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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 1994 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */
/* All Rights Reserved */
/*
* University Copyright- Copyright (c) 1982, 1986, 1988
* The Regents of the University of California
* All Rights Reserved
*
* University Acknowledgment- Portions of this document are derived from
* software developed by the University of California, Berkeley, and its
* contributors.
*/
/*
* Copyright (c) 2016 by Delphix. All rights reserved.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#include "talk_ctl.h"
#include <sys/time.h>
#include <signal.h>
#include <setjmp.h>
#include <libintl.h>
#ifdef SYSV
#define signal(s, f) sigset(s, f)
#endif /* SYSV */
/*
* There wasn't an invitation waiting, so send a request containing
* our socket address to the remote talk daemon so it can invite
* the remote.
*/
static int local_id, remote_id;
/*
* the msg.id's for the invitations
* on the local and remote machines.
* These are used to delete the invitations.
*/
static jmp_buf invitebuf;
static void re_invite();
static void announce_invite();
void
invite_remote()
{
int new_sockt;
struct itimerval itimer;
CTL_RESPONSE response;
itimer.it_value.tv_sec = RING_WAIT;
itimer.it_value.tv_usec = 0;
itimer.it_interval = itimer.it_value;
if (listen(sockt, 5) != 0) {
p_error(gettext("Error on attempt to listen for caller"));
}
msg.addr = my_addr;
msg.id_num = -1; /* an impossible id_num */
invitation_waiting = 1;
announce_invite();
/*
* shut off the automatic messages for a while,
* so we can use the interupt timer to resend the invitation
*/
end_msgs();
setitimer(ITIMER_REAL, &itimer, (struct itimerval *)0);
message(gettext("Waiting for your party to respond"));
signal(SIGALRM, re_invite);
(void) setjmp(invitebuf);
while ((new_sockt = accept(sockt, 0, 0)) < 0) {
if (errno != EINTR) {
p_error(gettext("Unable to connect with your party"));
} else {
/* we just returned from a interupt, keep trying */
continue;
}
}
close(sockt);
sockt = new_sockt;
/*
* have the daemons delete the invitations now that we have connected.
*/
current_state = strdup(gettext("Waiting for your party to respond"));
start_msgs();
msg.id_num = local_id;
ctl_transact(my_machine_addr, msg, DELETE, &response);
msg.id_num = remote_id;
ctl_transact(rem_machine_addr, msg, DELETE, &response);
invitation_waiting = 0;
}
/* routine called on interupt to re-invite the callee */
static void
re_invite()
{
message(gettext("Ringing your party again"));
current_line++;
/* force a re-announce */
msg.id_num = remote_id + 1;
announce_invite();
longjmp(invitebuf, 1);
}
/* transmit the invitation and process the response */
static void
announce_invite()
{
CTL_RESPONSE response;
current_state =
gettext("Trying to connect to your party's talk daemon");
ctl_transact(rem_machine_addr, msg, ANNOUNCE, &response);
remote_id = response.id_num;
if (response.answer != SUCCESS) {
switch (response.answer) {
case NOT_HERE :
message(gettext("Your party is not logged on"));
break;
case MACHINE_UNKNOWN :
message(
gettext("Target machine does not recognize us"));
break;
case UNKNOWN_REQUEST :
message(
gettext("Target machine can not handle remote talk"));
break;
case FAILED :
message(
gettext("Target machine is too confused to talk to us"));
break;
case PERMISSION_DENIED :
message(gettext("Your party is refusing messages"));
break;
}
quit();
}
/* leave the actual invitation on my talk daemon */
ctl_transact(my_machine_addr, msg, LEAVE_INVITE, &response);
local_id = response.id_num;
}
void
send_delete()
{
/* tell the daemon to remove your invitation */
msg.type = DELETE;
/*
* this is just a extra clean up, so just send it
* and don't wait for an answer
*/
msg.id_num = remote_id;
daemon_addr.sin_addr = rem_machine_addr;
if (sendto(ctl_sockt, (char *)&msg, sizeof (CTL_MSG), 0,
(struct sockaddr *)&daemon_addr,
sizeof (daemon_addr)) != sizeof (CTL_MSG)) {
perror(gettext("send_delete remote"));
}
msg.id_num = local_id;
daemon_addr.sin_addr = my_machine_addr;
if (sendto(ctl_sockt, (char *)&msg, sizeof (CTL_MSG), 0,
(struct sockaddr *)&daemon_addr,
sizeof (daemon_addr)) != sizeof (CTL_MSG)) {
perror(gettext("send_delete local"));
}
}
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