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));
129 c6368c2e 2019-10-11 stsp if (n < 0) {
130 638f9024 2019-05-13 stsp err = got_error_from_errno("read");
132 c6368c2e 2019-10-11 stsp } else if (n != sizeof(*h->version)) {
133 fc79a48d 2018-07-09 stsp err = got_error(GOT_ERR_BAD_PACKIDX);
137 57b35b75 2018-06-22 stsp if (betoh32(*h->version) != GOT_PACKIDX_VERSION) {
138 0a0a3048 2018-01-10 stsp err = got_error(GOT_ERR_BAD_PACKIDX);
141 57b35b75 2018-06-22 stsp offset += sizeof(*h->version);
142 57b35b75 2018-06-22 stsp remain -= sizeof(*h->version);
144 0cb74cf4 2018-07-08 stsp if (verify)
145 0cb74cf4 2018-07-08 stsp SHA1Update(&ctx, (uint8_t *)h->version, sizeof(*h->version));
147 57b35b75 2018-06-22 stsp len_fanout =
148 57b35b75 2018-06-22 stsp sizeof(*h->fanout_table) * GOT_PACKIDX_V2_FANOUT_TABLE_ITEMS;
149 57b35b75 2018-06-22 stsp if (remain < len_fanout) {
150 57b35b75 2018-06-22 stsp err = got_error(GOT_ERR_BAD_PACKIDX);
153 fc79a48d 2018-07-09 stsp if (p->map)
154 fc79a48d 2018-07-09 stsp h->fanout_table = (uint32_t *)(p->map + offset);
156 fc79a48d 2018-07-09 stsp h->fanout_table = malloc(len_fanout);
157 fc79a48d 2018-07-09 stsp if (h->fanout_table == NULL) {
158 638f9024 2019-05-13 stsp err = got_error_from_errno("malloc");
161 fc79a48d 2018-07-09 stsp n = read(p->fd, h->fanout_table, len_fanout);
162 c6368c2e 2019-10-11 stsp if (n < 0) {
163 638f9024 2019-05-13 stsp err = got_error_from_errno("read");
165 c6368c2e 2019-10-11 stsp } else if (n != len_fanout) {
166 fc79a48d 2018-07-09 stsp err = got_error(GOT_ERR_BAD_PACKIDX);
170 c8262310 2018-06-04 stsp err = verify_fanout_table(h->fanout_table);
173 0cb74cf4 2018-07-08 stsp if (verify)
174 0cb74cf4 2018-07-08 stsp SHA1Update(&ctx, (uint8_t *)h->fanout_table, len_fanout);
175 57b35b75 2018-06-22 stsp offset += len_fanout;
176 57b35b75 2018-06-22 stsp remain -= len_fanout;
178 c8262310 2018-06-04 stsp nobj = betoh32(h->fanout_table[0xff]);
179 57b35b75 2018-06-22 stsp len_ids = nobj * sizeof(*h->sorted_ids);
180 57b35b75 2018-06-22 stsp if (len_ids <= nobj || len_ids > remain) {
181 57b35b75 2018-06-22 stsp err = got_error(GOT_ERR_BAD_PACKIDX);
184 fc79a48d 2018-07-09 stsp if (p->map)
185 fc79a48d 2018-07-09 stsp h->sorted_ids =
186 fc79a48d 2018-07-09 stsp (struct got_packidx_object_id *)((uint8_t*)(p->map + offset));
188 fc79a48d 2018-07-09 stsp h->sorted_ids = malloc(len_ids);
189 fc79a48d 2018-07-09 stsp if (h->sorted_ids == NULL) {
190 fc79a48d 2018-07-09 stsp err = got_error(GOT_ERR_BAD_PACKIDX);
193 fc79a48d 2018-07-09 stsp n = read(p->fd, h->sorted_ids, len_ids);
195 638f9024 2019-05-13 stsp err = got_error_from_errno("read");
196 faaa1c0f 2018-09-15 stsp else if (n != len_ids) {
197 fc79a48d 2018-07-09 stsp err = got_error(GOT_ERR_BAD_PACKIDX);
201 0cb74cf4 2018-07-08 stsp if (verify)
202 0cb74cf4 2018-07-08 stsp SHA1Update(&ctx, (uint8_t *)h->sorted_ids, len_ids);
203 57b35b75 2018-06-22 stsp offset += len_ids;
204 57b35b75 2018-06-22 stsp remain -= len_ids;
206 57b35b75 2018-06-22 stsp if (remain < nobj * sizeof(*h->crc32)) {
207 57b35b75 2018-06-22 stsp err = got_error(GOT_ERR_BAD_PACKIDX);
210 fc79a48d 2018-07-09 stsp if (p->map)
211 fc79a48d 2018-07-09 stsp h->crc32 = (uint32_t *)((uint8_t*)(p->map + offset));
213 fc79a48d 2018-07-09 stsp h->crc32 = malloc(nobj * sizeof(*h->crc32));
214 fc79a48d 2018-07-09 stsp if (h->crc32 == NULL) {
215 638f9024 2019-05-13 stsp err = got_error_from_errno("malloc");
218 fc79a48d 2018-07-09 stsp n = read(p->fd, h->crc32, nobj * sizeof(*h->crc32));
220 638f9024 2019-05-13 stsp err = got_error_from_errno("read");
221 faaa1c0f 2018-09-15 stsp else if (n != nobj * sizeof(*h->crc32)) {
222 fc79a48d 2018-07-09 stsp err = got_error(GOT_ERR_BAD_PACKIDX);
226 0cb74cf4 2018-07-08 stsp if (verify)
227 0cb74cf4 2018-07-08 stsp SHA1Update(&ctx, (uint8_t *)h->crc32, nobj * sizeof(*h->crc32));
228 57b35b75 2018-06-22 stsp remain -= nobj * sizeof(*h->crc32);
229 57b35b75 2018-06-22 stsp offset += nobj * sizeof(*h->crc32);
231 57b35b75 2018-06-22 stsp if (remain < nobj * sizeof(*h->offsets)) {
232 57b35b75 2018-06-22 stsp err = got_error(GOT_ERR_BAD_PACKIDX);
235 fc79a48d 2018-07-09 stsp if (p->map)
236 fc79a48d 2018-07-09 stsp h->offsets = (uint32_t *)((uint8_t*)(p->map + offset));
238 fc79a48d 2018-07-09 stsp h->offsets = malloc(nobj * sizeof(*h->offsets));
239 fc79a48d 2018-07-09 stsp if (h->offsets == NULL) {
240 638f9024 2019-05-13 stsp err = got_error_from_errno("malloc");
243 fc79a48d 2018-07-09 stsp n = read(p->fd, h->offsets, nobj * sizeof(*h->offsets));
245 638f9024 2019-05-13 stsp err = got_error_from_errno("read");
246 faaa1c0f 2018-09-15 stsp else if (n != nobj * sizeof(*h->offsets)) {
247 fc79a48d 2018-07-09 stsp err = got_error(GOT_ERR_BAD_PACKIDX);
251 0cb74cf4 2018-07-08 stsp if (verify)
252 0cb74cf4 2018-07-08 stsp SHA1Update(&ctx, (uint8_t *)h->offsets,
253 0cb74cf4 2018-07-08 stsp nobj * sizeof(*h->offsets));
254 57b35b75 2018-06-22 stsp remain -= nobj * sizeof(*h->offsets);
255 57b35b75 2018-06-22 stsp offset += nobj * sizeof(*h->offsets);
257 0a0a3048 2018-01-10 stsp /* Large file offsets are contained only in files > 2GB. */
258 57b35b75 2018-06-22 stsp if (p->len <= 0x80000000)
259 0a0a3048 2018-01-10 stsp goto checksum;
261 57b35b75 2018-06-22 stsp if (remain < nobj * sizeof(*h->large_offsets)) {
262 57b35b75 2018-06-22 stsp err = got_error(GOT_ERR_BAD_PACKIDX);
265 fc79a48d 2018-07-09 stsp if (p->map)
266 fc79a48d 2018-07-09 stsp h->large_offsets = (uint64_t *)((uint8_t*)(p->map + offset));
268 de30857e 2019-08-23 stsp h->large_offsets = malloc(nobj * sizeof(*h->large_offsets));
269 de30857e 2019-08-23 stsp if (h->large_offsets == NULL) {
270 638f9024 2019-05-13 stsp err = got_error_from_errno("malloc");
273 fc79a48d 2018-07-09 stsp n = read(p->fd, h->large_offsets,
274 fc79a48d 2018-07-09 stsp nobj * sizeof(*h->large_offsets));
276 638f9024 2019-05-13 stsp err = got_error_from_errno("read");
277 faaa1c0f 2018-09-15 stsp else if (n != nobj * sizeof(*h->large_offsets)) {
278 fc79a48d 2018-07-09 stsp err = got_error(GOT_ERR_BAD_PACKIDX);
282 0cb74cf4 2018-07-08 stsp if (verify)
283 0cb74cf4 2018-07-08 stsp SHA1Update(&ctx, (uint8_t*)h->large_offsets,
284 0cb74cf4 2018-07-08 stsp nobj * sizeof(*h->large_offsets));
285 57b35b75 2018-06-22 stsp remain -= nobj * sizeof(*h->large_offsets);
286 57b35b75 2018-06-22 stsp offset += nobj * sizeof(*h->large_offsets);
289 57b35b75 2018-06-22 stsp if (remain < sizeof(*h->trailer)) {
290 57b35b75 2018-06-22 stsp err = got_error(GOT_ERR_BAD_PACKIDX);
293 fc79a48d 2018-07-09 stsp if (p->map)
294 fc79a48d 2018-07-09 stsp h->trailer =
295 fc79a48d 2018-07-09 stsp (struct got_packidx_trailer *)((uint8_t*)(p->map + offset));
297 fc79a48d 2018-07-09 stsp h->trailer = malloc(sizeof(*h->trailer));
298 fc79a48d 2018-07-09 stsp if (h->trailer == NULL) {
299 638f9024 2019-05-13 stsp err = got_error_from_errno("malloc");
302 fc79a48d 2018-07-09 stsp n = read(p->fd, h->trailer, sizeof(*h->trailer));
304 638f9024 2019-05-13 stsp err = got_error_from_errno("read");
305 faaa1c0f 2018-09-15 stsp else if (n != sizeof(*h->trailer)) {
306 fc79a48d 2018-07-09 stsp err = got_error(GOT_ERR_BAD_PACKIDX);
310 0cb74cf4 2018-07-08 stsp if (verify) {
311 0cb74cf4 2018-07-08 stsp SHA1Update(&ctx, h->trailer->packfile_sha1, SHA1_DIGEST_LENGTH);
312 0cb74cf4 2018-07-08 stsp SHA1Final(sha1, &ctx);
313 0cb74cf4 2018-07-08 stsp if (memcmp(h->trailer->packidx_sha1, sha1,
314 0cb74cf4 2018-07-08 stsp SHA1_DIGEST_LENGTH) != 0)
315 0cb74cf4 2018-07-08 stsp err = got_error(GOT_ERR_PACKIDX_CSUM);
318 817c5a18 2018-09-09 stsp return err;
321 817c5a18 2018-09-09 stsp const struct got_error *
322 817c5a18 2018-09-09 stsp got_packidx_open(struct got_packidx **packidx, const char *path, int verify)
324 817c5a18 2018-09-09 stsp const struct got_error *err = NULL;
325 817c5a18 2018-09-09 stsp struct got_packidx *p;
326 57377f07 2019-05-23 stsp struct stat sb;
328 817c5a18 2018-09-09 stsp *packidx = NULL;
330 817c5a18 2018-09-09 stsp p = calloc(1, sizeof(*p));
331 817c5a18 2018-09-09 stsp if (p == NULL)
332 638f9024 2019-05-13 stsp return got_error_from_errno("calloc");
334 a5b57ccf 2019-04-11 stsp p->fd = open(path, O_RDONLY | O_NOFOLLOW);
335 6772cf22 2019-08-28 hiltjo if (p->fd == -1) {
336 6772cf22 2019-08-28 hiltjo err = got_error_from_errno2("open", path);
338 6772cf22 2019-08-28 hiltjo return err;
341 57377f07 2019-05-23 stsp if (fstat(p->fd, &sb) != 0) {
342 57377f07 2019-05-23 stsp err = got_error_from_errno2("fstat", path);
343 817c5a18 2018-09-09 stsp close(p->fd);
345 817c5a18 2018-09-09 stsp return err;
347 57377f07 2019-05-23 stsp p->len = sb.st_size;
348 817c5a18 2018-09-09 stsp if (p->len < sizeof(p->hdr)) {
349 817c5a18 2018-09-09 stsp err = got_error(GOT_ERR_BAD_PACKIDX);
350 817c5a18 2018-09-09 stsp close(p->fd);
352 817c5a18 2018-09-09 stsp return err;
355 817c5a18 2018-09-09 stsp p->path_packidx = strdup(path);
356 817c5a18 2018-09-09 stsp if (p->path_packidx == NULL) {
357 638f9024 2019-05-13 stsp err = got_error_from_errno("strdup");
361 817c5a18 2018-09-09 stsp #ifndef GOT_PACK_NO_MMAP
362 817c5a18 2018-09-09 stsp p->map = mmap(NULL, p->len, PROT_READ, MAP_PRIVATE, p->fd, 0);
363 3a11398b 2019-02-21 stsp if (p->map == MAP_FAILED) {
364 3a11398b 2019-02-21 stsp if (errno != ENOMEM) {
365 638f9024 2019-05-13 stsp err = got_error_from_errno("mmap");
368 817c5a18 2018-09-09 stsp p->map = NULL; /* fall back to read(2) */
372 817c5a18 2018-09-09 stsp err = got_packidx_init_hdr(p, verify);
375 0a0a3048 2018-01-10 stsp got_packidx_close(p);
377 0a0a3048 2018-01-10 stsp *packidx = p;
379 0a0a3048 2018-01-10 stsp return err;
382 57b35b75 2018-06-22 stsp const struct got_error *
383 6fd11751 2018-06-04 stsp got_packidx_close(struct got_packidx *packidx)
385 57b35b75 2018-06-22 stsp const struct got_error *err = NULL;
387 6fd11751 2018-06-04 stsp free(packidx->path_packidx);
388 fc79a48d 2018-07-09 stsp if (packidx->map) {
389 57b35b75 2018-06-22 stsp if (munmap(packidx->map, packidx->len) == -1)
390 638f9024 2019-05-13 stsp err = got_error_from_errno("munmap");
392 fc79a48d 2018-07-09 stsp free(packidx->hdr.magic);
393 fc79a48d 2018-07-09 stsp free(packidx->hdr.version);
394 fc79a48d 2018-07-09 stsp free(packidx->hdr.fanout_table);
395 fc79a48d 2018-07-09 stsp free(packidx->hdr.sorted_ids);
396 fc79a48d 2018-07-09 stsp free(packidx->hdr.crc32);
397 fc79a48d 2018-07-09 stsp free(packidx->hdr.offsets);
398 fc79a48d 2018-07-09 stsp free(packidx->hdr.large_offsets);
399 fc79a48d 2018-07-09 stsp free(packidx->hdr.trailer);
401 3a6ce05a 2019-02-11 stsp if (close(packidx->fd) != 0 && err == NULL)
402 638f9024 2019-05-13 stsp err = got_error_from_errno("close");
403 0a0a3048 2018-01-10 stsp free(packidx);
405 57b35b75 2018-06-22 stsp return err;
408 a1fd68d8 2018-01-12 stsp static off_t
409 6fd11751 2018-06-04 stsp get_object_offset(struct got_packidx *packidx, int idx)
411 6fd11751 2018-06-04 stsp uint32_t totobj = betoh32(packidx->hdr.fanout_table[0xff]);
412 6fd11751 2018-06-04 stsp uint32_t offset = betoh32(packidx->hdr.offsets[idx]);
413 a1fd68d8 2018-01-12 stsp if (offset & GOT_PACKIDX_OFFSET_VAL_IS_LARGE_IDX) {
414 a1fd68d8 2018-01-12 stsp uint64_t loffset;
415 a1fd68d8 2018-01-12 stsp idx = offset & GOT_PACKIDX_OFFSET_VAL_MASK;
416 6fd11751 2018-06-04 stsp if (idx < 0 || idx > totobj ||
417 6fd11751 2018-06-04 stsp packidx->hdr.large_offsets == NULL)
419 6fd11751 2018-06-04 stsp loffset = betoh64(packidx->hdr.large_offsets[idx]);
420 a1fd68d8 2018-01-12 stsp return (loffset > INT64_MAX ? -1 : (off_t)loffset);
422 a1fd68d8 2018-01-12 stsp return (off_t)(offset & GOT_PACKIDX_OFFSET_VAL_MASK);
426 1510f469 2018-09-09 stsp got_packidx_get_object_idx(struct got_packidx *packidx, struct got_object_id *id)
428 a1fd68d8 2018-01-12 stsp u_int8_t id0 = id->sha1[0];
429 6fd11751 2018-06-04 stsp uint32_t totobj = betoh32(packidx->hdr.fanout_table[0xff]);
430 40aeb19c 2018-06-22 stsp int left = 0, right = totobj - 1;
432 a1fd68d8 2018-01-12 stsp if (id0 > 0)
433 40aeb19c 2018-06-22 stsp left = betoh32(packidx->hdr.fanout_table[id0 - 1]);
435 40aeb19c 2018-06-22 stsp while (left <= right) {
436 57b35b75 2018-06-22 stsp struct got_packidx_object_id *oid;
437 40aeb19c 2018-06-22 stsp int i, cmp;
439 40aeb19c 2018-06-22 stsp i = ((left + right) / 2);
440 40aeb19c 2018-06-22 stsp oid = &packidx->hdr.sorted_ids[i];
441 57b35b75 2018-06-22 stsp cmp = memcmp(id->sha1, oid->sha1, SHA1_DIGEST_LENGTH);
442 16dcbf91 2018-04-01 stsp if (cmp == 0)
444 40aeb19c 2018-06-22 stsp else if (cmp > 0)
445 40aeb19c 2018-06-22 stsp left = i + 1;
446 40aeb19c 2018-06-22 stsp else if (cmp < 0)
447 40aeb19c 2018-06-22 stsp right = i - 1;
453 876c234b 2018-09-10 stsp const struct got_error *
454 dd88155e 2019-06-29 stsp got_packidx_match_id_str_prefix(struct got_object_id_queue *matched_ids,
455 4277420a 2019-06-29 stsp struct got_packidx *packidx, const char *id_str_prefix)
457 dd88155e 2019-06-29 stsp const struct got_error *err = NULL;
458 4277420a 2019-06-29 stsp u_int8_t id0;
459 4277420a 2019-06-29 stsp uint32_t totobj = betoh32(packidx->hdr.fanout_table[0xff]);
460 4277420a 2019-06-29 stsp char hex[3];
461 4277420a 2019-06-29 stsp size_t prefix_len = strlen(id_str_prefix);
462 e09a504c 2019-06-28 stsp struct got_packidx_object_id *oid;
465 dd88155e 2019-06-29 stsp SIMPLEQ_INIT(matched_ids);
467 4277420a 2019-06-29 stsp if (prefix_len < 2)
468 4277420a 2019-06-29 stsp return got_error(GOT_ERR_BAD_OBJ_ID_STR);
470 4277420a 2019-06-29 stsp hex[0] = id_str_prefix[0];
471 4277420a 2019-06-29 stsp hex[1] = id_str_prefix[1];
472 4277420a 2019-06-29 stsp hex[2] = '\0';
473 4277420a 2019-06-29 stsp if (!got_parse_xdigit(&id0, hex))
474 4277420a 2019-06-29 stsp return got_error(GOT_ERR_BAD_OBJ_ID_STR);
476 4277420a 2019-06-29 stsp i = betoh32(packidx->hdr.fanout_table[id0 - 1]);
477 4277420a 2019-06-29 stsp if (i == 0)
478 4277420a 2019-06-29 stsp return NULL;
480 4277420a 2019-06-29 stsp oid = &packidx->hdr.sorted_ids[i];
481 4277420a 2019-06-29 stsp while (i < totobj && oid->sha1[0] == id0) {
482 4277420a 2019-06-29 stsp char id_str[SHA1_DIGEST_STRING_LENGTH];
483 dd88155e 2019-06-29 stsp struct got_object_qid *qid;
486 4277420a 2019-06-29 stsp if (!got_sha1_digest_to_str(oid->sha1, id_str, sizeof(id_str)))
487 4277420a 2019-06-29 stsp return got_error(GOT_ERR_NO_SPACE);
489 4277420a 2019-06-29 stsp cmp = strncmp(id_str, id_str_prefix, prefix_len);
490 4277420a 2019-06-29 stsp if (cmp < 0) {
491 4277420a 2019-06-29 stsp oid = &packidx->hdr.sorted_ids[++i];
493 4277420a 2019-06-29 stsp } else if (cmp > 0)
496 dd88155e 2019-06-29 stsp err = got_object_qid_alloc_partial(&qid);
499 dd88155e 2019-06-29 stsp memcpy(qid->id->sha1, oid->sha1, SHA1_DIGEST_LENGTH);
500 dd88155e 2019-06-29 stsp SIMPLEQ_INSERT_TAIL(matched_ids, qid, entry);
502 4277420a 2019-06-29 stsp oid = &packidx->hdr.sorted_ids[++i];
506 0adc7bcc 2019-06-29 stsp got_object_id_queue_free(matched_ids);
507 dd88155e 2019-06-29 stsp return err;
510 e09a504c 2019-06-28 stsp const struct got_error *
511 876c234b 2018-09-10 stsp got_pack_stop_privsep_child(struct got_pack *pack)
513 96732e0b 2018-11-11 stsp const struct got_error *err = NULL;
515 876c234b 2018-09-10 stsp if (pack->privsep_child == NULL)
516 876c234b 2018-09-10 stsp return NULL;
518 876c234b 2018-09-10 stsp err = got_privsep_send_stop(pack->privsep_child->imsg_fd);
520 96732e0b 2018-11-11 stsp return err;
521 96732e0b 2018-11-11 stsp err = got_privsep_wait_for_child(pack->privsep_child->pid);
522 0dd5271b 2019-05-10 stsp if (close(pack->privsep_child->imsg_fd) != 0 && err == NULL)
523 638f9024 2019-05-13 stsp err = got_error_from_errno("close");
524 876c234b 2018-09-10 stsp free(pack->privsep_child);
525 876c234b 2018-09-10 stsp pack->privsep_child = NULL;
526 876c234b 2018-09-10 stsp return err;
529 d7464085 2018-07-09 stsp const struct got_error *
530 7e656b93 2018-03-17 stsp got_pack_close(struct got_pack *pack)
532 d7464085 2018-07-09 stsp const struct got_error *err = NULL;
534 876c234b 2018-09-10 stsp err = got_pack_stop_privsep_child(pack);
535 876c234b 2018-09-10 stsp if (pack->map && munmap(pack->map, pack->filesize) == -1 && !err)
536 638f9024 2019-05-13 stsp err = got_error_from_errno("munmap");
537 3a6ce05a 2019-02-11 stsp if (pack->fd != -1 && close(pack->fd) != 0 && err == NULL)
538 638f9024 2019-05-13 stsp err = got_error_from_errno("close");
539 8b2180d4 2018-04-26 stsp pack->fd = -1;
540 4589e373 2018-03-17 stsp free(pack->path_packfile);
541 4589e373 2018-03-17 stsp pack->path_packfile = NULL;
542 4589e373 2018-03-17 stsp pack->filesize = 0;
544 c7fe698a 2018-01-23 stsp return err;
547 c7fe698a 2018-01-23 stsp static const struct got_error *
548 d7464085 2018-07-09 stsp parse_object_type_and_size(uint8_t *type, uint64_t *size, size_t *len,
549 d7464085 2018-07-09 stsp struct got_pack *pack, off_t offset)
551 a487c1d0 2018-01-14 stsp uint8_t t = 0;
552 a487c1d0 2018-01-14 stsp uint64_t s = 0;
553 a487c1d0 2018-01-14 stsp uint8_t sizeN;
554 d7464085 2018-07-09 stsp size_t mapoff = 0;
559 d7464085 2018-07-09 stsp if (offset >= pack->filesize)
560 d7464085 2018-07-09 stsp return got_error(GOT_ERR_PACK_OFFSET);
562 d7464085 2018-07-09 stsp if (pack->map) {
563 d7464085 2018-07-09 stsp mapoff = (size_t)offset;
565 d7464085 2018-07-09 stsp if (lseek(pack->fd, offset, SEEK_SET) == -1)
566 638f9024 2019-05-13 stsp return got_error_from_errno("lseek");
570 a1fd68d8 2018-01-12 stsp /* We do not support size values which don't fit in 64 bit. */
572 a487c1d0 2018-01-14 stsp return got_error(GOT_ERR_NO_SPACE);
574 d7464085 2018-07-09 stsp if (pack->map) {
575 d7464085 2018-07-09 stsp sizeN = *(pack->map + mapoff);
576 d7464085 2018-07-09 stsp mapoff += sizeof(sizeN);
578 d7464085 2018-07-09 stsp ssize_t n = read(pack->fd, &sizeN, sizeof(sizeN));
580 638f9024 2019-05-13 stsp return got_error_from_errno("read");
581 d7464085 2018-07-09 stsp if (n != sizeof(sizeN))
582 d7464085 2018-07-09 stsp return got_error(GOT_ERR_BAD_PACKFILE);
584 d7464085 2018-07-09 stsp *len += sizeof(sizeN);
586 a1fd68d8 2018-01-12 stsp if (i == 0) {
587 a487c1d0 2018-01-14 stsp t = (sizeN & GOT_PACK_OBJ_SIZE0_TYPE_MASK) >>
588 a1fd68d8 2018-01-12 stsp GOT_PACK_OBJ_SIZE0_TYPE_MASK_SHIFT;
589 a487c1d0 2018-01-14 stsp s = (sizeN & GOT_PACK_OBJ_SIZE0_VAL_MASK);
591 a1fd68d8 2018-01-12 stsp size_t shift = 4 + 7 * (i - 1);
592 a487c1d0 2018-01-14 stsp s |= ((sizeN & GOT_PACK_OBJ_SIZE_VAL_MASK) << shift);
595 a1fd68d8 2018-01-12 stsp } while (sizeN & GOT_PACK_OBJ_SIZE_MORE);
599 a487c1d0 2018-01-14 stsp return NULL;
602 a1fd68d8 2018-01-12 stsp static const struct got_error *
603 9710aac2 2018-01-19 stsp open_plain_object(struct got_object **obj, const char *path_packfile,
604 c59b3346 2018-09-11 stsp struct got_object_id *id, uint8_t type, off_t offset, size_t size, int idx)
606 6ccb713b 2018-01-19 stsp *obj = calloc(1, sizeof(**obj));
607 6ccb713b 2018-01-19 stsp if (*obj == NULL)
608 638f9024 2019-05-13 stsp return got_error_from_errno("calloc");
610 6ccb713b 2018-01-19 stsp (*obj)->path_packfile = strdup(path_packfile);
611 6ccb713b 2018-01-19 stsp if ((*obj)->path_packfile == NULL) {
612 638f9024 2019-05-13 stsp const struct got_error *err = got_error_from_errno("strdup");
613 6ccb713b 2018-01-19 stsp free(*obj);
614 6ccb713b 2018-01-19 stsp *obj = NULL;
615 0a585a0d 2018-03-17 stsp return err;
618 6ccb713b 2018-01-19 stsp (*obj)->type = type;
619 6ccb713b 2018-01-19 stsp (*obj)->flags = GOT_OBJ_FLAG_PACKED;
620 c59b3346 2018-09-11 stsp (*obj)->pack_idx = idx;
621 6ccb713b 2018-01-19 stsp (*obj)->hdrlen = 0;
622 6ccb713b 2018-01-19 stsp (*obj)->size = size;
623 106807b4 2018-09-15 stsp memcpy(&(*obj)->id, id, sizeof((*obj)->id));
624 6ccb713b 2018-01-19 stsp (*obj)->pack_offset = offset;
626 b107e67f 2018-01-19 stsp return NULL;
629 b107e67f 2018-01-19 stsp static const struct got_error *
630 d7464085 2018-07-09 stsp parse_negative_offset(int64_t *offset, size_t *len, struct got_pack *pack,
631 d7464085 2018-07-09 stsp off_t delta_offset)
633 b107e67f 2018-01-19 stsp int64_t o = 0;
634 b107e67f 2018-01-19 stsp uint8_t offN;
637 a0de39f3 2019-08-09 stsp *offset = 0;
641 b107e67f 2018-01-19 stsp /* We do not support offset values which don't fit in 64 bit. */
643 b107e67f 2018-01-19 stsp return got_error(GOT_ERR_NO_SPACE);
645 d7464085 2018-07-09 stsp if (pack->map) {
646 d7464085 2018-07-09 stsp size_t mapoff;
647 d7464085 2018-07-09 stsp if (delta_offset >= pack->filesize)
648 d7464085 2018-07-09 stsp return got_error(GOT_ERR_PACK_OFFSET);
649 d7464085 2018-07-09 stsp mapoff = (size_t)delta_offset + *len;
650 d7464085 2018-07-09 stsp offN = *(pack->map + mapoff);
653 d7464085 2018-07-09 stsp n = read(pack->fd, &offN, sizeof(offN));
655 638f9024 2019-05-13 stsp return got_error_from_errno("read");
656 d7464085 2018-07-09 stsp if (n != sizeof(offN))
657 d7464085 2018-07-09 stsp return got_error(GOT_ERR_BAD_PACKFILE);
659 d7464085 2018-07-09 stsp *len += sizeof(offN);
661 b107e67f 2018-01-19 stsp if (i == 0)
662 b107e67f 2018-01-19 stsp o = (offN & GOT_PACK_OBJ_DELTA_OFF_VAL_MASK);
666 cecc778e 2018-01-23 stsp o += (offN & GOT_PACK_OBJ_DELTA_OFF_VAL_MASK);
669 b107e67f 2018-01-19 stsp } while (offN & GOT_PACK_OBJ_DELTA_OFF_MORE);
671 b107e67f 2018-01-19 stsp *offset = o;
672 6ccb713b 2018-01-19 stsp return NULL;
675 6ccb713b 2018-01-19 stsp static const struct got_error *
676 d7464085 2018-07-09 stsp parse_offset_delta(off_t *base_offset, size_t *len, struct got_pack *pack,
677 d7464085 2018-07-09 stsp off_t offset, int tslen)
679 96f5e8b3 2018-01-23 stsp const struct got_error *err;
680 b107e67f 2018-01-19 stsp int64_t negoffset;
681 b107e67f 2018-01-19 stsp size_t negofflen;
685 d7464085 2018-07-09 stsp err = parse_negative_offset(&negoffset, &negofflen, pack,
686 d7464085 2018-07-09 stsp offset + tslen);
688 b107e67f 2018-01-19 stsp return err;
690 b107e67f 2018-01-19 stsp /* Compute the base object's offset (must be in the same pack file). */
691 96f5e8b3 2018-01-23 stsp *base_offset = (offset - negoffset);
692 96f5e8b3 2018-01-23 stsp if (*base_offset <= 0)
693 b107e67f 2018-01-19 stsp return got_error(GOT_ERR_BAD_PACKFILE);
695 d7464085 2018-07-09 stsp *len = negofflen;
696 96f5e8b3 2018-01-23 stsp return NULL;
699 0e22967e 2018-02-11 stsp static const struct got_error *
700 c8ecd499 2018-09-09 stsp resolve_delta_chain(struct got_delta_chain *, struct got_packidx *,
701 c8ecd499 2018-09-09 stsp struct got_pack *, off_t, size_t, int, size_t, unsigned int);
703 96f5e8b3 2018-01-23 stsp static const struct got_error *
704 c336f889 2018-07-23 stsp add_delta(struct got_delta_chain *deltas, off_t delta_offset, size_t tslen,
705 c336f889 2018-07-23 stsp int delta_type, size_t delta_size, size_t delta_data_offset,
706 c336f889 2018-07-23 stsp uint8_t *delta_buf, size_t delta_len)
708 bdd2fbb3 2018-02-11 stsp struct got_delta *delta;
710 c336f889 2018-07-23 stsp delta = got_delta_open(delta_offset, tslen, delta_type, delta_size,
711 c336f889 2018-07-23 stsp delta_data_offset, delta_buf,
712 a53d2f13 2018-03-17 stsp delta_len);
713 bdd2fbb3 2018-02-11 stsp if (delta == NULL)
714 638f9024 2019-05-13 stsp return got_error_from_errno("got_delta_open");
715 bdd2fbb3 2018-02-11 stsp /* delta is freed in got_object_close() */
716 bdd2fbb3 2018-02-11 stsp deltas->nentries++;
717 bdd2fbb3 2018-02-11 stsp SIMPLEQ_INSERT_HEAD(&deltas->entries, delta, entry);
718 bdd2fbb3 2018-02-11 stsp return NULL;
721 bdd2fbb3 2018-02-11 stsp static const struct got_error *
722 6b9c9673 2018-01-23 stsp resolve_offset_delta(struct got_delta_chain *deltas,
723 c8ecd499 2018-09-09 stsp struct got_packidx *packidx, struct got_pack *pack, off_t delta_offset,
724 c8ecd499 2018-09-09 stsp size_t tslen, int delta_type, size_t delta_size, unsigned int recursion)
727 a3500804 2018-01-23 stsp const struct got_error *err;
728 c3703302 2018-01-23 stsp off_t base_offset;
729 c3703302 2018-01-23 stsp uint8_t base_type;
730 c3703302 2018-01-23 stsp uint64_t base_size;
731 c3703302 2018-01-23 stsp size_t base_tslen;
732 bdd2fbb3 2018-02-11 stsp off_t delta_data_offset;
733 a53d2f13 2018-03-17 stsp uint8_t *delta_buf;
734 d7464085 2018-07-09 stsp size_t delta_len, consumed;
736 d7464085 2018-07-09 stsp err = parse_offset_delta(&base_offset, &consumed, pack,
737 d7464085 2018-07-09 stsp delta_offset, tslen);
739 a3500804 2018-01-23 stsp return err;
741 d7464085 2018-07-09 stsp delta_data_offset = delta_offset + tslen + consumed;
742 d7464085 2018-07-09 stsp if (delta_data_offset >= pack->filesize)
743 d7464085 2018-07-09 stsp return got_error(GOT_ERR_PACK_OFFSET);
745 d7464085 2018-07-09 stsp if (pack->map == NULL) {
746 d7464085 2018-07-09 stsp delta_data_offset = lseek(pack->fd, 0, SEEK_CUR);
747 d7464085 2018-07-09 stsp if (delta_data_offset == -1)
748 638f9024 2019-05-13 stsp return got_error_from_errno("lseek");
751 d7464085 2018-07-09 stsp if (pack->map) {
752 d7464085 2018-07-09 stsp size_t mapoff = (size_t)delta_data_offset;
753 d7464085 2018-07-09 stsp err = got_inflate_to_mem_mmap(&delta_buf, &delta_len, pack->map,
754 d7464085 2018-07-09 stsp mapoff, pack->filesize - mapoff);
756 d7464085 2018-07-09 stsp return err;
759 d7464085 2018-07-09 stsp err = got_inflate_to_mem_fd(&delta_buf, &delta_len, pack->fd);
761 d7464085 2018-07-09 stsp return err;
764 c336f889 2018-07-23 stsp err = add_delta(deltas, delta_offset, tslen, delta_type, delta_size,
765 c336f889 2018-07-23 stsp delta_data_offset, delta_buf, delta_len);
767 1a35c1bc 2019-05-22 stsp return err;
769 c3703302 2018-01-23 stsp /* An offset delta must be in the same packfile. */
770 1a35c1bc 2019-05-22 stsp if (base_offset >= pack->filesize)
771 1a35c1bc 2019-05-22 stsp return got_error(GOT_ERR_PACK_OFFSET);
773 348f621c 2018-01-23 stsp err = parse_object_type_and_size(&base_type, &base_size, &base_tslen,
774 d7464085 2018-07-09 stsp pack, base_offset);
776 1a35c1bc 2019-05-22 stsp return err;
778 1a35c1bc 2019-05-22 stsp return resolve_delta_chain(deltas, packidx, pack, base_offset,
779 b0e2201a 2018-06-22 stsp base_tslen, base_type, base_size, recursion - 1);
782 c3703302 2018-01-23 stsp static const struct got_error *
783 c8ecd499 2018-09-09 stsp resolve_ref_delta(struct got_delta_chain *deltas, struct got_packidx *packidx,
784 c8ecd499 2018-09-09 stsp struct got_pack *pack, off_t delta_offset, size_t tslen, int delta_type,
785 c8ecd499 2018-09-09 stsp size_t delta_size, unsigned int recursion)
787 6b9c9673 2018-01-23 stsp const struct got_error *err;
788 6b9c9673 2018-01-23 stsp struct got_object_id id;
790 6b9c9673 2018-01-23 stsp off_t base_offset;
791 6b9c9673 2018-01-23 stsp uint8_t base_type;
792 6b9c9673 2018-01-23 stsp uint64_t base_size;
793 6b9c9673 2018-01-23 stsp size_t base_tslen;
794 bdd2fbb3 2018-02-11 stsp off_t delta_data_offset;
795 1a35c1bc 2019-05-22 stsp uint8_t *delta_buf;
796 a53d2f13 2018-03-17 stsp size_t delta_len;
798 d7464085 2018-07-09 stsp if (delta_offset >= pack->filesize)
799 d7464085 2018-07-09 stsp return got_error(GOT_ERR_PACK_OFFSET);
800 45202a8f 2018-07-11 stsp delta_data_offset = delta_offset + tslen;
801 d7464085 2018-07-09 stsp if (delta_data_offset >= pack->filesize)
802 d7464085 2018-07-09 stsp return got_error(GOT_ERR_PACK_OFFSET);
804 d7464085 2018-07-09 stsp if (pack->map == NULL) {
805 d7464085 2018-07-09 stsp delta_data_offset = lseek(pack->fd, 0, SEEK_CUR);
806 d7464085 2018-07-09 stsp if (delta_data_offset == -1)
807 638f9024 2019-05-13 stsp return got_error_from_errno("lseek");
810 d7464085 2018-07-09 stsp if (pack->map) {
811 45202a8f 2018-07-11 stsp size_t mapoff = (size_t)delta_data_offset;
812 d7464085 2018-07-09 stsp memcpy(&id, pack->map + mapoff, sizeof(id));
813 d7464085 2018-07-09 stsp mapoff += sizeof(id);
814 d7464085 2018-07-09 stsp err = got_inflate_to_mem_mmap(&delta_buf, &delta_len, pack->map,
815 45202a8f 2018-07-11 stsp mapoff, pack->filesize - mapoff);
817 1a35c1bc 2019-05-22 stsp return err;
819 d7464085 2018-07-09 stsp ssize_t n = read(pack->fd, &id, sizeof(id));
821 638f9024 2019-05-13 stsp return got_error_from_errno("read");
822 d7464085 2018-07-09 stsp if (n != sizeof(id))
823 d7464085 2018-07-09 stsp return got_error(GOT_ERR_BAD_PACKFILE);
824 d7464085 2018-07-09 stsp err = got_inflate_to_mem_fd(&delta_buf, &delta_len, pack->fd);
826 1a35c1bc 2019-05-22 stsp return err;
829 c336f889 2018-07-23 stsp err = add_delta(deltas, delta_offset, tslen, delta_type, delta_size,
830 c336f889 2018-07-23 stsp delta_data_offset, delta_buf, delta_len);
832 1a35c1bc 2019-05-22 stsp return err;
834 652b2703 2018-06-22 stsp /* Delta base must be in the same pack file. */
835 1510f469 2018-09-09 stsp idx = got_packidx_get_object_idx(packidx, &id);
836 1a35c1bc 2019-05-22 stsp if (idx == -1)
837 1a35c1bc 2019-05-22 stsp return got_error(GOT_ERR_BAD_PACKFILE);
839 6b9c9673 2018-01-23 stsp base_offset = get_object_offset(packidx, idx);
840 1a35c1bc 2019-05-22 stsp if (base_offset == (uint64_t)-1)
841 1a35c1bc 2019-05-22 stsp return got_error(GOT_ERR_BAD_PACKIDX);
843 1a35c1bc 2019-05-22 stsp if (base_offset >= pack->filesize)
844 1a35c1bc 2019-05-22 stsp return got_error(GOT_ERR_PACK_OFFSET);
846 6b9c9673 2018-01-23 stsp err = parse_object_type_and_size(&base_type, &base_size, &base_tslen,
847 d7464085 2018-07-09 stsp pack, base_offset);
849 1a35c1bc 2019-05-22 stsp return err;
851 1a35c1bc 2019-05-22 stsp return resolve_delta_chain(deltas, packidx, pack, base_offset,
852 0c048b15 2018-04-27 stsp base_tslen, base_type, base_size, recursion - 1);
855 6b9c9673 2018-01-23 stsp static const struct got_error *
856 c8ecd499 2018-09-09 stsp resolve_delta_chain(struct got_delta_chain *deltas, struct got_packidx *packidx,
857 c8ecd499 2018-09-09 stsp struct got_pack *pack, off_t delta_offset, size_t tslen, int delta_type,
858 c8ecd499 2018-09-09 stsp size_t delta_size, unsigned int recursion)
860 c3703302 2018-01-23 stsp const struct got_error *err = NULL;
862 5b7e13a7 2018-04-02 stsp if (--recursion == 0)
863 5b7e13a7 2018-04-02 stsp return got_error(GOT_ERR_RECURSION);
865 c3703302 2018-01-23 stsp switch (delta_type) {
866 4e8cda55 2018-01-19 stsp case GOT_OBJ_TYPE_COMMIT:
867 4e8cda55 2018-01-19 stsp case GOT_OBJ_TYPE_TREE:
868 4e8cda55 2018-01-19 stsp case GOT_OBJ_TYPE_BLOB:
869 4e8cda55 2018-01-19 stsp case GOT_OBJ_TYPE_TAG:
870 c3703302 2018-01-23 stsp /* Plain types are the final delta base. Recursion ends. */
871 c336f889 2018-07-23 stsp err = add_delta(deltas, delta_offset, tslen, delta_type,
872 c336f889 2018-07-23 stsp delta_size, 0, NULL, 0);
874 a3500804 2018-01-23 stsp case GOT_OBJ_TYPE_OFFSET_DELTA:
875 c8ecd499 2018-09-09 stsp err = resolve_offset_delta(deltas, packidx, pack,
876 b0e2201a 2018-06-22 stsp delta_offset, tslen, delta_type, delta_size, recursion - 1);
878 4e8cda55 2018-01-19 stsp case GOT_OBJ_TYPE_REF_DELTA:
879 c8ecd499 2018-09-09 stsp err = resolve_ref_delta(deltas, packidx, pack,
880 b0e2201a 2018-06-22 stsp delta_offset, tslen, delta_type, delta_size, recursion - 1);
883 4810de4a 2018-04-01 stsp return got_error(GOT_ERR_OBJ_TYPE);
886 96f5e8b3 2018-01-23 stsp return err;
889 96f5e8b3 2018-01-23 stsp static const struct got_error *
890 a98c62b1 2018-09-09 stsp open_delta_object(struct got_object **obj, struct got_packidx *packidx,
891 a98c62b1 2018-09-09 stsp struct got_pack *pack, struct got_object_id *id, off_t offset,
892 c59b3346 2018-09-11 stsp size_t tslen, int delta_type, size_t delta_size, int idx)
894 96f5e8b3 2018-01-23 stsp const struct got_error *err = NULL;
895 96f5e8b3 2018-01-23 stsp int resolved_type;
897 b107e67f 2018-01-19 stsp *obj = calloc(1, sizeof(**obj));
898 b107e67f 2018-01-19 stsp if (*obj == NULL)
899 638f9024 2019-05-13 stsp return got_error_from_errno("calloc");
901 96f5e8b3 2018-01-23 stsp (*obj)->flags = 0;
902 b107e67f 2018-01-19 stsp (*obj)->hdrlen = 0;
903 39e73dc9 2018-03-03 stsp (*obj)->size = 0; /* Not known because deltas aren't applied yet. */
904 106807b4 2018-09-15 stsp memcpy(&(*obj)->id, id, sizeof((*obj)->id));
905 cecc778e 2018-01-23 stsp (*obj)->pack_offset = offset + tslen;
907 1a35c1bc 2019-05-22 stsp SIMPLEQ_INIT(&(*obj)->deltas.entries);
908 1a35c1bc 2019-05-22 stsp (*obj)->flags |= GOT_OBJ_FLAG_DELTIFIED;
910 b0e2201a 2018-06-22 stsp (*obj)->path_packfile = strdup(pack->path_packfile);
911 96f5e8b3 2018-01-23 stsp if ((*obj)->path_packfile == NULL) {
912 638f9024 2019-05-13 stsp err = got_error_from_errno("strdup");
915 96f5e8b3 2018-01-23 stsp (*obj)->flags |= GOT_OBJ_FLAG_PACKED;
916 c59b3346 2018-09-11 stsp (*obj)->pack_idx = idx;
918 c8ecd499 2018-09-09 stsp err = resolve_delta_chain(&(*obj)->deltas, packidx, pack, offset,
919 b0e2201a 2018-06-22 stsp tslen, delta_type, delta_size, GOT_DELTA_CHAIN_RECURSION_MAX);
923 96f5e8b3 2018-01-23 stsp err = got_delta_chain_get_base_type(&resolved_type, &(*obj)->deltas);
926 96f5e8b3 2018-01-23 stsp (*obj)->type = resolved_type;
929 96f5e8b3 2018-01-23 stsp got_object_close(*obj);
930 96f5e8b3 2018-01-23 stsp *obj = NULL;
932 96f5e8b3 2018-01-23 stsp return err;
935 2090a03d 2018-09-09 stsp const struct got_error *
936 2090a03d 2018-09-09 stsp got_packfile_open_object(struct got_object **obj, struct got_pack *pack,
937 6fd11751 2018-06-04 stsp struct got_packidx *packidx, int idx, struct got_object_id *id)
939 a1fd68d8 2018-01-12 stsp const struct got_error *err = NULL;
940 a1fd68d8 2018-01-12 stsp off_t offset;
941 6c00b545 2018-01-17 stsp uint8_t type;
942 6c00b545 2018-01-17 stsp uint64_t size;
943 3ee5fc21 2018-01-17 stsp size_t tslen;
945 6c00b545 2018-01-17 stsp *obj = NULL;
947 a1fd68d8 2018-01-12 stsp offset = get_object_offset(packidx, idx);
948 a1fd68d8 2018-01-12 stsp if (offset == (uint64_t)-1)
949 a1fd68d8 2018-01-12 stsp return got_error(GOT_ERR_BAD_PACKIDX);
951 d7464085 2018-07-09 stsp err = parse_object_type_and_size(&type, &size, &tslen, pack, offset);
953 35c73765 2018-09-09 stsp return err;
955 6c00b545 2018-01-17 stsp switch (type) {
956 6c00b545 2018-01-17 stsp case GOT_OBJ_TYPE_COMMIT:
957 6c00b545 2018-01-17 stsp case GOT_OBJ_TYPE_TREE:
958 6c00b545 2018-01-17 stsp case GOT_OBJ_TYPE_BLOB:
959 d33fc9ef 2018-01-23 stsp case GOT_OBJ_TYPE_TAG:
960 35c73765 2018-09-09 stsp err = open_plain_object(obj, pack->path_packfile, id, type,
961 c59b3346 2018-09-11 stsp offset + tslen, size, idx);
963 b107e67f 2018-01-19 stsp case GOT_OBJ_TYPE_OFFSET_DELTA:
964 a48db7e5 2018-01-23 stsp case GOT_OBJ_TYPE_REF_DELTA:
965 a98c62b1 2018-09-09 stsp err = open_delta_object(obj, packidx, pack, id, offset,
966 c59b3346 2018-09-11 stsp tslen, type, size, idx);
969 4810de4a 2018-04-01 stsp err = got_error(GOT_ERR_OBJ_TYPE);
973 3ee5fc21 2018-01-17 stsp return err;
976 efd2a263 2018-01-19 stsp static const struct got_error *
977 40426839 2018-03-17 stsp get_delta_chain_max_size(uint64_t *max_size, struct got_delta_chain *deltas)
979 22484865 2018-03-13 stsp struct got_delta *delta;
980 22484865 2018-03-13 stsp uint64_t base_size = 0, result_size = 0;
982 22484865 2018-03-13 stsp *max_size = 0;
983 22484865 2018-03-13 stsp SIMPLEQ_FOREACH(delta, &deltas->entries, entry) {
984 22484865 2018-03-13 stsp /* Plain object types are the delta base. */
985 22484865 2018-03-13 stsp if (delta->type != GOT_OBJ_TYPE_COMMIT &&
986 22484865 2018-03-13 stsp delta->type != GOT_OBJ_TYPE_TREE &&
987 22484865 2018-03-13 stsp delta->type != GOT_OBJ_TYPE_BLOB &&
988 22484865 2018-03-13 stsp delta->type != GOT_OBJ_TYPE_TAG) {
989 22484865 2018-03-13 stsp const struct got_error *err;
990 a53d2f13 2018-03-17 stsp err = got_delta_get_sizes(&base_size, &result_size,
991 a53d2f13 2018-03-17 stsp delta->delta_buf, delta->delta_len);
993 22484865 2018-03-13 stsp return err;
995 22484865 2018-03-13 stsp base_size = delta->size;
996 22484865 2018-03-13 stsp if (base_size > *max_size)
997 22484865 2018-03-13 stsp *max_size = base_size;
998 22484865 2018-03-13 stsp if (result_size > *max_size)
999 22484865 2018-03-13 stsp *max_size = result_size;
1002 9feb4ff2 2018-03-14 stsp return NULL;
1005 ac544f8c 2019-01-13 stsp const struct got_error *
1006 85a703fa 2019-01-13 stsp got_pack_get_max_delta_object_size(uint64_t *size, struct got_object *obj)
1008 85a703fa 2019-01-13 stsp if ((obj->flags & GOT_OBJ_FLAG_DELTIFIED) == 0)
1009 85a703fa 2019-01-13 stsp return got_error(GOT_ERR_OBJ_TYPE);
1011 ac544f8c 2019-01-13 stsp return get_delta_chain_max_size(size, &obj->deltas);
1014 22484865 2018-03-13 stsp static const struct got_error *
1015 b29656e2 2018-03-16 stsp dump_delta_chain_to_file(size_t *result_size, struct got_delta_chain *deltas,
1016 3840f4c9 2018-09-12 stsp struct got_pack *pack, FILE *outfile, FILE *base_file, FILE *accum_file)
1018 efd2a263 2018-01-19 stsp const struct got_error *err = NULL;
1019 6691714a 2018-01-23 stsp struct got_delta *delta;
1020 8628c62d 2018-03-15 stsp uint8_t *base_buf = NULL, *accum_buf = NULL;
1021 34fca9c3 2018-11-11 stsp size_t base_bufsz = 0, accum_size = 0;
1022 22484865 2018-03-13 stsp uint64_t max_size;
1023 6691714a 2018-01-23 stsp int n = 0;
1025 b29656e2 2018-03-16 stsp *result_size = 0;
1027 710bb5ca 2018-01-23 stsp if (SIMPLEQ_EMPTY(&deltas->entries))
1028 6691714a 2018-01-23 stsp return got_error(GOT_ERR_BAD_DELTA_CHAIN);
1030 8628c62d 2018-03-15 stsp /* We process small enough files entirely in memory for speed. */
1031 40426839 2018-03-17 stsp err = get_delta_chain_max_size(&max_size, deltas);
1033 22484865 2018-03-13 stsp return err;
1034 8628c62d 2018-03-15 stsp if (max_size < GOT_DELTA_RESULT_SIZE_CACHED_MAX) {
1035 8628c62d 2018-03-15 stsp accum_buf = malloc(max_size);
1036 8628c62d 2018-03-15 stsp if (accum_buf == NULL)
1037 638f9024 2019-05-13 stsp return got_error_from_errno("malloc");
1038 3840f4c9 2018-09-12 stsp base_file = NULL;
1039 3840f4c9 2018-09-12 stsp accum_file = NULL;
1042 6691714a 2018-01-23 stsp /* Deltas are ordered in ascending order. */
1043 710bb5ca 2018-01-23 stsp SIMPLEQ_FOREACH(delta, &deltas->entries, entry) {
1044 a6b158cc 2018-02-11 stsp if (n == 0) {
1045 34fca9c3 2018-11-11 stsp size_t mapoff;
1046 0c048b15 2018-04-27 stsp off_t delta_data_offset;
1048 a6b158cc 2018-02-11 stsp /* Plain object types are the delta base. */
1049 a6b158cc 2018-02-11 stsp if (delta->type != GOT_OBJ_TYPE_COMMIT &&
1050 a6b158cc 2018-02-11 stsp delta->type != GOT_OBJ_TYPE_TREE &&
1051 a6b158cc 2018-02-11 stsp delta->type != GOT_OBJ_TYPE_BLOB &&
1052 a6b158cc 2018-02-11 stsp delta->type != GOT_OBJ_TYPE_TAG) {
1053 72eb3431 2018-04-01 stsp err = got_error(GOT_ERR_BAD_DELTA_CHAIN);
1054 72eb3431 2018-04-01 stsp goto done;
1057 0c048b15 2018-04-27 stsp delta_data_offset = delta->offset + delta->tslen;
1058 0c048b15 2018-04-27 stsp if (delta_data_offset >= pack->filesize) {
1059 0c048b15 2018-04-27 stsp err = got_error(GOT_ERR_PACK_OFFSET);
1060 0c048b15 2018-04-27 stsp goto done;
1062 d7464085 2018-07-09 stsp if (pack->map == NULL) {
1063 d7464085 2018-07-09 stsp if (lseek(pack->fd, delta_data_offset, SEEK_SET)
1065 638f9024 2019-05-13 stsp err = got_error_from_errno("lseek");
1066 d7464085 2018-07-09 stsp goto done;
1069 d7464085 2018-07-09 stsp if (base_file) {
1070 d7464085 2018-07-09 stsp if (pack->map) {
1071 d7464085 2018-07-09 stsp mapoff = (size_t)delta_data_offset;
1072 d7464085 2018-07-09 stsp err = got_inflate_to_file_mmap(
1073 34fca9c3 2018-11-11 stsp &base_bufsz, pack->map, mapoff,
1074 d7464085 2018-07-09 stsp pack->filesize - mapoff, base_file);
1076 34fca9c3 2018-11-11 stsp err = got_inflate_to_file_fd(
1077 34fca9c3 2018-11-11 stsp &base_bufsz, pack->fd, base_file);
1079 d7464085 2018-07-09 stsp if (pack->map) {
1080 d7464085 2018-07-09 stsp mapoff = (size_t)delta_data_offset;
1081 d7464085 2018-07-09 stsp err = got_inflate_to_mem_mmap(&base_buf,
1082 34fca9c3 2018-11-11 stsp &base_bufsz, pack->map, mapoff,
1083 d7464085 2018-07-09 stsp pack->filesize - mapoff);
1085 d7464085 2018-07-09 stsp err = got_inflate_to_mem_fd(&base_buf,
1086 34fca9c3 2018-11-11 stsp &base_bufsz, pack->fd);
1089 a6b158cc 2018-02-11 stsp goto done;
1091 8628c62d 2018-03-15 stsp if (base_file)
1092 8628c62d 2018-03-15 stsp rewind(base_file);
1096 8628c62d 2018-03-15 stsp if (base_buf) {
1097 34fca9c3 2018-11-11 stsp err = got_delta_apply_in_mem(base_buf, base_bufsz,
1098 34fca9c3 2018-11-11 stsp delta->delta_buf, delta->delta_len, accum_buf,
1099 34fca9c3 2018-11-11 stsp &accum_size, max_size);
1102 a53d2f13 2018-03-17 stsp err = got_delta_apply(base_file, delta->delta_buf,
1103 a53d2f13 2018-03-17 stsp delta->delta_len,
1104 8628c62d 2018-03-15 stsp /* Final delta application writes to output file. */
1105 b29656e2 2018-03-16 stsp ++n < deltas->nentries ? accum_file : outfile,
1106 b29656e2 2018-03-16 stsp &accum_size);
1109 6691714a 2018-01-23 stsp goto done;
1111 710bb5ca 2018-01-23 stsp if (n < deltas->nentries) {
1112 6691714a 2018-01-23 stsp /* Accumulated delta becomes the new base. */
1113 8628c62d 2018-03-15 stsp if (base_buf) {
1114 8628c62d 2018-03-15 stsp uint8_t *tmp = accum_buf;
1116 34fca9c3 2018-11-11 stsp * Base buffer switches roles with accumulation
1117 34fca9c3 2018-11-11 stsp * buffer. Ensure it can hold the largest
1118 34fca9c3 2018-11-11 stsp * result in the delta chain. The initial
1119 34fca9c3 2018-11-11 stsp * allocation might have been smaller.
1121 34fca9c3 2018-11-11 stsp if (base_bufsz < max_size) {
1122 34fca9c3 2018-11-11 stsp uint8_t *p;
1123 34fca9c3 2018-11-11 stsp p = reallocarray(base_buf, 1, max_size);
1124 34fca9c3 2018-11-11 stsp if (p == NULL) {
1125 638f9024 2019-05-13 stsp err = got_error_from_errno(
1126 230a42bd 2019-05-11 jcs "reallocarray");
1127 34fca9c3 2018-11-11 stsp goto done;
1129 34fca9c3 2018-11-11 stsp base_buf = p;
1130 34fca9c3 2018-11-11 stsp base_bufsz = max_size;
1132 8628c62d 2018-03-15 stsp accum_buf = base_buf;
1133 8628c62d 2018-03-15 stsp base_buf = tmp;
1135 8628c62d 2018-03-15 stsp FILE *tmp = accum_file;
1136 8628c62d 2018-03-15 stsp accum_file = base_file;
1137 8628c62d 2018-03-15 stsp base_file = tmp;
1138 8628c62d 2018-03-15 stsp rewind(base_file);
1139 8628c62d 2018-03-15 stsp rewind(accum_file);
1145 8628c62d 2018-03-15 stsp free(base_buf);
1146 8628c62d 2018-03-15 stsp if (accum_buf) {
1147 8628c62d 2018-03-15 stsp size_t len = fwrite(accum_buf, 1, accum_size, outfile);
1148 8628c62d 2018-03-15 stsp free(accum_buf);
1149 8628c62d 2018-03-15 stsp if (len != accum_size)
1150 673702af 2018-07-23 stsp err = got_ferror(outfile, GOT_ERR_IO);
1152 6691714a 2018-01-23 stsp rewind(outfile);
1153 b29656e2 2018-03-16 stsp if (err == NULL)
1154 b29656e2 2018-03-16 stsp *result_size = accum_size;
1155 e0ab43e7 2018-03-16 stsp return err;
1158 e0ab43e7 2018-03-16 stsp static const struct got_error *
1159 e0ab43e7 2018-03-16 stsp dump_delta_chain_to_mem(uint8_t **outbuf, size_t *outlen,
1160 48095039 2018-09-09 stsp struct got_delta_chain *deltas, struct got_pack *pack)
1162 e0ab43e7 2018-03-16 stsp const struct got_error *err = NULL;
1163 e0ab43e7 2018-03-16 stsp struct got_delta *delta;
1164 e0ab43e7 2018-03-16 stsp uint8_t *base_buf = NULL, *accum_buf = NULL;
1165 34fca9c3 2018-11-11 stsp size_t base_bufsz = 0, accum_size = 0;
1166 e0ab43e7 2018-03-16 stsp uint64_t max_size;
1167 e0ab43e7 2018-03-16 stsp int n = 0;
1169 e0ab43e7 2018-03-16 stsp *outbuf = NULL;
1170 e0ab43e7 2018-03-16 stsp *outlen = 0;
1172 e0ab43e7 2018-03-16 stsp if (SIMPLEQ_EMPTY(&deltas->entries))
1173 e0ab43e7 2018-03-16 stsp return got_error(GOT_ERR_BAD_DELTA_CHAIN);
1175 40426839 2018-03-17 stsp err = get_delta_chain_max_size(&max_size, deltas);
1177 e0ab43e7 2018-03-16 stsp return err;
1178 e0ab43e7 2018-03-16 stsp accum_buf = malloc(max_size);
1179 e0ab43e7 2018-03-16 stsp if (accum_buf == NULL)
1180 638f9024 2019-05-13 stsp return got_error_from_errno("malloc");
1182 e0ab43e7 2018-03-16 stsp /* Deltas are ordered in ascending order. */
1183 e0ab43e7 2018-03-16 stsp SIMPLEQ_FOREACH(delta, &deltas->entries, entry) {
1184 e0ab43e7 2018-03-16 stsp if (n == 0) {
1185 0c048b15 2018-04-27 stsp size_t delta_data_offset;
1187 e0ab43e7 2018-03-16 stsp /* Plain object types are the delta base. */
1188 e0ab43e7 2018-03-16 stsp if (delta->type != GOT_OBJ_TYPE_COMMIT &&
1189 e0ab43e7 2018-03-16 stsp delta->type != GOT_OBJ_TYPE_TREE &&
1190 e0ab43e7 2018-03-16 stsp delta->type != GOT_OBJ_TYPE_BLOB &&
1191 e0ab43e7 2018-03-16 stsp delta->type != GOT_OBJ_TYPE_TAG) {
1192 72eb3431 2018-04-01 stsp err = got_error(GOT_ERR_BAD_DELTA_CHAIN);
1193 72eb3431 2018-04-01 stsp goto done;
1196 0c048b15 2018-04-27 stsp delta_data_offset = delta->offset + delta->tslen;
1197 0c048b15 2018-04-27 stsp if (delta_data_offset >= pack->filesize) {
1198 0c048b15 2018-04-27 stsp err = got_error(GOT_ERR_PACK_OFFSET);
1199 0c048b15 2018-04-27 stsp goto done;
1201 d7464085 2018-07-09 stsp if (pack->map) {
1202 d7464085 2018-07-09 stsp size_t mapoff = (size_t)delta_data_offset;
1203 d7464085 2018-07-09 stsp err = got_inflate_to_mem_mmap(&base_buf,
1204 34fca9c3 2018-11-11 stsp &base_bufsz, pack->map, mapoff,
1205 d7464085 2018-07-09 stsp pack->filesize - mapoff);
1207 d7464085 2018-07-09 stsp if (lseek(pack->fd, delta_data_offset, SEEK_SET)
1209 638f9024 2019-05-13 stsp err = got_error_from_errno("lseek");
1210 d7464085 2018-07-09 stsp goto done;
1212 d7464085 2018-07-09 stsp err = got_inflate_to_mem_fd(&base_buf,
1213 34fca9c3 2018-11-11 stsp &base_bufsz, pack->fd);
1216 d7464085 2018-07-09 stsp goto done;
1221 34fca9c3 2018-11-11 stsp err = got_delta_apply_in_mem(base_buf, base_bufsz,
1222 34fca9c3 2018-11-11 stsp delta->delta_buf, delta->delta_len, accum_buf,
1223 34fca9c3 2018-11-11 stsp &accum_size, max_size);
1226 e0ab43e7 2018-03-16 stsp goto done;
1228 e0ab43e7 2018-03-16 stsp if (n < deltas->nentries) {
1229 e0ab43e7 2018-03-16 stsp /* Accumulated delta becomes the new base. */
1230 e0ab43e7 2018-03-16 stsp uint8_t *tmp = accum_buf;
1232 34fca9c3 2018-11-11 stsp * Base buffer switches roles with accumulation buffer.
1233 34fca9c3 2018-11-11 stsp * Ensure it can hold the largest result in the delta
1234 34fca9c3 2018-11-11 stsp * chain. Initial allocation might have been smaller.
1236 34fca9c3 2018-11-11 stsp if (base_bufsz < max_size) {
1237 34fca9c3 2018-11-11 stsp uint8_t *p;
1238 34fca9c3 2018-11-11 stsp p = reallocarray(base_buf, 1, max_size);
1239 34fca9c3 2018-11-11 stsp if (p == NULL) {
1240 638f9024 2019-05-13 stsp err = got_error_from_errno(
1241 230a42bd 2019-05-11 jcs "reallocarray");
1242 34fca9c3 2018-11-11 stsp goto done;
1244 34fca9c3 2018-11-11 stsp base_buf = p;
1245 34fca9c3 2018-11-11 stsp base_bufsz = max_size;
1247 e0ab43e7 2018-03-16 stsp accum_buf = base_buf;
1248 e0ab43e7 2018-03-16 stsp base_buf = tmp;
1253 e0ab43e7 2018-03-16 stsp free(base_buf);
1254 e0ab43e7 2018-03-16 stsp if (err) {
1255 e0ab43e7 2018-03-16 stsp free(accum_buf);
1256 e0ab43e7 2018-03-16 stsp *outbuf = NULL;
1257 e0ab43e7 2018-03-16 stsp *outlen = 0;
1259 e0ab43e7 2018-03-16 stsp *outbuf = accum_buf;
1260 e0ab43e7 2018-03-16 stsp *outlen = accum_size;
1262 efd2a263 2018-01-19 stsp return err;
1265 3ee5fc21 2018-01-17 stsp const struct got_error *
1266 24140570 2018-09-09 stsp got_packfile_extract_object(struct got_pack *pack, struct got_object *obj,
1267 3840f4c9 2018-09-12 stsp FILE *outfile, FILE *base_file, FILE *accum_file)
1269 3ee5fc21 2018-01-17 stsp const struct got_error *err = NULL;
1271 3ee5fc21 2018-01-17 stsp if ((obj->flags & GOT_OBJ_FLAG_PACKED) == 0)
1272 3ee5fc21 2018-01-17 stsp return got_error(GOT_ERR_OBJ_NOT_PACKED);
1274 ef2bccd9 2018-03-16 stsp if ((obj->flags & GOT_OBJ_FLAG_DELTIFIED) == 0) {
1275 24140570 2018-09-09 stsp if (obj->pack_offset >= pack->filesize)
1276 24140570 2018-09-09 stsp return got_error(GOT_ERR_PACK_OFFSET);
1278 d7464085 2018-07-09 stsp if (pack->map) {
1279 d7464085 2018-07-09 stsp size_t mapoff = (size_t)obj->pack_offset;
1280 d7464085 2018-07-09 stsp err = got_inflate_to_file_mmap(&obj->size, pack->map,
1281 24140570 2018-09-09 stsp mapoff, pack->filesize - mapoff, outfile);
1283 24140570 2018-09-09 stsp if (lseek(pack->fd, obj->pack_offset, SEEK_SET) == -1)
1284 638f9024 2019-05-13 stsp return got_error_from_errno("lseek");
1285 24140570 2018-09-09 stsp err = got_inflate_to_file_fd(&obj->size, pack->fd,
1289 2ce68b2f 2018-09-09 stsp err = dump_delta_chain_to_file(&obj->size, &obj->deltas, pack,
1290 3840f4c9 2018-09-12 stsp outfile, base_file, accum_file);
1292 a1fd68d8 2018-01-12 stsp return err;
1295 e0ab43e7 2018-03-16 stsp const struct got_error *
1296 e0ab43e7 2018-03-16 stsp got_packfile_extract_object_to_mem(uint8_t **buf, size_t *len,
1297 7e212e3d 2018-09-09 stsp struct got_object *obj, struct got_pack *pack)
1299 e0ab43e7 2018-03-16 stsp const struct got_error *err = NULL;
1301 e0ab43e7 2018-03-16 stsp if ((obj->flags & GOT_OBJ_FLAG_PACKED) == 0)
1302 e0ab43e7 2018-03-16 stsp return got_error(GOT_ERR_OBJ_NOT_PACKED);
1304 48095039 2018-09-09 stsp if ((obj->flags & GOT_OBJ_FLAG_DELTIFIED) == 0) {
1305 7e212e3d 2018-09-09 stsp if (obj->pack_offset >= pack->filesize)
1306 7e212e3d 2018-09-09 stsp return got_error(GOT_ERR_PACK_OFFSET);
1307 d7464085 2018-07-09 stsp if (pack->map) {
1308 d7464085 2018-07-09 stsp size_t mapoff = (size_t)obj->pack_offset;
1309 d7464085 2018-07-09 stsp err = got_inflate_to_mem_mmap(buf, len, pack->map,
1310 d7464085 2018-07-09 stsp mapoff, pack->filesize - mapoff);
1312 7e212e3d 2018-09-09 stsp if (lseek(pack->fd, obj->pack_offset, SEEK_SET) == -1)
1313 638f9024 2019-05-13 stsp return got_error_from_errno("lseek");
1314 d7464085 2018-07-09 stsp err = got_inflate_to_mem_fd(buf, len, pack->fd);
1317 48095039 2018-09-09 stsp err = dump_delta_chain_to_mem(buf, len, &obj->deltas, pack);
1319 e0ab43e7 2018-03-16 stsp return err;
