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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> | |
c5fabfb0 | 6 | * Copyright (C) 2002-2020 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" |
5dd14f0c | 23 | #include "itypes.h" |
3591c066 | 24 | |
53936ef9 | 25 | extern int quiet; |
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; | |
c0268d92 | 33 | extern int msgs2stderr; |
3591c066 | 34 | extern int rsync_port; |
53936ef9 | 35 | extern int protect_args; |
3162ea6f | 36 | extern int ignore_errors; |
cbbd8e2e | 37 | extern int preserve_xattrs; |
8dad7fc6 | 38 | extern int kluge_around_eof; |
6e195fe9 | 39 | extern int daemon_over_rsh; |
41adbcec | 40 | extern int munge_symlinks; |
f0e670b4 | 41 | extern int open_noatime; |
b35d0d8e | 42 | extern int sanitize_paths; |
0b52f94d | 43 | extern int numeric_ids; |
7c2a9e76 | 44 | extern int filesfrom_fd; |
daa598df WD |
45 | extern int remote_protocol; |
46 | extern int protocol_version; | |
6e195fe9 | 47 | extern int io_timeout; |
6e195fe9 | 48 | extern int no_detach; |
5223b786 | 49 | extern int write_batch; |
6e195fe9 | 50 | extern int default_af_hint; |
ecc7623e WD |
51 | extern int logfile_format_has_i; |
52 | extern int logfile_format_has_o_or_i; | |
6e195fe9 | 53 | extern char *bind_address; |
6e195fe9 | 54 | extern char *config_file; |
ecc7623e | 55 | extern char *logfile_format; |
bf4679e8 | 56 | extern char *files_from; |
fed1f3f4 | 57 | extern char *tmpdir; |
e16b2275 | 58 | extern char *early_input_file; |
730df9d2 | 59 | extern struct chmod_mode_struct *chmod_modes; |
7b6c5c77 | 60 | extern filter_rule_list daemon_filter_list; |
0b52f94d WD |
61 | #ifdef ICONV_OPTION |
62 | extern char *iconv_opt; | |
63 | extern iconv_t ic_send, ic_recv; | |
64 | #endif | |
17b849c9 WD |
65 | extern uid_t our_uid; |
66 | extern gid_t our_gid; | |
6e195fe9 WD |
67 | |
68 | char *auth_user; | |
18638730 | 69 | int read_only = 0; |
211bc43b | 70 | int module_id = -1; |
b177311a | 71 | int pid_file_fd = -1; |
e16b2275 WD |
72 | int early_input_len = 0; |
73 | char *early_input = NULL; | |
8840ec0f | 74 | struct chmod_mode_struct *daemon_chmod_modes; |
3591c066 | 75 | |
e16b2275 WD |
76 | #define EARLY_INPUT_CMD "#early_input=" |
77 | #define EARLY_INPUT_CMDLEN (sizeof EARLY_INPUT_CMD - 1) | |
78 | ||
33cbd577 | 79 | /* module_dirlen is the length of the module_dir string when in daemon |
2fe1feea WD |
80 | * mode and module_dir is not "/"; otherwise 0. (Note that a chroot- |
81 | * enabled module can have a non-"/" module_dir these days.) */ | |
33cbd577 | 82 | char *module_dir = NULL; |
e7bf7c01 WD |
83 | unsigned int module_dirlen = 0; |
84 | ||
26e21efc WD |
85 | char *full_module_path; |
86 | ||
7909e65f WD |
87 | static int rl_nulls = 0; |
88 | ||
d749eb68 WD |
89 | #ifdef HAVE_SIGACTION |
90 | static struct sigaction sigact; | |
91 | #endif | |
92 | ||
2a7355fb | 93 | static item_list gid_list = EMPTY_ITEM_LIST; |
7f367bb1 | 94 | |
11ef77b7 MM |
95 | /* Used when "reverse lookup" is off. */ |
96 | const char undetermined_hostname[] = "UNDETERMINED"; | |
97 | ||
be2961da | 98 | /** |
bc363ea9 | 99 | * Run a client connected to an rsyncd. The alternative to this |
be2961da MP |
100 | * function for remote-shell connections is do_cmd(). |
101 | * | |
fdf88d75 MP |
102 | * After negotiating which module to use and reading the server's |
103 | * motd, this hands over to client_run(). Telling the server the | |
104 | * module will cause it to chroot/setuid/etc. | |
105 | * | |
106 | * Instead of doing a transfer, the client may at this stage instead | |
107 | * get a listing of remote modules and exit. | |
be2961da MP |
108 | * |
109 | * @return -1 for error in startup, or the result of client_run(). | |
d0829892 | 110 | * Either way, it eventually gets passed to exit_cleanup(). |
be2961da | 111 | **/ |
7909e65f WD |
112 | int start_socket_client(char *host, int remote_argc, char *remote_argv[], |
113 | int argc, char *argv[]) | |
3591c066 | 114 | { |
68f40ebb | 115 | int fd, ret; |
2e94e70e | 116 | char *p, *user = NULL; |
4a7144ee | 117 | |
1732b6c0 WD |
118 | /* This is redundant with code in start_inband_exchange(), but this |
119 | * short-circuits a problem in the client before we open a socket, | |
120 | * and the extra check won't hurt. */ | |
7909e65f | 121 | if (**remote_argv == '/') { |
1732b6c0 WD |
122 | rprintf(FERROR, |
123 | "ERROR: The remote path must start with a module name not a /\n"); | |
f98df1d9 AT |
124 | return -1; |
125 | } | |
126 | ||
b31c92ed | 127 | if ((p = strrchr(host, '@')) != NULL) { |
bcb7e502 AT |
128 | user = host; |
129 | host = p+1; | |
1732b6c0 | 130 | *p = '\0'; |
bcb7e502 AT |
131 | } |
132 | ||
e63ff70e | 133 | fd = open_socket_out_wrapped(host, rsync_port, bind_address, default_af_hint); |
df5cd107 | 134 | if (fd == -1) |
65417579 | 135 | exit_cleanup(RERR_SOCKETIO); |
68f40ebb | 136 | |
5b3aa802 WD |
137 | #ifdef ICONV_CONST |
138 | setup_iconv(); | |
139 | #endif | |
140 | ||
7909e65f | 141 | ret = start_inband_exchange(fd, fd, user, remote_argc, remote_argv); |
68f40ebb | 142 | |
180443af | 143 | return ret ? ret : client_run(fd, fd, -1, argc, argv); |
68f40ebb WD |
144 | } |
145 | ||
7909e65f WD |
146 | static int exchange_protocols(int f_in, int f_out, char *buf, size_t bufsiz, int am_client) |
147 | { | |
148 | int remote_sub = -1; | |
149 | #if SUBPROTOCOL_VERSION != 0 | |
150 | int our_sub = protocol_version < PROTOCOL_VERSION ? 0 : SUBPROTOCOL_VERSION; | |
151 | #else | |
152 | int our_sub = 0; | |
153 | #endif | |
7909e65f WD |
154 | |
155 | io_printf(f_out, "@RSYNCD: %d.%d\n", protocol_version, our_sub); | |
7909e65f | 156 | if (!am_client) { |
e16b2275 | 157 | char *motd = lp_motd_file(); |
7909e65f | 158 | if (motd && *motd) { |
e16b2275 | 159 | FILE *f = fopen(motd, "r"); |
7909e65f WD |
160 | while (f && !feof(f)) { |
161 | int len = fread(buf, 1, bufsiz - 1, f); | |
162 | if (len > 0) | |
163 | write_buf(f_out, buf, len); | |
164 | } | |
165 | if (f) | |
166 | fclose(f); | |
167 | write_sbuf(f_out, "\n"); | |
168 | } | |
169 | } | |
170 | ||
171 | /* This strips the \n. */ | |
5ebe9a46 | 172 | if (!read_line_old(f_in, buf, bufsiz, 0)) { |
7909e65f WD |
173 | if (am_client) |
174 | rprintf(FERROR, "rsync: did not see server greeting\n"); | |
175 | return -1; | |
176 | } | |
177 | ||
178 | if (sscanf(buf, "@RSYNCD: %d.%d", &remote_protocol, &remote_sub) < 1) { | |
179 | if (am_client) | |
180 | rprintf(FERROR, "rsync: server sent \"%s\" rather than greeting\n", buf); | |
181 | else | |
182 | io_printf(f_out, "@ERROR: protocol startup error\n"); | |
183 | return -1; | |
184 | } | |
185 | ||
186 | if (remote_sub < 0) { | |
187 | if (remote_protocol == 30) { | |
188 | if (am_client) | |
189 | rprintf(FERROR, "rsync: server is speaking an incompatible beta of protocol 30\n"); | |
190 | else | |
191 | io_printf(f_out, "@ERROR: your client is speaking an incompatible beta of protocol 30\n"); | |
192 | return -1; | |
193 | } | |
194 | remote_sub = 0; | |
195 | } | |
196 | ||
197 | if (protocol_version > remote_protocol) { | |
198 | protocol_version = remote_protocol; | |
199 | if (remote_sub) | |
200 | protocol_version--; | |
201 | } else if (protocol_version == remote_protocol) { | |
202 | if (remote_sub != our_sub) | |
203 | protocol_version--; | |
204 | } | |
205 | #if SUBPROTOCOL_VERSION != 0 | |
206 | else if (protocol_version < remote_protocol) { | |
207 | if (our_sub) | |
208 | protocol_version--; | |
209 | } | |
210 | #endif | |
211 | ||
212 | if (protocol_version >= 30) | |
213 | rl_nulls = 1; | |
214 | ||
215 | return 0; | |
216 | } | |
217 | ||
218 | int start_inband_exchange(int f_in, int f_out, const char *user, int argc, char *argv[]) | |
68f40ebb | 219 | { |
e844a4a8 | 220 | int i, modlen; |
7909e65f | 221 | char line[BIGPATHBUFLEN]; |
68f40ebb WD |
222 | char *sargs[MAX_ARGS]; |
223 | int sargc = 0; | |
e844a4a8 | 224 | char *p, *modname; |
68f40ebb | 225 | |
d4c5cb2b | 226 | assert(argc > 0 && *argv != NULL); |
68f40ebb | 227 | |
e844a4a8 | 228 | if (**argv == '/') { |
1732b6c0 WD |
229 | rprintf(FERROR, |
230 | "ERROR: The remote path must start with a module name\n"); | |
68f40ebb WD |
231 | return -1; |
232 | } | |
233 | ||
e844a4a8 WD |
234 | if (!(p = strchr(*argv, '/'))) |
235 | modlen = strlen(*argv); | |
236 | else | |
237 | modlen = p - *argv; | |
238 | ||
11eb67ee | 239 | modname = new_array(char, modlen+1+1); /* room for '/' & '\0' */ |
e844a4a8 WD |
240 | strlcpy(modname, *argv, modlen + 1); |
241 | modname[modlen] = '/'; | |
242 | modname[modlen+1] = '\0'; | |
243 | ||
2e94e70e WD |
244 | if (!user) |
245 | user = getenv("USER"); | |
246 | if (!user) | |
247 | user = getenv("LOGNAME"); | |
68f40ebb | 248 | |
7909e65f | 249 | if (exchange_protocols(f_in, f_out, line, sizeof line, 1) < 0) |
3591c066 | 250 | return -1; |
3591c066 | 251 | |
e16b2275 WD |
252 | if (early_input_file) { |
253 | STRUCT_STAT st; | |
254 | FILE *f = fopen(early_input_file, "rb"); | |
255 | if (!f || do_fstat(fileno(f), &st) < 0) { | |
256 | rsyserr(FERROR, errno, "failed to open %s", early_input_file); | |
257 | return -1; | |
258 | } | |
259 | early_input_len = st.st_size; | |
662fedd7 WD |
260 | if (early_input_len > (int)sizeof line) { |
261 | rprintf(FERROR, "%s is > %d bytes.\n", early_input_file, (int)sizeof line); | |
e16b2275 WD |
262 | return -1; |
263 | } | |
264 | if (early_input_len > 0) { | |
265 | io_printf(f_out, EARLY_INPUT_CMD "%d\n", early_input_len); | |
266 | while (early_input_len > 0) { | |
267 | int len; | |
268 | if (feof(f)) { | |
269 | rprintf(FERROR, "Early EOF in %s\n", early_input_file); | |
270 | return -1; | |
271 | } | |
662fedd7 | 272 | len = fread(line, 1, early_input_len, f); |
e16b2275 WD |
273 | if (len > 0) { |
274 | write_buf(f_out, line, len); | |
275 | early_input_len -= len; | |
276 | } | |
277 | } | |
278 | } | |
279 | fclose(f); | |
280 | } | |
281 | ||
9bcb2595 WD |
282 | /* set daemon_over_rsh to false since we need to build the |
283 | * true set of args passed through the rsh/ssh connection; | |
284 | * this is a no-op for direct-socket-connection mode */ | |
285 | daemon_over_rsh = 0; | |
286 | server_options(sargs, &sargc); | |
287 | ||
7909e65f WD |
288 | if (sargc >= MAX_ARGS - 2) |
289 | goto arg_overflow; | |
290 | ||
9bcb2595 WD |
291 | sargs[sargc++] = "."; |
292 | ||
7909e65f WD |
293 | while (argc > 0) { |
294 | if (sargc >= MAX_ARGS - 1) { | |
295 | arg_overflow: | |
296 | rprintf(FERROR, "internal: args[] overflowed in do_cmd()\n"); | |
297 | exit_cleanup(RERR_SYNTAX); | |
298 | } | |
d348d5fd | 299 | if (strncmp(*argv, modname, modlen) == 0 |
e844a4a8 WD |
300 | && argv[0][modlen] == '\0') |
301 | sargs[sargc++] = modname; /* we send "modname/" */ | |
8f30d215 WD |
302 | else if (**argv == '-') { |
303 | if (asprintf(sargs + sargc++, "./%s", *argv) < 0) | |
304 | out_of_memory("start_inband_exchange"); | |
305 | } else | |
e844a4a8 WD |
306 | sargs[sargc++] = *argv; |
307 | argv++; | |
7909e65f WD |
308 | argc--; |
309 | } | |
9bcb2595 WD |
310 | |
311 | sargs[sargc] = NULL; | |
312 | ||
951e826b | 313 | if (DEBUG_GTE(CMD, 1)) |
0b515981 | 314 | print_child_argv("sending daemon args:", sargs); |
9bcb2595 | 315 | |
e844a4a8 | 316 | io_printf(f_out, "%.*s\n", modlen, modname); |
2c91d3d3 | 317 | |
063393d6 MP |
318 | /* Old servers may just drop the connection here, |
319 | rather than sending a proper EXIT command. Yuck. */ | |
8dad7fc6 | 320 | kluge_around_eof = list_only && protocol_version < 25 ? 1 : 0; |
7a55d06e | 321 | |
063393d6 | 322 | while (1) { |
5ebe9a46 | 323 | if (!read_line_old(f_in, line, sizeof line, 0)) { |
be2961da | 324 | rprintf(FERROR, "rsync: didn't get server startup line\n"); |
3591c066 AT |
325 | return -1; |
326 | } | |
31593dd6 | 327 | |
31593dd6 | 328 | if (strncmp(line,"@RSYNCD: AUTHREQD ",18) == 0) { |
68f40ebb | 329 | auth_client(f_out, user, line+18); |
31593dd6 AT |
330 | continue; |
331 | } | |
31593dd6 | 332 | |
2e94e70e WD |
333 | if (strcmp(line,"@RSYNCD: OK") == 0) |
334 | break; | |
8f04bb36 | 335 | |
cae95647 MP |
336 | if (strcmp(line,"@RSYNCD: EXIT") == 0) { |
337 | /* This is sent by recent versions of the | |
338 | * server to terminate the listing of modules. | |
339 | * We don't want to go on and transfer | |
340 | * anything; just exit. */ | |
341 | exit(0); | |
342 | } | |
8f04bb36 | 343 | |
136ac7ec | 344 | if (strncmp(line, "@ERROR", 6) == 0) { |
1732b6c0 | 345 | rprintf(FERROR, "%s\n", line); |
136ac7ec MP |
346 | /* This is always fatal; the server will now |
347 | * close the socket. */ | |
180443af | 348 | return -1; |
136ac7ec | 349 | } |
180443af | 350 | |
9ce7fc38 WD |
351 | /* This might be a MOTD line or a module listing, but there is |
352 | * no way to differentiate it. The manpage mentions this. */ | |
353 | if (output_motd) | |
354 | rprintf(FINFO, "%s\n", line); | |
3591c066 | 355 | } |
8dad7fc6 | 356 | kluge_around_eof = 0; |
3591c066 | 357 | |
7909e65f WD |
358 | if (rl_nulls) { |
359 | for (i = 0; i < sargc; i++) { | |
53936ef9 WD |
360 | if (!sargs[i]) /* stop at --protect-args NULL */ |
361 | break; | |
7909e65f WD |
362 | write_sbuf(f_out, sargs[i]); |
363 | write_byte(f_out, 0); | |
364 | } | |
365 | write_byte(f_out, 0); | |
366 | } else { | |
367 | for (i = 0; i < sargc; i++) | |
368 | io_printf(f_out, "%s\n", sargs[i]); | |
369 | write_sbuf(f_out, "\n"); | |
3591c066 | 370 | } |
3591c066 | 371 | |
53936ef9 WD |
372 | if (protect_args) |
373 | send_protected_args(f_out, sargs); | |
374 | ||
daa598df | 375 | if (protocol_version < 23) { |
3f55bd5d | 376 | if (protocol_version == 22 || !am_sender) |
d8587b46 | 377 | io_start_multiplex_in(f_in); |
09b7f5db | 378 | } |
8d9dc9f9 | 379 | |
e844a4a8 WD |
380 | free(modname); |
381 | ||
68f40ebb | 382 | return 0; |
3591c066 AT |
383 | } |
384 | ||
a3377921 WD |
385 | #ifdef HAVE_PUTENV |
386 | static int read_arg_from_pipe(int fd, char *buf, int limit) | |
387 | { | |
388 | char *bp = buf, *eob = buf + limit - 1; | |
389 | ||
390 | while (1) { | |
391 | int got = read(fd, bp, 1); | |
392 | if (got != 1) { | |
393 | if (got < 0 && errno == EINTR) | |
394 | continue; | |
395 | return -1; | |
396 | } | |
397 | if (*bp == '\0') | |
398 | break; | |
399 | if (bp < eob) | |
400 | bp++; | |
401 | } | |
402 | *bp = '\0'; | |
403 | ||
404 | return bp - buf; | |
405 | } | |
406 | #endif | |
407 | ||
408 | static void set_env_str(const char *var, const char *str) | |
409 | { | |
410 | #ifdef HAVE_PUTENV | |
411 | char *mem; | |
412 | if (asprintf(&mem, "%s=%s", var, str) < 0) | |
413 | out_of_memory("set_env_str"); | |
414 | putenv(mem); | |
415 | #endif | |
416 | } | |
417 | ||
418 | #ifdef HAVE_PUTENV | |
419 | void set_env_num(const char *var, long num) | |
420 | { | |
421 | char *mem; | |
422 | if (asprintf(&mem, "%s=%ld", var, num) < 0) | |
423 | out_of_memory("set_env_num"); | |
424 | putenv(mem); | |
425 | } | |
426 | #endif | |
427 | ||
428 | /* Used for both early exec & pre-xfer exec */ | |
429 | static pid_t start_pre_exec(const char *cmd, int *arg_fd_ptr, int *error_fd_ptr) | |
430 | { | |
3c56896d | 431 | int arg_fds[2], error_fds[2], arg_fd; |
a3377921 WD |
432 | pid_t pid; |
433 | ||
e16b2275 | 434 | if ((error_fd_ptr && pipe(error_fds) < 0) || pipe(arg_fds) < 0 || (pid = fork()) < 0) |
a3377921 WD |
435 | return (pid_t)-1; |
436 | ||
437 | if (pid == 0) { | |
438 | char buf[BIGPATHBUFLEN]; | |
439 | int j, len, status; | |
440 | ||
441 | if (error_fd_ptr) { | |
442 | close(error_fds[0]); | |
3c56896d | 443 | set_blocking(error_fds[1]); |
a3377921 WD |
444 | } |
445 | ||
e16b2275 WD |
446 | close(arg_fds[1]); |
447 | arg_fd = arg_fds[0]; | |
448 | set_blocking(arg_fd); | |
449 | ||
450 | len = read_arg_from_pipe(arg_fd, buf, BIGPATHBUFLEN); | |
451 | if (len <= 0) | |
452 | _exit(1); | |
453 | set_env_str("RSYNC_REQUEST", buf); | |
a3377921 | 454 | |
e16b2275 WD |
455 | for (j = 0; ; j++) { |
456 | char *p; | |
a3377921 | 457 | len = read_arg_from_pipe(arg_fd, buf, BIGPATHBUFLEN); |
e16b2275 WD |
458 | if (len <= 0) { |
459 | if (!len) | |
460 | break; | |
a3377921 | 461 | _exit(1); |
a3377921 | 462 | } |
e16b2275 WD |
463 | if (asprintf(&p, "RSYNC_ARG%d=%s", j, buf) >= 0) |
464 | putenv(p); | |
a3377921 WD |
465 | } |
466 | ||
e16b2275 WD |
467 | dup2(arg_fd, STDIN_FILENO); |
468 | close(arg_fd); | |
469 | ||
a3377921 | 470 | if (error_fd_ptr) { |
3c56896d WD |
471 | dup2(error_fds[1], STDOUT_FILENO); |
472 | close(error_fds[1]); | |
a3377921 WD |
473 | } |
474 | ||
475 | status = shell_exec(cmd); | |
476 | ||
477 | if (!WIFEXITED(status)) | |
478 | _exit(1); | |
479 | _exit(WEXITSTATUS(status)); | |
480 | } | |
481 | ||
482 | if (error_fd_ptr) { | |
483 | close(error_fds[1]); | |
3c56896d WD |
484 | *error_fd_ptr = error_fds[0]; |
485 | set_blocking(error_fds[0]); | |
a3377921 WD |
486 | } |
487 | ||
e16b2275 WD |
488 | close(arg_fds[0]); |
489 | arg_fd = *arg_fd_ptr = arg_fds[1]; | |
490 | set_blocking(arg_fd); | |
a3377921 WD |
491 | |
492 | return pid; | |
493 | } | |
494 | ||
e16b2275 | 495 | static void write_pre_exec_args(int write_fd, char *request, char **early_argv, char **argv, int am_early) |
c95ca2a2 | 496 | { |
a3377921 | 497 | int j = 0; |
3591c066 | 498 | |
7909e65f WD |
499 | if (!request) |
500 | request = "(NONE)"; | |
141c6265 | 501 | |
820f7a7b | 502 | write_buf(write_fd, request, strlen(request)+1); |
53936ef9 WD |
503 | if (early_argv) { |
504 | for ( ; *early_argv; early_argv++) | |
820f7a7b | 505 | write_buf(write_fd, *early_argv, strlen(*early_argv)+1); |
53936ef9 WD |
506 | j = 1; /* Skip arg0 name in argv. */ |
507 | } | |
e16b2275 WD |
508 | if (argv) { |
509 | for ( ; argv[j]; j++) | |
510 | write_buf(write_fd, argv[j], strlen(argv[j])+1); | |
511 | } | |
820f7a7b | 512 | write_byte(write_fd, 0); |
141c6265 | 513 | |
e16b2275 WD |
514 | if (am_early && early_input_len) |
515 | write_buf(write_fd, early_input, early_input_len); | |
516 | ||
820f7a7b | 517 | close(write_fd); |
a3377921 | 518 | } |
820f7a7b | 519 | |
a3377921 WD |
520 | static char *finish_pre_exec(const char *desc, pid_t pid, int read_fd) |
521 | { | |
522 | char buf[BIGPATHBUFLEN], *bp, *cr; | |
523 | int j, status = -1, msglen = sizeof buf - 1; | |
524 | ||
525 | if (read_fd >= 0) { | |
526 | /* Read the stdout from the program. This it is only displayed | |
527 | * to the user if the script also returns an error status. */ | |
528 | for (bp = buf, cr = buf; msglen > 0; msglen -= j) { | |
529 | if ((j = read(read_fd, bp, msglen)) <= 0) { | |
530 | if (j == 0) | |
531 | break; | |
532 | if (errno == EINTR) | |
533 | continue; | |
534 | break; /* Just ignore the read error for now... */ | |
535 | } | |
536 | bp[j] = '\0'; | |
537 | while (1) { | |
538 | if ((cr = strchr(cr, '\r')) == NULL) { | |
539 | cr = bp + j; | |
540 | break; | |
541 | } | |
542 | if (!cr[1]) | |
543 | break; /* wait for more data before we decide what to do */ | |
544 | if (cr[1] == '\n') { | |
545 | memmove(cr, cr+1, j - (cr - bp)); | |
546 | j--; | |
547 | } else | |
548 | cr++; | |
549 | } | |
550 | bp += j; | |
820f7a7b | 551 | } |
a3377921 | 552 | *bp = '\0'; |
820f7a7b | 553 | |
a3377921 WD |
554 | close(read_fd); |
555 | } else | |
556 | *buf = '\0'; | |
c95ca2a2 WD |
557 | |
558 | if (wait_process(pid, &status, 0) < 0 | |
559 | || !WIFEXITED(status) || WEXITSTATUS(status) != 0) { | |
560 | char *e; | |
a3377921 WD |
561 | if (asprintf(&e, "%s returned failure (%d)%s%s%s\n%s", |
562 | desc, status, status < 0 ? ": " : "", | |
d80f7d6c WD |
563 | status < 0 ? strerror(errno) : "", |
564 | *buf ? ":" : "", buf) < 0) | |
820f7a7b | 565 | return "out_of_memory in finish_pre_exec\n"; |
c95ca2a2 WD |
566 | return e; |
567 | } | |
568 | return NULL; | |
569 | } | |
3591c066 | 570 | |
26e21efc WD |
571 | static int path_failure(int f_out, const char *dir, BOOL was_chdir) |
572 | { | |
573 | if (was_chdir) | |
881addc9 | 574 | rsyserr(FLOG, errno, "chdir %s failed", dir); |
26e21efc WD |
575 | else |
576 | rprintf(FLOG, "normalize_path(%s) failed\n", dir); | |
577 | io_printf(f_out, "@ERROR: chdir failed\n"); | |
578 | return -1; | |
579 | } | |
580 | ||
7f367bb1 WD |
581 | static int add_a_group(int f_out, const char *gname) |
582 | { | |
2a7355fb | 583 | gid_t gid, *gid_p; |
56017d31 WD |
584 | if (!group_to_gid(gname, &gid, True)) { |
585 | rprintf(FLOG, "Invalid gid %s\n", gname); | |
586 | io_printf(f_out, "@ERROR: invalid gid %s\n", gname); | |
587 | return -1; | |
7f367bb1 | 588 | } |
2a7355fb WD |
589 | gid_p = EXPAND_ITEM_LIST(&gid_list, gid_t, -32); |
590 | *gid_p = gid; | |
7f367bb1 WD |
591 | return 0; |
592 | } | |
593 | ||
d7205694 WD |
594 | #ifdef HAVE_GETGROUPLIST |
595 | static int want_all_groups(int f_out, uid_t uid) | |
596 | { | |
597 | const char *err; | |
2a7355fb | 598 | if ((err = getallgroups(uid, &gid_list)) != NULL) { |
d7205694 WD |
599 | rsyserr(FLOG, errno, "%s", err); |
600 | io_printf(f_out, "@ERROR: %s\n", err); | |
601 | return -1; | |
602 | } | |
603 | return 0; | |
604 | } | |
605 | #elif defined HAVE_INITGROUPS | |
7f367bb1 WD |
606 | static struct passwd *want_all_groups(int f_out, uid_t uid) |
607 | { | |
7f367bb1 | 608 | struct passwd *pw; |
2a7355fb | 609 | gid_t *gid_p; |
7f367bb1 WD |
610 | if ((pw = getpwuid(uid)) == NULL) { |
611 | rsyserr(FLOG, errno, "getpwuid failed"); | |
612 | io_printf(f_out, "@ERROR: getpwuid failed\n"); | |
613 | return NULL; | |
614 | } | |
2a7355fb WD |
615 | /* Start with the default group and initgroups() will add the rest. */ |
616 | gid_p = EXPAND_ITEM_LIST(&gid_list, gid_t, -32); | |
617 | *gid_p = pw->pw_gid; | |
7f367bb1 | 618 | return pw; |
7f367bb1 | 619 | } |
d7205694 | 620 | #endif |
7f367bb1 | 621 | |
df694f72 | 622 | static int rsync_module(int f_in, int f_out, int i, const char *addr, const char *host) |
3591c066 | 623 | { |
53936ef9 | 624 | int argc; |
433c6753 | 625 | char **argv, **orig_argv, **orig_early_argv, *module_chdir; |
20accf4d | 626 | char line[BIGPATHBUFLEN]; |
d7205694 | 627 | #if defined HAVE_INITGROUPS && !defined HAVE_GETGROUPLIST |
7f367bb1 | 628 | struct passwd *pw = NULL; |
d7205694 | 629 | #endif |
7f367bb1 WD |
630 | uid_t uid; |
631 | int set_uid; | |
c95ca2a2 | 632 | char *p, *err_msg = NULL; |
874895d5 | 633 | char *name = lp_name(i); |
8638dd48 | 634 | int use_chroot = lp_use_chroot(i); |
820f7a7b | 635 | int ret, pre_exec_arg_fd = -1, pre_exec_error_fd = -1; |
41adbcec | 636 | int save_munge_symlinks; |
c95ca2a2 | 637 | pid_t pre_exec_pid = 0; |
2e94e70e | 638 | char *request = NULL; |
56c473b7 | 639 | |
0a9fbe17 WD |
640 | set_env_str("RSYNC_MODULE_NAME", name); |
641 | ||
15dbffc2 | 642 | #ifdef ICONV_OPTION |
0b52f94d WD |
643 | iconv_opt = lp_charset(i); |
644 | if (*iconv_opt) | |
645 | setup_iconv(); | |
646 | iconv_opt = NULL; | |
647 | #endif | |
648 | ||
11ef77b7 MM |
649 | /* If reverse lookup is disabled globally but enabled for this module, |
650 | * we need to do it now before the access check. */ | |
651 | if (host == undetermined_hostname && lp_reverse_lookup(i)) | |
cff0764b | 652 | host = client_name(client_addr(f_in)); |
0a9fbe17 WD |
653 | set_env_str("RSYNC_HOST_NAME", host); |
654 | set_env_str("RSYNC_HOST_ADDR", addr); | |
11ef77b7 | 655 | |
bf4170ad | 656 | if (!allow_access(addr, &host, i)) { |
1732b6c0 | 657 | rprintf(FLOG, "rsync denied on module %s from %s (%s)\n", |
31ec50d7 | 658 | name, host, addr); |
c0422cea WD |
659 | if (!lp_list(i)) |
660 | io_printf(f_out, "@ERROR: Unknown module '%s'\n", name); | |
661 | else { | |
662 | io_printf(f_out, | |
663 | "@ERROR: access denied to %s from %s (%s)\n", | |
664 | name, host, addr); | |
665 | } | |
56c473b7 AT |
666 | return -1; |
667 | } | |
3591c066 | 668 | |
c0268d92 | 669 | if (am_daemon > 0) { |
9e5a5ddb | 670 | rprintf(FLOG, "rsync allowed access on module %s from %s (%s)\n", |
68f40ebb WD |
671 | name, host, addr); |
672 | } | |
673 | ||
5e71c444 | 674 | if (!claim_connection(lp_lock_file(i), lp_max_connections(i))) { |
8d72ef6e | 675 | if (errno) { |
1732b6c0 | 676 | rsyserr(FLOG, errno, "failed to open lock file %s", |
45c49b52 | 677 | lp_lock_file(i)); |
4875d6b6 | 678 | io_printf(f_out, "@ERROR: failed to open lock file\n"); |
8d72ef6e | 679 | } else { |
1732b6c0 | 680 | rprintf(FLOG, "max connections (%d) reached\n", |
5e71c444 | 681 | lp_max_connections(i)); |
4ccfd96c | 682 | io_printf(f_out, "@ERROR: max connections (%d) reached -- try again later\n", |
837cbad9 | 683 | lp_max_connections(i)); |
8d72ef6e | 684 | } |
0c515f17 AT |
685 | return -1; |
686 | } | |
687 | ||
5ebe9a46 | 688 | read_only = lp_read_only(i); /* may also be overridden by auth_server() */ |
45c5b903 | 689 | auth_user = auth_server(f_in, f_out, i, host, addr, "@RSYNCD: AUTHREQD "); |
d0d56395 | 690 | |
97cb8dc2 | 691 | if (!auth_user) { |
68f40ebb | 692 | io_printf(f_out, "@ERROR: auth failed on module %s\n", name); |
4a7144ee | 693 | return -1; |
d0d56395 | 694 | } |
0a9fbe17 | 695 | set_env_str("RSYNC_USER_NAME", auth_user); |
d0d56395 | 696 | |
3591c066 AT |
697 | module_id = i; |
698 | ||
f4184849 WD |
699 | if (lp_transfer_logging(module_id) && !logfile_format) |
700 | logfile_format = lp_log_format(module_id); | |
10ae3406 WD |
701 | if (log_format_has(logfile_format, 'i')) |
702 | logfile_format_has_i = 1; | |
703 | if (logfile_format_has_i || log_format_has(logfile_format, 'o')) | |
704 | logfile_format_has_o_or_i = 1; | |
c0814b81 | 705 | |
7f367bb1 WD |
706 | uid = MY_UID(); |
707 | am_root = (uid == 0); | |
8ef4ffd6 | 708 | |
f4184849 | 709 | p = *lp_uid(module_id) ? lp_uid(module_id) : am_root ? NOBODY_USER : NULL; |
7f367bb1 | 710 | if (p) { |
56017d31 WD |
711 | if (!user_to_uid(p, &uid, True)) { |
712 | rprintf(FLOG, "Invalid uid %s\n", p); | |
713 | io_printf(f_out, "@ERROR: invalid uid %s\n", p); | |
714 | return -1; | |
716baed7 | 715 | } |
7f367bb1 WD |
716 | set_uid = 1; |
717 | } else | |
718 | set_uid = 0; | |
716baed7 | 719 | |
f4184849 | 720 | p = *lp_gid(module_id) ? conf_strtok(lp_gid(module_id)) : NULL; |
7f367bb1 WD |
721 | if (p) { |
722 | /* The "*" gid must be the first item in the list. */ | |
723 | if (strcmp(p, "*") == 0) { | |
d7205694 WD |
724 | #ifdef HAVE_GETGROUPLIST |
725 | if (want_all_groups(f_out, uid) < 0) | |
726 | return -1; | |
727 | #elif defined HAVE_INITGROUPS | |
7f367bb1 WD |
728 | if ((pw = want_all_groups(f_out, uid)) == NULL) |
729 | return -1; | |
d7205694 WD |
730 | #else |
731 | rprintf(FLOG, "This rsync does not support a gid of \"*\"\n"); | |
732 | io_printf(f_out, "@ERROR: invalid gid setting.\n"); | |
733 | return -1; | |
734 | #endif | |
7f367bb1 WD |
735 | } else if (add_a_group(f_out, p) < 0) |
736 | return -1; | |
9a12959a | 737 | while ((p = conf_strtok(NULL)) != NULL) { |
7f367bb1 WD |
738 | #if defined HAVE_INITGROUPS && !defined HAVE_GETGROUPLIST |
739 | if (pw) { | |
740 | rprintf(FLOG, "This rsync cannot add groups after \"*\".\n"); | |
741 | io_printf(f_out, "@ERROR: invalid gid setting.\n"); | |
716baed7 | 742 | return -1; |
4a7144ee | 743 | } |
7f367bb1 WD |
744 | #endif |
745 | if (add_a_group(f_out, p) < 0) | |
746 | return -1; | |
716baed7 | 747 | } |
7f367bb1 WD |
748 | } else if (am_root) { |
749 | if (add_a_group(f_out, NOBODY_GROUP) < 0) | |
750 | return -1; | |
8ef4ffd6 | 751 | } |
3b2b5345 | 752 | |
f4184849 | 753 | module_dir = lp_path(module_id); |
afccb3d3 WD |
754 | if (*module_dir == '\0') { |
755 | rprintf(FLOG, "No path specified for module %s\n", name); | |
756 | io_printf(f_out, "@ERROR: no path setting.\n"); | |
757 | return -1; | |
758 | } | |
2fe1feea WD |
759 | if (use_chroot) { |
760 | if ((p = strstr(module_dir, "/./")) != NULL) { | |
26e21efc WD |
761 | *p = '\0'; /* Temporary... */ |
762 | if (!(module_chdir = normalize_path(module_dir, True, NULL))) | |
763 | return path_failure(f_out, module_dir, False); | |
764 | *p = '/'; | |
765 | if (!(p = normalize_path(p + 2, True, &module_dirlen))) | |
766 | return path_failure(f_out, strstr(module_dir, "/./"), False); | |
767 | if (!(full_module_path = normalize_path(module_dir, False, NULL))) | |
768 | full_module_path = module_dir; | |
433c6753 WD |
769 | module_dir = p; |
770 | } else { | |
26e21efc WD |
771 | if (!(module_chdir = normalize_path(module_dir, False, NULL))) |
772 | return path_failure(f_out, module_dir, False); | |
773 | full_module_path = module_chdir; | |
774 | module_dir = "/"; | |
775 | module_dirlen = 1; | |
433c6753 | 776 | } |
26e21efc WD |
777 | } else { |
778 | if (!(module_chdir = normalize_path(module_dir, False, &module_dirlen))) | |
779 | return path_failure(f_out, module_dir, False); | |
780 | full_module_path = module_dir = module_chdir; | |
781 | } | |
0a9fbe17 | 782 | set_env_str("RSYNC_MODULE_PATH", full_module_path); |
2fe1feea WD |
783 | |
784 | if (module_dirlen == 1) { | |
e7bf7c01 | 785 | module_dirlen = 0; |
7842418b | 786 | set_filter_dir("/", 1); |
46bffd98 | 787 | } else |
33cbd577 | 788 | set_filter_dir(module_dir, module_dirlen); |
e7bf7c01 | 789 | |
f4184849 | 790 | p = lp_filter(module_id); |
c8fa85b2 | 791 | parse_filter_str(&daemon_filter_list, p, rule_template(FILTRULE_WORD_SPLIT), |
e63ff70e | 792 | XFLG_ABS_IF_SLASH | XFLG_DIR2WILD3); |
837cbad9 | 793 | |
f4184849 | 794 | p = lp_include_from(module_id); |
c8fa85b2 | 795 | parse_filter_file(&daemon_filter_list, p, rule_template(FILTRULE_INCLUDE), |
e63ff70e | 796 | XFLG_ABS_IF_SLASH | XFLG_DIR2WILD3 | XFLG_OLD_PREFIXES | XFLG_FATAL_ERRORS); |
cd64343a | 797 | |
f4184849 | 798 | p = lp_include(module_id); |
c8fa85b2 | 799 | parse_filter_str(&daemon_filter_list, p, |
e63ff70e WD |
800 | rule_template(FILTRULE_INCLUDE | FILTRULE_WORD_SPLIT), |
801 | XFLG_ABS_IF_SLASH | XFLG_DIR2WILD3 | XFLG_OLD_PREFIXES); | |
cd64343a | 802 | |
f4184849 | 803 | p = lp_exclude_from(module_id); |
c8fa85b2 | 804 | parse_filter_file(&daemon_filter_list, p, rule_template(0), |
e63ff70e | 805 | XFLG_ABS_IF_SLASH | XFLG_DIR2WILD3 | XFLG_OLD_PREFIXES | XFLG_FATAL_ERRORS); |
8f3a2d54 | 806 | |
f4184849 | 807 | p = lp_exclude(module_id); |
c8fa85b2 | 808 | parse_filter_str(&daemon_filter_list, p, rule_template(FILTRULE_WORD_SPLIT), |
e63ff70e | 809 | XFLG_ABS_IF_SLASH | XFLG_DIR2WILD3 | XFLG_OLD_PREFIXES); |
8f3a2d54 | 810 | |
6dc9b74b | 811 | log_init(1); |
1a016bfd | 812 | |
9d0d18b5 | 813 | #ifdef HAVE_PUTENV |
f4184849 | 814 | if ((*lp_early_exec(module_id) || *lp_prexfer_exec(module_id) || *lp_postxfer_exec(module_id)) |
a3377921 WD |
815 | && !getenv("RSYNC_NO_XFER_EXEC")) { |
816 | set_env_num("RSYNC_PID", (long)getpid()); | |
2fe1feea | 817 | |
c95ca2a2 WD |
818 | /* For post-xfer exec, fork a new process to run the rsync |
819 | * daemon while this process waits for the exit status and | |
820 | * runs the indicated command at that point. */ | |
f4184849 | 821 | if (*lp_postxfer_exec(module_id)) { |
9d0d18b5 WD |
822 | pid_t pid = fork(); |
823 | if (pid < 0) { | |
824 | rsyserr(FLOG, errno, "fork failed"); | |
825 | io_printf(f_out, "@ERROR: fork failed\n"); | |
826 | return -1; | |
827 | } | |
828 | if (pid) { | |
a3377921 | 829 | int status; |
ce571e64 WD |
830 | close(f_in); |
831 | if (f_out != f_in) | |
832 | close(f_out); | |
c95ca2a2 WD |
833 | if (wait_process(pid, &status, 0) < 0) |
834 | status = -1; | |
0a9fbe17 | 835 | set_env_num("RSYNC_RAW_STATUS", status); |
9d0d18b5 WD |
836 | if (WIFEXITED(status)) |
837 | status = WEXITSTATUS(status); | |
838 | else | |
839 | status = -1; | |
0a9fbe17 | 840 | set_env_num("RSYNC_EXIT_STATUS", status); |
f4184849 | 841 | if (shell_exec(lp_postxfer_exec(module_id)) < 0) |
94112924 | 842 | status = -1; |
9d0d18b5 WD |
843 | _exit(status); |
844 | } | |
845 | } | |
a3377921 WD |
846 | |
847 | /* For early exec, fork a child process to run the indicated | |
848 | * command and wait for it to exit. */ | |
f4184849 | 849 | if (*lp_early_exec(module_id)) { |
e16b2275 | 850 | int arg_fd; |
f4184849 | 851 | pid_t pid = start_pre_exec(lp_early_exec(module_id), &arg_fd, NULL); |
a3377921 WD |
852 | if (pid == (pid_t)-1) { |
853 | rsyserr(FLOG, errno, "early exec preparation failed"); | |
854 | io_printf(f_out, "@ERROR: early exec preparation failed\n"); | |
855 | return -1; | |
856 | } | |
e16b2275 | 857 | write_pre_exec_args(arg_fd, NULL, NULL, NULL, 1); |
a3377921 WD |
858 | if (finish_pre_exec("early exec", pid, -1) != NULL) { |
859 | rsyserr(FLOG, errno, "early exec failed"); | |
860 | io_printf(f_out, "@ERROR: early exec failed\n"); | |
861 | return -1; | |
862 | } | |
863 | } | |
864 | ||
c95ca2a2 WD |
865 | /* For pre-xfer exec, fork a child process to run the indicated |
866 | * command, though it first waits for the parent process to | |
867 | * send us the user's request via a pipe. */ | |
f4184849 WD |
868 | if (*lp_prexfer_exec(module_id)) { |
869 | pre_exec_pid = start_pre_exec(lp_prexfer_exec(module_id), &pre_exec_arg_fd, &pre_exec_error_fd); | |
a3377921 | 870 | if (pre_exec_pid == (pid_t)-1) { |
c95ca2a2 WD |
871 | rsyserr(FLOG, errno, "pre-xfer exec preparation failed"); |
872 | io_printf(f_out, "@ERROR: pre-xfer exec preparation failed\n"); | |
873 | return -1; | |
874 | } | |
c95ca2a2 | 875 | } |
9d0d18b5 WD |
876 | } |
877 | #endif | |
878 | ||
e16b2275 WD |
879 | if (early_input) { |
880 | free(early_input); | |
881 | early_input = NULL; | |
882 | } | |
883 | ||
8638dd48 | 884 | if (use_chroot) { |
b52c1d9d MP |
885 | /* |
886 | * XXX: The 'use chroot' flag is a fairly reliable | |
887 | * source of confusion, because it fails under two | |
888 | * important circumstances: running as non-root, | |
889 | * running on Win32 (or possibly others). On the | |
890 | * other hand, if you are running as root, then it | |
891 | * might be better to always use chroot. | |
892 | * | |
893 | * So, perhaps if we can't chroot we should just issue | |
894 | * a warning, unless a "require chroot" flag is set, | |
895 | * in which case we fail. | |
896 | */ | |
433c6753 WD |
897 | if (chroot(module_chdir)) { |
898 | rsyserr(FLOG, errno, "chroot %s failed", module_chdir); | |
68f40ebb | 899 | io_printf(f_out, "@ERROR: chroot failed\n"); |
8638dd48 DD |
900 | return -1; |
901 | } | |
433c6753 | 902 | module_chdir = module_dir; |
716baed7 DD |
903 | } |
904 | ||
26e21efc WD |
905 | if (!change_dir(module_chdir, CD_NORMAL)) |
906 | return path_failure(f_out, module_chdir, True); | |
881addc9 | 907 | if (module_dirlen || (!use_chroot && !*lp_daemon_chroot())) |
433c6753 WD |
908 | sanitize_paths = 1; |
909 | ||
f4184849 | 910 | if ((munge_symlinks = lp_munge_symlinks(module_id)) < 0) |
2fe1feea | 911 | munge_symlinks = !use_chroot || module_dirlen; |
9585b276 WD |
912 | if (munge_symlinks) { |
913 | STRUCT_STAT st; | |
41adbcec WD |
914 | char prefix[SYMLINK_PREFIX_LEN]; /* NOT +1 ! */ |
915 | strlcpy(prefix, SYMLINK_PREFIX, sizeof prefix); /* trim the trailing slash */ | |
916 | if (do_stat(prefix, &st) == 0 && S_ISDIR(st.st_mode)) { | |
917 | rprintf(FLOG, "Symlink munging is unsafe when a %s directory exists.\n", | |
918 | prefix); | |
9585b276 WD |
919 | io_printf(f_out, "@ERROR: daemon security issue -- contact admin\n", name); |
920 | exit_cleanup(RERR_UNSUPPORTED); | |
921 | } | |
922 | } | |
923 | ||
2a7355fb WD |
924 | if (gid_list.count) { |
925 | gid_t *gid_array = gid_list.items; | |
926 | if (setgid(gid_array[0])) { | |
927 | rsyserr(FLOG, errno, "setgid %ld failed", (long)gid_array[0]); | |
68f40ebb | 928 | io_printf(f_out, "@ERROR: setgid failed\n"); |
8638dd48 DD |
929 | return -1; |
930 | } | |
4f5b0756 | 931 | #ifdef HAVE_SETGROUPS |
7f367bb1 | 932 | /* Set the group(s) we want to be active. */ |
2a7355fb | 933 | if (setgroups(gid_list.count, gid_array)) { |
1732b6c0 | 934 | rsyserr(FLOG, errno, "setgroups failed"); |
6969ebcf WD |
935 | io_printf(f_out, "@ERROR: setgroups failed\n"); |
936 | return -1; | |
937 | } | |
938 | #endif | |
7f367bb1 WD |
939 | #if defined HAVE_INITGROUPS && !defined HAVE_GETGROUPLIST |
940 | /* pw is set if the user wants all the user's groups. */ | |
941 | if (pw && initgroups(pw->pw_name, pw->pw_gid) < 0) { | |
942 | rsyserr(FLOG, errno, "initgroups failed"); | |
943 | io_printf(f_out, "@ERROR: initgroups failed\n"); | |
944 | return -1; | |
945 | } | |
946 | #endif | |
17b849c9 | 947 | our_gid = MY_GID(); |
7f367bb1 | 948 | } |
3591c066 | 949 | |
7f367bb1 | 950 | if (set_uid) { |
cece2e3f WD |
951 | if (setuid(uid) < 0 |
952 | #ifdef HAVE_SETEUID | |
953 | || seteuid(uid) < 0 | |
954 | #endif | |
955 | ) { | |
7f367bb1 | 956 | rsyserr(FLOG, errno, "setuid %ld failed", (long)uid); |
68f40ebb | 957 | io_printf(f_out, "@ERROR: setuid failed\n"); |
8638dd48 DD |
958 | return -1; |
959 | } | |
960 | ||
17b849c9 WD |
961 | our_uid = MY_UID(); |
962 | am_root = (our_uid == 0); | |
3591c066 AT |
963 | } |
964 | ||
f4184849 WD |
965 | if (lp_temp_dir(module_id) && *lp_temp_dir(module_id)) { |
966 | tmpdir = lp_temp_dir(module_id); | |
fed1f3f4 WD |
967 | if (strlen(tmpdir) >= MAXPATHLEN - 10) { |
968 | rprintf(FLOG, | |
969 | "the 'temp dir' value for %s is WAY too long -- ignoring.\n", | |
970 | name); | |
971 | tmpdir = NULL; | |
972 | } | |
973 | } | |
974 | ||
68f40ebb | 975 | io_printf(f_out, "@RSYNCD: OK\n"); |
3591c066 | 976 | |
53936ef9 WD |
977 | read_args(f_in, name, line, sizeof line, rl_nulls, &argv, &argc, &request); |
978 | orig_argv = argv; | |
979 | ||
41adbcec WD |
980 | save_munge_symlinks = munge_symlinks; |
981 | ||
951e826b | 982 | reset_output_levels(); /* future verbosity is controlled by client options */ |
53936ef9 WD |
983 | ret = parse_arguments(&argc, (const char ***) &argv); |
984 | if (protect_args && ret) { | |
985 | orig_early_argv = orig_argv; | |
986 | protect_args = 2; | |
987 | read_args(f_in, name, line, sizeof line, 1, &argv, &argc, &request); | |
988 | orig_argv = argv; | |
989 | ret = parse_arguments(&argc, (const char ***) &argv); | |
990 | } else | |
991 | orig_early_argv = NULL; | |
3591c066 | 992 | |
565cde84 WD |
993 | /* The default is to use the user's setting unless the module sets True or False. */ |
994 | if (lp_open_noatime(module_id) >= 0) | |
995 | open_noatime = lp_open_noatime(module_id); | |
996 | ||
41adbcec | 997 | munge_symlinks = save_munge_symlinks; /* The client mustn't control this. */ |
f0e670b4 | 998 | |
c0268d92 WD |
999 | if (am_daemon > 0) |
1000 | msgs2stderr = 0; /* A non-rsh-run daemon doesn't have stderr for msgs. */ | |
41adbcec | 1001 | |
141c6265 | 1002 | if (pre_exec_pid) { |
e16b2275 | 1003 | write_pre_exec_args(pre_exec_arg_fd, request, orig_early_argv, orig_argv, 0); |
a3377921 | 1004 | err_msg = finish_pre_exec("pre-xfer exec", pre_exec_pid, pre_exec_error_fd); |
141c6265 | 1005 | } |
c95ca2a2 | 1006 | |
53936ef9 WD |
1007 | if (orig_early_argv) |
1008 | free(orig_early_argv); | |
1009 | ||
875a13b4 | 1010 | am_server = 1; /* Don't let someone try to be tricky. */ |
53936ef9 | 1011 | quiet = 0; |
3162ea6f WD |
1012 | if (lp_ignore_errors(module_id)) |
1013 | ignore_errors = 1; | |
5223b786 WD |
1014 | if (write_batch < 0) |
1015 | dry_run = 1; | |
3591c066 | 1016 | |
f4184849 | 1017 | if (lp_fake_super(module_id)) { |
cbbd8e2e WD |
1018 | if (preserve_xattrs > 1) |
1019 | preserve_xattrs = 1; | |
9439c0cb | 1020 | am_root = -1; |
cbbd8e2e | 1021 | } else if (am_root < 0) /* Treat --fake-super from client as --super. */ |
9439c0cb WD |
1022 | am_root = 2; |
1023 | ||
7c2a9e76 WD |
1024 | if (filesfrom_fd == 0) |
1025 | filesfrom_fd = f_in; | |
1026 | ||
7b372642 | 1027 | if (request) { |
97cb8dc2 | 1028 | if (*auth_user) { |
9e5a5ddb WD |
1029 | rprintf(FLOG, "rsync %s %s from %s@%s (%s)\n", |
1030 | am_sender ? "on" : "to", | |
97cb8dc2 | 1031 | request, auth_user, host, addr); |
d0d56395 | 1032 | } else { |
9e5a5ddb WD |
1033 | rprintf(FLOG, "rsync %s %s from %s (%s)\n", |
1034 | am_sender ? "on" : "to", | |
d0d56395 AT |
1035 | request, host, addr); |
1036 | } | |
7b372642 AT |
1037 | free(request); |
1038 | } | |
1039 | ||
15b7b73d | 1040 | #ifndef DEBUG |
3591c066 | 1041 | /* don't allow the logs to be flooded too fast */ |
f4184849 | 1042 | limit_output_verbosity(lp_max_verbosity(module_id)); |
0199b05f | 1043 | #endif |
3591c066 | 1044 | |
e63ff70e | 1045 | if (protocol_version < 23 && (protocol_version == 22 || am_sender)) |
d8587b46 | 1046 | io_start_multiplex_out(f_out); |
c95ca2a2 | 1047 | else if (!ret || err_msg) { |
1732b6c0 WD |
1048 | /* We have to get I/O multiplexing started so that we can |
1049 | * get the error back to the client. This means getting | |
1050 | * the protocol setup finished first in later versions. */ | |
1051 | setup_protocol(f_out, f_in); | |
b03c719f WD |
1052 | if (!am_sender) { |
1053 | /* Since we failed in our option parsing, we may not | |
1054 | * have finished parsing that the client sent us a | |
1055 | * --files-from option, so look for it manually. | |
1056 | * Without this, the socket would be in the wrong | |
1057 | * state for the upcoming error message. */ | |
1058 | if (!files_from) { | |
1059 | int i; | |
1060 | for (i = 0; i < argc; i++) { | |
1061 | if (strncmp(argv[i], "--files-from", 12) == 0) { | |
1062 | files_from = ""; | |
1063 | break; | |
1064 | } | |
1065 | } | |
1066 | } | |
1067 | if (files_from) | |
1068 | write_byte(f_out, 0); | |
1069 | } | |
d8587b46 | 1070 | io_start_multiplex_out(f_out); |
554e0a8d | 1071 | } |
15b7b73d | 1072 | |
c95ca2a2 | 1073 | if (!ret || err_msg) { |
820f7a7b WD |
1074 | if (err_msg) { |
1075 | while ((p = strchr(err_msg, '\n')) != NULL) { | |
1076 | int len = p - err_msg + 1; | |
1077 | rwrite(FERROR, err_msg, len, 0); | |
1078 | err_msg += len; | |
1079 | } | |
1080 | if (*err_msg) | |
1081 | rprintf(FERROR, "%s\n", err_msg); | |
f60bd811 | 1082 | io_flush(MSG_FLUSH); |
820f7a7b | 1083 | } else |
c95ca2a2 | 1084 | option_error(); |
7e561438 | 1085 | msleep(400); |
4a7144ee | 1086 | exit_cleanup(RERR_UNSUPPORTED); |
41979ff8 AT |
1087 | } |
1088 | ||
15dbffc2 | 1089 | #ifdef ICONV_OPTION |
0b52f94d WD |
1090 | if (!iconv_opt) { |
1091 | if (ic_send != (iconv_t)-1) { | |
1092 | iconv_close(ic_send); | |
1093 | ic_send = (iconv_t)-1; | |
1094 | } | |
1095 | if (ic_recv != (iconv_t)-1) { | |
1096 | iconv_close(ic_recv); | |
1097 | ic_recv = (iconv_t)-1; | |
1098 | } | |
1099 | } | |
15dbffc2 | 1100 | #endif |
0b52f94d WD |
1101 | |
1102 | if (!numeric_ids | |
f4184849 | 1103 | && (use_chroot ? lp_numeric_ids(module_id) != False : lp_numeric_ids(module_id) == True)) |
0b52f94d WD |
1104 | numeric_ids = -1; /* Set --numeric-ids w/o breaking protocol. */ |
1105 | ||
f4184849 WD |
1106 | if (lp_timeout(module_id) && (!io_timeout || lp_timeout(module_id) < io_timeout)) |
1107 | set_io_timeout(lp_timeout(module_id)); | |
81791cfc | 1108 | |
f041b025 WD |
1109 | /* If we have some incoming/outgoing chmod changes, append them to |
1110 | * any user-specified changes (making our changes have priority). | |
1111 | * We also get a pointer to just our changes so that a receiver | |
1112 | * process can use them separately if --perms wasn't specified. */ | |
aaccaa88 | 1113 | if (am_sender) |
f4184849 | 1114 | p = lp_outgoing_chmod(module_id); |
aaccaa88 | 1115 | else |
f4184849 | 1116 | p = lp_incoming_chmod(module_id); |
8840ec0f | 1117 | if (*p && !(daemon_chmod_modes = parse_chmod(p, &chmod_modes))) { |
aaccaa88 WD |
1118 | rprintf(FLOG, "Invalid \"%sing chmod\" directive: %s\n", |
1119 | am_sender ? "outgo" : "incom", p); | |
1120 | } | |
730df9d2 | 1121 | |
c9dc1300 | 1122 | start_server(f_in, f_out, argc, argv); |
3591c066 AT |
1123 | |
1124 | return 0; | |
1125 | } | |
1126 | ||
7a6421fa AT |
1127 | /* send a list of available modules to the client. Don't list those |
1128 | with "list = False". */ | |
3591c066 AT |
1129 | static void send_listing(int fd) |
1130 | { | |
b583594a | 1131 | int n = lp_num_modules(); |
3591c066 | 1132 | int i; |
063393d6 | 1133 | |
c0422cea | 1134 | for (i = 0; i < n; i++) { |
3591c066 | 1135 | if (lp_list(i)) |
4a7144ee | 1136 | io_printf(fd, "%-15s\t%s\n", lp_name(i), lp_comment(i)); |
c0422cea | 1137 | } |
8f04bb36 | 1138 | |
daa598df | 1139 | if (protocol_version >= 25) |
063393d6 | 1140 | io_printf(fd,"@RSYNCD: EXIT\n"); |
3591c066 AT |
1141 | } |
1142 | ||
d1c06c21 WD |
1143 | static int load_config(int globals_only) |
1144 | { | |
1145 | if (!config_file) { | |
c0268d92 | 1146 | if (am_daemon < 0 && am_root <= 0) |
d1c06c21 WD |
1147 | config_file = RSYNCD_USERCONF; |
1148 | else | |
1149 | config_file = RSYNCD_SYSCONF; | |
1150 | } | |
1151 | return lp_load(config_file, globals_only); | |
1152 | } | |
1153 | ||
68f40ebb | 1154 | /* this is called when a connection is established to a client |
3591c066 AT |
1155 | and we want to start talking. The setup of the system is done from |
1156 | here */ | |
68f40ebb | 1157 | int start_daemon(int f_in, int f_out) |
3591c066 | 1158 | { |
20accf4d | 1159 | char line[1024]; |
df694f72 | 1160 | const char *addr, *host; |
881addc9 | 1161 | char *p; |
c0422cea | 1162 | int i; |
4cdf25e4 | 1163 | |
c0268d92 WD |
1164 | /* At this point, am_server is only set for a daemon started via rsh. |
1165 | * Because am_server gets forced on soon, we'll set am_daemon to -1 as | |
1166 | * a flag that can be checked later on to distinguish a normal daemon | |
1167 | * from an rsh-run daemon. */ | |
1168 | if (am_server) | |
1169 | am_daemon = -1; | |
1170 | ||
da3478b2 WD |
1171 | io_set_sock_fds(f_in, f_out); |
1172 | ||
374c3e12 WD |
1173 | /* We must load the config file before calling any function that |
1174 | * might cause log-file output to occur. This ensures that the | |
1175 | * "log file" param gets honored for the 2 non-forked use-cases | |
08e0a629 | 1176 | * (when rsync is run by init and run by a remote shell). */ |
d1c06c21 | 1177 | if (!load_config(0)) |
65417579 | 1178 | exit_cleanup(RERR_SYNTAX); |
3591c066 | 1179 | |
249e28c7 | 1180 | if (lp_proxy_protocol() && !read_proxy_protocol_header(f_in)) |
cff0764b WD |
1181 | return -1; |
1182 | ||
881addc9 WD |
1183 | p = lp_daemon_chroot(); |
1184 | if (*p) { | |
1185 | log_init(0); /* Make use we've initialized syslog before chrooting. */ | |
1186 | if (chroot(p) < 0 || chdir("/") < 0) { | |
1187 | rsyserr(FLOG, errno, "daemon chroot %s failed", p); | |
1188 | return -1; | |
1189 | } | |
1190 | } | |
1191 | p = lp_daemon_gid(); | |
1192 | if (*p) { | |
1193 | gid_t gid; | |
1194 | if (!group_to_gid(p, &gid, True)) { | |
1195 | rprintf(FLOG, "Invalid daemon gid: %s\n", p); | |
1196 | return -1; | |
1197 | } | |
1198 | if (setgid(gid) < 0) { | |
1199 | rsyserr(FLOG, errno, "Unable to set group to daemon gid %ld", (long)gid); | |
1200 | return -1; | |
1201 | } | |
17b849c9 | 1202 | our_gid = MY_GID(); |
881addc9 WD |
1203 | } |
1204 | p = lp_daemon_uid(); | |
1205 | if (*p) { | |
1206 | uid_t uid; | |
1207 | if (!user_to_uid(p, &uid, True)) { | |
1208 | rprintf(FLOG, "Invalid daemon uid: %s\n", p); | |
1209 | return -1; | |
1210 | } | |
1211 | if (setuid(uid) < 0) { | |
1212 | rsyserr(FLOG, errno, "Unable to set user to daemon uid %ld", (long)uid); | |
1213 | return -1; | |
1214 | } | |
17b849c9 WD |
1215 | our_uid = MY_UID(); |
1216 | am_root = (our_uid == 0); | |
881addc9 WD |
1217 | } |
1218 | ||
374c3e12 | 1219 | addr = client_addr(f_in); |
cff0764b | 1220 | host = lp_reverse_lookup(-1) ? client_name(addr) : undetermined_hostname; |
374c3e12 | 1221 | rprintf(FLOG, "connect from %s (%s)\n", host, addr); |
91d324b4 | 1222 | |
c0268d92 | 1223 | if (am_daemon > 0) { |
68f40ebb | 1224 | set_socket_options(f_in, "SO_KEEPALIVE"); |
68f40ebb WD |
1225 | set_nonblocking(f_in); |
1226 | } | |
3591c066 | 1227 | |
7909e65f | 1228 | if (exchange_protocols(f_in, f_out, line, sizeof line, 0) < 0) |
91eee594 | 1229 | return -1; |
91eee594 | 1230 | |
c0422cea | 1231 | line[0] = 0; |
5ebe9a46 | 1232 | if (!read_line_old(f_in, line, sizeof line, 0)) |
c0422cea | 1233 | return -1; |
3591c066 | 1234 | |
e16b2275 WD |
1235 | if (strncmp(line, EARLY_INPUT_CMD, EARLY_INPUT_CMDLEN) == 0) { |
1236 | early_input_len = strtol(line + EARLY_INPUT_CMDLEN, NULL, 10); | |
a7c1690d | 1237 | if (early_input_len <= 0 || early_input_len > BIGPATHBUFLEN) { |
e16b2275 WD |
1238 | io_printf(f_out, "@ERROR: invalid early_input length\n"); |
1239 | return -1; | |
1240 | } | |
11eb67ee | 1241 | early_input = new_array(char, early_input_len); |
e16b2275 WD |
1242 | read_buf(f_in, early_input, early_input_len); |
1243 | ||
1244 | if (!read_line_old(f_in, line, sizeof line, 0)) | |
1245 | return -1; | |
1246 | } | |
1247 | ||
c0422cea | 1248 | if (!*line || strcmp(line, "#list") == 0) { |
b3e15181 WD |
1249 | rprintf(FLOG, "module-list request from %s (%s)\n", |
1250 | host, addr); | |
c0422cea WD |
1251 | send_listing(f_out); |
1252 | return -1; | |
1253 | } | |
3591c066 | 1254 | |
c0422cea WD |
1255 | if (*line == '#') { |
1256 | /* it's some sort of command that I don't understand */ | |
1257 | io_printf(f_out, "@ERROR: Unknown command '%s'\n", line); | |
1258 | return -1; | |
1259 | } | |
3591c066 | 1260 | |
c0422cea | 1261 | if ((i = lp_number(line)) < 0) { |
c0422cea WD |
1262 | rprintf(FLOG, "unknown module '%s' tried from %s (%s)\n", |
1263 | line, host, addr); | |
1264 | io_printf(f_out, "@ERROR: Unknown module '%s'\n", line); | |
1265 | return -1; | |
3591c066 AT |
1266 | } |
1267 | ||
d749eb68 WD |
1268 | #ifdef HAVE_SIGACTION |
1269 | sigact.sa_flags = SA_NOCLDSTOP; | |
1270 | #endif | |
1271 | SIGACTION(SIGCHLD, remember_children); | |
1272 | ||
439a198d | 1273 | return rsync_module(f_in, f_out, i, addr, host); |
3591c066 AT |
1274 | } |
1275 | ||
dd589118 | 1276 | static void create_pid_file(void) |
a1d2685b WD |
1277 | { |
1278 | char *pid_file = lp_pid_file(); | |
b177311a WD |
1279 | char pidbuf[32]; |
1280 | STRUCT_STAT st1, st2; | |
1281 | char *fail = NULL; | |
a1d2685b WD |
1282 | |
1283 | if (!pid_file || !*pid_file) | |
1284 | return; | |
1285 | ||
5d7b71b7 WD |
1286 | #ifdef O_NOFOLLOW |
1287 | #define SAFE_OPEN_FLAGS (O_CREAT|O_NOFOLLOW) | |
1288 | #else | |
1289 | #define SAFE_OPEN_FLAGS (O_CREAT) | |
1290 | #endif | |
1291 | ||
b177311a WD |
1292 | /* These tests make sure that a temp-style lock dir is handled safely. */ |
1293 | st1.st_mode = 0; | |
1294 | if (do_lstat(pid_file, &st1) == 0 && !S_ISREG(st1.st_mode) && unlink(pid_file) < 0) | |
1295 | fail = "unlink"; | |
5d7b71b7 | 1296 | else if ((pid_file_fd = do_open(pid_file, O_RDWR|SAFE_OPEN_FLAGS, 0664)) < 0) |
b177311a WD |
1297 | fail = S_ISREG(st1.st_mode) ? "open" : "create"; |
1298 | else if (!lock_range(pid_file_fd, 0, 4)) | |
1299 | fail = "lock"; | |
1300 | else if (do_fstat(pid_file_fd, &st1) < 0) | |
1301 | fail = "fstat opened"; | |
2c6f0581 | 1302 | else if (st1.st_size > (int)sizeof pidbuf) |
b177311a WD |
1303 | fail = "find small"; |
1304 | else if (do_lstat(pid_file, &st2) < 0) | |
1305 | fail = "lstat"; | |
1306 | else if (!S_ISREG(st1.st_mode)) | |
1307 | fail = "avoid file overwrite race for"; | |
1308 | else if (st1.st_dev != st2.st_dev || st1.st_ino != st2.st_ino) | |
1309 | fail = "verify stat info for"; | |
1310 | #ifdef HAVE_FTRUNCATE | |
1311 | else if (do_ftruncate(pid_file_fd, 0) < 0) | |
1312 | fail = "truncate"; | |
1313 | #endif | |
1314 | else { | |
1315 | pid_t pid = getpid(); | |
1316 | int len = snprintf(pidbuf, sizeof pidbuf, "%d\n", (int)pid); | |
1317 | #ifndef HAVE_FTRUNCATE | |
1318 | /* What can we do with a too-long file and no truncate? I guess we'll add extra newlines. */ | |
2c6f0581 | 1319 | while (len < st1.st_size) /* We already verified that st_size chars fits in the buffer. */ |
b177311a WD |
1320 | pidbuf[len++] = '\n'; |
1321 | /* We don't need the buffer to end in a '\0' (and we may not have room to add it). */ | |
1322 | #endif | |
1323 | if (write(pid_file_fd, pidbuf, len) != len) | |
1324 | fail = "write"; | |
1325 | cleanup_set_pid(pid); /* Mark the file for removal on exit, even if the write failed. */ | |
1326 | } | |
1327 | ||
1328 | if (fail) { | |
1329 | char msg[1024]; | |
1330 | snprintf(msg, sizeof msg, "failed to %s pid file %s: %s\n", | |
1331 | fail, pid_file, strerror(errno)); | |
1332 | fputs(msg, stderr); | |
1333 | rprintf(FLOG, "%s", msg); | |
a1d2685b WD |
1334 | exit_cleanup(RERR_FILEIO); |
1335 | } | |
b177311a WD |
1336 | |
1337 | /* The file is left open so that the lock remains valid. It is closed in our forked child procs. */ | |
a1d2685b WD |
1338 | } |
1339 | ||
1340 | /* Become a daemon, discarding the controlling terminal. */ | |
1341 | static void become_daemon(void) | |
3591c066 | 1342 | { |
a1d2685b WD |
1343 | int i; |
1344 | pid_t pid = fork(); | |
1345 | ||
1346 | if (pid) { | |
dd589118 WD |
1347 | if (pid < 0) { |
1348 | fprintf(stderr, "failed to fork: %s\n", strerror(errno)); | |
1349 | exit_cleanup(RERR_FILEIO); | |
1350 | } | |
a1d2685b WD |
1351 | _exit(0); |
1352 | } | |
1a016bfd | 1353 | |
dd589118 WD |
1354 | create_pid_file(); |
1355 | ||
a1d2685b WD |
1356 | /* detach from the terminal */ |
1357 | #ifdef HAVE_SETSID | |
1358 | setsid(); | |
1359 | #elif defined TIOCNOTTY | |
1360 | i = open("/dev/tty", O_RDWR); | |
1361 | if (i >= 0) { | |
1362 | ioctl(i, (int)TIOCNOTTY, (char *)0); | |
1363 | close(i); | |
1364 | } | |
1365 | #endif | |
1366 | /* make sure that stdin, stdout an stderr don't stuff things | |
1367 | * up (library functions, for example) */ | |
1368 | for (i = 0; i < 3; i++) { | |
1369 | close(i); | |
1370 | open("/dev/null", O_RDWR); | |
1371 | } | |
1372 | } | |
1373 | ||
1374 | int daemon_main(void) | |
1375 | { | |
3591c066 | 1376 | if (is_a_socket(STDIN_FILENO)) { |
41979ff8 AT |
1377 | int i; |
1378 | ||
1379 | /* we are running via inetd - close off stdout and | |
4a7144ee WD |
1380 | * stderr so that library functions (and getopt) don't |
1381 | * try to use them. Redirect them to /dev/null */ | |
2e94e70e | 1382 | for (i = 1; i < 3; i++) { |
4a7144ee | 1383 | close(i); |
41979ff8 AT |
1384 | open("/dev/null", O_RDWR); |
1385 | } | |
3eb38818 | 1386 | |
68f40ebb | 1387 | return start_daemon(STDIN_FILENO, STDIN_FILENO); |
3591c066 AT |
1388 | } |
1389 | ||
d1c06c21 | 1390 | if (!load_config(1)) { |
a1d2685b | 1391 | fprintf(stderr, "Failed to parse config file: %s\n", config_file); |
65417579 | 1392 | exit_cleanup(RERR_SYNTAX); |
a1d2685b | 1393 | } |
2206abf8 | 1394 | set_dparams(0); |
a1d2685b WD |
1395 | |
1396 | if (no_detach) | |
dd589118 | 1397 | create_pid_file(); |
a1d2685b WD |
1398 | else |
1399 | become_daemon(); | |
f9e940ef | 1400 | |
0c56b1ad WD |
1401 | if (rsync_port == 0 && (rsync_port = lp_rsync_port()) == 0) |
1402 | rsync_port = RSYNC_PORT; | |
3dfe6e97 | 1403 | if (bind_address == NULL && *lp_bind_address()) |
986aaaaa | 1404 | bind_address = lp_bind_address(); |
0c56b1ad | 1405 | |
6dc9b74b | 1406 | log_init(0); |
f9e940ef | 1407 | |
9e5a5ddb | 1408 | rprintf(FLOG, "rsyncd version %s starting, listening on port %d\n", |
4a7144ee WD |
1409 | RSYNC_VERSION, rsync_port); |
1410 | /* TODO: If listening on a particular address, then show that | |
0a04a80d | 1411 | * address too. In fact, why not just do getnameinfo on the |
4a7144ee | 1412 | * local address??? */ |
e42c9458 | 1413 | |
8ef4ffd6 AT |
1414 | start_accept_loop(rsync_port, start_daemon); |
1415 | return -1; | |
3591c066 | 1416 | } |