BSD 4_3 release

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

/*
* Copyright (c) 1983 Regents of the University of California.
* All rights reserved.  The Berkeley software License Agreement
* specifies the terms and conditions for redistribution.
*/

#ifndef lint
static char sccsid[] = "@(#)ctl.c       5.1 (Berkeley) 6/6/85";
#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');
}