xref: /illumos-gate/usr/src/cmd/ipf/lib/common/ports.c (revision ab25eeb5)
17c478bd9Sstevel@tonic-gate /*
27c478bd9Sstevel@tonic-gate  * Copyright (C) 1993-2001 by Darren Reed.
37c478bd9Sstevel@tonic-gate  *
47c478bd9Sstevel@tonic-gate  * See the IPFILTER.LICENCE file for details on licencing.
57c478bd9Sstevel@tonic-gate  *
6*ab25eeb5Syz  * $Id: ports.c,v 1.9.4.1 2004/12/09 19:41:22 darrenr Exp $
77c478bd9Sstevel@tonic-gate  */
87c478bd9Sstevel@tonic-gate 
97c478bd9Sstevel@tonic-gate #include <ctype.h>
107c478bd9Sstevel@tonic-gate 
117c478bd9Sstevel@tonic-gate #include "ipf.h"
127c478bd9Sstevel@tonic-gate 
137c478bd9Sstevel@tonic-gate 
147c478bd9Sstevel@tonic-gate /*
157c478bd9Sstevel@tonic-gate  * check for possible presence of the port fields in the line
167c478bd9Sstevel@tonic-gate  */
ports(seg,proto,pp,cp,tp,linenum)177c478bd9Sstevel@tonic-gate int	ports(seg, proto, pp, cp, tp, linenum)
187c478bd9Sstevel@tonic-gate char	***seg;
197c478bd9Sstevel@tonic-gate char	*proto;
207c478bd9Sstevel@tonic-gate u_short	*pp;
217c478bd9Sstevel@tonic-gate int	*cp;
227c478bd9Sstevel@tonic-gate u_short	*tp;
237c478bd9Sstevel@tonic-gate int     linenum;
247c478bd9Sstevel@tonic-gate {
257c478bd9Sstevel@tonic-gate 	int	comp = -1;
267c478bd9Sstevel@tonic-gate 
277c478bd9Sstevel@tonic-gate 	if (!*seg || !**seg || !***seg)
287c478bd9Sstevel@tonic-gate 		return 0;
297c478bd9Sstevel@tonic-gate 	if (!strcasecmp(**seg, "port") && *(*seg + 1) && *(*seg + 2)) {
307c478bd9Sstevel@tonic-gate 		(*seg)++;
31*ab25eeb5Syz 		if (ISALNUM(***seg) && *(*seg + 2)) {
327c478bd9Sstevel@tonic-gate 			if (portnum(**seg, proto, pp, linenum) == 0)
337c478bd9Sstevel@tonic-gate 				return -1;
347c478bd9Sstevel@tonic-gate 			(*seg)++;
357c478bd9Sstevel@tonic-gate 			if (!strcmp(**seg, "<>"))
367c478bd9Sstevel@tonic-gate 				comp = FR_OUTRANGE;
377c478bd9Sstevel@tonic-gate 			else if (!strcmp(**seg, "><"))
387c478bd9Sstevel@tonic-gate 				comp = FR_INRANGE;
397c478bd9Sstevel@tonic-gate 			else {
407c478bd9Sstevel@tonic-gate 				fprintf(stderr,
417c478bd9Sstevel@tonic-gate 					"%d: unknown range operator (%s)\n",
427c478bd9Sstevel@tonic-gate 					linenum, **seg);
437c478bd9Sstevel@tonic-gate 				return -1;
447c478bd9Sstevel@tonic-gate 			}
457c478bd9Sstevel@tonic-gate 			(*seg)++;
467c478bd9Sstevel@tonic-gate 			if (**seg == NULL) {
477c478bd9Sstevel@tonic-gate 				fprintf(stderr, "%d: missing 2nd port value\n",
487c478bd9Sstevel@tonic-gate 					linenum);
497c478bd9Sstevel@tonic-gate 				return -1;
507c478bd9Sstevel@tonic-gate 			}
517c478bd9Sstevel@tonic-gate 			if (portnum(**seg, proto, tp, linenum) == 0)
527c478bd9Sstevel@tonic-gate 				return -1;
537c478bd9Sstevel@tonic-gate 		} else if (!strcmp(**seg, "=") || !strcasecmp(**seg, "eq"))
547c478bd9Sstevel@tonic-gate 			comp = FR_EQUAL;
557c478bd9Sstevel@tonic-gate 		else if (!strcmp(**seg, "!=") || !strcasecmp(**seg, "ne"))
567c478bd9Sstevel@tonic-gate 			comp = FR_NEQUAL;
577c478bd9Sstevel@tonic-gate 		else if (!strcmp(**seg, "<") || !strcasecmp(**seg, "lt"))
587c478bd9Sstevel@tonic-gate 			comp = FR_LESST;
597c478bd9Sstevel@tonic-gate 		else if (!strcmp(**seg, ">") || !strcasecmp(**seg, "gt"))
607c478bd9Sstevel@tonic-gate 			comp = FR_GREATERT;
617c478bd9Sstevel@tonic-gate 		else if (!strcmp(**seg, "<=") || !strcasecmp(**seg, "le"))
627c478bd9Sstevel@tonic-gate 			comp = FR_LESSTE;
637c478bd9Sstevel@tonic-gate 		else if (!strcmp(**seg, ">=") || !strcasecmp(**seg, "ge"))
647c478bd9Sstevel@tonic-gate 			comp = FR_GREATERTE;
657c478bd9Sstevel@tonic-gate 		else {
667c478bd9Sstevel@tonic-gate 			fprintf(stderr, "%d: unknown comparator (%s)\n",
677c478bd9Sstevel@tonic-gate 					linenum, **seg);
687c478bd9Sstevel@tonic-gate 			return -1;
697c478bd9Sstevel@tonic-gate 		}
707c478bd9Sstevel@tonic-gate 		if (comp != FR_OUTRANGE && comp != FR_INRANGE) {
717c478bd9Sstevel@tonic-gate 			(*seg)++;
727c478bd9Sstevel@tonic-gate 			if (portnum(**seg, proto, pp, linenum) == 0)
737c478bd9Sstevel@tonic-gate 				return -1;
747c478bd9Sstevel@tonic-gate 		}
757c478bd9Sstevel@tonic-gate 		*cp = comp;
767c478bd9Sstevel@tonic-gate 		(*seg)++;
777c478bd9Sstevel@tonic-gate 	}
787c478bd9Sstevel@tonic-gate 	return 0;
797c478bd9Sstevel@tonic-gate }
80