Contract Name:
StargateAdapter
Contract Source Code:
// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity 0.8.10;
import "../interfaces/IRouteProcessor.sol";
import "../interfaces/IWETH.sol";
import "openzeppelin-contracts/contracts/token/ERC20/utils/SafeERC20.sol";
import "../interfaces/ISushiXSwapV2Adapter.sol";
import "../interfaces/stargate/IStargateRouter.sol";
import "../interfaces/stargate/IStargateReceiver.sol";
import "../interfaces/stargate/IStargateWidget.sol";
import "../interfaces/stargate/IStargateEthVault.sol";
contract StargateAdapter is ISushiXSwapV2Adapter, IStargateReceiver {
using SafeERC20 for IERC20;
IStargateRouter public immutable stargateComposer;
IStargateWidget public immutable stargateWidget;
address public immutable sgeth;
IRouteProcessor public immutable rp;
IWETH public immutable weth;
address constant NATIVE_ADDRESS =
0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;
struct StargateTeleportParams {
uint16 dstChainId; // stargate dst chain id
address token; // token getting bridged
uint256 srcPoolId; // stargate src pool id
uint256 dstPoolId; // stargate dst pool id
uint256 amount; // amount to bridge
uint256 amountMin; // amount to bridge minimum
uint256 dustAmount; // native token to be received on dst chain
address receiver; // detination address for sgReceive
address to; // address for fallback tranfers on sgReceive
uint256 gas; // extra gas to be sent for dst chain operations
}
error InsufficientGas();
error NotStargateComposer();
error RpSentNativeIn();
constructor(
address _stargateComposer,
address _stargateWidget,
address _sgeth,
address _rp,
address _weth
) {
stargateComposer = IStargateRouter(_stargateComposer);
stargateWidget = IStargateWidget(_stargateWidget);
sgeth = _sgeth;
rp = IRouteProcessor(_rp);
weth = IWETH(_weth);
}
/// @inheritdoc ISushiXSwapV2Adapter
function swap(
uint256 _amountBridged,
bytes calldata _swapData,
address _token,
bytes calldata _payloadData
) external payable override {
IRouteProcessor.RouteProcessorData memory rpd = abi.decode(
_swapData,
(IRouteProcessor.RouteProcessorData)
);
// send tokens to RP
if (_token != sgeth) {
IERC20(rpd.tokenIn).safeTransfer(address(rp), _amountBridged);
}
rp.processRoute{value: _token == sgeth ? _amountBridged : 0}(
rpd.tokenIn,
_amountBridged,
rpd.tokenOut,
rpd.amountOutMin,
rpd.to,
rpd.route
);
// tokens should be sent via rp
if (_payloadData.length > 0) {
PayloadData memory pd = abi.decode(_payloadData, (PayloadData));
try
IPayloadExecutor(pd.target).onPayloadReceive{gas: pd.gasLimit}(
pd.targetData
)
{} catch (bytes memory) {
revert();
}
}
}
/// @inheritdoc ISushiXSwapV2Adapter
function executePayload(
uint256 _amountBridged,
bytes calldata _payloadData,
address _token
) external payable override {
PayloadData memory pd = abi.decode(_payloadData, (PayloadData));
if (_token != sgeth) {
IERC20(_token).safeTransfer(pd.target, _amountBridged);
}
IPayloadExecutor(pd.target).onPayloadReceive{
gas: pd.gasLimit,
value: _token == sgeth ? _amountBridged : 0
}(pd.targetData);
}
/// @notice Get the fees to be paid in native token for the swap
/// @param _dstChainId stargate dst chainId
/// @param _functionType stargate Function type 1 for swap.
/// See more at https://stargateprotocol.gitbook.io/stargate/developers/function-types
/// @param _receiver receiver on the dst chain
/// @param _gas extra gas being sent
/// @param _dustAmount dust amount to be received at the dst chain
/// @param _payload payload being sent at the dst chain
function getFee(
uint16 _dstChainId,
uint8 _functionType,
address _receiver,
uint256 _gas,
uint256 _dustAmount,
bytes memory _payload
) external view returns (uint256 a, uint256 b) {
(a, b) = stargateComposer.quoteLayerZeroFee(
_dstChainId,
_functionType,
abi.encodePacked(_receiver),
abi.encode(_payload),
IStargateRouter.lzTxObj(
_gas,
_dustAmount,
abi.encodePacked(_receiver)
)
);
}
/// @inheritdoc ISushiXSwapV2Adapter
function adapterBridge(
bytes calldata _adapterData,
address _refundAddress,
bytes calldata _swapData,
bytes calldata _payloadData
) external payable override {
StargateTeleportParams memory params = abi.decode(
_adapterData,
(StargateTeleportParams)
);
if (params.token == NATIVE_ADDRESS) {
// RP should not send native in, since we won't know the exact amount to bridge
if (params.amount == 0) revert RpSentNativeIn();
} else if (params.token == address(weth)) {
// this case is for when rp sends weth in
if (params.amount == 0)
params.amount = weth.balanceOf(address(this));
weth.withdraw(params.amount);
} else {
if (params.amount == 0)
params.amount = IERC20(params.token).balanceOf(address(this));
IERC20(params.token).safeApprove(
address(stargateComposer),
params.amount
);
}
bytes memory payload = bytes("");
if (_swapData.length > 0 || _payloadData.length > 0) {
/// @dev dst gas should be more than 100k
if (params.gas < 100000) revert InsufficientGas();
payload = abi.encode(params.to, _swapData, _payloadData);
}
stargateComposer.swap{value: address(this).balance}(
params.dstChainId,
params.srcPoolId,
params.dstPoolId,
payable(_refundAddress), // refund address
params.amount,
params.amountMin,
IStargateRouter.lzTxObj(
params.gas,
params.dustAmount,
abi.encodePacked(params.receiver)
),
abi.encodePacked(params.receiver),
payload
);
stargateWidget.partnerSwap(0x0001);
// reset approval since amounts can truncate sometimes
if (params.token != NATIVE_ADDRESS)
IERC20(params.token).safeApprove(
address(stargateComposer),
0
);
}
/// @notice Receiver function on dst chain
/// @param _token bridge token received
/// @param amountLD amount received
/// @param payload ABI-Encoded data received from src chain
function sgReceive(
uint16,
bytes memory,
uint256,
address _token,
uint256 amountLD,
bytes memory payload
) external {
uint256 gasLeft = gasleft();
if (msg.sender != address(stargateComposer))
revert NotStargateComposer();
(address to, bytes memory _swapData, bytes memory _payloadData) = abi
.decode(payload, (address, bytes, bytes));
uint256 reserveGas = 100000;
if (gasLeft < reserveGas) {
if (_token != sgeth) {
IERC20(_token).safeTransfer(to, amountLD);
}
/// @dev transfer any native token received as dust to the to address
if (address(this).balance > 0)
to.call{value: (address(this).balance)}("");
return;
}
// 100000 -> exit gas
uint256 limit = gasLeft - reserveGas;
if (_swapData.length > 0) {
try
ISushiXSwapV2Adapter(address(this)).swap{gas: limit}(
amountLD,
_swapData,
_token,
_payloadData
)
{} catch (bytes memory) {}
} else if (_payloadData.length > 0) {
try
ISushiXSwapV2Adapter(address(this)).executePayload{gas: limit}(
amountLD,
_payloadData,
_token
)
{} catch (bytes memory) {}
} else {}
if (IERC20(_token).balanceOf(address(this)) > 0 && _token != sgeth)
IERC20(_token).safeTransfer(
to,
IERC20(_token).balanceOf(address(this))
);
/// @dev transfer any native token received as dust to the to address
if (address(this).balance > 0)
to.call{value: (address(this).balance)}("");
}
/// @inheritdoc ISushiXSwapV2Adapter
function sendMessage(bytes calldata _adapterData) external {
(_adapterData);
revert();
}
receive() external payable {}
}
// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity 0.8.10;
interface IRouteProcessor {
struct RouteProcessorData {
address tokenIn;
uint256 amountIn;
address tokenOut;
uint256 amountOutMin;
address to;
bytes route;
}
/// @notice Process a swap with passed route on RouteProcessor
/// @param tokenIn The address of the token to swap from
/// @param amountIn The amount of token to swap from
/// @param tokenOut The address of the token to swap to
/// @param amountOutMin The minimum amount of token to receive
/// @param to The address to send the swapped token to
/// @param route The route to use for the swap
function processRoute(
address tokenIn,
uint256 amountIn,
address tokenOut,
uint256 amountOutMin,
address to,
bytes memory route
) external payable returns (uint256 amountOut);
}
// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity 0.8.10;
interface IWETH {
function deposit() external payable;
function transfer(address to, uint256 value) external returns (bool);
function withdraw(uint256) external;
function balanceOf(address account) external view returns (uint256);
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (token/ERC20/utils/SafeERC20.sol)
pragma solidity ^0.8.0;
import "../IERC20.sol";
import "../extensions/draft-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;
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));
}
}
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");
if (returndata.length > 0) {
// Return data is optional
require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
}
}
}
// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity 0.8.10;
import "./IPayloadExecutor.sol";
interface ISushiXSwapV2Adapter {
/// @dev Most adapters will implement their own struct for the adapter, but this can be used for generic adapters
struct BridgeParamsAdapter {
address tokenIn;
uint256 amountIn;
address to;
bytes adapterData;
}
struct PayloadData {
address target;
uint256 gasLimit;
bytes targetData;
}
/// @notice Perform a swap after post bridging
/// @param _amountBridged The amount of tokens bridged
/// @param _swapData The swap data to pass to RouteProcessor
/// @param _token The address of the token to swap
/// @param _payloadData The payload data to pass to payload executor
function swap(
uint256 _amountBridged,
bytes calldata _swapData,
address _token,
bytes calldata _payloadData
) external payable;
/// @notice Execute a payload after bridging - w/o pre-swapping
/// @param _amountBridged The amount of tokens bridged
/// @param _payloadData The payload data to pass to payload executor
/// @param _token The address of the token to swap
function executePayload(
uint256 _amountBridged,
bytes calldata _payloadData,
address _token
) external payable;
/// @notice Where the actual bridging is executed from on adapter
/// @param _adapterData The adapter data to pass to adapter
/// @param _swapDataPayload The swap data payload to pass through bridge
/// @param _payloadData The payload data to pass to pass through bridge
function adapterBridge(
bytes calldata _adapterData,
address _refundAddress,
bytes calldata _swapDataPayload,
bytes calldata _payloadData
) external payable;
/// @notice Where the actual messaging is executed from on adapter
/// @param _adapterData The adapter data to pass to adapter
function sendMessage(bytes calldata _adapterData) external;
}
// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.10;
interface IStargateRouter {
struct lzTxObj {
uint256 dstGasForCall;
uint256 dstNativeAmount;
bytes dstNativeAddr;
}
function swap(
uint16 _dstChainId,
uint256 _srcPoolId,
uint256 _dstPoolId,
address payable _refundAddress,
uint256 _amountLD,
uint256 _minAmountLD,
lzTxObj memory _lzTxParams,
bytes calldata _to,
bytes calldata _payload
) external payable;
function quoteLayerZeroFee(
uint16 _dstChainId,
uint8 _functionType,
bytes calldata _toAddress,
bytes calldata _transferAndCallPayload,
lzTxObj memory _lzTxParams
) external view returns (uint256, uint256);
}
// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.10;
interface IStargateReceiver {
function sgReceive(
uint16 _chainId,
bytes memory _srcAddress,
uint256 _nonce,
address _token,
uint256 amountLD,
bytes memory payload
) external;
}
// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.10;
interface IStargateWidget {
function partnerSwap(bytes2 _partnerId) external;
}
// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.10;
interface IStargateEthVault {
function deposit() external payable;
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (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 v4.4.1 (token/ERC20/extensions/draft-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 v4.8.0) (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 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);
}
}
}
// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity 0.8.10;
interface IPayloadExecutor {
/// @notice Execute a payload
/// @param _data The data to pass to payload executor
function onPayloadReceive(bytes memory _data) external payable;
}
