1 /* 2 * Copyright (c) 1983, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * @(#)get_addrs.c 8.1 (Berkeley) 6/6/93 34 * $FreeBSD: src/usr.bin/talk/get_addrs.c,v 1.4 1999/08/28 01:06:11 peter Exp $ 35 * $DragonFly: src/usr.bin/talk/get_addrs.c,v 1.3 2003/10/04 20:36:52 hmp Exp $ 36 */ 37 38 #include <err.h> 39 #include <netdb.h> 40 #include <string.h> 41 #include "talk.h" 42 #include "talk_ctl.h" 43 44 void 45 get_addrs(char *my_machine_name, char *his_machine_name) 46 { 47 struct hostent *hp; 48 struct servent *sp; 49 50 msg.pid = htonl(getpid()); 51 52 hp = gethostbyname(his_machine_name); 53 if (hp == NULL) 54 errx(1, "%s: %s", his_machine_name, hstrerror(h_errno)); 55 bcopy(hp->h_addr, (char *) &his_machine_addr, hp->h_length); 56 if (get_iface(&his_machine_addr, &my_machine_addr) == -1) 57 err(1, "failed to find my interface address"); 58 /* find the server's port */ 59 sp = getservbyname("ntalk", "udp"); 60 if (sp == 0) 61 errx(1, "ntalk/udp: service is not registered"); 62 daemon_port = sp->s_port; 63 } 64