2 5aa81393 2020-01-06 stsp * Copyright (c) 2018, 2019, 2020 Stefan Sperling <stsp@openbsd.org>
4 a440fac0 2018-09-06 stsp * Permission to use, copy, modify, and distribute this software for any
5 a440fac0 2018-09-06 stsp * purpose with or without fee is hereby granted, provided that the above
6 a440fac0 2018-09-06 stsp * copyright notice and this permission notice appear in all copies.
8 a440fac0 2018-09-06 stsp * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 a440fac0 2018-09-06 stsp * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 a440fac0 2018-09-06 stsp * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 a440fac0 2018-09-06 stsp * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 a440fac0 2018-09-06 stsp * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 a440fac0 2018-09-06 stsp * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 a440fac0 2018-09-06 stsp * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 a440fac0 2018-09-06 stsp #include <sys/types.h>
18 a440fac0 2018-09-06 stsp #include <sys/stat.h>
19 a440fac0 2018-09-06 stsp #include <sys/queue.h>
20 f8b19efd 2021-10-13 stsp #include <sys/tree.h>
21 a440fac0 2018-09-06 stsp #include <sys/uio.h>
22 a440fac0 2018-09-06 stsp #include <sys/socket.h>
23 a440fac0 2018-09-06 stsp #include <sys/wait.h>
24 64a8571e 2022-01-07 stsp #include <sys/mman.h>
26 a440fac0 2018-09-06 stsp #include <errno.h>
27 a440fac0 2018-09-06 stsp #include <stdio.h>
28 a440fac0 2018-09-06 stsp #include <stdlib.h>
29 a440fac0 2018-09-06 stsp #include <string.h>
30 a440fac0 2018-09-06 stsp #include <stdint.h>
31 a440fac0 2018-09-06 stsp #include <sha1.h>
32 a440fac0 2018-09-06 stsp #include <zlib.h>
33 a440fac0 2018-09-06 stsp #include <ctype.h>
34 a440fac0 2018-09-06 stsp #include <limits.h>
35 a440fac0 2018-09-06 stsp #include <imsg.h>
36 a440fac0 2018-09-06 stsp #include <time.h>
37 ad242220 2018-09-08 stsp #include <unistd.h>
39 a440fac0 2018-09-06 stsp #include "got_error.h"
40 a440fac0 2018-09-06 stsp #include "got_object.h"
41 a440fac0 2018-09-06 stsp #include "got_repository.h"
42 a440fac0 2018-09-06 stsp #include "got_opentemp.h"
43 324d37e7 2019-05-11 stsp #include "got_path.h"
45 a440fac0 2018-09-06 stsp #include "got_lib_sha1.h"
46 a440fac0 2018-09-06 stsp #include "got_lib_delta.h"
47 41fa1437 2018-11-05 stsp #include "got_lib_inflate.h"
48 41fa1437 2018-11-05 stsp #include "got_lib_object.h"
49 3022d272 2019-11-14 stsp #include "got_lib_object_parse.h"
50 6bef87be 2018-09-11 stsp #include "got_lib_object_cache.h"
51 15a94983 2018-12-23 stsp #include "got_lib_pack.h"
52 ad242220 2018-09-08 stsp #include "got_lib_repository.h"
54 a440fac0 2018-09-06 stsp #ifndef nitems
55 a440fac0 2018-09-06 stsp #define nitems(_a) (sizeof(_a) / sizeof((_a)[0]))
58 ca6e02ac 2020-01-07 stsp struct got_object_id *
59 ca6e02ac 2020-01-07 stsp got_object_id_dup(struct got_object_id *id1)
61 ca6e02ac 2020-01-07 stsp struct got_object_id *id2;
63 ca6e02ac 2020-01-07 stsp id2 = malloc(sizeof(*id2));
64 ca6e02ac 2020-01-07 stsp if (id2 == NULL)
65 ca6e02ac 2020-01-07 stsp return NULL;
66 ca6e02ac 2020-01-07 stsp memcpy(id2, id1, sizeof(*id2));
71 f054b67a 2018-11-05 stsp got_object_id_cmp(const struct got_object_id *id1,
72 f054b67a 2018-11-05 stsp const struct got_object_id *id2)
74 f054b67a 2018-11-05 stsp return memcmp(id1->sha1, id2->sha1, SHA1_DIGEST_LENGTH);
77 2ff12563 2018-09-15 stsp const struct got_error *
78 5df4932d 2018-11-05 stsp got_object_qid_alloc_partial(struct got_object_qid **qid)
80 5df4932d 2018-11-05 stsp *qid = malloc(sizeof(**qid));
81 5df4932d 2018-11-05 stsp if (*qid == NULL)
82 638f9024 2019-05-13 stsp return got_error_from_errno("malloc");
84 74a2356f 2021-06-18 stsp (*qid)->data = NULL;
85 5df4932d 2018-11-05 stsp return NULL;
88 5df4932d 2018-11-05 stsp const struct got_error *
89 2ff12563 2018-09-15 stsp got_object_id_str(char **outbuf, struct got_object_id *id)
91 bbc740ac 2023-02-04 op static const size_t len = GOT_OBJECT_ID_HEX_MAXLEN;
93 2ff12563 2018-09-15 stsp *outbuf = malloc(len);
94 2ff12563 2018-09-15 stsp if (*outbuf == NULL)
95 638f9024 2019-05-13 stsp return got_error_from_errno("malloc");
97 bbc740ac 2023-02-04 op if (got_object_id_hex(id, *outbuf, len) == NULL) {
98 2ff12563 2018-09-15 stsp free(*outbuf);
99 2ff12563 2018-09-15 stsp *outbuf = NULL;
100 2ff12563 2018-09-15 stsp return got_error(GOT_ERR_BAD_OBJ_ID_STR);
103 2ff12563 2018-09-15 stsp return NULL;
107 bbc740ac 2023-02-04 op got_object_id_hex(struct got_object_id *id, char *buf, size_t len)
109 bbc740ac 2023-02-04 op return got_sha1_digest_to_str(id->sha1, buf, len);
113 03fa71c8 2018-09-06 stsp got_object_close(struct got_object *obj)
115 03fa71c8 2018-09-06 stsp if (obj->refcnt > 0) {
116 03fa71c8 2018-09-06 stsp obj->refcnt--;
117 03fa71c8 2018-09-06 stsp if (obj->refcnt > 0)
121 03fa71c8 2018-09-06 stsp if (obj->flags & GOT_OBJ_FLAG_DELTIFIED) {
122 03fa71c8 2018-09-06 stsp struct got_delta *delta;
123 dbdddfee 2021-06-23 naddy while (!STAILQ_EMPTY(&obj->deltas.entries)) {
124 dbdddfee 2021-06-23 naddy delta = STAILQ_FIRST(&obj->deltas.entries);
125 dbdddfee 2021-06-23 naddy STAILQ_REMOVE_HEAD(&obj->deltas.entries, entry);
126 2256993b 2019-07-15 stsp free(delta);
132 d3c116bf 2021-10-15 stsp const struct got_error *
133 d3c116bf 2021-10-15 stsp got_object_raw_close(struct got_raw_object *obj)
135 d3c116bf 2021-10-15 stsp const struct got_error *err = NULL;
137 d3c116bf 2021-10-15 stsp if (obj->refcnt > 0) {
138 d3c116bf 2021-10-15 stsp obj->refcnt--;
139 d3c116bf 2021-10-15 stsp if (obj->refcnt > 0)
140 d3c116bf 2021-10-15 stsp return NULL;
143 13b2bc37 2022-10-23 stsp if (obj->close_cb)
144 13b2bc37 2022-10-23 stsp obj->close_cb(obj);
146 64a8571e 2022-01-07 stsp if (obj->f == NULL) {
147 64a8571e 2022-01-07 stsp if (obj->fd != -1) {
148 64a8571e 2022-01-07 stsp if (munmap(obj->data, obj->hdrlen + obj->size) == -1)
149 64a8571e 2022-01-07 stsp err = got_error_from_errno("munmap");
150 64a8571e 2022-01-07 stsp if (close(obj->fd) == -1 && err == NULL)
151 64a8571e 2022-01-07 stsp err = got_error_from_errno("close");
153 64a8571e 2022-01-07 stsp free(obj->data);
155 64a8571e 2022-01-07 stsp if (fclose(obj->f) == EOF && err == NULL)
156 64a8571e 2022-01-07 stsp err = got_error_from_errno("fclose");
159 d3c116bf 2021-10-15 stsp return err;
163 03fa71c8 2018-09-06 stsp got_object_qid_free(struct got_object_qid *qid)
169 dd88155e 2019-06-29 stsp got_object_id_queue_free(struct got_object_id_queue *ids)
171 dd88155e 2019-06-29 stsp struct got_object_qid *qid;
173 dbdddfee 2021-06-23 naddy while (!STAILQ_EMPTY(ids)) {
174 dbdddfee 2021-06-23 naddy qid = STAILQ_FIRST(ids);
175 dbdddfee 2021-06-23 naddy STAILQ_REMOVE_HEAD(ids, entry);
176 dd88155e 2019-06-29 stsp got_object_qid_free(qid);
180 1785f84a 2018-12-23 stsp const struct got_error *
181 1785f84a 2018-12-23 stsp got_object_parse_header(struct got_object **obj, char *buf, size_t len)
183 ff2a4428 2019-03-19 stsp const char *obj_labels[] = {
184 ff2a4428 2019-03-19 stsp GOT_OBJ_LABEL_COMMIT,
185 ff2a4428 2019-03-19 stsp GOT_OBJ_LABEL_TREE,
186 ff2a4428 2019-03-19 stsp GOT_OBJ_LABEL_BLOB,
187 ff2a4428 2019-03-19 stsp GOT_OBJ_LABEL_TAG,
189 1785f84a 2018-12-23 stsp const int obj_types[] = {
190 1785f84a 2018-12-23 stsp GOT_OBJ_TYPE_COMMIT,
191 1785f84a 2018-12-23 stsp GOT_OBJ_TYPE_TREE,
192 1785f84a 2018-12-23 stsp GOT_OBJ_TYPE_BLOB,
193 1785f84a 2018-12-23 stsp GOT_OBJ_TYPE_TAG,
195 1785f84a 2018-12-23 stsp int type = 0;
196 c7b17232 2022-01-28 stsp size_t size = 0;
200 1785f84a 2018-12-23 stsp *obj = NULL;
202 c7b17232 2022-01-28 stsp end = memchr(buf, '\0', len);
203 c7b17232 2022-01-28 stsp if (end == NULL)
204 9ef4ac16 2019-04-13 stsp return got_error(GOT_ERR_BAD_OBJ_HDR);
206 ff2a4428 2019-03-19 stsp for (i = 0; i < nitems(obj_labels); i++) {
207 ff2a4428 2019-03-19 stsp const char *label = obj_labels[i];
208 ff2a4428 2019-03-19 stsp size_t label_len = strlen(label);
209 1785f84a 2018-12-23 stsp const char *errstr;
211 c7b17232 2022-01-28 stsp if (len <= label_len || buf + label_len >= end ||
212 c7b17232 2022-01-28 stsp strncmp(buf, label, label_len) != 0)
215 1785f84a 2018-12-23 stsp type = obj_types[i];
216 ff2a4428 2019-03-19 stsp size = strtonum(buf + label_len, 0, LONG_MAX, &errstr);
217 1785f84a 2018-12-23 stsp if (errstr != NULL)
218 1785f84a 2018-12-23 stsp return got_error(GOT_ERR_BAD_OBJ_HDR);
222 1785f84a 2018-12-23 stsp if (type == 0)
223 1785f84a 2018-12-23 stsp return got_error(GOT_ERR_BAD_OBJ_HDR);
225 1785f84a 2018-12-23 stsp *obj = calloc(1, sizeof(**obj));
226 1785f84a 2018-12-23 stsp if (*obj == NULL)
227 638f9024 2019-05-13 stsp return got_error_from_errno("calloc");
228 1785f84a 2018-12-23 stsp (*obj)->type = type;
229 c7b17232 2022-01-28 stsp (*obj)->hdrlen = end - buf + 1;
230 1785f84a 2018-12-23 stsp (*obj)->size = size;
231 1785f84a 2018-12-23 stsp return NULL;
234 1785f84a 2018-12-23 stsp const struct got_error *
235 1785f84a 2018-12-23 stsp got_object_read_header(struct got_object **obj, int fd)
237 1785f84a 2018-12-23 stsp const struct got_error *err;
238 23bc48a9 2019-03-19 stsp struct got_inflate_buf zb;
239 31e61ec1 2021-09-28 naddy uint8_t *buf;
240 1785f84a 2018-12-23 stsp const size_t zbsize = 64;
241 1785f84a 2018-12-23 stsp size_t outlen, totlen;
242 1785f84a 2018-12-23 stsp int nbuf = 1;
244 1785f84a 2018-12-23 stsp *obj = NULL;
246 1785f84a 2018-12-23 stsp buf = malloc(zbsize);
247 1785f84a 2018-12-23 stsp if (buf == NULL)
248 638f9024 2019-05-13 stsp return got_error_from_errno("malloc");
249 c7b17232 2022-01-28 stsp buf[0] = '\0';
251 1e87a3c3 2020-03-18 stsp err = got_inflate_init(&zb, buf, zbsize, NULL);
253 1785f84a 2018-12-23 stsp return err;
255 1785f84a 2018-12-23 stsp totlen = 0;
257 3ab5e33c 2020-03-18 stsp err = got_inflate_read_fd(&zb, fd, &outlen, NULL);
260 1785f84a 2018-12-23 stsp if (outlen == 0)
262 1785f84a 2018-12-23 stsp totlen += outlen;
263 dedbbd9d 2019-04-13 stsp if (memchr(zb.outbuf, '\0', outlen) == NULL) {
264 31e61ec1 2021-09-28 naddy uint8_t *newbuf;
266 1785f84a 2018-12-23 stsp newbuf = recallocarray(buf, nbuf - 1, nbuf, zbsize);
267 1785f84a 2018-12-23 stsp if (newbuf == NULL) {
268 638f9024 2019-05-13 stsp err = got_error_from_errno("recallocarray");
271 1785f84a 2018-12-23 stsp buf = newbuf;
272 1785f84a 2018-12-23 stsp zb.outbuf = newbuf + totlen;
273 1785f84a 2018-12-23 stsp zb.outlen = (nbuf * zbsize) - totlen;
275 dedbbd9d 2019-04-13 stsp } while (memchr(zb.outbuf, '\0', outlen) == NULL);
277 1785f84a 2018-12-23 stsp err = got_object_parse_header(obj, buf, totlen);
280 1785f84a 2018-12-23 stsp got_inflate_end(&zb);
281 1785f84a 2018-12-23 stsp return err;
284 13b2bc37 2022-10-23 stsp const struct got_error *
285 13b2bc37 2022-10-23 stsp got_object_read_raw(uint8_t **outbuf, off_t *size, size_t *hdrlen,
286 13b2bc37 2022-10-23 stsp size_t max_in_mem_size, int outfd, struct got_object_id *expected_id,
289 13b2bc37 2022-10-23 stsp const struct got_error *err = NULL;
290 13b2bc37 2022-10-23 stsp struct got_object *obj;
291 13b2bc37 2022-10-23 stsp struct got_inflate_checksum csum;
292 13b2bc37 2022-10-23 stsp uint8_t sha1[SHA1_DIGEST_LENGTH];
293 13b2bc37 2022-10-23 stsp SHA1_CTX sha1_ctx;
294 13b2bc37 2022-10-23 stsp size_t len, consumed;
295 13b2bc37 2022-10-23 stsp FILE *f = NULL;
297 13b2bc37 2022-10-23 stsp *outbuf = NULL;
299 13b2bc37 2022-10-23 stsp *hdrlen = 0;
301 13b2bc37 2022-10-23 stsp SHA1Init(&sha1_ctx);
302 13b2bc37 2022-10-23 stsp memset(&csum, 0, sizeof(csum));
303 13b2bc37 2022-10-23 stsp csum.output_sha1 = &sha1_ctx;
305 13b2bc37 2022-10-23 stsp if (lseek(infd, SEEK_SET, 0) == -1)
306 13b2bc37 2022-10-23 stsp return got_error_from_errno("lseek");
308 13b2bc37 2022-10-23 stsp err = got_object_read_header(&obj, infd);
310 13b2bc37 2022-10-23 stsp return err;
312 13b2bc37 2022-10-23 stsp if (lseek(infd, SEEK_SET, 0) == -1)
313 13b2bc37 2022-10-23 stsp return got_error_from_errno("lseek");
315 13b2bc37 2022-10-23 stsp if (obj->size + obj->hdrlen <= max_in_mem_size) {
316 13b2bc37 2022-10-23 stsp err = got_inflate_to_mem_fd(outbuf, &len, &consumed, &csum,
317 13b2bc37 2022-10-23 stsp obj->size + obj->hdrlen, infd);
321 13b2bc37 2022-10-23 stsp * XXX This uses an extra file descriptor for no good reason.
322 13b2bc37 2022-10-23 stsp * We should have got_inflate_fd_to_fd().
324 13b2bc37 2022-10-23 stsp fd = dup(infd);
325 13b2bc37 2022-10-23 stsp if (fd == -1)
326 13b2bc37 2022-10-23 stsp return got_error_from_errno("dup");
327 13b2bc37 2022-10-23 stsp f = fdopen(fd, "r");
328 13b2bc37 2022-10-23 stsp if (f == NULL) {
329 13b2bc37 2022-10-23 stsp err = got_error_from_errno("fdopen");
334 13b2bc37 2022-10-23 stsp err = got_inflate_to_fd(&len, f, &csum, outfd);
339 13b2bc37 2022-10-23 stsp if (len < obj->hdrlen || len != obj->hdrlen + obj->size) {
340 13b2bc37 2022-10-23 stsp err = got_error(GOT_ERR_BAD_OBJ_HDR);
344 13b2bc37 2022-10-23 stsp SHA1Final(sha1, &sha1_ctx);
345 13b2bc37 2022-10-23 stsp if (memcmp(expected_id->sha1, sha1, SHA1_DIGEST_LENGTH) != 0) {
346 3c23f6cd 2023-02-04 op err = got_error_checksum(expected_id);
350 13b2bc37 2022-10-23 stsp *size = obj->size;
351 13b2bc37 2022-10-23 stsp *hdrlen = obj->hdrlen;
353 13b2bc37 2022-10-23 stsp got_object_close(obj);
354 13b2bc37 2022-10-23 stsp if (f && fclose(f) == EOF && err == NULL)
355 13b2bc37 2022-10-23 stsp err = got_error_from_errno("fclose");
356 13b2bc37 2022-10-23 stsp return err;
359 a440fac0 2018-09-06 stsp struct got_commit_object *
360 a440fac0 2018-09-06 stsp got_object_commit_alloc_partial(void)
362 a440fac0 2018-09-06 stsp struct got_commit_object *commit;
364 a440fac0 2018-09-06 stsp commit = calloc(1, sizeof(*commit));
365 a440fac0 2018-09-06 stsp if (commit == NULL)
366 a440fac0 2018-09-06 stsp return NULL;
367 acf0c7c6 2018-11-05 stsp commit->tree_id = malloc(sizeof(*commit->tree_id));
368 a440fac0 2018-09-06 stsp if (commit->tree_id == NULL) {
369 a440fac0 2018-09-06 stsp free(commit);
370 a440fac0 2018-09-06 stsp return NULL;
373 dbdddfee 2021-06-23 naddy STAILQ_INIT(&commit->parent_ids);
375 a440fac0 2018-09-06 stsp return commit;
378 a440fac0 2018-09-06 stsp const struct got_error *
379 a440fac0 2018-09-06 stsp got_object_commit_add_parent(struct got_commit_object *commit,
380 a440fac0 2018-09-06 stsp const char *id_str)
382 a440fac0 2018-09-06 stsp const struct got_error *err = NULL;
383 a440fac0 2018-09-06 stsp struct got_object_qid *qid;
385 5df4932d 2018-11-05 stsp err = got_object_qid_alloc_partial(&qid);
387 7762fe12 2018-11-05 stsp return err;
389 d7b5a0e8 2022-04-20 stsp if (!got_parse_sha1_digest(qid->id.sha1, id_str)) {
390 a440fac0 2018-09-06 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
391 00eb6a1f 2019-07-15 stsp got_object_qid_free(qid);
392 a440fac0 2018-09-06 stsp return err;
395 dbdddfee 2021-06-23 naddy STAILQ_INSERT_TAIL(&commit->parent_ids, qid, entry);
396 a440fac0 2018-09-06 stsp commit->nparents++;
398 a440fac0 2018-09-06 stsp return NULL;
401 a440fac0 2018-09-06 stsp static const struct got_error *
402 a440fac0 2018-09-06 stsp parse_gmtoff(time_t *gmtoff, const char *tzstr)
404 a440fac0 2018-09-06 stsp int sign = 1;
405 a440fac0 2018-09-06 stsp const char *p = tzstr;
406 a440fac0 2018-09-06 stsp time_t h, m;
408 a440fac0 2018-09-06 stsp *gmtoff = 0;
410 a440fac0 2018-09-06 stsp if (*p == '-')
412 a440fac0 2018-09-06 stsp else if (*p != '+')
413 a440fac0 2018-09-06 stsp return got_error(GOT_ERR_BAD_OBJ_DATA);
415 99fd9ff4 2022-11-17 op if (!isdigit((unsigned char)*p) &&
416 99fd9ff4 2022-11-17 op !isdigit((unsigned char)*(p + 1)))
417 a440fac0 2018-09-06 stsp return got_error(GOT_ERR_BAD_OBJ_DATA);
418 a440fac0 2018-09-06 stsp h = (((*p - '0') * 10) + (*(p + 1) - '0'));
421 99fd9ff4 2022-11-17 op if (!isdigit((unsigned char)*p) &&
422 99fd9ff4 2022-11-17 op !isdigit((unsigned char)*(p + 1)))
423 a440fac0 2018-09-06 stsp return got_error(GOT_ERR_BAD_OBJ_DATA);
424 a440fac0 2018-09-06 stsp m = ((*p - '0') * 10) + (*(p + 1) - '0');
426 a440fac0 2018-09-06 stsp *gmtoff = (h * 60 * 60 + m * 60) * sign;
427 a440fac0 2018-09-06 stsp return NULL;
430 a440fac0 2018-09-06 stsp static const struct got_error *
431 ccb26ccd 2018-11-05 stsp parse_commit_time(time_t *time, time_t *gmtoff, char *committer)
433 a440fac0 2018-09-06 stsp const struct got_error *err = NULL;
434 a440fac0 2018-09-06 stsp const char *errstr;
435 a440fac0 2018-09-06 stsp char *space, *tzstr;
437 a440fac0 2018-09-06 stsp /* Parse and strip off trailing timezone indicator string. */
438 a440fac0 2018-09-06 stsp space = strrchr(committer, ' ');
439 a440fac0 2018-09-06 stsp if (space == NULL)
440 a440fac0 2018-09-06 stsp return got_error(GOT_ERR_BAD_OBJ_DATA);
441 a440fac0 2018-09-06 stsp tzstr = strdup(space + 1);
442 a440fac0 2018-09-06 stsp if (tzstr == NULL)
443 638f9024 2019-05-13 stsp return got_error_from_errno("strdup");
444 ccb26ccd 2018-11-05 stsp err = parse_gmtoff(gmtoff, tzstr);
445 a440fac0 2018-09-06 stsp free(tzstr);
447 9dbd8627 2021-02-04 stsp if (err->code != GOT_ERR_BAD_OBJ_DATA)
448 9dbd8627 2021-02-04 stsp return err;
449 9dbd8627 2021-02-04 stsp /* Old versions of Git omitted the timestamp. */
451 9dbd8627 2021-02-04 stsp *gmtoff = 0;
452 9dbd8627 2021-02-04 stsp return NULL;
454 a440fac0 2018-09-06 stsp *space = '\0';
456 a440fac0 2018-09-06 stsp /* Timestamp is separated from committer name + email by space. */
457 a440fac0 2018-09-06 stsp space = strrchr(committer, ' ');
458 a440fac0 2018-09-06 stsp if (space == NULL)
459 a440fac0 2018-09-06 stsp return got_error(GOT_ERR_BAD_OBJ_DATA);
461 09867e48 2019-08-13 stsp /* Timestamp parsed here is expressed as UNIX timestamp (UTC). */
462 ccb26ccd 2018-11-05 stsp *time = strtonum(space + 1, 0, INT64_MAX, &errstr);
463 a440fac0 2018-09-06 stsp if (errstr)
464 a440fac0 2018-09-06 stsp return got_error(GOT_ERR_BAD_OBJ_DATA);
466 a440fac0 2018-09-06 stsp /* Strip off parsed time information, leaving just author and email. */
467 a440fac0 2018-09-06 stsp *space = '\0';
469 a440fac0 2018-09-06 stsp return NULL;
473 03fa71c8 2018-09-06 stsp got_object_commit_close(struct got_commit_object *commit)
475 03fa71c8 2018-09-06 stsp if (commit->refcnt > 0) {
476 03fa71c8 2018-09-06 stsp commit->refcnt--;
477 03fa71c8 2018-09-06 stsp if (commit->refcnt > 0)
481 dd88155e 2019-06-29 stsp got_object_id_queue_free(&commit->parent_ids);
482 03fa71c8 2018-09-06 stsp free(commit->tree_id);
483 03fa71c8 2018-09-06 stsp free(commit->author);
484 03fa71c8 2018-09-06 stsp free(commit->committer);
485 03fa71c8 2018-09-06 stsp free(commit->logmsg);
486 03fa71c8 2018-09-06 stsp free(commit);
489 45d799e2 2018-12-23 stsp struct got_object_id *
490 45d799e2 2018-12-23 stsp got_object_commit_get_tree_id(struct got_commit_object *commit)
492 45d799e2 2018-12-23 stsp return commit->tree_id;
496 45d799e2 2018-12-23 stsp got_object_commit_get_nparents(struct got_commit_object *commit)
498 45d799e2 2018-12-23 stsp return commit->nparents;
501 45d799e2 2018-12-23 stsp const struct got_object_id_queue *
502 45d799e2 2018-12-23 stsp got_object_commit_get_parent_ids(struct got_commit_object *commit)
504 45d799e2 2018-12-23 stsp return &commit->parent_ids;
507 45d799e2 2018-12-23 stsp const char *
508 45d799e2 2018-12-23 stsp got_object_commit_get_author(struct got_commit_object *commit)
510 45d799e2 2018-12-23 stsp return commit->author;
514 45d799e2 2018-12-23 stsp got_object_commit_get_author_time(struct got_commit_object *commit)
516 45d799e2 2018-12-23 stsp return commit->author_time;
519 45d799e2 2018-12-23 stsp time_t got_object_commit_get_author_gmtoff(struct got_commit_object *commit)
521 45d799e2 2018-12-23 stsp return commit->author_gmtoff;
524 45d799e2 2018-12-23 stsp const char *
525 45d799e2 2018-12-23 stsp got_object_commit_get_committer(struct got_commit_object *commit)
527 45d799e2 2018-12-23 stsp return commit->committer;
531 45d799e2 2018-12-23 stsp got_object_commit_get_committer_time(struct got_commit_object *commit)
533 45d799e2 2018-12-23 stsp return commit->committer_time;
537 45d799e2 2018-12-23 stsp got_object_commit_get_committer_gmtoff(struct got_commit_object *commit)
539 45d799e2 2018-12-23 stsp return commit->committer_gmtoff;
542 5943eee2 2019-08-13 stsp const struct got_error *
543 5943eee2 2019-08-13 stsp got_object_commit_get_logmsg(char **logmsg, struct got_commit_object *commit)
545 5943eee2 2019-08-13 stsp const struct got_error *err = NULL;
546 b9c41b54 2021-08-03 stsp const char *src;
548 5943eee2 2019-08-13 stsp size_t len;
550 b9c41b54 2021-08-03 stsp len = strlen(commit->logmsg);
551 b9c41b54 2021-08-03 stsp *logmsg = malloc(len + 2); /* leave room for a trailing \n and \0 */
552 b9c41b54 2021-08-03 stsp if (*logmsg == NULL)
553 b9c41b54 2021-08-03 stsp return got_error_from_errno("malloc");
556 b9c41b54 2021-08-03 stsp * Strip out unusual headers. Headers are separated from the commit
557 b9c41b54 2021-08-03 stsp * message body by a single empty line.
559 b9c41b54 2021-08-03 stsp src = commit->logmsg;
560 b9c41b54 2021-08-03 stsp dst = *logmsg;
561 b9c41b54 2021-08-03 stsp while (*src != '\0' && *src != '\n') {
562 b9c41b54 2021-08-03 stsp int copy_header = 1, eol = 0;
563 b9c41b54 2021-08-03 stsp if (strncmp(src, GOT_COMMIT_LABEL_TREE,
564 b9c41b54 2021-08-03 stsp strlen(GOT_COMMIT_LABEL_TREE)) != 0 &&
565 b9c41b54 2021-08-03 stsp strncmp(src, GOT_COMMIT_LABEL_AUTHOR,
566 b9c41b54 2021-08-03 stsp strlen(GOT_COMMIT_LABEL_AUTHOR)) != 0 &&
567 b9c41b54 2021-08-03 stsp strncmp(src, GOT_COMMIT_LABEL_PARENT,
568 b9c41b54 2021-08-03 stsp strlen(GOT_COMMIT_LABEL_PARENT)) != 0 &&
569 b9c41b54 2021-08-03 stsp strncmp(src, GOT_COMMIT_LABEL_COMMITTER,
570 b9c41b54 2021-08-03 stsp strlen(GOT_COMMIT_LABEL_COMMITTER)) != 0)
571 b9c41b54 2021-08-03 stsp copy_header = 0;
573 b9c41b54 2021-08-03 stsp while (*src != '\0' && !eol) {
574 b9c41b54 2021-08-03 stsp if (copy_header) {
575 b9c41b54 2021-08-03 stsp *dst = *src;
578 b9c41b54 2021-08-03 stsp if (*src == '\n')
583 b9c41b54 2021-08-03 stsp *dst = '\0';
585 b9c41b54 2021-08-03 stsp if (strlcat(*logmsg, src, len + 1) >= len + 1) {
586 b9c41b54 2021-08-03 stsp err = got_error(GOT_ERR_NO_SPACE);
590 5943eee2 2019-08-13 stsp /* Trim redundant trailing whitespace. */
591 5943eee2 2019-08-13 stsp len = strlen(*logmsg);
592 5943eee2 2019-08-13 stsp while (len > 1 && isspace((unsigned char)(*logmsg)[len - 2]) &&
593 5943eee2 2019-08-13 stsp isspace((unsigned char)(*logmsg)[len - 1])) {
594 5943eee2 2019-08-13 stsp (*logmsg)[len - 1] = '\0';
598 b9c41b54 2021-08-03 stsp /* Append a trailing newline if missing. */
599 b9c41b54 2021-08-03 stsp if (len > 0 && (*logmsg)[len - 1] != '\n') {
600 b9c41b54 2021-08-03 stsp (*logmsg)[len] = '\n';
601 b9c41b54 2021-08-03 stsp (*logmsg)[len + 1] = '\0';
605 5943eee2 2019-08-13 stsp free(*logmsg);
606 5943eee2 2019-08-13 stsp *logmsg = NULL;
608 5943eee2 2019-08-13 stsp return err;
611 24ea5512 2019-08-22 stsp const char *
612 24ea5512 2019-08-22 stsp got_object_commit_get_logmsg_raw(struct got_commit_object *commit)
614 24ea5512 2019-08-22 stsp return commit->logmsg;
617 a440fac0 2018-09-06 stsp const struct got_error *
618 5e0b25c4 2018-12-24 stsp got_object_parse_commit(struct got_commit_object **commit, char *buf,
619 5e0b25c4 2018-12-24 stsp size_t len)
621 a440fac0 2018-09-06 stsp const struct got_error *err = NULL;
622 a440fac0 2018-09-06 stsp char *s = buf;
623 ff2a4428 2019-03-19 stsp size_t label_len;
624 a440fac0 2018-09-06 stsp ssize_t remain = (ssize_t)len;
626 4793d91b 2019-09-22 stsp if (remain == 0)
627 4793d91b 2019-09-22 stsp return got_error(GOT_ERR_BAD_OBJ_DATA);
629 a440fac0 2018-09-06 stsp *commit = got_object_commit_alloc_partial();
630 a440fac0 2018-09-06 stsp if (*commit == NULL)
631 638f9024 2019-05-13 stsp return got_error_from_errno("got_object_commit_alloc_partial");
633 ff2a4428 2019-03-19 stsp label_len = strlen(GOT_COMMIT_LABEL_TREE);
634 ff2a4428 2019-03-19 stsp if (strncmp(s, GOT_COMMIT_LABEL_TREE, label_len) == 0) {
635 ff2a4428 2019-03-19 stsp remain -= label_len;
636 a440fac0 2018-09-06 stsp if (remain < SHA1_DIGEST_STRING_LENGTH) {
637 a440fac0 2018-09-06 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
640 ff2a4428 2019-03-19 stsp s += label_len;
641 a440fac0 2018-09-06 stsp if (!got_parse_sha1_digest((*commit)->tree_id->sha1, s)) {
642 a440fac0 2018-09-06 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
645 a440fac0 2018-09-06 stsp remain -= SHA1_DIGEST_STRING_LENGTH;
646 a440fac0 2018-09-06 stsp s += SHA1_DIGEST_STRING_LENGTH;
648 a440fac0 2018-09-06 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
652 ff2a4428 2019-03-19 stsp label_len = strlen(GOT_COMMIT_LABEL_PARENT);
653 ff2a4428 2019-03-19 stsp while (strncmp(s, GOT_COMMIT_LABEL_PARENT, label_len) == 0) {
654 ff2a4428 2019-03-19 stsp remain -= label_len;
655 a440fac0 2018-09-06 stsp if (remain < SHA1_DIGEST_STRING_LENGTH) {
656 a440fac0 2018-09-06 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
659 ff2a4428 2019-03-19 stsp s += label_len;
660 a440fac0 2018-09-06 stsp err = got_object_commit_add_parent(*commit, s);
664 a440fac0 2018-09-06 stsp remain -= SHA1_DIGEST_STRING_LENGTH;
665 a440fac0 2018-09-06 stsp s += SHA1_DIGEST_STRING_LENGTH;
668 ff2a4428 2019-03-19 stsp label_len = strlen(GOT_COMMIT_LABEL_AUTHOR);
669 ff2a4428 2019-03-19 stsp if (strncmp(s, GOT_COMMIT_LABEL_AUTHOR, label_len) == 0) {
671 a440fac0 2018-09-06 stsp size_t slen;
673 ff2a4428 2019-03-19 stsp remain -= label_len;
674 a440fac0 2018-09-06 stsp if (remain <= 0) {
675 a440fac0 2018-09-06 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
678 ff2a4428 2019-03-19 stsp s += label_len;
679 dedbbd9d 2019-04-13 stsp p = memchr(s, '\n', remain);
680 a440fac0 2018-09-06 stsp if (p == NULL) {
681 a440fac0 2018-09-06 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
685 a440fac0 2018-09-06 stsp slen = strlen(s);
686 ccb26ccd 2018-11-05 stsp err = parse_commit_time(&(*commit)->author_time,
687 ccb26ccd 2018-11-05 stsp &(*commit)->author_gmtoff, s);
690 a440fac0 2018-09-06 stsp (*commit)->author = strdup(s);
691 a440fac0 2018-09-06 stsp if ((*commit)->author == NULL) {
692 638f9024 2019-05-13 stsp err = got_error_from_errno("strdup");
695 a440fac0 2018-09-06 stsp s += slen + 1;
696 a440fac0 2018-09-06 stsp remain -= slen + 1;
699 ff2a4428 2019-03-19 stsp label_len = strlen(GOT_COMMIT_LABEL_COMMITTER);
700 ff2a4428 2019-03-19 stsp if (strncmp(s, GOT_COMMIT_LABEL_COMMITTER, label_len) == 0) {
702 a440fac0 2018-09-06 stsp size_t slen;
704 ff2a4428 2019-03-19 stsp remain -= label_len;
705 a440fac0 2018-09-06 stsp if (remain <= 0) {
706 a440fac0 2018-09-06 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
709 ff2a4428 2019-03-19 stsp s += label_len;
710 dedbbd9d 2019-04-13 stsp p = memchr(s, '\n', remain);
711 a440fac0 2018-09-06 stsp if (p == NULL) {
712 a440fac0 2018-09-06 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
716 a440fac0 2018-09-06 stsp slen = strlen(s);
717 ccb26ccd 2018-11-05 stsp err = parse_commit_time(&(*commit)->committer_time,
718 ccb26ccd 2018-11-05 stsp &(*commit)->committer_gmtoff, s);
721 a440fac0 2018-09-06 stsp (*commit)->committer = strdup(s);
722 a440fac0 2018-09-06 stsp if ((*commit)->committer == NULL) {
723 638f9024 2019-05-13 stsp err = got_error_from_errno("strdup");
726 a440fac0 2018-09-06 stsp s += slen + 1;
727 a440fac0 2018-09-06 stsp remain -= slen + 1;
730 a440fac0 2018-09-06 stsp (*commit)->logmsg = strndup(s, remain);
731 a440fac0 2018-09-06 stsp if ((*commit)->logmsg == NULL) {
732 638f9024 2019-05-13 stsp err = got_error_from_errno("strndup");
737 a440fac0 2018-09-06 stsp got_object_commit_close(*commit);
738 a440fac0 2018-09-06 stsp *commit = NULL;
740 a440fac0 2018-09-06 stsp return err;
743 13b2bc37 2022-10-23 stsp const struct got_error *
744 13b2bc37 2022-10-23 stsp got_object_read_commit(struct got_commit_object **commit, int fd,
745 13b2bc37 2022-10-23 stsp struct got_object_id *expected_id, size_t expected_size)
747 13b2bc37 2022-10-23 stsp struct got_object *obj = NULL;
748 13b2bc37 2022-10-23 stsp const struct got_error *err = NULL;
749 13b2bc37 2022-10-23 stsp size_t len;
750 13b2bc37 2022-10-23 stsp uint8_t *p;
751 13b2bc37 2022-10-23 stsp struct got_inflate_checksum csum;
752 13b2bc37 2022-10-23 stsp SHA1_CTX sha1_ctx;
753 13b2bc37 2022-10-23 stsp struct got_object_id id;
755 13b2bc37 2022-10-23 stsp SHA1Init(&sha1_ctx);
756 13b2bc37 2022-10-23 stsp memset(&csum, 0, sizeof(csum));
757 13b2bc37 2022-10-23 stsp csum.output_sha1 = &sha1_ctx;
759 13b2bc37 2022-10-23 stsp err = got_inflate_to_mem_fd(&p, &len, NULL, &csum, expected_size, fd);
761 13b2bc37 2022-10-23 stsp return err;
763 13b2bc37 2022-10-23 stsp SHA1Final(id.sha1, &sha1_ctx);
764 7f959095 2023-02-02 op if (got_object_id_cmp(expected_id, &id) != 0) {
765 3c23f6cd 2023-02-04 op err = got_error_checksum(expected_id);
769 13b2bc37 2022-10-23 stsp err = got_object_parse_header(&obj, p, len);
773 13b2bc37 2022-10-23 stsp if (len < obj->hdrlen + obj->size) {
774 13b2bc37 2022-10-23 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
778 13b2bc37 2022-10-23 stsp if (obj->type != GOT_OBJ_TYPE_COMMIT) {
779 13b2bc37 2022-10-23 stsp err = got_error(GOT_ERR_OBJ_TYPE);
783 13b2bc37 2022-10-23 stsp /* Skip object header. */
784 13b2bc37 2022-10-23 stsp len -= obj->hdrlen;
785 13b2bc37 2022-10-23 stsp err = got_object_parse_commit(commit, p + obj->hdrlen, len);
789 13b2bc37 2022-10-23 stsp got_object_close(obj);
790 13b2bc37 2022-10-23 stsp return err;
794 ed175427 2019-05-09 stsp got_object_tree_close(struct got_tree_object *tree)
796 03fa71c8 2018-09-06 stsp if (tree->refcnt > 0) {
797 03fa71c8 2018-09-06 stsp tree->refcnt--;
798 03fa71c8 2018-09-06 stsp if (tree->refcnt > 0)
802 56e0773d 2019-11-28 stsp free(tree->entries);
803 03fa71c8 2018-09-06 stsp free(tree);
806 a440fac0 2018-09-06 stsp static const struct got_error *
807 9985f404 2022-05-19 stsp parse_tree_entry(struct got_parsed_tree_entry *pte, size_t *elen, char *buf,
808 a440fac0 2018-09-06 stsp size_t maxlen)
810 8914529d 2019-04-13 stsp char *p, *space;
814 9ef4ac16 2019-04-13 stsp *elen = strnlen(buf, maxlen) + 1;
815 9985f404 2022-05-19 stsp if (*elen > maxlen)
816 a440fac0 2018-09-06 stsp return got_error(GOT_ERR_BAD_OBJ_DATA);
818 dedbbd9d 2019-04-13 stsp space = memchr(buf, ' ', *elen);
819 9985f404 2022-05-19 stsp if (space == NULL || space <= buf)
820 9985f404 2022-05-19 stsp return got_error(GOT_ERR_BAD_OBJ_DATA);
822 9985f404 2022-05-19 stsp pte->mode = 0;
824 8914529d 2019-04-13 stsp while (p < space) {
825 00d10bca 2023-01-19 mark if (*p < '0' || *p > '7')
826 9985f404 2022-05-19 stsp return got_error(GOT_ERR_BAD_OBJ_DATA);
827 9985f404 2022-05-19 stsp pte->mode <<= 3;
828 9985f404 2022-05-19 stsp pte->mode |= *p - '0';
832 9985f404 2022-05-19 stsp if (*elen > maxlen || maxlen - *elen < SHA1_DIGEST_LENGTH)
833 9985f404 2022-05-19 stsp return got_error(GOT_ERR_BAD_OBJ_DATA);
835 9985f404 2022-05-19 stsp pte->name = space + 1;
836 9985f404 2022-05-19 stsp pte->namelen = strlen(pte->name);
837 68bf1b1e 2018-11-07 stsp buf += *elen;
838 9985f404 2022-05-19 stsp pte->id = buf;
839 a440fac0 2018-09-06 stsp *elen += SHA1_DIGEST_LENGTH;
840 9985f404 2022-05-19 stsp return NULL;
844 9985f404 2022-05-19 stsp pte_cmp(const void *pa, const void *pb)
846 9985f404 2022-05-19 stsp const struct got_parsed_tree_entry *a = pa, *b = pb;
848 9985f404 2022-05-19 stsp return got_path_cmp(a->name, b->name, a->namelen, b->namelen);
851 a440fac0 2018-09-06 stsp const struct got_error *
852 d294b1dc 2022-10-18 stsp got_object_parse_tree(struct got_parsed_tree_entry **entries, size_t *nentries,
853 d294b1dc 2022-10-18 stsp size_t *nentries_alloc, uint8_t *buf, size_t len)
855 3022d272 2019-11-14 stsp const struct got_error *err = NULL;
856 d294b1dc 2022-10-18 stsp size_t remain = len;
857 9985f404 2022-05-19 stsp const size_t nalloc = 16;
858 9985f404 2022-05-19 stsp struct got_parsed_tree_entry *pte;
861 3022d272 2019-11-14 stsp *nentries = 0;
862 db1d3576 2019-10-04 stsp if (remain == 0)
863 db1d3576 2019-10-04 stsp return NULL; /* tree is empty */
865 a440fac0 2018-09-06 stsp while (remain > 0) {
866 a440fac0 2018-09-06 stsp size_t elen;
868 d294b1dc 2022-10-18 stsp if (*nentries >= *nentries_alloc) {
869 d294b1dc 2022-10-18 stsp pte = recallocarray(*entries, *nentries_alloc,
870 d294b1dc 2022-10-18 stsp *nentries_alloc + nalloc, sizeof(**entries));
871 9985f404 2022-05-19 stsp if (pte == NULL) {
872 9985f404 2022-05-19 stsp err = got_error_from_errno("recallocarray");
875 9985f404 2022-05-19 stsp *entries = pte;
876 d294b1dc 2022-10-18 stsp *nentries_alloc += nalloc;
879 9985f404 2022-05-19 stsp pte = &(*entries)[*nentries];
880 9985f404 2022-05-19 stsp err = parse_tree_entry(pte, &elen, buf, remain);
883 a440fac0 2018-09-06 stsp buf += elen;
884 a440fac0 2018-09-06 stsp remain -= elen;
885 3022d272 2019-11-14 stsp (*nentries)++;
888 a440fac0 2018-09-06 stsp if (remain != 0) {
889 f5d3d7af 2019-02-05 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
893 9985f404 2022-05-19 stsp if (*nentries > 1) {
894 9985f404 2022-05-19 stsp mergesort(*entries, *nentries, sizeof(**entries), pte_cmp);
896 9985f404 2022-05-19 stsp for (i = 0; i < *nentries - 1; i++) {
897 9985f404 2022-05-19 stsp struct got_parsed_tree_entry *prev = &(*entries)[i];
898 9985f404 2022-05-19 stsp pte = &(*entries)[i + 1];
899 9985f404 2022-05-19 stsp if (got_path_cmp(prev->name, pte->name,
900 9985f404 2022-05-19 stsp prev->namelen, pte->namelen) == 0) {
901 9985f404 2022-05-19 stsp err = got_error(GOT_ERR_TREE_DUP_ENTRY);
908 3022d272 2019-11-14 stsp *nentries = 0;
909 f5d3d7af 2019-02-05 stsp return err;
912 13b2bc37 2022-10-23 stsp const struct got_error *
913 13b2bc37 2022-10-23 stsp got_object_read_tree(struct got_parsed_tree_entry **entries, size_t *nentries,
914 13b2bc37 2022-10-23 stsp size_t *nentries_alloc, uint8_t **p, int fd,
915 13b2bc37 2022-10-23 stsp struct got_object_id *expected_id)
917 13b2bc37 2022-10-23 stsp const struct got_error *err = NULL;
918 13b2bc37 2022-10-23 stsp struct got_object *obj = NULL;
919 13b2bc37 2022-10-23 stsp size_t len;
920 13b2bc37 2022-10-23 stsp struct got_inflate_checksum csum;
921 13b2bc37 2022-10-23 stsp SHA1_CTX sha1_ctx;
922 13b2bc37 2022-10-23 stsp struct got_object_id id;
924 13b2bc37 2022-10-23 stsp SHA1Init(&sha1_ctx);
925 13b2bc37 2022-10-23 stsp memset(&csum, 0, sizeof(csum));
926 13b2bc37 2022-10-23 stsp csum.output_sha1 = &sha1_ctx;
928 13b2bc37 2022-10-23 stsp err = got_inflate_to_mem_fd(p, &len, NULL, &csum, 0, fd);
930 13b2bc37 2022-10-23 stsp return err;
932 13b2bc37 2022-10-23 stsp SHA1Final(id.sha1, &sha1_ctx);
933 7f959095 2023-02-02 op if (got_object_id_cmp(expected_id, &id) != 0) {
934 3c23f6cd 2023-02-04 op err = got_error_checksum(expected_id);
938 13b2bc37 2022-10-23 stsp err = got_object_parse_header(&obj, *p, len);
942 13b2bc37 2022-10-23 stsp if (len < obj->hdrlen + obj->size) {
943 13b2bc37 2022-10-23 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
947 13b2bc37 2022-10-23 stsp /* Skip object header. */
948 13b2bc37 2022-10-23 stsp len -= obj->hdrlen;
949 13b2bc37 2022-10-23 stsp err = got_object_parse_tree(entries, nentries, nentries_alloc,
950 13b2bc37 2022-10-23 stsp *p + obj->hdrlen, len);
953 13b2bc37 2022-10-23 stsp got_object_close(obj);
954 13b2bc37 2022-10-23 stsp return err;
958 f4a881ce 2018-11-17 stsp got_object_tag_close(struct got_tag_object *tag)
960 ca0d469c 2019-08-13 stsp if (tag->refcnt > 0) {
961 ca0d469c 2019-08-13 stsp tag->refcnt--;
962 ca0d469c 2019-08-13 stsp if (tag->refcnt > 0)
966 f4a881ce 2018-11-17 stsp free(tag->tag);
967 f4a881ce 2018-11-17 stsp free(tag->tagger);
968 f4a881ce 2018-11-17 stsp free(tag->tagmsg);
972 ad242220 2018-09-08 stsp const struct got_error *
973 f4a881ce 2018-11-17 stsp got_object_parse_tag(struct got_tag_object **tag, uint8_t *buf, size_t len)
975 f4a881ce 2018-11-17 stsp const struct got_error *err = NULL;
976 f4a881ce 2018-11-17 stsp size_t remain = len;
977 f4a881ce 2018-11-17 stsp char *s = buf;
978 ff2a4428 2019-03-19 stsp size_t label_len;
980 4793d91b 2019-09-22 stsp if (remain == 0)
981 4793d91b 2019-09-22 stsp return got_error(GOT_ERR_BAD_OBJ_DATA);
983 f4a881ce 2018-11-17 stsp *tag = calloc(1, sizeof(**tag));
984 f4a881ce 2018-11-17 stsp if (*tag == NULL)
985 638f9024 2019-05-13 stsp return got_error_from_errno("calloc");
987 ff2a4428 2019-03-19 stsp label_len = strlen(GOT_TAG_LABEL_OBJECT);
988 ff2a4428 2019-03-19 stsp if (strncmp(s, GOT_TAG_LABEL_OBJECT, label_len) == 0) {
989 ff2a4428 2019-03-19 stsp remain -= label_len;
990 f4a881ce 2018-11-17 stsp if (remain < SHA1_DIGEST_STRING_LENGTH) {
991 f4a881ce 2018-11-17 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
994 ff2a4428 2019-03-19 stsp s += label_len;
995 f4a881ce 2018-11-17 stsp if (!got_parse_sha1_digest((*tag)->id.sha1, s)) {
996 f4a881ce 2018-11-17 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
999 f4a881ce 2018-11-17 stsp remain -= SHA1_DIGEST_STRING_LENGTH;
1000 f4a881ce 2018-11-17 stsp s += SHA1_DIGEST_STRING_LENGTH;
1002 f4a881ce 2018-11-17 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
1003 f4a881ce 2018-11-17 stsp goto done;
1006 f4a881ce 2018-11-17 stsp if (remain <= 0) {
1007 f4a881ce 2018-11-17 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
1008 f4a881ce 2018-11-17 stsp goto done;
1011 ff2a4428 2019-03-19 stsp label_len = strlen(GOT_TAG_LABEL_TYPE);
1012 ff2a4428 2019-03-19 stsp if (strncmp(s, GOT_TAG_LABEL_TYPE, label_len) == 0) {
1013 ff2a4428 2019-03-19 stsp remain -= label_len;
1014 f4a881ce 2018-11-17 stsp if (remain <= 0) {
1015 f4a881ce 2018-11-17 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
1016 f4a881ce 2018-11-17 stsp goto done;
1018 ff2a4428 2019-03-19 stsp s += label_len;
1019 ff2a4428 2019-03-19 stsp if (strncmp(s, GOT_OBJ_LABEL_COMMIT,
1020 ff2a4428 2019-03-19 stsp strlen(GOT_OBJ_LABEL_COMMIT)) == 0) {
1021 f4a881ce 2018-11-17 stsp (*tag)->obj_type = GOT_OBJ_TYPE_COMMIT;
1022 ff2a4428 2019-03-19 stsp label_len = strlen(GOT_OBJ_LABEL_COMMIT);
1023 ff2a4428 2019-03-19 stsp s += label_len;
1024 ff2a4428 2019-03-19 stsp remain -= label_len;
1025 ff2a4428 2019-03-19 stsp } else if (strncmp(s, GOT_OBJ_LABEL_TREE,
1026 ff2a4428 2019-03-19 stsp strlen(GOT_OBJ_LABEL_TREE)) == 0) {
1027 f4a881ce 2018-11-17 stsp (*tag)->obj_type = GOT_OBJ_TYPE_TREE;
1028 ff2a4428 2019-03-19 stsp label_len = strlen(GOT_OBJ_LABEL_TREE);
1029 ff2a4428 2019-03-19 stsp s += label_len;
1030 ff2a4428 2019-03-19 stsp remain -= label_len;
1031 ff2a4428 2019-03-19 stsp } else if (strncmp(s, GOT_OBJ_LABEL_BLOB,
1032 ff2a4428 2019-03-19 stsp strlen(GOT_OBJ_LABEL_BLOB)) == 0) {
1033 f4a881ce 2018-11-17 stsp (*tag)->obj_type = GOT_OBJ_TYPE_BLOB;
1034 ff2a4428 2019-03-19 stsp label_len = strlen(GOT_OBJ_LABEL_BLOB);
1035 ff2a4428 2019-03-19 stsp s += label_len;
1036 ff2a4428 2019-03-19 stsp remain -= label_len;
1037 ff2a4428 2019-03-19 stsp } else if (strncmp(s, GOT_OBJ_LABEL_TAG,
1038 ff2a4428 2019-03-19 stsp strlen(GOT_OBJ_LABEL_TAG)) == 0) {
1039 f4a881ce 2018-11-17 stsp (*tag)->obj_type = GOT_OBJ_TYPE_TAG;
1040 ff2a4428 2019-03-19 stsp label_len = strlen(GOT_OBJ_LABEL_TAG);
1041 ff2a4428 2019-03-19 stsp s += label_len;
1042 ff2a4428 2019-03-19 stsp remain -= label_len;
1044 f4a881ce 2018-11-17 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
1045 f4a881ce 2018-11-17 stsp goto done;
1048 f4a881ce 2018-11-17 stsp if (remain <= 0 || *s != '\n') {
1049 f4a881ce 2018-11-17 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
1050 f4a881ce 2018-11-17 stsp goto done;
1054 f4a881ce 2018-11-17 stsp if (remain <= 0) {
1055 f4a881ce 2018-11-17 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
1056 f4a881ce 2018-11-17 stsp goto done;
1059 f4a881ce 2018-11-17 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
1060 f4a881ce 2018-11-17 stsp goto done;
1063 ff2a4428 2019-03-19 stsp label_len = strlen(GOT_TAG_LABEL_TAG);
1064 ff2a4428 2019-03-19 stsp if (strncmp(s, GOT_TAG_LABEL_TAG, label_len) == 0) {
1066 f4a881ce 2018-11-17 stsp size_t slen;
1067 ff2a4428 2019-03-19 stsp remain -= label_len;
1068 f4a881ce 2018-11-17 stsp if (remain <= 0) {
1069 f4a881ce 2018-11-17 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
1070 f4a881ce 2018-11-17 stsp goto done;
1072 ff2a4428 2019-03-19 stsp s += label_len;
1073 dedbbd9d 2019-04-13 stsp p = memchr(s, '\n', remain);
1074 f4a881ce 2018-11-17 stsp if (p == NULL) {
1075 f4a881ce 2018-11-17 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
1076 f4a881ce 2018-11-17 stsp goto done;
1078 f4a881ce 2018-11-17 stsp *p = '\0';
1079 f4a881ce 2018-11-17 stsp slen = strlen(s);
1080 f4a881ce 2018-11-17 stsp (*tag)->tag = strndup(s, slen);
1081 f4a881ce 2018-11-17 stsp if ((*tag)->tag == NULL) {
1082 638f9024 2019-05-13 stsp err = got_error_from_errno("strndup");
1083 f4a881ce 2018-11-17 stsp goto done;
1085 f4a881ce 2018-11-17 stsp s += slen + 1;
1086 f4a881ce 2018-11-17 stsp remain -= slen + 1;
1087 f4a881ce 2018-11-17 stsp if (remain <= 0) {
1088 f4a881ce 2018-11-17 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
1089 f4a881ce 2018-11-17 stsp goto done;
1092 f4a881ce 2018-11-17 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
1093 f4a881ce 2018-11-17 stsp goto done;
1096 ff2a4428 2019-03-19 stsp label_len = strlen(GOT_TAG_LABEL_TAGGER);
1097 ff2a4428 2019-03-19 stsp if (strncmp(s, GOT_TAG_LABEL_TAGGER, label_len) == 0) {
1099 f4a881ce 2018-11-17 stsp size_t slen;
1101 ff2a4428 2019-03-19 stsp remain -= label_len;
1102 f4a881ce 2018-11-17 stsp if (remain <= 0) {
1103 f4a881ce 2018-11-17 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
1104 f4a881ce 2018-11-17 stsp goto done;
1106 ff2a4428 2019-03-19 stsp s += label_len;
1107 dedbbd9d 2019-04-13 stsp p = memchr(s, '\n', remain);
1108 f4a881ce 2018-11-17 stsp if (p == NULL) {
1109 f4a881ce 2018-11-17 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
1110 f4a881ce 2018-11-17 stsp goto done;
1112 f4a881ce 2018-11-17 stsp *p = '\0';
1113 f4a881ce 2018-11-17 stsp slen = strlen(s);
1114 f4a881ce 2018-11-17 stsp err = parse_commit_time(&(*tag)->tagger_time,
1115 f4a881ce 2018-11-17 stsp &(*tag)->tagger_gmtoff, s);
1117 f4a881ce 2018-11-17 stsp goto done;
1118 f4a881ce 2018-11-17 stsp (*tag)->tagger = strdup(s);
1119 f4a881ce 2018-11-17 stsp if ((*tag)->tagger == NULL) {
1120 638f9024 2019-05-13 stsp err = got_error_from_errno("strdup");
1121 f4a881ce 2018-11-17 stsp goto done;
1123 f4a881ce 2018-11-17 stsp s += slen + 1;
1124 f4a881ce 2018-11-17 stsp remain -= slen + 1;
1125 5a8b373c 2020-12-18 stsp if (remain < 0) {
1126 f4a881ce 2018-11-17 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
1127 f4a881ce 2018-11-17 stsp goto done;
1130 e0e55b50 2019-02-01 stsp /* Some old tags in the Linux git repo have no tagger. */
1131 e0e55b50 2019-02-01 stsp (*tag)->tagger = strdup("");
1132 e0e55b50 2019-02-01 stsp if ((*tag)->tagger == NULL) {
1133 638f9024 2019-05-13 stsp err = got_error_from_errno("strdup");
1134 e0e55b50 2019-02-01 stsp goto done;
1138 f4a881ce 2018-11-17 stsp (*tag)->tagmsg = strndup(s, remain);
1139 f4a881ce 2018-11-17 stsp if ((*tag)->tagmsg == NULL) {
1140 638f9024 2019-05-13 stsp err = got_error_from_errno("strndup");
1141 f4a881ce 2018-11-17 stsp goto done;
1144 f4a881ce 2018-11-17 stsp if (err) {
1145 f4a881ce 2018-11-17 stsp got_object_tag_close(*tag);
1146 f4a881ce 2018-11-17 stsp *tag = NULL;
1148 13b2bc37 2022-10-23 stsp return err;
1151 13b2bc37 2022-10-23 stsp const struct got_error *
1152 758dc042 2022-11-06 stsp got_object_read_tag(struct got_tag_object **tag, int fd,
1153 13b2bc37 2022-10-23 stsp struct got_object_id *expected_id, size_t expected_size)
1155 13b2bc37 2022-10-23 stsp const struct got_error *err = NULL;
1156 13b2bc37 2022-10-23 stsp struct got_object *obj = NULL;
1157 13b2bc37 2022-10-23 stsp size_t len;
1158 13b2bc37 2022-10-23 stsp uint8_t *p;
1159 13b2bc37 2022-10-23 stsp struct got_inflate_checksum csum;
1160 13b2bc37 2022-10-23 stsp SHA1_CTX sha1_ctx;
1161 13b2bc37 2022-10-23 stsp struct got_object_id id;
1163 13b2bc37 2022-10-23 stsp SHA1Init(&sha1_ctx);
1164 13b2bc37 2022-10-23 stsp memset(&csum, 0, sizeof(csum));
1165 13b2bc37 2022-10-23 stsp csum.output_sha1 = &sha1_ctx;
1167 13b2bc37 2022-10-23 stsp err = got_inflate_to_mem_fd(&p, &len, NULL, &csum,
1168 13b2bc37 2022-10-23 stsp expected_size, fd);
1170 13b2bc37 2022-10-23 stsp return err;
1172 13b2bc37 2022-10-23 stsp SHA1Final(id.sha1, &sha1_ctx);
1173 7f959095 2023-02-02 op if (got_object_id_cmp(expected_id, &id) != 0) {
1174 3c23f6cd 2023-02-04 op err = got_error_checksum(expected_id);
1175 13b2bc37 2022-10-23 stsp goto done;
1178 13b2bc37 2022-10-23 stsp err = got_object_parse_header(&obj, p, len);
1180 13b2bc37 2022-10-23 stsp goto done;
1182 13b2bc37 2022-10-23 stsp if (len < obj->hdrlen + obj->size) {
1183 13b2bc37 2022-10-23 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
1184 13b2bc37 2022-10-23 stsp goto done;
1187 13b2bc37 2022-10-23 stsp /* Skip object header. */
1188 13b2bc37 2022-10-23 stsp len -= obj->hdrlen;
1189 13b2bc37 2022-10-23 stsp err = got_object_parse_tag(tag, p + obj->hdrlen, len);
1193 13b2bc37 2022-10-23 stsp got_object_close(obj);
1194 f4a881ce 2018-11-17 stsp return err;
1197 f4a881ce 2018-11-17 stsp const struct got_error *
1198 ad242220 2018-09-08 stsp got_read_file_to_mem(uint8_t **outbuf, size_t *outlen, FILE *f)
1200 a440fac0 2018-09-06 stsp const struct got_error *err = NULL;
1201 a440fac0 2018-09-06 stsp static const size_t blocksize = 512;
1202 a440fac0 2018-09-06 stsp size_t n, total, remain;
1203 a440fac0 2018-09-06 stsp uint8_t *buf;
1205 a440fac0 2018-09-06 stsp *outbuf = NULL;
1206 a440fac0 2018-09-06 stsp *outlen = 0;
1208 a440fac0 2018-09-06 stsp buf = malloc(blocksize);
1209 a440fac0 2018-09-06 stsp if (buf == NULL)
1210 638f9024 2019-05-13 stsp return got_error_from_errno("malloc");
1212 a440fac0 2018-09-06 stsp remain = blocksize;
1213 a440fac0 2018-09-06 stsp total = 0;
1215 a440fac0 2018-09-06 stsp if (remain == 0) {
1216 a440fac0 2018-09-06 stsp uint8_t *newbuf;
1217 a440fac0 2018-09-06 stsp newbuf = reallocarray(buf, 1, total + blocksize);
1218 a440fac0 2018-09-06 stsp if (newbuf == NULL) {
1219 638f9024 2019-05-13 stsp err = got_error_from_errno("reallocarray");
1220 a440fac0 2018-09-06 stsp goto done;
1222 a440fac0 2018-09-06 stsp buf = newbuf;
1223 a440fac0 2018-09-06 stsp remain += blocksize;
1225 a440fac0 2018-09-06 stsp n = fread(buf + total, 1, remain, f);
1226 a440fac0 2018-09-06 stsp if (n == 0) {
1227 a440fac0 2018-09-06 stsp if (ferror(f)) {
1228 a440fac0 2018-09-06 stsp err = got_ferror(f, GOT_ERR_IO);
1229 a440fac0 2018-09-06 stsp goto done;
1231 a440fac0 2018-09-06 stsp break; /* EOF */
1233 a440fac0 2018-09-06 stsp remain -= n;
1234 a440fac0 2018-09-06 stsp total += n;
1238 a440fac0 2018-09-06 stsp if (err == NULL) {
1239 a440fac0 2018-09-06 stsp *outbuf = buf;
1240 a440fac0 2018-09-06 stsp *outlen = total;
1242 a440fac0 2018-09-06 stsp free(buf);
1243 ad242220 2018-09-08 stsp return err;
