* Updating common/lib * Updating lib/csu * Updating lib/libc * Updating libexec/ld.elf_so * Corrected test on __minix in featuretest to actually follow the meaning of the comment. * Cleaned up _REENTRANT-related defintions. * Disabled -D_REENTRANT for libfetch * Removing some unneeded __NBSD_LIBC defines and tests Change-Id: Ic1394baef74d11b9f86b312f5ff4bbc3cbf72ce2
171 lines
4.6 KiB
C
171 lines
4.6 KiB
C
/* $NetBSD: linkaddr.c,v 1.16 2012/03/20 17:44:18 matt Exp $ */
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/*-
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* Copyright (c) 1990, 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[] = "@(#)linkaddr.c 8.1 (Berkeley) 6/4/93";
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#else
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__RCSID("$NetBSD: linkaddr.c,v 1.16 2012/03/20 17:44:18 matt Exp $");
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#endif
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#endif /* LIBC_SCCS and not lint */
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <net/if_dl.h>
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#include <assert.h>
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#include <string.h>
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/* States*/
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#define NAMING 0
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#define GOTONE 1
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#define GOTTWO 2
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#define RESET 3
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/* Inputs */
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#define DIGIT (4*0)
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#define END (4*1)
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#define DELIM (4*2)
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#define LETTER (4*3)
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void
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link_addr(const char *addr, struct sockaddr_dl *sdl)
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{
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register char *cp = sdl->sdl_data;
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char *cplim = sdl->sdl_len + (char *)(void *)sdl;
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int byte = 0, state = NAMING;
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size_t newaddr = 0; /* pacify gcc */
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_DIAGASSERT(addr != NULL);
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_DIAGASSERT(sdl != NULL);
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(void)memset(&sdl->sdl_family, 0, (size_t)sdl->sdl_len - 1);
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sdl->sdl_family = AF_LINK;
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do {
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state &= ~LETTER;
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if ((*addr >= '0') && (*addr <= '9')) {
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newaddr = *addr - '0';
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} else if ((*addr >= 'a') && (*addr <= 'f')) {
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newaddr = *addr - 'a' + 10;
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} else if ((*addr >= 'A') && (*addr <= 'F')) {
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newaddr = *addr - 'A' + 10;
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} else if (*addr == 0) {
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state |= END;
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} else if (state == NAMING &&
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(((*addr >= 'A') && (*addr <= 'Z')) ||
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((*addr >= 'a') && (*addr <= 'z'))))
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state |= LETTER;
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else
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state |= DELIM;
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addr++;
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switch (state /* | INPUT */) {
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case NAMING | DIGIT:
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case NAMING | LETTER:
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*cp++ = addr[-1];
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continue;
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case NAMING | DELIM:
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state = RESET;
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_DIAGASSERT(__type_fit(uint8_t, cp - sdl->sdl_data));
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sdl->sdl_nlen = (uint8_t)(cp - sdl->sdl_data);
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continue;
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case GOTTWO | DIGIT:
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*cp++ = byte;
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/* FALLTHROUGH */
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case RESET | DIGIT:
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state = GOTONE;
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byte = (int)newaddr;
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continue;
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case GOTONE | DIGIT:
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state = GOTTWO;
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byte = (int)newaddr + (byte << 4);
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continue;
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default: /* | DELIM */
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state = RESET;
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*cp++ = byte;
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byte = 0;
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continue;
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case GOTONE | END:
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case GOTTWO | END:
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*cp++ = byte;
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/* FALLTHROUGH */
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case RESET | END:
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break;
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}
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break;
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} while (cp < cplim);
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_DIAGASSERT(__type_fit(uint8_t, cp - LLADDR(sdl)));
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sdl->sdl_alen = (uint8_t)(cp - LLADDR(sdl));
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newaddr = cp - (char *)(void *)sdl;
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if (newaddr > sizeof(*sdl)) {
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_DIAGASSERT(__type_fit(uint8_t, newaddr));
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sdl->sdl_len = (uint8_t)newaddr;
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}
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return;
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}
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static const char hexlist[16] = "0123456789abcdef";
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char *
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link_ntoa(const struct sockaddr_dl *sdl)
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{
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static char obuf[64];
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register char *out = obuf;
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register size_t i;
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const u_char *in = (const u_char *)CLLADDR(sdl);
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const u_char *inlim = in + sdl->sdl_alen;
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int firsttime = 1;
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_DIAGASSERT(sdl != NULL);
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if (sdl->sdl_nlen) {
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(void)memcpy(obuf, sdl->sdl_data, (size_t)sdl->sdl_nlen);
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out += sdl->sdl_nlen;
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if (sdl->sdl_alen)
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*out++ = ':';
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}
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while (in < inlim) {
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if (firsttime)
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firsttime = 0;
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else
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*out++ = '.';
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i = *in++;
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if (i > 0xf) {
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out[1] = hexlist[i & 0xf];
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i >>= 4;
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out[0] = hexlist[i];
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out += 2;
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} else
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*out++ = hexlist[i];
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}
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*out = 0;
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return (obuf);
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}
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