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Contract Source Code Verified (Exact Match)
Contract Name:
XERC20LockboxTokenPool
Compiler Version
v0.8.24+commit.e11b9ed9
Optimization Enabled:
Yes with 100000 runs
Other Settings:
paris EvmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: MIT pragma solidity ^0.8.24; import {Pool} from "@chainlink/contracts-ccip/src/v0.8/ccip/libraries/Pool.sol"; import {TokenPool} from "@chainlink/contracts-ccip/src/v0.8/ccip/pools/TokenPool.sol"; import { IERC20, SafeERC20 } from "@chainlink/contracts-ccip/src/v0.8/vendor/openzeppelin-solidity/v4.8.3/contracts/token/ERC20/utils/SafeERC20.sol"; import {TokenPoolAbstract} from "./TokenPoolAbstract.sol"; import {IXERC20} from "./interfaces/IXERC20.sol"; import {IXERC20LockBox} from "./interfaces/IXERC20LockBox.sol"; /** * @title Token Pool XERC20 contract * @dev The XERC20LockboxTokenPool contract is a contract that implements the TokenPoolAbstract contract. * It supports the XERC20 token and the XERC20LockBox contract. * On `lockOrBurn`, the contract will deposit the ERC20 token into the XERC20LockBox contract and * burn the equivalent amount of XERC20 tokens. * On `releaseOrMint`, the contract will mint the equivalent amount of XERC20 tokens and * withdraw the ERC20 token from the XERC20LockBox contract and send it to the receiver. */ contract XERC20LockboxTokenPool is TokenPoolAbstract { using SafeERC20 for IERC20; error InsufficientLockboxBalance(uint256 lockboxBalance, uint256 localAmount); IXERC20LockBox internal immutable i_lockbox; IXERC20 internal immutable i_xerc20; /** * @notice Get the XERC20LockBox contract address * @return address The XERC20LockBox contract address */ function getLockbox() external view returns (address) { return address(i_lockbox); } /** * @notice Get the XERC20 contract address * @return address The XERC20 contract address */ function getXERC20() external view returns (address) { return address(i_xerc20); } /** * @notice Sets the immutable values for {i_lockbox} and {i_xerc20}. */ constructor(address lockbox, uint8 localTokenDecimals, address[] memory allowlist, address rmnProxy, address router) TokenPool(IERC20(IXERC20LockBox(lockbox).ERC20()), localTokenDecimals, allowlist, rmnProxy, router) { i_lockbox = IXERC20LockBox(lockbox); i_xerc20 = IXERC20(IXERC20LockBox(lockbox).XERC20()); } /** * @dev Deposit the ERC20 token into the XERC20LockBox contract and burn the equivalent amount * of XERC20 tokens. */ function _lockOrBurn(Pool.LockOrBurnInV1 calldata lockOrBurnIn) internal override { i_token.safeApprove(address(i_lockbox), lockOrBurnIn.amount); i_lockbox.deposit(lockOrBurnIn.amount); i_xerc20.burn(address(this), lockOrBurnIn.amount); } /** * @dev Mint the equivalent amount of XERC20 tokens and withdraw the ERC20 token from the XERC20LockBox * contract and send it to the receiver. */ function _releaseOrMint(Pool.ReleaseOrMintInV1 calldata releaseOrMintIn, uint256 localAmount) internal override { uint256 lockboxBalance = i_token.balanceOf(address(i_lockbox)); if (lockboxBalance < localAmount) revert InsufficientLockboxBalance(lockboxBalance, localAmount); i_xerc20.mint(address(this), localAmount); // Token approval is needed as the lockbox will make a call to the underlying token's burn function, // which requires a prior token approval IERC20(i_xerc20).safeApprove(address(i_lockbox), localAmount); i_lockbox.withdrawTo(releaseOrMintIn.receiver, localAmount); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /// @notice This library contains various token pool functions to aid constructing the return data. library Pool { // The tag used to signal support for the pool v1 standard. // bytes4(keccak256("CCIP_POOL_V1")) bytes4 public constant CCIP_POOL_V1 = 0xaff2afbf; // The number of bytes in the return data for a pool v1 releaseOrMint call. // This should match the size of the ReleaseOrMintOutV1 struct. uint16 public constant CCIP_POOL_V1_RET_BYTES = 32; // The default max number of bytes in the return data for a pool v1 lockOrBurn call. // This data can be used to send information to the destination chain token pool. Can be overwritten // in the TokenTransferFeeConfig.destBytesOverhead if more data is required. uint32 public constant CCIP_LOCK_OR_BURN_V1_RET_BYTES = 32; struct LockOrBurnInV1 { bytes receiver; // The recipient of the tokens on the destination chain, abi encoded. uint64 remoteChainSelector; // ─╮ The chain ID of the destination chain. address originalSender; // ─────╯ The original sender of the tx on the source chain. uint256 amount; // The amount of tokens to lock or burn, denominated in the source token's decimals. address localToken; // The address on this chain of the token to lock or burn. } struct LockOrBurnOutV1 { // The address of the destination token, abi encoded in the case of EVM chains. // This value is UNTRUSTED as any pool owner can return whatever value they want. bytes destTokenAddress; // Optional pool data to be transferred to the destination chain. Be default this is capped at // CCIP_LOCK_OR_BURN_V1_RET_BYTES bytes. If more data is required, the TokenTransferFeeConfig.destBytesOverhead // has to be set for the specific token. bytes destPoolData; } struct ReleaseOrMintInV1 { bytes originalSender; // The original sender of the tx on the source chain. uint64 remoteChainSelector; // ─╮ The chain ID of the source chain. address receiver; // ───────────╯ The recipient of the tokens on the destination chain. uint256 amount; // The amount of tokens to release or mint, denominated in the source token's decimals. address localToken; // The address on this chain of the token to release or mint. /// @dev WARNING: sourcePoolAddress should be checked prior to any processing of funds. Make sure it matches the /// expected pool address for the given remoteChainSelector. bytes sourcePoolAddress; // The address of the source pool, abi encoded in the case of EVM chains. bytes sourcePoolData; // The data received from the source pool to process the release or mint. /// @dev WARNING: offchainTokenData is untrusted data. bytes offchainTokenData; // The offchain data to process the release or mint. } struct ReleaseOrMintOutV1 { // The number of tokens released or minted on the destination chain, denominated in the local token's decimals. // This value is expected to be equal to the ReleaseOrMintInV1.amount in the case where the source and destination // chain have the same number of decimals. uint256 destinationAmount; } }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity ^0.8.24; import {IPoolV1} from "../interfaces/IPool.sol"; import {IRMN} from "../interfaces/IRMN.sol"; import {IRouter} from "../interfaces/IRouter.sol"; import {Ownable2StepMsgSender} from "../../shared/access/Ownable2StepMsgSender.sol"; import {Pool} from "../libraries/Pool.sol"; import {RateLimiter} from "../libraries/RateLimiter.sol"; import {IERC20} from "../../vendor/openzeppelin-solidity/v4.8.3/contracts/token/ERC20/IERC20.sol"; import {IERC20Metadata} from "../../vendor/openzeppelin-solidity/v4.8.3/contracts/token/ERC20/extensions/IERC20Metadata.sol"; import {IERC165} from "../../vendor/openzeppelin-solidity/v5.0.2/contracts/utils/introspection/IERC165.sol"; import {EnumerableSet} from "../../vendor/openzeppelin-solidity/v5.0.2/contracts/utils/structs/EnumerableSet.sol"; /// @notice Base abstract class with common functions for all token pools. /// A token pool serves as isolated place for holding tokens and token specific logic /// that may execute as tokens move across the bridge. /// @dev This pool supports different decimals on different chains but using this feature could impact the total number /// of tokens in circulation. Since all of the tokens are locked/burned on the source, and a rounded amount is /// minted/released on the destination, the number of tokens minted/released could be less than the number of tokens /// burned/locked. This is because the source chain does not know about the destination token decimals. This is not a /// problem if the decimals are the same on both chains. /// /// Example: /// Assume there is a token with 6 decimals on chain A and 3 decimals on chain B. /// - 1.234567 tokens are burned on chain A. /// - 1.234 tokens are minted on chain B. /// When sending the 1.234 tokens back to chain A, you will receive 1.234000 tokens on chain A, effectively losing /// 0.000567 tokens. /// In the case of a burnMint pool on chain A, these funds are burned in the pool on chain A. /// In the case of a lockRelease pool on chain A, these funds accumulate in the pool on chain A. abstract contract TokenPool is IPoolV1, Ownable2StepMsgSender { using EnumerableSet for EnumerableSet.Bytes32Set; using EnumerableSet for EnumerableSet.AddressSet; using EnumerableSet for EnumerableSet.UintSet; using RateLimiter for RateLimiter.TokenBucket; error CallerIsNotARampOnRouter(address caller); error ZeroAddressNotAllowed(); error SenderNotAllowed(address sender); error AllowListNotEnabled(); error NonExistentChain(uint64 remoteChainSelector); error ChainNotAllowed(uint64 remoteChainSelector); error CursedByRMN(); error ChainAlreadyExists(uint64 chainSelector); error InvalidSourcePoolAddress(bytes sourcePoolAddress); error InvalidToken(address token); error Unauthorized(address caller); error PoolAlreadyAdded(uint64 remoteChainSelector, bytes remotePoolAddress); error InvalidRemotePoolForChain(uint64 remoteChainSelector, bytes remotePoolAddress); error InvalidRemoteChainDecimals(bytes sourcePoolData); error MismatchedArrayLengths(); error OverflowDetected(uint8 remoteDecimals, uint8 localDecimals, uint256 remoteAmount); error InvalidDecimalArgs(uint8 expected, uint8 actual); event Locked(address indexed sender, uint256 amount); event Burned(address indexed sender, uint256 amount); event Released(address indexed sender, address indexed recipient, uint256 amount); event Minted(address indexed sender, address indexed recipient, uint256 amount); event ChainAdded( uint64 remoteChainSelector, bytes remoteToken, RateLimiter.Config outboundRateLimiterConfig, RateLimiter.Config inboundRateLimiterConfig ); event ChainConfigured( uint64 remoteChainSelector, RateLimiter.Config outboundRateLimiterConfig, RateLimiter.Config inboundRateLimiterConfig ); event ChainRemoved(uint64 remoteChainSelector); event RemotePoolAdded(uint64 indexed remoteChainSelector, bytes remotePoolAddress); event RemotePoolRemoved(uint64 indexed remoteChainSelector, bytes remotePoolAddress); event AllowListAdd(address sender); event AllowListRemove(address sender); event RouterUpdated(address oldRouter, address newRouter); event RateLimitAdminSet(address rateLimitAdmin); struct ChainUpdate { uint64 remoteChainSelector; // Remote chain selector bytes[] remotePoolAddresses; // Address of the remote pool, ABI encoded in the case of a remote EVM chain. bytes remoteTokenAddress; // Address of the remote token, ABI encoded in the case of a remote EVM chain. RateLimiter.Config outboundRateLimiterConfig; // Outbound rate limited config, meaning the rate limits for all of the onRamps for the given chain RateLimiter.Config inboundRateLimiterConfig; // Inbound rate limited config, meaning the rate limits for all of the offRamps for the given chain } struct RemoteChainConfig { RateLimiter.TokenBucket outboundRateLimiterConfig; // Outbound rate limited config, meaning the rate limits for all of the onRamps for the given chain RateLimiter.TokenBucket inboundRateLimiterConfig; // Inbound rate limited config, meaning the rate limits for all of the offRamps for the given chain bytes remoteTokenAddress; // Address of the remote token, ABI encoded in the case of a remote EVM chain. EnumerableSet.Bytes32Set remotePools; // Set of remote pool hashes, ABI encoded in the case of a remote EVM chain. } /// @dev The bridgeable token that is managed by this pool. Pools could support multiple tokens at the same time if /// required, but this implementation only supports one token. IERC20 internal immutable i_token; /// @dev The number of decimals of the token managed by this pool. uint8 internal immutable i_tokenDecimals; /// @dev The address of the RMN proxy address internal immutable i_rmnProxy; /// @dev The immutable flag that indicates if the pool is access-controlled. bool internal immutable i_allowlistEnabled; /// @dev A set of addresses allowed to trigger lockOrBurn as original senders. /// Only takes effect if i_allowlistEnabled is true. /// This can be used to ensure only token-issuer specified addresses can move tokens. EnumerableSet.AddressSet internal s_allowlist; /// @dev The address of the router IRouter internal s_router; /// @dev A set of allowed chain selectors. We want the allowlist to be enumerable to /// be able to quickly determine (without parsing logs) who can access the pool. /// @dev The chain selectors are in uint256 format because of the EnumerableSet implementation. EnumerableSet.UintSet internal s_remoteChainSelectors; mapping(uint64 remoteChainSelector => RemoteChainConfig) internal s_remoteChainConfigs; /// @notice A mapping of hashed pool addresses to their unhashed form. This is used to be able to find the actually /// configured pools and not just their hashed versions. mapping(bytes32 poolAddressHash => bytes poolAddress) internal s_remotePoolAddresses; /// @notice The address of the rate limiter admin. /// @dev Can be address(0) if none is configured. address internal s_rateLimitAdmin; constructor(IERC20 token, uint8 localTokenDecimals, address[] memory allowlist, address rmnProxy, address router) { if (address(token) == address(0) || router == address(0) || rmnProxy == address(0)) revert ZeroAddressNotAllowed(); i_token = token; i_rmnProxy = rmnProxy; try IERC20Metadata(address(token)).decimals() returns (uint8 actualTokenDecimals) { if (localTokenDecimals != actualTokenDecimals) { revert InvalidDecimalArgs(localTokenDecimals, actualTokenDecimals); } } catch { // The decimals function doesn't exist, which is possible since it's optional in the ERC20 spec. We skip the check and // assume the supplied token decimals are correct. } i_tokenDecimals = localTokenDecimals; s_router = IRouter(router); // Pool can be set as permissioned or permissionless at deployment time only to save hot-path gas. i_allowlistEnabled = allowlist.length > 0; if (i_allowlistEnabled) { _applyAllowListUpdates(new address[](0), allowlist); } } /// @inheritdoc IPoolV1 function isSupportedToken( address token ) public view virtual returns (bool) { return token == address(i_token); } /// @notice Gets the IERC20 token that this pool can lock or burn. /// @return token The IERC20 token representation. function getToken() public view returns (IERC20 token) { return i_token; } /// @notice Get RMN proxy address /// @return rmnProxy Address of RMN proxy function getRmnProxy() public view returns (address rmnProxy) { return i_rmnProxy; } /// @notice Gets the pool's Router /// @return router The pool's Router function getRouter() public view returns (address router) { return address(s_router); } /// @notice Sets the pool's Router /// @param newRouter The new Router function setRouter( address newRouter ) public onlyOwner { if (newRouter == address(0)) revert ZeroAddressNotAllowed(); address oldRouter = address(s_router); s_router = IRouter(newRouter); emit RouterUpdated(oldRouter, newRouter); } /// @notice Signals which version of the pool interface is supported function supportsInterface( bytes4 interfaceId ) public pure virtual override returns (bool) { return interfaceId == Pool.CCIP_POOL_V1 || interfaceId == type(IPoolV1).interfaceId || interfaceId == type(IERC165).interfaceId; } // ================================================================ // │ Validation │ // ================================================================ /// @notice Validates the lock or burn input for correctness on /// - token to be locked or burned /// - RMN curse status /// - allowlist status /// - if the sender is a valid onRamp /// - rate limit status /// @param lockOrBurnIn The input to validate. /// @dev This function should always be called before executing a lock or burn. Not doing so would allow /// for various exploits. function _validateLockOrBurn( Pool.LockOrBurnInV1 calldata lockOrBurnIn ) internal { if (!isSupportedToken(lockOrBurnIn.localToken)) revert InvalidToken(lockOrBurnIn.localToken); if (IRMN(i_rmnProxy).isCursed(bytes16(uint128(lockOrBurnIn.remoteChainSelector)))) revert CursedByRMN(); _checkAllowList(lockOrBurnIn.originalSender); _onlyOnRamp(lockOrBurnIn.remoteChainSelector); _consumeOutboundRateLimit(lockOrBurnIn.remoteChainSelector, lockOrBurnIn.amount); } /// @notice Validates the release or mint input for correctness on /// - token to be released or minted /// - RMN curse status /// - if the sender is a valid offRamp /// - if the source pool is valid /// - rate limit status /// @param releaseOrMintIn The input to validate. /// @dev This function should always be called before executing a release or mint. Not doing so would allow /// for various exploits. function _validateReleaseOrMint( Pool.ReleaseOrMintInV1 calldata releaseOrMintIn ) internal { if (!isSupportedToken(releaseOrMintIn.localToken)) revert InvalidToken(releaseOrMintIn.localToken); if (IRMN(i_rmnProxy).isCursed(bytes16(uint128(releaseOrMintIn.remoteChainSelector)))) revert CursedByRMN(); _onlyOffRamp(releaseOrMintIn.remoteChainSelector); // Validates that the source pool address is configured on this pool. if (!isRemotePool(releaseOrMintIn.remoteChainSelector, releaseOrMintIn.sourcePoolAddress)) { revert InvalidSourcePoolAddress(releaseOrMintIn.sourcePoolAddress); } _consumeInboundRateLimit(releaseOrMintIn.remoteChainSelector, releaseOrMintIn.amount); } // ================================================================ // │ Token decimals │ // ================================================================ /// @notice Gets the IERC20 token decimals on the local chain. function getTokenDecimals() public view virtual returns (uint8 decimals) { return i_tokenDecimals; } function _encodeLocalDecimals() internal view virtual returns (bytes memory) { return abi.encode(i_tokenDecimals); } function _parseRemoteDecimals( bytes memory sourcePoolData ) internal view virtual returns (uint8) { // Fallback to the local token decimals if the source pool data is empty. This allows for backwards compatibility. if (sourcePoolData.length == 0) { return i_tokenDecimals; } if (sourcePoolData.length != 32) { revert InvalidRemoteChainDecimals(sourcePoolData); } uint256 remoteDecimals = abi.decode(sourcePoolData, (uint256)); if (remoteDecimals > type(uint8).max) { revert InvalidRemoteChainDecimals(sourcePoolData); } return uint8(remoteDecimals); } /// @notice Calculates the local amount based on the remote amount and decimals. /// @param remoteAmount The amount on the remote chain. /// @param remoteDecimals The decimals of the token on the remote chain. /// @return The local amount. /// @dev This function protects against overflows. If there is a transaction that hits the overflow check, it is /// probably incorrect as that means the amount cannot be represented on this chain. If the local decimals have been /// wrongly configured, the token issuer could redeploy the pool with the correct decimals and manually re-execute the /// CCIP tx to fix the issue. function _calculateLocalAmount(uint256 remoteAmount, uint8 remoteDecimals) internal view virtual returns (uint256) { if (remoteDecimals == i_tokenDecimals) { return remoteAmount; } if (remoteDecimals > i_tokenDecimals) { uint8 decimalsDiff = remoteDecimals - i_tokenDecimals; if (decimalsDiff > 77) { // This is a safety check to prevent overflow in the next calculation. revert OverflowDetected(remoteDecimals, i_tokenDecimals, remoteAmount); } // Solidity rounds down so there is no risk of minting more tokens than the remote chain sent. return remoteAmount / (10 ** decimalsDiff); } // This is a safety check to prevent overflow in the next calculation. // More than 77 would never fit in a uint256 and would cause an overflow. We also check if the resulting amount // would overflow. uint8 diffDecimals = i_tokenDecimals - remoteDecimals; if (diffDecimals > 77 || remoteAmount > type(uint256).max / (10 ** diffDecimals)) { revert OverflowDetected(remoteDecimals, i_tokenDecimals, remoteAmount); } return remoteAmount * (10 ** diffDecimals); } // ================================================================ // │ Chain permissions │ // ================================================================ /// @notice Gets the pool address on the remote chain. /// @param remoteChainSelector Remote chain selector. /// @dev To support non-evm chains, this value is encoded into bytes function getRemotePools( uint64 remoteChainSelector ) public view returns (bytes[] memory) { bytes32[] memory remotePoolHashes = s_remoteChainConfigs[remoteChainSelector].remotePools.values(); bytes[] memory remotePools = new bytes[](remotePoolHashes.length); for (uint256 i = 0; i < remotePoolHashes.length; ++i) { remotePools[i] = s_remotePoolAddresses[remotePoolHashes[i]]; } return remotePools; } /// @notice Checks if the pool address is configured on the remote chain. /// @param remoteChainSelector Remote chain selector. /// @param remotePoolAddress The address of the remote pool. function isRemotePool(uint64 remoteChainSelector, bytes calldata remotePoolAddress) public view returns (bool) { return s_remoteChainConfigs[remoteChainSelector].remotePools.contains(keccak256(remotePoolAddress)); } /// @notice Gets the token address on the remote chain. /// @param remoteChainSelector Remote chain selector. /// @dev To support non-evm chains, this value is encoded into bytes function getRemoteToken( uint64 remoteChainSelector ) public view returns (bytes memory) { return s_remoteChainConfigs[remoteChainSelector].remoteTokenAddress; } /// @notice Adds a remote pool for a given chain selector. This could be due to a pool being upgraded on the remote /// chain. We don't simply want to replace the old pool as there could still be valid inflight messages from the old /// pool. This function allows for multiple pools to be added for a single chain selector. /// @param remoteChainSelector The remote chain selector for which the remote pool address is being added. /// @param remotePoolAddress The address of the new remote pool. function addRemotePool(uint64 remoteChainSelector, bytes calldata remotePoolAddress) external onlyOwner { if (!isSupportedChain(remoteChainSelector)) revert NonExistentChain(remoteChainSelector); _setRemotePool(remoteChainSelector, remotePoolAddress); } /// @notice Removes the remote pool address for a given chain selector. /// @dev All inflight txs from the remote pool will be rejected after it is removed. To ensure no loss of funds, there /// should be no inflight txs from the given pool. function removeRemotePool(uint64 remoteChainSelector, bytes calldata remotePoolAddress) external onlyOwner { if (!isSupportedChain(remoteChainSelector)) revert NonExistentChain(remoteChainSelector); if (!s_remoteChainConfigs[remoteChainSelector].remotePools.remove(keccak256(remotePoolAddress))) { revert InvalidRemotePoolForChain(remoteChainSelector, remotePoolAddress); } emit RemotePoolRemoved(remoteChainSelector, remotePoolAddress); } /// @inheritdoc IPoolV1 function isSupportedChain( uint64 remoteChainSelector ) public view returns (bool) { return s_remoteChainSelectors.contains(remoteChainSelector); } /// @notice Get list of allowed chains /// @return list of chains. function getSupportedChains() public view returns (uint64[] memory) { uint256[] memory uint256ChainSelectors = s_remoteChainSelectors.values(); uint64[] memory chainSelectors = new uint64[](uint256ChainSelectors.length); for (uint256 i = 0; i < uint256ChainSelectors.length; ++i) { chainSelectors[i] = uint64(uint256ChainSelectors[i]); } return chainSelectors; } /// @notice Sets the permissions for a list of chains selectors. Actual senders for these chains /// need to be allowed on the Router to interact with this pool. /// @param remoteChainSelectorsToRemove A list of chain selectors to remove. /// @param chainsToAdd A list of chains and their new permission status & rate limits. Rate limits /// are only used when the chain is being added through `allowed` being true. /// @dev Only callable by the owner function applyChainUpdates( uint64[] calldata remoteChainSelectorsToRemove, ChainUpdate[] calldata chainsToAdd ) external virtual onlyOwner { for (uint256 i = 0; i < remoteChainSelectorsToRemove.length; ++i) { uint64 remoteChainSelectorToRemove = remoteChainSelectorsToRemove[i]; // If the chain doesn't exist, revert if (!s_remoteChainSelectors.remove(remoteChainSelectorToRemove)) { revert NonExistentChain(remoteChainSelectorToRemove); } // Remove all remote pool hashes for the chain bytes32[] memory remotePools = s_remoteChainConfigs[remoteChainSelectorToRemove].remotePools.values(); for (uint256 j = 0; j < remotePools.length; ++j) { s_remoteChainConfigs[remoteChainSelectorToRemove].remotePools.remove(remotePools[j]); } delete s_remoteChainConfigs[remoteChainSelectorToRemove]; emit ChainRemoved(remoteChainSelectorToRemove); } for (uint256 i = 0; i < chainsToAdd.length; ++i) { ChainUpdate memory newChain = chainsToAdd[i]; RateLimiter._validateTokenBucketConfig(newChain.outboundRateLimiterConfig, false); RateLimiter._validateTokenBucketConfig(newChain.inboundRateLimiterConfig, false); if (newChain.remoteTokenAddress.length == 0) { revert ZeroAddressNotAllowed(); } // If the chain already exists, revert if (!s_remoteChainSelectors.add(newChain.remoteChainSelector)) { revert ChainAlreadyExists(newChain.remoteChainSelector); } RemoteChainConfig storage remoteChainConfig = s_remoteChainConfigs[newChain.remoteChainSelector]; remoteChainConfig.outboundRateLimiterConfig = RateLimiter.TokenBucket({ rate: newChain.outboundRateLimiterConfig.rate, capacity: newChain.outboundRateLimiterConfig.capacity, tokens: newChain.outboundRateLimiterConfig.capacity, lastUpdated: uint32(block.timestamp), isEnabled: newChain.outboundRateLimiterConfig.isEnabled }); remoteChainConfig.inboundRateLimiterConfig = RateLimiter.TokenBucket({ rate: newChain.inboundRateLimiterConfig.rate, capacity: newChain.inboundRateLimiterConfig.capacity, tokens: newChain.inboundRateLimiterConfig.capacity, lastUpdated: uint32(block.timestamp), isEnabled: newChain.inboundRateLimiterConfig.isEnabled }); remoteChainConfig.remoteTokenAddress = newChain.remoteTokenAddress; for (uint256 j = 0; j < newChain.remotePoolAddresses.length; ++j) { _setRemotePool(newChain.remoteChainSelector, newChain.remotePoolAddresses[j]); } emit ChainAdded( newChain.remoteChainSelector, newChain.remoteTokenAddress, newChain.outboundRateLimiterConfig, newChain.inboundRateLimiterConfig ); } } /// @notice Adds a pool address to the allowed remote token pools for a particular chain. /// @param remoteChainSelector The remote chain selector for which the remote pool address is being added. /// @param remotePoolAddress The address of the new remote pool. function _setRemotePool(uint64 remoteChainSelector, bytes memory remotePoolAddress) internal { if (remotePoolAddress.length == 0) { revert ZeroAddressNotAllowed(); } bytes32 poolHash = keccak256(remotePoolAddress); // Check if the pool already exists. if (!s_remoteChainConfigs[remoteChainSelector].remotePools.add(poolHash)) { revert PoolAlreadyAdded(remoteChainSelector, remotePoolAddress); } // Add the pool to the mapping to be able to un-hash it later. s_remotePoolAddresses[poolHash] = remotePoolAddress; emit RemotePoolAdded(remoteChainSelector, remotePoolAddress); } // ================================================================ // │ Rate limiting │ // ================================================================ /// @dev The inbound rate limits should be slightly higher than the outbound rate limits. This is because many chains /// finalize blocks in batches. CCIP also commits messages in batches: the commit plugin bundles multiple messages in /// a single merkle root. /// Imagine the following scenario. /// - Chain A has an inbound and outbound rate limit of 100 tokens capacity and 1 token per second refill rate. /// - Chain B has an inbound and outbound rate limit of 100 tokens capacity and 1 token per second refill rate. /// /// At time 0: /// - Chain A sends 100 tokens to Chain B. /// At time 5: /// - Chain A sends 5 tokens to Chain B. /// At time 6: /// The epoch that contains blocks [0-5] is finalized. /// Both transactions will be included in the same merkle root and become executable at the same time. This means /// the token pool on chain B requires a capacity of 105 to successfully execute both messages at the same time. /// The exact additional capacity required depends on the refill rate and the size of the source chain epochs and the /// CCIP round time. For simplicity, a 5-10% buffer should be sufficient in most cases. /// @notice Sets the rate limiter admin address. /// @dev Only callable by the owner. /// @param rateLimitAdmin The new rate limiter admin address. function setRateLimitAdmin( address rateLimitAdmin ) external onlyOwner { s_rateLimitAdmin = rateLimitAdmin; emit RateLimitAdminSet(rateLimitAdmin); } /// @notice Gets the rate limiter admin address. function getRateLimitAdmin() external view returns (address) { return s_rateLimitAdmin; } /// @notice Consumes outbound rate limiting capacity in this pool function _consumeOutboundRateLimit(uint64 remoteChainSelector, uint256 amount) internal { s_remoteChainConfigs[remoteChainSelector].outboundRateLimiterConfig._consume(amount, address(i_token)); } /// @notice Consumes inbound rate limiting capacity in this pool function _consumeInboundRateLimit(uint64 remoteChainSelector, uint256 amount) internal { s_remoteChainConfigs[remoteChainSelector].inboundRateLimiterConfig._consume(amount, address(i_token)); } /// @notice Gets the token bucket with its values for the block it was requested at. /// @return The token bucket. function getCurrentOutboundRateLimiterState( uint64 remoteChainSelector ) external view returns (RateLimiter.TokenBucket memory) { return s_remoteChainConfigs[remoteChainSelector].outboundRateLimiterConfig._currentTokenBucketState(); } /// @notice Gets the token bucket with its values for the block it was requested at. /// @return The token bucket. function getCurrentInboundRateLimiterState( uint64 remoteChainSelector ) external view returns (RateLimiter.TokenBucket memory) { return s_remoteChainConfigs[remoteChainSelector].inboundRateLimiterConfig._currentTokenBucketState(); } /// @notice Sets multiple chain rate limiter configs. /// @param remoteChainSelectors The remote chain selector for which the rate limits apply. /// @param outboundConfigs The new outbound rate limiter config, meaning the onRamp rate limits for the given chain. /// @param inboundConfigs The new inbound rate limiter config, meaning the offRamp rate limits for the given chain. function setChainRateLimiterConfigs( uint64[] calldata remoteChainSelectors, RateLimiter.Config[] calldata outboundConfigs, RateLimiter.Config[] calldata inboundConfigs ) external { if (msg.sender != s_rateLimitAdmin && msg.sender != owner()) revert Unauthorized(msg.sender); if (remoteChainSelectors.length != outboundConfigs.length || remoteChainSelectors.length != inboundConfigs.length) { revert MismatchedArrayLengths(); } for (uint256 i = 0; i < remoteChainSelectors.length; ++i) { _setRateLimitConfig(remoteChainSelectors[i], outboundConfigs[i], inboundConfigs[i]); } } /// @notice Sets the chain rate limiter config. /// @param remoteChainSelector The remote chain selector for which the rate limits apply. /// @param outboundConfig The new outbound rate limiter config, meaning the onRamp rate limits for the given chain. /// @param inboundConfig The new inbound rate limiter config, meaning the offRamp rate limits for the given chain. function setChainRateLimiterConfig( uint64 remoteChainSelector, RateLimiter.Config memory outboundConfig, RateLimiter.Config memory inboundConfig ) external { if (msg.sender != s_rateLimitAdmin && msg.sender != owner()) revert Unauthorized(msg.sender); _setRateLimitConfig(remoteChainSelector, outboundConfig, inboundConfig); } function _setRateLimitConfig( uint64 remoteChainSelector, RateLimiter.Config memory outboundConfig, RateLimiter.Config memory inboundConfig ) internal { if (!isSupportedChain(remoteChainSelector)) revert NonExistentChain(remoteChainSelector); RateLimiter._validateTokenBucketConfig(outboundConfig, false); s_remoteChainConfigs[remoteChainSelector].outboundRateLimiterConfig._setTokenBucketConfig(outboundConfig); RateLimiter._validateTokenBucketConfig(inboundConfig, false); s_remoteChainConfigs[remoteChainSelector].inboundRateLimiterConfig._setTokenBucketConfig(inboundConfig); emit ChainConfigured(remoteChainSelector, outboundConfig, inboundConfig); } // ================================================================ // │ Access │ // ================================================================ /// @notice Checks whether remote chain selector is configured on this contract, and if the msg.sender /// is a permissioned onRamp for the given chain on the Router. function _onlyOnRamp( uint64 remoteChainSelector ) internal view { if (!isSupportedChain(remoteChainSelector)) revert ChainNotAllowed(remoteChainSelector); if (!(msg.sender == s_router.getOnRamp(remoteChainSelector))) revert CallerIsNotARampOnRouter(msg.sender); } /// @notice Checks whether remote chain selector is configured on this contract, and if the msg.sender /// is a permissioned offRamp for the given chain on the Router. function _onlyOffRamp( uint64 remoteChainSelector ) internal view { if (!isSupportedChain(remoteChainSelector)) revert ChainNotAllowed(remoteChainSelector); if (!s_router.isOffRamp(remoteChainSelector, msg.sender)) revert CallerIsNotARampOnRouter(msg.sender); } // ================================================================ // │ Allowlist │ // ================================================================ function _checkAllowList( address sender ) internal view { if (i_allowlistEnabled) { if (!s_allowlist.contains(sender)) { revert SenderNotAllowed(sender); } } } /// @notice Gets whether the allowlist functionality is enabled. /// @return true is enabled, false if not. function getAllowListEnabled() external view returns (bool) { return i_allowlistEnabled; } /// @notice Gets the allowed addresses. /// @return The allowed addresses. function getAllowList() external view returns (address[] memory) { return s_allowlist.values(); } /// @notice Apply updates to the allow list. /// @param removes The addresses to be removed. /// @param adds The addresses to be added. function applyAllowListUpdates(address[] calldata removes, address[] calldata adds) external onlyOwner { _applyAllowListUpdates(removes, adds); } /// @notice Internal version of applyAllowListUpdates to allow for reuse in the constructor. function _applyAllowListUpdates(address[] memory removes, address[] memory adds) internal { if (!i_allowlistEnabled) revert AllowListNotEnabled(); for (uint256 i = 0; i < removes.length; ++i) { address toRemove = removes[i]; if (s_allowlist.remove(toRemove)) { emit AllowListRemove(toRemove); } } for (uint256 i = 0; i < adds.length; ++i) { address toAdd = adds[i]; if (toAdd == address(0)) { continue; } if (s_allowlist.add(toAdd)) { emit AllowListAdd(toAdd); } } } }
// 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: MIT pragma solidity ^0.8.24; import {Pool} from "@chainlink/contracts-ccip/src/v0.8/ccip/libraries/Pool.sol"; import {TokenPool} from "@chainlink/contracts-ccip/src/v0.8/ccip/pools/TokenPool.sol"; /** * @title Token Pool Abstract contract * @dev The TokenPoolAbstract contract is an abstract contract that implements the TokenPool interface. * It follows the `BurnMintTokenPoolAbstract` implementation but allowing for more flexibility by allowing * to override both the `_lockOrBurn` and `_releaseOrMint` functions. */ abstract contract TokenPoolAbstract is TokenPool { event LockedOrBurned(address indexed sender, uint256 amount); event ReleasedOrMinted(address indexed sender, address indexed recipient, uint256 amount); /** * @dev Locks or burns the tokens in the pool * The _validateLockOrBurn check is an essential security check * * Emits a {LockedOrBurned} event */ function lockOrBurn(Pool.LockOrBurnInV1 calldata lockOrBurnIn) external virtual override returns (Pool.LockOrBurnOutV1 memory) { _validateLockOrBurn(lockOrBurnIn); _lockOrBurn(lockOrBurnIn); emit LockedOrBurned(msg.sender, lockOrBurnIn.amount); return Pool.LockOrBurnOutV1({ destTokenAddress: getRemoteToken(lockOrBurnIn.remoteChainSelector), destPoolData: _encodeLocalDecimals() }); } /** * @dev Releases or mints the tokens from the pool * The _validateReleaseOrMint check is an essential security check * * Emits a {ReleasedOrMinted} event */ function releaseOrMint(Pool.ReleaseOrMintInV1 calldata releaseOrMintIn) public virtual override returns (Pool.ReleaseOrMintOutV1 memory) { _validateReleaseOrMint(releaseOrMintIn); // Calculate the local amount uint256 localAmount = _calculateLocalAmount(releaseOrMintIn.amount, _parseRemoteDecimals(releaseOrMintIn.sourcePoolData)); _releaseOrMint(releaseOrMintIn, localAmount); emit ReleasedOrMinted(msg.sender, releaseOrMintIn.receiver, localAmount); return Pool.ReleaseOrMintOutV1({destinationAmount: localAmount}); } /** * @dev Locks or burns the tokens in the pool */ function _lockOrBurn(Pool.LockOrBurnInV1 calldata lockOrBurnIn) internal virtual; /** * @dev Releases or mints the tokens in the pool */ function _releaseOrMint(Pool.ReleaseOrMintInV1 calldata releaseOrMintIn, uint256 localAmount) internal virtual; }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import {IERC20} from "@chainlink/contracts-ccip/src/v0.8/vendor/openzeppelin-solidity/v4.8.3/contracts/token/ERC20/IERC20.sol"; interface IXERC20 is IERC20 { error OnlySuperchainERC20Bridge(); /// @notice two rate storage slots per rate limit struct RateLimitMidPoint { //// -------------------------------------------- //// //// ------------------ SLOT 0 ------------------ //// //// -------------------------------------------- //// /// @notice the rate per second for this contract uint128 rateLimitPerSecond; /// @notice the cap of the buffer that can be used at once uint112 bufferCap; //// -------------------------------------------- //// //// ------------------ SLOT 1 ------------------ //// //// -------------------------------------------- //// /// @notice the last time the buffer was used by the contract uint32 lastBufferUsedTime; /// @notice the buffer at the timestamp of lastBufferUsedTime uint112 bufferStored; /// @notice the mid point of the buffer uint112 midPoint; } /// @notice struct for initializing rate limit struct RateLimitMidPointInfo { /// @notice the buffer cap for this bridge uint112 bufferCap; /// @notice the rate limit per second for this bridge uint128 rateLimitPerSecond; /// @notice the bridge address address bridge; } /// @notice Emits when a limit is set /// @param _bridge The address of the bridge we are setting the limit to /// @param _bufferCap The updated buffer cap for the bridge event BridgeLimitsSet(address indexed _bridge, uint256 _bufferCap); /// @notice The address of the lockbox contract function lockbox() external view returns (address); /// @notice Maps bridge address to bridge rate limits /// @param _bridge The bridge we are viewing the limits of /// @return _rateLimit The limits of the bridge function rateLimits(address _bridge) external view returns (RateLimitMidPoint memory _rateLimit); /// @notice Returns the max limit of a bridge /// @param _bridge The bridge we are viewing the limits of /// @return _limit The limit the bridge has function mintingMaxLimitOf(address _bridge) external view returns (uint256 _limit); /// @notice Returns the max limit of a bridge /// @param _bridge the bridge we are viewing the limits of /// @return _limit The limit the bridge has function burningMaxLimitOf(address _bridge) external view returns (uint256 _limit); /// @notice Returns the current limit of a bridge /// @param _bridge The bridge we are viewing the limits of /// @return _limit The limit the bridge has function mintingCurrentLimitOf(address _bridge) external view returns (uint256 _limit); /// @notice Returns the current limit of a bridge /// @param _bridge the bridge we are viewing the limits of /// @return _limit The limit the bridge has function burningCurrentLimitOf(address _bridge) external view returns (uint256 _limit); /// @notice Mints tokens for a user /// @dev Can only be called by a bridge /// @param _user The address of the user who needs tokens minted /// @param _amount The amount of tokens being minted function mint(address _user, uint256 _amount) external; /// @notice Burns tokens for a user /// @dev Can only be called by a bridge /// @param _user The address of the user who needs tokens burned /// @param _amount The amount of tokens being burned function burn(address _user, uint256 _amount) external; /// @notice Conform to the xERC20 setLimits interface /// @dev Can only be called if the bridge already has a buffer cap /// @param _bridge The bridge we are setting the limits of /// @param _newBufferCap The new buffer cap, uint112 max for unlimited function setBufferCap(address _bridge, uint256 _newBufferCap) external; /// @notice Sets rate limit per second for a bridge /// @dev Can only be called if the bridge already has a buffer cap /// @param _bridge The bridge we are setting the limits of /// @param _newRateLimitPerSecond The new rate limit per second function setRateLimitPerSecond(address _bridge, uint128 _newRateLimitPerSecond) external; /// @notice Adds a new bridge to the currently active bridges /// @param _newBridge The bridge to add function addBridge(RateLimitMidPointInfo memory _newBridge) external; /// @notice Removes a bridge from the currently active bridges /// deleting its buffer stored, buffer cap, mid point and last /// buffer used time /// @param _bridge The bridge to remove function removeBridge(address _bridge) external; /// @return The address of the Superchain ERC20 Bridge function SUPERCHAIN_ERC20_BRIDGE() external view returns (address); /// @notice Emitted when a crosschain transfer mints tokens. /// @param to Address of the account tokens are being minted for. /// @param amount Amount of tokens minted. event CrosschainMint(address indexed to, uint256 amount); /// @notice Emitted when a crosschain transfer burns tokens. /// @param from Address of the account tokens are being burned from. /// @param amount Amount of tokens burned. event CrosschainBurn(address indexed from, uint256 amount); /// @notice Mint tokens through a crosschain transfer. /// @param _to Address to mint tokens to. /// @param _amount Amount of tokens to mint. function crosschainMint(address _to, uint256 _amount) external; /// @notice Burn tokens through a crosschain transfer. /// @param _from Address to burn tokens from. /// @param _amount Amount of tokens to burn. function crosschainBurn(address _from, uint256 _amount) external; }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; interface IXERC20LockBox { /// @notice Emitted when tokens are deposited into the lockbox /// @param _sender The address of the user who deposited /// @param _amount The amount of tokens deposited event Deposit(address _sender, uint256 _amount); /// @notice Emitted when tokens are withdrawn from the lockbox /// @param _sender The address of the user who withdrew /// @param _amount The amount of tokens withdrawn event Withdraw(address _sender, uint256 _amount); /// @notice The XERC20 token of this contract function XERC20() external view returns (address); /// @notice The ERC20 token of this contract function ERC20() external view returns (address); /// @notice Deposit ERC20 tokens into the lockbox /// @param _amount The amount of tokens to deposit function deposit(uint256 _amount) external; /// @notice Withdraw ERC20 tokens from the lockbox /// @param _amount The amount of tokens to withdraw function withdraw(uint256 _amount) external; /// @notice Withdraw ERC20 tokens from the lockbox to a specific address /// @param _to The address to withdraw to /// @param _amount The amount of tokens to withdraw function withdrawTo(address _to, uint256 _amount) external; }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import {Pool} from "../libraries/Pool.sol"; import {IERC165} from "../../vendor/openzeppelin-solidity/v5.0.2/contracts/utils/introspection/IERC165.sol"; /// @notice Shared public interface for multiple V1 pool types. /// Each pool type handles a different child token model e.g. lock/unlock, mint/burn. interface IPoolV1 is IERC165 { /// @notice Lock tokens into the pool or burn the tokens. /// @param lockOrBurnIn Encoded data fields for the processing of tokens on the source chain. /// @return lockOrBurnOut Encoded data fields for the processing of tokens on the destination chain. function lockOrBurn( Pool.LockOrBurnInV1 calldata lockOrBurnIn ) external returns (Pool.LockOrBurnOutV1 memory lockOrBurnOut); /// @notice Releases or mints tokens to the receiver address. /// @param releaseOrMintIn All data required to release or mint tokens. /// @return releaseOrMintOut The amount of tokens released or minted on the local chain, denominated /// in the local token's decimals. /// @dev The offramp asserts that the balanceOf of the receiver has been incremented by exactly the number /// of tokens that is returned in ReleaseOrMintOutV1.destinationAmount. If the amounts do not match, the tx reverts. function releaseOrMint( Pool.ReleaseOrMintInV1 calldata releaseOrMintIn ) external returns (Pool.ReleaseOrMintOutV1 memory); /// @notice Checks whether a remote chain is supported in the token pool. /// @param remoteChainSelector The selector of the remote chain. /// @return true if the given chain is a permissioned remote chain. function isSupportedChain( uint64 remoteChainSelector ) external view returns (bool); /// @notice Returns if the token pool supports the given token. /// @param token The address of the token. /// @return true if the token is supported by the pool. function isSupportedToken( address token ) external view returns (bool); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /// @notice This interface contains the only RMN-related functions that might be used on-chain by other CCIP contracts. interface IRMN { /// @notice A Merkle root tagged with the address of the commit store contract it is destined for. struct TaggedRoot { address commitStore; bytes32 root; } /// @notice Callers MUST NOT cache the return value as a blessed tagged root could become unblessed. function isBlessed( TaggedRoot calldata taggedRoot ) external view returns (bool); /// @notice Iff there is an active global or legacy curse, this function returns true. function isCursed() external view returns (bool); /// @notice Iff there is an active global curse, or an active curse for `subject`, this function returns true. /// @param subject To check whether a particular chain is cursed, set to bytes16(uint128(chainSelector)). function isCursed( bytes16 subject ) external view returns (bool); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import {Client} from "../libraries/Client.sol"; interface IRouter { error OnlyOffRamp(); /// @notice Route the message to its intended receiver contract. /// @param message Client.Any2EVMMessage struct. /// @param gasForCallExactCheck of params for exec. /// @param gasLimit set of params for exec. /// @param receiver set of params for exec. /// @dev if the receiver is a contracts that signals support for CCIP execution through EIP-165. /// the contract is called. If not, only tokens are transferred. /// @return success A boolean value indicating whether the ccip message was received without errors. /// @return retBytes A bytes array containing return data form CCIP receiver. /// @return gasUsed the gas used by the external customer call. Does not include any overhead. function routeMessage( Client.Any2EVMMessage calldata message, uint16 gasForCallExactCheck, uint256 gasLimit, address receiver ) external returns (bool success, bytes memory retBytes, uint256 gasUsed); /// @notice Returns the configured onramp for a specific destination chain. /// @param destChainSelector The destination chain Id to get the onRamp for. /// @return onRampAddress The address of the onRamp. function getOnRamp( uint64 destChainSelector ) external view returns (address onRampAddress); /// @notice Return true if the given offRamp is a configured offRamp for the given source chain. /// @param sourceChainSelector The source chain selector to check. /// @param offRamp The address of the offRamp to check. function isOffRamp(uint64 sourceChainSelector, address offRamp) external view returns (bool isOffRamp); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.4; import {Ownable2Step} from "./Ownable2Step.sol"; /// @notice Sets the msg.sender to be the owner of the contract and does not set a pending owner. contract Ownable2StepMsgSender is Ownable2Step { constructor() Ownable2Step(msg.sender, address(0)) {} }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity ^0.8.4; /// @notice Implements Token Bucket rate limiting. /// @dev uint128 is safe for rate limiter state. /// - For USD value rate limiting, it can adequately store USD value in 18 decimals. /// - For ERC20 token amount rate limiting, all tokens that will be listed will have at most a supply of uint128.max /// tokens, and it will therefore not overflow the bucket. In exceptional scenarios where tokens consumed may be larger /// than uint128, e.g. compromised issuer, an enabled RateLimiter will check and revert. library RateLimiter { error BucketOverfilled(); error OnlyCallableByAdminOrOwner(); error TokenMaxCapacityExceeded(uint256 capacity, uint256 requested, address tokenAddress); error TokenRateLimitReached(uint256 minWaitInSeconds, uint256 available, address tokenAddress); error AggregateValueMaxCapacityExceeded(uint256 capacity, uint256 requested); error AggregateValueRateLimitReached(uint256 minWaitInSeconds, uint256 available); error InvalidRateLimitRate(Config rateLimiterConfig); error DisabledNonZeroRateLimit(Config config); error RateLimitMustBeDisabled(); event TokensConsumed(uint256 tokens); event ConfigChanged(Config config); struct TokenBucket { uint128 tokens; // ──────╮ Current number of tokens that are in the bucket. uint32 lastUpdated; // │ Timestamp in seconds of the last token refill, good for 100+ years. bool isEnabled; // ──────╯ Indication whether the rate limiting is enabled or not. uint128 capacity; // ────╮ Maximum number of tokens that can be in the bucket. uint128 rate; // ────────╯ Number of tokens per second that the bucket is refilled. } struct Config { bool isEnabled; // Indication whether the rate limiting should be enabled. uint128 capacity; // ────╮ Specifies the capacity of the rate limiter. uint128 rate; // ───────╯ Specifies the rate of the rate limiter. } /// @notice _consume removes the given tokens from the pool, lowering the rate tokens allowed to be /// consumed for subsequent calls. /// @param requestTokens The total tokens to be consumed from the bucket. /// @param tokenAddress The token to consume capacity for, use 0x0 to indicate aggregate value capacity. /// @dev Reverts when requestTokens exceeds bucket capacity or available tokens in the bucket. /// @dev emits removal of requestTokens if requestTokens is > 0. function _consume(TokenBucket storage s_bucket, uint256 requestTokens, address tokenAddress) internal { // If there is no value to remove or rate limiting is turned off, skip this step to reduce gas usage. if (!s_bucket.isEnabled || requestTokens == 0) { return; } uint256 tokens = s_bucket.tokens; uint256 capacity = s_bucket.capacity; uint256 timeDiff = block.timestamp - s_bucket.lastUpdated; if (timeDiff != 0) { if (tokens > capacity) revert BucketOverfilled(); // Refill tokens when arriving at a new block time. tokens = _calculateRefill(capacity, tokens, timeDiff, s_bucket.rate); s_bucket.lastUpdated = uint32(block.timestamp); } if (capacity < requestTokens) { // Token address 0 indicates consuming aggregate value rate limit capacity. if (tokenAddress == address(0)) revert AggregateValueMaxCapacityExceeded(capacity, requestTokens); revert TokenMaxCapacityExceeded(capacity, requestTokens, tokenAddress); } if (tokens < requestTokens) { uint256 rate = s_bucket.rate; // Wait required until the bucket is refilled enough to accept this value, round up to next higher second. // Consume is not guaranteed to succeed after wait time passes if there is competing traffic. // This acts as a lower bound of wait time. uint256 minWaitInSeconds = ((requestTokens - tokens) + (rate - 1)) / rate; if (tokenAddress == address(0)) revert AggregateValueRateLimitReached(minWaitInSeconds, tokens); revert TokenRateLimitReached(minWaitInSeconds, tokens, tokenAddress); } tokens -= requestTokens; // Downcast is safe here, as tokens is not larger than capacity. s_bucket.tokens = uint128(tokens); emit TokensConsumed(requestTokens); } /// @notice Gets the token bucket with its values for the block it was requested at. /// @return The token bucket. function _currentTokenBucketState( TokenBucket memory bucket ) internal view returns (TokenBucket memory) { // We update the bucket to reflect the status at the exact time of the call. This means we might need to refill a // part of the bucket based on the time that has passed since the last update. bucket.tokens = uint128(_calculateRefill(bucket.capacity, bucket.tokens, block.timestamp - bucket.lastUpdated, bucket.rate)); bucket.lastUpdated = uint32(block.timestamp); return bucket; } /// @notice Sets the rate limited config. /// @param s_bucket The token bucket. /// @param config The new config. function _setTokenBucketConfig(TokenBucket storage s_bucket, Config memory config) internal { // First update the bucket to make sure the proper rate is used for all the time up until the config change. uint256 timeDiff = block.timestamp - s_bucket.lastUpdated; if (timeDiff != 0) { s_bucket.tokens = uint128(_calculateRefill(s_bucket.capacity, s_bucket.tokens, timeDiff, s_bucket.rate)); s_bucket.lastUpdated = uint32(block.timestamp); } s_bucket.tokens = uint128(_min(config.capacity, s_bucket.tokens)); s_bucket.isEnabled = config.isEnabled; s_bucket.capacity = config.capacity; s_bucket.rate = config.rate; emit ConfigChanged(config); } /// @notice Validates the token bucket config. function _validateTokenBucketConfig(Config memory config, bool mustBeDisabled) internal pure { if (config.isEnabled) { if (config.rate >= config.capacity || config.rate == 0) { revert InvalidRateLimitRate(config); } if (mustBeDisabled) { revert RateLimitMustBeDisabled(); } } else { if (config.rate != 0 || config.capacity != 0) { revert DisabledNonZeroRateLimit(config); } } } /// @notice Calculate refilled tokens. /// @param capacity bucket capacity. /// @param tokens current bucket tokens. /// @param timeDiff block time difference since last refill. /// @param rate bucket refill rate. /// @return the value of tokens after refill. function _calculateRefill( uint256 capacity, uint256 tokens, uint256 timeDiff, uint256 rate ) private pure returns (uint256) { return _min(capacity, tokens + timeDiff * rate); } /// @notice Return the smallest of two integers. /// @param a first int. /// @param b second int. /// @return smallest. function _min(uint256 a, uint256 b) internal pure returns (uint256) { return a < b ? a : b; } }
// 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/IERC20Metadata.sol) pragma solidity ^0.8.0; import "../IERC20.sol"; /** * @dev Interface for the optional metadata functions from the ERC20 standard. * * _Available since v4.1._ */ interface IERC20Metadata is IERC20 { /** * @dev Returns the name of the token. */ function name() external view returns (string memory); /** * @dev Returns the symbol of the token. */ function symbol() external view returns (string memory); /** * @dev Returns the decimals places of the token. */ function decimals() external view returns (uint8); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (utils/introspection/IERC165.sol) pragma solidity ^0.8.20; /** * @dev Interface of the ERC165 standard, as defined in the * https://eips.ethereum.org/EIPS/eip-165[EIP]. * * Implementers can declare support of contract interfaces, which can then be * queried by others ({ERC165Checker}). * * For an implementation, see {ERC165}. */ interface IERC165 { /** * @dev Returns true if this contract implements the interface defined by * `interfaceId`. See the corresponding * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] * to learn more about how these ids are created. * * This function call must use less than 30 000 gas. */ function supportsInterface(bytes4 interfaceId) external view returns (bool); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (utils/structs/EnumerableSet.sol) // This file was procedurally generated from scripts/generate/templates/EnumerableSet.js. pragma solidity ^0.8.20; /** * @dev Library for managing * https://en.wikipedia.org/wiki/Set_(abstract_data_type)[sets] of primitive * types. * * Sets have the following properties: * * - Elements are added, removed, and checked for existence in constant time * (O(1)). * - Elements are enumerated in O(n). No guarantees are made on the ordering. * * ```solidity * contract Example { * // Add the library methods * using EnumerableSet for EnumerableSet.AddressSet; * * // Declare a set state variable * EnumerableSet.AddressSet private mySet; * } * ``` * * As of v3.3.0, sets of type `bytes32` (`Bytes32Set`), `address` (`AddressSet`) * and `uint256` (`UintSet`) are supported. * * [WARNING] * ==== * Trying to delete such a structure from storage will likely result in data corruption, rendering the structure * unusable. * See https://github.com/ethereum/solidity/pull/11843[ethereum/solidity#11843] for more info. * * In order to clean an EnumerableSet, you can either remove all elements one by one or create a fresh instance using an * array of EnumerableSet. * ==== */ library EnumerableSet { // To implement this library for multiple types with as little code // repetition as possible, we write it in terms of a generic Set type with // bytes32 values. // The Set implementation uses private functions, and user-facing // implementations (such as AddressSet) are just wrappers around the // underlying Set. // This means that we can only create new EnumerableSets for types that fit // in bytes32. struct Set { // Storage of set values bytes32[] _values; // Position is the index of the value in the `values` array plus 1. // Position 0 is used to mean a value is not in the set. mapping(bytes32 value => uint256) _positions; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function _add(Set storage set, bytes32 value) private returns (bool) { if (!_contains(set, value)) { set._values.push(value); // The value is stored at length-1, but we add 1 to all indexes // and use 0 as a sentinel value set._positions[value] = set._values.length; return true; } else { return false; } } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function _remove(Set storage set, bytes32 value) private returns (bool) { // We cache the value's position to prevent multiple reads from the same storage slot uint256 position = set._positions[value]; if (position != 0) { // Equivalent to contains(set, value) // To delete an element from the _values array in O(1), we swap the element to delete with the last one in // the array, and then remove the last element (sometimes called as 'swap and pop'). // This modifies the order of the array, as noted in {at}. uint256 valueIndex = position - 1; uint256 lastIndex = set._values.length - 1; if (valueIndex != lastIndex) { bytes32 lastValue = set._values[lastIndex]; // Move the lastValue to the index where the value to delete is set._values[valueIndex] = lastValue; // Update the tracked position of the lastValue (that was just moved) set._positions[lastValue] = position; } // Delete the slot where the moved value was stored set._values.pop(); // Delete the tracked position for the deleted slot delete set._positions[value]; return true; } else { return false; } } /** * @dev Returns true if the value is in the set. O(1). */ function _contains(Set storage set, bytes32 value) private view returns (bool) { return set._positions[value] != 0; } /** * @dev Returns the number of values on the set. O(1). */ function _length(Set storage set) private view returns (uint256) { return set._values.length; } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function _at(Set storage set, uint256 index) private view returns (bytes32) { return set._values[index]; } /** * @dev Return the entire set in an array * * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that * this function has an unbounded cost, and using it as part of a state-changing function may render the function * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block. */ function _values(Set storage set) private view returns (bytes32[] memory) { return set._values; } // Bytes32Set struct Bytes32Set { Set _inner; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function add(Bytes32Set storage set, bytes32 value) internal returns (bool) { return _add(set._inner, value); } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function remove(Bytes32Set storage set, bytes32 value) internal returns (bool) { return _remove(set._inner, value); } /** * @dev Returns true if the value is in the set. O(1). */ function contains(Bytes32Set storage set, bytes32 value) internal view returns (bool) { return _contains(set._inner, value); } /** * @dev Returns the number of values in the set. O(1). */ function length(Bytes32Set storage set) internal view returns (uint256) { return _length(set._inner); } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function at(Bytes32Set storage set, uint256 index) internal view returns (bytes32) { return _at(set._inner, index); } /** * @dev Return the entire set in an array * * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that * this function has an unbounded cost, and using it as part of a state-changing function may render the function * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block. */ function values(Bytes32Set storage set) internal view returns (bytes32[] memory) { bytes32[] memory store = _values(set._inner); bytes32[] memory result; /// @solidity memory-safe-assembly assembly { result := store } return result; } // AddressSet struct AddressSet { Set _inner; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function add(AddressSet storage set, address value) internal returns (bool) { return _add(set._inner, bytes32(uint256(uint160(value)))); } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function remove(AddressSet storage set, address value) internal returns (bool) { return _remove(set._inner, bytes32(uint256(uint160(value)))); } /** * @dev Returns true if the value is in the set. O(1). */ function contains(AddressSet storage set, address value) internal view returns (bool) { return _contains(set._inner, bytes32(uint256(uint160(value)))); } /** * @dev Returns the number of values in the set. O(1). */ function length(AddressSet storage set) internal view returns (uint256) { return _length(set._inner); } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function at(AddressSet storage set, uint256 index) internal view returns (address) { return address(uint160(uint256(_at(set._inner, index)))); } /** * @dev Return the entire set in an array * * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that * this function has an unbounded cost, and using it as part of a state-changing function may render the function * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block. */ function values(AddressSet storage set) internal view returns (address[] memory) { bytes32[] memory store = _values(set._inner); address[] memory result; /// @solidity memory-safe-assembly assembly { result := store } return result; } // UintSet struct UintSet { Set _inner; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function add(UintSet storage set, uint256 value) internal returns (bool) { return _add(set._inner, bytes32(value)); } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function remove(UintSet storage set, uint256 value) internal returns (bool) { return _remove(set._inner, bytes32(value)); } /** * @dev Returns true if the value is in the set. O(1). */ function contains(UintSet storage set, uint256 value) internal view returns (bool) { return _contains(set._inner, bytes32(value)); } /** * @dev Returns the number of values in the set. O(1). */ function length(UintSet storage set) internal view returns (uint256) { return _length(set._inner); } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function at(UintSet storage set, uint256 index) internal view returns (uint256) { return uint256(_at(set._inner, index)); } /** * @dev Return the entire set in an array * * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that * this function has an unbounded cost, and using it as part of a state-changing function may render the function * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block. */ function values(UintSet storage set) internal view returns (uint256[] memory) { bytes32[] memory store = _values(set._inner); uint256[] memory result; /// @solidity memory-safe-assembly assembly { result := store } return result; } }
// 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: MIT pragma solidity ^0.8.0; // End consumer library. library Client { /// @dev RMN depends on this struct, if changing, please notify the RMN maintainers. struct EVMTokenAmount { address token; // token address on the local chain. uint256 amount; // Amount of tokens. } struct Any2EVMMessage { bytes32 messageId; // MessageId corresponding to ccipSend on source. uint64 sourceChainSelector; // Source chain selector. bytes sender; // abi.decode(sender) if coming from an EVM chain. bytes data; // payload sent in original message. EVMTokenAmount[] destTokenAmounts; // Tokens and their amounts in their destination chain representation. } // If extraArgs is empty bytes, the default is 200k gas limit. struct EVM2AnyMessage { bytes receiver; // abi.encode(receiver address) for dest EVM chains. bytes data; // Data payload. EVMTokenAmount[] tokenAmounts; // Token transfers. address feeToken; // Address of feeToken. address(0) means you will send msg.value. bytes extraArgs; // Populate this with _argsToBytes(EVMExtraArgsV2). } // bytes4(keccak256("CCIP EVMExtraArgsV1")); bytes4 public constant EVM_EXTRA_ARGS_V1_TAG = 0x97a657c9; struct EVMExtraArgsV1 { uint256 gasLimit; } function _argsToBytes( EVMExtraArgsV1 memory extraArgs ) internal pure returns (bytes memory bts) { return abi.encodeWithSelector(EVM_EXTRA_ARGS_V1_TAG, extraArgs); } // bytes4(keccak256("CCIP EVMExtraArgsV2")); bytes4 public constant EVM_EXTRA_ARGS_V2_TAG = 0x181dcf10; // bytes4(keccak256("CCIP SVMExtraArgsV1")); bytes4 public constant SVM_EXTRA_ARGS_V1_TAG = 0x1f3b3aba; /// @dev The maximum number of accounts that can be passed in SVMExtraArgs. uint256 public constant SVM_EXTRA_ARGS_MAX_ACCOUNTS = 64; /// @param gasLimit: gas limit for the callback on the destination chain. /// @param allowOutOfOrderExecution: if true, it indicates that the message can be executed in any order relative to /// other messages from the same sender. This value's default varies by chain. On some chains, a particular value is /// enforced, meaning if the expected value is not set, the message request will revert. struct EVMExtraArgsV2 { uint256 gasLimit; bool allowOutOfOrderExecution; } struct SVMExtraArgsV1 { uint32 computeUnits; uint64 accountIsWritableBitmap; bool allowOutOfOrderExecution; bytes32 tokenReceiver; bytes32[] accounts; } function _argsToBytes( EVMExtraArgsV2 memory extraArgs ) internal pure returns (bytes memory bts) { return abi.encodeWithSelector(EVM_EXTRA_ARGS_V2_TAG, extraArgs); } function _svmArgsToBytes( SVMExtraArgsV1 memory extraArgs ) internal pure returns (bytes memory bts) { return abi.encodeWithSelector(SVM_EXTRA_ARGS_V1_TAG, extraArgs); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.4; import {IOwnable} from "../interfaces/IOwnable.sol"; /// @notice A minimal contract that implements 2-step ownership transfer and nothing more. It's made to be minimal /// to reduce the impact of the bytecode size on any contract that inherits from it. contract Ownable2Step is IOwnable { /// @notice The pending owner is the address to which ownership may be transferred. address private s_pendingOwner; /// @notice The owner is the current owner of the contract. /// @dev The owner is the second storage variable so any implementing contract could pack other state with it /// instead of the much less used s_pendingOwner. address private s_owner; error OwnerCannotBeZero(); error MustBeProposedOwner(); error CannotTransferToSelf(); error OnlyCallableByOwner(); event OwnershipTransferRequested(address indexed from, address indexed to); event OwnershipTransferred(address indexed from, address indexed to); constructor(address newOwner, address pendingOwner) { if (newOwner == address(0)) { revert OwnerCannotBeZero(); } s_owner = newOwner; if (pendingOwner != address(0)) { _transferOwnership(pendingOwner); } } /// @notice Get the current owner function owner() public view override returns (address) { return s_owner; } /// @notice Allows an owner to begin transferring ownership to a new address. The new owner needs to call /// `acceptOwnership` to accept the transfer before any permissions are changed. /// @param to The address to which ownership will be transferred. function transferOwnership(address to) public override onlyOwner { _transferOwnership(to); } /// @notice validate, transfer ownership, and emit relevant events /// @param to The address to which ownership will be transferred. function _transferOwnership(address to) private { if (to == msg.sender) { revert CannotTransferToSelf(); } s_pendingOwner = to; emit OwnershipTransferRequested(s_owner, to); } /// @notice Allows an ownership transfer to be completed by the recipient. function acceptOwnership() external override { if (msg.sender != s_pendingOwner) { revert MustBeProposedOwner(); } address oldOwner = s_owner; s_owner = msg.sender; s_pendingOwner = address(0); emit OwnershipTransferred(oldOwner, msg.sender); } /// @notice validate access function _validateOwnership() internal view { if (msg.sender != s_owner) { revert OnlyCallableByOwner(); } } /// @notice Reverts if called by anyone other than the contract owner. modifier onlyOwner() { _validateOwnership(); _; } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; interface IOwnable { function owner() external returns (address); function transferOwnership(address recipient) external; function acceptOwnership() external; }
{ "remappings": [ "forge-std/=lib/forge-std/src/", "@openzeppelin5/contracts/=node_modules/@openzeppelin/contracts/", "@arbitrum/=node_modules/@arbitrum/", "@chainlink/=node_modules/@chainlink/", "@eth-optimism/=node_modules/@eth-optimism/", "@hyperlane-xyz/=node_modules/@hyperlane-xyz/", "@offchainlabs/=node_modules/@offchainlabs/", "@openzeppelin/=node_modules/@openzeppelin/", "@scroll-tech/=node_modules/@scroll-tech/", "@zksync/=node_modules/@zksync/" ], "optimizer": { "enabled": true, "runs": 100000 }, "metadata": { "useLiteralContent": false, "bytecodeHash": "ipfs", "appendCBOR": true }, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } }, "evmVersion": "paris", "viaIR": false, "libraries": { "node_modules/@hyperlane-xyz/superchain-contracts/src/libraries/rateLimits/RateLimitMidpointCommonLibrary.sol": { "RateLimitMidpointCommonLibrary": "0x7dA3B5aF93F8787CED12b464798C5985216eD9a9" } } }
Contract ABI
API[{"inputs":[{"internalType":"address","name":"lockbox","type":"address"},{"internalType":"uint8","name":"localTokenDecimals","type":"uint8"},{"internalType":"address[]","name":"allowlist","type":"address[]"},{"internalType":"address","name":"rmnProxy","type":"address"},{"internalType":"address","name":"router","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[{"internalType":"uint256","name":"capacity","type":"uint256"},{"internalType":"uint256","name":"requested","type":"uint256"}],"name":"AggregateValueMaxCapacityExceeded","type":"error"},{"inputs":[{"internalType":"uint256","name":"minWaitInSeconds","type":"uint256"},{"internalType":"uint256","name":"available","type":"uint256"}],"name":"AggregateValueRateLimitReached","type":"error"},{"inputs":[],"name":"AllowListNotEnabled","type":"error"},{"inputs":[],"name":"BucketOverfilled","type":"error"},{"inputs":[{"internalType":"address","name":"caller","type":"address"}],"name":"CallerIsNotARampOnRouter","type":"error"},{"inputs":[],"name":"CannotTransferToSelf","type":"error"},{"inputs":[{"internalType":"uint64","name":"chainSelector","type":"uint64"}],"name":"ChainAlreadyExists","type":"error"},{"inputs":[{"internalType":"uint64","name":"remoteChainSelector","type":"uint64"}],"name":"ChainNotAllowed","type":"error"},{"inputs":[],"name":"CursedByRMN","type":"error"},{"inputs":[{"components":[{"internalType":"bool","name":"isEnabled","type":"bool"},{"internalType":"uint128","name":"capacity","type":"uint128"},{"internalType":"uint128","name":"rate","type":"uint128"}],"internalType":"struct RateLimiter.Config","name":"config","type":"tuple"}],"name":"DisabledNonZeroRateLimit","type":"error"},{"inputs":[{"internalType":"uint256","name":"lockboxBalance","type":"uint256"},{"internalType":"uint256","name":"localAmount","type":"uint256"}],"name":"InsufficientLockboxBalance","type":"error"},{"inputs":[{"internalType":"uint8","name":"expected","type":"uint8"},{"internalType":"uint8","name":"actual","type":"uint8"}],"name":"InvalidDecimalArgs","type":"error"},{"inputs":[{"components":[{"internalType":"bool","name":"isEnabled","type":"bool"},{"internalType":"uint128","name":"capacity","type":"uint128"},{"internalType":"uint128","name":"rate","type":"uint128"}],"internalType":"struct RateLimiter.Config","name":"rateLimiterConfig","type":"tuple"}],"name":"InvalidRateLimitRate","type":"error"},{"inputs":[{"internalType":"bytes","name":"sourcePoolData","type":"bytes"}],"name":"InvalidRemoteChainDecimals","type":"error"},{"inputs":[{"internalType":"uint64","name":"remoteChainSelector","type":"uint64"},{"internalType":"bytes","name":"remotePoolAddress","type":"bytes"}],"name":"InvalidRemotePoolForChain","type":"error"},{"inputs":[{"internalType":"bytes","name":"sourcePoolAddress","type":"bytes"}],"name":"InvalidSourcePoolAddress","type":"error"},{"inputs":[{"internalType":"address","name":"token","type":"address"}],"name":"InvalidToken","type":"error"},{"inputs":[],"name":"MismatchedArrayLengths","type":"error"},{"inputs":[],"name":"MustBeProposedOwner","type":"error"},{"inputs":[{"internalType":"uint64","name":"remoteChainSelector","type":"uint64"}],"name":"NonExistentChain","type":"error"},{"inputs":[],"name":"OnlyCallableByOwner","type":"error"},{"inputs":[{"internalType":"uint8","name":"remoteDecimals","type":"uint8"},{"internalType":"uint8","name":"localDecimals","type":"uint8"},{"internalType":"uint256","name":"remoteAmount","type":"uint256"}],"name":"OverflowDetected","type":"error"},{"inputs":[],"name":"OwnerCannotBeZero","type":"error"},{"inputs":[{"internalType":"uint64","name":"remoteChainSelector","type":"uint64"},{"internalType":"bytes","name":"remotePoolAddress","type":"bytes"}],"name":"PoolAlreadyAdded","type":"error"},{"inputs":[],"name":"RateLimitMustBeDisabled","type":"error"},{"inputs":[{"internalType":"address","name":"sender","type":"address"}],"name":"SenderNotAllowed","type":"error"},{"inputs":[{"internalType":"uint256","name":"capacity","type":"uint256"},{"internalType":"uint256","name":"requested","type":"uint256"},{"internalType":"address","name":"tokenAddress","type":"address"}],"name":"TokenMaxCapacityExceeded","type":"error"},{"inputs":[{"internalType":"uint256","name":"minWaitInSeconds","type":"uint256"},{"internalType":"uint256","name":"available","type":"uint256"},{"internalType":"address","name":"tokenAddress","type":"address"}],"name":"TokenRateLimitReached","type":"error"},{"inputs":[{"internalType":"address","name":"caller","type":"address"}],"name":"Unauthorized","type":"error"},{"inputs":[],"name":"ZeroAddressNotAllowed","type":"error"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"sender","type":"address"}],"name":"AllowListAdd","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"sender","type":"address"}],"name":"AllowListRemove","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"sender","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Burned","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint64","name":"remoteChainSelector","type":"uint64"},{"indexed":false,"internalType":"bytes","name":"remoteToken","type":"bytes"},{"components":[{"internalType":"bool","name":"isEnabled","type":"bool"},{"internalType":"uint128","name":"capacity","type":"uint128"},{"internalType":"uint128","name":"rate","type":"uint128"}],"indexed":false,"internalType":"struct RateLimiter.Config","name":"outboundRateLimiterConfig","type":"tuple"},{"components":[{"internalType":"bool","name":"isEnabled","type":"bool"},{"internalType":"uint128","name":"capacity","type":"uint128"},{"internalType":"uint128","name":"rate","type":"uint128"}],"indexed":false,"internalType":"struct RateLimiter.Config","name":"inboundRateLimiterConfig","type":"tuple"}],"name":"ChainAdded","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint64","name":"remoteChainSelector","type":"uint64"},{"components":[{"internalType":"bool","name":"isEnabled","type":"bool"},{"internalType":"uint128","name":"capacity","type":"uint128"},{"internalType":"uint128","name":"rate","type":"uint128"}],"indexed":false,"internalType":"struct RateLimiter.Config","name":"outboundRateLimiterConfig","type":"tuple"},{"components":[{"internalType":"bool","name":"isEnabled","type":"bool"},{"internalType":"uint128","name":"capacity","type":"uint128"},{"internalType":"uint128","name":"rate","type":"uint128"}],"indexed":false,"internalType":"struct RateLimiter.Config","name":"inboundRateLimiterConfig","type":"tuple"}],"name":"ChainConfigured","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint64","name":"remoteChainSelector","type":"uint64"}],"name":"ChainRemoved","type":"event"},{"anonymous":false,"inputs":[{"components":[{"internalType":"bool","name":"isEnabled","type":"bool"},{"internalType":"uint128","name":"capacity","type":"uint128"},{"internalType":"uint128","name":"rate","type":"uint128"}],"indexed":false,"internalType":"struct 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RateLimiter.Config","name":"outboundRateLimiterConfig","type":"tuple"},{"components":[{"internalType":"bool","name":"isEnabled","type":"bool"},{"internalType":"uint128","name":"capacity","type":"uint128"},{"internalType":"uint128","name":"rate","type":"uint128"}],"internalType":"struct RateLimiter.Config","name":"inboundRateLimiterConfig","type":"tuple"}],"internalType":"struct TokenPool.ChainUpdate[]","name":"chainsToAdd","type":"tuple[]"}],"name":"applyChainUpdates","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"getAllowList","outputs":[{"internalType":"address[]","name":"","type":"address[]"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getAllowListEnabled","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint64","name":"remoteChainSelector","type":"uint64"}],"name":"getCurrentInboundRateLimiterState","outputs":[{"components":[{"internalType":"uint128","name":"tokens","type":"uint128"},{"internalType":"uint32","name":"lastUpdated","type":"uint32"},{"internalType":"bool","name":"isEnabled","type":"bool"},{"internalType":"uint128","name":"capacity","type":"uint128"},{"internalType":"uint128","name":"rate","type":"uint128"}],"internalType":"struct RateLimiter.TokenBucket","name":"","type":"tuple"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint64","name":"remoteChainSelector","type":"uint64"}],"name":"getCurrentOutboundRateLimiterState","outputs":[{"components":[{"internalType":"uint128","name":"tokens","type":"uint128"},{"internalType":"uint32","name":"lastUpdated","type":"uint32"},{"internalType":"bool","name":"isEnabled","type":"bool"},{"internalType":"uint128","name":"capacity","type":"uint128"},{"internalType":"uint128","name":"rate","type":"uint128"}],"internalType":"struct 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Pool.LockOrBurnInV1","name":"lockOrBurnIn","type":"tuple"}],"name":"lockOrBurn","outputs":[{"components":[{"internalType":"bytes","name":"destTokenAddress","type":"bytes"},{"internalType":"bytes","name":"destPoolData","type":"bytes"}],"internalType":"struct Pool.LockOrBurnOutV1","name":"","type":"tuple"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"components":[{"internalType":"bytes","name":"originalSender","type":"bytes"},{"internalType":"uint64","name":"remoteChainSelector","type":"uint64"},{"internalType":"address","name":"receiver","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"address","name":"localToken","type":"address"},{"internalType":"bytes","name":"sourcePoolAddress","type":"bytes"},{"internalType":"bytes","name":"sourcePoolData","type":"bytes"},{"internalType":"bytes","name":"offchainTokenData","type":"bytes"}],"internalType":"struct Pool.ReleaseOrMintInV1","name":"releaseOrMintIn","type":"tuple"}],"name":"releaseOrMint","outputs":[{"components":[{"internalType":"uint256","name":"destinationAmount","type":"uint256"}],"internalType":"struct Pool.ReleaseOrMintOutV1","name":"","type":"tuple"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint64","name":"remoteChainSelector","type":"uint64"},{"internalType":"bytes","name":"remotePoolAddress","type":"bytes"}],"name":"removeRemotePool","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint64","name":"remoteChainSelector","type":"uint64"},{"components":[{"internalType":"bool","name":"isEnabled","type":"bool"},{"internalType":"uint128","name":"capacity","type":"uint128"},{"internalType":"uint128","name":"rate","type":"uint128"}],"internalType":"struct RateLimiter.Config","name":"outboundConfig","type":"tuple"},{"components":[{"internalType":"bool","name":"isEnabled","type":"bool"},{"internalType":"uint128","name":"capacity","type":"uint128"},{"internalType":"uint128","name":"rate","type":"uint128"}],"internalType":"struct RateLimiter.Config","name":"inboundConfig","type":"tuple"}],"name":"setChainRateLimiterConfig","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint64[]","name":"remoteChainSelectors","type":"uint64[]"},{"components":[{"internalType":"bool","name":"isEnabled","type":"bool"},{"internalType":"uint128","name":"capacity","type":"uint128"},{"internalType":"uint128","name":"rate","type":"uint128"}],"internalType":"struct RateLimiter.Config[]","name":"outboundConfigs","type":"tuple[]"},{"components":[{"internalType":"bool","name":"isEnabled","type":"bool"},{"internalType":"uint128","name":"capacity","type":"uint128"},{"internalType":"uint128","name":"rate","type":"uint128"}],"internalType":"struct RateLimiter.Config[]","name":"inboundConfigs","type":"tuple[]"}],"name":"setChainRateLimiterConfigs","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"rateLimitAdmin","type":"address"}],"name":"setRateLimitAdmin","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newRouter","type":"address"}],"name":"setRouter","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes4","name":"interfaceId","type":"bytes4"}],"name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"pure","type":"function"},{"inputs":[{"internalType":"address","name":"to","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"}]
Contract Creation Code
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
00000000000000000000000032c3a8f7ebe525d9d8c336a814c1bcb3ce621712000000000000000000000000000000000000000000000000000000000000000600000000000000000000000000000000000000000000000000000000000000a00000000000000000000000007a394c616a7347dc91c40159929e1c9a435cb83a000000000000000000000000b00e95b773528e2ea724db06b75113f239d15dca0000000000000000000000000000000000000000000000000000000000000000
-----Decoded View---------------
Arg [0] : lockbox (address): 0x32c3a8f7eBe525d9d8C336A814c1Bcb3Ce621712
Arg [1] : localTokenDecimals (uint8): 6
-----Encoded View---------------
6 Constructor Arguments found :
Arg [0] : 00000000000000000000000032c3a8f7ebe525d9d8c336a814c1bcb3ce621712
Arg [1] : 0000000000000000000000000000000000000000000000000000000000000006
Arg [2] : 00000000000000000000000000000000000000000000000000000000000000a0
Arg [3] : 0000000000000000000000007a394c616a7347dc91c40159929e1c9a435cb83a
Arg [4] : 000000000000000000000000b00e95b773528e2ea724db06b75113f239d15dca
Arg [5] : 0000000000000000000000000000000000000000000000000000000000000000
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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.