Token

Contract Source Code (Solidity)

IDE

• Blockscan IDE
• 🤖 Code ReaderBeta
• Remix IDE

Outline

 contract OwnedUpgradeabilityProxy *    - function proxyOwner()    - function pendingProxyOwner()    - function _setUpgradeabilityOwner(addr ...    - function _setPendingUpgradeabilityOwn ...    - function transferProxyOwnership(addre ...    - function claimProxyOwnership()    - function upgradeTo(address implementa ...    - function implementation()    - function proxyCall()

More Options

• Is this a proxy?
• Similar
• Sol2Uml
• Submit Audit
• Compare

/**
 *Submitted for verification at Etherscan.io on 2020-11-18
*/

/*                                                                           
    .'''''''''''..     ..''''''''''''''''..       ..'''''''''''''''..       
    .;;;;;;;;;;;'.   .';;;;;;;;;;;;;;;;;;,.     .,;;;;;;;;;;;;;;;;;,.       
    .;;;;;;;;;;,.   .,;;;;;;;;;;;;;;;;;;;,.    .,;;;;;;;;;;;;;;;;;;,.       
    .;;;;;;;;;,.   .,;;;;;;;;;;;;;;;;;;;;,.   .;;;;;;;;;;;;;;;;;;;;,.       
    ';;;;;;;;'.  .';;;;;;;;;;;;;;;;;;;;;;,. .';;;;;;;;;;;;;;;;;;;;;,.       
    ';;;;;,..   .';;;;;;;;;;;;;;;;;;;;;;;,..';;;;;;;;;;;;;;;;;;;;;;,.       
    ......     .';;;;;;;;;;;;;,'''''''''''.,;;;;;;;;;;;;;,'''''''''..       
              .,;;;;;;;;;;;;;.           .,;;;;;;;;;;;;;.                   
             .,;;;;;;;;;;;;,.           .,;;;;;;;;;;;;,.                    
            .,;;;;;;;;;;;;,.           .,;;;;;;;;;;;;,.                     
           .,;;;;;;;;;;;;,.           .;;;;;;;;;;;;;,.     .....            
          .;;;;;;;;;;;;;'.         ..';;;;;;;;;;;;;'.    .',;;;;,'.         
        .';;;;;;;;;;;;;'.         .';;;;;;;;;;;;;;'.   .';;;;;;;;;;.        
       .';;;;;;;;;;;;;'.         .';;;;;;;;;;;;;;'.    .;;;;;;;;;;;,.       
      .,;;;;;;;;;;;;;'...........,;;;;;;;;;;;;;;.      .;;;;;;;;;;;,.       
     .,;;;;;;;;;;;;,..,;;;;;;;;;;;;;;;;;;;;;;;,.       ..;;;;;;;;;,.        
    .,;;;;;;;;;;;;,. .,;;;;;;;;;;;;;;;;;;;;;;,.          .',;;;,,..         
   .,;;;;;;;;;;;;,.  .,;;;;;;;;;;;;;;;;;;;;;,.              ....            
    ..',;;;;;;;;,.   .,;;;;;;;;;;;;;;;;;;;;,.                               
       ..',;;;;'.    .,;;;;;;;;;;;;;;;;;;;'.                                
          ...'..     .';;;;;;;;;;;;;;,,,'.                                  
                       ...............                                      
*/

// https://github.com/trusttoken/smart-contracts
// SPDX-License-Identifier: MIT

// File: contracts/proxy/OwnedUpgradeabilityProxy.sol
pragma solidity 0.6.10;

/**
 * @title OwnedUpgradeabilityProxy
 * @dev This contract combines an upgradeability proxy with basic authorization control functionalities
 */
contract OwnedUpgradeabilityProxy {
    /**
     * @dev Event to show ownership has been transferred
     * @param previousOwner representing the address of the previous owner
     * @param newOwner representing the address of the new owner
     */
    event ProxyOwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    /**
     * @dev Event to show ownership transfer is pending
     * @param currentOwner representing the address of the current owner
     * @param pendingOwner representing the address of the pending owner
     */
    event NewPendingOwner(address currentOwner, address pendingOwner);

    // Storage position of the owner and pendingOwner of the contract
    bytes32 private constant proxyOwnerPosition = 0x6279e8199720cf3557ecd8b58d667c8edc486bd1cf3ad59ea9ebdfcae0d0dfac; //keccak256("trueUSD.proxy.owner");
    bytes32 private constant pendingProxyOwnerPosition = 0x8ddbac328deee8d986ec3a7b933a196f96986cb4ee030d86cc56431c728b83f4; //keccak256("trueUSD.pending.proxy.owner");

    /**
     * @dev the constructor sets the original owner of the contract to the sender account.
     */
    constructor() public {
        _setUpgradeabilityOwner(msg.sender);
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyProxyOwner() {
        require(msg.sender == proxyOwner(), "only Proxy Owner");
        _;
    }

    /**
     * @dev Throws if called by any account other than the pending owner.
     */
    modifier onlyPendingProxyOwner() {
        require(msg.sender == pendingProxyOwner(), "only pending Proxy Owner");
        _;
    }

    /**
     * @dev Tells the address of the owner
     * @return owner the address of the owner
     */
    function proxyOwner() public view returns (address owner) {
        bytes32 position = proxyOwnerPosition;
        assembly {
            owner := sload(position)
        }
    }

    /**
     * @dev Tells the address of the owner
     * @return pendingOwner the address of the pending owner
     */
    function pendingProxyOwner() public view returns (address pendingOwner) {
        bytes32 position = pendingProxyOwnerPosition;
        assembly {
            pendingOwner := sload(position)
        }
    }

    /**
     * @dev Sets the address of the owner
     */
    function _setUpgradeabilityOwner(address newProxyOwner) internal {
        bytes32 position = proxyOwnerPosition;
        assembly {
            sstore(position, newProxyOwner)
        }
    }

    /**
     * @dev Sets the address of the owner
     */
    function _setPendingUpgradeabilityOwner(address newPendingProxyOwner) internal {
        bytes32 position = pendingProxyOwnerPosition;
        assembly {
            sstore(position, newPendingProxyOwner)
        }
    }

    /**
     * @dev Allows the current owner to transfer control of the contract to a newOwner.
     *changes the pending owner to newOwner. But doesn't actually transfer
     * @param newOwner The address to transfer ownership to.
     */
    function transferProxyOwnership(address newOwner) external onlyProxyOwner {
        require(newOwner != address(0));
        _setPendingUpgradeabilityOwner(newOwner);
        emit NewPendingOwner(proxyOwner(), newOwner);
    }

    /**
     * @dev Allows the pendingOwner to claim ownership of the proxy
     */
    function claimProxyOwnership() external onlyPendingProxyOwner {
        emit ProxyOwnershipTransferred(proxyOwner(), pendingProxyOwner());
        _setUpgradeabilityOwner(pendingProxyOwner());
        _setPendingUpgradeabilityOwner(address(0));
    }

    /**
     * @dev Allows the proxy owner to upgrade the current version of the proxy.
     * @param implementation representing the address of the new implementation to be set.
     */
    function upgradeTo(address implementation) public virtual onlyProxyOwner {
        address currentImplementation;
        bytes32 position = implementationPosition;
        assembly {
            currentImplementation := sload(position)
        }
        require(currentImplementation != implementation);
        assembly {
            sstore(position, implementation)
        }
        emit Upgraded(implementation);
    }

    /**
     * @dev This event will be emitted every time the implementation gets upgraded
     * @param implementation representing the address of the upgraded implementation
     */
    event Upgraded(address indexed implementation);

    // Storage position of the address of the current implementation
    bytes32 private constant implementationPosition = 0x6e41e0fbe643dfdb6043698bf865aada82dc46b953f754a3468eaa272a362dc7; //keccak256("trueUSD.proxy.implementation");

    function implementation() public view returns (address impl) {
        bytes32 position = implementationPosition;
        assembly {
            impl := sload(position)
        }
    }

    /**
     * @dev Fallback functions allowing to perform a delegatecall to the given implementation.
     * This function will return whatever the implementation call returns
     */
    fallback() external payable {
        proxyCall();
    }

    receive() external payable {
        proxyCall();
    }

    function proxyCall() internal {
        bytes32 position = implementationPosition;

        assembly {
            let ptr := mload(0x40)
            calldatacopy(ptr, returndatasize(), calldatasize())
            let result := delegatecall(gas(), sload(position), ptr, calldatasize(), returndatasize(), returndatasize())
            returndatacopy(ptr, 0, returndatasize())

            switch result
                case 0 {
                    revert(ptr, returndatasize())
                }
                default {
                    return(ptr, returndatasize())
                }
        }
    }
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"currentOwner","type":"address"},{"indexed":false,"internalType":"address","name":"pendingOwner","type":"address"}],"name":"NewPendingOwner","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"ProxyOwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"implementation","type":"address"}],"name":"Upgraded","type":"event"},{"stateMutability":"payable","type":"fallback"},{"inputs":[],"name":"claimProxyOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"implementation","outputs":[{"internalType":"address","name":"impl","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"pendingProxyOwner","outputs":[{"internalType":"address","name":"pendingOwner","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"proxyOwner","outputs":[{"internalType":"address","name":"owner","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferProxyOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"implementation","type":"address"}],"name":"upgradeTo","outputs":[],"stateMutability":"nonpayable","type":"function"},{"stateMutability":"payable","type":"receive"}]

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

0x6080604052600436106100695760003560e01c80635c60da1b116100435780635c60da1b146101135780639965b3d614610128578063f1739cae1461013d57610078565b8063025313a2146100805780630add8140146100be5780633659cfe6146100d357610078565b366100785761007661017d565b005b61007661017d565b34801561008c57600080fd5b506100956101c2565b6040805173ffffffffffffffffffffffffffffffffffffffff9092168252519081900360200190f35b3480156100ca57600080fd5b506100956101e7565b3480156100df57600080fd5b50610076600480360360208110156100f657600080fd5b503573ffffffffffffffffffffffffffffffffffffffff1661020c565b34801561011f57600080fd5b50610095610340565b34801561013457600080fd5b50610076610365565b34801561014957600080fd5b506100766004803603602081101561016057600080fd5b503573ffffffffffffffffffffffffffffffffffffffff1661048a565b6040517f6e41e0fbe643dfdb6043698bf865aada82dc46b953f754a3468eaa272a362dc790363d82373d3d368385545af43d6000833e8080156101be573d83f35b3d83fd5b7f6279e8199720cf3557ecd8b58d667c8edc486bd1cf3ad59ea9ebdfcae0d0dfac5490565b7f8ddbac328deee8d986ec3a7b933a196f96986cb4ee030d86cc56431c728b83f45490565b6102146101c2565b73ffffffffffffffffffffffffffffffffffffffff163373ffffffffffffffffffffffffffffffffffffffff16146102ad57604080517f08c379a000000000000000000000000000000000000000000000000000000000815260206004820152601060248201527f6f6e6c792050726f7879204f776e657200000000000000000000000000000000604482015290519081900360640190fd5b7f6e41e0fbe643dfdb6043698bf865aada82dc46b953f754a3468eaa272a362dc780549073ffffffffffffffffffffffffffffffffffffffff80831690841614156102f757600080fd5b82815560405173ffffffffffffffffffffffffffffffffffffffff8416907fbc7cd75a20ee27fd9adebab32041f755214dbc6bffa90cc0225b39da2e5c2d3b90600090a2505050565b7f6e41e0fbe643dfdb6043698bf865aada82dc46b953f754a3468eaa272a362dc75490565b61036d6101e7565b73ffffffffffffffffffffffffffffffffffffffff163373ffffffffffffffffffffffffffffffffffffffff161461040657604080517f08c379a000000000000000000000000000000000000000000000000000000000815260206004820152601860248201527f6f6e6c792070656e64696e672050726f7879204f776e65720000000000000000604482015290519081900360640190fd5b61040e6101e7565b73ffffffffffffffffffffffffffffffffffffffff1661042c6101c2565b73ffffffffffffffffffffffffffffffffffffffff167f5a3e66efaa1e445ebd894728a69d6959842ea1e97bd79b892797106e270efcd960405160405180910390a361047e6104796101e7565b6105af565b61048860006105d3565b565b6104926101c2565b73ffffffffffffffffffffffffffffffffffffffff163373ffffffffffffffffffffffffffffffffffffffff161461052b57604080517f08c379a000000000000000000000000000000000000000000000000000000000815260206004820152601060248201527f6f6e6c792050726f7879204f776e657200000000000000000000000000000000604482015290519081900360640190fd5b73ffffffffffffffffffffffffffffffffffffffff811661054b57600080fd5b610554816105d3565b7fb3d55174552271a4f1aaf36b72f50381e892171636b3fb5447fe00e995e7a37b61057d6101c2565b6040805173ffffffffffffffffffffffffffffffffffffffff928316815291841660208301528051918290030190a150565b7f6279e8199720cf3557ecd8b58d667c8edc486bd1cf3ad59ea9ebdfcae0d0dfac55565b7f8ddbac328deee8d986ec3a7b933a196f96986cb4ee030d86cc56431c728b83f45556fea26469706673582212206acd099dfc34ccee396084df959d0fdd422a2c554ac50708d35a07f9a50e18bd64736f6c634300060a0033

2119:5976:0:-:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;7444:11;:9;:11::i;:::-;2119:5976;;7379:11;:9;:11::i;3912:183::-;;;;;;;;;;;;;:::i;:::-;;;;;;;;;;;;;;;;;;;4227:211;;;;;;;;;;;;;:::i;6029:434::-;;;;;;;;;;;;;;;;;;;;;;;;;;-1:-1:-1;6029:434:0;;;;:::i;6954:189::-;;;;;;;;;;;;;:::i;5576:254::-;;;;;;;;;;;;;:::i;5251:230::-;;;;;;;;;;;;;;;;;;;;;;;;;;-1:-1:-1;5251:230:0;;;;:::i;7471:621::-;7607:4;7601:11;6834:66;;7662:14;7644:16;7601:11;7626:51;7781:16;7763;7747:14;7742:3;7731:8;7725:15;7718:5;7705:93;7835:16;7832:1;7827:3;7812:40;7875:6;7899:78;;;;8038:16;8033:3;8026:29;7899:78;7941:16;7936:3;7929:29;3912:183;2889:66;4062:15;;4038:50::o;4227:211::-;3051:66;4405:15;;4374:57::o;6029:434::-;3507:12;:10;:12::i;:::-;3493:26;;:10;:26;;;3485:55;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;6834:66:::1;6254:15:::0;;;6298:39:::1;::::0;;::::1;::::0;;::::1;;;6290:48;;;::::0;::::1;;6373:32:::0;;;6431:24:::1;::::0;::::1;::::0;::::1;::::0;::::1;::::0;;;::::1;3551:1;;6029:434:::0;:::o;6954:189::-;6834:66;7110:15;;7087:49::o;5576:254::-;3727:19;:17;:19::i;:::-;3713:33;;:10;:33;;;3705:70;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;5694:19:::1;:17;:19::i;:::-;5654:60;;5680:12;:10;:12::i;:::-;5654:60;;;;;;;;;;;;5725:44;5749:19;:17;:19::i;:::-;5725:23;:44::i;:::-;5780:42;5819:1;5780:30;:42::i;:::-;5576:254::o:0;5251:230::-;3507:12;:10;:12::i;:::-;3493:26;;:10;:26;;;3485:55;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;5344:22:::1;::::0;::::1;5336:31;;;::::0;::::1;;5378:40;5409:8;5378:30;:40::i;:::-;5434:39;5450:12;:10;:12::i;:::-;5434:39;::::0;;::::1;::::0;;::::1;::::0;;;;::::1;;::::0;::::1;::::0;;;;;;;;;::::1;5251:230:::0;:::o;4507:197::-;2889:66;4655:31;4640:57::o;4773:225::-;3051:66;4942:38;4927:64::o

ipfs://6acd099dfc34ccee396084df959d0fdd422a2c554ac50708d35a07f9a50e18bd