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Latest 25 from a total of 36 transactions
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| Approve | 144533493 | 63 days ago | IN | 0 ETH | 0.000000004884 | ||||
| Approve | 143455502 | 88 days ago | IN | 0 ETH | 0.000000054915 | ||||
| Approve | 143290957 | 92 days ago | IN | 0 ETH | 0.000000019328 | ||||
| Approve | 143114810 | 96 days ago | IN | 0 ETH | 0.000000028308 | ||||
| Approve | 143028370 | 98 days ago | IN | 0 ETH | 0.000000005498 | ||||
| Approve | 143028306 | 98 days ago | IN | 0 ETH | 0.000000006235 | ||||
| Approve | 141962639 | 123 days ago | IN | 0 ETH | 0.000000002366 | ||||
| Approve | 141962627 | 123 days ago | IN | 0 ETH | 0.000000002339 | ||||
| Approve | 140126792 | 165 days ago | IN | 0 ETH | 0.000000006799 | ||||
| Approve | 140126770 | 165 days ago | IN | 0 ETH | 0.000000007007 | ||||
| Approve | 139654349 | 176 days ago | IN | 0 ETH | 0.000000008745 | ||||
| Approve | 139185086 | 187 days ago | IN | 0 ETH | 0.000000050422 | ||||
| Approve | 138015434 | 214 days ago | IN | 0 ETH | 0.000000465811 | ||||
| Approve | 138012804 | 214 days ago | IN | 0 ETH | 0.000000465998 | ||||
| Approve | 137926372 | 216 days ago | IN | 0 ETH | 0.000000011416 | ||||
| Approve | 136758652 | 243 days ago | IN | 0 ETH | 0.00000001598 | ||||
| Approve | 134946831 | 285 days ago | IN | 0 ETH | 0.000000269309 | ||||
| Approve | 134939533 | 285 days ago | IN | 0 ETH | 0.00000024348 | ||||
| Approve | 134875769 | 287 days ago | IN | 0 ETH | 0.000000608531 | ||||
| Approve | 132881814 | 333 days ago | IN | 0 ETH | 0.000001078799 | ||||
| Approve | 132881677 | 333 days ago | IN | 0 ETH | 0.000000938763 | ||||
| Approve | 132536881 | 341 days ago | IN | 0 ETH | 0.00000057653 | ||||
| Approve | 132396869 | 344 days ago | IN | 0 ETH | 0.000000033375 | ||||
| Approve | 132396776 | 344 days ago | IN | 0 ETH | 0.000000040477 | ||||
| Approve | 132396764 | 344 days ago | IN | 0 ETH | 0.000000053662 |
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Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.26;
import { ERC20Extended } from "../lib/common/src/ERC20Extended.sol";
import { UIntMath } from "../lib/common/src/libs/UIntMath.sol";
import { IERC20 } from "../lib/common/src/interfaces/IERC20.sol";
import { RegistrarReader } from "./libs/RegistrarReader.sol";
import { IContinuousIndexing } from "./interfaces/IContinuousIndexing.sol";
import { IMToken } from "./interfaces/IMToken.sol";
import { ContinuousIndexing } from "./abstract/ContinuousIndexing.sol";
import { ContinuousIndexingMath } from "./libs/ContinuousIndexingMath.sol";
/**
* @title MToken
* @author M^0 Labs
* @notice ERC20 M Token living on other chains.
*/
contract MToken is IMToken, ContinuousIndexing, ERC20Extended {
/* ============ Structs ============ */
/**
* @notice MToken balance struct.
* @param isEarning True if the account is earning, false otherwise.
* @param rawBalance Balance (for a non earning account) or balance principal (for an earning account).
*/
struct MBalance {
bool isEarning;
uint240 rawBalance;
}
/* ============ Variables ============ */
/// @inheritdoc IMToken
address public immutable portal;
/// @inheritdoc IMToken
address public immutable registrar;
/// @inheritdoc IMToken
uint240 public totalNonEarningSupply;
/// @inheritdoc IMToken
uint112 public principalOfTotalEarningSupply;
/// @notice The balance of M for non-earner or principal of earning M balance for earners.
mapping(address account => MBalance balance) internal _balances;
/* ============ Modifiers ============ */
/// @dev Modifier to check if caller is the Portal.
modifier onlyPortal() {
_revertIfNotPortal();
_;
}
/* ============ Constructor ============ */
/**
* @notice Constructs the M Token contract.
* @param registrar_ The address of the Registrar contract.
*/
constructor(address registrar_) ContinuousIndexing() ERC20Extended("M by M^0", "M", 6) {
if ((registrar = registrar_) == address(0)) revert ZeroRegistrar();
if ((portal = RegistrarReader.getPortal(registrar_)) == address(0)) revert ZeroPortal();
}
/* ============ Interactive Functions ============ */
/// @inheritdoc IMToken
function mint(address account_, uint256 amount_, uint128 index_) external onlyPortal {
_updateIndex(index_);
_mint(account_, amount_);
}
/// @inheritdoc IMToken
function mint(address account_, uint256 amount_) external onlyPortal {
_mint(account_, amount_);
}
/// @inheritdoc IMToken
function burn(uint256 amount_) external onlyPortal {
_burn(msg.sender, amount_);
}
/// @inheritdoc IMToken
function updateIndex(uint128 index_) external onlyPortal {
_updateIndex(index_);
}
/// @inheritdoc IMToken
function startEarning() external {
if (!_isApprovedEarner(msg.sender)) revert NotApprovedEarner();
if (currentIndex() == ContinuousIndexingMath.EXP_SCALED_ONE) revert IndexNotInitialized();
_startEarning(msg.sender);
}
/// @inheritdoc IMToken
function stopEarning() external {
_stopEarning(msg.sender);
}
/// @inheritdoc IMToken
function stopEarning(address account_) external {
if (_isApprovedEarner(account_)) revert IsApprovedEarner();
_stopEarning(account_);
}
/* ============ View/Pure Functions ============ */
/// @inheritdoc IMToken
function totalEarningSupply() public view returns (uint240 totalEarningSupply_) {
return _getPresentAmount(principalOfTotalEarningSupply);
}
/// @inheritdoc IERC20
function totalSupply() external view returns (uint256 totalSupply_) {
unchecked {
return totalNonEarningSupply + totalEarningSupply();
}
}
/// @inheritdoc IMToken
function principalBalanceOf(address account_) external view returns (uint240 balance_) {
MBalance storage mBalance_ = _balances[account_];
// Treat the raw balance as principal for earner.
return mBalance_.isEarning ? uint112(mBalance_.rawBalance) : 0;
}
/// @inheritdoc IERC20
function balanceOf(address account_) external view returns (uint256 balance_) {
MBalance storage mBalance_ = _balances[account_];
return
mBalance_.isEarning
? _getPresentAmount(uint112(mBalance_.rawBalance)) // Treat the raw balance as principal for earner.
: mBalance_.rawBalance;
}
/// @inheritdoc IMToken
function isEarning(address account_) external view returns (bool isEarning_) {
return _balances[account_].isEarning;
}
/// @inheritdoc IContinuousIndexing
function currentIndex() public view override(ContinuousIndexing, IContinuousIndexing) returns (uint128 index_) {
return latestIndex;
}
/* ============ Internal Interactive Functions ============ */
/**
* @dev Adds principal to `_balances` of an earning account.
* @param account_ The account to add principal to.
* @param principalAmount_ The principal amount to add.
*/
function _addEarningAmount(address account_, uint112 principalAmount_) internal {
// NOTE: Safe to use unchecked here since overflow of the total supply is checked in `_mint`.
unchecked {
_balances[account_].rawBalance += principalAmount_;
principalOfTotalEarningSupply += principalAmount_;
}
}
/**
* @dev Adds amount to `_balances` of a non-earning account.
* @param account_ The account to add amount to.
* @param amount_ The amount to add.
*/
function _addNonEarningAmount(address account_, uint240 amount_) internal {
// NOTE: Safe to use unchecked here since overflow of the total supply is checked in `_mint`.
unchecked {
_balances[account_].rawBalance += amount_;
totalNonEarningSupply += amount_;
}
}
/**
* @dev Burns amount of earning or non-earning M from account.
* @param account_ The account to burn from.
* @param amount_ The present amount to burn.
*/
function _burn(address account_, uint256 amount_) internal {
_revertIfInsufficientAmount(amount_);
emit Transfer(account_, address(0), amount_);
if (_balances[account_].isEarning) {
// NOTE: When burning a present amount, round the principal up in favor of the protocol.
_subtractEarningAmount(account_, _getPrincipalAmountRoundedUp(UIntMath.safe240(amount_)));
} else {
_subtractNonEarningAmount(account_, UIntMath.safe240(amount_));
}
}
/**
* @dev Mints amount of earning or non-earning M to account.
* @param recipient_ The account to mint to.
* @param amount_ The present amount to mint.
*/
function _mint(address recipient_, uint256 amount_) internal {
_revertIfInsufficientAmount(amount_);
_revertIfInvalidRecipient(recipient_);
emit Transfer(address(0), recipient_, amount_);
uint240 safeAmount_ = UIntMath.safe240(amount_);
unchecked {
// As an edge case precaution, prevent a mint that, if all tokens (earning and non-earning) were converted
// to a principal earning amount, would overflow the `uint112 principalOfTotalEarningSupply`.
if (
uint256(totalNonEarningSupply) + safeAmount_ > type(uint240).max ||
// NOTE: Round the principal up for worst case.
uint256(principalOfTotalEarningSupply) +
_getPrincipalAmountRoundedUp(totalNonEarningSupply + safeAmount_) >=
type(uint112).max
) {
revert OverflowsPrincipalOfTotalSupply();
}
}
if (_balances[recipient_].isEarning) {
// NOTE: When minting a present amount, round the principal down in favor of the protocol.
_addEarningAmount(recipient_, _getPrincipalAmountRoundedDown(safeAmount_));
} else {
_addNonEarningAmount(recipient_, safeAmount_);
}
}
/**
* @dev Starts earning for account.
* @param account_ The account to start earning for.
*/
function _startEarning(address account_) internal {
MBalance storage mBalance_ = _balances[account_];
if (mBalance_.isEarning) return;
emit StartedEarning(account_);
mBalance_.isEarning = true;
// Treat the raw balance as present amount for non earner.
uint240 amount_ = mBalance_.rawBalance;
if (amount_ == 0) return;
// NOTE: When converting a non-earning balance into an earning balance,
// round the principal down in favor of the protocol.
uint112 principalAmount_ = _getPrincipalAmountRoundedDown(amount_);
_balances[account_].rawBalance = principalAmount_;
unchecked {
principalOfTotalEarningSupply += principalAmount_;
totalNonEarningSupply -= amount_;
}
}
/**
* @dev Stops earning for account.
* @param account_ The account to stop earning for.
*/
function _stopEarning(address account_) internal {
MBalance storage mBalance_ = _balances[account_];
if (!mBalance_.isEarning) return;
emit StoppedEarning(account_);
mBalance_.isEarning = false;
// Treat the raw balance as principal for earner.
uint112 principalAmount_ = uint112(_balances[account_].rawBalance);
if (principalAmount_ == 0) return;
uint240 amount_ = _getPresentAmount(principalAmount_);
_balances[account_].rawBalance = amount_;
unchecked {
totalNonEarningSupply += amount_;
principalOfTotalEarningSupply -= principalAmount_;
}
}
/**
* @dev Subtracts principal from `_balances` of an earning account.
* @param account_ The account to subtract principal from.
* @param principalAmount_ The principal amount to subtract.
*/
function _subtractEarningAmount(address account_, uint112 principalAmount_) internal {
uint256 rawBalance_ = _balances[account_].rawBalance;
if (rawBalance_ < principalAmount_) revert InsufficientBalance(account_, rawBalance_, principalAmount_);
unchecked {
// Overflow not possible given the above check.
_balances[account_].rawBalance -= principalAmount_;
principalOfTotalEarningSupply -= principalAmount_;
}
}
/**
* @dev Subtracts amount from `_balances` of a non-earning account.
* @param account_ The account to subtract amount from.
* @param amount_ The amount to subtract.
*/
function _subtractNonEarningAmount(address account_, uint240 amount_) internal {
uint256 rawBalance_ = _balances[account_].rawBalance;
if (rawBalance_ < amount_) revert InsufficientBalance(account_, rawBalance_, amount_);
unchecked {
// Overflow not possible given the above check.
_balances[account_].rawBalance -= amount_;
totalNonEarningSupply -= amount_;
}
}
/**
* @dev Transfer M between both earning and non-earning accounts.
* @param sender_ The account to transfer from. It can be either earning or non-earning account.
* @param recipient_ The account to transfer to. It can be either earning or non-earning account.
* @param amount_ The present amount to transfer.
*/
function _transfer(address sender_, address recipient_, uint256 amount_) internal override {
_revertIfInvalidRecipient(recipient_);
emit Transfer(sender_, recipient_, amount_);
uint240 safeAmount_ = UIntMath.safe240(amount_);
bool senderIsEarning_ = _balances[sender_].isEarning; // Only using the sender's earning status more than once.
// If this is an in-kind transfer, then...
if (senderIsEarning_ == _balances[recipient_].isEarning) {
// NOTE: When subtracting a present amount from an earner, round the principal up in favor of the protocol.
return
_transferAmountInKind( // perform an in-kind transfer with...
sender_,
recipient_,
senderIsEarning_ ? _getPrincipalAmountRoundedUp(safeAmount_) : safeAmount_ // the appropriate amount
);
}
// If this is not an in-kind transfer, then...
if (senderIsEarning_) {
// either the sender is earning and the recipient is not, or...
// NOTE: When subtracting a present amount from an earner, round the principal up in favor of the protocol.
_subtractEarningAmount(sender_, _getPrincipalAmountRoundedUp(safeAmount_));
_addNonEarningAmount(recipient_, safeAmount_);
} else {
// the sender is not earning and the recipient is.
// NOTE: When adding a present amount to an earner, round the principal down in favor of the protocol.
_subtractNonEarningAmount(sender_, safeAmount_);
_addEarningAmount(recipient_, _getPrincipalAmountRoundedDown(safeAmount_));
}
}
/**
* @dev Transfer M between same earning status accounts.
* @param sender_ The account to transfer from.
* @param recipient_ The account to transfer to.
* @param amount_ The amount (present or principal) to transfer.
*/
function _transferAmountInKind(address sender_, address recipient_, uint240 amount_) internal {
uint256 rawBalance_ = _balances[sender_].rawBalance;
if (rawBalance_ < amount_) revert InsufficientBalance(sender_, rawBalance_, amount_);
// NOTE: When transferring an amount in kind, the `rawBalance` can't overflow
// since the total supply would have overflowed first when minting.
unchecked {
_balances[sender_].rawBalance -= amount_;
_balances[recipient_].rawBalance += amount_;
}
}
/* ============ Internal View/Pure Functions ============ */
/**
* @dev Returns the present amount (rounded down) given the principal amount, using the current index.
* All present amounts are rounded down in favor of the protocol.
* @param principalAmount_ The principal amount.
* @return The present amount.
*/
function _getPresentAmount(uint112 principalAmount_) internal view returns (uint240) {
return _getPresentAmount(principalAmount_, currentIndex());
}
/**
* @dev Returns the present amount (rounded down) given the principal amount and an index.
* All present amounts are rounded down in favor of the protocol, since they are assets.
* @param principalAmount_ The principal amount.
* @param index_ An index
* @return The present amount.
*/
function _getPresentAmount(uint112 principalAmount_, uint128 index_) internal pure returns (uint240) {
return _getPresentAmountRoundedDown(principalAmount_, index_);
}
/**
* @dev Checks if earner was approved by the Registrar.
* @param account_ The account to check.
* @return True if approved, false otherwise.
*/
function _isApprovedEarner(address account_) internal view returns (bool) {
return RegistrarReader.isEarnersListIgnored(registrar) || RegistrarReader.isApprovedEarner(registrar, account_);
}
/**
* @dev Reverts if the amount of a `mint` or `burn` is equal to 0.
* @param amount_ Amount to check.
*/
function _revertIfInsufficientAmount(uint256 amount_) internal pure {
if (amount_ == 0) revert InsufficientAmount(amount_);
}
/**
* @dev Reverts if the recipient of a `mint` or `transfer` is address(0).
* @param recipient_ Address of the recipient to check.
*/
function _revertIfInvalidRecipient(address recipient_) internal pure {
if (recipient_ == address(0)) revert InvalidRecipient(recipient_);
}
/// @dev Reverts if the caller is not the portal.
function _revertIfNotPortal() internal view {
if (msg.sender != portal) revert NotPortal();
}
}// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.26;
import { IERC20 } from "./interfaces/IERC20.sol";
import { IERC20Extended } from "./interfaces/IERC20Extended.sol";
import { Bytes32String } from "./libs/Bytes32String.sol";
import { ERC3009 } from "./ERC3009.sol";
/**
* @title An ERC20 token extended with EIP-2612 permits for signed approvals (via EIP-712 and with EIP-1271
* and EIP-5267 compatibility), and extended with EIP-3009 transfer with authorization (via EIP-712).
* @author M^0 Labs
*/
abstract contract ERC20Extended is IERC20Extended, ERC3009 {
/* ============ Variables ============ */
/**
* @inheritdoc IERC20Extended
* @dev Keeping this constant, despite `permit` parameter name differences, to ensure max EIP-2612 compatibility.
* keccak256("Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)")
*/
bytes32 public constant PERMIT_TYPEHASH = 0x6e71edae12b1b97f4d1f60370fef10105fa2faae0126114a169c64845d6126c9;
/// @inheritdoc IERC20
uint8 public immutable decimals;
/// @dev The symbol of the token (stored as a bytes32 instead of a string in order to be immutable).
bytes32 internal immutable _symbol;
/// @inheritdoc IERC20
mapping(address account => mapping(address spender => uint256 allowance)) public allowance;
/* ============ Constructor ============ */
/**
* @notice Constructs the ERC20Extended contract.
* @param name_ The name of the token.
* @param symbol_ The symbol of the token.
* @param decimals_ The number of decimals the token uses.
*/
constructor(string memory name_, string memory symbol_, uint8 decimals_) ERC3009(name_) {
_symbol = Bytes32String.toBytes32(symbol_);
decimals = decimals_;
}
/* ============ Interactive Functions ============ */
/// @inheritdoc IERC20
function approve(address spender_, uint256 amount_) external returns (bool success_) {
_approve(msg.sender, spender_, amount_);
return true;
}
/// @inheritdoc IERC20Extended
function permit(
address owner_,
address spender_,
uint256 value_,
uint256 deadline_,
uint8 v_,
bytes32 r_,
bytes32 s_
) external {
_revertIfInvalidSignature(owner_, _permitAndGetDigest(owner_, spender_, value_, deadline_), v_, r_, s_);
}
/// @inheritdoc IERC20Extended
function permit(
address owner_,
address spender_,
uint256 value_,
uint256 deadline_,
bytes memory signature_
) external {
_revertIfInvalidSignature(owner_, _permitAndGetDigest(owner_, spender_, value_, deadline_), signature_);
}
/// @inheritdoc IERC20
function transfer(address recipient_, uint256 amount_) external returns (bool success_) {
_transfer(msg.sender, recipient_, amount_);
return true;
}
/// @inheritdoc IERC20
function transferFrom(address sender_, address recipient_, uint256 amount_) external returns (bool success_) {
uint256 spenderAllowance_ = allowance[sender_][msg.sender]; // Cache `spenderAllowance_` to stack.
if (spenderAllowance_ != type(uint256).max) {
if (spenderAllowance_ < amount_) revert InsufficientAllowance(msg.sender, spenderAllowance_, amount_);
unchecked {
_setAllowance(sender_, msg.sender, spenderAllowance_ - amount_);
}
}
_transfer(sender_, recipient_, amount_);
return true;
}
/* ============ View/Pure Functions ============ */
/// @inheritdoc IERC20
function name() external view returns (string memory) {
return Bytes32String.toString(_name);
}
/// @inheritdoc IERC20
function symbol() external view returns (string memory) {
return Bytes32String.toString(_symbol);
}
/* ============ Internal Interactive Functions ============ */
/**
* @dev Approve `spender_` to spend `amount_` of tokens from `account_`.
* @param account_ The address approving the allowance.
* @param spender_ The address approved to spend the tokens.
* @param amount_ The amount of tokens being approved for spending.
*/
function _approve(address account_, address spender_, uint256 amount_) internal virtual {
_setAllowance(account_, spender_, amount_);
emit Approval(account_, spender_, amount_);
}
/**
* @dev Set the `amount_` of tokens `spender_` is allowed to spend from `account_`.
* @param account_ The address for which the allowance is set.
* @param spender_ The address allowed to spend the tokens.
* @param amount_ The amount of tokens being allowed for spending.
*/
function _setAllowance(address account_, address spender_, uint256 amount_) internal virtual {
allowance[account_][spender_] = amount_;
}
/**
* @dev Performs the approval based on the permit info, validates the deadline, and returns the digest.
* @param owner_ The address of the account approving the allowance.
* @param spender_ The address of the account being allowed to spend the tokens.
* @param amount_ The amount of tokens being approved for spending.
* @param deadline_ The deadline by which the signature must be used.
* @return digest_ The EIP-712 digest of the permit.
*/
function _permitAndGetDigest(
address owner_,
address spender_,
uint256 amount_,
uint256 deadline_
) internal virtual returns (bytes32 digest_) {
_revertIfExpired(deadline_);
_approve(owner_, spender_, amount_);
unchecked {
// Nonce realistically cannot overflow.
return
_getDigest(
keccak256(abi.encode(PERMIT_TYPEHASH, owner_, spender_, amount_, nonces[owner_]++, deadline_))
);
}
}
}// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.26;
/**
* @title Library to perform safe math operations on uint types
* @author M^0 Labs
*/
library UIntMath {
/* ============ Custom Errors ============ */
/// @notice Emitted when a passed value is greater than the maximum value of uint16.
error InvalidUInt16();
/// @notice Emitted when a passed value is greater than the maximum value of uint40.
error InvalidUInt40();
/// @notice Emitted when a passed value is greater than the maximum value of uint48.
error InvalidUInt48();
/// @notice Emitted when a passed value is greater than the maximum value of uint112.
error InvalidUInt112();
/// @notice Emitted when a passed value is greater than the maximum value of uint128.
error InvalidUInt128();
/// @notice Emitted when a passed value is greater than the maximum value of uint240.
error InvalidUInt240();
/* ============ Internal View/Pure Functions ============ */
/**
* @notice Casts a given uint256 value to a uint16,
* ensuring that it is less than or equal to the maximum uint16 value.
* @param n The value to check.
* @return The value casted to uint16.
*/
function safe16(uint256 n) internal pure returns (uint16) {
if (n > type(uint16).max) revert InvalidUInt16();
return uint16(n);
}
/**
* @notice Casts a given uint256 value to a uint40,
* ensuring that it is less than or equal to the maximum uint40 value.
* @param n The value to check.
* @return The value casted to uint40.
*/
function safe40(uint256 n) internal pure returns (uint40) {
if (n > type(uint40).max) revert InvalidUInt40();
return uint40(n);
}
/**
* @notice Casts a given uint256 value to a uint48,
* ensuring that it is less than or equal to the maximum uint48 value.
* @param n The value to check.
* @return The value casted to uint48.
*/
function safe48(uint256 n) internal pure returns (uint48) {
if (n > type(uint48).max) revert InvalidUInt48();
return uint48(n);
}
/**
* @notice Casts a given uint256 value to a uint112,
* ensuring that it is less than or equal to the maximum uint112 value.
* @param n The value to check.
* @return The value casted to uint112.
*/
function safe112(uint256 n) internal pure returns (uint112) {
if (n > type(uint112).max) revert InvalidUInt112();
return uint112(n);
}
/**
* @notice Casts a given uint256 value to a uint128,
* ensuring that it is less than or equal to the maximum uint128 value.
* @param n The value to check.
* @return The value casted to uint128.
*/
function safe128(uint256 n) internal pure returns (uint128) {
if (n > type(uint128).max) revert InvalidUInt128();
return uint128(n);
}
/**
* @notice Casts a given uint256 value to a uint240,
* ensuring that it is less than or equal to the maximum uint240 value.
* @param n The value to check.
* @return The value casted to uint240.
*/
function safe240(uint256 n) internal pure returns (uint240) {
if (n > type(uint240).max) revert InvalidUInt240();
return uint240(n);
}
/**
* @notice Limits a given uint256 value to the maximum uint32 value.
* @param n The value to check.
* @return The value limited to within uint32 bounds.
*/
function bound32(uint256 n) internal pure returns (uint32) {
return uint32(min256(n, uint256(type(uint32).max)));
}
/**
* @notice Limits a given uint256 value to the maximum uint112 value.
* @param n The value to check.
* @return The value limited to within uint112 bounds.
*/
function bound112(uint256 n) internal pure returns (uint112) {
return uint112(min256(n, uint256(type(uint112).max)));
}
/**
* @notice Limits a given uint256 value to the maximum uint128 value.
* @param n The value to check.
* @return The value limited to within uint128 bounds.
*/
function bound128(uint256 n) internal pure returns (uint128) {
return uint128(min256(n, uint256(type(uint128).max)));
}
/**
* @notice Limits a given uint256 value to the maximum uint240 value.
* @param n The value to check.
* @return The value limited to within uint240 bounds.
*/
function bound240(uint256 n) internal pure returns (uint240) {
return uint240(min256(n, uint256(type(uint240).max)));
}
/**
* @notice Compares two uint32 values and returns the larger one.
* @param a_ Value to check.
* @param b_ Value to check.
* @return The larger value.
*/
function max32(uint32 a_, uint32 b_) internal pure returns (uint32) {
return a_ > b_ ? a_ : b_;
}
/**
* @notice Compares two uint40 values and returns the larger one.
* @param a_ Value to check.
* @param b_ Value to check.
* @return The larger value.
*/
function max40(uint40 a_, uint40 b_) internal pure returns (uint40) {
return a_ > b_ ? a_ : b_;
}
/**
* @notice Compares two uint32 values and returns the lesser one.
* @param a_ Value to check.
* @param b_ Value to check.
* @return The lesser value.
*/
function min32(uint32 a_, uint32 b_) internal pure returns (uint32) {
return a_ < b_ ? a_ : b_;
}
/**
* @notice Compares two uint40 values and returns the lesser one.
* @param a_ Value to check.
* @param b_ Value to check.
* @return The lesser value.
*/
function min40(uint40 a_, uint40 b_) internal pure returns (uint40) {
return a_ < b_ ? a_ : b_;
}
/**
* @notice Compares two uint240 values and returns the lesser one.
* @param a_ Value to check.
* @param b_ Value to check.
* @return The lesser value.
*/
function min240(uint240 a_, uint240 b_) internal pure returns (uint240) {
return a_ < b_ ? a_ : b_;
}
/**
* @notice Compares two uint112 values and returns the lesser one.
* @param a_ Value to check.
* @param b_ Value to check.
* @return The lesser value.
*/
function min112(uint112 a_, uint112 b_) internal pure returns (uint112) {
return a_ < b_ ? a_ : b_;
}
/**
* @notice Compares two uint256 values and returns the lesser one.
* @param a_ Value to check.
* @param b_ Value to check.
* @return The lesser value.
*/
function min256(uint256 a_, uint256 b_) internal pure returns (uint256) {
return a_ < b_ ? a_ : b_;
}
}// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.26;
/**
* @title ERC20 Token Standard.
* @author M^0 Labs
* @dev The interface as defined by EIP-20: https://eips.ethereum.org/EIPS/eip-20
*/
interface IERC20 {
/* ============ Events ============ */
/**
* @notice Emitted when `spender` has been approved for `amount` of the token balance of `account`.
* @param account The address of the account.
* @param spender The address of the spender being approved for the allowance.
* @param amount The amount of the allowance being approved.
*/
event Approval(address indexed account, address indexed spender, uint256 amount);
/**
* @notice Emitted when `amount` tokens is transferred from `sender` to `recipient`.
* @param sender The address of the sender who's token balance is decremented.
* @param recipient The address of the recipient who's token balance is incremented.
* @param amount The amount of tokens being transferred.
*/
event Transfer(address indexed sender, address indexed recipient, uint256 amount);
/* ============ Interactive Functions ============ */
/**
* @notice Allows a calling account to approve `spender` to spend up to `amount` of its token balance.
* @dev MUST emit an `Approval` event.
* @param spender The address of the account being allowed to spend up to the allowed amount.
* @param amount The amount of the allowance being approved.
* @return Whether or not the approval was successful.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @notice Allows a calling account to transfer `amount` tokens to `recipient`.
* @param recipient The address of the recipient who's token balance will be incremented.
* @param amount The amount of tokens being transferred.
* @return Whether or not the transfer was successful.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @notice Allows a calling account to transfer `amount` tokens from `sender`, with allowance, to a `recipient`.
* @param sender The address of the sender who's token balance will be decremented.
* @param recipient The address of the recipient who's token balance will be incremented.
* @param amount The amount of tokens being transferred.
* @return Whether or not the transfer was successful.
*/
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
/* ============ View/Pure Functions ============ */
/**
* @notice Returns the allowance `spender` is allowed to spend on behalf of `account`.
* @param account The address of the account who's token balance `spender` is allowed to spend.
* @param spender The address of an account allowed to spend on behalf of `account`.
* @return The amount `spender` can spend on behalf of `account`.
*/
function allowance(address account, address spender) external view returns (uint256);
/**
* @notice Returns the token balance of `account`.
* @param account The address of some account.
* @return The token balance of `account`.
*/
function balanceOf(address account) external view returns (uint256);
/// @notice Returns the number of decimals UIs should assume all amounts have.
function decimals() external view returns (uint8);
/// @notice Returns the name of the contract/token.
function name() external view returns (string memory);
/// @notice Returns the symbol of the token.
function symbol() external view returns (string memory);
/// @notice Returns the current total supply of the token.
function totalSupply() external view returns (uint256);
}// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.26;
import { IRegistrar } from "../interfaces/IRegistrar.sol";
/**
* @title Library to read Registrar contract parameters.
* @author M^0 Labs
*/
library RegistrarReader {
/* ============ Variables ============ */
/// @notice The parameter name in the Registrar that defines the earners list.
bytes32 internal constant EARNERS_LIST = "earners";
/// @notice The parameter name in the Registrar that defines whether to ignore the earners list.
bytes32 internal constant EARNERS_LIST_IGNORED = "earners_list_ignored";
/* ============ Internal View/Pure Functions ============ */
/// @notice Checks if the given earner is approved.
function isApprovedEarner(address registrar_, address earner_) internal view returns (bool) {
return _contains(registrar_, EARNERS_LIST, earner_);
}
/// @notice Checks if the `earners_list_ignored` exists.
function isEarnersListIgnored(address registrar_) internal view returns (bool) {
return _get(registrar_, EARNERS_LIST_IGNORED) != bytes32(0);
}
/// @notice Gets the Portal contract address.
function getPortal(address registrar_) internal view returns (address) {
return IRegistrar(registrar_).portal();
}
/// @notice Checks if the given list contains the given account.
function _contains(address registrar_, bytes32 listName_, address account_) private view returns (bool) {
return IRegistrar(registrar_).listContains(listName_, account_);
}
/// @notice Gets the value of the given key.
function _get(address registrar_, bytes32 key_) private view returns (bytes32) {
return IRegistrar(registrar_).get(key_);
}
}// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.26;
/**
* @title Continuous Indexing Interface.
* @author M^0 Labs
*/
interface IContinuousIndexing {
/* ============ Events ============ */
/**
* @notice Emitted when the index is updated.
* @param index The new index.
*/
event IndexUpdated(uint128 indexed index);
/* ============ Custom Error ============ */
/**
* @notice Emitted during index update when the new index is less than the current one.
* @param index The new index.
* @param currentIndex The current index.
*/
error DecreasingIndex(uint128 index, uint128 currentIndex);
/* ============ View/Pure Functions ============ */
/// @notice The current index that was last written to storage when `updatedIndex` was called.
function currentIndex() external view returns (uint128);
/// @notice The latest updated index.
function latestIndex() external view returns (uint128);
/// @notice The latest timestamp when the index was updated.
function latestUpdateTimestamp() external view returns (uint40);
}// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.26;
import { IERC20Extended } from "../../lib/common/src/interfaces/IERC20Extended.sol";
import { IContinuousIndexing } from "./IContinuousIndexing.sol";
/**
* @title M Token Interface.
* @author M^0 Labs
*/
interface IMToken is IContinuousIndexing, IERC20Extended {
/* ============ Events ============ */
/**
* @notice Emitted when account starts being an M earner.
* @param account The account that started earning.
*/
event StartedEarning(address indexed account);
/**
* @notice Emitted when account stops being an M earner.
* @param account The account that stopped earning.
*/
event StoppedEarning(address indexed account);
/* ============ Custom Errors ============ */
/// @notice Emitted when the index from the Hub chain has not yet been propagated to the Spoke chain.
error IndexNotInitialized();
/**
* @notice Emitted when there is insufficient balance to decrement from `account`.
* @param account The account with insufficient balance.
* @param rawBalance The raw balance of the account.
* @param amount The amount to decrement the `rawBalance` by.
*/
error InsufficientBalance(address account, uint256 rawBalance, uint256 amount);
/// @notice Emitted when calling `stopEarning` for an account approved as earner by the Registrar.
error IsApprovedEarner();
/// @notice Emitted when calling `startEarning` for an account not approved as earner by the Registrar.
error NotApprovedEarner();
/// @notice Emitted when the caller is not the Portal.
error NotPortal();
/// @notice Emitted when principal of total supply (earning and non-earning) will overflow a `type(uint112).max`.
error OverflowsPrincipalOfTotalSupply();
/// @notice Emitted in constructor if the Portal address in the Registrar is 0x0.
error ZeroPortal();
/// @notice Emitted in constructor if the Registrar address is 0x0.
error ZeroRegistrar();
/* ============ Interactive Functions ============ */
/**
* @notice Updates the index and mints tokens.
* @dev MUST only be callable by the Spoke Portal.
* @param account The address of account to mint to.
* @param amount The amount of M Token to mint.
* @param index The index to update to.
*/
function mint(address account, uint256 amount, uint128 index) external;
/**
* @notice Mints tokens.
* @dev MUST only be callable by the Spoke Portal.
* @param account The address of account to mint to.
* @param amount The amount of M Token to mint.
*/
function mint(address account, uint256 amount) external;
/**
* @notice Burns `amount` of M tokens from `msg.sender`.
* @dev MUST only be callable by the Spoke Portal.
* @param amount The amount of M Token to burn.
*/
function burn(uint256 amount) external;
/**
* @notice Updates the latest index and latest accrual time in storage.
* @dev MUST only be callable by the Spoke Portal.
* @param index The new index to compute present amounts from principal amounts.
*/
function updateIndex(uint128 index) external;
/// @notice Starts earning for caller if allowed by TTG.
function startEarning() external;
/// @notice Stops earning for caller.
function stopEarning() external;
/**
* @notice Stops earning for `account`.
* @dev MUST revert if `account` is an approved earner in the Registrar.
* @param account The account to stop earning for.
*/
function stopEarning(address account) external;
/* ============ View/Pure Functions ============ */
/// @notice The address of the M Portal contract.
function portal() external view returns (address);
/// @notice The address of the Registrar contract.
function registrar() external view returns (address);
/**
* @notice The principal of an earner M token balance.
* @param account The account to get the principal balance of.
* @return The principal balance of the account.
*/
function principalBalanceOf(address account) external view returns (uint240);
/// @notice The principal of the total earning supply of M Token.
function principalOfTotalEarningSupply() external view returns (uint112);
/// @notice The total earning supply of M Token.
function totalEarningSupply() external view returns (uint240);
/// @notice The total non-earning supply of M Token.
function totalNonEarningSupply() external view returns (uint240);
/**
* @notice Checks if account is an earner.
* @param account The account to check.
* @return True if account is an earner, false otherwise.
*/
function isEarning(address account) external view returns (bool);
}// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.26;
import { IContinuousIndexing } from "../interfaces/IContinuousIndexing.sol";
import { ContinuousIndexingMath } from "../libs/ContinuousIndexingMath.sol";
/**
* @title Abstract Continuous Indexing Contract to handle index updates in inheriting contracts.
* @author M^0 Labs
*/
abstract contract ContinuousIndexing is IContinuousIndexing {
/* ============ Variables ============ */
/// @inheritdoc IContinuousIndexing
uint128 public latestIndex;
/// @inheritdoc IContinuousIndexing
uint40 public latestUpdateTimestamp;
/* ============ Constructor ============ */
/// @notice Constructs the ContinuousIndexing contract.
constructor() {
latestIndex = ContinuousIndexingMath.EXP_SCALED_ONE;
latestUpdateTimestamp = uint40(block.timestamp);
}
/* ============ View/Pure Functions ============ */
/// @inheritdoc IContinuousIndexing
function currentIndex() public view virtual returns (uint128);
/* ============ Internal Interactive Functions ============ */
/**
* @notice Updates the latest index and latest accrual time.
* @param index_ The new index to compute present amounts from principal amounts.
*/
function _updateIndex(uint128 index_) internal virtual {
if (index_ < latestIndex) revert DecreasingIndex(index_, latestIndex);
latestIndex = index_;
latestUpdateTimestamp = uint40(block.timestamp);
emit IndexUpdated(index_);
}
/* ============ Internal View/Pure Functions ============ */
/**
* @dev Returns the principal amount (rounded down) given the present amount, using the current index.
* @param presentAmount_ The present amount.
* @return The principal amount rounded down.
*/
function _getPrincipalAmountRoundedDown(uint240 presentAmount_) internal view returns (uint112) {
return _getPrincipalAmountRoundedDown(presentAmount_, currentIndex());
}
/**
* @dev Returns the principal amount (rounded up) given the present amount and an index.
* @param presentAmount_ The present amount.
* @return The principal amount rounded up.
*/
function _getPrincipalAmountRoundedUp(uint240 presentAmount_) internal view returns (uint112) {
return _getPrincipalAmountRoundedUp(presentAmount_, currentIndex());
}
/**
* @dev Returns the present amount (rounded down) given the principal amount and an index.
* @param principalAmount_ The principal amount.
* @param index_ An index.
* @return The present amount rounded down.
*/
function _getPresentAmountRoundedDown(uint112 principalAmount_, uint128 index_) internal pure returns (uint240) {
return ContinuousIndexingMath.multiplyDown(principalAmount_, index_);
}
/**
* @dev Returns the present amount (rounded up) given the principal amount and an index.
* @param principalAmount_ The principal amount.
* @param index_ An index.
* @return The present amount rounded up.
*/
function _getPresentAmountRoundedUp(uint112 principalAmount_, uint128 index_) internal pure returns (uint240) {
return ContinuousIndexingMath.multiplyUp(principalAmount_, index_);
}
/**
* @dev Returns the principal amount given the present amount, using the current index.
* @param presentAmount_ The present amount.
* @param index_ An index.
* @return The principal amount rounded down.
*/
function _getPrincipalAmountRoundedDown(uint240 presentAmount_, uint128 index_) internal pure returns (uint112) {
return ContinuousIndexingMath.divideDown(presentAmount_, index_);
}
/**
* @dev Returns the principal amount given the present amount, using the current index.
* @param presentAmount_ The present amount.
* @param index_ An index.
* @return The principal amount rounded up.
*/
function _getPrincipalAmountRoundedUp(uint240 presentAmount_, uint128 index_) internal pure returns (uint112) {
return ContinuousIndexingMath.divideUp(presentAmount_, index_);
}
}// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.26;
import { UIntMath } from "../../lib/common/src/libs/UIntMath.sol";
/**
* @title Arithmetic library with operations for calculating continuous indexing.
* @author M^0 Labs
*/
library ContinuousIndexingMath {
/* ============ Variables ============ */
/// @notice The scaling of rates in for exponent math.
uint56 internal constant EXP_SCALED_ONE = 1e12;
/* ============ Custom Errors ============ */
/// @notice Emitted when a division by zero occurs.
error DivisionByZero();
/* ============ Internal View/Pure Functions ============ */
/**
* @notice Helper function to calculate `(x * EXP_SCALED_ONE) / index`, rounded down.
* @dev Inspired by USM (https://github.com/usmfum/USM/blob/master/contracts/WadMath.sol)
*/
function divideDown(uint240 x, uint128 index) internal pure returns (uint112 z) {
if (index == 0) revert DivisionByZero();
unchecked {
// NOTE: While `uint256(x) * EXP_SCALED_ONE` can technically overflow, these divide/multiply functions are
// only used for the purpose of principal/present amount calculations for continuous indexing, and
// so for an `x` to be large enough to overflow this, it would have to be a possible result of
// `multiplyDown` or `multiplyUp`, which would already satisfy
// `uint256(x) * EXP_SCALED_ONE < type(uint240).max`.
return UIntMath.safe112((uint256(x) * EXP_SCALED_ONE) / index);
}
}
/**
* @notice Helper function to calculate `(x * EXP_SCALED_ONE) / index`, rounded up.
* @dev Inspired by USM (https://github.com/usmfum/USM/blob/master/contracts/WadMath.sol)
*/
function divideUp(uint240 x, uint128 index) internal pure returns (uint112 z) {
if (index == 0) revert DivisionByZero();
unchecked {
// NOTE: While `uint256(x) * EXP_SCALED_ONE` can technically overflow, these divide/multiply functions are
// only used for the purpose of principal/present amount calculations for continuous indexing, and
// so for an `x` to be large enough to overflow this, it would have to be a possible result of
// `multiplyDown` or `multiplyUp`, which would already satisfy
// `uint256(x) * EXP_SCALED_ONE < type(uint240).max`.
return UIntMath.safe112(((uint256(x) * EXP_SCALED_ONE) + index - 1) / index);
}
}
/**
* @notice Helper function to calculate `(x * index) / EXP_SCALED_ONE`, rounded down.
* @dev Inspired by USM (https://github.com/usmfum/USM/blob/master/contracts/WadMath.sol)
*/
function multiplyDown(uint112 x, uint128 index) internal pure returns (uint240 z) {
unchecked {
return uint240((uint256(x) * index) / EXP_SCALED_ONE);
}
}
/**
* @notice Helper function to calculate `(x * index) / EXP_SCALED_ONE`, rounded up.
* @dev Inspired by USM (https://github.com/usmfum/USM/blob/master/contracts/WadMath.sol)
*/
function multiplyUp(uint112 x, uint128 index) internal pure returns (uint240 z) {
unchecked {
return uint240(((uint256(x) * index) + (EXP_SCALED_ONE - 1)) / EXP_SCALED_ONE);
}
}
}// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.26;
import { IERC20 } from "./IERC20.sol";
import { IERC3009 } from "./IERC3009.sol";
/**
* @title An ERC20 token extended with EIP-2612 permits for signed approvals (via EIP-712
* and with EIP-1271 compatibility), and extended with EIP-3009 transfer with authorization (via EIP-712).
* @author M^0 Labs
* @dev The additional interface as defined by EIP-2612: https://eips.ethereum.org/EIPS/eip-2612
*/
interface IERC20Extended is IERC20, IERC3009 {
/* ============ Custom Errors ============ */
/**
* @notice Revert message when spender's allowance is not sufficient.
* @param spender Address that may be allowed to operate on tokens without being their owner.
* @param allowance Amount of tokens a `spender` is allowed to operate with.
* @param needed Minimum amount required to perform a transfer.
*/
error InsufficientAllowance(address spender, uint256 allowance, uint256 needed);
/**
* @notice Revert message emitted when the transferred amount is insufficient.
* @param amount Amount transferred.
*/
error InsufficientAmount(uint256 amount);
/**
* @notice Revert message emitted when the recipient of a token is invalid.
* @param recipient Address of the invalid recipient.
*/
error InvalidRecipient(address recipient);
/* ============ Interactive Functions ============ */
/**
* @notice Approves `spender` to spend up to `amount` of the token balance of `owner`, via a signature.
* @param owner The address of the account who's token balance is being approved to be spent by `spender`.
* @param spender The address of an account allowed to spend on behalf of `owner`.
* @param value The amount of the allowance being approved.
* @param deadline The last block number where the signature is still valid.
* @param v An ECDSA secp256k1 signature parameter (EIP-2612 via EIP-712).
* @param r An ECDSA secp256k1 signature parameter (EIP-2612 via EIP-712).
* @param s An ECDSA secp256k1 signature parameter (EIP-2612 via EIP-712).
*/
function permit(
address owner,
address spender,
uint256 value,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
) external;
/**
* @notice Approves `spender` to spend up to `amount` of the token balance of `owner`, via a signature.
* @param owner The address of the account who's token balance is being approved to be spent by `spender`.
* @param spender The address of an account allowed to spend on behalf of `owner`.
* @param value The amount of the allowance being approved.
* @param deadline The last block number where the signature is still valid.
* @param signature An arbitrary signature (EIP-712).
*/
function permit(address owner, address spender, uint256 value, uint256 deadline, bytes memory signature) external;
/* ============ View/Pure Functions ============ */
/// @notice Returns the EIP712 typehash used in the encoding of the digest for the permit function.
function PERMIT_TYPEHASH() external view returns (bytes32);
}// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.26;
/**
* @title A library to convert between string and bytes32 (assuming 32 characters or less).
* @author M^0 Labs
*/
library Bytes32String {
function toBytes32(string memory input_) internal pure returns (bytes32) {
return bytes32(abi.encodePacked(input_));
}
function toString(bytes32 input_) internal pure returns (string memory) {
uint256 length_;
while (length_ < 32 && uint8(input_[length_]) != 0) {
++length_;
}
bytes memory name_ = new bytes(length_);
for (uint256 index_; index_ < length_; ++index_) {
name_[index_] = input_[index_];
}
return string(name_);
}
}// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.26;
import { IERC3009 } from "./interfaces/IERC3009.sol";
import { StatefulERC712 } from "./StatefulERC712.sol";
/**
* @title ERC3009 implementation allowing the transfer of fungible assets via a signed authorization.
* @author M^0 Labs
* @dev Inherits from ERC712 and StatefulERC712.
*/
abstract contract ERC3009 is IERC3009, StatefulERC712 {
/* ============ Variables ============ */
// solhint-disable-next-line max-line-length
/// @dev keccak256("TransferWithAuthorization(address from,address to,uint256 value,uint256 validAfter,uint256 validBefore,bytes32 nonce)")
/// @inheritdoc IERC3009
bytes32 public constant TRANSFER_WITH_AUTHORIZATION_TYPEHASH =
0x7c7c6cdb67a18743f49ec6fa9b35f50d52ed05cbed4cc592e13b44501c1a2267;
// solhint-disable-next-line max-line-length
/// @dev keccak256("ReceiveWithAuthorization(address from,address to,uint256 value,uint256 validAfter,uint256 validBefore,bytes32 nonce)")
/// @inheritdoc IERC3009
bytes32 public constant RECEIVE_WITH_AUTHORIZATION_TYPEHASH =
0xd099cc98ef71107a616c4f0f941f04c322d8e254fe26b3c6668db87aae413de8;
/**
* @inheritdoc IERC3009
* @dev keccak256("CancelAuthorization(address authorizer,bytes32 nonce)")
*/
bytes32 public constant CANCEL_AUTHORIZATION_TYPEHASH =
0x158b0a9edf7a828aad02f63cd515c68ef2f50ba807396f6d12842833a1597429;
/// @inheritdoc IERC3009
mapping(address authorizer => mapping(bytes32 nonce => bool isNonceUsed)) public authorizationState;
/* ============ Constructor ============ */
/**
* @notice Construct the ERC3009 contract.
* @param name_ The name of the contract.
*/
constructor(string memory name_) StatefulERC712(name_) {}
/* ============ Interactive Functions ============ */
/// @inheritdoc IERC3009
function transferWithAuthorization(
address from_,
address to_,
uint256 value_,
uint256 validAfter_,
uint256 validBefore_,
bytes32 nonce_,
bytes memory signature_
) external {
_revertIfInvalidSignature(
from_,
_getTransferWithAuthorizationDigest(from_, to_, value_, validAfter_, validBefore_, nonce_),
signature_
);
_transferWithAuthorization(from_, to_, value_, validAfter_, validBefore_, nonce_);
}
/// @inheritdoc IERC3009
function transferWithAuthorization(
address from_,
address to_,
uint256 value_,
uint256 validAfter_,
uint256 validBefore_,
bytes32 nonce_,
bytes32 r_,
bytes32 vs_
) external {
_revertIfInvalidSignature(
from_,
_getTransferWithAuthorizationDigest(from_, to_, value_, validAfter_, validBefore_, nonce_),
r_,
vs_
);
_transferWithAuthorization(from_, to_, value_, validAfter_, validBefore_, nonce_);
}
/// @inheritdoc IERC3009
function transferWithAuthorization(
address from_,
address to_,
uint256 value_,
uint256 validAfter_,
uint256 validBefore_,
bytes32 nonce_,
uint8 v_,
bytes32 r_,
bytes32 s_
) external {
_revertIfInvalidSignature(
from_,
_getTransferWithAuthorizationDigest(from_, to_, value_, validAfter_, validBefore_, nonce_),
v_,
r_,
s_
);
_transferWithAuthorization(from_, to_, value_, validAfter_, validBefore_, nonce_);
}
/// @inheritdoc IERC3009
function receiveWithAuthorization(
address from_,
address to_,
uint256 value_,
uint256 validAfter_,
uint256 validBefore_,
bytes32 nonce_,
bytes memory signature_
) external {
_revertIfInvalidSignature(
from_,
_getReceiveWithAuthorizationDigest(from_, to_, value_, validAfter_, validBefore_, nonce_),
signature_
);
_receiveWithAuthorization(from_, to_, value_, validAfter_, validBefore_, nonce_);
}
/// @inheritdoc IERC3009
function receiveWithAuthorization(
address from_,
address to_,
uint256 value_,
uint256 validAfter_,
uint256 validBefore_,
bytes32 nonce_,
bytes32 r_,
bytes32 vs_
) external {
_revertIfInvalidSignature(
from_,
_getReceiveWithAuthorizationDigest(from_, to_, value_, validAfter_, validBefore_, nonce_),
r_,
vs_
);
_receiveWithAuthorization(from_, to_, value_, validAfter_, validBefore_, nonce_);
}
/// @inheritdoc IERC3009
function receiveWithAuthorization(
address from_,
address to_,
uint256 value_,
uint256 validAfter_,
uint256 validBefore_,
bytes32 nonce_,
uint8 v_,
bytes32 r_,
bytes32 s_
) external {
_revertIfInvalidSignature(
from_,
_getReceiveWithAuthorizationDigest(from_, to_, value_, validAfter_, validBefore_, nonce_),
v_,
r_,
s_
);
_receiveWithAuthorization(from_, to_, value_, validAfter_, validBefore_, nonce_);
}
/// @inheritdoc IERC3009
function cancelAuthorization(address authorizer_, bytes32 nonce_, bytes memory signature_) external {
_revertIfInvalidSignature(authorizer_, _getCancelAuthorizationDigest(authorizer_, nonce_), signature_);
_cancelAuthorization(authorizer_, nonce_);
}
/// @inheritdoc IERC3009
function cancelAuthorization(address authorizer_, bytes32 nonce_, bytes32 r_, bytes32 vs_) external {
_revertIfInvalidSignature(authorizer_, _getCancelAuthorizationDigest(authorizer_, nonce_), r_, vs_);
_cancelAuthorization(authorizer_, nonce_);
}
/// @inheritdoc IERC3009
function cancelAuthorization(address authorizer_, bytes32 nonce_, uint8 v_, bytes32 r_, bytes32 s_) external {
_revertIfInvalidSignature(authorizer_, _getCancelAuthorizationDigest(authorizer_, nonce_), v_, r_, s_);
_cancelAuthorization(authorizer_, nonce_);
}
/* ============ Internal Interactive Functions ============ */
/**
* @dev Common transfer function used by `transferWithAuthorization` and `_receiveWithAuthorization`.
* @param from_ Payer's address (Authorizer).
* @param to_ Payee's address.
* @param value_ Amount to be transferred.
* @param validAfter_ The time after which this is valid (unix time).
* @param validBefore_ The time before which this is valid (unix time).
* @param nonce_ Unique nonce.
*/
function _transferWithAuthorization(
address from_,
address to_,
uint256 value_,
uint256 validAfter_,
uint256 validBefore_,
bytes32 nonce_
) internal {
if (block.timestamp <= validAfter_) revert AuthorizationNotYetValid(block.timestamp, validAfter_);
if (block.timestamp >= validBefore_) revert AuthorizationExpired(block.timestamp, validBefore_);
_revertIfAuthorizationAlreadyUsed(from_, nonce_);
authorizationState[from_][nonce_] = true;
emit AuthorizationUsed(from_, nonce_);
_transfer(from_, to_, value_);
}
/**
* @dev Common receive function used by `receiveWithAuthorization`.
* @param from_ Payer's address (Authorizer).
* @param to_ Payee's address.
* @param value_ Amount to be transferred.
* @param validAfter_ The time after which this is valid (unix time).
* @param validBefore_ The time before which this is valid (unix time).
* @param nonce_ Unique nonce.
*/
function _receiveWithAuthorization(
address from_,
address to_,
uint256 value_,
uint256 validAfter_,
uint256 validBefore_,
bytes32 nonce_
) internal {
if (msg.sender != to_) revert CallerMustBePayee(msg.sender, to_);
_transferWithAuthorization(from_, to_, value_, validAfter_, validBefore_, nonce_);
}
/**
* @dev Common cancel function used by `cancelAuthorization`.
* @param authorizer_ Authorizer's address.
* @param nonce_ Nonce of the authorization.
*/
function _cancelAuthorization(address authorizer_, bytes32 nonce_) internal {
_revertIfAuthorizationAlreadyUsed(authorizer_, nonce_);
authorizationState[authorizer_][nonce_] = true;
emit AuthorizationCanceled(authorizer_, nonce_);
}
/**
* @dev Internal ERC20 transfer function that needs to be implemented by the inheriting contract.
* @param sender_ The sender's address.
* @param recipient_ The recipient's address.
* @param amount_ The amount to be transferred.
*/
function _transfer(address sender_, address recipient_, uint256 amount_) internal virtual;
/* ============ Internal View/Pure Functions ============ */
/**
* @dev Returns the internal EIP-712 digest of a transferWithAuthorization call.
* @param from_ Payer's address (Authorizer).
* @param to_ Payee's address.
* @param value_ Amount to be transferred.
* @param validAfter_ The time after which this is valid (unix time).
* @param validBefore_ The time before which this is valid (unix time).
* @param nonce_ Unique nonce.
* @return The internal EIP-712 digest.
*/
function _getTransferWithAuthorizationDigest(
address from_,
address to_,
uint256 value_,
uint256 validAfter_,
uint256 validBefore_,
bytes32 nonce_
) internal view returns (bytes32) {
return
_getDigest(
keccak256(
abi.encode(
TRANSFER_WITH_AUTHORIZATION_TYPEHASH,
from_,
to_,
value_,
validAfter_,
validBefore_,
nonce_
)
)
);
}
/**
* @dev Returns the internal EIP-712 digest of a receiveWithAuthorization call.
* @param from_ Payer's address (Authorizer).
* @param to_ Payee's address.
* @param value_ Amount to be transferred.
* @param validAfter_ The time after which this is valid (unix time).
* @param validBefore_ The time before which this is valid (unix time).
* @param nonce_ Unique nonce.
* @return The internal EIP-712 digest.
*/
function _getReceiveWithAuthorizationDigest(
address from_,
address to_,
uint256 value_,
uint256 validAfter_,
uint256 validBefore_,
bytes32 nonce_
) internal view returns (bytes32) {
return
_getDigest(
keccak256(
abi.encode(
RECEIVE_WITH_AUTHORIZATION_TYPEHASH,
from_,
to_,
value_,
validAfter_,
validBefore_,
nonce_
)
)
);
}
/**
* @dev Returns the internal EIP-712 digest of a cancelAuthorization call.
* @param authorizer_ Authorizer's address.
* @param nonce_ Nonce of the authorization.
* @return The internal EIP-712 digest.
*/
function _getCancelAuthorizationDigest(address authorizer_, bytes32 nonce_) internal view returns (bytes32) {
return _getDigest(keccak256(abi.encode(CANCEL_AUTHORIZATION_TYPEHASH, authorizer_, nonce_)));
}
/**
* @dev Reverts if the authorization is already used.
* @param authorizer_ The authorizer's address.
* @param nonce_ The nonce of the authorization.
*/
function _revertIfAuthorizationAlreadyUsed(address authorizer_, bytes32 nonce_) internal view {
if (authorizationState[authorizer_][nonce_]) revert AuthorizationAlreadyUsed(authorizer_, nonce_);
}
}// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.26;
/**
* @title Registrar interface.
* @author M^0 Labs
*/
interface IRegistrar {
/**
* @notice Key value pair getter.
* @param key The key to get the value of.
* @return value The value of the key.
*/
function get(bytes32 key) external view returns (bytes32 value);
/**
* @notice Checks if the list contains the account.
* @param list The list to check.
* @param account The account to check.
* @return contains True if the list contains the account, false otherwise.
*/
function listContains(bytes32 list, address account) external view returns (bool contains);
/// @notice Returns the Portal contract address.
function portal() external view returns (address portal);
}// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.26;
import { IStatefulERC712 } from "./IStatefulERC712.sol";
/**
* @title Transfer via signed authorization following EIP-3009 standard.
* @author M^0 Labs
* @dev The interface as defined by EIP-3009: https://eips.ethereum.org/EIPS/eip-3009
*/
interface IERC3009 is IStatefulERC712 {
/* ============ Events ============ */
/**
* @notice Emitted when an authorization has been canceled.
* @param authorizer Authorizer's address.
* @param nonce Nonce of the canceled authorization.
*/
event AuthorizationCanceled(address indexed authorizer, bytes32 indexed nonce);
/**
* @notice Emitted when an authorization has been used.
* @param authorizer Authorizer's address.
* @param nonce Nonce of the used authorization.
*/
event AuthorizationUsed(address indexed authorizer, bytes32 indexed nonce);
/* ============ Custom Errors ============ */
/**
* @notice Emitted when an authorization has already been used.
* @param authorizer Authorizer's address.
* @param nonce Nonce of the used authorization.
*/
error AuthorizationAlreadyUsed(address authorizer, bytes32 nonce);
/**
* @notice Emitted when an authorization is expired.
* @param timestamp Timestamp at which the transaction was submitted.
* @param validBefore Timestamp before which the authorization would have been valid.
*/
error AuthorizationExpired(uint256 timestamp, uint256 validBefore);
/**
* @notice Emitted when an authorization is not yet valid.
* @param timestamp Timestamp at which the transaction was submitted.
* @param validAfter Timestamp after which the authorization will be valid.
*/
error AuthorizationNotYetValid(uint256 timestamp, uint256 validAfter);
/**
* @notice Emitted when the caller of `receiveWithAuthorization` is not the payee.
* @param caller Caller's address.
* @param payee Payee's address.
*/
error CallerMustBePayee(address caller, address payee);
/* ============ Interactive Functions ============ */
/**
* @notice Execute a transfer with a signed authorization.
* @param from Payer's address (Authorizer).
* @param to Payee's address.
* @param value Amount to be transferred.
* @param validAfter The time after which this is valid (unix time).
* @param validBefore The time before which this is valid (unix time).
* @param nonce Unique nonce.
* @param signature A byte array ECDSA/secp256k1 signature (encoded r, s, v).
*/
function transferWithAuthorization(
address from,
address to,
uint256 value,
uint256 validAfter,
uint256 validBefore,
bytes32 nonce,
bytes memory signature
) external;
/**
* @notice Execute a transfer with a signed authorization.
* @param from Payer's address (Authorizer).
* @param to Payee's address.
* @param value Amount to be transferred.
* @param validAfter The time after which this is valid (unix time).
* @param validBefore The time before which this is valid (unix time).
* @param nonce Unique nonce.
* @param r An ECDSA/secp256k1 signature parameter.
* @param vs An ECDSA/secp256k1 short signature parameter.
*/
function transferWithAuthorization(
address from,
address to,
uint256 value,
uint256 validAfter,
uint256 validBefore,
bytes32 nonce,
bytes32 r,
bytes32 vs
) external;
/**
* @notice Execute a transfer with a signed authorization.
* @param from Payer's address (Authorizer).
* @param to Payee's address.
* @param value Amount to be transferred.
* @param validAfter The time after which this is valid (unix time).
* @param validBefore The time before which this is valid (unix time).
* @param nonce Unique nonce.
* @param v v of the signature.
* @param r r of the signature.
* @param s s of the signature.
*/
function transferWithAuthorization(
address from,
address to,
uint256 value,
uint256 validAfter,
uint256 validBefore,
bytes32 nonce,
uint8 v,
bytes32 r,
bytes32 s
) external;
/**
* @notice Receive a transfer with a signed authorization from the payer.
* @dev This has an additional check to ensure that the payee's address matches
* the caller of this function to prevent front-running attacks.
* (See security considerations)
* @param from Payer's address (Authorizer).
* @param to Payee's address.
* @param value Amount to be transferred.
* @param validAfter The time after which this is valid (unix time).
* @param validBefore The time before which this is valid (unix time).
* @param nonce Unique nonce.
* @param signature A byte array ECDSA/secp256k1 signature (encoded r, s, v).
*/
function receiveWithAuthorization(
address from,
address to,
uint256 value,
uint256 validAfter,
uint256 validBefore,
bytes32 nonce,
bytes memory signature
) external;
/**
* @notice Receive a transfer with a signed authorization from the payer.
* @dev This has an additional check to ensure that the payee's address matches
* the caller of this function to prevent front-running attacks.
* (See security considerations)
* @param from Payer's address (Authorizer).
* @param to Payee's address.
* @param value Amount to be transferred.
* @param validAfter The time after which this is valid (unix time).
* @param validBefore The time before which this is valid (unix time).
* @param nonce Unique nonce.
* @param r An ECDSA/secp256k1 signature parameter.
* @param vs An ECDSA/secp256k1 short signature parameter.
*/
function receiveWithAuthorization(
address from,
address to,
uint256 value,
uint256 validAfter,
uint256 validBefore,
bytes32 nonce,
bytes32 r,
bytes32 vs
) external;
/**
* @notice Receive a transfer with a signed authorization from the payer.
* @dev This has an additional check to ensure that the payee's address matches
* the caller of this function to prevent front-running attacks.
* (See security considerations)
* @param from Payer's address (Authorizer).
* @param to Payee's address.
* @param value Amount to be transferred.
* @param validAfter The time after which this is valid (unix time).
* @param validBefore The time before which this is valid (unix time).
* @param nonce Unique nonce.
* @param v v of the signature.
* @param r r of the signature.
* @param s s of the signature.
*/
function receiveWithAuthorization(
address from,
address to,
uint256 value,
uint256 validAfter,
uint256 validBefore,
bytes32 nonce,
uint8 v,
bytes32 r,
bytes32 s
) external;
/**
* @notice Attempt to cancel an authorization.
* @param authorizer Authorizer's address.
* @param nonce Nonce of the authorization.
* @param signature A byte array ECDSA/secp256k1 signature (encoded r, s, v).
*/
function cancelAuthorization(address authorizer, bytes32 nonce, bytes memory signature) external;
/**
* @notice Attempt to cancel an authorization.
* @param authorizer Authorizer's address.
* @param nonce Nonce of the authorization.
* @param r An ECDSA/secp256k1 signature parameter.
* @param vs An ECDSA/secp256k1 short signature parameter.
*/
function cancelAuthorization(address authorizer, bytes32 nonce, bytes32 r, bytes32 vs) external;
/**
* @notice Attempt to cancel an authorization.
* @param authorizer Authorizer's address.
* @param nonce Nonce of the authorization.
* @param v v of the signature.
* @param r r of the signature.
* @param s s of the signature.
*/
function cancelAuthorization(address authorizer, bytes32 nonce, uint8 v, bytes32 r, bytes32 s) external;
/* ============ View/Pure Functions ============ */
/**
* @notice Returns the state of an authorization.
* @dev Nonces are randomly generated 32-byte data unique to the authorizer's address
* @param authorizer Authorizer's address.
* @param nonce Nonce of the authorization.
* @return True if the nonce is used.
*/
function authorizationState(address authorizer, bytes32 nonce) external view returns (bool);
/// @notice Returns `transferWithAuthorization` typehash.
function TRANSFER_WITH_AUTHORIZATION_TYPEHASH() external view returns (bytes32);
/// @notice Returns `receiveWithAuthorization` typehash.
function RECEIVE_WITH_AUTHORIZATION_TYPEHASH() external view returns (bytes32);
/// @notice Returns `cancelAuthorization` typehash.
function CANCEL_AUTHORIZATION_TYPEHASH() external view returns (bytes32);
}// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.26;
import { IStatefulERC712 } from "./interfaces/IStatefulERC712.sol";
import { ERC712Extended } from "./ERC712Extended.sol";
/**
* @title Stateful Extension for EIP-712 typed structured data hashing and signing with nonces.
* @author M^0 Labs
* @dev An abstract implementation to satisfy stateful EIP-712 with nonces.
*/
abstract contract StatefulERC712 is IStatefulERC712, ERC712Extended {
/// @inheritdoc IStatefulERC712
mapping(address account => uint256 nonce) public nonces; // Nonces for all signatures.
/**
* @notice Construct the StatefulERC712 contract.
* @param name_ The name of the contract.
*/
constructor(string memory name_) ERC712Extended(name_) {}
}// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.26;
import { IERC712Extended } from "./IERC712Extended.sol";
/**
* @title Stateful Extension for EIP-712 typed structured data hashing and signing with nonces.
* @author M^0 Labs
*/
interface IStatefulERC712 is IERC712Extended {
/* ============ Custom Errors ============ */
/**
* @notice Revert message when a signing account's nonce is not the expected current nonce.
* @param nonce The nonce used in the signature.
* @param expectedNonce The expected nonce to be used in a signature by the signing account.
*/
error InvalidAccountNonce(uint256 nonce, uint256 expectedNonce);
/* ============ View/Pure Functions ============ */
/**
* @notice Returns the next nonce to be used in a signature by `account`.
* @param account The address of some account.
* @return nonce The next nonce to be used in a signature by `account`.
*/
function nonces(address account) external view returns (uint256 nonce);
}// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.26;
import { IERC712 } from "./interfaces/IERC712.sol";
import { IERC712Extended } from "./interfaces/IERC712Extended.sol";
import { Bytes32String } from "./libs/Bytes32String.sol";
import { SignatureChecker } from "./libs/SignatureChecker.sol";
/**
* @title Typed structured data hashing and signing via EIP-712, extended by EIP-5267.
* @author M^0 Labs
* @dev An abstract implementation to satisfy EIP-712: https://eips.ethereum.org/EIPS/eip-712
*/
abstract contract ERC712Extended is IERC712Extended {
/* ============ Variables ============ */
/// @dev keccak256("EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)")
bytes32 internal constant _EIP712_DOMAIN_HASH = 0x8b73c3c69bb8fe3d512ecc4cf759cc79239f7b179b0ffacaa9a75d522b39400f;
/// @dev keccak256("1")
bytes32 internal constant _EIP712_VERSION_HASH = 0xc89efdaa54c0f20c7adf612882df0950f5a951637e0307cdcb4c672f298b8bc6;
/// @dev Initial Chain ID set at deployment.
uint256 internal immutable _INITIAL_CHAIN_ID;
/// @dev Initial EIP-712 domain separator set at deployment.
bytes32 internal immutable _INITIAL_DOMAIN_SEPARATOR;
/// @dev The name of the contract (stored as a bytes32 instead of a string in order to be immutable).
bytes32 internal immutable _name;
/* ============ Constructor ============ */
/**
* @notice Constructs the EIP-712 domain separator.
* @param name_ The name of the contract.
*/
constructor(string memory name_) {
_name = Bytes32String.toBytes32(name_);
_INITIAL_CHAIN_ID = block.chainid;
_INITIAL_DOMAIN_SEPARATOR = _getDomainSeparator();
}
/* ============ View/Pure Functions ============ */
/// @inheritdoc IERC712Extended
function eip712Domain()
external
view
virtual
returns (
bytes1 fields_,
string memory name_,
string memory version_,
uint256 chainId_,
address verifyingContract_,
bytes32 salt_,
uint256[] memory extensions_
)
{
return (
hex"0f", // 01111
Bytes32String.toString(_name),
"1",
block.chainid,
address(this),
bytes32(0),
new uint256[](0)
);
}
/// @inheritdoc IERC712
function DOMAIN_SEPARATOR() public view virtual returns (bytes32) {
return block.chainid == _INITIAL_CHAIN_ID ? _INITIAL_DOMAIN_SEPARATOR : _getDomainSeparator();
}
/* ============ Internal View/Pure Functions ============ */
/**
* @dev Computes the EIP-712 domain separator.
* @return The EIP-712 domain separator.
*/
function _getDomainSeparator() internal view returns (bytes32) {
return
keccak256(
abi.encode(
_EIP712_DOMAIN_HASH,
keccak256(bytes(Bytes32String.toString(_name))),
_EIP712_VERSION_HASH,
block.chainid,
address(this)
)
);
}
/**
* @dev Returns the digest to be signed, via EIP-712, given an internal digest (i.e. hash struct).
* @param internalDigest_ The internal digest.
* @return The digest to be signed.
*/
function _getDigest(bytes32 internalDigest_) internal view returns (bytes32) {
return keccak256(abi.encodePacked("\x19\x01", DOMAIN_SEPARATOR(), internalDigest_));
}
/**
* @dev Revert if the signature is expired.
* @param expiry_ Timestamp at which the signature expires or max uint256 for no expiry.
*/
function _revertIfExpired(uint256 expiry_) internal view {
if (block.timestamp > expiry_) revert SignatureExpired(expiry_, block.timestamp);
}
/**
* @dev Revert if the signature is invalid.
* @dev We first validate if the signature is a valid ECDSA signature and return early if it is the case.
* Then, we validate if it is a valid ERC-1271 signature, and return early if it is the case.
* If not, we revert with the error from the ECDSA signature validation.
* @param signer_ The signer of the signature.
* @param digest_ The digest that was signed.
* @param signature_ The signature.
*/
function _revertIfInvalidSignature(address signer_, bytes32 digest_, bytes memory signature_) internal view {
SignatureChecker.Error error_ = SignatureChecker.validateECDSASignature(signer_, digest_, signature_);
if (error_ == SignatureChecker.Error.NoError) return;
if (SignatureChecker.isValidERC1271Signature(signer_, digest_, signature_)) return;
_revertIfError(error_);
}
/**
* @dev Returns the signer of a signed digest, via EIP-712, and reverts if the signature is invalid.
* @param digest_ The digest that was signed.
* @param v_ v of the signature.
* @param r_ r of the signature.
* @param s_ s of the signature.
* @return signer_ The signer of the digest.
*/
function _getSignerAndRevertIfInvalidSignature(
bytes32 digest_,
uint8 v_,
bytes32 r_,
bytes32 s_
) internal pure returns (address signer_) {
SignatureChecker.Error error_;
(error_, signer_) = SignatureChecker.recoverECDSASigner(digest_, v_, r_, s_);
_revertIfError(error_);
}
/**
* @dev Revert if the signature is invalid.
* @param signer_ The signer of the signature.
* @param digest_ The digest that was signed.
* @param r_ An ECDSA/secp256k1 signature parameter.
* @param vs_ An ECDSA/secp256k1 short signature parameter.
*/
function _revertIfInvalidSignature(address signer_, bytes32 digest_, bytes32 r_, bytes32 vs_) internal pure {
_revertIfError(SignatureChecker.validateECDSASignature(signer_, digest_, r_, vs_));
}
/**
* @dev Revert if the signature is invalid.
* @param signer_ The signer of the signature.
* @param digest_ The digest that was signed.
* @param v_ v of the signature.
* @param r_ r of the signature.
* @param s_ s of the signature.
*/
function _revertIfInvalidSignature(
address signer_,
bytes32 digest_,
uint8 v_,
bytes32 r_,
bytes32 s_
) internal pure {
_revertIfError(SignatureChecker.validateECDSASignature(signer_, digest_, v_, r_, s_));
}
/**
* @dev Revert if error.
* @param error_ The SignatureChecker Error enum.
*/
function _revertIfError(SignatureChecker.Error error_) private pure {
if (error_ == SignatureChecker.Error.NoError) return;
if (error_ == SignatureChecker.Error.InvalidSignature) revert InvalidSignature();
if (error_ == SignatureChecker.Error.InvalidSignatureLength) revert InvalidSignatureLength();
if (error_ == SignatureChecker.Error.InvalidSignatureS) revert InvalidSignatureS();
if (error_ == SignatureChecker.Error.InvalidSignatureV) revert InvalidSignatureV();
if (error_ == SignatureChecker.Error.SignerMismatch) revert SignerMismatch();
revert InvalidSignature();
}
}// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.26;
import { IERC712 } from "./IERC712.sol";
/**
* @title EIP-712 extended by EIP-5267.
* @author M^0 Labs
* @dev The additional interface as defined by EIP-5267: https://eips.ethereum.org/EIPS/eip-5267
*/
interface IERC712Extended is IERC712 {
/* ============ Events ============ */
/// @notice MAY be emitted to signal that the domain could have changed.
event EIP712DomainChanged();
/* ============ View/Pure Functions ============ */
/// @notice Returns the fields and values that describe the domain separator used by this contract for EIP-712.
function eip712Domain()
external
view
returns (
bytes1 fields,
string memory name,
string memory version,
uint256 chainId,
address verifyingContract,
bytes32 salt,
uint256[] memory extensions
);
}// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.26;
/**
* @title Typed structured data hashing and signing via EIP-712.
* @author M^0 Labs
* @dev The interface as defined by EIP-712: https://eips.ethereum.org/EIPS/eip-712
*/
interface IERC712 {
/* ============ Custom Errors ============ */
/// @notice Revert message when an invalid signature is detected.
error InvalidSignature();
/// @notice Revert message when a signature with invalid length is detected.
error InvalidSignatureLength();
/// @notice Revert message when the S portion of a signature is invalid.
error InvalidSignatureS();
/// @notice Revert message when the V portion of a signature is invalid.
error InvalidSignatureV();
/**
* @notice Revert message when a signature is being used beyond its deadline (i.e. expiry).
* @param deadline The deadline of the signature.
* @param timestamp The current timestamp.
*/
error SignatureExpired(uint256 deadline, uint256 timestamp);
/// @notice Revert message when a recovered signer does not match the account being purported to have signed.
error SignerMismatch();
/* ============ View/Pure Functions ============ */
/// @notice Returns the EIP712 domain separator used in the encoding of a signed digest.
function DOMAIN_SEPARATOR() external view returns (bytes32);
}// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.26;
import { IERC1271 } from "../interfaces/IERC1271.sol";
/**
* @title A library to handle ECDSA/secp256k1 and ERC1271 signatures, individually or in arbitrarily in combination.
* @author M^0 Labs
*/
library SignatureChecker {
/* ============ Enums ============ */
/**
* @notice An enum representing the possible errors that can be emitted during signature validation.
* @param NoError No error occurred during signature validation.
* @param InvalidSignature The signature is invalid.
* @param InvalidSignatureLength The signature length is invalid.
* @param InvalidSignatureS The signature parameter S is invalid.
* @param InvalidSignatureV The signature parameter V is invalid.
* @param SignerMismatch The signer does not match the recovered signer.
*/
enum Error {
NoError,
InvalidSignature,
InvalidSignatureLength,
InvalidSignatureS,
InvalidSignatureV,
SignerMismatch
}
/* ============ Internal View/Pure Functions ============ */
/**
* @dev Returns whether a signature is valid (ECDSA/secp256k1 or ERC1271) for a signer and digest.
* @dev Signatures must not be used as unique identifiers since the `ecrecover` EVM opcode
* allows for malleable (non-unique) signatures.
* See https://github.com/OpenZeppelin/openzeppelin-contracts/security/advisories/GHSA-4h98-2769-gh6h
* @param signer The address of the account purported to have signed.
* @param digest The hash of the data that was signed.
* @param signature A byte array signature.
* @return Whether the signature is valid or not.
*/
function isValidSignature(address signer, bytes32 digest, bytes memory signature) internal view returns (bool) {
return isValidECDSASignature(signer, digest, signature) || isValidERC1271Signature(signer, digest, signature);
}
/**
* @dev Returns whether an ERC1271 signature is valid for a signer and digest.
* @param signer The address of the account purported to have signed.
* @param digest The hash of the data that was signed.
* @param signature A byte array ERC1271 signature.
* @return Whether the signature is valid or not.
*/
function isValidERC1271Signature(
address signer,
bytes32 digest,
bytes memory signature
) internal view returns (bool) {
(bool success, bytes memory result) = signer.staticcall(
abi.encodeCall(IERC1271.isValidSignature, (digest, signature))
);
return
success &&
result.length >= 32 &&
abi.decode(result, (bytes32)) == bytes32(IERC1271.isValidSignature.selector);
}
/**
* @dev Decodes an ECDSA/secp256k1 signature from a byte array to standard v, r, and s parameters.
* @param signature A byte array ECDSA/secp256k1 signature.
* @return v An ECDSA/secp256k1 signature parameter.
* @return r An ECDSA/secp256k1 signature parameter.
* @return s An ECDSA/secp256k1 signature parameter.
*/
function decodeECDSASignature(bytes memory signature) internal pure returns (uint8 v, bytes32 r, bytes32 s) {
// ecrecover takes the signature parameters, and they can be decoded using assembly.
/// @solidity memory-safe-assembly
assembly {
r := mload(add(signature, 0x20))
s := mload(add(signature, 0x40))
v := byte(0, mload(add(signature, 0x60)))
}
}
/**
* @dev Decodes an ECDSA/secp256k1 short signature as defined by EIP2098
* from a byte array to standard v, r, and s parameters.
* @param signature A byte array ECDSA/secp256k1 short signature.
* @return r An ECDSA/secp256k1 signature parameter.
* @return vs An ECDSA/secp256k1 short signature parameter.
*/
function decodeShortECDSASignature(bytes memory signature) internal pure returns (bytes32 r, bytes32 vs) {
// ecrecover takes the signature parameters, and they can be decoded using assembly.
/// @solidity memory-safe-assembly
assembly {
r := mload(add(signature, 0x20))
vs := mload(add(signature, 0x40))
}
}
/**
* @dev Returns whether an ECDSA/secp256k1 signature is valid for a signer and digest.
* @param signer The address of the account purported to have signed.
* @param digest The hash of the data that was signed.
* @param signature A byte array ECDSA/secp256k1 signature (encoded r, s, v).
* @return Whether the signature is valid or not.
*/
function isValidECDSASignature(
address signer,
bytes32 digest,
bytes memory signature
) internal pure returns (bool) {
if (signature.length == 64) {
(bytes32 r, bytes32 vs) = decodeShortECDSASignature(signature);
return isValidECDSASignature(signer, digest, r, vs);
}
return validateECDSASignature(signer, digest, signature) == Error.NoError;
}
/**
* @dev Returns whether an ECDSA/secp256k1 short signature is valid for a signer and digest.
* @param signer The address of the account purported to have signed.
* @param digest The hash of the data that was signed.
* @param r An ECDSA/secp256k1 signature parameter.
* @param vs An ECDSA/secp256k1 short signature parameter.
* @return Whether the signature is valid or not.
*/
function isValidECDSASignature(address signer, bytes32 digest, bytes32 r, bytes32 vs) internal pure returns (bool) {
return validateECDSASignature(signer, digest, r, vs) == Error.NoError;
}
/**
* @dev Returns the signer of an ECDSA/secp256k1 signature for some digest.
* @param digest The hash of the data that was signed.
* @param signature A byte array ECDSA/secp256k1 signature.
* @return An error, if any, that occurred during the signer recovery.
* @return The address of the account recovered form the signature (0 if error).
*/
function recoverECDSASigner(bytes32 digest, bytes memory signature) internal pure returns (Error, address) {
if (signature.length != 65) return (Error.InvalidSignatureLength, address(0));
(uint8 v, bytes32 r, bytes32 s) = decodeECDSASignature(signature);
return recoverECDSASigner(digest, v, r, s);
}
/**
* @dev Returns the signer of an ECDSA/secp256k1 short signature for some digest.
* @dev See https://eips.ethereum.org/EIPS/eip-2098
* @param digest The hash of the data that was signed.
* @param r An ECDSA/secp256k1 signature parameter.
* @param vs An ECDSA/secp256k1 short signature parameter.
* @return An error, if any, that occurred during the signer recovery.
* @return The address of the account recovered form the signature (0 if error).
*/
function recoverECDSASigner(bytes32 digest, bytes32 r, bytes32 vs) internal pure returns (Error, address) {
unchecked {
// We do not check for an overflow here since the shift operation results in 0 or 1.
uint8 v = uint8((uint256(vs) >> 255) + 27);
bytes32 s = vs & bytes32(0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff);
return recoverECDSASigner(digest, v, r, s);
}
}
/**
* @dev Returns the signer of an ECDSA/secp256k1 signature for some digest.
* @param digest The hash of the data that was signed.
* @param v An ECDSA/secp256k1 signature parameter.
* @param r An ECDSA/secp256k1 signature parameter.
* @param s An ECDSA/secp256k1 signature parameter.
* @return An error, if any, that occurred during the signer recovery.
* @return signer The address of the account recovered form the signature (0 if error).
*/
function recoverECDSASigner(
bytes32 digest,
uint8 v,
bytes32 r,
bytes32 s
) internal pure returns (Error, address signer) {
// Appendix F in the Ethereum Yellow paper (https://ethereum.github.io/yellowpaper/paper.pdf), defines
// the valid range for s in (301): 0 < s < secp256k1n ÷ 2 + 1, and for v in (302): v ∈ {27, 28}.
if (uint256(s) > uint256(0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0))
return (Error.InvalidSignatureS, address(0));
if (v != 27 && v != 28) return (Error.InvalidSignatureV, address(0));
signer = ecrecover(digest, v, r, s);
return (signer == address(0)) ? (Error.InvalidSignature, address(0)) : (Error.NoError, signer);
}
/**
* @dev Returns an error, if any, in validating an ECDSA/secp256k1 signature for a signer and digest.
* @param signer The address of the account purported to have signed.
* @param digest The hash of the data that was signed.
* @param signature A byte array ERC1271 signature.
* @return An error, if any, that occurred during the signer recovery.
*/
function validateECDSASignature(
address signer,
bytes32 digest,
bytes memory signature
) internal pure returns (Error) {
(Error recoverError, address recoveredSigner) = recoverECDSASigner(digest, signature);
return (recoverError == Error.NoError) ? validateRecoveredSigner(signer, recoveredSigner) : recoverError;
}
/**
* @dev Returns an error, if any, in validating an ECDSA/secp256k1 short signature for a signer and digest.
* @param signer The address of the account purported to have signed.
* @param digest The hash of the data that was signed.
* @param r An ECDSA/secp256k1 signature parameter.
* @param vs An ECDSA/secp256k1 short signature parameter.
* @return An error, if any, that occurred during the signer recovery.
*/
function validateECDSASignature(
address signer,
bytes32 digest,
bytes32 r,
bytes32 vs
) internal pure returns (Error) {
(Error recoverError, address recoveredSigner) = recoverECDSASigner(digest, r, vs);
return (recoverError == Error.NoError) ? validateRecoveredSigner(signer, recoveredSigner) : recoverError;
}
/**
* @dev Returns an error, if any, in validating an ECDSA/secp256k1 signature for a signer and digest.
* @param signer The address of the account purported to have signed.
* @param digest The hash of the data that was signed.
* @param v An ECDSA/secp256k1 signature parameter.
* @param r An ECDSA/secp256k1 signature parameter.
* @param s An ECDSA/secp256k1 signature parameter.
* @return An error, if any, that occurred during the signer recovery.
*/
function validateECDSASignature(
address signer,
bytes32 digest,
uint8 v,
bytes32 r,
bytes32 s
) internal pure returns (Error) {
(Error recoverError, address recoveredSigner) = recoverECDSASigner(digest, v, r, s);
return (recoverError == Error.NoError) ? validateRecoveredSigner(signer, recoveredSigner) : recoverError;
}
/**
* @dev Returns an error if `signer` is not `recoveredSigner`.
* @param signer The address of the some signer.
* @param recoveredSigner The address of the some recoveredSigner.
* @return An error if `signer` is not `recoveredSigner`.
*/
function validateRecoveredSigner(address signer, address recoveredSigner) internal pure returns (Error) {
return (signer == recoveredSigner) ? Error.NoError : Error.SignerMismatch;
}
}// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.26;
/**
* @title Standard Signature Validation Method for Contracts via EIP-1271.
* @author M^0 Labs
* @dev The interface as defined by EIP-1271: https://eips.ethereum.org/EIPS/eip-1271
*/
interface IERC1271 {
/**
* @dev Returns a specific magic value if the provided signature is valid for the provided digest.
* @param digest Hash of the data purported to have been signed.
* @param signature Signature byte array associated with the digest.
* @return magicValue Magic value 0x1626ba7e if the signature is valid.
*/
function isValidSignature(bytes32 digest, bytes memory signature) external view returns (bytes4 magicValue);
}{
"remappings": [
"common/=lib/common/src/",
"ds-test/=lib/native-token-transfers/evm/lib/forge-std/lib/ds-test/src/",
"forge-std/=lib/forge-std/src/",
"native-token-transfers/=lib/native-token-transfers/",
"openzeppelin-contracts/=lib/native-token-transfers/evm/lib/openzeppelin-contracts/",
"protocol/=lib/protocol/",
"solidity-bytes-utils/=lib/native-token-transfers/evm/lib/solidity-bytes-utils/contracts/",
"ttg/=lib/ttg/",
"wormhole-solidity-sdk/=lib/native-token-transfers/evm/lib/wormhole-solidity-sdk/src/",
"wrapped-m-token/=lib/wrapped-m-token/"
],
"optimizer": {
"enabled": true,
"runs": 1500
},
"metadata": {
"useLiteralContent": false,
"bytecodeHash": "ipfs",
"appendCBOR": true
},
"outputSelection": {
"*": {
"*": [
"evm.bytecode",
"evm.deployedBytecode",
"devdoc",
"userdoc",
"metadata",
"abi"
]
}
},
"evmVersion": "cancun",
"viaIR": true,
"libraries": {
"lib/native-token-transfers/evm/src/libraries/TransceiverStructs.sol": {
"TransceiverStructs": "0x188B1E9E77B04E1699A78D929568Ed5BB15F962C"
}
}
}Contract Security Audit
- No Contract Security Audit Submitted- Submit Audit Here
Contract ABI
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HORIZATION_TYPEHASH","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"TRANSFER_WITH_AUTHORIZATION_TYPEHASH","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"},{"internalType":"address","name":"spender","type":"address"}],"name":"allowance","outputs":[{"internalType":"uint256","name":"allowance","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender_","type":"address"},{"internalType":"uint256","name":"amount_","type":"uint256"}],"name":"approve","outputs":[{"internalType":"bool","name":"success_","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"authorizer","type":"address"},{"internalType":"bytes32","name":"nonce","type":"bytes32"}],"name":"authorizationState","outputs":[{"internalType":"bool","name":"isNonceUsed","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"account_","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"balance_","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount_","type":"uint256"}],"name":"burn","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"authorizer_","type":"address"},{"internalType":"bytes32","name":"nonce_","type":"bytes32"},{"internalType":"bytes32","name":"r_","type":"bytes32"},{"internalType":"bytes32","name":"vs_","type":"bytes32"}],"name":"cancelAuthorization","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"authorizer_","type":"address"},{"internalType":"bytes32","name":"nonce_","type":"bytes32"},{"internalType":"uint8","name":"v_","type":"uint8"},{"internalType":"bytes32","name":"r_","type":"bytes32"},{"internalType":"bytes32","name":"s_","type":"bytes32"}],"name":"cancelAuthorization","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"authorizer_","type":"address"},{"internalType":"bytes32","name":"nonce_","type":"bytes32"},{"internalType":"bytes","name":"signature_","type":"bytes"}],"name":"cancelAuthorization","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"currentIndex","outputs":[{"internalType":"uint128","name":"index_","type":"uint128"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"decimals","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"eip712Domain","outputs":[{"internalType":"bytes1","name":"fields_","type":"bytes1"},{"internalType":"string","name":"name_","type":"string"},{"internalType":"string","name":"version_","type":"string"},{"internalType":"uint256","name":"chainId_","type":"uint256"},{"internalType":"address","name":"verifyingContract_","type":"address"},{"internalType":"bytes32","name":"salt_","type":"bytes32"},{"internalType":"uint256[]","name":"extensions_","type":"uint256[]"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"account_","type":"address"}],"name":"isEarning","outputs":[{"internalType":"bool","name":"isEarning_","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"latestIndex","outputs":[{"internalType":"uint128","name":"","type":"uint128"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"latestUpdateTimestamp","outputs":[{"internalType":"uint40","name":"","type":"uint40"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"account_","type":"address"},{"internalType":"uint256","name":"amount_","type":"uint256"}],"name":"mint","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"account_","type":"address"},{"internalType":"uint256","name":"amount_","type":"uint256"},{"internalType":"uint128","name":"index_","type":"uint128"}],"name":"mint","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"nonces","outputs":[{"internalType":"uint256","name":"nonce","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner_","type":"address"},{"internalType":"address","name":"spender_","type":"address"},{"internalType":"uint256","name":"value_","type":"uint256"},{"internalType":"uint256","name":"deadline_","type":"uint256"},{"internalType":"bytes","name":"signature_","type":"bytes"}],"name":"permit","outputs":[],"state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e":"bytes32","name":"vs_","type":"bytes32"}],"name":"transferWithAuthorization","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from_","type":"address"},{"internalType":"address","name":"to_","type":"address"},{"internalType":"uint256","name":"value_","type":"uint256"},{"internalType":"uint256","name":"validAfter_","type":"uint256"},{"internalType":"uint256","name":"validBefore_","type":"uint256"},{"internalType":"bytes32","name":"nonce_","type":"bytes32"},{"internalType":"bytes","name":"signature_","type":"bytes"}],"name":"transferWithAuthorization","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from_","type":"address"},{"internalType":"address","name":"to_","type":"address"},{"internalType":"uint256","name":"value_","type":"uint256"},{"internalType":"uint256","name":"validAfter_","type":"uint256"},{"internalType":"uint256","name":"validBefore_","type":"uint256"},{"internalType":"bytes32","name":"nonce_","type":"bytes32"},{"internalType":"uint8","name":"v_","type":"uint8"},{"internalType":"bytes32","name":"r_","type":"bytes32"},{"internalType":"bytes32","name":"s_","type":"bytes32"}],"name":"transferWithAuthorization","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint128","name":"index_","type":"uint128"}],"name":"updateIndex","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)
000000000000000000000000119fbeedd4f4f4298fb59b720d5654442b81ae2c
-----Decoded View---------------
Arg [0] : registrar_ (address): 0x119FbeeDD4F4f4298Fb59B720d5654442b81ae2c
-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 000000000000000000000000119fbeedd4f4f4298fb59b720d5654442b81ae2c
Net Worth in USD
Net Worth in ETH
Multichain Portfolio | 34 Chains
| Chain | Token | Portfolio % | Price | Amount | Value |
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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.