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Contract Name:
DelegateCallProxyManyToOne
Compiler Version
v0.6.12+commit.27d51765
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: GPL-3.0 pragma solidity =0.6.12; import { Proxy } from "@openzeppelin/contracts/proxy/Proxy.sol"; /** * @dev Proxy contract which uses an implementation address shared with many * other proxies. * * An implementation holder contract stores the upgradeable implementation address. * When the proxy is called, it queries the implementation address from the holder * contract and delegatecalls the returned address, forwarding the received calldata * and ether. * * Note: This contract does not verify that the implementation * address is a valid delegation target. The manager must perform * this safety check before updating the implementation on the holder. */ contract DelegateCallProxyManyToOne is Proxy { /* ========== Constants ========== */ // Address that stores the implementation address. address internal immutable _implementationHolder; /* ========== Constructor ========== */ constructor() public { // Calls the sender rather than receiving the address in the constructor // arguments so that the address is computable using create2. _implementationHolder = ProxyDeployer(msg.sender).getImplementationHolder(); } /* ========== Internal Overrides ========== */ /** * @dev Queries the implementation address from the implementation holder. */ function _implementation() internal override view returns (address) { // Queries the implementation address from the implementation holder. (bool success, bytes memory data) = _implementationHolder.staticcall(""); require(success, string(data)); address implementation = abi.decode((data), (address)); require(implementation != address(0), "ERR_NULL_IMPLEMENTATION"); return implementation; } } interface ProxyDeployer { function getImplementationHolder() external view returns (address); }
// SPDX-License-Identifier: GPL-3.0 pragma solidity ^0.6.0; /** * @dev Because we use the code hashes of the proxy contracts for proxy address * derivation, it is important that other packages have access to the correct * values when they import the salt library. */ library CodeHashes { bytes32 internal constant ONE_TO_ONE_CODEHASH = 0x63d9f7b5931b69188c8f6b806606f25892f1bb17b7f7e966fe3a32c04493aee4; bytes32 internal constant MANY_TO_ONE_CODEHASH = 0xa035ad05a1663db5bfd455b99cd7c6ac6bd49269738458eda140e0b78ed53f79; bytes32 internal constant IMPLEMENTATION_HOLDER_CODEHASH = 0x11c370493a726a0ffa93d42b399ad046f1b5a543b6e72f1a64f1488dc1c58f2c; }
// SPDX-License-Identifier: GPL-3.0 pragma solidity =0.6.12; /* ========== External Libraries ========== */ import { Create2 } from "@openzeppelin/contracts/utils/Create2.sol"; import { Address } from "@openzeppelin/contracts/utils/Address.sol"; import { Ownable } from "@openzeppelin/contracts/access/Ownable.sol"; /* ========== Proxy Contracts ========== */ import "./ManyToOneImplementationHolder.sol"; import { DelegateCallProxyManyToOne } from "./DelegateCallProxyManyToOne.sol"; import { DelegateCallProxyOneToOne } from "./DelegateCallProxyOneToOne.sol"; /* ========== Internal Libraries ========== */ import { SaltyLib as Salty } from "./SaltyLib.sol"; import { CodeHashes } from "./CodeHashes.sol"; /* ========== Inheritance ========== */ import "./interfaces/IDelegateCallProxyManager.sol"; /** * @dev Contract that manages deployment and upgrades of delegatecall proxies. * * An implementation identifier can be created on the proxy manager which is * used to specify the logic address for a particular contract type, and to * upgrade the implementation as needed. * * ====== Proxy Types ====== * A one-to-one proxy is a single proxy contract with an upgradeable implementation * address. * * A many-to-one proxy is a single upgradeable implementation address that may be * used by many proxy contracts. * * ====== Access Control ====== * The proxy manager has a single address as its owner. * * The owner is the sole account with the following permissions: * - Create new many-to-one implementations * - Create new one-to-one proxies * - Modify the implementation address of existing proxies * - Lock proxies * - Designate approved deployers * - Remove approved deployers * - Modify the owner address * * Approved deployers may only deploy many-to-one proxies. * * ====== Upgrades ====== * Proxies can be upgraded by the owner if they are not locked. * * Many-to-one proxy implementations are upgraded by calling the holder contract * for the implementation ID being upgraded. * One-to-one proxies are upgraded by calling the proxy contract directly. * * The owner can lock a one-to-one proxy or many-to-one implementation ID so that * it becomes impossible to upgrade. */ contract DelegateCallProxyManager is Ownable, IDelegateCallProxyManager { /* ========== Events ========== */ event DeploymentApprovalGranted(address deployer); event DeploymentApprovalRevoked(address deployer); event ManyToOne_ImplementationCreated( bytes32 implementationID, address implementationAddress ); event ManyToOne_ImplementationUpdated( bytes32 implementationID, address implementationAddress ); event ManyToOne_ImplementationLocked(bytes32 implementationID); event ManyToOne_ProxyDeployed( bytes32 implementationID, address proxyAddress ); event OneToOne_ProxyDeployed( address proxyAddress, address implementationAddress ); event OneToOne_ImplementationUpdated( address proxyAddress, address implementationAddress ); event OneToOne_ImplementationLocked(address proxyAddress); /* ========== Storage ========== */ // Addresses allowed to deploy many-to-one proxies. mapping(address => bool) internal _approvedDeployers; // Maps implementation holders to their implementation IDs. mapping(bytes32 => address) internal _implementationHolders; // Maps implementation holders & proxy addresses to bool stating if they are locked. mapping(address => bool) internal _lockedImplementations; // Temporary value used in the many-to-one proxy constructor. // The many-to-one proxy contract is deployed with create2 and // uses static initialization code for simple address derivation, // so it calls the proxy manager in the constructor to get this // address in order to save it as an immutable in the bytecode. address internal _implementationHolder; /* ========== Modifiers ========== */ modifier onlyApprovedDeployer { address sender = _msgSender(); require(_approvedDeployers[sender] || sender == owner(), "ERR_NOT_APPROVED"); _; } /* ========== Constructor ========== */ constructor() public Ownable() {} /* ========== Access Control ========== */ /** * @dev Allows `deployer` to deploy many-to-one proxies. */ function approveDeployer(address deployer) external override onlyOwner { _approvedDeployers[deployer] = true; emit DeploymentApprovalGranted(deployer); } /** * @dev Prevents `deployer` from deploying many-to-one proxies. */ function revokeDeployerApproval(address deployer) external override onlyOwner { _approvedDeployers[deployer] = false; emit DeploymentApprovalRevoked(deployer); } /* ========== Implementation Management ========== */ /** * @dev Creates a many-to-one proxy relationship. * * Deploys an implementation holder contract which stores the * implementation address for many proxies. The implementation * address can be updated on the holder to change the runtime * code used by all its proxies. * * @param implementationID ID for the implementation, used to identify the * proxies that use it. Also used as the salt in the create2 call when * deploying the implementation holder contract. * @param implementation Address with the runtime code the proxies * should use. */ function createManyToOneProxyRelationship( bytes32 implementationID, address implementation ) external override onlyOwner { // Deploy the implementation holder contract with the implementation // ID as the create2 salt. address implementationHolder = Create2.deploy( 0, implementationID, type(ManyToOneImplementationHolder).creationCode ); // Store the implementation holder address _implementationHolders[implementationID] = implementationHolder; // Sets the implementation address. _setImplementation(implementationHolder, implementation); emit ManyToOne_ImplementationCreated( implementationID, implementation ); } /** * @dev Lock the current implementation for `implementationID` so that it can never be upgraded again. */ function lockImplementationManyToOne(bytes32 implementationID) external override onlyOwner { // Read the implementation holder address from storage. address implementationHolder = _implementationHolders[implementationID]; // Verify that the implementation exists. require(implementationHolder != address(0), "ERR_IMPLEMENTATION_ID"); _lockedImplementations[implementationHolder] = true; emit ManyToOne_ImplementationLocked(implementationID); } /** * @dev Lock the current implementation for `proxyAddress` so that it can never be upgraded again. */ function lockImplementationOneToOne(address proxyAddress) external override onlyOwner { _lockedImplementations[proxyAddress] = true; emit OneToOne_ImplementationLocked(proxyAddress); } /** * @dev Updates the implementation address for a many-to-one * proxy relationship. * * @param implementationID Identifier for the implementation. * @param implementation Address with the runtime code the proxies * should use. */ function setImplementationAddressManyToOne( bytes32 implementationID, address implementation ) external override onlyOwner { // Read the implementation holder address from storage. address implementationHolder = _implementationHolders[implementationID]; // Verify that the implementation exists. require(implementationHolder != address(0), "ERR_IMPLEMENTATION_ID"); // Verify implementation is not locked require(!_lockedImplementations[implementationHolder], "ERR_IMPLEMENTATION_LOCKED"); // Set the implementation address _setImplementation(implementationHolder, implementation); emit ManyToOne_ImplementationUpdated( implementationID, implementation ); } /** * @dev Updates the implementation address for a one-to-one proxy. * * Note: This could work for many-to-one as well if the caller * provides the implementation holder address in place of the * proxy address, as they use the same access control and update * mechanism. * * @param proxyAddress Address of the deployed proxy * @param implementation Address with the runtime code for * the proxy to use. */ function setImplementationAddressOneToOne( address proxyAddress, address implementation ) external override onlyOwner { // Verify proxy is not locked require(!_lockedImplementations[proxyAddress], "ERR_IMPLEMENTATION_LOCKED"); // Set the implementation address _setImplementation(proxyAddress, implementation); emit OneToOne_ImplementationUpdated(proxyAddress, implementation); } /* ========== Proxy Deployment ========== */ /** * @dev Deploy a proxy contract with a one-to-one relationship * with its implementation. * * The proxy will have its own implementation address which can * be updated by the proxy manager. * * @param suppliedSalt Salt provided by the account requesting deployment. * @param implementation Address of the contract with the runtime * code that the proxy should use. */ function deployProxyOneToOne( bytes32 suppliedSalt, address implementation ) external override onlyOwner returns(address proxyAddress) { // Derive the create2 salt from the deployment requester's address // and the requester-supplied salt. bytes32 salt = Salty.deriveOneToOneSalt(_msgSender(), suppliedSalt); // Deploy the proxy proxyAddress = Create2.deploy( 0, salt, type(DelegateCallProxyOneToOne).creationCode ); // Set the implementation address on the new proxy. _setImplementation(proxyAddress, implementation); emit OneToOne_ProxyDeployed(proxyAddress, implementation); } /** * @dev Deploy a proxy with a many-to-one relationship with its implemenation. * * The proxy will call the implementation holder for every transaction to * determine the address to use in calls. * * @param implementationID Identifier for the proxy's implementation. * @param suppliedSalt Salt provided by the account requesting deployment. */ function deployProxyManyToOne(bytes32 implementationID, bytes32 suppliedSalt) external override onlyApprovedDeployer returns(address proxyAddress) { // Read the implementation holder address from storage. address implementationHolder = _implementationHolders[implementationID]; // Verify that the implementation exists. require(implementationHolder != address(0), "ERR_IMPLEMENTATION_ID"); // Derive the create2 salt from the deployment requester's address, the // implementation ID and the requester-supplied salt. bytes32 salt = Salty.deriveManyToOneSalt( _msgSender(), implementationID, suppliedSalt ); // Set the implementation holder address in storage so the proxy // constructor can query it. _implementationHolder = implementationHolder; // Deploy the proxy, which will query the implementation holder address // and save it as an immutable in the contract bytecode. proxyAddress = Create2.deploy( 0, salt, type(DelegateCallProxyManyToOne).creationCode ); // Remove the address from temporary storage. _implementationHolder = address(0); emit ManyToOne_ProxyDeployed( implementationID, proxyAddress ); } /* ========== Queries ========== */ /** * @dev Returns a boolean stating whether `implementationID` is locked. */ function isImplementationLocked(bytes32 implementationID) external override view returns (bool) { // Read the implementation holder address from storage. address implementationHolder = _implementationHolders[implementationID]; // Verify that the implementation exists. require(implementationHolder != address(0), "ERR_IMPLEMENTATION_ID"); return _lockedImplementations[implementationHolder]; } /** * @dev Returns a boolean stating whether `proxyAddress` is locked. */ function isImplementationLocked(address proxyAddress) external override view returns (bool) { return _lockedImplementations[proxyAddress]; } /** * @dev Returns a boolean stating whether `deployer` is allowed to deploy many-to-one * proxies. */ function isApprovedDeployer(address deployer) external override view returns (bool) { return _approvedDeployers[deployer]; } /** * @dev Queries the temporary storage value `_implementationHolder`. * This is used in the constructor of the many-to-one proxy contract * so that the create2 address is static (adding constructor arguments * would change the codehash) and the implementation holder can be * stored as a constant. */ function getImplementationHolder() external override view returns (address) { return _implementationHolder; } /** * @dev Returns the address of the implementation holder contract * for `implementationID`. */ function getImplementationHolder( bytes32 implementationID ) external override view returns (address) { return _implementationHolders[implementationID]; } /** * @dev Computes the create2 address for a one-to-one proxy requested * by `originator` using `suppliedSalt`. * * @param originator Address of the account requesting deployment. * @param suppliedSalt Salt provided by the account requesting deployment. */ function computeProxyAddressOneToOne( address originator, bytes32 suppliedSalt ) external override view returns (address) { bytes32 salt = Salty.deriveOneToOneSalt(originator, suppliedSalt); return Create2.computeAddress(salt, CodeHashes.ONE_TO_ONE_CODEHASH); } /** * @dev Computes the create2 address for a many-to-one proxy for the * implementation `implementationID` requested by `originator` using * `suppliedSalt`. * * @param originator Address of the account requesting deployment. * @param implementationID The identifier for the contract implementation. * @param suppliedSalt Salt provided by the account requesting deployment. */ function computeProxyAddressManyToOne( address originator, bytes32 implementationID, bytes32 suppliedSalt ) external override view returns (address) { bytes32 salt = Salty.deriveManyToOneSalt( originator, implementationID, suppliedSalt ); return Create2.computeAddress(salt, CodeHashes.MANY_TO_ONE_CODEHASH); } /** * @dev Computes the create2 address of the implementation holder * for `implementationID`. * * @param implementationID The identifier for the contract implementation. */ function computeHolderAddressManyToOne(bytes32 implementationID) public override view returns (address) { return Create2.computeAddress( implementationID, CodeHashes.IMPLEMENTATION_HOLDER_CODEHASH ); } /* ========== Internal Functions ========== */ /** * @dev Sets the implementation address for a one-to-one proxy or * many-to-one implementation holder. Both use the same access * control and update mechanism, which is the receipt of a call * from the proxy manager with the abi-encoded implementation address * as the only calldata. * * Note: Verifies that the implementation address is a contract. * * @param proxyOrHolder Address of the one-to-one proxy or * many-to-one implementation holder contract. * @param implementation Address of the contract with the runtime * code that the proxy or proxies should use. */ function _setImplementation( address proxyOrHolder, address implementation ) internal { // Verify that the implementation address is a contract. require(Address.isContract(implementation), "ERR_NOT_CONTRACT"); // Set the implementation address on the contract. // solium-disable-next-line security/no-low-level-calls (bool success,) = proxyOrHolder.call(abi.encode(implementation)); require(success, "ERR_SET_ADDRESS_REVERT"); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.6.0; /** * @dev Helper to make usage of the `CREATE2` EVM opcode easier and safer. * `CREATE2` can be used to compute in advance the address where a smart * contract will be deployed, which allows for interesting new mechanisms known * as 'counterfactual interactions'. * * See the https://eips.ethereum.org/EIPS/eip-1014#motivation[EIP] for more * information. */ library Create2 { /** * @dev Deploys a contract using `CREATE2`. The address where the contract * will be deployed can be known in advance via {computeAddress}. * * The bytecode for a contract can be obtained from Solidity with * `type(contractName).creationCode`. * * Requirements: * * - `bytecode` must not be empty. * - `salt` must have not been used for `bytecode` already. * - the factory must have a balance of at least `amount`. * - if `amount` is non-zero, `bytecode` must have a `payable` constructor. */ function deploy(uint256 amount, bytes32 salt, bytes memory bytecode) internal returns (address) { address addr; require(address(this).balance >= amount, "Create2: insufficient balance"); require(bytecode.length != 0, "Create2: bytecode length is zero"); // solhint-disable-next-line no-inline-assembly assembly { addr := create2(amount, add(bytecode, 0x20), mload(bytecode), salt) } require(addr != address(0), "Create2: Failed on deploy"); return addr; } /** * @dev Returns the address where a contract will be stored if deployed via {deploy}. Any change in the * `bytecodeHash` or `salt` will result in a new destination address. */ function computeAddress(bytes32 salt, bytes32 bytecodeHash) internal view returns (address) { return computeAddress(salt, bytecodeHash, address(this)); } /** * @dev Returns the address where a contract will be stored if deployed via {deploy} from a contract located at * `deployer`. If `deployer` is this contract's address, returns the same value as {computeAddress}. */ function computeAddress(bytes32 salt, bytes32 bytecodeHash, address deployer) internal pure returns (address) { bytes32 _data = keccak256( abi.encodePacked(bytes1(0xff), deployer, salt, bytecodeHash) ); return address(uint256(_data)); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.6.2; /** * @dev Collection of functions related to the address type */ library Address { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== */ function isContract(address account) internal view returns (bool) { // This method relies in extcodesize, which returns 0 for contracts in // construction, since the code is only stored at the end of the // constructor execution. uint256 size; // solhint-disable-next-line no-inline-assembly assembly { size := extcodesize(account) } return size > 0; } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); // solhint-disable-next-line avoid-low-level-calls, avoid-call-value (bool success, ) = recipient.call{ value: amount }(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain`call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { return _functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); return _functionCallWithValue(target, data, value, errorMessage); } function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) { require(isContract(target), "Address: call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.call{ value: weiValue }(data); if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly // solhint-disable-next-line no-inline-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } }
// SPDX-License-Identifier: MIT pragma solidity ^0.6.0; import "../GSN/Context.sol"; /** * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * By default, the owner account will be the one that deploys the contract. This * can later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. */ contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the deployer as the initial owner. */ constructor () internal { address msgSender = _msgSender(); _owner = msgSender; emit OwnershipTransferred(address(0), msgSender); } /** * @dev Returns the address of the current owner. */ function owner() public view returns (address) { return _owner; } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(_owner == _msgSender(), "Ownable: caller is not the owner"); _; } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. */ function renounceOwnership() public virtual onlyOwner { emit OwnershipTransferred(_owner, address(0)); _owner = address(0); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. */ function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); emit OwnershipTransferred(_owner, newOwner); _owner = newOwner; } }
// SPDX-License-Identifier: MIT pragma solidity ^0.6.0; /* * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with GSN meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address payable) { return msg.sender; } function _msgData() internal view virtual returns (bytes memory) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } }
// SPDX-License-Identifier: GPL-3.0 pragma solidity =0.6.12; /** * @dev The ManyToOneImplementationHolder stores an upgradeable implementation address * in storage, which many-to-one proxies query at execution time to determine which * contract to delegate to. * * The manager can upgrade the implementation address by calling the holder with the * abi-encoded address as calldata. If any other account calls the implementation holder, * it will return the implementation address. * * This pattern was inspired by the DharmaUpgradeBeacon from 0age * https://github.com/dharma-eng/dharma-smart-wallet/blob/master/contracts/upgradeability/smart-wallet/DharmaUpgradeBeacon.sol */ contract ManyToOneImplementationHolder { /* --- Storage --- */ address internal immutable _manager; address internal _implementation; /* --- Constructor --- */ constructor() public { _manager = msg.sender; } /** * @dev Fallback function for the contract. * * Used by proxies to read the implementation address and used * by the proxy manager to set the implementation address. * * If called by the owner, reads the implementation address from * calldata (must be abi-encoded) and stores it to the first slot. * * Otherwise, returns the stored implementation address. */ fallback() external payable { if (msg.sender != _manager) { assembly { mstore(0, sload(0)) return(0, 32) } } assembly { sstore(0, calldataload(0)) } } }
// SPDX-License-Identifier: MIT pragma solidity ^0.6.0; /** * @dev This abstract contract provides a fallback function that delegates all calls to another contract using the EVM * instruction `delegatecall`. We refer to the second contract as the _implementation_ behind the proxy, and it has to * be specified by overriding the virtual {_implementation} function. * * Additionally, delegation to the implementation can be triggered manually through the {_fallback} function, or to a * different contract through the {_delegate} function. * * The success and return data of the delegated call will be returned back to the caller of the proxy. */ abstract contract Proxy { /** * @dev Delegates the current call to `implementation`. * * This function does not return to its internall call site, it will return directly to the external caller. */ function _delegate(address implementation) internal { // solhint-disable-next-line no-inline-assembly assembly { // Copy msg.data. We take full control of memory in this inline assembly // block because it will not return to Solidity code. We overwrite the // Solidity scratch pad at memory position 0. calldatacopy(0, 0, calldatasize()) // Call the implementation. // out and outsize are 0 because we don't know the size yet. let result := delegatecall(gas(), implementation, 0, calldatasize(), 0, 0) // Copy the returned data. returndatacopy(0, 0, returndatasize()) switch result // delegatecall returns 0 on error. case 0 { revert(0, returndatasize()) } default { return(0, returndatasize()) } } } /** * @dev This is a virtual function that should be overriden so it returns the address to which the fallback function * and {_fallback} should delegate. */ function _implementation() internal virtual view returns (address); /** * @dev Delegates the current call to the address returned by `_implementation()`. * * This function does not return to its internall call site, it will return directly to the external caller. */ function _fallback() internal { _beforeFallback(); _delegate(_implementation()); } /** * @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if no other * function in the contract matches the call data. */ fallback () payable external { _fallback(); } /** * @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if call data * is empty. */ receive () payable external { _fallback(); } /** * @dev Hook that is called before falling back to the implementation. Can happen as part of a manual `_fallback` * call, or as part of the Solidity `fallback` or `receive` functions. * * If overriden should call `super._beforeFallback()`. */ function _beforeFallback() internal virtual { } }
// SPDX-License-Identifier: GPL-3.0 pragma solidity =0.6.12; import { Proxy } from "@openzeppelin/contracts/proxy/Proxy.sol"; /** * @dev Upgradeable delegatecall proxy for a single contract. * * This proxy stores an implementation address which can be upgraded by the proxy manager. * * To upgrade the implementation, the manager calls the proxy with the abi encoded implementation address. * * If any other account calls the proxy, it will delegatecall the implementation address with the received * calldata and ether. If the call succeeds, it will return with the received returndata. * If it reverts, it will revert with the received revert data. * * Note: The storage slot for the implementation address is: * `bytes32(uint256(keccak256("IMPLEMENTATION_ADDRESS")) + 1)` * This slot must not be used by the implementation contract. * * Note: This contract does not verify that the implementation address is a valid delegation target. * The manager must perform this safety check. */ contract DelegateCallProxyOneToOne is Proxy { /* ========== Constants ========== */ address internal immutable _manager; /* ========== Constructor ========== */ constructor() public { _manager = msg.sender ; } /* ========== Internal Overrides ========== */ /** * @dev Reads the implementation address from storage. */ function _implementation() internal override view returns (address) { address implementation; assembly { implementation := sload( // bytes32(uint256(keccak256("IMPLEMENTATION_ADDRESS")) + 1) 0x913bd12b32b36f36cedaeb6e043912bceb97022755958701789d3108d33a045a ) } return implementation; } /** * @dev Hook that is called before falling back to the implementation. * * Checks if the call is from the owner. * If it is, reads the abi-encoded implementation address from calldata and stores * it at the slot `bytes32(uint256(keccak256("IMPLEMENTATION_ADDRESS")) + 1)`, * then returns with no data. * If it is not, continues execution with the fallback function. */ function _beforeFallback() internal override { if (msg.sender != _manager) { super._beforeFallback(); } else { assembly { sstore( // bytes32(uint256(keccak256("IMPLEMENTATION_ADDRESS")) + 1) 0x913bd12b32b36f36cedaeb6e043912bceb97022755958701789d3108d33a045a, calldataload(0) ) return(0, 0) } } } }
// SPDX-License-Identifier: GPL-3.0 pragma solidity ^0.6.0; /* --- External Libraries --- */ import { Create2 } from "@openzeppelin/contracts/utils/Create2.sol"; /* --- Proxy Contracts --- */ import { CodeHashes } from "./CodeHashes.sol"; /** * @dev Library for computing create2 salts and addresses for proxies * deployed by `DelegateCallProxyManager`. * * Because the proxy factory is meant to be used by multiple contracts, * we use a salt derivation pattern that includes the address of the * contract that requested the proxy deployment, a salt provided by that * contract and the implementation ID used (for many-to-one proxies only). */ library SaltyLib { /* --- Salt Derivation --- */ /** * @dev Derives the create2 salt for a many-to-one proxy. * * Many different contracts in the Indexed framework may use the * same implementation contract, and they all use the same init * code, so we derive the actual create2 salt from a combination * of the implementation ID, the address of the account requesting * deployment and the user-supplied salt. * * @param originator Address of the account requesting deployment. * @param implementationID The identifier for the contract implementation. * @param suppliedSalt Salt provided by the account requesting deployment. */ function deriveManyToOneSalt( address originator, bytes32 implementationID, bytes32 suppliedSalt ) internal pure returns (bytes32) { return keccak256( abi.encodePacked( originator, implementationID, suppliedSalt ) ); } /** * @dev Derives the create2 salt for a one-to-one proxy. * * @param originator Address of the account requesting deployment. * @param suppliedSalt Salt provided by the account requesting deployment. */ function deriveOneToOneSalt( address originator, bytes32 suppliedSalt ) internal pure returns (bytes32) { return keccak256(abi.encodePacked(originator, suppliedSalt)); } /* --- Address Derivation --- */ /** * @dev Computes the create2 address for a one-to-one proxy deployed * by `deployer` (the factory) when requested by `originator` using * `suppliedSalt`. * * @param deployer Address of the proxy factory. * @param originator Address of the account requesting deployment. * @param suppliedSalt Salt provided by the account requesting deployment. */ function computeProxyAddressOneToOne( address deployer, address originator, bytes32 suppliedSalt ) internal pure returns (address) { bytes32 salt = deriveOneToOneSalt(originator, suppliedSalt); return Create2.computeAddress(salt, CodeHashes.ONE_TO_ONE_CODEHASH, deployer); } /** * @dev Computes the create2 address for a many-to-one proxy for the * implementation `implementationID` deployed by `deployer` (the factory) * when requested by `originator` using `suppliedSalt`. * * @param deployer Address of the proxy factory. * @param originator Address of the account requesting deployment. * @param implementationID The identifier for the contract implementation. * @param suppliedSalt Salt provided by the account requesting deployment. */ function computeProxyAddressManyToOne( address deployer, address originator, bytes32 implementationID, bytes32 suppliedSalt ) internal pure returns (address) { bytes32 salt = deriveManyToOneSalt( originator, implementationID, suppliedSalt ); return Create2.computeAddress(salt, CodeHashes.MANY_TO_ONE_CODEHASH, deployer); } /** * @dev Computes the create2 address of the implementation holder * for `implementationID`. * * @param deployer Address of the proxy factory. * @param implementationID The identifier for the contract implementation. */ function computeHolderAddressManyToOne( address deployer, bytes32 implementationID ) internal pure returns (address) { return Create2.computeAddress( implementationID, CodeHashes.IMPLEMENTATION_HOLDER_CODEHASH, deployer ); } }
// SPDX-License-Identifier: GPL-3.0 pragma solidity ^0.6.0; /** * @dev Contract that manages deployment and upgrades of delegatecall proxies. * * An implementation identifier can be created on the proxy manager which is * used to specify the logic address for a particular contract type, and to * upgrade the implementation as needed. * * A one-to-one proxy is a single proxy contract with an upgradeable implementation * address. * * A many-to-one proxy is a single upgradeable implementation address that may be * used by many proxy contracts. */ interface IDelegateCallProxyManager { /* ========== Events ========== */ event DeploymentApprovalGranted(address deployer); event DeploymentApprovalRevoked(address deployer); event ManyToOne_ImplementationCreated( bytes32 implementationID, address implementationAddress ); event ManyToOne_ImplementationUpdated( bytes32 implementationID, address implementationAddress ); event ManyToOne_ProxyDeployed( bytes32 implementationID, address proxyAddress ); event OneToOne_ProxyDeployed( address proxyAddress, address implementationAddress ); event OneToOne_ImplementationUpdated( address proxyAddress, address implementationAddress ); /* ========== Controls ========== */ /** * @dev Allows `deployer` to deploy many-to-one proxies. */ function approveDeployer(address deployer) external; /** * @dev Prevents `deployer` from deploying many-to-one proxies. */ function revokeDeployerApproval(address deployer) external; /* ========== Implementation Management ========== */ /** * @dev Creates a many-to-one proxy relationship. * * Deploys an implementation holder contract which stores the * implementation address for many proxies. The implementation * address can be updated on the holder to change the runtime * code used by all its proxies. * * @param implementationID ID for the implementation, used to identify the * proxies that use it. Also used as the salt in the create2 call when * deploying the implementation holder contract. * @param implementation Address with the runtime code the proxies * should use. */ function createManyToOneProxyRelationship( bytes32 implementationID, address implementation ) external; /** * @dev Lock the current implementation for `proxyAddress` so that it can never be upgraded again. */ function lockImplementationManyToOne(bytes32 implementationID) external; /** * @dev Lock the current implementation for `proxyAddress` so that it can never be upgraded again. */ function lockImplementationOneToOne(address proxyAddress) external; /** * @dev Updates the implementation address for a many-to-one * proxy relationship. * * @param implementationID Identifier for the implementation. * @param implementation Address with the runtime code the proxies * should use. */ function setImplementationAddressManyToOne( bytes32 implementationID, address implementation ) external; /** * @dev Updates the implementation address for a one-to-one proxy. * * Note: This could work for many-to-one as well if the caller * provides the implementation holder address in place of the * proxy address, as they use the same access control and update * mechanism. * * @param proxyAddress Address of the deployed proxy * @param implementation Address with the runtime code for * the proxy to use. */ function setImplementationAddressOneToOne( address proxyAddress, address implementation ) external; /* ========== Proxy Deployment ========== */ /** * @dev Deploy a proxy contract with a one-to-one relationship * with its implementation. * * The proxy will have its own implementation address which can * be updated by the proxy manager. * * @param suppliedSalt Salt provided by the account requesting deployment. * @param implementation Address of the contract with the runtime * code that the proxy should use. */ function deployProxyOneToOne( bytes32 suppliedSalt, address implementation ) external returns(address proxyAddress); /** * @dev Deploy a proxy with a many-to-one relationship with its implemenation. * * The proxy will call the implementation holder for every transaction to * determine the address to use in calls. * * @param implementationID Identifier for the proxy's implementation. * @param suppliedSalt Salt provided by the account requesting deployment. */ function deployProxyManyToOne( bytes32 implementationID, bytes32 suppliedSalt ) external returns(address proxyAddress); /* ========== Queries ========== */ /** * @dev Returns a boolean stating whether `implementationID` is locked. */ function isImplementationLocked(bytes32 implementationID) external view returns (bool); /** * @dev Returns a boolean stating whether `proxyAddress` is locked. */ function isImplementationLocked(address proxyAddress) external view returns (bool); /** * @dev Returns a boolean stating whether `deployer` is allowed to deploy many-to-one * proxies. */ function isApprovedDeployer(address deployer) external view returns (bool); /** * @dev Queries the temporary storage value `_implementationHolder`. * This is used in the constructor of the many-to-one proxy contract * so that the create2 address is static (adding constructor arguments * would change the codehash) and the implementation holder can be * stored as a constant. */ function getImplementationHolder() external view returns (address); /** * @dev Returns the address of the implementation holder contract * for `implementationID`. */ function getImplementationHolder(bytes32 implementationID) external view returns (address); /** * @dev Computes the create2 address for a one-to-one proxy requested * by `originator` using `suppliedSalt`. * * @param originator Address of the account requesting deployment. * @param suppliedSalt Salt provided by the account requesting deployment. */ function computeProxyAddressOneToOne( address originator, bytes32 suppliedSalt ) external view returns (address); /** * @dev Computes the create2 address for a many-to-one proxy for the * implementation `implementationID` requested by `originator` using * `suppliedSalt`. * * @param originator Address of the account requesting deployment. * @param implementationID The identifier for the contract implementation. * @param suppliedSalt Salt provided by the account requesting deployment. */ function computeProxyAddressManyToOne( address originator, bytes32 implementationID, bytes32 suppliedSalt ) external view returns (address); /** * @dev Computes the create2 address of the implementation holder * for `implementationID`. * * @param implementationID The identifier for the contract implementation. */ function computeHolderAddressManyToOne(bytes32 implementationID) external view returns (address); }
{ "metadata": { "useLiteralContent": false }, "optimizer": { "enabled": true, "runs": 200 }, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "abi" ] } } }
Contract Security Audit
- No Contract Security Audit Submitted- Submit Audit Here
[{"inputs":[],"stateMutability":"nonpayable","type":"constructor"},{"stateMutability":"payable","type":"fallback"},{"stateMutability":"payable","type":"receive"}]
Contract Creation Code
60a060405234801561001057600080fd5b50336001600160a01b0316631da0505d6040518163ffffffff1660e01b815260040160206040518083038186803b15801561004a57600080fd5b505afa15801561005e573d6000803e3d6000fd5b505050506040513d602081101561007457600080fd5b5051606081901b6001600160601b0319166080526001600160a01b031661020a6100a7600039806046525061020a6000f3fe60806040523661001357610011610017565b005b6100115b61001f61002f565b61002f61002a610031565b6101b0565b565b60405160009081906060906001600160a01b037f0000000000000000000000000000000000000000000000000000000000000000169083818181855afa9150503d806000811461009d576040519150601f19603f3d011682016040523d82523d6000602084013e6100a2565b606091505b50915091508181906101325760405162461bcd60e51b81526004018080602001828103825283818151815260200191508051906020019080838360005b838110156100f75781810151838201526020016100df565b50505050905090810190601f1680156101245780820380516001836020036101000a031916815260200191505b509250505060405180910390fd5b50600081806020019051602081101561014a57600080fd5b505190506001600160a01b0381166101a9576040805162461bcd60e51b815260206004820152601760248201527f4552525f4e554c4c5f494d504c454d454e544154494f4e000000000000000000604482015290519081900360640190fd5b9250505090565b3660008037600080366000845af43d6000803e8080156101cf573d6000f35b3d6000fdfea26469706673582212209b0f8ebe5564b0d1fb938189635d5a7b33088937e2d48e4ff88b4fcf7c850bb164736f6c634300060c0033
Deployed Bytecode
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
Deployed Bytecode Sourcemap
704:1052:7:-:0;;;;;;2807:11:2;:9;:11::i;:::-;704:1052:7;;2591:11:2;2253:102;2293:17;:15;:17::i;:::-;2320:28;2330:17;:15;:17::i;:::-;2320:9;:28::i;:::-;2253:102::o;1336:418:7:-;1520:36;;1395:7;;;;1499:17;;1520:21;-1:-1:-1;;;;;1520:32:7;;1395:7;1520:36;1395:7;1520:36;:32;:36;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;1484:72;;;;1570:7;1586:4;1562:30;;;;;-1:-1:-1;;;1562:30:7;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;1598:22;1635:4;1623:29;;;;;;;;;;;;;;;-1:-1:-1;1623:29:7;;-1:-1:-1;;;;;;1666:28:7;;1658:64;;;;;-1:-1:-1;;;1658:64:7;;;;;;;;;;;;;;;;;;;;;;;;;;;;1735:14;-1:-1:-1;;;1336:418:7;:::o;886:887:2:-;1272:14;1269:1;1266;1253:34;1486:1;1483;1467:14;1464:1;1448:14;1441:5;1428:60;1562:16;1559:1;1556;1541:38;1600:6;1667:38;;;;1738:16;1735:1;1728:27;1667:38;1686:16;1683:1;1676:27
Swarm Source
ipfs://9b0f8ebe5564b0d1fb938189635d5a7b33088937e2d48e4ff88b4fcf7c850bb1
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Multichain Portfolio | 30 Chains
Chain | Token | Portfolio % | Price | Amount | Value |
---|---|---|---|---|---|
POL | 100.00% | $51.35 | 0.1169 | $6 |
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