50 lines
1006 B
C
50 lines
1006 B
C
/* $NetBSD: icmpcode.c,v 1.4 2004/11/13 19:16:10 he Exp $ */
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/*
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* Copyright (C) 1993-2001 by Darren Reed.
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*
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* See the IPFILTER.LICENCE file for details on licencing.
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*
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* Id: icmpcode.c,v 1.7 2003/12/01 01:59:07 darrenr Exp
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*/
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#include <ctype.h>
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#include "ipf.h"
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#ifndef MIN
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# define MIN(a,b) ((a) > (b) ? (b) : (a))
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#endif
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char *icmpcodes[MAX_ICMPCODE + 1] = {
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"net-unr", "host-unr", "proto-unr", "port-unr", "needfrag", "srcfail",
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"net-unk", "host-unk", "isolate", "net-prohib", "host-prohib",
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"net-tos", "host-tos", "filter-prohib", "host-preced", "preced-cutoff",
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NULL };
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/*
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* Return the number for the associated ICMP unreachable code.
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*/
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int icmpcode(str)
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char *str;
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{
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char *s;
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int i, len;
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if ((s = strrchr(str, ')')))
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*s = '\0';
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if (ISDIGIT(*str)) {
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if (!ratoi(str, &i, 0, 255))
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return -1;
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else
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return i;
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}
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len = strlen(str);
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for (i = 0; icmpcodes[i]; i++)
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if (!strncasecmp(str, icmpcodes[i], MIN(len,
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strlen(icmpcodes[i])) ))
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return i;
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return -1;
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}
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