/********************************************************************** * Copyright (c) Digital Equipment Corporation 1984, 1985, 1986. * * All Rights Reserved. * * Reference "/usr/src/COPYRIGHT" for applicable restrictions. * **********************************************************************/ static char *Sccsid = "@(#)ctl.c 3.0 (ULTRIX-11) 4/22/86"; /* 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'); }