ERC-1155
Overview
Max Total Supply
0
Holders
45
Market
Volume (24H)
N/A
Min Price (24H)
N/A
Max Price (24H)
N/A
Other Info
Token Contract
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# | Exchange | Pair | Price | 24H Volume | % Volume |
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Contract Name:
PremiaOption
Compiler Version
v0.7.6+commit.7338295f
Optimization Enabled:
Yes with 50 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: MIT pragma solidity ^0.7.0; pragma experimental ABIEncoderV2; import '@openzeppelin/contracts/token/ERC1155/ERC1155.sol'; import '@openzeppelin/contracts/token/ERC20/SafeERC20.sol'; import '@openzeppelin/contracts/access/Ownable.sol'; import '@openzeppelin/contracts/utils/ReentrancyGuard.sol'; import '@openzeppelin/contracts/utils/SafeCast.sol'; import "./interface/IERC20Extended.sol"; import "./interface/IFeeCalculator.sol"; import "./interface/IFlashLoanReceiver.sol"; import "./interface/IPremiaReferral.sol"; import "./interface/IPremiaUncutErc20.sol"; import "./uniswapV2/interfaces/IUniswapV2Router02.sol"; /// @author Premia /// @title An option contract contract PremiaOption is Ownable, ERC1155, ReentrancyGuard { using SafeMath for uint256; using SafeERC20 for IERC20; struct OptionWriteArgs { address token; // Token address uint256 amount; // Amount of tokens to write option for uint256 strikePrice; // Strike price (Must follow strikePriceIncrement of token) uint256 expiration; // Expiration timestamp of the option (Must follow expirationIncrement) bool isCall; // If true : Call option | If false : Put option } struct OptionData { address token; // Token address uint256 strikePrice; // Strike price (Must follow strikePriceIncrement of token) uint256 expiration; // Expiration timestamp of the option (Must follow expirationIncrement) bool isCall; // If true : Call option | If false : Put option uint256 claimsPreExp; // Amount of options from which the funds have been withdrawn pre expiration uint256 claimsPostExp; // Amount of options from which the funds have been withdrawn post expiration uint256 exercised; // Amount of options which have been exercised uint256 supply; // Total circulating supply uint8 decimals; // Token decimals } // Total write cost = collateral + fee + feeReferrer struct QuoteWrite { address collateralToken; // The token to deposit as collateral uint256 collateral; // The amount of collateral to deposit uint8 collateralDecimals; // Decimals of collateral token uint256 fee; // The amount of collateralToken needed to be paid as protocol fee uint256 feeReferrer; // The amount of collateralToken which will be paid the referrer } // Total exercise cost = input + fee + feeReferrer struct QuoteExercise { address inputToken; // Input token for exercise uint256 input; // Amount of input token to pay to exercise uint8 inputDecimals; // Decimals of input token address outputToken; // Output token from the exercise uint256 output; // Amount of output tokens which will be received on exercise uint8 outputDecimals; // Decimals of output token uint256 fee; // The amount of inputToken needed to be paid as protocol fee uint256 feeReferrer; // The amount of inputToken which will be paid to the referrer } struct Pool { uint256 tokenAmount; // The amount of tokens in the option pool uint256 denominatorAmount; // The amounts of denominator in the option pool } IERC20 public denominator; uint8 public denominatorDecimals; ////////////////////////////////////////////////// // Address receiving protocol fees (PremiaMaker) address public feeRecipient; // PremiaReferral contract IPremiaReferral public premiaReferral; // The uPremia token IPremiaUncutErc20 public uPremia; // FeeCalculator contract IFeeCalculator public feeCalculator; ////////////////////////////////////////////////// // Whitelisted tokens for which options can be written (Each token must also have a non 0 strike price increment to be enabled) address[] public tokens; // Strike price increment mapping of each token mapping (address => uint256) public tokenStrikeIncrement; ////////////////////////////////////////////////// // The option id of next option type which will be created uint256 public nextOptionId = 1; // Offset to add to Unix timestamp to make it Fri 23:59:59 UTC uint256 private constant _baseExpiration = 172799; // Expiration increment uint256 private constant _expirationIncrement = 1 weeks; // Max expiration time from now uint256 public maxExpiration = 365 days; // Uniswap routers allowed to be used for swap from flashExercise address[] public whitelistedUniswapRouters; // token => expiration => strikePrice => isCall (1 for call, 0 for put) => optionId mapping (address => mapping(uint256 => mapping(uint256 => mapping (bool => uint256)))) public options; // optionId => OptionData mapping (uint256 => OptionData) public optionData; // optionId => Pool mapping (uint256 => Pool) public pools; // account => optionId => amount of options written mapping (address => mapping (uint256 => uint256)) public nbWritten; //////////// // Events // //////////// event SetToken(address indexed token, uint256 strikePriceIncrement); event OptionIdCreated(uint256 indexed optionId, address indexed token); event OptionWritten(address indexed owner, uint256 indexed optionId, address indexed token, uint256 amount); event OptionCancelled(address indexed owner, uint256 indexed optionId, address indexed token, uint256 amount); event OptionExercised(address indexed user, uint256 indexed optionId, address indexed token, uint256 amount); event Withdraw(address indexed user, uint256 indexed optionId, address indexed token, uint256 amount); event FeePaid(address indexed user, address indexed token, address indexed referrer, uint256 feeProtocol, uint256 feeReferrer); ////////////////////////////////////////////////// ////////////////////////////////////////////////// ////////////////////////////////////////////////// /// @param _uri URI of ERC1155 metadata /// @param _denominator The token used as denominator /// @param _uPremia The uPremia token /// @param _feeCalculator FeeCalculator contract /// @param _premiaReferral PremiaReferral contract /// @param _feeRecipient Recipient of protocol fees (PremiaMaker) constructor(string memory _uri, IERC20 _denominator, IPremiaUncutErc20 _uPremia, IFeeCalculator _feeCalculator, IPremiaReferral _premiaReferral, address _feeRecipient) ERC1155(_uri) { denominator = _denominator; uPremia = _uPremia; feeCalculator = _feeCalculator; feeRecipient = _feeRecipient; premiaReferral = _premiaReferral; denominatorDecimals = IERC20Extended(address(_denominator)).decimals(); } ////////////////////////////////////////////////// ////////////////////////////////////////////////// ////////////////////////////////////////////////// /////////////// // Modifiers // /////////////// modifier notExpired(uint256 _optionId) { require(block.timestamp < optionData[_optionId].expiration, "Expired"); _; } modifier expired(uint256 _optionId) { require(block.timestamp >= optionData[_optionId].expiration, "Not expired"); _; } ////////////////////////////////////////////////// ////////////////////////////////////////////////// ////////////////////////////////////////////////// /////////// // Admin // /////////// /// @notice Set new URI for ERC1155 metadata /// @param _newUri The new URI function setURI(string memory _newUri) external onlyOwner { _setURI(_newUri); } /// @notice Set new protocol fee recipient /// @param _feeRecipient The new protocol fee recipient function setFeeRecipient(address _feeRecipient) external onlyOwner { feeRecipient = _feeRecipient; } /// @notice Set a new max expiration date for options writing (By default, 1 year from current date) /// @param _max The max amount of seconds in the future for which an option expiration can be set function setMaxExpiration(uint256 _max) external onlyOwner { maxExpiration = _max; } /// @notice Set a new PremiaReferral contract /// @param _premiaReferral The new PremiaReferral Contract function setPremiaReferral(IPremiaReferral _premiaReferral) external onlyOwner { premiaReferral = _premiaReferral; } /// @notice Set a new PremiaUncut contract /// @param _uPremia The new PremiaUncut Contract function setPremiaUncutErc20(IPremiaUncutErc20 _uPremia) external onlyOwner { uPremia = _uPremia; } /// @notice Set a new FeeCalculator contract /// @param _feeCalculator The new FeeCalculator Contract function setFeeCalculator(IFeeCalculator _feeCalculator) external onlyOwner { feeCalculator = _feeCalculator; } /// @notice Set settings for tokens to support writing of options paired to denominator /// @dev A value of 0 means this token is disabled and options cannot be written for it /// @param _tokens The list of tokens for which to set strike price increment /// @param _strikePriceIncrement The new strike price increment to set for each token function setTokens(address[] memory _tokens, uint256[] memory _strikePriceIncrement) external onlyOwner { require(_tokens.length == _strikePriceIncrement.length); for (uint256 i=0; i < _tokens.length; i++) { if (!_isInArray(_tokens[i], tokens)) { tokens.push(_tokens[i]); } require(_tokens[i] != address(denominator), "Cant add denominator"); tokenStrikeIncrement[_tokens[i]] = _strikePriceIncrement[i]; emit SetToken(_tokens[i], _strikePriceIncrement[i]); } } /// @notice Set a new list of whitelisted UniswapRouter contracts allowed to be used for flashExercise /// @param _addrList The new list of whitelisted routers function setWhitelistedUniswapRouters(address[] memory _addrList) external onlyOwner { delete whitelistedUniswapRouters; for (uint256 i=0; i < _addrList.length; i++) { whitelistedUniswapRouters.push(_addrList[i]); } } ////////////////////////////////////////////////// ////////// // View // ////////// /// @notice Get the id of an option /// @param _token Token for which the option is for /// @param _expiration Expiration timestamp of the option /// @param _strikePrice Strike price of the option /// @param _isCall Whether the option is a call or a put /// @return The option id function getOptionId(address _token, uint256 _expiration, uint256 _strikePrice, bool _isCall) public view returns(uint256) { return options[_token][_expiration][_strikePrice][_isCall]; } /// @notice Get the amount of whitelisted tokens /// @return The amount of whitelisted tokens function tokensLength() external view returns(uint256) { return tokens.length; } /// @notice Get a quote to write an option /// @param _from Address which will write the option /// @param _option The option to write /// @param _referrer Referrer /// @param _decimals The option token decimals /// @return The quote function getWriteQuote(address _from, OptionWriteArgs memory _option, address _referrer, uint8 _decimals) public view returns(QuoteWrite memory) { QuoteWrite memory quote; if (_option.isCall) { quote.collateralToken = _option.token; quote.collateral = _option.amount; quote.collateralDecimals = _decimals; } else { quote.collateralToken = address(denominator); quote.collateral = _option.amount.mul(_option.strikePrice).div(10**_decimals); quote.collateralDecimals = denominatorDecimals; } (uint256 fee, uint256 feeReferrer) = feeCalculator.getFeeAmounts(_from, _referrer != address(0), quote.collateral, IFeeCalculator.FeeType.Write); quote.fee = fee; quote.feeReferrer = feeReferrer; return quote; } /// @notice Get a quote to exercise an option /// @param _from Address which will exercise the option /// @param _option The option to exercise /// @param _referrer Referrer /// @param _decimals The option token decimals /// @return The quote function getExerciseQuote(address _from, OptionData memory _option, uint256 _amount, address _referrer, uint8 _decimals) public view returns(QuoteExercise memory) { QuoteExercise memory quote; uint256 tokenAmount = _amount; uint256 denominatorAmount = _amount.mul(_option.strikePrice).div(10**_decimals); if (_option.isCall) { quote.inputToken = address(denominator); quote.input = denominatorAmount; quote.inputDecimals = denominatorDecimals; quote.outputToken = _option.token; quote.output = tokenAmount; quote.outputDecimals = _option.decimals; } else { quote.inputToken = _option.token; quote.input = tokenAmount; quote.inputDecimals = _option.decimals; quote.outputToken = address(denominator); quote.output = denominatorAmount; quote.outputDecimals = denominatorDecimals; } (uint256 fee, uint256 feeReferrer) = feeCalculator.getFeeAmounts(_from, _referrer != address(0), quote.input, IFeeCalculator.FeeType.Exercise); quote.fee = fee; quote.feeReferrer = feeReferrer; return quote; } ////////////////////////////////////////////////// ////////// // Main // ////////// /// @notice Get the id of the option, or create a new id if there is no existing id for it /// @param _token Token for which the option is for /// @param _expiration Expiration timestamp of the option /// @param _strikePrice Strike price of the option /// @param _isCall Whether the option is a call or a put /// @return The option id function getOptionIdOrCreate(address _token, uint256 _expiration, uint256 _strikePrice, bool _isCall) public returns(uint256) { uint256 optionId = getOptionId(_token, _expiration, _strikePrice, _isCall); if (optionId == 0) { _preCheckOptionIdCreate(_token, _strikePrice, _expiration); optionId = nextOptionId; options[_token][_expiration][_strikePrice][_isCall] = optionId; uint8 decimals = IERC20Extended(_token).decimals(); require(decimals <= 18, "Too many decimals"); pools[optionId] = Pool({ tokenAmount: 0, denominatorAmount: 0 }); optionData[optionId] = OptionData({ token: _token, expiration: _expiration, strikePrice: _strikePrice, isCall: _isCall, claimsPreExp: 0, claimsPostExp: 0, exercised: 0, supply: 0, decimals: decimals }); emit OptionIdCreated(optionId, _token); nextOptionId = nextOptionId.add(1); } return optionId; } ////////////////////////////////////////////////// /// @notice Write an option on behalf of an address with an existing option id (Used by market delayed writing) /// @dev Requires approval on option contract + token needed to write the option /// @param _from Address on behalf of which the option is written /// @param _optionId The id of the option to write /// @param _amount Amount of options to write /// @param _referrer Referrer /// @return The option id function writeOptionWithIdFrom(address _from, uint256 _optionId, uint256 _amount, address _referrer) external returns(uint256) { require(isApprovedForAll(_from, msg.sender), "Not approved"); OptionData memory data = optionData[_optionId]; OptionWriteArgs memory writeArgs = OptionWriteArgs({ token: data.token, amount: _amount, strikePrice: data.strikePrice, expiration: data.expiration, isCall: data.isCall }); return _writeOption(_from, writeArgs, _referrer); } /// @notice Write an option on behalf of an address /// @dev Requires approval on option contract + token needed to write the option /// @param _from Address on behalf of which the option is written /// @param _option The option to write /// @param _referrer Referrer /// @return The option id function writeOptionFrom(address _from, OptionWriteArgs memory _option, address _referrer) external returns(uint256) { require(isApprovedForAll(_from, msg.sender), "Not approved"); return _writeOption(_from, _option, _referrer); } /// @notice Write an option /// @param _option The option to write /// @param _referrer Referrer /// @return The option id function writeOption(OptionWriteArgs memory _option, address _referrer) public returns(uint256) { return _writeOption(msg.sender, _option, _referrer); } /// @notice Write an option on behalf of an address /// @param _from Address on behalf of which the option is written /// @param _option The option to write /// @param _referrer Referrer /// @return The option id function _writeOption(address _from, OptionWriteArgs memory _option, address _referrer) internal nonReentrant returns(uint256) { require(_option.amount > 0, "Amount <= 0"); uint256 optionId = getOptionIdOrCreate(_option.token, _option.expiration, _option.strikePrice, _option.isCall); // Set referrer or get current if one already exists _referrer = _trySetReferrer(_from, _referrer); QuoteWrite memory quote = getWriteQuote(_from, _option, _referrer, optionData[optionId].decimals); IERC20(quote.collateralToken).safeTransferFrom(_from, address(this), quote.collateral); _payFees(_from, IERC20(quote.collateralToken), _referrer, quote.fee, quote.feeReferrer, quote.collateralDecimals); if (_option.isCall) { pools[optionId].tokenAmount = pools[optionId].tokenAmount.add(quote.collateral); } else { pools[optionId].denominatorAmount = pools[optionId].denominatorAmount.add(quote.collateral); } nbWritten[_from][optionId] = nbWritten[_from][optionId].add(_option.amount); mint(_from, optionId, _option.amount); emit OptionWritten(_from, optionId, _option.token, _option.amount); return optionId; } ////////////////////////////////////////////////// /// @notice Cancel an option on behalf of an address. This will burn the option ERC1155 and withdraw collateral. /// @dev Requires approval of the option contract /// This is only doable by an address which wrote an amount of options >= _amount /// Must be called before expiration /// @param _from Address on behalf of which the option is cancelled /// @param _optionId The id of the option to cancel /// @param _amount Amount to cancel function cancelOptionFrom(address _from, uint256 _optionId, uint256 _amount) external { require(isApprovedForAll(_from, msg.sender), "Not approved"); _cancelOption(_from, _optionId, _amount); } /// @notice Cancel an option. This will burn the option ERC1155 and withdraw collateral. /// @dev This is only doable by an address which wrote an amount of options >= _amount /// Must be called before expiration /// @param _optionId The id of the option to cancel /// @param _amount Amount to cancel function cancelOption(uint256 _optionId, uint256 _amount) public { _cancelOption(msg.sender, _optionId, _amount); } /// @notice Cancel an option on behalf of an address. This will burn the option ERC1155 and withdraw collateral. /// @dev This is only doable by an address which wrote an amount of options >= _amount /// Must be called before expiration /// @param _from Address on behalf of which the option is cancelled /// @param _optionId The id of the option to cancel /// @param _amount Amount to cancel function _cancelOption(address _from, uint256 _optionId, uint256 _amount) internal nonReentrant { require(_amount > 0, "Amount <= 0"); require(nbWritten[_from][_optionId] >= _amount, "Not enough written"); burn(_from, _optionId, _amount); nbWritten[_from][_optionId] = nbWritten[_from][_optionId].sub(_amount); if (optionData[_optionId].isCall) { pools[_optionId].tokenAmount = pools[_optionId].tokenAmount.sub(_amount); IERC20(optionData[_optionId].token).safeTransfer(_from, _amount); } else { uint256 amount = _amount.mul(optionData[_optionId].strikePrice).div(10**optionData[_optionId].decimals); pools[_optionId].denominatorAmount = pools[_optionId].denominatorAmount.sub(amount); denominator.safeTransfer(_from, amount); } emit OptionCancelled(_from, _optionId, optionData[_optionId].token, _amount); } ////////////////////////////////////////////////// /// @notice Exercise an option on behalf of an address /// @dev Requires approval of the option contract /// @param _from Address on behalf of which the option will be exercised /// @param _optionId The id of the option to exercise /// @param _amount Amount to exercise /// @param _referrer Referrer function exerciseOptionFrom(address _from, uint256 _optionId, uint256 _amount, address _referrer) external { require(isApprovedForAll(_from, msg.sender), "Not approved"); _exerciseOption(_from, _optionId, _amount, _referrer); } /// @notice Exercise an option /// @param _optionId The id of the option to exercise /// @param _amount Amount to exercise /// @param _referrer Referrer function exerciseOption(uint256 _optionId, uint256 _amount, address _referrer) public { _exerciseOption(msg.sender, _optionId, _amount, _referrer); } /// @notice Exercise an option on behalf of an address /// @param _from Address on behalf of which the option will be exercised /// @param _optionId The id of the option to exercise /// @param _amount Amount to exercise /// @param _referrer Referrer function _exerciseOption(address _from, uint256 _optionId, uint256 _amount, address _referrer) internal nonReentrant { require(_amount > 0, "Amount <= 0"); OptionData storage data = optionData[_optionId]; burn(_from, _optionId, _amount); data.exercised = uint256(data.exercised).add(_amount); // Set referrer or get current if one already exists _referrer = _trySetReferrer(_from, _referrer); QuoteExercise memory quote = getExerciseQuote(_from, data, _amount, _referrer, data.decimals); IERC20(quote.inputToken).safeTransferFrom(_from, address(this), quote.input); _payFees(_from, IERC20(quote.inputToken), _referrer, quote.fee, quote.feeReferrer, quote.inputDecimals); if (data.isCall) { pools[_optionId].tokenAmount = pools[_optionId].tokenAmount.sub(quote.output); pools[_optionId].denominatorAmount = pools[_optionId].denominatorAmount.add(quote.input); } else { pools[_optionId].denominatorAmount = pools[_optionId].denominatorAmount.sub(quote.output); pools[_optionId].tokenAmount = pools[_optionId].tokenAmount.add(quote.input); } IERC20(quote.outputToken).safeTransfer(_from, quote.output); emit OptionExercised(_from, _optionId, data.token, _amount); } ////////////////////////////////////////////////// /// @notice Withdraw collateral from an option post expiration on behalf of an address. /// (Funds will be send to the address on behalf of which withdrawal is made) /// Funds in the option pool will be distributed pro rata of amount of options written by the address /// Ex : If after expiration date there has been 10 options written and there is 1 eth and 1000 DAI in the pool, /// Withdraw for each option will be worth 0.1 eth and 100 dai /// @dev Only callable by addresses which have unclaimed funds for options they wrote /// Requires approval of the option contract /// @param _from Address on behalf of which the withdraw call is made (Which will receive the withdrawn funds) /// @param _optionId The id of the option to withdraw funds from function withdrawFrom(address _from, uint256 _optionId) external { require(isApprovedForAll(_from, msg.sender), "Not approved"); _withdraw(_from, _optionId); } /// @notice Withdraw collateral from an option post expiration /// Funds in the option pool will be distributed pro rata of amount of options written by the address /// Ex : If after expiration date there has been 10 options written and there is 1 eth and 1000 DAI in the pool, /// Withdraw for each option will be worth 0.1 eth and 100 dai /// @dev Only callable by addresses which have unclaimed funds for options they wrote /// @param _optionId The id of the option to withdraw funds from function withdraw(uint256 _optionId) public { _withdraw(msg.sender, _optionId); } /// @notice Withdraw collateral from an option post expiration on behalf of an address. /// (Funds will be send to the address on behalf of which withdrawal is made) /// Funds in the option pool will be distributed pro rata of amount of options written by the address /// Ex : If after expiration date there has been 10 options written and there is 1 eth and 1000 DAI in the pool, /// Withdraw for each option will be worth 0.1 eth and 100 dai /// @dev Only callable by addresses which have unclaimed funds for options they wrote /// @param _from Address on behalf of which the withdraw call is made (Which will receive the withdrawn funds) /// @param _optionId The id of the option to withdraw funds from function _withdraw(address _from, uint256 _optionId) internal nonReentrant expired(_optionId) { require(nbWritten[_from][_optionId] > 0, "No option to claim"); OptionData storage data = optionData[_optionId]; uint256 nbTotal = uint256(data.supply).add(data.exercised).sub(data.claimsPreExp); // Amount of options user still has to claim funds from uint256 claimsUser = nbWritten[_from][_optionId]; // uint256 denominatorAmount = pools[_optionId].denominatorAmount.mul(claimsUser).div(nbTotal); uint256 tokenAmount = pools[_optionId].tokenAmount.mul(claimsUser).div(nbTotal); // pools[_optionId].denominatorAmount.sub(denominatorAmount); pools[_optionId].tokenAmount.sub(tokenAmount); data.claimsPostExp = uint256(data.claimsPostExp).add(claimsUser); delete nbWritten[_from][_optionId]; denominator.safeTransfer(_from, denominatorAmount); IERC20(optionData[_optionId].token).safeTransfer(_from, tokenAmount); emit Withdraw(_from, _optionId, data.token, claimsUser); } ////////////////////////////////////////////////// /// @notice Withdraw collateral from an option pre expiration on behalf of an address. /// (Funds will be send to the address on behalf of which withdrawal is made) /// Only opposite side of the collateral will be allocated when withdrawing pre expiration /// If writer deposited WETH for a WETH/DAI call, he will only receive the strike amount in DAI from a pre-expiration withdrawal, /// while doing a withdrawal post expiration would make him receive pro rata of funds left in the option pool at the expiration, /// (Which might be both WETH and DAI if not all options have been exercised) /// /// @dev Requires approval of the option contract /// Only callable by addresses which have unclaimed funds for options they wrote /// This also requires options to have been exercised and not claimed /// Ex : If a total of 10 options have been written (2 from Alice and 8 from Bob) and 3 options have been exercise : /// - Alice will be allowed to call withdrawPreExpiration for her 2 options written /// - Bob will only be allowed to call withdrawPreExpiration for 3 options he wrote /// - If Alice call first withdrawPreExpiration for her 2 options, /// there will be only 1 unclaimed exercised options that Bob will be allowed to withdrawPreExpiration /// /// @param _from Address on behalf of which the withdrawPreExpiration call is made (Which will receive the withdrawn funds) /// @param _optionId The id of the option to withdraw funds from /// @param _amount The amount of options for which withdrawPreExpiration function withdrawPreExpirationFrom(address _from, uint256 _optionId, uint256 _amount) external { require(isApprovedForAll(_from, msg.sender), "Not approved"); _withdrawPreExpiration(_from, _optionId, _amount); } /// @notice Withdraw collateral from an option pre expiration /// (Funds will be send to the address on behalf of which withdrawal is made) /// Only opposite side of the collateral will be allocated when withdrawing pre expiration /// If writer deposited WETH for a WETH/DAI call, he will only receive the strike amount in DAI from a pre-expiration withdrawal, /// while doing a withdrawal post expiration would make him receive pro rata of funds left in the option pool at the expiration, /// (Which might be both WETH and DAI if not all options have been exercised) /// /// @dev Only callable by addresses which have unclaimed funds for options they wrote /// This also requires options to have been exercised and not claimed /// Ex : If a total of 10 options have been written (2 from Alice and 8 from Bob) and 3 options have been exercise : /// - Alice will be allowed to call withdrawPreExpiration for her 2 options written /// - Bob will only be allowed to call withdrawPreExpiration for 3 options he wrote /// - If Alice call first withdrawPreExpiration for her 2 options, /// there will be only 1 unclaimed exercised options that Bob will be allowed to withdrawPreExpiration /// /// @param _optionId The id of the option to exercise /// @param _amount The amount of options for which withdrawPreExpiration function withdrawPreExpiration(uint256 _optionId, uint256 _amount) public { _withdrawPreExpiration(msg.sender, _optionId, _amount); } /// @notice Withdraw collateral from an option pre expiration on behalf of an address. /// (Funds will be send to the address on behalf of which withdrawal is made) /// Only opposite side of the collateral will be allocated when withdrawing pre expiration /// If writer deposited WETH for a WETH/DAI call, he will only receive the strike amount in DAI from a pre-expiration withdrawal, /// while doing a withdrawal post expiration would make him receive pro rata of funds left in the option pool at the expiration, /// (Which might be both WETH and DAI if not all options have been exercised) /// /// @dev Only callable by addresses which have unclaimed funds for options they wrote /// This also requires options to have been exercised and not claimed /// Ex : If a total of 10 options have been written (2 from Alice and 8 from Bob) and 3 options have been exercise : /// - Alice will be allowed to call withdrawPreExpiration for her 2 options written /// - Bob will only be allowed to call withdrawPreExpiration for 3 options he wrote /// - If Alice call first withdrawPreExpiration for her 2 options, /// there will be only 1 unclaimed exercised options that Bob will be allowed to withdrawPreExpiration /// /// @param _from Address on behalf of which the withdrawPreExpiration call is made (Which will receive the withdrawn funds) /// @param _optionId The id of the option to withdraw funds from /// @param _amount The amount of options for which withdrawPreExpiration function _withdrawPreExpiration(address _from, uint256 _optionId, uint256 _amount) internal nonReentrant notExpired(_optionId) { require(_amount > 0, "Amount <= 0"); // Amount of options user still has to claim funds from uint256 claimsUser = nbWritten[_from][_optionId]; require(claimsUser >= _amount, "Not enough claims"); OptionData storage data = optionData[_optionId]; uint256 nbClaimable = uint256(data.exercised).sub(data.claimsPreExp); require(nbClaimable >= _amount, "Not enough claimable"); // nbWritten[_from][_optionId] = nbWritten[_from][_optionId].sub(_amount); data.claimsPreExp = uint256(data.claimsPreExp).add(_amount); if (data.isCall) { uint256 amount = _amount.mul(data.strikePrice).div(10**data.decimals); pools[_optionId].denominatorAmount = pools[_optionId].denominatorAmount.sub(amount); denominator.safeTransfer(_from, amount); } else { pools[_optionId].tokenAmount = pools[_optionId].tokenAmount.sub(_amount); IERC20(data.token).safeTransfer(_from, _amount); } } ////////////////////////////////////////////////// /// @notice Flash exercise an option on behalf of an address /// This is usable on options in the money, in order to use a portion of the option collateral /// to swap a portion of it to the token required to exercise the option and pay protocol fees, /// and send the profit to the address exercising. /// This allows any option in the money to be exercised without the need of owning the token needed to exercise /// @dev Requires approval of the option contract /// @param _from Address on behalf of which the flash exercise is made (Which will receive the profit) /// @param _optionId The id of the option to flash exercise /// @param _amount Amount of option to flash exercise /// @param _referrer Referrer /// @param _router The UniswapRouter used to perform the swap (Needs to be a whitelisted router) /// @param _amountInMax Max amount of collateral token to use for the swap, for the tx to not be reverted /// @param _path Path used for the routing of the swap function flashExerciseOptionFrom(address _from, uint256 _optionId, uint256 _amount, address _referrer, IUniswapV2Router02 _router, uint256 _amountInMax, address[] memory _path) external { require(isApprovedForAll(_from, msg.sender), "Not approved"); _flashExerciseOption(_from, _optionId, _amount, _referrer, _router, _amountInMax, _path); } /// @notice Flash exercise an option /// This is usable on options in the money, in order to use a portion of the option collateral /// to swap a portion of it to the token required to exercise the option and pay protocol fees, /// and send the profit to the address exercising. /// This allows any option in the money to be exercised without the need of owning the token needed to exercise /// @param _optionId The id of the option to flash exercise /// @param _amount Amount of option to flash exercise /// @param _referrer Referrer /// @param _router The UniswapRouter used to perform the swap (Needs to be a whitelisted router) /// @param _amountInMax Max amount of collateral token to use for the swap, for the tx to not be reverted /// @param _path Path used for the routing of the swap function flashExerciseOption(uint256 _optionId, uint256 _amount, address _referrer, IUniswapV2Router02 _router, uint256 _amountInMax, address[] memory _path) external { _flashExerciseOption(msg.sender, _optionId, _amount, _referrer, _router, _amountInMax, _path); } /// @notice Flash exercise an option on behalf of an address /// This is usable on options in the money, in order to use a portion of the option collateral /// to swap a portion of it to the token required to exercise the option and pay protocol fees, /// and send the profit to the address exercising. /// This allows any option in the money to be exercised without the need of owning the token needed to exercise /// @dev Requires approval of the option contract /// @param _from Address on behalf of which the flash exercise is made (Which will receive the profit) /// @param _optionId The id of the option to flash exercise /// @param _amount Amount of option to flash exercise /// @param _referrer Referrer /// @param _router The UniswapRouter used to perform the swap (Needs to be a whitelisted router) /// @param _amountInMax Max amount of collateral token to use for the swap, for the tx to not be reverted /// @param _path Path used for the routing of the swap function _flashExerciseOption(address _from, uint256 _optionId, uint256 _amount, address _referrer, IUniswapV2Router02 _router, uint256 _amountInMax, address[] memory _path) internal nonReentrant { require(_amount > 0, "Amount <= 0"); burn(_from, _optionId, _amount); optionData[_optionId].exercised = uint256(optionData[_optionId].exercised).add(_amount); // Set referrer or get current if one already exists _referrer = _trySetReferrer(_from, _referrer); QuoteExercise memory quote = getExerciseQuote(_from, optionData[_optionId], _amount, _referrer, optionData[_optionId].decimals); IERC20 tokenErc20 = IERC20(optionData[_optionId].token); uint256 tokenAmountRequired = tokenErc20.balanceOf(address(this)); uint256 denominatorAmountRequired = denominator.balanceOf(address(this)); if (optionData[_optionId].isCall) { pools[_optionId].tokenAmount = pools[_optionId].tokenAmount.sub(quote.output); pools[_optionId].denominatorAmount = pools[_optionId].denominatorAmount.add(quote.input); } else { pools[_optionId].denominatorAmount = pools[_optionId].denominatorAmount.sub(quote.output); pools[_optionId].tokenAmount = pools[_optionId].tokenAmount.add(quote.input); } // if (quote.output < _amountInMax) { _amountInMax = quote.output; } // Swap enough denominator to tokenErc20 to pay fee + strike price uint256 tokenAmountUsed = _swap(_router, quote.outputToken, quote.inputToken, quote.input.add(quote.fee).add(quote.feeReferrer), _amountInMax, _path)[0]; // Pay fees _payFees(address(this), IERC20(quote.inputToken), _referrer, quote.fee, quote.feeReferrer, quote.inputDecimals); uint256 profit = quote.output.sub(tokenAmountUsed); // Send profit to sender IERC20(quote.outputToken).safeTransfer(_from, profit); // if (optionData[_optionId].isCall) { denominatorAmountRequired = denominatorAmountRequired.add(quote.input); tokenAmountRequired = tokenAmountRequired.sub(quote.output); } else { denominatorAmountRequired = denominatorAmountRequired.sub(quote.output); tokenAmountRequired = tokenAmountRequired.add(quote.input); } require(denominator.balanceOf(address(this)) >= denominatorAmountRequired, "Wrong denom bal"); require(tokenErc20.balanceOf(address(this)) >= tokenAmountRequired, "Wrong token bal"); emit OptionExercised(_from, _optionId, optionData[_optionId].token, _amount); } ////////////////////////////////////////////////// /// @notice Flash loan collaterals sitting in this contract /// Loaned amount + fee must be repaid by the end of the transaction for the transaction to not be reverted /// @param _tokenAddress Token to flashLoan /// @param _amount Amount to flashLoan /// @param _receiver Receiver of the flashLoan function flashLoan(address _tokenAddress, uint256 _amount, IFlashLoanReceiver _receiver) public nonReentrant { IERC20 _token = IERC20(_tokenAddress); uint256 startBalance = _token.balanceOf(address(this)); _token.safeTransfer(address(_receiver), _amount); (uint256 fee,) = feeCalculator.getFeeAmounts(msg.sender, false, _amount, IFeeCalculator.FeeType.FlashLoan); _receiver.execute(_tokenAddress, _amount, _amount.add(fee)); uint256 endBalance = _token.balanceOf(address(this)); uint256 endBalanceRequired = startBalance.add(fee); require(endBalance >= endBalanceRequired, "Failed to pay back"); _token.safeTransfer(feeRecipient, endBalance.sub(startBalance)); endBalance = _token.balanceOf(address(this)); require(endBalance >= startBalance, "Failed to pay back"); } ////////////////////////////////////////////////// ////////////// // Internal // ////////////// /// @notice Mint ERC1155 representing the option /// @dev Requires option to not be expired /// @param _account Address for which ERC1155 is minted /// @param _amount Amount minted function mint(address _account, uint256 _id, uint256 _amount) internal notExpired(_id) { OptionData storage data = optionData[_id]; _mint(_account, _id, _amount, ""); data.supply = uint256(data.supply).add(_amount); } /// @notice Burn ERC1155 representing the option /// @param _account Address from which ERC1155 is burnt /// @param _amount Amount burnt function burn(address _account, uint256 _id, uint256 _amount) internal notExpired(_id) { OptionData storage data = optionData[_id]; data.supply = uint256(data.supply).sub(_amount); _burn(_account, _id, _amount); } /// @notice Utility function to check if a value is inside an array /// @param _value The value to look for /// @param _array The array to check /// @return Whether the value is in the array or not function _isInArray(address _value, address[] memory _array) internal pure returns(bool) { uint256 length = _array.length; for (uint256 i = 0; i < length; ++i) { if (_array[i] == _value) { return true; } } return false; } /// @notice Pay protocol fees /// @param _from Address paying protocol fees /// @param _token The token in which protocol fees are paid /// @param _referrer The referrer of _from /// @param _fee Protocol fee to pay to feeRecipient /// @param _feeReferrer Fee to pay to referrer /// @param _decimals Token decimals function _payFees(address _from, IERC20 _token, address _referrer, uint256 _fee, uint256 _feeReferrer, uint8 _decimals) internal { if (_fee > 0) { // For flash exercise if (_from == address(this)) { _token.safeTransfer(feeRecipient, _fee); } else { _token.safeTransferFrom(_from, feeRecipient, _fee); } } if (_feeReferrer > 0) { // For flash exercise if (_from == address(this)) { _token.safeTransfer(_referrer, _feeReferrer); } else { _token.safeTransferFrom(_from, _referrer, _feeReferrer); } } // If uPremia rewards are enabled if (address(uPremia) != address(0)) { uint256 totalFee = _fee.add(_feeReferrer); if (totalFee > 0) { uPremia.mintReward(_from, address(_token), totalFee, _decimals); } } emit FeePaid(_from, address(_token), _referrer, _fee, _feeReferrer); } /// @notice Try to set given referrer, returns current referrer if one already exists /// @param _user Address for which we try to set a referrer /// @param _referrer Potential referrer /// @return Actual referrer (Potential referrer, or actual referrer if one already exists) function _trySetReferrer(address _user, address _referrer) internal returns(address) { if (address(premiaReferral) != address(0)) { _referrer = premiaReferral.trySetReferrer(_user, _referrer); } else { _referrer = address(0); } return _referrer; } /// @notice Token swap (Used for flashExercise) /// @param _router The UniswapRouter contract to use to perform the swap (Must be whitelisted) /// @param _from Input token for the swap /// @param _to Output token of the swap /// @param _amount Amount of output tokens we want /// @param _amountInMax Max amount of input token to spend for the tx to not revert /// @param _path Path used for the routing of the swap /// @return Swap amounts function _swap(IUniswapV2Router02 _router, address _from, address _to, uint256 _amount, uint256 _amountInMax, address[] memory _path) internal returns (uint256[] memory) { require(_isInArray(address(_router), whitelistedUniswapRouters), "Router not whitelisted"); IERC20(_from).approve(address(_router), _amountInMax); uint256[] memory amounts = _router.swapTokensForExactTokens( _amount, _amountInMax, _path, address(this), block.timestamp.add(60) ); IERC20(_from).approve(address(_router), 0); return amounts; } /// @notice Check if option settings are valid (Reverts if not valid) /// @param _token Token for which option this /// @param _strikePrice Strike price of the option /// @param _expiration timestamp of the option function _preCheckOptionIdCreate(address _token, uint256 _strikePrice, uint256 _expiration) internal view { require(tokenStrikeIncrement[_token] != 0, "Token not supported"); require(_strikePrice > 0, "Strike <= 0"); require(_strikePrice % tokenStrikeIncrement[_token] == 0, "Wrong strike incr"); require(_expiration > block.timestamp, "Exp passed"); require(_expiration.sub(block.timestamp) <= maxExpiration, "Exp > 1 yr"); require(_expiration % _expirationIncrement == _baseExpiration, "Wrong exp incr"); } }
// SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; import "./IERC1155.sol"; import "./IERC1155MetadataURI.sol"; import "./IERC1155Receiver.sol"; import "../../GSN/Context.sol"; import "../../introspection/ERC165.sol"; import "../../math/SafeMath.sol"; import "../../utils/Address.sol"; /** * * @dev Implementation of the basic standard multi-token. * See https://eips.ethereum.org/EIPS/eip-1155 * Originally based on code by Enjin: https://github.com/enjin/erc-1155 * * _Available since v3.1._ */ contract ERC1155 is Context, ERC165, IERC1155, IERC1155MetadataURI { using SafeMath for uint256; using Address for address; // Mapping from token ID to account balances mapping (uint256 => mapping(address => uint256)) private _balances; // Mapping from account to operator approvals mapping (address => mapping(address => bool)) private _operatorApprovals; // Used as the URI for all token types by relying on ID substitution, e.g. https://token-cdn-domain/{id}.json string private _uri; /* * bytes4(keccak256('balanceOf(address,uint256)')) == 0x00fdd58e * bytes4(keccak256('balanceOfBatch(address[],uint256[])')) == 0x4e1273f4 * bytes4(keccak256('setApprovalForAll(address,bool)')) == 0xa22cb465 * bytes4(keccak256('isApprovedForAll(address,address)')) == 0xe985e9c5 * bytes4(keccak256('safeTransferFrom(address,address,uint256,uint256,bytes)')) == 0xf242432a * bytes4(keccak256('safeBatchTransferFrom(address,address,uint256[],uint256[],bytes)')) == 0x2eb2c2d6 * * => 0x00fdd58e ^ 0x4e1273f4 ^ 0xa22cb465 ^ * 0xe985e9c5 ^ 0xf242432a ^ 0x2eb2c2d6 == 0xd9b67a26 */ bytes4 private constant _INTERFACE_ID_ERC1155 = 0xd9b67a26; /* * bytes4(keccak256('uri(uint256)')) == 0x0e89341c */ bytes4 private constant _INTERFACE_ID_ERC1155_METADATA_URI = 0x0e89341c; /** * @dev See {_setURI}. */ constructor (string memory uri_) public { _setURI(uri_); // register the supported interfaces to conform to ERC1155 via ERC165 _registerInterface(_INTERFACE_ID_ERC1155); // register the supported interfaces to conform to ERC1155MetadataURI via ERC165 _registerInterface(_INTERFACE_ID_ERC1155_METADATA_URI); } /** * @dev See {IERC1155MetadataURI-uri}. * * This implementation returns the same URI for *all* token types. It relies * on the token type ID substitution mechanism * https://eips.ethereum.org/EIPS/eip-1155#metadata[defined in the EIP]. * * Clients calling this function must replace the `\{id\}` substring with the * actual token type ID. */ function uri(uint256) external view override returns (string memory) { return _uri; } /** * @dev See {IERC1155-balanceOf}. * * Requirements: * * - `account` cannot be the zero address. */ function balanceOf(address account, uint256 id) public view override returns (uint256) { require(account != address(0), "ERC1155: balance query for the zero address"); return _balances[id][account]; } /** * @dev See {IERC1155-balanceOfBatch}. * * Requirements: * * - `accounts` and `ids` must have the same length. */ function balanceOfBatch( address[] memory accounts, uint256[] memory ids ) public view override returns (uint256[] memory) { require(accounts.length == ids.length, "ERC1155: accounts and ids length mismatch"); uint256[] memory batchBalances = new uint256[](accounts.length); for (uint256 i = 0; i < accounts.length; ++i) { require(accounts[i] != address(0), "ERC1155: batch balance query for the zero address"); batchBalances[i] = _balances[ids[i]][accounts[i]]; } return batchBalances; } /** * @dev See {IERC1155-setApprovalForAll}. */ function setApprovalForAll(address operator, bool approved) public virtual override { require(_msgSender() != operator, "ERC1155: setting approval status for self"); _operatorApprovals[_msgSender()][operator] = approved; emit ApprovalForAll(_msgSender(), operator, approved); } /** * @dev See {IERC1155-isApprovedForAll}. */ function isApprovedForAll(address account, address operator) public view override returns (bool) { return _operatorApprovals[account][operator]; } /** * @dev See {IERC1155-safeTransferFrom}. */ function safeTransferFrom( address from, address to, uint256 id, uint256 amount, bytes memory data ) public virtual override { require(to != address(0), "ERC1155: transfer to the zero address"); require( from == _msgSender() || isApprovedForAll(from, _msgSender()), "ERC1155: caller is not owner nor approved" ); address operator = _msgSender(); _beforeTokenTransfer(operator, from, to, _asSingletonArray(id), _asSingletonArray(amount), data); _balances[id][from] = _balances[id][from].sub(amount, "ERC1155: insufficient balance for transfer"); _balances[id][to] = _balances[id][to].add(amount); emit TransferSingle(operator, from, to, id, amount); _doSafeTransferAcceptanceCheck(operator, from, to, id, amount, data); } /** * @dev See {IERC1155-safeBatchTransferFrom}. */ function safeBatchTransferFrom( address from, address to, uint256[] memory ids, uint256[] memory amounts, bytes memory data ) public virtual override { require(ids.length == amounts.length, "ERC1155: ids and amounts length mismatch"); require(to != address(0), "ERC1155: transfer to the zero address"); require( from == _msgSender() || isApprovedForAll(from, _msgSender()), "ERC1155: transfer caller is not owner nor approved" ); address operator = _msgSender(); _beforeTokenTransfer(operator, from, to, ids, amounts, data); for (uint256 i = 0; i < ids.length; ++i) { uint256 id = ids[i]; uint256 amount = amounts[i]; _balances[id][from] = _balances[id][from].sub( amount, "ERC1155: insufficient balance for transfer" ); _balances[id][to] = _balances[id][to].add(amount); } emit TransferBatch(operator, from, to, ids, amounts); _doSafeBatchTransferAcceptanceCheck(operator, from, to, ids, amounts, data); } /** * @dev Sets a new URI for all token types, by relying on the token type ID * substitution mechanism * https://eips.ethereum.org/EIPS/eip-1155#metadata[defined in the EIP]. * * By this mechanism, any occurrence of the `\{id\}` substring in either the * URI or any of the amounts in the JSON file at said URI will be replaced by * clients with the token type ID. * * For example, the `https://token-cdn-domain/\{id\}.json` URI would be * interpreted by clients as * `https://token-cdn-domain/000000000000000000000000000000000000000000000000000000000004cce0.json` * for token type ID 0x4cce0. * * See {uri}. * * Because these URIs cannot be meaningfully represented by the {URI} event, * this function emits no events. */ function _setURI(string memory newuri) internal virtual { _uri = newuri; } /** * @dev Creates `amount` tokens of token type `id`, and assigns them to `account`. * * Emits a {TransferSingle} event. * * Requirements: * * - `account` cannot be the zero address. * - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155Received} and return the * acceptance magic value. */ function _mint(address account, uint256 id, uint256 amount, bytes memory data) internal virtual { require(account != address(0), "ERC1155: mint to the zero address"); address operator = _msgSender(); _beforeTokenTransfer(operator, address(0), account, _asSingletonArray(id), _asSingletonArray(amount), data); _balances[id][account] = _balances[id][account].add(amount); emit TransferSingle(operator, address(0), account, id, amount); _doSafeTransferAcceptanceCheck(operator, address(0), account, id, amount, data); } /** * @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {_mint}. * * Requirements: * * - `ids` and `amounts` must have the same length. * - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155BatchReceived} and return the * acceptance magic value. */ function _mintBatch(address to, uint256[] memory ids, uint256[] memory amounts, bytes memory data) internal virtual { require(to != address(0), "ERC1155: mint to the zero address"); require(ids.length == amounts.length, "ERC1155: ids and amounts length mismatch"); address operator = _msgSender(); _beforeTokenTransfer(operator, address(0), to, ids, amounts, data); for (uint i = 0; i < ids.length; i++) { _balances[ids[i]][to] = amounts[i].add(_balances[ids[i]][to]); } emit TransferBatch(operator, address(0), to, ids, amounts); _doSafeBatchTransferAcceptanceCheck(operator, address(0), to, ids, amounts, data); } /** * @dev Destroys `amount` tokens of token type `id` from `account` * * Requirements: * * - `account` cannot be the zero address. * - `account` must have at least `amount` tokens of token type `id`. */ function _burn(address account, uint256 id, uint256 amount) internal virtual { require(account != address(0), "ERC1155: burn from the zero address"); address operator = _msgSender(); _beforeTokenTransfer(operator, account, address(0), _asSingletonArray(id), _asSingletonArray(amount), ""); _balances[id][account] = _balances[id][account].sub( amount, "ERC1155: burn amount exceeds balance" ); emit TransferSingle(operator, account, address(0), id, amount); } /** * @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {_burn}. * * Requirements: * * - `ids` and `amounts` must have the same length. */ function _burnBatch(address account, uint256[] memory ids, uint256[] memory amounts) internal virtual { require(account != address(0), "ERC1155: burn from the zero address"); require(ids.length == amounts.length, "ERC1155: ids and amounts length mismatch"); address operator = _msgSender(); _beforeTokenTransfer(operator, account, address(0), ids, amounts, ""); for (uint i = 0; i < ids.length; i++) { _balances[ids[i]][account] = _balances[ids[i]][account].sub( amounts[i], "ERC1155: burn amount exceeds balance" ); } emit TransferBatch(operator, account, address(0), ids, amounts); } /** * @dev Hook that is called before any token transfer. This includes minting * and burning, as well as batched variants. * * The same hook is called on both single and batched variants. For single * transfers, the length of the `id` and `amount` arrays will be 1. * * Calling conditions (for each `id` and `amount` pair): * * - When `from` and `to` are both non-zero, `amount` of ``from``'s tokens * of token type `id` will be transferred to `to`. * - When `from` is zero, `amount` tokens of token type `id` will be minted * for `to`. * - when `to` is zero, `amount` of ``from``'s tokens of token type `id` * will be burned. * - `from` and `to` are never both zero. * - `ids` and `amounts` have the same, non-zero length. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _beforeTokenTransfer( address operator, address from, address to, uint256[] memory ids, uint256[] memory amounts, bytes memory data ) internal virtual { } function _doSafeTransferAcceptanceCheck( address operator, address from, address to, uint256 id, uint256 amount, bytes memory data ) private { if (to.isContract()) { try IERC1155Receiver(to).onERC1155Received(operator, from, id, amount, data) returns (bytes4 response) { if (response != IERC1155Receiver(to).onERC1155Received.selector) { revert("ERC1155: ERC1155Receiver rejected tokens"); } } catch Error(string memory reason) { revert(reason); } catch { revert("ERC1155: transfer to non ERC1155Receiver implementer"); } } } function _doSafeBatchTransferAcceptanceCheck( address operator, address from, address to, uint256[] memory ids, uint256[] memory amounts, bytes memory data ) private { if (to.isContract()) { try IERC1155Receiver(to).onERC1155BatchReceived(operator, from, ids, amounts, data) returns (bytes4 response) { if (response != IERC1155Receiver(to).onERC1155BatchReceived.selector) { revert("ERC1155: ERC1155Receiver rejected tokens"); } } catch Error(string memory reason) { revert(reason); } catch { revert("ERC1155: transfer to non ERC1155Receiver implementer"); } } } function _asSingletonArray(uint256 element) private pure returns (uint256[] memory) { uint256[] memory array = new uint256[](1); array[0] = element; return array; } }
// SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; import "./IERC20.sol"; import "../../math/SafeMath.sol"; import "../../utils/Address.sol"; /** * @title SafeERC20 * @dev Wrappers around ERC20 operations that throw on failure (when the token * contract returns false). Tokens that return no value (and instead revert or * throw on failure) are also supported, non-reverting calls are assumed to be * successful. * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract, * which allows you to call the safe operations as `token.safeTransfer(...)`, etc. */ library SafeERC20 { using SafeMath for uint256; using Address for address; function safeTransfer(IERC20 token, address to, uint256 value) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value)); } function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value)); } /** * @dev Deprecated. This function has issues similar to the ones found in * {IERC20-approve}, and its usage is discouraged. * * Whenever possible, use {safeIncreaseAllowance} and * {safeDecreaseAllowance} instead. */ function safeApprove(IERC20 token, address spender, uint256 value) internal { // safeApprove should only be called when setting an initial allowance, // or when resetting it to zero. To increase and decrease it, use // 'safeIncreaseAllowance' and 'safeDecreaseAllowance' // solhint-disable-next-line max-line-length require((value == 0) || (token.allowance(address(this), spender) == 0), "SafeERC20: approve from non-zero to non-zero allowance" ); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value)); } function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 newAllowance = token.allowance(address(this), spender).add(value); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 newAllowance = token.allowance(address(this), spender).sub(value, "SafeERC20: decreased allowance below zero"); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } /** * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement * on the return value: the return value is optional (but if data is returned, it must not be false). * @param token The token targeted by the call. * @param data The call data (encoded using abi.encode or one of its variants). */ function _callOptionalReturn(IERC20 token, bytes memory data) private { // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since // we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that // the target address contains contract code and also asserts for success in the low-level call. bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed"); if (returndata.length > 0) { // Return data is optional // solhint-disable-next-line max-line-length require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed"); } } }
// SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; import "../GSN/Context.sol"; /** * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * By default, the owner account will be the one that deploys the contract. This * can later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. */ abstract contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the deployer as the initial owner. */ constructor () internal { address msgSender = _msgSender(); _owner = msgSender; emit OwnershipTransferred(address(0), msgSender); } /** * @dev Returns the address of the current owner. */ function owner() public view returns (address) { return _owner; } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(_owner == _msgSender(), "Ownable: caller is not the owner"); _; } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. */ function renounceOwnership() public virtual onlyOwner { emit OwnershipTransferred(_owner, address(0)); _owner = address(0); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. */ function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); emit OwnershipTransferred(_owner, newOwner); _owner = newOwner; } }
// SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; /** * @dev Contract module that helps prevent reentrant calls to a function. * * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier * available, which can be applied to functions to make sure there are no nested * (reentrant) calls to them. * * Note that because there is a single `nonReentrant` guard, functions marked as * `nonReentrant` may not call one another. This can be worked around by making * those functions `private`, and then adding `external` `nonReentrant` entry * points to them. * * TIP: If you would like to learn more about reentrancy and alternative ways * to protect against it, check out our blog post * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul]. */ abstract contract ReentrancyGuard { // Booleans are more expensive than uint256 or any type that takes up a full // word because each write operation emits an extra SLOAD to first read the // slot's contents, replace the bits taken up by the boolean, and then write // back. This is the compiler's defense against contract upgrades and // pointer aliasing, and it cannot be disabled. // The values being non-zero value makes deployment a bit more expensive, // but in exchange the refund on every call to nonReentrant will be lower in // amount. Since refunds are capped to a percentage of the total // transaction's gas, it is best to keep them low in cases like this one, to // increase the likelihood of the full refund coming into effect. uint256 private constant _NOT_ENTERED = 1; uint256 private constant _ENTERED = 2; uint256 private _status; constructor () internal { _status = _NOT_ENTERED; } /** * @dev Prevents a contract from calling itself, directly or indirectly. * Calling a `nonReentrant` function from another `nonReentrant` * function is not supported. It is possible to prevent this from happening * by making the `nonReentrant` function external, and make it call a * `private` function that does the actual work. */ modifier nonReentrant() { // On the first call to nonReentrant, _notEntered will be true require(_status != _ENTERED, "ReentrancyGuard: reentrant call"); // Any calls to nonReentrant after this point will fail _status = _ENTERED; _; // By storing the original value once again, a refund is triggered (see // https://eips.ethereum.org/EIPS/eip-2200) _status = _NOT_ENTERED; } }
// SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; /** * @dev Wrappers over Solidity's uintXX/intXX casting operators with added overflow * checks. * * Downcasting from uint256/int256 in Solidity does not revert on overflow. This can * easily result in undesired exploitation or bugs, since developers usually * assume that overflows raise errors. `SafeCast` restores this intuition by * reverting the transaction when such 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. * * Can be combined with {SafeMath} and {SignedSafeMath} to extend it to smaller types, by performing * all math on `uint256` and `int256` and then downcasting. */ library SafeCast { /** * @dev Returns the downcasted uint128 from uint256, reverting on * overflow (when the input is greater than largest uint128). * * Counterpart to Solidity's `uint128` operator. * * Requirements: * * - input must fit into 128 bits */ function toUint128(uint256 value) internal pure returns (uint128) { require(value < 2**128, "SafeCast: value doesn\'t fit in 128 bits"); return uint128(value); } /** * @dev Returns the downcasted uint64 from uint256, reverting on * overflow (when the input is greater than largest uint64). * * Counterpart to Solidity's `uint64` operator. * * Requirements: * * - input must fit into 64 bits */ function toUint64(uint256 value) internal pure returns (uint64) { require(value < 2**64, "SafeCast: value doesn\'t fit in 64 bits"); return uint64(value); } /** * @dev Returns the downcasted uint32 from uint256, reverting on * overflow (when the input is greater than largest uint32). * * Counterpart to Solidity's `uint32` operator. * * Requirements: * * - input must fit into 32 bits */ function toUint32(uint256 value) internal pure returns (uint32) { require(value < 2**32, "SafeCast: value doesn\'t fit in 32 bits"); return uint32(value); } /** * @dev Returns the downcasted uint16 from uint256, reverting on * overflow (when the input is greater than largest uint16). * * Counterpart to Solidity's `uint16` operator. * * Requirements: * * - input must fit into 16 bits */ function toUint16(uint256 value) internal pure returns (uint16) { require(value < 2**16, "SafeCast: value doesn\'t fit in 16 bits"); return uint16(value); } /** * @dev Returns the downcasted uint8 from uint256, reverting on * overflow (when the input is greater than largest uint8). * * Counterpart to Solidity's `uint8` operator. * * Requirements: * * - input must fit into 8 bits. */ function toUint8(uint256 value) internal pure returns (uint8) { require(value < 2**8, "SafeCast: value doesn\'t fit in 8 bits"); return uint8(value); } /** * @dev Converts a signed int256 into an unsigned uint256. * * Requirements: * * - input must be greater than or equal to 0. */ function toUint256(int256 value) internal pure returns (uint256) { require(value >= 0, "SafeCast: value must be positive"); return uint256(value); } /** * @dev Returns the downcasted int128 from int256, reverting on * overflow (when the input is less than smallest int128 or * greater than largest int128). * * Counterpart to Solidity's `int128` operator. * * Requirements: * * - input must fit into 128 bits * * _Available since v3.1._ */ function toInt128(int256 value) internal pure returns (int128) { require(value >= -2**127 && value < 2**127, "SafeCast: value doesn\'t fit in 128 bits"); return int128(value); } /** * @dev Returns the downcasted int64 from int256, reverting on * overflow (when the input is less than smallest int64 or * greater than largest int64). * * Counterpart to Solidity's `int64` operator. * * Requirements: * * - input must fit into 64 bits * * _Available since v3.1._ */ function toInt64(int256 value) internal pure returns (int64) { require(value >= -2**63 && value < 2**63, "SafeCast: value doesn\'t fit in 64 bits"); return int64(value); } /** * @dev Returns the downcasted int32 from int256, reverting on * overflow (when the input is less than smallest int32 or * greater than largest int32). * * Counterpart to Solidity's `int32` operator. * * Requirements: * * - input must fit into 32 bits * * _Available since v3.1._ */ function toInt32(int256 value) internal pure returns (int32) { require(value >= -2**31 && value < 2**31, "SafeCast: value doesn\'t fit in 32 bits"); return int32(value); } /** * @dev Returns the downcasted int16 from int256, reverting on * overflow (when the input is less than smallest int16 or * greater than largest int16). * * Counterpart to Solidity's `int16` operator. * * Requirements: * * - input must fit into 16 bits * * _Available since v3.1._ */ function toInt16(int256 value) internal pure returns (int16) { require(value >= -2**15 && value < 2**15, "SafeCast: value doesn\'t fit in 16 bits"); return int16(value); } /** * @dev Returns the downcasted int8 from int256, reverting on * overflow (when the input is less than smallest int8 or * greater than largest int8). * * Counterpart to Solidity's `int8` operator. * * Requirements: * * - input must fit into 8 bits. * * _Available since v3.1._ */ function toInt8(int256 value) internal pure returns (int8) { require(value >= -2**7 && value < 2**7, "SafeCast: value doesn\'t fit in 8 bits"); return int8(value); } /** * @dev Converts an unsigned uint256 into a signed int256. * * Requirements: * * - input must be less than or equal to maxInt256. */ function toInt256(uint256 value) internal pure returns (int256) { require(value < 2**255, "SafeCast: value doesn't fit in an int256"); return int256(value); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.7.0; import '@openzeppelin/contracts/token/ERC20/IERC20.sol'; import '@openzeppelin/contracts/token/ERC20/ERC20.sol'; interface IERC20Extended is IERC20 { function decimals() external view returns (uint8); }
// SPDX-License-Identifier: MIT pragma solidity ^0.7.0; interface IFeeCalculator { enum FeeType {Write, Exercise, Maker, Taker, FlashLoan} function writeFee() external view returns(uint256); function exerciseFee() external view returns(uint256); function flashLoanFee() external view returns(uint256); function referrerFee() external view returns(uint256); function referredDiscount() external view returns(uint256); function makerFee() external view returns(uint256); function takerFee() external view returns(uint256); function getFee(address _user, bool _hasReferrer, FeeType _feeType) external view returns(uint256); function getFeeAmounts(address _user, bool _hasReferrer, uint256 _amount, FeeType _feeType) external view returns(uint256 _fee, uint256 _feeReferrer); function getFeeAmountsWithDiscount(address _user, bool _hasReferrer, uint256 _baseFee) external view returns(uint256 _fee, uint256 _feeReferrer); }
// SPDX-License-Identifier: MIT pragma solidity ^0.7.0; interface IFlashLoanReceiver { function execute(address _tokenAddress, uint256 _amount, uint256 _amountWithFee) external; }
// SPDX-License-Identifier: MIT pragma solidity ^0.7.0; interface IPremiaReferral { function referrals(address _referred) external view returns(address _referrer); function trySetReferrer(address _referred, address _potentialReferrer) external returns(address); }
// SPDX-License-Identifier: MIT pragma solidity ^0.7.0; import '@openzeppelin/contracts/token/ERC20/IERC20.sol'; interface IPremiaUncutErc20 is IERC20 { function getTokenPrice(address _token) external view returns(uint256); function mint(address _account, uint256 _amount) external; function mintReward(address _account, address _token, uint256 _feePaid, uint8 _decimals) external; }
pragma solidity >=0.6.2; import './IUniswapV2Router01.sol'; interface IUniswapV2Router02 is IUniswapV2Router01 { function removeLiquidityETHSupportingFeeOnTransferTokens( address token, uint liquidity, uint amountTokenMin, uint amountETHMin, address to, uint deadline ) external returns (uint amountETH); function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens( address token, uint liquidity, uint amountTokenMin, uint amountETHMin, address to, uint deadline, bool approveMax, uint8 v, bytes32 r, bytes32 s ) external returns (uint amountETH); function swapExactTokensForTokensSupportingFeeOnTransferTokens( uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline ) external; function swapExactETHForTokensSupportingFeeOnTransferTokens( uint amountOutMin, address[] calldata path, address to, uint deadline ) external payable; function swapExactTokensForETHSupportingFeeOnTransferTokens( uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline ) external; }
// SPDX-License-Identifier: MIT pragma solidity >=0.6.2 <0.8.0; import "../../introspection/IERC165.sol"; /** * @dev Required interface of an ERC1155 compliant contract, as defined in the * https://eips.ethereum.org/EIPS/eip-1155[EIP]. * * _Available since v3.1._ */ interface IERC1155 is IERC165 { /** * @dev Emitted when `value` tokens of token type `id` are transferred from `from` to `to` by `operator`. */ event TransferSingle(address indexed operator, address indexed from, address indexed to, uint256 id, uint256 value); /** * @dev Equivalent to multiple {TransferSingle} events, where `operator`, `from` and `to` are the same for all * transfers. */ event TransferBatch(address indexed operator, address indexed from, address indexed to, uint256[] ids, uint256[] values); /** * @dev Emitted when `account` grants or revokes permission to `operator` to transfer their tokens, according to * `approved`. */ event ApprovalForAll(address indexed account, address indexed operator, bool approved); /** * @dev Emitted when the URI for token type `id` changes to `value`, if it is a non-programmatic URI. * * If an {URI} event was emitted for `id`, the standard * https://eips.ethereum.org/EIPS/eip-1155#metadata-extensions[guarantees] that `value` will equal the value * returned by {IERC1155MetadataURI-uri}. */ event URI(string value, uint256 indexed id); /** * @dev Returns the amount of tokens of token type `id` owned by `account`. * * Requirements: * * - `account` cannot be the zero address. */ function balanceOf(address account, uint256 id) external view returns (uint256); /** * @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {balanceOf}. * * Requirements: * * - `accounts` and `ids` must have the same length. */ function balanceOfBatch(address[] calldata accounts, uint256[] calldata ids) external view returns (uint256[] memory); /** * @dev Grants or revokes permission to `operator` to transfer the caller's tokens, according to `approved`, * * Emits an {ApprovalForAll} event. * * Requirements: * * - `operator` cannot be the caller. */ function setApprovalForAll(address operator, bool approved) external; /** * @dev Returns true if `operator` is approved to transfer ``account``'s tokens. * * See {setApprovalForAll}. */ function isApprovedForAll(address account, address operator) external view returns (bool); /** * @dev Transfers `amount` tokens of token type `id` from `from` to `to`. * * Emits a {TransferSingle} event. * * Requirements: * * - `to` cannot be the zero address. * - If the caller is not `from`, it must be have been approved to spend ``from``'s tokens via {setApprovalForAll}. * - `from` must have a balance of tokens of type `id` of at least `amount`. * - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155Received} and return the * acceptance magic value. */ function safeTransferFrom(address from, address to, uint256 id, uint256 amount, bytes calldata data) external; /** * @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {safeTransferFrom}. * * Emits a {TransferBatch} event. * * Requirements: * * - `ids` and `amounts` must have the same length. * - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155BatchReceived} and return the * acceptance magic value. */ function safeBatchTransferFrom(address from, address to, uint256[] calldata ids, uint256[] calldata amounts, bytes calldata data) external; }
// SPDX-License-Identifier: MIT pragma solidity >=0.6.2 <0.8.0; import "./IERC1155.sol"; /** * @dev Interface of the optional ERC1155MetadataExtension interface, as defined * in the https://eips.ethereum.org/EIPS/eip-1155#metadata-extensions[EIP]. * * _Available since v3.1._ */ interface IERC1155MetadataURI is IERC1155 { /** * @dev Returns the URI for token type `id`. * * If the `\{id\}` substring is present in the URI, it must be replaced by * clients with the actual token type ID. */ function uri(uint256 id) external view returns (string memory); }
// SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; import "../../introspection/IERC165.sol"; /** * _Available since v3.1._ */ interface IERC1155Receiver is IERC165 { /** @dev Handles the receipt of a single ERC1155 token type. This function is called at the end of a `safeTransferFrom` after the balance has been updated. To accept the transfer, this must return `bytes4(keccak256("onERC1155Received(address,address,uint256,uint256,bytes)"))` (i.e. 0xf23a6e61, or its own function selector). @param operator The address which initiated the transfer (i.e. msg.sender) @param from The address which previously owned the token @param id The ID of the token being transferred @param value The amount of tokens being transferred @param data Additional data with no specified format @return `bytes4(keccak256("onERC1155Received(address,address,uint256,uint256,bytes)"))` if transfer is allowed */ function onERC1155Received( address operator, address from, uint256 id, uint256 value, bytes calldata data ) external returns(bytes4); /** @dev Handles the receipt of a multiple ERC1155 token types. This function is called at the end of a `safeBatchTransferFrom` after the balances have been updated. To accept the transfer(s), this must return `bytes4(keccak256("onERC1155BatchReceived(address,address,uint256[],uint256[],bytes)"))` (i.e. 0xbc197c81, or its own function selector). @param operator The address which initiated the batch transfer (i.e. msg.sender) @param from The address which previously owned the token @param ids An array containing ids of each token being transferred (order and length must match values array) @param values An array containing amounts of each token being transferred (order and length must match ids array) @param data Additional data with no specified format @return `bytes4(keccak256("onERC1155BatchReceived(address,address,uint256[],uint256[],bytes)"))` if transfer is allowed */ function onERC1155BatchReceived( address operator, address from, uint256[] calldata ids, uint256[] calldata values, bytes calldata data ) external returns(bytes4); }
// SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; /* * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with GSN meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address payable) { return msg.sender; } function _msgData() internal view virtual returns (bytes memory) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } }
// SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; import "./IERC165.sol"; /** * @dev Implementation of the {IERC165} interface. * * Contracts may inherit from this and call {_registerInterface} to declare * their support of an interface. */ abstract contract ERC165 is IERC165 { /* * bytes4(keccak256('supportsInterface(bytes4)')) == 0x01ffc9a7 */ bytes4 private constant _INTERFACE_ID_ERC165 = 0x01ffc9a7; /** * @dev Mapping of interface ids to whether or not it's supported. */ mapping(bytes4 => bool) private _supportedInterfaces; constructor () internal { // Derived contracts need only register support for their own interfaces, // we register support for ERC165 itself here _registerInterface(_INTERFACE_ID_ERC165); } /** * @dev See {IERC165-supportsInterface}. * * Time complexity O(1), guaranteed to always use less than 30 000 gas. */ function supportsInterface(bytes4 interfaceId) public view override returns (bool) { return _supportedInterfaces[interfaceId]; } /** * @dev Registers the contract as an implementer of the interface defined by * `interfaceId`. Support of the actual ERC165 interface is automatic and * registering its interface id is not required. * * See {IERC165-supportsInterface}. * * Requirements: * * - `interfaceId` cannot be the ERC165 invalid interface (`0xffffffff`). */ function _registerInterface(bytes4 interfaceId) internal virtual { require(interfaceId != 0xffffffff, "ERC165: invalid interface id"); _supportedInterfaces[interfaceId] = true; } }
// SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; /** * @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 subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b) internal pure returns (uint256) { return sub(a, b, "SafeMath: subtraction overflow"); } /** * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ 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 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) { 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; } }
// SPDX-License-Identifier: MIT pragma solidity >=0.6.2 <0.8.0; /** * @dev Collection of functions related to the address type */ library Address { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize, which returns 0 for contracts in // construction, since the code is only stored at the end of the // constructor execution. uint256 size; // solhint-disable-next-line no-inline-assembly assembly { size := extcodesize(account) } return size > 0; } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); // solhint-disable-next-line avoid-low-level-calls, avoid-call-value (bool success, ) = recipient.call{ value: amount }(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain`call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.call{ value: value }(data); return _verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data, string memory errorMessage) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.staticcall(data); return _verifyCallResult(success, returndata, errorMessage); } function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) { if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly // solhint-disable-next-line no-inline-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } }
// SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; /** * @dev Interface of the ERC165 standard, as defined in the * https://eips.ethereum.org/EIPS/eip-165[EIP]. * * Implementers can declare support of contract interfaces, which can then be * queried by others ({ERC165Checker}). * * For an implementation, see {ERC165}. */ interface IERC165 { /** * @dev Returns true if this contract implements the interface defined by * `interfaceId`. See the corresponding * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] * to learn more about how these ids are created. * * This function call must use less than 30 000 gas. */ function supportsInterface(bytes4 interfaceId) external view returns (bool); }
// SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20 { /** * @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address recipient, uint256 amount) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 amount) external returns (bool); /** * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); /** * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. */ event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. */ event Approval(address indexed owner, address indexed spender, uint256 value); }
// SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; import "../../GSN/Context.sol"; import "./IERC20.sol"; import "../../math/SafeMath.sol"; /** * @dev Implementation of the {IERC20} interface. * * This implementation is agnostic to the way tokens are created. This means * that a supply mechanism has to be added in a derived contract using {_mint}. * For a generic mechanism see {ERC20PresetMinterPauser}. * * TIP: For a detailed writeup see our guide * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How * to implement supply mechanisms]. * * We have followed general OpenZeppelin guidelines: functions revert instead * of returning `false` on failure. This behavior is nonetheless conventional * and does not conflict with the expectations of ERC20 applications. * * Additionally, an {Approval} event is emitted on calls to {transferFrom}. * This allows applications to reconstruct the allowance for all accounts just * by listening to said events. Other implementations of the EIP may not emit * these events, as it isn't required by the specification. * * Finally, the non-standard {decreaseAllowance} and {increaseAllowance} * functions have been added to mitigate the well-known issues around setting * allowances. See {IERC20-approve}. */ contract ERC20 is Context, IERC20 { using SafeMath for uint256; mapping (address => uint256) private _balances; mapping (address => mapping (address => uint256)) private _allowances; uint256 private _totalSupply; string private _name; string private _symbol; uint8 private _decimals; /** * @dev Sets the values for {name} and {symbol}, initializes {decimals} with * a default value of 18. * * To select a different value for {decimals}, use {_setupDecimals}. * * All three of these values are immutable: they can only be set once during * construction. */ constructor (string memory name_, string memory symbol_) public { _name = name_; _symbol = symbol_; _decimals = 18; } /** * @dev Returns the name of the token. */ function name() public view returns (string memory) { return _name; } /** * @dev Returns the symbol of the token, usually a shorter version of the * name. */ function symbol() public view returns (string memory) { return _symbol; } /** * @dev Returns the number of decimals used to get its user representation. * For example, if `decimals` equals `2`, a balance of `505` tokens should * be displayed to a user as `5,05` (`505 / 10 ** 2`). * * Tokens usually opt for a value of 18, imitating the relationship between * Ether and Wei. This is the value {ERC20} uses, unless {_setupDecimals} is * called. * * NOTE: This information is only used for _display_ purposes: it in * no way affects any of the arithmetic of the contract, including * {IERC20-balanceOf} and {IERC20-transfer}. */ function decimals() public view returns (uint8) { return _decimals; } /** * @dev See {IERC20-totalSupply}. */ function totalSupply() public view override returns (uint256) { return _totalSupply; } /** * @dev See {IERC20-balanceOf}. */ function balanceOf(address account) public view override returns (uint256) { return _balances[account]; } /** * @dev See {IERC20-transfer}. * * Requirements: * * - `recipient` cannot be the zero address. * - the caller must have a balance of at least `amount`. */ function transfer(address recipient, uint256 amount) public virtual override returns (bool) { _transfer(_msgSender(), recipient, amount); return true; } /** * @dev See {IERC20-allowance}. */ function allowance(address owner, address spender) public view virtual override returns (uint256) { return _allowances[owner][spender]; } /** * @dev See {IERC20-approve}. * * Requirements: * * - `spender` cannot be the zero address. */ function approve(address spender, uint256 amount) public virtual override returns (bool) { _approve(_msgSender(), spender, amount); return true; } /** * @dev See {IERC20-transferFrom}. * * Emits an {Approval} event indicating the updated allowance. This is not * required by the EIP. See the note at the beginning of {ERC20}. * * Requirements: * * - `sender` and `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. * - the caller must have allowance for ``sender``'s tokens of at least * `amount`. */ function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) { _transfer(sender, recipient, amount); _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance")); return true; } /** * @dev Atomically increases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. */ function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue)); return true; } /** * @dev Atomically decreases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. * - `spender` must have allowance for the caller of at least * `subtractedValue`. */ function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero")); return true; } /** * @dev Moves tokens `amount` from `sender` to `recipient`. * * This is internal function is equivalent to {transfer}, and can be used to * e.g. implement automatic token fees, slashing mechanisms, etc. * * Emits a {Transfer} event. * * Requirements: * * - `sender` cannot be the zero address. * - `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. */ function _transfer(address sender, address recipient, uint256 amount) internal virtual { require(sender != address(0), "ERC20: transfer from the zero address"); require(recipient != address(0), "ERC20: transfer to the zero address"); _beforeTokenTransfer(sender, recipient, amount); _balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance"); _balances[recipient] = _balances[recipient].add(amount); emit Transfer(sender, recipient, amount); } /** @dev Creates `amount` tokens and assigns them to `account`, increasing * the total supply. * * Emits a {Transfer} event with `from` set to the zero address. * * Requirements: * * - `to` cannot be the zero address. */ function _mint(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: mint to the zero address"); _beforeTokenTransfer(address(0), account, amount); _totalSupply = _totalSupply.add(amount); _balances[account] = _balances[account].add(amount); emit Transfer(address(0), account, amount); } /** * @dev Destroys `amount` tokens from `account`, reducing the * total supply. * * Emits a {Transfer} event with `to` set to the zero address. * * Requirements: * * - `account` cannot be the zero address. * - `account` must have at least `amount` tokens. */ function _burn(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: burn from the zero address"); _beforeTokenTransfer(account, address(0), amount); _balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance"); _totalSupply = _totalSupply.sub(amount); emit Transfer(account, address(0), amount); } /** * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens. * * This internal function is equivalent to `approve`, and can be used to * e.g. set automatic allowances for certain subsystems, etc. * * Emits an {Approval} event. * * Requirements: * * - `owner` cannot be the zero address. * - `spender` cannot be the zero address. */ function _approve(address owner, address spender, uint256 amount) internal virtual { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } /** * @dev Sets {decimals} to a value other than the default one of 18. * * WARNING: This function should only be called from the constructor. Most * applications that interact with token contracts will not expect * {decimals} to ever change, and may work incorrectly if it does. */ function _setupDecimals(uint8 decimals_) internal { _decimals = decimals_; } /** * @dev Hook that is called before any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens * will be to transferred to `to`. * - when `from` is zero, `amount` tokens will be minted for `to`. * - when `to` is zero, `amount` of ``from``'s tokens will be burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual { } }
pragma solidity >=0.6.2; interface IUniswapV2Router01 { function factory() external pure returns (address); function WETH() external pure returns (address); function addLiquidity( address tokenA, address tokenB, uint amountADesired, uint amountBDesired, uint amountAMin, uint amountBMin, address to, uint deadline ) external returns (uint amountA, uint amountB, uint liquidity); function addLiquidityETH( address token, uint amountTokenDesired, uint amountTokenMin, uint amountETHMin, address to, uint deadline ) external payable returns (uint amountToken, uint amountETH, uint liquidity); function removeLiquidity( address tokenA, address tokenB, uint liquidity, uint amountAMin, uint amountBMin, address to, uint deadline ) external returns (uint amountA, uint amountB); function removeLiquidityETH( address token, uint liquidity, uint amountTokenMin, uint amountETHMin, address to, uint deadline ) external returns (uint amountToken, uint amountETH); function removeLiquidityWithPermit( address tokenA, address tokenB, uint liquidity, uint amountAMin, uint amountBMin, address to, uint deadline, bool approveMax, uint8 v, bytes32 r, bytes32 s ) external returns (uint amountA, uint amountB); function removeLiquidityETHWithPermit( address token, uint liquidity, uint amountTokenMin, uint amountETHMin, address to, uint deadline, bool approveMax, uint8 v, bytes32 r, bytes32 s ) external returns (uint amountToken, uint amountETH); function swapExactTokensForTokens( uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline ) external returns (uint[] memory amounts); function swapTokensForExactTokens( uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline ) external returns (uint[] memory amounts); function swapExactETHForTokens(uint amountOutMin, address[] calldata path, address to, uint deadline) external payable returns (uint[] memory amounts); function swapTokensForExactETH(uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline) external returns (uint[] memory amounts); function swapExactTokensForETH(uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline) external returns (uint[] memory amounts); function swapETHForExactTokens(uint amountOut, address[] calldata path, address to, uint deadline) external payable returns (uint[] memory amounts); function quote(uint amountA, uint reserveA, uint reserveB) external pure returns (uint amountB); function getAmountOut(uint amountIn, uint reserveIn, uint reserveOut) external pure returns (uint amountOut); function getAmountIn(uint amountOut, uint reserveIn, uint reserveOut) external pure returns (uint amountIn); function getAmountsOut(uint amountIn, address[] calldata path) external view returns (uint[] memory amounts); function getAmountsIn(uint amountOut, address[] calldata path) external view returns (uint[] memory amounts); }
{ "optimizer": { "enabled": true, "runs": 50 }, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "abi" ] } }, "libraries": {} }
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- No Contract Security Audit Submitted- Submit Audit Here
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IPremiaReferral","name":"_premiaReferral","type":"address"},{"internalType":"address","name":"_feeRecipient","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"account","type":"address"},{"indexed":true,"internalType":"address","name":"operator","type":"address"},{"indexed":false,"internalType":"bool","name":"approved","type":"bool"}],"name":"ApprovalForAll","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":true,"internalType":"address","name":"token","type":"address"},{"indexed":true,"internalType":"address","name":"referrer","type":"address"},{"indexed":false,"internalType":"uint256","name":"feeProtocol","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"feeReferrer","type":"uint256"}],"name":"FeePaid","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"uint256","name":"optionId","type":"uint256"},{"indexed":true,"internalType":"address","name":"token","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"OptionCancelled","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":true,"internalType":"uint256","name":"optionId","type":"uint256"},{"indexed":true,"internalType":"address","name":"token","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"OptionExercised","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"uint256","name":"optionId","type":"uint256"},{"indexed":true,"internalType":"address","name":"token","type":"address"}],"name":"OptionIdCreated","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"uint256","name":"optionId","type":"uint256"},{"indexed":true,"internalType":"address","name":"token","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"OptionWritten","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"token","type":"address"},{"indexed":false,"internalType":"uint256","name":"strikePriceIncrement","type":"uint256"}],"name":"SetToken","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"operator","type":"address"},{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"uint256[]","name":"ids","type":"uint256[]"},{"indexed":false,"internalType":"uint256[]","name":"values","type":"uint256[]"}],"name":"TransferBatch","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"operator","type":"address"},{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"uint256","name":"id","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"TransferSingle","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"string","name":"value","type":"string"},{"indexed":true,"internalType":"uint256","name":"id","type":"uint256"}],"name":"URI","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":true,"internalType":"uint256","name":"optionId","type":"uint256"},{"indexed":true,"internalType":"address","name":"token","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Withdraw","type":"event"},{"inputs":[{"internalType":"address","name":"account","type":"address"},{"internalType":"uint256","name":"id","type":"uint256"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address[]","name":"accounts","type":"address[]"},{"internalType":"uint256[]","name":"ids","type":"uint256[]"}],"name":"balanceOfBatch","outputs":[{"internalType":"uint256[]","name":"","type":"uint256[]"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_optionId","type":"uint256"},{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"cancelOption","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_from","type":"address"},{"internalType":"uint256","name":"_optionId","type":"uint256"},{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"cancelOptionFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"denominator","outputs":[{"internalType":"contract IERC20","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"denominatorDecimals","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_optionId","type":"uint256"},{"internalType":"uint256","name":"_amount","type":"uint256"},{"internalType":"address","name":"_referrer","type":"address"}],"name":"exerciseOption","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_from","type":"address"},{"internalType":"uint256","name":"_optionId","type":"uint256"},{"internalType":"uint256","name":"_amount","type":"uint256"},{"internalType":"address","name":"_referrer","type":"address"}],"name":"exerciseOptionFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"feeCalculator","outputs":[{"internalType":"contract IFeeCalculator","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"feeRecipient","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_optionId","type":"uint256"},{"internalType":"uint256","name":"_amount","type":"uint256"},{"internalType":"address","name":"_referrer","type":"address"},{"internalType":"contract IUniswapV2Router02","name":"_router","type":"address"},{"internalType":"uint256","name":"_amountInMax","type":"uint256"},{"internalType":"address[]","name":"_path","type":"address[]"}],"name":"flashExerciseOption","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_from","type":"address"},{"internalType":"uint256","name":"_optionId","type":"uint256"},{"internalType":"uint256","name":"_amount","type":"uint256"},{"internalType":"address","name":"_referrer","type":"address"},{"internalType":"contract IUniswapV2Router02","name":"_router","type":"address"},{"internalType":"uint256","name":"_amountInMax","type":"uint256"},{"internalType":"address[]","name":"_path","type":"address[]"}],"name":"flashExerciseOptionFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_tokenAddress","type":"address"},{"internalType":"uint256","name":"_amount","type":"uint256"},{"internalType":"contract IFlashLoanReceiver","name":"_receiver","type":"address"}],"name":"flashLoan","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_from","type":"address"},{"components":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"strikePrice","type":"uint256"},{"internalType":"uint256","name":"expiration","type":"uint256"},{"internalType":"bool","name":"isCall","type":"bool"},{"internalType":"uint256","name":"claimsPreExp","type":"uint256"},{"internalType":"uint256","name":"claimsPostExp","type":"uint256"},{"internalType":"uint256","name":"exercised","type":"uint256"},{"internalType":"uint256","name":"supply","type":"uint256"},{"internalType":"uint8","name":"decimals","type":"uint8"}],"internalType":"struct PremiaOption.OptionData","name":"_option","type":"tuple"},{"internalType":"uint256","name":"_amount","type":"uint256"},{"internalType":"address","name":"_referrer","type":"address"},{"internalType":"uint8","name":"_decimals","type":"uint8"}],"name":"getExerciseQuote","outputs":[{"components":[{"internalType":"address","name":"inputToken","type":"address"},{"internalType":"uint256","name":"input","type":"uint256"},{"internalType":"uint8","name":"inputDecimals","type":"uint8"},{"internalType":"address","name":"outputToken","type":"address"},{"internalType":"uint256","name":"output","type":"uint256"},{"internalType":"uint8","name":"outputDecimals","type":"uint8"},{"internalType":"uint256","name":"fee","type":"uint256"},{"internalType":"uint256","name":"feeReferrer","type":"uint256"}],"internalType":"struct PremiaOption.QuoteExercise","name":"","type":"tuple"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_token","type":"address"},{"internalType":"uint256","name":"_expiration","type":"uint256"},{"internalType":"uint256","name":"_strikePrice","type":"uint256"},{"internalType":"bool","name":"_isCall","type":"bool"}],"name":"getOptionId","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_token","type":"address"},{"internalType":"uint256","name":"_expiration","type":"uint256"},{"internalType":"uint256","name":"_strikePrice","type":"uint256"},{"internalType":"bool","name":"_isCall","type":"bool"}],"name":"getOptionIdOrCreate","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_from","type":"address"},{"components":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"uint256","name":"strikePrice","type":"uint256"},{"internalType":"uint256","name":"expiration","type":"uint256"},{"internalType":"bool","name":"isCall","type":"bool"}],"internalType":"struct PremiaOption.OptionWriteArgs","name":"_option","type":"tuple"},{"internalType":"address","name":"_referrer","type":"address"},{"internalType":"uint8","name":"_decimals","type":"uint8"}],"name":"getWriteQuote","outputs":[{"components":[{"internalType":"address","name":"collateralToken","type":"address"},{"internalType":"uint256","name":"collateral","type":"uint256"},{"internalType":"uint8","name":"collateralDecimals","type":"uint8"},{"internalType":"uint256","name":"fee","type":"uint256"},{"internalType":"uint256","name":"feeReferrer","type":"uint256"}],"internalType":"struct PremiaOption.QuoteWrite","name":"","type":"tuple"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"},{"internalType":"address","name":"operator","type":"address"}],"name":"isApprovedForAll","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"maxExpiration","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"uint256","name":"","type":"uint256"}],"name":"nbWritten","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"nextOptionId","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"optionData","outputs":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"strikePrice","type":"uint256"},{"internalType":"uint256","name":"expiration","type":"uint256"},{"internalType":"bool","name":"isCall","type":"bool"},{"internalType":"uint256","name":"claimsPreExp","type":"uint256"},{"internalType":"uint256","name":"claimsPostExp","type":"uint256"},{"internalType":"uint256","name":"exercised","type":"uint256"},{"internalType":"uint256","name":"supply","type":"uint256"},{"internalType":"uint8","name":"decimals","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"bool","name":"","type":"bool"}],"name":"options","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"pools","outputs":[{"internalType":"uint256","name":"tokenAmount","type":"uint256"},{"internalType":"uint256","name":"denominatorAmount","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"premiaReferral","outputs":[{"internalType":"contract IPremiaReferral","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256[]","name":"ids","type":"uint256[]"},{"internalType":"uint256[]","name":"amounts","type":"uint256[]"},{"internalType":"bytes","name":"data","type":"bytes"}],"name":"safeBatchTransferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"id","type":"uint256"},{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"bytes","name":"data","type":"bytes"}],"name":"safeTransferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"operator","type":"address"},{"internalType":"bool","name":"approved","type":"bool"}],"name":"setApprovalForAll","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"contract IFeeCalculator","name":"_feeCalculator","type":"address"}],"name":"setFeeCalculator","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_feeRecipient","type":"address"}],"name":"setFeeRecipient","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_max","type":"uint256"}],"name":"setMaxExpiration","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"contract IPremiaReferral","name":"_premiaReferral","type":"address"}],"name":"setPremiaReferral","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"contract IPremiaUncutErc20","name":"_uPremia","type":"address"}],"name":"setPremiaUncutErc20","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address[]","name":"_tokens","type":"address[]"},{"internalType":"uint256[]","name":"_strikePriceIncrement","type":"uint256[]"}],"name":"setTokens","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"string","name":"_newUri","type":"string"}],"name":"setURI","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address[]","name":"_addrList","type":"address[]"}],"name":"setWhitelistedUniswapRouters","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes4","name":"interfaceId","type":"bytes4"}],"name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"tokenStrikeIncrement","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"tokens","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"tokensLength","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"uPremia","outputs":[{"internalType":"contract IPremiaUncutErc20","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"uri","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"whitelistedUniswapRouters","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_optionId","type":"uint256"}],"name":"withdraw","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_from","type":"address"},{"internalType":"uint256","name":"_optionId","type":"uint256"}],"name":"withdrawFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_optionId","type":"uint256"},{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"withdrawPreExpiration","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_from","type":"address"},{"internalType":"uint256","name":"_optionId","type":"uint256"},{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"withdrawPreExpirationFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"components":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"uint256","name":"strikePrice","type":"uint256"},{"internalType":"uint256","name":"expiration","type":"uint256"},{"internalType":"bool","name":"isCall","type":"bool"}],"internalType":"struct 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Contract Creation Code
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
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
-----Decoded View---------------
Arg [0] : _uri (string): https://premia.finance/api/dai/{id}.json
Arg [1] : _denominator (address): 0x6B175474E89094C44Da98b954EedeAC495271d0F
Arg [2] : _uPremia (address): 0x8406C6C1DB4D224C8B0cF7859c0881Ddd68D4761
Arg [3] : _feeCalculator (address): 0x602B50091B0B351CA179E87aD6e006AeCEB2a6Ad
Arg [4] : _premiaReferral (address): 0xaFcF4ca5826eD76189eA227bd863916ABf43a6Da
Arg [5] : _feeRecipient (address): 0xc22FAe86443aEed038A4ED887bbA8F5035FD12F0
-----Encoded View---------------
9 Constructor Arguments found :
Arg [0] : 00000000000000000000000000000000000000000000000000000000000000c0
Arg [1] : 0000000000000000000000006b175474e89094c44da98b954eedeac495271d0f
Arg [2] : 0000000000000000000000008406c6c1db4d224c8b0cf7859c0881ddd68d4761
Arg [3] : 000000000000000000000000602b50091b0b351ca179e87ad6e006aeceb2a6ad
Arg [4] : 000000000000000000000000afcf4ca5826ed76189ea227bd863916abf43a6da
Arg [5] : 000000000000000000000000c22fae86443aeed038a4ed887bba8f5035fd12f0
Arg [6] : 0000000000000000000000000000000000000000000000000000000000000028
Arg [7] : 68747470733a2f2f7072656d69612e66696e616e63652f6170692f6461692f7b
Arg [8] : 69647d2e6a736f6e000000000000000000000000000000000000000000000000
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