1 files changed, 89 insertions, 0 deletions
diff --git a/lib/printpacket.c b/lib/printpacket.c
new file mode 100644
index 0000000..6ee3679
--- /dev/null
+++ b/lib/printpacket.c
@@ -0,0 +1,89 @@
+/*
+ * Copyright (C) 2000-2005 by Darren Reed.
+ *
+ * See the IPFILTER.LICENCE file for details on licencing.
+ *
+ * $Id: printpacket.c,v 1.12.4.5 2007/09/09 22:15:30 darrenr Exp $
+ */
+
+#include "ipf.h"
+
+#ifndef	IP_OFFMASK
+# define	IP_OFFMASK	0x3fff
+#endif
+
+
+void printpacket(ip)
+struct ip *ip;
+{
+	struct	tcphdr	*tcp;
+	u_short len;
+	u_short off;
+
+	if (IP_V(ip) == 6) {
+		off = 0;
+		len = ntohs(((u_short *)ip)[2]) + 40;
+	} else {
+		off = ntohs(ip->ip_off);
+		len = ntohs(ip->ip_len);
+	}
+
+	if ((opts & OPT_HEX) == OPT_HEX) {
+		u_char *s;
+		int i;
+
+		for (s = (u_char *)ip, i = 0; i < len; i++) {
+			printf("%02x", *s++ & 0xff);
+			if (len - i > 1) {
+				i++;
+				printf("%02x", *s++ & 0xff);
+			}
+			putchar(' ');
+		}
+		putchar('\n');
+		putchar('\n');
+		return;
+	}
+
+	if (IP_V(ip) == 6) {
+		printpacket6(ip);
+		return;
+	}
+
+	tcp = (struct tcphdr *)((char *)ip + (IP_HL(ip) << 2));
+	printf("ip #%d %d(%d) %d", ntohs(ip->ip_id), ntohs(ip->ip_len),
+	       IP_HL(ip) << 2, ip->ip_p);
+	if (off & IP_OFFMASK)
+		printf(" @%d", (off & IP_OFFMASK) << 3);
+	printf(" %s", inet_ntoa(ip->ip_src));
+	if (!(off & IP_OFFMASK))
+		if (ip->ip_p == IPPROTO_TCP || ip->ip_p == IPPROTO_UDP)
+			printf(",%d", ntohs(tcp->th_sport));
+	printf(" > ");
+	printf("%s", inet_ntoa(ip->ip_dst));
+	if (!(off & IP_OFFMASK)) {
+		if (ip->ip_p == IPPROTO_TCP || ip->ip_p == IPPROTO_UDP)
+			printf(",%d", ntohs(tcp->th_dport));
+		if ((ip->ip_p == IPPROTO_TCP) && (tcp->th_flags != 0)) {
+			putchar(' ');
+			if (tcp->th_flags & TH_FIN)
+				putchar('F');
+			if (tcp->th_flags & TH_SYN)
+				putchar('S');
+			if (tcp->th_flags & TH_RST)
+				putchar('R');
+			if (tcp->th_flags & TH_PUSH)
+				putchar('P');
+			if (tcp->th_flags & TH_ACK)
+				putchar('A');
+			if (tcp->th_flags & TH_URG)
+				putchar('U');
+			if (tcp->th_flags & TH_ECN)
+				putchar('E');
+			if (tcp->th_flags & TH_CWR)
+				putchar('C');
+		}
+	}
+
+	putchar('\n');
+}