1 13b2bc37 2022-10-23 stsp /*
  2 13b2bc37 2022-10-23 stsp  * Copyright (c) 2022 Stefan Sperling <stsp@openbsd.org>
  3 13b2bc37 2022-10-23 stsp  *
  4 13b2bc37 2022-10-23 stsp  * Permission to use, copy, modify, and distribute this software for any
  5 13b2bc37 2022-10-23 stsp  * purpose with or without fee is hereby granted, provided that the above
  6 13b2bc37 2022-10-23 stsp  * copyright notice and this permission notice appear in all copies.
  7 13b2bc37 2022-10-23 stsp  *
  8 13b2bc37 2022-10-23 stsp  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  9 13b2bc37 2022-10-23 stsp  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 10 13b2bc37 2022-10-23 stsp  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 11 13b2bc37 2022-10-23 stsp  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 12 13b2bc37 2022-10-23 stsp  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 13 13b2bc37 2022-10-23 stsp  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 14 13b2bc37 2022-10-23 stsp  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 15 13b2bc37 2022-10-23 stsp  */
 16 13b2bc37 2022-10-23 stsp 
 17 13b2bc37 2022-10-23 stsp #include <sys/queue.h>
 18 13b2bc37 2022-10-23 stsp #include <sys/tree.h>
 19 13b2bc37 2022-10-23 stsp #include <sys/stat.h>
 20 13b2bc37 2022-10-23 stsp 
 21 13b2bc37 2022-10-23 stsp #include <errno.h>
 22 13b2bc37 2022-10-23 stsp #include <limits.h>
 23 13b2bc37 2022-10-23 stsp #include <sha1.h>
 24 69c6accf 2023-02-04 op #include <sha2.h>
 25 13b2bc37 2022-10-23 stsp #include <stdio.h>
 26 13b2bc37 2022-10-23 stsp #include <stdlib.h>
 27 13b2bc37 2022-10-23 stsp #include <string.h>
 28 13b2bc37 2022-10-23 stsp #include <unistd.h>
 29 13b2bc37 2022-10-23 stsp 
 30 13b2bc37 2022-10-23 stsp #include "got_error.h"
 31 13b2bc37 2022-10-23 stsp #include "got_object.h"
 32 13b2bc37 2022-10-23 stsp #include "got_repository.h"
 33 13b2bc37 2022-10-23 stsp #include "got_path.h"
 34 13b2bc37 2022-10-23 stsp 
 35 13b2bc37 2022-10-23 stsp #include "got_lib_delta.h"
 36 13b2bc37 2022-10-23 stsp #include "got_lib_object.h"
 37 13b2bc37 2022-10-23 stsp #include "got_lib_object_cache.h"
 38 13b2bc37 2022-10-23 stsp #include "got_lib_object_parse.h"
 39 13b2bc37 2022-10-23 stsp #include "got_lib_pack.h"
 40 13b2bc37 2022-10-23 stsp #include "got_lib_repository.h"
 41 13b2bc37 2022-10-23 stsp 
 42 13b2bc37 2022-10-23 stsp const struct got_error *
 43 13b2bc37 2022-10-23 stsp got_object_open_packed(struct got_object **obj, struct got_object_id *id,
 44 13b2bc37 2022-10-23 stsp     struct got_repository *repo)
 45 13b2bc37 2022-10-23 stsp {
 46 13b2bc37 2022-10-23 stsp 	const struct got_error *err = NULL;
 47 13b2bc37 2022-10-23 stsp 	struct got_pack *pack = NULL;
 48 13b2bc37 2022-10-23 stsp 	struct got_packidx *packidx = NULL;
 49 13b2bc37 2022-10-23 stsp 	int idx;
 50 13b2bc37 2022-10-23 stsp 	char *path_packfile;
 51 13b2bc37 2022-10-23 stsp 
 52 13b2bc37 2022-10-23 stsp 	err = got_repo_search_packidx(&packidx, &idx, repo, id);
 53 13b2bc37 2022-10-23 stsp 	if (err)
 54 13b2bc37 2022-10-23 stsp 		return err;
 55 13b2bc37 2022-10-23 stsp 
 56 13b2bc37 2022-10-23 stsp 	err = got_packidx_get_packfile_path(&path_packfile,
 57 13b2bc37 2022-10-23 stsp 	    packidx->path_packidx);
 58 13b2bc37 2022-10-23 stsp 	if (err)
 59 13b2bc37 2022-10-23 stsp 		return err;
 60 13b2bc37 2022-10-23 stsp 
 61 13b2bc37 2022-10-23 stsp 	pack = got_repo_get_cached_pack(repo, path_packfile);
 62 13b2bc37 2022-10-23 stsp 	if (pack == NULL) {
 63 13b2bc37 2022-10-23 stsp 		err = got_repo_cache_pack(&pack, repo, path_packfile, packidx);
 64 13b2bc37 2022-10-23 stsp 		if (err)
 65 13b2bc37 2022-10-23 stsp 			goto done;
 66 13b2bc37 2022-10-23 stsp 	}
 67 13b2bc37 2022-10-23 stsp 
 68 13b2bc37 2022-10-23 stsp 	err = got_packfile_open_object(obj, pack, packidx, idx, id);
 69 13b2bc37 2022-10-23 stsp 	if (err)
 70 13b2bc37 2022-10-23 stsp 		return err;
 71 13b2bc37 2022-10-23 stsp 	(*obj)->refcnt++;
 72 13b2bc37 2022-10-23 stsp 
 73 13b2bc37 2022-10-23 stsp 	err = got_repo_cache_object(repo, id, *obj);
 74 13b2bc37 2022-10-23 stsp 	if (err) {
 75 13b2bc37 2022-10-23 stsp 		if (err->code == GOT_ERR_OBJ_EXISTS ||
 76 13b2bc37 2022-10-23 stsp 		    err->code == GOT_ERR_OBJ_TOO_LARGE)
 77 13b2bc37 2022-10-23 stsp 			err = NULL;
 78 13b2bc37 2022-10-23 stsp 	}
 79 13b2bc37 2022-10-23 stsp done:
 80 13b2bc37 2022-10-23 stsp 	free(path_packfile);
 81 13b2bc37 2022-10-23 stsp 	return err;
 82 13b2bc37 2022-10-23 stsp }
 83 13b2bc37 2022-10-23 stsp 
 84 13b2bc37 2022-10-23 stsp const struct got_error *
 85 13b2bc37 2022-10-23 stsp got_object_open_from_packfile(struct got_object **obj, struct got_object_id *id,
 86 13b2bc37 2022-10-23 stsp     struct got_pack *pack, struct got_packidx *packidx, int obj_idx,
 87 13b2bc37 2022-10-23 stsp     struct got_repository *repo)
 88 13b2bc37 2022-10-23 stsp {
 89 13b2bc37 2022-10-23 stsp 	return got_error(GOT_ERR_NOT_IMPL);
 90 13b2bc37 2022-10-23 stsp }
 91 13b2bc37 2022-10-23 stsp 
 92 13b2bc37 2022-10-23 stsp const struct got_error *
 93 13b2bc37 2022-10-23 stsp got_object_read_raw_delta(uint64_t *base_size, uint64_t *result_size,
 94 13b2bc37 2022-10-23 stsp     off_t *delta_size, off_t *delta_compressed_size, off_t *delta_offset,
 95 13b2bc37 2022-10-23 stsp     off_t *delta_out_offset, struct got_object_id **base_id, int delta_cache_fd,
 96 13b2bc37 2022-10-23 stsp     struct got_packidx *packidx, int obj_idx, struct got_object_id *id,
 97 13b2bc37 2022-10-23 stsp     struct got_repository *repo)
 98 13b2bc37 2022-10-23 stsp {
 99 13b2bc37 2022-10-23 stsp 	return got_error(GOT_ERR_NOT_IMPL);
100 13b2bc37 2022-10-23 stsp }
101 13b2bc37 2022-10-23 stsp 
102 13b2bc37 2022-10-23 stsp const struct got_error *
103 13b2bc37 2022-10-23 stsp got_object_open(struct got_object **obj, struct got_repository *repo,
104 13b2bc37 2022-10-23 stsp     struct got_object_id *id)
105 13b2bc37 2022-10-23 stsp {
106 13b2bc37 2022-10-23 stsp 	const struct got_error *err = NULL;
107 13b2bc37 2022-10-23 stsp 	int fd;
108 13b2bc37 2022-10-23 stsp 
109 13b2bc37 2022-10-23 stsp 	*obj = got_repo_get_cached_object(repo, id);
110 13b2bc37 2022-10-23 stsp 	if (*obj != NULL) {
111 13b2bc37 2022-10-23 stsp 		(*obj)->refcnt++;
112 13b2bc37 2022-10-23 stsp 		return NULL;
113 13b2bc37 2022-10-23 stsp 	}
114 13b2bc37 2022-10-23 stsp 
115 13b2bc37 2022-10-23 stsp 	err = got_object_open_packed(obj, id, repo);
116 13b2bc37 2022-10-23 stsp 	if (err) {
117 13b2bc37 2022-10-23 stsp 		if (err->code != GOT_ERR_NO_OBJ)
118 13b2bc37 2022-10-23 stsp 			return err;
119 13b2bc37 2022-10-23 stsp 	} else
120 13b2bc37 2022-10-23 stsp 		return NULL;
121 13b2bc37 2022-10-23 stsp 
122 13b2bc37 2022-10-23 stsp 	err = got_object_open_loose_fd(&fd, id, repo);
123 13b2bc37 2022-10-23 stsp 	if (err) {
124 13b2bc37 2022-10-23 stsp 		if (err->code == GOT_ERR_ERRNO && errno == ENOENT)
125 13b2bc37 2022-10-23 stsp 			err = got_error_no_obj(id);
126 13b2bc37 2022-10-23 stsp 		return err;
127 13b2bc37 2022-10-23 stsp 	}
128 13b2bc37 2022-10-23 stsp 
129 13b2bc37 2022-10-23 stsp 	err = got_object_read_header(obj, fd);
130 13b2bc37 2022-10-23 stsp 	if (err)
131 13b2bc37 2022-10-23 stsp 		goto done;
132 13b2bc37 2022-10-23 stsp 
133 13b2bc37 2022-10-23 stsp 	memcpy(&(*obj)->id, id, sizeof((*obj)->id));
134 13b2bc37 2022-10-23 stsp 	(*obj)->refcnt++;
135 13b2bc37 2022-10-23 stsp 
136 13b2bc37 2022-10-23 stsp 	err = got_repo_cache_object(repo, id, *obj);
137 13b2bc37 2022-10-23 stsp 	if (err) {
138 13b2bc37 2022-10-23 stsp 		if (err->code == GOT_ERR_OBJ_EXISTS ||
139 13b2bc37 2022-10-23 stsp 		    err->code == GOT_ERR_OBJ_TOO_LARGE)
140 13b2bc37 2022-10-23 stsp 			err = NULL;
141 13b2bc37 2022-10-23 stsp 	}
142 13b2bc37 2022-10-23 stsp done:
143 13b2bc37 2022-10-23 stsp 	if (close(fd) == -1 && err == NULL)
144 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("close");
145 13b2bc37 2022-10-23 stsp 	return err;
146 13b2bc37 2022-10-23 stsp }
147 13b2bc37 2022-10-23 stsp 
148 13b2bc37 2022-10-23 stsp static const struct got_error *
149 13b2bc37 2022-10-23 stsp wrap_fd(FILE **f, int wrapped_fd)
150 13b2bc37 2022-10-23 stsp {
151 13b2bc37 2022-10-23 stsp 	const struct got_error *err = NULL;
152 13b2bc37 2022-10-23 stsp 	int fd;
153 13b2bc37 2022-10-23 stsp 
154 13b2bc37 2022-10-23 stsp 	if (ftruncate(wrapped_fd, 0L) == -1)
155 13b2bc37 2022-10-23 stsp 		return got_error_from_errno("ftruncate");
156 13b2bc37 2022-10-23 stsp 
157 13b2bc37 2022-10-23 stsp 	if (lseek(wrapped_fd, 0L, SEEK_SET) == -1)
158 13b2bc37 2022-10-23 stsp 		return got_error_from_errno("lseek");
159 13b2bc37 2022-10-23 stsp 
160 13b2bc37 2022-10-23 stsp 	fd = dup(wrapped_fd);
161 13b2bc37 2022-10-23 stsp 	if (fd == -1)
162 13b2bc37 2022-10-23 stsp 		return got_error_from_errno("dup");
163 13b2bc37 2022-10-23 stsp 
164 13b2bc37 2022-10-23 stsp 	*f = fdopen(fd, "w+");
165 13b2bc37 2022-10-23 stsp 	if (*f == NULL) {
166 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("fdopen");
167 13b2bc37 2022-10-23 stsp 		close(fd);
168 13b2bc37 2022-10-23 stsp 	}
169 13b2bc37 2022-10-23 stsp 	return err;
170 13b2bc37 2022-10-23 stsp }
171 13b2bc37 2022-10-23 stsp 
172 13b2bc37 2022-10-23 stsp static const struct got_error *
173 13b2bc37 2022-10-23 stsp read_packed_object_raw(uint8_t **outbuf, off_t *size, size_t *hdrlen,
174 13b2bc37 2022-10-23 stsp     int outfd, struct got_pack *pack, struct got_packidx *packidx, int idx,
175 13b2bc37 2022-10-23 stsp     struct got_object_id *id)
176 13b2bc37 2022-10-23 stsp {
177 13b2bc37 2022-10-23 stsp 	const struct got_error *err = NULL;
178 13b2bc37 2022-10-23 stsp 	uint64_t raw_size = 0;
179 13b2bc37 2022-10-23 stsp 	struct got_object *obj;
180 13b2bc37 2022-10-23 stsp 	FILE *outfile = NULL, *basefile = NULL, *accumfile = NULL;
181 13b2bc37 2022-10-23 stsp 
182 13b2bc37 2022-10-23 stsp 	*outbuf = NULL;
183 13b2bc37 2022-10-23 stsp 	*size = 0;
184 13b2bc37 2022-10-23 stsp 	*hdrlen = 0;
185 13b2bc37 2022-10-23 stsp 
186 13b2bc37 2022-10-23 stsp 	err = got_packfile_open_object(&obj, pack, packidx, idx, id);
187 13b2bc37 2022-10-23 stsp 	if (err)
188 13b2bc37 2022-10-23 stsp 		return err;
189 13b2bc37 2022-10-23 stsp 
190 13b2bc37 2022-10-23 stsp 	if (obj->flags & GOT_OBJ_FLAG_DELTIFIED) {
191 13b2bc37 2022-10-23 stsp 		err = got_pack_get_max_delta_object_size(&raw_size, obj, pack);
192 13b2bc37 2022-10-23 stsp 		if (err)
193 13b2bc37 2022-10-23 stsp 			goto done;
194 13b2bc37 2022-10-23 stsp 	} else
195 13b2bc37 2022-10-23 stsp 		raw_size = obj->size;
196 13b2bc37 2022-10-23 stsp 
197 13b2bc37 2022-10-23 stsp 	if (raw_size <= GOT_DELTA_RESULT_SIZE_CACHED_MAX) {
198 13b2bc37 2022-10-23 stsp 		size_t len;
199 13b2bc37 2022-10-23 stsp 		err = got_packfile_extract_object_to_mem(outbuf, &len,
200 13b2bc37 2022-10-23 stsp 		    obj, pack);
201 13b2bc37 2022-10-23 stsp 		if (err)
202 13b2bc37 2022-10-23 stsp 			goto done;
203 13b2bc37 2022-10-23 stsp 		*size = (off_t)len;
204 13b2bc37 2022-10-23 stsp 	} else {
205 13b2bc37 2022-10-23 stsp 		/*
206 13b2bc37 2022-10-23 stsp 		 * XXX This uses 3 file extra descriptors for no good reason.
207 13b2bc37 2022-10-23 stsp 		 * We should have got_packfile_extract_object_to_fd().
208 13b2bc37 2022-10-23 stsp 		 */
209 13b2bc37 2022-10-23 stsp 		err = wrap_fd(&outfile, outfd);
210 13b2bc37 2022-10-23 stsp 		if (err)
211 13b2bc37 2022-10-23 stsp 			goto done;
212 13b2bc37 2022-10-23 stsp 		err = wrap_fd(&basefile, pack->basefd);
213 13b2bc37 2022-10-23 stsp 		if (err)
214 13b2bc37 2022-10-23 stsp 			goto done;
215 13b2bc37 2022-10-23 stsp 		err = wrap_fd(&accumfile, pack->accumfd);
216 13b2bc37 2022-10-23 stsp 		if (err)
217 13b2bc37 2022-10-23 stsp 			goto done;
218 13b2bc37 2022-10-23 stsp 		err = got_packfile_extract_object(pack, obj, outfile, basefile,
219 13b2bc37 2022-10-23 stsp 		    accumfile);
220 13b2bc37 2022-10-23 stsp 		if (err)
221 13b2bc37 2022-10-23 stsp 			goto done;
222 95bdb85d 2023-01-09 stsp 		*size = obj->size;
223 13b2bc37 2022-10-23 stsp 	}
224 13b2bc37 2022-10-23 stsp 
225 13b2bc37 2022-10-23 stsp 	*hdrlen = obj->hdrlen;
226 13b2bc37 2022-10-23 stsp done:
227 13b2bc37 2022-10-23 stsp 	got_object_close(obj);
228 13b2bc37 2022-10-23 stsp 	if (outfile && fclose(outfile) == EOF && err == NULL)
229 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("fclose");
230 13b2bc37 2022-10-23 stsp 	if (basefile && fclose(basefile) == EOF && err == NULL)
231 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("fclose");
232 13b2bc37 2022-10-23 stsp 	if (accumfile && fclose(accumfile) == EOF && err == NULL)
233 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("fclose");
234 13b2bc37 2022-10-23 stsp 	return err;
235 13b2bc37 2022-10-23 stsp 
236 13b2bc37 2022-10-23 stsp }
237 13b2bc37 2022-10-23 stsp 
238 13b2bc37 2022-10-23 stsp static void
239 13b2bc37 2022-10-23 stsp put_raw_object_tempfile(struct got_raw_object *obj)
240 13b2bc37 2022-10-23 stsp {
241 13b2bc37 2022-10-23 stsp 	struct got_repository *repo = obj->close_arg;
242 13b2bc37 2022-10-23 stsp 
243 13b2bc37 2022-10-23 stsp 	if (obj->tempfile_idx != -1)
244 13b2bc37 2022-10-23 stsp 		got_repo_temp_fds_put(obj->tempfile_idx, repo);
245 13b2bc37 2022-10-23 stsp }
246 13b2bc37 2022-10-23 stsp 
247 13b2bc37 2022-10-23 stsp /* *outfd must be initialized to -1 by caller */
248 13b2bc37 2022-10-23 stsp const struct got_error *
249 13b2bc37 2022-10-23 stsp got_object_raw_open(struct got_raw_object **obj, int *outfd,
250 13b2bc37 2022-10-23 stsp     struct got_repository *repo, struct got_object_id *id)
251 13b2bc37 2022-10-23 stsp {
252 13b2bc37 2022-10-23 stsp 	const struct got_error *err = NULL;
253 13b2bc37 2022-10-23 stsp 	struct got_packidx *packidx = NULL;
254 3a975a9f 2023-01-09 stsp 	int idx, tempfd, tempfile_idx;
255 13b2bc37 2022-10-23 stsp 	uint8_t *outbuf = NULL;
256 13b2bc37 2022-10-23 stsp 	off_t size = 0;
257 13b2bc37 2022-10-23 stsp 	size_t hdrlen = 0;
258 13b2bc37 2022-10-23 stsp 	char *path_packfile = NULL;
259 13b2bc37 2022-10-23 stsp 
260 13b2bc37 2022-10-23 stsp 	*obj = got_repo_get_cached_raw_object(repo, id);
261 13b2bc37 2022-10-23 stsp 	if (*obj != NULL) {
262 13b2bc37 2022-10-23 stsp 		(*obj)->refcnt++;
263 13b2bc37 2022-10-23 stsp 		return NULL;
264 13b2bc37 2022-10-23 stsp 	}
265 13b2bc37 2022-10-23 stsp 
266 3a975a9f 2023-01-09 stsp 	err = got_repo_temp_fds_get(&tempfd, &tempfile_idx, repo);
267 3a975a9f 2023-01-09 stsp 	if (err)
268 3a975a9f 2023-01-09 stsp 		return err;
269 13b2bc37 2022-10-23 stsp 
270 13b2bc37 2022-10-23 stsp 	err = got_repo_search_packidx(&packidx, &idx, repo, id);
271 13b2bc37 2022-10-23 stsp 	if (err == NULL) {
272 13b2bc37 2022-10-23 stsp 		struct got_pack *pack = NULL;
273 13b2bc37 2022-10-23 stsp 
274 13b2bc37 2022-10-23 stsp 		err = got_packidx_get_packfile_path(&path_packfile,
275 13b2bc37 2022-10-23 stsp 		    packidx->path_packidx);
276 13b2bc37 2022-10-23 stsp 		if (err)
277 13b2bc37 2022-10-23 stsp 			goto done;
278 13b2bc37 2022-10-23 stsp 
279 13b2bc37 2022-10-23 stsp 		pack = got_repo_get_cached_pack(repo, path_packfile);
280 13b2bc37 2022-10-23 stsp 		if (pack == NULL) {
281 13b2bc37 2022-10-23 stsp 			err = got_repo_cache_pack(&pack, repo, path_packfile,
282 13b2bc37 2022-10-23 stsp 			    packidx);
283 13b2bc37 2022-10-23 stsp 			if (err)
284 13b2bc37 2022-10-23 stsp 				goto done;
285 13b2bc37 2022-10-23 stsp 		}
286 13b2bc37 2022-10-23 stsp 		err = read_packed_object_raw(&outbuf, &size, &hdrlen,
287 3a975a9f 2023-01-09 stsp 		    tempfd, pack, packidx, idx, id);
288 13b2bc37 2022-10-23 stsp 		if (err)
289 13b2bc37 2022-10-23 stsp 			goto done;
290 13b2bc37 2022-10-23 stsp 	} else if (err->code == GOT_ERR_NO_OBJ) {
291 13b2bc37 2022-10-23 stsp 		int fd;
292 13b2bc37 2022-10-23 stsp 
293 13b2bc37 2022-10-23 stsp 		err = got_object_open_loose_fd(&fd, id, repo);
294 13b2bc37 2022-10-23 stsp 		if (err)
295 13b2bc37 2022-10-23 stsp 			goto done;
296 13b2bc37 2022-10-23 stsp 		err = got_object_read_raw(&outbuf, &size, &hdrlen,
297 3a975a9f 2023-01-09 stsp 		    GOT_DELTA_RESULT_SIZE_CACHED_MAX, tempfd, id, fd);
298 13b2bc37 2022-10-23 stsp 		if (close(fd) == -1 && err == NULL)
299 13b2bc37 2022-10-23 stsp 			err = got_error_from_errno("close");
300 13b2bc37 2022-10-23 stsp 		if (err)
301 3a975a9f 2023-01-09 stsp 			goto done;
302 3a975a9f 2023-01-09 stsp 	}
303 3a975a9f 2023-01-09 stsp 
304 3a975a9f 2023-01-09 stsp 	if (outbuf == NULL) {
305 3a975a9f 2023-01-09 stsp 		if (*outfd != -1) {
306 3a975a9f 2023-01-09 stsp 			err = got_error_msg(GOT_ERR_NOT_IMPL, "bad outfd");
307 3a975a9f 2023-01-09 stsp 			goto done;
308 3a975a9f 2023-01-09 stsp 		}
309 3a975a9f 2023-01-09 stsp 
310 3a975a9f 2023-01-09 stsp 		/*
311 3a975a9f 2023-01-09 stsp 		 * Duplicate tempfile descriptor to allow use of
312 3a975a9f 2023-01-09 stsp 		 * fdopen(3) inside got_object_raw_alloc().
313 3a975a9f 2023-01-09 stsp 		 */
314 3a975a9f 2023-01-09 stsp 		*outfd = dup(tempfd);
315 3a975a9f 2023-01-09 stsp 		if (*outfd == -1) {
316 3a975a9f 2023-01-09 stsp 			err = got_error_from_errno("dup");
317 13b2bc37 2022-10-23 stsp 			goto done;
318 3a975a9f 2023-01-09 stsp 		}
319 13b2bc37 2022-10-23 stsp 	}
320 13b2bc37 2022-10-23 stsp 
321 60c140ae 2023-01-09 stsp 	err = got_object_raw_alloc(obj, outbuf, outfd,
322 60c140ae 2023-01-09 stsp 	    GOT_DELTA_RESULT_SIZE_CACHED_MAX, hdrlen, size);
323 13b2bc37 2022-10-23 stsp 	if (err)
324 13b2bc37 2022-10-23 stsp 		goto done;
325 13b2bc37 2022-10-23 stsp 
326 13b2bc37 2022-10-23 stsp 	err = got_repo_cache_raw_object(repo, id, *obj);
327 13b2bc37 2022-10-23 stsp 	if (err) {
328 13b2bc37 2022-10-23 stsp 		if (err->code == GOT_ERR_OBJ_EXISTS ||
329 13b2bc37 2022-10-23 stsp 		    err->code == GOT_ERR_OBJ_TOO_LARGE)
330 13b2bc37 2022-10-23 stsp 			err = NULL;
331 13b2bc37 2022-10-23 stsp 	}
332 13b2bc37 2022-10-23 stsp done:
333 13b2bc37 2022-10-23 stsp 	free(path_packfile);
334 13b2bc37 2022-10-23 stsp 	if (err) {
335 13b2bc37 2022-10-23 stsp 		if (*obj) {
336 13b2bc37 2022-10-23 stsp 			got_object_raw_close(*obj);
337 13b2bc37 2022-10-23 stsp 			*obj = NULL;
338 13b2bc37 2022-10-23 stsp 		}
339 13b2bc37 2022-10-23 stsp 		free(outbuf);
340 3a975a9f 2023-01-09 stsp 		got_repo_temp_fds_put(tempfile_idx, repo);
341 3a975a9f 2023-01-09 stsp 		if (*outfd != -1) {
342 3a975a9f 2023-01-09 stsp 			close(*outfd);
343 3a975a9f 2023-01-09 stsp 			*outfd = -1;
344 3a975a9f 2023-01-09 stsp 		}
345 13b2bc37 2022-10-23 stsp 	} else {
346 3a975a9f 2023-01-09 stsp 		if (((*obj)->f == NULL && (*obj)->fd == -1)) {
347 3a975a9f 2023-01-09 stsp 			/* This raw object is not backed by a file. */
348 3a975a9f 2023-01-09 stsp 			got_repo_temp_fds_put(tempfile_idx, repo);
349 3a975a9f 2023-01-09 stsp 			if (*outfd != -1) {
350 3a975a9f 2023-01-09 stsp 				close(*outfd);
351 3a975a9f 2023-01-09 stsp 				*outfd = -1;
352 3a975a9f 2023-01-09 stsp 			}
353 3a975a9f 2023-01-09 stsp 		} else {
354 3a975a9f 2023-01-09 stsp 			(*obj)->tempfile_idx = tempfile_idx;
355 3a975a9f 2023-01-09 stsp 			(*obj)->close_cb = put_raw_object_tempfile;
356 3a975a9f 2023-01-09 stsp 			(*obj)->close_arg = repo;
357 3a975a9f 2023-01-09 stsp 		}
358 13b2bc37 2022-10-23 stsp 	}
359 13b2bc37 2022-10-23 stsp 	return err;
360 13b2bc37 2022-10-23 stsp }
361 13b2bc37 2022-10-23 stsp 
362 13b2bc37 2022-10-23 stsp static const struct got_error *
363 13b2bc37 2022-10-23 stsp open_commit(struct got_commit_object **commit,
364 13b2bc37 2022-10-23 stsp     struct got_repository *repo, struct got_object_id *id, int check_cache)
365 13b2bc37 2022-10-23 stsp {
366 13b2bc37 2022-10-23 stsp 	const struct got_error *err = NULL;
367 13b2bc37 2022-10-23 stsp 	struct got_packidx *packidx = NULL;
368 13b2bc37 2022-10-23 stsp 	int idx;
369 13b2bc37 2022-10-23 stsp 	char *path_packfile = NULL;
370 13b2bc37 2022-10-23 stsp 
371 13b2bc37 2022-10-23 stsp 	if (check_cache) {
372 13b2bc37 2022-10-23 stsp 		*commit = got_repo_get_cached_commit(repo, id);
373 13b2bc37 2022-10-23 stsp 		if (*commit != NULL) {
374 13b2bc37 2022-10-23 stsp 			(*commit)->refcnt++;
375 13b2bc37 2022-10-23 stsp 			return NULL;
376 13b2bc37 2022-10-23 stsp 		}
377 13b2bc37 2022-10-23 stsp 	} else
378 13b2bc37 2022-10-23 stsp 		*commit = NULL;
379 13b2bc37 2022-10-23 stsp 
380 13b2bc37 2022-10-23 stsp 	err = got_repo_search_packidx(&packidx, &idx, repo, id);
381 13b2bc37 2022-10-23 stsp 	if (err == NULL) {
382 13b2bc37 2022-10-23 stsp 		struct got_pack *pack = NULL;
383 13b2bc37 2022-10-23 stsp 		struct got_object *obj;
384 13b2bc37 2022-10-23 stsp 		uint8_t *buf;
385 13b2bc37 2022-10-23 stsp 		size_t len;
386 13b2bc37 2022-10-23 stsp 
387 13b2bc37 2022-10-23 stsp 		err = got_packidx_get_packfile_path(&path_packfile,
388 13b2bc37 2022-10-23 stsp 		    packidx->path_packidx);
389 13b2bc37 2022-10-23 stsp 		if (err)
390 13b2bc37 2022-10-23 stsp 			return err;
391 13b2bc37 2022-10-23 stsp 
392 13b2bc37 2022-10-23 stsp 		pack = got_repo_get_cached_pack(repo, path_packfile);
393 13b2bc37 2022-10-23 stsp 		if (pack == NULL) {
394 13b2bc37 2022-10-23 stsp 			err = got_repo_cache_pack(&pack, repo, path_packfile,
395 13b2bc37 2022-10-23 stsp 			    packidx);
396 13b2bc37 2022-10-23 stsp 			if (err)
397 13b2bc37 2022-10-23 stsp 				goto done;
398 13b2bc37 2022-10-23 stsp 		}
399 13b2bc37 2022-10-23 stsp 		err = got_packfile_open_object(&obj, pack, packidx, idx, id);
400 13b2bc37 2022-10-23 stsp 		if (err)
401 13b2bc37 2022-10-23 stsp 			goto done;
402 13b2bc37 2022-10-23 stsp 		err = got_packfile_extract_object_to_mem(&buf, &len,
403 13b2bc37 2022-10-23 stsp 		    obj, pack);
404 13b2bc37 2022-10-23 stsp 		got_object_close(obj);
405 13b2bc37 2022-10-23 stsp 		if (err)
406 13b2bc37 2022-10-23 stsp 			goto done;
407 13b2bc37 2022-10-23 stsp 		err = got_object_parse_commit(commit, buf, len);
408 13b2bc37 2022-10-23 stsp 		free(buf);
409 13b2bc37 2022-10-23 stsp 	} else if (err->code == GOT_ERR_NO_OBJ) {
410 13b2bc37 2022-10-23 stsp 		int fd;
411 13b2bc37 2022-10-23 stsp 
412 13b2bc37 2022-10-23 stsp 		err = got_object_open_loose_fd(&fd, id, repo);
413 13b2bc37 2022-10-23 stsp 		if (err)
414 13b2bc37 2022-10-23 stsp 			return err;
415 13b2bc37 2022-10-23 stsp 		err = got_object_read_commit(commit, fd, id, 0);
416 13b2bc37 2022-10-23 stsp 		if (close(fd) == -1 && err == NULL)
417 13b2bc37 2022-10-23 stsp 			err = got_error_from_errno("close");
418 13b2bc37 2022-10-23 stsp 		if (err)
419 13b2bc37 2022-10-23 stsp 			return err;
420 13b2bc37 2022-10-23 stsp 	}
421 13b2bc37 2022-10-23 stsp 
422 13b2bc37 2022-10-23 stsp 	if (err == NULL) {
423 13b2bc37 2022-10-23 stsp 		(*commit)->refcnt++;
424 13b2bc37 2022-10-23 stsp 		err = got_repo_cache_commit(repo, id, *commit);
425 13b2bc37 2022-10-23 stsp 		if (err) {
426 13b2bc37 2022-10-23 stsp 			if (err->code == GOT_ERR_OBJ_EXISTS ||
427 13b2bc37 2022-10-23 stsp 			    err->code == GOT_ERR_OBJ_TOO_LARGE)
428 13b2bc37 2022-10-23 stsp 				err = NULL;
429 13b2bc37 2022-10-23 stsp 		}
430 13b2bc37 2022-10-23 stsp 	}
431 13b2bc37 2022-10-23 stsp done:
432 13b2bc37 2022-10-23 stsp 	free(path_packfile);
433 13b2bc37 2022-10-23 stsp 	return err;
434 13b2bc37 2022-10-23 stsp }
435 13b2bc37 2022-10-23 stsp 
436 13b2bc37 2022-10-23 stsp const struct got_error *
437 13b2bc37 2022-10-23 stsp got_object_open_as_commit(struct got_commit_object **commit,
438 13b2bc37 2022-10-23 stsp     struct got_repository *repo, struct got_object_id *id)
439 13b2bc37 2022-10-23 stsp {
440 13b2bc37 2022-10-23 stsp 	*commit = got_repo_get_cached_commit(repo, id);
441 13b2bc37 2022-10-23 stsp 	if (*commit != NULL) {
442 13b2bc37 2022-10-23 stsp 		(*commit)->refcnt++;
443 13b2bc37 2022-10-23 stsp 		return NULL;
444 13b2bc37 2022-10-23 stsp 	}
445 13b2bc37 2022-10-23 stsp 
446 13b2bc37 2022-10-23 stsp 	return open_commit(commit, repo, id, 0);
447 13b2bc37 2022-10-23 stsp }
448 13b2bc37 2022-10-23 stsp 
449 13b2bc37 2022-10-23 stsp const struct got_error *
450 13b2bc37 2022-10-23 stsp got_object_commit_open(struct got_commit_object **commit,
451 13b2bc37 2022-10-23 stsp     struct got_repository *repo, struct got_object *obj)
452 13b2bc37 2022-10-23 stsp {
453 13b2bc37 2022-10-23 stsp 	return open_commit(commit, repo, got_object_get_id(obj), 1);
454 13b2bc37 2022-10-23 stsp }
455 13b2bc37 2022-10-23 stsp 
456 13b2bc37 2022-10-23 stsp static const struct got_error *
457 13b2bc37 2022-10-23 stsp open_tree(struct got_tree_object **tree,
458 13b2bc37 2022-10-23 stsp     struct got_repository *repo, struct got_object_id *id, int check_cache)
459 13b2bc37 2022-10-23 stsp {
460 13b2bc37 2022-10-23 stsp 	const struct got_error *err = NULL;
461 13b2bc37 2022-10-23 stsp 	struct got_packidx *packidx = NULL;
462 13b2bc37 2022-10-23 stsp 	int idx;
463 13b2bc37 2022-10-23 stsp 	char *path_packfile = NULL;
464 13b2bc37 2022-10-23 stsp 	struct got_parsed_tree_entry *entries = NULL;
465 13b2bc37 2022-10-23 stsp 	size_t nentries = 0, nentries_alloc = 0, i;
466 13b2bc37 2022-10-23 stsp 	uint8_t *buf = NULL;
467 13b2bc37 2022-10-23 stsp 
468 13b2bc37 2022-10-23 stsp 	if (check_cache) {
469 13b2bc37 2022-10-23 stsp 		*tree = got_repo_get_cached_tree(repo, id);
470 13b2bc37 2022-10-23 stsp 		if (*tree != NULL) {
471 13b2bc37 2022-10-23 stsp 			(*tree)->refcnt++;
472 13b2bc37 2022-10-23 stsp 			return NULL;
473 13b2bc37 2022-10-23 stsp 		}
474 13b2bc37 2022-10-23 stsp 	} else
475 13b2bc37 2022-10-23 stsp 		*tree = NULL;
476 13b2bc37 2022-10-23 stsp 
477 13b2bc37 2022-10-23 stsp 	err = got_repo_search_packidx(&packidx, &idx, repo, id);
478 13b2bc37 2022-10-23 stsp 	if (err == NULL) {
479 13b2bc37 2022-10-23 stsp 		struct got_pack *pack = NULL;
480 13b2bc37 2022-10-23 stsp 		struct got_object *obj;
481 13b2bc37 2022-10-23 stsp 		size_t len;
482 13b2bc37 2022-10-23 stsp 
483 13b2bc37 2022-10-23 stsp 		err = got_packidx_get_packfile_path(&path_packfile,
484 13b2bc37 2022-10-23 stsp 		    packidx->path_packidx);
485 13b2bc37 2022-10-23 stsp 		if (err)
486 13b2bc37 2022-10-23 stsp 			return err;
487 13b2bc37 2022-10-23 stsp 
488 13b2bc37 2022-10-23 stsp 		pack = got_repo_get_cached_pack(repo, path_packfile);
489 13b2bc37 2022-10-23 stsp 		if (pack == NULL) {
490 13b2bc37 2022-10-23 stsp 			err = got_repo_cache_pack(&pack, repo, path_packfile,
491 13b2bc37 2022-10-23 stsp 			    packidx);
492 13b2bc37 2022-10-23 stsp 			if (err)
493 13b2bc37 2022-10-23 stsp 				goto done;
494 13b2bc37 2022-10-23 stsp 		}
495 13b2bc37 2022-10-23 stsp 		err = got_packfile_open_object(&obj, pack, packidx, idx, id);
496 13b2bc37 2022-10-23 stsp 		if (err)
497 13b2bc37 2022-10-23 stsp 			goto done;
498 13b2bc37 2022-10-23 stsp 		err = got_packfile_extract_object_to_mem(&buf, &len,
499 13b2bc37 2022-10-23 stsp 		    obj, pack);
500 13b2bc37 2022-10-23 stsp 		got_object_close(obj);
501 13b2bc37 2022-10-23 stsp 		if (err)
502 13b2bc37 2022-10-23 stsp 			goto done;
503 13b2bc37 2022-10-23 stsp 		err = got_object_parse_tree(&entries, &nentries,
504 13b2bc37 2022-10-23 stsp 		    &nentries_alloc, buf, len);
505 13b2bc37 2022-10-23 stsp 		if (err)
506 13b2bc37 2022-10-23 stsp 			goto done;
507 13b2bc37 2022-10-23 stsp 	} else if (err->code == GOT_ERR_NO_OBJ) {
508 13b2bc37 2022-10-23 stsp 		int fd;
509 13b2bc37 2022-10-23 stsp 
510 13b2bc37 2022-10-23 stsp 		err = got_object_open_loose_fd(&fd, id, repo);
511 13b2bc37 2022-10-23 stsp 		if (err)
512 13b2bc37 2022-10-23 stsp 			return err;
513 13b2bc37 2022-10-23 stsp 		err = got_object_read_tree(&entries, &nentries,
514 13b2bc37 2022-10-23 stsp 		    &nentries_alloc, &buf, fd, id);
515 13b2bc37 2022-10-23 stsp 		if (close(fd) == -1 && err == NULL)
516 13b2bc37 2022-10-23 stsp 			err = got_error_from_errno("close");
517 13b2bc37 2022-10-23 stsp 		if (err)
518 13b2bc37 2022-10-23 stsp 			goto done;
519 13b2bc37 2022-10-23 stsp 	} else
520 13b2bc37 2022-10-23 stsp 		goto done;
521 13b2bc37 2022-10-23 stsp 
522 13b2bc37 2022-10-23 stsp 	*tree = malloc(sizeof(**tree));
523 13b2bc37 2022-10-23 stsp 	if (*tree == NULL) {
524 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("malloc");
525 13b2bc37 2022-10-23 stsp 		goto done;
526 13b2bc37 2022-10-23 stsp 	}
527 13b2bc37 2022-10-23 stsp 	(*tree)->entries = calloc(nentries, sizeof(struct got_tree_entry));
528 13b2bc37 2022-10-23 stsp 	if ((*tree)->entries == NULL) {
529 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("malloc");
530 13b2bc37 2022-10-23 stsp 		goto done;
531 13b2bc37 2022-10-23 stsp 	}
532 13b2bc37 2022-10-23 stsp 	(*tree)->nentries = nentries;
533 13b2bc37 2022-10-23 stsp 	(*tree)->refcnt = 0;
534 13b2bc37 2022-10-23 stsp 
535 13b2bc37 2022-10-23 stsp 	for (i = 0; i < nentries; i++) {
536 13b2bc37 2022-10-23 stsp 		struct got_parsed_tree_entry *pe = &entries[i];
537 13b2bc37 2022-10-23 stsp 		struct got_tree_entry *te = &(*tree)->entries[i];
538 13b2bc37 2022-10-23 stsp 	
539 13b2bc37 2022-10-23 stsp 		if (strlcpy(te->name, pe->name,
540 13b2bc37 2022-10-23 stsp 		    sizeof(te->name)) >= sizeof(te->name)) {
541 13b2bc37 2022-10-23 stsp 			err = got_error(GOT_ERR_NO_SPACE);
542 13b2bc37 2022-10-23 stsp 			goto done;
543 13b2bc37 2022-10-23 stsp 		}
544 3093e2d7 2023-02-04 op 		memcpy(te->id.hash, pe->id, SHA1_DIGEST_LENGTH);
545 13b2bc37 2022-10-23 stsp 		te->mode = pe->mode;
546 13b2bc37 2022-10-23 stsp 		te->idx = i;
547 13b2bc37 2022-10-23 stsp 	}
548 13b2bc37 2022-10-23 stsp done:
549 13b2bc37 2022-10-23 stsp 	free(path_packfile);
550 13b2bc37 2022-10-23 stsp 	free(entries);
551 13b2bc37 2022-10-23 stsp 	free(buf);
552 13b2bc37 2022-10-23 stsp 	if (err == NULL) {
553 13b2bc37 2022-10-23 stsp 		(*tree)->refcnt++;
554 13b2bc37 2022-10-23 stsp 		err = got_repo_cache_tree(repo, id, *tree);
555 13b2bc37 2022-10-23 stsp 		if (err) {
556 13b2bc37 2022-10-23 stsp 			if (err->code == GOT_ERR_OBJ_EXISTS ||
557 13b2bc37 2022-10-23 stsp 			    err->code == GOT_ERR_OBJ_TOO_LARGE)
558 13b2bc37 2022-10-23 stsp 				err = NULL;
559 13b2bc37 2022-10-23 stsp 		}
560 13b2bc37 2022-10-23 stsp 	}
561 13b2bc37 2022-10-23 stsp 	if (err) {
562 13b2bc37 2022-10-23 stsp 		if (*tree)
563 13b2bc37 2022-10-23 stsp 			free((*tree)->entries);
564 13b2bc37 2022-10-23 stsp 		free(*tree);
565 13b2bc37 2022-10-23 stsp 		*tree = NULL;
566 13b2bc37 2022-10-23 stsp 	}
567 13b2bc37 2022-10-23 stsp 	return err;
568 13b2bc37 2022-10-23 stsp }
569 13b2bc37 2022-10-23 stsp 
570 13b2bc37 2022-10-23 stsp const struct got_error *
571 13b2bc37 2022-10-23 stsp got_object_open_as_tree(struct got_tree_object **tree,
572 13b2bc37 2022-10-23 stsp     struct got_repository *repo, struct got_object_id *id)
573 13b2bc37 2022-10-23 stsp {
574 13b2bc37 2022-10-23 stsp 	*tree = got_repo_get_cached_tree(repo, id);
575 13b2bc37 2022-10-23 stsp 	if (*tree != NULL) {
576 13b2bc37 2022-10-23 stsp 		(*tree)->refcnt++;
577 13b2bc37 2022-10-23 stsp 		return NULL;
578 13b2bc37 2022-10-23 stsp 	}
579 13b2bc37 2022-10-23 stsp 
580 13b2bc37 2022-10-23 stsp 	return open_tree(tree, repo, id, 0);
581 13b2bc37 2022-10-23 stsp }
582 13b2bc37 2022-10-23 stsp 
583 13b2bc37 2022-10-23 stsp const struct got_error *
584 13b2bc37 2022-10-23 stsp got_object_tree_open(struct got_tree_object **tree,
585 13b2bc37 2022-10-23 stsp     struct got_repository *repo, struct got_object *obj)
586 13b2bc37 2022-10-23 stsp {
587 13b2bc37 2022-10-23 stsp 	return open_tree(tree, repo, got_object_get_id(obj), 1);
588 13b2bc37 2022-10-23 stsp }
589 13b2bc37 2022-10-23 stsp 
590 13b2bc37 2022-10-23 stsp const struct got_error *
591 13b2bc37 2022-10-23 stsp got_object_open_as_blob(struct got_blob_object **blob,
592 13b2bc37 2022-10-23 stsp     struct got_repository *repo, struct got_object_id *id, size_t blocksize,
593 13b2bc37 2022-10-23 stsp     int outfd)
594 13b2bc37 2022-10-23 stsp {
595 13b2bc37 2022-10-23 stsp 	return got_error(GOT_ERR_NOT_IMPL);
596 13b2bc37 2022-10-23 stsp }
597 13b2bc37 2022-10-23 stsp 
598 13b2bc37 2022-10-23 stsp const struct got_error *
599 13b2bc37 2022-10-23 stsp got_object_blob_open(struct got_blob_object **blob,
600 13b2bc37 2022-10-23 stsp     struct got_repository *repo, struct got_object *obj, size_t blocksize,
601 13b2bc37 2022-10-23 stsp     int outfd)
602 13b2bc37 2022-10-23 stsp {
603 13b2bc37 2022-10-23 stsp 	return got_error(GOT_ERR_NOT_IMPL);
604 13b2bc37 2022-10-23 stsp }
605 13b2bc37 2022-10-23 stsp 
606 13b2bc37 2022-10-23 stsp static const struct got_error *
607 13b2bc37 2022-10-23 stsp open_tag(struct got_tag_object **tag, struct got_repository *repo,
608 13b2bc37 2022-10-23 stsp     struct got_object_id *id, int check_cache)
609 13b2bc37 2022-10-23 stsp {
610 13b2bc37 2022-10-23 stsp 	const struct got_error *err = NULL;
611 13b2bc37 2022-10-23 stsp 	struct got_packidx *packidx = NULL;
612 13b2bc37 2022-10-23 stsp 	int idx;
613 13b2bc37 2022-10-23 stsp 	char *path_packfile = NULL;
614 13b2bc37 2022-10-23 stsp 	struct got_object *obj = NULL;
615 13b2bc37 2022-10-23 stsp 	int obj_type = GOT_OBJ_TYPE_ANY;
616 13b2bc37 2022-10-23 stsp 
617 13b2bc37 2022-10-23 stsp 	if (check_cache) {
618 13b2bc37 2022-10-23 stsp 		*tag = got_repo_get_cached_tag(repo, id);
619 13b2bc37 2022-10-23 stsp 		if (*tag != NULL) {
620 13b2bc37 2022-10-23 stsp 			(*tag)->refcnt++;
621 13b2bc37 2022-10-23 stsp 			return NULL;
622 13b2bc37 2022-10-23 stsp 		}
623 13b2bc37 2022-10-23 stsp 	} else
624 13b2bc37 2022-10-23 stsp 		*tag = NULL;
625 13b2bc37 2022-10-23 stsp 
626 13b2bc37 2022-10-23 stsp 	err = got_repo_search_packidx(&packidx, &idx, repo, id);
627 13b2bc37 2022-10-23 stsp 	if (err == NULL) {
628 13b2bc37 2022-10-23 stsp 		struct got_pack *pack = NULL;
629 13b2bc37 2022-10-23 stsp 		uint8_t *buf = NULL;
630 13b2bc37 2022-10-23 stsp 		size_t len;
631 13b2bc37 2022-10-23 stsp 
632 13b2bc37 2022-10-23 stsp 		err = got_packidx_get_packfile_path(&path_packfile,
633 13b2bc37 2022-10-23 stsp 		    packidx->path_packidx);
634 13b2bc37 2022-10-23 stsp 		if (err)
635 13b2bc37 2022-10-23 stsp 			return err;
636 13b2bc37 2022-10-23 stsp 
637 13b2bc37 2022-10-23 stsp 		pack = got_repo_get_cached_pack(repo, path_packfile);
638 13b2bc37 2022-10-23 stsp 		if (pack == NULL) {
639 13b2bc37 2022-10-23 stsp 			err = got_repo_cache_pack(&pack, repo, path_packfile,
640 13b2bc37 2022-10-23 stsp 			    packidx);
641 13b2bc37 2022-10-23 stsp 			if (err)
642 13b2bc37 2022-10-23 stsp 				goto done;
643 13b2bc37 2022-10-23 stsp 		}
644 13b2bc37 2022-10-23 stsp 
645 13b2bc37 2022-10-23 stsp 		/* Beware of "lightweight" tags: Check object type first. */
646 13b2bc37 2022-10-23 stsp 		err = got_packfile_open_object(&obj, pack, packidx, idx, id);
647 13b2bc37 2022-10-23 stsp 		if (err)
648 13b2bc37 2022-10-23 stsp 			goto done;
649 13b2bc37 2022-10-23 stsp 		obj_type = obj->type;
650 13b2bc37 2022-10-23 stsp 		if (obj_type != GOT_OBJ_TYPE_TAG) {
651 13b2bc37 2022-10-23 stsp 			err = got_error(GOT_ERR_OBJ_TYPE);
652 13b2bc37 2022-10-23 stsp 			got_object_close(obj);
653 13b2bc37 2022-10-23 stsp 			goto done;
654 13b2bc37 2022-10-23 stsp 		}
655 13b2bc37 2022-10-23 stsp 		err = got_packfile_extract_object_to_mem(&buf, &len,
656 13b2bc37 2022-10-23 stsp 		    obj, pack);
657 13b2bc37 2022-10-23 stsp 		got_object_close(obj);
658 13b2bc37 2022-10-23 stsp 		if (err)
659 13b2bc37 2022-10-23 stsp 			goto done;
660 13b2bc37 2022-10-23 stsp 		err = got_object_parse_tag(tag, buf, len);
661 13b2bc37 2022-10-23 stsp 		free(buf);
662 13b2bc37 2022-10-23 stsp 	} else if (err->code == GOT_ERR_NO_OBJ) {
663 13b2bc37 2022-10-23 stsp 		int fd;
664 13b2bc37 2022-10-23 stsp 
665 13b2bc37 2022-10-23 stsp 		err = got_object_open_loose_fd(&fd, id, repo);
666 13b2bc37 2022-10-23 stsp 		if (err)
667 13b2bc37 2022-10-23 stsp 			return err;
668 13b2bc37 2022-10-23 stsp 		err = got_object_read_header(&obj, fd);
669 13b2bc37 2022-10-23 stsp 		if (close(fd) == -1 && err == NULL)
670 13b2bc37 2022-10-23 stsp 			err = got_error_from_errno("close");
671 13b2bc37 2022-10-23 stsp 		if (err)
672 13b2bc37 2022-10-23 stsp 			return err;
673 13b2bc37 2022-10-23 stsp 		obj_type = obj->type;
674 13b2bc37 2022-10-23 stsp 		got_object_close(obj);
675 13b2bc37 2022-10-23 stsp 		if (obj_type != GOT_OBJ_TYPE_TAG)
676 13b2bc37 2022-10-23 stsp 			return got_error(GOT_ERR_OBJ_TYPE);
677 13b2bc37 2022-10-23 stsp 
678 13b2bc37 2022-10-23 stsp 		err = got_object_open_loose_fd(&fd, id, repo);
679 13b2bc37 2022-10-23 stsp 		if (err)
680 13b2bc37 2022-10-23 stsp 			return err;
681 13b2bc37 2022-10-23 stsp 		err = got_object_read_tag(tag, fd, id, 0);
682 13b2bc37 2022-10-23 stsp 		if (close(fd) == -1 && err == NULL)
683 13b2bc37 2022-10-23 stsp 			err = got_error_from_errno("close");
684 13b2bc37 2022-10-23 stsp 		if (err)
685 13b2bc37 2022-10-23 stsp 			return err;
686 13b2bc37 2022-10-23 stsp 	}
687 13b2bc37 2022-10-23 stsp 
688 13b2bc37 2022-10-23 stsp 	if (err == NULL) {
689 13b2bc37 2022-10-23 stsp 		(*tag)->refcnt++;
690 13b2bc37 2022-10-23 stsp 		err = got_repo_cache_tag(repo, id, *tag);
691 13b2bc37 2022-10-23 stsp 		if (err) {
692 13b2bc37 2022-10-23 stsp 			if (err->code == GOT_ERR_OBJ_EXISTS ||
693 13b2bc37 2022-10-23 stsp 			    err->code == GOT_ERR_OBJ_TOO_LARGE)
694 13b2bc37 2022-10-23 stsp 				err = NULL;
695 13b2bc37 2022-10-23 stsp 		}
696 13b2bc37 2022-10-23 stsp 	}
697 13b2bc37 2022-10-23 stsp done:
698 13b2bc37 2022-10-23 stsp 	free(path_packfile);
699 13b2bc37 2022-10-23 stsp 	return err;
700 13b2bc37 2022-10-23 stsp }
701 13b2bc37 2022-10-23 stsp 
702 13b2bc37 2022-10-23 stsp const struct got_error *
703 13b2bc37 2022-10-23 stsp got_object_open_as_tag(struct got_tag_object **tag,
704 13b2bc37 2022-10-23 stsp     struct got_repository *repo, struct got_object_id *id)
705 13b2bc37 2022-10-23 stsp {
706 13b2bc37 2022-10-23 stsp 	*tag = got_repo_get_cached_tag(repo, id);
707 13b2bc37 2022-10-23 stsp 	if (*tag != NULL) {
708 13b2bc37 2022-10-23 stsp 		(*tag)->refcnt++;
709 13b2bc37 2022-10-23 stsp 		return NULL;
710 13b2bc37 2022-10-23 stsp 	}
711 13b2bc37 2022-10-23 stsp 
712 13b2bc37 2022-10-23 stsp 	return open_tag(tag, repo, id, 0);
713 13b2bc37 2022-10-23 stsp }
714 13b2bc37 2022-10-23 stsp 
715 13b2bc37 2022-10-23 stsp const struct got_error *
716 13b2bc37 2022-10-23 stsp got_object_tag_open(struct got_tag_object **tag,
717 13b2bc37 2022-10-23 stsp     struct got_repository *repo, struct got_object *obj)
718 13b2bc37 2022-10-23 stsp {
719 13b2bc37 2022-10-23 stsp 	return open_tag(tag, repo, got_object_get_id(obj), 1);
720 13b2bc37 2022-10-23 stsp }