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Latest 7 from a total of 7 transactions
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Transfer Ownersh... | 8204693 | 248 days ago | IN | 0 POL | 0.00178681 | ||||
Apply Chain Upda... | 6897838 | 281 days ago | IN | 0 POL | 0.00017121 | ||||
Apply Chain Upda... | 6047337 | 303 days ago | IN | 0 POL | 0.00017122 | ||||
Apply Chain Upda... | 6047123 | 303 days ago | IN | 0 POL | 0.00025744 | ||||
Apply Chain Upda... | 6044387 | 303 days ago | IN | 0 POL | 0.00017122 | ||||
Apply Chain Upda... | 6043038 | 303 days ago | IN | 0 POL | 0.00017122 | ||||
Apply Chain Upda... | 6042943 | 303 days ago | IN | 0 POL | 0.00018832 |
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Contract Name:
BurnMintTokenPool
Compiler Version
v0.8.19+commit.7dd6d404
Optimization Enabled:
Yes with 26000 runs
Other Settings:
paris EvmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: BUSL-1.1 pragma solidity 0.8.19; import {ITypeAndVersion} from "../../shared/interfaces/ITypeAndVersion.sol"; import {IBurnMintERC20} from "../../shared/token/ERC20/IBurnMintERC20.sol"; import {BurnMintTokenPoolAbstract} from "./BurnMintTokenPoolAbstract.sol"; import {TokenPool} from "./TokenPool.sol"; /// @notice This pool mints and burns a 3rd-party token. /// @dev Pool whitelisting mode is set in the constructor and cannot be modified later. /// It either accepts any address as originalSender, or only accepts whitelisted originalSender. /// The only way to change whitelisting mode is to deploy a new pool. /// If that is expected, please make sure the token's burner/minter roles are adjustable. contract BurnMintTokenPool is BurnMintTokenPoolAbstract, ITypeAndVersion { string public constant override typeAndVersion = "BurnMintTokenPool 1.4.0"; constructor( IBurnMintERC20 token, address[] memory allowlist, address armProxy, address router ) TokenPool(token, allowlist, armProxy, router) {} /// @inheritdoc BurnMintTokenPoolAbstract function _burn(uint256 amount) internal virtual override { IBurnMintERC20(address(i_token)).burn(amount); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; interface ITypeAndVersion { function typeAndVersion() external pure returns (string memory); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import {IERC20} from "../../../vendor/openzeppelin-solidity/v4.8.3/contracts/token/ERC20/IERC20.sol"; interface IBurnMintERC20 is IERC20 { /// @notice Mints new tokens for a given address. /// @param account The address to mint the new tokens to. /// @param amount The number of tokens to be minted. /// @dev this function increases the total supply. function mint(address account, uint256 amount) external; /// @notice Burns tokens from the sender. /// @param amount The number of tokens to be burned. /// @dev this function decreases the total supply. function burn(uint256 amount) external; /// @notice Burns tokens from a given address.. /// @param account The address to burn tokens from. /// @param amount The number of tokens to be burned. /// @dev this function decreases the total supply. function burn(address account, uint256 amount) external; /// @notice Burns tokens from a given address.. /// @param account The address to burn tokens from. /// @param amount The number of tokens to be burned. /// @dev this function decreases the total supply. function burnFrom(address account, uint256 amount) external; }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity 0.8.19; import {IBurnMintERC20} from "../../shared/token/ERC20/IBurnMintERC20.sol"; import {TokenPool} from "./TokenPool.sol"; abstract contract BurnMintTokenPoolAbstract is TokenPool { /// @notice Contains the specific burn call for a pool. /// @dev overriding this method allows us to create pools with different burn signatures /// without duplicating the underlying logic. function _burn(uint256 amount) internal virtual; /// @notice Burn the token in the pool /// @param amount Amount to burn /// @dev The whenHealthy check is important to ensure that even if a ramp is compromised /// we're able to stop token movement via ARM. function lockOrBurn( address originalSender, bytes calldata, uint256 amount, uint64 remoteChainSelector, bytes calldata ) external virtual override onlyOnRamp(remoteChainSelector) checkAllowList(originalSender) whenHealthy returns (bytes memory) { _consumeOutboundRateLimit(remoteChainSelector, amount); _burn(amount); emit Burned(msg.sender, amount); return ""; } /// @notice Mint tokens from the pool to the recipient /// @param receiver Recipient address /// @param amount Amount to mint /// @dev The whenHealthy check is important to ensure that even if a ramp is compromised /// we're able to stop token movement via ARM. function releaseOrMint( bytes memory, address receiver, uint256 amount, uint64 remoteChainSelector, bytes memory ) external virtual override whenHealthy onlyOffRamp(remoteChainSelector) { _consumeInboundRateLimit(remoteChainSelector, amount); IBurnMintERC20(address(i_token)).mint(receiver, amount); emit Minted(msg.sender, receiver, amount); } }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity 0.8.19; import {IARM} from "../interfaces/IARM.sol"; import {IRouter} from "../interfaces/IRouter.sol"; import {IPool} from "../interfaces/pools/IPool.sol"; import {OwnerIsCreator} from "../../shared/access/OwnerIsCreator.sol"; import {RateLimiter} from "../libraries/RateLimiter.sol"; import {IERC20} from "../../vendor/openzeppelin-solidity/v4.8.3/contracts/token/ERC20/IERC20.sol"; import {IERC165} from "../../vendor/openzeppelin-solidity/v4.8.3/contracts/utils/introspection/IERC165.sol"; import {EnumerableSet} from "../../vendor/openzeppelin-solidity/v4.8.3/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. abstract contract TokenPool is IPool, OwnerIsCreator, IERC165 { 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 BadARMSignal(); error ChainAlreadyExists(uint64 chainSelector); 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, RateLimiter.Config outboundRateLimiterConfig, RateLimiter.Config inboundRateLimiterConfig ); event ChainConfigured( uint64 remoteChainSelector, RateLimiter.Config outboundRateLimiterConfig, RateLimiter.Config inboundRateLimiterConfig ); event ChainRemoved(uint64 remoteChainSelector); event AllowListAdd(address sender); event AllowListRemove(address sender); event RouterUpdated(address oldRouter, address newRouter); struct ChainUpdate { uint64 remoteChainSelector; // ──╮ Remote chain selector bool allowed; // ────────────────╯ Whether the chain is allowed 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 } /// @dev The bridgeable token that is managed by this pool. IERC20 internal immutable i_token; /// @dev The address of the arm proxy address internal immutable i_armProxy; /// @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 uin256 format because of the EnumerableSet implementation. EnumerableSet.UintSet internal s_remoteChainSelectors; /// @dev Outbound rate limits. Corresponds to the inbound rate limit for the pool /// on the remote chain. mapping(uint64 remoteChainSelector => RateLimiter.TokenBucket) internal s_outboundRateLimits; /// @dev Inbound rate limits. This allows per destination chain /// token issuer specified rate limiting (e.g. issuers may trust chains to varying /// degrees and prefer different limits) mapping(uint64 remoteChainSelector => RateLimiter.TokenBucket) internal s_inboundRateLimits; constructor(IERC20 token, address[] memory allowlist, address armProxy, address router) { if (address(token) == address(0) || router == address(0)) revert ZeroAddressNotAllowed(); i_token = token; i_armProxy = armProxy; 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); } } /// @notice Get ARM proxy address /// @return armProxy Address of arm proxy function getArmProxy() public view returns (address armProxy) { return i_armProxy; } /// @inheritdoc IPool function getToken() public view override returns (IERC20 token) { return i_token; } /// @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); } /// @inheritdoc IERC165 function supportsInterface(bytes4 interfaceId) public pure virtual override returns (bool) { return interfaceId == type(IPool).interfaceId || interfaceId == type(IERC165).interfaceId; } // ================================================================ // │ Chain permissions │ // ================================================================ /// @notice Checks whether a chain selector is permissioned on this contract. /// @return true if the given chain selector is a permissioned remote chain. 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. /// @dev Only callable by the owner /// @param chains 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. function applyChainUpdates(ChainUpdate[] calldata chains) external virtual onlyOwner { for (uint256 i = 0; i < chains.length; ++i) { ChainUpdate memory update = chains[i]; RateLimiter._validateTokenBucketConfig(update.outboundRateLimiterConfig, !update.allowed); RateLimiter._validateTokenBucketConfig(update.inboundRateLimiterConfig, !update.allowed); if (update.allowed) { // If the chain already exists, revert if (!s_remoteChainSelectors.add(update.remoteChainSelector)) { revert ChainAlreadyExists(update.remoteChainSelector); } s_outboundRateLimits[update.remoteChainSelector] = RateLimiter.TokenBucket({ rate: update.outboundRateLimiterConfig.rate, capacity: update.outboundRateLimiterConfig.capacity, tokens: update.outboundRateLimiterConfig.capacity, lastUpdated: uint32(block.timestamp), isEnabled: update.outboundRateLimiterConfig.isEnabled }); s_inboundRateLimits[update.remoteChainSelector] = RateLimiter.TokenBucket({ rate: update.inboundRateLimiterConfig.rate, capacity: update.inboundRateLimiterConfig.capacity, tokens: update.inboundRateLimiterConfig.capacity, lastUpdated: uint32(block.timestamp), isEnabled: update.inboundRateLimiterConfig.isEnabled }); emit ChainAdded(update.remoteChainSelector, update.outboundRateLimiterConfig, update.inboundRateLimiterConfig); } else { // If the chain doesn't exist, revert if (!s_remoteChainSelectors.remove(update.remoteChainSelector)) { revert NonExistentChain(update.remoteChainSelector); } delete s_inboundRateLimits[update.remoteChainSelector]; delete s_outboundRateLimits[update.remoteChainSelector]; emit ChainRemoved(update.remoteChainSelector); } } } // ================================================================ // │ Rate limiting │ // ================================================================ /// @notice Consumes outbound rate limiting capacity in this pool function _consumeOutboundRateLimit(uint64 remoteChainSelector, uint256 amount) internal { s_outboundRateLimits[remoteChainSelector]._consume(amount, address(i_token)); } /// @notice Consumes inbound rate limiting capacity in this pool function _consumeInboundRateLimit(uint64 remoteChainSelector, uint256 amount) internal { s_inboundRateLimits[remoteChainSelector]._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_outboundRateLimits[remoteChainSelector]._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_inboundRateLimits[remoteChainSelector]._currentTokenBucketState(); } /// @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 virtual onlyOwner { _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_outboundRateLimits[remoteChainSelector]._setTokenBucketConfig(outboundConfig); RateLimiter._validateTokenBucketConfig(inboundConfig, false); s_inboundRateLimits[remoteChainSelector]._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. modifier onlyOnRamp(uint64 remoteChainSelector) { 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. modifier onlyOffRamp(uint64 remoteChainSelector) { if (!isSupportedChain(remoteChainSelector)) revert ChainNotAllowed(remoteChainSelector); if (!s_router.isOffRamp(remoteChainSelector, msg.sender)) revert CallerIsNotARampOnRouter(msg.sender); _; } // ================================================================ // │ Allowlist │ // ================================================================ modifier checkAllowList(address sender) { if (i_allowlistEnabled && !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. /// @dev allowListing will be removed before public launch 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); } } } /// @notice Ensure that there is no active curse. modifier whenHealthy() { if (IARM(i_armProxy).isCursed()) revert BadARMSignal(); _; } }
// 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 pragma solidity ^0.8.0; /// @notice This interface contains the only ARM-related functions that might be used on-chain by other CCIP contracts. interface IARM { /// @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 When the ARM is "cursed", CCIP pauses until the curse is lifted. function isCursed() 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 ^0.8.0; import {IERC20} from "../../../vendor/openzeppelin-solidity/v4.8.3/contracts/token/ERC20/IERC20.sol"; // Shared public interface for multiple pool types. // Each pool type handles a different child token model (lock/unlock, mint/burn.) interface IPool { /// @notice Lock tokens into the pool or burn the tokens. /// @param originalSender Original sender of the tokens. /// @param receiver Receiver of the tokens on destination chain. /// @param amount Amount to lock or burn. /// @param remoteChainSelector Destination chain Id. /// @param extraArgs Additional data passed in by sender for lockOrBurn processing /// in custom pools on source chain. /// @return retData Optional field that contains bytes. Unused for now but already /// implemented to allow future upgrades while preserving the interface. function lockOrBurn( address originalSender, bytes calldata receiver, uint256 amount, uint64 remoteChainSelector, bytes calldata extraArgs ) external returns (bytes memory); /// @notice Releases or mints tokens to the receiver address. /// @param originalSender Original sender of the tokens. /// @param receiver Receiver of the tokens. /// @param amount Amount to release or mint. /// @param remoteChainSelector Source chain Id. /// @param extraData Additional data supplied offchain for releaseOrMint processing in /// custom pools on dest chain. This could be an attestation that was retrieved through a /// third party API. /// @dev offchainData can come from any untrusted source. function releaseOrMint( bytes memory originalSender, address receiver, uint256 amount, uint64 remoteChainSelector, bytes memory extraData ) external; /// @notice Gets the IERC20 token that this pool can lock or burn. /// @return token The IERC20 token representation. function getToken() external view returns (IERC20 token); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import {ConfirmedOwner} from "./ConfirmedOwner.sol"; /// @title The OwnerIsCreator contract /// @notice A contract with helpers for basic contract ownership. contract OwnerIsCreator is ConfirmedOwner { constructor() ConfirmedOwner(msg.sender) {} }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity ^0.8.0; /// @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 v4.4.1 (utils/introspection/IERC165.sol) pragma solidity ^0.8.0; /** * @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 v4.8.0) (utils/structs/EnumerableSet.sol) // This file was procedurally generated from scripts/generate/templates/EnumerableSet.js. pragma solidity ^0.8.0; /** * @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. * * ``` * 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 of the value in the `values` array, plus 1 because index 0 // means a value is not in the set. mapping(bytes32 => uint256) _indexes; } /** * @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._indexes[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 read and store the value's index to prevent multiple reads from the same storage slot uint256 valueIndex = set._indexes[value]; if (valueIndex != 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 toDeleteIndex = valueIndex - 1; uint256 lastIndex = set._values.length - 1; if (lastIndex != toDeleteIndex) { bytes32 lastValue = set._values[lastIndex]; // Move the last value to the index where the value to delete is set._values[toDeleteIndex] = lastValue; // Update the index for the moved value set._indexes[lastValue] = valueIndex; // Replace lastValue's index to valueIndex } // Delete the slot where the moved value was stored set._values.pop(); // Delete the index for the deleted slot delete set._indexes[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._indexes[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 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(EVMExtraArgsV1) } // 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); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import {ConfirmedOwnerWithProposal} from "./ConfirmedOwnerWithProposal.sol"; /// @title The ConfirmedOwner contract /// @notice A contract with helpers for basic contract ownership. contract ConfirmedOwner is ConfirmedOwnerWithProposal { constructor(address newOwner) ConfirmedOwnerWithProposal(newOwner, address(0)) {} }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import {IOwnable} from "../interfaces/IOwnable.sol"; /// @title The ConfirmedOwner contract /// @notice A contract with helpers for basic contract ownership. contract ConfirmedOwnerWithProposal is IOwnable { address private s_owner; address private s_pendingOwner; event OwnershipTransferRequested(address indexed from, address indexed to); event OwnershipTransferred(address indexed from, address indexed to); constructor(address newOwner, address pendingOwner) { // solhint-disable-next-line custom-errors require(newOwner != address(0), "Cannot set owner to zero"); s_owner = newOwner; if (pendingOwner != address(0)) { _transferOwnership(pendingOwner); } } /// @notice Allows an owner to begin transferring ownership to a new address. function transferOwnership(address to) public override onlyOwner { _transferOwnership(to); } /// @notice Allows an ownership transfer to be completed by the recipient. function acceptOwnership() external override { // solhint-disable-next-line custom-errors require(msg.sender == s_pendingOwner, "Must be proposed owner"); address oldOwner = s_owner; s_owner = msg.sender; s_pendingOwner = address(0); emit OwnershipTransferred(oldOwner, msg.sender); } /// @notice Get the current owner function owner() public view override returns (address) { return s_owner; } /// @notice validate, transfer ownership, and emit relevant events function _transferOwnership(address to) private { // solhint-disable-next-line custom-errors require(to != msg.sender, "Cannot transfer to self"); s_pendingOwner = to; emit OwnershipTransferRequested(s_owner, to); } /// @notice validate access function _validateOwnership() internal view { // solhint-disable-next-line custom-errors require(msg.sender == s_owner, "Only callable by owner"); } /// @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; }
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RateLimiter.Config","name":"inboundConfig","type":"tuple"}],"name":"setChainRateLimiterConfig","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"},{"inputs":[],"name":"typeAndVersion","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"}]
Contract Creation Code
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
000000000000000000000000cab0ef91bee323d1a617c0a027ee753afd6997e400000000000000000000000000000000000000000000000000000000000000800000000000000000000000007c1e545a40750ee8761282382d51e017bac68cbb0000000000000000000000009c32fcb86bf0f4a1a8921a9fe46de3198bb884b20000000000000000000000000000000000000000000000000000000000000000
-----Decoded View---------------
Arg [0] : token (address): 0xcab0EF91Bee323d1A617c0a027eE753aFd6997E4
-----Encoded View---------------
5 Constructor Arguments found :
Arg [0] : 000000000000000000000000cab0ef91bee323d1a617c0a027ee753afd6997e4
Arg [1] : 0000000000000000000000000000000000000000000000000000000000000080
Arg [2] : 0000000000000000000000007c1e545a40750ee8761282382d51e017bac68cbb
Arg [3] : 0000000000000000000000009c32fcb86bf0f4a1a8921a9fe46de3198bb884b2
Arg [4] : 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.