2 0a0a3048 2018-01-10 stsp * Copyright (c) 2018 Stefan Sperling <stsp@openbsd.org>
4 0a0a3048 2018-01-10 stsp * Permission to use, copy, modify, and distribute this software for any
5 0a0a3048 2018-01-10 stsp * purpose with or without fee is hereby granted, provided that the above
6 0a0a3048 2018-01-10 stsp * copyright notice and this permission notice appear in all copies.
8 0a0a3048 2018-01-10 stsp * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 0a0a3048 2018-01-10 stsp * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 0a0a3048 2018-01-10 stsp * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 0a0a3048 2018-01-10 stsp * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 0a0a3048 2018-01-10 stsp * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 0a0a3048 2018-01-10 stsp * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 0a0a3048 2018-01-10 stsp * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 a1fd68d8 2018-01-12 stsp #include <sys/types.h>
18 0a0a3048 2018-01-10 stsp #include <sys/stat.h>
19 a1fd68d8 2018-01-12 stsp #include <sys/queue.h>
21 a1fd68d8 2018-01-12 stsp #include <dirent.h>
22 7e656b93 2018-03-17 stsp #include <fcntl.h>
23 a1fd68d8 2018-01-12 stsp #include <errno.h>
24 0a0a3048 2018-01-10 stsp #include <stdio.h>
25 a1fd68d8 2018-01-12 stsp #include <stdint.h>
26 0a0a3048 2018-01-10 stsp #include <stdlib.h>
27 0a0a3048 2018-01-10 stsp #include <string.h>
28 0a0a3048 2018-01-10 stsp #include <limits.h>
29 0a0a3048 2018-01-10 stsp #include <sha1.h>
30 0a0a3048 2018-01-10 stsp #include <endian.h>
31 a1fd68d8 2018-01-12 stsp #include <zlib.h>
33 0a0a3048 2018-01-10 stsp #include "got_error.h"
34 a1fd68d8 2018-01-12 stsp #include "got_object.h"
35 a1fd68d8 2018-01-12 stsp #include "got_repository.h"
36 511a516b 2018-05-19 stsp #include "got_opentemp.h"
38 718b3ab0 2018-03-17 stsp #include "got_lib_sha1.h"
39 718b3ab0 2018-03-17 stsp #include "got_lib_pack.h"
40 718b3ab0 2018-03-17 stsp #include "got_lib_path.h"
41 718b3ab0 2018-03-17 stsp #include "got_lib_delta.h"
42 718b3ab0 2018-03-17 stsp #include "got_lib_zbuf.h"
43 718b3ab0 2018-03-17 stsp #include "got_lib_object.h"
44 718b3ab0 2018-03-17 stsp #include "got_lib_repository.h"
46 79b11c62 2018-03-09 stsp #ifndef nitems
47 79b11c62 2018-03-09 stsp #define nitems(_a) (sizeof(_a) / sizeof((_a)[0]))
50 a1fd68d8 2018-01-12 stsp #define GOT_PACK_PREFIX "pack-"
51 a1fd68d8 2018-01-12 stsp #define GOT_PACKFILE_SUFFIX ".pack"
52 a1fd68d8 2018-01-12 stsp #define GOT_PACKIDX_SUFFIX ".idx"
53 a1fd68d8 2018-01-12 stsp #define GOT_PACKFILE_NAMELEN (strlen(GOT_PACK_PREFIX) + \
54 a1fd68d8 2018-01-12 stsp SHA1_DIGEST_STRING_LENGTH - 1 + \
55 a1fd68d8 2018-01-12 stsp strlen(GOT_PACKFILE_SUFFIX))
56 a1fd68d8 2018-01-12 stsp #define GOT_PACKIDX_NAMELEN (strlen(GOT_PACK_PREFIX) + \
57 a1fd68d8 2018-01-12 stsp SHA1_DIGEST_STRING_LENGTH - 1 + \
58 a1fd68d8 2018-01-12 stsp strlen(GOT_PACKIDX_SUFFIX))
61 a1fd68d8 2018-01-12 stsp #define MIN(_a,_b) ((_a) < (_b) ? (_a) : (_b))
64 0a0a3048 2018-01-10 stsp static const struct got_error *
65 0a0a3048 2018-01-10 stsp verify_fanout_table(uint32_t *fanout_table)
69 0a0a3048 2018-01-10 stsp for (i = 0; i < 0xff - 1; i++) {
70 a1fd68d8 2018-01-12 stsp if (be32toh(fanout_table[i]) > be32toh(fanout_table[i + 1]))
71 0a0a3048 2018-01-10 stsp return got_error(GOT_ERR_BAD_PACKIDX);
74 0a0a3048 2018-01-10 stsp return NULL;
77 24541888 2018-01-10 stsp static const struct got_error *
78 1c7e24f1 2018-04-02 stsp get_packfile_size(size_t *size, const char *path)
80 0a0a3048 2018-01-10 stsp struct stat sb;
85 1c7e24f1 2018-04-02 stsp dot = strrchr(path, '.');
86 0a0a3048 2018-01-10 stsp if (dot == NULL)
87 0a0a3048 2018-01-10 stsp return got_error(GOT_ERR_BAD_PATH);
89 1c7e24f1 2018-04-02 stsp /* Path must point to a pack index or to a pack file. */
90 1c7e24f1 2018-04-02 stsp if (strcmp(dot, ".idx") == 0) {
91 97128b57 2018-04-02 stsp const struct got_error *err = NULL;
92 1c7e24f1 2018-04-02 stsp char *path_pack;
93 1c7e24f1 2018-04-02 stsp char base_path[PATH_MAX];
95 1c7e24f1 2018-04-02 stsp /* Convert pack index path to pack file path. */
96 1c7e24f1 2018-04-02 stsp if (strlcpy(base_path, path, PATH_MAX) > PATH_MAX)
97 1c7e24f1 2018-04-02 stsp return got_error(GOT_ERR_NO_SPACE);
98 1c7e24f1 2018-04-02 stsp dot = strrchr(base_path, '.');
99 1c7e24f1 2018-04-02 stsp if (dot == NULL)
100 1c7e24f1 2018-04-02 stsp return got_error(GOT_ERR_BAD_PATH);
101 1c7e24f1 2018-04-02 stsp *dot = '\0';
102 1c7e24f1 2018-04-02 stsp if (asprintf(&path_pack, "%s.pack", base_path) == -1)
103 1c7e24f1 2018-04-02 stsp return got_error_from_errno();
105 97128b57 2018-04-02 stsp if (stat(path_pack, &sb) != 0)
106 97128b57 2018-04-02 stsp err = got_error_from_errno();
107 0a0a3048 2018-01-10 stsp free(path_pack);
109 97128b57 2018-04-02 stsp return err;
110 1c7e24f1 2018-04-02 stsp } else if (strcmp(dot, ".pack") == 0) {
111 1c7e24f1 2018-04-02 stsp if (stat(path, &sb) != 0)
112 1c7e24f1 2018-04-02 stsp return got_error_from_errno();
114 1c7e24f1 2018-04-02 stsp return got_error(GOT_ERR_BAD_PATH);
116 0a0a3048 2018-01-10 stsp *size = sb.st_size;
120 0a0a3048 2018-01-10 stsp const struct got_error *
121 0a0a3048 2018-01-10 stsp got_packidx_open(struct got_packidx_v2_hdr **packidx, const char *path)
123 0a0a3048 2018-01-10 stsp struct got_packidx_v2_hdr *p;
125 0a0a3048 2018-01-10 stsp const struct got_error *err = NULL;
126 0a0a3048 2018-01-10 stsp size_t n, nobj, packfile_size;
127 0ebaf008 2018-01-10 stsp SHA1_CTX ctx;
128 0ebaf008 2018-01-10 stsp uint8_t sha1[SHA1_DIGEST_LENGTH];
130 0ebaf008 2018-01-10 stsp SHA1Init(&ctx);
132 0a0a3048 2018-01-10 stsp f = fopen(path, "rb");
133 0a0a3048 2018-01-10 stsp if (f == NULL)
134 9feb4ff2 2018-03-14 stsp return got_error_from_errno();
136 0a0a3048 2018-01-10 stsp err = get_packfile_size(&packfile_size, path);
138 0a0a3048 2018-01-10 stsp return err;
140 0a0a3048 2018-01-10 stsp p = calloc(1, sizeof(*p));
141 0a0a3048 2018-01-10 stsp if (p == NULL) {
142 0a585a0d 2018-03-17 stsp err = got_error_from_errno();
146 0a0a3048 2018-01-10 stsp n = fread(&p->magic, sizeof(p->magic), 1, f);
147 0a0a3048 2018-01-10 stsp if (n != 1) {
148 8251fdbc 2018-01-12 stsp err = got_ferror(f, GOT_ERR_BAD_PACKIDX);
152 0a0a3048 2018-01-10 stsp if (betoh32(p->magic) != GOT_PACKIDX_V2_MAGIC) {
153 0a0a3048 2018-01-10 stsp err = got_error(GOT_ERR_BAD_PACKIDX);
157 0ebaf008 2018-01-10 stsp SHA1Update(&ctx, (uint8_t *)&p->magic, sizeof(p->magic));
159 0a0a3048 2018-01-10 stsp n = fread(&p->version, sizeof(p->version), 1, f);
160 0a0a3048 2018-01-10 stsp if (n != 1) {
161 8251fdbc 2018-01-12 stsp err = got_ferror(f, GOT_ERR_BAD_PACKIDX);
165 0a0a3048 2018-01-10 stsp if (betoh32(p->version) != GOT_PACKIDX_VERSION) {
166 0a0a3048 2018-01-10 stsp err = got_error(GOT_ERR_BAD_PACKIDX);
170 0ebaf008 2018-01-10 stsp SHA1Update(&ctx, (uint8_t *)&p->version, sizeof(p->version));
172 0a0a3048 2018-01-10 stsp n = fread(&p->fanout_table, sizeof(p->fanout_table), 1, f);
173 0a0a3048 2018-01-10 stsp if (n != 1) {
174 8251fdbc 2018-01-12 stsp err = got_ferror(f, GOT_ERR_BAD_PACKIDX);
178 0a0a3048 2018-01-10 stsp err = verify_fanout_table(p->fanout_table);
182 0ebaf008 2018-01-10 stsp SHA1Update(&ctx, (uint8_t *)p->fanout_table, sizeof(p->fanout_table));
184 0a0a3048 2018-01-10 stsp nobj = betoh32(p->fanout_table[0xff]);
186 0a0a3048 2018-01-10 stsp p->sorted_ids = calloc(nobj, sizeof(*p->sorted_ids));
187 0a0a3048 2018-01-10 stsp if (p->sorted_ids == NULL) {
188 0a585a0d 2018-03-17 stsp err = got_error_from_errno();
192 0a0a3048 2018-01-10 stsp n = fread(p->sorted_ids, sizeof(*p->sorted_ids), nobj, f);
193 0a0a3048 2018-01-10 stsp if (n != nobj) {
194 8251fdbc 2018-01-12 stsp err = got_ferror(f, GOT_ERR_BAD_PACKIDX);
198 0ebaf008 2018-01-10 stsp SHA1Update(&ctx, (uint8_t *)p->sorted_ids,
199 0ebaf008 2018-01-10 stsp nobj * sizeof(*p->sorted_ids));
201 a1fd68d8 2018-01-12 stsp p->crc32 = calloc(nobj, sizeof(*p->crc32));
202 a1fd68d8 2018-01-12 stsp if (p->crc32 == NULL) {
203 0a585a0d 2018-03-17 stsp err = got_error_from_errno();
207 a1fd68d8 2018-01-12 stsp n = fread(p->crc32, sizeof(*p->crc32), nobj, f);
208 0a0a3048 2018-01-10 stsp if (n != nobj) {
209 8251fdbc 2018-01-12 stsp err = got_ferror(f, GOT_ERR_BAD_PACKIDX);
213 a1fd68d8 2018-01-12 stsp SHA1Update(&ctx, (uint8_t *)p->crc32, nobj * sizeof(*p->crc32));
215 a1fd68d8 2018-01-12 stsp p->offsets = calloc(nobj, sizeof(*p->offsets));
216 a1fd68d8 2018-01-12 stsp if (p->offsets == NULL) {
217 0a585a0d 2018-03-17 stsp err = got_error_from_errno();
221 a1fd68d8 2018-01-12 stsp n = fread(p->offsets, sizeof(*p->offsets), nobj, f);
222 0a0a3048 2018-01-10 stsp if (n != nobj) {
223 8251fdbc 2018-01-12 stsp err = got_ferror(f, GOT_ERR_BAD_PACKIDX);
227 a1fd68d8 2018-01-12 stsp SHA1Update(&ctx, (uint8_t *)p->offsets, nobj * sizeof(*p->offsets));
229 0a0a3048 2018-01-10 stsp /* Large file offsets are contained only in files > 2GB. */
230 b0517dd0 2018-01-10 stsp if (packfile_size <= 0x80000000)
231 0a0a3048 2018-01-10 stsp goto checksum;
233 0a0a3048 2018-01-10 stsp p->large_offsets = calloc(nobj, sizeof(*p->large_offsets));
234 0a0a3048 2018-01-10 stsp if (p->large_offsets == NULL) {
235 0a585a0d 2018-03-17 stsp err = got_error_from_errno();
239 0a0a3048 2018-01-10 stsp n = fread(p->large_offsets, sizeof(*p->large_offsets), nobj, f);
240 0a0a3048 2018-01-10 stsp if (n != nobj) {
241 8251fdbc 2018-01-12 stsp err = got_ferror(f, GOT_ERR_BAD_PACKIDX);
245 0ebaf008 2018-01-10 stsp SHA1Update(&ctx, (uint8_t*)p->large_offsets,
246 0ebaf008 2018-01-10 stsp nobj * sizeof(*p->large_offsets));
249 0a0a3048 2018-01-10 stsp n = fread(&p->trailer, sizeof(p->trailer), 1, f);
250 0a0a3048 2018-01-10 stsp if (n != 1) {
251 8251fdbc 2018-01-12 stsp err = got_ferror(f, GOT_ERR_BAD_PACKIDX);
255 a1fd68d8 2018-01-12 stsp SHA1Update(&ctx, p->trailer.packfile_sha1, SHA1_DIGEST_LENGTH);
256 0ebaf008 2018-01-10 stsp SHA1Final(sha1, &ctx);
257 a1fd68d8 2018-01-12 stsp if (memcmp(p->trailer.packidx_sha1, sha1, SHA1_DIGEST_LENGTH) != 0)
258 0ebaf008 2018-01-10 stsp err = got_error(GOT_ERR_PACKIDX_CSUM);
262 0a0a3048 2018-01-10 stsp got_packidx_close(p);
264 0a0a3048 2018-01-10 stsp *packidx = p;
265 0a0a3048 2018-01-10 stsp return err;
269 0a0a3048 2018-01-10 stsp got_packidx_close(struct got_packidx_v2_hdr *packidx)
271 0a0a3048 2018-01-10 stsp free(packidx->sorted_ids);
272 0a0a3048 2018-01-10 stsp free(packidx->offsets);
273 0a0a3048 2018-01-10 stsp free(packidx->crc32);
274 0a0a3048 2018-01-10 stsp free(packidx->large_offsets);
275 0a0a3048 2018-01-10 stsp free(packidx);
279 a1fd68d8 2018-01-12 stsp is_packidx_filename(const char *name, size_t len)
281 a1fd68d8 2018-01-12 stsp if (len != GOT_PACKIDX_NAMELEN)
284 a1fd68d8 2018-01-12 stsp if (strncmp(name, GOT_PACK_PREFIX, strlen(GOT_PACK_PREFIX)) != 0)
287 a1fd68d8 2018-01-12 stsp if (strcmp(name + strlen(GOT_PACK_PREFIX) +
288 a1fd68d8 2018-01-12 stsp SHA1_DIGEST_STRING_LENGTH - 1, GOT_PACKIDX_SUFFIX) != 0)
294 a1fd68d8 2018-01-12 stsp static off_t
295 a1fd68d8 2018-01-12 stsp get_object_offset(struct got_packidx_v2_hdr *packidx, int idx)
297 a1fd68d8 2018-01-12 stsp uint32_t totobj = betoh32(packidx->fanout_table[0xff]);
298 a1fd68d8 2018-01-12 stsp uint32_t offset = betoh32(packidx->offsets[idx]);
299 a1fd68d8 2018-01-12 stsp if (offset & GOT_PACKIDX_OFFSET_VAL_IS_LARGE_IDX) {
300 a1fd68d8 2018-01-12 stsp uint64_t loffset;
301 a1fd68d8 2018-01-12 stsp idx = offset & GOT_PACKIDX_OFFSET_VAL_MASK;
302 a1fd68d8 2018-01-12 stsp if (idx < 0 || idx > totobj || packidx->large_offsets == NULL)
304 a1fd68d8 2018-01-12 stsp loffset = betoh64(packidx->large_offsets[idx]);
305 a1fd68d8 2018-01-12 stsp return (loffset > INT64_MAX ? -1 : (off_t)loffset);
307 a1fd68d8 2018-01-12 stsp return (off_t)(offset & GOT_PACKIDX_OFFSET_VAL_MASK);
310 72eb3431 2018-04-01 stsp static const struct got_error *
311 72eb3431 2018-04-01 stsp get_packfile_path(char **path_packfile, struct got_repository *repo,
312 72eb3431 2018-04-01 stsp struct got_packidx_v2_hdr *packidx);
315 72eb3431 2018-04-01 stsp get_object_idx(struct got_packidx_v2_hdr *packidx, struct got_object_id *id, struct got_repository *repo)
317 a1fd68d8 2018-01-12 stsp u_int8_t id0 = id->sha1[0];
318 a1fd68d8 2018-01-12 stsp uint32_t totobj = betoh32(packidx->fanout_table[0xff]);
321 a1fd68d8 2018-01-12 stsp if (id0 > 0)
322 a1fd68d8 2018-01-12 stsp i = betoh32(packidx->fanout_table[id0 - 1]);
324 a1fd68d8 2018-01-12 stsp while (i < totobj) {
325 6c00b545 2018-01-17 stsp struct got_object_id *oid = &packidx->sorted_ids[i];
326 2b2ca9f0 2018-01-13 stsp int cmp = got_object_id_cmp(id, oid);
328 16dcbf91 2018-04-01 stsp if (cmp == 0)
336 79b11c62 2018-03-09 stsp static struct got_packidx_v2_hdr *
337 79b11c62 2018-03-09 stsp dup_packidx(struct got_packidx_v2_hdr *packidx)
339 79b11c62 2018-03-09 stsp struct got_packidx_v2_hdr *p;
340 79b11c62 2018-03-09 stsp size_t nobj;
342 79b11c62 2018-03-09 stsp p = calloc(1, sizeof(*p));
343 79b11c62 2018-03-09 stsp if (p == NULL)
344 79b11c62 2018-03-09 stsp return NULL;
346 79b11c62 2018-03-09 stsp memcpy(p, packidx, sizeof(*p));
347 79b11c62 2018-03-09 stsp p->sorted_ids = NULL;
348 79b11c62 2018-03-09 stsp p->crc32 = NULL;
349 79b11c62 2018-03-09 stsp p->offsets = NULL;
350 79b11c62 2018-03-09 stsp p->large_offsets = NULL;
352 79b11c62 2018-03-09 stsp nobj = betoh32(p->fanout_table[0xff]);
354 79b11c62 2018-03-09 stsp p->sorted_ids = calloc(nobj, sizeof(*p->sorted_ids));
355 79b11c62 2018-03-09 stsp if (p->sorted_ids == NULL)
357 dfb54902 2018-04-02 stsp memcpy(p->sorted_ids, packidx->sorted_ids,
358 dfb54902 2018-04-02 stsp nobj * sizeof(*p->sorted_ids));
360 79b11c62 2018-03-09 stsp p->crc32 = calloc(nobj, sizeof(*p->crc32));
361 79b11c62 2018-03-09 stsp if (p->crc32 == NULL)
363 79b11c62 2018-03-09 stsp memcpy(p->crc32, packidx->crc32, nobj * sizeof(*p->crc32));
365 79b11c62 2018-03-09 stsp p->offsets = calloc(nobj, sizeof(*p->offsets));
366 79b11c62 2018-03-09 stsp if (p->offsets == NULL)
368 79b11c62 2018-03-09 stsp memcpy(p->offsets, packidx->offsets, nobj * sizeof(*p->offsets));
370 79b11c62 2018-03-09 stsp if (p->large_offsets) {
371 79b11c62 2018-03-09 stsp p->large_offsets = calloc(nobj, sizeof(*p->large_offsets));
372 79b11c62 2018-03-09 stsp if (p->large_offsets == NULL)
374 79b11c62 2018-03-09 stsp memcpy(p->large_offsets, packidx->large_offsets,
375 79b11c62 2018-03-09 stsp nobj * sizeof(*p->large_offsets));
381 79b11c62 2018-03-09 stsp free(p->large_offsets);
382 79b11c62 2018-03-09 stsp free(p->offsets);
383 79b11c62 2018-03-09 stsp free(p->crc32);
384 79b11c62 2018-03-09 stsp free(p->sorted_ids);
386 79b11c62 2018-03-09 stsp return NULL;
389 65cf1e80 2018-03-16 stsp static void
390 65cf1e80 2018-03-16 stsp cache_packidx(struct got_packidx_v2_hdr *packidx, struct got_repository *repo)
394 65cf1e80 2018-03-16 stsp for (i = 0; i < nitems(repo->packidx_cache); i++) {
395 65cf1e80 2018-03-16 stsp if (repo->packidx_cache[i] == NULL)
399 65cf1e80 2018-03-16 stsp if (i == nitems(repo->packidx_cache)) {
400 65cf1e80 2018-03-16 stsp got_packidx_close(repo->packidx_cache[i - 1]);
401 65cf1e80 2018-03-16 stsp memmove(&repo->packidx_cache[1], &repo->packidx_cache[0],
402 65cf1e80 2018-03-16 stsp sizeof(repo->packidx_cache) -
403 65cf1e80 2018-03-16 stsp sizeof(repo->packidx_cache[0]));
407 65cf1e80 2018-03-16 stsp repo->packidx_cache[i] = dup_packidx(packidx);
410 6b9c9673 2018-01-23 stsp static const struct got_error *
411 6b9c9673 2018-01-23 stsp search_packidx(struct got_packidx_v2_hdr **packidx, int *idx,
412 6b9c9673 2018-01-23 stsp struct got_repository *repo, struct got_object_id *id)
414 6b9c9673 2018-01-23 stsp const struct got_error *err;
415 6b9c9673 2018-01-23 stsp char *path_packdir;
416 6b9c9673 2018-01-23 stsp DIR *packdir;
417 6b9c9673 2018-01-23 stsp struct dirent *dent;
418 6b9c9673 2018-01-23 stsp char *path_packidx;
421 65cf1e80 2018-03-16 stsp /* Search pack index cache. */
422 65cf1e80 2018-03-16 stsp for (i = 0; i < nitems(repo->packidx_cache); i++) {
423 65cf1e80 2018-03-16 stsp if (repo->packidx_cache[i] == NULL)
425 72eb3431 2018-04-01 stsp *idx = get_object_idx(repo->packidx_cache[i], id, repo);
426 79b11c62 2018-03-09 stsp if (*idx != -1) {
427 6bb255dc 2018-03-17 stsp *packidx = repo->packidx_cache[i];
428 79b11c62 2018-03-09 stsp return NULL;
431 79b11c62 2018-03-09 stsp /* No luck. Search the filesystem. */
433 6b9c9673 2018-01-23 stsp path_packdir = got_repo_get_path_objects_pack(repo);
434 6b9c9673 2018-01-23 stsp if (path_packdir == NULL)
435 0a585a0d 2018-03-17 stsp return got_error_from_errno();
437 6b9c9673 2018-01-23 stsp packdir = opendir(path_packdir);
438 6b9c9673 2018-01-23 stsp if (packdir == NULL) {
439 6b9c9673 2018-01-23 stsp err = got_error_from_errno();
443 6b9c9673 2018-01-23 stsp while ((dent = readdir(packdir)) != NULL) {
444 6b9c9673 2018-01-23 stsp if (!is_packidx_filename(dent->d_name, dent->d_namlen))
447 6b9c9673 2018-01-23 stsp if (asprintf(&path_packidx, "%s/%s", path_packdir,
448 6b9c9673 2018-01-23 stsp dent->d_name) == -1) {
449 0a585a0d 2018-03-17 stsp err = got_error_from_errno();
453 6b9c9673 2018-01-23 stsp err = got_packidx_open(packidx, path_packidx);
454 6b9c9673 2018-01-23 stsp free(path_packidx);
458 72eb3431 2018-04-01 stsp *idx = get_object_idx(*packidx, id, repo);
459 6b9c9673 2018-01-23 stsp if (*idx != -1) {
460 6b9c9673 2018-01-23 stsp err = NULL; /* found the object */
461 65cf1e80 2018-03-16 stsp cache_packidx(*packidx, repo);
465 6b9c9673 2018-01-23 stsp got_packidx_close(*packidx);
466 6b9c9673 2018-01-23 stsp *packidx = NULL;
469 6b9c9673 2018-01-23 stsp err = got_error(GOT_ERR_NO_OBJ);
471 6b9c9673 2018-01-23 stsp free(path_packdir);
472 ef715580 2018-01-26 stsp if (packdir && closedir(packdir) != 0 && err == 0)
473 6b9c9673 2018-01-23 stsp err = got_error_from_errno();
474 6b9c9673 2018-01-23 stsp return err;
477 c7fe698a 2018-01-23 stsp static const struct got_error *
478 65cf1e80 2018-03-16 stsp get_packfile_path(char **path_packfile, struct got_repository *repo,
479 65cf1e80 2018-03-16 stsp struct got_packidx_v2_hdr *packidx)
481 65cf1e80 2018-03-16 stsp char *path_packdir;
482 65cf1e80 2018-03-16 stsp char hex[SHA1_DIGEST_STRING_LENGTH];
483 65cf1e80 2018-03-16 stsp char *sha1str;
485 65cf1e80 2018-03-16 stsp path_packdir = got_repo_get_path_objects_pack(repo);
486 65cf1e80 2018-03-16 stsp if (path_packdir == NULL)
487 0a585a0d 2018-03-17 stsp return got_error_from_errno();
489 65cf1e80 2018-03-16 stsp sha1str = got_sha1_digest_to_str(packidx->trailer.packfile_sha1,
490 65cf1e80 2018-03-16 stsp hex, sizeof(hex));
491 65cf1e80 2018-03-16 stsp if (sha1str == NULL)
492 65cf1e80 2018-03-16 stsp return got_error(GOT_ERR_PACKIDX_CSUM);
494 65cf1e80 2018-03-16 stsp if (asprintf(path_packfile, "%s/%s%s%s", path_packdir,
495 65cf1e80 2018-03-16 stsp GOT_PACK_PREFIX, sha1str, GOT_PACKFILE_SUFFIX) == -1) {
496 65cf1e80 2018-03-16 stsp *path_packfile = NULL;
497 0a585a0d 2018-03-17 stsp return got_error_from_errno();
500 65cf1e80 2018-03-16 stsp return NULL;
503 65cf1e80 2018-03-16 stsp const struct got_error *
504 8b2180d4 2018-04-26 stsp read_packfile_hdr(int fd, struct got_packidx_v2_hdr *packidx)
506 65cf1e80 2018-03-16 stsp const struct got_error *err = NULL;
507 65cf1e80 2018-03-16 stsp uint32_t totobj = betoh32(packidx->fanout_table[0xff]);
508 65cf1e80 2018-03-16 stsp struct got_packfile_hdr hdr;
511 8b2180d4 2018-04-26 stsp n = read(fd, &hdr, sizeof(hdr));
513 8b2180d4 2018-04-26 stsp return got_error_from_errno();
514 8b2180d4 2018-04-26 stsp if (n != sizeof(hdr))
515 8b2180d4 2018-04-26 stsp return got_error(GOT_ERR_BAD_PACKFILE);
517 65cf1e80 2018-03-16 stsp if (betoh32(hdr.signature) != GOT_PACKFILE_SIGNATURE ||
518 65cf1e80 2018-03-16 stsp betoh32(hdr.version) != GOT_PACKFILE_VERSION ||
519 65cf1e80 2018-03-16 stsp betoh32(hdr.nobjects) != totobj)
520 65cf1e80 2018-03-16 stsp err = got_error(GOT_ERR_BAD_PACKFILE);
522 65cf1e80 2018-03-16 stsp return err;
525 7e656b93 2018-03-17 stsp static const struct got_error *
526 8b2180d4 2018-04-26 stsp open_packfile(int *fd, const char *path_packfile,
527 7e656b93 2018-03-17 stsp struct got_repository *repo, struct got_packidx_v2_hdr *packidx)
529 7e656b93 2018-03-17 stsp const struct got_error *err = NULL;
531 8b2180d4 2018-04-26 stsp *fd = open(path_packfile, O_RDONLY | O_NOFOLLOW, GOT_DEFAULT_FILE_MODE);
532 8b2180d4 2018-04-26 stsp if (*fd == -1)
533 8b2180d4 2018-04-26 stsp return got_error_from_errno();
535 7e656b93 2018-03-17 stsp if (packidx) {
536 8b2180d4 2018-04-26 stsp err = read_packfile_hdr(*fd, packidx);
538 8b2180d4 2018-04-26 stsp close(*fd);
542 7e656b93 2018-03-17 stsp return err;
546 7e656b93 2018-03-17 stsp got_pack_close(struct got_pack *pack)
548 8b2180d4 2018-04-26 stsp close(pack->fd);
549 8b2180d4 2018-04-26 stsp pack->fd = -1;
550 4589e373 2018-03-17 stsp free(pack->path_packfile);
551 4589e373 2018-03-17 stsp pack->path_packfile = NULL;
552 4589e373 2018-03-17 stsp pack->filesize = 0;
555 7e656b93 2018-03-17 stsp static const struct got_error *
556 7e656b93 2018-03-17 stsp cache_pack(struct got_pack **packp, const char *path_packfile,
557 7e656b93 2018-03-17 stsp struct got_packidx_v2_hdr *packidx, struct got_repository *repo)
559 7e656b93 2018-03-17 stsp const struct got_error *err = NULL;
560 7e656b93 2018-03-17 stsp struct got_pack *pack = NULL;
564 7e656b93 2018-03-17 stsp *packp = NULL;
566 7e656b93 2018-03-17 stsp for (i = 0; i < nitems(repo->packs); i++) {
567 7e656b93 2018-03-17 stsp pack = &repo->packs[i];
568 7e656b93 2018-03-17 stsp if (pack->path_packfile == NULL)
570 7e656b93 2018-03-17 stsp if (strcmp(pack->path_packfile, path_packfile) == 0)
571 7e656b93 2018-03-17 stsp return NULL;
574 7e656b93 2018-03-17 stsp if (i == nitems(repo->packs) - 1) {
575 7e656b93 2018-03-17 stsp got_pack_close(&repo->packs[i - 1]);
576 7e656b93 2018-03-17 stsp memmove(&repo->packs[1], &repo->packs[0],
577 7e656b93 2018-03-17 stsp sizeof(repo->packs) - sizeof(repo->packs[0]));
581 7e656b93 2018-03-17 stsp pack = &repo->packs[i];
583 7e656b93 2018-03-17 stsp pack->path_packfile = strdup(path_packfile);
584 7e656b93 2018-03-17 stsp if (pack->path_packfile == NULL) {
585 0a585a0d 2018-03-17 stsp err = got_error_from_errno();
589 8b2180d4 2018-04-26 stsp err = open_packfile(&pack->fd, path_packfile, repo, packidx);
593 7e656b93 2018-03-17 stsp err = get_packfile_size(&pack->filesize, path_packfile);
597 7e656b93 2018-03-17 stsp free(pack->path_packfile);
598 7e656b93 2018-03-17 stsp free(pack);
599 7e656b93 2018-03-17 stsp } else if (packp)
600 7e656b93 2018-03-17 stsp *packp = pack;
601 c7fe698a 2018-01-23 stsp return err;
604 7e656b93 2018-03-17 stsp struct got_pack *
605 7e656b93 2018-03-17 stsp get_cached_pack(const char *path_packfile, struct got_repository *repo)
607 7e656b93 2018-03-17 stsp struct got_pack *pack = NULL;
610 7e656b93 2018-03-17 stsp for (i = 0; i < nitems(repo->packs); i++) {
611 7e656b93 2018-03-17 stsp pack = &repo->packs[i];
612 7e656b93 2018-03-17 stsp if (pack->path_packfile == NULL)
614 7e656b93 2018-03-17 stsp if (strcmp(pack->path_packfile, path_packfile) == 0)
615 7e656b93 2018-03-17 stsp return pack;
618 7e656b93 2018-03-17 stsp return NULL;
621 c7fe698a 2018-01-23 stsp static const struct got_error *
622 8b2180d4 2018-04-26 stsp parse_object_type_and_size(uint8_t *type, uint64_t *size, size_t *len, int fd)
624 a487c1d0 2018-01-14 stsp uint8_t t = 0;
625 a487c1d0 2018-01-14 stsp uint64_t s = 0;
626 a487c1d0 2018-01-14 stsp uint8_t sizeN;
631 a1fd68d8 2018-01-12 stsp /* We do not support size values which don't fit in 64 bit. */
633 a487c1d0 2018-01-14 stsp return got_error(GOT_ERR_NO_SPACE);
635 8b2180d4 2018-04-26 stsp n = read(fd, &sizeN, sizeof(sizeN));
637 8b2180d4 2018-04-26 stsp return got_error_from_errno();
638 8b2180d4 2018-04-26 stsp if (n != sizeof(sizeN))
639 8b2180d4 2018-04-26 stsp return got_error(GOT_ERR_BAD_PACKFILE);
641 a1fd68d8 2018-01-12 stsp if (i == 0) {
642 a487c1d0 2018-01-14 stsp t = (sizeN & GOT_PACK_OBJ_SIZE0_TYPE_MASK) >>
643 a1fd68d8 2018-01-12 stsp GOT_PACK_OBJ_SIZE0_TYPE_MASK_SHIFT;
644 a487c1d0 2018-01-14 stsp s = (sizeN & GOT_PACK_OBJ_SIZE0_VAL_MASK);
646 a1fd68d8 2018-01-12 stsp size_t shift = 4 + 7 * (i - 1);
647 a487c1d0 2018-01-14 stsp s |= ((sizeN & GOT_PACK_OBJ_SIZE_VAL_MASK) << shift);
650 a1fd68d8 2018-01-12 stsp } while (sizeN & GOT_PACK_OBJ_SIZE_MORE);
654 3ee5fc21 2018-01-17 stsp *len = i * sizeof(sizeN);
655 a487c1d0 2018-01-14 stsp return NULL;
658 a1fd68d8 2018-01-12 stsp static const struct got_error *
659 9710aac2 2018-01-19 stsp open_plain_object(struct got_object **obj, const char *path_packfile,
660 6ccb713b 2018-01-19 stsp struct got_object_id *id, uint8_t type, off_t offset, size_t size)
662 6ccb713b 2018-01-19 stsp *obj = calloc(1, sizeof(**obj));
663 6ccb713b 2018-01-19 stsp if (*obj == NULL)
664 0a585a0d 2018-03-17 stsp return got_error_from_errno();
666 6ccb713b 2018-01-19 stsp (*obj)->path_packfile = strdup(path_packfile);
667 6ccb713b 2018-01-19 stsp if ((*obj)->path_packfile == NULL) {
668 0a585a0d 2018-03-17 stsp const struct got_error *err = got_error_from_errno();
669 6ccb713b 2018-01-19 stsp free(*obj);
670 6ccb713b 2018-01-19 stsp *obj = NULL;
671 0a585a0d 2018-03-17 stsp return err;
674 6ccb713b 2018-01-19 stsp (*obj)->type = type;
675 6ccb713b 2018-01-19 stsp (*obj)->flags = GOT_OBJ_FLAG_PACKED;
676 6ccb713b 2018-01-19 stsp (*obj)->hdrlen = 0;
677 6ccb713b 2018-01-19 stsp (*obj)->size = size;
678 6ccb713b 2018-01-19 stsp memcpy(&(*obj)->id, id, sizeof((*obj)->id));
679 6ccb713b 2018-01-19 stsp (*obj)->pack_offset = offset;
681 b107e67f 2018-01-19 stsp return NULL;
684 b107e67f 2018-01-19 stsp static const struct got_error *
685 8b2180d4 2018-04-26 stsp parse_negative_offset(int64_t *offset, size_t *len, int fd)
687 b107e67f 2018-01-19 stsp int64_t o = 0;
688 b107e67f 2018-01-19 stsp uint8_t offN;
693 b107e67f 2018-01-19 stsp /* We do not support offset values which don't fit in 64 bit. */
695 b107e67f 2018-01-19 stsp return got_error(GOT_ERR_NO_SPACE);
697 8b2180d4 2018-04-26 stsp n = read(fd, &offN, sizeof(offN));
699 8b2180d4 2018-04-26 stsp return got_error_from_errno();
700 8b2180d4 2018-04-26 stsp if (n != sizeof(offN))
701 8b2180d4 2018-04-26 stsp return got_error(GOT_ERR_BAD_PACKFILE);
703 b107e67f 2018-01-19 stsp if (i == 0)
704 b107e67f 2018-01-19 stsp o = (offN & GOT_PACK_OBJ_DELTA_OFF_VAL_MASK);
708 cecc778e 2018-01-23 stsp o += (offN & GOT_PACK_OBJ_DELTA_OFF_VAL_MASK);
711 b107e67f 2018-01-19 stsp } while (offN & GOT_PACK_OBJ_DELTA_OFF_MORE);
713 b107e67f 2018-01-19 stsp *offset = o;
714 b107e67f 2018-01-19 stsp *len = i * sizeof(offN);
715 6ccb713b 2018-01-19 stsp return NULL;
718 6ccb713b 2018-01-19 stsp static const struct got_error *
719 8b2180d4 2018-04-26 stsp parse_offset_delta(off_t *base_offset, int fd, off_t offset)
721 96f5e8b3 2018-01-23 stsp const struct got_error *err;
722 b107e67f 2018-01-19 stsp int64_t negoffset;
723 b107e67f 2018-01-19 stsp size_t negofflen;
725 8b2180d4 2018-04-26 stsp err = parse_negative_offset(&negoffset, &negofflen, fd);
727 b107e67f 2018-01-19 stsp return err;
729 b107e67f 2018-01-19 stsp /* Compute the base object's offset (must be in the same pack file). */
730 96f5e8b3 2018-01-23 stsp *base_offset = (offset - negoffset);
731 96f5e8b3 2018-01-23 stsp if (*base_offset <= 0)
732 b107e67f 2018-01-19 stsp return got_error(GOT_ERR_BAD_PACKFILE);
734 96f5e8b3 2018-01-23 stsp return NULL;
737 0e22967e 2018-02-11 stsp static const struct got_error *
738 0e22967e 2018-02-11 stsp resolve_delta_chain(struct got_delta_chain *, struct got_repository *,
739 0c048b15 2018-04-27 stsp int, size_t, const char *, off_t, size_t, int, size_t, unsigned int);
741 96f5e8b3 2018-01-23 stsp static const struct got_error *
742 bdd2fbb3 2018-02-11 stsp add_delta(struct got_delta_chain *deltas, const char *path_packfile,
743 bdd2fbb3 2018-02-11 stsp off_t delta_offset, size_t tslen, int delta_type, size_t delta_size,
744 a53d2f13 2018-03-17 stsp size_t delta_data_offset, uint8_t *delta_buf, size_t delta_len)
746 bdd2fbb3 2018-02-11 stsp struct got_delta *delta;
748 bdd2fbb3 2018-02-11 stsp delta = got_delta_open(path_packfile, delta_offset, tslen,
749 a53d2f13 2018-03-17 stsp delta_type, delta_size, delta_data_offset, delta_buf,
750 a53d2f13 2018-03-17 stsp delta_len);
751 bdd2fbb3 2018-02-11 stsp if (delta == NULL)
752 0a585a0d 2018-03-17 stsp return got_error_from_errno();
753 bdd2fbb3 2018-02-11 stsp /* delta is freed in got_object_close() */
754 bdd2fbb3 2018-02-11 stsp deltas->nentries++;
755 bdd2fbb3 2018-02-11 stsp SIMPLEQ_INSERT_HEAD(&deltas->entries, delta, entry);
756 bdd2fbb3 2018-02-11 stsp return NULL;
759 bdd2fbb3 2018-02-11 stsp static const struct got_error *
760 6b9c9673 2018-01-23 stsp resolve_offset_delta(struct got_delta_chain *deltas,
761 0c048b15 2018-04-27 stsp struct got_repository *repo, int fd, size_t packfile_size,
762 0c048b15 2018-04-27 stsp const char *path_packfile, off_t delta_offset, size_t tslen,
763 0c048b15 2018-04-27 stsp int delta_type, size_t delta_size, unsigned int recursion)
766 a3500804 2018-01-23 stsp const struct got_error *err;
767 c3703302 2018-01-23 stsp off_t base_offset;
768 c3703302 2018-01-23 stsp uint8_t base_type;
769 c3703302 2018-01-23 stsp uint64_t base_size;
770 c3703302 2018-01-23 stsp size_t base_tslen;
771 bdd2fbb3 2018-02-11 stsp off_t delta_data_offset;
772 a53d2f13 2018-03-17 stsp uint8_t *delta_buf;
773 a53d2f13 2018-03-17 stsp size_t delta_len;
775 8b2180d4 2018-04-26 stsp err = parse_offset_delta(&base_offset, fd, delta_offset);
777 a3500804 2018-01-23 stsp return err;
779 8b2180d4 2018-04-26 stsp delta_data_offset = lseek(fd, 0, SEEK_CUR);
780 bdd2fbb3 2018-02-11 stsp if (delta_data_offset == -1)
781 bdd2fbb3 2018-02-11 stsp return got_error_from_errno();
783 8b2180d4 2018-04-26 stsp err = got_inflate_to_mem_fd(&delta_buf, &delta_len, fd);
785 a53d2f13 2018-03-17 stsp return err;
787 bdd2fbb3 2018-02-11 stsp err = add_delta(deltas, path_packfile, delta_offset, tslen,
788 a53d2f13 2018-03-17 stsp delta_type, delta_size, delta_data_offset, delta_buf, delta_len);
790 bdd2fbb3 2018-02-11 stsp return err;
792 c3703302 2018-01-23 stsp /* An offset delta must be in the same packfile. */
793 0c048b15 2018-04-27 stsp if (base_offset >= packfile_size)
794 0c048b15 2018-04-27 stsp return got_error(GOT_ERR_PACK_OFFSET);
795 8b2180d4 2018-04-26 stsp if (lseek(fd, base_offset, SEEK_SET) == -1)
796 b107e67f 2018-01-19 stsp return got_error_from_errno();
798 348f621c 2018-01-23 stsp err = parse_object_type_and_size(&base_type, &base_size, &base_tslen,
801 b107e67f 2018-01-19 stsp return err;
803 0c048b15 2018-04-27 stsp return resolve_delta_chain(deltas, repo, fd, packfile_size,
804 0c048b15 2018-04-27 stsp path_packfile, base_offset, base_tslen, base_type, base_size,
805 0c048b15 2018-04-27 stsp recursion - 1);
808 c3703302 2018-01-23 stsp static const struct got_error *
809 6b9c9673 2018-01-23 stsp resolve_ref_delta(struct got_delta_chain *deltas, struct got_repository *repo,
810 8b2180d4 2018-04-26 stsp int fd, const char *path_packfile, off_t delta_offset,
811 5b7e13a7 2018-04-02 stsp size_t tslen, int delta_type, size_t delta_size, unsigned int recursion)
813 6b9c9673 2018-01-23 stsp const struct got_error *err;
814 6b9c9673 2018-01-23 stsp struct got_object_id id;
815 6b9c9673 2018-01-23 stsp struct got_packidx_v2_hdr *packidx;
817 6b9c9673 2018-01-23 stsp off_t base_offset;
818 6b9c9673 2018-01-23 stsp uint8_t base_type;
819 6b9c9673 2018-01-23 stsp uint64_t base_size;
820 6b9c9673 2018-01-23 stsp size_t base_tslen;
822 65cf1e80 2018-03-16 stsp char *path_base_packfile;
823 999f19f6 2018-03-17 stsp struct got_pack *base_pack;
824 bdd2fbb3 2018-02-11 stsp off_t delta_data_offset;
825 a53d2f13 2018-03-17 stsp uint8_t *delta_buf;
826 a53d2f13 2018-03-17 stsp size_t delta_len;
828 8b2180d4 2018-04-26 stsp n = read(fd, &id, sizeof(id));
830 8b2180d4 2018-04-26 stsp return got_error_from_errno();
831 8b2180d4 2018-04-26 stsp if (n != sizeof(id))
832 8b2180d4 2018-04-26 stsp return got_error(GOT_ERR_BAD_PACKFILE);
834 8b2180d4 2018-04-26 stsp delta_data_offset = lseek(fd, 0, SEEK_CUR);
835 bdd2fbb3 2018-02-11 stsp if (delta_data_offset == -1)
836 bdd2fbb3 2018-02-11 stsp return got_error_from_errno();
838 8b2180d4 2018-04-26 stsp err = got_inflate_to_mem_fd(&delta_buf, &delta_len, fd);
840 a53d2f13 2018-03-17 stsp return err;
842 bdd2fbb3 2018-02-11 stsp err = add_delta(deltas, path_packfile, delta_offset, tslen,
843 a53d2f13 2018-03-17 stsp delta_type, delta_size, delta_data_offset, delta_buf, delta_len);
845 bdd2fbb3 2018-02-11 stsp return err;
847 6b9c9673 2018-01-23 stsp err = search_packidx(&packidx, &idx, repo, &id);
849 6b9c9673 2018-01-23 stsp return err;
851 6b9c9673 2018-01-23 stsp base_offset = get_object_offset(packidx, idx);
852 6b9c9673 2018-01-23 stsp if (base_offset == (uint64_t)-1) {
853 6b9c9673 2018-01-23 stsp return got_error(GOT_ERR_BAD_PACKIDX);
856 7e656b93 2018-03-17 stsp err = get_packfile_path(&path_base_packfile, repo, packidx);
858 7e656b93 2018-03-17 stsp return err;
860 999f19f6 2018-03-17 stsp base_pack = get_cached_pack(path_base_packfile, repo);
861 999f19f6 2018-03-17 stsp if (base_pack == NULL) {
862 999f19f6 2018-03-17 stsp err = cache_pack(&base_pack, path_base_packfile, NULL, repo);
867 0c048b15 2018-04-27 stsp if (base_offset >= base_pack->filesize) {
868 0c048b15 2018-04-27 stsp err = got_error(GOT_ERR_PACK_OFFSET);
871 8b2180d4 2018-04-26 stsp if (lseek(base_pack->fd, base_offset, SEEK_SET) == -1) {
872 6b9c9673 2018-01-23 stsp err = got_error_from_errno();
876 6b9c9673 2018-01-23 stsp err = parse_object_type_and_size(&base_type, &base_size, &base_tslen,
877 8b2180d4 2018-04-26 stsp base_pack->fd);
881 8b2180d4 2018-04-26 stsp err = resolve_delta_chain(deltas, repo, base_pack->fd,
882 0c048b15 2018-04-27 stsp base_pack->filesize, path_base_packfile, base_offset,
883 0c048b15 2018-04-27 stsp base_tslen, base_type, base_size, recursion - 1);
885 65cf1e80 2018-03-16 stsp free(path_base_packfile);
886 6b9c9673 2018-01-23 stsp return err;
889 6b9c9673 2018-01-23 stsp static const struct got_error *
890 6b9c9673 2018-01-23 stsp resolve_delta_chain(struct got_delta_chain *deltas, struct got_repository *repo,
891 0c048b15 2018-04-27 stsp int fd, size_t packfile_size, const char *path_packfile, off_t delta_offset,
892 0c048b15 2018-04-27 stsp size_t tslen, int delta_type, size_t delta_size, unsigned int recursion)
894 c3703302 2018-01-23 stsp const struct got_error *err = NULL;
896 5b7e13a7 2018-04-02 stsp if (--recursion == 0)
897 5b7e13a7 2018-04-02 stsp return got_error(GOT_ERR_RECURSION);
899 c3703302 2018-01-23 stsp switch (delta_type) {
900 4e8cda55 2018-01-19 stsp case GOT_OBJ_TYPE_COMMIT:
901 4e8cda55 2018-01-19 stsp case GOT_OBJ_TYPE_TREE:
902 4e8cda55 2018-01-19 stsp case GOT_OBJ_TYPE_BLOB:
903 4e8cda55 2018-01-19 stsp case GOT_OBJ_TYPE_TAG:
904 c3703302 2018-01-23 stsp /* Plain types are the final delta base. Recursion ends. */
905 bdd2fbb3 2018-02-11 stsp err = add_delta(deltas, path_packfile, delta_offset, tslen,
906 a53d2f13 2018-03-17 stsp delta_type, delta_size, 0, NULL, 0);
908 a3500804 2018-01-23 stsp case GOT_OBJ_TYPE_OFFSET_DELTA:
909 0c048b15 2018-04-27 stsp err = resolve_offset_delta(deltas, repo, fd, packfile_size,
910 0c048b15 2018-04-27 stsp path_packfile, delta_offset, tslen, delta_type, delta_size,
911 0c048b15 2018-04-27 stsp recursion - 1);
913 4e8cda55 2018-01-19 stsp case GOT_OBJ_TYPE_REF_DELTA:
914 8b2180d4 2018-04-26 stsp err = resolve_ref_delta(deltas, repo, fd, path_packfile,
915 8b2180d4 2018-04-26 stsp delta_offset, tslen, delta_type, delta_size, recursion - 1);
918 4810de4a 2018-04-01 stsp return got_error(GOT_ERR_OBJ_TYPE);
921 96f5e8b3 2018-01-23 stsp return err;
924 96f5e8b3 2018-01-23 stsp static const struct got_error *
925 a48db7e5 2018-01-23 stsp open_delta_object(struct got_object **obj, struct got_repository *repo,
926 a48db7e5 2018-01-23 stsp struct got_packidx_v2_hdr *packidx, const char *path_packfile,
927 0c048b15 2018-04-27 stsp int fd, size_t packfile_size, struct got_object_id *id, off_t offset,
928 0c048b15 2018-04-27 stsp size_t tslen, int delta_type, size_t delta_size)
930 96f5e8b3 2018-01-23 stsp const struct got_error *err = NULL;
931 96f5e8b3 2018-01-23 stsp int resolved_type;
933 b107e67f 2018-01-19 stsp *obj = calloc(1, sizeof(**obj));
934 b107e67f 2018-01-19 stsp if (*obj == NULL)
935 0a585a0d 2018-03-17 stsp return got_error_from_errno();
937 96f5e8b3 2018-01-23 stsp (*obj)->flags = 0;
938 b107e67f 2018-01-19 stsp (*obj)->hdrlen = 0;
939 39e73dc9 2018-03-03 stsp (*obj)->size = 0; /* Not known because deltas aren't applied yet. */
940 b107e67f 2018-01-19 stsp memcpy(&(*obj)->id, id, sizeof((*obj)->id));
941 cecc778e 2018-01-23 stsp (*obj)->pack_offset = offset + tslen;
943 96f5e8b3 2018-01-23 stsp (*obj)->path_packfile = strdup(path_packfile);
944 96f5e8b3 2018-01-23 stsp if ((*obj)->path_packfile == NULL) {
945 0a585a0d 2018-03-17 stsp err = got_error_from_errno();
948 96f5e8b3 2018-01-23 stsp (*obj)->flags |= GOT_OBJ_FLAG_PACKED;
950 96f5e8b3 2018-01-23 stsp SIMPLEQ_INIT(&(*obj)->deltas.entries);
951 96f5e8b3 2018-01-23 stsp (*obj)->flags |= GOT_OBJ_FLAG_DELTIFIED;
953 0c048b15 2018-04-27 stsp err = resolve_delta_chain(&(*obj)->deltas, repo, fd, packfile_size,
954 5b7e13a7 2018-04-02 stsp path_packfile, offset, tslen, delta_type, delta_size,
955 5b7e13a7 2018-04-02 stsp GOT_DELTA_CHAIN_RECURSION_MAX);
959 96f5e8b3 2018-01-23 stsp err = got_delta_chain_get_base_type(&resolved_type, &(*obj)->deltas);
962 96f5e8b3 2018-01-23 stsp (*obj)->type = resolved_type;
966 96f5e8b3 2018-01-23 stsp got_object_close(*obj);
967 96f5e8b3 2018-01-23 stsp *obj = NULL;
969 96f5e8b3 2018-01-23 stsp return err;
972 b107e67f 2018-01-19 stsp static const struct got_error *
973 6c00b545 2018-01-17 stsp open_packed_object(struct got_object **obj, struct got_repository *repo,
974 6b9c9673 2018-01-23 stsp struct got_packidx_v2_hdr *packidx, int idx, struct got_object_id *id)
976 a1fd68d8 2018-01-12 stsp const struct got_error *err = NULL;
977 a1fd68d8 2018-01-12 stsp off_t offset;
978 65cf1e80 2018-03-16 stsp char *path_packfile;
979 6d89869a 2018-03-17 stsp struct got_pack *pack;
980 6c00b545 2018-01-17 stsp uint8_t type;
981 6c00b545 2018-01-17 stsp uint64_t size;
982 3ee5fc21 2018-01-17 stsp size_t tslen;
984 6c00b545 2018-01-17 stsp *obj = NULL;
986 a1fd68d8 2018-01-12 stsp offset = get_object_offset(packidx, idx);
987 a1fd68d8 2018-01-12 stsp if (offset == (uint64_t)-1)
988 a1fd68d8 2018-01-12 stsp return got_error(GOT_ERR_BAD_PACKIDX);
990 7e656b93 2018-03-17 stsp err = get_packfile_path(&path_packfile, repo, packidx);
992 6b9c9673 2018-01-23 stsp return err;
994 6d89869a 2018-03-17 stsp pack = get_cached_pack(path_packfile, repo);
995 6d89869a 2018-03-17 stsp if (pack == NULL) {
996 6d89869a 2018-03-17 stsp err = cache_pack(&pack, path_packfile, packidx, repo);
1001 0c048b15 2018-04-27 stsp if (offset >= pack->filesize) {
1002 0c048b15 2018-04-27 stsp err = got_error(GOT_ERR_PACK_OFFSET);
1003 0c048b15 2018-04-27 stsp goto done;
1005 8b2180d4 2018-04-26 stsp if (lseek(pack->fd, offset, SEEK_SET) == -1) {
1006 6c00b545 2018-01-17 stsp err = got_error_from_errno();
1007 6c00b545 2018-01-17 stsp goto done;
1010 8b2180d4 2018-04-26 stsp err = parse_object_type_and_size(&type, &size, &tslen, pack->fd);
1012 a1fd68d8 2018-01-12 stsp goto done;
1014 6c00b545 2018-01-17 stsp switch (type) {
1015 6c00b545 2018-01-17 stsp case GOT_OBJ_TYPE_COMMIT:
1016 6c00b545 2018-01-17 stsp case GOT_OBJ_TYPE_TREE:
1017 6c00b545 2018-01-17 stsp case GOT_OBJ_TYPE_BLOB:
1018 d33fc9ef 2018-01-23 stsp case GOT_OBJ_TYPE_TAG:
1019 9710aac2 2018-01-19 stsp err = open_plain_object(obj, path_packfile, id, type,
1020 6ccb713b 2018-01-19 stsp offset + tslen, size);
1023 b107e67f 2018-01-19 stsp case GOT_OBJ_TYPE_OFFSET_DELTA:
1024 a48db7e5 2018-01-23 stsp case GOT_OBJ_TYPE_REF_DELTA:
1025 a48db7e5 2018-01-23 stsp err = open_delta_object(obj, repo, packidx, path_packfile,
1026 0c048b15 2018-04-27 stsp pack->fd, pack->filesize, id, offset, tslen, type, size);
1030 4810de4a 2018-04-01 stsp err = got_error(GOT_ERR_OBJ_TYPE);
1031 6c00b545 2018-01-17 stsp goto done;
1034 65cf1e80 2018-03-16 stsp free(path_packfile);
1035 a1fd68d8 2018-01-12 stsp return err;
1038 a1fd68d8 2018-01-12 stsp const struct got_error *
1039 6c00b545 2018-01-17 stsp got_packfile_open_object(struct got_object **obj, struct got_object_id *id,
1040 a1fd68d8 2018-01-12 stsp struct got_repository *repo)
1042 a1fd68d8 2018-01-12 stsp const struct got_error *err = NULL;
1043 6b9c9673 2018-01-23 stsp struct got_packidx_v2_hdr *packidx = NULL;
1046 6b9c9673 2018-01-23 stsp err = search_packidx(&packidx, &idx, repo, id);
1048 6b9c9673 2018-01-23 stsp return err;
1050 6b9c9673 2018-01-23 stsp err = open_packed_object(obj, repo, packidx, idx, id);
1052 7e656b93 2018-03-17 stsp return err;
1054 7e656b93 2018-03-17 stsp err = cache_pack(NULL, (*obj)->path_packfile, packidx, repo);
1055 3ee5fc21 2018-01-17 stsp return err;
1058 efd2a263 2018-01-19 stsp static const struct got_error *
1059 40426839 2018-03-17 stsp get_delta_chain_max_size(uint64_t *max_size, struct got_delta_chain *deltas)
1061 22484865 2018-03-13 stsp struct got_delta *delta;
1062 22484865 2018-03-13 stsp uint64_t base_size = 0, result_size = 0;
1064 22484865 2018-03-13 stsp *max_size = 0;
1065 22484865 2018-03-13 stsp SIMPLEQ_FOREACH(delta, &deltas->entries, entry) {
1066 22484865 2018-03-13 stsp /* Plain object types are the delta base. */
1067 22484865 2018-03-13 stsp if (delta->type != GOT_OBJ_TYPE_COMMIT &&
1068 22484865 2018-03-13 stsp delta->type != GOT_OBJ_TYPE_TREE &&
1069 22484865 2018-03-13 stsp delta->type != GOT_OBJ_TYPE_BLOB &&
1070 22484865 2018-03-13 stsp delta->type != GOT_OBJ_TYPE_TAG) {
1071 22484865 2018-03-13 stsp const struct got_error *err;
1072 a53d2f13 2018-03-17 stsp err = got_delta_get_sizes(&base_size, &result_size,
1073 a53d2f13 2018-03-17 stsp delta->delta_buf, delta->delta_len);
1075 22484865 2018-03-13 stsp return err;
1077 22484865 2018-03-13 stsp base_size = delta->size;
1078 22484865 2018-03-13 stsp if (base_size > *max_size)
1079 22484865 2018-03-13 stsp *max_size = base_size;
1080 22484865 2018-03-13 stsp if (result_size > *max_size)
1081 22484865 2018-03-13 stsp *max_size = result_size;
1084 9feb4ff2 2018-03-14 stsp return NULL;
1087 22484865 2018-03-13 stsp static const struct got_error *
1088 b29656e2 2018-03-16 stsp dump_delta_chain_to_file(size_t *result_size, struct got_delta_chain *deltas,
1089 72eb3431 2018-04-01 stsp FILE *outfile, struct got_repository *repo)
1091 efd2a263 2018-01-19 stsp const struct got_error *err = NULL;
1092 6691714a 2018-01-23 stsp struct got_delta *delta;
1093 22484865 2018-03-13 stsp FILE *base_file = NULL, *accum_file = NULL;
1094 8628c62d 2018-03-15 stsp uint8_t *base_buf = NULL, *accum_buf = NULL;
1095 b29656e2 2018-03-16 stsp size_t accum_size = 0;
1096 22484865 2018-03-13 stsp uint64_t max_size;
1097 6691714a 2018-01-23 stsp int n = 0;
1099 b29656e2 2018-03-16 stsp *result_size = 0;
1101 710bb5ca 2018-01-23 stsp if (SIMPLEQ_EMPTY(&deltas->entries))
1102 6691714a 2018-01-23 stsp return got_error(GOT_ERR_BAD_DELTA_CHAIN);
1104 8628c62d 2018-03-15 stsp /* We process small enough files entirely in memory for speed. */
1105 40426839 2018-03-17 stsp err = get_delta_chain_max_size(&max_size, deltas);
1107 22484865 2018-03-13 stsp return err;
1108 8628c62d 2018-03-15 stsp if (max_size < GOT_DELTA_RESULT_SIZE_CACHED_MAX) {
1109 8628c62d 2018-03-15 stsp accum_buf = malloc(max_size);
1110 8628c62d 2018-03-15 stsp if (accum_buf == NULL)
1111 0a585a0d 2018-03-17 stsp return got_error_from_errno();
1113 22484865 2018-03-13 stsp base_file = got_opentemp();
1114 8628c62d 2018-03-15 stsp if (base_file == NULL)
1115 8628c62d 2018-03-15 stsp return got_error_from_errno();
1117 22484865 2018-03-13 stsp accum_file = got_opentemp();
1118 8628c62d 2018-03-15 stsp if (accum_file == NULL) {
1119 8628c62d 2018-03-15 stsp err = got_error_from_errno();
1120 8628c62d 2018-03-15 stsp fclose(base_file);
1121 8628c62d 2018-03-15 stsp return err;
1125 6691714a 2018-01-23 stsp /* Deltas are ordered in ascending order. */
1126 710bb5ca 2018-01-23 stsp SIMPLEQ_FOREACH(delta, &deltas->entries, entry) {
1127 a6b158cc 2018-02-11 stsp if (n == 0) {
1128 72eb3431 2018-04-01 stsp struct got_pack *pack;
1129 8628c62d 2018-03-15 stsp size_t base_len;
1130 0c048b15 2018-04-27 stsp off_t delta_data_offset;
1132 a6b158cc 2018-02-11 stsp /* Plain object types are the delta base. */
1133 a6b158cc 2018-02-11 stsp if (delta->type != GOT_OBJ_TYPE_COMMIT &&
1134 a6b158cc 2018-02-11 stsp delta->type != GOT_OBJ_TYPE_TREE &&
1135 a6b158cc 2018-02-11 stsp delta->type != GOT_OBJ_TYPE_BLOB &&
1136 a6b158cc 2018-02-11 stsp delta->type != GOT_OBJ_TYPE_TAG) {
1137 72eb3431 2018-04-01 stsp err = got_error(GOT_ERR_BAD_DELTA_CHAIN);
1138 72eb3431 2018-04-01 stsp goto done;
1141 72eb3431 2018-04-01 stsp pack = get_cached_pack(delta->path_packfile, repo);
1142 72eb3431 2018-04-01 stsp if (pack == NULL) {
1143 a6b158cc 2018-02-11 stsp err = got_error(GOT_ERR_BAD_DELTA_CHAIN);
1144 a6b158cc 2018-02-11 stsp goto done;
1147 0c048b15 2018-04-27 stsp delta_data_offset = delta->offset + delta->tslen;
1148 0c048b15 2018-04-27 stsp if (delta_data_offset >= pack->filesize) {
1149 0c048b15 2018-04-27 stsp err = got_error(GOT_ERR_PACK_OFFSET);
1150 0c048b15 2018-04-27 stsp goto done;
1152 0c048b15 2018-04-27 stsp if (lseek(pack->fd, delta_data_offset, SEEK_SET) == -1) {
1153 bdd2fbb3 2018-02-11 stsp err = got_error_from_errno();
1154 bdd2fbb3 2018-02-11 stsp goto done;
1156 8628c62d 2018-03-15 stsp if (base_file)
1157 8b2180d4 2018-04-26 stsp err = got_inflate_to_file_fd(&base_len,
1158 8b2180d4 2018-04-26 stsp pack->fd, base_file);
1160 8b2180d4 2018-04-26 stsp err = got_inflate_to_mem_fd(&base_buf, &base_len,
1161 8b2180d4 2018-04-26 stsp pack->fd);
1162 8628c62d 2018-03-15 stsp if (base_len < max_size) {
1163 8628c62d 2018-03-15 stsp uint8_t *p;
1164 8628c62d 2018-03-15 stsp p = reallocarray(base_buf, 1, max_size);
1165 8628c62d 2018-03-15 stsp if (p == NULL) {
1166 0a585a0d 2018-03-17 stsp err = got_error_from_errno();
1167 8628c62d 2018-03-15 stsp goto done;
1169 8628c62d 2018-03-15 stsp base_buf = p;
1173 a6b158cc 2018-02-11 stsp goto done;
1175 8628c62d 2018-03-15 stsp if (base_file)
1176 8628c62d 2018-03-15 stsp rewind(base_file);
1180 8628c62d 2018-03-15 stsp if (base_buf) {
1181 a53d2f13 2018-03-17 stsp err = got_delta_apply_in_mem(base_buf, delta->delta_buf,
1182 a53d2f13 2018-03-17 stsp delta->delta_len, accum_buf, &accum_size);
1185 a53d2f13 2018-03-17 stsp err = got_delta_apply(base_file, delta->delta_buf,
1186 a53d2f13 2018-03-17 stsp delta->delta_len,
1187 8628c62d 2018-03-15 stsp /* Final delta application writes to output file. */
1188 b29656e2 2018-03-16 stsp ++n < deltas->nentries ? accum_file : outfile,
1189 b29656e2 2018-03-16 stsp &accum_size);
1192 6691714a 2018-01-23 stsp goto done;
1194 710bb5ca 2018-01-23 stsp if (n < deltas->nentries) {
1195 6691714a 2018-01-23 stsp /* Accumulated delta becomes the new base. */
1196 8628c62d 2018-03-15 stsp if (base_buf) {
1197 8628c62d 2018-03-15 stsp uint8_t *tmp = accum_buf;
1198 8628c62d 2018-03-15 stsp accum_buf = base_buf;
1199 8628c62d 2018-03-15 stsp base_buf = tmp;
1201 8628c62d 2018-03-15 stsp FILE *tmp = accum_file;
1202 8628c62d 2018-03-15 stsp accum_file = base_file;
1203 8628c62d 2018-03-15 stsp base_file = tmp;
1204 8628c62d 2018-03-15 stsp rewind(base_file);
1205 8628c62d 2018-03-15 stsp rewind(accum_file);
1211 8628c62d 2018-03-15 stsp free(base_buf);
1212 8628c62d 2018-03-15 stsp if (accum_buf) {
1213 8628c62d 2018-03-15 stsp size_t len = fwrite(accum_buf, 1, accum_size, outfile);
1214 8628c62d 2018-03-15 stsp free(accum_buf);
1215 8628c62d 2018-03-15 stsp if (len != accum_size)
1216 8628c62d 2018-03-15 stsp return got_ferror(outfile, GOT_ERR_IO);
1218 8628c62d 2018-03-15 stsp if (base_file)
1219 8628c62d 2018-03-15 stsp fclose(base_file);
1220 8628c62d 2018-03-15 stsp if (accum_file)
1221 8628c62d 2018-03-15 stsp fclose(accum_file);
1222 6691714a 2018-01-23 stsp rewind(outfile);
1223 b29656e2 2018-03-16 stsp if (err == NULL)
1224 b29656e2 2018-03-16 stsp *result_size = accum_size;
1225 e0ab43e7 2018-03-16 stsp return err;
1228 e0ab43e7 2018-03-16 stsp static const struct got_error *
1229 e0ab43e7 2018-03-16 stsp dump_delta_chain_to_mem(uint8_t **outbuf, size_t *outlen,
1230 72eb3431 2018-04-01 stsp struct got_delta_chain *deltas, struct got_repository *repo)
1232 e0ab43e7 2018-03-16 stsp const struct got_error *err = NULL;
1233 e0ab43e7 2018-03-16 stsp struct got_delta *delta;
1234 e0ab43e7 2018-03-16 stsp uint8_t *base_buf = NULL, *accum_buf = NULL;
1235 e0ab43e7 2018-03-16 stsp size_t accum_size;
1236 e0ab43e7 2018-03-16 stsp uint64_t max_size;
1237 e0ab43e7 2018-03-16 stsp int n = 0;
1239 e0ab43e7 2018-03-16 stsp *outbuf = NULL;
1240 e0ab43e7 2018-03-16 stsp *outlen = 0;
1242 e0ab43e7 2018-03-16 stsp if (SIMPLEQ_EMPTY(&deltas->entries))
1243 e0ab43e7 2018-03-16 stsp return got_error(GOT_ERR_BAD_DELTA_CHAIN);
1245 40426839 2018-03-17 stsp err = get_delta_chain_max_size(&max_size, deltas);
1247 e0ab43e7 2018-03-16 stsp return err;
1248 e0ab43e7 2018-03-16 stsp accum_buf = malloc(max_size);
1249 e0ab43e7 2018-03-16 stsp if (accum_buf == NULL)
1250 0a585a0d 2018-03-17 stsp return got_error_from_errno();
1252 e0ab43e7 2018-03-16 stsp /* Deltas are ordered in ascending order. */
1253 e0ab43e7 2018-03-16 stsp SIMPLEQ_FOREACH(delta, &deltas->entries, entry) {
1254 e0ab43e7 2018-03-16 stsp if (n == 0) {
1255 72eb3431 2018-04-01 stsp struct got_pack *pack;
1256 e0ab43e7 2018-03-16 stsp size_t base_len;
1257 0c048b15 2018-04-27 stsp size_t delta_data_offset;
1259 e0ab43e7 2018-03-16 stsp /* Plain object types are the delta base. */
1260 e0ab43e7 2018-03-16 stsp if (delta->type != GOT_OBJ_TYPE_COMMIT &&
1261 e0ab43e7 2018-03-16 stsp delta->type != GOT_OBJ_TYPE_TREE &&
1262 e0ab43e7 2018-03-16 stsp delta->type != GOT_OBJ_TYPE_BLOB &&
1263 e0ab43e7 2018-03-16 stsp delta->type != GOT_OBJ_TYPE_TAG) {
1264 72eb3431 2018-04-01 stsp err = got_error(GOT_ERR_BAD_DELTA_CHAIN);
1265 72eb3431 2018-04-01 stsp goto done;
1268 72eb3431 2018-04-01 stsp pack = get_cached_pack(delta->path_packfile, repo);
1269 72eb3431 2018-04-01 stsp if (pack == NULL) {
1270 e0ab43e7 2018-03-16 stsp err = got_error(GOT_ERR_BAD_DELTA_CHAIN);
1271 e0ab43e7 2018-03-16 stsp goto done;
1274 0c048b15 2018-04-27 stsp delta_data_offset = delta->offset + delta->tslen;
1275 0c048b15 2018-04-27 stsp if (delta_data_offset >= pack->filesize) {
1276 0c048b15 2018-04-27 stsp err = got_error(GOT_ERR_PACK_OFFSET);
1277 0c048b15 2018-04-27 stsp goto done;
1279 0c048b15 2018-04-27 stsp if (lseek(pack->fd, delta_data_offset, SEEK_SET) == -1) {
1280 e0ab43e7 2018-03-16 stsp err = got_error_from_errno();
1281 e0ab43e7 2018-03-16 stsp goto done;
1283 8b2180d4 2018-04-26 stsp err = got_inflate_to_mem_fd(&base_buf, &base_len,
1284 8b2180d4 2018-04-26 stsp pack->fd);
1285 e0ab43e7 2018-03-16 stsp if (base_len < max_size) {
1286 e0ab43e7 2018-03-16 stsp uint8_t *p;
1287 e0ab43e7 2018-03-16 stsp p = reallocarray(base_buf, 1, max_size);
1288 e0ab43e7 2018-03-16 stsp if (p == NULL) {
1289 0a585a0d 2018-03-17 stsp err = got_error_from_errno();
1290 e0ab43e7 2018-03-16 stsp goto done;
1292 e0ab43e7 2018-03-16 stsp base_buf = p;
1295 e0ab43e7 2018-03-16 stsp goto done;
1300 a53d2f13 2018-03-17 stsp err = got_delta_apply_in_mem(base_buf, delta->delta_buf,
1301 a53d2f13 2018-03-17 stsp delta->delta_len, accum_buf, &accum_size);
1304 e0ab43e7 2018-03-16 stsp goto done;
1306 e0ab43e7 2018-03-16 stsp if (n < deltas->nentries) {
1307 e0ab43e7 2018-03-16 stsp /* Accumulated delta becomes the new base. */
1308 e0ab43e7 2018-03-16 stsp uint8_t *tmp = accum_buf;
1309 e0ab43e7 2018-03-16 stsp accum_buf = base_buf;
1310 e0ab43e7 2018-03-16 stsp base_buf = tmp;
1315 e0ab43e7 2018-03-16 stsp free(base_buf);
1316 e0ab43e7 2018-03-16 stsp if (err) {
1317 e0ab43e7 2018-03-16 stsp free(accum_buf);
1318 e0ab43e7 2018-03-16 stsp *outbuf = NULL;
1319 e0ab43e7 2018-03-16 stsp *outlen = 0;
1321 e0ab43e7 2018-03-16 stsp *outbuf = accum_buf;
1322 e0ab43e7 2018-03-16 stsp *outlen = accum_size;
1324 efd2a263 2018-01-19 stsp return err;
1327 3ee5fc21 2018-01-17 stsp const struct got_error *
1328 3ee5fc21 2018-01-17 stsp got_packfile_extract_object(FILE **f, struct got_object *obj,
1329 3ee5fc21 2018-01-17 stsp struct got_repository *repo)
1331 3ee5fc21 2018-01-17 stsp const struct got_error *err = NULL;
1333 8b2180d4 2018-04-26 stsp *f = NULL;
1335 3ee5fc21 2018-01-17 stsp if ((obj->flags & GOT_OBJ_FLAG_PACKED) == 0)
1336 3ee5fc21 2018-01-17 stsp return got_error(GOT_ERR_OBJ_NOT_PACKED);
1338 040bf4a1 2018-04-01 stsp *f = got_opentemp();
1339 040bf4a1 2018-04-01 stsp if (*f == NULL) {
1340 8b2180d4 2018-04-26 stsp err = got_error_from_errno();
1341 040bf4a1 2018-04-01 stsp goto done;
1344 ef2bccd9 2018-03-16 stsp if ((obj->flags & GOT_OBJ_FLAG_DELTIFIED) == 0) {
1345 72eb3431 2018-04-01 stsp struct got_pack *pack;
1347 72eb3431 2018-04-01 stsp pack = get_cached_pack(obj->path_packfile, repo);
1348 72eb3431 2018-04-01 stsp if (pack == NULL) {
1349 72eb3431 2018-04-01 stsp err = cache_pack(&pack, obj->path_packfile, NULL, repo);
1351 72eb3431 2018-04-01 stsp goto done;
1354 0c048b15 2018-04-27 stsp if (obj->pack_offset >= pack->filesize) {
1355 0c048b15 2018-04-27 stsp err = got_error(GOT_ERR_PACK_OFFSET);
1356 0c048b15 2018-04-27 stsp goto done;
1358 8b2180d4 2018-04-26 stsp if (lseek(pack->fd, obj->pack_offset, SEEK_SET) == -1) {
1359 6691714a 2018-01-23 stsp err = got_error_from_errno();
1360 c52ac529 2018-03-17 stsp goto done;
1363 8b2180d4 2018-04-26 stsp err = got_inflate_to_file_fd(&obj->size, pack->fd, *f);
1365 8b2180d4 2018-04-26 stsp err = dump_delta_chain_to_file(&obj->size,
1366 8b2180d4 2018-04-26 stsp &obj->deltas, *f, repo);
1368 d0f3be7c 2018-03-17 stsp if (err && *f) {
1369 3ee5fc21 2018-01-17 stsp fclose(*f);
1370 d0f3be7c 2018-03-17 stsp *f = NULL;
1372 a1fd68d8 2018-01-12 stsp return err;
1375 e0ab43e7 2018-03-16 stsp const struct got_error *
1376 e0ab43e7 2018-03-16 stsp got_packfile_extract_object_to_mem(uint8_t **buf, size_t *len,
1377 e0ab43e7 2018-03-16 stsp struct got_object *obj, struct got_repository *repo)
1379 e0ab43e7 2018-03-16 stsp const struct got_error *err = NULL;
1381 e0ab43e7 2018-03-16 stsp if ((obj->flags & GOT_OBJ_FLAG_PACKED) == 0)
1382 e0ab43e7 2018-03-16 stsp return got_error(GOT_ERR_OBJ_NOT_PACKED);
1384 ef2bccd9 2018-03-16 stsp if ((obj->flags & GOT_OBJ_FLAG_DELTIFIED) == 0) {
1385 72eb3431 2018-04-01 stsp struct got_pack *pack;
1387 72eb3431 2018-04-01 stsp pack = get_cached_pack(obj->path_packfile, repo);
1388 72eb3431 2018-04-01 stsp if (pack == NULL) {
1389 72eb3431 2018-04-01 stsp err = cache_pack(&pack, obj->path_packfile, NULL, repo);
1391 72eb3431 2018-04-01 stsp goto done;
1394 0c048b15 2018-04-27 stsp if (obj->pack_offset >= pack->filesize) {
1395 0c048b15 2018-04-27 stsp err = got_error(GOT_ERR_PACK_OFFSET);
1396 0c048b15 2018-04-27 stsp goto done;
1398 8b2180d4 2018-04-26 stsp if (lseek(pack->fd, obj->pack_offset, SEEK_SET) == -1) {
1399 e0ab43e7 2018-03-16 stsp err = got_error_from_errno();
1400 e0ab43e7 2018-03-16 stsp goto done;
1403 8b2180d4 2018-04-26 stsp err = got_inflate_to_mem_fd(buf, len, pack->fd);
1405 72eb3431 2018-04-01 stsp err = dump_delta_chain_to_mem(buf, len, &obj->deltas, repo);
1407 e0ab43e7 2018-03-16 stsp return err;
