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 34 #ifndef lint 35 static char sccsid[] = "@(#)get_addrs.c 8.1 (Berkeley) 6/6/93"; 36 #endif /* not lint */ 37 38 #include <string.h> 39 #include <netdb.h> 40 #include <stdio.h> 41 #include "talk.h" 42 #include "talk_ctl.h" 43 44 void 45 get_addrs(my_machine_name, his_machine_name) 46 char *my_machine_name, *his_machine_name; 47 { 48 struct hostent *hp; 49 struct servent *sp; 50 51 msg.pid = htonl(getpid()); 52 53 hp = gethostbyname(his_machine_name); 54 if (hp == NULL) { 55 fprintf(stderr, "talk: %s: ", his_machine_name); 56 herror((char *)NULL); 57 exit(-1); 58 } 59 bcopy(hp->h_addr, (char *) &his_machine_addr, hp->h_length); 60 if (get_iface(&his_machine_addr, &my_machine_addr) == -1) { 61 perror("failed to find my interface address"); 62 exit(-1); 63 } 64 /* find the server's port */ 65 sp = getservbyname("ntalk", "udp"); 66 if (sp == 0) { 67 fprintf(stderr, "talk: %s/%s: service is not registered.\n", 68 "ntalk", "udp"); 69 exit(-1); 70 } 71 daemon_port = sp->s_port; 72 } 73