NetBSD/dist/ipf/lib/icmpcode.c

50 lines
1014 B
C

/* $NetBSD: icmpcode.c,v 1.5 2005/02/08 07:01:53 martti Exp $ */
/*
* 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;
}