/**
 * Source Code first verified at https://etherscan.io on Friday, March 30, 2018
 (UTC) */

pragma solidity 0.4.20;


/// @title Multisignature wallet - Allows multiple parties to agree on transactions before execution.
/// @author Stefan George - <[email protected]>
contract MultiSigWallet {

    /*
     *  Events
     */
    event Confirmation(address indexed sender, uint indexed transactionId);
    event Revocation(address indexed sender, uint indexed transactionId);
    event Submission(uint indexed transactionId);
    event Execution(uint indexed transactionId);
    event ExecutionFailure(uint indexed transactionId);
    event Deposit(address indexed sender, uint value);
    event OwnerAddition(address indexed owner);
    event OwnerRemoval(address indexed owner);
    event RequirementChange(uint required);

    /*
     *  Constants
     */
    uint constant public MAX_OWNER_COUNT = 50;

    /*
     *  Storage
     */
    mapping (uint => Transaction) public transactions;
    mapping (uint => mapping (address => bool)) public confirmations;
    mapping (address => bool) public isOwner;
    address[] public owners;
    uint public required;
    uint public transactionCount;

    struct Transaction {
        address destination;
        uint value;
        bytes data;
        bool executed;
    }

    /*
     *  Modifiers
     */
    modifier onlyWallet() {
        require(msg.sender == address(this));
        _;
    }

    modifier ownerDoesNotExist(address owner) {
        require(!isOwner[owner]);
        _;
    }

    modifier ownerExists(address owner) {
        require(isOwner[owner]);
        _;
    }

    modifier transactionExists(uint transactionId) {
        require(transactions[transactionId].destination != 0);
        _;
    }

    modifier confirmed(uint transactionId, address owner) {
        require(confirmations[transactionId][owner]);
        _;
    }

    modifier notConfirmed(uint transactionId, address owner) {
        require(!confirmations[transactionId][owner]);
        _;
    }

    modifier notExecuted(uint transactionId) {
        require(!transactions[transactionId].executed);
        _;
    }

    modifier notNull(address _address) {
        require(_address != 0);
        _;
    }

    modifier validRequirement(uint ownerCount, uint _required) {
        require(ownerCount <= MAX_OWNER_COUNT
            && _required <= ownerCount
            && _required != 0
            && ownerCount != 0);
        _;
    }

    /// @dev Fallback function allows to deposit ether.
    function()
        payable
    {
        if (msg.value > 0)
            Deposit(msg.sender, msg.value);
    }

    /*
     * Public functions
     */
    /// @dev Contract constructor sets initial owners and required number of confirmations.
    /// @param _owners List of initial owners.
    /// @param _required Number of required confirmations.
    function MultiSigWallet(address[] _owners, uint _required)
        public
        validRequirement(_owners.length, _required)
    {
        for (uint i=0; i<_owners.length; i++) {
            require(!isOwner[_owners[i]] && _owners[i] != 0);
            isOwner[_owners[i]] = true;
        }
        owners = _owners;
        required = _required;
    }

    /// @dev Allows to add a new owner. Transaction has to be sent by wallet.
    /// @param owner Address of new owner.
    function addOwner(address owner)
        public
        onlyWallet
        ownerDoesNotExist(owner)
        notNull(owner)
        validRequirement(owners.length + 1, required)
    {
        isOwner[owner] = true;
        owners.push(owner);
        OwnerAddition(owner);
    }

    /// @dev Allows to remove an owner. Transaction has to be sent by wallet.
    /// @param owner Address of owner.
    function removeOwner(address owner)
        public
        onlyWallet
        ownerExists(owner)
    {
        isOwner[owner] = false;
        for (uint i=0; i<owners.length - 1; i++)
            if (owners[i] == owner) {
                owners[i] = owners[owners.length - 1];
                break;
            }
        owners.length -= 1;
        if (required > owners.length)
            changeRequirement(owners.length);
        OwnerRemoval(owner);
    }

    /// @dev Allows to replace an owner with a new owner. Transaction has to be sent by wallet.
    /// @param owner Address of owner to be replaced.
    /// @param newOwner Address of new owner.
    function replaceOwner(address owner, address newOwner)
        public
        onlyWallet
        ownerExists(owner)
        ownerDoesNotExist(newOwner)
    {
        for (uint i=0; i<owners.length; i++)
            if (owners[i] == owner) {
                owners[i] = newOwner;
                break;
            }
        isOwner[owner] = false;
        isOwner[newOwner] = true;
        OwnerRemoval(owner);
        OwnerAddition(newOwner);
    }

    /// @dev Allows to change the number of required confirmations. Transaction has to be sent by wallet.
    /// @param _required Number of required confirmations.
    function changeRequirement(uint _required)
        public
        onlyWallet
        validRequirement(owners.length, _required)
    {
        required = _required;
        RequirementChange(_required);
    }

    /// @dev Allows an owner to submit and confirm a transaction.
    /// @param destination Transaction target address.
    /// @param value Transaction ether value.
    /// @param data Transaction data payload.
    /// @return Returns transaction ID.
    function submitTransaction(address destination, uint value, bytes data)
        public
        returns (uint transactionId)
    {
        transactionId = addTransaction(destination, value, data);
        confirmTransaction(transactionId);
    }

    /// @dev Allows an owner to confirm a transaction.
    /// @param transactionId Transaction ID.
    function confirmTransaction(uint transactionId)
        public
        ownerExists(msg.sender)
        transactionExists(transactionId)
        notConfirmed(transactionId, msg.sender)
    {
        confirmations[transactionId][msg.sender] = true;
        Confirmation(msg.sender, transactionId);
        executeTransaction(transactionId);
    }

    /// @dev Allows an owner to revoke a confirmation for a transaction.
    /// @param transactionId Transaction ID.
    function revokeConfirmation(uint transactionId)
        public
        ownerExists(msg.sender)
        confirmed(transactionId, msg.sender)
        notExecuted(transactionId)
    {
        confirmations[transactionId][msg.sender] = false;
        Revocation(msg.sender, transactionId);
    }

    /// @dev Allows anyone to execute a confirmed transaction.
    /// @param transactionId Transaction ID.
    function executeTransaction(uint transactionId)
        public
        ownerExists(msg.sender)
        confirmed(transactionId, msg.sender)
        notExecuted(transactionId)
    {
        if (isConfirmed(transactionId)) {
            Transaction storage txn = transactions[transactionId];
            txn.executed = true;
            if (txn.destination.call.value(txn.value)(txn.data))
                Execution(transactionId);
            else {
                ExecutionFailure(transactionId);
                txn.executed = false;
            }
        }
    }

    /// @dev Returns the confirmation status of a transaction.
    /// @param transactionId Transaction ID.
    /// @return Confirmation status.
    function isConfirmed(uint transactionId)
        public
        constant
        returns (bool)
    {
        uint count = 0;
        for (uint i=0; i<owners.length; i++) {
            if (confirmations[transactionId][owners[i]])
                count += 1;
            if (count == required)
                return true;
        }
    }

    /*
     * Internal functions
     */
    /// @dev Adds a new transaction to the transaction mapping, if transaction does not exist yet.
    /// @param destination Transaction target address.
    /// @param value Transaction ether value.
    /// @param data Transaction data payload.
    /// @return Returns transaction ID.
    function addTransaction(address destination, uint value, bytes data)
        internal
        notNull(destination)
        returns (uint transactionId)
    {
        transactionId = transactionCount;
        transactions[transactionId] = Transaction({
            destination: destination,
            value: value,
            data: data,
            executed: false
        });
        transactionCount += 1;
        Submission(transactionId);
    }

    /*
     * Web3 call functions
     */
    /// @dev Returns number of confirmations of a transaction.
    /// @param transactionId Transaction ID.
    /// @return Number of confirmations.
    function getConfirmationCount(uint transactionId)
        public
        constant
        returns (uint count)
    {
        for (uint i=0; i<owners.length; i++)
            if (confirmations[transactionId][owners[i]])
                count += 1;
    }

    /// @dev Returns total number of transactions after filers are applied.
    /// @param pending Include pending transactions.
    /// @param executed Include executed transactions.
    /// @return Total number of transactions after filters are applied.
    function getTransactionCount(bool pending, bool executed)
        public
        constant
        returns (uint count)
    {
        for (uint i=0; i<transactionCount; i++)
            if (   pending && !transactions[i].executed
                || executed && transactions[i].executed)
                count += 1;
    }

    /// @dev Returns list of owners.
    /// @return List of owner addresses.
    function getOwners()
        public
        constant
        returns (address[])
    {
        return owners;
    }

    /// @dev Returns array with owner addresses, which confirmed transaction.
    /// @param transactionId Transaction ID.
    /// @return Returns array of owner addresses.
    function getConfirmations(uint transactionId)
        public
        constant
        returns (address[] _confirmations)
    {
        address[] memory confirmationsTemp = new address[](owners.length);
        uint count = 0;
        uint i;
        for (i=0; i<owners.length; i++)
            if (confirmations[transactionId][owners[i]]) {
                confirmationsTemp[count] = owners[i];
                count += 1;
            }
        _confirmations = new address[](count);
        for (i=0; i<count; i++)
            _confirmations[i] = confirmationsTemp[i];
    }

    /// @dev Returns list of transaction IDs in defined range.
    /// @param from Index start position of transaction array.
    /// @param to Index end position of transaction array.
    /// @param pending Include pending transactions.
    /// @param executed Include executed transactions.
    /// @return Returns array of transaction IDs.
    function getTransactionIds(uint from, uint to, bool pending, bool executed)
        public
        constant
        returns (uint[] _transactionIds)
    {
        uint[] memory transactionIdsTemp = new uint[](transactionCount);
        uint count = 0;
        uint i;
        for (i=0; i<transactionCount; i++)
            if (   pending && !transactions[i].executed
                || executed && transactions[i].executed)
            {
                transactionIdsTemp[count] = i;
                count += 1;
            }
        _transactionIds = new uint[](to - from);
        for (i=from; i<to; i++)
            _transactionIds[i - from] = transactionIdsTemp[i];
    }
}


/// @title Multisignature wallet with daily limit - Allows an owner to withdraw a daily limit without multisig.
/// @author Stefan George - <[email protected]>
contract MultiSigWalletWithDailyLimit is MultiSigWallet {

    /*
     *  Events
     */
    event DailyLimitChange(uint dailyLimit);

    /*
     *  Storage
     */
    uint public dailyLimit;
    uint public lastDay;
    uint public spentToday;

    /*
     * Public functions
     */
    /// @dev Contract constructor sets initial owners, required number of confirmations and daily withdraw limit.
    /// @param _owners List of initial owners.
    /// @param _required Number of required confirmations.
    /// @param _dailyLimit Amount in wei, which can be withdrawn without confirmations on a daily basis.
    function MultiSigWalletWithDailyLimit(address[] _owners, uint _required, uint _dailyLimit)
        public
        MultiSigWallet(_owners, _required)
    {
        dailyLimit = _dailyLimit;
    }

    /// @dev Allows to change the daily limit. Transaction has to be sent by wallet.
    /// @param _dailyLimit Amount in wei.
    function changeDailyLimit(uint _dailyLimit)
        public
        onlyWallet
    {
        dailyLimit = _dailyLimit;
        DailyLimitChange(_dailyLimit);
    }

    /// @dev Allows anyone to execute a confirmed transaction or ether withdraws until daily limit is reached.
    /// @param transactionId Transaction ID.
    function executeTransaction(uint transactionId)
        public
        ownerExists(msg.sender)
        confirmed(transactionId, msg.sender)
        notExecuted(transactionId)
    {
        Transaction storage txn = transactions[transactionId];
        bool _confirmed = isConfirmed(transactionId);
        if (_confirmed || txn.data.length == 0 && isUnderLimit(txn.value)) {
            txn.executed = true;
            if (!_confirmed)
                spentToday += txn.value;
            if (txn.destination.call.value(txn.value)(txn.data))
                Execution(transactionId);
            else {
                ExecutionFailure(transactionId);
                txn.executed = false;
                if (!_confirmed)
                    spentToday -= txn.value;
            }
        }
    }

    /*
     * Internal functions
     */
    /// @dev Returns if amount is within daily limit and resets spentToday after one day.
    /// @param amount Amount to withdraw.
    /// @return Returns if amount is under daily limit.
    function isUnderLimit(uint amount)
        internal
        returns (bool)
    {
        if (now > lastDay + 24 hours) {
            lastDay = now;
            spentToday = 0;
        }
        if (spentToday + amount > dailyLimit || spentToday + amount < spentToday)
            return false;
        return true;
    }

    /*
     * Web3 call functions
     */
    /// @dev Returns maximum withdraw amount.
    /// @return Returns amount.
    function calcMaxWithdraw()
        public
        constant
        returns (uint)
    {
        if (now > lastDay + 24 hours)
            return dailyLimit;
        if (dailyLimit < spentToday)
            return 0;
        return dailyLimit - spentToday;
    }
}

[
  {
    "constant": true,
    "inputs": [
      {
        "name": "",
        "type": "uint256"
      }
    ],
    "name": "owners",
    "outputs": [
      {
        "name": "",
        "type": "address"
      }
    ],
    "payable": false,
    "stateMutability": "view",
    "type": "function",
    "signature": "0x025e7c27"
  },
  {
    "constant": false,
    "inputs": [
      {
        "name": "owner",
        "type": "address"
      }
    ],
    "name": "removeOwner",
    "outputs": [],
    "payable": false,
    "stateMutability": "nonpayable",
    "type": "function",
    "signature": "0x173825d9"
  },
  {
    "constant": false,
    "inputs": [
      {
        "name": "transactionId",
        "type": "uint256"
      }
    ],
    "name": "revokeConfirmation",
    "outputs": [],
    "payable": false,
    "stateMutability": "nonpayable",
    "type": "function",
    "signature": "0x20ea8d86"
  },
  {
    "constant": true,
    "inputs": [
      {
        "name": "",
        "type": "address"
      }
    ],
    "name": "isOwner",
    "outputs": [
      {
        "name": "",
        "type": "bool"
      }
    ],
    "payable": false,
    "stateMutability": "view",
    "type": "function",
    "signature": "0x2f54bf6e"
  },
  {
    "constant": true,
    "inputs": [
      {
        "name": "",
        "type": "uint256"
      },
      {
        "name": "",
        "type": "address"
      }
    ],
    "name": "confirmations",
    "outputs": [
      {
        "name": "",
        "type": "bool"
      }
    ],
    "payable": false,
    "stateMutability": "view",
    "type": "function",
    "signature": "0x3411c81c"
  },
  {
    "constant": true,
    "inputs": [],
    "name": "calcMaxWithdraw",
    "outputs": [
      {
        "name": "",
        "type": "uint256"
      }
    ],
    "payable": false,
    "stateMutability": "view",
    "type": "function",
    "signature": "0x4bc9fdc2"
  },
  {
    "constant": true,
    "inputs": [
      {
        "name": "pending",
        "type": "bool"
      },
      {
        "name": "executed",
        "type": "bool"
      }
    ],
    "name": "getTransactionCount",
    "outputs": [
      {
        "name": "count",
        "type": "uint256"
      }
    ],
    "payable": false,
    "stateMutability": "view",
    "type": "function",
    "signature": "0x54741525"
  },
  {
    "constant": true,
    "inputs": [],
    "name": "dailyLimit",
    "outputs": [
      {
        "name": "",
        "type": "uint256"
      }
    ],
    "payable": false,
    "stateMutability": "view",
    "type": "function",
    "signature": "0x67eeba0c"
  },
  {
    "constant": true,
    "inputs": [],
    "name": "lastDay",
    "outputs": [
      {
        "name": "",
        "type": "uint256"
      }
    ],
    "payable": false,
    "stateMutability": "view",
    "type": "function",
    "signature": "0x6b0c932d"
  },
  {
    "constant": false,
    "inputs": [
      {
        "name": "owner",
        "type": "address"
      }
    ],
    "name": "addOwner",
    "outputs": [],
    "payable": false,
    "stateMutability": "nonpayable",
    "type": "function",
    "signature": "0x7065cb48"
  },
  {
    "constant": true,
    "inputs": [
      {
        "name": "transactionId",
        "type": "uint256"
      }
    ],
    "name": "isConfirmed",
    "outputs": [
      {
        "name": "",
        "type": "bool"
      }
    ],
    "payable": false,
    "stateMutability": "view",
    "type": "function",
    "signature": "0x784547a7"
  },
  {
    "constant": true,
    "inputs": [
      {
        "name": "transactionId",
        "type": "uint256"
      }
    ],
    "name": "getConfirmationCount",
    "outputs": [
      {
        "name": "count",
        "type": "uint256"
      }
    ],
    "payable": false,
    "stateMutability": "view",
    "type": "function",
    "signature": "0x8b51d13f"
  },
  {
    "constant": true,
    "inputs": [
      {
        "name": "",
        "type": "uint256"
      }
    ],
    "name": "transactions",
    "outputs": [
      {
        "name": "destination",
        "type": "address"
      },
      {
        "name": "value",
        "type": "uint256"
      },
      {
        "name": "data",
        "type": "bytes"
      },
      {
        "name": "executed",
        "type": "bool"
      }
    ],
    "payable": false,
    "stateMutability": "view",
    "type": "function",
    "signature": "0x9ace38c2"
  },
  {
    "constant": true,
    "inputs": [],
    "name": "getOwners",
    "outputs": [
      {
        "name": "",
        "type": "address[]"
      }
    ],
    "payable": false,
    "stateMutability": "view",
    "type": "function",
    "signature": "0xa0e67e2b"
  },
  {
    "constant": true,
    "inputs": [
      {
        "name": "from",
        "type": "uint256"
      },
      {
        "name": "to",
        "type": "uint256"
      },
      {
        "name": "pending",
        "type": "bool"
      },
      {
        "name": "executed",
        "type": "bool"
      }
    ],
    "name": "getTransactionIds",
    "outputs": [
      {
        "name": "_transactionIds",
        "type": "uint256[]"
      }
    ],
    "payable": false,
    "stateMutability": "view",
    "type": "function",
    "signature": "0xa8abe69a"
  },
  {
    "constant": true,
    "inputs": [
      {
        "name": "transactionId",
        "type": "uint256"
      }
    ],
    "name": "getConfirmations",
    "outputs": [
      {
        "name": "_confirmations",
        "type": "address[]"
      }
    ],
    "payable": false,
    "stateMutability": "view",
    "type": "function",
    "signature": "0xb5dc40c3"
  },
  {
    "constant": true,
    "inputs": [],
    "name": "transactionCount",
    "outputs": [
      {
        "name": "",
        "type": "uint256"
      }
    ],
    "payable": false,
    "stateMutability": "view",
    "type": "function",
    "signature": "0xb77bf600"
  },
  {
    "constant": false,
    "inputs": [
      {
        "name": "_required",
        "type": "uint256"
      }
    ],
    "name": "changeRequirement",
    "outputs": [],
    "payable": false,
    "stateMutability": "nonpayable",
    "type": "function",
    "signature": "0xba51a6df"
  },
  {
    "constant": false,
    "inputs": [
      {
        "name": "transactionId",
        "type": "uint256"
      }
    ],
    "name": "confirmTransaction",
    "outputs": [],
    "payable": false,
    "stateMutability": "nonpayable",
    "type": "function",
    "signature": "0xc01a8c84"
  },
  {
    "constant": false,
    "inputs": [
      {
        "name": "destination",
        "type": "address"
      },
      {
        "name": "value",
        "type": "uint256"
      },
      {
        "name": "data",
        "type": "bytes"
      }
    ],
    "name": "submitTransaction",
    "outputs": [
      {
        "name": "transactionId",
        "type": "uint256"
      }
    ],
    "payable": false,
    "stateMutability": "nonpayable",
    "type": "function",
    "signature": "0xc6427474"
  },
  {
    "constant": false,
    "inputs": [
      {
        "name": "_dailyLimit",
        "type": "uint256"
      }
    ],
    "name": "changeDailyLimit",
    "outputs": [],
    "payable": false,
    "stateMutability": "nonpayable",
    "type": "function",
    "signature": "0xcea08621"
  },
  {
    "constant": true,
    "inputs": [],
    "name": "MAX_OWNER_COUNT",
    "outputs": [
      {
        "name": "",
        "type": "uint256"
      }
    ],
    "payable": false,
    "stateMutability": "view",
    "type": "function",
    "signature": "0xd74f8edd"
  },
  {
    "constant": true,
    "inputs": [],
    "name": "required",
    "outputs": [
      {
        "name": "",
        "type": "uint256"
      }
    ],
    "payable": false,
    "stateMutability": "view",
    "type": "function",
    "signature": "0xdc8452cd"
  },
  {
    "constant": false,
    "inputs": [
      {
        "name": "owner",
        "type": "address"
      },
      {
        "name": "newOwner",
        "type": "address"
      }
    ],
    "name": "replaceOwner",
    "outputs": [],
    "payable": false,
    "stateMutability": "nonpayable",
    "type": "function",
    "signature": "0xe20056e6"
  },
  {
    "constant": false,
    "inputs": [
      {
        "name": "transactionId",
        "type": "uint256"
      }
    ],
    "name": "executeTransaction",
    "outputs": [],
    "payable": false,
    "stateMutability": "nonpayable",
    "type": "function",
    "signature": "0xee22610b"
  },
  {
    "constant": true,
    "inputs": [],
    "name": "spentToday",
    "outputs": [
      {
        "name": "",
        "type": "uint256"
      }
    ],
    "payable": false,
    "stateMutability": "view",
    "type": "function",
    "signature": "0xf059cf2b"
  },
  {
    "inputs": [
      {
        "name": "_owners",
        "type": "address[]"
      },
      {
        "name": "_required",
        "type": "uint256"
      },
      {
        "name": "_dailyLimit",
        "type": "uint256"
      }
    ],
    "payable": false,
    "stateMutability": "nonpayable",
    "type": "constructor"
  },
  {
    "payable": true,
    "stateMutability": "payable",
    "type": "fallback"
  },
  {
    "anonymous": false,
    "inputs": [
      {
        "indexed": false,
        "name": "dailyLimit",
        "type": "uint256"
      }
    ],
    "name": "DailyLimitChange",
    "type": "event",
    "signature": "0xc71bdc6afaf9b1aa90a7078191d4fc1adf3bf680fca3183697df6b0dc226bca2"
  },
  {
    "anonymous": false,
    "inputs": [
      {
        "indexed": true,
        "name": "sender",
        "type": "address"
      },
      {
        "indexed": true,
        "name": "transactionId",
        "type": "uint256"
      }
    ],
    "name": "Confirmation",
    "type": "event",
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Transaction 0xa43370de09e48bf931f82d6e1466a2079f2d633003ec5640499e1888d158580a on the 2018-03-31T07:13:13+00:00 (2 years ago).