2 5d56da81 2019-01-13 stsp * Copyright (c) 2018, 2019 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>
20 876c234b 2018-09-10 stsp #include <sys/uio.h>
21 57b35b75 2018-06-22 stsp #include <sys/mman.h>
23 7e656b93 2018-03-17 stsp #include <fcntl.h>
24 a1fd68d8 2018-01-12 stsp #include <errno.h>
25 0a0a3048 2018-01-10 stsp #include <stdio.h>
26 a1fd68d8 2018-01-12 stsp #include <stdint.h>
27 0a0a3048 2018-01-10 stsp #include <stdlib.h>
28 0a0a3048 2018-01-10 stsp #include <string.h>
29 0a0a3048 2018-01-10 stsp #include <limits.h>
30 0a0a3048 2018-01-10 stsp #include <sha1.h>
31 0a0a3048 2018-01-10 stsp #include <endian.h>
32 a1fd68d8 2018-01-12 stsp #include <zlib.h>
33 876c234b 2018-09-10 stsp #include <imsg.h>
35 0a0a3048 2018-01-10 stsp #include "got_error.h"
36 a1fd68d8 2018-01-12 stsp #include "got_object.h"
37 511a516b 2018-05-19 stsp #include "got_opentemp.h"
38 324d37e7 2019-05-11 stsp #include "got_path.h"
40 718b3ab0 2018-03-17 stsp #include "got_lib_sha1.h"
41 718b3ab0 2018-03-17 stsp #include "got_lib_delta.h"
42 63581804 2018-07-09 stsp #include "got_lib_inflate.h"
43 718b3ab0 2018-03-17 stsp #include "got_lib_object.h"
44 dd88155e 2019-06-29 stsp #include "got_lib_object_parse.h"
45 876c234b 2018-09-10 stsp #include "got_lib_privsep.h"
46 15a94983 2018-12-23 stsp #include "got_lib_pack.h"
48 79b11c62 2018-03-09 stsp #ifndef nitems
49 79b11c62 2018-03-09 stsp #define nitems(_a) (sizeof(_a) / sizeof((_a)[0]))
53 a1fd68d8 2018-01-12 stsp #define MIN(_a,_b) ((_a) < (_b) ? (_a) : (_b))
56 0a0a3048 2018-01-10 stsp static const struct got_error *
57 0a0a3048 2018-01-10 stsp verify_fanout_table(uint32_t *fanout_table)
61 0a0a3048 2018-01-10 stsp for (i = 0; i < 0xff - 1; i++) {
62 a1fd68d8 2018-01-12 stsp if (be32toh(fanout_table[i]) > be32toh(fanout_table[i + 1]))
63 0a0a3048 2018-01-10 stsp return got_error(GOT_ERR_BAD_PACKIDX);
66 0a0a3048 2018-01-10 stsp return NULL;
69 1510f469 2018-09-09 stsp const struct got_error *
70 817c5a18 2018-09-09 stsp got_packidx_init_hdr(struct got_packidx *p, int verify)
72 0a0a3048 2018-01-10 stsp const struct got_error *err = NULL;
73 817c5a18 2018-09-09 stsp struct got_packidx_v2_hdr *h;
74 0ebaf008 2018-01-10 stsp SHA1_CTX ctx;
75 0ebaf008 2018-01-10 stsp uint8_t sha1[SHA1_DIGEST_LENGTH];
76 817c5a18 2018-09-09 stsp size_t nobj, len_fanout, len_ids, offset, remain;
80 0ebaf008 2018-01-10 stsp SHA1Init(&ctx);
82 57b35b75 2018-06-22 stsp h = &p->hdr;
84 57b35b75 2018-06-22 stsp remain = p->len;
86 57b35b75 2018-06-22 stsp if (remain < sizeof(*h->magic)) {
87 0a0a3048 2018-01-10 stsp err = got_error(GOT_ERR_BAD_PACKIDX);
91 fc79a48d 2018-07-09 stsp h->magic = (uint32_t *)(p->map + offset);
93 fc79a48d 2018-07-09 stsp h->magic = malloc(sizeof(*h->magic));
94 fc79a48d 2018-07-09 stsp if (h->magic == NULL) {
95 638f9024 2019-05-13 stsp err = got_error_from_errno("malloc");
98 fc79a48d 2018-07-09 stsp n = read(p->fd, h->magic, sizeof(*h->magic));
99 b1317e77 2019-09-22 stsp if (n < 0) {
100 638f9024 2019-05-13 stsp err = got_error_from_errno("read");
102 b1317e77 2019-09-22 stsp } else if (n != sizeof(*h->magic)) {
103 fc79a48d 2018-07-09 stsp err = got_error(GOT_ERR_BAD_PACKIDX);
107 57b35b75 2018-06-22 stsp if (betoh32(*h->magic) != GOT_PACKIDX_V2_MAGIC) {
108 57b35b75 2018-06-22 stsp err = got_error(GOT_ERR_BAD_PACKIDX);
111 57b35b75 2018-06-22 stsp offset += sizeof(*h->magic);
112 57b35b75 2018-06-22 stsp remain -= sizeof(*h->magic);
114 0cb74cf4 2018-07-08 stsp if (verify)
115 0cb74cf4 2018-07-08 stsp SHA1Update(&ctx, (uint8_t *)h->magic, sizeof(*h->magic));
117 57b35b75 2018-06-22 stsp if (remain < sizeof(*h->version)) {
118 57b35b75 2018-06-22 stsp err = got_error(GOT_ERR_BAD_PACKIDX);
121 fc79a48d 2018-07-09 stsp if (p->map)
122 fc79a48d 2018-07-09 stsp h->version = (uint32_t *)(p->map + offset);
124 fc79a48d 2018-07-09 stsp h->version = malloc(sizeof(*h->version));
125 fc79a48d 2018-07-09 stsp if (h->version == NULL) {
126 638f9024 2019-05-13 stsp err = got_error_from_errno("malloc");
129 fc79a48d 2018-07-09 stsp n = read(p->fd, h->version, sizeof(*h->version));
130 c6368c2e 2019-10-11 stsp if (n < 0) {
131 638f9024 2019-05-13 stsp err = got_error_from_errno("read");
133 c6368c2e 2019-10-11 stsp } else if (n != sizeof(*h->version)) {
134 fc79a48d 2018-07-09 stsp err = got_error(GOT_ERR_BAD_PACKIDX);
138 57b35b75 2018-06-22 stsp if (betoh32(*h->version) != GOT_PACKIDX_VERSION) {
139 0a0a3048 2018-01-10 stsp err = got_error(GOT_ERR_BAD_PACKIDX);
142 57b35b75 2018-06-22 stsp offset += sizeof(*h->version);
143 57b35b75 2018-06-22 stsp remain -= sizeof(*h->version);
145 0cb74cf4 2018-07-08 stsp if (verify)
146 0cb74cf4 2018-07-08 stsp SHA1Update(&ctx, (uint8_t *)h->version, sizeof(*h->version));
148 57b35b75 2018-06-22 stsp len_fanout =
149 57b35b75 2018-06-22 stsp sizeof(*h->fanout_table) * GOT_PACKIDX_V2_FANOUT_TABLE_ITEMS;
150 57b35b75 2018-06-22 stsp if (remain < len_fanout) {
151 57b35b75 2018-06-22 stsp err = got_error(GOT_ERR_BAD_PACKIDX);
154 fc79a48d 2018-07-09 stsp if (p->map)
155 fc79a48d 2018-07-09 stsp h->fanout_table = (uint32_t *)(p->map + offset);
157 fc79a48d 2018-07-09 stsp h->fanout_table = malloc(len_fanout);
158 fc79a48d 2018-07-09 stsp if (h->fanout_table == NULL) {
159 638f9024 2019-05-13 stsp err = got_error_from_errno("malloc");
162 fc79a48d 2018-07-09 stsp n = read(p->fd, h->fanout_table, len_fanout);
163 c6368c2e 2019-10-11 stsp if (n < 0) {
164 638f9024 2019-05-13 stsp err = got_error_from_errno("read");
166 c6368c2e 2019-10-11 stsp } else if (n != len_fanout) {
167 fc79a48d 2018-07-09 stsp err = got_error(GOT_ERR_BAD_PACKIDX);
171 c8262310 2018-06-04 stsp err = verify_fanout_table(h->fanout_table);
174 0cb74cf4 2018-07-08 stsp if (verify)
175 0cb74cf4 2018-07-08 stsp SHA1Update(&ctx, (uint8_t *)h->fanout_table, len_fanout);
176 57b35b75 2018-06-22 stsp offset += len_fanout;
177 57b35b75 2018-06-22 stsp remain -= len_fanout;
179 c8262310 2018-06-04 stsp nobj = betoh32(h->fanout_table[0xff]);
180 57b35b75 2018-06-22 stsp len_ids = nobj * sizeof(*h->sorted_ids);
181 57b35b75 2018-06-22 stsp if (len_ids <= nobj || len_ids > remain) {
182 57b35b75 2018-06-22 stsp err = got_error(GOT_ERR_BAD_PACKIDX);
185 fc79a48d 2018-07-09 stsp if (p->map)
186 fc79a48d 2018-07-09 stsp h->sorted_ids =
187 fc79a48d 2018-07-09 stsp (struct got_packidx_object_id *)((uint8_t*)(p->map + offset));
189 fc79a48d 2018-07-09 stsp h->sorted_ids = malloc(len_ids);
190 fc79a48d 2018-07-09 stsp if (h->sorted_ids == NULL) {
191 fc79a48d 2018-07-09 stsp err = got_error(GOT_ERR_BAD_PACKIDX);
194 fc79a48d 2018-07-09 stsp n = read(p->fd, h->sorted_ids, len_ids);
196 638f9024 2019-05-13 stsp err = got_error_from_errno("read");
197 faaa1c0f 2018-09-15 stsp else if (n != len_ids) {
198 fc79a48d 2018-07-09 stsp err = got_error(GOT_ERR_BAD_PACKIDX);
202 0cb74cf4 2018-07-08 stsp if (verify)
203 0cb74cf4 2018-07-08 stsp SHA1Update(&ctx, (uint8_t *)h->sorted_ids, len_ids);
204 57b35b75 2018-06-22 stsp offset += len_ids;
205 57b35b75 2018-06-22 stsp remain -= len_ids;
207 57b35b75 2018-06-22 stsp if (remain < nobj * sizeof(*h->crc32)) {
208 57b35b75 2018-06-22 stsp err = got_error(GOT_ERR_BAD_PACKIDX);
211 fc79a48d 2018-07-09 stsp if (p->map)
212 fc79a48d 2018-07-09 stsp h->crc32 = (uint32_t *)((uint8_t*)(p->map + offset));
214 fc79a48d 2018-07-09 stsp h->crc32 = malloc(nobj * sizeof(*h->crc32));
215 fc79a48d 2018-07-09 stsp if (h->crc32 == NULL) {
216 638f9024 2019-05-13 stsp err = got_error_from_errno("malloc");
219 fc79a48d 2018-07-09 stsp n = read(p->fd, h->crc32, nobj * sizeof(*h->crc32));
221 638f9024 2019-05-13 stsp err = got_error_from_errno("read");
222 faaa1c0f 2018-09-15 stsp else if (n != nobj * sizeof(*h->crc32)) {
223 fc79a48d 2018-07-09 stsp err = got_error(GOT_ERR_BAD_PACKIDX);
227 0cb74cf4 2018-07-08 stsp if (verify)
228 0cb74cf4 2018-07-08 stsp SHA1Update(&ctx, (uint8_t *)h->crc32, nobj * sizeof(*h->crc32));
229 57b35b75 2018-06-22 stsp remain -= nobj * sizeof(*h->crc32);
230 57b35b75 2018-06-22 stsp offset += nobj * sizeof(*h->crc32);
232 57b35b75 2018-06-22 stsp if (remain < nobj * sizeof(*h->offsets)) {
233 57b35b75 2018-06-22 stsp err = got_error(GOT_ERR_BAD_PACKIDX);
236 fc79a48d 2018-07-09 stsp if (p->map)
237 fc79a48d 2018-07-09 stsp h->offsets = (uint32_t *)((uint8_t*)(p->map + offset));
239 fc79a48d 2018-07-09 stsp h->offsets = malloc(nobj * sizeof(*h->offsets));
240 fc79a48d 2018-07-09 stsp if (h->offsets == NULL) {
241 638f9024 2019-05-13 stsp err = got_error_from_errno("malloc");
244 fc79a48d 2018-07-09 stsp n = read(p->fd, h->offsets, nobj * sizeof(*h->offsets));
246 638f9024 2019-05-13 stsp err = got_error_from_errno("read");
247 faaa1c0f 2018-09-15 stsp else if (n != nobj * sizeof(*h->offsets)) {
248 fc79a48d 2018-07-09 stsp err = got_error(GOT_ERR_BAD_PACKIDX);
252 0cb74cf4 2018-07-08 stsp if (verify)
253 0cb74cf4 2018-07-08 stsp SHA1Update(&ctx, (uint8_t *)h->offsets,
254 0cb74cf4 2018-07-08 stsp nobj * sizeof(*h->offsets));
255 57b35b75 2018-06-22 stsp remain -= nobj * sizeof(*h->offsets);
256 57b35b75 2018-06-22 stsp offset += nobj * sizeof(*h->offsets);
258 0a0a3048 2018-01-10 stsp /* Large file offsets are contained only in files > 2GB. */
259 5e6be232 2019-11-08 stsp for (i = 0; i < nobj; i++) {
260 5e6be232 2019-11-08 stsp uint32_t o = betoh32(h->offsets[i]);
261 5e6be232 2019-11-08 stsp if (o & GOT_PACKIDX_OFFSET_VAL_IS_LARGE_IDX)
262 5e6be232 2019-11-08 stsp p->nlargeobj++;
264 5e6be232 2019-11-08 stsp if (p->nlargeobj == 0)
265 0a0a3048 2018-01-10 stsp goto checksum;
267 5e6be232 2019-11-08 stsp if (remain < p->nlargeobj * sizeof(*h->large_offsets)) {
268 57b35b75 2018-06-22 stsp err = got_error(GOT_ERR_BAD_PACKIDX);
271 fc79a48d 2018-07-09 stsp if (p->map)
272 fc79a48d 2018-07-09 stsp h->large_offsets = (uint64_t *)((uint8_t*)(p->map + offset));
274 5e6be232 2019-11-08 stsp h->large_offsets = malloc(p->nlargeobj *
275 5e6be232 2019-11-08 stsp sizeof(*h->large_offsets));
276 de30857e 2019-08-23 stsp if (h->large_offsets == NULL) {
277 638f9024 2019-05-13 stsp err = got_error_from_errno("malloc");
280 fc79a48d 2018-07-09 stsp n = read(p->fd, h->large_offsets,
281 5e6be232 2019-11-08 stsp p->nlargeobj * sizeof(*h->large_offsets));
283 638f9024 2019-05-13 stsp err = got_error_from_errno("read");
284 5e6be232 2019-11-08 stsp else if (n != p->nlargeobj * sizeof(*h->large_offsets)) {
285 fc79a48d 2018-07-09 stsp err = got_error(GOT_ERR_BAD_PACKIDX);
289 0cb74cf4 2018-07-08 stsp if (verify)
290 0cb74cf4 2018-07-08 stsp SHA1Update(&ctx, (uint8_t*)h->large_offsets,
291 5e6be232 2019-11-08 stsp p->nlargeobj * sizeof(*h->large_offsets));
292 5e6be232 2019-11-08 stsp remain -= p->nlargeobj * sizeof(*h->large_offsets);
293 5e6be232 2019-11-08 stsp offset += p->nlargeobj * sizeof(*h->large_offsets);
296 57b35b75 2018-06-22 stsp if (remain < sizeof(*h->trailer)) {
297 57b35b75 2018-06-22 stsp err = got_error(GOT_ERR_BAD_PACKIDX);
300 fc79a48d 2018-07-09 stsp if (p->map)
301 fc79a48d 2018-07-09 stsp h->trailer =
302 fc79a48d 2018-07-09 stsp (struct got_packidx_trailer *)((uint8_t*)(p->map + offset));
304 fc79a48d 2018-07-09 stsp h->trailer = malloc(sizeof(*h->trailer));
305 fc79a48d 2018-07-09 stsp if (h->trailer == NULL) {
306 638f9024 2019-05-13 stsp err = got_error_from_errno("malloc");
309 fc79a48d 2018-07-09 stsp n = read(p->fd, h->trailer, sizeof(*h->trailer));
311 638f9024 2019-05-13 stsp err = got_error_from_errno("read");
312 faaa1c0f 2018-09-15 stsp else if (n != sizeof(*h->trailer)) {
313 fc79a48d 2018-07-09 stsp err = got_error(GOT_ERR_BAD_PACKIDX);
317 0cb74cf4 2018-07-08 stsp if (verify) {
318 0cb74cf4 2018-07-08 stsp SHA1Update(&ctx, h->trailer->packfile_sha1, SHA1_DIGEST_LENGTH);
319 0cb74cf4 2018-07-08 stsp SHA1Final(sha1, &ctx);
320 0cb74cf4 2018-07-08 stsp if (memcmp(h->trailer->packidx_sha1, sha1,
321 0cb74cf4 2018-07-08 stsp SHA1_DIGEST_LENGTH) != 0)
322 0cb74cf4 2018-07-08 stsp err = got_error(GOT_ERR_PACKIDX_CSUM);
325 817c5a18 2018-09-09 stsp return err;
328 817c5a18 2018-09-09 stsp const struct got_error *
329 817c5a18 2018-09-09 stsp got_packidx_open(struct got_packidx **packidx, const char *path, int verify)
331 817c5a18 2018-09-09 stsp const struct got_error *err = NULL;
332 817c5a18 2018-09-09 stsp struct got_packidx *p;
333 57377f07 2019-05-23 stsp struct stat sb;
335 817c5a18 2018-09-09 stsp *packidx = NULL;
337 817c5a18 2018-09-09 stsp p = calloc(1, sizeof(*p));
338 817c5a18 2018-09-09 stsp if (p == NULL)
339 638f9024 2019-05-13 stsp return got_error_from_errno("calloc");
341 a5b57ccf 2019-04-11 stsp p->fd = open(path, O_RDONLY | O_NOFOLLOW);
342 6772cf22 2019-08-28 hiltjo if (p->fd == -1) {
343 6772cf22 2019-08-28 hiltjo err = got_error_from_errno2("open", path);
345 6772cf22 2019-08-28 hiltjo return err;
348 57377f07 2019-05-23 stsp if (fstat(p->fd, &sb) != 0) {
349 57377f07 2019-05-23 stsp err = got_error_from_errno2("fstat", path);
350 817c5a18 2018-09-09 stsp close(p->fd);
352 817c5a18 2018-09-09 stsp return err;
354 57377f07 2019-05-23 stsp p->len = sb.st_size;
355 817c5a18 2018-09-09 stsp if (p->len < sizeof(p->hdr)) {
356 817c5a18 2018-09-09 stsp err = got_error(GOT_ERR_BAD_PACKIDX);
357 817c5a18 2018-09-09 stsp close(p->fd);
359 817c5a18 2018-09-09 stsp return err;
362 817c5a18 2018-09-09 stsp p->path_packidx = strdup(path);
363 817c5a18 2018-09-09 stsp if (p->path_packidx == NULL) {
364 638f9024 2019-05-13 stsp err = got_error_from_errno("strdup");
368 817c5a18 2018-09-09 stsp #ifndef GOT_PACK_NO_MMAP
369 817c5a18 2018-09-09 stsp p->map = mmap(NULL, p->len, PROT_READ, MAP_PRIVATE, p->fd, 0);
370 3a11398b 2019-02-21 stsp if (p->map == MAP_FAILED) {
371 3a11398b 2019-02-21 stsp if (errno != ENOMEM) {
372 638f9024 2019-05-13 stsp err = got_error_from_errno("mmap");
375 817c5a18 2018-09-09 stsp p->map = NULL; /* fall back to read(2) */
379 817c5a18 2018-09-09 stsp err = got_packidx_init_hdr(p, verify);
382 0a0a3048 2018-01-10 stsp got_packidx_close(p);
384 0a0a3048 2018-01-10 stsp *packidx = p;
386 0a0a3048 2018-01-10 stsp return err;
389 57b35b75 2018-06-22 stsp const struct got_error *
390 6fd11751 2018-06-04 stsp got_packidx_close(struct got_packidx *packidx)
392 57b35b75 2018-06-22 stsp const struct got_error *err = NULL;
394 6fd11751 2018-06-04 stsp free(packidx->path_packidx);
395 fc79a48d 2018-07-09 stsp if (packidx->map) {
396 57b35b75 2018-06-22 stsp if (munmap(packidx->map, packidx->len) == -1)
397 638f9024 2019-05-13 stsp err = got_error_from_errno("munmap");
399 fc79a48d 2018-07-09 stsp free(packidx->hdr.magic);
400 fc79a48d 2018-07-09 stsp free(packidx->hdr.version);
401 fc79a48d 2018-07-09 stsp free(packidx->hdr.fanout_table);
402 fc79a48d 2018-07-09 stsp free(packidx->hdr.sorted_ids);
403 fc79a48d 2018-07-09 stsp free(packidx->hdr.crc32);
404 fc79a48d 2018-07-09 stsp free(packidx->hdr.offsets);
405 fc79a48d 2018-07-09 stsp free(packidx->hdr.large_offsets);
406 fc79a48d 2018-07-09 stsp free(packidx->hdr.trailer);
408 3a6ce05a 2019-02-11 stsp if (close(packidx->fd) != 0 && err == NULL)
409 638f9024 2019-05-13 stsp err = got_error_from_errno("close");
410 0a0a3048 2018-01-10 stsp free(packidx);
412 57b35b75 2018-06-22 stsp return err;
415 a1fd68d8 2018-01-12 stsp static off_t
416 6fd11751 2018-06-04 stsp get_object_offset(struct got_packidx *packidx, int idx)
418 6fd11751 2018-06-04 stsp uint32_t offset = betoh32(packidx->hdr.offsets[idx]);
419 a1fd68d8 2018-01-12 stsp if (offset & GOT_PACKIDX_OFFSET_VAL_IS_LARGE_IDX) {
420 a1fd68d8 2018-01-12 stsp uint64_t loffset;
421 a1fd68d8 2018-01-12 stsp idx = offset & GOT_PACKIDX_OFFSET_VAL_MASK;
422 5e6be232 2019-11-08 stsp if (idx < 0 || idx >= packidx->nlargeobj ||
423 6fd11751 2018-06-04 stsp packidx->hdr.large_offsets == NULL)
425 6fd11751 2018-06-04 stsp loffset = betoh64(packidx->hdr.large_offsets[idx]);
426 a1fd68d8 2018-01-12 stsp return (loffset > INT64_MAX ? -1 : (off_t)loffset);
428 a1fd68d8 2018-01-12 stsp return (off_t)(offset & GOT_PACKIDX_OFFSET_VAL_MASK);
432 1510f469 2018-09-09 stsp got_packidx_get_object_idx(struct got_packidx *packidx, struct got_object_id *id)
434 a1fd68d8 2018-01-12 stsp u_int8_t id0 = id->sha1[0];
435 6fd11751 2018-06-04 stsp uint32_t totobj = betoh32(packidx->hdr.fanout_table[0xff]);
436 40aeb19c 2018-06-22 stsp int left = 0, right = totobj - 1;
438 a1fd68d8 2018-01-12 stsp if (id0 > 0)
439 40aeb19c 2018-06-22 stsp left = betoh32(packidx->hdr.fanout_table[id0 - 1]);
441 40aeb19c 2018-06-22 stsp while (left <= right) {
442 57b35b75 2018-06-22 stsp struct got_packidx_object_id *oid;
443 40aeb19c 2018-06-22 stsp int i, cmp;
445 40aeb19c 2018-06-22 stsp i = ((left + right) / 2);
446 40aeb19c 2018-06-22 stsp oid = &packidx->hdr.sorted_ids[i];
447 57b35b75 2018-06-22 stsp cmp = memcmp(id->sha1, oid->sha1, SHA1_DIGEST_LENGTH);
448 16dcbf91 2018-04-01 stsp if (cmp == 0)
450 40aeb19c 2018-06-22 stsp else if (cmp > 0)
451 40aeb19c 2018-06-22 stsp left = i + 1;
452 40aeb19c 2018-06-22 stsp else if (cmp < 0)
453 40aeb19c 2018-06-22 stsp right = i - 1;
459 876c234b 2018-09-10 stsp const struct got_error *
460 dd88155e 2019-06-29 stsp got_packidx_match_id_str_prefix(struct got_object_id_queue *matched_ids,
461 4277420a 2019-06-29 stsp struct got_packidx *packidx, const char *id_str_prefix)
463 dd88155e 2019-06-29 stsp const struct got_error *err = NULL;
464 4277420a 2019-06-29 stsp u_int8_t id0;
465 4277420a 2019-06-29 stsp uint32_t totobj = betoh32(packidx->hdr.fanout_table[0xff]);
466 4277420a 2019-06-29 stsp char hex[3];
467 4277420a 2019-06-29 stsp size_t prefix_len = strlen(id_str_prefix);
468 e09a504c 2019-06-28 stsp struct got_packidx_object_id *oid;
471 dd88155e 2019-06-29 stsp SIMPLEQ_INIT(matched_ids);
473 4277420a 2019-06-29 stsp if (prefix_len < 2)
474 4277420a 2019-06-29 stsp return got_error(GOT_ERR_BAD_OBJ_ID_STR);
476 4277420a 2019-06-29 stsp hex[0] = id_str_prefix[0];
477 4277420a 2019-06-29 stsp hex[1] = id_str_prefix[1];
478 4277420a 2019-06-29 stsp hex[2] = '\0';
479 4277420a 2019-06-29 stsp if (!got_parse_xdigit(&id0, hex))
480 4277420a 2019-06-29 stsp return got_error(GOT_ERR_BAD_OBJ_ID_STR);
482 4277420a 2019-06-29 stsp i = betoh32(packidx->hdr.fanout_table[id0 - 1]);
483 4277420a 2019-06-29 stsp if (i == 0)
484 4277420a 2019-06-29 stsp return NULL;
486 4277420a 2019-06-29 stsp oid = &packidx->hdr.sorted_ids[i];
487 4277420a 2019-06-29 stsp while (i < totobj && oid->sha1[0] == id0) {
488 4277420a 2019-06-29 stsp char id_str[SHA1_DIGEST_STRING_LENGTH];
489 dd88155e 2019-06-29 stsp struct got_object_qid *qid;
492 4277420a 2019-06-29 stsp if (!got_sha1_digest_to_str(oid->sha1, id_str, sizeof(id_str)))
493 4277420a 2019-06-29 stsp return got_error(GOT_ERR_NO_SPACE);
495 4277420a 2019-06-29 stsp cmp = strncmp(id_str, id_str_prefix, prefix_len);
496 4277420a 2019-06-29 stsp if (cmp < 0) {
497 4277420a 2019-06-29 stsp oid = &packidx->hdr.sorted_ids[++i];
499 4277420a 2019-06-29 stsp } else if (cmp > 0)
502 dd88155e 2019-06-29 stsp err = got_object_qid_alloc_partial(&qid);
505 dd88155e 2019-06-29 stsp memcpy(qid->id->sha1, oid->sha1, SHA1_DIGEST_LENGTH);
506 dd88155e 2019-06-29 stsp SIMPLEQ_INSERT_TAIL(matched_ids, qid, entry);
508 4277420a 2019-06-29 stsp oid = &packidx->hdr.sorted_ids[++i];
512 0adc7bcc 2019-06-29 stsp got_object_id_queue_free(matched_ids);
513 dd88155e 2019-06-29 stsp return err;
516 e09a504c 2019-06-28 stsp const struct got_error *
517 876c234b 2018-09-10 stsp got_pack_stop_privsep_child(struct got_pack *pack)
519 96732e0b 2018-11-11 stsp const struct got_error *err = NULL;
521 876c234b 2018-09-10 stsp if (pack->privsep_child == NULL)
522 876c234b 2018-09-10 stsp return NULL;
524 876c234b 2018-09-10 stsp err = got_privsep_send_stop(pack->privsep_child->imsg_fd);
526 96732e0b 2018-11-11 stsp return err;
527 96732e0b 2018-11-11 stsp err = got_privsep_wait_for_child(pack->privsep_child->pid);
528 0dd5271b 2019-05-10 stsp if (close(pack->privsep_child->imsg_fd) != 0 && err == NULL)
529 638f9024 2019-05-13 stsp err = got_error_from_errno("close");
530 876c234b 2018-09-10 stsp free(pack->privsep_child);
531 876c234b 2018-09-10 stsp pack->privsep_child = NULL;
532 876c234b 2018-09-10 stsp return err;
535 d7464085 2018-07-09 stsp const struct got_error *
536 7e656b93 2018-03-17 stsp got_pack_close(struct got_pack *pack)
538 d7464085 2018-07-09 stsp const struct got_error *err = NULL;
540 876c234b 2018-09-10 stsp err = got_pack_stop_privsep_child(pack);
541 876c234b 2018-09-10 stsp if (pack->map && munmap(pack->map, pack->filesize) == -1 && !err)
542 638f9024 2019-05-13 stsp err = got_error_from_errno("munmap");
543 3a6ce05a 2019-02-11 stsp if (pack->fd != -1 && close(pack->fd) != 0 && err == NULL)
544 638f9024 2019-05-13 stsp err = got_error_from_errno("close");
545 8b2180d4 2018-04-26 stsp pack->fd = -1;
546 4589e373 2018-03-17 stsp free(pack->path_packfile);
547 4589e373 2018-03-17 stsp pack->path_packfile = NULL;
548 4589e373 2018-03-17 stsp pack->filesize = 0;
550 c7fe698a 2018-01-23 stsp return err;
553 c7fe698a 2018-01-23 stsp static const struct got_error *
554 d7464085 2018-07-09 stsp parse_object_type_and_size(uint8_t *type, uint64_t *size, size_t *len,
555 d7464085 2018-07-09 stsp struct got_pack *pack, off_t offset)
557 a487c1d0 2018-01-14 stsp uint8_t t = 0;
558 a487c1d0 2018-01-14 stsp uint64_t s = 0;
559 a487c1d0 2018-01-14 stsp uint8_t sizeN;
560 d7464085 2018-07-09 stsp size_t mapoff = 0;
565 d7464085 2018-07-09 stsp if (offset >= pack->filesize)
566 d7464085 2018-07-09 stsp return got_error(GOT_ERR_PACK_OFFSET);
568 d7464085 2018-07-09 stsp if (pack->map) {
569 d7464085 2018-07-09 stsp mapoff = (size_t)offset;
571 d7464085 2018-07-09 stsp if (lseek(pack->fd, offset, SEEK_SET) == -1)
572 638f9024 2019-05-13 stsp return got_error_from_errno("lseek");
576 a1fd68d8 2018-01-12 stsp /* We do not support size values which don't fit in 64 bit. */
578 a487c1d0 2018-01-14 stsp return got_error(GOT_ERR_NO_SPACE);
580 d7464085 2018-07-09 stsp if (pack->map) {
581 d7464085 2018-07-09 stsp sizeN = *(pack->map + mapoff);
582 d7464085 2018-07-09 stsp mapoff += sizeof(sizeN);
584 d7464085 2018-07-09 stsp ssize_t n = read(pack->fd, &sizeN, sizeof(sizeN));
586 638f9024 2019-05-13 stsp return got_error_from_errno("read");
587 d7464085 2018-07-09 stsp if (n != sizeof(sizeN))
588 d7464085 2018-07-09 stsp return got_error(GOT_ERR_BAD_PACKFILE);
590 d7464085 2018-07-09 stsp *len += sizeof(sizeN);
592 a1fd68d8 2018-01-12 stsp if (i == 0) {
593 a487c1d0 2018-01-14 stsp t = (sizeN & GOT_PACK_OBJ_SIZE0_TYPE_MASK) >>
594 a1fd68d8 2018-01-12 stsp GOT_PACK_OBJ_SIZE0_TYPE_MASK_SHIFT;
595 a487c1d0 2018-01-14 stsp s = (sizeN & GOT_PACK_OBJ_SIZE0_VAL_MASK);
597 a1fd68d8 2018-01-12 stsp size_t shift = 4 + 7 * (i - 1);
598 a487c1d0 2018-01-14 stsp s |= ((sizeN & GOT_PACK_OBJ_SIZE_VAL_MASK) << shift);
601 a1fd68d8 2018-01-12 stsp } while (sizeN & GOT_PACK_OBJ_SIZE_MORE);
605 a487c1d0 2018-01-14 stsp return NULL;
608 a1fd68d8 2018-01-12 stsp static const struct got_error *
609 9710aac2 2018-01-19 stsp open_plain_object(struct got_object **obj, const char *path_packfile,
610 c59b3346 2018-09-11 stsp struct got_object_id *id, uint8_t type, off_t offset, size_t size, int idx)
612 6ccb713b 2018-01-19 stsp *obj = calloc(1, sizeof(**obj));
613 6ccb713b 2018-01-19 stsp if (*obj == NULL)
614 638f9024 2019-05-13 stsp return got_error_from_errno("calloc");
616 6ccb713b 2018-01-19 stsp (*obj)->path_packfile = strdup(path_packfile);
617 6ccb713b 2018-01-19 stsp if ((*obj)->path_packfile == NULL) {
618 638f9024 2019-05-13 stsp const struct got_error *err = got_error_from_errno("strdup");
619 6ccb713b 2018-01-19 stsp free(*obj);
620 6ccb713b 2018-01-19 stsp *obj = NULL;
621 0a585a0d 2018-03-17 stsp return err;
624 6ccb713b 2018-01-19 stsp (*obj)->type = type;
625 6ccb713b 2018-01-19 stsp (*obj)->flags = GOT_OBJ_FLAG_PACKED;
626 c59b3346 2018-09-11 stsp (*obj)->pack_idx = idx;
627 6ccb713b 2018-01-19 stsp (*obj)->hdrlen = 0;
628 6ccb713b 2018-01-19 stsp (*obj)->size = size;
629 106807b4 2018-09-15 stsp memcpy(&(*obj)->id, id, sizeof((*obj)->id));
630 6ccb713b 2018-01-19 stsp (*obj)->pack_offset = offset;
632 b107e67f 2018-01-19 stsp return NULL;
635 b107e67f 2018-01-19 stsp static const struct got_error *
636 d7464085 2018-07-09 stsp parse_negative_offset(int64_t *offset, size_t *len, struct got_pack *pack,
637 d7464085 2018-07-09 stsp off_t delta_offset)
639 b107e67f 2018-01-19 stsp int64_t o = 0;
640 b107e67f 2018-01-19 stsp uint8_t offN;
643 a0de39f3 2019-08-09 stsp *offset = 0;
647 b107e67f 2018-01-19 stsp /* We do not support offset values which don't fit in 64 bit. */
649 b107e67f 2018-01-19 stsp return got_error(GOT_ERR_NO_SPACE);
651 d7464085 2018-07-09 stsp if (pack->map) {
652 d7464085 2018-07-09 stsp size_t mapoff;
653 d7464085 2018-07-09 stsp if (delta_offset >= pack->filesize)
654 d7464085 2018-07-09 stsp return got_error(GOT_ERR_PACK_OFFSET);
655 d7464085 2018-07-09 stsp mapoff = (size_t)delta_offset + *len;
656 d7464085 2018-07-09 stsp offN = *(pack->map + mapoff);
659 d7464085 2018-07-09 stsp n = read(pack->fd, &offN, sizeof(offN));
661 638f9024 2019-05-13 stsp return got_error_from_errno("read");
662 d7464085 2018-07-09 stsp if (n != sizeof(offN))
663 d7464085 2018-07-09 stsp return got_error(GOT_ERR_BAD_PACKFILE);
665 d7464085 2018-07-09 stsp *len += sizeof(offN);
667 b107e67f 2018-01-19 stsp if (i == 0)
668 b107e67f 2018-01-19 stsp o = (offN & GOT_PACK_OBJ_DELTA_OFF_VAL_MASK);
672 cecc778e 2018-01-23 stsp o += (offN & GOT_PACK_OBJ_DELTA_OFF_VAL_MASK);
675 b107e67f 2018-01-19 stsp } while (offN & GOT_PACK_OBJ_DELTA_OFF_MORE);
677 b107e67f 2018-01-19 stsp *offset = o;
678 6ccb713b 2018-01-19 stsp return NULL;
681 6ccb713b 2018-01-19 stsp static const struct got_error *
682 d7464085 2018-07-09 stsp parse_offset_delta(off_t *base_offset, size_t *len, struct got_pack *pack,
683 d7464085 2018-07-09 stsp off_t offset, int tslen)
685 96f5e8b3 2018-01-23 stsp const struct got_error *err;
686 b107e67f 2018-01-19 stsp int64_t negoffset;
687 b107e67f 2018-01-19 stsp size_t negofflen;
691 d7464085 2018-07-09 stsp err = parse_negative_offset(&negoffset, &negofflen, pack,
692 d7464085 2018-07-09 stsp offset + tslen);
694 b107e67f 2018-01-19 stsp return err;
696 b107e67f 2018-01-19 stsp /* Compute the base object's offset (must be in the same pack file). */
697 96f5e8b3 2018-01-23 stsp *base_offset = (offset - negoffset);
698 96f5e8b3 2018-01-23 stsp if (*base_offset <= 0)
699 b107e67f 2018-01-19 stsp return got_error(GOT_ERR_BAD_PACKFILE);
701 d7464085 2018-07-09 stsp *len = negofflen;
702 96f5e8b3 2018-01-23 stsp return NULL;
705 0e22967e 2018-02-11 stsp static const struct got_error *
706 c8ecd499 2018-09-09 stsp resolve_delta_chain(struct got_delta_chain *, struct got_packidx *,
707 c8ecd499 2018-09-09 stsp struct got_pack *, off_t, size_t, int, size_t, unsigned int);
709 96f5e8b3 2018-01-23 stsp static const struct got_error *
710 c336f889 2018-07-23 stsp add_delta(struct got_delta_chain *deltas, off_t delta_offset, size_t tslen,
711 c336f889 2018-07-23 stsp int delta_type, size_t delta_size, size_t delta_data_offset,
712 c336f889 2018-07-23 stsp uint8_t *delta_buf, size_t delta_len)
714 bdd2fbb3 2018-02-11 stsp struct got_delta *delta;
716 c336f889 2018-07-23 stsp delta = got_delta_open(delta_offset, tslen, delta_type, delta_size,
717 c336f889 2018-07-23 stsp delta_data_offset, delta_buf,
718 a53d2f13 2018-03-17 stsp delta_len);
719 bdd2fbb3 2018-02-11 stsp if (delta == NULL)
720 638f9024 2019-05-13 stsp return got_error_from_errno("got_delta_open");
721 bdd2fbb3 2018-02-11 stsp /* delta is freed in got_object_close() */
722 bdd2fbb3 2018-02-11 stsp deltas->nentries++;
723 bdd2fbb3 2018-02-11 stsp SIMPLEQ_INSERT_HEAD(&deltas->entries, delta, entry);
724 bdd2fbb3 2018-02-11 stsp return NULL;
727 bdd2fbb3 2018-02-11 stsp static const struct got_error *
728 6b9c9673 2018-01-23 stsp resolve_offset_delta(struct got_delta_chain *deltas,
729 c8ecd499 2018-09-09 stsp struct got_packidx *packidx, struct got_pack *pack, off_t delta_offset,
730 c8ecd499 2018-09-09 stsp size_t tslen, int delta_type, size_t delta_size, unsigned int recursion)
733 a3500804 2018-01-23 stsp const struct got_error *err;
734 c3703302 2018-01-23 stsp off_t base_offset;
735 c3703302 2018-01-23 stsp uint8_t base_type;
736 c3703302 2018-01-23 stsp uint64_t base_size;
737 c3703302 2018-01-23 stsp size_t base_tslen;
738 bdd2fbb3 2018-02-11 stsp off_t delta_data_offset;
739 a53d2f13 2018-03-17 stsp uint8_t *delta_buf;
740 d7464085 2018-07-09 stsp size_t delta_len, consumed;
742 d7464085 2018-07-09 stsp err = parse_offset_delta(&base_offset, &consumed, pack,
743 d7464085 2018-07-09 stsp delta_offset, tslen);
745 a3500804 2018-01-23 stsp return err;
747 d7464085 2018-07-09 stsp delta_data_offset = delta_offset + tslen + consumed;
748 d7464085 2018-07-09 stsp if (delta_data_offset >= pack->filesize)
749 d7464085 2018-07-09 stsp return got_error(GOT_ERR_PACK_OFFSET);
751 d7464085 2018-07-09 stsp if (pack->map == NULL) {
752 d7464085 2018-07-09 stsp delta_data_offset = lseek(pack->fd, 0, SEEK_CUR);
753 d7464085 2018-07-09 stsp if (delta_data_offset == -1)
754 638f9024 2019-05-13 stsp return got_error_from_errno("lseek");
757 d7464085 2018-07-09 stsp if (pack->map) {
758 d7464085 2018-07-09 stsp size_t mapoff = (size_t)delta_data_offset;
759 d7464085 2018-07-09 stsp err = got_inflate_to_mem_mmap(&delta_buf, &delta_len, pack->map,
760 d7464085 2018-07-09 stsp mapoff, pack->filesize - mapoff);
762 d7464085 2018-07-09 stsp return err;
765 d7464085 2018-07-09 stsp err = got_inflate_to_mem_fd(&delta_buf, &delta_len, pack->fd);
767 d7464085 2018-07-09 stsp return err;
770 c336f889 2018-07-23 stsp err = add_delta(deltas, delta_offset, tslen, delta_type, delta_size,
771 c336f889 2018-07-23 stsp delta_data_offset, delta_buf, delta_len);
773 1a35c1bc 2019-05-22 stsp return err;
775 c3703302 2018-01-23 stsp /* An offset delta must be in the same packfile. */
776 1a35c1bc 2019-05-22 stsp if (base_offset >= pack->filesize)
777 1a35c1bc 2019-05-22 stsp return got_error(GOT_ERR_PACK_OFFSET);
779 348f621c 2018-01-23 stsp err = parse_object_type_and_size(&base_type, &base_size, &base_tslen,
780 d7464085 2018-07-09 stsp pack, base_offset);
782 1a35c1bc 2019-05-22 stsp return err;
784 1a35c1bc 2019-05-22 stsp return resolve_delta_chain(deltas, packidx, pack, base_offset,
785 b0e2201a 2018-06-22 stsp base_tslen, base_type, base_size, recursion - 1);
788 c3703302 2018-01-23 stsp static const struct got_error *
789 c8ecd499 2018-09-09 stsp resolve_ref_delta(struct got_delta_chain *deltas, struct got_packidx *packidx,
790 c8ecd499 2018-09-09 stsp struct got_pack *pack, off_t delta_offset, size_t tslen, int delta_type,
791 c8ecd499 2018-09-09 stsp size_t delta_size, unsigned int recursion)
793 6b9c9673 2018-01-23 stsp const struct got_error *err;
794 6b9c9673 2018-01-23 stsp struct got_object_id id;
796 6b9c9673 2018-01-23 stsp off_t base_offset;
797 6b9c9673 2018-01-23 stsp uint8_t base_type;
798 6b9c9673 2018-01-23 stsp uint64_t base_size;
799 6b9c9673 2018-01-23 stsp size_t base_tslen;
800 bdd2fbb3 2018-02-11 stsp off_t delta_data_offset;
801 1a35c1bc 2019-05-22 stsp uint8_t *delta_buf;
802 a53d2f13 2018-03-17 stsp size_t delta_len;
804 d7464085 2018-07-09 stsp if (delta_offset >= pack->filesize)
805 d7464085 2018-07-09 stsp return got_error(GOT_ERR_PACK_OFFSET);
806 45202a8f 2018-07-11 stsp delta_data_offset = delta_offset + tslen;
807 d7464085 2018-07-09 stsp if (delta_data_offset >= pack->filesize)
808 d7464085 2018-07-09 stsp return got_error(GOT_ERR_PACK_OFFSET);
810 d7464085 2018-07-09 stsp if (pack->map == NULL) {
811 d7464085 2018-07-09 stsp delta_data_offset = lseek(pack->fd, 0, SEEK_CUR);
812 d7464085 2018-07-09 stsp if (delta_data_offset == -1)
813 638f9024 2019-05-13 stsp return got_error_from_errno("lseek");
816 d7464085 2018-07-09 stsp if (pack->map) {
817 45202a8f 2018-07-11 stsp size_t mapoff = (size_t)delta_data_offset;
818 d7464085 2018-07-09 stsp memcpy(&id, pack->map + mapoff, sizeof(id));
819 d7464085 2018-07-09 stsp mapoff += sizeof(id);
820 d7464085 2018-07-09 stsp err = got_inflate_to_mem_mmap(&delta_buf, &delta_len, pack->map,
821 45202a8f 2018-07-11 stsp mapoff, pack->filesize - mapoff);
823 1a35c1bc 2019-05-22 stsp return err;
825 d7464085 2018-07-09 stsp ssize_t n = read(pack->fd, &id, sizeof(id));
827 638f9024 2019-05-13 stsp return got_error_from_errno("read");
828 d7464085 2018-07-09 stsp if (n != sizeof(id))
829 d7464085 2018-07-09 stsp return got_error(GOT_ERR_BAD_PACKFILE);
830 d7464085 2018-07-09 stsp err = got_inflate_to_mem_fd(&delta_buf, &delta_len, pack->fd);
832 1a35c1bc 2019-05-22 stsp return err;
835 c336f889 2018-07-23 stsp err = add_delta(deltas, delta_offset, tslen, delta_type, delta_size,
836 c336f889 2018-07-23 stsp delta_data_offset, delta_buf, delta_len);
838 1a35c1bc 2019-05-22 stsp return err;
840 652b2703 2018-06-22 stsp /* Delta base must be in the same pack file. */
841 1510f469 2018-09-09 stsp idx = got_packidx_get_object_idx(packidx, &id);
842 1a35c1bc 2019-05-22 stsp if (idx == -1)
843 1a35c1bc 2019-05-22 stsp return got_error(GOT_ERR_BAD_PACKFILE);
845 6b9c9673 2018-01-23 stsp base_offset = get_object_offset(packidx, idx);
846 1a35c1bc 2019-05-22 stsp if (base_offset == (uint64_t)-1)
847 1a35c1bc 2019-05-22 stsp return got_error(GOT_ERR_BAD_PACKIDX);
849 1a35c1bc 2019-05-22 stsp if (base_offset >= pack->filesize)
850 1a35c1bc 2019-05-22 stsp return got_error(GOT_ERR_PACK_OFFSET);
852 6b9c9673 2018-01-23 stsp err = parse_object_type_and_size(&base_type, &base_size, &base_tslen,
853 d7464085 2018-07-09 stsp pack, base_offset);
855 1a35c1bc 2019-05-22 stsp return err;
857 1a35c1bc 2019-05-22 stsp return resolve_delta_chain(deltas, packidx, pack, base_offset,
858 0c048b15 2018-04-27 stsp base_tslen, base_type, base_size, recursion - 1);
861 6b9c9673 2018-01-23 stsp static const struct got_error *
862 c8ecd499 2018-09-09 stsp resolve_delta_chain(struct got_delta_chain *deltas, struct got_packidx *packidx,
863 c8ecd499 2018-09-09 stsp struct got_pack *pack, off_t delta_offset, size_t tslen, int delta_type,
864 c8ecd499 2018-09-09 stsp size_t delta_size, unsigned int recursion)
866 c3703302 2018-01-23 stsp const struct got_error *err = NULL;
868 5b7e13a7 2018-04-02 stsp if (--recursion == 0)
869 5b7e13a7 2018-04-02 stsp return got_error(GOT_ERR_RECURSION);
871 c3703302 2018-01-23 stsp switch (delta_type) {
872 4e8cda55 2018-01-19 stsp case GOT_OBJ_TYPE_COMMIT:
873 4e8cda55 2018-01-19 stsp case GOT_OBJ_TYPE_TREE:
874 4e8cda55 2018-01-19 stsp case GOT_OBJ_TYPE_BLOB:
875 4e8cda55 2018-01-19 stsp case GOT_OBJ_TYPE_TAG:
876 c3703302 2018-01-23 stsp /* Plain types are the final delta base. Recursion ends. */
877 c336f889 2018-07-23 stsp err = add_delta(deltas, delta_offset, tslen, delta_type,
878 c336f889 2018-07-23 stsp delta_size, 0, NULL, 0);
880 a3500804 2018-01-23 stsp case GOT_OBJ_TYPE_OFFSET_DELTA:
881 c8ecd499 2018-09-09 stsp err = resolve_offset_delta(deltas, packidx, pack,
882 b0e2201a 2018-06-22 stsp delta_offset, tslen, delta_type, delta_size, recursion - 1);
884 4e8cda55 2018-01-19 stsp case GOT_OBJ_TYPE_REF_DELTA:
885 c8ecd499 2018-09-09 stsp err = resolve_ref_delta(deltas, packidx, pack,
886 b0e2201a 2018-06-22 stsp delta_offset, tslen, delta_type, delta_size, recursion - 1);
889 4810de4a 2018-04-01 stsp return got_error(GOT_ERR_OBJ_TYPE);
892 96f5e8b3 2018-01-23 stsp return err;
895 96f5e8b3 2018-01-23 stsp static const struct got_error *
896 a98c62b1 2018-09-09 stsp open_delta_object(struct got_object **obj, struct got_packidx *packidx,
897 a98c62b1 2018-09-09 stsp struct got_pack *pack, struct got_object_id *id, off_t offset,
898 c59b3346 2018-09-11 stsp size_t tslen, int delta_type, size_t delta_size, int idx)
900 96f5e8b3 2018-01-23 stsp const struct got_error *err = NULL;
901 96f5e8b3 2018-01-23 stsp int resolved_type;
903 b107e67f 2018-01-19 stsp *obj = calloc(1, sizeof(**obj));
904 b107e67f 2018-01-19 stsp if (*obj == NULL)
905 638f9024 2019-05-13 stsp return got_error_from_errno("calloc");
907 96f5e8b3 2018-01-23 stsp (*obj)->flags = 0;
908 b107e67f 2018-01-19 stsp (*obj)->hdrlen = 0;
909 39e73dc9 2018-03-03 stsp (*obj)->size = 0; /* Not known because deltas aren't applied yet. */
910 106807b4 2018-09-15 stsp memcpy(&(*obj)->id, id, sizeof((*obj)->id));
911 cecc778e 2018-01-23 stsp (*obj)->pack_offset = offset + tslen;
913 1a35c1bc 2019-05-22 stsp SIMPLEQ_INIT(&(*obj)->deltas.entries);
914 1a35c1bc 2019-05-22 stsp (*obj)->flags |= GOT_OBJ_FLAG_DELTIFIED;
916 b0e2201a 2018-06-22 stsp (*obj)->path_packfile = strdup(pack->path_packfile);
917 96f5e8b3 2018-01-23 stsp if ((*obj)->path_packfile == NULL) {
918 638f9024 2019-05-13 stsp err = got_error_from_errno("strdup");
921 96f5e8b3 2018-01-23 stsp (*obj)->flags |= GOT_OBJ_FLAG_PACKED;
922 c59b3346 2018-09-11 stsp (*obj)->pack_idx = idx;
924 c8ecd499 2018-09-09 stsp err = resolve_delta_chain(&(*obj)->deltas, packidx, pack, offset,
925 b0e2201a 2018-06-22 stsp tslen, delta_type, delta_size, GOT_DELTA_CHAIN_RECURSION_MAX);
929 96f5e8b3 2018-01-23 stsp err = got_delta_chain_get_base_type(&resolved_type, &(*obj)->deltas);
932 96f5e8b3 2018-01-23 stsp (*obj)->type = resolved_type;
935 96f5e8b3 2018-01-23 stsp got_object_close(*obj);
936 96f5e8b3 2018-01-23 stsp *obj = NULL;
938 96f5e8b3 2018-01-23 stsp return err;
941 2090a03d 2018-09-09 stsp const struct got_error *
942 2090a03d 2018-09-09 stsp got_packfile_open_object(struct got_object **obj, struct got_pack *pack,
943 6fd11751 2018-06-04 stsp struct got_packidx *packidx, int idx, struct got_object_id *id)
945 a1fd68d8 2018-01-12 stsp const struct got_error *err = NULL;
946 a1fd68d8 2018-01-12 stsp off_t offset;
947 6c00b545 2018-01-17 stsp uint8_t type;
948 6c00b545 2018-01-17 stsp uint64_t size;
949 3ee5fc21 2018-01-17 stsp size_t tslen;
951 6c00b545 2018-01-17 stsp *obj = NULL;
953 a1fd68d8 2018-01-12 stsp offset = get_object_offset(packidx, idx);
954 a1fd68d8 2018-01-12 stsp if (offset == (uint64_t)-1)
955 a1fd68d8 2018-01-12 stsp return got_error(GOT_ERR_BAD_PACKIDX);
957 d7464085 2018-07-09 stsp err = parse_object_type_and_size(&type, &size, &tslen, pack, offset);
959 35c73765 2018-09-09 stsp return err;
961 6c00b545 2018-01-17 stsp switch (type) {
962 6c00b545 2018-01-17 stsp case GOT_OBJ_TYPE_COMMIT:
963 6c00b545 2018-01-17 stsp case GOT_OBJ_TYPE_TREE:
964 6c00b545 2018-01-17 stsp case GOT_OBJ_TYPE_BLOB:
965 d33fc9ef 2018-01-23 stsp case GOT_OBJ_TYPE_TAG:
966 35c73765 2018-09-09 stsp err = open_plain_object(obj, pack->path_packfile, id, type,
967 c59b3346 2018-09-11 stsp offset + tslen, size, idx);
969 b107e67f 2018-01-19 stsp case GOT_OBJ_TYPE_OFFSET_DELTA:
970 a48db7e5 2018-01-23 stsp case GOT_OBJ_TYPE_REF_DELTA:
971 a98c62b1 2018-09-09 stsp err = open_delta_object(obj, packidx, pack, id, offset,
972 c59b3346 2018-09-11 stsp tslen, type, size, idx);
975 4810de4a 2018-04-01 stsp err = got_error(GOT_ERR_OBJ_TYPE);
979 3ee5fc21 2018-01-17 stsp return err;
982 efd2a263 2018-01-19 stsp static const struct got_error *
983 40426839 2018-03-17 stsp get_delta_chain_max_size(uint64_t *max_size, struct got_delta_chain *deltas)
985 22484865 2018-03-13 stsp struct got_delta *delta;
986 22484865 2018-03-13 stsp uint64_t base_size = 0, result_size = 0;
988 22484865 2018-03-13 stsp *max_size = 0;
989 22484865 2018-03-13 stsp SIMPLEQ_FOREACH(delta, &deltas->entries, entry) {
990 22484865 2018-03-13 stsp /* Plain object types are the delta base. */
991 22484865 2018-03-13 stsp if (delta->type != GOT_OBJ_TYPE_COMMIT &&
992 22484865 2018-03-13 stsp delta->type != GOT_OBJ_TYPE_TREE &&
993 22484865 2018-03-13 stsp delta->type != GOT_OBJ_TYPE_BLOB &&
994 22484865 2018-03-13 stsp delta->type != GOT_OBJ_TYPE_TAG) {
995 22484865 2018-03-13 stsp const struct got_error *err;
996 a53d2f13 2018-03-17 stsp err = got_delta_get_sizes(&base_size, &result_size,
997 a53d2f13 2018-03-17 stsp delta->delta_buf, delta->delta_len);
999 22484865 2018-03-13 stsp return err;
1001 22484865 2018-03-13 stsp base_size = delta->size;
1002 22484865 2018-03-13 stsp if (base_size > *max_size)
1003 22484865 2018-03-13 stsp *max_size = base_size;
1004 22484865 2018-03-13 stsp if (result_size > *max_size)
1005 22484865 2018-03-13 stsp *max_size = result_size;
1008 9feb4ff2 2018-03-14 stsp return NULL;
1011 ac544f8c 2019-01-13 stsp const struct got_error *
1012 85a703fa 2019-01-13 stsp got_pack_get_max_delta_object_size(uint64_t *size, struct got_object *obj)
1014 85a703fa 2019-01-13 stsp if ((obj->flags & GOT_OBJ_FLAG_DELTIFIED) == 0)
1015 85a703fa 2019-01-13 stsp return got_error(GOT_ERR_OBJ_TYPE);
1017 ac544f8c 2019-01-13 stsp return get_delta_chain_max_size(size, &obj->deltas);
1020 22484865 2018-03-13 stsp static const struct got_error *
1021 b29656e2 2018-03-16 stsp dump_delta_chain_to_file(size_t *result_size, struct got_delta_chain *deltas,
1022 3840f4c9 2018-09-12 stsp struct got_pack *pack, FILE *outfile, FILE *base_file, FILE *accum_file)
1024 efd2a263 2018-01-19 stsp const struct got_error *err = NULL;
1025 6691714a 2018-01-23 stsp struct got_delta *delta;
1026 8628c62d 2018-03-15 stsp uint8_t *base_buf = NULL, *accum_buf = NULL;
1027 34fca9c3 2018-11-11 stsp size_t base_bufsz = 0, accum_size = 0;
1028 22484865 2018-03-13 stsp uint64_t max_size;
1029 6691714a 2018-01-23 stsp int n = 0;
1031 b29656e2 2018-03-16 stsp *result_size = 0;
1033 710bb5ca 2018-01-23 stsp if (SIMPLEQ_EMPTY(&deltas->entries))
1034 6691714a 2018-01-23 stsp return got_error(GOT_ERR_BAD_DELTA_CHAIN);
1036 8628c62d 2018-03-15 stsp /* We process small enough files entirely in memory for speed. */
1037 40426839 2018-03-17 stsp err = get_delta_chain_max_size(&max_size, deltas);
1039 22484865 2018-03-13 stsp return err;
1040 8628c62d 2018-03-15 stsp if (max_size < GOT_DELTA_RESULT_SIZE_CACHED_MAX) {
1041 8628c62d 2018-03-15 stsp accum_buf = malloc(max_size);
1042 8628c62d 2018-03-15 stsp if (accum_buf == NULL)
1043 638f9024 2019-05-13 stsp return got_error_from_errno("malloc");
1044 3840f4c9 2018-09-12 stsp base_file = NULL;
1045 3840f4c9 2018-09-12 stsp accum_file = NULL;
1048 6691714a 2018-01-23 stsp /* Deltas are ordered in ascending order. */
1049 710bb5ca 2018-01-23 stsp SIMPLEQ_FOREACH(delta, &deltas->entries, entry) {
1050 a6b158cc 2018-02-11 stsp if (n == 0) {
1051 34fca9c3 2018-11-11 stsp size_t mapoff;
1052 0c048b15 2018-04-27 stsp off_t delta_data_offset;
1054 a6b158cc 2018-02-11 stsp /* Plain object types are the delta base. */
1055 a6b158cc 2018-02-11 stsp if (delta->type != GOT_OBJ_TYPE_COMMIT &&
1056 a6b158cc 2018-02-11 stsp delta->type != GOT_OBJ_TYPE_TREE &&
1057 a6b158cc 2018-02-11 stsp delta->type != GOT_OBJ_TYPE_BLOB &&
1058 a6b158cc 2018-02-11 stsp delta->type != GOT_OBJ_TYPE_TAG) {
1059 72eb3431 2018-04-01 stsp err = got_error(GOT_ERR_BAD_DELTA_CHAIN);
1060 72eb3431 2018-04-01 stsp goto done;
1063 0c048b15 2018-04-27 stsp delta_data_offset = delta->offset + delta->tslen;
1064 0c048b15 2018-04-27 stsp if (delta_data_offset >= pack->filesize) {
1065 0c048b15 2018-04-27 stsp err = got_error(GOT_ERR_PACK_OFFSET);
1066 0c048b15 2018-04-27 stsp goto done;
1068 d7464085 2018-07-09 stsp if (pack->map == NULL) {
1069 d7464085 2018-07-09 stsp if (lseek(pack->fd, delta_data_offset, SEEK_SET)
1071 638f9024 2019-05-13 stsp err = got_error_from_errno("lseek");
1072 d7464085 2018-07-09 stsp goto done;
1075 d7464085 2018-07-09 stsp if (base_file) {
1076 d7464085 2018-07-09 stsp if (pack->map) {
1077 d7464085 2018-07-09 stsp mapoff = (size_t)delta_data_offset;
1078 d7464085 2018-07-09 stsp err = got_inflate_to_file_mmap(
1079 34fca9c3 2018-11-11 stsp &base_bufsz, pack->map, mapoff,
1080 d7464085 2018-07-09 stsp pack->filesize - mapoff, base_file);
1082 34fca9c3 2018-11-11 stsp err = got_inflate_to_file_fd(
1083 34fca9c3 2018-11-11 stsp &base_bufsz, pack->fd, base_file);
1085 d7464085 2018-07-09 stsp if (pack->map) {
1086 d7464085 2018-07-09 stsp mapoff = (size_t)delta_data_offset;
1087 d7464085 2018-07-09 stsp err = got_inflate_to_mem_mmap(&base_buf,
1088 34fca9c3 2018-11-11 stsp &base_bufsz, pack->map, mapoff,
1089 d7464085 2018-07-09 stsp pack->filesize - mapoff);
1091 d7464085 2018-07-09 stsp err = got_inflate_to_mem_fd(&base_buf,
1092 34fca9c3 2018-11-11 stsp &base_bufsz, pack->fd);
1095 a6b158cc 2018-02-11 stsp goto done;
1097 8628c62d 2018-03-15 stsp if (base_file)
1098 8628c62d 2018-03-15 stsp rewind(base_file);
1102 8628c62d 2018-03-15 stsp if (base_buf) {
1103 34fca9c3 2018-11-11 stsp err = got_delta_apply_in_mem(base_buf, base_bufsz,
1104 34fca9c3 2018-11-11 stsp delta->delta_buf, delta->delta_len, accum_buf,
1105 34fca9c3 2018-11-11 stsp &accum_size, max_size);
1108 a53d2f13 2018-03-17 stsp err = got_delta_apply(base_file, delta->delta_buf,
1109 a53d2f13 2018-03-17 stsp delta->delta_len,
1110 8628c62d 2018-03-15 stsp /* Final delta application writes to output file. */
1111 b29656e2 2018-03-16 stsp ++n < deltas->nentries ? accum_file : outfile,
1112 b29656e2 2018-03-16 stsp &accum_size);
1115 6691714a 2018-01-23 stsp goto done;
1117 710bb5ca 2018-01-23 stsp if (n < deltas->nentries) {
1118 6691714a 2018-01-23 stsp /* Accumulated delta becomes the new base. */
1119 8628c62d 2018-03-15 stsp if (base_buf) {
1120 8628c62d 2018-03-15 stsp uint8_t *tmp = accum_buf;
1122 34fca9c3 2018-11-11 stsp * Base buffer switches roles with accumulation
1123 34fca9c3 2018-11-11 stsp * buffer. Ensure it can hold the largest
1124 34fca9c3 2018-11-11 stsp * result in the delta chain. The initial
1125 34fca9c3 2018-11-11 stsp * allocation might have been smaller.
1127 34fca9c3 2018-11-11 stsp if (base_bufsz < max_size) {
1128 34fca9c3 2018-11-11 stsp uint8_t *p;
1129 34fca9c3 2018-11-11 stsp p = reallocarray(base_buf, 1, max_size);
1130 34fca9c3 2018-11-11 stsp if (p == NULL) {
1131 638f9024 2019-05-13 stsp err = got_error_from_errno(
1132 230a42bd 2019-05-11 jcs "reallocarray");
1133 34fca9c3 2018-11-11 stsp goto done;
1135 34fca9c3 2018-11-11 stsp base_buf = p;
1136 34fca9c3 2018-11-11 stsp base_bufsz = max_size;
1138 8628c62d 2018-03-15 stsp accum_buf = base_buf;
1139 8628c62d 2018-03-15 stsp base_buf = tmp;
1141 8628c62d 2018-03-15 stsp FILE *tmp = accum_file;
1142 8628c62d 2018-03-15 stsp accum_file = base_file;
1143 8628c62d 2018-03-15 stsp base_file = tmp;
1144 8628c62d 2018-03-15 stsp rewind(base_file);
1145 8628c62d 2018-03-15 stsp rewind(accum_file);
1151 8628c62d 2018-03-15 stsp free(base_buf);
1152 8628c62d 2018-03-15 stsp if (accum_buf) {
1153 8628c62d 2018-03-15 stsp size_t len = fwrite(accum_buf, 1, accum_size, outfile);
1154 8628c62d 2018-03-15 stsp free(accum_buf);
1155 8628c62d 2018-03-15 stsp if (len != accum_size)
1156 673702af 2018-07-23 stsp err = got_ferror(outfile, GOT_ERR_IO);
1158 6691714a 2018-01-23 stsp rewind(outfile);
1159 b29656e2 2018-03-16 stsp if (err == NULL)
1160 b29656e2 2018-03-16 stsp *result_size = accum_size;
1161 e0ab43e7 2018-03-16 stsp return err;
1164 e0ab43e7 2018-03-16 stsp static const struct got_error *
1165 e0ab43e7 2018-03-16 stsp dump_delta_chain_to_mem(uint8_t **outbuf, size_t *outlen,
1166 48095039 2018-09-09 stsp struct got_delta_chain *deltas, struct got_pack *pack)
1168 e0ab43e7 2018-03-16 stsp const struct got_error *err = NULL;
1169 e0ab43e7 2018-03-16 stsp struct got_delta *delta;
1170 e0ab43e7 2018-03-16 stsp uint8_t *base_buf = NULL, *accum_buf = NULL;
1171 34fca9c3 2018-11-11 stsp size_t base_bufsz = 0, accum_size = 0;
1172 e0ab43e7 2018-03-16 stsp uint64_t max_size;
1173 e0ab43e7 2018-03-16 stsp int n = 0;
1175 e0ab43e7 2018-03-16 stsp *outbuf = NULL;
1176 e0ab43e7 2018-03-16 stsp *outlen = 0;
1178 e0ab43e7 2018-03-16 stsp if (SIMPLEQ_EMPTY(&deltas->entries))
1179 e0ab43e7 2018-03-16 stsp return got_error(GOT_ERR_BAD_DELTA_CHAIN);
1181 40426839 2018-03-17 stsp err = get_delta_chain_max_size(&max_size, deltas);
1183 e0ab43e7 2018-03-16 stsp return err;
1184 e0ab43e7 2018-03-16 stsp accum_buf = malloc(max_size);
1185 e0ab43e7 2018-03-16 stsp if (accum_buf == NULL)
1186 638f9024 2019-05-13 stsp return got_error_from_errno("malloc");
1188 e0ab43e7 2018-03-16 stsp /* Deltas are ordered in ascending order. */
1189 e0ab43e7 2018-03-16 stsp SIMPLEQ_FOREACH(delta, &deltas->entries, entry) {
1190 e0ab43e7 2018-03-16 stsp if (n == 0) {
1191 0c048b15 2018-04-27 stsp size_t delta_data_offset;
1193 e0ab43e7 2018-03-16 stsp /* Plain object types are the delta base. */
1194 e0ab43e7 2018-03-16 stsp if (delta->type != GOT_OBJ_TYPE_COMMIT &&
1195 e0ab43e7 2018-03-16 stsp delta->type != GOT_OBJ_TYPE_TREE &&
1196 e0ab43e7 2018-03-16 stsp delta->type != GOT_OBJ_TYPE_BLOB &&
1197 e0ab43e7 2018-03-16 stsp delta->type != GOT_OBJ_TYPE_TAG) {
1198 72eb3431 2018-04-01 stsp err = got_error(GOT_ERR_BAD_DELTA_CHAIN);
1199 72eb3431 2018-04-01 stsp goto done;
1202 0c048b15 2018-04-27 stsp delta_data_offset = delta->offset + delta->tslen;
1203 0c048b15 2018-04-27 stsp if (delta_data_offset >= pack->filesize) {
1204 0c048b15 2018-04-27 stsp err = got_error(GOT_ERR_PACK_OFFSET);
1205 0c048b15 2018-04-27 stsp goto done;
1207 d7464085 2018-07-09 stsp if (pack->map) {
1208 d7464085 2018-07-09 stsp size_t mapoff = (size_t)delta_data_offset;
1209 d7464085 2018-07-09 stsp err = got_inflate_to_mem_mmap(&base_buf,
1210 34fca9c3 2018-11-11 stsp &base_bufsz, pack->map, mapoff,
1211 d7464085 2018-07-09 stsp pack->filesize - mapoff);
1213 d7464085 2018-07-09 stsp if (lseek(pack->fd, delta_data_offset, SEEK_SET)
1215 638f9024 2019-05-13 stsp err = got_error_from_errno("lseek");
1216 d7464085 2018-07-09 stsp goto done;
1218 d7464085 2018-07-09 stsp err = got_inflate_to_mem_fd(&base_buf,
1219 34fca9c3 2018-11-11 stsp &base_bufsz, pack->fd);
1222 d7464085 2018-07-09 stsp goto done;
1227 34fca9c3 2018-11-11 stsp err = got_delta_apply_in_mem(base_buf, base_bufsz,
1228 34fca9c3 2018-11-11 stsp delta->delta_buf, delta->delta_len, accum_buf,
1229 34fca9c3 2018-11-11 stsp &accum_size, max_size);
1232 e0ab43e7 2018-03-16 stsp goto done;
1234 e0ab43e7 2018-03-16 stsp if (n < deltas->nentries) {
1235 e0ab43e7 2018-03-16 stsp /* Accumulated delta becomes the new base. */
1236 e0ab43e7 2018-03-16 stsp uint8_t *tmp = accum_buf;
1238 34fca9c3 2018-11-11 stsp * Base buffer switches roles with accumulation buffer.
1239 34fca9c3 2018-11-11 stsp * Ensure it can hold the largest result in the delta
1240 34fca9c3 2018-11-11 stsp * chain. Initial allocation might have been smaller.
1242 34fca9c3 2018-11-11 stsp if (base_bufsz < max_size) {
1243 34fca9c3 2018-11-11 stsp uint8_t *p;
1244 34fca9c3 2018-11-11 stsp p = reallocarray(base_buf, 1, max_size);
1245 34fca9c3 2018-11-11 stsp if (p == NULL) {
1246 638f9024 2019-05-13 stsp err = got_error_from_errno(
1247 230a42bd 2019-05-11 jcs "reallocarray");
1248 34fca9c3 2018-11-11 stsp goto done;
1250 34fca9c3 2018-11-11 stsp base_buf = p;
1251 34fca9c3 2018-11-11 stsp base_bufsz = max_size;
1253 e0ab43e7 2018-03-16 stsp accum_buf = base_buf;
1254 e0ab43e7 2018-03-16 stsp base_buf = tmp;
1259 e0ab43e7 2018-03-16 stsp free(base_buf);
1260 e0ab43e7 2018-03-16 stsp if (err) {
1261 e0ab43e7 2018-03-16 stsp free(accum_buf);
1262 e0ab43e7 2018-03-16 stsp *outbuf = NULL;
1263 e0ab43e7 2018-03-16 stsp *outlen = 0;
1265 e0ab43e7 2018-03-16 stsp *outbuf = accum_buf;
1266 e0ab43e7 2018-03-16 stsp *outlen = accum_size;
1268 efd2a263 2018-01-19 stsp return err;
1271 3ee5fc21 2018-01-17 stsp const struct got_error *
1272 24140570 2018-09-09 stsp got_packfile_extract_object(struct got_pack *pack, struct got_object *obj,
1273 3840f4c9 2018-09-12 stsp FILE *outfile, FILE *base_file, FILE *accum_file)
1275 3ee5fc21 2018-01-17 stsp const struct got_error *err = NULL;
1277 3ee5fc21 2018-01-17 stsp if ((obj->flags & GOT_OBJ_FLAG_PACKED) == 0)
1278 3ee5fc21 2018-01-17 stsp return got_error(GOT_ERR_OBJ_NOT_PACKED);
1280 ef2bccd9 2018-03-16 stsp if ((obj->flags & GOT_OBJ_FLAG_DELTIFIED) == 0) {
1281 24140570 2018-09-09 stsp if (obj->pack_offset >= pack->filesize)
1282 24140570 2018-09-09 stsp return got_error(GOT_ERR_PACK_OFFSET);
1284 d7464085 2018-07-09 stsp if (pack->map) {
1285 d7464085 2018-07-09 stsp size_t mapoff = (size_t)obj->pack_offset;
1286 d7464085 2018-07-09 stsp err = got_inflate_to_file_mmap(&obj->size, pack->map,
1287 24140570 2018-09-09 stsp mapoff, pack->filesize - mapoff, outfile);
1289 24140570 2018-09-09 stsp if (lseek(pack->fd, obj->pack_offset, SEEK_SET) == -1)
1290 638f9024 2019-05-13 stsp return got_error_from_errno("lseek");
1291 24140570 2018-09-09 stsp err = got_inflate_to_file_fd(&obj->size, pack->fd,
1295 2ce68b2f 2018-09-09 stsp err = dump_delta_chain_to_file(&obj->size, &obj->deltas, pack,
1296 3840f4c9 2018-09-12 stsp outfile, base_file, accum_file);
1298 a1fd68d8 2018-01-12 stsp return err;
1301 e0ab43e7 2018-03-16 stsp const struct got_error *
1302 e0ab43e7 2018-03-16 stsp got_packfile_extract_object_to_mem(uint8_t **buf, size_t *len,
1303 7e212e3d 2018-09-09 stsp struct got_object *obj, struct got_pack *pack)
1305 e0ab43e7 2018-03-16 stsp const struct got_error *err = NULL;
1307 e0ab43e7 2018-03-16 stsp if ((obj->flags & GOT_OBJ_FLAG_PACKED) == 0)
1308 e0ab43e7 2018-03-16 stsp return got_error(GOT_ERR_OBJ_NOT_PACKED);
1310 48095039 2018-09-09 stsp if ((obj->flags & GOT_OBJ_FLAG_DELTIFIED) == 0) {
1311 7e212e3d 2018-09-09 stsp if (obj->pack_offset >= pack->filesize)
1312 7e212e3d 2018-09-09 stsp return got_error(GOT_ERR_PACK_OFFSET);
1313 d7464085 2018-07-09 stsp if (pack->map) {
1314 d7464085 2018-07-09 stsp size_t mapoff = (size_t)obj->pack_offset;
1315 d7464085 2018-07-09 stsp err = got_inflate_to_mem_mmap(buf, len, pack->map,
1316 d7464085 2018-07-09 stsp mapoff, pack->filesize - mapoff);
1318 7e212e3d 2018-09-09 stsp if (lseek(pack->fd, obj->pack_offset, SEEK_SET) == -1)
1319 638f9024 2019-05-13 stsp return got_error_from_errno("lseek");
1320 d7464085 2018-07-09 stsp err = got_inflate_to_mem_fd(buf, len, pack->fd);
1323 48095039 2018-09-09 stsp err = dump_delta_chain_to_mem(buf, len, &obj->deltas, pack);
1325 e0ab43e7 2018-03-16 stsp return err;