1 93658fb9 2020-03-18 stsp /*
  2 93658fb9 2020-03-18 stsp  * Copyright (c) 2018, 2019 Ori Bernstein <ori@openbsd.org>
  3 93658fb9 2020-03-18 stsp  *
  4 93658fb9 2020-03-18 stsp  * Permission to use, copy, modify, and distribute this software for any
  5 93658fb9 2020-03-18 stsp  * purpose with or without fee is hereby granted, provided that the above
  6 93658fb9 2020-03-18 stsp  * copyright notice and this permission notice appear in all copies.
  7 93658fb9 2020-03-18 stsp  *
  8 93658fb9 2020-03-18 stsp  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  9 93658fb9 2020-03-18 stsp  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 10 93658fb9 2020-03-18 stsp  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 11 93658fb9 2020-03-18 stsp  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 12 93658fb9 2020-03-18 stsp  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 13 93658fb9 2020-03-18 stsp  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 14 93658fb9 2020-03-18 stsp  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 15 93658fb9 2020-03-18 stsp  */
 16 93658fb9 2020-03-18 stsp 
 17 93658fb9 2020-03-18 stsp #include <sys/types.h>
 18 93658fb9 2020-03-18 stsp #include <sys/stat.h>
 19 93658fb9 2020-03-18 stsp #include <sys/queue.h>
 20 f8b19efd 2021-10-13 stsp #include <sys/tree.h>
 21 93658fb9 2020-03-18 stsp #include <sys/uio.h>
 22 93658fb9 2020-03-18 stsp #include <sys/socket.h>
 23 93658fb9 2020-03-18 stsp #include <sys/wait.h>
 24 93658fb9 2020-03-18 stsp #include <sys/resource.h>
 25 93658fb9 2020-03-18 stsp #include <sys/socket.h>
 26 93658fb9 2020-03-18 stsp 
 27 78fb0967 2020-09-09 naddy #include <endian.h>
 28 93658fb9 2020-03-18 stsp #include <errno.h>
 29 5cc27ede 2020-03-18 stsp #include <err.h>
 30 93658fb9 2020-03-18 stsp #include <fcntl.h>
 31 93658fb9 2020-03-18 stsp #include <stdio.h>
 32 93658fb9 2020-03-18 stsp #include <stdlib.h>
 33 93658fb9 2020-03-18 stsp #include <string.h>
 34 93658fb9 2020-03-18 stsp #include <stdint.h>
 35 93658fb9 2020-03-18 stsp #include <sha1.h>
 36 5822e79e 2023-02-23 op #include <sha2.h>
 37 81a12da5 2020-09-09 naddy #include <unistd.h>
 38 93658fb9 2020-03-18 stsp #include <zlib.h>
 39 93658fb9 2020-03-18 stsp #include <ctype.h>
 40 93658fb9 2020-03-18 stsp #include <limits.h>
 41 93658fb9 2020-03-18 stsp #include <imsg.h>
 42 93658fb9 2020-03-18 stsp #include <time.h>
 43 93658fb9 2020-03-18 stsp #include <uuid.h>
 44 93658fb9 2020-03-18 stsp 
 45 93658fb9 2020-03-18 stsp #include "got_error.h"
 46 93658fb9 2020-03-18 stsp #include "got_reference.h"
 47 93658fb9 2020-03-18 stsp #include "got_repository.h"
 48 93658fb9 2020-03-18 stsp #include "got_path.h"
 49 93658fb9 2020-03-18 stsp #include "got_cancel.h"
 50 93658fb9 2020-03-18 stsp #include "got_worktree.h"
 51 93658fb9 2020-03-18 stsp #include "got_object.h"
 52 fe4e1501 2020-03-18 stsp #include "got_opentemp.h"
 53 82ebf666 2020-03-18 stsp #include "got_fetch.h"
 54 93658fb9 2020-03-18 stsp 
 55 93658fb9 2020-03-18 stsp #include "got_lib_delta.h"
 56 93658fb9 2020-03-18 stsp #include "got_lib_inflate.h"
 57 93658fb9 2020-03-18 stsp #include "got_lib_object.h"
 58 93658fb9 2020-03-18 stsp #include "got_lib_object_parse.h"
 59 93658fb9 2020-03-18 stsp #include "got_lib_object_create.h"
 60 93658fb9 2020-03-18 stsp #include "got_lib_pack.h"
 61 53bf0b54 2023-02-23 op #include "got_lib_hash.h"
 62 93658fb9 2020-03-18 stsp #include "got_lib_privsep.h"
 63 93658fb9 2020-03-18 stsp #include "got_lib_object_cache.h"
 64 93658fb9 2020-03-18 stsp #include "got_lib_repository.h"
 65 d65a88a2 2021-09-05 stsp #include "got_lib_dial.h"
 66 77d7d3bb 2021-09-05 stsp #include "got_lib_pkt.h"
 67 d582f26c 2020-03-18 stsp 
 68 d582f26c 2020-03-18 stsp #ifndef nitems
 69 d582f26c 2020-03-18 stsp #define nitems(_a)	(sizeof((_a)) / sizeof((_a)[0]))
 70 ccf6dd5e 2020-12-19 stsp #endif
 71 ccf6dd5e 2020-12-19 stsp 
 72 ccf6dd5e 2020-12-19 stsp #ifndef ssizeof
 73 ccf6dd5e 2020-12-19 stsp #define ssizeof(_x) ((ssize_t)(sizeof(_x)))
 74 d582f26c 2020-03-18 stsp #endif
 75 93658fb9 2020-03-18 stsp 
 76 68999b92 2020-03-18 stsp #ifndef MIN
 77 68999b92 2020-03-18 stsp #define	MIN(_a,_b) ((_a) < (_b) ? (_a) : (_b))
 78 68999b92 2020-03-18 stsp #endif
 79 68999b92 2020-03-18 stsp 
 80 20eb36d0 2020-03-18 stsp const struct got_error *
 81 9c52365f 2020-03-21 stsp got_fetch_connect(pid_t *fetchpid, int *fetchfd, const char *proto,
 82 9c52365f 2020-03-21 stsp     const char *host, const char *port, const char *server_path, int verbosity)
 83 20eb36d0 2020-03-18 stsp {
 84 20eb36d0 2020-03-18 stsp 	const struct got_error *err = NULL;
 85 20eb36d0 2020-03-18 stsp 
 86 9c52365f 2020-03-21 stsp 	*fetchpid = -1;
 87 20eb36d0 2020-03-18 stsp 	*fetchfd = -1;
 88 20eb36d0 2020-03-18 stsp 
 89 20eb36d0 2020-03-18 stsp 	if (strcmp(proto, "ssh") == 0 || strcmp(proto, "git+ssh") == 0)
 90 d65a88a2 2021-09-05 stsp 		err = got_dial_ssh(fetchpid, fetchfd, host, port,
 91 1eb38992 2023-04-14 stsp 		    server_path, GOT_DIAL_CMD_FETCH, verbosity);
 92 20eb36d0 2020-03-18 stsp 	else if (strcmp(proto, "git") == 0)
 93 d65a88a2 2021-09-05 stsp 		err = got_dial_git(fetchfd, host, port, server_path,
 94 1eb38992 2023-04-14 stsp 		    GOT_DIAL_CMD_FETCH);
 95 20eb36d0 2020-03-18 stsp 	else if (strcmp(proto, "http") == 0 || strcmp(proto, "git+http") == 0)
 96 20eb36d0 2020-03-18 stsp 		err = got_error_path(proto, GOT_ERR_NOT_IMPL);
 97 20eb36d0 2020-03-18 stsp 	else
 98 20eb36d0 2020-03-18 stsp 		err = got_error_path(proto, GOT_ERR_BAD_PROTO);
 99 82ebf666 2020-03-18 stsp 	return err;
100 849f7557 2020-03-18 stsp }
101 849f7557 2020-03-18 stsp 
102 197088a4 2021-12-27 stsp const struct got_error *
103 07e52fce 2020-03-18 stsp got_fetch_pack(struct got_object_id **pack_hash, struct got_pathlist_head *refs,
104 469dd726 2020-03-20 stsp     struct got_pathlist_head *symrefs, const char *remote_name,
105 4ba14133 2020-03-20 stsp     int mirror_references, int fetch_all_branches,
106 0e4002ca 2020-03-21 stsp     struct got_pathlist_head *wanted_branches,
107 0e4002ca 2020-03-21 stsp     struct got_pathlist_head *wanted_refs, int list_refs_only, int verbosity,
108 188f8dcf 2023-02-07 stsp     int fetchfd, struct got_repository *repo, const char *worktree_refname,
109 118a625d 2023-02-18 mark     const char *remote_head, int no_head, got_fetch_progress_cb progress_cb,
110 118a625d 2023-02-18 mark     void *progress_arg)
111 93658fb9 2020-03-18 stsp {
112 16aeacf7 2020-11-26 stsp 	size_t i;
113 20eb36d0 2020-03-18 stsp 	int imsg_fetchfds[2], imsg_idxfds[2];
114 20eb36d0 2020-03-18 stsp 	int packfd = -1, npackfd = -1, idxfd = -1, nidxfd = -1, nfetchfd = -1;
115 16aeacf7 2020-11-26 stsp 	int tmpfds[3];
116 85e8591f 2020-03-18 stsp 	int fetchstatus, idxstatus, done = 0;
117 93658fb9 2020-03-18 stsp 	const struct got_error *err;
118 85e8591f 2020-03-18 stsp 	struct imsgbuf fetchibuf, idxibuf;
119 85e8591f 2020-03-18 stsp 	pid_t fetchpid, idxpid;
120 bb64b798 2020-03-18 stsp 	char *tmppackpath = NULL, *tmpidxpath = NULL;
121 afa77e03 2020-03-18 stsp 	char *packpath = NULL, *idxpath = NULL, *id_str = NULL;
122 41b0de12 2020-03-21 stsp 	const char *repo_path = NULL;
123 33501562 2020-03-18 stsp 	struct got_pathlist_head have_refs;
124 abe0f35f 2020-03-18 stsp 	struct got_pathlist_entry *pe;
125 7848a0e1 2020-03-19 stsp 	struct got_reflist_head my_refs;
126 7848a0e1 2020-03-19 stsp 	struct got_reflist_entry *re;
127 d2cdc636 2020-03-18 stsp 	off_t packfile_size = 0;
128 393fb88d 2020-03-21 stsp 	struct got_packfile_hdr pack_hdr;
129 393fb88d 2020-03-21 stsp 	uint32_t nobj = 0;
130 ee61b6d3 2020-03-18 stsp 	char *path;
131 f1c6967f 2020-03-19 stsp 	char *progress = NULL;
132 92dc95a8 2020-03-24 stsp 
133 92dc95a8 2020-03-24 stsp 	*pack_hash = NULL;
134 41b0de12 2020-03-21 stsp 
135 0e4002ca 2020-03-21 stsp 	/*
136 0e4002ca 2020-03-21 stsp 	 * Prevent fetching of references that won't make any
137 0e4002ca 2020-03-21 stsp 	 * sense outside of the remote repository's context.
138 0e4002ca 2020-03-21 stsp 	 */
139 0e4002ca 2020-03-21 stsp 	TAILQ_FOREACH(pe, wanted_refs, entry) {
140 0e4002ca 2020-03-21 stsp 		const char *refname = pe->path;
141 0e4002ca 2020-03-21 stsp 		if (strncmp(refname, "refs/got/", 9) == 0 ||
142 0e4002ca 2020-03-21 stsp 		    strncmp(refname, "got/", 4) == 0 ||
143 0e4002ca 2020-03-21 stsp 		    strncmp(refname, "refs/remotes/", 13) == 0 ||
144 0e4002ca 2020-03-21 stsp 		    strncmp(refname, "remotes/", 8) == 0)
145 0e4002ca 2020-03-21 stsp 			return got_error_path(refname, GOT_ERR_FETCH_BAD_REF);
146 0e4002ca 2020-03-21 stsp 	}
147 0e4002ca 2020-03-21 stsp 
148 41b0de12 2020-03-21 stsp 	if (!list_refs_only)
149 41b0de12 2020-03-21 stsp 		repo_path = got_repo_get_path_git_dir(repo);
150 abe0f35f 2020-03-18 stsp 
151 d582f26c 2020-03-18 stsp 	for (i = 0; i < nitems(tmpfds); i++)
152 d582f26c 2020-03-18 stsp 		tmpfds[i] = -1;
153 93658fb9 2020-03-18 stsp 
154 33501562 2020-03-18 stsp 	TAILQ_INIT(&have_refs);
155 d9dff0e5 2020-12-26 stsp 	TAILQ_INIT(&my_refs);
156 7848a0e1 2020-03-19 stsp 
157 41b0de12 2020-03-21 stsp 	if (!list_refs_only) {
158 41b0de12 2020-03-21 stsp 		err = got_ref_list(&my_refs, repo, NULL,
159 41b0de12 2020-03-21 stsp 		    got_ref_cmp_by_name, NULL);
160 41b0de12 2020-03-21 stsp 		if (err)
161 41b0de12 2020-03-21 stsp 			goto done;
162 41b0de12 2020-03-21 stsp 	}
163 7848a0e1 2020-03-19 stsp 
164 d9dff0e5 2020-12-26 stsp 	TAILQ_FOREACH(re, &my_refs, entry) {
165 7848a0e1 2020-03-19 stsp 		struct got_object_id *id;
166 7848a0e1 2020-03-19 stsp 		const char *refname;
167 7848a0e1 2020-03-19 stsp 
168 7848a0e1 2020-03-19 stsp 		if (got_ref_is_symbolic(re->ref))
169 7848a0e1 2020-03-19 stsp 			continue;
170 33501562 2020-03-18 stsp 
171 965803d3 2021-09-28 stsp 		err = got_ref_resolve(&id, repo, re->ref);
172 965803d3 2021-09-28 stsp 		if (err)
173 965803d3 2021-09-28 stsp 			goto done;
174 965803d3 2021-09-28 stsp 		refname = strdup(got_ref_get_name(re->ref));
175 965803d3 2021-09-28 stsp 		if (refname == NULL) {
176 965803d3 2021-09-28 stsp 			err = got_error_from_errno("strdup");
177 965803d3 2021-09-28 stsp 			goto done;
178 469dd726 2020-03-20 stsp 		}
179 965803d3 2021-09-28 stsp 		err = got_pathlist_append(&have_refs, refname, id);
180 965803d3 2021-09-28 stsp 		if (err)
181 965803d3 2021-09-28 stsp 			goto done;
182 7848a0e1 2020-03-19 stsp 	}
183 7848a0e1 2020-03-19 stsp 
184 41b0de12 2020-03-21 stsp 	if (list_refs_only) {
185 41b0de12 2020-03-21 stsp 		packfd = got_opentempfd();
186 41b0de12 2020-03-21 stsp 		if (packfd == -1) {
187 41b0de12 2020-03-21 stsp 			err = got_error_from_errno("got_opentempfd");
188 41b0de12 2020-03-21 stsp 			goto done;
189 41b0de12 2020-03-21 stsp 		}
190 41b0de12 2020-03-21 stsp 	} else {
191 41b0de12 2020-03-21 stsp 		if (asprintf(&path, "%s/%s/fetching.pack",
192 41b0de12 2020-03-21 stsp 		    repo_path, GOT_OBJECTS_PACK_DIR) == -1) {
193 41b0de12 2020-03-21 stsp 			err = got_error_from_errno("asprintf");
194 41b0de12 2020-03-21 stsp 			goto done;
195 41b0de12 2020-03-21 stsp 		}
196 b90054ed 2022-11-01 stsp 		err = got_opentemp_named_fd(&tmppackpath, &packfd, path, "");
197 41b0de12 2020-03-21 stsp 		free(path);
198 41b0de12 2020-03-21 stsp 		if (err)
199 0843a4ce 2020-10-31 semarie 			goto done;
200 0843a4ce 2020-10-31 semarie 		if (fchmod(packfd, GOT_DEFAULT_FILE_MODE) != 0) {
201 0843a4ce 2020-10-31 semarie 			err = got_error_from_errno2("fchmod", tmppackpath);
202 41b0de12 2020-03-21 stsp 			goto done;
203 0843a4ce 2020-10-31 semarie 		}
204 8e278d17 2020-03-18 stsp 	}
205 41b0de12 2020-03-21 stsp 	if (list_refs_only) {
206 41b0de12 2020-03-21 stsp 		idxfd = got_opentempfd();
207 41b0de12 2020-03-21 stsp 		if (idxfd == -1) {
208 41b0de12 2020-03-21 stsp 			err = got_error_from_errno("got_opentempfd");
209 41b0de12 2020-03-21 stsp 			goto done;
210 41b0de12 2020-03-21 stsp 		}
211 41b0de12 2020-03-21 stsp 	} else {
212 41b0de12 2020-03-21 stsp 		if (asprintf(&path, "%s/%s/fetching.idx",
213 41b0de12 2020-03-21 stsp 		    repo_path, GOT_OBJECTS_PACK_DIR) == -1) {
214 41b0de12 2020-03-21 stsp 			err = got_error_from_errno("asprintf");
215 41b0de12 2020-03-21 stsp 			goto done;
216 41b0de12 2020-03-21 stsp 		}
217 b90054ed 2022-11-01 stsp 		err = got_opentemp_named_fd(&tmpidxpath, &idxfd, path, "");
218 41b0de12 2020-03-21 stsp 		free(path);
219 41b0de12 2020-03-21 stsp 		if (err)
220 0843a4ce 2020-10-31 semarie 			goto done;
221 0843a4ce 2020-10-31 semarie 		if (fchmod(idxfd, GOT_DEFAULT_FILE_MODE) != 0) {
222 0843a4ce 2020-10-31 semarie 			err = got_error_from_errno2("fchmod", tmpidxpath);
223 41b0de12 2020-03-21 stsp 			goto done;
224 0843a4ce 2020-10-31 semarie 		}
225 ee61b6d3 2020-03-18 stsp 	}
226 93658fb9 2020-03-18 stsp 	nidxfd = dup(idxfd);
227 8e278d17 2020-03-18 stsp 	if (nidxfd == -1) {
228 8e278d17 2020-03-18 stsp 		err = got_error_from_errno("dup");
229 8e278d17 2020-03-18 stsp 		goto done;
230 8e278d17 2020-03-18 stsp 	}
231 93658fb9 2020-03-18 stsp 
232 d582f26c 2020-03-18 stsp 	for (i = 0; i < nitems(tmpfds); i++) {
233 d582f26c 2020-03-18 stsp 		tmpfds[i] = got_opentempfd();
234 d582f26c 2020-03-18 stsp 		if (tmpfds[i] == -1) {
235 d582f26c 2020-03-18 stsp 			err = got_error_from_errno("got_opentempfd");
236 d582f26c 2020-03-18 stsp 			goto done;
237 d582f26c 2020-03-18 stsp 		}
238 4788f1ce 2020-03-18 stsp 	}
239 4788f1ce 2020-03-18 stsp 
240 8e278d17 2020-03-18 stsp 	if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, imsg_fetchfds) == -1) {
241 8e278d17 2020-03-18 stsp 		err = got_error_from_errno("socketpair");
242 8e278d17 2020-03-18 stsp 		goto done;
243 8e278d17 2020-03-18 stsp 	}
244 93658fb9 2020-03-18 stsp 
245 85e8591f 2020-03-18 stsp 	fetchpid = fork();
246 85e8591f 2020-03-18 stsp 	if (fetchpid == -1) {
247 8e278d17 2020-03-18 stsp 		err = got_error_from_errno("fork");
248 8e278d17 2020-03-18 stsp 		goto done;
249 85e8591f 2020-03-18 stsp 	} else if (fetchpid == 0){
250 8e278d17 2020-03-18 stsp 		got_privsep_exec_child(imsg_fetchfds,
251 12491971 2020-03-18 stsp 		    GOT_PATH_PROG_FETCH_PACK, tmppackpath);
252 93658fb9 2020-03-18 stsp 	}
253 93658fb9 2020-03-18 stsp 
254 08578a35 2021-01-22 stsp 	if (close(imsg_fetchfds[1]) == -1) {
255 8e278d17 2020-03-18 stsp 		err = got_error_from_errno("close");
256 8e278d17 2020-03-18 stsp 		goto done;
257 8e278d17 2020-03-18 stsp 	}
258 85e8591f 2020-03-18 stsp 	imsg_init(&fetchibuf, imsg_fetchfds[0]);
259 20eb36d0 2020-03-18 stsp 	nfetchfd = dup(fetchfd);
260 20eb36d0 2020-03-18 stsp 	if (nfetchfd == -1) {
261 20eb36d0 2020-03-18 stsp 		err = got_error_from_errno("dup");
262 20eb36d0 2020-03-18 stsp 		goto done;
263 20eb36d0 2020-03-18 stsp 	}
264 659e7fbd 2020-03-20 stsp 	err = got_privsep_send_fetch_req(&fetchibuf, nfetchfd, &have_refs,
265 0e4002ca 2020-03-21 stsp 	    fetch_all_branches, wanted_branches, wanted_refs,
266 118a625d 2023-02-18 mark 	    list_refs_only, worktree_refname, remote_head, no_head, verbosity);
267 93658fb9 2020-03-18 stsp 	if (err != NULL)
268 8e278d17 2020-03-18 stsp 		goto done;
269 20eb36d0 2020-03-18 stsp 	nfetchfd = -1;
270 93658fb9 2020-03-18 stsp 	npackfd = dup(packfd);
271 8e278d17 2020-03-18 stsp 	if (npackfd == -1) {
272 8e278d17 2020-03-18 stsp 		err = got_error_from_errno("dup");
273 8e278d17 2020-03-18 stsp 		goto done;
274 8e278d17 2020-03-18 stsp 	}
275 393fb88d 2020-03-21 stsp 	err = got_privsep_send_fetch_outfd(&fetchibuf, npackfd);
276 393fb88d 2020-03-21 stsp 	if (err != NULL)
277 393fb88d 2020-03-21 stsp 		goto done;
278 393fb88d 2020-03-21 stsp 	npackfd = -1;
279 8e278d17 2020-03-18 stsp 
280 d2cdc636 2020-03-18 stsp 	packfile_size = 0;
281 77d7d3bb 2021-09-05 stsp 	progress = calloc(GOT_PKT_MAX, 1);
282 f1c6967f 2020-03-19 stsp 	if (progress == NULL) {
283 f1c6967f 2020-03-19 stsp 		err = got_error_from_errno("calloc");
284 f1c6967f 2020-03-19 stsp 		goto done;
285 f1c6967f 2020-03-19 stsp 	}
286 1d72a2a0 2020-03-24 stsp 
287 1d72a2a0 2020-03-24 stsp 	*pack_hash = calloc(1, sizeof(**pack_hash));
288 1d72a2a0 2020-03-24 stsp 	if (*pack_hash == NULL) {
289 1d72a2a0 2020-03-24 stsp 		err = got_error_from_errno("calloc");
290 1d72a2a0 2020-03-24 stsp 		goto done;
291 1d72a2a0 2020-03-24 stsp 	}
292 1d72a2a0 2020-03-24 stsp 
293 8f2d01a6 2020-03-18 stsp 	while (!done) {
294 d9b4d0c0 2020-03-18 stsp 		struct got_object_id *id = NULL;
295 d9b4d0c0 2020-03-18 stsp 		char *refname = NULL;
296 531c3985 2020-03-18 stsp 		char *server_progress = NULL;
297 7848a0e1 2020-03-19 stsp 		off_t packfile_size_cur = 0;
298 8e278d17 2020-03-18 stsp 
299 8f2d01a6 2020-03-18 stsp 		err = got_privsep_recv_fetch_progress(&done,
300 d2cdc636 2020-03-18 stsp 		    &id, &refname, symrefs, &server_progress,
301 1d72a2a0 2020-03-24 stsp 		    &packfile_size_cur, (*pack_hash)->sha1, &fetchibuf);
302 8f2d01a6 2020-03-18 stsp 		if (err != NULL)
303 8e278d17 2020-03-18 stsp 			goto done;
304 dd088d95 2021-10-06 stsp 		/* Don't report size progress for an empty pack file. */
305 dd088d95 2021-10-06 stsp 		if (packfile_size_cur <= ssizeof(pack_hdr) + SHA1_DIGEST_LENGTH)
306 dd088d95 2021-10-06 stsp 			packfile_size_cur = 0;
307 1d72a2a0 2020-03-24 stsp 		if (!done && refname && id) {
308 41b0de12 2020-03-21 stsp 			err = got_pathlist_insert(NULL, refs, refname, id);
309 8f2d01a6 2020-03-18 stsp 			if (err)
310 8e278d17 2020-03-18 stsp 				goto done;
311 1d72a2a0 2020-03-24 stsp 		} else if (!done && server_progress) {
312 f1c6967f 2020-03-19 stsp 			char *p;
313 f1c6967f 2020-03-19 stsp 			/*
314 f1c6967f 2020-03-19 stsp 			 * XXX git-daemon tends to send batched output with
315 f1c6967f 2020-03-19 stsp 			 * lines spanning separate packets. Buffer progress
316 f1c6967f 2020-03-19 stsp 			 * output until we see a CR or LF to avoid giving
317 f1c6967f 2020-03-19 stsp 			 * partial lines of progress output to the callback.
318 f1c6967f 2020-03-19 stsp 			 */
319 f1c6967f 2020-03-19 stsp 			if (strlcat(progress, server_progress,
320 77d7d3bb 2021-09-05 stsp 			    GOT_PKT_MAX) >= GOT_PKT_MAX) {
321 f1c6967f 2020-03-19 stsp 				progress[0] = '\0'; /* discard */
322 f1c6967f 2020-03-19 stsp 				continue;
323 f1c6967f 2020-03-19 stsp 			}
324 f1c6967f 2020-03-19 stsp 			while ((p = strchr(progress, '\r')) != NULL ||
325 f1c6967f 2020-03-19 stsp 			    (p = strchr(progress, '\n')) != NULL) {
326 f1c6967f 2020-03-19 stsp 				char *s;
327 f1c6967f 2020-03-19 stsp 				size_t n;
328 f1c6967f 2020-03-19 stsp 				char c = *p;
329 f1c6967f 2020-03-19 stsp 				*p = '\0';
330 f1c6967f 2020-03-19 stsp 				if (asprintf(&s, "%s%s", progress,
331 f1c6967f 2020-03-19 stsp 				    c == '\n' ? "\n" : "") == -1) {
332 f1c6967f 2020-03-19 stsp 					err = got_error_from_errno("asprintf");
333 f1c6967f 2020-03-19 stsp 					goto done;
334 f1c6967f 2020-03-19 stsp 				}
335 668a20f6 2020-03-18 stsp 				err = progress_cb(progress_arg, s,
336 668a20f6 2020-03-18 stsp 				    packfile_size_cur, 0, 0, 0, 0);
337 f1c6967f 2020-03-19 stsp 				free(s);
338 531c3985 2020-03-18 stsp 				if (err)
339 531c3985 2020-03-18 stsp 					break;
340 f1c6967f 2020-03-19 stsp 				n = strlen(progress);
341 77d7d3bb 2021-09-05 stsp 				if (n < GOT_PKT_MAX - 1) {
342 f1c6967f 2020-03-19 stsp 					memmove(progress, &progress[n + 1],
343 77d7d3bb 2021-09-05 stsp 					    GOT_PKT_MAX - n - 1);
344 f1c6967f 2020-03-19 stsp 				} else
345 f1c6967f 2020-03-19 stsp 					progress[0] = '\0';
346 531c3985 2020-03-18 stsp 			}
347 531c3985 2020-03-18 stsp 			free(server_progress);
348 531c3985 2020-03-18 stsp 			if (err)
349 531c3985 2020-03-18 stsp 				goto done;
350 1d72a2a0 2020-03-24 stsp 		} else if (!done && packfile_size_cur != packfile_size) {
351 d2cdc636 2020-03-18 stsp 			err = progress_cb(progress_arg, NULL,
352 668a20f6 2020-03-18 stsp 			    packfile_size_cur, 0, 0, 0, 0);
353 d2cdc636 2020-03-18 stsp 			if (err)
354 d2cdc636 2020-03-18 stsp 				break;
355 d2cdc636 2020-03-18 stsp 			packfile_size = packfile_size_cur;
356 8f2d01a6 2020-03-18 stsp 		}
357 688fe08b 2022-02-14 op 	}
358 688fe08b 2022-02-14 op 	if (close(imsg_fetchfds[0]) == -1) {
359 688fe08b 2022-02-14 op 		err = got_error_from_errno("close");
360 688fe08b 2022-02-14 op 		goto done;
361 8f2d01a6 2020-03-18 stsp 	}
362 85e8591f 2020-03-18 stsp 	if (waitpid(fetchpid, &fetchstatus, 0) == -1) {
363 8e278d17 2020-03-18 stsp 		err = got_error_from_errno("waitpid");
364 393fb88d 2020-03-21 stsp 		goto done;
365 393fb88d 2020-03-21 stsp 	}
366 393fb88d 2020-03-21 stsp 
367 393fb88d 2020-03-21 stsp 	if (lseek(packfd, 0, SEEK_SET) == -1) {
368 393fb88d 2020-03-21 stsp 		err = got_error_from_errno("lseek");
369 8e278d17 2020-03-18 stsp 		goto done;
370 8e278d17 2020-03-18 stsp 	}
371 849f7557 2020-03-18 stsp 
372 7848a0e1 2020-03-19 stsp 	/* If zero data was fetched without error we are already up-to-date. */
373 1d72a2a0 2020-03-24 stsp 	if (packfile_size == 0) {
374 1d72a2a0 2020-03-24 stsp 		free(*pack_hash);
375 1d72a2a0 2020-03-24 stsp 		*pack_hash = NULL;
376 393fb88d 2020-03-21 stsp 		goto done;
377 ccf6dd5e 2020-12-19 stsp 	} else if (packfile_size < ssizeof(pack_hdr) + SHA1_DIGEST_LENGTH) {
378 393fb88d 2020-03-21 stsp 		err = got_error_msg(GOT_ERR_BAD_PACKFILE, "short pack file");
379 393fb88d 2020-03-21 stsp 		goto done;
380 393fb88d 2020-03-21 stsp 	} else {
381 393fb88d 2020-03-21 stsp 		ssize_t n;
382 393fb88d 2020-03-21 stsp 
383 ccf6dd5e 2020-12-19 stsp 		n = read(packfd, &pack_hdr, ssizeof(pack_hdr));
384 393fb88d 2020-03-21 stsp 		if (n == -1) {
385 393fb88d 2020-03-21 stsp 			err = got_error_from_errno("read");
386 393fb88d 2020-03-21 stsp 			goto done;
387 393fb88d 2020-03-21 stsp 		}
388 ccf6dd5e 2020-12-19 stsp 		if (n != ssizeof(pack_hdr)) {
389 393fb88d 2020-03-21 stsp 			err = got_error(GOT_ERR_IO);
390 393fb88d 2020-03-21 stsp 			goto done;
391 393fb88d 2020-03-21 stsp 		}
392 393fb88d 2020-03-21 stsp 		if (pack_hdr.signature != htobe32(GOT_PACKFILE_SIGNATURE)) {
393 393fb88d 2020-03-21 stsp 			err = got_error_msg(GOT_ERR_BAD_PACKFILE,
394 393fb88d 2020-03-21 stsp 			    "bad pack file signature");
395 393fb88d 2020-03-21 stsp 			goto done;
396 393fb88d 2020-03-21 stsp 		}
397 393fb88d 2020-03-21 stsp 		if (pack_hdr.version != htobe32(GOT_PACKFILE_VERSION)) {
398 393fb88d 2020-03-21 stsp 			err = got_error_msg(GOT_ERR_BAD_PACKFILE,
399 393fb88d 2020-03-21 stsp 			    "bad pack file version");
400 393fb88d 2020-03-21 stsp 			goto done;
401 393fb88d 2020-03-21 stsp 		}
402 78fb0967 2020-09-09 naddy 		nobj = be32toh(pack_hdr.nobjects);
403 393fb88d 2020-03-21 stsp 		if (nobj == 0 &&
404 ccf6dd5e 2020-12-19 stsp 		    packfile_size > ssizeof(pack_hdr) + SHA1_DIGEST_LENGTH)
405 393fb88d 2020-03-21 stsp 			return got_error_msg(GOT_ERR_BAD_PACKFILE,
406 393fb88d 2020-03-21 stsp 			    "bad pack file with zero objects");
407 393fb88d 2020-03-21 stsp 		if (nobj != 0 &&
408 ccf6dd5e 2020-12-19 stsp 		    packfile_size <= ssizeof(pack_hdr) + SHA1_DIGEST_LENGTH)
409 393fb88d 2020-03-21 stsp 			return got_error_msg(GOT_ERR_BAD_PACKFILE,
410 393fb88d 2020-03-21 stsp 			    "empty pack file with non-zero object count");
411 393fb88d 2020-03-21 stsp 	}
412 393fb88d 2020-03-21 stsp 
413 393fb88d 2020-03-21 stsp 	/*
414 393fb88d 2020-03-21 stsp 	 * If the pack file contains no objects, we may only need to update
415 393fb88d 2020-03-21 stsp 	 * references in our repository. The caller will take care of that.
416 393fb88d 2020-03-21 stsp 	 */
417 dd088d95 2021-10-06 stsp 	if (nobj == 0) {
418 dd088d95 2021-10-06 stsp 		free(*pack_hash);
419 dd088d95 2021-10-06 stsp 		*pack_hash = NULL;
420 849f7557 2020-03-18 stsp 		goto done;
421 dd088d95 2021-10-06 stsp 	}
422 393fb88d 2020-03-21 stsp 
423 393fb88d 2020-03-21 stsp 	if (lseek(packfd, 0, SEEK_SET) == -1) {
424 393fb88d 2020-03-21 stsp 		err = got_error_from_errno("lseek");
425 393fb88d 2020-03-21 stsp 		goto done;
426 393fb88d 2020-03-21 stsp 	}
427 5e91dae4 2022-08-30 stsp 
428 8e278d17 2020-03-18 stsp 	if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, imsg_idxfds) == -1) {
429 8e278d17 2020-03-18 stsp 		err = got_error_from_errno("socketpair");
430 8e278d17 2020-03-18 stsp 		goto done;
431 8e278d17 2020-03-18 stsp 	}
432 85e8591f 2020-03-18 stsp 	idxpid = fork();
433 85e8591f 2020-03-18 stsp 	if (idxpid == -1) {
434 8e278d17 2020-03-18 stsp 		err= got_error_from_errno("fork");
435 8e278d17 2020-03-18 stsp 		goto done;
436 85e8591f 2020-03-18 stsp 	} else if (idxpid == 0)
437 8e278d17 2020-03-18 stsp 		got_privsep_exec_child(imsg_idxfds,
438 12491971 2020-03-18 stsp 		    GOT_PATH_PROG_INDEX_PACK, tmppackpath);
439 08578a35 2021-01-22 stsp 	if (close(imsg_idxfds[1]) == -1) {
440 8e278d17 2020-03-18 stsp 		err = got_error_from_errno("close");
441 8e278d17 2020-03-18 stsp 		goto done;
442 8e278d17 2020-03-18 stsp 	}
443 85e8591f 2020-03-18 stsp 	imsg_init(&idxibuf, imsg_idxfds[0]);
444 93658fb9 2020-03-18 stsp 
445 393fb88d 2020-03-21 stsp 	npackfd = dup(packfd);
446 393fb88d 2020-03-21 stsp 	if (npackfd == -1) {
447 393fb88d 2020-03-21 stsp 		err = got_error_from_errno("dup");
448 393fb88d 2020-03-21 stsp 		goto done;
449 393fb88d 2020-03-21 stsp 	}
450 668a20f6 2020-03-18 stsp 	err = got_privsep_send_index_pack_req(&idxibuf, (*pack_hash)->sha1,
451 668a20f6 2020-03-18 stsp 	    npackfd);
452 93658fb9 2020-03-18 stsp 	if (err != NULL)
453 8e278d17 2020-03-18 stsp 		goto done;
454 8e278d17 2020-03-18 stsp 	npackfd = -1;
455 73ab1060 2020-03-18 stsp 	err = got_privsep_send_index_pack_outfd(&idxibuf, nidxfd);
456 93658fb9 2020-03-18 stsp 	if (err != NULL)
457 8e278d17 2020-03-18 stsp 		goto done;
458 8e278d17 2020-03-18 stsp 	nidxfd = -1;
459 d582f26c 2020-03-18 stsp 	for (i = 0; i < nitems(tmpfds); i++) {
460 d582f26c 2020-03-18 stsp 		err = got_privsep_send_tmpfd(&idxibuf, tmpfds[i]);
461 d582f26c 2020-03-18 stsp 		if (err != NULL)
462 d582f26c 2020-03-18 stsp 			goto done;
463 d582f26c 2020-03-18 stsp 		tmpfds[i] = -1;
464 d582f26c 2020-03-18 stsp 	}
465 baa9fea0 2020-03-18 stsp 	done = 0;
466 baa9fea0 2020-03-18 stsp 	while (!done) {
467 668a20f6 2020-03-18 stsp 		int nobj_total, nobj_indexed, nobj_loose, nobj_resolved;
468 668a20f6 2020-03-18 stsp 
469 668a20f6 2020-03-18 stsp 		err = got_privsep_recv_index_progress(&done, &nobj_total,
470 668a20f6 2020-03-18 stsp 		    &nobj_indexed, &nobj_loose, &nobj_resolved,
471 668a20f6 2020-03-18 stsp 		    &idxibuf);
472 baa9fea0 2020-03-18 stsp 		if (err != NULL)
473 baa9fea0 2020-03-18 stsp 			goto done;
474 668a20f6 2020-03-18 stsp 		if (nobj_indexed != 0) {
475 baa9fea0 2020-03-18 stsp 			err = progress_cb(progress_arg, NULL,
476 668a20f6 2020-03-18 stsp 			    packfile_size, nobj_total,
477 668a20f6 2020-03-18 stsp 			    nobj_indexed, nobj_loose, nobj_resolved);
478 baa9fea0 2020-03-18 stsp 			if (err)
479 baa9fea0 2020-03-18 stsp 				break;
480 baa9fea0 2020-03-18 stsp 		}
481 baa9fea0 2020-03-18 stsp 	}
482 8e278d17 2020-03-18 stsp 	if (close(imsg_idxfds[0]) == -1) {
483 8e278d17 2020-03-18 stsp 		err = got_error_from_errno("close");
484 8e278d17 2020-03-18 stsp 		goto done;
485 8e278d17 2020-03-18 stsp 	}
486 85e8591f 2020-03-18 stsp 	if (waitpid(idxpid, &idxstatus, 0) == -1) {
487 8e278d17 2020-03-18 stsp 		err = got_error_from_errno("waitpid");
488 8e278d17 2020-03-18 stsp 		goto done;
489 8e278d17 2020-03-18 stsp 	}
490 93658fb9 2020-03-18 stsp 
491 d9b4d0c0 2020-03-18 stsp 	err = got_object_id_str(&id_str, *pack_hash);
492 afa77e03 2020-03-18 stsp 	if (err)
493 8e278d17 2020-03-18 stsp 		goto done;
494 66cba96f 2020-03-18 stsp 	if (asprintf(&packpath, "%s/%s/pack-%s.pack",
495 66cba96f 2020-03-18 stsp 	    repo_path, GOT_OBJECTS_PACK_DIR, id_str) == -1) {
496 8e278d17 2020-03-18 stsp 		err = got_error_from_errno("asprintf");
497 8e278d17 2020-03-18 stsp 		goto done;
498 8e278d17 2020-03-18 stsp 	}
499 93658fb9 2020-03-18 stsp 
500 66cba96f 2020-03-18 stsp 	if (asprintf(&idxpath, "%s/%s/pack-%s.idx",
501 66cba96f 2020-03-18 stsp 	    repo_path, GOT_OBJECTS_PACK_DIR, id_str) == -1) {
502 8e278d17 2020-03-18 stsp 		err = got_error_from_errno("asprintf");
503 8e278d17 2020-03-18 stsp 		goto done;
504 8e278d17 2020-03-18 stsp 	}
505 bc5e881a 2022-03-23 stsp 	free(id_str);
506 bc5e881a 2022-03-23 stsp 	id_str = NULL;
507 afa77e03 2020-03-18 stsp 
508 8e278d17 2020-03-18 stsp 	if (rename(tmppackpath, packpath) == -1) {
509 8e278d17 2020-03-18 stsp 		err = got_error_from_errno3("rename", tmppackpath, packpath);
510 8e278d17 2020-03-18 stsp 		goto done;
511 8e278d17 2020-03-18 stsp 	}
512 7848a0e1 2020-03-19 stsp 	free(tmppackpath);
513 7848a0e1 2020-03-19 stsp 	tmppackpath = NULL;
514 8e278d17 2020-03-18 stsp 	if (rename(tmpidxpath, idxpath) == -1) {
515 8e278d17 2020-03-18 stsp 		err = got_error_from_errno3("rename", tmpidxpath, idxpath);
516 8e278d17 2020-03-18 stsp 		goto done;
517 8e278d17 2020-03-18 stsp 	}
518 7848a0e1 2020-03-19 stsp 	free(tmpidxpath);
519 7848a0e1 2020-03-19 stsp 	tmpidxpath = NULL;
520 ee61b6d3 2020-03-18 stsp 
521 8e278d17 2020-03-18 stsp done:
522 7848a0e1 2020-03-19 stsp 	if (tmppackpath && unlink(tmppackpath) == -1 && err == NULL)
523 7848a0e1 2020-03-19 stsp 		err = got_error_from_errno2("unlink", tmppackpath);
524 7848a0e1 2020-03-19 stsp 	if (tmpidxpath && unlink(tmpidxpath) == -1 && err == NULL)
525 7848a0e1 2020-03-19 stsp 		err = got_error_from_errno2("unlink", tmpidxpath);
526 20eb36d0 2020-03-18 stsp 	if (nfetchfd != -1 && close(nfetchfd) == -1 && err == NULL)
527 8e278d17 2020-03-18 stsp 		err = got_error_from_errno("close");
528 8e278d17 2020-03-18 stsp 	if (npackfd != -1 && close(npackfd) == -1 && err == NULL)
529 8e278d17 2020-03-18 stsp 		err = got_error_from_errno("close");
530 8e278d17 2020-03-18 stsp 	if (packfd != -1 && close(packfd) == -1 && err == NULL)
531 8e278d17 2020-03-18 stsp 		err = got_error_from_errno("close");
532 8e278d17 2020-03-18 stsp 	if (idxfd != -1 && close(idxfd) == -1 && err == NULL)
533 8e278d17 2020-03-18 stsp 		err = got_error_from_errno("close");
534 d582f26c 2020-03-18 stsp 	for (i = 0; i < nitems(tmpfds); i++) {
535 d582f26c 2020-03-18 stsp 		if (tmpfds[i] != -1 && close(tmpfds[i]) == -1 && err == NULL)
536 d582f26c 2020-03-18 stsp 			err = got_error_from_errno("close");
537 d582f26c 2020-03-18 stsp 	}
538 afa77e03 2020-03-18 stsp 	free(tmppackpath);
539 afa77e03 2020-03-18 stsp 	free(tmpidxpath);
540 fe4e1501 2020-03-18 stsp 	free(idxpath);
541 bc5e881a 2022-03-23 stsp 	free(id_str);
542 afa77e03 2020-03-18 stsp 	free(packpath);
543 f1c6967f 2020-03-19 stsp 	free(progress);
544 fe4e1501 2020-03-18 stsp 
545 d8bacb93 2023-01-10 mark 	got_pathlist_free(&have_refs, GOT_PATHLIST_FREE_ALL);
546 7848a0e1 2020-03-19 stsp 	got_ref_list_free(&my_refs);
547 d9b4d0c0 2020-03-18 stsp 	if (err) {
548 d9b4d0c0 2020-03-18 stsp 		free(*pack_hash);
549 d9b4d0c0 2020-03-18 stsp 		*pack_hash = NULL;
550 d8bacb93 2023-01-10 mark 		got_pathlist_free(refs, GOT_PATHLIST_FREE_ALL);
551 d8bacb93 2023-01-10 mark 		got_pathlist_free(symrefs, GOT_PATHLIST_FREE_ALL);
552 d9b4d0c0 2020-03-18 stsp 	}
553 8e278d17 2020-03-18 stsp 	return err;
554 93658fb9 2020-03-18 stsp }