Contract Name:
MultiSigStub
Contract Source Code:
File 1 of 1 : MultiSigStub
pragma solidity ^0.4.15;
/**
* @title MultiSigStub
* @author Ricardo Guilherme Schmidt (Status Research & Development GmbH)
* @dev Contract that delegates calls to a library to build a full MultiSigWallet that is cheap to create.
*/
contract MultiSigStub {
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;
uint argarraysize = (2 + _owners.length);
uint argsize = (1 + argarraysize) * 32;
uint size = 4 + argsize;
bytes32 mData = _malloc(size);
assembly {
mstore(mData, sig)
codecopy(add(mData, 0x4), sub(codesize, argsize), argsize)
}
_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
{
}
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.
function isConfirmed(uint transactionId)
public
constant
delegated
returns (bool)
{
}
/*
* Web3 call functions
*/
function tokenBalances(address tokenAddress)
public
constant
delegated
returns (uint)
{
}
/// @dev Returns number of confirmations of a transaction.
/// @param transactionId Transaction ID.
/// @return Number of confirmations.
function getConfirmationCount(uint transactionId)
public
constant
delegated
returns (uint)
{
}
/// @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
delegated
returns (uint)
{
}
/// @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];
}
}
function _malloc(uint size)
private
returns(bytes32 mData)
{
assembly {
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);
}
}
contract MultiSigFactory {
event Create(address indexed caller, address createdContract);
function create(address[] owners, uint256 required) returns (address wallet){
wallet = new MultiSigStub(owners, required);
Create(msg.sender, wallet);
}
}
///////////////////////////////////////////////////////////////////
// MultiSigTokenWallet as in 0xc0FFeEE61948d8993864a73a099c0E38D887d3F4
///////////////////////////////////////////////////////////////////
pragma solidity ^0.4.15;
contract ERC20 {
uint256 public totalSupply;
function balanceOf(address who) constant returns (uint256 balance);
function allowance(address owner, address spender) constant returns (uint256 remaining);
function transfer(address to, uint256 value) returns (bool ok);
function transferFrom(address from, address to, uint256 value) returns (bool ok);
function approve(address spender, uint256 value) returns (bool ok);
event Transfer(address indexed from, address indexed to, uint256 value);
event Approval(address indexed owner, address indexed spender, uint256 value);
}
contract MultiSigTokenWallet {
address[] public owners;
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.
/// @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;
}
/**
* @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 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
* @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
**/
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 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];
}
}
}