* Copyright (c) 1983 Regents of the University of California.
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
"@(#) Copyright (c) 1983 Regents of the University of California.\n\
static char sccsid
[] = "@(#)talkd.c 5.8 (Berkeley) 2/26/91";
* The top level of the daemon, the format is heavily borrowed
* from rwhod.c. Basically: find out who and where you are;
* disconnect all descriptors and ttys, and then endless
* loop on waiting for and processing requests
#include <protocols/talkd.h>
register CTL_MSG
*mp
= &request
;
fprintf(stderr
, "%s: getuid: not super-user", argv
[0]);
openlog("talkd", LOG_PID
, LOG_DAEMON
);
if (gethostname(hostname
, sizeof (hostname
) - 1) < 0) {
syslog(LOG_ERR
, "gethostname: %m");
if (chdir(_PATH_DEV
) < 0) {
syslog(LOG_ERR
, "chdir: %s: %m", _PATH_DEV
);
if (argc
> 1 && strcmp(argv
[1], "-d") == 0)
signal(SIGALRM
, timeout
);
cc
= recv(0, (char *)mp
, sizeof (*mp
), 0);
if (cc
!= sizeof (*mp
)) {
if (cc
< 0 && errno
!= EINTR
)
syslog(LOG_WARNING
, "recv: %m");
process_request(mp
, &response
);
/* can block here, is this what I want? */
cc
= sendto(sockt
, (char *)&response
,
sizeof (response
), 0, (struct sockaddr
*)&mp
->ctl_addr
,
if (cc
!= sizeof (response
))
syslog(LOG_WARNING
, "sendto: %m");
if (time(0) - lastmsgtime
>= MAXIDLE
)