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Ownable liquidator contract #37

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Ownable liquidator contract #37

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fab9790
add optional owner to Liquidator
dglowinski Sep 3, 2025
5ca874a
update deploy liquidator script
dglowinski Sep 3, 2025
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7 changes: 4 additions & 3 deletions contracts/DeployLiquidator.sol
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Original file line number Diff line number Diff line change
Expand Up @@ -13,19 +13,20 @@ contract DeployLiquidator is Script {
function run() public {
uint256 deployerPrivateKey = vm.envUint("LIQUIDATOR_PRIVATE_KEY");

address swapperAddress = 0x2Bba09866b6F1025258542478C39720A09B728bF;
address swapperAddress = 0xF1dE0e31C107A0cBFC3DB5F65eB28bB7ea7143dE;
address swapVerifierAddress = 0xae26485ACDDeFd486Fe9ad7C2b34169d360737c7;
address evcAddress = 0x0C9a3dd6b8F28529d72d7f9cE918D493519EE383;
address pyth = 0x4305FB66699C3B2702D4d05CF36551390A4c69C6;
address owner = 0x8cbB534874bab83e44a7325973D2F04493359dF8;

address deployer = vm.addr(deployerPrivateKey);
// address deployer = vm.addr(deployerPrivateKey);
vm.startBroadcast(deployerPrivateKey);

uint256 beforeGas = gasleft();
console2.log("Gas before: ", beforeGas);
console2.log("Gas price: ", tx.gasprice);

Liquidator liquidator = new Liquidator(deployer, swapperAddress, swapVerifierAddress, evcAddress, pyth);
Liquidator liquidator = new Liquidator(owner, swapperAddress, swapVerifierAddress, evcAddress, pyth);
uint256 afterGas = gasleft();
console2.log("Gas after: ", afterGas);

Expand Down
26 changes: 23 additions & 3 deletions contracts/Liquidator.sol
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Original file line number Diff line number Diff line change
Expand Up @@ -23,7 +23,9 @@ contract Liquidator {

error Unauthorized();
error LessThanExpectedCollateralReceived();
error EmptyError();

/// @dev If _owner == address(0), the contract is not owned (callable by anyone)
constructor(address _owner, address _swapperAddress, address _swapVerifierAddress, address _evcAddress, address _pythAddress) {
owner = _owner;
swapperAddress = _swapperAddress;
Expand All @@ -36,7 +38,7 @@ contract Liquidator {
}

modifier onlyOwner() {
require(msg.sender == owner, "Unauthorized");
require(owner == address(0) || msg.sender == owner, "Unauthorized");
_;
}

Expand All @@ -60,7 +62,7 @@ contract Liquidator {
uint256 amountCollaterallSeized
);

function liquidateSingleCollateral(LiquidationParams calldata params, bytes[] calldata swapperData) external returns (bool success) {
function liquidateSingleCollateral(LiquidationParams calldata params, bytes[] calldata swapperData) external onlyOwner returns (bool success) {
bytes[] memory multicallItems = new bytes[](swapperData.length + 2);

for (uint256 i = 0; i < swapperData.length; i++){
Expand Down Expand Up @@ -156,7 +158,7 @@ contract Liquidator {
return true;
}

function liquidateSingleCollateralWithPythOracle(LiquidationParams calldata params, bytes[] calldata swapperData, bytes[] calldata pythUpdateData) external payable returns (bool success) {
function liquidateSingleCollateralWithPythOracle(LiquidationParams calldata params, bytes[] calldata swapperData, bytes[] calldata pythUpdateData) external payable onlyOwner returns (bool success) {
bytes[] memory multicallItems = new bytes[](swapperData.length + 2);

for (uint256 i = 0; i < swapperData.length; i++){
Expand Down Expand Up @@ -260,6 +262,7 @@ contract Liquidator {
// TODO: implement this as an operator so debt can be seized directly by whitelisted liquidators
function liquidateFromExistingCollateralPosition(LiquidationParams calldata params)
external
onlyOwner
returns (bool success)
{
IEVC.BatchItem[] memory batchItems = new IEVC.BatchItem[](3);
Expand Down Expand Up @@ -359,4 +362,21 @@ contract Liquidator {

return (maxRepay, seizedCollateral);
}

/// @dev Allow arbitrary call when the Liquidator is owned. Can be used to e.g. sweep from owned Swapper
function ownerCall(address target, bytes calldata payload) external payable onlyOwner {
if (owner != address(0)) {
(bool success, bytes memory data) = target.call{value: msg.value}(payload);
if (!success) revertBytes(data);
}
}

function revertBytes(bytes memory errMsg) internal pure {
if (errMsg.length != 0) {
assembly {
revert(add(32, errMsg), mload(errMsg))
}
}
revert EmptyError();
}
}