// SPDX-License-Identifier: MIT

pragma solidity 0.8.29;

/**
 * @title An Ether or token balance scanner
 * @author Maarten Zuidhoorn
 * @author Luit Hollander
 */
contract BalanceScanner {
    struct Result {
        bool success;
        bytes data;
    }

    /**
     * @notice Get the Ether balance for all addresses specified
     * @param addresses The addresses to get the Ether balance for
     * @return results The Ether balance for all addresses in the same order as specified
     */
    function etherBalances(address[] calldata addresses) external view returns (Result[] memory results) {
        results = new Result[](addresses.length);

        for (uint256 i = 0; i < addresses.length; i++) {
            results[i] = Result(true, abi.encode(addresses[i].balance));
        }
    }

    /**
     * @notice Get the ERC-20 token balance of `token` for all addresses specified
     * @dev This does not check if the `token` address specified is actually an ERC-20 token
     * @param addresses The addresses to get the token balance for
     * @param token The address of the ERC-20 token contract
     * @return results The token balance for all addresses in the same order as specified
     */
    function tokenBalances(address[] calldata addresses, address token)
        external
        view
        returns (Result[] memory results)
    {
        results = new Result[](addresses.length);

        for (uint256 i = 0; i < addresses.length; i++) {
            bytes memory data = abi.encodeWithSignature("balanceOf(address)", addresses[i]);
            results[i] = staticCall(token, data, 20000);
        }
    }

    /**
     * @notice Get the ERC-20 token balance from multiple contracts for a single owner
     * @param owner The address of the token owner
     * @param contracts The addresses of the ERC-20 token contracts
     * @return results The token balances in the same order as the addresses specified
     */
    function tokensBalance(address owner, address[] calldata contracts)
        external
        view
        returns (Result[] memory results)
    {
        results = new Result[](contracts.length);

        bytes memory data = abi.encodeWithSignature("balanceOf(address)", owner);
        for (uint256 i = 0; i < contracts.length; i++) {
            results[i] = staticCall(contracts[i], data, 20000);
        }
    }

    /**
     * @notice Call multiple contracts with the provided arbitrary data
     * @param contracts The contracts to call
     * @param data The data to call the contracts with
     * @return results The raw result of the contract calls
     */
    function call(address[] calldata contracts, bytes[] calldata data)
        external
        view
        returns (Result[] memory results)
    {
        return call(contracts, data, gasleft());
    }

    /**
     * @notice Call multiple contracts with the provided arbitrary data
     * @param contracts The contracts to call
     * @param data The data to call the contracts with
     * @param gas The amount of gas to call the contracts with
     * @return results The raw result of the contract calls
     */
    function call(address[] calldata contracts, bytes[] calldata data, uint256 gas)
        public
        view
        returns (Result[] memory results)
    {
        require(contracts.length == data.length, "Length must be equal");
        results = new Result[](contracts.length);

        for (uint256 i = 0; i < contracts.length; i++) {
            results[i] = staticCall(contracts[i], data[i], gas);
        }
    }

    /**
     * @notice Static call a contract with the provided data
     * @param target The address of the contract to call
     * @param data The data to call the contract with
     * @param gas The amount of gas to forward to the call
     * @return result The result of the contract call
     */
    function staticCall(address target, bytes memory data, uint256 gas) private view returns (Result memory) {
        uint256 size = codeSize(target);

        if (size > 0) {
            (bool success, bytes memory result) = target.staticcall{gas: gas}(data);
            if (success) {
                return Result(success, result);
            }
        }

        return Result(false, "");
    }

    /**
     * @notice Get code size of address
     * @param _address The address to get code size from
     * @return size Unsigned 256-bits integer
     */
    function codeSize(address _address) private view returns (uint256 size) {
        // solhint-disable-next-line no-inline-assembly
        assembly {
            size := extcodesize(_address)
        }
    }
}

{
  "remappings": [
    "forge-std/=lib/forge-std/src/"
  ],
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "metadata": {
    "useLiteralContent": false,
    "bytecodeHash": "ipfs",
    "appendCBOR": true
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "evmVersion": "shanghai",
  "viaIR": false
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[{"internalType":"address[]","name":"contracts","type":"address[]"},{"internalType":"bytes[]","name":"data","type":"bytes[]"},{"internalType":"uint256","name":"gas","type":"uint256"}],"name":"call","outputs":[{"components":[{"internalType":"bool","name":"success","type":"bool"},{"internalType":"bytes","name":"data","type":"bytes"}],"internalType":"struct BalanceScanner.Result[]","name":"results","type":"tuple[]"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address[]","name":"contracts","type":"address[]"},{"internalType":"bytes[]","name":"data","type":"bytes[]"}],"name":"call","outputs":[{"components":[{"internalType":"bool","name":"success","type":"bool"},{"internalType":"bytes","name":"data","type":"bytes"}],"internalType":"struct BalanceScanner.Result[]","name":"results","type":"tuple[]"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address[]","name":"addresses","type":"address[]"}],"name":"etherBalances","outputs":[{"components":[{"internalType":"bool","name":"success","type":"bool"},{"internalType":"bytes","name":"data","type":"bytes"}],"internalType":"struct BalanceScanner.Result[]","name":"results","type":"tuple[]"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address[]","name":"addresses","type":"address[]"},{"internalType":"address","name":"token","type":"address"}],"name":"tokenBalances","outputs":[{"components":[{"internalType":"bool","name":"success","type":"bool"},{"internalType":"bytes","name":"data","type":"bytes"}],"internalType":"struct BalanceScanner.Result[]","name":"results","type":"tuple[]"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address[]","name":"contracts","type":"address[]"}],"name":"tokensBalance","outputs":[{"components":[{"internalType":"bool","name":"success","type":"bool"},{"internalType":"bytes","name":"data","type":"bytes"}],"internalType":"struct BalanceScanner.Result[]","name":"results","type":"tuple[]"}],"stateMutability":"view","type":"function"}]

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