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bcf1365c | 1 | /* |
26cb942b KB |
2 | * Copyright (c) 1983, 1988 Regents of the University of California. |
3 | * All rights reserved. | |
4 | * | |
5 | * Redistribution and use in source and binary forms are permitted | |
b8c620d6 KB |
6 | * provided that the above copyright notice and this paragraph are |
7 | * duplicated in all such forms and that any documentation, | |
8 | * advertising materials, and other materials related to such | |
9 | * distribution and use acknowledge that the software was developed | |
10 | * by the University of California, Berkeley. The name of the | |
11 | * University may not be used to endorse or promote products derived | |
12 | * from this software without specific prior written permission. | |
13 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR | |
14 | * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED | |
15 | * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. | |
bcf1365c DF |
16 | */ |
17 | ||
18 | #ifndef lint | |
19 | char copyright[] = | |
26cb942b | 20 | "@(#) Copyright (c) 1983, 1988 Regents of the University of California.\n\ |
bcf1365c | 21 | All rights reserved.\n"; |
26cb942b | 22 | #endif /* not lint */ |
bcf1365c | 23 | |
205a2d85 | 24 | #ifndef lint |
b8c620d6 | 25 | static char sccsid[] = "@(#)hostid.c 5.6 (Berkeley) %G%"; |
26cb942b | 26 | #endif /* not lint */ |
ca4eabba | 27 | |
ad771da0 | 28 | #include <sys/types.h> |
55b0d21e | 29 | #include <stdio.h> |
ad771da0 | 30 | #include <netdb.h> |
55b0d21e | 31 | |
ca4eabba SL |
32 | main(argc, argv) |
33 | int argc; | |
34 | char **argv; | |
35 | { | |
55b0d21e | 36 | register char *id; |
ad771da0 | 37 | struct hostent *hp; |
26cb942b KB |
38 | u_long addr, inet_addr(); |
39 | long hostid, gethostid(); | |
40 | char *index(); | |
55b0d21e RC |
41 | |
42 | if (argc < 2) { | |
26cb942b | 43 | printf("%#lx\n", gethostid()); |
55b0d21e RC |
44 | exit(0); |
45 | } | |
55b0d21e | 46 | |
3b723ccd MK |
47 | id = argv[1]; |
48 | if (hp = gethostbyname(id)) { | |
49 | bcopy(hp->h_addr, &addr, sizeof(addr)); | |
50 | hostid = addr; | |
51 | } else if (index(id, '.')) { | |
52 | if ((hostid = inet_addr(id)) == -1) | |
53 | goto usage; | |
54 | } else { | |
55 | if (id[0] == '0' && (id[1] == 'x' || id[1] == 'X')) | |
55b0d21e | 56 | id += 2; |
26cb942b KB |
57 | if (sscanf(id, "%lx", &hostid) != 1) { |
58 | usage: fputs("usage: hostid [hexnum or internet address]\n", | |
59 | stderr); | |
3b723ccd | 60 | exit(1); |
55b0d21e RC |
61 | } |
62 | } | |
63 | ||
64 | if (sethostid(hostid) < 0) { | |
65 | perror("sethostid"); | |
66 | exit(1); | |
67 | } | |
ca4eabba | 68 | |
55b0d21e | 69 | exit(0); |
ca4eabba | 70 | } |