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Usenet 1994 October
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volume4
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part02
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ctl.c
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C/C++ Source or Header
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1988-05-31
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2KB
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92 lines
#ifndef lint
static char sccsid[] = "@(#)ctl.c 1.1 86/02/05 SMI"; /* from UCB 1.4 83/06/09 */
#endif
/* 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, 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, 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');
}