2 Copyright (C) Andrew Tridgell 1998
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
19 /* the socket based protocol for setting up a connection wit rsyncd */
26 extern int rsync_port;
28 int start_socket_client(char *host, char *path, int argc, char *argv[])
31 char *sargs[MAX_ARGS];
37 fd = open_socket_out(host, rsync_port);
42 server_options(sargs,&sargc);
47 sargs[sargc++] = path;
51 if (!read_line(fd, line, sizeof(line)-1)) {
55 if (sscanf(line,"@RSYNCD: %d", &version) != 1) {
59 io_printf(fd,"@RSYNCD: %d\n", PROTOCOL_VERSION);
63 io_printf(fd,"%s\n",path);
67 if (!read_line(fd, line, sizeof(line)-1)) {
70 if (strcmp(line,"@RSYNCD: OK") == 0) break;
71 rprintf(FINFO,"%s\n", line);
74 for (i=0;i<sargc;i++) {
75 io_printf(fd,"%s\n", sargs[i]);
81 if (!read_line(fd, line, sizeof(line)-1)) {
84 rprintf(FINFO,"%s\n", line);
88 return client_run(fd, fd, -1, argc, argv);
93 static int rsync_module(int fd, int i)
103 rprintf(FINFO,"rsync on module %s from %s (%s)\n",
104 lp_name(i), client_name(fd), client_addr(fd));
112 if (!name_to_uid(p, &uid)) {
114 rprintf(FERROR,"Invalid uid %s\n", p);
121 if (!name_to_gid(p, &gid)) {
123 rprintf(FERROR,"Invalid gid %s\n", p);
129 if (chroot(lp_path(i))) {
130 io_printf(fd,"@ERROR: chroot failed\n");
135 io_printf(fd,"@ERROR: chdir failed\n");
140 io_printf(fd,"@ERROR: setgid failed\n");
145 io_printf(fd,"@ERROR: setuid failed\n");
149 io_printf(fd,"@RSYNCD: OK\n");
151 argv[argc++] = "rsyncd";
154 if (!read_line(fd, line, sizeof(line)-1)) {
160 argv[argc] = strdup(line);
166 if (argc == MAX_ARGS) {
171 parse_arguments(argc, argv);
173 /* don't allow the logs to be flooded too fast */
174 if (verbose > 1) verbose = 1;
177 argp = argv + optind;
180 start_server(fd, fd, argc, argp);
185 /* send a list of available modules to the client. Don't list those
186 with "list = False". */
187 static void send_listing(int fd)
189 int n = lp_numservices();
194 io_printf(fd, "%-15s\t%s\n", lp_name(i), lp_comment(i));
197 /* this is called when a socket connection is established to a client
198 and we want to start talking. The setup of the system is done from
200 static int start_daemon(int fd)
207 set_socket_options(fd,"SO_KEEPALIVE");
209 io_printf(fd,"@RSYNCD: %d\n", PROTOCOL_VERSION);
211 if (!read_line(fd, line, sizeof(line)-1)) {
215 if (sscanf(line,"@RSYNCD: %d", &version) != 1) {
219 motd = lp_motd_file();
221 FILE *f = fopen(motd,"r");
222 while (f && !feof(f)) {
223 int len = fread(line, 1, sizeof(line)-1, f);
226 io_printf(fd,"%s", line);
236 if (!read_line(fd, line, sizeof(line)-1)) {
240 if (!*line || strcmp(line,"#list")==0) {
246 /* it's some sort of command that I don't understand */
247 io_printf(fd,"ERROR: Unknown command '%s'\n", line);
253 io_printf(fd,"ERROR: Unknown module '%s'\n", line);
258 return rsync_module(fd, i);
262 int daemon_main(void)
264 extern char *config_file;
266 if (!lp_load(config_file)) {
270 if (is_a_socket(STDIN_FILENO)) {
271 /* we are running via inetd */
272 return start_daemon(STDIN_FILENO);
277 start_accept_loop(rsync_port, start_daemon);