2 * $Id: main.c,v 1.6 2001-05-22 19:13:36 rufustfirefly Exp $
4 * Copyright (c) 1990,1993 Regents of The University of Michigan.
5 * All Rights Reserved. See COPYRIGHT.
19 #include <sys/types.h>
21 #include <sys/param.h>
23 #include <sys/syslog.h>
25 #include <sys/socket.h>
29 #include <netatalk/endian.h>
30 #include <netatalk/at.h>
31 #include <atalk/compat.h>
32 #include <atalk/dsi.h>
33 #include <atalk/atp.h>
34 #include <atalk/asp.h>
35 #include <atalk/afp.h>
36 #include <atalk/adouble.h>
37 #include <atalk/paths.h>
38 #include <atalk/util.h>
39 #include <atalk/server_child.h>
42 #include "afp_config.h"
48 #include <sys/security.h>
53 unsigned char nologin = 0;
55 struct afp_options default_options;
56 static AFPConfig *configs;
57 static server_child *server_children;
58 static fd_set save_rfds;
61 int addr_net, addr_node, addr_uid;
65 static void afp_exit(const int i)
67 server_unlock(default_options.pidfile);
71 static void afp_goaway(int sig)
79 syslog( LOG_INFO, "shutting down on signal %d", sig );
82 /* w/ a configuration file, we can force a re-read if we want */
84 if ((nologin + 1) & 1) {
87 syslog(LOG_INFO, "re-reading configuration file");
88 for (config = configs; config; config = config->next)
89 if (config->server_cleanup)
90 config->server_cleanup(config);
92 configfree(configs, NULL);
93 if (!(configs = configinit(&default_options))) {
94 syslog(LOG_ERR, "config re-read: no servers configured");
98 for (config = configs; config; config = config->next) {
101 FD_SET(config->fd, &save_rfds);
104 syslog(LOG_INFO, "disallowing logins");
109 syslog( LOG_ERR, "afp_goaway: bad signal" );
111 if ( sig == SIGTERM ) {
114 for (config = configs; config; config = config->next)
115 if (config->server_cleanup)
116 config->server_cleanup(config);
123 static void child_handler()
125 server_child_handler(server_children);
138 set_auth_parameters( ac, av );
141 umask( 0 ); /* so inherited file permissions work right */
143 afp_options_init(&default_options);
144 if (!afp_options_parse(ac, av, &default_options))
147 switch(server_lock("afpd", default_options.pidfile,
148 default_options.flags & OPTION_DEBUG)) {
153 default: /* server */
157 /* install child handler for asp and dsi. we do this before afp_goaway
158 * as afp_goaway references stuff from here.
159 * XXX: this should really be setup after the initial connections. */
160 if (!(server_children = server_child_alloc(default_options.connections,
162 syslog(LOG_ERR, "main: server_child alloc: %m");
166 memset(&sv, 0, sizeof(sv));
167 sv.sa_handler = child_handler;
168 sigemptyset( &sv.sa_mask );
169 sv.sa_flags = SA_RESTART;
170 if ( sigaction( SIGCHLD, &sv, 0 ) < 0 ) {
171 syslog( LOG_ERR, "main: sigaction: %m" );
175 sv.sa_handler = afp_goaway;
176 sigemptyset( &sv.sa_mask );
177 sigaddset(&sv.sa_mask, SIGHUP);
178 sigaddset(&sv.sa_mask, SIGTERM);
179 sv.sa_flags = SA_RESTART;
180 if ( sigaction( SIGHUP, &sv, 0 ) < 0 ) {
181 syslog( LOG_ERR, "main: sigaction: %m" );
184 if ( sigaction( SIGTERM, &sv, 0 ) < 0 ) {
185 syslog( LOG_ERR, "main: sigaction: %m" );
189 /* afpd.conf: not in config file: lockfile, connections, configfile
190 * preference: command-line provides defaults.
191 * config file over-writes defaults.
193 * we also need to make sure that killing afpd during startup
194 * won't leave any lingering registered names around.
198 sigaddset(&sigs, SIGHUP);
199 sigaddset(&sigs, SIGTERM);
200 sigprocmask(SIG_BLOCK, &sigs, NULL);
201 if (!(configs = configinit(&default_options))) {
202 syslog(LOG_ERR, "main: no servers configured: %m\n");
205 sigprocmask(SIG_UNBLOCK, &sigs, NULL);
207 /* watch atp and dsi sockets. */
209 for (config = configs; config; config = config->next) {
210 if (config->fd < 0) /* for proxies */
212 FD_SET(config->fd, &save_rfds);
215 /* wait for an appleshare connection. parent remains in the loop
216 * while the children get handled by afp_over_{asp,dsi}. this is
217 * currently vulnerable to a denial-of-service attack if a
218 * connection is made without an actual login attempt being made
219 * afterwards. establishing timeouts for logins is a possible
223 if (select(FD_SETSIZE, &rfds, NULL, NULL, NULL) < 0) {
226 syslog(LOG_ERR, "main: can't wait for input: %m");
230 for (config = configs; config; config = config->next) {
233 if (FD_ISSET(config->fd, &rfds))
234 config->server_start(config, configs, server_children);