10Sstevel@tonic-gate /*
20Sstevel@tonic-gate  * CDDL HEADER START
30Sstevel@tonic-gate  *
40Sstevel@tonic-gate  * The contents of this file are subject to the terms of the
50Sstevel@tonic-gate  * Common Development and Distribution License, Version 1.0 only
60Sstevel@tonic-gate  * (the "License").  You may not use this file except in compliance
70Sstevel@tonic-gate  * with the License.
80Sstevel@tonic-gate  *
90Sstevel@tonic-gate  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
100Sstevel@tonic-gate  * or http://www.opensolaris.org/os/licensing.
110Sstevel@tonic-gate  * See the License for the specific language governing permissions
120Sstevel@tonic-gate  * and limitations under the License.
130Sstevel@tonic-gate  *
140Sstevel@tonic-gate  * When distributing Covered Code, include this CDDL HEADER in each
150Sstevel@tonic-gate  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
160Sstevel@tonic-gate  * If applicable, add the following below this CDDL HEADER, with the
170Sstevel@tonic-gate  * fields enclosed by brackets "[]" replaced with your own identifying
180Sstevel@tonic-gate  * information: Portions Copyright [yyyy] [name of copyright owner]
190Sstevel@tonic-gate  *
200Sstevel@tonic-gate  * CDDL HEADER END
210Sstevel@tonic-gate  */
22*1219Sraf 
230Sstevel@tonic-gate /*	Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T	*/
240Sstevel@tonic-gate /*	  All Rights Reserved  	*/
250Sstevel@tonic-gate 
260Sstevel@tonic-gate /*
27*1219Sraf  * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
28*1219Sraf  * Use is subject to license terms.
290Sstevel@tonic-gate  */
300Sstevel@tonic-gate 
310Sstevel@tonic-gate #pragma ident	"%Z%%M%	%I%	%E% SMI"
320Sstevel@tonic-gate /*LINTLIBRARY*/
330Sstevel@tonic-gate 
34*1219Sraf #include "c_synonyms.h"
350Sstevel@tonic-gate #include <sys/types.h>
360Sstevel@tonic-gate #include "libmail.h"
370Sstevel@tonic-gate 
380Sstevel@tonic-gate /*
390Sstevel@tonic-gate  *	This routine looks for string2 in string1.
400Sstevel@tonic-gate  *	If found, it returns the position string2 is found at,
410Sstevel@tonic-gate  *	otherwise it returns a -1.
420Sstevel@tonic-gate  */
430Sstevel@tonic-gate int
440Sstevel@tonic-gate substr(char *string1, char *string2)
450Sstevel@tonic-gate {
460Sstevel@tonic-gate 	int i, j, len1, len2;
470Sstevel@tonic-gate 
480Sstevel@tonic-gate 	/* the size of the substring will always fit into an int */
490Sstevel@tonic-gate 	/*LINTED*/
500Sstevel@tonic-gate 	len1 = (int)strlen(string1);
510Sstevel@tonic-gate 	/*LINTED*/
520Sstevel@tonic-gate 	len2 = (int)strlen(string2);
530Sstevel@tonic-gate 	for (i = 0; i < len1 - len2 + 1; i++) {
540Sstevel@tonic-gate 		for (j = 0; j < len2 && string1[i+j] == string2[j]; j++);
550Sstevel@tonic-gate 		if (j == len2)
560Sstevel@tonic-gate 			return (i);
570Sstevel@tonic-gate 	}
580Sstevel@tonic-gate 	return (-1);
590Sstevel@tonic-gate }
60