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/* $OpenBSD: ctl.c,v 1.13 2016/02/01 07:29:25 mestre Exp $ */ |
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/* $NetBSD: ctl.c,v 1.3 1994/12/09 02:14:10 jtc Exp $ */ |
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/* |
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* Copyright (c) 1983, 1993 |
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* The Regents of the University of California. All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* 3. Neither the name of the University nor the names of its contributors |
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* may be used to endorse or promote products derived from this software |
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* without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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*/ |
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/* |
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* This file handles haggling with the various talk daemons to |
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* get a socket to talk to. sockt is opened and connected in |
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* the progress |
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*/ |
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#include <sys/socket.h> |
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#include <arpa/inet.h> |
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#include "talk.h" |
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struct sockaddr_in daemon_addr = { sizeof(daemon_addr), AF_INET }; |
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struct sockaddr_in ctl_addr = { sizeof(ctl_addr), AF_INET }; |
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struct sockaddr_in my_addr = { sizeof(my_addr), AF_INET }; |
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/* inet addresses of the two machines */ |
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struct in_addr my_machine_addr; |
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struct in_addr his_machine_addr; |
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u_short daemon_port; /* port number of the talk daemon */ |
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int ctl_sockt; |
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int sockt; |
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int invitation_waiting; |
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CTL_MSG msg; |
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void |
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open_sockt(void) |
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{ |
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socklen_t length; |
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my_addr.sin_addr = my_machine_addr; |
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my_addr.sin_port = 0; |
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sockt = socket(AF_INET, SOCK_STREAM, 0); |
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if (sockt == -1) |
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quit("Bad socket", 1); |
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if (bind(sockt, (struct sockaddr *)&my_addr, sizeof(my_addr)) != 0) |
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quit("Binding local socket", 1); |
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length = sizeof(my_addr); |
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if (getsockname(sockt, (struct sockaddr *)&my_addr, &length) == -1) |
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quit("Bad address for socket", 1); |
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} |
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/* open the ctl socket */ |
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void |
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open_ctl(void) |
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{ |
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socklen_t length; |
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ctl_addr.sin_port = 0; |
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ctl_addr.sin_addr = my_machine_addr; |
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ctl_sockt = socket(AF_INET, SOCK_DGRAM, 0); |
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if (ctl_sockt == -1) |
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quit("Bad socket", 1); |
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if (bind(ctl_sockt, |
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(struct sockaddr *)&ctl_addr, sizeof(ctl_addr)) != 0) |
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quit("Couldn't bind to control socket", 1); |
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length = sizeof(ctl_addr); |
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if (getsockname(ctl_sockt, |
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(struct sockaddr *)&ctl_addr, &length) == -1) |
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quit("Bad address for ctl socket", 1); |
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} |