pragma solidity ^0.4.19;
contract Storage {
address public frontend_contract;
address public owner;
mapping(address => uint) public balances;
uint256 public total_Supply;
string public name;
string public symbol;
uint8 public decimals;
function Storage()
{
owner = msg.sender;
}
function Load(address _frontend_contract) only_owner
{
frontend_contract = _frontend_contract;
}
function name() constant returns (string) { return name; }
function symbol() constant returns (string) { return symbol; }
function decimals() constant returns (uint8) {return decimals;}
function totalSupply() constant returns (uint256 _supply)
{
return total_Supply;
}
function balanceOf(address _owner) constant returns (uint _balance)
{
return balances[_owner];
}
function set_balance(address _owner, uint256 _amount) only_frontend
{
balances[_owner] = _amount;
}
function set_supply(uint256 _amount) only_owner
{
totalSupply = _amount;
}
/** DEBUGGING FUNCTIONS **/
modifier only_frontend
{
if(msg.sender != frontend_contract)
{
throw;
}
_;
}
modifier only_owner
{
assert(msg.sender == owner);
_;
}
}
/**
* @title Basic token
* @dev Basic version of StandardToken
*/
contract Logic {
address public owner;
address public lib;
function Load(address _lib) only_owner
{
lib = _lib;
}
function Logic()
{
owner = msg.sender;
}
function() payable
{
lib.delegatecall(msg.data);
}
modifier only_owner
{
assert(msg.sender == owner);
_;
}
}
contract ERC223ReceivingContract
{
function tokenFallback(address, uint256, bytes) {}
}
contract Lib {
event Transfer(address indexed from, address indexed to, uint indexed value, bytes data);
function transfer(address _to, uint _value, bytes _data)
{
/* Only hardcoded addresses could be `delegatecall`ed */
address _storage = 0x873ad067fa8073c57e4a566583437e971a69a731;
uint codeLength;
assembly {
codeLength := extcodesize(_to)
}
if(!_storage.call(bytes4(sha3("decrease_balance(address,uint256)")), msg.sender, _value))
{
throw;
}
if(!_storage.call(bytes4(sha3("increase_balance(address,uint256)")), _to, _value))
{
throw;
}
if(codeLength>0) {
ERC223ReceivingContract receiver = ERC223ReceivingContract(_to);
receiver.tokenFallback(msg.sender, _value, _data);
}
Transfer(msg.sender, _to, _value, _data);
}
function transfer(address _to, uint _value)
{
address _storage = 0x873ad067fa8073c57e4a566583437e971a69a731;
uint codeLength;
bytes memory _empty;
assembly {
codeLength := extcodesize(_to)
}
if(!_storage.call(bytes4(sha3("decrease_balance(address,uint256)")), msg.sender, _value))
{
throw;
}
if(!_storage.call(bytes4(sha3("increase_balance(address,uint256)")), _to, _value))
{
throw;
}
if(codeLength>0) {
ERC223ReceivingContract receiver = ERC223ReceivingContract(_to);
receiver.tokenFallback(msg.sender, _value, _empty);
}
Transfer(msg.sender, _to, _value, _empty);
}
}
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