1 files changed, 43 insertions, 0 deletions
diff --git a/contrib/ipfilter/lib/printpacket6.c b/contrib/ipfilter/lib/printpacket6.c
new file mode 100644
index 0000000..2f9ea1d
--- /dev/null
+++ b/contrib/ipfilter/lib/printpacket6.c
@@ -0,0 +1,43 @@
+/*	$NetBSD$	*/
+
+#include "ipf.h"
+
+/*
+ * This is meant to work without the IPv6 header files being present or
+ * the inet_ntop() library.
+ */
+void printpacket6(ip)
+struct ip *ip;
+{
+	u_char *buf, p;
+	u_short plen, *addrs;
+	tcphdr_t *tcp;
+	u_32_t flow;
+
+	buf = (u_char *)ip;
+	tcp = (tcphdr_t *)(buf + 40);
+	p = buf[6];
+	flow = ntohl(*(u_32_t *)buf);
+	flow &= 0xfffff;
+	plen = ntohs(*((u_short *)buf +2));
+	addrs = (u_short *)buf + 4;
+
+	printf("ip6/%d %d %#x %d", buf[0] & 0xf, plen, flow, p);
+	printf(" %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x",
+		ntohs(addrs[0]), ntohs(addrs[1]), ntohs(addrs[2]),
+		ntohs(addrs[3]), ntohs(addrs[4]), ntohs(addrs[5]),
+		ntohs(addrs[6]), ntohs(addrs[7]));
+	if (plen >= 4)
+		if (p == IPPROTO_TCP || p == IPPROTO_UDP)
+			(void)printf(",%d", ntohs(tcp->th_sport));
+	printf(" >");
+	addrs += 8;
+	printf(" %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x",
+		ntohs(addrs[0]), ntohs(addrs[1]), ntohs(addrs[2]),
+		ntohs(addrs[3]), ntohs(addrs[4]), ntohs(addrs[5]),
+		ntohs(addrs[6]), ntohs(addrs[7]));
+	if (plen >= 4)
+		if (p == IPPROTO_TCP || p == IPPROTO_UDP)
+			(void)printf(",%d", ntohs(tcp->th_dport));
+	putchar('\n');
+}