112 lines
3.2 KiB
C
112 lines
3.2 KiB
C
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/* $NetBSD: compat_ns_ntoa.c,v 1.1 2006/08/26 16:07:01 matt Exp $ */
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/*
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* Copyright (c) 1986, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#if defined(LIBC_SCCS) && !defined(lint)
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#if 0
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static char sccsid[] = "@(#)ns_ntoa.c 8.1 (Berkeley) 6/4/93";
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#else
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__RCSID("$NetBSD: compat_ns_ntoa.c,v 1.1 2006/08/26 16:07:01 matt Exp $");
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#endif
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#endif /* LIBC_SCCS and not lint */
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#include <sys/param.h>
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#include <compat/include/ns.h>
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#include <assert.h>
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#include <stdio.h>
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static char *spectHex __P((char *));
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char *
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ns_ntoa(addr)
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struct ns_addr addr;
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{
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static char obuf[40];
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union { union ns_net net_e; u_int32_t long_e; } net;
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u_int16_t port = htons(addr.x_port);
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char *cp;
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char *cp2;
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u_int8_t *up = addr.x_host.c_host;
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u_int8_t *uplim = up + 6;
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net.net_e = addr.x_net;
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sprintf(obuf, "%x", ntohl(net.long_e));
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cp = spectHex(obuf);
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cp2 = cp + 1;
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while (up < uplim && *up==0)
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up++;
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if (up == uplim) {
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if (port) {
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sprintf(cp, ".0");
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cp += 2;
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}
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} else {
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sprintf(cp, ".%x", *up++);
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while (up < uplim) {
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while (*cp) cp++;
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sprintf(cp, "%02x", *up++);
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}
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cp = spectHex(cp2);
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}
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if (port) {
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sprintf(cp, ".%x", port);
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spectHex(cp + 1);
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}
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return (obuf);
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}
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static char *
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spectHex(p0)
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char *p0;
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{
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int ok = 0;
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int nonzero = 0;
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char *p = p0;
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_DIAGASSERT(p0 != NULL);
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for (; *p; p++)
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switch (*p) {
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case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
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*p += ('A' - 'a');
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/* FALLTHROUGH */
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case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
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ok = 1;
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/* FALLTHROUGH */
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case '1': case '2': case '3': case '4': case '5':
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case '6': case '7': case '8': case '9':
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nonzero = 1;
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}
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if (nonzero && !ok) { *p++ = 'H'; *p = 0; }
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return (p);
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}
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