2 * Copyright (c) 2018, 2019, 2020 Stefan Sperling <stsp@openbsd.org>
4 * Permission to use, copy, modify, and distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 #include "got_compat.h"
19 #include <sys/types.h>
21 #include <sys/queue.h>
23 #include <sys/socket.h>
38 #include "got_error.h"
39 #include "got_object.h"
40 #include "got_repository.h"
41 #include "got_opentemp.h"
44 #include "got_lib_hash.h"
45 #include "got_lib_delta.h"
46 #include "got_lib_inflate.h"
47 #include "got_lib_object.h"
48 #include "got_lib_object_parse.h"
49 #include "got_lib_object_qid.h"
50 #include "got_lib_object_cache.h"
51 #include "got_lib_pack.h"
52 #include "got_lib_repository.h"
55 #define nitems(_a) (sizeof(_a) / sizeof((_a)[0]))
58 const struct got_error *
59 got_object_type_label(const char **label, int obj_type)
61 const struct got_error *err = NULL;
64 case GOT_OBJ_TYPE_BLOB:
65 *label = GOT_OBJ_LABEL_BLOB;
67 case GOT_OBJ_TYPE_TREE:
68 *label = GOT_OBJ_LABEL_TREE;
70 case GOT_OBJ_TYPE_COMMIT:
71 *label = GOT_OBJ_LABEL_COMMIT;
73 case GOT_OBJ_TYPE_TAG:
74 *label = GOT_OBJ_LABEL_TAG;
78 err = got_error(GOT_ERR_OBJ_TYPE);
86 got_object_close(struct got_object *obj)
88 if (obj->refcnt > 0) {
94 if (obj->flags & GOT_OBJ_FLAG_DELTIFIED) {
95 struct got_delta *delta;
96 while (!STAILQ_EMPTY(&obj->deltas.entries)) {
97 delta = STAILQ_FIRST(&obj->deltas.entries);
98 STAILQ_REMOVE_HEAD(&obj->deltas.entries, entry);
105 const struct got_error *
106 got_object_raw_close(struct got_raw_object *obj)
108 const struct got_error *err = NULL;
110 if (obj->refcnt > 0) {
119 if (obj->f == NULL) {
121 if (munmap(obj->data, obj->hdrlen + obj->size) == -1)
122 err = got_error_from_errno("munmap");
123 if (close(obj->fd) == -1 && err == NULL)
124 err = got_error_from_errno("close");
128 if (fclose(obj->f) == EOF && err == NULL)
129 err = got_error_from_errno("fclose");
135 const struct got_error *
136 got_object_parse_header(struct got_object **obj, char *buf, size_t len)
138 const char *obj_labels[] = {
139 GOT_OBJ_LABEL_COMMIT,
144 const int obj_types[] = {
157 end = memchr(buf, '\0', len);
159 return got_error(GOT_ERR_BAD_OBJ_HDR);
161 for (i = 0; i < nitems(obj_labels); i++) {
162 const char *label = obj_labels[i];
163 size_t label_len = strlen(label);
166 if (len <= label_len || buf + label_len >= end ||
167 strncmp(buf, label, label_len) != 0)
171 size = strtonum(buf + label_len, 0, LONG_MAX, &errstr);
173 return got_error(GOT_ERR_BAD_OBJ_HDR);
178 return got_error(GOT_ERR_BAD_OBJ_HDR);
180 *obj = calloc(1, sizeof(**obj));
182 return got_error_from_errno("calloc");
184 (*obj)->hdrlen = end - buf + 1;
189 const struct got_error *
190 got_object_read_header(struct got_object **obj, int fd)
192 const struct got_error *err;
193 struct got_inflate_buf zb;
195 const size_t zbsize = 64;
196 size_t outlen, totlen;
201 buf = malloc(zbsize);
203 return got_error_from_errno("malloc");
206 err = got_inflate_init(&zb, buf, zbsize, NULL);
212 err = got_inflate_read_fd(&zb, fd, &outlen, NULL);
218 if (memchr(zb.outbuf, '\0', outlen) == NULL) {
221 newbuf = recallocarray(buf, nbuf - 1, nbuf, zbsize);
222 if (newbuf == NULL) {
223 err = got_error_from_errno("recallocarray");
227 zb.outbuf = newbuf + totlen;
228 zb.outlen = (nbuf * zbsize) - totlen;
230 } while (memchr(zb.outbuf, '\0', outlen) == NULL);
232 err = got_object_parse_header(obj, buf, totlen);
235 got_inflate_end(&zb);
239 const struct got_error *
240 got_object_read_raw(uint8_t **outbuf, off_t *size, size_t *hdrlen,
241 size_t max_in_mem_size, int outfd, struct got_object_id *expected_id,
244 const struct got_error *err = NULL;
245 struct got_object *obj;
246 struct got_inflate_checksum csum;
247 struct got_object_id id;
249 size_t len, consumed;
256 got_hash_init(&ctx, GOT_HASH_SHA1);
257 memset(&csum, 0, sizeof(csum));
258 csum.output_ctx = &ctx;
260 if (lseek(infd, SEEK_SET, 0) == -1)
261 return got_error_from_errno("lseek");
263 err = got_object_read_header(&obj, infd);
267 if (lseek(infd, SEEK_SET, 0) == -1)
268 return got_error_from_errno("lseek");
270 if (obj->size + obj->hdrlen <= max_in_mem_size) {
271 err = got_inflate_to_mem_fd(outbuf, &len, &consumed, &csum,
272 obj->size + obj->hdrlen, infd);
276 * XXX This uses an extra file descriptor for no good reason.
277 * We should have got_inflate_fd_to_fd().
281 return got_error_from_errno("dup");
284 err = got_error_from_errno("fdopen");
289 err = got_inflate_to_fd(&len, f, &csum, outfd);
294 if (len < obj->hdrlen || len != obj->hdrlen + obj->size) {
295 err = got_error(GOT_ERR_BAD_OBJ_HDR);
299 got_hash_final_object_id(&ctx, &id);
300 if (got_object_id_cmp(expected_id, &id) != 0) {
301 err = got_error_checksum(expected_id);
306 *hdrlen = obj->hdrlen;
308 got_object_close(obj);
309 if (f && fclose(f) == EOF && err == NULL)
310 err = got_error_from_errno("fclose");
314 struct got_commit_object *
315 got_object_commit_alloc_partial(void)
317 struct got_commit_object *commit;
319 commit = calloc(1, sizeof(*commit));
322 commit->tree_id = malloc(sizeof(*commit->tree_id));
323 if (commit->tree_id == NULL) {
328 STAILQ_INIT(&commit->parent_ids);
333 const struct got_error *
334 got_object_commit_add_parent(struct got_commit_object *commit,
337 const struct got_error *err = NULL;
338 struct got_object_qid *qid;
340 err = got_object_qid_alloc_partial(&qid);
344 if (!got_parse_object_id(&qid->id, id_str, GOT_HASH_SHA1)) {
345 err = got_error(GOT_ERR_BAD_OBJ_DATA);
346 got_object_qid_free(qid);
350 STAILQ_INSERT_TAIL(&commit->parent_ids, qid, entry);
356 static const struct got_error *
357 parse_gmtoff(time_t *gmtoff, const char *tzstr)
360 const char *p = tzstr;
368 return got_error(GOT_ERR_BAD_OBJ_DATA);
370 if (!isdigit((unsigned char)*p) &&
371 !isdigit((unsigned char)*(p + 1)))
372 return got_error(GOT_ERR_BAD_OBJ_DATA);
373 h = (((*p - '0') * 10) + (*(p + 1) - '0'));
376 if (!isdigit((unsigned char)*p) &&
377 !isdigit((unsigned char)*(p + 1)))
378 return got_error(GOT_ERR_BAD_OBJ_DATA);
379 m = ((*p - '0') * 10) + (*(p + 1) - '0');
381 *gmtoff = (h * 60 * 60 + m * 60) * sign;
385 static const struct got_error *
386 parse_commit_time(time_t *time, time_t *gmtoff, char *committer)
388 const struct got_error *err = NULL;
392 /* Parse and strip off trailing timezone indicator string. */
393 space = strrchr(committer, ' ');
395 return got_error(GOT_ERR_BAD_OBJ_DATA);
396 tzstr = strdup(space + 1);
398 return got_error_from_errno("strdup");
399 err = parse_gmtoff(gmtoff, tzstr);
402 if (err->code != GOT_ERR_BAD_OBJ_DATA)
404 /* Old versions of Git omitted the timestamp. */
411 /* Timestamp is separated from committer name + email by space. */
412 space = strrchr(committer, ' ');
414 return got_error(GOT_ERR_BAD_OBJ_DATA);
416 /* Timestamp parsed here is expressed as UNIX timestamp (UTC). */
417 *time = strtonum(space + 1, 0, INT64_MAX, &errstr);
419 return got_error(GOT_ERR_BAD_OBJ_DATA);
421 /* Strip off parsed time information, leaving just author and email. */
428 got_object_commit_close(struct got_commit_object *commit)
430 if (commit->refcnt > 0) {
432 if (commit->refcnt > 0)
436 got_object_id_queue_free(&commit->parent_ids);
437 free(commit->tree_id);
438 free(commit->author);
439 free(commit->committer);
440 free(commit->logmsg);
444 struct got_object_id *
445 got_object_commit_get_tree_id(struct got_commit_object *commit)
447 return commit->tree_id;
451 got_object_commit_get_nparents(struct got_commit_object *commit)
453 return commit->nparents;
456 const struct got_object_id_queue *
457 got_object_commit_get_parent_ids(struct got_commit_object *commit)
459 return &commit->parent_ids;
463 got_object_commit_get_author(struct got_commit_object *commit)
465 return commit->author;
469 got_object_commit_get_author_time(struct got_commit_object *commit)
471 return commit->author_time;
474 time_t got_object_commit_get_author_gmtoff(struct got_commit_object *commit)
476 return commit->author_gmtoff;
480 got_object_commit_get_committer(struct got_commit_object *commit)
482 return commit->committer;
486 got_object_commit_get_committer_time(struct got_commit_object *commit)
488 return commit->committer_time;
492 got_object_commit_get_committer_gmtoff(struct got_commit_object *commit)
494 return commit->committer_gmtoff;
497 const struct got_error *
498 got_object_commit_get_logmsg(char **logmsg, struct got_commit_object *commit)
500 const struct got_error *err = NULL;
505 len = strlen(commit->logmsg);
506 *logmsg = malloc(len + 2); /* leave room for a trailing \n and \0 */
508 return got_error_from_errno("malloc");
511 * Strip out unusual headers. Headers are separated from the commit
512 * message body by a single empty line.
514 src = commit->logmsg;
516 while (*src != '\0' && *src != '\n') {
517 int copy_header = 1, eol = 0;
518 if (strncmp(src, GOT_COMMIT_LABEL_TREE,
519 strlen(GOT_COMMIT_LABEL_TREE)) != 0 &&
520 strncmp(src, GOT_COMMIT_LABEL_AUTHOR,
521 strlen(GOT_COMMIT_LABEL_AUTHOR)) != 0 &&
522 strncmp(src, GOT_COMMIT_LABEL_PARENT,
523 strlen(GOT_COMMIT_LABEL_PARENT)) != 0 &&
524 strncmp(src, GOT_COMMIT_LABEL_COMMITTER,
525 strlen(GOT_COMMIT_LABEL_COMMITTER)) != 0)
528 while (*src != '\0' && !eol) {
540 if (strlcat(*logmsg, src, len + 1) >= len + 1) {
541 err = got_error(GOT_ERR_NO_SPACE);
545 /* Trim redundant trailing whitespace. */
546 len = strlen(*logmsg);
547 while (len > 1 && isspace((unsigned char)(*logmsg)[len - 2]) &&
548 isspace((unsigned char)(*logmsg)[len - 1])) {
549 (*logmsg)[len - 1] = '\0';
553 /* Append a trailing newline if missing. */
554 if (len > 0 && (*logmsg)[len - 1] != '\n') {
555 (*logmsg)[len] = '\n';
556 (*logmsg)[len + 1] = '\0';
567 got_object_commit_get_logmsg_raw(struct got_commit_object *commit)
569 return commit->logmsg;
572 const struct got_error *
573 got_object_parse_commit(struct got_commit_object **commit, char *buf,
576 const struct got_error *err = NULL;
577 enum got_hash_algorithm algo = GOT_HASH_SHA1;
580 ssize_t remain = (ssize_t)len;
583 return got_error(GOT_ERR_BAD_OBJ_DATA);
585 *commit = got_object_commit_alloc_partial();
587 return got_error_from_errno("got_object_commit_alloc_partial");
589 label_len = strlen(GOT_COMMIT_LABEL_TREE);
590 if (strncmp(s, GOT_COMMIT_LABEL_TREE, label_len) == 0) {
592 if (remain < SHA1_DIGEST_STRING_LENGTH) {
593 err = got_error(GOT_ERR_BAD_OBJ_DATA);
597 if (!got_parse_object_id((*commit)->tree_id, s, algo)) {
598 err = got_error(GOT_ERR_BAD_OBJ_DATA);
601 remain -= SHA1_DIGEST_STRING_LENGTH;
602 s += SHA1_DIGEST_STRING_LENGTH;
604 err = got_error(GOT_ERR_BAD_OBJ_DATA);
608 label_len = strlen(GOT_COMMIT_LABEL_PARENT);
609 while (strncmp(s, GOT_COMMIT_LABEL_PARENT, label_len) == 0) {
611 if (remain < SHA1_DIGEST_STRING_LENGTH) {
612 err = got_error(GOT_ERR_BAD_OBJ_DATA);
616 err = got_object_commit_add_parent(*commit, s);
620 remain -= SHA1_DIGEST_STRING_LENGTH;
621 s += SHA1_DIGEST_STRING_LENGTH;
624 label_len = strlen(GOT_COMMIT_LABEL_AUTHOR);
625 if (strncmp(s, GOT_COMMIT_LABEL_AUTHOR, label_len) == 0) {
631 err = got_error(GOT_ERR_BAD_OBJ_DATA);
635 p = memchr(s, '\n', remain);
637 err = got_error(GOT_ERR_BAD_OBJ_DATA);
642 err = parse_commit_time(&(*commit)->author_time,
643 &(*commit)->author_gmtoff, s);
646 (*commit)->author = strdup(s);
647 if ((*commit)->author == NULL) {
648 err = got_error_from_errno("strdup");
655 label_len = strlen(GOT_COMMIT_LABEL_COMMITTER);
656 if (strncmp(s, GOT_COMMIT_LABEL_COMMITTER, label_len) == 0) {
662 err = got_error(GOT_ERR_BAD_OBJ_DATA);
666 p = memchr(s, '\n', remain);
668 err = got_error(GOT_ERR_BAD_OBJ_DATA);
673 err = parse_commit_time(&(*commit)->committer_time,
674 &(*commit)->committer_gmtoff, s);
677 (*commit)->committer = strdup(s);
678 if ((*commit)->committer == NULL) {
679 err = got_error_from_errno("strdup");
686 (*commit)->logmsg = strndup(s, remain);
687 if ((*commit)->logmsg == NULL) {
688 err = got_error_from_errno("strndup");
693 got_object_commit_close(*commit);
699 const struct got_error *
700 got_object_read_commit(struct got_commit_object **commit, int fd,
701 struct got_object_id *expected_id, size_t expected_size)
703 struct got_object *obj = NULL;
704 const struct got_error *err = NULL;
707 struct got_inflate_checksum csum;
709 struct got_object_id id;
711 got_hash_init(&ctx, GOT_HASH_SHA1);
712 memset(&csum, 0, sizeof(csum));
713 csum.output_ctx = &ctx;
715 err = got_inflate_to_mem_fd(&p, &len, NULL, &csum, expected_size, fd);
719 got_hash_final_object_id(&ctx, &id);
720 if (got_object_id_cmp(expected_id, &id) != 0) {
721 err = got_error_checksum(expected_id);
725 err = got_object_parse_header(&obj, p, len);
729 if (len < obj->hdrlen + obj->size) {
730 err = got_error(GOT_ERR_BAD_OBJ_DATA);
734 if (obj->type != GOT_OBJ_TYPE_COMMIT) {
735 err = got_error(GOT_ERR_OBJ_TYPE);
739 /* Skip object header. */
741 err = got_object_parse_commit(commit, p + obj->hdrlen, len);
745 got_object_close(obj);
750 got_object_tree_close(struct got_tree_object *tree)
752 if (tree->refcnt > 0) {
754 if (tree->refcnt > 0)
762 static const struct got_error *
763 parse_tree_entry(struct got_parsed_tree_entry *pte, size_t *elen, char *buf,
770 *elen = strnlen(buf, maxlen) + 1;
772 return got_error(GOT_ERR_BAD_OBJ_DATA);
774 space = memchr(buf, ' ', *elen);
775 if (space == NULL || space <= buf)
776 return got_error(GOT_ERR_BAD_OBJ_DATA);
781 if (*p < '0' || *p > '7')
782 return got_error(GOT_ERR_BAD_OBJ_DATA);
784 pte->mode |= *p - '0';
788 if (*elen > maxlen || maxlen - *elen < SHA1_DIGEST_LENGTH)
789 return got_error(GOT_ERR_BAD_OBJ_DATA);
791 pte->name = space + 1;
792 pte->namelen = strlen(pte->name);
795 *elen += SHA1_DIGEST_LENGTH;
800 pte_cmp(const void *pa, const void *pb)
802 const struct got_parsed_tree_entry *a = pa, *b = pb;
804 return got_path_cmp(a->name, b->name, a->namelen, b->namelen);
807 const struct got_error *
808 got_object_parse_tree(struct got_parsed_tree_entry **entries, size_t *nentries,
809 size_t *nentries_alloc, uint8_t *buf, size_t len)
811 const struct got_error *err = NULL;
813 const size_t nalloc = 16;
814 struct got_parsed_tree_entry *pte;
819 return NULL; /* tree is empty */
824 if (*nentries >= *nentries_alloc) {
825 pte = recallocarray(*entries, *nentries_alloc,
826 *nentries_alloc + nalloc, sizeof(**entries));
828 err = got_error_from_errno("recallocarray");
832 *nentries_alloc += nalloc;
835 pte = &(*entries)[*nentries];
836 err = parse_tree_entry(pte, &elen, buf, remain);
845 err = got_error(GOT_ERR_BAD_OBJ_DATA);
850 mergesort(*entries, *nentries, sizeof(**entries), pte_cmp);
852 for (i = 0; i < *nentries - 1; i++) {
853 struct got_parsed_tree_entry *prev = &(*entries)[i];
854 pte = &(*entries)[i + 1];
855 if (got_path_cmp(prev->name, pte->name,
856 prev->namelen, pte->namelen) == 0) {
857 err = got_error(GOT_ERR_TREE_DUP_ENTRY);
868 const struct got_error *
869 got_object_read_tree(struct got_parsed_tree_entry **entries, size_t *nentries,
870 size_t *nentries_alloc, uint8_t **p, int fd,
871 struct got_object_id *expected_id)
873 const struct got_error *err = NULL;
874 struct got_object *obj = NULL;
876 struct got_inflate_checksum csum;
878 struct got_object_id id;
880 got_hash_init(&ctx, GOT_HASH_SHA1);
881 memset(&csum, 0, sizeof(csum));
882 csum.output_ctx = &ctx;
884 err = got_inflate_to_mem_fd(p, &len, NULL, &csum, 0, fd);
888 got_hash_final_object_id(&ctx, &id);
889 if (got_object_id_cmp(expected_id, &id) != 0) {
890 err = got_error_checksum(expected_id);
894 err = got_object_parse_header(&obj, *p, len);
898 if (len < obj->hdrlen + obj->size) {
899 err = got_error(GOT_ERR_BAD_OBJ_DATA);
903 /* Skip object header. */
905 err = got_object_parse_tree(entries, nentries, nentries_alloc,
906 *p + obj->hdrlen, len);
909 got_object_close(obj);
914 got_object_tag_close(struct got_tag_object *tag)
916 if (tag->refcnt > 0) {
928 const struct got_error *
929 got_object_parse_tag(struct got_tag_object **tag, uint8_t *buf, size_t len)
931 const struct got_error *err = NULL;
932 enum got_hash_algorithm algo = GOT_HASH_SHA1;
938 return got_error(GOT_ERR_BAD_OBJ_DATA);
940 *tag = calloc(1, sizeof(**tag));
942 return got_error_from_errno("calloc");
944 label_len = strlen(GOT_TAG_LABEL_OBJECT);
945 if (strncmp(s, GOT_TAG_LABEL_OBJECT, label_len) == 0) {
947 if (remain < SHA1_DIGEST_STRING_LENGTH) {
948 err = got_error(GOT_ERR_BAD_OBJ_DATA);
952 if (!got_parse_object_id(&(*tag)->id, s, algo)) {
953 err = got_error(GOT_ERR_BAD_OBJ_DATA);
956 remain -= SHA1_DIGEST_STRING_LENGTH;
957 s += SHA1_DIGEST_STRING_LENGTH;
959 err = got_error(GOT_ERR_BAD_OBJ_DATA);
964 err = got_error(GOT_ERR_BAD_OBJ_DATA);
968 label_len = strlen(GOT_TAG_LABEL_TYPE);
969 if (strncmp(s, GOT_TAG_LABEL_TYPE, label_len) == 0) {
972 err = got_error(GOT_ERR_BAD_OBJ_DATA);
976 if (strncmp(s, GOT_OBJ_LABEL_COMMIT,
977 strlen(GOT_OBJ_LABEL_COMMIT)) == 0) {
978 (*tag)->obj_type = GOT_OBJ_TYPE_COMMIT;
979 label_len = strlen(GOT_OBJ_LABEL_COMMIT);
982 } else if (strncmp(s, GOT_OBJ_LABEL_TREE,
983 strlen(GOT_OBJ_LABEL_TREE)) == 0) {
984 (*tag)->obj_type = GOT_OBJ_TYPE_TREE;
985 label_len = strlen(GOT_OBJ_LABEL_TREE);
988 } else if (strncmp(s, GOT_OBJ_LABEL_BLOB,
989 strlen(GOT_OBJ_LABEL_BLOB)) == 0) {
990 (*tag)->obj_type = GOT_OBJ_TYPE_BLOB;
991 label_len = strlen(GOT_OBJ_LABEL_BLOB);
994 } else if (strncmp(s, GOT_OBJ_LABEL_TAG,
995 strlen(GOT_OBJ_LABEL_TAG)) == 0) {
996 (*tag)->obj_type = GOT_OBJ_TYPE_TAG;
997 label_len = strlen(GOT_OBJ_LABEL_TAG);
1001 err = got_error(GOT_ERR_BAD_OBJ_DATA);
1005 if (remain <= 0 || *s != '\n') {
1006 err = got_error(GOT_ERR_BAD_OBJ_DATA);
1012 err = got_error(GOT_ERR_BAD_OBJ_DATA);
1016 err = got_error(GOT_ERR_BAD_OBJ_DATA);
1020 label_len = strlen(GOT_TAG_LABEL_TAG);
1021 if (strncmp(s, GOT_TAG_LABEL_TAG, label_len) == 0) {
1024 remain -= label_len;
1026 err = got_error(GOT_ERR_BAD_OBJ_DATA);
1030 p = memchr(s, '\n', remain);
1032 err = got_error(GOT_ERR_BAD_OBJ_DATA);
1037 (*tag)->tag = strndup(s, slen);
1038 if ((*tag)->tag == NULL) {
1039 err = got_error_from_errno("strndup");
1045 err = got_error(GOT_ERR_BAD_OBJ_DATA);
1049 err = got_error(GOT_ERR_BAD_OBJ_DATA);
1053 label_len = strlen(GOT_TAG_LABEL_TAGGER);
1054 if (strncmp(s, GOT_TAG_LABEL_TAGGER, label_len) == 0) {
1058 remain -= label_len;
1060 err = got_error(GOT_ERR_BAD_OBJ_DATA);
1064 p = memchr(s, '\n', remain);
1066 err = got_error(GOT_ERR_BAD_OBJ_DATA);
1071 err = parse_commit_time(&(*tag)->tagger_time,
1072 &(*tag)->tagger_gmtoff, s);
1075 (*tag)->tagger = strdup(s);
1076 if ((*tag)->tagger == NULL) {
1077 err = got_error_from_errno("strdup");
1083 err = got_error(GOT_ERR_BAD_OBJ_DATA);
1087 /* Some old tags in the Linux git repo have no tagger. */
1088 (*tag)->tagger = strdup("");
1089 if ((*tag)->tagger == NULL) {
1090 err = got_error_from_errno("strdup");
1095 (*tag)->tagmsg = strndup(s, remain);
1096 if ((*tag)->tagmsg == NULL) {
1097 err = got_error_from_errno("strndup");
1102 got_object_tag_close(*tag);
1108 const struct got_error *
1109 got_object_read_tag(struct got_tag_object **tag, int fd,
1110 struct got_object_id *expected_id, size_t expected_size)
1112 const struct got_error *err = NULL;
1113 struct got_object *obj = NULL;
1116 struct got_inflate_checksum csum;
1117 struct got_hash ctx;
1118 struct got_object_id id;
1120 got_hash_init(&ctx, GOT_HASH_SHA1);
1121 memset(&csum, 0, sizeof(csum));
1122 csum.output_ctx = &ctx;
1124 err = got_inflate_to_mem_fd(&p, &len, NULL, &csum,
1129 got_hash_final_object_id(&ctx, &id);
1130 if (got_object_id_cmp(expected_id, &id) != 0) {
1131 err = got_error_checksum(expected_id);
1135 err = got_object_parse_header(&obj, p, len);
1139 if (len < obj->hdrlen + obj->size) {
1140 err = got_error(GOT_ERR_BAD_OBJ_DATA);
1144 /* Skip object header. */
1146 err = got_object_parse_tag(tag, p + obj->hdrlen, len);
1150 got_object_close(obj);