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- ERC-20 Tokens (2)15,000 TokenERC-20 TOKEN*[Spam]9,000,000,000 TokenERC-20 TOKEN*[Spam]NFT Tokens (14)AAVE-V3-POSAave Positions AirdropERC-1155UNI-V3-PoSUniswap V3 Positions NFT-V1ERC-1155UNI-V3-PoSUniswap V3 Positions NFT-V1ERC-1155ERC-1155 TOKEN*[Spam]ERC-1155 TOKEN*[Spam]
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Parent Transaction Hash Block From To 45180007 2023-07-17 8:22:36 515 days ago 1689582156 Contract Creation 0 POL$0.00 Loading...LoadingContract Name:RewardManagerL2
Compiler Versionv0.8.17+commit.8df45f5f
Optimization Enabled:Yes with 200 runs
Other Settings:default evmVersionContract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: BUSL-1.1 pragma solidity 0.8.17; // contracts import "./FarmingRange.sol"; // libraries import "../core/libraries/TransferHelper.sol"; // interfaces import "@openzeppelin/contracts/token/ERC20/IERC20.sol"; import "./interfaces/IRewardManagerL2.sol"; /** * @title RewardManagerL2 * @notice RewardManagerL2 handles the creation of the contract farming * The RewardManager is the owner of the funds in the FarmingRange, * only the RewardManager is capable of sending funds to be farmed and only the RewardManager will get * the funds back when updating of removing campaigns. */ contract RewardManagerL2 is IRewardManagerL2 { bytes4 private constant TRANSFER_OWNERSHIP_SELECTOR = bytes4(keccak256(bytes("transferOwnership(address)"))); IFarmingRange public immutable farming; /** * @param _farmingOwner address who will own the farming */ constructor(address _farmingOwner) { farming = new FarmingRange(address(this)); address(farming).call(abi.encodeWithSelector(TRANSFER_OWNERSHIP_SELECTOR, _farmingOwner)); } /// @inheritdoc IRewardManagerL2 function resetAllowance(uint256 _campaignId) external { require(_campaignId < farming.campaignInfoLen(), "RewardManager:campaignId:wrong campaign ID"); (, IERC20 _rewardToken, , , , , ) = farming.campaignInfo(_campaignId); // In case of tokens like USDT, an approval must be set to zero before setting it to another value. // Unlike most tokens, USDT does not ignore a non-zero current allowance value, leading to a possible // transaction failure when you are trying to change the allowance. if (_rewardToken.allowance(address(this), address(farming)) != 0) { TransferHelper.safeApprove(address(_rewardToken), address(farming), 0); } // After ensuring that the allowance is zero (or it was zero to begin with), we then set the allowance to max. TransferHelper.safeApprove(address(_rewardToken), address(farming), type(uint256).max); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.0) (access/Ownable.sol) pragma solidity ^0.8.0; import "../utils/Context.sol"; /** * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * By default, the owner account will be the one that deploys the contract. This * can later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. */ abstract contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the deployer as the initial owner. */ constructor() { _transferOwnership(_msgSender()); } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { _checkOwner(); _; } /** * @dev Returns the address of the current owner. */ function owner() public view virtual returns (address) { return _owner; } /** * @dev Throws if the sender is not the owner. */ function _checkOwner() internal view virtual { require(owner() == _msgSender(), "Ownable: caller is not the owner"); } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby disabling any functionality that is only available to the owner. */ function renounceOwnership() public virtual onlyOwner { _transferOwnership(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"); _transferOwnership(newOwner); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Internal function without access restriction. */ function _transferOwnership(address newOwner) internal virtual { address oldOwner = _owner; _owner = newOwner; emit OwnershipTransferred(oldOwner, newOwner); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (interfaces/IERC20.sol) pragma solidity ^0.8.0; import "../token/ERC20/IERC20.sol";
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.0) (security/ReentrancyGuard.sol) pragma solidity ^0.8.0; /** * @dev Contract module that helps prevent reentrant calls to a function. * * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier * available, which can be applied to functions to make sure there are no nested * (reentrant) calls to them. * * Note that because there is a single `nonReentrant` guard, functions marked as * `nonReentrant` may not call one another. This can be worked around by making * those functions `private`, and then adding `external` `nonReentrant` entry * points to them. * * TIP: If you would like to learn more about reentrancy and alternative ways * to protect against it, check out our blog post * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul]. */ abstract contract ReentrancyGuard { // Booleans are more expensive than uint256 or any type that takes up a full // word because each write operation emits an extra SLOAD to first read the // slot's contents, replace the bits taken up by the boolean, and then write // back. This is the compiler's defense against contract upgrades and // pointer aliasing, and it cannot be disabled. // The values being non-zero value makes deployment a bit more expensive, // but in exchange the refund on every call to nonReentrant will be lower in // amount. Since refunds are capped to a percentage of the total // transaction's gas, it is best to keep them low in cases like this one, to // increase the likelihood of the full refund coming into effect. uint256 private constant _NOT_ENTERED = 1; uint256 private constant _ENTERED = 2; uint256 private _status; constructor() { _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 making it call a * `private` function that does the actual work. */ modifier nonReentrant() { _nonReentrantBefore(); _; _nonReentrantAfter(); } function _nonReentrantBefore() private { // On the first call to nonReentrant, _status will be _NOT_ENTERED require(_status != _ENTERED, "ReentrancyGuard: reentrant call"); // Any calls to nonReentrant after this point will fail _status = _ENTERED; } function _nonReentrantAfter() private { // By storing the original value once again, a refund is triggered (see // https://eips.ethereum.org/EIPS/eip-2200) _status = _NOT_ENTERED; } /** * @dev Returns true if the reentrancy guard is currently set to "entered", which indicates there is a * `nonReentrant` function in the call stack. */ function _reentrancyGuardEntered() internal view returns (bool) { return _status == _ENTERED; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/extensions/draft-IERC20Permit.sol) pragma solidity ^0.8.0; // EIP-2612 is Final as of 2022-11-01. This file is deprecated. import "./IERC20Permit.sol";
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/extensions/IERC20Permit.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612]. * * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by * presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't * need to send a transaction, and thus is not required to hold Ether at all. */ interface IERC20Permit { /** * @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens, * given ``owner``'s signed approval. * * IMPORTANT: The same issues {IERC20-approve} has related to transaction * ordering also apply here. * * Emits an {Approval} event. * * Requirements: * * - `spender` cannot be the zero address. * - `deadline` must be a timestamp in the future. * - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner` * over the EIP712-formatted function arguments. * - the signature must use ``owner``'s current nonce (see {nonces}). * * For more information on the signature format, see the * https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP * section]. */ function permit( address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s ) external; /** * @dev Returns the current nonce for `owner`. This value must be * included whenever a signature is generated for {permit}. * * Every successful call to {permit} increases ``owner``'s nonce by one. This * prevents a signature from being used multiple times. */ function nonces(address owner) external view returns (uint256); /** * @dev Returns the domain separator used in the encoding of the signature for {permit}, as defined by {EIP712}. */ // solhint-disable-next-line func-name-mixedcase function DOMAIN_SEPARATOR() external view returns (bytes32); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/IERC20.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20 { /** * @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); /** * @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 `to`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address to, 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 `from` to `to` 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 from, address to, uint256 amount) external returns (bool); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/utils/SafeERC20.sol) pragma solidity ^0.8.0; import "../IERC20.sol"; import "../extensions/IERC20Permit.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 Address for address; /** * @dev Transfer `value` amount of `token` from the calling contract to `to`. If `token` returns no value, * non-reverting calls are assumed to be successful. */ function safeTransfer(IERC20 token, address to, uint256 value) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value)); } /** * @dev Transfer `value` amount of `token` from `from` to `to`, spending the approval given by `from` to the * calling contract. If `token` returns no value, non-reverting calls are assumed to be successful. */ 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' 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)); } /** * @dev Increase the calling contract's allowance toward `spender` by `value`. If `token` returns no value, * non-reverting calls are assumed to be successful. */ function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 oldAllowance = token.allowance(address(this), spender); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, oldAllowance + value)); } /** * @dev Decrease the calling contract's allowance toward `spender` by `value`. If `token` returns no value, * non-reverting calls are assumed to be successful. */ function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal { unchecked { uint256 oldAllowance = token.allowance(address(this), spender); require(oldAllowance >= value, "SafeERC20: decreased allowance below zero"); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, oldAllowance - value)); } } /** * @dev Set the calling contract's allowance toward `spender` to `value`. If `token` returns no value, * non-reverting calls are assumed to be successful. Compatible with tokens that require the approval to be set to * 0 before setting it to a non-zero value. */ function forceApprove(IERC20 token, address spender, uint256 value) internal { bytes memory approvalCall = abi.encodeWithSelector(token.approve.selector, spender, value); if (!_callOptionalReturnBool(token, approvalCall)) { _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, 0)); _callOptionalReturn(token, approvalCall); } } /** * @dev Use a ERC-2612 signature to set the `owner` approval toward `spender` on `token`. * Revert on invalid signature. */ function safePermit( IERC20Permit token, address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s ) internal { uint256 nonceBefore = token.nonces(owner); token.permit(owner, spender, value, deadline, v, r, s); uint256 nonceAfter = token.nonces(owner); require(nonceAfter == nonceBefore + 1, "SafeERC20: permit did not succeed"); } /** * @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"); require(returndata.length == 0 || abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed"); } /** * @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). * * This is a variant of {_callOptionalReturn} that silents catches all reverts and returns a bool instead. */ function _callOptionalReturnBool(IERC20 token, bytes memory data) private returns (bool) { // 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 cannot use {Address-functionCall} here since this should return false // and not revert is the subcall reverts. (bool success, bytes memory returndata) = address(token).call(data); return success && (returndata.length == 0 || abi.decode(returndata, (bool))) && Address.isContract(address(token)); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.0) (utils/Address.sol) pragma solidity ^0.8.1; /** * @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 * * Furthermore, `isContract` will also return true if the target contract within * the same transaction is already scheduled for destruction by `SELFDESTRUCT`, * which only has an effect at the end of a transaction. * ==== * * [IMPORTANT] * ==== * You shouldn't rely on `isContract` to protect against flash loan attacks! * * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract * constructor. * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize/address.code.length, which returns 0 // for contracts in construction, since the code is only stored at the end // of the constructor execution. return account.code.length > 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://consensys.net/diligence/blog/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/v0.8.0/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"); (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 functionCallWithValue(target, data, 0, "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"); (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResultFromTarget(target, success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall( address target, bytes memory data, string memory errorMessage ) internal view returns (bytes memory) { (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResultFromTarget(target, success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { (bool success, bytes memory returndata) = target.delegatecall(data); return verifyCallResultFromTarget(target, success, returndata, errorMessage); } /** * @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling * the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract. * * _Available since v4.8._ */ function verifyCallResultFromTarget( address target, bool success, bytes memory returndata, string memory errorMessage ) internal view returns (bytes memory) { if (success) { if (returndata.length == 0) { // only check isContract if the call was successful and the return data is empty // otherwise we already know that it was a contract require(isContract(target), "Address: call to non-contract"); } return returndata; } else { _revert(returndata, errorMessage); } } /** * @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the * revert reason or using the provided one. * * _Available since v4.3._ */ function verifyCallResult( bool success, bytes memory returndata, string memory errorMessage ) internal pure returns (bytes memory) { if (success) { return returndata; } else { _revert(returndata, errorMessage); } } function _revert(bytes memory returndata, string memory errorMessage) private pure { // 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 /// @solidity memory-safe-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/Context.sol) pragma solidity ^0.8.0; /** * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with 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) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } }
// SPDX-License-Identifier: GPL-3.0-or-later pragma solidity =0.8.17; /** * @title TransferHelper * @notice helper methods for interacting with ERC20 tokens and sending ETH that do not consistently return true/false * @custom:from Uniswap lib, adapted to version 0.8.17 * @custom:url https://github.com/Uniswap/solidity-lib/blob/master/contracts/libraries/TransferHelper.sol */ library TransferHelper { function safeApprove(address token, address to, uint256 value) internal { // bytes4(keccak256(bytes('approve(address,uint256)'))); (bool success, bytes memory data) = token.call(abi.encodeWithSelector(0x095ea7b3, to, value)); require( success && (data.length == 0 || abi.decode(data, (bool))), "TransferHelper::safeApprove: approve failed" ); } function safeTransfer(address token, address to, uint256 value) internal { // bytes4(keccak256(bytes('transfer(address,uint256)'))); (bool success, bytes memory data) = token.call(abi.encodeWithSelector(0xa9059cbb, to, value)); require( success && (data.length == 0 || abi.decode(data, (bool))), "TransferHelper::safeTransfer: transfer failed" ); } function safeTransferFrom(address token, address from, address to, uint256 value) internal { // bytes4(keccak256(bytes('transferFrom(address,address,uint256)'))); (bool success, bytes memory data) = token.call(abi.encodeWithSelector(0x23b872dd, from, to, value)); require( success && (data.length == 0 || abi.decode(data, (bool))), "TransferHelper::transferFrom: transferFrom failed" ); } function safeTransferETH(address to, uint256 value) internal { (bool success, ) = to.call{ value: value }(new bytes(0)); require(success, "TransferHelper::safeTransferETH: ETH transfer failed"); } }
// SPDX-License-Identifier: MIT pragma solidity 0.8.17; // contracts import "@openzeppelin/contracts/access/Ownable.sol"; import "@openzeppelin/contracts/security/ReentrancyGuard.sol"; // libraries import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol"; // interfaces import "@openzeppelin/contracts/interfaces/IERC20.sol"; import "@openzeppelin/contracts/token/ERC20/extensions/draft-IERC20Permit.sol"; import "./interfaces/IFarmingRange.sol"; /** * @title FarmingRange * @notice Farming Range allows users to stake LP Tokens to receive various rewards * @custom:from Contract taken from the alpaca protocol, adapted to version 0.8.17 and modified with more functions * @custom:url https://github.com/alpaca-finance/bsc-alpaca-contract/blob/main/solidity/contracts/6.12/GrazingRange.sol */ contract FarmingRange is IFarmingRange, Ownable, ReentrancyGuard { using SafeERC20 for IERC20; mapping(uint256 => RewardInfo[]) public campaignRewardInfo; CampaignInfo[] public campaignInfo; mapping(uint256 => mapping(address => UserInfo)) public userInfo; uint256 public rewardInfoLimit; address public immutable rewardManager; constructor(address _rewardManager) { rewardInfoLimit = 52; require(_rewardManager != address(0), "FarmingRange::constructor::Reward manager is not defined"); rewardManager = _rewardManager; } /// @inheritdoc IFarmingRange function setRewardInfoLimit(uint256 _updatedRewardInfoLimit) external onlyOwner { rewardInfoLimit = _updatedRewardInfoLimit; emit SetRewardInfoLimit(rewardInfoLimit); } /// @inheritdoc IFarmingRange function addCampaignInfo( IERC20 _stakingToken, IERC20 _rewardToken, uint256 _startBlock ) external virtual onlyOwner { require(_startBlock > block.number, "FarmingRange::addCampaignInfo::Start block should be in the future"); campaignInfo.push( CampaignInfo({ stakingToken: _stakingToken, rewardToken: _rewardToken, startBlock: _startBlock, lastRewardBlock: _startBlock, accRewardPerShare: 0, totalStaked: 0, totalRewards: 0 }) ); emit AddCampaignInfo(campaignInfo.length - 1, _stakingToken, _rewardToken, _startBlock); } /// @inheritdoc IFarmingRange function addRewardInfo( uint256 _campaignID, uint256 _endBlock, uint256 _rewardPerBlock ) public virtual onlyOwner nonReentrant { RewardInfo[] storage rewardInfo = campaignRewardInfo[_campaignID]; CampaignInfo storage campaign = campaignInfo[_campaignID]; require( rewardInfo.length < rewardInfoLimit, "FarmingRange::addRewardInfo::reward info length exceeds the limit" ); require( rewardInfo.length == 0 || rewardInfo[rewardInfo.length - 1].endBlock >= block.number, "FarmingRange::addRewardInfo::reward period ended" ); require( rewardInfo.length == 0 || rewardInfo[rewardInfo.length - 1].endBlock < _endBlock, "FarmingRange::addRewardInfo::bad new endblock" ); uint256 _startBlock = rewardInfo.length == 0 ? campaign.startBlock : rewardInfo[rewardInfo.length - 1].endBlock; uint256 _blockRange = _endBlock - _startBlock; uint256 _totalRewards = _rewardPerBlock * _blockRange; campaign.totalRewards = campaign.totalRewards + _totalRewards; rewardInfo.push(RewardInfo({ endBlock: _endBlock, rewardPerBlock: _rewardPerBlock })); _transferFromWithAllowance(campaign.rewardToken, _totalRewards, _campaignID); emit AddRewardInfo(_campaignID, rewardInfo.length - 1, _endBlock, _rewardPerBlock); } /// @inheritdoc IFarmingRange function addRewardInfoMultiple( uint256 _campaignID, uint256[] calldata _endBlock, uint256[] calldata _rewardPerBlock ) external onlyOwner { require(_endBlock.length == _rewardPerBlock.length, "FarmingRange::addRewardMultiple::wrong parameters length"); for (uint256 _i; _i != _endBlock.length; ) { addRewardInfo(_campaignID, _endBlock[_i], _rewardPerBlock[_i]); unchecked { ++_i; } } } /// @inheritdoc IFarmingRange function updateRewardInfo( uint256 _campaignID, uint256 _rewardIndex, uint256 _endBlock, uint256 _rewardPerBlock ) public virtual onlyOwner nonReentrant { RewardInfo[] storage rewardInfo = campaignRewardInfo[_campaignID]; CampaignInfo storage campaign = campaignInfo[_campaignID]; RewardInfo storage selectedRewardInfo = rewardInfo[_rewardIndex]; uint256 _previousEndBlock = selectedRewardInfo.endBlock; _updateCampaign(_campaignID); require(_previousEndBlock >= block.number, "FarmingRange::updateRewardInfo::reward period ended"); if (_rewardIndex != 0) { require( rewardInfo[_rewardIndex - 1].endBlock < _endBlock, "FarmingRange::updateRewardInfo::bad new endblock" ); } if (rewardInfo.length > _rewardIndex + 1) { require( _endBlock < rewardInfo[_rewardIndex + 1].endBlock, "FarmingRange::updateRewardInfo::reward period end is in next range" ); } (bool _refund, uint256 _diff) = _updateRewardsDiff( _rewardIndex, _endBlock, _rewardPerBlock, rewardInfo, campaign, selectedRewardInfo ); if (!_refund && _diff != 0) { _transferFromWithAllowance(campaign.rewardToken, _diff, _campaignID); } // If _endblock is changed, and if we have another range after the updated one, // we need to update rewardPerBlock to distribute on the next new range or we could run out of tokens if (_endBlock != _previousEndBlock && rewardInfo.length - 1 > _rewardIndex) { RewardInfo storage nextRewardInfo = rewardInfo[_rewardIndex + 1]; uint256 _nextRewardInfoEndBlock = nextRewardInfo.endBlock; uint256 _initialBlockRange = _nextRewardInfoEndBlock - _previousEndBlock; uint256 _nextBlockRange = _nextRewardInfoEndBlock - _endBlock; uint256 _currentRewardPerBlock = nextRewardInfo.rewardPerBlock; uint256 _initialNextTotal = _initialBlockRange * _currentRewardPerBlock; _currentRewardPerBlock = (_currentRewardPerBlock * _initialBlockRange) / _nextBlockRange; uint256 _nextTotal = _nextBlockRange * _currentRewardPerBlock; nextRewardInfo.rewardPerBlock = _currentRewardPerBlock; if (_nextTotal < _initialNextTotal) { campaign.rewardToken.safeTransfer(rewardManager, _initialNextTotal - _nextTotal); campaign.totalRewards -= _initialNextTotal - _nextTotal; } } // UPDATE total campaign.totalRewards = _refund ? campaign.totalRewards - _diff : campaign.totalRewards + _diff; selectedRewardInfo.endBlock = _endBlock; selectedRewardInfo.rewardPerBlock = _rewardPerBlock; emit UpdateRewardInfo(_campaignID, _rewardIndex, _endBlock, _rewardPerBlock); } /// @inheritdoc IFarmingRange function updateRewardMultiple( uint256 _campaignID, uint256[] memory _rewardIndex, uint256[] memory _endBlock, uint256[] memory _rewardPerBlock ) public onlyOwner { require( _rewardIndex.length == _endBlock.length && _rewardIndex.length == _rewardPerBlock.length, "FarmingRange::updateRewardMultiple::wrong parameters length" ); for (uint256 _i; _i != _rewardIndex.length; ) { updateRewardInfo(_campaignID, _rewardIndex[_i], _endBlock[_i], _rewardPerBlock[_i]); unchecked { ++_i; } } } /// @inheritdoc IFarmingRange function updateCampaignsRewards( uint256[] calldata _campaignID, uint256[][] calldata _rewardIndex, uint256[][] calldata _endBlock, uint256[][] calldata _rewardPerBlock ) external onlyOwner { require( _campaignID.length == _rewardIndex.length && _rewardIndex.length == _endBlock.length && _rewardIndex.length == _rewardPerBlock.length, "FarmingRange::updateCampaignsRewards::wrong rewardInfo length" ); for (uint256 _i; _i != _campaignID.length; ) { updateRewardMultiple(_campaignID[_i], _rewardIndex[_i], _endBlock[_i], _rewardPerBlock[_i]); unchecked { ++_i; } } } /// @inheritdoc IFarmingRange function removeLastRewardInfo(uint256 _campaignID) external virtual onlyOwner { RewardInfo[] storage rewardInfo = campaignRewardInfo[_campaignID]; CampaignInfo storage campaign = campaignInfo[_campaignID]; uint256 _rewardInfoLength = rewardInfo.length; require(_rewardInfoLength != 0, "FarmingRange::updateCampaignsRewards::no rewardInfoLen"); RewardInfo storage lastRewardInfo = rewardInfo[_rewardInfoLength - 1]; uint256 _lastRewardInfoEndBlock = lastRewardInfo.endBlock; require(_lastRewardInfoEndBlock > block.number, "FarmingRange::removeLastRewardInfo::reward period ended"); _updateCampaign(_campaignID); if (lastRewardInfo.rewardPerBlock != 0) { (bool _refund, uint256 _diff) = _updateRewardsDiff( _rewardInfoLength - 1, _lastRewardInfoEndBlock, 0, rewardInfo, campaign, lastRewardInfo ); if (_refund) { campaign.totalRewards = campaign.totalRewards - _diff; } } rewardInfo.pop(); emit RemoveRewardInfo(_campaignID, _rewardInfoLength - 1); } /// @inheritdoc IFarmingRange function rewardInfoLen(uint256 _campaignID) external view returns (uint256) { return campaignRewardInfo[_campaignID].length; } /// @inheritdoc IFarmingRange function campaignInfoLen() external view returns (uint256) { return campaignInfo.length; } /// @inheritdoc IFarmingRange function currentEndBlock(uint256 _campaignID) external view virtual returns (uint256) { return _endBlockOf(_campaignID, block.number); } /// @inheritdoc IFarmingRange function currentRewardPerBlock(uint256 _campaignID) external view virtual returns (uint256) { return _rewardPerBlockOf(_campaignID, block.number); } /// @inheritdoc IFarmingRange function getMultiplier(uint256 _from, uint256 _to, uint256 _endBlock) public pure returns (uint256) { if ((_from >= _endBlock) || (_from > _to)) { return 0; } if (_to <= _endBlock) { return _to - _from; } return _endBlock - _from; } /// @inheritdoc IFarmingRange function pendingReward(uint256 _campaignID, address _user) external view returns (uint256) { return _pendingReward(_campaignID, userInfo[_campaignID][_user].amount, userInfo[_campaignID][_user].rewardDebt); } /// @inheritdoc IFarmingRange function updateCampaign(uint256 _campaignID) external nonReentrant { _updateCampaign(_campaignID); } /// @inheritdoc IFarmingRange function massUpdateCampaigns() external nonReentrant { uint256 _length = campaignInfo.length; for (uint256 _i; _i != _length; ) { _updateCampaign(_i); unchecked { ++_i; } } } /// @inheritdoc IFarmingRange function deposit(uint256 _campaignID, uint256 _amount) public nonReentrant { CampaignInfo storage campaign = campaignInfo[_campaignID]; UserInfo storage user = userInfo[_campaignID][msg.sender]; _updateCampaign(_campaignID); if (user.amount != 0) { uint256 _pending = (user.amount * campaign.accRewardPerShare) / 1e20 - user.rewardDebt; if (_pending != 0) { campaign.rewardToken.safeTransfer(address(msg.sender), _pending); } } if (_amount != 0) { user.amount = user.amount + _amount; campaign.totalStaked = campaign.totalStaked + _amount; campaign.stakingToken.safeTransferFrom(msg.sender, address(this), _amount); } user.rewardDebt = (user.amount * campaign.accRewardPerShare) / (1e20); emit Deposit(msg.sender, _amount, _campaignID); } /// @inheritdoc IFarmingRange function depositWithPermit( uint256 _campaignID, uint256 _amount, bool _approveMax, uint256 _deadline, uint8 _v, bytes32 _r, bytes32 _s ) external { SafeERC20.safePermit( IERC20Permit(address(campaignInfo[_campaignID].stakingToken)), msg.sender, address(this), _approveMax ? type(uint256).max : _amount, _deadline, _v, _r, _s ); deposit(_campaignID, _amount); } /// @inheritdoc IFarmingRange function withdraw(uint256 _campaignID, uint256 _amount) external nonReentrant { _withdraw(_campaignID, _amount); } /// @inheritdoc IFarmingRange function harvest(uint256[] calldata _campaignIDs) external nonReentrant { for (uint256 _i; _i != _campaignIDs.length; ) { _withdraw(_campaignIDs[_i], 0); unchecked { ++_i; } } } /// @inheritdoc IFarmingRange function emergencyWithdraw(uint256 _campaignID) external nonReentrant { CampaignInfo storage campaign = campaignInfo[_campaignID]; UserInfo storage user = userInfo[_campaignID][msg.sender]; uint256 _amount = user.amount; campaign.totalStaked = campaign.totalStaked - _amount; user.amount = 0; user.rewardDebt = 0; campaign.stakingToken.safeTransfer(msg.sender, _amount); emit EmergencyWithdraw(msg.sender, _amount, _campaignID); } /** * @notice function to trick the compilator to use safeTransferFrom in try catch * @param _token token to interact with * @param _from address who own token * @param _to address to transfer token * @param _amount quantity to be transferred */ function attemptTransfer(IERC20 _token, address _from, address _to, uint256 _amount) external { require(msg.sender == address(this), "FarmingRange::attemptTransfer::Sender not farming"); // this function should be called only by this contract _token.safeTransferFrom(_from, _to, _amount); } /** * @notice return the endblock of the phase that contains _blockNumber * @param _campaignID the campaign id of the phases to check * @param _blockNumber the block number to check * @return the endblock of the phase that contains _blockNumber */ function _endBlockOf(uint256 _campaignID, uint256 _blockNumber) internal view returns (uint256) { RewardInfo[] memory rewardInfo = campaignRewardInfo[_campaignID]; uint256 _len = rewardInfo.length; if (_len == 0) { return 0; } for (uint256 _i; _i != _len; ) { if (_blockNumber <= rewardInfo[_i].endBlock) { return rewardInfo[_i].endBlock; } unchecked { ++_i; } } /// @dev when couldn't find any reward info, it means that _blockNumber exceed endblock /// so return the latest reward info. return rewardInfo[_len - 1].endBlock; } /** * @notice return the rewardPerBlock of the phase that contains _blockNumber * @param _campaignID the campaign id of the phases to check * @param _blockNumber the block number to check * @return the rewardPerBlock of the phase that contains _blockNumber */ function _rewardPerBlockOf(uint256 _campaignID, uint256 _blockNumber) internal view returns (uint256) { RewardInfo[] memory rewardInfo = campaignRewardInfo[_campaignID]; uint256 _len = rewardInfo.length; if (_len == 0) { return 0; } for (uint256 _i; _i != _len; ) { if (_blockNumber <= rewardInfo[_i].endBlock) { return rewardInfo[_i].rewardPerBlock; } unchecked { ++_i; } } /// @dev when couldn't find any reward info, it means that timestamp exceed endblock /// so return 0 return 0; } /** * @notice in case of reward update, return reward diff and refund user if needed * @param _rewardIndex the number of the phase to update * @param _endBlock new endblock of the phase * @param _rewardPerBlock new rewardPerBlock of the phase * @param rewardInfo pointer on the array of rewardInfo in storage * @param campaign pointer on the campaign in storage * @param selectedRewardInfo pointer on the selectedRewardInfo in storage * @return refund_ boolean, true if user got refund * @return diff_ the reward difference */ function _updateRewardsDiff( uint256 _rewardIndex, uint256 _endBlock, uint256 _rewardPerBlock, RewardInfo[] storage rewardInfo, CampaignInfo storage campaign, RewardInfo storage selectedRewardInfo ) internal virtual returns (bool refund_, uint256 diff_) { uint256 _previousStartBlock = _rewardIndex == 0 ? campaign.startBlock : rewardInfo[_rewardIndex - 1].endBlock; uint256 _newStartBlock = block.number > _previousStartBlock ? block.number : _previousStartBlock; uint256 _previousBlockRange = selectedRewardInfo.endBlock - _previousStartBlock; uint256 _newBlockRange = _endBlock - _newStartBlock; uint256 _selectedRewardPerBlock = selectedRewardInfo.rewardPerBlock; uint256 _accumulatedRewards = (_newStartBlock - _previousStartBlock) * _selectedRewardPerBlock; uint256 _previousTotalRewards = _selectedRewardPerBlock * _previousBlockRange; uint256 _totalRewards = _rewardPerBlock * _newBlockRange; refund_ = _previousTotalRewards > _totalRewards + _accumulatedRewards; diff_ = refund_ ? _previousTotalRewards - _totalRewards - _accumulatedRewards : _totalRewards + _accumulatedRewards - _previousTotalRewards; if (refund_) { campaign.rewardToken.safeTransfer(rewardManager, diff_); } } /** * @notice transfer tokens from rewardManger to this contract. * @param _rewardToken to reward token to be transferred from the rewardManager to this contract * @param _amount qty to be transferred * @param _campaignID id of the campaign so the rewardManager can fetch the rewardToken address to transfer * * @dev in case of fail, not enough allowance is considered to be the reason, so we call resetAllowance(uint256) on * the reward manager (which will reset allowance to uint256.max) and we try again to transfer */ function _transferFromWithAllowance(IERC20 _rewardToken, uint256 _amount, uint256 _campaignID) internal { try this.attemptTransfer(_rewardToken, rewardManager, address(this), _amount) {} catch { rewardManager.call(abi.encodeWithSignature("resetAllowance(uint256)", _campaignID)); _rewardToken.safeTransferFrom(rewardManager, address(this), _amount); } } /** * @notice View function to retrieve pending Reward. * @param _campaignID pending reward of campaign id * @param _amount qty of staked token * @param _rewardDebt user info rewardDebt * @return pending rewards */ function _pendingReward( uint256 _campaignID, uint256 _amount, uint256 _rewardDebt ) internal view virtual returns (uint256) { CampaignInfo memory _campaign = campaignInfo[_campaignID]; RewardInfo[] memory _rewardInfo = campaignRewardInfo[_campaignID]; uint256 _accRewardPerShare = _campaign.accRewardPerShare; if (block.number > _campaign.lastRewardBlock && _campaign.totalStaked != 0) { uint256 _cursor = _campaign.lastRewardBlock; for (uint256 _i; _i != _rewardInfo.length; ) { uint256 _multiplier = getMultiplier(_cursor, block.number, _rewardInfo[_i].endBlock); if (_multiplier != 0) { _cursor = _rewardInfo[_i].endBlock; _accRewardPerShare = _accRewardPerShare + ((_multiplier * _rewardInfo[_i].rewardPerBlock * 1e20) / _campaign.totalStaked); } unchecked { ++_i; } } } return ((_amount * _accRewardPerShare) / 1e20) - _rewardDebt; } /** * @notice Update reward variables of the given campaign to be up-to-date. * NOTE: All rewards relating to periods devoid of any depositors are sent back to the reward manager. * @param _campaignID campaign id */ function _updateCampaign(uint256 _campaignID) internal virtual { require(campaignInfo.length > _campaignID, "FarmingRange::_updateCampaign::Campaign id not valid"); CampaignInfo storage campaign = campaignInfo[_campaignID]; RewardInfo[] memory _rewardInfo = campaignRewardInfo[_campaignID]; if (block.number <= campaign.lastRewardBlock) { return; } if (campaign.totalStaked == 0) { uint256 _amount; for (uint256 _i; _i != _rewardInfo.length; ) { if (_rewardInfo[_i].endBlock >= campaign.lastRewardBlock) { uint256 _startBlock = _i != 0 ? _rewardInfo[_i - 1].endBlock : campaign.lastRewardBlock; bool _lastRewardInfo = _rewardInfo[_i].endBlock > block.number; uint256 _blockRange = (_lastRewardInfo ? block.number : _rewardInfo[_i].endBlock) - (_startBlock > campaign.lastRewardBlock ? _startBlock : campaign.lastRewardBlock); _amount += _rewardInfo[_i].rewardPerBlock * _blockRange; if (_lastRewardInfo) { break; } } unchecked { ++_i; } } if (_amount != 0) { campaign.rewardToken.safeTransfer(rewardManager, _amount); } campaign.lastRewardBlock = block.number; return; } /// @dev for each reward info for (uint256 _i; _i != _rewardInfo.length; ) { // @dev get multiplier based on current Block and rewardInfo's end block // multiplier will be a range of either (current block - campaign.lastRewardBlock) // or (reward info's endblock - campaign.lastRewardBlock) or 0 uint256 _multiplier = getMultiplier(campaign.lastRewardBlock, block.number, _rewardInfo[_i].endBlock); if (_multiplier != 0) { // @dev if currentBlock exceed end block, use end block as the last reward block // so that for the next iteration, previous endBlock will be used as the last reward block if (block.number > _rewardInfo[_i].endBlock) { campaign.lastRewardBlock = _rewardInfo[_i].endBlock; } else { campaign.lastRewardBlock = block.number; } campaign.accRewardPerShare = campaign.accRewardPerShare + ((_multiplier * _rewardInfo[_i].rewardPerBlock * 1e20) / campaign.totalStaked); } unchecked { ++_i; } } } /** * @notice Withdraw staking token in a campaign. Also withdraw the current pending reward * @param _campaignID campaign id * @param _amount amount to withdraw */ function _withdraw(uint256 _campaignID, uint256 _amount) internal { CampaignInfo storage campaign = campaignInfo[_campaignID]; UserInfo storage user = userInfo[_campaignID][msg.sender]; require(user.amount >= _amount, "FarmingRange::withdraw::bad withdraw amount"); _updateCampaign(_campaignID); uint256 _pending = (user.amount * campaign.accRewardPerShare) / 1e20 - user.rewardDebt; if (_pending != 0) { campaign.rewardToken.safeTransfer(msg.sender, _pending); } if (_amount != 0) { user.amount = user.amount - _amount; campaign.totalStaked = campaign.totalStaked - _amount; campaign.stakingToken.safeTransfer(msg.sender, _amount); } user.rewardDebt = (user.amount * campaign.accRewardPerShare) / 1e20; emit Withdraw(msg.sender, _amount, _campaignID); } }
// SPDX-License-Identifier: MIT pragma solidity 0.8.17; // interfaces import "@openzeppelin/contracts/interfaces/IERC20.sol"; interface IFarmingRange { /** * @notice Info of each user. * @param amount How many Staking tokens the user has provided. * @param rewardDebt We do some fancy math here. Basically, any point in time, the amount of reward * entitled to a user but is pending to be distributed is: * * pending reward = (user.amount * pool.accRewardPerShare) - user.rewardDebt * * Whenever a user deposits or withdraws LP tokens to a pool. Here's what happens: * 1. The pool's `accRewardPerShare` (and `lastRewardBlock`) gets updated. * 2. User receives the pending reward sent to his/her address. * 3. User's `amount` gets updated. * 4. User's `rewardDebt` gets updated. * * from: https://github.com/jazz-defi/contracts/blob/master/MasterChefV2.sol */ struct UserInfo { uint256 amount; uint256 rewardDebt; } /** * @notice Info of each reward distribution campaign. * @param stakingToken address of Staking token contract. * @param rewardToken address of Reward token contract * @param startBlock start block of the campaign * @param lastRewardBlock last block number that Reward Token distribution occurs. * @param accRewardPerShare accumulated Reward Token per share, times 1e20. * @param totalStaked total staked amount each campaign's stake token, typically, * @param totalRewards total amount of reward to be distributed until the end of the last phase * * @dev each campaign has the same stake token, so no need to track it separetely */ struct CampaignInfo { IERC20 stakingToken; IERC20 rewardToken; uint256 startBlock; uint256 lastRewardBlock; uint256 accRewardPerShare; uint256 totalStaked; uint256 totalRewards; } /** * @notice Info about a reward-phase * @param endBlock block number of the end of the phase * @param rewardPerBlock amount of reward to be distributed per block in this phase */ struct RewardInfo { uint256 endBlock; uint256 rewardPerBlock; } /** * @notice emitted at each deposit * @param user address that deposit its funds * @param amount amount deposited * @param campaign campaingId on which the user has deposited funds */ event Deposit(address indexed user, uint256 amount, uint256 campaign); /** * @notice emitted at each withdraw * @param user address that withdrawn its funds * @param amount amount withdrawn * @param campaign campaingId on which the user has withdrawn funds */ event Withdraw(address indexed user, uint256 amount, uint256 campaign); /** * @notice emitted at each emergency withdraw * @param user address that emergency-withdrawn its funds * @param amount amount emergency-withdrawn * @param campaign campaingId on which the user has emergency-withdrawn funds */ event EmergencyWithdraw(address indexed user, uint256 amount, uint256 campaign); /** * @notice emitted at each campaign added * @param campaignID new campaign id * @param stakingToken token address to be staked in this campaign * @param rewardToken token address of the rewards in this campaign * @param startBlock starting block of this campaign */ event AddCampaignInfo(uint256 indexed campaignID, IERC20 stakingToken, IERC20 rewardToken, uint256 startBlock); /** * @notice emitted at each phase of reward added * @param campaignID campaign id on which rewards were added * @param phase number of the new phase added (latest at the moment of add) * @param endBlock number of the block that the phase stops (phase starts at the endblock of the previous phase's * endblock, and if it's the phase 0, it start at the startBlock of the campaign struct) * @param rewardPerBlock amount of reward distributed per block in this phase */ event AddRewardInfo(uint256 indexed campaignID, uint256 indexed phase, uint256 endBlock, uint256 rewardPerBlock); /** * @notice emitted when a reward phase is updated * @param campaignID campaign id on which the rewards-phase is updated * @param phase id of phase updated * @param endBlock new endblock of the phase * @param rewardPerBlock new rewardPerBlock of the phase */ event UpdateRewardInfo(uint256 indexed campaignID, uint256 indexed phase, uint256 endBlock, uint256 rewardPerBlock); /** * @notice emitted when a reward phase is removed * @param campaignID campaign id on which the rewards-phase is removed * @param phase id of phase removed (only the latest phase can be removed) */ event RemoveRewardInfo(uint256 indexed campaignID, uint256 indexed phase); /** * @notice emitted when the rewardInfoLimit is updated * @param rewardInfoLimit new max phase amount per campaign */ event SetRewardInfoLimit(uint256 rewardInfoLimit); /** * @notice set new reward info limit, defining how many phases are allowed * @param _updatedRewardInfoLimit new reward info limit */ function setRewardInfoLimit(uint256 _updatedRewardInfoLimit) external; /** * @notice reward campaign, one campaign represent a pair of staking and reward token, * last reward Block and acc reward Per Share * @param _stakingToken staking token address * @param _rewardToken reward token address * @param _startBlock block number when the campaign will start */ function addCampaignInfo(IERC20 _stakingToken, IERC20 _rewardToken, uint256 _startBlock) external; /** * @notice add a new reward info, when a new reward info is added, the reward * & its end block will be extended by the newly pushed reward info. * @param _campaignID id of the campaign * @param _endBlock end block of this reward info * @param _rewardPerBlock reward per block to distribute until the end */ function addRewardInfo(uint256 _campaignID, uint256 _endBlock, uint256 _rewardPerBlock) external; /** * @notice add multiple reward Info into a campaign in one tx. * @param _campaignID id of the campaign * @param _endBlock array of end blocks * @param _rewardPerBlock array of reward per block */ function addRewardInfoMultiple( uint256 _campaignID, uint256[] calldata _endBlock, uint256[] calldata _rewardPerBlock ) external; /** * @notice update one campaign reward info for a specified range index. * @param _campaignID id of the campaign * @param _rewardIndex index of the reward info * @param _endBlock end block of this reward info * @param _rewardPerBlock reward per block to distribute until the end */ function updateRewardInfo( uint256 _campaignID, uint256 _rewardIndex, uint256 _endBlock, uint256 _rewardPerBlock ) external; /** * @notice update multiple campaign rewards info for all range index. * @param _campaignID id of the campaign * @param _rewardIndex array of reward info index * @param _endBlock array of end block * @param _rewardPerBlock array of rewardPerBlock */ function updateRewardMultiple( uint256 _campaignID, uint256[] memory _rewardIndex, uint256[] memory _endBlock, uint256[] memory _rewardPerBlock ) external; /** * @notice update multiple campaigns and rewards info for all range index. * @param _campaignID array of campaign id * @param _rewardIndex multi dimensional array of reward info index * @param _endBlock multi dimensional array of end block * @param _rewardPerBlock multi dimensional array of rewardPerBlock */ function updateCampaignsRewards( uint256[] calldata _campaignID, uint256[][] calldata _rewardIndex, uint256[][] calldata _endBlock, uint256[][] calldata _rewardPerBlock ) external; /** * @notice remove last reward info for specified campaign. * @param _campaignID campaign id */ function removeLastRewardInfo(uint256 _campaignID) external; /** * @notice return the entries amount of reward info for one campaign. * @param _campaignID campaign id * @return reward info quantity */ function rewardInfoLen(uint256 _campaignID) external view returns (uint256); /** * @notice return the number of campaigns. * @return campaign quantity */ function campaignInfoLen() external view returns (uint256); /** * @notice return the end block of the current reward info for a given campaign. * @param _campaignID campaign id * @return reward info end block number */ function currentEndBlock(uint256 _campaignID) external view returns (uint256); /** * @notice return the reward per block of the current reward info for a given campaign. * @param _campaignID campaign id * @return current reward per block */ function currentRewardPerBlock(uint256 _campaignID) external view returns (uint256); /** * @notice Return reward multiplier over the given _from to _to block. * Reward multiplier is the amount of blocks between from and to * @param _from start block number * @param _to end block number * @param _endBlock end block number of the reward info * @return block distance */ function getMultiplier(uint256 _from, uint256 _to, uint256 _endBlock) external returns (uint256); /** * @notice View function to retrieve pending Reward. * @param _campaignID pending reward of campaign id * @param _user address to retrieve pending reward * @return current pending reward */ function pendingReward(uint256 _campaignID, address _user) external view returns (uint256); /** * @notice Update reward variables of the given campaign to be up-to-date. * @param _campaignID campaign id */ function updateCampaign(uint256 _campaignID) external; /** * @notice Update reward variables for all campaigns. gas spending is HIGH in this method call, BE CAREFUL. */ function massUpdateCampaigns() external; /** * @notice Deposit staking token in a campaign. * @param _campaignID campaign id * @param _amount amount to deposit */ function deposit(uint256 _campaignID, uint256 _amount) external; /** * @notice Deposit staking token in a campaign with the EIP-2612 signature off chain * @param _campaignID campaign id * @param _amount amount to deposit * @param _approveMax Whether or not the approval amount in the signature is for liquidity or uint(-1). * @param _deadline Unix timestamp after which the transaction will revert. * @param _v The v component of the permit signature. * @param _r The r component of the permit signature. * @param _s The s component of the permit signature. */ function depositWithPermit( uint256 _campaignID, uint256 _amount, bool _approveMax, uint256 _deadline, uint8 _v, bytes32 _r, bytes32 _s ) external; /** * @notice Withdraw staking token in a campaign. Also withdraw the current pending reward * @param _campaignID campaign id * @param _amount amount to withdraw */ function withdraw(uint256 _campaignID, uint256 _amount) external; /** * @notice Harvest campaigns, will claim rewards token of every campaign ids in the array * @param _campaignIDs array of campaign id */ function harvest(uint256[] calldata _campaignIDs) external; /** * @notice Withdraw without caring about rewards. EMERGENCY ONLY. * @param _campaignID campaign id */ function emergencyWithdraw(uint256 _campaignID) external; /** * @notice get Reward info for a campaign ID and index, that is a set of {endBlock, rewardPerBlock} * indexed by campaign ID * @param _campaignID campaign id * @param _rewardIndex index of the reward info * @return endBlock_ end block of this reward info * @return rewardPerBlock_ reward per block to distribute */ function campaignRewardInfo( uint256 _campaignID, uint256 _rewardIndex ) external view returns (uint256 endBlock_, uint256 rewardPerBlock_); /** * @notice get a Campaign Reward info for a campaign ID * @param _campaignID campaign id * @return all params from CampaignInfo struct */ function campaignInfo( uint256 _campaignID ) external view returns (IERC20, IERC20, uint256, uint256, uint256, uint256, uint256); /** * @notice get a User Reward info for a campaign ID and user address * @param _campaignID campaign id * @param _user user address * @return all params from UserInfo struct */ function userInfo(uint256 _campaignID, address _user) external view returns (uint256, uint256); /** * @notice how many reward phases can be set for a campaign * @return rewards phases size limit */ function rewardInfoLimit() external view returns (uint256); /** * @notice get reward Manager address holding rewards to distribute * @return address of reward manager */ function rewardManager() external view returns (address); }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity 0.8.17; // interfaces import "./IFarmingRange.sol"; interface IRewardManagerL2 { /** * @notice used to resetAllowance with farming contract to take rewards * @param _campaignId campaign id */ function resetAllowance(uint256 _campaignId) external; /** * @notice used to get the farming contract address * @return farming contract address (or FarmingRange contract type in Solidity) */ function farming() external view returns (IFarmingRange); }
{ "metadata": { "bytecodeHash": "none", "useLiteralContent": true }, "optimizer": { "enabled": true, "runs": 200 }, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } }, "libraries": {} }
Contract Security Audit
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Contract ABI
[{"inputs":[{"internalType":"address","name":"_farmingOwner","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[],"name":"farming","outputs":[{"internalType":"contract IFarmingRange","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_campaignId","type":"uint256"}],"name":"resetAllowance","outputs":[],"stateMutability":"nonpayable","type":"function"}]
Contract Creation Code
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Bytecode
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
Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
00000000000000000000000045c75bd8bb9cf5263539b914925eabbf0441eb14
-----Decoded View---------------
Arg [0] : _farmingOwner (address): 0x45C75bd8Bb9CF5263539b914925EabBF0441Eb14
-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 00000000000000000000000045c75bd8bb9cf5263539b914925eabbf0441eb14Loading...LoadingLoading...Loading
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Chain Token Portfolio % Price Amount Value [ Download: CSV Export ]A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.
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My Address - Private Name Tag or Note
My Name Tag:
Private Name Tags (up to 35 characters) can be used for easy identification of addressesPrivate Note:
A private note (up to 500 characters) can be attached to this address.
Please DO NOT store any passwords or private keys here.Compiler specific version warnings:
The compiled contract might be susceptible to VerbatimInvalidDeduplication (low-severity), FullInlinerNonExpressionSplitArgumentEvaluationOrder (low-severity), MissingSideEffectsOnSelectorAccess (low-severity) Solidity Compiler Bugs.
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Transaction Private Note
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