1 13b2bc37 2022-10-23 stsp /*
  2 13b2bc37 2022-10-23 stsp  * Copyright (c) 2022 Stefan Sperling <stsp@openbsd.org>
  3 13b2bc37 2022-10-23 stsp  *
  4 13b2bc37 2022-10-23 stsp  * Permission to use, copy, modify, and distribute this software for any
  5 13b2bc37 2022-10-23 stsp  * purpose with or without fee is hereby granted, provided that the above
  6 13b2bc37 2022-10-23 stsp  * copyright notice and this permission notice appear in all copies.
  7 13b2bc37 2022-10-23 stsp  *
  8 13b2bc37 2022-10-23 stsp  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  9 13b2bc37 2022-10-23 stsp  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 10 13b2bc37 2022-10-23 stsp  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 11 13b2bc37 2022-10-23 stsp  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 12 13b2bc37 2022-10-23 stsp  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 13 13b2bc37 2022-10-23 stsp  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 14 13b2bc37 2022-10-23 stsp  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 15 13b2bc37 2022-10-23 stsp  */
 16 13b2bc37 2022-10-23 stsp 
 17 13b2bc37 2022-10-23 stsp #include <sys/queue.h>
 18 13b2bc37 2022-10-23 stsp #include <sys/tree.h>
 19 13b2bc37 2022-10-23 stsp #include <sys/stat.h>
 20 13b2bc37 2022-10-23 stsp 
 21 13b2bc37 2022-10-23 stsp #include <errno.h>
 22 13b2bc37 2022-10-23 stsp #include <limits.h>
 23 13b2bc37 2022-10-23 stsp #include <sha1.h>
 24 13b2bc37 2022-10-23 stsp #include <stdio.h>
 25 13b2bc37 2022-10-23 stsp #include <stdlib.h>
 26 13b2bc37 2022-10-23 stsp #include <string.h>
 27 13b2bc37 2022-10-23 stsp #include <unistd.h>
 28 13b2bc37 2022-10-23 stsp 
 29 13b2bc37 2022-10-23 stsp #include "got_error.h"
 30 13b2bc37 2022-10-23 stsp #include "got_object.h"
 31 13b2bc37 2022-10-23 stsp #include "got_repository.h"
 32 13b2bc37 2022-10-23 stsp #include "got_path.h"
 33 13b2bc37 2022-10-23 stsp 
 34 13b2bc37 2022-10-23 stsp #include "got_lib_delta.h"
 35 13b2bc37 2022-10-23 stsp #include "got_lib_object.h"
 36 13b2bc37 2022-10-23 stsp #include "got_lib_object_cache.h"
 37 13b2bc37 2022-10-23 stsp #include "got_lib_object_parse.h"
 38 13b2bc37 2022-10-23 stsp #include "got_lib_pack.h"
 39 13b2bc37 2022-10-23 stsp #include "got_lib_repository.h"
 40 13b2bc37 2022-10-23 stsp 
 41 13b2bc37 2022-10-23 stsp const struct got_error *
 42 13b2bc37 2022-10-23 stsp got_object_open_packed(struct got_object **obj, struct got_object_id *id,
 43 13b2bc37 2022-10-23 stsp     struct got_repository *repo)
 44 13b2bc37 2022-10-23 stsp {
 45 13b2bc37 2022-10-23 stsp 	const struct got_error *err = NULL;
 46 13b2bc37 2022-10-23 stsp 	struct got_pack *pack = NULL;
 47 13b2bc37 2022-10-23 stsp 	struct got_packidx *packidx = NULL;
 48 13b2bc37 2022-10-23 stsp 	int idx;
 49 13b2bc37 2022-10-23 stsp 	char *path_packfile;
 50 13b2bc37 2022-10-23 stsp 
 51 13b2bc37 2022-10-23 stsp 	err = got_repo_search_packidx(&packidx, &idx, repo, id);
 52 13b2bc37 2022-10-23 stsp 	if (err)
 53 13b2bc37 2022-10-23 stsp 		return err;
 54 13b2bc37 2022-10-23 stsp 
 55 13b2bc37 2022-10-23 stsp 	err = got_packidx_get_packfile_path(&path_packfile,
 56 13b2bc37 2022-10-23 stsp 	    packidx->path_packidx);
 57 13b2bc37 2022-10-23 stsp 	if (err)
 58 13b2bc37 2022-10-23 stsp 		return err;
 59 13b2bc37 2022-10-23 stsp 
 60 13b2bc37 2022-10-23 stsp 	pack = got_repo_get_cached_pack(repo, path_packfile);
 61 13b2bc37 2022-10-23 stsp 	if (pack == NULL) {
 62 13b2bc37 2022-10-23 stsp 		err = got_repo_cache_pack(&pack, repo, path_packfile, packidx);
 63 13b2bc37 2022-10-23 stsp 		if (err)
 64 13b2bc37 2022-10-23 stsp 			goto done;
 65 13b2bc37 2022-10-23 stsp 	}
 66 13b2bc37 2022-10-23 stsp 
 67 13b2bc37 2022-10-23 stsp 	err = got_packfile_open_object(obj, pack, packidx, idx, id);
 68 13b2bc37 2022-10-23 stsp 	if (err)
 69 13b2bc37 2022-10-23 stsp 		return err;
 70 13b2bc37 2022-10-23 stsp 	(*obj)->refcnt++;
 71 13b2bc37 2022-10-23 stsp 
 72 13b2bc37 2022-10-23 stsp 	err = got_repo_cache_object(repo, id, *obj);
 73 13b2bc37 2022-10-23 stsp 	if (err) {
 74 13b2bc37 2022-10-23 stsp 		if (err->code == GOT_ERR_OBJ_EXISTS ||
 75 13b2bc37 2022-10-23 stsp 		    err->code == GOT_ERR_OBJ_TOO_LARGE)
 76 13b2bc37 2022-10-23 stsp 			err = NULL;
 77 13b2bc37 2022-10-23 stsp 	}
 78 13b2bc37 2022-10-23 stsp done:
 79 13b2bc37 2022-10-23 stsp 	free(path_packfile);
 80 13b2bc37 2022-10-23 stsp 	return err;
 81 13b2bc37 2022-10-23 stsp }
 82 13b2bc37 2022-10-23 stsp 
 83 13b2bc37 2022-10-23 stsp const struct got_error *
 84 13b2bc37 2022-10-23 stsp got_object_open_from_packfile(struct got_object **obj, struct got_object_id *id,
 85 13b2bc37 2022-10-23 stsp     struct got_pack *pack, struct got_packidx *packidx, int obj_idx,
 86 13b2bc37 2022-10-23 stsp     struct got_repository *repo)
 87 13b2bc37 2022-10-23 stsp {
 88 13b2bc37 2022-10-23 stsp 	return got_error(GOT_ERR_NOT_IMPL);
 89 13b2bc37 2022-10-23 stsp }
 90 13b2bc37 2022-10-23 stsp 
 91 13b2bc37 2022-10-23 stsp const struct got_error *
 92 13b2bc37 2022-10-23 stsp got_object_read_raw_delta(uint64_t *base_size, uint64_t *result_size,
 93 13b2bc37 2022-10-23 stsp     off_t *delta_size, off_t *delta_compressed_size, off_t *delta_offset,
 94 13b2bc37 2022-10-23 stsp     off_t *delta_out_offset, struct got_object_id **base_id, int delta_cache_fd,
 95 13b2bc37 2022-10-23 stsp     struct got_packidx *packidx, int obj_idx, struct got_object_id *id,
 96 13b2bc37 2022-10-23 stsp     struct got_repository *repo)
 97 13b2bc37 2022-10-23 stsp {
 98 13b2bc37 2022-10-23 stsp 	return got_error(GOT_ERR_NOT_IMPL);
 99 13b2bc37 2022-10-23 stsp }
100 13b2bc37 2022-10-23 stsp 
101 13b2bc37 2022-10-23 stsp const struct got_error *
102 13b2bc37 2022-10-23 stsp got_object_open(struct got_object **obj, struct got_repository *repo,
103 13b2bc37 2022-10-23 stsp     struct got_object_id *id)
104 13b2bc37 2022-10-23 stsp {
105 13b2bc37 2022-10-23 stsp 	const struct got_error *err = NULL;
106 13b2bc37 2022-10-23 stsp 	int fd;
107 13b2bc37 2022-10-23 stsp 
108 13b2bc37 2022-10-23 stsp 	*obj = got_repo_get_cached_object(repo, id);
109 13b2bc37 2022-10-23 stsp 	if (*obj != NULL) {
110 13b2bc37 2022-10-23 stsp 		(*obj)->refcnt++;
111 13b2bc37 2022-10-23 stsp 		return NULL;
112 13b2bc37 2022-10-23 stsp 	}
113 13b2bc37 2022-10-23 stsp 
114 13b2bc37 2022-10-23 stsp 	err = got_object_open_packed(obj, id, repo);
115 13b2bc37 2022-10-23 stsp 	if (err) {
116 13b2bc37 2022-10-23 stsp 		if (err->code != GOT_ERR_NO_OBJ)
117 13b2bc37 2022-10-23 stsp 			return err;
118 13b2bc37 2022-10-23 stsp 	} else
119 13b2bc37 2022-10-23 stsp 		return NULL;
120 13b2bc37 2022-10-23 stsp 
121 13b2bc37 2022-10-23 stsp 	err = got_object_open_loose_fd(&fd, id, repo);
122 13b2bc37 2022-10-23 stsp 	if (err) {
123 13b2bc37 2022-10-23 stsp 		if (err->code == GOT_ERR_ERRNO && errno == ENOENT)
124 13b2bc37 2022-10-23 stsp 			err = got_error_no_obj(id);
125 13b2bc37 2022-10-23 stsp 		return err;
126 13b2bc37 2022-10-23 stsp 	}
127 13b2bc37 2022-10-23 stsp 
128 13b2bc37 2022-10-23 stsp 	err = got_object_read_header(obj, fd);
129 13b2bc37 2022-10-23 stsp 	if (err)
130 13b2bc37 2022-10-23 stsp 		goto done;
131 13b2bc37 2022-10-23 stsp 
132 13b2bc37 2022-10-23 stsp 	memcpy(&(*obj)->id, id, sizeof((*obj)->id));
133 13b2bc37 2022-10-23 stsp 	(*obj)->refcnt++;
134 13b2bc37 2022-10-23 stsp 
135 13b2bc37 2022-10-23 stsp 	err = got_repo_cache_object(repo, id, *obj);
136 13b2bc37 2022-10-23 stsp 	if (err) {
137 13b2bc37 2022-10-23 stsp 		if (err->code == GOT_ERR_OBJ_EXISTS ||
138 13b2bc37 2022-10-23 stsp 		    err->code == GOT_ERR_OBJ_TOO_LARGE)
139 13b2bc37 2022-10-23 stsp 			err = NULL;
140 13b2bc37 2022-10-23 stsp 	}
141 13b2bc37 2022-10-23 stsp done:
142 13b2bc37 2022-10-23 stsp 	if (close(fd) == -1 && err == NULL)
143 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("close");
144 13b2bc37 2022-10-23 stsp 	return err;
145 13b2bc37 2022-10-23 stsp }
146 13b2bc37 2022-10-23 stsp 
147 13b2bc37 2022-10-23 stsp static const struct got_error *
148 13b2bc37 2022-10-23 stsp wrap_fd(FILE **f, int wrapped_fd)
149 13b2bc37 2022-10-23 stsp {
150 13b2bc37 2022-10-23 stsp 	const struct got_error *err = NULL;
151 13b2bc37 2022-10-23 stsp 	int fd;
152 13b2bc37 2022-10-23 stsp 
153 13b2bc37 2022-10-23 stsp 	if (ftruncate(wrapped_fd, 0L) == -1)
154 13b2bc37 2022-10-23 stsp 		return got_error_from_errno("ftruncate");
155 13b2bc37 2022-10-23 stsp 
156 13b2bc37 2022-10-23 stsp 	if (lseek(wrapped_fd, 0L, SEEK_SET) == -1)
157 13b2bc37 2022-10-23 stsp 		return got_error_from_errno("lseek");
158 13b2bc37 2022-10-23 stsp 
159 13b2bc37 2022-10-23 stsp 	fd = dup(wrapped_fd);
160 13b2bc37 2022-10-23 stsp 	if (fd == -1)
161 13b2bc37 2022-10-23 stsp 		return got_error_from_errno("dup");
162 13b2bc37 2022-10-23 stsp 
163 13b2bc37 2022-10-23 stsp 	*f = fdopen(fd, "w+");
164 13b2bc37 2022-10-23 stsp 	if (*f == NULL) {
165 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("fdopen");
166 13b2bc37 2022-10-23 stsp 		close(fd);
167 13b2bc37 2022-10-23 stsp 	}
168 13b2bc37 2022-10-23 stsp 	return err;
169 13b2bc37 2022-10-23 stsp }
170 13b2bc37 2022-10-23 stsp 
171 13b2bc37 2022-10-23 stsp static const struct got_error *
172 13b2bc37 2022-10-23 stsp read_packed_object_raw(uint8_t **outbuf, off_t *size, size_t *hdrlen,
173 13b2bc37 2022-10-23 stsp     int outfd, struct got_pack *pack, struct got_packidx *packidx, int idx,
174 13b2bc37 2022-10-23 stsp     struct got_object_id *id)
175 13b2bc37 2022-10-23 stsp {
176 13b2bc37 2022-10-23 stsp 	const struct got_error *err = NULL;
177 13b2bc37 2022-10-23 stsp 	uint64_t raw_size = 0;
178 13b2bc37 2022-10-23 stsp 	struct got_object *obj;
179 13b2bc37 2022-10-23 stsp 	FILE *outfile = NULL, *basefile = NULL, *accumfile = NULL;
180 13b2bc37 2022-10-23 stsp 
181 13b2bc37 2022-10-23 stsp 	*outbuf = NULL;
182 13b2bc37 2022-10-23 stsp 	*size = 0;
183 13b2bc37 2022-10-23 stsp 	*hdrlen = 0;
184 13b2bc37 2022-10-23 stsp 
185 13b2bc37 2022-10-23 stsp 	err = got_packfile_open_object(&obj, pack, packidx, idx, id);
186 13b2bc37 2022-10-23 stsp 	if (err)
187 13b2bc37 2022-10-23 stsp 		return err;
188 13b2bc37 2022-10-23 stsp 
189 13b2bc37 2022-10-23 stsp 	if (obj->flags & GOT_OBJ_FLAG_DELTIFIED) {
190 13b2bc37 2022-10-23 stsp 		err = got_pack_get_max_delta_object_size(&raw_size, obj, pack);
191 13b2bc37 2022-10-23 stsp 		if (err)
192 13b2bc37 2022-10-23 stsp 			goto done;
193 13b2bc37 2022-10-23 stsp 	} else
194 13b2bc37 2022-10-23 stsp 		raw_size = obj->size;
195 13b2bc37 2022-10-23 stsp 
196 13b2bc37 2022-10-23 stsp 	if (raw_size <= GOT_DELTA_RESULT_SIZE_CACHED_MAX) {
197 13b2bc37 2022-10-23 stsp 		size_t len;
198 13b2bc37 2022-10-23 stsp 		err = got_packfile_extract_object_to_mem(outbuf, &len,
199 13b2bc37 2022-10-23 stsp 		    obj, pack);
200 13b2bc37 2022-10-23 stsp 		if (err)
201 13b2bc37 2022-10-23 stsp 			goto done;
202 13b2bc37 2022-10-23 stsp 		*size = (off_t)len;
203 13b2bc37 2022-10-23 stsp 	} else {
204 13b2bc37 2022-10-23 stsp 		/*
205 13b2bc37 2022-10-23 stsp 		 * XXX This uses 3 file extra descriptors for no good reason.
206 13b2bc37 2022-10-23 stsp 		 * We should have got_packfile_extract_object_to_fd().
207 13b2bc37 2022-10-23 stsp 		 */
208 13b2bc37 2022-10-23 stsp 		err = wrap_fd(&outfile, outfd);
209 13b2bc37 2022-10-23 stsp 		if (err)
210 13b2bc37 2022-10-23 stsp 			goto done;
211 13b2bc37 2022-10-23 stsp 		err = wrap_fd(&basefile, pack->basefd);
212 13b2bc37 2022-10-23 stsp 		if (err)
213 13b2bc37 2022-10-23 stsp 			goto done;
214 13b2bc37 2022-10-23 stsp 		err = wrap_fd(&accumfile, pack->accumfd);
215 13b2bc37 2022-10-23 stsp 		if (err)
216 13b2bc37 2022-10-23 stsp 			goto done;
217 13b2bc37 2022-10-23 stsp 		err = got_packfile_extract_object(pack, obj, outfile, basefile,
218 13b2bc37 2022-10-23 stsp 		    accumfile);
219 13b2bc37 2022-10-23 stsp 		if (err)
220 13b2bc37 2022-10-23 stsp 			goto done;
221 95bdb85d 2023-01-09 stsp 		*size = obj->size;
222 13b2bc37 2022-10-23 stsp 	}
223 13b2bc37 2022-10-23 stsp 
224 13b2bc37 2022-10-23 stsp 	*hdrlen = obj->hdrlen;
225 13b2bc37 2022-10-23 stsp done:
226 13b2bc37 2022-10-23 stsp 	got_object_close(obj);
227 13b2bc37 2022-10-23 stsp 	if (outfile && fclose(outfile) == EOF && err == NULL)
228 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("fclose");
229 13b2bc37 2022-10-23 stsp 	if (basefile && fclose(basefile) == EOF && err == NULL)
230 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("fclose");
231 13b2bc37 2022-10-23 stsp 	if (accumfile && fclose(accumfile) == EOF && err == NULL)
232 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("fclose");
233 13b2bc37 2022-10-23 stsp 	return err;
234 13b2bc37 2022-10-23 stsp 
235 13b2bc37 2022-10-23 stsp }
236 13b2bc37 2022-10-23 stsp 
237 13b2bc37 2022-10-23 stsp static void
238 13b2bc37 2022-10-23 stsp put_raw_object_tempfile(struct got_raw_object *obj)
239 13b2bc37 2022-10-23 stsp {
240 13b2bc37 2022-10-23 stsp 	struct got_repository *repo = obj->close_arg;
241 13b2bc37 2022-10-23 stsp 
242 13b2bc37 2022-10-23 stsp 	if (obj->tempfile_idx != -1)
243 13b2bc37 2022-10-23 stsp 		got_repo_temp_fds_put(obj->tempfile_idx, repo);
244 13b2bc37 2022-10-23 stsp }
245 13b2bc37 2022-10-23 stsp 
246 13b2bc37 2022-10-23 stsp /* *outfd must be initialized to -1 by caller */
247 13b2bc37 2022-10-23 stsp const struct got_error *
248 13b2bc37 2022-10-23 stsp got_object_raw_open(struct got_raw_object **obj, int *outfd,
249 13b2bc37 2022-10-23 stsp     struct got_repository *repo, struct got_object_id *id)
250 13b2bc37 2022-10-23 stsp {
251 13b2bc37 2022-10-23 stsp 	const struct got_error *err = NULL;
252 13b2bc37 2022-10-23 stsp 	struct got_packidx *packidx = NULL;
253 3a975a9f 2023-01-09 stsp 	int idx, tempfd, tempfile_idx;
254 13b2bc37 2022-10-23 stsp 	uint8_t *outbuf = NULL;
255 13b2bc37 2022-10-23 stsp 	off_t size = 0;
256 13b2bc37 2022-10-23 stsp 	size_t hdrlen = 0;
257 13b2bc37 2022-10-23 stsp 	char *path_packfile = NULL;
258 13b2bc37 2022-10-23 stsp 
259 13b2bc37 2022-10-23 stsp 	*obj = got_repo_get_cached_raw_object(repo, id);
260 13b2bc37 2022-10-23 stsp 	if (*obj != NULL) {
261 13b2bc37 2022-10-23 stsp 		(*obj)->refcnt++;
262 13b2bc37 2022-10-23 stsp 		return NULL;
263 13b2bc37 2022-10-23 stsp 	}
264 13b2bc37 2022-10-23 stsp 
265 3a975a9f 2023-01-09 stsp 	err = got_repo_temp_fds_get(&tempfd, &tempfile_idx, repo);
266 3a975a9f 2023-01-09 stsp 	if (err)
267 3a975a9f 2023-01-09 stsp 		return err;
268 13b2bc37 2022-10-23 stsp 
269 13b2bc37 2022-10-23 stsp 	err = got_repo_search_packidx(&packidx, &idx, repo, id);
270 13b2bc37 2022-10-23 stsp 	if (err == NULL) {
271 13b2bc37 2022-10-23 stsp 		struct got_pack *pack = NULL;
272 13b2bc37 2022-10-23 stsp 
273 13b2bc37 2022-10-23 stsp 		err = got_packidx_get_packfile_path(&path_packfile,
274 13b2bc37 2022-10-23 stsp 		    packidx->path_packidx);
275 13b2bc37 2022-10-23 stsp 		if (err)
276 13b2bc37 2022-10-23 stsp 			goto done;
277 13b2bc37 2022-10-23 stsp 
278 13b2bc37 2022-10-23 stsp 		pack = got_repo_get_cached_pack(repo, path_packfile);
279 13b2bc37 2022-10-23 stsp 		if (pack == NULL) {
280 13b2bc37 2022-10-23 stsp 			err = got_repo_cache_pack(&pack, repo, path_packfile,
281 13b2bc37 2022-10-23 stsp 			    packidx);
282 13b2bc37 2022-10-23 stsp 			if (err)
283 13b2bc37 2022-10-23 stsp 				goto done;
284 13b2bc37 2022-10-23 stsp 		}
285 13b2bc37 2022-10-23 stsp 		err = read_packed_object_raw(&outbuf, &size, &hdrlen,
286 3a975a9f 2023-01-09 stsp 		    tempfd, pack, packidx, idx, id);
287 13b2bc37 2022-10-23 stsp 		if (err)
288 13b2bc37 2022-10-23 stsp 			goto done;
289 13b2bc37 2022-10-23 stsp 	} else if (err->code == GOT_ERR_NO_OBJ) {
290 13b2bc37 2022-10-23 stsp 		int fd;
291 13b2bc37 2022-10-23 stsp 
292 13b2bc37 2022-10-23 stsp 		err = got_object_open_loose_fd(&fd, id, repo);
293 13b2bc37 2022-10-23 stsp 		if (err)
294 13b2bc37 2022-10-23 stsp 			goto done;
295 13b2bc37 2022-10-23 stsp 		err = got_object_read_raw(&outbuf, &size, &hdrlen,
296 3a975a9f 2023-01-09 stsp 		    GOT_DELTA_RESULT_SIZE_CACHED_MAX, tempfd, id, fd);
297 13b2bc37 2022-10-23 stsp 		if (close(fd) == -1 && err == NULL)
298 13b2bc37 2022-10-23 stsp 			err = got_error_from_errno("close");
299 13b2bc37 2022-10-23 stsp 		if (err)
300 3a975a9f 2023-01-09 stsp 			goto done;
301 3a975a9f 2023-01-09 stsp 	}
302 3a975a9f 2023-01-09 stsp 
303 3a975a9f 2023-01-09 stsp 	if (outbuf == NULL) {
304 3a975a9f 2023-01-09 stsp 		if (*outfd != -1) {
305 3a975a9f 2023-01-09 stsp 			err = got_error_msg(GOT_ERR_NOT_IMPL, "bad outfd");
306 3a975a9f 2023-01-09 stsp 			goto done;
307 3a975a9f 2023-01-09 stsp 		}
308 3a975a9f 2023-01-09 stsp 
309 3a975a9f 2023-01-09 stsp 		/*
310 3a975a9f 2023-01-09 stsp 		 * Duplicate tempfile descriptor to allow use of
311 3a975a9f 2023-01-09 stsp 		 * fdopen(3) inside got_object_raw_alloc().
312 3a975a9f 2023-01-09 stsp 		 */
313 3a975a9f 2023-01-09 stsp 		*outfd = dup(tempfd);
314 3a975a9f 2023-01-09 stsp 		if (*outfd == -1) {
315 3a975a9f 2023-01-09 stsp 			err = got_error_from_errno("dup");
316 13b2bc37 2022-10-23 stsp 			goto done;
317 3a975a9f 2023-01-09 stsp 		}
318 13b2bc37 2022-10-23 stsp 	}
319 13b2bc37 2022-10-23 stsp 
320 60c140ae 2023-01-09 stsp 	err = got_object_raw_alloc(obj, outbuf, outfd,
321 60c140ae 2023-01-09 stsp 	    GOT_DELTA_RESULT_SIZE_CACHED_MAX, hdrlen, size);
322 13b2bc37 2022-10-23 stsp 	if (err)
323 13b2bc37 2022-10-23 stsp 		goto done;
324 13b2bc37 2022-10-23 stsp 
325 13b2bc37 2022-10-23 stsp 	err = got_repo_cache_raw_object(repo, id, *obj);
326 13b2bc37 2022-10-23 stsp 	if (err) {
327 13b2bc37 2022-10-23 stsp 		if (err->code == GOT_ERR_OBJ_EXISTS ||
328 13b2bc37 2022-10-23 stsp 		    err->code == GOT_ERR_OBJ_TOO_LARGE)
329 13b2bc37 2022-10-23 stsp 			err = NULL;
330 13b2bc37 2022-10-23 stsp 	}
331 13b2bc37 2022-10-23 stsp done:
332 13b2bc37 2022-10-23 stsp 	free(path_packfile);
333 13b2bc37 2022-10-23 stsp 	if (err) {
334 13b2bc37 2022-10-23 stsp 		if (*obj) {
335 13b2bc37 2022-10-23 stsp 			got_object_raw_close(*obj);
336 13b2bc37 2022-10-23 stsp 			*obj = NULL;
337 13b2bc37 2022-10-23 stsp 		}
338 13b2bc37 2022-10-23 stsp 		free(outbuf);
339 3a975a9f 2023-01-09 stsp 		got_repo_temp_fds_put(tempfile_idx, repo);
340 3a975a9f 2023-01-09 stsp 		if (*outfd != -1) {
341 3a975a9f 2023-01-09 stsp 			close(*outfd);
342 3a975a9f 2023-01-09 stsp 			*outfd = -1;
343 3a975a9f 2023-01-09 stsp 		}
344 13b2bc37 2022-10-23 stsp 	} else {
345 3a975a9f 2023-01-09 stsp 		if (((*obj)->f == NULL && (*obj)->fd == -1)) {
346 3a975a9f 2023-01-09 stsp 			/* This raw object is not backed by a file. */
347 3a975a9f 2023-01-09 stsp 			got_repo_temp_fds_put(tempfile_idx, repo);
348 3a975a9f 2023-01-09 stsp 			if (*outfd != -1) {
349 3a975a9f 2023-01-09 stsp 				close(*outfd);
350 3a975a9f 2023-01-09 stsp 				*outfd = -1;
351 3a975a9f 2023-01-09 stsp 			}
352 3a975a9f 2023-01-09 stsp 		} else {
353 3a975a9f 2023-01-09 stsp 			(*obj)->tempfile_idx = tempfile_idx;
354 3a975a9f 2023-01-09 stsp 			(*obj)->close_cb = put_raw_object_tempfile;
355 3a975a9f 2023-01-09 stsp 			(*obj)->close_arg = repo;
356 3a975a9f 2023-01-09 stsp 		}
357 13b2bc37 2022-10-23 stsp 	}
358 13b2bc37 2022-10-23 stsp 	return err;
359 13b2bc37 2022-10-23 stsp }
360 13b2bc37 2022-10-23 stsp 
361 13b2bc37 2022-10-23 stsp static const struct got_error *
362 13b2bc37 2022-10-23 stsp open_commit(struct got_commit_object **commit,
363 13b2bc37 2022-10-23 stsp     struct got_repository *repo, struct got_object_id *id, int check_cache)
364 13b2bc37 2022-10-23 stsp {
365 13b2bc37 2022-10-23 stsp 	const struct got_error *err = NULL;
366 13b2bc37 2022-10-23 stsp 	struct got_packidx *packidx = NULL;
367 13b2bc37 2022-10-23 stsp 	int idx;
368 13b2bc37 2022-10-23 stsp 	char *path_packfile = NULL;
369 13b2bc37 2022-10-23 stsp 
370 13b2bc37 2022-10-23 stsp 	if (check_cache) {
371 13b2bc37 2022-10-23 stsp 		*commit = got_repo_get_cached_commit(repo, id);
372 13b2bc37 2022-10-23 stsp 		if (*commit != NULL) {
373 13b2bc37 2022-10-23 stsp 			(*commit)->refcnt++;
374 13b2bc37 2022-10-23 stsp 			return NULL;
375 13b2bc37 2022-10-23 stsp 		}
376 13b2bc37 2022-10-23 stsp 	} else
377 13b2bc37 2022-10-23 stsp 		*commit = NULL;
378 13b2bc37 2022-10-23 stsp 
379 13b2bc37 2022-10-23 stsp 	err = got_repo_search_packidx(&packidx, &idx, repo, id);
380 13b2bc37 2022-10-23 stsp 	if (err == NULL) {
381 13b2bc37 2022-10-23 stsp 		struct got_pack *pack = NULL;
382 13b2bc37 2022-10-23 stsp 		struct got_object *obj;
383 13b2bc37 2022-10-23 stsp 		uint8_t *buf;
384 13b2bc37 2022-10-23 stsp 		size_t len;
385 13b2bc37 2022-10-23 stsp 
386 13b2bc37 2022-10-23 stsp 		err = got_packidx_get_packfile_path(&path_packfile,
387 13b2bc37 2022-10-23 stsp 		    packidx->path_packidx);
388 13b2bc37 2022-10-23 stsp 		if (err)
389 13b2bc37 2022-10-23 stsp 			return err;
390 13b2bc37 2022-10-23 stsp 
391 13b2bc37 2022-10-23 stsp 		pack = got_repo_get_cached_pack(repo, path_packfile);
392 13b2bc37 2022-10-23 stsp 		if (pack == NULL) {
393 13b2bc37 2022-10-23 stsp 			err = got_repo_cache_pack(&pack, repo, path_packfile,
394 13b2bc37 2022-10-23 stsp 			    packidx);
395 13b2bc37 2022-10-23 stsp 			if (err)
396 13b2bc37 2022-10-23 stsp 				goto done;
397 13b2bc37 2022-10-23 stsp 		}
398 13b2bc37 2022-10-23 stsp 		err = got_packfile_open_object(&obj, pack, packidx, idx, id);
399 13b2bc37 2022-10-23 stsp 		if (err)
400 13b2bc37 2022-10-23 stsp 			goto done;
401 13b2bc37 2022-10-23 stsp 		err = got_packfile_extract_object_to_mem(&buf, &len,
402 13b2bc37 2022-10-23 stsp 		    obj, pack);
403 13b2bc37 2022-10-23 stsp 		got_object_close(obj);
404 13b2bc37 2022-10-23 stsp 		if (err)
405 13b2bc37 2022-10-23 stsp 			goto done;
406 13b2bc37 2022-10-23 stsp 		err = got_object_parse_commit(commit, buf, len);
407 13b2bc37 2022-10-23 stsp 		free(buf);
408 13b2bc37 2022-10-23 stsp 	} else if (err->code == GOT_ERR_NO_OBJ) {
409 13b2bc37 2022-10-23 stsp 		int fd;
410 13b2bc37 2022-10-23 stsp 
411 13b2bc37 2022-10-23 stsp 		err = got_object_open_loose_fd(&fd, id, repo);
412 13b2bc37 2022-10-23 stsp 		if (err)
413 13b2bc37 2022-10-23 stsp 			return err;
414 13b2bc37 2022-10-23 stsp 		err = got_object_read_commit(commit, fd, id, 0);
415 13b2bc37 2022-10-23 stsp 		if (close(fd) == -1 && err == NULL)
416 13b2bc37 2022-10-23 stsp 			err = got_error_from_errno("close");
417 13b2bc37 2022-10-23 stsp 		if (err)
418 13b2bc37 2022-10-23 stsp 			return err;
419 13b2bc37 2022-10-23 stsp 	}
420 13b2bc37 2022-10-23 stsp 
421 13b2bc37 2022-10-23 stsp 	if (err == NULL) {
422 13b2bc37 2022-10-23 stsp 		(*commit)->refcnt++;
423 13b2bc37 2022-10-23 stsp 		err = got_repo_cache_commit(repo, id, *commit);
424 13b2bc37 2022-10-23 stsp 		if (err) {
425 13b2bc37 2022-10-23 stsp 			if (err->code == GOT_ERR_OBJ_EXISTS ||
426 13b2bc37 2022-10-23 stsp 			    err->code == GOT_ERR_OBJ_TOO_LARGE)
427 13b2bc37 2022-10-23 stsp 				err = NULL;
428 13b2bc37 2022-10-23 stsp 		}
429 13b2bc37 2022-10-23 stsp 	}
430 13b2bc37 2022-10-23 stsp done:
431 13b2bc37 2022-10-23 stsp 	free(path_packfile);
432 13b2bc37 2022-10-23 stsp 	return err;
433 13b2bc37 2022-10-23 stsp }
434 13b2bc37 2022-10-23 stsp 
435 13b2bc37 2022-10-23 stsp const struct got_error *
436 13b2bc37 2022-10-23 stsp got_object_open_as_commit(struct got_commit_object **commit,
437 13b2bc37 2022-10-23 stsp     struct got_repository *repo, struct got_object_id *id)
438 13b2bc37 2022-10-23 stsp {
439 13b2bc37 2022-10-23 stsp 	*commit = got_repo_get_cached_commit(repo, id);
440 13b2bc37 2022-10-23 stsp 	if (*commit != NULL) {
441 13b2bc37 2022-10-23 stsp 		(*commit)->refcnt++;
442 13b2bc37 2022-10-23 stsp 		return NULL;
443 13b2bc37 2022-10-23 stsp 	}
444 13b2bc37 2022-10-23 stsp 
445 13b2bc37 2022-10-23 stsp 	return open_commit(commit, repo, id, 0);
446 13b2bc37 2022-10-23 stsp }
447 13b2bc37 2022-10-23 stsp 
448 13b2bc37 2022-10-23 stsp const struct got_error *
449 13b2bc37 2022-10-23 stsp got_object_commit_open(struct got_commit_object **commit,
450 13b2bc37 2022-10-23 stsp     struct got_repository *repo, struct got_object *obj)
451 13b2bc37 2022-10-23 stsp {
452 13b2bc37 2022-10-23 stsp 	return open_commit(commit, repo, got_object_get_id(obj), 1);
453 13b2bc37 2022-10-23 stsp }
454 13b2bc37 2022-10-23 stsp 
455 13b2bc37 2022-10-23 stsp static const struct got_error *
456 13b2bc37 2022-10-23 stsp open_tree(struct got_tree_object **tree,
457 13b2bc37 2022-10-23 stsp     struct got_repository *repo, struct got_object_id *id, int check_cache)
458 13b2bc37 2022-10-23 stsp {
459 13b2bc37 2022-10-23 stsp 	const struct got_error *err = NULL;
460 13b2bc37 2022-10-23 stsp 	struct got_packidx *packidx = NULL;
461 13b2bc37 2022-10-23 stsp 	int idx;
462 13b2bc37 2022-10-23 stsp 	char *path_packfile = NULL;
463 13b2bc37 2022-10-23 stsp 	struct got_parsed_tree_entry *entries = NULL;
464 13b2bc37 2022-10-23 stsp 	size_t nentries = 0, nentries_alloc = 0, i;
465 13b2bc37 2022-10-23 stsp 	uint8_t *buf = NULL;
466 13b2bc37 2022-10-23 stsp 
467 13b2bc37 2022-10-23 stsp 	if (check_cache) {
468 13b2bc37 2022-10-23 stsp 		*tree = got_repo_get_cached_tree(repo, id);
469 13b2bc37 2022-10-23 stsp 		if (*tree != NULL) {
470 13b2bc37 2022-10-23 stsp 			(*tree)->refcnt++;
471 13b2bc37 2022-10-23 stsp 			return NULL;
472 13b2bc37 2022-10-23 stsp 		}
473 13b2bc37 2022-10-23 stsp 	} else
474 13b2bc37 2022-10-23 stsp 		*tree = NULL;
475 13b2bc37 2022-10-23 stsp 
476 13b2bc37 2022-10-23 stsp 	err = got_repo_search_packidx(&packidx, &idx, repo, id);
477 13b2bc37 2022-10-23 stsp 	if (err == NULL) {
478 13b2bc37 2022-10-23 stsp 		struct got_pack *pack = NULL;
479 13b2bc37 2022-10-23 stsp 		struct got_object *obj;
480 13b2bc37 2022-10-23 stsp 		size_t len;
481 13b2bc37 2022-10-23 stsp 
482 13b2bc37 2022-10-23 stsp 		err = got_packidx_get_packfile_path(&path_packfile,
483 13b2bc37 2022-10-23 stsp 		    packidx->path_packidx);
484 13b2bc37 2022-10-23 stsp 		if (err)
485 13b2bc37 2022-10-23 stsp 			return err;
486 13b2bc37 2022-10-23 stsp 
487 13b2bc37 2022-10-23 stsp 		pack = got_repo_get_cached_pack(repo, path_packfile);
488 13b2bc37 2022-10-23 stsp 		if (pack == NULL) {
489 13b2bc37 2022-10-23 stsp 			err = got_repo_cache_pack(&pack, repo, path_packfile,
490 13b2bc37 2022-10-23 stsp 			    packidx);
491 13b2bc37 2022-10-23 stsp 			if (err)
492 13b2bc37 2022-10-23 stsp 				goto done;
493 13b2bc37 2022-10-23 stsp 		}
494 13b2bc37 2022-10-23 stsp 		err = got_packfile_open_object(&obj, pack, packidx, idx, id);
495 13b2bc37 2022-10-23 stsp 		if (err)
496 13b2bc37 2022-10-23 stsp 			goto done;
497 13b2bc37 2022-10-23 stsp 		err = got_packfile_extract_object_to_mem(&buf, &len,
498 13b2bc37 2022-10-23 stsp 		    obj, pack);
499 13b2bc37 2022-10-23 stsp 		got_object_close(obj);
500 13b2bc37 2022-10-23 stsp 		if (err)
501 13b2bc37 2022-10-23 stsp 			goto done;
502 13b2bc37 2022-10-23 stsp 		err = got_object_parse_tree(&entries, &nentries,
503 13b2bc37 2022-10-23 stsp 		    &nentries_alloc, buf, len);
504 13b2bc37 2022-10-23 stsp 		if (err)
505 13b2bc37 2022-10-23 stsp 			goto done;
506 13b2bc37 2022-10-23 stsp 	} else if (err->code == GOT_ERR_NO_OBJ) {
507 13b2bc37 2022-10-23 stsp 		int fd;
508 13b2bc37 2022-10-23 stsp 
509 13b2bc37 2022-10-23 stsp 		err = got_object_open_loose_fd(&fd, id, repo);
510 13b2bc37 2022-10-23 stsp 		if (err)
511 13b2bc37 2022-10-23 stsp 			return err;
512 13b2bc37 2022-10-23 stsp 		err = got_object_read_tree(&entries, &nentries,
513 13b2bc37 2022-10-23 stsp 		    &nentries_alloc, &buf, fd, id);
514 13b2bc37 2022-10-23 stsp 		if (close(fd) == -1 && err == NULL)
515 13b2bc37 2022-10-23 stsp 			err = got_error_from_errno("close");
516 13b2bc37 2022-10-23 stsp 		if (err)
517 13b2bc37 2022-10-23 stsp 			goto done;
518 13b2bc37 2022-10-23 stsp 	} else
519 13b2bc37 2022-10-23 stsp 		goto done;
520 13b2bc37 2022-10-23 stsp 
521 13b2bc37 2022-10-23 stsp 	*tree = malloc(sizeof(**tree));
522 13b2bc37 2022-10-23 stsp 	if (*tree == NULL) {
523 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("malloc");
524 13b2bc37 2022-10-23 stsp 		goto done;
525 13b2bc37 2022-10-23 stsp 	}
526 13b2bc37 2022-10-23 stsp 	(*tree)->entries = calloc(nentries, sizeof(struct got_tree_entry));
527 13b2bc37 2022-10-23 stsp 	if ((*tree)->entries == NULL) {
528 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("malloc");
529 13b2bc37 2022-10-23 stsp 		goto done;
530 13b2bc37 2022-10-23 stsp 	}
531 13b2bc37 2022-10-23 stsp 	(*tree)->nentries = nentries;
532 13b2bc37 2022-10-23 stsp 	(*tree)->refcnt = 0;
533 13b2bc37 2022-10-23 stsp 
534 13b2bc37 2022-10-23 stsp 	for (i = 0; i < nentries; i++) {
535 13b2bc37 2022-10-23 stsp 		struct got_parsed_tree_entry *pe = &entries[i];
536 13b2bc37 2022-10-23 stsp 		struct got_tree_entry *te = &(*tree)->entries[i];
537 13b2bc37 2022-10-23 stsp 	
538 13b2bc37 2022-10-23 stsp 		if (strlcpy(te->name, pe->name,
539 13b2bc37 2022-10-23 stsp 		    sizeof(te->name)) >= sizeof(te->name)) {
540 13b2bc37 2022-10-23 stsp 			err = got_error(GOT_ERR_NO_SPACE);
541 13b2bc37 2022-10-23 stsp 			goto done;
542 13b2bc37 2022-10-23 stsp 		}
543 13b2bc37 2022-10-23 stsp 		memcpy(te->id.sha1, pe->id, SHA1_DIGEST_LENGTH);
544 13b2bc37 2022-10-23 stsp 		te->mode = pe->mode;
545 13b2bc37 2022-10-23 stsp 		te->idx = i;
546 13b2bc37 2022-10-23 stsp 	}
547 13b2bc37 2022-10-23 stsp done:
548 13b2bc37 2022-10-23 stsp 	free(path_packfile);
549 13b2bc37 2022-10-23 stsp 	free(entries);
550 13b2bc37 2022-10-23 stsp 	free(buf);
551 13b2bc37 2022-10-23 stsp 	if (err == NULL) {
552 13b2bc37 2022-10-23 stsp 		(*tree)->refcnt++;
553 13b2bc37 2022-10-23 stsp 		err = got_repo_cache_tree(repo, id, *tree);
554 13b2bc37 2022-10-23 stsp 		if (err) {
555 13b2bc37 2022-10-23 stsp 			if (err->code == GOT_ERR_OBJ_EXISTS ||
556 13b2bc37 2022-10-23 stsp 			    err->code == GOT_ERR_OBJ_TOO_LARGE)
557 13b2bc37 2022-10-23 stsp 				err = NULL;
558 13b2bc37 2022-10-23 stsp 		}
559 13b2bc37 2022-10-23 stsp 	}
560 13b2bc37 2022-10-23 stsp 	if (err) {
561 13b2bc37 2022-10-23 stsp 		if (*tree)
562 13b2bc37 2022-10-23 stsp 			free((*tree)->entries);
563 13b2bc37 2022-10-23 stsp 		free(*tree);
564 13b2bc37 2022-10-23 stsp 		*tree = NULL;
565 13b2bc37 2022-10-23 stsp 	}
566 13b2bc37 2022-10-23 stsp 	return err;
567 13b2bc37 2022-10-23 stsp }
568 13b2bc37 2022-10-23 stsp 
569 13b2bc37 2022-10-23 stsp const struct got_error *
570 13b2bc37 2022-10-23 stsp got_object_open_as_tree(struct got_tree_object **tree,
571 13b2bc37 2022-10-23 stsp     struct got_repository *repo, struct got_object_id *id)
572 13b2bc37 2022-10-23 stsp {
573 13b2bc37 2022-10-23 stsp 	*tree = got_repo_get_cached_tree(repo, id);
574 13b2bc37 2022-10-23 stsp 	if (*tree != NULL) {
575 13b2bc37 2022-10-23 stsp 		(*tree)->refcnt++;
576 13b2bc37 2022-10-23 stsp 		return NULL;
577 13b2bc37 2022-10-23 stsp 	}
578 13b2bc37 2022-10-23 stsp 
579 13b2bc37 2022-10-23 stsp 	return open_tree(tree, repo, id, 0);
580 13b2bc37 2022-10-23 stsp }
581 13b2bc37 2022-10-23 stsp 
582 13b2bc37 2022-10-23 stsp const struct got_error *
583 13b2bc37 2022-10-23 stsp got_object_tree_open(struct got_tree_object **tree,
584 13b2bc37 2022-10-23 stsp     struct got_repository *repo, struct got_object *obj)
585 13b2bc37 2022-10-23 stsp {
586 13b2bc37 2022-10-23 stsp 	return open_tree(tree, repo, got_object_get_id(obj), 1);
587 13b2bc37 2022-10-23 stsp }
588 13b2bc37 2022-10-23 stsp 
589 13b2bc37 2022-10-23 stsp const struct got_error *
590 13b2bc37 2022-10-23 stsp got_object_open_as_blob(struct got_blob_object **blob,
591 13b2bc37 2022-10-23 stsp     struct got_repository *repo, struct got_object_id *id, size_t blocksize,
592 13b2bc37 2022-10-23 stsp     int outfd)
593 13b2bc37 2022-10-23 stsp {
594 13b2bc37 2022-10-23 stsp 	return got_error(GOT_ERR_NOT_IMPL);
595 13b2bc37 2022-10-23 stsp }
596 13b2bc37 2022-10-23 stsp 
597 13b2bc37 2022-10-23 stsp const struct got_error *
598 13b2bc37 2022-10-23 stsp got_object_blob_open(struct got_blob_object **blob,
599 13b2bc37 2022-10-23 stsp     struct got_repository *repo, struct got_object *obj, size_t blocksize,
600 13b2bc37 2022-10-23 stsp     int outfd)
601 13b2bc37 2022-10-23 stsp {
602 13b2bc37 2022-10-23 stsp 	return got_error(GOT_ERR_NOT_IMPL);
603 13b2bc37 2022-10-23 stsp }
604 13b2bc37 2022-10-23 stsp 
605 13b2bc37 2022-10-23 stsp static const struct got_error *
606 13b2bc37 2022-10-23 stsp open_tag(struct got_tag_object **tag, struct got_repository *repo,
607 13b2bc37 2022-10-23 stsp     struct got_object_id *id, int check_cache)
608 13b2bc37 2022-10-23 stsp {
609 13b2bc37 2022-10-23 stsp 	const struct got_error *err = NULL;
610 13b2bc37 2022-10-23 stsp 	struct got_packidx *packidx = NULL;
611 13b2bc37 2022-10-23 stsp 	int idx;
612 13b2bc37 2022-10-23 stsp 	char *path_packfile = NULL;
613 13b2bc37 2022-10-23 stsp 	struct got_object *obj = NULL;
614 13b2bc37 2022-10-23 stsp 	int obj_type = GOT_OBJ_TYPE_ANY;
615 13b2bc37 2022-10-23 stsp 
616 13b2bc37 2022-10-23 stsp 	if (check_cache) {
617 13b2bc37 2022-10-23 stsp 		*tag = got_repo_get_cached_tag(repo, id);
618 13b2bc37 2022-10-23 stsp 		if (*tag != NULL) {
619 13b2bc37 2022-10-23 stsp 			(*tag)->refcnt++;
620 13b2bc37 2022-10-23 stsp 			return NULL;
621 13b2bc37 2022-10-23 stsp 		}
622 13b2bc37 2022-10-23 stsp 	} else
623 13b2bc37 2022-10-23 stsp 		*tag = NULL;
624 13b2bc37 2022-10-23 stsp 
625 13b2bc37 2022-10-23 stsp 	err = got_repo_search_packidx(&packidx, &idx, repo, id);
626 13b2bc37 2022-10-23 stsp 	if (err == NULL) {
627 13b2bc37 2022-10-23 stsp 		struct got_pack *pack = NULL;
628 13b2bc37 2022-10-23 stsp 		uint8_t *buf = NULL;
629 13b2bc37 2022-10-23 stsp 		size_t len;
630 13b2bc37 2022-10-23 stsp 
631 13b2bc37 2022-10-23 stsp 		err = got_packidx_get_packfile_path(&path_packfile,
632 13b2bc37 2022-10-23 stsp 		    packidx->path_packidx);
633 13b2bc37 2022-10-23 stsp 		if (err)
634 13b2bc37 2022-10-23 stsp 			return err;
635 13b2bc37 2022-10-23 stsp 
636 13b2bc37 2022-10-23 stsp 		pack = got_repo_get_cached_pack(repo, path_packfile);
637 13b2bc37 2022-10-23 stsp 		if (pack == NULL) {
638 13b2bc37 2022-10-23 stsp 			err = got_repo_cache_pack(&pack, repo, path_packfile,
639 13b2bc37 2022-10-23 stsp 			    packidx);
640 13b2bc37 2022-10-23 stsp 			if (err)
641 13b2bc37 2022-10-23 stsp 				goto done;
642 13b2bc37 2022-10-23 stsp 		}
643 13b2bc37 2022-10-23 stsp 
644 13b2bc37 2022-10-23 stsp 		/* Beware of "lightweight" tags: Check object type first. */
645 13b2bc37 2022-10-23 stsp 		err = got_packfile_open_object(&obj, pack, packidx, idx, id);
646 13b2bc37 2022-10-23 stsp 		if (err)
647 13b2bc37 2022-10-23 stsp 			goto done;
648 13b2bc37 2022-10-23 stsp 		obj_type = obj->type;
649 13b2bc37 2022-10-23 stsp 		if (obj_type != GOT_OBJ_TYPE_TAG) {
650 13b2bc37 2022-10-23 stsp 			err = got_error(GOT_ERR_OBJ_TYPE);
651 13b2bc37 2022-10-23 stsp 			got_object_close(obj);
652 13b2bc37 2022-10-23 stsp 			goto done;
653 13b2bc37 2022-10-23 stsp 		}
654 13b2bc37 2022-10-23 stsp 		err = got_packfile_extract_object_to_mem(&buf, &len,
655 13b2bc37 2022-10-23 stsp 		    obj, pack);
656 13b2bc37 2022-10-23 stsp 		got_object_close(obj);
657 13b2bc37 2022-10-23 stsp 		if (err)
658 13b2bc37 2022-10-23 stsp 			goto done;
659 13b2bc37 2022-10-23 stsp 		err = got_object_parse_tag(tag, buf, len);
660 13b2bc37 2022-10-23 stsp 		free(buf);
661 13b2bc37 2022-10-23 stsp 	} else if (err->code == GOT_ERR_NO_OBJ) {
662 13b2bc37 2022-10-23 stsp 		int fd;
663 13b2bc37 2022-10-23 stsp 
664 13b2bc37 2022-10-23 stsp 		err = got_object_open_loose_fd(&fd, id, repo);
665 13b2bc37 2022-10-23 stsp 		if (err)
666 13b2bc37 2022-10-23 stsp 			return err;
667 13b2bc37 2022-10-23 stsp 		err = got_object_read_header(&obj, fd);
668 13b2bc37 2022-10-23 stsp 		if (close(fd) == -1 && err == NULL)
669 13b2bc37 2022-10-23 stsp 			err = got_error_from_errno("close");
670 13b2bc37 2022-10-23 stsp 		if (err)
671 13b2bc37 2022-10-23 stsp 			return err;
672 13b2bc37 2022-10-23 stsp 		obj_type = obj->type;
673 13b2bc37 2022-10-23 stsp 		got_object_close(obj);
674 13b2bc37 2022-10-23 stsp 		if (obj_type != GOT_OBJ_TYPE_TAG)
675 13b2bc37 2022-10-23 stsp 			return got_error(GOT_ERR_OBJ_TYPE);
676 13b2bc37 2022-10-23 stsp 
677 13b2bc37 2022-10-23 stsp 		err = got_object_open_loose_fd(&fd, id, repo);
678 13b2bc37 2022-10-23 stsp 		if (err)
679 13b2bc37 2022-10-23 stsp 			return err;
680 13b2bc37 2022-10-23 stsp 		err = got_object_read_tag(tag, fd, id, 0);
681 13b2bc37 2022-10-23 stsp 		if (close(fd) == -1 && err == NULL)
682 13b2bc37 2022-10-23 stsp 			err = got_error_from_errno("close");
683 13b2bc37 2022-10-23 stsp 		if (err)
684 13b2bc37 2022-10-23 stsp 			return err;
685 13b2bc37 2022-10-23 stsp 	}
686 13b2bc37 2022-10-23 stsp 
687 13b2bc37 2022-10-23 stsp 	if (err == NULL) {
688 13b2bc37 2022-10-23 stsp 		(*tag)->refcnt++;
689 13b2bc37 2022-10-23 stsp 		err = got_repo_cache_tag(repo, id, *tag);
690 13b2bc37 2022-10-23 stsp 		if (err) {
691 13b2bc37 2022-10-23 stsp 			if (err->code == GOT_ERR_OBJ_EXISTS ||
692 13b2bc37 2022-10-23 stsp 			    err->code == GOT_ERR_OBJ_TOO_LARGE)
693 13b2bc37 2022-10-23 stsp 				err = NULL;
694 13b2bc37 2022-10-23 stsp 		}
695 13b2bc37 2022-10-23 stsp 	}
696 13b2bc37 2022-10-23 stsp done:
697 13b2bc37 2022-10-23 stsp 	free(path_packfile);
698 13b2bc37 2022-10-23 stsp 	return err;
699 13b2bc37 2022-10-23 stsp }
700 13b2bc37 2022-10-23 stsp 
701 13b2bc37 2022-10-23 stsp const struct got_error *
702 13b2bc37 2022-10-23 stsp got_object_open_as_tag(struct got_tag_object **tag,
703 13b2bc37 2022-10-23 stsp     struct got_repository *repo, struct got_object_id *id)
704 13b2bc37 2022-10-23 stsp {
705 13b2bc37 2022-10-23 stsp 	*tag = got_repo_get_cached_tag(repo, id);
706 13b2bc37 2022-10-23 stsp 	if (*tag != NULL) {
707 13b2bc37 2022-10-23 stsp 		(*tag)->refcnt++;
708 13b2bc37 2022-10-23 stsp 		return NULL;
709 13b2bc37 2022-10-23 stsp 	}
710 13b2bc37 2022-10-23 stsp 
711 13b2bc37 2022-10-23 stsp 	return open_tag(tag, repo, id, 0);
712 13b2bc37 2022-10-23 stsp }
713 13b2bc37 2022-10-23 stsp 
714 13b2bc37 2022-10-23 stsp const struct got_error *
715 13b2bc37 2022-10-23 stsp got_object_tag_open(struct got_tag_object **tag,
716 13b2bc37 2022-10-23 stsp     struct got_repository *repo, struct got_object *obj)
717 13b2bc37 2022-10-23 stsp {
718 13b2bc37 2022-10-23 stsp 	return open_tag(tag, repo, got_object_get_id(obj), 1);
719 13b2bc37 2022-10-23 stsp }