Add BridgedGovernor

.gitignore

@@ -1,3 +1,3 @@
-node_modules
 /out
 /cache
+/broadcast

.gitmodules

@@ -7,3 +7,6 @@
 [submodule "lib/chainlink"]
 	path = lib/chainlink
 	url = https://github.com/smartcontractkit/chainlink
+[submodule "lib/LayerZero-v2"]
+	path = lib/LayerZero-v2
+	url = https://github.com/LayerZero-Labs/LayerZero-v2

foundry.toml

@@ -4,6 +4,7 @@ evm_version = 'shanghai'
 optimizer_runs = 7_700
 verbosity = 1
 fuzz_runs = 5
+script = 'scripts'
 [fmt]
 line_length = 100
 [fuzz]

remappings.txt

@@ -2,3 +2,4 @@ ds-test/=lib/forge-std/lib/ds-test/src/
 forge-std/=lib/forge-std/src/
 openzeppelin-contracts/=lib/openzeppelin-contracts/contracts/
 chainlink/=lib/chainlink/contracts/src/v0.8/
+layer-zero-v2/=lib/LayerZero-v2/

scripts/DeployBridgedGovernor.s.sol

@@ -0,0 +1,205 @@
+// SPDX-License-Identifier: GPL-3.0-only
+pragma solidity ^0.8.20;
+
+import {console, Script} from "forge-std/Script.sol";
+import {ExecutorOptions} from "layer-zero-v2/protocol/contracts/messagelib/libs/ExecutorOptions.sol";
+// import {OptionsBuilder} from "layer-zero-v2/oapp/contracts/oapp/libs/OptionsBuilder.sol";
+import {
+    ILayerZeroEndpointV2,
+    IMessageLibManager,
+    MessagingParams,
+    MessagingReceipt
+} from "layer-zero-v2/protocol/contracts/interfaces/ILayerZeroEndpointV2.sol";
+import {SetConfigParam} from "layer-zero-v2/protocol/contracts/interfaces/IMessageLibManager.sol";
+import {Constant} from "layer-zero-v2/messagelib/test/util/Constant.sol";
+import {Strings} from "openzeppelin-contracts/utils/Strings.sol";
+import {BridgedGovernor, BridgedGovernorProxy, Call} from "src/BridgedGovernor.sol";
+
+// Taken from layer-zero-v2/messagelib/contracts/uln/UlnBase.sol
+struct UlnConfig {
+    uint64 confirmations;
+    uint8 requiredDVNCount;
+    uint8 optionalDVNCount;
+    uint8 optionalDVNThreshold;
+    address[] requiredDVNs;
+    address[] optionalDVNs;
+}
+
+uint256 constant SEPOLIA_CHAIN_ID = 11155111;
+uint256 constant MUMBAI_CHAIN_ID = 80001;
+
+uint256 constant NO_GRACE_PERIOD = 0;
+
+// Taken from https://docs.layerzero.network/v2/developers/evm/technical-reference/endpoints
+address constant SEPOLIA_ENDPOINT = 0x6EDCE65403992e310A62460808c4b910D972f10f;
+uint32 constant SEPOLIA_EID = 40161;
+address constant MUMBAI_ENDPOINT = 0x6EDCE65403992e310A62460808c4b910D972f10f;
+uint32 constant MUMBAI_EID = 40109;
+
+// Taken from https://docs.layerzero.network/v2/developers/evm/technical-reference/messagelibs
+address constant MUMBAI_RECEIVE_ULN_302 = 0xfa4Fbda8E809150eE1676ce675AC746Beb9aF379;
+address constant SEPOLIA_SEND_ULN_302 = 0xcc1ae8Cf5D3904Cef3360A9532B477529b177cCE;
+
+// Taken from https://docs.layerzero.network/v2/developers/evm/technical-reference/dvn-addresses
+address constant SEPOLIA_LAYER_ZERO_LABS_DVN = 0x8eebf8b423B73bFCa51a1Db4B7354AA0bFCA9193;
+address constant MUMBAI_LAYER_ZERO_LABS_DVN = 0x67a822F55C5F6E439550b9C4EA39E406480a40f3;
+address constant SEPOLIA_BWARE_LABS_DVN = 0xCA7a736be0Fe968A33Af62033B8b36D491f7999B;
+address constant MUMBAI_BWARE_LABS_DVN = 0x1cf01d5042d1ae231F918a2645f2762d663476E7;
+
+function requireSorted(address[] memory addresses) pure {
+    for (uint256 i = 1; i < addresses.length; i++) {
+        require(uint160(addresses[i - 1]) < uint160(addresses[i]), "Addresses not sorted");
+    }
+}
+
+function messageOptions(uint128 gas) pure returns (bytes memory) {
+    uint16 optionsType = 3;
+    return abi.encodePacked(optionsType, executorGasOption(gas), executorOrderedOption());
+}
+
+function executorGasOption(uint128 gas) pure returns (bytes memory) {
+    bytes memory payload = ExecutorOptions.encodeLzReceiveOption(gas, 0);
+    return executorOption(ExecutorOptions.OPTION_TYPE_LZRECEIVE, payload);
+}
+
+function executorOrderedOption() pure returns (bytes memory) {
+    return executorOption(ExecutorOptions.OPTION_TYPE_ORDERED_EXECUTION, "");
+}
+
+function executorOption(uint8 optionType, bytes memory payload) pure returns (bytes memory) {
+    uint16 length = uint16(1 + payload.length);
+    return abi.encodePacked(ExecutorOptions.WORKER_ID, length, optionType, payload);
+}
+
+function addressToBytes32(address addr) pure returns (bytes32) {
+    return bytes32(uint256(uint160(addr)));
+}
+
+// forge script scripts/DeployBridgedGovernor.s.sol:ConfigureOnSepolia $WALLET_ARGS -f "$ETH_RPC_URL"
+
+contract ConfigureOnSepolia is Script {
+    function run() public {
+        require(block.chainid == SEPOLIA_CHAIN_ID, "Must be run on Sepolia");
+
+        address[] memory optionalDVNs = new address[](2);
+        optionalDVNs[0] = SEPOLIA_LAYER_ZERO_LABS_DVN;
+        optionalDVNs[1] = SEPOLIA_BWARE_LABS_DVN;
+        requireSorted(optionalDVNs);
+
+        SetConfigParam[] memory params = new SetConfigParam[](1);
+        params[0] = SetConfigParam({
+            eid: MUMBAI_EID,
+            configType: Constant.CONFIG_TYPE_ULN,
+            config: abi.encode(
+                UlnConfig({
+                    confirmations: 2,
+                    requiredDVNCount: Constant.NIL_DVN_COUNT,
+                    optionalDVNCount: uint8(optionalDVNs.length),
+                    optionalDVNThreshold: 1,
+                    requiredDVNs: new address[](0),
+                    optionalDVNs: optionalDVNs
+                })
+            )
+        });
+
+        vm.startBroadcast();
+        ILayerZeroEndpointV2 endpoint = ILayerZeroEndpointV2(SEPOLIA_ENDPOINT);
+        endpoint.setSendLibrary(msg.sender, MUMBAI_EID, SEPOLIA_SEND_ULN_302);
+        endpoint.setConfig(msg.sender, SEPOLIA_SEND_ULN_302, params);
+        vm.stopBroadcast();
+    }
+}
+
+// forge script scripts/DeployBridgedGovernor.s.sol:DeployToMumbai $WALLET_ARGS -f "$ETH_RPC_URL"
+
+contract DeployToMumbai is Script {
+    function run() public {
+        require(block.chainid == MUMBAI_CHAIN_ID, "Must be run on Polygon Mumbai");
+
+        address[] memory optionalDVNs = new address[](2);
+        optionalDVNs[0] = MUMBAI_BWARE_LABS_DVN;
+        optionalDVNs[1] = MUMBAI_LAYER_ZERO_LABS_DVN;
+        requireSorted(optionalDVNs);
+
+        SetConfigParam[] memory params = new SetConfigParam[](1);
+        params[0] = SetConfigParam({
+            eid: SEPOLIA_EID,
+            configType: Constant.CONFIG_TYPE_ULN,
+            config: abi.encode(
+                UlnConfig({
+                    confirmations: 2,
+                    requiredDVNCount: Constant.NIL_DVN_COUNT,
+                    optionalDVNCount: uint8(optionalDVNs.length),
+                    optionalDVNThreshold: 1,
+                    requiredDVNs: new address[](0),
+                    optionalDVNs: optionalDVNs
+                })
+            )
+        });
+
+        address governor = vm.computeCreateAddress(msg.sender, vm.getNonce(msg.sender) + 1);
+        Call[] memory calls = new Call[](2);
+        calls[0] = Call({
+            target: MUMBAI_ENDPOINT,
+            data: abi.encodeWithSelector(
+                IMessageLibManager.setReceiveLibrary.selector,
+                governor,
+                SEPOLIA_EID,
+                MUMBAI_RECEIVE_ULN_302,
+                NO_GRACE_PERIOD
+            ),
+            value: 0
+        });
+        calls[1] = Call({
+            target: MUMBAI_ENDPOINT,
+            data: abi.encodeWithSelector(
+                IMessageLibManager.setConfig.selector, governor, MUMBAI_RECEIVE_ULN_302, params
+            ),
+            value: 0
+        });
+
+        bytes32 owner = addressToBytes32(msg.sender);
+
+        vm.startBroadcast();
+        address governorLogic = address(new BridgedGovernor(MUMBAI_ENDPOINT, SEPOLIA_EID, owner));
+        address governorProxy = address(new BridgedGovernorProxy(governorLogic, calls));
+        vm.stopBroadcast();
+
+        require(governorProxy == governor, "Invalid deployment address");
+        console.log("Deployed BridgedGovernor:", governor);
+    }
+}
+
+// forge script scripts/DeployBridgedGovernor.sol:SendToMumbai $WALLET_ARGS -f "$ETH_RPC_URL"
+
+contract SendToMumbai is Script {
+    function run() public {
+        require(block.chainid == SEPOLIA_CHAIN_ID, "Must be run on Sepolia");
+
+        Call[] memory calls = new Call[](1);
+        calls[0] = Call({
+            target: 0x6D8873f56a56f0Af376091beddDD149f3592e854,
+            data: abi.encodeWithSignature("approve(address,uint256)", address(0x1234), 5678),
+            value: 0
+        });
+
+        MessagingParams memory params = MessagingParams({
+            dstEid: MUMBAI_EID,
+            receiver: addressToBytes32(0xf3Fb9312d0b2413f0C79DbcaFfCfCF70Bef95fc5),
+            message: abi.encode(calls),
+            options: messageOptions(50_000),
+            payInLzToken: false
+        });
+
+        vm.startBroadcast();
+        MessagingReceipt memory receipt =
+            ILayerZeroEndpointV2(SEPOLIA_ENDPOINT).send{value: 0.001 ether}(params, msg.sender);
+        vm.stopBroadcast();
+        console.log("GUID:", Strings.toHexString(uint256(receipt.guid), 32));
+        console.log("Nonce:", receipt.nonce);
+        console.log("Cost wei:", receipt.fee.nativeFee);
+    }
+}
+
+// - C O N F I R M A T I O N S -
+//96, // 3 epochs

src/BridgedGovernor.sol

@@ -0,0 +1,82 @@
+// SPDX-License-Identifier: GPL-3.0-only
+pragma solidity ^0.8.20;
+
+import {
+    ILayerZeroReceiver,
+    Origin
+} from "layer-zero-v2/protocol/contracts/interfaces/ILayerZeroReceiver.sol";
+import {ERC1967Proxy} from "openzeppelin-contracts/proxy/ERC1967/ERC1967Proxy.sol";
+import {UUPSUpgradeable} from "openzeppelin-contracts/proxy/utils/UUPSUpgradeable.sol";
+import {Address} from "openzeppelin-contracts/utils/Address.sol";
+
+/// @notice Description of a call.
+/// @param target The called address.
+/// @param data The calldata to be used for the call.
+/// @param value The value of the call.
+struct Call {
+    address target;
+    bytes data;
+    uint256 value;
+}
+
+function runCalls(Call[] memory calls) {
+    for (uint256 i = 0; i < calls.length; i++) {
+        Call memory call = calls[i];
+        Address.functionCallWithValue(call.target, call.data, call.value);
+    }
+}
+
+contract BridgedGovernor is UUPSUpgradeable, ILayerZeroReceiver {
+    address public immutable endpoint;
+    uint32 public immutable ownerEid;
+    bytes32 public immutable owner;
+
+    // slither-disable-next-line naming-convention
+    uint64 internal _lastNonce;
+
+    constructor(address endpoint_, uint32 ownerEid_, bytes32 owner_) {
+        // slither-disable-next-line missing-zero-check
+        endpoint = endpoint_;
+        ownerEid = ownerEid_;
+        owner = owner_;
+    }
+
+    function allowInitializePath(Origin calldata origin) public view onlyProxy returns (bool) {
+        return origin.srcEid == ownerEid && origin.sender == owner;
+    }
+
+    function nextNonce(uint32 srcEid, bytes32 sender)
+        public
+        view
+        onlyProxy
+        returns (uint64 nextNonce_)
+    {
+        if (srcEid == ownerEid && sender == owner) nextNonce_ = _lastNonce + 1;
+    }
+
+    function lzReceive(
+        Origin calldata origin,
+        bytes32, /* guid */
+        bytes calldata message,
+        address, /* executor */
+        bytes calldata /* extraData */
+    ) public payable onlyProxy {
+        require(msg.sender == endpoint, "Must be called by the endpoint");
+        require(origin.srcEid == ownerEid, "Invalid message source chain");
+        require(origin.sender == owner, "Invalid message sender");
+        require(origin.nonce == _lastNonce + 1, "Invalid message nonce");
+        // slither-disable-next-line events-maths
+        _lastNonce = origin.nonce;
+        runCalls(abi.decode(message, (Call[])));
+    }
+
+    function _authorizeUpgrade(address /* newImplementation */ ) internal view override {
+        require(msg.sender == address(this), "Only upgradeable by self");
+    }
+}
+
+contract BridgedGovernorProxy is ERC1967Proxy {
+    constructor(address logic, Call[] memory calls) ERC1967Proxy(logic, "") {
+        runCalls(calls);
+    }
+}