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Annotation of 43BSD/bin/hostid.c, revision 1.1.1.1

1.1       root        1: /*
                      2:  * Copyright (c) 1983 Regents of the University of California.
                      3:  * All rights reserved.  The Berkeley software License Agreement
                      4:  * specifies the terms and conditions for redistribution.
                      5:  */
                      6: 
                      7: #ifndef lint
                      8: char copyright[] =
                      9: "@(#) Copyright (c) 1983 Regents of the University of California.\n\
                     10:  All rights reserved.\n";
                     11: #endif not lint
                     12: 
                     13: #ifndef lint
                     14: static char sccsid[] = "@(#)hostid.c   5.4 (Berkeley) 5/19/86";
                     15: #endif not lint
                     16: 
                     17: #include <sys/types.h>
                     18: #include <stdio.h>
                     19: #include <ctype.h>
                     20: #include <netdb.h>
                     21: 
                     22: extern char *index();
                     23: extern unsigned long inet_addr();
                     24: extern long gethostid();
                     25: 
                     26: main(argc, argv)
                     27:        int argc;
                     28:        char **argv;
                     29: {
                     30:        register char *id;
                     31:        u_long addr;
                     32:        long hostid;
                     33:        struct hostent *hp;
                     34: 
                     35:        if (argc < 2) {
                     36:                printf("%#x\n", gethostid());
                     37:                exit(0);
                     38:        }
                     39: 
                     40:        id = argv[1];
                     41:        if (hp = gethostbyname(id)) {
                     42:                bcopy(hp->h_addr, &addr, sizeof(addr));
                     43:                hostid = addr;
                     44:        } else if (index(id, '.')) {
                     45:                if ((hostid = inet_addr(id)) == -1)
                     46:                        goto usage;
                     47:        } else {
                     48:                if (id[0] == '0' && (id[1] == 'x' || id[1] == 'X'))
                     49:                        id += 2;
                     50:                if (sscanf(id, "%x", &hostid) != 1) {
                     51: usage:
                     52:                        fprintf(stderr,
                     53:                            "usage: %s [hexnum or internet address]\n",
                     54:                            argv[0]);
                     55:                        exit(1);
                     56:                }
                     57:        }
                     58: 
                     59:        if (sethostid(hostid) < 0) {
                     60:                perror("sethostid");
                     61:                exit(1);
                     62:        }
                     63: 
                     64:        exit(0);
                     65: }

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