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 AT |
149 | |
150 | if (strcmp(line,"@RSYNCD: EXIT") == 0) exit(0); | |
151 | ||
c613d370 DD |
152 | if (strncmp(line, "@ERROR", 6) == 0) |
153 | rprintf(FERROR,"%s\n", line); | |
154 | else | |
155 | rprintf(FINFO,"%s\n", line); | |
3591c066 | 156 | } |
7a55d06e | 157 | kludge_around_eof = False; |
3591c066 AT |
158 | |
159 | for (i=0;i<sargc;i++) { | |
160 | io_printf(fd,"%s\n", sargs[i]); | |
161 | } | |
162 | io_printf(fd,"\n"); | |
163 | ||
09b7f5db AT |
164 | if (remote_version < 23) { |
165 | if (remote_version == 22 || (remote_version > 17 && !am_sender)) | |
166 | io_start_multiplex_in(fd); | |
167 | } | |
8d9dc9f9 | 168 | |
3591c066 AT |
169 | return client_run(fd, fd, -1, argc, argv); |
170 | } | |
171 | ||
172 | ||
173 | ||
174 | static int rsync_module(int fd, int i) | |
175 | { | |
176 | int argc=0; | |
177 | char *argv[MAX_ARGS]; | |
178 | char **argp; | |
e42c9458 | 179 | char line[MAXPATHLEN]; |
2af27ad9 | 180 | uid_t uid = (uid_t)-2; /* canonically "nobody" */ |
1a016bfd | 181 | gid_t gid = (gid_t)-2; |
8ef4ffd6 | 182 | char *p; |
56c473b7 AT |
183 | char *addr = client_addr(fd); |
184 | char *host = client_name(fd); | |
874895d5 | 185 | char *name = lp_name(i); |
8638dd48 | 186 | int use_chroot = lp_use_chroot(i); |
874895d5 | 187 | int start_glob=0; |
41979ff8 | 188 | int ret; |
7b372642 AT |
189 | char *request=NULL; |
190 | extern int am_sender; | |
8d9dc9f9 | 191 | extern int remote_version; |
943882a2 | 192 | extern int am_root; |
56c473b7 AT |
193 | |
194 | if (!allow_access(addr, host, lp_hosts_allow(i), lp_hosts_deny(i))) { | |
195 | rprintf(FERROR,"rsync denied on module %s from %s (%s)\n", | |
31ec50d7 | 196 | name, host, addr); |
c8e78d87 | 197 | io_printf(fd,"@ERROR: access denied to %s from %s (%s)\n", |
31ec50d7 | 198 | name, host, addr); |
56c473b7 AT |
199 | return -1; |
200 | } | |
3591c066 | 201 | |
5e71c444 | 202 | if (!claim_connection(lp_lock_file(i), lp_max_connections(i))) { |
8d72ef6e AT |
203 | if (errno) { |
204 | rprintf(FERROR,"failed to open lock file %s : %s\n", | |
5e71c444 | 205 | lp_lock_file(i), strerror(errno)); |
8d72ef6e | 206 | io_printf(fd,"@ERROR: failed to open lock file %s : %s\n", |
5e71c444 | 207 | lp_lock_file(i), strerror(errno)); |
8d72ef6e AT |
208 | } else { |
209 | rprintf(FERROR,"max connections (%d) reached\n", | |
5e71c444 AT |
210 | lp_max_connections(i)); |
211 | io_printf(fd,"@ERROR: max connections (%d) reached - try again later\n", lp_max_connections(i)); | |
8d72ef6e | 212 | } |
0c515f17 AT |
213 | return -1; |
214 | } | |
215 | ||
31593dd6 | 216 | |
97cb8dc2 | 217 | auth_user = auth_server(fd, i, addr, "@RSYNCD: AUTHREQD "); |
d0d56395 | 218 | |
97cb8dc2 | 219 | if (!auth_user) { |
d0d56395 AT |
220 | rprintf(FERROR,"auth failed on module %s from %s (%s)\n", |
221 | name, client_name(fd), client_addr(fd)); | |
222 | io_printf(fd,"@ERROR: auth failed on module %s\n",name); | |
223 | return -1; | |
224 | } | |
225 | ||
3591c066 AT |
226 | module_id = i; |
227 | ||
716baed7 | 228 | am_root = (getuid() == 0); |
8ef4ffd6 | 229 | |
716baed7 DD |
230 | if (am_root) { |
231 | p = lp_uid(i); | |
232 | if (!name_to_uid(p, &uid)) { | |
233 | if (!isdigit(*p)) { | |
234 | rprintf(FERROR,"Invalid uid %s\n", p); | |
fd2dd2aa | 235 | io_printf(fd,"@ERROR: invalid uid %s\n", p); |
716baed7 DD |
236 | return -1; |
237 | } | |
238 | uid = atoi(p); | |
239 | } | |
240 | ||
241 | p = lp_gid(i); | |
242 | if (!name_to_gid(p, &gid)) { | |
243 | if (!isdigit(*p)) { | |
244 | rprintf(FERROR,"Invalid gid %s\n", p); | |
fd2dd2aa | 245 | io_printf(fd,"@ERROR: invalid gid %s\n", p); |
716baed7 DD |
246 | return -1; |
247 | } | |
248 | gid = atoi(p); | |
249 | } | |
8ef4ffd6 | 250 | } |
3b2b5345 MP |
251 | |
252 | /* TODO: If we're not root, but the configuration requests | |
253 | * that we change to some uid other than the current one, then | |
254 | * log a warning. */ | |
255 | ||
256 | /* TODO: Perhaps take a list of gids, and make them into the | |
257 | * supplementary groups. */ | |
8ef4ffd6 | 258 | |
cd64343a DD |
259 | p = lp_include_from(i); |
260 | add_exclude_file(p, 1, 1); | |
261 | ||
262 | p = lp_include(i); | |
263 | add_include_line(p); | |
264 | ||
8f3a2d54 | 265 | p = lp_exclude_from(i); |
2b6b4d53 | 266 | add_exclude_file(p, 1, 0); |
8f3a2d54 | 267 | |
5805327b | 268 | p = lp_exclude(i); |
8f3a2d54 AT |
269 | add_exclude_line(p); |
270 | ||
45a83540 | 271 | log_init(); |
1a016bfd | 272 | |
8638dd48 | 273 | if (use_chroot) { |
b52c1d9d MP |
274 | /* |
275 | * XXX: The 'use chroot' flag is a fairly reliable | |
276 | * source of confusion, because it fails under two | |
277 | * important circumstances: running as non-root, | |
278 | * running on Win32 (or possibly others). On the | |
279 | * other hand, if you are running as root, then it | |
280 | * might be better to always use chroot. | |
281 | * | |
282 | * So, perhaps if we can't chroot we should just issue | |
283 | * a warning, unless a "require chroot" flag is set, | |
284 | * in which case we fail. | |
285 | */ | |
8638dd48 | 286 | if (chroot(lp_path(i))) { |
a039749b | 287 | rsyserr(FERROR, errno, "chroot %s failed", lp_path(i)); |
8638dd48 DD |
288 | io_printf(fd,"@ERROR: chroot failed\n"); |
289 | return -1; | |
290 | } | |
3591c066 | 291 | |
c226b7c2 | 292 | if (!push_dir("/", 0)) { |
a039749b | 293 | rsyserr(FERROR, errno, "chdir %s failed\n", lp_path(i)); |
8638dd48 DD |
294 | io_printf(fd,"@ERROR: chdir failed\n"); |
295 | return -1; | |
296 | } | |
3591c066 | 297 | |
716baed7 DD |
298 | } else { |
299 | if (!push_dir(lp_path(i), 0)) { | |
a039749b | 300 | rsyserr(FERROR, errno, "chdir %s failed\n", lp_path(i)); |
716baed7 DD |
301 | io_printf(fd,"@ERROR: chdir failed\n"); |
302 | return -1; | |
303 | } | |
cb13abfe | 304 | sanitize_paths = 1; |
716baed7 DD |
305 | } |
306 | ||
307 | if (am_root) { | |
e3bdb763 | 308 | #ifdef HAVE_SETGROUPS |
715d1f45 MP |
309 | /* Get rid of any supplementary groups this process |
310 | * might have inheristed. */ | |
311 | if (setgroups(0, NULL)) { | |
312 | rsyserr(FERROR, errno, "setgroups failed"); | |
313 | io_printf(fd, "@ERROR: setgroups failed\n"); | |
314 | return -1; | |
315 | } | |
e3bdb763 | 316 | #endif |
715d1f45 MP |
317 | |
318 | /* XXXX: You could argue that if the daemon is started | |
319 | * by a non-root user and they explicitly specify a | |
320 | * gid, then we should try to change to that gid -- | |
321 | * this could be possible if it's already in their | |
322 | * supplementary groups. */ | |
323 | ||
324 | /* TODO: Perhaps we need to document that if rsyncd is | |
325 | * started by somebody other than root it will inherit | |
326 | * all their supplementary groups. */ | |
327 | ||
716baed7 | 328 | if (setgid(gid)) { |
08a740ff | 329 | rsyserr(FERROR, errno, "setgid %d failed", (int) gid); |
8638dd48 DD |
330 | io_printf(fd,"@ERROR: setgid failed\n"); |
331 | return -1; | |
332 | } | |
3591c066 | 333 | |
716baed7 | 334 | if (setuid(uid)) { |
08a740ff | 335 | rsyserr(FERROR, errno, "setuid %d failed", (int) uid); |
8638dd48 DD |
336 | io_printf(fd,"@ERROR: setuid failed\n"); |
337 | return -1; | |
338 | } | |
339 | ||
716baed7 | 340 | am_root = (getuid() == 0); |
3591c066 AT |
341 | } |
342 | ||
343 | io_printf(fd,"@RSYNCD: OK\n"); | |
344 | ||
345 | argv[argc++] = "rsyncd"; | |
346 | ||
347 | while (1) { | |
348 | if (!read_line(fd, line, sizeof(line)-1)) { | |
349 | return -1; | |
350 | } | |
351 | ||
352 | if (!*line) break; | |
353 | ||
874895d5 AT |
354 | p = line; |
355 | ||
874895d5 | 356 | argv[argc] = strdup(p); |
3591c066 AT |
357 | if (!argv[argc]) { |
358 | return -1; | |
359 | } | |
360 | ||
874895d5 | 361 | if (start_glob) { |
1a016bfd | 362 | if (start_glob == 1) { |
7b372642 | 363 | request = strdup(p); |
1a016bfd AT |
364 | start_glob++; |
365 | } | |
cb13abfe | 366 | glob_expand(name, argv, &argc, MAX_ARGS); |
874895d5 AT |
367 | } else { |
368 | argc++; | |
369 | } | |
370 | ||
371 | if (strcmp(line,".") == 0) { | |
372 | start_glob = 1; | |
373 | } | |
374 | ||
3591c066 AT |
375 | if (argc == MAX_ARGS) { |
376 | return -1; | |
377 | } | |
378 | } | |
379 | ||
cb13abfe | 380 | if (sanitize_paths) { |
8638dd48 DD |
381 | /* |
382 | * Note that this is applied to all parameters, whether or not | |
383 | * they are filenames, but no other legal parameters contain | |
384 | * the forms that need to be sanitized so it doesn't hurt; | |
385 | * it is not known at this point which parameters are files | |
386 | * and which aren't. | |
387 | */ | |
388 | for (i = 1; i < argc; i++) { | |
cb13abfe | 389 | sanitize_path(argv[i], NULL); |
8638dd48 DD |
390 | } |
391 | } | |
392 | ||
15b7b73d MP |
393 | argp = argv; |
394 | ret = parse_arguments(&argc, (const char ***) &argp, 0); | |
3591c066 | 395 | |
7b372642 | 396 | if (request) { |
97cb8dc2 | 397 | if (*auth_user) { |
d0d56395 AT |
398 | rprintf(FINFO,"rsync %s %s from %s@%s (%s)\n", |
399 | am_sender?"on":"to", | |
97cb8dc2 | 400 | request, auth_user, host, addr); |
d0d56395 AT |
401 | } else { |
402 | rprintf(FINFO,"rsync %s %s from %s (%s)\n", | |
403 | am_sender?"on":"to", | |
404 | request, host, addr); | |
405 | } | |
7b372642 AT |
406 | free(request); |
407 | } | |
408 | ||
15b7b73d | 409 | #ifndef DEBUG |
3591c066 AT |
410 | /* don't allow the logs to be flooded too fast */ |
411 | if (verbose > 1) verbose = 1; | |
0199b05f | 412 | #endif |
3591c066 | 413 | |
09b7f5db AT |
414 | if (remote_version < 23) { |
415 | if (remote_version == 22 || (remote_version > 17 && am_sender)) | |
416 | io_start_multiplex_out(fd); | |
554e0a8d | 417 | } |
15b7b73d MP |
418 | |
419 | /* For later protocol versions, we don't start multiplexing | |
420 | * until we've configured nonblocking in start_server. That | |
421 | * means we're in a sticky situation now: there's no way to | |
422 | * convey errors to the client. */ | |
423 | ||
424 | /* FIXME: Hold off on reporting option processing errors until | |
425 | * we've set up nonblocking and multiplexed IO and can get the | |
426 | * message back to them. */ | |
41979ff8 | 427 | if (!ret) { |
15b7b73d MP |
428 | option_error(); |
429 | exit_cleanup(RERR_UNSUPPORTED); | |
41979ff8 AT |
430 | } |
431 | ||
81791cfc AT |
432 | if (lp_timeout(i)) { |
433 | extern int io_timeout; | |
434 | io_timeout = lp_timeout(i); | |
435 | } | |
436 | ||
3591c066 AT |
437 | start_server(fd, fd, argc, argp); |
438 | ||
439 | return 0; | |
440 | } | |
441 | ||
7a6421fa AT |
442 | /* send a list of available modules to the client. Don't list those |
443 | with "list = False". */ | |
3591c066 AT |
444 | static void send_listing(int fd) |
445 | { | |
446 | int n = lp_numservices(); | |
447 | int i; | |
063393d6 MP |
448 | extern int remote_version; |
449 | ||
3591c066 AT |
450 | for (i=0;i<n;i++) |
451 | if (lp_list(i)) | |
452 | io_printf(fd, "%-15s\t%s\n", lp_name(i), lp_comment(i)); | |
8f04bb36 | 453 | |
063393d6 MP |
454 | if (remote_version >= 25) |
455 | io_printf(fd,"@RSYNCD: EXIT\n"); | |
3591c066 AT |
456 | } |
457 | ||
458 | /* this is called when a socket connection is established to a client | |
459 | and we want to start talking. The setup of the system is done from | |
460 | here */ | |
461 | static int start_daemon(int fd) | |
462 | { | |
7a6421fa | 463 | char line[200]; |
3591c066 | 464 | char *motd; |
8ef4ffd6 | 465 | int i = -1; |
4cdf25e4 | 466 | extern char *config_file; |
13c5fc0e | 467 | extern int remote_version; |
4cdf25e4 | 468 | |
f9e940ef | 469 | if (!lp_load(config_file, 0)) { |
65417579 | 470 | exit_cleanup(RERR_SYNTAX); |
4cdf25e4 | 471 | } |
3591c066 AT |
472 | |
473 | set_socket_options(fd,"SO_KEEPALIVE"); | |
a6801c39 | 474 | set_socket_options(fd,lp_socket_options()); |
f0359dd0 | 475 | set_nonblocking(fd); |
3591c066 AT |
476 | |
477 | io_printf(fd,"@RSYNCD: %d\n", PROTOCOL_VERSION); | |
478 | ||
479 | motd = lp_motd_file(); | |
27d3cdbc | 480 | if (motd && *motd) { |
3591c066 AT |
481 | FILE *f = fopen(motd,"r"); |
482 | while (f && !feof(f)) { | |
483 | int len = fread(line, 1, sizeof(line)-1, f); | |
484 | if (len > 0) { | |
485 | line[len] = 0; | |
486 | io_printf(fd,"%s", line); | |
487 | } | |
488 | } | |
489 | if (f) fclose(f); | |
490 | io_printf(fd,"\n"); | |
491 | } | |
492 | ||
91eee594 AT |
493 | if (!read_line(fd, line, sizeof(line)-1)) { |
494 | return -1; | |
495 | } | |
496 | ||
497 | if (sscanf(line,"@RSYNCD: %d", &remote_version) != 1) { | |
c8e78d87 | 498 | io_printf(fd,"@ERROR: protocol startup error\n"); |
91eee594 AT |
499 | return -1; |
500 | } | |
501 | ||
8ef4ffd6 | 502 | while (i == -1) { |
3591c066 AT |
503 | line[0] = 0; |
504 | if (!read_line(fd, line, sizeof(line)-1)) { | |
505 | return -1; | |
506 | } | |
507 | ||
508 | if (!*line || strcmp(line,"#list")==0) { | |
509 | send_listing(fd); | |
510 | return -1; | |
511 | } | |
512 | ||
513 | if (*line == '#') { | |
514 | /* it's some sort of command that I don't understand */ | |
c8e78d87 | 515 | io_printf(fd,"@ERROR: Unknown command '%s'\n", line); |
3591c066 AT |
516 | return -1; |
517 | } | |
518 | ||
519 | i = lp_number(line); | |
520 | if (i == -1) { | |
c8e78d87 | 521 | io_printf(fd,"@ERROR: Unknown module '%s'\n", line); |
3591c066 AT |
522 | return -1; |
523 | } | |
3591c066 AT |
524 | } |
525 | ||
8ef4ffd6 | 526 | return rsync_module(fd, i); |
3591c066 AT |
527 | } |
528 | ||
529 | ||
530 | int daemon_main(void) | |
531 | { | |
f9e940ef | 532 | extern char *config_file; |
ad517ce5 | 533 | extern int orig_umask; |
8638dd48 | 534 | char *pid_file; |
13e29995 | 535 | extern int no_detach; |
1a016bfd | 536 | |
3591c066 | 537 | if (is_a_socket(STDIN_FILENO)) { |
41979ff8 AT |
538 | int i; |
539 | ||
540 | /* we are running via inetd - close off stdout and | |
541 | stderr so that library functions (and getopt) don't | |
542 | try to use them. Redirect them to /dev/null */ | |
543 | for (i=1;i<3;i++) { | |
544 | close(i); | |
545 | open("/dev/null", O_RDWR); | |
546 | } | |
3eb38818 | 547 | |
3591c066 AT |
548 | return start_daemon(STDIN_FILENO); |
549 | } | |
550 | ||
13e29995 | 551 | if (!no_detach) |
a538066d | 552 | become_daemon(); |
3591c066 | 553 | |
f9e940ef | 554 | if (!lp_load(config_file, 1)) { |
65417579 | 555 | exit_cleanup(RERR_SYNTAX); |
f9e940ef AT |
556 | } |
557 | ||
45a83540 | 558 | log_init(); |
f9e940ef | 559 | |
a358449a MP |
560 | rprintf(FINFO, "rsyncd version %s starting, listening on port %d\n", |
561 | RSYNC_VERSION, | |
15b7b73d MP |
562 | rsync_port); |
563 | /* TODO: If listening on a particular address, then show that | |
431efc89 MP |
564 | * address too. In fact, why not just do inet_ntop on the |
565 | * local address??? */ | |
e42c9458 | 566 | |
8638dd48 | 567 | if (((pid_file = lp_pid_file()) != NULL) && (*pid_file != '\0')) { |
ad517ce5 DD |
568 | char pidbuf[16]; |
569 | int fd; | |
8638dd48 DD |
570 | int pid = (int) getpid(); |
571 | cleanup_set_pid(pid); | |
ad517ce5 DD |
572 | if ((fd = do_open(lp_pid_file(), O_WRONLY|O_CREAT|O_TRUNC, |
573 | 0666 & ~orig_umask)) == -1) { | |
8638dd48 | 574 | cleanup_set_pid(0); |
a039749b | 575 | rsyserr(FLOG, errno, "failed to create pid file %s", pid_file); |
65417579 | 576 | exit_cleanup(RERR_FILEIO); |
8638dd48 | 577 | } |
8950ac03 | 578 | snprintf(pidbuf, sizeof(pidbuf), "%d\n", pid); |
ad517ce5 DD |
579 | write(fd, pidbuf, strlen(pidbuf)); |
580 | close(fd); | |
8638dd48 DD |
581 | } |
582 | ||
8ef4ffd6 AT |
583 | start_accept_loop(rsync_port, start_daemon); |
584 | return -1; | |
3591c066 AT |
585 | } |
586 |