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Annotation of 43BSDTahoe/bin/hostid.c, revision 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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