usr/src/cmd/mail/isit.c

   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 #pragma ident   "%Z%%M% %I%     %E% SMI"
  31
  32 #include "mail.h"
  33
  34 /*
  35  * isit(lp, type) --  match "name" portion of
  36  *              "name: value" pair
  37  *      lp      ->      pointer to line to check
  38  *      type    ->      type of header line to match
  39  * returns
  40  *      TRUE    ->      lp matches header type (case independent)
  41  *      FALSE   ->      no match
  42  *
  43  *  Execpt for H_FORM type, matching is case insensitive (bug 1173101)
  44  */
  45 int
  46 isit(lp, type)
  47 register char   *lp;
  48 register int    type;
  49 {
  50         register char   *p;
  51
  52         switch (type) {
  53         case H_FROM:
  54                 for (p = header[type].tag; *lp && *p; lp++, p++) {
  55                         if (*p != *lp)  {
  56                                 return(FALSE);
  57                         }
  58                 }
  59                 break;
  60         default:
  61                 for (p = header[type].tag; *lp && *p; lp++, p++) {
  62                         if (toupper(*p) != toupper(*lp))  {
  63                                 return(FALSE);
  64                         }
  65                 }
  66                 break;
  67         }
  68         if (*p == NULL) {
  69                 return(TRUE);
  70         }
  71         return(FALSE);
  72 }