Bug Summary

File:tog/../lib/repository.c
Warning:line 720, column 18
Access to field 'pack_cache_size' results in a dereference of a null pointer (loaded from variable 'repo')

Annotated Source Code

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clang -cc1 -cc1 -triple amd64-unknown-openbsd6.9 -analyze -disable-free -disable-llvm-verifier -discard-value-names -main-file-name repository.c -analyzer-store=region -analyzer-opt-analyze-nested-blocks -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -analyzer-checker=deadcode -analyzer-checker=security.insecureAPI.UncheckedReturn -analyzer-checker=security.insecureAPI.getpw -analyzer-checker=security.insecureAPI.gets -analyzer-checker=security.insecureAPI.mktemp -analyzer-checker=security.insecureAPI.mkstemp -analyzer-checker=security.insecureAPI.vfork -analyzer-checker=nullability.NullPassedToNonnull -analyzer-checker=nullability.NullReturnedFromNonnull -analyzer-output plist -w -setup-static-analyzer -mrelocation-model pic -pic-level 1 -pic-is-pie -mframe-pointer=all -relaxed-aliasing -fno-rounding-math -mconstructor-aliases -munwind-tables -target-cpu x86-64 -target-feature +retpoline-indirect-calls -target-feature +retpoline-indirect-branches -fno-split-dwarf-inlining -debugger-tuning=gdb -resource-dir /usr/local/lib/clang/11.1.0 -I /home/ben/Projects/got/tog/../include -I /home/ben/Projects/got/tog/../lib -D GOT_LIBEXECDIR=/home/ben/bin -D GOT_VERSION=0.53-current -internal-isystem /usr/local/lib/clang/11.1.0/include -internal-externc-isystem /usr/include -O0 -fdebug-compilation-dir /home/ben/Projects/got/tog/obj -ferror-limit 19 -fwrapv -D_RET_PROTECTOR -ret-protector -fgnuc-version=4.2.1 -fno-builtin-malloc -fno-builtin-calloc -fno-builtin-realloc -fno-builtin-valloc -fno-builtin-free -fno-builtin-strdup -fno-builtin-strndup -analyzer-output=html -faddrsig -o /home/ben/Projects/got/scan/2021-05-28-230913-68537-1 -x c /home/ben/Projects/got/tog/../lib/repository.c
1/*
2 * Copyright (c) 2018, 2019, 2020 Stefan Sperling <stsp@openbsd.org>
3 *
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.
7 *
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.
15 */
16
17#include <sys/types.h>
18#include <sys/queue.h>
19#include <sys/uio.h>
20#include <sys/socket.h>
21#include <sys/stat.h>
22#include <sys/mman.h>
23#include <sys/resource.h>
24
25#include <ctype.h>
26#include <endian.h>
27#include <fcntl.h>
28#include <fnmatch.h>
29#include <limits.h>
30#include <dirent.h>
31#include <stdlib.h>
32#include <stdio.h>
33#include <sha1.h>
34#include <string.h>
35#include <time.h>
36#include <unistd.h>
37#include <zlib.h>
38#include <errno(*__errno()).h>
39#include <libgen.h>
40#include <stdint.h>
41#include <imsg.h>
42#include <uuid.h>
43
44#include "got_error.h"
45#include "got_reference.h"
46#include "got_repository.h"
47#include "got_path.h"
48#include "got_cancel.h"
49#include "got_object.h"
50
51#include "got_lib_delta.h"
52#include "got_lib_inflate.h"
53#include "got_lib_object.h"
54#include "got_lib_object_parse.h"
55#include "got_lib_object_create.h"
56#include "got_lib_pack.h"
57#include "got_lib_privsep.h"
58#include "got_lib_sha1.h"
59#include "got_lib_object_cache.h"
60#include "got_lib_repository.h"
61#include "got_lib_gotconfig.h"
62
63#ifndef nitems
64#define nitems(_a)(sizeof(_a) / sizeof((_a)[0])) (sizeof(_a) / sizeof((_a)[0]))
65#endif
66
67const char *
68got_repo_get_path(struct got_repository *repo)
69{
70 return repo->path;
71}
72
73const char *
74got_repo_get_path_git_dir(struct got_repository *repo)
75{
76 return repo->path_git_dir;
77}
78
79int
80got_repo_get_fd(struct got_repository *repo)
81{
82 return repo->gitdir_fd;
83}
84
85const char *
86got_repo_get_gitconfig_author_name(struct got_repository *repo)
87{
88 return repo->gitconfig_author_name;
89}
90
91const char *
92got_repo_get_gitconfig_author_email(struct got_repository *repo)
93{
94 return repo->gitconfig_author_email;
95}
96
97const char *
98got_repo_get_global_gitconfig_author_name(struct got_repository *repo)
99{
100 return repo->global_gitconfig_author_name;
101}
102
103const char *
104got_repo_get_global_gitconfig_author_email(struct got_repository *repo)
105{
106 return repo->global_gitconfig_author_email;
107}
108
109const char *
110got_repo_get_gitconfig_owner(struct got_repository *repo)
111{
112 return repo->gitconfig_owner;
113}
114
115int
116got_repo_is_bare(struct got_repository *repo)
117{
118 return (strcmp(repo->path, repo->path_git_dir) == 0);
119}
120
121static char *
122get_path_git_child(struct got_repository *repo, const char *basename)
123{
124 char *path_child;
125
126 if (asprintf(&path_child, "%s/%s", repo->path_git_dir,
127 basename) == -1)
128 return NULL((void *)0);
129
130 return path_child;
131}
132
133char *
134got_repo_get_path_objects(struct got_repository *repo)
135{
136 return get_path_git_child(repo, GOT_OBJECTS_DIR"objects");
137}
138
139char *
140got_repo_get_path_objects_pack(struct got_repository *repo)
141{
142 return get_path_git_child(repo, GOT_OBJECTS_PACK_DIR"objects/pack");
143}
144
145char *
146got_repo_get_path_refs(struct got_repository *repo)
147{
148 return get_path_git_child(repo, GOT_REFS_DIR"refs");
149}
150
151char *
152got_repo_get_path_packed_refs(struct got_repository *repo)
153{
154 return get_path_git_child(repo, GOT_PACKED_REFS_FILE"packed-refs");
155}
156
157static char *
158get_path_head(struct got_repository *repo)
159{
160 return get_path_git_child(repo, GOT_HEAD_FILE"HEAD");
161}
162
163char *
164got_repo_get_path_gitconfig(struct got_repository *repo)
165{
166 return get_path_git_child(repo, GOT_GITCONFIG"config");
167}
168
169char *
170got_repo_get_path_gotconfig(struct got_repository *repo)
171{
172 return get_path_git_child(repo, GOT_GOTCONFIG_FILENAME"got.conf");
173}
174
175const struct got_gotconfig *
176got_repo_get_gotconfig(struct got_repository *repo)
177{
178 return repo->gotconfig;
179}
180
181void
182got_repo_get_gitconfig_remotes(int *nremotes,
183 const struct got_remote_repo **remotes, struct got_repository *repo)
184{
185 *nremotes = repo->ngitconfig_remotes;
186 *remotes = repo->gitconfig_remotes;
187}
188
189static int
190is_git_repo(struct got_repository *repo)
191{
192 const char *path_git = got_repo_get_path_git_dir(repo);
193 char *path_objects = got_repo_get_path_objects(repo);
194 char *path_refs = got_repo_get_path_refs(repo);
195 char *path_head = get_path_head(repo);
196 int ret = 0;
197 struct stat sb;
198 struct got_reference *head_ref;
199
200 if (lstat(path_git, &sb) == -1)
201 goto done;
202 if (!S_ISDIR(sb.st_mode)((sb.st_mode & 0170000) == 0040000))
203 goto done;
204
205 if (lstat(path_objects, &sb) == -1)
206 goto done;
207 if (!S_ISDIR(sb.st_mode)((sb.st_mode & 0170000) == 0040000))
208 goto done;
209
210 if (lstat(path_refs, &sb) == -1)
211 goto done;
212 if (!S_ISDIR(sb.st_mode)((sb.st_mode & 0170000) == 0040000))
213 goto done;
214
215 if (lstat(path_head, &sb) == -1)
216 goto done;
217 if (!S_ISREG(sb.st_mode)((sb.st_mode & 0170000) == 0100000))
218 goto done;
219
220 /* Check if the HEAD reference can be opened. */
221 if (got_ref_open(&head_ref, repo, GOT_REF_HEAD"HEAD", 0) != NULL((void *)0))
222 goto done;
223 got_ref_close(head_ref);
224
225 ret = 1;
226done:
227 free(path_objects);
228 free(path_refs);
229 free(path_head);
230 return ret;
231
232}
233
234const struct got_error *
235got_repo_cache_object(struct got_repository *repo, struct got_object_id *id,
236 struct got_object *obj)
237{
238#ifndef GOT_NO_OBJ_CACHE
239 const struct got_error *err = NULL((void *)0);
240 err = got_object_cache_add(&repo->objcache, id, obj);
241 if (err) {
242 if (err->code == GOT_ERR_OBJ_EXISTS43 ||
243 err->code == GOT_ERR_OBJ_TOO_LARGE78)
244 err = NULL((void *)0);
245 return err;
246 }
247 obj->refcnt++;
248#endif
249 return NULL((void *)0);
250}
251
252struct got_object *
253got_repo_get_cached_object(struct got_repository *repo,
254 struct got_object_id *id)
255{
256 return (struct got_object *)got_object_cache_get(&repo->objcache, id);
257}
258
259const struct got_error *
260got_repo_cache_tree(struct got_repository *repo, struct got_object_id *id,
261 struct got_tree_object *tree)
262{
263#ifndef GOT_NO_OBJ_CACHE
264 const struct got_error *err = NULL((void *)0);
265 err = got_object_cache_add(&repo->treecache, id, tree);
266 if (err) {
267 if (err->code == GOT_ERR_OBJ_EXISTS43 ||
268 err->code == GOT_ERR_OBJ_TOO_LARGE78)
269 err = NULL((void *)0);
270 return err;
271 }
272 tree->refcnt++;
273#endif
274 return NULL((void *)0);
275}
276
277struct got_tree_object *
278got_repo_get_cached_tree(struct got_repository *repo,
279 struct got_object_id *id)
280{
281 return (struct got_tree_object *)got_object_cache_get(
282 &repo->treecache, id);
283}
284
285const struct got_error *
286got_repo_cache_commit(struct got_repository *repo, struct got_object_id *id,
287 struct got_commit_object *commit)
288{
289#ifndef GOT_NO_OBJ_CACHE
290 const struct got_error *err = NULL((void *)0);
291 err = got_object_cache_add(&repo->commitcache, id, commit);
292 if (err) {
293 if (err->code == GOT_ERR_OBJ_EXISTS43 ||
294 err->code == GOT_ERR_OBJ_TOO_LARGE78)
295 err = NULL((void *)0);
296 return err;
297 }
298 commit->refcnt++;
299#endif
300 return NULL((void *)0);
301}
302
303struct got_commit_object *
304got_repo_get_cached_commit(struct got_repository *repo,
305 struct got_object_id *id)
306{
307 return (struct got_commit_object *)got_object_cache_get(
308 &repo->commitcache, id);
309}
310
311const struct got_error *
312got_repo_cache_tag(struct got_repository *repo, struct got_object_id *id,
313 struct got_tag_object *tag)
314{
315#ifndef GOT_NO_OBJ_CACHE
316 const struct got_error *err = NULL((void *)0);
317 err = got_object_cache_add(&repo->tagcache, id, tag);
318 if (err) {
319 if (err->code == GOT_ERR_OBJ_EXISTS43 ||
320 err->code == GOT_ERR_OBJ_TOO_LARGE78)
321 err = NULL((void *)0);
322 return err;
323 }
324 tag->refcnt++;
325#endif
326 return NULL((void *)0);
327}
328
329struct got_tag_object *
330got_repo_get_cached_tag(struct got_repository *repo, struct got_object_id *id)
331{
332 return (struct got_tag_object *)got_object_cache_get(
333 &repo->tagcache, id);
334}
335
336const struct got_error *
337open_repo(struct got_repository *repo, const char *path)
338{
339 const struct got_error *err = NULL((void *)0);
340
341 repo->gitdir_fd = -1;
342
343 /* bare git repository? */
344 repo->path_git_dir = strdup(path);
345 if (repo->path_git_dir == NULL((void *)0))
346 return got_error_from_errno("strdup");
347 if (is_git_repo(repo)) {
348 repo->path = strdup(repo->path_git_dir);
349 if (repo->path == NULL((void *)0)) {
350 err = got_error_from_errno("strdup");
351 goto done;
352 }
353 repo->gitdir_fd = open(repo->path_git_dir, O_DIRECTORY0x20000);
354 if (repo->gitdir_fd == -1) {
355 err = got_error_from_errno2("open",
356 repo->path_git_dir);
357 goto done;
358 }
359 return NULL((void *)0);
360 }
361
362 /* git repository with working tree? */
363 free(repo->path_git_dir);
364 repo->path_git_dir = NULL((void *)0);
365 if (asprintf(&repo->path_git_dir, "%s/%s", path, GOT_GIT_DIR".git") == -1) {
366 err = got_error_from_errno("asprintf");
367 goto done;
368 }
369 if (is_git_repo(repo)) {
370 repo->path = strdup(path);
371 if (repo->path == NULL((void *)0)) {
372 err = got_error_from_errno("strdup");
373 goto done;
374 }
375 repo->gitdir_fd = open(repo->path_git_dir, O_DIRECTORY0x20000);
376 if (repo->gitdir_fd == -1) {
377 err = got_error_from_errno2("open",
378 repo->path_git_dir);
379 goto done;
380 }
381 return NULL((void *)0);
382 }
383
384 err = got_error(GOT_ERR_NOT_GIT_REPO2);
385done:
386 if (err) {
387 free(repo->path);
388 repo->path = NULL((void *)0);
389 free(repo->path_git_dir);
390 repo->path_git_dir = NULL((void *)0);
391 if (repo->gitdir_fd != -1)
392 close(repo->gitdir_fd);
393 repo->gitdir_fd = -1;
394
395 }
396 return err;
397}
398
399static const struct got_error *
400parse_gitconfig_file(int *gitconfig_repository_format_version,
401 char **gitconfig_author_name, char **gitconfig_author_email,
402 struct got_remote_repo **remotes, int *nremotes,
403 char **gitconfig_owner, char ***extensions, int *nextensions,
404 const char *gitconfig_path)
405{
406 const struct got_error *err = NULL((void *)0), *child_err = NULL((void *)0);
407 int fd = -1;
408 int imsg_fds[2] = { -1, -1 };
409 pid_t pid;
410 struct imsgbuf *ibuf;
411
412 *gitconfig_repository_format_version = 0;
413 if (extensions)
414 *extensions = NULL((void *)0);
415 if (nextensions)
416 *nextensions = 0;
417 *gitconfig_author_name = NULL((void *)0);
418 *gitconfig_author_email = NULL((void *)0);
419 if (remotes)
420 *remotes = NULL((void *)0);
421 if (nremotes)
422 *nremotes = 0;
423 if (gitconfig_owner)
424 *gitconfig_owner = NULL((void *)0);
425
426 fd = open(gitconfig_path, O_RDONLY0x0000);
427 if (fd == -1) {
428 if (errno(*__errno()) == ENOENT2)
429 return NULL((void *)0);
430 return got_error_from_errno2("open", gitconfig_path);
431 }
432
433 ibuf = calloc(1, sizeof(*ibuf));
434 if (ibuf == NULL((void *)0)) {
435 err = got_error_from_errno("calloc");
436 goto done;
437 }
438
439 if (socketpair(AF_UNIX1, SOCK_STREAM1, PF_UNSPEC0, imsg_fds) == -1) {
440 err = got_error_from_errno("socketpair");
441 goto done;
442 }
443
444 pid = fork();
445 if (pid == -1) {
446 err = got_error_from_errno("fork");
447 goto done;
448 } else if (pid == 0) {
449 got_privsep_exec_child(imsg_fds, GOT_PATH_PROG_READ_GITCONFIG"/home/ben/bin" "/" "got-read-gitconfig",
450 gitconfig_path);
451 /* not reached */
452 }
453
454 if (close(imsg_fds[1]) == -1) {
455 err = got_error_from_errno("close");
456 goto done;
457 }
458 imsg_fds[1] = -1;
459 imsg_init(ibuf, imsg_fds[0]);
460
461 err = got_privsep_send_gitconfig_parse_req(ibuf, fd);
462 if (err)
463 goto done;
464 fd = -1;
465
466 err = got_privsep_send_gitconfig_repository_format_version_req(ibuf);
467 if (err)
468 goto done;
469
470 err = got_privsep_recv_gitconfig_int(
471 gitconfig_repository_format_version, ibuf);
472 if (err)
473 goto done;
474
475 if (extensions && nextensions) {
476 err = got_privsep_send_gitconfig_repository_extensions_req(
477 ibuf);
478 if (err)
479 goto done;
480 err = got_privsep_recv_gitconfig_int(nextensions, ibuf);
481 if (err)
482 goto done;
483 if (*nextensions > 0) {
484 int i;
485 *extensions = calloc(*nextensions, sizeof(char *));
486 if (*extensions == NULL((void *)0)) {
487 err = got_error_from_errno("calloc");
488 goto done;
489 }
490 for (i = 0; i < *nextensions; i++) {
491 char *ext;
492 err = got_privsep_recv_gitconfig_str(&ext,
493 ibuf);
494 if (err)
495 goto done;
496 (*extensions)[i] = ext;
497 }
498 }
499 }
500
501 err = got_privsep_send_gitconfig_author_name_req(ibuf);
502 if (err)
503 goto done;
504
505 err = got_privsep_recv_gitconfig_str(gitconfig_author_name, ibuf);
506 if (err)
507 goto done;
508
509 err = got_privsep_send_gitconfig_author_email_req(ibuf);
510 if (err)
511 goto done;
512
513 err = got_privsep_recv_gitconfig_str(gitconfig_author_email, ibuf);
514 if (err)
515 goto done;
516
517 if (remotes && nremotes) {
518 err = got_privsep_send_gitconfig_remotes_req(ibuf);
519 if (err)
520 goto done;
521
522 err = got_privsep_recv_gitconfig_remotes(remotes,
523 nremotes, ibuf);
524 if (err)
525 goto done;
526 }
527
528 if (gitconfig_owner) {
529 err = got_privsep_send_gitconfig_owner_req(ibuf);
530 if (err)
531 goto done;
532 err = got_privsep_recv_gitconfig_str(gitconfig_owner, ibuf);
533 if (err)
534 goto done;
535 }
536
537 imsg_clear(ibuf);
538 err = got_privsep_send_stop(imsg_fds[0]);
539 child_err = got_privsep_wait_for_child(pid);
540 if (child_err && err == NULL((void *)0))
541 err = child_err;
542done:
543 if (imsg_fds[0] != -1 && close(imsg_fds[0]) == -1 && err == NULL((void *)0))
544 err = got_error_from_errno("close");
545 if (imsg_fds[1] != -1 && close(imsg_fds[1]) == -1 && err == NULL((void *)0))
546 err = got_error_from_errno("close");
547 if (fd != -1 && close(fd) == -1 && err == NULL((void *)0))
548 err = got_error_from_errno2("close", gitconfig_path);
549 free(ibuf);
550 return err;
551}
552
553static const struct got_error *
554read_gitconfig(struct got_repository *repo, const char *global_gitconfig_path)
555{
556 const struct got_error *err = NULL((void *)0);
557 char *repo_gitconfig_path = NULL((void *)0);
558
559 if (global_gitconfig_path) {
560 /* Read settings from ~/.gitconfig. */
561 int dummy_repo_version;
562 err = parse_gitconfig_file(&dummy_repo_version,
563 &repo->global_gitconfig_author_name,
564 &repo->global_gitconfig_author_email,
565 NULL((void *)0), NULL((void *)0), NULL((void *)0), NULL((void *)0), NULL((void *)0), global_gitconfig_path);
566 if (err)
567 return err;
568 }
569
570 /* Read repository's .git/config file. */
571 repo_gitconfig_path = got_repo_get_path_gitconfig(repo);
572 if (repo_gitconfig_path == NULL((void *)0))
573 return got_error_from_errno("got_repo_get_path_gitconfig");
574
575 err = parse_gitconfig_file(&repo->gitconfig_repository_format_version,
576 &repo->gitconfig_author_name, &repo->gitconfig_author_email,
577 &repo->gitconfig_remotes, &repo->ngitconfig_remotes,
578 &repo->gitconfig_owner, &repo->extensions, &repo->nextensions,
579 repo_gitconfig_path);
580 if (err)
581 goto done;
582done:
583 free(repo_gitconfig_path);
584 return err;
585}
586
587static const struct got_error *
588read_gotconfig(struct got_repository *repo)
589{
590 const struct got_error *err = NULL((void *)0);
591 char *gotconfig_path;
592
593 gotconfig_path = got_repo_get_path_gotconfig(repo);
594 if (gotconfig_path == NULL((void *)0))
595 return got_error_from_errno("got_repo_get_path_gotconfig");
596
597 err = got_gotconfig_read(&repo->gotconfig, gotconfig_path);
598 free(gotconfig_path);
599 return err;
600}
601
602/* Supported repository format extensions. */
603static const char *repo_extensions[] = {
604 "noop", /* Got supports repository format version 1. */
605 "preciousObjects", /* Got has no garbage collection yet. */
606 "worktreeConfig", /* Got does not care about Git work trees. */
607};
608
609const struct got_error *
610got_repo_open(struct got_repository **repop, const char *path,
611 const char *global_gitconfig_path)
612{
613 struct got_repository *repo = NULL((void *)0);
614 const struct got_error *err = NULL((void *)0);
615 char *repo_path = NULL((void *)0);
616 size_t i;
617 struct rlimit rl;
618
619 *repop = NULL((void *)0);
620
621 if (getrlimit(RLIMIT_NOFILE8, &rl) == -1)
1
Assuming the condition is false
→
2
←
Taking false branch
→
622 return got_error_from_errno("getrlimit");
623
624 repo = calloc(1, sizeof(*repo));
3
←
Value assigned to 'repo'
→
625 if (repo == NULL((void *)0)) {
4
←
Assuming 'repo' is equal to NULL
→
5
←
Taking true branch
→
626 err = got_error_from_errno("calloc");
627 goto done;
6
←
Control jumps to line 706
→
628 }
629
630 for (i = 0; i < nitems(repo->privsep_children)(sizeof(repo->privsep_children) / sizeof((repo->privsep_children
)[0])); i++) {
631 memset(&repo->privsep_children[i], 0,
632 sizeof(repo->privsep_children[0]));
633 repo->privsep_children[i].imsg_fd = -1;
634 }
635
636 err = got_object_cache_init(&repo->objcache,
637 GOT_OBJECT_CACHE_TYPE_OBJ);
638 if (err)
639 goto done;
640 err = got_object_cache_init(&repo->treecache,
641 GOT_OBJECT_CACHE_TYPE_TREE);
642 if (err)
643 goto done;
644 err = got_object_cache_init(&repo->commitcache,
645 GOT_OBJECT_CACHE_TYPE_COMMIT);
646 if (err)
647 goto done;
648 err = got_object_cache_init(&repo->tagcache,
649 GOT_OBJECT_CACHE_TYPE_TAG);
650 if (err)
651 goto done;
652
653 repo->pack_cache_size = GOT_PACK_CACHE_SIZE64;
654 if (repo->pack_cache_size > rl.rlim_cur / 8)
655 repo->pack_cache_size = rl.rlim_cur / 8;
656
657 repo_path = realpath(path, NULL((void *)0));
658 if (repo_path == NULL((void *)0)) {
659 err = got_error_from_errno2("realpath", path);
660 goto done;
661 }
662
663 for (;;) {
664 char *parent_path;
665
666 err = open_repo(repo, repo_path);
667 if (err == NULL((void *)0))
668 break;
669 if (err->code != GOT_ERR_NOT_GIT_REPO2)
670 goto done;
671 if (repo_path[0] == '/' && repo_path[1] == '\0') {
672 err = got_error(GOT_ERR_NOT_GIT_REPO2);
673 goto done;
674 }
675 err = got_path_dirname(&parent_path, repo_path);
676 if (err)
677 goto done;
678 free(repo_path);
679 repo_path = parent_path;
680 }
681
682 err = read_gotconfig(repo);
683 if (err)
684 goto done;
685
686 err = read_gitconfig(repo, global_gitconfig_path);
687 if (err)
688 goto done;
689 if (repo->gitconfig_repository_format_version != 0)
690 err = got_error_path(path, GOT_ERR_GIT_REPO_FORMAT110);
691 for (i = 0; i < repo->nextensions; i++) {
692 char *ext = repo->extensions[i];
693 int j, supported = 0;
694 for (j = 0; j < nitems(repo_extensions)(sizeof(repo_extensions) / sizeof((repo_extensions)[0])); j++) {
695 if (strcmp(ext, repo_extensions[j]) == 0) {
696 supported = 1;
697 break;
698 }
699 }
700 if (!supported) {
701 err = got_error_path(ext, GOT_ERR_GIT_REPO_EXT130);
702 goto done;
703 }
704 }
705done:
706 if (err)
7
←
Assuming 'err' is non-null
→
8
←
Taking true branch
→
707 got_repo_close(repo);
9
←
Passing null pointer value via 1st parameter 'repo'
→
10
←
Calling 'got_repo_close'
→
708 else
709 *repop = repo;
710 free(repo_path);
711 return err;
712}
713
714const struct got_error *
715got_repo_close(struct got_repository *repo)
716{
717 const struct got_error *err = NULL((void *)0), *child_err;
718 size_t i;
719
720 for (i = 0; i < repo->pack_cache_size; i++) {
11
←
Access to field 'pack_cache_size' results in a dereference of a null pointer (loaded from variable 'repo')
721 if (repo->packidx_cache[i] == NULL((void *)0))
722 break;
723 got_packidx_close(repo->packidx_cache[i]);
724 }
725
726 for (i = 0; i < repo->pack_cache_size; i++) {
727 if (repo->packs[i].path_packfile == NULL((void *)0))
728 break;
729 got_pack_close(&repo->packs[i]);
730 }
731
732 free(repo->path);
733 free(repo->path_git_dir);
734
735 got_object_cache_close(&repo->objcache);
736 got_object_cache_close(&repo->treecache);
737 got_object_cache_close(&repo->commitcache);
738 got_object_cache_close(&repo->tagcache);
739
740 for (i = 0; i < nitems(repo->privsep_children)(sizeof(repo->privsep_children) / sizeof((repo->privsep_children
)[0])); i++) {
741 if (repo->privsep_children[i].imsg_fd == -1)
742 continue;
743 imsg_clear(repo->privsep_children[i].ibuf);
744 free(repo->privsep_children[i].ibuf);
745 err = got_privsep_send_stop(repo->privsep_children[i].imsg_fd);
746 child_err = got_privsep_wait_for_child(
747 repo->privsep_children[i].pid);
748 if (child_err && err == NULL((void *)0))
749 err = child_err;
750 if (close(repo->privsep_children[i].imsg_fd) == -1 &&
751 err == NULL((void *)0))
752 err = got_error_from_errno("close");
753 }
754
755 if (repo->gotconfig)
756 got_gotconfig_free(repo->gotconfig);
757 free(repo->gitconfig_author_name);
758 free(repo->gitconfig_author_email);
759 for (i = 0; i < repo->ngitconfig_remotes; i++)
760 got_repo_free_remote_repo_data(&repo->gitconfig_remotes[i]);
761 free(repo->gitconfig_remotes);
762 for (i = 0; i < repo->nextensions; i++)
763 free(repo->extensions[i]);
764 free(repo->extensions);
765 free(repo);
766
767 return err;
768}
769
770void
771got_repo_free_remote_repo_data(struct got_remote_repo *repo)
772{
773 int i;
774
775 free(repo->name);
776 repo->name = NULL((void *)0);
777 free(repo->url);
778 repo->url = NULL((void *)0);
779 for (i = 0; i < repo->nbranches; i++)
780 free(repo->branches[i]);
781 free(repo->branches);
782 repo->branches = NULL((void *)0);
783 repo->nbranches = 0;
784}
785
786const struct got_error *
787got_repo_map_path(char **in_repo_path, struct got_repository *repo,
788 const char *input_path)
789{
790 const struct got_error *err = NULL((void *)0);
791 const char *repo_abspath = NULL((void *)0);
792 size_t repolen, len;
793 char *canonpath, *path = NULL((void *)0);
794
795 *in_repo_path = NULL((void *)0);
796
797 canonpath = strdup(input_path);
798 if (canonpath == NULL((void *)0)) {
799 err = got_error_from_errno("strdup");
800 goto done;
801 }
802 err = got_canonpath(input_path, canonpath, strlen(canonpath) + 1);
803 if (err)
804 goto done;
805
806 repo_abspath = got_repo_get_path(repo);
807
808 if (canonpath[0] == '\0') {
809 path = strdup(canonpath);
810 if (path == NULL((void *)0)) {
811 err = got_error_from_errno("strdup");
812 goto done;
813 }
814 } else {
815 path = realpath(canonpath, NULL((void *)0));
816 if (path == NULL((void *)0)) {
817 if (errno(*__errno()) != ENOENT2) {
818 err = got_error_from_errno2("realpath",
819 canonpath);
820 goto done;
821 }
822 /*
823 * Path is not on disk.
824 * Assume it is already relative to repository root.
825 */
826 path = strdup(canonpath);
827 if (path == NULL((void *)0)) {
828 err = got_error_from_errno("strdup");
829 goto done;
830 }
831 }
832
833 repolen = strlen(repo_abspath);
834 len = strlen(path);
835
836
837 if (strcmp(path, repo_abspath) == 0) {
838 free(path);
839 path = strdup("");
840 if (path == NULL((void *)0)) {
841 err = got_error_from_errno("strdup");
842 goto done;
843 }
844 } else if (len > repolen &&
845 got_path_is_child(path, repo_abspath, repolen)) {
846 /* Matched an on-disk path inside repository. */
847 if (got_repo_is_bare(repo)) {
848 /*
849 * Matched an on-disk path inside repository
850 * database. Treat input as repository-relative.
851 */
852 free(path);
853 path = canonpath;
854 canonpath = NULL((void *)0);
855 } else {
856 char *child;
857 /* Strip common prefix with repository path. */
858 err = got_path_skip_common_ancestor(&child,
859 repo_abspath, path);
860 if (err)
861 goto done;
862 free(path);
863 path = child;
864 }
865 } else {
866 /*
867 * Matched unrelated on-disk path.
868 * Treat input as repository-relative.
869 */
870 free(path);
871 path = canonpath;
872 canonpath = NULL((void *)0);
873 }
874 }
875
876 /* Make in-repository path absolute */
877 if (path[0] != '/') {
878 char *abspath;
879 if (asprintf(&abspath, "/%s", path) == -1) {
880 err = got_error_from_errno("asprintf");
881 goto done;
882 }
883 free(path);
884 path = abspath;
885 }
886
887done:
888 free(canonpath);
889 if (err)
890 free(path);
891 else
892 *in_repo_path = path;
893 return err;
894}
895
896static const struct got_error *
897cache_packidx(struct got_repository *repo, struct got_packidx *packidx,
898 const char *path_packidx)
899{
900 const struct got_error *err = NULL((void *)0);
901 size_t i;
902
903 for (i = 0; i < repo->pack_cache_size; i++) {
904 if (repo->packidx_cache[i] == NULL((void *)0))
905 break;
906 if (strcmp(repo->packidx_cache[i]->path_packidx,
907 path_packidx) == 0) {
908 return got_error(GOT_ERR_CACHE_DUP_ENTRY116);
909 }
910 }
911 if (i == repo->pack_cache_size) {
912 err = got_packidx_close(repo->packidx_cache[i - 1]);
913 if (err)
914 return err;
915 }
916
917 /*
918 * Insert the new pack index at the front so it will
919 * be searched first in the future.
920 */
921 memmove(&repo->packidx_cache[1], &repo->packidx_cache[0],
922 sizeof(repo->packidx_cache) -
923 sizeof(repo->packidx_cache[0]));
924 repo->packidx_cache[0] = packidx;
925
926 return NULL((void *)0);
927}
928
929static int
930is_packidx_filename(const char *name, size_t len)
931{
932 if (len != GOT_PACKIDX_NAMELEN(strlen("pack-") + (20 * 2 + 1) - 1 + strlen(".idx")))
933 return 0;
934
935 if (strncmp(name, GOT_PACK_PREFIX"pack-", strlen(GOT_PACK_PREFIX"pack-")) != 0)
936 return 0;
937
938 if (strcmp(name + strlen(GOT_PACK_PREFIX"pack-") +
939 SHA1_DIGEST_STRING_LENGTH(20 * 2 + 1) - 1, GOT_PACKIDX_SUFFIX".idx") != 0)
940 return 0;
941
942 return 1;
943}
944
945const struct got_error *
946got_repo_search_packidx(struct got_packidx **packidx, int *idx,
947 struct got_repository *repo, struct got_object_id *id)
948{
949 const struct got_error *err;
950 DIR *packdir = NULL((void *)0);
951 struct dirent *dent;
952 char *path_packidx;
953 size_t i;
954 int packdir_fd;
955
956 /* Search pack index cache. */
957 for (i = 0; i < repo->pack_cache_size; i++) {
958 if (repo->packidx_cache[i] == NULL((void *)0))
959 break;
960 *idx = got_packidx_get_object_idx(repo->packidx_cache[i], id);
961 if (*idx != -1) {
962 *packidx = repo->packidx_cache[i];
963 /*
964 * Move this cache entry to the front. Repeatedly
965 * searching a wrong pack index can be expensive.
966 */
967 if (i > 0) {
968 struct got_packidx *p;
969 p = repo->packidx_cache[0];
970 repo->packidx_cache[0] = *packidx;
971 repo->packidx_cache[i] = p;
972 }
973 return NULL((void *)0);
974 }
975 }
976 /* No luck. Search the filesystem. */
977
978 packdir_fd = openat(got_repo_get_fd(repo),
979 GOT_OBJECTS_PACK_DIR"objects/pack", O_DIRECTORY0x20000);
980 if (packdir_fd == -1) {
981 if (errno(*__errno()) == ENOENT2)
982 err = got_error_no_obj(id);
983 else
984 err = got_error_from_errno_fmt("openat: %s/%s",
985 got_repo_get_path_git_dir(repo),
986 GOT_OBJECTS_PACK_DIR"objects/pack");
987 goto done;
988 }
989
990 packdir = fdopendir(packdir_fd);
991 if (packdir == NULL((void *)0)) {
992 err = got_error_from_errno("fdopendir");
993 goto done;
994 }
995
996 while ((dent = readdir(packdir)) != NULL((void *)0)) {
997 int is_cached = 0;
998
999 if (!is_packidx_filename(dent->d_name, dent->d_namlen))
1000 continue;
1001
1002 if (asprintf(&path_packidx, "%s/%s", GOT_OBJECTS_PACK_DIR"objects/pack",
1003 dent->d_name) == -1) {
1004 err = got_error_from_errno("asprintf");
1005 goto done;
1006 }
1007
1008 for (i = 0; i < repo->pack_cache_size; i++) {
1009 if (repo->packidx_cache[i] == NULL((void *)0))
1010 break;
1011 if (strcmp(repo->packidx_cache[i]->path_packidx,
1012 path_packidx) == 0) {
1013 is_cached = 1;
1014 break;
1015 }
1016 }
1017 if (is_cached) {
1018 free(path_packidx);
1019 continue; /* already searched */
1020 }
1021
1022 err = got_packidx_open(packidx, got_repo_get_fd(repo),
1023 path_packidx, 0);
1024 if (err) {
1025 free(path_packidx);
1026 goto done;
1027 }
1028
1029 err = cache_packidx(repo, *packidx, path_packidx);
1030 free(path_packidx);
1031 if (err)
1032 goto done;
1033
1034 *idx = got_packidx_get_object_idx(*packidx, id);
1035 if (*idx != -1) {
1036 err = NULL((void *)0); /* found the object */
1037 goto done;
1038 }
1039 }
1040
1041 err = got_error_no_obj(id);
1042done:
1043 if (packdir && closedir(packdir) != 0 && err == NULL((void *)0))
1044 err = got_error_from_errno("closedir");
1045 return err;
1046}
1047
1048static const struct got_error *
1049read_packfile_hdr(int fd, struct got_packidx *packidx)
1050{
1051 const struct got_error *err = NULL((void *)0);
1052 uint32_t totobj = be32toh(packidx->hdr.fanout_table[0xff])(__uint32_t)(__builtin_constant_p(packidx->hdr.fanout_table
[0xff]) ? (__uint32_t)(((__uint32_t)(packidx->hdr.fanout_table
[0xff]) & 0xff) << 24 | ((__uint32_t)(packidx->hdr
.fanout_table[0xff]) & 0xff00) << 8 | ((__uint32_t)
(packidx->hdr.fanout_table[0xff]) & 0xff0000) >>
8 | ((__uint32_t)(packidx->hdr.fanout_table[0xff]) & 0xff000000
) >> 24) : __swap32md(packidx->hdr.fanout_table[0xff
]));
1053 struct got_packfile_hdr hdr;
1054 ssize_t n;
1055
1056 n = read(fd, &hdr, sizeof(hdr));
1057 if (n < 0)
1058 return got_error_from_errno("read");
1059 if (n != sizeof(hdr))
1060 return got_error(GOT_ERR_BAD_PACKFILE16);
1061
1062 if (be32toh(hdr.signature)(__uint32_t)(__builtin_constant_p(hdr.signature) ? (__uint32_t
)(((__uint32_t)(hdr.signature) & 0xff) << 24 | ((__uint32_t
)(hdr.signature) & 0xff00) << 8 | ((__uint32_t)(hdr
.signature) & 0xff0000) >> 8 | ((__uint32_t)(hdr.signature
) & 0xff000000) >> 24) : __swap32md(hdr.signature)) != GOT_PACKFILE_SIGNATURE0x5041434b ||
1063 be32toh(hdr.version)(__uint32_t)(__builtin_constant_p(hdr.version) ? (__uint32_t)
(((__uint32_t)(hdr.version) & 0xff) << 24 | ((__uint32_t
)(hdr.version) & 0xff00) << 8 | ((__uint32_t)(hdr.version
) & 0xff0000) >> 8 | ((__uint32_t)(hdr.version) &
0xff000000) >> 24) : __swap32md(hdr.version)) != GOT_PACKFILE_VERSION2 ||
1064 be32toh(hdr.nobjects)(__uint32_t)(__builtin_constant_p(hdr.nobjects) ? (__uint32_t
)(((__uint32_t)(hdr.nobjects) & 0xff) << 24 | ((__uint32_t
)(hdr.nobjects) & 0xff00) << 8 | ((__uint32_t)(hdr.
nobjects) & 0xff0000) >> 8 | ((__uint32_t)(hdr.nobjects
) & 0xff000000) >> 24) : __swap32md(hdr.nobjects)) != totobj)
1065 err = got_error(GOT_ERR_BAD_PACKFILE16);
1066
1067 return err;
1068}
1069
1070static const struct got_error *
1071open_packfile(int *fd, struct got_repository *repo,
1072 const char *relpath, struct got_packidx *packidx)
1073{
1074 const struct got_error *err = NULL((void *)0);
1075
1076 *fd = openat(got_repo_get_fd(repo), relpath, O_RDONLY0x0000 | O_NOFOLLOW0x0100);
1077 if (*fd == -1)
1078 return got_error_from_errno_fmt("openat: %s/%s",
1079 got_repo_get_path_git_dir(repo), relpath);
1080
1081 if (packidx) {
1082 err = read_packfile_hdr(*fd, packidx);
1083 if (err) {
1084 close(*fd);
1085 *fd = -1;
1086 }
1087 }
1088
1089 return err;
1090}
1091
1092const struct got_error *
1093got_repo_cache_pack(struct got_pack **packp, struct got_repository *repo,
1094 const char *path_packfile, struct got_packidx *packidx)
1095{
1096 const struct got_error *err = NULL((void *)0);
1097 struct got_pack *pack = NULL((void *)0);
1098 struct stat sb;
1099 size_t i;
1100
1101 if (packp)
1102 *packp = NULL((void *)0);
1103
1104 for (i = 0; i < repo->pack_cache_size; i++) {
1105 pack = &repo->packs[i];
1106 if (pack->path_packfile == NULL((void *)0))
1107 break;
1108 if (strcmp(pack->path_packfile, path_packfile) == 0)
1109 return got_error(GOT_ERR_CACHE_DUP_ENTRY116);
1110 }
1111
1112 if (i == repo->pack_cache_size) {
1113 err = got_pack_close(&repo->packs[i - 1]);
1114 if (err)
1115 return err;
1116 memmove(&repo->packs[1], &repo->packs[0],
1117 sizeof(repo->packs) - sizeof(repo->packs[0]));
1118 i = 0;
1119 }
1120
1121 pack = &repo->packs[i];
1122
1123 pack->path_packfile = strdup(path_packfile);
1124 if (pack->path_packfile == NULL((void *)0)) {
1125 err = got_error_from_errno("strdup");
1126 goto done;
1127 }
1128
1129 err = open_packfile(&pack->fd, repo, path_packfile, packidx);
1130 if (err)
1131 goto done;
1132
1133 if (fstat(pack->fd, &sb) != 0) {
1134 err = got_error_from_errno("fstat");
1135 goto done;
1136 }
1137 pack->filesize = sb.st_size;
1138
1139 pack->privsep_child = NULL((void *)0);
1140
1141#ifndef GOT_PACK_NO_MMAP
1142 pack->map = mmap(NULL((void *)0), pack->filesize, PROT_READ0x01, MAP_PRIVATE0x0002,
1143 pack->fd, 0);
1144 if (pack->map == MAP_FAILED((void *)-1)) {
1145 if (errno(*__errno()) != ENOMEM12) {
1146 err = got_error_from_errno("mmap");
1147 goto done;
1148 }
1149 pack->map = NULL((void *)0); /* fall back to read(2) */
1150 }
1151#endif
1152done:
1153 if (err) {
1154 if (pack) {
1155 free(pack->path_packfile);
1156 memset(pack, 0, sizeof(*pack));
1157 }
1158 } else if (packp)
1159 *packp = pack;
1160 return err;
1161}
1162
1163struct got_pack *
1164got_repo_get_cached_pack(struct got_repository *repo, const char *path_packfile)
1165{
1166 struct got_pack *pack = NULL((void *)0);
1167 size_t i;
1168
1169 for (i = 0; i < repo->pack_cache_size; i++) {
1170 pack = &repo->packs[i];
1171 if (pack->path_packfile == NULL((void *)0))
1172 break;
1173 if (strcmp(pack->path_packfile, path_packfile) == 0)
1174 return pack;
1175 }
1176
1177 return NULL((void *)0);
1178}
1179
1180const struct got_error *
1181got_repo_init(const char *repo_path)
1182{
1183 const struct got_error *err = NULL((void *)0);
1184 const char *dirnames[] = {
1185 GOT_OBJECTS_DIR"objects",
1186 GOT_OBJECTS_PACK_DIR"objects/pack",
1187 GOT_REFS_DIR"refs",
1188 };
1189 const char *description_str = "Unnamed repository; "
1190 "edit this file 'description' to name the repository.";
1191 const char *headref_str = "ref: refs/heads/main";
1192 const char *gitconfig_str = "[core]\n"
1193 "\trepositoryformatversion = 0\n"
1194 "\tfilemode = true\n"
1195 "\tbare = true\n";
1196 char *path;
1197 size_t i;
1198
1199 if (!got_path_dir_is_empty(repo_path))
1200 return got_error(GOT_ERR_DIR_NOT_EMPTY75);
1201
1202 for (i = 0; i < nitems(dirnames)(sizeof(dirnames) / sizeof((dirnames)[0])); i++) {
1203 if (asprintf(&path, "%s/%s", repo_path, dirnames[i]) == -1) {
1204 return got_error_from_errno("asprintf");
1205 }
1206 err = got_path_mkdir(path);
1207 free(path);
1208 if (err)
1209 return err;
1210 }
1211
1212 if (asprintf(&path, "%s/%s", repo_path, "description") == -1)
1213 return got_error_from_errno("asprintf");
1214 err = got_path_create_file(path, description_str);
1215 free(path);
1216 if (err)
1217 return err;
1218
1219 if (asprintf(&path, "%s/%s", repo_path, GOT_HEAD_FILE"HEAD") == -1)
1220 return got_error_from_errno("asprintf");
1221 err = got_path_create_file(path, headref_str);
1222 free(path);
1223 if (err)
1224 return err;
1225
1226 if (asprintf(&path, "%s/%s", repo_path, "config") == -1)
1227 return got_error_from_errno("asprintf");
1228 err = got_path_create_file(path, gitconfig_str);
1229 free(path);
1230 if (err)
1231 return err;
1232
1233 return NULL((void *)0);
1234}
1235
1236static const struct got_error *
1237match_packed_object(struct got_object_id **unique_id,
1238 struct got_repository *repo, const char *id_str_prefix, int obj_type)
1239{
1240 const struct got_error *err = NULL((void *)0);
1241 DIR *packdir = NULL((void *)0);
1242 struct dirent *dent;
1243 char *path_packidx;
1244 struct got_object_id_queue matched_ids;
1245 int packdir_fd;
1246
1247 SIMPLEQ_INIT(&matched_ids)do { (&matched_ids)->sqh_first = ((void *)0); (&matched_ids
)->sqh_last = &(&matched_ids)->sqh_first; } while
(0);
1248
1249 packdir_fd = openat(got_repo_get_fd(repo),
1250 GOT_OBJECTS_PACK_DIR"objects/pack", O_DIRECTORY0x20000);
1251 if (packdir_fd == -1) {
1252 if (errno(*__errno()) != ENOENT2)
1253 err = got_error_from_errno2("openat", GOT_OBJECTS_PACK_DIR"objects/pack");
1254 goto done;
1255 }
1256
1257 packdir = fdopendir(packdir_fd);
1258 if (packdir == NULL((void *)0)) {
1259 err = got_error_from_errno("fdopendir");
1260 goto done;
1261 }
1262
1263 while ((dent = readdir(packdir)) != NULL((void *)0)) {
1264 struct got_packidx *packidx;
1265 struct got_object_qid *qid;
1266
1267 if (!is_packidx_filename(dent->d_name, dent->d_namlen))
1268 continue;
1269
1270 if (asprintf(&path_packidx, "%s/%s", GOT_OBJECTS_PACK_DIR"objects/pack",
1271 dent->d_name) == -1) {
1272 err = got_error_from_errno("strdup");
1273 break;
1274 }
1275
1276 err = got_packidx_open(&packidx, got_repo_get_fd(repo),
1277 path_packidx, 0);
1278 free(path_packidx);
1279 if (err)
1280 break;
1281
1282 err = got_packidx_match_id_str_prefix(&matched_ids,
1283 packidx, id_str_prefix);
1284 if (err) {
1285 got_packidx_close(packidx);
1286 break;
1287 }
1288 err = got_packidx_close(packidx);
1289 if (err)
1290 break;
1291
1292 SIMPLEQ_FOREACH(qid, &matched_ids, entry)for((qid) = ((&matched_ids)->sqh_first); (qid) != ((void
*)0); (qid) = ((qid)->entry.sqe_next)) {
1293 if (obj_type != GOT_OBJ_TYPE_ANY0) {
1294 int matched_type;
1295 err = got_object_get_type(&matched_type, repo,
1296 qid->id);
1297 if (err)
1298 goto done;
1299 if (matched_type != obj_type)
1300 continue;
1301 }
1302 if (*unique_id == NULL((void *)0)) {
1303 *unique_id = got_object_id_dup(qid->id);
1304 if (*unique_id == NULL((void *)0)) {
1305 err = got_error_from_errno("malloc");
1306 goto done;
1307 }
1308 } else {
1309 if (got_object_id_cmp(*unique_id, qid->id) == 0)
1310 continue; /* packed multiple times */
1311 err = got_error(GOT_ERR_AMBIGUOUS_ID13);
1312 goto done;
1313 }
1314 }
1315 }
1316done:
1317 got_object_id_queue_free(&matched_ids);
1318 if (packdir && closedir(packdir) != 0 && err == NULL((void *)0))
1319 err = got_error_from_errno("closedir");
1320 if (err) {
1321 free(*unique_id);
1322 *unique_id = NULL((void *)0);
1323 }
1324 return err;
1325}
1326
1327static const struct got_error *
1328match_loose_object(struct got_object_id **unique_id, const char *path_objects,
1329 const char *object_dir, const char *id_str_prefix, int obj_type,
1330 struct got_repository *repo)
1331{
1332 const struct got_error *err = NULL((void *)0);
1333 char *path;
1334 DIR *dir = NULL((void *)0);
1335 struct dirent *dent;
1336 struct got_object_id id;
1337
1338 if (asprintf(&path, "%s/%s", path_objects, object_dir) == -1) {
1339 err = got_error_from_errno("asprintf");
1340 goto done;
1341 }
1342
1343 dir = opendir(path);
1344 if (dir == NULL((void *)0)) {
1345 if (errno(*__errno()) == ENOENT2) {
1346 err = NULL((void *)0);
1347 goto done;
1348 }
1349 err = got_error_from_errno2("opendir", path);
1350 goto done;
1351 }
1352 while ((dent = readdir(dir)) != NULL((void *)0)) {
1353 char *id_str;
1354 int cmp;
1355
1356 if (strcmp(dent->d_name, ".") == 0 ||
1357 strcmp(dent->d_name, "..") == 0)
1358 continue;
1359
1360 if (asprintf(&id_str, "%s%s", object_dir, dent->d_name) == -1) {
1361 err = got_error_from_errno("asprintf");
1362 goto done;
1363 }
1364
1365 if (!got_parse_sha1_digest(id.sha1, id_str))
1366 continue;
1367
1368 /*
1369 * Directory entries do not necessarily appear in
1370 * sorted order, so we must iterate over all of them.
1371 */
1372 cmp = strncmp(id_str, id_str_prefix, strlen(id_str_prefix));
1373 if (cmp != 0) {
1374 free(id_str);
1375 continue;
1376 }
1377
1378 if (*unique_id == NULL((void *)0)) {
1379 if (obj_type != GOT_OBJ_TYPE_ANY0) {
1380 int matched_type;
1381 err = got_object_get_type(&matched_type, repo,
1382 &id);
1383 if (err)
1384 goto done;
1385 if (matched_type != obj_type)
1386 continue;
1387 }
1388 *unique_id = got_object_id_dup(&id);
1389 if (*unique_id == NULL((void *)0)) {
1390 err = got_error_from_errno("got_object_id_dup");
1391 free(id_str);
1392 goto done;
1393 }
1394 } else {
1395 if (got_object_id_cmp(*unique_id, &id) == 0)
1396 continue; /* both packed and loose */
1397 err = got_error(GOT_ERR_AMBIGUOUS_ID13);
1398 free(id_str);
1399 goto done;
1400 }
1401 }
1402done:
1403 if (dir && closedir(dir) != 0 && err == NULL((void *)0))
1404 err = got_error_from_errno("closedir");
1405 if (err) {
1406 free(*unique_id);
1407 *unique_id = NULL((void *)0);
1408 }
1409 free(path);
1410 return err;
1411}
1412
1413const struct got_error *
1414got_repo_match_object_id_prefix(struct got_object_id **id,
1415 const char *id_str_prefix, int obj_type, struct got_repository *repo)
1416{
1417 const struct got_error *err = NULL((void *)0);
1418 char *path_objects = got_repo_get_path_objects(repo);
1419 char *object_dir = NULL((void *)0);
1420 size_t len;
1421 int i;
1422
1423 *id = NULL((void *)0);
1424
1425 for (i = 0; i < strlen(id_str_prefix); i++) {
1426 if (isxdigit((unsigned char)id_str_prefix[i]))
1427 continue;
1428 return got_error_path(id_str_prefix, GOT_ERR_BAD_OBJ_ID_STR23);
1429 }
1430
1431 len = strlen(id_str_prefix);
1432 if (len >= 2) {
1433 err = match_packed_object(id, repo, id_str_prefix, obj_type);
1434 if (err)
1435 goto done;
1436 object_dir = strndup(id_str_prefix, 2);
1437 if (object_dir == NULL((void *)0)) {
1438 err = got_error_from_errno("strdup");
1439 goto done;
1440 }
1441 err = match_loose_object(id, path_objects, object_dir,
1442 id_str_prefix, obj_type, repo);
1443 } else if (len == 1) {
1444 int i;
1445 for (i = 0; i < 0xf; i++) {
1446 if (asprintf(&object_dir, "%s%.1x", id_str_prefix, i)
1447 == -1) {
1448 err = got_error_from_errno("asprintf");
1449 goto done;
1450 }
1451 err = match_packed_object(id, repo, object_dir,
1452 obj_type);
1453 if (err)
1454 goto done;
1455 err = match_loose_object(id, path_objects, object_dir,
1456 id_str_prefix, obj_type, repo);
1457 if (err)
1458 goto done;
1459 }
1460 } else {
1461 err = got_error_path(id_str_prefix, GOT_ERR_BAD_OBJ_ID_STR23);
1462 goto done;
1463 }
1464done:
1465 free(object_dir);
1466 if (err) {
1467 free(*id);
1468 *id = NULL((void *)0);
1469 } else if (*id == NULL((void *)0))
1470 err = got_error_path(id_str_prefix, GOT_ERR_NO_OBJ17);
1471
1472 return err;
1473}
1474
1475const struct got_error *
1476got_repo_match_object_id(struct got_object_id **id, char **label,
1477 const char *id_str, int obj_type, struct got_reflist_head *refs,
1478 struct got_repository *repo)
1479{
1480 const struct got_error *err;
1481 struct got_tag_object *tag;
1482 struct got_reference *ref = NULL((void *)0);
1483
1484 *id = NULL((void *)0);
1485 if (label)
1486 *label = NULL((void *)0);
1487
1488 if (refs) {
1489 err = got_repo_object_match_tag(&tag, id_str, GOT_OBJ_TYPE_ANY0,
1490 refs, repo);
1491 if (err == NULL((void *)0)) {
1492 *id = got_object_id_dup(
1493 got_object_tag_get_object_id(tag));
1494 if (*id == NULL((void *)0))
1495 err = got_error_from_errno("got_object_id_dup");
1496 else if (label && asprintf(label, "refs/tags/%s",
1497 got_object_tag_get_name(tag)) == -1) {
1498 err = got_error_from_errno("asprintf");
1499 free(*id);
1500 *id = NULL((void *)0);
1501 }
1502 got_object_tag_close(tag);
1503 return err;
1504 } else if (err->code != GOT_ERR_OBJ_TYPE11 &&
1505 err->code != GOT_ERR_NO_OBJ17)
1506 return err;
1507 }
1508
1509 err = got_repo_match_object_id_prefix(id, id_str, obj_type, repo);
1510 if (err) {
1511 if (err->code != GOT_ERR_BAD_OBJ_ID_STR23)
1512 return err;
1513 err = got_ref_open(&ref, repo, id_str, 0);
1514 if (err != NULL((void *)0))
1515 goto done;
1516 if (label) {
1517 *label = strdup(got_ref_get_name(ref));
1518 if (*label == NULL((void *)0)) {
1519 err = got_error_from_errno("strdup");
1520 goto done;
1521 }
1522 }
1523 err = got_ref_resolve(id, repo, ref);
1524 } else if (label) {
1525 err = got_object_id_str(label, *id);
1526 if (*label == NULL((void *)0)) {
1527 err = got_error_from_errno("strdup");
1528 goto done;
1529 }
1530 }
1531done:
1532 if (ref)
1533 got_ref_close(ref);
1534 return err;
1535}
1536
1537const struct got_error *
1538got_repo_object_match_tag(struct got_tag_object **tag, const char *name,
1539 int obj_type, struct got_reflist_head *refs, struct got_repository *repo)
1540{
1541 const struct got_error *err = NULL((void *)0);
1542 struct got_reflist_entry *re;
1543 struct got_object_id *tag_id;
1544 int name_is_absolute = (strncmp(name, "refs/", 5) == 0);
1545
1546 *tag = NULL((void *)0);
1547
1548 TAILQ_FOREACH(re, refs, entry)for((re) = ((refs)->tqh_first); (re) != ((void *)0); (re) =
((re)->entry.tqe_next)) {
1549 const char *refname;
1550 refname = got_ref_get_name(re->ref);
1551 if (got_ref_is_symbolic(re->ref))
1552 continue;
1553 if (strncmp(refname, "refs/tags/", 10) != 0)
1554 continue;
1555 if (!name_is_absolute)
1556 refname += strlen("refs/tags/");
1557 if (strcmp(refname, name) != 0)
1558 continue;
1559 err = got_ref_resolve(&tag_id, repo, re->ref);
1560 if (err)
1561 break;
1562 err = got_object_open_as_tag(tag, repo, tag_id);
1563 free(tag_id);
1564 if (err)
1565 break;
1566 if (obj_type == GOT_OBJ_TYPE_ANY0 ||
1567 got_object_tag_get_object_type(*tag) == obj_type)
1568 break;
1569 got_object_tag_close(*tag);
1570 *tag = NULL((void *)0);
1571 }
1572
1573 if (err == NULL((void *)0) && *tag == NULL((void *)0))
1574 err = got_error_path(name, GOT_ERR_NO_OBJ17);
1575 return err;
1576}
1577
1578static const struct got_error *
1579alloc_added_blob_tree_entry(struct got_tree_entry **new_te,
1580 const char *name, mode_t mode, struct got_object_id *blob_id)
1581{
1582 const struct got_error *err = NULL((void *)0);
1583
1584 *new_te = NULL((void *)0);
1585
1586 *new_te = calloc(1, sizeof(**new_te));
1587 if (*new_te == NULL((void *)0))
1588 return got_error_from_errno("calloc");
1589
1590 if (strlcpy((*new_te)->name, name, sizeof((*new_te)->name)) >=
1591 sizeof((*new_te)->name)) {
1592 err = got_error(GOT_ERR_NO_SPACE9);
1593 goto done;
1594 }
1595
1596 if (S_ISLNK(mode)((mode & 0170000) == 0120000)) {
1597 (*new_te)->mode = S_IFLNK0120000;
1598 } else {
1599 (*new_te)->mode = S_IFREG0100000;
1600 (*new_te)->mode |= (mode & (S_IRWXU0000700 | S_IRWXG0000070 | S_IRWXO0000007));
1601 }
1602 memcpy(&(*new_te)->id, blob_id, sizeof((*new_te)->id));
1603done:
1604 if (err && *new_te) {
1605 free(*new_te);
1606 *new_te = NULL((void *)0);
1607 }
1608 return err;
1609}
1610
1611static const struct got_error *
1612import_file(struct got_tree_entry **new_te, struct dirent *de,
1613 const char *path, struct got_repository *repo)
1614{
1615 const struct got_error *err;
1616 struct got_object_id *blob_id = NULL((void *)0);
1617 char *filepath;
1618 struct stat sb;
1619
1620 if (asprintf(&filepath, "%s%s%s", path,
1621 path[0] == '\0' ? "" : "/", de->d_name) == -1)
1622 return got_error_from_errno("asprintf");
1623
1624 if (lstat(filepath, &sb) != 0) {
1625 err = got_error_from_errno2("lstat", path);
1626 goto done;
1627 }
1628
1629 err = got_object_blob_create(&blob_id, filepath, repo);
1630 if (err)
1631 goto done;
1632
1633 err = alloc_added_blob_tree_entry(new_te, de->d_name, sb.st_mode,
1634 blob_id);
1635done:
1636 free(filepath);
1637 if (err)
1638 free(blob_id);
1639 return err;
1640}
1641
1642static const struct got_error *
1643insert_tree_entry(struct got_tree_entry *new_te,
1644 struct got_pathlist_head *paths)
1645{
1646 const struct got_error *err = NULL((void *)0);
1647 struct got_pathlist_entry *new_pe;
1648
1649 err = got_pathlist_insert(&new_pe, paths, new_te->name, new_te);
1650 if (err)
1651 return err;
1652 if (new_pe == NULL((void *)0))
1653 return got_error(GOT_ERR_TREE_DUP_ENTRY58);
1654 return NULL((void *)0);
1655}
1656
1657static const struct got_error *write_tree(struct got_object_id **,
1658 const char *, struct got_pathlist_head *, struct got_repository *,
1659 got_repo_import_cb progress_cb, void *progress_arg);
1660
1661static const struct got_error *
1662import_subdir(struct got_tree_entry **new_te, struct dirent *de,
1663 const char *path, struct got_pathlist_head *ignores,
1664 struct got_repository *repo,
1665 got_repo_import_cb progress_cb, void *progress_arg)
1666{
1667 const struct got_error *err;
1668 struct got_object_id *id = NULL((void *)0);
1669 char *subdirpath;
1670
1671 if (asprintf(&subdirpath, "%s%s%s", path,
1672 path[0] == '\0' ? "" : "/", de->d_name) == -1)
1673 return got_error_from_errno("asprintf");
1674
1675 (*new_te) = calloc(1, sizeof(**new_te));
1676 if (*new_te == NULL((void *)0))
1677 return got_error_from_errno("calloc");
1678 (*new_te)->mode = S_IFDIR0040000;
1679 if (strlcpy((*new_te)->name, de->d_name, sizeof((*new_te)->name)) >=
1680 sizeof((*new_te)->name)) {
1681 err = got_error(GOT_ERR_NO_SPACE9);
1682 goto done;
1683 }
1684 err = write_tree(&id, subdirpath, ignores, repo,
1685 progress_cb, progress_arg);
1686 if (err)
1687 goto done;
1688 memcpy(&(*new_te)->id, id, sizeof((*new_te)->id));
1689
1690done:
1691 free(id);
1692 free(subdirpath);
1693 if (err) {
1694 free(*new_te);
1695 *new_te = NULL((void *)0);
1696 }
1697 return err;
1698}
1699
1700static const struct got_error *
1701write_tree(struct got_object_id **new_tree_id, const char *path_dir,
1702 struct got_pathlist_head *ignores, struct got_repository *repo,
1703 got_repo_import_cb progress_cb, void *progress_arg)
1704{
1705 const struct got_error *err = NULL((void *)0);
1706 DIR *dir;
1707 struct dirent *de;
1708 int nentries;
1709 struct got_tree_entry *new_te = NULL((void *)0);
1710 struct got_pathlist_head paths;
1711 struct got_pathlist_entry *pe;
1712
1713 *new_tree_id = NULL((void *)0);
1714
1715 TAILQ_INIT(&paths)do { (&paths)->tqh_first = ((void *)0); (&paths)->
tqh_last = &(&paths)->tqh_first; } while (0);
1716
1717 dir = opendir(path_dir);
1718 if (dir == NULL((void *)0)) {
1719 err = got_error_from_errno2("opendir", path_dir);
1720 goto done;
1721 }
1722
1723 nentries = 0;
1724 while ((de = readdir(dir)) != NULL((void *)0)) {
1725 int ignore = 0;
1726 int type;
1727
1728 if (strcmp(de->d_name, ".") == 0 ||
1729 strcmp(de->d_name, "..") == 0)
1730 continue;
1731
1732 TAILQ_FOREACH(pe, ignores, entry)for((pe) = ((ignores)->tqh_first); (pe) != ((void *)0); (pe
) = ((pe)->entry.tqe_next)) {
1733 if (fnmatch(pe->path, de->d_name, 0) == 0) {
1734 ignore = 1;
1735 break;
1736 }
1737 }
1738 if (ignore)
1739 continue;
1740
1741 err = got_path_dirent_type(&type, path_dir, de);
1742 if (err)
1743 goto done;
1744
1745 if (type == DT_DIR4) {
1746 err = import_subdir(&new_te, de, path_dir,
1747 ignores, repo, progress_cb, progress_arg);
1748 if (err) {
1749 if (err->code != GOT_ERR_NO_TREE_ENTRY50)
1750 goto done;
1751 err = NULL((void *)0);
1752 continue;
1753 }
1754 } else if (type == DT_REG8 || type == DT_LNK10) {
1755 err = import_file(&new_te, de, path_dir, repo);
1756 if (err)
1757 goto done;
1758 } else
1759 continue;
1760
1761 err = insert_tree_entry(new_te, &paths);
1762 if (err)
1763 goto done;
1764 nentries++;
1765 }
1766
1767 if (TAILQ_EMPTY(&paths)(((&paths)->tqh_first) == ((void *)0))) {
1768 err = got_error_msg(GOT_ERR_NO_TREE_ENTRY50,
1769 "cannot create tree without any entries");
1770 goto done;
1771 }
1772
1773 TAILQ_FOREACH(pe, &paths, entry)for((pe) = ((&paths)->tqh_first); (pe) != ((void *)0);
(pe) = ((pe)->entry.tqe_next)) {
1774 struct got_tree_entry *te = pe->data;
1775 char *path;
1776 if (!S_ISREG(te->mode)((te->mode & 0170000) == 0100000) && !S_ISLNK(te->mode)((te->mode & 0170000) == 0120000))
1777 continue;
1778 if (asprintf(&path, "%s/%s", path_dir, pe->path) == -1) {
1779 err = got_error_from_errno("asprintf");
1780 goto done;
1781 }
1782 err = (*progress_cb)(progress_arg, path);
1783 free(path);
1784 if (err)
1785 goto done;
1786 }
1787
1788 err = got_object_tree_create(new_tree_id, &paths, nentries, repo);
1789done:
1790 if (dir)
1791 closedir(dir);
1792 got_pathlist_free(&paths);
1793 return err;
1794}
1795
1796const struct got_error *
1797got_repo_import(struct got_object_id **new_commit_id, const char *path_dir,
1798 const char *logmsg, const char *author, struct got_pathlist_head *ignores,
1799 struct got_repository *repo, got_repo_import_cb progress_cb,
1800 void *progress_arg)
1801{
1802 const struct got_error *err;
1803 struct got_object_id *new_tree_id;
1804
1805 err = write_tree(&new_tree_id, path_dir, ignores, repo,
1806 progress_cb, progress_arg);
1807 if (err)
1808 return err;
1809
1810 err = got_object_commit_create(new_commit_id, new_tree_id, NULL((void *)0), 0,
1811 author, time(NULL((void *)0)), author, time(NULL((void *)0)), logmsg, repo);
1812 free(new_tree_id);
1813 return err;
1814}
1815
1816const struct got_error *
1817got_repo_get_loose_object_info(int *nobjects, off_t *ondisk_size,
1818 struct got_repository *repo)
1819{
1820 const struct got_error *err = NULL((void *)0);
1821 char *path_objects = NULL((void *)0), *path = NULL((void *)0);
1822 DIR *dir = NULL((void *)0);
1823 struct got_object_id id;
1824 int i;
1825
1826 *nobjects = 0;
1827 *ondisk_size = 0;
1828
1829 path_objects = got_repo_get_path_objects(repo);
1830 if (path_objects == NULL((void *)0))
1831 return got_error_from_errno("got_repo_get_path_objects");
1832
1833 for (i = 0; i <= 0xff; i++) {
1834 struct dirent *dent;
1835
1836 if (asprintf(&path, "%s/%.2x", path_objects, i) == -1) {
1837 err = got_error_from_errno("asprintf");
1838 break;
1839 }
1840
1841 dir = opendir(path);
1842 if (dir == NULL((void *)0)) {
1843 if (errno(*__errno()) == ENOENT2) {
1844 err = NULL((void *)0);
1845 continue;
1846 }
1847 err = got_error_from_errno2("opendir", path);
1848 break;
1849 }
1850
1851 while ((dent = readdir(dir)) != NULL((void *)0)) {
1852 char *id_str;
1853 int fd;
1854 struct stat sb;
1855
1856 if (strcmp(dent->d_name, ".") == 0 ||
1857 strcmp(dent->d_name, "..") == 0)
1858 continue;
1859
1860 if (asprintf(&id_str, "%.2x%s", i, dent->d_name) == -1) {
1861 err = got_error_from_errno("asprintf");
1862 goto done;
1863 }
1864
1865 if (!got_parse_sha1_digest(id.sha1, id_str)) {
1866 free(id_str);
1867 continue;
1868 }
1869 free(id_str);
1870
1871 err = got_object_open_loose_fd(&fd, &id, repo);
1872 if (err)
1873 goto done;
1874
1875 if (fstat(fd, &sb) == -1) {
1876 err = got_error_from_errno("fstat");
1877 close(fd);
1878 goto done;
1879 }
1880 (*nobjects)++;
1881 (*ondisk_size) += sb.st_size;
1882
1883 if (close(fd) == -1) {
1884 err = got_error_from_errno("close");
1885 goto done;
1886 }
1887 }
1888
1889 if (closedir(dir) != 0) {
1890 err = got_error_from_errno("closedir");
1891 goto done;
1892 }
1893 dir = NULL((void *)0);
1894
1895 free(path);
1896 path = NULL((void *)0);
1897 }
1898done:
1899 if (dir && closedir(dir) != 0 && err == NULL((void *)0))
1900 err = got_error_from_errno("closedir");
1901
1902 if (err) {
1903 *nobjects = 0;
1904 *ondisk_size = 0;
1905 }
1906 free(path_objects);
1907 free(path);
1908 return err;
1909}
1910
1911const struct got_error *
1912got_repo_get_packfile_info(int *npackfiles, int *nobjects,
1913 off_t *total_packsize, struct got_repository *repo)
1914{
1915 const struct got_error *err;
1916 DIR *packdir = NULL((void *)0);
1917 struct dirent *dent;
1918 struct got_packidx *packidx = NULL((void *)0);
1919 char *path_packidx;
1920 char *path_packfile;
1921 int packdir_fd;
1922 struct stat sb;
1923
1924 *npackfiles = 0;
1925 *nobjects = 0;
1926 *total_packsize = 0;
1927
1928 packdir_fd = openat(got_repo_get_fd(repo),
1929 GOT_OBJECTS_PACK_DIR"objects/pack", O_DIRECTORY0x20000);
1930 if (packdir_fd == -1) {
1931 return got_error_from_errno_fmt("openat: %s/%s",
1932 got_repo_get_path_git_dir(repo),
1933 GOT_OBJECTS_PACK_DIR"objects/pack");
1934 }
1935
1936 packdir = fdopendir(packdir_fd);
1937 if (packdir == NULL((void *)0)) {
1938 err = got_error_from_errno("fdopendir");
1939 goto done;
1940 }
1941
1942 while ((dent = readdir(packdir)) != NULL((void *)0)) {
1943 if (!is_packidx_filename(dent->d_name, dent->d_namlen))
1944 continue;
1945
1946 if (asprintf(&path_packidx, "%s/%s", GOT_OBJECTS_PACK_DIR"objects/pack",
1947 dent->d_name) == -1) {
1948 err = got_error_from_errno("asprintf");
1949 goto done;
1950 }
1951
1952 err = got_packidx_open(&packidx, got_repo_get_fd(repo),
1953 path_packidx, 0);
1954 free(path_packidx);
1955 if (err)
1956 goto done;
1957
1958 if (fstat(packidx->fd, &sb) == -1)
1959 goto done;
1960 *total_packsize += sb.st_size;
1961
1962 err = got_packidx_get_packfile_path(&path_packfile, packidx);
1963 if (err)
1964 goto done;
1965
1966 if (fstatat(got_repo_get_fd(repo), path_packfile, &sb,
1967 0) == -1) {
1968 free(path_packfile);
1969 goto done;
1970 }
1971 free(path_packfile);
1972 *total_packsize += sb.st_size;
1973
1974 *nobjects += be32toh(packidx->hdr.fanout_table[0xff])(__uint32_t)(__builtin_constant_p(packidx->hdr.fanout_table
[0xff]) ? (__uint32_t)(((__uint32_t)(packidx->hdr.fanout_table
[0xff]) & 0xff) << 24 | ((__uint32_t)(packidx->hdr
.fanout_table[0xff]) & 0xff00) << 8 | ((__uint32_t)
(packidx->hdr.fanout_table[0xff]) & 0xff0000) >>
8 | ((__uint32_t)(packidx->hdr.fanout_table[0xff]) & 0xff000000
) >> 24) : __swap32md(packidx->hdr.fanout_table[0xff
]));
1975
1976 (*npackfiles)++;
1977
1978 got_packidx_close(packidx);
1979 packidx = NULL((void *)0);
1980 }
1981done:
1982 if (packidx)
1983 got_packidx_close(packidx);
1984 if (packdir && closedir(packdir) != 0 && err == NULL((void *)0))
1985 err = got_error_from_errno("closedir");
1986 if (err) {
1987 *npackfiles = 0;
1988 *nobjects = 0;
1989 *total_packsize = 0;
1990 }
1991 return err;
1992}