1 files changed, 49 insertions, 0 deletions
diff --git a/contrib/ipfilter/lib/icmpcode.c b/contrib/ipfilter/lib/icmpcode.c
new file mode 100644
index 0000000..17e1ba4
--- /dev/null
+++ b/contrib/ipfilter/lib/icmpcode.c
@@ -0,0 +1,49 @@
+/*	$NetBSD$	*/
+
+/*
+ * Copyright (C) 1993-2001 by Darren Reed.
+ *
+ * See the IPFILTER.LICENCE file for details on licencing.
+ *
+ * Id: icmpcode.c,v 1.7.2.1 2004/12/09 19:41:20 darrenr Exp
+ */
+
+#include <ctype.h>
+
+#include "ipf.h"
+
+#ifndef	MIN
+# define	MIN(a,b)	((a) > (b) ? (b) : (a))
+#endif
+
+
+char	*icmpcodes[MAX_ICMPCODE + 1] = {
+	"net-unr", "host-unr", "proto-unr", "port-unr", "needfrag", "srcfail",
+	"net-unk", "host-unk", "isolate", "net-prohib", "host-prohib",
+	"net-tos", "host-tos", "filter-prohib", "host-preced", "preced-cutoff",
+	NULL };
+
+/*
+ * Return the number for the associated ICMP unreachable code.
+ */
+int icmpcode(str)
+char *str;
+{
+	char	*s;
+	int	i, len;
+
+	if ((s = strrchr(str, ')')))
+		*s = '\0';
+	if (ISDIGIT(*str)) {
+		if (!ratoi(str, &i, 0, 255))
+			return -1;
+		else
+			return i;
+	}
+	len = strlen(str);
+	for (i = 0; icmpcodes[i]; i++)
+		if (!strncasecmp(str, icmpcodes[i], MIN(len,
+				 strlen(icmpcodes[i])) ))
+			return i;
+	return -1;
+}