2 5d56da81 2019-01-13 stsp * Copyright (c) 2018, 2019 Stefan Sperling <stsp@openbsd.org>
4 5261c201 2018-04-01 stsp * Permission to use, copy, modify, and distribute this software for any
5 5261c201 2018-04-01 stsp * purpose with or without fee is hereby granted, provided that the above
6 5261c201 2018-04-01 stsp * copyright notice and this permission notice appear in all copies.
8 5261c201 2018-04-01 stsp * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 5261c201 2018-04-01 stsp * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 5261c201 2018-04-01 stsp * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 5261c201 2018-04-01 stsp * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 5261c201 2018-04-01 stsp * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 5261c201 2018-04-01 stsp * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 5261c201 2018-04-01 stsp * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 5261c201 2018-04-01 stsp #include <sys/types.h>
18 5261c201 2018-04-01 stsp #include <sys/queue.h>
19 9e672c74 2019-03-11 stsp #include <sys/stat.h>
21 0fd469ce 2019-03-11 stsp #include <errno.h>
22 f77a24b0 2019-03-11 stsp #include <ctype.h>
23 a04f49d2 2019-02-04 stsp #include <dirent.h>
24 5261c201 2018-04-01 stsp #include <sha1.h>
25 5261c201 2018-04-01 stsp #include <stdio.h>
26 5261c201 2018-04-01 stsp #include <stdlib.h>
27 5261c201 2018-04-01 stsp #include <string.h>
28 5261c201 2018-04-01 stsp #include <util.h>
29 5261c201 2018-04-01 stsp #include <zlib.h>
30 788c352e 2018-06-16 stsp #include <time.h>
31 0cd1c46a 2019-03-11 stsp #include <libgen.h>
33 5261c201 2018-04-01 stsp #include "got_error.h"
34 5261c201 2018-04-01 stsp #include "got_object.h"
35 5261c201 2018-04-01 stsp #include "got_repository.h"
36 5261c201 2018-04-01 stsp #include "got_reference.h"
37 9e672c74 2019-03-11 stsp #include "got_opentemp.h"
38 324d37e7 2019-05-11 stsp #include "got_path.h"
40 5261c201 2018-04-01 stsp #include "got_lib_sha1.h"
41 5261c201 2018-04-01 stsp #include "got_lib_delta.h"
42 63581804 2018-07-09 stsp #include "got_lib_inflate.h"
43 5261c201 2018-04-01 stsp #include "got_lib_object.h"
44 f77a24b0 2019-03-11 stsp #include "got_lib_lockfile.h"
46 fb79db15 2019-02-01 stsp #ifndef nitems
47 fb79db15 2019-02-01 stsp #define nitems(_a) (sizeof(_a) / sizeof((_a)[0]))
50 d1f2edc9 2018-06-13 stsp #define GOT_REF_HEADS "heads"
51 d1f2edc9 2018-06-13 stsp #define GOT_REF_TAGS "tags"
52 d1f2edc9 2018-06-13 stsp #define GOT_REF_REMOTES "remotes"
55 598a8b91 2019-03-15 stsp * We do not resolve tags yet, and don't yet care about sorting refs either,
56 598a8b91 2019-03-15 stsp * so packed-refs files we write contain a minimal header which disables all
57 598a8b91 2019-03-15 stsp * packed-refs "traits" supported by Git.
59 598a8b91 2019-03-15 stsp #define GOT_PACKED_REFS_HEADER "# pack-refs with:"
61 5261c201 2018-04-01 stsp /* A symbolic reference. */
62 5261c201 2018-04-01 stsp struct got_symref {
67 5261c201 2018-04-01 stsp /* A non-symbolic reference (there is no better designation). */
68 5261c201 2018-04-01 stsp struct got_ref {
70 5261c201 2018-04-01 stsp u_int8_t sha1[SHA1_DIGEST_LENGTH];
73 5261c201 2018-04-01 stsp /* A reference which points to an arbitrary object. */
74 5261c201 2018-04-01 stsp struct got_reference {
75 5261c201 2018-04-01 stsp unsigned int flags;
76 5261c201 2018-04-01 stsp #define GOT_REF_IS_SYMBOLIC 0x01
77 f9267c9a 2019-03-15 stsp #define GOT_REF_IS_PACKED 0x02
80 5261c201 2018-04-01 stsp struct got_ref ref;
81 5261c201 2018-04-01 stsp struct got_symref symref;
85 5261c201 2018-04-01 stsp static const struct got_error *
86 f9267c9a 2019-03-15 stsp alloc_ref(struct got_reference **ref, const char *name,
87 f9267c9a 2019-03-15 stsp struct got_object_id *id, int flags)
89 f9267c9a 2019-03-15 stsp const struct got_error *err = NULL;
91 f9267c9a 2019-03-15 stsp *ref = calloc(1, sizeof(**ref));
92 f9267c9a 2019-03-15 stsp if (*ref == NULL)
93 230a42bd 2019-05-11 jcs return got_error_prefix_errno("calloc");
95 80d5fc1f 2019-03-15 stsp memcpy((*ref)->ref.ref.sha1, id->sha1, sizeof((*ref)->ref.ref.sha1));
96 c980e470 2019-03-15 stsp (*ref)->flags = flags;
97 f9267c9a 2019-03-15 stsp (*ref)->ref.ref.name = strdup(name);
98 f9267c9a 2019-03-15 stsp if ((*ref)->ref.ref.name == NULL) {
99 230a42bd 2019-05-11 jcs err = got_error_prefix_errno("strdup");
100 c980e470 2019-03-15 stsp got_ref_close(*ref);
101 f9267c9a 2019-03-15 stsp *ref = NULL;
103 f9267c9a 2019-03-15 stsp return err;
106 f9267c9a 2019-03-15 stsp static const struct got_error *
107 f9267c9a 2019-03-15 stsp alloc_symref(struct got_reference **ref, const char *name,
108 f9267c9a 2019-03-15 stsp const char *target_ref, int flags)
110 f9267c9a 2019-03-15 stsp const struct got_error *err = NULL;
112 5261c201 2018-04-01 stsp *ref = calloc(1, sizeof(**ref));
113 5261c201 2018-04-01 stsp if (*ref == NULL)
114 230a42bd 2019-05-11 jcs return got_error_prefix_errno("calloc");
116 f9267c9a 2019-03-15 stsp (*ref)->flags = GOT_REF_IS_SYMBOLIC | flags;
117 f9267c9a 2019-03-15 stsp (*ref)->ref.symref.name = strdup(name);
118 f9267c9a 2019-03-15 stsp if ((*ref)->ref.symref.name == NULL) {
119 230a42bd 2019-05-11 jcs err = got_error_prefix_errno("strdup");
120 f9267c9a 2019-03-15 stsp got_ref_close(*ref);
121 f9267c9a 2019-03-15 stsp *ref = NULL;
123 f9267c9a 2019-03-15 stsp (*ref)->ref.symref.ref = strdup(target_ref);
124 f9267c9a 2019-03-15 stsp if ((*ref)->ref.symref.ref == NULL) {
125 230a42bd 2019-05-11 jcs err = got_error_prefix_errno("strdup");
126 f9267c9a 2019-03-15 stsp got_ref_close(*ref);
127 f9267c9a 2019-03-15 stsp *ref = NULL;
129 f9267c9a 2019-03-15 stsp return err;
132 5261c201 2018-04-01 stsp static const struct got_error *
133 f9267c9a 2019-03-15 stsp parse_symref(struct got_reference **ref, const char *name, const char *line)
135 f9267c9a 2019-03-15 stsp if (line[0] == '\0')
136 f9267c9a 2019-03-15 stsp return got_error(GOT_ERR_BAD_REF_DATA);
138 f9267c9a 2019-03-15 stsp return alloc_symref(ref, name, line, 0);
141 f9267c9a 2019-03-15 stsp static const struct got_error *
142 5261c201 2018-04-01 stsp parse_ref_line(struct got_reference **ref, const char *name, const char *line)
144 5892cdd6 2019-03-10 stsp struct got_object_id id;
146 5261c201 2018-04-01 stsp if (strncmp(line, "ref: ", 5) == 0) {
148 5261c201 2018-04-01 stsp return parse_symref(ref, name, line);
151 5892cdd6 2019-03-10 stsp if (!got_parse_sha1_digest(id.sha1, line))
152 30c0868d 2019-02-03 stsp return got_error(GOT_ERR_BAD_REF_DATA);
154 f9267c9a 2019-03-15 stsp return alloc_ref(ref, name, &id, 0);
157 5261c201 2018-04-01 stsp static const struct got_error *
158 5261c201 2018-04-01 stsp parse_ref_file(struct got_reference **ref, const char *name,
159 5261c201 2018-04-01 stsp const char *abspath)
161 5261c201 2018-04-01 stsp const struct got_error *err = NULL;
163 5261c201 2018-04-01 stsp char *line;
164 5261c201 2018-04-01 stsp size_t len;
165 5261c201 2018-04-01 stsp const char delim[3] = {'\0', '\0', '\0'};
167 c0a1c016 2019-03-15 stsp f = fopen(abspath, "rb");
168 5261c201 2018-04-01 stsp if (f == NULL)
169 1e37702e 2019-02-04 stsp return NULL;
171 5261c201 2018-04-01 stsp line = fparseln(f, &len, NULL, delim, 0);
172 5261c201 2018-04-01 stsp if (line == NULL) {
173 30c0868d 2019-02-03 stsp err = got_error(GOT_ERR_BAD_REF_DATA);
177 5261c201 2018-04-01 stsp err = parse_ref_line(ref, name, line);
179 5261c201 2018-04-01 stsp free(line);
180 fb43ecf1 2019-02-11 stsp if (fclose(f) != 0 && err == NULL)
181 230a42bd 2019-05-11 jcs err = got_error_prefix_errno("fclose");
182 5261c201 2018-04-01 stsp return err;
186 c5f754cc 2019-02-01 stsp is_well_known_ref(const char *refname)
188 c5f754cc 2019-02-01 stsp return (strcmp(refname, GOT_REF_HEAD) == 0 ||
189 5261c201 2018-04-01 stsp strcmp(refname, GOT_REF_ORIG_HEAD) == 0 ||
190 5261c201 2018-04-01 stsp strcmp(refname, GOT_REF_MERGE_HEAD) == 0 ||
191 c5f754cc 2019-02-01 stsp strcmp(refname, GOT_REF_FETCH_HEAD) == 0);
194 c5f754cc 2019-02-01 stsp static char *
195 c5f754cc 2019-02-01 stsp get_refs_dir_path(struct got_repository *repo, const char *refname)
197 c5f754cc 2019-02-01 stsp if (is_well_known_ref(refname) || strncmp(refname, "refs/", 5) == 0)
198 6e9da951 2019-01-06 stsp return strdup(got_repo_get_path_git_dir(repo));
200 5261c201 2018-04-01 stsp return got_repo_get_path_refs(repo);
204 f77a24b0 2019-03-11 stsp is_valid_ref_name(const char *name)
206 f77a24b0 2019-03-11 stsp const char *s, *slash, *seg;
207 f77a24b0 2019-03-11 stsp const char forbidden[] = { ' ', '~', '^', ':', '?', '*', '[' , '\\' };
208 f77a24b0 2019-03-11 stsp const char *forbidden_seq[] = { "//", "..", "@{" };
209 f77a24b0 2019-03-11 stsp const char *lfs = GOT_LOCKFILE_SUFFIX;
210 f77a24b0 2019-03-11 stsp const size_t lfs_len = sizeof(GOT_LOCKFILE_SUFFIX) - 1;
213 f77a24b0 2019-03-11 stsp if (name[0] == '@' && name[1] == '\0')
216 f77a24b0 2019-03-11 stsp slash = strchr(name, '/');
217 f77a24b0 2019-03-11 stsp if (slash == NULL)
222 f77a24b0 2019-03-11 stsp if (seg[0] == '\0' || seg[0] == '.' || seg[0] == '/')
224 f77a24b0 2019-03-11 stsp while (*s) {
225 f77a24b0 2019-03-11 stsp for (i = 0; i < nitems(forbidden); i++) {
226 f77a24b0 2019-03-11 stsp if (*s == forbidden[i])
229 f77a24b0 2019-03-11 stsp for (i = 0; i < nitems(forbidden_seq); i++) {
230 f77a24b0 2019-03-11 stsp if (s[0] == forbidden_seq[i][0] &&
231 f77a24b0 2019-03-11 stsp s[1] == forbidden_seq[i][1])
234 f77a24b0 2019-03-11 stsp if (iscntrl((unsigned char)s[0]))
236 f77a24b0 2019-03-11 stsp if (s[0] == '.' && s[1] == '\0')
238 f77a24b0 2019-03-11 stsp if (*s == '/') {
239 f77a24b0 2019-03-11 stsp const char *nextseg = s + 1;
240 f77a24b0 2019-03-11 stsp if (nextseg[0] == '\0' || nextseg[0] == '.' ||
241 f77a24b0 2019-03-11 stsp nextseg[0] == '/')
243 f77a24b0 2019-03-11 stsp if (seg <= s - lfs_len &&
244 f77a24b0 2019-03-11 stsp strncmp(s - lfs_len, lfs, lfs_len) == 0)
246 f77a24b0 2019-03-11 stsp seg = nextseg;
251 f77a24b0 2019-03-11 stsp if (seg <= s - lfs_len &&
252 f77a24b0 2019-03-11 stsp strncmp(s - lfs_len, lfs, lfs_len) == 0)
258 5892cdd6 2019-03-10 stsp const struct got_error *
259 5892cdd6 2019-03-10 stsp got_ref_alloc(struct got_reference **ref, const char *name,
260 5892cdd6 2019-03-10 stsp struct got_object_id *id)
262 f77a24b0 2019-03-11 stsp if (!is_valid_ref_name(name))
263 f77a24b0 2019-03-11 stsp return got_error(GOT_ERR_BAD_REF_NAME);
265 f9267c9a 2019-03-15 stsp return alloc_ref(ref, name, id, 0);
268 d1f2edc9 2018-06-13 stsp static const struct got_error *
269 fb79db15 2019-02-01 stsp parse_packed_ref_line(struct got_reference **ref, const char *abs_refname,
270 fb79db15 2019-02-01 stsp const char *line)
272 5892cdd6 2019-03-10 stsp struct got_object_id id;
273 5892cdd6 2019-03-10 stsp const char *name;
275 fb79db15 2019-02-01 stsp *ref = NULL;
277 532920c8 2019-02-01 stsp if (line[0] == '#' || line[0] == '^')
278 fb79db15 2019-02-01 stsp return NULL;
280 5892cdd6 2019-03-10 stsp if (!got_parse_sha1_digest(id.sha1, line))
281 30c0868d 2019-02-03 stsp return got_error(GOT_ERR_BAD_REF_DATA);
283 199a4027 2019-02-02 stsp if (abs_refname) {
284 199a4027 2019-02-02 stsp if (strcmp(line + SHA1_DIGEST_STRING_LENGTH, abs_refname) != 0)
285 199a4027 2019-02-02 stsp return NULL;
286 5892cdd6 2019-03-10 stsp name = abs_refname;
288 5892cdd6 2019-03-10 stsp name = line + SHA1_DIGEST_STRING_LENGTH;
290 f9267c9a 2019-03-15 stsp return alloc_ref(ref, name, &id, GOT_REF_IS_PACKED);
293 fb79db15 2019-02-01 stsp static const struct got_error *
294 0dec1cc0 2019-02-01 stsp open_packed_ref(struct got_reference **ref, FILE *f, const char **subdirs,
295 0dec1cc0 2019-02-01 stsp int nsubdirs, const char *refname)
297 fb79db15 2019-02-01 stsp const struct got_error *err = NULL;
298 fb79db15 2019-02-01 stsp char *abs_refname;
299 fb79db15 2019-02-01 stsp char *line;
300 fb79db15 2019-02-01 stsp size_t len;
301 fb79db15 2019-02-01 stsp const char delim[3] = {'\0', '\0', '\0'};
302 0dec1cc0 2019-02-01 stsp int i, ref_is_absolute = (strncmp(refname, "refs/", 5) == 0);
304 1e37702e 2019-02-04 stsp *ref = NULL;
306 0dec1cc0 2019-02-01 stsp if (ref_is_absolute)
307 0dec1cc0 2019-02-01 stsp abs_refname = (char *)refname;
309 fb79db15 2019-02-01 stsp line = fparseln(f, &len, NULL, delim, 0);
310 7ab0422a 2019-03-15 stsp if (line == NULL) {
311 7ab0422a 2019-03-15 stsp if (feof(f))
313 7ab0422a 2019-03-15 stsp err = got_ferror(f, GOT_ERR_BAD_REF_DATA);
316 0dec1cc0 2019-02-01 stsp for (i = 0; i < nsubdirs; i++) {
317 0dec1cc0 2019-02-01 stsp if (!ref_is_absolute &&
318 0dec1cc0 2019-02-01 stsp asprintf(&abs_refname, "refs/%s/%s", subdirs[i],
319 0dec1cc0 2019-02-01 stsp refname) == -1)
320 230a42bd 2019-05-11 jcs return got_error_prefix_errno("asprintf");
321 0dec1cc0 2019-02-01 stsp err = parse_packed_ref_line(ref, abs_refname, line);
322 0dec1cc0 2019-02-01 stsp if (!ref_is_absolute)
323 0dec1cc0 2019-02-01 stsp free(abs_refname);
324 532920c8 2019-02-01 stsp if (err || *ref != NULL)
327 fb79db15 2019-02-01 stsp free(line);
330 fb79db15 2019-02-01 stsp } while (*ref == NULL);
332 fb79db15 2019-02-01 stsp return err;
335 fb79db15 2019-02-01 stsp static const struct got_error *
336 d1f2edc9 2018-06-13 stsp open_ref(struct got_reference **ref, const char *path_refs, const char *subdir,
337 a04f49d2 2019-02-04 stsp const char *name)
339 d1f2edc9 2018-06-13 stsp const struct got_error *err = NULL;
340 a04f49d2 2019-02-04 stsp char *path = NULL;
341 a04f49d2 2019-02-04 stsp char *normpath = NULL;
342 a04f49d2 2019-02-04 stsp char *absname = NULL;
343 a04f49d2 2019-02-04 stsp int ref_is_absolute = (strncmp(name, "refs/", 5) == 0);
344 a04f49d2 2019-02-04 stsp int ref_is_well_known = is_well_known_ref(name);
346 1e37702e 2019-02-04 stsp *ref = NULL;
348 a04f49d2 2019-02-04 stsp if (ref_is_absolute || ref_is_well_known) {
349 a04f49d2 2019-02-04 stsp if (asprintf(&path, "%s/%s", path_refs, name) == -1)
350 230a42bd 2019-05-11 jcs return got_error_prefix_errno("asprintf");
351 a04f49d2 2019-02-04 stsp absname = (char *)name;
353 58908ed0 2019-03-11 stsp if (asprintf(&path, "%s/%s%s%s", path_refs, subdir,
354 58908ed0 2019-03-11 stsp subdir[0] ? "/" : "", name) == -1)
355 230a42bd 2019-05-11 jcs return got_error_prefix_errno("asprintf");
357 58908ed0 2019-03-11 stsp if (asprintf(&absname, "refs/%s%s%s",
358 58908ed0 2019-03-11 stsp subdir, subdir[0] ? "/" : "", name) == -1) {
359 230a42bd 2019-05-11 jcs err = got_error_prefix_errno("asprintf");
364 a04f49d2 2019-02-04 stsp normpath = got_path_normalize(path);
365 d1f2edc9 2018-06-13 stsp if (normpath == NULL) {
366 230a42bd 2019-05-11 jcs err = got_error_prefix_errno2("got_path_normalize", path);
370 a04f49d2 2019-02-04 stsp err = parse_ref_file(ref, absname, normpath);
372 a04f49d2 2019-02-04 stsp if (!ref_is_absolute && !ref_is_well_known)
373 a04f49d2 2019-02-04 stsp free(absname);
374 a04f49d2 2019-02-04 stsp free(path);
375 d1f2edc9 2018-06-13 stsp free(normpath);
376 d1f2edc9 2018-06-13 stsp return err;
379 5261c201 2018-04-01 stsp const struct got_error *
380 5261c201 2018-04-01 stsp got_ref_open(struct got_reference **ref, struct got_repository *repo,
381 5261c201 2018-04-01 stsp const char *refname)
383 5261c201 2018-04-01 stsp const struct got_error *err = NULL;
384 c5f754cc 2019-02-01 stsp char *path_refs = NULL;
385 fb79db15 2019-02-01 stsp const char *subdirs[] = {
386 fb79db15 2019-02-01 stsp GOT_REF_HEADS, GOT_REF_TAGS, GOT_REF_REMOTES
388 c5f754cc 2019-02-01 stsp int i, well_known = is_well_known_ref(refname);
390 1e37702e 2019-02-04 stsp *ref = NULL;
392 e135804e 2019-02-10 stsp path_refs = get_refs_dir_path(repo, refname);
393 e135804e 2019-02-10 stsp if (path_refs == NULL) {
394 230a42bd 2019-05-11 jcs err = got_error_prefix_errno2("get_refs_dir_path", refname);
398 c5f754cc 2019-02-01 stsp if (!well_known) {
399 c5f754cc 2019-02-01 stsp char *packed_refs_path;
402 e135804e 2019-02-10 stsp /* Search on-disk refs before packed refs! */
403 e135804e 2019-02-10 stsp for (i = 0; i < nitems(subdirs); i++) {
404 e135804e 2019-02-10 stsp err = open_ref(ref, path_refs, subdirs[i], refname);
405 e135804e 2019-02-10 stsp if (err || *ref)
409 c5f754cc 2019-02-01 stsp packed_refs_path = got_repo_get_path_packed_refs(repo);
410 e135804e 2019-02-10 stsp if (packed_refs_path == NULL) {
411 230a42bd 2019-05-11 jcs err = got_error_prefix_errno(
412 230a42bd 2019-05-11 jcs "got_repo_get_path_packed_refs");
416 c5f754cc 2019-02-01 stsp f = fopen(packed_refs_path, "rb");
417 c5f754cc 2019-02-01 stsp free(packed_refs_path);
418 c5f754cc 2019-02-01 stsp if (f != NULL) {
419 0dec1cc0 2019-02-01 stsp err = open_packed_ref(ref, f, subdirs, nitems(subdirs),
421 fb43ecf1 2019-02-11 stsp if (fclose(f) != 0 && err == NULL)
422 230a42bd 2019-05-11 jcs err = got_error_prefix_errno("fclose");
423 1e37702e 2019-02-04 stsp if (err || *ref)
428 fb79db15 2019-02-01 stsp err = open_ref(ref, path_refs, "", refname);
432 1e37702e 2019-02-04 stsp if (*ref == NULL)
433 1e37702e 2019-02-04 stsp err = got_error_not_ref(refname);
434 5261c201 2018-04-01 stsp free(path_refs);
435 5261c201 2018-04-01 stsp return err;
439 5261c201 2018-04-01 stsp got_ref_close(struct got_reference *ref)
441 e09d28b1 2019-03-15 stsp if (ref->flags & GOT_REF_IS_SYMBOLIC) {
442 5261c201 2018-04-01 stsp free(ref->ref.symref.name);
443 e09d28b1 2019-03-15 stsp free(ref->ref.symref.ref);
445 5261c201 2018-04-01 stsp free(ref->ref.ref.name);
449 5261c201 2018-04-01 stsp struct got_reference *
450 5261c201 2018-04-01 stsp got_ref_dup(struct got_reference *ref)
452 5261c201 2018-04-01 stsp struct got_reference *ret;
454 5261c201 2018-04-01 stsp ret = calloc(1, sizeof(*ret));
455 5261c201 2018-04-01 stsp if (ret == NULL)
456 5261c201 2018-04-01 stsp return NULL;
458 5261c201 2018-04-01 stsp ret->flags = ref->flags;
459 5261c201 2018-04-01 stsp if (ref->flags & GOT_REF_IS_SYMBOLIC) {
460 5261c201 2018-04-01 stsp ret->ref.symref.name = strdup(ref->ref.symref.name);
461 5261c201 2018-04-01 stsp if (ret->ref.symref.name == NULL) {
463 5261c201 2018-04-01 stsp return NULL;
465 5261c201 2018-04-01 stsp ret->ref.symref.ref = strdup(ref->ref.symref.ref);
466 5261c201 2018-04-01 stsp if (ret->ref.symref.ref == NULL) {
467 5261c201 2018-04-01 stsp free(ret->ref.symref.name);
469 5261c201 2018-04-01 stsp return NULL;
472 5261c201 2018-04-01 stsp ref->ref.ref.name = strdup(ref->ref.ref.name);
473 5261c201 2018-04-01 stsp if (ref->ref.ref.name == NULL) {
475 5261c201 2018-04-01 stsp return NULL;
477 5261c201 2018-04-01 stsp memcpy(ret->ref.ref.sha1, ref->ref.ref.sha1,
478 80d5fc1f 2019-03-15 stsp sizeof(ret->ref.ref.sha1));
481 5261c201 2018-04-01 stsp return ret;
484 5261c201 2018-04-01 stsp static const struct got_error *
485 5261c201 2018-04-01 stsp resolve_symbolic_ref(struct got_reference **resolved,
486 5261c201 2018-04-01 stsp struct got_repository *repo, struct got_reference *ref)
488 5261c201 2018-04-01 stsp struct got_reference *nextref;
489 5261c201 2018-04-01 stsp const struct got_error *err;
491 5261c201 2018-04-01 stsp err = got_ref_open(&nextref, repo, ref->ref.symref.ref);
493 5261c201 2018-04-01 stsp return err;
495 5261c201 2018-04-01 stsp if (nextref->flags & GOT_REF_IS_SYMBOLIC)
496 5261c201 2018-04-01 stsp err = resolve_symbolic_ref(resolved, repo, nextref);
498 5261c201 2018-04-01 stsp *resolved = got_ref_dup(nextref);
500 5261c201 2018-04-01 stsp got_ref_close(nextref);
501 5261c201 2018-04-01 stsp return err;
504 5261c201 2018-04-01 stsp const struct got_error *
505 5261c201 2018-04-01 stsp got_ref_resolve(struct got_object_id **id, struct got_repository *repo,
506 5261c201 2018-04-01 stsp struct got_reference *ref)
508 5261c201 2018-04-01 stsp const struct got_error *err;
510 5261c201 2018-04-01 stsp if (ref->flags & GOT_REF_IS_SYMBOLIC) {
511 5261c201 2018-04-01 stsp struct got_reference *resolved = NULL;
512 5261c201 2018-04-01 stsp err = resolve_symbolic_ref(&resolved, repo, ref);
513 5261c201 2018-04-01 stsp if (err == NULL)
514 5261c201 2018-04-01 stsp err = got_ref_resolve(id, repo, resolved);
515 57b6f99a 2019-04-13 stsp if (resolved)
516 57b6f99a 2019-04-13 stsp got_ref_close(resolved);
517 5261c201 2018-04-01 stsp return err;
520 5261c201 2018-04-01 stsp *id = calloc(1, sizeof(**id));
521 5261c201 2018-04-01 stsp if (*id == NULL)
522 230a42bd 2019-05-11 jcs return got_error_prefix_errno("calloc");
523 80d5fc1f 2019-03-15 stsp memcpy((*id)->sha1, ref->ref.ref.sha1, sizeof((*id)->sha1));
524 5261c201 2018-04-01 stsp return NULL;
528 5261c201 2018-04-01 stsp got_ref_to_str(struct got_reference *ref)
532 271d2a38 2018-12-25 stsp if (ref->flags & GOT_REF_IS_SYMBOLIC)
533 271d2a38 2018-12-25 stsp return strdup(ref->ref.symref.ref);
535 271d2a38 2018-12-25 stsp str = malloc(SHA1_DIGEST_STRING_LENGTH);
536 271d2a38 2018-12-25 stsp if (str == NULL)
537 271d2a38 2018-12-25 stsp return NULL;
539 271d2a38 2018-12-25 stsp if (got_sha1_digest_to_str(ref->ref.ref.sha1, str,
540 271d2a38 2018-12-25 stsp SHA1_DIGEST_STRING_LENGTH) == NULL) {
542 271d2a38 2018-12-25 stsp return NULL;
545 5261c201 2018-04-01 stsp return str;
548 0bd18d37 2019-02-01 stsp const char *
549 0bd18d37 2019-02-01 stsp got_ref_get_name(struct got_reference *ref)
551 0bd18d37 2019-02-01 stsp if (ref->flags & GOT_REF_IS_SYMBOLIC)
552 0bd18d37 2019-02-01 stsp return ref->ref.symref.name;
554 0bd18d37 2019-02-01 stsp return ref->ref.ref.name;
557 199a4027 2019-02-02 stsp static const struct got_error *
558 505287be 2019-03-15 stsp insert_ref(struct got_reflist_entry **newp, struct got_reflist_head *refs,
559 505287be 2019-03-15 stsp struct got_reference *ref, struct got_repository *repo)
561 199a4027 2019-02-02 stsp const struct got_error *err;
562 199a4027 2019-02-02 stsp struct got_object_id *id;
563 6249107b 2019-03-15 stsp struct got_reflist_entry *new, *re, *prev = NULL;
566 505287be 2019-03-15 stsp *newp = NULL;
568 7a3c76f5 2019-02-05 stsp err = got_ref_resolve(&id, repo, ref);
570 7a3c76f5 2019-02-05 stsp return err;
572 6fdbf7b0 2019-03-15 stsp new = malloc(sizeof(*new));
573 7a3c76f5 2019-02-05 stsp if (new == NULL) {
575 230a42bd 2019-05-11 jcs return got_error_prefix_errno("malloc");
577 7a3c76f5 2019-02-05 stsp new->ref = ref;
578 7a3c76f5 2019-02-05 stsp new->id = id;
579 505287be 2019-03-15 stsp *newp = new;
582 29b5c214 2019-02-04 stsp * We must de-duplicate entries on insert because packed-refs may
583 29b5c214 2019-02-04 stsp * contain redundant entries. On-disk refs take precedence.
584 29b5c214 2019-02-04 stsp * This code assumes that on-disk revs are read before packed-refs.
585 e397b6db 2019-02-04 stsp * We're iterating the list anyway, so insert elements sorted by name.
587 7a3c76f5 2019-02-05 stsp re = SIMPLEQ_FIRST(refs);
588 7a3c76f5 2019-02-05 stsp while (re) {
589 7a3c76f5 2019-02-05 stsp cmp = got_path_cmp(got_ref_get_name(re->ref),
590 27a1ed03 2019-03-15 stsp got_ref_get_name(new->ref));
591 e397b6db 2019-02-04 stsp if (cmp == 0) {
592 27a1ed03 2019-03-15 stsp /* duplicate */
593 27a1ed03 2019-03-15 stsp free(new->id);
595 505287be 2019-03-15 stsp *newp = NULL;
596 7a3c76f5 2019-02-05 stsp return NULL;
597 7a3c76f5 2019-02-05 stsp } else if (cmp > 0) {
599 7a3c76f5 2019-02-05 stsp SIMPLEQ_INSERT_AFTER(refs, prev, new, entry);
601 7a3c76f5 2019-02-05 stsp SIMPLEQ_INSERT_HEAD(refs, new, entry);
602 7a3c76f5 2019-02-05 stsp return NULL;
605 7a3c76f5 2019-02-05 stsp re = SIMPLEQ_NEXT(re, entry);
609 7a3c76f5 2019-02-05 stsp SIMPLEQ_INSERT_TAIL(refs, new, entry);
610 199a4027 2019-02-02 stsp return NULL;
613 a04f49d2 2019-02-04 stsp static const struct got_error *
614 29b5c214 2019-02-04 stsp gather_on_disk_refs(struct got_reflist_head *refs, const char *path_refs,
615 a04f49d2 2019-02-04 stsp const char *subdir, struct got_repository *repo)
617 a04f49d2 2019-02-04 stsp const struct got_error *err = NULL;
618 a04f49d2 2019-02-04 stsp DIR *d = NULL;
619 a04f49d2 2019-02-04 stsp char *path_subdir;
621 a04f49d2 2019-02-04 stsp if (asprintf(&path_subdir, "%s/%s", path_refs, subdir) == -1)
622 230a42bd 2019-05-11 jcs return got_error_prefix_errno("asprintf");
624 a04f49d2 2019-02-04 stsp d = opendir(path_subdir);
625 a04f49d2 2019-02-04 stsp if (d == NULL)
628 a04f49d2 2019-02-04 stsp while (1) {
629 a04f49d2 2019-02-04 stsp struct dirent *dent;
630 a04f49d2 2019-02-04 stsp struct got_reference *ref;
631 a04f49d2 2019-02-04 stsp char *child;
633 a04f49d2 2019-02-04 stsp dent = readdir(d);
634 a04f49d2 2019-02-04 stsp if (dent == NULL)
637 a04f49d2 2019-02-04 stsp if (strcmp(dent->d_name, ".") == 0 ||
638 a04f49d2 2019-02-04 stsp strcmp(dent->d_name, "..") == 0)
641 a04f49d2 2019-02-04 stsp switch (dent->d_type) {
642 a04f49d2 2019-02-04 stsp case DT_REG:
643 a04f49d2 2019-02-04 stsp err = open_ref(&ref, path_refs, subdir, dent->d_name);
647 505287be 2019-03-15 stsp struct got_reflist_entry *new;
648 505287be 2019-03-15 stsp err = insert_ref(&new, refs, ref, repo);
649 505287be 2019-03-15 stsp if (err || new == NULL /* duplicate */)
650 505287be 2019-03-15 stsp got_ref_close(ref);
655 a04f49d2 2019-02-04 stsp case DT_DIR:
656 a04f49d2 2019-02-04 stsp if (asprintf(&child, "%s%s%s", subdir,
657 a04f49d2 2019-02-04 stsp subdir[0] == '\0' ? "" : "/", dent->d_name) == -1) {
658 230a42bd 2019-05-11 jcs err = got_error_prefix_errno("asprintf");
661 29b5c214 2019-02-04 stsp err = gather_on_disk_refs(refs, path_refs, child, repo);
662 a04f49d2 2019-02-04 stsp free(child);
670 a04f49d2 2019-02-04 stsp closedir(d);
671 a04f49d2 2019-02-04 stsp free(path_subdir);
672 a04f49d2 2019-02-04 stsp return err;
675 199a4027 2019-02-02 stsp const struct got_error *
676 199a4027 2019-02-02 stsp got_ref_list(struct got_reflist_head *refs, struct got_repository *repo)
678 199a4027 2019-02-02 stsp const struct got_error *err;
679 a04f49d2 2019-02-04 stsp char *packed_refs_path, *path_refs = NULL;
680 29b5c214 2019-02-04 stsp FILE *f = NULL;
681 199a4027 2019-02-02 stsp struct got_reference *ref;
682 505287be 2019-03-15 stsp struct got_reflist_entry *new;
684 29b5c214 2019-02-04 stsp /* HEAD ref should always exist. */
685 29b5c214 2019-02-04 stsp path_refs = get_refs_dir_path(repo, GOT_REF_HEAD);
686 29b5c214 2019-02-04 stsp if (path_refs == NULL) {
687 230a42bd 2019-05-11 jcs err = got_error_prefix_errno("get_refs_dir_path");
690 29b5c214 2019-02-04 stsp err = open_ref(&ref, path_refs, "", GOT_REF_HEAD);
693 505287be 2019-03-15 stsp err = insert_ref(&new, refs, ref, repo);
694 505287be 2019-03-15 stsp if (err || new == NULL /* duplicate */)
695 505287be 2019-03-15 stsp got_ref_close(ref);
699 29b5c214 2019-02-04 stsp /* Gather on-disk refs before parsing packed-refs. */
700 29b5c214 2019-02-04 stsp free(path_refs);
701 29b5c214 2019-02-04 stsp path_refs = get_refs_dir_path(repo, "");
702 29b5c214 2019-02-04 stsp if (path_refs == NULL) {
703 230a42bd 2019-05-11 jcs err = got_error_prefix_errno("get_refs_dir_path");
706 29b5c214 2019-02-04 stsp err = gather_on_disk_refs(refs, path_refs, "", repo);
711 29b5c214 2019-02-04 stsp * The packed-refs file may contain redundant entries, in which
712 29b5c214 2019-02-04 stsp * case on-disk refs take precedence.
714 199a4027 2019-02-02 stsp packed_refs_path = got_repo_get_path_packed_refs(repo);
715 29b5c214 2019-02-04 stsp if (packed_refs_path == NULL) {
716 230a42bd 2019-05-11 jcs err = got_error_prefix_errno("got_repo_get_path_packed_refs");
720 199a4027 2019-02-02 stsp f = fopen(packed_refs_path, "r");
721 199a4027 2019-02-02 stsp free(packed_refs_path);
723 199a4027 2019-02-02 stsp char *line;
724 199a4027 2019-02-02 stsp size_t len;
725 199a4027 2019-02-02 stsp const char delim[3] = {'\0', '\0', '\0'};
726 199a4027 2019-02-02 stsp while (1) {
727 199a4027 2019-02-02 stsp line = fparseln(f, &len, NULL, delim, 0);
728 0bb4abae 2019-03-15 stsp if (line == NULL) {
729 0bb4abae 2019-03-15 stsp if (feof(f))
731 0bb4abae 2019-03-15 stsp err = got_ferror(f, GOT_ERR_BAD_REF_DATA);
734 199a4027 2019-02-02 stsp err = parse_packed_ref_line(&ref, NULL, line);
735 0bb4abae 2019-03-15 stsp free(line);
739 505287be 2019-03-15 stsp err = insert_ref(&new, refs, ref, repo);
740 505287be 2019-03-15 stsp if (err || new == NULL /* duplicate */)
741 505287be 2019-03-15 stsp got_ref_close(ref);
748 a04f49d2 2019-02-04 stsp free(path_refs);
749 fb43ecf1 2019-02-11 stsp if (f && fclose(f) != 0 && err == NULL)
750 230a42bd 2019-05-11 jcs err = got_error_prefix_errno("fclose");
751 199a4027 2019-02-02 stsp return err;
755 e2e879a0 2019-03-11 stsp got_ref_list_free(struct got_reflist_head *refs)
757 e2e879a0 2019-03-11 stsp struct got_reflist_entry *re;
759 e2e879a0 2019-03-11 stsp while (!SIMPLEQ_EMPTY(refs)) {
760 e2e879a0 2019-03-11 stsp re = SIMPLEQ_FIRST(refs);
761 e2e879a0 2019-03-11 stsp SIMPLEQ_REMOVE_HEAD(refs, entry);
762 e2e879a0 2019-03-11 stsp got_ref_close(re->ref);
763 e2e879a0 2019-03-11 stsp free(re->id);
770 b249b824 2019-05-09 stsp got_ref_is_symbolic(struct got_reference *ref)
772 b249b824 2019-05-09 stsp return (ref->flags & GOT_REF_IS_SYMBOLIC);
775 b249b824 2019-05-09 stsp const struct got_error *
776 b249b824 2019-05-09 stsp got_ref_change_ref(struct got_reference *ref, struct got_object_id *id)
778 b249b824 2019-05-09 stsp if (ref->flags & GOT_REF_IS_SYMBOLIC)
779 b249b824 2019-05-09 stsp return got_error(GOT_ERR_BAD_REF_TYPE);
781 b249b824 2019-05-09 stsp memcpy(ref->ref.ref.sha1, id->sha1, sizeof(ref->ref.ref.sha1));
782 b249b824 2019-05-09 stsp return NULL;
785 9e672c74 2019-03-11 stsp const struct got_error *
786 b249b824 2019-05-09 stsp got_ref_change_symref(struct got_reference *ref, char *refname)
788 b249b824 2019-05-09 stsp char *new_name;
790 b249b824 2019-05-09 stsp if ((ref->flags & GOT_REF_IS_SYMBOLIC) == 0)
791 b249b824 2019-05-09 stsp return got_error(GOT_ERR_BAD_REF_TYPE);
793 b249b824 2019-05-09 stsp new_name = strdup(refname);
794 b249b824 2019-05-09 stsp if (new_name == NULL)
795 230a42bd 2019-05-11 jcs return got_error_prefix_errno("strdup");
797 b249b824 2019-05-09 stsp free(ref->ref.symref.name);
798 b249b824 2019-05-09 stsp ref->ref.symref.name = new_name;
799 b249b824 2019-05-09 stsp return NULL;
802 b249b824 2019-05-09 stsp const struct got_error *
803 9e672c74 2019-03-11 stsp got_ref_write(struct got_reference *ref, struct got_repository *repo)
805 9e672c74 2019-03-11 stsp const struct got_error *err = NULL, *unlock_err = NULL;
806 9e672c74 2019-03-11 stsp const char *name = got_ref_get_name(ref);
807 9e672c74 2019-03-11 stsp char *path_refs = NULL, *path = NULL, *tmppath = NULL;
808 9e672c74 2019-03-11 stsp struct got_lockfile *lf = NULL;
809 9e672c74 2019-03-11 stsp FILE *f = NULL;
811 9e672c74 2019-03-11 stsp struct stat sb;
813 9e672c74 2019-03-11 stsp path_refs = get_refs_dir_path(repo, name);
814 9e672c74 2019-03-11 stsp if (path_refs == NULL) {
815 230a42bd 2019-05-11 jcs err = got_error_prefix_errno2("get_refs_dir_path", name);
819 9e672c74 2019-03-11 stsp if (asprintf(&path, "%s/%s", path_refs, name) == -1) {
820 230a42bd 2019-05-11 jcs err = got_error_prefix_errno("asprintf");
824 9e672c74 2019-03-11 stsp err = got_opentemp_named(&tmppath, &f, path);
826 d1667f0d 2019-03-11 stsp char *parent;
827 49c7094f 2019-03-11 stsp if (!(err->code == GOT_ERR_ERRNO && errno == ENOENT))
829 d1667f0d 2019-03-11 stsp err = got_path_dirname(&parent, path);
832 0cd1c46a 2019-03-11 stsp err = got_path_mkdir(parent);
833 5e1c9f23 2019-03-11 stsp free(parent);
836 0cd1c46a 2019-03-11 stsp err = got_opentemp_named(&tmppath, &f, path);
841 9e672c74 2019-03-11 stsp if (ref->flags & GOT_REF_IS_SYMBOLIC) {
842 9e672c74 2019-03-11 stsp n = fprintf(f, "ref: %s\n", ref->ref.symref.ref);
843 9e672c74 2019-03-11 stsp if (n != strlen(ref->ref.symref.ref) + 6) {
844 9e672c74 2019-03-11 stsp err = got_ferror(f, GOT_ERR_IO);
848 9e672c74 2019-03-11 stsp char hex[SHA1_DIGEST_STRING_LENGTH];
849 9e672c74 2019-03-11 stsp if (got_sha1_digest_to_str(ref->ref.ref.sha1, hex,
850 9e672c74 2019-03-11 stsp sizeof(hex)) == NULL) {
851 9e672c74 2019-03-11 stsp err = got_error(GOT_ERR_BAD_REF_DATA);
854 9e672c74 2019-03-11 stsp n = fprintf(f, "%s\n", hex);
855 8fa2f096 2019-03-11 stsp if (n != sizeof(hex)) {
856 9e672c74 2019-03-11 stsp err = got_ferror(f, GOT_ERR_IO);
861 9e672c74 2019-03-11 stsp err = got_lockfile_lock(&lf, path);
865 9e672c74 2019-03-11 stsp /* XXX: check if old content matches our expectations? */
867 0cd1c46a 2019-03-11 stsp if (stat(path, &sb) != 0) {
868 0cd1c46a 2019-03-11 stsp if (errno != ENOENT) {
869 230a42bd 2019-05-11 jcs err = got_error_prefix_errno2("stat", path);
872 0cd1c46a 2019-03-11 stsp sb.st_mode = GOT_DEFAULT_FILE_MODE;
875 9e672c74 2019-03-11 stsp if (rename(tmppath, path) != 0) {
876 230a42bd 2019-05-11 jcs err = got_error_prefix_errno3("rename", tmppath, path);
879 9e672c74 2019-03-11 stsp free(tmppath);
880 9e672c74 2019-03-11 stsp tmppath = NULL;
882 9e672c74 2019-03-11 stsp if (chmod(path, sb.st_mode) != 0) {
883 230a42bd 2019-05-11 jcs err = got_error_prefix_errno2("chmod", path);
888 9e672c74 2019-03-11 stsp unlock_err = got_lockfile_unlock(lf);
890 9e672c74 2019-03-11 stsp if (fclose(f) != 0 && err == NULL)
891 230a42bd 2019-05-11 jcs err = got_error_prefix_errno("fclose");
893 9e672c74 2019-03-11 stsp free(path_refs);
894 9e672c74 2019-03-11 stsp free(path);
895 9e672c74 2019-03-11 stsp if (tmppath) {
896 9e672c74 2019-03-11 stsp if (unlink(tmppath) != 0 && err == NULL)
897 230a42bd 2019-05-11 jcs err = got_error_prefix_errno2("unlink", tmppath);
898 9e672c74 2019-03-11 stsp free(tmppath);
900 2d2e1378 2019-03-11 stsp return err ? err : unlock_err;
903 598a8b91 2019-03-15 stsp static const struct got_error *
904 598a8b91 2019-03-15 stsp delete_packed_ref(struct got_reference *delref, struct got_repository *repo)
906 598a8b91 2019-03-15 stsp const struct got_error *err = NULL, *unlock_err = NULL;
907 598a8b91 2019-03-15 stsp struct got_lockfile *lf = NULL;
908 598a8b91 2019-03-15 stsp FILE *f = NULL, *tmpf = NULL;
909 598a8b91 2019-03-15 stsp char *packed_refs_path, *tmppath = NULL;
910 598a8b91 2019-03-15 stsp struct got_reflist_head refs;
911 598a8b91 2019-03-15 stsp int found_delref = 0;
913 598a8b91 2019-03-15 stsp /* The packed-refs file does not cotain symbolic references. */
914 598a8b91 2019-03-15 stsp if (delref->flags & GOT_REF_IS_SYMBOLIC)
915 598a8b91 2019-03-15 stsp return got_error(GOT_ERR_BAD_REF_DATA);
917 598a8b91 2019-03-15 stsp SIMPLEQ_INIT(&refs);
919 598a8b91 2019-03-15 stsp packed_refs_path = got_repo_get_path_packed_refs(repo);
920 598a8b91 2019-03-15 stsp if (packed_refs_path == NULL)
921 230a42bd 2019-05-11 jcs return got_error_prefix_errno("got_repo_get_path_packed_refs");
923 598a8b91 2019-03-15 stsp err = got_opentemp_named(&tmppath, &tmpf, packed_refs_path);
927 598a8b91 2019-03-15 stsp err = got_lockfile_lock(&lf, packed_refs_path);
931 598a8b91 2019-03-15 stsp f = fopen(packed_refs_path, "r");
932 598a8b91 2019-03-15 stsp if (f == NULL) {
933 230a42bd 2019-05-11 jcs err = got_error_prefix_errno2("fopen", packed_refs_path);
936 598a8b91 2019-03-15 stsp while (1) {
937 598a8b91 2019-03-15 stsp char *line;
938 598a8b91 2019-03-15 stsp size_t len;
939 598a8b91 2019-03-15 stsp const char delim[3] = {'\0', '\0', '\0'};
940 598a8b91 2019-03-15 stsp struct got_reference *ref;
941 598a8b91 2019-03-15 stsp struct got_reflist_entry *new;
943 598a8b91 2019-03-15 stsp line = fparseln(f, &len, NULL, delim, 0);
944 598a8b91 2019-03-15 stsp if (line == NULL) {
945 598a8b91 2019-03-15 stsp if (feof(f))
947 598a8b91 2019-03-15 stsp err = got_ferror(f, GOT_ERR_BAD_REF_DATA);
950 598a8b91 2019-03-15 stsp err = parse_packed_ref_line(&ref, NULL, line);
951 598a8b91 2019-03-15 stsp free(line);
954 598a8b91 2019-03-15 stsp if (ref == NULL)
957 598a8b91 2019-03-15 stsp if (strcmp(ref->ref.ref.name, delref->ref.ref.name) == 0 &&
958 598a8b91 2019-03-15 stsp memcmp(ref->ref.ref.sha1, delref->ref.ref.sha1,
959 598a8b91 2019-03-15 stsp sizeof(delref->ref.ref.sha1)) == 0) {
960 598a8b91 2019-03-15 stsp found_delref = 1;
961 598a8b91 2019-03-15 stsp got_ref_close(ref);
965 598a8b91 2019-03-15 stsp err = insert_ref(&new, &refs, ref, repo);
966 598a8b91 2019-03-15 stsp if (err || new == NULL /* duplicate */)
967 598a8b91 2019-03-15 stsp got_ref_close(ref);
972 598a8b91 2019-03-15 stsp if (found_delref) {
973 598a8b91 2019-03-15 stsp struct got_reflist_entry *re;
975 598a8b91 2019-03-15 stsp struct stat sb;
977 598a8b91 2019-03-15 stsp n = fprintf(tmpf, "%s\n", GOT_PACKED_REFS_HEADER);
978 598a8b91 2019-03-15 stsp if (n != sizeof(GOT_PACKED_REFS_HEADER)) {
979 598a8b91 2019-03-15 stsp err = got_ferror(f, GOT_ERR_IO);
983 598a8b91 2019-03-15 stsp SIMPLEQ_FOREACH(re, &refs, entry) {
984 598a8b91 2019-03-15 stsp uint8_t hex[SHA1_DIGEST_STRING_LENGTH];
986 598a8b91 2019-03-15 stsp if (got_sha1_digest_to_str(re->ref->ref.ref.sha1, hex,
987 598a8b91 2019-03-15 stsp sizeof(hex)) == NULL) {
988 598a8b91 2019-03-15 stsp err = got_error(GOT_ERR_BAD_REF_DATA);
991 598a8b91 2019-03-15 stsp n = fprintf(tmpf, "%s ", hex);
992 598a8b91 2019-03-15 stsp if (n != sizeof(hex)) {
993 598a8b91 2019-03-15 stsp err = got_ferror(f, GOT_ERR_IO);
996 598a8b91 2019-03-15 stsp n = fprintf(tmpf, "%s\n", re->ref->ref.ref.name);
997 598a8b91 2019-03-15 stsp if (n != strlen(re->ref->ref.ref.name) + 1) {
998 598a8b91 2019-03-15 stsp err = got_ferror(f, GOT_ERR_IO);
1003 598a8b91 2019-03-15 stsp if (fflush(tmpf) != 0) {
1004 230a42bd 2019-05-11 jcs err = got_error_prefix_errno("fflush");
1005 598a8b91 2019-03-15 stsp goto done;
1008 598a8b91 2019-03-15 stsp if (stat(packed_refs_path, &sb) != 0) {
1009 598a8b91 2019-03-15 stsp if (errno != ENOENT) {
1010 230a42bd 2019-05-11 jcs err = got_error_prefix_errno2("stat",
1011 230a42bd 2019-05-11 jcs packed_refs_path);
1012 598a8b91 2019-03-15 stsp goto done;
1014 598a8b91 2019-03-15 stsp sb.st_mode = GOT_DEFAULT_FILE_MODE;
1017 598a8b91 2019-03-15 stsp if (rename(tmppath, packed_refs_path) != 0) {
1018 230a42bd 2019-05-11 jcs err = got_error_prefix_errno3("rename", tmppath,
1019 230a42bd 2019-05-11 jcs packed_refs_path);
1020 598a8b91 2019-03-15 stsp goto done;
1023 598a8b91 2019-03-15 stsp if (chmod(packed_refs_path, sb.st_mode) != 0) {
1024 230a42bd 2019-05-11 jcs err = got_error_prefix_errno2("chmod",
1025 230a42bd 2019-05-11 jcs packed_refs_path);
1026 598a8b91 2019-03-15 stsp goto done;
1031 598a8b91 2019-03-15 stsp unlock_err = got_lockfile_unlock(lf);
1033 598a8b91 2019-03-15 stsp if (fclose(f) != 0 && err == NULL)
1034 230a42bd 2019-05-11 jcs err = got_error_prefix_errno("fclose");
1036 598a8b91 2019-03-15 stsp if (tmpf) {
1037 598a8b91 2019-03-15 stsp unlink(tmppath);
1038 598a8b91 2019-03-15 stsp if (fclose(tmpf) != 0 && err == NULL)
1039 230a42bd 2019-05-11 jcs err = got_error_prefix_errno("fclose");
1041 598a8b91 2019-03-15 stsp free(tmppath);
1042 598a8b91 2019-03-15 stsp free(packed_refs_path);
1043 598a8b91 2019-03-15 stsp got_ref_list_free(&refs);
1044 598a8b91 2019-03-15 stsp return err ? err : unlock_err;
1047 2d2e1378 2019-03-11 stsp const struct got_error *
1048 2d2e1378 2019-03-11 stsp got_ref_delete(struct got_reference *ref, struct got_repository *repo)
1050 2d2e1378 2019-03-11 stsp const struct got_error *err = NULL, *unlock_err = NULL;
1051 2d2e1378 2019-03-11 stsp const char *name = got_ref_get_name(ref);
1052 2d2e1378 2019-03-11 stsp char *path_refs = NULL, *path = NULL;
1053 2d2e1378 2019-03-11 stsp struct got_lockfile *lf = NULL;
1055 598a8b91 2019-03-15 stsp if (ref->flags & GOT_REF_IS_PACKED)
1056 598a8b91 2019-03-15 stsp return delete_packed_ref(ref, repo);
1058 2d2e1378 2019-03-11 stsp path_refs = get_refs_dir_path(repo, name);
1059 2d2e1378 2019-03-11 stsp if (path_refs == NULL) {
1060 230a42bd 2019-05-11 jcs err = got_error_prefix_errno2("get_refs_dir_path", name);
1061 2d2e1378 2019-03-11 stsp goto done;
1064 2d2e1378 2019-03-11 stsp if (asprintf(&path, "%s/%s", path_refs, name) == -1) {
1065 230a42bd 2019-05-11 jcs err = got_error_prefix_errno("asprintf");
1066 2d2e1378 2019-03-11 stsp goto done;
1069 2d2e1378 2019-03-11 stsp err = got_lockfile_lock(&lf, path);
1071 2d2e1378 2019-03-11 stsp goto done;
1073 2d2e1378 2019-03-11 stsp /* XXX: check if old content matches our expectations? */
1075 2d2e1378 2019-03-11 stsp if (unlink(path) != 0)
1076 230a42bd 2019-05-11 jcs err = got_error_prefix_errno2("unlink", path);
1079 2d2e1378 2019-03-11 stsp unlock_err = got_lockfile_unlock(lf);
1081 2d2e1378 2019-03-11 stsp free(path_refs);
1082 2d2e1378 2019-03-11 stsp free(path);
1083 9e672c74 2019-03-11 stsp return err ? err : unlock_err;
