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/tree.h>
 19 3efd8e31 2022-10-23 thomas #include <sys/stat.h>
 20 3efd8e31 2022-10-23 thomas 
 21 3efd8e31 2022-10-23 thomas #include <errno.h>
 22 3efd8e31 2022-10-23 thomas #include <limits.h>
 23 3efd8e31 2022-10-23 thomas #include <sha1.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 3efd8e31 2022-10-23 thomas 	return got_error(GOT_ERR_NOT_IMPL);
 89 3efd8e31 2022-10-23 thomas }
 90 3efd8e31 2022-10-23 thomas 
 91 3efd8e31 2022-10-23 thomas const struct got_error *
 92 3efd8e31 2022-10-23 thomas got_object_read_raw_delta(uint64_t *base_size, uint64_t *result_size,
 93 3efd8e31 2022-10-23 thomas     off_t *delta_size, off_t *delta_compressed_size, off_t *delta_offset,
 94 3efd8e31 2022-10-23 thomas     off_t *delta_out_offset, struct got_object_id **base_id, int delta_cache_fd,
 95 3efd8e31 2022-10-23 thomas     struct got_packidx *packidx, int obj_idx, struct got_object_id *id,
 96 3efd8e31 2022-10-23 thomas     struct got_repository *repo)
 97 3efd8e31 2022-10-23 thomas {
 98 3efd8e31 2022-10-23 thomas 	return got_error(GOT_ERR_NOT_IMPL);
 99 3efd8e31 2022-10-23 thomas }
100 3efd8e31 2022-10-23 thomas 
101 3efd8e31 2022-10-23 thomas const struct got_error *
102 3efd8e31 2022-10-23 thomas got_object_open(struct got_object **obj, struct got_repository *repo,
103 3efd8e31 2022-10-23 thomas     struct got_object_id *id)
104 3efd8e31 2022-10-23 thomas {
105 3efd8e31 2022-10-23 thomas 	const struct got_error *err = NULL;
106 3efd8e31 2022-10-23 thomas 	int fd;
107 3efd8e31 2022-10-23 thomas 
108 3efd8e31 2022-10-23 thomas 	*obj = got_repo_get_cached_object(repo, id);
109 3efd8e31 2022-10-23 thomas 	if (*obj != NULL) {
110 3efd8e31 2022-10-23 thomas 		(*obj)->refcnt++;
111 3efd8e31 2022-10-23 thomas 		return NULL;
112 3efd8e31 2022-10-23 thomas 	}
113 3efd8e31 2022-10-23 thomas 
114 3efd8e31 2022-10-23 thomas 	err = got_object_open_packed(obj, id, repo);
115 3efd8e31 2022-10-23 thomas 	if (err) {
116 3efd8e31 2022-10-23 thomas 		if (err->code != GOT_ERR_NO_OBJ)
117 3efd8e31 2022-10-23 thomas 			return err;
118 3efd8e31 2022-10-23 thomas 	} else
119 3efd8e31 2022-10-23 thomas 		return NULL;
120 3efd8e31 2022-10-23 thomas 
121 3efd8e31 2022-10-23 thomas 	err = got_object_open_loose_fd(&fd, id, repo);
122 3efd8e31 2022-10-23 thomas 	if (err) {
123 3efd8e31 2022-10-23 thomas 		if (err->code == GOT_ERR_ERRNO && errno == ENOENT)
124 3efd8e31 2022-10-23 thomas 			err = got_error_no_obj(id);
125 3efd8e31 2022-10-23 thomas 		return err;
126 3efd8e31 2022-10-23 thomas 	}
127 3efd8e31 2022-10-23 thomas 
128 3efd8e31 2022-10-23 thomas 	err = got_object_read_header(obj, fd);
129 3efd8e31 2022-10-23 thomas 	if (err)
130 3efd8e31 2022-10-23 thomas 		goto done;
131 3efd8e31 2022-10-23 thomas 
132 3efd8e31 2022-10-23 thomas 	memcpy(&(*obj)->id, id, sizeof((*obj)->id));
133 3efd8e31 2022-10-23 thomas 	(*obj)->refcnt++;
134 3efd8e31 2022-10-23 thomas 
135 3efd8e31 2022-10-23 thomas 	err = got_repo_cache_object(repo, id, *obj);
136 3efd8e31 2022-10-23 thomas 	if (err) {
137 3efd8e31 2022-10-23 thomas 		if (err->code == GOT_ERR_OBJ_EXISTS ||
138 3efd8e31 2022-10-23 thomas 		    err->code == GOT_ERR_OBJ_TOO_LARGE)
139 3efd8e31 2022-10-23 thomas 			err = NULL;
140 3efd8e31 2022-10-23 thomas 	}
141 3efd8e31 2022-10-23 thomas done:
142 3efd8e31 2022-10-23 thomas 	if (close(fd) == -1 && err == NULL)
143 3efd8e31 2022-10-23 thomas 		err = got_error_from_errno("close");
144 3efd8e31 2022-10-23 thomas 	return err;
145 3efd8e31 2022-10-23 thomas }
146 3efd8e31 2022-10-23 thomas 
147 3efd8e31 2022-10-23 thomas static const struct got_error *
148 3efd8e31 2022-10-23 thomas wrap_fd(FILE **f, int wrapped_fd)
149 3efd8e31 2022-10-23 thomas {
150 3efd8e31 2022-10-23 thomas 	const struct got_error *err = NULL;
151 3efd8e31 2022-10-23 thomas 	int fd;
152 3efd8e31 2022-10-23 thomas 
153 3efd8e31 2022-10-23 thomas 	if (ftruncate(wrapped_fd, 0L) == -1)
154 3efd8e31 2022-10-23 thomas 		return got_error_from_errno("ftruncate");
155 3efd8e31 2022-10-23 thomas 
156 3efd8e31 2022-10-23 thomas 	if (lseek(wrapped_fd, 0L, SEEK_SET) == -1)
157 3efd8e31 2022-10-23 thomas 		return got_error_from_errno("lseek");
158 3efd8e31 2022-10-23 thomas 
159 3efd8e31 2022-10-23 thomas 	fd = dup(wrapped_fd);
160 3efd8e31 2022-10-23 thomas 	if (fd == -1)
161 3efd8e31 2022-10-23 thomas 		return got_error_from_errno("dup");
162 3efd8e31 2022-10-23 thomas 
163 3efd8e31 2022-10-23 thomas 	*f = fdopen(fd, "w+");
164 3efd8e31 2022-10-23 thomas 	if (*f == NULL) {
165 3efd8e31 2022-10-23 thomas 		err = got_error_from_errno("fdopen");
166 3efd8e31 2022-10-23 thomas 		close(fd);
167 3efd8e31 2022-10-23 thomas 	}
168 3efd8e31 2022-10-23 thomas 	return err;
169 3efd8e31 2022-10-23 thomas }
170 3efd8e31 2022-10-23 thomas 
171 3efd8e31 2022-10-23 thomas static const struct got_error *
172 3efd8e31 2022-10-23 thomas read_packed_object_raw(uint8_t **outbuf, off_t *size, size_t *hdrlen,
173 3efd8e31 2022-10-23 thomas     int outfd, struct got_pack *pack, struct got_packidx *packidx, int idx,
174 3efd8e31 2022-10-23 thomas     struct got_object_id *id)
175 3efd8e31 2022-10-23 thomas {
176 3efd8e31 2022-10-23 thomas 	const struct got_error *err = NULL;
177 3efd8e31 2022-10-23 thomas 	uint64_t raw_size = 0;
178 3efd8e31 2022-10-23 thomas 	struct got_object *obj;
179 3efd8e31 2022-10-23 thomas 	FILE *outfile = NULL, *basefile = NULL, *accumfile = NULL;
180 3efd8e31 2022-10-23 thomas 
181 3efd8e31 2022-10-23 thomas 	*outbuf = NULL;
182 3efd8e31 2022-10-23 thomas 	*size = 0;
183 3efd8e31 2022-10-23 thomas 	*hdrlen = 0;
184 3efd8e31 2022-10-23 thomas 
185 3efd8e31 2022-10-23 thomas 	err = got_packfile_open_object(&obj, pack, packidx, idx, id);
186 3efd8e31 2022-10-23 thomas 	if (err)
187 3efd8e31 2022-10-23 thomas 		return err;
188 3efd8e31 2022-10-23 thomas 
189 3efd8e31 2022-10-23 thomas 	if (obj->flags & GOT_OBJ_FLAG_DELTIFIED) {
190 3efd8e31 2022-10-23 thomas 		err = got_pack_get_max_delta_object_size(&raw_size, obj, pack);
191 3efd8e31 2022-10-23 thomas 		if (err)
192 3efd8e31 2022-10-23 thomas 			goto done;
193 3efd8e31 2022-10-23 thomas 	} else
194 3efd8e31 2022-10-23 thomas 		raw_size = obj->size;
195 3efd8e31 2022-10-23 thomas 
196 3efd8e31 2022-10-23 thomas 	if (raw_size <= GOT_DELTA_RESULT_SIZE_CACHED_MAX) {
197 3efd8e31 2022-10-23 thomas 		size_t len;
198 3efd8e31 2022-10-23 thomas 		err = got_packfile_extract_object_to_mem(outbuf, &len,
199 3efd8e31 2022-10-23 thomas 		    obj, pack);
200 3efd8e31 2022-10-23 thomas 		if (err)
201 3efd8e31 2022-10-23 thomas 			goto done;
202 3efd8e31 2022-10-23 thomas 		*size = (off_t)len;
203 3efd8e31 2022-10-23 thomas 	} else {
204 3efd8e31 2022-10-23 thomas 		/*
205 3efd8e31 2022-10-23 thomas 		 * XXX This uses 3 file extra descriptors for no good reason.
206 3efd8e31 2022-10-23 thomas 		 * We should have got_packfile_extract_object_to_fd().
207 3efd8e31 2022-10-23 thomas 		 */
208 3efd8e31 2022-10-23 thomas 		err = wrap_fd(&outfile, outfd);
209 3efd8e31 2022-10-23 thomas 		if (err)
210 3efd8e31 2022-10-23 thomas 			goto done;
211 3efd8e31 2022-10-23 thomas 		err = wrap_fd(&basefile, pack->basefd);
212 3efd8e31 2022-10-23 thomas 		if (err)
213 3efd8e31 2022-10-23 thomas 			goto done;
214 3efd8e31 2022-10-23 thomas 		err = wrap_fd(&accumfile, pack->accumfd);
215 3efd8e31 2022-10-23 thomas 		if (err)
216 3efd8e31 2022-10-23 thomas 			goto done;
217 3efd8e31 2022-10-23 thomas 		err = got_packfile_extract_object(pack, obj, outfile, basefile,
218 3efd8e31 2022-10-23 thomas 		    accumfile);
219 3efd8e31 2022-10-23 thomas 		if (err)
220 3efd8e31 2022-10-23 thomas 			goto done;
221 b296ac1c 2023-01-09 thomas 		*size = obj->size;
222 3efd8e31 2022-10-23 thomas 	}
223 3efd8e31 2022-10-23 thomas 
224 3efd8e31 2022-10-23 thomas 	*hdrlen = obj->hdrlen;
225 3efd8e31 2022-10-23 thomas done:
226 3efd8e31 2022-10-23 thomas 	got_object_close(obj);
227 3efd8e31 2022-10-23 thomas 	if (outfile && fclose(outfile) == EOF && err == NULL)
228 3efd8e31 2022-10-23 thomas 		err = got_error_from_errno("fclose");
229 3efd8e31 2022-10-23 thomas 	if (basefile && fclose(basefile) == EOF && err == NULL)
230 3efd8e31 2022-10-23 thomas 		err = got_error_from_errno("fclose");
231 3efd8e31 2022-10-23 thomas 	if (accumfile && fclose(accumfile) == EOF && err == NULL)
232 3efd8e31 2022-10-23 thomas 		err = got_error_from_errno("fclose");
233 3efd8e31 2022-10-23 thomas 	return err;
234 3efd8e31 2022-10-23 thomas 
235 3efd8e31 2022-10-23 thomas }
236 3efd8e31 2022-10-23 thomas 
237 3efd8e31 2022-10-23 thomas static void
238 3efd8e31 2022-10-23 thomas put_raw_object_tempfile(struct got_raw_object *obj)
239 3efd8e31 2022-10-23 thomas {
240 3efd8e31 2022-10-23 thomas 	struct got_repository *repo = obj->close_arg;
241 3efd8e31 2022-10-23 thomas 
242 3efd8e31 2022-10-23 thomas 	if (obj->tempfile_idx != -1)
243 3efd8e31 2022-10-23 thomas 		got_repo_temp_fds_put(obj->tempfile_idx, repo);
244 3efd8e31 2022-10-23 thomas }
245 3efd8e31 2022-10-23 thomas 
246 3efd8e31 2022-10-23 thomas /* *outfd must be initialized to -1 by caller */
247 3efd8e31 2022-10-23 thomas const struct got_error *
248 3efd8e31 2022-10-23 thomas got_object_raw_open(struct got_raw_object **obj, int *outfd,
249 3efd8e31 2022-10-23 thomas     struct got_repository *repo, struct got_object_id *id)
250 3efd8e31 2022-10-23 thomas {
251 3efd8e31 2022-10-23 thomas 	const struct got_error *err = NULL;
252 3efd8e31 2022-10-23 thomas 	struct got_packidx *packidx = NULL;
253 ab9f7b87 2023-01-09 thomas 	int idx, tempfd, tempfile_idx;
254 3efd8e31 2022-10-23 thomas 	uint8_t *outbuf = NULL;
255 3efd8e31 2022-10-23 thomas 	off_t size = 0;
256 3efd8e31 2022-10-23 thomas 	size_t hdrlen = 0;
257 3efd8e31 2022-10-23 thomas 	char *path_packfile = NULL;
258 3efd8e31 2022-10-23 thomas 
259 3efd8e31 2022-10-23 thomas 	*obj = got_repo_get_cached_raw_object(repo, id);
260 3efd8e31 2022-10-23 thomas 	if (*obj != NULL) {
261 3efd8e31 2022-10-23 thomas 		(*obj)->refcnt++;
262 3efd8e31 2022-10-23 thomas 		return NULL;
263 3efd8e31 2022-10-23 thomas 	}
264 3efd8e31 2022-10-23 thomas 
265 ab9f7b87 2023-01-09 thomas 	err = got_repo_temp_fds_get(&tempfd, &tempfile_idx, repo);
266 ab9f7b87 2023-01-09 thomas 	if (err)
267 ab9f7b87 2023-01-09 thomas 		return err;
268 3efd8e31 2022-10-23 thomas 
269 3efd8e31 2022-10-23 thomas 	err = got_repo_search_packidx(&packidx, &idx, repo, id);
270 3efd8e31 2022-10-23 thomas 	if (err == NULL) {
271 3efd8e31 2022-10-23 thomas 		struct got_pack *pack = NULL;
272 3efd8e31 2022-10-23 thomas 
273 3efd8e31 2022-10-23 thomas 		err = got_packidx_get_packfile_path(&path_packfile,
274 3efd8e31 2022-10-23 thomas 		    packidx->path_packidx);
275 3efd8e31 2022-10-23 thomas 		if (err)
276 3efd8e31 2022-10-23 thomas 			goto done;
277 3efd8e31 2022-10-23 thomas 
278 3efd8e31 2022-10-23 thomas 		pack = got_repo_get_cached_pack(repo, path_packfile);
279 3efd8e31 2022-10-23 thomas 		if (pack == NULL) {
280 3efd8e31 2022-10-23 thomas 			err = got_repo_cache_pack(&pack, repo, path_packfile,
281 3efd8e31 2022-10-23 thomas 			    packidx);
282 3efd8e31 2022-10-23 thomas 			if (err)
283 3efd8e31 2022-10-23 thomas 				goto done;
284 3efd8e31 2022-10-23 thomas 		}
285 3efd8e31 2022-10-23 thomas 		err = read_packed_object_raw(&outbuf, &size, &hdrlen,
286 ab9f7b87 2023-01-09 thomas 		    tempfd, pack, packidx, idx, id);
287 3efd8e31 2022-10-23 thomas 		if (err)
288 3efd8e31 2022-10-23 thomas 			goto done;
289 3efd8e31 2022-10-23 thomas 	} else if (err->code == GOT_ERR_NO_OBJ) {
290 3efd8e31 2022-10-23 thomas 		int fd;
291 3efd8e31 2022-10-23 thomas 
292 3efd8e31 2022-10-23 thomas 		err = got_object_open_loose_fd(&fd, id, repo);
293 3efd8e31 2022-10-23 thomas 		if (err)
294 3efd8e31 2022-10-23 thomas 			goto done;
295 3efd8e31 2022-10-23 thomas 		err = got_object_read_raw(&outbuf, &size, &hdrlen,
296 ab9f7b87 2023-01-09 thomas 		    GOT_DELTA_RESULT_SIZE_CACHED_MAX, tempfd, id, fd);
297 3efd8e31 2022-10-23 thomas 		if (close(fd) == -1 && err == NULL)
298 3efd8e31 2022-10-23 thomas 			err = got_error_from_errno("close");
299 3efd8e31 2022-10-23 thomas 		if (err)
300 ab9f7b87 2023-01-09 thomas 			goto done;
301 ab9f7b87 2023-01-09 thomas 	}
302 ab9f7b87 2023-01-09 thomas 
303 ab9f7b87 2023-01-09 thomas 	if (outbuf == NULL) {
304 ab9f7b87 2023-01-09 thomas 		if (*outfd != -1) {
305 ab9f7b87 2023-01-09 thomas 			err = got_error_msg(GOT_ERR_NOT_IMPL, "bad outfd");
306 ab9f7b87 2023-01-09 thomas 			goto done;
307 ab9f7b87 2023-01-09 thomas 		}
308 ab9f7b87 2023-01-09 thomas 
309 ab9f7b87 2023-01-09 thomas 		/*
310 ab9f7b87 2023-01-09 thomas 		 * Duplicate tempfile descriptor to allow use of
311 ab9f7b87 2023-01-09 thomas 		 * fdopen(3) inside got_object_raw_alloc().
312 ab9f7b87 2023-01-09 thomas 		 */
313 ab9f7b87 2023-01-09 thomas 		*outfd = dup(tempfd);
314 ab9f7b87 2023-01-09 thomas 		if (*outfd == -1) {
315 ab9f7b87 2023-01-09 thomas 			err = got_error_from_errno("dup");
316 3efd8e31 2022-10-23 thomas 			goto done;
317 ab9f7b87 2023-01-09 thomas 		}
318 3efd8e31 2022-10-23 thomas 	}
319 3efd8e31 2022-10-23 thomas 
320 ebe6ec92 2023-01-09 thomas 	err = got_object_raw_alloc(obj, outbuf, outfd,
321 ebe6ec92 2023-01-09 thomas 	    GOT_DELTA_RESULT_SIZE_CACHED_MAX, hdrlen, size);
322 3efd8e31 2022-10-23 thomas 	if (err)
323 3efd8e31 2022-10-23 thomas 		goto done;
324 3efd8e31 2022-10-23 thomas 
325 3efd8e31 2022-10-23 thomas 	err = got_repo_cache_raw_object(repo, id, *obj);
326 3efd8e31 2022-10-23 thomas 	if (err) {
327 3efd8e31 2022-10-23 thomas 		if (err->code == GOT_ERR_OBJ_EXISTS ||
328 3efd8e31 2022-10-23 thomas 		    err->code == GOT_ERR_OBJ_TOO_LARGE)
329 3efd8e31 2022-10-23 thomas 			err = NULL;
330 3efd8e31 2022-10-23 thomas 	}
331 3efd8e31 2022-10-23 thomas done:
332 3efd8e31 2022-10-23 thomas 	free(path_packfile);
333 3efd8e31 2022-10-23 thomas 	if (err) {
334 3efd8e31 2022-10-23 thomas 		if (*obj) {
335 3efd8e31 2022-10-23 thomas 			got_object_raw_close(*obj);
336 3efd8e31 2022-10-23 thomas 			*obj = NULL;
337 3efd8e31 2022-10-23 thomas 		}
338 3efd8e31 2022-10-23 thomas 		free(outbuf);
339 ab9f7b87 2023-01-09 thomas 		got_repo_temp_fds_put(tempfile_idx, repo);
340 ab9f7b87 2023-01-09 thomas 		if (*outfd != -1) {
341 ab9f7b87 2023-01-09 thomas 			close(*outfd);
342 ab9f7b87 2023-01-09 thomas 			*outfd = -1;
343 ab9f7b87 2023-01-09 thomas 		}
344 3efd8e31 2022-10-23 thomas 	} else {
345 ab9f7b87 2023-01-09 thomas 		if (((*obj)->f == NULL && (*obj)->fd == -1)) {
346 ab9f7b87 2023-01-09 thomas 			/* This raw object is not backed by a file. */
347 ab9f7b87 2023-01-09 thomas 			got_repo_temp_fds_put(tempfile_idx, repo);
348 ab9f7b87 2023-01-09 thomas 			if (*outfd != -1) {
349 ab9f7b87 2023-01-09 thomas 				close(*outfd);
350 ab9f7b87 2023-01-09 thomas 				*outfd = -1;
351 ab9f7b87 2023-01-09 thomas 			}
352 ab9f7b87 2023-01-09 thomas 		} else {
353 ab9f7b87 2023-01-09 thomas 			(*obj)->tempfile_idx = tempfile_idx;
354 ab9f7b87 2023-01-09 thomas 			(*obj)->close_cb = put_raw_object_tempfile;
355 ab9f7b87 2023-01-09 thomas 			(*obj)->close_arg = repo;
356 ab9f7b87 2023-01-09 thomas 		}
357 3efd8e31 2022-10-23 thomas 	}
358 3efd8e31 2022-10-23 thomas 	return err;
359 3efd8e31 2022-10-23 thomas }
360 3efd8e31 2022-10-23 thomas 
361 3efd8e31 2022-10-23 thomas static const struct got_error *
362 3efd8e31 2022-10-23 thomas open_commit(struct got_commit_object **commit,
363 3efd8e31 2022-10-23 thomas     struct got_repository *repo, struct got_object_id *id, int check_cache)
364 3efd8e31 2022-10-23 thomas {
365 3efd8e31 2022-10-23 thomas 	const struct got_error *err = NULL;
366 3efd8e31 2022-10-23 thomas 	struct got_packidx *packidx = NULL;
367 3efd8e31 2022-10-23 thomas 	int idx;
368 3efd8e31 2022-10-23 thomas 	char *path_packfile = NULL;
369 3efd8e31 2022-10-23 thomas 
370 3efd8e31 2022-10-23 thomas 	if (check_cache) {
371 3efd8e31 2022-10-23 thomas 		*commit = got_repo_get_cached_commit(repo, id);
372 3efd8e31 2022-10-23 thomas 		if (*commit != NULL) {
373 3efd8e31 2022-10-23 thomas 			(*commit)->refcnt++;
374 3efd8e31 2022-10-23 thomas 			return NULL;
375 3efd8e31 2022-10-23 thomas 		}
376 3efd8e31 2022-10-23 thomas 	} else
377 3efd8e31 2022-10-23 thomas 		*commit = NULL;
378 3efd8e31 2022-10-23 thomas 
379 3efd8e31 2022-10-23 thomas 	err = got_repo_search_packidx(&packidx, &idx, repo, id);
380 3efd8e31 2022-10-23 thomas 	if (err == NULL) {
381 3efd8e31 2022-10-23 thomas 		struct got_pack *pack = NULL;
382 3efd8e31 2022-10-23 thomas 		struct got_object *obj;
383 3efd8e31 2022-10-23 thomas 		uint8_t *buf;
384 3efd8e31 2022-10-23 thomas 		size_t len;
385 3efd8e31 2022-10-23 thomas 
386 3efd8e31 2022-10-23 thomas 		err = got_packidx_get_packfile_path(&path_packfile,
387 3efd8e31 2022-10-23 thomas 		    packidx->path_packidx);
388 3efd8e31 2022-10-23 thomas 		if (err)
389 3efd8e31 2022-10-23 thomas 			return err;
390 3efd8e31 2022-10-23 thomas 
391 3efd8e31 2022-10-23 thomas 		pack = got_repo_get_cached_pack(repo, path_packfile);
392 3efd8e31 2022-10-23 thomas 		if (pack == NULL) {
393 3efd8e31 2022-10-23 thomas 			err = got_repo_cache_pack(&pack, repo, path_packfile,
394 3efd8e31 2022-10-23 thomas 			    packidx);
395 3efd8e31 2022-10-23 thomas 			if (err)
396 3efd8e31 2022-10-23 thomas 				goto done;
397 3efd8e31 2022-10-23 thomas 		}
398 3efd8e31 2022-10-23 thomas 		err = got_packfile_open_object(&obj, pack, packidx, idx, id);
399 3efd8e31 2022-10-23 thomas 		if (err)
400 3efd8e31 2022-10-23 thomas 			goto done;
401 3efd8e31 2022-10-23 thomas 		err = got_packfile_extract_object_to_mem(&buf, &len,
402 3efd8e31 2022-10-23 thomas 		    obj, pack);
403 3efd8e31 2022-10-23 thomas 		got_object_close(obj);
404 3efd8e31 2022-10-23 thomas 		if (err)
405 3efd8e31 2022-10-23 thomas 			goto done;
406 3efd8e31 2022-10-23 thomas 		err = got_object_parse_commit(commit, buf, len);
407 3efd8e31 2022-10-23 thomas 		free(buf);
408 3efd8e31 2022-10-23 thomas 	} else if (err->code == GOT_ERR_NO_OBJ) {
409 3efd8e31 2022-10-23 thomas 		int fd;
410 3efd8e31 2022-10-23 thomas 
411 3efd8e31 2022-10-23 thomas 		err = got_object_open_loose_fd(&fd, id, repo);
412 3efd8e31 2022-10-23 thomas 		if (err)
413 3efd8e31 2022-10-23 thomas 			return err;
414 3efd8e31 2022-10-23 thomas 		err = got_object_read_commit(commit, fd, id, 0);
415 3efd8e31 2022-10-23 thomas 		if (close(fd) == -1 && err == NULL)
416 3efd8e31 2022-10-23 thomas 			err = got_error_from_errno("close");
417 3efd8e31 2022-10-23 thomas 		if (err)
418 3efd8e31 2022-10-23 thomas 			return err;
419 3efd8e31 2022-10-23 thomas 	}
420 3efd8e31 2022-10-23 thomas 
421 3efd8e31 2022-10-23 thomas 	if (err == NULL) {
422 3efd8e31 2022-10-23 thomas 		(*commit)->refcnt++;
423 3efd8e31 2022-10-23 thomas 		err = got_repo_cache_commit(repo, id, *commit);
424 3efd8e31 2022-10-23 thomas 		if (err) {
425 3efd8e31 2022-10-23 thomas 			if (err->code == GOT_ERR_OBJ_EXISTS ||
426 3efd8e31 2022-10-23 thomas 			    err->code == GOT_ERR_OBJ_TOO_LARGE)
427 3efd8e31 2022-10-23 thomas 				err = NULL;
428 3efd8e31 2022-10-23 thomas 		}
429 3efd8e31 2022-10-23 thomas 	}
430 3efd8e31 2022-10-23 thomas done:
431 3efd8e31 2022-10-23 thomas 	free(path_packfile);
432 3efd8e31 2022-10-23 thomas 	return err;
433 3efd8e31 2022-10-23 thomas }
434 3efd8e31 2022-10-23 thomas 
435 3efd8e31 2022-10-23 thomas const struct got_error *
436 3efd8e31 2022-10-23 thomas got_object_open_as_commit(struct got_commit_object **commit,
437 3efd8e31 2022-10-23 thomas     struct got_repository *repo, struct got_object_id *id)
438 3efd8e31 2022-10-23 thomas {
439 3efd8e31 2022-10-23 thomas 	*commit = got_repo_get_cached_commit(repo, id);
440 3efd8e31 2022-10-23 thomas 	if (*commit != NULL) {
441 3efd8e31 2022-10-23 thomas 		(*commit)->refcnt++;
442 3efd8e31 2022-10-23 thomas 		return NULL;
443 3efd8e31 2022-10-23 thomas 	}
444 3efd8e31 2022-10-23 thomas 
445 3efd8e31 2022-10-23 thomas 	return open_commit(commit, repo, id, 0);
446 3efd8e31 2022-10-23 thomas }
447 3efd8e31 2022-10-23 thomas 
448 3efd8e31 2022-10-23 thomas const struct got_error *
449 3efd8e31 2022-10-23 thomas got_object_commit_open(struct got_commit_object **commit,
450 3efd8e31 2022-10-23 thomas     struct got_repository *repo, struct got_object *obj)
451 3efd8e31 2022-10-23 thomas {
452 3efd8e31 2022-10-23 thomas 	return open_commit(commit, repo, got_object_get_id(obj), 1);
453 3efd8e31 2022-10-23 thomas }
454 3efd8e31 2022-10-23 thomas 
455 3efd8e31 2022-10-23 thomas static const struct got_error *
456 3efd8e31 2022-10-23 thomas open_tree(struct got_tree_object **tree,
457 3efd8e31 2022-10-23 thomas     struct got_repository *repo, struct got_object_id *id, int check_cache)
458 3efd8e31 2022-10-23 thomas {
459 3efd8e31 2022-10-23 thomas 	const struct got_error *err = NULL;
460 3efd8e31 2022-10-23 thomas 	struct got_packidx *packidx = NULL;
461 3efd8e31 2022-10-23 thomas 	int idx;
462 3efd8e31 2022-10-23 thomas 	char *path_packfile = NULL;
463 3efd8e31 2022-10-23 thomas 	struct got_parsed_tree_entry *entries = NULL;
464 3efd8e31 2022-10-23 thomas 	size_t nentries = 0, nentries_alloc = 0, i;
465 3efd8e31 2022-10-23 thomas 	uint8_t *buf = NULL;
466 3efd8e31 2022-10-23 thomas 
467 3efd8e31 2022-10-23 thomas 	if (check_cache) {
468 3efd8e31 2022-10-23 thomas 		*tree = got_repo_get_cached_tree(repo, id);
469 3efd8e31 2022-10-23 thomas 		if (*tree != NULL) {
470 3efd8e31 2022-10-23 thomas 			(*tree)->refcnt++;
471 3efd8e31 2022-10-23 thomas 			return NULL;
472 3efd8e31 2022-10-23 thomas 		}
473 3efd8e31 2022-10-23 thomas 	} else
474 3efd8e31 2022-10-23 thomas 		*tree = NULL;
475 3efd8e31 2022-10-23 thomas 
476 3efd8e31 2022-10-23 thomas 	err = got_repo_search_packidx(&packidx, &idx, repo, id);
477 3efd8e31 2022-10-23 thomas 	if (err == NULL) {
478 3efd8e31 2022-10-23 thomas 		struct got_pack *pack = NULL;
479 3efd8e31 2022-10-23 thomas 		struct got_object *obj;
480 3efd8e31 2022-10-23 thomas 		size_t len;
481 3efd8e31 2022-10-23 thomas 
482 3efd8e31 2022-10-23 thomas 		err = got_packidx_get_packfile_path(&path_packfile,
483 3efd8e31 2022-10-23 thomas 		    packidx->path_packidx);
484 3efd8e31 2022-10-23 thomas 		if (err)
485 3efd8e31 2022-10-23 thomas 			return err;
486 3efd8e31 2022-10-23 thomas 
487 3efd8e31 2022-10-23 thomas 		pack = got_repo_get_cached_pack(repo, path_packfile);
488 3efd8e31 2022-10-23 thomas 		if (pack == NULL) {
489 3efd8e31 2022-10-23 thomas 			err = got_repo_cache_pack(&pack, repo, path_packfile,
490 3efd8e31 2022-10-23 thomas 			    packidx);
491 3efd8e31 2022-10-23 thomas 			if (err)
492 3efd8e31 2022-10-23 thomas 				goto done;
493 3efd8e31 2022-10-23 thomas 		}
494 3efd8e31 2022-10-23 thomas 		err = got_packfile_open_object(&obj, pack, packidx, idx, id);
495 3efd8e31 2022-10-23 thomas 		if (err)
496 3efd8e31 2022-10-23 thomas 			goto done;
497 3efd8e31 2022-10-23 thomas 		err = got_packfile_extract_object_to_mem(&buf, &len,
498 3efd8e31 2022-10-23 thomas 		    obj, pack);
499 3efd8e31 2022-10-23 thomas 		got_object_close(obj);
500 3efd8e31 2022-10-23 thomas 		if (err)
501 3efd8e31 2022-10-23 thomas 			goto done;
502 3efd8e31 2022-10-23 thomas 		err = got_object_parse_tree(&entries, &nentries,
503 3efd8e31 2022-10-23 thomas 		    &nentries_alloc, buf, len);
504 3efd8e31 2022-10-23 thomas 		if (err)
505 3efd8e31 2022-10-23 thomas 			goto done;
506 3efd8e31 2022-10-23 thomas 	} else if (err->code == GOT_ERR_NO_OBJ) {
507 3efd8e31 2022-10-23 thomas 		int fd;
508 3efd8e31 2022-10-23 thomas 
509 3efd8e31 2022-10-23 thomas 		err = got_object_open_loose_fd(&fd, id, repo);
510 3efd8e31 2022-10-23 thomas 		if (err)
511 3efd8e31 2022-10-23 thomas 			return err;
512 3efd8e31 2022-10-23 thomas 		err = got_object_read_tree(&entries, &nentries,
513 3efd8e31 2022-10-23 thomas 		    &nentries_alloc, &buf, fd, id);
514 3efd8e31 2022-10-23 thomas 		if (close(fd) == -1 && err == NULL)
515 3efd8e31 2022-10-23 thomas 			err = got_error_from_errno("close");
516 3efd8e31 2022-10-23 thomas 		if (err)
517 3efd8e31 2022-10-23 thomas 			goto done;
518 3efd8e31 2022-10-23 thomas 	} else
519 3efd8e31 2022-10-23 thomas 		goto done;
520 3efd8e31 2022-10-23 thomas 
521 3efd8e31 2022-10-23 thomas 	*tree = malloc(sizeof(**tree));
522 3efd8e31 2022-10-23 thomas 	if (*tree == NULL) {
523 3efd8e31 2022-10-23 thomas 		err = got_error_from_errno("malloc");
524 3efd8e31 2022-10-23 thomas 		goto done;
525 3efd8e31 2022-10-23 thomas 	}
526 3efd8e31 2022-10-23 thomas 	(*tree)->entries = calloc(nentries, sizeof(struct got_tree_entry));
527 3efd8e31 2022-10-23 thomas 	if ((*tree)->entries == NULL) {
528 3efd8e31 2022-10-23 thomas 		err = got_error_from_errno("malloc");
529 3efd8e31 2022-10-23 thomas 		goto done;
530 3efd8e31 2022-10-23 thomas 	}
531 3efd8e31 2022-10-23 thomas 	(*tree)->nentries = nentries;
532 3efd8e31 2022-10-23 thomas 	(*tree)->refcnt = 0;
533 3efd8e31 2022-10-23 thomas 
534 3efd8e31 2022-10-23 thomas 	for (i = 0; i < nentries; i++) {
535 3efd8e31 2022-10-23 thomas 		struct got_parsed_tree_entry *pe = &entries[i];
536 3efd8e31 2022-10-23 thomas 		struct got_tree_entry *te = &(*tree)->entries[i];
537 3efd8e31 2022-10-23 thomas 	
538 3efd8e31 2022-10-23 thomas 		if (strlcpy(te->name, pe->name,
539 3efd8e31 2022-10-23 thomas 		    sizeof(te->name)) >= sizeof(te->name)) {
540 3efd8e31 2022-10-23 thomas 			err = got_error(GOT_ERR_NO_SPACE);
541 3efd8e31 2022-10-23 thomas 			goto done;
542 3efd8e31 2022-10-23 thomas 		}
543 3efd8e31 2022-10-23 thomas 		memcpy(te->id.sha1, pe->id, SHA1_DIGEST_LENGTH);
544 3efd8e31 2022-10-23 thomas 		te->mode = pe->mode;
545 3efd8e31 2022-10-23 thomas 		te->idx = i;
546 3efd8e31 2022-10-23 thomas 	}
547 3efd8e31 2022-10-23 thomas done:
548 3efd8e31 2022-10-23 thomas 	free(path_packfile);
549 3efd8e31 2022-10-23 thomas 	free(entries);
550 3efd8e31 2022-10-23 thomas 	free(buf);
551 3efd8e31 2022-10-23 thomas 	if (err == NULL) {
552 3efd8e31 2022-10-23 thomas 		(*tree)->refcnt++;
553 3efd8e31 2022-10-23 thomas 		err = got_repo_cache_tree(repo, id, *tree);
554 3efd8e31 2022-10-23 thomas 		if (err) {
555 3efd8e31 2022-10-23 thomas 			if (err->code == GOT_ERR_OBJ_EXISTS ||
556 3efd8e31 2022-10-23 thomas 			    err->code == GOT_ERR_OBJ_TOO_LARGE)
557 3efd8e31 2022-10-23 thomas 				err = NULL;
558 3efd8e31 2022-10-23 thomas 		}
559 3efd8e31 2022-10-23 thomas 	}
560 3efd8e31 2022-10-23 thomas 	if (err) {
561 3efd8e31 2022-10-23 thomas 		if (*tree)
562 3efd8e31 2022-10-23 thomas 			free((*tree)->entries);
563 3efd8e31 2022-10-23 thomas 		free(*tree);
564 3efd8e31 2022-10-23 thomas 		*tree = NULL;
565 3efd8e31 2022-10-23 thomas 	}
566 3efd8e31 2022-10-23 thomas 	return err;
567 3efd8e31 2022-10-23 thomas }
568 3efd8e31 2022-10-23 thomas 
569 3efd8e31 2022-10-23 thomas const struct got_error *
570 3efd8e31 2022-10-23 thomas got_object_open_as_tree(struct got_tree_object **tree,
571 3efd8e31 2022-10-23 thomas     struct got_repository *repo, struct got_object_id *id)
572 3efd8e31 2022-10-23 thomas {
573 3efd8e31 2022-10-23 thomas 	*tree = got_repo_get_cached_tree(repo, id);
574 3efd8e31 2022-10-23 thomas 	if (*tree != NULL) {
575 3efd8e31 2022-10-23 thomas 		(*tree)->refcnt++;
576 3efd8e31 2022-10-23 thomas 		return NULL;
577 3efd8e31 2022-10-23 thomas 	}
578 3efd8e31 2022-10-23 thomas 
579 3efd8e31 2022-10-23 thomas 	return open_tree(tree, repo, id, 0);
580 3efd8e31 2022-10-23 thomas }
581 3efd8e31 2022-10-23 thomas 
582 3efd8e31 2022-10-23 thomas const struct got_error *
583 3efd8e31 2022-10-23 thomas got_object_tree_open(struct got_tree_object **tree,
584 3efd8e31 2022-10-23 thomas     struct got_repository *repo, struct got_object *obj)
585 3efd8e31 2022-10-23 thomas {
586 3efd8e31 2022-10-23 thomas 	return open_tree(tree, repo, got_object_get_id(obj), 1);
587 3efd8e31 2022-10-23 thomas }
588 3efd8e31 2022-10-23 thomas 
589 3efd8e31 2022-10-23 thomas const struct got_error *
590 3efd8e31 2022-10-23 thomas got_object_open_as_blob(struct got_blob_object **blob,
591 3efd8e31 2022-10-23 thomas     struct got_repository *repo, struct got_object_id *id, size_t blocksize,
592 3efd8e31 2022-10-23 thomas     int outfd)
593 3efd8e31 2022-10-23 thomas {
594 3efd8e31 2022-10-23 thomas 	return got_error(GOT_ERR_NOT_IMPL);
595 3efd8e31 2022-10-23 thomas }
596 3efd8e31 2022-10-23 thomas 
597 3efd8e31 2022-10-23 thomas const struct got_error *
598 3efd8e31 2022-10-23 thomas got_object_blob_open(struct got_blob_object **blob,
599 3efd8e31 2022-10-23 thomas     struct got_repository *repo, struct got_object *obj, size_t blocksize,
600 3efd8e31 2022-10-23 thomas     int outfd)
601 3efd8e31 2022-10-23 thomas {
602 3efd8e31 2022-10-23 thomas 	return got_error(GOT_ERR_NOT_IMPL);
603 3efd8e31 2022-10-23 thomas }
604 3efd8e31 2022-10-23 thomas 
605 3efd8e31 2022-10-23 thomas static const struct got_error *
606 3efd8e31 2022-10-23 thomas open_tag(struct got_tag_object **tag, struct got_repository *repo,
607 3efd8e31 2022-10-23 thomas     struct got_object_id *id, int check_cache)
608 3efd8e31 2022-10-23 thomas {
609 3efd8e31 2022-10-23 thomas 	const struct got_error *err = NULL;
610 3efd8e31 2022-10-23 thomas 	struct got_packidx *packidx = NULL;
611 3efd8e31 2022-10-23 thomas 	int idx;
612 3efd8e31 2022-10-23 thomas 	char *path_packfile = NULL;
613 3efd8e31 2022-10-23 thomas 	struct got_object *obj = NULL;
614 3efd8e31 2022-10-23 thomas 	int obj_type = GOT_OBJ_TYPE_ANY;
615 3efd8e31 2022-10-23 thomas 
616 3efd8e31 2022-10-23 thomas 	if (check_cache) {
617 3efd8e31 2022-10-23 thomas 		*tag = got_repo_get_cached_tag(repo, id);
618 3efd8e31 2022-10-23 thomas 		if (*tag != NULL) {
619 3efd8e31 2022-10-23 thomas 			(*tag)->refcnt++;
620 3efd8e31 2022-10-23 thomas 			return NULL;
621 3efd8e31 2022-10-23 thomas 		}
622 3efd8e31 2022-10-23 thomas 	} else
623 3efd8e31 2022-10-23 thomas 		*tag = NULL;
624 3efd8e31 2022-10-23 thomas 
625 3efd8e31 2022-10-23 thomas 	err = got_repo_search_packidx(&packidx, &idx, repo, id);
626 3efd8e31 2022-10-23 thomas 	if (err == NULL) {
627 3efd8e31 2022-10-23 thomas 		struct got_pack *pack = NULL;
628 3efd8e31 2022-10-23 thomas 		uint8_t *buf = NULL;
629 3efd8e31 2022-10-23 thomas 		size_t len;
630 3efd8e31 2022-10-23 thomas 
631 3efd8e31 2022-10-23 thomas 		err = got_packidx_get_packfile_path(&path_packfile,
632 3efd8e31 2022-10-23 thomas 		    packidx->path_packidx);
633 3efd8e31 2022-10-23 thomas 		if (err)
634 3efd8e31 2022-10-23 thomas 			return err;
635 3efd8e31 2022-10-23 thomas 
636 3efd8e31 2022-10-23 thomas 		pack = got_repo_get_cached_pack(repo, path_packfile);
637 3efd8e31 2022-10-23 thomas 		if (pack == NULL) {
638 3efd8e31 2022-10-23 thomas 			err = got_repo_cache_pack(&pack, repo, path_packfile,
639 3efd8e31 2022-10-23 thomas 			    packidx);
640 3efd8e31 2022-10-23 thomas 			if (err)
641 3efd8e31 2022-10-23 thomas 				goto done;
642 3efd8e31 2022-10-23 thomas 		}
643 3efd8e31 2022-10-23 thomas 
644 3efd8e31 2022-10-23 thomas 		/* Beware of "lightweight" tags: Check object type first. */
645 3efd8e31 2022-10-23 thomas 		err = got_packfile_open_object(&obj, pack, packidx, idx, id);
646 3efd8e31 2022-10-23 thomas 		if (err)
647 3efd8e31 2022-10-23 thomas 			goto done;
648 3efd8e31 2022-10-23 thomas 		obj_type = obj->type;
649 3efd8e31 2022-10-23 thomas 		if (obj_type != GOT_OBJ_TYPE_TAG) {
650 3efd8e31 2022-10-23 thomas 			err = got_error(GOT_ERR_OBJ_TYPE);
651 3efd8e31 2022-10-23 thomas 			got_object_close(obj);
652 3efd8e31 2022-10-23 thomas 			goto done;
653 3efd8e31 2022-10-23 thomas 		}
654 3efd8e31 2022-10-23 thomas 		err = got_packfile_extract_object_to_mem(&buf, &len,
655 3efd8e31 2022-10-23 thomas 		    obj, pack);
656 3efd8e31 2022-10-23 thomas 		got_object_close(obj);
657 3efd8e31 2022-10-23 thomas 		if (err)
658 3efd8e31 2022-10-23 thomas 			goto done;
659 3efd8e31 2022-10-23 thomas 		err = got_object_parse_tag(tag, buf, len);
660 3efd8e31 2022-10-23 thomas 		free(buf);
661 3efd8e31 2022-10-23 thomas 	} else if (err->code == GOT_ERR_NO_OBJ) {
662 3efd8e31 2022-10-23 thomas 		int fd;
663 3efd8e31 2022-10-23 thomas 
664 3efd8e31 2022-10-23 thomas 		err = got_object_open_loose_fd(&fd, id, repo);
665 3efd8e31 2022-10-23 thomas 		if (err)
666 3efd8e31 2022-10-23 thomas 			return err;
667 3efd8e31 2022-10-23 thomas 		err = got_object_read_header(&obj, fd);
668 3efd8e31 2022-10-23 thomas 		if (close(fd) == -1 && err == NULL)
669 3efd8e31 2022-10-23 thomas 			err = got_error_from_errno("close");
670 3efd8e31 2022-10-23 thomas 		if (err)
671 3efd8e31 2022-10-23 thomas 			return err;
672 3efd8e31 2022-10-23 thomas 		obj_type = obj->type;
673 3efd8e31 2022-10-23 thomas 		got_object_close(obj);
674 3efd8e31 2022-10-23 thomas 		if (obj_type != GOT_OBJ_TYPE_TAG)
675 3efd8e31 2022-10-23 thomas 			return got_error(GOT_ERR_OBJ_TYPE);
676 3efd8e31 2022-10-23 thomas 
677 3efd8e31 2022-10-23 thomas 		err = got_object_open_loose_fd(&fd, id, repo);
678 3efd8e31 2022-10-23 thomas 		if (err)
679 3efd8e31 2022-10-23 thomas 			return err;
680 3efd8e31 2022-10-23 thomas 		err = got_object_read_tag(tag, fd, id, 0);
681 3efd8e31 2022-10-23 thomas 		if (close(fd) == -1 && err == NULL)
682 3efd8e31 2022-10-23 thomas 			err = got_error_from_errno("close");
683 3efd8e31 2022-10-23 thomas 		if (err)
684 3efd8e31 2022-10-23 thomas 			return err;
685 3efd8e31 2022-10-23 thomas 	}
686 3efd8e31 2022-10-23 thomas 
687 3efd8e31 2022-10-23 thomas 	if (err == NULL) {
688 3efd8e31 2022-10-23 thomas 		(*tag)->refcnt++;
689 3efd8e31 2022-10-23 thomas 		err = got_repo_cache_tag(repo, id, *tag);
690 3efd8e31 2022-10-23 thomas 		if (err) {
691 3efd8e31 2022-10-23 thomas 			if (err->code == GOT_ERR_OBJ_EXISTS ||
692 3efd8e31 2022-10-23 thomas 			    err->code == GOT_ERR_OBJ_TOO_LARGE)
693 3efd8e31 2022-10-23 thomas 				err = NULL;
694 3efd8e31 2022-10-23 thomas 		}
695 3efd8e31 2022-10-23 thomas 	}
696 3efd8e31 2022-10-23 thomas done:
697 3efd8e31 2022-10-23 thomas 	free(path_packfile);
698 3efd8e31 2022-10-23 thomas 	return err;
699 3efd8e31 2022-10-23 thomas }
700 3efd8e31 2022-10-23 thomas 
701 3efd8e31 2022-10-23 thomas const struct got_error *
702 3efd8e31 2022-10-23 thomas got_object_open_as_tag(struct got_tag_object **tag,
703 3efd8e31 2022-10-23 thomas     struct got_repository *repo, struct got_object_id *id)
704 3efd8e31 2022-10-23 thomas {
705 3efd8e31 2022-10-23 thomas 	*tag = got_repo_get_cached_tag(repo, id);
706 3efd8e31 2022-10-23 thomas 	if (*tag != NULL) {
707 3efd8e31 2022-10-23 thomas 		(*tag)->refcnt++;
708 3efd8e31 2022-10-23 thomas 		return NULL;
709 3efd8e31 2022-10-23 thomas 	}
710 3efd8e31 2022-10-23 thomas 
711 3efd8e31 2022-10-23 thomas 	return open_tag(tag, repo, id, 0);
712 3efd8e31 2022-10-23 thomas }
713 3efd8e31 2022-10-23 thomas 
714 3efd8e31 2022-10-23 thomas const struct got_error *
715 3efd8e31 2022-10-23 thomas got_object_tag_open(struct got_tag_object **tag,
716 3efd8e31 2022-10-23 thomas     struct got_repository *repo, struct got_object *obj)
717 3efd8e31 2022-10-23 thomas {
718 3efd8e31 2022-10-23 thomas 	return open_tag(tag, repo, got_object_get_id(obj), 1);
719 3efd8e31 2022-10-23 thomas }