576 lines
13 KiB
C
576 lines
13 KiB
C
/* $NetBSD: send.c,v 1.8 1997/11/25 17:55:52 bad Exp $ */
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/*
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* Copyright (c) 1980, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)send.c 8.1 (Berkeley) 6/6/93";
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#else
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__RCSID("$NetBSD: send.c,v 1.8 1997/11/25 17:55:52 bad Exp $");
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#endif
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#endif /* not lint */
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#include "rcv.h"
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#include "extern.h"
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/*
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* Mail -- a mail program
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*
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* Mail to others.
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*/
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/*
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* Send message described by the passed pointer to the
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* passed output buffer. Return -1 on error.
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* Adjust the status: field if need be.
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* If doign is given, suppress ignored header fields.
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* prefix is a string to prepend to each output line.
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*/
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int
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send(mp, obuf, doign, prefix)
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struct message *mp;
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FILE *obuf;
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struct ignoretab *doign;
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char *prefix;
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{
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long count;
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FILE *ibuf;
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char line[LINESIZE];
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int ishead, infld, ignoring = 0, dostat, firstline;
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char *cp, *cp2;
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int c = 0;
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int length;
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int prefixlen = 0;
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/*
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* Compute the prefix string, without trailing whitespace
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*/
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if (prefix != NOSTR) {
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cp2 = 0;
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for (cp = prefix; *cp; cp++)
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if (*cp != ' ' && *cp != '\t')
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cp2 = cp;
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prefixlen = cp2 == 0 ? 0 : cp2 - prefix + 1;
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}
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ibuf = setinput(mp);
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count = mp->m_size;
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ishead = 1;
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dostat = doign == 0 || !isign("status", doign);
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infld = 0;
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firstline = 1;
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/*
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* Process headers first
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*/
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while (count > 0 && ishead) {
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if (fgets(line, LINESIZE, ibuf) == NULL)
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break;
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count -= length = strlen(line);
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if (firstline) {
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/*
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* First line is the From line, so no headers
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* there to worry about
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*/
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firstline = 0;
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ignoring = doign == ignoreall;
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} else if (line[0] == '\n') {
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/*
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* If line is blank, we've reached end of
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* headers, so force out status: field
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* and note that we are no longer in header
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* fields
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*/
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if (dostat) {
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statusput(mp, obuf, prefix);
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dostat = 0;
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}
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ishead = 0;
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ignoring = doign == ignoreall;
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} else if (infld && (line[0] == ' ' || line[0] == '\t')) {
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/*
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* If this line is a continuation (via space or tab)
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* of a previous header field, just echo it
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* (unless the field should be ignored).
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* In other words, nothing to do.
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*/
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} else {
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/*
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* Pick up the header field if we have one.
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*/
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for (cp = line; (c = *cp++) && c != ':' && !isspace(c);)
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;
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cp2 = --cp;
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while (isspace(*cp++))
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;
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if (cp[-1] != ':') {
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/*
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* Not a header line, force out status:
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* This happens in uucp style mail where
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* there are no headers at all.
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*/
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if (dostat) {
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statusput(mp, obuf, prefix);
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dostat = 0;
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}
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if (doign != ignoreall)
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/* add blank line */
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(void) putc('\n', obuf);
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ishead = 0;
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ignoring = 0;
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} else {
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/*
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* If it is an ignored field and
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* we care about such things, skip it.
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*/
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*cp2 = 0; /* temporarily null terminate */
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if (doign && isign(line, doign))
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ignoring = 1;
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else if ((line[0] == 's' || line[0] == 'S') &&
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strcasecmp(line, "status") == 0) {
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/*
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* If the field is "status," go compute
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* and print the real Status: field
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*/
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if (dostat) {
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statusput(mp, obuf, prefix);
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dostat = 0;
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}
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ignoring = 1;
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} else {
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ignoring = 0;
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*cp2 = c; /* restore */
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}
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infld = 1;
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}
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}
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if (!ignoring) {
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/*
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* Strip trailing whitespace from prefix
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* if line is blank.
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*/
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if (prefix != NOSTR)
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if (length > 1)
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fputs(prefix, obuf);
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else
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(void) fwrite(prefix, sizeof *prefix,
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prefixlen, obuf);
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(void) fwrite(line, sizeof *line, length, obuf);
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if (ferror(obuf))
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return -1;
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}
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}
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/*
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* Copy out message body
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*/
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if (doign == ignoreall)
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count--; /* skip final blank line */
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if (prefix != NOSTR)
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while (count > 0) {
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if (fgets(line, LINESIZE, ibuf) == NULL) {
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c = 0;
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break;
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}
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count -= c = strlen(line);
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/*
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* Strip trailing whitespace from prefix
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* if line is blank.
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*/
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if (c > 1)
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fputs(prefix, obuf);
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else
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(void) fwrite(prefix, sizeof *prefix,
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prefixlen, obuf);
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(void) fwrite(line, sizeof *line, c, obuf);
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if (ferror(obuf))
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return -1;
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}
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else
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while (count > 0) {
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c = count < LINESIZE ? count : LINESIZE;
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if ((c = fread(line, sizeof *line, c, ibuf)) <= 0)
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break;
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count -= c;
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if (fwrite(line, sizeof *line, c, obuf) != c)
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return -1;
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}
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if (doign == ignoreall && c > 0 && line[c - 1] != '\n')
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/* no final blank line */
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if ((c = getc(ibuf)) != EOF && putc(c, obuf) == EOF)
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return -1;
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return 0;
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}
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/*
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* Output a reasonable looking status field.
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*/
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void
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statusput(mp, obuf, prefix)
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struct message *mp;
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FILE *obuf;
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char *prefix;
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{
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char statout[3];
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char *cp = statout;
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if (mp->m_flag & MREAD)
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*cp++ = 'R';
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if ((mp->m_flag & MNEW) == 0)
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*cp++ = 'O';
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*cp = 0;
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if (statout[0])
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fprintf(obuf, "%sStatus: %s\n",
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prefix == NOSTR ? "" : prefix, statout);
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}
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/*
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* Interface between the argument list and the mail1 routine
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* which does all the dirty work.
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*/
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int
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mail(to, cc, bcc, smopts, subject)
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struct name *to, *cc, *bcc, *smopts;
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char *subject;
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{
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struct header head;
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head.h_to = to;
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head.h_subject = subject;
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head.h_cc = cc;
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head.h_bcc = bcc;
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head.h_smopts = smopts;
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mail1(&head, 0);
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return(0);
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}
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/*
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* Send mail to a bunch of user names. The interface is through
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* the mail routine below.
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*/
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int
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sendmail(v)
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void *v;
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{
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char *str = v;
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struct header head;
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head.h_to = extract(str, GTO);
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head.h_subject = NOSTR;
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head.h_cc = NIL;
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head.h_bcc = NIL;
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head.h_smopts = NIL;
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mail1(&head, 0);
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return(0);
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}
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/*
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* Mail a message on standard input to the people indicated
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* in the passed header. (Internal interface).
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*/
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void
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mail1(hp, printheaders)
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struct header *hp;
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int printheaders;
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{
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char *cp;
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int pid;
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char **namelist;
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struct name *to;
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FILE *mtf;
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/*
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* Collect user's mail from standard input.
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* Get the result as mtf.
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*/
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if ((mtf = collect(hp, printheaders)) == NULL)
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return;
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if (value("interactive") != NOSTR)
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if (value("askcc") != NOSTR || value("askbcc") != NOSTR) {
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if (value("askcc") != NOSTR)
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grabh(hp, GCC);
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if (value("askbcc") != NOSTR)
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grabh(hp, GBCC);
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} else {
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printf("EOT\n");
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(void) fflush(stdout);
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}
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if (fsize(mtf) == 0)
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if (hp->h_subject == NOSTR)
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printf("No message, no subject; hope that's ok\n");
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else
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printf("Null message body; hope that's ok\n");
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/*
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* Now, take the user names from the combined
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* to and cc lists and do all the alias
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* processing.
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*/
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senderr = 0;
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to = usermap(cat(hp->h_bcc, cat(hp->h_to, hp->h_cc)));
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if (to == NIL) {
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printf("No recipients specified\n");
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senderr++;
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}
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/*
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* Look through the recipient list for names with /'s
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* in them which we write to as files directly.
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*/
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to = outof(to, mtf, hp);
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if (senderr)
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savedeadletter(mtf);
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to = elide(to);
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if (count(to) == 0)
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goto out;
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fixhead(hp, to);
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if ((mtf = infix(hp, mtf)) == NULL) {
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fprintf(stderr, ". . . message lost, sorry.\n");
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return;
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}
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namelist = unpack(cat(hp->h_smopts, to));
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if (debug) {
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char **t;
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printf("Sendmail arguments:");
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for (t = namelist; *t != NOSTR; t++)
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printf(" \"%s\"", *t);
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printf("\n");
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goto out;
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}
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if ((cp = value("record")) != NOSTR)
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(void) savemail(expand(cp), mtf);
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/*
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* Fork, set up the temporary mail file as standard
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* input for "mail", and exec with the user list we generated
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* far above.
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*/
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pid = fork();
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if (pid == -1) {
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perror("fork");
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savedeadletter(mtf);
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goto out;
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}
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if (pid == 0) {
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sigset_t nset;
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sigemptyset(&nset);
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sigaddset(&nset, SIGHUP);
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sigaddset(&nset, SIGINT);
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sigaddset(&nset, SIGQUIT);
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sigaddset(&nset, SIGTSTP);
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sigaddset(&nset, SIGTTIN);
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sigaddset(&nset, SIGTTOU);
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prepare_child(&nset, fileno(mtf), -1);
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if ((cp = value("sendmail")) != NOSTR)
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cp = expand(cp);
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else
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cp = _PATH_SENDMAIL;
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execv(cp, namelist);
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perror(cp);
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_exit(1);
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}
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if (value("verbose") != NOSTR)
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(void) wait_child(pid);
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else
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free_child(pid);
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out:
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(void) Fclose(mtf);
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}
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/*
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* Fix the header by glopping all of the expanded names from
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* the distribution list into the appropriate fields.
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*/
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void
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fixhead(hp, tolist)
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struct header *hp;
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struct name *tolist;
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{
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struct name *np;
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hp->h_to = NIL;
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hp->h_cc = NIL;
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hp->h_bcc = NIL;
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for (np = tolist; np != NIL; np = np->n_flink) {
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if (np->n_type & GDEL)
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continue; /* Don't copy deleted addresses to the header */
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if ((np->n_type & GMASK) == GTO)
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hp->h_to =
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cat(hp->h_to, nalloc(np->n_name, np->n_type));
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else if ((np->n_type & GMASK) == GCC)
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hp->h_cc =
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cat(hp->h_cc, nalloc(np->n_name, np->n_type));
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else if ((np->n_type & GMASK) == GBCC)
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hp->h_bcc =
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cat(hp->h_bcc, nalloc(np->n_name, np->n_type));
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}
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}
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/*
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* Prepend a header in front of the collected stuff
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* and return the new file.
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*/
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FILE *
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infix(hp, fi)
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struct header *hp;
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FILE *fi;
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{
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extern char *tempMail;
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FILE *nfo, *nfi;
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int c;
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if ((nfo = Fopen(tempMail, "w")) == NULL) {
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perror(tempMail);
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return(fi);
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}
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if ((nfi = Fopen(tempMail, "r")) == NULL) {
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perror(tempMail);
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(void) Fclose(nfo);
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return(fi);
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}
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(void) rm(tempMail);
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(void) puthead(hp, nfo, GTO|GSUBJECT|GCC|GBCC|GNL|GCOMMA);
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c = getc(fi);
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while (c != EOF) {
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(void) putc(c, nfo);
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c = getc(fi);
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}
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if (ferror(fi)) {
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perror("read");
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rewind(fi);
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return(fi);
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}
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(void) fflush(nfo);
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if (ferror(nfo)) {
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perror(tempMail);
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(void) Fclose(nfo);
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(void) Fclose(nfi);
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rewind(fi);
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return(fi);
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}
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(void) Fclose(nfo);
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(void) Fclose(fi);
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rewind(nfi);
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return(nfi);
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}
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/*
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* Dump the to, subject, cc header on the
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* passed file buffer.
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*/
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int
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puthead(hp, fo, w)
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struct header *hp;
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FILE *fo;
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int w;
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{
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int gotcha;
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gotcha = 0;
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if (hp->h_to != NIL && w & GTO)
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fmt("To:", hp->h_to, fo, w&GCOMMA), gotcha++;
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if (hp->h_subject != NOSTR && w & GSUBJECT)
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fprintf(fo, "Subject: %s\n", hp->h_subject), gotcha++;
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if (hp->h_cc != NIL && w & GCC)
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fmt("Cc:", hp->h_cc, fo, w&GCOMMA), gotcha++;
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if (hp->h_bcc != NIL && w & GBCC)
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fmt("Bcc:", hp->h_bcc, fo, w&GCOMMA), gotcha++;
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if (gotcha && w & GNL)
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(void) putc('\n', fo);
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return(0);
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}
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/*
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* Format the given header line to not exceed 72 characters.
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*/
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void
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fmt(str, np, fo, comma)
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char *str;
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struct name *np;
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FILE *fo;
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int comma;
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{
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int col, len;
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comma = comma ? 1 : 0;
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col = strlen(str);
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if (col)
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fputs(str, fo);
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for (; np != NIL; np = np->n_flink) {
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if (np->n_flink == NIL)
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comma = 0;
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len = strlen(np->n_name);
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col++; /* for the space */
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if (col + len + comma > 72 && col > 4) {
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fputs("\n ", fo);
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col = 4;
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} else
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putc(' ', fo);
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fputs(np->n_name, fo);
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if (comma)
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putc(',', fo);
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col += len + comma;
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}
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putc('\n', fo);
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}
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/*
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* Save the outgoing mail on the passed file.
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*/
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/*ARGSUSED*/
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int
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savemail(name, fi)
|
|
char name[];
|
|
FILE *fi;
|
|
{
|
|
FILE *fo;
|
|
char buf[BUFSIZ];
|
|
int i;
|
|
time_t now;
|
|
|
|
if ((fo = Fopen(name, "a")) == NULL) {
|
|
perror(name);
|
|
return (-1);
|
|
}
|
|
(void) time(&now);
|
|
fprintf(fo, "From %s %s", myname, ctime(&now));
|
|
while ((i = fread(buf, 1, sizeof buf, fi)) > 0)
|
|
(void) fwrite(buf, 1, i, fo);
|
|
(void) putc('\n', fo);
|
|
(void) fflush(fo);
|
|
if (ferror(fo))
|
|
perror(name);
|
|
(void) Fclose(fo);
|
|
rewind(fi);
|
|
return (0);
|
|
}
|