1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 1983, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 34 __FBSDID("$FreeBSD$"); 35 36 #ifndef lint 37 static const char sccsid[] = "@(#)get_addrs.c 8.1 (Berkeley) 6/6/93"; 38 #endif 39 40 #include <err.h> 41 #include <netdb.h> 42 #include <string.h> 43 #include <unistd.h> 44 45 #include "talk.h" 46 #include "talk_ctl.h" 47 48 void 49 get_addrs(const char *my_machine_name __unused, const char *his_machine_name) 50 { 51 struct hostent *hp; 52 struct servent *sp; 53 54 msg.pid = htonl(getpid()); 55 56 hp = gethostbyname(his_machine_name); 57 if (hp == NULL) 58 errx(1, "%s: %s", his_machine_name, hstrerror(h_errno)); 59 bcopy(hp->h_addr, (char *) &his_machine_addr, hp->h_length); 60 if (get_iface(&his_machine_addr, &my_machine_addr) == -1) 61 err(1, "failed to find my interface address"); 62 /* find the server's port */ 63 sp = getservbyname("ntalk", "udp"); 64 if (sp == NULL) 65 errx(1, "ntalk/udp: service is not registered"); 66 daemon_port = sp->s_port; 67 } 68