poplist.c revision 7c478bd95313f5f23a4c958a745db2134aa03244
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 */
31void poplist (hdrtype, where)
32register int	hdrtype;
33register 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}
92