62 lines
2.4 KiB
C++
62 lines
2.4 KiB
C++
/*
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* Copyright (C) 2010 The Android Open Source Project
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* 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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* * 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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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* 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 <netinet/ether.h>
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#include <stdio.h>
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ether_addr* ether_aton_r(const char* asc, ether_addr* addr) {
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int bytes[ETHER_ADDR_LEN], end;
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int n = sscanf(asc, "%x:%x:%x:%x:%x:%x%n",
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&bytes[0], &bytes[1], &bytes[2],
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&bytes[3], &bytes[4], &bytes[5], &end);
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if (n != ETHER_ADDR_LEN || asc[end] != '\0') return NULL;
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for (int i = 0; i < ETHER_ADDR_LEN; i++) {
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if (bytes[i] > 0xff) return NULL;
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addr->ether_addr_octet[i] = bytes[i];
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}
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return addr;
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}
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struct ether_addr* ether_aton(const char* asc) {
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static ether_addr addr;
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return ether_aton_r(asc, &addr);
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}
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char* ether_ntoa_r(const ether_addr* addr, char* buf) {
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snprintf(buf, 18, "%02x:%02x:%02x:%02x:%02x:%02x",
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addr->ether_addr_octet[0], addr->ether_addr_octet[1],
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addr->ether_addr_octet[2], addr->ether_addr_octet[3],
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addr->ether_addr_octet[4], addr->ether_addr_octet[5]);
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return buf;
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}
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char* ether_ntoa(const ether_addr* addr) {
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static char buf[18];
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return ether_ntoa_r(addr, buf);
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}
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