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Date:: Sun Oct 23 00:37:19 2022 UTC
Message:: introduce gotd(8), a Git repository server reachable via ssh(1) This is an initial barebones implementation which provides the absolute minimum of functionality required to serve got(1) and git(1) clients. Basic fetch/send functionality has been tested and seems to work here, but this server is not yet expected to be stable. More testing is welcome. See the man pages for setup instructions. The current design uses one reader and one writer process per repository, which will have to be extended to N readers and N writers in the future. At startup, each process will chroot(2) into its assigned repository. This works because gotd(8) can only be started as root, and will then fork+exec, chroot, and privdrop. At present the parent process runs with the following pledge(2) promises: "stdio rpath wpath cpath proc getpw sendfd recvfd fattr flock unix unveil" The parent is the only process able to modify the repository in a way that becomes visible to Git clients. The parent uses unveil(2) to restrict its view of the filesystem to /tmp and the repositories listed in the configuration file gotd.conf(5). Per-repository chroot(2) processes use "stdio rpath sendfd recvfd". The writer defers to the parent for modifying references in the repository to point at newly uploaded commits. The reader is fine without such help, because Git repositories can be read without having to create any lock-files. gotd(8) requires a dedicated user ID, which should own repositories on the filesystem, and a separate secondary group, which should not have filesystem-level repository access, and must be allowed access to the gotd(8) socket. To obtain Git repository access, users must be members of this secondary group, and must have their login shell set to gotsh(1). gotsh(1) connects to the gotd(8) socket and speaks Git-protocol towards the client on the other end of the SSH connection. gotsh(1) is not an interactive command shell. At present, authenticated clients are granted read/write access to all repositories and all references (except for the "refs/got/" and the "refs/remotes/" namespaces, which are already being protected from modification). While complicated access control mechanism are not a design goal, making it possible to safely offer anonymous Git repository access over ssh(1) is on the road map.
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  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 13b2bc37 2022-10-23 stsp #include <stdio.h>
 25 13b2bc37 2022-10-23 stsp #include <stdlib.h>
 26 13b2bc37 2022-10-23 stsp #include <string.h>
 27 13b2bc37 2022-10-23 stsp #include <unistd.h>
 28 13b2bc37 2022-10-23 stsp 
 29 13b2bc37 2022-10-23 stsp #include "got_error.h"
 30 13b2bc37 2022-10-23 stsp #include "got_object.h"
 31 13b2bc37 2022-10-23 stsp #include "got_repository.h"
 32 13b2bc37 2022-10-23 stsp #include "got_path.h"
 33 13b2bc37 2022-10-23 stsp 
 34 13b2bc37 2022-10-23 stsp #include "got_lib_delta.h"
 35 13b2bc37 2022-10-23 stsp #include "got_lib_object.h"
 36 13b2bc37 2022-10-23 stsp #include "got_lib_object_cache.h"
 37 13b2bc37 2022-10-23 stsp #include "got_lib_object_parse.h"
 38 13b2bc37 2022-10-23 stsp #include "got_lib_pack.h"
 39 13b2bc37 2022-10-23 stsp #include "got_lib_repository.h"
 40 13b2bc37 2022-10-23 stsp 
 41 13b2bc37 2022-10-23 stsp const struct got_error *
 42 13b2bc37 2022-10-23 stsp got_object_open_packed(struct got_object **obj, struct got_object_id *id,
 43 13b2bc37 2022-10-23 stsp     struct got_repository *repo)
 44 13b2bc37 2022-10-23 stsp {
 45 13b2bc37 2022-10-23 stsp 	const struct got_error *err = NULL;
 46 13b2bc37 2022-10-23 stsp 	struct got_pack *pack = NULL;
 47 13b2bc37 2022-10-23 stsp 	struct got_packidx *packidx = NULL;
 48 13b2bc37 2022-10-23 stsp 	int idx;
 49 13b2bc37 2022-10-23 stsp 	char *path_packfile;
 50 13b2bc37 2022-10-23 stsp 
 51 13b2bc37 2022-10-23 stsp 	err = got_repo_search_packidx(&packidx, &idx, repo, id);
 52 13b2bc37 2022-10-23 stsp 	if (err)
 53 13b2bc37 2022-10-23 stsp 		return err;
 54 13b2bc37 2022-10-23 stsp 
 55 13b2bc37 2022-10-23 stsp 	err = got_packidx_get_packfile_path(&path_packfile,
 56 13b2bc37 2022-10-23 stsp 	    packidx->path_packidx);
 57 13b2bc37 2022-10-23 stsp 	if (err)
 58 13b2bc37 2022-10-23 stsp 		return err;
 59 13b2bc37 2022-10-23 stsp 
 60 13b2bc37 2022-10-23 stsp 	pack = got_repo_get_cached_pack(repo, path_packfile);
 61 13b2bc37 2022-10-23 stsp 	if (pack == NULL) {
 62 13b2bc37 2022-10-23 stsp 		err = got_repo_cache_pack(&pack, repo, path_packfile, packidx);
 63 13b2bc37 2022-10-23 stsp 		if (err)
 64 13b2bc37 2022-10-23 stsp 			goto done;
 65 13b2bc37 2022-10-23 stsp 	}
 66 13b2bc37 2022-10-23 stsp 
 67 13b2bc37 2022-10-23 stsp 	err = got_packfile_open_object(obj, pack, packidx, idx, id);
 68 13b2bc37 2022-10-23 stsp 	if (err)
 69 13b2bc37 2022-10-23 stsp 		return err;
 70 13b2bc37 2022-10-23 stsp 	(*obj)->refcnt++;
 71 13b2bc37 2022-10-23 stsp 
 72 13b2bc37 2022-10-23 stsp 	err = got_repo_cache_object(repo, id, *obj);
 73 13b2bc37 2022-10-23 stsp 	if (err) {
 74 13b2bc37 2022-10-23 stsp 		if (err->code == GOT_ERR_OBJ_EXISTS ||
 75 13b2bc37 2022-10-23 stsp 		    err->code == GOT_ERR_OBJ_TOO_LARGE)
 76 13b2bc37 2022-10-23 stsp 			err = NULL;
 77 13b2bc37 2022-10-23 stsp 	}
 78 13b2bc37 2022-10-23 stsp done:
 79 13b2bc37 2022-10-23 stsp 	free(path_packfile);
 80 13b2bc37 2022-10-23 stsp 	return err;
 81 13b2bc37 2022-10-23 stsp }
 82 13b2bc37 2022-10-23 stsp 
 83 13b2bc37 2022-10-23 stsp const struct got_error *
 84 13b2bc37 2022-10-23 stsp got_object_open_from_packfile(struct got_object **obj, struct got_object_id *id,
 85 13b2bc37 2022-10-23 stsp     struct got_pack *pack, struct got_packidx *packidx, int obj_idx,
 86 13b2bc37 2022-10-23 stsp     struct got_repository *repo)
 87 13b2bc37 2022-10-23 stsp {
 88 13b2bc37 2022-10-23 stsp 	return got_error(GOT_ERR_NOT_IMPL);
 89 13b2bc37 2022-10-23 stsp }
 90 13b2bc37 2022-10-23 stsp 
 91 13b2bc37 2022-10-23 stsp const struct got_error *
 92 13b2bc37 2022-10-23 stsp got_object_read_raw_delta(uint64_t *base_size, uint64_t *result_size,
 93 13b2bc37 2022-10-23 stsp     off_t *delta_size, off_t *delta_compressed_size, off_t *delta_offset,
 94 13b2bc37 2022-10-23 stsp     off_t *delta_out_offset, struct got_object_id **base_id, int delta_cache_fd,
 95 13b2bc37 2022-10-23 stsp     struct got_packidx *packidx, int obj_idx, struct got_object_id *id,
 96 13b2bc37 2022-10-23 stsp     struct got_repository *repo)
 97 13b2bc37 2022-10-23 stsp {
 98 13b2bc37 2022-10-23 stsp 	return got_error(GOT_ERR_NOT_IMPL);
 99 13b2bc37 2022-10-23 stsp }
100 13b2bc37 2022-10-23 stsp 
101 13b2bc37 2022-10-23 stsp const struct got_error *
102 13b2bc37 2022-10-23 stsp got_object_open(struct got_object **obj, struct got_repository *repo,
103 13b2bc37 2022-10-23 stsp     struct got_object_id *id)
104 13b2bc37 2022-10-23 stsp {
105 13b2bc37 2022-10-23 stsp 	const struct got_error *err = NULL;
106 13b2bc37 2022-10-23 stsp 	int fd;
107 13b2bc37 2022-10-23 stsp 
108 13b2bc37 2022-10-23 stsp 	*obj = got_repo_get_cached_object(repo, id);
109 13b2bc37 2022-10-23 stsp 	if (*obj != NULL) {
110 13b2bc37 2022-10-23 stsp 		(*obj)->refcnt++;
111 13b2bc37 2022-10-23 stsp 		return NULL;
112 13b2bc37 2022-10-23 stsp 	}
113 13b2bc37 2022-10-23 stsp 
114 13b2bc37 2022-10-23 stsp 	err = got_object_open_packed(obj, id, repo);
115 13b2bc37 2022-10-23 stsp 	if (err) {
116 13b2bc37 2022-10-23 stsp 		if (err->code != GOT_ERR_NO_OBJ)
117 13b2bc37 2022-10-23 stsp 			return err;
118 13b2bc37 2022-10-23 stsp 	} else
119 13b2bc37 2022-10-23 stsp 		return NULL;
120 13b2bc37 2022-10-23 stsp 
121 13b2bc37 2022-10-23 stsp 	err = got_object_open_loose_fd(&fd, id, repo);
122 13b2bc37 2022-10-23 stsp 	if (err) {
123 13b2bc37 2022-10-23 stsp 		if (err->code == GOT_ERR_ERRNO && errno == ENOENT)
124 13b2bc37 2022-10-23 stsp 			err = got_error_no_obj(id);
125 13b2bc37 2022-10-23 stsp 		return err;
126 13b2bc37 2022-10-23 stsp 	}
127 13b2bc37 2022-10-23 stsp 
128 13b2bc37 2022-10-23 stsp 	err = got_object_read_header(obj, fd);
129 13b2bc37 2022-10-23 stsp 	if (err)
130 13b2bc37 2022-10-23 stsp 		goto done;
131 13b2bc37 2022-10-23 stsp 
132 13b2bc37 2022-10-23 stsp 	memcpy(&(*obj)->id, id, sizeof((*obj)->id));
133 13b2bc37 2022-10-23 stsp 	(*obj)->refcnt++;
134 13b2bc37 2022-10-23 stsp 
135 13b2bc37 2022-10-23 stsp 	err = got_repo_cache_object(repo, id, *obj);
136 13b2bc37 2022-10-23 stsp 	if (err) {
137 13b2bc37 2022-10-23 stsp 		if (err->code == GOT_ERR_OBJ_EXISTS ||
138 13b2bc37 2022-10-23 stsp 		    err->code == GOT_ERR_OBJ_TOO_LARGE)
139 13b2bc37 2022-10-23 stsp 			err = NULL;
140 13b2bc37 2022-10-23 stsp 	}
141 13b2bc37 2022-10-23 stsp done:
142 13b2bc37 2022-10-23 stsp 	if (close(fd) == -1 && err == NULL)
143 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("close");
144 13b2bc37 2022-10-23 stsp 	return err;
145 13b2bc37 2022-10-23 stsp }
146 13b2bc37 2022-10-23 stsp 
147 13b2bc37 2022-10-23 stsp static const struct got_error *
148 13b2bc37 2022-10-23 stsp wrap_fd(FILE **f, int wrapped_fd)
149 13b2bc37 2022-10-23 stsp {
150 13b2bc37 2022-10-23 stsp 	const struct got_error *err = NULL;
151 13b2bc37 2022-10-23 stsp 	int fd;
152 13b2bc37 2022-10-23 stsp 
153 13b2bc37 2022-10-23 stsp 	if (ftruncate(wrapped_fd, 0L) == -1)
154 13b2bc37 2022-10-23 stsp 		return got_error_from_errno("ftruncate");
155 13b2bc37 2022-10-23 stsp 
156 13b2bc37 2022-10-23 stsp 	if (lseek(wrapped_fd, 0L, SEEK_SET) == -1)
157 13b2bc37 2022-10-23 stsp 		return got_error_from_errno("lseek");
158 13b2bc37 2022-10-23 stsp 
159 13b2bc37 2022-10-23 stsp 	fd = dup(wrapped_fd);
160 13b2bc37 2022-10-23 stsp 	if (fd == -1)
161 13b2bc37 2022-10-23 stsp 		return got_error_from_errno("dup");
162 13b2bc37 2022-10-23 stsp 
163 13b2bc37 2022-10-23 stsp 	*f = fdopen(fd, "w+");
164 13b2bc37 2022-10-23 stsp 	if (*f == NULL) {
165 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("fdopen");
166 13b2bc37 2022-10-23 stsp 		close(fd);
167 13b2bc37 2022-10-23 stsp 	}
168 13b2bc37 2022-10-23 stsp 	return err;
169 13b2bc37 2022-10-23 stsp }
170 13b2bc37 2022-10-23 stsp 
171 13b2bc37 2022-10-23 stsp static const struct got_error *
172 13b2bc37 2022-10-23 stsp read_packed_object_raw(uint8_t **outbuf, off_t *size, size_t *hdrlen,
173 13b2bc37 2022-10-23 stsp     int outfd, struct got_pack *pack, struct got_packidx *packidx, int idx,
174 13b2bc37 2022-10-23 stsp     struct got_object_id *id)
175 13b2bc37 2022-10-23 stsp {
176 13b2bc37 2022-10-23 stsp 	const struct got_error *err = NULL;
177 13b2bc37 2022-10-23 stsp 	uint64_t raw_size = 0;
178 13b2bc37 2022-10-23 stsp 	struct got_object *obj;
179 13b2bc37 2022-10-23 stsp 	FILE *outfile = NULL, *basefile = NULL, *accumfile = NULL;
180 13b2bc37 2022-10-23 stsp 
181 13b2bc37 2022-10-23 stsp 	*outbuf = NULL;
182 13b2bc37 2022-10-23 stsp 	*size = 0;
183 13b2bc37 2022-10-23 stsp 	*hdrlen = 0;
184 13b2bc37 2022-10-23 stsp 
185 13b2bc37 2022-10-23 stsp 	err = got_packfile_open_object(&obj, pack, packidx, idx, id);
186 13b2bc37 2022-10-23 stsp 	if (err)
187 13b2bc37 2022-10-23 stsp 		return err;
188 13b2bc37 2022-10-23 stsp 
189 13b2bc37 2022-10-23 stsp 	if (obj->flags & GOT_OBJ_FLAG_DELTIFIED) {
190 13b2bc37 2022-10-23 stsp 		err = got_pack_get_max_delta_object_size(&raw_size, obj, pack);
191 13b2bc37 2022-10-23 stsp 		if (err)
192 13b2bc37 2022-10-23 stsp 			goto done;
193 13b2bc37 2022-10-23 stsp 	} else
194 13b2bc37 2022-10-23 stsp 		raw_size = obj->size;
195 13b2bc37 2022-10-23 stsp 
196 13b2bc37 2022-10-23 stsp 	if (raw_size <= GOT_DELTA_RESULT_SIZE_CACHED_MAX) {
197 13b2bc37 2022-10-23 stsp 		size_t len;
198 13b2bc37 2022-10-23 stsp 		err = got_packfile_extract_object_to_mem(outbuf, &len,
199 13b2bc37 2022-10-23 stsp 		    obj, pack);
200 13b2bc37 2022-10-23 stsp 		if (err)
201 13b2bc37 2022-10-23 stsp 			goto done;
202 13b2bc37 2022-10-23 stsp 		*size = (off_t)len;
203 13b2bc37 2022-10-23 stsp 	} else {
204 13b2bc37 2022-10-23 stsp 		/*
205 13b2bc37 2022-10-23 stsp 		 * XXX This uses 3 file extra descriptors for no good reason.
206 13b2bc37 2022-10-23 stsp 		 * We should have got_packfile_extract_object_to_fd().
207 13b2bc37 2022-10-23 stsp 		 */
208 13b2bc37 2022-10-23 stsp 		err = wrap_fd(&outfile, outfd);
209 13b2bc37 2022-10-23 stsp 		if (err)
210 13b2bc37 2022-10-23 stsp 			goto done;
211 13b2bc37 2022-10-23 stsp 		err = wrap_fd(&basefile, pack->basefd);
212 13b2bc37 2022-10-23 stsp 		if (err)
213 13b2bc37 2022-10-23 stsp 			goto done;
214 13b2bc37 2022-10-23 stsp 		err = wrap_fd(&accumfile, pack->accumfd);
215 13b2bc37 2022-10-23 stsp 		if (err)
216 13b2bc37 2022-10-23 stsp 			goto done;
217 13b2bc37 2022-10-23 stsp 		err = got_packfile_extract_object(pack, obj, outfile, basefile,
218 13b2bc37 2022-10-23 stsp 		    accumfile);
219 13b2bc37 2022-10-23 stsp 		if (err)
220 13b2bc37 2022-10-23 stsp 			goto done;
221 13b2bc37 2022-10-23 stsp 	}
222 13b2bc37 2022-10-23 stsp 
223 13b2bc37 2022-10-23 stsp 	*hdrlen = obj->hdrlen;
224 13b2bc37 2022-10-23 stsp done:
225 13b2bc37 2022-10-23 stsp 	got_object_close(obj);
226 13b2bc37 2022-10-23 stsp 	if (outfile && fclose(outfile) == EOF && err == NULL)
227 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("fclose");
228 13b2bc37 2022-10-23 stsp 	if (basefile && fclose(basefile) == EOF && err == NULL)
229 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("fclose");
230 13b2bc37 2022-10-23 stsp 	if (accumfile && fclose(accumfile) == EOF && err == NULL)
231 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("fclose");
232 13b2bc37 2022-10-23 stsp 	return err;
233 13b2bc37 2022-10-23 stsp 
234 13b2bc37 2022-10-23 stsp }
235 13b2bc37 2022-10-23 stsp 
236 13b2bc37 2022-10-23 stsp static void
237 13b2bc37 2022-10-23 stsp put_raw_object_tempfile(struct got_raw_object *obj)
238 13b2bc37 2022-10-23 stsp {
239 13b2bc37 2022-10-23 stsp 	struct got_repository *repo = obj->close_arg;
240 13b2bc37 2022-10-23 stsp 
241 13b2bc37 2022-10-23 stsp 	if (obj->tempfile_idx != -1)
242 13b2bc37 2022-10-23 stsp 		got_repo_temp_fds_put(obj->tempfile_idx, repo);
243 13b2bc37 2022-10-23 stsp }
244 13b2bc37 2022-10-23 stsp 
245 13b2bc37 2022-10-23 stsp /* *outfd must be initialized to -1 by caller */
246 13b2bc37 2022-10-23 stsp const struct got_error *
247 13b2bc37 2022-10-23 stsp got_object_raw_open(struct got_raw_object **obj, int *outfd,
248 13b2bc37 2022-10-23 stsp     struct got_repository *repo, struct got_object_id *id)
249 13b2bc37 2022-10-23 stsp {
250 13b2bc37 2022-10-23 stsp 	const struct got_error *err = NULL;
251 13b2bc37 2022-10-23 stsp 	struct got_packidx *packidx = NULL;
252 13b2bc37 2022-10-23 stsp 	int idx, tempfile_idx = -1;
253 13b2bc37 2022-10-23 stsp 	uint8_t *outbuf = NULL;
254 13b2bc37 2022-10-23 stsp 	off_t size = 0;
255 13b2bc37 2022-10-23 stsp 	size_t hdrlen = 0;
256 13b2bc37 2022-10-23 stsp 	char *path_packfile = NULL;
257 13b2bc37 2022-10-23 stsp 
258 13b2bc37 2022-10-23 stsp 	*obj = got_repo_get_cached_raw_object(repo, id);
259 13b2bc37 2022-10-23 stsp 	if (*obj != NULL) {
260 13b2bc37 2022-10-23 stsp 		(*obj)->refcnt++;
261 13b2bc37 2022-10-23 stsp 		return NULL;
262 13b2bc37 2022-10-23 stsp 	}
263 13b2bc37 2022-10-23 stsp 
264 13b2bc37 2022-10-23 stsp 	if (*outfd == -1) {
265 13b2bc37 2022-10-23 stsp 		int tempfd;
266 13b2bc37 2022-10-23 stsp 
267 13b2bc37 2022-10-23 stsp 		err = got_repo_temp_fds_get(&tempfd, &tempfile_idx, repo);
268 13b2bc37 2022-10-23 stsp 		if (err)
269 13b2bc37 2022-10-23 stsp 			return err;
270 13b2bc37 2022-10-23 stsp 
271 13b2bc37 2022-10-23 stsp 		/* Duplicate tempfile descriptor to allow use of fdopen(3). */
272 13b2bc37 2022-10-23 stsp 		*outfd = dup(tempfd);
273 13b2bc37 2022-10-23 stsp 		if (*outfd == -1) {
274 13b2bc37 2022-10-23 stsp 			got_repo_temp_fds_put(tempfile_idx, repo);
275 13b2bc37 2022-10-23 stsp 			return got_error_from_errno("dup");
276 13b2bc37 2022-10-23 stsp 		}
277 13b2bc37 2022-10-23 stsp 	}
278 13b2bc37 2022-10-23 stsp 
279 13b2bc37 2022-10-23 stsp 	err = got_repo_search_packidx(&packidx, &idx, repo, id);
280 13b2bc37 2022-10-23 stsp 	if (err == NULL) {
281 13b2bc37 2022-10-23 stsp 		struct got_pack *pack = NULL;
282 13b2bc37 2022-10-23 stsp 
283 13b2bc37 2022-10-23 stsp 		err = got_packidx_get_packfile_path(&path_packfile,
284 13b2bc37 2022-10-23 stsp 		    packidx->path_packidx);
285 13b2bc37 2022-10-23 stsp 		if (err)
286 13b2bc37 2022-10-23 stsp 			goto done;
287 13b2bc37 2022-10-23 stsp 
288 13b2bc37 2022-10-23 stsp 		pack = got_repo_get_cached_pack(repo, path_packfile);
289 13b2bc37 2022-10-23 stsp 		if (pack == NULL) {
290 13b2bc37 2022-10-23 stsp 			err = got_repo_cache_pack(&pack, repo, path_packfile,
291 13b2bc37 2022-10-23 stsp 			    packidx);
292 13b2bc37 2022-10-23 stsp 			if (err)
293 13b2bc37 2022-10-23 stsp 				goto done;
294 13b2bc37 2022-10-23 stsp 		}
295 13b2bc37 2022-10-23 stsp 		err = read_packed_object_raw(&outbuf, &size, &hdrlen,
296 13b2bc37 2022-10-23 stsp 		    *outfd, pack, packidx, idx, id);
297 13b2bc37 2022-10-23 stsp 		if (err)
298 13b2bc37 2022-10-23 stsp 			goto done;
299 13b2bc37 2022-10-23 stsp 	} else if (err->code == GOT_ERR_NO_OBJ) {
300 13b2bc37 2022-10-23 stsp 		int fd;
301 13b2bc37 2022-10-23 stsp 
302 13b2bc37 2022-10-23 stsp 		err = got_object_open_loose_fd(&fd, id, repo);
303 13b2bc37 2022-10-23 stsp 		if (err)
304 13b2bc37 2022-10-23 stsp 			goto done;
305 13b2bc37 2022-10-23 stsp 		err = got_object_read_raw(&outbuf, &size, &hdrlen,
306 13b2bc37 2022-10-23 stsp 		    GOT_DELTA_RESULT_SIZE_CACHED_MAX, *outfd, id, fd);
307 13b2bc37 2022-10-23 stsp 		if (close(fd) == -1 && err == NULL)
308 13b2bc37 2022-10-23 stsp 			err = got_error_from_errno("close");
309 13b2bc37 2022-10-23 stsp 		if (err)
310 13b2bc37 2022-10-23 stsp 			goto done;
311 13b2bc37 2022-10-23 stsp 	}
312 13b2bc37 2022-10-23 stsp 
313 13b2bc37 2022-10-23 stsp 	err = got_object_raw_alloc(obj, outbuf, outfd, hdrlen, size);
314 13b2bc37 2022-10-23 stsp 	if (err)
315 13b2bc37 2022-10-23 stsp 		goto done;
316 13b2bc37 2022-10-23 stsp 
317 13b2bc37 2022-10-23 stsp 	err = got_repo_cache_raw_object(repo, id, *obj);
318 13b2bc37 2022-10-23 stsp 	if (err) {
319 13b2bc37 2022-10-23 stsp 		if (err->code == GOT_ERR_OBJ_EXISTS ||
320 13b2bc37 2022-10-23 stsp 		    err->code == GOT_ERR_OBJ_TOO_LARGE)
321 13b2bc37 2022-10-23 stsp 			err = NULL;
322 13b2bc37 2022-10-23 stsp 	}
323 13b2bc37 2022-10-23 stsp done:
324 13b2bc37 2022-10-23 stsp 	free(path_packfile);
325 13b2bc37 2022-10-23 stsp 	if (err) {
326 13b2bc37 2022-10-23 stsp 		if (*obj) {
327 13b2bc37 2022-10-23 stsp 			got_object_raw_close(*obj);
328 13b2bc37 2022-10-23 stsp 			*obj = NULL;
329 13b2bc37 2022-10-23 stsp 		}
330 13b2bc37 2022-10-23 stsp 		free(outbuf);
331 13b2bc37 2022-10-23 stsp 		if (tempfile_idx != -1)
332 13b2bc37 2022-10-23 stsp 			got_repo_temp_fds_put(tempfile_idx, repo);
333 13b2bc37 2022-10-23 stsp 	} else {
334 13b2bc37 2022-10-23 stsp 		(*obj)->tempfile_idx = tempfile_idx;
335 13b2bc37 2022-10-23 stsp 		(*obj)->close_cb = put_raw_object_tempfile;
336 13b2bc37 2022-10-23 stsp 		(*obj)->close_arg = repo;
337 13b2bc37 2022-10-23 stsp 	}
338 13b2bc37 2022-10-23 stsp 	return err;
339 13b2bc37 2022-10-23 stsp }
340 13b2bc37 2022-10-23 stsp 
341 13b2bc37 2022-10-23 stsp static const struct got_error *
342 13b2bc37 2022-10-23 stsp open_commit(struct got_commit_object **commit,
343 13b2bc37 2022-10-23 stsp     struct got_repository *repo, struct got_object_id *id, int check_cache)
344 13b2bc37 2022-10-23 stsp {
345 13b2bc37 2022-10-23 stsp 	const struct got_error *err = NULL;
346 13b2bc37 2022-10-23 stsp 	struct got_packidx *packidx = NULL;
347 13b2bc37 2022-10-23 stsp 	int idx;
348 13b2bc37 2022-10-23 stsp 	char *path_packfile = NULL;
349 13b2bc37 2022-10-23 stsp 
350 13b2bc37 2022-10-23 stsp 	if (check_cache) {
351 13b2bc37 2022-10-23 stsp 		*commit = got_repo_get_cached_commit(repo, id);
352 13b2bc37 2022-10-23 stsp 		if (*commit != NULL) {
353 13b2bc37 2022-10-23 stsp 			(*commit)->refcnt++;
354 13b2bc37 2022-10-23 stsp 			return NULL;
355 13b2bc37 2022-10-23 stsp 		}
356 13b2bc37 2022-10-23 stsp 	} else
357 13b2bc37 2022-10-23 stsp 		*commit = NULL;
358 13b2bc37 2022-10-23 stsp 
359 13b2bc37 2022-10-23 stsp 	err = got_repo_search_packidx(&packidx, &idx, repo, id);
360 13b2bc37 2022-10-23 stsp 	if (err == NULL) {
361 13b2bc37 2022-10-23 stsp 		struct got_pack *pack = NULL;
362 13b2bc37 2022-10-23 stsp 		struct got_object *obj;
363 13b2bc37 2022-10-23 stsp 		uint8_t *buf;
364 13b2bc37 2022-10-23 stsp 		size_t len;
365 13b2bc37 2022-10-23 stsp 
366 13b2bc37 2022-10-23 stsp 		err = got_packidx_get_packfile_path(&path_packfile,
367 13b2bc37 2022-10-23 stsp 		    packidx->path_packidx);
368 13b2bc37 2022-10-23 stsp 		if (err)
369 13b2bc37 2022-10-23 stsp 			return err;
370 13b2bc37 2022-10-23 stsp 
371 13b2bc37 2022-10-23 stsp 		pack = got_repo_get_cached_pack(repo, path_packfile);
372 13b2bc37 2022-10-23 stsp 		if (pack == NULL) {
373 13b2bc37 2022-10-23 stsp 			err = got_repo_cache_pack(&pack, repo, path_packfile,
374 13b2bc37 2022-10-23 stsp 			    packidx);
375 13b2bc37 2022-10-23 stsp 			if (err)
376 13b2bc37 2022-10-23 stsp 				goto done;
377 13b2bc37 2022-10-23 stsp 		}
378 13b2bc37 2022-10-23 stsp 		err = got_packfile_open_object(&obj, pack, packidx, idx, id);
379 13b2bc37 2022-10-23 stsp 		if (err)
380 13b2bc37 2022-10-23 stsp 			goto done;
381 13b2bc37 2022-10-23 stsp 		err = got_packfile_extract_object_to_mem(&buf, &len,
382 13b2bc37 2022-10-23 stsp 		    obj, pack);
383 13b2bc37 2022-10-23 stsp 		got_object_close(obj);
384 13b2bc37 2022-10-23 stsp 		if (err)
385 13b2bc37 2022-10-23 stsp 			goto done;
386 13b2bc37 2022-10-23 stsp 		err = got_object_parse_commit(commit, buf, len);
387 13b2bc37 2022-10-23 stsp 		free(buf);
388 13b2bc37 2022-10-23 stsp 	} else if (err->code == GOT_ERR_NO_OBJ) {
389 13b2bc37 2022-10-23 stsp 		int fd;
390 13b2bc37 2022-10-23 stsp 
391 13b2bc37 2022-10-23 stsp 		err = got_object_open_loose_fd(&fd, id, repo);
392 13b2bc37 2022-10-23 stsp 		if (err)
393 13b2bc37 2022-10-23 stsp 			return err;
394 13b2bc37 2022-10-23 stsp 		err = got_object_read_commit(commit, fd, id, 0);
395 13b2bc37 2022-10-23 stsp 		if (close(fd) == -1 && err == NULL)
396 13b2bc37 2022-10-23 stsp 			err = got_error_from_errno("close");
397 13b2bc37 2022-10-23 stsp 		if (err)
398 13b2bc37 2022-10-23 stsp 			return err;
399 13b2bc37 2022-10-23 stsp 	}
400 13b2bc37 2022-10-23 stsp 
401 13b2bc37 2022-10-23 stsp 	if (err == NULL) {
402 13b2bc37 2022-10-23 stsp 		(*commit)->refcnt++;
403 13b2bc37 2022-10-23 stsp 		err = got_repo_cache_commit(repo, id, *commit);
404 13b2bc37 2022-10-23 stsp 		if (err) {
405 13b2bc37 2022-10-23 stsp 			if (err->code == GOT_ERR_OBJ_EXISTS ||
406 13b2bc37 2022-10-23 stsp 			    err->code == GOT_ERR_OBJ_TOO_LARGE)
407 13b2bc37 2022-10-23 stsp 				err = NULL;
408 13b2bc37 2022-10-23 stsp 		}
409 13b2bc37 2022-10-23 stsp 	}
410 13b2bc37 2022-10-23 stsp done:
411 13b2bc37 2022-10-23 stsp 	free(path_packfile);
412 13b2bc37 2022-10-23 stsp 	return err;
413 13b2bc37 2022-10-23 stsp }
414 13b2bc37 2022-10-23 stsp 
415 13b2bc37 2022-10-23 stsp const struct got_error *
416 13b2bc37 2022-10-23 stsp got_object_open_as_commit(struct got_commit_object **commit,
417 13b2bc37 2022-10-23 stsp     struct got_repository *repo, struct got_object_id *id)
418 13b2bc37 2022-10-23 stsp {
419 13b2bc37 2022-10-23 stsp 	*commit = got_repo_get_cached_commit(repo, id);
420 13b2bc37 2022-10-23 stsp 	if (*commit != NULL) {
421 13b2bc37 2022-10-23 stsp 		(*commit)->refcnt++;
422 13b2bc37 2022-10-23 stsp 		return NULL;
423 13b2bc37 2022-10-23 stsp 	}
424 13b2bc37 2022-10-23 stsp 
425 13b2bc37 2022-10-23 stsp 	return open_commit(commit, repo, id, 0);
426 13b2bc37 2022-10-23 stsp }
427 13b2bc37 2022-10-23 stsp 
428 13b2bc37 2022-10-23 stsp const struct got_error *
429 13b2bc37 2022-10-23 stsp got_object_commit_open(struct got_commit_object **commit,
430 13b2bc37 2022-10-23 stsp     struct got_repository *repo, struct got_object *obj)
431 13b2bc37 2022-10-23 stsp {
432 13b2bc37 2022-10-23 stsp 	return open_commit(commit, repo, got_object_get_id(obj), 1);
433 13b2bc37 2022-10-23 stsp }
434 13b2bc37 2022-10-23 stsp 
435 13b2bc37 2022-10-23 stsp static const struct got_error *
436 13b2bc37 2022-10-23 stsp open_tree(struct got_tree_object **tree,
437 13b2bc37 2022-10-23 stsp     struct got_repository *repo, struct got_object_id *id, int check_cache)
438 13b2bc37 2022-10-23 stsp {
439 13b2bc37 2022-10-23 stsp 	const struct got_error *err = NULL;
440 13b2bc37 2022-10-23 stsp 	struct got_packidx *packidx = NULL;
441 13b2bc37 2022-10-23 stsp 	int idx;
442 13b2bc37 2022-10-23 stsp 	char *path_packfile = NULL;
443 13b2bc37 2022-10-23 stsp 	struct got_parsed_tree_entry *entries = NULL;
444 13b2bc37 2022-10-23 stsp 	size_t nentries = 0, nentries_alloc = 0, i;
445 13b2bc37 2022-10-23 stsp 	uint8_t *buf = NULL;
446 13b2bc37 2022-10-23 stsp 
447 13b2bc37 2022-10-23 stsp 	if (check_cache) {
448 13b2bc37 2022-10-23 stsp 		*tree = got_repo_get_cached_tree(repo, id);
449 13b2bc37 2022-10-23 stsp 		if (*tree != NULL) {
450 13b2bc37 2022-10-23 stsp 			(*tree)->refcnt++;
451 13b2bc37 2022-10-23 stsp 			return NULL;
452 13b2bc37 2022-10-23 stsp 		}
453 13b2bc37 2022-10-23 stsp 	} else
454 13b2bc37 2022-10-23 stsp 		*tree = NULL;
455 13b2bc37 2022-10-23 stsp 
456 13b2bc37 2022-10-23 stsp 	err = got_repo_search_packidx(&packidx, &idx, repo, id);
457 13b2bc37 2022-10-23 stsp 	if (err == NULL) {
458 13b2bc37 2022-10-23 stsp 		struct got_pack *pack = NULL;
459 13b2bc37 2022-10-23 stsp 		struct got_object *obj;
460 13b2bc37 2022-10-23 stsp 		size_t len;
461 13b2bc37 2022-10-23 stsp 
462 13b2bc37 2022-10-23 stsp 		err = got_packidx_get_packfile_path(&path_packfile,
463 13b2bc37 2022-10-23 stsp 		    packidx->path_packidx);
464 13b2bc37 2022-10-23 stsp 		if (err)
465 13b2bc37 2022-10-23 stsp 			return err;
466 13b2bc37 2022-10-23 stsp 
467 13b2bc37 2022-10-23 stsp 		pack = got_repo_get_cached_pack(repo, path_packfile);
468 13b2bc37 2022-10-23 stsp 		if (pack == NULL) {
469 13b2bc37 2022-10-23 stsp 			err = got_repo_cache_pack(&pack, repo, path_packfile,
470 13b2bc37 2022-10-23 stsp 			    packidx);
471 13b2bc37 2022-10-23 stsp 			if (err)
472 13b2bc37 2022-10-23 stsp 				goto done;
473 13b2bc37 2022-10-23 stsp 		}
474 13b2bc37 2022-10-23 stsp 		err = got_packfile_open_object(&obj, pack, packidx, idx, id);
475 13b2bc37 2022-10-23 stsp 		if (err)
476 13b2bc37 2022-10-23 stsp 			goto done;
477 13b2bc37 2022-10-23 stsp 		err = got_packfile_extract_object_to_mem(&buf, &len,
478 13b2bc37 2022-10-23 stsp 		    obj, pack);
479 13b2bc37 2022-10-23 stsp 		got_object_close(obj);
480 13b2bc37 2022-10-23 stsp 		if (err)
481 13b2bc37 2022-10-23 stsp 			goto done;
482 13b2bc37 2022-10-23 stsp 		err = got_object_parse_tree(&entries, &nentries,
483 13b2bc37 2022-10-23 stsp 		    &nentries_alloc, buf, len);
484 13b2bc37 2022-10-23 stsp 		if (err)
485 13b2bc37 2022-10-23 stsp 			goto done;
486 13b2bc37 2022-10-23 stsp 	} else if (err->code == GOT_ERR_NO_OBJ) {
487 13b2bc37 2022-10-23 stsp 		int fd;
488 13b2bc37 2022-10-23 stsp 
489 13b2bc37 2022-10-23 stsp 		err = got_object_open_loose_fd(&fd, id, repo);
490 13b2bc37 2022-10-23 stsp 		if (err)
491 13b2bc37 2022-10-23 stsp 			return err;
492 13b2bc37 2022-10-23 stsp 		err = got_object_read_tree(&entries, &nentries,
493 13b2bc37 2022-10-23 stsp 		    &nentries_alloc, &buf, fd, id);
494 13b2bc37 2022-10-23 stsp 		if (close(fd) == -1 && err == NULL)
495 13b2bc37 2022-10-23 stsp 			err = got_error_from_errno("close");
496 13b2bc37 2022-10-23 stsp 		if (err)
497 13b2bc37 2022-10-23 stsp 			goto done;
498 13b2bc37 2022-10-23 stsp 	} else
499 13b2bc37 2022-10-23 stsp 		goto done;
500 13b2bc37 2022-10-23 stsp 
501 13b2bc37 2022-10-23 stsp 	*tree = malloc(sizeof(**tree));
502 13b2bc37 2022-10-23 stsp 	if (*tree == NULL) {
503 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("malloc");
504 13b2bc37 2022-10-23 stsp 		goto done;
505 13b2bc37 2022-10-23 stsp 	}
506 13b2bc37 2022-10-23 stsp 	(*tree)->entries = calloc(nentries, sizeof(struct got_tree_entry));
507 13b2bc37 2022-10-23 stsp 	if ((*tree)->entries == NULL) {
508 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("malloc");
509 13b2bc37 2022-10-23 stsp 		goto done;
510 13b2bc37 2022-10-23 stsp 	}
511 13b2bc37 2022-10-23 stsp 	(*tree)->nentries = nentries;
512 13b2bc37 2022-10-23 stsp 	(*tree)->refcnt = 0;
513 13b2bc37 2022-10-23 stsp 
514 13b2bc37 2022-10-23 stsp 	for (i = 0; i < nentries; i++) {
515 13b2bc37 2022-10-23 stsp 		struct got_parsed_tree_entry *pe = &entries[i];
516 13b2bc37 2022-10-23 stsp 		struct got_tree_entry *te = &(*tree)->entries[i];
517 13b2bc37 2022-10-23 stsp 	
518 13b2bc37 2022-10-23 stsp 		if (strlcpy(te->name, pe->name,
519 13b2bc37 2022-10-23 stsp 		    sizeof(te->name)) >= sizeof(te->name)) {
520 13b2bc37 2022-10-23 stsp 			err = got_error(GOT_ERR_NO_SPACE);
521 13b2bc37 2022-10-23 stsp 			goto done;
522 13b2bc37 2022-10-23 stsp 		}
523 13b2bc37 2022-10-23 stsp 		memcpy(te->id.sha1, pe->id, SHA1_DIGEST_LENGTH);
524 13b2bc37 2022-10-23 stsp 		te->mode = pe->mode;
525 13b2bc37 2022-10-23 stsp 		te->idx = i;
526 13b2bc37 2022-10-23 stsp 	}
527 13b2bc37 2022-10-23 stsp done:
528 13b2bc37 2022-10-23 stsp 	free(path_packfile);
529 13b2bc37 2022-10-23 stsp 	free(entries);
530 13b2bc37 2022-10-23 stsp 	free(buf);
531 13b2bc37 2022-10-23 stsp 	if (err == NULL) {
532 13b2bc37 2022-10-23 stsp 		(*tree)->refcnt++;
533 13b2bc37 2022-10-23 stsp 		err = got_repo_cache_tree(repo, id, *tree);
534 13b2bc37 2022-10-23 stsp 		if (err) {
535 13b2bc37 2022-10-23 stsp 			if (err->code == GOT_ERR_OBJ_EXISTS ||
536 13b2bc37 2022-10-23 stsp 			    err->code == GOT_ERR_OBJ_TOO_LARGE)
537 13b2bc37 2022-10-23 stsp 				err = NULL;
538 13b2bc37 2022-10-23 stsp 		}
539 13b2bc37 2022-10-23 stsp 	}
540 13b2bc37 2022-10-23 stsp 	if (err) {
541 13b2bc37 2022-10-23 stsp 		if (*tree)
542 13b2bc37 2022-10-23 stsp 			free((*tree)->entries);
543 13b2bc37 2022-10-23 stsp 		free(*tree);
544 13b2bc37 2022-10-23 stsp 		*tree = NULL;
545 13b2bc37 2022-10-23 stsp 	}
546 13b2bc37 2022-10-23 stsp 	return err;
547 13b2bc37 2022-10-23 stsp }
548 13b2bc37 2022-10-23 stsp 
549 13b2bc37 2022-10-23 stsp const struct got_error *
550 13b2bc37 2022-10-23 stsp got_object_open_as_tree(struct got_tree_object **tree,
551 13b2bc37 2022-10-23 stsp     struct got_repository *repo, struct got_object_id *id)
552 13b2bc37 2022-10-23 stsp {
553 13b2bc37 2022-10-23 stsp 	*tree = got_repo_get_cached_tree(repo, id);
554 13b2bc37 2022-10-23 stsp 	if (*tree != NULL) {
555 13b2bc37 2022-10-23 stsp 		(*tree)->refcnt++;
556 13b2bc37 2022-10-23 stsp 		return NULL;
557 13b2bc37 2022-10-23 stsp 	}
558 13b2bc37 2022-10-23 stsp 
559 13b2bc37 2022-10-23 stsp 	return open_tree(tree, repo, id, 0);
560 13b2bc37 2022-10-23 stsp }
561 13b2bc37 2022-10-23 stsp 
562 13b2bc37 2022-10-23 stsp const struct got_error *
563 13b2bc37 2022-10-23 stsp got_object_tree_open(struct got_tree_object **tree,
564 13b2bc37 2022-10-23 stsp     struct got_repository *repo, struct got_object *obj)
565 13b2bc37 2022-10-23 stsp {
566 13b2bc37 2022-10-23 stsp 	return open_tree(tree, repo, got_object_get_id(obj), 1);
567 13b2bc37 2022-10-23 stsp }
568 13b2bc37 2022-10-23 stsp 
569 13b2bc37 2022-10-23 stsp const struct got_error *
570 13b2bc37 2022-10-23 stsp got_object_open_as_blob(struct got_blob_object **blob,
571 13b2bc37 2022-10-23 stsp     struct got_repository *repo, struct got_object_id *id, size_t blocksize,
572 13b2bc37 2022-10-23 stsp     int outfd)
573 13b2bc37 2022-10-23 stsp {
574 13b2bc37 2022-10-23 stsp 	return got_error(GOT_ERR_NOT_IMPL);
575 13b2bc37 2022-10-23 stsp }
576 13b2bc37 2022-10-23 stsp 
577 13b2bc37 2022-10-23 stsp const struct got_error *
578 13b2bc37 2022-10-23 stsp got_object_blob_open(struct got_blob_object **blob,
579 13b2bc37 2022-10-23 stsp     struct got_repository *repo, struct got_object *obj, size_t blocksize,
580 13b2bc37 2022-10-23 stsp     int outfd)
581 13b2bc37 2022-10-23 stsp {
582 13b2bc37 2022-10-23 stsp 	return got_error(GOT_ERR_NOT_IMPL);
583 13b2bc37 2022-10-23 stsp }
584 13b2bc37 2022-10-23 stsp 
585 13b2bc37 2022-10-23 stsp static const struct got_error *
586 13b2bc37 2022-10-23 stsp open_tag(struct got_tag_object **tag, struct got_repository *repo,
587 13b2bc37 2022-10-23 stsp     struct got_object_id *id, int check_cache)
588 13b2bc37 2022-10-23 stsp {
589 13b2bc37 2022-10-23 stsp 	const struct got_error *err = NULL;
590 13b2bc37 2022-10-23 stsp 	struct got_packidx *packidx = NULL;
591 13b2bc37 2022-10-23 stsp 	int idx;
592 13b2bc37 2022-10-23 stsp 	char *path_packfile = NULL;
593 13b2bc37 2022-10-23 stsp 	struct got_object *obj = NULL;
594 13b2bc37 2022-10-23 stsp 	int obj_type = GOT_OBJ_TYPE_ANY;
595 13b2bc37 2022-10-23 stsp 
596 13b2bc37 2022-10-23 stsp 	if (check_cache) {
597 13b2bc37 2022-10-23 stsp 		*tag = got_repo_get_cached_tag(repo, id);
598 13b2bc37 2022-10-23 stsp 		if (*tag != NULL) {
599 13b2bc37 2022-10-23 stsp 			(*tag)->refcnt++;
600 13b2bc37 2022-10-23 stsp 			return NULL;
601 13b2bc37 2022-10-23 stsp 		}
602 13b2bc37 2022-10-23 stsp 	} else
603 13b2bc37 2022-10-23 stsp 		*tag = NULL;
604 13b2bc37 2022-10-23 stsp 
605 13b2bc37 2022-10-23 stsp 	err = got_repo_search_packidx(&packidx, &idx, repo, id);
606 13b2bc37 2022-10-23 stsp 	if (err == NULL) {
607 13b2bc37 2022-10-23 stsp 		struct got_pack *pack = NULL;
608 13b2bc37 2022-10-23 stsp 		uint8_t *buf = NULL;
609 13b2bc37 2022-10-23 stsp 		size_t len;
610 13b2bc37 2022-10-23 stsp 
611 13b2bc37 2022-10-23 stsp 		err = got_packidx_get_packfile_path(&path_packfile,
612 13b2bc37 2022-10-23 stsp 		    packidx->path_packidx);
613 13b2bc37 2022-10-23 stsp 		if (err)
614 13b2bc37 2022-10-23 stsp 			return err;
615 13b2bc37 2022-10-23 stsp 
616 13b2bc37 2022-10-23 stsp 		pack = got_repo_get_cached_pack(repo, path_packfile);
617 13b2bc37 2022-10-23 stsp 		if (pack == NULL) {
618 13b2bc37 2022-10-23 stsp 			err = got_repo_cache_pack(&pack, repo, path_packfile,
619 13b2bc37 2022-10-23 stsp 			    packidx);
620 13b2bc37 2022-10-23 stsp 			if (err)
621 13b2bc37 2022-10-23 stsp 				goto done;
622 13b2bc37 2022-10-23 stsp 		}
623 13b2bc37 2022-10-23 stsp 
624 13b2bc37 2022-10-23 stsp 		/* Beware of "lightweight" tags: Check object type first. */
625 13b2bc37 2022-10-23 stsp 		err = got_packfile_open_object(&obj, pack, packidx, idx, id);
626 13b2bc37 2022-10-23 stsp 		if (err)
627 13b2bc37 2022-10-23 stsp 			goto done;
628 13b2bc37 2022-10-23 stsp 		obj_type = obj->type;
629 13b2bc37 2022-10-23 stsp 		if (obj_type != GOT_OBJ_TYPE_TAG) {
630 13b2bc37 2022-10-23 stsp 			err = got_error(GOT_ERR_OBJ_TYPE);
631 13b2bc37 2022-10-23 stsp 			got_object_close(obj);
632 13b2bc37 2022-10-23 stsp 			goto done;
633 13b2bc37 2022-10-23 stsp 		}
634 13b2bc37 2022-10-23 stsp 		err = got_packfile_extract_object_to_mem(&buf, &len,
635 13b2bc37 2022-10-23 stsp 		    obj, pack);
636 13b2bc37 2022-10-23 stsp 		got_object_close(obj);
637 13b2bc37 2022-10-23 stsp 		if (err)
638 13b2bc37 2022-10-23 stsp 			goto done;
639 13b2bc37 2022-10-23 stsp 		err = got_object_parse_tag(tag, buf, len);
640 13b2bc37 2022-10-23 stsp 		free(buf);
641 13b2bc37 2022-10-23 stsp 	} else if (err->code == GOT_ERR_NO_OBJ) {
642 13b2bc37 2022-10-23 stsp 		int fd;
643 13b2bc37 2022-10-23 stsp 
644 13b2bc37 2022-10-23 stsp 		err = got_object_open_loose_fd(&fd, id, repo);
645 13b2bc37 2022-10-23 stsp 		if (err)
646 13b2bc37 2022-10-23 stsp 			return err;
647 13b2bc37 2022-10-23 stsp 		err = got_object_read_header(&obj, fd);
648 13b2bc37 2022-10-23 stsp 		if (close(fd) == -1 && err == NULL)
649 13b2bc37 2022-10-23 stsp 			err = got_error_from_errno("close");
650 13b2bc37 2022-10-23 stsp 		if (err)
651 13b2bc37 2022-10-23 stsp 			return err;
652 13b2bc37 2022-10-23 stsp 		obj_type = obj->type;
653 13b2bc37 2022-10-23 stsp 		got_object_close(obj);
654 13b2bc37 2022-10-23 stsp 		if (obj_type != GOT_OBJ_TYPE_TAG)
655 13b2bc37 2022-10-23 stsp 			return got_error(GOT_ERR_OBJ_TYPE);
656 13b2bc37 2022-10-23 stsp 
657 13b2bc37 2022-10-23 stsp 		err = got_object_open_loose_fd(&fd, id, repo);
658 13b2bc37 2022-10-23 stsp 		if (err)
659 13b2bc37 2022-10-23 stsp 			return err;
660 13b2bc37 2022-10-23 stsp 		err = got_object_read_tag(tag, fd, id, 0);
661 13b2bc37 2022-10-23 stsp 		if (close(fd) == -1 && err == NULL)
662 13b2bc37 2022-10-23 stsp 			err = got_error_from_errno("close");
663 13b2bc37 2022-10-23 stsp 		if (err)
664 13b2bc37 2022-10-23 stsp 			return err;
665 13b2bc37 2022-10-23 stsp 	}
666 13b2bc37 2022-10-23 stsp 
667 13b2bc37 2022-10-23 stsp 	if (err == NULL) {
668 13b2bc37 2022-10-23 stsp 		(*tag)->refcnt++;
669 13b2bc37 2022-10-23 stsp 		err = got_repo_cache_tag(repo, id, *tag);
670 13b2bc37 2022-10-23 stsp 		if (err) {
671 13b2bc37 2022-10-23 stsp 			if (err->code == GOT_ERR_OBJ_EXISTS ||
672 13b2bc37 2022-10-23 stsp 			    err->code == GOT_ERR_OBJ_TOO_LARGE)
673 13b2bc37 2022-10-23 stsp 				err = NULL;
674 13b2bc37 2022-10-23 stsp 		}
675 13b2bc37 2022-10-23 stsp 	}
676 13b2bc37 2022-10-23 stsp done:
677 13b2bc37 2022-10-23 stsp 	free(path_packfile);
678 13b2bc37 2022-10-23 stsp 	return err;
679 13b2bc37 2022-10-23 stsp }
680 13b2bc37 2022-10-23 stsp 
681 13b2bc37 2022-10-23 stsp const struct got_error *
682 13b2bc37 2022-10-23 stsp got_object_open_as_tag(struct got_tag_object **tag,
683 13b2bc37 2022-10-23 stsp     struct got_repository *repo, struct got_object_id *id)
684 13b2bc37 2022-10-23 stsp {
685 13b2bc37 2022-10-23 stsp 	*tag = got_repo_get_cached_tag(repo, id);
686 13b2bc37 2022-10-23 stsp 	if (*tag != NULL) {
687 13b2bc37 2022-10-23 stsp 		(*tag)->refcnt++;
688 13b2bc37 2022-10-23 stsp 		return NULL;
689 13b2bc37 2022-10-23 stsp 	}
690 13b2bc37 2022-10-23 stsp 
691 13b2bc37 2022-10-23 stsp 	return open_tag(tag, repo, id, 0);
692 13b2bc37 2022-10-23 stsp }
693 13b2bc37 2022-10-23 stsp 
694 13b2bc37 2022-10-23 stsp const struct got_error *
695 13b2bc37 2022-10-23 stsp got_object_tag_open(struct got_tag_object **tag,
696 13b2bc37 2022-10-23 stsp     struct got_repository *repo, struct got_object *obj)
697 13b2bc37 2022-10-23 stsp {
698 13b2bc37 2022-10-23 stsp 	return open_tag(tag, repo, got_object_get_id(obj), 1);
699 13b2bc37 2022-10-23 stsp }