diff options
Diffstat (limited to 'contracts/core/contracts/multisig/MultiSigWallet.sol')
| -rw-r--r-- | contracts/core/contracts/multisig/MultiSigWallet.sol | 393 |
1 files changed, 0 insertions, 393 deletions
diff --git a/contracts/core/contracts/multisig/MultiSigWallet.sol b/contracts/core/contracts/multisig/MultiSigWallet.sol deleted file mode 100644 index 516e7391c..000000000 --- a/contracts/core/contracts/multisig/MultiSigWallet.sol +++ /dev/null @@ -1,393 +0,0 @@ -// solhint-disable -pragma solidity ^0.4.15; - - -/// @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() - payable - { - if (msg.value > 0) - Deposit(msg.sender, msg.value); - } - - /* - * Public functions - */ - /// @dev Contract constructor sets initial owners and required number of confirmations. - /// @param _owners List of initial owners. - /// @param _required Number of required confirmations. - function MultiSigWallet(address[] _owners, uint _required) - public - validRequirement(_owners.length, _required) - { - for (uint i=0; i<_owners.length; i++) { - require(!isOwner[_owners[i]] && _owners[i] != 0); - isOwner[_owners[i]] = true; - } - owners = _owners; - required = _required; - } - - /// @dev Allows to add a new owner. Transaction has to be sent by wallet. - /// @param owner Address of new owner. - function addOwner(address owner) - public - onlyWallet - ownerDoesNotExist(owner) - notNull(owner) - validRequirement(owners.length + 1, required) - { - isOwner[owner] = true; - owners.push(owner); - OwnerAddition(owner); - } - - /// @dev Allows to remove an owner. Transaction has to be sent by wallet. - /// @param owner Address of owner. - function removeOwner(address owner) - public - onlyWallet - ownerExists(owner) - { - isOwner[owner] = false; - for (uint i=0; i<owners.length - 1; i++) - if (owners[i] == owner) { - owners[i] = owners[owners.length - 1]; - break; - } - owners.length -= 1; - if (required > owners.length) - changeRequirement(owners.length); - OwnerRemoval(owner); - } - - /// @dev Allows to replace an owner with a new owner. Transaction has to be sent by wallet. - /// @param owner Address of owner to be replaced. - /// @param newOwner Address of new owner. - function replaceOwner(address owner, address newOwner) - public - onlyWallet - ownerExists(owner) - ownerDoesNotExist(newOwner) - { - for (uint i=0; i<owners.length; i++) - if (owners[i] == owner) { - owners[i] = newOwner; - break; - } - isOwner[owner] = false; - isOwner[newOwner] = true; - OwnerRemoval(owner); - OwnerAddition(newOwner); - } - - /// @dev Allows to change the number of required confirmations. Transaction has to be sent by wallet. - /// @param _required Number of required confirmations. - function changeRequirement(uint _required) - public - onlyWallet - validRequirement(owners.length, _required) - { - required = _required; - RequirementChange(_required); - } - - /// @dev Allows an owner to submit and confirm a transaction. - /// @param destination Transaction target address. - /// @param value Transaction ether value. - /// @param data Transaction data payload. - /// @return Returns transaction ID. - function submitTransaction(address destination, uint value, bytes data) - public - returns (uint transactionId) - { - transactionId = addTransaction(destination, value, data); - confirmTransaction(transactionId); - } - - /// @dev Allows an owner to confirm a transaction. - /// @param transactionId Transaction ID. - function confirmTransaction(uint transactionId) - public - ownerExists(msg.sender) - transactionExists(transactionId) - notConfirmed(transactionId, msg.sender) - { - confirmations[transactionId][msg.sender] = true; - Confirmation(msg.sender, transactionId); - executeTransaction(transactionId); - } - - /// @dev Allows an owner to revoke a confirmation for a transaction. - /// @param transactionId Transaction ID. - function revokeConfirmation(uint transactionId) - public - ownerExists(msg.sender) - confirmed(transactionId, msg.sender) - notExecuted(transactionId) - { - confirmations[transactionId][msg.sender] = false; - Revocation(msg.sender, transactionId); - } - - /// @dev Allows anyone to execute a confirmed transaction. - /// @param transactionId Transaction ID. - function executeTransaction(uint transactionId) - public - ownerExists(msg.sender) - confirmed(transactionId, msg.sender) - notExecuted(transactionId) - { - if (isConfirmed(transactionId)) { - Transaction storage txn = transactions[transactionId]; - txn.executed = true; - if (external_call(txn.destination, txn.value, txn.data.length, txn.data)) - Execution(transactionId); - else { - ExecutionFailure(transactionId); - txn.executed = false; - } - } - } - - // call has been separated into its own function in order to take advantage - // of the Solidity's code generator to produce a loop that copies tx.data into memory. - function external_call(address destination, uint value, uint dataLength, bytes data) internal returns (bool) { - bool result; - assembly { - let x := mload(0x40) // "Allocate" memory for output (0x40 is where "free memory" pointer is stored by convention) - let d := add(data, 32) // First 32 bytes are the padded length of data, so exclude that - result := call( - sub(gas, 34710), // 34710 is the value that solidity is currently emitting - // It includes callGas (700) + callVeryLow (3, to pay for SUB) + callValueTransferGas (9000) + - // callNewAccountGas (25000, in case the destination address does not exist and needs creating) - destination, - value, - d, - dataLength, // Size of the input (in bytes) - this is what fixes the padding problem - x, - 0 // Output is ignored, therefore the output size is zero - ) - } - return 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); - } - - /* - * 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]; - } -}
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