Commit | Line | Data |
---|---|---|
0f78b815 WD |
1 | /* |
2 | * The socket based protocol for setting up a connection with rsyncd. | |
4a7144ee | 3 | * |
0f78b815 WD |
4 | * Copyright (C) 1998-2001 Andrew Tridgell <tridge@samba.org> |
5 | * Copyright (C) 2001-2002 Martin Pool <mbp@samba.org> | |
ba2133d6 | 6 | * Copyright (C) 2002-2007 Wayne Davison |
4a7144ee | 7 | * |
a254fd97 | 8 | * This program is free software; you can redistribute it and/or modify |
8e41b68e WD |
9 | * it under the terms of the GNU General Public License as published by |
10 | * the Free Software Foundation; either version 3 of the License, or | |
11 | * (at your option) any later version. | |
4a7144ee | 12 | * |
a254fd97 MP |
13 | * This program is distributed in the hope that it will be useful, |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
4a7144ee | 17 | * |
e7c67065 | 18 | * You should have received a copy of the GNU General Public License along |
4fd842f9 | 19 | * with this program; if not, visit the http://fsf.org website. |
a254fd97 | 20 | */ |
3591c066 | 21 | |
3591c066 | 22 | #include "rsync.h" |
1b42f628 | 23 | #include "ifuncs.h" |
3591c066 | 24 | |
c0814b81 | 25 | extern int verbose; |
5223b786 | 26 | extern int dry_run; |
9ce7fc38 | 27 | extern int output_motd; |
c0814b81 | 28 | extern int list_only; |
6e195fe9 WD |
29 | extern int am_sender; |
30 | extern int am_server; | |
31 | extern int am_daemon; | |
32 | extern int am_root; | |
3591c066 | 33 | extern int rsync_port; |
3162ea6f | 34 | extern int ignore_errors; |
8dad7fc6 | 35 | extern int kluge_around_eof; |
6e195fe9 | 36 | extern int daemon_over_rsh; |
b35d0d8e | 37 | extern int sanitize_paths; |
0b52f94d | 38 | extern int numeric_ids; |
7c2a9e76 | 39 | extern int filesfrom_fd; |
daa598df WD |
40 | extern int remote_protocol; |
41 | extern int protocol_version; | |
6e195fe9 | 42 | extern int io_timeout; |
6e195fe9 | 43 | extern int no_detach; |
5223b786 | 44 | extern int write_batch; |
6e195fe9 | 45 | extern int default_af_hint; |
ecc7623e WD |
46 | extern int logfile_format_has_i; |
47 | extern int logfile_format_has_o_or_i; | |
c5b7aa15 | 48 | extern mode_t orig_umask; |
6e195fe9 | 49 | extern char *bind_address; |
34937987 | 50 | extern char *sockopts; |
6e195fe9 | 51 | extern char *config_file; |
ecc7623e | 52 | extern char *logfile_format; |
bf4679e8 | 53 | extern char *files_from; |
fed1f3f4 | 54 | extern char *tmpdir; |
730df9d2 WD |
55 | extern struct chmod_mode_struct *chmod_modes; |
56 | extern struct filter_list_struct server_filter_list; | |
33cbd577 | 57 | extern char curr_dir[]; |
0b52f94d WD |
58 | #ifdef ICONV_OPTION |
59 | extern char *iconv_opt; | |
60 | extern iconv_t ic_send, ic_recv; | |
61 | #endif | |
6e195fe9 WD |
62 | |
63 | char *auth_user; | |
18638730 | 64 | int read_only = 0; |
211bc43b | 65 | int module_id = -1; |
9585b276 | 66 | int munge_symlinks = 0; |
8840ec0f | 67 | struct chmod_mode_struct *daemon_chmod_modes; |
3591c066 | 68 | |
33cbd577 WD |
69 | /* module_dirlen is the length of the module_dir string when in daemon |
70 | * mode, not chrooted, and the path is not "/"; otherwise 0. */ | |
71 | char *module_dir = NULL; | |
e7bf7c01 WD |
72 | unsigned int module_dirlen = 0; |
73 | ||
7909e65f WD |
74 | static int rl_nulls = 0; |
75 | ||
d749eb68 WD |
76 | #ifdef HAVE_SIGACTION |
77 | static struct sigaction sigact; | |
78 | #endif | |
79 | ||
be2961da | 80 | /** |
bc363ea9 | 81 | * Run a client connected to an rsyncd. The alternative to this |
be2961da MP |
82 | * function for remote-shell connections is do_cmd(). |
83 | * | |
fdf88d75 MP |
84 | * After negotiating which module to use and reading the server's |
85 | * motd, this hands over to client_run(). Telling the server the | |
86 | * module will cause it to chroot/setuid/etc. | |
87 | * | |
88 | * Instead of doing a transfer, the client may at this stage instead | |
89 | * get a listing of remote modules and exit. | |
be2961da MP |
90 | * |
91 | * @return -1 for error in startup, or the result of client_run(). | |
d0829892 | 92 | * Either way, it eventually gets passed to exit_cleanup(). |
be2961da | 93 | **/ |
7909e65f WD |
94 | int start_socket_client(char *host, int remote_argc, char *remote_argv[], |
95 | int argc, char *argv[]) | |
3591c066 | 96 | { |
68f40ebb | 97 | int fd, ret; |
2e94e70e | 98 | char *p, *user = NULL; |
4a7144ee | 99 | |
1732b6c0 WD |
100 | /* This is redundant with code in start_inband_exchange(), but this |
101 | * short-circuits a problem in the client before we open a socket, | |
102 | * and the extra check won't hurt. */ | |
7909e65f | 103 | if (**remote_argv == '/') { |
1732b6c0 WD |
104 | rprintf(FERROR, |
105 | "ERROR: The remote path must start with a module name not a /\n"); | |
f98df1d9 AT |
106 | return -1; |
107 | } | |
108 | ||
b31c92ed | 109 | if ((p = strrchr(host, '@')) != NULL) { |
bcb7e502 AT |
110 | user = host; |
111 | host = p+1; | |
1732b6c0 | 112 | *p = '\0'; |
bcb7e502 AT |
113 | } |
114 | ||
837cbad9 WD |
115 | fd = open_socket_out_wrapped(host, rsync_port, bind_address, |
116 | default_af_hint); | |
df5cd107 | 117 | if (fd == -1) |
65417579 | 118 | exit_cleanup(RERR_SOCKETIO); |
68f40ebb | 119 | |
34937987 WD |
120 | set_socket_options(fd, sockopts); |
121 | ||
7909e65f | 122 | ret = start_inband_exchange(fd, fd, user, remote_argc, remote_argv); |
68f40ebb | 123 | |
180443af | 124 | return ret ? ret : client_run(fd, fd, -1, argc, argv); |
68f40ebb WD |
125 | } |
126 | ||
7909e65f WD |
127 | static int exchange_protocols(int f_in, int f_out, char *buf, size_t bufsiz, int am_client) |
128 | { | |
129 | int remote_sub = -1; | |
130 | #if SUBPROTOCOL_VERSION != 0 | |
131 | int our_sub = protocol_version < PROTOCOL_VERSION ? 0 : SUBPROTOCOL_VERSION; | |
132 | #else | |
133 | int our_sub = 0; | |
134 | #endif | |
135 | char *motd; | |
136 | ||
137 | io_printf(f_out, "@RSYNCD: %d.%d\n", protocol_version, our_sub); | |
138 | ||
139 | if (!am_client) { | |
140 | motd = lp_motd_file(); | |
141 | if (motd && *motd) { | |
142 | FILE *f = fopen(motd,"r"); | |
143 | while (f && !feof(f)) { | |
144 | int len = fread(buf, 1, bufsiz - 1, f); | |
145 | if (len > 0) | |
146 | write_buf(f_out, buf, len); | |
147 | } | |
148 | if (f) | |
149 | fclose(f); | |
150 | write_sbuf(f_out, "\n"); | |
151 | } | |
152 | } | |
153 | ||
154 | /* This strips the \n. */ | |
155 | if (!read_line_old(f_in, buf, bufsiz)) { | |
156 | if (am_client) | |
157 | rprintf(FERROR, "rsync: did not see server greeting\n"); | |
158 | return -1; | |
159 | } | |
160 | ||
161 | if (sscanf(buf, "@RSYNCD: %d.%d", &remote_protocol, &remote_sub) < 1) { | |
162 | if (am_client) | |
163 | rprintf(FERROR, "rsync: server sent \"%s\" rather than greeting\n", buf); | |
164 | else | |
165 | io_printf(f_out, "@ERROR: protocol startup error\n"); | |
166 | return -1; | |
167 | } | |
168 | ||
169 | if (remote_sub < 0) { | |
170 | if (remote_protocol == 30) { | |
171 | if (am_client) | |
172 | rprintf(FERROR, "rsync: server is speaking an incompatible beta of protocol 30\n"); | |
173 | else | |
174 | io_printf(f_out, "@ERROR: your client is speaking an incompatible beta of protocol 30\n"); | |
175 | return -1; | |
176 | } | |
177 | remote_sub = 0; | |
178 | } | |
179 | ||
180 | if (protocol_version > remote_protocol) { | |
181 | protocol_version = remote_protocol; | |
182 | if (remote_sub) | |
183 | protocol_version--; | |
184 | } else if (protocol_version == remote_protocol) { | |
185 | if (remote_sub != our_sub) | |
186 | protocol_version--; | |
187 | } | |
188 | #if SUBPROTOCOL_VERSION != 0 | |
189 | else if (protocol_version < remote_protocol) { | |
190 | if (our_sub) | |
191 | protocol_version--; | |
192 | } | |
193 | #endif | |
194 | ||
195 | if (protocol_version >= 30) | |
196 | rl_nulls = 1; | |
197 | ||
198 | return 0; | |
199 | } | |
200 | ||
201 | int start_inband_exchange(int f_in, int f_out, const char *user, int argc, char *argv[]) | |
68f40ebb | 202 | { |
e844a4a8 | 203 | int i, modlen; |
7909e65f | 204 | char line[BIGPATHBUFLEN]; |
68f40ebb WD |
205 | char *sargs[MAX_ARGS]; |
206 | int sargc = 0; | |
e844a4a8 | 207 | char *p, *modname; |
68f40ebb | 208 | |
e844a4a8 | 209 | assert(argc > 0); |
68f40ebb | 210 | |
e844a4a8 | 211 | if (**argv == '/') { |
1732b6c0 WD |
212 | rprintf(FERROR, |
213 | "ERROR: The remote path must start with a module name\n"); | |
68f40ebb WD |
214 | return -1; |
215 | } | |
216 | ||
e844a4a8 WD |
217 | if (!(p = strchr(*argv, '/'))) |
218 | modlen = strlen(*argv); | |
219 | else | |
220 | modlen = p - *argv; | |
221 | ||
222 | if (!(modname = new_array(char, modlen+1+1))) /* room for '/' & '\0' */ | |
223 | out_of_memory("start_inband_exchange"); | |
224 | strlcpy(modname, *argv, modlen + 1); | |
225 | modname[modlen] = '/'; | |
226 | modname[modlen+1] = '\0'; | |
227 | ||
2e94e70e WD |
228 | if (!user) |
229 | user = getenv("USER"); | |
230 | if (!user) | |
231 | user = getenv("LOGNAME"); | |
68f40ebb | 232 | |
7909e65f | 233 | if (exchange_protocols(f_in, f_out, line, sizeof line, 1) < 0) |
3591c066 | 234 | return -1; |
3591c066 | 235 | |
9bcb2595 WD |
236 | /* set daemon_over_rsh to false since we need to build the |
237 | * true set of args passed through the rsh/ssh connection; | |
238 | * this is a no-op for direct-socket-connection mode */ | |
239 | daemon_over_rsh = 0; | |
240 | server_options(sargs, &sargc); | |
241 | ||
7909e65f WD |
242 | if (sargc >= MAX_ARGS - 2) |
243 | goto arg_overflow; | |
244 | ||
9bcb2595 WD |
245 | sargs[sargc++] = "."; |
246 | ||
7909e65f WD |
247 | while (argc > 0) { |
248 | if (sargc >= MAX_ARGS - 1) { | |
249 | arg_overflow: | |
250 | rprintf(FERROR, "internal: args[] overflowed in do_cmd()\n"); | |
251 | exit_cleanup(RERR_SYNTAX); | |
252 | } | |
d348d5fd | 253 | if (strncmp(*argv, modname, modlen) == 0 |
e844a4a8 WD |
254 | && argv[0][modlen] == '\0') |
255 | sargs[sargc++] = modname; /* we send "modname/" */ | |
256 | else | |
257 | sargs[sargc++] = *argv; | |
258 | argv++; | |
7909e65f WD |
259 | argc--; |
260 | } | |
9bcb2595 WD |
261 | |
262 | sargs[sargc] = NULL; | |
263 | ||
264 | if (verbose > 1) | |
0b515981 | 265 | print_child_argv("sending daemon args:", sargs); |
9bcb2595 | 266 | |
e844a4a8 | 267 | io_printf(f_out, "%.*s\n", modlen, modname); |
2c91d3d3 | 268 | |
063393d6 MP |
269 | /* Old servers may just drop the connection here, |
270 | rather than sending a proper EXIT command. Yuck. */ | |
8dad7fc6 | 271 | kluge_around_eof = list_only && protocol_version < 25 ? 1 : 0; |
7a55d06e | 272 | |
063393d6 | 273 | while (1) { |
7909e65f | 274 | if (!read_line_old(f_in, line, sizeof line)) { |
be2961da | 275 | rprintf(FERROR, "rsync: didn't get server startup line\n"); |
3591c066 AT |
276 | return -1; |
277 | } | |
31593dd6 | 278 | |
31593dd6 | 279 | if (strncmp(line,"@RSYNCD: AUTHREQD ",18) == 0) { |
68f40ebb | 280 | auth_client(f_out, user, line+18); |
31593dd6 AT |
281 | continue; |
282 | } | |
31593dd6 | 283 | |
2e94e70e WD |
284 | if (strcmp(line,"@RSYNCD: OK") == 0) |
285 | break; | |
8f04bb36 | 286 | |
cae95647 MP |
287 | if (strcmp(line,"@RSYNCD: EXIT") == 0) { |
288 | /* This is sent by recent versions of the | |
289 | * server to terminate the listing of modules. | |
290 | * We don't want to go on and transfer | |
291 | * anything; just exit. */ | |
292 | exit(0); | |
293 | } | |
8f04bb36 | 294 | |
136ac7ec | 295 | if (strncmp(line, "@ERROR", 6) == 0) { |
1732b6c0 | 296 | rprintf(FERROR, "%s\n", line); |
136ac7ec MP |
297 | /* This is always fatal; the server will now |
298 | * close the socket. */ | |
180443af | 299 | return -1; |
136ac7ec | 300 | } |
180443af | 301 | |
9ce7fc38 WD |
302 | /* This might be a MOTD line or a module listing, but there is |
303 | * no way to differentiate it. The manpage mentions this. */ | |
304 | if (output_motd) | |
305 | rprintf(FINFO, "%s\n", line); | |
3591c066 | 306 | } |
8dad7fc6 | 307 | kluge_around_eof = 0; |
3591c066 | 308 | |
7909e65f WD |
309 | if (rl_nulls) { |
310 | for (i = 0; i < sargc; i++) { | |
311 | write_sbuf(f_out, sargs[i]); | |
312 | write_byte(f_out, 0); | |
313 | } | |
314 | write_byte(f_out, 0); | |
315 | } else { | |
316 | for (i = 0; i < sargc; i++) | |
317 | io_printf(f_out, "%s\n", sargs[i]); | |
318 | write_sbuf(f_out, "\n"); | |
3591c066 | 319 | } |
3591c066 | 320 | |
daa598df | 321 | if (protocol_version < 23) { |
3f55bd5d | 322 | if (protocol_version == 22 || !am_sender) |
da3478b2 | 323 | io_start_multiplex_in(); |
09b7f5db | 324 | } |
8d9dc9f9 | 325 | |
e844a4a8 WD |
326 | free(modname); |
327 | ||
68f40ebb | 328 | return 0; |
3591c066 AT |
329 | } |
330 | ||
141c6265 WD |
331 | static char *finish_pre_exec(pid_t pid, int fd, char *request, |
332 | int argc, char *argv[]) | |
c95ca2a2 | 333 | { |
141c6265 | 334 | int j, status = -1; |
3591c066 | 335 | |
7909e65f WD |
336 | if (!request) |
337 | request = "(NONE)"; | |
141c6265 | 338 | |
7909e65f WD |
339 | write_buf(fd, request, strlen(request)+1); |
340 | for (j = 0; j < argc; j++) | |
341 | write_buf(fd, argv[j], strlen(argv[j])+1); | |
141c6265 WD |
342 | write_byte(fd, 0); |
343 | ||
c95ca2a2 WD |
344 | close(fd); |
345 | ||
346 | if (wait_process(pid, &status, 0) < 0 | |
347 | || !WIFEXITED(status) || WEXITSTATUS(status) != 0) { | |
348 | char *e; | |
d0236360 WD |
349 | if (asprintf(&e, "pre-xfer exec returned failure (%d)%s%s\n", |
350 | status, status < 0 ? ": " : "", | |
351 | status < 0 ? strerror(errno) : "") < 0) | |
c95ca2a2 WD |
352 | out_of_memory("finish_pre_exec"); |
353 | return e; | |
354 | } | |
355 | return NULL; | |
356 | } | |
3591c066 | 357 | |
141c6265 WD |
358 | static int read_arg_from_pipe(int fd, char *buf, int limit) |
359 | { | |
360 | char *bp = buf, *eob = buf + limit - 1; | |
361 | ||
362 | while (1) { | |
62a6b8df WD |
363 | int got = read(fd, bp, 1); |
364 | if (got != 1) { | |
365 | if (got < 0 && errno == EINTR) | |
366 | continue; | |
141c6265 | 367 | return -1; |
62a6b8df | 368 | } |
141c6265 WD |
369 | if (*bp == '\0') |
370 | break; | |
371 | if (bp < eob) | |
372 | bp++; | |
373 | } | |
374 | *bp = '\0'; | |
375 | ||
376 | return bp - buf; | |
377 | } | |
378 | ||
439a198d | 379 | static int rsync_module(int f_in, int f_out, int i, char *addr, char *host) |
3591c066 | 380 | { |
7909e65f | 381 | int argc, opt_cnt; |
b7061c82 | 382 | char **argv; |
20accf4d | 383 | char line[BIGPATHBUFLEN]; |
2af27ad9 | 384 | uid_t uid = (uid_t)-2; /* canonically "nobody" */ |
1a016bfd | 385 | gid_t gid = (gid_t)-2; |
c95ca2a2 | 386 | char *p, *err_msg = NULL; |
874895d5 | 387 | char *name = lp_name(i); |
8638dd48 | 388 | int use_chroot = lp_use_chroot(i); |
c95ca2a2 WD |
389 | int ret, pre_exec_fd = -1; |
390 | pid_t pre_exec_pid = 0; | |
2e94e70e | 391 | char *request = NULL; |
56c473b7 | 392 | |
0b52f94d WD |
393 | #ifdef ICONV_CONST |
394 | iconv_opt = lp_charset(i); | |
395 | if (*iconv_opt) | |
396 | setup_iconv(); | |
397 | iconv_opt = NULL; | |
398 | #endif | |
399 | ||
56c473b7 | 400 | if (!allow_access(addr, host, lp_hosts_allow(i), lp_hosts_deny(i))) { |
1732b6c0 | 401 | rprintf(FLOG, "rsync denied on module %s from %s (%s)\n", |
31ec50d7 | 402 | name, host, addr); |
c0422cea WD |
403 | if (!lp_list(i)) |
404 | io_printf(f_out, "@ERROR: Unknown module '%s'\n", name); | |
405 | else { | |
406 | io_printf(f_out, | |
407 | "@ERROR: access denied to %s from %s (%s)\n", | |
408 | name, host, addr); | |
409 | } | |
56c473b7 AT |
410 | return -1; |
411 | } | |
3591c066 | 412 | |
68f40ebb | 413 | if (am_daemon && am_server) { |
9e5a5ddb | 414 | rprintf(FLOG, "rsync allowed access on module %s from %s (%s)\n", |
68f40ebb WD |
415 | name, host, addr); |
416 | } | |
417 | ||
5e71c444 | 418 | if (!claim_connection(lp_lock_file(i), lp_max_connections(i))) { |
8d72ef6e | 419 | if (errno) { |
1732b6c0 | 420 | rsyserr(FLOG, errno, "failed to open lock file %s", |
45c49b52 | 421 | lp_lock_file(i)); |
4875d6b6 | 422 | io_printf(f_out, "@ERROR: failed to open lock file\n"); |
8d72ef6e | 423 | } else { |
1732b6c0 | 424 | rprintf(FLOG, "max connections (%d) reached\n", |
5e71c444 | 425 | lp_max_connections(i)); |
4ccfd96c | 426 | io_printf(f_out, "@ERROR: max connections (%d) reached -- try again later\n", |
837cbad9 | 427 | lp_max_connections(i)); |
8d72ef6e | 428 | } |
0c515f17 AT |
429 | return -1; |
430 | } | |
431 | ||
45c5b903 | 432 | auth_user = auth_server(f_in, f_out, i, host, addr, "@RSYNCD: AUTHREQD "); |
d0d56395 | 433 | |
97cb8dc2 | 434 | if (!auth_user) { |
68f40ebb | 435 | io_printf(f_out, "@ERROR: auth failed on module %s\n", name); |
4a7144ee | 436 | return -1; |
d0d56395 AT |
437 | } |
438 | ||
3591c066 AT |
439 | module_id = i; |
440 | ||
211bc43b | 441 | if (lp_read_only(i)) |
18638730 WD |
442 | read_only = 1; |
443 | ||
10ae3406 | 444 | if (lp_transfer_logging(i) && !logfile_format) |
ecc7623e | 445 | logfile_format = lp_log_format(i); |
10ae3406 WD |
446 | if (log_format_has(logfile_format, 'i')) |
447 | logfile_format_has_i = 1; | |
448 | if (logfile_format_has_i || log_format_has(logfile_format, 'o')) | |
449 | logfile_format_has_o_or_i = 1; | |
c0814b81 | 450 | |
6fe05820 | 451 | am_root = (MY_UID() == 0); |
8ef4ffd6 | 452 | |
716baed7 DD |
453 | if (am_root) { |
454 | p = lp_uid(i); | |
455 | if (!name_to_uid(p, &uid)) { | |
2dc7b8bd | 456 | if (!isDigit(p)) { |
1732b6c0 | 457 | rprintf(FLOG, "Invalid uid %s\n", p); |
68f40ebb | 458 | io_printf(f_out, "@ERROR: invalid uid %s\n", p); |
716baed7 | 459 | return -1; |
4a7144ee | 460 | } |
716baed7 DD |
461 | uid = atoi(p); |
462 | } | |
463 | ||
464 | p = lp_gid(i); | |
465 | if (!name_to_gid(p, &gid)) { | |
2dc7b8bd | 466 | if (!isDigit(p)) { |
1732b6c0 | 467 | rprintf(FLOG, "Invalid gid %s\n", p); |
68f40ebb | 468 | io_printf(f_out, "@ERROR: invalid gid %s\n", p); |
716baed7 | 469 | return -1; |
4a7144ee | 470 | } |
716baed7 DD |
471 | gid = atoi(p); |
472 | } | |
8ef4ffd6 | 473 | } |
3b2b5345 | 474 | |
4a7144ee WD |
475 | /* TODO: If we're not root, but the configuration requests |
476 | * that we change to some uid other than the current one, then | |
477 | * log a warning. */ | |
478 | ||
479 | /* TODO: Perhaps take a list of gids, and make them into the | |
480 | * supplementary groups. */ | |
8ef4ffd6 | 481 | |
33cbd577 WD |
482 | /* We do a push_dir() without actually calling chdir() in order |
483 | * to make sure that the module's path is absolute. After this | |
484 | * check, module_dir will be set to an absolute path. */ | |
485 | module_dir = lp_path(i); | |
486 | strlcpy(line, curr_dir, sizeof line); | |
487 | if (!push_dir(module_dir, 1)) | |
488 | goto chdir_failed; | |
489 | if (strcmp(curr_dir, module_dir) != 0) | |
490 | module_dir = strdup(curr_dir); | |
491 | push_dir(line, 1); /* Restore curr_dir. */ | |
492 | ||
493 | if (use_chroot || (module_dirlen = strlen(module_dir)) == 1) { | |
e7bf7c01 | 494 | module_dirlen = 0; |
7842418b | 495 | set_filter_dir("/", 1); |
46bffd98 | 496 | } else |
33cbd577 | 497 | set_filter_dir(module_dir, module_dirlen); |
e7bf7c01 WD |
498 | |
499 | p = lp_filter(i); | |
ebfd1a1c | 500 | parse_rule(&server_filter_list, p, MATCHFLG_WORD_SPLIT, |
2c8c8bba | 501 | XFLG_ABS_IF_SLASH); |
837cbad9 | 502 | |
cd64343a | 503 | p = lp_include_from(i); |
ebfd1a1c | 504 | parse_filter_file(&server_filter_list, p, MATCHFLG_INCLUDE, |
2c8c8bba | 505 | XFLG_ABS_IF_SLASH | XFLG_OLD_PREFIXES | XFLG_FATAL_ERRORS); |
cd64343a DD |
506 | |
507 | p = lp_include(i); | |
ebfd1a1c | 508 | parse_rule(&server_filter_list, p, |
0a68f869 | 509 | MATCHFLG_INCLUDE | MATCHFLG_WORD_SPLIT, |
2c8c8bba | 510 | XFLG_ABS_IF_SLASH | XFLG_OLD_PREFIXES); |
cd64343a | 511 | |
8f3a2d54 | 512 | p = lp_exclude_from(i); |
ebfd1a1c | 513 | parse_filter_file(&server_filter_list, p, 0, |
2c8c8bba | 514 | XFLG_ABS_IF_SLASH | XFLG_OLD_PREFIXES | XFLG_FATAL_ERRORS); |
8f3a2d54 | 515 | |
5805327b | 516 | p = lp_exclude(i); |
ebfd1a1c | 517 | parse_rule(&server_filter_list, p, MATCHFLG_WORD_SPLIT, |
2c8c8bba | 518 | XFLG_ABS_IF_SLASH | XFLG_OLD_PREFIXES); |
8f3a2d54 | 519 | |
6dc9b74b | 520 | log_init(1); |
1a016bfd | 521 | |
9d0d18b5 | 522 | #ifdef HAVE_PUTENV |
c95ca2a2 | 523 | if (*lp_prexfer_exec(i) || *lp_postxfer_exec(i)) { |
9d0d18b5 WD |
524 | char *modname, *modpath, *hostaddr, *hostname, *username; |
525 | int status; | |
526 | if (asprintf(&modname, "RSYNC_MODULE_NAME=%s", name) < 0 | |
33cbd577 | 527 | || asprintf(&modpath, "RSYNC_MODULE_PATH=%s", module_dir) < 0 |
9d0d18b5 WD |
528 | || asprintf(&hostaddr, "RSYNC_HOST_ADDR=%s", addr) < 0 |
529 | || asprintf(&hostname, "RSYNC_HOST_NAME=%s", host) < 0 | |
530 | || asprintf(&username, "RSYNC_USER_NAME=%s", auth_user) < 0) | |
531 | out_of_memory("rsync_module"); | |
532 | putenv(modname); | |
533 | putenv(modpath); | |
534 | putenv(hostaddr); | |
535 | putenv(hostname); | |
536 | putenv(username); | |
537 | umask(orig_umask); | |
c95ca2a2 WD |
538 | /* For post-xfer exec, fork a new process to run the rsync |
539 | * daemon while this process waits for the exit status and | |
540 | * runs the indicated command at that point. */ | |
541 | if (*lp_postxfer_exec(i)) { | |
9d0d18b5 WD |
542 | pid_t pid = fork(); |
543 | if (pid < 0) { | |
544 | rsyserr(FLOG, errno, "fork failed"); | |
545 | io_printf(f_out, "@ERROR: fork failed\n"); | |
546 | return -1; | |
547 | } | |
548 | if (pid) { | |
503114a7 WD |
549 | if (asprintf(&p, "RSYNC_PID=%ld", (long)pid) > 0) |
550 | putenv(p); | |
c95ca2a2 WD |
551 | if (wait_process(pid, &status, 0) < 0) |
552 | status = -1; | |
503114a7 WD |
553 | if (asprintf(&p, "RSYNC_RAW_STATUS=%d", status) > 0) |
554 | putenv(p); | |
9d0d18b5 WD |
555 | if (WIFEXITED(status)) |
556 | status = WEXITSTATUS(status); | |
557 | else | |
558 | status = -1; | |
503114a7 WD |
559 | if (asprintf(&p, "RSYNC_EXIT_STATUS=%d", status) > 0) |
560 | putenv(p); | |
c95ca2a2 | 561 | system(lp_postxfer_exec(i)); |
9d0d18b5 WD |
562 | _exit(status); |
563 | } | |
564 | } | |
c95ca2a2 WD |
565 | /* For pre-xfer exec, fork a child process to run the indicated |
566 | * command, though it first waits for the parent process to | |
567 | * send us the user's request via a pipe. */ | |
568 | if (*lp_prexfer_exec(i)) { | |
569 | int fds[2]; | |
503114a7 WD |
570 | if (asprintf(&p, "RSYNC_PID=%ld", (long)getpid()) > 0) |
571 | putenv(p); | |
c95ca2a2 WD |
572 | if (pipe(fds) < 0 || (pre_exec_pid = fork()) < 0) { |
573 | rsyserr(FLOG, errno, "pre-xfer exec preparation failed"); | |
574 | io_printf(f_out, "@ERROR: pre-xfer exec preparation failed\n"); | |
575 | return -1; | |
576 | } | |
577 | if (pre_exec_pid == 0) { | |
141c6265 WD |
578 | char buf[BIGPATHBUFLEN]; |
579 | int j, len; | |
c95ca2a2 WD |
580 | close(fds[1]); |
581 | set_blocking(fds[0]); | |
141c6265 | 582 | len = read_arg_from_pipe(fds[0], buf, BIGPATHBUFLEN); |
c95ca2a2 WD |
583 | if (len <= 0) |
584 | _exit(1); | |
503114a7 WD |
585 | if (asprintf(&p, "RSYNC_REQUEST=%s", buf) > 0) |
586 | putenv(p); | |
141c6265 WD |
587 | for (j = 0; ; j++) { |
588 | len = read_arg_from_pipe(fds[0], buf, | |
589 | BIGPATHBUFLEN); | |
590 | if (len <= 0) { | |
591 | if (!len) | |
592 | break; | |
593 | _exit(1); | |
594 | } | |
503114a7 WD |
595 | if (asprintf(&p, "RSYNC_ARG%d=%s", j, buf) > 0) |
596 | putenv(p); | |
141c6265 WD |
597 | } |
598 | close(fds[0]); | |
c95ca2a2 WD |
599 | close(STDIN_FILENO); |
600 | close(STDOUT_FILENO); | |
601 | status = system(lp_prexfer_exec(i)); | |
602 | if (!WIFEXITED(status)) | |
603 | _exit(1); | |
604 | _exit(WEXITSTATUS(status)); | |
605 | } | |
606 | close(fds[0]); | |
607 | set_blocking(fds[1]); | |
608 | pre_exec_fd = fds[1]; | |
609 | } | |
9d0d18b5 WD |
610 | umask(0); |
611 | } | |
612 | #endif | |
613 | ||
8638dd48 | 614 | if (use_chroot) { |
b52c1d9d MP |
615 | /* |
616 | * XXX: The 'use chroot' flag is a fairly reliable | |
617 | * source of confusion, because it fails under two | |
618 | * important circumstances: running as non-root, | |
619 | * running on Win32 (or possibly others). On the | |
620 | * other hand, if you are running as root, then it | |
621 | * might be better to always use chroot. | |
622 | * | |
623 | * So, perhaps if we can't chroot we should just issue | |
624 | * a warning, unless a "require chroot" flag is set, | |
625 | * in which case we fail. | |
626 | */ | |
33cbd577 WD |
627 | if (chroot(module_dir)) { |
628 | rsyserr(FLOG, errno, "chroot %s failed", module_dir); | |
68f40ebb | 629 | io_printf(f_out, "@ERROR: chroot failed\n"); |
8638dd48 DD |
630 | return -1; |
631 | } | |
33cbd577 WD |
632 | if (!push_dir("/", 0)) |
633 | goto chdir_failed; | |
716baed7 | 634 | } else { |
33cbd577 WD |
635 | if (!push_dir(module_dir, 0)) { |
636 | chdir_failed: | |
637 | rsyserr(FLOG, errno, "chdir %s failed\n", module_dir); | |
68f40ebb | 638 | io_printf(f_out, "@ERROR: chdir failed\n"); |
716baed7 DD |
639 | return -1; |
640 | } | |
cb13abfe | 641 | sanitize_paths = 1; |
716baed7 DD |
642 | } |
643 | ||
9585b276 WD |
644 | if ((munge_symlinks = lp_munge_symlinks(i)) < 0) |
645 | munge_symlinks = !use_chroot; | |
646 | if (munge_symlinks) { | |
647 | STRUCT_STAT st; | |
648 | if (stat(SYMLINK_PREFIX, &st) == 0 && S_ISDIR(st.st_mode)) { | |
649 | rprintf(FLOG, "Symlink munging is unsupported when a %s directory exists.\n", | |
650 | SYMLINK_PREFIX); | |
651 | io_printf(f_out, "@ERROR: daemon security issue -- contact admin\n", name); | |
652 | exit_cleanup(RERR_UNSUPPORTED); | |
653 | } | |
654 | } | |
655 | ||
716baed7 | 656 | if (am_root) { |
715d1f45 MP |
657 | /* XXXX: You could argue that if the daemon is started |
658 | * by a non-root user and they explicitly specify a | |
659 | * gid, then we should try to change to that gid -- | |
660 | * this could be possible if it's already in their | |
661 | * supplementary groups. */ | |
662 | ||
663 | /* TODO: Perhaps we need to document that if rsyncd is | |
664 | * started by somebody other than root it will inherit | |
665 | * all their supplementary groups. */ | |
666 | ||
716baed7 | 667 | if (setgid(gid)) { |
1732b6c0 | 668 | rsyserr(FLOG, errno, "setgid %d failed", (int)gid); |
68f40ebb | 669 | io_printf(f_out, "@ERROR: setgid failed\n"); |
8638dd48 DD |
670 | return -1; |
671 | } | |
4f5b0756 | 672 | #ifdef HAVE_SETGROUPS |
6969ebcf WD |
673 | /* Get rid of any supplementary groups this process |
674 | * might have inheristed. */ | |
675 | if (setgroups(1, &gid)) { | |
1732b6c0 | 676 | rsyserr(FLOG, errno, "setgroups failed"); |
6969ebcf WD |
677 | io_printf(f_out, "@ERROR: setgroups failed\n"); |
678 | return -1; | |
679 | } | |
680 | #endif | |
3591c066 | 681 | |
716baed7 | 682 | if (setuid(uid)) { |
1732b6c0 | 683 | rsyserr(FLOG, errno, "setuid %d failed", (int)uid); |
68f40ebb | 684 | io_printf(f_out, "@ERROR: setuid failed\n"); |
8638dd48 DD |
685 | return -1; |
686 | } | |
687 | ||
6fe05820 | 688 | am_root = (MY_UID() == 0); |
3591c066 AT |
689 | } |
690 | ||
fed1f3f4 WD |
691 | if (lp_temp_dir(i) && *lp_temp_dir(i)) { |
692 | tmpdir = lp_temp_dir(i); | |
693 | if (strlen(tmpdir) >= MAXPATHLEN - 10) { | |
694 | rprintf(FLOG, | |
695 | "the 'temp dir' value for %s is WAY too long -- ignoring.\n", | |
696 | name); | |
697 | tmpdir = NULL; | |
698 | } | |
699 | } | |
700 | ||
68f40ebb | 701 | io_printf(f_out, "@RSYNCD: OK\n"); |
3591c066 | 702 | |
7909e65f | 703 | opt_cnt = read_args(f_in, name, line, sizeof line, rl_nulls, &argv, &argc, &request); |
3591c066 | 704 | |
141c6265 WD |
705 | if (pre_exec_pid) { |
706 | err_msg = finish_pre_exec(pre_exec_pid, pre_exec_fd, request, | |
7909e65f | 707 | opt_cnt, argv); |
141c6265 | 708 | } |
c95ca2a2 | 709 | |
18638730 | 710 | verbose = 0; /* future verbosity is controlled by client options */ |
c9dc1300 | 711 | ret = parse_arguments(&argc, (const char ***) &argv, 0); |
875a13b4 | 712 | am_server = 1; /* Don't let someone try to be tricky. */ |
3162ea6f WD |
713 | if (lp_ignore_errors(module_id)) |
714 | ignore_errors = 1; | |
5223b786 WD |
715 | if (write_batch < 0) |
716 | dry_run = 1; | |
3591c066 | 717 | |
9439c0cb WD |
718 | if (lp_fake_super(i)) |
719 | am_root = -1; | |
720 | else if (am_root < 0) /* Treat --fake-super from client as --super. */ | |
721 | am_root = 2; | |
722 | ||
7c2a9e76 WD |
723 | if (filesfrom_fd == 0) |
724 | filesfrom_fd = f_in; | |
725 | ||
7b372642 | 726 | if (request) { |
97cb8dc2 | 727 | if (*auth_user) { |
9e5a5ddb WD |
728 | rprintf(FLOG, "rsync %s %s from %s@%s (%s)\n", |
729 | am_sender ? "on" : "to", | |
97cb8dc2 | 730 | request, auth_user, host, addr); |
d0d56395 | 731 | } else { |
9e5a5ddb WD |
732 | rprintf(FLOG, "rsync %s %s from %s (%s)\n", |
733 | am_sender ? "on" : "to", | |
d0d56395 AT |
734 | request, host, addr); |
735 | } | |
7b372642 AT |
736 | free(request); |
737 | } | |
738 | ||
15b7b73d | 739 | #ifndef DEBUG |
3591c066 | 740 | /* don't allow the logs to be flooded too fast */ |
59b0e7a8 WD |
741 | if (verbose > lp_max_verbosity(i)) |
742 | verbose = lp_max_verbosity(i); | |
0199b05f | 743 | #endif |
3591c066 | 744 | |
1732b6c0 WD |
745 | if (protocol_version < 23 |
746 | && (protocol_version == 22 || am_sender)) | |
da3478b2 | 747 | io_start_multiplex_out(); |
c95ca2a2 | 748 | else if (!ret || err_msg) { |
1732b6c0 WD |
749 | /* We have to get I/O multiplexing started so that we can |
750 | * get the error back to the client. This means getting | |
751 | * the protocol setup finished first in later versions. */ | |
752 | setup_protocol(f_out, f_in); | |
b03c719f WD |
753 | if (!am_sender) { |
754 | /* Since we failed in our option parsing, we may not | |
755 | * have finished parsing that the client sent us a | |
756 | * --files-from option, so look for it manually. | |
757 | * Without this, the socket would be in the wrong | |
758 | * state for the upcoming error message. */ | |
759 | if (!files_from) { | |
760 | int i; | |
761 | for (i = 0; i < argc; i++) { | |
762 | if (strncmp(argv[i], "--files-from", 12) == 0) { | |
763 | files_from = ""; | |
764 | break; | |
765 | } | |
766 | } | |
767 | } | |
768 | if (files_from) | |
769 | write_byte(f_out, 0); | |
770 | } | |
da3478b2 | 771 | io_start_multiplex_out(); |
554e0a8d | 772 | } |
15b7b73d | 773 | |
c95ca2a2 WD |
774 | if (!ret || err_msg) { |
775 | if (err_msg) | |
332cf6df | 776 | rwrite(FERROR, err_msg, strlen(err_msg), 0); |
c95ca2a2 WD |
777 | else |
778 | option_error(); | |
7e561438 | 779 | msleep(400); |
4a7144ee | 780 | exit_cleanup(RERR_UNSUPPORTED); |
41979ff8 AT |
781 | } |
782 | ||
0b52f94d WD |
783 | if (!iconv_opt) { |
784 | if (ic_send != (iconv_t)-1) { | |
785 | iconv_close(ic_send); | |
786 | ic_send = (iconv_t)-1; | |
787 | } | |
788 | if (ic_recv != (iconv_t)-1) { | |
789 | iconv_close(ic_recv); | |
790 | ic_recv = (iconv_t)-1; | |
791 | } | |
792 | } | |
793 | ||
794 | if (!numeric_ids | |
795 | && (use_chroot ? lp_numeric_ids(i) != False : lp_numeric_ids(i) == True)) | |
796 | numeric_ids = -1; /* Set --numeric-ids w/o breaking protocol. */ | |
797 | ||
3e6ddb37 WD |
798 | if (lp_timeout(i) && lp_timeout(i) > io_timeout) |
799 | set_io_timeout(lp_timeout(i)); | |
81791cfc | 800 | |
f041b025 WD |
801 | /* If we have some incoming/outgoing chmod changes, append them to |
802 | * any user-specified changes (making our changes have priority). | |
803 | * We also get a pointer to just our changes so that a receiver | |
804 | * process can use them separately if --perms wasn't specified. */ | |
aaccaa88 WD |
805 | if (am_sender) |
806 | p = lp_outgoing_chmod(i); | |
807 | else | |
808 | p = lp_incoming_chmod(i); | |
8840ec0f | 809 | if (*p && !(daemon_chmod_modes = parse_chmod(p, &chmod_modes))) { |
aaccaa88 WD |
810 | rprintf(FLOG, "Invalid \"%sing chmod\" directive: %s\n", |
811 | am_sender ? "outgo" : "incom", p); | |
812 | } | |
730df9d2 | 813 | |
c9dc1300 | 814 | start_server(f_in, f_out, argc, argv); |
3591c066 AT |
815 | |
816 | return 0; | |
817 | } | |
818 | ||
7a6421fa AT |
819 | /* send a list of available modules to the client. Don't list those |
820 | with "list = False". */ | |
3591c066 AT |
821 | static void send_listing(int fd) |
822 | { | |
823 | int n = lp_numservices(); | |
824 | int i; | |
063393d6 | 825 | |
c0422cea | 826 | for (i = 0; i < n; i++) { |
3591c066 | 827 | if (lp_list(i)) |
4a7144ee | 828 | io_printf(fd, "%-15s\t%s\n", lp_name(i), lp_comment(i)); |
c0422cea | 829 | } |
8f04bb36 | 830 | |
daa598df | 831 | if (protocol_version >= 25) |
063393d6 | 832 | io_printf(fd,"@RSYNCD: EXIT\n"); |
3591c066 AT |
833 | } |
834 | ||
68f40ebb | 835 | /* this is called when a connection is established to a client |
3591c066 AT |
836 | and we want to start talking. The setup of the system is done from |
837 | here */ | |
68f40ebb | 838 | int start_daemon(int f_in, int f_out) |
3591c066 | 839 | { |
20accf4d | 840 | char line[1024]; |
7909e65f | 841 | char *addr, *host; |
c0422cea | 842 | int i; |
4cdf25e4 | 843 | |
da3478b2 WD |
844 | io_set_sock_fds(f_in, f_out); |
845 | ||
374c3e12 WD |
846 | /* We must load the config file before calling any function that |
847 | * might cause log-file output to occur. This ensures that the | |
848 | * "log file" param gets honored for the 2 non-forked use-cases | |
08e0a629 | 849 | * (when rsync is run by init and run by a remote shell). */ |
2e94e70e | 850 | if (!lp_load(config_file, 0)) |
65417579 | 851 | exit_cleanup(RERR_SYNTAX); |
3591c066 | 852 | |
374c3e12 WD |
853 | addr = client_addr(f_in); |
854 | host = client_name(f_in); | |
855 | rprintf(FLOG, "connect from %s (%s)\n", host, addr); | |
91d324b4 | 856 | |
68f40ebb WD |
857 | if (!am_server) { |
858 | set_socket_options(f_in, "SO_KEEPALIVE"); | |
34937987 WD |
859 | if (sockopts) |
860 | set_socket_options(f_in, sockopts); | |
861 | else | |
862 | set_socket_options(f_in, lp_socket_options()); | |
68f40ebb WD |
863 | set_nonblocking(f_in); |
864 | } | |
3591c066 | 865 | |
7909e65f | 866 | if (exchange_protocols(f_in, f_out, line, sizeof line, 0) < 0) |
91eee594 | 867 | return -1; |
91eee594 | 868 | |
c0422cea | 869 | line[0] = 0; |
7909e65f | 870 | if (!read_line_old(f_in, line, sizeof line)) |
c0422cea | 871 | return -1; |
3591c066 | 872 | |
c0422cea | 873 | if (!*line || strcmp(line, "#list") == 0) { |
b3e15181 WD |
874 | rprintf(FLOG, "module-list request from %s (%s)\n", |
875 | host, addr); | |
c0422cea WD |
876 | send_listing(f_out); |
877 | return -1; | |
878 | } | |
3591c066 | 879 | |
c0422cea WD |
880 | if (*line == '#') { |
881 | /* it's some sort of command that I don't understand */ | |
882 | io_printf(f_out, "@ERROR: Unknown command '%s'\n", line); | |
883 | return -1; | |
884 | } | |
3591c066 | 885 | |
c0422cea | 886 | if ((i = lp_number(line)) < 0) { |
c0422cea WD |
887 | rprintf(FLOG, "unknown module '%s' tried from %s (%s)\n", |
888 | line, host, addr); | |
889 | io_printf(f_out, "@ERROR: Unknown module '%s'\n", line); | |
890 | return -1; | |
3591c066 AT |
891 | } |
892 | ||
d749eb68 WD |
893 | #ifdef HAVE_SIGACTION |
894 | sigact.sa_flags = SA_NOCLDSTOP; | |
895 | #endif | |
896 | SIGACTION(SIGCHLD, remember_children); | |
897 | ||
439a198d | 898 | return rsync_module(f_in, f_out, i, addr, host); |
3591c066 AT |
899 | } |
900 | ||
dd589118 | 901 | static void create_pid_file(void) |
a1d2685b WD |
902 | { |
903 | char *pid_file = lp_pid_file(); | |
904 | char pidbuf[16]; | |
dd589118 | 905 | pid_t pid = getpid(); |
a1d2685b WD |
906 | int fd; |
907 | ||
908 | if (!pid_file || !*pid_file) | |
909 | return; | |
910 | ||
911 | cleanup_set_pid(pid); | |
dd589118 | 912 | if ((fd = do_open(pid_file, O_WRONLY|O_CREAT|O_EXCL, 0666 & ~orig_umask)) == -1) { |
a1d2685b | 913 | cleanup_set_pid(0); |
dd589118 | 914 | fprintf(stderr, "failed to create pid file %s: %s\n", pid_file, strerror(errno)); |
a1d2685b WD |
915 | rsyserr(FLOG, errno, "failed to create pid file %s", pid_file); |
916 | exit_cleanup(RERR_FILEIO); | |
917 | } | |
918 | snprintf(pidbuf, sizeof pidbuf, "%ld\n", (long)pid); | |
919 | write(fd, pidbuf, strlen(pidbuf)); | |
920 | close(fd); | |
921 | } | |
922 | ||
923 | /* Become a daemon, discarding the controlling terminal. */ | |
924 | static void become_daemon(void) | |
3591c066 | 925 | { |
a1d2685b WD |
926 | int i; |
927 | pid_t pid = fork(); | |
928 | ||
929 | if (pid) { | |
dd589118 WD |
930 | if (pid < 0) { |
931 | fprintf(stderr, "failed to fork: %s\n", strerror(errno)); | |
932 | exit_cleanup(RERR_FILEIO); | |
933 | } | |
a1d2685b WD |
934 | _exit(0); |
935 | } | |
1a016bfd | 936 | |
dd589118 WD |
937 | create_pid_file(); |
938 | ||
a1d2685b WD |
939 | /* detach from the terminal */ |
940 | #ifdef HAVE_SETSID | |
941 | setsid(); | |
942 | #elif defined TIOCNOTTY | |
943 | i = open("/dev/tty", O_RDWR); | |
944 | if (i >= 0) { | |
945 | ioctl(i, (int)TIOCNOTTY, (char *)0); | |
946 | close(i); | |
947 | } | |
948 | #endif | |
949 | /* make sure that stdin, stdout an stderr don't stuff things | |
950 | * up (library functions, for example) */ | |
951 | for (i = 0; i < 3; i++) { | |
952 | close(i); | |
953 | open("/dev/null", O_RDWR); | |
954 | } | |
955 | } | |
956 | ||
957 | int daemon_main(void) | |
958 | { | |
dd589118 WD |
959 | if (!config_file) { |
960 | if (am_server && am_root <= 0) | |
961 | config_file = RSYNCD_USERCONF; | |
962 | else | |
963 | config_file = RSYNCD_SYSCONF; | |
964 | } | |
965 | ||
3591c066 | 966 | if (is_a_socket(STDIN_FILENO)) { |
41979ff8 AT |
967 | int i; |
968 | ||
969 | /* we are running via inetd - close off stdout and | |
4a7144ee WD |
970 | * stderr so that library functions (and getopt) don't |
971 | * try to use them. Redirect them to /dev/null */ | |
2e94e70e | 972 | for (i = 1; i < 3; i++) { |
4a7144ee | 973 | close(i); |
41979ff8 AT |
974 | open("/dev/null", O_RDWR); |
975 | } | |
3eb38818 | 976 | |
68f40ebb | 977 | return start_daemon(STDIN_FILENO, STDIN_FILENO); |
3591c066 AT |
978 | } |
979 | ||
a1d2685b WD |
980 | if (!lp_load(config_file, 1)) { |
981 | fprintf(stderr, "Failed to parse config file: %s\n", config_file); | |
65417579 | 982 | exit_cleanup(RERR_SYNTAX); |
a1d2685b WD |
983 | } |
984 | ||
985 | if (no_detach) | |
dd589118 | 986 | create_pid_file(); |
a1d2685b WD |
987 | else |
988 | become_daemon(); | |
f9e940ef | 989 | |
0c56b1ad WD |
990 | if (rsync_port == 0 && (rsync_port = lp_rsync_port()) == 0) |
991 | rsync_port = RSYNC_PORT; | |
3dfe6e97 | 992 | if (bind_address == NULL && *lp_bind_address()) |
986aaaaa | 993 | bind_address = lp_bind_address(); |
0c56b1ad | 994 | |
6dc9b74b | 995 | log_init(0); |
f9e940ef | 996 | |
9e5a5ddb | 997 | rprintf(FLOG, "rsyncd version %s starting, listening on port %d\n", |
4a7144ee WD |
998 | RSYNC_VERSION, rsync_port); |
999 | /* TODO: If listening on a particular address, then show that | |
1000 | * address too. In fact, why not just do inet_ntop on the | |
1001 | * local address??? */ | |
e42c9458 | 1002 | |
8ef4ffd6 AT |
1003 | start_accept_loop(rsync_port, start_daemon); |
1004 | return -1; | |
3591c066 | 1005 | } |