Commit | Line | Data |
---|---|---|
31c4d32d WJ |
1 | /* |
2 | * Copyright (c) 1983 Regents of the University of California. | |
3 | * 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 5.7 (Berkeley) 3/1/91"; | |
36 | #endif /* not lint */ | |
37 | ||
38 | #include <sys/types.h> | |
39 | #include <sys/socket.h> | |
40 | #include <netinet/in.h> | |
41 | #include <protocols/talkd.h> | |
42 | #include <netdb.h> | |
43 | #include <stdio.h> | |
44 | #include "talk_ctl.h" | |
45 | ||
46 | get_addrs(my_machine_name, his_machine_name) | |
47 | char *my_machine_name, *his_machine_name; | |
48 | { | |
49 | struct hostent *hp; | |
50 | struct servent *sp; | |
51 | ||
52 | msg.pid = htonl(getpid()); | |
53 | /* look up the address of the local host */ | |
54 | hp = gethostbyname(my_machine_name); | |
55 | if (hp == NULL) { | |
56 | fprintf(stderr, "talk: %s: ", my_machine_name); | |
57 | herror((char *)NULL); | |
58 | exit(-1); | |
59 | } | |
60 | bcopy(hp->h_addr, (char *)&my_machine_addr, hp->h_length); | |
61 | /* | |
62 | * If the callee is on-machine, just copy the | |
63 | * network address, otherwise do a lookup... | |
64 | */ | |
65 | if (strcmp(his_machine_name, my_machine_name)) { | |
66 | hp = gethostbyname(his_machine_name); | |
67 | if (hp == NULL) { | |
68 | fprintf(stderr, "talk: %s: ", his_machine_name); | |
69 | herror((char *)NULL); | |
70 | exit(-1); | |
71 | } | |
72 | bcopy(hp->h_addr, (char *) &his_machine_addr, hp->h_length); | |
73 | } else | |
74 | his_machine_addr = my_machine_addr; | |
75 | /* find the server's port */ | |
76 | sp = getservbyname("ntalk", "udp"); | |
77 | if (sp == 0) { | |
78 | fprintf(stderr, "talk: %s/%s: service is not registered.\n", | |
79 | "ntalk", "udp"); | |
80 | exit(-1); | |
81 | } | |
82 | daemon_port = sp->s_port; | |
83 | } |