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161 lines
3.3 KiB
161 lines
3.3 KiB
/* |
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* ZeroTier One - Global Peer to Peer Ethernet |
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* Copyright (C) 2012-2013 ZeroTier Networks LLC |
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* |
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* This program is free software: you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation, either version 3 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program. If not, see <http://www.gnu.org/licenses/>. |
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* |
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* -- |
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* |
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* ZeroTier may be used and distributed under the terms of the GPLv3, which |
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* are available at: http://www.gnu.org/licenses/gpl-3.0.html |
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* |
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* If you would like to embed ZeroTier into a commercial application or |
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* redistribute it in a modified binary form, please contact ZeroTier Networks |
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* LLC. Start here: http://www.zerotier.com/ |
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*/ |
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#ifndef _ZT_MAC_HPP |
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#define _ZT_MAC_HPP |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include "Constants.hpp" |
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#include "Array.hpp" |
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#include "Utils.hpp" |
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namespace ZeroTier { |
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/** |
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* An Ethernet MAC address |
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*/ |
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class MAC : public Array<unsigned char,6> |
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{ |
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public: |
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/** |
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* Create a zero/null MAC |
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*/ |
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MAC() |
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throw() |
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{ |
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for(unsigned int i=0;i<6;++i) |
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data[i] = 0; |
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} |
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/** |
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* Create a MAC consisting of only this octet |
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* |
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* @param octet Octet to fill MAC with (e.g. 0xff for broadcast-all) |
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*/ |
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MAC(const unsigned char octet) |
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throw() |
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{ |
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for(unsigned int i=0;i<6;++i) |
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data[i] = octet; |
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} |
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/** |
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* Create a MAC from raw bits |
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* |
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* @param bits 6 bytes of MAC address data |
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*/ |
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MAC(const void *bits) |
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throw() |
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{ |
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for(unsigned int i=0;i<6;++i) |
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data[i] = ((const unsigned char *)bits)[i]; |
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} |
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/** |
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* @return True if non-NULL (not all zero) |
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*/ |
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inline operator bool() const |
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throw() |
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{ |
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for(unsigned int i=0;i<6;++i) { |
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if (data[i]) |
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return true; |
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} |
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return false; |
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} |
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/** |
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* @return True if this is the broadcast-all MAC (0xff:0xff:...) |
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*/ |
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inline bool isBroadcast() const |
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throw() |
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{ |
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for(unsigned int i=0;i<6;++i) { |
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if (data[i] != 0xff) |
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return false; |
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} |
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return true; |
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} |
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/** |
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* @return True if this is a multicast/broadcast address |
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*/ |
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inline bool isMulticast() const |
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throw() |
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{ |
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return ((data[0] & 1)); |
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} |
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/** |
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* @return True if this is a ZeroTier unicast MAC |
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*/ |
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inline bool isZeroTier() const |
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throw() |
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{ |
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return (data[0] == ZT_MAC_FIRST_OCTET); |
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} |
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/** |
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* Zero this MAC |
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*/ |
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inline void zero() |
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throw() |
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{ |
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for(unsigned int i=0;i<6;++i) |
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data[i] = 0; |
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} |
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/** |
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* @param s String hex representation (with or without :'s) |
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* @return True if string decoded into a full-length MAC |
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*/ |
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inline bool fromString(const char *s) |
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{ |
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std::string b(Utils::unhex(s)); |
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if (b.length() == 6) { |
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for(unsigned int i=0;i<6;++i) |
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data[i] = (unsigned char)b[i]; |
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return true; |
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} |
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for(unsigned int i=0;i<6;++i) |
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data[i] = 0; |
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return false; |
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} |
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inline std::string toString() const |
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{ |
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char tmp[32]; |
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Utils::snprintf(tmp,sizeof(tmp),"%.2x:%.2x:%.2x:%.2x:%.2x:%.2x",(int)data[0],(int)data[1],(int)data[2],(int)data[3],(int)data[4],(int)data[5]); |
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return std::string(tmp); |
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} |
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}; |
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} // namespace ZeroTier |
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#endif
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