LayerZero V2 Bridge

Description

LayerZero V2 Bridge is a smart contract for cross-chain token transfers using LayerZero V2. The contract allows the owner to add and remove supported tokens, while users can send tokens between networks with a small transaction fee.

Features

• Token Management: The contract owner can manage the list of supported tokens.
• Cross-Chain Token Transfers: Users can transfer tokens between different chains with a small fee.
• Receiving Tokens from Another Chain: The contract receives and distributes tokens after cross-chain transfers.
• Flexible Fee Management: The owner can adjust the fee percentage and fee recipient address.
• Security Enhancements: Implements reentrancy protection (ReentrancyGuard) and secure token transfers (SafeERC20).

Deployment

Requirements

• Solidity 0.8.19+
• Foundry (for testing)
• OpenZeppelin Contracts
• LayerZero OApp

Install Dependencies

forge install foundry-rs/forge-std
forge install OpenZeppelin/openzeppelin-contracts

Compilation

forge build

Deployment (Example in Foundry)

LayerZeroBridge bridge = new LayerZeroBridge(endpoint, feeRecipient);

Contract API

Token Management

function addToken(address tokenAddress) external onlyOwner;
function removeToken(address tokenAddress) external onlyOwner;

Fee Management

function setFeePercentage(uint256 newFee) external onlyOwner;
function setFeeRecipient(address newRecipient) external onlyOwner;

Sending Tokens

function sendToken(address token, uint256 amount, uint32 destination, bytes memory adapterParams) external payable;

Receiving Tokens (LayerZero Call)

function _lzReceive(uint32, bytes32, bytes memory payload, address) internal override;

Testing

forge test

License

MIT