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 fde1a996 2023-08-23 thomas 
 17 fde1a996 2023-08-23 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 3efd8e31 2022-10-23 thomas 
 29 3efd8e31 2022-10-23 thomas #include "got_error.h"
 30 3efd8e31 2022-10-23 thomas #include "got_object.h"
 31 3efd8e31 2022-10-23 thomas #include "got_repository.h"
 32 3efd8e31 2022-10-23 thomas #include "got_path.h"
 33 3efd8e31 2022-10-23 thomas 
 34 3efd8e31 2022-10-23 thomas #include "got_lib_delta.h"
 35 3efd8e31 2022-10-23 thomas #include "got_lib_object.h"
 36 3efd8e31 2022-10-23 thomas #include "got_lib_object_cache.h"
 37 3efd8e31 2022-10-23 thomas #include "got_lib_object_parse.h"
 38 3efd8e31 2022-10-23 thomas #include "got_lib_pack.h"
 39 3efd8e31 2022-10-23 thomas #include "got_lib_repository.h"
 40 3efd8e31 2022-10-23 thomas 
 41 3efd8e31 2022-10-23 thomas const struct got_error *
 42 3efd8e31 2022-10-23 thomas got_object_open_packed(struct got_object **obj, struct got_object_id *id,
 43 3efd8e31 2022-10-23 thomas     struct got_repository *repo)
 44 3efd8e31 2022-10-23 thomas {
 45 3efd8e31 2022-10-23 thomas 	const struct got_error *err = NULL;
 46 3efd8e31 2022-10-23 thomas 	struct got_pack *pack = NULL;
 47 3efd8e31 2022-10-23 thomas 	struct got_packidx *packidx = NULL;
 48 3efd8e31 2022-10-23 thomas 	int idx;
 49 3efd8e31 2022-10-23 thomas 	char *path_packfile;
 50 3efd8e31 2022-10-23 thomas 
 51 3efd8e31 2022-10-23 thomas 	err = got_repo_search_packidx(&packidx, &idx, repo, id);
 52 3efd8e31 2022-10-23 thomas 	if (err)
 53 3efd8e31 2022-10-23 thomas 		return err;
 54 3efd8e31 2022-10-23 thomas 
 55 3efd8e31 2022-10-23 thomas 	err = got_packidx_get_packfile_path(&path_packfile,
 56 3efd8e31 2022-10-23 thomas 	    packidx->path_packidx);
 57 3efd8e31 2022-10-23 thomas 	if (err)
 58 3efd8e31 2022-10-23 thomas 		return err;
 59 3efd8e31 2022-10-23 thomas 
 60 3efd8e31 2022-10-23 thomas 	pack = got_repo_get_cached_pack(repo, path_packfile);
 61 3efd8e31 2022-10-23 thomas 	if (pack == NULL) {
 62 3efd8e31 2022-10-23 thomas 		err = got_repo_cache_pack(&pack, repo, path_packfile, packidx);
 63 3efd8e31 2022-10-23 thomas 		if (err)
 64 3efd8e31 2022-10-23 thomas 			goto done;
 65 3efd8e31 2022-10-23 thomas 	}
 66 3efd8e31 2022-10-23 thomas 
 67 3efd8e31 2022-10-23 thomas 	err = got_packfile_open_object(obj, pack, packidx, idx, id);
 68 3efd8e31 2022-10-23 thomas 	if (err)
 69 3efd8e31 2022-10-23 thomas 		return err;
 70 3efd8e31 2022-10-23 thomas 	(*obj)->refcnt++;
 71 3efd8e31 2022-10-23 thomas 
 72 3efd8e31 2022-10-23 thomas 	err = got_repo_cache_object(repo, id, *obj);
 73 3efd8e31 2022-10-23 thomas 	if (err) {
 74 3efd8e31 2022-10-23 thomas 		if (err->code == GOT_ERR_OBJ_EXISTS ||
 75 3efd8e31 2022-10-23 thomas 		    err->code == GOT_ERR_OBJ_TOO_LARGE)
 76 3efd8e31 2022-10-23 thomas 			err = NULL;
 77 3efd8e31 2022-10-23 thomas 	}
 78 3efd8e31 2022-10-23 thomas done:
 79 3efd8e31 2022-10-23 thomas 	free(path_packfile);
 80 3efd8e31 2022-10-23 thomas 	return err;
 81 3efd8e31 2022-10-23 thomas }
 82 3efd8e31 2022-10-23 thomas 
 83 3efd8e31 2022-10-23 thomas const struct got_error *
 84 3efd8e31 2022-10-23 thomas got_object_open_from_packfile(struct got_object **obj, struct got_object_id *id,
 85 3efd8e31 2022-10-23 thomas     struct got_pack *pack, struct got_packidx *packidx, int obj_idx,
 86 3efd8e31 2022-10-23 thomas     struct got_repository *repo)
 87 3efd8e31 2022-10-23 thomas {
 88 6d7eb4f7 2023-04-04 thomas 	const struct got_error *err;
 89 6d7eb4f7 2023-04-04 thomas 
 90 6d7eb4f7 2023-04-04 thomas 	*obj = got_repo_get_cached_object(repo, id);
 91 6d7eb4f7 2023-04-04 thomas 	if (*obj != NULL) {
 92 6d7eb4f7 2023-04-04 thomas 		(*obj)->refcnt++;
 93 6d7eb4f7 2023-04-04 thomas 		return NULL;
 94 6d7eb4f7 2023-04-04 thomas 	}
 95 6d7eb4f7 2023-04-04 thomas 
 96 6d7eb4f7 2023-04-04 thomas 	err = got_packfile_open_object(obj, pack, packidx, obj_idx, id);
 97 6d7eb4f7 2023-04-04 thomas 	if (err)
 98 6d7eb4f7 2023-04-04 thomas 		return err;
 99 6d7eb4f7 2023-04-04 thomas 	(*obj)->refcnt++;
100 6d7eb4f7 2023-04-04 thomas 
101 6d7eb4f7 2023-04-04 thomas 	err = got_repo_cache_object(repo, id, *obj);
102 6d7eb4f7 2023-04-04 thomas 	if (err) {
103 6d7eb4f7 2023-04-04 thomas 		if (err->code == GOT_ERR_OBJ_EXISTS ||
104 6d7eb4f7 2023-04-04 thomas 		    err->code == GOT_ERR_OBJ_TOO_LARGE)
105 6d7eb4f7 2023-04-04 thomas 			err = NULL;
106 6d7eb4f7 2023-04-04 thomas 		return err;
107 6d7eb4f7 2023-04-04 thomas 	}
108 6d7eb4f7 2023-04-04 thomas 	(*obj)->refcnt++;
109 6d7eb4f7 2023-04-04 thomas 	return NULL;
110 3efd8e31 2022-10-23 thomas }
111 3efd8e31 2022-10-23 thomas 
112 3efd8e31 2022-10-23 thomas const struct got_error *
113 3efd8e31 2022-10-23 thomas got_object_read_raw_delta(uint64_t *base_size, uint64_t *result_size,
114 3efd8e31 2022-10-23 thomas     off_t *delta_size, off_t *delta_compressed_size, off_t *delta_offset,
115 3efd8e31 2022-10-23 thomas     off_t *delta_out_offset, struct got_object_id **base_id, int delta_cache_fd,
116 3efd8e31 2022-10-23 thomas     struct got_packidx *packidx, int obj_idx, struct got_object_id *id,
117 3efd8e31 2022-10-23 thomas     struct got_repository *repo)
118 3efd8e31 2022-10-23 thomas {
119 3efd8e31 2022-10-23 thomas 	return got_error(GOT_ERR_NOT_IMPL);
120 3efd8e31 2022-10-23 thomas }
121 3efd8e31 2022-10-23 thomas 
122 3efd8e31 2022-10-23 thomas const struct got_error *
123 3efd8e31 2022-10-23 thomas got_object_open(struct got_object **obj, struct got_repository *repo,
124 3efd8e31 2022-10-23 thomas     struct got_object_id *id)
125 3efd8e31 2022-10-23 thomas {
126 3efd8e31 2022-10-23 thomas 	const struct got_error *err = NULL;
127 3efd8e31 2022-10-23 thomas 	int fd;
128 3efd8e31 2022-10-23 thomas 
129 3efd8e31 2022-10-23 thomas 	*obj = got_repo_get_cached_object(repo, id);
130 3efd8e31 2022-10-23 thomas 	if (*obj != NULL) {
131 3efd8e31 2022-10-23 thomas 		(*obj)->refcnt++;
132 3efd8e31 2022-10-23 thomas 		return NULL;
133 3efd8e31 2022-10-23 thomas 	}
134 3efd8e31 2022-10-23 thomas 
135 3efd8e31 2022-10-23 thomas 	err = got_object_open_packed(obj, id, repo);
136 3efd8e31 2022-10-23 thomas 	if (err) {
137 3efd8e31 2022-10-23 thomas 		if (err->code != GOT_ERR_NO_OBJ)
138 3efd8e31 2022-10-23 thomas 			return err;
139 3efd8e31 2022-10-23 thomas 	} else
140 3efd8e31 2022-10-23 thomas 		return NULL;
141 3efd8e31 2022-10-23 thomas 
142 3efd8e31 2022-10-23 thomas 	err = got_object_open_loose_fd(&fd, id, repo);
143 3efd8e31 2022-10-23 thomas 	if (err) {
144 3efd8e31 2022-10-23 thomas 		if (err->code == GOT_ERR_ERRNO && errno == ENOENT)
145 3efd8e31 2022-10-23 thomas 			err = got_error_no_obj(id);
146 3efd8e31 2022-10-23 thomas 		return err;
147 3efd8e31 2022-10-23 thomas 	}
148 3efd8e31 2022-10-23 thomas 
149 3efd8e31 2022-10-23 thomas 	err = got_object_read_header(obj, fd);
150 3efd8e31 2022-10-23 thomas 	if (err)
151 3efd8e31 2022-10-23 thomas 		goto done;
152 3efd8e31 2022-10-23 thomas 
153 3efd8e31 2022-10-23 thomas 	memcpy(&(*obj)->id, id, sizeof((*obj)->id));
154 3efd8e31 2022-10-23 thomas 	(*obj)->refcnt++;
155 3efd8e31 2022-10-23 thomas 
156 3efd8e31 2022-10-23 thomas 	err = got_repo_cache_object(repo, id, *obj);
157 3efd8e31 2022-10-23 thomas 	if (err) {
158 3efd8e31 2022-10-23 thomas 		if (err->code == GOT_ERR_OBJ_EXISTS ||
159 3efd8e31 2022-10-23 thomas 		    err->code == GOT_ERR_OBJ_TOO_LARGE)
160 3efd8e31 2022-10-23 thomas 			err = NULL;
161 3efd8e31 2022-10-23 thomas 	}
162 3efd8e31 2022-10-23 thomas done:
163 3efd8e31 2022-10-23 thomas 	if (close(fd) == -1 && err == NULL)
164 3efd8e31 2022-10-23 thomas 		err = got_error_from_errno("close");
165 3efd8e31 2022-10-23 thomas 	return err;
166 3efd8e31 2022-10-23 thomas }
167 3efd8e31 2022-10-23 thomas 
168 3efd8e31 2022-10-23 thomas static const struct got_error *
169 3efd8e31 2022-10-23 thomas wrap_fd(FILE **f, int wrapped_fd)
170 3efd8e31 2022-10-23 thomas {
171 3efd8e31 2022-10-23 thomas 	const struct got_error *err = NULL;
172 3efd8e31 2022-10-23 thomas 	int fd;
173 3efd8e31 2022-10-23 thomas 
174 3efd8e31 2022-10-23 thomas 	if (ftruncate(wrapped_fd, 0L) == -1)
175 3efd8e31 2022-10-23 thomas 		return got_error_from_errno("ftruncate");
176 3efd8e31 2022-10-23 thomas 
177 3efd8e31 2022-10-23 thomas 	if (lseek(wrapped_fd, 0L, SEEK_SET) == -1)
178 3efd8e31 2022-10-23 thomas 		return got_error_from_errno("lseek");
179 3efd8e31 2022-10-23 thomas 
180 3efd8e31 2022-10-23 thomas 	fd = dup(wrapped_fd);
181 3efd8e31 2022-10-23 thomas 	if (fd == -1)
182 3efd8e31 2022-10-23 thomas 		return got_error_from_errno("dup");
183 3efd8e31 2022-10-23 thomas 
184 3efd8e31 2022-10-23 thomas 	*f = fdopen(fd, "w+");
185 3efd8e31 2022-10-23 thomas 	if (*f == NULL) {
186 3efd8e31 2022-10-23 thomas 		err = got_error_from_errno("fdopen");
187 3efd8e31 2022-10-23 thomas 		close(fd);
188 3efd8e31 2022-10-23 thomas 	}
189 3efd8e31 2022-10-23 thomas 	return err;
190 3efd8e31 2022-10-23 thomas }
191 3efd8e31 2022-10-23 thomas 
192 3efd8e31 2022-10-23 thomas static const struct got_error *
193 3efd8e31 2022-10-23 thomas read_packed_object_raw(uint8_t **outbuf, off_t *size, size_t *hdrlen,
194 3efd8e31 2022-10-23 thomas     int outfd, struct got_pack *pack, struct got_packidx *packidx, int idx,
195 3efd8e31 2022-10-23 thomas     struct got_object_id *id)
196 3efd8e31 2022-10-23 thomas {
197 3efd8e31 2022-10-23 thomas 	const struct got_error *err = NULL;
198 3efd8e31 2022-10-23 thomas 	uint64_t raw_size = 0;
199 3efd8e31 2022-10-23 thomas 	struct got_object *obj;
200 3efd8e31 2022-10-23 thomas 	FILE *outfile = NULL, *basefile = NULL, *accumfile = NULL;
201 3efd8e31 2022-10-23 thomas 
202 3efd8e31 2022-10-23 thomas 	*outbuf = NULL;
203 3efd8e31 2022-10-23 thomas 	*size = 0;
204 3efd8e31 2022-10-23 thomas 	*hdrlen = 0;
205 3efd8e31 2022-10-23 thomas 
206 3efd8e31 2022-10-23 thomas 	err = got_packfile_open_object(&obj, pack, packidx, idx, id);
207 3efd8e31 2022-10-23 thomas 	if (err)
208 3efd8e31 2022-10-23 thomas 		return err;
209 3efd8e31 2022-10-23 thomas 
210 3efd8e31 2022-10-23 thomas 	if (obj->flags & GOT_OBJ_FLAG_DELTIFIED) {
211 3efd8e31 2022-10-23 thomas 		err = got_pack_get_max_delta_object_size(&raw_size, obj, pack);
212 3efd8e31 2022-10-23 thomas 		if (err)
213 3efd8e31 2022-10-23 thomas 			goto done;
214 3efd8e31 2022-10-23 thomas 	} else
215 3efd8e31 2022-10-23 thomas 		raw_size = obj->size;
216 3efd8e31 2022-10-23 thomas 
217 3efd8e31 2022-10-23 thomas 	if (raw_size <= GOT_DELTA_RESULT_SIZE_CACHED_MAX) {
218 3efd8e31 2022-10-23 thomas 		size_t len;
219 3efd8e31 2022-10-23 thomas 		err = got_packfile_extract_object_to_mem(outbuf, &len,
220 3efd8e31 2022-10-23 thomas 		    obj, pack);
221 3efd8e31 2022-10-23 thomas 		if (err)
222 3efd8e31 2022-10-23 thomas 			goto done;
223 3efd8e31 2022-10-23 thomas 		*size = (off_t)len;
224 3efd8e31 2022-10-23 thomas 	} else {
225 3efd8e31 2022-10-23 thomas 		/*
226 3efd8e31 2022-10-23 thomas 		 * XXX This uses 3 file extra descriptors for no good reason.
227 3efd8e31 2022-10-23 thomas 		 * We should have got_packfile_extract_object_to_fd().
228 3efd8e31 2022-10-23 thomas 		 */
229 3efd8e31 2022-10-23 thomas 		err = wrap_fd(&outfile, outfd);
230 3efd8e31 2022-10-23 thomas 		if (err)
231 3efd8e31 2022-10-23 thomas 			goto done;
232 3efd8e31 2022-10-23 thomas 		err = wrap_fd(&basefile, pack->basefd);
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(&accumfile, pack->accumfd);
236 3efd8e31 2022-10-23 thomas 		if (err)
237 3efd8e31 2022-10-23 thomas 			goto done;
238 3efd8e31 2022-10-23 thomas 		err = got_packfile_extract_object(pack, obj, outfile, basefile,
239 3efd8e31 2022-10-23 thomas 		    accumfile);
240 3efd8e31 2022-10-23 thomas 		if (err)
241 3efd8e31 2022-10-23 thomas 			goto done;
242 b296ac1c 2023-01-09 thomas 		*size = obj->size;
243 3efd8e31 2022-10-23 thomas 	}
244 3efd8e31 2022-10-23 thomas 
245 3efd8e31 2022-10-23 thomas 	*hdrlen = obj->hdrlen;
246 3efd8e31 2022-10-23 thomas done:
247 3efd8e31 2022-10-23 thomas 	got_object_close(obj);
248 3efd8e31 2022-10-23 thomas 	if (outfile && fclose(outfile) == EOF && err == NULL)
249 3efd8e31 2022-10-23 thomas 		err = got_error_from_errno("fclose");
250 3efd8e31 2022-10-23 thomas 	if (basefile && fclose(basefile) == EOF && err == NULL)
251 3efd8e31 2022-10-23 thomas 		err = got_error_from_errno("fclose");
252 3efd8e31 2022-10-23 thomas 	if (accumfile && fclose(accumfile) == EOF && err == NULL)
253 3efd8e31 2022-10-23 thomas 		err = got_error_from_errno("fclose");
254 3efd8e31 2022-10-23 thomas 	return err;
255 3efd8e31 2022-10-23 thomas 
256 3efd8e31 2022-10-23 thomas }
257 3efd8e31 2022-10-23 thomas 
258 3efd8e31 2022-10-23 thomas static void
259 3efd8e31 2022-10-23 thomas put_raw_object_tempfile(struct got_raw_object *obj)
260 3efd8e31 2022-10-23 thomas {
261 3efd8e31 2022-10-23 thomas 	struct got_repository *repo = obj->close_arg;
262 3efd8e31 2022-10-23 thomas 
263 3efd8e31 2022-10-23 thomas 	if (obj->tempfile_idx != -1)
264 3efd8e31 2022-10-23 thomas 		got_repo_temp_fds_put(obj->tempfile_idx, repo);
265 3efd8e31 2022-10-23 thomas }
266 3efd8e31 2022-10-23 thomas 
267 3efd8e31 2022-10-23 thomas /* *outfd must be initialized to -1 by caller */
268 3efd8e31 2022-10-23 thomas const struct got_error *
269 3efd8e31 2022-10-23 thomas got_object_raw_open(struct got_raw_object **obj, int *outfd,
270 3efd8e31 2022-10-23 thomas     struct got_repository *repo, struct got_object_id *id)
271 3efd8e31 2022-10-23 thomas {
272 3efd8e31 2022-10-23 thomas 	const struct got_error *err = NULL;
273 3efd8e31 2022-10-23 thomas 	struct got_packidx *packidx = NULL;
274 ab9f7b87 2023-01-09 thomas 	int idx, tempfd, tempfile_idx;
275 3efd8e31 2022-10-23 thomas 	uint8_t *outbuf = NULL;
276 3efd8e31 2022-10-23 thomas 	off_t size = 0;
277 3efd8e31 2022-10-23 thomas 	size_t hdrlen = 0;
278 3efd8e31 2022-10-23 thomas 	char *path_packfile = NULL;
279 3efd8e31 2022-10-23 thomas 
280 3efd8e31 2022-10-23 thomas 	*obj = got_repo_get_cached_raw_object(repo, id);
281 3efd8e31 2022-10-23 thomas 	if (*obj != NULL) {
282 3efd8e31 2022-10-23 thomas 		(*obj)->refcnt++;
283 3efd8e31 2022-10-23 thomas 		return NULL;
284 3efd8e31 2022-10-23 thomas 	}
285 3efd8e31 2022-10-23 thomas 
286 ab9f7b87 2023-01-09 thomas 	err = got_repo_temp_fds_get(&tempfd, &tempfile_idx, repo);
287 ab9f7b87 2023-01-09 thomas 	if (err)
288 ab9f7b87 2023-01-09 thomas 		return err;
289 3efd8e31 2022-10-23 thomas 
290 3efd8e31 2022-10-23 thomas 	err = got_repo_search_packidx(&packidx, &idx, repo, id);
291 3efd8e31 2022-10-23 thomas 	if (err == NULL) {
292 3efd8e31 2022-10-23 thomas 		struct got_pack *pack = NULL;
293 3efd8e31 2022-10-23 thomas 
294 3efd8e31 2022-10-23 thomas 		err = got_packidx_get_packfile_path(&path_packfile,
295 3efd8e31 2022-10-23 thomas 		    packidx->path_packidx);
296 3efd8e31 2022-10-23 thomas 		if (err)
297 3efd8e31 2022-10-23 thomas 			goto done;
298 3efd8e31 2022-10-23 thomas 
299 3efd8e31 2022-10-23 thomas 		pack = got_repo_get_cached_pack(repo, path_packfile);
300 3efd8e31 2022-10-23 thomas 		if (pack == NULL) {
301 3efd8e31 2022-10-23 thomas 			err = got_repo_cache_pack(&pack, repo, path_packfile,
302 3efd8e31 2022-10-23 thomas 			    packidx);
303 3efd8e31 2022-10-23 thomas 			if (err)
304 3efd8e31 2022-10-23 thomas 				goto done;
305 3efd8e31 2022-10-23 thomas 		}
306 3efd8e31 2022-10-23 thomas 		err = read_packed_object_raw(&outbuf, &size, &hdrlen,
307 ab9f7b87 2023-01-09 thomas 		    tempfd, pack, packidx, idx, id);
308 3efd8e31 2022-10-23 thomas 		if (err)
309 3efd8e31 2022-10-23 thomas 			goto done;
310 3efd8e31 2022-10-23 thomas 	} else if (err->code == GOT_ERR_NO_OBJ) {
311 3efd8e31 2022-10-23 thomas 		int fd;
312 3efd8e31 2022-10-23 thomas 
313 3efd8e31 2022-10-23 thomas 		err = got_object_open_loose_fd(&fd, id, repo);
314 3efd8e31 2022-10-23 thomas 		if (err)
315 3efd8e31 2022-10-23 thomas 			goto done;
316 3efd8e31 2022-10-23 thomas 		err = got_object_read_raw(&outbuf, &size, &hdrlen,
317 ab9f7b87 2023-01-09 thomas 		    GOT_DELTA_RESULT_SIZE_CACHED_MAX, tempfd, id, fd);
318 3efd8e31 2022-10-23 thomas 		if (close(fd) == -1 && err == NULL)
319 3efd8e31 2022-10-23 thomas 			err = got_error_from_errno("close");
320 3efd8e31 2022-10-23 thomas 		if (err)
321 ab9f7b87 2023-01-09 thomas 			goto done;
322 ab9f7b87 2023-01-09 thomas 	}
323 ab9f7b87 2023-01-09 thomas 
324 ab9f7b87 2023-01-09 thomas 	if (outbuf == NULL) {
325 ab9f7b87 2023-01-09 thomas 		if (*outfd != -1) {
326 ab9f7b87 2023-01-09 thomas 			err = got_error_msg(GOT_ERR_NOT_IMPL, "bad outfd");
327 ab9f7b87 2023-01-09 thomas 			goto done;
328 ab9f7b87 2023-01-09 thomas 		}
329 ab9f7b87 2023-01-09 thomas 
330 ab9f7b87 2023-01-09 thomas 		/*
331 ab9f7b87 2023-01-09 thomas 		 * Duplicate tempfile descriptor to allow use of
332 ab9f7b87 2023-01-09 thomas 		 * fdopen(3) inside got_object_raw_alloc().
333 ab9f7b87 2023-01-09 thomas 		 */
334 ab9f7b87 2023-01-09 thomas 		*outfd = dup(tempfd);
335 ab9f7b87 2023-01-09 thomas 		if (*outfd == -1) {
336 ab9f7b87 2023-01-09 thomas 			err = got_error_from_errno("dup");
337 3efd8e31 2022-10-23 thomas 			goto done;
338 ab9f7b87 2023-01-09 thomas 		}
339 3efd8e31 2022-10-23 thomas 	}
340 3efd8e31 2022-10-23 thomas 
341 ebe6ec92 2023-01-09 thomas 	err = got_object_raw_alloc(obj, outbuf, outfd,
342 ebe6ec92 2023-01-09 thomas 	    GOT_DELTA_RESULT_SIZE_CACHED_MAX, hdrlen, size);
343 3efd8e31 2022-10-23 thomas 	if (err)
344 3efd8e31 2022-10-23 thomas 		goto done;
345 3efd8e31 2022-10-23 thomas 
346 3efd8e31 2022-10-23 thomas 	err = got_repo_cache_raw_object(repo, id, *obj);
347 3efd8e31 2022-10-23 thomas 	if (err) {
348 3efd8e31 2022-10-23 thomas 		if (err->code == GOT_ERR_OBJ_EXISTS ||
349 3efd8e31 2022-10-23 thomas 		    err->code == GOT_ERR_OBJ_TOO_LARGE)
350 3efd8e31 2022-10-23 thomas 			err = NULL;
351 3efd8e31 2022-10-23 thomas 	}
352 3efd8e31 2022-10-23 thomas done:
353 3efd8e31 2022-10-23 thomas 	free(path_packfile);
354 3efd8e31 2022-10-23 thomas 	if (err) {
355 3efd8e31 2022-10-23 thomas 		if (*obj) {
356 3efd8e31 2022-10-23 thomas 			got_object_raw_close(*obj);
357 3efd8e31 2022-10-23 thomas 			*obj = NULL;
358 3efd8e31 2022-10-23 thomas 		}
359 3efd8e31 2022-10-23 thomas 		free(outbuf);
360 ab9f7b87 2023-01-09 thomas 		got_repo_temp_fds_put(tempfile_idx, repo);
361 ab9f7b87 2023-01-09 thomas 		if (*outfd != -1) {
362 ab9f7b87 2023-01-09 thomas 			close(*outfd);
363 ab9f7b87 2023-01-09 thomas 			*outfd = -1;
364 ab9f7b87 2023-01-09 thomas 		}
365 3efd8e31 2022-10-23 thomas 	} else {
366 ab9f7b87 2023-01-09 thomas 		if (((*obj)->f == NULL && (*obj)->fd == -1)) {
367 ab9f7b87 2023-01-09 thomas 			/* This raw object is not backed by a file. */
368 ab9f7b87 2023-01-09 thomas 			got_repo_temp_fds_put(tempfile_idx, repo);
369 ab9f7b87 2023-01-09 thomas 			if (*outfd != -1) {
370 ab9f7b87 2023-01-09 thomas 				close(*outfd);
371 ab9f7b87 2023-01-09 thomas 				*outfd = -1;
372 ab9f7b87 2023-01-09 thomas 			}
373 ab9f7b87 2023-01-09 thomas 		} else {
374 ab9f7b87 2023-01-09 thomas 			(*obj)->tempfile_idx = tempfile_idx;
375 ab9f7b87 2023-01-09 thomas 			(*obj)->close_cb = put_raw_object_tempfile;
376 ab9f7b87 2023-01-09 thomas 			(*obj)->close_arg = repo;
377 ab9f7b87 2023-01-09 thomas 		}
378 3efd8e31 2022-10-23 thomas 	}
379 3efd8e31 2022-10-23 thomas 	return err;
380 3efd8e31 2022-10-23 thomas }
381 3efd8e31 2022-10-23 thomas 
382 3efd8e31 2022-10-23 thomas static const struct got_error *
383 3efd8e31 2022-10-23 thomas open_commit(struct got_commit_object **commit,
384 3efd8e31 2022-10-23 thomas     struct got_repository *repo, struct got_object_id *id, int check_cache)
385 3efd8e31 2022-10-23 thomas {
386 3efd8e31 2022-10-23 thomas 	const struct got_error *err = NULL;
387 3efd8e31 2022-10-23 thomas 	struct got_packidx *packidx = NULL;
388 3efd8e31 2022-10-23 thomas 	int idx;
389 3efd8e31 2022-10-23 thomas 	char *path_packfile = NULL;
390 3efd8e31 2022-10-23 thomas 
391 3efd8e31 2022-10-23 thomas 	if (check_cache) {
392 3efd8e31 2022-10-23 thomas 		*commit = got_repo_get_cached_commit(repo, id);
393 3efd8e31 2022-10-23 thomas 		if (*commit != NULL) {
394 3efd8e31 2022-10-23 thomas 			(*commit)->refcnt++;
395 3efd8e31 2022-10-23 thomas 			return NULL;
396 3efd8e31 2022-10-23 thomas 		}
397 3efd8e31 2022-10-23 thomas 	} else
398 3efd8e31 2022-10-23 thomas 		*commit = NULL;
399 3efd8e31 2022-10-23 thomas 
400 3efd8e31 2022-10-23 thomas 	err = got_repo_search_packidx(&packidx, &idx, repo, id);
401 3efd8e31 2022-10-23 thomas 	if (err == NULL) {
402 3efd8e31 2022-10-23 thomas 		struct got_pack *pack = NULL;
403 3efd8e31 2022-10-23 thomas 		struct got_object *obj;
404 3efd8e31 2022-10-23 thomas 		uint8_t *buf;
405 3efd8e31 2022-10-23 thomas 		size_t len;
406 3efd8e31 2022-10-23 thomas 
407 3efd8e31 2022-10-23 thomas 		err = got_packidx_get_packfile_path(&path_packfile,
408 3efd8e31 2022-10-23 thomas 		    packidx->path_packidx);
409 3efd8e31 2022-10-23 thomas 		if (err)
410 3efd8e31 2022-10-23 thomas 			return err;
411 3efd8e31 2022-10-23 thomas 
412 3efd8e31 2022-10-23 thomas 		pack = got_repo_get_cached_pack(repo, path_packfile);
413 3efd8e31 2022-10-23 thomas 		if (pack == NULL) {
414 3efd8e31 2022-10-23 thomas 			err = got_repo_cache_pack(&pack, repo, path_packfile,
415 3efd8e31 2022-10-23 thomas 			    packidx);
416 3efd8e31 2022-10-23 thomas 			if (err)
417 3efd8e31 2022-10-23 thomas 				goto done;
418 3efd8e31 2022-10-23 thomas 		}
419 3efd8e31 2022-10-23 thomas 		err = got_packfile_open_object(&obj, pack, packidx, idx, id);
420 3efd8e31 2022-10-23 thomas 		if (err)
421 3efd8e31 2022-10-23 thomas 			goto done;
422 3efd8e31 2022-10-23 thomas 		err = got_packfile_extract_object_to_mem(&buf, &len,
423 3efd8e31 2022-10-23 thomas 		    obj, pack);
424 3efd8e31 2022-10-23 thomas 		got_object_close(obj);
425 3efd8e31 2022-10-23 thomas 		if (err)
426 3efd8e31 2022-10-23 thomas 			goto done;
427 3efd8e31 2022-10-23 thomas 		err = got_object_parse_commit(commit, buf, len);
428 3efd8e31 2022-10-23 thomas 		free(buf);
429 3efd8e31 2022-10-23 thomas 	} else if (err->code == GOT_ERR_NO_OBJ) {
430 3efd8e31 2022-10-23 thomas 		int fd;
431 3efd8e31 2022-10-23 thomas 
432 3efd8e31 2022-10-23 thomas 		err = got_object_open_loose_fd(&fd, id, repo);
433 3efd8e31 2022-10-23 thomas 		if (err)
434 3efd8e31 2022-10-23 thomas 			return err;
435 3efd8e31 2022-10-23 thomas 		err = got_object_read_commit(commit, fd, id, 0);
436 3efd8e31 2022-10-23 thomas 		if (close(fd) == -1 && err == NULL)
437 3efd8e31 2022-10-23 thomas 			err = got_error_from_errno("close");
438 3efd8e31 2022-10-23 thomas 		if (err)
439 3efd8e31 2022-10-23 thomas 			return err;
440 3efd8e31 2022-10-23 thomas 	}
441 3efd8e31 2022-10-23 thomas 
442 3efd8e31 2022-10-23 thomas 	if (err == NULL) {
443 3efd8e31 2022-10-23 thomas 		(*commit)->refcnt++;
444 3efd8e31 2022-10-23 thomas 		err = got_repo_cache_commit(repo, id, *commit);
445 3efd8e31 2022-10-23 thomas 		if (err) {
446 3efd8e31 2022-10-23 thomas 			if (err->code == GOT_ERR_OBJ_EXISTS ||
447 3efd8e31 2022-10-23 thomas 			    err->code == GOT_ERR_OBJ_TOO_LARGE)
448 3efd8e31 2022-10-23 thomas 				err = NULL;
449 3efd8e31 2022-10-23 thomas 		}
450 3efd8e31 2022-10-23 thomas 	}
451 3efd8e31 2022-10-23 thomas done:
452 3efd8e31 2022-10-23 thomas 	free(path_packfile);
453 3efd8e31 2022-10-23 thomas 	return err;
454 3efd8e31 2022-10-23 thomas }
455 3efd8e31 2022-10-23 thomas 
456 3efd8e31 2022-10-23 thomas const struct got_error *
457 3efd8e31 2022-10-23 thomas got_object_open_as_commit(struct got_commit_object **commit,
458 3efd8e31 2022-10-23 thomas     struct got_repository *repo, struct got_object_id *id)
459 3efd8e31 2022-10-23 thomas {
460 3efd8e31 2022-10-23 thomas 	*commit = got_repo_get_cached_commit(repo, id);
461 3efd8e31 2022-10-23 thomas 	if (*commit != NULL) {
462 3efd8e31 2022-10-23 thomas 		(*commit)->refcnt++;
463 3efd8e31 2022-10-23 thomas 		return NULL;
464 3efd8e31 2022-10-23 thomas 	}
465 3efd8e31 2022-10-23 thomas 
466 3efd8e31 2022-10-23 thomas 	return open_commit(commit, repo, id, 0);
467 3efd8e31 2022-10-23 thomas }
468 3efd8e31 2022-10-23 thomas 
469 3efd8e31 2022-10-23 thomas const struct got_error *
470 3efd8e31 2022-10-23 thomas got_object_commit_open(struct got_commit_object **commit,
471 3efd8e31 2022-10-23 thomas     struct got_repository *repo, struct got_object *obj)
472 3efd8e31 2022-10-23 thomas {
473 3efd8e31 2022-10-23 thomas 	return open_commit(commit, repo, got_object_get_id(obj), 1);
474 3efd8e31 2022-10-23 thomas }
475 3efd8e31 2022-10-23 thomas 
476 3efd8e31 2022-10-23 thomas static const struct got_error *
477 3efd8e31 2022-10-23 thomas open_tree(struct got_tree_object **tree,
478 3efd8e31 2022-10-23 thomas     struct got_repository *repo, struct got_object_id *id, int check_cache)
479 3efd8e31 2022-10-23 thomas {
480 3efd8e31 2022-10-23 thomas 	const struct got_error *err = NULL;
481 3efd8e31 2022-10-23 thomas 	struct got_packidx *packidx = NULL;
482 3efd8e31 2022-10-23 thomas 	int idx;
483 3efd8e31 2022-10-23 thomas 	char *path_packfile = NULL;
484 3efd8e31 2022-10-23 thomas 	struct got_parsed_tree_entry *entries = NULL;
485 3efd8e31 2022-10-23 thomas 	size_t nentries = 0, nentries_alloc = 0, i;
486 3efd8e31 2022-10-23 thomas 	uint8_t *buf = NULL;
487 3efd8e31 2022-10-23 thomas 
488 3efd8e31 2022-10-23 thomas 	if (check_cache) {
489 3efd8e31 2022-10-23 thomas 		*tree = got_repo_get_cached_tree(repo, id);
490 3efd8e31 2022-10-23 thomas 		if (*tree != NULL) {
491 3efd8e31 2022-10-23 thomas 			(*tree)->refcnt++;
492 3efd8e31 2022-10-23 thomas 			return NULL;
493 3efd8e31 2022-10-23 thomas 		}
494 3efd8e31 2022-10-23 thomas 	} else
495 3efd8e31 2022-10-23 thomas 		*tree = NULL;
496 3efd8e31 2022-10-23 thomas 
497 3efd8e31 2022-10-23 thomas 	err = got_repo_search_packidx(&packidx, &idx, repo, id);
498 3efd8e31 2022-10-23 thomas 	if (err == NULL) {
499 3efd8e31 2022-10-23 thomas 		struct got_pack *pack = NULL;
500 3efd8e31 2022-10-23 thomas 		struct got_object *obj;
501 3efd8e31 2022-10-23 thomas 		size_t len;
502 3efd8e31 2022-10-23 thomas 
503 3efd8e31 2022-10-23 thomas 		err = got_packidx_get_packfile_path(&path_packfile,
504 3efd8e31 2022-10-23 thomas 		    packidx->path_packidx);
505 3efd8e31 2022-10-23 thomas 		if (err)
506 3efd8e31 2022-10-23 thomas 			return err;
507 3efd8e31 2022-10-23 thomas 
508 3efd8e31 2022-10-23 thomas 		pack = got_repo_get_cached_pack(repo, path_packfile);
509 3efd8e31 2022-10-23 thomas 		if (pack == NULL) {
510 3efd8e31 2022-10-23 thomas 			err = got_repo_cache_pack(&pack, repo, path_packfile,
511 3efd8e31 2022-10-23 thomas 			    packidx);
512 3efd8e31 2022-10-23 thomas 			if (err)
513 3efd8e31 2022-10-23 thomas 				goto done;
514 3efd8e31 2022-10-23 thomas 		}
515 3efd8e31 2022-10-23 thomas 		err = got_packfile_open_object(&obj, pack, packidx, idx, id);
516 3efd8e31 2022-10-23 thomas 		if (err)
517 3efd8e31 2022-10-23 thomas 			goto done;
518 3efd8e31 2022-10-23 thomas 		err = got_packfile_extract_object_to_mem(&buf, &len,
519 3efd8e31 2022-10-23 thomas 		    obj, pack);
520 3efd8e31 2022-10-23 thomas 		got_object_close(obj);
521 3efd8e31 2022-10-23 thomas 		if (err)
522 3efd8e31 2022-10-23 thomas 			goto done;
523 3efd8e31 2022-10-23 thomas 		err = got_object_parse_tree(&entries, &nentries,
524 3efd8e31 2022-10-23 thomas 		    &nentries_alloc, buf, len);
525 3efd8e31 2022-10-23 thomas 		if (err)
526 3efd8e31 2022-10-23 thomas 			goto done;
527 3efd8e31 2022-10-23 thomas 	} else if (err->code == GOT_ERR_NO_OBJ) {
528 3efd8e31 2022-10-23 thomas 		int fd;
529 3efd8e31 2022-10-23 thomas 
530 3efd8e31 2022-10-23 thomas 		err = got_object_open_loose_fd(&fd, id, repo);
531 3efd8e31 2022-10-23 thomas 		if (err)
532 3efd8e31 2022-10-23 thomas 			return err;
533 3efd8e31 2022-10-23 thomas 		err = got_object_read_tree(&entries, &nentries,
534 3efd8e31 2022-10-23 thomas 		    &nentries_alloc, &buf, fd, id);
535 3efd8e31 2022-10-23 thomas 		if (close(fd) == -1 && err == NULL)
536 3efd8e31 2022-10-23 thomas 			err = got_error_from_errno("close");
537 3efd8e31 2022-10-23 thomas 		if (err)
538 3efd8e31 2022-10-23 thomas 			goto done;
539 3efd8e31 2022-10-23 thomas 	} else
540 3efd8e31 2022-10-23 thomas 		goto done;
541 3efd8e31 2022-10-23 thomas 
542 3efd8e31 2022-10-23 thomas 	*tree = malloc(sizeof(**tree));
543 3efd8e31 2022-10-23 thomas 	if (*tree == NULL) {
544 3efd8e31 2022-10-23 thomas 		err = got_error_from_errno("malloc");
545 3efd8e31 2022-10-23 thomas 		goto done;
546 3efd8e31 2022-10-23 thomas 	}
547 3efd8e31 2022-10-23 thomas 	(*tree)->entries = calloc(nentries, sizeof(struct got_tree_entry));
548 3efd8e31 2022-10-23 thomas 	if ((*tree)->entries == NULL) {
549 3efd8e31 2022-10-23 thomas 		err = got_error_from_errno("malloc");
550 3efd8e31 2022-10-23 thomas 		goto done;
551 3efd8e31 2022-10-23 thomas 	}
552 3efd8e31 2022-10-23 thomas 	(*tree)->nentries = nentries;
553 3efd8e31 2022-10-23 thomas 	(*tree)->refcnt = 0;
554 3efd8e31 2022-10-23 thomas 
555 3efd8e31 2022-10-23 thomas 	for (i = 0; i < nentries; i++) {
556 3efd8e31 2022-10-23 thomas 		struct got_parsed_tree_entry *pe = &entries[i];
557 3efd8e31 2022-10-23 thomas 		struct got_tree_entry *te = &(*tree)->entries[i];
558 3efd8e31 2022-10-23 thomas 	
559 3efd8e31 2022-10-23 thomas 		if (strlcpy(te->name, pe->name,
560 3efd8e31 2022-10-23 thomas 		    sizeof(te->name)) >= sizeof(te->name)) {
561 3efd8e31 2022-10-23 thomas 			err = got_error(GOT_ERR_NO_SPACE);
562 3efd8e31 2022-10-23 thomas 			goto done;
563 3efd8e31 2022-10-23 thomas 		}
564 3efd8e31 2022-10-23 thomas 		memcpy(te->id.sha1, pe->id, SHA1_DIGEST_LENGTH);
565 3efd8e31 2022-10-23 thomas 		te->mode = pe->mode;
566 3efd8e31 2022-10-23 thomas 		te->idx = i;
567 3efd8e31 2022-10-23 thomas 	}
568 3efd8e31 2022-10-23 thomas done:
569 3efd8e31 2022-10-23 thomas 	free(path_packfile);
570 3efd8e31 2022-10-23 thomas 	free(entries);
571 3efd8e31 2022-10-23 thomas 	free(buf);
572 3efd8e31 2022-10-23 thomas 	if (err == NULL) {
573 3efd8e31 2022-10-23 thomas 		(*tree)->refcnt++;
574 3efd8e31 2022-10-23 thomas 		err = got_repo_cache_tree(repo, id, *tree);
575 3efd8e31 2022-10-23 thomas 		if (err) {
576 3efd8e31 2022-10-23 thomas 			if (err->code == GOT_ERR_OBJ_EXISTS ||
577 3efd8e31 2022-10-23 thomas 			    err->code == GOT_ERR_OBJ_TOO_LARGE)
578 3efd8e31 2022-10-23 thomas 				err = NULL;
579 3efd8e31 2022-10-23 thomas 		}
580 3efd8e31 2022-10-23 thomas 	}
581 3efd8e31 2022-10-23 thomas 	if (err) {
582 3efd8e31 2022-10-23 thomas 		if (*tree)
583 3efd8e31 2022-10-23 thomas 			free((*tree)->entries);
584 3efd8e31 2022-10-23 thomas 		free(*tree);
585 3efd8e31 2022-10-23 thomas 		*tree = NULL;
586 3efd8e31 2022-10-23 thomas 	}
587 3efd8e31 2022-10-23 thomas 	return err;
588 3efd8e31 2022-10-23 thomas }
589 3efd8e31 2022-10-23 thomas 
590 3efd8e31 2022-10-23 thomas const struct got_error *
591 3efd8e31 2022-10-23 thomas got_object_open_as_tree(struct got_tree_object **tree,
592 3efd8e31 2022-10-23 thomas     struct got_repository *repo, struct got_object_id *id)
593 3efd8e31 2022-10-23 thomas {
594 3efd8e31 2022-10-23 thomas 	*tree = got_repo_get_cached_tree(repo, id);
595 3efd8e31 2022-10-23 thomas 	if (*tree != NULL) {
596 3efd8e31 2022-10-23 thomas 		(*tree)->refcnt++;
597 3efd8e31 2022-10-23 thomas 		return NULL;
598 3efd8e31 2022-10-23 thomas 	}
599 3efd8e31 2022-10-23 thomas 
600 3efd8e31 2022-10-23 thomas 	return open_tree(tree, repo, id, 0);
601 3efd8e31 2022-10-23 thomas }
602 3efd8e31 2022-10-23 thomas 
603 3efd8e31 2022-10-23 thomas const struct got_error *
604 3efd8e31 2022-10-23 thomas got_object_tree_open(struct got_tree_object **tree,
605 3efd8e31 2022-10-23 thomas     struct got_repository *repo, struct got_object *obj)
606 3efd8e31 2022-10-23 thomas {
607 3efd8e31 2022-10-23 thomas 	return open_tree(tree, repo, got_object_get_id(obj), 1);
608 3efd8e31 2022-10-23 thomas }
609 3efd8e31 2022-10-23 thomas 
610 3efd8e31 2022-10-23 thomas const struct got_error *
611 3efd8e31 2022-10-23 thomas got_object_open_as_blob(struct got_blob_object **blob,
612 3efd8e31 2022-10-23 thomas     struct got_repository *repo, struct got_object_id *id, size_t blocksize,
613 3efd8e31 2022-10-23 thomas     int outfd)
614 3efd8e31 2022-10-23 thomas {
615 3efd8e31 2022-10-23 thomas 	return got_error(GOT_ERR_NOT_IMPL);
616 3efd8e31 2022-10-23 thomas }
617 3efd8e31 2022-10-23 thomas 
618 3efd8e31 2022-10-23 thomas const struct got_error *
619 3efd8e31 2022-10-23 thomas got_object_blob_open(struct got_blob_object **blob,
620 3efd8e31 2022-10-23 thomas     struct got_repository *repo, struct got_object *obj, size_t blocksize,
621 3efd8e31 2022-10-23 thomas     int outfd)
622 3efd8e31 2022-10-23 thomas {
623 3efd8e31 2022-10-23 thomas 	return got_error(GOT_ERR_NOT_IMPL);
624 3efd8e31 2022-10-23 thomas }
625 3efd8e31 2022-10-23 thomas 
626 3efd8e31 2022-10-23 thomas static const struct got_error *
627 3efd8e31 2022-10-23 thomas open_tag(struct got_tag_object **tag, struct got_repository *repo,
628 3efd8e31 2022-10-23 thomas     struct got_object_id *id, int check_cache)
629 3efd8e31 2022-10-23 thomas {
630 3efd8e31 2022-10-23 thomas 	const struct got_error *err = NULL;
631 3efd8e31 2022-10-23 thomas 	struct got_packidx *packidx = NULL;
632 3efd8e31 2022-10-23 thomas 	int idx;
633 3efd8e31 2022-10-23 thomas 	char *path_packfile = NULL;
634 3efd8e31 2022-10-23 thomas 	struct got_object *obj = NULL;
635 3efd8e31 2022-10-23 thomas 	int obj_type = GOT_OBJ_TYPE_ANY;
636 3efd8e31 2022-10-23 thomas 
637 3efd8e31 2022-10-23 thomas 	if (check_cache) {
638 3efd8e31 2022-10-23 thomas 		*tag = got_repo_get_cached_tag(repo, id);
639 3efd8e31 2022-10-23 thomas 		if (*tag != NULL) {
640 3efd8e31 2022-10-23 thomas 			(*tag)->refcnt++;
641 3efd8e31 2022-10-23 thomas 			return NULL;
642 3efd8e31 2022-10-23 thomas 		}
643 3efd8e31 2022-10-23 thomas 	} else
644 3efd8e31 2022-10-23 thomas 		*tag = NULL;
645 3efd8e31 2022-10-23 thomas 
646 3efd8e31 2022-10-23 thomas 	err = got_repo_search_packidx(&packidx, &idx, repo, id);
647 3efd8e31 2022-10-23 thomas 	if (err == NULL) {
648 3efd8e31 2022-10-23 thomas 		struct got_pack *pack = NULL;
649 3efd8e31 2022-10-23 thomas 		uint8_t *buf = NULL;
650 3efd8e31 2022-10-23 thomas 		size_t len;
651 3efd8e31 2022-10-23 thomas 
652 3efd8e31 2022-10-23 thomas 		err = got_packidx_get_packfile_path(&path_packfile,
653 3efd8e31 2022-10-23 thomas 		    packidx->path_packidx);
654 3efd8e31 2022-10-23 thomas 		if (err)
655 3efd8e31 2022-10-23 thomas 			return err;
656 3efd8e31 2022-10-23 thomas 
657 3efd8e31 2022-10-23 thomas 		pack = got_repo_get_cached_pack(repo, path_packfile);
658 3efd8e31 2022-10-23 thomas 		if (pack == NULL) {
659 3efd8e31 2022-10-23 thomas 			err = got_repo_cache_pack(&pack, repo, path_packfile,
660 3efd8e31 2022-10-23 thomas 			    packidx);
661 3efd8e31 2022-10-23 thomas 			if (err)
662 3efd8e31 2022-10-23 thomas 				goto done;
663 3efd8e31 2022-10-23 thomas 		}
664 3efd8e31 2022-10-23 thomas 
665 3efd8e31 2022-10-23 thomas 		/* Beware of "lightweight" tags: Check object type first. */
666 3efd8e31 2022-10-23 thomas 		err = got_packfile_open_object(&obj, pack, packidx, idx, id);
667 3efd8e31 2022-10-23 thomas 		if (err)
668 3efd8e31 2022-10-23 thomas 			goto done;
669 3efd8e31 2022-10-23 thomas 		obj_type = obj->type;
670 3efd8e31 2022-10-23 thomas 		if (obj_type != GOT_OBJ_TYPE_TAG) {
671 3efd8e31 2022-10-23 thomas 			err = got_error(GOT_ERR_OBJ_TYPE);
672 3efd8e31 2022-10-23 thomas 			got_object_close(obj);
673 3efd8e31 2022-10-23 thomas 			goto done;
674 3efd8e31 2022-10-23 thomas 		}
675 3efd8e31 2022-10-23 thomas 		err = got_packfile_extract_object_to_mem(&buf, &len,
676 3efd8e31 2022-10-23 thomas 		    obj, pack);
677 3efd8e31 2022-10-23 thomas 		got_object_close(obj);
678 3efd8e31 2022-10-23 thomas 		if (err)
679 3efd8e31 2022-10-23 thomas 			goto done;
680 3efd8e31 2022-10-23 thomas 		err = got_object_parse_tag(tag, buf, len);
681 3efd8e31 2022-10-23 thomas 		free(buf);
682 3efd8e31 2022-10-23 thomas 	} else if (err->code == GOT_ERR_NO_OBJ) {
683 3efd8e31 2022-10-23 thomas 		int fd;
684 3efd8e31 2022-10-23 thomas 
685 3efd8e31 2022-10-23 thomas 		err = got_object_open_loose_fd(&fd, id, repo);
686 3efd8e31 2022-10-23 thomas 		if (err)
687 3efd8e31 2022-10-23 thomas 			return err;
688 3efd8e31 2022-10-23 thomas 		err = got_object_read_header(&obj, fd);
689 3efd8e31 2022-10-23 thomas 		if (close(fd) == -1 && err == NULL)
690 3efd8e31 2022-10-23 thomas 			err = got_error_from_errno("close");
691 3efd8e31 2022-10-23 thomas 		if (err)
692 3efd8e31 2022-10-23 thomas 			return err;
693 3efd8e31 2022-10-23 thomas 		obj_type = obj->type;
694 3efd8e31 2022-10-23 thomas 		got_object_close(obj);
695 3efd8e31 2022-10-23 thomas 		if (obj_type != GOT_OBJ_TYPE_TAG)
696 3efd8e31 2022-10-23 thomas 			return got_error(GOT_ERR_OBJ_TYPE);
697 3efd8e31 2022-10-23 thomas 
698 3efd8e31 2022-10-23 thomas 		err = got_object_open_loose_fd(&fd, id, repo);
699 3efd8e31 2022-10-23 thomas 		if (err)
700 3efd8e31 2022-10-23 thomas 			return err;
701 3efd8e31 2022-10-23 thomas 		err = got_object_read_tag(tag, fd, id, 0);
702 3efd8e31 2022-10-23 thomas 		if (close(fd) == -1 && err == NULL)
703 3efd8e31 2022-10-23 thomas 			err = got_error_from_errno("close");
704 3efd8e31 2022-10-23 thomas 		if (err)
705 3efd8e31 2022-10-23 thomas 			return err;
706 3efd8e31 2022-10-23 thomas 	}
707 3efd8e31 2022-10-23 thomas 
708 3efd8e31 2022-10-23 thomas 	if (err == NULL) {
709 3efd8e31 2022-10-23 thomas 		(*tag)->refcnt++;
710 3efd8e31 2022-10-23 thomas 		err = got_repo_cache_tag(repo, id, *tag);
711 3efd8e31 2022-10-23 thomas 		if (err) {
712 3efd8e31 2022-10-23 thomas 			if (err->code == GOT_ERR_OBJ_EXISTS ||
713 3efd8e31 2022-10-23 thomas 			    err->code == GOT_ERR_OBJ_TOO_LARGE)
714 3efd8e31 2022-10-23 thomas 				err = NULL;
715 3efd8e31 2022-10-23 thomas 		}
716 3efd8e31 2022-10-23 thomas 	}
717 3efd8e31 2022-10-23 thomas done:
718 3efd8e31 2022-10-23 thomas 	free(path_packfile);
719 3efd8e31 2022-10-23 thomas 	return err;
720 3efd8e31 2022-10-23 thomas }
721 3efd8e31 2022-10-23 thomas 
722 3efd8e31 2022-10-23 thomas const struct got_error *
723 3efd8e31 2022-10-23 thomas got_object_open_as_tag(struct got_tag_object **tag,
724 3efd8e31 2022-10-23 thomas     struct got_repository *repo, struct got_object_id *id)
725 3efd8e31 2022-10-23 thomas {
726 3efd8e31 2022-10-23 thomas 	*tag = got_repo_get_cached_tag(repo, id);
727 3efd8e31 2022-10-23 thomas 	if (*tag != NULL) {
728 3efd8e31 2022-10-23 thomas 		(*tag)->refcnt++;
729 3efd8e31 2022-10-23 thomas 		return NULL;
730 3efd8e31 2022-10-23 thomas 	}
731 3efd8e31 2022-10-23 thomas 
732 3efd8e31 2022-10-23 thomas 	return open_tag(tag, repo, id, 0);
733 3efd8e31 2022-10-23 thomas }
734 3efd8e31 2022-10-23 thomas 
735 3efd8e31 2022-10-23 thomas const struct got_error *
736 3efd8e31 2022-10-23 thomas got_object_tag_open(struct got_tag_object **tag,
737 3efd8e31 2022-10-23 thomas     struct got_repository *repo, struct got_object *obj)
738 3efd8e31 2022-10-23 thomas {
739 3efd8e31 2022-10-23 thomas 	return open_tag(tag, repo, got_object_get_id(obj), 1);
740 3efd8e31 2022-10-23 thomas }