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 d1cda826 2017-11-06 stsp #include "got_sha1.h"
 33 a1fd68d8 2018-01-12 stsp #include "pack.h"
 34 96f5e8b3 2018-01-23 stsp #include "delta.h"
 35 eef6493a 2018-01-19 stsp #include "object.h"
 36 d71d75ad 2017-11-05 stsp 
 37 ab9a70b2 2017-11-06 stsp #ifndef MIN
 38 ab9a70b2 2017-11-06 stsp #define	MIN(_a,_b) ((_a) < (_b) ? (_a) : (_b))
 39 ab9a70b2 2017-11-06 stsp #endif
 40 ab9a70b2 2017-11-06 stsp 
 41 ab9a70b2 2017-11-06 stsp #ifndef nitems
 42 ab9a70b2 2017-11-06 stsp #define nitems(_a) (sizeof(_a) / sizeof((_a)[0]))
 43 ab9a70b2 2017-11-06 stsp #endif
 44 ab9a70b2 2017-11-06 stsp 
 45 ab9a70b2 2017-11-06 stsp #define GOT_OBJ_TAG_COMMIT	"commit"
 46 ab9a70b2 2017-11-06 stsp #define GOT_OBJ_TAG_TREE	"tree"
 47 ab9a70b2 2017-11-06 stsp #define GOT_OBJ_TAG_BLOB	"blob"
 48 ab9a70b2 2017-11-06 stsp 
 49 d1cda826 2017-11-06 stsp #define GOT_COMMIT_TAG_TREE		"tree "
 50 d1cda826 2017-11-06 stsp #define GOT_COMMIT_TAG_PARENT		"parent "
 51 d1cda826 2017-11-06 stsp #define GOT_COMMIT_TAG_AUTHOR		"author "
 52 d1cda826 2017-11-06 stsp #define GOT_COMMIT_TAG_COMMITTER	"committer "
 53 d1cda826 2017-11-06 stsp 
 54 f78b0693 2017-11-29 stsp char *
 55 d71d75ad 2017-11-05 stsp got_object_id_str(struct got_object_id *id, char *buf, size_t size)
 56 d71d75ad 2017-11-05 stsp {
 57 a1fd68d8 2018-01-12 stsp 	return got_sha1_digest_to_str(id->sha1, buf, size);
 58 a1fd68d8 2018-01-12 stsp }
 59 d71d75ad 2017-11-05 stsp 
 60 a1fd68d8 2018-01-12 stsp int
 61 a1fd68d8 2018-01-12 stsp got_object_id_cmp(struct got_object_id *id1, struct got_object_id *id2)
 62 a1fd68d8 2018-01-12 stsp {
 63 a1fd68d8 2018-01-12 stsp 	return memcmp(id1->sha1, id2->sha1, SHA1_DIGEST_LENGTH);
 64 a1fd68d8 2018-01-12 stsp }
 65 d71d75ad 2017-11-05 stsp 
 66 b107e67f 2018-01-19 stsp int
 67 b107e67f 2018-01-19 stsp got_object_get_type(struct got_object *obj)
 68 a1fd68d8 2018-01-12 stsp {
 69 b107e67f 2018-01-19 stsp 	switch (obj->type) {
 70 a1fd68d8 2018-01-12 stsp 	case GOT_OBJ_TYPE_COMMIT:
 71 a1fd68d8 2018-01-12 stsp 	case GOT_OBJ_TYPE_TREE:
 72 a1fd68d8 2018-01-12 stsp 	case GOT_OBJ_TYPE_BLOB:
 73 b107e67f 2018-01-19 stsp 	case GOT_OBJ_TYPE_TAG:
 74 b107e67f 2018-01-19 stsp 		return obj->type;
 75 96f5e8b3 2018-01-23 stsp 	default:
 76 96f5e8b3 2018-01-23 stsp 		abort();
 77 96f5e8b3 2018-01-23 stsp 		break;
 78 d71d75ad 2017-11-05 stsp 	}
 79 d71d75ad 2017-11-05 stsp 
 80 96f5e8b3 2018-01-23 stsp 	/* not reached */
 81 96f5e8b3 2018-01-23 stsp 	return 0;
 82 d71d75ad 2017-11-05 stsp }
 83 ab9a70b2 2017-11-06 stsp 
 84 ab9a70b2 2017-11-06 stsp static void
 85 ab9a70b2 2017-11-06 stsp inflate_end(struct got_zstream_buf *zb)
 86 ab9a70b2 2017-11-06 stsp {
 87 ab9a70b2 2017-11-06 stsp 	free(zb->inbuf);
 88 ab9a70b2 2017-11-06 stsp 	free(zb->outbuf);
 89 ab9a70b2 2017-11-06 stsp 	inflateEnd(&zb->z);
 90 ab9a70b2 2017-11-06 stsp }
 91 ab9a70b2 2017-11-06 stsp 
 92 ab9a70b2 2017-11-06 stsp static const struct got_error *
 93 ab9a70b2 2017-11-06 stsp inflate_init(struct got_zstream_buf *zb, size_t bufsize)
 94 ab9a70b2 2017-11-06 stsp {
 95 ab9a70b2 2017-11-06 stsp 	const struct got_error *err = NULL;
 96 ab9a70b2 2017-11-06 stsp 
 97 ab9a70b2 2017-11-06 stsp 	memset(zb, 0, sizeof(*zb));
 98 ab9a70b2 2017-11-06 stsp 
 99 ab9a70b2 2017-11-06 stsp 	zb->z.zalloc = Z_NULL;
100 ab9a70b2 2017-11-06 stsp 	zb->z.zfree = Z_NULL;
101 ab9a70b2 2017-11-06 stsp 	if (inflateInit(&zb->z) != Z_OK) {
102 ab9a70b2 2017-11-06 stsp 		err = got_error(GOT_ERR_IO);
103 ab9a70b2 2017-11-06 stsp 		goto done;
104 ab9a70b2 2017-11-06 stsp 	}
105 ab9a70b2 2017-11-06 stsp 
106 ab9a70b2 2017-11-06 stsp 	zb->inlen = zb->outlen = bufsize;
107 ab9a70b2 2017-11-06 stsp 
108 ab9a70b2 2017-11-06 stsp 	zb->inbuf = calloc(1, zb->inlen);
109 ab9a70b2 2017-11-06 stsp 	if (zb->inbuf == NULL) {
110 ab9a70b2 2017-11-06 stsp 		err = got_error(GOT_ERR_NO_MEM);
111 ab9a70b2 2017-11-06 stsp 		goto done;
112 ab9a70b2 2017-11-06 stsp 	}
113 ab9a70b2 2017-11-06 stsp 
114 ab9a70b2 2017-11-06 stsp 	zb->outbuf = calloc(1, zb->outlen);
115 ab9a70b2 2017-11-06 stsp 	if (zb->outbuf == NULL) {
116 ab9a70b2 2017-11-06 stsp 		err = got_error(GOT_ERR_NO_MEM);
117 ab9a70b2 2017-11-06 stsp 		goto done;
118 ab9a70b2 2017-11-06 stsp 	}
119 ab9a70b2 2017-11-06 stsp 
120 ab9a70b2 2017-11-06 stsp done:
121 ab9a70b2 2017-11-06 stsp 	if (err)
122 ab9a70b2 2017-11-06 stsp 		inflate_end(zb);
123 ab9a70b2 2017-11-06 stsp 	return err;
124 ab9a70b2 2017-11-06 stsp }
125 ab9a70b2 2017-11-06 stsp 
126 ab9a70b2 2017-11-06 stsp static const struct got_error *
127 ab9a70b2 2017-11-06 stsp inflate_read(struct got_zstream_buf *zb, FILE *f, size_t *outlenp)
128 ab9a70b2 2017-11-06 stsp {
129 ab9a70b2 2017-11-06 stsp 	size_t last_total_out = zb->z.total_out;
130 ab9a70b2 2017-11-06 stsp 	z_stream *z = &zb->z;
131 ab9a70b2 2017-11-06 stsp 	int n, ret;
132 ab9a70b2 2017-11-06 stsp 
133 ab9a70b2 2017-11-06 stsp 	z->next_out = zb->outbuf;
134 ab9a70b2 2017-11-06 stsp 	z->avail_out = zb->outlen;
135 ab9a70b2 2017-11-06 stsp 
136 a3e2cbea 2017-12-01 stsp 	do {
137 a3e2cbea 2017-12-01 stsp 		if (z->avail_in == 0) {
138 a3e2cbea 2017-12-01 stsp 			int i;
139 a3e2cbea 2017-12-01 stsp 			n = fread(zb->inbuf, 1, zb->inlen, f);
140 a3e2cbea 2017-12-01 stsp 			if (n == 0) {
141 a3e2cbea 2017-12-01 stsp 				if (ferror(f))
142 6c00b545 2018-01-17 stsp 					return got_ferror(f, GOT_ERR_IO);
143 a3e2cbea 2017-12-01 stsp 				*outlenp = 0;
144 a3e2cbea 2017-12-01 stsp 				return NULL;
145 a3e2cbea 2017-12-01 stsp 			}
146 a3e2cbea 2017-12-01 stsp 			z->next_in = zb->inbuf;
147 a3e2cbea 2017-12-01 stsp 			z->avail_in = n;
148 ab9a70b2 2017-11-06 stsp 		}
149 a3e2cbea 2017-12-01 stsp 		ret = inflate(z, Z_SYNC_FLUSH);
150 a3e2cbea 2017-12-01 stsp 	} while (ret == Z_OK && z->avail_out > 0);
151 ab9a70b2 2017-11-06 stsp 
152 a3e2cbea 2017-12-01 stsp 	if (ret != Z_OK) {
153 a3e2cbea 2017-12-01 stsp 		if (ret != Z_STREAM_END)
154 a3e2cbea 2017-12-01 stsp 			return got_error(GOT_ERR_DECOMPRESSION);
155 a3e2cbea 2017-12-01 stsp 		zb->flags |= GOT_ZSTREAM_F_HAVE_MORE;
156 a3e2cbea 2017-12-01 stsp 	}
157 ab9a70b2 2017-11-06 stsp 
158 ab9a70b2 2017-11-06 stsp 	*outlenp = z->total_out - last_total_out;
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 d1cda826 2017-11-06 stsp parse_object_header(struct got_object **obj, char *buf, size_t len)
164 ab9a70b2 2017-11-06 stsp {
165 ab9a70b2 2017-11-06 stsp 	const char *obj_tags[] = {
166 ab9a70b2 2017-11-06 stsp 		GOT_OBJ_TAG_COMMIT,
167 ab9a70b2 2017-11-06 stsp 		GOT_OBJ_TAG_TREE,
168 ab9a70b2 2017-11-06 stsp 		GOT_OBJ_TAG_BLOB
169 ab9a70b2 2017-11-06 stsp 	};
170 ab9a70b2 2017-11-06 stsp 	const int obj_types[] = {
171 ab9a70b2 2017-11-06 stsp 		GOT_OBJ_TYPE_COMMIT,
172 ab9a70b2 2017-11-06 stsp 		GOT_OBJ_TYPE_TREE,
173 ab9a70b2 2017-11-06 stsp 		GOT_OBJ_TYPE_BLOB,
174 ab9a70b2 2017-11-06 stsp 	};
175 ab9a70b2 2017-11-06 stsp 	int type = 0;
176 d1cda826 2017-11-06 stsp 	size_t size = 0, hdrlen = 0;
177 ab9a70b2 2017-11-06 stsp 	int i;
178 ab9a70b2 2017-11-06 stsp 	char *p = strchr(buf, '\0');
179 ab9a70b2 2017-11-06 stsp 
180 ab9a70b2 2017-11-06 stsp 	if (p == NULL)
181 ab9a70b2 2017-11-06 stsp 		return got_error(GOT_ERR_BAD_OBJ_HDR);
182 ab9a70b2 2017-11-06 stsp 
183 d1cda826 2017-11-06 stsp 	hdrlen = strlen(buf) + 1 /* '\0' */;
184 d1cda826 2017-11-06 stsp 
185 ab9a70b2 2017-11-06 stsp 	for (i = 0; i < nitems(obj_tags); i++) {
186 ab9a70b2 2017-11-06 stsp 		const char *tag = obj_tags[i];
187 63323519 2017-11-06 stsp 		size_t tlen = strlen(tag);
188 ab9a70b2 2017-11-06 stsp 		const char *errstr;
189 ab9a70b2 2017-11-06 stsp 
190 63323519 2017-11-06 stsp 		if (strncmp(buf, tag, tlen) != 0)
191 ab9a70b2 2017-11-06 stsp 			continue;
192 ab9a70b2 2017-11-06 stsp 
193 ab9a70b2 2017-11-06 stsp 		type = obj_types[i];
194 63323519 2017-11-06 stsp 		if (len <= tlen)
195 ab9a70b2 2017-11-06 stsp 			return got_error(GOT_ERR_BAD_OBJ_HDR);
196 63323519 2017-11-06 stsp 		size = strtonum(buf + tlen, 0, LONG_MAX, &errstr);
197 ab9a70b2 2017-11-06 stsp 		if (errstr != NULL)
198 ab9a70b2 2017-11-06 stsp 			return got_error(GOT_ERR_BAD_OBJ_HDR);
199 ab9a70b2 2017-11-06 stsp 		break;
200 ab9a70b2 2017-11-06 stsp 	}
201 ab9a70b2 2017-11-06 stsp 
202 ab9a70b2 2017-11-06 stsp 	if (type == 0)
203 ab9a70b2 2017-11-06 stsp 		return got_error(GOT_ERR_BAD_OBJ_HDR);
204 ab9a70b2 2017-11-06 stsp 
205 ab9a70b2 2017-11-06 stsp 	*obj = calloc(1, sizeof(**obj));
206 1db76ab5 2018-01-26 mpi 	if (*obj == NULL)
207 1db76ab5 2018-01-26 mpi 		return got_error(GOT_ERR_NO_MEM);
208 ab9a70b2 2017-11-06 stsp 	(*obj)->type = type;
209 d1cda826 2017-11-06 stsp 	(*obj)->hdrlen = hdrlen;
210 ab9a70b2 2017-11-06 stsp 	(*obj)->size = size;
211 ab9a70b2 2017-11-06 stsp 	return NULL;
212 ab9a70b2 2017-11-06 stsp }
213 ab9a70b2 2017-11-06 stsp 
214 ab9a70b2 2017-11-06 stsp static const struct got_error *
215 ab9a70b2 2017-11-06 stsp read_object_header(struct got_object **obj, struct got_repository *repo,
216 a1fd68d8 2018-01-12 stsp     FILE *f)
217 ab9a70b2 2017-11-06 stsp {
218 ab9a70b2 2017-11-06 stsp 	const struct got_error *err;
219 ab9a70b2 2017-11-06 stsp 	struct got_zstream_buf zb;
220 a3e2cbea 2017-12-01 stsp 	char *buf;
221 744d9326 2017-12-01 stsp 	size_t len;
222 a3e2cbea 2017-12-01 stsp 	const size_t zbsize = 64;
223 744d9326 2017-12-01 stsp 	size_t outlen, totlen;
224 ab9a70b2 2017-11-06 stsp 	int i, ret;
225 ab9a70b2 2017-11-06 stsp 
226 744d9326 2017-12-01 stsp 	buf = calloc(zbsize, sizeof(char));
227 a3e2cbea 2017-12-01 stsp 	if (buf == NULL)
228 a3e2cbea 2017-12-01 stsp 		return got_error(GOT_ERR_NO_MEM);
229 a3e2cbea 2017-12-01 stsp 
230 a3e2cbea 2017-12-01 stsp 	err = inflate_init(&zb, zbsize);
231 a1fd68d8 2018-01-12 stsp 	if (err)
232 ab9a70b2 2017-11-06 stsp 		return err;
233 ab9a70b2 2017-11-06 stsp 
234 a3e2cbea 2017-12-01 stsp 	i = 0;
235 744d9326 2017-12-01 stsp 	totlen = 0;
236 a3e2cbea 2017-12-01 stsp 	do {
237 a3e2cbea 2017-12-01 stsp 		err = inflate_read(&zb, f, &outlen);
238 a3e2cbea 2017-12-01 stsp 		if (err)
239 a3e2cbea 2017-12-01 stsp 			goto done;
240 e302c59e 2017-12-01 stsp 		if (strchr(zb.outbuf, '\0') == NULL) {
241 a3e2cbea 2017-12-01 stsp 			buf = recallocarray(buf, 1 + i, 2 + i, zbsize);
242 e302c59e 2017-12-01 stsp 			if (buf == NULL) {
243 e302c59e 2017-12-01 stsp 				err = got_error(GOT_ERR_NO_MEM);
244 e302c59e 2017-12-01 stsp 				goto done;
245 e302c59e 2017-12-01 stsp 			}
246 e302c59e 2017-12-01 stsp 		}
247 c56976de 2017-12-01 stsp 		memcpy(buf + totlen, zb.outbuf, outlen);
248 744d9326 2017-12-01 stsp 		totlen += outlen;
249 a3e2cbea 2017-12-01 stsp 		i++;
250 a3e2cbea 2017-12-01 stsp 	} while (strchr(zb.outbuf, '\0') == NULL);
251 ab9a70b2 2017-11-06 stsp 
252 744d9326 2017-12-01 stsp 	err = parse_object_header(obj, buf, totlen);
253 ab9a70b2 2017-11-06 stsp done:
254 ab9a70b2 2017-11-06 stsp 	inflate_end(&zb);
255 ab9a70b2 2017-11-06 stsp 	return err;
256 ab9a70b2 2017-11-06 stsp }
257 ab9a70b2 2017-11-06 stsp 
258 d1cda826 2017-11-06 stsp static const struct got_error *
259 4558fcd4 2018-01-14 stsp object_path(char **path, struct got_object_id *id, struct got_repository *repo)
260 ab9a70b2 2017-11-06 stsp {
261 ab9a70b2 2017-11-06 stsp 	const struct got_error *err = NULL;
262 ab9a70b2 2017-11-06 stsp 	char hex[SHA1_DIGEST_STRING_LENGTH];
263 d1cda826 2017-11-06 stsp 	char *path_objects = got_repo_get_path_objects(repo);
264 ab9a70b2 2017-11-06 stsp 
265 ab9a70b2 2017-11-06 stsp 	if (path_objects == NULL)
266 ab9a70b2 2017-11-06 stsp 		return got_error(GOT_ERR_NO_MEM);
267 ab9a70b2 2017-11-06 stsp 
268 ab9a70b2 2017-11-06 stsp 	got_object_id_str(id, hex, sizeof(hex));
269 ab9a70b2 2017-11-06 stsp 
270 d1cda826 2017-11-06 stsp 	if (asprintf(path, "%s/%.2x/%s", path_objects,
271 d1cda826 2017-11-06 stsp 	    id->sha1[0], hex + 2) == -1)
272 ab9a70b2 2017-11-06 stsp 		err = got_error(GOT_ERR_NO_MEM);
273 ab9a70b2 2017-11-06 stsp 
274 d1cda826 2017-11-06 stsp 	free(path_objects);
275 d1cda826 2017-11-06 stsp 	return err;
276 d1cda826 2017-11-06 stsp }
277 d1cda826 2017-11-06 stsp 
278 4ee4114f 2018-01-23 stsp static const struct got_error *
279 4ee4114f 2018-01-23 stsp fopen_object(FILE **f, struct got_object *obj, struct got_repository *repo)
280 d1cda826 2017-11-06 stsp {
281 d1cda826 2017-11-06 stsp 	const struct got_error *err = NULL;
282 a1fd68d8 2018-01-12 stsp 	char *path;
283 d1cda826 2017-11-06 stsp 
284 3ee5fc21 2018-01-17 stsp 	if (obj->flags & GOT_OBJ_FLAG_PACKED)
285 3ee5fc21 2018-01-17 stsp 		return got_packfile_extract_object(f, obj, repo);
286 6c00b545 2018-01-17 stsp 
287 6c00b545 2018-01-17 stsp 	err = object_path(&path, &obj->id, repo);
288 d1cda826 2017-11-06 stsp 	if (err)
289 d1cda826 2017-11-06 stsp 		return err;
290 4558fcd4 2018-01-14 stsp 	*f = fopen(path, "rb");
291 4558fcd4 2018-01-14 stsp 	if (*f == NULL) {
292 6c00b545 2018-01-17 stsp 		err = got_error_from_errno();
293 6c00b545 2018-01-17 stsp 		goto done;
294 a1fd68d8 2018-01-12 stsp 	}
295 4558fcd4 2018-01-14 stsp done:
296 4558fcd4 2018-01-14 stsp 	free(path);
297 4558fcd4 2018-01-14 stsp 	return err;
298 4558fcd4 2018-01-14 stsp }
299 a1fd68d8 2018-01-12 stsp 
300 4558fcd4 2018-01-14 stsp const struct got_error *
301 4558fcd4 2018-01-14 stsp got_object_open(struct got_object **obj, struct got_repository *repo,
302 4558fcd4 2018-01-14 stsp     struct got_object_id *id)
303 4558fcd4 2018-01-14 stsp {
304 6c00b545 2018-01-17 stsp 	const struct got_error *err = NULL;
305 6c00b545 2018-01-17 stsp 	char *path;
306 4558fcd4 2018-01-14 stsp 	FILE *f;
307 4558fcd4 2018-01-14 stsp 
308 6c00b545 2018-01-17 stsp 	err = object_path(&path, id, repo);
309 4558fcd4 2018-01-14 stsp 	if (err)
310 4558fcd4 2018-01-14 stsp 		return err;
311 4558fcd4 2018-01-14 stsp 
312 6c00b545 2018-01-17 stsp 	f = fopen(path, "rb");
313 6c00b545 2018-01-17 stsp 	if (f == NULL) {
314 6c00b545 2018-01-17 stsp 		if (errno != ENOENT) {
315 6c00b545 2018-01-17 stsp 			err = got_error_from_errno();
316 6c00b545 2018-01-17 stsp 			goto done;
317 6c00b545 2018-01-17 stsp 		}
318 6c00b545 2018-01-17 stsp 		err = got_packfile_open_object(obj, id, repo);
319 6c00b545 2018-01-17 stsp 		if (err)
320 6c00b545 2018-01-17 stsp 			goto done;
321 6c00b545 2018-01-17 stsp 		if (*obj == NULL)
322 6c00b545 2018-01-17 stsp 			err = got_error(GOT_ERR_NO_OBJ);
323 6c00b545 2018-01-17 stsp 	} else {
324 6c00b545 2018-01-17 stsp 		err = read_object_header(obj, repo, f);
325 6c00b545 2018-01-17 stsp 		if (err)
326 6c00b545 2018-01-17 stsp 			goto done;
327 ab9a70b2 2017-11-06 stsp 		memcpy((*obj)->id.sha1, id->sha1, SHA1_DIGEST_LENGTH);
328 6c00b545 2018-01-17 stsp 	}
329 6c00b545 2018-01-17 stsp done:
330 6c00b545 2018-01-17 stsp 	free(path);
331 6c00b545 2018-01-17 stsp 	if (err && f)
332 a1fd68d8 2018-01-12 stsp 		fclose(f);
333 ab9a70b2 2017-11-06 stsp 	return err;
334 6c00b545 2018-01-17 stsp 
335 ab9a70b2 2017-11-06 stsp }
336 ab9a70b2 2017-11-06 stsp 
337 ab9a70b2 2017-11-06 stsp void
338 ab9a70b2 2017-11-06 stsp got_object_close(struct got_object *obj)
339 ab9a70b2 2017-11-06 stsp {
340 96f5e8b3 2018-01-23 stsp 	if (obj->flags & GOT_OBJ_FLAG_DELTIFIED) {
341 c3703302 2018-01-23 stsp 		struct got_delta *delta;
342 96f5e8b3 2018-01-23 stsp 		while (!SIMPLEQ_EMPTY(&obj->deltas.entries)) {
343 c3703302 2018-01-23 stsp 			delta = SIMPLEQ_FIRST(&obj->deltas.entries);
344 96f5e8b3 2018-01-23 stsp 			SIMPLEQ_REMOVE_HEAD(&obj->deltas.entries, entry);
345 c3703302 2018-01-23 stsp 			got_delta_close(delta);
346 96f5e8b3 2018-01-23 stsp 		}
347 96f5e8b3 2018-01-23 stsp 	}
348 96f5e8b3 2018-01-23 stsp 	if (obj->flags & GOT_OBJ_FLAG_PACKED)
349 96f5e8b3 2018-01-23 stsp 		free(obj->path_packfile);
350 ab9a70b2 2017-11-06 stsp 	free(obj);
351 d1cda826 2017-11-06 stsp }
352 d1cda826 2017-11-06 stsp 
353 d1cda826 2017-11-06 stsp static int
354 d1cda826 2017-11-06 stsp commit_object_valid(struct got_commit_object *commit)
355 d1cda826 2017-11-06 stsp {
356 d1cda826 2017-11-06 stsp 	int i;
357 d1cda826 2017-11-06 stsp 	int n;
358 d1cda826 2017-11-06 stsp 
359 d1cda826 2017-11-06 stsp 	if (commit == NULL)
360 d1cda826 2017-11-06 stsp 		return 0;
361 d1cda826 2017-11-06 stsp 
362 d1cda826 2017-11-06 stsp 	n = 0;
363 d1cda826 2017-11-06 stsp 	for (i = 0; i < SHA1_DIGEST_LENGTH; i++) {
364 d1cda826 2017-11-06 stsp 		if (commit->tree_id.sha1[i] == 0)
365 d1cda826 2017-11-06 stsp 			n++;
366 d1cda826 2017-11-06 stsp 	}
367 d1cda826 2017-11-06 stsp 	if (n == SHA1_DIGEST_LENGTH)
368 d1cda826 2017-11-06 stsp 		return 0;
369 d1cda826 2017-11-06 stsp 
370 d1cda826 2017-11-06 stsp 	return 1;
371 ab9a70b2 2017-11-06 stsp }
372 d1cda826 2017-11-06 stsp 
373 d1cda826 2017-11-06 stsp static const struct got_error *
374 d1cda826 2017-11-06 stsp parse_commit_object(struct got_commit_object **commit, char *buf, size_t len)
375 d1cda826 2017-11-06 stsp {
376 d1cda826 2017-11-06 stsp 	const struct got_error *err = NULL;
377 d1cda826 2017-11-06 stsp 	char *s = buf;
378 d1cda826 2017-11-06 stsp 	size_t tlen;
379 d1cda826 2017-11-06 stsp 	ssize_t remain = (ssize_t)len;
380 d1cda826 2017-11-06 stsp  
381 d1cda826 2017-11-06 stsp 	*commit = calloc(1, sizeof(**commit));
382 d1cda826 2017-11-06 stsp 	if (*commit == NULL)
383 d1cda826 2017-11-06 stsp 		return got_error(GOT_ERR_NO_MEM);
384 d1cda826 2017-11-06 stsp 
385 d1cda826 2017-11-06 stsp 	SIMPLEQ_INIT(&(*commit)->parent_ids);
386 d1cda826 2017-11-06 stsp 
387 d1cda826 2017-11-06 stsp 	tlen = strlen(GOT_COMMIT_TAG_TREE);
388 d1cda826 2017-11-06 stsp 	if (strncmp(s, GOT_COMMIT_TAG_TREE, tlen) == 0) {
389 d1cda826 2017-11-06 stsp 		remain -= tlen;
390 d1cda826 2017-11-06 stsp 		if (remain < SHA1_DIGEST_STRING_LENGTH) {
391 d1cda826 2017-11-06 stsp 			err = got_error(GOT_ERR_BAD_OBJ_DATA);
392 d1cda826 2017-11-06 stsp 			goto done;
393 d1cda826 2017-11-06 stsp 		}
394 d1cda826 2017-11-06 stsp 		s += tlen;
395 d1cda826 2017-11-06 stsp 		if (!got_parse_sha1_digest((*commit)->tree_id.sha1, s)) {
396 d1cda826 2017-11-06 stsp 			err = got_error(GOT_ERR_BAD_OBJ_DATA);
397 d1cda826 2017-11-06 stsp 			goto done;
398 d1cda826 2017-11-06 stsp 		}
399 d1cda826 2017-11-06 stsp 		remain -= SHA1_DIGEST_STRING_LENGTH;
400 d1cda826 2017-11-06 stsp 		s += SHA1_DIGEST_STRING_LENGTH;
401 d1cda826 2017-11-06 stsp 	} else {
402 d1cda826 2017-11-06 stsp 		err = got_error(GOT_ERR_BAD_OBJ_DATA);
403 d1cda826 2017-11-06 stsp 		goto done;
404 d1cda826 2017-11-06 stsp 	}
405 d1cda826 2017-11-06 stsp 
406 d1cda826 2017-11-06 stsp 	tlen = strlen(GOT_COMMIT_TAG_PARENT);
407 d1cda826 2017-11-06 stsp 	while (strncmp(s, GOT_COMMIT_TAG_PARENT, tlen) == 0) {
408 d1cda826 2017-11-06 stsp 		struct got_parent_id *pid;
409 d1cda826 2017-11-06 stsp 
410 d1cda826 2017-11-06 stsp 		remain -= tlen;
411 d1cda826 2017-11-06 stsp 		if (remain < SHA1_DIGEST_STRING_LENGTH) {
412 d1cda826 2017-11-06 stsp 			err = got_error(GOT_ERR_BAD_OBJ_DATA);
413 d1cda826 2017-11-06 stsp 			goto done;
414 d1cda826 2017-11-06 stsp 		}	
415 d1cda826 2017-11-06 stsp 
416 d1cda826 2017-11-06 stsp 		pid = calloc(1, sizeof(*pid));
417 d1cda826 2017-11-06 stsp 		if (pid == NULL) {
418 d1cda826 2017-11-06 stsp 			err = got_error(GOT_ERR_NO_MEM);
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 		if (!got_parse_sha1_digest(pid->id.sha1, s)) {
423 d1cda826 2017-11-06 stsp 			err = got_error(GOT_ERR_BAD_OBJ_DATA);
424 d1cda826 2017-11-06 stsp 			goto done;
425 d1cda826 2017-11-06 stsp 		}
426 d1cda826 2017-11-06 stsp 		SIMPLEQ_INSERT_TAIL(&(*commit)->parent_ids, pid, entry);
427 d1cda826 2017-11-06 stsp 		(*commit)->nparents++;
428 d1cda826 2017-11-06 stsp 
429 d1cda826 2017-11-06 stsp 		s += SHA1_DIGEST_STRING_LENGTH;
430 d1cda826 2017-11-06 stsp 	}
431 d1cda826 2017-11-06 stsp 
432 d1cda826 2017-11-06 stsp 	tlen = strlen(GOT_COMMIT_TAG_AUTHOR);
433 d1cda826 2017-11-06 stsp 	if (strncmp(s, GOT_COMMIT_TAG_AUTHOR, tlen) == 0) {
434 d1cda826 2017-11-06 stsp 		char *p;
435 d1cda826 2017-11-06 stsp 
436 d1cda826 2017-11-06 stsp 		remain -= tlen;
437 d1cda826 2017-11-06 stsp 		if (remain <= 0) {
438 d1cda826 2017-11-06 stsp 			err = got_error(GOT_ERR_BAD_OBJ_DATA);
439 d1cda826 2017-11-06 stsp 			goto done;
440 d1cda826 2017-11-06 stsp 		}
441 d1cda826 2017-11-06 stsp 		s += tlen;
442 d1cda826 2017-11-06 stsp 		p = strchr(s, '\n');
443 d1cda826 2017-11-06 stsp 		if (p == NULL) {
444 d1cda826 2017-11-06 stsp 			err = got_error(GOT_ERR_BAD_OBJ_DATA);
445 d1cda826 2017-11-06 stsp 			goto done;
446 d1cda826 2017-11-06 stsp 		}
447 d1cda826 2017-11-06 stsp 		*p = '\0';
448 d1cda826 2017-11-06 stsp 		(*commit)->author = strdup(s);
449 d1cda826 2017-11-06 stsp 		if ((*commit)->author == NULL) {
450 d1cda826 2017-11-06 stsp 			err = got_error(GOT_ERR_NO_MEM);
451 d1cda826 2017-11-06 stsp 			goto done;
452 d1cda826 2017-11-06 stsp 		}
453 d1cda826 2017-11-06 stsp 		s += strlen((*commit)->author) + 1;
454 d1cda826 2017-11-06 stsp 	}
455 d1cda826 2017-11-06 stsp 
456 d1cda826 2017-11-06 stsp 	tlen = strlen(GOT_COMMIT_TAG_COMMITTER);
457 d1cda826 2017-11-06 stsp 	if (strncmp(s, GOT_COMMIT_TAG_COMMITTER, tlen) == 0) {
458 d1cda826 2017-11-06 stsp 		char *p;
459 d1cda826 2017-11-06 stsp 
460 d1cda826 2017-11-06 stsp 		remain -= tlen;
461 d1cda826 2017-11-06 stsp 		if (remain <= 0) {
462 d1cda826 2017-11-06 stsp 			err = got_error(GOT_ERR_BAD_OBJ_DATA);
463 d1cda826 2017-11-06 stsp 			goto done;
464 d1cda826 2017-11-06 stsp 		}
465 d1cda826 2017-11-06 stsp 		s += tlen;
466 d1cda826 2017-11-06 stsp 		p = strchr(s, '\n');
467 d1cda826 2017-11-06 stsp 		if (p == NULL) {
468 d1cda826 2017-11-06 stsp 			err = got_error(GOT_ERR_BAD_OBJ_DATA);
469 d1cda826 2017-11-06 stsp 			goto done;
470 d1cda826 2017-11-06 stsp 		}
471 d1cda826 2017-11-06 stsp 		*p = '\0';
472 d1cda826 2017-11-06 stsp 		(*commit)->committer = strdup(s);
473 d1cda826 2017-11-06 stsp 		if ((*commit)->committer == NULL) {
474 d1cda826 2017-11-06 stsp 			err = got_error(GOT_ERR_NO_MEM);
475 d1cda826 2017-11-06 stsp 			goto done;
476 d1cda826 2017-11-06 stsp 		}
477 d1cda826 2017-11-06 stsp 		s += strlen((*commit)->committer) + 1;
478 d1cda826 2017-11-06 stsp 	}
479 d1cda826 2017-11-06 stsp 
480 d1cda826 2017-11-06 stsp 	(*commit)->logmsg = strdup(s);
481 d1cda826 2017-11-06 stsp done:
482 d1cda826 2017-11-06 stsp 	if (err)
483 d1cda826 2017-11-06 stsp 		got_object_commit_close(*commit);
484 0ffeb3c2 2017-11-26 stsp 	return err;
485 0ffeb3c2 2017-11-26 stsp }
486 0ffeb3c2 2017-11-26 stsp 
487 0ffeb3c2 2017-11-26 stsp static void
488 0ffeb3c2 2017-11-26 stsp tree_entry_close(struct got_tree_entry *te)
489 0ffeb3c2 2017-11-26 stsp {
490 0ffeb3c2 2017-11-26 stsp 	free(te->name);
491 0ffeb3c2 2017-11-26 stsp 	free(te);
492 0ffeb3c2 2017-11-26 stsp }
493 0ffeb3c2 2017-11-26 stsp 
494 0ffeb3c2 2017-11-26 stsp static const struct got_error *
495 0ffeb3c2 2017-11-26 stsp parse_tree_entry(struct got_tree_entry **te, size_t *elen, char *buf,
496 0ffeb3c2 2017-11-26 stsp     size_t maxlen)
497 0ffeb3c2 2017-11-26 stsp {
498 0ffeb3c2 2017-11-26 stsp 	char *p = buf, *space;
499 0ffeb3c2 2017-11-26 stsp 	const struct got_error *err = NULL;
500 0ffeb3c2 2017-11-26 stsp 	char hex[SHA1_DIGEST_STRING_LENGTH];
501 0ffeb3c2 2017-11-26 stsp 
502 0ffeb3c2 2017-11-26 stsp 	*te = calloc(1, sizeof(**te));
503 0ffeb3c2 2017-11-26 stsp 	if (*te == NULL)
504 0ffeb3c2 2017-11-26 stsp 		return got_error(GOT_ERR_NO_MEM);
505 0ffeb3c2 2017-11-26 stsp 
506 0ffeb3c2 2017-11-26 stsp 	*elen = strlen(buf) + 1;
507 0ffeb3c2 2017-11-26 stsp 	if (*elen > maxlen) {
508 0ffeb3c2 2017-11-26 stsp 		free(*te);
509 0ffeb3c2 2017-11-26 stsp 		return got_error(GOT_ERR_BAD_OBJ_DATA);
510 0ffeb3c2 2017-11-26 stsp 	}
511 0ffeb3c2 2017-11-26 stsp 
512 0ffeb3c2 2017-11-26 stsp 	space = strchr(buf, ' ');
513 0ffeb3c2 2017-11-26 stsp 	if (space == NULL) {
514 0ffeb3c2 2017-11-26 stsp 		free(*te);
515 0ffeb3c2 2017-11-26 stsp 		return got_error(GOT_ERR_BAD_OBJ_DATA);
516 0ffeb3c2 2017-11-26 stsp 	}
517 0ffeb3c2 2017-11-26 stsp 	while (*p != ' ') {
518 0ffeb3c2 2017-11-26 stsp 		if (*p < '0' && *p > '7') {
519 0ffeb3c2 2017-11-26 stsp 			err = got_error(GOT_ERR_BAD_OBJ_DATA);
520 0ffeb3c2 2017-11-26 stsp 			goto done;
521 0ffeb3c2 2017-11-26 stsp 		}
522 0ffeb3c2 2017-11-26 stsp 		(*te)->mode <<= 3;
523 0ffeb3c2 2017-11-26 stsp 		(*te)->mode |= *p - '0';
524 0ffeb3c2 2017-11-26 stsp 		p++;
525 0ffeb3c2 2017-11-26 stsp 	}
526 0ffeb3c2 2017-11-26 stsp 
527 0ffeb3c2 2017-11-26 stsp 	(*te)->name = strdup(space + 1);
528 0ffeb3c2 2017-11-26 stsp 	if (*elen > maxlen || maxlen - *elen < SHA1_DIGEST_LENGTH) {
529 0ffeb3c2 2017-11-26 stsp 		err = got_error(GOT_ERR_BAD_OBJ_DATA);
530 0ffeb3c2 2017-11-26 stsp 		goto done;
531 0ffeb3c2 2017-11-26 stsp 	}
532 0ffeb3c2 2017-11-26 stsp 	buf += strlen(buf) + 1;
533 0ffeb3c2 2017-11-26 stsp 	memcpy((*te)->id.sha1, buf, SHA1_DIGEST_LENGTH);
534 0ffeb3c2 2017-11-26 stsp 	*elen += SHA1_DIGEST_LENGTH;
535 0ffeb3c2 2017-11-26 stsp done:
536 0ffeb3c2 2017-11-26 stsp 	if (err)
537 0ffeb3c2 2017-11-26 stsp 		tree_entry_close(*te);
538 d1cda826 2017-11-06 stsp 	return err;
539 d1cda826 2017-11-06 stsp }
540 d1cda826 2017-11-06 stsp 
541 d1cda826 2017-11-06 stsp static const struct got_error *
542 0ffeb3c2 2017-11-26 stsp parse_tree_object(struct got_tree_object **tree, struct got_repository *repo,
543 0ffeb3c2 2017-11-26 stsp     char *buf, size_t len)
544 0ffeb3c2 2017-11-26 stsp {
545 0ffeb3c2 2017-11-26 stsp 	size_t remain = len;
546 0ffeb3c2 2017-11-26 stsp 	int nentries;
547 0ffeb3c2 2017-11-26 stsp 
548 0ffeb3c2 2017-11-26 stsp 	*tree = calloc(1, sizeof(**tree));
549 0ffeb3c2 2017-11-26 stsp 	if (*tree == NULL)
550 0ffeb3c2 2017-11-26 stsp 		return got_error(GOT_ERR_NO_MEM);
551 0ffeb3c2 2017-11-26 stsp 
552 0ffeb3c2 2017-11-26 stsp 	SIMPLEQ_INIT(&(*tree)->entries);
553 0ffeb3c2 2017-11-26 stsp 
554 0ffeb3c2 2017-11-26 stsp 	while (remain > 0) {
555 0ffeb3c2 2017-11-26 stsp 		struct got_tree_entry *te;
556 0ffeb3c2 2017-11-26 stsp 		size_t elen;
557 0ffeb3c2 2017-11-26 stsp 
558 0ffeb3c2 2017-11-26 stsp 		parse_tree_entry(&te, &elen, buf, remain);
559 0ffeb3c2 2017-11-26 stsp 		(*tree)->nentries++;
560 0ffeb3c2 2017-11-26 stsp 		SIMPLEQ_INSERT_TAIL(&(*tree)->entries, te, entry);
561 0ffeb3c2 2017-11-26 stsp 		buf += elen;
562 0ffeb3c2 2017-11-26 stsp 		remain -= elen;
563 0ffeb3c2 2017-11-26 stsp 	}
564 0ffeb3c2 2017-11-26 stsp 
565 0ffeb3c2 2017-11-26 stsp 	if (remain != 0) {
566 0ffeb3c2 2017-11-26 stsp 		got_object_tree_close(*tree);
567 0ffeb3c2 2017-11-26 stsp 		return got_error(GOT_ERR_BAD_OBJ_DATA);
568 0ffeb3c2 2017-11-26 stsp 	}
569 0ffeb3c2 2017-11-26 stsp 
570 0ffeb3c2 2017-11-26 stsp 	return NULL;
571 0ffeb3c2 2017-11-26 stsp }
572 0ffeb3c2 2017-11-26 stsp 
573 0ffeb3c2 2017-11-26 stsp static const struct got_error *
574 d1cda826 2017-11-06 stsp read_commit_object(struct got_commit_object **commit,
575 4558fcd4 2018-01-14 stsp     struct got_repository *repo, struct got_object *obj, FILE *f)
576 d1cda826 2017-11-06 stsp {
577 d1cda826 2017-11-06 stsp 	const struct got_error *err = NULL;
578 d1cda826 2017-11-06 stsp 	struct got_zstream_buf zb;
579 d1cda826 2017-11-06 stsp 	size_t len;
580 d1cda826 2017-11-06 stsp 	char *p;
581 d1cda826 2017-11-06 stsp 	int i, ret;
582 d1cda826 2017-11-06 stsp 
583 d1cda826 2017-11-06 stsp 	err = inflate_init(&zb, 8192);
584 4558fcd4 2018-01-14 stsp 	if (err)
585 d1cda826 2017-11-06 stsp 		return err;
586 d1cda826 2017-11-06 stsp 
587 d1cda826 2017-11-06 stsp 	do {
588 d1cda826 2017-11-06 stsp 		err = inflate_read(&zb, f, &len);
589 d1cda826 2017-11-06 stsp 		if (err || len == 0)
590 d1cda826 2017-11-06 stsp 			break;
591 d1cda826 2017-11-06 stsp 	} while (len < obj->hdrlen + obj->size);
592 d1cda826 2017-11-06 stsp 
593 d1cda826 2017-11-06 stsp 	if (len < obj->hdrlen + obj->size) {
594 d1cda826 2017-11-06 stsp 		err = got_error(GOT_ERR_BAD_OBJ_DATA);
595 d1cda826 2017-11-06 stsp 		goto done;
596 d1cda826 2017-11-06 stsp 	}
597 d1cda826 2017-11-06 stsp 
598 d1cda826 2017-11-06 stsp 	/* Skip object header. */
599 d1cda826 2017-11-06 stsp 	len -= obj->hdrlen;
600 d1cda826 2017-11-06 stsp 	err = parse_commit_object(commit, zb.outbuf + obj->hdrlen, len);
601 d1cda826 2017-11-06 stsp done:
602 d1cda826 2017-11-06 stsp 	inflate_end(&zb);
603 d1cda826 2017-11-06 stsp 	return err;
604 d1cda826 2017-11-06 stsp }
605 d1cda826 2017-11-06 stsp 
606 d1cda826 2017-11-06 stsp const struct got_error *
607 d1cda826 2017-11-06 stsp got_object_commit_open(struct got_commit_object **commit,
608 d1cda826 2017-11-06 stsp     struct got_repository *repo, struct got_object *obj)
609 d1cda826 2017-11-06 stsp {
610 d1cda826 2017-11-06 stsp 	const struct got_error *err = NULL;
611 4558fcd4 2018-01-14 stsp 	FILE *f;
612 d1cda826 2017-11-06 stsp 
613 d1cda826 2017-11-06 stsp 	if (obj->type != GOT_OBJ_TYPE_COMMIT)
614 d1cda826 2017-11-06 stsp 		return got_error(GOT_ERR_OBJ_TYPE);
615 d1cda826 2017-11-06 stsp 
616 4ee4114f 2018-01-23 stsp 	err = fopen_object(&f, obj, repo);
617 d1cda826 2017-11-06 stsp 	if (err)
618 d1cda826 2017-11-06 stsp 		return err;
619 d1cda826 2017-11-06 stsp 
620 4558fcd4 2018-01-14 stsp 	err = read_commit_object(commit, repo, obj, f);
621 4558fcd4 2018-01-14 stsp 	fclose(f);
622 d1cda826 2017-11-06 stsp 	return err;
623 d1cda826 2017-11-06 stsp }
624 d1cda826 2017-11-06 stsp 
625 d1cda826 2017-11-06 stsp void
626 d1cda826 2017-11-06 stsp got_object_commit_close(struct got_commit_object *commit)
627 d1cda826 2017-11-06 stsp {
628 d1cda826 2017-11-06 stsp 	struct got_parent_id *pid;
629 d1cda826 2017-11-06 stsp 
630 d1cda826 2017-11-06 stsp 	while (!SIMPLEQ_EMPTY(&commit->parent_ids)) {
631 d1cda826 2017-11-06 stsp 		pid = SIMPLEQ_FIRST(&commit->parent_ids);
632 d1cda826 2017-11-06 stsp 		SIMPLEQ_REMOVE_HEAD(&commit->parent_ids, entry);
633 d1cda826 2017-11-06 stsp 		free(pid);
634 d1cda826 2017-11-06 stsp 	}
635 d1cda826 2017-11-06 stsp 
636 d1cda826 2017-11-06 stsp 	free(commit->author);
637 d1cda826 2017-11-06 stsp 	free(commit->committer);
638 d1cda826 2017-11-06 stsp 	free(commit->logmsg);
639 d1cda826 2017-11-06 stsp 	free(commit);
640 d1cda826 2017-11-06 stsp }
641 0ffeb3c2 2017-11-26 stsp 
642 0ffeb3c2 2017-11-26 stsp static const struct got_error *
643 0ffeb3c2 2017-11-26 stsp read_tree_object(struct got_tree_object **tree,
644 4558fcd4 2018-01-14 stsp     struct got_repository *repo, struct got_object *obj, FILE *f)
645 0ffeb3c2 2017-11-26 stsp {
646 0ffeb3c2 2017-11-26 stsp 	const struct got_error *err = NULL;
647 0ffeb3c2 2017-11-26 stsp 	struct got_zstream_buf zb;
648 0ffeb3c2 2017-11-26 stsp 	size_t len;
649 0ffeb3c2 2017-11-26 stsp 	char *p;
650 0ffeb3c2 2017-11-26 stsp 	int i, ret;
651 0ffeb3c2 2017-11-26 stsp 
652 0ffeb3c2 2017-11-26 stsp 	err = inflate_init(&zb, 8192);
653 4558fcd4 2018-01-14 stsp 	if (err)
654 0ffeb3c2 2017-11-26 stsp 		return err;
655 0ffeb3c2 2017-11-26 stsp 
656 0ffeb3c2 2017-11-26 stsp 	do {
657 0ffeb3c2 2017-11-26 stsp 		err = inflate_read(&zb, f, &len);
658 0ffeb3c2 2017-11-26 stsp 		if (err || len == 0)
659 0ffeb3c2 2017-11-26 stsp 			break;
660 0ffeb3c2 2017-11-26 stsp 	} while (len < obj->hdrlen + obj->size);
661 0ffeb3c2 2017-11-26 stsp 
662 0ffeb3c2 2017-11-26 stsp 	if (len < obj->hdrlen + obj->size) {
663 0ffeb3c2 2017-11-26 stsp 		err = got_error(GOT_ERR_BAD_OBJ_DATA);
664 0ffeb3c2 2017-11-26 stsp 		goto done;
665 0ffeb3c2 2017-11-26 stsp 	}
666 0ffeb3c2 2017-11-26 stsp 
667 0ffeb3c2 2017-11-26 stsp 	/* Skip object header. */
668 0ffeb3c2 2017-11-26 stsp 	len -= obj->hdrlen;
669 0ffeb3c2 2017-11-26 stsp 	err = parse_tree_object(tree, repo, zb.outbuf + obj->hdrlen, len);
670 0ffeb3c2 2017-11-26 stsp done:
671 0ffeb3c2 2017-11-26 stsp 	inflate_end(&zb);
672 0ffeb3c2 2017-11-26 stsp 	return err;
673 0ffeb3c2 2017-11-26 stsp }
674 0ffeb3c2 2017-11-26 stsp 
675 0ffeb3c2 2017-11-26 stsp const struct got_error *
676 0ffeb3c2 2017-11-26 stsp got_object_tree_open(struct got_tree_object **tree,
677 0ffeb3c2 2017-11-26 stsp     struct got_repository *repo, struct got_object *obj)
678 0ffeb3c2 2017-11-26 stsp {
679 0ffeb3c2 2017-11-26 stsp 	const struct got_error *err = NULL;
680 4558fcd4 2018-01-14 stsp 	FILE *f;
681 0ffeb3c2 2017-11-26 stsp 
682 0ffeb3c2 2017-11-26 stsp 	if (obj->type != GOT_OBJ_TYPE_TREE)
683 0ffeb3c2 2017-11-26 stsp 		return got_error(GOT_ERR_OBJ_TYPE);
684 0ffeb3c2 2017-11-26 stsp 
685 4ee4114f 2018-01-23 stsp 	err = fopen_object(&f, obj, repo);
686 0ffeb3c2 2017-11-26 stsp 	if (err)
687 0ffeb3c2 2017-11-26 stsp 		return err;
688 0ffeb3c2 2017-11-26 stsp 
689 4558fcd4 2018-01-14 stsp 	err = read_tree_object(tree, repo, obj, f);
690 4558fcd4 2018-01-14 stsp 	fclose(f);
691 0ffeb3c2 2017-11-26 stsp 	return err;
692 0ffeb3c2 2017-11-26 stsp }
693 0ffeb3c2 2017-11-26 stsp 
694 0ffeb3c2 2017-11-26 stsp void
695 0ffeb3c2 2017-11-26 stsp got_object_tree_close(struct got_tree_object *tree)
696 0ffeb3c2 2017-11-26 stsp {
697 f715ca7f 2017-11-27 stsp 	struct got_tree_entry *te;
698 f715ca7f 2017-11-27 stsp 
699 f715ca7f 2017-11-27 stsp 	while (!SIMPLEQ_EMPTY(&tree->entries)) {
700 f715ca7f 2017-11-27 stsp 		te = SIMPLEQ_FIRST(&tree->entries);
701 f715ca7f 2017-11-27 stsp 		SIMPLEQ_REMOVE_HEAD(&tree->entries, entry);
702 f715ca7f 2017-11-27 stsp 		tree_entry_close(te);
703 f715ca7f 2017-11-27 stsp 	}
704 f715ca7f 2017-11-27 stsp 
705 f715ca7f 2017-11-27 stsp 	free(tree);
706 68482ea3 2017-11-27 stsp }
707 68482ea3 2017-11-27 stsp 
708 68482ea3 2017-11-27 stsp const struct got_error *
709 68482ea3 2017-11-27 stsp got_object_blob_open(struct got_blob_object **blob,
710 68482ea3 2017-11-27 stsp     struct got_repository *repo, struct got_object *obj, size_t blocksize)
711 68482ea3 2017-11-27 stsp {
712 68482ea3 2017-11-27 stsp 	const struct got_error *err = NULL;
713 68482ea3 2017-11-27 stsp 
714 68482ea3 2017-11-27 stsp 	if (obj->type != GOT_OBJ_TYPE_BLOB)
715 68482ea3 2017-11-27 stsp 		return got_error(GOT_ERR_OBJ_TYPE);
716 68482ea3 2017-11-27 stsp 
717 7d283eee 2017-11-29 stsp 	if (blocksize < obj->hdrlen)
718 7d283eee 2017-11-29 stsp 		return got_error(GOT_ERR_NO_SPACE);
719 7d283eee 2017-11-29 stsp 
720 68482ea3 2017-11-27 stsp 	*blob = calloc(1, sizeof(**blob));
721 4558fcd4 2018-01-14 stsp 	if (*blob == NULL)
722 68482ea3 2017-11-27 stsp 		return got_error(GOT_ERR_NO_MEM);
723 68482ea3 2017-11-27 stsp 
724 4ee4114f 2018-01-23 stsp 	err = fopen_object(&((*blob)->f), obj, repo);
725 4558fcd4 2018-01-14 stsp 	if (err) {
726 68482ea3 2017-11-27 stsp 		free(*blob);
727 4558fcd4 2018-01-14 stsp 		return err;
728 68482ea3 2017-11-27 stsp 	}
729 68482ea3 2017-11-27 stsp 
730 68482ea3 2017-11-27 stsp 	err = inflate_init(&(*blob)->zb, blocksize);
731 68482ea3 2017-11-27 stsp 	if (err != NULL) {
732 68482ea3 2017-11-27 stsp 		fclose((*blob)->f);
733 68482ea3 2017-11-27 stsp 		free(*blob);
734 68482ea3 2017-11-27 stsp 		return err;
735 68482ea3 2017-11-27 stsp 	}
736 68482ea3 2017-11-27 stsp 
737 7d283eee 2017-11-29 stsp 	(*blob)->hdrlen = obj->hdrlen;
738 f78b0693 2017-11-29 stsp 	memcpy(&(*blob)->id.sha1, obj->id.sha1, SHA1_DIGEST_LENGTH);
739 7d283eee 2017-11-29 stsp 
740 68482ea3 2017-11-27 stsp 	return err;
741 0ffeb3c2 2017-11-26 stsp }
742 68482ea3 2017-11-27 stsp 
743 68482ea3 2017-11-27 stsp void
744 68482ea3 2017-11-27 stsp got_object_blob_close(struct got_blob_object *blob)
745 68482ea3 2017-11-27 stsp {
746 68482ea3 2017-11-27 stsp 	inflate_end(&blob->zb);
747 68482ea3 2017-11-27 stsp 	fclose(blob->f);
748 68482ea3 2017-11-27 stsp 	free(blob);
749 68482ea3 2017-11-27 stsp }
750 68482ea3 2017-11-27 stsp 
751 68482ea3 2017-11-27 stsp const struct got_error *
752 68482ea3 2017-11-27 stsp got_object_blob_read_block(struct got_blob_object *blob, size_t *outlenp)
753 68482ea3 2017-11-27 stsp {
754 68482ea3 2017-11-27 stsp 	return inflate_read(&blob->zb, blob->f, outlenp);
755 68482ea3 2017-11-27 stsp }