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 8b925c6c 2022-07-16 thomas #include <sys/queue.h>
20 a440fac0 2018-09-06 stsp #include <sys/uio.h>
21 a440fac0 2018-09-06 stsp #include <sys/socket.h>
22 a440fac0 2018-09-06 stsp #include <sys/wait.h>
23 2b0ae357 2022-01-10 thomas #include <sys/mman.h>
25 a440fac0 2018-09-06 stsp #include <errno.h>
26 a440fac0 2018-09-06 stsp #include <stdio.h>
27 a440fac0 2018-09-06 stsp #include <stdlib.h>
28 a440fac0 2018-09-06 stsp #include <string.h>
29 a440fac0 2018-09-06 stsp #include <stdint.h>
30 a440fac0 2018-09-06 stsp #include <zlib.h>
31 a440fac0 2018-09-06 stsp #include <ctype.h>
32 a440fac0 2018-09-06 stsp #include <limits.h>
33 a440fac0 2018-09-06 stsp #include <time.h>
34 ad242220 2018-09-08 stsp #include <unistd.h>
36 dd038bc6 2021-09-21 thomas.ad #include "got_compat.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 a440fac0 2018-09-06 stsp #include "got_lib_sha1.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 2ff12563 2018-09-15 stsp static const size_t len = SHA1_DIGEST_STRING_LENGTH;
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 2ff12563 2018-09-15 stsp if (got_sha1_digest_to_str(id->sha1, *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 03fa71c8 2018-09-06 stsp got_object_close(struct got_object *obj)
108 03fa71c8 2018-09-06 stsp if (obj->refcnt > 0) {
109 03fa71c8 2018-09-06 stsp obj->refcnt--;
110 03fa71c8 2018-09-06 stsp if (obj->refcnt > 0)
114 03fa71c8 2018-09-06 stsp if (obj->flags & GOT_OBJ_FLAG_DELTIFIED) {
115 03fa71c8 2018-09-06 stsp struct got_delta *delta;
116 dbdddfee 2021-06-23 naddy while (!STAILQ_EMPTY(&obj->deltas.entries)) {
117 dbdddfee 2021-06-23 naddy delta = STAILQ_FIRST(&obj->deltas.entries);
118 dbdddfee 2021-06-23 naddy STAILQ_REMOVE_HEAD(&obj->deltas.entries, entry);
119 2256993b 2019-07-15 stsp free(delta);
125 8ab9215c 2021-10-15 thomas const struct got_error *
126 8ab9215c 2021-10-15 thomas got_object_raw_close(struct got_raw_object *obj)
128 8ab9215c 2021-10-15 thomas const struct got_error *err = NULL;
130 8ab9215c 2021-10-15 thomas if (obj->refcnt > 0) {
131 8ab9215c 2021-10-15 thomas obj->refcnt--;
132 8ab9215c 2021-10-15 thomas if (obj->refcnt > 0)
133 8ab9215c 2021-10-15 thomas return NULL;
136 3efd8e31 2022-10-23 thomas if (obj->close_cb)
137 3efd8e31 2022-10-23 thomas obj->close_cb(obj);
139 2b0ae357 2022-01-10 thomas if (obj->f == NULL) {
140 2b0ae357 2022-01-10 thomas if (obj->fd != -1) {
141 2b0ae357 2022-01-10 thomas if (munmap(obj->data, obj->hdrlen + obj->size) == -1)
142 2b0ae357 2022-01-10 thomas err = got_error_from_errno("munmap");
143 2b0ae357 2022-01-10 thomas if (close(obj->fd) == -1 && err == NULL)
144 2b0ae357 2022-01-10 thomas err = got_error_from_errno("close");
146 2b0ae357 2022-01-10 thomas free(obj->data);
148 2b0ae357 2022-01-10 thomas if (fclose(obj->f) == EOF && err == NULL)
149 2b0ae357 2022-01-10 thomas err = got_error_from_errno("fclose");
151 8ab9215c 2021-10-15 thomas free(obj);
152 8ab9215c 2021-10-15 thomas return err;
156 03fa71c8 2018-09-06 stsp got_object_qid_free(struct got_object_qid *qid)
162 dd88155e 2019-06-29 stsp got_object_id_queue_free(struct got_object_id_queue *ids)
164 dd88155e 2019-06-29 stsp struct got_object_qid *qid;
166 dbdddfee 2021-06-23 naddy while (!STAILQ_EMPTY(ids)) {
167 dbdddfee 2021-06-23 naddy qid = STAILQ_FIRST(ids);
168 dbdddfee 2021-06-23 naddy STAILQ_REMOVE_HEAD(ids, entry);
169 dd88155e 2019-06-29 stsp got_object_qid_free(qid);
173 1785f84a 2018-12-23 stsp const struct got_error *
174 1785f84a 2018-12-23 stsp got_object_parse_header(struct got_object **obj, char *buf, size_t len)
176 ff2a4428 2019-03-19 stsp const char *obj_labels[] = {
177 ff2a4428 2019-03-19 stsp GOT_OBJ_LABEL_COMMIT,
178 ff2a4428 2019-03-19 stsp GOT_OBJ_LABEL_TREE,
179 ff2a4428 2019-03-19 stsp GOT_OBJ_LABEL_BLOB,
180 ff2a4428 2019-03-19 stsp GOT_OBJ_LABEL_TAG,
182 1785f84a 2018-12-23 stsp const int obj_types[] = {
183 1785f84a 2018-12-23 stsp GOT_OBJ_TYPE_COMMIT,
184 1785f84a 2018-12-23 stsp GOT_OBJ_TYPE_TREE,
185 1785f84a 2018-12-23 stsp GOT_OBJ_TYPE_BLOB,
186 1785f84a 2018-12-23 stsp GOT_OBJ_TYPE_TAG,
188 1785f84a 2018-12-23 stsp int type = 0;
189 9b31ed65 2022-02-12 thomas size_t size = 0;
191 9b31ed65 2022-02-12 thomas char *end;
193 1785f84a 2018-12-23 stsp *obj = NULL;
195 9b31ed65 2022-02-12 thomas end = memchr(buf, '\0', len);
196 9b31ed65 2022-02-12 thomas if (end == NULL)
197 9ef4ac16 2019-04-13 stsp return got_error(GOT_ERR_BAD_OBJ_HDR);
199 ff2a4428 2019-03-19 stsp for (i = 0; i < nitems(obj_labels); i++) {
200 ff2a4428 2019-03-19 stsp const char *label = obj_labels[i];
201 ff2a4428 2019-03-19 stsp size_t label_len = strlen(label);
202 1785f84a 2018-12-23 stsp const char *errstr;
204 9b31ed65 2022-02-12 thomas if (len <= label_len || buf + label_len >= end ||
205 9b31ed65 2022-02-12 thomas strncmp(buf, label, label_len) != 0)
208 1785f84a 2018-12-23 stsp type = obj_types[i];
209 ff2a4428 2019-03-19 stsp size = strtonum(buf + label_len, 0, LONG_MAX, &errstr);
210 1785f84a 2018-12-23 stsp if (errstr != NULL)
211 1785f84a 2018-12-23 stsp return got_error(GOT_ERR_BAD_OBJ_HDR);
215 1785f84a 2018-12-23 stsp if (type == 0)
216 1785f84a 2018-12-23 stsp return got_error(GOT_ERR_BAD_OBJ_HDR);
218 1785f84a 2018-12-23 stsp *obj = calloc(1, sizeof(**obj));
219 1785f84a 2018-12-23 stsp if (*obj == NULL)
220 638f9024 2019-05-13 stsp return got_error_from_errno("calloc");
221 1785f84a 2018-12-23 stsp (*obj)->type = type;
222 9b31ed65 2022-02-12 thomas (*obj)->hdrlen = end - buf + 1;
223 1785f84a 2018-12-23 stsp (*obj)->size = size;
224 1785f84a 2018-12-23 stsp return NULL;
227 1785f84a 2018-12-23 stsp const struct got_error *
228 1785f84a 2018-12-23 stsp got_object_read_header(struct got_object **obj, int fd)
230 1785f84a 2018-12-23 stsp const struct got_error *err;
231 23bc48a9 2019-03-19 stsp struct got_inflate_buf zb;
232 dbaa2362 2021-09-28 thomas uint8_t *buf;
233 1785f84a 2018-12-23 stsp const size_t zbsize = 64;
234 1785f84a 2018-12-23 stsp size_t outlen, totlen;
235 1785f84a 2018-12-23 stsp int nbuf = 1;
237 1785f84a 2018-12-23 stsp *obj = NULL;
239 1785f84a 2018-12-23 stsp buf = malloc(zbsize);
240 1785f84a 2018-12-23 stsp if (buf == NULL)
241 638f9024 2019-05-13 stsp return got_error_from_errno("malloc");
242 9b31ed65 2022-02-12 thomas buf[0] = '\0';
244 1e87a3c3 2020-03-18 stsp err = got_inflate_init(&zb, buf, zbsize, NULL);
246 1785f84a 2018-12-23 stsp return err;
248 1785f84a 2018-12-23 stsp totlen = 0;
250 3ab5e33c 2020-03-18 stsp err = got_inflate_read_fd(&zb, fd, &outlen, NULL);
253 1785f84a 2018-12-23 stsp if (outlen == 0)
255 1785f84a 2018-12-23 stsp totlen += outlen;
256 dedbbd9d 2019-04-13 stsp if (memchr(zb.outbuf, '\0', outlen) == NULL) {
257 dbaa2362 2021-09-28 thomas uint8_t *newbuf;
259 1785f84a 2018-12-23 stsp newbuf = recallocarray(buf, nbuf - 1, nbuf, zbsize);
260 1785f84a 2018-12-23 stsp if (newbuf == NULL) {
261 638f9024 2019-05-13 stsp err = got_error_from_errno("recallocarray");
264 1785f84a 2018-12-23 stsp buf = newbuf;
265 1785f84a 2018-12-23 stsp zb.outbuf = newbuf + totlen;
266 1785f84a 2018-12-23 stsp zb.outlen = (nbuf * zbsize) - totlen;
268 dedbbd9d 2019-04-13 stsp } while (memchr(zb.outbuf, '\0', outlen) == NULL);
270 1785f84a 2018-12-23 stsp err = got_object_parse_header(obj, buf, totlen);
273 1785f84a 2018-12-23 stsp got_inflate_end(&zb);
274 1785f84a 2018-12-23 stsp return err;
277 3efd8e31 2022-10-23 thomas const struct got_error *
278 3efd8e31 2022-10-23 thomas got_object_read_raw(uint8_t **outbuf, off_t *size, size_t *hdrlen,
279 3efd8e31 2022-10-23 thomas size_t max_in_mem_size, int outfd, struct got_object_id *expected_id,
280 3efd8e31 2022-10-23 thomas int infd)
282 3efd8e31 2022-10-23 thomas const struct got_error *err = NULL;
283 3efd8e31 2022-10-23 thomas struct got_object *obj;
284 3efd8e31 2022-10-23 thomas struct got_inflate_checksum csum;
285 3efd8e31 2022-10-23 thomas uint8_t sha1[SHA1_DIGEST_LENGTH];
286 3efd8e31 2022-10-23 thomas SHA1_CTX sha1_ctx;
287 3efd8e31 2022-10-23 thomas size_t len, consumed;
288 3efd8e31 2022-10-23 thomas FILE *f = NULL;
290 3efd8e31 2022-10-23 thomas *outbuf = NULL;
291 3efd8e31 2022-10-23 thomas *size = 0;
292 3efd8e31 2022-10-23 thomas *hdrlen = 0;
294 3efd8e31 2022-10-23 thomas SHA1Init(&sha1_ctx);
295 3efd8e31 2022-10-23 thomas memset(&csum, 0, sizeof(csum));
296 3efd8e31 2022-10-23 thomas csum.output_sha1 = &sha1_ctx;
298 3efd8e31 2022-10-23 thomas if (lseek(infd, SEEK_SET, 0) == -1)
299 3efd8e31 2022-10-23 thomas return got_error_from_errno("lseek");
301 3efd8e31 2022-10-23 thomas err = got_object_read_header(&obj, infd);
303 3efd8e31 2022-10-23 thomas return err;
305 3efd8e31 2022-10-23 thomas if (lseek(infd, SEEK_SET, 0) == -1)
306 3efd8e31 2022-10-23 thomas return got_error_from_errno("lseek");
308 3efd8e31 2022-10-23 thomas if (obj->size + obj->hdrlen <= max_in_mem_size) {
309 3efd8e31 2022-10-23 thomas err = got_inflate_to_mem_fd(outbuf, &len, &consumed, &csum,
310 3efd8e31 2022-10-23 thomas obj->size + obj->hdrlen, infd);
314 3efd8e31 2022-10-23 thomas * XXX This uses an extra file descriptor for no good reason.
315 3efd8e31 2022-10-23 thomas * We should have got_inflate_fd_to_fd().
317 3efd8e31 2022-10-23 thomas fd = dup(infd);
318 3efd8e31 2022-10-23 thomas if (fd == -1)
319 3efd8e31 2022-10-23 thomas return got_error_from_errno("dup");
320 3efd8e31 2022-10-23 thomas f = fdopen(fd, "r");
321 3efd8e31 2022-10-23 thomas if (f == NULL) {
322 3efd8e31 2022-10-23 thomas err = got_error_from_errno("fdopen");
324 3efd8e31 2022-10-23 thomas close(fd);
325 3efd8e31 2022-10-23 thomas goto done;
327 3efd8e31 2022-10-23 thomas err = got_inflate_to_fd(&len, f, &csum, outfd);
330 3efd8e31 2022-10-23 thomas goto done;
332 3efd8e31 2022-10-23 thomas if (len < obj->hdrlen || len != obj->hdrlen + obj->size) {
333 3efd8e31 2022-10-23 thomas err = got_error(GOT_ERR_BAD_OBJ_HDR);
334 3efd8e31 2022-10-23 thomas goto done;
337 3efd8e31 2022-10-23 thomas SHA1Final(sha1, &sha1_ctx);
338 3efd8e31 2022-10-23 thomas if (memcmp(expected_id->sha1, sha1, SHA1_DIGEST_LENGTH) != 0) {
339 3efd8e31 2022-10-23 thomas char buf[SHA1_DIGEST_STRING_LENGTH];
340 3efd8e31 2022-10-23 thomas err = got_error_fmt(GOT_ERR_OBJ_CSUM,
341 3efd8e31 2022-10-23 thomas "checksum failure for object %s",
342 3efd8e31 2022-10-23 thomas got_sha1_digest_to_str(expected_id->sha1, buf,
343 3efd8e31 2022-10-23 thomas sizeof(buf)));
344 3efd8e31 2022-10-23 thomas goto done;
347 3efd8e31 2022-10-23 thomas *size = obj->size;
348 3efd8e31 2022-10-23 thomas *hdrlen = obj->hdrlen;
350 3efd8e31 2022-10-23 thomas got_object_close(obj);
351 3efd8e31 2022-10-23 thomas if (f && fclose(f) == EOF && err == NULL)
352 3efd8e31 2022-10-23 thomas err = got_error_from_errno("fclose");
353 3efd8e31 2022-10-23 thomas return err;
356 a440fac0 2018-09-06 stsp struct got_commit_object *
357 a440fac0 2018-09-06 stsp got_object_commit_alloc_partial(void)
359 a440fac0 2018-09-06 stsp struct got_commit_object *commit;
361 a440fac0 2018-09-06 stsp commit = calloc(1, sizeof(*commit));
362 a440fac0 2018-09-06 stsp if (commit == NULL)
363 a440fac0 2018-09-06 stsp return NULL;
364 acf0c7c6 2018-11-05 stsp commit->tree_id = malloc(sizeof(*commit->tree_id));
365 a440fac0 2018-09-06 stsp if (commit->tree_id == NULL) {
366 a440fac0 2018-09-06 stsp free(commit);
367 a440fac0 2018-09-06 stsp return NULL;
370 dbdddfee 2021-06-23 naddy STAILQ_INIT(&commit->parent_ids);
372 a440fac0 2018-09-06 stsp return commit;
375 a440fac0 2018-09-06 stsp const struct got_error *
376 a440fac0 2018-09-06 stsp got_object_commit_add_parent(struct got_commit_object *commit,
377 a440fac0 2018-09-06 stsp const char *id_str)
379 a440fac0 2018-09-06 stsp const struct got_error *err = NULL;
380 a440fac0 2018-09-06 stsp struct got_object_qid *qid;
382 5df4932d 2018-11-05 stsp err = got_object_qid_alloc_partial(&qid);
384 7762fe12 2018-11-05 stsp return err;
386 ec242592 2022-04-22 thomas if (!got_parse_sha1_digest(qid->id.sha1, id_str)) {
387 a440fac0 2018-09-06 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
388 00eb6a1f 2019-07-15 stsp got_object_qid_free(qid);
389 a440fac0 2018-09-06 stsp return err;
392 dbdddfee 2021-06-23 naddy STAILQ_INSERT_TAIL(&commit->parent_ids, qid, entry);
393 a440fac0 2018-09-06 stsp commit->nparents++;
395 a440fac0 2018-09-06 stsp return NULL;
398 a440fac0 2018-09-06 stsp static const struct got_error *
399 a440fac0 2018-09-06 stsp parse_gmtoff(time_t *gmtoff, const char *tzstr)
401 a440fac0 2018-09-06 stsp int sign = 1;
402 a440fac0 2018-09-06 stsp const char *p = tzstr;
403 a440fac0 2018-09-06 stsp time_t h, m;
405 a440fac0 2018-09-06 stsp *gmtoff = 0;
407 a440fac0 2018-09-06 stsp if (*p == '-')
409 a440fac0 2018-09-06 stsp else if (*p != '+')
410 a440fac0 2018-09-06 stsp return got_error(GOT_ERR_BAD_OBJ_DATA);
412 6771d425 2022-11-17 thomas if (!isdigit((unsigned char)*p) &&
413 6771d425 2022-11-17 thomas !isdigit((unsigned char)*(p + 1)))
414 a440fac0 2018-09-06 stsp return got_error(GOT_ERR_BAD_OBJ_DATA);
415 a440fac0 2018-09-06 stsp h = (((*p - '0') * 10) + (*(p + 1) - '0'));
418 6771d425 2022-11-17 thomas if (!isdigit((unsigned char)*p) &&
419 6771d425 2022-11-17 thomas !isdigit((unsigned char)*(p + 1)))
420 a440fac0 2018-09-06 stsp return got_error(GOT_ERR_BAD_OBJ_DATA);
421 a440fac0 2018-09-06 stsp m = ((*p - '0') * 10) + (*(p + 1) - '0');
423 a440fac0 2018-09-06 stsp *gmtoff = (h * 60 * 60 + m * 60) * sign;
424 a440fac0 2018-09-06 stsp return NULL;
427 a440fac0 2018-09-06 stsp static const struct got_error *
428 ccb26ccd 2018-11-05 stsp parse_commit_time(time_t *time, time_t *gmtoff, char *committer)
430 a440fac0 2018-09-06 stsp const struct got_error *err = NULL;
431 a440fac0 2018-09-06 stsp const char *errstr;
432 a440fac0 2018-09-06 stsp char *space, *tzstr;
434 a440fac0 2018-09-06 stsp /* Parse and strip off trailing timezone indicator string. */
435 a440fac0 2018-09-06 stsp space = strrchr(committer, ' ');
436 a440fac0 2018-09-06 stsp if (space == NULL)
437 a440fac0 2018-09-06 stsp return got_error(GOT_ERR_BAD_OBJ_DATA);
438 a440fac0 2018-09-06 stsp tzstr = strdup(space + 1);
439 a440fac0 2018-09-06 stsp if (tzstr == NULL)
440 638f9024 2019-05-13 stsp return got_error_from_errno("strdup");
441 ccb26ccd 2018-11-05 stsp err = parse_gmtoff(gmtoff, tzstr);
442 a440fac0 2018-09-06 stsp free(tzstr);
443 b6b86fd1 2022-08-30 thomas if (err) {
444 9dbd8627 2021-02-04 stsp if (err->code != GOT_ERR_BAD_OBJ_DATA)
445 9dbd8627 2021-02-04 stsp return err;
446 9dbd8627 2021-02-04 stsp /* Old versions of Git omitted the timestamp. */
448 9dbd8627 2021-02-04 stsp *gmtoff = 0;
449 9dbd8627 2021-02-04 stsp return NULL;
451 a440fac0 2018-09-06 stsp *space = '\0';
453 a440fac0 2018-09-06 stsp /* Timestamp is separated from committer name + email by space. */
454 a440fac0 2018-09-06 stsp space = strrchr(committer, ' ');
455 a440fac0 2018-09-06 stsp if (space == NULL)
456 a440fac0 2018-09-06 stsp return got_error(GOT_ERR_BAD_OBJ_DATA);
458 09867e48 2019-08-13 stsp /* Timestamp parsed here is expressed as UNIX timestamp (UTC). */
459 ccb26ccd 2018-11-05 stsp *time = strtonum(space + 1, 0, INT64_MAX, &errstr);
460 a440fac0 2018-09-06 stsp if (errstr)
461 a440fac0 2018-09-06 stsp return got_error(GOT_ERR_BAD_OBJ_DATA);
463 a440fac0 2018-09-06 stsp /* Strip off parsed time information, leaving just author and email. */
464 a440fac0 2018-09-06 stsp *space = '\0';
466 a440fac0 2018-09-06 stsp return NULL;
470 03fa71c8 2018-09-06 stsp got_object_commit_close(struct got_commit_object *commit)
472 03fa71c8 2018-09-06 stsp if (commit->refcnt > 0) {
473 03fa71c8 2018-09-06 stsp commit->refcnt--;
474 03fa71c8 2018-09-06 stsp if (commit->refcnt > 0)
478 dd88155e 2019-06-29 stsp got_object_id_queue_free(&commit->parent_ids);
479 03fa71c8 2018-09-06 stsp free(commit->tree_id);
480 03fa71c8 2018-09-06 stsp free(commit->author);
481 03fa71c8 2018-09-06 stsp free(commit->committer);
482 03fa71c8 2018-09-06 stsp free(commit->logmsg);
483 03fa71c8 2018-09-06 stsp free(commit);
486 45d799e2 2018-12-23 stsp struct got_object_id *
487 45d799e2 2018-12-23 stsp got_object_commit_get_tree_id(struct got_commit_object *commit)
489 45d799e2 2018-12-23 stsp return commit->tree_id;
493 45d799e2 2018-12-23 stsp got_object_commit_get_nparents(struct got_commit_object *commit)
495 45d799e2 2018-12-23 stsp return commit->nparents;
498 45d799e2 2018-12-23 stsp const struct got_object_id_queue *
499 45d799e2 2018-12-23 stsp got_object_commit_get_parent_ids(struct got_commit_object *commit)
501 45d799e2 2018-12-23 stsp return &commit->parent_ids;
504 45d799e2 2018-12-23 stsp const char *
505 45d799e2 2018-12-23 stsp got_object_commit_get_author(struct got_commit_object *commit)
507 45d799e2 2018-12-23 stsp return commit->author;
511 45d799e2 2018-12-23 stsp got_object_commit_get_author_time(struct got_commit_object *commit)
513 45d799e2 2018-12-23 stsp return commit->author_time;
516 45d799e2 2018-12-23 stsp time_t got_object_commit_get_author_gmtoff(struct got_commit_object *commit)
518 45d799e2 2018-12-23 stsp return commit->author_gmtoff;
521 45d799e2 2018-12-23 stsp const char *
522 45d799e2 2018-12-23 stsp got_object_commit_get_committer(struct got_commit_object *commit)
524 45d799e2 2018-12-23 stsp return commit->committer;
528 45d799e2 2018-12-23 stsp got_object_commit_get_committer_time(struct got_commit_object *commit)
530 45d799e2 2018-12-23 stsp return commit->committer_time;
534 45d799e2 2018-12-23 stsp got_object_commit_get_committer_gmtoff(struct got_commit_object *commit)
536 45d799e2 2018-12-23 stsp return commit->committer_gmtoff;
539 5943eee2 2019-08-13 stsp const struct got_error *
540 5943eee2 2019-08-13 stsp got_object_commit_get_logmsg(char **logmsg, struct got_commit_object *commit)
542 5943eee2 2019-08-13 stsp const struct got_error *err = NULL;
543 b9c41b54 2021-08-03 stsp const char *src;
545 5943eee2 2019-08-13 stsp size_t len;
547 b9c41b54 2021-08-03 stsp len = strlen(commit->logmsg);
548 b9c41b54 2021-08-03 stsp *logmsg = malloc(len + 2); /* leave room for a trailing \n and \0 */
549 b9c41b54 2021-08-03 stsp if (*logmsg == NULL)
550 b9c41b54 2021-08-03 stsp return got_error_from_errno("malloc");
553 b9c41b54 2021-08-03 stsp * Strip out unusual headers. Headers are separated from the commit
554 b9c41b54 2021-08-03 stsp * message body by a single empty line.
556 b9c41b54 2021-08-03 stsp src = commit->logmsg;
557 b9c41b54 2021-08-03 stsp dst = *logmsg;
558 b9c41b54 2021-08-03 stsp while (*src != '\0' && *src != '\n') {
559 b9c41b54 2021-08-03 stsp int copy_header = 1, eol = 0;
560 b9c41b54 2021-08-03 stsp if (strncmp(src, GOT_COMMIT_LABEL_TREE,
561 b9c41b54 2021-08-03 stsp strlen(GOT_COMMIT_LABEL_TREE)) != 0 &&
562 b9c41b54 2021-08-03 stsp strncmp(src, GOT_COMMIT_LABEL_AUTHOR,
563 b9c41b54 2021-08-03 stsp strlen(GOT_COMMIT_LABEL_AUTHOR)) != 0 &&
564 b9c41b54 2021-08-03 stsp strncmp(src, GOT_COMMIT_LABEL_PARENT,
565 b9c41b54 2021-08-03 stsp strlen(GOT_COMMIT_LABEL_PARENT)) != 0 &&
566 b9c41b54 2021-08-03 stsp strncmp(src, GOT_COMMIT_LABEL_COMMITTER,
567 b9c41b54 2021-08-03 stsp strlen(GOT_COMMIT_LABEL_COMMITTER)) != 0)
568 b9c41b54 2021-08-03 stsp copy_header = 0;
570 b9c41b54 2021-08-03 stsp while (*src != '\0' && !eol) {
571 b9c41b54 2021-08-03 stsp if (copy_header) {
572 b9c41b54 2021-08-03 stsp *dst = *src;
575 b9c41b54 2021-08-03 stsp if (*src == '\n')
580 b9c41b54 2021-08-03 stsp *dst = '\0';
582 b9c41b54 2021-08-03 stsp if (strlcat(*logmsg, src, len + 1) >= len + 1) {
583 b9c41b54 2021-08-03 stsp err = got_error(GOT_ERR_NO_SPACE);
587 5943eee2 2019-08-13 stsp /* Trim redundant trailing whitespace. */
588 5943eee2 2019-08-13 stsp len = strlen(*logmsg);
589 5943eee2 2019-08-13 stsp while (len > 1 && isspace((unsigned char)(*logmsg)[len - 2]) &&
590 5943eee2 2019-08-13 stsp isspace((unsigned char)(*logmsg)[len - 1])) {
591 5943eee2 2019-08-13 stsp (*logmsg)[len - 1] = '\0';
595 b9c41b54 2021-08-03 stsp /* Append a trailing newline if missing. */
596 b9c41b54 2021-08-03 stsp if (len > 0 && (*logmsg)[len - 1] != '\n') {
597 b9c41b54 2021-08-03 stsp (*logmsg)[len] = '\n';
598 b9c41b54 2021-08-03 stsp (*logmsg)[len + 1] = '\0';
602 5943eee2 2019-08-13 stsp free(*logmsg);
603 5943eee2 2019-08-13 stsp *logmsg = NULL;
605 5943eee2 2019-08-13 stsp return err;
608 24ea5512 2019-08-22 stsp const char *
609 24ea5512 2019-08-22 stsp got_object_commit_get_logmsg_raw(struct got_commit_object *commit)
611 24ea5512 2019-08-22 stsp return commit->logmsg;
614 a440fac0 2018-09-06 stsp const struct got_error *
615 5e0b25c4 2018-12-24 stsp got_object_parse_commit(struct got_commit_object **commit, char *buf,
616 5e0b25c4 2018-12-24 stsp size_t len)
618 a440fac0 2018-09-06 stsp const struct got_error *err = NULL;
619 a440fac0 2018-09-06 stsp char *s = buf;
620 ff2a4428 2019-03-19 stsp size_t label_len;
621 a440fac0 2018-09-06 stsp ssize_t remain = (ssize_t)len;
623 4793d91b 2019-09-22 stsp if (remain == 0)
624 4793d91b 2019-09-22 stsp return got_error(GOT_ERR_BAD_OBJ_DATA);
626 a440fac0 2018-09-06 stsp *commit = got_object_commit_alloc_partial();
627 a440fac0 2018-09-06 stsp if (*commit == NULL)
628 638f9024 2019-05-13 stsp return got_error_from_errno("got_object_commit_alloc_partial");
630 ff2a4428 2019-03-19 stsp label_len = strlen(GOT_COMMIT_LABEL_TREE);
631 ff2a4428 2019-03-19 stsp if (strncmp(s, GOT_COMMIT_LABEL_TREE, label_len) == 0) {
632 ff2a4428 2019-03-19 stsp remain -= label_len;
633 a440fac0 2018-09-06 stsp if (remain < SHA1_DIGEST_STRING_LENGTH) {
634 a440fac0 2018-09-06 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
637 ff2a4428 2019-03-19 stsp s += label_len;
638 a440fac0 2018-09-06 stsp if (!got_parse_sha1_digest((*commit)->tree_id->sha1, s)) {
639 a440fac0 2018-09-06 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
642 a440fac0 2018-09-06 stsp remain -= SHA1_DIGEST_STRING_LENGTH;
643 a440fac0 2018-09-06 stsp s += SHA1_DIGEST_STRING_LENGTH;
645 a440fac0 2018-09-06 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
649 ff2a4428 2019-03-19 stsp label_len = strlen(GOT_COMMIT_LABEL_PARENT);
650 ff2a4428 2019-03-19 stsp while (strncmp(s, GOT_COMMIT_LABEL_PARENT, label_len) == 0) {
651 ff2a4428 2019-03-19 stsp remain -= label_len;
652 a440fac0 2018-09-06 stsp if (remain < SHA1_DIGEST_STRING_LENGTH) {
653 a440fac0 2018-09-06 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
656 ff2a4428 2019-03-19 stsp s += label_len;
657 a440fac0 2018-09-06 stsp err = got_object_commit_add_parent(*commit, s);
661 a440fac0 2018-09-06 stsp remain -= SHA1_DIGEST_STRING_LENGTH;
662 a440fac0 2018-09-06 stsp s += SHA1_DIGEST_STRING_LENGTH;
665 ff2a4428 2019-03-19 stsp label_len = strlen(GOT_COMMIT_LABEL_AUTHOR);
666 ff2a4428 2019-03-19 stsp if (strncmp(s, GOT_COMMIT_LABEL_AUTHOR, label_len) == 0) {
668 a440fac0 2018-09-06 stsp size_t slen;
670 ff2a4428 2019-03-19 stsp remain -= label_len;
671 a440fac0 2018-09-06 stsp if (remain <= 0) {
672 a440fac0 2018-09-06 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
675 ff2a4428 2019-03-19 stsp s += label_len;
676 dedbbd9d 2019-04-13 stsp p = memchr(s, '\n', remain);
677 a440fac0 2018-09-06 stsp if (p == NULL) {
678 a440fac0 2018-09-06 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
682 a440fac0 2018-09-06 stsp slen = strlen(s);
683 ccb26ccd 2018-11-05 stsp err = parse_commit_time(&(*commit)->author_time,
684 ccb26ccd 2018-11-05 stsp &(*commit)->author_gmtoff, s);
687 a440fac0 2018-09-06 stsp (*commit)->author = strdup(s);
688 a440fac0 2018-09-06 stsp if ((*commit)->author == NULL) {
689 638f9024 2019-05-13 stsp err = got_error_from_errno("strdup");
692 a440fac0 2018-09-06 stsp s += slen + 1;
693 a440fac0 2018-09-06 stsp remain -= slen + 1;
696 ff2a4428 2019-03-19 stsp label_len = strlen(GOT_COMMIT_LABEL_COMMITTER);
697 ff2a4428 2019-03-19 stsp if (strncmp(s, GOT_COMMIT_LABEL_COMMITTER, label_len) == 0) {
699 a440fac0 2018-09-06 stsp size_t slen;
701 ff2a4428 2019-03-19 stsp remain -= label_len;
702 a440fac0 2018-09-06 stsp if (remain <= 0) {
703 a440fac0 2018-09-06 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
706 ff2a4428 2019-03-19 stsp s += label_len;
707 dedbbd9d 2019-04-13 stsp p = memchr(s, '\n', remain);
708 a440fac0 2018-09-06 stsp if (p == NULL) {
709 a440fac0 2018-09-06 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
713 a440fac0 2018-09-06 stsp slen = strlen(s);
714 ccb26ccd 2018-11-05 stsp err = parse_commit_time(&(*commit)->committer_time,
715 ccb26ccd 2018-11-05 stsp &(*commit)->committer_gmtoff, s);
718 a440fac0 2018-09-06 stsp (*commit)->committer = strdup(s);
719 a440fac0 2018-09-06 stsp if ((*commit)->committer == NULL) {
720 638f9024 2019-05-13 stsp err = got_error_from_errno("strdup");
723 a440fac0 2018-09-06 stsp s += slen + 1;
724 a440fac0 2018-09-06 stsp remain -= slen + 1;
727 a440fac0 2018-09-06 stsp (*commit)->logmsg = strndup(s, remain);
728 a440fac0 2018-09-06 stsp if ((*commit)->logmsg == NULL) {
729 638f9024 2019-05-13 stsp err = got_error_from_errno("strndup");
734 a440fac0 2018-09-06 stsp got_object_commit_close(*commit);
735 a440fac0 2018-09-06 stsp *commit = NULL;
737 a440fac0 2018-09-06 stsp return err;
740 3efd8e31 2022-10-23 thomas const struct got_error *
741 3efd8e31 2022-10-23 thomas got_object_read_commit(struct got_commit_object **commit, int fd,
742 3efd8e31 2022-10-23 thomas struct got_object_id *expected_id, size_t expected_size)
744 3efd8e31 2022-10-23 thomas struct got_object *obj = NULL;
745 3efd8e31 2022-10-23 thomas const struct got_error *err = NULL;
746 3efd8e31 2022-10-23 thomas size_t len;
747 3efd8e31 2022-10-23 thomas uint8_t *p;
748 3efd8e31 2022-10-23 thomas struct got_inflate_checksum csum;
749 3efd8e31 2022-10-23 thomas SHA1_CTX sha1_ctx;
750 3efd8e31 2022-10-23 thomas struct got_object_id id;
752 3efd8e31 2022-10-23 thomas SHA1Init(&sha1_ctx);
753 3efd8e31 2022-10-23 thomas memset(&csum, 0, sizeof(csum));
754 3efd8e31 2022-10-23 thomas csum.output_sha1 = &sha1_ctx;
756 3efd8e31 2022-10-23 thomas err = got_inflate_to_mem_fd(&p, &len, NULL, &csum, expected_size, fd);
758 3efd8e31 2022-10-23 thomas return err;
760 3efd8e31 2022-10-23 thomas SHA1Final(id.sha1, &sha1_ctx);
761 3efd8e31 2022-10-23 thomas if (memcmp(expected_id->sha1, id.sha1, SHA1_DIGEST_LENGTH) != 0) {
762 3efd8e31 2022-10-23 thomas char buf[SHA1_DIGEST_STRING_LENGTH];
763 3efd8e31 2022-10-23 thomas err = got_error_fmt(GOT_ERR_OBJ_CSUM,
764 3efd8e31 2022-10-23 thomas "checksum failure for object %s",
765 3efd8e31 2022-10-23 thomas got_sha1_digest_to_str(expected_id->sha1, buf,
766 3efd8e31 2022-10-23 thomas sizeof(buf)));
767 3efd8e31 2022-10-23 thomas goto done;
770 3efd8e31 2022-10-23 thomas err = got_object_parse_header(&obj, p, len);
772 3efd8e31 2022-10-23 thomas goto done;
774 3efd8e31 2022-10-23 thomas if (len < obj->hdrlen + obj->size) {
775 3efd8e31 2022-10-23 thomas err = got_error(GOT_ERR_BAD_OBJ_DATA);
776 3efd8e31 2022-10-23 thomas goto done;
779 3efd8e31 2022-10-23 thomas if (obj->type != GOT_OBJ_TYPE_COMMIT) {
780 3efd8e31 2022-10-23 thomas err = got_error(GOT_ERR_OBJ_TYPE);
781 3efd8e31 2022-10-23 thomas goto done;
784 3efd8e31 2022-10-23 thomas /* Skip object header. */
785 3efd8e31 2022-10-23 thomas len -= obj->hdrlen;
786 3efd8e31 2022-10-23 thomas err = got_object_parse_commit(commit, p + obj->hdrlen, len);
790 3efd8e31 2022-10-23 thomas got_object_close(obj);
791 3efd8e31 2022-10-23 thomas return err;
795 ed175427 2019-05-09 stsp got_object_tree_close(struct got_tree_object *tree)
797 03fa71c8 2018-09-06 stsp if (tree->refcnt > 0) {
798 03fa71c8 2018-09-06 stsp tree->refcnt--;
799 03fa71c8 2018-09-06 stsp if (tree->refcnt > 0)
803 56e0773d 2019-11-28 stsp free(tree->entries);
804 03fa71c8 2018-09-06 stsp free(tree);
807 a440fac0 2018-09-06 stsp static const struct got_error *
808 78e7b7b8 2022-05-19 thomas parse_tree_entry(struct got_parsed_tree_entry *pte, size_t *elen, char *buf,
809 a440fac0 2018-09-06 stsp size_t maxlen)
811 8914529d 2019-04-13 stsp char *p, *space;
815 9ef4ac16 2019-04-13 stsp *elen = strnlen(buf, maxlen) + 1;
816 78e7b7b8 2022-05-19 thomas if (*elen > maxlen)
817 a440fac0 2018-09-06 stsp return got_error(GOT_ERR_BAD_OBJ_DATA);
819 dedbbd9d 2019-04-13 stsp space = memchr(buf, ' ', *elen);
820 78e7b7b8 2022-05-19 thomas if (space == NULL || space <= buf)
821 78e7b7b8 2022-05-19 thomas return got_error(GOT_ERR_BAD_OBJ_DATA);
823 78e7b7b8 2022-05-19 thomas pte->mode = 0;
825 8914529d 2019-04-13 stsp while (p < space) {
826 78e7b7b8 2022-05-19 thomas if (*p < '0' && *p > '7')
827 78e7b7b8 2022-05-19 thomas return got_error(GOT_ERR_BAD_OBJ_DATA);
828 78e7b7b8 2022-05-19 thomas pte->mode <<= 3;
829 78e7b7b8 2022-05-19 thomas pte->mode |= *p - '0';
833 78e7b7b8 2022-05-19 thomas if (*elen > maxlen || maxlen - *elen < SHA1_DIGEST_LENGTH)
834 78e7b7b8 2022-05-19 thomas return got_error(GOT_ERR_BAD_OBJ_DATA);
836 78e7b7b8 2022-05-19 thomas pte->name = space + 1;
837 78e7b7b8 2022-05-19 thomas pte->namelen = strlen(pte->name);
838 68bf1b1e 2018-11-07 stsp buf += *elen;
839 78e7b7b8 2022-05-19 thomas pte->id = buf;
840 a440fac0 2018-09-06 stsp *elen += SHA1_DIGEST_LENGTH;
841 78e7b7b8 2022-05-19 thomas return NULL;
844 78e7b7b8 2022-05-19 thomas static int
845 78e7b7b8 2022-05-19 thomas pte_cmp(const void *pa, const void *pb)
847 78e7b7b8 2022-05-19 thomas const struct got_parsed_tree_entry *a = pa, *b = pb;
849 78e7b7b8 2022-05-19 thomas return got_path_cmp(a->name, b->name, a->namelen, b->namelen);
852 a440fac0 2018-09-06 stsp const struct got_error *
853 c77e00b3 2022-10-18 thomas got_object_parse_tree(struct got_parsed_tree_entry **entries, size_t *nentries,
854 c77e00b3 2022-10-18 thomas size_t *nentries_alloc, uint8_t *buf, size_t len)
856 3022d272 2019-11-14 stsp const struct got_error *err = NULL;
857 c77e00b3 2022-10-18 thomas size_t remain = len;
858 78e7b7b8 2022-05-19 thomas const size_t nalloc = 16;
859 78e7b7b8 2022-05-19 thomas struct got_parsed_tree_entry *pte;
862 3022d272 2019-11-14 stsp *nentries = 0;
863 db1d3576 2019-10-04 stsp if (remain == 0)
864 db1d3576 2019-10-04 stsp return NULL; /* tree is empty */
866 a440fac0 2018-09-06 stsp while (remain > 0) {
867 a440fac0 2018-09-06 stsp size_t elen;
869 c77e00b3 2022-10-18 thomas if (*nentries >= *nentries_alloc) {
870 c77e00b3 2022-10-18 thomas pte = recallocarray(*entries, *nentries_alloc,
871 c77e00b3 2022-10-18 thomas *nentries_alloc + nalloc, sizeof(**entries));
872 78e7b7b8 2022-05-19 thomas if (pte == NULL) {
873 78e7b7b8 2022-05-19 thomas err = got_error_from_errno("recallocarray");
874 78e7b7b8 2022-05-19 thomas goto done;
876 78e7b7b8 2022-05-19 thomas *entries = pte;
877 c77e00b3 2022-10-18 thomas *nentries_alloc += nalloc;
880 78e7b7b8 2022-05-19 thomas pte = &(*entries)[*nentries];
881 78e7b7b8 2022-05-19 thomas err = parse_tree_entry(pte, &elen, buf, remain);
884 a440fac0 2018-09-06 stsp buf += elen;
885 a440fac0 2018-09-06 stsp remain -= elen;
886 3022d272 2019-11-14 stsp (*nentries)++;
889 a440fac0 2018-09-06 stsp if (remain != 0) {
890 f5d3d7af 2019-02-05 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
894 78e7b7b8 2022-05-19 thomas if (*nentries > 1) {
895 78e7b7b8 2022-05-19 thomas mergesort(*entries, *nentries, sizeof(**entries), pte_cmp);
897 78e7b7b8 2022-05-19 thomas for (i = 0; i < *nentries - 1; i++) {
898 78e7b7b8 2022-05-19 thomas struct got_parsed_tree_entry *prev = &(*entries)[i];
899 78e7b7b8 2022-05-19 thomas pte = &(*entries)[i + 1];
900 78e7b7b8 2022-05-19 thomas if (got_path_cmp(prev->name, pte->name,
901 78e7b7b8 2022-05-19 thomas prev->namelen, pte->namelen) == 0) {
902 78e7b7b8 2022-05-19 thomas err = got_error(GOT_ERR_TREE_DUP_ENTRY);
909 3022d272 2019-11-14 stsp *nentries = 0;
910 f5d3d7af 2019-02-05 stsp return err;
913 3efd8e31 2022-10-23 thomas const struct got_error *
914 3efd8e31 2022-10-23 thomas got_object_read_tree(struct got_parsed_tree_entry **entries, size_t *nentries,
915 3efd8e31 2022-10-23 thomas size_t *nentries_alloc, uint8_t **p, int fd,
916 3efd8e31 2022-10-23 thomas struct got_object_id *expected_id)
918 3efd8e31 2022-10-23 thomas const struct got_error *err = NULL;
919 3efd8e31 2022-10-23 thomas struct got_object *obj = NULL;
920 3efd8e31 2022-10-23 thomas size_t len;
921 3efd8e31 2022-10-23 thomas struct got_inflate_checksum csum;
922 3efd8e31 2022-10-23 thomas SHA1_CTX sha1_ctx;
923 3efd8e31 2022-10-23 thomas struct got_object_id id;
925 3efd8e31 2022-10-23 thomas SHA1Init(&sha1_ctx);
926 3efd8e31 2022-10-23 thomas memset(&csum, 0, sizeof(csum));
927 3efd8e31 2022-10-23 thomas csum.output_sha1 = &sha1_ctx;
929 3efd8e31 2022-10-23 thomas err = got_inflate_to_mem_fd(p, &len, NULL, &csum, 0, fd);
931 3efd8e31 2022-10-23 thomas return err;
933 3efd8e31 2022-10-23 thomas SHA1Final(id.sha1, &sha1_ctx);
934 3efd8e31 2022-10-23 thomas if (memcmp(expected_id->sha1, id.sha1, SHA1_DIGEST_LENGTH) != 0) {
935 3efd8e31 2022-10-23 thomas char buf[SHA1_DIGEST_STRING_LENGTH];
936 3efd8e31 2022-10-23 thomas err = got_error_fmt(GOT_ERR_OBJ_CSUM,
937 3efd8e31 2022-10-23 thomas "checksum failure for object %s",
938 3efd8e31 2022-10-23 thomas got_sha1_digest_to_str(expected_id->sha1, buf,
939 3efd8e31 2022-10-23 thomas sizeof(buf)));
940 3efd8e31 2022-10-23 thomas goto done;
943 3efd8e31 2022-10-23 thomas err = got_object_parse_header(&obj, *p, len);
945 3efd8e31 2022-10-23 thomas goto done;
947 3efd8e31 2022-10-23 thomas if (len < obj->hdrlen + obj->size) {
948 3efd8e31 2022-10-23 thomas err = got_error(GOT_ERR_BAD_OBJ_DATA);
949 3efd8e31 2022-10-23 thomas goto done;
952 3efd8e31 2022-10-23 thomas /* Skip object header. */
953 3efd8e31 2022-10-23 thomas len -= obj->hdrlen;
954 3efd8e31 2022-10-23 thomas err = got_object_parse_tree(entries, nentries, nentries_alloc,
955 3efd8e31 2022-10-23 thomas *p + obj->hdrlen, len);
958 3efd8e31 2022-10-23 thomas got_object_close(obj);
959 3efd8e31 2022-10-23 thomas return err;
963 f4a881ce 2018-11-17 stsp got_object_tag_close(struct got_tag_object *tag)
965 ca0d469c 2019-08-13 stsp if (tag->refcnt > 0) {
966 ca0d469c 2019-08-13 stsp tag->refcnt--;
967 ca0d469c 2019-08-13 stsp if (tag->refcnt > 0)
971 f4a881ce 2018-11-17 stsp free(tag->tag);
972 f4a881ce 2018-11-17 stsp free(tag->tagger);
973 f4a881ce 2018-11-17 stsp free(tag->tagmsg);
977 ad242220 2018-09-08 stsp const struct got_error *
978 f4a881ce 2018-11-17 stsp got_object_parse_tag(struct got_tag_object **tag, uint8_t *buf, size_t len)
980 f4a881ce 2018-11-17 stsp const struct got_error *err = NULL;
981 f4a881ce 2018-11-17 stsp size_t remain = len;
982 f4a881ce 2018-11-17 stsp char *s = buf;
983 ff2a4428 2019-03-19 stsp size_t label_len;
985 4793d91b 2019-09-22 stsp if (remain == 0)
986 4793d91b 2019-09-22 stsp return got_error(GOT_ERR_BAD_OBJ_DATA);
988 f4a881ce 2018-11-17 stsp *tag = calloc(1, sizeof(**tag));
989 f4a881ce 2018-11-17 stsp if (*tag == NULL)
990 638f9024 2019-05-13 stsp return got_error_from_errno("calloc");
992 ff2a4428 2019-03-19 stsp label_len = strlen(GOT_TAG_LABEL_OBJECT);
993 ff2a4428 2019-03-19 stsp if (strncmp(s, GOT_TAG_LABEL_OBJECT, label_len) == 0) {
994 ff2a4428 2019-03-19 stsp remain -= label_len;
995 f4a881ce 2018-11-17 stsp if (remain < SHA1_DIGEST_STRING_LENGTH) {
996 f4a881ce 2018-11-17 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
999 ff2a4428 2019-03-19 stsp s += label_len;
1000 f4a881ce 2018-11-17 stsp if (!got_parse_sha1_digest((*tag)->id.sha1, s)) {
1001 f4a881ce 2018-11-17 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
1002 f4a881ce 2018-11-17 stsp goto done;
1004 f4a881ce 2018-11-17 stsp remain -= SHA1_DIGEST_STRING_LENGTH;
1005 f4a881ce 2018-11-17 stsp s += SHA1_DIGEST_STRING_LENGTH;
1007 f4a881ce 2018-11-17 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
1008 f4a881ce 2018-11-17 stsp goto done;
1011 f4a881ce 2018-11-17 stsp if (remain <= 0) {
1012 f4a881ce 2018-11-17 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
1013 f4a881ce 2018-11-17 stsp goto done;
1016 ff2a4428 2019-03-19 stsp label_len = strlen(GOT_TAG_LABEL_TYPE);
1017 ff2a4428 2019-03-19 stsp if (strncmp(s, GOT_TAG_LABEL_TYPE, label_len) == 0) {
1018 ff2a4428 2019-03-19 stsp remain -= label_len;
1019 f4a881ce 2018-11-17 stsp if (remain <= 0) {
1020 f4a881ce 2018-11-17 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
1021 f4a881ce 2018-11-17 stsp goto done;
1023 ff2a4428 2019-03-19 stsp s += label_len;
1024 ff2a4428 2019-03-19 stsp if (strncmp(s, GOT_OBJ_LABEL_COMMIT,
1025 ff2a4428 2019-03-19 stsp strlen(GOT_OBJ_LABEL_COMMIT)) == 0) {
1026 f4a881ce 2018-11-17 stsp (*tag)->obj_type = GOT_OBJ_TYPE_COMMIT;
1027 ff2a4428 2019-03-19 stsp label_len = strlen(GOT_OBJ_LABEL_COMMIT);
1028 ff2a4428 2019-03-19 stsp s += label_len;
1029 ff2a4428 2019-03-19 stsp remain -= label_len;
1030 ff2a4428 2019-03-19 stsp } else if (strncmp(s, GOT_OBJ_LABEL_TREE,
1031 ff2a4428 2019-03-19 stsp strlen(GOT_OBJ_LABEL_TREE)) == 0) {
1032 f4a881ce 2018-11-17 stsp (*tag)->obj_type = GOT_OBJ_TYPE_TREE;
1033 ff2a4428 2019-03-19 stsp label_len = strlen(GOT_OBJ_LABEL_TREE);
1034 ff2a4428 2019-03-19 stsp s += label_len;
1035 ff2a4428 2019-03-19 stsp remain -= label_len;
1036 ff2a4428 2019-03-19 stsp } else if (strncmp(s, GOT_OBJ_LABEL_BLOB,
1037 ff2a4428 2019-03-19 stsp strlen(GOT_OBJ_LABEL_BLOB)) == 0) {
1038 f4a881ce 2018-11-17 stsp (*tag)->obj_type = GOT_OBJ_TYPE_BLOB;
1039 ff2a4428 2019-03-19 stsp label_len = strlen(GOT_OBJ_LABEL_BLOB);
1040 ff2a4428 2019-03-19 stsp s += label_len;
1041 ff2a4428 2019-03-19 stsp remain -= label_len;
1042 ff2a4428 2019-03-19 stsp } else if (strncmp(s, GOT_OBJ_LABEL_TAG,
1043 ff2a4428 2019-03-19 stsp strlen(GOT_OBJ_LABEL_TAG)) == 0) {
1044 f4a881ce 2018-11-17 stsp (*tag)->obj_type = GOT_OBJ_TYPE_TAG;
1045 ff2a4428 2019-03-19 stsp label_len = strlen(GOT_OBJ_LABEL_TAG);
1046 ff2a4428 2019-03-19 stsp s += label_len;
1047 ff2a4428 2019-03-19 stsp remain -= label_len;
1049 f4a881ce 2018-11-17 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
1050 f4a881ce 2018-11-17 stsp goto done;
1053 f4a881ce 2018-11-17 stsp if (remain <= 0 || *s != '\n') {
1054 f4a881ce 2018-11-17 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
1055 f4a881ce 2018-11-17 stsp goto done;
1059 f4a881ce 2018-11-17 stsp if (remain <= 0) {
1060 f4a881ce 2018-11-17 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
1061 f4a881ce 2018-11-17 stsp goto done;
1064 f4a881ce 2018-11-17 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
1065 f4a881ce 2018-11-17 stsp goto done;
1068 ff2a4428 2019-03-19 stsp label_len = strlen(GOT_TAG_LABEL_TAG);
1069 ff2a4428 2019-03-19 stsp if (strncmp(s, GOT_TAG_LABEL_TAG, label_len) == 0) {
1071 f4a881ce 2018-11-17 stsp size_t slen;
1072 ff2a4428 2019-03-19 stsp remain -= label_len;
1073 f4a881ce 2018-11-17 stsp if (remain <= 0) {
1074 f4a881ce 2018-11-17 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
1075 f4a881ce 2018-11-17 stsp goto done;
1077 ff2a4428 2019-03-19 stsp s += label_len;
1078 dedbbd9d 2019-04-13 stsp p = memchr(s, '\n', remain);
1079 f4a881ce 2018-11-17 stsp if (p == NULL) {
1080 f4a881ce 2018-11-17 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
1081 f4a881ce 2018-11-17 stsp goto done;
1083 f4a881ce 2018-11-17 stsp *p = '\0';
1084 f4a881ce 2018-11-17 stsp slen = strlen(s);
1085 f4a881ce 2018-11-17 stsp (*tag)->tag = strndup(s, slen);
1086 f4a881ce 2018-11-17 stsp if ((*tag)->tag == NULL) {
1087 638f9024 2019-05-13 stsp err = got_error_from_errno("strndup");
1088 f4a881ce 2018-11-17 stsp goto done;
1090 f4a881ce 2018-11-17 stsp s += slen + 1;
1091 f4a881ce 2018-11-17 stsp remain -= slen + 1;
1092 f4a881ce 2018-11-17 stsp if (remain <= 0) {
1093 f4a881ce 2018-11-17 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
1094 f4a881ce 2018-11-17 stsp goto done;
1097 f4a881ce 2018-11-17 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
1098 f4a881ce 2018-11-17 stsp goto done;
1101 ff2a4428 2019-03-19 stsp label_len = strlen(GOT_TAG_LABEL_TAGGER);
1102 ff2a4428 2019-03-19 stsp if (strncmp(s, GOT_TAG_LABEL_TAGGER, label_len) == 0) {
1104 f4a881ce 2018-11-17 stsp size_t slen;
1106 ff2a4428 2019-03-19 stsp remain -= label_len;
1107 f4a881ce 2018-11-17 stsp if (remain <= 0) {
1108 f4a881ce 2018-11-17 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
1109 f4a881ce 2018-11-17 stsp goto done;
1111 ff2a4428 2019-03-19 stsp s += label_len;
1112 dedbbd9d 2019-04-13 stsp p = memchr(s, '\n', remain);
1113 f4a881ce 2018-11-17 stsp if (p == NULL) {
1114 f4a881ce 2018-11-17 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
1115 f4a881ce 2018-11-17 stsp goto done;
1117 f4a881ce 2018-11-17 stsp *p = '\0';
1118 f4a881ce 2018-11-17 stsp slen = strlen(s);
1119 f4a881ce 2018-11-17 stsp err = parse_commit_time(&(*tag)->tagger_time,
1120 f4a881ce 2018-11-17 stsp &(*tag)->tagger_gmtoff, s);
1122 f4a881ce 2018-11-17 stsp goto done;
1123 f4a881ce 2018-11-17 stsp (*tag)->tagger = strdup(s);
1124 f4a881ce 2018-11-17 stsp if ((*tag)->tagger == NULL) {
1125 638f9024 2019-05-13 stsp err = got_error_from_errno("strdup");
1126 f4a881ce 2018-11-17 stsp goto done;
1128 f4a881ce 2018-11-17 stsp s += slen + 1;
1129 f4a881ce 2018-11-17 stsp remain -= slen + 1;
1130 5a8b373c 2020-12-18 stsp if (remain < 0) {
1131 f4a881ce 2018-11-17 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
1132 f4a881ce 2018-11-17 stsp goto done;
1135 e0e55b50 2019-02-01 stsp /* Some old tags in the Linux git repo have no tagger. */
1136 e0e55b50 2019-02-01 stsp (*tag)->tagger = strdup("");
1137 e0e55b50 2019-02-01 stsp if ((*tag)->tagger == NULL) {
1138 638f9024 2019-05-13 stsp err = got_error_from_errno("strdup");
1139 e0e55b50 2019-02-01 stsp goto done;
1143 f4a881ce 2018-11-17 stsp (*tag)->tagmsg = strndup(s, remain);
1144 f4a881ce 2018-11-17 stsp if ((*tag)->tagmsg == NULL) {
1145 638f9024 2019-05-13 stsp err = got_error_from_errno("strndup");
1146 f4a881ce 2018-11-17 stsp goto done;
1149 f4a881ce 2018-11-17 stsp if (err) {
1150 f4a881ce 2018-11-17 stsp got_object_tag_close(*tag);
1151 f4a881ce 2018-11-17 stsp *tag = NULL;
1153 3efd8e31 2022-10-23 thomas return err;
1156 3efd8e31 2022-10-23 thomas const struct got_error *
1157 946e0798 2022-11-06 thomas got_object_read_tag(struct got_tag_object **tag, int fd,
1158 3efd8e31 2022-10-23 thomas struct got_object_id *expected_id, size_t expected_size)
1160 3efd8e31 2022-10-23 thomas const struct got_error *err = NULL;
1161 3efd8e31 2022-10-23 thomas struct got_object *obj = NULL;
1162 3efd8e31 2022-10-23 thomas size_t len;
1163 3efd8e31 2022-10-23 thomas uint8_t *p;
1164 3efd8e31 2022-10-23 thomas struct got_inflate_checksum csum;
1165 3efd8e31 2022-10-23 thomas SHA1_CTX sha1_ctx;
1166 3efd8e31 2022-10-23 thomas struct got_object_id id;
1168 3efd8e31 2022-10-23 thomas SHA1Init(&sha1_ctx);
1169 3efd8e31 2022-10-23 thomas memset(&csum, 0, sizeof(csum));
1170 3efd8e31 2022-10-23 thomas csum.output_sha1 = &sha1_ctx;
1172 3efd8e31 2022-10-23 thomas err = got_inflate_to_mem_fd(&p, &len, NULL, &csum,
1173 3efd8e31 2022-10-23 thomas expected_size, fd);
1174 3efd8e31 2022-10-23 thomas if (err)
1175 3efd8e31 2022-10-23 thomas return err;
1177 3efd8e31 2022-10-23 thomas SHA1Final(id.sha1, &sha1_ctx);
1178 3efd8e31 2022-10-23 thomas if (memcmp(expected_id->sha1, id.sha1, SHA1_DIGEST_LENGTH) != 0) {
1179 3efd8e31 2022-10-23 thomas char buf[SHA1_DIGEST_STRING_LENGTH];
1180 3efd8e31 2022-10-23 thomas err = got_error_fmt(GOT_ERR_OBJ_CSUM,
1181 3efd8e31 2022-10-23 thomas "checksum failure for object %s",
1182 3efd8e31 2022-10-23 thomas got_sha1_digest_to_str(expected_id->sha1, buf,
1183 3efd8e31 2022-10-23 thomas sizeof(buf)));
1184 3efd8e31 2022-10-23 thomas goto done;
1187 3efd8e31 2022-10-23 thomas err = got_object_parse_header(&obj, p, len);
1188 3efd8e31 2022-10-23 thomas if (err)
1189 3efd8e31 2022-10-23 thomas goto done;
1191 3efd8e31 2022-10-23 thomas if (len < obj->hdrlen + obj->size) {
1192 3efd8e31 2022-10-23 thomas err = got_error(GOT_ERR_BAD_OBJ_DATA);
1193 3efd8e31 2022-10-23 thomas goto done;
1196 3efd8e31 2022-10-23 thomas /* Skip object header. */
1197 3efd8e31 2022-10-23 thomas len -= obj->hdrlen;
1198 3efd8e31 2022-10-23 thomas err = got_object_parse_tag(tag, p + obj->hdrlen, len);
1200 3efd8e31 2022-10-23 thomas free(p);
1201 3efd8e31 2022-10-23 thomas if (obj)
1202 3efd8e31 2022-10-23 thomas got_object_close(obj);
1203 f4a881ce 2018-11-17 stsp return err;
1206 f4a881ce 2018-11-17 stsp const struct got_error *
1207 ad242220 2018-09-08 stsp got_read_file_to_mem(uint8_t **outbuf, size_t *outlen, FILE *f)
1209 a440fac0 2018-09-06 stsp const struct got_error *err = NULL;
1210 a440fac0 2018-09-06 stsp static const size_t blocksize = 512;
1211 a440fac0 2018-09-06 stsp size_t n, total, remain;
1212 a440fac0 2018-09-06 stsp uint8_t *buf;
1214 a440fac0 2018-09-06 stsp *outbuf = NULL;
1215 a440fac0 2018-09-06 stsp *outlen = 0;
1217 a440fac0 2018-09-06 stsp buf = malloc(blocksize);
1218 a440fac0 2018-09-06 stsp if (buf == NULL)
1219 638f9024 2019-05-13 stsp return got_error_from_errno("malloc");
1221 a440fac0 2018-09-06 stsp remain = blocksize;
1222 a440fac0 2018-09-06 stsp total = 0;
1224 a440fac0 2018-09-06 stsp if (remain == 0) {
1225 a440fac0 2018-09-06 stsp uint8_t *newbuf;
1226 a440fac0 2018-09-06 stsp newbuf = reallocarray(buf, 1, total + blocksize);
1227 a440fac0 2018-09-06 stsp if (newbuf == NULL) {
1228 638f9024 2019-05-13 stsp err = got_error_from_errno("reallocarray");
1229 a440fac0 2018-09-06 stsp goto done;
1231 a440fac0 2018-09-06 stsp buf = newbuf;
1232 a440fac0 2018-09-06 stsp remain += blocksize;
1234 a440fac0 2018-09-06 stsp n = fread(buf + total, 1, remain, f);
1235 a440fac0 2018-09-06 stsp if (n == 0) {
1236 a440fac0 2018-09-06 stsp if (ferror(f)) {
1237 a440fac0 2018-09-06 stsp err = got_ferror(f, GOT_ERR_IO);
1238 a440fac0 2018-09-06 stsp goto done;
1240 a440fac0 2018-09-06 stsp break; /* EOF */
1242 a440fac0 2018-09-06 stsp remain -= n;
1243 a440fac0 2018-09-06 stsp total += n;
1247 a440fac0 2018-09-06 stsp if (err == NULL) {
1248 a440fac0 2018-09-06 stsp *outbuf = buf;
1249 a440fac0 2018-09-06 stsp *outlen = total;
1251 a440fac0 2018-09-06 stsp free(buf);
1252 ad242220 2018-09-08 stsp return err;
