1 3efd8e31 2022-10-23 thomas /*
  2 3efd8e31 2022-10-23 thomas  * Copyright (c) 2022 Stefan Sperling <stsp@openbsd.org>
  3 3efd8e31 2022-10-23 thomas  *
  4 3efd8e31 2022-10-23 thomas  * Permission to use, copy, modify, and distribute this software for any
  5 3efd8e31 2022-10-23 thomas  * purpose with or without fee is hereby granted, provided that the above
  6 3efd8e31 2022-10-23 thomas  * copyright notice and this permission notice appear in all copies.
  7 3efd8e31 2022-10-23 thomas  *
  8 3efd8e31 2022-10-23 thomas  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  9 3efd8e31 2022-10-23 thomas  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 10 3efd8e31 2022-10-23 thomas  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 11 3efd8e31 2022-10-23 thomas  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 12 3efd8e31 2022-10-23 thomas  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 13 3efd8e31 2022-10-23 thomas  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 14 3efd8e31 2022-10-23 thomas  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 15 3efd8e31 2022-10-23 thomas  */
 16 4efc8dcb 2023-08-29 thomas 
 17 4efc8dcb 2023-08-29 thomas #include "got_compat.h"
 18 3efd8e31 2022-10-23 thomas 
 19 3efd8e31 2022-10-23 thomas #include <sys/queue.h>
 20 3efd8e31 2022-10-23 thomas #include <sys/stat.h>
 21 3efd8e31 2022-10-23 thomas 
 22 3efd8e31 2022-10-23 thomas #include <errno.h>
 23 3efd8e31 2022-10-23 thomas #include <limits.h>
 24 3efd8e31 2022-10-23 thomas #include <stdio.h>
 25 3efd8e31 2022-10-23 thomas #include <stdlib.h>
 26 3efd8e31 2022-10-23 thomas #include <string.h>
 27 3efd8e31 2022-10-23 thomas #include <unistd.h>
 28 db642191 2024-03-30 thomas #include <zlib.h>
 29 3efd8e31 2022-10-23 thomas 
 30 3efd8e31 2022-10-23 thomas #include "got_error.h"
 31 3efd8e31 2022-10-23 thomas #include "got_object.h"
 32 3efd8e31 2022-10-23 thomas #include "got_repository.h"
 33 3efd8e31 2022-10-23 thomas #include "got_path.h"
 34 3efd8e31 2022-10-23 thomas 
 35 3efd8e31 2022-10-23 thomas #include "got_lib_delta.h"
 36 3efd8e31 2022-10-23 thomas #include "got_lib_object.h"
 37 3efd8e31 2022-10-23 thomas #include "got_lib_object_cache.h"
 38 3efd8e31 2022-10-23 thomas #include "got_lib_object_parse.h"
 39 3efd8e31 2022-10-23 thomas #include "got_lib_pack.h"
 40 3efd8e31 2022-10-23 thomas #include "got_lib_repository.h"
 41 db642191 2024-03-30 thomas #include "got_lib_inflate.h"
 42 db642191 2024-03-30 thomas #include "got_lib_hash.h"
 43 3efd8e31 2022-10-23 thomas 
 44 3efd8e31 2022-10-23 thomas const struct got_error *
 45 3efd8e31 2022-10-23 thomas got_object_open_packed(struct got_object **obj, struct got_object_id *id,
 46 3efd8e31 2022-10-23 thomas     struct got_repository *repo)
 47 3efd8e31 2022-10-23 thomas {
 48 3efd8e31 2022-10-23 thomas 	const struct got_error *err = NULL;
 49 3efd8e31 2022-10-23 thomas 	struct got_pack *pack = NULL;
 50 3efd8e31 2022-10-23 thomas 	struct got_packidx *packidx = NULL;
 51 3efd8e31 2022-10-23 thomas 	int idx;
 52 3efd8e31 2022-10-23 thomas 	char *path_packfile;
 53 3efd8e31 2022-10-23 thomas 
 54 3efd8e31 2022-10-23 thomas 	err = got_repo_search_packidx(&packidx, &idx, repo, id);
 55 3efd8e31 2022-10-23 thomas 	if (err)
 56 3efd8e31 2022-10-23 thomas 		return err;
 57 3efd8e31 2022-10-23 thomas 
 58 3efd8e31 2022-10-23 thomas 	err = got_packidx_get_packfile_path(&path_packfile,
 59 3efd8e31 2022-10-23 thomas 	    packidx->path_packidx);
 60 3efd8e31 2022-10-23 thomas 	if (err)
 61 3efd8e31 2022-10-23 thomas 		return err;
 62 3efd8e31 2022-10-23 thomas 
 63 3efd8e31 2022-10-23 thomas 	pack = got_repo_get_cached_pack(repo, path_packfile);
 64 3efd8e31 2022-10-23 thomas 	if (pack == NULL) {
 65 3efd8e31 2022-10-23 thomas 		err = got_repo_cache_pack(&pack, repo, path_packfile, packidx);
 66 3efd8e31 2022-10-23 thomas 		if (err)
 67 3efd8e31 2022-10-23 thomas 			goto done;
 68 3efd8e31 2022-10-23 thomas 	}
 69 3efd8e31 2022-10-23 thomas 
 70 3efd8e31 2022-10-23 thomas 	err = got_packfile_open_object(obj, pack, packidx, idx, id);
 71 3efd8e31 2022-10-23 thomas 	if (err)
 72 3efd8e31 2022-10-23 thomas 		return err;
 73 3efd8e31 2022-10-23 thomas 	(*obj)->refcnt++;
 74 3efd8e31 2022-10-23 thomas 
 75 3efd8e31 2022-10-23 thomas 	err = got_repo_cache_object(repo, id, *obj);
 76 3efd8e31 2022-10-23 thomas 	if (err) {
 77 3efd8e31 2022-10-23 thomas 		if (err->code == GOT_ERR_OBJ_EXISTS ||
 78 3efd8e31 2022-10-23 thomas 		    err->code == GOT_ERR_OBJ_TOO_LARGE)
 79 3efd8e31 2022-10-23 thomas 			err = NULL;
 80 3efd8e31 2022-10-23 thomas 	}
 81 3efd8e31 2022-10-23 thomas done:
 82 3efd8e31 2022-10-23 thomas 	free(path_packfile);
 83 3efd8e31 2022-10-23 thomas 	return err;
 84 3efd8e31 2022-10-23 thomas }
 85 3efd8e31 2022-10-23 thomas 
 86 3efd8e31 2022-10-23 thomas const struct got_error *
 87 3efd8e31 2022-10-23 thomas got_object_open_from_packfile(struct got_object **obj, struct got_object_id *id,
 88 3efd8e31 2022-10-23 thomas     struct got_pack *pack, struct got_packidx *packidx, int obj_idx,
 89 3efd8e31 2022-10-23 thomas     struct got_repository *repo)
 90 3efd8e31 2022-10-23 thomas {
 91 6d7eb4f7 2023-04-04 thomas 	const struct got_error *err;
 92 6d7eb4f7 2023-04-04 thomas 
 93 6d7eb4f7 2023-04-04 thomas 	*obj = got_repo_get_cached_object(repo, id);
 94 6d7eb4f7 2023-04-04 thomas 	if (*obj != NULL) {
 95 6d7eb4f7 2023-04-04 thomas 		(*obj)->refcnt++;
 96 6d7eb4f7 2023-04-04 thomas 		return NULL;
 97 6d7eb4f7 2023-04-04 thomas 	}
 98 6d7eb4f7 2023-04-04 thomas 
 99 6d7eb4f7 2023-04-04 thomas 	err = got_packfile_open_object(obj, pack, packidx, obj_idx, id);
100 6d7eb4f7 2023-04-04 thomas 	if (err)
101 6d7eb4f7 2023-04-04 thomas 		return err;
102 6d7eb4f7 2023-04-04 thomas 	(*obj)->refcnt++;
103 6d7eb4f7 2023-04-04 thomas 
104 6d7eb4f7 2023-04-04 thomas 	err = got_repo_cache_object(repo, id, *obj);
105 6d7eb4f7 2023-04-04 thomas 	if (err) {
106 6d7eb4f7 2023-04-04 thomas 		if (err->code == GOT_ERR_OBJ_EXISTS ||
107 6d7eb4f7 2023-04-04 thomas 		    err->code == GOT_ERR_OBJ_TOO_LARGE)
108 6d7eb4f7 2023-04-04 thomas 			err = NULL;
109 6d7eb4f7 2023-04-04 thomas 		return err;
110 6d7eb4f7 2023-04-04 thomas 	}
111 6d7eb4f7 2023-04-04 thomas 	(*obj)->refcnt++;
112 6d7eb4f7 2023-04-04 thomas 	return NULL;
113 3efd8e31 2022-10-23 thomas }
114 3efd8e31 2022-10-23 thomas 
115 3efd8e31 2022-10-23 thomas const struct got_error *
116 3efd8e31 2022-10-23 thomas got_object_read_raw_delta(uint64_t *base_size, uint64_t *result_size,
117 3efd8e31 2022-10-23 thomas     off_t *delta_size, off_t *delta_compressed_size, off_t *delta_offset,
118 3efd8e31 2022-10-23 thomas     off_t *delta_out_offset, struct got_object_id **base_id, int delta_cache_fd,
119 3efd8e31 2022-10-23 thomas     struct got_packidx *packidx, int obj_idx, struct got_object_id *id,
120 3efd8e31 2022-10-23 thomas     struct got_repository *repo)
121 3efd8e31 2022-10-23 thomas {
122 3efd8e31 2022-10-23 thomas 	return got_error(GOT_ERR_NOT_IMPL);
123 3efd8e31 2022-10-23 thomas }
124 3efd8e31 2022-10-23 thomas 
125 3efd8e31 2022-10-23 thomas const struct got_error *
126 3efd8e31 2022-10-23 thomas got_object_open(struct got_object **obj, struct got_repository *repo,
127 3efd8e31 2022-10-23 thomas     struct got_object_id *id)
128 3efd8e31 2022-10-23 thomas {
129 3efd8e31 2022-10-23 thomas 	const struct got_error *err = NULL;
130 3efd8e31 2022-10-23 thomas 	int fd;
131 3efd8e31 2022-10-23 thomas 
132 3efd8e31 2022-10-23 thomas 	*obj = got_repo_get_cached_object(repo, id);
133 3efd8e31 2022-10-23 thomas 	if (*obj != NULL) {
134 3efd8e31 2022-10-23 thomas 		(*obj)->refcnt++;
135 3efd8e31 2022-10-23 thomas 		return NULL;
136 3efd8e31 2022-10-23 thomas 	}
137 3efd8e31 2022-10-23 thomas 
138 3efd8e31 2022-10-23 thomas 	err = got_object_open_packed(obj, id, repo);
139 3efd8e31 2022-10-23 thomas 	if (err) {
140 3efd8e31 2022-10-23 thomas 		if (err->code != GOT_ERR_NO_OBJ)
141 3efd8e31 2022-10-23 thomas 			return err;
142 3efd8e31 2022-10-23 thomas 	} else
143 3efd8e31 2022-10-23 thomas 		return NULL;
144 3efd8e31 2022-10-23 thomas 
145 3efd8e31 2022-10-23 thomas 	err = got_object_open_loose_fd(&fd, id, repo);
146 3efd8e31 2022-10-23 thomas 	if (err) {
147 3efd8e31 2022-10-23 thomas 		if (err->code == GOT_ERR_ERRNO && errno == ENOENT)
148 3efd8e31 2022-10-23 thomas 			err = got_error_no_obj(id);
149 3efd8e31 2022-10-23 thomas 		return err;
150 3efd8e31 2022-10-23 thomas 	}
151 3efd8e31 2022-10-23 thomas 
152 3efd8e31 2022-10-23 thomas 	err = got_object_read_header(obj, fd);
153 3efd8e31 2022-10-23 thomas 	if (err)
154 3efd8e31 2022-10-23 thomas 		goto done;
155 3efd8e31 2022-10-23 thomas 
156 3efd8e31 2022-10-23 thomas 	memcpy(&(*obj)->id, id, sizeof((*obj)->id));
157 3efd8e31 2022-10-23 thomas 	(*obj)->refcnt++;
158 3efd8e31 2022-10-23 thomas 
159 3efd8e31 2022-10-23 thomas 	err = got_repo_cache_object(repo, id, *obj);
160 3efd8e31 2022-10-23 thomas 	if (err) {
161 3efd8e31 2022-10-23 thomas 		if (err->code == GOT_ERR_OBJ_EXISTS ||
162 3efd8e31 2022-10-23 thomas 		    err->code == GOT_ERR_OBJ_TOO_LARGE)
163 3efd8e31 2022-10-23 thomas 			err = NULL;
164 3efd8e31 2022-10-23 thomas 	}
165 3efd8e31 2022-10-23 thomas done:
166 3efd8e31 2022-10-23 thomas 	if (close(fd) == -1 && err == NULL)
167 3efd8e31 2022-10-23 thomas 		err = got_error_from_errno("close");
168 3efd8e31 2022-10-23 thomas 	return err;
169 3efd8e31 2022-10-23 thomas }
170 3efd8e31 2022-10-23 thomas 
171 3efd8e31 2022-10-23 thomas static const struct got_error *
172 3efd8e31 2022-10-23 thomas wrap_fd(FILE **f, int wrapped_fd)
173 3efd8e31 2022-10-23 thomas {
174 3efd8e31 2022-10-23 thomas 	const struct got_error *err = NULL;
175 3efd8e31 2022-10-23 thomas 	int fd;
176 3efd8e31 2022-10-23 thomas 
177 3efd8e31 2022-10-23 thomas 	if (ftruncate(wrapped_fd, 0L) == -1)
178 3efd8e31 2022-10-23 thomas 		return got_error_from_errno("ftruncate");
179 3efd8e31 2022-10-23 thomas 
180 3efd8e31 2022-10-23 thomas 	if (lseek(wrapped_fd, 0L, SEEK_SET) == -1)
181 3efd8e31 2022-10-23 thomas 		return got_error_from_errno("lseek");
182 3efd8e31 2022-10-23 thomas 
183 3efd8e31 2022-10-23 thomas 	fd = dup(wrapped_fd);
184 3efd8e31 2022-10-23 thomas 	if (fd == -1)
185 3efd8e31 2022-10-23 thomas 		return got_error_from_errno("dup");
186 3efd8e31 2022-10-23 thomas 
187 3efd8e31 2022-10-23 thomas 	*f = fdopen(fd, "w+");
188 3efd8e31 2022-10-23 thomas 	if (*f == NULL) {
189 3efd8e31 2022-10-23 thomas 		err = got_error_from_errno("fdopen");
190 3efd8e31 2022-10-23 thomas 		close(fd);
191 3efd8e31 2022-10-23 thomas 	}
192 3efd8e31 2022-10-23 thomas 	return err;
193 3efd8e31 2022-10-23 thomas }
194 3efd8e31 2022-10-23 thomas 
195 3efd8e31 2022-10-23 thomas static const struct got_error *
196 3efd8e31 2022-10-23 thomas read_packed_object_raw(uint8_t **outbuf, off_t *size, size_t *hdrlen,
197 3efd8e31 2022-10-23 thomas     int outfd, struct got_pack *pack, struct got_packidx *packidx, int idx,
198 3efd8e31 2022-10-23 thomas     struct got_object_id *id)
199 3efd8e31 2022-10-23 thomas {
200 3efd8e31 2022-10-23 thomas 	const struct got_error *err = NULL;
201 3efd8e31 2022-10-23 thomas 	uint64_t raw_size = 0;
202 3efd8e31 2022-10-23 thomas 	struct got_object *obj;
203 3efd8e31 2022-10-23 thomas 	FILE *outfile = NULL, *basefile = NULL, *accumfile = NULL;
204 3efd8e31 2022-10-23 thomas 
205 3efd8e31 2022-10-23 thomas 	*outbuf = NULL;
206 3efd8e31 2022-10-23 thomas 	*size = 0;
207 3efd8e31 2022-10-23 thomas 	*hdrlen = 0;
208 3efd8e31 2022-10-23 thomas 
209 3efd8e31 2022-10-23 thomas 	err = got_packfile_open_object(&obj, pack, packidx, idx, id);
210 3efd8e31 2022-10-23 thomas 	if (err)
211 3efd8e31 2022-10-23 thomas 		return err;
212 3efd8e31 2022-10-23 thomas 
213 3efd8e31 2022-10-23 thomas 	if (obj->flags & GOT_OBJ_FLAG_DELTIFIED) {
214 3efd8e31 2022-10-23 thomas 		err = got_pack_get_max_delta_object_size(&raw_size, obj, pack);
215 3efd8e31 2022-10-23 thomas 		if (err)
216 3efd8e31 2022-10-23 thomas 			goto done;
217 3efd8e31 2022-10-23 thomas 	} else
218 3efd8e31 2022-10-23 thomas 		raw_size = obj->size;
219 3efd8e31 2022-10-23 thomas 
220 3efd8e31 2022-10-23 thomas 	if (raw_size <= GOT_DELTA_RESULT_SIZE_CACHED_MAX) {
221 3efd8e31 2022-10-23 thomas 		size_t len;
222 3efd8e31 2022-10-23 thomas 		err = got_packfile_extract_object_to_mem(outbuf, &len,
223 3efd8e31 2022-10-23 thomas 		    obj, pack);
224 3efd8e31 2022-10-23 thomas 		if (err)
225 3efd8e31 2022-10-23 thomas 			goto done;
226 3efd8e31 2022-10-23 thomas 		*size = (off_t)len;
227 3efd8e31 2022-10-23 thomas 	} else {
228 3efd8e31 2022-10-23 thomas 		/*
229 3efd8e31 2022-10-23 thomas 		 * XXX This uses 3 file extra descriptors for no good reason.
230 3efd8e31 2022-10-23 thomas 		 * We should have got_packfile_extract_object_to_fd().
231 3efd8e31 2022-10-23 thomas 		 */
232 3efd8e31 2022-10-23 thomas 		err = wrap_fd(&outfile, outfd);
233 3efd8e31 2022-10-23 thomas 		if (err)
234 3efd8e31 2022-10-23 thomas 			goto done;
235 3efd8e31 2022-10-23 thomas 		err = wrap_fd(&basefile, pack->basefd);
236 3efd8e31 2022-10-23 thomas 		if (err)
237 3efd8e31 2022-10-23 thomas 			goto done;
238 3efd8e31 2022-10-23 thomas 		err = wrap_fd(&accumfile, pack->accumfd);
239 3efd8e31 2022-10-23 thomas 		if (err)
240 3efd8e31 2022-10-23 thomas 			goto done;
241 3efd8e31 2022-10-23 thomas 		err = got_packfile_extract_object(pack, obj, outfile, basefile,
242 3efd8e31 2022-10-23 thomas 		    accumfile);
243 3efd8e31 2022-10-23 thomas 		if (err)
244 3efd8e31 2022-10-23 thomas 			goto done;
245 b296ac1c 2023-01-09 thomas 		*size = obj->size;
246 3efd8e31 2022-10-23 thomas 	}
247 3efd8e31 2022-10-23 thomas 
248 3efd8e31 2022-10-23 thomas 	*hdrlen = obj->hdrlen;
249 3efd8e31 2022-10-23 thomas done:
250 3efd8e31 2022-10-23 thomas 	got_object_close(obj);
251 3efd8e31 2022-10-23 thomas 	if (outfile && fclose(outfile) == EOF && err == NULL)
252 3efd8e31 2022-10-23 thomas 		err = got_error_from_errno("fclose");
253 3efd8e31 2022-10-23 thomas 	if (basefile && fclose(basefile) == EOF && err == NULL)
254 3efd8e31 2022-10-23 thomas 		err = got_error_from_errno("fclose");
255 3efd8e31 2022-10-23 thomas 	if (accumfile && fclose(accumfile) == EOF && err == NULL)
256 3efd8e31 2022-10-23 thomas 		err = got_error_from_errno("fclose");
257 3efd8e31 2022-10-23 thomas 	return err;
258 3efd8e31 2022-10-23 thomas 
259 3efd8e31 2022-10-23 thomas }
260 3efd8e31 2022-10-23 thomas 
261 3efd8e31 2022-10-23 thomas static void
262 3efd8e31 2022-10-23 thomas put_raw_object_tempfile(struct got_raw_object *obj)
263 3efd8e31 2022-10-23 thomas {
264 3efd8e31 2022-10-23 thomas 	struct got_repository *repo = obj->close_arg;
265 3efd8e31 2022-10-23 thomas 
266 3efd8e31 2022-10-23 thomas 	if (obj->tempfile_idx != -1)
267 3efd8e31 2022-10-23 thomas 		got_repo_temp_fds_put(obj->tempfile_idx, repo);
268 3efd8e31 2022-10-23 thomas }
269 3efd8e31 2022-10-23 thomas 
270 3efd8e31 2022-10-23 thomas /* *outfd must be initialized to -1 by caller */
271 3efd8e31 2022-10-23 thomas const struct got_error *
272 3efd8e31 2022-10-23 thomas got_object_raw_open(struct got_raw_object **obj, int *outfd,
273 3efd8e31 2022-10-23 thomas     struct got_repository *repo, struct got_object_id *id)
274 3efd8e31 2022-10-23 thomas {
275 3efd8e31 2022-10-23 thomas 	const struct got_error *err = NULL;
276 3efd8e31 2022-10-23 thomas 	struct got_packidx *packidx = NULL;
277 ab9f7b87 2023-01-09 thomas 	int idx, tempfd, tempfile_idx;
278 3efd8e31 2022-10-23 thomas 	uint8_t *outbuf = NULL;
279 3efd8e31 2022-10-23 thomas 	off_t size = 0;
280 3efd8e31 2022-10-23 thomas 	size_t hdrlen = 0;
281 3efd8e31 2022-10-23 thomas 	char *path_packfile = NULL;
282 3efd8e31 2022-10-23 thomas 
283 3efd8e31 2022-10-23 thomas 	*obj = got_repo_get_cached_raw_object(repo, id);
284 3efd8e31 2022-10-23 thomas 	if (*obj != NULL) {
285 3efd8e31 2022-10-23 thomas 		(*obj)->refcnt++;
286 3efd8e31 2022-10-23 thomas 		return NULL;
287 3efd8e31 2022-10-23 thomas 	}
288 3efd8e31 2022-10-23 thomas 
289 ab9f7b87 2023-01-09 thomas 	err = got_repo_temp_fds_get(&tempfd, &tempfile_idx, repo);
290 ab9f7b87 2023-01-09 thomas 	if (err)
291 ab9f7b87 2023-01-09 thomas 		return err;
292 3efd8e31 2022-10-23 thomas 
293 3efd8e31 2022-10-23 thomas 	err = got_repo_search_packidx(&packidx, &idx, repo, id);
294 3efd8e31 2022-10-23 thomas 	if (err == NULL) {
295 3efd8e31 2022-10-23 thomas 		struct got_pack *pack = NULL;
296 3efd8e31 2022-10-23 thomas 
297 3efd8e31 2022-10-23 thomas 		err = got_packidx_get_packfile_path(&path_packfile,
298 3efd8e31 2022-10-23 thomas 		    packidx->path_packidx);
299 3efd8e31 2022-10-23 thomas 		if (err)
300 3efd8e31 2022-10-23 thomas 			goto done;
301 3efd8e31 2022-10-23 thomas 
302 3efd8e31 2022-10-23 thomas 		pack = got_repo_get_cached_pack(repo, path_packfile);
303 3efd8e31 2022-10-23 thomas 		if (pack == NULL) {
304 3efd8e31 2022-10-23 thomas 			err = got_repo_cache_pack(&pack, repo, path_packfile,
305 3efd8e31 2022-10-23 thomas 			    packidx);
306 3efd8e31 2022-10-23 thomas 			if (err)
307 3efd8e31 2022-10-23 thomas 				goto done;
308 3efd8e31 2022-10-23 thomas 		}
309 3efd8e31 2022-10-23 thomas 		err = read_packed_object_raw(&outbuf, &size, &hdrlen,
310 ab9f7b87 2023-01-09 thomas 		    tempfd, pack, packidx, idx, id);
311 3efd8e31 2022-10-23 thomas 		if (err)
312 3efd8e31 2022-10-23 thomas 			goto done;
313 3efd8e31 2022-10-23 thomas 	} else if (err->code == GOT_ERR_NO_OBJ) {
314 3efd8e31 2022-10-23 thomas 		int fd;
315 3efd8e31 2022-10-23 thomas 
316 3efd8e31 2022-10-23 thomas 		err = got_object_open_loose_fd(&fd, id, repo);
317 3efd8e31 2022-10-23 thomas 		if (err)
318 3efd8e31 2022-10-23 thomas 			goto done;
319 3efd8e31 2022-10-23 thomas 		err = got_object_read_raw(&outbuf, &size, &hdrlen,
320 ab9f7b87 2023-01-09 thomas 		    GOT_DELTA_RESULT_SIZE_CACHED_MAX, tempfd, id, fd);
321 3efd8e31 2022-10-23 thomas 		if (close(fd) == -1 && err == NULL)
322 3efd8e31 2022-10-23 thomas 			err = got_error_from_errno("close");
323 3efd8e31 2022-10-23 thomas 		if (err)
324 ab9f7b87 2023-01-09 thomas 			goto done;
325 ab9f7b87 2023-01-09 thomas 	}
326 ab9f7b87 2023-01-09 thomas 
327 ab9f7b87 2023-01-09 thomas 	if (outbuf == NULL) {
328 ab9f7b87 2023-01-09 thomas 		if (*outfd != -1) {
329 ab9f7b87 2023-01-09 thomas 			err = got_error_msg(GOT_ERR_NOT_IMPL, "bad outfd");
330 ab9f7b87 2023-01-09 thomas 			goto done;
331 ab9f7b87 2023-01-09 thomas 		}
332 ab9f7b87 2023-01-09 thomas 
333 ab9f7b87 2023-01-09 thomas 		/*
334 ab9f7b87 2023-01-09 thomas 		 * Duplicate tempfile descriptor to allow use of
335 ab9f7b87 2023-01-09 thomas 		 * fdopen(3) inside got_object_raw_alloc().
336 ab9f7b87 2023-01-09 thomas 		 */
337 ab9f7b87 2023-01-09 thomas 		*outfd = dup(tempfd);
338 ab9f7b87 2023-01-09 thomas 		if (*outfd == -1) {
339 ab9f7b87 2023-01-09 thomas 			err = got_error_from_errno("dup");
340 3efd8e31 2022-10-23 thomas 			goto done;
341 ab9f7b87 2023-01-09 thomas 		}
342 3efd8e31 2022-10-23 thomas 	}
343 3efd8e31 2022-10-23 thomas 
344 ebe6ec92 2023-01-09 thomas 	err = got_object_raw_alloc(obj, outbuf, outfd,
345 ebe6ec92 2023-01-09 thomas 	    GOT_DELTA_RESULT_SIZE_CACHED_MAX, hdrlen, size);
346 3efd8e31 2022-10-23 thomas 	if (err)
347 3efd8e31 2022-10-23 thomas 		goto done;
348 3efd8e31 2022-10-23 thomas 
349 3efd8e31 2022-10-23 thomas 	err = got_repo_cache_raw_object(repo, id, *obj);
350 3efd8e31 2022-10-23 thomas 	if (err) {
351 3efd8e31 2022-10-23 thomas 		if (err->code == GOT_ERR_OBJ_EXISTS ||
352 3efd8e31 2022-10-23 thomas 		    err->code == GOT_ERR_OBJ_TOO_LARGE)
353 3efd8e31 2022-10-23 thomas 			err = NULL;
354 3efd8e31 2022-10-23 thomas 	}
355 3efd8e31 2022-10-23 thomas done:
356 3efd8e31 2022-10-23 thomas 	free(path_packfile);
357 3efd8e31 2022-10-23 thomas 	if (err) {
358 3efd8e31 2022-10-23 thomas 		if (*obj) {
359 3efd8e31 2022-10-23 thomas 			got_object_raw_close(*obj);
360 3efd8e31 2022-10-23 thomas 			*obj = NULL;
361 3efd8e31 2022-10-23 thomas 		}
362 3efd8e31 2022-10-23 thomas 		free(outbuf);
363 ab9f7b87 2023-01-09 thomas 		got_repo_temp_fds_put(tempfile_idx, repo);
364 ab9f7b87 2023-01-09 thomas 		if (*outfd != -1) {
365 ab9f7b87 2023-01-09 thomas 			close(*outfd);
366 ab9f7b87 2023-01-09 thomas 			*outfd = -1;
367 ab9f7b87 2023-01-09 thomas 		}
368 3efd8e31 2022-10-23 thomas 	} else {
369 ab9f7b87 2023-01-09 thomas 		if (((*obj)->f == NULL && (*obj)->fd == -1)) {
370 ab9f7b87 2023-01-09 thomas 			/* This raw object is not backed by a file. */
371 ab9f7b87 2023-01-09 thomas 			got_repo_temp_fds_put(tempfile_idx, repo);
372 ab9f7b87 2023-01-09 thomas 			if (*outfd != -1) {
373 ab9f7b87 2023-01-09 thomas 				close(*outfd);
374 ab9f7b87 2023-01-09 thomas 				*outfd = -1;
375 ab9f7b87 2023-01-09 thomas 			}
376 ab9f7b87 2023-01-09 thomas 		} else {
377 ab9f7b87 2023-01-09 thomas 			(*obj)->tempfile_idx = tempfile_idx;
378 ab9f7b87 2023-01-09 thomas 			(*obj)->close_cb = put_raw_object_tempfile;
379 ab9f7b87 2023-01-09 thomas 			(*obj)->close_arg = repo;
380 ab9f7b87 2023-01-09 thomas 		}
381 3efd8e31 2022-10-23 thomas 	}
382 3efd8e31 2022-10-23 thomas 	return err;
383 3efd8e31 2022-10-23 thomas }
384 3efd8e31 2022-10-23 thomas 
385 3efd8e31 2022-10-23 thomas static const struct got_error *
386 3efd8e31 2022-10-23 thomas open_commit(struct got_commit_object **commit,
387 3efd8e31 2022-10-23 thomas     struct got_repository *repo, struct got_object_id *id, int check_cache)
388 3efd8e31 2022-10-23 thomas {
389 3efd8e31 2022-10-23 thomas 	const struct got_error *err = NULL;
390 3efd8e31 2022-10-23 thomas 	struct got_packidx *packidx = NULL;
391 3efd8e31 2022-10-23 thomas 	int idx;
392 3efd8e31 2022-10-23 thomas 	char *path_packfile = NULL;
393 3efd8e31 2022-10-23 thomas 
394 3efd8e31 2022-10-23 thomas 	if (check_cache) {
395 3efd8e31 2022-10-23 thomas 		*commit = got_repo_get_cached_commit(repo, id);
396 3efd8e31 2022-10-23 thomas 		if (*commit != NULL) {
397 3efd8e31 2022-10-23 thomas 			(*commit)->refcnt++;
398 3efd8e31 2022-10-23 thomas 			return NULL;
399 3efd8e31 2022-10-23 thomas 		}
400 3efd8e31 2022-10-23 thomas 	} else
401 3efd8e31 2022-10-23 thomas 		*commit = NULL;
402 3efd8e31 2022-10-23 thomas 
403 3efd8e31 2022-10-23 thomas 	err = got_repo_search_packidx(&packidx, &idx, repo, id);
404 3efd8e31 2022-10-23 thomas 	if (err == NULL) {
405 3efd8e31 2022-10-23 thomas 		struct got_pack *pack = NULL;
406 3efd8e31 2022-10-23 thomas 		struct got_object *obj;
407 3efd8e31 2022-10-23 thomas 		uint8_t *buf;
408 3efd8e31 2022-10-23 thomas 		size_t len;
409 3efd8e31 2022-10-23 thomas 
410 3efd8e31 2022-10-23 thomas 		err = got_packidx_get_packfile_path(&path_packfile,
411 3efd8e31 2022-10-23 thomas 		    packidx->path_packidx);
412 3efd8e31 2022-10-23 thomas 		if (err)
413 3efd8e31 2022-10-23 thomas 			return err;
414 3efd8e31 2022-10-23 thomas 
415 3efd8e31 2022-10-23 thomas 		pack = got_repo_get_cached_pack(repo, path_packfile);
416 3efd8e31 2022-10-23 thomas 		if (pack == NULL) {
417 3efd8e31 2022-10-23 thomas 			err = got_repo_cache_pack(&pack, repo, path_packfile,
418 3efd8e31 2022-10-23 thomas 			    packidx);
419 3efd8e31 2022-10-23 thomas 			if (err)
420 3efd8e31 2022-10-23 thomas 				goto done;
421 3efd8e31 2022-10-23 thomas 		}
422 3efd8e31 2022-10-23 thomas 		err = got_packfile_open_object(&obj, pack, packidx, idx, id);
423 3efd8e31 2022-10-23 thomas 		if (err)
424 3efd8e31 2022-10-23 thomas 			goto done;
425 3efd8e31 2022-10-23 thomas 		err = got_packfile_extract_object_to_mem(&buf, &len,
426 3efd8e31 2022-10-23 thomas 		    obj, pack);
427 3efd8e31 2022-10-23 thomas 		got_object_close(obj);
428 3efd8e31 2022-10-23 thomas 		if (err)
429 3efd8e31 2022-10-23 thomas 			goto done;
430 3efd8e31 2022-10-23 thomas 		err = got_object_parse_commit(commit, buf, len);
431 3efd8e31 2022-10-23 thomas 		free(buf);
432 3efd8e31 2022-10-23 thomas 	} else if (err->code == GOT_ERR_NO_OBJ) {
433 3efd8e31 2022-10-23 thomas 		int fd;
434 3efd8e31 2022-10-23 thomas 
435 3efd8e31 2022-10-23 thomas 		err = got_object_open_loose_fd(&fd, id, repo);
436 3efd8e31 2022-10-23 thomas 		if (err)
437 3efd8e31 2022-10-23 thomas 			return err;
438 3efd8e31 2022-10-23 thomas 		err = got_object_read_commit(commit, fd, id, 0);
439 3efd8e31 2022-10-23 thomas 		if (close(fd) == -1 && err == NULL)
440 3efd8e31 2022-10-23 thomas 			err = got_error_from_errno("close");
441 3efd8e31 2022-10-23 thomas 		if (err)
442 3efd8e31 2022-10-23 thomas 			return err;
443 3efd8e31 2022-10-23 thomas 	}
444 3efd8e31 2022-10-23 thomas 
445 3efd8e31 2022-10-23 thomas 	if (err == NULL) {
446 3efd8e31 2022-10-23 thomas 		(*commit)->refcnt++;
447 3efd8e31 2022-10-23 thomas 		err = got_repo_cache_commit(repo, id, *commit);
448 3efd8e31 2022-10-23 thomas 		if (err) {
449 3efd8e31 2022-10-23 thomas 			if (err->code == GOT_ERR_OBJ_EXISTS ||
450 3efd8e31 2022-10-23 thomas 			    err->code == GOT_ERR_OBJ_TOO_LARGE)
451 3efd8e31 2022-10-23 thomas 				err = NULL;
452 3efd8e31 2022-10-23 thomas 		}
453 3efd8e31 2022-10-23 thomas 	}
454 3efd8e31 2022-10-23 thomas done:
455 3efd8e31 2022-10-23 thomas 	free(path_packfile);
456 3efd8e31 2022-10-23 thomas 	return err;
457 3efd8e31 2022-10-23 thomas }
458 3efd8e31 2022-10-23 thomas 
459 3efd8e31 2022-10-23 thomas const struct got_error *
460 3efd8e31 2022-10-23 thomas got_object_open_as_commit(struct got_commit_object **commit,
461 3efd8e31 2022-10-23 thomas     struct got_repository *repo, struct got_object_id *id)
462 3efd8e31 2022-10-23 thomas {
463 3efd8e31 2022-10-23 thomas 	*commit = got_repo_get_cached_commit(repo, id);
464 3efd8e31 2022-10-23 thomas 	if (*commit != NULL) {
465 3efd8e31 2022-10-23 thomas 		(*commit)->refcnt++;
466 3efd8e31 2022-10-23 thomas 		return NULL;
467 3efd8e31 2022-10-23 thomas 	}
468 3efd8e31 2022-10-23 thomas 
469 3efd8e31 2022-10-23 thomas 	return open_commit(commit, repo, id, 0);
470 3efd8e31 2022-10-23 thomas }
471 3efd8e31 2022-10-23 thomas 
472 3efd8e31 2022-10-23 thomas const struct got_error *
473 3efd8e31 2022-10-23 thomas got_object_commit_open(struct got_commit_object **commit,
474 3efd8e31 2022-10-23 thomas     struct got_repository *repo, struct got_object *obj)
475 3efd8e31 2022-10-23 thomas {
476 3efd8e31 2022-10-23 thomas 	return open_commit(commit, repo, got_object_get_id(obj), 1);
477 3efd8e31 2022-10-23 thomas }
478 3efd8e31 2022-10-23 thomas 
479 3efd8e31 2022-10-23 thomas static const struct got_error *
480 3efd8e31 2022-10-23 thomas open_tree(struct got_tree_object **tree,
481 3efd8e31 2022-10-23 thomas     struct got_repository *repo, struct got_object_id *id, int check_cache)
482 3efd8e31 2022-10-23 thomas {
483 3efd8e31 2022-10-23 thomas 	const struct got_error *err = NULL;
484 3efd8e31 2022-10-23 thomas 	struct got_packidx *packidx = NULL;
485 3efd8e31 2022-10-23 thomas 	int idx;
486 3efd8e31 2022-10-23 thomas 	char *path_packfile = NULL;
487 3efd8e31 2022-10-23 thomas 	struct got_parsed_tree_entry *entries = NULL;
488 3efd8e31 2022-10-23 thomas 	size_t nentries = 0, nentries_alloc = 0, i;
489 3efd8e31 2022-10-23 thomas 	uint8_t *buf = NULL;
490 3efd8e31 2022-10-23 thomas 
491 3efd8e31 2022-10-23 thomas 	if (check_cache) {
492 3efd8e31 2022-10-23 thomas 		*tree = got_repo_get_cached_tree(repo, id);
493 3efd8e31 2022-10-23 thomas 		if (*tree != NULL) {
494 3efd8e31 2022-10-23 thomas 			(*tree)->refcnt++;
495 3efd8e31 2022-10-23 thomas 			return NULL;
496 3efd8e31 2022-10-23 thomas 		}
497 3efd8e31 2022-10-23 thomas 	} else
498 3efd8e31 2022-10-23 thomas 		*tree = NULL;
499 3efd8e31 2022-10-23 thomas 
500 3efd8e31 2022-10-23 thomas 	err = got_repo_search_packidx(&packidx, &idx, repo, id);
501 3efd8e31 2022-10-23 thomas 	if (err == NULL) {
502 3efd8e31 2022-10-23 thomas 		struct got_pack *pack = NULL;
503 3efd8e31 2022-10-23 thomas 		struct got_object *obj;
504 3efd8e31 2022-10-23 thomas 		size_t len;
505 3efd8e31 2022-10-23 thomas 
506 3efd8e31 2022-10-23 thomas 		err = got_packidx_get_packfile_path(&path_packfile,
507 3efd8e31 2022-10-23 thomas 		    packidx->path_packidx);
508 3efd8e31 2022-10-23 thomas 		if (err)
509 3efd8e31 2022-10-23 thomas 			return err;
510 3efd8e31 2022-10-23 thomas 
511 3efd8e31 2022-10-23 thomas 		pack = got_repo_get_cached_pack(repo, path_packfile);
512 3efd8e31 2022-10-23 thomas 		if (pack == NULL) {
513 3efd8e31 2022-10-23 thomas 			err = got_repo_cache_pack(&pack, repo, path_packfile,
514 3efd8e31 2022-10-23 thomas 			    packidx);
515 3efd8e31 2022-10-23 thomas 			if (err)
516 3efd8e31 2022-10-23 thomas 				goto done;
517 3efd8e31 2022-10-23 thomas 		}
518 3efd8e31 2022-10-23 thomas 		err = got_packfile_open_object(&obj, pack, packidx, idx, id);
519 3efd8e31 2022-10-23 thomas 		if (err)
520 3efd8e31 2022-10-23 thomas 			goto done;
521 3efd8e31 2022-10-23 thomas 		err = got_packfile_extract_object_to_mem(&buf, &len,
522 3efd8e31 2022-10-23 thomas 		    obj, pack);
523 3efd8e31 2022-10-23 thomas 		got_object_close(obj);
524 3efd8e31 2022-10-23 thomas 		if (err)
525 3efd8e31 2022-10-23 thomas 			goto done;
526 3efd8e31 2022-10-23 thomas 		err = got_object_parse_tree(&entries, &nentries,
527 3efd8e31 2022-10-23 thomas 		    &nentries_alloc, buf, len);
528 3efd8e31 2022-10-23 thomas 		if (err)
529 3efd8e31 2022-10-23 thomas 			goto done;
530 3efd8e31 2022-10-23 thomas 	} else if (err->code == GOT_ERR_NO_OBJ) {
531 3efd8e31 2022-10-23 thomas 		int fd;
532 3efd8e31 2022-10-23 thomas 
533 3efd8e31 2022-10-23 thomas 		err = got_object_open_loose_fd(&fd, id, repo);
534 3efd8e31 2022-10-23 thomas 		if (err)
535 3efd8e31 2022-10-23 thomas 			return err;
536 3efd8e31 2022-10-23 thomas 		err = got_object_read_tree(&entries, &nentries,
537 3efd8e31 2022-10-23 thomas 		    &nentries_alloc, &buf, fd, id);
538 3efd8e31 2022-10-23 thomas 		if (close(fd) == -1 && err == NULL)
539 3efd8e31 2022-10-23 thomas 			err = got_error_from_errno("close");
540 3efd8e31 2022-10-23 thomas 		if (err)
541 3efd8e31 2022-10-23 thomas 			goto done;
542 3efd8e31 2022-10-23 thomas 	} else
543 3efd8e31 2022-10-23 thomas 		goto done;
544 3efd8e31 2022-10-23 thomas 
545 3efd8e31 2022-10-23 thomas 	*tree = malloc(sizeof(**tree));
546 3efd8e31 2022-10-23 thomas 	if (*tree == NULL) {
547 3efd8e31 2022-10-23 thomas 		err = got_error_from_errno("malloc");
548 3efd8e31 2022-10-23 thomas 		goto done;
549 3efd8e31 2022-10-23 thomas 	}
550 3efd8e31 2022-10-23 thomas 	(*tree)->entries = calloc(nentries, sizeof(struct got_tree_entry));
551 3efd8e31 2022-10-23 thomas 	if ((*tree)->entries == NULL) {
552 3efd8e31 2022-10-23 thomas 		err = got_error_from_errno("malloc");
553 3efd8e31 2022-10-23 thomas 		goto done;
554 3efd8e31 2022-10-23 thomas 	}
555 3efd8e31 2022-10-23 thomas 	(*tree)->nentries = nentries;
556 3efd8e31 2022-10-23 thomas 	(*tree)->refcnt = 0;
557 3efd8e31 2022-10-23 thomas 
558 3efd8e31 2022-10-23 thomas 	for (i = 0; i < nentries; i++) {
559 3efd8e31 2022-10-23 thomas 		struct got_parsed_tree_entry *pe = &entries[i];
560 3efd8e31 2022-10-23 thomas 		struct got_tree_entry *te = &(*tree)->entries[i];
561 3efd8e31 2022-10-23 thomas 	
562 3efd8e31 2022-10-23 thomas 		if (strlcpy(te->name, pe->name,
563 3efd8e31 2022-10-23 thomas 		    sizeof(te->name)) >= sizeof(te->name)) {
564 3efd8e31 2022-10-23 thomas 			err = got_error(GOT_ERR_NO_SPACE);
565 3efd8e31 2022-10-23 thomas 			goto done;
566 3efd8e31 2022-10-23 thomas 		}
567 3efd8e31 2022-10-23 thomas 		memcpy(te->id.sha1, pe->id, SHA1_DIGEST_LENGTH);
568 3efd8e31 2022-10-23 thomas 		te->mode = pe->mode;
569 3efd8e31 2022-10-23 thomas 		te->idx = i;
570 3efd8e31 2022-10-23 thomas 	}
571 3efd8e31 2022-10-23 thomas done:
572 3efd8e31 2022-10-23 thomas 	free(path_packfile);
573 3efd8e31 2022-10-23 thomas 	free(entries);
574 3efd8e31 2022-10-23 thomas 	free(buf);
575 3efd8e31 2022-10-23 thomas 	if (err == NULL) {
576 3efd8e31 2022-10-23 thomas 		(*tree)->refcnt++;
577 3efd8e31 2022-10-23 thomas 		err = got_repo_cache_tree(repo, id, *tree);
578 3efd8e31 2022-10-23 thomas 		if (err) {
579 3efd8e31 2022-10-23 thomas 			if (err->code == GOT_ERR_OBJ_EXISTS ||
580 3efd8e31 2022-10-23 thomas 			    err->code == GOT_ERR_OBJ_TOO_LARGE)
581 3efd8e31 2022-10-23 thomas 				err = NULL;
582 3efd8e31 2022-10-23 thomas 		}
583 3efd8e31 2022-10-23 thomas 	}
584 3efd8e31 2022-10-23 thomas 	if (err) {
585 3efd8e31 2022-10-23 thomas 		if (*tree)
586 3efd8e31 2022-10-23 thomas 			free((*tree)->entries);
587 3efd8e31 2022-10-23 thomas 		free(*tree);
588 3efd8e31 2022-10-23 thomas 		*tree = NULL;
589 3efd8e31 2022-10-23 thomas 	}
590 3efd8e31 2022-10-23 thomas 	return err;
591 3efd8e31 2022-10-23 thomas }
592 3efd8e31 2022-10-23 thomas 
593 3efd8e31 2022-10-23 thomas const struct got_error *
594 3efd8e31 2022-10-23 thomas got_object_open_as_tree(struct got_tree_object **tree,
595 3efd8e31 2022-10-23 thomas     struct got_repository *repo, struct got_object_id *id)
596 3efd8e31 2022-10-23 thomas {
597 3efd8e31 2022-10-23 thomas 	*tree = got_repo_get_cached_tree(repo, id);
598 3efd8e31 2022-10-23 thomas 	if (*tree != NULL) {
599 3efd8e31 2022-10-23 thomas 		(*tree)->refcnt++;
600 3efd8e31 2022-10-23 thomas 		return NULL;
601 3efd8e31 2022-10-23 thomas 	}
602 3efd8e31 2022-10-23 thomas 
603 3efd8e31 2022-10-23 thomas 	return open_tree(tree, repo, id, 0);
604 3efd8e31 2022-10-23 thomas }
605 3efd8e31 2022-10-23 thomas 
606 3efd8e31 2022-10-23 thomas const struct got_error *
607 3efd8e31 2022-10-23 thomas got_object_tree_open(struct got_tree_object **tree,
608 3efd8e31 2022-10-23 thomas     struct got_repository *repo, struct got_object *obj)
609 3efd8e31 2022-10-23 thomas {
610 3efd8e31 2022-10-23 thomas 	return open_tree(tree, repo, got_object_get_id(obj), 1);
611 3efd8e31 2022-10-23 thomas }
612 db642191 2024-03-30 thomas 
613 db642191 2024-03-30 thomas static const struct got_error *
614 db642191 2024-03-30 thomas read_packed_blob(uint8_t **outbuf, size_t *size, size_t *hdrlen,
615 db642191 2024-03-30 thomas     int outfd, struct got_pack *pack, struct got_packidx *packidx, int idx,
616 db642191 2024-03-30 thomas     struct got_object_id *id, struct got_repository *repo)
617 db642191 2024-03-30 thomas {
618 db642191 2024-03-30 thomas 	const struct got_error *err = NULL;
619 db642191 2024-03-30 thomas 	struct got_object *obj;
620 db642191 2024-03-30 thomas 	FILE *outfile = NULL, *basefile = NULL, *accumfile = NULL;
621 db642191 2024-03-30 thomas 	uint64_t blob_size;
622 db642191 2024-03-30 thomas 
623 db642191 2024-03-30 thomas 	*hdrlen = 0;
624 db642191 2024-03-30 thomas 
625 db642191 2024-03-30 thomas 	err = got_object_open_from_packfile(&obj, id, pack, packidx, idx,
626 db642191 2024-03-30 thomas 	    repo);
627 db642191 2024-03-30 thomas 	if (err)
628 db642191 2024-03-30 thomas 		return err;
629 3efd8e31 2022-10-23 thomas 
630 db642191 2024-03-30 thomas 	if (obj->flags & GOT_OBJ_FLAG_DELTIFIED) {
631 db642191 2024-03-30 thomas 		err = got_pack_get_max_delta_object_size(&blob_size, obj,
632 db642191 2024-03-30 thomas 		    pack);
633 db642191 2024-03-30 thomas 		if (err)
634 db642191 2024-03-30 thomas 			goto done;
635 db642191 2024-03-30 thomas 	} else
636 db642191 2024-03-30 thomas 		blob_size = obj->size;
637 db642191 2024-03-30 thomas 
638 db642191 2024-03-30 thomas 	if (blob_size <= GOT_DELTA_RESULT_SIZE_CACHED_MAX) {
639 db642191 2024-03-30 thomas 		err = got_packfile_extract_object_to_mem(outbuf, size,
640 db642191 2024-03-30 thomas 		    obj, pack); 
641 db642191 2024-03-30 thomas 	} else {
642 db642191 2024-03-30 thomas 		/*
643 db642191 2024-03-30 thomas 		 * XXX This uses 3 file extra descriptors for no good reason.
644 db642191 2024-03-30 thomas 		 * We should have got_packfile_extract_object_to_fd().
645 db642191 2024-03-30 thomas 		 */
646 db642191 2024-03-30 thomas 		err = wrap_fd(&outfile, outfd);
647 db642191 2024-03-30 thomas 		if (err)
648 db642191 2024-03-30 thomas 			goto done;
649 db642191 2024-03-30 thomas 		err = wrap_fd(&basefile, pack->basefd);
650 db642191 2024-03-30 thomas 		if (err)
651 db642191 2024-03-30 thomas 			goto done;
652 db642191 2024-03-30 thomas 		err = wrap_fd(&accumfile, pack->accumfd);
653 db642191 2024-03-30 thomas 		if (err)
654 db642191 2024-03-30 thomas 			goto done;
655 db642191 2024-03-30 thomas 		err = got_packfile_extract_object(pack, obj, outfile, basefile,
656 db642191 2024-03-30 thomas 		    accumfile);
657 db642191 2024-03-30 thomas 		if (err)
658 db642191 2024-03-30 thomas 			goto done;
659 db642191 2024-03-30 thomas 		*size = obj->size;
660 db642191 2024-03-30 thomas 	}
661 db642191 2024-03-30 thomas 
662 db642191 2024-03-30 thomas 	/* XXX verify checksum? */
663 db642191 2024-03-30 thomas done:
664 db642191 2024-03-30 thomas 	got_object_close(obj);
665 db642191 2024-03-30 thomas 	if (outfile && fclose(outfile) == EOF && err == NULL)
666 db642191 2024-03-30 thomas 		err = got_error_from_errno("fclose");
667 db642191 2024-03-30 thomas 	if (basefile && fclose(basefile) == EOF && err == NULL)
668 db642191 2024-03-30 thomas 		err = got_error_from_errno("fclose");
669 db642191 2024-03-30 thomas 	if (accumfile && fclose(accumfile) == EOF && err == NULL)
670 db642191 2024-03-30 thomas 		err = got_error_from_errno("fclose");
671 db642191 2024-03-30 thomas 	return err;
672 db642191 2024-03-30 thomas }
673 db642191 2024-03-30 thomas 
674 db642191 2024-03-30 thomas static const struct got_error *
675 db642191 2024-03-30 thomas read_blob(uint8_t **outbuf, size_t *size, size_t *hdrlen, int outfd, int infd,
676 db642191 2024-03-30 thomas     struct got_object_id *id, struct got_repository *repo)
677 db642191 2024-03-30 thomas {
678 db642191 2024-03-30 thomas 	const struct got_error *err = NULL;
679 db642191 2024-03-30 thomas 	struct got_object *obj = NULL;
680 db642191 2024-03-30 thomas 	FILE *f = NULL;
681 db642191 2024-03-30 thomas 	struct got_object_id expected_id;
682 db642191 2024-03-30 thomas 	struct got_inflate_checksum csum;
683 db642191 2024-03-30 thomas 	struct got_hash ctx;
684 db642191 2024-03-30 thomas 
685 db642191 2024-03-30 thomas 	got_hash_init(&ctx, GOT_HASH_SHA1);
686 db642191 2024-03-30 thomas 	memset(&csum, 0, sizeof(csum));
687 db642191 2024-03-30 thomas 	csum.output_ctx = &ctx;
688 db642191 2024-03-30 thomas 
689 db642191 2024-03-30 thomas 	memcpy(&expected_id, id, sizeof(expected_id));
690 db642191 2024-03-30 thomas 
691 db642191 2024-03-30 thomas 	err = got_object_read_header(&obj, infd);
692 db642191 2024-03-30 thomas 	if (err)
693 db642191 2024-03-30 thomas 		goto done;
694 db642191 2024-03-30 thomas 
695 db642191 2024-03-30 thomas 	if (lseek(infd, SEEK_SET, 0) == -1) {
696 db642191 2024-03-30 thomas 		err = got_error_from_errno("lseek");
697 db642191 2024-03-30 thomas 		goto done;
698 db642191 2024-03-30 thomas 	}
699 db642191 2024-03-30 thomas 
700 db642191 2024-03-30 thomas 	f = fdopen(infd, "rb");
701 db642191 2024-03-30 thomas 	if (f == NULL) {
702 db642191 2024-03-30 thomas 		err = got_error_from_errno("fdopen");
703 db642191 2024-03-30 thomas 		goto done;
704 db642191 2024-03-30 thomas 	}
705 db642191 2024-03-30 thomas 	infd = -1;
706 db642191 2024-03-30 thomas 
707 db642191 2024-03-30 thomas 	if (obj->size + obj->hdrlen <= GOT_DELTA_RESULT_SIZE_CACHED_MAX) {
708 db642191 2024-03-30 thomas 		err = got_inflate_to_mem(outbuf, size, NULL, &csum, f);
709 db642191 2024-03-30 thomas 		if (err)
710 db642191 2024-03-30 thomas 			goto done;
711 db642191 2024-03-30 thomas 	} else {
712 db642191 2024-03-30 thomas 		err = got_inflate_to_fd(size, f, &csum, outfd);
713 db642191 2024-03-30 thomas 		if (err)
714 db642191 2024-03-30 thomas 			goto done;
715 db642191 2024-03-30 thomas 	}
716 db642191 2024-03-30 thomas 
717 db642191 2024-03-30 thomas 	if (*size < obj->hdrlen) {
718 db642191 2024-03-30 thomas 		err = got_error(GOT_ERR_BAD_OBJ_HDR);
719 db642191 2024-03-30 thomas 		goto done;
720 db642191 2024-03-30 thomas 	}
721 db642191 2024-03-30 thomas 
722 db642191 2024-03-30 thomas 	*hdrlen = obj->hdrlen;
723 db642191 2024-03-30 thomas 
724 db642191 2024-03-30 thomas 	got_hash_final_object_id(&ctx, id);
725 db642191 2024-03-30 thomas 	if (got_object_id_cmp(&expected_id, id) != 0) {
726 db642191 2024-03-30 thomas 		err = got_error_checksum(&expected_id);
727 db642191 2024-03-30 thomas 		goto done;
728 db642191 2024-03-30 thomas 	}
729 db642191 2024-03-30 thomas done:
730 db642191 2024-03-30 thomas 	if (f && fclose(f) == EOF && err == NULL)
731 db642191 2024-03-30 thomas 		err = got_error_from_errno("fclose");
732 db642191 2024-03-30 thomas 	if (infd != -1 && close(infd) == -1 && err == NULL)
733 db642191 2024-03-30 thomas 		err = got_error_from_errno("close");
734 db642191 2024-03-30 thomas 
735 db642191 2024-03-30 thomas 	return err;
736 db642191 2024-03-30 thomas }
737 db642191 2024-03-30 thomas 
738 db642191 2024-03-30 thomas static const struct got_error *
739 db642191 2024-03-30 thomas open_blob(struct got_blob_object **blob, struct got_repository *repo,
740 db642191 2024-03-30 thomas     struct got_object_id *id, size_t blocksize, int outfd)
741 db642191 2024-03-30 thomas {
742 db642191 2024-03-30 thomas 	const struct got_error *err = NULL;
743 db642191 2024-03-30 thomas 	struct got_packidx *packidx = NULL;
744 db642191 2024-03-30 thomas 	int idx, dfd = -1;
745 db642191 2024-03-30 thomas 	char *path_packfile = NULL;
746 db642191 2024-03-30 thomas 	uint8_t *outbuf;
747 db642191 2024-03-30 thomas 	size_t size, hdrlen;
748 db642191 2024-03-30 thomas 	struct stat sb;
749 db642191 2024-03-30 thomas 
750 db642191 2024-03-30 thomas 	*blob = calloc(1, sizeof(**blob));
751 db642191 2024-03-30 thomas 	if (*blob == NULL)
752 db642191 2024-03-30 thomas 		return got_error_from_errno("calloc");
753 db642191 2024-03-30 thomas 
754 db642191 2024-03-30 thomas 	(*blob)->read_buf = malloc(blocksize);
755 db642191 2024-03-30 thomas 	if ((*blob)->read_buf == NULL) {
756 db642191 2024-03-30 thomas 		err = got_error_from_errno("malloc");
757 db642191 2024-03-30 thomas 		goto done;
758 db642191 2024-03-30 thomas 	}
759 db642191 2024-03-30 thomas 
760 db642191 2024-03-30 thomas 	if (ftruncate(outfd, 0L) == -1) {
761 db642191 2024-03-30 thomas 		err = got_error_from_errno("ftruncate");
762 db642191 2024-03-30 thomas 		goto done;
763 db642191 2024-03-30 thomas 	}
764 db642191 2024-03-30 thomas 	if (lseek(outfd, SEEK_SET, 0) == -1) {
765 db642191 2024-03-30 thomas 		err = got_error_from_errno("lseek");
766 db642191 2024-03-30 thomas 		goto done;
767 db642191 2024-03-30 thomas 	}
768 db642191 2024-03-30 thomas 
769 db642191 2024-03-30 thomas 	err = got_repo_search_packidx(&packidx, &idx, repo, id);
770 db642191 2024-03-30 thomas 	if (err == NULL) {
771 db642191 2024-03-30 thomas 		struct got_pack *pack = NULL;
772 db642191 2024-03-30 thomas 
773 db642191 2024-03-30 thomas 		err = got_packidx_get_packfile_path(&path_packfile,
774 db642191 2024-03-30 thomas 		    packidx->path_packidx);
775 db642191 2024-03-30 thomas 		if (err)
776 db642191 2024-03-30 thomas 			goto done;
777 db642191 2024-03-30 thomas 
778 db642191 2024-03-30 thomas 		pack = got_repo_get_cached_pack(repo, path_packfile);
779 db642191 2024-03-30 thomas 		if (pack == NULL) {
780 db642191 2024-03-30 thomas 			err = got_repo_cache_pack(&pack, repo, path_packfile,
781 db642191 2024-03-30 thomas 			    packidx);
782 db642191 2024-03-30 thomas 			if (err)
783 db642191 2024-03-30 thomas 				goto done;
784 db642191 2024-03-30 thomas 		}
785 db642191 2024-03-30 thomas 		err = read_packed_blob(&outbuf, &size, &hdrlen, outfd,
786 db642191 2024-03-30 thomas 		    pack, packidx, idx, id, repo);
787 db642191 2024-03-30 thomas 	} else if (err->code == GOT_ERR_NO_OBJ) {
788 db642191 2024-03-30 thomas 		int infd;
789 db642191 2024-03-30 thomas 
790 db642191 2024-03-30 thomas 		err = got_object_open_loose_fd(&infd, id, repo);
791 db642191 2024-03-30 thomas 		if (err)
792 db642191 2024-03-30 thomas 			goto done;
793 db642191 2024-03-30 thomas 		err = read_blob(&outbuf, &size, &hdrlen, outfd, infd,
794 db642191 2024-03-30 thomas 		    id, repo);
795 db642191 2024-03-30 thomas 	}
796 db642191 2024-03-30 thomas 	if (err)
797 db642191 2024-03-30 thomas 		goto done;
798 db642191 2024-03-30 thomas 
799 db642191 2024-03-30 thomas 	if (hdrlen > size) {
800 db642191 2024-03-30 thomas 		err = got_error(GOT_ERR_BAD_OBJ_HDR);
801 db642191 2024-03-30 thomas 		goto done;
802 db642191 2024-03-30 thomas 	}
803 db642191 2024-03-30 thomas 
804 db642191 2024-03-30 thomas 	if (outbuf) {
805 db642191 2024-03-30 thomas 		(*blob)->f = fmemopen(outbuf, size, "rb");
806 db642191 2024-03-30 thomas 		if ((*blob)->f == NULL) {
807 db642191 2024-03-30 thomas 			err = got_error_from_errno("fmemopen");
808 db642191 2024-03-30 thomas 			free(outbuf);
809 db642191 2024-03-30 thomas 			goto done;
810 db642191 2024-03-30 thomas 		}
811 db642191 2024-03-30 thomas 		(*blob)->data = outbuf;
812 db642191 2024-03-30 thomas 	} else {
813 db642191 2024-03-30 thomas 		if (fstat(outfd, &sb) == -1) {
814 db642191 2024-03-30 thomas 			err = got_error_from_errno("fstat");
815 db642191 2024-03-30 thomas 			goto done;
816 db642191 2024-03-30 thomas 		}
817 db642191 2024-03-30 thomas 
818 db642191 2024-03-30 thomas 		if (sb.st_size != size) {
819 db642191 2024-03-30 thomas 			err = got_error(GOT_ERR_PRIVSEP_LEN);
820 db642191 2024-03-30 thomas 			goto done;
821 db642191 2024-03-30 thomas 		}
822 db642191 2024-03-30 thomas 
823 db642191 2024-03-30 thomas 		dfd = dup(outfd);
824 db642191 2024-03-30 thomas 		if (dfd == -1) {
825 db642191 2024-03-30 thomas 			err = got_error_from_errno("dup");
826 db642191 2024-03-30 thomas 			goto done;
827 db642191 2024-03-30 thomas 		}
828 db642191 2024-03-30 thomas 
829 db642191 2024-03-30 thomas 		(*blob)->f = fdopen(dfd, "rb");
830 db642191 2024-03-30 thomas 		if ((*blob)->f == NULL) {
831 db642191 2024-03-30 thomas 			err = got_error_from_errno("fdopen");
832 db642191 2024-03-30 thomas 			close(dfd);
833 db642191 2024-03-30 thomas 			dfd = -1;
834 db642191 2024-03-30 thomas 			goto done;
835 db642191 2024-03-30 thomas 		}
836 db642191 2024-03-30 thomas 	}
837 db642191 2024-03-30 thomas 
838 db642191 2024-03-30 thomas 	(*blob)->hdrlen = hdrlen;
839 db642191 2024-03-30 thomas 	(*blob)->blocksize = blocksize;
840 db642191 2024-03-30 thomas 	memcpy(&(*blob)->id, id, sizeof(*id));
841 db642191 2024-03-30 thomas 
842 db642191 2024-03-30 thomas done:
843 db642191 2024-03-30 thomas 	free(path_packfile);
844 db642191 2024-03-30 thomas 	if (err) {
845 db642191 2024-03-30 thomas 		if (*blob) {
846 db642191 2024-03-30 thomas 			got_object_blob_close(*blob);
847 db642191 2024-03-30 thomas 			*blob = NULL;
848 db642191 2024-03-30 thomas 		}
849 db642191 2024-03-30 thomas 	}
850 db642191 2024-03-30 thomas 	return err;
851 db642191 2024-03-30 thomas }
852 db642191 2024-03-30 thomas 
853 3efd8e31 2022-10-23 thomas const struct got_error *
854 3efd8e31 2022-10-23 thomas got_object_open_as_blob(struct got_blob_object **blob,
855 3efd8e31 2022-10-23 thomas     struct got_repository *repo, struct got_object_id *id, size_t blocksize,
856 3efd8e31 2022-10-23 thomas     int outfd)
857 3efd8e31 2022-10-23 thomas {
858 db642191 2024-03-30 thomas 	return open_blob(blob, repo, id, blocksize, outfd);
859 3efd8e31 2022-10-23 thomas }
860 3efd8e31 2022-10-23 thomas 
861 3efd8e31 2022-10-23 thomas const struct got_error *
862 3efd8e31 2022-10-23 thomas got_object_blob_open(struct got_blob_object **blob,
863 3efd8e31 2022-10-23 thomas     struct got_repository *repo, struct got_object *obj, size_t blocksize,
864 3efd8e31 2022-10-23 thomas     int outfd)
865 3efd8e31 2022-10-23 thomas {
866 db642191 2024-03-30 thomas 	return open_blob(blob, repo, got_object_get_id(obj), blocksize, outfd);
867 3efd8e31 2022-10-23 thomas }
868 3efd8e31 2022-10-23 thomas 
869 3efd8e31 2022-10-23 thomas static const struct got_error *
870 3efd8e31 2022-10-23 thomas open_tag(struct got_tag_object **tag, struct got_repository *repo,
871 3efd8e31 2022-10-23 thomas     struct got_object_id *id, int check_cache)
872 3efd8e31 2022-10-23 thomas {
873 3efd8e31 2022-10-23 thomas 	const struct got_error *err = NULL;
874 3efd8e31 2022-10-23 thomas 	struct got_packidx *packidx = NULL;
875 3efd8e31 2022-10-23 thomas 	int idx;
876 3efd8e31 2022-10-23 thomas 	char *path_packfile = NULL;
877 3efd8e31 2022-10-23 thomas 	struct got_object *obj = NULL;
878 3efd8e31 2022-10-23 thomas 	int obj_type = GOT_OBJ_TYPE_ANY;
879 3efd8e31 2022-10-23 thomas 
880 3efd8e31 2022-10-23 thomas 	if (check_cache) {
881 3efd8e31 2022-10-23 thomas 		*tag = got_repo_get_cached_tag(repo, id);
882 3efd8e31 2022-10-23 thomas 		if (*tag != NULL) {
883 3efd8e31 2022-10-23 thomas 			(*tag)->refcnt++;
884 3efd8e31 2022-10-23 thomas 			return NULL;
885 3efd8e31 2022-10-23 thomas 		}
886 3efd8e31 2022-10-23 thomas 	} else
887 3efd8e31 2022-10-23 thomas 		*tag = NULL;
888 3efd8e31 2022-10-23 thomas 
889 3efd8e31 2022-10-23 thomas 	err = got_repo_search_packidx(&packidx, &idx, repo, id);
890 3efd8e31 2022-10-23 thomas 	if (err == NULL) {
891 3efd8e31 2022-10-23 thomas 		struct got_pack *pack = NULL;
892 3efd8e31 2022-10-23 thomas 		uint8_t *buf = NULL;
893 3efd8e31 2022-10-23 thomas 		size_t len;
894 3efd8e31 2022-10-23 thomas 
895 3efd8e31 2022-10-23 thomas 		err = got_packidx_get_packfile_path(&path_packfile,
896 3efd8e31 2022-10-23 thomas 		    packidx->path_packidx);
897 3efd8e31 2022-10-23 thomas 		if (err)
898 3efd8e31 2022-10-23 thomas 			return err;
899 3efd8e31 2022-10-23 thomas 
900 3efd8e31 2022-10-23 thomas 		pack = got_repo_get_cached_pack(repo, path_packfile);
901 3efd8e31 2022-10-23 thomas 		if (pack == NULL) {
902 3efd8e31 2022-10-23 thomas 			err = got_repo_cache_pack(&pack, repo, path_packfile,
903 3efd8e31 2022-10-23 thomas 			    packidx);
904 3efd8e31 2022-10-23 thomas 			if (err)
905 3efd8e31 2022-10-23 thomas 				goto done;
906 3efd8e31 2022-10-23 thomas 		}
907 3efd8e31 2022-10-23 thomas 
908 3efd8e31 2022-10-23 thomas 		/* Beware of "lightweight" tags: Check object type first. */
909 3efd8e31 2022-10-23 thomas 		err = got_packfile_open_object(&obj, pack, packidx, idx, id);
910 3efd8e31 2022-10-23 thomas 		if (err)
911 3efd8e31 2022-10-23 thomas 			goto done;
912 3efd8e31 2022-10-23 thomas 		obj_type = obj->type;
913 3efd8e31 2022-10-23 thomas 		if (obj_type != GOT_OBJ_TYPE_TAG) {
914 3efd8e31 2022-10-23 thomas 			err = got_error(GOT_ERR_OBJ_TYPE);
915 3efd8e31 2022-10-23 thomas 			got_object_close(obj);
916 3efd8e31 2022-10-23 thomas 			goto done;
917 3efd8e31 2022-10-23 thomas 		}
918 3efd8e31 2022-10-23 thomas 		err = got_packfile_extract_object_to_mem(&buf, &len,
919 3efd8e31 2022-10-23 thomas 		    obj, pack);
920 3efd8e31 2022-10-23 thomas 		got_object_close(obj);
921 3efd8e31 2022-10-23 thomas 		if (err)
922 3efd8e31 2022-10-23 thomas 			goto done;
923 3efd8e31 2022-10-23 thomas 		err = got_object_parse_tag(tag, buf, len);
924 3efd8e31 2022-10-23 thomas 		free(buf);
925 3efd8e31 2022-10-23 thomas 	} else if (err->code == GOT_ERR_NO_OBJ) {
926 3efd8e31 2022-10-23 thomas 		int fd;
927 3efd8e31 2022-10-23 thomas 
928 3efd8e31 2022-10-23 thomas 		err = got_object_open_loose_fd(&fd, id, repo);
929 3efd8e31 2022-10-23 thomas 		if (err)
930 3efd8e31 2022-10-23 thomas 			return err;
931 3efd8e31 2022-10-23 thomas 		err = got_object_read_header(&obj, fd);
932 3efd8e31 2022-10-23 thomas 		if (close(fd) == -1 && err == NULL)
933 3efd8e31 2022-10-23 thomas 			err = got_error_from_errno("close");
934 3efd8e31 2022-10-23 thomas 		if (err)
935 3efd8e31 2022-10-23 thomas 			return err;
936 3efd8e31 2022-10-23 thomas 		obj_type = obj->type;
937 3efd8e31 2022-10-23 thomas 		got_object_close(obj);
938 3efd8e31 2022-10-23 thomas 		if (obj_type != GOT_OBJ_TYPE_TAG)
939 3efd8e31 2022-10-23 thomas 			return got_error(GOT_ERR_OBJ_TYPE);
940 3efd8e31 2022-10-23 thomas 
941 3efd8e31 2022-10-23 thomas 		err = got_object_open_loose_fd(&fd, id, repo);
942 3efd8e31 2022-10-23 thomas 		if (err)
943 3efd8e31 2022-10-23 thomas 			return err;
944 3efd8e31 2022-10-23 thomas 		err = got_object_read_tag(tag, fd, id, 0);
945 3efd8e31 2022-10-23 thomas 		if (close(fd) == -1 && err == NULL)
946 3efd8e31 2022-10-23 thomas 			err = got_error_from_errno("close");
947 3efd8e31 2022-10-23 thomas 		if (err)
948 3efd8e31 2022-10-23 thomas 			return err;
949 3efd8e31 2022-10-23 thomas 	}
950 3efd8e31 2022-10-23 thomas 
951 3efd8e31 2022-10-23 thomas 	if (err == NULL) {
952 3efd8e31 2022-10-23 thomas 		(*tag)->refcnt++;
953 3efd8e31 2022-10-23 thomas 		err = got_repo_cache_tag(repo, id, *tag);
954 3efd8e31 2022-10-23 thomas 		if (err) {
955 3efd8e31 2022-10-23 thomas 			if (err->code == GOT_ERR_OBJ_EXISTS ||
956 3efd8e31 2022-10-23 thomas 			    err->code == GOT_ERR_OBJ_TOO_LARGE)
957 3efd8e31 2022-10-23 thomas 				err = NULL;
958 3efd8e31 2022-10-23 thomas 		}
959 3efd8e31 2022-10-23 thomas 	}
960 3efd8e31 2022-10-23 thomas done:
961 3efd8e31 2022-10-23 thomas 	free(path_packfile);
962 3efd8e31 2022-10-23 thomas 	return err;
963 3efd8e31 2022-10-23 thomas }
964 3efd8e31 2022-10-23 thomas 
965 3efd8e31 2022-10-23 thomas const struct got_error *
966 3efd8e31 2022-10-23 thomas got_object_open_as_tag(struct got_tag_object **tag,
967 3efd8e31 2022-10-23 thomas     struct got_repository *repo, struct got_object_id *id)
968 3efd8e31 2022-10-23 thomas {
969 3efd8e31 2022-10-23 thomas 	*tag = got_repo_get_cached_tag(repo, id);
970 3efd8e31 2022-10-23 thomas 	if (*tag != NULL) {
971 3efd8e31 2022-10-23 thomas 		(*tag)->refcnt++;
972 3efd8e31 2022-10-23 thomas 		return NULL;
973 3efd8e31 2022-10-23 thomas 	}
974 3efd8e31 2022-10-23 thomas 
975 3efd8e31 2022-10-23 thomas 	return open_tag(tag, repo, id, 0);
976 3efd8e31 2022-10-23 thomas }
977 3efd8e31 2022-10-23 thomas 
978 3efd8e31 2022-10-23 thomas const struct got_error *
979 3efd8e31 2022-10-23 thomas got_object_tag_open(struct got_tag_object **tag,
980 3efd8e31 2022-10-23 thomas     struct got_repository *repo, struct got_object *obj)
981 3efd8e31 2022-10-23 thomas {
982 3efd8e31 2022-10-23 thomas 	return open_tag(tag, repo, got_object_get_id(obj), 1);
983 3efd8e31 2022-10-23 thomas }