sbin/natd/natd.c

26 #include <netinet/ip.h>
111 static char*	FormatPacket (struct ip*);
112 static void	PrintPacket (struct ip*);
113 static void	SyslogPacket (struct ip*, int priority, const char *label);
520 	struct ip*		ip;
552 	ip = (struct ip*) buf;
560 		switch (ip->ip_p) {
574 			printf ("[%d]    ", ip->ip_p);
580 		PrintPacket (ip);
591 	bytes = ntohs (ip->ip_len);
605 		PrintPacket (ip);
625 						  (struct ip*) buf,
646 	struct ip*		ip;
683 	ip = (struct ip*) buf;
699 		switch (ip->ip_p) {
713 			printf ("[%d]    ", ip->ip_p);
719 		PrintPacket (ip);
741 				SyslogPacket (ip, LOG_WARNING, "denied");
749 	bytes = ntohs (ip->ip_len);
764 		PrintPacket (ip);
785 						  (struct ip*) buf,
831 static void PrintPacket (struct ip* ip)
833 	printf ("%s", FormatPacket (ip));
836 static void SyslogPacket (struct ip* ip, int priority, const char *label)
838 	syslog (priority, "%s %s", label, FormatPacket (ip));
841 static char* FormatPacket (struct ip* ip)
850 	strcpy (src, inet_ntoa (ip->ip_src));
851 	strcpy (dst, inet_ntoa (ip->ip_dst));
853 	switch (ip->ip_p) {
855 		tcphdr = (struct tcphdr*) ((char*) ip + (ip->ip_hl << 2));
864 		udphdr = (struct udphdr*) ((char*) ip + (ip->ip_hl << 2));
873 		icmphdr = (struct icmp*) ((char*) ip + (ip->ip_hl << 2));
882 		sprintf (buf, "[%d] %s -> %s ", ip->ip_p, src, dst);
1999 	struct instance *ip;
2001 	LIST_FOREACH(ip, &root, list) {
2002 		if (!strcmp(ip->name, name)) {
2003 			mla = ip->la;
2004 			mip = ip;
2009 	ip = calloc(1, sizeof(*ip));
2010 	ip->name = strdup(name);
2011 	ip->la = LibAliasInit (ip->la);
2012 	ip->assignAliasAddr	= 0;
2013 	ip->ifName		= NULL;
2014  	ip->logDropped		= 0;
2015 	ip->inPort		= 0;
2016 	ip->outPort		= 0;
2017 	ip->inOutPort		= 0;
2018 	ip->aliasAddr.s_addr	= INADDR_NONE;
2019 	ip->ifMTU		= -1;
2020 	ip->aliasOverhead	= 12;
2021 	LIST_INSERT_HEAD(&root, ip, list);
2022 	mla = ip->la;
2023 	mip = ip;
2032 	if (sysctlbyname("net.inet.ip.fw.default_rule", &default_rule, &len,