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Annotation of 43BSDReno/old/hostid/hostid.c, revision 1.1.1.1

1.1       root        1: /*
                      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
                      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.
                     16:  */
                     17: 
                     18: #ifndef lint
                     19: char copyright[] =
                     20: "@(#) Copyright (c) 1983, 1988 Regents of the University of California.\n\
                     21:  All rights reserved.\n";
                     22: #endif /* not lint */
                     23: 
                     24: #ifndef lint
                     25: static char sccsid[] = "@(#)hostid.c   5.6 (Berkeley) 6/18/88";
                     26: #endif /* not lint */
                     27: 
                     28: #include <sys/types.h>
                     29: #include <stdio.h>
                     30: #include <netdb.h>
                     31: 
                     32: main(argc, argv)
                     33:        int argc;
                     34:        char **argv;
                     35: {
                     36:        register char *id;
                     37:        struct hostent *hp;
                     38:        u_long addr, inet_addr();
                     39:        long hostid, gethostid();
                     40:        char *index();
                     41: 
                     42:        if (argc < 2) {
                     43:                printf("%#lx\n", gethostid());
                     44:                exit(0);
                     45:        }
                     46: 
                     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'))
                     56:                        id += 2;
                     57:                if (sscanf(id, "%lx", &hostid) != 1) {
                     58: usage:                 fputs("usage: hostid [hexnum or internet address]\n",
                     59:                            stderr);
                     60:                        exit(1);
                     61:                }
                     62:        }
                     63: 
                     64:        if (sethostid(hostid) < 0) {
                     65:                perror("sethostid");
                     66:                exit(1);
                     67:        }
                     68: 
                     69:        exit(0);
                     70: }

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