Address Contract Partially Verified
Address
0xEbAABAc3E56E06D4cE4056593f98599d316557E6
Balance
0 ETH
Nonce
1
Code Size
5954 bytes
Creator
0x42F7C51B...0137 at tx 0x91fd83df...946579
Indexed Transactions
0
Contract Bytecode
5954 bytes
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Verified Source Code Partial Match
Compiler: v0.4.15+commit.8b45bddb
Optimization: No
MultiSigWallet.sol 329 lines
// SPDX-License-Identifier: LGPL-3.0 // Modified from https://github.com/gnosis/MultiSigWallet/blob/master/contracts/MultiSigWallet.sol pragma solidity ^0.4.15; /// @title Multisignature wallet - Allows multiple parties to agree on transactions before execution. /// @author Stefan George - <[email protected]> contract MultiSigWallet { /* * Events */ event Confirmation(address indexed sender, uint indexed transactionId); event Revocation(address indexed sender, uint indexed transactionId); event Submission(uint indexed transactionId); event Execution(uint indexed transactionId); event ExecutionFailure(uint indexed transactionId); event Deposit(address indexed sender, uint value); event OwnerAddition(address indexed owner); event OwnerRemoval(address indexed owner); event RequirementChange(uint required); /* * Constants */ uint constant public MAX_OWNER_COUNT = 50; /* * Storage */ mapping (uint => Transaction) public transactions; mapping (uint => mapping (address => bool)) public confirmations; mapping (address => bool) public isOwner; address[] public owners; uint public required; uint public transactionCount; struct Transaction { address destination; uint value; bytes data; bool executed; } /* * Modifiers */ modifier onlyWallet() { require(msg.sender == address(this)); _; } modifier ownerDoesNotExist(address owner) { require(!isOwner[owner]); _; } modifier ownerExists(address owner) { require(isOwner[owner]); _; } modifier transactionExists(uint transactionId) { require(transactions[transactionId].destination != 0); _; } modifier confirmed(uint transactionId, address owner) { require(confirmations[transactionId][owner]); _; } modifier notConfirmed(uint transactionId, address owner) { require(!confirmations[transactionId][owner]); _; } modifier notExecuted(uint transactionId) { require(!transactions[transactionId].executed); _; } modifier notNull(address _address) { require(_address != 0); _; } modifier validRequirement(uint ownerCount, uint _required) { require(ownerCount <= MAX_OWNER_COUNT && _required <= ownerCount && _required != 0 && ownerCount != 0); _; } /// @dev Fallback function allows to deposit ether. function() payable { if (msg.value > 0) Deposit(msg.sender, msg.value); } /* * Public functions */ /// @dev Contract constructor sets initial owners and required number of confirmations. /// @param _owners List of initial owners. /// @param _required Number of required confirmations. function MultiSigWallet(address[] _owners, uint _required) public validRequirement(_owners.length, _required) { for (uint i=0; i<_owners.length; i++) { require(!isOwner[_owners[i]] && _owners[i] != 0); isOwner[_owners[i]] = true; } owners = _owners; required = _required; } /// @dev Allows 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]; } }
Write Contract 17 functions
These functions modify contract state and require a wallet transaction to execute.
MAX_OWNER_COUNT 0xd74f8edd
No parameters
returns: uint256
confirmTransaction 0xc01a8c84
uint256 transactionId
confirmations 0x3411c81c
uint256
address
returns: bool
executeTransaction 0xee22610b
uint256 transactionId
getConfirmationCount 0x8b51d13f
uint256 transactionId
returns: uint256
getConfirmations 0xb5dc40c3
uint256 transactionId
returns: address[]
getOwners 0xa0e67e2b
No parameters
returns: address[]
getTransactionCount 0x54741525
bool pending
bool executed
returns: uint256
getTransactionIds 0xa8abe69a
uint256 from
uint256 to
bool pending
bool executed
returns: uint256[]
isConfirmed 0x784547a7
uint256 transactionId
returns: bool
isOwner 0x2f54bf6e
address
returns: bool
owners 0x025e7c27
uint256
returns: address
required 0xdc8452cd
No parameters
returns: uint256
revokeConfirmation 0x20ea8d86
uint256 transactionId
submitTransaction 0xc6427474
address destination
uint256 value
bytes data
returns: uint256
transactionCount 0xb77bf600
No parameters
returns: uint256
transactions 0x9ace38c2
uint256
returns: address, uint256, bytes, bool
Recent Transactions
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