get_addrs.c revision 200418
11590Srgrimes/* 21590Srgrimes * Copyright (c) 1983, 1993 31590Srgrimes * The Regents of the University of California. All rights reserved. 41590Srgrimes * 51590Srgrimes * Redistribution and use in source and binary forms, with or without 61590Srgrimes * modification, are permitted provided that the following conditions 71590Srgrimes * are met: 81590Srgrimes * 1. Redistributions of source code must retain the above copyright 91590Srgrimes * notice, this list of conditions and the following disclaimer. 101590Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 111590Srgrimes * notice, this list of conditions and the following disclaimer in the 121590Srgrimes * documentation and/or other materials provided with the distribution. 131590Srgrimes * 3. All advertising materials mentioning features or use of this software 141590Srgrimes * must display the following acknowledgement: 151590Srgrimes * This product includes software developed by the University of 161590Srgrimes * California, Berkeley and its contributors. 171590Srgrimes * 4. Neither the name of the University nor the names of its contributors 181590Srgrimes * may be used to endorse or promote products derived from this software 191590Srgrimes * without specific prior written permission. 201590Srgrimes * 211590Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 221590Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 231590Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 241590Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 251590Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 261590Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 271590Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 281590Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 291590Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 301590Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 311590Srgrimes * SUCH DAMAGE. 321590Srgrimes */ 331590Srgrimes 3487710Smarkm#include <sys/cdefs.h> 3587710Smarkm 3687710Smarkm__FBSDID("$FreeBSD: head/usr.bin/talk/get_addrs.c 200418 2009-12-11 23:23:57Z delphij $"); 3787710Smarkm 381590Srgrimes#ifndef lint 3987710Smarkmstatic const char sccsid[] = "@(#)get_addrs.c 8.1 (Berkeley) 6/6/93"; 4032503Scharnier#endif 411590Srgrimes 4232503Scharnier#include <err.h> 4332503Scharnier#include <netdb.h> 4414443Sjoerg#include <string.h> 45200418Sdelphij#include <unistd.h> 4687710Smarkm 4714443Sjoerg#include "talk.h" 481590Srgrimes#include "talk_ctl.h" 491590Srgrimes 5014443Sjoergvoid 51178642Sdelphijget_addrs(const char *my_machine_name __unused, const char *his_machine_name) 521590Srgrimes{ 531590Srgrimes struct hostent *hp; 541590Srgrimes struct servent *sp; 551590Srgrimes 561590Srgrimes msg.pid = htonl(getpid()); 5714443Sjoerg 5814443Sjoerg hp = gethostbyname(his_machine_name); 5932503Scharnier if (hp == NULL) 6032503Scharnier errx(1, "%s: %s", his_machine_name, hstrerror(h_errno)); 6114443Sjoerg bcopy(hp->h_addr, (char *) &his_machine_addr, hp->h_length); 6232503Scharnier if (get_iface(&his_machine_addr, &my_machine_addr) == -1) 6332503Scharnier err(1, "failed to find my interface address"); 641590Srgrimes /* find the server's port */ 651590Srgrimes sp = getservbyname("ntalk", "udp"); 6632503Scharnier if (sp == 0) 6732503Scharnier errx(1, "ntalk/udp: service is not registered"); 681590Srgrimes daemon_port = sp->s_port; 691590Srgrimes} 70