BSD 4_3_Tahoe release

[unix-history] / usr / src / ucb / talk / ctl.c

/*
* Copyright (c) 1983 Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms are permitted
* provided that the above copyright notice and this paragraph are
* duplicated in all such forms and that any documentation,
* advertising materials, and other materials related to such
* distribution and use acknowledge that the software was developed
* by the University of California, Berkeley.  The name of the
* University may not be used to endorse or promote products derived
* from this software without specific prior written permission.
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/

#ifndef lint
static char sccsid[] = "@(#)ctl.c       5.4 (Berkeley) 6/29/88";
#endif /* not lint */

/*
* This file handles haggling with the various talk daemons to
* get a socket to talk to. sockt is opened and connected in
* the progress
*/

#include "talk_ctl.h"

struct  sockaddr_in daemon_addr = { AF_INET };
struct  sockaddr_in ctl_addr = { AF_INET };
struct  sockaddr_in my_addr = { AF_INET };

       /* inet addresses of the two machines */
struct  in_addr my_machine_addr;
struct  in_addr his_machine_addr;

u_short daemon_port;    /* port number of the talk daemon */

int     ctl_sockt;
int     sockt;
int     invitation_waiting = 0;

CTL_MSG msg;

open_sockt()
{
       int length;

       my_addr.sin_addr = my_machine_addr;
       my_addr.sin_port = 0;
       sockt = socket(AF_INET, SOCK_STREAM, 0);
       if (sockt <= 0)
               p_error("Bad socket");
       if (bind(sockt, &my_addr, sizeof(my_addr)) != 0)
               p_error("Binding local socket");
       length = sizeof(my_addr);
       if (getsockname(sockt, &my_addr, &length) == -1)
               p_error("Bad address for socket");
}

/* open the ctl socket */
open_ctl() 
{
       int length;

       ctl_addr.sin_port = 0;
       ctl_addr.sin_addr = my_machine_addr;
       ctl_sockt = socket(AF_INET, SOCK_DGRAM, 0);
       if (ctl_sockt <= 0)
               p_error("Bad socket");
       if (bind(ctl_sockt, &ctl_addr, sizeof(ctl_addr), 0) != 0)
               p_error("Couldn't bind to control socket");
       length = sizeof(ctl_addr);
       if (getsockname(ctl_sockt, &ctl_addr, &length) == -1)
               p_error("Bad address for ctl socket");
}

/* print_addr is a debug print routine */
print_addr(addr)
       struct sockaddr_in addr;
{
       int i;

       printf("addr = %x, port = %o, family = %o zero = ",
               addr.sin_addr, addr.sin_port, addr.sin_family);
       for (i = 0; i<8;i++)
       printf("%o ", (int)addr.sin_zero[i]);
       putchar('\n');
}