2 * $Id: main.c,v 1.9 2001-06-20 18:33:04 rufustfirefly Exp $
4 * Copyright (c) 1990,1993 Regents of The University of Michigan.
5 * All Rights Reserved. See COPYRIGHT.
10 #endif /* HAVE_CONFIG_H */
17 #endif /* HAVE_UNISTD_H */
20 #endif /* HAVE_FCNTL_H */
23 #include <sys/types.h>
25 #include <sys/param.h>
27 #include <sys/syslog.h>
29 #include <sys/socket.h>
33 #include <netatalk/endian.h>
34 #include <netatalk/at.h>
35 #include <atalk/compat.h>
36 #include <atalk/dsi.h>
37 #include <atalk/atp.h>
38 #include <atalk/asp.h>
39 #include <atalk/afp.h>
40 #include <atalk/adouble.h>
41 #include <atalk/paths.h>
42 #include <atalk/util.h>
43 #include <atalk/server_child.h>
46 #include "afp_config.h"
52 #include <sys/security.h>
58 #include "parse_mtab.h"
61 unsigned char nologin = 0;
63 struct afp_options default_options;
64 static AFPConfig *configs;
65 static server_child *server_children;
66 static fd_set save_rfds;
68 static void afp_exit(const int i)
70 server_unlock(default_options.pidfile);
74 static void afp_goaway(int sig)
82 syslog( LOG_INFO, "shutting down on signal %d", sig );
85 /* w/ a configuration file, we can force a re-read if we want */
87 if ((nologin + 1) & 1) {
90 syslog(LOG_INFO, "re-reading configuration file");
91 for (config = configs; config; config = config->next)
92 if (config->server_cleanup)
93 config->server_cleanup(config);
95 configfree(configs, NULL);
96 if (!(configs = configinit(&default_options))) {
97 syslog(LOG_ERR, "config re-read: no servers configured");
101 for (config = configs; config; config = config->next) {
104 FD_SET(config->fd, &save_rfds);
107 syslog(LOG_INFO, "disallowing logins");
112 syslog( LOG_ERR, "afp_goaway: bad signal" );
114 if ( sig == SIGTERM ) {
117 for (config = configs; config; config = config->next)
118 if (config->server_cleanup)
119 config->server_cleanup(config);
126 static void child_handler()
128 server_child_handler(server_children);
141 set_auth_parameters( ac, av );
144 umask( 0 ); /* so inherited file permissions work right */
146 afp_options_init(&default_options);
147 if (!afp_options_parse(ac, av, &default_options))
150 switch(server_lock("afpd", default_options.pidfile,
151 default_options.flags & OPTION_DEBUG)) {
156 default: /* server */
161 /* if we are going to use afpd.mtab, load the file */
162 afpd_mount_table = afpd_mtab_parse ( AFPD_MTAB_FILE );
163 #endif /* DID_MTAB */
165 /* install child handler for asp and dsi. we do this before afp_goaway
166 * as afp_goaway references stuff from here.
167 * XXX: this should really be setup after the initial connections. */
168 if (!(server_children = server_child_alloc(default_options.connections,
170 syslog(LOG_ERR, "main: server_child alloc: %m");
174 memset(&sv, 0, sizeof(sv));
175 sv.sa_handler = child_handler;
176 sigemptyset( &sv.sa_mask );
177 sv.sa_flags = SA_RESTART;
178 if ( sigaction( SIGCHLD, &sv, 0 ) < 0 ) {
179 syslog( LOG_ERR, "main: sigaction: %m" );
183 sv.sa_handler = afp_goaway;
184 sigemptyset( &sv.sa_mask );
185 sigaddset(&sv.sa_mask, SIGHUP);
186 sigaddset(&sv.sa_mask, SIGTERM);
187 sv.sa_flags = SA_RESTART;
188 if ( sigaction( SIGHUP, &sv, 0 ) < 0 ) {
189 syslog( LOG_ERR, "main: sigaction: %m" );
192 if ( sigaction( SIGTERM, &sv, 0 ) < 0 ) {
193 syslog( LOG_ERR, "main: sigaction: %m" );
197 /* afpd.conf: not in config file: lockfile, connections, configfile
198 * preference: command-line provides defaults.
199 * config file over-writes defaults.
201 * we also need to make sure that killing afpd during startup
202 * won't leave any lingering registered names around.
206 sigaddset(&sigs, SIGHUP);
207 sigaddset(&sigs, SIGTERM);
208 sigprocmask(SIG_BLOCK, &sigs, NULL);
209 if (!(configs = configinit(&default_options))) {
210 syslog(LOG_ERR, "main: no servers configured: %m\n");
213 sigprocmask(SIG_UNBLOCK, &sigs, NULL);
215 /* watch atp and dsi sockets. */
217 for (config = configs; config; config = config->next) {
218 if (config->fd < 0) /* for proxies */
220 FD_SET(config->fd, &save_rfds);
223 /* wait for an appleshare connection. parent remains in the loop
224 * while the children get handled by afp_over_{asp,dsi}. this is
225 * currently vulnerable to a denial-of-service attack if a
226 * connection is made without an actual login attempt being made
227 * afterwards. establishing timeouts for logins is a possible
231 if (select(FD_SETSIZE, &rfds, NULL, NULL, NULL) < 0) {
234 syslog(LOG_ERR, "main: can't wait for input: %m");
238 for (config = configs; config; config = config->next) {
241 if (FD_ISSET(config->fd, &rfds))
242 config->server_start(config, configs, server_children);