root/usr/src/cmd/mail/savehdrs.c
/*
 * 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   */

#include "mail.h"
/*
 * Save info on each header line for possible generation
 * of MTA positive or negative delivery notification
 */
void
savehdrs(s, hdrtype)
char *s;
int hdrtype;
{
        char            *q;
        int             rf;
        char            delim = ':';
        char            tbuf[HDRSIZ];
        static int      last_hdrtype = -1;

        if (hdrtype > H_CONT) {
                return;
        }
        if (hdrtype == H_CONT) {
                trimnl(s);
                pushlist(last_hdrtype, TAIL, s, TRUE);
                return;
        }

        last_hdrtype = hdrtype;

        if ((hdrtype == H_FROM) || (hdrtype == H_FROM1)) {
                delim = ' ';
        } else {
                if (fnuhdrtype == 0) {
                        /* Save type of first non-UNIX header line */
                        fnuhdrtype = hdrtype;
                }
        }
        switch (hdrtype) {
            case H_FROM1:
                /* If first ">From " line, check for '...remote from...' */
                if (hdrlines[H_FROM1].head == (struct hdrs *)NULL) {
                        if ((rf = substr(s, " remote from ")) >= 0) {
                                trimnl(s + rf);
                                (void) snprintf(tbuf, sizeof (tbuf),
                                    "from %s by %s%s; %s",
                                    s+rf+13, thissys, maildomain(),
                                    RFC822datestring);
                                pushlist(H_RECEIVED, HEAD, tbuf, FALSE);
                        }
                }
                break;

            /* Remember that these header line type were in orig. msg.  */
            case H_AFWDFROM:
                orig_aff++;
                break;
            case H_RECEIVED:
                orig_rcv++;
                break;
            case H_TCOPY:
                orig_tcopy++;
                break;
        }
        q = strchr(s, delim) + 1;
        q = skipspace(q);
        trimnl(q);
        if ((hdrtype == H_UAID) || (hdrtype == H_MTSID)) {
                /* Check for enclosing '<' & '>', and remove if found */
                /* gendeliv() will replace them if necessary */
                if ((*q == '<') && (*(q+strlen(q)-1) == '>')) {
                        q++;
                        *(q+strlen(q)-1) = '\0';
                }
        }

        pushlist(hdrtype, TAIL, q, FALSE);
}