peerplays_migrated/libraries/chain/protocol/address.cpp
2016-01-07 11:44:52 -05:00

109 lines
3.8 KiB
C++

/*
* Copyright (c) 2015 Cryptonomex, Inc., and contributors.
*
* The MIT License
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include <graphene/chain/protocol/types.hpp>
#include <graphene/chain/protocol/address.hpp>
#include <fc/crypto/elliptic.hpp>
#include <fc/crypto/base58.hpp>
#include <algorithm>
namespace graphene {
namespace chain {
address::address(){}
address::address( const std::string& base58str )
{
std::string prefix( GRAPHENE_ADDRESS_PREFIX );
FC_ASSERT( is_valid( base58str, prefix ), "${str}", ("str",base58str) );
std::vector<char> v = fc::from_base58( base58str.substr( prefix.size() ) );
memcpy( (char*)addr._hash, v.data(), std::min<size_t>( v.size()-4, sizeof( addr ) ) );
}
bool address::is_valid( const std::string& base58str, const std::string& prefix )
{
const size_t prefix_len = prefix.size();
if( base58str.size() <= prefix_len )
return false;
if( base58str.substr( 0, prefix_len ) != prefix )
return false;
std::vector<char> v;
try
{
v = fc::from_base58( base58str.substr( prefix_len ) );
}
catch( const fc::parse_error_exception& e )
{
return false;
}
if( v.size() != sizeof( fc::ripemd160 ) + 4 )
return false;
const fc::ripemd160 checksum = fc::ripemd160::hash( v.data(), v.size() - 4 );
if( memcmp( v.data() + 20, (char*)checksum._hash, 4 ) != 0 )
return false;
return true;
}
address::address( const fc::ecc::public_key& pub )
{
auto dat = pub.serialize();
addr = fc::ripemd160::hash( fc::sha512::hash( dat.data, sizeof( dat ) ) );
}
address::address( const pts_address& ptsaddr )
{
addr = fc::ripemd160::hash( (char*)&ptsaddr, sizeof( ptsaddr ) );
}
address::address( const fc::ecc::public_key_data& pub )
{
addr = fc::ripemd160::hash( fc::sha512::hash( pub.data, sizeof( pub ) ) );
}
address::address( const graphene::chain::public_key_type& pub )
{
addr = fc::ripemd160::hash( fc::sha512::hash( pub.key_data.data, sizeof( pub.key_data ) ) );
}
address::operator std::string()const
{
fc::array<char,24> bin_addr;
memcpy( (char*)&bin_addr, (char*)&addr, sizeof( addr ) );
auto checksum = fc::ripemd160::hash( (char*)&addr, sizeof( addr ) );
memcpy( ((char*)&bin_addr)+20, (char*)&checksum._hash[0], 4 );
return GRAPHENE_ADDRESS_PREFIX + fc::to_base58( bin_addr.data, sizeof( bin_addr ) );
}
} } // namespace graphene::chain
namespace fc
{
void to_variant( const graphene::chain::address& var, variant& vo )
{
vo = std::string(var);
}
void from_variant( const variant& var, graphene::chain::address& vo )
{
vo = graphene::chain::address( var.as_string() );
}
}