text: /*
   * 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/exceptions.hpp>
  #include <graphene/chain/pts_address.hpp>
  
  #include <fc/crypto/base58.hpp>
  #include <fc/crypto/elliptic.hpp>
  #include <fc/crypto/ripemd160.hpp>
  #include <algorithm>
  
  namespace graphene { namespace chain {
  
     pts_address::pts_address()
     {
        memset( addr.data, 0, sizeof(addr.data) );
     }
  
     pts_address::pts_address( const std::string& base58str )
     {
        std::vector<char> v = fc::from_base58( fc::string(base58str) );
        if( v.size() )
           memcpy( addr.data, v.data(), std::min<size_t>( v.size(), sizeof(addr) ) );
  
        if( !is_valid() )
        {
           FC_THROW_EXCEPTION( invalid_pts_address, "invalid pts_address ${a}", ("a", base58str) );
        }
     }
  
     pts_address::pts_address( const fc::ecc::public_key& pub, bool compressed, uint8_t version )
     {
         fc::sha256 sha2;
         if( compressed )
         {
             auto dat = pub.serialize();
             sha2     = fc::sha256::hash(dat.data, sizeof(dat) );
         }
         else
         {
             auto dat = pub.serialize_ecc_point();
             sha2     = fc::sha256::hash(dat.data, sizeof(dat) );
         }
         auto rep      = fc::ripemd160::hash((char*)&sha2,sizeof(sha2));
         addr.data[0]  = version;
         memcpy( addr.data+1, (char*)&rep, sizeof(rep) );
         auto check    = fc::sha256::hash( addr.data, sizeof(rep)+1 );
         check = fc::sha256::hash(check);
         memcpy( addr.data+1+sizeof(rep), (char*)&check, 4 );
     }
  
     /**
      *  Checks the address to verify it has a
      *  valid checksum
      */
     bool pts_address::is_valid()const
     {
         auto check    = fc::sha256::hash( addr.data, sizeof(fc::ripemd160)+1 );
         check = fc::sha256::hash(check);
         return memcmp( addr.data+1+sizeof(fc::ripemd160), (char*)&check, 4 ) == 0;
     }
  
     pts_address::operator std::string()const
     {
          return fc::to_base58( addr.data, sizeof(addr) );
     }
  
  } } // namespace graphene
  
  namespace fc
  {
     void to_variant( const graphene::chain::pts_address& var,  variant& vo )
     {
          vo = std::string(var);
     }
     void from_variant( const variant& var,  graphene::chain::pts_address& vo )
     {
          vo = graphene::chain::pts_address( var.as_string() );
     }
  }
  