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1 5261c201 2018-04-01 stsp /*
2 5d56da81 2019-01-13 stsp * Copyright (c) 2018, 2019 Stefan Sperling <stsp@openbsd.org>
3 5261c201 2018-04-01 stsp *
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.
7 5261c201 2018-04-01 stsp *
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.
15 5261c201 2018-04-01 stsp */
16 5261c201 2018-04-01 stsp
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>
20 5261c201 2018-04-01 stsp
21 0fd469ce 2019-03-11 stsp #include <errno.h>
22 a04f49d2 2019-02-04 stsp #include <dirent.h>
23 56e0773d 2019-11-28 stsp #include <limits.h>
24 5261c201 2018-04-01 stsp #include <sha1.h>
25 69c6accf 2023-02-04 op #include <sha2.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>
34 5261c201 2018-04-01 stsp
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"
41 5261c201 2018-04-01 stsp
42 1362b0e3 2023-02-04 op #include "got_lib_hash.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 7b5b670e 2020-12-25 stsp #include "got_lib_object_idset.h"
47 f77a24b0 2019-03-11 stsp #include "got_lib_lockfile.h"
48 5261c201 2018-04-01 stsp
49 fb79db15 2019-02-01 stsp #ifndef nitems
50 fb79db15 2019-02-01 stsp #define nitems(_a) (sizeof(_a) / sizeof((_a)[0]))
51 fb79db15 2019-02-01 stsp #endif
52 fb79db15 2019-02-01 stsp
53 d1f2edc9 2018-06-13 stsp #define GOT_REF_HEADS "heads"
54 d1f2edc9 2018-06-13 stsp #define GOT_REF_TAGS "tags"
55 d1f2edc9 2018-06-13 stsp #define GOT_REF_REMOTES "remotes"
56 d1f2edc9 2018-06-13 stsp
57 598a8b91 2019-03-15 stsp /*
58 598a8b91 2019-03-15 stsp * We do not resolve tags yet, and don't yet care about sorting refs either,
59 598a8b91 2019-03-15 stsp * so packed-refs files we write contain a minimal header which disables all
60 598a8b91 2019-03-15 stsp * packed-refs "traits" supported by Git.
61 598a8b91 2019-03-15 stsp */
62 598a8b91 2019-03-15 stsp #define GOT_PACKED_REFS_HEADER "# pack-refs with:"
63 598a8b91 2019-03-15 stsp
64 5261c201 2018-04-01 stsp /* A symbolic reference. */
65 5261c201 2018-04-01 stsp struct got_symref {
66 5261c201 2018-04-01 stsp char *name;
67 5261c201 2018-04-01 stsp char *ref;
68 5261c201 2018-04-01 stsp };
69 29e86f7a 2019-08-12 stsp
70 29e86f7a 2019-08-12 stsp #define GOT_REF_RECURSE_MAX 20
71 5261c201 2018-04-01 stsp
72 5261c201 2018-04-01 stsp /* A non-symbolic reference (there is no better designation). */
73 5261c201 2018-04-01 stsp struct got_ref {
74 5261c201 2018-04-01 stsp char *name;
75 faf5b56f 2023-01-31 op struct got_object_id id;
76 5261c201 2018-04-01 stsp };
77 5261c201 2018-04-01 stsp
78 5261c201 2018-04-01 stsp /* A reference which points to an arbitrary object. */
79 5261c201 2018-04-01 stsp struct got_reference {
80 5261c201 2018-04-01 stsp unsigned int flags;
81 5261c201 2018-04-01 stsp #define GOT_REF_IS_SYMBOLIC 0x01
82 f9267c9a 2019-03-15 stsp #define GOT_REF_IS_PACKED 0x02
83 5261c201 2018-04-01 stsp
84 5261c201 2018-04-01 stsp union {
85 5261c201 2018-04-01 stsp struct got_ref ref;
86 5261c201 2018-04-01 stsp struct got_symref symref;
87 5261c201 2018-04-01 stsp } ref;
88 2f17228e 2019-05-12 stsp
89 2f17228e 2019-05-12 stsp struct got_lockfile *lf;
90 3f338f0a 2021-07-27 stsp time_t mtime;
91 2c9e323b 2021-10-10 stsp
92 2c9e323b 2021-10-10 stsp /* Cached timestamp for got_ref_cmp_by_commit_timestamp_descending() */
93 2c9e323b 2021-10-10 stsp time_t committer_time;
94 5261c201 2018-04-01 stsp };
95 5261c201 2018-04-01 stsp
96 5261c201 2018-04-01 stsp static const struct got_error *
97 f9267c9a 2019-03-15 stsp alloc_ref(struct got_reference **ref, const char *name,
98 3f338f0a 2021-07-27 stsp struct got_object_id *id, int flags, time_t mtime)
99 5261c201 2018-04-01 stsp {
100 f9267c9a 2019-03-15 stsp const struct got_error *err = NULL;
101 5261c201 2018-04-01 stsp
102 f9267c9a 2019-03-15 stsp *ref = calloc(1, sizeof(**ref));
103 f9267c9a 2019-03-15 stsp if (*ref == NULL)
104 638f9024 2019-05-13 stsp return got_error_from_errno("calloc");
105 f9267c9a 2019-03-15 stsp
106 faf5b56f 2023-01-31 op memcpy(&(*ref)->ref.ref.id, id, sizeof((*ref)->ref.ref.id));
107 c980e470 2019-03-15 stsp (*ref)->flags = flags;
108 f9267c9a 2019-03-15 stsp (*ref)->ref.ref.name = strdup(name);
109 3f338f0a 2021-07-27 stsp (*ref)->mtime = mtime;
110 f9267c9a 2019-03-15 stsp if ((*ref)->ref.ref.name == NULL) {
111 638f9024 2019-05-13 stsp err = got_error_from_errno("strdup");
112 c980e470 2019-03-15 stsp got_ref_close(*ref);
113 f9267c9a 2019-03-15 stsp *ref = NULL;
114 5261c201 2018-04-01 stsp }
115 f9267c9a 2019-03-15 stsp return err;
116 f9267c9a 2019-03-15 stsp }
117 5261c201 2018-04-01 stsp
118 f9267c9a 2019-03-15 stsp static const struct got_error *
119 f9267c9a 2019-03-15 stsp alloc_symref(struct got_reference **ref, const char *name,
120 f9267c9a 2019-03-15 stsp const char *target_ref, int flags)
121 f9267c9a 2019-03-15 stsp {
122 f9267c9a 2019-03-15 stsp const struct got_error *err = NULL;
123 f9267c9a 2019-03-15 stsp
124 5261c201 2018-04-01 stsp *ref = calloc(1, sizeof(**ref));
125 5261c201 2018-04-01 stsp if (*ref == NULL)
126 638f9024 2019-05-13 stsp return got_error_from_errno("calloc");
127 f9267c9a 2019-03-15 stsp
128 f9267c9a 2019-03-15 stsp (*ref)->flags = GOT_REF_IS_SYMBOLIC | flags;
129 f9267c9a 2019-03-15 stsp (*ref)->ref.symref.name = strdup(name);
130 f9267c9a 2019-03-15 stsp if ((*ref)->ref.symref.name == NULL) {
131 638f9024 2019-05-13 stsp err = got_error_from_errno("strdup");
132 f9267c9a 2019-03-15 stsp got_ref_close(*ref);
133 f9267c9a 2019-03-15 stsp *ref = NULL;
134 cdb8f1fa 2019-08-28 hiltjo return err;
135 f9267c9a 2019-03-15 stsp }
136 f9267c9a 2019-03-15 stsp (*ref)->ref.symref.ref = strdup(target_ref);
137 f9267c9a 2019-03-15 stsp if ((*ref)->ref.symref.ref == NULL) {
138 638f9024 2019-05-13 stsp err = got_error_from_errno("strdup");
139 f9267c9a 2019-03-15 stsp got_ref_close(*ref);
140 f9267c9a 2019-03-15 stsp *ref = NULL;
141 f9267c9a 2019-03-15 stsp }
142 f9267c9a 2019-03-15 stsp return err;
143 5261c201 2018-04-01 stsp }
144 5261c201 2018-04-01 stsp
145 5261c201 2018-04-01 stsp static const struct got_error *
146 f9267c9a 2019-03-15 stsp parse_symref(struct got_reference **ref, const char *name, const char *line)
147 f9267c9a 2019-03-15 stsp {
148 f9267c9a 2019-03-15 stsp if (line[0] == '\0')
149 f9267c9a 2019-03-15 stsp return got_error(GOT_ERR_BAD_REF_DATA);
150 f9267c9a 2019-03-15 stsp
151 f9267c9a 2019-03-15 stsp return alloc_symref(ref, name, line, 0);
152 f9267c9a 2019-03-15 stsp }
153 f9267c9a 2019-03-15 stsp
154 f9267c9a 2019-03-15 stsp static const struct got_error *
155 3f338f0a 2021-07-27 stsp parse_ref_line(struct got_reference **ref, const char *name, const char *line,
156 3f338f0a 2021-07-27 stsp time_t mtime)
157 5261c201 2018-04-01 stsp {
158 5892cdd6 2019-03-10 stsp struct got_object_id id;
159 5261c201 2018-04-01 stsp
160 5cf598c4 2023-02-04 op memset(&id, 0, sizeof(id));
161 5cf598c4 2023-02-04 op
162 5261c201 2018-04-01 stsp if (strncmp(line, "ref: ", 5) == 0) {
163 5261c201 2018-04-01 stsp line += 5;
164 5261c201 2018-04-01 stsp return parse_symref(ref, name, line);
165 5261c201 2018-04-01 stsp }
166 5261c201 2018-04-01 stsp
167 5cf598c4 2023-02-04 op if (got_parse_sha256_digest(id.hash, line))
168 5cf598c4 2023-02-04 op id.algo = GOT_HASH_SHA256;
169 5cf598c4 2023-02-04 op else if (got_parse_sha1_digest(id.hash, line))
170 5cf598c4 2023-02-04 op id.algo = GOT_HASH_SHA1;
171 5cf598c4 2023-02-04 op else
172 30c0868d 2019-02-03 stsp return got_error(GOT_ERR_BAD_REF_DATA);
173 5261c201 2018-04-01 stsp
174 3f338f0a 2021-07-27 stsp return alloc_ref(ref, name, &id, 0, mtime);
175 5261c201 2018-04-01 stsp }
176 5261c201 2018-04-01 stsp
177 5261c201 2018-04-01 stsp static const struct got_error *
178 5261c201 2018-04-01 stsp parse_ref_file(struct got_reference **ref, const char *name,
179 b2070a3f 2020-03-22 stsp const char *absname, const char *abspath, int lock)
180 5261c201 2018-04-01 stsp {
181 5261c201 2018-04-01 stsp const struct got_error *err = NULL;
182 c0a1c016 2019-03-15 stsp FILE *f;
183 c30018ad 2019-10-21 stsp char *line = NULL;
184 c30018ad 2019-10-21 stsp size_t linesize = 0;
185 c30018ad 2019-10-21 stsp ssize_t linelen;
186 2f17228e 2019-05-12 stsp struct got_lockfile *lf = NULL;
187 3f338f0a 2021-07-27 stsp struct stat sb;
188 5261c201 2018-04-01 stsp
189 2f17228e 2019-05-12 stsp if (lock) {
190 5345b4c7 2021-07-06 stsp err = got_lockfile_lock(&lf, abspath, -1);
191 9f142382 2020-03-21 stsp if (err) {
192 9f142382 2020-03-21 stsp if (err->code == GOT_ERR_ERRNO && errno == ENOENT)
193 b2070a3f 2020-03-22 stsp err = got_error_not_ref(name);
194 9f142382 2020-03-21 stsp return err;
195 9f142382 2020-03-21 stsp }
196 2f17228e 2019-05-12 stsp }
197 2f17228e 2019-05-12 stsp
198 00fe21f2 2021-12-31 stsp f = fopen(abspath, "rbe");
199 f5c58ad1 2019-05-12 stsp if (f == NULL) {
200 b2070a3f 2020-03-22 stsp if (errno != ENOTDIR && errno != ENOENT)
201 b2070a3f 2020-03-22 stsp err = got_error_from_errno2("fopen", abspath);
202 b2070a3f 2020-03-22 stsp else
203 b2070a3f 2020-03-22 stsp err = got_error_not_ref(name);
204 f5c58ad1 2019-05-12 stsp if (lock)
205 5345b4c7 2021-07-06 stsp got_lockfile_unlock(lf, -1);
206 b2070a3f 2020-03-22 stsp return err;
207 f5c58ad1 2019-05-12 stsp }
208 3f338f0a 2021-07-27 stsp if (fstat(fileno(f), &sb) == -1) {
209 3f338f0a 2021-07-27 stsp err = got_error_from_errno2("fstat", abspath);
210 3f338f0a 2021-07-27 stsp goto done;
211 3f338f0a 2021-07-27 stsp }
212 5261c201 2018-04-01 stsp
213 c30018ad 2019-10-21 stsp linelen = getline(&line, &linesize, f);
214 c30018ad 2019-10-21 stsp if (linelen == -1) {
215 c30018ad 2019-10-21 stsp if (feof(f))
216 c30018ad 2019-10-21 stsp err = NULL; /* ignore empty files (could be locks) */
217 b2070a3f 2020-03-22 stsp else {
218 b2070a3f 2020-03-22 stsp if (errno == EISDIR)
219 b2070a3f 2020-03-22 stsp err = got_error(GOT_ERR_NOT_REF);
220 b2070a3f 2020-03-22 stsp else if (ferror(f))
221 b2070a3f 2020-03-22 stsp err = got_ferror(f, GOT_ERR_IO);
222 b2070a3f 2020-03-22 stsp else
223 b2070a3f 2020-03-22 stsp err = got_error_from_errno2("getline", abspath);
224 b2070a3f 2020-03-22 stsp }
225 f5c58ad1 2019-05-12 stsp if (lock)
226 5345b4c7 2021-07-06 stsp got_lockfile_unlock(lf, -1);
227 5261c201 2018-04-01 stsp goto done;
228 5261c201 2018-04-01 stsp }
229 c30018ad 2019-10-21 stsp while (linelen > 0 && line[linelen - 1] == '\n') {
230 c30018ad 2019-10-21 stsp line[linelen - 1] = '\0';
231 c30018ad 2019-10-21 stsp linelen--;
232 c30018ad 2019-10-21 stsp }
233 5261c201 2018-04-01 stsp
234 3f338f0a 2021-07-27 stsp err = parse_ref_line(ref, absname, line, sb.st_mtime);
235 f5c58ad1 2019-05-12 stsp if (lock) {
236 f5c58ad1 2019-05-12 stsp if (err)
237 5345b4c7 2021-07-06 stsp got_lockfile_unlock(lf, -1);
238 f5c58ad1 2019-05-12 stsp else {
239 f5c58ad1 2019-05-12 stsp if (*ref)
240 f5c58ad1 2019-05-12 stsp (*ref)->lf = lf;
241 f5c58ad1 2019-05-12 stsp else
242 5345b4c7 2021-07-06 stsp got_lockfile_unlock(lf, -1);
243 f5c58ad1 2019-05-12 stsp }
244 f5c58ad1 2019-05-12 stsp }
245 5261c201 2018-04-01 stsp done:
246 5261c201 2018-04-01 stsp free(line);
247 56b63ca4 2021-01-22 stsp if (fclose(f) == EOF && err == NULL) {
248 638f9024 2019-05-13 stsp err = got_error_from_errno("fclose");
249 2f17228e 2019-05-12 stsp if (*ref) {
250 f5c58ad1 2019-05-12 stsp if (lock)
251 f5c58ad1 2019-05-12 stsp got_ref_unlock(*ref);
252 2f17228e 2019-05-12 stsp got_ref_close(*ref);
253 2f17228e 2019-05-12 stsp *ref = NULL;
254 2f17228e 2019-05-12 stsp }
255 2f17228e 2019-05-12 stsp }
256 5261c201 2018-04-01 stsp return err;
257 5261c201 2018-04-01 stsp }
258 5261c201 2018-04-01 stsp
259 c5f754cc 2019-02-01 stsp static int
260 c5f754cc 2019-02-01 stsp is_well_known_ref(const char *refname)
261 5261c201 2018-04-01 stsp {
262 c5f754cc 2019-02-01 stsp return (strcmp(refname, GOT_REF_HEAD) == 0 ||
263 5261c201 2018-04-01 stsp strcmp(refname, GOT_REF_ORIG_HEAD) == 0 ||
264 5261c201 2018-04-01 stsp strcmp(refname, GOT_REF_MERGE_HEAD) == 0 ||
265 c5f754cc 2019-02-01 stsp strcmp(refname, GOT_REF_FETCH_HEAD) == 0);
266 c5f754cc 2019-02-01 stsp }
267 c5f754cc 2019-02-01 stsp
268 c5f754cc 2019-02-01 stsp static char *
269 c5f754cc 2019-02-01 stsp get_refs_dir_path(struct got_repository *repo, const char *refname)
270 c5f754cc 2019-02-01 stsp {
271 c5f754cc 2019-02-01 stsp if (is_well_known_ref(refname) || strncmp(refname, "refs/", 5) == 0)
272 6e9da951 2019-01-06 stsp return strdup(got_repo_get_path_git_dir(repo));
273 5261c201 2018-04-01 stsp
274 5261c201 2018-04-01 stsp return got_repo_get_path_refs(repo);
275 5892cdd6 2019-03-10 stsp }
276 5892cdd6 2019-03-10 stsp
277 5892cdd6 2019-03-10 stsp const struct got_error *
278 5892cdd6 2019-03-10 stsp got_ref_alloc(struct got_reference **ref, const char *name,
279 5892cdd6 2019-03-10 stsp struct got_object_id *id)
280 5892cdd6 2019-03-10 stsp {
281 63e5aa5c 2021-08-23 stsp if (!got_ref_name_is_valid(name))
282 24b5452a 2019-10-09 stsp return got_error_path(name, GOT_ERR_BAD_REF_NAME);
283 f77a24b0 2019-03-11 stsp
284 3f338f0a 2021-07-27 stsp return alloc_ref(ref, name, id, 0, 0);
285 aaf88317 2019-07-10 stsp }
286 aaf88317 2019-07-10 stsp
287 aaf88317 2019-07-10 stsp const struct got_error *
288 aaf88317 2019-07-10 stsp got_ref_alloc_symref(struct got_reference **ref, const char *name,
289 aaf88317 2019-07-10 stsp struct got_reference *target_ref)
290 aaf88317 2019-07-10 stsp {
291 63e5aa5c 2021-08-23 stsp if (!got_ref_name_is_valid(name))
292 24b5452a 2019-10-09 stsp return got_error_path(name, GOT_ERR_BAD_REF_NAME);
293 aaf88317 2019-07-10 stsp
294 aaf88317 2019-07-10 stsp return alloc_symref(ref, name, got_ref_get_name(target_ref), 0);
295 5261c201 2018-04-01 stsp }
296 5261c201 2018-04-01 stsp
297 d1f2edc9 2018-06-13 stsp static const struct got_error *
298 fb79db15 2019-02-01 stsp parse_packed_ref_line(struct got_reference **ref, const char *abs_refname,
299 3f338f0a 2021-07-27 stsp const char *line, time_t mtime)
300 fb79db15 2019-02-01 stsp {
301 5892cdd6 2019-03-10 stsp struct got_object_id id;
302 5892cdd6 2019-03-10 stsp const char *name;
303 fb79db15 2019-02-01 stsp
304 fb79db15 2019-02-01 stsp *ref = NULL;
305 fb79db15 2019-02-01 stsp
306 532920c8 2019-02-01 stsp if (line[0] == '#' || line[0] == '^')
307 fb79db15 2019-02-01 stsp return NULL;
308 fb79db15 2019-02-01 stsp
309 3093e2d7 2023-02-04 op if (!got_parse_sha1_digest(id.hash, line))
310 30c0868d 2019-02-03 stsp return got_error(GOT_ERR_BAD_REF_DATA);
311 fb79db15 2019-02-01 stsp
312 199a4027 2019-02-02 stsp if (abs_refname) {
313 199a4027 2019-02-02 stsp if (strcmp(line + SHA1_DIGEST_STRING_LENGTH, abs_refname) != 0)
314 199a4027 2019-02-02 stsp return NULL;
315 5892cdd6 2019-03-10 stsp name = abs_refname;
316 5892cdd6 2019-03-10 stsp } else
317 5892cdd6 2019-03-10 stsp name = line + SHA1_DIGEST_STRING_LENGTH;
318 fb79db15 2019-02-01 stsp
319 3f338f0a 2021-07-27 stsp return alloc_ref(ref, name, &id, GOT_REF_IS_PACKED, mtime);
320 fb79db15 2019-02-01 stsp }
321 fb79db15 2019-02-01 stsp
322 fb79db15 2019-02-01 stsp static const struct got_error *
323 0dec1cc0 2019-02-01 stsp open_packed_ref(struct got_reference **ref, FILE *f, const char **subdirs,
324 3f338f0a 2021-07-27 stsp int nsubdirs, const char *refname, time_t mtime)
325 fb79db15 2019-02-01 stsp {
326 fb79db15 2019-02-01 stsp const struct got_error *err = NULL;
327 fb79db15 2019-02-01 stsp char *abs_refname;
328 9bdd68dd 2020-01-02 naddy char *line = NULL;
329 9bdd68dd 2020-01-02 naddy size_t linesize = 0;
330 9bdd68dd 2020-01-02 naddy ssize_t linelen;
331 0dec1cc0 2019-02-01 stsp int i, ref_is_absolute = (strncmp(refname, "refs/", 5) == 0);
332 fb79db15 2019-02-01 stsp
333 1e37702e 2019-02-04 stsp *ref = NULL;
334 1e37702e 2019-02-04 stsp
335 0dec1cc0 2019-02-01 stsp if (ref_is_absolute)
336 0dec1cc0 2019-02-01 stsp abs_refname = (char *)refname;
337 fb79db15 2019-02-01 stsp do {
338 9bdd68dd 2020-01-02 naddy linelen = getline(&line, &linesize, f);
339 9bdd68dd 2020-01-02 naddy if (linelen == -1) {
340 7ab0422a 2019-03-15 stsp if (feof(f))
341 7ab0422a 2019-03-15 stsp break;
342 7ab0422a 2019-03-15 stsp err = got_ferror(f, GOT_ERR_BAD_REF_DATA);
343 fb79db15 2019-02-01 stsp break;
344 7ab0422a 2019-03-15 stsp }
345 9bdd68dd 2020-01-02 naddy if (linelen > 0 && line[linelen - 1] == '\n')
346 9bdd68dd 2020-01-02 naddy line[linelen - 1] = '\0';
347 0dec1cc0 2019-02-01 stsp for (i = 0; i < nsubdirs; i++) {
348 0dec1cc0 2019-02-01 stsp if (!ref_is_absolute &&
349 0dec1cc0 2019-02-01 stsp asprintf(&abs_refname, "refs/%s/%s", subdirs[i],
350 0dec1cc0 2019-02-01 stsp refname) == -1)
351 638f9024 2019-05-13 stsp return got_error_from_errno("asprintf");
352 3f338f0a 2021-07-27 stsp err = parse_packed_ref_line(ref, abs_refname, line,
353 3f338f0a 2021-07-27 stsp mtime);
354 0dec1cc0 2019-02-01 stsp if (!ref_is_absolute)
355 0dec1cc0 2019-02-01 stsp free(abs_refname);
356 532920c8 2019-02-01 stsp if (err || *ref != NULL)
357 0dec1cc0 2019-02-01 stsp break;
358 0dec1cc0 2019-02-01 stsp }
359 fb79db15 2019-02-01 stsp if (err)
360 fb79db15 2019-02-01 stsp break;
361 fb79db15 2019-02-01 stsp } while (*ref == NULL);
362 9bdd68dd 2020-01-02 naddy free(line);
363 fb79db15 2019-02-01 stsp
364 fb79db15 2019-02-01 stsp return err;
365 fb79db15 2019-02-01 stsp }
366 fb79db15 2019-02-01 stsp
367 fb79db15 2019-02-01 stsp static const struct got_error *
368 d1f2edc9 2018-06-13 stsp open_ref(struct got_reference **ref, const char *path_refs, const char *subdir,
369 2f17228e 2019-05-12 stsp const char *name, int lock)
370 d1f2edc9 2018-06-13 stsp {
371 d1f2edc9 2018-06-13 stsp const struct got_error *err = NULL;
372 a04f49d2 2019-02-04 stsp char *path = NULL;
373 a04f49d2 2019-02-04 stsp char *absname = NULL;
374 a04f49d2 2019-02-04 stsp int ref_is_absolute = (strncmp(name, "refs/", 5) == 0);
375 75236079 2020-03-25 stsp int ref_is_well_known = (subdir[0] == '\0' && is_well_known_ref(name));
376 d1f2edc9 2018-06-13 stsp
377 1e37702e 2019-02-04 stsp *ref = NULL;
378 1e37702e 2019-02-04 stsp
379 63e5aa5c 2021-08-23 stsp if (!got_ref_name_is_valid(name))
380 57c18198 2021-05-24 stsp return got_error_path(name, GOT_ERR_BAD_REF_NAME);
381 57c18198 2021-05-24 stsp
382 a04f49d2 2019-02-04 stsp if (ref_is_absolute || ref_is_well_known) {
383 a04f49d2 2019-02-04 stsp if (asprintf(&path, "%s/%s", path_refs, name) == -1)
384 638f9024 2019-05-13 stsp return got_error_from_errno("asprintf");
385 a04f49d2 2019-02-04 stsp absname = (char *)name;
386 a04f49d2 2019-02-04 stsp } else {
387 58908ed0 2019-03-11 stsp if (asprintf(&path, "%s/%s%s%s", path_refs, subdir,
388 58908ed0 2019-03-11 stsp subdir[0] ? "/" : "", name) == -1)
389 638f9024 2019-05-13 stsp return got_error_from_errno("asprintf");
390 d1f2edc9 2018-06-13 stsp
391 58908ed0 2019-03-11 stsp if (asprintf(&absname, "refs/%s%s%s",
392 58908ed0 2019-03-11 stsp subdir, subdir[0] ? "/" : "", name) == -1) {
393 638f9024 2019-05-13 stsp err = got_error_from_errno("asprintf");
394 a04f49d2 2019-02-04 stsp goto done;
395 a04f49d2 2019-02-04 stsp }
396 a04f49d2 2019-02-04 stsp }
397 a04f49d2 2019-02-04 stsp
398 b2070a3f 2020-03-22 stsp err = parse_ref_file(ref, name, absname, path, lock);
399 d1f2edc9 2018-06-13 stsp done:
400 a04f49d2 2019-02-04 stsp if (!ref_is_absolute && !ref_is_well_known)
401 a04f49d2 2019-02-04 stsp free(absname);
402 a04f49d2 2019-02-04 stsp free(path);
403 d1f2edc9 2018-06-13 stsp return err;
404 d1f2edc9 2018-06-13 stsp }
405 d1f2edc9 2018-06-13 stsp
406 5261c201 2018-04-01 stsp const struct got_error *
407 5261c201 2018-04-01 stsp got_ref_open(struct got_reference **ref, struct got_repository *repo,
408 abc59930 2021-09-05 naddy const char *refname, int lock)
409 5261c201 2018-04-01 stsp {
410 5261c201 2018-04-01 stsp const struct got_error *err = NULL;
411 c3821bef 2022-07-21 florian char *packed_refs_path = NULL, *path_refs = NULL;
412 fb79db15 2019-02-01 stsp const char *subdirs[] = {
413 fb79db15 2019-02-01 stsp GOT_REF_HEADS, GOT_REF_TAGS, GOT_REF_REMOTES
414 fb79db15 2019-02-01 stsp };
415 16aeacf7 2020-11-26 stsp size_t i;
416 16aeacf7 2020-11-26 stsp int well_known = is_well_known_ref(refname);
417 a875589a 2019-05-12 stsp struct got_lockfile *lf = NULL;
418 1e37702e 2019-02-04 stsp
419 1e37702e 2019-02-04 stsp *ref = NULL;
420 e135804e 2019-02-10 stsp
421 e135804e 2019-02-10 stsp path_refs = get_refs_dir_path(repo, refname);
422 e135804e 2019-02-10 stsp if (path_refs == NULL) {
423 638f9024 2019-05-13 stsp err = got_error_from_errno2("get_refs_dir_path", refname);
424 e135804e 2019-02-10 stsp goto done;
425 e135804e 2019-02-10 stsp }
426 5261c201 2018-04-01 stsp
427 0885ce8f 2019-05-12 stsp if (well_known) {
428 0885ce8f 2019-05-12 stsp err = open_ref(ref, path_refs, "", refname, lock);
429 0885ce8f 2019-05-12 stsp } else {
430 c5f754cc 2019-02-01 stsp FILE *f;
431 c5f754cc 2019-02-01 stsp
432 e135804e 2019-02-10 stsp /* Search on-disk refs before packed refs! */
433 e135804e 2019-02-10 stsp for (i = 0; i < nitems(subdirs); i++) {
434 2f17228e 2019-05-12 stsp err = open_ref(ref, path_refs, subdirs[i], refname,
435 2f17228e 2019-05-12 stsp lock);
436 b2070a3f 2020-03-22 stsp if ((err && err->code != GOT_ERR_NOT_REF) || *ref)
437 e135804e 2019-02-10 stsp goto done;
438 e135804e 2019-02-10 stsp }
439 e135804e 2019-02-10 stsp
440 c5f754cc 2019-02-01 stsp packed_refs_path = got_repo_get_path_packed_refs(repo);
441 e135804e 2019-02-10 stsp if (packed_refs_path == NULL) {
442 638f9024 2019-05-13 stsp err = got_error_from_errno(
443 230a42bd 2019-05-11 jcs "got_repo_get_path_packed_refs");
444 e135804e 2019-02-10 stsp goto done;
445 e135804e 2019-02-10 stsp }
446 c5f754cc 2019-02-01 stsp
447 2f17228e 2019-05-12 stsp if (lock) {
448 5345b4c7 2021-07-06 stsp err = got_lockfile_lock(&lf, packed_refs_path, -1);
449 2f17228e 2019-05-12 stsp if (err)
450 2f17228e 2019-05-12 stsp goto done;
451 2f17228e 2019-05-12 stsp }
452 00fe21f2 2021-12-31 stsp f = fopen(packed_refs_path, "rbe");
453 c5f754cc 2019-02-01 stsp if (f != NULL) {
454 3f338f0a 2021-07-27 stsp struct stat sb;
455 3f338f0a 2021-07-27 stsp if (fstat(fileno(f), &sb) == -1) {
456 3f338f0a 2021-07-27 stsp err = got_error_from_errno2("fstat",
457 3f338f0a 2021-07-27 stsp packed_refs_path);
458 3f338f0a 2021-07-27 stsp goto done;
459 3f338f0a 2021-07-27 stsp }
460 0dec1cc0 2019-02-01 stsp err = open_packed_ref(ref, f, subdirs, nitems(subdirs),
461 3f338f0a 2021-07-27 stsp refname, sb.st_mtime);
462 a875589a 2019-05-12 stsp if (!err) {
463 56b63ca4 2021-01-22 stsp if (fclose(f) == EOF) {
464 638f9024 2019-05-13 stsp err = got_error_from_errno("fclose");
465 a875589a 2019-05-12 stsp got_ref_close(*ref);
466 a875589a 2019-05-12 stsp *ref = NULL;
467 6e472abb 2019-05-13 stsp } else if (*ref)
468 a875589a 2019-05-12 stsp (*ref)->lf = lf;
469 a875589a 2019-05-12 stsp }
470 fb79db15 2019-02-01 stsp }
471 fb79db15 2019-02-01 stsp }
472 e135804e 2019-02-10 stsp done:
473 5b575c25 2019-05-12 stsp if (!err && *ref == NULL)
474 1e37702e 2019-02-04 stsp err = got_error_not_ref(refname);
475 a875589a 2019-05-12 stsp if (err && lf)
476 5345b4c7 2021-07-06 stsp got_lockfile_unlock(lf, -1);
477 c3821bef 2022-07-21 florian free(packed_refs_path);
478 5261c201 2018-04-01 stsp free(path_refs);
479 5261c201 2018-04-01 stsp return err;
480 5261c201 2018-04-01 stsp }
481 5261c201 2018-04-01 stsp
482 5261c201 2018-04-01 stsp void
483 5261c201 2018-04-01 stsp got_ref_close(struct got_reference *ref)
484 5261c201 2018-04-01 stsp {
485 e09d28b1 2019-03-15 stsp if (ref->flags & GOT_REF_IS_SYMBOLIC) {
486 5261c201 2018-04-01 stsp free(ref->ref.symref.name);
487 e09d28b1 2019-03-15 stsp free(ref->ref.symref.ref);
488 e09d28b1 2019-03-15 stsp } else
489 5261c201 2018-04-01 stsp free(ref->ref.ref.name);
490 5261c201 2018-04-01 stsp free(ref);
491 5261c201 2018-04-01 stsp }
492 5261c201 2018-04-01 stsp
493 5261c201 2018-04-01 stsp struct got_reference *
494 5261c201 2018-04-01 stsp got_ref_dup(struct got_reference *ref)
495 5261c201 2018-04-01 stsp {
496 5261c201 2018-04-01 stsp struct got_reference *ret;
497 5261c201 2018-04-01 stsp
498 5261c201 2018-04-01 stsp ret = calloc(1, sizeof(*ret));
499 5261c201 2018-04-01 stsp if (ret == NULL)
500 5261c201 2018-04-01 stsp return NULL;
501 5261c201 2018-04-01 stsp
502 5261c201 2018-04-01 stsp ret->flags = ref->flags;
503 5261c201 2018-04-01 stsp if (ref->flags & GOT_REF_IS_SYMBOLIC) {
504 5261c201 2018-04-01 stsp ret->ref.symref.name = strdup(ref->ref.symref.name);
505 5261c201 2018-04-01 stsp if (ret->ref.symref.name == NULL) {
506 5261c201 2018-04-01 stsp free(ret);
507 5261c201 2018-04-01 stsp return NULL;
508 5261c201 2018-04-01 stsp }
509 5261c201 2018-04-01 stsp ret->ref.symref.ref = strdup(ref->ref.symref.ref);
510 5261c201 2018-04-01 stsp if (ret->ref.symref.ref == NULL) {
511 5261c201 2018-04-01 stsp free(ret->ref.symref.name);
512 5261c201 2018-04-01 stsp free(ret);
513 5261c201 2018-04-01 stsp return NULL;
514 5261c201 2018-04-01 stsp }
515 5261c201 2018-04-01 stsp } else {
516 4c4ce67b 2020-12-25 stsp ret->ref.ref.name = strdup(ref->ref.ref.name);
517 4c4ce67b 2020-12-25 stsp if (ret->ref.ref.name == NULL) {
518 5261c201 2018-04-01 stsp free(ret);
519 5261c201 2018-04-01 stsp return NULL;
520 5261c201 2018-04-01 stsp }
521 faf5b56f 2023-01-31 op memcpy(&ret->ref.ref.id, &ref->ref.ref.id,
522 faf5b56f 2023-01-31 op sizeof(ret->ref.ref.id));
523 5261c201 2018-04-01 stsp }
524 5261c201 2018-04-01 stsp
525 5261c201 2018-04-01 stsp return ret;
526 5261c201 2018-04-01 stsp }
527 b8bad2ba 2019-08-23 stsp
528 b8bad2ba 2019-08-23 stsp const struct got_error *
529 b8bad2ba 2019-08-23 stsp got_reflist_entry_dup(struct got_reflist_entry **newp,
530 b8bad2ba 2019-08-23 stsp struct got_reflist_entry *re)
531 b8bad2ba 2019-08-23 stsp {
532 b8bad2ba 2019-08-23 stsp const struct got_error *err = NULL;
533 b8bad2ba 2019-08-23 stsp struct got_reflist_entry *new;
534 b8bad2ba 2019-08-23 stsp
535 b8bad2ba 2019-08-23 stsp *newp = NULL;
536 b8bad2ba 2019-08-23 stsp
537 b8bad2ba 2019-08-23 stsp new = malloc(sizeof(*new));
538 b8bad2ba 2019-08-23 stsp if (new == NULL)
539 b8bad2ba 2019-08-23 stsp return got_error_from_errno("malloc");
540 5261c201 2018-04-01 stsp
541 b8bad2ba 2019-08-23 stsp new->ref = got_ref_dup(re->ref);
542 b8bad2ba 2019-08-23 stsp if (new->ref == NULL) {
543 b8bad2ba 2019-08-23 stsp err = got_error_from_errno("got_ref_dup");
544 b8bad2ba 2019-08-23 stsp free(new);
545 b8bad2ba 2019-08-23 stsp return err;
546 b8bad2ba 2019-08-23 stsp }
547 b8bad2ba 2019-08-23 stsp
548 b8bad2ba 2019-08-23 stsp *newp = new;
549 b8bad2ba 2019-08-23 stsp return NULL;
550 b8bad2ba 2019-08-23 stsp }
551 b8bad2ba 2019-08-23 stsp
552 cce2f485 2021-08-22 stsp const struct got_error *
553 cce2f485 2021-08-22 stsp got_ref_resolve_symbolic(struct got_reference **resolved,
554 5261c201 2018-04-01 stsp struct got_repository *repo, struct got_reference *ref)
555 5261c201 2018-04-01 stsp {
556 5261c201 2018-04-01 stsp struct got_reference *nextref;
557 5261c201 2018-04-01 stsp const struct got_error *err;
558 5261c201 2018-04-01 stsp
559 2f17228e 2019-05-12 stsp err = got_ref_open(&nextref, repo, ref->ref.symref.ref, 0);
560 5261c201 2018-04-01 stsp if (err)
561 5261c201 2018-04-01 stsp return err;
562 5261c201 2018-04-01 stsp
563 5261c201 2018-04-01 stsp if (nextref->flags & GOT_REF_IS_SYMBOLIC)
564 cce2f485 2021-08-22 stsp err = got_ref_resolve_symbolic(resolved, repo, nextref);
565 5261c201 2018-04-01 stsp else
566 5261c201 2018-04-01 stsp *resolved = got_ref_dup(nextref);
567 5261c201 2018-04-01 stsp
568 5261c201 2018-04-01 stsp got_ref_close(nextref);
569 5261c201 2018-04-01 stsp return err;
570 5261c201 2018-04-01 stsp }
571 5261c201 2018-04-01 stsp
572 29e86f7a 2019-08-12 stsp static const struct got_error *
573 29e86f7a 2019-08-12 stsp ref_resolve(struct got_object_id **id, struct got_repository *repo,
574 29e86f7a 2019-08-12 stsp struct got_reference *ref, int recursion)
575 5261c201 2018-04-01 stsp {
576 5261c201 2018-04-01 stsp const struct got_error *err;
577 5261c201 2018-04-01 stsp
578 29e86f7a 2019-08-12 stsp if (recursion <= 0)
579 29e86f7a 2019-08-12 stsp return got_error_msg(GOT_ERR_RECURSION,
580 29e86f7a 2019-08-12 stsp "reference recursion limit reached");
581 29e86f7a 2019-08-12 stsp
582 5261c201 2018-04-01 stsp if (ref->flags & GOT_REF_IS_SYMBOLIC) {
583 5261c201 2018-04-01 stsp struct got_reference *resolved = NULL;
584 cce2f485 2021-08-22 stsp err = got_ref_resolve_symbolic(&resolved, repo, ref);
585 5261c201 2018-04-01 stsp if (err == NULL)
586 29e86f7a 2019-08-12 stsp err = ref_resolve(id, repo, resolved, --recursion);
587 57b6f99a 2019-04-13 stsp if (resolved)
588 57b6f99a 2019-04-13 stsp got_ref_close(resolved);
589 5261c201 2018-04-01 stsp return err;
590 5261c201 2018-04-01 stsp }
591 5261c201 2018-04-01 stsp
592 5261c201 2018-04-01 stsp *id = calloc(1, sizeof(**id));
593 5261c201 2018-04-01 stsp if (*id == NULL)
594 638f9024 2019-05-13 stsp return got_error_from_errno("calloc");
595 faf5b56f 2023-01-31 op memcpy(*id, &ref->ref.ref.id, sizeof(**id));
596 5261c201 2018-04-01 stsp return NULL;
597 29e86f7a 2019-08-12 stsp }
598 29e86f7a 2019-08-12 stsp
599 29e86f7a 2019-08-12 stsp const struct got_error *
600 29e86f7a 2019-08-12 stsp got_ref_resolve(struct got_object_id **id, struct got_repository *repo,
601 29e86f7a 2019-08-12 stsp struct got_reference *ref)
602 29e86f7a 2019-08-12 stsp {
603 29e86f7a 2019-08-12 stsp return ref_resolve(id, repo, ref, GOT_REF_RECURSE_MAX);
604 5261c201 2018-04-01 stsp }
605 5261c201 2018-04-01 stsp
606 5261c201 2018-04-01 stsp char *
607 5261c201 2018-04-01 stsp got_ref_to_str(struct got_reference *ref)
608 5261c201 2018-04-01 stsp {
609 5261c201 2018-04-01 stsp char *str;
610 271d2a38 2018-12-25 stsp
611 271d2a38 2018-12-25 stsp if (ref->flags & GOT_REF_IS_SYMBOLIC)
612 271d2a38 2018-12-25 stsp return strdup(ref->ref.symref.ref);
613 271d2a38 2018-12-25 stsp
614 faf5b56f 2023-01-31 op if (got_object_id_str(&str, &ref->ref.ref.id) != NULL)
615 271d2a38 2018-12-25 stsp return NULL;
616 5261c201 2018-04-01 stsp
617 5261c201 2018-04-01 stsp return str;
618 5261c201 2018-04-01 stsp }
619 0bd18d37 2019-02-01 stsp
620 0bd18d37 2019-02-01 stsp const char *
621 0bd18d37 2019-02-01 stsp got_ref_get_name(struct got_reference *ref)
622 0bd18d37 2019-02-01 stsp {
623 0bd18d37 2019-02-01 stsp if (ref->flags & GOT_REF_IS_SYMBOLIC)
624 0bd18d37 2019-02-01 stsp return ref->ref.symref.name;
625 0bd18d37 2019-02-01 stsp
626 0bd18d37 2019-02-01 stsp return ref->ref.ref.name;
627 199a4027 2019-02-02 stsp }
628 199a4027 2019-02-02 stsp
629 aaf88317 2019-07-10 stsp const char *
630 aaf88317 2019-07-10 stsp got_ref_get_symref_target(struct got_reference *ref)
631 aaf88317 2019-07-10 stsp {
632 aaf88317 2019-07-10 stsp if (ref->flags & GOT_REF_IS_SYMBOLIC)
633 aaf88317 2019-07-10 stsp return ref->ref.symref.ref;
634 b8bad2ba 2019-08-23 stsp
635 b8bad2ba 2019-08-23 stsp return NULL;
636 3f338f0a 2021-07-27 stsp }
637 3f338f0a 2021-07-27 stsp
638 3f338f0a 2021-07-27 stsp time_t
639 3f338f0a 2021-07-27 stsp got_ref_get_mtime(struct got_reference *ref)
640 3f338f0a 2021-07-27 stsp {
641 3f338f0a 2021-07-27 stsp return ref->mtime;
642 b8bad2ba 2019-08-23 stsp }
643 b8bad2ba 2019-08-23 stsp
644 b8bad2ba 2019-08-23 stsp const struct got_error *
645 b8bad2ba 2019-08-23 stsp got_ref_cmp_by_name(void *arg, int *cmp, struct got_reference *re1,
646 b8bad2ba 2019-08-23 stsp struct got_reference* re2)
647 b8bad2ba 2019-08-23 stsp {
648 b8bad2ba 2019-08-23 stsp const char *name1 = got_ref_get_name(re1);
649 b8bad2ba 2019-08-23 stsp const char *name2 = got_ref_get_name(re2);
650 aaf88317 2019-07-10 stsp
651 b8bad2ba 2019-08-23 stsp *cmp = got_path_cmp(name1, name2, strlen(name1), strlen(name2));
652 aaf88317 2019-07-10 stsp return NULL;
653 d1f16636 2020-01-15 stsp }
654 d1f16636 2020-01-15 stsp
655 d1f16636 2020-01-15 stsp const struct got_error *
656 d1f16636 2020-01-15 stsp got_ref_cmp_tags(void *arg, int *cmp, struct got_reference *ref1,
657 d1f16636 2020-01-15 stsp struct got_reference *ref2)
658 d1f16636 2020-01-15 stsp {
659 d1f16636 2020-01-15 stsp const struct got_error *err = NULL;
660 d1f16636 2020-01-15 stsp struct got_repository *repo = arg;
661 d1f16636 2020-01-15 stsp struct got_object_id *id1, *id2 = NULL;
662 d1f16636 2020-01-15 stsp struct got_tag_object *tag1 = NULL, *tag2 = NULL;
663 d1f16636 2020-01-15 stsp struct got_commit_object *commit1 = NULL, *commit2 = NULL;
664 d1f16636 2020-01-15 stsp time_t time1, time2;
665 d1f16636 2020-01-15 stsp
666 d1f16636 2020-01-15 stsp *cmp = 0;
667 d1f16636 2020-01-15 stsp
668 d1f16636 2020-01-15 stsp err = got_ref_resolve(&id1, repo, ref1);
669 d1f16636 2020-01-15 stsp if (err)
670 d1f16636 2020-01-15 stsp return err;
671 d1f16636 2020-01-15 stsp err = got_object_open_as_tag(&tag1, repo, id1);
672 d1f16636 2020-01-15 stsp if (err) {
673 d1f16636 2020-01-15 stsp if (err->code != GOT_ERR_OBJ_TYPE)
674 d1f16636 2020-01-15 stsp goto done;
675 d1f16636 2020-01-15 stsp /* "lightweight" tag */
676 d1f16636 2020-01-15 stsp err = got_object_open_as_commit(&commit1, repo, id1);
677 d1f16636 2020-01-15 stsp if (err)
678 d1f16636 2020-01-15 stsp goto done;
679 d1f16636 2020-01-15 stsp time1 = got_object_commit_get_committer_time(commit1);
680 d1f16636 2020-01-15 stsp } else
681 d1f16636 2020-01-15 stsp time1 = got_object_tag_get_tagger_time(tag1);
682 d1f16636 2020-01-15 stsp
683 d1f16636 2020-01-15 stsp err = got_ref_resolve(&id2, repo, ref2);
684 d1f16636 2020-01-15 stsp if (err)
685 d1f16636 2020-01-15 stsp goto done;
686 d1f16636 2020-01-15 stsp err = got_object_open_as_tag(&tag2, repo, id2);
687 d1f16636 2020-01-15 stsp if (err) {
688 d1f16636 2020-01-15 stsp if (err->code != GOT_ERR_OBJ_TYPE)
689 d1f16636 2020-01-15 stsp goto done;
690 d1f16636 2020-01-15 stsp /* "lightweight" tag */
691 d1f16636 2020-01-15 stsp err = got_object_open_as_commit(&commit2, repo, id2);
692 d1f16636 2020-01-15 stsp if (err)
693 d1f16636 2020-01-15 stsp goto done;
694 d1f16636 2020-01-15 stsp time2 = got_object_commit_get_committer_time(commit2);
695 d1f16636 2020-01-15 stsp } else
696 d1f16636 2020-01-15 stsp time2 = got_object_tag_get_tagger_time(tag2);
697 d1f16636 2020-01-15 stsp
698 d1f16636 2020-01-15 stsp /* Put latest tags first. */
699 d1f16636 2020-01-15 stsp if (time1 < time2)
700 d1f16636 2020-01-15 stsp *cmp = 1;
701 d1f16636 2020-01-15 stsp else if (time1 > time2)
702 d1f16636 2020-01-15 stsp *cmp = -1;
703 d1f16636 2020-01-15 stsp else
704 d1f16636 2020-01-15 stsp err = got_ref_cmp_by_name(NULL, cmp, ref2, ref1);
705 d1f16636 2020-01-15 stsp done:
706 d1f16636 2020-01-15 stsp free(id1);
707 d1f16636 2020-01-15 stsp free(id2);
708 d1f16636 2020-01-15 stsp if (tag1)
709 d1f16636 2020-01-15 stsp got_object_tag_close(tag1);
710 d1f16636 2020-01-15 stsp if (tag2)
711 d1f16636 2020-01-15 stsp got_object_tag_close(tag2);
712 e600f124 2021-03-21 stsp if (commit1)
713 e600f124 2021-03-21 stsp got_object_commit_close(commit1);
714 e600f124 2021-03-21 stsp if (commit2)
715 e600f124 2021-03-21 stsp got_object_commit_close(commit2);
716 7f66531d 2021-11-16 stsp return err;
717 7f66531d 2021-11-16 stsp }
718 7f66531d 2021-11-16 stsp
719 7f66531d 2021-11-16 stsp static const struct got_error *
720 7f66531d 2021-11-16 stsp get_committer_time(struct got_reference *ref, struct got_repository *repo)
721 7f66531d 2021-11-16 stsp {
722 7f66531d 2021-11-16 stsp const struct got_error *err = NULL;
723 7f66531d 2021-11-16 stsp int obj_type;
724 7f66531d 2021-11-16 stsp struct got_commit_object *commit = NULL;
725 7f66531d 2021-11-16 stsp struct got_tag_object *tag = NULL;
726 7f66531d 2021-11-16 stsp struct got_object_id *id = NULL;
727 7f66531d 2021-11-16 stsp
728 7f66531d 2021-11-16 stsp err = got_ref_resolve(&id, repo, ref);
729 7f66531d 2021-11-16 stsp if (err)
730 7f66531d 2021-11-16 stsp return err;
731 7f66531d 2021-11-16 stsp
732 7f66531d 2021-11-16 stsp err = got_object_get_type(&obj_type, repo, id);
733 7f66531d 2021-11-16 stsp if (err)
734 7f66531d 2021-11-16 stsp goto done;
735 7f66531d 2021-11-16 stsp
736 7f66531d 2021-11-16 stsp switch (obj_type) {
737 7f66531d 2021-11-16 stsp case GOT_OBJ_TYPE_COMMIT:
738 7f66531d 2021-11-16 stsp err = got_object_open_as_commit(&commit, repo, id);
739 7f66531d 2021-11-16 stsp if (err)
740 7f66531d 2021-11-16 stsp goto done;
741 7f66531d 2021-11-16 stsp ref->committer_time =
742 7f66531d 2021-11-16 stsp got_object_commit_get_committer_time(commit);
743 7f66531d 2021-11-16 stsp break;
744 7f66531d 2021-11-16 stsp case GOT_OBJ_TYPE_TAG:
745 7f66531d 2021-11-16 stsp err = got_object_open_as_tag(&tag, repo, id);
746 7f66531d 2021-11-16 stsp if (err)
747 7f66531d 2021-11-16 stsp goto done;
748 7f66531d 2021-11-16 stsp ref->committer_time = got_object_tag_get_tagger_time(tag);
749 7f66531d 2021-11-16 stsp break;
750 7f66531d 2021-11-16 stsp default:
751 7f66531d 2021-11-16 stsp /* best effort for other object types */
752 7f66531d 2021-11-16 stsp ref->committer_time = got_ref_get_mtime(ref);
753 7f66531d 2021-11-16 stsp break;
754 7f66531d 2021-11-16 stsp }
755 7f66531d 2021-11-16 stsp done:
756 7f66531d 2021-11-16 stsp free(id);
757 7f66531d 2021-11-16 stsp if (commit)
758 7f66531d 2021-11-16 stsp got_object_commit_close(commit);
759 7f66531d 2021-11-16 stsp if (tag)
760 7f66531d 2021-11-16 stsp got_object_tag_close(tag);
761 e600f124 2021-03-21 stsp return err;
762 e600f124 2021-03-21 stsp }
763 e600f124 2021-03-21 stsp
764 e600f124 2021-03-21 stsp const struct got_error *
765 e600f124 2021-03-21 stsp got_ref_cmp_by_commit_timestamp_descending(void *arg, int *cmp,
766 e600f124 2021-03-21 stsp struct got_reference *ref1, struct got_reference *ref2)
767 e600f124 2021-03-21 stsp {
768 0309152a 2021-11-20 stsp const struct got_error *err = NULL;
769 e600f124 2021-03-21 stsp struct got_repository *repo = arg;
770 e600f124 2021-03-21 stsp
771 e600f124 2021-03-21 stsp *cmp = 0;
772 e600f124 2021-03-21 stsp
773 2c9e323b 2021-10-10 stsp if (ref1->committer_time == 0) {
774 7f66531d 2021-11-16 stsp err = get_committer_time(ref1, repo);
775 2c9e323b 2021-10-10 stsp if (err)
776 2c9e323b 2021-10-10 stsp return err;
777 2c9e323b 2021-10-10 stsp }
778 7f66531d 2021-11-16 stsp if (ref2->committer_time == 0) {
779 7f66531d 2021-11-16 stsp err = get_committer_time(ref2, repo);
780 2c9e323b 2021-10-10 stsp if (err)
781 2c9e323b 2021-10-10 stsp return err;
782 2c9e323b 2021-10-10 stsp }
783 2c9e323b 2021-10-10 stsp
784 2c9e323b 2021-10-10 stsp if (ref1->committer_time < ref2->committer_time)
785 e600f124 2021-03-21 stsp *cmp = 1;
786 2c9e323b 2021-10-10 stsp else if (ref2->committer_time < ref1->committer_time)
787 e600f124 2021-03-21 stsp *cmp = -1;
788 42864987 2021-11-20 stsp else
789 42864987 2021-11-20 stsp return got_ref_cmp_by_name(arg, cmp, ref1, ref2);
790 7f66531d 2021-11-16 stsp
791 d1f16636 2020-01-15 stsp return err;
792 aaf88317 2019-07-10 stsp }
793 aaf88317 2019-07-10 stsp
794 779e1159 2021-06-18 stsp const struct got_error *
795 c0df5966 2021-12-31 stsp got_reflist_insert(struct got_reflist_entry **newp,
796 c0df5966 2021-12-31 stsp struct got_reflist_head *refs, struct got_reference *ref,
797 c0df5966 2021-12-31 stsp got_ref_cmp_cb cmp_cb, void *cmp_arg)
798 199a4027 2019-02-02 stsp {
799 199a4027 2019-02-02 stsp const struct got_error *err;
800 d9dff0e5 2020-12-26 stsp struct got_reflist_entry *new, *re;
801 e397b6db 2019-02-04 stsp int cmp;
802 7a3c76f5 2019-02-05 stsp
803 505287be 2019-03-15 stsp *newp = NULL;
804 7a3c76f5 2019-02-05 stsp
805 3d8e0c5e 2022-09-05 stsp if (cmp_cb != got_ref_cmp_by_name && (ref->flags & GOT_REF_IS_PACKED)) {
806 7db2b0dd 2022-09-05 stsp /*
807 7db2b0dd 2022-09-05 stsp * If we are not sorting elements by name then we must still
808 7db2b0dd 2022-09-05 stsp * detect collisions between a packed ref and an on-disk ref
809 7db2b0dd 2022-09-05 stsp * using the same name. On-disk refs take precedence and are
810 7db2b0dd 2022-09-05 stsp * already present on the list before packed refs get added.
811 7db2b0dd 2022-09-05 stsp */
812 7db2b0dd 2022-09-05 stsp TAILQ_FOREACH(re, refs, entry) {
813 3d8e0c5e 2022-09-05 stsp err = got_ref_cmp_by_name(NULL, &cmp, re->ref, ref);
814 7db2b0dd 2022-09-05 stsp if (err)
815 7db2b0dd 2022-09-05 stsp return err;
816 3d8e0c5e 2022-09-05 stsp if (cmp == 0)
817 7db2b0dd 2022-09-05 stsp return NULL;
818 7db2b0dd 2022-09-05 stsp }
819 7db2b0dd 2022-09-05 stsp }
820 7db2b0dd 2022-09-05 stsp
821 3d8e0c5e 2022-09-05 stsp new = malloc(sizeof(*new));
822 3d8e0c5e 2022-09-05 stsp if (new == NULL)
823 3d8e0c5e 2022-09-05 stsp return got_error_from_errno("malloc");
824 3d8e0c5e 2022-09-05 stsp new->ref = ref;
825 3d8e0c5e 2022-09-05 stsp *newp = new;
826 3d8e0c5e 2022-09-05 stsp
827 29b5c214 2019-02-04 stsp /*
828 29b5c214 2019-02-04 stsp * We must de-duplicate entries on insert because packed-refs may
829 29b5c214 2019-02-04 stsp * contain redundant entries. On-disk refs take precedence.
830 29b5c214 2019-02-04 stsp * This code assumes that on-disk revs are read before packed-refs.
831 e397b6db 2019-02-04 stsp * We're iterating the list anyway, so insert elements sorted by name.
832 d9dff0e5 2020-12-26 stsp *
833 d9dff0e5 2020-12-26 stsp * Many callers will provide paths in a somewhat sorted order.
834 d9dff0e5 2020-12-26 stsp * Iterating backwards from the tail of the list should be more
835 d9dff0e5 2020-12-26 stsp * efficient than traversing through the entire list each time
836 d9dff0e5 2020-12-26 stsp * an element is inserted.
837 29b5c214 2019-02-04 stsp */
838 d9dff0e5 2020-12-26 stsp re = TAILQ_LAST(refs, got_reflist_head);
839 7a3c76f5 2019-02-05 stsp while (re) {
840 b8bad2ba 2019-08-23 stsp err = (*cmp_cb)(cmp_arg, &cmp, re->ref, new->ref);
841 b8bad2ba 2019-08-23 stsp if (err)
842 b8bad2ba 2019-08-23 stsp return err;
843 e397b6db 2019-02-04 stsp if (cmp == 0) {
844 27a1ed03 2019-03-15 stsp /* duplicate */
845 27a1ed03 2019-03-15 stsp free(new);
846 505287be 2019-03-15 stsp *newp = NULL;
847 7a3c76f5 2019-02-05 stsp return NULL;
848 d9dff0e5 2020-12-26 stsp } else if (cmp < 0) {
849 d9dff0e5 2020-12-26 stsp TAILQ_INSERT_AFTER(refs, re, new, entry);
850 7a3c76f5 2019-02-05 stsp return NULL;
851 7a3c76f5 2019-02-05 stsp }
852 d9dff0e5 2020-12-26 stsp re = TAILQ_PREV(re, got_reflist_head, entry);
853 29b5c214 2019-02-04 stsp }
854 199a4027 2019-02-02 stsp
855 d9dff0e5 2020-12-26 stsp TAILQ_INSERT_HEAD(refs, new, entry);
856 199a4027 2019-02-02 stsp return NULL;
857 0bd18d37 2019-02-01 stsp }
858 2d497592 2021-11-20 stsp
859 2d497592 2021-11-20 stsp const struct got_error *
860 2d497592 2021-11-20 stsp got_reflist_sort(struct got_reflist_head *refs,
861 2d497592 2021-11-20 stsp got_ref_cmp_cb cmp_cb, void *cmp_arg)
862 2d497592 2021-11-20 stsp {
863 2d497592 2021-11-20 stsp const struct got_error *err = NULL;
864 2d497592 2021-11-20 stsp struct got_reflist_entry *re, *tmp, *new;
865 2d497592 2021-11-20 stsp struct got_reflist_head sorted;
866 199a4027 2019-02-02 stsp
867 2d497592 2021-11-20 stsp TAILQ_INIT(&sorted);
868 2d497592 2021-11-20 stsp
869 2d497592 2021-11-20 stsp TAILQ_FOREACH_SAFE(re, refs, entry, tmp) {
870 2d497592 2021-11-20 stsp struct got_reference *ref = re->ref;
871 2d497592 2021-11-20 stsp TAILQ_REMOVE(refs, re, entry);
872 2d497592 2021-11-20 stsp free(re);
873 2d497592 2021-11-20 stsp err = got_reflist_insert(&new, &sorted, ref, cmp_cb, cmp_arg);
874 2d497592 2021-11-20 stsp if (err || new == NULL /* duplicate */)
875 2d497592 2021-11-20 stsp got_ref_close(ref);
876 2d497592 2021-11-20 stsp if (err)
877 2d497592 2021-11-20 stsp return err;
878 2d497592 2021-11-20 stsp }
879 2d497592 2021-11-20 stsp
880 2d497592 2021-11-20 stsp TAILQ_CONCAT(refs, &sorted, entry);
881 2d497592 2021-11-20 stsp return NULL;
882 2d497592 2021-11-20 stsp }
883 2d497592 2021-11-20 stsp
884 a04f49d2 2019-02-04 stsp static const struct got_error *
885 29b5c214 2019-02-04 stsp gather_on_disk_refs(struct got_reflist_head *refs, const char *path_refs,
886 b8bad2ba 2019-08-23 stsp const char *subdir, struct got_repository *repo,
887 b8bad2ba 2019-08-23 stsp got_ref_cmp_cb cmp_cb, void *cmp_arg)
888 a04f49d2 2019-02-04 stsp {
889 a04f49d2 2019-02-04 stsp const struct got_error *err = NULL;
890 a04f49d2 2019-02-04 stsp DIR *d = NULL;
891 a04f49d2 2019-02-04 stsp char *path_subdir;
892 b2070a3f 2020-03-22 stsp
893 b2070a3f 2020-03-22 stsp while (subdir[0] == '/')
894 b2070a3f 2020-03-22 stsp subdir++;
895 a04f49d2 2019-02-04 stsp
896 a04f49d2 2019-02-04 stsp if (asprintf(&path_subdir, "%s/%s", path_refs, subdir) == -1)
897 638f9024 2019-05-13 stsp return got_error_from_errno("asprintf");
898 a04f49d2 2019-02-04 stsp
899 a04f49d2 2019-02-04 stsp d = opendir(path_subdir);
900 a04f49d2 2019-02-04 stsp if (d == NULL)
901 a04f49d2 2019-02-04 stsp goto done;
902 a04f49d2 2019-02-04 stsp
903 656b1f76 2019-05-11 jcs for (;;) {
904 a04f49d2 2019-02-04 stsp struct dirent *dent;
905 a04f49d2 2019-02-04 stsp struct got_reference *ref;
906 a04f49d2 2019-02-04 stsp char *child;
907 20ccae39 2020-07-21 stsp int type;
908 a04f49d2 2019-02-04 stsp
909 a04f49d2 2019-02-04 stsp dent = readdir(d);
910 a04f49d2 2019-02-04 stsp if (dent == NULL)
911 a04f49d2 2019-02-04 stsp break;
912 a04f49d2 2019-02-04 stsp
913 a04f49d2 2019-02-04 stsp if (strcmp(dent->d_name, ".") == 0 ||
914 a04f49d2 2019-02-04 stsp strcmp(dent->d_name, "..") == 0)
915 a04f49d2 2019-02-04 stsp continue;
916 a04f49d2 2019-02-04 stsp
917 20ccae39 2020-07-21 stsp err = got_path_dirent_type(&type, path_subdir, dent);
918 20ccae39 2020-07-21 stsp if (err)
919 20ccae39 2020-07-21 stsp break;
920 20ccae39 2020-07-21 stsp
921 20ccae39 2020-07-21 stsp switch (type) {
922 a04f49d2 2019-02-04 stsp case DT_REG:
923 2f17228e 2019-05-12 stsp err = open_ref(&ref, path_refs, subdir, dent->d_name,
924 2f17228e 2019-05-12 stsp 0);
925 1e37702e 2019-02-04 stsp if (err)
926 a04f49d2 2019-02-04 stsp goto done;
927 a04f49d2 2019-02-04 stsp if (ref) {
928 505287be 2019-03-15 stsp struct got_reflist_entry *new;
929 72acb3d8 2021-08-06 stsp err = got_reflist_insert(&new, refs, ref,
930 b8bad2ba 2019-08-23 stsp cmp_cb, cmp_arg);
931 505287be 2019-03-15 stsp if (err || new == NULL /* duplicate */)
932 505287be 2019-03-15 stsp got_ref_close(ref);
933 a04f49d2 2019-02-04 stsp if (err)
934 a04f49d2 2019-02-04 stsp goto done;
935 a04f49d2 2019-02-04 stsp }
936 a04f49d2 2019-02-04 stsp break;
937 a04f49d2 2019-02-04 stsp case DT_DIR:
938 a04f49d2 2019-02-04 stsp if (asprintf(&child, "%s%s%s", subdir,
939 a04f49d2 2019-02-04 stsp subdir[0] == '\0' ? "" : "/", dent->d_name) == -1) {
940 638f9024 2019-05-13 stsp err = got_error_from_errno("asprintf");
941 a04f49d2 2019-02-04 stsp break;
942 a04f49d2 2019-02-04 stsp }
943 b8bad2ba 2019-08-23 stsp err = gather_on_disk_refs(refs, path_refs, child, repo,
944 b8bad2ba 2019-08-23 stsp cmp_cb, cmp_arg);
945 a04f49d2 2019-02-04 stsp free(child);
946 a04f49d2 2019-02-04 stsp break;
947 a04f49d2 2019-02-04 stsp default:
948 a04f49d2 2019-02-04 stsp break;
949 a04f49d2 2019-02-04 stsp }
950 a04f49d2 2019-02-04 stsp }
951 a04f49d2 2019-02-04 stsp done:
952 a04f49d2 2019-02-04 stsp if (d)
953 a04f49d2 2019-02-04 stsp closedir(d);
954 a04f49d2 2019-02-04 stsp free(path_subdir);
955 a04f49d2 2019-02-04 stsp return err;
956 a04f49d2 2019-02-04 stsp }
957 a04f49d2 2019-02-04 stsp
958 199a4027 2019-02-02 stsp const struct got_error *
959 29606af7 2019-08-23 stsp got_ref_list(struct got_reflist_head *refs, struct got_repository *repo,
960 b8bad2ba 2019-08-23 stsp const char *ref_namespace, got_ref_cmp_cb cmp_cb, void *cmp_arg)
961 199a4027 2019-02-02 stsp {
962 199a4027 2019-02-02 stsp const struct got_error *err;
963 c3821bef 2022-07-21 florian char *packed_refs_path = NULL, *path_refs = NULL;
964 58e31a80 2022-06-27 op char *abs_namespace = NULL, *buf = NULL;
965 58e31a80 2022-06-27 op const char *ondisk_ref_namespace = NULL;
966 9bdd68dd 2020-01-02 naddy char *line = NULL;
967 29b5c214 2019-02-04 stsp FILE *f = NULL;
968 199a4027 2019-02-02 stsp struct got_reference *ref;
969 505287be 2019-03-15 stsp struct got_reflist_entry *new;
970 199a4027 2019-02-02 stsp
971 29606af7 2019-08-23 stsp if (ref_namespace == NULL || ref_namespace[0] == '\0') {
972 29606af7 2019-08-23 stsp path_refs = get_refs_dir_path(repo, GOT_REF_HEAD);
973 29606af7 2019-08-23 stsp if (path_refs == NULL) {
974 29606af7 2019-08-23 stsp err = got_error_from_errno("get_refs_dir_path");
975 29606af7 2019-08-23 stsp goto done;
976 29606af7 2019-08-23 stsp }
977 29606af7 2019-08-23 stsp err = open_ref(&ref, path_refs, "", GOT_REF_HEAD, 0);
978 29606af7 2019-08-23 stsp if (err)
979 29606af7 2019-08-23 stsp goto done;
980 72acb3d8 2021-08-06 stsp err = got_reflist_insert(&new, refs, ref, cmp_cb, cmp_arg);
981 29606af7 2019-08-23 stsp if (err || new == NULL /* duplicate */)
982 29606af7 2019-08-23 stsp got_ref_close(ref);
983 f68a7890 2020-03-19 stsp if (err && err->code != GOT_ERR_NOT_REF)
984 29606af7 2019-08-23 stsp goto done;
985 b2070a3f 2020-03-22 stsp } else {
986 b2070a3f 2020-03-22 stsp /* Try listing a single reference. */
987 b2070a3f 2020-03-22 stsp const char *refname = ref_namespace;
988 b2070a3f 2020-03-22 stsp path_refs = get_refs_dir_path(repo, refname);
989 b2070a3f 2020-03-22 stsp if (path_refs == NULL) {
990 b2070a3f 2020-03-22 stsp err = got_error_from_errno("get_refs_dir_path");
991 b2070a3f 2020-03-22 stsp goto done;
992 b2070a3f 2020-03-22 stsp }
993 b2070a3f 2020-03-22 stsp err = open_ref(&ref, path_refs, "", refname, 0);
994 b2070a3f 2020-03-22 stsp if (err) {
995 b2070a3f 2020-03-22 stsp if (err->code != GOT_ERR_NOT_REF)
996 b2070a3f 2020-03-22 stsp goto done;
997 b2070a3f 2020-03-22 stsp /* Try to look up references in a given namespace. */
998 b2070a3f 2020-03-22 stsp } else {
999 72acb3d8 2021-08-06 stsp err = got_reflist_insert(&new, refs, ref,
1000 b2070a3f 2020-03-22 stsp cmp_cb, cmp_arg);
1001 b2070a3f 2020-03-22 stsp if (err || new == NULL /* duplicate */)
1002 b2070a3f 2020-03-22 stsp got_ref_close(ref);
1003 b2070a3f 2020-03-22 stsp return err;
1004 b2070a3f 2020-03-22 stsp }
1005 29b5c214 2019-02-04 stsp }
1006 29b5c214 2019-02-04 stsp
1007 b2070a3f 2020-03-22 stsp if (ref_namespace) {
1008 b2070a3f 2020-03-22 stsp size_t len;
1009 b2070a3f 2020-03-22 stsp /* Canonicalize the path to eliminate double-slashes if any. */
1010 b2070a3f 2020-03-22 stsp if (asprintf(&abs_namespace, "/%s", ref_namespace) == -1) {
1011 b2070a3f 2020-03-22 stsp err = got_error_from_errno("asprintf");
1012 b2070a3f 2020-03-22 stsp goto done;
1013 b2070a3f 2020-03-22 stsp }
1014 b2070a3f 2020-03-22 stsp len = strlen(abs_namespace) + 1;
1015 b2070a3f 2020-03-22 stsp buf = malloc(len);
1016 b2070a3f 2020-03-22 stsp if (buf == NULL) {
1017 b2070a3f 2020-03-22 stsp err = got_error_from_errno("malloc");
1018 b2070a3f 2020-03-22 stsp goto done;
1019 b2070a3f 2020-03-22 stsp }
1020 b2070a3f 2020-03-22 stsp err = got_canonpath(abs_namespace, buf, len);
1021 b2070a3f 2020-03-22 stsp if (err)
1022 b2070a3f 2020-03-22 stsp goto done;
1023 b2070a3f 2020-03-22 stsp ondisk_ref_namespace = buf;
1024 b2070a3f 2020-03-22 stsp while (ondisk_ref_namespace[0] == '/')
1025 b2070a3f 2020-03-22 stsp ondisk_ref_namespace++;
1026 b2070a3f 2020-03-22 stsp if (strncmp(ondisk_ref_namespace, "refs/", 5) == 0)
1027 b2070a3f 2020-03-22 stsp ondisk_ref_namespace += 5;
1028 b2070a3f 2020-03-22 stsp else if (strcmp(ondisk_ref_namespace, "refs") == 0)
1029 b2070a3f 2020-03-22 stsp ondisk_ref_namespace = "";
1030 b2070a3f 2020-03-22 stsp }
1031 29606af7 2019-08-23 stsp
1032 29b5c214 2019-02-04 stsp /* Gather on-disk refs before parsing packed-refs. */
1033 29b5c214 2019-02-04 stsp free(path_refs);
1034 29b5c214 2019-02-04 stsp path_refs = get_refs_dir_path(repo, "");
1035 29b5c214 2019-02-04 stsp if (path_refs == NULL) {
1036 638f9024 2019-05-13 stsp err = got_error_from_errno("get_refs_dir_path");
1037 29b5c214 2019-02-04 stsp goto done;
1038 29b5c214 2019-02-04 stsp }
1039 29606af7 2019-08-23 stsp err = gather_on_disk_refs(refs, path_refs,
1040 6aeab596 2019-08-28 stsp ondisk_ref_namespace ? ondisk_ref_namespace : "", repo,
1041 6aeab596 2019-08-28 stsp cmp_cb, cmp_arg);
1042 29b5c214 2019-02-04 stsp if (err)
1043 29b5c214 2019-02-04 stsp goto done;
1044 29b5c214 2019-02-04 stsp
1045 29b5c214 2019-02-04 stsp /*
1046 29b5c214 2019-02-04 stsp * The packed-refs file may contain redundant entries, in which
1047 29b5c214 2019-02-04 stsp * case on-disk refs take precedence.
1048 29b5c214 2019-02-04 stsp */
1049 199a4027 2019-02-02 stsp packed_refs_path = got_repo_get_path_packed_refs(repo);
1050 29b5c214 2019-02-04 stsp if (packed_refs_path == NULL) {
1051 638f9024 2019-05-13 stsp err = got_error_from_errno("got_repo_get_path_packed_refs");
1052 29b5c214 2019-02-04 stsp goto done;
1053 29b5c214 2019-02-04 stsp }
1054 199a4027 2019-02-02 stsp
1055 00fe21f2 2021-12-31 stsp f = fopen(packed_refs_path, "re");
1056 199a4027 2019-02-02 stsp if (f) {
1057 7a90b680 2020-01-02 naddy size_t linesize = 0;
1058 9bdd68dd 2020-01-02 naddy ssize_t linelen;
1059 3f338f0a 2021-07-27 stsp struct stat sb;
1060 3f338f0a 2021-07-27 stsp
1061 3f338f0a 2021-07-27 stsp if (fstat(fileno(f), &sb) == -1) {
1062 3f338f0a 2021-07-27 stsp err = got_error_from_errno2("fstat", packed_refs_path);
1063 3f338f0a 2021-07-27 stsp goto done;
1064 3f338f0a 2021-07-27 stsp }
1065 656b1f76 2019-05-11 jcs for (;;) {
1066 9bdd68dd 2020-01-02 naddy linelen = getline(&line, &linesize, f);
1067 9bdd68dd 2020-01-02 naddy if (linelen == -1) {
1068 0bb4abae 2019-03-15 stsp if (feof(f))
1069 0bb4abae 2019-03-15 stsp break;
1070 0bb4abae 2019-03-15 stsp err = got_ferror(f, GOT_ERR_BAD_REF_DATA);
1071 0bb4abae 2019-03-15 stsp goto done;
1072 0bb4abae 2019-03-15 stsp }
1073 9bdd68dd 2020-01-02 naddy if (linelen > 0 && line[linelen - 1] == '\n')
1074 9bdd68dd 2020-01-02 naddy line[linelen - 1] = '\0';
1075 3f338f0a 2021-07-27 stsp err = parse_packed_ref_line(&ref, NULL, line,
1076 3f338f0a 2021-07-27 stsp sb.st_mtime);
1077 199a4027 2019-02-02 stsp if (err)
1078 199a4027 2019-02-02 stsp goto done;
1079 76b4ead2 2019-02-03 stsp if (ref) {
1080 29606af7 2019-08-23 stsp if (ref_namespace) {
1081 29606af7 2019-08-23 stsp const char *name;
1082 29606af7 2019-08-23 stsp name = got_ref_get_name(ref);
1083 b2070a3f 2020-03-22 stsp if (!got_path_is_child(name,
1084 b2070a3f 2020-03-22 stsp ref_namespace,
1085 b2070a3f 2020-03-22 stsp strlen(ref_namespace))) {
1086 29606af7 2019-08-23 stsp got_ref_close(ref);
1087 29606af7 2019-08-23 stsp continue;
1088 29606af7 2019-08-23 stsp }
1089 29606af7 2019-08-23 stsp }
1090 72acb3d8 2021-08-06 stsp err = got_reflist_insert(&new, refs, ref,
1091 b8bad2ba 2019-08-23 stsp cmp_cb, cmp_arg);
1092 505287be 2019-03-15 stsp if (err || new == NULL /* duplicate */)
1093 505287be 2019-03-15 stsp got_ref_close(ref);
1094 76b4ead2 2019-02-03 stsp if (err)
1095 76b4ead2 2019-02-03 stsp goto done;
1096 76b4ead2 2019-02-03 stsp }
1097 199a4027 2019-02-02 stsp }
1098 199a4027 2019-02-02 stsp }
1099 199a4027 2019-02-02 stsp done:
1100 c3821bef 2022-07-21 florian free(packed_refs_path);
1101 b2070a3f 2020-03-22 stsp free(abs_namespace);
1102 b2070a3f 2020-03-22 stsp free(buf);
1103 9bdd68dd 2020-01-02 naddy free(line);
1104 a04f49d2 2019-02-04 stsp free(path_refs);
1105 56b63ca4 2021-01-22 stsp if (f && fclose(f) == EOF && err == NULL)
1106 638f9024 2019-05-13 stsp err = got_error_from_errno("fclose");
1107 199a4027 2019-02-02 stsp return err;
1108 199a4027 2019-02-02 stsp }
1109 9e672c74 2019-03-11 stsp
1110 e2e879a0 2019-03-11 stsp void
1111 e2e879a0 2019-03-11 stsp got_ref_list_free(struct got_reflist_head *refs)
1112 e2e879a0 2019-03-11 stsp {
1113 e2e879a0 2019-03-11 stsp struct got_reflist_entry *re;
1114 e2e879a0 2019-03-11 stsp
1115 d9dff0e5 2020-12-26 stsp while ((re = TAILQ_FIRST(refs))) {
1116 d9dff0e5 2020-12-26 stsp TAILQ_REMOVE(refs, re, entry);
1117 af8a5c4a 2021-05-21 stsp got_ref_close(re->ref);
1118 e2e879a0 2019-03-11 stsp free(re);
1119 e2e879a0 2019-03-11 stsp }
1120 b249b824 2019-05-09 stsp }
1121 b249b824 2019-05-09 stsp
1122 b249b824 2019-05-09 stsp int
1123 b249b824 2019-05-09 stsp got_ref_is_symbolic(struct got_reference *ref)
1124 b249b824 2019-05-09 stsp {
1125 b249b824 2019-05-09 stsp return (ref->flags & GOT_REF_IS_SYMBOLIC);
1126 b249b824 2019-05-09 stsp }
1127 b249b824 2019-05-09 stsp
1128 b249b824 2019-05-09 stsp const struct got_error *
1129 b249b824 2019-05-09 stsp got_ref_change_ref(struct got_reference *ref, struct got_object_id *id)
1130 b249b824 2019-05-09 stsp {
1131 b249b824 2019-05-09 stsp if (ref->flags & GOT_REF_IS_SYMBOLIC)
1132 b249b824 2019-05-09 stsp return got_error(GOT_ERR_BAD_REF_TYPE);
1133 e2e879a0 2019-03-11 stsp
1134 faf5b56f 2023-01-31 op memcpy(&ref->ref.ref.id, id, sizeof(ref->ref.ref.id));
1135 b249b824 2019-05-09 stsp return NULL;
1136 e2e879a0 2019-03-11 stsp }
1137 e2e879a0 2019-03-11 stsp
1138 9e672c74 2019-03-11 stsp const struct got_error *
1139 d7b899ab 2020-03-25 stsp got_ref_change_symref(struct got_reference *ref, const char *refname)
1140 b249b824 2019-05-09 stsp {
1141 b249b824 2019-05-09 stsp char *new_name;
1142 b249b824 2019-05-09 stsp
1143 b249b824 2019-05-09 stsp if ((ref->flags & GOT_REF_IS_SYMBOLIC) == 0)
1144 b249b824 2019-05-09 stsp return got_error(GOT_ERR_BAD_REF_TYPE);
1145 b249b824 2019-05-09 stsp
1146 b249b824 2019-05-09 stsp new_name = strdup(refname);
1147 b249b824 2019-05-09 stsp if (new_name == NULL)
1148 638f9024 2019-05-13 stsp return got_error_from_errno("strdup");
1149 b249b824 2019-05-09 stsp
1150 d7b899ab 2020-03-25 stsp free(ref->ref.symref.ref);
1151 d7b899ab 2020-03-25 stsp ref->ref.symref.ref = new_name;
1152 b249b824 2019-05-09 stsp return NULL;
1153 b249b824 2019-05-09 stsp }
1154 b249b824 2019-05-09 stsp
1155 b249b824 2019-05-09 stsp const struct got_error *
1156 e8a967e0 2020-03-21 stsp got_ref_change_symref_to_ref(struct got_reference *symref,
1157 e8a967e0 2020-03-21 stsp struct got_object_id *id)
1158 e8a967e0 2020-03-21 stsp {
1159 e8a967e0 2020-03-21 stsp if ((symref->flags & GOT_REF_IS_SYMBOLIC) == 0)
1160 e8a967e0 2020-03-21 stsp return got_error(GOT_ERR_BAD_REF_TYPE);
1161 e8a967e0 2020-03-21 stsp
1162 e8a967e0 2020-03-21 stsp symref->ref.ref.name = symref->ref.symref.name;
1163 faf5b56f 2023-01-31 op memcpy(&symref->ref.ref.id, id, sizeof(symref->ref.ref.id));
1164 e8a967e0 2020-03-21 stsp symref->flags &= ~GOT_REF_IS_SYMBOLIC;
1165 e8a967e0 2020-03-21 stsp return NULL;
1166 e8a967e0 2020-03-21 stsp }
1167 e8a967e0 2020-03-21 stsp
1168 e8a967e0 2020-03-21 stsp const struct got_error *
1169 9e672c74 2019-03-11 stsp got_ref_write(struct got_reference *ref, struct got_repository *repo)
1170 9e672c74 2019-03-11 stsp {
1171 9e672c74 2019-03-11 stsp const struct got_error *err = NULL, *unlock_err = NULL;
1172 9e672c74 2019-03-11 stsp const char *name = got_ref_get_name(ref);
1173 9e672c74 2019-03-11 stsp char *path_refs = NULL, *path = NULL, *tmppath = NULL;
1174 9e672c74 2019-03-11 stsp struct got_lockfile *lf = NULL;
1175 9e672c74 2019-03-11 stsp FILE *f = NULL;
1176 9e672c74 2019-03-11 stsp size_t n;
1177 9e672c74 2019-03-11 stsp struct stat sb;
1178 9e672c74 2019-03-11 stsp
1179 9e672c74 2019-03-11 stsp path_refs = get_refs_dir_path(repo, name);
1180 9e672c74 2019-03-11 stsp if (path_refs == NULL) {
1181 638f9024 2019-05-13 stsp err = got_error_from_errno2("get_refs_dir_path", name);
1182 9e672c74 2019-03-11 stsp goto done;
1183 9e672c74 2019-03-11 stsp }
1184 9e672c74 2019-03-11 stsp
1185 9e672c74 2019-03-11 stsp if (asprintf(&path, "%s/%s", path_refs, name) == -1) {
1186 638f9024 2019-05-13 stsp err = got_error_from_errno("asprintf");
1187 9e672c74 2019-03-11 stsp goto done;
1188 9e672c74 2019-03-11 stsp }
1189 9e672c74 2019-03-11 stsp
1190 b90054ed 2022-11-01 stsp err = got_opentemp_named(&tmppath, &f, path, "");
1191 49c7094f 2019-03-11 stsp if (err) {
1192 d1667f0d 2019-03-11 stsp char *parent;
1193 49c7094f 2019-03-11 stsp if (!(err->code == GOT_ERR_ERRNO && errno == ENOENT))
1194 5e1c9f23 2019-03-11 stsp goto done;
1195 d1667f0d 2019-03-11 stsp err = got_path_dirname(&parent, path);
1196 d1667f0d 2019-03-11 stsp if (err)
1197 0cd1c46a 2019-03-11 stsp goto done;
1198 0cd1c46a 2019-03-11 stsp err = got_path_mkdir(parent);
1199 5e1c9f23 2019-03-11 stsp free(parent);
1200 0cd1c46a 2019-03-11 stsp if (err)
1201 0cd1c46a 2019-03-11 stsp goto done;
1202 b90054ed 2022-11-01 stsp err = got_opentemp_named(&tmppath, &f, path, "");
1203 49c7094f 2019-03-11 stsp if (err)
1204 0cd1c46a 2019-03-11 stsp goto done;
1205 9e672c74 2019-03-11 stsp }
1206 9e672c74 2019-03-11 stsp
1207 9e672c74 2019-03-11 stsp if (ref->flags & GOT_REF_IS_SYMBOLIC) {
1208 9e672c74 2019-03-11 stsp n = fprintf(f, "ref: %s\n", ref->ref.symref.ref);
1209 9e672c74 2019-03-11 stsp if (n != strlen(ref->ref.symref.ref) + 6) {
1210 9e672c74 2019-03-11 stsp err = got_ferror(f, GOT_ERR_IO);
1211 9e672c74 2019-03-11 stsp goto done;
1212 9e672c74 2019-03-11 stsp }
1213 9e672c74 2019-03-11 stsp } else {
1214 faf5b56f 2023-01-31 op char *hex;
1215 faf5b56f 2023-01-31 op size_t len;
1216 faf5b56f 2023-01-31 op
1217 faf5b56f 2023-01-31 op err = got_object_id_str(&hex, &ref->ref.ref.id);
1218 faf5b56f 2023-01-31 op if (err)
1219 faf5b56f 2023-01-31 op goto done;
1220 faf5b56f 2023-01-31 op len = strlen(hex);
1221 9e672c74 2019-03-11 stsp n = fprintf(f, "%s\n", hex);
1222 faf5b56f 2023-01-31 op free(hex);
1223 faf5b56f 2023-01-31 op if (n != len + 1) {
1224 9e672c74 2019-03-11 stsp err = got_ferror(f, GOT_ERR_IO);
1225 9e672c74 2019-03-11 stsp goto done;
1226 9e672c74 2019-03-11 stsp }
1227 9e672c74 2019-03-11 stsp }
1228 9e672c74 2019-03-11 stsp
1229 2f17228e 2019-05-12 stsp if (ref->lf == NULL) {
1230 5345b4c7 2021-07-06 stsp err = got_lockfile_lock(&lf, path, -1);
1231 2f17228e 2019-05-12 stsp if (err)
1232 2f17228e 2019-05-12 stsp goto done;
1233 2f17228e 2019-05-12 stsp }
1234 9e672c74 2019-03-11 stsp
1235 9e672c74 2019-03-11 stsp /* XXX: check if old content matches our expectations? */
1236 9e672c74 2019-03-11 stsp
1237 0cd1c46a 2019-03-11 stsp if (stat(path, &sb) != 0) {
1238 0cd1c46a 2019-03-11 stsp if (errno != ENOENT) {
1239 638f9024 2019-05-13 stsp err = got_error_from_errno2("stat", path);
1240 0cd1c46a 2019-03-11 stsp goto done;
1241 0cd1c46a 2019-03-11 stsp }
1242 0cd1c46a 2019-03-11 stsp sb.st_mode = GOT_DEFAULT_FILE_MODE;
1243 3818e3c4 2020-11-01 naddy }
1244 3818e3c4 2020-11-01 naddy
1245 3818e3c4 2020-11-01 naddy if (fchmod(fileno(f), sb.st_mode) != 0) {
1246 3818e3c4 2020-11-01 naddy err = got_error_from_errno2("fchmod", tmppath);
1247 3818e3c4 2020-11-01 naddy goto done;
1248 9e672c74 2019-03-11 stsp }
1249 9e672c74 2019-03-11 stsp
1250 9e672c74 2019-03-11 stsp if (rename(tmppath, path) != 0) {
1251 638f9024 2019-05-13 stsp err = got_error_from_errno3("rename", tmppath, path);
1252 9e672c74 2019-03-11 stsp goto done;
1253 9e672c74 2019-03-11 stsp }
1254 9e672c74 2019-03-11 stsp free(tmppath);
1255 9e672c74 2019-03-11 stsp tmppath = NULL;
1256 3f338f0a 2021-07-27 stsp
1257 3f338f0a 2021-07-27 stsp if (stat(path, &sb) == -1) {
1258 3f338f0a 2021-07-27 stsp err = got_error_from_errno2("stat", path);
1259 3f338f0a 2021-07-27 stsp goto done;
1260 3f338f0a 2021-07-27 stsp }
1261 3f338f0a 2021-07-27 stsp ref->mtime = sb.st_mtime;
1262 9e672c74 2019-03-11 stsp done:
1263 2f17228e 2019-05-12 stsp if (ref->lf == NULL && lf)
1264 5345b4c7 2021-07-06 stsp unlock_err = got_lockfile_unlock(lf, -1);
1265 9e672c74 2019-03-11 stsp if (f) {
1266 56b63ca4 2021-01-22 stsp if (fclose(f) == EOF && err == NULL)
1267 638f9024 2019-05-13 stsp err = got_error_from_errno("fclose");
1268 9e672c74 2019-03-11 stsp }
1269 9e672c74 2019-03-11 stsp free(path_refs);
1270 9e672c74 2019-03-11 stsp free(path);
1271 9e672c74 2019-03-11 stsp if (tmppath) {
1272 a06ca3f7 2022-10-15 stsp if (unlink(tmppath) == -1 && err == NULL)
1273 638f9024 2019-05-13 stsp err = got_error_from_errno2("unlink", tmppath);
1274 9e672c74 2019-03-11 stsp free(tmppath);
1275 2d2e1378 2019-03-11 stsp }
1276 2d2e1378 2019-03-11 stsp return err ? err : unlock_err;
1277 2d2e1378 2019-03-11 stsp }
1278 598a8b91 2019-03-15 stsp
1279 598a8b91 2019-03-15 stsp static const struct got_error *
1280 598a8b91 2019-03-15 stsp delete_packed_ref(struct got_reference *delref, struct got_repository *repo)
1281 598a8b91 2019-03-15 stsp {
1282 598a8b91 2019-03-15 stsp const struct got_error *err = NULL, *unlock_err = NULL;
1283 598a8b91 2019-03-15 stsp struct got_lockfile *lf = NULL;
1284 598a8b91 2019-03-15 stsp FILE *f = NULL, *tmpf = NULL;
1285 9bdd68dd 2020-01-02 naddy char *line = NULL, *packed_refs_path, *tmppath = NULL;
1286 7a90b680 2020-01-02 naddy size_t linesize = 0;
1287 598a8b91 2019-03-15 stsp struct got_reflist_head refs;
1288 598a8b91 2019-03-15 stsp int found_delref = 0;
1289 2d2e1378 2019-03-11 stsp
1290 598a8b91 2019-03-15 stsp /* The packed-refs file does not cotain symbolic references. */
1291 598a8b91 2019-03-15 stsp if (delref->flags & GOT_REF_IS_SYMBOLIC)
1292 598a8b91 2019-03-15 stsp return got_error(GOT_ERR_BAD_REF_DATA);
1293 598a8b91 2019-03-15 stsp
1294 d9dff0e5 2020-12-26 stsp TAILQ_INIT(&refs);
1295 598a8b91 2019-03-15 stsp
1296 598a8b91 2019-03-15 stsp packed_refs_path = got_repo_get_path_packed_refs(repo);
1297 598a8b91 2019-03-15 stsp if (packed_refs_path == NULL)
1298 638f9024 2019-05-13 stsp return got_error_from_errno("got_repo_get_path_packed_refs");
1299 598a8b91 2019-03-15 stsp
1300 b90054ed 2022-11-01 stsp err = got_opentemp_named(&tmppath, &tmpf, packed_refs_path, "");
1301 598a8b91 2019-03-15 stsp if (err)
1302 598a8b91 2019-03-15 stsp goto done;
1303 598a8b91 2019-03-15 stsp
1304 2f17228e 2019-05-12 stsp if (delref->lf == NULL) {
1305 5345b4c7 2021-07-06 stsp err = got_lockfile_lock(&lf, packed_refs_path, -1);
1306 2f17228e 2019-05-12 stsp if (err)
1307 2f17228e 2019-05-12 stsp goto done;
1308 2f17228e 2019-05-12 stsp }
1309 598a8b91 2019-03-15 stsp
1310 00fe21f2 2021-12-31 stsp f = fopen(packed_refs_path, "re");
1311 598a8b91 2019-03-15 stsp if (f == NULL) {
1312 638f9024 2019-05-13 stsp err = got_error_from_errno2("fopen", packed_refs_path);
1313 598a8b91 2019-03-15 stsp goto done;
1314 598a8b91 2019-03-15 stsp }
1315 656b1f76 2019-05-11 jcs for (;;) {
1316 9bdd68dd 2020-01-02 naddy ssize_t linelen;
1317 598a8b91 2019-03-15 stsp struct got_reference *ref;
1318 598a8b91 2019-03-15 stsp struct got_reflist_entry *new;
1319 598a8b91 2019-03-15 stsp
1320 9bdd68dd 2020-01-02 naddy linelen = getline(&line, &linesize, f);
1321 9bdd68dd 2020-01-02 naddy if (linelen == -1) {
1322 598a8b91 2019-03-15 stsp if (feof(f))
1323 598a8b91 2019-03-15 stsp break;
1324 598a8b91 2019-03-15 stsp err = got_ferror(f, GOT_ERR_BAD_REF_DATA);
1325 598a8b91 2019-03-15 stsp goto done;
1326 598a8b91 2019-03-15 stsp }
1327 9bdd68dd 2020-01-02 naddy if (linelen > 0 && line[linelen - 1] == '\n')
1328 9bdd68dd 2020-01-02 naddy line[linelen - 1] = '\0';
1329 3f338f0a 2021-07-27 stsp err = parse_packed_ref_line(&ref, NULL, line, 0);
1330 598a8b91 2019-03-15 stsp if (err)
1331 598a8b91 2019-03-15 stsp goto done;
1332 598a8b91 2019-03-15 stsp if (ref == NULL)
1333 598a8b91 2019-03-15 stsp continue;
1334 598a8b91 2019-03-15 stsp
1335 598a8b91 2019-03-15 stsp if (strcmp(ref->ref.ref.name, delref->ref.ref.name) == 0 &&
1336 faf5b56f 2023-01-31 op got_object_id_cmp(&ref->ref.ref.id,
1337 faf5b56f 2023-01-31 op &delref->ref.ref.id) == 0) {
1338 598a8b91 2019-03-15 stsp found_delref = 1;
1339 598a8b91 2019-03-15 stsp got_ref_close(ref);
1340 598a8b91 2019-03-15 stsp continue;
1341 598a8b91 2019-03-15 stsp }
1342 598a8b91 2019-03-15 stsp
1343 72acb3d8 2021-08-06 stsp err = got_reflist_insert(&new, &refs, ref,
1344 b8bad2ba 2019-08-23 stsp got_ref_cmp_by_name, NULL);
1345 598a8b91 2019-03-15 stsp if (err || new == NULL /* duplicate */)
1346 598a8b91 2019-03-15 stsp got_ref_close(ref);
1347 598a8b91 2019-03-15 stsp if (err)
1348 598a8b91 2019-03-15 stsp goto done;
1349 598a8b91 2019-03-15 stsp }
1350 598a8b91 2019-03-15 stsp
1351 598a8b91 2019-03-15 stsp if (found_delref) {
1352 598a8b91 2019-03-15 stsp struct got_reflist_entry *re;
1353 598a8b91 2019-03-15 stsp size_t n;
1354 598a8b91 2019-03-15 stsp struct stat sb;
1355 598a8b91 2019-03-15 stsp
1356 598a8b91 2019-03-15 stsp n = fprintf(tmpf, "%s\n", GOT_PACKED_REFS_HEADER);
1357 598a8b91 2019-03-15 stsp if (n != sizeof(GOT_PACKED_REFS_HEADER)) {
1358 598a8b91 2019-03-15 stsp err = got_ferror(f, GOT_ERR_IO);
1359 598a8b91 2019-03-15 stsp goto done;
1360 598a8b91 2019-03-15 stsp }
1361 598a8b91 2019-03-15 stsp
1362 d9dff0e5 2020-12-26 stsp TAILQ_FOREACH(re, &refs, entry) {
1363 faf5b56f 2023-01-31 op char *hex;
1364 faf5b56f 2023-01-31 op size_t len;
1365 598a8b91 2019-03-15 stsp
1366 faf5b56f 2023-01-31 op err = got_object_id_str(&hex, &re->ref->ref.ref.id);
1367 faf5b56f 2023-01-31 op if (err)
1368 598a8b91 2019-03-15 stsp goto done;
1369 faf5b56f 2023-01-31 op len = strlen(hex);
1370 598a8b91 2019-03-15 stsp n = fprintf(tmpf, "%s ", hex);
1371 faf5b56f 2023-01-31 op free(hex);
1372 faf5b56f 2023-01-31 op if (n != len + 1) {
1373 598a8b91 2019-03-15 stsp err = got_ferror(f, GOT_ERR_IO);
1374 598a8b91 2019-03-15 stsp goto done;
1375 598a8b91 2019-03-15 stsp }
1376 faf5b56f 2023-01-31 op
1377 598a8b91 2019-03-15 stsp n = fprintf(tmpf, "%s\n", re->ref->ref.ref.name);
1378 598a8b91 2019-03-15 stsp if (n != strlen(re->ref->ref.ref.name) + 1) {
1379 598a8b91 2019-03-15 stsp err = got_ferror(f, GOT_ERR_IO);
1380 598a8b91 2019-03-15 stsp goto done;
1381 598a8b91 2019-03-15 stsp }
1382 598a8b91 2019-03-15 stsp }
1383 598a8b91 2019-03-15 stsp
1384 598a8b91 2019-03-15 stsp if (fflush(tmpf) != 0) {
1385 638f9024 2019-05-13 stsp err = got_error_from_errno("fflush");
1386 598a8b91 2019-03-15 stsp goto done;
1387 598a8b91 2019-03-15 stsp }
1388 598a8b91 2019-03-15 stsp
1389 3818e3c4 2020-11-01 naddy if (fstat(fileno(f), &sb) != 0) {
1390 598a8b91 2019-03-15 stsp if (errno != ENOENT) {
1391 3818e3c4 2020-11-01 naddy err = got_error_from_errno2("fstat",
1392 230a42bd 2019-05-11 jcs packed_refs_path);
1393 598a8b91 2019-03-15 stsp goto done;
1394 598a8b91 2019-03-15 stsp }
1395 598a8b91 2019-03-15 stsp sb.st_mode = GOT_DEFAULT_FILE_MODE;
1396 598a8b91 2019-03-15 stsp }
1397 598a8b91 2019-03-15 stsp
1398 3818e3c4 2020-11-01 naddy if (fchmod(fileno(tmpf), sb.st_mode) != 0) {
1399 3818e3c4 2020-11-01 naddy err = got_error_from_errno2("fchmod", tmppath);
1400 598a8b91 2019-03-15 stsp goto done;
1401 598a8b91 2019-03-15 stsp }
1402 598a8b91 2019-03-15 stsp
1403 3818e3c4 2020-11-01 naddy if (rename(tmppath, packed_refs_path) != 0) {
1404 3818e3c4 2020-11-01 naddy err = got_error_from_errno3("rename", tmppath,
1405 230a42bd 2019-05-11 jcs packed_refs_path);
1406 598a8b91 2019-03-15 stsp goto done;
1407 598a8b91 2019-03-15 stsp }
1408 15c388a9 2022-10-15 stsp free(tmppath);
1409 15c388a9 2022-10-15 stsp tmppath = NULL;
1410 598a8b91 2019-03-15 stsp }
1411 598a8b91 2019-03-15 stsp done:
1412 2f17228e 2019-05-12 stsp if (delref->lf == NULL && lf)
1413 5345b4c7 2021-07-06 stsp unlock_err = got_lockfile_unlock(lf, -1);
1414 598a8b91 2019-03-15 stsp if (f) {
1415 56b63ca4 2021-01-22 stsp if (fclose(f) == EOF && err == NULL)
1416 638f9024 2019-05-13 stsp err = got_error_from_errno("fclose");
1417 598a8b91 2019-03-15 stsp }
1418 15c388a9 2022-10-15 stsp if (tmppath && unlink(tmppath) == -1 && err == NULL)
1419 15c388a9 2022-10-15 stsp err = got_error_from_errno2("unlink", tmppath);
1420 15c388a9 2022-10-15 stsp if (tmpf && fclose(tmpf) == EOF && err == NULL)
1421 15c388a9 2022-10-15 stsp err = got_error_from_errno("fclose");
1422 598a8b91 2019-03-15 stsp free(tmppath);
1423 598a8b91 2019-03-15 stsp free(packed_refs_path);
1424 9bdd68dd 2020-01-02 naddy free(line);
1425 598a8b91 2019-03-15 stsp got_ref_list_free(&refs);
1426 598a8b91 2019-03-15 stsp return err ? err : unlock_err;
1427 598a8b91 2019-03-15 stsp }
1428 598a8b91 2019-03-15 stsp
1429 2a104ff6 2020-09-21 stsp static const struct got_error *
1430 2a104ff6 2020-09-21 stsp delete_loose_ref(struct got_reference *ref, struct got_repository *repo)
1431 2d2e1378 2019-03-11 stsp {
1432 2d2e1378 2019-03-11 stsp const struct got_error *err = NULL, *unlock_err = NULL;
1433 2d2e1378 2019-03-11 stsp const char *name = got_ref_get_name(ref);
1434 2d2e1378 2019-03-11 stsp char *path_refs = NULL, *path = NULL;
1435 2d2e1378 2019-03-11 stsp struct got_lockfile *lf = NULL;
1436 2d2e1378 2019-03-11 stsp
1437 2d2e1378 2019-03-11 stsp path_refs = get_refs_dir_path(repo, name);
1438 2d2e1378 2019-03-11 stsp if (path_refs == NULL) {
1439 638f9024 2019-05-13 stsp err = got_error_from_errno2("get_refs_dir_path", name);
1440 2d2e1378 2019-03-11 stsp goto done;
1441 2d2e1378 2019-03-11 stsp }
1442 2d2e1378 2019-03-11 stsp
1443 2d2e1378 2019-03-11 stsp if (asprintf(&path, "%s/%s", path_refs, name) == -1) {
1444 638f9024 2019-05-13 stsp err = got_error_from_errno("asprintf");
1445 2d2e1378 2019-03-11 stsp goto done;
1446 9e672c74 2019-03-11 stsp }
1447 2d2e1378 2019-03-11 stsp
1448 2f17228e 2019-05-12 stsp if (ref->lf == NULL) {
1449 5345b4c7 2021-07-06 stsp err = got_lockfile_lock(&lf, path, -1);
1450 2f17228e 2019-05-12 stsp if (err)
1451 2f17228e 2019-05-12 stsp goto done;
1452 2f17228e 2019-05-12 stsp }
1453 2d2e1378 2019-03-11 stsp
1454 2d2e1378 2019-03-11 stsp /* XXX: check if old content matches our expectations? */
1455 2d2e1378 2019-03-11 stsp
1456 a06ca3f7 2022-10-15 stsp if (unlink(path) == -1)
1457 638f9024 2019-05-13 stsp err = got_error_from_errno2("unlink", path);
1458 2d2e1378 2019-03-11 stsp done:
1459 2f17228e 2019-05-12 stsp if (ref->lf == NULL && lf)
1460 5345b4c7 2021-07-06 stsp unlock_err = got_lockfile_unlock(lf, -1);
1461 2d2e1378 2019-03-11 stsp
1462 2d2e1378 2019-03-11 stsp free(path_refs);
1463 2d2e1378 2019-03-11 stsp free(path);
1464 9e672c74 2019-03-11 stsp return err ? err : unlock_err;
1465 2a104ff6 2020-09-21 stsp }
1466 2a104ff6 2020-09-21 stsp
1467 2a104ff6 2020-09-21 stsp const struct got_error *
1468 2a104ff6 2020-09-21 stsp got_ref_delete(struct got_reference *ref, struct got_repository *repo)
1469 2a104ff6 2020-09-21 stsp {
1470 2a104ff6 2020-09-21 stsp const struct got_error *err = NULL;
1471 2a104ff6 2020-09-21 stsp struct got_reference *ref2;
1472 2a104ff6 2020-09-21 stsp
1473 2a104ff6 2020-09-21 stsp if (ref->flags & GOT_REF_IS_PACKED) {
1474 2a104ff6 2020-09-21 stsp err = delete_packed_ref(ref, repo);
1475 2a104ff6 2020-09-21 stsp if (err)
1476 2a104ff6 2020-09-21 stsp return err;
1477 2a104ff6 2020-09-21 stsp
1478 a1c4175c 2020-09-22 stsp err = got_ref_open(&ref2, repo, got_ref_get_name(ref), 0);
1479 2a104ff6 2020-09-21 stsp if (err) {
1480 2a104ff6 2020-09-21 stsp if (err->code == GOT_ERR_NOT_REF)
1481 2a104ff6 2020-09-21 stsp return NULL;
1482 2a104ff6 2020-09-21 stsp return err;
1483 2a104ff6 2020-09-21 stsp }
1484 2a104ff6 2020-09-21 stsp
1485 2a104ff6 2020-09-21 stsp err = delete_loose_ref(ref2, repo);
1486 2a104ff6 2020-09-21 stsp got_ref_close(ref2);
1487 2a104ff6 2020-09-21 stsp return err;
1488 2a104ff6 2020-09-21 stsp } else {
1489 2a104ff6 2020-09-21 stsp err = delete_loose_ref(ref, repo);
1490 2a104ff6 2020-09-21 stsp if (err)
1491 2a104ff6 2020-09-21 stsp return err;
1492 2a104ff6 2020-09-21 stsp
1493 a1c4175c 2020-09-22 stsp err = got_ref_open(&ref2, repo, got_ref_get_name(ref), 0);
1494 2a104ff6 2020-09-21 stsp if (err) {
1495 2a104ff6 2020-09-21 stsp if (err->code == GOT_ERR_NOT_REF)
1496 2a104ff6 2020-09-21 stsp return NULL;
1497 2a104ff6 2020-09-21 stsp return err;
1498 2a104ff6 2020-09-21 stsp }
1499 2a104ff6 2020-09-21 stsp
1500 2a104ff6 2020-09-21 stsp err = delete_packed_ref(ref2, repo);
1501 2a104ff6 2020-09-21 stsp got_ref_close(ref2);
1502 2a104ff6 2020-09-21 stsp return err;
1503 2a104ff6 2020-09-21 stsp }
1504 9e672c74 2019-03-11 stsp }
1505 2f17228e 2019-05-12 stsp
1506 2f17228e 2019-05-12 stsp const struct got_error *
1507 2f17228e 2019-05-12 stsp got_ref_unlock(struct got_reference *ref)
1508 2f17228e 2019-05-12 stsp {
1509 2f17228e 2019-05-12 stsp const struct got_error *err;
1510 5345b4c7 2021-07-06 stsp err = got_lockfile_unlock(ref->lf, -1);
1511 2f17228e 2019-05-12 stsp ref->lf = NULL;
1512 2f17228e 2019-05-12 stsp return err;
1513 2f17228e 2019-05-12 stsp }
1514 7b5b670e 2020-12-25 stsp
1515 7b5b670e 2020-12-25 stsp struct got_reflist_object_id_map {
1516 7b5b670e 2020-12-25 stsp struct got_object_idset *idset;
1517 7b5b670e 2020-12-25 stsp };
1518 7b5b670e 2020-12-25 stsp
1519 7b5b670e 2020-12-25 stsp struct got_reflist_object_id_map_entry {
1520 7b5b670e 2020-12-25 stsp struct got_reflist_head refs;
1521 7b5b670e 2020-12-25 stsp };
1522 24202e46 2020-12-26 stsp
1523 24202e46 2020-12-26 stsp static const struct got_error *
1524 24202e46 2020-12-26 stsp add_object_id_map_entry(struct got_object_idset *idset,
1525 24202e46 2020-12-26 stsp struct got_object_id *id, struct got_reflist_entry *re)
1526 24202e46 2020-12-26 stsp {
1527 24202e46 2020-12-26 stsp const struct got_error *err = NULL;
1528 24202e46 2020-12-26 stsp struct got_reflist_object_id_map_entry *ent;
1529 24202e46 2020-12-26 stsp struct got_reflist_entry *new;
1530 24202e46 2020-12-26 stsp
1531 24202e46 2020-12-26 stsp ent = got_object_idset_get(idset, id);
1532 24202e46 2020-12-26 stsp if (ent == NULL) {
1533 24202e46 2020-12-26 stsp ent = malloc(sizeof(*ent));
1534 24202e46 2020-12-26 stsp if (ent == NULL)
1535 24202e46 2020-12-26 stsp return got_error_from_errno("malloc");
1536 7b5b670e 2020-12-25 stsp
1537 24202e46 2020-12-26 stsp TAILQ_INIT(&ent->refs);
1538 24202e46 2020-12-26 stsp err = got_object_idset_add(idset, id, ent);
1539 bb6672b6 2022-04-14 tb if (err) {
1540 bb6672b6 2022-04-14 tb free(ent);
1541 24202e46 2020-12-26 stsp return err;
1542 bb6672b6 2022-04-14 tb }
1543 24202e46 2020-12-26 stsp }
1544 24202e46 2020-12-26 stsp
1545 24202e46 2020-12-26 stsp err = got_reflist_entry_dup(&new, re);
1546 24202e46 2020-12-26 stsp if (err)
1547 24202e46 2020-12-26 stsp return err;
1548 24202e46 2020-12-26 stsp
1549 24202e46 2020-12-26 stsp TAILQ_INSERT_TAIL(&ent->refs, new, entry);
1550 24202e46 2020-12-26 stsp return NULL;
1551 24202e46 2020-12-26 stsp }
1552 24202e46 2020-12-26 stsp
1553 7b5b670e 2020-12-25 stsp const struct got_error *
1554 7b5b670e 2020-12-25 stsp got_reflist_object_id_map_create(struct got_reflist_object_id_map **map,
1555 7b5b670e 2020-12-25 stsp struct got_reflist_head *refs, struct got_repository *repo)
1556 7b5b670e 2020-12-25 stsp {
1557 7b5b670e 2020-12-25 stsp const struct got_error *err = NULL;
1558 7b5b670e 2020-12-25 stsp struct got_object_idset *idset;
1559 7b5b670e 2020-12-25 stsp struct got_object_id *id = NULL;
1560 7b5b670e 2020-12-25 stsp struct got_reflist_entry *re;
1561 7b5b670e 2020-12-25 stsp
1562 7b5b670e 2020-12-25 stsp idset = got_object_idset_alloc();
1563 7b5b670e 2020-12-25 stsp if (idset == NULL)
1564 7b5b670e 2020-12-25 stsp return got_error_from_errno("got_object_idset_alloc");
1565 7b5b670e 2020-12-25 stsp
1566 7b5b670e 2020-12-25 stsp *map = malloc(sizeof(**map));
1567 7b5b670e 2020-12-25 stsp if (*map == NULL) {
1568 7b5b670e 2020-12-25 stsp got_object_idset_free(idset);
1569 7b5b670e 2020-12-25 stsp return got_error_from_errno("malloc");
1570 7b5b670e 2020-12-25 stsp }
1571 7b5b670e 2020-12-25 stsp (*map)->idset = idset;
1572 7b5b670e 2020-12-25 stsp
1573 d9dff0e5 2020-12-26 stsp TAILQ_FOREACH(re, refs, entry) {
1574 24202e46 2020-12-26 stsp struct got_tag_object *tag = NULL;
1575 7b5b670e 2020-12-25 stsp
1576 7b5b670e 2020-12-25 stsp err = got_ref_resolve(&id, repo, re->ref);
1577 7b5b670e 2020-12-25 stsp if (err)
1578 7b5b670e 2020-12-25 stsp goto done;
1579 7b5b670e 2020-12-25 stsp
1580 24202e46 2020-12-26 stsp err = add_object_id_map_entry(idset, id, re);
1581 24202e46 2020-12-26 stsp if (err)
1582 24202e46 2020-12-26 stsp goto done;
1583 24202e46 2020-12-26 stsp
1584 24202e46 2020-12-26 stsp if (strstr(got_ref_get_name(re->ref), "/tags/") == NULL) {
1585 24202e46 2020-12-26 stsp free(id);
1586 24202e46 2020-12-26 stsp id = NULL;
1587 24202e46 2020-12-26 stsp continue;
1588 24202e46 2020-12-26 stsp }
1589 24202e46 2020-12-26 stsp
1590 24202e46 2020-12-26 stsp err = got_object_open_as_tag(&tag, repo, id);
1591 24202e46 2020-12-26 stsp if (err) {
1592 24202e46 2020-12-26 stsp if (err->code != GOT_ERR_OBJ_TYPE)
1593 7b5b670e 2020-12-25 stsp goto done;
1594 24202e46 2020-12-26 stsp /* Ref points at something other than a tag. */
1595 24202e46 2020-12-26 stsp err = NULL;
1596 24202e46 2020-12-26 stsp tag = NULL;
1597 24202e46 2020-12-26 stsp free(id);
1598 24202e46 2020-12-26 stsp id = NULL;
1599 24202e46 2020-12-26 stsp continue;
1600 7b5b670e 2020-12-25 stsp }
1601 7b5b670e 2020-12-25 stsp
1602 24202e46 2020-12-26 stsp err = add_object_id_map_entry(idset,
1603 24202e46 2020-12-26 stsp got_object_tag_get_object_id(tag), re);
1604 f0ff8d4c 2020-12-26 stsp got_object_tag_close(tag);
1605 7b5b670e 2020-12-25 stsp if (err)
1606 7b5b670e 2020-12-25 stsp goto done;
1607 24202e46 2020-12-26 stsp
1608 7b5b670e 2020-12-25 stsp free(id);
1609 7b5b670e 2020-12-25 stsp id = NULL;
1610 7b5b670e 2020-12-25 stsp }
1611 7b5b670e 2020-12-25 stsp done:
1612 7b5b670e 2020-12-25 stsp free(id);
1613 7b5b670e 2020-12-25 stsp if (err) {
1614 f193b038 2020-12-26 stsp got_reflist_object_id_map_free(*map);
1615 7b5b670e 2020-12-25 stsp *map = NULL;
1616 7b5b670e 2020-12-25 stsp }
1617 a53af95f 2020-12-26 stsp return err;
1618 7b5b670e 2020-12-25 stsp }
1619 7b5b670e 2020-12-25 stsp
1620 7b5b670e 2020-12-25 stsp struct got_reflist_head *
1621 7b5b670e 2020-12-25 stsp got_reflist_object_id_map_lookup(struct got_reflist_object_id_map *map,
1622 7b5b670e 2020-12-25 stsp struct got_object_id *id)
1623 7b5b670e 2020-12-25 stsp {
1624 7b5b670e 2020-12-25 stsp struct got_reflist_object_id_map_entry *ent;
1625 7b5b670e 2020-12-25 stsp ent = got_object_idset_get(map->idset, id);
1626 7b5b670e 2020-12-25 stsp if (ent)
1627 7b5b670e 2020-12-25 stsp return &ent->refs;
1628 7b5b670e 2020-12-25 stsp return NULL;
1629 7b5b670e 2020-12-25 stsp }
1630 7b5b670e 2020-12-25 stsp
1631 7b5b670e 2020-12-25 stsp static const struct got_error *
1632 7b5b670e 2020-12-25 stsp free_id_map_entry(struct got_object_id *id, void *data, void *arg)
1633 7b5b670e 2020-12-25 stsp {
1634 7b5b670e 2020-12-25 stsp struct got_reflist_object_id_map_entry *ent = data;
1635 7b5b670e 2020-12-25 stsp
1636 7b5b670e 2020-12-25 stsp got_ref_list_free(&ent->refs);
1637 7b5b670e 2020-12-25 stsp free(ent);
1638 7b5b670e 2020-12-25 stsp return NULL;
1639 7b5b670e 2020-12-25 stsp }
1640 7b5b670e 2020-12-25 stsp
1641 7b5b670e 2020-12-25 stsp void
1642 f193b038 2020-12-26 stsp got_reflist_object_id_map_free(struct got_reflist_object_id_map *map)
1643 7b5b670e 2020-12-25 stsp {
1644 7b5b670e 2020-12-25 stsp got_object_idset_for_each(map->idset, free_id_map_entry, NULL);
1645 7b5b670e 2020-12-25 stsp got_object_idset_free(map->idset);
1646 7b5b670e 2020-12-25 stsp free(map);
1647 7b5b670e 2020-12-25 stsp }