usr/src/cmd/mail/poplist.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 /*      Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
  23 /*        All Rights Reserved   */
  24
  25
  26 #pragma ident   "%Z%%M% %I%     %E% SMI"        /* SVr4.0 2.    */
  27 #include "mail.h"
  28 /*
  29  * Remove an entry from its linked list and free any malloc'd memory..
  30  */
  31 void poplist (hdrtype, where)
  32 register int    hdrtype;
  33 register int    where;
  34 {
  35         struct  hdrs    *hdr2rm, *cont2rm, *nextcont;
  36
  37         /* Remove first/last entry from list */
  38
  39         hdr2rm = (where == HEAD ?
  40                         hdrlines[hdrtype].head : hdrlines[hdrtype].tail);
  41
  42         if (hdr2rm == (struct hdrs *)NULL) {
  43                 return;
  44         }
  45         if (where == HEAD) {
  46                 if (hdr2rm->next == (struct hdrs *)NULL) {
  47                         /* Only 1 entry in list */
  48                         hdrlines[hdrtype].head = hdrlines[hdrtype].tail =
  49                                                         (struct hdrs *)NULL;
  50                 } else {
  51                         hdrlines[hdrtype].head = hdr2rm->next;
  52                         hdr2rm->next->prev = (struct hdrs *)NULL;
  53                 }
  54         } else {
  55                 if (hdr2rm->prev == (struct hdrs *)NULL) {
  56                         /* Only 1 entry in list */
  57                         hdrlines[hdrtype].head = hdrlines[hdrtype].tail =
  58                                                         (struct hdrs *)NULL;
  59                 } else {
  60                         hdrlines[hdrtype].tail = hdr2rm->prev;
  61                         hdr2rm->prev->next = (struct hdrs *)NULL;
  62                 }
  63         }
  64         /* Keep track of total bytes added to message due to    */
  65         /* selected lines in case non-delivery                  */
  66         /* notification needs to be sent. (See also copylet())  */
  67         if (hdrtype == H_AFWDFROM) {
  68             affbytecnt -=
  69                 (strlen(header[H_AFWDFROM].tag) + strlen(hdr2rm->value) + 2);
  70             affcnt--;
  71         }
  72         if (hdrtype == H_RECEIVED) {
  73             rcvbytecnt -=
  74                 (strlen(header[H_RECEIVED].tag) + strlen(hdr2rm->value) + 2);
  75         }
  76
  77         cont2rm = hdr2rm->cont;
  78         while (cont2rm != (struct hdrs *)NULL) {
  79                 nextcont = cont2rm->next;
  80                 if (hdrtype == H_AFWDFROM) {
  81                     affbytecnt -= (strlen(cont2rm->value) + 1);
  82                     affcnt--;
  83                 }
  84                 if (hdrtype == H_RECEIVED) {
  85                     rcvbytecnt -= (strlen(cont2rm->value) + 1);
  86                 }
  87                 free ((char *)cont2rm);
  88                 cont2rm = nextcont;
  89         }
  90         free ((char *)hdr2rm);
  91 }