44 lines
913 B
C
44 lines
913 B
C
/* $FreeBSD$ */
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/*
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* Copyright (C) 2012 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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* $Id$
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*/
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#include "ipf.h"
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char *
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portname(int pr, int port)
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{
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static char buf[32];
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struct protoent *p = NULL;
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struct servent *sv = NULL;
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struct servent *sv1 = NULL;
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if ((opts & OPT_NORESOLVE) == 0) {
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if (pr == -1) {
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if ((sv = getservbyport(htons(port), "tcp"))) {
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strncpy(buf, sv->s_name, sizeof(buf)-1);
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buf[sizeof(buf)-1] = '\0';
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sv1 = getservbyport(htons(port), "udp");
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sv = strncasecmp(buf, sv->s_name, strlen(buf)) ?
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NULL : sv1;
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}
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if (sv)
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return(buf);
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} else if ((pr != -2) && (p = getprotobynumber(pr))) {
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if ((sv = getservbyport(htons(port), p->p_name))) {
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strncpy(buf, sv->s_name, sizeof(buf)-1);
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buf[sizeof(buf)-1] = '\0';
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return(buf);
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}
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}
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}
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(void) snprintf(buf, sizeof(buf), "%d", port);
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return(buf);
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}
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