Merge pull request #157 from 3esmit/new-multisig

Improved Multisig

contracts/DelegatedCall.sol

@@ -0,0 +1,72 @@
+pragma solidity ^0.4.18;
+
+/**
+ * @title DelegatedCall
+ * @author Ricardo Guilherme Schmidt (Status Research & Development GmbH) 
+ * Abstract contract that delegates all calls to contract returned by abstract function `_getDelegatedContract`
+ */
+contract DelegatedCall {
+
+    /**
+     * @dev delegates the call of this function
+     */
+    modifier delegated 
+    {
+        uint inSize = msg.data.length;
+        bytes32 inDataPtr = _malloc(inSize);
+
+        assembly {
+            calldatacopy(inDataPtr, 0x0, inSize)
+        }
+
+        bytes32 outDataPtr;
+        uint256 outSize;
+
+        (outDataPtr, outSize) = _delegatecall(inDataPtr, inSize);
+        _;
+        assembly {
+            return(outDataPtr, outSize)
+        }
+    }
+
+    /**
+     * @dev defines the address for delegation of calls
+     */
+    function _getDelegatedContract()
+        internal
+        returns(address);
+
+    /**
+     * @dev allocates memory to a pointer
+     */
+    function _malloc(uint size) 
+        internal 
+        returns(bytes32 ptr) 
+    {
+        assembly {
+            ptr := mload(0x40)
+            mstore(0x40, add(ptr, size))
+        }
+    }
+
+    /**
+     * @dev delegates the data in pointer 
+     */
+    function _delegatecall(bytes32 inDataPtr, uint inSize) 
+        internal 
+        returns(bytes32 outDataPtr, uint256 outSize) 
+    {
+        address target = _getDelegatedContract();
+        bool failed;
+        assembly {
+            failed := iszero(delegatecall(sub(gas, 10000), target, inDataPtr, inSize, 0, 0))
+            outSize := returndatasize
+        }
+        require(!failed);
+        outDataPtr = _malloc(outSize);
+        assembly {
+            returndatacopy(outDataPtr, 0, outSize)
+        }
+    }
+
+}

contracts/ERC20.sol

@@ -1,12 +1,12 @@
-pragma solidity ^0.4.15;
+pragma solidity ^0.4.18;
 
 contract ERC20 {
     uint256 public totalSupply;
-    function balanceOf(address who) constant returns (uint256);
+    function balanceOf(address who) public constant returns (uint256);
-    function allowance(address owner, address spender) constant returns (uint256);
+    function allowance(address owner, address spender) public constant returns (uint256);
-    function transfer(address to, uint256 value) returns (bool ok);
+    function transfer(address to, uint256 value) public returns (bool ok);
-    function transferFrom(address from, address to, uint256 value) returns (bool ok);
+    function transferFrom(address from, address to, uint256 value) public returns (bool ok);
-    function approve(address spender, uint256 value) returns (bool ok);
+    function approve(address spender, uint256 value) public returns (bool ok);
     event Transfer(address indexed from, address indexed to, uint256 value);
     event Approval(address indexed owner, address indexed spender, uint256 value);
 }

contracts/MultiSigFactory.sol

@@ -1,4 +1,4 @@
-pragma solidity ^0.4.15;
+pragma solidity ^0.4.18;
 
 import "./MultiSigStub.sol";
 
@@ -6,7 +6,10 @@ contract MultiSigFactory {
     
     event Create(address indexed caller, address createdContract);
 
-    function create(address[] owners, uint256 required) returns (address wallet) {
+    function create(address[] owners, uint256 required)  
+        public 
+        returns (address wallet) 
+    {
         wallet = new MultiSigStub(owners, required); 
         Create(msg.sender, wallet);
     }

contracts/MultiSigStub.sol

@@ -1,24 +1,14 @@
-pragma solidity ^0.4.15;
+pragma solidity ^0.4.18;
+
+import "./DelegatedCall.sol";
 
 /**
  * @title MultiSigStub  
+ * @author Ricardo Guilherme Schmidt (Status Research & Development GmbH) 
  * Contract that delegates calls to a library to build a full MultiSigWallet that is cheap to create. 
  */
-contract MultiSigStub {
+contract MultiSigStub is DelegatedCall {
 
-    address[] public owners;
-    address[] public tokens;
-    mapping (uint => Transaction) public transactions;
-    mapping (uint => mapping (address => bool)) public confirmations;
-    uint public transactionCount;
-
-    struct Transaction {
-        address destination;
-        uint value;
-        bytes data;
-        bool executed;
-    }
-    
     function MultiSigStub(address[] _owners, uint256 _required) {
         //bytes4 sig = bytes4(sha3("constructor(address[],uint256)"));
         bytes4 sig = 0x36756a23;
@@ -34,21 +24,6 @@ contract MultiSigStub {
         _delegatecall(mData, size);
     }
     
-    modifier delegated {
-        uint size = msg.data.length;
-        bytes32 mData = _malloc(size);
-
-        assembly {
-            calldatacopy(mData, 0x0, size)
-        }
-
-        bytes32 mResult = _delegatecall(mData, size);
-        _;
-        assembly {
-            return(mResult, 0x20)
-        }
-    }
-    
     function()
         payable
         delegated
@@ -56,34 +31,6 @@ contract MultiSigStub {
 
     }
 
-    function submitTransaction(address destination, uint value, bytes data)
-        public
-        delegated
-        returns (uint)
-    {
-        
-    }
-    
-    function confirmTransaction(uint transactionId)
-        public
-        delegated
-    {
-        
-    }
-    
-    function watch(address _tokenAddr)
-        public
-        delegated
-    {
-        
-    }
-    
-    function setMyTokenList(address[] _tokenList)  
-        public
-        delegated
-    {
-
-    }
     /// @dev Returns the confirmation status of a transaction.
     /// @param transactionId Transaction ID.
     /// @return Confirmation status.
@@ -99,15 +46,6 @@ contract MultiSigStub {
     /*
     * Web3 call functions
     */
-    function tokenBalances(address tokenAddress) 
-        public
-        constant 
-        delegated 
-        returns (uint)
-    {
-
-    }
-
 
     /// @dev Returns number of confirmations of a transaction.
     /// @param transactionId Transaction ID.
@@ -139,19 +77,10 @@ contract MultiSigStub {
     function getOwners()
         public
         constant
+        delegated
         returns (address[])
     {
-        return owners;
-    }
 
-    /// @dev Returns list of tokens.
-    /// @return List of token addresses.
-    function getTokenList()
-        public
-        constant
-        returns (address[])
-    {
-        return tokens;
     }
 
     /// @dev Returns array with owner addresses, which confirmed transaction.
@@ -160,21 +89,10 @@ contract MultiSigStub {
     function getConfirmations(uint transactionId)
         public
         constant
+        delegated
         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.
@@ -183,50 +101,20 @@ contract MultiSigStub {
     /// @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)
+    function getTransactionIds(uint from, uint to, bool pending, bool executed) 
         public
         constant
+        delegated
         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];
-        }
     }
 
-
+    function _getDelegatedContract()
-    function _malloc(uint size) 
+        internal
-        private 
+        returns(address)
-        returns(bytes32 mData) 
     {
-        assembly {
+        return 0xCaFFE810d0dF52E27DC580AD4a3C6283B0094291; //hardcoded multinetwork address   
-            mData := mload(0x40)
-            mstore(0x40, add(mData, size))
-        }
-    }
-
-    function _delegatecall(bytes32 mData, uint size) 
-        private 
-        returns(bytes32 mResult) 
-    {
-        address target = 0xc0FFeEE61948d8993864a73a099c0E38D887d3F4; //Multinetwork
-        mResult = _malloc(32);
-        bool failed;
-
-        assembly {
-            failed := iszero(delegatecall(sub(gas, 10000), target, mData, size, mResult, 0x20))
-        }
-
-        assert(!failed);
     }
     
 }

contracts/MultiSigTokenWallet.sol

@@ -1,114 +1,30 @@
-pragma solidity ^0.4.15;
+pragma solidity ^0.4.18;
 
+import "./MultiSigWallet.sol";
 import "./ERC20.sol";
 
-contract MultiSigTokenWallet {
+/**
+ * @title MultiSigTokenWallet
+ * @author Ricardo Guilherme Schmidt (Status Research & Development GmbH) 
+ * MultiSigWallet that supports withdrawing all ERC20 tokens at once.
+ */
+contract MultiSigTokenWallet is MultiSigWallet {
 
-    address[] public owners;
+    event TokenDeposit(address indexed token, address indexed sender, uint value);
-    address[] public tokens;
-    mapping (uint => Transaction) public transactions;
-    mapping (uint => mapping (address => bool)) public confirmations;
-    uint public transactionCount;
-    
-    mapping (address => uint) public tokenBalances;
-    mapping (address => bool) public isOwner;
-    mapping (address => address[]) public userList;
-    uint public required;
-    uint public nonce;
-
-    struct Transaction {
-        address destination;
-        uint value;
-        bytes data;
-        bool executed;
-    }
-
-    uint constant public MAX_OWNER_COUNT = 50;
-
-    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 TokenDeposit(address _token, address indexed _sender, uint _value);
-    event OwnerAddition(address indexed _owner);
-    event OwnerRemoval(address indexed _owner);
-    event RequirementChange(uint _required);
-    
-    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.
+     * @dev only call parent constructor
-    /// @param _required Number of required confirmations.
+     */
-    function constructor(address[] _owners, uint _required)
+    function MultiSigTokenWallet(address[] _owners, uint _required) 
-        public
+        MultiSigWallet(_owners,_required) 
-        validRequirement(_owners.length, _required)
+        public 
     {
-        require(owners.length == 0 && required == 0);
+        //does nothing
-        for (uint i = 0; i < _owners.length; i++) {
-            require(!isOwner[_owners[i]] && _owners[i] != 0);
-            isOwner[_owners[i]] = true;
-        }
-        owners = _owners;
-        required = _required;
     }
-
     /**
     * @notice deposit a ERC20 token. The amount of deposit is the allowance set to this contract.
     * @param _token the token contract address
@@ -132,49 +48,26 @@ contract MultiSigTokenWallet {
     {
         if (_from == address(this))
             return;
-        uint _nonce = nonce;
         bool result = ERC20(_token).transferFrom(_from, this, _amount);
-        assert(result);
+        require(result);
-        //ERC23 not executed _deposited tokenFallback by
+        TokenDeposit(_token, _from, _amount);
-        if (nonce == _nonce) {
-            _deposited(_from, _amount, _token, _data);
-        }
-    }
-    /**
-    * @notice watches for balance in a token contract
-    * @param _tokenAddr the token contract address
-    **/   
-    function watch(address _tokenAddr) 
-        ownerExists(msg.sender) 
-    {
-        uint oldBal = tokenBalances[_tokenAddr];
-        uint newBal = ERC20(_tokenAddr).balanceOf(this);
-        if (newBal > oldBal) {
-            _deposited(0x0, newBal-oldBal, _tokenAddr, new bytes(0));
-        }
     }
 
-    function setMyTokenList(address[] _tokenList) 
-        public
-    {
-        userList[msg.sender] = _tokenList;
-    }
-
-    function setTokenList(address[] _tokenList) 
-        onlyWallet
-    {
-        tokens = _tokenList;
-    }
-    
     /**
     * @notice ERC23 Token fallback
     * @param _from address incoming token
     * @param _amount incoming amount
     **/    
-    function tokenFallback(address _from, uint _amount, bytes _data) 
+    function tokenFallback(
+        address _from,
+        uint _amount,
+        bytes _data
+    ) 
         public 
+        returns (bool)
     {
-        _deposited(_from, _amount, msg.sender, _data);
+        TokenDeposit(msg.sender, _from, _amount);
+        return true;
     }
         
     /** 
@@ -184,366 +77,50 @@ contract MultiSigTokenWallet {
     * @param _token the token contract address
     * @param _data (might be used by child classes)
     */ 
-    function receiveApproval(address _from, uint256 _amount, address _token, bytes _data) {
+    function receiveApproval(
+        address _from,
+        uint256 _amount,
+        address _token,
+        bytes _data
+    )
+        public
+    {
         deposit(_from, _amount, _token, _data);
     }
     
 
-    /// @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;
-        uint _len = owners.length - 1;
-        for (uint i = 0; i < _len; 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 owner 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 gives full ownership of this wallet to `_dest` removing older owners from wallet
+    * @dev withdraw all tokens in list and ether to `_dest`
-    * @param _dest the address of new controller
-    **/    
-    function releaseWallet(address _dest)
-        public
-        notNull(_dest)
-        ownerDoesNotExist(_dest)
-        onlyWallet
-    {
-        address[] memory _owners = owners;
-        uint numOwners = _owners.length;
-        addOwner(_dest);
-        for (uint i = 0; i < numOwners; i++) {
-            removeOwner(_owners[i]);
-        }
-    }
-
-    /// @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
-        notExecuted(transactionId)
-    {
-        if (isConfirmed(transactionId)) {
-            Transaction storage txx = transactions[transactionId];
-            txx.executed = true;
-            if (txx.destination.call.value(txx.value)(txx.data)) {
-                Execution(transactionId);
-            } else {
-                ExecutionFailure(transactionId);
-                txx.executed = false;
-            }
-        }
-    }
-
-    /**
-    * @dev withdraw all recognized tokens balances and ether to `_dest`
     * @param _dest the address of receiver
+    * @param _tokenList the list of tokens to withdraw all balance
     **/    
-    function withdrawEverything(address _dest) 
+    function withdrawEverything(address _dest, address[] _tokenList) 
         public
         notNull(_dest)
         onlyWallet
     {
-        withdrawAllTokens(_dest);
+        withdrawAllTokens(_dest, _tokenList);
         _dest.transfer(this.balance);
     }
 
     /**
-    * @dev withdraw all recognized tokens balances to `_dest`
+    * @dev withdraw all listed tokens balances to `_dest`
     * @param _dest the address of receiver
+    * @param _tokenList the list of tokens to withdraw all balance
     **/    
-    function withdrawAllTokens(address _dest) 
+    function withdrawAllTokens(address _dest, address[] _tokenList) 
         public 
         notNull(_dest)
         onlyWallet
     {
-        address[] memory _tokenList;
-        if (userList[_dest].length > 0) {
-            _tokenList = userList[_dest];
-        } else {
-            _tokenList = tokens;
-        }
         uint len = _tokenList.length;
         for (uint i = 0;i < len; i++) {
             address _tokenAddr = _tokenList[i];
-            uint _amount = tokenBalances[_tokenAddr];
+            uint _amount = ERC20(_tokenAddr).balanceOf(address(this));
             if (_amount > 0) {
-                delete tokenBalances[_tokenAddr];
                 ERC20(_tokenAddr).transfer(_dest, _amount);
             }
         }
     }
 
-    /**
+}
-    * @dev withdraw `_tokenAddr` `_amount` to `_dest`
-    * @param _tokenAddr the address of the token
-    * @param _dest the address of receiver
-    * @param _amount the number of tokens to send
-    **/
-    function withdrawToken(address _tokenAddr, address _dest, uint _amount)
-        public
-        notNull(_dest)
-        onlyWallet 
-    {
-        require(_amount > 0);
-        uint _balance = tokenBalances[_tokenAddr];
-        require(_amount <= _balance);
-        tokenBalances[_tokenAddr] = _balance - _amount;
-        bool result = ERC20(_tokenAddr).transfer(_dest, _amount);
-        assert(result);
-    }
-
-    /// @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);
-    }
-    
-    /**
-    * @dev register the deposit
-    **/
-    function _deposited(address _from,  uint _amount, address _tokenAddr, bytes) 
-        internal 
-    {
-        TokenDeposit(_tokenAddr,_from,_amount);
-        nonce++;
-        if (tokenBalances[_tokenAddr] == 0) {
-            tokens.push(_tokenAddr);  
-            tokenBalances[_tokenAddr] = ERC20(_tokenAddr).balanceOf(this);
-        } else {
-            tokenBalances[_tokenAddr] += _amount;
-        }
-    }
-    
-    /*
-    * 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 filters 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 list of tokens.
-    /// @return List of token addresses.
-    function getTokenList()
-        public
-        constant
-        returns (address[])
-    {
-        return tokens;
-    }
-
-    /// @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];
-        }
-    }
-
-}

contracts/MultiSigTokenWalletV1.sol

@@ -0,0 +1,203 @@
+pragma solidity ^0.4.15;
+
+import "./MultiSigWallet.sol";
+import "./ERC20.sol";
+// @dev This contract is deprecated, use the new version.
+contract MultiSigTokenWalletV1 is MultiSigWallet {
+
+    address[] public tokens;
+    mapping (address => uint) public tokenBalances;
+    mapping (address => address[]) public userList;
+    uint public nonce;
+
+    event TokenDeposit(address _token, address indexed _sender, uint _value);
+
+    /**
+    * Public functions
+    * 
+    **/
+    /**
+    * @notice deposit a ERC20 token. The amount of deposit is the allowance set to this contract.
+    * @param _token the token contract address
+    * @param _data might be used by child implementations
+    **/ 
+    function depositToken(address _token, bytes _data) 
+        public 
+    {
+        address sender = msg.sender;
+        uint amount = ERC20(_token).allowance(sender, this);
+        deposit(sender, amount, _token, _data);
+    }
+        
+    /**
+    * @notice deposit a ERC20 token. The amount of deposit is the allowance set to this contract.
+    * @param _token the token contract address
+    * @param _data might be used by child implementations
+    **/ 
+    function deposit(address _from, uint256 _amount, address _token, bytes _data) 
+        public 
+    {
+        if (_from == address(this))
+            return;
+        uint _nonce = nonce;
+        bool result = ERC20(_token).transferFrom(_from, this, _amount);
+        assert(result);
+        //ERC23 not executed _deposited tokenFallback by
+        if (nonce == _nonce) {
+            _deposited(_from, _amount, _token, _data);
+        }
+    }
+    /**
+    * @notice watches for balance in a token contract
+    * @param _tokenAddr the token contract address
+    **/   
+    function watch(address _tokenAddr) 
+        ownerExists(msg.sender) 
+    {
+        uint oldBal = tokenBalances[_tokenAddr];
+        uint newBal = ERC20(_tokenAddr).balanceOf(this);
+        if (newBal > oldBal) {
+            _deposited(0x0, newBal-oldBal, _tokenAddr, new bytes(0));
+        }
+    }
+
+    function setMyTokenList(address[] _tokenList) 
+        public
+    {
+        userList[msg.sender] = _tokenList;
+    }
+
+    function setTokenList(address[] _tokenList) 
+        onlyWallet
+    {
+        tokens = _tokenList;
+    }
+    
+    /**
+    * @notice ERC23 Token fallback
+    * @param _from address incoming token
+    * @param _amount incoming amount
+    **/    
+    function tokenFallback(address _from, uint _amount, bytes _data) 
+        public 
+    {
+        _deposited(_from, _amount, msg.sender, _data);
+    }
+        
+    /** 
+    * @notice Called MiniMeToken approvesAndCall to this contract, calls deposit.
+    * @param _from address incoming token
+    * @param _amount incoming amount
+    * @param _token the token contract address
+    * @param _data (might be used by child classes)
+    */ 
+    function receiveApproval(address _from, uint256 _amount, address _token, bytes _data) {
+        deposit(_from, _amount, _token, _data);
+    }
+    
+    /**
+    * @dev gives full ownership of this wallet to `_dest` removing older owners from wallet
+    * @param _dest the address of new controller
+    **/    
+    function releaseWallet(address _dest)
+        public
+        notNull(_dest)
+        ownerDoesNotExist(_dest)
+        onlyWallet
+    {
+        address[] memory _owners = owners;
+        uint numOwners = _owners.length;
+        addOwner(_dest);
+        for (uint i = 0; i < numOwners; i++) {
+            removeOwner(_owners[i]);
+        }
+    }
+
+    /**
+    * @dev withdraw all recognized tokens balances and ether to `_dest`
+    * @param _dest the address of receiver
+    **/    
+    function withdrawEverything(address _dest) 
+        public
+        notNull(_dest)
+        onlyWallet
+    {
+        withdrawAllTokens(_dest);
+        _dest.transfer(this.balance);
+    }
+
+    /**
+    * @dev withdraw all recognized tokens balances to `_dest`
+    * @param _dest the address of receiver
+    **/    
+    function withdrawAllTokens(address _dest) 
+        public 
+        notNull(_dest)
+        onlyWallet
+    {
+        address[] memory _tokenList;
+        if (userList[_dest].length > 0) {
+            _tokenList = userList[_dest];
+        } else {
+            _tokenList = tokens;
+        }
+        uint len = _tokenList.length;
+        for (uint i = 0;i < len; i++) {
+            address _tokenAddr = _tokenList[i];
+            uint _amount = tokenBalances[_tokenAddr];
+            if (_amount > 0) {
+                delete tokenBalances[_tokenAddr];
+                ERC20(_tokenAddr).transfer(_dest, _amount);
+            }
+        }
+    }
+
+    /**
+    * @dev withdraw `_tokenAddr` `_amount` to `_dest`
+    * @param _tokenAddr the address of the token
+    * @param _dest the address of receiver
+    * @param _amount the number of tokens to send
+    **/
+    function withdrawToken(address _tokenAddr, address _dest, uint _amount)
+        public
+        notNull(_dest)
+        onlyWallet 
+    {
+        require(_amount > 0);
+        uint _balance = tokenBalances[_tokenAddr];
+        require(_amount <= _balance);
+        tokenBalances[_tokenAddr] = _balance - _amount;
+        bool result = ERC20(_tokenAddr).transfer(_dest, _amount);
+        assert(result);
+    }
+    
+    /**
+    * @dev register the deposit
+    **/
+    function _deposited(address _from,  uint _amount, address _tokenAddr, bytes) 
+        internal 
+    {
+        TokenDeposit(_tokenAddr,_from,_amount);
+        nonce++;
+        if (tokenBalances[_tokenAddr] == 0) {
+            tokens.push(_tokenAddr);  
+            tokenBalances[_tokenAddr] = ERC20(_tokenAddr).balanceOf(this);
+        } else {
+            tokenBalances[_tokenAddr] += _amount;
+        }
+    }
+    
+    /*
+    * Web3 call functions
+    */
+    /// @dev Returns list of tokens.
+    /// @return List of token addresses.
+    function getTokenList()
+        public
+        constant
+        returns (address[])
+    {
+        return tokens;
+    }
+
+}

contracts/MultiSigWallet.sol

@@ -0,0 +1,378 @@
+pragma solidity ^0.4.18;
+
+
+/// @title Multisignature wallet - Allows multiple parties to agree on transactions before execution.
+/// @author Stefan George - <stefan.george@consensys.net>
+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 ()
+        public
+        payable
+    {
+        if (msg.value > 0)
+            Deposit(msg.sender, msg.value);
+    }
+
+    /*
+     * Public functions
+     */
+    /// @dev Constructor calls function `constructor(address[],uint256)`
+    /// @param _owners List of initial owners.
+    /// @param _required Number of required confirmations.
+    function MultiSigWallet(address[] _owners, uint _required)
+        public
+    {
+        constructor(_owners, _required);
+    }
+
+    /// @dev Contract constructor sets initial owners and required number of confirmations, can only be called once.
+    /// @param _owners List of initial owners.
+    /// @param _required Number of required confirmations.
+    function constructor(address[] _owners, uint _required)
+        public
+        validRequirement(_owners.length, _required)
+    {
+        require(owners.length == 0 && required == 0);
+        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 trx = transactions[transactionId];
+            trx.executed = true;
+            if (trx.destination.call.value(trx.value)(trx.data))
+                Execution(transactionId);
+            else {
+                ExecutionFailure(transactionId);
+                trx.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];
+    }
+}