--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/freeDiameter/config.c	Fri Sep 18 18:54:07 2009 +0900
@@ -0,0 +1,189 @@
+/*********************************************************************************************************
+* Software License Agreement (BSD License)                                                               *
+* Author: Sebastien Decugis <sdecugis@nict.go.jp>							 *
+*													 *
+* Copyright (c) 2009, WIDE Project and NICT								 *
+* All rights reserved.											 *
+* 													 *
+* Redistribution and use of this software in source and binary forms, with or without modification, are  *
+* permitted provided that the following conditions are met:						 *
+* 													 *
+* * Redistributions of source code must retain the above 						 *
+*   copyright notice, this list of conditions and the 							 *
+*   following disclaimer.										 *
+*    													 *
+* * Redistributions in binary form must reproduce the above 						 *
+*   copyright notice, this list of conditions and the 							 *
+*   following disclaimer in the documentation and/or other						 *
+*   materials provided with the distribution.								 *
+* 													 *
+* * Neither the name of the WIDE Project or NICT nor the 						 *
+*   names of its contributors may be used to endorse or 						 *
+*   promote products derived from this software without 						 *
+*   specific prior written permission of WIDE Project and 						 *
+*   NICT.												 *
+* 													 *
+* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED *
+* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A *
+* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR *
+* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 	 *
+* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 	 *
+* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR *
+* TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF   *
+* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.								 *
+*********************************************************************************************************/
+
+#include "fD.h"
+
+/* Configuration management */
+
+/* Initialize the fd_g_config structure to default values */
+int fd_conf_init()
+{
+	TRACE_ENTRY();
+	
+	fd_g_config->eyec = EYEC_CONFIG;
+	fd_g_config->conf_file = DEFAULT_CONF_FILE;
+	
+	fd_g_config->loc_port     = 3868;
+	fd_g_config->loc_port_tls = 3869;
+	fd_g_config->loc_sctp_str = 30;
+	fd_list_init(&fd_g_config->loc_endpoints, NULL);
+	
+	#ifdef DISABLE_SCTP
+	fd_g_config->flags.no_sctp = 1;
+	#endif /* DISABLE_SCTP */
+	
+	fd_g_config->timer_tc = 30;
+	fd_g_config->timer_tw = 30;
+	
+	fd_g_config->or_state_id = (uint32_t) time(NULL);
+	
+	CHECK_FCT( fd_dict_init(&fd_g_config->g_dict) );
+	CHECK_FCT( fd_fifo_new(&fd_g_config->g_fifo_main) );
+	
+	return 0;
+}
+
+void fd_conf_dump()
+{
+	if (!TRACE_BOOL(INFO))
+		return;
+	
+	fd_log_debug("-- Configuration :\n");
+	fd_log_debug("  Debug trace level ...... : %+d\n", fd_g_debug_lvl);
+	fd_log_debug("  Configuration file ..... : %s\n", fd_g_config->conf_file);
+	fd_log_debug("  Diameter Identity ...... : %s (l:%Zi)\n", fd_g_config->diam_id, fd_g_config->diam_id_len);
+	fd_log_debug("  Diameter Realm ......... : %s (l:%Zi)\n", fd_g_config->diam_realm, fd_g_config->diam_realm_len);
+	fd_log_debug("  Local port ............. : %hu\n", fd_g_config->loc_port);
+	fd_log_debug("  Local secure port ...... : %hu\n", fd_g_config->loc_port_tls);
+	fd_log_debug("  Number of SCTP streams . : %hu\n", fd_g_config->loc_sctp_str);
+	if (FD_IS_LIST_EMPTY(&fd_g_config->loc_endpoints)) {
+		fd_log_debug("  Local endpoints ........ : Default (use all available)\n");
+	} else {
+		struct fd_list * li = fd_g_config->loc_endpoints.next;
+		fd_log_debug("  Local endpoints ........ : ");
+		while (li != &fd_g_config->loc_endpoints) {
+			struct fd_endpoint * ep = (struct fd_endpoint *)li;
+			if (li != fd_g_config->loc_endpoints.next) fd_log_debug("                             ");
+			sSA_DUMP_NODE( &ep->ss, NI_NUMERICHOST );
+			fd_log_debug("\n");
+			li = li->next;
+		}
+	}
+	fd_log_debug("  Flags : - IP ........... : %s\n", fd_g_config->flags.no_ip4 ? "DISABLED" : "Enabled");
+	fd_log_debug("          - IPv6 ......... : %s\n", fd_g_config->flags.no_ip6 ? "DISABLED" : "Enabled");
+	fd_log_debug("          - Relay app .... : %s\n", fd_g_config->flags.no_fwd ? "DISABLED" : "Enabled");
+	fd_log_debug("          - TCP .......... : %s\n", fd_g_config->flags.no_tcp ? "DISABLED" : "Enabled");
+	#ifdef DISABLE_SCTP
+	fd_log_debug("          - SCTP ......... : DISABLED (at compilation)\n");
+	#else /* DISABLE_SCTP */
+	fd_log_debug("          - SCTP ......... : %s\n", fd_g_config->flags.no_sctp ? "DISABLED" : "Enabled");
+	#endif /* DISABLE_SCTP */
+	fd_log_debug("          - Pref. proto .. : %s\n", fd_g_config->flags.pr_tcp ? "TCP" : "SCTP");
+	fd_log_debug("          - TLS method ... : %s\n", fd_g_config->flags.tls_alg ? "INBAND" : "Separate port");
+	fd_log_debug("  Tc Timer ............... : %u\n", fd_g_config->timer_tc);
+	fd_log_debug("  Tw Timer ............... : %u\n", fd_g_config->timer_tw);
+	fd_log_debug("  Origin-State-Id ........ : %u\n", fd_g_config->or_state_id);
+}
+
+/* Parse the configuration file (using the yacc parser) */
+int fd_conf_parse()
+{
+	extern FILE * fddin;
+	
+	TRACE_DEBUG (FULL, "Parsing configuration file: %s", fd_g_config->conf_file);
+	
+	fddin = fopen(fd_g_config->conf_file, "r");
+	if (fddin == NULL) {
+		int ret = errno;
+		fprintf(stderr, "Unable to open configuration file %s for reading: %s\n", fd_g_config->conf_file, strerror(ret));
+		return ret;
+	}
+	
+	/* call yacc parser */
+	CHECK_FCT(  fddparse(fd_g_config)  );
+	
+	/* close the file */
+	fclose(fddin);
+	
+	/* Resolve hostname if not provided */
+	if (fd_g_config->diam_id == NULL) {
+#ifndef HOST_NAME_MAX
+#define HOST_NAME_MAX 1024
+#endif /* HOST_NAME_MAX */
+		char buf[HOST_NAME_MAX + 1];
+		struct addrinfo hints, *info;
+		int ret;
+		
+		/* local host name */
+		CHECK_SYS(gethostname(buf, sizeof(buf)));
+		
+		/* get FQDN */
+		memset(&hints, 0, sizeof hints);
+		hints.ai_flags = AI_CANONNAME;
+
+		ret = getaddrinfo(buf, NULL, &hints, &info);
+		if (ret != 0) {
+			fprintf(stderr, "Error resolving local FQDN :\n"
+					" '%s' : %s\n"
+					"Please provide LocalIdentity in configuration file.\n",
+					buf, gai_strerror(ret));
+			return EINVAL;
+		}
+		CHECK_MALLOC( fd_g_config->diam_id = strdup(info->ai_canonname) );
+		freeaddrinfo(info);
+	}
+	
+	/* cache the length of the diameter id for the session module */
+	fd_g_config->diam_id_len = strlen(fd_g_config->diam_id);
+	
+	/* Handle the realm part */
+	if (fd_g_config->diam_realm == NULL) {
+		char * start = NULL;
+		
+		/* Check the diameter identity is a fqdn */
+		start = strchr(fd_g_config->diam_id, '.');
+		if ((start == NULL) || (start[1] == '\0')) {
+			fprintf(stderr, "Unable to extract realm from the LocalIdentity '%s'.\n"
+					"Please fix your LocalIdentity setting or provide LocalRealm.\n",
+					fd_g_config->diam_id);
+			return EINVAL;
+		}		
+		
+		CHECK_MALLOC( fd_g_config->diam_realm = strdup( start + 1 )  ); 
+	}
+	fd_g_config->diam_realm_len = strlen(fd_g_config->diam_realm);
+	
+	/* Validate some flags */
+	if (fd_g_config->flags.no_ip4 && fd_g_config->flags.no_ip6) {
+		fprintf(stderr, "IP and IPv6 cannot be disabled at the same time.\n");
+		return EINVAL;
+	}
+	if (fd_g_config->flags.no_tcp && fd_g_config->flags.no_sctp) {
+		fprintf(stderr, "TCP and SCTP cannot be disabled at the same time.\n");
+		return EINVAL;
+	}
+	
+	return 0;
+}