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