Home | History | Annotate | Line # | Download | only in talk
ctl.c revision 1.5 
      1 /*	$NetBSD: ctl.c,v 1.5 2000/03/02 17:37:46 christos Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1983, 1993
      5  *	The Regents of the University of California.  All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *	This product includes software developed by the University of
     18  *	California, Berkeley and its contributors.
     19  * 4. Neither the name of the University nor the names of its contributors
     20  *    may be used to endorse or promote products derived from this software
     21  *    without specific prior written permission.
     22  *
     23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     33  * SUCH DAMAGE.
     34  */
     35 
     36 #include <sys/cdefs.h>
     37 #ifndef lint
     38 #if 0
     39 static char sccsid[] = "@(#)ctl.c	8.1 (Berkeley) 6/6/93";
     40 #endif
     41 __RCSID("$NetBSD: ctl.c,v 1.5 2000/03/02 17:37:46 christos Exp $");
     42 #endif /* not lint */
     43 
     44 /*
     45  * This file handles haggling with the various talk daemons to
     46  * get a socket to talk to. sockt is opened and connected in
     47  * the progress
     48  */
     49 
     50 #include "talk.h"
     51 #include <arpa/inet.h>
     52 #include "talk_ctl.h"
     53 
     54 struct	sockaddr_in daemon_addr = { sizeof(daemon_addr), AF_INET };
     55 struct	sockaddr_in ctl_addr = { sizeof(ctl_addr), AF_INET };
     56 struct	sockaddr_in my_addr = { sizeof(my_addr), AF_INET };
     57 
     58 	/* inet addresses of the two machines */
     59 struct	in_addr my_machine_addr;
     60 struct	in_addr his_machine_addr;
     61 
     62 u_short daemon_port;	/* port number of the talk daemon */
     63 
     64 int	ctl_sockt;
     65 int	sockt;
     66 int	invitation_waiting = 0;
     67 
     68 CTL_MSG msg;
     69 
     70 void
     71 open_sockt()
     72 {
     73 	int length;
     74 
     75 
     76 	(void)memset(&my_addr, 0, sizeof(my_addr));
     77 	my_addr.sin_family = AF_INET;
     78 #ifdef BSD4_4
     79 	my_addr.sin_len = sizeof(my_addr);
     80 #endif
     81 	my_addr.sin_addr = my_machine_addr;
     82 	my_addr.sin_port = 0;
     83 	sockt = socket(AF_INET, SOCK_STREAM, 0);
     84 	if (sockt <= 0)
     85 		p_error("Bad socket");
     86 	if (bind(sockt, (struct sockaddr *)&my_addr, sizeof(my_addr)) != 0)
     87 		p_error("Binding local socket");
     88 	length = sizeof(my_addr);
     89 	if (getsockname(sockt, (struct sockaddr *)&my_addr, &length) == -1)
     90 		p_error("Bad address for socket");
     91 }
     92 
     93 /* open the ctl socket */
     94 void
     95 open_ctl()
     96 {
     97 	int length;
     98 
     99 	(void)memset(&ctl_addr, 0, sizeof(ctl_addr));
    100 	ctl_addr.sin_family = AF_INET;
    101 #ifdef BSD4_4
    102 	ctl_addr.sin_len = sizeof(my_addr);
    103 #endif
    104 	ctl_addr.sin_port = 0;
    105 	ctl_addr.sin_addr = my_machine_addr;
    106 	ctl_sockt = socket(AF_INET, SOCK_DGRAM, 0);
    107 	if (ctl_sockt <= 0)
    108 		p_error("Bad socket");
    109 	if (bind(ctl_sockt,
    110 	    (struct sockaddr *)&ctl_addr, sizeof(ctl_addr)) != 0)
    111 		p_error("Couldn't bind to control socket");
    112 	length = sizeof(ctl_addr);
    113 	if (getsockname(ctl_sockt,
    114 	    (struct sockaddr *)&ctl_addr, &length) == -1)
    115 		p_error("Bad address for ctl socket");
    116 }
    117 
    118 /* print_addr is a debug print routine */
    119 void
    120 print_addr(addr)
    121 	struct sockaddr_in addr;
    122 {
    123 	int i;
    124 
    125 	printf("addr = %s, port = %o, family = %o zero = ",
    126 		inet_ntoa(addr.sin_addr), addr.sin_port, addr.sin_family);
    127 	for (i = 0; i<8;i++)
    128 	printf("%o ", (int)addr.sin_zero[i]);
    129 	putchar('\n');
    130 }
    131