1 d71d75ad 2017-11-05 stsp /*
  2 a1fd68d8 2018-01-12 stsp  * Copyright (c) 2018 Stefan Sperling <stsp@openbsd.org>
  3 d71d75ad 2017-11-05 stsp  *
  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.
  7 d71d75ad 2017-11-05 stsp  *
  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.
 15 d71d75ad 2017-11-05 stsp  */
 16 d71d75ad 2017-11-05 stsp 
 17 0ffeb3c2 2017-11-26 stsp #include <sys/stat.h>
 18 d1cda826 2017-11-06 stsp #include <sys/queue.h>
 19 d1cda826 2017-11-06 stsp 
 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>
 28 d71d75ad 2017-11-05 stsp 
 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 d71d75ad 2017-11-05 stsp 
 33 718b3ab0 2018-03-17 stsp #include "got_lib_sha1.h"
 34 718b3ab0 2018-03-17 stsp #include "got_lib_delta.h"
 35 718b3ab0 2018-03-17 stsp #include "got_lib_pack.h"
 36 718b3ab0 2018-03-17 stsp #include "got_lib_zbuf.h"
 37 718b3ab0 2018-03-17 stsp #include "got_lib_object.h"
 38 1411938b 2018-02-12 stsp 
 39 ab9a70b2 2017-11-06 stsp #ifndef MIN
 40 ab9a70b2 2017-11-06 stsp #define	MIN(_a,_b) ((_a) < (_b) ? (_a) : (_b))
 41 ab9a70b2 2017-11-06 stsp #endif
 42 ab9a70b2 2017-11-06 stsp 
 43 ab9a70b2 2017-11-06 stsp #ifndef nitems
 44 ab9a70b2 2017-11-06 stsp #define nitems(_a) (sizeof(_a) / sizeof((_a)[0]))
 45 ab9a70b2 2017-11-06 stsp #endif
 46 ab9a70b2 2017-11-06 stsp 
 47 ab9a70b2 2017-11-06 stsp #define GOT_OBJ_TAG_COMMIT	"commit"
 48 ab9a70b2 2017-11-06 stsp #define GOT_OBJ_TAG_TREE	"tree"
 49 ab9a70b2 2017-11-06 stsp #define GOT_OBJ_TAG_BLOB	"blob"
 50 ab9a70b2 2017-11-06 stsp 
 51 d1cda826 2017-11-06 stsp #define GOT_COMMIT_TAG_TREE		"tree "
 52 d1cda826 2017-11-06 stsp #define GOT_COMMIT_TAG_PARENT		"parent "
 53 d1cda826 2017-11-06 stsp #define GOT_COMMIT_TAG_AUTHOR		"author "
 54 d1cda826 2017-11-06 stsp #define GOT_COMMIT_TAG_COMMITTER	"committer "
 55 d1cda826 2017-11-06 stsp 
 56 ef0981d5 2018-02-12 stsp const struct got_error *
 57 ef0981d5 2018-02-12 stsp got_object_id_str(char **outbuf, struct got_object_id *id)
 58 d71d75ad 2017-11-05 stsp {
 59 ef0981d5 2018-02-12 stsp 	static const size_t len = SHA1_DIGEST_STRING_LENGTH;
 60 ef0981d5 2018-02-12 stsp 
 61 ef0981d5 2018-02-12 stsp 	*outbuf = calloc(1, len);
 62 ef0981d5 2018-02-12 stsp 	if (*outbuf == NULL)
 63 0a585a0d 2018-03-17 stsp 		return got_error_from_errno();
 64 ef0981d5 2018-02-12 stsp 
 65 ef0981d5 2018-02-12 stsp 	if (got_sha1_digest_to_str(id->sha1, *outbuf, len) == NULL) {
 66 ef0981d5 2018-02-12 stsp 		free(*outbuf);
 67 ef0981d5 2018-02-12 stsp 		*outbuf = NULL;
 68 ef0981d5 2018-02-12 stsp 		return got_error(GOT_ERR_BAD_OBJ_ID_STR);
 69 ef0981d5 2018-02-12 stsp 	}
 70 ef0981d5 2018-02-12 stsp 
 71 ef0981d5 2018-02-12 stsp 	return NULL;
 72 59ece79d 2018-02-12 stsp }
 73 59ece79d 2018-02-12 stsp 
 74 a1fd68d8 2018-01-12 stsp int
 75 a1fd68d8 2018-01-12 stsp got_object_id_cmp(struct got_object_id *id1, struct got_object_id *id2)
 76 a1fd68d8 2018-01-12 stsp {
 77 a1fd68d8 2018-01-12 stsp 	return memcmp(id1->sha1, id2->sha1, SHA1_DIGEST_LENGTH);
 78 8bf5b3c9 2018-03-17 stsp }
 79 8bf5b3c9 2018-03-17 stsp 
 80 8bf5b3c9 2018-03-17 stsp struct got_object_id *
 81 8bf5b3c9 2018-03-17 stsp got_object_id_dup(struct got_object_id *id1)
 82 8bf5b3c9 2018-03-17 stsp {
 83 8bf5b3c9 2018-03-17 stsp 	struct got_object_id *id2;
 84 8bf5b3c9 2018-03-17 stsp 
 85 8bf5b3c9 2018-03-17 stsp 	id2 = malloc(sizeof(*id2));
 86 8bf5b3c9 2018-03-17 stsp 	if (id2 == NULL)
 87 8bf5b3c9 2018-03-17 stsp 		return NULL;
 88 8bf5b3c9 2018-03-17 stsp 	memcpy(id2, id1, sizeof(*id2));
 89 8bf5b3c9 2018-03-17 stsp 	return id2;
 90 a1fd68d8 2018-01-12 stsp }
 91 d71d75ad 2017-11-05 stsp 
 92 b107e67f 2018-01-19 stsp int
 93 b107e67f 2018-01-19 stsp got_object_get_type(struct got_object *obj)
 94 a1fd68d8 2018-01-12 stsp {
 95 b107e67f 2018-01-19 stsp 	switch (obj->type) {
 96 a1fd68d8 2018-01-12 stsp 	case GOT_OBJ_TYPE_COMMIT:
 97 a1fd68d8 2018-01-12 stsp 	case GOT_OBJ_TYPE_TREE:
 98 a1fd68d8 2018-01-12 stsp 	case GOT_OBJ_TYPE_BLOB:
 99 b107e67f 2018-01-19 stsp 	case GOT_OBJ_TYPE_TAG:
100 b107e67f 2018-01-19 stsp 		return obj->type;
101 96f5e8b3 2018-01-23 stsp 	default:
102 96f5e8b3 2018-01-23 stsp 		abort();
103 96f5e8b3 2018-01-23 stsp 		break;
104 d71d75ad 2017-11-05 stsp 	}
105 d71d75ad 2017-11-05 stsp 
106 96f5e8b3 2018-01-23 stsp 	/* not reached */
107 96f5e8b3 2018-01-23 stsp 	return 0;
108 d71d75ad 2017-11-05 stsp }
109 ab9a70b2 2017-11-06 stsp 
110 ab9a70b2 2017-11-06 stsp static const struct got_error *
111 d1cda826 2017-11-06 stsp parse_object_header(struct got_object **obj, char *buf, size_t len)
112 ab9a70b2 2017-11-06 stsp {
113 ab9a70b2 2017-11-06 stsp 	const char *obj_tags[] = {
114 ab9a70b2 2017-11-06 stsp 		GOT_OBJ_TAG_COMMIT,
115 ab9a70b2 2017-11-06 stsp 		GOT_OBJ_TAG_TREE,
116 ab9a70b2 2017-11-06 stsp 		GOT_OBJ_TAG_BLOB
117 ab9a70b2 2017-11-06 stsp 	};
118 ab9a70b2 2017-11-06 stsp 	const int obj_types[] = {
119 ab9a70b2 2017-11-06 stsp 		GOT_OBJ_TYPE_COMMIT,
120 ab9a70b2 2017-11-06 stsp 		GOT_OBJ_TYPE_TREE,
121 ab9a70b2 2017-11-06 stsp 		GOT_OBJ_TYPE_BLOB,
122 ab9a70b2 2017-11-06 stsp 	};
123 ab9a70b2 2017-11-06 stsp 	int type = 0;
124 d1cda826 2017-11-06 stsp 	size_t size = 0, hdrlen = 0;
125 ab9a70b2 2017-11-06 stsp 	int i;
126 ab9a70b2 2017-11-06 stsp 	char *p = strchr(buf, '\0');
127 ab9a70b2 2017-11-06 stsp 
128 ab9a70b2 2017-11-06 stsp 	if (p == NULL)
129 ab9a70b2 2017-11-06 stsp 		return got_error(GOT_ERR_BAD_OBJ_HDR);
130 ab9a70b2 2017-11-06 stsp 
131 d1cda826 2017-11-06 stsp 	hdrlen = strlen(buf) + 1 /* '\0' */;
132 d1cda826 2017-11-06 stsp 
133 ab9a70b2 2017-11-06 stsp 	for (i = 0; i < nitems(obj_tags); i++) {
134 ab9a70b2 2017-11-06 stsp 		const char *tag = obj_tags[i];
135 63323519 2017-11-06 stsp 		size_t tlen = strlen(tag);
136 ab9a70b2 2017-11-06 stsp 		const char *errstr;
137 ab9a70b2 2017-11-06 stsp 
138 63323519 2017-11-06 stsp 		if (strncmp(buf, tag, tlen) != 0)
139 ab9a70b2 2017-11-06 stsp 			continue;
140 ab9a70b2 2017-11-06 stsp 
141 ab9a70b2 2017-11-06 stsp 		type = obj_types[i];
142 63323519 2017-11-06 stsp 		if (len <= tlen)
143 ab9a70b2 2017-11-06 stsp 			return got_error(GOT_ERR_BAD_OBJ_HDR);
144 63323519 2017-11-06 stsp 		size = strtonum(buf + tlen, 0, LONG_MAX, &errstr);
145 ab9a70b2 2017-11-06 stsp 		if (errstr != NULL)
146 ab9a70b2 2017-11-06 stsp 			return got_error(GOT_ERR_BAD_OBJ_HDR);
147 ab9a70b2 2017-11-06 stsp 		break;
148 ab9a70b2 2017-11-06 stsp 	}
149 ab9a70b2 2017-11-06 stsp 
150 ab9a70b2 2017-11-06 stsp 	if (type == 0)
151 ab9a70b2 2017-11-06 stsp 		return got_error(GOT_ERR_BAD_OBJ_HDR);
152 ab9a70b2 2017-11-06 stsp 
153 ab9a70b2 2017-11-06 stsp 	*obj = calloc(1, sizeof(**obj));
154 1db76ab5 2018-01-26 mpi 	if (*obj == NULL)
155 0a585a0d 2018-03-17 stsp 		return got_error_from_errno();
156 ab9a70b2 2017-11-06 stsp 	(*obj)->type = type;
157 d1cda826 2017-11-06 stsp 	(*obj)->hdrlen = hdrlen;
158 ab9a70b2 2017-11-06 stsp 	(*obj)->size = size;
159 ab9a70b2 2017-11-06 stsp 	return NULL;
160 ab9a70b2 2017-11-06 stsp }
161 ab9a70b2 2017-11-06 stsp 
162 ab9a70b2 2017-11-06 stsp static const struct got_error *
163 ab9a70b2 2017-11-06 stsp read_object_header(struct got_object **obj, struct got_repository *repo,
164 a1fd68d8 2018-01-12 stsp     FILE *f)
165 ab9a70b2 2017-11-06 stsp {
166 ab9a70b2 2017-11-06 stsp 	const struct got_error *err;
167 ab9a70b2 2017-11-06 stsp 	struct got_zstream_buf zb;
168 a3e2cbea 2017-12-01 stsp 	char *buf;
169 a3e2cbea 2017-12-01 stsp 	const size_t zbsize = 64;
170 744d9326 2017-12-01 stsp 	size_t outlen, totlen;
171 25783624 2018-03-12 stsp 	int i;
172 ab9a70b2 2017-11-06 stsp 
173 744d9326 2017-12-01 stsp 	buf = calloc(zbsize, sizeof(char));
174 a3e2cbea 2017-12-01 stsp 	if (buf == NULL)
175 0a585a0d 2018-03-17 stsp 		return got_error_from_errno();
176 a3e2cbea 2017-12-01 stsp 
177 19d747f7 2018-03-16 stsp 	err = got_inflate_init(&zb, NULL, zbsize);
178 a1fd68d8 2018-01-12 stsp 	if (err)
179 ab9a70b2 2017-11-06 stsp 		return err;
180 ab9a70b2 2017-11-06 stsp 
181 a3e2cbea 2017-12-01 stsp 	i = 0;
182 744d9326 2017-12-01 stsp 	totlen = 0;
183 a3e2cbea 2017-12-01 stsp 	do {
184 126ee060 2018-02-11 stsp 		err = got_inflate_read(&zb, f, &outlen);
185 a3e2cbea 2017-12-01 stsp 		if (err)
186 a3e2cbea 2017-12-01 stsp 			goto done;
187 e302c59e 2017-12-01 stsp 		if (strchr(zb.outbuf, '\0') == NULL) {
188 a3e2cbea 2017-12-01 stsp 			buf = recallocarray(buf, 1 + i, 2 + i, zbsize);
189 e302c59e 2017-12-01 stsp 			if (buf == NULL) {
190 0a585a0d 2018-03-17 stsp 				err = got_error_from_errno();
191 e302c59e 2017-12-01 stsp 				goto done;
192 e302c59e 2017-12-01 stsp 			}
193 e302c59e 2017-12-01 stsp 		}
194 c56976de 2017-12-01 stsp 		memcpy(buf + totlen, zb.outbuf, outlen);
195 744d9326 2017-12-01 stsp 		totlen += outlen;
196 a3e2cbea 2017-12-01 stsp 		i++;
197 a3e2cbea 2017-12-01 stsp 	} while (strchr(zb.outbuf, '\0') == NULL);
198 ab9a70b2 2017-11-06 stsp 
199 744d9326 2017-12-01 stsp 	err = parse_object_header(obj, buf, totlen);
200 ab9a70b2 2017-11-06 stsp done:
201 4ca7b755 2018-01-26 stsp 	got_inflate_end(&zb);
202 ab9a70b2 2017-11-06 stsp 	return err;
203 ab9a70b2 2017-11-06 stsp }
204 ab9a70b2 2017-11-06 stsp 
205 d1cda826 2017-11-06 stsp static const struct got_error *
206 4558fcd4 2018-01-14 stsp object_path(char **path, struct got_object_id *id, struct got_repository *repo)
207 ab9a70b2 2017-11-06 stsp {
208 ab9a70b2 2017-11-06 stsp 	const struct got_error *err = NULL;
209 ef0981d5 2018-02-12 stsp 	char *hex;
210 d1cda826 2017-11-06 stsp 	char *path_objects = got_repo_get_path_objects(repo);
211 ab9a70b2 2017-11-06 stsp 
212 ab9a70b2 2017-11-06 stsp 	if (path_objects == NULL)
213 0a585a0d 2018-03-17 stsp 		return got_error_from_errno();
214 ab9a70b2 2017-11-06 stsp 
215 ef0981d5 2018-02-12 stsp 	err = got_object_id_str(&hex, id);
216 ef0981d5 2018-02-12 stsp 	if (err)
217 ef0981d5 2018-02-12 stsp 		return err;
218 ab9a70b2 2017-11-06 stsp 
219 d1cda826 2017-11-06 stsp 	if (asprintf(path, "%s/%.2x/%s", path_objects,
220 d1cda826 2017-11-06 stsp 	    id->sha1[0], hex + 2) == -1)
221 0a585a0d 2018-03-17 stsp 		err = got_error_from_errno();
222 ab9a70b2 2017-11-06 stsp 
223 ef0981d5 2018-02-12 stsp 	free(hex);
224 d1cda826 2017-11-06 stsp 	free(path_objects);
225 d1cda826 2017-11-06 stsp 	return err;
226 d1cda826 2017-11-06 stsp }
227 d1cda826 2017-11-06 stsp 
228 4ee4114f 2018-01-23 stsp static const struct got_error *
229 eb651edf 2018-02-11 stsp open_loose_object(FILE **f, struct got_object *obj, struct got_repository *repo)
230 d1cda826 2017-11-06 stsp {
231 d1cda826 2017-11-06 stsp 	const struct got_error *err = NULL;
232 a1fd68d8 2018-01-12 stsp 	char *path;
233 6c00b545 2018-01-17 stsp 
234 6c00b545 2018-01-17 stsp 	err = object_path(&path, &obj->id, repo);
235 d1cda826 2017-11-06 stsp 	if (err)
236 d1cda826 2017-11-06 stsp 		return err;
237 4558fcd4 2018-01-14 stsp 	*f = fopen(path, "rb");
238 4558fcd4 2018-01-14 stsp 	if (*f == NULL) {
239 6c00b545 2018-01-17 stsp 		err = got_error_from_errno();
240 6c00b545 2018-01-17 stsp 		goto done;
241 a1fd68d8 2018-01-12 stsp 	}
242 4558fcd4 2018-01-14 stsp done:
243 4558fcd4 2018-01-14 stsp 	free(path);
244 4558fcd4 2018-01-14 stsp 	return err;
245 4558fcd4 2018-01-14 stsp }
246 a1fd68d8 2018-01-12 stsp 
247 4558fcd4 2018-01-14 stsp const struct got_error *
248 4558fcd4 2018-01-14 stsp got_object_open(struct got_object **obj, struct got_repository *repo,
249 4558fcd4 2018-01-14 stsp     struct got_object_id *id)
250 4558fcd4 2018-01-14 stsp {
251 6c00b545 2018-01-17 stsp 	const struct got_error *err = NULL;
252 6c00b545 2018-01-17 stsp 	char *path;
253 4558fcd4 2018-01-14 stsp 	FILE *f;
254 4558fcd4 2018-01-14 stsp 
255 6c00b545 2018-01-17 stsp 	err = object_path(&path, id, repo);
256 4558fcd4 2018-01-14 stsp 	if (err)
257 4558fcd4 2018-01-14 stsp 		return err;
258 4558fcd4 2018-01-14 stsp 
259 6c00b545 2018-01-17 stsp 	f = fopen(path, "rb");
260 6c00b545 2018-01-17 stsp 	if (f == NULL) {
261 6c00b545 2018-01-17 stsp 		if (errno != ENOENT) {
262 6c00b545 2018-01-17 stsp 			err = got_error_from_errno();
263 6c00b545 2018-01-17 stsp 			goto done;
264 6c00b545 2018-01-17 stsp 		}
265 6c00b545 2018-01-17 stsp 		err = got_packfile_open_object(obj, id, repo);
266 6c00b545 2018-01-17 stsp 		if (err)
267 6c00b545 2018-01-17 stsp 			goto done;
268 6c00b545 2018-01-17 stsp 		if (*obj == NULL)
269 6c00b545 2018-01-17 stsp 			err = got_error(GOT_ERR_NO_OBJ);
270 6c00b545 2018-01-17 stsp 	} else {
271 6c00b545 2018-01-17 stsp 		err = read_object_header(obj, repo, f);
272 6c00b545 2018-01-17 stsp 		if (err)
273 6c00b545 2018-01-17 stsp 			goto done;
274 ab9a70b2 2017-11-06 stsp 		memcpy((*obj)->id.sha1, id->sha1, SHA1_DIGEST_LENGTH);
275 6c00b545 2018-01-17 stsp 	}
276 6c00b545 2018-01-17 stsp done:
277 6c00b545 2018-01-17 stsp 	free(path);
278 18e99ab6 2018-03-17 stsp 	if (f)
279 a1fd68d8 2018-01-12 stsp 		fclose(f);
280 ab9a70b2 2017-11-06 stsp 	return err;
281 6c00b545 2018-01-17 stsp 
282 ab9a70b2 2017-11-06 stsp }
283 ab9a70b2 2017-11-06 stsp 
284 6dfa2fd3 2018-02-12 stsp const struct got_error *
285 6dfa2fd3 2018-02-12 stsp got_object_open_by_id_str(struct got_object **obj, struct got_repository *repo,
286 6dfa2fd3 2018-02-12 stsp     const char *id_str)
287 6dfa2fd3 2018-02-12 stsp {
288 6dfa2fd3 2018-02-12 stsp 	struct got_object_id id;
289 6dfa2fd3 2018-02-12 stsp 
290 6dfa2fd3 2018-02-12 stsp 	if (!got_parse_sha1_digest(id.sha1, id_str))
291 6dfa2fd3 2018-02-12 stsp 		return got_error(GOT_ERR_BAD_OBJ_ID_STR);
292 6dfa2fd3 2018-02-12 stsp 
293 6dfa2fd3 2018-02-12 stsp 	return got_object_open(obj, repo, &id);
294 6dfa2fd3 2018-02-12 stsp }
295 6dfa2fd3 2018-02-12 stsp 
296 ab9a70b2 2017-11-06 stsp void
297 ab9a70b2 2017-11-06 stsp got_object_close(struct got_object *obj)
298 ab9a70b2 2017-11-06 stsp {
299 96f5e8b3 2018-01-23 stsp 	if (obj->flags & GOT_OBJ_FLAG_DELTIFIED) {
300 c3703302 2018-01-23 stsp 		struct got_delta *delta;
301 96f5e8b3 2018-01-23 stsp 		while (!SIMPLEQ_EMPTY(&obj->deltas.entries)) {
302 c3703302 2018-01-23 stsp 			delta = SIMPLEQ_FIRST(&obj->deltas.entries);
303 96f5e8b3 2018-01-23 stsp 			SIMPLEQ_REMOVE_HEAD(&obj->deltas.entries, entry);
304 c3703302 2018-01-23 stsp 			got_delta_close(delta);
305 96f5e8b3 2018-01-23 stsp 		}
306 96f5e8b3 2018-01-23 stsp 	}
307 96f5e8b3 2018-01-23 stsp 	if (obj->flags & GOT_OBJ_FLAG_PACKED)
308 96f5e8b3 2018-01-23 stsp 		free(obj->path_packfile);
309 ab9a70b2 2017-11-06 stsp 	free(obj);
310 d1cda826 2017-11-06 stsp }
311 d1cda826 2017-11-06 stsp 
312 d1cda826 2017-11-06 stsp static const struct got_error *
313 d1cda826 2017-11-06 stsp parse_commit_object(struct got_commit_object **commit, char *buf, size_t len)
314 d1cda826 2017-11-06 stsp {
315 d1cda826 2017-11-06 stsp 	const struct got_error *err = NULL;
316 d1cda826 2017-11-06 stsp 	char *s = buf;
317 d1cda826 2017-11-06 stsp 	size_t tlen;
318 d1cda826 2017-11-06 stsp 	ssize_t remain = (ssize_t)len;
319 d1cda826 2017-11-06 stsp  
320 d1cda826 2017-11-06 stsp 	*commit = calloc(1, sizeof(**commit));
321 d1cda826 2017-11-06 stsp 	if (*commit == NULL)
322 0a585a0d 2018-03-17 stsp 		return got_error_from_errno();
323 59ece79d 2018-02-12 stsp 	(*commit)->tree_id = calloc(1, sizeof(*(*commit)->tree_id));
324 59ece79d 2018-02-12 stsp 	if ((*commit)->tree_id == NULL) {
325 0a585a0d 2018-03-17 stsp 		err = got_error_from_errno();
326 59ece79d 2018-02-12 stsp 		free(*commit);
327 59ece79d 2018-02-12 stsp 		*commit = NULL;
328 0a585a0d 2018-03-17 stsp 		return err;
329 59ece79d 2018-02-12 stsp 	}
330 d1cda826 2017-11-06 stsp 
331 d1cda826 2017-11-06 stsp 	SIMPLEQ_INIT(&(*commit)->parent_ids);
332 d1cda826 2017-11-06 stsp 
333 d1cda826 2017-11-06 stsp 	tlen = strlen(GOT_COMMIT_TAG_TREE);
334 d1cda826 2017-11-06 stsp 	if (strncmp(s, GOT_COMMIT_TAG_TREE, tlen) == 0) {
335 d1cda826 2017-11-06 stsp 		remain -= tlen;
336 d1cda826 2017-11-06 stsp 		if (remain < SHA1_DIGEST_STRING_LENGTH) {
337 d1cda826 2017-11-06 stsp 			err = got_error(GOT_ERR_BAD_OBJ_DATA);
338 d1cda826 2017-11-06 stsp 			goto done;
339 d1cda826 2017-11-06 stsp 		}
340 d1cda826 2017-11-06 stsp 		s += tlen;
341 59ece79d 2018-02-12 stsp 		if (!got_parse_sha1_digest((*commit)->tree_id->sha1, s)) {
342 d1cda826 2017-11-06 stsp 			err = got_error(GOT_ERR_BAD_OBJ_DATA);
343 d1cda826 2017-11-06 stsp 			goto done;
344 d1cda826 2017-11-06 stsp 		}
345 d1cda826 2017-11-06 stsp 		remain -= SHA1_DIGEST_STRING_LENGTH;
346 d1cda826 2017-11-06 stsp 		s += SHA1_DIGEST_STRING_LENGTH;
347 d1cda826 2017-11-06 stsp 	} else {
348 d1cda826 2017-11-06 stsp 		err = got_error(GOT_ERR_BAD_OBJ_DATA);
349 d1cda826 2017-11-06 stsp 		goto done;
350 d1cda826 2017-11-06 stsp 	}
351 d1cda826 2017-11-06 stsp 
352 d1cda826 2017-11-06 stsp 	tlen = strlen(GOT_COMMIT_TAG_PARENT);
353 d1cda826 2017-11-06 stsp 	while (strncmp(s, GOT_COMMIT_TAG_PARENT, tlen) == 0) {
354 d1cda826 2017-11-06 stsp 		struct got_parent_id *pid;
355 d1cda826 2017-11-06 stsp 
356 d1cda826 2017-11-06 stsp 		remain -= tlen;
357 d1cda826 2017-11-06 stsp 		if (remain < SHA1_DIGEST_STRING_LENGTH) {
358 d1cda826 2017-11-06 stsp 			err = got_error(GOT_ERR_BAD_OBJ_DATA);
359 d1cda826 2017-11-06 stsp 			goto done;
360 ef0981d5 2018-02-12 stsp 		}
361 d1cda826 2017-11-06 stsp 
362 d1cda826 2017-11-06 stsp 		pid = calloc(1, sizeof(*pid));
363 d1cda826 2017-11-06 stsp 		if (pid == NULL) {
364 0a585a0d 2018-03-17 stsp 			err = got_error_from_errno();
365 d1cda826 2017-11-06 stsp 			goto done;
366 d1cda826 2017-11-06 stsp 		}
367 59ece79d 2018-02-12 stsp 		pid->id = calloc(1, sizeof(*pid->id));
368 59ece79d 2018-02-12 stsp 		if (pid->id == NULL) {
369 0a585a0d 2018-03-17 stsp 			err = got_error_from_errno();
370 59ece79d 2018-02-12 stsp 			free(pid);
371 59ece79d 2018-02-12 stsp 			goto done;
372 59ece79d 2018-02-12 stsp 		}
373 59ece79d 2018-02-12 stsp 		s += tlen;
374 59ece79d 2018-02-12 stsp 		if (!got_parse_sha1_digest(pid->id->sha1, s)) {
375 d1cda826 2017-11-06 stsp 			err = got_error(GOT_ERR_BAD_OBJ_DATA);
376 59ece79d 2018-02-12 stsp 			free(pid->id);
377 59ece79d 2018-02-12 stsp 			free(pid);
378 d1cda826 2017-11-06 stsp 			goto done;
379 d1cda826 2017-11-06 stsp 		}
380 d1cda826 2017-11-06 stsp 		SIMPLEQ_INSERT_TAIL(&(*commit)->parent_ids, pid, entry);
381 d1cda826 2017-11-06 stsp 		(*commit)->nparents++;
382 d1cda826 2017-11-06 stsp 
383 eb651edf 2018-02-11 stsp 		remain -= SHA1_DIGEST_STRING_LENGTH;
384 d1cda826 2017-11-06 stsp 		s += SHA1_DIGEST_STRING_LENGTH;
385 d1cda826 2017-11-06 stsp 	}
386 d1cda826 2017-11-06 stsp 
387 d1cda826 2017-11-06 stsp 	tlen = strlen(GOT_COMMIT_TAG_AUTHOR);
388 d1cda826 2017-11-06 stsp 	if (strncmp(s, GOT_COMMIT_TAG_AUTHOR, tlen) == 0) {
389 d1cda826 2017-11-06 stsp 		char *p;
390 d1cda826 2017-11-06 stsp 
391 d1cda826 2017-11-06 stsp 		remain -= tlen;
392 d1cda826 2017-11-06 stsp 		if (remain <= 0) {
393 d1cda826 2017-11-06 stsp 			err = got_error(GOT_ERR_BAD_OBJ_DATA);
394 d1cda826 2017-11-06 stsp 			goto done;
395 d1cda826 2017-11-06 stsp 		}
396 d1cda826 2017-11-06 stsp 		s += tlen;
397 d1cda826 2017-11-06 stsp 		p = strchr(s, '\n');
398 d1cda826 2017-11-06 stsp 		if (p == NULL) {
399 d1cda826 2017-11-06 stsp 			err = got_error(GOT_ERR_BAD_OBJ_DATA);
400 d1cda826 2017-11-06 stsp 			goto done;
401 d1cda826 2017-11-06 stsp 		}
402 d1cda826 2017-11-06 stsp 		*p = '\0';
403 d1cda826 2017-11-06 stsp 		(*commit)->author = strdup(s);
404 d1cda826 2017-11-06 stsp 		if ((*commit)->author == NULL) {
405 0a585a0d 2018-03-17 stsp 			err = got_error_from_errno();
406 d1cda826 2017-11-06 stsp 			goto done;
407 d1cda826 2017-11-06 stsp 		}
408 d1cda826 2017-11-06 stsp 		s += strlen((*commit)->author) + 1;
409 eb651edf 2018-02-11 stsp 		remain -= strlen((*commit)->author) + 1;
410 d1cda826 2017-11-06 stsp 	}
411 d1cda826 2017-11-06 stsp 
412 d1cda826 2017-11-06 stsp 	tlen = strlen(GOT_COMMIT_TAG_COMMITTER);
413 d1cda826 2017-11-06 stsp 	if (strncmp(s, GOT_COMMIT_TAG_COMMITTER, tlen) == 0) {
414 d1cda826 2017-11-06 stsp 		char *p;
415 d1cda826 2017-11-06 stsp 
416 d1cda826 2017-11-06 stsp 		remain -= tlen;
417 d1cda826 2017-11-06 stsp 		if (remain <= 0) {
418 d1cda826 2017-11-06 stsp 			err = got_error(GOT_ERR_BAD_OBJ_DATA);
419 d1cda826 2017-11-06 stsp 			goto done;
420 d1cda826 2017-11-06 stsp 		}
421 d1cda826 2017-11-06 stsp 		s += tlen;
422 d1cda826 2017-11-06 stsp 		p = strchr(s, '\n');
423 d1cda826 2017-11-06 stsp 		if (p == NULL) {
424 d1cda826 2017-11-06 stsp 			err = got_error(GOT_ERR_BAD_OBJ_DATA);
425 d1cda826 2017-11-06 stsp 			goto done;
426 d1cda826 2017-11-06 stsp 		}
427 d1cda826 2017-11-06 stsp 		*p = '\0';
428 d1cda826 2017-11-06 stsp 		(*commit)->committer = strdup(s);
429 d1cda826 2017-11-06 stsp 		if ((*commit)->committer == NULL) {
430 0a585a0d 2018-03-17 stsp 			err = got_error_from_errno();
431 d1cda826 2017-11-06 stsp 			goto done;
432 d1cda826 2017-11-06 stsp 		}
433 d1cda826 2017-11-06 stsp 		s += strlen((*commit)->committer) + 1;
434 eb651edf 2018-02-11 stsp 		remain -= strlen((*commit)->committer) + 1;
435 d1cda826 2017-11-06 stsp 	}
436 d1cda826 2017-11-06 stsp 
437 eb651edf 2018-02-11 stsp 	(*commit)->logmsg = strndup(s, remain);
438 eb651edf 2018-02-11 stsp 	if ((*commit)->logmsg == NULL) {
439 0a585a0d 2018-03-17 stsp 		err = got_error_from_errno();
440 eb651edf 2018-02-11 stsp 		goto done;
441 eb651edf 2018-02-11 stsp 	}
442 d1cda826 2017-11-06 stsp done:
443 59ece79d 2018-02-12 stsp 	if (err) {
444 d1cda826 2017-11-06 stsp 		got_object_commit_close(*commit);
445 59ece79d 2018-02-12 stsp 		*commit = NULL;
446 59ece79d 2018-02-12 stsp 	}
447 0ffeb3c2 2017-11-26 stsp 	return err;
448 0ffeb3c2 2017-11-26 stsp }
449 0ffeb3c2 2017-11-26 stsp 
450 0ffeb3c2 2017-11-26 stsp static void
451 0ffeb3c2 2017-11-26 stsp tree_entry_close(struct got_tree_entry *te)
452 0ffeb3c2 2017-11-26 stsp {
453 59ece79d 2018-02-12 stsp 	free(te->id);
454 0ffeb3c2 2017-11-26 stsp 	free(te->name);
455 0ffeb3c2 2017-11-26 stsp 	free(te);
456 0ffeb3c2 2017-11-26 stsp }
457 0ffeb3c2 2017-11-26 stsp 
458 0ffeb3c2 2017-11-26 stsp static const struct got_error *
459 0ffeb3c2 2017-11-26 stsp parse_tree_entry(struct got_tree_entry **te, size_t *elen, char *buf,
460 0ffeb3c2 2017-11-26 stsp     size_t maxlen)
461 0ffeb3c2 2017-11-26 stsp {
462 0ffeb3c2 2017-11-26 stsp 	char *p = buf, *space;
463 0ffeb3c2 2017-11-26 stsp 	const struct got_error *err = NULL;
464 0ffeb3c2 2017-11-26 stsp 
465 0ffeb3c2 2017-11-26 stsp 	*te = calloc(1, sizeof(**te));
466 0ffeb3c2 2017-11-26 stsp 	if (*te == NULL)
467 0a585a0d 2018-03-17 stsp 		return got_error_from_errno();
468 59ece79d 2018-02-12 stsp 
469 59ece79d 2018-02-12 stsp 	(*te)->id = calloc(1, sizeof(*(*te)->id));
470 59ece79d 2018-02-12 stsp 	if ((*te)->id == NULL) {
471 0a585a0d 2018-03-17 stsp 		err = got_error_from_errno();
472 59ece79d 2018-02-12 stsp 		free(*te);
473 59ece79d 2018-02-12 stsp 		*te = NULL;
474 0a585a0d 2018-03-17 stsp 		return err;
475 59ece79d 2018-02-12 stsp 	}
476 0ffeb3c2 2017-11-26 stsp 
477 0ffeb3c2 2017-11-26 stsp 	*elen = strlen(buf) + 1;
478 0ffeb3c2 2017-11-26 stsp 	if (*elen > maxlen) {
479 0ffeb3c2 2017-11-26 stsp 		free(*te);
480 59ece79d 2018-02-12 stsp 		*te = NULL;
481 0ffeb3c2 2017-11-26 stsp 		return got_error(GOT_ERR_BAD_OBJ_DATA);
482 0ffeb3c2 2017-11-26 stsp 	}
483 0ffeb3c2 2017-11-26 stsp 
484 0ffeb3c2 2017-11-26 stsp 	space = strchr(buf, ' ');
485 0ffeb3c2 2017-11-26 stsp 	if (space == NULL) {
486 0a585a0d 2018-03-17 stsp 		err = got_error(GOT_ERR_BAD_OBJ_DATA);
487 0ffeb3c2 2017-11-26 stsp 		free(*te);
488 59ece79d 2018-02-12 stsp 		*te = NULL;
489 0a585a0d 2018-03-17 stsp 		return err;
490 0ffeb3c2 2017-11-26 stsp 	}
491 0ffeb3c2 2017-11-26 stsp 	while (*p != ' ') {
492 0ffeb3c2 2017-11-26 stsp 		if (*p < '0' && *p > '7') {
493 0ffeb3c2 2017-11-26 stsp 			err = got_error(GOT_ERR_BAD_OBJ_DATA);
494 0ffeb3c2 2017-11-26 stsp 			goto done;
495 0ffeb3c2 2017-11-26 stsp 		}
496 0ffeb3c2 2017-11-26 stsp 		(*te)->mode <<= 3;
497 0ffeb3c2 2017-11-26 stsp 		(*te)->mode |= *p - '0';
498 0ffeb3c2 2017-11-26 stsp 		p++;
499 0ffeb3c2 2017-11-26 stsp 	}
500 0ffeb3c2 2017-11-26 stsp 
501 0ffeb3c2 2017-11-26 stsp 	(*te)->name = strdup(space + 1);
502 0ffeb3c2 2017-11-26 stsp 	if (*elen > maxlen || maxlen - *elen < SHA1_DIGEST_LENGTH) {
503 0ffeb3c2 2017-11-26 stsp 		err = got_error(GOT_ERR_BAD_OBJ_DATA);
504 0ffeb3c2 2017-11-26 stsp 		goto done;
505 0ffeb3c2 2017-11-26 stsp 	}
506 0ffeb3c2 2017-11-26 stsp 	buf += strlen(buf) + 1;
507 59ece79d 2018-02-12 stsp 	memcpy((*te)->id->sha1, buf, SHA1_DIGEST_LENGTH);
508 0ffeb3c2 2017-11-26 stsp 	*elen += SHA1_DIGEST_LENGTH;
509 0ffeb3c2 2017-11-26 stsp done:
510 59ece79d 2018-02-12 stsp 	if (err) {
511 0ffeb3c2 2017-11-26 stsp 		tree_entry_close(*te);
512 59ece79d 2018-02-12 stsp 		*te = NULL;
513 59ece79d 2018-02-12 stsp 	}
514 d1cda826 2017-11-06 stsp 	return err;
515 d1cda826 2017-11-06 stsp }
516 d1cda826 2017-11-06 stsp 
517 d1cda826 2017-11-06 stsp static const struct got_error *
518 0ffeb3c2 2017-11-26 stsp parse_tree_object(struct got_tree_object **tree, struct got_repository *repo,
519 e0ab43e7 2018-03-16 stsp     uint8_t *buf, size_t len)
520 0ffeb3c2 2017-11-26 stsp {
521 90356acc 2018-01-27 stsp 	const struct got_error *err;
522 0ffeb3c2 2017-11-26 stsp 	size_t remain = len;
523 0ffeb3c2 2017-11-26 stsp 
524 0ffeb3c2 2017-11-26 stsp 	*tree = calloc(1, sizeof(**tree));
525 0ffeb3c2 2017-11-26 stsp 	if (*tree == NULL)
526 0a585a0d 2018-03-17 stsp 		return got_error_from_errno();
527 0ffeb3c2 2017-11-26 stsp 
528 0ffeb3c2 2017-11-26 stsp 	SIMPLEQ_INIT(&(*tree)->entries);
529 0ffeb3c2 2017-11-26 stsp 
530 0ffeb3c2 2017-11-26 stsp 	while (remain > 0) {
531 0ffeb3c2 2017-11-26 stsp 		struct got_tree_entry *te;
532 0ffeb3c2 2017-11-26 stsp 		size_t elen;
533 0ffeb3c2 2017-11-26 stsp 
534 90356acc 2018-01-27 stsp 		err = parse_tree_entry(&te, &elen, buf, remain);
535 90356acc 2018-01-27 stsp 		if (err)
536 90356acc 2018-01-27 stsp 			return err;
537 0ffeb3c2 2017-11-26 stsp 		(*tree)->nentries++;
538 0ffeb3c2 2017-11-26 stsp 		SIMPLEQ_INSERT_TAIL(&(*tree)->entries, te, entry);
539 0ffeb3c2 2017-11-26 stsp 		buf += elen;
540 0ffeb3c2 2017-11-26 stsp 		remain -= elen;
541 0ffeb3c2 2017-11-26 stsp 	}
542 0ffeb3c2 2017-11-26 stsp 
543 0ffeb3c2 2017-11-26 stsp 	if (remain != 0) {
544 0ffeb3c2 2017-11-26 stsp 		got_object_tree_close(*tree);
545 0ffeb3c2 2017-11-26 stsp 		return got_error(GOT_ERR_BAD_OBJ_DATA);
546 0ffeb3c2 2017-11-26 stsp 	}
547 0ffeb3c2 2017-11-26 stsp 
548 0ffeb3c2 2017-11-26 stsp 	return NULL;
549 0ffeb3c2 2017-11-26 stsp }
550 0ffeb3c2 2017-11-26 stsp 
551 0ffeb3c2 2017-11-26 stsp static const struct got_error *
552 eb651edf 2018-02-11 stsp read_to_mem(uint8_t **outbuf, size_t *outlen, FILE *f)
553 eb651edf 2018-02-11 stsp {
554 eb651edf 2018-02-11 stsp 	const struct got_error *err = NULL;
555 eb651edf 2018-02-11 stsp 	static const size_t blocksize = 512;
556 eb651edf 2018-02-11 stsp 	size_t n, total, remain;
557 eb651edf 2018-02-11 stsp 	uint8_t *buf;
558 eb651edf 2018-02-11 stsp 
559 eb651edf 2018-02-11 stsp 	*outbuf = NULL;
560 eb651edf 2018-02-11 stsp 	*outlen = 0;
561 eb651edf 2018-02-11 stsp 
562 eb651edf 2018-02-11 stsp 	buf = calloc(1, blocksize);
563 eb651edf 2018-02-11 stsp 	if (buf == NULL)
564 0a585a0d 2018-03-17 stsp 		return got_error_from_errno();
565 eb651edf 2018-02-11 stsp 
566 eb651edf 2018-02-11 stsp 	remain = blocksize;
567 eb651edf 2018-02-11 stsp 	total = 0;
568 eb651edf 2018-02-11 stsp 	while (1) {
569 eb651edf 2018-02-11 stsp 		if (remain == 0) {
570 eb651edf 2018-02-11 stsp 			uint8_t *newbuf;
571 eb651edf 2018-02-11 stsp 			newbuf = reallocarray(buf, 1, total + blocksize);
572 eb651edf 2018-02-11 stsp 			if (newbuf == NULL) {
573 0a585a0d 2018-03-17 stsp 				err = got_error_from_errno();
574 eb651edf 2018-02-11 stsp 				goto done;
575 eb651edf 2018-02-11 stsp 			}
576 eb651edf 2018-02-11 stsp 			buf = newbuf;
577 eb651edf 2018-02-11 stsp 			remain += blocksize;
578 eb651edf 2018-02-11 stsp 		}
579 be89e2b1 2018-03-03 stsp 		n = fread(buf + total, 1, remain, f);
580 eb651edf 2018-02-11 stsp 		if (n == 0) {
581 eb651edf 2018-02-11 stsp 			if (ferror(f)) {
582 eb651edf 2018-02-11 stsp 				err = got_ferror(f, GOT_ERR_IO);
583 eb651edf 2018-02-11 stsp 				goto done;
584 eb651edf 2018-02-11 stsp 			}
585 eb651edf 2018-02-11 stsp 			break; /* EOF */
586 eb651edf 2018-02-11 stsp 		}
587 eb651edf 2018-02-11 stsp 		remain -= n;
588 eb651edf 2018-02-11 stsp 		total += n;
589 eb651edf 2018-02-11 stsp 	};
590 eb651edf 2018-02-11 stsp 
591 eb651edf 2018-02-11 stsp done:
592 eb651edf 2018-02-11 stsp 	if (err == NULL) {
593 eb651edf 2018-02-11 stsp 		*outbuf = buf;
594 eb651edf 2018-02-11 stsp 		*outlen = total;
595 eb651edf 2018-02-11 stsp 	} else
596 eb651edf 2018-02-11 stsp 		free(buf);
597 eb651edf 2018-02-11 stsp 	return err;
598 eb651edf 2018-02-11 stsp }
599 eb651edf 2018-02-11 stsp 
600 eb651edf 2018-02-11 stsp static const struct got_error *
601 d1cda826 2017-11-06 stsp read_commit_object(struct got_commit_object **commit,
602 4558fcd4 2018-01-14 stsp     struct got_repository *repo, struct got_object *obj, FILE *f)
603 d1cda826 2017-11-06 stsp {
604 d1cda826 2017-11-06 stsp 	const struct got_error *err = NULL;
605 d1cda826 2017-11-06 stsp 	size_t len;
606 eb651edf 2018-02-11 stsp 	uint8_t *p;
607 d1cda826 2017-11-06 stsp 
608 eb651edf 2018-02-11 stsp 	if (obj->flags & GOT_OBJ_FLAG_PACKED)
609 eb651edf 2018-02-11 stsp 		err = read_to_mem(&p, &len, f);
610 eb651edf 2018-02-11 stsp 	else
611 eb651edf 2018-02-11 stsp 		err = got_inflate_to_mem(&p, &len, f);
612 4558fcd4 2018-01-14 stsp 	if (err)
613 d1cda826 2017-11-06 stsp 		return err;
614 d1cda826 2017-11-06 stsp 
615 d1cda826 2017-11-06 stsp 	if (len < obj->hdrlen + obj->size) {
616 d1cda826 2017-11-06 stsp 		err = got_error(GOT_ERR_BAD_OBJ_DATA);
617 d1cda826 2017-11-06 stsp 		goto done;
618 d1cda826 2017-11-06 stsp 	}
619 d1cda826 2017-11-06 stsp 
620 d1cda826 2017-11-06 stsp 	/* Skip object header. */
621 d1cda826 2017-11-06 stsp 	len -= obj->hdrlen;
622 eb651edf 2018-02-11 stsp 	err = parse_commit_object(commit, p + obj->hdrlen, len);
623 eb651edf 2018-02-11 stsp 	free(p);
624 d1cda826 2017-11-06 stsp done:
625 d1cda826 2017-11-06 stsp 	return err;
626 d1cda826 2017-11-06 stsp }
627 d1cda826 2017-11-06 stsp 
628 d1cda826 2017-11-06 stsp const struct got_error *
629 d1cda826 2017-11-06 stsp got_object_commit_open(struct got_commit_object **commit,
630 d1cda826 2017-11-06 stsp     struct got_repository *repo, struct got_object *obj)
631 d1cda826 2017-11-06 stsp {
632 d1cda826 2017-11-06 stsp 	const struct got_error *err = NULL;
633 d1cda826 2017-11-06 stsp 
634 d1cda826 2017-11-06 stsp 	if (obj->type != GOT_OBJ_TYPE_COMMIT)
635 d1cda826 2017-11-06 stsp 		return got_error(GOT_ERR_OBJ_TYPE);
636 d1cda826 2017-11-06 stsp 
637 ea35256b 2018-03-16 stsp 	if (obj->flags & GOT_OBJ_FLAG_PACKED) {
638 ea35256b 2018-03-16 stsp 		uint8_t *buf;
639 ea35256b 2018-03-16 stsp 		size_t len;
640 ea35256b 2018-03-16 stsp 		err = got_packfile_extract_object_to_mem(&buf, &len, obj, repo);
641 ea35256b 2018-03-16 stsp 		if (err)
642 ea35256b 2018-03-16 stsp 			return err;
643 b29656e2 2018-03-16 stsp 		obj->size = len;
644 b29656e2 2018-03-16 stsp 		err = parse_commit_object(commit, buf, len);
645 ea35256b 2018-03-16 stsp 		free(buf);
646 ea35256b 2018-03-16 stsp 	} else {
647 ea35256b 2018-03-16 stsp 		FILE *f;
648 eb651edf 2018-02-11 stsp 		err = open_loose_object(&f, obj, repo);
649 ea35256b 2018-03-16 stsp 		if (err)
650 ea35256b 2018-03-16 stsp 			return err;
651 ea35256b 2018-03-16 stsp 		err = read_commit_object(commit, repo, obj, f);
652 ea35256b 2018-03-16 stsp 		fclose(f);
653 ea35256b 2018-03-16 stsp 	}
654 d1cda826 2017-11-06 stsp 	return err;
655 d1cda826 2017-11-06 stsp }
656 d1cda826 2017-11-06 stsp 
657 d1cda826 2017-11-06 stsp void
658 d1cda826 2017-11-06 stsp got_object_commit_close(struct got_commit_object *commit)
659 d1cda826 2017-11-06 stsp {
660 d1cda826 2017-11-06 stsp 	struct got_parent_id *pid;
661 d1cda826 2017-11-06 stsp 
662 d1cda826 2017-11-06 stsp 	while (!SIMPLEQ_EMPTY(&commit->parent_ids)) {
663 d1cda826 2017-11-06 stsp 		pid = SIMPLEQ_FIRST(&commit->parent_ids);
664 d1cda826 2017-11-06 stsp 		SIMPLEQ_REMOVE_HEAD(&commit->parent_ids, entry);
665 59ece79d 2018-02-12 stsp 		free(pid->id);
666 d1cda826 2017-11-06 stsp 		free(pid);
667 d1cda826 2017-11-06 stsp 	}
668 d1cda826 2017-11-06 stsp 
669 59ece79d 2018-02-12 stsp 	free(commit->tree_id);
670 d1cda826 2017-11-06 stsp 	free(commit->author);
671 d1cda826 2017-11-06 stsp 	free(commit->committer);
672 d1cda826 2017-11-06 stsp 	free(commit->logmsg);
673 d1cda826 2017-11-06 stsp 	free(commit);
674 d1cda826 2017-11-06 stsp }
675 0ffeb3c2 2017-11-26 stsp 
676 0ffeb3c2 2017-11-26 stsp static const struct got_error *
677 0ffeb3c2 2017-11-26 stsp read_tree_object(struct got_tree_object **tree,
678 4558fcd4 2018-01-14 stsp     struct got_repository *repo, struct got_object *obj, FILE *f)
679 0ffeb3c2 2017-11-26 stsp {
680 0ffeb3c2 2017-11-26 stsp 	const struct got_error *err = NULL;
681 0ffeb3c2 2017-11-26 stsp 	size_t len;
682 eb651edf 2018-02-11 stsp 	uint8_t *p;
683 0ffeb3c2 2017-11-26 stsp 
684 eb651edf 2018-02-11 stsp 	if (obj->flags & GOT_OBJ_FLAG_PACKED)
685 eb651edf 2018-02-11 stsp 		err = read_to_mem(&p, &len, f);
686 eb651edf 2018-02-11 stsp 	else
687 eb651edf 2018-02-11 stsp 		err = got_inflate_to_mem(&p, &len, f);
688 4558fcd4 2018-01-14 stsp 	if (err)
689 0ffeb3c2 2017-11-26 stsp 		return err;
690 0ffeb3c2 2017-11-26 stsp 
691 0ffeb3c2 2017-11-26 stsp 	if (len < obj->hdrlen + obj->size) {
692 0ffeb3c2 2017-11-26 stsp 		err = got_error(GOT_ERR_BAD_OBJ_DATA);
693 0ffeb3c2 2017-11-26 stsp 		goto done;
694 0ffeb3c2 2017-11-26 stsp 	}
695 0ffeb3c2 2017-11-26 stsp 
696 0ffeb3c2 2017-11-26 stsp 	/* Skip object header. */
697 0ffeb3c2 2017-11-26 stsp 	len -= obj->hdrlen;
698 eb651edf 2018-02-11 stsp 	err = parse_tree_object(tree, repo, p + obj->hdrlen, len);
699 eb651edf 2018-02-11 stsp 	free(p);
700 0ffeb3c2 2017-11-26 stsp done:
701 0ffeb3c2 2017-11-26 stsp 	return err;
702 0ffeb3c2 2017-11-26 stsp }
703 0ffeb3c2 2017-11-26 stsp 
704 0ffeb3c2 2017-11-26 stsp const struct got_error *
705 0ffeb3c2 2017-11-26 stsp got_object_tree_open(struct got_tree_object **tree,
706 0ffeb3c2 2017-11-26 stsp     struct got_repository *repo, struct got_object *obj)
707 0ffeb3c2 2017-11-26 stsp {
708 0ffeb3c2 2017-11-26 stsp 	const struct got_error *err = NULL;
709 0ffeb3c2 2017-11-26 stsp 
710 0ffeb3c2 2017-11-26 stsp 	if (obj->type != GOT_OBJ_TYPE_TREE)
711 0ffeb3c2 2017-11-26 stsp 		return got_error(GOT_ERR_OBJ_TYPE);
712 0ffeb3c2 2017-11-26 stsp 
713 e0ab43e7 2018-03-16 stsp 	if (obj->flags & GOT_OBJ_FLAG_PACKED) {
714 e0ab43e7 2018-03-16 stsp 		uint8_t *buf;
715 e0ab43e7 2018-03-16 stsp 		size_t len;
716 e0ab43e7 2018-03-16 stsp 		err = got_packfile_extract_object_to_mem(&buf, &len, obj, repo);
717 e0ab43e7 2018-03-16 stsp 		if (err)
718 e0ab43e7 2018-03-16 stsp 			return err;
719 b29656e2 2018-03-16 stsp 		obj->size = len;
720 b29656e2 2018-03-16 stsp 		err = parse_tree_object(tree, repo, buf, len);
721 e0ab43e7 2018-03-16 stsp 		free(buf);
722 e0ab43e7 2018-03-16 stsp 	} else {
723 e0ab43e7 2018-03-16 stsp 		FILE *f;
724 eb651edf 2018-02-11 stsp 		err = open_loose_object(&f, obj, repo);
725 e0ab43e7 2018-03-16 stsp 		if (err)
726 e0ab43e7 2018-03-16 stsp 			return err;
727 e0ab43e7 2018-03-16 stsp 		err = read_tree_object(tree, repo, obj, f);
728 e0ab43e7 2018-03-16 stsp 		fclose(f);
729 e0ab43e7 2018-03-16 stsp 	}
730 0ffeb3c2 2017-11-26 stsp 	return err;
731 0ffeb3c2 2017-11-26 stsp }
732 0ffeb3c2 2017-11-26 stsp 
733 0ffeb3c2 2017-11-26 stsp void
734 0ffeb3c2 2017-11-26 stsp got_object_tree_close(struct got_tree_object *tree)
735 0ffeb3c2 2017-11-26 stsp {
736 f715ca7f 2017-11-27 stsp 	struct got_tree_entry *te;
737 f715ca7f 2017-11-27 stsp 
738 f715ca7f 2017-11-27 stsp 	while (!SIMPLEQ_EMPTY(&tree->entries)) {
739 f715ca7f 2017-11-27 stsp 		te = SIMPLEQ_FIRST(&tree->entries);
740 f715ca7f 2017-11-27 stsp 		SIMPLEQ_REMOVE_HEAD(&tree->entries, entry);
741 f715ca7f 2017-11-27 stsp 		tree_entry_close(te);
742 f715ca7f 2017-11-27 stsp 	}
743 f715ca7f 2017-11-27 stsp 
744 f715ca7f 2017-11-27 stsp 	free(tree);
745 68482ea3 2017-11-27 stsp }
746 68482ea3 2017-11-27 stsp 
747 68482ea3 2017-11-27 stsp const struct got_error *
748 68482ea3 2017-11-27 stsp got_object_blob_open(struct got_blob_object **blob,
749 68482ea3 2017-11-27 stsp     struct got_repository *repo, struct got_object *obj, size_t blocksize)
750 68482ea3 2017-11-27 stsp {
751 68482ea3 2017-11-27 stsp 	const struct got_error *err = NULL;
752 68482ea3 2017-11-27 stsp 
753 68482ea3 2017-11-27 stsp 	if (obj->type != GOT_OBJ_TYPE_BLOB)
754 68482ea3 2017-11-27 stsp 		return got_error(GOT_ERR_OBJ_TYPE);
755 68482ea3 2017-11-27 stsp 
756 7d283eee 2017-11-29 stsp 	if (blocksize < obj->hdrlen)
757 7d283eee 2017-11-29 stsp 		return got_error(GOT_ERR_NO_SPACE);
758 7d283eee 2017-11-29 stsp 
759 68482ea3 2017-11-27 stsp 	*blob = calloc(1, sizeof(**blob));
760 4558fcd4 2018-01-14 stsp 	if (*blob == NULL)
761 0a585a0d 2018-03-17 stsp 		return got_error_from_errno();
762 68482ea3 2017-11-27 stsp 
763 eb651edf 2018-02-11 stsp 	if (obj->flags & GOT_OBJ_FLAG_PACKED) {
764 eb651edf 2018-02-11 stsp 		(*blob)->read_buf = calloc(1, blocksize);
765 56866f4a 2018-03-17 stsp 		if ((*blob)->read_buf == NULL) {
766 0a585a0d 2018-03-17 stsp 			err = got_error_from_errno();
767 56866f4a 2018-03-17 stsp 			free(*blob);
768 56866f4a 2018-03-17 stsp 			*blob = NULL;
769 0a585a0d 2018-03-17 stsp 			return err;
770 56866f4a 2018-03-17 stsp 		}
771 eb651edf 2018-02-11 stsp 		err = got_packfile_extract_object(&((*blob)->f), obj, repo);
772 56866f4a 2018-03-17 stsp 		if (err) {
773 56866f4a 2018-03-17 stsp 			free((*blob)->read_buf);
774 56866f4a 2018-03-17 stsp 			free(*blob);
775 56866f4a 2018-03-17 stsp 			*blob = NULL;
776 eb651edf 2018-02-11 stsp 			return err;
777 56866f4a 2018-03-17 stsp 		}
778 eb651edf 2018-02-11 stsp 	} else {
779 eb651edf 2018-02-11 stsp 		err = open_loose_object(&((*blob)->f), obj, repo);
780 eb651edf 2018-02-11 stsp 		if (err) {
781 eb651edf 2018-02-11 stsp 			free(*blob);
782 d0f3be7c 2018-03-17 stsp 			*blob = NULL;
783 eb651edf 2018-02-11 stsp 			return err;
784 eb651edf 2018-02-11 stsp 		}
785 68482ea3 2017-11-27 stsp 
786 19d747f7 2018-03-16 stsp 		err = got_inflate_init(&(*blob)->zb, NULL, blocksize);
787 eb651edf 2018-02-11 stsp 		if (err != NULL) {
788 eb651edf 2018-02-11 stsp 			fclose((*blob)->f);
789 eb651edf 2018-02-11 stsp 			free(*blob);
790 56866f4a 2018-03-17 stsp 			*blob = NULL;
791 eb651edf 2018-02-11 stsp 			return err;
792 eb651edf 2018-02-11 stsp 		}
793 eb651edf 2018-02-11 stsp 
794 eb651edf 2018-02-11 stsp 		(*blob)->read_buf = (*blob)->zb.outbuf;
795 eb651edf 2018-02-11 stsp 		(*blob)->flags |= GOT_BLOB_F_COMPRESSED;
796 68482ea3 2017-11-27 stsp 	}
797 68482ea3 2017-11-27 stsp 
798 7d283eee 2017-11-29 stsp 	(*blob)->hdrlen = obj->hdrlen;
799 eb651edf 2018-02-11 stsp 	(*blob)->blocksize = blocksize;
800 f78b0693 2017-11-29 stsp 	memcpy(&(*blob)->id.sha1, obj->id.sha1, SHA1_DIGEST_LENGTH);
801 7d283eee 2017-11-29 stsp 
802 68482ea3 2017-11-27 stsp 	return err;
803 0ffeb3c2 2017-11-26 stsp }
804 68482ea3 2017-11-27 stsp 
805 68482ea3 2017-11-27 stsp void
806 68482ea3 2017-11-27 stsp got_object_blob_close(struct got_blob_object *blob)
807 68482ea3 2017-11-27 stsp {
808 eb651edf 2018-02-11 stsp 	if (blob->flags & GOT_BLOB_F_COMPRESSED)
809 eb651edf 2018-02-11 stsp 		got_inflate_end(&blob->zb);
810 eb651edf 2018-02-11 stsp 	else
811 eb651edf 2018-02-11 stsp 		free(blob->read_buf);
812 68482ea3 2017-11-27 stsp 	fclose(blob->f);
813 68482ea3 2017-11-27 stsp 	free(blob);
814 f934cf2c 2018-02-12 stsp }
815 f934cf2c 2018-02-12 stsp 
816 f934cf2c 2018-02-12 stsp char *
817 f934cf2c 2018-02-12 stsp got_object_blob_id_str(struct got_blob_object *blob, char *buf, size_t size)
818 f934cf2c 2018-02-12 stsp {
819 f934cf2c 2018-02-12 stsp 	return got_sha1_digest_to_str(blob->id.sha1, buf, size);
820 f934cf2c 2018-02-12 stsp }
821 f934cf2c 2018-02-12 stsp 
822 f934cf2c 2018-02-12 stsp size_t
823 f934cf2c 2018-02-12 stsp got_object_blob_get_hdrlen(struct got_blob_object *blob)
824 f934cf2c 2018-02-12 stsp {
825 f934cf2c 2018-02-12 stsp 	return blob->hdrlen;
826 68482ea3 2017-11-27 stsp }
827 68482ea3 2017-11-27 stsp 
828 f934cf2c 2018-02-12 stsp const uint8_t *
829 f934cf2c 2018-02-12 stsp got_object_blob_get_read_buf(struct got_blob_object *blob)
830 f934cf2c 2018-02-12 stsp {
831 f934cf2c 2018-02-12 stsp 	return blob->read_buf;
832 f934cf2c 2018-02-12 stsp }
833 f934cf2c 2018-02-12 stsp 
834 68482ea3 2017-11-27 stsp const struct got_error *
835 eb651edf 2018-02-11 stsp got_object_blob_read_block(size_t *outlenp, struct got_blob_object *blob)
836 68482ea3 2017-11-27 stsp {
837 eb651edf 2018-02-11 stsp 	size_t n;
838 eb651edf 2018-02-11 stsp 
839 eb651edf 2018-02-11 stsp 	if (blob->flags & GOT_BLOB_F_COMPRESSED)
840 eb651edf 2018-02-11 stsp 		return got_inflate_read(&blob->zb, blob->f, outlenp);
841 eb651edf 2018-02-11 stsp 
842 eb651edf 2018-02-11 stsp 	n = fread(blob->read_buf, 1, blob->blocksize, blob->f);
843 eb651edf 2018-02-11 stsp 	if (n == 0 && ferror(blob->f))
844 eb651edf 2018-02-11 stsp 		return got_ferror(blob->f, GOT_ERR_IO);
845 eb651edf 2018-02-11 stsp 	*outlenp = n;
846 eb651edf 2018-02-11 stsp 	return NULL;
847 68482ea3 2017-11-27 stsp }