1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License, Version 1.0 only
6 * (the "License"). You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22 /*
23 * Copyright 1997 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 /* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */
28 /* All Rights Reserved */
29
30 /*
31 * University Copyright- Copyright (c) 1982, 1986, 1988
32 * The Regents of the University of California
33 * All Rights Reserved
34 *
35 * University Acknowledgment- Portions of this document are derived from
36 * software developed by the University of California, Berkeley, and its
37 * contributors.
38 */
39
40 #include "talk_ctl.h"
41 #include <locale.h>
42
43 #ifdef SYSV
44 #define bcmp(a, b, c) memcmp((a), (b), (c))
45 #define bcopy(a, b, c) memcpy((b), (a), (c))
46 #endif /* SYSV */
47
48 struct hostent *gethostbyname();
49 struct servent *getservbyname();
50
51 void
get_addrs(my_machine_name,rem_machine_name)52 get_addrs(my_machine_name, rem_machine_name)
53 char *my_machine_name;
54 char *rem_machine_name;
55 {
56 struct hostent *hp;
57 struct servent *sp;
58
59 msg.pid = getpid();
60
61 /* look up the address of the local host */
62
63 hp = gethostbyname(my_machine_name);
64
65 if (hp == (struct hostent *) 0) {
66 fprintf(stderr,
67 gettext("This machine doesn't exist. Boy, am I confused!\n"));
68 exit(1);
69 }
70
71 if (hp->h_addrtype != AF_INET) {
72 fprintf(stderr,
73 gettext("Protocol mix up with local machine address\n"));
74 exit(1);
75 }
76
77 bcopy(hp->h_addr, (char *)&my_machine_addr, hp->h_length);
78
79 /* if on the same machine, then simply copy */
80
81 if (bcmp((char *)&rem_machine_name, (char *)&my_machine_name,
82 sizeof (rem_machine_name)) == 0) {
83 bcopy((char *)&my_machine_addr, (char *)&rem_machine_addr,
84 sizeof (rem_machine_name));
85 } else {
86
87 if ((rem_machine_addr.s_addr =
88 (unsigned long)inet_addr(rem_machine_name)) == -1) {
89
90 /* look up the address of the recipient's machine */
91
92 hp = gethostbyname(rem_machine_name);
93
94 if (hp == (struct hostent *) 0) {
95 fprintf(stderr,
96 gettext("%s is an unknown host\n"), rem_machine_name);
97 exit(1);
98 }
99
100 if (hp->h_addrtype != AF_INET) {
101 fprintf(stderr,
102 gettext("Protocol mix up with remote machine address\n"));
103 exit(1);
104 }
105
106 bcopy(hp->h_addr, (char *) &rem_machine_addr, hp->h_length);
107 }
108 }
109
110
111 /* find the daemon portal */
112
113 #ifdef NTALK
114 sp = getservbyname("ntalk", "udp");
115 #else
116 sp = getservbyname("talk", "udp");
117 #endif
118
119 if (strcmp(sp->s_proto, "udp") != 0) {
120 fprintf(stderr, gettext("Protocol mix up with talk daemon\n"));
121 exit(1);
122 }
123
124 if (sp == 0) {
125 p_error(
126 gettext("This machine doesn't support a tcp talk daemon"));
127 exit(1);
128 }
129
130 daemon_port = sp->s_port;
131 }
132