xref: /illumos-gate/usr/src/cmd/mail/isit.c (revision 8eb8717cc9dc99bdd784b74c994bea7ef5e60f92)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License, Version 1.0 only
6  * (the "License").  You may not use this file except in compliance
7  * with the License.
8  *
9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10  * or http://www.opensolaris.org/os/licensing.
11  * See the License for the specific language governing permissions
12  * and limitations under the License.
13  *
14  * When distributing Covered Code, include this CDDL HEADER in each
15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16  * If applicable, add the following below this CDDL HEADER, with the
17  * fields enclosed by brackets "[]" replaced with your own identifying
18  * information: Portions Copyright [yyyy] [name of copyright owner]
19  *
20  * CDDL HEADER END
21  */
22 /*
23  * Copyright 1995 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  */
26 
27 /*	Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T	*/
28 /*	  All Rights Reserved	*/
29 
30 #include "mail.h"
31 
32 /*
33  * isit(lp, type) --  match "name" portion of
34  *		"name: value" pair
35  *	lp	->	pointer to line to check
36  *	type	->	type of header line to match
37  * returns
38  *	TRUE	->	lp matches header type (case independent)
39  *	FALSE	->	no match
40  *
41  *  Execpt for H_FORM type, matching is case insensitive (bug 1173101)
42  */
43 int
44 isit(char *lp, int type)
45 {
46 	char	*p;
47 
48 	switch (type) {
49 	case H_FROM:
50 		for (p = header[type].tag; *lp && *p; lp++, p++) {
51 			if (*p != *lp)  {
52 				return (FALSE);
53 			}
54 		}
55 		break;
56 	default:
57 		for (p = header[type].tag; *lp && *p; lp++, p++) {
58 			if (toupper(*p) != toupper(*lp))  {
59 				return (FALSE);
60 			}
61 		}
62 		break;
63 	}
64 	if (*p == '\0') {
65 		return (TRUE);
66 	}
67 	return (FALSE);
68 }
69