ERC-20
Overview
Max Total Supply
387.255437693288569361 ERC20 ***
Holders
220
Market
Onchain Market Cap
$0.00
Circulating Supply Market Cap
-
Other Info
Token Contract (WITH 18 Decimals)
Balance
1 ERC20 ***Value
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# | Exchange | Pair | Price | 24H Volume | % Volume |
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Contract Name:
WPodPut
Compiler Version
v0.6.12+commit.27d51765
Optimization Enabled:
Yes with 200 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: agpl-3.0 pragma solidity 0.6.12; import "./PodPut.sol"; import "../interfaces/IWETH.sol"; import "@openzeppelin/contracts/utils/Address.sol"; import "../lib/Conversion.sol"; /** * @title WPodPut * @author Pods Finance * * @notice Represents a tokenized Put option series for ETH. Internally it Wraps * ETH to treat it seamlessly. * * @dev Put options represents the right, not the obligation to sell the underlying asset * for strike price units of the strike asset. * * There are four main actions that can be done with an option: * * Sellers can mint fungible Put option tokens by locking strikePrice * amountOfOptions * strike asset units until expiration. Buyers can exercise their Put, meaning * selling their underlying asset for strikePrice * amountOfOptions units of strike asset. * At the end, seller can retrieve back its collateral, that could be the underlying asset * AND/OR strike based on the contract's current ratio of underlying and strike assets. * * There are many option's style, but the most usual are: American and European. * The difference between them are the moments that the buyer is allowed to exercise and * the moment that seller can retrieve its locked collateral. * * Exercise: * American -> any moment until expiration * European -> only after expiration and until the end of the exercise window * * Withdraw: * American -> after expiration * European -> after end of exercise window * * Let's take an example: there is such a put option series where buyers * may sell 1 ETH for 300 USDC until Dec 31, 2021. * * In this case: * * - Expiration date: Dec 31, 2021 * - Underlying asset: ETH * - Strike asset: USDC * - Strike price: 300 USDC * * USDC holders may call mint() until the expiration date, which in turn: * * - Will lock their USDC into this contract * - Will issue put tokens corresponding to this USDC amount * - This contract is agnostic about where options could be bought or sold and how much the * the option premium should be. * * USDC holders who also hold the option tokens may call unmint() until the * expiration date, which in turn: * * - Will unlock their USDC from this contract * - Will burn the corresponding amount of put tokens * * Put token holders may call exerciseEth() until the expiration date, to * exercise their option, which in turn: * * - Will sell 1 ETH for 300 USDC (the strike price) each. * - Will burn the corresponding amount of put tokens. * * IMPORTANT: Note that after expiration, option tokens are worthless since they can not * be exercised and its price should be worth 0 in a healthy market. * */ contract WPodPut is PodPut, Conversion { event Received(address indexed sender, uint256 value); constructor( string memory name, string memory symbol, IPodOption.ExerciseType exerciseType, address strikeAsset, uint256 strikePrice, uint256 expiration, uint256 exerciseWindowSize, IConfigurationManager configurationManager ) public PodPut( name, symbol, exerciseType, _parseAddressFromUint(configurationManager.getParameter("WRAPPED_NETWORK_TOKEN")), strikeAsset, strikePrice, expiration, exerciseWindowSize, configurationManager ) {} // solhint-disable-line no-empty-blocks /** * @notice Unlocks collateral by burning option tokens. * * Options can only be burned while the series is NOT expired. * * @param amountOfOptions The amount option tokens to be burned */ function unmint(uint256 amountOfOptions) external override unmintWindow { (uint256 strikeToSend, uint256 underlyingToSend) = _unmintOptions(amountOfOptions, msg.sender); require(strikeToSend > 0, "WPodPut: amount of options is too low"); // Sends strike asset IERC20(strikeAsset()).safeTransfer(msg.sender, strikeToSend); emit Unmint(msg.sender, amountOfOptions, strikeToSend, underlyingToSend); } /** * @notice Allow Put token holders to use them to sell some amount of units * of ETH for the amount * strike price units of the strike token. * * @dev It uses the amount of ETH sent to exchange to the strike amount * * During the process: * * - The amount of ETH is transferred into this contract as a payment for the strike tokens * - The ETH is wrapped into WETH * - The amount of ETH * strikePrice of strike tokens are transferred to the caller * - The amount of option tokens are burned * * On American options, this function can only called anytime before expiration. * For European options, this function can only be called during the exerciseWindow. * Meaning, after expiration and before the end of exercise window. */ function exerciseEth() external payable exerciseWindow { uint256 amountOfOptions = msg.value; require(amountOfOptions > 0, "WPodPut: you can not exercise zero options"); // Calculate the strike amount equivalent to pay for the underlying requested uint256 strikeToSend = _strikeToTransfer(amountOfOptions); // Burn the option tokens equivalent to the underlying requested _burn(msg.sender, amountOfOptions); // Retrieve the underlying asset from caller IWETH(underlyingAsset()).deposit{ value: msg.value }(); // Releases the strike asset to caller, completing the exchange IERC20(strikeAsset()).safeTransfer(msg.sender, strikeToSend); emit Exercise(msg.sender, amountOfOptions); } /** * @notice After series expiration in case of American or after exercise window for European, * allow minters who have locked their strike asset tokens to withdraw them proportionally * to their minted options. * * @dev If assets had been exercised during the option series the minter may withdraw * the exercised assets or a combination of exercised and strike asset tokens. */ function withdraw() external override withdrawWindow { (uint256 strikeToSend, uint256 underlyingToSend) = _withdraw(); IERC20(strikeAsset()).safeTransfer(msg.sender, strikeToSend); if (underlyingToSend > 0) { IWETH(underlyingAsset()).withdraw(underlyingToSend); Address.sendValue(msg.sender, underlyingToSend); } emit Withdraw(msg.sender, strikeToSend, underlyingToSend); } receive() external payable { require(msg.sender == this.underlyingAsset(), "WPodPut: Only deposits from WETH are allowed"); emit Received(msg.sender, msg.value); } }
// SPDX-License-Identifier: agpl-3.0 pragma solidity 0.6.12; import "./PodOption.sol"; /** * @title PodPut * @author Pods Finance * * @notice Represents a tokenized Put option series for some long/short token pair. * * @dev Put options represents the right, not the obligation to sell the underlying asset * for strike price units of the strike asset. * * There are four main actions that can be done with an option: * * Sellers can mint fungible Put option tokens by locking strikePrice * amountOfOptions * strike asset units until expiration. Buyers can exercise their Put, meaning * selling their underlying asset for strikePrice * amountOfOptions units of strike asset. * At the end, seller can retrieve back its collateral, that could be the underlying asset * AND/OR strike based on the contract's current ratio of underlying and strike assets. * * There are many option's style, but the most usual are: American and European. * The difference between them are the moments that the buyer is allowed to exercise and * the moment that seller can retrieve its locked collateral. * * Exercise: * American -> any moment until expiration * European -> only after expiration and until the end of the exercise window * * Withdraw: * American -> after expiration * European -> after end of exercise window * * Let's take an example: there is such an European Put option series where buyers * may sell 1 WETH for 300 USDC until Dec 31, 2021. * * In this case: * * - Expiration date: Dec 31, 2021 * - Underlying asset: WETH * - Strike asset: USDC * - Strike price: 300 USDC * * USDC holders may call mint() until the expiration date, which in turn: * * - Will lock their USDC into this contract * - Will mint/issue option tokens corresponding to this USDC amount * - This contract is agnostic about where to sell/buy and how much should be the * the option premium. * * USDC holders who also hold the option tokens may call unmint() until the * expiration date, which in turn: * * - Will unlock their USDC from this contract * - Will burn the corresponding amount of options tokens * * Option token holders may call exercise() after the expiration date and * before the end of exercise window, to exercise their option, which in turn: * * - Will sell 1 ETH for 300 USDC (the strike price) each. * - Will burn the corresponding amount of option tokens. * * USDC holders that minted options initially can call withdraw() after the * end of exercise window, which in turn: * * - Will give back its amount of collateral locked. That could be o mix of * underlying asset and strike asset based if and how the pool was exercised. * * IMPORTANT: Note that after expiration, option tokens are worthless since they can not * be exercised and its price should worth 0 in a healthy market. * */ contract PodPut is PodOption { constructor( string memory name, string memory symbol, IPodOption.ExerciseType exerciseType, address underlyingAsset, address strikeAsset, uint256 strikePrice, uint256 expiration, uint256 exerciseWindowSize, IConfigurationManager configurationManager ) public PodOption( name, symbol, IPodOption.OptionType.PUT, exerciseType, underlyingAsset, strikeAsset, strikePrice, expiration, exerciseWindowSize, configurationManager ) {} // solhint-disable-line no-empty-blocks /** * @notice Locks strike asset and write option tokens. * * @dev The issued amount ratio is 1:1, i.e., 1 option token for 1 underlying token. * * It presumes the caller has already called IERC20.approve() on the * strike token contract to move caller funds. * * This function is meant to be called by strike token holders wanting * to write option tokens. Calling it will lock `amountOfOptions` * `strikePrice` * units of `strikeToken` into this contract * * Options can only be minted while the series is NOT expired. * * It is also important to notice that options will be sent back * to `msg.sender` and not the `owner`. This behavior is designed to allow * proxy contracts to mint on others behalf. The `owner` will be able to remove * the deposited collateral after series expiration or by calling unmint(), even * if a third-party minted options on its behalf. * * @param amountOfOptions The amount option tokens to be issued * @param owner Which address will be the owner of the options */ function mint(uint256 amountOfOptions, address owner) external override tradeWindow { require(amountOfOptions > 0, "PodPut: you can not mint zero options"); uint256 amountToTransfer = _strikeToTransfer(amountOfOptions); _mintOptions(amountOfOptions, amountToTransfer, owner); IERC20(strikeAsset()).safeTransferFrom(msg.sender, address(this), amountToTransfer); emit Mint(owner, amountOfOptions); } /** * @notice Unlocks collateral by burning option tokens. * * Options can only be burned while the series is NOT expired. * * @param amountOfOptions The amount option tokens to be burned */ function unmint(uint256 amountOfOptions) external virtual override unmintWindow { (uint256 strikeToSend, uint256 underlyingToSend) = _unmintOptions(amountOfOptions, msg.sender); require(strikeToSend > 0, "PodPut: amount of options is too low"); // Sends strike asset IERC20(strikeAsset()).safeTransfer(msg.sender, strikeToSend); emit Unmint(msg.sender, amountOfOptions, strikeToSend, underlyingToSend); } /** * @notice Allow Put token holders to use them to sell some amount of units * of the underlying token for the amount * strike price units of the * strike token. * * @dev It presumes the caller has already called IERC20.approve() on the * underlying token contract to move caller funds. * * During the process: * * - The amount * strikePrice of strike tokens are transferred to the caller * - The amount of option tokens are burned * - The amount of underlying tokens are transferred into * this contract as a payment for the strike tokens * * On American options, this function can only called anytime before expiration. * For European options, this function can only be called during the exerciseWindow. * Meaning, after expiration and before the end of exercise window. * * @param amountOfOptions The amount option tokens to be exercised */ function exercise(uint256 amountOfOptions) external virtual override exerciseWindow { require(amountOfOptions > 0, "PodPut: you can not exercise zero options"); // Calculate the strike amount equivalent to pay for the underlying requested uint256 amountOfStrikeToTransfer = _strikeToTransfer(amountOfOptions); // Burn the option tokens equivalent to the underlying requested _burn(msg.sender, amountOfOptions); // Retrieve the underlying asset from caller IERC20(underlyingAsset()).safeTransferFrom(msg.sender, address(this), amountOfOptions); // Releases the strike asset to caller, completing the exchange IERC20(strikeAsset()).safeTransfer(msg.sender, amountOfStrikeToTransfer); emit Exercise(msg.sender, amountOfOptions); } /** * @notice After series expiration in case of American or after exercise window for European, * allow minters who have locked their strike asset tokens to withdraw them proportionally * to their minted options. * * @dev If assets had been exercised during the option series the minter may withdraw * the exercised assets or a combination of exercised and strike asset tokens. */ function withdraw() external virtual override withdrawWindow { (uint256 strikeToSend, uint256 underlyingToSend) = _withdraw(); IERC20(strikeAsset()).safeTransfer(msg.sender, strikeToSend); if (underlyingToSend > 0) { IERC20(underlyingAsset()).safeTransfer(msg.sender, underlyingToSend); } emit Withdraw(msg.sender, strikeToSend, underlyingToSend); } }
// SPDX-License-Identifier: agpl-3.0 pragma solidity 0.6.12; import "@openzeppelin/contracts/token/ERC20/IERC20.sol"; interface IWETH is IERC20 { function deposit() external payable; function withdraw(uint256 wad) external; event Deposit(address indexed depositor, uint256 amount); event Withdrawal(address indexed recipient, uint256 amount); }
// 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); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { require(isContract(target), "Address: delegate call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.delegatecall(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: agpl-3.0 pragma solidity 0.6.12; contract Conversion { /** * @notice Parses the address represented by an uint */ function _parseAddressFromUint(uint256 x) internal pure returns (address) { bytes memory data = new bytes(32); assembly { mstore(add(data, 32), x) } return abi.decode(data, (address)); } }
// SPDX-License-Identifier: agpl-3.0 pragma solidity 0.6.12; import "@openzeppelin/contracts/token/ERC20/ERC20.sol"; import "@openzeppelin/contracts/token/ERC20/IERC20.sol"; import "@openzeppelin/contracts/token/ERC20/SafeERC20.sol"; import "@openzeppelin/contracts/utils/Address.sol"; import "../interfaces/IPodOption.sol"; import "../lib/CappedOption.sol"; import "../lib/RequiredDecimals.sol"; import "../interfaces/IConfigurationManager.sol"; /** * @title PodOption * @author Pods Finance * * @notice This contract represents the basic structure of the financial instrument * known as Option, sharing logic between both a PUT or a CALL types. * * @dev There are four main actions that can be called in an Option: * * A) mint => A minter can lock collateral and create new options before expiration. * B) unmint => The minter who previously minted can choose for leaving its position any given time * until expiration. * C) exercise => The option bearer the can exchange its option for the collateral at the strike price. * D) withdraw => The minter can retrieve collateral at the end of the series. * * Depending on the type (PUT / CALL) or the exercise (AMERICAN / EUROPEAN), those functions have * different behave and should be override accordingly. */ abstract contract PodOption is IPodOption, ERC20, RequiredDecimals, CappedOption { using SafeERC20 for IERC20; /** * @dev Minimum allowed exercise window: 24 hours */ uint256 public constant MIN_EXERCISE_WINDOW_SIZE = 86400; OptionType private immutable _optionType; ExerciseType private immutable _exerciseType; IConfigurationManager public immutable configurationManager; address private immutable _underlyingAsset; uint8 private immutable _underlyingAssetDecimals; address private immutable _strikeAsset; uint8 private immutable _strikeAssetDecimals; uint256 private immutable _strikePrice; uint256 private immutable _expiration; uint256 private _startOfExerciseWindow; /** * @notice Reserve share balance * @dev Tracks the shares of the total asset reserve by address */ mapping(address => uint256) public shares; /** * @notice Minted option balance * @dev Tracks amount of minted options by address */ mapping(address => uint256) public mintedOptions; /** * @notice Total reserve shares */ uint256 public totalShares = 0; constructor( string memory name, string memory symbol, OptionType optionType, ExerciseType exerciseType, address underlyingAsset, address strikeAsset, uint256 strikePrice, uint256 expiration, uint256 exerciseWindowSize, IConfigurationManager _configurationManager ) public ERC20(name, symbol) CappedOption(_configurationManager) { require(Address.isContract(underlyingAsset), "PodOption: underlying asset is not a contract"); require(Address.isContract(strikeAsset), "PodOption: strike asset is not a contract"); require(underlyingAsset != strikeAsset, "PodOption: underlying asset and strike asset must differ"); require(expiration > block.timestamp, "PodOption: expiration should be in the future"); require(strikePrice > 0, "PodOption: strike price must be greater than zero"); if (exerciseType == ExerciseType.EUROPEAN) { require( exerciseWindowSize >= MIN_EXERCISE_WINDOW_SIZE, "PodOption: exercise window must be greater than or equal 86400" ); _startOfExerciseWindow = expiration.sub(exerciseWindowSize); } else { require(exerciseWindowSize == 0, "PodOption: exercise window size must be equal to zero"); _startOfExerciseWindow = block.timestamp; } configurationManager = _configurationManager; _optionType = optionType; _exerciseType = exerciseType; _expiration = expiration; _underlyingAsset = underlyingAsset; _strikeAsset = strikeAsset; uint8 underlyingDecimals = tryDecimals(IERC20(underlyingAsset)); _underlyingAssetDecimals = underlyingDecimals; _strikeAssetDecimals = tryDecimals(IERC20(strikeAsset)); _strikePrice = strikePrice; _setupDecimals(underlyingDecimals); } /** * @notice Checks if the options series has already expired. */ function hasExpired() external override view returns (bool) { return _hasExpired(); } /** * @notice External function to calculate the amount of strike asset * needed given the option amount */ function strikeToTransfer(uint256 amountOfOptions) external override view returns (uint256) { return _strikeToTransfer(amountOfOptions); } /** * @notice Checks if the options trade window has opened. */ function isTradeWindow() external override view returns (bool) { return _isTradeWindow(); } /** * @notice Checks if the options exercise window has opened. */ function isExerciseWindow() external override view returns (bool) { return _isExerciseWindow(); } /** * @notice Checks if the options withdraw window has opened. */ function isWithdrawWindow() external override view returns (bool) { return _isWithdrawWindow(); } /** * @notice The option type. eg: CALL, PUT */ function optionType() external override view returns (OptionType) { return _optionType; } /** * @notice Exercise type. eg: AMERICAN, EUROPEAN */ function exerciseType() external override view returns (ExerciseType) { return _exerciseType; } /** * @notice The sell price of each unit of underlyingAsset; given in units * of strikeAsset, e.g. 0.99 USDC */ function strikePrice() external override view returns (uint256) { return _strikePrice; } /** * @notice The number of decimals of strikePrice */ function strikePriceDecimals() external override view returns (uint8) { return _strikeAssetDecimals; } /** * @notice The timestamp in seconds that represents the series expiration */ function expiration() external override view returns (uint256) { return _expiration; } /** * @notice How many decimals does the strike token have? E.g.: 18 */ function strikeAssetDecimals() public override view returns (uint8) { return _strikeAssetDecimals; } /** * @notice The asset used as the strike asset, e.g. USDC, DAI */ function strikeAsset() public override view returns (address) { return _strikeAsset; } /** * @notice How many decimals does the underlying token have? E.g.: 18 */ function underlyingAssetDecimals() public override view returns (uint8) { return _underlyingAssetDecimals; } /** * @notice The asset used as the underlying token, e.g. WETH, WBTC, UNI */ function underlyingAsset() public override view returns (address) { return _underlyingAsset; } /** * @notice getSellerWithdrawAmounts returns the seller position based on his amount of shares * and the current option position * * @param owner address of the user to check the withdraw amounts * * @return strikeAmount current amount of strike the user will receive. It may change until maturity * @return underlyingAmount current amount of underlying the user will receive. It may change until maturity */ function getSellerWithdrawAmounts(address owner) public override view returns (uint256 strikeAmount, uint256 underlyingAmount) { uint256 ownerShares = shares[owner]; strikeAmount = ownerShares.mul(strikeReserves()).div(totalShares); underlyingAmount = ownerShares.mul(underlyingReserves()).div(totalShares); return (strikeAmount, underlyingAmount); } /** * @notice The timestamp in seconds that represents the start of exercise window */ function startOfExerciseWindow() public override view returns (uint256) { return _startOfExerciseWindow; } /** * @notice Utility function to check the amount of the underlying tokens * locked inside this contract */ function underlyingReserves() public override view returns (uint256) { return IERC20(_underlyingAsset).balanceOf(address(this)); } /** * @notice Utility function to check the amount of the strike tokens locked * inside this contract */ function strikeReserves() public override view returns (uint256) { return IERC20(_strikeAsset).balanceOf(address(this)); } /** * @dev Modifier with the conditions to be able to mint * based on option exerciseType. */ modifier tradeWindow() { require(_isTradeWindow(), "PodOption: trade window has closed"); _; } /** * @dev Modifier with the conditions to be able to unmint * based on option exerciseType. */ modifier unmintWindow() { require(_isTradeWindow() || _isExerciseWindow(), "PodOption: not in unmint window"); _; } /** * @dev Modifier with the conditions to be able to exercise * based on option exerciseType. */ modifier exerciseWindow() { require(_isExerciseWindow(), "PodOption: not in exercise window"); _; } /** * @dev Modifier with the conditions to be able to withdraw * based on exerciseType. */ modifier withdrawWindow() { require(_isWithdrawWindow(), "PodOption: option has not expired yet"); _; } /** * @dev Internal function to check expiration */ function _hasExpired() internal view returns (bool) { return block.timestamp >= _expiration; } /** * @dev Internal function to check trade window */ function _isTradeWindow() internal view returns (bool) { if (_hasExpired()) { return false; } else if (_exerciseType == ExerciseType.EUROPEAN) { return !_isExerciseWindow(); } return true; } /** * @dev Internal function to check window exercise started */ function _isExerciseWindow() internal view returns (bool) { return !_hasExpired() && block.timestamp >= _startOfExerciseWindow; } /** * @dev Internal function to check withdraw started */ function _isWithdrawWindow() internal view returns (bool) { return _hasExpired(); } /** * @dev Internal function to calculate the amount of strike asset needed given the option amount * @param amountOfOptions Intended amount to options to mint */ function _strikeToTransfer(uint256 amountOfOptions) internal view returns (uint256) { uint256 strikeAmount = amountOfOptions.mul(_strikePrice).div(10**uint256(underlyingAssetDecimals())); require(strikeAmount > 0, "PodOption: amount of options is too low"); return strikeAmount; } /** * @dev Calculate number of reserve shares based on the amount of collateral locked by the minter */ function _calculatedShares(uint256 amountOfCollateral) internal view returns (uint256 ownerShares) { uint256 currentStrikeReserves = strikeReserves(); uint256 currentUnderlyingReserves = underlyingReserves(); uint256 numerator = amountOfCollateral.mul(totalShares); uint256 denominator; if (_optionType == OptionType.PUT) { denominator = currentStrikeReserves.add( currentUnderlyingReserves.mul(_strikePrice).div(uint256(10)**underlyingAssetDecimals()) ); } else { denominator = currentUnderlyingReserves.add( currentStrikeReserves.mul(uint256(10)**underlyingAssetDecimals()).div(_strikePrice) ); } ownerShares = numerator.div(denominator); return ownerShares; } /** * @dev Mint options, creating the shares accordingly to the amount of collateral provided * @param amountOfOptions The amount option tokens to be issued * @param amountOfCollateral The amount of collateral provided to mint options * @param owner Which address will be the owner of the options */ function _mintOptions( uint256 amountOfOptions, uint256 amountOfCollateral, address owner ) internal capped(amountOfOptions) { require(owner != address(0), "PodOption: zero address cannot be the owner"); if (totalShares > 0) { uint256 ownerShares = _calculatedShares(amountOfCollateral); shares[owner] = shares[owner].add(ownerShares); totalShares = totalShares.add(ownerShares); } else { shares[owner] = amountOfCollateral; totalShares = amountOfCollateral; } mintedOptions[owner] = mintedOptions[owner].add(amountOfOptions); _mint(msg.sender, amountOfOptions); } /** * @dev Unmints options, burning the option tokens removing shares accordingly and releasing a certain * amount of collateral. * @param amountOfOptions The amount option tokens to be burned * @param owner Which address options will be burned from */ function _unmintOptions(uint256 amountOfOptions, address owner) internal returns (uint256 strikeToSend, uint256 underlyingToSend) { require(shares[owner] > 0, "PodOption: you do not have minted options"); require(amountOfOptions <= mintedOptions[owner], "PodOption: not enough minted options"); uint256 burnedShares = shares[owner].mul(amountOfOptions).div(mintedOptions[owner]); if (_optionType == IPodOption.OptionType.PUT) { uint256 strikeAssetDeposited = totalSupply().mul(_strikePrice).div(10**uint256(decimals())); uint256 totalInterest = 0; if (strikeReserves() > strikeAssetDeposited) { totalInterest = strikeReserves().sub(strikeAssetDeposited); } strikeToSend = amountOfOptions.mul(_strikePrice).div(10**uint256(decimals())).add( totalInterest.mul(burnedShares).div(totalShares) ); // In the case we lost some funds due to precision, the last user to unmint will still be able to perform. if (strikeToSend > strikeReserves()) { strikeToSend = strikeReserves(); } } else { uint256 underlyingAssetDeposited = totalSupply(); uint256 currentUnderlyingAmount = underlyingReserves().add(strikeReserves().div(_strikePrice)); uint256 totalInterest = 0; if (currentUnderlyingAmount > underlyingAssetDeposited) { totalInterest = currentUnderlyingAmount.sub(underlyingAssetDeposited); } underlyingToSend = amountOfOptions.add(totalInterest.mul(burnedShares).div(totalShares)); } shares[owner] = shares[owner].sub(burnedShares); mintedOptions[owner] = mintedOptions[owner].sub(amountOfOptions); totalShares = totalShares.sub(burnedShares); _burn(owner, amountOfOptions); } /** * @dev Removes all shares, returning the amounts that would be withdrawable */ function _withdraw() internal returns (uint256 strikeToSend, uint256 underlyingToSend) { uint256 ownerShares = shares[msg.sender]; require(ownerShares > 0, "PodOption: you do not have balance to withdraw"); (strikeToSend, underlyingToSend) = getSellerWithdrawAmounts(msg.sender); shares[msg.sender] = 0; mintedOptions[msg.sender] = 0; totalShares = totalShares.sub(ownerShares); } }
// SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; import "../../utils/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 virtual returns (string memory) { return _name; } /** * @dev Returns the symbol of the token, usually a shorter version of the * name. */ function symbol() public view virtual 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 virtual returns (uint8) { return _decimals; } /** * @dev See {IERC20-totalSupply}. */ function totalSupply() public view virtual override returns (uint256) { return _totalSupply; } /** * @dev See {IERC20-balanceOf}. */ function balanceOf(address account) public view virtual 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 virtual { _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 { } }
// 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 "./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: agpl-3.0 pragma solidity 0.6.12; import "@openzeppelin/contracts/token/ERC20/IERC20.sol"; interface IPodOption is IERC20 { /** Enums */ // @dev 0 for Put, 1 for Call enum OptionType { PUT, CALL } // @dev 0 for European, 1 for American enum ExerciseType { EUROPEAN, AMERICAN } /** Events */ event Mint(address indexed minter, uint256 amount); event Unmint(address indexed minter, uint256 optionAmount, uint256 strikeAmount, uint256 underlyingAmount); event Exercise(address indexed exerciser, uint256 amount); event Withdraw(address indexed minter, uint256 strikeAmount, uint256 underlyingAmount); /** Functions */ /** * @notice Locks collateral and write option tokens. * * @dev The issued amount ratio is 1:1, i.e., 1 option token for 1 underlying token. * * The collateral could be the strike or the underlying asset depending on the option type: Put or Call, * respectively * * It presumes the caller has already called IERC20.approve() on the * strike/underlying token contract to move caller funds. * * Options can only be minted while the series is NOT expired. * * It is also important to notice that options will be sent back * to `msg.sender` and not the `owner`. This behavior is designed to allow * proxy contracts to mint on others behalf. The `owner` will be able to remove * the deposited collateral after series expiration or by calling unmint(), even * if a third-party minted options on its behalf. * * @param amountOfOptions The amount option tokens to be issued * @param owner Which address will be the owner of the options */ function mint(uint256 amountOfOptions, address owner) external; /** * @notice Allow option token holders to use them to exercise the amount of units * of the locked tokens for the equivalent amount of the exercisable assets. * * @dev It presumes the caller has already called IERC20.approve() exercisable asset * to move caller funds. * * On American options, this function can only called anytime before expiration. * For European options, this function can only be called during the exerciseWindow. * Meaning, after expiration and before the end of exercise window. * * @param amountOfOptions The amount option tokens to be exercised */ function exercise(uint256 amountOfOptions) external; /** * @notice After series expiration in case of American or after exercise window for European, * allow minters who have locked their collateral to withdraw them proportionally * to their minted options. * * @dev If assets had been exercised during the option series the minter may withdraw * the exercised assets or a combination of exercised and collateral. */ function withdraw() external; /** * @notice Unlocks collateral by burning option tokens. * * Options can only be burned while the series is NOT expired. * * @param amountOfOptions The amount option tokens to be burned */ function unmint(uint256 amountOfOptions) external; function optionType() external view returns (OptionType); function exerciseType() external view returns (ExerciseType); function underlyingAsset() external view returns (address); function underlyingAssetDecimals() external view returns (uint8); function strikeAsset() external view returns (address); function strikeAssetDecimals() external view returns (uint8); function strikePrice() external view returns (uint256); function strikePriceDecimals() external view returns (uint8); function expiration() external view returns (uint256); function startOfExerciseWindow() external view returns (uint256); function hasExpired() external view returns (bool); function isTradeWindow() external view returns (bool); function isExerciseWindow() external view returns (bool); function isWithdrawWindow() external view returns (bool); function strikeToTransfer(uint256 amountOfOptions) external view returns (uint256); function getSellerWithdrawAmounts(address owner) external view returns (uint256 strikeAmount, uint256 underlyingAmount); function underlyingReserves() external view returns (uint256); function strikeReserves() external view returns (uint256); }
// SPDX-License-Identifier: agpl-3.0 pragma solidity 0.6.12; import "@openzeppelin/contracts/token/ERC20/IERC20.sol"; import "@openzeppelin/contracts/math/SafeMath.sol"; import "../interfaces/IConfigurationManager.sol"; import "../interfaces/ICapProvider.sol"; /** * @title CappedOption * @author Pods Finance * * @notice Controls a maximum cap for a guarded release */ abstract contract CappedOption is IERC20 { using SafeMath for uint256; IConfigurationManager private immutable _configurationManager; constructor(IConfigurationManager configurationManager) public { _configurationManager = configurationManager; } /** * @dev Modifier to stop transactions that exceed the cap */ modifier capped(uint256 amountOfOptions) { uint256 cap = capSize(); if (cap > 0) { require(this.totalSupply().add(amountOfOptions) <= cap, "CappedOption: amount exceed cap"); } _; } /** * @dev Get the cap size */ function capSize() public view returns (uint256) { ICapProvider capProvider = ICapProvider(_configurationManager.getCapProvider()); return capProvider.getCap(address(this)); } }
// SPDX-License-Identifier: agpl-3.0 pragma solidity 0.6.12; import "@openzeppelin/contracts/token/ERC20/IERC20.sol"; contract RequiredDecimals { uint256 private constant _MAX_TOKEN_DECIMALS = 38; /** * Tries to fetch the decimals of a token, if not existent, fails with a require statement * * @param token An instance of IERC20 * @return The decimals of a token */ function tryDecimals(IERC20 token) internal view returns (uint8) { // solhint-disable-line private-vars-leading-underscore bytes memory payload = abi.encodeWithSignature("decimals()"); // solhint-disable avoid-low-level-calls (bool success, bytes memory returnData) = address(token).staticcall(payload); require(success, "RequiredDecimals: required decimals"); uint8 decimals = abi.decode(returnData, (uint8)); require(decimals < _MAX_TOKEN_DECIMALS, "RequiredDecimals: token decimals should be lower than 38"); return decimals; } }
// SPDX-License-Identifier: agpl-3.0 pragma solidity >=0.6.12; interface IConfigurationManager { function setParameter(bytes32 name, uint256 value) external; function setEmergencyStop(address emergencyStop) external; function setPricingMethod(address pricingMethod) external; function setIVGuesser(address ivGuesser) external; function setIVProvider(address ivProvider) external; function setPriceProvider(address priceProvider) external; function setCapProvider(address capProvider) external; function setAMMFactory(address ammFactory) external; function setOptionFactory(address optionFactory) external; function setOptionHelper(address optionHelper) external; function setOptionPoolRegistry(address optionPoolRegistry) external; function getParameter(bytes32 name) external view returns (uint256); function owner() external view returns (address); function getEmergencyStop() external view returns (address); function getPricingMethod() external view returns (address); function getIVGuesser() external view returns (address); function getIVProvider() external view returns (address); function getPriceProvider() external view returns (address); function getCapProvider() external view returns (address); function getAMMFactory() external view returns (address); function getOptionFactory() external view returns (address); function getOptionHelper() external view returns (address); function getOptionPoolRegistry() external view returns (address); }
// 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; /** * @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, with an overflow flag. * * _Available since v3.4._ */ function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) { uint256 c = a + b; if (c < a) return (false, 0); return (true, c); } /** * @dev Returns the substraction of two unsigned integers, with an overflow flag. * * _Available since v3.4._ */ function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) { if (b > a) return (false, 0); return (true, a - b); } /** * @dev Returns the multiplication of two unsigned integers, with an overflow flag. * * _Available since v3.4._ */ function tryMul(uint256 a, uint256 b) internal pure returns (bool, 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 (true, 0); uint256 c = a * b; if (c / a != b) return (false, 0); return (true, c); } /** * @dev Returns the division of two unsigned integers, with a division by zero flag. * * _Available since v3.4._ */ function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) { if (b == 0) return (false, 0); return (true, a / b); } /** * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag. * * _Available since v3.4._ */ function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) { if (b == 0) return (false, 0); return (true, a % b); } /** * @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) { require(b <= a, "SafeMath: subtraction overflow"); return a - b; } /** * @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) { 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, reverting 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) { require(b > 0, "SafeMath: division by zero"); return a / b; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * reverting 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) { require(b > 0, "SafeMath: modulo by zero"); return a % b; } /** * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {trySub}. * * 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); return a - b; } /** * @dev Returns the integer division of two unsigned integers, reverting with custom message on * division by zero. The result is rounded towards zero. * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {tryDiv}. * * 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); return a / b; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * reverting with custom message when dividing by zero. * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {tryMod}. * * 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: agpl-3.0 pragma solidity 0.6.12; interface ICapProvider { function setCap(address target, uint256 value) external; function getCap(address target) external view returns (uint256); }
{ "optimizer": { "enabled": true, "runs": 200 }, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } }, "libraries": {} }
Contract Security Audit
- No Contract Security Audit Submitted- Submit Audit Here
[{"inputs":[{"internalType":"string","name":"name","type":"string"},{"internalType":"string","name":"symbol","type":"string"},{"internalType":"enum IPodOption.ExerciseType","name":"exerciseType","type":"uint8"},{"internalType":"address","name":"strikeAsset","type":"address"},{"internalType":"uint256","name":"strikePrice","type":"uint256"},{"internalType":"uint256","name":"expiration","type":"uint256"},{"internalType":"uint256","name":"exerciseWindowSize","type":"uint256"},{"internalType":"contract IConfigurationManager","name":"configurationManager","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"spender","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"exerciser","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Exercise","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"minter","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Mint","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"sender","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Received","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Transfer","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"minter","type":"address"},{"indexed":false,"internalType":"uint256","name":"optionAmount","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"strikeAmount","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"underlyingAmount","type":"uint256"}],"name":"Unmint","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"minter","type":"address"},{"indexed":false,"internalType":"uint256","name":"strikeAmount","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"underlyingAmount","type":"uint256"}],"name":"Withdraw","type":"event"},{"inputs":[],"name":"MIN_EXERCISE_WINDOW_SIZE","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"spender","type":"address"}],"name":"allowance","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"approve","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"capSize","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"configurationManager","outputs":[{"internalType":"contract IConfigurationManager","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"decimals","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"subtractedValue","type":"uint256"}],"name":"decreaseAllowance","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amountOfOptions","type":"uint256"}],"name":"exercise","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"exerciseEth","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"exerciseType","outputs":[{"internalType":"enum IPodOption.ExerciseType","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"expiration","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"name":"getSellerWithdrawAmounts","outputs":[{"internalType":"uint256","name":"strikeAmount","type":"uint256"},{"internalType":"uint256","name":"underlyingAmount","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"hasExpired","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"addedValue","type":"uint256"}],"name":"increaseAllowance","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"isExerciseWindow","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"isTradeWindow","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"isWithdrawWindow","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"amountOfOptions","type":"uint256"},{"internalType":"address","name":"owner","type":"address"}],"name":"mint","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"mintedOptions","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"optionType","outputs":[{"internalType":"enum IPodOption.OptionType","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"shares","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"startOfExerciseWindow","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"strikeAsset","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"strikeAssetDecimals","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"strikePrice","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"strikePriceDecimals","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"strikeReserves","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"amountOfOptions","type":"uint256"}],"name":"strikeToTransfer","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalShares","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transfer","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"sender","type":"address"},{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transferFrom","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"underlyingAsset","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"underlyingAssetDecimals","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"underlyingReserves","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"amountOfOptions","type":"uint256"}],"name":"unmint","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"withdraw","outputs":[],"stateMutability":"nonpayable","type":"function"},{"stateMutability":"payable","type":"receive"}]
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] : name (string): Pods Put ETH:USDC 3200 2021-11-27
Arg [1] : symbol (string): PodETH:USDC
Arg [2] : exerciseType (uint8): 0
Arg [3] : strikeAsset (address): 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48
Arg [4] : strikePrice (uint256): 3200000000
Arg [5] : expiration (uint256): 1638000000
Arg [6] : exerciseWindowSize (uint256): 86400
Arg [7] : configurationManager (address): 0xE4Da64757b2B29dB43429A52CaF7aD884c76f8b0
-----Encoded View---------------
13 Constructor Arguments found :
Arg [0] : 0000000000000000000000000000000000000000000000000000000000000100
Arg [1] : 0000000000000000000000000000000000000000000000000000000000000160
Arg [2] : 0000000000000000000000000000000000000000000000000000000000000000
Arg [3] : 000000000000000000000000a0b86991c6218b36c1d19d4a2e9eb0ce3606eb48
Arg [4] : 00000000000000000000000000000000000000000000000000000000bebc2000
Arg [5] : 0000000000000000000000000000000000000000000000000000000061a1e580
Arg [6] : 0000000000000000000000000000000000000000000000000000000000015180
Arg [7] : 000000000000000000000000e4da64757b2b29db43429a52caf7ad884c76f8b0
Arg [8] : 0000000000000000000000000000000000000000000000000000000000000021
Arg [9] : 506f647320507574204554483a55534443203332303020323032312d31312d32
Arg [10] : 3700000000000000000000000000000000000000000000000000000000000000
Arg [11] : 000000000000000000000000000000000000000000000000000000000000000b
Arg [12] : 506f644554483a55534443000000000000000000000000000000000000000000
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A token is a representation of an on-chain or off-chain asset. The token page shows information such as price, total supply, holders, transfers and social links. Learn more about this page in our Knowledge Base.