2 * $Id: main.c,v 1.5 2001-05-03 13:57:44 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"
47 unsigned char nologin = 0;
49 struct afp_options default_options;
50 static AFPConfig *configs;
51 static server_child *server_children;
52 static fd_set save_rfds;
55 int addr_net, addr_node, addr_uid;
59 static void afp_exit(const int i)
61 server_unlock(default_options.pidfile);
65 static void afp_goaway(int sig)
73 syslog( LOG_INFO, "shutting down on signal %d", sig );
76 /* w/ a configuration file, we can force a re-read if we want */
78 if ((nologin + 1) & 1) {
81 syslog(LOG_INFO, "re-reading configuration file");
82 for (config = configs; config; config = config->next)
83 if (config->server_cleanup)
84 config->server_cleanup(config);
86 configfree(configs, NULL);
87 if (!(configs = configinit(&default_options))) {
88 syslog(LOG_ERR, "config re-read: no servers configured");
92 for (config = configs; config; config = config->next) {
95 FD_SET(config->fd, &save_rfds);
98 syslog(LOG_INFO, "disallowing logins");
103 syslog( LOG_ERR, "afp_goaway: bad signal" );
105 if ( sig == SIGTERM ) {
108 for (config = configs; config; config = config->next)
109 if (config->server_cleanup)
110 config->server_cleanup(config);
117 static void child_handler()
119 server_child_handler(server_children);
131 #ifdef DIGITAL_UNIX_SECURITY
132 set_auth_parameters( ac, av );
133 #endif /* DIGITAL_UNIX_SECURITY */
135 umask( 0 ); /* so inherited file permissions work right */
137 afp_options_init(&default_options);
138 if (!afp_options_parse(ac, av, &default_options))
141 switch(server_lock("afpd", default_options.pidfile,
142 default_options.flags & OPTION_DEBUG)) {
147 default: /* server */
151 /* install child handler for asp and dsi. we do this before afp_goaway
152 * as afp_goaway references stuff from here.
153 * XXX: this should really be setup after the initial connections. */
154 if (!(server_children = server_child_alloc(default_options.connections,
156 syslog(LOG_ERR, "main: server_child alloc: %m");
160 memset(&sv, 0, sizeof(sv));
161 sv.sa_handler = child_handler;
162 sigemptyset( &sv.sa_mask );
163 sv.sa_flags = SA_RESTART;
164 if ( sigaction( SIGCHLD, &sv, 0 ) < 0 ) {
165 syslog( LOG_ERR, "main: sigaction: %m" );
169 sv.sa_handler = afp_goaway;
170 sigemptyset( &sv.sa_mask );
171 sigaddset(&sv.sa_mask, SIGHUP);
172 sigaddset(&sv.sa_mask, SIGTERM);
173 sv.sa_flags = SA_RESTART;
174 if ( sigaction( SIGHUP, &sv, 0 ) < 0 ) {
175 syslog( LOG_ERR, "main: sigaction: %m" );
178 if ( sigaction( SIGTERM, &sv, 0 ) < 0 ) {
179 syslog( LOG_ERR, "main: sigaction: %m" );
183 /* afpd.conf: not in config file: lockfile, connections, configfile
184 * preference: command-line provides defaults.
185 * config file over-writes defaults.
187 * we also need to make sure that killing afpd during startup
188 * won't leave any lingering registered names around.
192 sigaddset(&sigs, SIGHUP);
193 sigaddset(&sigs, SIGTERM);
194 sigprocmask(SIG_BLOCK, &sigs, NULL);
195 if (!(configs = configinit(&default_options))) {
196 syslog(LOG_ERR, "main: no servers configured: %m\n");
199 sigprocmask(SIG_UNBLOCK, &sigs, NULL);
201 /* watch atp and dsi sockets. */
203 for (config = configs; config; config = config->next) {
204 if (config->fd < 0) /* for proxies */
206 FD_SET(config->fd, &save_rfds);
209 /* wait for an appleshare connection. parent remains in the loop
210 * while the children get handled by afp_over_{asp,dsi}. this is
211 * currently vulnerable to a denial-of-service attack if a
212 * connection is made without an actual login attempt being made
213 * afterwards. establishing timeouts for logins is a possible
217 if (select(FD_SETSIZE, &rfds, NULL, NULL, NULL) < 0) {
220 syslog(LOG_ERR, "main: can't wait for input: %m");
224 for (config = configs; config; config = config->next) {
227 if (FD_ISSET(config->fd, &rfds))
228 config->server_start(config, configs, server_children);