Commit | Line | Data |
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a039749b | 1 | /* -*- c-file-style: "linux"; -*- |
a254fd97 MP |
2 | * |
3 | * Copyright (C) 1998-2001 by Andrew Tridgell <tridge@samba.org> | |
4 | * Copyright (C) 2001-2002 by Martin Pool <mbp@samba.org> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, write to the Free Software | |
18 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
19 | */ | |
3591c066 | 20 | |
a254fd97 MP |
21 | /** |
22 | * @file | |
23 | * | |
24 | * The socket based protocol for setting up a connection with | |
25 | * rsyncd. | |
26 | **/ | |
3591c066 AT |
27 | |
28 | #include "rsync.h" | |
29 | ||
30 | extern int module_id; | |
31 | extern int read_only; | |
32 | extern int verbose; | |
33 | extern int rsync_port; | |
97cb8dc2 | 34 | char *auth_user; |
b35d0d8e | 35 | extern int sanitize_paths; |
3591c066 | 36 | |
be2961da | 37 | /** |
bc363ea9 | 38 | * Run a client connected to an rsyncd. The alternative to this |
be2961da MP |
39 | * function for remote-shell connections is do_cmd(). |
40 | * | |
41 | * After initial server startup, hands over to client_run(). | |
42 | * | |
43 | * @return -1 for error in startup, or the result of client_run(). | |
44 | **/ | |
3591c066 AT |
45 | int start_socket_client(char *host, char *path, int argc, char *argv[]) |
46 | { | |
47 | int fd, i; | |
48 | char *sargs[MAX_ARGS]; | |
49 | int sargc=0; | |
e42c9458 | 50 | char line[MAXPATHLEN]; |
bcb7e502 | 51 | char *p, *user=NULL; |
13c5fc0e | 52 | extern int remote_version; |
8d9dc9f9 | 53 | extern int am_sender; |
bc363ea9 | 54 | extern char *shell_cmd; |
9098bbf3 | 55 | extern int list_only; |
7a55d06e | 56 | extern int kludge_around_eof; |
06963d0f | 57 | extern char *bind_address; |
13e29995 | 58 | extern int default_af_hint; |
06963d0f | 59 | |
27e3e9c9 AT |
60 | if (argc == 0 && !am_sender) { |
61 | extern int list_only; | |
62 | list_only = 1; | |
63 | } | |
64 | ||
bc363ea9 MP |
65 | /* This is just a friendliness enhancement: if the connection |
66 | * is to an rsyncd then there is no point specifying the -e option. | |
67 | * Note that this is only set if the -e was explicitly specified, | |
68 | * not if the environment variable just happens to be set. | |
69 | * See http://lists.samba.org/pipermail/rsync/2000-September/002744.html | |
70 | */ | |
71 | if (shell_cmd) { | |
72 | rprintf(FERROR, "WARNING: --rsh or -e option ignored when " | |
73 | "connecting to rsync daemon\n"); | |
74 | /* continue */ | |
75 | } | |
76 | ||
f98df1d9 | 77 | if (*path == '/') { |
ff81e809 | 78 | rprintf(FERROR,"ERROR: The remote path must start with a module name not a /\n"); |
f98df1d9 AT |
79 | return -1; |
80 | } | |
81 | ||
bcb7e502 AT |
82 | p = strchr(host, '@'); |
83 | if (p) { | |
84 | user = host; | |
85 | host = p+1; | |
86 | *p = 0; | |
87 | } | |
88 | ||
89 | if (!user) user = getenv("USER"); | |
90 | if (!user) user = getenv("LOGNAME"); | |
91 | ||
1bbd10fe | 92 | if (verbose >= 2) { |
604f343c MP |
93 | /* FIXME: If we're going to use a socket program for |
94 | * testing, then this message is wrong. We need to | |
95 | * say something like "(except really using %s)" */ | |
1264288c MP |
96 | rprintf(FINFO, "opening tcp connection to %s port %d\n", |
97 | host, rsync_port); | |
1bbd10fe | 98 | } |
d5d4b282 | 99 | fd = open_socket_out_wrapped (host, rsync_port, bind_address, |
13e29995 | 100 | default_af_hint); |
3591c066 | 101 | if (fd == -1) { |
65417579 | 102 | exit_cleanup(RERR_SOCKETIO); |
3591c066 AT |
103 | } |
104 | ||
105 | server_options(sargs,&sargc); | |
106 | ||
107 | sargs[sargc++] = "."; | |
108 | ||
109 | if (path && *path) | |
110 | sargs[sargc++] = path; | |
111 | ||
112 | sargs[sargc] = NULL; | |
113 | ||
91eee594 AT |
114 | io_printf(fd,"@RSYNCD: %d\n", PROTOCOL_VERSION); |
115 | ||
3591c066 | 116 | if (!read_line(fd, line, sizeof(line)-1)) { |
be2961da | 117 | rprintf(FERROR, "rsync: did not see server greeting\n"); |
3591c066 AT |
118 | return -1; |
119 | } | |
120 | ||
13c5fc0e | 121 | if (sscanf(line,"@RSYNCD: %d", &remote_version) != 1) { |
be2961da MP |
122 | /* note that read_line strips of \n or \r */ |
123 | rprintf(FERROR, "rsync: server sent \"%s\" rather than greeting\n", | |
124 | line); | |
3591c066 AT |
125 | return -1; |
126 | } | |
127 | ||
2c91d3d3 AT |
128 | p = strchr(path,'/'); |
129 | if (p) *p = 0; | |
130 | io_printf(fd,"%s\n",path); | |
131 | if (p) *p = '/'; | |
132 | ||
063393d6 MP |
133 | /* Old servers may just drop the connection here, |
134 | rather than sending a proper EXIT command. Yuck. */ | |
9098bbf3 | 135 | kludge_around_eof = list_only && (remote_version < 25); |
7a55d06e | 136 | |
063393d6 | 137 | while (1) { |
3591c066 | 138 | if (!read_line(fd, line, sizeof(line)-1)) { |
be2961da | 139 | rprintf(FERROR, "rsync: didn't get server startup line\n"); |
3591c066 AT |
140 | return -1; |
141 | } | |
31593dd6 | 142 | |
31593dd6 | 143 | if (strncmp(line,"@RSYNCD: AUTHREQD ",18) == 0) { |
bcb7e502 | 144 | auth_client(fd, user, line+18); |
31593dd6 AT |
145 | continue; |
146 | } | |
31593dd6 | 147 | |
3591c066 | 148 | if (strcmp(line,"@RSYNCD: OK") == 0) break; |
8f04bb36 | 149 | |
cae95647 MP |
150 | if (strcmp(line,"@RSYNCD: EXIT") == 0) { |
151 | /* This is sent by recent versions of the | |
152 | * server to terminate the listing of modules. | |
153 | * We don't want to go on and transfer | |
154 | * anything; just exit. */ | |
155 | exit(0); | |
156 | } | |
8f04bb36 | 157 | |
c613d370 DD |
158 | if (strncmp(line, "@ERROR", 6) == 0) |
159 | rprintf(FERROR,"%s\n", line); | |
160 | else | |
161 | rprintf(FINFO,"%s\n", line); | |
3591c066 | 162 | } |
7a55d06e | 163 | kludge_around_eof = False; |
3591c066 AT |
164 | |
165 | for (i=0;i<sargc;i++) { | |
166 | io_printf(fd,"%s\n", sargs[i]); | |
167 | } | |
168 | io_printf(fd,"\n"); | |
169 | ||
09b7f5db AT |
170 | if (remote_version < 23) { |
171 | if (remote_version == 22 || (remote_version > 17 && !am_sender)) | |
172 | io_start_multiplex_in(fd); | |
173 | } | |
8d9dc9f9 | 174 | |
3591c066 AT |
175 | return client_run(fd, fd, -1, argc, argv); |
176 | } | |
177 | ||
178 | ||
179 | ||
180 | static int rsync_module(int fd, int i) | |
181 | { | |
182 | int argc=0; | |
183 | char *argv[MAX_ARGS]; | |
184 | char **argp; | |
e42c9458 | 185 | char line[MAXPATHLEN]; |
2af27ad9 | 186 | uid_t uid = (uid_t)-2; /* canonically "nobody" */ |
1a016bfd | 187 | gid_t gid = (gid_t)-2; |
8ef4ffd6 | 188 | char *p; |
56c473b7 AT |
189 | char *addr = client_addr(fd); |
190 | char *host = client_name(fd); | |
874895d5 | 191 | char *name = lp_name(i); |
8638dd48 | 192 | int use_chroot = lp_use_chroot(i); |
874895d5 | 193 | int start_glob=0; |
41979ff8 | 194 | int ret; |
7b372642 AT |
195 | char *request=NULL; |
196 | extern int am_sender; | |
8d9dc9f9 | 197 | extern int remote_version; |
943882a2 | 198 | extern int am_root; |
56c473b7 AT |
199 | |
200 | if (!allow_access(addr, host, lp_hosts_allow(i), lp_hosts_deny(i))) { | |
201 | rprintf(FERROR,"rsync denied on module %s from %s (%s)\n", | |
31ec50d7 | 202 | name, host, addr); |
c8e78d87 | 203 | io_printf(fd,"@ERROR: access denied to %s from %s (%s)\n", |
31ec50d7 | 204 | name, host, addr); |
56c473b7 AT |
205 | return -1; |
206 | } | |
3591c066 | 207 | |
5e71c444 | 208 | if (!claim_connection(lp_lock_file(i), lp_max_connections(i))) { |
8d72ef6e AT |
209 | if (errno) { |
210 | rprintf(FERROR,"failed to open lock file %s : %s\n", | |
5e71c444 | 211 | lp_lock_file(i), strerror(errno)); |
8d72ef6e | 212 | io_printf(fd,"@ERROR: failed to open lock file %s : %s\n", |
5e71c444 | 213 | lp_lock_file(i), strerror(errno)); |
8d72ef6e AT |
214 | } else { |
215 | rprintf(FERROR,"max connections (%d) reached\n", | |
5e71c444 AT |
216 | lp_max_connections(i)); |
217 | io_printf(fd,"@ERROR: max connections (%d) reached - try again later\n", lp_max_connections(i)); | |
8d72ef6e | 218 | } |
0c515f17 AT |
219 | return -1; |
220 | } | |
221 | ||
31593dd6 | 222 | |
97cb8dc2 | 223 | auth_user = auth_server(fd, i, addr, "@RSYNCD: AUTHREQD "); |
d0d56395 | 224 | |
97cb8dc2 | 225 | if (!auth_user) { |
d0d56395 AT |
226 | rprintf(FERROR,"auth failed on module %s from %s (%s)\n", |
227 | name, client_name(fd), client_addr(fd)); | |
228 | io_printf(fd,"@ERROR: auth failed on module %s\n",name); | |
229 | return -1; | |
230 | } | |
231 | ||
3591c066 AT |
232 | module_id = i; |
233 | ||
716baed7 | 234 | am_root = (getuid() == 0); |
8ef4ffd6 | 235 | |
716baed7 DD |
236 | if (am_root) { |
237 | p = lp_uid(i); | |
238 | if (!name_to_uid(p, &uid)) { | |
239 | if (!isdigit(*p)) { | |
240 | rprintf(FERROR,"Invalid uid %s\n", p); | |
fd2dd2aa | 241 | io_printf(fd,"@ERROR: invalid uid %s\n", p); |
716baed7 DD |
242 | return -1; |
243 | } | |
244 | uid = atoi(p); | |
245 | } | |
246 | ||
247 | p = lp_gid(i); | |
248 | if (!name_to_gid(p, &gid)) { | |
249 | if (!isdigit(*p)) { | |
250 | rprintf(FERROR,"Invalid gid %s\n", p); | |
fd2dd2aa | 251 | io_printf(fd,"@ERROR: invalid gid %s\n", p); |
716baed7 DD |
252 | return -1; |
253 | } | |
254 | gid = atoi(p); | |
255 | } | |
8ef4ffd6 | 256 | } |
3b2b5345 MP |
257 | |
258 | /* TODO: If we're not root, but the configuration requests | |
259 | * that we change to some uid other than the current one, then | |
260 | * log a warning. */ | |
261 | ||
262 | /* TODO: Perhaps take a list of gids, and make them into the | |
263 | * supplementary groups. */ | |
8ef4ffd6 | 264 | |
cd64343a DD |
265 | p = lp_include_from(i); |
266 | add_exclude_file(p, 1, 1); | |
267 | ||
268 | p = lp_include(i); | |
269 | add_include_line(p); | |
270 | ||
8f3a2d54 | 271 | p = lp_exclude_from(i); |
2b6b4d53 | 272 | add_exclude_file(p, 1, 0); |
8f3a2d54 | 273 | |
5805327b | 274 | p = lp_exclude(i); |
8f3a2d54 AT |
275 | add_exclude_line(p); |
276 | ||
45a83540 | 277 | log_init(); |
1a016bfd | 278 | |
8638dd48 | 279 | if (use_chroot) { |
b52c1d9d MP |
280 | /* |
281 | * XXX: The 'use chroot' flag is a fairly reliable | |
282 | * source of confusion, because it fails under two | |
283 | * important circumstances: running as non-root, | |
284 | * running on Win32 (or possibly others). On the | |
285 | * other hand, if you are running as root, then it | |
286 | * might be better to always use chroot. | |
287 | * | |
288 | * So, perhaps if we can't chroot we should just issue | |
289 | * a warning, unless a "require chroot" flag is set, | |
290 | * in which case we fail. | |
291 | */ | |
8638dd48 | 292 | if (chroot(lp_path(i))) { |
a039749b | 293 | rsyserr(FERROR, errno, "chroot %s failed", lp_path(i)); |
8638dd48 DD |
294 | io_printf(fd,"@ERROR: chroot failed\n"); |
295 | return -1; | |
296 | } | |
3591c066 | 297 | |
c226b7c2 | 298 | if (!push_dir("/", 0)) { |
a039749b | 299 | rsyserr(FERROR, errno, "chdir %s failed\n", lp_path(i)); |
8638dd48 DD |
300 | io_printf(fd,"@ERROR: chdir failed\n"); |
301 | return -1; | |
302 | } | |
3591c066 | 303 | |
716baed7 DD |
304 | } else { |
305 | if (!push_dir(lp_path(i), 0)) { | |
a039749b | 306 | rsyserr(FERROR, errno, "chdir %s failed\n", lp_path(i)); |
716baed7 DD |
307 | io_printf(fd,"@ERROR: chdir failed\n"); |
308 | return -1; | |
309 | } | |
cb13abfe | 310 | sanitize_paths = 1; |
716baed7 DD |
311 | } |
312 | ||
313 | if (am_root) { | |
e3bdb763 | 314 | #ifdef HAVE_SETGROUPS |
715d1f45 MP |
315 | /* Get rid of any supplementary groups this process |
316 | * might have inheristed. */ | |
317 | if (setgroups(0, NULL)) { | |
318 | rsyserr(FERROR, errno, "setgroups failed"); | |
319 | io_printf(fd, "@ERROR: setgroups failed\n"); | |
320 | return -1; | |
321 | } | |
e3bdb763 | 322 | #endif |
715d1f45 MP |
323 | |
324 | /* XXXX: You could argue that if the daemon is started | |
325 | * by a non-root user and they explicitly specify a | |
326 | * gid, then we should try to change to that gid -- | |
327 | * this could be possible if it's already in their | |
328 | * supplementary groups. */ | |
329 | ||
330 | /* TODO: Perhaps we need to document that if rsyncd is | |
331 | * started by somebody other than root it will inherit | |
332 | * all their supplementary groups. */ | |
333 | ||
716baed7 | 334 | if (setgid(gid)) { |
08a740ff | 335 | rsyserr(FERROR, errno, "setgid %d failed", (int) gid); |
8638dd48 DD |
336 | io_printf(fd,"@ERROR: setgid failed\n"); |
337 | return -1; | |
338 | } | |
3591c066 | 339 | |
716baed7 | 340 | if (setuid(uid)) { |
08a740ff | 341 | rsyserr(FERROR, errno, "setuid %d failed", (int) uid); |
8638dd48 DD |
342 | io_printf(fd,"@ERROR: setuid failed\n"); |
343 | return -1; | |
344 | } | |
345 | ||
716baed7 | 346 | am_root = (getuid() == 0); |
3591c066 AT |
347 | } |
348 | ||
349 | io_printf(fd,"@RSYNCD: OK\n"); | |
350 | ||
351 | argv[argc++] = "rsyncd"; | |
352 | ||
353 | while (1) { | |
354 | if (!read_line(fd, line, sizeof(line)-1)) { | |
355 | return -1; | |
356 | } | |
357 | ||
358 | if (!*line) break; | |
359 | ||
874895d5 AT |
360 | p = line; |
361 | ||
874895d5 | 362 | argv[argc] = strdup(p); |
3591c066 AT |
363 | if (!argv[argc]) { |
364 | return -1; | |
365 | } | |
366 | ||
874895d5 | 367 | if (start_glob) { |
1a016bfd | 368 | if (start_glob == 1) { |
7b372642 | 369 | request = strdup(p); |
1a016bfd AT |
370 | start_glob++; |
371 | } | |
cb13abfe | 372 | glob_expand(name, argv, &argc, MAX_ARGS); |
874895d5 AT |
373 | } else { |
374 | argc++; | |
375 | } | |
376 | ||
377 | if (strcmp(line,".") == 0) { | |
378 | start_glob = 1; | |
379 | } | |
380 | ||
3591c066 AT |
381 | if (argc == MAX_ARGS) { |
382 | return -1; | |
383 | } | |
384 | } | |
385 | ||
cb13abfe | 386 | if (sanitize_paths) { |
8638dd48 DD |
387 | /* |
388 | * Note that this is applied to all parameters, whether or not | |
389 | * they are filenames, but no other legal parameters contain | |
390 | * the forms that need to be sanitized so it doesn't hurt; | |
391 | * it is not known at this point which parameters are files | |
392 | * and which aren't. | |
393 | */ | |
394 | for (i = 1; i < argc; i++) { | |
cb13abfe | 395 | sanitize_path(argv[i], NULL); |
8638dd48 DD |
396 | } |
397 | } | |
398 | ||
15b7b73d MP |
399 | argp = argv; |
400 | ret = parse_arguments(&argc, (const char ***) &argp, 0); | |
3591c066 | 401 | |
7b372642 | 402 | if (request) { |
97cb8dc2 | 403 | if (*auth_user) { |
d0d56395 AT |
404 | rprintf(FINFO,"rsync %s %s from %s@%s (%s)\n", |
405 | am_sender?"on":"to", | |
97cb8dc2 | 406 | request, auth_user, host, addr); |
d0d56395 AT |
407 | } else { |
408 | rprintf(FINFO,"rsync %s %s from %s (%s)\n", | |
409 | am_sender?"on":"to", | |
410 | request, host, addr); | |
411 | } | |
7b372642 AT |
412 | free(request); |
413 | } | |
414 | ||
15b7b73d | 415 | #ifndef DEBUG |
3591c066 AT |
416 | /* don't allow the logs to be flooded too fast */ |
417 | if (verbose > 1) verbose = 1; | |
0199b05f | 418 | #endif |
3591c066 | 419 | |
09b7f5db AT |
420 | if (remote_version < 23) { |
421 | if (remote_version == 22 || (remote_version > 17 && am_sender)) | |
422 | io_start_multiplex_out(fd); | |
554e0a8d | 423 | } |
15b7b73d MP |
424 | |
425 | /* For later protocol versions, we don't start multiplexing | |
426 | * until we've configured nonblocking in start_server. That | |
427 | * means we're in a sticky situation now: there's no way to | |
428 | * convey errors to the client. */ | |
429 | ||
430 | /* FIXME: Hold off on reporting option processing errors until | |
431 | * we've set up nonblocking and multiplexed IO and can get the | |
432 | * message back to them. */ | |
41979ff8 | 433 | if (!ret) { |
15b7b73d MP |
434 | option_error(); |
435 | exit_cleanup(RERR_UNSUPPORTED); | |
41979ff8 AT |
436 | } |
437 | ||
81791cfc AT |
438 | if (lp_timeout(i)) { |
439 | extern int io_timeout; | |
440 | io_timeout = lp_timeout(i); | |
441 | } | |
442 | ||
3591c066 AT |
443 | start_server(fd, fd, argc, argp); |
444 | ||
445 | return 0; | |
446 | } | |
447 | ||
7a6421fa AT |
448 | /* send a list of available modules to the client. Don't list those |
449 | with "list = False". */ | |
3591c066 AT |
450 | static void send_listing(int fd) |
451 | { | |
452 | int n = lp_numservices(); | |
453 | int i; | |
063393d6 MP |
454 | extern int remote_version; |
455 | ||
3591c066 AT |
456 | for (i=0;i<n;i++) |
457 | if (lp_list(i)) | |
458 | io_printf(fd, "%-15s\t%s\n", lp_name(i), lp_comment(i)); | |
8f04bb36 | 459 | |
063393d6 MP |
460 | if (remote_version >= 25) |
461 | io_printf(fd,"@RSYNCD: EXIT\n"); | |
3591c066 AT |
462 | } |
463 | ||
464 | /* this is called when a socket connection is established to a client | |
465 | and we want to start talking. The setup of the system is done from | |
466 | here */ | |
467 | static int start_daemon(int fd) | |
468 | { | |
7a6421fa | 469 | char line[200]; |
3591c066 | 470 | char *motd; |
8ef4ffd6 | 471 | int i = -1; |
4cdf25e4 | 472 | extern char *config_file; |
13c5fc0e | 473 | extern int remote_version; |
4cdf25e4 | 474 | |
f9e940ef | 475 | if (!lp_load(config_file, 0)) { |
65417579 | 476 | exit_cleanup(RERR_SYNTAX); |
4cdf25e4 | 477 | } |
3591c066 AT |
478 | |
479 | set_socket_options(fd,"SO_KEEPALIVE"); | |
a6801c39 | 480 | set_socket_options(fd,lp_socket_options()); |
f0359dd0 | 481 | set_nonblocking(fd); |
3591c066 AT |
482 | |
483 | io_printf(fd,"@RSYNCD: %d\n", PROTOCOL_VERSION); | |
484 | ||
485 | motd = lp_motd_file(); | |
27d3cdbc | 486 | if (motd && *motd) { |
3591c066 AT |
487 | FILE *f = fopen(motd,"r"); |
488 | while (f && !feof(f)) { | |
489 | int len = fread(line, 1, sizeof(line)-1, f); | |
490 | if (len > 0) { | |
491 | line[len] = 0; | |
492 | io_printf(fd,"%s", line); | |
493 | } | |
494 | } | |
495 | if (f) fclose(f); | |
496 | io_printf(fd,"\n"); | |
497 | } | |
498 | ||
91eee594 AT |
499 | if (!read_line(fd, line, sizeof(line)-1)) { |
500 | return -1; | |
501 | } | |
502 | ||
503 | if (sscanf(line,"@RSYNCD: %d", &remote_version) != 1) { | |
c8e78d87 | 504 | io_printf(fd,"@ERROR: protocol startup error\n"); |
91eee594 AT |
505 | return -1; |
506 | } | |
507 | ||
8ef4ffd6 | 508 | while (i == -1) { |
3591c066 AT |
509 | line[0] = 0; |
510 | if (!read_line(fd, line, sizeof(line)-1)) { | |
511 | return -1; | |
512 | } | |
513 | ||
514 | if (!*line || strcmp(line,"#list")==0) { | |
515 | send_listing(fd); | |
516 | return -1; | |
517 | } | |
518 | ||
519 | if (*line == '#') { | |
520 | /* it's some sort of command that I don't understand */ | |
c8e78d87 | 521 | io_printf(fd,"@ERROR: Unknown command '%s'\n", line); |
3591c066 AT |
522 | return -1; |
523 | } | |
524 | ||
525 | i = lp_number(line); | |
526 | if (i == -1) { | |
c8e78d87 | 527 | io_printf(fd,"@ERROR: Unknown module '%s'\n", line); |
3591c066 AT |
528 | return -1; |
529 | } | |
3591c066 AT |
530 | } |
531 | ||
8ef4ffd6 | 532 | return rsync_module(fd, i); |
3591c066 AT |
533 | } |
534 | ||
535 | ||
536 | int daemon_main(void) | |
537 | { | |
f9e940ef | 538 | extern char *config_file; |
ad517ce5 | 539 | extern int orig_umask; |
8638dd48 | 540 | char *pid_file; |
13e29995 | 541 | extern int no_detach; |
1a016bfd | 542 | |
3591c066 | 543 | if (is_a_socket(STDIN_FILENO)) { |
41979ff8 AT |
544 | int i; |
545 | ||
546 | /* we are running via inetd - close off stdout and | |
547 | stderr so that library functions (and getopt) don't | |
548 | try to use them. Redirect them to /dev/null */ | |
549 | for (i=1;i<3;i++) { | |
550 | close(i); | |
551 | open("/dev/null", O_RDWR); | |
552 | } | |
3eb38818 | 553 | |
3591c066 AT |
554 | return start_daemon(STDIN_FILENO); |
555 | } | |
556 | ||
13e29995 | 557 | if (!no_detach) |
a538066d | 558 | become_daemon(); |
3591c066 | 559 | |
f9e940ef | 560 | if (!lp_load(config_file, 1)) { |
65417579 | 561 | exit_cleanup(RERR_SYNTAX); |
f9e940ef AT |
562 | } |
563 | ||
45a83540 | 564 | log_init(); |
f9e940ef | 565 | |
a358449a MP |
566 | rprintf(FINFO, "rsyncd version %s starting, listening on port %d\n", |
567 | RSYNC_VERSION, | |
15b7b73d MP |
568 | rsync_port); |
569 | /* TODO: If listening on a particular address, then show that | |
431efc89 MP |
570 | * address too. In fact, why not just do inet_ntop on the |
571 | * local address??? */ | |
e42c9458 | 572 | |
8638dd48 | 573 | if (((pid_file = lp_pid_file()) != NULL) && (*pid_file != '\0')) { |
ad517ce5 DD |
574 | char pidbuf[16]; |
575 | int fd; | |
8638dd48 DD |
576 | int pid = (int) getpid(); |
577 | cleanup_set_pid(pid); | |
ad517ce5 DD |
578 | if ((fd = do_open(lp_pid_file(), O_WRONLY|O_CREAT|O_TRUNC, |
579 | 0666 & ~orig_umask)) == -1) { | |
8638dd48 | 580 | cleanup_set_pid(0); |
a039749b | 581 | rsyserr(FLOG, errno, "failed to create pid file %s", pid_file); |
65417579 | 582 | exit_cleanup(RERR_FILEIO); |
8638dd48 | 583 | } |
8950ac03 | 584 | snprintf(pidbuf, sizeof(pidbuf), "%d\n", pid); |
ad517ce5 DD |
585 | write(fd, pidbuf, strlen(pidbuf)); |
586 | close(fd); | |
8638dd48 DD |
587 | } |
588 | ||
8ef4ffd6 AT |
589 | start_accept_loop(rsync_port, start_daemon); |
590 | return -1; | |
3591c066 AT |
591 | } |
592 |