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Latest 25 from a total of 2,202 transactions
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Update Signers | 8478213 | 8 hrs ago | IN | 0 ETH | 0.00000129 | ||||
Send | 8424379 | 38 hrs ago | IN | 0 ETH | 0.00000163 | ||||
Update Signers | 8328043 | 3 days ago | IN | 0 ETH | 0.0000034 | ||||
Relay | 8197235 | 6 days ago | IN | 0 ETH | 0.00000018 | ||||
Update Signers | 8192610 | 6 days ago | IN | 0 ETH | 0.00000016 | ||||
Relay | 8112510 | 8 days ago | IN | 0 ETH | 0.00000306 | ||||
Relay | 8110635 | 8 days ago | IN | 0 ETH | 0.00000457 | ||||
Relay | 8086613 | 9 days ago | IN | 0 ETH | 0.00000558 | ||||
Relay | 8052577 | 10 days ago | IN | 0 ETH | 0.00000534 | ||||
Update Signers | 8046200 | 10 days ago | IN | 0 ETH | 0.00000337 | ||||
Relay | 7976447 | 11 days ago | IN | 0 ETH | 0.0000061 | ||||
Relay | 7958245 | 12 days ago | IN | 0 ETH | 0.00000018 | ||||
Relay | 7945003 | 12 days ago | IN | 0 ETH | 0.0000002 | ||||
Update Signers | 7916622 | 13 days ago | IN | 0 ETH | 0.00000008 | ||||
Update Signers | 7916620 | 13 days ago | IN | 0 ETH | 0.00000021 | ||||
Send | 7791112 | 16 days ago | IN | 0 ETH | 0.00000158 | ||||
Send | 7790630 | 16 days ago | IN | 0 ETH | 0.0000019 | ||||
Send | 7772393 | 16 days ago | IN | 0 ETH | 0.00000367 | ||||
Update Signers | 7743815 | 17 days ago | IN | 0 ETH | 0.00000411 | ||||
Update Signers | 7614107 | 20 days ago | IN | 0 ETH | 0.00000216 | ||||
Relay | 7593780 | 20 days ago | IN | 0 ETH | 0.00000218 | ||||
Relay | 7508134 | 22 days ago | IN | 0 ETH | 0.00000043 | ||||
Update Signers | 7483841 | 23 days ago | IN | 0 ETH | 0.00000047 | ||||
Relay | 7478082 | 23 days ago | IN | 0 ETH | 0.00000041 | ||||
Relay | 7475849 | 23 days ago | IN | 0 ETH | 0.00000091 |
Latest 25 internal transactions (View All)
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5849217 | 61 days ago | 0.37086291 ETH | ||||
5849217 | 61 days ago | 0.37086291 ETH | ||||
5849106 | 61 days ago | 0.38593584 ETH | ||||
5849106 | 61 days ago | 0.38593584 ETH | ||||
5849089 | 61 days ago | 0.38450091 ETH | ||||
5849089 | 61 days ago | 0.38450091 ETH | ||||
5849059 | 61 days ago | 0.38835 ETH | ||||
5849059 | 61 days ago | 0.38835 ETH | ||||
4992038 | 81 days ago | 0.00908108 ETH | ||||
4992038 | 81 days ago | 0.00908108 ETH | ||||
4992038 | 81 days ago | 0.00908108 ETH | ||||
4992038 | 81 days ago | 0.00908108 ETH | ||||
4954578 | 81 days ago | 80 ETH | ||||
4954573 | 81 days ago | 0.82792313 ETH | ||||
4954573 | 81 days ago | 0.82792313 ETH | ||||
4954532 | 81 days ago | 0.55 ETH | ||||
4954532 | 81 days ago | 0.55 ETH | ||||
4954512 | 81 days ago | 0.2 ETH | ||||
4954512 | 81 days ago | 0.2 ETH | ||||
4954397 | 81 days ago | 81.3409 ETH | ||||
4954397 | 81 days ago | 81.3409 ETH | ||||
4953982 | 81 days ago | 0.21 ETH | ||||
4953982 | 81 days ago | 0.21 ETH | ||||
4953981 | 81 days ago | 0.05744066 ETH | ||||
4953981 | 81 days ago | 0.05744066 ETH |
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Contract Name:
Bridge
Compiler Version
v0.8.17+commit.8df45f5f
Optimization Enabled:
Yes with 800 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: GPL-3.0-only pragma solidity 0.8.17; import "@openzeppelin/contracts/token/ERC20/IERC20.sol"; import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol"; import "../libraries/PbBridge.sol"; import "./Pool.sol"; interface IBlastPoints { function configurePointsOperator(address operator) external; function configurePointsOperatorOnBehalf(address contractAddress, address operator) external; } /** * @title The liquidity-pool based bridge. */ contract Bridge is Pool { using SafeERC20 for IERC20; // liquidity events event Send( bytes32 transferId, address sender, address receiver, address token, uint256 amount, uint64 dstChainId, uint64 nonce, uint32 maxSlippage ); event Relay( bytes32 transferId, address sender, address receiver, address token, uint256 amount, uint64 srcChainId, bytes32 srcTransferId ); // gov events event MinSendUpdated(address token, uint256 amount); event MaxSendUpdated(address token, uint256 amount); mapping(bytes32 => bool) public transfers; mapping(address => uint256) public minSend; // send _amount must > minSend mapping(address => uint256) public maxSend; // min allowed max slippage uint32 value is slippage * 1M, eg. 0.5% -> 5000 uint32 public minimalMaxSlippage; constructor(address _blastPointsAddress, address _pointsOperator) { IBlastPoints(_blastPointsAddress).configurePointsOperator(_pointsOperator); } /** * @notice Send a cross-chain transfer via the liquidity pool-based bridge. * NOTE: This function DOES NOT SUPPORT fee-on-transfer / rebasing tokens. * @param _receiver The address of the receiver. * @param _token The address of the token. * @param _amount The amount of the transfer. * @param _dstChainId The destination chain ID. * @param _nonce A number input to guarantee uniqueness of transferId. Can be timestamp in practice. * @param _maxSlippage The max slippage accepted, given as percentage in point (pip). Eg. 5000 means 0.5%. * Must be greater than minimalMaxSlippage. Receiver is guaranteed to receive at least (100% - max slippage percentage) * amount or the * transfer can be refunded. */ function send( address _receiver, address _token, uint256 _amount, uint64 _dstChainId, uint64 _nonce, uint32 _maxSlippage // slippage * 1M, eg. 0.5% -> 5000 ) external nonReentrant whenNotPaused { bytes32 transferId = _send(_receiver, _token, _amount, _dstChainId, _nonce, _maxSlippage); IERC20(_token).safeTransferFrom(msg.sender, address(this), _amount); emit Send(transferId, msg.sender, _receiver, _token, _amount, _dstChainId, _nonce, _maxSlippage); } /** * @notice Send a cross-chain transfer via the liquidity pool-based bridge using the native token. * @param _receiver The address of the receiver. * @param _amount The amount of the transfer. * @param _dstChainId The destination chain ID. * @param _nonce A unique number. Can be timestamp in practice. * @param _maxSlippage The max slippage accepted, given as percentage in point (pip). Eg. 5000 means 0.5%. * Must be greater than minimalMaxSlippage. Receiver is guaranteed to receive at least (100% - max slippage percentage) * amount or the * transfer can be refunded. */ function sendNative( address _receiver, uint256 _amount, uint64 _dstChainId, uint64 _nonce, uint32 _maxSlippage ) external payable nonReentrant whenNotPaused { require(msg.value == _amount, "Amount mismatch"); require(nativeWrap != address(0), "Native wrap not set"); bytes32 transferId = _send(_receiver, nativeWrap, _amount, _dstChainId, _nonce, _maxSlippage); IWETH(nativeWrap).deposit{value: _amount}(); emit Send(transferId, msg.sender, _receiver, nativeWrap, _amount, _dstChainId, _nonce, _maxSlippage); } function _send( address _receiver, address _token, uint256 _amount, uint64 _dstChainId, uint64 _nonce, uint32 _maxSlippage ) private returns (bytes32) { require(_amount > minSend[_token], "amount too small"); require(maxSend[_token] == 0 || _amount <= maxSend[_token], "amount too large"); require(_maxSlippage > minimalMaxSlippage, "max slippage too small"); bytes32 transferId = keccak256( // uint64(block.chainid) for consistency as entire system uses uint64 for chain id // len = 20 + 20 + 20 + 32 + 8 + 8 + 8 = 116 abi.encodePacked(msg.sender, _receiver, _token, _amount, _dstChainId, _nonce, uint64(block.chainid)) ); require(transfers[transferId] == false, "transfer exists"); transfers[transferId] = true; return transferId; } /** * @notice Relay a cross-chain transfer sent from a liquidity pool-based bridge on another chain. * @param _relayRequest The serialized Relay protobuf. * @param _sigs The list of signatures sorted by signing addresses in ascending order. A relay must be signed-off by * +2/3 of the bridge's current signing power to be delivered. * @param _signers The sorted list of signers. * @param _powers The signing powers of the signers. */ function relay( bytes calldata _relayRequest, bytes[] calldata _sigs, address[] calldata _signers, uint256[] calldata _powers ) external whenNotPaused { bytes32 domain = keccak256(abi.encodePacked(block.chainid, address(this), "Relay")); verifySigs(abi.encodePacked(domain, _relayRequest), _sigs, _signers, _powers); PbBridge.Relay memory request = PbBridge.decRelay(_relayRequest); // len = 20 + 20 + 20 + 32 + 8 + 8 + 32 = 140 bytes32 transferId = keccak256( abi.encodePacked( request.sender, request.receiver, request.token, request.amount, request.srcChainId, request.dstChainId, request.srcTransferId ) ); require(transfers[transferId] == false, "transfer exists"); transfers[transferId] = true; _updateVolume(request.token, request.amount); uint256 delayThreshold = delayThresholds[request.token]; if (delayThreshold > 0 && request.amount > delayThreshold) { _addDelayedTransfer(transferId, request.receiver, request.token, request.amount); } else { _sendToken(request.receiver, request.token, request.amount); } emit Relay( transferId, request.sender, request.receiver, request.token, request.amount, request.srcChainId, request.srcTransferId ); } function setMinSend(address[] calldata _tokens, uint256[] calldata _amounts) external onlyGovernor { require(_tokens.length == _amounts.length, "length mismatch"); for (uint256 i = 0; i < _tokens.length; i++) { minSend[_tokens[i]] = _amounts[i]; emit MinSendUpdated(_tokens[i], _amounts[i]); } } function setMaxSend(address[] calldata _tokens, uint256[] calldata _amounts) external onlyGovernor { require(_tokens.length == _amounts.length, "length mismatch"); for (uint256 i = 0; i < _tokens.length; i++) { maxSend[_tokens[i]] = _amounts[i]; emit MaxSendUpdated(_tokens[i], _amounts[i]); } } function setMinimalMaxSlippage(uint32 _minimalMaxSlippage) external onlyGovernor { minimalMaxSlippage = _minimalMaxSlippage; } // This is needed to receive ETH when calling `IWETH.withdraw` receive() external payable {} }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (security/Pausable.sol) pragma solidity ^0.8.0; import "../utils/Context.sol"; /** * @dev Contract module which allows children to implement an emergency stop * mechanism that can be triggered by an authorized account. * * This module is used through inheritance. It will make available the * modifiers `whenNotPaused` and `whenPaused`, which can be applied to * the functions of your contract. Note that they will not be pausable by * simply including this module, only once the modifiers are put in place. */ abstract contract Pausable is Context { /** * @dev Emitted when the pause is triggered by `account`. */ event Paused(address account); /** * @dev Emitted when the pause is lifted by `account`. */ event Unpaused(address account); bool private _paused; /** * @dev Initializes the contract in unpaused state. */ constructor() { _paused = false; } /** * @dev Returns true if the contract is paused, and false otherwise. */ function paused() public view virtual returns (bool) { return _paused; } /** * @dev Modifier to make a function callable only when the contract is not paused. * * Requirements: * * - The contract must not be paused. */ modifier whenNotPaused() { require(!paused(), "Pausable: paused"); _; } /** * @dev Modifier to make a function callable only when the contract is paused. * * Requirements: * * - The contract must be paused. */ modifier whenPaused() { require(paused(), "Pausable: not paused"); _; } /** * @dev Triggers stopped state. * * Requirements: * * - The contract must not be paused. */ function _pause() internal virtual whenNotPaused { _paused = true; emit Paused(_msgSender()); } /** * @dev Returns to normal state. * * Requirements: * * - The contract must be paused. */ function _unpause() internal virtual whenPaused { _paused = false; emit Unpaused(_msgSender()); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (security/ReentrancyGuard.sol) pragma solidity ^0.8.0; /** * @dev Contract module that helps prevent reentrant calls to a function. * * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier * available, which can be applied to functions to make sure there are no nested * (reentrant) calls to them. * * Note that because there is a single `nonReentrant` guard, functions marked as * `nonReentrant` may not call one another. This can be worked around by making * those functions `private`, and then adding `external` `nonReentrant` entry * points to them. * * TIP: If you would like to learn more about reentrancy and alternative ways * to protect against it, check out our blog post * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul]. */ abstract contract ReentrancyGuard { // Booleans are more expensive than uint256 or any type that takes up a full // word because each write operation emits an extra SLOAD to first read the // slot's contents, replace the bits taken up by the boolean, and then write // back. This is the compiler's defense against contract upgrades and // pointer aliasing, and it cannot be disabled. // The values being non-zero value makes deployment a bit more expensive, // but in exchange the refund on every call to nonReentrant will be lower in // amount. Since refunds are capped to a percentage of the total // transaction's gas, it is best to keep them low in cases like this one, to // increase the likelihood of the full refund coming into effect. uint256 private constant _NOT_ENTERED = 1; uint256 private constant _ENTERED = 2; uint256 private _status; constructor() { _status = _NOT_ENTERED; } /** * @dev Prevents a contract from calling itself, directly or indirectly. * Calling a `nonReentrant` function from another `nonReentrant` * function is not supported. It is possible to prevent this from happening * by making the `nonReentrant` function external, and making it call a * `private` function that does the actual work. */ modifier nonReentrant() { // On the first call to nonReentrant, _notEntered will be true require(_status != _ENTERED, "ReentrancyGuard: reentrant call"); // Any calls to nonReentrant after this point will fail _status = _ENTERED; _; // By storing the original value once again, a refund is triggered (see // https://eips.ethereum.org/EIPS/eip-2200) _status = _NOT_ENTERED; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.5.0) (token/ERC20/IERC20.sol) pragma solidity ^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 `to`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address to, 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 `from` to `to` 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 from, address to, 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 // OpenZeppelin Contracts v4.4.1 (token/ERC20/utils/SafeERC20.sol) pragma solidity ^0.8.0; import "../IERC20.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 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' 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) + value; _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } function safeDecreaseAllowance( IERC20 token, address spender, uint256 value ) internal { unchecked { uint256 oldAllowance = token.allowance(address(this), spender); require(oldAllowance >= value, "SafeERC20: decreased allowance below zero"); uint256 newAllowance = oldAllowance - value; _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 require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed"); } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.5.0) (utils/Address.sol) pragma solidity ^0.8.1; /** * @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 * ==== * * [IMPORTANT] * ==== * You shouldn't rely on `isContract` to protect against flash loan attacks! * * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract * constructor. * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize/address.code.length, which returns 0 // for contracts in construction, since the code is only stored at the end // of the constructor execution. return account.code.length > 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"); (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"); (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"); (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { require(isContract(target), "Address: delegate call to non-contract"); (bool success, bytes memory returndata) = target.delegatecall(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the * revert reason using the provided one. * * _Available since v4.3._ */ function verifyCallResult( bool success, bytes memory returndata, string memory errorMessage ) internal 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 assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/Context.sol) pragma solidity ^0.8.0; /** * @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 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) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.5.0) (utils/cryptography/ECDSA.sol) pragma solidity ^0.8.0; import "../Strings.sol"; /** * @dev Elliptic Curve Digital Signature Algorithm (ECDSA) operations. * * These functions can be used to verify that a message was signed by the holder * of the private keys of a given address. */ library ECDSA { enum RecoverError { NoError, InvalidSignature, InvalidSignatureLength, InvalidSignatureS, InvalidSignatureV } function _throwError(RecoverError error) private pure { if (error == RecoverError.NoError) { return; // no error: do nothing } else if (error == RecoverError.InvalidSignature) { revert("ECDSA: invalid signature"); } else if (error == RecoverError.InvalidSignatureLength) { revert("ECDSA: invalid signature length"); } else if (error == RecoverError.InvalidSignatureS) { revert("ECDSA: invalid signature 's' value"); } else if (error == RecoverError.InvalidSignatureV) { revert("ECDSA: invalid signature 'v' value"); } } /** * @dev Returns the address that signed a hashed message (`hash`) with * `signature` or error string. This address can then be used for verification purposes. * * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures: * this function rejects them by requiring the `s` value to be in the lower * half order, and the `v` value to be either 27 or 28. * * IMPORTANT: `hash` _must_ be the result of a hash operation for the * verification to be secure: it is possible to craft signatures that * recover to arbitrary addresses for non-hashed data. A safe way to ensure * this is by receiving a hash of the original message (which may otherwise * be too long), and then calling {toEthSignedMessageHash} on it. * * Documentation for signature generation: * - with https://web3js.readthedocs.io/en/v1.3.4/web3-eth-accounts.html#sign[Web3.js] * - with https://docs.ethers.io/v5/api/signer/#Signer-signMessage[ethers] * * _Available since v4.3._ */ function tryRecover(bytes32 hash, bytes memory signature) internal pure returns (address, RecoverError) { // Check the signature length // - case 65: r,s,v signature (standard) // - case 64: r,vs signature (cf https://eips.ethereum.org/EIPS/eip-2098) _Available since v4.1._ if (signature.length == 65) { bytes32 r; bytes32 s; uint8 v; // ecrecover takes the signature parameters, and the only way to get them // currently is to use assembly. assembly { r := mload(add(signature, 0x20)) s := mload(add(signature, 0x40)) v := byte(0, mload(add(signature, 0x60))) } return tryRecover(hash, v, r, s); } else if (signature.length == 64) { bytes32 r; bytes32 vs; // ecrecover takes the signature parameters, and the only way to get them // currently is to use assembly. assembly { r := mload(add(signature, 0x20)) vs := mload(add(signature, 0x40)) } return tryRecover(hash, r, vs); } else { return (address(0), RecoverError.InvalidSignatureLength); } } /** * @dev Returns the address that signed a hashed message (`hash`) with * `signature`. This address can then be used for verification purposes. * * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures: * this function rejects them by requiring the `s` value to be in the lower * half order, and the `v` value to be either 27 or 28. * * IMPORTANT: `hash` _must_ be the result of a hash operation for the * verification to be secure: it is possible to craft signatures that * recover to arbitrary addresses for non-hashed data. A safe way to ensure * this is by receiving a hash of the original message (which may otherwise * be too long), and then calling {toEthSignedMessageHash} on it. */ function recover(bytes32 hash, bytes memory signature) internal pure returns (address) { (address recovered, RecoverError error) = tryRecover(hash, signature); _throwError(error); return recovered; } /** * @dev Overload of {ECDSA-tryRecover} that receives the `r` and `vs` short-signature fields separately. * * See https://eips.ethereum.org/EIPS/eip-2098[EIP-2098 short signatures] * * _Available since v4.3._ */ function tryRecover( bytes32 hash, bytes32 r, bytes32 vs ) internal pure returns (address, RecoverError) { bytes32 s = vs & bytes32(0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff); uint8 v = uint8((uint256(vs) >> 255) + 27); return tryRecover(hash, v, r, s); } /** * @dev Overload of {ECDSA-recover} that receives the `r and `vs` short-signature fields separately. * * _Available since v4.2._ */ function recover( bytes32 hash, bytes32 r, bytes32 vs ) internal pure returns (address) { (address recovered, RecoverError error) = tryRecover(hash, r, vs); _throwError(error); return recovered; } /** * @dev Overload of {ECDSA-tryRecover} that receives the `v`, * `r` and `s` signature fields separately. * * _Available since v4.3._ */ function tryRecover( bytes32 hash, uint8 v, bytes32 r, bytes32 s ) internal pure returns (address, RecoverError) { // EIP-2 still allows signature malleability for ecrecover(). Remove this possibility and make the signature // unique. Appendix F in the Ethereum Yellow paper (https://ethereum.github.io/yellowpaper/paper.pdf), defines // the valid range for s in (301): 0 < s < secp256k1n ÷ 2 + 1, and for v in (302): v ∈ {27, 28}. Most // signatures from current libraries generate a unique signature with an s-value in the lower half order. // // If your library generates malleable signatures, such as s-values in the upper range, calculate a new s-value // with 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 - s1 and flip v from 27 to 28 or // vice versa. If your library also generates signatures with 0/1 for v instead 27/28, add 27 to v to accept // these malleable signatures as well. if (uint256(s) > 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0) { return (address(0), RecoverError.InvalidSignatureS); } if (v != 27 && v != 28) { return (address(0), RecoverError.InvalidSignatureV); } // If the signature is valid (and not malleable), return the signer address address signer = ecrecover(hash, v, r, s); if (signer == address(0)) { return (address(0), RecoverError.InvalidSignature); } return (signer, RecoverError.NoError); } /** * @dev Overload of {ECDSA-recover} that receives the `v`, * `r` and `s` signature fields separately. */ function recover( bytes32 hash, uint8 v, bytes32 r, bytes32 s ) internal pure returns (address) { (address recovered, RecoverError error) = tryRecover(hash, v, r, s); _throwError(error); return recovered; } /** * @dev Returns an Ethereum Signed Message, created from a `hash`. This * produces hash corresponding to the one signed with the * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`] * JSON-RPC method as part of EIP-191. * * See {recover}. */ function toEthSignedMessageHash(bytes32 hash) internal pure returns (bytes32) { // 32 is the length in bytes of hash, // enforced by the type signature above return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n32", hash)); } /** * @dev Returns an Ethereum Signed Message, created from `s`. This * produces hash corresponding to the one signed with the * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`] * JSON-RPC method as part of EIP-191. * * See {recover}. */ function toEthSignedMessageHash(bytes memory s) internal pure returns (bytes32) { return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n", Strings.toString(s.length), s)); } /** * @dev Returns an Ethereum Signed Typed Data, created from a * `domainSeparator` and a `structHash`. This produces hash corresponding * to the one signed with the * https://eips.ethereum.org/EIPS/eip-712[`eth_signTypedData`] * JSON-RPC method as part of EIP-712. * * See {recover}. */ function toTypedDataHash(bytes32 domainSeparator, bytes32 structHash) internal pure returns (bytes32) { return keccak256(abi.encodePacked("\x19\x01", domainSeparator, structHash)); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/Strings.sol) pragma solidity ^0.8.0; /** * @dev String operations. */ library Strings { bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef"; /** * @dev Converts a `uint256` to its ASCII `string` decimal representation. */ function toString(uint256 value) internal pure returns (string memory) { // Inspired by OraclizeAPI's implementation - MIT licence // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol if (value == 0) { return "0"; } uint256 temp = value; uint256 digits; while (temp != 0) { digits++; temp /= 10; } bytes memory buffer = new bytes(digits); while (value != 0) { digits -= 1; buffer[digits] = bytes1(uint8(48 + uint256(value % 10))); value /= 10; } return string(buffer); } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation. */ function toHexString(uint256 value) internal pure returns (string memory) { if (value == 0) { return "0x00"; } uint256 temp = value; uint256 length = 0; while (temp != 0) { length++; temp >>= 8; } return toHexString(value, length); } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length. */ function toHexString(uint256 value, uint256 length) internal pure returns (string memory) { bytes memory buffer = new bytes(2 * length + 2); buffer[0] = "0"; buffer[1] = "x"; for (uint256 i = 2 * length + 1; i > 1; --i) { buffer[i] = _HEX_SYMBOLS[value & 0xf]; value >>= 4; } require(value == 0, "Strings: hex length insufficient"); return string(buffer); } }
// SPDX-License-Identifier: GPL-3.0-only pragma solidity >=0.8.0; interface ISigsVerifier { /** * @notice Verifies that a message is signed by a quorum among the signers. * @param _msg signed message * @param _sigs list of signatures sorted by signer addresses in ascending order * @param _signers sorted list of current signers * @param _powers powers of current signers */ function verifySigs( bytes memory _msg, bytes[] calldata _sigs, address[] calldata _signers, uint256[] calldata _powers ) external view; }
// SPDX-License-Identifier: GPL-3.0-only pragma solidity >=0.8.0; interface IWETH { function deposit() external payable; function withdraw(uint256) external; }
// SPDX-License-Identifier: GPL-3.0-only pragma solidity 0.8.17; // runtime proto sol library library Pb { enum WireType { Varint, Fixed64, LengthDelim, StartGroup, EndGroup, Fixed32 } struct Buffer { uint256 idx; // the start index of next read. when idx=b.length, we're done bytes b; // hold serialized proto msg, readonly } // create a new in-memory Buffer object from raw msg bytes function fromBytes(bytes memory raw) internal pure returns (Buffer memory buf) { buf.b = raw; buf.idx = 0; } // whether there are unread bytes function hasMore(Buffer memory buf) internal pure returns (bool) { return buf.idx < buf.b.length; } // decode current field number and wiretype function decKey(Buffer memory buf) internal pure returns (uint256 tag, WireType wiretype) { uint256 v = decVarint(buf); tag = v / 8; wiretype = WireType(v & 7); } // count tag occurrences, return an array due to no memory map support // have to create array for (maxtag+1) size. cnts[tag] = occurrences // should keep buf.idx unchanged because this is only a count function function cntTags(Buffer memory buf, uint256 maxtag) internal pure returns (uint256[] memory cnts) { uint256 originalIdx = buf.idx; cnts = new uint256[](maxtag + 1); // protobuf's tags are from 1 rather than 0 uint256 tag; WireType wire; while (hasMore(buf)) { (tag, wire) = decKey(buf); cnts[tag] += 1; skipValue(buf, wire); } buf.idx = originalIdx; } // read varint from current buf idx, move buf.idx to next read, return the int value function decVarint(Buffer memory buf) internal pure returns (uint256 v) { bytes10 tmp; // proto int is at most 10 bytes (7 bits can be used per byte) bytes memory bb = buf.b; // get buf.b mem addr to use in assembly v = buf.idx; // use v to save one additional uint variable assembly { tmp := mload(add(add(bb, 32), v)) // load 10 bytes from buf.b[buf.idx] to tmp } uint256 b; // store current byte content v = 0; // reset to 0 for return value for (uint256 i = 0; i < 10; i++) { assembly { b := byte(i, tmp) // don't use tmp[i] because it does bound check and costs extra } v |= (b & 0x7F) << (i * 7); if (b & 0x80 == 0) { buf.idx += i + 1; return v; } } revert(); // i=10, invalid varint stream } // read length delimited field and return bytes function decBytes(Buffer memory buf) internal pure returns (bytes memory b) { uint256 len = decVarint(buf); uint256 end = buf.idx + len; require(end <= buf.b.length); // avoid overflow b = new bytes(len); bytes memory bufB = buf.b; // get buf.b mem addr to use in assembly uint256 bStart; uint256 bufBStart = buf.idx; assembly { bStart := add(b, 32) bufBStart := add(add(bufB, 32), bufBStart) } for (uint256 i = 0; i < len; i += 32) { assembly { mstore(add(bStart, i), mload(add(bufBStart, i))) } } buf.idx = end; } // return packed ints function decPacked(Buffer memory buf) internal pure returns (uint256[] memory t) { uint256 len = decVarint(buf); uint256 end = buf.idx + len; require(end <= buf.b.length); // avoid overflow // array in memory must be init w/ known length // so we have to create a tmp array w/ max possible len first uint256[] memory tmp = new uint256[](len); uint256 i = 0; // count how many ints are there while (buf.idx < end) { tmp[i] = decVarint(buf); i++; } t = new uint256[](i); // init t with correct length for (uint256 j = 0; j < i; j++) { t[j] = tmp[j]; } return t; } // move idx pass current value field, to beginning of next tag or msg end function skipValue(Buffer memory buf, WireType wire) internal pure { if (wire == WireType.Varint) { decVarint(buf); } else if (wire == WireType.LengthDelim) { uint256 len = decVarint(buf); buf.idx += len; // skip len bytes value data require(buf.idx <= buf.b.length); // avoid overflow } else { revert(); } // unsupported wiretype } // type conversion help utils function _bool(uint256 x) internal pure returns (bool v) { return x != 0; } function _uint256(bytes memory b) internal pure returns (uint256 v) { require(b.length <= 32); // b's length must be smaller than or equal to 32 assembly { v := mload(add(b, 32)) } // load all 32bytes to v v = v >> (8 * (32 - b.length)); // only first b.length is valid } function _address(bytes memory b) internal pure returns (address v) { v = _addressPayable(b); } function _addressPayable(bytes memory b) internal pure returns (address payable v) { require(b.length == 20); //load 32bytes then shift right 12 bytes assembly { v := div(mload(add(b, 32)), 0x1000000000000000000000000) } } function _bytes32(bytes memory b) internal pure returns (bytes32 v) { require(b.length == 32); assembly { v := mload(add(b, 32)) } } // uint[] to uint8[] function uint8s(uint256[] memory arr) internal pure returns (uint8[] memory t) { t = new uint8[](arr.length); for (uint256 i = 0; i < t.length; i++) { t[i] = uint8(arr[i]); } } function uint32s(uint256[] memory arr) internal pure returns (uint32[] memory t) { t = new uint32[](arr.length); for (uint256 i = 0; i < t.length; i++) { t[i] = uint32(arr[i]); } } function uint64s(uint256[] memory arr) internal pure returns (uint64[] memory t) { t = new uint64[](arr.length); for (uint256 i = 0; i < t.length; i++) { t[i] = uint64(arr[i]); } } function bools(uint256[] memory arr) internal pure returns (bool[] memory t) { t = new bool[](arr.length); for (uint256 i = 0; i < t.length; i++) { t[i] = arr[i] != 0; } } }
// SPDX-License-Identifier: GPL-3.0-only // Code generated by protoc-gen-sol. DO NOT EDIT. // source: bridge.proto pragma solidity 0.8.17; import "./Pb.sol"; library PbBridge { using Pb for Pb.Buffer; // so we can call Pb funcs on Buffer obj struct Relay { address sender; // tag: 1 address receiver; // tag: 2 address token; // tag: 3 uint256 amount; // tag: 4 uint64 srcChainId; // tag: 5 uint64 dstChainId; // tag: 6 bytes32 srcTransferId; // tag: 7 } // end struct Relay function decRelay(bytes memory raw) internal pure returns (Relay memory m) { Pb.Buffer memory buf = Pb.fromBytes(raw); uint256 tag; Pb.WireType wire; while (buf.hasMore()) { (tag, wire) = buf.decKey(); if (false) {} // solidity has no switch/case else if (tag == 1) { m.sender = Pb._address(buf.decBytes()); } else if (tag == 2) { m.receiver = Pb._address(buf.decBytes()); } else if (tag == 3) { m.token = Pb._address(buf.decBytes()); } else if (tag == 4) { m.amount = Pb._uint256(buf.decBytes()); } else if (tag == 5) { m.srcChainId = uint64(buf.decVarint()); } else if (tag == 6) { m.dstChainId = uint64(buf.decVarint()); } else if (tag == 7) { m.srcTransferId = Pb._bytes32(buf.decBytes()); } else { buf.skipValue(wire); } // skip value of unknown tag } } // end decoder Relay }
// SPDX-License-Identifier: GPL-3.0-only // Code generated by protoc-gen-sol. DO NOT EDIT. // source: contracts/libraries/proto/pool.proto pragma solidity 0.8.17; import "./Pb.sol"; library PbPool { using Pb for Pb.Buffer; // so we can call Pb funcs on Buffer obj struct WithdrawMsg { uint64 chainid; // tag: 1 uint64 seqnum; // tag: 2 address receiver; // tag: 3 address token; // tag: 4 uint256 amount; // tag: 5 bytes32 refid; // tag: 6 } // end struct WithdrawMsg function decWithdrawMsg(bytes memory raw) internal pure returns (WithdrawMsg memory m) { Pb.Buffer memory buf = Pb.fromBytes(raw); uint256 tag; Pb.WireType wire; while (buf.hasMore()) { (tag, wire) = buf.decKey(); if (false) {} // solidity has no switch/case else if (tag == 1) { m.chainid = uint64(buf.decVarint()); } else if (tag == 2) { m.seqnum = uint64(buf.decVarint()); } else if (tag == 3) { m.receiver = Pb._address(buf.decBytes()); } else if (tag == 4) { m.token = Pb._address(buf.decBytes()); } else if (tag == 5) { m.amount = Pb._uint256(buf.decBytes()); } else if (tag == 6) { m.refid = Pb._bytes32(buf.decBytes()); } else { buf.skipValue(wire); } // skip value of unknown tag } } // end decoder WithdrawMsg }
// SPDX-License-Identifier: GPL-3.0-only pragma solidity 0.8.17; import "@openzeppelin/contracts/token/ERC20/IERC20.sol"; import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol"; import "@openzeppelin/contracts/security/ReentrancyGuard.sol"; import "../interfaces/IWETH.sol"; import "../libraries/PbPool.sol"; import "../safeguard/Pauser.sol"; import "../safeguard/VolumeControl.sol"; import "../safeguard/DelayedTransfer.sol"; import "./Signers.sol"; /** * @title Liquidity pool functions for {Bridge}. */ contract Pool is Signers, ReentrancyGuard, Pauser, VolumeControl, DelayedTransfer { using SafeERC20 for IERC20; uint64 public addseq; // ensure unique LiquidityAdded event, start from 1 mapping(address => uint256) public minAdd; // add _amount must > minAdd // map of successful withdraws, if true means already withdrew money or added to delayedTransfers mapping(bytes32 => bool) public withdraws; // erc20 wrap of gas token of this chain, eg. WETH, when relay ie. pay out, // if request.token equals this, will withdraw and send native token to receiver // note we don't check whether it's zero address. when this isn't set, and request.token // is all 0 address, guarantee fail address public nativeWrap; // when transfer native token after wrap, use this gas used config. uint256 public nativeTokenTransferGas = 50000; // liquidity events event LiquidityAdded( uint64 seqnum, address provider, address token, uint256 amount // how many tokens were added ); event WithdrawDone( bytes32 withdrawId, uint64 seqnum, address receiver, address token, uint256 amount, bytes32 refid ); event MinAddUpdated(address token, uint256 amount); /** * @notice Add liquidity to the pool-based bridge. * NOTE: This function DOES NOT SUPPORT fee-on-transfer / rebasing tokens. * @param _token The address of the token. * @param _amount The amount to add. */ function addLiquidity(address _token, uint256 _amount) external nonReentrant whenNotPaused { require(_amount > minAdd[_token], "amount too small"); addseq += 1; IERC20(_token).safeTransferFrom(msg.sender, address(this), _amount); emit LiquidityAdded(addseq, msg.sender, _token, _amount); } /** * @notice Add native token liquidity to the pool-based bridge. * @param _amount The amount to add. */ function addNativeLiquidity(uint256 _amount) external payable nonReentrant whenNotPaused { require(msg.value == _amount, "Amount mismatch"); require(nativeWrap != address(0), "Native wrap not set"); require(_amount > minAdd[nativeWrap], "amount too small"); addseq += 1; IWETH(nativeWrap).deposit{value: _amount}(); emit LiquidityAdded(addseq, msg.sender, nativeWrap, _amount); } /** * @notice Withdraw funds from the bridge pool. * @param _wdmsg The serialized Withdraw protobuf. * @param _sigs The list of signatures sorted by signing addresses in ascending order. A withdrawal must be * signed-off by +2/3 of the bridge's current signing power to be delivered. * @param _signers The sorted list of signers. * @param _powers The signing powers of the signers. */ function withdraw( bytes calldata _wdmsg, bytes[] calldata _sigs, address[] calldata _signers, uint256[] calldata _powers ) external whenNotPaused { bytes32 domain = keccak256(abi.encodePacked(block.chainid, address(this), "WithdrawMsg")); verifySigs(abi.encodePacked(domain, _wdmsg), _sigs, _signers, _powers); // decode and check wdmsg PbPool.WithdrawMsg memory wdmsg = PbPool.decWithdrawMsg(_wdmsg); // len = 8 + 8 + 20 + 20 + 32 = 88 bytes32 wdId = keccak256( abi.encodePacked(wdmsg.chainid, wdmsg.seqnum, wdmsg.receiver, wdmsg.token, wdmsg.amount) ); require(withdraws[wdId] == false, "withdraw already succeeded"); withdraws[wdId] = true; _updateVolume(wdmsg.token, wdmsg.amount); uint256 delayThreshold = delayThresholds[wdmsg.token]; if (delayThreshold > 0 && wdmsg.amount > delayThreshold) { _addDelayedTransfer(wdId, wdmsg.receiver, wdmsg.token, wdmsg.amount); } else { _sendToken(wdmsg.receiver, wdmsg.token, wdmsg.amount); } emit WithdrawDone(wdId, wdmsg.seqnum, wdmsg.receiver, wdmsg.token, wdmsg.amount, wdmsg.refid); } function executeDelayedTransfer(bytes32 id) external whenNotPaused { delayedTransfer memory transfer = _executeDelayedTransfer(id); _sendToken(transfer.receiver, transfer.token, transfer.amount); } function setMinAdd(address[] calldata _tokens, uint256[] calldata _amounts) external onlyGovernor { require(_tokens.length == _amounts.length, "length mismatch"); for (uint256 i = 0; i < _tokens.length; i++) { minAdd[_tokens[i]] = _amounts[i]; emit MinAddUpdated(_tokens[i], _amounts[i]); } } function _sendToken( address _receiver, address _token, uint256 _amount ) internal { if (_token == nativeWrap) { // withdraw then transfer native to receiver IWETH(nativeWrap).withdraw(_amount); (bool sent, ) = _receiver.call{value: _amount, gas: nativeTokenTransferGas}(""); require(sent, "failed to send native token"); } else { IERC20(_token).safeTransfer(_receiver, _amount); } } // set nativeWrap, for relay requests, if token == nativeWrap, will withdraw first then transfer native to receiver function setWrap(address _weth) external onlyOwner { nativeWrap = _weth; } // setNativeTransferGasUsed, native transfer will use this config. function setNativeTokenTransferGas(uint256 _gasUsed) external onlyGovernor { nativeTokenTransferGas = _gasUsed; } }
// SPDX-License-Identifier: GPL-3.0-only pragma solidity 0.8.17; import "@openzeppelin/contracts/utils/cryptography/ECDSA.sol"; import "../safeguard/Ownable.sol"; import "../interfaces/ISigsVerifier.sol"; /** * @title Multi-sig verification and management functions for {Bridge}. */ contract Signers is Ownable, ISigsVerifier { using ECDSA for bytes32; bytes32 public ssHash; uint256 public triggerTime; // timestamp when last update was triggered // reset can be called by the owner address for emergency recovery uint256 public resetTime; uint256 public noticePeriod; // advance notice period as seconds for reset uint256 constant MAX_INT = 2**256 - 1; event SignersUpdated(address[] _signers, uint256[] _powers); event ResetNotification(uint256 resetTime); /** * @notice Verifies that a message is signed by a quorum among the signers * The sigs must be sorted by signer addresses in ascending order. * @param _msg signed message * @param _sigs list of signatures sorted by signer addresses in ascending order * @param _signers sorted list of current signers * @param _powers powers of current signers */ function verifySigs( bytes memory _msg, bytes[] calldata _sigs, address[] calldata _signers, uint256[] calldata _powers ) public view override { bytes32 h = keccak256(abi.encodePacked(_signers, _powers)); require(ssHash == h, "Mismatch current signers"); _verifySignedPowers(keccak256(_msg).toEthSignedMessageHash(), _sigs, _signers, _powers); } /** * @notice Update new signers. * @param _newSigners sorted list of new signers * @param _curPowers powers of new signers * @param _sigs list of signatures sorted by signer addresses in ascending order * @param _curSigners sorted list of current signers * @param _curPowers powers of current signers */ function updateSigners( uint256 _triggerTime, address[] calldata _newSigners, uint256[] calldata _newPowers, bytes[] calldata _sigs, address[] calldata _curSigners, uint256[] calldata _curPowers ) external { // use trigger time for nonce protection, must be ascending require(_triggerTime > triggerTime, "Trigger time is not increasing"); // make sure triggerTime is not too large, as it cannot be decreased once set require(_triggerTime < block.timestamp + 3600, "Trigger time is too large"); bytes32 domain = keccak256(abi.encodePacked(block.chainid, address(this), "UpdateSigners")); verifySigs(abi.encodePacked(domain, _triggerTime, _newSigners, _newPowers), _sigs, _curSigners, _curPowers); _updateSigners(_newSigners, _newPowers); triggerTime = _triggerTime; } /** * @notice reset signers, only used for init setup and emergency recovery */ function resetSigners(address[] calldata _signers, uint256[] calldata _powers) external onlyOwner { require(block.timestamp > resetTime, "not reach reset time"); resetTime = MAX_INT; _updateSigners(_signers, _powers); } function notifyResetSigners() external onlyOwner { resetTime = block.timestamp + noticePeriod; emit ResetNotification(resetTime); } function increaseNoticePeriod(uint256 period) external onlyOwner { require(period > noticePeriod, "notice period can only be increased"); noticePeriod = period; } // separate from verifySigs func to avoid "stack too deep" issue function _verifySignedPowers( bytes32 _hash, bytes[] calldata _sigs, address[] calldata _signers, uint256[] calldata _powers ) private pure { require(_signers.length == _powers.length, "signers and powers length not match"); uint256 totalPower; // sum of all signer.power for (uint256 i = 0; i < _signers.length; i++) { totalPower += _powers[i]; } uint256 quorum = (totalPower * 2) / 3 + 1; uint256 signedPower; // sum of signer powers who are in sigs address prev = address(0); uint256 index = 0; for (uint256 i = 0; i < _sigs.length; i++) { address signer = _hash.recover(_sigs[i]); require(signer > prev, "signers not in ascending order"); prev = signer; // now find match signer add its power while (signer > _signers[index]) { index += 1; require(index < _signers.length, "signer not found"); } if (signer == _signers[index]) { signedPower += _powers[index]; } if (signedPower >= quorum) { // return early to save gas return; } } revert("quorum not reached"); } function _updateSigners(address[] calldata _signers, uint256[] calldata _powers) private { require(_signers.length == _powers.length, "signers and powers length not match"); address prev = address(0); for (uint256 i = 0; i < _signers.length; i++) { require(_signers[i] > prev, "New signers not in ascending order"); prev = _signers[i]; } ssHash = keccak256(abi.encodePacked(_signers, _powers)); emit SignersUpdated(_signers, _powers); } }
// SPDX-License-Identifier: GPL-3.0-only pragma solidity 0.8.17; import "./Governor.sol"; abstract contract DelayedTransfer is Governor { struct delayedTransfer { address receiver; address token; uint256 amount; uint256 timestamp; } mapping(bytes32 => delayedTransfer) public delayedTransfers; mapping(address => uint256) public delayThresholds; uint256 public delayPeriod; // in seconds event DelayedTransferAdded(bytes32 id); event DelayedTransferExecuted(bytes32 id, address receiver, address token, uint256 amount); event DelayPeriodUpdated(uint256 period); event DelayThresholdUpdated(address token, uint256 threshold); function setDelayThresholds(address[] calldata _tokens, uint256[] calldata _thresholds) external onlyGovernor { require(_tokens.length == _thresholds.length, "length mismatch"); for (uint256 i = 0; i < _tokens.length; i++) { delayThresholds[_tokens[i]] = _thresholds[i]; emit DelayThresholdUpdated(_tokens[i], _thresholds[i]); } } function setDelayPeriod(uint256 _period) external onlyGovernor { delayPeriod = _period; emit DelayPeriodUpdated(_period); } function _addDelayedTransfer( bytes32 id, address receiver, address token, uint256 amount ) internal { require(delayedTransfers[id].timestamp == 0, "delayed transfer already exists"); delayedTransfers[id] = delayedTransfer({ receiver: receiver, token: token, amount: amount, timestamp: block.timestamp }); emit DelayedTransferAdded(id); } // caller needs to do the actual token transfer function _executeDelayedTransfer(bytes32 id) internal returns (delayedTransfer memory) { delayedTransfer memory transfer = delayedTransfers[id]; require(transfer.timestamp > 0, "delayed transfer not exist"); require(block.timestamp > transfer.timestamp + delayPeriod, "delayed transfer still locked"); delete delayedTransfers[id]; emit DelayedTransferExecuted(id, transfer.receiver, transfer.token, transfer.amount); return transfer; } }
// SPDX-License-Identifier: GPL-3.0-only pragma solidity 0.8.17; import "./Ownable.sol"; abstract contract Governor is Ownable { mapping(address => bool) public governors; event GovernorAdded(address account); event GovernorRemoved(address account); modifier onlyGovernor() { require(isGovernor(msg.sender), "Caller is not governor"); _; } constructor() { _addGovernor(msg.sender); } function isGovernor(address _account) public view returns (bool) { return governors[_account]; } function addGovernor(address _account) public onlyOwner { _addGovernor(_account); } function removeGovernor(address _account) public onlyOwner { _removeGovernor(_account); } function renounceGovernor() public { _removeGovernor(msg.sender); } function _addGovernor(address _account) private { require(!isGovernor(_account), "Account is already governor"); governors[_account] = true; emit GovernorAdded(_account); } function _removeGovernor(address _account) private { require(isGovernor(_account), "Account is not governor"); governors[_account] = false; emit GovernorRemoved(_account); } }
// SPDX-License-Identifier: GPL-3.0-only pragma solidity ^0.8.0; /** * @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. * * This adds a normal func that setOwner if _owner is address(0). So we can't allow * renounceOwnership. So we can support Proxy based upgradable contract */ abstract contract Ownable { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the deployer as the initial owner. */ constructor() { _setOwner(msg.sender); } /** * @dev Only to be called by inherit contracts, in their init func called by Proxy * we require _owner == address(0), which is only possible when it's a delegateCall * because constructor sets _owner in contract state. */ function initOwner() internal { require(_owner == address(0), "owner already set"); _setOwner(msg.sender); } /** * @dev Returns the address of the current owner. */ function owner() public view virtual 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 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"); _setOwner(newOwner); } function _setOwner(address newOwner) private { address oldOwner = _owner; _owner = newOwner; emit OwnershipTransferred(oldOwner, newOwner); } }
// SPDX-License-Identifier: GPL-3.0-only pragma solidity 0.8.17; import "@openzeppelin/contracts/security/Pausable.sol"; import "./Ownable.sol"; abstract contract Pauser is Ownable, Pausable { mapping(address => bool) public pausers; event PauserAdded(address account); event PauserRemoved(address account); constructor() { _addPauser(msg.sender); } modifier onlyPauser() { require(isPauser(msg.sender), "Caller is not pauser"); _; } function pause() public onlyPauser { _pause(); } function unpause() public onlyPauser { _unpause(); } function isPauser(address account) public view returns (bool) { return pausers[account]; } function addPauser(address account) public onlyOwner { _addPauser(account); } function removePauser(address account) public onlyOwner { _removePauser(account); } function renouncePauser() public { _removePauser(msg.sender); } function _addPauser(address account) private { require(!isPauser(account), "Account is already pauser"); pausers[account] = true; emit PauserAdded(account); } function _removePauser(address account) private { require(isPauser(account), "Account is not pauser"); pausers[account] = false; emit PauserRemoved(account); } }
// SPDX-License-Identifier: GPL-3.0-only pragma solidity 0.8.17; import "./Governor.sol"; abstract contract VolumeControl is Governor { uint256 public epochLength; // seconds mapping(address => uint256) public epochVolumes; // key is token mapping(address => uint256) public epochVolumeCaps; // key is token mapping(address => uint256) public lastOpTimestamps; // key is token event EpochLengthUpdated(uint256 length); event EpochVolumeUpdated(address token, uint256 cap); function setEpochLength(uint256 _length) external onlyGovernor { epochLength = _length; emit EpochLengthUpdated(_length); } function setEpochVolumeCaps(address[] calldata _tokens, uint256[] calldata _caps) external onlyGovernor { require(_tokens.length == _caps.length, "length mismatch"); for (uint256 i = 0; i < _tokens.length; i++) { epochVolumeCaps[_tokens[i]] = _caps[i]; emit EpochVolumeUpdated(_tokens[i], _caps[i]); } } function _updateVolume(address _token, uint256 _amount) internal { if (epochLength == 0) { return; } uint256 cap = epochVolumeCaps[_token]; if (cap == 0) { return; } uint256 volume = epochVolumes[_token]; uint256 timestamp = block.timestamp; uint256 epochStartTime = (timestamp / epochLength) * epochLength; if (lastOpTimestamps[_token] < epochStartTime) { volume = _amount; } else { volume += _amount; } require(volume <= cap, "volume exceeds cap"); epochVolumes[_token] = volume; lastOpTimestamps[_token] = timestamp; } }
{ "optimizer": { "enabled": true, "runs": 800 }, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } }, "metadata": { "useLiteralContent": true }, "libraries": {} }
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
0000000000000000000000002536fe9ab3f511540f2f9e2ec2a805005c3dd8000000000000000000000000001b9dfc56e38b0f92448659c114e2347bd803911c
-----Decoded View---------------
Arg [0] : _blastPointsAddress (address): 0x2536FE9ab3F511540F2f9e2eC2A805005C3Dd800
Arg [1] : _pointsOperator (address): 0x1b9dFC56e38b0F92448659C114e2347Bd803911c
-----Encoded View---------------
2 Constructor Arguments found :
Arg [0] : 0000000000000000000000002536fe9ab3f511540f2f9e2ec2a805005c3dd800
Arg [1] : 0000000000000000000000001b9dfc56e38b0f92448659c114e2347bd803911c
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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.