Contract
0x54b00658f247ee34e8b23055b19d73217a7d5420
2
Contract Overview
Balance:
0 ETH
EtherValue:
$0.00
My Name Tag:
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Txn Hash | Method |
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0xdb79eab9800757b17dadcab7596d1dc23c4a04380766cae42aa2812f40fc1a86 | 0x60806040 | 7225532 | 510 days 45 mins ago | 0x5b0390bccca1f040d8993eb6e4ce8ded93721765 | IN | Create: BDeployer | 0 ETH | 0.014107667169 |
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Contract Name:
BDeployer
Compiler Version
v0.5.16+commit.9c3226ce
Optimization Enabled:
Yes with 200 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
pragma solidity =0.5.16; import "./Borrowable.sol"; import "./interfaces/IBDeployer.sol"; /* * This contract is used by the Factory to deploy Borrowable(s) * The bytecode would be too long to fit in the Factory */ contract BDeployer is IBDeployer { constructor () public {} function deployBorrowable(address uniswapV2Pair, uint8 index) external returns (address borrowable) { bytes memory bytecode = type(Borrowable).creationCode; bytes32 salt = keccak256(abi.encodePacked(msg.sender, uniswapV2Pair, index)); assembly { borrowable := create2(0, add(bytecode, 32), mload(bytecode), salt) } } }
pragma solidity =0.5.16; import "./PoolToken.sol"; import "./BAllowance.sol"; import "./BInterestRateModel.sol"; import "./BSetter.sol"; import "./BStorage.sol"; import "./interfaces/IBorrowable.sol"; import "./interfaces/ICollateral.sol"; import "./interfaces/ITarotCallee.sol"; import "./interfaces/IERC20.sol"; import "./interfaces/IFactory.sol"; import "./interfaces/IBorrowTracker.sol"; import "./libraries/Math.sol"; contract Borrowable is IBorrowable, PoolToken, BStorage, BSetter, BInterestRateModel, BAllowance { uint256 public constant BORROW_FEE = 0.0001e18; //0.01% event Borrow( address indexed sender, address indexed borrower, address indexed receiver, uint256 borrowAmount, uint256 repayAmount, uint256 accountBorrowsPrior, uint256 accountBorrows, uint256 totalBorrows ); event Liquidate( address indexed sender, address indexed borrower, address indexed liquidator, uint256 seizeTokens, uint256 repayAmount, uint256 accountBorrowsPrior, uint256 accountBorrows, uint256 totalBorrows ); constructor() public {} /*** PoolToken ***/ function _update() internal { super._update(); _calculateBorrowRate(); } function _mintReserves(uint256 _exchangeRate, uint256 _totalSupply) internal returns (uint256) { uint256 _exchangeRateLast = exchangeRateLast; if (_exchangeRate > _exchangeRateLast) { uint256 _exchangeRateNew = _exchangeRate.sub( _exchangeRate.sub(_exchangeRateLast).mul(reserveFactor).div( 1e18 ) ); uint256 liquidity = _totalSupply.mul(_exchangeRate).div(_exchangeRateNew).sub( _totalSupply ); if (liquidity > 0) { address reservesManager = IFactory(factory).reservesManager(); _mint(reservesManager, liquidity); } exchangeRateLast = _exchangeRateNew; return _exchangeRateNew; } else return _exchangeRate; } function exchangeRate() public accrue returns (uint256) { uint256 _totalSupply = totalSupply; uint256 _actualBalance = totalBalance.add(totalBorrows); if (_totalSupply == 0 || _actualBalance == 0) return initialExchangeRate; uint256 _exchangeRate = _actualBalance.mul(1e18).div(_totalSupply); return _mintReserves(_exchangeRate, _totalSupply); } // force totalBalance to match real balance function sync() external nonReentrant update accrue {} /*** Borrowable ***/ // this is the stored borrow balance; the current borrow balance may be slightly higher function borrowBalance(address borrower) public view returns (uint256) { BorrowSnapshot memory borrowSnapshot = borrowBalances[borrower]; if (borrowSnapshot.interestIndex == 0) return 0; // not initialized return uint256(borrowSnapshot.principal).mul(borrowIndex).div( borrowSnapshot.interestIndex ); } function _trackBorrow( address borrower, uint256 accountBorrows, uint256 _borrowIndex ) internal { address _borrowTracker = borrowTracker; if (_borrowTracker == address(0)) return; IBorrowTracker(_borrowTracker).trackBorrow( borrower, accountBorrows, _borrowIndex ); } function _updateBorrow( address borrower, uint256 borrowAmount, uint256 repayAmount ) private returns ( uint256 accountBorrowsPrior, uint256 accountBorrows, uint256 _totalBorrows ) { accountBorrowsPrior = borrowBalance(borrower); if (borrowAmount == repayAmount) return (accountBorrowsPrior, accountBorrowsPrior, totalBorrows); uint112 _borrowIndex = borrowIndex; if (borrowAmount > repayAmount) { BorrowSnapshot storage borrowSnapshot = borrowBalances[borrower]; uint256 increaseAmount = borrowAmount - repayAmount; accountBorrows = accountBorrowsPrior.add(increaseAmount); borrowSnapshot.principal = safe112(accountBorrows); borrowSnapshot.interestIndex = _borrowIndex; _totalBorrows = uint256(totalBorrows).add(increaseAmount); totalBorrows = safe112(_totalBorrows); } else { BorrowSnapshot storage borrowSnapshot = borrowBalances[borrower]; uint256 decreaseAmount = repayAmount - borrowAmount; accountBorrows = accountBorrowsPrior > decreaseAmount ? accountBorrowsPrior - decreaseAmount : 0; borrowSnapshot.principal = safe112(accountBorrows); if (accountBorrows == 0) { borrowSnapshot.interestIndex = 0; } else { borrowSnapshot.interestIndex = _borrowIndex; } uint256 actualDecreaseAmount = accountBorrowsPrior.sub(accountBorrows); _totalBorrows = totalBorrows; // gas savings _totalBorrows = _totalBorrows > actualDecreaseAmount ? _totalBorrows - actualDecreaseAmount : 0; totalBorrows = safe112(_totalBorrows); } _trackBorrow(borrower, accountBorrows, _borrowIndex); } // this low-level function should be called from another contract function borrow( address borrower, address receiver, uint256 borrowAmount, bytes calldata data ) external nonReentrant update accrue { uint256 _totalBalance = totalBalance; require(borrowAmount <= _totalBalance, "Tarot: INSUFFICIENT_CASH"); _checkBorrowAllowance(borrower, msg.sender, borrowAmount); // optimistically transfer funds if (borrowAmount > 0) _safeTransfer(receiver, borrowAmount); if (data.length > 0) ITarotCallee(receiver).tarotBorrow( msg.sender, borrower, borrowAmount, data ); uint256 balance = IERC20(underlying).balanceOf(address(this)); uint256 borrowFee = borrowAmount.mul(BORROW_FEE).div(1e18); uint256 adjustedBorrowAmount = borrowAmount.add(borrowFee); uint256 repayAmount = balance.add(borrowAmount).sub(_totalBalance); ( uint256 accountBorrowsPrior, uint256 accountBorrows, uint256 _totalBorrows ) = _updateBorrow(borrower, adjustedBorrowAmount, repayAmount); if (adjustedBorrowAmount > repayAmount) require( ICollateral(collateral).canBorrow( borrower, address(this), accountBorrows ), "Tarot: INSUFFICIENT_LIQUIDITY" ); emit Borrow( msg.sender, borrower, receiver, borrowAmount, repayAmount, accountBorrowsPrior, accountBorrows, _totalBorrows ); } // this low-level function should be called from another contract function liquidate(address borrower, address liquidator) external nonReentrant update accrue returns (uint256 seizeTokens) { uint256 balance = IERC20(underlying).balanceOf(address(this)); uint256 repayAmount = balance.sub(totalBalance); uint256 actualRepayAmount = Math.min(borrowBalance(borrower), repayAmount); seizeTokens = ICollateral(collateral).seize( liquidator, borrower, actualRepayAmount ); ( uint256 accountBorrowsPrior, uint256 accountBorrows, uint256 _totalBorrows ) = _updateBorrow(borrower, 0, repayAmount); emit Liquidate( msg.sender, borrower, liquidator, seizeTokens, repayAmount, accountBorrowsPrior, accountBorrows, _totalBorrows ); } function trackBorrow(address borrower) external { _trackBorrow(borrower, borrowBalance(borrower), borrowIndex); } modifier accrue() { accrueInterest(); _; } }
pragma solidity >=0.5.0; interface IBDeployer { function deployBorrowable(address uniswapV2Pair, uint8 index) external returns (address borrowable); }
pragma solidity =0.5.16; import "./TarotERC20.sol"; import "./interfaces/IERC20.sol"; import "./interfaces/IPoolToken.sol"; import "./libraries/SafeMath.sol"; contract PoolToken is IPoolToken, TarotERC20 { uint256 internal constant initialExchangeRate = 1e18; address public underlying; address public factory; uint256 public totalBalance; uint256 public constant MINIMUM_LIQUIDITY = 1000; event Mint( address indexed sender, address indexed minter, uint256 mintAmount, uint256 mintTokens ); event Redeem( address indexed sender, address indexed redeemer, uint256 redeemAmount, uint256 redeemTokens ); event Sync(uint256 totalBalance); /*** Initialize ***/ // called once by the factory function _setFactory() external { require(factory == address(0), "Tarot: FACTORY_ALREADY_SET"); factory = msg.sender; } /*** PoolToken ***/ function _update() internal { totalBalance = IERC20(underlying).balanceOf(address(this)); emit Sync(totalBalance); } function exchangeRate() public returns (uint256) { uint256 _totalSupply = totalSupply; // gas savings uint256 _totalBalance = totalBalance; // gas savings if (_totalSupply == 0 || _totalBalance == 0) return initialExchangeRate; return _totalBalance.mul(1e18).div(_totalSupply); } // this low-level function should be called from another contract function mint(address minter) external nonReentrant update returns (uint256 mintTokens) { uint256 balance = IERC20(underlying).balanceOf(address(this)); uint256 mintAmount = balance.sub(totalBalance); mintTokens = mintAmount.mul(1e18).div(exchangeRate()); if (totalSupply == 0) { // permanently lock the first MINIMUM_LIQUIDITY tokens mintTokens = mintTokens.sub(MINIMUM_LIQUIDITY); _mint(address(0), MINIMUM_LIQUIDITY); } require(mintTokens > 0, "Tarot: MINT_AMOUNT_ZERO"); _mint(minter, mintTokens); emit Mint(msg.sender, minter, mintAmount, mintTokens); } // this low-level function should be called from another contract function redeem(address redeemer) external nonReentrant update returns (uint256 redeemAmount) { uint256 redeemTokens = balanceOf[address(this)]; redeemAmount = redeemTokens.mul(exchangeRate()).div(1e18); require(redeemAmount > 0, "Tarot: REDEEM_AMOUNT_ZERO"); require(redeemAmount <= totalBalance, "Tarot: INSUFFICIENT_CASH"); _burn(address(this), redeemTokens); _safeTransfer(redeemer, redeemAmount); emit Redeem(msg.sender, redeemer, redeemAmount, redeemTokens); } // force real balance to match totalBalance function skim(address to) external nonReentrant { _safeTransfer( to, IERC20(underlying).balanceOf(address(this)).sub(totalBalance) ); } // force totalBalance to match real balance function sync() external nonReentrant update {} /*** Utilities ***/ // same safe transfer function used by UniSwapV2 (with fixed underlying) bytes4 private constant SELECTOR = bytes4(keccak256(bytes("transfer(address,uint256)"))); function _safeTransfer(address to, uint256 amount) internal { (bool success, bytes memory data) = underlying.call(abi.encodeWithSelector(SELECTOR, to, amount)); require( success && (data.length == 0 || abi.decode(data, (bool))), "Tarot: TRANSFER_FAILED" ); } // prevents a contract from calling itself, directly or indirectly. bool internal _notEntered = true; modifier nonReentrant() { require(_notEntered, "Tarot: REENTERED"); _notEntered = false; _; _notEntered = true; } // update totalBalance with current balance modifier update() { _; _update(); } }
pragma solidity =0.5.16; import "./BStorage.sol"; import "./PoolToken.sol"; contract BAllowance is PoolToken, BStorage { event BorrowApproval( address indexed owner, address indexed spender, uint256 value ); function _borrowApprove( address owner, address spender, uint256 value ) private { borrowAllowance[owner][spender] = value; emit BorrowApproval(owner, spender, value); } function borrowApprove(address spender, uint256 value) external returns (bool) { _borrowApprove(msg.sender, spender, value); return true; } function _checkBorrowAllowance( address owner, address spender, uint256 value ) internal { uint256 _borrowAllowance = borrowAllowance[owner][spender]; if (spender != owner && _borrowAllowance != uint256(-1)) { require(_borrowAllowance >= value, "Tarot: BORROW_NOT_ALLOWED"); borrowAllowance[owner][spender] = _borrowAllowance - value; } } // keccak256("BorrowPermit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)"); bytes32 public constant BORROW_PERMIT_TYPEHASH = 0xf6d86ed606f871fa1a557ac0ba607adce07767acf53f492fb215a1a4db4aea6f; function borrowPermit( address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s ) external { _checkSignature( owner, spender, value, deadline, v, r, s, BORROW_PERMIT_TYPEHASH ); _borrowApprove(owner, spender, value); } }
pragma solidity =0.5.16; import "./BStorage.sol"; import "./PoolToken.sol"; contract BInterestRateModel is PoolToken, BStorage { // When utilization is 100% borrowRate is kinkBorrowRate * KINK_MULTIPLIER // kinkBorrowRate relative adjustment per second belongs to [1-adjustSpeed, 1+adjustSpeed*(KINK_MULTIPLIER-1)] uint public constant KINK_MULTIPLIER = 3; uint public constant KINK_BORROW_RATE_MAX = 281.582952e9; //888% per year uint public constant KINK_BORROW_RATE_MIN = 0.31709792e9; //1% per year event AccrueInterest(uint interestAccumulated, uint borrowIndex, uint totalBorrows); event CalculateKinkBorrowRate(uint kinkBorrowRate); event CalculateBorrowRate(uint borrowRate); function _calculateBorrowRate() internal { uint _kinkUtilizationRate = kinkUtilizationRate; uint _adjustSpeed = adjustSpeed; uint _borrowRate = borrowRate; uint _kinkBorrowRate = kinkBorrowRate; uint32 _rateUpdateTimestamp = rateUpdateTimestamp; // update kinkBorrowRate using previous borrowRate uint32 timeElapsed = getBlockTimestamp() - _rateUpdateTimestamp; // underflow is desired if(timeElapsed > 0) { rateUpdateTimestamp = getBlockTimestamp(); uint adjustFactor; if (_borrowRate < _kinkBorrowRate) { // never overflows, _kinkBorrowRate is never 0 uint tmp = (_kinkBorrowRate - _borrowRate) * 1e18 / _kinkBorrowRate * _adjustSpeed * timeElapsed / 1e18; adjustFactor = tmp > 1e18 ? 0 : 1e18 - tmp; } else { // never overflows, _kinkBorrowRate is never 0 uint tmp = (_borrowRate - _kinkBorrowRate) * 1e18 / _kinkBorrowRate * _adjustSpeed * timeElapsed / 1e18; adjustFactor = tmp + 1e18; } // never overflows _kinkBorrowRate = _kinkBorrowRate * adjustFactor / 1e18; if(_kinkBorrowRate > KINK_BORROW_RATE_MAX) _kinkBorrowRate = KINK_BORROW_RATE_MAX; if(_kinkBorrowRate < KINK_BORROW_RATE_MIN) _kinkBorrowRate = KINK_BORROW_RATE_MIN; kinkBorrowRate = uint48(_kinkBorrowRate); emit CalculateKinkBorrowRate(_kinkBorrowRate); } uint _utilizationRate; { // avoid stack to deep uint _totalBorrows = totalBorrows; // gas savings uint _actualBalance = totalBalance.add(_totalBorrows); _utilizationRate = (_actualBalance == 0) ? 0 : _totalBorrows * 1e18 / _actualBalance; } // update borrowRate using the new kinkBorrowRate if(_utilizationRate <= _kinkUtilizationRate) { // never overflows, _kinkUtilizationRate is never 0 _borrowRate = _kinkBorrowRate * _utilizationRate / _kinkUtilizationRate; } else { // never overflows, _kinkUtilizationRate is always < 1e18 uint overUtilization = (_utilizationRate - _kinkUtilizationRate) * 1e18 / (1e18 - _kinkUtilizationRate); // never overflows _borrowRate = ((KINK_MULTIPLIER - 1) * overUtilization + 1e18) * _kinkBorrowRate / 1e18; } borrowRate = uint48(_borrowRate); emit CalculateBorrowRate(_borrowRate); } // applies accrued interest to total borrows and reserves function accrueInterest() public { uint _borrowIndex = borrowIndex; uint _totalBorrows = totalBorrows; uint32 _accrualTimestamp = accrualTimestamp; uint32 blockTimestamp = getBlockTimestamp(); if (_accrualTimestamp == blockTimestamp) return; uint32 timeElapsed = blockTimestamp - _accrualTimestamp; // underflow is desired accrualTimestamp = blockTimestamp; uint interestFactor = uint(borrowRate).mul(timeElapsed); uint interestAccumulated = interestFactor.mul(_totalBorrows).div(1e18); _totalBorrows = _totalBorrows.add( interestAccumulated ); _borrowIndex = _borrowIndex.add( interestFactor.mul(_borrowIndex).div(1e18) ); borrowIndex = safe112(_borrowIndex); totalBorrows = safe112(_totalBorrows); emit AccrueInterest(interestAccumulated, _borrowIndex, _totalBorrows); } function getBlockTimestamp() public view returns (uint32) { return uint32(block.timestamp % 2**32); } }
pragma solidity =0.5.16; import "./BStorage.sol"; import "./PoolToken.sol"; import "./interfaces/IFactory.sol"; contract BSetter is PoolToken, BStorage { uint256 public constant RESERVE_FACTOR_MAX = 0.20e18; //20% uint256 public constant KINK_UR_MIN = 0.50e18; //50% uint256 public constant KINK_UR_MAX = 0.99e18; //99% uint256 public constant ADJUST_SPEED_MIN = 0.05787037e12; //0.5% per day uint256 public constant ADJUST_SPEED_MAX = 115.74074e12; //1000% per day event NewReserveFactor(uint256 newReserveFactor); event NewKinkUtilizationRate(uint256 newKinkUtilizationRate); event NewAdjustSpeed(uint256 newAdjustSpeed); event NewBorrowTracker(address newBorrowTracker); // called once by the factory at time of deployment function _initialize( string calldata _name, string calldata _symbol, address _underlying, address _collateral ) external { require(msg.sender == factory, "Tarot: UNAUTHORIZED"); // sufficient check _setName(_name, _symbol); underlying = _underlying; collateral = _collateral; exchangeRateLast = initialExchangeRate; } function _setReserveFactor(uint256 newReserveFactor) external nonReentrant { _checkSetting(newReserveFactor, 0, RESERVE_FACTOR_MAX); reserveFactor = newReserveFactor; emit NewReserveFactor(newReserveFactor); } function _setKinkUtilizationRate(uint256 newKinkUtilizationRate) external nonReentrant { _checkSetting(newKinkUtilizationRate, KINK_UR_MIN, KINK_UR_MAX); kinkUtilizationRate = newKinkUtilizationRate; emit NewKinkUtilizationRate(newKinkUtilizationRate); } function _setAdjustSpeed(uint256 newAdjustSpeed) external nonReentrant { _checkSetting(newAdjustSpeed, ADJUST_SPEED_MIN, ADJUST_SPEED_MAX); adjustSpeed = newAdjustSpeed; emit NewAdjustSpeed(newAdjustSpeed); } function _setBorrowTracker(address newBorrowTracker) external nonReentrant { _checkAdmin(); borrowTracker = newBorrowTracker; emit NewBorrowTracker(newBorrowTracker); } function _checkSetting( uint256 parameter, uint256 min, uint256 max ) internal view { _checkAdmin(); require(parameter >= min, "Tarot: INVALID_SETTING"); require(parameter <= max, "Tarot: INVALID_SETTING"); } function _checkAdmin() internal view { require(msg.sender == IFactory(factory).admin(), "Tarot: UNAUTHORIZED"); } }
pragma solidity =0.5.16; contract BStorage { address public collateral; mapping(address => mapping(address => uint256)) public borrowAllowance; struct BorrowSnapshot { uint112 principal; // amount in underlying when the borrow was last updated uint112 interestIndex; // borrow index when borrow was last updated } mapping(address => BorrowSnapshot) internal borrowBalances; // use one memory slot uint112 public borrowIndex = 1e18; uint112 public totalBorrows; uint32 public accrualTimestamp = uint32(block.timestamp % 2**32); uint256 public exchangeRateLast; // use one memory slot uint48 public borrowRate; uint48 public kinkBorrowRate = 6.3419584e9; //20% per year uint32 public rateUpdateTimestamp = uint32(block.timestamp % 2**32); uint256 public reserveFactor = 0.10e18; //10% uint256 public kinkUtilizationRate = 0.75e18; //75% uint256 public adjustSpeed = 50e12; //432% per day address public borrowTracker; function safe112(uint256 n) internal pure returns (uint112) { require(n < 2**112, "Tarot: SAFE112"); return uint112(n); } }
pragma solidity >=0.5.0; interface IBorrowable { /*** Tarot ERC20 ***/ event Transfer(address indexed from, address indexed to, uint256 value); event Approval( address indexed owner, address indexed spender, uint256 value ); function name() external pure returns (string memory); function symbol() external pure returns (string memory); function decimals() external pure returns (uint8); function totalSupply() external view returns (uint256); function balanceOf(address owner) external view returns (uint256); function allowance(address owner, address spender) external view returns (uint256); function approve(address spender, uint256 value) external returns (bool); function transfer(address to, uint256 value) external returns (bool); function transferFrom( address from, address to, uint256 value ) external returns (bool); function DOMAIN_SEPARATOR() external view returns (bytes32); function PERMIT_TYPEHASH() external pure returns (bytes32); function nonces(address owner) external view returns (uint256); function permit( address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s ) external; /*** Pool Token ***/ event Mint( address indexed sender, address indexed minter, uint256 mintAmount, uint256 mintTokens ); event Redeem( address indexed sender, address indexed redeemer, uint256 redeemAmount, uint256 redeemTokens ); event Sync(uint256 totalBalance); function underlying() external view returns (address); function factory() external view returns (address); function totalBalance() external view returns (uint256); function MINIMUM_LIQUIDITY() external pure returns (uint256); function exchangeRate() external returns (uint256); function mint(address minter) external returns (uint256 mintTokens); function redeem(address redeemer) external returns (uint256 redeemAmount); function skim(address to) external; function sync() external; function _setFactory() external; /*** Borrowable ***/ event BorrowApproval( address indexed owner, address indexed spender, uint256 value ); event Borrow( address indexed sender, address indexed borrower, address indexed receiver, uint256 borrowAmount, uint256 repayAmount, uint256 accountBorrowsPrior, uint256 accountBorrows, uint256 totalBorrows ); event Liquidate( address indexed sender, address indexed borrower, address indexed liquidator, uint256 seizeTokens, uint256 repayAmount, uint256 accountBorrowsPrior, uint256 accountBorrows, uint256 totalBorrows ); function BORROW_FEE() external pure returns (uint256); function collateral() external view returns (address); function reserveFactor() external view returns (uint256); function exchangeRateLast() external view returns (uint256); function borrowIndex() external view returns (uint256); function totalBorrows() external view returns (uint256); function borrowAllowance(address owner, address spender) external view returns (uint256); function borrowBalance(address borrower) external view returns (uint256); function borrowTracker() external view returns (address); function BORROW_PERMIT_TYPEHASH() external pure returns (bytes32); function borrowApprove(address spender, uint256 value) external returns (bool); function borrowPermit( address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s ) external; function borrow( address borrower, address receiver, uint256 borrowAmount, bytes calldata data ) external; function liquidate(address borrower, address liquidator) external returns (uint256 seizeTokens); function trackBorrow(address borrower) external; /*** Borrowable Interest Rate Model ***/ event AccrueInterest( uint256 interestAccumulated, uint256 borrowIndex, uint256 totalBorrows ); event CalculateKink(uint256 kinkRate); event CalculateBorrowRate(uint256 borrowRate); function KINK_BORROW_RATE_MAX() external pure returns (uint256); function KINK_BORROW_RATE_MIN() external pure returns (uint256); function KINK_MULTIPLIER() external pure returns (uint256); function borrowRate() external view returns (uint256); function kinkBorrowRate() external view returns (uint256); function kinkUtilizationRate() external view returns (uint256); function adjustSpeed() external view returns (uint256); function rateUpdateTimestamp() external view returns (uint32); function accrualTimestamp() external view returns (uint32); function accrueInterest() external; /*** Borrowable Setter ***/ event NewReserveFactor(uint256 newReserveFactor); event NewKinkUtilizationRate(uint256 newKinkUtilizationRate); event NewAdjustSpeed(uint256 newAdjustSpeed); event NewBorrowTracker(address newBorrowTracker); function RESERVE_FACTOR_MAX() external pure returns (uint256); function KINK_UR_MIN() external pure returns (uint256); function KINK_UR_MAX() external pure returns (uint256); function ADJUST_SPEED_MIN() external pure returns (uint256); function ADJUST_SPEED_MAX() external pure returns (uint256); function _initialize( string calldata _name, string calldata _symbol, address _underlying, address _collateral ) external; function _setReserveFactor(uint256 newReserveFactor) external; function _setKinkUtilizationRate(uint256 newKinkUtilizationRate) external; function _setAdjustSpeed(uint256 newAdjustSpeed) external; function _setBorrowTracker(address newBorrowTracker) external; }
pragma solidity >=0.5.0; interface ICollateral { /*** Tarot ERC20 ***/ event Transfer(address indexed from, address indexed to, uint256 value); event Approval( address indexed owner, address indexed spender, uint256 value ); function name() external pure returns (string memory); function symbol() external pure returns (string memory); function decimals() external pure returns (uint8); function totalSupply() external view returns (uint256); function balanceOf(address owner) external view returns (uint256); function allowance(address owner, address spender) external view returns (uint256); function approve(address spender, uint256 value) external returns (bool); function transfer(address to, uint256 value) external returns (bool); function transferFrom( address from, address to, uint256 value ) external returns (bool); function DOMAIN_SEPARATOR() external view returns (bytes32); function PERMIT_TYPEHASH() external pure returns (bytes32); function nonces(address owner) external view returns (uint256); function permit( address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s ) external; /*** Pool Token ***/ event Mint( address indexed sender, address indexed minter, uint256 mintAmount, uint256 mintTokens ); event Redeem( address indexed sender, address indexed redeemer, uint256 redeemAmount, uint256 redeemTokens ); event Sync(uint256 totalBalance); function underlying() external view returns (address); function factory() external view returns (address); function totalBalance() external view returns (uint256); function MINIMUM_LIQUIDITY() external pure returns (uint256); function exchangeRate() external returns (uint256); function mint(address minter) external returns (uint256 mintTokens); function redeem(address redeemer) external returns (uint256 redeemAmount); function skim(address to) external; function sync() external; function _setFactory() external; /*** Collateral ***/ function borrowable0() external view returns (address); function borrowable1() external view returns (address); function tarotPriceOracle() external view returns (address); function safetyMarginSqrt() external view returns (uint256); function liquidationIncentive() external view returns (uint256); function getPrices() external returns (uint256 price0, uint256 price1); function tokensUnlocked(address from, uint256 value) external returns (bool); function accountLiquidityAmounts( address account, uint256 amount0, uint256 amount1 ) external returns (uint256 liquidity, uint256 shortfall); function accountLiquidity(address account) external returns (uint256 liquidity, uint256 shortfall); function canBorrow( address account, address borrowable, uint256 accountBorrows ) external returns (bool); function seize( address liquidator, address borrower, uint256 repayAmount ) external returns (uint256 seizeTokens); function flashRedeem( address redeemer, uint256 redeemAmount, bytes calldata data ) external; /*** Collateral Setter ***/ event NewSafetyMargin(uint256 newSafetyMarginSqrt); event NewLiquidationIncentive(uint256 newLiquidationIncentive); function SAFETY_MARGIN_SQRT_MIN() external pure returns (uint256); function SAFETY_MARGIN_SQRT_MAX() external pure returns (uint256); function LIQUIDATION_INCENTIVE_MIN() external pure returns (uint256); function LIQUIDATION_INCENTIVE_MAX() external pure returns (uint256); function _initialize( string calldata _name, string calldata _symbol, address _underlying, address _borrowable0, address _borrowable1 ) external; function _setSafetyMarginSqrt(uint256 newSafetyMarginSqrt) external; function _setLiquidationIncentive(uint256 newLiquidationIncentive) external; }
pragma solidity >=0.5.0; interface ITarotCallee { function tarotBorrow( address sender, address borrower, uint256 borrowAmount, bytes calldata data ) external; function tarotRedeem( address sender, uint256 redeemAmount, bytes calldata data ) external; }
pragma solidity >=0.5.0; interface IERC20 { event Approval(address indexed owner, address indexed spender, uint value); event Transfer(address indexed from, address indexed to, uint value); function name() external view returns (string memory); function symbol() external view returns (string memory); function decimals() external view returns (uint8); function totalSupply() external view returns (uint); function balanceOf(address owner) external view returns (uint); function allowance(address owner, address spender) external view returns (uint); function approve(address spender, uint value) external returns (bool); function transfer(address to, uint value) external returns (bool); function transferFrom(address from, address to, uint value) external returns (bool); }
pragma solidity >=0.5.0; interface IFactory { event LendingPoolInitialized(address indexed uniswapV2Pair, address indexed token0, address indexed token1, address collateral, address borrowable0, address borrowable1, uint lendingPoolId); event NewPendingAdmin(address oldPendingAdmin, address newPendingAdmin); event NewAdmin(address oldAdmin, address newAdmin); event NewReservesPendingAdmin(address oldReservesPendingAdmin, address newReservesPendingAdmin); event NewReservesAdmin(address oldReservesAdmin, address newReservesAdmin); event NewReservesManager(address oldReservesManager, address newReservesManager); function admin() external view returns (address); function pendingAdmin() external view returns (address); function reservesAdmin() external view returns (address); function reservesPendingAdmin() external view returns (address); function reservesManager() external view returns (address); function getLendingPool(address uniswapV2Pair) external view returns ( bool initialized, uint24 lendingPoolId, address collateral, address borrowable0, address borrowable1 ); function allLendingPools(uint) external view returns (address uniswapV2Pair); function allLendingPoolsLength() external view returns (uint); function bDeployer() external view returns (address); function cDeployer() external view returns (address); function tarotPriceOracle() external view returns (address); function createCollateral(address uniswapV2Pair) external returns (address collateral); function createBorrowable0(address uniswapV2Pair) external returns (address borrowable0); function createBorrowable1(address uniswapV2Pair) external returns (address borrowable1); function initializeLendingPool(address uniswapV2Pair) external; function _setPendingAdmin(address newPendingAdmin) external; function _acceptAdmin() external; function _setReservesPendingAdmin(address newPendingAdmin) external; function _acceptReservesAdmin() external; function _setReservesManager(address newReservesManager) external; }
pragma solidity >=0.5.0; interface IBorrowTracker { function trackBorrow(address borrower, uint borrowBalance, uint borrowIndex) external; }
pragma solidity =0.5.16; // a library for performing various math operations // forked from: https://github.com/Uniswap/uniswap-v2-core/blob/master/contracts/libraries/Math.sol library Math { function min(uint x, uint y) internal pure returns (uint z) { z = x < y ? x : y; } // babylonian method (https://en.wikipedia.org/wiki/Methods_of_computing_square_roots#Babylonian_method) function sqrt(uint y) internal pure returns (uint z) { if (y > 3) { z = y; uint x = y / 2 + 1; while (x < z) { z = x; x = (y / x + x) / 2; } } else if (y != 0) { z = 1; } } }
pragma solidity =0.5.16; import "./libraries/SafeMath.sol"; // This contract is basically UniswapV2ERC20 with small modifications // src: https://github.com/Uniswap/uniswap-v2-core/blob/master/contracts/UniswapV2ERC20.sol contract TarotERC20 { using SafeMath for uint256; string public name; string public symbol; uint8 public decimals = 18; uint256 public totalSupply; mapping(address => uint256) public balanceOf; mapping(address => mapping(address => uint256)) public allowance; bytes32 public DOMAIN_SEPARATOR; mapping(address => uint256) public nonces; event Transfer(address indexed from, address indexed to, uint256 value); event Approval( address indexed owner, address indexed spender, uint256 value ); constructor() public {} function _setName(string memory _name, string memory _symbol) internal { name = _name; symbol = _symbol; uint256 chainId; assembly { chainId := chainid } DOMAIN_SEPARATOR = keccak256( abi.encode( keccak256( "EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)" ), keccak256(bytes(_name)), keccak256(bytes("1")), chainId, address(this) ) ); } function _mint(address to, uint256 value) internal { totalSupply = totalSupply.add(value); balanceOf[to] = balanceOf[to].add(value); emit Transfer(address(0), to, value); } function _burn(address from, uint256 value) internal { balanceOf[from] = balanceOf[from].sub(value); totalSupply = totalSupply.sub(value); emit Transfer(from, address(0), value); } function _approve( address owner, address spender, uint256 value ) private { allowance[owner][spender] = value; emit Approval(owner, spender, value); } function _transfer( address from, address to, uint256 value ) internal { balanceOf[from] = balanceOf[from].sub( value, "Tarot: TRANSFER_TOO_HIGH" ); balanceOf[to] = balanceOf[to].add(value); emit Transfer(from, to, value); } function approve(address spender, uint256 value) external returns (bool) { _approve(msg.sender, spender, value); return true; } function transfer(address to, uint256 value) external returns (bool) { _transfer(msg.sender, to, value); return true; } function transferFrom( address from, address to, uint256 value ) external returns (bool) { if (allowance[from][msg.sender] != uint256(-1)) { allowance[from][msg.sender] = allowance[from][msg.sender].sub( value, "Tarot: TRANSFER_NOT_ALLOWED" ); } _transfer(from, to, value); return true; } function _checkSignature( address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s, bytes32 typehash ) internal { require(deadline >= block.timestamp, "Tarot: EXPIRED"); bytes32 digest = keccak256( abi.encodePacked( "\x19\x01", DOMAIN_SEPARATOR, keccak256( abi.encode( typehash, owner, spender, value, nonces[owner]++, deadline ) ) ) ); address recoveredAddress = ecrecover(digest, v, r, s); require( recoveredAddress != address(0) && recoveredAddress == owner, "Tarot: INVALID_SIGNATURE" ); } // keccak256("Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)"); bytes32 public constant PERMIT_TYPEHASH = 0x6e71edae12b1b97f4d1f60370fef10105fa2faae0126114a169c64845d6126c9; function permit( address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s ) external { _checkSignature( owner, spender, value, deadline, v, r, s, PERMIT_TYPEHASH ); _approve(owner, spender, value); } }
pragma solidity >=0.5.0; interface IPoolToken { /*** Tarot ERC20 ***/ event Transfer(address indexed from, address indexed to, uint256 value); event Approval( address indexed owner, address indexed spender, uint256 value ); function name() external pure returns (string memory); function symbol() external pure returns (string memory); function decimals() external pure returns (uint8); function totalSupply() external view returns (uint256); function balanceOf(address owner) external view returns (uint256); function allowance(address owner, address spender) external view returns (uint256); function approve(address spender, uint256 value) external returns (bool); function transfer(address to, uint256 value) external returns (bool); function transferFrom( address from, address to, uint256 value ) external returns (bool); function DOMAIN_SEPARATOR() external view returns (bytes32); function PERMIT_TYPEHASH() external pure returns (bytes32); function nonces(address owner) external view returns (uint256); function permit( address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s ) external; /*** Pool Token ***/ event Mint( address indexed sender, address indexed minter, uint256 mintAmount, uint256 mintTokens ); event Redeem( address indexed sender, address indexed redeemer, uint256 redeemAmount, uint256 redeemTokens ); event Sync(uint256 totalBalance); function underlying() external view returns (address); function factory() external view returns (address); function totalBalance() external view returns (uint256); function MINIMUM_LIQUIDITY() external pure returns (uint256); function exchangeRate() external returns (uint256); function mint(address minter) external returns (uint256 mintTokens); function redeem(address redeemer) external returns (uint256 redeemAmount); function skim(address to) external; function sync() external; function _setFactory() external; }
pragma solidity =0.5.16; // From https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/math/Math.sol // Subject to the MIT license. /** * @dev Wrappers over Solidity's arithmetic operations with added overflow * checks. * * Arithmetic operations in Solidity wrap on overflow. This can easily result * in bugs, because programmers usually assume that an overflow raises an * error, which is the standard behavior in high level programming languages. * `SafeMath` restores this intuition by reverting the transaction when an * operation overflows. * * Using this library instead of the unchecked operations eliminates an entire * class of bugs, so it's recommended to use it always. */ library SafeMath { /** * @dev Returns the addition of two unsigned integers, reverting on overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * - Addition cannot overflow. */ function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } /** * @dev Returns the addition of two unsigned integers, reverting with custom message on overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * - Addition cannot overflow. */ function add(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, errorMessage); return c; } /** * @dev Returns the subtraction of two unsigned integers, reverting on underflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * - Subtraction cannot underflow. */ function sub(uint256 a, uint256 b) internal pure returns (uint256) { return sub(a, b, "SafeMath: subtraction underflow"); } /** * @dev Returns the subtraction of two unsigned integers, reverting with custom message on underflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * - Subtraction cannot underflow. */ function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b <= a, errorMessage); uint256 c = a - b; return c; } /** * @dev Returns the multiplication of two unsigned integers, reverting on overflow. * * Counterpart to Solidity's `*` operator. * * Requirements: * - Multiplication cannot overflow. */ function mul(uint256 a, uint256 b) internal pure returns (uint256) { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) { return 0; } uint256 c = a * b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } /** * @dev Returns the multiplication of two unsigned integers, reverting on overflow. * * Counterpart to Solidity's `*` operator. * * Requirements: * - Multiplication cannot overflow. */ function mul(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) { return 0; } uint256 c = a * b; require(c / a == b, errorMessage); return c; } /** * @dev Returns the integer division of two unsigned integers. * Reverts on division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * - The divisor cannot be zero. */ function div(uint256 a, uint256 b) internal pure returns (uint256) { return div(a, b, "SafeMath: division by zero"); } /** * @dev Returns the integer division of two unsigned integers. * Reverts with custom message on division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * - The divisor cannot be zero. */ function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { // Solidity only automatically asserts when dividing by 0 require(b > 0, errorMessage); uint256 c = a / b; // assert(a == b * c + a % b); // There is no case in which this doesn't hold return c; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b) internal pure returns (uint256) { return mod(a, b, "SafeMath: modulo by zero"); } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts with custom message when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b != 0, errorMessage); return a % b; } }
{ "optimizer": { "enabled": true, "runs": 200 }, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } }, "libraries": {} }
Contract Security Audit
- No Contract Security Audit Submitted- Submit Audit Here
[{"inputs":[],"payable":false,"stateMutability":"nonpayable","type":"constructor"},{"constant":false,"inputs":[{"internalType":"address","name":"uniswapV2Pair","type":"address"},{"internalType":"uint8","name":"index","type":"uint8"}],"name":"deployBorrowable","outputs":[{"internalType":"address","name":"borrowable","type":"address"}],"payable":false,"stateMutability":"nonpayable","type":"function"}]
Contract Creation Code
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