packed_ref(ref, repo);
1347 2d2e1378 2019-03-11 stsp path_refs = get_refs_dir_path(repo, name);
1348 2d2e1378 2019-03-11 stsp if (path_refs == NULL) {
1349 638f9024 2019-05-13 stsp err = got_error_from_errno2("get_refs_dir_path", name);
1350 2d2e1378 2019-03-11 stsp goto done;
1353 2d2e1378 2019-03-11 stsp if (asprintf(&path, "%s/%s", path_refs, name) == -1) {
1354 638f9024 2019-05-13 stsp err = got_error_from_errno("asprintf");
1355 2d2e1378 2019-03-11 stsp goto done;
1358 2f17228e 2019-05-12 stsp if (ref->lf == NULL) {
1359 2f17228e 2019-05-12 stsp err = got_lockfile_lock(&lf, path);
1361 2f17228e 2019-05-12 stsp goto done;
1364 2d2e1378 2019-03-11 stsp /* XXX: check if old content matches our expectations? */
1366 2d2e1378 2019-03-11 stsp if (unlink(path) != 0)
1367 638f9024 2019-05-13 stsp err = got_error_from_errno2("unlink", path);
1369 2f17228e 2019-05-12 stsp if (ref->lf == NULL && lf)
1370 2d2e1378 2019-03-11 stsp unlock_err = got_lockfile_unlock(lf);
1372 2d2e1378 2019-03-11 stsp free(path_refs);
1373 2d2e1378 2019-03-11 stsp free(path);
1374 9e672c74 2019-03-11 stsp return err ? err : unlock_err;
1377 2f17228e 2019-05-12 stsp const struct got_error *
1378 2f17228e 2019-05-12 stsp got_ref_unlock(struct got_reference *ref)
1380 2f17228e 2019-05-12 stsp const struct got_error *err;
1381 2f17228e 2019-05-12 stsp err = got_lockfile_unlock(ref->lf);
1382 2f17228e 2019-05-12 stsp ref->lf = NULL;
1383 2f17228e 2019-05-12 stsp return err;
