2 a1fd68d8 2018-01-12 stsp * Copyright (c) 2018 Stefan Sperling <stsp@openbsd.org>
4 d71d75ad 2017-11-05 stsp * Permission to use, copy, modify, and distribute this software for any
5 d71d75ad 2017-11-05 stsp * purpose with or without fee is hereby granted, provided that the above
6 d71d75ad 2017-11-05 stsp * copyright notice and this permission notice appear in all copies.
8 d71d75ad 2017-11-05 stsp * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 d71d75ad 2017-11-05 stsp * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 d71d75ad 2017-11-05 stsp * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 d71d75ad 2017-11-05 stsp * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 d71d75ad 2017-11-05 stsp * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 d71d75ad 2017-11-05 stsp * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 d71d75ad 2017-11-05 stsp * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 0ffeb3c2 2017-11-26 stsp #include <sys/stat.h>
18 d1cda826 2017-11-06 stsp #include <sys/queue.h>
20 a1fd68d8 2018-01-12 stsp #include <errno.h>
21 d71d75ad 2017-11-05 stsp #include <stdio.h>
22 ab9a70b2 2017-11-06 stsp #include <stdlib.h>
23 ab9a70b2 2017-11-06 stsp #include <string.h>
24 d71d75ad 2017-11-05 stsp #include <sha1.h>
25 ab9a70b2 2017-11-06 stsp #include <zlib.h>
26 ab9a70b2 2017-11-06 stsp #include <ctype.h>
27 ab9a70b2 2017-11-06 stsp #include <limits.h>
29 ab9a70b2 2017-11-06 stsp #include "got_error.h"
30 d71d75ad 2017-11-05 stsp #include "got_object.h"
31 ab9a70b2 2017-11-06 stsp #include "got_repository.h"
32 d1cda826 2017-11-06 stsp #include "got_sha1.h"
33 a1fd68d8 2018-01-12 stsp #include "pack.h"
36 ab9a70b2 2017-11-06 stsp #define MIN(_a,_b) ((_a) < (_b) ? (_a) : (_b))
39 ab9a70b2 2017-11-06 stsp #ifndef nitems
40 ab9a70b2 2017-11-06 stsp #define nitems(_a) (sizeof(_a) / sizeof((_a)[0]))
43 ab9a70b2 2017-11-06 stsp #define GOT_OBJ_TAG_COMMIT "commit"
44 ab9a70b2 2017-11-06 stsp #define GOT_OBJ_TAG_TREE "tree"
45 ab9a70b2 2017-11-06 stsp #define GOT_OBJ_TAG_BLOB "blob"
47 d1cda826 2017-11-06 stsp #define GOT_COMMIT_TAG_TREE "tree "
48 d1cda826 2017-11-06 stsp #define GOT_COMMIT_TAG_PARENT "parent "
49 d1cda826 2017-11-06 stsp #define GOT_COMMIT_TAG_AUTHOR "author "
50 d1cda826 2017-11-06 stsp #define GOT_COMMIT_TAG_COMMITTER "committer "
53 d71d75ad 2017-11-05 stsp got_object_id_str(struct got_object_id *id, char *buf, size_t size)
55 a1fd68d8 2018-01-12 stsp return got_sha1_digest_to_str(id->sha1, buf, size);
59 a1fd68d8 2018-01-12 stsp got_object_id_cmp(struct got_object_id *id1, struct got_object_id *id2)
61 a1fd68d8 2018-01-12 stsp return memcmp(id1->sha1, id2->sha1, SHA1_DIGEST_LENGTH);
64 a1fd68d8 2018-01-12 stsp const char *
65 a1fd68d8 2018-01-12 stsp got_object_get_type_tag(int type)
67 a1fd68d8 2018-01-12 stsp switch (type) {
68 a1fd68d8 2018-01-12 stsp case GOT_OBJ_TYPE_COMMIT:
69 a1fd68d8 2018-01-12 stsp return GOT_OBJ_TAG_COMMIT;
70 a1fd68d8 2018-01-12 stsp case GOT_OBJ_TYPE_TREE:
71 a1fd68d8 2018-01-12 stsp return GOT_OBJ_TAG_TREE;
72 a1fd68d8 2018-01-12 stsp case GOT_OBJ_TYPE_BLOB:
73 a1fd68d8 2018-01-12 stsp return GOT_OBJ_TAG_BLOB;
76 a1fd68d8 2018-01-12 stsp return NULL;
80 ab9a70b2 2017-11-06 stsp inflate_end(struct got_zstream_buf *zb)
82 ab9a70b2 2017-11-06 stsp free(zb->inbuf);
83 ab9a70b2 2017-11-06 stsp free(zb->outbuf);
84 ab9a70b2 2017-11-06 stsp inflateEnd(&zb->z);
87 ab9a70b2 2017-11-06 stsp static const struct got_error *
88 ab9a70b2 2017-11-06 stsp inflate_init(struct got_zstream_buf *zb, size_t bufsize)
90 ab9a70b2 2017-11-06 stsp const struct got_error *err = NULL;
92 ab9a70b2 2017-11-06 stsp memset(zb, 0, sizeof(*zb));
94 ab9a70b2 2017-11-06 stsp zb->z.zalloc = Z_NULL;
95 ab9a70b2 2017-11-06 stsp zb->z.zfree = Z_NULL;
96 ab9a70b2 2017-11-06 stsp if (inflateInit(&zb->z) != Z_OK) {
97 ab9a70b2 2017-11-06 stsp err = got_error(GOT_ERR_IO);
101 ab9a70b2 2017-11-06 stsp zb->inlen = zb->outlen = bufsize;
103 ab9a70b2 2017-11-06 stsp zb->inbuf = calloc(1, zb->inlen);
104 ab9a70b2 2017-11-06 stsp if (zb->inbuf == NULL) {
105 ab9a70b2 2017-11-06 stsp err = got_error(GOT_ERR_NO_MEM);
109 ab9a70b2 2017-11-06 stsp zb->outbuf = calloc(1, zb->outlen);
110 ab9a70b2 2017-11-06 stsp if (zb->outbuf == NULL) {
111 ab9a70b2 2017-11-06 stsp err = got_error(GOT_ERR_NO_MEM);
117 ab9a70b2 2017-11-06 stsp inflate_end(zb);
118 ab9a70b2 2017-11-06 stsp return err;
121 ab9a70b2 2017-11-06 stsp static const struct got_error *
122 ab9a70b2 2017-11-06 stsp inflate_read(struct got_zstream_buf *zb, FILE *f, size_t *outlenp)
124 ab9a70b2 2017-11-06 stsp size_t last_total_out = zb->z.total_out;
125 ab9a70b2 2017-11-06 stsp z_stream *z = &zb->z;
126 ab9a70b2 2017-11-06 stsp int n, ret;
128 ab9a70b2 2017-11-06 stsp z->next_out = zb->outbuf;
129 ab9a70b2 2017-11-06 stsp z->avail_out = zb->outlen;
132 a3e2cbea 2017-12-01 stsp if (z->avail_in == 0) {
134 a3e2cbea 2017-12-01 stsp n = fread(zb->inbuf, 1, zb->inlen, f);
135 a3e2cbea 2017-12-01 stsp if (n == 0) {
136 a3e2cbea 2017-12-01 stsp if (ferror(f))
137 a3e2cbea 2017-12-01 stsp return got_error(GOT_ERR_IO);
138 a3e2cbea 2017-12-01 stsp *outlenp = 0;
139 a3e2cbea 2017-12-01 stsp return NULL;
141 a3e2cbea 2017-12-01 stsp z->next_in = zb->inbuf;
142 a3e2cbea 2017-12-01 stsp z->avail_in = n;
144 a3e2cbea 2017-12-01 stsp ret = inflate(z, Z_SYNC_FLUSH);
145 a3e2cbea 2017-12-01 stsp } while (ret == Z_OK && z->avail_out > 0);
147 a3e2cbea 2017-12-01 stsp if (ret != Z_OK) {
148 a3e2cbea 2017-12-01 stsp if (ret != Z_STREAM_END)
149 a3e2cbea 2017-12-01 stsp return got_error(GOT_ERR_DECOMPRESSION);
150 a3e2cbea 2017-12-01 stsp zb->flags |= GOT_ZSTREAM_F_HAVE_MORE;
153 ab9a70b2 2017-11-06 stsp *outlenp = z->total_out - last_total_out;
154 ab9a70b2 2017-11-06 stsp return NULL;
157 ab9a70b2 2017-11-06 stsp static const struct got_error *
158 d1cda826 2017-11-06 stsp parse_object_header(struct got_object **obj, char *buf, size_t len)
160 ab9a70b2 2017-11-06 stsp const char *obj_tags[] = {
161 ab9a70b2 2017-11-06 stsp GOT_OBJ_TAG_COMMIT,
162 ab9a70b2 2017-11-06 stsp GOT_OBJ_TAG_TREE,
163 ab9a70b2 2017-11-06 stsp GOT_OBJ_TAG_BLOB
165 ab9a70b2 2017-11-06 stsp const int obj_types[] = {
166 ab9a70b2 2017-11-06 stsp GOT_OBJ_TYPE_COMMIT,
167 ab9a70b2 2017-11-06 stsp GOT_OBJ_TYPE_TREE,
168 ab9a70b2 2017-11-06 stsp GOT_OBJ_TYPE_BLOB,
170 ab9a70b2 2017-11-06 stsp int type = 0;
171 d1cda826 2017-11-06 stsp size_t size = 0, hdrlen = 0;
173 ab9a70b2 2017-11-06 stsp char *p = strchr(buf, '\0');
175 ab9a70b2 2017-11-06 stsp if (p == NULL)
176 ab9a70b2 2017-11-06 stsp return got_error(GOT_ERR_BAD_OBJ_HDR);
178 d1cda826 2017-11-06 stsp hdrlen = strlen(buf) + 1 /* '\0' */;
180 ab9a70b2 2017-11-06 stsp for (i = 0; i < nitems(obj_tags); i++) {
181 ab9a70b2 2017-11-06 stsp const char *tag = obj_tags[i];
182 63323519 2017-11-06 stsp size_t tlen = strlen(tag);
183 ab9a70b2 2017-11-06 stsp const char *errstr;
185 63323519 2017-11-06 stsp if (strncmp(buf, tag, tlen) != 0)
188 ab9a70b2 2017-11-06 stsp type = obj_types[i];
189 63323519 2017-11-06 stsp if (len <= tlen)
190 ab9a70b2 2017-11-06 stsp return got_error(GOT_ERR_BAD_OBJ_HDR);
191 63323519 2017-11-06 stsp size = strtonum(buf + tlen, 0, LONG_MAX, &errstr);
192 ab9a70b2 2017-11-06 stsp if (errstr != NULL)
193 ab9a70b2 2017-11-06 stsp return got_error(GOT_ERR_BAD_OBJ_HDR);
197 ab9a70b2 2017-11-06 stsp if (type == 0)
198 ab9a70b2 2017-11-06 stsp return got_error(GOT_ERR_BAD_OBJ_HDR);
200 ab9a70b2 2017-11-06 stsp *obj = calloc(1, sizeof(**obj));
201 ab9a70b2 2017-11-06 stsp (*obj)->type = type;
202 d1cda826 2017-11-06 stsp (*obj)->hdrlen = hdrlen;
203 ab9a70b2 2017-11-06 stsp (*obj)->size = size;
204 ab9a70b2 2017-11-06 stsp return NULL;
207 ab9a70b2 2017-11-06 stsp static const struct got_error *
208 ab9a70b2 2017-11-06 stsp read_object_header(struct got_object **obj, struct got_repository *repo,
211 ab9a70b2 2017-11-06 stsp const struct got_error *err;
212 ab9a70b2 2017-11-06 stsp struct got_zstream_buf zb;
214 744d9326 2017-12-01 stsp size_t len;
215 a3e2cbea 2017-12-01 stsp const size_t zbsize = 64;
216 744d9326 2017-12-01 stsp size_t outlen, totlen;
217 ab9a70b2 2017-11-06 stsp int i, ret;
219 744d9326 2017-12-01 stsp buf = calloc(zbsize, sizeof(char));
220 a3e2cbea 2017-12-01 stsp if (buf == NULL)
221 a3e2cbea 2017-12-01 stsp return got_error(GOT_ERR_NO_MEM);
223 a3e2cbea 2017-12-01 stsp err = inflate_init(&zb, zbsize);
225 ab9a70b2 2017-11-06 stsp return err;
228 744d9326 2017-12-01 stsp totlen = 0;
230 a3e2cbea 2017-12-01 stsp err = inflate_read(&zb, f, &outlen);
233 e302c59e 2017-12-01 stsp if (strchr(zb.outbuf, '\0') == NULL) {
234 a3e2cbea 2017-12-01 stsp buf = recallocarray(buf, 1 + i, 2 + i, zbsize);
235 e302c59e 2017-12-01 stsp if (buf == NULL) {
236 e302c59e 2017-12-01 stsp err = got_error(GOT_ERR_NO_MEM);
240 c56976de 2017-12-01 stsp memcpy(buf + totlen, zb.outbuf, outlen);
241 744d9326 2017-12-01 stsp totlen += outlen;
243 a3e2cbea 2017-12-01 stsp } while (strchr(zb.outbuf, '\0') == NULL);
245 744d9326 2017-12-01 stsp err = parse_object_header(obj, buf, totlen);
247 ab9a70b2 2017-11-06 stsp inflate_end(&zb);
248 ab9a70b2 2017-11-06 stsp return err;
251 d1cda826 2017-11-06 stsp static const struct got_error *
252 d1cda826 2017-11-06 stsp object_path(char **path, struct got_object_id *id,
253 d1cda826 2017-11-06 stsp struct got_repository *repo)
255 ab9a70b2 2017-11-06 stsp const struct got_error *err = NULL;
256 ab9a70b2 2017-11-06 stsp char hex[SHA1_DIGEST_STRING_LENGTH];
257 d1cda826 2017-11-06 stsp char *path_objects = got_repo_get_path_objects(repo);
259 ab9a70b2 2017-11-06 stsp if (path_objects == NULL)
260 ab9a70b2 2017-11-06 stsp return got_error(GOT_ERR_NO_MEM);
262 ab9a70b2 2017-11-06 stsp got_object_id_str(id, hex, sizeof(hex));
264 d1cda826 2017-11-06 stsp if (asprintf(path, "%s/%.2x/%s", path_objects,
265 d1cda826 2017-11-06 stsp id->sha1[0], hex + 2) == -1)
266 ab9a70b2 2017-11-06 stsp err = got_error(GOT_ERR_NO_MEM);
268 d1cda826 2017-11-06 stsp free(path_objects);
269 d1cda826 2017-11-06 stsp return err;
272 d1cda826 2017-11-06 stsp const struct got_error *
273 d1cda826 2017-11-06 stsp got_object_open(struct got_object **obj, struct got_repository *repo,
274 d1cda826 2017-11-06 stsp struct got_object_id *id)
276 d1cda826 2017-11-06 stsp const struct got_error *err = NULL;
277 a1fd68d8 2018-01-12 stsp char *path;
278 a1fd68d8 2018-01-12 stsp FILE *f = NULL;
280 d1cda826 2017-11-06 stsp err = object_path(&path, id, repo);
282 d1cda826 2017-11-06 stsp return err;
284 a1fd68d8 2018-01-12 stsp f = fopen(path, "rb");
285 a1fd68d8 2018-01-12 stsp if (f == NULL) {
286 a1fd68d8 2018-01-12 stsp if (errno != ENOENT) {
287 f334529e 2018-01-12 stsp err = got_error_from_errno();
290 a1fd68d8 2018-01-12 stsp err = got_packfile_extract_object(&f, id, repo);
293 a1fd68d8 2018-01-12 stsp if (f == NULL) {
294 a1fd68d8 2018-01-12 stsp err = got_error(GOT_ERR_NO_OBJ);
299 a1fd68d8 2018-01-12 stsp err = read_object_header(obj, repo, f);
300 ab9a70b2 2017-11-06 stsp if (err == NULL)
301 ab9a70b2 2017-11-06 stsp memcpy((*obj)->id.sha1, id->sha1, SHA1_DIGEST_LENGTH);
303 ab9a70b2 2017-11-06 stsp free(path);
304 a1fd68d8 2018-01-12 stsp if (f != NULL)
306 ab9a70b2 2017-11-06 stsp return err;
310 ab9a70b2 2017-11-06 stsp got_object_close(struct got_object *obj)
316 d1cda826 2017-11-06 stsp commit_object_valid(struct got_commit_object *commit)
321 d1cda826 2017-11-06 stsp if (commit == NULL)
325 d1cda826 2017-11-06 stsp for (i = 0; i < SHA1_DIGEST_LENGTH; i++) {
326 d1cda826 2017-11-06 stsp if (commit->tree_id.sha1[i] == 0)
329 d1cda826 2017-11-06 stsp if (n == SHA1_DIGEST_LENGTH)
335 d1cda826 2017-11-06 stsp static const struct got_error *
336 d1cda826 2017-11-06 stsp parse_commit_object(struct got_commit_object **commit, char *buf, size_t len)
338 d1cda826 2017-11-06 stsp const struct got_error *err = NULL;
339 d1cda826 2017-11-06 stsp char *s = buf;
340 d1cda826 2017-11-06 stsp size_t tlen;
341 d1cda826 2017-11-06 stsp ssize_t remain = (ssize_t)len;
343 d1cda826 2017-11-06 stsp *commit = calloc(1, sizeof(**commit));
344 d1cda826 2017-11-06 stsp if (*commit == NULL)
345 d1cda826 2017-11-06 stsp return got_error(GOT_ERR_NO_MEM);
347 d1cda826 2017-11-06 stsp SIMPLEQ_INIT(&(*commit)->parent_ids);
349 d1cda826 2017-11-06 stsp tlen = strlen(GOT_COMMIT_TAG_TREE);
350 d1cda826 2017-11-06 stsp if (strncmp(s, GOT_COMMIT_TAG_TREE, tlen) == 0) {
351 d1cda826 2017-11-06 stsp remain -= tlen;
352 d1cda826 2017-11-06 stsp if (remain < SHA1_DIGEST_STRING_LENGTH) {
353 d1cda826 2017-11-06 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
357 d1cda826 2017-11-06 stsp if (!got_parse_sha1_digest((*commit)->tree_id.sha1, s)) {
358 d1cda826 2017-11-06 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
361 d1cda826 2017-11-06 stsp remain -= SHA1_DIGEST_STRING_LENGTH;
362 d1cda826 2017-11-06 stsp s += SHA1_DIGEST_STRING_LENGTH;
364 d1cda826 2017-11-06 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
368 d1cda826 2017-11-06 stsp tlen = strlen(GOT_COMMIT_TAG_PARENT);
369 d1cda826 2017-11-06 stsp while (strncmp(s, GOT_COMMIT_TAG_PARENT, tlen) == 0) {
370 d1cda826 2017-11-06 stsp struct got_parent_id *pid;
372 d1cda826 2017-11-06 stsp remain -= tlen;
373 d1cda826 2017-11-06 stsp if (remain < SHA1_DIGEST_STRING_LENGTH) {
374 d1cda826 2017-11-06 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
378 d1cda826 2017-11-06 stsp pid = calloc(1, sizeof(*pid));
379 d1cda826 2017-11-06 stsp if (pid == NULL) {
380 d1cda826 2017-11-06 stsp err = got_error(GOT_ERR_NO_MEM);
384 d1cda826 2017-11-06 stsp if (!got_parse_sha1_digest(pid->id.sha1, s)) {
385 d1cda826 2017-11-06 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
388 d1cda826 2017-11-06 stsp SIMPLEQ_INSERT_TAIL(&(*commit)->parent_ids, pid, entry);
389 d1cda826 2017-11-06 stsp (*commit)->nparents++;
391 d1cda826 2017-11-06 stsp s += SHA1_DIGEST_STRING_LENGTH;
394 d1cda826 2017-11-06 stsp tlen = strlen(GOT_COMMIT_TAG_AUTHOR);
395 d1cda826 2017-11-06 stsp if (strncmp(s, GOT_COMMIT_TAG_AUTHOR, tlen) == 0) {
398 d1cda826 2017-11-06 stsp remain -= tlen;
399 d1cda826 2017-11-06 stsp if (remain <= 0) {
400 d1cda826 2017-11-06 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
404 d1cda826 2017-11-06 stsp p = strchr(s, '\n');
405 d1cda826 2017-11-06 stsp if (p == NULL) {
406 d1cda826 2017-11-06 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
410 d1cda826 2017-11-06 stsp (*commit)->author = strdup(s);
411 d1cda826 2017-11-06 stsp if ((*commit)->author == NULL) {
412 d1cda826 2017-11-06 stsp err = got_error(GOT_ERR_NO_MEM);
415 d1cda826 2017-11-06 stsp s += strlen((*commit)->author) + 1;
418 d1cda826 2017-11-06 stsp tlen = strlen(GOT_COMMIT_TAG_COMMITTER);
419 d1cda826 2017-11-06 stsp if (strncmp(s, GOT_COMMIT_TAG_COMMITTER, tlen) == 0) {
422 d1cda826 2017-11-06 stsp remain -= tlen;
423 d1cda826 2017-11-06 stsp if (remain <= 0) {
424 d1cda826 2017-11-06 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
428 d1cda826 2017-11-06 stsp p = strchr(s, '\n');
429 d1cda826 2017-11-06 stsp if (p == NULL) {
430 d1cda826 2017-11-06 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
434 d1cda826 2017-11-06 stsp (*commit)->committer = strdup(s);
435 d1cda826 2017-11-06 stsp if ((*commit)->committer == NULL) {
436 d1cda826 2017-11-06 stsp err = got_error(GOT_ERR_NO_MEM);
439 d1cda826 2017-11-06 stsp s += strlen((*commit)->committer) + 1;
442 d1cda826 2017-11-06 stsp (*commit)->logmsg = strdup(s);
445 d1cda826 2017-11-06 stsp got_object_commit_close(*commit);
446 0ffeb3c2 2017-11-26 stsp return err;
449 0ffeb3c2 2017-11-26 stsp static void
450 0ffeb3c2 2017-11-26 stsp tree_entry_close(struct got_tree_entry *te)
452 0ffeb3c2 2017-11-26 stsp free(te->name);
456 0ffeb3c2 2017-11-26 stsp static const struct got_error *
457 0ffeb3c2 2017-11-26 stsp parse_tree_entry(struct got_tree_entry **te, size_t *elen, char *buf,
458 0ffeb3c2 2017-11-26 stsp size_t maxlen)
460 0ffeb3c2 2017-11-26 stsp char *p = buf, *space;
461 0ffeb3c2 2017-11-26 stsp const struct got_error *err = NULL;
462 0ffeb3c2 2017-11-26 stsp char hex[SHA1_DIGEST_STRING_LENGTH];
464 0ffeb3c2 2017-11-26 stsp *te = calloc(1, sizeof(**te));
465 0ffeb3c2 2017-11-26 stsp if (*te == NULL)
466 0ffeb3c2 2017-11-26 stsp return got_error(GOT_ERR_NO_MEM);
468 0ffeb3c2 2017-11-26 stsp *elen = strlen(buf) + 1;
469 0ffeb3c2 2017-11-26 stsp if (*elen > maxlen) {
471 0ffeb3c2 2017-11-26 stsp return got_error(GOT_ERR_BAD_OBJ_DATA);
474 0ffeb3c2 2017-11-26 stsp space = strchr(buf, ' ');
475 0ffeb3c2 2017-11-26 stsp if (space == NULL) {
477 0ffeb3c2 2017-11-26 stsp return got_error(GOT_ERR_BAD_OBJ_DATA);
479 0ffeb3c2 2017-11-26 stsp while (*p != ' ') {
480 0ffeb3c2 2017-11-26 stsp if (*p < '0' && *p > '7') {
481 0ffeb3c2 2017-11-26 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
484 0ffeb3c2 2017-11-26 stsp (*te)->mode <<= 3;
485 0ffeb3c2 2017-11-26 stsp (*te)->mode |= *p - '0';
489 0ffeb3c2 2017-11-26 stsp (*te)->name = strdup(space + 1);
490 0ffeb3c2 2017-11-26 stsp if (*elen > maxlen || maxlen - *elen < SHA1_DIGEST_LENGTH) {
491 0ffeb3c2 2017-11-26 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
494 0ffeb3c2 2017-11-26 stsp buf += strlen(buf) + 1;
495 0ffeb3c2 2017-11-26 stsp memcpy((*te)->id.sha1, buf, SHA1_DIGEST_LENGTH);
496 0ffeb3c2 2017-11-26 stsp *elen += SHA1_DIGEST_LENGTH;
499 0ffeb3c2 2017-11-26 stsp tree_entry_close(*te);
500 d1cda826 2017-11-06 stsp return err;
503 d1cda826 2017-11-06 stsp static const struct got_error *
504 0ffeb3c2 2017-11-26 stsp parse_tree_object(struct got_tree_object **tree, struct got_repository *repo,
505 0ffeb3c2 2017-11-26 stsp char *buf, size_t len)
507 0ffeb3c2 2017-11-26 stsp size_t remain = len;
508 0ffeb3c2 2017-11-26 stsp int nentries;
510 0ffeb3c2 2017-11-26 stsp *tree = calloc(1, sizeof(**tree));
511 0ffeb3c2 2017-11-26 stsp if (*tree == NULL)
512 0ffeb3c2 2017-11-26 stsp return got_error(GOT_ERR_NO_MEM);
514 0ffeb3c2 2017-11-26 stsp SIMPLEQ_INIT(&(*tree)->entries);
516 0ffeb3c2 2017-11-26 stsp while (remain > 0) {
517 0ffeb3c2 2017-11-26 stsp struct got_tree_entry *te;
518 0ffeb3c2 2017-11-26 stsp size_t elen;
520 0ffeb3c2 2017-11-26 stsp parse_tree_entry(&te, &elen, buf, remain);
521 0ffeb3c2 2017-11-26 stsp (*tree)->nentries++;
522 0ffeb3c2 2017-11-26 stsp SIMPLEQ_INSERT_TAIL(&(*tree)->entries, te, entry);
523 0ffeb3c2 2017-11-26 stsp buf += elen;
524 0ffeb3c2 2017-11-26 stsp remain -= elen;
527 0ffeb3c2 2017-11-26 stsp if (remain != 0) {
528 0ffeb3c2 2017-11-26 stsp got_object_tree_close(*tree);
529 0ffeb3c2 2017-11-26 stsp return got_error(GOT_ERR_BAD_OBJ_DATA);
532 0ffeb3c2 2017-11-26 stsp return NULL;
535 0ffeb3c2 2017-11-26 stsp static const struct got_error *
536 d1cda826 2017-11-06 stsp read_commit_object(struct got_commit_object **commit,
537 d1cda826 2017-11-06 stsp struct got_repository *repo, struct got_object *obj, const char *path)
539 d1cda826 2017-11-06 stsp const struct got_error *err = NULL;
541 d1cda826 2017-11-06 stsp struct got_zstream_buf zb;
542 d1cda826 2017-11-06 stsp size_t len;
544 d1cda826 2017-11-06 stsp int i, ret;
546 d1cda826 2017-11-06 stsp f = fopen(path, "rb");
547 d1cda826 2017-11-06 stsp if (f == NULL)
548 d1cda826 2017-11-06 stsp return got_error(GOT_ERR_BAD_PATH);
550 d1cda826 2017-11-06 stsp err = inflate_init(&zb, 8192);
553 d1cda826 2017-11-06 stsp return err;
557 d1cda826 2017-11-06 stsp err = inflate_read(&zb, f, &len);
558 d1cda826 2017-11-06 stsp if (err || len == 0)
560 d1cda826 2017-11-06 stsp } while (len < obj->hdrlen + obj->size);
562 d1cda826 2017-11-06 stsp if (len < obj->hdrlen + obj->size) {
563 d1cda826 2017-11-06 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
567 d1cda826 2017-11-06 stsp /* Skip object header. */
568 d1cda826 2017-11-06 stsp len -= obj->hdrlen;
569 d1cda826 2017-11-06 stsp err = parse_commit_object(commit, zb.outbuf + obj->hdrlen, len);
571 d1cda826 2017-11-06 stsp inflate_end(&zb);
573 d1cda826 2017-11-06 stsp return err;
576 d1cda826 2017-11-06 stsp const struct got_error *
577 d1cda826 2017-11-06 stsp got_object_commit_open(struct got_commit_object **commit,
578 d1cda826 2017-11-06 stsp struct got_repository *repo, struct got_object *obj)
580 d1cda826 2017-11-06 stsp const struct got_error *err = NULL;
581 d1cda826 2017-11-06 stsp char *path = NULL;
583 d1cda826 2017-11-06 stsp if (obj->type != GOT_OBJ_TYPE_COMMIT)
584 d1cda826 2017-11-06 stsp return got_error(GOT_ERR_OBJ_TYPE);
586 d1cda826 2017-11-06 stsp err = object_path(&path, &obj->id, repo);
588 d1cda826 2017-11-06 stsp return err;
590 d1cda826 2017-11-06 stsp err = read_commit_object(commit, repo, obj, path);
591 d1cda826 2017-11-06 stsp free(path);
592 d1cda826 2017-11-06 stsp return err;
596 d1cda826 2017-11-06 stsp got_object_commit_close(struct got_commit_object *commit)
598 d1cda826 2017-11-06 stsp struct got_parent_id *pid;
600 d1cda826 2017-11-06 stsp while (!SIMPLEQ_EMPTY(&commit->parent_ids)) {
601 d1cda826 2017-11-06 stsp pid = SIMPLEQ_FIRST(&commit->parent_ids);
602 d1cda826 2017-11-06 stsp SIMPLEQ_REMOVE_HEAD(&commit->parent_ids, entry);
606 d1cda826 2017-11-06 stsp free(commit->author);
607 d1cda826 2017-11-06 stsp free(commit->committer);
608 d1cda826 2017-11-06 stsp free(commit->logmsg);
609 d1cda826 2017-11-06 stsp free(commit);
612 0ffeb3c2 2017-11-26 stsp static const struct got_error *
613 0ffeb3c2 2017-11-26 stsp read_tree_object(struct got_tree_object **tree,
614 0ffeb3c2 2017-11-26 stsp struct got_repository *repo, struct got_object *obj, const char *path)
616 0ffeb3c2 2017-11-26 stsp const struct got_error *err = NULL;
618 0ffeb3c2 2017-11-26 stsp struct got_zstream_buf zb;
619 0ffeb3c2 2017-11-26 stsp size_t len;
621 0ffeb3c2 2017-11-26 stsp int i, ret;
623 0ffeb3c2 2017-11-26 stsp f = fopen(path, "rb");
624 0ffeb3c2 2017-11-26 stsp if (f == NULL)
625 0ffeb3c2 2017-11-26 stsp return got_error(GOT_ERR_BAD_PATH);
627 0ffeb3c2 2017-11-26 stsp err = inflate_init(&zb, 8192);
630 0ffeb3c2 2017-11-26 stsp return err;
634 0ffeb3c2 2017-11-26 stsp err = inflate_read(&zb, f, &len);
635 0ffeb3c2 2017-11-26 stsp if (err || len == 0)
637 0ffeb3c2 2017-11-26 stsp } while (len < obj->hdrlen + obj->size);
639 0ffeb3c2 2017-11-26 stsp if (len < obj->hdrlen + obj->size) {
640 0ffeb3c2 2017-11-26 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
644 0ffeb3c2 2017-11-26 stsp /* Skip object header. */
645 0ffeb3c2 2017-11-26 stsp len -= obj->hdrlen;
646 0ffeb3c2 2017-11-26 stsp err = parse_tree_object(tree, repo, zb.outbuf + obj->hdrlen, len);
648 0ffeb3c2 2017-11-26 stsp inflate_end(&zb);
650 0ffeb3c2 2017-11-26 stsp return err;
653 0ffeb3c2 2017-11-26 stsp const struct got_error *
654 0ffeb3c2 2017-11-26 stsp got_object_tree_open(struct got_tree_object **tree,
655 0ffeb3c2 2017-11-26 stsp struct got_repository *repo, struct got_object *obj)
657 0ffeb3c2 2017-11-26 stsp const struct got_error *err = NULL;
658 0ffeb3c2 2017-11-26 stsp char *path = NULL;
660 0ffeb3c2 2017-11-26 stsp if (obj->type != GOT_OBJ_TYPE_TREE)
661 0ffeb3c2 2017-11-26 stsp return got_error(GOT_ERR_OBJ_TYPE);
663 0ffeb3c2 2017-11-26 stsp err = object_path(&path, &obj->id, repo);
665 0ffeb3c2 2017-11-26 stsp return err;
667 0ffeb3c2 2017-11-26 stsp err = read_tree_object(tree, repo, obj, path);
668 0ffeb3c2 2017-11-26 stsp free(path);
669 0ffeb3c2 2017-11-26 stsp return err;
673 0ffeb3c2 2017-11-26 stsp got_object_tree_close(struct got_tree_object *tree)
675 f715ca7f 2017-11-27 stsp struct got_tree_entry *te;
677 f715ca7f 2017-11-27 stsp while (!SIMPLEQ_EMPTY(&tree->entries)) {
678 f715ca7f 2017-11-27 stsp te = SIMPLEQ_FIRST(&tree->entries);
679 f715ca7f 2017-11-27 stsp SIMPLEQ_REMOVE_HEAD(&tree->entries, entry);
680 f715ca7f 2017-11-27 stsp tree_entry_close(te);
683 f715ca7f 2017-11-27 stsp free(tree);
686 68482ea3 2017-11-27 stsp const struct got_error *
687 68482ea3 2017-11-27 stsp got_object_blob_open(struct got_blob_object **blob,
688 68482ea3 2017-11-27 stsp struct got_repository *repo, struct got_object *obj, size_t blocksize)
690 68482ea3 2017-11-27 stsp const struct got_error *err = NULL;
691 68482ea3 2017-11-27 stsp char *path;
693 68482ea3 2017-11-27 stsp if (obj->type != GOT_OBJ_TYPE_BLOB)
694 68482ea3 2017-11-27 stsp return got_error(GOT_ERR_OBJ_TYPE);
696 7d283eee 2017-11-29 stsp if (blocksize < obj->hdrlen)
697 7d283eee 2017-11-29 stsp return got_error(GOT_ERR_NO_SPACE);
699 68482ea3 2017-11-27 stsp err = object_path(&path, &obj->id, repo);
701 68482ea3 2017-11-27 stsp return err;
703 68482ea3 2017-11-27 stsp *blob = calloc(1, sizeof(**blob));
704 68482ea3 2017-11-27 stsp if (*blob == NULL) {
705 68482ea3 2017-11-27 stsp free(path);
706 68482ea3 2017-11-27 stsp return got_error(GOT_ERR_NO_MEM);
709 68482ea3 2017-11-27 stsp (*blob)->f = fopen(path, "rb");
710 68482ea3 2017-11-27 stsp if ((*blob)->f == NULL) {
711 68482ea3 2017-11-27 stsp free(*blob);
712 68482ea3 2017-11-27 stsp free(path);
713 68482ea3 2017-11-27 stsp return got_error(GOT_ERR_BAD_PATH);
716 68482ea3 2017-11-27 stsp err = inflate_init(&(*blob)->zb, blocksize);
717 68482ea3 2017-11-27 stsp if (err != NULL) {
718 68482ea3 2017-11-27 stsp fclose((*blob)->f);
719 68482ea3 2017-11-27 stsp free(*blob);
720 68482ea3 2017-11-27 stsp free(path);
721 68482ea3 2017-11-27 stsp return err;
724 7d283eee 2017-11-29 stsp (*blob)->hdrlen = obj->hdrlen;
725 f78b0693 2017-11-29 stsp memcpy(&(*blob)->id.sha1, obj->id.sha1, SHA1_DIGEST_LENGTH);
727 68482ea3 2017-11-27 stsp free(path);
728 68482ea3 2017-11-27 stsp return err;
732 68482ea3 2017-11-27 stsp got_object_blob_close(struct got_blob_object *blob)
734 68482ea3 2017-11-27 stsp inflate_end(&blob->zb);
735 68482ea3 2017-11-27 stsp fclose(blob->f);
736 68482ea3 2017-11-27 stsp free(blob);
739 68482ea3 2017-11-27 stsp const struct got_error *
740 68482ea3 2017-11-27 stsp got_object_blob_read_block(struct got_blob_object *blob, size_t *outlenp)
742 68482ea3 2017-11-27 stsp return inflate_read(&blob->zb, blob->f, outlenp);