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// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "@openzeppelin/contracts/security/ReentrancyGuard.sol";
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import "ExcessivelySafeCall/ExcessivelySafeCall.sol";
import "./libs/BytesLib.sol";
import "./interfaces/CCTP/v2/ITokenMessengerV2.sol";

contract FastMCTP is ReentrancyGuard {
	using SafeERC20 for IERC20;
	using BytesLib for bytes;
	using ExcessivelySafeCall for address;

	ITokenMessengerV2 public immutable cctpTokenMessengerV2;
	address public feeManager;

	mapping(bytes32 => bytes32) public keyToMintRecipient;
	mapping(uint32 => bytes32) public domainToCaller;

	mapping(address => bool) public whitelistedSwapProtocols;
	mapping(address => bool) public whitelistedMsgSenders;

	address public guardian;
	address public nextGuardian;
	bool public paused;

	uint8 internal constant ETH_DECIMALS = 18;

	uint256 internal constant CCTPV2_SOURCE_DOMAIN_INDEX = 4;
	uint256 internal constant CCTPV2_DESTINATION_DOMAIN_INDEX = 8;
	uint256 internal constant CCTPV2_NONCE_INDEX = 12;
	uint256 internal constant CCTPV2_DETINATION_CALLER_INDEX = 108;
	uint256 internal constant CCTPV2_MESSAGE_BODY_INDEX = 148;
	uint256 internal constant CCTPV2_SOURCE_TOKEN_INDEX = CCTPV2_MESSAGE_BODY_INDEX + 4;
	uint256 internal constant CCTPV2_MINT_RECIPIENT_INDEX = CCTPV2_MESSAGE_BODY_INDEX + 36;
	uint256 internal constant HOOK_DATA_INDEX = CCTPV2_MESSAGE_BODY_INDEX + 228;

	uint256 internal constant GAS_LIMIT_FEE_MANAGER = 1000000;

	event OrderFulfilled(uint32 sourceDomain, bytes32 sourceNonce, uint256 amount);
	event OrderRefunded(uint32 sourceDomain, bytes32 sourceNonce, uint256 amount);

	error Paused();
	error Unauthorized();
	error CctpReceiveFailed();
	error InvalidGasDrop();
	error InvalidMintRecipient();
	error InvalidRedeemFee();
	error InvalidPayload();
	error DeadlineViolation();
	error InvalidAddress();
	error InvalidPayloadType();
	error EthTransferFailed();
	error InvalidAmountOut();
	error MintRecipientNotSet();
	error CallerNotSet();
	error InvalidRefundFee();
	error AlreadySet();
	error UnauthorizedSwapProtocol();
	error UnauthorizedMsgSender();

	struct BridgePayload {
		uint8 payloadType;
		bytes32 destAddr;
		uint64 gasDrop;
		uint64 redeemFee;
		bytes32 referrerAddr;
		uint8 referrerBps;
		bytes32 customPayload;
	}

	struct OrderPayload {
		uint8 payloadType;
		bytes32 destAddr;
		bytes32 tokenOut;
		uint64 amountOutMin;
		uint64 gasDrop;
		uint64 redeemFee;
		uint64 refundFee;
		uint64 deadline;
		bytes32 referrerAddr;
		uint8 referrerBps;
	}

	modifier checkRecipient(bytes memory cctpMsg) {
		if (truncateAddress(cctpMsg.toBytes32(CCTPV2_MINT_RECIPIENT_INDEX)) != address(this)) {
			revert InvalidMintRecipient();
		}
		_;
	}

	modifier whenNotPaused() {
		if (paused) {
			revert Paused();
		}
		_;
	}

	constructor(
		address _cctpTokenMessengerV2,
		address _feeManager
	) {
		cctpTokenMessengerV2 = ITokenMessengerV2(_cctpTokenMessengerV2);
		feeManager = _feeManager;
		guardian = msg.sender;
	}

	function bridge(
		address tokenIn,
		uint256 amountIn,
		uint64 redeemFee,
		uint256 circleMaxFee,
		uint64 gasDrop,
		bytes32 destAddr,
		uint32 destDomain,
		bytes32 referrerAddress,
		uint8 referrerBps,
		uint8 payloadType,
		uint32 minFinalityThreshold,
		bytes memory customPayload
	) external nonReentrant whenNotPaused {
		if (redeemFee + circleMaxFee >= amountIn) {
			revert InvalidRedeemFee();
		}

		if (payloadType != 1 && payloadType != 2) {
			revert InvalidPayloadType();
		}

		IERC20(tokenIn).safeTransferFrom(msg.sender, address(this), amountIn);
		approveIfNeeded(tokenIn, address(cctpTokenMessengerV2), amountIn, true);

		require(referrerBps <= 100, "ReferrerBps should be less than 100");

		bytes32 customPayloadHash;
		if (payloadType == 2) {
			customPayloadHash = keccak256(customPayload);
		}

		BridgePayload memory bridgePayload = BridgePayload({
			payloadType: payloadType,
			destAddr: destAddr,
			gasDrop: gasDrop,
			redeemFee: redeemFee,
			referrerAddr: referrerAddress,
			referrerBps: referrerBps,
			customPayload: customPayloadHash
		});

		sendCctp(tokenIn, amountIn, destDomain, circleMaxFee, minFinalityThreshold, encodeBridgePayload(bridgePayload));
	}

	function createOrder(
		address tokenIn,
		uint256 amountIn,
		uint256 circleMaxFee,
		uint32 destDomain,
		uint32 minFinalityThreshold,
		OrderPayload memory orderPayload
	) external nonReentrant whenNotPaused {
		if (orderPayload.redeemFee + circleMaxFee >= amountIn) {
			revert InvalidRedeemFee();
		}

		if (orderPayload.refundFee + circleMaxFee >= amountIn) {
			revert InvalidRefundFee();
		}

		if (orderPayload.payloadType != 3) {
			revert InvalidPayloadType();
		}

		require(orderPayload.referrerBps <= 100, "ReferrerBps should be less than 100");

		if (orderPayload.tokenOut == bytes32(0) && orderPayload.gasDrop > 0) {
			revert InvalidGasDrop();
		}

		IERC20(tokenIn).safeTransferFrom(msg.sender, address(this), amountIn);
		approveIfNeeded(tokenIn, address(cctpTokenMessengerV2), amountIn, true);

		sendCctp(tokenIn, amountIn, destDomain, circleMaxFee, minFinalityThreshold, encodeOrderPayload(orderPayload));
	}

	function redeem(
		bytes memory cctpMsg,
		bytes memory cctpSigs
	) external nonReentrant payable checkRecipient(cctpMsg) {

		BridgePayload memory bridgePayload = recreateBridgePayload(cctpMsg);

		if (bridgePayload.payloadType != 1 && bridgePayload.payloadType != 2) {
			revert InvalidPayloadType();
		}

		address recipient = truncateAddress(bridgePayload.destAddr);
		if (bridgePayload.payloadType == 2 && msg.sender != recipient) {
			revert Unauthorized();
		}

		(address localToken, uint256 amount) = receiveCctp(cctpMsg, cctpSigs);

		if (bridgePayload.redeemFee > amount) {
			revert InvalidRedeemFee();
		}

		amount = amount - uint256(bridgePayload.redeemFee);

		uint8 referrerBps = bridgePayload.referrerBps > 100 ? 100 : bridgePayload.referrerBps;
		uint8 protocolBps = safeCalcFastMCTPProtocolBps(
			bridgePayload.payloadType,
			localToken,
			amount,
			localToken,
			truncateAddress(bridgePayload.referrerAddr),
			referrerBps
		);
		protocolBps = protocolBps > 100 ? 100 : protocolBps;
		uint256 protocolAmount = amount * protocolBps / 10000;
		uint256 referrerAmount = amount * referrerBps / 10000;

		depositRelayerFee(msg.sender, localToken, uint256(bridgePayload.redeemFee));
		IERC20(localToken).safeTransfer(recipient, amount - protocolAmount - referrerAmount);

		if (referrerAmount > 0) {
			try IERC20(localToken).transfer(truncateAddress(bridgePayload.referrerAddr), referrerAmount) {} catch {}
		}
		if (protocolAmount > 0) {
			try IERC20(localToken).transfer(safeGetFeeCollector(), protocolAmount) {} catch {}
		}

		if (bridgePayload.gasDrop > 0) {
			uint256 denormalizedGasDrop = deNormalizeAmount(bridgePayload.gasDrop, ETH_DECIMALS);
			if (msg.value != denormalizedGasDrop) {
				revert InvalidGasDrop();
			}
			payEth(recipient, denormalizedGasDrop, false);
		}
	}

	function fulfillOrder(
		bytes memory cctpMsg,
		bytes memory cctpSigs,
		address swapProtocol,
		bytes memory swapData
	) external nonReentrant payable checkRecipient(cctpMsg) {
		OrderPayload memory orderPayload = recreateOrderPayload(cctpMsg);
		if (orderPayload.payloadType != 3) {
			revert InvalidPayloadType();
		}

		if (orderPayload.deadline < block.timestamp) {
			revert DeadlineViolation();
		}

		if (!whitelistedSwapProtocols[swapProtocol]) {
			revert UnauthorizedSwapProtocol();
		}

		if (swapProtocol == address(cctpTokenMessengerV2) || swapProtocol == address(cctpTokenMessengerV2.localMessageTransmitter())) {
			revert UnauthorizedSwapProtocol();
		}

		if (!whitelistedMsgSenders[msg.sender]) {
			revert UnauthorizedMsgSender();
		}

		(address localToken, uint256 cctpAmount) = receiveCctp(cctpMsg, cctpSigs);

		if (orderPayload.redeemFee > 0) {
			IERC20(localToken).safeTransfer(msg.sender, orderPayload.redeemFee);
		}

		cctpAmount = cctpAmount - uint256(orderPayload.redeemFee);

		(uint256 referrerAmount, uint256 protocolAmount) = getFeeAmounts(orderPayload, cctpAmount, localToken);

		if (referrerAmount > 0) {
			try IERC20(localToken).transfer(truncateAddress(orderPayload.referrerAddr), referrerAmount) {} catch {}
		}

		if (protocolAmount > 0) {
			try IERC20(localToken).transfer(safeGetFeeCollector(), protocolAmount) {} catch {}
		}

		address tokenOut = truncateAddress(orderPayload.tokenOut);
		require(tokenOut != localToken, "tokenOut cannot be localToken");
		approveIfNeeded(localToken, swapProtocol, cctpAmount - protocolAmount - referrerAmount, false);

		uint256 amountOut;
		if (tokenOut == address(0)) {
			amountOut = address(this).balance;
		} else {
			amountOut = IERC20(tokenOut).balanceOf(address(this));
		}

		(bool swapSuccess, bytes memory swapReturn) = swapProtocol.call{value: 0}(swapData);
		require(swapSuccess, string(swapReturn));

		if (tokenOut == address(0)) {
			amountOut = address(this).balance - amountOut;
		} else {
			amountOut = IERC20(tokenOut).balanceOf(address(this)) - amountOut;
		}

		uint8 decimals;
		if (tokenOut == address(0)) {
			decimals = ETH_DECIMALS;
		} else {
			decimals = decimalsOf(tokenOut);
		}

		makePayments(
			orderPayload,
			tokenOut,
			amountOut
		);

		if (amountOut < deNormalizeAmount(orderPayload.amountOutMin, decimals)) {
			revert InvalidAmountOut();
		}

		logFulfilled(cctpMsg, amountOut);
	}

	function refund(
		bytes memory cctpMsg,
		bytes memory cctpSigs
	) external nonReentrant payable checkRecipient(cctpMsg) {
		(address localToken, uint256 amount) = receiveCctp(cctpMsg, cctpSigs);

		OrderPayload memory orderPayload = recreateOrderPayload(cctpMsg);
		if (orderPayload.payloadType != 3) {
			revert InvalidPayloadType();
		}

		if (orderPayload.deadline >= block.timestamp && localToken != truncateAddress(orderPayload.tokenOut)) {
			revert DeadlineViolation();
		}

		uint256 gasDrop = deNormalizeAmount(orderPayload.gasDrop, ETH_DECIMALS);
		if (msg.value != gasDrop) {
			revert InvalidGasDrop();
		}

		address destAddr = truncateAddress(orderPayload.destAddr);
		if (gasDrop > 0) {
			payEth(destAddr, gasDrop, false);
		}

		IERC20(localToken).safeTransfer(msg.sender, orderPayload.refundFee);
		IERC20(localToken).safeTransfer(destAddr, amount - orderPayload.refundFee);

		emit OrderRefunded(cctpMsg.toUint32(CCTPV2_SOURCE_DOMAIN_INDEX), cctpMsg.toBytes32(CCTPV2_NONCE_INDEX), amount);
	}

	function receiveCctp(bytes memory cctpMsg, bytes memory cctpSigs) internal returns (address, uint256) {
		uint32 cctpSourceDomain = cctpMsg.toUint32(CCTPV2_SOURCE_DOMAIN_INDEX);
		bytes32 cctpSourceToken = cctpMsg.toBytes32(CCTPV2_SOURCE_TOKEN_INDEX);
		address localToken = cctpTokenMessengerV2.localMinter().getLocalToken(cctpSourceDomain, cctpSourceToken);

		uint256 amount = IERC20(localToken).balanceOf(address(this));
		bool success = cctpTokenMessengerV2.localMessageTransmitter().receiveMessage(cctpMsg, cctpSigs);
		if (!success) {
			revert CctpReceiveFailed();
		}
		amount = IERC20(localToken).balanceOf(address(this)) - amount;
		return (localToken, amount);
	}

	function sendCctp(
		address tokenIn,
		uint256 amountIn,
		uint32 destDomain,
		uint256 maxFee,
		uint32 minFinalityThreshold,
		bytes memory hookData
	) internal {
		cctpTokenMessengerV2.depositForBurnWithHook(
			amountIn,
			destDomain,
			getMintRecipient(destDomain, tokenIn),
			tokenIn,
			getCaller(destDomain),
			maxFee,
			minFinalityThreshold,
			hookData
		);
	}

	function makePayments(
		OrderPayload memory orderPayload,
		address tokenOut,
		uint256 amount
	) internal {
		address destAddr = truncateAddress(orderPayload.destAddr);
		if (tokenOut == address(0)) {
			payEth(destAddr, amount, true);
		} else {
			if (orderPayload.gasDrop > 0) {
				uint256 gasDrop = deNormalizeAmount(orderPayload.gasDrop, ETH_DECIMALS);
				if (msg.value != gasDrop) {
					revert InvalidGasDrop();
				}
				payEth(destAddr, gasDrop, false);
			}
			IERC20(tokenOut).safeTransfer(destAddr, amount);
		}
	}

	function logFulfilled(bytes memory cctpMsg, uint256 amount) internal {
		emit OrderFulfilled(cctpMsg.toUint32(CCTPV2_SOURCE_DOMAIN_INDEX), cctpMsg.toBytes32(CCTPV2_NONCE_INDEX), amount);
	}

	function recreateBridgePayload(
		bytes memory cctpMsg
	) internal pure returns (BridgePayload memory) {
		return BridgePayload({
			payloadType: cctpMsg.toUint8(HOOK_DATA_INDEX),
			destAddr: cctpMsg.toBytes32(HOOK_DATA_INDEX + 1),
			gasDrop: cctpMsg.toUint64(HOOK_DATA_INDEX + 33),
			redeemFee: cctpMsg.toUint64(HOOK_DATA_INDEX + 41),
			referrerAddr: cctpMsg.toBytes32(HOOK_DATA_INDEX + 49),
			referrerBps: cctpMsg.toUint8(HOOK_DATA_INDEX + 81),
			customPayload: cctpMsg.toBytes32(HOOK_DATA_INDEX + 82)
		});
	}

	function encodeBridgePayload(BridgePayload memory bridgePayload) internal pure returns (bytes memory) {
		return abi.encodePacked(
			bridgePayload.payloadType,
			bridgePayload.destAddr,
			bridgePayload.gasDrop,
			bridgePayload.redeemFee,
			bridgePayload.referrerAddr,
			bridgePayload.referrerBps,
			bridgePayload.customPayload
		);
	}

	function recreateOrderPayload(
		bytes memory cctpMsg
	) internal pure returns (OrderPayload memory) {
		return OrderPayload({
			payloadType: cctpMsg.toUint8(HOOK_DATA_INDEX),
			destAddr: cctpMsg.toBytes32(HOOK_DATA_INDEX + 1),
			tokenOut: cctpMsg.toBytes32(HOOK_DATA_INDEX + 33),
			amountOutMin: cctpMsg.toUint64(HOOK_DATA_INDEX + 65),
			gasDrop: cctpMsg.toUint64(HOOK_DATA_INDEX + 73),
			redeemFee: cctpMsg.toUint64(HOOK_DATA_INDEX + 81),
			refundFee: cctpMsg.toUint64(HOOK_DATA_INDEX + 89),
			deadline: cctpMsg.toUint64(HOOK_DATA_INDEX + 97),
			referrerAddr: cctpMsg.toBytes32(HOOK_DATA_INDEX + 105),
			referrerBps: cctpMsg.toUint8(HOOK_DATA_INDEX + 137)
		});
	}

	function encodeOrderPayload(OrderPayload memory orderPayload) internal pure returns (bytes memory) {
		return abi.encodePacked(
			orderPayload.payloadType,
			orderPayload.destAddr,
			orderPayload.tokenOut,
			orderPayload.amountOutMin,
			orderPayload.gasDrop,
			orderPayload.redeemFee,
			orderPayload.refundFee,
			orderPayload.deadline,
			orderPayload.referrerAddr,
			orderPayload.referrerBps
		);
	}

	function approveIfNeeded(address tokenAddr, address spender, uint256 amount, bool max) internal {
		IERC20 token = IERC20(tokenAddr);
		uint256 currentAllowance = token.allowance(address(this), spender);

		if (currentAllowance < amount) {
			if (currentAllowance > 0) {
				token.safeApprove(spender, 0);
			}
			token.safeApprove(spender, max ? type(uint256).max : amount);
		}
	}

	function payEth(address to, uint256 amount, bool revertOnFailure) internal {
		(bool success, ) = payable(to).call{value: amount}('');
		if (revertOnFailure) {
			if (success != true) {
				revert EthTransferFailed();
			}
		}
	}

	function getFeeAmounts(OrderPayload memory orderPayload, uint256 cctpAmount, address localToken) internal returns (uint256 referrerAmount, uint256 protocolAmount) {
		uint8 referrerBps = orderPayload.referrerBps > 100 ? 100 : orderPayload.referrerBps;
		referrerAmount = cctpAmount * referrerBps / 10000;
		uint8 protocolBps = safeCalcFastMCTPProtocolBps(
			orderPayload.payloadType,
			localToken,
			cctpAmount,
			truncateAddress(orderPayload.tokenOut),
			truncateAddress(orderPayload.referrerAddr),
			referrerBps
		);
		protocolBps = protocolBps > 100 ? 100 : protocolBps;
		protocolAmount = cctpAmount * protocolBps / 10000;

		return (referrerAmount, protocolAmount);
	}

    function safeCalcFastMCTPProtocolBps(
        uint8 payloadType,
        address localToken,
        uint256 cctpAmount,
        address tokenOut,
        address referrerAddr,
        uint8 referrerBps
    ) internal returns (uint8) {
		(, bytes memory returnData) = address(feeManager)
            .excessivelySafeCall(
                GAS_LIMIT_FEE_MANAGER, // _gas
                0, // _value
                32, // _maxCopy
                abi.encodeWithSignature(
                    "calcFastMCTPProtocolBps(uint8,address,uint256,address,address,uint8)",
                    payloadType,
                    localToken,
                    cctpAmount,
                    tokenOut,
                    referrerAddr,
                    referrerBps
                )
            );
		
		uint256 protocolBps;
		if (returnData.length < 32) {
			protocolBps = 0;
		} else {
			protocolBps = abi.decode(returnData, (uint256));
		}
		return uint8(protocolBps);
    }

    function safeGetFeeCollector() internal returns (address) {
        (, bytes memory returnData) = address(feeManager)
			.excessivelySafeCall(
				GAS_LIMIT_FEE_MANAGER, // _gas
				0, // _value
				32, // _maxCopy
				abi.encodeWithSignature("feeCollector()")
			);

		uint256 feeCollector;
		if (returnData.length < 32) {
			feeCollector = 0;
		} else {
			feeCollector = abi.decode(returnData, (uint256));
		}
		return address(uint160(feeCollector));
    }

	function depositRelayerFee(address relayer, address token, uint256 amount) internal {
		try IERC20(token).transfer(address(feeManager), amount) {} catch {}

		address(feeManager)
			.excessivelySafeCall(
				GAS_LIMIT_FEE_MANAGER, // _gas
				0, // _value
				32, // _maxCopy
				abi.encodeWithSignature("depositFee(address,address,uint256)", relayer, token, amount)
			);
	}

	function getMintRecipient(uint32 destDomain, address tokenIn) internal view returns (bytes32) {
		bytes32 mintRecepient = keyToMintRecipient[keccak256(abi.encodePacked(destDomain, tokenIn))];
		if (mintRecepient == bytes32(0)) {
			revert MintRecipientNotSet();
		}
		return mintRecepient;
	}

	function setMintRecipient(uint32 destDomain, address tokenIn, bytes32 mintRecipient) public {
		if (msg.sender != guardian) {
			revert Unauthorized();
		}
		bytes32 key = keccak256(abi.encodePacked(destDomain, tokenIn));
		if (keyToMintRecipient[key] != bytes32(0)) {
			revert AlreadySet();
		}
		keyToMintRecipient[key] = mintRecipient;
	}

	function getCaller(uint32 destDomain) internal view returns (bytes32 caller) {
		caller = domainToCaller[destDomain];
		if (caller == bytes32(0)) {
			revert CallerNotSet();
		}
		return caller;
	}

	function setDomainCallers(uint32 domain, bytes32 caller) public {
		if (msg.sender != guardian) {
			revert Unauthorized();
		}
		if (domainToCaller[domain] != bytes32(0)) {
			revert AlreadySet();
		}
		domainToCaller[domain] = caller;
	}

	function setWhitelistedSwapProtocols(address protocol, bool isWhitelisted) public {
		if (msg.sender != guardian) {
			revert Unauthorized();
		}
		whitelistedSwapProtocols[protocol] = isWhitelisted;
	}

	function setWhitelistedMsgSenders(address sender, bool isWhitelisted) public {
		if (msg.sender != guardian) {
			revert Unauthorized();
		}
		whitelistedMsgSenders[sender] = isWhitelisted;
	}

	function decimalsOf(address token) internal view returns(uint8) {
		(,bytes memory queriedDecimals) = token.staticcall(abi.encodeWithSignature('decimals()'));
		return abi.decode(queriedDecimals, (uint8));
	}

	function deNormalizeAmount(uint256 amount, uint8 decimals) internal pure returns(uint256) {
		if (decimals > 8) {
			amount *= 10 ** (decimals - 8);
		}
		return amount;
	}

	function truncateAddress(bytes32 b) internal pure returns (address) {
		return address(uint160(uint256(b)));
	}

	function setFeeManager(address _feeManager) public {
		if (msg.sender != guardian) {
			revert Unauthorized();
		}
		feeManager = _feeManager;
	}	

	function rescueToken(address token, uint256 amount, address to) public {
		if (msg.sender != guardian) {
			revert Unauthorized();
		}
		IERC20(token).safeTransfer(to, amount);
	}

	function rescueEth(uint256 amount, address payable to) public {
		if (msg.sender != guardian) {
			revert Unauthorized();
		}
		payEth(to, amount, true);
	}

	function rescueRedeem(bytes memory cctpMsg, bytes memory cctpSigs) public {
		if (truncateAddress(cctpMsg.toBytes32(CCTPV2_MINT_RECIPIENT_INDEX)) == address(this)) {
			revert Unauthorized();
		}

		bool success = cctpTokenMessengerV2.localMessageTransmitter().receiveMessage(cctpMsg, cctpSigs);
		if (!success) {
			revert CctpReceiveFailed();
		}
	}

	function setPause(bool _pause) public {
		if (msg.sender != guardian) {
			revert Unauthorized();
		}
		paused = _pause;
	}

	function changeGuardian(address newGuardian) public {
		if (msg.sender != guardian) {
			revert Unauthorized();
		}
		nextGuardian = newGuardian;
	}

	function claimGuardian() public {
		if (msg.sender != nextGuardian) {
			revert Unauthorized();
		}
		guardian = nextGuardian;
	}

	receive() external payable {}
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (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() {
        _nonReentrantBefore();
        _;
        _nonReentrantAfter();
    }

    function _nonReentrantBefore() private {
        // On the first call to nonReentrant, _status will be _NOT_ENTERED
        require(_status != _ENTERED, "ReentrancyGuard: reentrant call");

        // Any calls to nonReentrant after this point will fail
        _status = _ENTERED;
    }

    function _nonReentrantAfter() private {
        // By storing the original value once again, a refund is triggered (see
        // https://eips.ethereum.org/EIPS/eip-2200)
        _status = _NOT_ENTERED;
    }

    /**
     * @dev Returns true if the reentrancy guard is currently set to "entered", which indicates there is a
     * `nonReentrant` function in the call stack.
     */
    function _reentrancyGuardEntered() internal view returns (bool) {
        return _status == _ENTERED;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @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);

    /**
     * @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);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.3) (token/ERC20/utils/SafeERC20.sol)

pragma solidity ^0.8.0;

import "../IERC20.sol";
import "../extensions/IERC20Permit.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;

    /**
     * @dev Transfer `value` amount of `token` from the calling contract to `to`. If `token` returns no value,
     * non-reverting calls are assumed to be successful.
     */
    function safeTransfer(IERC20 token, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
    }

    /**
     * @dev Transfer `value` amount of `token` from `from` to `to`, spending the approval given by `from` to the
     * calling contract. If `token` returns no value, non-reverting calls are assumed to be successful.
     */
    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));
    }

    /**
     * @dev Increase the calling contract's allowance toward `spender` by `value`. If `token` returns no value,
     * non-reverting calls are assumed to be successful.
     */
    function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
        uint256 oldAllowance = token.allowance(address(this), spender);
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, oldAllowance + value));
    }

    /**
     * @dev Decrease the calling contract's allowance toward `spender` by `value`. If `token` returns no value,
     * non-reverting calls are assumed to be successful.
     */
    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");
            _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, oldAllowance - value));
        }
    }

    /**
     * @dev Set the calling contract's allowance toward `spender` to `value`. If `token` returns no value,
     * non-reverting calls are assumed to be successful. Meant to be used with tokens that require the approval
     * to be set to zero before setting it to a non-zero value, such as USDT.
     */
    function forceApprove(IERC20 token, address spender, uint256 value) internal {
        bytes memory approvalCall = abi.encodeWithSelector(token.approve.selector, spender, value);

        if (!_callOptionalReturnBool(token, approvalCall)) {
            _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, 0));
            _callOptionalReturn(token, approvalCall);
        }
    }

    /**
     * @dev Use a ERC-2612 signature to set the `owner` approval toward `spender` on `token`.
     * Revert on invalid signature.
     */
    function safePermit(
        IERC20Permit token,
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) internal {
        uint256 nonceBefore = token.nonces(owner);
        token.permit(owner, spender, value, deadline, v, r, s);
        uint256 nonceAfter = token.nonces(owner);
        require(nonceAfter == nonceBefore + 1, "SafeERC20: permit did not succeed");
    }

    /**
     * @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");
        require(returndata.length == 0 || abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
    }

    /**
     * @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).
     *
     * This is a variant of {_callOptionalReturn} that silents catches all reverts and returns a bool instead.
     */
    function _callOptionalReturnBool(IERC20 token, bytes memory data) private returns (bool) {
        // 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 cannot use {Address-functionCall} here since this should return false
        // and not revert is the subcall reverts.

        (bool success, bytes memory returndata) = address(token).call(data);
        return
            success && (returndata.length == 0 || abi.decode(returndata, (bool))) && Address.isContract(address(token));
    }
}

// SPDX-License-Identifier: MIT OR Apache-2.0
pragma solidity >=0.7.6;

library ExcessivelySafeCall {
    uint256 constant LOW_28_MASK =
        0x00000000ffffffffffffffffffffffffffffffffffffffffffffffffffffffff;

    /// @notice Use when you _really_ really _really_ don't trust the called
    /// contract. This prevents the called contract from causing reversion of
    /// the caller in as many ways as we can.
    /// @dev The main difference between this and a solidity low-level call is
    /// that we limit the number of bytes that the callee can cause to be
    /// copied to caller memory. This prevents stupid things like malicious
    /// contracts returning 10,000,000 bytes causing a local OOG when copying
    /// to memory.
    /// @param _target The address to call
    /// @param _gas The amount of gas to forward to the remote contract
    /// @param _value The value in wei to send to the remote contract
    /// @param _maxCopy The maximum number of bytes of returndata to copy
    /// to memory.
    /// @param _calldata The data to send to the remote contract
    /// @return success and returndata, as `.call()`. Returndata is capped to
    /// `_maxCopy` bytes.
    function excessivelySafeCall(
        address _target,
        uint256 _gas,
        uint256 _value,
        uint16 _maxCopy,
        bytes memory _calldata
    ) internal returns (bool, bytes memory) {
        // set up for assembly call
        uint256 _toCopy;
        bool _success;
        bytes memory _returnData = new bytes(_maxCopy);
        // dispatch message to recipient
        // by assembly calling "handle" function
        // we call via assembly to avoid memcopying a very large returndata
        // returned by a malicious contract
        assembly {
            _success := call(
                _gas, // gas
                _target, // recipient
                _value, // ether value
                add(_calldata, 0x20), // inloc
                mload(_calldata), // inlen
                0, // outloc
                0 // outlen
            )
            // limit our copy to 256 bytes
            _toCopy := returndatasize()
            if gt(_toCopy, _maxCopy) {
                _toCopy := _maxCopy
            }
            // Store the length of the copied bytes
            mstore(_returnData, _toCopy)
            // copy the bytes from returndata[0:_toCopy]
            returndatacopy(add(_returnData, 0x20), 0, _toCopy)
        }
        return (_success, _returnData);
    }

    /// @notice Use when you _really_ really _really_ don't trust the called
    /// contract. This prevents the called contract from causing reversion of
    /// the caller in as many ways as we can.
    /// @dev The main difference between this and a solidity low-level call is
    /// that we limit the number of bytes that the callee can cause to be
    /// copied to caller memory. This prevents stupid things like malicious
    /// contracts returning 10,000,000 bytes causing a local OOG when copying
    /// to memory.
    /// @param _target The address to call
    /// @param _gas The amount of gas to forward to the remote contract
    /// @param _maxCopy The maximum number of bytes of returndata to copy
    /// to memory.
    /// @param _calldata The data to send to the remote contract
    /// @return success and returndata, as `.call()`. Returndata is capped to
    /// `_maxCopy` bytes.
    function excessivelySafeStaticCall(
        address _target,
        uint256 _gas,
        uint16 _maxCopy,
        bytes memory _calldata
    ) internal view returns (bool, bytes memory) {
        // set up for assembly call
        uint256 _toCopy;
        bool _success;
        bytes memory _returnData = new bytes(_maxCopy);
        // dispatch message to recipient
        // by assembly calling "handle" function
        // we call via assembly to avoid memcopying a very large returndata
        // returned by a malicious contract
        assembly {
            _success := staticcall(
                _gas, // gas
                _target, // recipient
                add(_calldata, 0x20), // inloc
                mload(_calldata), // inlen
                0, // outloc
                0 // outlen
            )
            // limit our copy to 256 bytes
            _toCopy := returndatasize()
            if gt(_toCopy, _maxCopy) {
                _toCopy := _maxCopy
            }
            // Store the length of the copied bytes
            mstore(_returnData, _toCopy)
            // copy the bytes from returndata[0:_toCopy]
            returndatacopy(add(_returnData, 0x20), 0, _toCopy)
        }
        return (_success, _returnData);
    }

    /**
     * @notice Swaps function selectors in encoded contract calls
     * @dev Allows reuse of encoded calldata for functions with identical
     * argument types but different names. It simply swaps out the first 4 bytes
     * for the new selector. This function modifies memory in place, and should
     * only be used with caution.
     * @param _newSelector The new 4-byte selector
     * @param _buf The encoded contract args
     */
    function swapSelector(bytes4 _newSelector, bytes memory _buf)
        internal
        pure
    {
        require(_buf.length >= 4);
        uint256 _mask = LOW_28_MASK;
        assembly {
            // load the first word of
            let _word := mload(add(_buf, 0x20))
            // mask out the top 4 bytes
            // /x
            _word := and(_word, _mask)
            _word := or(_newSelector, _word)
            mstore(add(_buf, 0x20), _word)
        }
    }
}

// SPDX-License-Identifier: Unlicense
/*
 * @title Solidity Bytes Arrays Utils
 * @author Gonçalo Sá <[email protected]>
 *
 * @dev Bytes tightly packed arrays utility library for ethereum contracts written in Solidity.
 *      The library lets you concatenate, slice and type cast bytes arrays both in memory and storage.
 */
pragma solidity >=0.8.0 <0.9.0;


library BytesLib {
    function concat(
        bytes memory _preBytes,
        bytes memory _postBytes
    )
        internal
        pure
        returns (bytes memory)
    {
        bytes memory tempBytes;

        assembly {
            // Get a location of some free memory and store it in tempBytes as
            // Solidity does for memory variables.
            tempBytes := mload(0x40)

            // Store the length of the first bytes array at the beginning of
            // the memory for tempBytes.
            let length := mload(_preBytes)
            mstore(tempBytes, length)

            // Maintain a memory counter for the current write location in the
            // temp bytes array by adding the 32 bytes for the array length to
            // the starting location.
            let mc := add(tempBytes, 0x20)
            // Stop copying when the memory counter reaches the length of the
            // first bytes array.
            let end := add(mc, length)

            for {
                // Initialize a copy counter to the start of the _preBytes data,
                // 32 bytes into its memory.
                let cc := add(_preBytes, 0x20)
            } lt(mc, end) {
                // Increase both counters by 32 bytes each iteration.
                mc := add(mc, 0x20)
                cc := add(cc, 0x20)
            } {
                // Write the _preBytes data into the tempBytes memory 32 bytes
                // at a time.
                mstore(mc, mload(cc))
            }

            // Add the length of _postBytes to the current length of tempBytes
            // and store it as the new length in the first 32 bytes of the
            // tempBytes memory.
            length := mload(_postBytes)
            mstore(tempBytes, add(length, mload(tempBytes)))

            // Move the memory counter back from a multiple of 0x20 to the
            // actual end of the _preBytes data.
            mc := end
            // Stop copying when the memory counter reaches the new combined
            // length of the arrays.
            end := add(mc, length)

            for {
                let cc := add(_postBytes, 0x20)
            } lt(mc, end) {
                mc := add(mc, 0x20)
                cc := add(cc, 0x20)
            } {
                mstore(mc, mload(cc))
            }

            // Update the free-memory pointer by padding our last write location
            // to 32 bytes: add 31 bytes to the end of tempBytes to move to the
            // next 32 byte block, then round down to the nearest multiple of
            // 32. If the sum of the length of the two arrays is zero then add
            // one before rounding down to leave a blank 32 bytes (the length block with 0).
            mstore(0x40, and(
              add(add(end, iszero(add(length, mload(_preBytes)))), 31),
              not(31) // Round down to the nearest 32 bytes.
            ))
        }

        return tempBytes;
    }

    function concatStorage(bytes storage _preBytes, bytes memory _postBytes) internal {
        assembly {
            // Read the first 32 bytes of _preBytes storage, which is the length
            // of the array. (We don't need to use the offset into the slot
            // because arrays use the entire slot.)
            let fslot := sload(_preBytes.slot)
            // Arrays of 31 bytes or less have an even value in their slot,
            // while longer arrays have an odd value. The actual length is
            // the slot divided by two for odd values, and the lowest order
            // byte divided by two for even values.
            // If the slot is even, bitwise and the slot with 255 and divide by
            // two to get the length. If the slot is odd, bitwise and the slot
            // with -1 and divide by two.
            let slength := div(and(fslot, sub(mul(0x100, iszero(and(fslot, 1))), 1)), 2)
            let mlength := mload(_postBytes)
            let newlength := add(slength, mlength)
            // slength can contain both the length and contents of the array
            // if length < 32 bytes so let's prepare for that
            // v. http://solidity.readthedocs.io/en/latest/miscellaneous.html#layout-of-state-variables-in-storage
            switch add(lt(slength, 32), lt(newlength, 32))
            case 2 {
                // Since the new array still fits in the slot, we just need to
                // update the contents of the slot.
                // uint256(bytes_storage) = uint256(bytes_storage) + uint256(bytes_memory) + new_length
                sstore(
                    _preBytes.slot,
                    // all the modifications to the slot are inside this
                    // next block
                    add(
                        // we can just add to the slot contents because the
                        // bytes we want to change are the LSBs
                        fslot,
                        add(
                            mul(
                                div(
                                    // load the bytes from memory
                                    mload(add(_postBytes, 0x20)),
                                    // zero all bytes to the right
                                    exp(0x100, sub(32, mlength))
                                ),
                                // and now shift left the number of bytes to
                                // leave space for the length in the slot
                                exp(0x100, sub(32, newlength))
                            ),
                            // increase length by the double of the memory
                            // bytes length
                            mul(mlength, 2)
                        )
                    )
                )
            }
            case 1 {
                // The stored value fits in the slot, but the combined value
                // will exceed it.
                // get the keccak hash to get the contents of the array
                mstore(0x0, _preBytes.slot)
                let sc := add(keccak256(0x0, 0x20), div(slength, 32))

                // save new length
                sstore(_preBytes.slot, add(mul(newlength, 2), 1))

                // The contents of the _postBytes array start 32 bytes into
                // the structure. Our first read should obtain the `submod`
                // bytes that can fit into the unused space in the last word
                // of the stored array. To get this, we read 32 bytes starting
                // from `submod`, so the data we read overlaps with the array
                // contents by `submod` bytes. Masking the lowest-order
                // `submod` bytes allows us to add that value directly to the
                // stored value.

                let submod := sub(32, slength)
                let mc := add(_postBytes, submod)
                let end := add(_postBytes, mlength)
                let mask := sub(exp(0x100, submod), 1)

                sstore(
                    sc,
                    add(
                        and(
                            fslot,
                            0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff00
                        ),
                        and(mload(mc), mask)
                    )
                )

                for {
                    mc := add(mc, 0x20)
                    sc := add(sc, 1)
                } lt(mc, end) {
                    sc := add(sc, 1)
                    mc := add(mc, 0x20)
                } {
                    sstore(sc, mload(mc))
                }

                mask := exp(0x100, sub(mc, end))

                sstore(sc, mul(div(mload(mc), mask), mask))
            }
            default {
                // get the keccak hash to get the contents of the array
                mstore(0x0, _preBytes.slot)
                // Start copying to the last used word of the stored array.
                let sc := add(keccak256(0x0, 0x20), div(slength, 32))

                // save new length
                sstore(_preBytes.slot, add(mul(newlength, 2), 1))

                // Copy over the first `submod` bytes of the new data as in
                // case 1 above.
                let slengthmod := mod(slength, 32)
                let mlengthmod := mod(mlength, 32)
                let submod := sub(32, slengthmod)
                let mc := add(_postBytes, submod)
                let end := add(_postBytes, mlength)
                let mask := sub(exp(0x100, submod), 1)

                sstore(sc, add(sload(sc), and(mload(mc), mask)))

                for {
                    sc := add(sc, 1)
                    mc := add(mc, 0x20)
                } lt(mc, end) {
                    sc := add(sc, 1)
                    mc := add(mc, 0x20)
                } {
                    sstore(sc, mload(mc))
                }

                mask := exp(0x100, sub(mc, end))

                sstore(sc, mul(div(mload(mc), mask), mask))
            }
        }
    }

    function slice(
        bytes memory _bytes,
        uint256 _start,
        uint256 _length
    )
        internal
        pure
        returns (bytes memory)
    {
        require(_length + 31 >= _length, "slice_overflow");
        require(_bytes.length >= _start + _length, "slice_outOfBounds");

        bytes memory tempBytes;

        assembly {
            switch iszero(_length)
            case 0 {
                // Get a location of some free memory and store it in tempBytes as
                // Solidity does for memory variables.
                tempBytes := mload(0x40)

                // The first word of the slice result is potentially a partial
                // word read from the original array. To read it, we calculate
                // the length of that partial word and start copying that many
                // bytes into the array. The first word we copy will start with
                // data we don't care about, but the last `lengthmod` bytes will
                // land at the beginning of the contents of the new array. When
                // we're done copying, we overwrite the full first word with
                // the actual length of the slice.
                let lengthmod := and(_length, 31)

                // The multiplication in the next line is necessary
                // because when slicing multiples of 32 bytes (lengthmod == 0)
                // the following copy loop was copying the origin's length
                // and then ending prematurely not copying everything it should.
                let mc := add(add(tempBytes, lengthmod), mul(0x20, iszero(lengthmod)))
                let end := add(mc, _length)

                for {
                    // The multiplication in the next line has the same exact purpose
                    // as the one above.
                    let cc := add(add(add(_bytes, lengthmod), mul(0x20, iszero(lengthmod))), _start)
                } lt(mc, end) {
                    mc := add(mc, 0x20)
                    cc := add(cc, 0x20)
                } {
                    mstore(mc, mload(cc))
                }

                mstore(tempBytes, _length)

                //update free-memory pointer
                //allocating the array padded to 32 bytes like the compiler does now
                mstore(0x40, and(add(mc, 31), not(31)))
            }
            //if we want a zero-length slice let's just return a zero-length array
            default {
                tempBytes := mload(0x40)
                //zero out the 32 bytes slice we are about to return
                //we need to do it because Solidity does not garbage collect
                mstore(tempBytes, 0)

                mstore(0x40, add(tempBytes, 0x20))
            }
        }

        return tempBytes;
    }

    function toAddress(bytes memory _bytes, uint256 _start) internal pure returns (address) {
        require(_bytes.length >= _start + 20, "toAddress_outOfBounds");
        address tempAddress;

        assembly {
            tempAddress := div(mload(add(add(_bytes, 0x20), _start)), 0x1000000000000000000000000)
        }

        return tempAddress;
    }

    function toUint8(bytes memory _bytes, uint256 _start) internal pure returns (uint8) {
        require(_bytes.length >= _start + 1 , "toUint8_outOfBounds");
        uint8 tempUint;

        assembly {
            tempUint := mload(add(add(_bytes, 0x1), _start))
        }

        return tempUint;
    }

    function toUint16(bytes memory _bytes, uint256 _start) internal pure returns (uint16) {
        require(_bytes.length >= _start + 2, "toUint16_outOfBounds");
        uint16 tempUint;

        assembly {
            tempUint := mload(add(add(_bytes, 0x2), _start))
        }

        return tempUint;
    }

    function toUint32(bytes memory _bytes, uint256 _start) internal pure returns (uint32) {
        require(_bytes.length >= _start + 4, "toUint32_outOfBounds");
        uint32 tempUint;

        assembly {
            tempUint := mload(add(add(_bytes, 0x4), _start))
        }

        return tempUint;
    }

    function toUint64(bytes memory _bytes, uint256 _start) internal pure returns (uint64) {
        require(_bytes.length >= _start + 8, "toUint64_outOfBounds");
        uint64 tempUint;

        assembly {
            tempUint := mload(add(add(_bytes, 0x8), _start))
        }

        return tempUint;
    }

    function toUint96(bytes memory _bytes, uint256 _start) internal pure returns (uint96) {
        require(_bytes.length >= _start + 12, "toUint96_outOfBounds");
        uint96 tempUint;

        assembly {
            tempUint := mload(add(add(_bytes, 0xc), _start))
        }

        return tempUint;
    }

    function toUint128(bytes memory _bytes, uint256 _start) internal pure returns (uint128) {
        require(_bytes.length >= _start + 16, "toUint128_outOfBounds");
        uint128 tempUint;

        assembly {
            tempUint := mload(add(add(_bytes, 0x10), _start))
        }

        return tempUint;
    }

    function toUint256(bytes memory _bytes, uint256 _start) internal pure returns (uint256) {
        require(_bytes.length >= _start + 32, "toUint256_outOfBounds");
        uint256 tempUint;

        assembly {
            tempUint := mload(add(add(_bytes, 0x20), _start))
        }

        return tempUint;
    }

    function toBytes32(bytes memory _bytes, uint256 _start) internal pure returns (bytes32) {
        require(_bytes.length >= _start + 32, "toBytes32_outOfBounds");
        bytes32 tempBytes32;

        assembly {
            tempBytes32 := mload(add(add(_bytes, 0x20), _start))
        }

        return tempBytes32;
    }

    function equal(bytes memory _preBytes, bytes memory _postBytes) internal pure returns (bool) {
        bool success = true;

        assembly {
            let length := mload(_preBytes)

            // if lengths don't match the arrays are not equal
            switch eq(length, mload(_postBytes))
            case 1 {
                // cb is a circuit breaker in the for loop since there's
                //  no said feature for inline assembly loops
                // cb = 1 - don't breaker
                // cb = 0 - break
                let cb := 1

                let mc := add(_preBytes, 0x20)
                let end := add(mc, length)

                for {
                    let cc := add(_postBytes, 0x20)
                // the next line is the loop condition:
                // while(uint256(mc < end) + cb == 2)
                } eq(add(lt(mc, end), cb), 2) {
                    mc := add(mc, 0x20)
                    cc := add(cc, 0x20)
                } {
                    // if any of these checks fails then arrays are not equal
                    if iszero(eq(mload(mc), mload(cc))) {
                        // unsuccess:
                        success := 0
                        cb := 0
                    }
                }
            }
            default {
                // unsuccess:
                success := 0
            }
        }

        return success;
    }

    function equalStorage(
        bytes storage _preBytes,
        bytes memory _postBytes
    )
        internal
        view
        returns (bool)
    {
        bool success = true;

        assembly {
            // we know _preBytes_offset is 0
            let fslot := sload(_preBytes.slot)
            // Decode the length of the stored array like in concatStorage().
            let slength := div(and(fslot, sub(mul(0x100, iszero(and(fslot, 1))), 1)), 2)
            let mlength := mload(_postBytes)

            // if lengths don't match the arrays are not equal
            switch eq(slength, mlength)
            case 1 {
                // slength can contain both the length and contents of the array
                // if length < 32 bytes so let's prepare for that
                // v. http://solidity.readthedocs.io/en/latest/miscellaneous.html#layout-of-state-variables-in-storage
                if iszero(iszero(slength)) {
                    switch lt(slength, 32)
                    case 1 {
                        // blank the last byte which is the length
                        fslot := mul(div(fslot, 0x100), 0x100)

                        if iszero(eq(fslot, mload(add(_postBytes, 0x20)))) {
                            // unsuccess:
                            success := 0
                        }
                    }
                    default {
                        // cb is a circuit breaker in the for loop since there's
                        //  no said feature for inline assembly loops
                        // cb = 1 - don't breaker
                        // cb = 0 - break
                        let cb := 1

                        // get the keccak hash to get the contents of the array
                        mstore(0x0, _preBytes.slot)
                        let sc := keccak256(0x0, 0x20)

                        let mc := add(_postBytes, 0x20)
                        let end := add(mc, mlength)

                        // the next line is the loop condition:
                        // while(uint256(mc < end) + cb == 2)
                        for {} eq(add(lt(mc, end), cb), 2) {
                            sc := add(sc, 1)
                            mc := add(mc, 0x20)
                        } {
                            if iszero(eq(sload(sc), mload(mc))) {
                                // unsuccess:
                                success := 0
                                cb := 0
                            }
                        }
                    }
                }
            }
            default {
                // unsuccess:
                success := 0
            }
        }

        return success;
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "./IMessageTransmitterV2.sol";
import "./ITokenMinterV2.sol";

interface ITokenMessengerV2 {
	function localMessageTransmitter() external view returns (IMessageTransmitterV2);
	function localMinter() external view returns (ITokenMinterV2);

	function depositForBurn(
        uint256 amount,
        uint32 destinationDomain,
        bytes32 mintRecipient,
        address burnToken,
        bytes32 destinationCaller,
        uint256 maxFee,
        uint32 minFinalityThreshold
    ) external;

    function depositForBurnWithHook(
        uint256 amount,
        uint32 destinationDomain,
        bytes32 mintRecipient,
        address burnToken,
        bytes32 destinationCaller,
        uint256 maxFee,
        uint32 minFinalityThreshold,
        bytes calldata hookData
    ) external;
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/extensions/IERC20Permit.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in
 * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612].
 *
 * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by
 * presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't
 * need to send a transaction, and thus is not required to hold Ether at all.
 */
interface IERC20Permit {
    /**
     * @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens,
     * given ``owner``'s signed approval.
     *
     * IMPORTANT: The same issues {IERC20-approve} has related to transaction
     * ordering also apply here.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `deadline` must be a timestamp in the future.
     * - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner`
     * over the EIP712-formatted function arguments.
     * - the signature must use ``owner``'s current nonce (see {nonces}).
     *
     * For more information on the signature format, see the
     * https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP
     * section].
     */
    function permit(
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external;

    /**
     * @dev Returns the current nonce for `owner`. This value must be
     * included whenever a signature is generated for {permit}.
     *
     * Every successful call to {permit} increases ``owner``'s nonce by one. This
     * prevents a signature from being used multiple times.
     */
    function nonces(address owner) external view returns (uint256);

    /**
     * @dev Returns the domain separator used in the encoding of the signature for {permit}, as defined by {EIP712}.
     */
    // solhint-disable-next-line func-name-mixedcase
    function DOMAIN_SEPARATOR() external view returns (bytes32);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (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
     *
     * Furthermore, `isContract` will also return true if the target contract within
     * the same transaction is already scheduled for destruction by `SELFDESTRUCT`,
     * which only has an effect at the end of a transaction.
     * ====
     *
     * [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://consensys.net/diligence/blog/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/v0.8.0/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 functionCallWithValue(target, data, 0, "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");
        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResultFromTarget(target, 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) {
        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResultFromTarget(target, 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) {
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling
     * the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract.
     *
     * _Available since v4.8._
     */
    function verifyCallResultFromTarget(
        address target,
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        if (success) {
            if (returndata.length == 0) {
                // only check isContract if the call was successful and the return data is empty
                // otherwise we already know that it was a contract
                require(isContract(target), "Address: call to non-contract");
            }
            return returndata;
        } else {
            _revert(returndata, errorMessage);
        }
    }

    /**
     * @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason or 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 {
            _revert(returndata, errorMessage);
        }
    }

    function _revert(bytes memory returndata, string memory errorMessage) private pure {
        // 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
            /// @solidity memory-safe-assembly
            assembly {
                let returndata_size := mload(returndata)
                revert(add(32, returndata), returndata_size)
            }
        } else {
            revert(errorMessage);
        }
    }
}

/*
 * Copyright 2024 Circle Internet Group, Inc. All rights reserved.
 *
 * SPDX-License-Identifier: Apache-2.0
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
pragma solidity ^0.8.0;

import {IReceiverV2} from "./IReceiverV2.sol";
import {IRelayerV2} from "./IRelayerV2.sol";

/**
 * @title IMessageTransmitterV2
 * @notice Interface for V2 message transmitters, which both relay and receive messages.
 */
interface IMessageTransmitterV2 is IRelayerV2, IReceiverV2 {

}

/*
 * Copyright 2024 Circle Internet Group, Inc. All rights reserved.
 *
 * SPDX-License-Identifier: Apache-2.0
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
pragma solidity ^0.8.0;

import {ITokenMinter} from "../ITokenMinter.sol";

/**
 * @title ITokenMinterV2
 * @notice Interface for a minter of tokens that are mintable, burnable, and interchangeable
 * across domains.
 */
interface ITokenMinterV2 is ITokenMinter {
    /**
     * @notice Mints to multiple recipients amounts of tokens corresponding to the
     * given (`sourceDomain`, `burnToken`) pair.
     * @param sourceDomain Source domain where `burnToken` was burned.
     * @param burnToken Burned token address as bytes32.
     * @param recipientOne Address to receive `amountOne` of minted tokens
     * @param recipientTwo Address to receive `amountTwo` of minted tokens
     * @param amountOne Amount of tokens to mint to `recipientOne`
     * @param amountTwo Amount of tokens to mint to `recipientTwo`
     * @return mintToken Address of the token that was minted, corresponding to the (`sourceDomain`, `burnToken`) pair
     */
    function mint(
        uint32 sourceDomain,
        bytes32 burnToken,
        address recipientOne,
        address recipientTwo,
        uint256 amountOne,
        uint256 amountTwo
    ) external returns (address);
}

/*
 * Copyright 2024 Circle Internet Group, Inc. All rights reserved.
 *
 * SPDX-License-Identifier: Apache-2.0
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
pragma solidity ^0.8.0;

import {IReceiver} from "../IReceiver.sol";

/**
 * @title IReceiverV2
 * @notice Receives messages on the destination chain and forwards them to contracts implementing
 * IMessageHandlerV2.
 */
interface IReceiverV2 is IReceiver {

}

/*
 * Copyright 2024 Circle Internet Group, Inc. All rights reserved.
 *
 * SPDX-License-Identifier: Apache-2.0
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
pragma solidity ^0.8.0;

/**
 * @title IRelayerV2
 * @notice Sends messages from the source domain to the destination domain
 */
interface IRelayerV2 {
    /**
     * @notice Sends an outgoing message from the source domain.
     * @dev Emits a `MessageSent` event with message information.
     * WARNING: if the `destinationCaller` does not represent a valid address as bytes32, then it will not be possible
     * to broadcast the message on the destination domain. If set to bytes32(0), anyone will be able to broadcast it.
     * This is an advanced feature, and using bytes32(0) should be preferred for use cases where a specific destination caller is not required.
     * @param destinationDomain Domain of destination chain
     * @param recipient Address of message recipient on destination domain as bytes32
     * @param destinationCaller Allowed caller on destination domain (see above WARNING).
     * @param minFinalityThreshold Minimum finality threshold at which the message must be attested to.
     * @param messageBody Content of the message, as raw bytes
     */
    function sendMessage(
        uint32 destinationDomain,
        bytes32 recipient,
        bytes32 destinationCaller,
        uint32 minFinalityThreshold,
        bytes calldata messageBody
    ) external;
}

/*
 * Copyright (c) 2022, Circle Internet Financial Limited.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
pragma solidity ^0.8.0;

/**
 * @title ITokenMinter
 * @notice interface for minter of tokens that are mintable, burnable, and interchangeable
 * across domains.
 */
interface ITokenMinter {
	/**
	 * @notice Mints `amount` of local tokens corresponding to the
	 * given (`sourceDomain`, `burnToken`) pair, to `to` address.
	 * @dev reverts if the (`sourceDomain`, `burnToken`) pair does not
	 * map to a nonzero local token address. This mapping can be queried using
	 * getLocalToken().
	 * @param sourceDomain Source domain where `burnToken` was burned.
	 * @param burnToken Burned token address as bytes32.
	 * @param to Address to receive minted tokens, corresponding to `burnToken`,
	 * on this domain.
	 * @param amount Amount of tokens to mint. Must be less than or equal
	 * to the minterAllowance of this TokenMinter for given `_mintToken`.
	 * @return mintToken token minted.
	 */
	function mint(
		uint32 sourceDomain,
		bytes32 burnToken,
		address to,
		uint256 amount
	) external returns (address mintToken);

	/**
	 * @notice Burn tokens owned by this ITokenMinter.
	 * @param burnToken burnable token.
	 * @param amount amount of tokens to burn. Must be less than or equal to this ITokenMinter's
	 * account balance of the given `_burnToken`.
	 */
	function burn(address burnToken, uint256 amount) external;

	/**
	 * @notice Get the local token associated with the given remote domain and token.
	 * @param remoteDomain Remote domain
	 * @param remoteToken Remote token
	 * @return local token address
	 */
	function getLocalToken(uint32 remoteDomain, bytes32 remoteToken)
		external
		view
		returns (address);

	/**
	 * @notice Set the token controller of this ITokenMinter. Token controller
	 * is responsible for mapping local tokens to remote tokens, and managing
	 * token-specific limits
	 * @param newTokenController new token controller address
	 */
	function setTokenController(address newTokenController) external;
}

/*
 * Copyright (c) 2022, Circle Internet Financial Limited.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
pragma solidity ^0.8.0;

/**
 * @title IReceiver
 * @notice Receives messages on destination chain and forwards them to IMessageDestinationHandler
 */
interface IReceiver {
	/**
	 * @notice Receives an incoming message, validating the header and passing
	 * the body to application-specific handler.
	 * @param message The message raw bytes
	 * @param signature The message signature
	 * @return success bool, true if successful
	 */
	function receiveMessage(bytes calldata message, bytes calldata signature)
		external
		returns (bool success);
}

{
  "remappings": [
    "ds-test/=lib/openzeppelin-contracts/lib/forge-std/lib/ds-test/src/",
    "erc4626-tests/=lib/openzeppelin-contracts/lib/erc4626-tests/",
    "forge-std/=lib/forge-std/src/",
    "openzeppelin-contracts/=lib/openzeppelin-contracts/",
    "openzeppelin/=lib/openzeppelin-contracts/contracts/",
    "@openzeppelin/=lib/openzeppelin-contracts/",
    "ExcessivelySafeCall/=lib/ExcessivelySafeCall/src/"
  ],
  "optimizer": {
    "enabled": true,
    "runs": 1000
  },
  "metadata": {
    "useLiteralContent": false,
    "bytecodeHash": "ipfs",
    "appendCBOR": true
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "evmVersion": "cancun",
  "viaIR": false,
  "libraries": {}
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[{"internalType":"address","name":"_cctpTokenMessengerV2","type":"address"},{"internalType":"address","name":"_feeManager","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[],"name":"AlreadySet","type":"error"},{"inputs":[],"name":"CallerNotSet","type":"error"},{"inputs":[],"name":"CctpReceiveFailed","type":"error"},{"inputs":[],"name":"DeadlineViolation","type":"error"},{"inputs":[],"name":"EthTransferFailed","type":"error"},{"inputs":[],"name":"InvalidAddress","type":"error"},{"inputs":[],"name":"InvalidAmountOut","type":"error"},{"inputs":[],"name":"InvalidGasDrop","type":"error"},{"inputs":[],"name":"InvalidMintRecipient","type":"error"},{"inputs":[],"name":"InvalidPayload","type":"error"},{"inputs":[],"name":"InvalidPayloadType","type":"error"},{"inputs":[],"name":"InvalidRedeemFee","type":"error"},{"inputs":[],"name":"InvalidRefundFee","type":"error"},{"inputs":[],"name":"MintRecipientNotSet","type":"error"},{"inputs":[],"name":"Paused","type":"error"},{"inputs":[],"name":"Unauthorized","type":"error"},{"inputs":[],"name":"UnauthorizedMsgSender","type":"error"},{"inputs":[],"name":"UnauthorizedSwapProtocol","type":"error"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint32","name":"sourceDomain","type":"uint32"},{"indexed":false,"internalType":"bytes32","name":"sourceNonce","type":"bytes32"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"OrderFulfilled","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint32","name":"sourceDomain","type":"uint32"},{"indexed":false,"internalType":"bytes32","name":"sourceNonce","type":"bytes32"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"OrderRefunded","type":"event"},{"inputs":[{"internalType":"address","name":"tokenIn","type":"address"},{"internalType":"uint256","name":"amountIn","type":"uint256"},{"internalType":"uint64","name":"redeemFee","type":"uint64"},{"internalType":"uint256","name":"circleMaxFee","type":"uint256"},{"internalType":"uint64","name":"gasDrop","type":"uint64"},{"internalType":"bytes32","name":"destAddr","type":"bytes32"},{"internalType":"uint32","name":"destDomain","type":"uint32"},{"internalType":"bytes32","name":"referrerAddress","type":"bytes32"},{"internalType":"uint8","name":"referrerBps","type":"uint8"},{"internalType":"uint8","name":"payloadType","type":"uint8"},{"internalType":"uint32","name":"minFinalityThreshold","type":"uint32"},{"internalType":"bytes","name":"customPayload","type":"bytes"}],"name":"bridge","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"cctpTokenMessengerV2","outputs":[{"internalType":"contract ITokenMessengerV2","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"newGuardian","type":"address"}],"name":"changeGuardian","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"claimGuardian","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"tokenIn","type":"address"},{"internalType":"uint256","name":"amountIn","type":"uint256"},{"internalType":"uint256","name":"circleMaxFee","type":"uint256"},{"internalType":"uint32","name":"destDomain","type":"uint32"},{"internalType":"uint32","name":"minFinalityThreshold","type":"uint32"},{"components":[{"internalType":"uint8","name":"payloadType","type":"uint8"},{"internalType":"bytes32","name":"destAddr","type":"bytes32"},{"internalType":"bytes32","name":"tokenOut","type":"bytes32"},{"internalType":"uint64","name":"amountOutMin","type":"uint64"},{"internalType":"uint64","name":"gasDrop","type":"uint64"},{"internalType":"uint64","name":"redeemFee","type":"uint64"},{"internalType":"uint64","name":"refundFee","type":"uint64"},{"internalType":"uint64","name":"deadline","type":"uint64"},{"internalType":"bytes32","name":"referrerAddr","type":"bytes32"},{"internalType":"uint8","name":"referrerBps","type":"uint8"}],"internalType":"struct FastMCTP.OrderPayload","name":"orderPayload","type":"tuple"}],"name":"createOrder","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint32","name":"","type":"uint32"}],"name":"domainToCaller","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"feeManager","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes","name":"cctpMsg","type":"bytes"},{"internalType":"bytes","name":"cctpSigs","type":"bytes"},{"internalType":"address","name":"swapProtocol","type":"address"},{"internalType":"bytes","name":"swapData","type":"bytes"}],"name":"fulfillOrder","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"guardian","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"name":"keyToMintRecipient","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"nextGuardian","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"paused","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes","name":"cctpMsg","type":"bytes"},{"internalType":"bytes","name":"cctpSigs","type":"bytes"}],"name":"redeem","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"bytes","name":"cctpMsg","type":"bytes"},{"internalType":"bytes","name":"cctpSigs","type":"bytes"}],"name":"refund","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"address payable","name":"to","type":"address"}],"name":"rescueEth","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes","name":"cctpMsg","type":"bytes"},{"internalType":"bytes","name":"cctpSigs","type":"bytes"}],"name":"rescueRedeem","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"address","name":"to","type":"address"}],"name":"rescueToken","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint32","name":"domain","type":"uint32"},{"internalType":"bytes32","name":"caller","type":"bytes32"}],"name":"setDomainCallers","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_feeManager","type":"address"}],"name":"setFeeManager","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint32","name":"destDomain","type":"uint32"},{"internalType":"address","name":"tokenIn","type":"address"},{"internalType":"bytes32","name":"mintRecipient","type":"bytes32"}],"name":"setMintRecipient","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bool","name":"_pause","type":"bool"}],"name":"setPause","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"sender","type":"address"},{"internalType":"bool","name":"isWhitelisted","type":"bool"}],"name":"setWhitelistedMsgSenders","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"protocol","type":"address"},{"internalType":"bool","name":"isWhitelisted","type":"bool"}],"name":"setWhitelistedSwapProtocols","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"whitelistedMsgSenders","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"whitelistedSwapProtocols","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"stateMutability":"payable","type":"receive"}]

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00000000000000000000000028b5a0e9c621a5badaa536219b3a228c8168cf5d000000000000000000000000598400ba0d8ba9c3b57ad424a68183f1d17c7e56

-----Decoded View---------------
Arg [0] : _cctpTokenMessengerV2 (address): 0x28b5a0e9C621a5BadaA536219b3a228C8168cf5d
Arg [1] : _feeManager (address): 0x598400bA0d8BA9C3b57ad424A68183f1D17c7e56

-----Encoded View---------------
2 Constructor Arguments found :
Arg [0] : 00000000000000000000000028b5a0e9c621a5badaa536219b3a228c8168cf5d
Arg [1] : 000000000000000000000000598400ba0d8ba9c3b57ad424a68183f1d17c7e56