/* Copyright (C) 1996, 1997, 1998 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. The GNU C Library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with the GNU C Library; see the file COPYING.LIB. If not, see <http://www.gnu.org/licenses/>. */ /* * 2002-12-24 Nick Fedchik <nick@fedchik.org.ua> * - initial uClibc port */ #include <ctype.h> #include <stdio.h> #include <stdlib.h> #include <netinet/ether.h> #include <netinet/if_ether.h> struct ether_addr *ether_aton_r(const char *asc, struct ether_addr *addr) { /* asc is "X:XX:XX:x:xx:xX" */ int cnt; for (cnt = 0; cnt < 6; ++cnt) { unsigned char number; char ch = *asc++; if (ch < 0x20) return NULL; /* | 0x20 is cheap tolower(), valid for letters/numbers only */ ch |= 0x20; if ((ch < '0' || ch > '9') && (ch < 'a' || ch > 'f')) return NULL; number = !(ch > '9') ? (ch - '0') : (ch - 'a' + 10); ch = *asc++; if ((cnt != 5 && ch != ':') /* not last group */ /* What standard says ASCII ether address representation * may also finish with whitespace, not only NUL? * We can get rid of isspace() otherwise */ || (cnt == 5 && ch != '\0' /*&& !isspace(ch)*/) ) { ch |= 0x20; /* cheap tolower() */ if ((ch < '0' || ch > '9') && (ch < 'a' || ch > 'f')) return NULL; number = (number << 4) + (!(ch > '9') ? (ch - '0') : (ch - 'a' + 10)); if (cnt != 5) { ch = *asc++; if (ch != ':') return NULL; } } /* Store result. */ addr->ether_addr_octet[cnt] = number; } /* Looks like we allow garbage after last group? * "1:2:3:4:5:66anything_at_all"? */ return addr; } libc_hidden_def(ether_aton_r) struct ether_addr *ether_aton(const char *asc) { static struct ether_addr result; return ether_aton_r(asc, &result); } char *ether_ntoa_r(const struct ether_addr *addr, char *buf) { sprintf(buf, "%x:%x:%x:%x:%x:%x", addr->ether_addr_octet[0], addr->ether_addr_octet[1], addr->ether_addr_octet[2], addr->ether_addr_octet[3], addr->ether_addr_octet[4], addr->ether_addr_octet[5]); return buf; } libc_hidden_def(ether_ntoa_r) char *ether_ntoa(const struct ether_addr *addr) { static char asc[18]; return ether_ntoa_r(addr, asc); }