cmd/mail/poplist.c

	poplist.c revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (the "License").  You may not use this file except in compliance
 * with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*  Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
/*    All Rights Reserved   */


#pragma ident   "%Z%%M% %I% %E% SMI"    /* SVr4.0 2.    */
#include "mail.h"
/*
 * Remove an entry from its linked list and free any malloc'd memory..
 */
void poplist (hdrtype, where)
register int    hdrtype;
register int    where;
{
    struct  hdrs    *hdr2rm, *cont2rm, *nextcont;

    /* Remove first/last entry from list */

    hdr2rm = (where == HEAD ?
            hdrlines[hdrtype].head : hdrlines[hdrtype].tail);

    if (hdr2rm == (struct hdrs *)NULL) {
        return;
    }
    if (where == HEAD) {
        if (hdr2rm->next == (struct hdrs *)NULL) {
            /* Only 1 entry in list */
            hdrlines[hdrtype].head = hdrlines[hdrtype].tail =
                            (struct hdrs *)NULL;
        } else {
            hdrlines[hdrtype].head = hdr2rm->next;
            hdr2rm->next->prev = (struct hdrs *)NULL;
        }
    } else {
        if (hdr2rm->prev == (struct hdrs *)NULL) {
            /* Only 1 entry in list */
            hdrlines[hdrtype].head = hdrlines[hdrtype].tail =
                            (struct hdrs *)NULL;
        } else {
            hdrlines[hdrtype].tail = hdr2rm->prev;
            hdr2rm->prev->next = (struct hdrs *)NULL;
        }
    }
    /* Keep track of total bytes added to message due to    */
    /* selected lines in case non-delivery                  */
    /* notification needs to be sent. (See also copylet())  */
    if (hdrtype == H_AFWDFROM) {
        affbytecnt -=
        (strlen(header[H_AFWDFROM].tag) + strlen(hdr2rm->value) + 2);
        affcnt--;
    }
    if (hdrtype == H_RECEIVED) {
        rcvbytecnt -=
        (strlen(header[H_RECEIVED].tag) + strlen(hdr2rm->value) + 2);
    }

    cont2rm = hdr2rm->cont;
    while (cont2rm != (struct hdrs *)NULL) {
        nextcont = cont2rm->next;
        if (hdrtype == H_AFWDFROM) {
            affbytecnt -= (strlen(cont2rm->value) + 1);
            affcnt--;
        }
        if (hdrtype == H_RECEIVED) {
            rcvbytecnt -= (strlen(cont2rm->value) + 1);
        }
        free ((char *)cont2rm);
        cont2rm = nextcont;
    }
    free ((char *)hdr2rm);
}