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 4fccd2fe 2023-03-08 thomas #include "got_compat.h"
19 a440fac0 2018-09-06 stsp #include <sys/types.h>
20 a440fac0 2018-09-06 stsp #include <sys/stat.h>
21 8b925c6c 2022-07-16 thomas #include <sys/queue.h>
22 a440fac0 2018-09-06 stsp #include <sys/uio.h>
23 a440fac0 2018-09-06 stsp #include <sys/socket.h>
24 a440fac0 2018-09-06 stsp #include <sys/wait.h>
25 2b0ae357 2022-01-10 thomas #include <sys/mman.h>
27 a440fac0 2018-09-06 stsp #include <errno.h>
28 a440fac0 2018-09-06 stsp #include <stdio.h>
29 a440fac0 2018-09-06 stsp #include <stdlib.h>
30 a440fac0 2018-09-06 stsp #include <string.h>
31 a440fac0 2018-09-06 stsp #include <stdint.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 <time.h>
36 ad242220 2018-09-08 stsp #include <unistd.h>
38 a440fac0 2018-09-06 stsp #include "got_error.h"
39 a440fac0 2018-09-06 stsp #include "got_object.h"
40 a440fac0 2018-09-06 stsp #include "got_repository.h"
41 a440fac0 2018-09-06 stsp #include "got_opentemp.h"
42 324d37e7 2019-05-11 stsp #include "got_path.h"
44 be288a59 2023-02-23 thomas #include "got_lib_hash.h"
45 a440fac0 2018-09-06 stsp #include "got_lib_delta.h"
46 41fa1437 2018-11-05 stsp #include "got_lib_inflate.h"
47 41fa1437 2018-11-05 stsp #include "got_lib_object.h"
48 3022d272 2019-11-14 stsp #include "got_lib_object_parse.h"
49 6bef87be 2018-09-11 stsp #include "got_lib_object_cache.h"
50 15a94983 2018-12-23 stsp #include "got_lib_pack.h"
51 ad242220 2018-09-08 stsp #include "got_lib_repository.h"
53 a440fac0 2018-09-06 stsp #ifndef nitems
54 a440fac0 2018-09-06 stsp #define nitems(_a) (sizeof(_a) / sizeof((_a)[0]))
57 ca6e02ac 2020-01-07 stsp struct got_object_id *
58 ca6e02ac 2020-01-07 stsp got_object_id_dup(struct got_object_id *id1)
60 ca6e02ac 2020-01-07 stsp struct got_object_id *id2;
62 ca6e02ac 2020-01-07 stsp id2 = malloc(sizeof(*id2));
63 ca6e02ac 2020-01-07 stsp if (id2 == NULL)
64 ca6e02ac 2020-01-07 stsp return NULL;
65 ca6e02ac 2020-01-07 stsp memcpy(id2, id1, sizeof(*id2));
70 f054b67a 2018-11-05 stsp got_object_id_cmp(const struct got_object_id *id1,
71 f054b67a 2018-11-05 stsp const struct got_object_id *id2)
73 f054b67a 2018-11-05 stsp return memcmp(id1->sha1, id2->sha1, SHA1_DIGEST_LENGTH);
76 2ff12563 2018-09-15 stsp const struct got_error *
77 5df4932d 2018-11-05 stsp got_object_qid_alloc_partial(struct got_object_qid **qid)
79 5df4932d 2018-11-05 stsp *qid = malloc(sizeof(**qid));
80 5df4932d 2018-11-05 stsp if (*qid == NULL)
81 638f9024 2019-05-13 stsp return got_error_from_errno("malloc");
83 74a2356f 2021-06-18 stsp (*qid)->data = NULL;
84 5df4932d 2018-11-05 stsp return NULL;
87 5df4932d 2018-11-05 stsp const struct got_error *
88 2ff12563 2018-09-15 stsp got_object_id_str(char **outbuf, struct got_object_id *id)
90 01986ce9 2023-02-07 thomas static const size_t len = GOT_OBJECT_ID_HEX_MAXLEN;
92 2ff12563 2018-09-15 stsp *outbuf = malloc(len);
93 2ff12563 2018-09-15 stsp if (*outbuf == NULL)
94 638f9024 2019-05-13 stsp return got_error_from_errno("malloc");
96 01986ce9 2023-02-07 thomas if (got_object_id_hex(id, *outbuf, len) == NULL) {
97 2ff12563 2018-09-15 stsp free(*outbuf);
98 2ff12563 2018-09-15 stsp *outbuf = NULL;
99 2ff12563 2018-09-15 stsp return got_error(GOT_ERR_BAD_OBJ_ID_STR);
102 2ff12563 2018-09-15 stsp return NULL;
106 01986ce9 2023-02-07 thomas got_object_id_hex(struct got_object_id *id, char *buf, size_t len)
108 01986ce9 2023-02-07 thomas return got_sha1_digest_to_str(id->sha1, buf, len);
112 03fa71c8 2018-09-06 stsp got_object_close(struct got_object *obj)
114 03fa71c8 2018-09-06 stsp if (obj->refcnt > 0) {
115 03fa71c8 2018-09-06 stsp obj->refcnt--;
116 03fa71c8 2018-09-06 stsp if (obj->refcnt > 0)
120 03fa71c8 2018-09-06 stsp if (obj->flags & GOT_OBJ_FLAG_DELTIFIED) {
121 03fa71c8 2018-09-06 stsp struct got_delta *delta;
122 dbdddfee 2021-06-23 naddy while (!STAILQ_EMPTY(&obj->deltas.entries)) {
123 dbdddfee 2021-06-23 naddy delta = STAILQ_FIRST(&obj->deltas.entries);
124 dbdddfee 2021-06-23 naddy STAILQ_REMOVE_HEAD(&obj->deltas.entries, entry);
125 2256993b 2019-07-15 stsp free(delta);
131 8ab9215c 2021-10-15 thomas const struct got_error *
132 8ab9215c 2021-10-15 thomas got_object_raw_close(struct got_raw_object *obj)
134 8ab9215c 2021-10-15 thomas const struct got_error *err = NULL;
136 8ab9215c 2021-10-15 thomas if (obj->refcnt > 0) {
137 8ab9215c 2021-10-15 thomas obj->refcnt--;
138 8ab9215c 2021-10-15 thomas if (obj->refcnt > 0)
139 8ab9215c 2021-10-15 thomas return NULL;
142 3efd8e31 2022-10-23 thomas if (obj->close_cb)
143 3efd8e31 2022-10-23 thomas obj->close_cb(obj);
145 2b0ae357 2022-01-10 thomas if (obj->f == NULL) {
146 2b0ae357 2022-01-10 thomas if (obj->fd != -1) {
147 2b0ae357 2022-01-10 thomas if (munmap(obj->data, obj->hdrlen + obj->size) == -1)
148 2b0ae357 2022-01-10 thomas err = got_error_from_errno("munmap");
149 2b0ae357 2022-01-10 thomas if (close(obj->fd) == -1 && err == NULL)
150 2b0ae357 2022-01-10 thomas err = got_error_from_errno("close");
152 2b0ae357 2022-01-10 thomas free(obj->data);
154 2b0ae357 2022-01-10 thomas if (fclose(obj->f) == EOF && err == NULL)
155 2b0ae357 2022-01-10 thomas err = got_error_from_errno("fclose");
157 8ab9215c 2021-10-15 thomas free(obj);
158 8ab9215c 2021-10-15 thomas return err;
162 03fa71c8 2018-09-06 stsp got_object_qid_free(struct got_object_qid *qid)
168 dd88155e 2019-06-29 stsp got_object_id_queue_free(struct got_object_id_queue *ids)
170 dd88155e 2019-06-29 stsp struct got_object_qid *qid;
172 dbdddfee 2021-06-23 naddy while (!STAILQ_EMPTY(ids)) {
173 dbdddfee 2021-06-23 naddy qid = STAILQ_FIRST(ids);
174 dbdddfee 2021-06-23 naddy STAILQ_REMOVE_HEAD(ids, entry);
175 dd88155e 2019-06-29 stsp got_object_qid_free(qid);
179 1785f84a 2018-12-23 stsp const struct got_error *
180 1785f84a 2018-12-23 stsp got_object_parse_header(struct got_object **obj, char *buf, size_t len)
182 ff2a4428 2019-03-19 stsp const char *obj_labels[] = {
183 ff2a4428 2019-03-19 stsp GOT_OBJ_LABEL_COMMIT,
184 ff2a4428 2019-03-19 stsp GOT_OBJ_LABEL_TREE,
185 ff2a4428 2019-03-19 stsp GOT_OBJ_LABEL_BLOB,
186 ff2a4428 2019-03-19 stsp GOT_OBJ_LABEL_TAG,
188 1785f84a 2018-12-23 stsp const int obj_types[] = {
189 1785f84a 2018-12-23 stsp GOT_OBJ_TYPE_COMMIT,
190 1785f84a 2018-12-23 stsp GOT_OBJ_TYPE_TREE,
191 1785f84a 2018-12-23 stsp GOT_OBJ_TYPE_BLOB,
192 1785f84a 2018-12-23 stsp GOT_OBJ_TYPE_TAG,
194 1785f84a 2018-12-23 stsp int type = 0;
195 9b31ed65 2022-02-12 thomas size_t size = 0;
197 9b31ed65 2022-02-12 thomas char *end;
199 1785f84a 2018-12-23 stsp *obj = NULL;
201 9b31ed65 2022-02-12 thomas end = memchr(buf, '\0', len);
202 9b31ed65 2022-02-12 thomas if (end == NULL)
203 9ef4ac16 2019-04-13 stsp return got_error(GOT_ERR_BAD_OBJ_HDR);
205 ff2a4428 2019-03-19 stsp for (i = 0; i < nitems(obj_labels); i++) {
206 ff2a4428 2019-03-19 stsp const char *label = obj_labels[i];
207 ff2a4428 2019-03-19 stsp size_t label_len = strlen(label);
208 1785f84a 2018-12-23 stsp const char *errstr;
210 9b31ed65 2022-02-12 thomas if (len <= label_len || buf + label_len >= end ||
211 9b31ed65 2022-02-12 thomas strncmp(buf, label, label_len) != 0)
214 1785f84a 2018-12-23 stsp type = obj_types[i];
215 ff2a4428 2019-03-19 stsp size = strtonum(buf + label_len, 0, LONG_MAX, &errstr);
216 1785f84a 2018-12-23 stsp if (errstr != NULL)
217 1785f84a 2018-12-23 stsp return got_error(GOT_ERR_BAD_OBJ_HDR);
221 1785f84a 2018-12-23 stsp if (type == 0)
222 1785f84a 2018-12-23 stsp return got_error(GOT_ERR_BAD_OBJ_HDR);
224 1785f84a 2018-12-23 stsp *obj = calloc(1, sizeof(**obj));
225 1785f84a 2018-12-23 stsp if (*obj == NULL)
226 638f9024 2019-05-13 stsp return got_error_from_errno("calloc");
227 1785f84a 2018-12-23 stsp (*obj)->type = type;
228 9b31ed65 2022-02-12 thomas (*obj)->hdrlen = end - buf + 1;
229 1785f84a 2018-12-23 stsp (*obj)->size = size;
230 1785f84a 2018-12-23 stsp return NULL;
233 1785f84a 2018-12-23 stsp const struct got_error *
234 1785f84a 2018-12-23 stsp got_object_read_header(struct got_object **obj, int fd)
236 1785f84a 2018-12-23 stsp const struct got_error *err;
237 23bc48a9 2019-03-19 stsp struct got_inflate_buf zb;
238 dbaa2362 2021-09-28 thomas uint8_t *buf;
239 1785f84a 2018-12-23 stsp const size_t zbsize = 64;
240 1785f84a 2018-12-23 stsp size_t outlen, totlen;
241 1785f84a 2018-12-23 stsp int nbuf = 1;
243 1785f84a 2018-12-23 stsp *obj = NULL;
245 1785f84a 2018-12-23 stsp buf = malloc(zbsize);
246 1785f84a 2018-12-23 stsp if (buf == NULL)
247 638f9024 2019-05-13 stsp return got_error_from_errno("malloc");
248 9b31ed65 2022-02-12 thomas buf[0] = '\0';
250 1e87a3c3 2020-03-18 stsp err = got_inflate_init(&zb, buf, zbsize, NULL);
252 1785f84a 2018-12-23 stsp return err;
254 1785f84a 2018-12-23 stsp totlen = 0;
256 3ab5e33c 2020-03-18 stsp err = got_inflate_read_fd(&zb, fd, &outlen, NULL);
259 1785f84a 2018-12-23 stsp if (outlen == 0)
261 1785f84a 2018-12-23 stsp totlen += outlen;
262 dedbbd9d 2019-04-13 stsp if (memchr(zb.outbuf, '\0', outlen) == NULL) {
263 dbaa2362 2021-09-28 thomas uint8_t *newbuf;
265 1785f84a 2018-12-23 stsp newbuf = recallocarray(buf, nbuf - 1, nbuf, zbsize);
266 1785f84a 2018-12-23 stsp if (newbuf == NULL) {
267 638f9024 2019-05-13 stsp err = got_error_from_errno("recallocarray");
270 1785f84a 2018-12-23 stsp buf = newbuf;
271 1785f84a 2018-12-23 stsp zb.outbuf = newbuf + totlen;
272 1785f84a 2018-12-23 stsp zb.outlen = (nbuf * zbsize) - totlen;
274 dedbbd9d 2019-04-13 stsp } while (memchr(zb.outbuf, '\0', outlen) == NULL);
276 1785f84a 2018-12-23 stsp err = got_object_parse_header(obj, buf, totlen);
279 1785f84a 2018-12-23 stsp got_inflate_end(&zb);
280 1785f84a 2018-12-23 stsp return err;
283 3efd8e31 2022-10-23 thomas const struct got_error *
284 3efd8e31 2022-10-23 thomas got_object_read_raw(uint8_t **outbuf, off_t *size, size_t *hdrlen,
285 3efd8e31 2022-10-23 thomas size_t max_in_mem_size, int outfd, struct got_object_id *expected_id,
286 3efd8e31 2022-10-23 thomas int infd)
288 3efd8e31 2022-10-23 thomas const struct got_error *err = NULL;
289 3efd8e31 2022-10-23 thomas struct got_object *obj;
290 3efd8e31 2022-10-23 thomas struct got_inflate_checksum csum;
291 b16893ba 2023-02-24 thomas struct got_object_id id;
292 b16893ba 2023-02-24 thomas struct got_hash ctx;
293 3efd8e31 2022-10-23 thomas size_t len, consumed;
294 3efd8e31 2022-10-23 thomas FILE *f = NULL;
296 3efd8e31 2022-10-23 thomas *outbuf = NULL;
297 3efd8e31 2022-10-23 thomas *size = 0;
298 3efd8e31 2022-10-23 thomas *hdrlen = 0;
300 b16893ba 2023-02-24 thomas got_hash_init(&ctx, GOT_HASH_SHA1);
301 3efd8e31 2022-10-23 thomas memset(&csum, 0, sizeof(csum));
302 b16893ba 2023-02-24 thomas csum.output_ctx = &ctx;
304 3efd8e31 2022-10-23 thomas if (lseek(infd, SEEK_SET, 0) == -1)
305 3efd8e31 2022-10-23 thomas return got_error_from_errno("lseek");
307 3efd8e31 2022-10-23 thomas err = got_object_read_header(&obj, infd);
309 3efd8e31 2022-10-23 thomas return err;
311 3efd8e31 2022-10-23 thomas if (lseek(infd, SEEK_SET, 0) == -1)
312 3efd8e31 2022-10-23 thomas return got_error_from_errno("lseek");
314 3efd8e31 2022-10-23 thomas if (obj->size + obj->hdrlen <= max_in_mem_size) {
315 3efd8e31 2022-10-23 thomas err = got_inflate_to_mem_fd(outbuf, &len, &consumed, &csum,
316 3efd8e31 2022-10-23 thomas obj->size + obj->hdrlen, infd);
320 3efd8e31 2022-10-23 thomas * XXX This uses an extra file descriptor for no good reason.
321 3efd8e31 2022-10-23 thomas * We should have got_inflate_fd_to_fd().
323 3efd8e31 2022-10-23 thomas fd = dup(infd);
324 3efd8e31 2022-10-23 thomas if (fd == -1)
325 3efd8e31 2022-10-23 thomas return got_error_from_errno("dup");
326 3efd8e31 2022-10-23 thomas f = fdopen(fd, "r");
327 3efd8e31 2022-10-23 thomas if (f == NULL) {
328 3efd8e31 2022-10-23 thomas err = got_error_from_errno("fdopen");
330 3efd8e31 2022-10-23 thomas close(fd);
331 3efd8e31 2022-10-23 thomas goto done;
333 3efd8e31 2022-10-23 thomas err = got_inflate_to_fd(&len, f, &csum, outfd);
336 3efd8e31 2022-10-23 thomas goto done;
338 3efd8e31 2022-10-23 thomas if (len < obj->hdrlen || len != obj->hdrlen + obj->size) {
339 3efd8e31 2022-10-23 thomas err = got_error(GOT_ERR_BAD_OBJ_HDR);
340 3efd8e31 2022-10-23 thomas goto done;
343 b16893ba 2023-02-24 thomas got_hash_final_object_id(&ctx, &id);
344 b16893ba 2023-02-24 thomas if (got_object_id_cmp(expected_id, &id) != 0) {
345 dc43cdc9 2023-02-07 thomas err = got_error_checksum(expected_id);
346 3efd8e31 2022-10-23 thomas goto done;
349 3efd8e31 2022-10-23 thomas *size = obj->size;
350 3efd8e31 2022-10-23 thomas *hdrlen = obj->hdrlen;
352 3efd8e31 2022-10-23 thomas got_object_close(obj);
353 3efd8e31 2022-10-23 thomas if (f && fclose(f) == EOF && err == NULL)
354 3efd8e31 2022-10-23 thomas err = got_error_from_errno("fclose");
355 3efd8e31 2022-10-23 thomas return err;
358 a440fac0 2018-09-06 stsp struct got_commit_object *
359 a440fac0 2018-09-06 stsp got_object_commit_alloc_partial(void)
361 a440fac0 2018-09-06 stsp struct got_commit_object *commit;
363 a440fac0 2018-09-06 stsp commit = calloc(1, sizeof(*commit));
364 a440fac0 2018-09-06 stsp if (commit == NULL)
365 a440fac0 2018-09-06 stsp return NULL;
366 acf0c7c6 2018-11-05 stsp commit->tree_id = malloc(sizeof(*commit->tree_id));
367 a440fac0 2018-09-06 stsp if (commit->tree_id == NULL) {
368 a440fac0 2018-09-06 stsp free(commit);
369 a440fac0 2018-09-06 stsp return NULL;
372 dbdddfee 2021-06-23 naddy STAILQ_INIT(&commit->parent_ids);
374 a440fac0 2018-09-06 stsp return commit;
377 a440fac0 2018-09-06 stsp const struct got_error *
378 a440fac0 2018-09-06 stsp got_object_commit_add_parent(struct got_commit_object *commit,
379 a440fac0 2018-09-06 stsp const char *id_str)
381 a440fac0 2018-09-06 stsp const struct got_error *err = NULL;
382 a440fac0 2018-09-06 stsp struct got_object_qid *qid;
384 5df4932d 2018-11-05 stsp err = got_object_qid_alloc_partial(&qid);
386 7762fe12 2018-11-05 stsp return err;
388 c8ae092d 2023-02-23 thomas if (!got_parse_object_id(&qid->id, id_str, GOT_HASH_SHA1)) {
389 a440fac0 2018-09-06 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
390 00eb6a1f 2019-07-15 stsp got_object_qid_free(qid);
391 a440fac0 2018-09-06 stsp return err;
394 dbdddfee 2021-06-23 naddy STAILQ_INSERT_TAIL(&commit->parent_ids, qid, entry);
395 a440fac0 2018-09-06 stsp commit->nparents++;
397 a440fac0 2018-09-06 stsp return NULL;
400 a440fac0 2018-09-06 stsp static const struct got_error *
401 a440fac0 2018-09-06 stsp parse_gmtoff(time_t *gmtoff, const char *tzstr)
403 a440fac0 2018-09-06 stsp int sign = 1;
404 a440fac0 2018-09-06 stsp const char *p = tzstr;
405 a440fac0 2018-09-06 stsp time_t h, m;
407 a440fac0 2018-09-06 stsp *gmtoff = 0;
409 a440fac0 2018-09-06 stsp if (*p == '-')
411 a440fac0 2018-09-06 stsp else if (*p != '+')
412 a440fac0 2018-09-06 stsp return got_error(GOT_ERR_BAD_OBJ_DATA);
414 6771d425 2022-11-17 thomas if (!isdigit((unsigned char)*p) &&
415 6771d425 2022-11-17 thomas !isdigit((unsigned char)*(p + 1)))
416 a440fac0 2018-09-06 stsp return got_error(GOT_ERR_BAD_OBJ_DATA);
417 a440fac0 2018-09-06 stsp h = (((*p - '0') * 10) + (*(p + 1) - '0'));
420 6771d425 2022-11-17 thomas if (!isdigit((unsigned char)*p) &&
421 6771d425 2022-11-17 thomas !isdigit((unsigned char)*(p + 1)))
422 a440fac0 2018-09-06 stsp return got_error(GOT_ERR_BAD_OBJ_DATA);
423 a440fac0 2018-09-06 stsp m = ((*p - '0') * 10) + (*(p + 1) - '0');
425 a440fac0 2018-09-06 stsp *gmtoff = (h * 60 * 60 + m * 60) * sign;
426 a440fac0 2018-09-06 stsp return NULL;
429 a440fac0 2018-09-06 stsp static const struct got_error *
430 ccb26ccd 2018-11-05 stsp parse_commit_time(time_t *time, time_t *gmtoff, char *committer)
432 a440fac0 2018-09-06 stsp const struct got_error *err = NULL;
433 a440fac0 2018-09-06 stsp const char *errstr;
434 a440fac0 2018-09-06 stsp char *space, *tzstr;
436 a440fac0 2018-09-06 stsp /* Parse and strip off trailing timezone indicator string. */
437 a440fac0 2018-09-06 stsp space = strrchr(committer, ' ');
438 a440fac0 2018-09-06 stsp if (space == NULL)
439 a440fac0 2018-09-06 stsp return got_error(GOT_ERR_BAD_OBJ_DATA);
440 a440fac0 2018-09-06 stsp tzstr = strdup(space + 1);
441 a440fac0 2018-09-06 stsp if (tzstr == NULL)
442 638f9024 2019-05-13 stsp return got_error_from_errno("strdup");
443 ccb26ccd 2018-11-05 stsp err = parse_gmtoff(gmtoff, tzstr);
444 a440fac0 2018-09-06 stsp free(tzstr);
445 b6b86fd1 2022-08-30 thomas if (err) {
446 9dbd8627 2021-02-04 stsp if (err->code != GOT_ERR_BAD_OBJ_DATA)
447 9dbd8627 2021-02-04 stsp return err;
448 9dbd8627 2021-02-04 stsp /* Old versions of Git omitted the timestamp. */
450 9dbd8627 2021-02-04 stsp *gmtoff = 0;
451 9dbd8627 2021-02-04 stsp return NULL;
453 a440fac0 2018-09-06 stsp *space = '\0';
455 a440fac0 2018-09-06 stsp /* Timestamp is separated from committer name + email by space. */
456 a440fac0 2018-09-06 stsp space = strrchr(committer, ' ');
457 a440fac0 2018-09-06 stsp if (space == NULL)
458 a440fac0 2018-09-06 stsp return got_error(GOT_ERR_BAD_OBJ_DATA);
460 09867e48 2019-08-13 stsp /* Timestamp parsed here is expressed as UNIX timestamp (UTC). */
461 ccb26ccd 2018-11-05 stsp *time = strtonum(space + 1, 0, INT64_MAX, &errstr);
462 a440fac0 2018-09-06 stsp if (errstr)
463 a440fac0 2018-09-06 stsp return got_error(GOT_ERR_BAD_OBJ_DATA);
465 a440fac0 2018-09-06 stsp /* Strip off parsed time information, leaving just author and email. */
466 a440fac0 2018-09-06 stsp *space = '\0';
468 a440fac0 2018-09-06 stsp return NULL;
472 03fa71c8 2018-09-06 stsp got_object_commit_close(struct got_commit_object *commit)
474 03fa71c8 2018-09-06 stsp if (commit->refcnt > 0) {
475 03fa71c8 2018-09-06 stsp commit->refcnt--;
476 03fa71c8 2018-09-06 stsp if (commit->refcnt > 0)
480 dd88155e 2019-06-29 stsp got_object_id_queue_free(&commit->parent_ids);
481 03fa71c8 2018-09-06 stsp free(commit->tree_id);
482 03fa71c8 2018-09-06 stsp free(commit->author);
483 03fa71c8 2018-09-06 stsp free(commit->committer);
484 03fa71c8 2018-09-06 stsp free(commit->logmsg);
485 03fa71c8 2018-09-06 stsp free(commit);
488 45d799e2 2018-12-23 stsp struct got_object_id *
489 45d799e2 2018-12-23 stsp got_object_commit_get_tree_id(struct got_commit_object *commit)
491 45d799e2 2018-12-23 stsp return commit->tree_id;
495 45d799e2 2018-12-23 stsp got_object_commit_get_nparents(struct got_commit_object *commit)
497 45d799e2 2018-12-23 stsp return commit->nparents;
500 45d799e2 2018-12-23 stsp const struct got_object_id_queue *
501 45d799e2 2018-12-23 stsp got_object_commit_get_parent_ids(struct got_commit_object *commit)
503 45d799e2 2018-12-23 stsp return &commit->parent_ids;
506 45d799e2 2018-12-23 stsp const char *
507 45d799e2 2018-12-23 stsp got_object_commit_get_author(struct got_commit_object *commit)
509 45d799e2 2018-12-23 stsp return commit->author;
513 45d799e2 2018-12-23 stsp got_object_commit_get_author_time(struct got_commit_object *commit)
515 45d799e2 2018-12-23 stsp return commit->author_time;
518 45d799e2 2018-12-23 stsp time_t got_object_commit_get_author_gmtoff(struct got_commit_object *commit)
520 45d799e2 2018-12-23 stsp return commit->author_gmtoff;
523 45d799e2 2018-12-23 stsp const char *
524 45d799e2 2018-12-23 stsp got_object_commit_get_committer(struct got_commit_object *commit)
526 45d799e2 2018-12-23 stsp return commit->committer;
530 45d799e2 2018-12-23 stsp got_object_commit_get_committer_time(struct got_commit_object *commit)
532 45d799e2 2018-12-23 stsp return commit->committer_time;
536 45d799e2 2018-12-23 stsp got_object_commit_get_committer_gmtoff(struct got_commit_object *commit)
538 45d799e2 2018-12-23 stsp return commit->committer_gmtoff;
541 5943eee2 2019-08-13 stsp const struct got_error *
542 5943eee2 2019-08-13 stsp got_object_commit_get_logmsg(char **logmsg, struct got_commit_object *commit)
544 5943eee2 2019-08-13 stsp const struct got_error *err = NULL;
545 b9c41b54 2021-08-03 stsp const char *src;
547 5943eee2 2019-08-13 stsp size_t len;
549 b9c41b54 2021-08-03 stsp len = strlen(commit->logmsg);
550 b9c41b54 2021-08-03 stsp *logmsg = malloc(len + 2); /* leave room for a trailing \n and \0 */
551 b9c41b54 2021-08-03 stsp if (*logmsg == NULL)
552 b9c41b54 2021-08-03 stsp return got_error_from_errno("malloc");
555 b9c41b54 2021-08-03 stsp * Strip out unusual headers. Headers are separated from the commit
556 b9c41b54 2021-08-03 stsp * message body by a single empty line.
558 b9c41b54 2021-08-03 stsp src = commit->logmsg;
559 b9c41b54 2021-08-03 stsp dst = *logmsg;
560 b9c41b54 2021-08-03 stsp while (*src != '\0' && *src != '\n') {
561 b9c41b54 2021-08-03 stsp int copy_header = 1, eol = 0;
562 b9c41b54 2021-08-03 stsp if (strncmp(src, GOT_COMMIT_LABEL_TREE,
563 b9c41b54 2021-08-03 stsp strlen(GOT_COMMIT_LABEL_TREE)) != 0 &&
564 b9c41b54 2021-08-03 stsp strncmp(src, GOT_COMMIT_LABEL_AUTHOR,
565 b9c41b54 2021-08-03 stsp strlen(GOT_COMMIT_LABEL_AUTHOR)) != 0 &&
566 b9c41b54 2021-08-03 stsp strncmp(src, GOT_COMMIT_LABEL_PARENT,
567 b9c41b54 2021-08-03 stsp strlen(GOT_COMMIT_LABEL_PARENT)) != 0 &&
568 b9c41b54 2021-08-03 stsp strncmp(src, GOT_COMMIT_LABEL_COMMITTER,
569 b9c41b54 2021-08-03 stsp strlen(GOT_COMMIT_LABEL_COMMITTER)) != 0)
570 b9c41b54 2021-08-03 stsp copy_header = 0;
572 b9c41b54 2021-08-03 stsp while (*src != '\0' && !eol) {
573 b9c41b54 2021-08-03 stsp if (copy_header) {
574 b9c41b54 2021-08-03 stsp *dst = *src;
577 b9c41b54 2021-08-03 stsp if (*src == '\n')
582 b9c41b54 2021-08-03 stsp *dst = '\0';
584 b9c41b54 2021-08-03 stsp if (strlcat(*logmsg, src, len + 1) >= len + 1) {
585 b9c41b54 2021-08-03 stsp err = got_error(GOT_ERR_NO_SPACE);
589 5943eee2 2019-08-13 stsp /* Trim redundant trailing whitespace. */
590 5943eee2 2019-08-13 stsp len = strlen(*logmsg);
591 5943eee2 2019-08-13 stsp while (len > 1 && isspace((unsigned char)(*logmsg)[len - 2]) &&
592 5943eee2 2019-08-13 stsp isspace((unsigned char)(*logmsg)[len - 1])) {
593 5943eee2 2019-08-13 stsp (*logmsg)[len - 1] = '\0';
597 b9c41b54 2021-08-03 stsp /* Append a trailing newline if missing. */
598 b9c41b54 2021-08-03 stsp if (len > 0 && (*logmsg)[len - 1] != '\n') {
599 b9c41b54 2021-08-03 stsp (*logmsg)[len] = '\n';
600 b9c41b54 2021-08-03 stsp (*logmsg)[len + 1] = '\0';
604 5943eee2 2019-08-13 stsp free(*logmsg);
605 5943eee2 2019-08-13 stsp *logmsg = NULL;
607 5943eee2 2019-08-13 stsp return err;
610 24ea5512 2019-08-22 stsp const char *
611 24ea5512 2019-08-22 stsp got_object_commit_get_logmsg_raw(struct got_commit_object *commit)
613 24ea5512 2019-08-22 stsp return commit->logmsg;
616 a440fac0 2018-09-06 stsp const struct got_error *
617 5e0b25c4 2018-12-24 stsp got_object_parse_commit(struct got_commit_object **commit, char *buf,
618 5e0b25c4 2018-12-24 stsp size_t len)
620 a440fac0 2018-09-06 stsp const struct got_error *err = NULL;
621 c8ae092d 2023-02-23 thomas enum got_hash_algorithm algo = GOT_HASH_SHA1;
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 c8ae092d 2023-02-23 thomas if (!got_parse_object_id((*commit)->tree_id, s, algo)) {
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 3efd8e31 2022-10-23 thomas const struct got_error *
744 3efd8e31 2022-10-23 thomas got_object_read_commit(struct got_commit_object **commit, int fd,
745 3efd8e31 2022-10-23 thomas struct got_object_id *expected_id, size_t expected_size)
747 3efd8e31 2022-10-23 thomas struct got_object *obj = NULL;
748 3efd8e31 2022-10-23 thomas const struct got_error *err = NULL;
749 3efd8e31 2022-10-23 thomas size_t len;
750 3efd8e31 2022-10-23 thomas uint8_t *p;
751 3efd8e31 2022-10-23 thomas struct got_inflate_checksum csum;
752 b16893ba 2023-02-24 thomas struct got_hash ctx;
753 3efd8e31 2022-10-23 thomas struct got_object_id id;
755 b16893ba 2023-02-24 thomas got_hash_init(&ctx, GOT_HASH_SHA1);
756 3efd8e31 2022-10-23 thomas memset(&csum, 0, sizeof(csum));
757 b16893ba 2023-02-24 thomas csum.output_ctx = &ctx;
759 3efd8e31 2022-10-23 thomas err = got_inflate_to_mem_fd(&p, &len, NULL, &csum, expected_size, fd);
761 3efd8e31 2022-10-23 thomas return err;
763 b16893ba 2023-02-24 thomas got_hash_final_object_id(&ctx, &id);
764 1ba62ba4 2023-02-03 thomas if (got_object_id_cmp(expected_id, &id) != 0) {
765 dc43cdc9 2023-02-07 thomas err = got_error_checksum(expected_id);
766 3efd8e31 2022-10-23 thomas goto done;
769 3efd8e31 2022-10-23 thomas err = got_object_parse_header(&obj, p, len);
771 3efd8e31 2022-10-23 thomas goto done;
773 3efd8e31 2022-10-23 thomas if (len < obj->hdrlen + obj->size) {
774 3efd8e31 2022-10-23 thomas err = got_error(GOT_ERR_BAD_OBJ_DATA);
775 3efd8e31 2022-10-23 thomas goto done;
778 3efd8e31 2022-10-23 thomas if (obj->type != GOT_OBJ_TYPE_COMMIT) {
779 3efd8e31 2022-10-23 thomas err = got_error(GOT_ERR_OBJ_TYPE);
780 3efd8e31 2022-10-23 thomas goto done;
783 3efd8e31 2022-10-23 thomas /* Skip object header. */
784 3efd8e31 2022-10-23 thomas len -= obj->hdrlen;
785 3efd8e31 2022-10-23 thomas err = got_object_parse_commit(commit, p + obj->hdrlen, len);
789 3efd8e31 2022-10-23 thomas got_object_close(obj);
790 3efd8e31 2022-10-23 thomas 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 78e7b7b8 2022-05-19 thomas 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 78e7b7b8 2022-05-19 thomas 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 78e7b7b8 2022-05-19 thomas if (space == NULL || space <= buf)
820 78e7b7b8 2022-05-19 thomas return got_error(GOT_ERR_BAD_OBJ_DATA);
822 78e7b7b8 2022-05-19 thomas pte->mode = 0;
824 8914529d 2019-04-13 stsp while (p < space) {
825 a8771ebd 2023-01-19 thomas if (*p < '0' || *p > '7')
826 78e7b7b8 2022-05-19 thomas return got_error(GOT_ERR_BAD_OBJ_DATA);
827 78e7b7b8 2022-05-19 thomas pte->mode <<= 3;
828 78e7b7b8 2022-05-19 thomas pte->mode |= *p - '0';
832 78e7b7b8 2022-05-19 thomas if (*elen > maxlen || maxlen - *elen < SHA1_DIGEST_LENGTH)
833 78e7b7b8 2022-05-19 thomas return got_error(GOT_ERR_BAD_OBJ_DATA);
835 78e7b7b8 2022-05-19 thomas pte->name = space + 1;
836 78e7b7b8 2022-05-19 thomas pte->namelen = strlen(pte->name);
837 68bf1b1e 2018-11-07 stsp buf += *elen;
838 78e7b7b8 2022-05-19 thomas pte->id = buf;
839 a440fac0 2018-09-06 stsp *elen += SHA1_DIGEST_LENGTH;
840 78e7b7b8 2022-05-19 thomas return NULL;
843 78e7b7b8 2022-05-19 thomas static int
844 78e7b7b8 2022-05-19 thomas pte_cmp(const void *pa, const void *pb)
846 78e7b7b8 2022-05-19 thomas const struct got_parsed_tree_entry *a = pa, *b = pb;
848 78e7b7b8 2022-05-19 thomas return got_path_cmp(a->name, b->name, a->namelen, b->namelen);
851 a440fac0 2018-09-06 stsp const struct got_error *
852 c77e00b3 2022-10-18 thomas got_object_parse_tree(struct got_parsed_tree_entry **entries, size_t *nentries,
853 c77e00b3 2022-10-18 thomas size_t *nentries_alloc, uint8_t *buf, size_t len)
855 3022d272 2019-11-14 stsp const struct got_error *err = NULL;
856 c77e00b3 2022-10-18 thomas size_t remain = len;
857 78e7b7b8 2022-05-19 thomas const size_t nalloc = 16;
858 78e7b7b8 2022-05-19 thomas 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 c77e00b3 2022-10-18 thomas if (*nentries >= *nentries_alloc) {
869 c77e00b3 2022-10-18 thomas pte = recallocarray(*entries, *nentries_alloc,
870 c77e00b3 2022-10-18 thomas *nentries_alloc + nalloc, sizeof(**entries));
871 78e7b7b8 2022-05-19 thomas if (pte == NULL) {
872 78e7b7b8 2022-05-19 thomas err = got_error_from_errno("recallocarray");
873 78e7b7b8 2022-05-19 thomas goto done;
875 78e7b7b8 2022-05-19 thomas *entries = pte;
876 c77e00b3 2022-10-18 thomas *nentries_alloc += nalloc;
879 78e7b7b8 2022-05-19 thomas pte = &(*entries)[*nentries];
880 78e7b7b8 2022-05-19 thomas 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 78e7b7b8 2022-05-19 thomas if (*nentries > 1) {
894 78e7b7b8 2022-05-19 thomas mergesort(*entries, *nentries, sizeof(**entries), pte_cmp);
896 78e7b7b8 2022-05-19 thomas for (i = 0; i < *nentries - 1; i++) {
897 78e7b7b8 2022-05-19 thomas struct got_parsed_tree_entry *prev = &(*entries)[i];
898 78e7b7b8 2022-05-19 thomas pte = &(*entries)[i + 1];
899 78e7b7b8 2022-05-19 thomas if (got_path_cmp(prev->name, pte->name,
900 78e7b7b8 2022-05-19 thomas prev->namelen, pte->namelen) == 0) {
901 78e7b7b8 2022-05-19 thomas 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 3efd8e31 2022-10-23 thomas const struct got_error *
913 3efd8e31 2022-10-23 thomas got_object_read_tree(struct got_parsed_tree_entry **entries, size_t *nentries,
914 3efd8e31 2022-10-23 thomas size_t *nentries_alloc, uint8_t **p, int fd,
915 3efd8e31 2022-10-23 thomas struct got_object_id *expected_id)
917 3efd8e31 2022-10-23 thomas const struct got_error *err = NULL;
918 3efd8e31 2022-10-23 thomas struct got_object *obj = NULL;
919 3efd8e31 2022-10-23 thomas size_t len;
920 3efd8e31 2022-10-23 thomas struct got_inflate_checksum csum;
921 b16893ba 2023-02-24 thomas struct got_hash ctx;
922 3efd8e31 2022-10-23 thomas struct got_object_id id;
924 b16893ba 2023-02-24 thomas got_hash_init(&ctx, GOT_HASH_SHA1);
925 3efd8e31 2022-10-23 thomas memset(&csum, 0, sizeof(csum));
926 b16893ba 2023-02-24 thomas csum.output_ctx = &ctx;
928 3efd8e31 2022-10-23 thomas err = got_inflate_to_mem_fd(p, &len, NULL, &csum, 0, fd);
930 3efd8e31 2022-10-23 thomas return err;
932 b16893ba 2023-02-24 thomas got_hash_final_object_id(&ctx, &id);
933 1ba62ba4 2023-02-03 thomas if (got_object_id_cmp(expected_id, &id) != 0) {
934 dc43cdc9 2023-02-07 thomas err = got_error_checksum(expected_id);
935 3efd8e31 2022-10-23 thomas goto done;
938 3efd8e31 2022-10-23 thomas err = got_object_parse_header(&obj, *p, len);
940 3efd8e31 2022-10-23 thomas goto done;
942 3efd8e31 2022-10-23 thomas if (len < obj->hdrlen + obj->size) {
943 3efd8e31 2022-10-23 thomas err = got_error(GOT_ERR_BAD_OBJ_DATA);
944 3efd8e31 2022-10-23 thomas goto done;
947 3efd8e31 2022-10-23 thomas /* Skip object header. */
948 3efd8e31 2022-10-23 thomas len -= obj->hdrlen;
949 3efd8e31 2022-10-23 thomas err = got_object_parse_tree(entries, nentries, nentries_alloc,
950 3efd8e31 2022-10-23 thomas *p + obj->hdrlen, len);
953 3efd8e31 2022-10-23 thomas got_object_close(obj);
954 3efd8e31 2022-10-23 thomas 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 c8ae092d 2023-02-23 thomas enum got_hash_algorithm algo = GOT_HASH_SHA1;
977 f4a881ce 2018-11-17 stsp size_t remain = len;
978 f4a881ce 2018-11-17 stsp char *s = buf;
979 ff2a4428 2019-03-19 stsp size_t label_len;
981 4793d91b 2019-09-22 stsp if (remain == 0)
982 4793d91b 2019-09-22 stsp return got_error(GOT_ERR_BAD_OBJ_DATA);
984 f4a881ce 2018-11-17 stsp *tag = calloc(1, sizeof(**tag));
985 f4a881ce 2018-11-17 stsp if (*tag == NULL)
986 638f9024 2019-05-13 stsp return got_error_from_errno("calloc");
988 ff2a4428 2019-03-19 stsp label_len = strlen(GOT_TAG_LABEL_OBJECT);
989 ff2a4428 2019-03-19 stsp if (strncmp(s, GOT_TAG_LABEL_OBJECT, label_len) == 0) {
990 ff2a4428 2019-03-19 stsp remain -= label_len;
991 f4a881ce 2018-11-17 stsp if (remain < SHA1_DIGEST_STRING_LENGTH) {
992 f4a881ce 2018-11-17 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
995 ff2a4428 2019-03-19 stsp s += label_len;
996 c8ae092d 2023-02-23 thomas if (!got_parse_object_id(&(*tag)->id, s, algo)) {
997 f4a881ce 2018-11-17 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
1000 f4a881ce 2018-11-17 stsp remain -= SHA1_DIGEST_STRING_LENGTH;
1001 f4a881ce 2018-11-17 stsp s += SHA1_DIGEST_STRING_LENGTH;
1003 f4a881ce 2018-11-17 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
1004 f4a881ce 2018-11-17 stsp goto done;
1007 f4a881ce 2018-11-17 stsp if (remain <= 0) {
1008 f4a881ce 2018-11-17 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
1009 f4a881ce 2018-11-17 stsp goto done;
1012 ff2a4428 2019-03-19 stsp label_len = strlen(GOT_TAG_LABEL_TYPE);
1013 ff2a4428 2019-03-19 stsp if (strncmp(s, GOT_TAG_LABEL_TYPE, label_len) == 0) {
1014 ff2a4428 2019-03-19 stsp remain -= label_len;
1015 f4a881ce 2018-11-17 stsp if (remain <= 0) {
1016 f4a881ce 2018-11-17 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
1017 f4a881ce 2018-11-17 stsp goto done;
1019 ff2a4428 2019-03-19 stsp s += label_len;
1020 ff2a4428 2019-03-19 stsp if (strncmp(s, GOT_OBJ_LABEL_COMMIT,
1021 ff2a4428 2019-03-19 stsp strlen(GOT_OBJ_LABEL_COMMIT)) == 0) {
1022 f4a881ce 2018-11-17 stsp (*tag)->obj_type = GOT_OBJ_TYPE_COMMIT;
1023 ff2a4428 2019-03-19 stsp label_len = strlen(GOT_OBJ_LABEL_COMMIT);
1024 ff2a4428 2019-03-19 stsp s += label_len;
1025 ff2a4428 2019-03-19 stsp remain -= label_len;
1026 ff2a4428 2019-03-19 stsp } else if (strncmp(s, GOT_OBJ_LABEL_TREE,
1027 ff2a4428 2019-03-19 stsp strlen(GOT_OBJ_LABEL_TREE)) == 0) {
1028 f4a881ce 2018-11-17 stsp (*tag)->obj_type = GOT_OBJ_TYPE_TREE;
1029 ff2a4428 2019-03-19 stsp label_len = strlen(GOT_OBJ_LABEL_TREE);
1030 ff2a4428 2019-03-19 stsp s += label_len;
1031 ff2a4428 2019-03-19 stsp remain -= label_len;
1032 ff2a4428 2019-03-19 stsp } else if (strncmp(s, GOT_OBJ_LABEL_BLOB,
1033 ff2a4428 2019-03-19 stsp strlen(GOT_OBJ_LABEL_BLOB)) == 0) {
1034 f4a881ce 2018-11-17 stsp (*tag)->obj_type = GOT_OBJ_TYPE_BLOB;
1035 ff2a4428 2019-03-19 stsp label_len = strlen(GOT_OBJ_LABEL_BLOB);
1036 ff2a4428 2019-03-19 stsp s += label_len;
1037 ff2a4428 2019-03-19 stsp remain -= label_len;
1038 ff2a4428 2019-03-19 stsp } else if (strncmp(s, GOT_OBJ_LABEL_TAG,
1039 ff2a4428 2019-03-19 stsp strlen(GOT_OBJ_LABEL_TAG)) == 0) {
1040 f4a881ce 2018-11-17 stsp (*tag)->obj_type = GOT_OBJ_TYPE_TAG;
1041 ff2a4428 2019-03-19 stsp label_len = strlen(GOT_OBJ_LABEL_TAG);
1042 ff2a4428 2019-03-19 stsp s += label_len;
1043 ff2a4428 2019-03-19 stsp remain -= label_len;
1045 f4a881ce 2018-11-17 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
1046 f4a881ce 2018-11-17 stsp goto done;
1049 f4a881ce 2018-11-17 stsp if (remain <= 0 || *s != '\n') {
1050 f4a881ce 2018-11-17 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
1051 f4a881ce 2018-11-17 stsp goto done;
1055 f4a881ce 2018-11-17 stsp if (remain <= 0) {
1056 f4a881ce 2018-11-17 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
1057 f4a881ce 2018-11-17 stsp goto done;
1060 f4a881ce 2018-11-17 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
1061 f4a881ce 2018-11-17 stsp goto done;
1064 ff2a4428 2019-03-19 stsp label_len = strlen(GOT_TAG_LABEL_TAG);
1065 ff2a4428 2019-03-19 stsp if (strncmp(s, GOT_TAG_LABEL_TAG, label_len) == 0) {
1067 f4a881ce 2018-11-17 stsp size_t slen;
1068 ff2a4428 2019-03-19 stsp remain -= label_len;
1069 f4a881ce 2018-11-17 stsp if (remain <= 0) {
1070 f4a881ce 2018-11-17 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
1071 f4a881ce 2018-11-17 stsp goto done;
1073 ff2a4428 2019-03-19 stsp s += label_len;
1074 dedbbd9d 2019-04-13 stsp p = memchr(s, '\n', remain);
1075 f4a881ce 2018-11-17 stsp if (p == NULL) {
1076 f4a881ce 2018-11-17 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
1077 f4a881ce 2018-11-17 stsp goto done;
1079 f4a881ce 2018-11-17 stsp *p = '\0';
1080 f4a881ce 2018-11-17 stsp slen = strlen(s);
1081 f4a881ce 2018-11-17 stsp (*tag)->tag = strndup(s, slen);
1082 f4a881ce 2018-11-17 stsp if ((*tag)->tag == NULL) {
1083 638f9024 2019-05-13 stsp err = got_error_from_errno("strndup");
1084 f4a881ce 2018-11-17 stsp goto done;
1086 f4a881ce 2018-11-17 stsp s += slen + 1;
1087 f4a881ce 2018-11-17 stsp remain -= slen + 1;
1088 f4a881ce 2018-11-17 stsp if (remain <= 0) {
1089 f4a881ce 2018-11-17 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
1090 f4a881ce 2018-11-17 stsp goto done;
1093 f4a881ce 2018-11-17 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
1094 f4a881ce 2018-11-17 stsp goto done;
1097 ff2a4428 2019-03-19 stsp label_len = strlen(GOT_TAG_LABEL_TAGGER);
1098 ff2a4428 2019-03-19 stsp if (strncmp(s, GOT_TAG_LABEL_TAGGER, label_len) == 0) {
1100 f4a881ce 2018-11-17 stsp size_t slen;
1102 ff2a4428 2019-03-19 stsp remain -= label_len;
1103 f4a881ce 2018-11-17 stsp if (remain <= 0) {
1104 f4a881ce 2018-11-17 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
1105 f4a881ce 2018-11-17 stsp goto done;
1107 ff2a4428 2019-03-19 stsp s += label_len;
1108 dedbbd9d 2019-04-13 stsp p = memchr(s, '\n', remain);
1109 f4a881ce 2018-11-17 stsp if (p == NULL) {
1110 f4a881ce 2018-11-17 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
1111 f4a881ce 2018-11-17 stsp goto done;
1113 f4a881ce 2018-11-17 stsp *p = '\0';
1114 f4a881ce 2018-11-17 stsp slen = strlen(s);
1115 f4a881ce 2018-11-17 stsp err = parse_commit_time(&(*tag)->tagger_time,
1116 f4a881ce 2018-11-17 stsp &(*tag)->tagger_gmtoff, s);
1118 f4a881ce 2018-11-17 stsp goto done;
1119 f4a881ce 2018-11-17 stsp (*tag)->tagger = strdup(s);
1120 f4a881ce 2018-11-17 stsp if ((*tag)->tagger == NULL) {
1121 638f9024 2019-05-13 stsp err = got_error_from_errno("strdup");
1122 f4a881ce 2018-11-17 stsp goto done;
1124 f4a881ce 2018-11-17 stsp s += slen + 1;
1125 f4a881ce 2018-11-17 stsp remain -= slen + 1;
1126 5a8b373c 2020-12-18 stsp if (remain < 0) {
1127 f4a881ce 2018-11-17 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
1128 f4a881ce 2018-11-17 stsp goto done;
1131 e0e55b50 2019-02-01 stsp /* Some old tags in the Linux git repo have no tagger. */
1132 e0e55b50 2019-02-01 stsp (*tag)->tagger = strdup("");
1133 e0e55b50 2019-02-01 stsp if ((*tag)->tagger == NULL) {
1134 638f9024 2019-05-13 stsp err = got_error_from_errno("strdup");
1135 e0e55b50 2019-02-01 stsp goto done;
1139 f4a881ce 2018-11-17 stsp (*tag)->tagmsg = strndup(s, remain);
1140 f4a881ce 2018-11-17 stsp if ((*tag)->tagmsg == NULL) {
1141 638f9024 2019-05-13 stsp err = got_error_from_errno("strndup");
1142 f4a881ce 2018-11-17 stsp goto done;
1145 f4a881ce 2018-11-17 stsp if (err) {
1146 f4a881ce 2018-11-17 stsp got_object_tag_close(*tag);
1147 f4a881ce 2018-11-17 stsp *tag = NULL;
1149 3efd8e31 2022-10-23 thomas return err;
1152 3efd8e31 2022-10-23 thomas const struct got_error *
1153 946e0798 2022-11-06 thomas got_object_read_tag(struct got_tag_object **tag, int fd,
1154 3efd8e31 2022-10-23 thomas struct got_object_id *expected_id, size_t expected_size)
1156 3efd8e31 2022-10-23 thomas const struct got_error *err = NULL;
1157 3efd8e31 2022-10-23 thomas struct got_object *obj = NULL;
1158 3efd8e31 2022-10-23 thomas size_t len;
1159 3efd8e31 2022-10-23 thomas uint8_t *p;
1160 3efd8e31 2022-10-23 thomas struct got_inflate_checksum csum;
1161 b16893ba 2023-02-24 thomas struct got_hash ctx;
1162 3efd8e31 2022-10-23 thomas struct got_object_id id;
1164 b16893ba 2023-02-24 thomas got_hash_init(&ctx, GOT_HASH_SHA1);
1165 3efd8e31 2022-10-23 thomas memset(&csum, 0, sizeof(csum));
1166 b16893ba 2023-02-24 thomas csum.output_ctx = &ctx;
1168 3efd8e31 2022-10-23 thomas err = got_inflate_to_mem_fd(&p, &len, NULL, &csum,
1169 3efd8e31 2022-10-23 thomas expected_size, fd);
1170 3efd8e31 2022-10-23 thomas if (err)
1171 3efd8e31 2022-10-23 thomas return err;
1173 b16893ba 2023-02-24 thomas got_hash_final_object_id(&ctx, &id);
1174 1ba62ba4 2023-02-03 thomas if (got_object_id_cmp(expected_id, &id) != 0) {
1175 dc43cdc9 2023-02-07 thomas err = got_error_checksum(expected_id);
1176 3efd8e31 2022-10-23 thomas goto done;
1179 3efd8e31 2022-10-23 thomas err = got_object_parse_header(&obj, p, len);
1180 3efd8e31 2022-10-23 thomas if (err)
1181 3efd8e31 2022-10-23 thomas goto done;
1183 3efd8e31 2022-10-23 thomas if (len < obj->hdrlen + obj->size) {
1184 3efd8e31 2022-10-23 thomas err = got_error(GOT_ERR_BAD_OBJ_DATA);
1185 3efd8e31 2022-10-23 thomas goto done;
1188 3efd8e31 2022-10-23 thomas /* Skip object header. */
1189 3efd8e31 2022-10-23 thomas len -= obj->hdrlen;
1190 3efd8e31 2022-10-23 thomas err = got_object_parse_tag(tag, p + obj->hdrlen, len);
1192 3efd8e31 2022-10-23 thomas free(p);
1193 3efd8e31 2022-10-23 thomas if (obj)
1194 3efd8e31 2022-10-23 thomas got_object_close(obj);
1195 f4a881ce 2018-11-17 stsp return err;
1198 f4a881ce 2018-11-17 stsp const struct got_error *
1199 ad242220 2018-09-08 stsp got_read_file_to_mem(uint8_t **outbuf, size_t *outlen, FILE *f)
1201 a440fac0 2018-09-06 stsp const struct got_error *err = NULL;
1202 a440fac0 2018-09-06 stsp static const size_t blocksize = 512;
1203 a440fac0 2018-09-06 stsp size_t n, total, remain;
1204 a440fac0 2018-09-06 stsp uint8_t *buf;
1206 a440fac0 2018-09-06 stsp *outbuf = NULL;
1207 a440fac0 2018-09-06 stsp *outlen = 0;
1209 a440fac0 2018-09-06 stsp buf = malloc(blocksize);
1210 a440fac0 2018-09-06 stsp if (buf == NULL)
1211 638f9024 2019-05-13 stsp return got_error_from_errno("malloc");
1213 a440fac0 2018-09-06 stsp remain = blocksize;
1214 a440fac0 2018-09-06 stsp total = 0;
1216 a440fac0 2018-09-06 stsp if (remain == 0) {
1217 a440fac0 2018-09-06 stsp uint8_t *newbuf;
1218 a440fac0 2018-09-06 stsp newbuf = reallocarray(buf, 1, total + blocksize);
1219 a440fac0 2018-09-06 stsp if (newbuf == NULL) {
1220 638f9024 2019-05-13 stsp err = got_error_from_errno("reallocarray");
1221 a440fac0 2018-09-06 stsp goto done;
1223 a440fac0 2018-09-06 stsp buf = newbuf;
1224 a440fac0 2018-09-06 stsp remain += blocksize;
1226 a440fac0 2018-09-06 stsp n = fread(buf + total, 1, remain, f);
1227 a440fac0 2018-09-06 stsp if (n == 0) {
1228 a440fac0 2018-09-06 stsp if (ferror(f)) {
1229 a440fac0 2018-09-06 stsp err = got_ferror(f, GOT_ERR_IO);
1230 a440fac0 2018-09-06 stsp goto done;
1232 a440fac0 2018-09-06 stsp break; /* EOF */
1234 a440fac0 2018-09-06 stsp remain -= n;
1235 a440fac0 2018-09-06 stsp total += n;
1239 a440fac0 2018-09-06 stsp if (err == NULL) {
1240 a440fac0 2018-09-06 stsp *outbuf = buf;
1241 a440fac0 2018-09-06 stsp *outlen = total;
1243 a440fac0 2018-09-06 stsp free(buf);
1244 ad242220 2018-09-08 stsp return err;
