2 c48c4a9c 2018-03-11 stsp * Copyright (c) 2018 Stefan Sperling <stsp@openbsd.org>
4 c48c4a9c 2018-03-11 stsp * Permission to use, copy, modify, and distribute this software for any
5 c48c4a9c 2018-03-11 stsp * purpose with or without fee is hereby granted, provided that the above
6 c48c4a9c 2018-03-11 stsp * copyright notice and this permission notice appear in all copies.
8 c48c4a9c 2018-03-11 stsp * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 c48c4a9c 2018-03-11 stsp * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 c48c4a9c 2018-03-11 stsp * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 c48c4a9c 2018-03-11 stsp * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 c48c4a9c 2018-03-11 stsp * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 c48c4a9c 2018-03-11 stsp * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 c48c4a9c 2018-03-11 stsp * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 c48c4a9c 2018-03-11 stsp #include <sys/queue.h>
18 133d2798 2019-01-08 stsp #include <sys/tree.h>
19 c48c4a9c 2018-03-11 stsp #include <sys/stat.h>
21 c48c4a9c 2018-03-11 stsp #include <stdio.h>
22 c48c4a9c 2018-03-11 stsp #include <stdlib.h>
23 c48c4a9c 2018-03-11 stsp #include <string.h>
24 c48c4a9c 2018-03-11 stsp #include <sha1.h>
25 c34b20a2 2018-03-12 stsp #include <endian.h>
26 133d2798 2019-01-08 stsp #include <limits.h>
28 c48c4a9c 2018-03-11 stsp #include "got_error.h"
29 8da9e5f4 2019-01-12 stsp #include "got_object.h"
31 133d2798 2019-01-08 stsp #include "got_lib_path.h"
32 718b3ab0 2018-03-17 stsp #include "got_lib_fileindex.h"
34 133d2798 2019-01-08 stsp struct got_fileindex {
35 133d2798 2019-01-08 stsp struct got_fileindex_tree entries;
36 133d2798 2019-01-08 stsp int nentries;
37 133d2798 2019-01-08 stsp #define GOT_FILEIDX_MAX_ENTRIES INT_MAX
40 c48c4a9c 2018-03-11 stsp const struct got_error *
41 51514078 2018-12-25 stsp got_fileindex_entry_update(struct got_fileindex_entry *entry,
42 51514078 2018-12-25 stsp const char *ondisk_path, uint8_t *blob_sha1, uint8_t *commit_sha1)
44 c48c4a9c 2018-03-11 stsp struct stat sb;
46 c34b20a2 2018-03-12 stsp if (lstat(ondisk_path, &sb) != 0)
47 c48c4a9c 2018-03-11 stsp return got_error_from_errno();
49 51514078 2018-12-25 stsp entry->ctime_sec = sb.st_ctime;
50 51514078 2018-12-25 stsp entry->ctime_nsec = sb.st_ctimensec;
51 51514078 2018-12-25 stsp entry->mtime_sec = sb.st_mtime;
52 51514078 2018-12-25 stsp entry->mtime_nsec = sb.st_mtimensec;
53 51514078 2018-12-25 stsp entry->uid = sb.st_uid;
54 51514078 2018-12-25 stsp entry->gid = sb.st_gid;
55 51514078 2018-12-25 stsp entry->size = (sb.st_size & 0xffffffff);
56 51514078 2018-12-25 stsp if (sb.st_mode & S_IFLNK)
57 51514078 2018-12-25 stsp entry->mode = GOT_INDEX_ENTRY_MODE_SYMLINK;
59 51514078 2018-12-25 stsp entry->mode = GOT_INDEX_ENTRY_MODE_REGULAR_FILE;
60 51514078 2018-12-25 stsp entry->mode |= ((sb.st_mode & (S_IRWXU | S_IRWXG | S_IRWXO)) <<
61 51514078 2018-12-25 stsp GOT_INDEX_ENTRY_MODE_PERMS_SHIFT);
62 51514078 2018-12-25 stsp memcpy(entry->blob_sha1, blob_sha1, SHA1_DIGEST_LENGTH);
63 51514078 2018-12-25 stsp memcpy(entry->commit_sha1, commit_sha1, SHA1_DIGEST_LENGTH);
65 51514078 2018-12-25 stsp return NULL;
68 51514078 2018-12-25 stsp const struct got_error *
69 51514078 2018-12-25 stsp got_fileindex_entry_alloc(struct got_fileindex_entry **entry,
70 51514078 2018-12-25 stsp const char *ondisk_path, const char *relpath, uint8_t *blob_sha1,
71 51514078 2018-12-25 stsp uint8_t *commit_sha1)
75 c48c4a9c 2018-03-11 stsp *entry = calloc(1, sizeof(**entry));
76 c48c4a9c 2018-03-11 stsp if (*entry == NULL)
77 0a585a0d 2018-03-17 stsp return got_error_from_errno();
79 c34b20a2 2018-03-12 stsp (*entry)->path = strdup(relpath);
80 c48c4a9c 2018-03-11 stsp if ((*entry)->path == NULL) {
81 0a585a0d 2018-03-17 stsp const struct got_error *err = got_error_from_errno();
82 c48c4a9c 2018-03-11 stsp free(*entry);
83 c48c4a9c 2018-03-11 stsp *entry = NULL;
87 c34b20a2 2018-03-12 stsp len = strlen(relpath);
88 c48c4a9c 2018-03-11 stsp if (len > GOT_INDEX_ENTRY_F_PATH_LEN)
89 c48c4a9c 2018-03-11 stsp len = GOT_INDEX_ENTRY_F_PATH_LEN;
90 c48c4a9c 2018-03-11 stsp (*entry)->flags |= len;
92 51514078 2018-12-25 stsp return got_fileindex_entry_update(*entry, ondisk_path, blob_sha1,
93 51514078 2018-12-25 stsp commit_sha1);
97 7426bbfd 2018-12-24 stsp got_fileindex_entry_free(struct got_fileindex_entry *entry)
99 c48c4a9c 2018-03-11 stsp free(entry->path);
100 c48c4a9c 2018-03-11 stsp free(entry);
103 50952927 2019-01-12 stsp static const struct got_error *
104 50952927 2019-01-12 stsp add_entry(struct got_fileindex *fileindex, struct got_fileindex_entry *entry)
106 133d2798 2019-01-08 stsp if (fileindex->nentries >= GOT_FILEIDX_MAX_ENTRIES)
107 133d2798 2019-01-08 stsp return got_error(GOT_ERR_NO_SPACE);
109 133d2798 2019-01-08 stsp RB_INSERT(got_fileindex_tree, &fileindex->entries, entry);
110 133d2798 2019-01-08 stsp fileindex->nentries++;
111 133d2798 2019-01-08 stsp return NULL;
114 50952927 2019-01-12 stsp const struct got_error *
115 50952927 2019-01-12 stsp got_fileindex_entry_add(struct got_fileindex *fileindex,
116 50952927 2019-01-12 stsp struct got_fileindex_entry *entry)
118 50952927 2019-01-12 stsp /* Flag this entry until it gets written out to disk. */
119 50952927 2019-01-12 stsp entry->flags |= GOT_INDEX_ENTRY_F_INTENT_TO_ADD;
121 50952927 2019-01-12 stsp return add_entry(fileindex, entry);
125 512f0d0e 2019-01-02 stsp got_fileindex_entry_remove(struct got_fileindex *fileindex,
126 512f0d0e 2019-01-02 stsp struct got_fileindex_entry *entry)
128 133d2798 2019-01-08 stsp RB_REMOVE(got_fileindex_tree, &fileindex->entries, entry);
129 133d2798 2019-01-08 stsp fileindex->nentries--;
132 51514078 2018-12-25 stsp struct got_fileindex_entry *
133 51514078 2018-12-25 stsp got_fileindex_entry_get(struct got_fileindex *fileindex, const char *path)
135 133d2798 2019-01-08 stsp struct got_fileindex_entry key;
136 133d2798 2019-01-08 stsp memset(&key, 0, sizeof(key));
137 133d2798 2019-01-08 stsp key.path = (char *)path;
138 133d2798 2019-01-08 stsp return RB_FIND(got_fileindex_tree, &fileindex->entries, &key);
141 512f0d0e 2019-01-02 stsp const struct got_error *
142 e1ed7f77 2019-01-06 stsp got_fileindex_for_each_entry_safe(struct got_fileindex *fileindex,
143 b504a804 2019-01-08 stsp got_fileindex_cb cb, void *cb_arg)
145 133d2798 2019-01-08 stsp const struct got_error *err;
146 133d2798 2019-01-08 stsp struct got_fileindex_entry *entry, *tmp;
148 133d2798 2019-01-08 stsp RB_FOREACH_SAFE(entry, got_fileindex_tree, &fileindex->entries, tmp) {
149 133d2798 2019-01-08 stsp err = (*cb)(cb_arg, entry);
151 133d2798 2019-01-08 stsp return err;
153 b504a804 2019-01-08 stsp return NULL;
156 133d2798 2019-01-08 stsp struct got_fileindex *
157 133d2798 2019-01-08 stsp got_fileindex_alloc(void)
159 133d2798 2019-01-08 stsp struct got_fileindex *fileindex;
161 133d2798 2019-01-08 stsp fileindex = calloc(1, sizeof(*fileindex));
162 133d2798 2019-01-08 stsp if (fileindex == NULL)
163 133d2798 2019-01-08 stsp return NULL;
165 133d2798 2019-01-08 stsp RB_INIT(&fileindex->entries);
166 133d2798 2019-01-08 stsp return fileindex;
170 7426bbfd 2018-12-24 stsp got_fileindex_free(struct got_fileindex *fileindex)
172 133d2798 2019-01-08 stsp struct got_fileindex_entry *entry;
174 133d2798 2019-01-08 stsp while ((entry = RB_MIN(got_fileindex_tree, &fileindex->entries))) {
175 133d2798 2019-01-08 stsp RB_REMOVE(got_fileindex_tree, &fileindex->entries, entry);
176 133d2798 2019-01-08 stsp got_fileindex_entry_free(entry);
178 9d31a1d8 2018-03-11 stsp free(fileindex);
181 c34b20a2 2018-03-12 stsp static const struct got_error *
182 c34b20a2 2018-03-12 stsp write_fileindex_val64(SHA1_CTX *ctx, uint64_t val, FILE *outfile)
186 c34b20a2 2018-03-12 stsp val = htobe64(val);
187 3fe2daf1 2018-12-24 stsp SHA1Update(ctx, (uint8_t *)&val, sizeof(val));
188 3fe2daf1 2018-12-24 stsp n = fwrite(&val, 1, sizeof(val), outfile);
189 c34b20a2 2018-03-12 stsp if (n != sizeof(val))
190 c34b20a2 2018-03-12 stsp return got_ferror(outfile, GOT_ERR_IO);
191 c34b20a2 2018-03-12 stsp return NULL;
194 c34b20a2 2018-03-12 stsp static const struct got_error *
195 c34b20a2 2018-03-12 stsp write_fileindex_val32(SHA1_CTX *ctx, uint32_t val, FILE *outfile)
199 c34b20a2 2018-03-12 stsp val = htobe32(val);
200 3fe2daf1 2018-12-24 stsp SHA1Update(ctx, (uint8_t *)&val, sizeof(val));
201 3fe2daf1 2018-12-24 stsp n = fwrite(&val, 1, sizeof(val), outfile);
202 c34b20a2 2018-03-12 stsp if (n != sizeof(val))
203 c34b20a2 2018-03-12 stsp return got_ferror(outfile, GOT_ERR_IO);
204 c34b20a2 2018-03-12 stsp return NULL;
207 c34b20a2 2018-03-12 stsp static const struct got_error *
208 c34b20a2 2018-03-12 stsp write_fileindex_val16(SHA1_CTX *ctx, uint16_t val, FILE *outfile)
212 c34b20a2 2018-03-12 stsp val = htobe16(val);
213 3fe2daf1 2018-12-24 stsp SHA1Update(ctx, (uint8_t *)&val, sizeof(val));
214 3fe2daf1 2018-12-24 stsp n = fwrite(&val, 1, sizeof(val), outfile);
215 c34b20a2 2018-03-12 stsp if (n != sizeof(val))
216 c34b20a2 2018-03-12 stsp return got_ferror(outfile, GOT_ERR_IO);
217 c34b20a2 2018-03-12 stsp return NULL;
220 c34b20a2 2018-03-12 stsp static const struct got_error *
221 c34b20a2 2018-03-12 stsp write_fileindex_path(SHA1_CTX *ctx, const char *path, FILE *outfile)
223 3c5b70f2 2018-12-27 stsp size_t n, len, pad = 0;
224 c34b20a2 2018-03-12 stsp static const uint8_t zero[8] = { 0 };
226 c34b20a2 2018-03-12 stsp len = strlen(path);
227 3c5b70f2 2018-12-27 stsp while ((len + pad) % 8 != 0)
229 3c5b70f2 2018-12-27 stsp if (pad == 0)
230 3c5b70f2 2018-12-27 stsp pad = 8; /* NUL-terminate */
232 c34b20a2 2018-03-12 stsp SHA1Update(ctx, path, len);
233 c34b20a2 2018-03-12 stsp n = fwrite(path, 1, len, outfile);
234 c34b20a2 2018-03-12 stsp if (n != len)
235 c34b20a2 2018-03-12 stsp return got_ferror(outfile, GOT_ERR_IO);
236 c34b20a2 2018-03-12 stsp SHA1Update(ctx, zero, pad);
237 c34b20a2 2018-03-12 stsp n = fwrite(zero, 1, pad, outfile);
238 c34b20a2 2018-03-12 stsp if (n != pad)
239 c34b20a2 2018-03-12 stsp return got_ferror(outfile, GOT_ERR_IO);
240 c34b20a2 2018-03-12 stsp return NULL;
243 c34b20a2 2018-03-12 stsp static const struct got_error *
244 c34b20a2 2018-03-12 stsp write_fileindex_entry(SHA1_CTX *ctx, struct got_fileindex_entry *entry,
245 c34b20a2 2018-03-12 stsp FILE *outfile)
247 c34b20a2 2018-03-12 stsp const struct got_error *err;
250 c34b20a2 2018-03-12 stsp err = write_fileindex_val64(ctx, entry->ctime_sec, outfile);
252 c34b20a2 2018-03-12 stsp return err;
253 c34b20a2 2018-03-12 stsp err = write_fileindex_val64(ctx, entry->ctime_nsec, outfile);
255 c34b20a2 2018-03-12 stsp return err;
256 c34b20a2 2018-03-12 stsp err = write_fileindex_val64(ctx, entry->mtime_sec, outfile);
258 c34b20a2 2018-03-12 stsp return err;
259 c34b20a2 2018-03-12 stsp err = write_fileindex_val64(ctx, entry->mtime_nsec, outfile);
261 c34b20a2 2018-03-12 stsp return err;
263 c34b20a2 2018-03-12 stsp err = write_fileindex_val32(ctx, entry->uid, outfile);
265 c34b20a2 2018-03-12 stsp return err;
266 c34b20a2 2018-03-12 stsp err = write_fileindex_val32(ctx, entry->gid, outfile);
268 c34b20a2 2018-03-12 stsp return err;
269 c34b20a2 2018-03-12 stsp err = write_fileindex_val32(ctx, entry->size, outfile);
271 c34b20a2 2018-03-12 stsp return err;
273 c34b20a2 2018-03-12 stsp err = write_fileindex_val16(ctx, entry->mode, outfile);
275 c34b20a2 2018-03-12 stsp return err;
277 c34b20a2 2018-03-12 stsp SHA1Update(ctx, entry->blob_sha1, SHA1_DIGEST_LENGTH);
278 c34b20a2 2018-03-12 stsp n = fwrite(entry->blob_sha1, 1, SHA1_DIGEST_LENGTH, outfile);
279 fc76cabb 2018-12-25 stsp if (n != SHA1_DIGEST_LENGTH)
280 fc76cabb 2018-12-25 stsp return got_ferror(outfile, GOT_ERR_IO);
282 fc76cabb 2018-12-25 stsp SHA1Update(ctx, entry->commit_sha1, SHA1_DIGEST_LENGTH);
283 fc76cabb 2018-12-25 stsp n = fwrite(entry->commit_sha1, 1, SHA1_DIGEST_LENGTH, outfile);
284 c34b20a2 2018-03-12 stsp if (n != SHA1_DIGEST_LENGTH)
285 c34b20a2 2018-03-12 stsp return got_ferror(outfile, GOT_ERR_IO);
287 c34b20a2 2018-03-12 stsp err = write_fileindex_val32(ctx, entry->flags, outfile);
289 c34b20a2 2018-03-12 stsp return err;
291 c34b20a2 2018-03-12 stsp err = write_fileindex_path(ctx, entry->path, outfile);
292 c34b20a2 2018-03-12 stsp return err;
295 9d31a1d8 2018-03-11 stsp const struct got_error *
296 9d31a1d8 2018-03-11 stsp got_fileindex_write(struct got_fileindex *fileindex, FILE *outfile)
298 b504a804 2019-01-08 stsp const struct got_error *err = NULL;
299 c34b20a2 2018-03-12 stsp struct got_fileindex_hdr hdr;
300 c34b20a2 2018-03-12 stsp SHA1_CTX ctx;
301 c34b20a2 2018-03-12 stsp uint8_t sha1[SHA1_DIGEST_LENGTH];
303 c34b20a2 2018-03-12 stsp const size_t len = sizeof(hdr.signature) + sizeof(hdr.version) +
304 c34b20a2 2018-03-12 stsp sizeof(hdr.nentries);
305 c34b20a2 2018-03-12 stsp uint8_t buf[len];
306 133d2798 2019-01-08 stsp struct got_fileindex_entry *entry;
308 c34b20a2 2018-03-12 stsp SHA1Init(&ctx);
310 c34b20a2 2018-03-12 stsp hdr.signature = htobe32(GOT_FILE_INDEX_SIGNATURE);
311 c34b20a2 2018-03-12 stsp hdr.version = htobe32(GOT_FILE_INDEX_VERSION);
312 133d2798 2019-01-08 stsp hdr.nentries = htobe32(fileindex->nentries);
314 c34b20a2 2018-03-12 stsp memcpy(buf, &hdr, len);
315 c34b20a2 2018-03-12 stsp SHA1Update(&ctx, buf, len);
316 c34b20a2 2018-03-12 stsp n = fwrite(buf, 1, len, outfile);
317 c34b20a2 2018-03-12 stsp if (n != len)
318 c34b20a2 2018-03-12 stsp return got_ferror(outfile, GOT_ERR_IO);
320 133d2798 2019-01-08 stsp RB_FOREACH(entry, got_fileindex_tree, &fileindex->entries) {
321 50952927 2019-01-12 stsp entry->flags &= ~GOT_INDEX_ENTRY_F_INTENT_TO_ADD;
322 133d2798 2019-01-08 stsp err = write_fileindex_entry(&ctx, entry, outfile);
324 133d2798 2019-01-08 stsp return err;
327 c34b20a2 2018-03-12 stsp SHA1Final(sha1, &ctx);
328 c34b20a2 2018-03-12 stsp n = fwrite(sha1, 1, sizeof(sha1), outfile);
329 c34b20a2 2018-03-12 stsp if (n != sizeof(sha1))
330 c34b20a2 2018-03-12 stsp return got_ferror(outfile, GOT_ERR_IO);
332 52a74475 2018-12-24 stsp return NULL;
335 52a74475 2018-12-24 stsp static const struct got_error *
336 52a74475 2018-12-24 stsp read_fileindex_val64(uint64_t *val, SHA1_CTX *ctx, FILE *infile)
340 3fe2daf1 2018-12-24 stsp n = fread(val, 1, sizeof(*val), infile);
341 3fe2daf1 2018-12-24 stsp if (n != sizeof(*val))
342 27793341 2019-01-12 stsp return got_ferror(infile, GOT_ERR_FILEIDX_BAD);
343 3fe2daf1 2018-12-24 stsp SHA1Update(ctx, (uint8_t *)val, sizeof(*val));
344 9eb6a6b2 2018-12-24 stsp *val = be64toh(*val);
345 52a74475 2018-12-24 stsp return NULL;
348 52a74475 2018-12-24 stsp static const struct got_error *
349 52a74475 2018-12-24 stsp read_fileindex_val32(uint32_t *val, SHA1_CTX *ctx, FILE *infile)
353 3fe2daf1 2018-12-24 stsp n = fread(val, 1, sizeof(*val), infile);
354 3fe2daf1 2018-12-24 stsp if (n != sizeof(*val))
355 27793341 2019-01-12 stsp return got_ferror(infile, GOT_ERR_FILEIDX_BAD);
356 3fe2daf1 2018-12-24 stsp SHA1Update(ctx, (uint8_t *)val, sizeof(*val));
357 9eb6a6b2 2018-12-24 stsp *val = be32toh(*val);
358 52a74475 2018-12-24 stsp return NULL;
361 52a74475 2018-12-24 stsp static const struct got_error *
362 52a74475 2018-12-24 stsp read_fileindex_val16(uint16_t *val, SHA1_CTX *ctx, FILE *infile)
366 3fe2daf1 2018-12-24 stsp n = fread(val, 1, sizeof(*val), infile);
367 3fe2daf1 2018-12-24 stsp if (n != sizeof(*val))
368 27793341 2019-01-12 stsp return got_ferror(infile, GOT_ERR_FILEIDX_BAD);
369 3fe2daf1 2018-12-24 stsp SHA1Update(ctx, (uint8_t *)val, sizeof(*val));
370 9eb6a6b2 2018-12-24 stsp *val = be16toh(*val);
371 52a74475 2018-12-24 stsp return NULL;
374 52a74475 2018-12-24 stsp static const struct got_error *
375 52a74475 2018-12-24 stsp read_fileindex_path(char **path, SHA1_CTX *ctx, FILE *infile)
377 52a74475 2018-12-24 stsp const struct got_error *err = NULL;
378 52a74475 2018-12-24 stsp uint8_t buf[8];
379 52a74475 2018-12-24 stsp size_t n, len = 0, totlen = sizeof(buf);
381 52a74475 2018-12-24 stsp *path = malloc(totlen);
382 52a74475 2018-12-24 stsp if (*path == NULL)
383 52a74475 2018-12-24 stsp return got_error_from_errno();
386 52a74475 2018-12-24 stsp n = fread(buf, 1, sizeof(buf), infile);
387 52a74475 2018-12-24 stsp if (n != sizeof(buf))
388 27793341 2019-01-12 stsp return got_ferror(infile, GOT_ERR_FILEIDX_BAD);
389 52a74475 2018-12-24 stsp if (len + sizeof(buf) > totlen) {
390 52a74475 2018-12-24 stsp char *p = reallocarray(*path, totlen + sizeof(buf), 1);
391 52a74475 2018-12-24 stsp if (p == NULL) {
392 52a74475 2018-12-24 stsp err = got_error_from_errno();
395 52a74475 2018-12-24 stsp totlen += sizeof(buf);
398 52a74475 2018-12-24 stsp SHA1Update(ctx, buf, sizeof(buf));
399 52a74475 2018-12-24 stsp memcpy(*path + len, buf, sizeof(buf));
400 52a74475 2018-12-24 stsp len += sizeof(buf);
401 60619907 2018-12-27 stsp } while (memchr(buf, '\0', sizeof(buf)) == NULL);
404 52a74475 2018-12-24 stsp free(*path);
405 52a74475 2018-12-24 stsp *path = NULL;
407 52a74475 2018-12-24 stsp return err;
410 52a74475 2018-12-24 stsp static const struct got_error *
411 52a74475 2018-12-24 stsp read_fileindex_entry(struct got_fileindex_entry **entryp, SHA1_CTX *ctx,
412 52a74475 2018-12-24 stsp FILE *infile)
414 52a74475 2018-12-24 stsp const struct got_error *err;
415 52a74475 2018-12-24 stsp struct got_fileindex_entry *entry;
418 52a74475 2018-12-24 stsp *entryp = NULL;
420 52a74475 2018-12-24 stsp entry = calloc(1, sizeof(*entry));
421 52a74475 2018-12-24 stsp if (entry == NULL)
422 52a74475 2018-12-24 stsp return got_error_from_errno();
424 52a74475 2018-12-24 stsp err = read_fileindex_val64(&entry->ctime_sec, ctx, infile);
427 52a74475 2018-12-24 stsp err = read_fileindex_val64(&entry->ctime_nsec, ctx, infile);
430 52a74475 2018-12-24 stsp err = read_fileindex_val64(&entry->mtime_sec, ctx, infile);
433 52a74475 2018-12-24 stsp err = read_fileindex_val64(&entry->mtime_nsec, ctx, infile);
437 52a74475 2018-12-24 stsp err = read_fileindex_val32(&entry->uid, ctx, infile);
440 52a74475 2018-12-24 stsp err = read_fileindex_val32(&entry->gid, ctx, infile);
443 52a74475 2018-12-24 stsp err = read_fileindex_val32(&entry->size, ctx, infile);
447 52a74475 2018-12-24 stsp err = read_fileindex_val16(&entry->mode, ctx, infile);
451 52a74475 2018-12-24 stsp n = fread(entry->blob_sha1, 1, SHA1_DIGEST_LENGTH, infile);
452 52a74475 2018-12-24 stsp if (n != SHA1_DIGEST_LENGTH) {
453 27793341 2019-01-12 stsp err = got_ferror(infile, GOT_ERR_FILEIDX_BAD);
456 52a74475 2018-12-24 stsp SHA1Update(ctx, entry->blob_sha1, SHA1_DIGEST_LENGTH);
458 fc76cabb 2018-12-25 stsp n = fread(entry->commit_sha1, 1, SHA1_DIGEST_LENGTH, infile);
459 fc76cabb 2018-12-25 stsp if (n != SHA1_DIGEST_LENGTH) {
460 27793341 2019-01-12 stsp err = got_ferror(infile, GOT_ERR_FILEIDX_BAD);
463 fc76cabb 2018-12-25 stsp SHA1Update(ctx, entry->commit_sha1, SHA1_DIGEST_LENGTH);
465 52a74475 2018-12-24 stsp err = read_fileindex_val32(&entry->flags, ctx, infile);
469 52a74475 2018-12-24 stsp err = read_fileindex_path(&entry->path, ctx, infile);
472 52a74475 2018-12-24 stsp free(entry);
474 52a74475 2018-12-24 stsp *entryp = entry;
475 52a74475 2018-12-24 stsp return err;
478 52a74475 2018-12-24 stsp const struct got_error *
479 52a74475 2018-12-24 stsp got_fileindex_read(struct got_fileindex *fileindex, FILE *infile)
481 52a74475 2018-12-24 stsp const struct got_error *err = NULL;
482 52a74475 2018-12-24 stsp struct got_fileindex_hdr hdr;
483 52a74475 2018-12-24 stsp SHA1_CTX ctx;
484 52a74475 2018-12-24 stsp struct got_fileindex_entry *entry;
485 52a74475 2018-12-24 stsp uint8_t sha1_expected[SHA1_DIGEST_LENGTH];
486 52a74475 2018-12-24 stsp uint8_t sha1[SHA1_DIGEST_LENGTH];
488 52a74475 2018-12-24 stsp const size_t len = sizeof(hdr.signature) + sizeof(hdr.version) +
489 52a74475 2018-12-24 stsp sizeof(hdr.nentries);
490 52a74475 2018-12-24 stsp uint8_t buf[len];
493 52a74475 2018-12-24 stsp SHA1Init(&ctx);
495 52a74475 2018-12-24 stsp n = fread(buf, 1, len, infile);
496 51514078 2018-12-25 stsp if (n != len) {
497 51514078 2018-12-25 stsp if (n == 0) /* EOF */
498 51514078 2018-12-25 stsp return NULL;
499 27793341 2019-01-12 stsp return got_ferror(infile, GOT_ERR_FILEIDX_BAD);
502 52a74475 2018-12-24 stsp SHA1Update(&ctx, buf, len);
504 52a74475 2018-12-24 stsp memcpy(&hdr, buf, len);
505 9eb6a6b2 2018-12-24 stsp hdr.signature = be32toh(hdr.signature);
506 9eb6a6b2 2018-12-24 stsp hdr.version = be32toh(hdr.version);
507 9eb6a6b2 2018-12-24 stsp hdr.nentries = be32toh(hdr.nentries);
509 52a74475 2018-12-24 stsp if (hdr.signature != GOT_FILE_INDEX_SIGNATURE)
510 52a74475 2018-12-24 stsp return got_error(GOT_ERR_FILEIDX_SIG);
511 52a74475 2018-12-24 stsp if (hdr.version != GOT_FILE_INDEX_VERSION)
512 52a74475 2018-12-24 stsp return got_error(GOT_ERR_FILEIDX_VER);
514 52a74475 2018-12-24 stsp for (i = 0; i < hdr.nentries; i++) {
515 52a74475 2018-12-24 stsp err = read_fileindex_entry(&entry, &ctx, infile);
517 52a74475 2018-12-24 stsp return err;
518 50952927 2019-01-12 stsp err = add_entry(fileindex, entry);
520 52a74475 2018-12-24 stsp return err;
523 52a74475 2018-12-24 stsp n = fread(sha1_expected, 1, sizeof(sha1_expected), infile);
524 52a74475 2018-12-24 stsp if (n != sizeof(sha1_expected))
525 27793341 2019-01-12 stsp return got_ferror(infile, GOT_ERR_FILEIDX_BAD);
526 52a74475 2018-12-24 stsp SHA1Final(sha1, &ctx);
527 52a74475 2018-12-24 stsp if (memcmp(sha1, sha1_expected, SHA1_DIGEST_LENGTH) != 0)
528 52a74475 2018-12-24 stsp return got_error(GOT_ERR_FILEIDX_CSUM);
530 9d31a1d8 2018-03-11 stsp return NULL;
534 8da9e5f4 2019-01-12 stsp in_same_subdir(struct got_fileindex_entry *ie, const char *parent_path,
535 8da9e5f4 2019-01-12 stsp struct got_tree_entry *te)
537 8da9e5f4 2019-01-12 stsp size_t parent_len = strlen(parent_path);
538 8da9e5f4 2019-01-12 stsp char *ie_name;
540 8da9e5f4 2019-01-12 stsp if (!got_path_is_child(ie->path, parent_path, parent_len))
543 8da9e5f4 2019-01-12 stsp ie_name = ie->path + parent_len;
544 8da9e5f4 2019-01-12 stsp while (ie_name[0] == '/')
547 50952927 2019-01-12 stsp return strchr(ie_name, '/') == NULL;
551 8da9e5f4 2019-01-12 stsp cmp_entries(struct got_fileindex_entry *ie, const char *parent_path,
552 8da9e5f4 2019-01-12 stsp struct got_tree_entry *te)
554 8da9e5f4 2019-01-12 stsp size_t parent_len = strlen(parent_path);
555 8da9e5f4 2019-01-12 stsp char *ie_name;
557 8da9e5f4 2019-01-12 stsp if (!in_same_subdir(ie, parent_path, te)) {
558 8da9e5f4 2019-01-12 stsp if (parent_path[0])
559 50952927 2019-01-12 stsp return strcmp(ie->path, parent_path);
560 50952927 2019-01-12 stsp return strcmp(ie->path, te->name);
563 8da9e5f4 2019-01-12 stsp ie_name = ie->path + parent_len;
564 8da9e5f4 2019-01-12 stsp while (ie_name[0] == '/')
567 50952927 2019-01-12 stsp return strcmp(ie_name, te->name);
570 8da9e5f4 2019-01-12 stsp static const struct got_error *
571 8da9e5f4 2019-01-12 stsp diff_fileindex_tree(struct got_fileindex *, struct got_fileindex_entry **,
572 8da9e5f4 2019-01-12 stsp struct got_tree_object *, const char *, struct got_repository *,
573 8da9e5f4 2019-01-12 stsp struct got_fileindex_diff_cb *, void *);
575 50952927 2019-01-12 stsp struct got_fileindex_entry *
576 50952927 2019-01-12 stsp walk_fileindex(struct got_fileindex *fileindex, struct got_fileindex_entry *ie)
578 50952927 2019-01-12 stsp struct got_fileindex_entry *next;
580 50952927 2019-01-12 stsp next = RB_NEXT(got_fileindex_tree, &fileindex->entries, ie);
582 50952927 2019-01-12 stsp /* Skip entries which were newly added by diff callbacks. */
583 50952927 2019-01-12 stsp while (next && (next->flags & GOT_INDEX_ENTRY_F_INTENT_TO_ADD))
584 50952927 2019-01-12 stsp next = RB_NEXT(got_fileindex_tree, &fileindex->entries, next);
586 50952927 2019-01-12 stsp return next;
589 8da9e5f4 2019-01-12 stsp static const struct got_error *
590 8da9e5f4 2019-01-12 stsp walk_tree(struct got_tree_entry **next, struct got_fileindex *fileindex,
591 8da9e5f4 2019-01-12 stsp struct got_fileindex_entry **ie, struct got_tree_entry *te,
592 8da9e5f4 2019-01-12 stsp const char *path, struct got_repository *repo,
593 8da9e5f4 2019-01-12 stsp struct got_fileindex_diff_cb *cb, void *cb_arg)
595 8da9e5f4 2019-01-12 stsp const struct got_error *err = NULL;
597 8da9e5f4 2019-01-12 stsp if (te && S_ISREG(te->mode)) {
598 8da9e5f4 2019-01-12 stsp *next = SIMPLEQ_NEXT(te, entry);
599 8da9e5f4 2019-01-12 stsp return NULL;
602 8da9e5f4 2019-01-12 stsp while (te && S_ISDIR(te->mode)) {
603 8da9e5f4 2019-01-12 stsp char *subpath;
604 8da9e5f4 2019-01-12 stsp struct got_tree_object *subtree;
606 8da9e5f4 2019-01-12 stsp if (asprintf(&subpath, "%s%s%s", path,
607 8da9e5f4 2019-01-12 stsp path[0] == '\0' ? "" : "/", te->name) == -1)
608 8da9e5f4 2019-01-12 stsp return got_error_from_errno();
610 8da9e5f4 2019-01-12 stsp err = got_object_open_as_tree(&subtree, repo, te->id);
612 8da9e5f4 2019-01-12 stsp free(subpath);
613 8da9e5f4 2019-01-12 stsp return err;
616 8da9e5f4 2019-01-12 stsp if (*ie == NULL || !in_same_subdir(*ie, path, te)) {
617 8da9e5f4 2019-01-12 stsp err = cb->diff_new(cb_arg, te, path);
619 8da9e5f4 2019-01-12 stsp return err;
622 8da9e5f4 2019-01-12 stsp err = diff_fileindex_tree(fileindex, ie, subtree,
623 8da9e5f4 2019-01-12 stsp subpath, repo, cb, cb_arg);
624 8da9e5f4 2019-01-12 stsp free(subpath);
625 8da9e5f4 2019-01-12 stsp got_object_tree_close(subtree);
627 8da9e5f4 2019-01-12 stsp return err;
628 8da9e5f4 2019-01-12 stsp te = SIMPLEQ_NEXT(te, entry);
631 8da9e5f4 2019-01-12 stsp *next = te;
632 8da9e5f4 2019-01-12 stsp return NULL;
635 8da9e5f4 2019-01-12 stsp static const struct got_error *
636 8da9e5f4 2019-01-12 stsp diff_fileindex_tree(struct got_fileindex *fileindex,
637 8da9e5f4 2019-01-12 stsp struct got_fileindex_entry **ie, struct got_tree_object *tree,
638 8da9e5f4 2019-01-12 stsp const char *path, struct got_repository *repo,
639 8da9e5f4 2019-01-12 stsp struct got_fileindex_diff_cb *cb, void *cb_arg)
641 8da9e5f4 2019-01-12 stsp const struct got_error *err = NULL;
642 8da9e5f4 2019-01-12 stsp struct got_tree_entry *te = NULL;
643 8da9e5f4 2019-01-12 stsp size_t path_len = strlen(path);
644 8da9e5f4 2019-01-12 stsp const struct got_tree_entries *entries;
645 8da9e5f4 2019-01-12 stsp struct got_fileindex_entry *next;
647 8da9e5f4 2019-01-12 stsp entries = got_object_tree_get_entries(tree);
648 8da9e5f4 2019-01-12 stsp te = SIMPLEQ_FIRST(&entries->head);
650 8da9e5f4 2019-01-12 stsp if (te && *ie) {
651 8da9e5f4 2019-01-12 stsp int cmp = cmp_entries(*ie, path, te);
652 8da9e5f4 2019-01-12 stsp if (cmp == 0) {
653 8da9e5f4 2019-01-12 stsp err = cb->diff_old_new(cb_arg, *ie, te,
657 50952927 2019-01-12 stsp *ie = walk_fileindex(fileindex, *ie);
658 8da9e5f4 2019-01-12 stsp err = walk_tree(&te, fileindex, ie, te,
659 8da9e5f4 2019-01-12 stsp path, repo, cb, cb_arg);
660 50952927 2019-01-12 stsp } else if (cmp < 0 ) {
661 50952927 2019-01-12 stsp next = walk_fileindex(fileindex, *ie);
662 8da9e5f4 2019-01-12 stsp err = cb->diff_old(cb_arg, *ie, path);
665 8da9e5f4 2019-01-12 stsp *ie = next;
667 8da9e5f4 2019-01-12 stsp err = cb->diff_new(cb_arg, te, path);
670 8da9e5f4 2019-01-12 stsp err = walk_tree(&te, fileindex, ie, te,
671 8da9e5f4 2019-01-12 stsp path, repo, cb, cb_arg);
675 8da9e5f4 2019-01-12 stsp } else if (*ie) {
676 50952927 2019-01-12 stsp next = walk_fileindex(fileindex, *ie);
677 8da9e5f4 2019-01-12 stsp err = cb->diff_old(cb_arg, *ie, path);
680 8da9e5f4 2019-01-12 stsp *ie = next;
681 8da9e5f4 2019-01-12 stsp } else if (te) {
682 8da9e5f4 2019-01-12 stsp err = cb->diff_new(cb_arg, te, path);
685 8da9e5f4 2019-01-12 stsp err = walk_tree(&te, fileindex, ie, te, path, repo, cb,
690 8da9e5f4 2019-01-12 stsp } while ((*ie && got_path_is_child((*ie)->path, path, path_len)) || te);
692 8da9e5f4 2019-01-12 stsp return err;
695 8da9e5f4 2019-01-12 stsp const struct got_error *
696 8da9e5f4 2019-01-12 stsp got_fileindex_diff_tree(struct got_fileindex *fileindex,
697 8da9e5f4 2019-01-12 stsp struct got_tree_object *tree, struct got_repository *repo,
698 8da9e5f4 2019-01-12 stsp struct got_fileindex_diff_cb *cb, void *cb_arg)
700 8da9e5f4 2019-01-12 stsp struct got_fileindex_entry *min;
701 8da9e5f4 2019-01-12 stsp min = RB_MIN(got_fileindex_tree, &fileindex->entries);
702 8da9e5f4 2019-01-12 stsp return diff_fileindex_tree(fileindex, &min, tree, "", repo, cb, cb_arg);
705 7a9df742 2019-01-08 stsp RB_GENERATE(got_fileindex_tree, got_fileindex_entry, entry, got_fileindex_cmp);
