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/*

 * Copyright (c) 1986, 1993

 *      The Regents of the University of California.  All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 * 1. Redistributions of source code must retain the above copyright

 *    notice, this list of conditions and the following disclaimer.

 * 2. Redistributions in binary form must reproduce the above copyright

 *    notice, this list of conditions and the following disclaimer in the

 *    documentation and/or other materials provided with the distribution.

 * 3. All advertising materials mentioning features or use of this software

 *    must display the following acknowledgement:

 *      This product includes software developed by the University of

 *      California, Berkeley and its contributors.

 * 4. Neither the name of the University nor the names of its contributors

 *    may be used to endorse or promote products derived from this software

 *    without specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND

 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE

 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS

 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY

 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF

 * SUCH DAMAGE.

 *

 *  $Id: ns_ntoa.c,v 1.2 2001-09-27 12:01:53 chris Exp $

 */

#if defined(LIBC_SCCS) && !defined(lint)

static char sccsid[] = "@(#)ns_ntoa.c   8.1 (Berkeley) 6/4/93";

#endif /* LIBC_SCCS and not lint */

#include <sys/param.h>

#include <netns/ns.h>

#include <stdio.h>

char *

ns_ntoa(addr)

        struct ns_addr addr;

{

        static char obuf[40];

        union { union ns_net net_e; u_long long_e; } net;

        u_short port = htons(addr.x_port);

        register char *cp;

        char *cp2;

        register u_char *up = addr.x_host.c_host;

        u_char *uplim = up + 6;

        static char *spectHex();

        net.net_e = addr.x_net;

        sprintf(obuf, "%lx", (u_long)ntohl(net.long_e));

        cp = spectHex(obuf);

        cp2 = cp + 1;

        while (*up==0 && up < uplim) up++;

        if (up == uplim) {

                if (port) {

                        sprintf(cp, ".0");

                        cp += 2;

                }

        } else {

                sprintf(cp, ".%x", *up++);

                while (up < uplim) {

                        while (*cp) cp++;

                        sprintf(cp, "%02x", *up++);

                }

                cp = spectHex(cp2);

        }

        if (port) {

                sprintf(cp, ".%x", port);

                spectHex(cp + 1);

        }

        return (obuf);

}

static char *

spectHex(p0)

        char *p0;

{

        int ok = 0;

        int nonzero = 0;

        register char *p = p0;

        for (; *p; p++) switch (*p) {

        case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':

                *p += ('A' - 'a');

                /* fall into . . . */

        case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':

                ok = 1;

        case '1': case '2': case '3': case '4': case '5':

        case '6': case '7': case '8': case '9':

                nonzero = 1;

        }

        if (nonzero && !ok) { *p++ = 'H'; *p = 0; }

        return (p);

}