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Latest 25 from a total of 404 transactions
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Withdraw | 19945809 | 39 days ago | IN | 0 ETH | 0.00029694 | ||||
Withdraw | 19885261 | 47 days ago | IN | 0 ETH | 0.00031177 | ||||
Withdraw | 19816748 | 57 days ago | IN | 0 ETH | 0.00054464 | ||||
Withdraw | 19813244 | 58 days ago | IN | 0 ETH | 0.00043238 | ||||
Withdraw | 19812732 | 58 days ago | IN | 0 ETH | 0.0004399 | ||||
Withdraw | 19781011 | 62 days ago | IN | 0 ETH | 0.00032552 | ||||
Withdraw | 19780569 | 62 days ago | IN | 0 ETH | 0.0003521 | ||||
Withdraw | 19780465 | 62 days ago | IN | 0 ETH | 0.00038312 | ||||
Withdraw | 19776506 | 63 days ago | IN | 0 ETH | 0.00089012 | ||||
Withdraw | 19776115 | 63 days ago | IN | 0 ETH | 0.00088475 | ||||
Withdraw | 19775661 | 63 days ago | IN | 0 ETH | 0.00099809 | ||||
Withdraw | 19773742 | 63 days ago | IN | 0 ETH | 0.00148479 | ||||
Withdraw | 19767027 | 64 days ago | IN | 0 ETH | 0.00097804 | ||||
Deposit | 19764235 | 64 days ago | IN | 0 ETH | 0.0009791 | ||||
Deposit | 19764201 | 64 days ago | IN | 0 ETH | 0.00091787 | ||||
Withdraw | 19760261 | 65 days ago | IN | 0 ETH | 0.00098174 | ||||
Deposit | 19755456 | 66 days ago | IN | 0 ETH | 0.00078612 | ||||
Deposit | 19747727 | 67 days ago | IN | 0 ETH | 0.00093891 | ||||
Withdraw | 19745364 | 67 days ago | IN | 0 ETH | 0.00049716 | ||||
Withdraw | 19744825 | 67 days ago | IN | 0 ETH | 0.00061008 | ||||
Withdraw | 19734235 | 69 days ago | IN | 0 ETH | 0.0020445 | ||||
Withdraw | 19722818 | 70 days ago | IN | 0 ETH | 0.00099685 | ||||
Withdraw | 19698538 | 74 days ago | IN | 0 ETH | 0.00085557 | ||||
Deposit | 19687874 | 75 days ago | IN | 0 ETH | 0.00161294 | ||||
Withdraw | 19687774 | 75 days ago | IN | 0 ETH | 0.00129519 |
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Contract Name:
Farming
Compiler Version
v0.8.18+commit.87f61d96
Optimization Enabled:
Yes with 1000 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: MIT pragma solidity ^0.8.18; import "@openzeppelin/contracts/token/ERC20/IERC20.sol"; import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol"; import "@openzeppelin/contracts/access/Ownable.sol"; import "./interfaces/IFarming.sol"; contract Farming is Ownable, IFarming { using SafeERC20 for IERC20; // Info of each user. struct UserInfo { uint256 amount; // How many LP tokens the user has provided. uint256 rewardDebt; // Reward debt. See explanation below. // // We do some fancy math here. Basically, any point in time, the amount of ERC20s // entitled to a user but is pending to be distributed is: // // pending reward = (user.amount * pool.accERC20PerShare) - user.rewardDebt // // Whenever a user deposits or withdraws LP tokens to a pool. Here's what happens: // 1. The pool's `accERC20PerShare` (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. } // Info of each pool. struct PoolInfo { IERC20 lpToken; // Address of LP token contract. uint256 allocPoint; // How many allocation points assigned to this pool. ERC20s to distribute per block. uint256 lastRewardBlock; // Last block number that ERC20s distribution occurs. uint256 accERC20PerShare; // Accumulated ERC20s per share, times 1e36. } // Minimum number of blocks that needs to pass, from the deploy, in order to start distributing rewards // uint constant MINIMUM_BLOCKS_BEFORE_DISTRIBUTION = 216_000; // 30 days divided by 12 seconds (average Ethereum block time) uint constant MINIMUM_BLOCKS_BEFORE_DISTRIBUTION = 0; // Removed due to time constraints // Maximum number of blocks that needs to pass, from the deploy, in order to start distributing rewards uint constant MAXIMUM_BLOCKS_BEFORE_DISTRIBUTION = 1_296_000; // 180 days divided by 12 seconds (average Ethereum block time) // Address of the ERC20 Token contract. IERC20 public erc20; // The total amount of ERC20 that's paid out as reward. uint256 public paidOut; // ERC20 tokens rewarded per block. uint256 public rewardPerBlock; // Info of each pool. PoolInfo[] public poolInfo; // Info of each user that stakes LP tokens. mapping (uint256 => mapping (address => UserInfo)) public userInfo; // Total allocation points. Must be the sum of all allocation points in all pools. uint256 public totalAllocPoint; // The block number when farming starts. uint256 public startBlock; // The block number when farming ends. uint256 public endBlock; /** * @notice Constructor * @param _erc20 Address of the reward token * @param _rewardPerBlock Distributed rewards per block * @param _startBlock Block number from which users can farm */ constructor( IERC20 _erc20, uint256 _rewardPerBlock, uint256 _startBlock ) { require(_startBlock >= block.number + MINIMUM_BLOCKS_BEFORE_DISTRIBUTION && _startBlock <= block.number + MAXIMUM_BLOCKS_BEFORE_DISTRIBUTION, "constructor: invalid start block"); erc20 = _erc20; rewardPerBlock = _rewardPerBlock; startBlock = _startBlock; endBlock = _startBlock; } /** * @notice Returns the number of farming pools * @return pools Number of farming pools */ function poolLength() external view returns (uint256) { return poolInfo.length; } /** * @notice Fund the farming and extends the end block * @param _amount Amount of token to fund * @dev Caller must approve the transfer of token from its wallet to this contract before calling this function */ function fund( uint256 _amount ) public { require(block.number < endBlock, "fund: too late, the farm is closed"); require(_amount % rewardPerBlock == 0, "fund: invalid amount"); erc20.safeTransferFrom(address(msg.sender), address(this), _amount); endBlock += _amount / rewardPerBlock; } /** * @notice Create a farming pool * @param _allocPoint Allocation points of the pool. This pool will receive _allocPoint / totalAllocPoint of the reward per block * @param _lpToken Address of the LP token * @param _withUpdate If true, updates other farmimg pools * @dev Owner should withdraw before endBlock in order to not lose rewards * @dev DO NOT add the same LP token more than once. Rewards will be messed up if you do. */ function add( uint256 _allocPoint, IERC20 _lpToken, bool _withUpdate ) public onlyOwner { if (_withUpdate) { massUpdatePools(); } uint256 lastRewardBlock = block.number > startBlock ? block.number : startBlock; totalAllocPoint = totalAllocPoint + _allocPoint; poolInfo.push(PoolInfo({ lpToken: _lpToken, allocPoint: _allocPoint, lastRewardBlock: lastRewardBlock, accERC20PerShare: 0 })); // Deposit 1 wei in order to not lose rewards deposit(poolInfo.length - 1, 1 wei); } /** * @notice Update allocation points of a farming pool * @param _pid Pool id * @param _allocPoint Allocation points of the pool * @param _withUpdate If true, updates other farmimg pools */ function set( uint256 _pid, uint256 _allocPoint, bool _withUpdate ) public onlyOwner { if (_withUpdate) { massUpdatePools(); } totalAllocPoint = totalAllocPoint - poolInfo[_pid].allocPoint + _allocPoint; poolInfo[_pid].allocPoint = _allocPoint; } /** * @notice Returns the amount of deposited LPs for a user * @param _pid Pool id * @param _user Address of the user * @return deposited Deposited tokens of the user */ function deposited( uint256 _pid, address _user ) external view returns (uint256) { UserInfo storage user = userInfo[_pid][_user]; return user.amount; } /** * @notice Returns the pending rewards for a user * @param _pid Pool id * @param _user Address of the user * @return rewards Rewards of the user in the farming pool */ function pending( uint256 _pid, address _user ) external view returns (uint256) { PoolInfo storage pool = poolInfo[_pid]; UserInfo storage user = userInfo[_pid][_user]; uint256 accERC20PerShare = pool.accERC20PerShare; uint256 lpSupply = pool.lpToken.balanceOf(address(this)); uint256 lastBlock = block.number < endBlock ? block.number : endBlock; if (lastBlock > pool.lastRewardBlock && lpSupply != 0) { uint256 nrOfBlocks = lastBlock - pool.lastRewardBlock; uint256 erc20Reward = nrOfBlocks * rewardPerBlock * pool.allocPoint / totalAllocPoint; accERC20PerShare = accERC20PerShare + erc20Reward * 1e36 / lpSupply; } return user.amount * accERC20PerShare / 1e36 - user.rewardDebt; } /** * @notice Returns the total amount of pending rewards * @return totalRewards Total amount of pending rewards */ function totalPending() external view returns (uint256) { if (block.number <= startBlock) { return 0; } uint256 lastBlock = block.number < endBlock ? block.number : endBlock; return rewardPerBlock * (lastBlock - startBlock) - paidOut; } /** * @notice Updates reward variables for every farming pool * @dev Can be really expensive in gas */ function massUpdatePools() public { uint256 length = poolInfo.length; for (uint256 pid = 0; pid < length; ++pid) { updatePool(pid); } } /** * @notice Updates reward variables for a single farming pool * @param _pid Pool id */ function updatePool( uint256 _pid ) public { PoolInfo storage pool = poolInfo[_pid]; uint256 lastBlock = block.number < endBlock ? block.number : endBlock; if (lastBlock <= pool.lastRewardBlock) { return; } uint256 lpSupply = pool.lpToken.balanceOf(address(this)); if (lpSupply == 0) { pool.lastRewardBlock = lastBlock; return; } uint256 nrOfBlocks = lastBlock - pool.lastRewardBlock; uint256 erc20Reward = nrOfBlocks * rewardPerBlock * pool.allocPoint / totalAllocPoint; pool.accERC20PerShare = pool.accERC20PerShare + erc20Reward * 1e36 / lpSupply; pool.lastRewardBlock = block.number; } /** * @notice Deposit LP tokens in a farming pool * @param _pid Pool id * @param _amount Amount of LP tokens to deposit */ function deposit( uint256 _pid, uint256 _amount ) public { require(block.number <= endBlock, "deposit: cannot deposit after end block"); PoolInfo storage pool = poolInfo[_pid]; UserInfo storage user = userInfo[_pid][msg.sender]; updatePool(_pid); if (user.amount > 0) { uint256 pendingAmount = user.amount * pool.accERC20PerShare / 1e36 - user.rewardDebt; if (pendingAmount > 0) { erc20Transfer(msg.sender, pendingAmount); } } pool.lpToken.safeTransferFrom(address(msg.sender), address(this), _amount); user.amount = user.amount + _amount; user.rewardDebt = user.amount * pool.accERC20PerShare / 1e36; emit Deposit(msg.sender, _pid, _amount); } /** * @notice Withdraw tokens from a farming pool * @param _pid Pool id * @param _amount Amount of LP tokens to withdraw */ function withdraw( uint256 _pid, uint256 _amount ) public { PoolInfo storage pool = poolInfo[_pid]; UserInfo storage user = userInfo[_pid][msg.sender]; require(user.amount >= _amount, "withdraw: can't withdraw more than deposit"); updatePool(_pid); uint256 pendingAmount = user.amount * pool.accERC20PerShare / 1e36 - user.rewardDebt; if (pendingAmount > 0) { erc20Transfer(msg.sender, pendingAmount); } user.amount = user.amount - _amount; user.rewardDebt = user.amount * pool.accERC20PerShare / 1e36; pool.lpToken.safeTransfer(address(msg.sender), _amount); emit Withdraw(msg.sender, _pid, _amount); } /** * @notice Withdraw LP tokens from a farming pool ignoring rewards * @param _pid Pool id * @dev Emergency only */ function emergencyWithdraw( uint256 _pid ) public { PoolInfo storage pool = poolInfo[_pid]; UserInfo storage user = userInfo[_pid][msg.sender]; pool.lpToken.safeTransfer(address(msg.sender), user.amount); emit EmergencyWithdraw(msg.sender, _pid, user.amount); user.amount = 0; user.rewardDebt = 0; } // Transfer ERC20 and update the required ERC20 to payout all rewards function erc20Transfer( address _to, uint256 _amount ) internal { SafeERC20.safeTransfer(erc20, _to, _amount); paidOut += _amount; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (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 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 { _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 (token/ERC20/extensions/draft-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 v4.6.0) (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 v4.8.0) (token/ERC20/utils/SafeERC20.sol) pragma solidity ^0.8.0; import "../IERC20.sol"; import "../extensions/draft-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; 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' 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) + value; _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } 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"); uint256 newAllowance = oldAllowance - value; _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } } 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"); if (returndata.length > 0) { // Return data is optional require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed"); } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.8.0) (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 * ==== * * [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://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"); (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: MIT pragma solidity ^0.8.18; interface IFarming { event Deposit(address indexed _user, uint256 indexed _pid, uint256 _amount); event Withdraw(address indexed _user, uint256 indexed _pid, uint256 _amount); event EmergencyWithdraw(address indexed _user, uint256 indexed _pid, uint256 _amount); }
{ "optimizer": { "enabled": true, "runs": 1000 }, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } }, "libraries": {} }
Contract Security Audit
- No Contract Security Audit Submitted- Submit Audit Here
[{"inputs":[{"internalType":"contract IERC20","name":"_erc20","type":"address"},{"internalType":"uint256","name":"_rewardPerBlock","type":"uint256"},{"internalType":"uint256","name":"_startBlock","type":"uint256"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"_user","type":"address"},{"indexed":true,"internalType":"uint256","name":"_pid","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"Deposit","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"_user","type":"address"},{"indexed":true,"internalType":"uint256","name":"_pid","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"EmergencyWithdraw","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"_user","type":"address"},{"indexed":true,"internalType":"uint256","name":"_pid","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"Withdraw","type":"event"},{"inputs":[{"internalType":"uint256","name":"_allocPoint","type":"uint256"},{"internalType":"contract IERC20","name":"_lpToken","type":"address"},{"internalType":"bool","name":"_withUpdate","type":"bool"}],"name":"add","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_pid","type":"uint256"},{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"deposit","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_pid","type":"uint256"},{"internalType":"address","name":"_user","type":"address"}],"name":"deposited","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_pid","type":"uint256"}],"name":"emergencyWithdraw","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"endBlock","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"erc20","outputs":[{"internalType":"contract IERC20","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"fund","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"massUpdatePools","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"paidOut","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_pid","type":"uint256"},{"internalType":"address","name":"_user","type":"address"}],"name":"pending","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"poolInfo","outputs":[{"internalType":"contract IERC20","name":"lpToken","type":"address"},{"internalType":"uint256","name":"allocPoint","type":"uint256"},{"internalType":"uint256","name":"lastRewardBlock","type":"uint256"},{"internalType":"uint256","name":"accERC20PerShare","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"poolLength","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"rewardPerBlock","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_pid","type":"uint256"},{"internalType":"uint256","name":"_allocPoint","type":"uint256"},{"internalType":"bool","name":"_withUpdate","type":"bool"}],"name":"set","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"startBlock","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalAllocPoint","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalPending","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_pid","type":"uint256"}],"name":"updatePool","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"address","name":"","type":"address"}],"name":"userInfo","outputs":[{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"uint256","name":"rewardDebt","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_pid","type":"uint256"},{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"withdraw","outputs":[],"stateMutability":"nonpayable","type":"function"}]
Contract Creation Code
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Deployed Bytecode
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
000000000000000000000000f97e2a78f1f3d1fd438ff7cc3bb7de01e5945b830000000000000000000000000000000000000000000000007ce66c50e284000000000000000000000000000000000000000000000000000000000000011a2fa0
-----Decoded View---------------
Arg [0] : _erc20 (address): 0xf97e2A78f1f3D1fD438ff7cC3BB7De01E5945B83
Arg [1] : _rewardPerBlock (uint256): 9000000000000000000
Arg [2] : _startBlock (uint256): 18493344
-----Encoded View---------------
3 Constructor Arguments found :
Arg [0] : 000000000000000000000000f97e2a78f1f3d1fd438ff7cc3bb7de01e5945b83
Arg [1] : 0000000000000000000000000000000000000000000000007ce66c50e2840000
Arg [2] : 00000000000000000000000000000000000000000000000000000000011a2fa0
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Multichain Portfolio | 26 Chains
Chain | Token | Portfolio % | Price | Amount | Value |
---|---|---|---|---|---|
ETH | 100.00% | $0.004651 | 149,803.9376 | $696.67 |
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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.