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 3efd8e31 2022-10-23 thomas 
 17 3efd8e31 2022-10-23 thomas #include <sys/queue.h>
 18 3efd8e31 2022-10-23 thomas #include <sys/stat.h>
 19 3efd8e31 2022-10-23 thomas 
 20 3efd8e31 2022-10-23 thomas #include <errno.h>
 21 3efd8e31 2022-10-23 thomas #include <limits.h>
 22 3efd8e31 2022-10-23 thomas #include <stdio.h>
 23 3efd8e31 2022-10-23 thomas #include <stdlib.h>
 24 3efd8e31 2022-10-23 thomas #include <string.h>
 25 3efd8e31 2022-10-23 thomas #include <unistd.h>
 26 3efd8e31 2022-10-23 thomas 
 27 3efd8e31 2022-10-23 thomas #include "got_error.h"
 28 3efd8e31 2022-10-23 thomas #include "got_object.h"
 29 3efd8e31 2022-10-23 thomas #include "got_repository.h"
 30 3efd8e31 2022-10-23 thomas #include "got_path.h"
 31 3efd8e31 2022-10-23 thomas 
 32 3efd8e31 2022-10-23 thomas #include "got_lib_delta.h"
 33 3efd8e31 2022-10-23 thomas #include "got_lib_object.h"
 34 3efd8e31 2022-10-23 thomas #include "got_lib_object_cache.h"
 35 3efd8e31 2022-10-23 thomas #include "got_lib_object_parse.h"
 36 3efd8e31 2022-10-23 thomas #include "got_lib_pack.h"
 37 3efd8e31 2022-10-23 thomas #include "got_lib_repository.h"
 38 3efd8e31 2022-10-23 thomas 
 39 3efd8e31 2022-10-23 thomas const struct got_error *
 40 3efd8e31 2022-10-23 thomas got_object_open_packed(struct got_object **obj, struct got_object_id *id,
 41 3efd8e31 2022-10-23 thomas     struct got_repository *repo)
 42 3efd8e31 2022-10-23 thomas {
 43 3efd8e31 2022-10-23 thomas 	const struct got_error *err = NULL;
 44 3efd8e31 2022-10-23 thomas 	struct got_pack *pack = NULL;
 45 3efd8e31 2022-10-23 thomas 	struct got_packidx *packidx = NULL;
 46 3efd8e31 2022-10-23 thomas 	int idx;
 47 3efd8e31 2022-10-23 thomas 	char *path_packfile;
 48 3efd8e31 2022-10-23 thomas 
 49 3efd8e31 2022-10-23 thomas 	err = got_repo_search_packidx(&packidx, &idx, repo, id);
 50 3efd8e31 2022-10-23 thomas 	if (err)
 51 3efd8e31 2022-10-23 thomas 		return err;
 52 3efd8e31 2022-10-23 thomas 
 53 3efd8e31 2022-10-23 thomas 	err = got_packidx_get_packfile_path(&path_packfile,
 54 3efd8e31 2022-10-23 thomas 	    packidx->path_packidx);
 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 	pack = got_repo_get_cached_pack(repo, path_packfile);
 59 3efd8e31 2022-10-23 thomas 	if (pack == NULL) {
 60 3efd8e31 2022-10-23 thomas 		err = got_repo_cache_pack(&pack, repo, path_packfile, packidx);
 61 3efd8e31 2022-10-23 thomas 		if (err)
 62 3efd8e31 2022-10-23 thomas 			goto done;
 63 3efd8e31 2022-10-23 thomas 	}
 64 3efd8e31 2022-10-23 thomas 
 65 3efd8e31 2022-10-23 thomas 	err = got_packfile_open_object(obj, pack, packidx, idx, id);
 66 3efd8e31 2022-10-23 thomas 	if (err)
 67 3efd8e31 2022-10-23 thomas 		return err;
 68 3efd8e31 2022-10-23 thomas 	(*obj)->refcnt++;
 69 3efd8e31 2022-10-23 thomas 
 70 3efd8e31 2022-10-23 thomas 	err = got_repo_cache_object(repo, id, *obj);
 71 3efd8e31 2022-10-23 thomas 	if (err) {
 72 3efd8e31 2022-10-23 thomas 		if (err->code == GOT_ERR_OBJ_EXISTS ||
 73 3efd8e31 2022-10-23 thomas 		    err->code == GOT_ERR_OBJ_TOO_LARGE)
 74 3efd8e31 2022-10-23 thomas 			err = NULL;
 75 3efd8e31 2022-10-23 thomas 	}
 76 3efd8e31 2022-10-23 thomas done:
 77 3efd8e31 2022-10-23 thomas 	free(path_packfile);
 78 3efd8e31 2022-10-23 thomas 	return err;
 79 3efd8e31 2022-10-23 thomas }
 80 3efd8e31 2022-10-23 thomas 
 81 3efd8e31 2022-10-23 thomas const struct got_error *
 82 3efd8e31 2022-10-23 thomas got_object_open_from_packfile(struct got_object **obj, struct got_object_id *id,
 83 3efd8e31 2022-10-23 thomas     struct got_pack *pack, struct got_packidx *packidx, int obj_idx,
 84 3efd8e31 2022-10-23 thomas     struct got_repository *repo)
 85 3efd8e31 2022-10-23 thomas {
 86 3efd8e31 2022-10-23 thomas 	return got_error(GOT_ERR_NOT_IMPL);
 87 3efd8e31 2022-10-23 thomas }
 88 3efd8e31 2022-10-23 thomas 
 89 3efd8e31 2022-10-23 thomas const struct got_error *
 90 3efd8e31 2022-10-23 thomas got_object_read_raw_delta(uint64_t *base_size, uint64_t *result_size,
 91 3efd8e31 2022-10-23 thomas     off_t *delta_size, off_t *delta_compressed_size, off_t *delta_offset,
 92 3efd8e31 2022-10-23 thomas     off_t *delta_out_offset, struct got_object_id **base_id, int delta_cache_fd,
 93 3efd8e31 2022-10-23 thomas     struct got_packidx *packidx, int obj_idx, struct got_object_id *id,
 94 3efd8e31 2022-10-23 thomas     struct got_repository *repo)
 95 3efd8e31 2022-10-23 thomas {
 96 3efd8e31 2022-10-23 thomas 	return got_error(GOT_ERR_NOT_IMPL);
 97 3efd8e31 2022-10-23 thomas }
 98 3efd8e31 2022-10-23 thomas 
 99 3efd8e31 2022-10-23 thomas const struct got_error *
100 3efd8e31 2022-10-23 thomas got_object_open(struct got_object **obj, struct got_repository *repo,
101 3efd8e31 2022-10-23 thomas     struct got_object_id *id)
102 3efd8e31 2022-10-23 thomas {
103 3efd8e31 2022-10-23 thomas 	const struct got_error *err = NULL;
104 3efd8e31 2022-10-23 thomas 	int fd;
105 3efd8e31 2022-10-23 thomas 
106 3efd8e31 2022-10-23 thomas 	*obj = got_repo_get_cached_object(repo, id);
107 3efd8e31 2022-10-23 thomas 	if (*obj != NULL) {
108 3efd8e31 2022-10-23 thomas 		(*obj)->refcnt++;
109 3efd8e31 2022-10-23 thomas 		return NULL;
110 3efd8e31 2022-10-23 thomas 	}
111 3efd8e31 2022-10-23 thomas 
112 3efd8e31 2022-10-23 thomas 	err = got_object_open_packed(obj, id, repo);
113 3efd8e31 2022-10-23 thomas 	if (err) {
114 3efd8e31 2022-10-23 thomas 		if (err->code != GOT_ERR_NO_OBJ)
115 3efd8e31 2022-10-23 thomas 			return err;
116 3efd8e31 2022-10-23 thomas 	} else
117 3efd8e31 2022-10-23 thomas 		return NULL;
118 3efd8e31 2022-10-23 thomas 
119 3efd8e31 2022-10-23 thomas 	err = got_object_open_loose_fd(&fd, id, repo);
120 3efd8e31 2022-10-23 thomas 	if (err) {
121 3efd8e31 2022-10-23 thomas 		if (err->code == GOT_ERR_ERRNO && errno == ENOENT)
122 3efd8e31 2022-10-23 thomas 			err = got_error_no_obj(id);
123 3efd8e31 2022-10-23 thomas 		return err;
124 3efd8e31 2022-10-23 thomas 	}
125 3efd8e31 2022-10-23 thomas 
126 3efd8e31 2022-10-23 thomas 	err = got_object_read_header(obj, fd);
127 3efd8e31 2022-10-23 thomas 	if (err)
128 3efd8e31 2022-10-23 thomas 		goto done;
129 3efd8e31 2022-10-23 thomas 
130 3efd8e31 2022-10-23 thomas 	memcpy(&(*obj)->id, id, sizeof((*obj)->id));
131 3efd8e31 2022-10-23 thomas 	(*obj)->refcnt++;
132 3efd8e31 2022-10-23 thomas 
133 3efd8e31 2022-10-23 thomas 	err = got_repo_cache_object(repo, id, *obj);
134 3efd8e31 2022-10-23 thomas 	if (err) {
135 3efd8e31 2022-10-23 thomas 		if (err->code == GOT_ERR_OBJ_EXISTS ||
136 3efd8e31 2022-10-23 thomas 		    err->code == GOT_ERR_OBJ_TOO_LARGE)
137 3efd8e31 2022-10-23 thomas 			err = NULL;
138 3efd8e31 2022-10-23 thomas 	}
139 3efd8e31 2022-10-23 thomas done:
140 3efd8e31 2022-10-23 thomas 	if (close(fd) == -1 && err == NULL)
141 3efd8e31 2022-10-23 thomas 		err = got_error_from_errno("close");
142 3efd8e31 2022-10-23 thomas 	return err;
143 3efd8e31 2022-10-23 thomas }
144 3efd8e31 2022-10-23 thomas 
145 3efd8e31 2022-10-23 thomas static const struct got_error *
146 3efd8e31 2022-10-23 thomas wrap_fd(FILE **f, int wrapped_fd)
147 3efd8e31 2022-10-23 thomas {
148 3efd8e31 2022-10-23 thomas 	const struct got_error *err = NULL;
149 3efd8e31 2022-10-23 thomas 	int fd;
150 3efd8e31 2022-10-23 thomas 
151 3efd8e31 2022-10-23 thomas 	if (ftruncate(wrapped_fd, 0L) == -1)
152 3efd8e31 2022-10-23 thomas 		return got_error_from_errno("ftruncate");
153 3efd8e31 2022-10-23 thomas 
154 3efd8e31 2022-10-23 thomas 	if (lseek(wrapped_fd, 0L, SEEK_SET) == -1)
155 3efd8e31 2022-10-23 thomas 		return got_error_from_errno("lseek");
156 3efd8e31 2022-10-23 thomas 
157 3efd8e31 2022-10-23 thomas 	fd = dup(wrapped_fd);
158 3efd8e31 2022-10-23 thomas 	if (fd == -1)
159 3efd8e31 2022-10-23 thomas 		return got_error_from_errno("dup");
160 3efd8e31 2022-10-23 thomas 
161 3efd8e31 2022-10-23 thomas 	*f = fdopen(fd, "w+");
162 3efd8e31 2022-10-23 thomas 	if (*f == NULL) {
163 3efd8e31 2022-10-23 thomas 		err = got_error_from_errno("fdopen");
164 3efd8e31 2022-10-23 thomas 		close(fd);
165 3efd8e31 2022-10-23 thomas 	}
166 3efd8e31 2022-10-23 thomas 	return err;
167 3efd8e31 2022-10-23 thomas }
168 3efd8e31 2022-10-23 thomas 
169 3efd8e31 2022-10-23 thomas static const struct got_error *
170 3efd8e31 2022-10-23 thomas read_packed_object_raw(uint8_t **outbuf, off_t *size, size_t *hdrlen,
171 3efd8e31 2022-10-23 thomas     int outfd, struct got_pack *pack, struct got_packidx *packidx, int idx,
172 3efd8e31 2022-10-23 thomas     struct got_object_id *id)
173 3efd8e31 2022-10-23 thomas {
174 3efd8e31 2022-10-23 thomas 	const struct got_error *err = NULL;
175 3efd8e31 2022-10-23 thomas 	uint64_t raw_size = 0;
176 3efd8e31 2022-10-23 thomas 	struct got_object *obj;
177 3efd8e31 2022-10-23 thomas 	FILE *outfile = NULL, *basefile = NULL, *accumfile = NULL;
178 3efd8e31 2022-10-23 thomas 
179 3efd8e31 2022-10-23 thomas 	*outbuf = NULL;
180 3efd8e31 2022-10-23 thomas 	*size = 0;
181 3efd8e31 2022-10-23 thomas 	*hdrlen = 0;
182 3efd8e31 2022-10-23 thomas 
183 3efd8e31 2022-10-23 thomas 	err = got_packfile_open_object(&obj, pack, packidx, idx, id);
184 3efd8e31 2022-10-23 thomas 	if (err)
185 3efd8e31 2022-10-23 thomas 		return err;
186 3efd8e31 2022-10-23 thomas 
187 3efd8e31 2022-10-23 thomas 	if (obj->flags & GOT_OBJ_FLAG_DELTIFIED) {
188 3efd8e31 2022-10-23 thomas 		err = got_pack_get_max_delta_object_size(&raw_size, obj, pack);
189 3efd8e31 2022-10-23 thomas 		if (err)
190 3efd8e31 2022-10-23 thomas 			goto done;
191 3efd8e31 2022-10-23 thomas 	} else
192 3efd8e31 2022-10-23 thomas 		raw_size = obj->size;
193 3efd8e31 2022-10-23 thomas 
194 3efd8e31 2022-10-23 thomas 	if (raw_size <= GOT_DELTA_RESULT_SIZE_CACHED_MAX) {
195 3efd8e31 2022-10-23 thomas 		size_t len;
196 3efd8e31 2022-10-23 thomas 		err = got_packfile_extract_object_to_mem(outbuf, &len,
197 3efd8e31 2022-10-23 thomas 		    obj, pack);
198 3efd8e31 2022-10-23 thomas 		if (err)
199 3efd8e31 2022-10-23 thomas 			goto done;
200 3efd8e31 2022-10-23 thomas 		*size = (off_t)len;
201 3efd8e31 2022-10-23 thomas 	} else {
202 3efd8e31 2022-10-23 thomas 		/*
203 3efd8e31 2022-10-23 thomas 		 * XXX This uses 3 file extra descriptors for no good reason.
204 3efd8e31 2022-10-23 thomas 		 * We should have got_packfile_extract_object_to_fd().
205 3efd8e31 2022-10-23 thomas 		 */
206 3efd8e31 2022-10-23 thomas 		err = wrap_fd(&outfile, outfd);
207 3efd8e31 2022-10-23 thomas 		if (err)
208 3efd8e31 2022-10-23 thomas 			goto done;
209 3efd8e31 2022-10-23 thomas 		err = wrap_fd(&basefile, pack->basefd);
210 3efd8e31 2022-10-23 thomas 		if (err)
211 3efd8e31 2022-10-23 thomas 			goto done;
212 3efd8e31 2022-10-23 thomas 		err = wrap_fd(&accumfile, pack->accumfd);
213 3efd8e31 2022-10-23 thomas 		if (err)
214 3efd8e31 2022-10-23 thomas 			goto done;
215 3efd8e31 2022-10-23 thomas 		err = got_packfile_extract_object(pack, obj, outfile, basefile,
216 3efd8e31 2022-10-23 thomas 		    accumfile);
217 3efd8e31 2022-10-23 thomas 		if (err)
218 3efd8e31 2022-10-23 thomas 			goto done;
219 b296ac1c 2023-01-09 thomas 		*size = obj->size;
220 3efd8e31 2022-10-23 thomas 	}
221 3efd8e31 2022-10-23 thomas 
222 3efd8e31 2022-10-23 thomas 	*hdrlen = obj->hdrlen;
223 3efd8e31 2022-10-23 thomas done:
224 3efd8e31 2022-10-23 thomas 	got_object_close(obj);
225 3efd8e31 2022-10-23 thomas 	if (outfile && fclose(outfile) == EOF && err == NULL)
226 3efd8e31 2022-10-23 thomas 		err = got_error_from_errno("fclose");
227 3efd8e31 2022-10-23 thomas 	if (basefile && fclose(basefile) == EOF && err == NULL)
228 3efd8e31 2022-10-23 thomas 		err = got_error_from_errno("fclose");
229 3efd8e31 2022-10-23 thomas 	if (accumfile && fclose(accumfile) == EOF && err == NULL)
230 3efd8e31 2022-10-23 thomas 		err = got_error_from_errno("fclose");
231 3efd8e31 2022-10-23 thomas 	return err;
232 3efd8e31 2022-10-23 thomas 
233 3efd8e31 2022-10-23 thomas }
234 3efd8e31 2022-10-23 thomas 
235 3efd8e31 2022-10-23 thomas static void
236 3efd8e31 2022-10-23 thomas put_raw_object_tempfile(struct got_raw_object *obj)
237 3efd8e31 2022-10-23 thomas {
238 3efd8e31 2022-10-23 thomas 	struct got_repository *repo = obj->close_arg;
239 3efd8e31 2022-10-23 thomas 
240 3efd8e31 2022-10-23 thomas 	if (obj->tempfile_idx != -1)
241 3efd8e31 2022-10-23 thomas 		got_repo_temp_fds_put(obj->tempfile_idx, repo);
242 3efd8e31 2022-10-23 thomas }
243 3efd8e31 2022-10-23 thomas 
244 3efd8e31 2022-10-23 thomas /* *outfd must be initialized to -1 by caller */
245 3efd8e31 2022-10-23 thomas const struct got_error *
246 3efd8e31 2022-10-23 thomas got_object_raw_open(struct got_raw_object **obj, int *outfd,
247 3efd8e31 2022-10-23 thomas     struct got_repository *repo, struct got_object_id *id)
248 3efd8e31 2022-10-23 thomas {
249 3efd8e31 2022-10-23 thomas 	const struct got_error *err = NULL;
250 3efd8e31 2022-10-23 thomas 	struct got_packidx *packidx = NULL;
251 ab9f7b87 2023-01-09 thomas 	int idx, tempfd, tempfile_idx;
252 3efd8e31 2022-10-23 thomas 	uint8_t *outbuf = NULL;
253 3efd8e31 2022-10-23 thomas 	off_t size = 0;
254 3efd8e31 2022-10-23 thomas 	size_t hdrlen = 0;
255 3efd8e31 2022-10-23 thomas 	char *path_packfile = NULL;
256 3efd8e31 2022-10-23 thomas 
257 3efd8e31 2022-10-23 thomas 	*obj = got_repo_get_cached_raw_object(repo, id);
258 3efd8e31 2022-10-23 thomas 	if (*obj != NULL) {
259 3efd8e31 2022-10-23 thomas 		(*obj)->refcnt++;
260 3efd8e31 2022-10-23 thomas 		return NULL;
261 3efd8e31 2022-10-23 thomas 	}
262 3efd8e31 2022-10-23 thomas 
263 ab9f7b87 2023-01-09 thomas 	err = got_repo_temp_fds_get(&tempfd, &tempfile_idx, repo);
264 ab9f7b87 2023-01-09 thomas 	if (err)
265 ab9f7b87 2023-01-09 thomas 		return err;
266 3efd8e31 2022-10-23 thomas 
267 3efd8e31 2022-10-23 thomas 	err = got_repo_search_packidx(&packidx, &idx, repo, id);
268 3efd8e31 2022-10-23 thomas 	if (err == NULL) {
269 3efd8e31 2022-10-23 thomas 		struct got_pack *pack = NULL;
270 3efd8e31 2022-10-23 thomas 
271 3efd8e31 2022-10-23 thomas 		err = got_packidx_get_packfile_path(&path_packfile,
272 3efd8e31 2022-10-23 thomas 		    packidx->path_packidx);
273 3efd8e31 2022-10-23 thomas 		if (err)
274 3efd8e31 2022-10-23 thomas 			goto done;
275 3efd8e31 2022-10-23 thomas 
276 3efd8e31 2022-10-23 thomas 		pack = got_repo_get_cached_pack(repo, path_packfile);
277 3efd8e31 2022-10-23 thomas 		if (pack == NULL) {
278 3efd8e31 2022-10-23 thomas 			err = got_repo_cache_pack(&pack, repo, path_packfile,
279 3efd8e31 2022-10-23 thomas 			    packidx);
280 3efd8e31 2022-10-23 thomas 			if (err)
281 3efd8e31 2022-10-23 thomas 				goto done;
282 3efd8e31 2022-10-23 thomas 		}
283 3efd8e31 2022-10-23 thomas 		err = read_packed_object_raw(&outbuf, &size, &hdrlen,
284 ab9f7b87 2023-01-09 thomas 		    tempfd, pack, packidx, idx, id);
285 3efd8e31 2022-10-23 thomas 		if (err)
286 3efd8e31 2022-10-23 thomas 			goto done;
287 3efd8e31 2022-10-23 thomas 	} else if (err->code == GOT_ERR_NO_OBJ) {
288 3efd8e31 2022-10-23 thomas 		int fd;
289 3efd8e31 2022-10-23 thomas 
290 3efd8e31 2022-10-23 thomas 		err = got_object_open_loose_fd(&fd, id, repo);
291 3efd8e31 2022-10-23 thomas 		if (err)
292 3efd8e31 2022-10-23 thomas 			goto done;
293 3efd8e31 2022-10-23 thomas 		err = got_object_read_raw(&outbuf, &size, &hdrlen,
294 ab9f7b87 2023-01-09 thomas 		    GOT_DELTA_RESULT_SIZE_CACHED_MAX, tempfd, id, fd);
295 3efd8e31 2022-10-23 thomas 		if (close(fd) == -1 && err == NULL)
296 3efd8e31 2022-10-23 thomas 			err = got_error_from_errno("close");
297 3efd8e31 2022-10-23 thomas 		if (err)
298 ab9f7b87 2023-01-09 thomas 			goto done;
299 ab9f7b87 2023-01-09 thomas 	}
300 ab9f7b87 2023-01-09 thomas 
301 ab9f7b87 2023-01-09 thomas 	if (outbuf == NULL) {
302 ab9f7b87 2023-01-09 thomas 		if (*outfd != -1) {
303 ab9f7b87 2023-01-09 thomas 			err = got_error_msg(GOT_ERR_NOT_IMPL, "bad outfd");
304 ab9f7b87 2023-01-09 thomas 			goto done;
305 ab9f7b87 2023-01-09 thomas 		}
306 ab9f7b87 2023-01-09 thomas 
307 ab9f7b87 2023-01-09 thomas 		/*
308 ab9f7b87 2023-01-09 thomas 		 * Duplicate tempfile descriptor to allow use of
309 ab9f7b87 2023-01-09 thomas 		 * fdopen(3) inside got_object_raw_alloc().
310 ab9f7b87 2023-01-09 thomas 		 */
311 ab9f7b87 2023-01-09 thomas 		*outfd = dup(tempfd);
312 ab9f7b87 2023-01-09 thomas 		if (*outfd == -1) {
313 ab9f7b87 2023-01-09 thomas 			err = got_error_from_errno("dup");
314 3efd8e31 2022-10-23 thomas 			goto done;
315 ab9f7b87 2023-01-09 thomas 		}
316 3efd8e31 2022-10-23 thomas 	}
317 3efd8e31 2022-10-23 thomas 
318 ebe6ec92 2023-01-09 thomas 	err = got_object_raw_alloc(obj, outbuf, outfd,
319 ebe6ec92 2023-01-09 thomas 	    GOT_DELTA_RESULT_SIZE_CACHED_MAX, hdrlen, size);
320 3efd8e31 2022-10-23 thomas 	if (err)
321 3efd8e31 2022-10-23 thomas 		goto done;
322 3efd8e31 2022-10-23 thomas 
323 3efd8e31 2022-10-23 thomas 	err = got_repo_cache_raw_object(repo, id, *obj);
324 3efd8e31 2022-10-23 thomas 	if (err) {
325 3efd8e31 2022-10-23 thomas 		if (err->code == GOT_ERR_OBJ_EXISTS ||
326 3efd8e31 2022-10-23 thomas 		    err->code == GOT_ERR_OBJ_TOO_LARGE)
327 3efd8e31 2022-10-23 thomas 			err = NULL;
328 3efd8e31 2022-10-23 thomas 	}
329 3efd8e31 2022-10-23 thomas done:
330 3efd8e31 2022-10-23 thomas 	free(path_packfile);
331 3efd8e31 2022-10-23 thomas 	if (err) {
332 3efd8e31 2022-10-23 thomas 		if (*obj) {
333 3efd8e31 2022-10-23 thomas 			got_object_raw_close(*obj);
334 3efd8e31 2022-10-23 thomas 			*obj = NULL;
335 3efd8e31 2022-10-23 thomas 		}
336 3efd8e31 2022-10-23 thomas 		free(outbuf);
337 ab9f7b87 2023-01-09 thomas 		got_repo_temp_fds_put(tempfile_idx, repo);
338 ab9f7b87 2023-01-09 thomas 		if (*outfd != -1) {
339 ab9f7b87 2023-01-09 thomas 			close(*outfd);
340 ab9f7b87 2023-01-09 thomas 			*outfd = -1;
341 ab9f7b87 2023-01-09 thomas 		}
342 3efd8e31 2022-10-23 thomas 	} else {
343 ab9f7b87 2023-01-09 thomas 		if (((*obj)->f == NULL && (*obj)->fd == -1)) {
344 ab9f7b87 2023-01-09 thomas 			/* This raw object is not backed by a file. */
345 ab9f7b87 2023-01-09 thomas 			got_repo_temp_fds_put(tempfile_idx, repo);
346 ab9f7b87 2023-01-09 thomas 			if (*outfd != -1) {
347 ab9f7b87 2023-01-09 thomas 				close(*outfd);
348 ab9f7b87 2023-01-09 thomas 				*outfd = -1;
349 ab9f7b87 2023-01-09 thomas 			}
350 ab9f7b87 2023-01-09 thomas 		} else {
351 ab9f7b87 2023-01-09 thomas 			(*obj)->tempfile_idx = tempfile_idx;
352 ab9f7b87 2023-01-09 thomas 			(*obj)->close_cb = put_raw_object_tempfile;
353 ab9f7b87 2023-01-09 thomas 			(*obj)->close_arg = repo;
354 ab9f7b87 2023-01-09 thomas 		}
355 3efd8e31 2022-10-23 thomas 	}
356 3efd8e31 2022-10-23 thomas 	return err;
357 3efd8e31 2022-10-23 thomas }
358 3efd8e31 2022-10-23 thomas 
359 3efd8e31 2022-10-23 thomas static const struct got_error *
360 3efd8e31 2022-10-23 thomas open_commit(struct got_commit_object **commit,
361 3efd8e31 2022-10-23 thomas     struct got_repository *repo, struct got_object_id *id, int check_cache)
362 3efd8e31 2022-10-23 thomas {
363 3efd8e31 2022-10-23 thomas 	const struct got_error *err = NULL;
364 3efd8e31 2022-10-23 thomas 	struct got_packidx *packidx = NULL;
365 3efd8e31 2022-10-23 thomas 	int idx;
366 3efd8e31 2022-10-23 thomas 	char *path_packfile = NULL;
367 3efd8e31 2022-10-23 thomas 
368 3efd8e31 2022-10-23 thomas 	if (check_cache) {
369 3efd8e31 2022-10-23 thomas 		*commit = got_repo_get_cached_commit(repo, id);
370 3efd8e31 2022-10-23 thomas 		if (*commit != NULL) {
371 3efd8e31 2022-10-23 thomas 			(*commit)->refcnt++;
372 3efd8e31 2022-10-23 thomas 			return NULL;
373 3efd8e31 2022-10-23 thomas 		}
374 3efd8e31 2022-10-23 thomas 	} else
375 3efd8e31 2022-10-23 thomas 		*commit = NULL;
376 3efd8e31 2022-10-23 thomas 
377 3efd8e31 2022-10-23 thomas 	err = got_repo_search_packidx(&packidx, &idx, repo, id);
378 3efd8e31 2022-10-23 thomas 	if (err == NULL) {
379 3efd8e31 2022-10-23 thomas 		struct got_pack *pack = NULL;
380 3efd8e31 2022-10-23 thomas 		struct got_object *obj;
381 3efd8e31 2022-10-23 thomas 		uint8_t *buf;
382 3efd8e31 2022-10-23 thomas 		size_t len;
383 3efd8e31 2022-10-23 thomas 
384 3efd8e31 2022-10-23 thomas 		err = got_packidx_get_packfile_path(&path_packfile,
385 3efd8e31 2022-10-23 thomas 		    packidx->path_packidx);
386 3efd8e31 2022-10-23 thomas 		if (err)
387 3efd8e31 2022-10-23 thomas 			return err;
388 3efd8e31 2022-10-23 thomas 
389 3efd8e31 2022-10-23 thomas 		pack = got_repo_get_cached_pack(repo, path_packfile);
390 3efd8e31 2022-10-23 thomas 		if (pack == NULL) {
391 3efd8e31 2022-10-23 thomas 			err = got_repo_cache_pack(&pack, repo, path_packfile,
392 3efd8e31 2022-10-23 thomas 			    packidx);
393 3efd8e31 2022-10-23 thomas 			if (err)
394 3efd8e31 2022-10-23 thomas 				goto done;
395 3efd8e31 2022-10-23 thomas 		}
396 3efd8e31 2022-10-23 thomas 		err = got_packfile_open_object(&obj, pack, packidx, idx, id);
397 3efd8e31 2022-10-23 thomas 		if (err)
398 3efd8e31 2022-10-23 thomas 			goto done;
399 3efd8e31 2022-10-23 thomas 		err = got_packfile_extract_object_to_mem(&buf, &len,
400 3efd8e31 2022-10-23 thomas 		    obj, pack);
401 3efd8e31 2022-10-23 thomas 		got_object_close(obj);
402 3efd8e31 2022-10-23 thomas 		if (err)
403 3efd8e31 2022-10-23 thomas 			goto done;
404 3efd8e31 2022-10-23 thomas 		err = got_object_parse_commit(commit, buf, len);
405 3efd8e31 2022-10-23 thomas 		free(buf);
406 3efd8e31 2022-10-23 thomas 	} else if (err->code == GOT_ERR_NO_OBJ) {
407 3efd8e31 2022-10-23 thomas 		int fd;
408 3efd8e31 2022-10-23 thomas 
409 3efd8e31 2022-10-23 thomas 		err = got_object_open_loose_fd(&fd, id, repo);
410 3efd8e31 2022-10-23 thomas 		if (err)
411 3efd8e31 2022-10-23 thomas 			return err;
412 3efd8e31 2022-10-23 thomas 		err = got_object_read_commit(commit, fd, id, 0);
413 3efd8e31 2022-10-23 thomas 		if (close(fd) == -1 && err == NULL)
414 3efd8e31 2022-10-23 thomas 			err = got_error_from_errno("close");
415 3efd8e31 2022-10-23 thomas 		if (err)
416 3efd8e31 2022-10-23 thomas 			return err;
417 3efd8e31 2022-10-23 thomas 	}
418 3efd8e31 2022-10-23 thomas 
419 3efd8e31 2022-10-23 thomas 	if (err == NULL) {
420 3efd8e31 2022-10-23 thomas 		(*commit)->refcnt++;
421 3efd8e31 2022-10-23 thomas 		err = got_repo_cache_commit(repo, id, *commit);
422 3efd8e31 2022-10-23 thomas 		if (err) {
423 3efd8e31 2022-10-23 thomas 			if (err->code == GOT_ERR_OBJ_EXISTS ||
424 3efd8e31 2022-10-23 thomas 			    err->code == GOT_ERR_OBJ_TOO_LARGE)
425 3efd8e31 2022-10-23 thomas 				err = NULL;
426 3efd8e31 2022-10-23 thomas 		}
427 3efd8e31 2022-10-23 thomas 	}
428 3efd8e31 2022-10-23 thomas done:
429 3efd8e31 2022-10-23 thomas 	free(path_packfile);
430 3efd8e31 2022-10-23 thomas 	return err;
431 3efd8e31 2022-10-23 thomas }
432 3efd8e31 2022-10-23 thomas 
433 3efd8e31 2022-10-23 thomas const struct got_error *
434 3efd8e31 2022-10-23 thomas got_object_open_as_commit(struct got_commit_object **commit,
435 3efd8e31 2022-10-23 thomas     struct got_repository *repo, struct got_object_id *id)
436 3efd8e31 2022-10-23 thomas {
437 3efd8e31 2022-10-23 thomas 	*commit = got_repo_get_cached_commit(repo, id);
438 3efd8e31 2022-10-23 thomas 	if (*commit != NULL) {
439 3efd8e31 2022-10-23 thomas 		(*commit)->refcnt++;
440 3efd8e31 2022-10-23 thomas 		return NULL;
441 3efd8e31 2022-10-23 thomas 	}
442 3efd8e31 2022-10-23 thomas 
443 3efd8e31 2022-10-23 thomas 	return open_commit(commit, repo, id, 0);
444 3efd8e31 2022-10-23 thomas }
445 3efd8e31 2022-10-23 thomas 
446 3efd8e31 2022-10-23 thomas const struct got_error *
447 3efd8e31 2022-10-23 thomas got_object_commit_open(struct got_commit_object **commit,
448 3efd8e31 2022-10-23 thomas     struct got_repository *repo, struct got_object *obj)
449 3efd8e31 2022-10-23 thomas {
450 3efd8e31 2022-10-23 thomas 	return open_commit(commit, repo, got_object_get_id(obj), 1);
451 3efd8e31 2022-10-23 thomas }
452 3efd8e31 2022-10-23 thomas 
453 3efd8e31 2022-10-23 thomas static const struct got_error *
454 3efd8e31 2022-10-23 thomas open_tree(struct got_tree_object **tree,
455 3efd8e31 2022-10-23 thomas     struct got_repository *repo, struct got_object_id *id, int check_cache)
456 3efd8e31 2022-10-23 thomas {
457 3efd8e31 2022-10-23 thomas 	const struct got_error *err = NULL;
458 3efd8e31 2022-10-23 thomas 	struct got_packidx *packidx = NULL;
459 3efd8e31 2022-10-23 thomas 	int idx;
460 3efd8e31 2022-10-23 thomas 	char *path_packfile = NULL;
461 3efd8e31 2022-10-23 thomas 	struct got_parsed_tree_entry *entries = NULL;
462 3efd8e31 2022-10-23 thomas 	size_t nentries = 0, nentries_alloc = 0, i;
463 3efd8e31 2022-10-23 thomas 	uint8_t *buf = NULL;
464 3efd8e31 2022-10-23 thomas 
465 3efd8e31 2022-10-23 thomas 	if (check_cache) {
466 3efd8e31 2022-10-23 thomas 		*tree = got_repo_get_cached_tree(repo, id);
467 3efd8e31 2022-10-23 thomas 		if (*tree != NULL) {
468 3efd8e31 2022-10-23 thomas 			(*tree)->refcnt++;
469 3efd8e31 2022-10-23 thomas 			return NULL;
470 3efd8e31 2022-10-23 thomas 		}
471 3efd8e31 2022-10-23 thomas 	} else
472 3efd8e31 2022-10-23 thomas 		*tree = NULL;
473 3efd8e31 2022-10-23 thomas 
474 3efd8e31 2022-10-23 thomas 	err = got_repo_search_packidx(&packidx, &idx, repo, id);
475 3efd8e31 2022-10-23 thomas 	if (err == NULL) {
476 3efd8e31 2022-10-23 thomas 		struct got_pack *pack = NULL;
477 3efd8e31 2022-10-23 thomas 		struct got_object *obj;
478 3efd8e31 2022-10-23 thomas 		size_t len;
479 3efd8e31 2022-10-23 thomas 
480 3efd8e31 2022-10-23 thomas 		err = got_packidx_get_packfile_path(&path_packfile,
481 3efd8e31 2022-10-23 thomas 		    packidx->path_packidx);
482 3efd8e31 2022-10-23 thomas 		if (err)
483 3efd8e31 2022-10-23 thomas 			return err;
484 3efd8e31 2022-10-23 thomas 
485 3efd8e31 2022-10-23 thomas 		pack = got_repo_get_cached_pack(repo, path_packfile);
486 3efd8e31 2022-10-23 thomas 		if (pack == NULL) {
487 3efd8e31 2022-10-23 thomas 			err = got_repo_cache_pack(&pack, repo, path_packfile,
488 3efd8e31 2022-10-23 thomas 			    packidx);
489 3efd8e31 2022-10-23 thomas 			if (err)
490 3efd8e31 2022-10-23 thomas 				goto done;
491 3efd8e31 2022-10-23 thomas 		}
492 3efd8e31 2022-10-23 thomas 		err = got_packfile_open_object(&obj, pack, packidx, idx, id);
493 3efd8e31 2022-10-23 thomas 		if (err)
494 3efd8e31 2022-10-23 thomas 			goto done;
495 3efd8e31 2022-10-23 thomas 		err = got_packfile_extract_object_to_mem(&buf, &len,
496 3efd8e31 2022-10-23 thomas 		    obj, pack);
497 3efd8e31 2022-10-23 thomas 		got_object_close(obj);
498 3efd8e31 2022-10-23 thomas 		if (err)
499 3efd8e31 2022-10-23 thomas 			goto done;
500 3efd8e31 2022-10-23 thomas 		err = got_object_parse_tree(&entries, &nentries,
501 3efd8e31 2022-10-23 thomas 		    &nentries_alloc, buf, len);
502 3efd8e31 2022-10-23 thomas 		if (err)
503 3efd8e31 2022-10-23 thomas 			goto done;
504 3efd8e31 2022-10-23 thomas 	} else if (err->code == GOT_ERR_NO_OBJ) {
505 3efd8e31 2022-10-23 thomas 		int fd;
506 3efd8e31 2022-10-23 thomas 
507 3efd8e31 2022-10-23 thomas 		err = got_object_open_loose_fd(&fd, id, repo);
508 3efd8e31 2022-10-23 thomas 		if (err)
509 3efd8e31 2022-10-23 thomas 			return err;
510 3efd8e31 2022-10-23 thomas 		err = got_object_read_tree(&entries, &nentries,
511 3efd8e31 2022-10-23 thomas 		    &nentries_alloc, &buf, fd, id);
512 3efd8e31 2022-10-23 thomas 		if (close(fd) == -1 && err == NULL)
513 3efd8e31 2022-10-23 thomas 			err = got_error_from_errno("close");
514 3efd8e31 2022-10-23 thomas 		if (err)
515 3efd8e31 2022-10-23 thomas 			goto done;
516 3efd8e31 2022-10-23 thomas 	} else
517 3efd8e31 2022-10-23 thomas 		goto done;
518 3efd8e31 2022-10-23 thomas 
519 3efd8e31 2022-10-23 thomas 	*tree = malloc(sizeof(**tree));
520 3efd8e31 2022-10-23 thomas 	if (*tree == NULL) {
521 3efd8e31 2022-10-23 thomas 		err = got_error_from_errno("malloc");
522 3efd8e31 2022-10-23 thomas 		goto done;
523 3efd8e31 2022-10-23 thomas 	}
524 3efd8e31 2022-10-23 thomas 	(*tree)->entries = calloc(nentries, sizeof(struct got_tree_entry));
525 3efd8e31 2022-10-23 thomas 	if ((*tree)->entries == NULL) {
526 3efd8e31 2022-10-23 thomas 		err = got_error_from_errno("malloc");
527 3efd8e31 2022-10-23 thomas 		goto done;
528 3efd8e31 2022-10-23 thomas 	}
529 3efd8e31 2022-10-23 thomas 	(*tree)->nentries = nentries;
530 3efd8e31 2022-10-23 thomas 	(*tree)->refcnt = 0;
531 3efd8e31 2022-10-23 thomas 
532 3efd8e31 2022-10-23 thomas 	for (i = 0; i < nentries; i++) {
533 3efd8e31 2022-10-23 thomas 		struct got_parsed_tree_entry *pe = &entries[i];
534 3efd8e31 2022-10-23 thomas 		struct got_tree_entry *te = &(*tree)->entries[i];
535 3efd8e31 2022-10-23 thomas 	
536 3efd8e31 2022-10-23 thomas 		if (strlcpy(te->name, pe->name,
537 3efd8e31 2022-10-23 thomas 		    sizeof(te->name)) >= sizeof(te->name)) {
538 3efd8e31 2022-10-23 thomas 			err = got_error(GOT_ERR_NO_SPACE);
539 3efd8e31 2022-10-23 thomas 			goto done;
540 3efd8e31 2022-10-23 thomas 		}
541 3efd8e31 2022-10-23 thomas 		memcpy(te->id.sha1, pe->id, SHA1_DIGEST_LENGTH);
542 3efd8e31 2022-10-23 thomas 		te->mode = pe->mode;
543 3efd8e31 2022-10-23 thomas 		te->idx = i;
544 3efd8e31 2022-10-23 thomas 	}
545 3efd8e31 2022-10-23 thomas done:
546 3efd8e31 2022-10-23 thomas 	free(path_packfile);
547 3efd8e31 2022-10-23 thomas 	free(entries);
548 3efd8e31 2022-10-23 thomas 	free(buf);
549 3efd8e31 2022-10-23 thomas 	if (err == NULL) {
550 3efd8e31 2022-10-23 thomas 		(*tree)->refcnt++;
551 3efd8e31 2022-10-23 thomas 		err = got_repo_cache_tree(repo, id, *tree);
552 3efd8e31 2022-10-23 thomas 		if (err) {
553 3efd8e31 2022-10-23 thomas 			if (err->code == GOT_ERR_OBJ_EXISTS ||
554 3efd8e31 2022-10-23 thomas 			    err->code == GOT_ERR_OBJ_TOO_LARGE)
555 3efd8e31 2022-10-23 thomas 				err = NULL;
556 3efd8e31 2022-10-23 thomas 		}
557 3efd8e31 2022-10-23 thomas 	}
558 3efd8e31 2022-10-23 thomas 	if (err) {
559 3efd8e31 2022-10-23 thomas 		if (*tree)
560 3efd8e31 2022-10-23 thomas 			free((*tree)->entries);
561 3efd8e31 2022-10-23 thomas 		free(*tree);
562 3efd8e31 2022-10-23 thomas 		*tree = NULL;
563 3efd8e31 2022-10-23 thomas 	}
564 3efd8e31 2022-10-23 thomas 	return err;
565 3efd8e31 2022-10-23 thomas }
566 3efd8e31 2022-10-23 thomas 
567 3efd8e31 2022-10-23 thomas const struct got_error *
568 3efd8e31 2022-10-23 thomas got_object_open_as_tree(struct got_tree_object **tree,
569 3efd8e31 2022-10-23 thomas     struct got_repository *repo, struct got_object_id *id)
570 3efd8e31 2022-10-23 thomas {
571 3efd8e31 2022-10-23 thomas 	*tree = got_repo_get_cached_tree(repo, id);
572 3efd8e31 2022-10-23 thomas 	if (*tree != NULL) {
573 3efd8e31 2022-10-23 thomas 		(*tree)->refcnt++;
574 3efd8e31 2022-10-23 thomas 		return NULL;
575 3efd8e31 2022-10-23 thomas 	}
576 3efd8e31 2022-10-23 thomas 
577 3efd8e31 2022-10-23 thomas 	return open_tree(tree, repo, id, 0);
578 3efd8e31 2022-10-23 thomas }
579 3efd8e31 2022-10-23 thomas 
580 3efd8e31 2022-10-23 thomas const struct got_error *
581 3efd8e31 2022-10-23 thomas got_object_tree_open(struct got_tree_object **tree,
582 3efd8e31 2022-10-23 thomas     struct got_repository *repo, struct got_object *obj)
583 3efd8e31 2022-10-23 thomas {
584 3efd8e31 2022-10-23 thomas 	return open_tree(tree, repo, got_object_get_id(obj), 1);
585 3efd8e31 2022-10-23 thomas }
586 3efd8e31 2022-10-23 thomas 
587 3efd8e31 2022-10-23 thomas const struct got_error *
588 3efd8e31 2022-10-23 thomas got_object_open_as_blob(struct got_blob_object **blob,
589 3efd8e31 2022-10-23 thomas     struct got_repository *repo, struct got_object_id *id, size_t blocksize,
590 3efd8e31 2022-10-23 thomas     int outfd)
591 3efd8e31 2022-10-23 thomas {
592 3efd8e31 2022-10-23 thomas 	return got_error(GOT_ERR_NOT_IMPL);
593 3efd8e31 2022-10-23 thomas }
594 3efd8e31 2022-10-23 thomas 
595 3efd8e31 2022-10-23 thomas const struct got_error *
596 3efd8e31 2022-10-23 thomas got_object_blob_open(struct got_blob_object **blob,
597 3efd8e31 2022-10-23 thomas     struct got_repository *repo, struct got_object *obj, size_t blocksize,
598 3efd8e31 2022-10-23 thomas     int outfd)
599 3efd8e31 2022-10-23 thomas {
600 3efd8e31 2022-10-23 thomas 	return got_error(GOT_ERR_NOT_IMPL);
601 3efd8e31 2022-10-23 thomas }
602 3efd8e31 2022-10-23 thomas 
603 3efd8e31 2022-10-23 thomas static const struct got_error *
604 3efd8e31 2022-10-23 thomas open_tag(struct got_tag_object **tag, struct got_repository *repo,
605 3efd8e31 2022-10-23 thomas     struct got_object_id *id, int check_cache)
606 3efd8e31 2022-10-23 thomas {
607 3efd8e31 2022-10-23 thomas 	const struct got_error *err = NULL;
608 3efd8e31 2022-10-23 thomas 	struct got_packidx *packidx = NULL;
609 3efd8e31 2022-10-23 thomas 	int idx;
610 3efd8e31 2022-10-23 thomas 	char *path_packfile = NULL;
611 3efd8e31 2022-10-23 thomas 	struct got_object *obj = NULL;
612 3efd8e31 2022-10-23 thomas 	int obj_type = GOT_OBJ_TYPE_ANY;
613 3efd8e31 2022-10-23 thomas 
614 3efd8e31 2022-10-23 thomas 	if (check_cache) {
615 3efd8e31 2022-10-23 thomas 		*tag = got_repo_get_cached_tag(repo, id);
616 3efd8e31 2022-10-23 thomas 		if (*tag != NULL) {
617 3efd8e31 2022-10-23 thomas 			(*tag)->refcnt++;
618 3efd8e31 2022-10-23 thomas 			return NULL;
619 3efd8e31 2022-10-23 thomas 		}
620 3efd8e31 2022-10-23 thomas 	} else
621 3efd8e31 2022-10-23 thomas 		*tag = NULL;
622 3efd8e31 2022-10-23 thomas 
623 3efd8e31 2022-10-23 thomas 	err = got_repo_search_packidx(&packidx, &idx, repo, id);
624 3efd8e31 2022-10-23 thomas 	if (err == NULL) {
625 3efd8e31 2022-10-23 thomas 		struct got_pack *pack = NULL;
626 3efd8e31 2022-10-23 thomas 		uint8_t *buf = NULL;
627 3efd8e31 2022-10-23 thomas 		size_t len;
628 3efd8e31 2022-10-23 thomas 
629 3efd8e31 2022-10-23 thomas 		err = got_packidx_get_packfile_path(&path_packfile,
630 3efd8e31 2022-10-23 thomas 		    packidx->path_packidx);
631 3efd8e31 2022-10-23 thomas 		if (err)
632 3efd8e31 2022-10-23 thomas 			return err;
633 3efd8e31 2022-10-23 thomas 
634 3efd8e31 2022-10-23 thomas 		pack = got_repo_get_cached_pack(repo, path_packfile);
635 3efd8e31 2022-10-23 thomas 		if (pack == NULL) {
636 3efd8e31 2022-10-23 thomas 			err = got_repo_cache_pack(&pack, repo, path_packfile,
637 3efd8e31 2022-10-23 thomas 			    packidx);
638 3efd8e31 2022-10-23 thomas 			if (err)
639 3efd8e31 2022-10-23 thomas 				goto done;
640 3efd8e31 2022-10-23 thomas 		}
641 3efd8e31 2022-10-23 thomas 
642 3efd8e31 2022-10-23 thomas 		/* Beware of "lightweight" tags: Check object type first. */
643 3efd8e31 2022-10-23 thomas 		err = got_packfile_open_object(&obj, pack, packidx, idx, id);
644 3efd8e31 2022-10-23 thomas 		if (err)
645 3efd8e31 2022-10-23 thomas 			goto done;
646 3efd8e31 2022-10-23 thomas 		obj_type = obj->type;
647 3efd8e31 2022-10-23 thomas 		if (obj_type != GOT_OBJ_TYPE_TAG) {
648 3efd8e31 2022-10-23 thomas 			err = got_error(GOT_ERR_OBJ_TYPE);
649 3efd8e31 2022-10-23 thomas 			got_object_close(obj);
650 3efd8e31 2022-10-23 thomas 			goto done;
651 3efd8e31 2022-10-23 thomas 		}
652 3efd8e31 2022-10-23 thomas 		err = got_packfile_extract_object_to_mem(&buf, &len,
653 3efd8e31 2022-10-23 thomas 		    obj, pack);
654 3efd8e31 2022-10-23 thomas 		got_object_close(obj);
655 3efd8e31 2022-10-23 thomas 		if (err)
656 3efd8e31 2022-10-23 thomas 			goto done;
657 3efd8e31 2022-10-23 thomas 		err = got_object_parse_tag(tag, buf, len);
658 3efd8e31 2022-10-23 thomas 		free(buf);
659 3efd8e31 2022-10-23 thomas 	} else if (err->code == GOT_ERR_NO_OBJ) {
660 3efd8e31 2022-10-23 thomas 		int fd;
661 3efd8e31 2022-10-23 thomas 
662 3efd8e31 2022-10-23 thomas 		err = got_object_open_loose_fd(&fd, id, repo);
663 3efd8e31 2022-10-23 thomas 		if (err)
664 3efd8e31 2022-10-23 thomas 			return err;
665 3efd8e31 2022-10-23 thomas 		err = got_object_read_header(&obj, fd);
666 3efd8e31 2022-10-23 thomas 		if (close(fd) == -1 && err == NULL)
667 3efd8e31 2022-10-23 thomas 			err = got_error_from_errno("close");
668 3efd8e31 2022-10-23 thomas 		if (err)
669 3efd8e31 2022-10-23 thomas 			return err;
670 3efd8e31 2022-10-23 thomas 		obj_type = obj->type;
671 3efd8e31 2022-10-23 thomas 		got_object_close(obj);
672 3efd8e31 2022-10-23 thomas 		if (obj_type != GOT_OBJ_TYPE_TAG)
673 3efd8e31 2022-10-23 thomas 			return got_error(GOT_ERR_OBJ_TYPE);
674 3efd8e31 2022-10-23 thomas 
675 3efd8e31 2022-10-23 thomas 		err = got_object_open_loose_fd(&fd, id, repo);
676 3efd8e31 2022-10-23 thomas 		if (err)
677 3efd8e31 2022-10-23 thomas 			return err;
678 3efd8e31 2022-10-23 thomas 		err = got_object_read_tag(tag, fd, id, 0);
679 3efd8e31 2022-10-23 thomas 		if (close(fd) == -1 && err == NULL)
680 3efd8e31 2022-10-23 thomas 			err = got_error_from_errno("close");
681 3efd8e31 2022-10-23 thomas 		if (err)
682 3efd8e31 2022-10-23 thomas 			return err;
683 3efd8e31 2022-10-23 thomas 	}
684 3efd8e31 2022-10-23 thomas 
685 3efd8e31 2022-10-23 thomas 	if (err == NULL) {
686 3efd8e31 2022-10-23 thomas 		(*tag)->refcnt++;
687 3efd8e31 2022-10-23 thomas 		err = got_repo_cache_tag(repo, id, *tag);
688 3efd8e31 2022-10-23 thomas 		if (err) {
689 3efd8e31 2022-10-23 thomas 			if (err->code == GOT_ERR_OBJ_EXISTS ||
690 3efd8e31 2022-10-23 thomas 			    err->code == GOT_ERR_OBJ_TOO_LARGE)
691 3efd8e31 2022-10-23 thomas 				err = NULL;
692 3efd8e31 2022-10-23 thomas 		}
693 3efd8e31 2022-10-23 thomas 	}
694 3efd8e31 2022-10-23 thomas done:
695 3efd8e31 2022-10-23 thomas 	free(path_packfile);
696 3efd8e31 2022-10-23 thomas 	return err;
697 3efd8e31 2022-10-23 thomas }
698 3efd8e31 2022-10-23 thomas 
699 3efd8e31 2022-10-23 thomas const struct got_error *
700 3efd8e31 2022-10-23 thomas got_object_open_as_tag(struct got_tag_object **tag,
701 3efd8e31 2022-10-23 thomas     struct got_repository *repo, struct got_object_id *id)
702 3efd8e31 2022-10-23 thomas {
703 3efd8e31 2022-10-23 thomas 	*tag = got_repo_get_cached_tag(repo, id);
704 3efd8e31 2022-10-23 thomas 	if (*tag != NULL) {
705 3efd8e31 2022-10-23 thomas 		(*tag)->refcnt++;
706 3efd8e31 2022-10-23 thomas 		return NULL;
707 3efd8e31 2022-10-23 thomas 	}
708 3efd8e31 2022-10-23 thomas 
709 3efd8e31 2022-10-23 thomas 	return open_tag(tag, repo, id, 0);
710 3efd8e31 2022-10-23 thomas }
711 3efd8e31 2022-10-23 thomas 
712 3efd8e31 2022-10-23 thomas const struct got_error *
713 3efd8e31 2022-10-23 thomas got_object_tag_open(struct got_tag_object **tag,
714 3efd8e31 2022-10-23 thomas     struct got_repository *repo, struct got_object *obj)
715 3efd8e31 2022-10-23 thomas {
716 3efd8e31 2022-10-23 thomas 	return open_tag(tag, repo, got_object_get_id(obj), 1);
717 3efd8e31 2022-10-23 thomas }