[dragonfly.git] / usr.bin / talk / invite.c

/*
 * Copyright (c) 1983, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 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
 * SUCH DAMAGE.
 *
 * @(#)invite.c	8.1 (Berkeley) 6/6/93
 * $FreeBSD: src/usr.bin/talk/invite.c,v 1.6.2.1 2000/10/05 17:40:38 ru Exp $
 */

#include <sys/param.h>
#include <sys/socket.h>
#include <err.h>
#include <errno.h>
#include <setjmp.h>
#include <signal.h>
#include <protocols/talkd.h>
#include "talk_ctl.h"
#include "talk.h"

/*
 * There wasn't an invitation waiting, so send a request containing
 * our sockt address to the remote talk daemon so it can invite
 * him
 */

/*
 * The msg.id's for the invitations
 * on the local and remote machines.
 * These are used to delete the
 * invitations.
 */
int	local_id, remote_id;
jmp_buf invitebuf;

void
invite_remote(void)
{
	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("Error on attempt to listen for caller");
#ifdef MSG_EOR
	/* copy new style sockaddr to old, swap family (short in old) */
	msg.addr = *(struct osockaddr *)&my_addr;  /* XXX new to old  style*/
	msg.addr.sa_family = htons(my_addr.sin_family);
#else
	msg.addr = *(struct sockaddr *)&my_addr;
#endif
	msg.id_num = htonl(-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, NULL);
	message("Waiting for your party to respond");
	signal(SIGALRM, re_invite);
	(void) setjmp(invitebuf);
	while ((new_sockt = accept(sockt, 0, 0)) < 0) {
		if (errno == EINTR)
			continue;
		p_error("Unable to connect with your party");
	}
	close(sockt);
	sockt = new_sockt;

	/*
	 * Have the daemons delete the invitations now that we
	 * have connected.
	 */
	current_state = "Waiting for your party to respond";
	start_msgs();

	msg.id_num = htonl(local_id);
	ctl_transact(my_machine_addr, msg, DELETE, &response);
	msg.id_num = htonl(remote_id);
	ctl_transact(his_machine_addr, msg, DELETE, &response);
	invitation_waiting = 0;
}

/*
 * Routine called on interupt to re-invite the callee
 */
/* ARGSUSED */
void
re_invite(int signo __unused)
{

	message("Ringing your party again");
	waddch(my_win.x_win, '\n');
	if (current_line < my_win.x_nlines - 1)
		current_line++;
	/* force a re-announce */
	msg.id_num = htonl(remote_id + 1);
	announce_invite();
	longjmp(invitebuf, 1);
}

static	const char *answers[] = {
	"answer #0",					/* SUCCESS */
	"Your party is not logged on",			/* NOT_HERE */
	"Target machine is too confused to talk to us",	/* FAILED */
	"Target machine does not recognize us",		/* MACHINE_UNKNOWN */
	"Your party is refusing messages",		/* PERMISSION_REFUSED */
	"Target machine can not handle remote talk",	/* UNKNOWN_REQUEST */
	"Target machine indicates protocol mismatch",	/* BADVERSION */
	"Target machine indicates protocol botch (addr)",/* BADADDR */
	"Target machine indicates protocol botch (ctl_addr)",/* BADCTLADDR */
};
#define	NANSWERS	(sizeof (answers) / sizeof (answers[0]))

/*
 * Transmit the invitation and process the response
 */
void
announce_invite(void)
{
	CTL_RESPONSE response;

	current_state = "Trying to connect to your party's talk daemon";
	ctl_transact(his_machine_addr, msg, ANNOUNCE, &response);
	remote_id = response.id_num;
	if (response.answer != SUCCESS) {
		if (response.answer < NANSWERS)
			message(answers[response.answer]);
		quit();
	}
	/* leave the actual invitation on my talk daemon */
	current_state = "Trying to connect to local talk daemon";
	ctl_transact(my_machine_addr, msg, LEAVE_INVITE, &response);
	local_id = response.id_num;
}

/*
 * Tell the daemon to remove your invitation
 */
void
send_delete(void)
{

	msg.type = DELETE;
	/*
	 * This is just a extra clean up, so just send it
	 * and don't wait for an answer
	 */
	msg.id_num = htonl(remote_id);
	daemon_addr.sin_addr = his_machine_addr;
	if (sendto(ctl_sockt, &msg, sizeof (msg), 0,
	    (struct sockaddr *)&daemon_addr,
	    sizeof (daemon_addr)) != sizeof(msg))
		warn("send_delete (remote)");
	msg.id_num = htonl(local_id);
	daemon_addr.sin_addr = my_machine_addr;
	if (sendto(ctl_sockt, &msg, sizeof (msg), 0,
	    (struct sockaddr *)&daemon_addr,
	    sizeof (daemon_addr)) != sizeof (msg))
		warn("send_delete (local)");
}
Commit	Line	Data
984263bc MD	1	/*
	2	* Copyright (c) 1983, 1993
	3	* The Regents of the University of California. All rights reserved.
	4	*
	5	* Redistribution and use in source and binary forms, with or without
	6	* modification, are permitted provided that the following conditions
	7	* are met:
	8	* 1. Redistributions of source code must retain the above copyright
	9	* notice, this list of conditions and the following disclaimer.
	10	* 2. Redistributions in binary form must reproduce the above copyright
	11	* notice, this list of conditions and the following disclaimer in the
	12	* documentation and/or other materials provided with the distribution.
	13	* 3. All advertising materials mentioning features or use of this software
	14	* must display the following acknowledgement:
	15	* This product includes software developed by the University of
	16	* California, Berkeley and its contributors.
	17	* 4. Neither the name of the University nor the names of its contributors
	18	* may be used to endorse or promote products derived from this software
	19	* without specific prior written permission.
	20	*
	21	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	22	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	23	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	24	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	25	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	26	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	27	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	28	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	29	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	30	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	31	* SUCH DAMAGE.
1de703da MD	32	*
	33	* @(#)invite.c 8.1 (Berkeley) 6/6/93
	34	* $FreeBSD: src/usr.bin/talk/invite.c,v 1.6.2.1 2000/10/05 17:40:38 ru Exp $
984263bc MD	35	*/
984263bc MD	36
800c4f63 JS	37	#include <sys/param.h>
800c4f63 JS	38	#include <sys/socket.h>
984263bc MD	39	#include <err.h>
	40	#include <errno.h>
	41	#include <setjmp.h>
	42	#include <signal.h>
984263bc MD	43	#include <protocols/talkd.h>
	44	#include "talk_ctl.h"
	45	#include "talk.h"
	46
	47	/*
	48	* There wasn't an invitation waiting, so send a request containing
	49	* our sockt address to the remote talk daemon so it can invite
	50	* him
	51	*/
	52
	53	/*
	54	* The msg.id's for the invitations
	55	* on the local and remote machines.
	56	* These are used to delete the
	57	* invitations.
	58	*/
	59	int local_id, remote_id;
	60	jmp_buf invitebuf;
	61
	62	void
1d1731fa	63	invite_remote(void)
984263bc	64	{
e2daa382	65	int new_sockt;
984263bc MD	66	struct itimerval itimer;
	67	CTL_RESPONSE response;
	68
	69	itimer.it_value.tv_sec = RING_WAIT;
	70	itimer.it_value.tv_usec = 0;
	71	itimer.it_interval = itimer.it_value;
	72	if (listen(sockt, 5) != 0)
	73	p_error("Error on attempt to listen for caller");
	74	#ifdef MSG_EOR
	75	/* copy new style sockaddr to old, swap family (short in old) */
	76	msg.addr = (struct osockaddr )&my_addr; /* XXX new to old style*/
	77	msg.addr.sa_family = htons(my_addr.sin_family);
	78	#else
	79	msg.addr = (struct sockaddr )&my_addr;
	80	#endif
	81	msg.id_num = htonl(-1); /* an impossible id_num */
	82	invitation_waiting = 1;
	83	announce_invite();
	84	/*
	85	* Shut off the automatic messages for a while,
	86	* so we can use the interupt timer to resend the invitation
	87	*/
	88	end_msgs();
60233e58	89	setitimer(ITIMER_REAL, &itimer, NULL);
984263bc MD	90	message("Waiting for your party to respond");
	91	signal(SIGALRM, re_invite);
	92	(void) setjmp(invitebuf);
	93	while ((new_sockt = accept(sockt, 0, 0)) < 0) {
	94	if (errno == EINTR)
	95	continue;
	96	p_error("Unable to connect with your party");
	97	}
	98	close(sockt);
	99	sockt = new_sockt;
	100
	101	/*
	102	* Have the daemons delete the invitations now that we
	103	* have connected.
	104	*/
	105	current_state = "Waiting for your party to respond";
	106	start_msgs();
	107
	108	msg.id_num = htonl(local_id);
	109	ctl_transact(my_machine_addr, msg, DELETE, &response);
	110	msg.id_num = htonl(remote_id);
	111	ctl_transact(his_machine_addr, msg, DELETE, &response);
	112	invitation_waiting = 0;
	113	}
	114
	115	/*
	116	* Routine called on interupt to re-invite the callee
	117	*/
	118	/* ARGSUSED */
	119	void
e2daa382	120	re_invite(int signo __unused)
984263bc MD	121	{
	122
	123	message("Ringing your party again");
	124	waddch(my_win.x_win, '\n');
	125	if (current_line < my_win.x_nlines - 1)
	126	current_line++;
	127	/* force a re-announce */
	128	msg.id_num = htonl(remote_id + 1);
	129	announce_invite();
	130	longjmp(invitebuf, 1);
	131	}
	132
e2daa382	133	static const char *answers[] = {
984263bc MD	134	"answer #0", /* SUCCESS */
	135	"Your party is not logged on", /* NOT_HERE */
	136	"Target machine is too confused to talk to us", /* FAILED */
	137	"Target machine does not recognize us", /* MACHINE_UNKNOWN */
	138	"Your party is refusing messages", /* PERMISSION_REFUSED */
	139	"Target machine can not handle remote talk", /* UNKNOWN_REQUEST */
	140	"Target machine indicates protocol mismatch", /* BADVERSION */
	141	"Target machine indicates protocol botch (addr)",/* BADADDR */
	142	"Target machine indicates protocol botch (ctl_addr)",/* BADCTLADDR */
	143	};
	144	#define NANSWERS (sizeof (answers) / sizeof (answers[0]))
	145
	146	/*
	147	* Transmit the invitation and process the response
	148	*/
	149	void
1d1731fa	150	announce_invite(void)
984263bc MD	151	{
	152	CTL_RESPONSE response;
	153
	154	current_state = "Trying to connect to your party's talk daemon";
	155	ctl_transact(his_machine_addr, msg, ANNOUNCE, &response);
	156	remote_id = response.id_num;
	157	if (response.answer != SUCCESS) {
	158	if (response.answer < NANSWERS)
	159	message(answers[response.answer]);
	160	quit();
	161	}
	162	/* leave the actual invitation on my talk daemon */
	163	current_state = "Trying to connect to local talk daemon";
	164	ctl_transact(my_machine_addr, msg, LEAVE_INVITE, &response);
	165	local_id = response.id_num;
	166	}
	167
	168	/*
	169	* Tell the daemon to remove your invitation
	170	*/
	171	void
1d1731fa	172	send_delete(void)
984263bc MD	173	{
	174
	175	msg.type = DELETE;
	176	/*
	177	* This is just a extra clean up, so just send it
	178	* and don't wait for an answer
	179	*/
	180	msg.id_num = htonl(remote_id);
	181	daemon_addr.sin_addr = his_machine_addr;
	182	if (sendto(ctl_sockt, &msg, sizeof (msg), 0,
	183	(struct sockaddr *)&daemon_addr,
	184	sizeof (daemon_addr)) != sizeof(msg))
	185	warn("send_delete (remote)");
	186	msg.id_num = htonl(local_id);
	187	daemon_addr.sin_addr = my_machine_addr;
	188	if (sendto(ctl_sockt, &msg, sizeof (msg), 0,
	189	(struct sockaddr *)&daemon_addr,
	190	sizeof (daemon_addr)) != sizeof (msg))
	191	warn("send_delete (local)");
	192	}