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;
79 0ebaf008 2018-01-10 stsp SHA1Init(&ctx);
81 57b35b75 2018-06-22 stsp h = &p->hdr;
83 57b35b75 2018-06-22 stsp remain = p->len;
85 57b35b75 2018-06-22 stsp if (remain < sizeof(*h->magic)) {
86 0a0a3048 2018-01-10 stsp err = got_error(GOT_ERR_BAD_PACKIDX);
90 fc79a48d 2018-07-09 stsp h->magic = (uint32_t *)(p->map + offset);
92 fc79a48d 2018-07-09 stsp h->magic = malloc(sizeof(*h->magic));
93 fc79a48d 2018-07-09 stsp if (h->magic == NULL) {
94 638f9024 2019-05-13 stsp err = got_error_from_errno("malloc");
97 fc79a48d 2018-07-09 stsp n = read(p->fd, h->magic, sizeof(*h->magic));
98 b1317e77 2019-09-22 stsp if (n < 0) {
99 638f9024 2019-05-13 stsp err = got_error_from_errno("read");
101 b1317e77 2019-09-22 stsp } else if (n != sizeof(*h->magic)) {
102 fc79a48d 2018-07-09 stsp err = got_error(GOT_ERR_BAD_PACKIDX);
106 57b35b75 2018-06-22 stsp if (betoh32(*h->magic) != GOT_PACKIDX_V2_MAGIC) {
107 57b35b75 2018-06-22 stsp err = got_error(GOT_ERR_BAD_PACKIDX);
110 57b35b75 2018-06-22 stsp offset += sizeof(*h->magic);
111 57b35b75 2018-06-22 stsp remain -= sizeof(*h->magic);
113 0cb74cf4 2018-07-08 stsp if (verify)
114 0cb74cf4 2018-07-08 stsp SHA1Update(&ctx, (uint8_t *)h->magic, sizeof(*h->magic));
116 57b35b75 2018-06-22 stsp if (remain < sizeof(*h->version)) {
117 57b35b75 2018-06-22 stsp err = got_error(GOT_ERR_BAD_PACKIDX);
120 fc79a48d 2018-07-09 stsp if (p->map)
121 fc79a48d 2018-07-09 stsp h->version = (uint32_t *)(p->map + offset);
123 fc79a48d 2018-07-09 stsp h->version = malloc(sizeof(*h->version));
124 fc79a48d 2018-07-09 stsp if (h->version == NULL) {
125 638f9024 2019-05-13 stsp err = got_error_from_errno("malloc");
128 fc79a48d 2018-07-09 stsp n = read(p->fd, h->version, sizeof(*h->version));
130 638f9024 2019-05-13 stsp err = got_error_from_errno("read");
131 faaa1c0f 2018-09-15 stsp else if (n != sizeof(*h->version)) {
132 fc79a48d 2018-07-09 stsp err = got_error(GOT_ERR_BAD_PACKIDX);
136 57b35b75 2018-06-22 stsp if (betoh32(*h->version) != GOT_PACKIDX_VERSION) {
137 0a0a3048 2018-01-10 stsp err = got_error(GOT_ERR_BAD_PACKIDX);
140 57b35b75 2018-06-22 stsp offset += sizeof(*h->version);
141 57b35b75 2018-06-22 stsp remain -= sizeof(*h->version);
143 0cb74cf4 2018-07-08 stsp if (verify)
144 0cb74cf4 2018-07-08 stsp SHA1Update(&ctx, (uint8_t *)h->version, sizeof(*h->version));
146 57b35b75 2018-06-22 stsp len_fanout =
147 57b35b75 2018-06-22 stsp sizeof(*h->fanout_table) * GOT_PACKIDX_V2_FANOUT_TABLE_ITEMS;
148 57b35b75 2018-06-22 stsp if (remain < len_fanout) {
149 57b35b75 2018-06-22 stsp err = got_error(GOT_ERR_BAD_PACKIDX);
152 fc79a48d 2018-07-09 stsp if (p->map)
153 fc79a48d 2018-07-09 stsp h->fanout_table = (uint32_t *)(p->map + offset);
155 fc79a48d 2018-07-09 stsp h->fanout_table = malloc(len_fanout);
156 fc79a48d 2018-07-09 stsp if (h->fanout_table == NULL) {
157 638f9024 2019-05-13 stsp err = got_error_from_errno("malloc");
160 fc79a48d 2018-07-09 stsp n = read(p->fd, h->fanout_table, len_fanout);
162 638f9024 2019-05-13 stsp err = got_error_from_errno("read");
163 faaa1c0f 2018-09-15 stsp else if (n != len_fanout) {
164 fc79a48d 2018-07-09 stsp err = got_error(GOT_ERR_BAD_PACKIDX);
168 c8262310 2018-06-04 stsp err = verify_fanout_table(h->fanout_table);
171 0cb74cf4 2018-07-08 stsp if (verify)
172 0cb74cf4 2018-07-08 stsp SHA1Update(&ctx, (uint8_t *)h->fanout_table, len_fanout);
173 57b35b75 2018-06-22 stsp offset += len_fanout;
174 57b35b75 2018-06-22 stsp remain -= len_fanout;
176 c8262310 2018-06-04 stsp nobj = betoh32(h->fanout_table[0xff]);
177 57b35b75 2018-06-22 stsp len_ids = nobj * sizeof(*h->sorted_ids);
178 57b35b75 2018-06-22 stsp if (len_ids <= nobj || len_ids > remain) {
179 57b35b75 2018-06-22 stsp err = got_error(GOT_ERR_BAD_PACKIDX);
182 fc79a48d 2018-07-09 stsp if (p->map)
183 fc79a48d 2018-07-09 stsp h->sorted_ids =
184 fc79a48d 2018-07-09 stsp (struct got_packidx_object_id *)((uint8_t*)(p->map + offset));
186 fc79a48d 2018-07-09 stsp h->sorted_ids = malloc(len_ids);
187 fc79a48d 2018-07-09 stsp if (h->sorted_ids == NULL) {
188 fc79a48d 2018-07-09 stsp err = got_error(GOT_ERR_BAD_PACKIDX);
191 fc79a48d 2018-07-09 stsp n = read(p->fd, h->sorted_ids, len_ids);
193 638f9024 2019-05-13 stsp err = got_error_from_errno("read");
194 faaa1c0f 2018-09-15 stsp else if (n != len_ids) {
195 fc79a48d 2018-07-09 stsp err = got_error(GOT_ERR_BAD_PACKIDX);
199 0cb74cf4 2018-07-08 stsp if (verify)
200 0cb74cf4 2018-07-08 stsp SHA1Update(&ctx, (uint8_t *)h->sorted_ids, len_ids);
201 57b35b75 2018-06-22 stsp offset += len_ids;
202 57b35b75 2018-06-22 stsp remain -= len_ids;
204 57b35b75 2018-06-22 stsp if (remain < nobj * sizeof(*h->crc32)) {
205 57b35b75 2018-06-22 stsp err = got_error(GOT_ERR_BAD_PACKIDX);
208 fc79a48d 2018-07-09 stsp if (p->map)
209 fc79a48d 2018-07-09 stsp h->crc32 = (uint32_t *)((uint8_t*)(p->map + offset));
211 fc79a48d 2018-07-09 stsp h->crc32 = malloc(nobj * sizeof(*h->crc32));
212 fc79a48d 2018-07-09 stsp if (h->crc32 == NULL) {
213 638f9024 2019-05-13 stsp err = got_error_from_errno("malloc");
216 fc79a48d 2018-07-09 stsp n = read(p->fd, h->crc32, nobj * sizeof(*h->crc32));
218 638f9024 2019-05-13 stsp err = got_error_from_errno("read");
219 faaa1c0f 2018-09-15 stsp else if (n != nobj * sizeof(*h->crc32)) {
220 fc79a48d 2018-07-09 stsp err = got_error(GOT_ERR_BAD_PACKIDX);
224 0cb74cf4 2018-07-08 stsp if (verify)
225 0cb74cf4 2018-07-08 stsp SHA1Update(&ctx, (uint8_t *)h->crc32, nobj * sizeof(*h->crc32));
226 57b35b75 2018-06-22 stsp remain -= nobj * sizeof(*h->crc32);
227 57b35b75 2018-06-22 stsp offset += nobj * sizeof(*h->crc32);
229 57b35b75 2018-06-22 stsp if (remain < nobj * sizeof(*h->offsets)) {
230 57b35b75 2018-06-22 stsp err = got_error(GOT_ERR_BAD_PACKIDX);
233 fc79a48d 2018-07-09 stsp if (p->map)
234 fc79a48d 2018-07-09 stsp h->offsets = (uint32_t *)((uint8_t*)(p->map + offset));
236 fc79a48d 2018-07-09 stsp h->offsets = malloc(nobj * sizeof(*h->offsets));
237 fc79a48d 2018-07-09 stsp if (h->offsets == NULL) {
238 638f9024 2019-05-13 stsp err = got_error_from_errno("malloc");
241 fc79a48d 2018-07-09 stsp n = read(p->fd, h->offsets, nobj * sizeof(*h->offsets));
243 638f9024 2019-05-13 stsp err = got_error_from_errno("read");
244 faaa1c0f 2018-09-15 stsp else if (n != nobj * sizeof(*h->offsets)) {
245 fc79a48d 2018-07-09 stsp err = got_error(GOT_ERR_BAD_PACKIDX);
249 0cb74cf4 2018-07-08 stsp if (verify)
250 0cb74cf4 2018-07-08 stsp SHA1Update(&ctx, (uint8_t *)h->offsets,
251 0cb74cf4 2018-07-08 stsp nobj * sizeof(*h->offsets));
252 57b35b75 2018-06-22 stsp remain -= nobj * sizeof(*h->offsets);
253 57b35b75 2018-06-22 stsp offset += nobj * sizeof(*h->offsets);
255 0a0a3048 2018-01-10 stsp /* Large file offsets are contained only in files > 2GB. */
256 57b35b75 2018-06-22 stsp if (p->len <= 0x80000000)
257 0a0a3048 2018-01-10 stsp goto checksum;
259 57b35b75 2018-06-22 stsp if (remain < nobj * sizeof(*h->large_offsets)) {
260 57b35b75 2018-06-22 stsp err = got_error(GOT_ERR_BAD_PACKIDX);
263 fc79a48d 2018-07-09 stsp if (p->map)
264 fc79a48d 2018-07-09 stsp h->large_offsets = (uint64_t *)((uint8_t*)(p->map + offset));
266 de30857e 2019-08-23 stsp h->large_offsets = malloc(nobj * sizeof(*h->large_offsets));
267 de30857e 2019-08-23 stsp if (h->large_offsets == NULL) {
268 638f9024 2019-05-13 stsp err = got_error_from_errno("malloc");
271 fc79a48d 2018-07-09 stsp n = read(p->fd, h->large_offsets,
272 fc79a48d 2018-07-09 stsp nobj * sizeof(*h->large_offsets));
274 638f9024 2019-05-13 stsp err = got_error_from_errno("read");
275 faaa1c0f 2018-09-15 stsp else if (n != nobj * sizeof(*h->large_offsets)) {
276 fc79a48d 2018-07-09 stsp err = got_error(GOT_ERR_BAD_PACKIDX);
280 0cb74cf4 2018-07-08 stsp if (verify)
281 0cb74cf4 2018-07-08 stsp SHA1Update(&ctx, (uint8_t*)h->large_offsets,
282 0cb74cf4 2018-07-08 stsp nobj * sizeof(*h->large_offsets));
283 57b35b75 2018-06-22 stsp remain -= nobj * sizeof(*h->large_offsets);
284 57b35b75 2018-06-22 stsp offset += nobj * sizeof(*h->large_offsets);
287 57b35b75 2018-06-22 stsp if (remain < sizeof(*h->trailer)) {
288 57b35b75 2018-06-22 stsp err = got_error(GOT_ERR_BAD_PACKIDX);
291 fc79a48d 2018-07-09 stsp if (p->map)
292 fc79a48d 2018-07-09 stsp h->trailer =
293 fc79a48d 2018-07-09 stsp (struct got_packidx_trailer *)((uint8_t*)(p->map + offset));
295 fc79a48d 2018-07-09 stsp h->trailer = malloc(sizeof(*h->trailer));
296 fc79a48d 2018-07-09 stsp if (h->trailer == NULL) {
297 638f9024 2019-05-13 stsp err = got_error_from_errno("malloc");
300 fc79a48d 2018-07-09 stsp n = read(p->fd, h->trailer, sizeof(*h->trailer));
302 638f9024 2019-05-13 stsp err = got_error_from_errno("read");
303 faaa1c0f 2018-09-15 stsp else if (n != sizeof(*h->trailer)) {
304 fc79a48d 2018-07-09 stsp err = got_error(GOT_ERR_BAD_PACKIDX);
308 0cb74cf4 2018-07-08 stsp if (verify) {
309 0cb74cf4 2018-07-08 stsp SHA1Update(&ctx, h->trailer->packfile_sha1, SHA1_DIGEST_LENGTH);
310 0cb74cf4 2018-07-08 stsp SHA1Final(sha1, &ctx);
311 0cb74cf4 2018-07-08 stsp if (memcmp(h->trailer->packidx_sha1, sha1,
312 0cb74cf4 2018-07-08 stsp SHA1_DIGEST_LENGTH) != 0)
313 0cb74cf4 2018-07-08 stsp err = got_error(GOT_ERR_PACKIDX_CSUM);
316 817c5a18 2018-09-09 stsp return err;
319 817c5a18 2018-09-09 stsp const struct got_error *
320 817c5a18 2018-09-09 stsp got_packidx_open(struct got_packidx **packidx, const char *path, int verify)
322 817c5a18 2018-09-09 stsp const struct got_error *err = NULL;
323 817c5a18 2018-09-09 stsp struct got_packidx *p;
324 57377f07 2019-05-23 stsp struct stat sb;
326 817c5a18 2018-09-09 stsp *packidx = NULL;
328 817c5a18 2018-09-09 stsp p = calloc(1, sizeof(*p));
329 817c5a18 2018-09-09 stsp if (p == NULL)
330 638f9024 2019-05-13 stsp return got_error_from_errno("calloc");
332 a5b57ccf 2019-04-11 stsp p->fd = open(path, O_RDONLY | O_NOFOLLOW);
333 6772cf22 2019-08-28 hiltjo if (p->fd == -1) {
334 6772cf22 2019-08-28 hiltjo err = got_error_from_errno2("open", path);
336 6772cf22 2019-08-28 hiltjo return err;
339 57377f07 2019-05-23 stsp if (fstat(p->fd, &sb) != 0) {
340 57377f07 2019-05-23 stsp err = got_error_from_errno2("fstat", path);
341 817c5a18 2018-09-09 stsp close(p->fd);
343 817c5a18 2018-09-09 stsp return err;
345 57377f07 2019-05-23 stsp p->len = sb.st_size;
346 817c5a18 2018-09-09 stsp if (p->len < sizeof(p->hdr)) {
347 817c5a18 2018-09-09 stsp err = got_error(GOT_ERR_BAD_PACKIDX);
348 817c5a18 2018-09-09 stsp close(p->fd);
350 817c5a18 2018-09-09 stsp return err;
353 817c5a18 2018-09-09 stsp p->path_packidx = strdup(path);
354 817c5a18 2018-09-09 stsp if (p->path_packidx == NULL) {
355 638f9024 2019-05-13 stsp err = got_error_from_errno("strdup");
359 817c5a18 2018-09-09 stsp #ifndef GOT_PACK_NO_MMAP
360 817c5a18 2018-09-09 stsp p->map = mmap(NULL, p->len, PROT_READ, MAP_PRIVATE, p->fd, 0);
361 3a11398b 2019-02-21 stsp if (p->map == MAP_FAILED) {
362 3a11398b 2019-02-21 stsp if (errno != ENOMEM) {
363 638f9024 2019-05-13 stsp err = got_error_from_errno("mmap");
366 817c5a18 2018-09-09 stsp p->map = NULL; /* fall back to read(2) */
370 817c5a18 2018-09-09 stsp err = got_packidx_init_hdr(p, verify);
373 0a0a3048 2018-01-10 stsp got_packidx_close(p);
375 0a0a3048 2018-01-10 stsp *packidx = p;
377 0a0a3048 2018-01-10 stsp return err;
380 57b35b75 2018-06-22 stsp const struct got_error *
381 6fd11751 2018-06-04 stsp got_packidx_close(struct got_packidx *packidx)
383 57b35b75 2018-06-22 stsp const struct got_error *err = NULL;
385 6fd11751 2018-06-04 stsp free(packidx->path_packidx);
386 fc79a48d 2018-07-09 stsp if (packidx->map) {
387 57b35b75 2018-06-22 stsp if (munmap(packidx->map, packidx->len) == -1)
388 638f9024 2019-05-13 stsp err = got_error_from_errno("munmap");
390 fc79a48d 2018-07-09 stsp free(packidx->hdr.magic);
391 fc79a48d 2018-07-09 stsp free(packidx->hdr.version);
392 fc79a48d 2018-07-09 stsp free(packidx->hdr.fanout_table);
393 fc79a48d 2018-07-09 stsp free(packidx->hdr.sorted_ids);
394 fc79a48d 2018-07-09 stsp free(packidx->hdr.crc32);
395 fc79a48d 2018-07-09 stsp free(packidx->hdr.offsets);
396 fc79a48d 2018-07-09 stsp free(packidx->hdr.large_offsets);
397 fc79a48d 2018-07-09 stsp free(packidx->hdr.trailer);
399 3a6ce05a 2019-02-11 stsp if (close(packidx->fd) != 0 && err == NULL)
400 638f9024 2019-05-13 stsp err = got_error_from_errno("close");
401 0a0a3048 2018-01-10 stsp free(packidx);
403 57b35b75 2018-06-22 stsp return err;
406 a1fd68d8 2018-01-12 stsp static off_t
407 6fd11751 2018-06-04 stsp get_object_offset(struct got_packidx *packidx, int idx)
409 6fd11751 2018-06-04 stsp uint32_t totobj = betoh32(packidx->hdr.fanout_table[0xff]);
410 6fd11751 2018-06-04 stsp uint32_t offset = betoh32(packidx->hdr.offsets[idx]);
411 a1fd68d8 2018-01-12 stsp if (offset & GOT_PACKIDX_OFFSET_VAL_IS_LARGE_IDX) {
412 a1fd68d8 2018-01-12 stsp uint64_t loffset;
413 a1fd68d8 2018-01-12 stsp idx = offset & GOT_PACKIDX_OFFSET_VAL_MASK;
414 6fd11751 2018-06-04 stsp if (idx < 0 || idx > totobj ||
415 6fd11751 2018-06-04 stsp packidx->hdr.large_offsets == NULL)
417 6fd11751 2018-06-04 stsp loffset = betoh64(packidx->hdr.large_offsets[idx]);
418 a1fd68d8 2018-01-12 stsp return (loffset > INT64_MAX ? -1 : (off_t)loffset);
420 a1fd68d8 2018-01-12 stsp return (off_t)(offset & GOT_PACKIDX_OFFSET_VAL_MASK);
424 1510f469 2018-09-09 stsp got_packidx_get_object_idx(struct got_packidx *packidx, struct got_object_id *id)
426 a1fd68d8 2018-01-12 stsp u_int8_t id0 = id->sha1[0];
427 6fd11751 2018-06-04 stsp uint32_t totobj = betoh32(packidx->hdr.fanout_table[0xff]);
428 40aeb19c 2018-06-22 stsp int left = 0, right = totobj - 1;
430 a1fd68d8 2018-01-12 stsp if (id0 > 0)
431 40aeb19c 2018-06-22 stsp left = betoh32(packidx->hdr.fanout_table[id0 - 1]);
433 40aeb19c 2018-06-22 stsp while (left <= right) {
434 57b35b75 2018-06-22 stsp struct got_packidx_object_id *oid;
435 40aeb19c 2018-06-22 stsp int i, cmp;
437 40aeb19c 2018-06-22 stsp i = ((left + right) / 2);
438 40aeb19c 2018-06-22 stsp oid = &packidx->hdr.sorted_ids[i];
439 57b35b75 2018-06-22 stsp cmp = memcmp(id->sha1, oid->sha1, SHA1_DIGEST_LENGTH);
440 16dcbf91 2018-04-01 stsp if (cmp == 0)
442 40aeb19c 2018-06-22 stsp else if (cmp > 0)
443 40aeb19c 2018-06-22 stsp left = i + 1;
444 40aeb19c 2018-06-22 stsp else if (cmp < 0)
445 40aeb19c 2018-06-22 stsp right = i - 1;
451 876c234b 2018-09-10 stsp const struct got_error *
452 dd88155e 2019-06-29 stsp got_packidx_match_id_str_prefix(struct got_object_id_queue *matched_ids,
453 4277420a 2019-06-29 stsp struct got_packidx *packidx, const char *id_str_prefix)
455 dd88155e 2019-06-29 stsp const struct got_error *err = NULL;
456 4277420a 2019-06-29 stsp u_int8_t id0;
457 4277420a 2019-06-29 stsp uint32_t totobj = betoh32(packidx->hdr.fanout_table[0xff]);
458 4277420a 2019-06-29 stsp char hex[3];
459 4277420a 2019-06-29 stsp size_t prefix_len = strlen(id_str_prefix);
460 e09a504c 2019-06-28 stsp struct got_packidx_object_id *oid;
463 dd88155e 2019-06-29 stsp SIMPLEQ_INIT(matched_ids);
465 4277420a 2019-06-29 stsp if (prefix_len < 2)
466 4277420a 2019-06-29 stsp return got_error(GOT_ERR_BAD_OBJ_ID_STR);
468 4277420a 2019-06-29 stsp hex[0] = id_str_prefix[0];
469 4277420a 2019-06-29 stsp hex[1] = id_str_prefix[1];
470 4277420a 2019-06-29 stsp hex[2] = '\0';
471 4277420a 2019-06-29 stsp if (!got_parse_xdigit(&id0, hex))
472 4277420a 2019-06-29 stsp return got_error(GOT_ERR_BAD_OBJ_ID_STR);
474 4277420a 2019-06-29 stsp i = betoh32(packidx->hdr.fanout_table[id0 - 1]);
475 4277420a 2019-06-29 stsp if (i == 0)
476 4277420a 2019-06-29 stsp return NULL;
478 4277420a 2019-06-29 stsp oid = &packidx->hdr.sorted_ids[i];
479 4277420a 2019-06-29 stsp while (i < totobj && oid->sha1[0] == id0) {
480 4277420a 2019-06-29 stsp char id_str[SHA1_DIGEST_STRING_LENGTH];
481 dd88155e 2019-06-29 stsp struct got_object_qid *qid;
484 4277420a 2019-06-29 stsp if (!got_sha1_digest_to_str(oid->sha1, id_str, sizeof(id_str)))
485 4277420a 2019-06-29 stsp return got_error(GOT_ERR_NO_SPACE);
487 4277420a 2019-06-29 stsp cmp = strncmp(id_str, id_str_prefix, prefix_len);
488 4277420a 2019-06-29 stsp if (cmp < 0) {
489 4277420a 2019-06-29 stsp oid = &packidx->hdr.sorted_ids[++i];
491 4277420a 2019-06-29 stsp } else if (cmp > 0)
494 dd88155e 2019-06-29 stsp err = got_object_qid_alloc_partial(&qid);
497 dd88155e 2019-06-29 stsp memcpy(qid->id->sha1, oid->sha1, SHA1_DIGEST_LENGTH);
498 dd88155e 2019-06-29 stsp SIMPLEQ_INSERT_TAIL(matched_ids, qid, entry);
500 4277420a 2019-06-29 stsp oid = &packidx->hdr.sorted_ids[++i];
504 0adc7bcc 2019-06-29 stsp got_object_id_queue_free(matched_ids);
505 dd88155e 2019-06-29 stsp return err;
508 e09a504c 2019-06-28 stsp const struct got_error *
509 876c234b 2018-09-10 stsp got_pack_stop_privsep_child(struct got_pack *pack)
511 96732e0b 2018-11-11 stsp const struct got_error *err = NULL;
513 876c234b 2018-09-10 stsp if (pack->privsep_child == NULL)
514 876c234b 2018-09-10 stsp return NULL;
516 876c234b 2018-09-10 stsp err = got_privsep_send_stop(pack->privsep_child->imsg_fd);
518 96732e0b 2018-11-11 stsp return err;
519 96732e0b 2018-11-11 stsp err = got_privsep_wait_for_child(pack->privsep_child->pid);
520 0dd5271b 2019-05-10 stsp if (close(pack->privsep_child->imsg_fd) != 0 && err == NULL)
521 638f9024 2019-05-13 stsp err = got_error_from_errno("close");
522 876c234b 2018-09-10 stsp free(pack->privsep_child);
523 876c234b 2018-09-10 stsp pack->privsep_child = NULL;
524 876c234b 2018-09-10 stsp return err;
527 d7464085 2018-07-09 stsp const struct got_error *
528 7e656b93 2018-03-17 stsp got_pack_close(struct got_pack *pack)
530 d7464085 2018-07-09 stsp const struct got_error *err = NULL;
532 876c234b 2018-09-10 stsp err = got_pack_stop_privsep_child(pack);
533 876c234b 2018-09-10 stsp if (pack->map && munmap(pack->map, pack->filesize) == -1 && !err)
534 638f9024 2019-05-13 stsp err = got_error_from_errno("munmap");
535 3a6ce05a 2019-02-11 stsp if (pack->fd != -1 && close(pack->fd) != 0 && err == NULL)
536 638f9024 2019-05-13 stsp err = got_error_from_errno("close");
537 8b2180d4 2018-04-26 stsp pack->fd = -1;
538 4589e373 2018-03-17 stsp free(pack->path_packfile);
539 4589e373 2018-03-17 stsp pack->path_packfile = NULL;
540 4589e373 2018-03-17 stsp pack->filesize = 0;
542 c7fe698a 2018-01-23 stsp return err;
545 c7fe698a 2018-01-23 stsp static const struct got_error *
546 d7464085 2018-07-09 stsp parse_object_type_and_size(uint8_t *type, uint64_t *size, size_t *len,
547 d7464085 2018-07-09 stsp struct got_pack *pack, off_t offset)
549 a487c1d0 2018-01-14 stsp uint8_t t = 0;
550 a487c1d0 2018-01-14 stsp uint64_t s = 0;
551 a487c1d0 2018-01-14 stsp uint8_t sizeN;
552 d7464085 2018-07-09 stsp size_t mapoff = 0;
557 d7464085 2018-07-09 stsp if (offset >= pack->filesize)
558 d7464085 2018-07-09 stsp return got_error(GOT_ERR_PACK_OFFSET);
560 d7464085 2018-07-09 stsp if (pack->map) {
561 d7464085 2018-07-09 stsp mapoff = (size_t)offset;
563 d7464085 2018-07-09 stsp if (lseek(pack->fd, offset, SEEK_SET) == -1)
564 638f9024 2019-05-13 stsp return got_error_from_errno("lseek");
568 a1fd68d8 2018-01-12 stsp /* We do not support size values which don't fit in 64 bit. */
570 a487c1d0 2018-01-14 stsp return got_error(GOT_ERR_NO_SPACE);
572 d7464085 2018-07-09 stsp if (pack->map) {
573 d7464085 2018-07-09 stsp sizeN = *(pack->map + mapoff);
574 d7464085 2018-07-09 stsp mapoff += sizeof(sizeN);
576 d7464085 2018-07-09 stsp ssize_t n = read(pack->fd, &sizeN, sizeof(sizeN));
578 638f9024 2019-05-13 stsp return got_error_from_errno("read");
579 d7464085 2018-07-09 stsp if (n != sizeof(sizeN))
580 d7464085 2018-07-09 stsp return got_error(GOT_ERR_BAD_PACKFILE);
582 d7464085 2018-07-09 stsp *len += sizeof(sizeN);
584 a1fd68d8 2018-01-12 stsp if (i == 0) {
585 a487c1d0 2018-01-14 stsp t = (sizeN & GOT_PACK_OBJ_SIZE0_TYPE_MASK) >>
586 a1fd68d8 2018-01-12 stsp GOT_PACK_OBJ_SIZE0_TYPE_MASK_SHIFT;
587 a487c1d0 2018-01-14 stsp s = (sizeN & GOT_PACK_OBJ_SIZE0_VAL_MASK);
589 a1fd68d8 2018-01-12 stsp size_t shift = 4 + 7 * (i - 1);
590 a487c1d0 2018-01-14 stsp s |= ((sizeN & GOT_PACK_OBJ_SIZE_VAL_MASK) << shift);
593 a1fd68d8 2018-01-12 stsp } while (sizeN & GOT_PACK_OBJ_SIZE_MORE);
597 a487c1d0 2018-01-14 stsp return NULL;
600 a1fd68d8 2018-01-12 stsp static const struct got_error *
601 9710aac2 2018-01-19 stsp open_plain_object(struct got_object **obj, const char *path_packfile,
602 c59b3346 2018-09-11 stsp struct got_object_id *id, uint8_t type, off_t offset, size_t size, int idx)
604 6ccb713b 2018-01-19 stsp *obj = calloc(1, sizeof(**obj));
605 6ccb713b 2018-01-19 stsp if (*obj == NULL)
606 638f9024 2019-05-13 stsp return got_error_from_errno("calloc");
608 6ccb713b 2018-01-19 stsp (*obj)->path_packfile = strdup(path_packfile);
609 6ccb713b 2018-01-19 stsp if ((*obj)->path_packfile == NULL) {
610 638f9024 2019-05-13 stsp const struct got_error *err = got_error_from_errno("strdup");
611 6ccb713b 2018-01-19 stsp free(*obj);
612 6ccb713b 2018-01-19 stsp *obj = NULL;
613 0a585a0d 2018-03-17 stsp return err;
616 6ccb713b 2018-01-19 stsp (*obj)->type = type;
617 6ccb713b 2018-01-19 stsp (*obj)->flags = GOT_OBJ_FLAG_PACKED;
618 c59b3346 2018-09-11 stsp (*obj)->pack_idx = idx;
619 6ccb713b 2018-01-19 stsp (*obj)->hdrlen = 0;
620 6ccb713b 2018-01-19 stsp (*obj)->size = size;
621 106807b4 2018-09-15 stsp memcpy(&(*obj)->id, id, sizeof((*obj)->id));
622 6ccb713b 2018-01-19 stsp (*obj)->pack_offset = offset;
624 b107e67f 2018-01-19 stsp return NULL;
627 b107e67f 2018-01-19 stsp static const struct got_error *
628 d7464085 2018-07-09 stsp parse_negative_offset(int64_t *offset, size_t *len, struct got_pack *pack,
629 d7464085 2018-07-09 stsp off_t delta_offset)
631 b107e67f 2018-01-19 stsp int64_t o = 0;
632 b107e67f 2018-01-19 stsp uint8_t offN;
635 a0de39f3 2019-08-09 stsp *offset = 0;
639 b107e67f 2018-01-19 stsp /* We do not support offset values which don't fit in 64 bit. */
641 b107e67f 2018-01-19 stsp return got_error(GOT_ERR_NO_SPACE);
643 d7464085 2018-07-09 stsp if (pack->map) {
644 d7464085 2018-07-09 stsp size_t mapoff;
645 d7464085 2018-07-09 stsp if (delta_offset >= pack->filesize)
646 d7464085 2018-07-09 stsp return got_error(GOT_ERR_PACK_OFFSET);
647 d7464085 2018-07-09 stsp mapoff = (size_t)delta_offset + *len;
648 d7464085 2018-07-09 stsp offN = *(pack->map + mapoff);
651 d7464085 2018-07-09 stsp n = read(pack->fd, &offN, sizeof(offN));
653 638f9024 2019-05-13 stsp return got_error_from_errno("read");
654 d7464085 2018-07-09 stsp if (n != sizeof(offN))
655 d7464085 2018-07-09 stsp return got_error(GOT_ERR_BAD_PACKFILE);
657 d7464085 2018-07-09 stsp *len += sizeof(offN);
659 b107e67f 2018-01-19 stsp if (i == 0)
660 b107e67f 2018-01-19 stsp o = (offN & GOT_PACK_OBJ_DELTA_OFF_VAL_MASK);
664 cecc778e 2018-01-23 stsp o += (offN & GOT_PACK_OBJ_DELTA_OFF_VAL_MASK);
667 b107e67f 2018-01-19 stsp } while (offN & GOT_PACK_OBJ_DELTA_OFF_MORE);
669 b107e67f 2018-01-19 stsp *offset = o;
670 6ccb713b 2018-01-19 stsp return NULL;
673 6ccb713b 2018-01-19 stsp static const struct got_error *
674 d7464085 2018-07-09 stsp parse_offset_delta(off_t *base_offset, size_t *len, struct got_pack *pack,
675 d7464085 2018-07-09 stsp off_t offset, int tslen)
677 96f5e8b3 2018-01-23 stsp const struct got_error *err;
678 b107e67f 2018-01-19 stsp int64_t negoffset;
679 b107e67f 2018-01-19 stsp size_t negofflen;
683 d7464085 2018-07-09 stsp err = parse_negative_offset(&negoffset, &negofflen, pack,
684 d7464085 2018-07-09 stsp offset + tslen);
686 b107e67f 2018-01-19 stsp return err;
688 b107e67f 2018-01-19 stsp /* Compute the base object's offset (must be in the same pack file). */
689 96f5e8b3 2018-01-23 stsp *base_offset = (offset - negoffset);
690 96f5e8b3 2018-01-23 stsp if (*base_offset <= 0)
691 b107e67f 2018-01-19 stsp return got_error(GOT_ERR_BAD_PACKFILE);
693 d7464085 2018-07-09 stsp *len = negofflen;
694 96f5e8b3 2018-01-23 stsp return NULL;
697 0e22967e 2018-02-11 stsp static const struct got_error *
698 c8ecd499 2018-09-09 stsp resolve_delta_chain(struct got_delta_chain *, struct got_packidx *,
699 c8ecd499 2018-09-09 stsp struct got_pack *, off_t, size_t, int, size_t, unsigned int);
701 96f5e8b3 2018-01-23 stsp static const struct got_error *
702 c336f889 2018-07-23 stsp add_delta(struct got_delta_chain *deltas, off_t delta_offset, size_t tslen,
703 c336f889 2018-07-23 stsp int delta_type, size_t delta_size, size_t delta_data_offset,
704 c336f889 2018-07-23 stsp uint8_t *delta_buf, size_t delta_len)
706 bdd2fbb3 2018-02-11 stsp struct got_delta *delta;
708 c336f889 2018-07-23 stsp delta = got_delta_open(delta_offset, tslen, delta_type, delta_size,
709 c336f889 2018-07-23 stsp delta_data_offset, delta_buf,
710 a53d2f13 2018-03-17 stsp delta_len);
711 bdd2fbb3 2018-02-11 stsp if (delta == NULL)
712 638f9024 2019-05-13 stsp return got_error_from_errno("got_delta_open");
713 bdd2fbb3 2018-02-11 stsp /* delta is freed in got_object_close() */
714 bdd2fbb3 2018-02-11 stsp deltas->nentries++;
715 bdd2fbb3 2018-02-11 stsp SIMPLEQ_INSERT_HEAD(&deltas->entries, delta, entry);
716 bdd2fbb3 2018-02-11 stsp return NULL;
719 bdd2fbb3 2018-02-11 stsp static const struct got_error *
720 6b9c9673 2018-01-23 stsp resolve_offset_delta(struct got_delta_chain *deltas,
721 c8ecd499 2018-09-09 stsp struct got_packidx *packidx, struct got_pack *pack, off_t delta_offset,
722 c8ecd499 2018-09-09 stsp size_t tslen, int delta_type, size_t delta_size, unsigned int recursion)
725 a3500804 2018-01-23 stsp const struct got_error *err;
726 c3703302 2018-01-23 stsp off_t base_offset;
727 c3703302 2018-01-23 stsp uint8_t base_type;
728 c3703302 2018-01-23 stsp uint64_t base_size;
729 c3703302 2018-01-23 stsp size_t base_tslen;
730 bdd2fbb3 2018-02-11 stsp off_t delta_data_offset;
731 a53d2f13 2018-03-17 stsp uint8_t *delta_buf;
732 d7464085 2018-07-09 stsp size_t delta_len, consumed;
734 d7464085 2018-07-09 stsp err = parse_offset_delta(&base_offset, &consumed, pack,
735 d7464085 2018-07-09 stsp delta_offset, tslen);
737 a3500804 2018-01-23 stsp return err;
739 d7464085 2018-07-09 stsp delta_data_offset = delta_offset + tslen + consumed;
740 d7464085 2018-07-09 stsp if (delta_data_offset >= pack->filesize)
741 d7464085 2018-07-09 stsp return got_error(GOT_ERR_PACK_OFFSET);
743 d7464085 2018-07-09 stsp if (pack->map == NULL) {
744 d7464085 2018-07-09 stsp delta_data_offset = lseek(pack->fd, 0, SEEK_CUR);
745 d7464085 2018-07-09 stsp if (delta_data_offset == -1)
746 638f9024 2019-05-13 stsp return got_error_from_errno("lseek");
749 d7464085 2018-07-09 stsp if (pack->map) {
750 d7464085 2018-07-09 stsp size_t mapoff = (size_t)delta_data_offset;
751 d7464085 2018-07-09 stsp err = got_inflate_to_mem_mmap(&delta_buf, &delta_len, pack->map,
752 d7464085 2018-07-09 stsp mapoff, pack->filesize - mapoff);
754 d7464085 2018-07-09 stsp return err;
757 d7464085 2018-07-09 stsp err = got_inflate_to_mem_fd(&delta_buf, &delta_len, pack->fd);
759 d7464085 2018-07-09 stsp return err;
762 c336f889 2018-07-23 stsp err = add_delta(deltas, delta_offset, tslen, delta_type, delta_size,
763 c336f889 2018-07-23 stsp delta_data_offset, delta_buf, delta_len);
765 1a35c1bc 2019-05-22 stsp return err;
767 c3703302 2018-01-23 stsp /* An offset delta must be in the same packfile. */
768 1a35c1bc 2019-05-22 stsp if (base_offset >= pack->filesize)
769 1a35c1bc 2019-05-22 stsp return got_error(GOT_ERR_PACK_OFFSET);
771 348f621c 2018-01-23 stsp err = parse_object_type_and_size(&base_type, &base_size, &base_tslen,
772 d7464085 2018-07-09 stsp pack, base_offset);
774 1a35c1bc 2019-05-22 stsp return err;
776 1a35c1bc 2019-05-22 stsp return resolve_delta_chain(deltas, packidx, pack, base_offset,
777 b0e2201a 2018-06-22 stsp base_tslen, base_type, base_size, recursion - 1);
780 c3703302 2018-01-23 stsp static const struct got_error *
781 c8ecd499 2018-09-09 stsp resolve_ref_delta(struct got_delta_chain *deltas, struct got_packidx *packidx,
782 c8ecd499 2018-09-09 stsp struct got_pack *pack, off_t delta_offset, size_t tslen, int delta_type,
783 c8ecd499 2018-09-09 stsp size_t delta_size, unsigned int recursion)
785 6b9c9673 2018-01-23 stsp const struct got_error *err;
786 6b9c9673 2018-01-23 stsp struct got_object_id id;
788 6b9c9673 2018-01-23 stsp off_t base_offset;
789 6b9c9673 2018-01-23 stsp uint8_t base_type;
790 6b9c9673 2018-01-23 stsp uint64_t base_size;
791 6b9c9673 2018-01-23 stsp size_t base_tslen;
792 bdd2fbb3 2018-02-11 stsp off_t delta_data_offset;
793 1a35c1bc 2019-05-22 stsp uint8_t *delta_buf;
794 a53d2f13 2018-03-17 stsp size_t delta_len;
796 d7464085 2018-07-09 stsp if (delta_offset >= pack->filesize)
797 d7464085 2018-07-09 stsp return got_error(GOT_ERR_PACK_OFFSET);
798 45202a8f 2018-07-11 stsp delta_data_offset = delta_offset + tslen;
799 d7464085 2018-07-09 stsp if (delta_data_offset >= pack->filesize)
800 d7464085 2018-07-09 stsp return got_error(GOT_ERR_PACK_OFFSET);
802 d7464085 2018-07-09 stsp if (pack->map == NULL) {
803 d7464085 2018-07-09 stsp delta_data_offset = lseek(pack->fd, 0, SEEK_CUR);
804 d7464085 2018-07-09 stsp if (delta_data_offset == -1)
805 638f9024 2019-05-13 stsp return got_error_from_errno("lseek");
808 d7464085 2018-07-09 stsp if (pack->map) {
809 45202a8f 2018-07-11 stsp size_t mapoff = (size_t)delta_data_offset;
810 d7464085 2018-07-09 stsp memcpy(&id, pack->map + mapoff, sizeof(id));
811 d7464085 2018-07-09 stsp mapoff += sizeof(id);
812 d7464085 2018-07-09 stsp err = got_inflate_to_mem_mmap(&delta_buf, &delta_len, pack->map,
813 45202a8f 2018-07-11 stsp mapoff, pack->filesize - mapoff);
815 1a35c1bc 2019-05-22 stsp return err;
817 d7464085 2018-07-09 stsp ssize_t n = read(pack->fd, &id, sizeof(id));
819 638f9024 2019-05-13 stsp return got_error_from_errno("read");
820 d7464085 2018-07-09 stsp if (n != sizeof(id))
821 d7464085 2018-07-09 stsp return got_error(GOT_ERR_BAD_PACKFILE);
822 d7464085 2018-07-09 stsp err = got_inflate_to_mem_fd(&delta_buf, &delta_len, pack->fd);
824 1a35c1bc 2019-05-22 stsp return err;
827 c336f889 2018-07-23 stsp err = add_delta(deltas, delta_offset, tslen, delta_type, delta_size,
828 c336f889 2018-07-23 stsp delta_data_offset, delta_buf, delta_len);
830 1a35c1bc 2019-05-22 stsp return err;
832 652b2703 2018-06-22 stsp /* Delta base must be in the same pack file. */
833 1510f469 2018-09-09 stsp idx = got_packidx_get_object_idx(packidx, &id);
834 1a35c1bc 2019-05-22 stsp if (idx == -1)
835 1a35c1bc 2019-05-22 stsp return got_error(GOT_ERR_BAD_PACKFILE);
837 6b9c9673 2018-01-23 stsp base_offset = get_object_offset(packidx, idx);
838 1a35c1bc 2019-05-22 stsp if (base_offset == (uint64_t)-1)
839 1a35c1bc 2019-05-22 stsp return got_error(GOT_ERR_BAD_PACKIDX);
841 1a35c1bc 2019-05-22 stsp if (base_offset >= pack->filesize)
842 1a35c1bc 2019-05-22 stsp return got_error(GOT_ERR_PACK_OFFSET);
844 6b9c9673 2018-01-23 stsp err = parse_object_type_and_size(&base_type, &base_size, &base_tslen,
845 d7464085 2018-07-09 stsp pack, base_offset);
847 1a35c1bc 2019-05-22 stsp return err;
849 1a35c1bc 2019-05-22 stsp return resolve_delta_chain(deltas, packidx, pack, base_offset,
850 0c048b15 2018-04-27 stsp base_tslen, base_type, base_size, recursion - 1);
853 6b9c9673 2018-01-23 stsp static const struct got_error *
854 c8ecd499 2018-09-09 stsp resolve_delta_chain(struct got_delta_chain *deltas, struct got_packidx *packidx,
855 c8ecd499 2018-09-09 stsp struct got_pack *pack, off_t delta_offset, size_t tslen, int delta_type,
856 c8ecd499 2018-09-09 stsp size_t delta_size, unsigned int recursion)
858 c3703302 2018-01-23 stsp const struct got_error *err = NULL;
860 5b7e13a7 2018-04-02 stsp if (--recursion == 0)
861 5b7e13a7 2018-04-02 stsp return got_error(GOT_ERR_RECURSION);
863 c3703302 2018-01-23 stsp switch (delta_type) {
864 4e8cda55 2018-01-19 stsp case GOT_OBJ_TYPE_COMMIT:
865 4e8cda55 2018-01-19 stsp case GOT_OBJ_TYPE_TREE:
866 4e8cda55 2018-01-19 stsp case GOT_OBJ_TYPE_BLOB:
867 4e8cda55 2018-01-19 stsp case GOT_OBJ_TYPE_TAG:
868 c3703302 2018-01-23 stsp /* Plain types are the final delta base. Recursion ends. */
869 c336f889 2018-07-23 stsp err = add_delta(deltas, delta_offset, tslen, delta_type,
870 c336f889 2018-07-23 stsp delta_size, 0, NULL, 0);
872 a3500804 2018-01-23 stsp case GOT_OBJ_TYPE_OFFSET_DELTA:
873 c8ecd499 2018-09-09 stsp err = resolve_offset_delta(deltas, packidx, pack,
874 b0e2201a 2018-06-22 stsp delta_offset, tslen, delta_type, delta_size, recursion - 1);
876 4e8cda55 2018-01-19 stsp case GOT_OBJ_TYPE_REF_DELTA:
877 c8ecd499 2018-09-09 stsp err = resolve_ref_delta(deltas, packidx, pack,
878 b0e2201a 2018-06-22 stsp delta_offset, tslen, delta_type, delta_size, recursion - 1);
881 4810de4a 2018-04-01 stsp return got_error(GOT_ERR_OBJ_TYPE);
884 96f5e8b3 2018-01-23 stsp return err;
887 96f5e8b3 2018-01-23 stsp static const struct got_error *
888 a98c62b1 2018-09-09 stsp open_delta_object(struct got_object **obj, struct got_packidx *packidx,
889 a98c62b1 2018-09-09 stsp struct got_pack *pack, struct got_object_id *id, off_t offset,
890 c59b3346 2018-09-11 stsp size_t tslen, int delta_type, size_t delta_size, int idx)
892 96f5e8b3 2018-01-23 stsp const struct got_error *err = NULL;
893 96f5e8b3 2018-01-23 stsp int resolved_type;
895 b107e67f 2018-01-19 stsp *obj = calloc(1, sizeof(**obj));
896 b107e67f 2018-01-19 stsp if (*obj == NULL)
897 638f9024 2019-05-13 stsp return got_error_from_errno("calloc");
899 96f5e8b3 2018-01-23 stsp (*obj)->flags = 0;
900 b107e67f 2018-01-19 stsp (*obj)->hdrlen = 0;
901 39e73dc9 2018-03-03 stsp (*obj)->size = 0; /* Not known because deltas aren't applied yet. */
902 106807b4 2018-09-15 stsp memcpy(&(*obj)->id, id, sizeof((*obj)->id));
903 cecc778e 2018-01-23 stsp (*obj)->pack_offset = offset + tslen;
905 1a35c1bc 2019-05-22 stsp SIMPLEQ_INIT(&(*obj)->deltas.entries);
906 1a35c1bc 2019-05-22 stsp (*obj)->flags |= GOT_OBJ_FLAG_DELTIFIED;
908 b0e2201a 2018-06-22 stsp (*obj)->path_packfile = strdup(pack->path_packfile);
909 96f5e8b3 2018-01-23 stsp if ((*obj)->path_packfile == NULL) {
910 638f9024 2019-05-13 stsp err = got_error_from_errno("strdup");
913 96f5e8b3 2018-01-23 stsp (*obj)->flags |= GOT_OBJ_FLAG_PACKED;
914 c59b3346 2018-09-11 stsp (*obj)->pack_idx = idx;
916 c8ecd499 2018-09-09 stsp err = resolve_delta_chain(&(*obj)->deltas, packidx, pack, offset,
917 b0e2201a 2018-06-22 stsp tslen, delta_type, delta_size, GOT_DELTA_CHAIN_RECURSION_MAX);
921 96f5e8b3 2018-01-23 stsp err = got_delta_chain_get_base_type(&resolved_type, &(*obj)->deltas);
924 96f5e8b3 2018-01-23 stsp (*obj)->type = resolved_type;
927 96f5e8b3 2018-01-23 stsp got_object_close(*obj);
928 96f5e8b3 2018-01-23 stsp *obj = NULL;
930 96f5e8b3 2018-01-23 stsp return err;
933 2090a03d 2018-09-09 stsp const struct got_error *
934 2090a03d 2018-09-09 stsp got_packfile_open_object(struct got_object **obj, struct got_pack *pack,
935 6fd11751 2018-06-04 stsp struct got_packidx *packidx, int idx, struct got_object_id *id)
937 a1fd68d8 2018-01-12 stsp const struct got_error *err = NULL;
938 a1fd68d8 2018-01-12 stsp off_t offset;
939 6c00b545 2018-01-17 stsp uint8_t type;
940 6c00b545 2018-01-17 stsp uint64_t size;
941 3ee5fc21 2018-01-17 stsp size_t tslen;
943 6c00b545 2018-01-17 stsp *obj = NULL;
945 a1fd68d8 2018-01-12 stsp offset = get_object_offset(packidx, idx);
946 a1fd68d8 2018-01-12 stsp if (offset == (uint64_t)-1)
947 a1fd68d8 2018-01-12 stsp return got_error(GOT_ERR_BAD_PACKIDX);
949 d7464085 2018-07-09 stsp err = parse_object_type_and_size(&type, &size, &tslen, pack, offset);
951 35c73765 2018-09-09 stsp return err;
953 6c00b545 2018-01-17 stsp switch (type) {
954 6c00b545 2018-01-17 stsp case GOT_OBJ_TYPE_COMMIT:
955 6c00b545 2018-01-17 stsp case GOT_OBJ_TYPE_TREE:
956 6c00b545 2018-01-17 stsp case GOT_OBJ_TYPE_BLOB:
957 d33fc9ef 2018-01-23 stsp case GOT_OBJ_TYPE_TAG:
958 35c73765 2018-09-09 stsp err = open_plain_object(obj, pack->path_packfile, id, type,
959 c59b3346 2018-09-11 stsp offset + tslen, size, idx);
961 b107e67f 2018-01-19 stsp case GOT_OBJ_TYPE_OFFSET_DELTA:
962 a48db7e5 2018-01-23 stsp case GOT_OBJ_TYPE_REF_DELTA:
963 a98c62b1 2018-09-09 stsp err = open_delta_object(obj, packidx, pack, id, offset,
964 c59b3346 2018-09-11 stsp tslen, type, size, idx);
967 4810de4a 2018-04-01 stsp err = got_error(GOT_ERR_OBJ_TYPE);
971 3ee5fc21 2018-01-17 stsp return err;
974 efd2a263 2018-01-19 stsp static const struct got_error *
975 40426839 2018-03-17 stsp get_delta_chain_max_size(uint64_t *max_size, struct got_delta_chain *deltas)
977 22484865 2018-03-13 stsp struct got_delta *delta;
978 22484865 2018-03-13 stsp uint64_t base_size = 0, result_size = 0;
980 22484865 2018-03-13 stsp *max_size = 0;
981 22484865 2018-03-13 stsp SIMPLEQ_FOREACH(delta, &deltas->entries, entry) {
982 22484865 2018-03-13 stsp /* Plain object types are the delta base. */
983 22484865 2018-03-13 stsp if (delta->type != GOT_OBJ_TYPE_COMMIT &&
984 22484865 2018-03-13 stsp delta->type != GOT_OBJ_TYPE_TREE &&
985 22484865 2018-03-13 stsp delta->type != GOT_OBJ_TYPE_BLOB &&
986 22484865 2018-03-13 stsp delta->type != GOT_OBJ_TYPE_TAG) {
987 22484865 2018-03-13 stsp const struct got_error *err;
988 a53d2f13 2018-03-17 stsp err = got_delta_get_sizes(&base_size, &result_size,
989 a53d2f13 2018-03-17 stsp delta->delta_buf, delta->delta_len);
991 22484865 2018-03-13 stsp return err;
993 22484865 2018-03-13 stsp base_size = delta->size;
994 22484865 2018-03-13 stsp if (base_size > *max_size)
995 22484865 2018-03-13 stsp *max_size = base_size;
996 22484865 2018-03-13 stsp if (result_size > *max_size)
997 22484865 2018-03-13 stsp *max_size = result_size;
1000 9feb4ff2 2018-03-14 stsp return NULL;
1003 ac544f8c 2019-01-13 stsp const struct got_error *
1004 85a703fa 2019-01-13 stsp got_pack_get_max_delta_object_size(uint64_t *size, struct got_object *obj)
1006 85a703fa 2019-01-13 stsp if ((obj->flags & GOT_OBJ_FLAG_DELTIFIED) == 0)
1007 85a703fa 2019-01-13 stsp return got_error(GOT_ERR_OBJ_TYPE);
1009 ac544f8c 2019-01-13 stsp return get_delta_chain_max_size(size, &obj->deltas);
1012 22484865 2018-03-13 stsp static const struct got_error *
1013 b29656e2 2018-03-16 stsp dump_delta_chain_to_file(size_t *result_size, struct got_delta_chain *deltas,
1014 3840f4c9 2018-09-12 stsp struct got_pack *pack, FILE *outfile, FILE *base_file, FILE *accum_file)
1016 efd2a263 2018-01-19 stsp const struct got_error *err = NULL;
1017 6691714a 2018-01-23 stsp struct got_delta *delta;
1018 8628c62d 2018-03-15 stsp uint8_t *base_buf = NULL, *accum_buf = NULL;
1019 34fca9c3 2018-11-11 stsp size_t base_bufsz = 0, accum_size = 0;
1020 22484865 2018-03-13 stsp uint64_t max_size;
1021 6691714a 2018-01-23 stsp int n = 0;
1023 b29656e2 2018-03-16 stsp *result_size = 0;
1025 710bb5ca 2018-01-23 stsp if (SIMPLEQ_EMPTY(&deltas->entries))
1026 6691714a 2018-01-23 stsp return got_error(GOT_ERR_BAD_DELTA_CHAIN);
1028 8628c62d 2018-03-15 stsp /* We process small enough files entirely in memory for speed. */
1029 40426839 2018-03-17 stsp err = get_delta_chain_max_size(&max_size, deltas);
1031 22484865 2018-03-13 stsp return err;
1032 8628c62d 2018-03-15 stsp if (max_size < GOT_DELTA_RESULT_SIZE_CACHED_MAX) {
1033 8628c62d 2018-03-15 stsp accum_buf = malloc(max_size);
1034 8628c62d 2018-03-15 stsp if (accum_buf == NULL)
1035 638f9024 2019-05-13 stsp return got_error_from_errno("malloc");
1036 3840f4c9 2018-09-12 stsp base_file = NULL;
1037 3840f4c9 2018-09-12 stsp accum_file = NULL;
1040 6691714a 2018-01-23 stsp /* Deltas are ordered in ascending order. */
1041 710bb5ca 2018-01-23 stsp SIMPLEQ_FOREACH(delta, &deltas->entries, entry) {
1042 a6b158cc 2018-02-11 stsp if (n == 0) {
1043 34fca9c3 2018-11-11 stsp size_t mapoff;
1044 0c048b15 2018-04-27 stsp off_t delta_data_offset;
1046 a6b158cc 2018-02-11 stsp /* Plain object types are the delta base. */
1047 a6b158cc 2018-02-11 stsp if (delta->type != GOT_OBJ_TYPE_COMMIT &&
1048 a6b158cc 2018-02-11 stsp delta->type != GOT_OBJ_TYPE_TREE &&
1049 a6b158cc 2018-02-11 stsp delta->type != GOT_OBJ_TYPE_BLOB &&
1050 a6b158cc 2018-02-11 stsp delta->type != GOT_OBJ_TYPE_TAG) {
1051 72eb3431 2018-04-01 stsp err = got_error(GOT_ERR_BAD_DELTA_CHAIN);
1052 72eb3431 2018-04-01 stsp goto done;
1055 0c048b15 2018-04-27 stsp delta_data_offset = delta->offset + delta->tslen;
1056 0c048b15 2018-04-27 stsp if (delta_data_offset >= pack->filesize) {
1057 0c048b15 2018-04-27 stsp err = got_error(GOT_ERR_PACK_OFFSET);
1058 0c048b15 2018-04-27 stsp goto done;
1060 d7464085 2018-07-09 stsp if (pack->map == NULL) {
1061 d7464085 2018-07-09 stsp if (lseek(pack->fd, delta_data_offset, SEEK_SET)
1063 638f9024 2019-05-13 stsp err = got_error_from_errno("lseek");
1064 d7464085 2018-07-09 stsp goto done;
1067 d7464085 2018-07-09 stsp if (base_file) {
1068 d7464085 2018-07-09 stsp if (pack->map) {
1069 d7464085 2018-07-09 stsp mapoff = (size_t)delta_data_offset;
1070 d7464085 2018-07-09 stsp err = got_inflate_to_file_mmap(
1071 34fca9c3 2018-11-11 stsp &base_bufsz, pack->map, mapoff,
1072 d7464085 2018-07-09 stsp pack->filesize - mapoff, base_file);
1074 34fca9c3 2018-11-11 stsp err = got_inflate_to_file_fd(
1075 34fca9c3 2018-11-11 stsp &base_bufsz, pack->fd, base_file);
1077 d7464085 2018-07-09 stsp if (pack->map) {
1078 d7464085 2018-07-09 stsp mapoff = (size_t)delta_data_offset;
1079 d7464085 2018-07-09 stsp err = got_inflate_to_mem_mmap(&base_buf,
1080 34fca9c3 2018-11-11 stsp &base_bufsz, pack->map, mapoff,
1081 d7464085 2018-07-09 stsp pack->filesize - mapoff);
1083 d7464085 2018-07-09 stsp err = got_inflate_to_mem_fd(&base_buf,
1084 34fca9c3 2018-11-11 stsp &base_bufsz, pack->fd);
1087 a6b158cc 2018-02-11 stsp goto done;
1089 8628c62d 2018-03-15 stsp if (base_file)
1090 8628c62d 2018-03-15 stsp rewind(base_file);
1094 8628c62d 2018-03-15 stsp if (base_buf) {
1095 34fca9c3 2018-11-11 stsp err = got_delta_apply_in_mem(base_buf, base_bufsz,
1096 34fca9c3 2018-11-11 stsp delta->delta_buf, delta->delta_len, accum_buf,
1097 34fca9c3 2018-11-11 stsp &accum_size, max_size);
1100 a53d2f13 2018-03-17 stsp err = got_delta_apply(base_file, delta->delta_buf,
1101 a53d2f13 2018-03-17 stsp delta->delta_len,
1102 8628c62d 2018-03-15 stsp /* Final delta application writes to output file. */
1103 b29656e2 2018-03-16 stsp ++n < deltas->nentries ? accum_file : outfile,
1104 b29656e2 2018-03-16 stsp &accum_size);
1107 6691714a 2018-01-23 stsp goto done;
1109 710bb5ca 2018-01-23 stsp if (n < deltas->nentries) {
1110 6691714a 2018-01-23 stsp /* Accumulated delta becomes the new base. */
1111 8628c62d 2018-03-15 stsp if (base_buf) {
1112 8628c62d 2018-03-15 stsp uint8_t *tmp = accum_buf;
1114 34fca9c3 2018-11-11 stsp * Base buffer switches roles with accumulation
1115 34fca9c3 2018-11-11 stsp * buffer. Ensure it can hold the largest
1116 34fca9c3 2018-11-11 stsp * result in the delta chain. The initial
1117 34fca9c3 2018-11-11 stsp * allocation might have been smaller.
1119 34fca9c3 2018-11-11 stsp if (base_bufsz < max_size) {
1120 34fca9c3 2018-11-11 stsp uint8_t *p;
1121 34fca9c3 2018-11-11 stsp p = reallocarray(base_buf, 1, max_size);
1122 34fca9c3 2018-11-11 stsp if (p == NULL) {
1123 638f9024 2019-05-13 stsp err = got_error_from_errno(
1124 230a42bd 2019-05-11 jcs "reallocarray");
1125 34fca9c3 2018-11-11 stsp goto done;
1127 34fca9c3 2018-11-11 stsp base_buf = p;
1128 34fca9c3 2018-11-11 stsp base_bufsz = max_size;
1130 8628c62d 2018-03-15 stsp accum_buf = base_buf;
1131 8628c62d 2018-03-15 stsp base_buf = tmp;
1133 8628c62d 2018-03-15 stsp FILE *tmp = accum_file;
1134 8628c62d 2018-03-15 stsp accum_file = base_file;
1135 8628c62d 2018-03-15 stsp base_file = tmp;
1136 8628c62d 2018-03-15 stsp rewind(base_file);
1137 8628c62d 2018-03-15 stsp rewind(accum_file);
1143 8628c62d 2018-03-15 stsp free(base_buf);
1144 8628c62d 2018-03-15 stsp if (accum_buf) {
1145 8628c62d 2018-03-15 stsp size_t len = fwrite(accum_buf, 1, accum_size, outfile);
1146 8628c62d 2018-03-15 stsp free(accum_buf);
1147 8628c62d 2018-03-15 stsp if (len != accum_size)
1148 673702af 2018-07-23 stsp err = got_ferror(outfile, GOT_ERR_IO);
1150 6691714a 2018-01-23 stsp rewind(outfile);
1151 b29656e2 2018-03-16 stsp if (err == NULL)
1152 b29656e2 2018-03-16 stsp *result_size = accum_size;
1153 e0ab43e7 2018-03-16 stsp return err;
1156 e0ab43e7 2018-03-16 stsp static const struct got_error *
1157 e0ab43e7 2018-03-16 stsp dump_delta_chain_to_mem(uint8_t **outbuf, size_t *outlen,
1158 48095039 2018-09-09 stsp struct got_delta_chain *deltas, struct got_pack *pack)
1160 e0ab43e7 2018-03-16 stsp const struct got_error *err = NULL;
1161 e0ab43e7 2018-03-16 stsp struct got_delta *delta;
1162 e0ab43e7 2018-03-16 stsp uint8_t *base_buf = NULL, *accum_buf = NULL;
1163 34fca9c3 2018-11-11 stsp size_t base_bufsz = 0, accum_size = 0;
1164 e0ab43e7 2018-03-16 stsp uint64_t max_size;
1165 e0ab43e7 2018-03-16 stsp int n = 0;
1167 e0ab43e7 2018-03-16 stsp *outbuf = NULL;
1168 e0ab43e7 2018-03-16 stsp *outlen = 0;
1170 e0ab43e7 2018-03-16 stsp if (SIMPLEQ_EMPTY(&deltas->entries))
1171 e0ab43e7 2018-03-16 stsp return got_error(GOT_ERR_BAD_DELTA_CHAIN);
1173 40426839 2018-03-17 stsp err = get_delta_chain_max_size(&max_size, deltas);
1175 e0ab43e7 2018-03-16 stsp return err;
1176 e0ab43e7 2018-03-16 stsp accum_buf = malloc(max_size);
1177 e0ab43e7 2018-03-16 stsp if (accum_buf == NULL)
1178 638f9024 2019-05-13 stsp return got_error_from_errno("malloc");
1180 e0ab43e7 2018-03-16 stsp /* Deltas are ordered in ascending order. */
1181 e0ab43e7 2018-03-16 stsp SIMPLEQ_FOREACH(delta, &deltas->entries, entry) {
1182 e0ab43e7 2018-03-16 stsp if (n == 0) {
1183 0c048b15 2018-04-27 stsp size_t delta_data_offset;
1185 e0ab43e7 2018-03-16 stsp /* Plain object types are the delta base. */
1186 e0ab43e7 2018-03-16 stsp if (delta->type != GOT_OBJ_TYPE_COMMIT &&
1187 e0ab43e7 2018-03-16 stsp delta->type != GOT_OBJ_TYPE_TREE &&
1188 e0ab43e7 2018-03-16 stsp delta->type != GOT_OBJ_TYPE_BLOB &&
1189 e0ab43e7 2018-03-16 stsp delta->type != GOT_OBJ_TYPE_TAG) {
1190 72eb3431 2018-04-01 stsp err = got_error(GOT_ERR_BAD_DELTA_CHAIN);
1191 72eb3431 2018-04-01 stsp goto done;
1194 0c048b15 2018-04-27 stsp delta_data_offset = delta->offset + delta->tslen;
1195 0c048b15 2018-04-27 stsp if (delta_data_offset >= pack->filesize) {
1196 0c048b15 2018-04-27 stsp err = got_error(GOT_ERR_PACK_OFFSET);
1197 0c048b15 2018-04-27 stsp goto done;
1199 d7464085 2018-07-09 stsp if (pack->map) {
1200 d7464085 2018-07-09 stsp size_t mapoff = (size_t)delta_data_offset;
1201 d7464085 2018-07-09 stsp err = got_inflate_to_mem_mmap(&base_buf,
1202 34fca9c3 2018-11-11 stsp &base_bufsz, pack->map, mapoff,
1203 d7464085 2018-07-09 stsp pack->filesize - mapoff);
1205 d7464085 2018-07-09 stsp if (lseek(pack->fd, delta_data_offset, SEEK_SET)
1207 638f9024 2019-05-13 stsp err = got_error_from_errno("lseek");
1208 d7464085 2018-07-09 stsp goto done;
1210 d7464085 2018-07-09 stsp err = got_inflate_to_mem_fd(&base_buf,
1211 34fca9c3 2018-11-11 stsp &base_bufsz, pack->fd);
1214 d7464085 2018-07-09 stsp goto done;
1219 34fca9c3 2018-11-11 stsp err = got_delta_apply_in_mem(base_buf, base_bufsz,
1220 34fca9c3 2018-11-11 stsp delta->delta_buf, delta->delta_len, accum_buf,
1221 34fca9c3 2018-11-11 stsp &accum_size, max_size);
1224 e0ab43e7 2018-03-16 stsp goto done;
1226 e0ab43e7 2018-03-16 stsp if (n < deltas->nentries) {
1227 e0ab43e7 2018-03-16 stsp /* Accumulated delta becomes the new base. */
1228 e0ab43e7 2018-03-16 stsp uint8_t *tmp = accum_buf;
1230 34fca9c3 2018-11-11 stsp * Base buffer switches roles with accumulation buffer.
1231 34fca9c3 2018-11-11 stsp * Ensure it can hold the largest result in the delta
1232 34fca9c3 2018-11-11 stsp * chain. Initial allocation might have been smaller.
1234 34fca9c3 2018-11-11 stsp if (base_bufsz < max_size) {
1235 34fca9c3 2018-11-11 stsp uint8_t *p;
1236 34fca9c3 2018-11-11 stsp p = reallocarray(base_buf, 1, max_size);
1237 34fca9c3 2018-11-11 stsp if (p == NULL) {
1238 638f9024 2019-05-13 stsp err = got_error_from_errno(
1239 230a42bd 2019-05-11 jcs "reallocarray");
1240 34fca9c3 2018-11-11 stsp goto done;
1242 34fca9c3 2018-11-11 stsp base_buf = p;
1243 34fca9c3 2018-11-11 stsp base_bufsz = max_size;
1245 e0ab43e7 2018-03-16 stsp accum_buf = base_buf;
1246 e0ab43e7 2018-03-16 stsp base_buf = tmp;
1251 e0ab43e7 2018-03-16 stsp free(base_buf);
1252 e0ab43e7 2018-03-16 stsp if (err) {
1253 e0ab43e7 2018-03-16 stsp free(accum_buf);
1254 e0ab43e7 2018-03-16 stsp *outbuf = NULL;
1255 e0ab43e7 2018-03-16 stsp *outlen = 0;
1257 e0ab43e7 2018-03-16 stsp *outbuf = accum_buf;
1258 e0ab43e7 2018-03-16 stsp *outlen = accum_size;
1260 efd2a263 2018-01-19 stsp return err;
1263 3ee5fc21 2018-01-17 stsp const struct got_error *
1264 24140570 2018-09-09 stsp got_packfile_extract_object(struct got_pack *pack, struct got_object *obj,
1265 3840f4c9 2018-09-12 stsp FILE *outfile, FILE *base_file, FILE *accum_file)
1267 3ee5fc21 2018-01-17 stsp const struct got_error *err = NULL;
1269 3ee5fc21 2018-01-17 stsp if ((obj->flags & GOT_OBJ_FLAG_PACKED) == 0)
1270 3ee5fc21 2018-01-17 stsp return got_error(GOT_ERR_OBJ_NOT_PACKED);
1272 ef2bccd9 2018-03-16 stsp if ((obj->flags & GOT_OBJ_FLAG_DELTIFIED) == 0) {
1273 24140570 2018-09-09 stsp if (obj->pack_offset >= pack->filesize)
1274 24140570 2018-09-09 stsp return got_error(GOT_ERR_PACK_OFFSET);
1276 d7464085 2018-07-09 stsp if (pack->map) {
1277 d7464085 2018-07-09 stsp size_t mapoff = (size_t)obj->pack_offset;
1278 d7464085 2018-07-09 stsp err = got_inflate_to_file_mmap(&obj->size, pack->map,
1279 24140570 2018-09-09 stsp mapoff, pack->filesize - mapoff, outfile);
1281 24140570 2018-09-09 stsp if (lseek(pack->fd, obj->pack_offset, SEEK_SET) == -1)
1282 638f9024 2019-05-13 stsp return got_error_from_errno("lseek");
1283 24140570 2018-09-09 stsp err = got_inflate_to_file_fd(&obj->size, pack->fd,
1287 2ce68b2f 2018-09-09 stsp err = dump_delta_chain_to_file(&obj->size, &obj->deltas, pack,
1288 3840f4c9 2018-09-12 stsp outfile, base_file, accum_file);
1290 a1fd68d8 2018-01-12 stsp return err;
1293 e0ab43e7 2018-03-16 stsp const struct got_error *
1294 e0ab43e7 2018-03-16 stsp got_packfile_extract_object_to_mem(uint8_t **buf, size_t *len,
1295 7e212e3d 2018-09-09 stsp struct got_object *obj, struct got_pack *pack)
1297 e0ab43e7 2018-03-16 stsp const struct got_error *err = NULL;
1299 e0ab43e7 2018-03-16 stsp if ((obj->flags & GOT_OBJ_FLAG_PACKED) == 0)
1300 e0ab43e7 2018-03-16 stsp return got_error(GOT_ERR_OBJ_NOT_PACKED);
1302 48095039 2018-09-09 stsp if ((obj->flags & GOT_OBJ_FLAG_DELTIFIED) == 0) {
1303 7e212e3d 2018-09-09 stsp if (obj->pack_offset >= pack->filesize)
1304 7e212e3d 2018-09-09 stsp return got_error(GOT_ERR_PACK_OFFSET);
1305 d7464085 2018-07-09 stsp if (pack->map) {
1306 d7464085 2018-07-09 stsp size_t mapoff = (size_t)obj->pack_offset;
1307 d7464085 2018-07-09 stsp err = got_inflate_to_mem_mmap(buf, len, pack->map,
1308 d7464085 2018-07-09 stsp mapoff, pack->filesize - mapoff);
1310 7e212e3d 2018-09-09 stsp if (lseek(pack->fd, obj->pack_offset, SEEK_SET) == -1)
1311 638f9024 2019-05-13 stsp return got_error_from_errno("lseek");
1312 d7464085 2018-07-09 stsp err = got_inflate_to_mem_fd(buf, len, pack->fd);
1315 48095039 2018-09-09 stsp err = dump_delta_chain_to_mem(buf, len, &obj->deltas, pack);
1317 e0ab43e7 2018-03-16 stsp return err;
