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/*
* 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 2005 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
#pragma ident "%Z%%M% %I% %E% SMI"
#include "mail.h"
/*
* NAME
* sendlist - send copy to specified users
*
* SYNOPSIS
* int sendlist(reciplist *list, int letnum, int level)
*
* DESCRIPTION
* sendlist() will traverse the current recipient list and
* send a copy of the given letter to each user specified,
* invoking send() to do the sending. It returns
* 1 if the sending fails, 0 otherwise.
*/
/*
* mailx and mailtool read the SENDMAIL from an environment, since few
* people use /bin/mail as their user agent and since /bin/mail is often
* called as root or made setuid it's safer to leave this hardwired.
*/
static char *sendmail_prog = SENDMAIL;
static void notifybiff(char *);
int
sendlist(reciplist *list, int letnum, int level)
{
recip *to;
int rc = 0;
FILE *fp;
int nargs = 4; /* "sendmail", "-oi", "--", .. NULL */
char **argv;
char **p;
/* Deliver mail directly to a mailbox */
if (deliverflag) {
/*
* Note failure to deliver to any one of the recipients
* should be considered a failure, so that the user
* get's an indication of that failure.
*/
for (to = &(list->recip_list); to; to = to->next) {
if (to->name)
if (!send_mbox(to->name, letnum))
rc = 1;
}
return (rc);
}
/*
* build argv list, allowing for arbitrarily long deliver lists
* and then hand the message off to sendmail
*/
if (!ismail)
nargs += 2; /* for "-f", "Rpath" */
for (to = &(list->recip_list); to; to = to->next)
if (to->name)
nargs++;
argv = malloc(nargs * sizeof (char *));
if (argv == NULL)
return (1);
p = argv;
*p++ = sendmail_prog;
/* If we're rmail add "-f", "Rpath" to the the command line */
if (!ismail) {
*p++ = "-f";
*p++ = Rpath;
}
*p++ = "-oi";
*p++ = "--"; /* extra protection: end of argument list */
for (to = &(list->recip_list); to; to = to->next)
if (to->name)
*p++ = to->name;
*p = NULL;
fp = popenvp(sendmail_prog, argv, "w", 0);
free(argv);
if (fp == NULL)
return (1);
copylet(letnum, fp, ORDINARY);
rc = pclosevp(fp);
if (!rc)
return (0);
else
return (1);
}
/*
* send_mbox(user, letnum) Sends the letter specified by letnum to the
* "user"'s mailbox. It returns 1 if the sending fails;
* 0 on success.
*/
int
send_mbox(char *mbox, int letnum)
{
char file[PATH_MAX];
char biffmsg[PATH_MAX];
int mbfd;
FILE *malf;
int rc;
uid_t useruid, saved_uid;
void (*istat)(), (*qstat)(), (*hstat)();
if (!islocal(mbox, &useruid))
return (1);
(void) strlcpy(file, maildir, sizeof (file));
if (strlcat(file, mbox, sizeof (file)) >= sizeof (file)) {
rc = FALSE;
goto done;
}
/*
* We need to setgid and seteuid here since the users's mail box
* might be NFS mounted and since root can't write across NFS.
* Note this won't work with Secure NFS/RPC's. Since delivering to
* NFS mounted directories isn't really supported that's OK for now.
*/
setgid(mailgrp);
saved_uid = geteuid();
seteuid(useruid);
lock(mbox);
/* ignore signals */
istat = signal(SIGINT, SIG_IGN);
qstat = signal(SIGQUIT, SIG_IGN);
hstat = signal(SIGHUP, SIG_IGN);
/* now access mail box */
mbfd = accessmf(file);
if (mbfd == -1) { /* mail box access failed, bail out */
unlock();
rc = FALSE;
sav_errno = EACCES;
goto done;
} else {
/* mail box is ok, now do append */
if ((malf = fdopen(mbfd, "a")) != NULL) {
(void) snprintf(biffmsg, sizeof (biffmsg),
"%s@%d\n", mbox, ftell(malf));
rc = copylet(letnum, malf, ORDINARY);
fclose(malf);
}
}
if (rc == FALSE)
fprintf(stderr, "%s: Cannot append to %s\n", program, file);
else
notifybiff(biffmsg);
done:
/* restore signal */
(void) signal(SIGINT, istat);
(void) signal(SIGQUIT, qstat);
(void) signal(SIGHUP, hstat);
unlock();
seteuid(saved_uid);
return (rc);
}
#include <sys/socket.h>
#include <netinet/in.h>
static void
notifybiff(char *msg)
{
static struct sockaddr_in addr;
static int f = -1;
if (addr.sin_family == 0) {
addr.sin_family = AF_INET;
addr.sin_addr.s_addr = INADDR_LOOPBACK;
addr.sin_port = htons(IPPORT_BIFFUDP);
}
if (f < 0)
f = socket(AF_INET, SOCK_DGRAM, 0);
sendto(f, msg, strlen(msg)+1, 0, (struct sockaddr *)&addr,
sizeof (addr));
}
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