/* * Copyright (c) 1983, 1993 * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include <sys/cdefs.h> __FBSDID("$FreeBSD$"); #ifndef lint static const char sccsid[] = "@(#)ctl.c 8.1 (Berkeley) 6/6/93"; #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 <sys/types.h> #include <sys/socket.h> #include "talk.h" struct sockaddr_in daemon_addr = { sizeof(daemon_addr), AF_INET }; struct sockaddr_in ctl_addr = { sizeof(ctl_addr), AF_INET }; struct sockaddr_in my_addr = { sizeof(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; void open_sockt() { int length; (void)memset(&my_addr, 0, sizeof(my_addr)); my_addr.sin_family = AF_INET; my_addr.sin_len = sizeof(my_addr); 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, (struct sockaddr *)&my_addr, sizeof(my_addr)) != 0) p_error("Binding local socket"); length = sizeof(my_addr); if (getsockname(sockt, (struct sockaddr *)&my_addr, &length) == -1) p_error("Bad address for socket"); } /* open the ctl socket */ void open_ctl() { int length; (void)memset(&ctl_addr, 0, sizeof(ctl_addr)); ctl_addr.sin_family = AF_INET; ctl_addr.sin_len = sizeof(my_addr); 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, (struct sockaddr *)&ctl_addr, sizeof(ctl_addr)) != 0) p_error("Couldn't bind to control socket"); length = sizeof(ctl_addr); if (getsockname(ctl_sockt, (struct sockaddr *)&ctl_addr, &length) == -1) p_error("Bad address for ctl socket"); } /* print_addr is a debug print routine */ void print_addr(addr) struct sockaddr_in addr; { int i; printf("addr = %lx, port = %o, family = %o zero = ", (u_long)addr.sin_addr.s_addr, addr.sin_port, addr.sin_family); for (i = 0; i<8;i++) printf("%o ", (int)addr.sin_zero[i]); putchar('\n'); }