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Latest 25 from a total of 84 transactions
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Transfer Locked ... | 20142746 | 68 days ago | IN | 0 ETH | 0.00101097 | ||||
Set Delegation P... | 20085378 | 76 days ago | IN | 0 ETH | 0.00071618 | ||||
Set Delegation P... | 19397573 | 172 days ago | IN | 0 ETH | 0.00279571 | ||||
Set Delegation P... | 18669303 | 274 days ago | IN | 0 ETH | 0.00192148 | ||||
Set Delegation P... | 18666528 | 275 days ago | IN | 0 ETH | 0.00212203 | ||||
Transfer Locked ... | 18666354 | 275 days ago | IN | 0 ETH | 0.00882807 | ||||
Set Delegation P... | 18638149 | 278 days ago | IN | 0 ETH | 0.00120799 | ||||
Set Delegation P... | 18280033 | 329 days ago | IN | 0 ETH | 0.0007406 | ||||
Transfer Locked ... | 18279906 | 329 days ago | IN | 0 ETH | 0.00228339 | ||||
Set Delegation P... | 18265282 | 331 days ago | IN | 0 ETH | 0.00111218 | ||||
Set Delegation P... | 18009768 | 366 days ago | IN | 0 ETH | 0.00086783 | ||||
Transfer Locked ... | 18009191 | 367 days ago | IN | 0 ETH | 0.00314031 | ||||
Transfer Locked ... | 18008977 | 367 days ago | IN | 0 ETH | 0.00376915 | ||||
Set L2Wallet Add... | 18008917 | 367 days ago | IN | 0 ETH | 0.00127809 | ||||
Set Delegation P... | 17687630 | 412 days ago | IN | 0 ETH | 0.00151694 | ||||
Set Rewards Dest... | 17253480 | 473 days ago | IN | 0 ETH | 0.0021425 | ||||
Set Rewards Dest... | 16665603 | 556 days ago | IN | 0 ETH | 0.00113647 | ||||
Set Delegation P... | 16665403 | 556 days ago | IN | 0 ETH | 0.00174726 | ||||
Set Operator | 16665390 | 556 days ago | IN | 0 ETH | 0.00183 | ||||
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Set Delegation P... | 15703443 | 690 days ago | IN | 0 ETH | 0.00035589 | ||||
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Set Delegation P... | 15323616 | 748 days ago | IN | 0 ETH | 0.00071179 | ||||
Set Delegation P... | 14416455 | 893 days ago | IN | 0 ETH | 0.00133499 |
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11469752 | 1350 days ago | Contract Creation | 0 ETH |
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Minimal Proxy Contract for 0xbe5e630383b5baecf0db7b15c50d410edd5a2255
Contract Name:
GraphTokenLockWallet
Compiler Version
v0.7.3+commit.9bfce1f6
Optimization Enabled:
No with 200 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: MIT pragma solidity ^0.7.3; import "@openzeppelin/contracts/utils/Address.sol"; import "@openzeppelin/contracts/math/SafeMath.sol"; import "@openzeppelin/contracts/token/ERC20/IERC20.sol"; import "@openzeppelin/contracts/token/ERC20/SafeERC20.sol"; import "./GraphTokenLock.sol"; import "./IGraphTokenLockManager.sol"; /** * @title GraphTokenLockWallet * @notice This contract is built on top of the base GraphTokenLock functionality. * It allows wallet beneficiaries to use the deposited funds to perform specific function calls * on specific contracts. * * The idea is that supporters with locked tokens can participate in the protocol * but disallow any release before the vesting/lock schedule. * The beneficiary can issue authorized function calls to this contract that will * get forwarded to a target contract. A target contract is any of our protocol contracts. * The function calls allowed are queried to the GraphTokenLockManager, this way * the same configuration can be shared for all the created lock wallet contracts. * * NOTE: Contracts used as target must have its function signatures checked to avoid collisions * with any of this contract functions. * Beneficiaries need to approve the use of the tokens to the protocol contracts. For convenience * the maximum amount of tokens is authorized. */ contract GraphTokenLockWallet is GraphTokenLock { using SafeMath for uint256; using SafeERC20 for IERC20; // -- State -- IGraphTokenLockManager public manager; uint256 public usedAmount; uint256 private constant MAX_UINT256 = 2**256 - 1; // -- Events -- event ManagerUpdated(address indexed _oldManager, address indexed _newManager); event TokenDestinationsApproved(); event TokenDestinationsRevoked(); // Initializer function initialize( address _manager, address _owner, address _beneficiary, address _token, uint256 _managedAmount, uint256 _startTime, uint256 _endTime, uint256 _periods, uint256 _releaseStartTime, uint256 _vestingCliffTime, Revocability _revocable ) external { _initialize( _owner, _beneficiary, _token, _managedAmount, _startTime, _endTime, _periods, _releaseStartTime, _vestingCliffTime, _revocable ); _setManager(_manager); } // -- Admin -- /** * @notice Sets a new manager for this contract * @param _newManager Address of the new manager */ function setManager(address _newManager) external onlyOwner { _setManager(_newManager); } /** * @dev Sets a new manager for this contract * @param _newManager Address of the new manager */ function _setManager(address _newManager) private { require(_newManager != address(0), "Manager cannot be empty"); require(Address.isContract(_newManager), "Manager must be a contract"); address oldManager = address(manager); manager = IGraphTokenLockManager(_newManager); emit ManagerUpdated(oldManager, _newManager); } // -- Beneficiary -- /** * @notice Approves protocol access of the tokens managed by this contract * @dev Approves all token destinations registered in the manager to pull tokens */ function approveProtocol() external onlyBeneficiary { address[] memory dstList = manager.getTokenDestinations(); for (uint256 i = 0; i < dstList.length; i++) { token.safeApprove(dstList[i], MAX_UINT256); } emit TokenDestinationsApproved(); } /** * @notice Revokes protocol access of the tokens managed by this contract * @dev Revokes approval to all token destinations in the manager to pull tokens */ function revokeProtocol() external onlyBeneficiary { address[] memory dstList = manager.getTokenDestinations(); for (uint256 i = 0; i < dstList.length; i++) { token.safeApprove(dstList[i], 0); } emit TokenDestinationsRevoked(); } /** * @notice Forward authorized contract calls to protocol contracts * @dev Fallback function can be called by the beneficiary only if function call is allowed */ fallback() external payable { // Only beneficiary can forward calls require(msg.sender == beneficiary, "Unauthorized caller"); // Function call validation address _target = manager.getAuthFunctionCallTarget(msg.sig); require(_target != address(0), "Unauthorized function"); uint256 oldBalance = currentBalance(); // Call function with data Address.functionCall(_target, msg.data); // Tracked used tokens in the protocol // We do this check after balances were updated by the forwarded call // Check is only enforced for revocable contracts to save some gas if (revocable == Revocability.Enabled) { // Track contract balance change uint256 newBalance = currentBalance(); if (newBalance < oldBalance) { // Outflow uint256 diff = oldBalance.sub(newBalance); usedAmount = usedAmount.add(diff); } else { // Inflow: We can receive profits from the protocol, that could make usedAmount to // underflow. We set it to zero in that case. uint256 diff = newBalance.sub(oldBalance); usedAmount = (diff >= usedAmount) ? 0 : usedAmount.sub(diff); } require(usedAmount <= vestedAmount(), "Cannot use more tokens than vested amount"); } } }
// SPDX-License-Identifier: MIT pragma solidity >=0.6.2 <0.8.0; /** * @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 on 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"); require(isContract(target), "Address: call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.call{ value: value }(data); return _verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data, string memory errorMessage) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.staticcall(data); return _verifyCallResult(success, returndata, errorMessage); } function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) { 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 <0.8.0; /** * @dev Wrappers over Solidity's arithmetic operations with added overflow * checks. * * Arithmetic operations in Solidity wrap on overflow. This can easily result * in bugs, because programmers usually assume that an overflow raises an * error, which is the standard behavior in high level programming languages. * `SafeMath` restores this intuition by reverting the transaction when an * operation overflows. * * Using this library instead of the unchecked operations eliminates an entire * class of bugs, so it's recommended to use it always. */ library SafeMath { /** * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * * - Addition cannot overflow. */ function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } /** * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b) internal pure returns (uint256) { return sub(a, b, "SafeMath: subtraction overflow"); } /** * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b <= a, errorMessage); uint256 c = a - b; return c; } /** * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `*` operator. * * Requirements: * * - Multiplication cannot overflow. */ function mul(uint256 a, uint256 b) internal pure returns (uint256) { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) { return 0; } uint256 c = a * b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } /** * @dev Returns the integer division of two unsigned integers. Reverts on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b) internal pure returns (uint256) { return div(a, b, "SafeMath: division by zero"); } /** * @dev Returns the integer division of two unsigned integers. Reverts with custom message on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b > 0, errorMessage); uint256 c = a / b; // assert(a == b * c + a % b); // There is no case in which this doesn't hold return c; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b) internal pure returns (uint256) { return mod(a, b, "SafeMath: modulo by zero"); } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts with custom message when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b != 0, errorMessage); return a % b; } }
// SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20 { /** * @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address recipient, uint256 amount) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 amount) external returns (bool); /** * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); /** * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. */ event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. */ event Approval(address indexed owner, address indexed spender, uint256 value); }
// SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; import "./IERC20.sol"; import "../../math/SafeMath.sol"; import "../../utils/Address.sol"; /** * @title SafeERC20 * @dev Wrappers around ERC20 operations that throw on failure (when the token * contract returns false). Tokens that return no value (and instead revert or * throw on failure) are also supported, non-reverting calls are assumed to be * successful. * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract, * which allows you to call the safe operations as `token.safeTransfer(...)`, etc. */ library SafeERC20 { using SafeMath for uint256; using Address for address; function safeTransfer(IERC20 token, address to, uint256 value) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value)); } function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value)); } /** * @dev Deprecated. This function has issues similar to the ones found in * {IERC20-approve}, and its usage is discouraged. * * Whenever possible, use {safeIncreaseAllowance} and * {safeDecreaseAllowance} instead. */ function safeApprove(IERC20 token, address spender, uint256 value) internal { // safeApprove should only be called when setting an initial allowance, // or when resetting it to zero. To increase and decrease it, use // 'safeIncreaseAllowance' and 'safeDecreaseAllowance' // solhint-disable-next-line max-line-length require((value == 0) || (token.allowance(address(this), spender) == 0), "SafeERC20: approve from non-zero to non-zero allowance" ); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value)); } function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 newAllowance = token.allowance(address(this), spender).add(value); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 newAllowance = token.allowance(address(this), spender).sub(value, "SafeERC20: decreased allowance below zero"); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } /** * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement * on the return value: the return value is optional (but if data is returned, it must not be false). * @param token The token targeted by the call. * @param data The call data (encoded using abi.encode or one of its variants). */ function _callOptionalReturn(IERC20 token, bytes memory data) private { // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since // we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that // the target address contains contract code and also asserts for success in the low-level call. bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed"); if (returndata.length > 0) { // Return data is optional // solhint-disable-next-line max-line-length require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed"); } } }
// SPDX-License-Identifier: MIT pragma solidity ^0.7.3; import "@openzeppelin/contracts/math/SafeMath.sol"; import "@openzeppelin/contracts/token/ERC20/IERC20.sol"; import "@openzeppelin/contracts/token/ERC20/SafeERC20.sol"; import "./Ownable.sol"; import "./MathUtils.sol"; import "./IGraphTokenLock.sol"; /** * @title GraphTokenLock * @notice Contract that manages an unlocking schedule of tokens. * @dev The contract lock manage a number of tokens deposited into the contract to ensure that * they can only be released under certain time conditions. * * This contract implements a release scheduled based on periods and tokens are released in steps * after each period ends. It can be configured with one period in which case it is like a plain TimeLock. * It also supports revocation to be used for vesting schedules. * * The contract supports receiving extra funds than the managed tokens ones that can be * withdrawn by the beneficiary at any time. * * A releaseStartTime parameter is included to override the default release schedule and * perform the first release on the configured time. After that it will continue with the * default schedule. */ abstract contract GraphTokenLock is Ownable, IGraphTokenLock { using SafeMath for uint256; using SafeERC20 for IERC20; uint256 private constant MIN_PERIOD = 1; // -- State -- IERC20 public token; address public beneficiary; // Configuration // Amount of tokens managed by the contract schedule uint256 public managedAmount; uint256 public startTime; // Start datetime (in unixtimestamp) uint256 public endTime; // Datetime after all funds are fully vested/unlocked (in unixtimestamp) uint256 public periods; // Number of vesting/release periods // First release date for tokens (in unixtimestamp) // If set, no tokens will be released before releaseStartTime ignoring // the amount to release each period uint256 public releaseStartTime; // A cliff set a date to which a beneficiary needs to get to vest // all preceding periods uint256 public vestingCliffTime; Revocability public revocable; // Whether to use vesting for locked funds // State bool public isRevoked; bool public isInitialized; uint256 public releasedAmount; // -- Events -- event TokensReleased(address indexed beneficiary, uint256 amount); event TokensWithdrawn(address indexed beneficiary, uint256 amount); event TokensRevoked(address indexed beneficiary, uint256 amount); /** * @dev Only allow calls from the beneficiary of the contract */ modifier onlyBeneficiary() { require(msg.sender == beneficiary, "!auth"); _; } /** * @notice Initializes the contract * @param _owner Address of the contract owner * @param _beneficiary Address of the beneficiary of locked tokens * @param _managedAmount Amount of tokens to be managed by the lock contract * @param _startTime Start time of the release schedule * @param _endTime End time of the release schedule * @param _periods Number of periods between start time and end time * @param _releaseStartTime Override time for when the releases start * @param _vestingCliffTime Override time for when the vesting start * @param _revocable Whether the contract is revocable */ function _initialize( address _owner, address _beneficiary, address _token, uint256 _managedAmount, uint256 _startTime, uint256 _endTime, uint256 _periods, uint256 _releaseStartTime, uint256 _vestingCliffTime, Revocability _revocable ) internal { require(!isInitialized, "Already initialized"); require(_owner != address(0), "Owner cannot be zero"); require(_beneficiary != address(0), "Beneficiary cannot be zero"); require(_token != address(0), "Token cannot be zero"); require(_managedAmount > 0, "Managed tokens cannot be zero"); require(_startTime != 0, "Start time must be set"); require(_startTime < _endTime, "Start time > end time"); require(_periods >= MIN_PERIOD, "Periods cannot be below minimum"); require(_revocable != Revocability.NotSet, "Must set a revocability option"); require(_releaseStartTime < _endTime, "Release start time must be before end time"); require(_vestingCliffTime < _endTime, "Cliff time must be before end time"); isInitialized = true; Ownable.initialize(_owner); beneficiary = _beneficiary; token = IERC20(_token); managedAmount = _managedAmount; startTime = _startTime; endTime = _endTime; periods = _periods; // Optionals releaseStartTime = _releaseStartTime; vestingCliffTime = _vestingCliffTime; revocable = _revocable; } // -- Balances -- /** * @notice Returns the amount of tokens currently held by the contract * @return Tokens held in the contract */ function currentBalance() public override view returns (uint256) { return token.balanceOf(address(this)); } // -- Time & Periods -- /** * @notice Returns the current block timestamp * @return Current block timestamp */ function currentTime() public override view returns (uint256) { return block.timestamp; } /** * @notice Gets duration of contract from start to end in seconds * @return Amount of seconds from contract startTime to endTime */ function duration() public override view returns (uint256) { return endTime.sub(startTime); } /** * @notice Gets time elapsed since the start of the contract * @dev Returns zero if called before conctract starTime * @return Seconds elapsed from contract startTime */ function sinceStartTime() public override view returns (uint256) { uint256 current = currentTime(); if (current <= startTime) { return 0; } return current.sub(startTime); } /** * @notice Returns amount available to be released after each period according to schedule * @return Amount of tokens available after each period */ function amountPerPeriod() public override view returns (uint256) { return managedAmount.div(periods); } /** * @notice Returns the duration of each period in seconds * @return Duration of each period in seconds */ function periodDuration() public override view returns (uint256) { return duration().div(periods); } /** * @notice Gets the current period based on the schedule * @return A number that represents the current period */ function currentPeriod() public override view returns (uint256) { return sinceStartTime().div(periodDuration()).add(MIN_PERIOD); } /** * @notice Gets the number of periods that passed since the first period * @return A number of periods that passed since the schedule started */ function passedPeriods() public override view returns (uint256) { return currentPeriod().sub(MIN_PERIOD); } // -- Locking & Release Schedule -- /** * @notice Gets the currently available token according to the schedule * @dev Implements the step-by-step schedule based on periods for available tokens * @return Amount of tokens available according to the schedule */ function availableAmount() public override view returns (uint256) { uint256 current = currentTime(); // Before contract start no funds are available if (current < startTime) { return 0; } // After contract ended all funds are available if (current > endTime) { return managedAmount; } // Get available amount based on period return passedPeriods().mul(amountPerPeriod()); } /** * @notice Gets the amount of currently vested tokens * @dev Similar to available amount, but is fully vested when contract is non-revocable * @return Amount of tokens already vested */ function vestedAmount() public override view returns (uint256) { // If non-revocable it is fully vested if (revocable == Revocability.Disabled) { return managedAmount; } // Vesting cliff is activated and it has not passed means nothing is vested yet if (vestingCliffTime > 0 && currentTime() < vestingCliffTime) { return 0; } return availableAmount(); } /** * @notice Gets tokens currently available for release * @dev Considers the schedule and takes into account already released tokens * @return Amount of tokens ready to be released */ function releasableAmount() public override view returns (uint256) { // If a release start time is set no tokens are available for release before this date // If not set it follows the default schedule and tokens are available on // the first period passed if (releaseStartTime > 0 && currentTime() < releaseStartTime) { return 0; } // Vesting cliff is activated and it has not passed means nothing is vested yet // so funds cannot be released if (revocable == Revocability.Enabled && vestingCliffTime > 0 && currentTime() < vestingCliffTime) { return 0; } // A beneficiary can never have more releasable tokens than the contract balance uint256 releasable = availableAmount().sub(releasedAmount); return MathUtils.min(currentBalance(), releasable); } /** * @notice Gets the outstanding amount yet to be released based on the whole contract lifetime * @dev Does not consider schedule but just global amounts tracked * @return Amount of outstanding tokens for the lifetime of the contract */ function totalOutstandingAmount() public override view returns (uint256) { return managedAmount.sub(releasedAmount); } /** * @notice Gets surplus amount in the contract based on outstanding amount to release * @dev All funds over outstanding amount is considered surplus that can be withdrawn by beneficiary * @return Amount of tokens considered as surplus */ function surplusAmount() public override view returns (uint256) { uint256 balance = currentBalance(); uint256 outstandingAmount = totalOutstandingAmount(); if (balance > outstandingAmount) { return balance.sub(outstandingAmount); } return 0; } // -- Value Transfer -- /** * @notice Releases tokens based on the configured schedule * @dev All available releasable tokens are transferred to beneficiary */ function release() external override onlyBeneficiary { uint256 amountToRelease = releasableAmount(); require(amountToRelease > 0, "No available releasable amount"); releasedAmount = releasedAmount.add(amountToRelease); token.safeTransfer(beneficiary, amountToRelease); emit TokensReleased(beneficiary, amountToRelease); } /** * @notice Withdraws surplus, unmanaged tokens from the contract * @dev Tokens in the contract over outstanding amount are considered as surplus * @param _amount Amount of tokens to withdraw */ function withdrawSurplus(uint256 _amount) external override onlyBeneficiary { require(_amount > 0, "Amount cannot be zero"); require(surplusAmount() >= _amount, "Amount requested > surplus available"); token.safeTransfer(beneficiary, _amount); emit TokensWithdrawn(beneficiary, _amount); } /** * @notice Revokes a vesting schedule and return the unvested tokens to the owner * @dev Vesting schedule is always calculated based on managed tokens */ function revoke() external override onlyOwner { require(revocable == Revocability.Enabled, "Contract is non-revocable"); require(isRevoked == false, "Already revoked"); uint256 unvestedAmount = managedAmount.sub(vestedAmount()); require(unvestedAmount > 0, "No available unvested amount"); isRevoked = true; token.safeTransfer(owner(), unvestedAmount); emit TokensRevoked(beneficiary, unvestedAmount); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.7.3; pragma experimental ABIEncoderV2; import "@openzeppelin/contracts/token/ERC20/IERC20.sol"; import "./IGraphTokenLock.sol"; interface IGraphTokenLockManager { // -- Factory -- function setMasterCopy(address _masterCopy) external; function createTokenLockWallet( address _owner, address _beneficiary, uint256 _managedAmount, uint256 _startTime, uint256 _endTime, uint256 _periods, uint256 _releaseStartTime, uint256 _vestingCliffTime, IGraphTokenLock.Revocability _revocable ) external; // -- Funds Management -- function token() external returns (IERC20); function deposit(uint256 _amount) external; function withdraw(uint256 _amount) external; // -- Allowed Funds Destinations -- function addTokenDestination(address _dst) external; function removeTokenDestination(address _dst) external; function isTokenDestination(address _dst) external view returns (bool); function getTokenDestinations() external view returns (address[] memory); // -- Function Call Authorization -- function setAuthFunctionCall(string calldata _signature, address _target) external; function unsetAuthFunctionCall(string calldata _signature) external; function setAuthFunctionCallMany(string[] calldata _signatures, address[] calldata _targets) external; function getAuthFunctionCallTarget(bytes4 _sigHash) external view returns (address); function isAuthFunctionCall(bytes4 _sigHash) external view returns (bool); }
// SPDX-License-Identifier: MIT pragma solidity ^0.7.3; /** * @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. * * The owner account will be passed on initialization of 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 { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the deployer as the initial owner. */ function initialize(address owner) internal { _owner = owner; emit OwnershipTransferred(address(0), owner); } /** * @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 == msg.sender, "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() external 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) external 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 ^0.7.3; library MathUtils { function min(uint256 a, uint256 b) internal pure returns (uint256) { return a < b ? a : b; } }
// SPDX-License-Identifier: MIT pragma solidity ^0.7.3; pragma experimental ABIEncoderV2; import "@openzeppelin/contracts/token/ERC20/IERC20.sol"; interface IGraphTokenLock { enum Revocability { NotSet, Enabled, Disabled } // -- Balances -- function currentBalance() external view returns (uint256); // -- Time & Periods -- function currentTime() external view returns (uint256); function duration() external view returns (uint256); function sinceStartTime() external view returns (uint256); function amountPerPeriod() external view returns (uint256); function periodDuration() external view returns (uint256); function currentPeriod() external view returns (uint256); function passedPeriods() external view returns (uint256); // -- Locking & Release Schedule -- function availableAmount() external view returns (uint256); function vestedAmount() external view returns (uint256); function releasableAmount() external view returns (uint256); function totalOutstandingAmount() external view returns (uint256); function surplusAmount() external view returns (uint256); // -- Value Transfer -- function release() external; function withdrawSurplus(uint256 _amount) external; function revoke() external; }
{ "optimizer": { "enabled": false, "runs": 200 }, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "abi" ] } }, "metadata": { "useLiteralContent": true }, "libraries": {} }
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Multichain Portfolio | 26 Chains
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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.