Contract Source Code (Solidity)

IDE

• Blockscan IDE
• 🤖 Code ReaderBeta
• Remix IDE

Outline

•  contract AssetInterface *
•    - function _performTransferWithReferenc ...
•    - function _performTransferToICAPWithRe ...
•    - function _performApprove(address _spe ...
•    - function _performTransferFromWithRefe ...
•    - function _performTransferFromToICAPWi ...
•    - function _performGeneric(bytes, addre ...
•  contract AssetProxy *
•    - function _forwardApprove(address _spe ...
•    - function _forwardTransferFromWithRefe ...
•    - function _forwardTransferFromToICAPWi ...
•    - function balanceOf(address _owner)
•  contract Asset is AssetInterface *
•    - function init(AssetProxy _proxy)
•    - function _performTransferWithReferenc ...
•    - function _transferWithReference(addre ...
•    - function _performTransferToICAPWithRe ...
•    - function _transferToICAPWithReference ...
•    - function _performTransferFromWithRefe ...
•    - function _transferFromWithReference(a ...
•    - function _performTransferFromToICAPWi ...
•    - function _transferFromToICAPWithRefer ...
•    - function _performApprove(address _spe ...
•    - function _approve(address _spender, u ...
•    - function _performGeneric(bytes _data, ...
•    - function _generic(bytes _data, addres ...
•    - function _callReturn(address _target, ...
•    - function _sender()

More Options

• Similar
• Sol2Uml
• Submit Audit
• Compare

/**
 *Submitted for verification at Etherscan.io on 2019-04-03
*/

pragma solidity 0.4.11;

contract AssetInterface {
    function _performTransferWithReference(address _to, uint _value, string _reference, address _sender) returns(bool);
    function _performTransferToICAPWithReference(bytes32 _icap, uint _value, string _reference, address _sender) returns(bool);
    function _performApprove(address _spender, uint _value, address _sender) returns(bool);    
    function _performTransferFromWithReference(address _from, address _to, uint _value, string _reference, address _sender) returns(bool);
    function _performTransferFromToICAPWithReference(address _from, bytes32 _icap, uint _value, string _reference, address _sender) returns(bool);
    function _performGeneric(bytes, address) payable returns(bytes32){
        revert();
    }
}

contract AssetProxy {
    function _forwardApprove(address _spender, uint _value, address _sender) returns(bool);
    function _forwardTransferFromWithReference(address _from, address _to, uint _value, string _reference, address _sender) returns(bool);
    function _forwardTransferFromToICAPWithReference(address _from, bytes32 _icap, uint _value, string _reference, address _sender) returns(bool);
    function balanceOf(address _owner) constant returns(uint);
}

/**
 * @title EToken2 Asset implementation contract.
 *
 * Basic asset implementation contract, without any additional logic.
 * Every other asset implementation contracts should derive from this one.
 * Receives calls from the proxy, and calls back immediatly without arguments modification.
 *
 * Note: all the non constant functions return false instead of throwing in case if state change
 * didn't happen yet.
 */
contract Asset is AssetInterface {
    // Assigned asset proxy contract, immutable.
    AssetProxy public proxy;

    /**
     * Only assigned proxy is allowed to call.
     */
    modifier onlyProxy() {
        if (proxy == msg.sender) {
            _;
        }
    }

    /**
     * Sets asset proxy address.
     *
     * Can be set only once.
     *
     * @param _proxy asset proxy contract address.
     *
     * @return success.
     * @dev function is final, and must not be overridden.
     */
    function init(AssetProxy _proxy) returns(bool) {
        if (address(proxy) != 0x0) {
            return false;
        }
        proxy = _proxy;
        return true;
    }

    /**
     * Passes execution into virtual function.
     *
     * Can only be called by assigned asset proxy.
     *
     * @return success.
     * @dev function is final, and must not be overridden.
     */
    function _performTransferWithReference(address _to, uint _value, string _reference, address _sender) onlyProxy() returns(bool) {
        return _transferWithReference(_to, _value, _reference, _sender);
    }

    /**
     * Calls back without modifications.
     *
     * @return success.
     * @dev function is virtual, and meant to be overridden.
     */
    function _transferWithReference(address _to, uint _value, string _reference, address _sender) internal returns(bool) {
        return proxy._forwardTransferFromWithReference(_sender, _to, _value, _reference, _sender);
    }

    /**
     * Passes execution into virtual function.
     *
     * Can only be called by assigned asset proxy.
     *
     * @return success.
     * @dev function is final, and must not be overridden.
     */
    function _performTransferToICAPWithReference(bytes32 _icap, uint _value, string _reference, address _sender) onlyProxy() returns(bool) {
        return _transferToICAPWithReference(_icap, _value, _reference, _sender);
    }

    /**
     * Calls back without modifications.
     *
     * @return success.
     * @dev function is virtual, and meant to be overridden.
     */
    function _transferToICAPWithReference(bytes32 _icap, uint _value, string _reference, address _sender) internal returns(bool) {
        return proxy._forwardTransferFromToICAPWithReference(_sender, _icap, _value, _reference, _sender);
    }

    /**
     * Passes execution into virtual function.
     *
     * Can only be called by assigned asset proxy.
     *
     * @return success.
     * @dev function is final, and must not be overridden.
     */
    function _performTransferFromWithReference(address _from, address _to, uint _value, string _reference, address _sender) onlyProxy() returns(bool) {
        return _transferFromWithReference(_from, _to, _value, _reference, _sender);
    }

    /**
     * Calls back without modifications.
     *
     * @return success.
     * @dev function is virtual, and meant to be overridden.
     */
    function _transferFromWithReference(address _from, address _to, uint _value, string _reference, address _sender) internal returns(bool) {
        return proxy._forwardTransferFromWithReference(_from, _to, _value, _reference, _sender);
    }

    /**
     * Passes execution into virtual function.
     *
     * Can only be called by assigned asset proxy.
     *
     * @return success.
     * @dev function is final, and must not be overridden.
     */
    function _performTransferFromToICAPWithReference(address _from, bytes32 _icap, uint _value, string _reference, address _sender) onlyProxy() returns(bool) {
        return _transferFromToICAPWithReference(_from, _icap, _value, _reference, _sender);
    }

    /**
     * Calls back without modifications.
     *
     * @return success.
     * @dev function is virtual, and meant to be overridden.
     */
    function _transferFromToICAPWithReference(address _from, bytes32 _icap, uint _value, string _reference, address _sender) internal returns(bool) {
        return proxy._forwardTransferFromToICAPWithReference(_from, _icap, _value, _reference, _sender);
    }

    /**
     * Passes execution into virtual function.
     *
     * Can only be called by assigned asset proxy.
     *
     * @return success.
     * @dev function is final, and must not be overridden.
     */
    function _performApprove(address _spender, uint _value, address _sender) onlyProxy() returns(bool) {
        return _approve(_spender, _value, _sender);
    }

    /**
     * Calls back without modifications.
     *
     * @return success.
     * @dev function is virtual, and meant to be overridden.
     */
    function _approve(address _spender, uint _value, address _sender) internal returns(bool) {
        return proxy._forwardApprove(_spender, _value, _sender);
    }

    /**
     * Passes execution into virtual function.
     *
     * Can only be called by assigned asset proxy.
     *
     * @return bytes32 result.
     * @dev function is final, and must not be overridden.
     */
    function _performGeneric(bytes _data, address _sender) payable onlyProxy() returns(bytes32) {
        return _generic(_data, _sender);
    }

    modifier onlyMe() {
        if (this == msg.sender) {
            _;
        }
    }

    // Most probably the following should never be redefined in child contracts.
    address genericSender;
    function _generic(bytes _data, address _sender) internal returns(bytes32) {
        // Restrict reentrancy.
        if (genericSender != 0x0) {
            throw;
        }
        genericSender = _sender;
        bytes32 result = _callReturn(this, _data, msg.value);
        delete genericSender;
        return result;
    }

    function _callReturn(address _target, bytes _data, uint _value) internal returns(bytes32 result) {
        bool success;
        assembly {
            success := call(div(mul(gas, 63), 64), _target, _value, add(_data, 32), mload(_data), 0, 32)
            result := mload(0)
        }
        if (!success) {
            throw;
        }
    }

    // Decsendants should use _sender() instead of msg.sender to properly process proxied calls.
    function _sender() constant internal returns(address) {
        return this == msg.sender ? genericSender : msg.sender;
    }
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"constant":false,"inputs":[{"name":"_to","type":"address"},{"name":"_value","type":"uint256"},{"name":"_reference","type":"string"},{"name":"_sender","type":"address"}],"name":"_performTransferWithReference","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_proxy","type":"address"}],"name":"init","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_icap","type":"bytes32"},{"name":"_value","type":"uint256"},{"name":"_reference","type":"string"},{"name":"_sender","type":"address"}],"name":"_performTransferToICAPWithReference","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_from","type":"address"},{"name":"_to","type":"address"},{"name":"_value","type":"uint256"},{"name":"_reference","type":"string"},{"name":"_sender","type":"address"}],"name":"_performTransferFromWithReference","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_data","type":"bytes"},{"name":"_sender","type":"address"}],"name":"_performGeneric","outputs":[{"name":"","type":"bytes32"}],"payable":true,"type":"function"},{"constant":false,"inputs":[{"name":"_spender","type":"address"},{"name":"_value","type":"uint256"},{"name":"_sender","type":"address"}],"name":"_performApprove","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_from","type":"address"},{"name":"_icap","type":"bytes32"},{"name":"_value","type":"uint256"},{"name":"_reference","type":"string"},{"name":"_sender","type":"address"}],"name":"_performTransferFromToICAPWithReference","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"proxy","outputs":[{"name":"","type":"address"}],"payable":false,"type":"function"}]

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

bzzr://cef8206b00df09a08833a3eb8ea1f38564301d640ffadc97580a3179f0d69e91