mirror of
https://github.com/Instadapp/fluid-contracts-public.git
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112 lines
4.8 KiB
Solidity
112 lines
4.8 KiB
Solidity
// SPDX-License-Identifier: BUSL-1.1
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pragma solidity 0.8.21;
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import { IERC20 } from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
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import { Initializable } from "@openzeppelin/contracts-upgradeable/proxy/utils/Initializable.sol";
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import { OwnableUpgradeable } from "@openzeppelin/contracts-upgradeable/access/OwnableUpgradeable.sol";
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import { LiquiditySlotsLink } from "../../libraries/liquiditySlotsLink.sol";
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import { IFluidLiquidity } from "../../liquidity/interfaces/iLiquidity.sol";
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import { ILidoWithdrawalQueue } from "./interfaces/external/iLidoWithdrawalQueue.sol";
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import { Structs } from "./structs.sol";
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abstract contract Constants {
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/// @dev hundred percent at 1e2 precision
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uint256 internal constant HUNDRED_PERCENT = 1e4;
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/// @dev precision for exchange prices in Liquidity
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uint256 internal constant EXCHANGE_PRICES_PRECISION = 1e12;
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/// @dev address that is mapped to the chain native token at Liquidity
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address internal constant NATIVE_TOKEN_ADDRESS = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;
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/// @dev dust amount to borrow from Liquidity at initialize()
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uint256 internal constant DUST_BORROW_AMOUNT = 1e12;
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/// @notice address of the Liquidity contract.
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IFluidLiquidity internal immutable LIQUIDITY;
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/// @notice address of the Lido Withdrawal Queue contract (0x889edC2eDab5f40e902b864aD4d7AdE8E412F9B1)
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ILidoWithdrawalQueue internal immutable LIDO_WITHDRAWAL_QUEUE;
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/// @notice address of the StETH contract.
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IERC20 internal immutable STETH;
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/// @dev slot id in Liquidity contract for exchange prices storage slot for NATIVE_TOKEN_ADDRESS.
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bytes32 internal immutable LIQUIDITY_EXCHANGE_PRICES_SLOT;
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constructor(IFluidLiquidity liquidity_, ILidoWithdrawalQueue lidoWithdrawalQueue_, IERC20 stETH_) {
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LIQUIDITY = liquidity_;
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LIDO_WITHDRAWAL_QUEUE = lidoWithdrawalQueue_;
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STETH = stETH_;
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LIQUIDITY_EXCHANGE_PRICES_SLOT = LiquiditySlotsLink.calculateMappingStorageSlot(
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LiquiditySlotsLink.LIQUIDITY_EXCHANGE_PRICES_MAPPING_SLOT,
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NATIVE_TOKEN_ADDRESS
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);
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}
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/// @notice returns the constant values for LIQUIDITY, LIDO_WITHDRAWAL_QUEUE, STETH
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function constantsView() external view returns (IFluidLiquidity, ILidoWithdrawalQueue, IERC20) {
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return (LIQUIDITY, LIDO_WITHDRAWAL_QUEUE, STETH);
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}
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}
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abstract contract Variables is Initializable, OwnableUpgradeable, Constants, Structs {
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// ------------ storage variables from inherited contracts (Initializable, OwnableUpgradeable) come before vars here --------
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// @dev variables here start at storage slot 101, before is:
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// - Initializable with storage slot 0:
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// uint8 private _initialized;
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// bool private _initializing;
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// - OwnableUpgradeable with slots 1 to 100:
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// uint256[50] private __gap; (from ContextUpgradeable, slot 1 until slot 50)
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// address private _owner; (at slot 51)
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// uint256[49] private __gap; (slot 52 until slot 100)
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// ----------------------- slot 101 ---------------------------
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/// @notice maps claimTo address and requestIdFrom to the Claim struct containing necessary information for executing the claim process.
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mapping(address => mapping(uint256 => Claim)) public claims;
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// ----------------------- slot 102 ---------------------------
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/// @dev status for reentrancy guard
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uint8 internal _status;
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/// @notice maximum allowed percentage of LTV (loan-to-value). E.g. 90% -> max. 90 ETH can be borrowed with 100 stETH
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/// as collateral in withdrawal queue. ETH will be received at time of claim to cover the paid borrowed ETH amount.
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/// In 1e2 (1% = 100, 90% = 9_000, 100% = 10_000).
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/// Configurable by auths.
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uint16 public maxLTV;
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/// @notice flag whether allow list behavior is enabled or not.
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bool public allowListActive;
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// 28 bytes free
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// ----------------------- slot 103 ---------------------------
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/// @dev auths can update maxLTV.
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/// owner can add/remove auths.
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/// Owner is auth by default.
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mapping(address => uint256) internal _auths;
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// ----------------------- slot 104 ---------------------------
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/// @dev guardians can pause/unpause queue() and claim().
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/// owner can add/remove guardians.
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/// Owner is guardian by default.
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mapping(address => uint256) internal _guardians;
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// ----------------------- slot 105 ---------------------------
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/// @dev allowed users can use the StETH protocol (if `allowListActive` is true, then use is open for everyone).
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/// owner and auths can add/remove allowed users.
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mapping(address => uint256) internal _allowed;
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constructor(
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IFluidLiquidity liquidity_,
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ILidoWithdrawalQueue lidoWithdrawalQueue_,
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IERC20 stETH_
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) Constants(liquidity_, lidoWithdrawalQueue_, stETH_) {}
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}
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