2 * Copyright (c) 2018 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 <sys/types.h>
19 #include <sys/queue.h>
21 #include <sys/socket.h>
36 #include "got_error.h"
37 #include "got_object.h"
38 #include "got_repository.h"
39 #include "got_opentemp.h"
41 #include "got_lib_sha1.h"
42 #include "got_lib_delta.h"
43 #include "got_lib_pack.h"
44 #include "got_lib_path.h"
45 #include "got_lib_zbuf.h"
46 #include "got_lib_object.h"
47 #include "got_lib_privsep.h"
50 #define MIN(_a,_b) ((_a) < (_b) ? (_a) : (_b))
54 #define nitems(_a) (sizeof(_a) / sizeof((_a)[0]))
57 #define GOT_OBJ_TAG_COMMIT "commit"
58 #define GOT_OBJ_TAG_TREE "tree"
59 #define GOT_OBJ_TAG_BLOB "blob"
61 #define GOT_COMMIT_TAG_TREE "tree "
62 #define GOT_COMMIT_TAG_PARENT "parent "
63 #define GOT_COMMIT_TAG_AUTHOR "author "
64 #define GOT_COMMIT_TAG_COMMITTER "committer "
66 const struct got_error *
67 got_object_id_str(char **outbuf, struct got_object_id *id)
69 static const size_t len = SHA1_DIGEST_STRING_LENGTH;
71 *outbuf = calloc(1, len);
73 return got_error_from_errno();
75 if (got_sha1_digest_to_str(id->sha1, *outbuf, len) == NULL) {
78 return got_error(GOT_ERR_BAD_OBJ_ID_STR);
85 got_object_id_cmp(struct got_object_id *id1, struct got_object_id *id2)
87 return memcmp(id1->sha1, id2->sha1, SHA1_DIGEST_LENGTH);
90 struct got_object_id *
91 got_object_id_dup(struct got_object_id *id1)
93 struct got_object_id *id2;
95 id2 = malloc(sizeof(*id2));
98 memcpy(id2, id1, sizeof(*id2));
102 struct got_object_id *
103 got_object_get_id(struct got_object *obj)
105 return got_object_id_dup(&obj->id);
108 const struct got_error *
109 got_object_get_id_str(char **outbuf, struct got_object *obj)
111 return got_object_id_str(outbuf, &obj->id);
115 got_object_get_type(struct got_object *obj)
118 case GOT_OBJ_TYPE_COMMIT:
119 case GOT_OBJ_TYPE_TREE:
120 case GOT_OBJ_TYPE_BLOB:
121 case GOT_OBJ_TYPE_TAG:
132 static const struct got_error *
133 parse_object_header(struct got_object **obj, char *buf, size_t len)
135 const char *obj_tags[] = {
140 const int obj_types[] = {
146 size_t size = 0, hdrlen = 0;
148 char *p = strchr(buf, '\0');
151 return got_error(GOT_ERR_BAD_OBJ_HDR);
153 hdrlen = strlen(buf) + 1 /* '\0' */;
155 for (i = 0; i < nitems(obj_tags); i++) {
156 const char *tag = obj_tags[i];
157 size_t tlen = strlen(tag);
160 if (strncmp(buf, tag, tlen) != 0)
165 return got_error(GOT_ERR_BAD_OBJ_HDR);
166 size = strtonum(buf + tlen, 0, LONG_MAX, &errstr);
168 return got_error(GOT_ERR_BAD_OBJ_HDR);
173 return got_error(GOT_ERR_BAD_OBJ_HDR);
175 *obj = calloc(1, sizeof(**obj));
177 return got_error_from_errno();
179 (*obj)->hdrlen = hdrlen;
184 static const struct got_error *
185 read_object_header(struct got_object **obj, FILE *f)
187 const struct got_error *err;
188 struct got_zstream_buf zb;
190 const size_t zbsize = 64;
191 size_t outlen, totlen;
194 buf = calloc(zbsize, sizeof(char));
196 return got_error_from_errno();
198 err = got_inflate_init(&zb, NULL, zbsize);
205 err = got_inflate_read(&zb, f, &outlen);
208 if (strchr(zb.outbuf, '\0') == NULL) {
209 buf = recallocarray(buf, 1 + i, 2 + i, zbsize);
211 err = got_error_from_errno();
215 memcpy(buf + totlen, zb.outbuf, outlen);
218 } while (strchr(zb.outbuf, '\0') == NULL);
220 err = parse_object_header(obj, buf, totlen);
222 got_inflate_end(&zb);
227 read_object_header_privsep_child(int obj_fd, int imsg_fds[2])
229 const struct got_error *err = NULL;
230 struct got_object *obj = NULL;
235 setproctitle("read object header");
237 imsg_init(&ibuf, imsg_fds[1]);
239 /* revoke access to most system calls */
240 if (pledge("stdio", NULL) == -1) {
241 err = got_error_from_errno();
245 f = fdopen(obj_fd, "rb");
247 err = got_error_from_errno();
252 err = read_object_header(&obj, f);
256 err = got_privsep_send_obj(&ibuf, obj, 0);
259 got_object_close(obj);
261 got_privsep_send_error(&ibuf, err);
271 static const struct got_error *
272 wait_for_child(pid_t pid)
276 waitpid(pid, &child_status, 0);
278 if (!WIFEXITED(child_status))
279 return got_error(GOT_ERR_PRIVSEP_DIED);
281 if (WEXITSTATUS(child_status) != 0)
282 return got_error(GOT_ERR_PRIVSEP_EXIT);
287 static const struct got_error *
288 read_object_header_privsep(struct got_object **obj, int fd)
290 struct imsgbuf parent_ibuf;
292 const struct got_error *err = NULL, *err_child = NULL;
295 if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, imsg_fds) == -1)
296 return got_error_from_errno();
300 return got_error_from_errno();
302 read_object_header_privsep_child(fd, imsg_fds);
307 imsg_init(&parent_ibuf, imsg_fds[0]);
308 err = got_privsep_recv_obj(obj, &parent_ibuf);
309 imsg_clear(&parent_ibuf);
310 err_child = wait_for_child(pid);
312 return err ? err : err_child;
315 static const struct got_error *
316 object_path(char **path, struct got_object_id *id, struct got_repository *repo)
318 const struct got_error *err = NULL;
320 char *path_objects = got_repo_get_path_objects(repo);
324 if (path_objects == NULL)
325 return got_error_from_errno();
327 err = got_object_id_str(&hex, id);
331 if (asprintf(path, "%s/%.2x/%s", path_objects,
332 id->sha1[0], hex + 2) == -1)
333 err = got_error_from_errno();
340 static const struct got_error *
341 open_loose_object(int *fd, struct got_object *obj, struct got_repository *repo)
343 const struct got_error *err = NULL;
346 err = object_path(&path, &obj->id, repo);
349 *fd = open(path, O_RDONLY | O_NOFOLLOW, GOT_DEFAULT_FILE_MODE);
351 err = got_error_from_errno();
359 const struct got_error *
360 got_object_open(struct got_object **obj, struct got_repository *repo,
361 struct got_object_id *id)
363 const struct got_error *err = NULL;
367 err = object_path(&path, id, repo);
371 fd = open(path, O_RDONLY | O_NOFOLLOW, GOT_DEFAULT_FILE_MODE);
373 if (errno != ENOENT) {
374 err = got_error_from_errno();
377 err = got_packfile_open_object(obj, id, repo);
381 err = got_error(GOT_ERR_NO_OBJ);
383 err = read_object_header_privsep(obj, fd);
386 memcpy((*obj)->id.sha1, id->sha1, SHA1_DIGEST_LENGTH);
396 const struct got_error *
397 got_object_open_by_id_str(struct got_object **obj, struct got_repository *repo,
400 struct got_object_id id;
402 if (!got_parse_sha1_digest(id.sha1, id_str))
403 return got_error(GOT_ERR_BAD_OBJ_ID_STR);
405 return got_object_open(obj, repo, &id);
409 got_object_close(struct got_object *obj)
411 if (obj->flags & GOT_OBJ_FLAG_DELTIFIED) {
412 struct got_delta *delta;
413 while (!SIMPLEQ_EMPTY(&obj->deltas.entries)) {
414 delta = SIMPLEQ_FIRST(&obj->deltas.entries);
415 SIMPLEQ_REMOVE_HEAD(&obj->deltas.entries, entry);
416 got_delta_close(delta);
419 if (obj->flags & GOT_OBJ_FLAG_PACKED)
420 free(obj->path_packfile);
424 struct got_commit_object *
425 got_object_commit_alloc_partial(void)
427 struct got_commit_object *commit;
429 commit = calloc(1, sizeof(*commit));
432 commit->tree_id = calloc(1, sizeof(*commit->tree_id));
433 if (commit->tree_id == NULL) {
438 SIMPLEQ_INIT(&commit->parent_ids);
443 const struct got_error *
444 got_object_commit_add_parent(struct got_commit_object *commit,
447 const struct got_error *err = NULL;
448 struct got_parent_id *pid;
450 pid = calloc(1, sizeof(*pid));
452 return got_error_from_errno();
454 pid->id = calloc(1, sizeof(*pid->id));
455 if (pid->id == NULL) {
456 err = got_error_from_errno();
461 if (!got_parse_sha1_digest(pid->id->sha1, id_str)) {
462 err = got_error(GOT_ERR_BAD_OBJ_DATA);
468 SIMPLEQ_INSERT_TAIL(&commit->parent_ids, pid, entry);
474 static const struct got_error *
475 parse_commit_time(time_t *time, char **tzoff, char *committer)
482 /* Parse and then strip trailing timezone indicator. */
483 space = strrchr(committer, ' ');
485 return got_error(GOT_ERR_BAD_OBJ_DATA);
486 *tzoff = strdup(space + 1);
488 return got_error_from_errno();
491 /* Timestamp is separated from committer name + email by space. */
492 space = strrchr(committer, ' ');
494 return got_error(GOT_ERR_BAD_OBJ_DATA);
496 *time = strtonum(space + 1, 0, INT64_MAX, &errstr);
498 return got_error(GOT_ERR_BAD_OBJ_DATA);
500 /* Strip off parsed time information, leaving just author and email. */
505 static const struct got_error *
506 parse_commit_object(struct got_commit_object **commit, char *buf, size_t len)
508 const struct got_error *err = NULL;
511 ssize_t remain = (ssize_t)len;
513 *commit = got_object_commit_alloc_partial();
515 return got_error_from_errno();
517 tlen = strlen(GOT_COMMIT_TAG_TREE);
518 if (strncmp(s, GOT_COMMIT_TAG_TREE, tlen) == 0) {
520 if (remain < SHA1_DIGEST_STRING_LENGTH) {
521 err = got_error(GOT_ERR_BAD_OBJ_DATA);
525 if (!got_parse_sha1_digest((*commit)->tree_id->sha1, s)) {
526 err = got_error(GOT_ERR_BAD_OBJ_DATA);
529 remain -= SHA1_DIGEST_STRING_LENGTH;
530 s += SHA1_DIGEST_STRING_LENGTH;
532 err = got_error(GOT_ERR_BAD_OBJ_DATA);
536 tlen = strlen(GOT_COMMIT_TAG_PARENT);
537 while (strncmp(s, GOT_COMMIT_TAG_PARENT, tlen) == 0) {
539 if (remain < SHA1_DIGEST_STRING_LENGTH) {
540 err = got_error(GOT_ERR_BAD_OBJ_DATA);
544 err = got_object_commit_add_parent(*commit, s);
548 remain -= SHA1_DIGEST_STRING_LENGTH;
549 s += SHA1_DIGEST_STRING_LENGTH;
552 tlen = strlen(GOT_COMMIT_TAG_AUTHOR);
553 if (strncmp(s, GOT_COMMIT_TAG_AUTHOR, tlen) == 0) {
559 err = got_error(GOT_ERR_BAD_OBJ_DATA);
565 err = got_error(GOT_ERR_BAD_OBJ_DATA);
570 err = parse_commit_time(&(*commit)->author_time,
571 &(*commit)->author_tzoff, s);
574 (*commit)->author = strdup(s);
575 if ((*commit)->author == NULL) {
576 err = got_error_from_errno();
583 tlen = strlen(GOT_COMMIT_TAG_COMMITTER);
584 if (strncmp(s, GOT_COMMIT_TAG_COMMITTER, tlen) == 0) {
590 err = got_error(GOT_ERR_BAD_OBJ_DATA);
596 err = got_error(GOT_ERR_BAD_OBJ_DATA);
601 err = parse_commit_time(&(*commit)->committer_time,
602 &(*commit)->committer_tzoff, s);
605 (*commit)->committer = strdup(s);
606 if ((*commit)->committer == NULL) {
607 err = got_error_from_errno();
614 (*commit)->logmsg = strndup(s, remain);
615 if ((*commit)->logmsg == NULL) {
616 err = got_error_from_errno();
621 got_object_commit_close(*commit);
628 tree_entry_close(struct got_tree_entry *te)
635 struct got_tree_entry *
636 got_alloc_tree_entry_partial(void)
638 struct got_tree_entry *te;
640 te = calloc(1, sizeof(*te));
644 te->id = calloc(1, sizeof(*te->id));
645 if (te->id == NULL) {
652 static const struct got_error *
653 parse_tree_entry(struct got_tree_entry **te, size_t *elen, char *buf,
656 char *p = buf, *space;
657 const struct got_error *err = NULL;
659 *te = got_alloc_tree_entry_partial();
661 return got_error_from_errno();
663 *elen = strlen(buf) + 1;
664 if (*elen > maxlen) {
667 return got_error(GOT_ERR_BAD_OBJ_DATA);
670 space = strchr(buf, ' ');
672 err = got_error(GOT_ERR_BAD_OBJ_DATA);
678 if (*p < '0' && *p > '7') {
679 err = got_error(GOT_ERR_BAD_OBJ_DATA);
683 (*te)->mode |= *p - '0';
687 (*te)->name = strdup(space + 1);
688 if (*elen > maxlen || maxlen - *elen < SHA1_DIGEST_LENGTH) {
689 err = got_error(GOT_ERR_BAD_OBJ_DATA);
692 buf += strlen(buf) + 1;
693 memcpy((*te)->id->sha1, buf, SHA1_DIGEST_LENGTH);
694 *elen += SHA1_DIGEST_LENGTH;
697 tree_entry_close(*te);
703 static const struct got_error *
704 parse_tree_object(struct got_tree_object **tree, uint8_t *buf, size_t len)
706 const struct got_error *err;
709 *tree = calloc(1, sizeof(**tree));
711 return got_error_from_errno();
713 SIMPLEQ_INIT(&(*tree)->entries);
716 struct got_tree_entry *te;
719 err = parse_tree_entry(&te, &elen, buf, remain);
723 SIMPLEQ_INSERT_TAIL(&(*tree)->entries, te, entry);
729 got_object_tree_close(*tree);
730 return got_error(GOT_ERR_BAD_OBJ_DATA);
736 static const struct got_error *
737 read_to_mem(uint8_t **outbuf, size_t *outlen, FILE *f)
739 const struct got_error *err = NULL;
740 static const size_t blocksize = 512;
741 size_t n, total, remain;
747 buf = calloc(1, blocksize);
749 return got_error_from_errno();
756 newbuf = reallocarray(buf, 1, total + blocksize);
757 if (newbuf == NULL) {
758 err = got_error_from_errno();
764 n = fread(buf + total, 1, remain, f);
767 err = got_ferror(f, GOT_ERR_IO);
785 static const struct got_error *
786 read_commit_object(struct got_commit_object **commit, struct got_object *obj,
789 const struct got_error *err = NULL;
793 if (obj->flags & GOT_OBJ_FLAG_PACKED)
794 err = read_to_mem(&p, &len, f);
796 err = got_inflate_to_mem(&p, &len, f);
800 if (len < obj->hdrlen + obj->size) {
801 err = got_error(GOT_ERR_BAD_OBJ_DATA);
805 /* Skip object header. */
807 err = parse_commit_object(commit, p + obj->hdrlen, len);
814 read_commit_object_privsep_child(struct got_object *obj, int obj_fd,
817 const struct got_error *err = NULL;
818 struct got_commit_object *commit = NULL;
823 setproctitle("read commit object");
825 imsg_init(&ibuf, imsg_fds[1]);
827 /* revoke access to most system calls */
828 if (pledge("stdio", NULL) == -1) {
829 err = got_error_from_errno();
833 f = fdopen(obj_fd, "rb");
835 err = got_error_from_errno();
840 err = read_commit_object(&commit, obj, f);
844 err = got_privsep_send_commit(&ibuf, commit);
847 got_object_commit_close(commit);
849 got_privsep_send_error(&ibuf, err);
859 static const struct got_error *
860 read_commit_object_privsep(struct got_commit_object **commit,
861 struct got_repository *repo, struct got_object *obj, int fd)
863 const struct got_error *err = NULL, *err_child = NULL;
864 struct imsgbuf parent_ibuf;
868 if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, imsg_fds) == -1)
869 return got_error_from_errno();
873 return got_error_from_errno();
875 read_commit_object_privsep_child(obj, fd, imsg_fds);
880 imsg_init(&parent_ibuf, imsg_fds[0]);
881 err = got_privsep_recv_commit(commit, &parent_ibuf);
882 imsg_clear(&parent_ibuf);
883 err_child = wait_for_child(pid);
885 return err ? err : err_child;
888 const struct got_error *
889 got_object_commit_open(struct got_commit_object **commit,
890 struct got_repository *repo, struct got_object *obj)
892 const struct got_error *err = NULL;
894 if (obj->type != GOT_OBJ_TYPE_COMMIT)
895 return got_error(GOT_ERR_OBJ_TYPE);
897 if (obj->flags & GOT_OBJ_FLAG_PACKED) {
900 err = got_packfile_extract_object_to_mem(&buf, &len, obj, repo);
904 err = parse_commit_object(commit, buf, len);
908 err = open_loose_object(&fd, obj, repo);
911 err = read_commit_object_privsep(commit, repo, obj, fd);
918 got_object_commit_close(struct got_commit_object *commit)
920 struct got_parent_id *pid;
922 while (!SIMPLEQ_EMPTY(&commit->parent_ids)) {
923 pid = SIMPLEQ_FIRST(&commit->parent_ids);
924 SIMPLEQ_REMOVE_HEAD(&commit->parent_ids, entry);
929 free(commit->tree_id);
930 free(commit->author);
931 free(commit->author_tzoff);
932 free(commit->committer);
933 free(commit->committer_tzoff);
934 free(commit->logmsg);
938 static const struct got_error *
939 read_tree_object(struct got_tree_object **tree, struct got_object *obj, FILE *f)
941 const struct got_error *err = NULL;
945 if (obj->flags & GOT_OBJ_FLAG_PACKED)
946 err = read_to_mem(&p, &len, f);
948 err = got_inflate_to_mem(&p, &len, f);
952 if (len < obj->hdrlen + obj->size) {
953 err = got_error(GOT_ERR_BAD_OBJ_DATA);
957 /* Skip object header. */
959 err = parse_tree_object(tree, p + obj->hdrlen, len);
966 read_tree_object_privsep_child(struct got_object *obj, int obj_fd,
969 const struct got_error *err = NULL;
970 struct got_tree_object *tree = NULL;
975 setproctitle("read tree object");
977 imsg_init(&ibuf, imsg_fds[1]);
979 /* revoke access to most system calls */
980 if (pledge("stdio", NULL) == -1) {
981 err = got_error_from_errno();
985 f = fdopen(obj_fd, "rb");
987 err = got_error_from_errno();
992 err = read_tree_object(&tree, obj, f);
996 err = got_privsep_send_tree(&ibuf, tree);
999 got_object_tree_close(tree);
1001 got_privsep_send_error(&ibuf, err);
1011 static const struct got_error *
1012 read_tree_object_privsep(struct got_tree_object **tree, struct got_object *obj,
1015 const struct got_error *err = NULL, *err_child = NULL;
1016 struct imsgbuf parent_ibuf;
1020 if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, imsg_fds) == -1)
1021 return got_error_from_errno();
1025 return got_error_from_errno();
1026 else if (pid == 0) {
1027 read_tree_object_privsep_child(obj, fd, imsg_fds);
1032 imsg_init(&parent_ibuf, imsg_fds[0]);
1033 err = got_privsep_recv_tree(tree, &parent_ibuf);
1034 imsg_clear(&parent_ibuf);
1035 err_child = wait_for_child(pid);
1037 return err ? err : err_child;
1040 const struct got_error *
1041 got_object_tree_open(struct got_tree_object **tree,
1042 struct got_repository *repo, struct got_object *obj)
1044 const struct got_error *err = NULL;
1046 if (obj->type != GOT_OBJ_TYPE_TREE)
1047 return got_error(GOT_ERR_OBJ_TYPE);
1049 if (obj->flags & GOT_OBJ_FLAG_PACKED) {
1052 err = got_packfile_extract_object_to_mem(&buf, &len, obj, repo);
1056 err = parse_tree_object(tree, buf, len);
1060 err = open_loose_object(&fd, obj, repo);
1063 err = read_tree_object_privsep(tree, obj, fd);
1070 got_object_tree_close(struct got_tree_object *tree)
1072 struct got_tree_entry *te;
1074 while (!SIMPLEQ_EMPTY(&tree->entries)) {
1075 te = SIMPLEQ_FIRST(&tree->entries);
1076 SIMPLEQ_REMOVE_HEAD(&tree->entries, entry);
1077 tree_entry_close(te);
1083 static const struct got_error *
1084 read_blob_object_privsep_child(int outfd, int infd, int imsg_fds[2])
1086 const struct got_error *err = NULL;
1087 struct imsgbuf ibuf;
1090 FILE *infile = NULL;
1092 setproctitle("read blob object");
1094 imsg_init(&ibuf, imsg_fds[1]);
1096 /* revoke access to most system calls */
1097 if (pledge("stdio", NULL) == -1) {
1098 err = got_error_from_errno();
1102 infile = fdopen(infd, "rb");
1103 if (infile == NULL) {
1104 err = got_error_from_errno();
1108 err = got_inflate_to_fd(&size, infile, outfd);
1113 err = got_privsep_send_blob(&ibuf, size);
1116 got_privsep_send_error(&ibuf, err);
1125 static const struct got_error *
1126 read_blob_object_privsep(size_t *size, int outfd, int infd)
1128 struct imsgbuf parent_ibuf;
1130 const struct got_error *err = NULL, *err_child = NULL;
1133 if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, imsg_fds) == -1)
1134 return got_error_from_errno();
1138 return got_error_from_errno();
1139 else if (pid == 0) {
1140 read_blob_object_privsep_child(outfd, infd, imsg_fds);
1145 imsg_init(&parent_ibuf, imsg_fds[0]);
1146 err = got_privsep_recv_blob(size, &parent_ibuf);
1147 imsg_clear(&parent_ibuf);
1148 err_child = wait_for_child(pid);
1150 if (lseek(outfd, SEEK_SET, 0) == -1)
1151 err = got_error_from_errno();
1152 return err ? err : err_child;
1155 const struct got_error *
1156 got_object_blob_open(struct got_blob_object **blob,
1157 struct got_repository *repo, struct got_object *obj, size_t blocksize)
1159 const struct got_error *err = NULL;
1161 if (obj->type != GOT_OBJ_TYPE_BLOB)
1162 return got_error(GOT_ERR_OBJ_TYPE);
1164 if (blocksize < obj->hdrlen)
1165 return got_error(GOT_ERR_NO_SPACE);
1167 *blob = calloc(1, sizeof(**blob));
1169 return got_error_from_errno();
1171 (*blob)->read_buf = calloc(1, blocksize);
1172 if ((*blob)->read_buf == NULL) {
1173 err = got_error_from_errno();
1176 if (obj->flags & GOT_OBJ_FLAG_PACKED) {
1177 err = got_packfile_extract_object(&((*blob)->f), obj, repo);
1185 err = open_loose_object(&infd, obj, repo);
1190 outfd = got_opentempfd();
1192 err = got_error_from_errno();
1197 err = read_blob_object_privsep(&size, outfd, infd);
1202 if (size != obj->hdrlen + obj->size) {
1203 err = got_error(GOT_ERR_PRIVSEP_LEN);
1208 if (fstat(outfd, &sb) == -1) {
1209 err = got_error_from_errno();
1214 if (sb.st_size != size) {
1215 err = got_error(GOT_ERR_PRIVSEP_LEN);
1220 (*blob)->f = fdopen(outfd, "rb");
1221 if ((*blob)->f == NULL) {
1222 err = got_error_from_errno();
1228 (*blob)->hdrlen = obj->hdrlen;
1229 (*blob)->blocksize = blocksize;
1230 memcpy(&(*blob)->id.sha1, obj->id.sha1, SHA1_DIGEST_LENGTH);
1236 free((*blob)->read_buf);
1244 got_object_blob_close(struct got_blob_object *blob)
1246 free(blob->read_buf);
1252 got_object_blob_id_str(struct got_blob_object *blob, char *buf, size_t size)
1254 return got_sha1_digest_to_str(blob->id.sha1, buf, size);
1258 got_object_blob_get_hdrlen(struct got_blob_object *blob)
1260 return blob->hdrlen;
1264 got_object_blob_get_read_buf(struct got_blob_object *blob)
1266 return blob->read_buf;
1269 const struct got_error *
1270 got_object_blob_read_block(size_t *outlenp, struct got_blob_object *blob)
1274 n = fread(blob->read_buf, 1, blob->blocksize, blob->f);
1275 if (n == 0 && ferror(blob->f))
1276 return got_ferror(blob->f, GOT_ERR_IO);