mirror of
https://github.com/Instadapp/dsa-connectors-old.git
synced 2024-07-29 22:47:46 +00:00
494 lines
18 KiB
Solidity
494 lines
18 KiB
Solidity
pragma solidity ^0.6.0;
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pragma experimental ABIEncoderV2;
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import { SafeERC20 } from "../../node_modules/@openzeppelin/contracts/token/ERC20/SafeERC20.sol";
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import { IERC20 } from "../../node_modules/@openzeppelin/contracts/token/ERC20/IERC20.sol";
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interface LiqudityInterface {
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function deposit(address, uint) external payable;
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function withdraw(address, uint) external;
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function accessLiquidity(address[] calldata, uint[] calldata) external;
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function returnLiquidity(address[] calldata) external payable;
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function isTknAllowed(address) external view returns(bool);
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function tknToCTkn(address) external view returns(address);
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function liquidityBalance(address, address) external view returns(uint);
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function borrowedToken(address) external view returns(uint);
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}
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interface InstaPoolFeeInterface {
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function fee() external view returns(uint);
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function feeCollector() external view returns(address);
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}
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interface CTokenInterface {
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function borrowBalanceCurrent(address account) external returns (uint);
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function balanceOf(address owner) external view returns (uint256 balance);
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function repayBorrowBehalf(address borrower, uint repayAmount) external returns (uint); // For ERC20
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}
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interface CETHInterface {
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function borrowBalanceCurrent(address account) external returns (uint);
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function repayBorrowBehalf(address borrower) external payable;
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}
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interface TokenInterface {
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function allowance(address, address) external view returns (uint);
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function balanceOf(address) external view returns (uint);
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function approve(address, uint) external;
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function transfer(address, uint) external returns (bool);
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function transferFrom(address, address, uint) external returns (bool);
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}
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interface MemoryInterface {
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function getUint(uint _id) external returns (uint _num);
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function setUint(uint _id, uint _val) external;
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}
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interface EventInterface {
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function emitEvent(uint _connectorType, uint _connectorID, bytes32 _eventCode, bytes calldata _eventData) external;
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}
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contract DSMath {
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function add(uint x, uint y) internal pure returns (uint z) {
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require((z = x + y) >= x, "math-not-safe");
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}
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function mul(uint x, uint y) internal pure returns (uint z) {
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require(y == 0 || (z = x * y) / y == x, "math-not-safe");
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}
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function sub(uint x, uint y) internal pure returns (uint z) {
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require((z = x - y) <= x, "sub-overflow");
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}
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uint constant WAD = 10 ** 18;
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function wmul(uint x, uint y) internal pure returns (uint z) {
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z = add(mul(x, y), WAD / 2) / WAD;
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}
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function wdiv(uint x, uint y) internal pure returns (uint z) {
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z = add(mul(x, WAD), y / 2) / y;
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}
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}
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contract Helpers is DSMath {
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using SafeERC20 for IERC20;
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/**
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* @dev Return ethereum address
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*/
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function getAddressETH() internal pure returns (address) {
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return 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE; // ETH Address
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}
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/**
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* @dev Return Memory Variable Address
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*/
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function getMemoryAddr() internal pure returns (address) {
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return 0x8a5419CfC711B2343c17a6ABf4B2bAFaBb06957F; // InstaMemory Address
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}
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/**
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* @dev Return InstaEvent Address.
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*/
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function getEventAddr() internal pure returns (address) {
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return 0x2af7ea6Cb911035f3eb1ED895Cb6692C39ecbA97; // InstaEvent Address
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}
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/**
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* @dev Get Uint value from InstaMemory Contract.
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*/
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function getUint(uint getId, uint val) internal returns (uint returnVal) {
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returnVal = getId == 0 ? val : MemoryInterface(getMemoryAddr()).getUint(getId);
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}
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/**
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* @dev Set Uint value in InstaMemory Contract.
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*/
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function setUint(uint setId, uint val) internal {
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if (setId != 0) MemoryInterface(getMemoryAddr()).setUint(setId, val);
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}
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/**
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* @dev Connector Details
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*/
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function connectorID() public pure returns(uint _type, uint _id) {
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(_type, _id) = (1, 8);
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}
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function _transfer(address payable to, address token, uint _amt) internal {
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token == getAddressETH() ?
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to.transfer(_amt) :
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IERC20(token).safeTransfer(to, _amt);
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}
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function _getBalance(address token) internal view returns (uint256) {
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return token == getAddressETH() ?
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address(this).balance :
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TokenInterface(token).balanceOf(address(this));
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}
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}
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contract LiquidityHelpers is Helpers {
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/**
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* @dev Return InstaPool address
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*/
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function getLiquidityAddress() internal pure returns (address) {
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return 0x06cB7C24990cBE6b9F99982f975f9147c000fec6;
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}
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/**
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* @dev Return InstaPoolFee address
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*/
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function getInstaPoolFeeAddr() internal pure returns (address) {
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return 0x06cB7C24990cBE6b9F99982f975f9147c000fec6; // TODO - change
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}
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function calculateTotalFeeAmt(address token, uint amt) internal view returns (uint totalAmt) {
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uint fee = InstaPoolFeeInterface(getInstaPoolFeeAddr()).fee();
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uint flashAmt = LiqudityInterface(getLiquidityAddress()).borrowedToken(token);
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if (fee == 0) {
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totalAmt = amt;
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} else {
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uint feeAmt = wmul(flashAmt, fee);
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totalAmt = add(amt, feeAmt);
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}
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}
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function calculateFeeAmt(address token, uint amt) internal view returns (address feeCollector, uint feeAmt) {
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InstaPoolFeeInterface feeContract = InstaPoolFeeInterface(getInstaPoolFeeAddr());
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uint fee = feeContract.fee();
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feeCollector = feeContract.feeCollector();
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if (fee == 0) {
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feeAmt = 0;
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} else {
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feeAmt = wmul(amt, fee);
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uint totalAmt = add(amt, feeAmt);
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uint totalBal = _getBalance(token);
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require(totalBal >= totalAmt - 10, "Not-enough-balance");
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feeAmt = totalBal > totalAmt ? feeAmt : sub(totalBal, amt);
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}
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}
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function calculateFeeAmtOrigin(address token, uint amt)
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internal
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view
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returns (
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address feeCollector,
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uint poolFeeAmt,
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uint originFee
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)
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{
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uint feeAmt;
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(feeCollector, feeAmt) = calculateFeeAmt(token, amt);
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if (feeAmt == 0) {
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poolFeeAmt = 0;
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originFee = 0;
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} else {
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originFee = wmul(feeAmt, 20 * 10 ** 16); // 20%
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poolFeeAmt = sub(feeAmt, originFee);
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}
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}
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}
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contract LiquidityManage is LiquidityHelpers {
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event LogDepositLiquidity(address indexed token, uint256 tokenAmt, uint256 getId, uint256 setId);
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event LogWithdrawLiquidity(address indexed token, uint256 tokenAmt, uint256 getId, uint256 setId);
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/**
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* @dev Deposit Liquidity in InstaPool.
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* @param token token address.(For ETH: 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE)
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* @param amt token amount.
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* @param getId Get token amount at this ID from `InstaMemory` Contract.
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* @param setId Set token amount at this ID in `InstaMemory` Contract.
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*/
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function deposit(address token, uint amt, uint getId, uint setId) external payable {
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uint _amt = getUint(getId, amt);
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uint ethAmt;
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if (token == getAddressETH()) {
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_amt = _amt == uint(-1) ? address(this).balance : _amt;
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ethAmt = _amt;
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} else {
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_amt = _amt == uint(-1) ? TokenInterface(token).balanceOf(address(this)) : _amt;
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TokenInterface(token).approve(getLiquidityAddress(), _amt);
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}
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LiqudityInterface(getLiquidityAddress()).deposit.value(ethAmt)(token, _amt);
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setUint(setId, _amt);
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emit LogDepositLiquidity(token, _amt, getId, setId);
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bytes32 _eventCode = keccak256("LogDepositLiquidity(address,uint256,uint256,uint256)");
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bytes memory _eventParam = abi.encode(token, _amt, getId, setId);
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(uint _type, uint _id) = connectorID();
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EventInterface(getEventAddr()).emitEvent(_type, _id, _eventCode, _eventParam);
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}
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/**
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* @dev Withdraw Liquidity in InstaPool.
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* @param token token address.(For ETH: 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE)
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* @param amt token amount.
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* @param getId Get token amount at this ID from `InstaMemory` Contract.
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* @param setId Set token amount at this ID in `InstaMemory` Contract.
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*/
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function withdraw(address token, uint amt, uint getId, uint setId) external payable {
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uint _amt = getUint(getId, amt);
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LiqudityInterface(getLiquidityAddress()).withdraw(token, _amt);
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setUint(setId, _amt);
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emit LogWithdrawLiquidity(token, _amt, getId, setId);
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bytes32 _eventCode = keccak256("LogWithdrawLiquidity(address,uint256,uint256,uint256)");
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bytes memory _eventParam = abi.encode(token, _amt, getId, setId);
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(uint _type, uint _id) = connectorID();
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EventInterface(getEventAddr()).emitEvent(_type, _id, _eventCode, _eventParam);
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}
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}
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contract EventHelpers is LiquidityManage {
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event LogFlashBorrow(
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address indexed token,
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uint256 tokenAmt,
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uint256 getId,
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uint256 setId
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);
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event LogFlashPayback(
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address indexed token,
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uint256 tokenAmt,
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uint256 feeCollected,
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uint256 getId,
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uint256 setId
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);
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event LogOriginFeeCollected(
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address indexed origin,
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address indexed token,
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uint256 tokenAmt,
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uint256 originFeeAmt
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);
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function emitFlashBorrow(address token, uint256 tokenAmt, uint256 getId, uint256 setId) internal {
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emit LogFlashBorrow(token, tokenAmt, getId, setId);
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bytes32 _eventCode = keccak256("LogFlashBorrow(address,uint256,uint256,uint256)");
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bytes memory _eventParam = abi.encode(token, tokenAmt, getId, setId);
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(uint _type, uint _id) = connectorID();
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EventInterface(getEventAddr()).emitEvent(_type, _id, _eventCode, _eventParam);
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}
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function emitFlashPayback(address token, uint256 tokenAmt, uint256 feeCollected, uint256 getId, uint256 setId) internal {
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emit LogFlashPayback(token, tokenAmt, feeCollected, getId, setId);
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bytes32 _eventCode = keccak256("LogFlashPayback(address,uint256,uint256,uint256,uint256)");
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bytes memory _eventParam = abi.encode(token, tokenAmt, feeCollected, getId, setId);
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(uint _type, uint _id) = connectorID();
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EventInterface(getEventAddr()).emitEvent(_type, _id, _eventCode, _eventParam);
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}
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function emitOriginFeeCollected(address origin, address token, uint256 tokenAmt, uint256 originFeeAmt) internal {
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emit LogOriginFeeCollected(origin, token, tokenAmt, originFeeAmt);
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bytes32 _eventCodeOrigin = keccak256("LogOriginFeeCollected(address,address,uint256,uint256)");
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bytes memory _eventParamOrigin = abi.encode(origin, token, tokenAmt, originFeeAmt);
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(uint _type, uint _id) = connectorID();
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EventInterface(getEventAddr()).emitEvent(_type, _id, _eventCodeOrigin, _eventParamOrigin);
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}
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}
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contract LiquidityAccessHelper is EventHelpers {
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/**
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* @dev Set Fee Amount of borrowed flashloan using `getId`.
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* @param amt Get token amount at this ID from `InstaMemory` Contract.
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* @param getId Get token amount at this ID from `InstaMemory` Contract.
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* @param setId Set token amount at this ID in `InstaMemory` Contract.
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*/
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function setFeeAmount(address token, uint amt, uint getId, uint setId) external payable {
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uint _amt = getUint(getId, amt);
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require(_amt != 0, "amt-is-0");
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uint totalFee = calculateTotalFeeAmt(token, _amt);
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setUint(setId, totalFee);
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}
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}
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contract LiquidityAccess is LiquidityAccessHelper {
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/**
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* @dev Access Token Liquidity from InstaPool.
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* @param token token address.(For ETH: 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE)
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* @param amt token amount.
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* @param getId Get token amount at this ID from `InstaMemory` Contract.
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* @param setId Set token amount at this ID in `InstaMemory` Contract.
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*/
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function flashBorrow(address token, uint amt, uint getId, uint setId) external payable {
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uint _amt = getUint(getId, amt);
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address[] memory _tknAddrs = new address[](1);
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_tknAddrs[0] = token;
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uint[] memory _amts = new uint[](1);
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_amts[0] = _amt;
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LiqudityInterface(getLiquidityAddress()).accessLiquidity(_tknAddrs, _amts);
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setUint(setId, _amt);
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emitFlashBorrow(token, _amt, getId, setId);
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}
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/**
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* @dev Return Token Liquidity from InstaPool.
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* @param token token address.(For ETH: 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE)
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* @param getId Get token amount at this ID from `InstaMemory` Contract.
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* @param setId Set token amount at this ID in `InstaMemory` Contract.
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*/
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function flashPayback(address token, uint getId, uint setId) external payable {
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LiqudityInterface liquidityContract = LiqudityInterface(getLiquidityAddress());
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uint _amt = liquidityContract.borrowedToken(token);
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(address feeCollector, uint feeAmt) = calculateFeeAmt(token, _amt);
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address[] memory _tknAddrs = new address[](1);
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_tknAddrs[0] = token;
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_transfer(payable(address(liquidityContract)), token, _amt);
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liquidityContract.returnLiquidity(_tknAddrs);
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if (feeAmt > 0) _transfer(payable(feeCollector), token, feeAmt);
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setUint(setId, _amt);
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emitFlashPayback(token, _amt, feeAmt, getId, setId);
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}
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/**
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* @dev Return Token Liquidity from InstaPool.
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* @param origin origin address to transfer 20% of the collected fee.
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* @param token token address.(For ETH: 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE)
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* @param getId Get token amount at this ID from `InstaMemory` Contract.
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* @param setId Set token amount at this ID in `InstaMemory` Contract.
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*/
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function flashPaybackOrigin(address origin, address token, uint getId, uint setId) external payable {
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require(origin != address(0), "origin-is-address(0)");
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LiqudityInterface liquidityContract = LiqudityInterface(getLiquidityAddress());
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uint _amt = liquidityContract.borrowedToken(token);
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(address feeCollector, uint poolFeeAmt, uint originFeeAmt) = calculateFeeAmtOrigin(token, _amt);
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address[] memory _tknAddrs = new address[](1);
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_tknAddrs[0] = token;
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_transfer(payable(address(liquidityContract)), token, _amt);
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liquidityContract.returnLiquidity(_tknAddrs);
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if (poolFeeAmt > 0) {
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_transfer(payable(feeCollector), token, poolFeeAmt);
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_transfer(payable(origin), token, originFeeAmt);
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}
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setUint(setId, _amt);
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emitFlashPayback(token, _amt, poolFeeAmt, getId, setId);
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emitOriginFeeCollected(origin, token, _amt, originFeeAmt);
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}
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}
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contract LiquidityAccessMulti is LiquidityAccess {
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/**
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* @dev Access Multiple Token liquidity from InstaPool.
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* @param tokens Array of token addresses.(For ETH: 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE)
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* @param amts Array of token amount.
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* @param getId get token amounts at this IDs from `InstaMemory` Contract.
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* @param setId set token amounts at this IDs in `InstaMemory` Contract.
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*/
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function flashMultiBorrow(
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address[] calldata tokens,
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uint[] calldata amts,
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uint[] calldata getId,
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uint[] calldata setId
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) external payable {
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uint _length = tokens.length;
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uint[] memory _amts = new uint[](_length);
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for (uint i = 0; i < _length; i++) {
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_amts[i] = getUint(getId[i], amts[i]);
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}
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LiqudityInterface(getLiquidityAddress()).accessLiquidity(tokens, _amts);
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for (uint i = 0; i < _length; i++) {
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setUint(setId[i], _amts[i]);
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emitFlashBorrow(tokens[i], _amts[i], getId[i], setId[i]);
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}
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}
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/**
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* @dev Return Multiple token liquidity from InstaPool.
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* @param tokens Array of token addresses.(For ETH: 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE)
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* @param getId get token amounts at this IDs from `InstaMemory` Contract.
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* @param setId set token amounts at this IDs in `InstaMemory` Contract.
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*/
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function flashMultiPayback(address[] calldata tokens, uint[] calldata getId, uint[] calldata setId) external payable {
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LiqudityInterface liquidityContract = LiqudityInterface(getLiquidityAddress());
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uint _length = tokens.length;
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for (uint i = 0; i < _length; i++) {
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uint _amt = liquidityContract.borrowedToken(tokens[i]);
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(address feeCollector, uint feeAmt) = calculateFeeAmt(tokens[i], _amt);
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_transfer(payable(address(liquidityContract)), tokens[i], _amt);
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if (feeAmt > 0) _transfer(payable(feeCollector), tokens[i], feeAmt);
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setUint(setId[i], _amt);
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emitFlashPayback(tokens[i], _amt, feeAmt, getId[i], setId[i]);
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}
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liquidityContract.returnLiquidity(tokens);
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}
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/**
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* @dev Return Multiple token liquidity from InstaPool and Tranfer 20% of the Fee to Origin.
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* @param tokens Array of token addresses.(For ETH: 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE)
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* @param getId get token amounts at this IDs from `InstaMemory` Contract.
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* @param setId set token amounts at this IDs in `InstaMemory` Contract.
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*/
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function flashMultiPaybackOrigin(address origin, address[] calldata tokens, uint[] calldata getId, uint[] calldata setId) external payable {
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LiqudityInterface liquidityContract = LiqudityInterface(getLiquidityAddress());
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uint _length = tokens.length;
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for (uint i = 0; i < _length; i++) {
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uint _amt = liquidityContract.borrowedToken(tokens[i]);
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(address feeCollector, uint poolFeeAmt, uint originFeeAmt) = calculateFeeAmtOrigin(tokens[i], _amt);
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_transfer(payable(address(liquidityContract)), tokens[i], _amt);
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if (poolFeeAmt > 0) {
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_transfer(payable(feeCollector), tokens[i], poolFeeAmt);
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_transfer(payable(origin), tokens[i], originFeeAmt);
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}
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setUint(setId[i], _amt);
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emitFlashPayback(tokens[i], _amt, poolFeeAmt, getId[i], setId[i]);
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emitOriginFeeCollected(origin, tokens[i], _amt, originFeeAmt);
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}
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liquidityContract.returnLiquidity(tokens);
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}
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}
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contract ConnectInstaPool is LiquidityAccessMulti {
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string public name = "InstaPool-v2";
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}
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