ERC-20
Overview
Max Total Supply
1,012,706 HCS
Holders
16
Market
Onchain Market Cap
$0.00
Circulating Supply Market Cap
-
Other Info
Token Contract (WITH 18 Decimals)
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# | Exchange | Pair | Price | 24H Volume | % Volume |
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Contract Name:
Share
Compiler Version
v0.6.12+commit.27d51765
Contract Source Code (Solidity Standard Json-Input format)
pragma solidity ^0.6.0; import './owner/Operator.sol'; import '@openzeppelin/contracts/token/ERC20/ERC20Burnable.sol'; contract Share is ERC20Burnable, Operator { constructor() public ERC20('HCS', 'HCS') { // Mints 1 Hayek Share to contract creator for initial Uniswap oracle deployment. // Will be burned after oracle deployment _mint(msg.sender, 1 * 10**18); } /** * @notice Operator mints hayek cash to a recipient * @param recipient_ The address of recipient * @param amount_ The amount of ok cash to mint to */ function mint(address recipient_, uint256 amount_) public onlyOperator returns (bool) { uint256 balanceBefore = balanceOf(recipient_); _mint(recipient_, amount_); uint256 balanceAfter = balanceOf(recipient_); return balanceAfter >= balanceBefore; } function burn(uint256 amount) public override onlyOperator { super.burn(amount); } function burnFrom(address account, uint256 amount) public override onlyOperator { super.burnFrom(account, amount); } }
pragma solidity ^0.6.0; //pragma experimental ABIEncoderV2; import '@openzeppelin/contracts/token/ERC20/IERC20.sol'; import '@openzeppelin/contracts/token/ERC20/SafeERC20.sol'; import './lib/Safe112.sol'; import './owner/Operator.sol'; import './utils/ContractGuard.sol'; import './interfaces/IHCAsset.sol'; contract ShareWrapper { using SafeMath for uint256; using SafeERC20 for IERC20; IERC20 public share; uint256 private _totalSupply; uint256 private _totalInternalSupply; mapping(address => uint256) private _balances; mapping(address => uint256) private _internalBalances; function totalInternalSupply() public view returns (uint256) { return _totalInternalSupply; } function totalSupply() public view returns (uint256) { return _totalSupply; } function internalBalanceOf(address account) public view returns (uint256) { return _internalBalances[account]; } function balanceOf(address account) public view returns (uint256) { return _balances[account]; } function stake(uint256 amount, uint256 userBoostPower) public virtual { _totalSupply = _totalSupply.add(amount); _totalInternalSupply = _totalInternalSupply.add(amount.mul(userBoostPower.add(1e18)).div(1e18)); _balances[msg.sender] = _balances[msg.sender].add(amount); _internalBalances[msg.sender] = _internalBalances[msg.sender].add((amount.mul(userBoostPower.add(1e18)).div(1e18))); share.safeTransferFrom(msg.sender, address(this), amount); } function withdraw(uint256 amount, uint256 userBoostPower) public virtual { _totalSupply = _totalSupply.sub(amount); _totalInternalSupply = _totalInternalSupply.sub(amount.mul(userBoostPower.add(1e18)).div(1e18)); _balances[msg.sender] = _balances[msg.sender].sub(amount); _internalBalances[msg.sender] = _internalBalances[msg.sender].sub((amount.mul(userBoostPower.add(1e18)).div(1e18))); share.safeTransfer(msg.sender, amount); } function _update(uint256 _userBoostPower) internal { uint256 oldInternalBalance = _internalBalances[msg.sender]; uint256 newInternalBalance = _balances[msg.sender].mul(_userBoostPower.add(1e18)).div(1e18); _internalBalances[msg.sender] = newInternalBalance; _totalInternalSupply = _totalInternalSupply.sub(oldInternalBalance).add(newInternalBalance); } } interface IHayekPlate { function ownerOf(uint256 tokenId) external view returns (address); function transfer(address _to, uint256 _tokenId) external; function safeTransferFrom(address from, address to, uint256 tokenId) external; function getFeatureAddr() external returns(address); } interface IHayekPlateCustomData { function getTokenIdBoostPower(uint256 tokenId) external view returns(uint256); } contract HayekPlateWrapper { using SafeMath for uint256; IHayekPlate public hayekPlate; bytes4 private constant _ERC721_RECEIVED = 0x150b7a02; mapping(address => uint256[]) private _ownedTokens; mapping(uint256 => uint256) private _ownedTokensIndex; mapping(address => uint256) private _ownedBoostPower; mapping (uint256 => address) private _tokenOwner; uint256[] private _allTokens; mapping(uint256 => uint256) private _allTokensIndex; function totalNFTSupply() public view returns (uint256) { return _allTokens.length; } function stakePlate(uint256 tokenId) public virtual { require(msg.sender == hayekPlate.ownerOf(tokenId), 'This account is not owner'); _tokenOwner[tokenId] = msg.sender; _addTokenToOwnerEnumeration(msg.sender, tokenId); _addTokenToAllTokensEnumeration(tokenId); uint256 _plateBoostPower = getTokenIdBoostPower(tokenId); _ownedBoostPower[msg.sender] += _plateBoostPower; hayekPlate.safeTransferFrom(msg.sender, address(this), tokenId); } function withdrawPlate(uint256 tokenId) public virtual { require(msg.sender == _tokenOwner[tokenId], 'This account is not owner'); _removeTokenFromOwnerEnumeration(msg.sender, tokenId); _removeTokenFromAllTokensEnumeration(tokenId); uint256 _plateBoostPower = getTokenIdBoostPower(tokenId); _ownedBoostPower[msg.sender] -= _plateBoostPower; hayekPlate.transfer(msg.sender, tokenId); } function _addTokenToOwnerEnumeration(address to, uint256 tokenId) private { _ownedTokensIndex[tokenId] = _ownedTokens[to].length; _ownedTokens[to].push(tokenId); } function _addTokenToAllTokensEnumeration(uint256 tokenId) private { _allTokensIndex[tokenId] = _allTokens.length; _allTokens.push(tokenId); } function _removeTokenFromOwnerEnumeration(address from, uint256 tokenId) private { uint256 lastTokenIndex = _ownedTokens[from].length.sub(1); uint256 tokenIndex = _ownedTokensIndex[tokenId]; if (tokenIndex != lastTokenIndex) { uint256 lastTokenId = _ownedTokens[from][lastTokenIndex]; _ownedTokens[from][tokenIndex] = lastTokenId; _ownedTokensIndex[lastTokenId] = tokenIndex; } _ownedTokens[from].pop(); } function _removeTokenFromAllTokensEnumeration(uint256 tokenId) private { uint256 lastTokenIndex = _allTokens.length.sub(1); uint256 tokenIndex = _allTokensIndex[tokenId]; uint256 lastTokenId = _allTokens[lastTokenIndex]; _allTokens[tokenIndex] = lastTokenId; _allTokensIndex[lastTokenId] = tokenIndex; _allTokens.pop(); _allTokensIndex[tokenId] = 0; } function getAccountBoostPower(address account) public view returns(uint256){ return _ownedBoostPower[account]; } function getTokenIdBoostPower(uint256 tokenId) internal returns(uint256){ address customDataAddr = hayekPlate.getFeatureAddr(); IHayekPlateCustomData hayekPlateCustomData = IHayekPlateCustomData(customDataAddr); return hayekPlateCustomData.getTokenIdBoostPower(tokenId); } function onERC721Received(address operator, address from, uint256 tokenId, bytes calldata data) external returns (bytes4) { // Shh return _ERC721_RECEIVED; } } contract Boardroom is ShareWrapper, HayekPlateWrapper, ContractGuard, Operator { using SafeERC20 for IERC20; using Address for address; using SafeMath for uint256; using Safe112 for uint112; /* ========== DATA STRUCTURES ========== */ struct Boardseat { uint256 lastSnapshotIndex; uint256 rewardEarned; } struct BoardSnapshot { uint256 time; uint256 rewardReceived; uint256 rewardPerShare; } /* ========== STATE VARIABLES ========== */ IERC20 private cash; mapping(address => Boardseat) private directors; BoardSnapshot[] private boardHistory; /* ========== CONSTRUCTOR ========== */ constructor(IERC20 _cash, IHayekPlate _hayekPlate, IERC20 _share) public { cash = _cash; share = _share; hayekPlate = _hayekPlate; BoardSnapshot memory genesisSnapshot = BoardSnapshot({ time: block.number, rewardReceived: 0, rewardPerShare: 0 }); boardHistory.push(genesisSnapshot); } /* ========== Modifiers =============== */ modifier directorExists { require( balanceOf(msg.sender) > 0, 'Boardroom: The director does not exist' ); _; } modifier updateReward(address director) { if (director != address(0)) { Boardseat memory seat = directors[director]; seat.rewardEarned = earned(director); seat.lastSnapshotIndex = latestSnapshotIndex(); directors[director] = seat; } _; } /* ========== VIEW FUNCTIONS ========== */ // =========== Snapshot getters function latestSnapshotIndex() public view returns (uint256) { return boardHistory.length.sub(1); } function getLatestSnapshot() internal view returns (BoardSnapshot memory) { return boardHistory[latestSnapshotIndex()]; } function getLastSnapshotIndexOf(address director) public view returns (uint256) { return directors[director].lastSnapshotIndex; } function getLastSnapshotOf(address director) internal view returns (BoardSnapshot memory) { return boardHistory[getLastSnapshotIndexOf(director)]; } // =========== Director getters function rewardPerShare() public view returns (uint256) { return getLatestSnapshot().rewardPerShare; } function earned(address director) public view returns (uint256) { uint256 latestRPS = getLatestSnapshot().rewardPerShare; uint256 storedRPS = getLastSnapshotOf(director).rewardPerShare; return internalBalanceOf(director).mul(latestRPS.sub(storedRPS)).div(1e18).add( directors[director].rewardEarned ); } /* ========== MUTATIVE FUNCTIONS ========== */ function stakePlate(uint256 tokenId) public override onlyOneBlock updateReward(msg.sender) { require(tokenId > 0, 'HCCUNIPool: Invalid tokenId'); super.stakePlate(tokenId); uint256 userBoostPower = getAccountBoostPower(msg.sender); _update(userBoostPower); emit PlateStaked(msg.sender, tokenId); } function withdrawPlate(uint256 tokenId) public override onlyOneBlock updateReward(msg.sender) { require(tokenId > 0, 'HCCUNIPool: Invalid tokenId'); super.withdrawPlate(tokenId); uint256 userBoostPower = getAccountBoostPower(msg.sender); _update(userBoostPower); emit PlateWithdrawn(msg.sender, tokenId); } function stake(uint256 amount) public onlyOneBlock updateReward(msg.sender) { require(amount > 0, 'Boardroom: Cannot stake 0'); uint256 userBoostPower = getAccountBoostPower(msg.sender); super.stake(amount, userBoostPower); emit Staked(msg.sender, amount); } function withdraw(uint256 amount) public onlyOneBlock directorExists updateReward(msg.sender) { require(amount > 0, 'Boardroom: Cannot withdraw 0'); uint256 userBoostPower = getAccountBoostPower(msg.sender); super.withdraw(amount, userBoostPower); emit Withdrawn(msg.sender, amount); } function exit() external { withdraw(balanceOf(msg.sender)); claimReward(); } function claimReward() public updateReward(msg.sender) { uint256 reward = directors[msg.sender].rewardEarned; if (reward > 0) { directors[msg.sender].rewardEarned = 0; cash.safeTransfer(msg.sender, reward); emit RewardPaid(msg.sender, reward); } } function allocateSeigniorage(uint256 amount) external onlyOneBlock onlyOperator { require(amount > 0, 'Boardroom: Cannot allocate 0'); require( totalSupply() > 0, 'Boardroom: Cannot allocate when totalSupply is 0' ); // Create & add new snapshot uint256 prevRPS = getLatestSnapshot().rewardPerShare; uint256 nextRPS = prevRPS.add(amount.mul(1e18).div(totalInternalSupply())); BoardSnapshot memory newSnapshot = BoardSnapshot({ time: block.number, rewardReceived: amount, rewardPerShare: nextRPS }); boardHistory.push(newSnapshot); cash.safeTransferFrom(msg.sender, address(this), amount); emit RewardAdded(msg.sender, amount); } /* ========== EVENTS ========== */ event Staked(address indexed user, uint256 amount); event Withdrawn(address indexed user, uint256 amount); event PlateStaked(address indexed user, uint256 tokenId); event PlateWithdrawn(address indexed user, uint256 tokenId); event RewardPaid(address indexed user, uint256 reward); event RewardAdded(address indexed user, uint256 reward); }
// SPDX-License-Identifier: MIT pragma solidity ^0.6.0; /** * @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; 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"); } } }
pragma solidity ^0.6.0; library Safe112 { function add(uint112 a, uint112 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, 'Safe112: addition overflow'); return c; } function sub(uint112 a, uint112 b) internal pure returns (uint256) { return sub(a, b, 'Safe112: subtraction overflow'); } function sub( uint112 a, uint112 b, string memory errorMessage ) internal pure returns (uint112) { require(b <= a, errorMessage); uint112 c = a - b; return c; } function mul(uint112 a, uint112 b) internal pure returns (uint256) { if (a == 0) { return 0; } uint256 c = a * b; require(c / a == b, 'Safe112: multiplication overflow'); return c; } function div(uint112 a, uint112 b) internal pure returns (uint256) { return div(a, b, 'Safe112: division by zero'); } function div( uint112 a, uint112 b, string memory errorMessage ) internal pure returns (uint112) { // Solidity only automatically asserts when dividing by 0 require(b > 0, errorMessage); uint112 c = a / b; return c; } function mod(uint112 a, uint112 b) internal pure returns (uint256) { return mod(a, b, 'Safe112: modulo by zero'); } function mod( uint112 a, uint112 b, string memory errorMessage ) internal pure returns (uint112) { require(b != 0, errorMessage); return a % b; } }
pragma solidity ^0.6.0; import '@openzeppelin/contracts/GSN/Context.sol'; import '@openzeppelin/contracts/access/Ownable.sol'; contract Operator is Context, Ownable { address private _operator; event OperatorTransferred( address indexed previousOperator, address indexed newOperator ); constructor() internal { _operator = _msgSender(); emit OperatorTransferred(address(0), _operator); } function operator() public view returns (address) { return _operator; } modifier onlyOperator() { require( _operator == msg.sender, 'operator: caller is not the operator' ); _; } function isOperator() public view returns (bool) { return _msgSender() == _operator; } function transferOperator(address newOperator_) public onlyOwner { _transferOperator(newOperator_); } function _transferOperator(address newOperator_) internal { require( newOperator_ != address(0), 'operator: zero address given for new operator' ); emit OperatorTransferred(address(0), newOperator_); _operator = newOperator_; } }
pragma solidity ^0.6.0; contract ContractGuard { mapping(uint256 => mapping(address => bool)) private _status; function checkSameOriginReentranted() internal view returns (bool) { return _status[block.number][tx.origin]; } function checkSameSenderReentranted() internal view returns (bool) { return _status[block.number][msg.sender]; } modifier onlyOneBlock() { require( !checkSameOriginReentranted(), 'ContractGuard: one block, one function' ); require( !checkSameSenderReentranted(), 'ContractGuard: one block, one function' ); _; _status[block.number][tx.origin] = true; _status[block.number][msg.sender] = true; } }
pragma solidity ^0.6.0; interface IHCAsset { function mint(address recipient, uint256 amount) external returns (bool); function burn(uint256 amount) external; function burnFrom(address from, uint256 amount) external; function isOperator() external returns (bool); function operator() external view returns (address); }
// SPDX-License-Identifier: MIT pragma solidity ^0.6.0; /** * @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; /** * @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 in 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"); return _functionCallWithValue(target, data, value, errorMessage); } function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) { require(isContract(target), "Address: call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.call{ value: weiValue }(data); 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; /* * @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; 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. */ 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; } }
pragma solidity ^0.6.0; import '@openzeppelin/contracts/math/Math.sol'; import '@openzeppelin/contracts/token/ERC20/IERC20.sol'; import '@openzeppelin/contracts/token/ERC20/SafeERC20.sol'; import '@openzeppelin/contracts/utils/ReentrancyGuard.sol'; import './interfaces/IOracle.sol'; import './interfaces/IBoardroom.sol'; import './interfaces/IHCAsset.sol'; import './interfaces/ISimpleERCFund.sol'; import './lib/Babylonian.sol'; import './lib/FixedPoint.sol'; import './lib/Safe112.sol'; import './owner/Operator.sol'; import './utils/Epoch.sol'; import './utils/ContractGuard.sol'; /** * @title OK Cash Treasury contract * @notice Monetary policy logic to adjust supplies of ok cash assets * @author Summer Smith & Rick Sanchez */ contract Treasury is ContractGuard, Epoch { using FixedPoint for *; using SafeERC20 for IERC20; using Address for address; using SafeMath for uint256; using Safe112 for uint112; /* ========== STATE VARIABLES ========== */ // ========== FLAGS bool public migrated = false; bool public initialized = false; // ========== CORE address public fund; address public cash; address public bond; address public share; address public boardroom; address public bondOracle; address public seigniorageOracle; // ========== PARAMS uint256 public cashPriceOne; uint256 public cashPriceCeiling; uint256 public bondDepletionFloor; uint256 private accumulatedSeigniorage = 0; uint256 public fundAllocationRate = 2; // % /* ========== CONSTRUCTOR ========== */ constructor( address _cash, address _bond, address _share, address _bondOracle, address _seigniorageOracle, address _boardroom, address _fund, uint256 _startTime ) public Epoch(1 days, _startTime, 0) { cash = _cash; bond = _bond; share = _share; bondOracle = _bondOracle; seigniorageOracle = _seigniorageOracle; boardroom = _boardroom; fund = _fund; cashPriceOne = 10**18; cashPriceCeiling = uint256(105).mul(cashPriceOne).div(10**2); bondDepletionFloor = uint256(1000).mul(cashPriceOne); } /* =================== Modifier =================== */ modifier checkMigration { require(!migrated, 'Treasury: migrated'); _; } modifier checkOperator { require( IHCAsset(cash).operator() == address(this) && IHCAsset(bond).operator() == address(this) && IHCAsset(share).operator() == address(this) && Operator(boardroom).operator() == address(this), 'Treasury: need more permission' ); _; } /* ========== VIEW FUNCTIONS ========== */ // budget function getReserve() public view returns (uint256) { return accumulatedSeigniorage; } // oracle function getBondOraclePrice() public view returns (uint256) { return _getCashPrice(bondOracle); } function getSeigniorageOraclePrice() public view returns (uint256) { return _getCashPrice(seigniorageOracle); } function _getCashPrice(address oracle) internal view returns (uint256) { try IOracle(oracle).consult(cash, 1e18) returns (uint256 price) { return price; } catch { revert('Treasury: failed to consult cash price from the oracle'); } } /* ========== GOVERNANCE ========== */ function initialize() public checkOperator { require(!initialized, 'Treasury: initialized'); // burn all of it's balance IHCAsset(cash).burn(IERC20(cash).balanceOf(address(this))); // set accumulatedSeigniorage to it's balance accumulatedSeigniorage = IERC20(cash).balanceOf(address(this)); initialized = true; emit Initialized(msg.sender, block.number); } function migrate(address target) public onlyOperator checkOperator { require(!migrated, 'Treasury: migrated'); // cash Operator(cash).transferOperator(target); Operator(cash).transferOwnership(target); IERC20(cash).transfer(target, IERC20(cash).balanceOf(address(this))); // bond Operator(bond).transferOperator(target); Operator(bond).transferOwnership(target); IERC20(bond).transfer(target, IERC20(bond).balanceOf(address(this))); // share Operator(share).transferOperator(target); Operator(share).transferOwnership(target); IERC20(share).transfer(target, IERC20(share).balanceOf(address(this))); migrated = true; emit Migration(target); } function setFund(address newFund) public onlyOperator { fund = newFund; emit ContributionPoolChanged(msg.sender, newFund); } function setFundAllocationRate(uint256 rate) public onlyOperator { fundAllocationRate = rate; emit ContributionPoolRateChanged(msg.sender, rate); } /* ========== MUTABLE FUNCTIONS ========== */ function _updateCashPrice() internal { try IOracle(bondOracle).update() {} catch {} try IOracle(seigniorageOracle).update() {} catch {} } function buyBonds(uint256 amount, uint256 targetPrice) external onlyOneBlock checkMigration checkStartTime checkOperator { require(amount > 0, 'Treasury: cannot purchase bonds with zero amount'); uint256 cashPrice = _getCashPrice(bondOracle); require(cashPrice == targetPrice, 'Treasury: cash price moved'); require( cashPrice < cashPriceOne, // price < $1 'Treasury: cashPrice not eligible for bond purchase' ); uint256 bondPrice = cashPrice; IHCAsset(cash).burnFrom(msg.sender, amount); IHCAsset(bond).mint(msg.sender, amount.mul(1e18).div(bondPrice)); _updateCashPrice(); emit BoughtBonds(msg.sender, amount); } function redeemBonds(uint256 amount, uint256 targetPrice) external onlyOneBlock checkMigration checkStartTime checkOperator { require(amount > 0, 'Treasury: cannot redeem bonds with zero amount'); uint256 cashPrice = _getCashPrice(bondOracle); require(cashPrice == targetPrice, 'Treasury: cash price moved'); require( cashPrice > cashPriceCeiling, // price > $1.05 'Treasury: cashPrice not eligible for bond purchase' ); require( IERC20(cash).balanceOf(address(this)) >= amount, 'Treasury: treasury has no more budget' ); accumulatedSeigniorage = accumulatedSeigniorage.sub( Math.min(accumulatedSeigniorage, amount) ); IHCAsset(bond).burnFrom(msg.sender, amount); IERC20(cash).safeTransfer(msg.sender, amount); _updateCashPrice(); emit RedeemedBonds(msg.sender, amount); } function allocateSeigniorage() external onlyOneBlock checkMigration checkStartTime checkEpoch checkOperator { _updateCashPrice(); uint256 cashPrice = _getCashPrice(seigniorageOracle); if (cashPrice <= cashPriceCeiling) { return; // just advance epoch instead revert } // circulating supply uint256 cashSupply = IERC20(cash).totalSupply().sub( accumulatedSeigniorage ); uint256 percentage = cashPrice.sub(cashPriceOne); uint256 seigniorage = cashSupply.mul(percentage).div(1e18); IHCAsset(cash).mint(address(this), seigniorage); // ======================== BIP-3 uint256 fundReserve = seigniorage.mul(fundAllocationRate).div(100); if (fundReserve > 0) { IERC20(cash).safeApprove(fund, fundReserve); ISimpleERCFund(fund).deposit( cash, fundReserve, 'Treasury: Seigniorage Allocation' ); emit ContributionPoolFunded(now, fundReserve); } seigniorage = seigniorage.sub(fundReserve); // ======================== BIP-4 uint256 treasuryReserve = Math.min( seigniorage, IERC20(bond).totalSupply().sub(accumulatedSeigniorage) ); if (treasuryReserve > 0) { accumulatedSeigniorage = accumulatedSeigniorage.add( treasuryReserve ); emit TreasuryFunded(now, treasuryReserve); } // boardroom uint256 boardroomReserve = seigniorage.sub(treasuryReserve); if (boardroomReserve > 0) { IERC20(cash).safeApprove(boardroom, boardroomReserve); IBoardroom(boardroom).allocateSeigniorage(boardroomReserve); emit BoardroomFunded(now, boardroomReserve); } } // GOV event Initialized(address indexed executor, uint256 at); event Migration(address indexed target); event ContributionPoolChanged(address indexed operator, address newFund); event ContributionPoolRateChanged( address indexed operator, uint256 newRate ); // CORE event RedeemedBonds(address indexed from, uint256 amount); event BoughtBonds(address indexed from, uint256 amount); event TreasuryFunded(uint256 timestamp, uint256 seigniorage); event BoardroomFunded(uint256 timestamp, uint256 seigniorage); event ContributionPoolFunded(uint256 timestamp, uint256 seigniorage); }
// SPDX-License-Identifier: MIT pragma solidity ^0.6.0; /** * @dev Standard math utilities missing in the Solidity language. */ library Math { /** * @dev Returns the largest of two numbers. */ function max(uint256 a, uint256 b) internal pure returns (uint256) { return a >= b ? a : b; } /** * @dev Returns the smallest of two numbers. */ function min(uint256 a, uint256 b) internal pure returns (uint256) { return a < b ? a : b; } /** * @dev Returns the average of two numbers. The result is rounded towards * zero. */ function average(uint256 a, uint256 b) internal pure returns (uint256) { // (a + b) / 2 can overflow, so we distribute return (a / 2) + (b / 2) + ((a % 2 + b % 2) / 2); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.6.0; /** * @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]. */ 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; } }
pragma solidity ^0.6.0; interface IOracle { function update() external; function consult(address token, uint256 amountIn) external view returns (uint256 amountOut); // function getReserves() external view returns (uint112 reserve0, uint112 reserve1, uint32 blockTimestamp); }
pragma solidity ^0.6.0; interface IBoardroom { function allocateSeigniorage(uint256 amount) external; }
pragma solidity ^0.6.0; interface ISimpleERCFund { function deposit( address token, uint256 amount, string memory reason ) external; function withdraw( address token, uint256 amount, address to, string memory reason ) external; }
pragma solidity ^0.6.0; library Babylonian { function sqrt(uint256 y) internal pure returns (uint256 z) { if (y > 3) { z = y; uint256 x = y / 2 + 1; while (x < z) { z = x; x = (y / x + x) / 2; } } else if (y != 0) { z = 1; } // else z = 0 } }
pragma solidity ^0.6.0; import './Babylonian.sol'; // a library for handling binary fixed point numbers (https://en.wikipedia.org/wiki/Q_(number_format)) library FixedPoint { // range: [0, 2**112 - 1] // resolution: 1 / 2**112 struct uq112x112 { uint224 _x; } // range: [0, 2**144 - 1] // resolution: 1 / 2**112 struct uq144x112 { uint256 _x; } uint8 private constant RESOLUTION = 112; uint256 private constant Q112 = uint256(1) << RESOLUTION; uint256 private constant Q224 = Q112 << RESOLUTION; // encode a uint112 as a UQ112x112 function encode(uint112 x) internal pure returns (uq112x112 memory) { return uq112x112(uint224(x) << RESOLUTION); } // encodes a uint144 as a UQ144x112 function encode144(uint144 x) internal pure returns (uq144x112 memory) { return uq144x112(uint256(x) << RESOLUTION); } // divide a UQ112x112 by a uint112, returning a UQ112x112 function div(uq112x112 memory self, uint112 x) internal pure returns (uq112x112 memory) { require(x != 0, 'FixedPoint: DIV_BY_ZERO'); return uq112x112(self._x / uint224(x)); } // multiply a UQ112x112 by a uint, returning a UQ144x112 // reverts on overflow function mul(uq112x112 memory self, uint256 y) internal pure returns (uq144x112 memory) { uint256 z; require( y == 0 || (z = uint256(self._x) * y) / y == uint256(self._x), 'FixedPoint: MULTIPLICATION_OVERFLOW' ); return uq144x112(z); } // returns a UQ112x112 which represents the ratio of the numerator to the denominator // equivalent to encode(numerator).div(denominator) function fraction(uint112 numerator, uint112 denominator) internal pure returns (uq112x112 memory) { require(denominator > 0, 'FixedPoint: DIV_BY_ZERO'); return uq112x112((uint224(numerator) << RESOLUTION) / denominator); } // decode a UQ112x112 into a uint112 by truncating after the radix point function decode(uq112x112 memory self) internal pure returns (uint112) { return uint112(self._x >> RESOLUTION); } // decode a UQ144x112 into a uint144 by truncating after the radix point function decode144(uq144x112 memory self) internal pure returns (uint144) { return uint144(self._x >> RESOLUTION); } // take the reciprocal of a UQ112x112 function reciprocal(uq112x112 memory self) internal pure returns (uq112x112 memory) { require(self._x != 0, 'FixedPoint: ZERO_RECIPROCAL'); return uq112x112(uint224(Q224 / self._x)); } // square root of a UQ112x112 function sqrt(uq112x112 memory self) internal pure returns (uq112x112 memory) { return uq112x112(uint224(Babylonian.sqrt(uint256(self._x)) << 56)); } }
pragma solidity ^0.6.0; import '@openzeppelin/contracts/math/SafeMath.sol'; import '../owner/Operator.sol'; contract Epoch is Operator { using SafeMath for uint256; uint256 private period; uint256 private startTime; uint256 private epoch; /* ========== CONSTRUCTOR ========== */ constructor( uint256 _period, uint256 _startTime, uint256 _startEpoch ) public { period = _period; startTime = _startTime; epoch = _startEpoch; } /* ========== Modifier ========== */ modifier checkStartTime { require(now >= startTime, 'Epoch: not started yet'); _; } modifier checkEpoch { require(now >= nextEpochPoint(), 'Epoch: not allowed'); _; epoch = epoch.add(1); } /* ========== VIEW FUNCTIONS ========== */ function getCurrentEpoch() public view returns (uint256) { return epoch; } function getPeriod() public view returns (uint256) { return period; } function getStartTime() public view returns (uint256) { return startTime; } function nextEpochPoint() public view returns (uint256) { return startTime.add(epoch.mul(period)); } /* ========== GOVERNANCE ========== */ function setPeriod(uint256 _period) external onlyOperator { period = _period; } }
pragma solidity ^0.6.0; import '@openzeppelin/contracts/token/ERC20/IERC20.sol'; import './owner/Operator.sol'; contract VoteProxy is Operator { // Events event BoardroomChanged( address indexed operator, address indexed oldBoardroom, address indexed newBoardroom ); // Boardroom address public boardroom; constructor(address _boardroom) public { boardroom = _boardroom; } function setBoardroom(address newBoardroom) public onlyOperator { address oldBoardroom = boardroom; boardroom = newBoardroom; emit BoardroomChanged(msg.sender, oldBoardroom, newBoardroom); } function decimals() external pure returns (uint8) { return uint8(18); } function name() external pure returns (string memory) { return 'HCS in Boardroom'; } function symbol() external pure returns (string memory) { return 'SHCS'; } function totalSupply() external view returns (uint256) { return IERC20(boardroom).totalSupply(); } function balanceOf(address _voter) external view returns (uint256) { return IERC20(boardroom).balanceOf(_voter); } }
pragma solidity ^0.6.0; import '@openzeppelin/contracts/token/ERC20/IERC20.sol'; import '@openzeppelin/contracts/token/ERC20/SafeERC20.sol'; import '../owner/Operator.sol'; import '../interfaces/IBoardroom.sol'; contract MockBoardroom is IBoardroom, Operator { using SafeERC20 for IERC20; /* ========== STATE VARIABLES ========== */ IERC20 public cash; /* ========== CONSTRUCTOR ========== */ constructor(address _cash) public { cash = IERC20(_cash); } /* ========== MUTATIVE FUNCTIONS ========== */ function allocateSeigniorage(uint256 amount) external override onlyOperator { require(amount > 0, 'Boardroom: Cannot allocate 0'); cash.safeTransferFrom(msg.sender, address(this), amount); emit RewardAdded(msg.sender, amount); } /* ========== EVENTS ========== */ event RewardAdded(address indexed user, uint256 reward); }
pragma solidity ^0.6.0; import '@openzeppelin/contracts/token/ERC20/IERC20.sol'; import '@openzeppelin/contracts/token/ERC20/SafeERC20.sol'; import './owner/Operator.sol'; import './interfaces/ISimpleERCFund.sol'; contract SimpleERCFund is ISimpleERCFund, Operator { using SafeERC20 for IERC20; function deposit( address token, uint256 amount, string memory reason ) public override { IERC20(token).safeTransferFrom(msg.sender, address(this), amount); emit Deposit(msg.sender, now, reason); } function withdraw( address token, uint256 amount, address to, string memory reason ) public override onlyOperator { IERC20(token).safeTransfer(to, amount); emit Withdrawal(msg.sender, to, now, reason); } event Deposit(address indexed from, uint256 indexed at, string reason); event Withdrawal( address indexed from, address indexed to, uint256 indexed at, string reason ); }
pragma solidity ^0.6.0; /* * Copyright 2020 Compound Labs, Inc. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * 1. Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * * 3. Neither the name of the copyright holder nor the names of its contributors * may be used to endorse or promote products derived from this software without * specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ import '@openzeppelin/contracts/math/SafeMath.sol'; contract Timelock { using SafeMath for uint256; event NewAdmin(address indexed newAdmin); event NewPendingAdmin(address indexed newPendingAdmin); event NewDelay(uint256 indexed newDelay); event CancelTransaction( bytes32 indexed txHash, address indexed target, uint256 value, string signature, bytes data, uint256 eta ); event ExecuteTransaction( bytes32 indexed txHash, address indexed target, uint256 value, string signature, bytes data, uint256 eta ); event QueueTransaction( bytes32 indexed txHash, address indexed target, uint256 value, string signature, bytes data, uint256 eta ); uint256 public constant GRACE_PERIOD = 14 days; uint256 public constant MINIMUM_DELAY = 2 days; uint256 public constant MAXIMUM_DELAY = 30 days; address public admin; address public pendingAdmin; uint256 public delay; mapping(bytes32 => bool) public queuedTransactions; constructor(address admin_, uint256 delay_) public { require( delay_ >= MINIMUM_DELAY, 'Timelock::constructor: Delay must exceed minimum delay.' ); require( delay_ <= MAXIMUM_DELAY, 'Timelock::setDelay: Delay must not exceed maximum delay.' ); admin = admin_; delay = delay_; } receive() external payable {} function setDelay(uint256 delay_) public { require( msg.sender == address(this), 'Timelock::setDelay: Call must come from Timelock.' ); require( delay_ >= MINIMUM_DELAY, 'Timelock::setDelay: Delay must exceed minimum delay.' ); require( delay_ <= MAXIMUM_DELAY, 'Timelock::setDelay: Delay must not exceed maximum delay.' ); delay = delay_; emit NewDelay(delay); } function acceptAdmin() public { require( msg.sender == pendingAdmin, 'Timelock::acceptAdmin: Call must come from pendingAdmin.' ); admin = msg.sender; pendingAdmin = address(0); emit NewAdmin(admin); } function setPendingAdmin(address pendingAdmin_) public { require( msg.sender == address(this), 'Timelock::setPendingAdmin: Call must come from Timelock.' ); pendingAdmin = pendingAdmin_; emit NewPendingAdmin(pendingAdmin); } function queueTransaction( address target, uint256 value, string memory signature, bytes memory data, uint256 eta ) public returns (bytes32) { require( msg.sender == admin, 'Timelock::queueTransaction: Call must come from admin.' ); require( eta >= getBlockTimestamp().add(delay), 'Timelock::queueTransaction: Estimated execution block must satisfy delay.' ); bytes32 txHash = keccak256( abi.encode(target, value, signature, data, eta) ); queuedTransactions[txHash] = true; emit QueueTransaction(txHash, target, value, signature, data, eta); return txHash; } function cancelTransaction( address target, uint256 value, string memory signature, bytes memory data, uint256 eta ) public { require( msg.sender == admin, 'Timelock::cancelTransaction: Call must come from admin.' ); bytes32 txHash = keccak256( abi.encode(target, value, signature, data, eta) ); queuedTransactions[txHash] = false; emit CancelTransaction(txHash, target, value, signature, data, eta); } function executeTransaction( address target, uint256 value, string memory signature, bytes memory data, uint256 eta ) public payable returns (bytes memory) { require( msg.sender == admin, 'Timelock::executeTransaction: Call must come from admin.' ); bytes32 txHash = keccak256( abi.encode(target, value, signature, data, eta) ); require( queuedTransactions[txHash], "Timelock::executeTransaction: Transaction hasn't been queued." ); require( getBlockTimestamp() >= eta, "Timelock::executeTransaction: Transaction hasn't surpassed time lock." ); require( getBlockTimestamp() <= eta.add(GRACE_PERIOD), 'Timelock::executeTransaction: Transaction is stale.' ); queuedTransactions[txHash] = false; bytes memory callData; if (bytes(signature).length == 0) { callData = data; } else { callData = abi.encodePacked( bytes4(keccak256(bytes(signature))), data ); } // solium-disable-next-line security/no-call-value (bool success, bytes memory returnData) = target.call{value: value}( callData ); require( success, 'Timelock::executeTransaction: Transaction execution reverted.' ); emit ExecuteTransaction(txHash, target, value, signature, data, eta); return returnData; } function getBlockTimestamp() internal view returns (uint256) { // solium-disable-next-line security/no-block-members return block.timestamp; } }
pragma solidity ^0.6.0; import '@openzeppelin/contracts/math/SafeMath.sol'; import '../interfaces/IOracle.sol'; contract MockOracle is IOracle { using SafeMath for uint256; uint256 public price; bool public error; function setPrice(uint256 _price) public { price = _price; } function setRevert(bool _error) public { error = _error; } function update() external override { require(!error, 'Oracle: mocked error'); emit Updated(0, 0); } function consult(address, uint256 amountIn) external override view returns (uint256) { return price.mul(amountIn).div(1e18); } event Updated(uint256 price0CumulativeLast, uint256 price1CumulativeLast); }
pragma solidity ^0.6.0; import '@openzeppelin/contracts/math/SafeMath.sol'; import './lib/Babylonian.sol'; import './lib/FixedPoint.sol'; import './lib/UniswapV2Library.sol'; import './lib/UniswapV2OracleLibrary.sol'; import './utils/Epoch.sol'; import './interfaces/IUniswapV2Pair.sol'; import './interfaces/IUniswapV2Factory.sol'; // fixed window oracle that recomputes the average price for the entire period once every period // note that the price average is only guaranteed to be over at least 1 period, but may be over a longer period contract Oracle is Epoch { using FixedPoint for *; using SafeMath for uint256; /* ========== STATE VARIABLES ========== */ // uniswap address public token0; address public token1; IUniswapV2Pair public pair; // oracle uint32 public blockTimestampLast; uint256 public price0CumulativeLast; uint256 public price1CumulativeLast; FixedPoint.uq112x112 public price0Average; FixedPoint.uq112x112 public price1Average; /* ========== CONSTRUCTOR ========== */ constructor( address _factory, address _tokenA, address _tokenB, uint256 _period, uint256 _startTime ) public Epoch(_period, _startTime, 0) { IUniswapV2Pair _pair = IUniswapV2Pair( UniswapV2Library.pairFor(_factory, _tokenA, _tokenB) ); pair = _pair; token0 = _pair.token0(); token1 = _pair.token1(); price0CumulativeLast = _pair.price0CumulativeLast(); // fetch the current accumulated price value (1 / 0) price1CumulativeLast = _pair.price1CumulativeLast(); // fetch the current accumulated price value (0 / 1) uint112 reserve0; uint112 reserve1; (reserve0, reserve1, blockTimestampLast) = _pair.getReserves(); require(reserve0 != 0 && reserve1 != 0, 'Oracle: NO_RESERVES'); // ensure that there's liquidity in the pair } /* ========== MUTABLE FUNCTIONS ========== */ /** @dev Updates 1-day EMA price from Uniswap. */ function update() external checkEpoch { ( uint256 price0Cumulative, uint256 price1Cumulative, uint32 blockTimestamp ) = UniswapV2OracleLibrary.currentCumulativePrices(address(pair)); uint32 timeElapsed = blockTimestamp - blockTimestampLast; // overflow is desired if (timeElapsed == 0) { // prevent divided by zero return; } // overflow is desired, casting never truncates // cumulative price is in (uq112x112 price * seconds) units so we simply wrap it after division by time elapsed price0Average = FixedPoint.uq112x112( uint224((price0Cumulative - price0CumulativeLast) / timeElapsed) ); price1Average = FixedPoint.uq112x112( uint224((price1Cumulative - price1CumulativeLast) / timeElapsed) ); price0CumulativeLast = price0Cumulative; price1CumulativeLast = price1Cumulative; blockTimestampLast = blockTimestamp; emit Updated(price0Cumulative, price1Cumulative); } // note this will always return 0 before update has been called successfully for the first time. function consult(address token, uint256 amountIn) external view returns (uint144 amountOut) { if (token == token0) { amountOut = price0Average.mul(amountIn).decode144(); } else { require(token == token1, 'Oracle: INVALID_TOKEN'); amountOut = price1Average.mul(amountIn).decode144(); } } function pairFor( address factory, address tokenA, address tokenB ) external pure returns (address lpt) { return UniswapV2Library.pairFor(factory, tokenA, tokenB); } event Updated(uint256 price0CumulativeLast, uint256 price1CumulativeLast); }
pragma solidity ^0.6.0; import '@openzeppelin/contracts/math/SafeMath.sol'; import '../interfaces/IUniswapV2Pair.sol'; library UniswapV2Library { using SafeMath for uint256; // returns sorted token addresses, used to handle return values from pairs sorted in this order function sortTokens(address tokenA, address tokenB) internal pure returns (address token0, address token1) { require(tokenA != tokenB, 'UniswapV2Library: IDENTICAL_ADDRESSES'); (token0, token1) = tokenA < tokenB ? (tokenA, tokenB) : (tokenB, tokenA); require(token0 != address(0), 'UniswapV2Library: ZERO_ADDRESS'); } // calculates the CREATE2 address for a pair without making any external calls function pairFor( address factory, address tokenA, address tokenB ) internal pure returns (address pair) { (address token0, address token1) = sortTokens(tokenA, tokenB); pair = address( uint256( keccak256( abi.encodePacked( hex'ff', factory, keccak256(abi.encodePacked(token0, token1)), hex'96e8ac4277198ff8b6f785478aa9a39f403cb768dd02cbee326c3e7da348845f' // init code hash ) ) ) ); } // fetches and sorts the reserves for a pair function getReserves( address factory, address tokenA, address tokenB ) internal view returns (uint256 reserveA, uint256 reserveB) { (address token0, ) = sortTokens(tokenA, tokenB); (uint256 reserve0, uint256 reserve1, ) = IUniswapV2Pair( pairFor(factory, tokenA, tokenB) ) .getReserves(); (reserveA, reserveB) = tokenA == token0 ? (reserve0, reserve1) : (reserve1, reserve0); } // given some amount of an asset and pair reserves, returns an equivalent amount of the other asset function quote( uint256 amountA, uint256 reserveA, uint256 reserveB ) internal pure returns (uint256 amountB) { require(amountA > 0, 'UniswapV2Library: INSUFFICIENT_AMOUNT'); require( reserveA > 0 && reserveB > 0, 'UniswapV2Library: INSUFFICIENT_LIQUIDITY' ); amountB = amountA.mul(reserveB) / reserveA; } // given an input amount of an asset and pair reserves, returns the maximum output amount of the other asset function getAmountOut( uint256 amountIn, uint256 reserveIn, uint256 reserveOut ) internal pure returns (uint256 amountOut) { require(amountIn > 0, 'UniswapV2Library: INSUFFICIENT_INPUT_AMOUNT'); require( reserveIn > 0 && reserveOut > 0, 'UniswapV2Library: INSUFFICIENT_LIQUIDITY' ); uint256 amountInWithFee = amountIn.mul(997); uint256 numerator = amountInWithFee.mul(reserveOut); uint256 denominator = reserveIn.mul(1000).add(amountInWithFee); amountOut = numerator / denominator; } // given an output amount of an asset and pair reserves, returns a required input amount of the other asset function getAmountIn( uint256 amountOut, uint256 reserveIn, uint256 reserveOut ) internal pure returns (uint256 amountIn) { require(amountOut > 0, 'UniswapV2Library: INSUFFICIENT_OUTPUT_AMOUNT'); require( reserveIn > 0 && reserveOut > 0, 'UniswapV2Library: INSUFFICIENT_LIQUIDITY' ); uint256 numerator = reserveIn.mul(amountOut).mul(1000); uint256 denominator = reserveOut.sub(amountOut).mul(997); amountIn = (numerator / denominator).add(1); } // performs chained getAmountOut calculations on any number of pairs function getAmountsOut( address factory, uint256 amountIn, address[] memory path ) internal view returns (uint256[] memory amounts) { require(path.length >= 2, 'UniswapV2Library: INVALID_PATH'); amounts = new uint256[](path.length); amounts[0] = amountIn; for (uint256 i; i < path.length - 1; i++) { (uint256 reserveIn, uint256 reserveOut) = getReserves( factory, path[i], path[i + 1] ); amounts[i + 1] = getAmountOut(amounts[i], reserveIn, reserveOut); } } // performs chained getAmountIn calculations on any number of pairs function getAmountsIn( address factory, uint256 amountOut, address[] memory path ) internal view returns (uint256[] memory amounts) { require(path.length >= 2, 'UniswapV2Library: INVALID_PATH'); amounts = new uint256[](path.length); amounts[amounts.length - 1] = amountOut; for (uint256 i = path.length - 1; i > 0; i--) { (uint256 reserveIn, uint256 reserveOut) = getReserves( factory, path[i - 1], path[i] ); amounts[i - 1] = getAmountIn(amounts[i], reserveIn, reserveOut); } } }
pragma solidity ^0.6.0; import './FixedPoint.sol'; import '../interfaces/IUniswapV2Pair.sol'; // library with helper methods for oracles that are concerned with computing average prices library UniswapV2OracleLibrary { using FixedPoint for *; // helper function that returns the current block timestamp within the range of uint32, i.e. [0, 2**32 - 1] function currentBlockTimestamp() internal view returns (uint32) { return uint32(block.timestamp % 2**32); } // produces the cumulative price using counterfactuals to save gas and avoid a call to sync. function currentCumulativePrices(address pair) internal view returns ( uint256 price0Cumulative, uint256 price1Cumulative, uint32 blockTimestamp ) { blockTimestamp = currentBlockTimestamp(); price0Cumulative = IUniswapV2Pair(pair).price0CumulativeLast(); price1Cumulative = IUniswapV2Pair(pair).price1CumulativeLast(); // if time has elapsed since the last update on the pair, mock the accumulated price values ( uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast ) = IUniswapV2Pair(pair).getReserves(); if (blockTimestampLast != blockTimestamp) { // subtraction overflow is desired uint32 timeElapsed = blockTimestamp - blockTimestampLast; // addition overflow is desired // counterfactual price0Cumulative += uint256(FixedPoint.fraction(reserve1, reserve0)._x) * timeElapsed; // counterfactual price1Cumulative += uint256(FixedPoint.fraction(reserve0, reserve1)._x) * timeElapsed; } } }
pragma solidity ^0.6.0; interface IUniswapV2Pair { event Approval( address indexed owner, address indexed spender, uint256 value ); event Transfer(address indexed from, address indexed to, uint256 value); function name() external pure returns (string memory); function symbol() external pure returns (string memory); function decimals() external pure returns (uint8); function totalSupply() external view returns (uint256); function balanceOf(address owner) external view returns (uint256); function allowance(address owner, address spender) external view returns (uint256); function approve(address spender, uint256 value) external returns (bool); function transfer(address to, uint256 value) external returns (bool); function transferFrom( address from, address to, uint256 value ) external returns (bool); function DOMAIN_SEPARATOR() external view returns (bytes32); function PERMIT_TYPEHASH() external pure returns (bytes32); function nonces(address owner) external view returns (uint256); function permit( address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s ) external; event Mint(address indexed sender, uint256 amount0, uint256 amount1); event Burn( address indexed sender, uint256 amount0, uint256 amount1, address indexed to ); event Swap( address indexed sender, uint256 amount0In, uint256 amount1In, uint256 amount0Out, uint256 amount1Out, address indexed to ); event Sync(uint112 reserve0, uint112 reserve1); function MINIMUM_LIQUIDITY() external pure returns (uint256); function factory() external view returns (address); function token0() external view returns (address); function token1() external view returns (address); function getReserves() external view returns ( uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast ); function price0CumulativeLast() external view returns (uint256); function price1CumulativeLast() external view returns (uint256); function kLast() external view returns (uint256); function mint(address to) external returns (uint256 liquidity); function burn(address to) external returns (uint256 amount0, uint256 amount1); function swap( uint256 amount0Out, uint256 amount1Out, address to, bytes calldata data ) external; function skim(address to) external; function sync() external; function initialize(address, address) external; }
pragma solidity ^0.6.0; interface IUniswapV2Factory { event PairCreated( address indexed token0, address indexed token1, address pair, uint256 ); function getPair(address tokenA, address tokenB) external view returns (address pair); function allPairs(uint256) external view returns (address pair); function allPairsLength() external view returns (uint256); function feeTo() external view returns (address); function feeToSetter() external view returns (address); function createPair(address tokenA, address tokenB) external returns (address pair); }
pragma solidity ^0.6.0; /** *Submitted for verification at Etherscan.io on 2020-07-17 */ /* ____ __ __ __ _ / __/__ __ ___ / /_ / / ___ / /_ (_)__ __ _\ \ / // // _ \/ __// _ \/ -_)/ __// / \ \ / /___/ \_, //_//_/\__//_//_/\__/ \__//_/ /_\_\ /___/ * Synthetix: HAYEKCASHRewards.sol * * Docs: https://docs.synthetix.io/ * * * MIT License * =========== * * Copyright (c) 2020 Synthetix * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all * copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE */ // File: @openzeppelin/contracts/math/Math.sol import '@openzeppelin/contracts/math/Math.sol'; // File: @openzeppelin/contracts/math/SafeMath.sol import '@openzeppelin/contracts/math/SafeMath.sol'; // File: @openzeppelin/contracts/token/ERC20/IERC20.sol import '@openzeppelin/contracts/token/ERC20/IERC20.sol'; // File: @openzeppelin/contracts/utils/Address.sol import '@openzeppelin/contracts/utils/Address.sol'; // File: @openzeppelin/contracts/token/ERC20/SafeERC20.sol import '@openzeppelin/contracts/token/ERC20/SafeERC20.sol'; // File: contracts/IRewardDistributionRecipient.sol import '../interfaces/IRewardDistributionRecipient.sol'; contract WETHWrapper { using SafeMath for uint256; using SafeERC20 for IERC20; IERC20 public weth; uint256 private _totalSupply; uint256 private _totalInternalSupply; mapping(address => uint256) private _balances; mapping(address => uint256) private _internalBalances; function totalInternalSupply() public view returns (uint256) { return _totalInternalSupply; } function totalSupply() public view returns (uint256) { return _totalSupply; } function internalBalanceOf(address account) public view returns (uint256) { return _internalBalances[account]; } function balanceOf(address account) public view returns (uint256) { return _balances[account]; } function stake(uint256 amount, uint256 userBoostPower) internal { _totalSupply = _totalSupply.add(amount); _totalInternalSupply = _totalInternalSupply.add(amount.mul(userBoostPower.add(1e18)).div(1e18)); _balances[msg.sender] = _balances[msg.sender].add(amount); _internalBalances[msg.sender] = _internalBalances[msg.sender].add((amount.mul(userBoostPower.add(1e18)).div(1e18))); weth.safeTransferFrom(msg.sender, address(this), amount); } function withdraw(uint256 amount, uint256 userBoostPower) internal { _totalSupply = _totalSupply.sub(amount); _totalInternalSupply = _totalInternalSupply.sub(amount.mul(userBoostPower.add(1e18)).div(1e18)); _balances[msg.sender] = _balances[msg.sender].sub(amount); _internalBalances[msg.sender] = _internalBalances[msg.sender].sub((amount.mul(userBoostPower.add(1e18)).div(1e18))); weth.safeTransfer(msg.sender, amount); } function _update(uint256 _userBoostPower) internal { uint256 oldInternalBalance = _internalBalances[msg.sender]; uint256 newInternalBalance = _balances[msg.sender].mul(_userBoostPower.add(1e18)).div(1e18); _internalBalances[msg.sender] = newInternalBalance; _totalInternalSupply = _totalInternalSupply.sub(oldInternalBalance).add(newInternalBalance); } } interface IHayekPlate { function ownerOf(uint256 tokenId) external view returns (address); function transfer(address _to, uint256 _tokenId) external; function safeTransferFrom(address from, address to, uint256 tokenId) external; function getFeatureAddr() external returns(address); } interface IHayekPlateCustomData { function getTokenIdBoostPower(uint256 tokenId) external view returns(uint256); } contract HayekPlateWrapper { using SafeMath for uint256; IHayekPlate public hayekPlate; bytes4 private constant _ERC721_RECEIVED = 0x150b7a02; mapping(address => uint256[]) private _ownedTokens; mapping(uint256 => uint256) private _ownedTokensIndex; mapping(address => uint256) private _ownedBoostPower; mapping (uint256 => address) private _tokenOwner; uint256[] private _allTokens; mapping(uint256 => uint256) private _allTokensIndex; function totalNFTSupply() public view returns (uint256) { return _allTokens.length; } function stakePlate(uint256 tokenId) public virtual { require(msg.sender == hayekPlate.ownerOf(tokenId), 'This account is not owner'); _tokenOwner[tokenId] = msg.sender; _addTokenToOwnerEnumeration(msg.sender, tokenId); _addTokenToAllTokensEnumeration(tokenId); uint256 _plateBoostPower = getTokenIdBoostPower(tokenId); _ownedBoostPower[msg.sender] += _plateBoostPower; hayekPlate.safeTransferFrom(msg.sender, address(this), tokenId); } function withdrawPlate(uint256 tokenId) public virtual { require(msg.sender == _tokenOwner[tokenId], 'This account is not owner'); _removeTokenFromOwnerEnumeration(msg.sender, tokenId); _removeTokenFromAllTokensEnumeration(tokenId); uint256 _plateBoostPower = getTokenIdBoostPower(tokenId); _ownedBoostPower[msg.sender] -= _plateBoostPower; hayekPlate.transfer(msg.sender, tokenId); } function _addTokenToOwnerEnumeration(address to, uint256 tokenId) private { _ownedTokensIndex[tokenId] = _ownedTokens[to].length; _ownedTokens[to].push(tokenId); } function _addTokenToAllTokensEnumeration(uint256 tokenId) private { _allTokensIndex[tokenId] = _allTokens.length; _allTokens.push(tokenId); } function _removeTokenFromOwnerEnumeration(address from, uint256 tokenId) private { uint256 lastTokenIndex = _ownedTokens[from].length.sub(1); uint256 tokenIndex = _ownedTokensIndex[tokenId]; if (tokenIndex != lastTokenIndex) { uint256 lastTokenId = _ownedTokens[from][lastTokenIndex]; _ownedTokens[from][tokenIndex] = lastTokenId; _ownedTokensIndex[lastTokenId] = tokenIndex; } _ownedTokens[from].pop(); } function _removeTokenFromAllTokensEnumeration(uint256 tokenId) private { uint256 lastTokenIndex = _allTokens.length.sub(1); uint256 tokenIndex = _allTokensIndex[tokenId]; uint256 lastTokenId = _allTokens[lastTokenIndex]; _allTokens[tokenIndex] = lastTokenId; _allTokensIndex[lastTokenId] = tokenIndex; _allTokens.pop(); _allTokensIndex[tokenId] = 0; } function getAccountBoostPower(address account) public view returns(uint256){ return _ownedBoostPower[account]; } function getTokenIdBoostPower(uint256 tokenId) internal returns(uint256){ address customDataAddr = hayekPlate.getFeatureAddr(); IHayekPlateCustomData hayekPlateCustomData = IHayekPlateCustomData(customDataAddr); return hayekPlateCustomData.getTokenIdBoostPower(tokenId); } function getStakedTokenIds(address account) public view returns(uint256[] memory){ return _ownedTokens[account]; } function onERC721Received(address operator, address from, uint256 tokenId, bytes calldata data) external returns (bytes4) { // Shh return _ERC721_RECEIVED; } } contract HCCWETHPool is HayekPlateWrapper, WETHWrapper, IRewardDistributionRecipient { IERC20 public hayekCash; uint256 public DURATION = 10 days; uint256 public starttime; uint256 public periodFinish = 0; uint256 public rewardRate = 0; uint256 public lastUpdateTime; uint256 public rewardPerTokenStored; mapping(address => uint256) public userRewardPerTokenPaid; mapping(address => uint256) public rewards; mapping(address => uint256) public deposits; event RewardAdded(uint256 reward); event Staked(address indexed user, uint256 amount); event Withdrawn(address indexed user, uint256 amount); event PlateStaked(address indexed user, uint256 tokenId); event PlateWithdrawn(address indexed user, uint256 tokenId); event RewardPaid(address indexed user, uint256 reward); constructor( address hayekCash_, address weth_, address hayekPlate_, uint256 starttime_ ) public { hayekCash = IERC20(hayekCash_); weth = IERC20(weth_); hayekPlate = IHayekPlate(hayekPlate_); starttime = starttime_; } modifier checkStart() { require(block.timestamp >= starttime, 'HCCWETHPool: not start'); _; } modifier updateReward(address account) { rewardPerTokenStored = rewardPerToken(); lastUpdateTime = lastTimeRewardApplicable(); if (account != address(0)) { rewards[account] = earned(account); userRewardPerTokenPaid[account] = rewardPerTokenStored; } _; } function lastTimeRewardApplicable() public view returns (uint256) { return Math.min(block.timestamp, periodFinish); } function rewardPerToken() public view returns (uint256) { if (totalInternalSupply() == 0) { return rewardPerTokenStored; } return rewardPerTokenStored.add( lastTimeRewardApplicable() .sub(lastUpdateTime) .mul(rewardRate) .mul(1e18) .div(totalInternalSupply()) ); } function earned(address account) public view returns (uint256) { return internalBalanceOf(account) .mul(rewardPerToken().sub(userRewardPerTokenPaid[account])) .div(1e18) .add(rewards[account]); } function stakePlate(uint256 tokenId) public override updateReward(msg.sender) checkStart { require(tokenId > 0, 'HCCWETHPool: Invalid tokenId'); super.stakePlate(tokenId); uint256 userBoostPower = getAccountBoostPower(msg.sender); _update(userBoostPower); emit PlateStaked(msg.sender, tokenId); } function withdrawPlate(uint256 tokenId) public override updateReward(msg.sender) checkStart { require(tokenId > 0, 'HCCWETHPool: Invalid tokenId'); super.withdrawPlate(tokenId); uint256 userBoostPower = getAccountBoostPower(msg.sender); _update(userBoostPower); emit PlateWithdrawn(msg.sender, tokenId); } // stake visibility is public as overriding LPTokenWrapper's stake() function function stake(uint256 amount) public updateReward(msg.sender) checkStart { require(amount > 0, 'HCCWETHPool: Cannot stake 0'); uint256 newDeposit = deposits[msg.sender].add(amount); require( newDeposit <= 10e18, 'HCCWETHPool: deposit amount exceeds maximum 10' ); deposits[msg.sender] = newDeposit; uint256 userBoostPower = getAccountBoostPower(msg.sender); super.stake(amount, userBoostPower); emit Staked(msg.sender, amount); } function withdraw(uint256 amount) public updateReward(msg.sender) checkStart { require(amount > 0, 'HCCWETHPool: Cannot withdraw 0'); deposits[msg.sender] = deposits[msg.sender].sub(amount); uint256 userBoostPower = getAccountBoostPower(msg.sender); super.withdraw(amount, userBoostPower); emit Withdrawn(msg.sender, amount); } function exit() external { withdraw(balanceOf(msg.sender)); getReward(); } function getReward() public updateReward(msg.sender) checkStart { uint256 reward = earned(msg.sender); if (reward > 0) { rewards[msg.sender] = 0; hayekCash.safeTransfer(msg.sender, reward); emit RewardPaid(msg.sender, reward); } } function notifyRewardAmount(uint256 reward) external override onlyRewardDistribution updateReward(address(0)) { if (block.timestamp > starttime) { if (block.timestamp >= periodFinish) { rewardRate = reward.div(DURATION); } else { uint256 remaining = periodFinish.sub(block.timestamp); uint256 leftover = remaining.mul(rewardRate); rewardRate = reward.add(leftover).div(DURATION); } lastUpdateTime = block.timestamp; periodFinish = block.timestamp.add(DURATION); emit RewardAdded(reward); } else { rewardRate = reward.div(DURATION); lastUpdateTime = starttime; periodFinish = starttime.add(DURATION); emit RewardAdded(reward); } } }
pragma solidity ^0.6.0; import '@openzeppelin/contracts/access/Ownable.sol'; // File: @openzeppelin/contracts/token/ERC20/IERC20.sol import '@openzeppelin/contracts/token/ERC20/IERC20.sol'; abstract contract IRewardDistributionRecipient is Ownable { address public rewardDistribution; function notifyRewardAmount(uint256 reward) external virtual; modifier onlyRewardDistribution() { require( _msgSender() == rewardDistribution, 'Caller is not reward distribution' ); _; } function setRewardDistribution(address _rewardDistribution) external virtual onlyOwner { rewardDistribution = _rewardDistribution; } }
pragma solidity ^0.6.0; interface IDistributor { function distribute() external; }
pragma solidity ^0.6.0; /** *Submitted for verification at Etherscan.io on 2020-07-17 */ /* ____ __ __ __ _ / __/__ __ ___ / /_ / / ___ / /_ (_)__ __ _\ \ / // // _ \/ __// _ \/ -_)/ __// / \ \ / /___/ \_, //_//_/\__//_//_/\__/ \__//_/ /_\_\ /___/ * Synthetix: HAYEKCASHRewards.sol * * Docs: https://docs.synthetix.io/ * * * MIT License * =========== * * Copyright (c) 2020 Synthetix * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all * copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE */ // File: @openzeppelin/contracts/math/Math.sol import '@openzeppelin/contracts/math/Math.sol'; // File: @openzeppelin/contracts/math/SafeMath.sol import '@openzeppelin/contracts/math/SafeMath.sol'; // File: @openzeppelin/contracts/token/ERC20/IERC20.sol import '@openzeppelin/contracts/token/ERC20/IERC20.sol'; // File: @openzeppelin/contracts/utils/Address.sol import '@openzeppelin/contracts/utils/Address.sol'; // File: @openzeppelin/contracts/token/ERC20/SafeERC20.sol import '@openzeppelin/contracts/token/ERC20/SafeERC20.sol'; // File: contracts/IRewardDistributionRecipient.sol import '../interfaces/IRewardDistributionRecipient.sol'; contract DAIWrapper { using SafeMath for uint256; using SafeERC20 for IERC20; IERC20 public dai; uint256 private _totalSupply; uint256 private _totalInternalSupply; mapping(address => uint256) private _balances; mapping(address => uint256) private _internalBalances; function totalInternalSupply() public view returns (uint256) { return _totalInternalSupply; } function totalSupply() public view returns (uint256) { return _totalSupply; } function internalBalanceOf(address account) public view returns (uint256) { return _internalBalances[account]; } function balanceOf(address account) public view returns (uint256) { return _balances[account]; } function stake(uint256 amount, uint256 userBoostPower) internal { _totalSupply = _totalSupply.add(amount); _totalInternalSupply = _totalInternalSupply.add(amount.mul(userBoostPower.add(1e18)).div(1e18)); _balances[msg.sender] = _balances[msg.sender].add(amount); _internalBalances[msg.sender] = _internalBalances[msg.sender].add((amount.mul(userBoostPower.add(1e18)).div(1e18))); dai.safeTransferFrom(msg.sender, address(this), amount); } function withdraw(uint256 amount, uint256 userBoostPower) internal { _totalSupply = _totalSupply.sub(amount); _totalInternalSupply = _totalInternalSupply.sub(amount.mul(userBoostPower.add(1e18)).div(1e18)); _balances[msg.sender] = _balances[msg.sender].sub(amount); _internalBalances[msg.sender] = _internalBalances[msg.sender].sub((amount.mul(userBoostPower.add(1e18)).div(1e18))); dai.safeTransfer(msg.sender, amount); } function _update(uint256 _userBoostPower) internal { uint256 oldInternalBalance = _internalBalances[msg.sender]; uint256 newInternalBalance = _balances[msg.sender].mul(_userBoostPower.add(1e18)).div(1e18); _internalBalances[msg.sender] = newInternalBalance; _totalInternalSupply = _totalInternalSupply.sub(oldInternalBalance).add(newInternalBalance); } } interface IHayekPlate { function ownerOf(uint256 tokenId) external view returns (address); function transfer(address _to, uint256 _tokenId) external; function safeTransferFrom(address from, address to, uint256 tokenId) external; function getFeatureAddr() external returns(address); } interface IHayekPlateCustomData { function getTokenIdBoostPower(uint256 tokenId) external view returns(uint256); } contract HayekPlateWrapper { using SafeMath for uint256; IHayekPlate public hayekPlate; bytes4 private constant _ERC721_RECEIVED = 0x150b7a02; mapping(address => uint256[]) private _ownedTokens; mapping(uint256 => uint256) private _ownedTokensIndex; mapping(address => uint256) private _ownedBoostPower; mapping (uint256 => address) private _tokenOwner; uint256[] private _allTokens; mapping(uint256 => uint256) private _allTokensIndex; function totalNFTSupply() public view returns (uint256) { return _allTokens.length; } function stakePlate(uint256 tokenId) public virtual { require(msg.sender == hayekPlate.ownerOf(tokenId), 'This account is not owner'); _tokenOwner[tokenId] = msg.sender; _addTokenToOwnerEnumeration(msg.sender, tokenId); _addTokenToAllTokensEnumeration(tokenId); uint256 _plateBoostPower = getTokenIdBoostPower(tokenId); _ownedBoostPower[msg.sender] += _plateBoostPower; hayekPlate.safeTransferFrom(msg.sender, address(this), tokenId); } function withdrawPlate(uint256 tokenId) public virtual { require(msg.sender == _tokenOwner[tokenId], 'This account is not owner'); _removeTokenFromOwnerEnumeration(msg.sender, tokenId); _removeTokenFromAllTokensEnumeration(tokenId); uint256 _plateBoostPower = getTokenIdBoostPower(tokenId); _ownedBoostPower[msg.sender] -= _plateBoostPower; hayekPlate.transfer(msg.sender, tokenId); } function _addTokenToOwnerEnumeration(address to, uint256 tokenId) private { _ownedTokensIndex[tokenId] = _ownedTokens[to].length; _ownedTokens[to].push(tokenId); } function _addTokenToAllTokensEnumeration(uint256 tokenId) private { _allTokensIndex[tokenId] = _allTokens.length; _allTokens.push(tokenId); } function _removeTokenFromOwnerEnumeration(address from, uint256 tokenId) private { uint256 lastTokenIndex = _ownedTokens[from].length.sub(1); uint256 tokenIndex = _ownedTokensIndex[tokenId]; if (tokenIndex != lastTokenIndex) { uint256 lastTokenId = _ownedTokens[from][lastTokenIndex]; _ownedTokens[from][tokenIndex] = lastTokenId; _ownedTokensIndex[lastTokenId] = tokenIndex; } _ownedTokens[from].pop(); } function _removeTokenFromAllTokensEnumeration(uint256 tokenId) private { uint256 lastTokenIndex = _allTokens.length.sub(1); uint256 tokenIndex = _allTokensIndex[tokenId]; uint256 lastTokenId = _allTokens[lastTokenIndex]; _allTokens[tokenIndex] = lastTokenId; _allTokensIndex[lastTokenId] = tokenIndex; _allTokens.pop(); _allTokensIndex[tokenId] = 0; } function getAccountBoostPower(address account) public view returns(uint256){ return _ownedBoostPower[account]; } function getStakedTokenIds(address account) public view returns(uint256[] memory){ return _ownedTokens[account]; } function getTokenIdBoostPower(uint256 tokenId) internal returns(uint256){ address customDataAddr = hayekPlate.getFeatureAddr(); IHayekPlateCustomData hayekPlateCustomData = IHayekPlateCustomData(customDataAddr); return hayekPlateCustomData.getTokenIdBoostPower(tokenId); } function onERC721Received(address operator, address from, uint256 tokenId, bytes calldata data) external returns (bytes4) { // Shh return _ERC721_RECEIVED; } } contract HCCDAIPool is HayekPlateWrapper, DAIWrapper, IRewardDistributionRecipient { IERC20 public hayekCash; uint256 public DURATION = 10 days; uint256 public starttime; uint256 public periodFinish = 0; uint256 public rewardRate = 0; uint256 public lastUpdateTime; uint256 public rewardPerTokenStored; mapping(address => uint256) public userRewardPerTokenPaid; mapping(address => uint256) public rewards; mapping(address => uint256) public deposits; event RewardAdded(uint256 reward); event Staked(address indexed user, uint256 amount); event Withdrawn(address indexed user, uint256 amount); event PlateStaked(address indexed user, uint256 tokenId); event PlateWithdrawn(address indexed user, uint256 tokenId); event RewardPaid(address indexed user, uint256 reward); constructor( address hayekCash_, address dai_, address hayekPlate_, uint256 starttime_ ) public { hayekCash = IERC20(hayekCash_); dai = IERC20(dai_); hayekPlate = IHayekPlate(hayekPlate_); starttime = starttime_; } modifier checkStart() { require(block.timestamp >= starttime, 'HCCDAIPool: not start'); _; } modifier updateReward(address account) { rewardPerTokenStored = rewardPerToken(); lastUpdateTime = lastTimeRewardApplicable(); if (account != address(0)) { rewards[account] = earned(account); userRewardPerTokenPaid[account] = rewardPerTokenStored; } _; } function lastTimeRewardApplicable() public view returns (uint256) { return Math.min(block.timestamp, periodFinish); } function rewardPerToken() public view returns (uint256) { if (totalInternalSupply() == 0) { return rewardPerTokenStored; } return rewardPerTokenStored.add( lastTimeRewardApplicable() .sub(lastUpdateTime) .mul(rewardRate) .mul(1e18) .div(totalInternalSupply()) ); } function earned(address account) public view returns (uint256) { return internalBalanceOf(account) .mul(rewardPerToken().sub(userRewardPerTokenPaid[account])) .div(1e18) .add(rewards[account]); } function stakePlate(uint256 tokenId) public override updateReward(msg.sender) checkStart { require(tokenId > 0, 'HCCDAIPool: Invalid tokenId'); super.stakePlate(tokenId); uint256 userBoostPower = getAccountBoostPower(msg.sender); _update(userBoostPower); emit PlateStaked(msg.sender, tokenId); } function withdrawPlate(uint256 tokenId) public override updateReward(msg.sender) checkStart { require(tokenId > 0, 'HCCDAIPool: Invalid tokenId'); super.withdrawPlate(tokenId); uint256 userBoostPower = getAccountBoostPower(msg.sender); _update(userBoostPower); emit PlateWithdrawn(msg.sender, tokenId); } // stake visibility is public as overriding LPTokenWrapper's stake() function function stake(uint256 amount) public updateReward(msg.sender) checkStart { require(amount > 0, 'HCCDAIPool: Cannot stake 0'); uint256 newDeposit = deposits[msg.sender].add(amount); require( newDeposit <= 20000e18, 'HCCDAIPool: deposit amount exceeds maximum 20000' ); deposits[msg.sender] = newDeposit; uint256 userBoostPower = getAccountBoostPower(msg.sender); super.stake(amount, userBoostPower); emit Staked(msg.sender, amount); } function withdraw(uint256 amount) public updateReward(msg.sender) checkStart { require(amount > 0, 'HCCDAIPool: Cannot withdraw 0'); deposits[msg.sender] = deposits[msg.sender].sub(amount); uint256 userBoostPower = getAccountBoostPower(msg.sender); super.withdraw(amount, userBoostPower); emit Withdrawn(msg.sender, amount); } function exit() external { withdraw(balanceOf(msg.sender)); getReward(); } function getReward() public updateReward(msg.sender) checkStart { uint256 reward = earned(msg.sender); if (reward > 0) { rewards[msg.sender] = 0; hayekCash.safeTransfer(msg.sender, reward); emit RewardPaid(msg.sender, reward); } } function notifyRewardAmount(uint256 reward) external override onlyRewardDistribution updateReward(address(0)) { if (block.timestamp > starttime) { if (block.timestamp >= periodFinish) { rewardRate = reward.div(DURATION); } else { uint256 remaining = periodFinish.sub(block.timestamp); uint256 leftover = remaining.mul(rewardRate); rewardRate = reward.add(leftover).div(DURATION); } lastUpdateTime = block.timestamp; periodFinish = block.timestamp.add(DURATION); emit RewardAdded(reward); } else { rewardRate = reward.div(DURATION); lastUpdateTime = starttime; periodFinish = starttime.add(DURATION); emit RewardAdded(reward); } } }
pragma solidity ^0.6.0; import './interfaces/IDistributor.sol'; contract Distributor { IDistributor[] public distributors; constructor(IDistributor[] memory _distributors) public { distributors = _distributors; } function distribute() public { for (uint256 i = 0; i < distributors.length; i++) { distributors[i].distribute(); } } }
pragma solidity ^0.6.0; /** *Submitted for verification at Etherscan.io on 2020-07-17 */ /* ____ __ __ __ _ / __/__ __ ___ / /_ / / ___ / /_ (_)__ __ _\ \ / // // _ \/ __// _ \/ -_)/ __// / \ \ / /___/ \_, //_//_/\__//_//_/\__/ \__//_/ /_\_\ /___/ * Synthetix: HAYEKCASHRewards.sol * * Docs: https://docs.synthetix.io/ * * * MIT License * =========== * * Copyright (c) 2020 Synthetix * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all * copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE */ // File: @openzeppelin/contracts/math/Math.sol import '@openzeppelin/contracts/math/Math.sol'; // File: @openzeppelin/contracts/math/SafeMath.sol import '@openzeppelin/contracts/math/SafeMath.sol'; // File: @openzeppelin/contracts/token/ERC20/IERC20.sol import '@openzeppelin/contracts/token/ERC20/IERC20.sol'; // File: @openzeppelin/contracts/utils/Address.sol import '@openzeppelin/contracts/utils/Address.sol'; // File: @openzeppelin/contracts/token/ERC20/SafeERC20.sol import '@openzeppelin/contracts/token/ERC20/SafeERC20.sol'; // File: contracts/IRewardDistributionRecipient.sol import '../interfaces/IRewardDistributionRecipient.sol'; contract USDTWrapper { using SafeMath for uint256; using SafeERC20 for IERC20; IERC20 public usdt; uint256 private _totalSupply; uint256 private _totalInternalSupply; mapping(address => uint256) private _balances; mapping(address => uint256) private _internalBalances; function totalInternalSupply() public view returns (uint256) { return _totalInternalSupply; } function totalSupply() public view returns (uint256) { return _totalSupply; } function internalBalanceOf(address account) public view returns (uint256) { return _internalBalances[account]; } function balanceOf(address account) public view returns (uint256) { return _balances[account]; } function stake(uint256 amount, uint256 userBoostPower) internal { _totalSupply = _totalSupply.add(amount); _totalInternalSupply = _totalInternalSupply.add(amount.mul(userBoostPower.add(1e18)).div(1e18)); _balances[msg.sender] = _balances[msg.sender].add(amount); _internalBalances[msg.sender] = _internalBalances[msg.sender].add((amount.mul(userBoostPower.add(1e18)).div(1e18))); usdt.safeTransferFrom(msg.sender, address(this), amount); } function withdraw(uint256 amount, uint256 userBoostPower) internal { _totalSupply = _totalSupply.sub(amount); _totalInternalSupply = _totalInternalSupply.sub(amount.mul(userBoostPower.add(1e18)).div(1e18)); _balances[msg.sender] = _balances[msg.sender].sub(amount); _internalBalances[msg.sender] = _internalBalances[msg.sender].sub((amount.mul(userBoostPower.add(1e18)).div(1e18))); usdt.safeTransfer(msg.sender, amount); } function _update(uint256 _userBoostPower) internal { uint256 oldInternalBalance = _internalBalances[msg.sender]; uint256 newInternalBalance = _balances[msg.sender].mul(_userBoostPower.add(1e18)).div(1e18); _internalBalances[msg.sender] = newInternalBalance; _totalInternalSupply = _totalInternalSupply.sub(oldInternalBalance).add(newInternalBalance); } } interface IHayekPlate { function ownerOf(uint256 tokenId) external view returns (address); function transfer(address _to, uint256 _tokenId) external; function safeTransferFrom(address from, address to, uint256 tokenId) external; function getFeatureAddr() external returns(address); } interface IHayekPlateCustomData { function getTokenIdBoostPower(uint256 tokenId) external view returns(uint256); } contract HayekPlateWrapper { using SafeMath for uint256; IHayekPlate public hayekPlate; bytes4 private constant _ERC721_RECEIVED = 0x150b7a02; mapping(address => uint256[]) private _ownedTokens; mapping(uint256 => uint256) private _ownedTokensIndex; mapping(address => uint256) private _ownedBoostPower; mapping (uint256 => address) private _tokenOwner; uint256[] private _allTokens; mapping(uint256 => uint256) private _allTokensIndex; function totalNFTSupply() public view returns (uint256) { return _allTokens.length; } function stakePlate(uint256 tokenId) public virtual { require(msg.sender == hayekPlate.ownerOf(tokenId), 'This account is not owner'); _tokenOwner[tokenId] = msg.sender; _addTokenToOwnerEnumeration(msg.sender, tokenId); _addTokenToAllTokensEnumeration(tokenId); uint256 _plateBoostPower = getTokenIdBoostPower(tokenId); _ownedBoostPower[msg.sender] += _plateBoostPower; hayekPlate.safeTransferFrom(msg.sender, address(this), tokenId); } function withdrawPlate(uint256 tokenId) public virtual { require(msg.sender == _tokenOwner[tokenId], 'This account is not owner'); _removeTokenFromOwnerEnumeration(msg.sender, tokenId); _removeTokenFromAllTokensEnumeration(tokenId); uint256 _plateBoostPower = getTokenIdBoostPower(tokenId); _ownedBoostPower[msg.sender] -= _plateBoostPower; hayekPlate.transfer(msg.sender, tokenId); } function _addTokenToOwnerEnumeration(address to, uint256 tokenId) private { _ownedTokensIndex[tokenId] = _ownedTokens[to].length; _ownedTokens[to].push(tokenId); } function _addTokenToAllTokensEnumeration(uint256 tokenId) private { _allTokensIndex[tokenId] = _allTokens.length; _allTokens.push(tokenId); } function _removeTokenFromOwnerEnumeration(address from, uint256 tokenId) private { uint256 lastTokenIndex = _ownedTokens[from].length.sub(1); uint256 tokenIndex = _ownedTokensIndex[tokenId]; if (tokenIndex != lastTokenIndex) { uint256 lastTokenId = _ownedTokens[from][lastTokenIndex]; _ownedTokens[from][tokenIndex] = lastTokenId; _ownedTokensIndex[lastTokenId] = tokenIndex; } _ownedTokens[from].pop(); } function _removeTokenFromAllTokensEnumeration(uint256 tokenId) private { uint256 lastTokenIndex = _allTokens.length.sub(1); uint256 tokenIndex = _allTokensIndex[tokenId]; uint256 lastTokenId = _allTokens[lastTokenIndex]; _allTokens[tokenIndex] = lastTokenId; _allTokensIndex[lastTokenId] = tokenIndex; _allTokens.pop(); _allTokensIndex[tokenId] = 0; } function getAccountBoostPower(address account) public view returns(uint256){ return _ownedBoostPower[account]; } function getStakedTokenIds(address account) public view returns(uint256[] memory){ return _ownedTokens[account]; } function getTokenIdBoostPower(uint256 tokenId) internal returns(uint256){ address customDataAddr = hayekPlate.getFeatureAddr(); IHayekPlateCustomData hayekPlateCustomData = IHayekPlateCustomData(customDataAddr); return hayekPlateCustomData.getTokenIdBoostPower(tokenId); } function onERC721Received(address operator, address from, uint256 tokenId, bytes calldata data) external returns (bytes4) { // Shh return _ERC721_RECEIVED; } } contract HCCUSDTPool is HayekPlateWrapper, USDTWrapper, IRewardDistributionRecipient { IERC20 public hayekCash; uint256 public DURATION = 10 days; uint256 public starttime; uint256 public periodFinish = 0; uint256 public rewardRate = 0; uint256 public lastUpdateTime; uint256 public rewardPerTokenStored; mapping(address => uint256) public userRewardPerTokenPaid; mapping(address => uint256) public rewards; mapping(address => uint256) public deposits; event RewardAdded(uint256 reward); event Staked(address indexed user, uint256 amount); event Withdrawn(address indexed user, uint256 amount); event PlateStaked(address indexed user, uint256 tokenId); event PlateWithdrawn(address indexed user, uint256 tokenId); event RewardPaid(address indexed user, uint256 reward); constructor( address hayekCash_, address usdt_, address hayekPlate_, uint256 starttime_ ) public { hayekCash = IERC20(hayekCash_); usdt = IERC20(usdt_); hayekPlate = IHayekPlate(hayekPlate_); starttime = starttime_; } modifier checkStart() { require(block.timestamp >= starttime, 'HCCUSDTPool: not start'); _; } modifier updateReward(address account) { rewardPerTokenStored = rewardPerToken(); lastUpdateTime = lastTimeRewardApplicable(); if (account != address(0)) { rewards[account] = earned(account); userRewardPerTokenPaid[account] = rewardPerTokenStored; } _; } function lastTimeRewardApplicable() public view returns (uint256) { return Math.min(block.timestamp, periodFinish); } function rewardPerToken() public view returns (uint256) { if (totalInternalSupply() == 0) { return rewardPerTokenStored; } return rewardPerTokenStored.add( lastTimeRewardApplicable() .sub(lastUpdateTime) .mul(rewardRate) .mul(1e18) .div(totalInternalSupply()) ); } function earned(address account) public view returns (uint256) { return internalBalanceOf(account) .mul(rewardPerToken().sub(userRewardPerTokenPaid[account])) .div(1e18) .add(rewards[account]); } function stakePlate(uint256 tokenId) public override updateReward(msg.sender) checkStart { require(tokenId > 0, 'HCCUSDTPool: Invalid tokenId'); super.stakePlate(tokenId); uint256 userBoostPower = getAccountBoostPower(msg.sender); _update(userBoostPower); emit PlateStaked(msg.sender, tokenId); } function withdrawPlate(uint256 tokenId) public override updateReward(msg.sender) checkStart { require(tokenId > 0, 'HCCUSDTPool: Invalid tokenId'); super.withdrawPlate(tokenId); uint256 userBoostPower = getAccountBoostPower(msg.sender); _update(userBoostPower); emit PlateWithdrawn(msg.sender, tokenId); } // stake visibility is public as overriding LPTokenWrapper's stake() function function stake(uint256 amount) public updateReward(msg.sender) checkStart { require(amount > 0, 'HCCUSDTPool: Cannot stake 0'); uint256 newDeposit = deposits[msg.sender].add(amount); require( newDeposit <= 20000e6, 'HCCUSDTPool: deposit amount exceeds maximum 20000' ); deposits[msg.sender] = newDeposit; uint256 userBoostPower = getAccountBoostPower(msg.sender); super.stake(amount, userBoostPower); emit Staked(msg.sender, amount); } function withdraw(uint256 amount) public updateReward(msg.sender) checkStart { require(amount > 0, 'HCCUSDTPool: Cannot withdraw 0'); deposits[msg.sender] = deposits[msg.sender].sub(amount); uint256 userBoostPower = getAccountBoostPower(msg.sender); super.withdraw(amount, userBoostPower); emit Withdrawn(msg.sender, amount); } function exit() external { withdraw(balanceOf(msg.sender)); getReward(); } function getReward() public updateReward(msg.sender) checkStart { uint256 reward = earned(msg.sender); if (reward > 0) { rewards[msg.sender] = 0; hayekCash.safeTransfer(msg.sender, reward); emit RewardPaid(msg.sender, reward); } } function notifyRewardAmount(uint256 reward) external override onlyRewardDistribution updateReward(address(0)) { if (block.timestamp > starttime) { if (block.timestamp >= periodFinish) { rewardRate = reward.div(DURATION); } else { uint256 remaining = periodFinish.sub(block.timestamp); uint256 leftover = remaining.mul(rewardRate); rewardRate = reward.add(leftover).div(DURATION); } lastUpdateTime = block.timestamp; periodFinish = block.timestamp.add(DURATION); emit RewardAdded(reward); } else { rewardRate = reward.div(DURATION); lastUpdateTime = starttime; periodFinish = starttime.add(DURATION); emit RewardAdded(reward); } } }
pragma solidity ^0.6.0; /** *Submitted for verification at Etherscan.io on 2020-07-17 */ /* ____ __ __ __ _ / __/__ __ ___ / /_ / / ___ / /_ (_)__ __ _\ \ / // // _ \/ __// _ \/ -_)/ __// / \ \ / /___/ \_, //_//_/\__//_//_/\__/ \__//_/ /_\_\ /___/ * Synthetix: HAYEKCASHRewards.sol * * Docs: https://docs.synthetix.io/ * * * MIT License * =========== * * Copyright (c) 2020 Synthetix * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all * copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE */ // File: @openzeppelin/contracts/math/Math.sol import '@openzeppelin/contracts/math/Math.sol'; // File: @openzeppelin/contracts/math/SafeMath.sol import '@openzeppelin/contracts/math/SafeMath.sol'; // File: @openzeppelin/contracts/token/ERC20/IERC20.sol import '@openzeppelin/contracts/token/ERC20/IERC20.sol'; // File: @openzeppelin/contracts/utils/Address.sol import '@openzeppelin/contracts/utils/Address.sol'; // File: @openzeppelin/contracts/token/ERC20/SafeERC20.sol import '@openzeppelin/contracts/token/ERC20/SafeERC20.sol'; // File: contracts/IRewardDistributionRecipient.sol import '../interfaces/IRewardDistributionRecipient.sol'; contract USDCWrapper { using SafeMath for uint256; using SafeERC20 for IERC20; IERC20 public usdc; uint256 private _totalSupply; uint256 private _totalInternalSupply; mapping(address => uint256) private _balances; mapping(address => uint256) private _internalBalances; function totalInternalSupply() public view returns (uint256) { return _totalInternalSupply; } function totalSupply() public view returns (uint256) { return _totalSupply; } function internalBalanceOf(address account) public view returns (uint256) { return _internalBalances[account]; } function balanceOf(address account) public view returns (uint256) { return _balances[account]; } function stake(uint256 amount, uint256 userBoostPower) internal { _totalSupply = _totalSupply.add(amount); _totalInternalSupply = _totalInternalSupply.add(amount.mul(userBoostPower.add(1e18)).div(1e18)); _balances[msg.sender] = _balances[msg.sender].add(amount); _internalBalances[msg.sender] = _internalBalances[msg.sender].add((amount.mul(userBoostPower.add(1e18)).div(1e18))); usdc.safeTransferFrom(msg.sender, address(this), amount); } function withdraw(uint256 amount, uint256 userBoostPower) internal { _totalSupply = _totalSupply.sub(amount); _totalInternalSupply = _totalInternalSupply.sub(amount.mul(userBoostPower.add(1e18)).div(1e18)); _balances[msg.sender] = _balances[msg.sender].sub(amount); _internalBalances[msg.sender] = _internalBalances[msg.sender].sub((amount.mul(userBoostPower.add(1e18)).div(1e18))); usdc.safeTransfer(msg.sender, amount); } function _update(uint256 _userBoostPower) internal { uint256 oldInternalBalance = _internalBalances[msg.sender]; uint256 newInternalBalance = _balances[msg.sender].mul(_userBoostPower.add(1e18)).div(1e18); _internalBalances[msg.sender] = newInternalBalance; _totalInternalSupply = _totalInternalSupply.sub(oldInternalBalance).add(newInternalBalance); } } interface IHayekPlate { function ownerOf(uint256 tokenId) external view returns (address); function transfer(address _to, uint256 _tokenId) external; function safeTransferFrom(address from, address to, uint256 tokenId) external; function getFeatureAddr() external returns(address); } interface IHayekPlateCustomData { function getTokenIdBoostPower(uint256 tokenId) external view returns(uint256); } contract HayekPlateWrapper { using SafeMath for uint256; IHayekPlate public hayekPlate; bytes4 private constant _ERC721_RECEIVED = 0x150b7a02; mapping(address => uint256[]) private _ownedTokens; mapping(uint256 => uint256) private _ownedTokensIndex; mapping(address => uint256) private _ownedBoostPower; mapping (uint256 => address) private _tokenOwner; uint256[] private _allTokens; mapping(uint256 => uint256) private _allTokensIndex; function totalNFTSupply() public view returns (uint256) { return _allTokens.length; } function stakePlate(uint256 tokenId) public virtual { require(msg.sender == hayekPlate.ownerOf(tokenId), 'This account is not owner'); _tokenOwner[tokenId] = msg.sender; _addTokenToOwnerEnumeration(msg.sender, tokenId); _addTokenToAllTokensEnumeration(tokenId); uint256 _plateBoostPower = getTokenIdBoostPower(tokenId); _ownedBoostPower[msg.sender] += _plateBoostPower; hayekPlate.safeTransferFrom(msg.sender, address(this), tokenId); } function withdrawPlate(uint256 tokenId) public virtual { require(msg.sender == _tokenOwner[tokenId], 'This account is not owner'); _removeTokenFromOwnerEnumeration(msg.sender, tokenId); _removeTokenFromAllTokensEnumeration(tokenId); uint256 _plateBoostPower = getTokenIdBoostPower(tokenId); _ownedBoostPower[msg.sender] -= _plateBoostPower; hayekPlate.transfer(msg.sender, tokenId); } function _addTokenToOwnerEnumeration(address to, uint256 tokenId) private { _ownedTokensIndex[tokenId] = _ownedTokens[to].length; _ownedTokens[to].push(tokenId); } function _addTokenToAllTokensEnumeration(uint256 tokenId) private { _allTokensIndex[tokenId] = _allTokens.length; _allTokens.push(tokenId); } function _removeTokenFromOwnerEnumeration(address from, uint256 tokenId) private { uint256 lastTokenIndex = _ownedTokens[from].length.sub(1); uint256 tokenIndex = _ownedTokensIndex[tokenId]; if (tokenIndex != lastTokenIndex) { uint256 lastTokenId = _ownedTokens[from][lastTokenIndex]; _ownedTokens[from][tokenIndex] = lastTokenId; _ownedTokensIndex[lastTokenId] = tokenIndex; } _ownedTokens[from].pop(); } function _removeTokenFromAllTokensEnumeration(uint256 tokenId) private { uint256 lastTokenIndex = _allTokens.length.sub(1); uint256 tokenIndex = _allTokensIndex[tokenId]; uint256 lastTokenId = _allTokens[lastTokenIndex]; _allTokens[tokenIndex] = lastTokenId; _allTokensIndex[lastTokenId] = tokenIndex; _allTokens.pop(); _allTokensIndex[tokenId] = 0; } function getAccountBoostPower(address account) public view returns(uint256){ return _ownedBoostPower[account]; } function getTokenIdBoostPower(uint256 tokenId) internal returns(uint256){ address customDataAddr = hayekPlate.getFeatureAddr(); IHayekPlateCustomData hayekPlateCustomData = IHayekPlateCustomData(customDataAddr); return hayekPlateCustomData.getTokenIdBoostPower(tokenId); } function getStakedTokenIds(address account) public view returns(uint256[] memory){ return _ownedTokens[account]; } function onERC721Received(address operator, address from, uint256 tokenId, bytes calldata data) external returns (bytes4) { // Shh return _ERC721_RECEIVED; } } contract HCCUSDCPool is HayekPlateWrapper, USDCWrapper, IRewardDistributionRecipient { IERC20 public hayekCash; uint256 public DURATION = 10 days; uint256 public starttime; uint256 public periodFinish = 0; uint256 public rewardRate = 0; uint256 public lastUpdateTime; uint256 public rewardPerTokenStored; mapping(address => uint256) public userRewardPerTokenPaid; mapping(address => uint256) public rewards; mapping(address => uint256) public deposits; event RewardAdded(uint256 reward); event Staked(address indexed user, uint256 amount); event Withdrawn(address indexed user, uint256 amount); event PlateStaked(address indexed user, uint256 tokenId); event PlateWithdrawn(address indexed user, uint256 tokenId); event RewardPaid(address indexed user, uint256 reward); constructor( address hayekCash_, address usdc_, address hayekPlate_, uint256 starttime_ ) public { hayekCash = IERC20(hayekCash_); usdc = IERC20(usdc_); hayekPlate = IHayekPlate(hayekPlate_); starttime = starttime_; } modifier checkStart() { require(block.timestamp >= starttime, 'HCCUSDCPool: not start'); _; } modifier updateReward(address account) { rewardPerTokenStored = rewardPerToken(); lastUpdateTime = lastTimeRewardApplicable(); if (account != address(0)) { rewards[account] = earned(account); userRewardPerTokenPaid[account] = rewardPerTokenStored; } _; } function lastTimeRewardApplicable() public view returns (uint256) { return Math.min(block.timestamp, periodFinish); } function rewardPerToken() public view returns (uint256) { if (totalInternalSupply() == 0) { return rewardPerTokenStored; } return rewardPerTokenStored.add( lastTimeRewardApplicable() .sub(lastUpdateTime) .mul(rewardRate) .mul(1e18) .div(totalInternalSupply()) ); } function earned(address account) public view returns (uint256) { return internalBalanceOf(account) .mul(rewardPerToken().sub(userRewardPerTokenPaid[account])) .div(1e18) .add(rewards[account]); } function stakePlate(uint256 tokenId) public override updateReward(msg.sender) checkStart { require(tokenId > 0, 'HCCUSDCPool: Invalid tokenId'); super.stakePlate(tokenId); uint256 userBoostPower = getAccountBoostPower(msg.sender); _update(userBoostPower); emit PlateStaked(msg.sender, tokenId); } function withdrawPlate(uint256 tokenId) public override updateReward(msg.sender) checkStart { require(tokenId > 0, 'HCCUSDCPool: Invalid tokenId'); super.withdrawPlate(tokenId); uint256 userBoostPower = getAccountBoostPower(msg.sender); _update(userBoostPower); emit PlateWithdrawn(msg.sender, tokenId); } // stake visibility is public as overriding LPTokenWrapper's stake() function function stake(uint256 amount) public updateReward(msg.sender) checkStart { require(amount > 0, 'HCCUSDCPool: Cannot stake 0'); uint256 newDeposit = deposits[msg.sender].add(amount); require( newDeposit <= 20000e6, 'HCCUSDCPool: deposit amount exceeds maximum 20000' ); deposits[msg.sender] = newDeposit; uint256 userBoostPower = getAccountBoostPower(msg.sender); super.stake(amount, userBoostPower); emit Staked(msg.sender, amount); } function withdraw(uint256 amount) public updateReward(msg.sender) checkStart { require(amount > 0, 'HCCUSDCPool: Cannot withdraw 0'); deposits[msg.sender] = deposits[msg.sender].sub(amount); uint256 userBoostPower = getAccountBoostPower(msg.sender); super.withdraw(amount, userBoostPower); emit Withdrawn(msg.sender, amount); } function exit() external { withdraw(balanceOf(msg.sender)); getReward(); } function getReward() public updateReward(msg.sender) checkStart { uint256 reward = earned(msg.sender); if (reward > 0) { rewards[msg.sender] = 0; hayekCash.safeTransfer(msg.sender, reward); emit RewardPaid(msg.sender, reward); } } function notifyRewardAmount(uint256 reward) external override onlyRewardDistribution updateReward(address(0)) { if (block.timestamp > starttime) { if (block.timestamp >= periodFinish) { rewardRate = reward.div(DURATION); } else { uint256 remaining = periodFinish.sub(block.timestamp); uint256 leftover = remaining.mul(rewardRate); rewardRate = reward.add(leftover).div(DURATION); } lastUpdateTime = block.timestamp; periodFinish = block.timestamp.add(DURATION); emit RewardAdded(reward); } else { rewardRate = reward.div(DURATION); lastUpdateTime = starttime; periodFinish = starttime.add(DURATION); emit RewardAdded(reward); } } }
pragma solidity ^0.6.0; /** *Submitted for verification at Etherscan.io on 2020-07-17 */ /* ____ __ __ __ _ / __/__ __ ___ / /_ / / ___ / /_ (_)__ __ _\ \ / // // _ \/ __// _ \/ -_)/ __// / \ \ / /___/ \_, //_//_/\__//_//_/\__/ \__//_/ /_\_\ /___/ * Synthetix: HAYEKCASHRewards.sol * * Docs: https://docs.synthetix.io/ * * * MIT License * =========== * * Copyright (c) 2020 Synthetix * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all * copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE */ // File: @openzeppelin/contracts/math/Math.sol import '@openzeppelin/contracts/math/Math.sol'; // File: @openzeppelin/contracts/math/SafeMath.sol import '@openzeppelin/contracts/math/SafeMath.sol'; // File: @openzeppelin/contracts/token/ERC20/IERC20.sol import '@openzeppelin/contracts/token/ERC20/IERC20.sol'; // File: @openzeppelin/contracts/utils/Address.sol import '@openzeppelin/contracts/utils/Address.sol'; // File: @openzeppelin/contracts/token/ERC20/SafeERC20.sol import '@openzeppelin/contracts/token/ERC20/SafeERC20.sol'; // File: contracts/IRewardDistributionRecipient.sol import '../interfaces/IRewardDistributionRecipient.sol'; contract UNIWrapper { using SafeMath for uint256; using SafeERC20 for IERC20; IERC20 public uni; uint256 private _totalSupply; uint256 private _totalInternalSupply; mapping(address => uint256) private _balances; mapping(address => uint256) private _internalBalances; function totalInternalSupply() public view returns (uint256) { return _totalInternalSupply; } function totalSupply() public view returns (uint256) { return _totalSupply; } function internalBalanceOf(address account) public view returns (uint256) { return _internalBalances[account]; } function balanceOf(address account) public view returns (uint256) { return _balances[account]; } function stake(uint256 amount, uint256 userBoostPower) internal { _totalSupply = _totalSupply.add(amount); _totalInternalSupply = _totalInternalSupply.add(amount.mul(userBoostPower.add(1e18)).div(1e18)); _balances[msg.sender] = _balances[msg.sender].add(amount); _internalBalances[msg.sender] = _internalBalances[msg.sender].add((amount.mul(userBoostPower.add(1e18)).div(1e18))); uni.safeTransferFrom(msg.sender, address(this), amount); } function withdraw(uint256 amount, uint256 userBoostPower) internal { _totalSupply = _totalSupply.sub(amount); _totalInternalSupply = _totalInternalSupply.sub(amount.mul(userBoostPower.add(1e18)).div(1e18)); _balances[msg.sender] = _balances[msg.sender].sub(amount); _internalBalances[msg.sender] = _internalBalances[msg.sender].sub((amount.mul(userBoostPower.add(1e18)).div(1e18))); uni.safeTransfer(msg.sender, amount); } function _update(uint256 _userBoostPower) internal { uint256 oldInternalBalance = _internalBalances[msg.sender]; uint256 newInternalBalance = _balances[msg.sender].mul(_userBoostPower.add(1e18)).div(1e18); _internalBalances[msg.sender] = newInternalBalance; _totalInternalSupply = _totalInternalSupply.sub(oldInternalBalance).add(newInternalBalance); } } interface IHayekPlate { function ownerOf(uint256 tokenId) external view returns (address); function transfer(address _to, uint256 _tokenId) external; function safeTransferFrom(address from, address to, uint256 tokenId) external; function getFeatureAddr() external returns(address); } interface IHayekPlateCustomData { function getTokenIdBoostPower(uint256 tokenId) external view returns(uint256); } contract HayekPlateWrapper { using SafeMath for uint256; IHayekPlate public hayekPlate; bytes4 private constant _ERC721_RECEIVED = 0x150b7a02; mapping(address => uint256[]) private _ownedTokens; mapping(uint256 => uint256) private _ownedTokensIndex; mapping(address => uint256) private _ownedBoostPower; mapping (uint256 => address) private _tokenOwner; uint256[] private _allTokens; mapping(uint256 => uint256) private _allTokensIndex; function totalNFTSupply() public view returns (uint256) { return _allTokens.length; } function stakePlate(uint256 tokenId) public virtual { require(msg.sender == hayekPlate.ownerOf(tokenId), 'This account is not owner'); _tokenOwner[tokenId] = msg.sender; _addTokenToOwnerEnumeration(msg.sender, tokenId); _addTokenToAllTokensEnumeration(tokenId); uint256 _plateBoostPower = getTokenIdBoostPower(tokenId); _ownedBoostPower[msg.sender] += _plateBoostPower; hayekPlate.safeTransferFrom(msg.sender, address(this), tokenId); } function withdrawPlate(uint256 tokenId) public virtual { require(msg.sender == _tokenOwner[tokenId], 'This account is not owner'); _removeTokenFromOwnerEnumeration(msg.sender, tokenId); _removeTokenFromAllTokensEnumeration(tokenId); uint256 _plateBoostPower = getTokenIdBoostPower(tokenId); _ownedBoostPower[msg.sender] -= _plateBoostPower; hayekPlate.transfer(msg.sender, tokenId); } function _addTokenToOwnerEnumeration(address to, uint256 tokenId) private { _ownedTokensIndex[tokenId] = _ownedTokens[to].length; _ownedTokens[to].push(tokenId); } function _addTokenToAllTokensEnumeration(uint256 tokenId) private { _allTokensIndex[tokenId] = _allTokens.length; _allTokens.push(tokenId); } function _removeTokenFromOwnerEnumeration(address from, uint256 tokenId) private { uint256 lastTokenIndex = _ownedTokens[from].length.sub(1); uint256 tokenIndex = _ownedTokensIndex[tokenId]; if (tokenIndex != lastTokenIndex) { uint256 lastTokenId = _ownedTokens[from][lastTokenIndex]; _ownedTokens[from][tokenIndex] = lastTokenId; _ownedTokensIndex[lastTokenId] = tokenIndex; } _ownedTokens[from].pop(); } function _removeTokenFromAllTokensEnumeration(uint256 tokenId) private { uint256 lastTokenIndex = _allTokens.length.sub(1); uint256 tokenIndex = _allTokensIndex[tokenId]; uint256 lastTokenId = _allTokens[lastTokenIndex]; _allTokens[tokenIndex] = lastTokenId; _allTokensIndex[lastTokenId] = tokenIndex; _allTokens.pop(); _allTokensIndex[tokenId] = 0; } function getAccountBoostPower(address account) public view returns(uint256){ return _ownedBoostPower[account]; } function getTokenIdBoostPower(uint256 tokenId) internal returns(uint256){ address customDataAddr = hayekPlate.getFeatureAddr(); IHayekPlateCustomData hayekPlateCustomData = IHayekPlateCustomData(customDataAddr); return hayekPlateCustomData.getTokenIdBoostPower(tokenId); } function getStakedTokenIds(address account) public view returns(uint256[] memory){ return _ownedTokens[account]; } function onERC721Received(address operator, address from, uint256 tokenId, bytes calldata data) external returns (bytes4) { // Shh return _ERC721_RECEIVED; } } contract HCCUNIPool is HayekPlateWrapper, UNIWrapper, IRewardDistributionRecipient { IERC20 public hayekCash; uint256 public DURATION = 10 days; uint256 public starttime; uint256 public periodFinish = 0; uint256 public rewardRate = 0; uint256 public lastUpdateTime; uint256 public rewardPerTokenStored; mapping(address => uint256) public userRewardPerTokenPaid; mapping(address => uint256) public rewards; mapping(address => uint256) public deposits; event RewardAdded(uint256 reward); event Staked(address indexed user, uint256 amount); event Withdrawn(address indexed user, uint256 amount); event PlateStaked(address indexed user, uint256 tokenId); event PlateWithdrawn(address indexed user, uint256 tokenId); event RewardPaid(address indexed user, uint256 reward); constructor( address hayekCash_, address uni_, address hayekPlate_, uint256 starttime_ ) public { hayekCash = IERC20(hayekCash_); uni = IERC20(uni_); hayekPlate = IHayekPlate(hayekPlate_); starttime = starttime_; } modifier checkStart() { require(block.timestamp >= starttime, 'HCCUNIPool: not start'); _; } modifier updateReward(address account) { rewardPerTokenStored = rewardPerToken(); lastUpdateTime = lastTimeRewardApplicable(); if (account != address(0)) { rewards[account] = earned(account); userRewardPerTokenPaid[account] = rewardPerTokenStored; } _; } function lastTimeRewardApplicable() public view returns (uint256) { return Math.min(block.timestamp, periodFinish); } function rewardPerToken() public view returns (uint256) { if (totalInternalSupply() == 0) { return rewardPerTokenStored; } return rewardPerTokenStored.add( lastTimeRewardApplicable() .sub(lastUpdateTime) .mul(rewardRate) .mul(1e18) .div(totalInternalSupply()) ); } function earned(address account) public view returns (uint256) { return internalBalanceOf(account) .mul(rewardPerToken().sub(userRewardPerTokenPaid[account])) .div(1e18) .add(rewards[account]); } function stakePlate(uint256 tokenId) public override updateReward(msg.sender) checkStart { require(tokenId > 0, 'HCCUNIPool: Invalid tokenId'); super.stakePlate(tokenId); uint256 userBoostPower = getAccountBoostPower(msg.sender); _update(userBoostPower); emit PlateStaked(msg.sender, tokenId); } function withdrawPlate(uint256 tokenId) public override updateReward(msg.sender) checkStart { require(tokenId > 0, 'HCCUNIPool: Invalid tokenId'); super.withdrawPlate(tokenId); uint256 userBoostPower = getAccountBoostPower(msg.sender); _update(userBoostPower); emit PlateWithdrawn(msg.sender, tokenId); } // stake visibility is public as overriding LPTokenWrapper's stake() function function stake(uint256 amount) public updateReward(msg.sender) checkStart { require(amount > 0, 'HCCUNIPool: Cannot stake 0'); uint256 newDeposit = deposits[msg.sender].add(amount); require( newDeposit <= 1000e18, 'HCCUNIPool: deposit amount exceeds maximum 1000' ); deposits[msg.sender] = newDeposit; uint256 userBoostPower = getAccountBoostPower(msg.sender); super.stake(amount, userBoostPower); emit Staked(msg.sender, amount); } function withdraw(uint256 amount) public updateReward(msg.sender) checkStart { require(amount > 0, 'HCCUNIPool: Cannot withdraw 0'); deposits[msg.sender] = deposits[msg.sender].sub(amount); uint256 userBoostPower = getAccountBoostPower(msg.sender); super.withdraw(amount, userBoostPower); emit Withdrawn(msg.sender, amount); } function exit() external { withdraw(balanceOf(msg.sender)); getReward(); } function getReward() public updateReward(msg.sender) checkStart { uint256 reward = earned(msg.sender); if (reward > 0) { rewards[msg.sender] = 0; hayekCash.safeTransfer(msg.sender, reward); emit RewardPaid(msg.sender, reward); } } function notifyRewardAmount(uint256 reward) external override onlyRewardDistribution updateReward(address(0)) { if (block.timestamp > starttime) { if (block.timestamp >= periodFinish) { rewardRate = reward.div(DURATION); } else { uint256 remaining = periodFinish.sub(block.timestamp); uint256 leftover = remaining.mul(rewardRate); rewardRate = reward.add(leftover).div(DURATION); } lastUpdateTime = block.timestamp; periodFinish = block.timestamp.add(DURATION); emit RewardAdded(reward); } else { rewardRate = reward.div(DURATION); lastUpdateTime = starttime; periodFinish = starttime.add(DURATION); emit RewardAdded(reward); } } }
pragma solidity ^0.6.0; /** *Submitted for verification at Etherscan.io on 2020-07-17 */ /* ____ __ __ __ _ / __/__ __ ___ / /_ / / ___ / /_ (_)__ __ _\ \ / // // _ \/ __// _ \/ -_)/ __// / \ \ / /___/ \_, //_//_/\__//_//_/\__/ \__//_/ /_\_\ /___/ * Synthetix: HAYEKCASHRewards.sol * * Docs: https://docs.synthetix.io/ * * * MIT License * =========== * * Copyright (c) 2020 Synthetix * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all * copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE */ // File: @openzeppelin/contracts/math/Math.sol import '@openzeppelin/contracts/math/Math.sol'; // File: @openzeppelin/contracts/math/SafeMath.sol import '@openzeppelin/contracts/math/SafeMath.sol'; // File: @openzeppelin/contracts/token/ERC20/IERC20.sol import '@openzeppelin/contracts/token/ERC20/IERC20.sol'; // File: @openzeppelin/contracts/utils/Address.sol import '@openzeppelin/contracts/utils/Address.sol'; // File: @openzeppelin/contracts/token/ERC20/SafeERC20.sol import '@openzeppelin/contracts/token/ERC20/SafeERC20.sol'; // File: contracts/IRewardDistributionRecipient.sol import '../interfaces/IRewardDistributionRecipient.sol'; import '../token/LPTokenWrapper.sol'; interface IHayekPlate { function ownerOf(uint256 tokenId) external view returns (address); function transfer(address _to, uint256 _tokenId) external; function safeTransferFrom(address from, address to, uint256 tokenId) external; function getFeatureAddr() external returns(address); } interface IHayekPlateCustomData { function getTokenIdBoostPower(uint256 tokenId) external view returns(uint256); } contract HayekPlateWrapper { using SafeMath for uint256; IHayekPlate public hayekPlate; bytes4 private constant _ERC721_RECEIVED = 0x150b7a02; mapping(address => uint256[]) private _ownedTokens; mapping(uint256 => uint256) private _ownedTokensIndex; mapping(address => uint256) private _ownedBoostPower; mapping (uint256 => address) private _tokenOwner; uint256[] private _allTokens; mapping(uint256 => uint256) private _allTokensIndex; function totalNFTSupply() public view returns (uint256) { return _allTokens.length; } function stakePlate(uint256 tokenId) public virtual { require(msg.sender == hayekPlate.ownerOf(tokenId), 'This account is not owner'); _tokenOwner[tokenId] = msg.sender; _addTokenToOwnerEnumeration(msg.sender, tokenId); _addTokenToAllTokensEnumeration(tokenId); uint256 _plateBoostPower = getTokenIdBoostPower(tokenId); _ownedBoostPower[msg.sender] += _plateBoostPower; hayekPlate.safeTransferFrom(msg.sender, address(this), tokenId); } function withdrawPlate(uint256 tokenId) public virtual { require(msg.sender == _tokenOwner[tokenId], 'This account is not owner'); _removeTokenFromOwnerEnumeration(msg.sender, tokenId); _removeTokenFromAllTokensEnumeration(tokenId); uint256 _plateBoostPower = getTokenIdBoostPower(tokenId); _ownedBoostPower[msg.sender] -= _plateBoostPower; hayekPlate.transfer(msg.sender, tokenId); } function _addTokenToOwnerEnumeration(address to, uint256 tokenId) private { _ownedTokensIndex[tokenId] = _ownedTokens[to].length; _ownedTokens[to].push(tokenId); } function _addTokenToAllTokensEnumeration(uint256 tokenId) private { _allTokensIndex[tokenId] = _allTokens.length; _allTokens.push(tokenId); } function _removeTokenFromOwnerEnumeration(address from, uint256 tokenId) private { uint256 lastTokenIndex = _ownedTokens[from].length.sub(1); uint256 tokenIndex = _ownedTokensIndex[tokenId]; if (tokenIndex != lastTokenIndex) { uint256 lastTokenId = _ownedTokens[from][lastTokenIndex]; _ownedTokens[from][tokenIndex] = lastTokenId; _ownedTokensIndex[lastTokenId] = tokenIndex; } _ownedTokens[from].pop(); } function _removeTokenFromAllTokensEnumeration(uint256 tokenId) private { uint256 lastTokenIndex = _allTokens.length.sub(1); uint256 tokenIndex = _allTokensIndex[tokenId]; uint256 lastTokenId = _allTokens[lastTokenIndex]; _allTokens[tokenIndex] = lastTokenId; _allTokensIndex[lastTokenId] = tokenIndex; _allTokens.pop(); _allTokensIndex[tokenId] = 0; } function getAccountBoostPower(address account) public view returns(uint256){ return _ownedBoostPower[account]; } function getStakedTokenIds(address account) public view returns(uint256[] memory){ return _ownedTokens[account]; } function getTokenIdBoostPower(uint256 tokenId) internal returns(uint256){ address customDataAddr = hayekPlate.getFeatureAddr(); IHayekPlateCustomData hayekPlateCustomData = IHayekPlateCustomData(customDataAddr); return hayekPlateCustomData.getTokenIdBoostPower(tokenId); } function onERC721Received(address operator, address from, uint256 tokenId, bytes calldata data) external returns (bytes4) { // Shh return _ERC721_RECEIVED; } } contract DAIHCSLPTokenSharePool is LPTokenWrapper, HayekPlateWrapper, IRewardDistributionRecipient { IERC20 public hayekShare; uint256 public DURATION = 365 days; uint256 public starttime; uint256 public periodFinish = 0; uint256 public rewardRate = 0; uint256 public lastUpdateTime; uint256 public rewardPerTokenStored; mapping(address => uint256) public userRewardPerTokenPaid; mapping(address => uint256) public rewards; event RewardAdded(uint256 reward); event Staked(address indexed user, uint256 amount); event Withdrawn(address indexed user, uint256 amount); event PlateStaked(address indexed user, uint256 tokenId); event PlateWithdrawn(address indexed user, uint256 tokenId); event RewardPaid(address indexed user, uint256 reward); constructor( address hayekShare_, address lptoken_, address hayekPlate_, uint256 starttime_ ) public { hayekShare = IERC20(hayekShare_); lpt = IERC20(lptoken_); hayekPlate = IHayekPlate(hayekPlate_); starttime = starttime_; } modifier checkStart() { require( block.timestamp >= starttime, 'DAIHCSLPTokenSharePool: not start' ); _; } modifier updateReward(address account) { rewardPerTokenStored = rewardPerToken(); lastUpdateTime = lastTimeRewardApplicable(); if (account != address(0)) { rewards[account] = earned(account); userRewardPerTokenPaid[account] = rewardPerTokenStored; } _; } function lastTimeRewardApplicable() public view returns (uint256) { return Math.min(block.timestamp, periodFinish); } function rewardPerToken() public view returns (uint256) { if (totalInternalSupply() == 0) { return rewardPerTokenStored; } return rewardPerTokenStored.add( lastTimeRewardApplicable() .sub(lastUpdateTime) .mul(rewardRate) .mul(1e18) .div(totalInternalSupply()) ); } function earned(address account) public view returns (uint256) { return internalBalanceOf(account) .mul(rewardPerToken().sub(userRewardPerTokenPaid[account])) .div(1e18) .add(rewards[account]); } function stakePlate(uint256 tokenId) public override updateReward(msg.sender) checkStart { require(tokenId > 0, 'DAIHCSLPTokenSharePool: Invalid tokenId'); super.stakePlate(tokenId); uint256 userBoostPower = getAccountBoostPower(msg.sender); _update(userBoostPower); emit PlateStaked(msg.sender, tokenId); } function withdrawPlate(uint256 tokenId) public override updateReward(msg.sender) checkStart { require(tokenId > 0, 'DAIHCSLPTokenSharePool: Invalid tokenId'); super.withdrawPlate(tokenId); uint256 userBoostPower = getAccountBoostPower(msg.sender); _update(userBoostPower); emit PlateWithdrawn(msg.sender, tokenId); } // stake visibility is public as overriding LPTokenWrapper's stake() function function stake(uint256 amount) public updateReward(msg.sender) checkStart { require(amount > 0, 'DAIHCSLPTokenSharePool: Cannot stake 0'); uint256 userBoostPower = getAccountBoostPower(msg.sender); super.stake(amount, userBoostPower); emit Staked(msg.sender, amount); } function withdraw(uint256 amount) public updateReward(msg.sender) checkStart { require(amount > 0, 'DAIHCSLPTokenSharePool: Cannot withdraw 0'); uint256 userBoostPower = getAccountBoostPower(msg.sender); super.withdraw(amount, userBoostPower); emit Withdrawn(msg.sender, amount); } function exit() external { withdraw(balanceOf(msg.sender)); getReward(); } function getReward() public updateReward(msg.sender) checkStart { uint256 reward = earned(msg.sender); if (reward > 0) { rewards[msg.sender] = 0; hayekShare.safeTransfer(msg.sender, reward); emit RewardPaid(msg.sender, reward); } } function notifyRewardAmount(uint256 reward) external override onlyRewardDistribution updateReward(address(0)) { if (block.timestamp > starttime) { if (block.timestamp >= periodFinish) { rewardRate = reward.div(DURATION); } else { uint256 remaining = periodFinish.sub(block.timestamp); uint256 leftover = remaining.mul(rewardRate); rewardRate = reward.add(leftover).div(DURATION); } lastUpdateTime = block.timestamp; periodFinish = block.timestamp.add(DURATION); emit RewardAdded(reward); } else { rewardRate = reward.div(DURATION); lastUpdateTime = starttime; periodFinish = starttime.add(DURATION); emit RewardAdded(reward); } } }
pragma solidity ^0.6.0; import '@openzeppelin/contracts/math/SafeMath.sol'; import '@openzeppelin/contracts/token/ERC20/SafeERC20.sol'; import '@openzeppelin/contracts/token/ERC20/IERC20.sol'; contract LPTokenWrapper { using SafeMath for uint256; using SafeERC20 for IERC20; IERC20 public lpt; uint256 private _totalSupply; uint256 private _totalInternalSupply; mapping(address => uint256) private _balances; mapping(address => uint256) private _internalBalances; function totalInternalSupply() public view returns (uint256) { return _totalInternalSupply; } function totalSupply() public view returns (uint256) { return _totalSupply; } function internalBalanceOf(address account) public view returns (uint256) { return _internalBalances[account]; } function balanceOf(address account) public view returns (uint256) { return _balances[account]; } function stake(uint256 amount, uint256 userBoostPower) internal { _totalSupply = _totalSupply.add(amount); _totalInternalSupply = _totalInternalSupply.add(amount.mul(userBoostPower.add(1e18)).div(1e18)); _balances[msg.sender] = _balances[msg.sender].add(amount); _internalBalances[msg.sender] = _internalBalances[msg.sender].add((amount.mul(userBoostPower.add(1e18)).div(1e18))); lpt.safeTransferFrom(msg.sender, address(this), amount); } function withdraw(uint256 amount, uint256 userBoostPower) internal { _totalSupply = _totalSupply.sub(amount); _totalInternalSupply = _totalInternalSupply.sub(amount.mul(userBoostPower.add(1e18)).div(1e18)); _balances[msg.sender] = _balances[msg.sender].sub(amount); _internalBalances[msg.sender] = _internalBalances[msg.sender].sub((amount.mul(userBoostPower.add(1e18)).div(1e18))); lpt.safeTransfer(msg.sender, amount); } function _update(uint256 _userBoostPower) internal { uint256 oldInternalBalance = _internalBalances[msg.sender]; uint256 newInternalBalance = _balances[msg.sender].mul(_userBoostPower.add(1e18)).div(1e18); _internalBalances[msg.sender] = newInternalBalance; _totalInternalSupply = _totalInternalSupply.sub(oldInternalBalance).add(newInternalBalance); } }
pragma solidity ^0.6.0; /** *Submitted for verification at Etherscan.io on 2020-07-17 */ /* ____ __ __ __ _ / __/__ __ ___ / /_ / / ___ / /_ (_)__ __ _\ \ / // // _ \/ __// _ \/ -_)/ __// / \ \ / /___/ \_, //_//_/\__//_//_/\__/ \__//_/ /_\_\ /___/ * Synthetix: HAYEKCASHRewards.sol * * Docs: https://docs.synthetix.io/ * * * MIT License * =========== * * Copyright (c) 2020 Synthetix * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all * copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE */ // File: @openzeppelin/contracts/math/Math.sol import '@openzeppelin/contracts/math/Math.sol'; // File: @openzeppelin/contracts/math/SafeMath.sol import '@openzeppelin/contracts/math/SafeMath.sol'; // File: @openzeppelin/contracts/token/ERC20/IERC20.sol import '@openzeppelin/contracts/token/ERC20/IERC20.sol'; // File: @openzeppelin/contracts/utils/Address.sol import '@openzeppelin/contracts/utils/Address.sol'; // File: @openzeppelin/contracts/token/ERC20/SafeERC20.sol import '@openzeppelin/contracts/token/ERC20/SafeERC20.sol'; // File: contracts/IRewardDistributionRecipient.sol import '../interfaces/IRewardDistributionRecipient.sol'; import '../token/LPTokenWrapper.sol'; interface IHayekPlate { function ownerOf(uint256 tokenId) external view returns (address); function transfer(address _to, uint256 _tokenId) external; function safeTransferFrom(address from, address to, uint256 tokenId) external; function getFeatureAddr() external returns(address); } interface IHayekPlateCustomData { function getTokenIdBoostPower(uint256 tokenId) external view returns(uint256); } contract HayekPlateWrapper { using SafeMath for uint256; IHayekPlate public hayekPlate; bytes4 private constant _ERC721_RECEIVED = 0x150b7a02; mapping(address => uint256[]) private _ownedTokens; mapping(uint256 => uint256) private _ownedTokensIndex; mapping(address => uint256) private _ownedBoostPower; mapping (uint256 => address) private _tokenOwner; uint256[] private _allTokens; mapping(uint256 => uint256) private _allTokensIndex; function totalNFTSupply() public view returns (uint256) { return _allTokens.length; } function stakePlate(uint256 tokenId) public virtual { require(msg.sender == hayekPlate.ownerOf(tokenId), 'This account is not owner'); _tokenOwner[tokenId] = msg.sender; _addTokenToOwnerEnumeration(msg.sender, tokenId); _addTokenToAllTokensEnumeration(tokenId); uint256 _plateBoostPower = getTokenIdBoostPower(tokenId); _ownedBoostPower[msg.sender] += _plateBoostPower; hayekPlate.safeTransferFrom(msg.sender, address(this), tokenId); } function withdrawPlate(uint256 tokenId) public virtual { require(msg.sender == _tokenOwner[tokenId], 'This account is not owner'); _removeTokenFromOwnerEnumeration(msg.sender, tokenId); _removeTokenFromAllTokensEnumeration(tokenId); uint256 _plateBoostPower = getTokenIdBoostPower(tokenId); _ownedBoostPower[msg.sender] -= _plateBoostPower; hayekPlate.transfer(msg.sender, tokenId); } function _addTokenToOwnerEnumeration(address to, uint256 tokenId) private { _ownedTokensIndex[tokenId] = _ownedTokens[to].length; _ownedTokens[to].push(tokenId); } function _addTokenToAllTokensEnumeration(uint256 tokenId) private { _allTokensIndex[tokenId] = _allTokens.length; _allTokens.push(tokenId); } function _removeTokenFromOwnerEnumeration(address from, uint256 tokenId) private { uint256 lastTokenIndex = _ownedTokens[from].length.sub(1); uint256 tokenIndex = _ownedTokensIndex[tokenId]; if (tokenIndex != lastTokenIndex) { uint256 lastTokenId = _ownedTokens[from][lastTokenIndex]; _ownedTokens[from][tokenIndex] = lastTokenId; _ownedTokensIndex[lastTokenId] = tokenIndex; } _ownedTokens[from].pop(); } function _removeTokenFromAllTokensEnumeration(uint256 tokenId) private { uint256 lastTokenIndex = _allTokens.length.sub(1); uint256 tokenIndex = _allTokensIndex[tokenId]; uint256 lastTokenId = _allTokens[lastTokenIndex]; _allTokens[tokenIndex] = lastTokenId; _allTokensIndex[lastTokenId] = tokenIndex; _allTokens.pop(); _allTokensIndex[tokenId] = 0; } function getAccountBoostPower(address account) public view returns(uint256){ return _ownedBoostPower[account]; } function getStakedTokenIds(address account) public view returns(uint256[] memory){ return _ownedTokens[account]; } function getTokenIdBoostPower(uint256 tokenId) internal returns(uint256){ address customDataAddr = hayekPlate.getFeatureAddr(); IHayekPlateCustomData hayekPlateCustomData = IHayekPlateCustomData(customDataAddr); return hayekPlateCustomData.getTokenIdBoostPower(tokenId); } function onERC721Received(address operator, address from, uint256 tokenId, bytes calldata data) external returns (bytes4) { // Shh return _ERC721_RECEIVED; } } contract DAIHCCLPTokenSharePool is LPTokenWrapper, HayekPlateWrapper, IRewardDistributionRecipient { IERC20 public hayekShare; uint256 public constant DURATION = 30 days; uint256 public initreward = 18750 * 10**18; // 18750 Shares uint256 public starttime; // starttime uint256 public periodFinish = 0; uint256 public rewardRate = 0; uint256 public lastUpdateTime; uint256 public rewardPerTokenStored; mapping(address => uint256) public userRewardPerTokenPaid; mapping(address => uint256) public rewards; event RewardAdded(uint256 reward); event Staked(address indexed user, uint256 amount); event Withdrawn(address indexed user, uint256 amount); event PlateStaked(address indexed user, uint256 tokenId); event PlateWithdrawn(address indexed user, uint256 tokenId); event RewardPaid(address indexed user, uint256 reward); constructor( address hayekShare_, address lptoken_, address hayekPlate_, uint256 starttime_ ) public { hayekShare = IERC20(hayekShare_); lpt = IERC20(lptoken_); hayekPlate = IHayekPlate(hayekPlate_); starttime = starttime_; } modifier updateReward(address account) { rewardPerTokenStored = rewardPerToken(); lastUpdateTime = lastTimeRewardApplicable(); if (account != address(0)) { rewards[account] = earned(account); userRewardPerTokenPaid[account] = rewardPerTokenStored; } _; } function lastTimeRewardApplicable() public view returns (uint256) { return Math.min(block.timestamp, periodFinish); } function rewardPerToken() public view returns (uint256) { if (totalInternalSupply() == 0) { return rewardPerTokenStored; } return rewardPerTokenStored.add( lastTimeRewardApplicable() .sub(lastUpdateTime) .mul(rewardRate) .mul(1e18) .div(totalInternalSupply()) ); } function earned(address account) public view returns (uint256) { return internalBalanceOf(account) .mul(rewardPerToken().sub(userRewardPerTokenPaid[account])) .div(1e18) .add(rewards[account]); } function stakePlate(uint256 tokenId) public override updateReward(msg.sender) checkhalve checkStart { require(tokenId > 0, 'DAIHCCLPTokenSharePool: Invalid tokenId'); super.stakePlate(tokenId); uint256 userBoostPower = getAccountBoostPower(msg.sender); _update(userBoostPower); emit PlateStaked(msg.sender, tokenId); } function withdrawPlate(uint256 tokenId) public override updateReward(msg.sender) checkhalve checkStart { require(tokenId > 0, 'DAIHCCLPTokenSharePool: Invalid tokenId'); super.withdrawPlate(tokenId); uint256 userBoostPower = getAccountBoostPower(msg.sender); _update(userBoostPower); emit PlateWithdrawn(msg.sender, tokenId); } // stake visibility is public as overriding LPTokenWrapper's stake() function function stake(uint256 amount) public updateReward(msg.sender) checkhalve checkStart { require(amount > 0, 'Cannot stake 0'); uint256 userBoostPower = getAccountBoostPower(msg.sender); super.stake(amount, userBoostPower); emit Staked(msg.sender, amount); } function withdraw(uint256 amount) public updateReward(msg.sender) checkhalve checkStart { require(amount > 0, 'Cannot withdraw 0'); uint256 userBoostPower = getAccountBoostPower(msg.sender); super.withdraw(amount, userBoostPower); emit Withdrawn(msg.sender, amount); } function exit() external { withdraw(balanceOf(msg.sender)); getReward(); } function getReward() public updateReward(msg.sender) checkhalve checkStart { uint256 reward = earned(msg.sender); if (reward > 0) { rewards[msg.sender] = 0; hayekShare.safeTransfer(msg.sender, reward); emit RewardPaid(msg.sender, reward); } } modifier checkhalve() { if (block.timestamp >= periodFinish) { initreward = initreward.mul(75).div(100); rewardRate = initreward.div(DURATION); periodFinish = block.timestamp.add(DURATION); emit RewardAdded(initreward); } _; } modifier checkStart() { require(block.timestamp >= starttime, 'not start'); _; } function notifyRewardAmount(uint256 reward) external override onlyRewardDistribution updateReward(address(0)) { if (block.timestamp > starttime) { if (block.timestamp >= periodFinish) { rewardRate = reward.div(DURATION); } else { uint256 remaining = periodFinish.sub(block.timestamp); uint256 leftover = remaining.mul(rewardRate); rewardRate = reward.add(leftover).div(DURATION); } lastUpdateTime = block.timestamp; periodFinish = block.timestamp.add(DURATION); emit RewardAdded(reward); } else { rewardRate = initreward.div(DURATION); lastUpdateTime = starttime; periodFinish = starttime.add(DURATION); emit RewardAdded(reward); } } }
pragma solidity ^0.6.0; import '@openzeppelin/contracts/math/SafeMath.sol'; interface IHayekPlate { function issueAirdrop(address to, uint256 tokenId) external; } contract HayekPlateAirdropIssuer { using SafeMath for uint256; IHayekPlate public hayekPlatel; struct AirdropPool { uint256 aID; uint256 bID; uint256 cID; uint256 dID; uint256 eID; uint256 fID; uint256 gID; uint256 hID; uint256 aIDAmount; uint256 bIDAmount; uint256 cIDAmount; uint256 dIDAmount; uint256 eIDAmount; uint256 fIDAmount; uint256 gIDAmount; uint256 hIDAmount; uint256 allAmount; } uint256 public totolUnclaimed = 12705; mapping(address => AirdropPool) private airdropRemaining; mapping(address => bool) private airdropPoolAddr; constructor (IHayekPlate _hayekPlate, address[] memory airdropPools) public { hayekPlatel = _hayekPlate; for (uint256 i = 0; i < airdropPools.length; i++) { airdropRemaining[airdropPools[i]] = AirdropPool( i * 1 + 1, i * 20 + 20001, i * 40 + 30001, i * 80 + 40001, i * 160 + 50001, i * 320 + 60001, i * 640 + 70001, i * 1280+ 80001, 1,20,40,80,160,320,640,1280,2541); airdropPoolAddr[airdropPools[i]] = true; } } modifier isAirdropPool() { require(airdropPoolAddr[msg.sender], 'Not Airdrop'); _; } function claimONEPlate(address account) public isAirdropPool { AirdropPool storage airdropPool = airdropRemaining[msg.sender]; uint256 newTokenId = rand(account, airdropPool); hayekPlatel.issueAirdrop(account, newTokenId); totolUnclaimed = totolUnclaimed.sub(1); } function getTargetAirdropStatus(address _airdropPool) public view returns(uint256, uint256, uint256, uint256, uint256, uint256, uint256, uint256, uint256) { AirdropPool storage airdropPool = airdropRemaining[_airdropPool]; return (airdropPool.aIDAmount, airdropPool.bIDAmount, airdropPool.cIDAmount, airdropPool.dIDAmount, airdropPool.eIDAmount, airdropPool.fIDAmount, airdropPool.gIDAmount, airdropPool.hIDAmount, airdropPool.allAmount); } function rand(address account, AirdropPool storage airdropPool) internal returns(uint256) { uint256 random = uint256(keccak256(abi.encode(block.difficulty, now, account, airdropPool.allAmount))); uint256 randomBase = random % airdropPool.allAmount; uint256 tokenId = 0; if (randomBase < airdropPool.aIDAmount) { tokenId = airdropPool.aID; airdropPool.aID = airdropPool.aID.add(1); airdropPool.aIDAmount = airdropPool.aIDAmount.sub(1); } else if (randomBase < (airdropPool.aIDAmount + airdropPool.bIDAmount)) { tokenId = airdropPool.bID; airdropPool.bID = airdropPool.bID.add(1); airdropPool.bIDAmount = airdropPool.bIDAmount.sub(1); } else if (randomBase < (airdropPool.aIDAmount + airdropPool.bIDAmount + airdropPool.cIDAmount)) { tokenId = airdropPool.cID; airdropPool.cID = airdropPool.cID.add(1); airdropPool.cIDAmount = airdropPool.cIDAmount.sub(1); } else if (randomBase < (airdropPool.aIDAmount + airdropPool.bIDAmount + airdropPool.cIDAmount + airdropPool.dIDAmount)) { tokenId = airdropPool.dID; airdropPool.dID = airdropPool.dID.add(1); airdropPool.dIDAmount = airdropPool.dIDAmount.sub(1); } else if (randomBase < (airdropPool.aIDAmount + airdropPool.bIDAmount + airdropPool.cIDAmount + airdropPool.dIDAmount + airdropPool.eIDAmount)) { tokenId = airdropPool.eID; airdropPool.eID = airdropPool.eID.add(1); airdropPool.eIDAmount = airdropPool.eIDAmount.sub(1); } else if (randomBase < (airdropPool.aIDAmount + airdropPool.bIDAmount + airdropPool.cIDAmount + airdropPool.dIDAmount + airdropPool.eIDAmount + airdropPool.fIDAmount)) { tokenId = airdropPool.fID; airdropPool.fID = airdropPool.fID.add(1); airdropPool.fIDAmount = airdropPool.fIDAmount.sub(1); } else if (randomBase < (airdropPool.aIDAmount + airdropPool.bIDAmount + airdropPool.cIDAmount + airdropPool.dIDAmount + airdropPool.eIDAmount + airdropPool.fIDAmount + airdropPool.gIDAmount)) { tokenId = airdropPool.gID; airdropPool.gID = airdropPool.gID.add(1); airdropPool.gIDAmount = airdropPool.gIDAmount.sub(1); } else if (randomBase < (airdropPool.aIDAmount + airdropPool.bIDAmount + airdropPool.cIDAmount + airdropPool.dIDAmount + airdropPool.eIDAmount + airdropPool.fIDAmount + airdropPool.gIDAmount + airdropPool.hIDAmount)) { tokenId = airdropPool.hID; airdropPool.hID = airdropPool.hID.add(1); airdropPool.hIDAmount = airdropPool.hIDAmount.sub(1); } airdropPool.allAmount = airdropPool.allAmount.sub(1); return tokenId; } }
// SPDX-License-Identifier: MIT pragma solidity ^0.6.0; import "../../GSN/Context.sol"; import "./IERC721.sol"; import "./IERC721Metadata.sol"; import "./IERC721Enumerable.sol"; import "./IERC721Receiver.sol"; import "../../introspection/ERC165.sol"; import "../../math/SafeMath.sol"; import "../../utils/Address.sol"; import "../../utils/EnumerableSet.sol"; import "../../utils/EnumerableMap.sol"; import "../../utils/Strings.sol"; /** * @title ERC721 Non-Fungible Token Standard basic implementation * @dev see https://eips.ethereum.org/EIPS/eip-721 */ contract ERC721 is Context, ERC165, IERC721, IERC721Metadata, IERC721Enumerable { using SafeMath for uint256; using Address for address; using EnumerableSet for EnumerableSet.UintSet; using EnumerableMap for EnumerableMap.UintToAddressMap; using Strings for uint256; // Equals to `bytes4(keccak256("onERC721Received(address,address,uint256,bytes)"))` // which can be also obtained as `IERC721Receiver(0).onERC721Received.selector` bytes4 private constant _ERC721_RECEIVED = 0x150b7a02; // Mapping from holder address to their (enumerable) set of owned tokens mapping (address => EnumerableSet.UintSet) private _holderTokens; // Enumerable mapping from token ids to their owners EnumerableMap.UintToAddressMap private _tokenOwners; // Mapping from token ID to approved address mapping (uint256 => address) private _tokenApprovals; // Mapping from owner to operator approvals mapping (address => mapping (address => bool)) private _operatorApprovals; // Token name string private _name; // Token symbol string private _symbol; // Optional mapping for token URIs mapping (uint256 => string) private _tokenURIs; // Base URI string private _baseURI; /* * bytes4(keccak256('balanceOf(address)')) == 0x70a08231 * bytes4(keccak256('ownerOf(uint256)')) == 0x6352211e * bytes4(keccak256('approve(address,uint256)')) == 0x095ea7b3 * bytes4(keccak256('getApproved(uint256)')) == 0x081812fc * bytes4(keccak256('setApprovalForAll(address,bool)')) == 0xa22cb465 * bytes4(keccak256('isApprovedForAll(address,address)')) == 0xe985e9c5 * bytes4(keccak256('transferFrom(address,address,uint256)')) == 0x23b872dd * bytes4(keccak256('safeTransferFrom(address,address,uint256)')) == 0x42842e0e * bytes4(keccak256('safeTransferFrom(address,address,uint256,bytes)')) == 0xb88d4fde * * => 0x70a08231 ^ 0x6352211e ^ 0x095ea7b3 ^ 0x081812fc ^ * 0xa22cb465 ^ 0xe985e9c5 ^ 0x23b872dd ^ 0x42842e0e ^ 0xb88d4fde == 0x80ac58cd */ bytes4 private constant _INTERFACE_ID_ERC721 = 0x80ac58cd; /* * bytes4(keccak256('name()')) == 0x06fdde03 * bytes4(keccak256('symbol()')) == 0x95d89b41 * bytes4(keccak256('tokenURI(uint256)')) == 0xc87b56dd * * => 0x06fdde03 ^ 0x95d89b41 ^ 0xc87b56dd == 0x5b5e139f */ bytes4 private constant _INTERFACE_ID_ERC721_METADATA = 0x5b5e139f; /* * bytes4(keccak256('totalSupply()')) == 0x18160ddd * bytes4(keccak256('tokenOfOwnerByIndex(address,uint256)')) == 0x2f745c59 * bytes4(keccak256('tokenByIndex(uint256)')) == 0x4f6ccce7 * * => 0x18160ddd ^ 0x2f745c59 ^ 0x4f6ccce7 == 0x780e9d63 */ bytes4 private constant _INTERFACE_ID_ERC721_ENUMERABLE = 0x780e9d63; /** * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection. */ constructor (string memory name, string memory symbol) public { _name = name; _symbol = symbol; // register the supported interfaces to conform to ERC721 via ERC165 _registerInterface(_INTERFACE_ID_ERC721); _registerInterface(_INTERFACE_ID_ERC721_METADATA); _registerInterface(_INTERFACE_ID_ERC721_ENUMERABLE); } /** * @dev See {IERC721-balanceOf}. */ function balanceOf(address owner) public view override returns (uint256) { require(owner != address(0), "ERC721: balance query for the zero address"); return _holderTokens[owner].length(); } /** * @dev See {IERC721-ownerOf}. */ function ownerOf(uint256 tokenId) public view override returns (address) { return _tokenOwners.get(tokenId, "ERC721: owner query for nonexistent token"); } /** * @dev See {IERC721Metadata-name}. */ function name() public view override returns (string memory) { return _name; } /** * @dev See {IERC721Metadata-symbol}. */ function symbol() public view override returns (string memory) { return _symbol; } /** * @dev See {IERC721Metadata-tokenURI}. */ function tokenURI(uint256 tokenId) public view override returns (string memory) { require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token"); string memory _tokenURI = _tokenURIs[tokenId]; // If there is no base URI, return the token URI. if (bytes(_baseURI).length == 0) { return _tokenURI; } // If both are set, concatenate the baseURI and tokenURI (via abi.encodePacked). if (bytes(_tokenURI).length > 0) { return string(abi.encodePacked(_baseURI, _tokenURI)); } // If there is a baseURI but no tokenURI, concatenate the tokenID to the baseURI. return string(abi.encodePacked(_baseURI, tokenId.toString())); } /** * @dev Returns the base URI set via {_setBaseURI}. This will be * automatically added as a prefix in {tokenURI} to each token's URI, or * to the token ID if no specific URI is set for that token ID. */ function baseURI() public view returns (string memory) { return _baseURI; } /** * @dev See {IERC721Enumerable-tokenOfOwnerByIndex}. */ function tokenOfOwnerByIndex(address owner, uint256 index) public view override returns (uint256) { return _holderTokens[owner].at(index); } /** * @dev See {IERC721Enumerable-totalSupply}. */ function totalSupply() public view override returns (uint256) { // _tokenOwners are indexed by tokenIds, so .length() returns the number of tokenIds return _tokenOwners.length(); } /** * @dev See {IERC721Enumerable-tokenByIndex}. */ function tokenByIndex(uint256 index) public view override returns (uint256) { (uint256 tokenId, ) = _tokenOwners.at(index); return tokenId; } /** * @dev See {IERC721-approve}. */ function approve(address to, uint256 tokenId) public virtual override { address owner = ownerOf(tokenId); require(to != owner, "ERC721: approval to current owner"); require(_msgSender() == owner || isApprovedForAll(owner, _msgSender()), "ERC721: approve caller is not owner nor approved for all" ); _approve(to, tokenId); } /** * @dev See {IERC721-getApproved}. */ function getApproved(uint256 tokenId) public view override returns (address) { require(_exists(tokenId), "ERC721: approved query for nonexistent token"); return _tokenApprovals[tokenId]; } /** * @dev See {IERC721-setApprovalForAll}. */ function setApprovalForAll(address operator, bool approved) public virtual override { require(operator != _msgSender(), "ERC721: approve to caller"); _operatorApprovals[_msgSender()][operator] = approved; emit ApprovalForAll(_msgSender(), operator, approved); } /** * @dev See {IERC721-isApprovedForAll}. */ function isApprovedForAll(address owner, address operator) public view override returns (bool) { return _operatorApprovals[owner][operator]; } /** * @dev See {IERC721-transferFrom}. */ function transferFrom(address from, address to, uint256 tokenId) public virtual override { //solhint-disable-next-line max-line-length require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved"); _transfer(from, to, tokenId); } /** * @dev See {IERC721-safeTransferFrom}. */ function safeTransferFrom(address from, address to, uint256 tokenId) public virtual override { safeTransferFrom(from, to, tokenId, ""); } /** * @dev See {IERC721-safeTransferFrom}. */ function safeTransferFrom(address from, address to, uint256 tokenId, bytes memory _data) public virtual override { require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved"); _safeTransfer(from, to, tokenId, _data); } /** * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients * are aware of the ERC721 protocol to prevent tokens from being forever locked. * * `_data` is additional data, it has no specified format and it is sent in call to `to`. * * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g. * implement alternative mechanisms to perform token transfer, such as signature-based. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function _safeTransfer(address from, address to, uint256 tokenId, bytes memory _data) internal virtual { _transfer(from, to, tokenId); require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer"); } /** * @dev Returns whether `tokenId` exists. * * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}. * * Tokens start existing when they are minted (`_mint`), * and stop existing when they are burned (`_burn`). */ function _exists(uint256 tokenId) internal view returns (bool) { return _tokenOwners.contains(tokenId); } /** * @dev Returns whether `spender` is allowed to manage `tokenId`. * * Requirements: * * - `tokenId` must exist. */ function _isApprovedOrOwner(address spender, uint256 tokenId) internal view returns (bool) { require(_exists(tokenId), "ERC721: operator query for nonexistent token"); address owner = ownerOf(tokenId); return (spender == owner || getApproved(tokenId) == spender || isApprovedForAll(owner, spender)); } /** * @dev Safely mints `tokenId` and transfers it to `to`. * * Requirements: d* * - `tokenId` must not exist. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function _safeMint(address to, uint256 tokenId) internal virtual { _safeMint(to, tokenId, ""); } /** * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is * forwarded in {IERC721Receiver-onERC721Received} to contract recipients. */ function _safeMint(address to, uint256 tokenId, bytes memory _data) internal virtual { _mint(to, tokenId); require(_checkOnERC721Received(address(0), to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer"); } /** * @dev Mints `tokenId` and transfers it to `to`. * * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible * * Requirements: * * - `tokenId` must not exist. * - `to` cannot be the zero address. * * Emits a {Transfer} event. */ function _mint(address to, uint256 tokenId) internal virtual { require(to != address(0), "ERC721: mint to the zero address"); require(!_exists(tokenId), "ERC721: token already minted"); _beforeTokenTransfer(address(0), to, tokenId); _holderTokens[to].add(tokenId); _tokenOwners.set(tokenId, to); emit Transfer(address(0), to, tokenId); } /** * @dev Destroys `tokenId`. * The approval is cleared when the token is burned. * * Requirements: * * - `tokenId` must exist. * * Emits a {Transfer} event. */ function _burn(uint256 tokenId) internal virtual { address owner = ownerOf(tokenId); _beforeTokenTransfer(owner, address(0), tokenId); // Clear approvals _approve(address(0), tokenId); // Clear metadata (if any) if (bytes(_tokenURIs[tokenId]).length != 0) { delete _tokenURIs[tokenId]; } _holderTokens[owner].remove(tokenId); _tokenOwners.remove(tokenId); emit Transfer(owner, address(0), tokenId); } /** * @dev Transfers `tokenId` from `from` to `to`. * As opposed to {transferFrom}, this imposes no restrictions on msg.sender. * * Requirements: * * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * * Emits a {Transfer} event. */ function _transfer(address from, address to, uint256 tokenId) internal virtual { require(ownerOf(tokenId) == from, "ERC721: transfer of token that is not own"); require(to != address(0), "ERC721: transfer to the zero address"); _beforeTokenTransfer(from, to, tokenId); // Clear approvals from the previous owner _approve(address(0), tokenId); _holderTokens[from].remove(tokenId); _holderTokens[to].add(tokenId); _tokenOwners.set(tokenId, to); emit Transfer(from, to, tokenId); } /** * @dev Sets `_tokenURI` as the tokenURI of `tokenId`. * * Requirements: * * - `tokenId` must exist. */ function _setTokenURI(uint256 tokenId, string memory _tokenURI) internal virtual { require(_exists(tokenId), "ERC721Metadata: URI set of nonexistent token"); _tokenURIs[tokenId] = _tokenURI; } /** * @dev Internal function to set the base URI for all token IDs. It is * automatically added as a prefix to the value returned in {tokenURI}, * or to the token ID if {tokenURI} is empty. */ function _setBaseURI(string memory baseURI_) internal virtual { _baseURI = baseURI_; } /** * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address. * The call is not executed if the target address is not a contract. * * @param from address representing the previous owner of the given token ID * @param to target address that will receive the tokens * @param tokenId uint256 ID of the token to be transferred * @param _data bytes optional data to send along with the call * @return bool whether the call correctly returned the expected magic value */ function _checkOnERC721Received(address from, address to, uint256 tokenId, bytes memory _data) private returns (bool) { if (!to.isContract()) { return true; } bytes memory returndata = to.functionCall(abi.encodeWithSelector( IERC721Receiver(to).onERC721Received.selector, _msgSender(), from, tokenId, _data ), "ERC721: transfer to non ERC721Receiver implementer"); bytes4 retval = abi.decode(returndata, (bytes4)); return (retval == _ERC721_RECEIVED); } function _approve(address to, uint256 tokenId) private { _tokenApprovals[tokenId] = to; emit Approval(ownerOf(tokenId), to, tokenId); } /** * @dev Hook that is called before any token transfer. This includes minting * and burning. * * Calling conditions: * * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be * transferred to `to`. * - When `from` is zero, `tokenId` will be minted for `to`. * - When `to` is zero, ``from``'s `tokenId` will be burned. * - `from` cannot be the zero address. * - `to` cannot be the zero address. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _beforeTokenTransfer(address from, address to, uint256 tokenId) internal virtual { } }
// SPDX-License-Identifier: MIT pragma solidity ^0.6.2; import "../../introspection/IERC165.sol"; /** * @dev Required interface of an ERC721 compliant contract. */ interface IERC721 is IERC165 { /** * @dev Emitted when `tokenId` token is transferred from `from` to `to`. */ event Transfer(address indexed from, address indexed to, uint256 indexed tokenId); /** * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token. */ event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId); /** * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets. */ event ApprovalForAll(address indexed owner, address indexed operator, bool approved); /** * @dev Returns the number of tokens in ``owner``'s account. */ function balanceOf(address owner) external view returns (uint256 balance); /** * @dev Returns the owner of the `tokenId` token. * * Requirements: * * - `tokenId` must exist. */ function ownerOf(uint256 tokenId) external view returns (address owner); /** * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients * are aware of the ERC721 protocol to prevent tokens from being forever locked. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function safeTransferFrom(address from, address to, uint256 tokenId) external; /** * @dev Transfers `tokenId` token from `from` to `to`. * * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * * Emits a {Transfer} event. */ function transferFrom(address from, address to, uint256 tokenId) external; /** * @dev Gives permission to `to` to transfer `tokenId` token to another account. * The approval is cleared when the token is transferred. * * Only a single account can be approved at a time, so approving the zero address clears previous approvals. * * Requirements: * * - The caller must own the token or be an approved operator. * - `tokenId` must exist. * * Emits an {Approval} event. */ function approve(address to, uint256 tokenId) external; /** * @dev Returns the account approved for `tokenId` token. * * Requirements: * * - `tokenId` must exist. */ function getApproved(uint256 tokenId) external view returns (address operator); /** * @dev Approve or remove `operator` as an operator for the caller. * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller. * * Requirements: * * - The `operator` cannot be the caller. * * Emits an {ApprovalForAll} event. */ function setApprovalForAll(address operator, bool _approved) external; /** * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`. * * See {setApprovalForAll} */ function isApprovedForAll(address owner, address operator) external view returns (bool); /** * @dev Safely transfers `tokenId` token from `from` to `to`. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function safeTransferFrom(address from, address to, uint256 tokenId, bytes calldata data) external; }
// SPDX-License-Identifier: MIT pragma solidity ^0.6.2; import "./IERC721.sol"; /** * @title ERC-721 Non-Fungible Token Standard, optional metadata extension * @dev See https://eips.ethereum.org/EIPS/eip-721 */ interface IERC721Metadata is IERC721 { /** * @dev Returns the token collection name. */ function name() external view returns (string memory); /** * @dev Returns the token collection symbol. */ function symbol() external view returns (string memory); /** * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token. */ function tokenURI(uint256 tokenId) external view returns (string memory); }
// SPDX-License-Identifier: MIT pragma solidity ^0.6.2; import "./IERC721.sol"; /** * @title ERC-721 Non-Fungible Token Standard, optional enumeration extension * @dev See https://eips.ethereum.org/EIPS/eip-721 */ interface IERC721Enumerable is IERC721 { /** * @dev Returns the total amount of tokens stored by the contract. */ function totalSupply() external view returns (uint256); /** * @dev Returns a token ID owned by `owner` at a given `index` of its token list. * Use along with {balanceOf} to enumerate all of ``owner``'s tokens. */ function tokenOfOwnerByIndex(address owner, uint256 index) external view returns (uint256 tokenId); /** * @dev Returns a token ID at a given `index` of all the tokens stored by the contract. * Use along with {totalSupply} to enumerate all tokens. */ function tokenByIndex(uint256 index) external view returns (uint256); }
// SPDX-License-Identifier: MIT pragma solidity ^0.6.0; /** * @title ERC721 token receiver interface * @dev Interface for any contract that wants to support safeTransfers * from ERC721 asset contracts. */ interface IERC721Receiver { /** * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom} * by `operator` from `from`, this function is called. * * It must return its Solidity selector to confirm the token transfer. * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted. * * The selector can be obtained in Solidity with `IERC721.onERC721Received.selector`. */ function onERC721Received(address operator, address from, uint256 tokenId, bytes calldata data) external returns (bytes4); }
// SPDX-License-Identifier: MIT pragma solidity ^0.6.0; import "./IERC165.sol"; /** * @dev Implementation of the {IERC165} interface. * * Contracts may inherit from this and call {_registerInterface} to declare * their support of an interface. */ 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; /** * @dev Library for managing * https://en.wikipedia.org/wiki/Set_(abstract_data_type)[sets] of primitive * types. * * Sets have the following properties: * * - Elements are added, removed, and checked for existence in constant time * (O(1)). * - Elements are enumerated in O(n). No guarantees are made on the ordering. * * ``` * contract Example { * // Add the library methods * using EnumerableSet for EnumerableSet.AddressSet; * * // Declare a set state variable * EnumerableSet.AddressSet private mySet; * } * ``` * * As of v3.0.0, only sets of type `address` (`AddressSet`) and `uint256` * (`UintSet`) are supported. */ library EnumerableSet { // To implement this library for multiple types with as little code // repetition as possible, we write it in terms of a generic Set type with // bytes32 values. // The Set implementation uses private functions, and user-facing // implementations (such as AddressSet) are just wrappers around the // underlying Set. // This means that we can only create new EnumerableSets for types that fit // in bytes32. struct Set { // Storage of set values bytes32[] _values; // Position of the value in the `values` array, plus 1 because index 0 // means a value is not in the set. mapping (bytes32 => uint256) _indexes; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function _add(Set storage set, bytes32 value) private returns (bool) { if (!_contains(set, value)) { set._values.push(value); // The value is stored at length-1, but we add 1 to all indexes // and use 0 as a sentinel value set._indexes[value] = set._values.length; return true; } else { return false; } } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function _remove(Set storage set, bytes32 value) private returns (bool) { // We read and store the value's index to prevent multiple reads from the same storage slot uint256 valueIndex = set._indexes[value]; if (valueIndex != 0) { // Equivalent to contains(set, value) // To delete an element from the _values array in O(1), we swap the element to delete with the last one in // the array, and then remove the last element (sometimes called as 'swap and pop'). // This modifies the order of the array, as noted in {at}. uint256 toDeleteIndex = valueIndex - 1; uint256 lastIndex = set._values.length - 1; // When the value to delete is the last one, the swap operation is unnecessary. However, since this occurs // so rarely, we still do the swap anyway to avoid the gas cost of adding an 'if' statement. bytes32 lastvalue = set._values[lastIndex]; // Move the last value to the index where the value to delete is set._values[toDeleteIndex] = lastvalue; // Update the index for the moved value set._indexes[lastvalue] = toDeleteIndex + 1; // All indexes are 1-based // Delete the slot where the moved value was stored set._values.pop(); // Delete the index for the deleted slot delete set._indexes[value]; return true; } else { return false; } } /** * @dev Returns true if the value is in the set. O(1). */ function _contains(Set storage set, bytes32 value) private view returns (bool) { return set._indexes[value] != 0; } /** * @dev Returns the number of values on the set. O(1). */ function _length(Set storage set) private view returns (uint256) { return set._values.length; } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function _at(Set storage set, uint256 index) private view returns (bytes32) { require(set._values.length > index, "EnumerableSet: index out of bounds"); return set._values[index]; } // AddressSet struct AddressSet { Set _inner; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function add(AddressSet storage set, address value) internal returns (bool) { return _add(set._inner, bytes32(uint256(value))); } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function remove(AddressSet storage set, address value) internal returns (bool) { return _remove(set._inner, bytes32(uint256(value))); } /** * @dev Returns true if the value is in the set. O(1). */ function contains(AddressSet storage set, address value) internal view returns (bool) { return _contains(set._inner, bytes32(uint256(value))); } /** * @dev Returns the number of values in the set. O(1). */ function length(AddressSet storage set) internal view returns (uint256) { return _length(set._inner); } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function at(AddressSet storage set, uint256 index) internal view returns (address) { return address(uint256(_at(set._inner, index))); } // UintSet struct UintSet { Set _inner; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function add(UintSet storage set, uint256 value) internal returns (bool) { return _add(set._inner, bytes32(value)); } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function remove(UintSet storage set, uint256 value) internal returns (bool) { return _remove(set._inner, bytes32(value)); } /** * @dev Returns true if the value is in the set. O(1). */ function contains(UintSet storage set, uint256 value) internal view returns (bool) { return _contains(set._inner, bytes32(value)); } /** * @dev Returns the number of values on the set. O(1). */ function length(UintSet storage set) internal view returns (uint256) { return _length(set._inner); } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function at(UintSet storage set, uint256 index) internal view returns (uint256) { return uint256(_at(set._inner, index)); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.6.0; /** * @dev Library for managing an enumerable variant of Solidity's * https://solidity.readthedocs.io/en/latest/types.html#mapping-types[`mapping`] * type. * * Maps have the following properties: * * - Entries are added, removed, and checked for existence in constant time * (O(1)). * - Entries are enumerated in O(n). No guarantees are made on the ordering. * * ``` * contract Example { * // Add the library methods * using EnumerableMap for EnumerableMap.UintToAddressMap; * * // Declare a set state variable * EnumerableMap.UintToAddressMap private myMap; * } * ``` * * As of v3.0.0, only maps of type `uint256 -> address` (`UintToAddressMap`) are * supported. */ library EnumerableMap { // To implement this library for multiple types with as little code // repetition as possible, we write it in terms of a generic Map type with // bytes32 keys and values. // The Map implementation uses private functions, and user-facing // implementations (such as Uint256ToAddressMap) are just wrappers around // the underlying Map. // This means that we can only create new EnumerableMaps for types that fit // in bytes32. struct MapEntry { bytes32 _key; bytes32 _value; } struct Map { // Storage of map keys and values MapEntry[] _entries; // Position of the entry defined by a key in the `entries` array, plus 1 // because index 0 means a key is not in the map. mapping (bytes32 => uint256) _indexes; } /** * @dev Adds a key-value pair to a map, or updates the value for an existing * key. O(1). * * Returns true if the key was added to the map, that is if it was not * already present. */ function _set(Map storage map, bytes32 key, bytes32 value) private returns (bool) { // We read and store the key's index to prevent multiple reads from the same storage slot uint256 keyIndex = map._indexes[key]; if (keyIndex == 0) { // Equivalent to !contains(map, key) map._entries.push(MapEntry({ _key: key, _value: value })); // The entry is stored at length-1, but we add 1 to all indexes // and use 0 as a sentinel value map._indexes[key] = map._entries.length; return true; } else { map._entries[keyIndex - 1]._value = value; return false; } } /** * @dev Removes a key-value pair from a map. O(1). * * Returns true if the key was removed from the map, that is if it was present. */ function _remove(Map storage map, bytes32 key) private returns (bool) { // We read and store the key's index to prevent multiple reads from the same storage slot uint256 keyIndex = map._indexes[key]; if (keyIndex != 0) { // Equivalent to contains(map, key) // To delete a key-value pair from the _entries array in O(1), we swap the entry to delete with the last one // in the array, and then remove the last entry (sometimes called as 'swap and pop'). // This modifies the order of the array, as noted in {at}. uint256 toDeleteIndex = keyIndex - 1; uint256 lastIndex = map._entries.length - 1; // When the entry to delete is the last one, the swap operation is unnecessary. However, since this occurs // so rarely, we still do the swap anyway to avoid the gas cost of adding an 'if' statement. MapEntry storage lastEntry = map._entries[lastIndex]; // Move the last entry to the index where the entry to delete is map._entries[toDeleteIndex] = lastEntry; // Update the index for the moved entry map._indexes[lastEntry._key] = toDeleteIndex + 1; // All indexes are 1-based // Delete the slot where the moved entry was stored map._entries.pop(); // Delete the index for the deleted slot delete map._indexes[key]; return true; } else { return false; } } /** * @dev Returns true if the key is in the map. O(1). */ function _contains(Map storage map, bytes32 key) private view returns (bool) { return map._indexes[key] != 0; } /** * @dev Returns the number of key-value pairs in the map. O(1). */ function _length(Map storage map) private view returns (uint256) { return map._entries.length; } /** * @dev Returns the key-value pair stored at position `index` in the map. O(1). * * Note that there are no guarantees on the ordering of entries inside the * array, and it may change when more entries are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function _at(Map storage map, uint256 index) private view returns (bytes32, bytes32) { require(map._entries.length > index, "EnumerableMap: index out of bounds"); MapEntry storage entry = map._entries[index]; return (entry._key, entry._value); } /** * @dev Returns the value associated with `key`. O(1). * * Requirements: * * - `key` must be in the map. */ function _get(Map storage map, bytes32 key) private view returns (bytes32) { return _get(map, key, "EnumerableMap: nonexistent key"); } /** * @dev Same as {_get}, with a custom error message when `key` is not in the map. */ function _get(Map storage map, bytes32 key, string memory errorMessage) private view returns (bytes32) { uint256 keyIndex = map._indexes[key]; require(keyIndex != 0, errorMessage); // Equivalent to contains(map, key) return map._entries[keyIndex - 1]._value; // All indexes are 1-based } // UintToAddressMap struct UintToAddressMap { Map _inner; } /** * @dev Adds a key-value pair to a map, or updates the value for an existing * key. O(1). * * Returns true if the key was added to the map, that is if it was not * already present. */ function set(UintToAddressMap storage map, uint256 key, address value) internal returns (bool) { return _set(map._inner, bytes32(key), bytes32(uint256(value))); } /** * @dev Removes a value from a set. O(1). * * Returns true if the key was removed from the map, that is if it was present. */ function remove(UintToAddressMap storage map, uint256 key) internal returns (bool) { return _remove(map._inner, bytes32(key)); } /** * @dev Returns true if the key is in the map. O(1). */ function contains(UintToAddressMap storage map, uint256 key) internal view returns (bool) { return _contains(map._inner, bytes32(key)); } /** * @dev Returns the number of elements in the map. O(1). */ function length(UintToAddressMap storage map) internal view returns (uint256) { return _length(map._inner); } /** * @dev Returns the element stored at position `index` in the set. O(1). * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function at(UintToAddressMap storage map, uint256 index) internal view returns (uint256, address) { (bytes32 key, bytes32 value) = _at(map._inner, index); return (uint256(key), address(uint256(value))); } /** * @dev Returns the value associated with `key`. O(1). * * Requirements: * * - `key` must be in the map. */ function get(UintToAddressMap storage map, uint256 key) internal view returns (address) { return address(uint256(_get(map._inner, bytes32(key)))); } /** * @dev Same as {get}, with a custom error message when `key` is not in the map. */ function get(UintToAddressMap storage map, uint256 key, string memory errorMessage) internal view returns (address) { return address(uint256(_get(map._inner, bytes32(key), errorMessage))); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.6.0; /** * @dev String operations. */ library Strings { /** * @dev Converts a `uint256` to its ASCII `string` representation. */ function toString(uint256 value) internal pure returns (string memory) { // Inspired by OraclizeAPI's implementation - MIT licence // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol if (value == 0) { return "0"; } uint256 temp = value; uint256 digits; while (temp != 0) { digits++; temp /= 10; } bytes memory buffer = new bytes(digits); uint256 index = digits - 1; temp = value; while (temp != 0) { buffer[index--] = byte(uint8(48 + temp % 10)); temp /= 10; } return string(buffer); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.6.0; /** * @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; import "../../GSN/Context.sol"; import "./ERC721.sol"; /** * @title ERC721 Burnable Token * @dev ERC721 Token that can be irreversibly burned (destroyed). */ abstract contract ERC721Burnable is Context, ERC721 { /** * @dev Burns `tokenId`. See {ERC721-_burn}. * * Requirements: * * - The caller must own `tokenId` or be an approved operator. */ function burn(uint256 tokenId) public virtual { //solhint-disable-next-line max-line-length require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721Burnable: caller is not owner nor approved"); _burn(tokenId); } }
pragma solidity ^0.6.0; import "@openzeppelin/contracts/token/ERC721/ERC721Burnable.sol"; import './owner/Operator.sol'; pragma solidity ^0.6.0; contract HayekPlate is ERC721Burnable, Operator { using SafeMath for uint256; address public nftFeature; event FeatureAddrChanged(address indexed oldFeatureAddr, address indexed newFeatureAddr); event AirdropIssuerChanged(address indexed oldAirdropIssuer, address indexed newAirdropIssuer); event CoreProtocolChanged(address indexed oldCoreProtocol, address indexed newCoreProtocol); address public airdropIssuer; address public coreProtocol; constructor (address _nftFeature) public ERC721("Hayek-Money-NFT", "HayekNFT") { nftFeature = _nftFeature; } modifier onlyAirdropIssuer() { require(msg.sender == airdropIssuer, "Not airdropIssuer"); _; } modifier onlyCoreProtocol() { require(msg.sender == coreProtocol, "Not coreProtocol"); _; } function setAirdropIssuer(address _airdropIssuer) public onlyOperator { address oldAirdropIssuer = _airdropIssuer; airdropIssuer = _airdropIssuer; emit AirdropIssuerChanged(oldAirdropIssuer, airdropIssuer); } function setCoreProtocol(address _coreProtocol) public onlyOperator { address oldCoreProtocol = coreProtocol; coreProtocol = _coreProtocol; emit CoreProtocolChanged(oldCoreProtocol, coreProtocol); } function getOwnerAllNFT(address account) public view returns(uint256[] memory) { uint256 length = balanceOf(account); uint256[] memory allNFT = new uint256[](length); for (uint256 i = 0; i < length; i++) { allNFT[i] = tokenOfOwnerByIndex(account, i); } return allNFT; } function setFeatureAddr(address _nftFeature) public onlyOperator { address oldNFTFeature = nftFeature; nftFeature = _nftFeature; emit FeatureAddrChanged(oldNFTFeature, nftFeature); } function getFeatureAddr() public view returns(address) { return nftFeature; } function setBaseURI(string memory baseURI_) public onlyOperator { _setBaseURI(baseURI_); } function setTokenURI(uint256 tokenId, string memory _tokenURI) public onlyOperator { _setTokenURI(tokenId, _tokenURI); } function mint(address to, uint256 tokenId) public onlyOperator { _mint(to, tokenId); } function merge(address to, uint256 tokenId) public onlyCoreProtocol { _mint(to, tokenId); } function issueAirdrop(address to, uint256 tokenId) public onlyAirdropIssuer { _mint(to, tokenId); } function transfer(address to, uint256 tokenId) public { safeTransferFrom(msg.sender, to, tokenId); } function batchTransfer(address to, uint256[] memory tokenId) public { for (uint256 i = 0; i < tokenId.length; i++) { safeTransferFrom(msg.sender, to, tokenId[i]); } } }
// SPDX-License-Identifier: MIT pragma solidity ^0.6.0; import "../../GSN/Context.sol"; import "./IERC20.sol"; import "../../math/SafeMath.sol"; import "../../utils/Address.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; using Address for address; 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 { } }
// SPDX-License-Identifier: MIT pragma solidity ^0.6.0; import "../../GSN/Context.sol"; import "./ERC20.sol"; /** * @dev Extension of {ERC20} that allows token holders to destroy both their own * tokens and those that they have an allowance for, in a way that can be * recognized off-chain (via event analysis). */ abstract contract ERC20Burnable is Context, ERC20 { /** * @dev Destroys `amount` tokens from the caller. * * See {ERC20-_burn}. */ function burn(uint256 amount) public virtual { _burn(_msgSender(), amount); } /** * @dev Destroys `amount` tokens from `account`, deducting from the caller's * allowance. * * See {ERC20-_burn} and {ERC20-allowance}. * * Requirements: * * - the caller must have allowance for ``accounts``'s tokens of at least * `amount`. */ function burnFrom(address account, uint256 amount) public virtual { uint256 decreasedAllowance = allowance(account, _msgSender()).sub(amount, "ERC20: burn amount exceeds allowance"); _approve(account, _msgSender(), decreasedAllowance); _burn(account, amount); } }
pragma solidity ^0.6.0; import '@openzeppelin/contracts/token/ERC20/ERC20Burnable.sol'; import '../owner/Operator.sol'; contract MockDai is ERC20Burnable, Operator { /** * @notice Constructs the OK Cash ERC-20 contract. */ constructor() public ERC20('DAI', 'DAI') { _mint(msg.sender, 10000 * 10**18); } /** * @notice Operator mints dino cash to a recipient * @param recipient_ The address of recipient * @param amount_ The amount of dino cash to mint to * @return whether the process has been done */ function mint(address recipient_, uint256 amount_) public onlyOperator returns (bool) { uint256 balanceBefore = balanceOf(recipient_); _mint(recipient_, amount_); uint256 balanceAfter = balanceOf(recipient_); return balanceAfter > balanceBefore; } }
pragma solidity ^0.6.0; import '@openzeppelin/contracts/token/ERC20/ERC20Burnable.sol'; import './owner/Operator.sol'; contract Cash is ERC20Burnable, Operator { /** * @notice Constructs the Hayek Cash ERC-20 contract. */ constructor() public ERC20('HCC', 'HCC') { // Mints 1 Hayek Cash to contract creator for initial Uniswap oracle deployment. // Will be burned after oracle deployment _mint(msg.sender, 1 * 10**18); } // function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual override { // super._beforeTokenTransfer(from, to, amount); // require( // to != operator(), // "ok.cash: operator as a recipient is not allowed" // ); // } /** * @notice Operator mints hayek cash to a recipient * @param recipient_ The address of recipient * @param amount_ The amount of ok cash to mint to * @return whether the process has been done */ function mint(address recipient_, uint256 amount_) public onlyOperator returns (bool) { uint256 balanceBefore = balanceOf(recipient_); _mint(recipient_, amount_); uint256 balanceAfter = balanceOf(recipient_); return balanceAfter > balanceBefore; } function burn(uint256 amount) public override onlyOperator { super.burn(amount); } function burnFrom(address account, uint256 amount) public override onlyOperator { super.burnFrom(account, amount); } }
pragma solidity ^0.6.0; import "./owner/Operator.sol"; import "@openzeppelin/contracts/token/ERC20/ERC20Burnable.sol"; contract Bond is ERC20Burnable, Ownable, Operator { /** * @notice Constructs the Hayek Bond ERC-20 contract. */ constructor() public ERC20("HCB", "HCB") {} /** * @notice Operator mints hayek bonds to a recipient * @param recipient_ The address of recipient * @param amount_ The amount of ok bonds to mint to * @return whether the process has been done */ function mint(address recipient_, uint256 amount_) public onlyOperator returns (bool) { uint256 balanceBefore = balanceOf(recipient_); _mint(recipient_, amount_); uint256 balanceAfter = balanceOf(recipient_); return balanceAfter > balanceBefore; } function burn(uint256 amount) public override onlyOperator { super.burn(amount); } function burnFrom(address account, uint256 amount) public override onlyOperator { super.burnFrom(account, amount); } }
{ "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "abi" ] } } }
Contract Security Audit
- No Contract Security Audit Submitted- Submit Audit Here
[{"inputs":[],"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":"previousOperator","type":"address"},{"indexed":true,"internalType":"address","name":"newOperator","type":"address"}],"name":"OperatorTransferred","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":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Transfer","type":"event"},{"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":[{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"burn","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"burnFrom","outputs":[],"stateMutability":"nonpayable","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":"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":"isOperator","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"recipient_","type":"address"},{"internalType":"uint256","name":"amount_","type":"uint256"}],"name":"mint","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"operator","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"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":[{"internalType":"address","name":"newOperator_","type":"address"}],"name":"transferOperator","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"}]
Contract Creation Code
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Swarm Source
ipfs://9458133d37922e98ec3fdebce065ef2d5059eb73569d5fba7107f809fdc2d388
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