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File: [cvs.NetBSD.org] / src / lib / libc / compat / net / compat_ns_ntoa.c (download)

Revision 1.2, Tue Mar 20 17:05:59 2012 UTC (8 years, 4 months ago) by matt
Branch: MAIN
CVS Tags: yamt-pagecache-base9, yamt-pagecache-base8, yamt-pagecache-base7, yamt-pagecache-base6, yamt-pagecache-base5, yamt-pagecache-base4, tls-maxphys-base, tls-maxphys, tls-earlyentropy-base, tls-earlyentropy, riastradh-xf86-video-intel-2-7-1-pre-2-21-15, riastradh-drm2-base3, riastradh-drm2-base2, riastradh-drm2-base1, riastradh-drm2-base, riastradh-drm2, prg-localcount2-base3, prg-localcount2-base2, prg-localcount2-base1, prg-localcount2-base, prg-localcount2, phil-wifi-base, phil-wifi-20200421, phil-wifi-20200411, phil-wifi-20200406, phil-wifi-20191119, phil-wifi-20190609, phil-wifi, pgoyette-localcount-base, pgoyette-localcount-20170426, pgoyette-localcount-20170320, pgoyette-localcount-20170107, pgoyette-localcount-20161104, pgoyette-localcount-20160806, pgoyette-localcount-20160726, pgoyette-localcount, pgoyette-compat-merge-20190127, pgoyette-compat-base, pgoyette-compat-20190127, pgoyette-compat-20190118, pgoyette-compat-1226, pgoyette-compat-1126, pgoyette-compat-1020, pgoyette-compat-0930, pgoyette-compat-0906, pgoyette-compat-0728, pgoyette-compat-0625, pgoyette-compat-0521, pgoyette-compat-0502, pgoyette-compat-0422, pgoyette-compat-0415, pgoyette-compat-0407, pgoyette-compat-0330, pgoyette-compat-0322, pgoyette-compat-0315, pgoyette-compat, perseant-stdc-iso10646-base, perseant-stdc-iso10646, netbsd-9-base, netbsd-9-0-RELEASE, netbsd-9-0-RC2, netbsd-9-0-RC1, netbsd-9, netbsd-8-base, netbsd-8-2-RELEASE, netbsd-8-1-RELEASE, netbsd-8-1-RC1, netbsd-8-0-RELEASE, netbsd-8-0-RC2, netbsd-8-0-RC1, netbsd-8, netbsd-7-nhusb-base-20170116, netbsd-7-nhusb-base, netbsd-7-nhusb, netbsd-7-base, netbsd-7-2-RELEASE, netbsd-7-1-RELEASE, netbsd-7-1-RC2, netbsd-7-1-RC1, netbsd-7-1-2-RELEASE, netbsd-7-1-1-RELEASE, netbsd-7-1, netbsd-7-0-RELEASE, netbsd-7-0-RC3, netbsd-7-0-RC2, netbsd-7-0-RC1, netbsd-7-0-2-RELEASE, netbsd-7-0-1-RELEASE, netbsd-7-0, netbsd-7, matt-nb8-mediatek-base, matt-nb8-mediatek, localcount-20160914, is-mlppp-base, is-mlppp, bouyer-socketcan-base1, bouyer-socketcan-base, bouyer-socketcan, agc-symver-base, agc-symver, HEAD
Changes since 1.1: +9 -11 lines

Switch to C89 definitions.
Remove use of __P

/*	$NetBSD: compat_ns_ntoa.c,v 1.2 2012/03/20 17:05:59 matt Exp $	*/

/*
 * 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. 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.
 */

#include <sys/cdefs.h>
#if defined(LIBC_SCCS) && !defined(lint)
#if 0
static char sccsid[] = "@(#)ns_ntoa.c	8.1 (Berkeley) 6/4/93";
#else
__RCSID("$NetBSD: compat_ns_ntoa.c,v 1.2 2012/03/20 17:05:59 matt Exp $");
#endif
#endif /* LIBC_SCCS and not lint */

#include <sys/param.h>
#include <compat/include/ns.h>

#include <assert.h>
#include <stdio.h>

static char *spectHex(char *);

char *
ns_ntoa(struct ns_addr addr)
{
	static char obuf[40];
	union { union ns_net net_e; uint32_t long_e; } net;
	uint16_t port = htons(addr.x_port);
	char *cp;
	char *cp2;
	uint8_t *up = addr.x_host.c_host;
	uint8_t *uplim = up + 6;

	net.net_e = addr.x_net;
	sprintf(obuf, "%x", ntohl(net.long_e));
	cp = spectHex(obuf);
	cp2 = cp + 1;
	while (up < uplim && *up==0)
		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(char *p0)
{
	int ok = 0;
	int nonzero = 0;
	char *p = p0;

	_DIAGASSERT(p0 != NULL);

	for (; *p; p++)
		switch (*p) {
		case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
			*p += ('A' - 'a');
			/* FALLTHROUGH */
		case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
			ok = 1;
			/* FALLTHROUGH */
		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);
}