xref: /onnv-gate/usr/src/cmd/ipf/lib/common/icmpcode.c (revision 2393:76e0289ce525)
10Sstevel@tonic-gate /*
20Sstevel@tonic-gate  * Copyright (C) 1993-2001 by Darren Reed.
30Sstevel@tonic-gate  *
40Sstevel@tonic-gate  * See the IPFILTER.LICENCE file for details on licencing.
50Sstevel@tonic-gate  *
6*2393Syz155240  * $Id: icmpcode.c,v 1.7.2.1 2004/12/09 19:41:20 darrenr Exp $
70Sstevel@tonic-gate  */
80Sstevel@tonic-gate 
90Sstevel@tonic-gate #include <ctype.h>
100Sstevel@tonic-gate 
110Sstevel@tonic-gate #include "ipf.h"
120Sstevel@tonic-gate 
130Sstevel@tonic-gate #ifndef	MIN
140Sstevel@tonic-gate # define	MIN(a,b)	((a) > (b) ? (b) : (a))
150Sstevel@tonic-gate #endif
160Sstevel@tonic-gate 
170Sstevel@tonic-gate 
180Sstevel@tonic-gate char	*icmpcodes[MAX_ICMPCODE + 1] = {
190Sstevel@tonic-gate 	"net-unr", "host-unr", "proto-unr", "port-unr", "needfrag", "srcfail",
200Sstevel@tonic-gate 	"net-unk", "host-unk", "isolate", "net-prohib", "host-prohib",
21*2393Syz155240 	"net-tos", "host-tos", "filter-prohib", "host-preced", "preced-cutoff",
220Sstevel@tonic-gate 	NULL };
230Sstevel@tonic-gate 
240Sstevel@tonic-gate /*
250Sstevel@tonic-gate  * Return the number for the associated ICMP unreachable code.
260Sstevel@tonic-gate  */
icmpcode(str)270Sstevel@tonic-gate int icmpcode(str)
280Sstevel@tonic-gate char *str;
290Sstevel@tonic-gate {
300Sstevel@tonic-gate 	char	*s;
310Sstevel@tonic-gate 	int	i, len;
320Sstevel@tonic-gate 
330Sstevel@tonic-gate 	if ((s = strrchr(str, ')')))
340Sstevel@tonic-gate 		*s = '\0';
35*2393Syz155240 	if (ISDIGIT(*str)) {
360Sstevel@tonic-gate 		if (!ratoi(str, &i, 0, 255))
370Sstevel@tonic-gate 			return -1;
380Sstevel@tonic-gate 		else
390Sstevel@tonic-gate 			return i;
400Sstevel@tonic-gate 	}
410Sstevel@tonic-gate 	len = strlen(str);
420Sstevel@tonic-gate 	for (i = 0; icmpcodes[i]; i++)
430Sstevel@tonic-gate 		if (!strncasecmp(str, icmpcodes[i], MIN(len,
440Sstevel@tonic-gate 				 strlen(icmpcodes[i])) ))
450Sstevel@tonic-gate 			return i;
460Sstevel@tonic-gate 	return -1;
470Sstevel@tonic-gate }
48