2 * $Id: main.c,v 1.7 2001-05-23 23:55:23 samnoble 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;
60 static void afp_exit(const int i)
62 server_unlock(default_options.pidfile);
66 static void afp_goaway(int sig)
74 syslog( LOG_INFO, "shutting down on signal %d", sig );
77 /* w/ a configuration file, we can force a re-read if we want */
79 if ((nologin + 1) & 1) {
82 syslog(LOG_INFO, "re-reading configuration file");
83 for (config = configs; config; config = config->next)
84 if (config->server_cleanup)
85 config->server_cleanup(config);
87 configfree(configs, NULL);
88 if (!(configs = configinit(&default_options))) {
89 syslog(LOG_ERR, "config re-read: no servers configured");
93 for (config = configs; config; config = config->next) {
96 FD_SET(config->fd, &save_rfds);
99 syslog(LOG_INFO, "disallowing logins");
104 syslog( LOG_ERR, "afp_goaway: bad signal" );
106 if ( sig == SIGTERM ) {
109 for (config = configs; config; config = config->next)
110 if (config->server_cleanup)
111 config->server_cleanup(config);
118 static void child_handler()
120 server_child_handler(server_children);
133 set_auth_parameters( ac, av );
136 umask( 0 ); /* so inherited file permissions work right */
138 afp_options_init(&default_options);
139 if (!afp_options_parse(ac, av, &default_options))
142 switch(server_lock("afpd", default_options.pidfile,
143 default_options.flags & OPTION_DEBUG)) {
148 default: /* server */
152 /* install child handler for asp and dsi. we do this before afp_goaway
153 * as afp_goaway references stuff from here.
154 * XXX: this should really be setup after the initial connections. */
155 if (!(server_children = server_child_alloc(default_options.connections,
157 syslog(LOG_ERR, "main: server_child alloc: %m");
161 memset(&sv, 0, sizeof(sv));
162 sv.sa_handler = child_handler;
163 sigemptyset( &sv.sa_mask );
164 sv.sa_flags = SA_RESTART;
165 if ( sigaction( SIGCHLD, &sv, 0 ) < 0 ) {
166 syslog( LOG_ERR, "main: sigaction: %m" );
170 sv.sa_handler = afp_goaway;
171 sigemptyset( &sv.sa_mask );
172 sigaddset(&sv.sa_mask, SIGHUP);
173 sigaddset(&sv.sa_mask, SIGTERM);
174 sv.sa_flags = SA_RESTART;
175 if ( sigaction( SIGHUP, &sv, 0 ) < 0 ) {
176 syslog( LOG_ERR, "main: sigaction: %m" );
179 if ( sigaction( SIGTERM, &sv, 0 ) < 0 ) {
180 syslog( LOG_ERR, "main: sigaction: %m" );
184 /* afpd.conf: not in config file: lockfile, connections, configfile
185 * preference: command-line provides defaults.
186 * config file over-writes defaults.
188 * we also need to make sure that killing afpd during startup
189 * won't leave any lingering registered names around.
193 sigaddset(&sigs, SIGHUP);
194 sigaddset(&sigs, SIGTERM);
195 sigprocmask(SIG_BLOCK, &sigs, NULL);
196 if (!(configs = configinit(&default_options))) {
197 syslog(LOG_ERR, "main: no servers configured: %m\n");
200 sigprocmask(SIG_UNBLOCK, &sigs, NULL);
202 /* watch atp and dsi sockets. */
204 for (config = configs; config; config = config->next) {
205 if (config->fd < 0) /* for proxies */
207 FD_SET(config->fd, &save_rfds);
210 /* wait for an appleshare connection. parent remains in the loop
211 * while the children get handled by afp_over_{asp,dsi}. this is
212 * currently vulnerable to a denial-of-service attack if a
213 * connection is made without an actual login attempt being made
214 * afterwards. establishing timeouts for logins is a possible
218 if (select(FD_SETSIZE, &rfds, NULL, NULL, NULL) < 0) {
221 syslog(LOG_ERR, "main: can't wait for input: %m");
225 for (config = configs; config; config = config->next) {
228 if (FD_ISSET(config->fd, &rfds))
229 config->server_start(config, configs, server_children);