Contract

Contract Source Code (Solidity Standard Json-Input format)

IDE

• Blockscan IDE
• 🤖 Code ReaderBeta
• Remix IDE

More Options

• Similar
• Sol2Uml
• Submit Audit
• Compare

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import '@solidstate/contracts/token/ERC20/base/ERC20BaseInternal.sol';
import '@solidstate/contracts/utils/ReentrancyGuard.sol';

import './MagicWhitelistStorage.sol';

contract MagicMintReentrancyFix is ERC20BaseInternal, ReentrancyGuard {
    function mint(address account, uint256 amount) external nonReentrant {
        require(
            MagicWhitelistStorage.layout().whitelist[msg.sender],
            'Magic: sender must be whitelisted'
        );
        _mint(account, amount);
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import {IERC20Internal} from '../IERC20Internal.sol';
import {ERC20BaseStorage} from './ERC20BaseStorage.sol';

/**
 * @title Base ERC20 implementation, excluding optional extensions
 */
abstract contract ERC20BaseInternal is IERC20Internal {
  /**
   * @notice query the total minted token supply
   * @return token supply
   */
  function _totalSupply () virtual internal view returns (uint) {
    return ERC20BaseStorage.layout().totalSupply;
  }

  /**
   * @notice query the token balance of given account
   * @param account address to query
   * @return token balance
   */
  function _balanceOf (
    address account
  ) virtual internal view returns (uint) {
    return ERC20BaseStorage.layout().balances[account];
  }

  /**
   * @notice enable spender to spend tokens on behalf of holder
   * @param holder address on whose behalf tokens may be spent
   * @param spender recipient of allowance
   * @param amount quantity of tokens approved for spending
   */
  function _approve (
    address holder,
    address spender,
    uint amount
  ) virtual internal {
    require(holder != address(0), 'ERC20: approve from the zero address');
    require(spender != address(0), 'ERC20: approve to the zero address');

    ERC20BaseStorage.layout().allowances[holder][spender] = amount;

    emit Approval(holder, spender, amount);
  }

  /**
   * @notice mint tokens for given account
   * @param account recipient of minted tokens
   * @param amount quantity of tokens minted
   */
  function _mint (
    address account,
    uint amount
  ) virtual internal {
    require(account != address(0), 'ERC20: mint to the zero address');

    _beforeTokenTransfer(address(0), account, amount);

    ERC20BaseStorage.Layout storage l = ERC20BaseStorage.layout();
    l.totalSupply += amount;
    l.balances[account] += amount;

    emit Transfer(address(0), account, amount);
  }

  /**
   * @notice burn tokens held by given account
   * @param account holder of burned tokens
   * @param amount quantity of tokens burned
   */
  function _burn (
    address account,
    uint amount
  ) virtual internal {
    require(account != address(0), 'ERC20: burn from the zero address');

    _beforeTokenTransfer(account, address(0), amount);

    ERC20BaseStorage.Layout storage l = ERC20BaseStorage.layout();
    uint256 balance = l.balances[account];
    require(balance >= amount, "ERC20: burn amount exceeds balance");
    unchecked {
      l.balances[account] = balance - amount;
    }
    l.totalSupply -= amount;

    emit Transfer(account, address(0), amount);
  }

  /**
   * @notice transfer tokens from holder to recipient
   * @param holder owner of tokens to be transferred
   * @param recipient beneficiary of transfer
   * @param amount quantity of tokens transferred
   */
  function _transfer (
    address holder,
    address recipient,
    uint amount
  ) virtual internal {
    require(holder != address(0), 'ERC20: transfer from the zero address');
    require(recipient != address(0), 'ERC20: transfer to the zero address');

    _beforeTokenTransfer(holder, recipient, amount);

    ERC20BaseStorage.Layout storage l = ERC20BaseStorage.layout();
    uint256 holderBalance = l.balances[holder];
    require(holderBalance >= amount, 'ERC20: transfer amount exceeds balance');
    unchecked {
      l.balances[holder] = holderBalance - amount;
    }
    l.balances[recipient] += amount;

    emit Transfer(holder, recipient, amount);
  }

  /**
   * @notice ERC20 hook, called before all transfers including mint and burn
   * @dev function should be overridden and new implementation must call super
   * @param from sender of tokens
   * @param to receiver of tokens
   * @param amount quantity of tokens transferred
   */
  function _beforeTokenTransfer (
    address from,
    address to,
    uint amount
  ) virtual internal {}
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import {ReentrancyGuardStorage} from './ReentrancyGuardStorage.sol';

/**
 * @title Utility contract for preventing reentrancy attacks
 */
abstract contract ReentrancyGuard {
  modifier nonReentrant () {
    ReentrancyGuardStorage.Layout storage l = ReentrancyGuardStorage.layout();
    require(l.status != 2, 'ReentrancyGuard: reentrant call');
    l.status = 2;
    _;
    l.status = 1;
  }
}

// SPDX-License-Identifier: UNLICENSED

pragma solidity ^0.8.0;

library MagicWhitelistStorage {
    struct Layout {
        mapping(address => bool) whitelist;
    }

    bytes32 internal constant STORAGE_SLOT =
        keccak256('treasure.contracts.storage.MagicWhitelist');

    function layout() internal pure returns (Layout storage l) {
        bytes32 slot = STORAGE_SLOT;
        assembly {
            l.slot := slot
        }
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @title Partial ERC20 interface needed by internal functions
 */
interface IERC20Internal {
  event Transfer(
    address indexed from,
    address indexed to,
    uint256 value
  );

  event Approval(
    address indexed owner,
    address indexed spender,
    uint256 value
  );
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

library ERC20BaseStorage {
  struct Layout {
    mapping (address => uint) balances;
    mapping (address => mapping (address => uint)) allowances;
    uint totalSupply;
  }

  bytes32 internal constant STORAGE_SLOT = keccak256(
    'solidstate.contracts.storage.ERC20Base'
  );

  function layout () internal pure returns (Layout storage l) {
    bytes32 slot = STORAGE_SLOT;
    assembly { l.slot := slot }
  }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

library ReentrancyGuardStorage {
  struct Layout {
    uint status;
  }

  bytes32 internal constant STORAGE_SLOT = keccak256(
    'solidstate.contracts.storage.ReentrancyGuard'
  );

  function layout () internal pure returns (Layout storage l) {
    bytes32 slot = STORAGE_SLOT;
    assembly { l.slot := slot }
  }
}

{
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "abi"
      ]
    }
  },
  "libraries": {}
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"spender","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Transfer","type":"event"},{"inputs":[{"internalType":"address","name":"account","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"mint","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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