2 a1fd68d8 2018-01-12 stsp * Copyright (c) 2018 Stefan Sperling <stsp@openbsd.org>
4 d71d75ad 2017-11-05 stsp * Permission to use, copy, modify, and distribute this software for any
5 d71d75ad 2017-11-05 stsp * purpose with or without fee is hereby granted, provided that the above
6 d71d75ad 2017-11-05 stsp * copyright notice and this permission notice appear in all copies.
8 d71d75ad 2017-11-05 stsp * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 d71d75ad 2017-11-05 stsp * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 d71d75ad 2017-11-05 stsp * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 d71d75ad 2017-11-05 stsp * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 d71d75ad 2017-11-05 stsp * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 d71d75ad 2017-11-05 stsp * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 d71d75ad 2017-11-05 stsp * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 2178c42e 2018-04-22 stsp #include <sys/types.h>
18 0ffeb3c2 2017-11-26 stsp #include <sys/stat.h>
19 d1cda826 2017-11-06 stsp #include <sys/queue.h>
20 2178c42e 2018-04-22 stsp #include <sys/uio.h>
21 2178c42e 2018-04-22 stsp #include <sys/socket.h>
22 2178c42e 2018-04-22 stsp #include <sys/wait.h>
24 a1fd68d8 2018-01-12 stsp #include <errno.h>
25 2178c42e 2018-04-22 stsp #include <fcntl.h>
26 d71d75ad 2017-11-05 stsp #include <stdio.h>
27 ab9a70b2 2017-11-06 stsp #include <stdlib.h>
28 ab9a70b2 2017-11-06 stsp #include <string.h>
29 2178c42e 2018-04-22 stsp #include <stdint.h>
30 d71d75ad 2017-11-05 stsp #include <sha1.h>
31 ab9a70b2 2017-11-06 stsp #include <zlib.h>
32 ab9a70b2 2017-11-06 stsp #include <ctype.h>
33 ab9a70b2 2017-11-06 stsp #include <limits.h>
34 2178c42e 2018-04-22 stsp #include <imsg.h>
36 ab9a70b2 2017-11-06 stsp #include "got_error.h"
37 d71d75ad 2017-11-05 stsp #include "got_object.h"
38 ab9a70b2 2017-11-06 stsp #include "got_repository.h"
39 511a516b 2018-05-19 stsp #include "got_opentemp.h"
41 718b3ab0 2018-03-17 stsp #include "got_lib_sha1.h"
42 718b3ab0 2018-03-17 stsp #include "got_lib_delta.h"
43 718b3ab0 2018-03-17 stsp #include "got_lib_pack.h"
44 2178c42e 2018-04-22 stsp #include "got_lib_path.h"
45 718b3ab0 2018-03-17 stsp #include "got_lib_zbuf.h"
46 718b3ab0 2018-03-17 stsp #include "got_lib_object.h"
47 2178c42e 2018-04-22 stsp #include "got_lib_privsep.h"
50 ab9a70b2 2017-11-06 stsp #define MIN(_a,_b) ((_a) < (_b) ? (_a) : (_b))
53 ab9a70b2 2017-11-06 stsp #ifndef nitems
54 ab9a70b2 2017-11-06 stsp #define nitems(_a) (sizeof(_a) / sizeof((_a)[0]))
57 ab9a70b2 2017-11-06 stsp #define GOT_OBJ_TAG_COMMIT "commit"
58 ab9a70b2 2017-11-06 stsp #define GOT_OBJ_TAG_TREE "tree"
59 ab9a70b2 2017-11-06 stsp #define GOT_OBJ_TAG_BLOB "blob"
61 d1cda826 2017-11-06 stsp #define GOT_COMMIT_TAG_TREE "tree "
62 d1cda826 2017-11-06 stsp #define GOT_COMMIT_TAG_PARENT "parent "
63 d1cda826 2017-11-06 stsp #define GOT_COMMIT_TAG_AUTHOR "author "
64 d1cda826 2017-11-06 stsp #define GOT_COMMIT_TAG_COMMITTER "committer "
66 ef0981d5 2018-02-12 stsp const struct got_error *
67 ef0981d5 2018-02-12 stsp got_object_id_str(char **outbuf, struct got_object_id *id)
69 ef0981d5 2018-02-12 stsp static const size_t len = SHA1_DIGEST_STRING_LENGTH;
71 ef0981d5 2018-02-12 stsp *outbuf = calloc(1, len);
72 ef0981d5 2018-02-12 stsp if (*outbuf == NULL)
73 0a585a0d 2018-03-17 stsp return got_error_from_errno();
75 ef0981d5 2018-02-12 stsp if (got_sha1_digest_to_str(id->sha1, *outbuf, len) == NULL) {
76 ef0981d5 2018-02-12 stsp free(*outbuf);
77 ef0981d5 2018-02-12 stsp *outbuf = NULL;
78 ef0981d5 2018-02-12 stsp return got_error(GOT_ERR_BAD_OBJ_ID_STR);
81 ef0981d5 2018-02-12 stsp return NULL;
85 a1fd68d8 2018-01-12 stsp got_object_id_cmp(struct got_object_id *id1, struct got_object_id *id2)
87 a1fd68d8 2018-01-12 stsp return memcmp(id1->sha1, id2->sha1, SHA1_DIGEST_LENGTH);
90 8bf5b3c9 2018-03-17 stsp struct got_object_id *
91 8bf5b3c9 2018-03-17 stsp got_object_id_dup(struct got_object_id *id1)
93 8bf5b3c9 2018-03-17 stsp struct got_object_id *id2;
95 8bf5b3c9 2018-03-17 stsp id2 = malloc(sizeof(*id2));
96 8bf5b3c9 2018-03-17 stsp if (id2 == NULL)
97 8bf5b3c9 2018-03-17 stsp return NULL;
98 8bf5b3c9 2018-03-17 stsp memcpy(id2, id1, sizeof(*id2));
102 3235492e 2018-04-01 stsp struct got_object_id *
103 3235492e 2018-04-01 stsp got_object_get_id(struct got_object *obj)
105 3235492e 2018-04-01 stsp return got_object_id_dup(&obj->id);
108 bacc9935 2018-05-20 stsp const struct got_error *
109 bacc9935 2018-05-20 stsp got_object_get_id_str(char **outbuf, struct got_object *obj)
111 bacc9935 2018-05-20 stsp return got_object_id_str(outbuf, &obj->id);
115 b107e67f 2018-01-19 stsp got_object_get_type(struct got_object *obj)
117 b107e67f 2018-01-19 stsp switch (obj->type) {
118 a1fd68d8 2018-01-12 stsp case GOT_OBJ_TYPE_COMMIT:
119 a1fd68d8 2018-01-12 stsp case GOT_OBJ_TYPE_TREE:
120 a1fd68d8 2018-01-12 stsp case GOT_OBJ_TYPE_BLOB:
121 b107e67f 2018-01-19 stsp case GOT_OBJ_TYPE_TAG:
122 b107e67f 2018-01-19 stsp return obj->type;
128 96f5e8b3 2018-01-23 stsp /* not reached */
132 ab9a70b2 2017-11-06 stsp static const struct got_error *
133 d1cda826 2017-11-06 stsp parse_object_header(struct got_object **obj, char *buf, size_t len)
135 ab9a70b2 2017-11-06 stsp const char *obj_tags[] = {
136 ab9a70b2 2017-11-06 stsp GOT_OBJ_TAG_COMMIT,
137 ab9a70b2 2017-11-06 stsp GOT_OBJ_TAG_TREE,
138 ab9a70b2 2017-11-06 stsp GOT_OBJ_TAG_BLOB
140 ab9a70b2 2017-11-06 stsp const int obj_types[] = {
141 ab9a70b2 2017-11-06 stsp GOT_OBJ_TYPE_COMMIT,
142 ab9a70b2 2017-11-06 stsp GOT_OBJ_TYPE_TREE,
143 ab9a70b2 2017-11-06 stsp GOT_OBJ_TYPE_BLOB,
145 ab9a70b2 2017-11-06 stsp int type = 0;
146 d1cda826 2017-11-06 stsp size_t size = 0, hdrlen = 0;
148 ab9a70b2 2017-11-06 stsp char *p = strchr(buf, '\0');
150 ab9a70b2 2017-11-06 stsp if (p == NULL)
151 ab9a70b2 2017-11-06 stsp return got_error(GOT_ERR_BAD_OBJ_HDR);
153 d1cda826 2017-11-06 stsp hdrlen = strlen(buf) + 1 /* '\0' */;
155 ab9a70b2 2017-11-06 stsp for (i = 0; i < nitems(obj_tags); i++) {
156 ab9a70b2 2017-11-06 stsp const char *tag = obj_tags[i];
157 63323519 2017-11-06 stsp size_t tlen = strlen(tag);
158 ab9a70b2 2017-11-06 stsp const char *errstr;
160 63323519 2017-11-06 stsp if (strncmp(buf, tag, tlen) != 0)
163 ab9a70b2 2017-11-06 stsp type = obj_types[i];
164 63323519 2017-11-06 stsp if (len <= tlen)
165 ab9a70b2 2017-11-06 stsp return got_error(GOT_ERR_BAD_OBJ_HDR);
166 63323519 2017-11-06 stsp size = strtonum(buf + tlen, 0, LONG_MAX, &errstr);
167 ab9a70b2 2017-11-06 stsp if (errstr != NULL)
168 ab9a70b2 2017-11-06 stsp return got_error(GOT_ERR_BAD_OBJ_HDR);
172 ab9a70b2 2017-11-06 stsp if (type == 0)
173 ab9a70b2 2017-11-06 stsp return got_error(GOT_ERR_BAD_OBJ_HDR);
175 ab9a70b2 2017-11-06 stsp *obj = calloc(1, sizeof(**obj));
176 1db76ab5 2018-01-26 mpi if (*obj == NULL)
177 0a585a0d 2018-03-17 stsp return got_error_from_errno();
178 ab9a70b2 2017-11-06 stsp (*obj)->type = type;
179 d1cda826 2017-11-06 stsp (*obj)->hdrlen = hdrlen;
180 ab9a70b2 2017-11-06 stsp (*obj)->size = size;
181 ab9a70b2 2017-11-06 stsp return NULL;
184 ab9a70b2 2017-11-06 stsp static const struct got_error *
185 2178c42e 2018-04-22 stsp read_object_header(struct got_object **obj, FILE *f)
187 ab9a70b2 2017-11-06 stsp const struct got_error *err;
188 ab9a70b2 2017-11-06 stsp struct got_zstream_buf zb;
190 a3e2cbea 2017-12-01 stsp const size_t zbsize = 64;
191 744d9326 2017-12-01 stsp size_t outlen, totlen;
194 744d9326 2017-12-01 stsp buf = calloc(zbsize, sizeof(char));
195 a3e2cbea 2017-12-01 stsp if (buf == NULL)
196 0a585a0d 2018-03-17 stsp return got_error_from_errno();
198 19d747f7 2018-03-16 stsp err = got_inflate_init(&zb, NULL, zbsize);
200 ab9a70b2 2017-11-06 stsp return err;
203 744d9326 2017-12-01 stsp totlen = 0;
205 126ee060 2018-02-11 stsp err = got_inflate_read(&zb, f, &outlen);
208 e302c59e 2017-12-01 stsp if (strchr(zb.outbuf, '\0') == NULL) {
209 a3e2cbea 2017-12-01 stsp buf = recallocarray(buf, 1 + i, 2 + i, zbsize);
210 e302c59e 2017-12-01 stsp if (buf == NULL) {
211 0a585a0d 2018-03-17 stsp err = got_error_from_errno();
215 c56976de 2017-12-01 stsp memcpy(buf + totlen, zb.outbuf, outlen);
216 744d9326 2017-12-01 stsp totlen += outlen;
218 a3e2cbea 2017-12-01 stsp } while (strchr(zb.outbuf, '\0') == NULL);
220 744d9326 2017-12-01 stsp err = parse_object_header(obj, buf, totlen);
222 4ca7b755 2018-01-26 stsp got_inflate_end(&zb);
223 2178c42e 2018-04-22 stsp return err;
226 302b7dd6 2018-04-23 stsp static void
227 302b7dd6 2018-04-23 stsp read_object_header_privsep_child(int obj_fd, int imsg_fds[2])
229 302b7dd6 2018-04-23 stsp const struct got_error *err = NULL;
230 e3306bd9 2018-04-23 stsp struct got_object *obj = NULL;
231 e3306bd9 2018-04-23 stsp struct imsgbuf ibuf;
232 302b7dd6 2018-04-23 stsp FILE *f = NULL;
233 302b7dd6 2018-04-23 stsp int status = 0;
235 be37c2e6 2018-04-24 stsp setproctitle("read object header");
236 302b7dd6 2018-04-23 stsp close(imsg_fds[0]);
237 e3306bd9 2018-04-23 stsp imsg_init(&ibuf, imsg_fds[1]);
239 302b7dd6 2018-04-23 stsp /* revoke access to most system calls */
240 302b7dd6 2018-04-23 stsp if (pledge("stdio", NULL) == -1) {
241 302b7dd6 2018-04-23 stsp err = got_error_from_errno();
245 302b7dd6 2018-04-23 stsp f = fdopen(obj_fd, "rb");
246 302b7dd6 2018-04-23 stsp if (f == NULL) {
247 302b7dd6 2018-04-23 stsp err = got_error_from_errno();
248 302b7dd6 2018-04-23 stsp close(obj_fd);
252 e3306bd9 2018-04-23 stsp err = read_object_header(&obj, f);
256 e3306bd9 2018-04-23 stsp err = got_privsep_send_obj(&ibuf, obj, 0);
259 e3306bd9 2018-04-23 stsp got_object_close(obj);
261 e3306bd9 2018-04-23 stsp got_privsep_send_error(&ibuf, err);
262 302b7dd6 2018-04-23 stsp status = 1;
266 e3306bd9 2018-04-23 stsp imsg_clear(&ibuf);
267 302b7dd6 2018-04-23 stsp close(imsg_fds[1]);
268 302b7dd6 2018-04-23 stsp _exit(status);
271 b419fc47 2018-04-26 stsp static const struct got_error *
272 b419fc47 2018-04-26 stsp wait_for_child(pid_t pid)
274 b419fc47 2018-04-26 stsp int child_status;
276 b419fc47 2018-04-26 stsp waitpid(pid, &child_status, 0);
278 b419fc47 2018-04-26 stsp if (!WIFEXITED(child_status))
279 b419fc47 2018-04-26 stsp return got_error(GOT_ERR_PRIVSEP_DIED);
281 b419fc47 2018-04-26 stsp if (WEXITSTATUS(child_status) != 0)
282 b419fc47 2018-04-26 stsp return got_error(GOT_ERR_PRIVSEP_EXIT);
284 b419fc47 2018-04-26 stsp return NULL;
287 2178c42e 2018-04-22 stsp static const struct got_error *
288 2178c42e 2018-04-22 stsp read_object_header_privsep(struct got_object **obj, int fd)
290 2178c42e 2018-04-22 stsp struct imsgbuf parent_ibuf;
291 2178c42e 2018-04-22 stsp int imsg_fds[2];
292 b419fc47 2018-04-26 stsp const struct got_error *err = NULL, *err_child = NULL;
295 2178c42e 2018-04-22 stsp if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, imsg_fds) == -1)
296 2178c42e 2018-04-22 stsp return got_error_from_errno();
298 2178c42e 2018-04-22 stsp pid = fork();
299 2178c42e 2018-04-22 stsp if (pid == -1)
300 2178c42e 2018-04-22 stsp return got_error_from_errno();
301 2178c42e 2018-04-22 stsp else if (pid == 0) {
302 302b7dd6 2018-04-23 stsp read_object_header_privsep_child(fd, imsg_fds);
303 302b7dd6 2018-04-23 stsp /* not reached */
306 2178c42e 2018-04-22 stsp close(imsg_fds[1]);
307 2178c42e 2018-04-22 stsp imsg_init(&parent_ibuf, imsg_fds[0]);
308 2178c42e 2018-04-22 stsp err = got_privsep_recv_obj(obj, &parent_ibuf);
309 2178c42e 2018-04-22 stsp imsg_clear(&parent_ibuf);
310 b419fc47 2018-04-26 stsp err_child = wait_for_child(pid);
311 2178c42e 2018-04-22 stsp close(imsg_fds[0]);
312 b419fc47 2018-04-26 stsp return err ? err : err_child;
315 d1cda826 2017-11-06 stsp static const struct got_error *
316 4558fcd4 2018-01-14 stsp object_path(char **path, struct got_object_id *id, struct got_repository *repo)
318 ab9a70b2 2017-11-06 stsp const struct got_error *err = NULL;
320 d1cda826 2017-11-06 stsp char *path_objects = got_repo_get_path_objects(repo);
322 e6b1056e 2018-04-22 stsp *path = NULL;
324 ab9a70b2 2017-11-06 stsp if (path_objects == NULL)
325 0a585a0d 2018-03-17 stsp return got_error_from_errno();
327 ef0981d5 2018-02-12 stsp err = got_object_id_str(&hex, id);
329 ef0981d5 2018-02-12 stsp return err;
331 d1cda826 2017-11-06 stsp if (asprintf(path, "%s/%.2x/%s", path_objects,
332 d1cda826 2017-11-06 stsp id->sha1[0], hex + 2) == -1)
333 0a585a0d 2018-03-17 stsp err = got_error_from_errno();
336 d1cda826 2017-11-06 stsp free(path_objects);
337 d1cda826 2017-11-06 stsp return err;
340 4ee4114f 2018-01-23 stsp static const struct got_error *
341 d5003b79 2018-04-22 stsp open_loose_object(int *fd, struct got_object *obj, struct got_repository *repo)
343 d1cda826 2017-11-06 stsp const struct got_error *err = NULL;
344 a1fd68d8 2018-01-12 stsp char *path;
346 6c00b545 2018-01-17 stsp err = object_path(&path, &obj->id, repo);
348 d1cda826 2017-11-06 stsp return err;
349 d5003b79 2018-04-22 stsp *fd = open(path, O_RDONLY | O_NOFOLLOW, GOT_DEFAULT_FILE_MODE);
350 d5003b79 2018-04-22 stsp if (*fd == -1) {
351 6c00b545 2018-01-17 stsp err = got_error_from_errno();
355 4558fcd4 2018-01-14 stsp free(path);
356 4558fcd4 2018-01-14 stsp return err;
359 4558fcd4 2018-01-14 stsp const struct got_error *
360 4558fcd4 2018-01-14 stsp got_object_open(struct got_object **obj, struct got_repository *repo,
361 4558fcd4 2018-01-14 stsp struct got_object_id *id)
363 6c00b545 2018-01-17 stsp const struct got_error *err = NULL;
364 6c00b545 2018-01-17 stsp char *path;
367 6c00b545 2018-01-17 stsp err = object_path(&path, id, repo);
369 4558fcd4 2018-01-14 stsp return err;
371 2178c42e 2018-04-22 stsp fd = open(path, O_RDONLY | O_NOFOLLOW, GOT_DEFAULT_FILE_MODE);
372 2178c42e 2018-04-22 stsp if (fd == -1) {
373 6c00b545 2018-01-17 stsp if (errno != ENOENT) {
374 6c00b545 2018-01-17 stsp err = got_error_from_errno();
377 6c00b545 2018-01-17 stsp err = got_packfile_open_object(obj, id, repo);
380 6c00b545 2018-01-17 stsp if (*obj == NULL)
381 6c00b545 2018-01-17 stsp err = got_error(GOT_ERR_NO_OBJ);
383 2178c42e 2018-04-22 stsp err = read_object_header_privsep(obj, fd);
386 ab9a70b2 2017-11-06 stsp memcpy((*obj)->id.sha1, id->sha1, SHA1_DIGEST_LENGTH);
389 6c00b545 2018-01-17 stsp free(path);
390 2178c42e 2018-04-22 stsp if (fd != -1)
392 ab9a70b2 2017-11-06 stsp return err;
396 6dfa2fd3 2018-02-12 stsp const struct got_error *
397 6dfa2fd3 2018-02-12 stsp got_object_open_by_id_str(struct got_object **obj, struct got_repository *repo,
398 6dfa2fd3 2018-02-12 stsp const char *id_str)
400 6dfa2fd3 2018-02-12 stsp struct got_object_id id;
402 6dfa2fd3 2018-02-12 stsp if (!got_parse_sha1_digest(id.sha1, id_str))
403 6dfa2fd3 2018-02-12 stsp return got_error(GOT_ERR_BAD_OBJ_ID_STR);
405 6dfa2fd3 2018-02-12 stsp return got_object_open(obj, repo, &id);
409 ab9a70b2 2017-11-06 stsp got_object_close(struct got_object *obj)
411 96f5e8b3 2018-01-23 stsp if (obj->flags & GOT_OBJ_FLAG_DELTIFIED) {
412 c3703302 2018-01-23 stsp struct got_delta *delta;
413 96f5e8b3 2018-01-23 stsp while (!SIMPLEQ_EMPTY(&obj->deltas.entries)) {
414 c3703302 2018-01-23 stsp delta = SIMPLEQ_FIRST(&obj->deltas.entries);
415 96f5e8b3 2018-01-23 stsp SIMPLEQ_REMOVE_HEAD(&obj->deltas.entries, entry);
416 c3703302 2018-01-23 stsp got_delta_close(delta);
419 96f5e8b3 2018-01-23 stsp if (obj->flags & GOT_OBJ_FLAG_PACKED)
420 96f5e8b3 2018-01-23 stsp free(obj->path_packfile);
424 bff6ca00 2018-04-23 stsp struct got_commit_object *
425 bff6ca00 2018-04-23 stsp got_object_commit_alloc_partial(void)
427 bff6ca00 2018-04-23 stsp struct got_commit_object *commit;
429 bff6ca00 2018-04-23 stsp commit = calloc(1, sizeof(*commit));
430 bff6ca00 2018-04-23 stsp if (commit == NULL)
431 bff6ca00 2018-04-23 stsp return NULL;
432 bff6ca00 2018-04-23 stsp commit->tree_id = calloc(1, sizeof(*commit->tree_id));
433 bff6ca00 2018-04-23 stsp if (commit->tree_id == NULL) {
434 bff6ca00 2018-04-23 stsp free(commit);
435 bff6ca00 2018-04-23 stsp return NULL;
438 bff6ca00 2018-04-23 stsp SIMPLEQ_INIT(&commit->parent_ids);
440 bff6ca00 2018-04-23 stsp return commit;
443 bff6ca00 2018-04-23 stsp const struct got_error *
444 bff6ca00 2018-04-23 stsp got_object_commit_add_parent(struct got_commit_object *commit,
445 bff6ca00 2018-04-23 stsp const char *id_str)
447 bff6ca00 2018-04-23 stsp const struct got_error *err = NULL;
448 bff6ca00 2018-04-23 stsp struct got_parent_id *pid;
450 bff6ca00 2018-04-23 stsp pid = calloc(1, sizeof(*pid));
451 bff6ca00 2018-04-23 stsp if (pid == NULL)
452 bff6ca00 2018-04-23 stsp return got_error_from_errno();
454 bff6ca00 2018-04-23 stsp pid->id = calloc(1, sizeof(*pid->id));
455 bff6ca00 2018-04-23 stsp if (pid->id == NULL) {
456 bff6ca00 2018-04-23 stsp err = got_error_from_errno();
458 bff6ca00 2018-04-23 stsp return err;
461 bff6ca00 2018-04-23 stsp if (!got_parse_sha1_digest(pid->id->sha1, id_str)) {
462 bff6ca00 2018-04-23 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
463 bff6ca00 2018-04-23 stsp free(pid->id);
465 bff6ca00 2018-04-23 stsp return err;
468 bff6ca00 2018-04-23 stsp SIMPLEQ_INSERT_TAIL(&commit->parent_ids, pid, entry);
469 bff6ca00 2018-04-23 stsp commit->nparents++;
471 bff6ca00 2018-04-23 stsp return NULL;
474 d1cda826 2017-11-06 stsp static const struct got_error *
475 d1cda826 2017-11-06 stsp parse_commit_object(struct got_commit_object **commit, char *buf, size_t len)
477 d1cda826 2017-11-06 stsp const struct got_error *err = NULL;
478 d1cda826 2017-11-06 stsp char *s = buf;
479 d1cda826 2017-11-06 stsp size_t tlen;
480 d1cda826 2017-11-06 stsp ssize_t remain = (ssize_t)len;
482 bff6ca00 2018-04-23 stsp *commit = got_object_commit_alloc_partial();
483 d1cda826 2017-11-06 stsp if (*commit == NULL)
484 0a585a0d 2018-03-17 stsp return got_error_from_errno();
486 d1cda826 2017-11-06 stsp tlen = strlen(GOT_COMMIT_TAG_TREE);
487 d1cda826 2017-11-06 stsp if (strncmp(s, GOT_COMMIT_TAG_TREE, tlen) == 0) {
488 d1cda826 2017-11-06 stsp remain -= tlen;
489 d1cda826 2017-11-06 stsp if (remain < SHA1_DIGEST_STRING_LENGTH) {
490 d1cda826 2017-11-06 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
494 59ece79d 2018-02-12 stsp if (!got_parse_sha1_digest((*commit)->tree_id->sha1, s)) {
495 d1cda826 2017-11-06 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
498 d1cda826 2017-11-06 stsp remain -= SHA1_DIGEST_STRING_LENGTH;
499 d1cda826 2017-11-06 stsp s += SHA1_DIGEST_STRING_LENGTH;
501 d1cda826 2017-11-06 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
505 d1cda826 2017-11-06 stsp tlen = strlen(GOT_COMMIT_TAG_PARENT);
506 d1cda826 2017-11-06 stsp while (strncmp(s, GOT_COMMIT_TAG_PARENT, tlen) == 0) {
507 d1cda826 2017-11-06 stsp remain -= tlen;
508 d1cda826 2017-11-06 stsp if (remain < SHA1_DIGEST_STRING_LENGTH) {
509 d1cda826 2017-11-06 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
513 bff6ca00 2018-04-23 stsp err = got_object_commit_add_parent(*commit, s);
517 eb651edf 2018-02-11 stsp remain -= SHA1_DIGEST_STRING_LENGTH;
518 d1cda826 2017-11-06 stsp s += SHA1_DIGEST_STRING_LENGTH;
521 d1cda826 2017-11-06 stsp tlen = strlen(GOT_COMMIT_TAG_AUTHOR);
522 d1cda826 2017-11-06 stsp if (strncmp(s, GOT_COMMIT_TAG_AUTHOR, tlen) == 0) {
525 d1cda826 2017-11-06 stsp remain -= tlen;
526 d1cda826 2017-11-06 stsp if (remain <= 0) {
527 d1cda826 2017-11-06 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
531 d1cda826 2017-11-06 stsp p = strchr(s, '\n');
532 d1cda826 2017-11-06 stsp if (p == NULL) {
533 d1cda826 2017-11-06 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
537 d1cda826 2017-11-06 stsp (*commit)->author = strdup(s);
538 d1cda826 2017-11-06 stsp if ((*commit)->author == NULL) {
539 0a585a0d 2018-03-17 stsp err = got_error_from_errno();
542 d1cda826 2017-11-06 stsp s += strlen((*commit)->author) + 1;
543 eb651edf 2018-02-11 stsp remain -= strlen((*commit)->author) + 1;
546 d1cda826 2017-11-06 stsp tlen = strlen(GOT_COMMIT_TAG_COMMITTER);
547 d1cda826 2017-11-06 stsp if (strncmp(s, GOT_COMMIT_TAG_COMMITTER, tlen) == 0) {
550 d1cda826 2017-11-06 stsp remain -= tlen;
551 d1cda826 2017-11-06 stsp if (remain <= 0) {
552 d1cda826 2017-11-06 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
556 d1cda826 2017-11-06 stsp p = strchr(s, '\n');
557 d1cda826 2017-11-06 stsp if (p == NULL) {
558 d1cda826 2017-11-06 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
562 d1cda826 2017-11-06 stsp (*commit)->committer = strdup(s);
563 d1cda826 2017-11-06 stsp if ((*commit)->committer == NULL) {
564 0a585a0d 2018-03-17 stsp err = got_error_from_errno();
567 d1cda826 2017-11-06 stsp s += strlen((*commit)->committer) + 1;
568 eb651edf 2018-02-11 stsp remain -= strlen((*commit)->committer) + 1;
571 eb651edf 2018-02-11 stsp (*commit)->logmsg = strndup(s, remain);
572 eb651edf 2018-02-11 stsp if ((*commit)->logmsg == NULL) {
573 0a585a0d 2018-03-17 stsp err = got_error_from_errno();
578 d1cda826 2017-11-06 stsp got_object_commit_close(*commit);
579 59ece79d 2018-02-12 stsp *commit = NULL;
581 0ffeb3c2 2017-11-26 stsp return err;
584 0ffeb3c2 2017-11-26 stsp static void
585 0ffeb3c2 2017-11-26 stsp tree_entry_close(struct got_tree_entry *te)
587 59ece79d 2018-02-12 stsp free(te->id);
588 0ffeb3c2 2017-11-26 stsp free(te->name);
592 e033d803 2018-04-23 stsp struct got_tree_entry *
593 e033d803 2018-04-23 stsp got_alloc_tree_entry_partial(void)
595 e033d803 2018-04-23 stsp struct got_tree_entry *te;
597 e033d803 2018-04-23 stsp te = calloc(1, sizeof(*te));
598 e033d803 2018-04-23 stsp if (te == NULL)
599 e033d803 2018-04-23 stsp return NULL;
601 e033d803 2018-04-23 stsp te->id = calloc(1, sizeof(*te->id));
602 e033d803 2018-04-23 stsp if (te->id == NULL) {
609 0ffeb3c2 2017-11-26 stsp static const struct got_error *
610 0ffeb3c2 2017-11-26 stsp parse_tree_entry(struct got_tree_entry **te, size_t *elen, char *buf,
611 0ffeb3c2 2017-11-26 stsp size_t maxlen)
613 0ffeb3c2 2017-11-26 stsp char *p = buf, *space;
614 0ffeb3c2 2017-11-26 stsp const struct got_error *err = NULL;
616 e033d803 2018-04-23 stsp *te = got_alloc_tree_entry_partial();
617 0ffeb3c2 2017-11-26 stsp if (*te == NULL)
618 0a585a0d 2018-03-17 stsp return got_error_from_errno();
620 0ffeb3c2 2017-11-26 stsp *elen = strlen(buf) + 1;
621 0ffeb3c2 2017-11-26 stsp if (*elen > maxlen) {
623 59ece79d 2018-02-12 stsp *te = NULL;
624 0ffeb3c2 2017-11-26 stsp return got_error(GOT_ERR_BAD_OBJ_DATA);
627 0ffeb3c2 2017-11-26 stsp space = strchr(buf, ' ');
628 0ffeb3c2 2017-11-26 stsp if (space == NULL) {
629 0a585a0d 2018-03-17 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
631 59ece79d 2018-02-12 stsp *te = NULL;
632 0a585a0d 2018-03-17 stsp return err;
634 0ffeb3c2 2017-11-26 stsp while (*p != ' ') {
635 0ffeb3c2 2017-11-26 stsp if (*p < '0' && *p > '7') {
636 0ffeb3c2 2017-11-26 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
639 0ffeb3c2 2017-11-26 stsp (*te)->mode <<= 3;
640 0ffeb3c2 2017-11-26 stsp (*te)->mode |= *p - '0';
644 0ffeb3c2 2017-11-26 stsp (*te)->name = strdup(space + 1);
645 0ffeb3c2 2017-11-26 stsp if (*elen > maxlen || maxlen - *elen < SHA1_DIGEST_LENGTH) {
646 0ffeb3c2 2017-11-26 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
649 0ffeb3c2 2017-11-26 stsp buf += strlen(buf) + 1;
650 59ece79d 2018-02-12 stsp memcpy((*te)->id->sha1, buf, SHA1_DIGEST_LENGTH);
651 0ffeb3c2 2017-11-26 stsp *elen += SHA1_DIGEST_LENGTH;
654 0ffeb3c2 2017-11-26 stsp tree_entry_close(*te);
655 59ece79d 2018-02-12 stsp *te = NULL;
657 d1cda826 2017-11-06 stsp return err;
660 d1cda826 2017-11-06 stsp static const struct got_error *
661 e033d803 2018-04-23 stsp parse_tree_object(struct got_tree_object **tree, uint8_t *buf, size_t len)
663 90356acc 2018-01-27 stsp const struct got_error *err;
664 0ffeb3c2 2017-11-26 stsp size_t remain = len;
666 0ffeb3c2 2017-11-26 stsp *tree = calloc(1, sizeof(**tree));
667 0ffeb3c2 2017-11-26 stsp if (*tree == NULL)
668 0a585a0d 2018-03-17 stsp return got_error_from_errno();
670 0ffeb3c2 2017-11-26 stsp SIMPLEQ_INIT(&(*tree)->entries);
672 0ffeb3c2 2017-11-26 stsp while (remain > 0) {
673 0ffeb3c2 2017-11-26 stsp struct got_tree_entry *te;
674 0ffeb3c2 2017-11-26 stsp size_t elen;
676 90356acc 2018-01-27 stsp err = parse_tree_entry(&te, &elen, buf, remain);
678 90356acc 2018-01-27 stsp return err;
679 0ffeb3c2 2017-11-26 stsp (*tree)->nentries++;
680 0ffeb3c2 2017-11-26 stsp SIMPLEQ_INSERT_TAIL(&(*tree)->entries, te, entry);
681 0ffeb3c2 2017-11-26 stsp buf += elen;
682 0ffeb3c2 2017-11-26 stsp remain -= elen;
685 0ffeb3c2 2017-11-26 stsp if (remain != 0) {
686 0ffeb3c2 2017-11-26 stsp got_object_tree_close(*tree);
687 0ffeb3c2 2017-11-26 stsp return got_error(GOT_ERR_BAD_OBJ_DATA);
690 0ffeb3c2 2017-11-26 stsp return NULL;
693 0ffeb3c2 2017-11-26 stsp static const struct got_error *
694 eb651edf 2018-02-11 stsp read_to_mem(uint8_t **outbuf, size_t *outlen, FILE *f)
696 eb651edf 2018-02-11 stsp const struct got_error *err = NULL;
697 eb651edf 2018-02-11 stsp static const size_t blocksize = 512;
698 eb651edf 2018-02-11 stsp size_t n, total, remain;
699 eb651edf 2018-02-11 stsp uint8_t *buf;
701 eb651edf 2018-02-11 stsp *outbuf = NULL;
702 eb651edf 2018-02-11 stsp *outlen = 0;
704 eb651edf 2018-02-11 stsp buf = calloc(1, blocksize);
705 eb651edf 2018-02-11 stsp if (buf == NULL)
706 0a585a0d 2018-03-17 stsp return got_error_from_errno();
708 eb651edf 2018-02-11 stsp remain = blocksize;
710 eb651edf 2018-02-11 stsp while (1) {
711 eb651edf 2018-02-11 stsp if (remain == 0) {
712 eb651edf 2018-02-11 stsp uint8_t *newbuf;
713 eb651edf 2018-02-11 stsp newbuf = reallocarray(buf, 1, total + blocksize);
714 eb651edf 2018-02-11 stsp if (newbuf == NULL) {
715 0a585a0d 2018-03-17 stsp err = got_error_from_errno();
718 eb651edf 2018-02-11 stsp buf = newbuf;
719 eb651edf 2018-02-11 stsp remain += blocksize;
721 be89e2b1 2018-03-03 stsp n = fread(buf + total, 1, remain, f);
722 eb651edf 2018-02-11 stsp if (n == 0) {
723 eb651edf 2018-02-11 stsp if (ferror(f)) {
724 eb651edf 2018-02-11 stsp err = got_ferror(f, GOT_ERR_IO);
727 eb651edf 2018-02-11 stsp break; /* EOF */
729 eb651edf 2018-02-11 stsp remain -= n;
730 eb651edf 2018-02-11 stsp total += n;
734 eb651edf 2018-02-11 stsp if (err == NULL) {
735 eb651edf 2018-02-11 stsp *outbuf = buf;
736 eb651edf 2018-02-11 stsp *outlen = total;
739 eb651edf 2018-02-11 stsp return err;
742 eb651edf 2018-02-11 stsp static const struct got_error *
743 bff6ca00 2018-04-23 stsp read_commit_object(struct got_commit_object **commit, struct got_object *obj,
746 d1cda826 2017-11-06 stsp const struct got_error *err = NULL;
747 d1cda826 2017-11-06 stsp size_t len;
748 eb651edf 2018-02-11 stsp uint8_t *p;
750 eb651edf 2018-02-11 stsp if (obj->flags & GOT_OBJ_FLAG_PACKED)
751 eb651edf 2018-02-11 stsp err = read_to_mem(&p, &len, f);
753 eb651edf 2018-02-11 stsp err = got_inflate_to_mem(&p, &len, f);
755 d1cda826 2017-11-06 stsp return err;
757 d1cda826 2017-11-06 stsp if (len < obj->hdrlen + obj->size) {
758 d1cda826 2017-11-06 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
762 d1cda826 2017-11-06 stsp /* Skip object header. */
763 d1cda826 2017-11-06 stsp len -= obj->hdrlen;
764 eb651edf 2018-02-11 stsp err = parse_commit_object(commit, p + obj->hdrlen, len);
767 d1cda826 2017-11-06 stsp return err;
770 bff6ca00 2018-04-23 stsp static void
771 bff6ca00 2018-04-23 stsp read_commit_object_privsep_child(struct got_object *obj, int obj_fd,
772 bff6ca00 2018-04-23 stsp int imsg_fds[2])
774 bff6ca00 2018-04-23 stsp const struct got_error *err = NULL;
775 bff6ca00 2018-04-23 stsp struct got_commit_object *commit = NULL;
776 bff6ca00 2018-04-23 stsp struct imsgbuf ibuf;
777 bff6ca00 2018-04-23 stsp FILE *f = NULL;
778 bff6ca00 2018-04-23 stsp int status = 0;
780 be37c2e6 2018-04-24 stsp setproctitle("read commit object");
781 bff6ca00 2018-04-23 stsp close(imsg_fds[0]);
782 bff6ca00 2018-04-23 stsp imsg_init(&ibuf, imsg_fds[1]);
784 bff6ca00 2018-04-23 stsp /* revoke access to most system calls */
785 bff6ca00 2018-04-23 stsp if (pledge("stdio", NULL) == -1) {
786 bff6ca00 2018-04-23 stsp err = got_error_from_errno();
790 bff6ca00 2018-04-23 stsp f = fdopen(obj_fd, "rb");
791 bff6ca00 2018-04-23 stsp if (f == NULL) {
792 bff6ca00 2018-04-23 stsp err = got_error_from_errno();
793 bff6ca00 2018-04-23 stsp close(obj_fd);
797 bff6ca00 2018-04-23 stsp err = read_commit_object(&commit, obj, f);
801 068fd2bf 2018-04-24 stsp err = got_privsep_send_commit(&ibuf, commit);
803 bff6ca00 2018-04-23 stsp if (commit)
804 bff6ca00 2018-04-23 stsp got_object_commit_close(commit);
806 bff6ca00 2018-04-23 stsp got_privsep_send_error(&ibuf, err);
807 bff6ca00 2018-04-23 stsp status = 1;
811 bff6ca00 2018-04-23 stsp imsg_clear(&ibuf);
812 bff6ca00 2018-04-23 stsp close(imsg_fds[1]);
813 bff6ca00 2018-04-23 stsp _exit(status);
816 bff6ca00 2018-04-23 stsp static const struct got_error *
817 bff6ca00 2018-04-23 stsp read_commit_object_privsep(struct got_commit_object **commit,
818 bff6ca00 2018-04-23 stsp struct got_repository *repo, struct got_object *obj, int fd)
820 b419fc47 2018-04-26 stsp const struct got_error *err = NULL, *err_child = NULL;
821 bff6ca00 2018-04-23 stsp struct imsgbuf parent_ibuf;
822 bff6ca00 2018-04-23 stsp int imsg_fds[2];
825 bff6ca00 2018-04-23 stsp if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, imsg_fds) == -1)
826 bff6ca00 2018-04-23 stsp return got_error_from_errno();
828 bff6ca00 2018-04-23 stsp pid = fork();
829 bff6ca00 2018-04-23 stsp if (pid == -1)
830 bff6ca00 2018-04-23 stsp return got_error_from_errno();
831 bff6ca00 2018-04-23 stsp else if (pid == 0) {
832 bff6ca00 2018-04-23 stsp read_commit_object_privsep_child(obj, fd, imsg_fds);
833 e506bf32 2018-04-23 stsp /* not reached */
836 bff6ca00 2018-04-23 stsp close(imsg_fds[1]);
837 bff6ca00 2018-04-23 stsp imsg_init(&parent_ibuf, imsg_fds[0]);
838 068fd2bf 2018-04-24 stsp err = got_privsep_recv_commit(commit, &parent_ibuf);
839 bff6ca00 2018-04-23 stsp imsg_clear(&parent_ibuf);
840 b419fc47 2018-04-26 stsp err_child = wait_for_child(pid);
841 bff6ca00 2018-04-23 stsp close(imsg_fds[0]);
842 b419fc47 2018-04-26 stsp return err ? err : err_child;
845 d1cda826 2017-11-06 stsp const struct got_error *
846 d1cda826 2017-11-06 stsp got_object_commit_open(struct got_commit_object **commit,
847 d1cda826 2017-11-06 stsp struct got_repository *repo, struct got_object *obj)
849 d1cda826 2017-11-06 stsp const struct got_error *err = NULL;
851 d1cda826 2017-11-06 stsp if (obj->type != GOT_OBJ_TYPE_COMMIT)
852 d1cda826 2017-11-06 stsp return got_error(GOT_ERR_OBJ_TYPE);
854 ea35256b 2018-03-16 stsp if (obj->flags & GOT_OBJ_FLAG_PACKED) {
855 ea35256b 2018-03-16 stsp uint8_t *buf;
856 ea35256b 2018-03-16 stsp size_t len;
857 ea35256b 2018-03-16 stsp err = got_packfile_extract_object_to_mem(&buf, &len, obj, repo);
859 ea35256b 2018-03-16 stsp return err;
860 b29656e2 2018-03-16 stsp obj->size = len;
861 b29656e2 2018-03-16 stsp err = parse_commit_object(commit, buf, len);
865 d5003b79 2018-04-22 stsp err = open_loose_object(&fd, obj, repo);
867 ea35256b 2018-03-16 stsp return err;
868 bff6ca00 2018-04-23 stsp err = read_commit_object_privsep(commit, repo, obj, fd);
871 d1cda826 2017-11-06 stsp return err;
875 d1cda826 2017-11-06 stsp got_object_commit_close(struct got_commit_object *commit)
877 d1cda826 2017-11-06 stsp struct got_parent_id *pid;
879 d1cda826 2017-11-06 stsp while (!SIMPLEQ_EMPTY(&commit->parent_ids)) {
880 d1cda826 2017-11-06 stsp pid = SIMPLEQ_FIRST(&commit->parent_ids);
881 d1cda826 2017-11-06 stsp SIMPLEQ_REMOVE_HEAD(&commit->parent_ids, entry);
882 59ece79d 2018-02-12 stsp free(pid->id);
886 59ece79d 2018-02-12 stsp free(commit->tree_id);
887 d1cda826 2017-11-06 stsp free(commit->author);
888 d1cda826 2017-11-06 stsp free(commit->committer);
889 d1cda826 2017-11-06 stsp free(commit->logmsg);
890 d1cda826 2017-11-06 stsp free(commit);
893 0ffeb3c2 2017-11-26 stsp static const struct got_error *
894 e033d803 2018-04-23 stsp read_tree_object(struct got_tree_object **tree, struct got_object *obj, FILE *f)
896 0ffeb3c2 2017-11-26 stsp const struct got_error *err = NULL;
897 0ffeb3c2 2017-11-26 stsp size_t len;
898 eb651edf 2018-02-11 stsp uint8_t *p;
900 eb651edf 2018-02-11 stsp if (obj->flags & GOT_OBJ_FLAG_PACKED)
901 eb651edf 2018-02-11 stsp err = read_to_mem(&p, &len, f);
903 eb651edf 2018-02-11 stsp err = got_inflate_to_mem(&p, &len, f);
905 0ffeb3c2 2017-11-26 stsp return err;
907 0ffeb3c2 2017-11-26 stsp if (len < obj->hdrlen + obj->size) {
908 0ffeb3c2 2017-11-26 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
912 0ffeb3c2 2017-11-26 stsp /* Skip object header. */
913 0ffeb3c2 2017-11-26 stsp len -= obj->hdrlen;
914 e033d803 2018-04-23 stsp err = parse_tree_object(tree, p + obj->hdrlen, len);
917 e033d803 2018-04-23 stsp return err;
920 e033d803 2018-04-23 stsp static void
921 e033d803 2018-04-23 stsp read_tree_object_privsep_child(struct got_object *obj, int obj_fd,
922 e033d803 2018-04-23 stsp int imsg_fds[2])
924 e033d803 2018-04-23 stsp const struct got_error *err = NULL;
925 e033d803 2018-04-23 stsp struct got_tree_object *tree = NULL;
926 e033d803 2018-04-23 stsp struct imsgbuf ibuf;
927 e033d803 2018-04-23 stsp FILE *f = NULL;
928 e033d803 2018-04-23 stsp int status = 0;
930 be37c2e6 2018-04-24 stsp setproctitle("read tree object");
931 e033d803 2018-04-23 stsp close(imsg_fds[0]);
932 e033d803 2018-04-23 stsp imsg_init(&ibuf, imsg_fds[1]);
934 e033d803 2018-04-23 stsp /* revoke access to most system calls */
935 e033d803 2018-04-23 stsp if (pledge("stdio", NULL) == -1) {
936 e033d803 2018-04-23 stsp err = got_error_from_errno();
940 e033d803 2018-04-23 stsp f = fdopen(obj_fd, "rb");
941 e033d803 2018-04-23 stsp if (f == NULL) {
942 e033d803 2018-04-23 stsp err = got_error_from_errno();
943 e033d803 2018-04-23 stsp close(obj_fd);
947 e033d803 2018-04-23 stsp err = read_tree_object(&tree, obj, f);
951 068fd2bf 2018-04-24 stsp err = got_privsep_send_tree(&ibuf, tree);
954 e033d803 2018-04-23 stsp got_object_tree_close(tree);
956 e033d803 2018-04-23 stsp got_privsep_send_error(&ibuf, err);
957 e033d803 2018-04-23 stsp status = 1;
961 e033d803 2018-04-23 stsp imsg_clear(&ibuf);
962 e033d803 2018-04-23 stsp close(imsg_fds[1]);
963 e033d803 2018-04-23 stsp _exit(status);
966 e033d803 2018-04-23 stsp static const struct got_error *
967 e033d803 2018-04-23 stsp read_tree_object_privsep(struct got_tree_object **tree, struct got_object *obj,
970 b419fc47 2018-04-26 stsp const struct got_error *err = NULL, *err_child = NULL;
971 e033d803 2018-04-23 stsp struct imsgbuf parent_ibuf;
972 e033d803 2018-04-23 stsp int imsg_fds[2];
975 e033d803 2018-04-23 stsp if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, imsg_fds) == -1)
976 e033d803 2018-04-23 stsp return got_error_from_errno();
978 e033d803 2018-04-23 stsp pid = fork();
979 e033d803 2018-04-23 stsp if (pid == -1)
980 e033d803 2018-04-23 stsp return got_error_from_errno();
981 e033d803 2018-04-23 stsp else if (pid == 0) {
982 e033d803 2018-04-23 stsp read_tree_object_privsep_child(obj, fd, imsg_fds);
983 e033d803 2018-04-23 stsp /* not reached */
986 e033d803 2018-04-23 stsp close(imsg_fds[1]);
987 e033d803 2018-04-23 stsp imsg_init(&parent_ibuf, imsg_fds[0]);
988 068fd2bf 2018-04-24 stsp err = got_privsep_recv_tree(tree, &parent_ibuf);
989 e033d803 2018-04-23 stsp imsg_clear(&parent_ibuf);
990 b419fc47 2018-04-26 stsp err_child = wait_for_child(pid);
991 e033d803 2018-04-23 stsp close(imsg_fds[0]);
992 b419fc47 2018-04-26 stsp return err ? err : err_child;
995 0ffeb3c2 2017-11-26 stsp const struct got_error *
996 0ffeb3c2 2017-11-26 stsp got_object_tree_open(struct got_tree_object **tree,
997 0ffeb3c2 2017-11-26 stsp struct got_repository *repo, struct got_object *obj)
999 0ffeb3c2 2017-11-26 stsp const struct got_error *err = NULL;
1001 0ffeb3c2 2017-11-26 stsp if (obj->type != GOT_OBJ_TYPE_TREE)
1002 0ffeb3c2 2017-11-26 stsp return got_error(GOT_ERR_OBJ_TYPE);
1004 e0ab43e7 2018-03-16 stsp if (obj->flags & GOT_OBJ_FLAG_PACKED) {
1005 e0ab43e7 2018-03-16 stsp uint8_t *buf;
1006 e0ab43e7 2018-03-16 stsp size_t len;
1007 e0ab43e7 2018-03-16 stsp err = got_packfile_extract_object_to_mem(&buf, &len, obj, repo);
1009 e0ab43e7 2018-03-16 stsp return err;
1010 b29656e2 2018-03-16 stsp obj->size = len;
1011 e033d803 2018-04-23 stsp err = parse_tree_object(tree, buf, len);
1012 e0ab43e7 2018-03-16 stsp free(buf);
1015 d5003b79 2018-04-22 stsp err = open_loose_object(&fd, obj, repo);
1017 e0ab43e7 2018-03-16 stsp return err;
1018 e033d803 2018-04-23 stsp err = read_tree_object_privsep(tree, obj, fd);
1019 d5003b79 2018-04-22 stsp close(fd);
1021 0ffeb3c2 2017-11-26 stsp return err;
1025 0ffeb3c2 2017-11-26 stsp got_object_tree_close(struct got_tree_object *tree)
1027 f715ca7f 2017-11-27 stsp struct got_tree_entry *te;
1029 f715ca7f 2017-11-27 stsp while (!SIMPLEQ_EMPTY(&tree->entries)) {
1030 f715ca7f 2017-11-27 stsp te = SIMPLEQ_FIRST(&tree->entries);
1031 f715ca7f 2017-11-27 stsp SIMPLEQ_REMOVE_HEAD(&tree->entries, entry);
1032 f715ca7f 2017-11-27 stsp tree_entry_close(te);
1035 f715ca7f 2017-11-27 stsp free(tree);
1038 ff6b18f8 2018-04-24 stsp static const struct got_error *
1039 ff6b18f8 2018-04-24 stsp read_blob_object_privsep_child(int outfd, int infd, int imsg_fds[2])
1041 ff6b18f8 2018-04-24 stsp const struct got_error *err = NULL;
1042 ff6b18f8 2018-04-24 stsp struct imsgbuf ibuf;
1043 ff6b18f8 2018-04-24 stsp int status = 0;
1044 2967a784 2018-04-24 stsp size_t size;
1045 8b2180d4 2018-04-26 stsp FILE *infile = NULL;
1047 be37c2e6 2018-04-24 stsp setproctitle("read blob object");
1048 ff6b18f8 2018-04-24 stsp close(imsg_fds[0]);
1049 ff6b18f8 2018-04-24 stsp imsg_init(&ibuf, imsg_fds[1]);
1051 ff6b18f8 2018-04-24 stsp /* revoke access to most system calls */
1052 ff6b18f8 2018-04-24 stsp if (pledge("stdio", NULL) == -1) {
1053 ff6b18f8 2018-04-24 stsp err = got_error_from_errno();
1054 ff6b18f8 2018-04-24 stsp goto done;
1057 8b2180d4 2018-04-26 stsp infile = fdopen(infd, "rb");
1058 8b2180d4 2018-04-26 stsp if (infile == NULL) {
1059 8b2180d4 2018-04-26 stsp err = got_error_from_errno();
1060 8b2180d4 2018-04-26 stsp close(infd);
1061 8b2180d4 2018-04-26 stsp goto done;
1063 8b2180d4 2018-04-26 stsp err = got_inflate_to_fd(&size, infile, outfd);
1064 8b2180d4 2018-04-26 stsp fclose(infile);
1066 ff6b18f8 2018-04-24 stsp goto done;
1068 2967a784 2018-04-24 stsp err = got_privsep_send_blob(&ibuf, size);
1070 ff6b18f8 2018-04-24 stsp if (err) {
1071 ff6b18f8 2018-04-24 stsp got_privsep_send_error(&ibuf, err);
1072 ff6b18f8 2018-04-24 stsp status = 1;
1074 ff6b18f8 2018-04-24 stsp close(outfd);
1075 ff6b18f8 2018-04-24 stsp imsg_clear(&ibuf);
1076 ff6b18f8 2018-04-24 stsp close(imsg_fds[1]);
1077 ff6b18f8 2018-04-24 stsp _exit(status);
1080 ff6b18f8 2018-04-24 stsp static const struct got_error *
1081 2967a784 2018-04-24 stsp read_blob_object_privsep(size_t *size, int outfd, int infd)
1083 ff6b18f8 2018-04-24 stsp struct imsgbuf parent_ibuf;
1084 ff6b18f8 2018-04-24 stsp int imsg_fds[2];
1085 b419fc47 2018-04-26 stsp const struct got_error *err = NULL, *err_child = NULL;
1086 ff6b18f8 2018-04-24 stsp pid_t pid;
1088 ff6b18f8 2018-04-24 stsp if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, imsg_fds) == -1)
1089 ff6b18f8 2018-04-24 stsp return got_error_from_errno();
1091 ff6b18f8 2018-04-24 stsp pid = fork();
1092 ff6b18f8 2018-04-24 stsp if (pid == -1)
1093 ff6b18f8 2018-04-24 stsp return got_error_from_errno();
1094 ff6b18f8 2018-04-24 stsp else if (pid == 0) {
1095 ff6b18f8 2018-04-24 stsp read_blob_object_privsep_child(outfd, infd, imsg_fds);
1096 ff6b18f8 2018-04-24 stsp /* not reached */
1099 ff6b18f8 2018-04-24 stsp close(imsg_fds[1]);
1100 ff6b18f8 2018-04-24 stsp imsg_init(&parent_ibuf, imsg_fds[0]);
1101 2967a784 2018-04-24 stsp err = got_privsep_recv_blob(size, &parent_ibuf);
1102 ff6b18f8 2018-04-24 stsp imsg_clear(&parent_ibuf);
1103 b419fc47 2018-04-26 stsp err_child = wait_for_child(pid);
1104 ff6b18f8 2018-04-24 stsp close(imsg_fds[0]);
1105 ff6b18f8 2018-04-24 stsp if (lseek(outfd, SEEK_SET, 0) == -1)
1106 ff6b18f8 2018-04-24 stsp err = got_error_from_errno();
1107 b419fc47 2018-04-26 stsp return err ? err : err_child;
1110 68482ea3 2017-11-27 stsp const struct got_error *
1111 68482ea3 2017-11-27 stsp got_object_blob_open(struct got_blob_object **blob,
1112 68482ea3 2017-11-27 stsp struct got_repository *repo, struct got_object *obj, size_t blocksize)
1114 68482ea3 2017-11-27 stsp const struct got_error *err = NULL;
1116 68482ea3 2017-11-27 stsp if (obj->type != GOT_OBJ_TYPE_BLOB)
1117 68482ea3 2017-11-27 stsp return got_error(GOT_ERR_OBJ_TYPE);
1119 7d283eee 2017-11-29 stsp if (blocksize < obj->hdrlen)
1120 7d283eee 2017-11-29 stsp return got_error(GOT_ERR_NO_SPACE);
1122 68482ea3 2017-11-27 stsp *blob = calloc(1, sizeof(**blob));
1123 4558fcd4 2018-01-14 stsp if (*blob == NULL)
1124 0a585a0d 2018-03-17 stsp return got_error_from_errno();
1126 15c8b0e6 2018-04-24 stsp (*blob)->read_buf = calloc(1, blocksize);
1127 15c8b0e6 2018-04-24 stsp if ((*blob)->read_buf == NULL) {
1128 15c8b0e6 2018-04-24 stsp err = got_error_from_errno();
1129 c7254d79 2018-04-24 stsp goto done;
1131 eb651edf 2018-02-11 stsp if (obj->flags & GOT_OBJ_FLAG_PACKED) {
1132 eb651edf 2018-02-11 stsp err = got_packfile_extract_object(&((*blob)->f), obj, repo);
1134 c7254d79 2018-04-24 stsp goto done;
1136 3aca5731 2018-04-24 stsp int infd, outfd;
1137 2967a784 2018-04-24 stsp size_t size;
1138 2967a784 2018-04-24 stsp struct stat sb;
1140 3aca5731 2018-04-24 stsp err = open_loose_object(&infd, obj, repo);
1142 c7254d79 2018-04-24 stsp goto done;
1145 3aca5731 2018-04-24 stsp outfd = got_opentempfd();
1146 3aca5731 2018-04-24 stsp if (outfd == -1) {
1147 3aca5731 2018-04-24 stsp err = got_error_from_errno();
1148 3aca5731 2018-04-24 stsp close(infd);
1149 3aca5731 2018-04-24 stsp goto done;
1152 2967a784 2018-04-24 stsp err = read_blob_object_privsep(&size, outfd, infd);
1153 3aca5731 2018-04-24 stsp close(infd);
1155 c7254d79 2018-04-24 stsp goto done;
1157 2967a784 2018-04-24 stsp if (size != obj->hdrlen + obj->size) {
1158 1a6b3ab7 2018-04-24 stsp err = got_error(GOT_ERR_PRIVSEP_LEN);
1159 2967a784 2018-04-24 stsp close(outfd);
1160 2967a784 2018-04-24 stsp goto done;
1163 2967a784 2018-04-24 stsp if (fstat(outfd, &sb) == -1) {
1164 2967a784 2018-04-24 stsp err = got_error_from_errno();
1165 2967a784 2018-04-24 stsp close(outfd);
1166 2967a784 2018-04-24 stsp goto done;
1169 2967a784 2018-04-24 stsp if (sb.st_size != size) {
1170 2967a784 2018-04-24 stsp err = got_error(GOT_ERR_PRIVSEP_LEN);
1171 2967a784 2018-04-24 stsp close(outfd);
1172 2967a784 2018-04-24 stsp goto done;
1175 3aca5731 2018-04-24 stsp (*blob)->f = fdopen(outfd, "rb");
1176 3aca5731 2018-04-24 stsp if ((*blob)->f == NULL) {
1177 3aca5731 2018-04-24 stsp err = got_error_from_errno();
1178 3aca5731 2018-04-24 stsp close(outfd);
1179 3aca5731 2018-04-24 stsp goto done;
1183 7d283eee 2017-11-29 stsp (*blob)->hdrlen = obj->hdrlen;
1184 eb651edf 2018-02-11 stsp (*blob)->blocksize = blocksize;
1185 f78b0693 2017-11-29 stsp memcpy(&(*blob)->id.sha1, obj->id.sha1, SHA1_DIGEST_LENGTH);
1188 c7254d79 2018-04-24 stsp if (err && *blob) {
1189 c7254d79 2018-04-24 stsp if ((*blob)->f)
1190 c7254d79 2018-04-24 stsp fclose((*blob)->f);
1191 c7254d79 2018-04-24 stsp free((*blob)->read_buf);
1192 c7254d79 2018-04-24 stsp free(*blob);
1193 c7254d79 2018-04-24 stsp *blob = NULL;
1195 68482ea3 2017-11-27 stsp return err;
1199 68482ea3 2017-11-27 stsp got_object_blob_close(struct got_blob_object *blob)
1201 15c8b0e6 2018-04-24 stsp free(blob->read_buf);
1202 68482ea3 2017-11-27 stsp fclose(blob->f);
1203 68482ea3 2017-11-27 stsp free(blob);
1207 f934cf2c 2018-02-12 stsp got_object_blob_id_str(struct got_blob_object *blob, char *buf, size_t size)
1209 f934cf2c 2018-02-12 stsp return got_sha1_digest_to_str(blob->id.sha1, buf, size);
1213 f934cf2c 2018-02-12 stsp got_object_blob_get_hdrlen(struct got_blob_object *blob)
1215 f934cf2c 2018-02-12 stsp return blob->hdrlen;
1218 f934cf2c 2018-02-12 stsp const uint8_t *
1219 f934cf2c 2018-02-12 stsp got_object_blob_get_read_buf(struct got_blob_object *blob)
1221 f934cf2c 2018-02-12 stsp return blob->read_buf;
1224 68482ea3 2017-11-27 stsp const struct got_error *
1225 eb651edf 2018-02-11 stsp got_object_blob_read_block(size_t *outlenp, struct got_blob_object *blob)
1229 eb651edf 2018-02-11 stsp n = fread(blob->read_buf, 1, blob->blocksize, blob->f);
1230 eb651edf 2018-02-11 stsp if (n == 0 && ferror(blob->f))
1231 eb651edf 2018-02-11 stsp return got_ferror(blob->f, GOT_ERR_IO);
1232 eb651edf 2018-02-11 stsp *outlenp = n;
1233 eb651edf 2018-02-11 stsp return NULL;
