pragma solidity ^0.4.11;

// ----------------------------------------------------------------------------
// Dao.Casino Crowdsale Token Contract (Under Consideration)
//
// Enjoy. (c) BokkyPooBah / Bok Consulting Pty Ltd 2017
// The MIT Licence (Under Consideration).
// ----------------------------------------------------------------------------


// ----------------------------------------------------------------------------
// Safe maths, borrowed from OpenZeppelin
// ----------------------------------------------------------------------------
library SafeMath {

    // ------------------------------------------------------------------------
    // Add a number to another number, checking for overflows
    // ------------------------------------------------------------------------
    function add(uint a, uint b) internal returns (uint) {
        uint c = a + b;
        assert(c >= a && c >= b);
        return c;
    }

    // ------------------------------------------------------------------------
    // Subtract a number from another number, checking for underflows
    // ------------------------------------------------------------------------
    function sub(uint a, uint b) internal returns (uint) {
        assert(b <= a);
        return a - b;
    }
}


// ----------------------------------------------------------------------------
// Owned contract
// ----------------------------------------------------------------------------
contract Owned {
    address public owner;
    address public newOwner;
    event OwnershipTransferred(address indexed _from, address indexed _to);

    function Owned() {
        owner = msg.sender;
    }

    modifier onlyOwner {
        if (msg.sender != owner) throw;
        _;
    }

    function transferOwnership(address _newOwner) onlyOwner {
        newOwner = _newOwner;
    }
 
    function acceptOwnership() {
        if (msg.sender == newOwner) {
            OwnershipTransferred(owner, newOwner);
            owner = newOwner;
        }
    }
}


// ----------------------------------------------------------------------------
// ERC20 Token, with the addition of symbol, name and decimals
// https://github.com/ethereum/EIPs/issues/20
// ----------------------------------------------------------------------------
contract ERC20Token is Owned {
    using SafeMath for uint;

    // ------------------------------------------------------------------------
    // Total Supply
    // ------------------------------------------------------------------------
    uint256 _totalSupply = 0;

    // ------------------------------------------------------------------------
    // Balances for each account
    // ------------------------------------------------------------------------
    mapping(address => uint256) balances;

    // ------------------------------------------------------------------------
    // Owner of account approves the transfer of an amount to another account
    // ------------------------------------------------------------------------
    mapping(address => mapping (address => uint256)) allowed;

    // ------------------------------------------------------------------------
    // Get the total token supply
    // ------------------------------------------------------------------------
    function totalSupply() constant returns (uint256 totalSupply) {
        totalSupply = _totalSupply;
    }

    // ------------------------------------------------------------------------
    // Get the account balance of another account with address _owner
    // ------------------------------------------------------------------------
    function balanceOf(address _owner) constant returns (uint256 balance) {
        return balances[_owner];
    }

    // ------------------------------------------------------------------------
    // Transfer the balance from owner's account to another account
    // ------------------------------------------------------------------------
    function transfer(address _to, uint256 _amount) returns (bool success) {
        if (balances[msg.sender] >= _amount                // User has balance
            && _amount > 0                                 // Non-zero transfer
            && balances[_to] + _amount > balances[_to]     // Overflow check
        ) {
            balances[msg.sender] = balances[msg.sender].sub(_amount);
            balances[_to] = balances[_to].add(_amount);
            Transfer(msg.sender, _to, _amount);
            return true;
        } else {
            return false;
        }
    }

    // ------------------------------------------------------------------------
    // Allow _spender to withdraw from your account, multiple times, up to the
    // _value amount. If this function is called again it overwrites the
    // current allowance with _value.
    // ------------------------------------------------------------------------
    function approve(
        address _spender,
        uint256 _amount
    ) returns (bool success) {
        allowed[msg.sender][_spender] = _amount;
        Approval(msg.sender, _spender, _amount);
        return true;
    }

    // ------------------------------------------------------------------------
    // Spender of tokens transfer an amount of tokens from the token owner's
    // balance to the spender's account. The owner of the tokens must already
    // have approve(...)-d this transfer
    // ------------------------------------------------------------------------
    function transferFrom(
        address _from,
        address _to,
        uint256 _amount
    ) returns (bool success) {
        if (balances[_from] >= _amount                  // From a/c has balance
            && allowed[_from][msg.sender] >= _amount    // Transfer approved
            && _amount > 0                              // Non-zero transfer
            && balances[_to] + _amount > balances[_to]  // Overflow check
        ) {
            balances[_from] = balances[_from].sub(_amount);
            allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_amount);
            balances[_to] = balances[_to].add(_amount);
            Transfer(_from, _to, _amount);
            return true;
        } else {
            return false;
        }
    }

    // ------------------------------------------------------------------------
    // Returns the amount of tokens approved by the owner that can be
    // transferred to the spender's account
    // ------------------------------------------------------------------------
    function allowance(
        address _owner, 
        address _spender
    ) constant returns (uint256 remaining) {
        return allowed[_owner][_spender];
    }

    event Transfer(address indexed _from, address indexed _to, uint256 _value);
    event Approval(address indexed _owner, address indexed _spender,
        uint256 _value);
}


contract DaoCasinoToken is ERC20Token {

    // ------------------------------------------------------------------------
    // Token information
    // ------------------------------------------------------------------------
    string public constant symbol = "BET";
    string public constant name = "Dao.Casino";
    uint8 public constant decimals = 18;

    // Do not use `now` here
    uint256 public STARTDATE;
    uint256 public ENDDATE;

    // Cap USD 25mil @ 296.1470 ETH/USD
    uint256 public CAP;

    // Cannot have a constant address here - Solidity bug
    // https://github.com/ethereum/solidity/issues/2441
    address public multisig;

    function DaoCasinoToken(uint256 _start, uint256 _end, uint256 _cap, address _multisig) {
        STARTDATE = _start;
        ENDDATE   = _end;
        CAP       = _cap;
        multisig  = _multisig;
    }

    // > new Date("2017-06-29T13:00:00").getTime()/1000
    // 1498741200

    uint256 public totalEthers;

    // ------------------------------------------------------------------------
    // Tokens per ETH
    // Day  1    : 2,000 BET = 1 Ether
    // Days 2–14 : 1,800 BET = 1 Ether
    // Days 15–17: 1,700 BET = 1 Ether
    // Days 18–20: 1,600 BET = 1 Ether
    // Days 21–23: 1,500 BET = 1 Ether
    // Days 24–26: 1,400 BET = 1 Ether
    // Days 27–28: 1,300 BET = 1 Ether
    // ------------------------------------------------------------------------
    function buyPrice() constant returns (uint256) {
        return buyPriceAt(now);
    }

    function buyPriceAt(uint256 at) constant returns (uint256) {
        if (at < STARTDATE) {
            return 0;
        } else if (at < (STARTDATE + 1 days)) {
            return 2000;
        } else if (at < (STARTDATE + 15 days)) {
            return 1800;
        } else if (at < (STARTDATE + 18 days)) {
            return 1700;
        } else if (at < (STARTDATE + 21 days)) {
            return 1600;
        } else if (at < (STARTDATE + 24 days)) {
            return 1500;
        } else if (at < (STARTDATE + 27 days)) {
            return 1400;
        } else if (at <= ENDDATE) {
            return 1300;
        } else {
            return 0;
        }
    }


    // ------------------------------------------------------------------------
    // Buy tokens from the contract
    // ------------------------------------------------------------------------
    function () payable {
        proxyPayment(msg.sender);
    }


    // ------------------------------------------------------------------------
    // Exchanges can buy on behalf of participant
    // ------------------------------------------------------------------------
    function proxyPayment(address participant) payable {
        // No contributions before the start of the crowdsale
        require(now >= STARTDATE);
        // No contributions after the end of the crowdsale
        require(now <= ENDDATE);
        // No 0 contributions
        require(msg.value > 0);

        // Add ETH raised to total
        totalEthers = totalEthers.add(msg.value);
        // Cannot exceed cap
        require(totalEthers <= CAP);

        // What is the BET to ETH rate
        uint256 _buyPrice = buyPrice();

        // Calculate #BET - this is safe as _buyPrice is known
        // and msg.value is restricted to valid values
        uint tokens = msg.value * _buyPrice;

        // Check tokens > 0
        require(tokens > 0);
        // Compute tokens for foundation 30%
        // Number of tokens restricted so maths is safe
        uint multisigTokens = tokens * 3 / 7;

        // Add to total supply
        _totalSupply = _totalSupply.add(tokens);
        _totalSupply = _totalSupply.add(multisigTokens);

        // Add to balances
        balances[participant] = balances[participant].add(tokens);
        balances[multisig] = balances[multisig].add(multisigTokens);

        // Log events
        TokensBought(participant, msg.value, totalEthers, tokens,
            multisigTokens, _totalSupply, _buyPrice);
        Transfer(0x0, participant, tokens);
        Transfer(0x0, multisig, multisigTokens);

        // Move the funds to a safe wallet
        multisig.transfer(msg.value);
    }
    event TokensBought(address indexed buyer, uint256 ethers, 
        uint256 newEtherBalance, uint256 tokens, uint256 multisigTokens, 
        uint256 newTotalSupply, uint256 buyPrice);


    // ------------------------------------------------------------------------
    // Owner to add precommitment funding token balance before the crowdsale
    // commences
    // ------------------------------------------------------------------------
    function addPrecommitment(address participant, uint balance) onlyOwner {
        require(now < STARTDATE);
        require(balance > 0);
        balances[participant] = balances[participant].add(balance);
        _totalSupply = _totalSupply.add(balance);
        Transfer(0x0, participant, balance);
    }


    // ------------------------------------------------------------------------
    // Transfer the balance from owner's account to another account, with a
    // check that the crowdsale is finalised
    // ------------------------------------------------------------------------
    function transfer(address _to, uint _amount) returns (bool success) {
        // Cannot transfer before crowdsale ends or cap reached
        require(now > ENDDATE || totalEthers == CAP);
        // Standard transfer
        return super.transfer(_to, _amount);
    }


    // ------------------------------------------------------------------------
    // Spender of tokens transfer an amount of tokens from the token owner's
    // balance to another account, with a check that the crowdsale is
    // finalised
    // ------------------------------------------------------------------------
    function transferFrom(address _from, address _to, uint _amount) 
        returns (bool success)
    {
        // Cannot transfer before crowdsale ends or cap reached
        require(now > ENDDATE || totalEthers == CAP);
        // Standard transferFrom
        return super.transferFrom(_from, _to, _amount);
    }


    // ------------------------------------------------------------------------
    // Owner can transfer out any accidentally sent ERC20 tokens
    // ------------------------------------------------------------------------
    function transferAnyERC20Token(address tokenAddress, uint amount)
      onlyOwner returns (bool success) 
    {
        return ERC20Token(tokenAddress).transfer(owner, amount);
    }
}

//sol Wallet
// Multi-sig, daily-limited account proxy/wallet.
// @authors:
// Gav Wood <[email protected]>
// inheritable "property" contract that enables methods to be protected by requiring the acquiescence of either a
// single, or, crucially, each of a number of, designated owners.
// usage:
// use modifiers onlyowner (just own owned) or onlymanyowners(hash), whereby the same hash must be provided by
// some number (specified in constructor) of the set of owners (specified in the constructor, modifiable) before the
// interior is executed.

pragma solidity ^0.4.9;

contract WalletEvents {
  // EVENTS

  // this contract only has six types of events: it can accept a confirmation, in which case
  // we record owner and operation (hash) alongside it.
  event Confirmation(address owner, bytes32 operation);
  event Revoke(address owner, bytes32 operation);

  // some others are in the case of an owner changing.
  event OwnerChanged(address oldOwner, address newOwner);
  event OwnerAdded(address newOwner);
  event OwnerRemoved(address oldOwner);

  // the last one is emitted if the required signatures change
  event RequirementChanged(uint newRequirement);

  // Funds has arrived into the wallet (record how much).
  event Deposit(address _from, uint value);
  // Single transaction going out of the wallet (record who signed for it, how much, and to whom it's going).
  event SingleTransact(address owner, uint value, address to, bytes data, address created);
  // Multi-sig transaction going out of the wallet (record who signed for it last, the operation hash, how much, and to whom it's going).
  event MultiTransact(address owner, bytes32 operation, uint value, address to, bytes data, address created);
  // Confirmation still needed for a transaction.
  event ConfirmationNeeded(bytes32 operation, address initiator, uint value, address to, bytes data);
}

contract WalletAbi {
  // Revokes a prior confirmation of the given operation
  function revoke(bytes32 _operation) external;

  // Replaces an owner `_from` with another `_to`.
  function changeOwner(address _from, address _to) external;

  function addOwner(address _owner) external;

  function removeOwner(address _owner) external;

  function changeRequirement(uint _newRequired) external;

  function isOwner(address _addr) constant returns (bool);

  function hasConfirmed(bytes32 _operation, address _owner) external constant returns (bool);

  // (re)sets the daily limit. needs many of the owners to confirm. doesn't alter the amount already spent today.
  function setDailyLimit(uint _newLimit) external;

  function execute(address _to, uint _value, bytes _data) external returns (bytes32 o_hash);
  function confirm(bytes32 _h) returns (bool o_success);
}

contract WalletLibrary is WalletEvents {
  // TYPES

  // struct for the status of a pending operation.
  struct PendingState {
    uint yetNeeded;
    uint ownersDone;
    uint index;
  }

  // Transaction structure to remember details of transaction lest it need be saved for a later call.
  struct Transaction {
    address to;
    uint value;
    bytes data;
  }

  // MODIFIERS

  // simple single-sig function modifier.
  modifier onlyowner {
    if (isOwner(msg.sender))
      _;
  }
  // multi-sig function modifier: the operation must have an intrinsic hash in order
  // that later attempts can be realised as the same underlying operation and
  // thus count as confirmations.
  modifier onlymanyowners(bytes32 _operation) {
    if (confirmAndCheck(_operation))
      _;
  }

  // METHODS

  // gets called when no other function matches
  function() payable {
    // just being sent some cash?
    if (msg.value > 0)
      Deposit(msg.sender, msg.value);
  }

  // constructor is given number of sigs required to do protected "onlymanyowners" transactions
  // as well as the selection of addresses capable of confirming them.
  function initMultiowned(address[] _owners, uint _required) {
    m_numOwners = _owners.length + 1;
    m_owners[1] = uint(msg.sender);
    m_ownerIndex[uint(msg.sender)] = 1;
    for (uint i = 0; i < _owners.length; ++i)
    {
      m_owners[2 + i] = uint(_owners[i]);
      m_ownerIndex[uint(_owners[i])] = 2 + i;
    }
    m_required = _required;
  }

  // Revokes a prior confirmation of the given operation
  function revoke(bytes32 _operation) external {
    uint ownerIndex = m_ownerIndex[uint(msg.sender)];
    // make sure they're an owner
    if (ownerIndex == 0) return;
    uint ownerIndexBit = 2**ownerIndex;
    var pending = m_pending[_operation];
    if (pending.ownersDone & ownerIndexBit > 0) {
      pending.yetNeeded++;
      pending.ownersDone -= ownerIndexBit;
      Revoke(msg.sender, _operation);
    }
  }

  // Replaces an owner `_from` with another `_to`.
  function changeOwner(address _from, address _to) onlymanyowners(sha3(msg.data)) external {
    if (isOwner(_to)) return;
    uint ownerIndex = m_ownerIndex[uint(_from)];
    if (ownerIndex == 0) return;

    clearPending();
    m_owners[ownerIndex] = uint(_to);
    m_ownerIndex[uint(_from)] = 0;
    m_ownerIndex[uint(_to)] = ownerIndex;
    OwnerChanged(_from, _to);
  }

  function addOwner(address _owner) onlymanyowners(sha3(msg.data)) external {
    if (isOwner(_owner)) return;

    clearPending();
    if (m_numOwners >= c_maxOwners)
      reorganizeOwners();
    if (m_numOwners >= c_maxOwners)
      return;
    m_numOwners++;
    m_owners[m_numOwners] = uint(_owner);
    m_ownerIndex[uint(_owner)] = m_numOwners;
    OwnerAdded(_owner);
  }

  function removeOwner(address _owner) onlymanyowners(sha3(msg.data)) external {
    uint ownerIndex = m_ownerIndex[uint(_owner)];
    if (ownerIndex == 0) return;
    if (m_required > m_numOwners - 1) return;

    m_owners[ownerIndex] = 0;
    m_ownerIndex[uint(_owner)] = 0;
    clearPending();
    reorganizeOwners(); //make sure m_numOwner is equal to the number of owners and always points to the optimal free slot
    OwnerRemoved(_owner);
  }

  function changeRequirement(uint _newRequired) onlymanyowners(sha3(msg.data)) external {
    if (_newRequired > m_numOwners) return;
    m_required = _newRequired;
    clearPending();
    RequirementChanged(_newRequired);
  }

  // Gets an owner by 0-indexed position (using numOwners as the count)
  function getOwner(uint ownerIndex) external constant returns (address) {
    return address(m_owners[ownerIndex + 1]);
  }

  function isOwner(address _addr) constant returns (bool) {
    return m_ownerIndex[uint(_addr)] > 0;
  }

  function hasConfirmed(bytes32 _operation, address _owner) external constant returns (bool) {
    var pending = m_pending[_operation];
    uint ownerIndex = m_ownerIndex[uint(_owner)];

    // make sure they're an owner
    if (ownerIndex == 0) return false;

    // determine the bit to set for this owner.
    uint ownerIndexBit = 2**ownerIndex;
    return !(pending.ownersDone & ownerIndexBit == 0);
  }

  // constructor - stores initial daily limit and records the present day's index.
  function initDaylimit(uint _limit) {
    m_dailyLimit = _limit;
    m_lastDay = today();
  }
  // (re)sets the daily limit. needs many of the owners to confirm. doesn't alter the amount already spent today.
  function setDailyLimit(uint _newLimit) onlymanyowners(sha3(msg.data)) external {
    m_dailyLimit = _newLimit;
  }
  // resets the amount already spent today. needs many of the owners to confirm.
  function resetSpentToday() onlymanyowners(sha3(msg.data)) external {
    m_spentToday = 0;
  }

  // constructor - just pass on the owner array to the multiowned and
  // the limit to daylimit
  function initWallet(address[] _owners, uint _required, uint _daylimit) {
    initDaylimit(_daylimit);
    initMultiowned(_owners, _required);
  }

  // kills the contract sending everything to `_to`.
  function kill(address _to) onlymanyowners(sha3(msg.data)) external {
    suicide(_to);
  }

  // Outside-visible transact entry point. Executes transaction immediately if below daily spend limit.
  // If not, goes into multisig process. We provide a hash on return to allow the sender to provide
  // shortcuts for the other confirmations (allowing them to avoid replicating the _to, _value
  // and _data arguments). They still get the option of using them if they want, anyways.
  function execute(address _to, uint _value, bytes _data) external onlyowner returns (bytes32 o_hash) {
    // first, take the opportunity to check that we're under the daily limit.
    if ((_data.length == 0 && underLimit(_value)) || m_required == 1) {
      // yes - just execute the call.
      address created;
      if (_to == 0) {
        created = create(_value, _data);
      } else {
        if (!_to.call.value(_value)(_data))
          throw;
      }
      SingleTransact(msg.sender, _value, _to, _data, created);
    } else {
      // determine our operation hash.
      o_hash = sha3(msg.data, block.number);
      // store if it's new
      if (m_txs[o_hash].to == 0 && m_txs[o_hash].value == 0 && m_txs[o_hash].data.length == 0) {
        m_txs[o_hash].to = _to;
        m_txs[o_hash].value = _value;
        m_txs[o_hash].data = _data;
      }
      if (!confirm(o_hash)) {
        ConfirmationNeeded(o_hash, msg.sender, _value, _to, _data);
      }
    }
  }

  function create(uint _value, bytes _code) internal returns (address o_addr) {
    assembly {
      o_addr := create(_value, add(_code, 0x20), mload(_code))
      jumpi(invalidJumpLabel, iszero(extcodesize(o_addr)))
    }
  }

  // confirm a transaction through just the hash. we use the previous transactions map, m_txs, in order
  // to determine the body of the transaction from the hash provided.
  function confirm(bytes32 _h) onlymanyowners(_h) returns (bool o_success) {
    if (m_txs[_h].to != 0 || m_txs[_h].value != 0 || m_txs[_h].data.length != 0) {
      address created;
      if (m_txs[_h].to == 0) {
        created = create(m_txs[_h].value, m_txs[_h].data);
      } else {
        if (!m_txs[_h].to.call.value(m_txs[_h].value)(m_txs[_h].data))
          throw;
      }

      MultiTransact(msg.sender, _h, m_txs[_h].value, m_txs[_h].to, m_txs[_h].data, created);
      delete m_txs[_h];
      return true;
    }
  }

  // INTERNAL METHODS

  function confirmAndCheck(bytes32 _operation) internal returns (bool) {
    // determine what index the present sender is:
    uint ownerIndex = m_ownerIndex[uint(msg.sender)];
    // make sure they're an owner
    if (ownerIndex == 0) return;

    var pending = m_pending[_operation];
    // if we're not yet working on this operation, switch over and reset the confirmation status.
    if (pending.yetNeeded == 0) {
      // reset count of confirmations needed.
      pending.yetNeeded = m_required;
      // reset which owners have confirmed (none) - set our bitmap to 0.
      pending.ownersDone = 0;
      pending.index = m_pendingIndex.length++;
      m_pendingIndex[pending.index] = _operation;
    }
    // determine the bit to set for this owner.
    uint ownerIndexBit = 2**ownerIndex;
    // make sure we (the message sender) haven't confirmed this operation previously.
    if (pending.ownersDone & ownerIndexBit == 0) {
      Confirmation(msg.sender, _operation);
      // ok - check if count is enough to go ahead.
      if (pending.yetNeeded <= 1) {
        // enough confirmations: reset and run interior.
        delete m_pendingIndex[m_pending[_operation].index];
        delete m_pending[_operation];
        return true;
      }
      else
      {
        // not enough: record that this owner in particular confirmed.
        pending.yetNeeded--;
        pending.ownersDone |= ownerIndexBit;
      }
    }
  }

  function reorganizeOwners() private {
    uint free = 1;
    while (free < m_numOwners)
    {
      while (free < m_numOwners && m_owners[free] != 0) free++;
      while (m_numOwners > 1 && m_owners[m_numOwners] == 0) m_numOwners--;
      if (free < m_numOwners && m_owners[m_numOwners] != 0 && m_owners[free] == 0)
      {
        m_owners[free] = m_owners[m_numOwners];
        m_ownerIndex[m_owners[free]] = free;
        m_owners[m_numOwners] = 0;
      }
    }
  }

  // checks to see if there is at least `_value` left from the daily limit today. if there is, subtracts it and
  // returns true. otherwise just returns false.
  function underLimit(uint _value) internal onlyowner returns (bool) {
    // reset the spend limit if we're on a different day to last time.
    if (today() > m_lastDay) {
      m_spentToday = 0;
      m_lastDay = today();
    }
    // check to see if there's enough left - if so, subtract and return true.
    // overflow protection                    // dailyLimit check
    if (m_spentToday + _value >= m_spentToday && m_spentToday + _value <= m_dailyLimit) {
      m_spentToday += _value;
      return true;
    }
    return false;
  }

  // determines today's index.
  function today() private constant returns (uint) { return now / 1 days; }

  function clearPending() internal {
    uint length = m_pendingIndex.length;

    for (uint i = 0; i < length; ++i) {
      delete m_txs[m_pendingIndex[i]];

      if (m_pendingIndex[i] != 0)
        delete m_pending[m_pendingIndex[i]];
    }

    delete m_pendingIndex;
  }

  // FIELDS
  address constant _walletLibrary = 0xa657491c1e7f16adb39b9b60e87bbb8d93988bc3;

  // the number of owners that must confirm the same operation before it is run.
  uint public m_required;
  // pointer used to find a free slot in m_owners
  uint public m_numOwners;

  uint public m_dailyLimit;
  uint public m_spentToday;
  uint public m_lastDay;

  // list of owners
  uint[256] m_owners;

  uint constant c_maxOwners = 250;
  // index on the list of owners to allow reverse lookup
  mapping(uint => uint) m_ownerIndex;
  // the ongoing operations.
  mapping(bytes32 => PendingState) m_pending;
  bytes32[] m_pendingIndex;

  // pending transactions we have at present.
  mapping (bytes32 => Transaction) m_txs;
}

contract Wallet is WalletEvents {

  // WALLET CONSTRUCTOR
  //   calls the `initWallet` method of the Library in this context
  function Wallet(address[] _owners, uint _required, uint _daylimit) {
    // Signature of the Wallet Library's init function
    bytes4 sig = bytes4(sha3("initWallet(address[],uint256,uint256)"));
    address target = _walletLibrary;

    // Compute the size of the call data : arrays has 2
    // 32bytes for offset and length, plus 32bytes per element ;
    // plus 2 32bytes for each uint
    uint argarraysize = (2 + _owners.length);
    uint argsize = (2 + argarraysize) * 32;

    assembly {
      // Add the signature first to memory
      mstore(0x0, sig)
      // Add the call data, which is at the end of the
      // code
      codecopy(0x4,  sub(codesize, argsize), argsize)
      // Delegate call to the library
      delegatecall(sub(gas, 10000), target, 0x0, add(argsize, 0x4), 0x0, 0x0)
    }
  }

  // METHODS

  // gets called when no other function matches
  function() payable {
    // just being sent some cash?
    if (msg.value > 0)
      Deposit(msg.sender, msg.value);
    else if (msg.data.length > 0)
      _walletLibrary.delegatecall(msg.data);
  }

  // Gets an owner by 0-indexed position (using numOwners as the count)
  function getOwner(uint ownerIndex) constant returns (address) {
    return address(m_owners[ownerIndex + 1]);
  }

  // As return statement unavailable in fallback, explicit the method here

  function hasConfirmed(bytes32 _operation, address _owner) external constant returns (bool) {
    return _walletLibrary.delegatecall(msg.data);
  }

  function isOwner(address _addr) constant returns (bool) {
    return _walletLibrary.delegatecall(msg.data);
  }

  // FIELDS
  address constant _walletLibrary = 0xa657491c1e7f16adb39b9b60e87bbb8d93988bc3;

  // the number of owners that must confirm the same operation before it is run.
  uint public m_required;
  // pointer used to find a free slot in m_owners
  uint public m_numOwners;

  uint public m_dailyLimit;
  uint public m_spentToday;
  uint public m_lastDay;

  // list of owners
  uint[256] m_owners;
}