Merge pull request #128 from zerodevapp/feat/emitIdentifierValidator

feat: emitIdentifierValidator

Author: leekt

src/validator/EmitIdentifierValidator.sol

@@ -0,0 +1,33 @@
+// SPDX-License-Identifier: MIT
+
+pragma solidity ^0.8.0;
+
+import {IValidator} from "../interfaces/IERC7579Modules.sol";
+import {PackedUserOperation} from "../interfaces/PackedUserOperation.sol";
+import {SIG_VALIDATION_FAILED_UINT, MODULE_TYPE_VALIDATOR, ERC1271_INVALID} from "../types/Constants.sol";
+
+contract EmitIdentifierValidator is IValidator {
+    event IdentifierEmitted(bytes id, address indexed kernel);
+
+    function onInstall(bytes calldata _data) external payable override {
+        emit IdentifierEmitted(_data, msg.sender);
+    }
+
+    function onUninstall(bytes calldata) external payable override {}
+
+    function isModuleType(uint256 typeID) external pure override returns (bool) {
+        return typeID == MODULE_TYPE_VALIDATOR;
+    }
+
+    function isInitialized(address) external pure override returns (bool) {
+        return true;
+    }
+
+    function validateUserOp(PackedUserOperation calldata, bytes32) external payable override returns (uint256) {
+        return SIG_VALIDATION_FAILED_UINT;
+    }
+
+    function isValidSignatureWithSender(address, bytes32, bytes calldata) external pure override returns (bytes4) {
+        return ERC1271_INVALID;
+    }
+}