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#pragma ident	"%Z%%M%	%I%	%E% SMI"
26
27#include "mail.h"
28/*
29 * link new entry into list of headerlines encountered of this type.
30 * If contflg == TRUE, link this line to the end of the continuation lines
31 * for the headerline specified (head or tail of type hdrtype).
32 */
33void pushlist(hdrtype, where, s, contflg)
34register	int	hdrtype;
35register	int	where;
36register		char *s;
37{
38	static char pn[] = "pushlist";
39	char		*p;
40	struct	hdrs	*nhp, *ohp, *nextcont;
41
42	/* Keep track of total bytes added to message due to    */
43	/* certain lines in case non-delivery                   */
44	/* notification needs to be sent. (See also copylet())  */
45	if (hdrtype == H_AFWDFROM) {
46		affbytecnt += (strlen(s) + ((contflg == TRUE) ?
47			1 :
48			(strlen(header[H_AFWDFROM].tag) + 2)) );
49		if (contflg == FALSE) {
50			affcnt++;
51		}
52	}
53	if (hdrtype == H_RECEIVED) {
54		rcvbytecnt += (strlen(s) + ((contflg == TRUE) ?
55			1 :
56			(strlen(header[H_RECEIVED].tag) + 2)) );
57	}
58	if ((p = malloc(sizeof(struct hdrs))) == (char *)NULL) {
59		errmsg(E_MEM,"malloc failed in pushlist()");
60		done(1);
61	}
62	memset(p, 0, sizeof(struct hdrs));
63
64	ohp = (where == HEAD ? hdrlines[hdrtype].head : hdrlines[hdrtype].tail);
65	nhp = (struct hdrs *)p;
66
67	(void) strlcpy(nhp->value, s, sizeof (nhp->value));
68
69	Dout(pn, 0, "hdrtype = %d/%s, contflg = %d, saved value = '%s'\n",
70		hdrtype, header[hdrtype].tag, contflg, s);
71
72	if (contflg) {
73		if (ohp == (struct hdrs *)NULL) {
74			/* This shouldn't happen.....? */
75			/* No headline of this type found so far. How */
76			/* did we think this is a continuation of something? */
77			if (debug > 0) {
78				Dout(pn, 0, "H_CONT with no hdr yet\n");
79				abort();
80			}
81			/* Throw it on the floor... (!) */
82			/**/
83			/* Subtract anything that might have been added above */
84			if (hdrtype == H_AFWDFROM) {
85			    affbytecnt -= (strlen(s) + ((contflg == TRUE) ?
86				1 :
87				(strlen(header[H_AFWDFROM].tag) + 2)) );
88			}
89			if (hdrtype == H_RECEIVED) {
90			    rcvbytecnt -= (strlen(s) + ((contflg == TRUE) ?
91				1 :
92				(strlen(header[H_RECEIVED].tag) + 2)) );
93			}
94			free ((char *)nhp);
95			return;
96		}
97		/* Since we ONLY walk down 'cont' chains, */
98		/* we only need forward links */
99		nextcont = ohp;
100		while (nextcont->cont != (struct hdrs *)NULL) {
101			nextcont = nextcont->cont;
102		}
103		/* Add this one to end of list... */
104		nextcont->cont = nhp;
105		return;
106	}
107
108	/* link value from this header line to end of list for */
109	/* all header lines of the same type */
110
111	if (ohp == (struct hdrs *)NULL) {
112		/* Empty list so far. New element goes first */
113		hdrlines[hdrtype].head = hdrlines[hdrtype].tail = nhp;
114	} else {
115		if (where == HEAD) {
116			/* Add new element to head of list */
117			nhp->next = ohp;
118			hdrlines[hdrtype].head = ohp->prev = nhp;
119		} else {
120			/* Add new element to tail of list */
121			nhp->prev = ohp;
122			hdrlines[hdrtype].tail = ohp->next = nhp;
123		}
124	}
125}
126