Feature Tip: Add private address tag to any address under My Name Tag !
Overview
Max Total Supply
54,575,249.826990948303738309 BAC
Holders
2,968 (0.00%)
Market
Price
$0.00 @ 0.000001 ETH (-0.89%)
Onchain Market Cap
$84,638.57
Circulating Supply Market Cap
$84,639.00
Other Info
Token Contract (WITH 18 Decimals)
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# | Exchange | Pair | Price | 24H Volume | % Volume |
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Contract Name:
Cash
Compiler Version
v0.6.12+commit.27d51765
Optimization Enabled:
No with 200 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
pragma solidity ^0.6.0; import '@openzeppelin/contracts/token/ERC20/ERC20Burnable.sol'; import './owner/Operator.sol'; contract Cash is ERC20Burnable, Operator { /** * @notice Constructs the Basis Cash ERC-20 contract. */ constructor() public ERC20('BAC', 'BAC') { // Mints 1 Basis 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(), // "basis.cash: operator as a recipient is not allowed" // ); // } /** * @notice Operator mints basis cash to a recipient * @param recipient_ The address of recipient * @param amount_ The amount of basis 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; //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/IBasisAsset.sol'; contract Boardroom is ContractGuard, Operator { using SafeERC20 for IERC20; using Address for address; using SafeMath for uint256; using Safe112 for uint112; /* ========== DATA STRUCTURES ========== */ struct Boardseat { uint256 appointmentTime; uint256 shares; } struct BoardSnapshot { uint256 timestamp; uint256 rewardReceived; uint256 totalShares; } /* ========== STATE VARIABLES ========== */ IERC20 private cash; IERC20 private share; mapping(address => Boardseat) private directors; BoardSnapshot[] private boardHistory; /* ========== CONSTRUCTOR ========== */ constructor(IERC20 _cash, IERC20 _share) public { cash = _cash; share = _share; BoardSnapshot memory genesisSnapshot = BoardSnapshot(now, 0, 0); boardHistory.push(genesisSnapshot); } /* ========== Modifiers =============== */ modifier directorExists { require( directors[msg.sender].shares > 0, 'Boardroom: The director does not exist' ); _; } /* ========== VIEW FUNCTIONS ========== */ function totalShare() public view returns (uint256) { return boardHistory[boardHistory.length.sub(1)].totalShares; } function getShareOf(address director) public view returns (uint256) { return directors[director].shares; } function getAppointmentTimeOf(address director) public view returns (uint256) { return directors[director].appointmentTime; } function getCashEarningsOf(address director) public view returns (uint256) { uint256 totalRewards = 0; if (getShareOf(director) <= 0) { return totalRewards; } for (uint256 i = boardHistory.length; i > 0; i = i.sub(1)) { BoardSnapshot memory snapshot = boardHistory[i.sub(1)]; if (snapshot.timestamp < getAppointmentTimeOf(director)) { break; } uint256 snapshotRewards = snapshot .rewardReceived .mul(getShareOf(director)) .div(snapshot.totalShares); totalRewards = totalRewards.add(snapshotRewards); } return totalRewards; } /* ========== MUTATIVE FUNCTIONS ========== */ function claimDividends() public onlyOneBlock { uint256 totalRewards = getCashEarningsOf(msg.sender); directors[msg.sender].appointmentTime = now; if (totalRewards > 0) { cash.safeTransfer(msg.sender, totalRewards); emit RewardPaid(msg.sender, totalRewards); } } function stake(uint256 amount) external { require(amount > 0, 'Boardroom: Cannot stake 0'); // Claim all outstanding dividends before making state changes claimDividends(); // Update director's boardseat Boardseat memory director = directors[msg.sender]; director.shares = director.shares.add(amount); directors[msg.sender] = director; // Update latest snapshot uint256 snapshotIndex = boardHistory.length.sub(1); boardHistory[snapshotIndex].totalShares = totalShare().add(amount); share.safeTransferFrom(msg.sender, address(this), amount); emit Staked(msg.sender, amount); } function withdraw(uint256 amount) public directorExists { require(amount > 0, 'Boardroom: Cannot withdraw 0'); // Claim all outstanding dividends before making state changes claimDividends(); // Update director's boardseat uint256 directorShare = getShareOf(msg.sender); require( directorShare >= amount, 'Boardroom: withdraw request greater than staked amount' ); directors[msg.sender].shares = directorShare.sub(amount); // Update latest snapshot uint256 snapshotIndex = boardHistory.length.sub(1); boardHistory[snapshotIndex].totalShares = totalShare().sub(amount); share.safeTransfer(msg.sender, amount); emit Withdrawn(msg.sender, amount); } function exit() external { withdraw(getShareOf(msg.sender)); } function allocateSeigniorage(uint256 amount) external onlyOneBlock onlyOperator { require(amount > 0, 'Boardroom: Cannot allocate 0'); // Create & add new snapshot BoardSnapshot memory newSnapshot = BoardSnapshot({ timestamp: now, rewardReceived: amount, totalShares: totalShare() }); 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 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 ^0.6.12; contract ContractGuard { mapping(uint256 => mapping(address => bool)) private _status; modifier onlyOneBlock() { require( !_status[block.number][tx.origin], 'ContractGuard: one block, one function' ); _; _status[block.number][tx.origin] = true; } }
pragma solidity ^0.6.0; interface IBasisAsset { 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/token/ERC20/IERC20.sol'; import '../Treasury.sol'; import '../Boardroom.sol'; import '../owner/Operator.sol'; contract Tester is Operator { Treasury public treasury; Boardroom public boardroom; constructor(address _treasury, address _boardroom) public { treasury = Treasury(_treasury); boardroom = Boardroom(_boardroom); } event OKOnlyOperator(address caller); function OnlyOperator() public onlyOperator { emit OKOnlyOperator(msg.sender); } function actionTreasury() public { treasury.allocateSeigniorage(); treasury.allocateSeigniorage(); // should revert } function actionBoardroom(address share, uint256 amount) public { IERC20(share).approve(address(boardroom), amount); boardroom.stake(amount); boardroom.withdraw(amount); // should revert } }
pragma solidity ^0.6.0; import '@openzeppelin/contracts/token/ERC20/IERC20.sol'; import '@openzeppelin/contracts/token/ERC20/SafeERC20.sol'; import '@openzeppelin/contracts/utils/ReentrancyGuard.sol'; import './lib/Babylonian.sol'; import './lib/FixedPoint.sol'; import './lib/Safe112.sol'; import './owner/Operator.sol'; import './utils/ContractGuard.sol'; import './interfaces/IBasisAsset.sol'; import './interfaces/IOracle.sol'; import './interfaces/IBoardroom.sol'; /** * @title Basis Cash Treasury contract * @notice Monetary policy logic to adjust supplies of basis cash assets * @author Summer Smith & Rick Sanchez */ contract Treasury is ContractGuard, Operator { using FixedPoint for *; using SafeERC20 for IERC20; using Address for address; using SafeMath for uint256; using Safe112 for uint112; /* ========= CONSTANT VARIABLES ======== */ uint256 public constant allocationDelay = 1 days; /* ========== STATE VARIABLES ========== */ address private cash; address private bond; address private share; address private boardroom; IOracle private cashOracle; bool private migrated = false; uint256 private seigniorageSaved = 0; uint256 public startTime; uint256 public cashPriceCeiling; uint256 public cashPriceOne; uint256 private bondDepletionFloor; uint256 private lastAllocated; /* ========== CONSTRUCTOR ========== */ constructor( address _cash, address _bond, address _share, address _cashOracle, address _boardroom, uint256 _startTime ) public { cash = _cash; bond = _bond; share = _share; cashOracle = IOracle(_cashOracle); boardroom = _boardroom; startTime = _startTime; cashPriceOne = 10**18; cashPriceCeiling = uint256(105).mul(cashPriceOne).div(10**2); bondDepletionFloor = uint256(1000).mul(cashPriceOne); lastAllocated = now; } /* ========== MODIFIER ========== */ modifier checkMigration { require(!migrated, 'Treasury: this contract has been migrated'); _; } modifier checkOperator { require( IBasisAsset(cash).operator() == address(this), 'Treasury: this contract is not the operator of the basis cash contract' ); require( IBasisAsset(bond).operator() == address(this), 'Treasury: this contract is not the operator of the basis bond contract' ); require( Operator(boardroom).operator() == address(this), 'Treasury: this contract is not the operator of the boardroom contract' ); _; } /* ========== VIEW FUNCTIONS ========== */ function getCashPrice() public view returns (uint256 cashPrice) { try cashOracle.consult(cash, 1e18) returns (uint256 price) { return price; } catch { revert('Treasury: failed to consult cash price from the oracle'); } } /* ========== GOVERNANCE ========== */ function migrate(address target) public onlyOperator checkMigration { require(block.timestamp >= startTime, 'Treasury: not started yet'); // 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); } /* ========== MUTABLE FUNCTIONS ========== */ function _getCashPrice() internal returns (uint256 cashPrice) { cashPrice = getCashPrice(); try cashOracle.update() {} catch { revert('Treasury: failed to update cash oracle'); } } function _allocateSeigniorage(uint256 cashPrice) internal onlyOneBlock checkOperator checkMigration returns (bool, string memory) { if (now.sub(lastAllocated) < allocationDelay) { return (false, 'Treasury: a day has not passed yet'); } if (block.timestamp < startTime) { return (false, 'Treasury: not started yet'); } if (cashPrice <= cashPriceCeiling) { return (false, 'Treasury: there is no seigniorage to be allocated'); } uint256 cashSupply = IERC20(cash).totalSupply(); uint256 percentage = cashPrice.sub(cashPriceOne); uint256 seigniorage = cashSupply.mul(percentage).div(1e18); if (seigniorageSaved > bondDepletionFloor) { IBasisAsset(cash).mint(address(this), seigniorage); IERC20(cash).safeApprove(boardroom, seigniorage); IBoardroom(boardroom).allocateSeigniorage(seigniorage); emit BoardroomFunded(now, seigniorage); } else { seigniorageSaved = seigniorageSaved.add(seigniorage); IBasisAsset(cash).mint(address(this), seigniorage); emit TreasuryFunded(now, seigniorage); } lastAllocated = now; return (true, 'Treasury: success'); } function buyBonds(uint256 amount, uint256 targetPrice) external { require(amount > 0, 'Treasury: cannot purchase bonds with zero amount'); uint256 cashPrice = _getCashPrice(); require(cashPrice == targetPrice, 'Treasury: cash price moved'); _allocateSeigniorage(cashPrice); // ignore returns uint256 bondPrice = cashPrice; IBasisAsset(cash).burnFrom(msg.sender, amount); IBasisAsset(bond).mint(msg.sender, amount.mul(1e18).div(bondPrice)); emit BoughtBonds(msg.sender, amount); } function redeemBonds(uint256 amount, uint256 targetPrice) external { require(amount > 0, 'Treasury: cannot redeem bonds with zero amount'); uint256 cashPrice = _getCashPrice(); require(cashPrice == targetPrice, 'Treasury: cash price moved'); _allocateSeigniorage(cashPrice); // ignore returns require( cashPrice > cashPriceCeiling, 'Treasury: bond redemption failed; basis cash remains depegged.' ); uint256 treasuryBalance = IERC20(cash).balanceOf(address(this)); require( treasuryBalance >= amount, 'Treasury: treasury has no more budget' ); if (seigniorageSaved >= amount) { seigniorageSaved = seigniorageSaved.sub(amount); } else { seigniorageSaved = 0; } IBasisAsset(bond).burnFrom(msg.sender, amount); IERC20(cash).safeTransfer(msg.sender, amount); emit RedeemedBonds(msg.sender, amount); } function allocateSeigniorage() external { uint256 cashPrice = _getCashPrice(); (bool result, string memory reason) = _allocateSeigniorage(cashPrice); require(result, reason); } event Migration(address indexed target); 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); }
// 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; 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; 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; import '@openzeppelin/contracts/math/SafeMath.sol'; import './lib/Babylonian.sol'; import './lib/FixedPoint.sol'; import './lib/UniswapV2Library.sol'; import './lib/UniswapV2OracleLibrary.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 { using FixedPoint for *; uint256 public constant PERIOD = 10 minutes; IUniswapV2Pair public pair; address public token0; address public token1; uint256 public price0CumulativeLast; uint256 public price1CumulativeLast; uint32 public blockTimestampLast; FixedPoint.uq112x112 public price0Average; FixedPoint.uq112x112 public price1Average; constructor( address factory, address tokenA, address tokenB ) public { 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 } /** @dev Updates 1-day EMA price from Uniswap. */ function update() external { ( uint256 price0Cumulative, uint256 price1Cumulative, uint32 blockTimestamp ) = UniswapV2OracleLibrary.currentCumulativePrices(address(pair)); uint32 timeElapsed = blockTimestamp - blockTimestampLast; // overflow is desired if (timeElapsed < PERIOD) { // doesn't need to be updated, since a minimum period is not elapsed yet 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; /* * 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 '@openzeppelin/contracts/token/ERC20/IERC20.sol'; import '../interfaces/IDistributor.sol'; import '../interfaces/IRewardDistributionRecipient.sol'; contract InitialShareDistributor is IDistributor { using SafeMath for uint256; event Distributed(address pool, uint256 cashAmount); bool public once = true; IERC20 public share; IRewardDistributionRecipient public daibacLPPool; uint256 public daibacInitialBalance; IRewardDistributionRecipient public daibasLPPool; uint256 public daibasInitialBalance; constructor( IERC20 _share, IRewardDistributionRecipient _daibacLPPool, uint256 _daibacInitialBalance, IRewardDistributionRecipient _daibasLPPool, uint256 _daibasInitialBalance ) public { share = _share; daibacLPPool = _daibacLPPool; daibacInitialBalance = _daibacInitialBalance; daibasLPPool = _daibasLPPool; daibasInitialBalance = _daibasInitialBalance; } function distribute() public override { require( once, 'InitialShareDistributor: you cannot run this function twice' ); share.transfer(address(daibacLPPool), daibacInitialBalance); daibacLPPool.notifyRewardAmount(daibacInitialBalance); emit Distributed(address(daibacLPPool), daibacInitialBalance); share.transfer(address(daibasLPPool), daibasInitialBalance); daibasLPPool.notifyRewardAmount(daibasInitialBalance); emit Distributed(address(daibasLPPool), daibasInitialBalance); once = false; } }
pragma solidity ^0.6.0; interface IDistributor { function distribute() external; }
pragma solidity ^0.6.0; import '@openzeppelin/contracts/access/Ownable.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; /** *Submitted for verification at Etherscan.io on 2020-07-17 */ /* ____ __ __ __ _ / __/__ __ ___ / /_ / / ___ / /_ (_)__ __ _\ \ / // // _ \/ __// _ \/ -_)/ __// / \ \ / /___/ \_, //_//_/\__//_//_/\__/ \__//_/ /_\_\ /___/ * Synthetix: BASISCASHRewards.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'; contract DAIBASLPTokenSharePool is LPTokenWrapper, IRewardDistributionRecipient { IERC20 public basisShare; 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 RewardPaid(address indexed user, uint256 reward); constructor( address basisShare_, address lptoken_, uint256 starttime_ ) public { basisShare = IERC20(basisShare_); lpt = IERC20(lptoken_); starttime = starttime_; } modifier checkStart() { require( block.timestamp >= starttime, 'DAIBASLPTokenSharePool: 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 (totalSupply() == 0) { return rewardPerTokenStored; } return rewardPerTokenStored.add( lastTimeRewardApplicable() .sub(lastUpdateTime) .mul(rewardRate) .mul(1e18) .div(totalSupply()) ); } function earned(address account) public view returns (uint256) { return balanceOf(account) .mul(rewardPerToken().sub(userRewardPerTokenPaid[account])) .div(1e18) .add(rewards[account]); } // stake visibility is public as overriding LPTokenWrapper's stake() function function stake(uint256 amount) public override updateReward(msg.sender) checkStart { require(amount > 0, 'DAIBASLPTokenSharePool: Cannot stake 0'); super.stake(amount); emit Staked(msg.sender, amount); } function withdraw(uint256 amount) public override updateReward(msg.sender) checkStart { require(amount > 0, 'DAIBASLPTokenSharePool: Cannot withdraw 0'); super.withdraw(amount); 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; basisShare.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); } } }
// 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); } }
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; mapping(address => uint256) private _balances; function totalSupply() public view returns (uint256) { return _totalSupply; } function balanceOf(address account) public view returns (uint256) { return _balances[account]; } function stake(uint256 amount) public virtual { _totalSupply = _totalSupply.add(amount); _balances[msg.sender] = _balances[msg.sender].add(amount); lpt.safeTransferFrom(msg.sender, address(this), amount); } function withdraw(uint256 amount) public virtual { _totalSupply = _totalSupply.sub(amount); _balances[msg.sender] = _balances[msg.sender].sub(amount); lpt.safeTransfer(msg.sender, amount); } }
pragma solidity ^0.6.0; /** *Submitted for verification at Etherscan.io on 2020-07-17 */ /* ____ __ __ __ _ / __/__ __ ___ / /_ / / ___ / /_ (_)__ __ _\ \ / // // _ \/ __// _ \/ -_)/ __// / \ \ / /___/ \_, //_//_/\__//_//_/\__/ \__//_/ /_\_\ /___/ * Synthetix: BASISCASHRewards.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'; contract DAIBACLPTokenSharePool is LPTokenWrapper, IRewardDistributionRecipient { IERC20 public basisShare; uint256 public constant DURATION = 30 days; uint256 public initreward = 18479995 * 10**16; // 184,799.95 Shares uint256 public starttime; // starttime TBD 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 RewardPaid(address indexed user, uint256 reward); constructor( address basisShare_, address lptoken_, uint256 starttime_ ) public { basisShare = IERC20(basisShare_); lpt = IERC20(lptoken_); 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 (totalSupply() == 0) { return rewardPerTokenStored; } return rewardPerTokenStored.add( lastTimeRewardApplicable() .sub(lastUpdateTime) .mul(rewardRate) .mul(1e18) .div(totalSupply()) ); } function earned(address account) public view returns (uint256) { return balanceOf(account) .mul(rewardPerToken().sub(userRewardPerTokenPaid[account])) .div(1e18) .add(rewards[account]); } // stake visibility is public as overriding LPTokenWrapper's stake() function function stake(uint256 amount) public override updateReward(msg.sender) checkhalve checkStart { require(amount > 0, 'Cannot stake 0'); super.stake(amount); emit Staked(msg.sender, amount); } function withdraw(uint256 amount) public override updateReward(msg.sender) checkhalve checkStart { require(amount > 0, 'Cannot withdraw 0'); super.withdraw(amount); 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; basisShare.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; /** *Submitted for verification at Etherscan.io on 2020-07-17 */ /* ____ __ __ __ _ / __/__ __ ___ / /_ / / ___ / /_ (_)__ __ _\ \ / // // _ \/ __// _ \/ -_)/ __// / \ \ / /___/ \_, //_//_/\__//_//_/\__/ \__//_/ /_\_\ /___/ * Synthetix: BASISCASHRewards.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 yCRVWrapper { using SafeMath for uint256; using SafeERC20 for IERC20; IERC20 public ycrv; uint256 private _totalSupply; mapping(address => uint256) private _balances; function totalSupply() public virtual view returns (uint256) { return _totalSupply; } function balanceOf(address account) public virtual view returns (uint256) { return _balances[account]; } function stake(uint256 amount) public virtual { _totalSupply = _totalSupply.add(amount); _balances[msg.sender] = _balances[msg.sender].add(amount); ycrv.safeTransferFrom(msg.sender, address(this), amount); } function withdraw(uint256 amount) public virtual { _totalSupply = _totalSupply.sub(amount); _balances[msg.sender] = _balances[msg.sender].sub(amount); ycrv.safeTransfer(msg.sender, amount); } } contract BACyCRVPool is yCRVWrapper, IRewardDistributionRecipient { IERC20 public basisCash; uint256 public DURATION = 5 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 RewardPaid(address indexed user, uint256 reward); constructor( address basisCash_, address ycrv_, uint256 starttime_ ) public { basisCash = IERC20(basisCash_); ycrv = IERC20(ycrv_); starttime = starttime_; } modifier checkStart() { require(block.timestamp >= starttime, 'BACyCRVPool: 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 (totalSupply() == 0) { return rewardPerTokenStored; } return rewardPerTokenStored.add( lastTimeRewardApplicable() .sub(lastUpdateTime) .mul(rewardRate) .mul(1e18) .div(totalSupply()) ); } function earned(address account) public view returns (uint256) { return balanceOf(account) .mul(rewardPerToken().sub(userRewardPerTokenPaid[account])) .div(1e18) .add(rewards[account]); } // stake visibility is public as overriding LPTokenWrapper's stake() function function stake(uint256 amount) public override updateReward(msg.sender) checkStart { require(amount > 0, 'BACyCRVPool: Cannot stake 0'); uint256 newDeposit = deposits[msg.sender].add(amount); require( newDeposit <= 20000e18, 'BACyCRVPool: deposit amount exceeds maximum 20000' ); deposits[msg.sender] = newDeposit; super.stake(amount); emit Staked(msg.sender, amount); } function withdraw(uint256 amount) public override updateReward(msg.sender) checkStart { require(amount > 0, 'BACyCRVPool: Cannot withdraw 0'); deposits[msg.sender] = deposits[msg.sender].sub(amount); super.withdraw(amount); 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; basisCash.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 '../distribution/BACDAIPool.sol'; import '../distribution/BACSUSDPool.sol'; import '../distribution/BACUSDCPool.sol'; import '../distribution/BACUSDTPool.sol'; import '../distribution/BACyCRVPool.sol'; import '../interfaces/IDistributor.sol'; contract InitialCashDistributor is IDistributor { using SafeMath for uint256; event Distributed(address pool, uint256 cashAmount); bool public once = true; IERC20 public cash; IRewardDistributionRecipient[] public pools; uint256 public totalInitialBalance; constructor( IERC20 _cash, IRewardDistributionRecipient[] memory _pools, uint256 _totalInitialBalance ) public { require(_pools.length != 0, 'a list of BAC pools are required'); cash = _cash; pools = _pools; totalInitialBalance = _totalInitialBalance; } function distribute() public override { require( once, 'InitialCashDistributor: you cannot run this function twice' ); for (uint256 i = 0; i < pools.length; i++) { uint256 amount = totalInitialBalance.div(pools.length); cash.transfer(address(pools[i]), amount); pools[i].notifyRewardAmount(amount); emit Distributed(address(pools[i]), amount); } once = false; } }
pragma solidity ^0.6.0; /** *Submitted for verification at Etherscan.io on 2020-07-17 */ /* ____ __ __ __ _ / __/__ __ ___ / /_ / / ___ / /_ (_)__ __ _\ \ / // // _ \/ __// _ \/ -_)/ __// / \ \ / /___/ \_, //_//_/\__//_//_/\__/ \__//_/ /_\_\ /___/ * Synthetix: BASISCASHRewards.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; mapping(address => uint256) private _balances; function totalSupply() public view returns (uint256) { return _totalSupply; } function balanceOf(address account) public view returns (uint256) { return _balances[account]; } function stake(uint256 amount) public virtual { _totalSupply = _totalSupply.add(amount); _balances[msg.sender] = _balances[msg.sender].add(amount); dai.safeTransferFrom(msg.sender, address(this), amount); } function withdraw(uint256 amount) public virtual { _totalSupply = _totalSupply.sub(amount); _balances[msg.sender] = _balances[msg.sender].sub(amount); dai.safeTransfer(msg.sender, amount); } } contract BACDAIPool is DAIWrapper, IRewardDistributionRecipient { IERC20 public basisCash; uint256 public DURATION = 5 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 RewardPaid(address indexed user, uint256 reward); constructor( address basisCash_, address dai_, uint256 starttime_ ) public { basisCash = IERC20(basisCash_); dai = IERC20(dai_); starttime = starttime_; } modifier checkStart() { require(block.timestamp >= starttime, 'BACDAIPool: 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 (totalSupply() == 0) { return rewardPerTokenStored; } return rewardPerTokenStored.add( lastTimeRewardApplicable() .sub(lastUpdateTime) .mul(rewardRate) .mul(1e18) .div(totalSupply()) ); } function earned(address account) public view returns (uint256) { return balanceOf(account) .mul(rewardPerToken().sub(userRewardPerTokenPaid[account])) .div(1e18) .add(rewards[account]); } // stake visibility is public as overriding LPTokenWrapper's stake() function function stake(uint256 amount) public override updateReward(msg.sender) checkStart { require(amount > 0, 'BACDAIPool: Cannot stake 0'); uint256 newDeposit = deposits[msg.sender].add(amount); require( newDeposit <= 20000e18, 'BACDAIPool: deposit amount exceeds maximum 20000' ); deposits[msg.sender] = newDeposit; super.stake(amount); emit Staked(msg.sender, amount); } function withdraw(uint256 amount) public override updateReward(msg.sender) checkStart { require(amount > 0, 'BACDAIPool: Cannot withdraw 0'); deposits[msg.sender] = deposits[msg.sender].sub(amount); super.withdraw(amount); 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; basisCash.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: BASISCASHRewards.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 SUSDWrapper { using SafeMath for uint256; using SafeERC20 for IERC20; IERC20 public SUSD; uint256 private _totalSupply; mapping(address => uint256) private _balances; function totalSupply() public view returns (uint256) { return _totalSupply; } function balanceOf(address account) public view returns (uint256) { return _balances[account]; } function stake(uint256 amount) public virtual { _totalSupply = _totalSupply.add(amount); _balances[msg.sender] = _balances[msg.sender].add(amount); SUSD.safeTransferFrom(msg.sender, address(this), amount); } function withdraw(uint256 amount) public virtual { _totalSupply = _totalSupply.sub(amount); _balances[msg.sender] = _balances[msg.sender].sub(amount); SUSD.safeTransfer(msg.sender, amount); } } contract BACSUSDPool is SUSDWrapper, IRewardDistributionRecipient { IERC20 public basisCash; uint256 public DURATION = 5 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 RewardPaid(address indexed user, uint256 reward); constructor( address basisCash_, address susd_, uint256 starttime_ ) public { basisCash = IERC20(basisCash_); SUSD = IERC20(susd_); starttime = starttime_; } modifier checkStart() { require(block.timestamp >= starttime, 'BACSUSDPool: 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 (totalSupply() == 0) { return rewardPerTokenStored; } return rewardPerTokenStored.add( lastTimeRewardApplicable() .sub(lastUpdateTime) .mul(rewardRate) .mul(1e18) .div(totalSupply()) ); } function earned(address account) public view returns (uint256) { return balanceOf(account) .mul(rewardPerToken().sub(userRewardPerTokenPaid[account])) .div(1e18) .add(rewards[account]); } // stake visibility is public as overriding LPTokenWrapper's stake() function function stake(uint256 amount) public override updateReward(msg.sender) checkStart { require(amount > 0, 'BACSUSDPool: Cannot stake 0'); uint256 newDeposit = deposits[msg.sender].add(amount); require( newDeposit <= 20000e18, 'BACSUSDPool: deposit amount exceeds maximum 20000' ); deposits[msg.sender] = newDeposit; super.stake(amount); emit Staked(msg.sender, amount); } function withdraw(uint256 amount) public override updateReward(msg.sender) checkStart { require(amount > 0, 'BACSUSDPool: Cannot withdraw 0'); deposits[msg.sender] = deposits[msg.sender].sub(amount); super.withdraw(amount); 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; basisCash.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: BASISCASHRewards.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; mapping(address => uint256) private _balances; function totalSupply() public view returns (uint256) { return _totalSupply; } function balanceOf(address account) public view returns (uint256) { return _balances[account]; } function stake(uint256 amount) public virtual { _totalSupply = _totalSupply.add(amount); _balances[msg.sender] = _balances[msg.sender].add(amount); usdc.safeTransferFrom(msg.sender, address(this), amount); } function withdraw(uint256 amount) public virtual { _totalSupply = _totalSupply.sub(amount); _balances[msg.sender] = _balances[msg.sender].sub(amount); usdc.safeTransfer(msg.sender, amount); } } contract BACUSDCPool is USDCWrapper, IRewardDistributionRecipient { IERC20 public basisCash; uint256 public DURATION = 5 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 RewardPaid(address indexed user, uint256 reward); constructor( address basisCash_, address usdc_, uint256 starttime_ ) public { basisCash = IERC20(basisCash_); usdc = IERC20(usdc_); starttime = starttime_; } modifier checkStart() { require(block.timestamp >= starttime, 'BACUSDCPool: 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 (totalSupply() == 0) { return rewardPerTokenStored; } return rewardPerTokenStored.add( lastTimeRewardApplicable() .sub(lastUpdateTime) .mul(rewardRate) .mul(1e18) .div(totalSupply()) ); } function earned(address account) public view returns (uint256) { return balanceOf(account) .mul(rewardPerToken().sub(userRewardPerTokenPaid[account])) .div(1e18) .add(rewards[account]); } // stake visibility is public as overriding LPTokenWrapper's stake() function function stake(uint256 amount) public override updateReward(msg.sender) checkStart { require(amount > 0, 'BACUSDCPool: Cannot stake 0'); uint256 newDeposit = deposits[msg.sender].add(amount); require( newDeposit <= 20000e6, 'BACUSDCPool: deposit amount exceeds maximum 20000' ); deposits[msg.sender] = newDeposit; super.stake(amount); emit Staked(msg.sender, amount); } function withdraw(uint256 amount) public override updateReward(msg.sender) checkStart { require(amount > 0, 'BACUSDCPool: Cannot withdraw 0'); deposits[msg.sender] = deposits[msg.sender].sub(amount); super.withdraw(amount); 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; basisCash.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: BASISCASHRewards.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; mapping(address => uint256) private _balances; function totalSupply() public view returns (uint256) { return _totalSupply; } function balanceOf(address account) public view returns (uint256) { return _balances[account]; } function stake(uint256 amount) public virtual { _totalSupply = _totalSupply.add(amount); _balances[msg.sender] = _balances[msg.sender].add(amount); usdt.safeTransferFrom(msg.sender, address(this), amount); } function withdraw(uint256 amount) public virtual { _totalSupply = _totalSupply.sub(amount); _balances[msg.sender] = _balances[msg.sender].sub(amount); usdt.safeTransfer(msg.sender, amount); } } contract BACUSDTPool is USDTWrapper, IRewardDistributionRecipient { IERC20 public basisCash; uint256 public DURATION = 5 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 RewardPaid(address indexed user, uint256 reward); constructor( address basisCash_, address usdt_, uint256 starttime_ ) public { basisCash = IERC20(basisCash_); usdt = IERC20(usdt_); starttime = starttime_; } modifier checkStart() { require(block.timestamp >= starttime, 'BACUSDTPool: 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 (totalSupply() == 0) { return rewardPerTokenStored; } return rewardPerTokenStored.add( lastTimeRewardApplicable() .sub(lastUpdateTime) .mul(rewardRate) .mul(1e18) .div(totalSupply()) ); } function earned(address account) public view returns (uint256) { return balanceOf(account) .mul(rewardPerToken().sub(userRewardPerTokenPaid[account])) .div(1e18) .add(rewards[account]); } // stake visibility is public as overriding LPTokenWrapper's stake() function function stake(uint256 amount) public override updateReward(msg.sender) checkStart { require(amount > 0, 'BACUSDTPool: Cannot stake 0'); uint256 newDeposit = deposits[msg.sender].add(amount); require( newDeposit <= 20000e6, 'BACUSDTPool: deposit amount exceeds maximum 20000' ); deposits[msg.sender] = newDeposit; super.stake(amount); emit Staked(msg.sender, amount); } function withdraw(uint256 amount) public override updateReward(msg.sender) checkStart { require(amount > 0, 'BACUSDTPool: Cannot withdraw 0'); deposits[msg.sender] = deposits[msg.sender].sub(amount); super.withdraw(amount); 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; basisCash.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(); } } }
// 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 Basis 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 './owner/Operator.sol'; import '@openzeppelin/contracts/token/ERC20/ERC20Burnable.sol'; contract Share is ERC20Burnable, Operator { constructor() public ERC20('BAS', 'BAS') { // Mints 1 Basis Share to contract creator for initial Uniswap oracle deployment. // Will be burned after oracle deployment _mint(msg.sender, 1 * 10**18); } /** * @notice Operator mints basis cash to a recipient * @param recipient_ The address of recipient * @param amount_ The amount of basis 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; import './owner/Operator.sol'; import '@openzeppelin/contracts/token/ERC20/ERC20Burnable.sol'; contract Bond is ERC20Burnable, Ownable, Operator { /** * @notice Constructs the Basis Bond ERC-20 contract. */ constructor() public ERC20('BAB', 'BAB') {} /** * @notice Operator mints basis bonds to a recipient * @param recipient_ The address of recipient * @param amount_ The amount of basis 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); } }
pragma solidity ^0.6.0; interface IUniswapV2Callee { function uniswapV2Call( address sender, uint256 amount0, uint256 amount1, bytes calldata data ) external; }
pragma solidity ^0.6.0; interface IUniswapV2ERC20 { 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; }
// SPDX-License-Identifier: MIT pragma solidity >=0.4.22 <0.8.0; contract Migrations { address public owner; uint256 public last_completed_migration; constructor() public { owner = msg.sender; } modifier restricted() { if (msg.sender == owner) _; } function setCompleted(uint256 completed) public restricted { last_completed_migration = completed; } }
{ "optimizer": { "enabled": false, "runs": 200 }, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "abi" ] } }, "libraries": {} }
Contract Security Audit
- No Contract Security Audit Submitted- Submit Audit Here
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tion"}]
Contract Creation Code
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