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ERC-20
Overview
Max Total Supply
5.516258770592363223 srarcWETH
Holders
51
Market
Onchain Market Cap
$0.00
Circulating Supply Market Cap
-
Other Info
Token Contract (WITH 18 Decimals)
Balance
0.000000000747028985 srarcWETHValue
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# | Exchange | Pair | Price | 24H Volume | % Volume |
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Contract Name:
Tranche
Compiler Version
v0.8.17+commit.8df45f5f
Optimization Enabled:
Yes with 200 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
/** * Created by Pragma Labs * SPDX-License-Identifier: BUSL-1.1 */ pragma solidity ^0.8.13; import { Owned } from "../lib/solmate/src/auth/Owned.sol"; import { ERC4626 } from "../lib/solmate/src/mixins/ERC4626.sol"; import { ILendingPool } from "./interfaces/ILendingPool.sol"; import { FixedPointMathLib } from "../lib/solmate/src/utils/FixedPointMathLib.sol"; import { ITranche } from "./interfaces/ITranche.sol"; import { IGuardian } from "./interfaces/IGuardian.sol"; /** * @title Tranche * @author Pragma Labs * @notice The Tranche contract allows for lending of a specified ERC20 token, managed by a lending pool. * @dev Protocol is according the ERC4626 standard, with a certain ERC20 as underlying * @dev Implementation not vulnerable to ERC4626 inflation attacks, * since totalAssets() cannot be manipulated by first minter when total amount of shares are low. * For more information, see https://github.com/OpenZeppelin/openzeppelin-contracts/issues/3706 */ contract Tranche is ITranche, ERC4626, Owned { using FixedPointMathLib for uint256; ILendingPool public immutable lendingPool; /* ////////////////////////////////////////////////////////////// STORAGE ////////////////////////////////////////////////////////////// */ // Flag indicating if the Tranche is locked or not. bool public locked; // Flag indicating if there are ongoing auctions or not. bool public auctionInProgress; /* ////////////////////////////////////////////////////////////// EVENTS ////////////////////////////////////////////////////////////// */ event LockSet(bool status); event AuctionFlagSet(bool status); /* ////////////////////////////////////////////////////////////// MODIFIERS ////////////////////////////////////////////////////////////// */ modifier notLocked() { require(!locked, "TRANCHE: LOCKED"); _; } /** * @dev Certain actions (depositing and withdrawing) can be halted on the most junior tranche while auctions are in progress. * This prevents frontrunning both in the case there is bad debt (by pulling out the tranche before the bad debt is settled), * as in the case there are big payouts to the LPs (mitigate Just In Time attacks, where MEV bots front-run the payout of * Liquidation penalties to the most junior tranche and withdraw immediately after). */ modifier notDuringAuction() { require(!auctionInProgress, "TRANCHE: AUCTION IN PROGRESS"); _; } /* ////////////////////////////////////////////////////////////// CONSTRUCTOR ////////////////////////////////////////////////////////////// */ /** * @notice The constructor for a tranche. * @param lendingPool_ the Lending Pool of the underlying ERC-20 token, with the lending logic. * @param prefix_ The prefix of the contract name (eg. Senior -> Mezzanine -> Junior). * @param prefixSymbol_ The prefix of the contract symbol (eg. SR -> MZ -> JR). * @dev The name and symbol of the tranche are automatically generated, based on the name and symbol of the underlying token. */ constructor(address lendingPool_, string memory prefix_, string memory prefixSymbol_) ERC4626( ERC4626(address(lendingPool_)).asset(), string(abi.encodePacked(prefix_, " Arcadia ", ERC4626(lendingPool_).asset().name())), string(abi.encodePacked(prefixSymbol_, "arc", ERC4626(lendingPool_).asset().symbol())) ) Owned(msg.sender) { lendingPool = ILendingPool(lendingPool_); } /*////////////////////////////////////////////////////////////// LOCKING LOGIC //////////////////////////////////////////////////////////////*/ /** * @notice Locks the tranche in case all liquidity of the tranche is written off due to bad debt. * @dev Only the Lending Pool can call this function, only trigger is a severe default event. */ function lock() external { require(msg.sender == address(lendingPool), "T_L: UNAUTHORIZED"); locked = true; auctionInProgress = false; emit LockSet(true); emit AuctionFlagSet(false); } /** * @notice Unlocks the tranche. * @dev Only the Owner can call this function, since tranches are locked due to complete defaults, * This function will only be called to partially refund existing share-holders after a default. */ function unLock() external onlyOwner { locked = false; emit LockSet(false); } /** * @notice Locks the tranche when an auction is in progress. * @param auctionInProgress_ Flag indicating if there are auctions in progress. * @dev Only the Lending Pool can call this function. * This function is to make sure no JIT liquidity is provided during a positive auction, * and that no liquidity can be withdrawn during a negative auction. */ function setAuctionInProgress(bool auctionInProgress_) external { require(msg.sender == address(lendingPool), "T_SAIP: UNAUTHORIZED"); auctionInProgress = auctionInProgress_; emit AuctionFlagSet(auctionInProgress_); } /*////////////////////////////////////////////////////////////// DEPOSIT/WITHDRAWAL LOGIC //////////////////////////////////////////////////////////////*/ /** * @notice Modification of the standard ERC-4626 deposit implementation. * @param assets The amount of assets of the underlying ERC-20 token being deposited. * @param receiver The address that receives the minted shares. * @return shares The amount of shares minted. * @dev This contract does not directly transfer the underlying assets from the sender to the receiver. * Instead it calls the deposit of the Lending Pool which calls the transferFrom of the underlying assets. * Hence the sender should not give this contract an allowance to transfer the underlying asset but the Lending Pool. */ function deposit(uint256 assets, address receiver) public override notLocked notDuringAuction returns (uint256 shares) { // Check for rounding error since we round down in previewDeposit. require((shares = previewDepositAndSync(assets)) != 0, "T_D: ZERO_SHARES"); // Need to transfer (via lendingPool.depositInLendingPool()) before minting or ERC777s could reenter. lendingPool.depositInLendingPool(assets, msg.sender); _mint(receiver, shares); emit Deposit(msg.sender, receiver, assets, shares); } /** * @notice Modification of the standard ERC-4626 mint implementation. * @param shares The amount of shares minted. * @param receiver The address that receives the minted shares. * @return assets The corresponding amount of assets of the underlying ERC-20 token being deposited. * @dev This contract does not directly transfers the underlying assets from the sender to the receiver. * Instead it calls the deposit of the Lending Pool which calls the transferFrom of the underlying assets. * Hence the sender should not give this contract an allowance to transfer the underlying asset but the Lending Pool. */ function mint(uint256 shares, address receiver) public override notLocked notDuringAuction returns (uint256 assets) { assets = previewMintAndSync(shares); // No need to check for rounding error, previewMint rounds up. // Need to transfer (via lendingPool.depositInLendingPool()) before minting or ERC777s could reenter. lendingPool.depositInLendingPool(assets, msg.sender); _mint(receiver, shares); emit Deposit(msg.sender, receiver, assets, shares); } /** * @notice Modification of the standard ERC-4626 withdraw implementation. * @param assets The amount of assets of the underlying ERC-20 token being withdrawn. * @param receiver The address of the receiver of the underlying ERC-20 tokens. * @param owner_ The address of the owner of the assets being withdrawn. * @return shares The corresponding amount of shares redeemed. */ function withdraw(uint256 assets, address receiver, address owner_) public override notLocked notDuringAuction returns (uint256 shares) { shares = previewWithdrawAndSync(assets); // No need to check for rounding error, previewWithdraw rounds up. if (msg.sender != owner_) { uint256 allowed = allowance[owner_][msg.sender]; // Saves gas for limited approvals. if (allowed != type(uint256).max) { allowance[owner_][msg.sender] = allowed - shares; } } _burn(owner_, shares); emit Withdraw(msg.sender, receiver, owner_, assets, shares); lendingPool.withdrawFromLendingPool(assets, receiver); } /** * @notice Modification of the standard ERC-4626 redeem implementation. * @param shares the amount of shares being redeemed. * @param receiver The address of the receiver of the underlying ERC-20 tokens. * @param owner_ The address of the owner of the shares being redeemed. * @return assets The corresponding amount of assets withdrawn. */ function redeem(uint256 shares, address receiver, address owner_) public override notLocked notDuringAuction returns (uint256 assets) { if (msg.sender != owner_) { uint256 allowed = allowance[owner_][msg.sender]; // Saves gas for limited approvals. if (allowed != type(uint256).max) { allowance[owner_][msg.sender] = allowed - shares; } } // Check for rounding error since we round down in previewRedeem. require((assets = previewRedeemAndSync(shares)) != 0, "T_R: ZERO_ASSETS"); _burn(owner_, shares); emit Withdraw(msg.sender, receiver, owner_, assets, shares); lendingPool.withdrawFromLendingPool(assets, receiver); } /*////////////////////////////////////////////////////////////// ACCOUNTING LOGIC //////////////////////////////////////////////////////////////*/ /** * @notice Returns the total amount of underlying assets, to which liquidity providers have a claim. * @return assets The total amount of underlying assets, to which liquidity providers have a claim. * @dev The Liquidity Pool does the accounting of the outstanding claim on liquidity per tranche. */ function totalAssets() public view override returns (uint256 assets) { assets = lendingPool.liquidityOf(address(this)); } /** * @dev Modification of totalAssets() where interests are realised (state modification). */ function totalAssetsAndSync() public returns (uint256 assets) { assets = lendingPool.liquidityOfAndSync(address(this)); } /** * @dev Modification of convertToShares() where interests are realised (state modification). */ function convertToSharesAndSync(uint256 assets) public returns (uint256) { uint256 supply = totalSupply; // Saves an extra SLOAD if totalSupply is non-zero. return supply == 0 ? assets : assets.mulDivDown(supply, totalAssetsAndSync()); } /** * @dev Modification of convertToAssets() where interests are realised (state modification). */ function convertToAssetsAndSync(uint256 shares) public returns (uint256) { uint256 supply = totalSupply; // Saves an extra SLOAD if totalSupply is non-zero. return supply == 0 ? shares : shares.mulDivDown(totalAssetsAndSync(), supply); } /** * @dev Modification of previewDeposit() where interests are realised (state modification). */ function previewDepositAndSync(uint256 assets) public returns (uint256) { return convertToSharesAndSync(assets); } /** * @dev Modification of previewMint() where interests are realised (state modification). */ function previewMintAndSync(uint256 shares) public returns (uint256) { uint256 supply = totalSupply; // Saves an extra SLOAD if totalSupply is non-zero. return supply == 0 ? shares : shares.mulDivUp(totalAssetsAndSync(), supply); } /** * @dev Modification of previewWithdraw() where interests are realised (state modification). */ function previewWithdrawAndSync(uint256 assets) public returns (uint256) { uint256 supply = totalSupply; // Saves an extra SLOAD if totalSupply is non-zero. return supply == 0 ? assets : assets.mulDivUp(supply, totalAssetsAndSync()); } /** * @dev Modification of previewRedeem() where interests are realised (state modification). */ function previewRedeemAndSync(uint256 shares) public returns (uint256) { return convertToAssetsAndSync(shares); } /*////////////////////////////////////////////////////////////// DEPOSIT/WITHDRAWAL LIMIT LOGIC //////////////////////////////////////////////////////////////*/ /** * @dev maxDeposit() according the EIP-4626 specification. */ function maxDeposit(address) public view override returns (uint256 maxAssets) { if (locked || auctionInProgress || IGuardian(address(lendingPool)).depositPaused()) return 0; uint256 supplyCap = lendingPool.supplyCap(); uint256 realisedLiquidity = lendingPool.totalRealisedLiquidity(); uint256 interests = lendingPool.calcUnrealisedDebt(); if (supplyCap > 0) { if (realisedLiquidity + interests > supplyCap) return 0; maxAssets = supplyCap - realisedLiquidity - interests; } else { maxAssets = type(uint128).max - realisedLiquidity - interests; } } /** * @dev maxMint() according the EIP-4626 specification. */ function maxMint(address) public view override returns (uint256 maxShares) { if (locked || auctionInProgress || IGuardian(address(lendingPool)).depositPaused()) return 0; uint256 supplyCap = lendingPool.supplyCap(); uint256 realisedLiquidity = lendingPool.totalRealisedLiquidity(); uint256 interests = lendingPool.calcUnrealisedDebt(); if (supplyCap > 0) { if (realisedLiquidity + interests > supplyCap) return 0; maxShares = convertToShares(supplyCap - realisedLiquidity - interests); } else { maxShares = convertToShares(type(uint128).max - realisedLiquidity - interests); } } /** * @dev maxWithdraw() according the EIP-4626 specification. */ function maxWithdraw(address owner_) public view override returns (uint256 maxAssets) { if (locked || auctionInProgress || IGuardian(address(lendingPool)).withdrawPaused()) return 0; uint256 availableAssets = asset.balanceOf(address(lendingPool)); uint256 claimableAssets = convertToAssets(balanceOf[owner_]); maxAssets = availableAssets < claimableAssets ? availableAssets : claimableAssets; } /** * @dev maxRedeem() according the EIP-4626 specification. */ function maxRedeem(address owner_) public view override returns (uint256 maxShares) { if (locked || auctionInProgress || IGuardian(address(lendingPool)).withdrawPaused()) return 0; uint256 claimableShares = balanceOf[owner_]; if (claimableShares == 0) return 0; uint256 availableShares = convertToShares(asset.balanceOf(address(lendingPool))); maxShares = availableShares < claimableShares ? availableShares : claimableShares; } }
// SPDX-License-Identifier: AGPL-3.0-only pragma solidity >=0.8.0; /// @notice Simple single owner authorization mixin. /// @author Solmate (https://github.com/transmissions11/solmate/blob/main/src/auth/Owned.sol) abstract contract Owned { /*////////////////////////////////////////////////////////////// EVENTS //////////////////////////////////////////////////////////////*/ event OwnershipTransferred(address indexed user, address indexed newOwner); /*////////////////////////////////////////////////////////////// OWNERSHIP STORAGE //////////////////////////////////////////////////////////////*/ address public owner; modifier onlyOwner() virtual { require(msg.sender == owner, "UNAUTHORIZED"); _; } /*////////////////////////////////////////////////////////////// CONSTRUCTOR //////////////////////////////////////////////////////////////*/ constructor(address _owner) { owner = _owner; emit OwnershipTransferred(address(0), _owner); } /*////////////////////////////////////////////////////////////// OWNERSHIP LOGIC //////////////////////////////////////////////////////////////*/ function transferOwnership(address newOwner) public virtual onlyOwner { owner = newOwner; emit OwnershipTransferred(msg.sender, newOwner); } }
// SPDX-License-Identifier: AGPL-3.0-only pragma solidity >=0.8.0; import {ERC20} from "../tokens/ERC20.sol"; import {SafeTransferLib} from "../utils/SafeTransferLib.sol"; import {FixedPointMathLib} from "../utils/FixedPointMathLib.sol"; /// @notice Minimal ERC4626 tokenized Vault implementation. /// @author Solmate (https://github.com/transmissions11/solmate/blob/main/src/mixins/ERC4626.sol) abstract contract ERC4626 is ERC20 { using SafeTransferLib for ERC20; using FixedPointMathLib for uint256; /*////////////////////////////////////////////////////////////// EVENTS //////////////////////////////////////////////////////////////*/ event Deposit(address indexed caller, address indexed owner, uint256 assets, uint256 shares); event Withdraw( address indexed caller, address indexed receiver, address indexed owner, uint256 assets, uint256 shares ); /*////////////////////////////////////////////////////////////// IMMUTABLES //////////////////////////////////////////////////////////////*/ ERC20 public immutable asset; constructor( ERC20 _asset, string memory _name, string memory _symbol ) ERC20(_name, _symbol, _asset.decimals()) { asset = _asset; } /*////////////////////////////////////////////////////////////// DEPOSIT/WITHDRAWAL LOGIC //////////////////////////////////////////////////////////////*/ function deposit(uint256 assets, address receiver) public virtual returns (uint256 shares) { // Check for rounding error since we round down in previewDeposit. require((shares = previewDeposit(assets)) != 0, "ZERO_SHARES"); // Need to transfer before minting or ERC777s could reenter. asset.safeTransferFrom(msg.sender, address(this), assets); _mint(receiver, shares); emit Deposit(msg.sender, receiver, assets, shares); afterDeposit(assets, shares); } function mint(uint256 shares, address receiver) public virtual returns (uint256 assets) { assets = previewMint(shares); // No need to check for rounding error, previewMint rounds up. // Need to transfer before minting or ERC777s could reenter. asset.safeTransferFrom(msg.sender, address(this), assets); _mint(receiver, shares); emit Deposit(msg.sender, receiver, assets, shares); afterDeposit(assets, shares); } function withdraw( uint256 assets, address receiver, address owner ) public virtual returns (uint256 shares) { shares = previewWithdraw(assets); // No need to check for rounding error, previewWithdraw rounds up. if (msg.sender != owner) { uint256 allowed = allowance[owner][msg.sender]; // Saves gas for limited approvals. if (allowed != type(uint256).max) allowance[owner][msg.sender] = allowed - shares; } beforeWithdraw(assets, shares); _burn(owner, shares); emit Withdraw(msg.sender, receiver, owner, assets, shares); asset.safeTransfer(receiver, assets); } function redeem( uint256 shares, address receiver, address owner ) public virtual returns (uint256 assets) { if (msg.sender != owner) { uint256 allowed = allowance[owner][msg.sender]; // Saves gas for limited approvals. if (allowed != type(uint256).max) allowance[owner][msg.sender] = allowed - shares; } // Check for rounding error since we round down in previewRedeem. require((assets = previewRedeem(shares)) != 0, "ZERO_ASSETS"); beforeWithdraw(assets, shares); _burn(owner, shares); emit Withdraw(msg.sender, receiver, owner, assets, shares); asset.safeTransfer(receiver, assets); } /*////////////////////////////////////////////////////////////// ACCOUNTING LOGIC //////////////////////////////////////////////////////////////*/ function totalAssets() public view virtual returns (uint256); function convertToShares(uint256 assets) public view virtual returns (uint256) { uint256 supply = totalSupply; // Saves an extra SLOAD if totalSupply is non-zero. return supply == 0 ? assets : assets.mulDivDown(supply, totalAssets()); } function convertToAssets(uint256 shares) public view virtual returns (uint256) { uint256 supply = totalSupply; // Saves an extra SLOAD if totalSupply is non-zero. return supply == 0 ? shares : shares.mulDivDown(totalAssets(), supply); } function previewDeposit(uint256 assets) public view virtual returns (uint256) { return convertToShares(assets); } function previewMint(uint256 shares) public view virtual returns (uint256) { uint256 supply = totalSupply; // Saves an extra SLOAD if totalSupply is non-zero. return supply == 0 ? shares : shares.mulDivUp(totalAssets(), supply); } function previewWithdraw(uint256 assets) public view virtual returns (uint256) { uint256 supply = totalSupply; // Saves an extra SLOAD if totalSupply is non-zero. return supply == 0 ? assets : assets.mulDivUp(supply, totalAssets()); } function previewRedeem(uint256 shares) public view virtual returns (uint256) { return convertToAssets(shares); } /*////////////////////////////////////////////////////////////// DEPOSIT/WITHDRAWAL LIMIT LOGIC //////////////////////////////////////////////////////////////*/ function maxDeposit(address) public view virtual returns (uint256) { return type(uint256).max; } function maxMint(address) public view virtual returns (uint256) { return type(uint256).max; } function maxWithdraw(address owner) public view virtual returns (uint256) { return convertToAssets(balanceOf[owner]); } function maxRedeem(address owner) public view virtual returns (uint256) { return balanceOf[owner]; } /*////////////////////////////////////////////////////////////// INTERNAL HOOKS LOGIC //////////////////////////////////////////////////////////////*/ function beforeWithdraw(uint256 assets, uint256 shares) internal virtual {} function afterDeposit(uint256 assets, uint256 shares) internal virtual {} }
// SPDX-License-Identifier: AGPL-3.0-only pragma solidity >=0.8.0; /// @notice Modern and gas efficient ERC20 + EIP-2612 implementation. /// @author Solmate (https://github.com/transmissions11/solmate/blob/main/src/tokens/ERC20.sol) /// @author Modified from Uniswap (https://github.com/Uniswap/uniswap-v2-core/blob/master/contracts/UniswapV2ERC20.sol) /// @dev Do not manually set balances without updating totalSupply, as the sum of all user balances must not exceed it. abstract contract ERC20 { /*////////////////////////////////////////////////////////////// EVENTS //////////////////////////////////////////////////////////////*/ event Transfer(address indexed from, address indexed to, uint256 amount); event Approval(address indexed owner, address indexed spender, uint256 amount); /*////////////////////////////////////////////////////////////// METADATA STORAGE //////////////////////////////////////////////////////////////*/ string public name; string public symbol; uint8 public immutable decimals; /*////////////////////////////////////////////////////////////// ERC20 STORAGE //////////////////////////////////////////////////////////////*/ uint256 public totalSupply; mapping(address => uint256) public balanceOf; mapping(address => mapping(address => uint256)) public allowance; /*////////////////////////////////////////////////////////////// EIP-2612 STORAGE //////////////////////////////////////////////////////////////*/ uint256 internal immutable INITIAL_CHAIN_ID; bytes32 internal immutable INITIAL_DOMAIN_SEPARATOR; mapping(address => uint256) public nonces; /*////////////////////////////////////////////////////////////// CONSTRUCTOR //////////////////////////////////////////////////////////////*/ constructor( string memory _name, string memory _symbol, uint8 _decimals ) { name = _name; symbol = _symbol; decimals = _decimals; INITIAL_CHAIN_ID = block.chainid; INITIAL_DOMAIN_SEPARATOR = computeDomainSeparator(); } /*////////////////////////////////////////////////////////////// ERC20 LOGIC //////////////////////////////////////////////////////////////*/ function approve(address spender, uint256 amount) public virtual returns (bool) { allowance[msg.sender][spender] = amount; emit Approval(msg.sender, spender, amount); return true; } function transfer(address to, uint256 amount) public virtual returns (bool) { balanceOf[msg.sender] -= amount; // Cannot overflow because the sum of all user // balances can't exceed the max uint256 value. unchecked { balanceOf[to] += amount; } emit Transfer(msg.sender, to, amount); return true; } function transferFrom( address from, address to, uint256 amount ) public virtual returns (bool) { uint256 allowed = allowance[from][msg.sender]; // Saves gas for limited approvals. if (allowed != type(uint256).max) allowance[from][msg.sender] = allowed - amount; balanceOf[from] -= amount; // Cannot overflow because the sum of all user // balances can't exceed the max uint256 value. unchecked { balanceOf[to] += amount; } emit Transfer(from, to, amount); return true; } /*////////////////////////////////////////////////////////////// EIP-2612 LOGIC //////////////////////////////////////////////////////////////*/ function permit( address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s ) public virtual { require(deadline >= block.timestamp, "PERMIT_DEADLINE_EXPIRED"); // Unchecked because the only math done is incrementing // the owner's nonce which cannot realistically overflow. unchecked { address recoveredAddress = ecrecover( keccak256( abi.encodePacked( "\x19\x01", DOMAIN_SEPARATOR(), keccak256( abi.encode( keccak256( "Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)" ), owner, spender, value, nonces[owner]++, deadline ) ) ) ), v, r, s ); require(recoveredAddress != address(0) && recoveredAddress == owner, "INVALID_SIGNER"); allowance[recoveredAddress][spender] = value; } emit Approval(owner, spender, value); } function DOMAIN_SEPARATOR() public view virtual returns (bytes32) { return block.chainid == INITIAL_CHAIN_ID ? INITIAL_DOMAIN_SEPARATOR : computeDomainSeparator(); } function computeDomainSeparator() internal view virtual returns (bytes32) { return keccak256( abi.encode( keccak256("EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)"), keccak256(bytes(name)), keccak256("1"), block.chainid, address(this) ) ); } /*////////////////////////////////////////////////////////////// INTERNAL MINT/BURN LOGIC //////////////////////////////////////////////////////////////*/ function _mint(address to, uint256 amount) internal virtual { totalSupply += amount; // Cannot overflow because the sum of all user // balances can't exceed the max uint256 value. unchecked { balanceOf[to] += amount; } emit Transfer(address(0), to, amount); } function _burn(address from, uint256 amount) internal virtual { balanceOf[from] -= amount; // Cannot underflow because a user's balance // will never be larger than the total supply. unchecked { totalSupply -= amount; } emit Transfer(from, address(0), amount); } }
// SPDX-License-Identifier: AGPL-3.0-only pragma solidity >=0.8.0; /// @notice Arithmetic library with operations for fixed-point numbers. /// @author Solmate (https://github.com/transmissions11/solmate/blob/main/src/utils/FixedPointMathLib.sol) /// @author Inspired by USM (https://github.com/usmfum/USM/blob/master/contracts/WadMath.sol) library FixedPointMathLib { /*////////////////////////////////////////////////////////////// SIMPLIFIED FIXED POINT OPERATIONS //////////////////////////////////////////////////////////////*/ uint256 internal constant MAX_UINT256 = 2**256 - 1; uint256 internal constant WAD = 1e18; // The scalar of ETH and most ERC20s. function mulWadDown(uint256 x, uint256 y) internal pure returns (uint256) { return mulDivDown(x, y, WAD); // Equivalent to (x * y) / WAD rounded down. } function mulWadUp(uint256 x, uint256 y) internal pure returns (uint256) { return mulDivUp(x, y, WAD); // Equivalent to (x * y) / WAD rounded up. } function divWadDown(uint256 x, uint256 y) internal pure returns (uint256) { return mulDivDown(x, WAD, y); // Equivalent to (x * WAD) / y rounded down. } function divWadUp(uint256 x, uint256 y) internal pure returns (uint256) { return mulDivUp(x, WAD, y); // Equivalent to (x * WAD) / y rounded up. } /*////////////////////////////////////////////////////////////// LOW LEVEL FIXED POINT OPERATIONS //////////////////////////////////////////////////////////////*/ function mulDivDown( uint256 x, uint256 y, uint256 denominator ) internal pure returns (uint256 z) { /// @solidity memory-safe-assembly assembly { // Equivalent to require(denominator != 0 && (y == 0 || x <= type(uint256).max / y)) if iszero(mul(denominator, iszero(mul(y, gt(x, div(MAX_UINT256, y)))))) { revert(0, 0) } // Divide x * y by the denominator. z := div(mul(x, y), denominator) } } function mulDivUp( uint256 x, uint256 y, uint256 denominator ) internal pure returns (uint256 z) { /// @solidity memory-safe-assembly assembly { // Equivalent to require(denominator != 0 && (y == 0 || x <= type(uint256).max / y)) if iszero(mul(denominator, iszero(mul(y, gt(x, div(MAX_UINT256, y)))))) { revert(0, 0) } // If x * y modulo the denominator is strictly greater than 0, // 1 is added to round up the division of x * y by the denominator. z := add(gt(mod(mul(x, y), denominator), 0), div(mul(x, y), denominator)) } } function rpow( uint256 x, uint256 n, uint256 scalar ) internal pure returns (uint256 z) { /// @solidity memory-safe-assembly assembly { switch x case 0 { switch n case 0 { // 0 ** 0 = 1 z := scalar } default { // 0 ** n = 0 z := 0 } } default { switch mod(n, 2) case 0 { // If n is even, store scalar in z for now. z := scalar } default { // If n is odd, store x in z for now. z := x } // Shifting right by 1 is like dividing by 2. let half := shr(1, scalar) for { // Shift n right by 1 before looping to halve it. n := shr(1, n) } n { // Shift n right by 1 each iteration to halve it. n := shr(1, n) } { // Revert immediately if x ** 2 would overflow. // Equivalent to iszero(eq(div(xx, x), x)) here. if shr(128, x) { revert(0, 0) } // Store x squared. let xx := mul(x, x) // Round to the nearest number. let xxRound := add(xx, half) // Revert if xx + half overflowed. if lt(xxRound, xx) { revert(0, 0) } // Set x to scaled xxRound. x := div(xxRound, scalar) // If n is even: if mod(n, 2) { // Compute z * x. let zx := mul(z, x) // If z * x overflowed: if iszero(eq(div(zx, x), z)) { // Revert if x is non-zero. if iszero(iszero(x)) { revert(0, 0) } } // Round to the nearest number. let zxRound := add(zx, half) // Revert if zx + half overflowed. if lt(zxRound, zx) { revert(0, 0) } // Return properly scaled zxRound. z := div(zxRound, scalar) } } } } } /*////////////////////////////////////////////////////////////// GENERAL NUMBER UTILITIES //////////////////////////////////////////////////////////////*/ function sqrt(uint256 x) internal pure returns (uint256 z) { /// @solidity memory-safe-assembly assembly { let y := x // We start y at x, which will help us make our initial estimate. z := 181 // The "correct" value is 1, but this saves a multiplication later. // This segment is to get a reasonable initial estimate for the Babylonian method. With a bad // start, the correct # of bits increases ~linearly each iteration instead of ~quadratically. // We check y >= 2^(k + 8) but shift right by k bits // each branch to ensure that if x >= 256, then y >= 256. if iszero(lt(y, 0x10000000000000000000000000000000000)) { y := shr(128, y) z := shl(64, z) } if iszero(lt(y, 0x1000000000000000000)) { y := shr(64, y) z := shl(32, z) } if iszero(lt(y, 0x10000000000)) { y := shr(32, y) z := shl(16, z) } if iszero(lt(y, 0x1000000)) { y := shr(16, y) z := shl(8, z) } // Goal was to get z*z*y within a small factor of x. More iterations could // get y in a tighter range. Currently, we will have y in [256, 256*2^16). // We ensured y >= 256 so that the relative difference between y and y+1 is small. // That's not possible if x < 256 but we can just verify those cases exhaustively. // Now, z*z*y <= x < z*z*(y+1), and y <= 2^(16+8), and either y >= 256, or x < 256. // Correctness can be checked exhaustively for x < 256, so we assume y >= 256. // Then z*sqrt(y) is within sqrt(257)/sqrt(256) of sqrt(x), or about 20bps. // For s in the range [1/256, 256], the estimate f(s) = (181/1024) * (s+1) is in the range // (1/2.84 * sqrt(s), 2.84 * sqrt(s)), with largest error when s = 1 and when s = 256 or 1/256. // Since y is in [256, 256*2^16), let a = y/65536, so that a is in [1/256, 256). Then we can estimate // sqrt(y) using sqrt(65536) * 181/1024 * (a + 1) = 181/4 * (y + 65536)/65536 = 181 * (y + 65536)/2^18. // There is no overflow risk here since y < 2^136 after the first branch above. z := shr(18, mul(z, add(y, 65536))) // A mul() is saved from starting z at 181. // Given the worst case multiplicative error of 2.84 above, 7 iterations should be enough. z := shr(1, add(z, div(x, z))) z := shr(1, add(z, div(x, z))) z := shr(1, add(z, div(x, z))) z := shr(1, add(z, div(x, z))) z := shr(1, add(z, div(x, z))) z := shr(1, add(z, div(x, z))) z := shr(1, add(z, div(x, z))) // If x+1 is a perfect square, the Babylonian method cycles between // floor(sqrt(x)) and ceil(sqrt(x)). This statement ensures we return floor. // See: https://en.wikipedia.org/wiki/Integer_square_root#Using_only_integer_division // Since the ceil is rare, we save gas on the assignment and repeat division in the rare case. // If you don't care whether the floor or ceil square root is returned, you can remove this statement. z := sub(z, lt(div(x, z), z)) } } function unsafeMod(uint256 x, uint256 y) internal pure returns (uint256 z) { /// @solidity memory-safe-assembly assembly { // Mod x by y. Note this will return // 0 instead of reverting if y is zero. z := mod(x, y) } } function unsafeDiv(uint256 x, uint256 y) internal pure returns (uint256 r) { /// @solidity memory-safe-assembly assembly { // Divide x by y. Note this will return // 0 instead of reverting if y is zero. r := div(x, y) } } function unsafeDivUp(uint256 x, uint256 y) internal pure returns (uint256 z) { /// @solidity memory-safe-assembly assembly { // Add 1 to x * y if x % y > 0. Note this will // return 0 instead of reverting if y is zero. z := add(gt(mod(x, y), 0), div(x, y)) } } }
// SPDX-License-Identifier: AGPL-3.0-only pragma solidity >=0.8.0; import {ERC20} from "../tokens/ERC20.sol"; /// @notice Safe ETH and ERC20 transfer library that gracefully handles missing return values. /// @author Solmate (https://github.com/transmissions11/solmate/blob/main/src/utils/SafeTransferLib.sol) /// @dev Use with caution! Some functions in this library knowingly create dirty bits at the destination of the free memory pointer. /// @dev Note that none of the functions in this library check that a token has code at all! That responsibility is delegated to the caller. library SafeTransferLib { /*////////////////////////////////////////////////////////////// ETH OPERATIONS //////////////////////////////////////////////////////////////*/ function safeTransferETH(address to, uint256 amount) internal { bool success; /// @solidity memory-safe-assembly assembly { // Transfer the ETH and store if it succeeded or not. success := call(gas(), to, amount, 0, 0, 0, 0) } require(success, "ETH_TRANSFER_FAILED"); } /*////////////////////////////////////////////////////////////// ERC20 OPERATIONS //////////////////////////////////////////////////////////////*/ function safeTransferFrom( ERC20 token, address from, address to, uint256 amount ) internal { bool success; /// @solidity memory-safe-assembly assembly { // Get a pointer to some free memory. let freeMemoryPointer := mload(0x40) // Write the abi-encoded calldata into memory, beginning with the function selector. mstore(freeMemoryPointer, 0x23b872dd00000000000000000000000000000000000000000000000000000000) mstore(add(freeMemoryPointer, 4), from) // Append the "from" argument. mstore(add(freeMemoryPointer, 36), to) // Append the "to" argument. mstore(add(freeMemoryPointer, 68), amount) // Append the "amount" argument. success := and( // Set success to whether the call reverted, if not we check it either // returned exactly 1 (can't just be non-zero data), or had no return data. or(and(eq(mload(0), 1), gt(returndatasize(), 31)), iszero(returndatasize())), // We use 100 because the length of our calldata totals up like so: 4 + 32 * 3. // We use 0 and 32 to copy up to 32 bytes of return data into the scratch space. // Counterintuitively, this call must be positioned second to the or() call in the // surrounding and() call or else returndatasize() will be zero during the computation. call(gas(), token, 0, freeMemoryPointer, 100, 0, 32) ) } require(success, "TRANSFER_FROM_FAILED"); } function safeTransfer( ERC20 token, address to, uint256 amount ) internal { bool success; /// @solidity memory-safe-assembly assembly { // Get a pointer to some free memory. let freeMemoryPointer := mload(0x40) // Write the abi-encoded calldata into memory, beginning with the function selector. mstore(freeMemoryPointer, 0xa9059cbb00000000000000000000000000000000000000000000000000000000) mstore(add(freeMemoryPointer, 4), to) // Append the "to" argument. mstore(add(freeMemoryPointer, 36), amount) // Append the "amount" argument. success := and( // Set success to whether the call reverted, if not we check it either // returned exactly 1 (can't just be non-zero data), or had no return data. or(and(eq(mload(0), 1), gt(returndatasize(), 31)), iszero(returndatasize())), // We use 68 because the length of our calldata totals up like so: 4 + 32 * 2. // We use 0 and 32 to copy up to 32 bytes of return data into the scratch space. // Counterintuitively, this call must be positioned second to the or() call in the // surrounding and() call or else returndatasize() will be zero during the computation. call(gas(), token, 0, freeMemoryPointer, 68, 0, 32) ) } require(success, "TRANSFER_FAILED"); } function safeApprove( ERC20 token, address to, uint256 amount ) internal { bool success; /// @solidity memory-safe-assembly assembly { // Get a pointer to some free memory. let freeMemoryPointer := mload(0x40) // Write the abi-encoded calldata into memory, beginning with the function selector. mstore(freeMemoryPointer, 0x095ea7b300000000000000000000000000000000000000000000000000000000) mstore(add(freeMemoryPointer, 4), to) // Append the "to" argument. mstore(add(freeMemoryPointer, 36), amount) // Append the "amount" argument. success := and( // Set success to whether the call reverted, if not we check it either // returned exactly 1 (can't just be non-zero data), or had no return data. or(and(eq(mload(0), 1), gt(returndatasize(), 31)), iszero(returndatasize())), // We use 68 because the length of our calldata totals up like so: 4 + 32 * 2. // We use 0 and 32 to copy up to 32 bytes of return data into the scratch space. // Counterintuitively, this call must be positioned second to the or() call in the // surrounding and() call or else returndatasize() will be zero during the computation. call(gas(), token, 0, freeMemoryPointer, 68, 0, 32) ) } require(success, "APPROVE_FAILED"); } }
/** * Created by Pragma Labs * SPDX-License-Identifier: MIT */ pragma solidity ^0.8.13; interface IGuardian { /** * @notice Returns if Withdrawals are paused or not. * @return bool indicating if Withdrawals are paused or not. */ function withdrawPaused() external view returns (bool); /** * @notice Returns if Deposits are paused or not. * @return bool indicating if Deposits are paused or not. */ function depositPaused() external view returns (bool); }
/** * Created by Pragma Labs * SPDX-License-Identifier: MIT */ pragma solidity ^0.8.13; import { ERC20 } from "../../lib/solmate/src/tokens/ERC20.sol"; interface ILendingPool { /** * @notice returns the supply cap of the Lending Pool. * @return supplyCap The supply cap of the Lending Pool. */ function supplyCap() external view returns (uint128); /** * @notice returns the total realised liquidity of the Lending Pool. * @return totalRealisedLiquidity The total realised liquidity of the Lending Pool. */ function totalRealisedLiquidity() external view returns (uint128); /** * @notice Deposit assets in the Lending Pool. * @param assets The amount of assets of the underlying ERC-20 token being deposited. * @param from The address of the Liquidity Provider who deposits the underlying ERC-20 token via a Tranche. */ function depositInLendingPool(uint256 assets, address from) external; /** * @notice Withdraw assets from the Lending Pool. * @param assets The amount of assets of the underlying ERC-20 tokens being withdrawn. * @param receiver The address of the receiver of the underlying ERC-20 tokens. */ function withdrawFromLendingPool(uint256 assets, address receiver) external; /** * @notice Returns the redeemable amount of liquidity in the underlying asset of an address. * @param owner The address of the liquidity provider. * @return assets The redeemable amount of liquidity in the underlying asset. */ function liquidityOf(address owner) external view returns (uint256); /** * @notice liquidityOf, but syncs the unrealised interest first. * @param owner The address of the liquidity provider. * @return assets The redeemable amount of liquidity in the underlying asset. */ function liquidityOfAndSync(address owner) external returns (uint256); /** * @notice Calculates the unrealised debt (interests). * @return unrealisedDebt The unrealised debt. */ function calcUnrealisedDebt() external view returns (uint256); }
/** * Created by Pragma Labs * SPDX-License-Identifier: MIT */ pragma solidity ^0.8.13; interface ITranche { /** * @notice Locks the tranche in case all liquidity of the tranche is written of due to bad debt. */ function lock() external; /** * @notice Locks the tranche while an auction is in progress. * @param auctionInProgress Flag indicating if there are auctions in progress. */ function setAuctionInProgress(bool auctionInProgress) external; }
{ "remappings": [ "arcadia-lending/=lib/arcadia-lending/", "ds-test/=lib/ds-test/src/", "forge-std/=lib/forge-std/src/", "solmate/=lib/solmate/src/", "v2-periphery/=lib/v2-periphery/contracts/" ], "optimizer": { "enabled": true, "runs": 200 }, "metadata": { "bytecodeHash": "ipfs" }, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } }, "evmVersion": "london", "libraries": {} }
Contract Security Audit
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":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transfer","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transferFrom","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"unLock","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"assets","type":"uint256"},{"internalType":"address","name":"receiver","type":"address"},{"internalType":"address","name":"owner_","type":"address"}],"name":"withdraw","outputs":[{"internalType":"uint256","name":"shares","type":"uint256"}],"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)
000000000000000000000000d417c28af20884088f600e724441a3bab38b22cc000000000000000000000000000000000000000000000000000000000000006000000000000000000000000000000000000000000000000000000000000000a0000000000000000000000000000000000000000000000000000000000000000653656e696f72000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000027372000000000000000000000000000000000000000000000000000000000000
-----Decoded View---------------
Arg [0] : lendingPool_ (address): 0xD417c28aF20884088F600e724441a3baB38b22cc
Arg [1] : prefix_ (string): Senior
Arg [2] : prefixSymbol_ (string): sr
-----Encoded View---------------
7 Constructor Arguments found :
Arg [0] : 000000000000000000000000d417c28af20884088f600e724441a3bab38b22cc
Arg [1] : 0000000000000000000000000000000000000000000000000000000000000060
Arg [2] : 00000000000000000000000000000000000000000000000000000000000000a0
Arg [3] : 0000000000000000000000000000000000000000000000000000000000000006
Arg [4] : 53656e696f720000000000000000000000000000000000000000000000000000
Arg [5] : 0000000000000000000000000000000000000000000000000000000000000002
Arg [6] : 7372000000000000000000000000000000000000000000000000000000000000
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