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 2ff12563 2018-09-15 stsp static const size_t len = SHA1_DIGEST_STRING_LENGTH;
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 2ff12563 2018-09-15 stsp if (got_sha1_digest_to_str(id->sha1, *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 03fa71c8 2018-09-06 stsp got_object_close(struct got_object *obj)
109 03fa71c8 2018-09-06 stsp if (obj->refcnt > 0) {
110 03fa71c8 2018-09-06 stsp obj->refcnt--;
111 03fa71c8 2018-09-06 stsp if (obj->refcnt > 0)
115 03fa71c8 2018-09-06 stsp if (obj->flags & GOT_OBJ_FLAG_DELTIFIED) {
116 03fa71c8 2018-09-06 stsp struct got_delta *delta;
117 dbdddfee 2021-06-23 naddy while (!STAILQ_EMPTY(&obj->deltas.entries)) {
118 dbdddfee 2021-06-23 naddy delta = STAILQ_FIRST(&obj->deltas.entries);
119 dbdddfee 2021-06-23 naddy STAILQ_REMOVE_HEAD(&obj->deltas.entries, entry);
120 2256993b 2019-07-15 stsp free(delta);
126 d3c116bf 2021-10-15 stsp const struct got_error *
127 d3c116bf 2021-10-15 stsp got_object_raw_close(struct got_raw_object *obj)
129 d3c116bf 2021-10-15 stsp const struct got_error *err = NULL;
131 d3c116bf 2021-10-15 stsp if (obj->refcnt > 0) {
132 d3c116bf 2021-10-15 stsp obj->refcnt--;
133 d3c116bf 2021-10-15 stsp if (obj->refcnt > 0)
134 d3c116bf 2021-10-15 stsp return NULL;
137 13b2bc37 2022-10-23 stsp if (obj->close_cb)
138 13b2bc37 2022-10-23 stsp obj->close_cb(obj);
140 64a8571e 2022-01-07 stsp if (obj->f == NULL) {
141 64a8571e 2022-01-07 stsp if (obj->fd != -1) {
142 64a8571e 2022-01-07 stsp if (munmap(obj->data, obj->hdrlen + obj->size) == -1)
143 64a8571e 2022-01-07 stsp err = got_error_from_errno("munmap");
144 64a8571e 2022-01-07 stsp if (close(obj->fd) == -1 && err == NULL)
145 64a8571e 2022-01-07 stsp err = got_error_from_errno("close");
147 64a8571e 2022-01-07 stsp free(obj->data);
149 64a8571e 2022-01-07 stsp if (fclose(obj->f) == EOF && err == NULL)
150 64a8571e 2022-01-07 stsp err = got_error_from_errno("fclose");
153 d3c116bf 2021-10-15 stsp return err;
157 03fa71c8 2018-09-06 stsp got_object_qid_free(struct got_object_qid *qid)
163 dd88155e 2019-06-29 stsp got_object_id_queue_free(struct got_object_id_queue *ids)
165 dd88155e 2019-06-29 stsp struct got_object_qid *qid;
167 dbdddfee 2021-06-23 naddy while (!STAILQ_EMPTY(ids)) {
168 dbdddfee 2021-06-23 naddy qid = STAILQ_FIRST(ids);
169 dbdddfee 2021-06-23 naddy STAILQ_REMOVE_HEAD(ids, entry);
170 dd88155e 2019-06-29 stsp got_object_qid_free(qid);
174 1785f84a 2018-12-23 stsp const struct got_error *
175 1785f84a 2018-12-23 stsp got_object_parse_header(struct got_object **obj, char *buf, size_t len)
177 ff2a4428 2019-03-19 stsp const char *obj_labels[] = {
178 ff2a4428 2019-03-19 stsp GOT_OBJ_LABEL_COMMIT,
179 ff2a4428 2019-03-19 stsp GOT_OBJ_LABEL_TREE,
180 ff2a4428 2019-03-19 stsp GOT_OBJ_LABEL_BLOB,
181 ff2a4428 2019-03-19 stsp GOT_OBJ_LABEL_TAG,
183 1785f84a 2018-12-23 stsp const int obj_types[] = {
184 1785f84a 2018-12-23 stsp GOT_OBJ_TYPE_COMMIT,
185 1785f84a 2018-12-23 stsp GOT_OBJ_TYPE_TREE,
186 1785f84a 2018-12-23 stsp GOT_OBJ_TYPE_BLOB,
187 1785f84a 2018-12-23 stsp GOT_OBJ_TYPE_TAG,
189 1785f84a 2018-12-23 stsp int type = 0;
190 c7b17232 2022-01-28 stsp size_t size = 0;
194 1785f84a 2018-12-23 stsp *obj = NULL;
196 c7b17232 2022-01-28 stsp end = memchr(buf, '\0', len);
197 c7b17232 2022-01-28 stsp if (end == NULL)
198 9ef4ac16 2019-04-13 stsp return got_error(GOT_ERR_BAD_OBJ_HDR);
200 ff2a4428 2019-03-19 stsp for (i = 0; i < nitems(obj_labels); i++) {
201 ff2a4428 2019-03-19 stsp const char *label = obj_labels[i];
202 ff2a4428 2019-03-19 stsp size_t label_len = strlen(label);
203 1785f84a 2018-12-23 stsp const char *errstr;
205 c7b17232 2022-01-28 stsp if (len <= label_len || buf + label_len >= end ||
206 c7b17232 2022-01-28 stsp strncmp(buf, label, label_len) != 0)
209 1785f84a 2018-12-23 stsp type = obj_types[i];
210 ff2a4428 2019-03-19 stsp size = strtonum(buf + label_len, 0, LONG_MAX, &errstr);
211 1785f84a 2018-12-23 stsp if (errstr != NULL)
212 1785f84a 2018-12-23 stsp return got_error(GOT_ERR_BAD_OBJ_HDR);
216 1785f84a 2018-12-23 stsp if (type == 0)
217 1785f84a 2018-12-23 stsp return got_error(GOT_ERR_BAD_OBJ_HDR);
219 1785f84a 2018-12-23 stsp *obj = calloc(1, sizeof(**obj));
220 1785f84a 2018-12-23 stsp if (*obj == NULL)
221 638f9024 2019-05-13 stsp return got_error_from_errno("calloc");
222 1785f84a 2018-12-23 stsp (*obj)->type = type;
223 c7b17232 2022-01-28 stsp (*obj)->hdrlen = end - buf + 1;
224 1785f84a 2018-12-23 stsp (*obj)->size = size;
225 1785f84a 2018-12-23 stsp return NULL;
228 1785f84a 2018-12-23 stsp const struct got_error *
229 1785f84a 2018-12-23 stsp got_object_read_header(struct got_object **obj, int fd)
231 1785f84a 2018-12-23 stsp const struct got_error *err;
232 23bc48a9 2019-03-19 stsp struct got_inflate_buf zb;
233 31e61ec1 2021-09-28 naddy uint8_t *buf;
234 1785f84a 2018-12-23 stsp const size_t zbsize = 64;
235 1785f84a 2018-12-23 stsp size_t outlen, totlen;
236 1785f84a 2018-12-23 stsp int nbuf = 1;
238 1785f84a 2018-12-23 stsp *obj = NULL;
240 1785f84a 2018-12-23 stsp buf = malloc(zbsize);
241 1785f84a 2018-12-23 stsp if (buf == NULL)
242 638f9024 2019-05-13 stsp return got_error_from_errno("malloc");
243 c7b17232 2022-01-28 stsp buf[0] = '\0';
245 1e87a3c3 2020-03-18 stsp err = got_inflate_init(&zb, buf, zbsize, NULL);
247 1785f84a 2018-12-23 stsp return err;
249 1785f84a 2018-12-23 stsp totlen = 0;
251 3ab5e33c 2020-03-18 stsp err = got_inflate_read_fd(&zb, fd, &outlen, NULL);
254 1785f84a 2018-12-23 stsp if (outlen == 0)
256 1785f84a 2018-12-23 stsp totlen += outlen;
257 dedbbd9d 2019-04-13 stsp if (memchr(zb.outbuf, '\0', outlen) == NULL) {
258 31e61ec1 2021-09-28 naddy uint8_t *newbuf;
260 1785f84a 2018-12-23 stsp newbuf = recallocarray(buf, nbuf - 1, nbuf, zbsize);
261 1785f84a 2018-12-23 stsp if (newbuf == NULL) {
262 638f9024 2019-05-13 stsp err = got_error_from_errno("recallocarray");
265 1785f84a 2018-12-23 stsp buf = newbuf;
266 1785f84a 2018-12-23 stsp zb.outbuf = newbuf + totlen;
267 1785f84a 2018-12-23 stsp zb.outlen = (nbuf * zbsize) - totlen;
269 dedbbd9d 2019-04-13 stsp } while (memchr(zb.outbuf, '\0', outlen) == NULL);
271 1785f84a 2018-12-23 stsp err = got_object_parse_header(obj, buf, totlen);
274 1785f84a 2018-12-23 stsp got_inflate_end(&zb);
275 1785f84a 2018-12-23 stsp return err;
278 13b2bc37 2022-10-23 stsp const struct got_error *
279 13b2bc37 2022-10-23 stsp got_object_read_raw(uint8_t **outbuf, off_t *size, size_t *hdrlen,
280 13b2bc37 2022-10-23 stsp size_t max_in_mem_size, int outfd, struct got_object_id *expected_id,
283 13b2bc37 2022-10-23 stsp const struct got_error *err = NULL;
284 13b2bc37 2022-10-23 stsp struct got_object *obj;
285 13b2bc37 2022-10-23 stsp struct got_inflate_checksum csum;
286 13b2bc37 2022-10-23 stsp uint8_t sha1[SHA1_DIGEST_LENGTH];
287 13b2bc37 2022-10-23 stsp SHA1_CTX sha1_ctx;
288 13b2bc37 2022-10-23 stsp size_t len, consumed;
289 13b2bc37 2022-10-23 stsp FILE *f = NULL;
291 13b2bc37 2022-10-23 stsp *outbuf = NULL;
293 13b2bc37 2022-10-23 stsp *hdrlen = 0;
295 13b2bc37 2022-10-23 stsp SHA1Init(&sha1_ctx);
296 13b2bc37 2022-10-23 stsp memset(&csum, 0, sizeof(csum));
297 13b2bc37 2022-10-23 stsp csum.output_sha1 = &sha1_ctx;
299 13b2bc37 2022-10-23 stsp if (lseek(infd, SEEK_SET, 0) == -1)
300 13b2bc37 2022-10-23 stsp return got_error_from_errno("lseek");
302 13b2bc37 2022-10-23 stsp err = got_object_read_header(&obj, infd);
304 13b2bc37 2022-10-23 stsp return err;
306 13b2bc37 2022-10-23 stsp if (lseek(infd, SEEK_SET, 0) == -1)
307 13b2bc37 2022-10-23 stsp return got_error_from_errno("lseek");
309 13b2bc37 2022-10-23 stsp if (obj->size + obj->hdrlen <= max_in_mem_size) {
310 13b2bc37 2022-10-23 stsp err = got_inflate_to_mem_fd(outbuf, &len, &consumed, &csum,
311 13b2bc37 2022-10-23 stsp obj->size + obj->hdrlen, infd);
315 13b2bc37 2022-10-23 stsp * XXX This uses an extra file descriptor for no good reason.
316 13b2bc37 2022-10-23 stsp * We should have got_inflate_fd_to_fd().
318 13b2bc37 2022-10-23 stsp fd = dup(infd);
319 13b2bc37 2022-10-23 stsp if (fd == -1)
320 13b2bc37 2022-10-23 stsp return got_error_from_errno("dup");
321 13b2bc37 2022-10-23 stsp f = fdopen(fd, "r");
322 13b2bc37 2022-10-23 stsp if (f == NULL) {
323 13b2bc37 2022-10-23 stsp err = got_error_from_errno("fdopen");
328 13b2bc37 2022-10-23 stsp err = got_inflate_to_fd(&len, f, &csum, outfd);
333 13b2bc37 2022-10-23 stsp if (len < obj->hdrlen || len != obj->hdrlen + obj->size) {
334 13b2bc37 2022-10-23 stsp err = got_error(GOT_ERR_BAD_OBJ_HDR);
338 13b2bc37 2022-10-23 stsp SHA1Final(sha1, &sha1_ctx);
339 13b2bc37 2022-10-23 stsp if (memcmp(expected_id->sha1, sha1, SHA1_DIGEST_LENGTH) != 0) {
340 13b2bc37 2022-10-23 stsp char buf[SHA1_DIGEST_STRING_LENGTH];
341 13b2bc37 2022-10-23 stsp err = got_error_fmt(GOT_ERR_OBJ_CSUM,
342 13b2bc37 2022-10-23 stsp "checksum failure for object %s",
343 13b2bc37 2022-10-23 stsp got_sha1_digest_to_str(expected_id->sha1, buf,
344 13b2bc37 2022-10-23 stsp sizeof(buf)));
348 13b2bc37 2022-10-23 stsp *size = obj->size;
349 13b2bc37 2022-10-23 stsp *hdrlen = obj->hdrlen;
351 13b2bc37 2022-10-23 stsp got_object_close(obj);
352 13b2bc37 2022-10-23 stsp if (f && fclose(f) == EOF && err == NULL)
353 13b2bc37 2022-10-23 stsp err = got_error_from_errno("fclose");
354 13b2bc37 2022-10-23 stsp return err;
357 a440fac0 2018-09-06 stsp struct got_commit_object *
358 a440fac0 2018-09-06 stsp got_object_commit_alloc_partial(void)
360 a440fac0 2018-09-06 stsp struct got_commit_object *commit;
362 a440fac0 2018-09-06 stsp commit = calloc(1, sizeof(*commit));
363 a440fac0 2018-09-06 stsp if (commit == NULL)
364 a440fac0 2018-09-06 stsp return NULL;
365 acf0c7c6 2018-11-05 stsp commit->tree_id = malloc(sizeof(*commit->tree_id));
366 a440fac0 2018-09-06 stsp if (commit->tree_id == NULL) {
367 a440fac0 2018-09-06 stsp free(commit);
368 a440fac0 2018-09-06 stsp return NULL;
371 dbdddfee 2021-06-23 naddy STAILQ_INIT(&commit->parent_ids);
373 a440fac0 2018-09-06 stsp return commit;
376 a440fac0 2018-09-06 stsp const struct got_error *
377 a440fac0 2018-09-06 stsp got_object_commit_add_parent(struct got_commit_object *commit,
378 a440fac0 2018-09-06 stsp const char *id_str)
380 a440fac0 2018-09-06 stsp const struct got_error *err = NULL;
381 a440fac0 2018-09-06 stsp struct got_object_qid *qid;
383 5df4932d 2018-11-05 stsp err = got_object_qid_alloc_partial(&qid);
385 7762fe12 2018-11-05 stsp return err;
387 d7b5a0e8 2022-04-20 stsp if (!got_parse_sha1_digest(qid->id.sha1, id_str)) {
388 a440fac0 2018-09-06 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
389 00eb6a1f 2019-07-15 stsp got_object_qid_free(qid);
390 a440fac0 2018-09-06 stsp return err;
393 dbdddfee 2021-06-23 naddy STAILQ_INSERT_TAIL(&commit->parent_ids, qid, entry);
394 a440fac0 2018-09-06 stsp commit->nparents++;
396 a440fac0 2018-09-06 stsp return NULL;
399 a440fac0 2018-09-06 stsp static const struct got_error *
400 a440fac0 2018-09-06 stsp parse_gmtoff(time_t *gmtoff, const char *tzstr)
402 a440fac0 2018-09-06 stsp int sign = 1;
403 a440fac0 2018-09-06 stsp const char *p = tzstr;
404 a440fac0 2018-09-06 stsp time_t h, m;
406 a440fac0 2018-09-06 stsp *gmtoff = 0;
408 a440fac0 2018-09-06 stsp if (*p == '-')
410 a440fac0 2018-09-06 stsp else if (*p != '+')
411 a440fac0 2018-09-06 stsp return got_error(GOT_ERR_BAD_OBJ_DATA);
413 99fd9ff4 2022-11-17 op if (!isdigit((unsigned char)*p) &&
414 99fd9ff4 2022-11-17 op !isdigit((unsigned char)*(p + 1)))
415 a440fac0 2018-09-06 stsp return got_error(GOT_ERR_BAD_OBJ_DATA);
416 a440fac0 2018-09-06 stsp h = (((*p - '0') * 10) + (*(p + 1) - '0'));
419 99fd9ff4 2022-11-17 op if (!isdigit((unsigned char)*p) &&
420 99fd9ff4 2022-11-17 op !isdigit((unsigned char)*(p + 1)))
421 a440fac0 2018-09-06 stsp return got_error(GOT_ERR_BAD_OBJ_DATA);
422 a440fac0 2018-09-06 stsp m = ((*p - '0') * 10) + (*(p + 1) - '0');
424 a440fac0 2018-09-06 stsp *gmtoff = (h * 60 * 60 + m * 60) * sign;
425 a440fac0 2018-09-06 stsp return NULL;
428 a440fac0 2018-09-06 stsp static const struct got_error *
429 ccb26ccd 2018-11-05 stsp parse_commit_time(time_t *time, time_t *gmtoff, char *committer)
431 a440fac0 2018-09-06 stsp const struct got_error *err = NULL;
432 a440fac0 2018-09-06 stsp const char *errstr;
433 a440fac0 2018-09-06 stsp char *space, *tzstr;
435 a440fac0 2018-09-06 stsp /* Parse and strip off trailing timezone indicator string. */
436 a440fac0 2018-09-06 stsp space = strrchr(committer, ' ');
437 a440fac0 2018-09-06 stsp if (space == NULL)
438 a440fac0 2018-09-06 stsp return got_error(GOT_ERR_BAD_OBJ_DATA);
439 a440fac0 2018-09-06 stsp tzstr = strdup(space + 1);
440 a440fac0 2018-09-06 stsp if (tzstr == NULL)
441 638f9024 2019-05-13 stsp return got_error_from_errno("strdup");
442 ccb26ccd 2018-11-05 stsp err = parse_gmtoff(gmtoff, tzstr);
443 a440fac0 2018-09-06 stsp free(tzstr);
445 9dbd8627 2021-02-04 stsp if (err->code != GOT_ERR_BAD_OBJ_DATA)
446 9dbd8627 2021-02-04 stsp return err;
447 9dbd8627 2021-02-04 stsp /* Old versions of Git omitted the timestamp. */
449 9dbd8627 2021-02-04 stsp *gmtoff = 0;
450 9dbd8627 2021-02-04 stsp return NULL;
452 a440fac0 2018-09-06 stsp *space = '\0';
454 a440fac0 2018-09-06 stsp /* Timestamp is separated from committer name + email by space. */
455 a440fac0 2018-09-06 stsp space = strrchr(committer, ' ');
456 a440fac0 2018-09-06 stsp if (space == NULL)
457 a440fac0 2018-09-06 stsp return got_error(GOT_ERR_BAD_OBJ_DATA);
459 09867e48 2019-08-13 stsp /* Timestamp parsed here is expressed as UNIX timestamp (UTC). */
460 ccb26ccd 2018-11-05 stsp *time = strtonum(space + 1, 0, INT64_MAX, &errstr);
461 a440fac0 2018-09-06 stsp if (errstr)
462 a440fac0 2018-09-06 stsp return got_error(GOT_ERR_BAD_OBJ_DATA);
464 a440fac0 2018-09-06 stsp /* Strip off parsed time information, leaving just author and email. */
465 a440fac0 2018-09-06 stsp *space = '\0';
467 a440fac0 2018-09-06 stsp return NULL;
471 03fa71c8 2018-09-06 stsp got_object_commit_close(struct got_commit_object *commit)
473 03fa71c8 2018-09-06 stsp if (commit->refcnt > 0) {
474 03fa71c8 2018-09-06 stsp commit->refcnt--;
475 03fa71c8 2018-09-06 stsp if (commit->refcnt > 0)
479 dd88155e 2019-06-29 stsp got_object_id_queue_free(&commit->parent_ids);
480 03fa71c8 2018-09-06 stsp free(commit->tree_id);
481 03fa71c8 2018-09-06 stsp free(commit->author);
482 03fa71c8 2018-09-06 stsp free(commit->committer);
483 03fa71c8 2018-09-06 stsp free(commit->logmsg);
484 03fa71c8 2018-09-06 stsp free(commit);
487 45d799e2 2018-12-23 stsp struct got_object_id *
488 45d799e2 2018-12-23 stsp got_object_commit_get_tree_id(struct got_commit_object *commit)
490 45d799e2 2018-12-23 stsp return commit->tree_id;
494 45d799e2 2018-12-23 stsp got_object_commit_get_nparents(struct got_commit_object *commit)
496 45d799e2 2018-12-23 stsp return commit->nparents;
499 45d799e2 2018-12-23 stsp const struct got_object_id_queue *
500 45d799e2 2018-12-23 stsp got_object_commit_get_parent_ids(struct got_commit_object *commit)
502 45d799e2 2018-12-23 stsp return &commit->parent_ids;
505 45d799e2 2018-12-23 stsp const char *
506 45d799e2 2018-12-23 stsp got_object_commit_get_author(struct got_commit_object *commit)
508 45d799e2 2018-12-23 stsp return commit->author;
512 45d799e2 2018-12-23 stsp got_object_commit_get_author_time(struct got_commit_object *commit)
514 45d799e2 2018-12-23 stsp return commit->author_time;
517 45d799e2 2018-12-23 stsp time_t got_object_commit_get_author_gmtoff(struct got_commit_object *commit)
519 45d799e2 2018-12-23 stsp return commit->author_gmtoff;
522 45d799e2 2018-12-23 stsp const char *
523 45d799e2 2018-12-23 stsp got_object_commit_get_committer(struct got_commit_object *commit)
525 45d799e2 2018-12-23 stsp return commit->committer;
529 45d799e2 2018-12-23 stsp got_object_commit_get_committer_time(struct got_commit_object *commit)
531 45d799e2 2018-12-23 stsp return commit->committer_time;
535 45d799e2 2018-12-23 stsp got_object_commit_get_committer_gmtoff(struct got_commit_object *commit)
537 45d799e2 2018-12-23 stsp return commit->committer_gmtoff;
540 5943eee2 2019-08-13 stsp const struct got_error *
541 5943eee2 2019-08-13 stsp got_object_commit_get_logmsg(char **logmsg, struct got_commit_object *commit)
543 5943eee2 2019-08-13 stsp const struct got_error *err = NULL;
544 b9c41b54 2021-08-03 stsp const char *src;
546 5943eee2 2019-08-13 stsp size_t len;
548 b9c41b54 2021-08-03 stsp len = strlen(commit->logmsg);
549 b9c41b54 2021-08-03 stsp *logmsg = malloc(len + 2); /* leave room for a trailing \n and \0 */
550 b9c41b54 2021-08-03 stsp if (*logmsg == NULL)
551 b9c41b54 2021-08-03 stsp return got_error_from_errno("malloc");
554 b9c41b54 2021-08-03 stsp * Strip out unusual headers. Headers are separated from the commit
555 b9c41b54 2021-08-03 stsp * message body by a single empty line.
557 b9c41b54 2021-08-03 stsp src = commit->logmsg;
558 b9c41b54 2021-08-03 stsp dst = *logmsg;
559 b9c41b54 2021-08-03 stsp while (*src != '\0' && *src != '\n') {
560 b9c41b54 2021-08-03 stsp int copy_header = 1, eol = 0;
561 b9c41b54 2021-08-03 stsp if (strncmp(src, GOT_COMMIT_LABEL_TREE,
562 b9c41b54 2021-08-03 stsp strlen(GOT_COMMIT_LABEL_TREE)) != 0 &&
563 b9c41b54 2021-08-03 stsp strncmp(src, GOT_COMMIT_LABEL_AUTHOR,
564 b9c41b54 2021-08-03 stsp strlen(GOT_COMMIT_LABEL_AUTHOR)) != 0 &&
565 b9c41b54 2021-08-03 stsp strncmp(src, GOT_COMMIT_LABEL_PARENT,
566 b9c41b54 2021-08-03 stsp strlen(GOT_COMMIT_LABEL_PARENT)) != 0 &&
567 b9c41b54 2021-08-03 stsp strncmp(src, GOT_COMMIT_LABEL_COMMITTER,
568 b9c41b54 2021-08-03 stsp strlen(GOT_COMMIT_LABEL_COMMITTER)) != 0)
569 b9c41b54 2021-08-03 stsp copy_header = 0;
571 b9c41b54 2021-08-03 stsp while (*src != '\0' && !eol) {
572 b9c41b54 2021-08-03 stsp if (copy_header) {
573 b9c41b54 2021-08-03 stsp *dst = *src;
576 b9c41b54 2021-08-03 stsp if (*src == '\n')
581 b9c41b54 2021-08-03 stsp *dst = '\0';
583 b9c41b54 2021-08-03 stsp if (strlcat(*logmsg, src, len + 1) >= len + 1) {
584 b9c41b54 2021-08-03 stsp err = got_error(GOT_ERR_NO_SPACE);
588 5943eee2 2019-08-13 stsp /* Trim redundant trailing whitespace. */
589 5943eee2 2019-08-13 stsp len = strlen(*logmsg);
590 5943eee2 2019-08-13 stsp while (len > 1 && isspace((unsigned char)(*logmsg)[len - 2]) &&
591 5943eee2 2019-08-13 stsp isspace((unsigned char)(*logmsg)[len - 1])) {
592 5943eee2 2019-08-13 stsp (*logmsg)[len - 1] = '\0';
596 b9c41b54 2021-08-03 stsp /* Append a trailing newline if missing. */
597 b9c41b54 2021-08-03 stsp if (len > 0 && (*logmsg)[len - 1] != '\n') {
598 b9c41b54 2021-08-03 stsp (*logmsg)[len] = '\n';
599 b9c41b54 2021-08-03 stsp (*logmsg)[len + 1] = '\0';
603 5943eee2 2019-08-13 stsp free(*logmsg);
604 5943eee2 2019-08-13 stsp *logmsg = NULL;
606 5943eee2 2019-08-13 stsp return err;
609 24ea5512 2019-08-22 stsp const char *
610 24ea5512 2019-08-22 stsp got_object_commit_get_logmsg_raw(struct got_commit_object *commit)
612 24ea5512 2019-08-22 stsp return commit->logmsg;
615 a440fac0 2018-09-06 stsp const struct got_error *
616 5e0b25c4 2018-12-24 stsp got_object_parse_commit(struct got_commit_object **commit, char *buf,
617 5e0b25c4 2018-12-24 stsp size_t len)
619 a440fac0 2018-09-06 stsp const struct got_error *err = NULL;
620 a440fac0 2018-09-06 stsp char *s = buf;
621 ff2a4428 2019-03-19 stsp size_t label_len;
622 a440fac0 2018-09-06 stsp ssize_t remain = (ssize_t)len;
624 4793d91b 2019-09-22 stsp if (remain == 0)
625 4793d91b 2019-09-22 stsp return got_error(GOT_ERR_BAD_OBJ_DATA);
627 a440fac0 2018-09-06 stsp *commit = got_object_commit_alloc_partial();
628 a440fac0 2018-09-06 stsp if (*commit == NULL)
629 638f9024 2019-05-13 stsp return got_error_from_errno("got_object_commit_alloc_partial");
631 ff2a4428 2019-03-19 stsp label_len = strlen(GOT_COMMIT_LABEL_TREE);
632 ff2a4428 2019-03-19 stsp if (strncmp(s, GOT_COMMIT_LABEL_TREE, label_len) == 0) {
633 ff2a4428 2019-03-19 stsp remain -= label_len;
634 a440fac0 2018-09-06 stsp if (remain < SHA1_DIGEST_STRING_LENGTH) {
635 a440fac0 2018-09-06 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
638 ff2a4428 2019-03-19 stsp s += label_len;
639 a440fac0 2018-09-06 stsp if (!got_parse_sha1_digest((*commit)->tree_id->sha1, s)) {
640 a440fac0 2018-09-06 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
643 a440fac0 2018-09-06 stsp remain -= SHA1_DIGEST_STRING_LENGTH;
644 a440fac0 2018-09-06 stsp s += SHA1_DIGEST_STRING_LENGTH;
646 a440fac0 2018-09-06 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
650 ff2a4428 2019-03-19 stsp label_len = strlen(GOT_COMMIT_LABEL_PARENT);
651 ff2a4428 2019-03-19 stsp while (strncmp(s, GOT_COMMIT_LABEL_PARENT, label_len) == 0) {
652 ff2a4428 2019-03-19 stsp remain -= label_len;
653 a440fac0 2018-09-06 stsp if (remain < SHA1_DIGEST_STRING_LENGTH) {
654 a440fac0 2018-09-06 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
657 ff2a4428 2019-03-19 stsp s += label_len;
658 a440fac0 2018-09-06 stsp err = got_object_commit_add_parent(*commit, s);
662 a440fac0 2018-09-06 stsp remain -= SHA1_DIGEST_STRING_LENGTH;
663 a440fac0 2018-09-06 stsp s += SHA1_DIGEST_STRING_LENGTH;
666 ff2a4428 2019-03-19 stsp label_len = strlen(GOT_COMMIT_LABEL_AUTHOR);
667 ff2a4428 2019-03-19 stsp if (strncmp(s, GOT_COMMIT_LABEL_AUTHOR, label_len) == 0) {
669 a440fac0 2018-09-06 stsp size_t slen;
671 ff2a4428 2019-03-19 stsp remain -= label_len;
672 a440fac0 2018-09-06 stsp if (remain <= 0) {
673 a440fac0 2018-09-06 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
676 ff2a4428 2019-03-19 stsp s += label_len;
677 dedbbd9d 2019-04-13 stsp p = memchr(s, '\n', remain);
678 a440fac0 2018-09-06 stsp if (p == NULL) {
679 a440fac0 2018-09-06 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
683 a440fac0 2018-09-06 stsp slen = strlen(s);
684 ccb26ccd 2018-11-05 stsp err = parse_commit_time(&(*commit)->author_time,
685 ccb26ccd 2018-11-05 stsp &(*commit)->author_gmtoff, s);
688 a440fac0 2018-09-06 stsp (*commit)->author = strdup(s);
689 a440fac0 2018-09-06 stsp if ((*commit)->author == NULL) {
690 638f9024 2019-05-13 stsp err = got_error_from_errno("strdup");
693 a440fac0 2018-09-06 stsp s += slen + 1;
694 a440fac0 2018-09-06 stsp remain -= slen + 1;
697 ff2a4428 2019-03-19 stsp label_len = strlen(GOT_COMMIT_LABEL_COMMITTER);
698 ff2a4428 2019-03-19 stsp if (strncmp(s, GOT_COMMIT_LABEL_COMMITTER, label_len) == 0) {
700 a440fac0 2018-09-06 stsp size_t slen;
702 ff2a4428 2019-03-19 stsp remain -= label_len;
703 a440fac0 2018-09-06 stsp if (remain <= 0) {
704 a440fac0 2018-09-06 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
707 ff2a4428 2019-03-19 stsp s += label_len;
708 dedbbd9d 2019-04-13 stsp p = memchr(s, '\n', remain);
709 a440fac0 2018-09-06 stsp if (p == NULL) {
710 a440fac0 2018-09-06 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
714 a440fac0 2018-09-06 stsp slen = strlen(s);
715 ccb26ccd 2018-11-05 stsp err = parse_commit_time(&(*commit)->committer_time,
716 ccb26ccd 2018-11-05 stsp &(*commit)->committer_gmtoff, s);
719 a440fac0 2018-09-06 stsp (*commit)->committer = strdup(s);
720 a440fac0 2018-09-06 stsp if ((*commit)->committer == NULL) {
721 638f9024 2019-05-13 stsp err = got_error_from_errno("strdup");
724 a440fac0 2018-09-06 stsp s += slen + 1;
725 a440fac0 2018-09-06 stsp remain -= slen + 1;
728 a440fac0 2018-09-06 stsp (*commit)->logmsg = strndup(s, remain);
729 a440fac0 2018-09-06 stsp if ((*commit)->logmsg == NULL) {
730 638f9024 2019-05-13 stsp err = got_error_from_errno("strndup");
735 a440fac0 2018-09-06 stsp got_object_commit_close(*commit);
736 a440fac0 2018-09-06 stsp *commit = NULL;
738 a440fac0 2018-09-06 stsp return err;
741 13b2bc37 2022-10-23 stsp const struct got_error *
742 13b2bc37 2022-10-23 stsp got_object_read_commit(struct got_commit_object **commit, int fd,
743 13b2bc37 2022-10-23 stsp struct got_object_id *expected_id, size_t expected_size)
745 13b2bc37 2022-10-23 stsp struct got_object *obj = NULL;
746 13b2bc37 2022-10-23 stsp const struct got_error *err = NULL;
747 13b2bc37 2022-10-23 stsp size_t len;
748 13b2bc37 2022-10-23 stsp uint8_t *p;
749 13b2bc37 2022-10-23 stsp struct got_inflate_checksum csum;
750 13b2bc37 2022-10-23 stsp SHA1_CTX sha1_ctx;
751 13b2bc37 2022-10-23 stsp struct got_object_id id;
753 13b2bc37 2022-10-23 stsp SHA1Init(&sha1_ctx);
754 13b2bc37 2022-10-23 stsp memset(&csum, 0, sizeof(csum));
755 13b2bc37 2022-10-23 stsp csum.output_sha1 = &sha1_ctx;
757 13b2bc37 2022-10-23 stsp err = got_inflate_to_mem_fd(&p, &len, NULL, &csum, expected_size, fd);
759 13b2bc37 2022-10-23 stsp return err;
761 13b2bc37 2022-10-23 stsp SHA1Final(id.sha1, &sha1_ctx);
762 13b2bc37 2022-10-23 stsp if (memcmp(expected_id->sha1, id.sha1, SHA1_DIGEST_LENGTH) != 0) {
763 13b2bc37 2022-10-23 stsp char buf[SHA1_DIGEST_STRING_LENGTH];
764 13b2bc37 2022-10-23 stsp err = got_error_fmt(GOT_ERR_OBJ_CSUM,
765 13b2bc37 2022-10-23 stsp "checksum failure for object %s",
766 13b2bc37 2022-10-23 stsp got_sha1_digest_to_str(expected_id->sha1, buf,
767 13b2bc37 2022-10-23 stsp sizeof(buf)));
771 13b2bc37 2022-10-23 stsp err = got_object_parse_header(&obj, p, len);
775 13b2bc37 2022-10-23 stsp if (len < obj->hdrlen + obj->size) {
776 13b2bc37 2022-10-23 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
780 13b2bc37 2022-10-23 stsp if (obj->type != GOT_OBJ_TYPE_COMMIT) {
781 13b2bc37 2022-10-23 stsp err = got_error(GOT_ERR_OBJ_TYPE);
785 13b2bc37 2022-10-23 stsp /* Skip object header. */
786 13b2bc37 2022-10-23 stsp len -= obj->hdrlen;
787 13b2bc37 2022-10-23 stsp err = got_object_parse_commit(commit, p + obj->hdrlen, len);
791 13b2bc37 2022-10-23 stsp got_object_close(obj);
792 13b2bc37 2022-10-23 stsp return err;
796 ed175427 2019-05-09 stsp got_object_tree_close(struct got_tree_object *tree)
798 03fa71c8 2018-09-06 stsp if (tree->refcnt > 0) {
799 03fa71c8 2018-09-06 stsp tree->refcnt--;
800 03fa71c8 2018-09-06 stsp if (tree->refcnt > 0)
804 56e0773d 2019-11-28 stsp free(tree->entries);
805 03fa71c8 2018-09-06 stsp free(tree);
808 a440fac0 2018-09-06 stsp static const struct got_error *
809 9985f404 2022-05-19 stsp parse_tree_entry(struct got_parsed_tree_entry *pte, size_t *elen, char *buf,
810 a440fac0 2018-09-06 stsp size_t maxlen)
812 8914529d 2019-04-13 stsp char *p, *space;
816 9ef4ac16 2019-04-13 stsp *elen = strnlen(buf, maxlen) + 1;
817 9985f404 2022-05-19 stsp if (*elen > maxlen)
818 a440fac0 2018-09-06 stsp return got_error(GOT_ERR_BAD_OBJ_DATA);
820 dedbbd9d 2019-04-13 stsp space = memchr(buf, ' ', *elen);
821 9985f404 2022-05-19 stsp if (space == NULL || space <= buf)
822 9985f404 2022-05-19 stsp return got_error(GOT_ERR_BAD_OBJ_DATA);
824 9985f404 2022-05-19 stsp pte->mode = 0;
826 8914529d 2019-04-13 stsp while (p < space) {
827 00d10bca 2023-01-19 mark if (*p < '0' || *p > '7')
828 9985f404 2022-05-19 stsp return got_error(GOT_ERR_BAD_OBJ_DATA);
829 9985f404 2022-05-19 stsp pte->mode <<= 3;
830 9985f404 2022-05-19 stsp pte->mode |= *p - '0';
834 9985f404 2022-05-19 stsp if (*elen > maxlen || maxlen - *elen < SHA1_DIGEST_LENGTH)
835 9985f404 2022-05-19 stsp return got_error(GOT_ERR_BAD_OBJ_DATA);
837 9985f404 2022-05-19 stsp pte->name = space + 1;
838 9985f404 2022-05-19 stsp pte->namelen = strlen(pte->name);
839 68bf1b1e 2018-11-07 stsp buf += *elen;
840 9985f404 2022-05-19 stsp pte->id = buf;
841 a440fac0 2018-09-06 stsp *elen += SHA1_DIGEST_LENGTH;
842 9985f404 2022-05-19 stsp return NULL;
846 9985f404 2022-05-19 stsp pte_cmp(const void *pa, const void *pb)
848 9985f404 2022-05-19 stsp const struct got_parsed_tree_entry *a = pa, *b = pb;
850 9985f404 2022-05-19 stsp return got_path_cmp(a->name, b->name, a->namelen, b->namelen);
853 a440fac0 2018-09-06 stsp const struct got_error *
854 d294b1dc 2022-10-18 stsp got_object_parse_tree(struct got_parsed_tree_entry **entries, size_t *nentries,
855 d294b1dc 2022-10-18 stsp size_t *nentries_alloc, uint8_t *buf, size_t len)
857 3022d272 2019-11-14 stsp const struct got_error *err = NULL;
858 d294b1dc 2022-10-18 stsp size_t remain = len;
859 9985f404 2022-05-19 stsp const size_t nalloc = 16;
860 9985f404 2022-05-19 stsp struct got_parsed_tree_entry *pte;
863 3022d272 2019-11-14 stsp *nentries = 0;
864 db1d3576 2019-10-04 stsp if (remain == 0)
865 db1d3576 2019-10-04 stsp return NULL; /* tree is empty */
867 a440fac0 2018-09-06 stsp while (remain > 0) {
868 a440fac0 2018-09-06 stsp size_t elen;
870 d294b1dc 2022-10-18 stsp if (*nentries >= *nentries_alloc) {
871 d294b1dc 2022-10-18 stsp pte = recallocarray(*entries, *nentries_alloc,
872 d294b1dc 2022-10-18 stsp *nentries_alloc + nalloc, sizeof(**entries));
873 9985f404 2022-05-19 stsp if (pte == NULL) {
874 9985f404 2022-05-19 stsp err = got_error_from_errno("recallocarray");
877 9985f404 2022-05-19 stsp *entries = pte;
878 d294b1dc 2022-10-18 stsp *nentries_alloc += nalloc;
881 9985f404 2022-05-19 stsp pte = &(*entries)[*nentries];
882 9985f404 2022-05-19 stsp err = parse_tree_entry(pte, &elen, buf, remain);
885 a440fac0 2018-09-06 stsp buf += elen;
886 a440fac0 2018-09-06 stsp remain -= elen;
887 3022d272 2019-11-14 stsp (*nentries)++;
890 a440fac0 2018-09-06 stsp if (remain != 0) {
891 f5d3d7af 2019-02-05 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
895 9985f404 2022-05-19 stsp if (*nentries > 1) {
896 9985f404 2022-05-19 stsp mergesort(*entries, *nentries, sizeof(**entries), pte_cmp);
898 9985f404 2022-05-19 stsp for (i = 0; i < *nentries - 1; i++) {
899 9985f404 2022-05-19 stsp struct got_parsed_tree_entry *prev = &(*entries)[i];
900 9985f404 2022-05-19 stsp pte = &(*entries)[i + 1];
901 9985f404 2022-05-19 stsp if (got_path_cmp(prev->name, pte->name,
902 9985f404 2022-05-19 stsp prev->namelen, pte->namelen) == 0) {
903 9985f404 2022-05-19 stsp err = got_error(GOT_ERR_TREE_DUP_ENTRY);
910 3022d272 2019-11-14 stsp *nentries = 0;
911 f5d3d7af 2019-02-05 stsp return err;
914 13b2bc37 2022-10-23 stsp const struct got_error *
915 13b2bc37 2022-10-23 stsp got_object_read_tree(struct got_parsed_tree_entry **entries, size_t *nentries,
916 13b2bc37 2022-10-23 stsp size_t *nentries_alloc, uint8_t **p, int fd,
917 13b2bc37 2022-10-23 stsp struct got_object_id *expected_id)
919 13b2bc37 2022-10-23 stsp const struct got_error *err = NULL;
920 13b2bc37 2022-10-23 stsp struct got_object *obj = NULL;
921 13b2bc37 2022-10-23 stsp size_t len;
922 13b2bc37 2022-10-23 stsp struct got_inflate_checksum csum;
923 13b2bc37 2022-10-23 stsp SHA1_CTX sha1_ctx;
924 13b2bc37 2022-10-23 stsp struct got_object_id id;
926 13b2bc37 2022-10-23 stsp SHA1Init(&sha1_ctx);
927 13b2bc37 2022-10-23 stsp memset(&csum, 0, sizeof(csum));
928 13b2bc37 2022-10-23 stsp csum.output_sha1 = &sha1_ctx;
930 13b2bc37 2022-10-23 stsp err = got_inflate_to_mem_fd(p, &len, NULL, &csum, 0, fd);
932 13b2bc37 2022-10-23 stsp return err;
934 13b2bc37 2022-10-23 stsp SHA1Final(id.sha1, &sha1_ctx);
935 13b2bc37 2022-10-23 stsp if (memcmp(expected_id->sha1, id.sha1, SHA1_DIGEST_LENGTH) != 0) {
936 13b2bc37 2022-10-23 stsp char buf[SHA1_DIGEST_STRING_LENGTH];
937 13b2bc37 2022-10-23 stsp err = got_error_fmt(GOT_ERR_OBJ_CSUM,
938 13b2bc37 2022-10-23 stsp "checksum failure for object %s",
939 13b2bc37 2022-10-23 stsp got_sha1_digest_to_str(expected_id->sha1, buf,
940 13b2bc37 2022-10-23 stsp sizeof(buf)));
944 13b2bc37 2022-10-23 stsp err = got_object_parse_header(&obj, *p, len);
948 13b2bc37 2022-10-23 stsp if (len < obj->hdrlen + obj->size) {
949 13b2bc37 2022-10-23 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
953 13b2bc37 2022-10-23 stsp /* Skip object header. */
954 13b2bc37 2022-10-23 stsp len -= obj->hdrlen;
955 13b2bc37 2022-10-23 stsp err = got_object_parse_tree(entries, nentries, nentries_alloc,
956 13b2bc37 2022-10-23 stsp *p + obj->hdrlen, len);
959 13b2bc37 2022-10-23 stsp got_object_close(obj);
960 13b2bc37 2022-10-23 stsp return err;
964 f4a881ce 2018-11-17 stsp got_object_tag_close(struct got_tag_object *tag)
966 ca0d469c 2019-08-13 stsp if (tag->refcnt > 0) {
967 ca0d469c 2019-08-13 stsp tag->refcnt--;
968 ca0d469c 2019-08-13 stsp if (tag->refcnt > 0)
972 f4a881ce 2018-11-17 stsp free(tag->tag);
973 f4a881ce 2018-11-17 stsp free(tag->tagger);
974 f4a881ce 2018-11-17 stsp free(tag->tagmsg);
978 ad242220 2018-09-08 stsp const struct got_error *
979 f4a881ce 2018-11-17 stsp got_object_parse_tag(struct got_tag_object **tag, uint8_t *buf, size_t len)
981 f4a881ce 2018-11-17 stsp const struct got_error *err = NULL;
982 f4a881ce 2018-11-17 stsp size_t remain = len;
983 f4a881ce 2018-11-17 stsp char *s = buf;
984 ff2a4428 2019-03-19 stsp size_t label_len;
986 4793d91b 2019-09-22 stsp if (remain == 0)
987 4793d91b 2019-09-22 stsp return got_error(GOT_ERR_BAD_OBJ_DATA);
989 f4a881ce 2018-11-17 stsp *tag = calloc(1, sizeof(**tag));
990 f4a881ce 2018-11-17 stsp if (*tag == NULL)
991 638f9024 2019-05-13 stsp return got_error_from_errno("calloc");
993 ff2a4428 2019-03-19 stsp label_len = strlen(GOT_TAG_LABEL_OBJECT);
994 ff2a4428 2019-03-19 stsp if (strncmp(s, GOT_TAG_LABEL_OBJECT, label_len) == 0) {
995 ff2a4428 2019-03-19 stsp remain -= label_len;
996 f4a881ce 2018-11-17 stsp if (remain < SHA1_DIGEST_STRING_LENGTH) {
997 f4a881ce 2018-11-17 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
1000 ff2a4428 2019-03-19 stsp s += label_len;
1001 f4a881ce 2018-11-17 stsp if (!got_parse_sha1_digest((*tag)->id.sha1, s)) {
1002 f4a881ce 2018-11-17 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
1003 f4a881ce 2018-11-17 stsp goto done;
1005 f4a881ce 2018-11-17 stsp remain -= SHA1_DIGEST_STRING_LENGTH;
1006 f4a881ce 2018-11-17 stsp s += SHA1_DIGEST_STRING_LENGTH;
1008 f4a881ce 2018-11-17 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
1009 f4a881ce 2018-11-17 stsp goto done;
1012 f4a881ce 2018-11-17 stsp if (remain <= 0) {
1013 f4a881ce 2018-11-17 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
1014 f4a881ce 2018-11-17 stsp goto done;
1017 ff2a4428 2019-03-19 stsp label_len = strlen(GOT_TAG_LABEL_TYPE);
1018 ff2a4428 2019-03-19 stsp if (strncmp(s, GOT_TAG_LABEL_TYPE, label_len) == 0) {
1019 ff2a4428 2019-03-19 stsp remain -= label_len;
1020 f4a881ce 2018-11-17 stsp if (remain <= 0) {
1021 f4a881ce 2018-11-17 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
1022 f4a881ce 2018-11-17 stsp goto done;
1024 ff2a4428 2019-03-19 stsp s += label_len;
1025 ff2a4428 2019-03-19 stsp if (strncmp(s, GOT_OBJ_LABEL_COMMIT,
1026 ff2a4428 2019-03-19 stsp strlen(GOT_OBJ_LABEL_COMMIT)) == 0) {
1027 f4a881ce 2018-11-17 stsp (*tag)->obj_type = GOT_OBJ_TYPE_COMMIT;
1028 ff2a4428 2019-03-19 stsp label_len = strlen(GOT_OBJ_LABEL_COMMIT);
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_TREE,
1032 ff2a4428 2019-03-19 stsp strlen(GOT_OBJ_LABEL_TREE)) == 0) {
1033 f4a881ce 2018-11-17 stsp (*tag)->obj_type = GOT_OBJ_TYPE_TREE;
1034 ff2a4428 2019-03-19 stsp label_len = strlen(GOT_OBJ_LABEL_TREE);
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_BLOB,
1038 ff2a4428 2019-03-19 stsp strlen(GOT_OBJ_LABEL_BLOB)) == 0) {
1039 f4a881ce 2018-11-17 stsp (*tag)->obj_type = GOT_OBJ_TYPE_BLOB;
1040 ff2a4428 2019-03-19 stsp label_len = strlen(GOT_OBJ_LABEL_BLOB);
1041 ff2a4428 2019-03-19 stsp s += label_len;
1042 ff2a4428 2019-03-19 stsp remain -= label_len;
1043 ff2a4428 2019-03-19 stsp } else if (strncmp(s, GOT_OBJ_LABEL_TAG,
1044 ff2a4428 2019-03-19 stsp strlen(GOT_OBJ_LABEL_TAG)) == 0) {
1045 f4a881ce 2018-11-17 stsp (*tag)->obj_type = GOT_OBJ_TYPE_TAG;
1046 ff2a4428 2019-03-19 stsp label_len = strlen(GOT_OBJ_LABEL_TAG);
1047 ff2a4428 2019-03-19 stsp s += label_len;
1048 ff2a4428 2019-03-19 stsp remain -= label_len;
1050 f4a881ce 2018-11-17 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
1051 f4a881ce 2018-11-17 stsp goto done;
1054 f4a881ce 2018-11-17 stsp if (remain <= 0 || *s != '\n') {
1055 f4a881ce 2018-11-17 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
1056 f4a881ce 2018-11-17 stsp goto done;
1060 f4a881ce 2018-11-17 stsp if (remain <= 0) {
1061 f4a881ce 2018-11-17 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
1062 f4a881ce 2018-11-17 stsp goto done;
1065 f4a881ce 2018-11-17 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
1066 f4a881ce 2018-11-17 stsp goto done;
1069 ff2a4428 2019-03-19 stsp label_len = strlen(GOT_TAG_LABEL_TAG);
1070 ff2a4428 2019-03-19 stsp if (strncmp(s, GOT_TAG_LABEL_TAG, label_len) == 0) {
1072 f4a881ce 2018-11-17 stsp size_t slen;
1073 ff2a4428 2019-03-19 stsp remain -= label_len;
1074 f4a881ce 2018-11-17 stsp if (remain <= 0) {
1075 f4a881ce 2018-11-17 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
1076 f4a881ce 2018-11-17 stsp goto done;
1078 ff2a4428 2019-03-19 stsp s += label_len;
1079 dedbbd9d 2019-04-13 stsp p = memchr(s, '\n', remain);
1080 f4a881ce 2018-11-17 stsp if (p == NULL) {
1081 f4a881ce 2018-11-17 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
1082 f4a881ce 2018-11-17 stsp goto done;
1084 f4a881ce 2018-11-17 stsp *p = '\0';
1085 f4a881ce 2018-11-17 stsp slen = strlen(s);
1086 f4a881ce 2018-11-17 stsp (*tag)->tag = strndup(s, slen);
1087 f4a881ce 2018-11-17 stsp if ((*tag)->tag == NULL) {
1088 638f9024 2019-05-13 stsp err = got_error_from_errno("strndup");
1089 f4a881ce 2018-11-17 stsp goto done;
1091 f4a881ce 2018-11-17 stsp s += slen + 1;
1092 f4a881ce 2018-11-17 stsp remain -= slen + 1;
1093 f4a881ce 2018-11-17 stsp if (remain <= 0) {
1094 f4a881ce 2018-11-17 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
1095 f4a881ce 2018-11-17 stsp goto done;
1098 f4a881ce 2018-11-17 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
1099 f4a881ce 2018-11-17 stsp goto done;
1102 ff2a4428 2019-03-19 stsp label_len = strlen(GOT_TAG_LABEL_TAGGER);
1103 ff2a4428 2019-03-19 stsp if (strncmp(s, GOT_TAG_LABEL_TAGGER, label_len) == 0) {
1105 f4a881ce 2018-11-17 stsp size_t slen;
1107 ff2a4428 2019-03-19 stsp remain -= label_len;
1108 f4a881ce 2018-11-17 stsp if (remain <= 0) {
1109 f4a881ce 2018-11-17 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
1110 f4a881ce 2018-11-17 stsp goto done;
1112 ff2a4428 2019-03-19 stsp s += label_len;
1113 dedbbd9d 2019-04-13 stsp p = memchr(s, '\n', remain);
1114 f4a881ce 2018-11-17 stsp if (p == NULL) {
1115 f4a881ce 2018-11-17 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
1116 f4a881ce 2018-11-17 stsp goto done;
1118 f4a881ce 2018-11-17 stsp *p = '\0';
1119 f4a881ce 2018-11-17 stsp slen = strlen(s);
1120 f4a881ce 2018-11-17 stsp err = parse_commit_time(&(*tag)->tagger_time,
1121 f4a881ce 2018-11-17 stsp &(*tag)->tagger_gmtoff, s);
1123 f4a881ce 2018-11-17 stsp goto done;
1124 f4a881ce 2018-11-17 stsp (*tag)->tagger = strdup(s);
1125 f4a881ce 2018-11-17 stsp if ((*tag)->tagger == NULL) {
1126 638f9024 2019-05-13 stsp err = got_error_from_errno("strdup");
1127 f4a881ce 2018-11-17 stsp goto done;
1129 f4a881ce 2018-11-17 stsp s += slen + 1;
1130 f4a881ce 2018-11-17 stsp remain -= slen + 1;
1131 5a8b373c 2020-12-18 stsp if (remain < 0) {
1132 f4a881ce 2018-11-17 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
1133 f4a881ce 2018-11-17 stsp goto done;
1136 e0e55b50 2019-02-01 stsp /* Some old tags in the Linux git repo have no tagger. */
1137 e0e55b50 2019-02-01 stsp (*tag)->tagger = strdup("");
1138 e0e55b50 2019-02-01 stsp if ((*tag)->tagger == NULL) {
1139 638f9024 2019-05-13 stsp err = got_error_from_errno("strdup");
1140 e0e55b50 2019-02-01 stsp goto done;
1144 f4a881ce 2018-11-17 stsp (*tag)->tagmsg = strndup(s, remain);
1145 f4a881ce 2018-11-17 stsp if ((*tag)->tagmsg == NULL) {
1146 638f9024 2019-05-13 stsp err = got_error_from_errno("strndup");
1147 f4a881ce 2018-11-17 stsp goto done;
1150 f4a881ce 2018-11-17 stsp if (err) {
1151 f4a881ce 2018-11-17 stsp got_object_tag_close(*tag);
1152 f4a881ce 2018-11-17 stsp *tag = NULL;
1154 13b2bc37 2022-10-23 stsp return err;
1157 13b2bc37 2022-10-23 stsp const struct got_error *
1158 758dc042 2022-11-06 stsp got_object_read_tag(struct got_tag_object **tag, int fd,
1159 13b2bc37 2022-10-23 stsp struct got_object_id *expected_id, size_t expected_size)
1161 13b2bc37 2022-10-23 stsp const struct got_error *err = NULL;
1162 13b2bc37 2022-10-23 stsp struct got_object *obj = NULL;
1163 13b2bc37 2022-10-23 stsp size_t len;
1164 13b2bc37 2022-10-23 stsp uint8_t *p;
1165 13b2bc37 2022-10-23 stsp struct got_inflate_checksum csum;
1166 13b2bc37 2022-10-23 stsp SHA1_CTX sha1_ctx;
1167 13b2bc37 2022-10-23 stsp struct got_object_id id;
1169 13b2bc37 2022-10-23 stsp SHA1Init(&sha1_ctx);
1170 13b2bc37 2022-10-23 stsp memset(&csum, 0, sizeof(csum));
1171 13b2bc37 2022-10-23 stsp csum.output_sha1 = &sha1_ctx;
1173 13b2bc37 2022-10-23 stsp err = got_inflate_to_mem_fd(&p, &len, NULL, &csum,
1174 13b2bc37 2022-10-23 stsp expected_size, fd);
1176 13b2bc37 2022-10-23 stsp return err;
1178 13b2bc37 2022-10-23 stsp SHA1Final(id.sha1, &sha1_ctx);
1179 13b2bc37 2022-10-23 stsp if (memcmp(expected_id->sha1, id.sha1, SHA1_DIGEST_LENGTH) != 0) {
1180 13b2bc37 2022-10-23 stsp char buf[SHA1_DIGEST_STRING_LENGTH];
1181 13b2bc37 2022-10-23 stsp err = got_error_fmt(GOT_ERR_OBJ_CSUM,
1182 13b2bc37 2022-10-23 stsp "checksum failure for object %s",
1183 13b2bc37 2022-10-23 stsp got_sha1_digest_to_str(expected_id->sha1, buf,
1184 13b2bc37 2022-10-23 stsp sizeof(buf)));
1185 13b2bc37 2022-10-23 stsp goto done;
1188 13b2bc37 2022-10-23 stsp err = got_object_parse_header(&obj, p, len);
1190 13b2bc37 2022-10-23 stsp goto done;
1192 13b2bc37 2022-10-23 stsp if (len < obj->hdrlen + obj->size) {
1193 13b2bc37 2022-10-23 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
1194 13b2bc37 2022-10-23 stsp goto done;
1197 13b2bc37 2022-10-23 stsp /* Skip object header. */
1198 13b2bc37 2022-10-23 stsp len -= obj->hdrlen;
1199 13b2bc37 2022-10-23 stsp err = got_object_parse_tag(tag, p + obj->hdrlen, len);
1203 13b2bc37 2022-10-23 stsp got_object_close(obj);
1204 f4a881ce 2018-11-17 stsp return err;
1207 f4a881ce 2018-11-17 stsp const struct got_error *
1208 ad242220 2018-09-08 stsp got_read_file_to_mem(uint8_t **outbuf, size_t *outlen, FILE *f)
1210 a440fac0 2018-09-06 stsp const struct got_error *err = NULL;
1211 a440fac0 2018-09-06 stsp static const size_t blocksize = 512;
1212 a440fac0 2018-09-06 stsp size_t n, total, remain;
1213 a440fac0 2018-09-06 stsp uint8_t *buf;
1215 a440fac0 2018-09-06 stsp *outbuf = NULL;
1216 a440fac0 2018-09-06 stsp *outlen = 0;
1218 a440fac0 2018-09-06 stsp buf = malloc(blocksize);
1219 a440fac0 2018-09-06 stsp if (buf == NULL)
1220 638f9024 2019-05-13 stsp return got_error_from_errno("malloc");
1222 a440fac0 2018-09-06 stsp remain = blocksize;
1223 a440fac0 2018-09-06 stsp total = 0;
1225 a440fac0 2018-09-06 stsp if (remain == 0) {
1226 a440fac0 2018-09-06 stsp uint8_t *newbuf;
1227 a440fac0 2018-09-06 stsp newbuf = reallocarray(buf, 1, total + blocksize);
1228 a440fac0 2018-09-06 stsp if (newbuf == NULL) {
1229 638f9024 2019-05-13 stsp err = got_error_from_errno("reallocarray");
1230 a440fac0 2018-09-06 stsp goto done;
1232 a440fac0 2018-09-06 stsp buf = newbuf;
1233 a440fac0 2018-09-06 stsp remain += blocksize;
1235 a440fac0 2018-09-06 stsp n = fread(buf + total, 1, remain, f);
1236 a440fac0 2018-09-06 stsp if (n == 0) {
1237 a440fac0 2018-09-06 stsp if (ferror(f)) {
1238 a440fac0 2018-09-06 stsp err = got_ferror(f, GOT_ERR_IO);
1239 a440fac0 2018-09-06 stsp goto done;
1241 a440fac0 2018-09-06 stsp break; /* EOF */
1243 a440fac0 2018-09-06 stsp remain -= n;
1244 a440fac0 2018-09-06 stsp total += n;
1248 a440fac0 2018-09-06 stsp if (err == NULL) {
1249 a440fac0 2018-09-06 stsp *outbuf = buf;
1250 a440fac0 2018-09-06 stsp *outlen = total;
1252 a440fac0 2018-09-06 stsp free(buf);
1253 ad242220 2018-09-08 stsp return err;
