Sponsored
Сoins.game
100 free spins for registration. Spin now!
Everyday giveaways up to 100 ETH, Lucky Spins. Deposit BONUS 300% and Cashbacks!
BC.GAME
- The Best ETH Casino Claim Now!
5000+ Slots & Live Casino Games, 50+cryptos. Register with Etherscan and get 760% deposit bonus. Win Big$, withdraw it fast.
Sponsored
BC.GAME
- The Best ETH Casino Claim Now!
5000+ Slots & Live Casino Games, 50+cryptos. Register with Etherscan and get 760% deposit bonus. Win Big$, withdraw it fast.
CryptoWins
$5 Freebie + 137% Match up to 1 BTC Welcome Booster! Claim Now!
Dive into 100s of games and play anonymously with major cryptos. Join CryptoWins today!
CryptoSlots
Play & Get 25 Free Spins at CryptoSlots Play Now
Anonymous play on awesome games - sign up now for 25 free jackpot spins - worth $100s!
Overview
ETH Balance
3.606744143 ETH
Eth Value
$9,447.11 (@ $2,619.29/ETH)Token Holdings
- ERC-20 Tokens (11)65.868 OMG
OMG Network (OMG)$16.21@0.246115,989.01 REN
Republic (REN)$551.31@0.03451 STT
Scatter.cx (STT)$0.00@0.007.56917448 ZRX
ZRX (ZRX)$2.39@0.31521 AMB
Amber (AMB)$0.01@0.00813.60674414 EBK
Ebakus0 ERC20
ERC200.001 XLDZ
LD2.zero9 MYCMycion (MYC)1.4 TokenERC-20 TOKEN*[Suspicious]1.7 TokenERC-20 TOKEN*[Suspicious]
ERC-1155 TOKEN*More Info
Private Name Tags
ContractCreator
Latest 25 from a total of 364 transactions
| Transaction Hash |
Method
|
Block
|
From
|
To
|
|||||
|---|---|---|---|---|---|---|---|---|---|
| Withdraw | 7191099 | 2098 days ago | IN | 0 ETH | 0.00163599 | ||||
| Withdraw | 7190259 | 2098 days ago | IN | 0 ETH | 0.00018107 | ||||
| Withdraw | 7187513 | 2099 days ago | IN | 0 ETH | 0.00020437 | ||||
| Withdraw | 7176752 | 2101 days ago | IN | 0 ETH | 0.00048282 | ||||
| Withdraw | 7156138 | 2105 days ago | IN | 0 ETH | 0.00030837 | ||||
| Withdraw | 7156132 | 2105 days ago | IN | 0 ETH | 0.00048112 | ||||
| Withdraw | 7146895 | 2107 days ago | IN | 0 ETH | 0.00038761 | ||||
| Withdraw | 7146892 | 2107 days ago | IN | 0 ETH | 0.0002725 | ||||
| Withdraw | 7146889 | 2107 days ago | IN | 0 ETH | 0.00041498 | ||||
| Withdraw | 7146885 | 2107 days ago | IN | 0 ETH | 0.00034363 | ||||
| Withdraw | 7146519 | 2107 days ago | IN | 0 ETH | 0.00030995 | ||||
| Withdraw | 7146516 | 2107 days ago | IN | 0 ETH | 0.00030993 | ||||
| Withdraw | 7146512 | 2107 days ago | IN | 0 ETH | 0.00020743 | ||||
| Withdraw | 7146499 | 2107 days ago | IN | 0 ETH | 0.00030382 | ||||
| Withdraw | 7146497 | 2107 days ago | IN | 0 ETH | 0.00016319 | ||||
| Withdraw | 7141972 | 2108 days ago | IN | 0 ETH | 0.00060353 | ||||
| Withdraw | 7138881 | 2109 days ago | IN | 0 ETH | 0.00039579 | ||||
| Withdraw | 7138880 | 2109 days ago | IN | 0 ETH | 0.00069036 | ||||
| Withdraw | 7138878 | 2109 days ago | IN | 0 ETH | 0.00039643 | ||||
| Withdraw | 7138876 | 2109 days ago | IN | 0 ETH | 0.00069351 | ||||
| Withdraw | 7138874 | 2109 days ago | IN | 0 ETH | 0.00045333 | ||||
| Withdraw | 7121275 | 2112 days ago | IN | 0 ETH | 0.0002705 | ||||
| Withdraw | 7121271 | 2112 days ago | IN | 0 ETH | 0.00034299 | ||||
| Withdraw | 7121269 | 2112 days ago | IN | 0 ETH | 0.00042143 | ||||
| Withdraw | 7121263 | 2112 days ago | IN | 0 ETH | 0.00022708 |
Latest 25 internal transactions (View All)
Advanced mode:
| Parent Transaction Hash | Block | From | To | |||
|---|---|---|---|---|---|---|
| 7190259 | 2098 days ago | 0.076 ETH | ||||
| 7187513 | 2099 days ago | 1.09281 ETH | ||||
| 7176752 | 2101 days ago | 1.5 ETH | ||||
| 7156132 | 2105 days ago | 0.024 ETH | ||||
| 7146892 | 2107 days ago | 8.9022556 ETH | ||||
| 7146497 | 2107 days ago | 7.5660472 ETH | ||||
| 7141972 | 2108 days ago | 4.1 ETH | ||||
| 7138874 | 2109 days ago | 4.2662174 ETH | ||||
| 7121263 | 2112 days ago | 10.5614279 ETH | ||||
| 7118457 | 2113 days ago | 4.4508637 ETH | ||||
| 7115980 | 2113 days ago | 0.00576 ETH | ||||
| 7113319 | 2114 days ago | 0.0036936 ETH | ||||
| 7113273 | 2114 days ago | 0.35904131 ETH | ||||
| 7113223 | 2114 days ago | 0.0023996 ETH | ||||
| 7112496 | 2114 days ago | 0.00387 ETH | ||||
| 7109796 | 2114 days ago | 0.005136 ETH | ||||
| 7108602 | 2115 days ago | 0.0030752 ETH | ||||
| 7108581 | 2115 days ago | 0.005706 ETH | ||||
| 7099276 | 2116 days ago | 0.004515 ETH | ||||
| 7099247 | 2116 days ago | 0.004264 ETH | ||||
| 7098836 | 2116 days ago | 1.01 ETH | ||||
| 7096156 | 2117 days ago | 0.0049 ETH | ||||
| 7085224 | 2119 days ago | 0.00632 ETH | ||||
| 7084312 | 2119 days ago | 0.004438 ETH | ||||
| 7084210 | 2119 days ago | 0.0043758 ETH |
Loading...
Loading
Contract Name:
RenExBalances
Compiler Version
v0.4.24+commit.e67f0147
Optimization Enabled:
Yes with 200 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity)
/**
*Submitted for verification at Etherscan.io on 2018-09-27
*/
pragma solidity 0.4.24;
/**
* @title ERC20Basic
* @dev Simpler version of ERC20 interface
* See https://github.com/ethereum/EIPs/issues/179
*/
contract ERC20Basic {
function totalSupply() public view returns (uint256);
function balanceOf(address who) public view returns (uint256);
function transfer(address to, uint256 value) public returns (bool);
event Transfer(address indexed from, address indexed to, uint256 value);
}
/**
* @title ERC20 interface
* @dev see https://github.com/ethereum/EIPs/issues/20
*/
contract ERC20 is ERC20Basic {
function allowance(address owner, address spender)
public view returns (uint256);
function transferFrom(address from, address to, uint256 value)
public returns (bool);
function approve(address spender, uint256 value) public returns (bool);
event Approval(
address indexed owner,
address indexed spender,
uint256 value
);
}
/**
* @title SafeMath
* @dev Math operations with safety checks that throw on error
*/
library SafeMath {
/**
* @dev Multiplies two numbers, throws on overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256 c) {
// Gas optimization: this is cheaper than asserting 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-solidity/pull/522
if (a == 0) {
return 0;
}
c = a * b;
assert(c / a == b);
return c;
}
/**
* @dev Integer division of two numbers, truncating the quotient.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
// assert(b > 0); // Solidity automatically throws when dividing by 0
// uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return a / b;
}
/**
* @dev Subtracts two numbers, throws on overflow (i.e. if subtrahend is greater than minuend).
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
assert(b <= a);
return a - b;
}
/**
* @dev Adds two numbers, throws on overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256 c) {
c = a + b;
assert(c >= a);
return c;
}
}
/**
* @title Ownable
* @dev The Ownable contract has an owner address, and provides basic authorization control
* functions, this simplifies the implementation of "user permissions".
*/
contract Ownable {
address public owner;
event OwnershipRenounced(address indexed previousOwner);
event OwnershipTransferred(
address indexed previousOwner,
address indexed newOwner
);
/**
* @dev The Ownable constructor sets the original `owner` of the contract to the sender
* account.
*/
constructor() public {
owner = msg.sender;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(msg.sender == owner);
_;
}
/**
* @dev Allows the current owner to relinquish control of the contract.
* @notice Renouncing to ownership will leave the contract without an owner.
* It will not be possible to call the functions with the `onlyOwner`
* modifier anymore.
*/
function renounceOwnership() public onlyOwner {
emit OwnershipRenounced(owner);
owner = address(0);
}
/**
* @dev Allows the current owner to transfer control of the contract to a newOwner.
* @param _newOwner The address to transfer ownership to.
*/
function transferOwnership(address _newOwner) public onlyOwner {
_transferOwnership(_newOwner);
}
/**
* @dev Transfers control of the contract to a newOwner.
* @param _newOwner The address to transfer ownership to.
*/
function _transferOwnership(address _newOwner) internal {
require(_newOwner != address(0));
emit OwnershipTransferred(owner, _newOwner);
owner = _newOwner;
}
}
/**
* @title Basic token
* @dev Basic version of StandardToken, with no allowances.
*/
contract BasicToken is ERC20Basic {
using SafeMath for uint256;
mapping(address => uint256) balances;
uint256 totalSupply_;
/**
* @dev Total number of tokens in existence
*/
function totalSupply() public view returns (uint256) {
return totalSupply_;
}
/**
* @dev Transfer token for a specified address
* @param _to The address to transfer to.
* @param _value The amount to be transferred.
*/
function transfer(address _to, uint256 _value) public returns (bool) {
require(_to != address(0));
require(_value <= balances[msg.sender]);
balances[msg.sender] = balances[msg.sender].sub(_value);
balances[_to] = balances[_to].add(_value);
emit Transfer(msg.sender, _to, _value);
return true;
}
/**
* @dev Gets the balance of the specified address.
* @param _owner The address to query the the balance of.
* @return An uint256 representing the amount owned by the passed address.
*/
function balanceOf(address _owner) public view returns (uint256) {
return balances[_owner];
}
}
/**
* @title Standard ERC20 token
*
* @dev Implementation of the basic standard token.
* https://github.com/ethereum/EIPs/issues/20
* Based on code by FirstBlood: https://github.com/Firstbloodio/token/blob/master/smart_contract/FirstBloodToken.sol
*/
contract StandardToken is ERC20, BasicToken {
mapping (address => mapping (address => uint256)) internal allowed;
/**
* @dev Transfer tokens from one address to another
* @param _from address The address which you want to send tokens from
* @param _to address The address which you want to transfer to
* @param _value uint256 the amount of tokens to be transferred
*/
function transferFrom(
address _from,
address _to,
uint256 _value
)
public
returns (bool)
{
require(_to != address(0));
require(_value <= balances[_from]);
require(_value <= allowed[_from][msg.sender]);
balances[_from] = balances[_from].sub(_value);
balances[_to] = balances[_to].add(_value);
allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_value);
emit Transfer(_from, _to, _value);
return true;
}
/**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
* Beware that changing an allowance with this method brings the risk that someone may use both the old
* and the new allowance by unfortunate transaction ordering. One possible solution to mitigate this
* race condition is to first reduce the spender's allowance to 0 and set the desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
* @param _spender The address which will spend the funds.
* @param _value The amount of tokens to be spent.
*/
function approve(address _spender, uint256 _value) public returns (bool) {
allowed[msg.sender][_spender] = _value;
emit Approval(msg.sender, _spender, _value);
return true;
}
/**
* @dev Function to check the amount of tokens that an owner allowed to a spender.
* @param _owner address The address which owns the funds.
* @param _spender address The address which will spend the funds.
* @return A uint256 specifying the amount of tokens still available for the spender.
*/
function allowance(
address _owner,
address _spender
)
public
view
returns (uint256)
{
return allowed[_owner][_spender];
}
/**
* @dev Increase the amount of tokens that an owner allowed to a spender.
* approve should be called when allowed[_spender] == 0. To increment
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* @param _spender The address which will spend the funds.
* @param _addedValue The amount of tokens to increase the allowance by.
*/
function increaseApproval(
address _spender,
uint256 _addedValue
)
public
returns (bool)
{
allowed[msg.sender][_spender] = (
allowed[msg.sender][_spender].add(_addedValue));
emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
return true;
}
/**
* @dev Decrease the amount of tokens that an owner allowed to a spender.
* approve should be called when allowed[_spender] == 0. To decrement
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* @param _spender The address which will spend the funds.
* @param _subtractedValue The amount of tokens to decrease the allowance by.
*/
function decreaseApproval(
address _spender,
uint256 _subtractedValue
)
public
returns (bool)
{
uint256 oldValue = allowed[msg.sender][_spender];
if (_subtractedValue > oldValue) {
allowed[msg.sender][_spender] = 0;
} else {
allowed[msg.sender][_spender] = oldValue.sub(_subtractedValue);
}
emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
return true;
}
}
/**
* @title Pausable
* @dev Base contract which allows children to implement an emergency stop mechanism.
*/
contract Pausable is Ownable {
event Pause();
event Unpause();
bool public paused = false;
/**
* @dev Modifier to make a function callable only when the contract is not paused.
*/
modifier whenNotPaused() {
require(!paused);
_;
}
/**
* @dev Modifier to make a function callable only when the contract is paused.
*/
modifier whenPaused() {
require(paused);
_;
}
/**
* @dev called by the owner to pause, triggers stopped state
*/
function pause() onlyOwner whenNotPaused public {
paused = true;
emit Pause();
}
/**
* @dev called by the owner to unpause, returns to normal state
*/
function unpause() onlyOwner whenPaused public {
paused = false;
emit Unpause();
}
}
/**
* @title Pausable token
* @dev StandardToken modified with pausable transfers.
**/
contract PausableToken is StandardToken, Pausable {
function transfer(
address _to,
uint256 _value
)
public
whenNotPaused
returns (bool)
{
return super.transfer(_to, _value);
}
function transferFrom(
address _from,
address _to,
uint256 _value
)
public
whenNotPaused
returns (bool)
{
return super.transferFrom(_from, _to, _value);
}
function approve(
address _spender,
uint256 _value
)
public
whenNotPaused
returns (bool)
{
return super.approve(_spender, _value);
}
function increaseApproval(
address _spender,
uint _addedValue
)
public
whenNotPaused
returns (bool success)
{
return super.increaseApproval(_spender, _addedValue);
}
function decreaseApproval(
address _spender,
uint _subtractedValue
)
public
whenNotPaused
returns (bool success)
{
return super.decreaseApproval(_spender, _subtractedValue);
}
}
/**
* @title Burnable Token
* @dev Token that can be irreversibly burned (destroyed).
*/
contract BurnableToken is BasicToken {
event Burn(address indexed burner, uint256 value);
/**
* @dev Burns a specific amount of tokens.
* @param _value The amount of token to be burned.
*/
function burn(uint256 _value) public {
_burn(msg.sender, _value);
}
function _burn(address _who, uint256 _value) internal {
require(_value <= balances[_who]);
// no need to require value <= totalSupply, since that would imply the
// sender's balance is greater than the totalSupply, which *should* be an assertion failure
balances[_who] = balances[_who].sub(_value);
totalSupply_ = totalSupply_.sub(_value);
emit Burn(_who, _value);
emit Transfer(_who, address(0), _value);
}
}
contract RepublicToken is PausableToken, BurnableToken {
string public constant name = "Republic Token";
string public constant symbol = "REN";
uint8 public constant decimals = 18;
uint256 public constant INITIAL_SUPPLY = 1000000000 * 10**uint256(decimals);
/// @notice The RepublicToken Constructor.
constructor() public {
totalSupply_ = INITIAL_SUPPLY;
balances[msg.sender] = INITIAL_SUPPLY;
}
function transferTokens(address beneficiary, uint256 amount) public onlyOwner returns (bool) {
/* solium-disable error-reason */
require(amount > 0);
balances[owner] = balances[owner].sub(amount);
balances[beneficiary] = balances[beneficiary].add(amount);
emit Transfer(owner, beneficiary, amount);
return true;
}
}
/**
* @notice LinkedList is a library for a circular double linked list.
*/
library LinkedList {
/*
* @notice A permanent NULL node (0x0) in the circular double linked list.
* NULL.next is the head, and NULL.previous is the tail.
*/
address public constant NULL = 0x0;
/**
* @notice A node points to the node before it, and the node after it. If
* node.previous = NULL, then the node is the head of the list. If
* node.next = NULL, then the node is the tail of the list.
*/
struct Node {
bool inList;
address previous;
address next;
}
/**
* @notice LinkedList uses a mapping from address to nodes. Each address
* uniquely identifies a node, and in this way they are used like pointers.
*/
struct List {
mapping (address => Node) list;
}
/**
* @notice Insert a new node before an existing node.
*
* @param self The list being used.
* @param target The existing node in the list.
* @param newNode The next node to insert before the target.
*/
function insertBefore(List storage self, address target, address newNode) internal {
require(!isInList(self, newNode), "already in list");
require(isInList(self, target) || target == NULL, "not in list");
// It is expected that this value is sometimes NULL.
address prev = self.list[target].previous;
self.list[newNode].next = target;
self.list[newNode].previous = prev;
self.list[target].previous = newNode;
self.list[prev].next = newNode;
self.list[newNode].inList = true;
}
/**
* @notice Insert a new node after an existing node.
*
* @param self The list being used.
* @param target The existing node in the list.
* @param newNode The next node to insert after the target.
*/
function insertAfter(List storage self, address target, address newNode) internal {
require(!isInList(self, newNode), "already in list");
require(isInList(self, target) || target == NULL, "not in list");
// It is expected that this value is sometimes NULL.
address n = self.list[target].next;
self.list[newNode].previous = target;
self.list[newNode].next = n;
self.list[target].next = newNode;
self.list[n].previous = newNode;
self.list[newNode].inList = true;
}
/**
* @notice Remove a node from the list, and fix the previous and next
* pointers that are pointing to the removed node. Removing anode that is not
* in the list will do nothing.
*
* @param self The list being using.
* @param node The node in the list to be removed.
*/
function remove(List storage self, address node) internal {
require(isInList(self, node), "not in list");
if (node == NULL) {
return;
}
address p = self.list[node].previous;
address n = self.list[node].next;
self.list[p].next = n;
self.list[n].previous = p;
// Deleting the node should set this value to false, but we set it here for
// explicitness.
self.list[node].inList = false;
delete self.list[node];
}
/**
* @notice Insert a node at the beginning of the list.
*
* @param self The list being used.
* @param node The node to insert at the beginning of the list.
*/
function prepend(List storage self, address node) internal {
// isInList(node) is checked in insertBefore
insertBefore(self, begin(self), node);
}
/**
* @notice Insert a node at the end of the list.
*
* @param self The list being used.
* @param node The node to insert at the end of the list.
*/
function append(List storage self, address node) internal {
// isInList(node) is checked in insertBefore
insertAfter(self, end(self), node);
}
function swap(List storage self, address left, address right) internal {
// isInList(left) and isInList(right) are checked in remove
address previousRight = self.list[right].previous;
remove(self, right);
insertAfter(self, left, right);
remove(self, left);
insertAfter(self, previousRight, left);
}
function isInList(List storage self, address node) internal view returns (bool) {
return self.list[node].inList;
}
/**
* @notice Get the node at the beginning of a double linked list.
*
* @param self The list being used.
*
* @return A address identifying the node at the beginning of the double
* linked list.
*/
function begin(List storage self) internal view returns (address) {
return self.list[NULL].next;
}
/**
* @notice Get the node at the end of a double linked list.
*
* @param self The list being used.
*
* @return A address identifying the node at the end of the double linked
* list.
*/
function end(List storage self) internal view returns (address) {
return self.list[NULL].previous;
}
function next(List storage self, address node) internal view returns (address) {
require(isInList(self, node), "not in list");
return self.list[node].next;
}
function previous(List storage self, address node) internal view returns (address) {
require(isInList(self, node), "not in list");
return self.list[node].previous;
}
}
/// @notice This contract stores data and funds for the DarknodeRegistry
/// contract. The data / fund logic and storage have been separated to improve
/// upgradability.
contract DarknodeRegistryStore is Ownable {
string public VERSION; // Passed in as a constructor parameter.
/// @notice Darknodes are stored in the darknode struct. The owner is the
/// address that registered the darknode, the bond is the amount of REN that
/// was transferred during registration, and the public key is the
/// encryption key that should be used when sending sensitive information to
/// the darknode.
struct Darknode {
// The owner of a Darknode is the address that called the register
// function. The owner is the only address that is allowed to
// deregister the Darknode, unless the Darknode is slashed for
// malicious behavior.
address owner;
// The bond is the amount of REN submitted as a bond by the Darknode.
// This amount is reduced when the Darknode is slashed for malicious
// behavior.
uint256 bond;
// The block number at which the Darknode is considered registered.
uint256 registeredAt;
// The block number at which the Darknode is considered deregistered.
uint256 deregisteredAt;
// The public key used by this Darknode for encrypting sensitive data
// off chain. It is assumed that the Darknode has access to the
// respective private key, and that there is an agreement on the format
// of the public key.
bytes publicKey;
}
/// Registry data.
mapping(address => Darknode) private darknodeRegistry;
LinkedList.List private darknodes;
// RepublicToken.
RepublicToken public ren;
/// @notice The contract constructor.
///
/// @param _VERSION A string defining the contract version.
/// @param _ren The address of the RepublicToken contract.
constructor(
string _VERSION,
RepublicToken _ren
) public {
VERSION = _VERSION;
ren = _ren;
}
/// @notice Instantiates a darknode and appends it to the darknodes
/// linked-list.
///
/// @param _darknodeID The darknode's ID.
/// @param _darknodeOwner The darknode's owner's address
/// @param _bond The darknode's bond value
/// @param _publicKey The darknode's public key
/// @param _registeredAt The time stamp when the darknode is registered.
/// @param _deregisteredAt The time stamp when the darknode is deregistered.
function appendDarknode(
address _darknodeID,
address _darknodeOwner,
uint256 _bond,
bytes _publicKey,
uint256 _registeredAt,
uint256 _deregisteredAt
) external onlyOwner {
Darknode memory darknode = Darknode({
owner: _darknodeOwner,
bond: _bond,
publicKey: _publicKey,
registeredAt: _registeredAt,
deregisteredAt: _deregisteredAt
});
darknodeRegistry[_darknodeID] = darknode;
LinkedList.append(darknodes, _darknodeID);
}
/// @notice Returns the address of the first darknode in the store
function begin() external view onlyOwner returns(address) {
return LinkedList.begin(darknodes);
}
/// @notice Returns the address of the next darknode in the store after the
/// given address.
function next(address darknodeID) external view onlyOwner returns(address) {
return LinkedList.next(darknodes, darknodeID);
}
/// @notice Removes a darknode from the store and transfers its bond to the
/// owner of this contract.
function removeDarknode(address darknodeID) external onlyOwner {
uint256 bond = darknodeRegistry[darknodeID].bond;
delete darknodeRegistry[darknodeID];
LinkedList.remove(darknodes, darknodeID);
require(ren.transfer(owner, bond), "bond transfer failed");
}
/// @notice Updates the bond of the darknode. If the bond is being
/// decreased, the difference is sent to the owner of this contract.
function updateDarknodeBond(address darknodeID, uint256 bond) external onlyOwner {
uint256 previousBond = darknodeRegistry[darknodeID].bond;
darknodeRegistry[darknodeID].bond = bond;
if (previousBond > bond) {
require(ren.transfer(owner, previousBond - bond), "cannot transfer bond");
}
}
/// @notice Updates the deregistration timestamp of a darknode.
function updateDarknodeDeregisteredAt(address darknodeID, uint256 deregisteredAt) external onlyOwner {
darknodeRegistry[darknodeID].deregisteredAt = deregisteredAt;
}
/// @notice Returns the owner of a given darknode.
function darknodeOwner(address darknodeID) external view onlyOwner returns (address) {
return darknodeRegistry[darknodeID].owner;
}
/// @notice Returns the bond of a given darknode.
function darknodeBond(address darknodeID) external view onlyOwner returns (uint256) {
return darknodeRegistry[darknodeID].bond;
}
/// @notice Returns the registration time of a given darknode.
function darknodeRegisteredAt(address darknodeID) external view onlyOwner returns (uint256) {
return darknodeRegistry[darknodeID].registeredAt;
}
/// @notice Returns the deregistration time of a given darknode.
function darknodeDeregisteredAt(address darknodeID) external view onlyOwner returns (uint256) {
return darknodeRegistry[darknodeID].deregisteredAt;
}
/// @notice Returns the encryption public key of a given darknode.
function darknodePublicKey(address darknodeID) external view onlyOwner returns (bytes) {
return darknodeRegistry[darknodeID].publicKey;
}
}
/// @notice DarknodeRegistry is responsible for the registration and
/// deregistration of Darknodes.
contract DarknodeRegistry is Ownable {
string public VERSION; // Passed in as a constructor parameter.
/// @notice Darknode pods are shuffled after a fixed number of blocks.
/// An Epoch stores an epoch hash used as an (insecure) RNG seed, and the
/// blocknumber which restricts when the next epoch can be called.
struct Epoch {
uint256 epochhash;
uint256 blocknumber;
}
uint256 public numDarknodes;
uint256 public numDarknodesNextEpoch;
uint256 public numDarknodesPreviousEpoch;
/// Variables used to parameterize behavior.
uint256 public minimumBond;
uint256 public minimumPodSize;
uint256 public minimumEpochInterval;
address public slasher;
/// When one of the above variables is modified, it is only updated when the
/// next epoch is called. These variables store the values for the next epoch.
uint256 public nextMinimumBond;
uint256 public nextMinimumPodSize;
uint256 public nextMinimumEpochInterval;
address public nextSlasher;
/// The current and previous epoch
Epoch public currentEpoch;
Epoch public previousEpoch;
/// Republic ERC20 token contract used to transfer bonds.
RepublicToken public ren;
/// Darknode Registry Store is the storage contract for darknodes.
DarknodeRegistryStore public store;
/// @notice Emitted when a darknode is registered.
/// @param _darknodeID The darknode ID that was registered.
/// @param _bond The amount of REN that was transferred as bond.
event LogDarknodeRegistered(address _darknodeID, uint256 _bond);
/// @notice Emitted when a darknode is deregistered.
/// @param _darknodeID The darknode ID that was deregistered.
event LogDarknodeDeregistered(address _darknodeID);
/// @notice Emitted when a refund has been made.
/// @param _owner The address that was refunded.
/// @param _amount The amount of REN that was refunded.
event LogDarknodeOwnerRefunded(address _owner, uint256 _amount);
/// @notice Emitted when a new epoch has begun.
event LogNewEpoch();
/// @notice Emitted when a constructor parameter has been updated.
event LogMinimumBondUpdated(uint256 previousMinimumBond, uint256 nextMinimumBond);
event LogMinimumPodSizeUpdated(uint256 previousMinimumPodSize, uint256 nextMinimumPodSize);
event LogMinimumEpochIntervalUpdated(uint256 previousMinimumEpochInterval, uint256 nextMinimumEpochInterval);
event LogSlasherUpdated(address previousSlasher, address nextSlasher);
/// @notice Only allow the owner that registered the darknode to pass.
modifier onlyDarknodeOwner(address _darknodeID) {
require(store.darknodeOwner(_darknodeID) == msg.sender, "must be darknode owner");
_;
}
/// @notice Only allow unregistered darknodes.
modifier onlyRefunded(address _darknodeID) {
require(isRefunded(_darknodeID), "must be refunded or never registered");
_;
}
/// @notice Only allow refundable darknodes.
modifier onlyRefundable(address _darknodeID) {
require(isRefundable(_darknodeID), "must be deregistered for at least one epoch");
_;
}
/// @notice Only allowed registered nodes without a pending deregistration to
/// deregister
modifier onlyDeregisterable(address _darknodeID) {
require(isDeregisterable(_darknodeID), "must be deregisterable");
_;
}
/// @notice Only allow the Slasher contract.
modifier onlySlasher() {
require(slasher == msg.sender, "must be slasher");
_;
}
/// @notice The contract constructor.
///
/// @param _VERSION A string defining the contract version.
/// @param _renAddress The address of the RepublicToken contract.
/// @param _storeAddress The address of the DarknodeRegistryStore contract.
/// @param _minimumBond The minimum bond amount that can be submitted by a
/// Darknode.
/// @param _minimumPodSize The minimum size of a Darknode pod.
/// @param _minimumEpochInterval The minimum number of blocks between
/// epochs.
constructor(
string _VERSION,
RepublicToken _renAddress,
DarknodeRegistryStore _storeAddress,
uint256 _minimumBond,
uint256 _minimumPodSize,
uint256 _minimumEpochInterval
) public {
VERSION = _VERSION;
store = _storeAddress;
ren = _renAddress;
minimumBond = _minimumBond;
nextMinimumBond = minimumBond;
minimumPodSize = _minimumPodSize;
nextMinimumPodSize = minimumPodSize;
minimumEpochInterval = _minimumEpochInterval;
nextMinimumEpochInterval = minimumEpochInterval;
currentEpoch = Epoch({
epochhash: uint256(blockhash(block.number - 1)),
blocknumber: block.number
});
numDarknodes = 0;
numDarknodesNextEpoch = 0;
numDarknodesPreviousEpoch = 0;
}
/// @notice Register a darknode and transfer the bond to this contract. The
/// caller must provide a public encryption key for the darknode as well as
/// a bond in REN. The bond must be provided as an ERC20 allowance. The dark
/// node will remain pending registration until the next epoch. Only after
/// this period can the darknode be deregistered. The caller of this method
/// will be stored as the owner of the darknode.
///
/// @param _darknodeID The darknode ID that will be registered.
/// @param _publicKey The public key of the darknode. It is stored to allow
/// other darknodes and traders to encrypt messages to the trader.
/// @param _bond The bond that will be paid. It must be greater than, or
/// equal to, the minimum bond.
function register(address _darknodeID, bytes _publicKey, uint256 _bond) external onlyRefunded(_darknodeID) {
// REN allowance
require(_bond >= minimumBond, "insufficient bond");
// require(ren.allowance(msg.sender, address(this)) >= _bond);
require(ren.transferFrom(msg.sender, address(this), _bond), "bond transfer failed");
ren.transfer(address(store), _bond);
// Flag this darknode for registration
store.appendDarknode(
_darknodeID,
msg.sender,
_bond,
_publicKey,
currentEpoch.blocknumber + minimumEpochInterval,
0
);
numDarknodesNextEpoch += 1;
// Emit an event.
emit LogDarknodeRegistered(_darknodeID, _bond);
}
/// @notice Deregister a darknode. The darknode will not be deregistered
/// until the end of the epoch. After another epoch, the bond can be
/// refunded by calling the refund method.
/// @param _darknodeID The darknode ID that will be deregistered. The caller
/// of this method store.darknodeRegisteredAt(_darknodeID) must be
// the owner of this darknode.
function deregister(address _darknodeID) external onlyDeregisterable(_darknodeID) onlyDarknodeOwner(_darknodeID) {
// Flag the darknode for deregistration
store.updateDarknodeDeregisteredAt(_darknodeID, currentEpoch.blocknumber + minimumEpochInterval);
numDarknodesNextEpoch -= 1;
// Emit an event
emit LogDarknodeDeregistered(_darknodeID);
}
/// @notice Progress the epoch if it is possible to do so. This captures
/// the current timestamp and current blockhash and overrides the current
/// epoch.
function epoch() external {
if (previousEpoch.blocknumber == 0) {
// The first epoch must be called by the owner of the contract
require(msg.sender == owner, "not authorized (first epochs)");
}
// Require that the epoch interval has passed
require(block.number >= currentEpoch.blocknumber + minimumEpochInterval, "epoch interval has not passed");
uint256 epochhash = uint256(blockhash(block.number - 1));
// Update the epoch hash and timestamp
previousEpoch = currentEpoch;
currentEpoch = Epoch({
epochhash: epochhash,
blocknumber: block.number
});
// Update the registry information
numDarknodesPreviousEpoch = numDarknodes;
numDarknodes = numDarknodesNextEpoch;
// If any update functions have been called, update the values now
if (nextMinimumBond != minimumBond) {
minimumBond = nextMinimumBond;
emit LogMinimumBondUpdated(minimumBond, nextMinimumBond);
}
if (nextMinimumPodSize != minimumPodSize) {
minimumPodSize = nextMinimumPodSize;
emit LogMinimumPodSizeUpdated(minimumPodSize, nextMinimumPodSize);
}
if (nextMinimumEpochInterval != minimumEpochInterval) {
minimumEpochInterval = nextMinimumEpochInterval;
emit LogMinimumEpochIntervalUpdated(minimumEpochInterval, nextMinimumEpochInterval);
}
if (nextSlasher != slasher) {
slasher = nextSlasher;
emit LogSlasherUpdated(slasher, nextSlasher);
}
// Emit an event
emit LogNewEpoch();
}
/// @notice Allows the contract owner to transfer ownership of the
/// DarknodeRegistryStore.
/// @param _newOwner The address to transfer the ownership to.
function transferStoreOwnership(address _newOwner) external onlyOwner {
store.transferOwnership(_newOwner);
}
/// @notice Allows the contract owner to update the minimum bond.
/// @param _nextMinimumBond The minimum bond amount that can be submitted by
/// a darknode.
function updateMinimumBond(uint256 _nextMinimumBond) external onlyOwner {
// Will be updated next epoch
nextMinimumBond = _nextMinimumBond;
}
/// @notice Allows the contract owner to update the minimum pod size.
/// @param _nextMinimumPodSize The minimum size of a pod.
function updateMinimumPodSize(uint256 _nextMinimumPodSize) external onlyOwner {
// Will be updated next epoch
nextMinimumPodSize = _nextMinimumPodSize;
}
/// @notice Allows the contract owner to update the minimum epoch interval.
/// @param _nextMinimumEpochInterval The minimum number of blocks between epochs.
function updateMinimumEpochInterval(uint256 _nextMinimumEpochInterval) external onlyOwner {
// Will be updated next epoch
nextMinimumEpochInterval = _nextMinimumEpochInterval;
}
/// @notice Allow the contract owner to update the DarknodeSlasher contract
/// address.
/// @param _slasher The new slasher address.
function updateSlasher(address _slasher) external onlyOwner {
nextSlasher = _slasher;
}
/// @notice Allow the DarknodeSlasher contract to slash half of a darknode's
/// bond and deregister it. The bond is distributed as follows:
/// 1/2 is kept by the guilty prover
/// 1/8 is rewarded to the first challenger
/// 1/8 is rewarded to the second challenger
/// 1/4 becomes unassigned
/// @param _prover The guilty prover whose bond is being slashed
/// @param _challenger1 The first of the two darknodes who submitted the challenge
/// @param _challenger2 The second of the two darknodes who submitted the challenge
function slash(address _prover, address _challenger1, address _challenger2)
external
onlySlasher
{
uint256 penalty = store.darknodeBond(_prover) / 2;
uint256 reward = penalty / 4;
// Slash the bond of the failed prover in half
store.updateDarknodeBond(_prover, penalty);
// If the darknode has not been deregistered then deregister it
if (isDeregisterable(_prover)) {
store.updateDarknodeDeregisteredAt(_prover, currentEpoch.blocknumber + minimumEpochInterval);
numDarknodesNextEpoch -= 1;
emit LogDarknodeDeregistered(_prover);
}
// Reward the challengers with less than the penalty so that it is not
// worth challenging yourself
ren.transfer(store.darknodeOwner(_challenger1), reward);
ren.transfer(store.darknodeOwner(_challenger2), reward);
}
/// @notice Refund the bond of a deregistered darknode. This will make the
/// darknode available for registration again. Anyone can call this function
/// but the bond will always be refunded to the darknode owner.
///
/// @param _darknodeID The darknode ID that will be refunded. The caller
/// of this method must be the owner of this darknode.
function refund(address _darknodeID) external onlyRefundable(_darknodeID) {
address darknodeOwner = store.darknodeOwner(_darknodeID);
// Remember the bond amount
uint256 amount = store.darknodeBond(_darknodeID);
// Erase the darknode from the registry
store.removeDarknode(_darknodeID);
// Refund the owner by transferring REN
ren.transfer(darknodeOwner, amount);
// Emit an event.
emit LogDarknodeOwnerRefunded(darknodeOwner, amount);
}
/// @notice Retrieves the address of the account that registered a darknode.
/// @param _darknodeID The ID of the darknode to retrieve the owner for.
function getDarknodeOwner(address _darknodeID) external view returns (address) {
return store.darknodeOwner(_darknodeID);
}
/// @notice Retrieves the bond amount of a darknode in 10^-18 REN.
/// @param _darknodeID The ID of the darknode to retrieve the bond for.
function getDarknodeBond(address _darknodeID) external view returns (uint256) {
return store.darknodeBond(_darknodeID);
}
/// @notice Retrieves the encryption public key of the darknode.
/// @param _darknodeID The ID of the darknode to retrieve the public key for.
function getDarknodePublicKey(address _darknodeID) external view returns (bytes) {
return store.darknodePublicKey(_darknodeID);
}
/// @notice Retrieves a list of darknodes which are registered for the
/// current epoch.
/// @param _start A darknode ID used as an offset for the list. If _start is
/// 0x0, the first dark node will be used. _start won't be
/// included it is not registered for the epoch.
/// @param _count The number of darknodes to retrieve starting from _start.
/// If _count is 0, all of the darknodes from _start are
/// retrieved. If _count is more than the remaining number of
/// registered darknodes, the rest of the list will contain
/// 0x0s.
function getDarknodes(address _start, uint256 _count) external view returns (address[]) {
uint256 count = _count;
if (count == 0) {
count = numDarknodes;
}
return getDarknodesFromEpochs(_start, count, false);
}
/// @notice Retrieves a list of darknodes which were registered for the
/// previous epoch. See `getDarknodes` for the parameter documentation.
function getPreviousDarknodes(address _start, uint256 _count) external view returns (address[]) {
uint256 count = _count;
if (count == 0) {
count = numDarknodesPreviousEpoch;
}
return getDarknodesFromEpochs(_start, count, true);
}
/// @notice Returns whether a darknode is scheduled to become registered
/// at next epoch.
/// @param _darknodeID The ID of the darknode to return
function isPendingRegistration(address _darknodeID) external view returns (bool) {
uint256 registeredAt = store.darknodeRegisteredAt(_darknodeID);
return registeredAt != 0 && registeredAt > currentEpoch.blocknumber;
}
/// @notice Returns if a darknode is in the pending deregistered state. In
/// this state a darknode is still considered registered.
function isPendingDeregistration(address _darknodeID) external view returns (bool) {
uint256 deregisteredAt = store.darknodeDeregisteredAt(_darknodeID);
return deregisteredAt != 0 && deregisteredAt > currentEpoch.blocknumber;
}
/// @notice Returns if a darknode is in the deregistered state.
function isDeregistered(address _darknodeID) public view returns (bool) {
uint256 deregisteredAt = store.darknodeDeregisteredAt(_darknodeID);
return deregisteredAt != 0 && deregisteredAt <= currentEpoch.blocknumber;
}
/// @notice Returns if a darknode can be deregistered. This is true if the
/// darknodes is in the registered state and has not attempted to
/// deregister yet.
function isDeregisterable(address _darknodeID) public view returns (bool) {
uint256 deregisteredAt = store.darknodeDeregisteredAt(_darknodeID);
// The Darknode is currently in the registered state and has not been
// transitioned to the pending deregistration, or deregistered, state
return isRegistered(_darknodeID) && deregisteredAt == 0;
}
/// @notice Returns if a darknode is in the refunded state. This is true
/// for darknodes that have never been registered, or darknodes that have
/// been deregistered and refunded.
function isRefunded(address _darknodeID) public view returns (bool) {
uint256 registeredAt = store.darknodeRegisteredAt(_darknodeID);
uint256 deregisteredAt = store.darknodeDeregisteredAt(_darknodeID);
return registeredAt == 0 && deregisteredAt == 0;
}
/// @notice Returns if a darknode is refundable. This is true for darknodes
/// that have been in the deregistered state for one full epoch.
function isRefundable(address _darknodeID) public view returns (bool) {
return isDeregistered(_darknodeID) && store.darknodeDeregisteredAt(_darknodeID) <= previousEpoch.blocknumber;
}
/// @notice Returns if a darknode is in the registered state.
function isRegistered(address _darknodeID) public view returns (bool) {
return isRegisteredInEpoch(_darknodeID, currentEpoch);
}
/// @notice Returns if a darknode was in the registered state last epoch.
function isRegisteredInPreviousEpoch(address _darknodeID) public view returns (bool) {
return isRegisteredInEpoch(_darknodeID, previousEpoch);
}
/// @notice Returns if a darknode was in the registered state for a given
/// epoch.
/// @param _darknodeID The ID of the darknode
/// @param _epoch One of currentEpoch, previousEpoch
function isRegisteredInEpoch(address _darknodeID, Epoch _epoch) private view returns (bool) {
uint256 registeredAt = store.darknodeRegisteredAt(_darknodeID);
uint256 deregisteredAt = store.darknodeDeregisteredAt(_darknodeID);
bool registered = registeredAt != 0 && registeredAt <= _epoch.blocknumber;
bool notDeregistered = deregisteredAt == 0 || deregisteredAt > _epoch.blocknumber;
// The Darknode has been registered and has not yet been deregistered,
// although it might be pending deregistration
return registered && notDeregistered;
}
/// @notice Returns a list of darknodes registered for either the current
/// or the previous epoch. See `getDarknodes` for documentation on the
/// parameters `_start` and `_count`.
/// @param _usePreviousEpoch If true, use the previous epoch, otherwise use
/// the current epoch.
function getDarknodesFromEpochs(address _start, uint256 _count, bool _usePreviousEpoch) private view returns (address[]) {
uint256 count = _count;
if (count == 0) {
count = numDarknodes;
}
address[] memory nodes = new address[](count);
// Begin with the first node in the list
uint256 n = 0;
address next = _start;
if (next == 0x0) {
next = store.begin();
}
// Iterate until all registered Darknodes have been collected
while (n < count) {
if (next == 0x0) {
break;
}
// Only include Darknodes that are currently registered
bool includeNext;
if (_usePreviousEpoch) {
includeNext = isRegisteredInPreviousEpoch(next);
} else {
includeNext = isRegistered(next);
}
if (!includeNext) {
next = store.next(next);
continue;
}
nodes[n] = next;
next = store.next(next);
n += 1;
}
return nodes;
}
}
/**
* @title Math
* @dev Assorted math operations
*/
library Math {
function max64(uint64 a, uint64 b) internal pure returns (uint64) {
return a >= b ? a : b;
}
function min64(uint64 a, uint64 b) internal pure returns (uint64) {
return a < b ? a : b;
}
function max256(uint256 a, uint256 b) internal pure returns (uint256) {
return a >= b ? a : b;
}
function min256(uint256 a, uint256 b) internal pure returns (uint256) {
return a < b ? a : b;
}
}
/// @notice Implements safeTransfer, safeTransferFrom and
/// safeApprove for CompatibleERC20.
///
/// See https://github.com/ethereum/solidity/issues/4116
///
/// This library allows interacting with ERC20 tokens that implement any of
/// these interfaces:
///
/// (1) transfer returns true on success, false on failure
/// (2) transfer returns true on success, reverts on failure
/// (3) transfer returns nothing on success, reverts on failure
///
/// Additionally, safeTransferFromWithFees will return the final token
/// value received after accounting for token fees.
library CompatibleERC20Functions {
using SafeMath for uint256;
/// @notice Calls transfer on the token and reverts if the call fails.
function safeTransfer(address token, address to, uint256 amount) internal {
CompatibleERC20(token).transfer(to, amount);
require(previousReturnValue(), "transfer failed");
}
/// @notice Calls transferFrom on the token and reverts if the call fails.
function safeTransferFrom(address token, address from, address to, uint256 amount) internal {
CompatibleERC20(token).transferFrom(from, to, amount);
require(previousReturnValue(), "transferFrom failed");
}
/// @notice Calls approve on the token and reverts if the call fails.
function safeApprove(address token, address spender, uint256 amount) internal {
CompatibleERC20(token).approve(spender, amount);
require(previousReturnValue(), "approve failed");
}
/// @notice Calls transferFrom on the token, reverts if the call fails and
/// returns the value transferred after fees.
function safeTransferFromWithFees(address token, address from, address to, uint256 amount) internal returns (uint256) {
uint256 balancesBefore = CompatibleERC20(token).balanceOf(to);
CompatibleERC20(token).transferFrom(from, to, amount);
require(previousReturnValue(), "transferFrom failed");
uint256 balancesAfter = CompatibleERC20(token).balanceOf(to);
return Math.min256(amount, balancesAfter.sub(balancesBefore));
}
/// @notice Checks the return value of the previous function. Returns true
/// if the previous function returned 32 non-zero bytes or returned zero
/// bytes.
function previousReturnValue() private pure returns (bool)
{
uint256 returnData = 0;
assembly { /* solium-disable-line security/no-inline-assembly */
// Switch on the number of bytes returned by the previous call
switch returndatasize
// 0 bytes: ERC20 of type (3), did not throw
case 0 {
returnData := 1
}
// 32 bytes: ERC20 of types (1) or (2)
case 32 {
// Copy the return data into scratch space
returndatacopy(0x0, 0x0, 32)
// Load the return data into returnData
returnData := mload(0x0)
}
// Other return size: return false
default { }
}
return returnData != 0;
}
}
/// @notice ERC20 interface which doesn't specify the return type for transfer,
/// transferFrom and approve.
interface CompatibleERC20 {
// Modified to not return boolean
function transfer(address to, uint256 value) external;
function transferFrom(address from, address to, uint256 value) external;
function approve(address spender, uint256 value) external;
// Not modifier
function totalSupply() external view returns (uint256);
function balanceOf(address who) external view returns (uint256);
function allowance(address owner, address spender) external view returns (uint256);
event Transfer(address indexed from, address indexed to, uint256 value);
event Approval(address indexed owner, address indexed spender, uint256 value);
}
/// @notice The DarknodeRewardVault contract is responsible for holding fees
/// for darknodes for settling orders. Fees can be withdrawn to the address of
/// the darknode's operator. Fees can be in ETH or in ERC20 tokens.
/// Docs: https://github.com/republicprotocol/republic-sol/blob/master/docs/02-darknode-reward-vault.md
contract DarknodeRewardVault is Ownable {
using SafeMath for uint256;
using CompatibleERC20Functions for CompatibleERC20;
string public VERSION; // Passed in as a constructor parameter.
/// @notice The special address for Ether.
address constant public ETHEREUM = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;
DarknodeRegistry public darknodeRegistry;
mapping(address => mapping(address => uint256)) public darknodeBalances;
event LogDarknodeRegistryUpdated(DarknodeRegistry previousDarknodeRegistry, DarknodeRegistry nextDarknodeRegistry);
/// @notice The contract constructor.
///
/// @param _VERSION A string defining the contract version.
/// @param _darknodeRegistry The DarknodeRegistry contract that is used by
/// the vault to lookup Darknode owners.
constructor(string _VERSION, DarknodeRegistry _darknodeRegistry) public {
VERSION = _VERSION;
darknodeRegistry = _darknodeRegistry;
}
function updateDarknodeRegistry(DarknodeRegistry _newDarknodeRegistry) public onlyOwner {
emit LogDarknodeRegistryUpdated(darknodeRegistry, _newDarknodeRegistry);
darknodeRegistry = _newDarknodeRegistry;
}
/// @notice Deposit fees into the vault for a Darknode. The Darknode
/// registration is not checked (to reduce gas fees); the caller must be
/// careful not to call this function for a Darknode that is not registered
/// otherwise any fees deposited to that Darknode can be withdrawn by a
/// malicious adversary (by registering the Darknode before the honest
/// party and claiming ownership).
///
/// @param _darknode The address of the Darknode that will receive the
/// fees.
/// @param _token The address of the ERC20 token being used to pay the fee.
/// A special address is used for Ether.
/// @param _value The amount of fees in the smallest unit of the token.
function deposit(address _darknode, ERC20 _token, uint256 _value) public payable {
uint256 receivedValue = _value;
if (address(_token) == ETHEREUM) {
require(msg.value == _value, "mismatched ether value");
} else {
require(msg.value == 0, "unexpected ether value");
receivedValue = CompatibleERC20(_token).safeTransferFromWithFees(msg.sender, address(this), _value);
}
darknodeBalances[_darknode][_token] = darknodeBalances[_darknode][_token].add(receivedValue);
}
/// @notice Withdraw fees earned by a Darknode. The fees will be sent to
/// the owner of the Darknode. If a Darknode is not registered the fees
/// cannot be withdrawn.
///
/// @param _darknode The address of the Darknode whose fees are being
/// withdrawn. The owner of this Darknode will receive the fees.
/// @param _token The address of the ERC20 token to withdraw.
function withdraw(address _darknode, ERC20 _token) public {
address darknodeOwner = darknodeRegistry.getDarknodeOwner(address(_darknode));
require(darknodeOwner != 0x0, "invalid darknode owner");
uint256 value = darknodeBalances[_darknode][_token];
darknodeBalances[_darknode][_token] = 0;
if (address(_token) == ETHEREUM) {
darknodeOwner.transfer(value);
} else {
CompatibleERC20(_token).safeTransfer(darknodeOwner, value);
}
}
}
/// @notice The BrokerVerifier interface defines the functions that a settlement
/// layer's broker verifier contract must implement.
interface BrokerVerifier {
/// @notice The function signature that will be called when a trader opens
/// an order.
///
/// @param _trader The trader requesting the withdrawal.
/// @param _signature The 65-byte signature from the broker.
/// @param _orderID The 32-byte order ID.
function verifyOpenSignature(
address _trader,
bytes _signature,
bytes32 _orderID
) external returns (bool);
}
/// @notice The Settlement interface defines the functions that a settlement
/// layer must implement.
/// Docs: https://github.com/republicprotocol/republic-sol/blob/nightly/docs/05-settlement.md
interface Settlement {
function submitOrder(
bytes _details,
uint64 _settlementID,
uint64 _tokens,
uint256 _price,
uint256 _volume,
uint256 _minimumVolume
) external;
function submissionGasPriceLimit() external view returns (uint256);
function settle(
bytes32 _buyID,
bytes32 _sellID
) external;
/// @notice orderStatus should return the status of the order, which should
/// be:
/// 0 - Order not seen before
/// 1 - Order details submitted
/// >1 - Order settled, or settlement no longer possible
function orderStatus(bytes32 _orderID) external view returns (uint8);
}
/// @notice SettlementRegistry allows a Settlement layer to register the
/// contracts used for match settlement and for broker signature verification.
contract SettlementRegistry is Ownable {
string public VERSION; // Passed in as a constructor parameter.
struct SettlementDetails {
bool registered;
Settlement settlementContract;
BrokerVerifier brokerVerifierContract;
}
// Settlement IDs are 64-bit unsigned numbers
mapping(uint64 => SettlementDetails) public settlementDetails;
// Events
event LogSettlementRegistered(uint64 settlementID, Settlement settlementContract, BrokerVerifier brokerVerifierContract);
event LogSettlementUpdated(uint64 settlementID, Settlement settlementContract, BrokerVerifier brokerVerifierContract);
event LogSettlementDeregistered(uint64 settlementID);
/// @notice The contract constructor.
///
/// @param _VERSION A string defining the contract version.
constructor(string _VERSION) public {
VERSION = _VERSION;
}
/// @notice Returns the settlement contract of a settlement layer.
function settlementRegistration(uint64 _settlementID) external view returns (bool) {
return settlementDetails[_settlementID].registered;
}
/// @notice Returns the settlement contract of a settlement layer.
function settlementContract(uint64 _settlementID) external view returns (Settlement) {
return settlementDetails[_settlementID].settlementContract;
}
/// @notice Returns the broker verifier contract of a settlement layer.
function brokerVerifierContract(uint64 _settlementID) external view returns (BrokerVerifier) {
return settlementDetails[_settlementID].brokerVerifierContract;
}
/// @param _settlementID A unique 64-bit settlement identifier.
/// @param _settlementContract The address to use for settling matches.
/// @param _brokerVerifierContract The decimals to use for verifying
/// broker signatures.
function registerSettlement(uint64 _settlementID, Settlement _settlementContract, BrokerVerifier _brokerVerifierContract) public onlyOwner {
bool alreadyRegistered = settlementDetails[_settlementID].registered;
settlementDetails[_settlementID] = SettlementDetails({
registered: true,
settlementContract: _settlementContract,
brokerVerifierContract: _brokerVerifierContract
});
if (alreadyRegistered) {
emit LogSettlementUpdated(_settlementID, _settlementContract, _brokerVerifierContract);
} else {
emit LogSettlementRegistered(_settlementID, _settlementContract, _brokerVerifierContract);
}
}
/// @notice Deregisteres a settlement layer, clearing the details.
/// @param _settlementID The unique 64-bit settlement identifier.
function deregisterSettlement(uint64 _settlementID) external onlyOwner {
require(settlementDetails[_settlementID].registered, "not registered");
delete settlementDetails[_settlementID];
emit LogSettlementDeregistered(_settlementID);
}
}
/**
* @title Eliptic curve signature operations
* @dev Based on https://gist.github.com/axic/5b33912c6f61ae6fd96d6c4a47afde6d
* TODO Remove this library once solidity supports passing a signature to ecrecover.
* See https://github.com/ethereum/solidity/issues/864
*/
library ECRecovery {
/**
* @dev Recover signer address from a message by using their signature
* @param hash bytes32 message, the hash is the signed message. What is recovered is the signer address.
* @param sig bytes signature, the signature is generated using web3.eth.sign()
*/
function recover(bytes32 hash, bytes sig)
internal
pure
returns (address)
{
bytes32 r;
bytes32 s;
uint8 v;
// Check the signature length
if (sig.length != 65) {
return (address(0));
}
// Divide the signature in r, s and v variables
// ecrecover takes the signature parameters, and the only way to get them
// currently is to use assembly.
// solium-disable-next-line security/no-inline-assembly
assembly {
r := mload(add(sig, 32))
s := mload(add(sig, 64))
v := byte(0, mload(add(sig, 96)))
}
// Version of signature should be 27 or 28, but 0 and 1 are also possible versions
if (v < 27) {
v += 27;
}
// If the version is correct return the signer address
if (v != 27 && v != 28) {
return (address(0));
} else {
// solium-disable-next-line arg-overflow
return ecrecover(hash, v, r, s);
}
}
/**
* toEthSignedMessageHash
* @dev prefix a bytes32 value with "\x19Ethereum Signed Message:"
* and hash the result
*/
function toEthSignedMessageHash(bytes32 hash)
internal
pure
returns (bytes32)
{
// 32 is the length in bytes of hash,
// enforced by the type signature above
return keccak256(
abi.encodePacked("\x19Ethereum Signed Message:\n32", hash)
);
}
}
library Utils {
/**
* @notice Converts a number to its string/bytes representation
*
* @param _v the uint to convert
*/
function uintToBytes(uint256 _v) internal pure returns (bytes) {
uint256 v = _v;
if (v == 0) {
return "0";
}
uint256 digits = 0;
uint256 v2 = v;
while (v2 > 0) {
v2 /= 10;
digits += 1;
}
bytes memory result = new bytes(digits);
for (uint256 i = 0; i < digits; i++) {
result[digits - i - 1] = bytes1((v % 10) + 48);
v /= 10;
}
return result;
}
/**
* @notice Retrieves the address from a signature
*
* @param _hash the message that was signed (any length of bytes)
* @param _signature the signature (65 bytes)
*/
function addr(bytes _hash, bytes _signature) internal pure returns (address) {
bytes memory prefix = "\x19Ethereum Signed Message:\n";
bytes memory encoded = abi.encodePacked(prefix, uintToBytes(_hash.length), _hash);
bytes32 prefixedHash = keccak256(encoded);
return ECRecovery.recover(prefixedHash, _signature);
}
}
/// @notice The Orderbook contract stores the state and priority of orders and
/// allows the Darknodes to easily reach consensus. Eventually, this contract
/// will only store a subset of order states, such as cancellation, to improve
/// the throughput of orders.
contract Orderbook is Ownable {
string public VERSION; // Passed in as a constructor parameter.
/// @notice OrderState enumerates the possible states of an order. All
/// orders default to the Undefined state.
enum OrderState {Undefined, Open, Confirmed, Canceled}
/// @notice Order stores a subset of the public data associated with an order.
struct Order {
OrderState state; // State of the order
address trader; // Trader that owns the order
address confirmer; // Darknode that confirmed the order in a match
uint64 settlementID; // The settlement that signed the order opening
uint256 priority; // Logical time priority of this order
uint256 blockNumber; // Block number of the most recent state change
bytes32 matchedOrder; // Order confirmed in a match with this order
}
DarknodeRegistry public darknodeRegistry;
SettlementRegistry public settlementRegistry;
bytes32[] private orderbook;
// Order details are exposed through directly accessing this mapping, or
// through the getter functions below for each of the order's fields.
mapping(bytes32 => Order) public orders;
event LogFeeUpdated(uint256 previousFee, uint256 nextFee);
event LogDarknodeRegistryUpdated(DarknodeRegistry previousDarknodeRegistry, DarknodeRegistry nextDarknodeRegistry);
/// @notice Only allow registered dark nodes.
modifier onlyDarknode(address _sender) {
require(darknodeRegistry.isRegistered(address(_sender)), "must be registered darknode");
_;
}
/// @notice The contract constructor.
///
/// @param _VERSION A string defining the contract version.
/// @param _darknodeRegistry The address of the DarknodeRegistry contract.
/// @param _settlementRegistry The address of the SettlementRegistry
/// contract.
constructor(
string _VERSION,
DarknodeRegistry _darknodeRegistry,
SettlementRegistry _settlementRegistry
) public {
VERSION = _VERSION;
darknodeRegistry = _darknodeRegistry;
settlementRegistry = _settlementRegistry;
}
/// @notice Allows the owner to update the address of the DarknodeRegistry
/// contract.
function updateDarknodeRegistry(DarknodeRegistry _newDarknodeRegistry) external onlyOwner {
emit LogDarknodeRegistryUpdated(darknodeRegistry, _newDarknodeRegistry);
darknodeRegistry = _newDarknodeRegistry;
}
/// @notice Open an order in the orderbook. The order must be in the
/// Undefined state.
///
/// @param _signature Signature of the message that defines the trader. The
/// message is "Republic Protocol: open: {orderId}".
/// @param _orderID The hash of the order.
function openOrder(uint64 _settlementID, bytes _signature, bytes32 _orderID) external {
require(orders[_orderID].state == OrderState.Undefined, "invalid order status");
address trader = msg.sender;
// Verify the order signature
require(settlementRegistry.settlementRegistration(_settlementID), "settlement not registered");
BrokerVerifier brokerVerifier = settlementRegistry.brokerVerifierContract(_settlementID);
require(brokerVerifier.verifyOpenSignature(trader, _signature, _orderID), "invalid broker signature");
orders[_orderID] = Order({
state: OrderState.Open,
trader: trader,
confirmer: 0x0,
settlementID: _settlementID,
priority: orderbook.length + 1,
blockNumber: block.number,
matchedOrder: 0x0
});
orderbook.push(_orderID);
}
/// @notice Confirm an order match between orders. The confirmer must be a
/// registered Darknode and the orders must be in the Open state. A
/// malicious confirmation by a Darknode will result in a bond slash of the
/// Darknode.
///
/// @param _orderID The hash of the order.
/// @param _matchedOrderID The hashes of the matching order.
function confirmOrder(bytes32 _orderID, bytes32 _matchedOrderID) external onlyDarknode(msg.sender) {
require(orders[_orderID].state == OrderState.Open, "invalid order status");
require(orders[_matchedOrderID].state == OrderState.Open, "invalid order status");
orders[_orderID].state = OrderState.Confirmed;
orders[_orderID].confirmer = msg.sender;
orders[_orderID].matchedOrder = _matchedOrderID;
orders[_orderID].blockNumber = block.number;
orders[_matchedOrderID].state = OrderState.Confirmed;
orders[_matchedOrderID].confirmer = msg.sender;
orders[_matchedOrderID].matchedOrder = _orderID;
orders[_matchedOrderID].blockNumber = block.number;
}
/// @notice Cancel an open order in the orderbook. An order can be cancelled
/// by the trader who opened the order, or by the broker verifier contract.
/// This allows the settlement layer to implement their own logic for
/// cancelling orders without trader interaction (e.g. to ban a trader from
/// a specific darkpool, or to use multiple order-matching platforms)
///
/// @param _orderID The hash of the order.
function cancelOrder(bytes32 _orderID) external {
require(orders[_orderID].state == OrderState.Open, "invalid order state");
// Require the msg.sender to be the trader or the broker verifier
address brokerVerifier = address(settlementRegistry.brokerVerifierContract(orders[_orderID].settlementID));
require(msg.sender == orders[_orderID].trader || msg.sender == brokerVerifier, "not authorized");
orders[_orderID].state = OrderState.Canceled;
orders[_orderID].blockNumber = block.number;
}
/// @notice returns status of the given orderID.
function orderState(bytes32 _orderID) external view returns (OrderState) {
return orders[_orderID].state;
}
/// @notice returns a list of matched orders to the given orderID.
function orderMatch(bytes32 _orderID) external view returns (bytes32) {
return orders[_orderID].matchedOrder;
}
/// @notice returns the priority of the given orderID.
/// The priority is the index of the order in the orderbook.
function orderPriority(bytes32 _orderID) external view returns (uint256) {
return orders[_orderID].priority;
}
/// @notice returns the trader of the given orderID.
/// Trader is the one who signs the message and does the actual trading.
function orderTrader(bytes32 _orderID) external view returns (address) {
return orders[_orderID].trader;
}
/// @notice returns the darknode address which confirms the given orderID.
function orderConfirmer(bytes32 _orderID) external view returns (address) {
return orders[_orderID].confirmer;
}
/// @notice returns the block number when the order being last modified.
function orderBlockNumber(bytes32 _orderID) external view returns (uint256) {
return orders[_orderID].blockNumber;
}
/// @notice returns the block depth of the orderId
function orderDepth(bytes32 _orderID) external view returns (uint256) {
if (orders[_orderID].blockNumber == 0) {
return 0;
}
return (block.number - orders[_orderID].blockNumber);
}
/// @notice returns the number of orders in the orderbook
function ordersCount() external view returns (uint256) {
return orderbook.length;
}
/// @notice returns order details of the orders starting from the offset.
function getOrders(uint256 _offset, uint256 _limit) external view returns (bytes32[], address[], uint8[]) {
if (_offset >= orderbook.length) {
return;
}
// If the provided limit is more than the number of orders after the offset,
// decrease the limit
uint256 limit = _limit;
if (_offset + limit > orderbook.length) {
limit = orderbook.length - _offset;
}
bytes32[] memory orderIDs = new bytes32[](limit);
address[] memory traderAddresses = new address[](limit);
uint8[] memory states = new uint8[](limit);
for (uint256 i = 0; i < limit; i++) {
bytes32 order = orderbook[i + _offset];
orderIDs[i] = order;
traderAddresses[i] = orders[order].trader;
states[i] = uint8(orders[order].state);
}
return (orderIDs, traderAddresses, states);
}
}
/// @notice A library for calculating and verifying order match details
library SettlementUtils {
struct OrderDetails {
uint64 settlementID;
uint64 tokens;
uint256 price;
uint256 volume;
uint256 minimumVolume;
}
/// @notice Calculates the ID of the order.
/// @param details Order details that are not required for settlement
/// execution. They are combined as a single byte array.
/// @param order The order details required for settlement execution.
function hashOrder(bytes details, OrderDetails memory order) internal pure returns (bytes32) {
return keccak256(
abi.encodePacked(
details,
order.settlementID,
order.tokens,
order.price,
order.volume,
order.minimumVolume
)
);
}
/// @notice Verifies that two orders match when considering the tokens,
/// price, volumes / minimum volumes and settlement IDs. verifyMatchDetails is used
/// my the DarknodeSlasher to verify challenges. Settlement layers may also
/// use this function.
/// @dev When verifying two orders for settlement, you should also:
/// 1) verify the orders have been confirmed together
/// 2) verify the orders' traders are distinct
/// @param _buy The buy order details.
/// @param _sell The sell order details.
function verifyMatchDetails(OrderDetails memory _buy, OrderDetails memory _sell) internal pure returns (bool) {
// Buy and sell tokens should match
if (!verifyTokens(_buy.tokens, _sell.tokens)) {
return false;
}
// Buy price should be greater than sell price
if (_buy.price < _sell.price) {
return false;
}
// // Buy volume should be greater than sell minimum volume
if (_buy.volume < _sell.minimumVolume) {
return false;
}
// Sell volume should be greater than buy minimum volume
if (_sell.volume < _buy.minimumVolume) {
return false;
}
// Require that the orders were submitted to the same settlement layer
if (_buy.settlementID != _sell.settlementID) {
return false;
}
return true;
}
/// @notice Verifies that two token requirements can be matched and that the
/// tokens are formatted correctly.
/// @param _buyTokens The buy token details.
/// @param _sellToken The sell token details.
function verifyTokens(uint64 _buyTokens, uint64 _sellToken) internal pure returns (bool) {
return ((
uint32(_buyTokens) == uint32(_sellToken >> 32)) && (
uint32(_sellToken) == uint32(_buyTokens >> 32)) && (
uint32(_buyTokens >> 32) <= uint32(_buyTokens))
);
}
}
/// @notice RenExTokens is a registry of tokens that can be traded on RenEx.
contract RenExTokens is Ownable {
string public VERSION; // Passed in as a constructor parameter.
struct TokenDetails {
address addr;
uint8 decimals;
bool registered;
}
// Storage
mapping(uint32 => TokenDetails) public tokens;
mapping(uint32 => bool) private detailsSubmitted;
// Events
event LogTokenRegistered(uint32 tokenCode, address tokenAddress, uint8 tokenDecimals);
event LogTokenDeregistered(uint32 tokenCode);
/// @notice The contract constructor.
///
/// @param _VERSION A string defining the contract version.
constructor(string _VERSION) public {
VERSION = _VERSION;
}
/// @notice Allows the owner to register and the details for a token.
/// Once details have been submitted, they cannot be overwritten.
/// To re-register the same token with different details (e.g. if the address
/// has changed), a different token identifier should be used and the
/// previous token identifier should be deregistered.
/// If a token is not Ethereum-based, the address will be set to 0x0.
///
/// @param _tokenCode A unique 32-bit token identifier.
/// @param _tokenAddress The address of the token.
/// @param _tokenDecimals The decimals to use for the token.
function registerToken(uint32 _tokenCode, address _tokenAddress, uint8 _tokenDecimals) public onlyOwner {
require(!tokens[_tokenCode].registered, "already registered");
// If a token is being re-registered, the same details must be provided.
if (detailsSubmitted[_tokenCode]) {
require(tokens[_tokenCode].addr == _tokenAddress, "different address");
require(tokens[_tokenCode].decimals == _tokenDecimals, "different decimals");
} else {
detailsSubmitted[_tokenCode] = true;
}
tokens[_tokenCode] = TokenDetails({
addr: _tokenAddress,
decimals: _tokenDecimals,
registered: true
});
emit LogTokenRegistered(_tokenCode, _tokenAddress, _tokenDecimals);
}
/// @notice Sets a token as being deregistered. The details are still stored
/// to prevent the token from being re-registered with different details.
///
/// @param _tokenCode The unique 32-bit token identifier.
function deregisterToken(uint32 _tokenCode) external onlyOwner {
require(tokens[_tokenCode].registered, "not registered");
tokens[_tokenCode].registered = false;
emit LogTokenDeregistered(_tokenCode);
}
}
/// @notice RenExSettlement implements the Settlement interface. It implements
/// the on-chain settlement for the RenEx settlement layer, and the fee payment
/// for the RenExAtomic settlement layer.
contract RenExSettlement is Ownable {
using SafeMath for uint256;
string public VERSION; // Passed in as a constructor parameter.
// This contract handles the settlements with ID 1 and 2.
uint32 constant public RENEX_SETTLEMENT_ID = 1;
uint32 constant public RENEX_ATOMIC_SETTLEMENT_ID = 2;
// Fees in RenEx are 0.2%. To represent this as integers, it is broken into
// a numerator and denominator.
uint256 constant public DARKNODE_FEES_NUMERATOR = 2;
uint256 constant public DARKNODE_FEES_DENOMINATOR = 1000;
// Constants used in the price / volume inputs.
int16 constant private PRICE_OFFSET = 12;
int16 constant private VOLUME_OFFSET = 12;
// Constructor parameters, updatable by the owner
Orderbook public orderbookContract;
RenExTokens public renExTokensContract;
RenExBalances public renExBalancesContract;
address public slasherAddress;
uint256 public submissionGasPriceLimit;
enum OrderStatus {None, Submitted, Settled, Slashed}
struct TokenPair {
RenExTokens.TokenDetails priorityToken;
RenExTokens.TokenDetails secondaryToken;
}
// A uint256 tuple representing a value and an associated fee
struct ValueWithFees {
uint256 value;
uint256 fees;
}
// A uint256 tuple representing a fraction
struct Fraction {
uint256 numerator;
uint256 denominator;
}
// We use left and right because the tokens do not always represent the
// priority and secondary tokens.
struct SettlementDetails {
uint256 leftVolume;
uint256 rightVolume;
uint256 leftTokenFee;
uint256 rightTokenFee;
address leftTokenAddress;
address rightTokenAddress;
}
// Events
event LogOrderbookUpdated(Orderbook previousOrderbook, Orderbook nextOrderbook);
event LogRenExTokensUpdated(RenExTokens previousRenExTokens, RenExTokens nextRenExTokens);
event LogRenExBalancesUpdated(RenExBalances previousRenExBalances, RenExBalances nextRenExBalances);
event LogSubmissionGasPriceLimitUpdated(uint256 previousSubmissionGasPriceLimit, uint256 nextSubmissionGasPriceLimit);
event LogSlasherUpdated(address previousSlasher, address nextSlasher);
// Order Storage
mapping(bytes32 => SettlementUtils.OrderDetails) public orderDetails;
mapping(bytes32 => address) public orderSubmitter;
mapping(bytes32 => OrderStatus) public orderStatus;
// Match storage (match details are indexed by [buyID][sellID])
mapping(bytes32 => mapping(bytes32 => uint256)) public matchTimestamp;
/// @notice Prevents a function from being called with a gas price higher
/// than the specified limit.
///
/// @param _gasPriceLimit The gas price upper-limit in Wei.
modifier withGasPriceLimit(uint256 _gasPriceLimit) {
require(tx.gasprice <= _gasPriceLimit, "gas price too high");
_;
}
/// @notice Restricts a function to only being called by the slasher
/// address.
modifier onlySlasher() {
require(msg.sender == slasherAddress, "unauthorized");
_;
}
/// @notice The contract constructor.
///
/// @param _VERSION A string defining the contract version.
/// @param _orderbookContract The address of the Orderbook contract.
/// @param _renExBalancesContract The address of the RenExBalances
/// contract.
/// @param _renExTokensContract The address of the RenExTokens contract.
constructor(
string _VERSION,
Orderbook _orderbookContract,
RenExTokens _renExTokensContract,
RenExBalances _renExBalancesContract,
address _slasherAddress,
uint256 _submissionGasPriceLimit
) public {
VERSION = _VERSION;
orderbookContract = _orderbookContract;
renExTokensContract = _renExTokensContract;
renExBalancesContract = _renExBalancesContract;
slasherAddress = _slasherAddress;
submissionGasPriceLimit = _submissionGasPriceLimit;
}
/// @notice The owner of the contract can update the Orderbook address.
/// @param _newOrderbookContract The address of the new Orderbook contract.
function updateOrderbook(Orderbook _newOrderbookContract) external onlyOwner {
emit LogOrderbookUpdated(orderbookContract, _newOrderbookContract);
orderbookContract = _newOrderbookContract;
}
/// @notice The owner of the contract can update the RenExTokens address.
/// @param _newRenExTokensContract The address of the new RenExTokens
/// contract.
function updateRenExTokens(RenExTokens _newRenExTokensContract) external onlyOwner {
emit LogRenExTokensUpdated(renExTokensContract, _newRenExTokensContract);
renExTokensContract = _newRenExTokensContract;
}
/// @notice The owner of the contract can update the RenExBalances address.
/// @param _newRenExBalancesContract The address of the new RenExBalances
/// contract.
function updateRenExBalances(RenExBalances _newRenExBalancesContract) external onlyOwner {
emit LogRenExBalancesUpdated(renExBalancesContract, _newRenExBalancesContract);
renExBalancesContract = _newRenExBalancesContract;
}
/// @notice The owner of the contract can update the order submission gas
/// price limit.
/// @param _newSubmissionGasPriceLimit The new gas price limit.
function updateSubmissionGasPriceLimit(uint256 _newSubmissionGasPriceLimit) external onlyOwner {
emit LogSubmissionGasPriceLimitUpdated(submissionGasPriceLimit, _newSubmissionGasPriceLimit);
submissionGasPriceLimit = _newSubmissionGasPriceLimit;
}
/// @notice The owner of the contract can update the slasher address.
/// @param _newSlasherAddress The new slasher address.
function updateSlasher(address _newSlasherAddress) external onlyOwner {
emit LogSlasherUpdated(slasherAddress, _newSlasherAddress);
slasherAddress = _newSlasherAddress;
}
/// @notice Stores the details of an order.
///
/// @param _prefix The miscellaneous details of the order required for
/// calculating the order id.
/// @param _settlementID The settlement identifier.
/// @param _tokens The encoding of the token pair (buy token is encoded as
/// the first 32 bytes and sell token is encoded as the last 32
/// bytes).
/// @param _price The price of the order. Interpreted as the cost for 1
/// standard unit of the non-priority token, in 1e12 (i.e.
/// PRICE_OFFSET) units of the priority token).
/// @param _volume The volume of the order. Interpreted as the maximum
/// number of 1e-12 (i.e. VOLUME_OFFSET) units of the non-priority
/// token that can be traded by this order.
/// @param _minimumVolume The minimum volume the trader is willing to
/// accept. Encoded the same as the volume.
function submitOrder(
bytes _prefix,
uint64 _settlementID,
uint64 _tokens,
uint256 _price,
uint256 _volume,
uint256 _minimumVolume
) external withGasPriceLimit(submissionGasPriceLimit) {
SettlementUtils.OrderDetails memory order = SettlementUtils.OrderDetails({
settlementID: _settlementID,
tokens: _tokens,
price: _price,
volume: _volume,
minimumVolume: _minimumVolume
});
bytes32 orderID = SettlementUtils.hashOrder(_prefix, order);
require(orderStatus[orderID] == OrderStatus.None, "order already submitted");
require(orderbookContract.orderState(orderID) == Orderbook.OrderState.Confirmed, "unconfirmed order");
orderSubmitter[orderID] = msg.sender;
orderStatus[orderID] = OrderStatus.Submitted;
orderDetails[orderID] = order;
}
/// @notice Settles two orders that are matched. `submitOrder` must have been
/// called for each order before this function is called.
///
/// @param _buyID The 32 byte ID of the buy order.
/// @param _sellID The 32 byte ID of the sell order.
function settle(bytes32 _buyID, bytes32 _sellID) external {
require(orderStatus[_buyID] == OrderStatus.Submitted, "invalid buy status");
require(orderStatus[_sellID] == OrderStatus.Submitted, "invalid sell status");
// Check the settlement ID (only have to check for one, since
// `verifyMatchDetails` checks that they are the same)
require(
orderDetails[_buyID].settlementID == RENEX_ATOMIC_SETTLEMENT_ID ||
orderDetails[_buyID].settlementID == RENEX_SETTLEMENT_ID,
"invalid settlement id"
);
// Verify that the two order details are compatible.
require(SettlementUtils.verifyMatchDetails(orderDetails[_buyID], orderDetails[_sellID]), "incompatible orders");
// Verify that the two orders have been confirmed to one another.
require(orderbookContract.orderMatch(_buyID) == _sellID, "unconfirmed orders");
// Retrieve token details.
TokenPair memory tokens = getTokenDetails(orderDetails[_buyID].tokens);
// Require that the tokens have been registered.
require(tokens.priorityToken.registered, "unregistered priority token");
require(tokens.secondaryToken.registered, "unregistered secondary token");
address buyer = orderbookContract.orderTrader(_buyID);
address seller = orderbookContract.orderTrader(_sellID);
require(buyer != seller, "orders from same trader");
execute(_buyID, _sellID, buyer, seller, tokens);
/* solium-disable-next-line security/no-block-members */
matchTimestamp[_buyID][_sellID] = now;
// Store that the orders have been settled.
orderStatus[_buyID] = OrderStatus.Settled;
orderStatus[_sellID] = OrderStatus.Settled;
}
/// @notice Slashes the bond of a guilty trader. This is called when an
/// atomic swap is not executed successfully.
/// To open an atomic order, a trader must have a balance equivalent to
/// 0.6% of the trade in the Ethereum-based token. 0.2% is always paid in
/// darknode fees when the order is matched. If the remaining amount is
/// is slashed, it is distributed as follows:
/// 1) 0.2% goes to the other trader, covering their fee
/// 2) 0.2% goes to the slasher address
/// Only one order in a match can be slashed.
///
/// @param _guiltyOrderID The 32 byte ID of the order of the guilty trader.
function slash(bytes32 _guiltyOrderID) external onlySlasher {
require(orderDetails[_guiltyOrderID].settlementID == RENEX_ATOMIC_SETTLEMENT_ID, "slashing non-atomic trade");
bytes32 innocentOrderID = orderbookContract.orderMatch(_guiltyOrderID);
require(orderStatus[_guiltyOrderID] == OrderStatus.Settled, "invalid order status");
require(orderStatus[innocentOrderID] == OrderStatus.Settled, "invalid order status");
orderStatus[_guiltyOrderID] = OrderStatus.Slashed;
(bytes32 buyID, bytes32 sellID) = isBuyOrder(_guiltyOrderID) ?
(_guiltyOrderID, innocentOrderID) : (innocentOrderID, _guiltyOrderID);
TokenPair memory tokens = getTokenDetails(orderDetails[buyID].tokens);
SettlementDetails memory settlementDetails = calculateAtomicFees(buyID, sellID, tokens);
// Transfer the fee amount to the other trader
renExBalancesContract.transferBalanceWithFee(
orderbookContract.orderTrader(_guiltyOrderID),
orderbookContract.orderTrader(innocentOrderID),
settlementDetails.leftTokenAddress,
settlementDetails.leftTokenFee,
0,
0x0
);
// Transfer the fee amount to the slasher
renExBalancesContract.transferBalanceWithFee(
orderbookContract.orderTrader(_guiltyOrderID),
slasherAddress,
settlementDetails.leftTokenAddress,
settlementDetails.leftTokenFee,
0,
0x0
);
}
/// @notice Retrieves the settlement details of an order.
/// For atomic swaps, it returns the full volumes, not the settled fees.
///
/// @param _orderID The order to lookup the details of. Can be the ID of a
/// buy or a sell order.
/// @return [
/// a boolean representing whether or not the order has been settled,
/// a boolean representing whether or not the order is a buy
/// the 32-byte order ID of the matched order
/// the volume of the priority token,
/// the volume of the secondary token,
/// the fee paid in the priority token,
/// the fee paid in the secondary token,
/// the token code of the priority token,
/// the token code of the secondary token
/// ]
function getMatchDetails(bytes32 _orderID)
external view returns (
bool settled,
bool orderIsBuy,
bytes32 matchedID,
uint256 priorityVolume,
uint256 secondaryVolume,
uint256 priorityFee,
uint256 secondaryFee,
uint32 priorityToken,
uint32 secondaryToken
) {
matchedID = orderbookContract.orderMatch(_orderID);
orderIsBuy = isBuyOrder(_orderID);
(bytes32 buyID, bytes32 sellID) = orderIsBuy ?
(_orderID, matchedID) : (matchedID, _orderID);
SettlementDetails memory settlementDetails = calculateSettlementDetails(
buyID,
sellID,
getTokenDetails(orderDetails[buyID].tokens)
);
return (
orderStatus[_orderID] == OrderStatus.Settled || orderStatus[_orderID] == OrderStatus.Slashed,
orderIsBuy,
matchedID,
settlementDetails.leftVolume,
settlementDetails.rightVolume,
settlementDetails.leftTokenFee,
settlementDetails.rightTokenFee,
uint32(orderDetails[buyID].tokens >> 32),
uint32(orderDetails[buyID].tokens)
);
}
/// @notice Exposes the hashOrder function for computing a hash of an
/// order's details. An order hash is used as its ID. See `submitOrder`
/// for the parameter descriptions.
///
/// @return The 32-byte hash of the order.
function hashOrder(
bytes _prefix,
uint64 _settlementID,
uint64 _tokens,
uint256 _price,
uint256 _volume,
uint256 _minimumVolume
) external pure returns (bytes32) {
return SettlementUtils.hashOrder(_prefix, SettlementUtils.OrderDetails({
settlementID: _settlementID,
tokens: _tokens,
price: _price,
volume: _volume,
minimumVolume: _minimumVolume
}));
}
/// @notice Called by `settle`, executes the settlement for a RenEx order
/// or distributes the fees for a RenExAtomic swap.
///
/// @param _buyID The 32 byte ID of the buy order.
/// @param _sellID The 32 byte ID of the sell order.
/// @param _buyer The address of the buy trader.
/// @param _seller The address of the sell trader.
/// @param _tokens The details of the priority and secondary tokens.
function execute(
bytes32 _buyID,
bytes32 _sellID,
address _buyer,
address _seller,
TokenPair memory _tokens
) private {
// Calculate the fees for atomic swaps, and the settlement details
// otherwise.
SettlementDetails memory settlementDetails = (orderDetails[_buyID].settlementID == RENEX_ATOMIC_SETTLEMENT_ID) ?
settlementDetails = calculateAtomicFees(_buyID, _sellID, _tokens) :
settlementDetails = calculateSettlementDetails(_buyID, _sellID, _tokens);
// Transfer priority token value
renExBalancesContract.transferBalanceWithFee(
_buyer,
_seller,
settlementDetails.leftTokenAddress,
settlementDetails.leftVolume,
settlementDetails.leftTokenFee,
orderSubmitter[_buyID]
);
// Transfer secondary token value
renExBalancesContract.transferBalanceWithFee(
_seller,
_buyer,
settlementDetails.rightTokenAddress,
settlementDetails.rightVolume,
settlementDetails.rightTokenFee,
orderSubmitter[_sellID]
);
}
/// @notice Calculates the details required to execute two matched orders.
///
/// @param _buyID The 32 byte ID of the buy order.
/// @param _sellID The 32 byte ID of the sell order.
/// @param _tokens The details of the priority and secondary tokens.
/// @return A struct containing the settlement details.
function calculateSettlementDetails(
bytes32 _buyID,
bytes32 _sellID,
TokenPair memory _tokens
) private view returns (SettlementDetails memory) {
// Calculate the mid-price (using numerator and denominator to not loose
// precision).
Fraction memory midPrice = Fraction(orderDetails[_buyID].price + orderDetails[_sellID].price, 2);
// Calculate the lower of the two max volumes of each trader
uint256 commonVolume = Math.min256(orderDetails[_buyID].volume, orderDetails[_sellID].volume);
uint256 priorityTokenVolume = joinFraction(
commonVolume.mul(midPrice.numerator),
midPrice.denominator,
int16(_tokens.priorityToken.decimals) - PRICE_OFFSET - VOLUME_OFFSET
);
uint256 secondaryTokenVolume = joinFraction(
commonVolume,
1,
int16(_tokens.secondaryToken.decimals) - VOLUME_OFFSET
);
// Calculate darknode fees
ValueWithFees memory priorityVwF = subtractDarknodeFee(priorityTokenVolume);
ValueWithFees memory secondaryVwF = subtractDarknodeFee(secondaryTokenVolume);
return SettlementDetails({
leftVolume: priorityVwF.value,
rightVolume: secondaryVwF.value,
leftTokenFee: priorityVwF.fees,
rightTokenFee: secondaryVwF.fees,
leftTokenAddress: _tokens.priorityToken.addr,
rightTokenAddress: _tokens.secondaryToken.addr
});
}
/// @notice Calculates the fees to be transferred for an atomic swap.
///
/// @param _buyID The 32 byte ID of the buy order.
/// @param _sellID The 32 byte ID of the sell order.
/// @param _tokens The details of the priority and secondary tokens.
/// @return A struct containing the fee details.
function calculateAtomicFees(
bytes32 _buyID,
bytes32 _sellID,
TokenPair memory _tokens
) private view returns (SettlementDetails memory) {
// Calculate the mid-price (using numerator and denominator to not loose
// precision).
Fraction memory midPrice = Fraction(orderDetails[_buyID].price + orderDetails[_sellID].price, 2);
// Calculate the lower of the two max volumes of each trader
uint256 commonVolume = Math.min256(orderDetails[_buyID].volume, orderDetails[_sellID].volume);
if (isEthereumBased(_tokens.secondaryToken.addr)) {
uint256 secondaryTokenVolume = joinFraction(
commonVolume,
1,
int16(_tokens.secondaryToken.decimals) - VOLUME_OFFSET
);
// Calculate darknode fees
ValueWithFees memory secondaryVwF = subtractDarknodeFee(secondaryTokenVolume);
return SettlementDetails({
leftVolume: 0,
rightVolume: 0,
leftTokenFee: secondaryVwF.fees,
rightTokenFee: secondaryVwF.fees,
leftTokenAddress: _tokens.secondaryToken.addr,
rightTokenAddress: _tokens.secondaryToken.addr
});
} else if (isEthereumBased(_tokens.priorityToken.addr)) {
uint256 priorityTokenVolume = joinFraction(
commonVolume.mul(midPrice.numerator),
midPrice.denominator,
int16(_tokens.priorityToken.decimals) - PRICE_OFFSET - VOLUME_OFFSET
);
// Calculate darknode fees
ValueWithFees memory priorityVwF = subtractDarknodeFee(priorityTokenVolume);
return SettlementDetails({
leftVolume: 0,
rightVolume: 0,
leftTokenFee: priorityVwF.fees,
rightTokenFee: priorityVwF.fees,
leftTokenAddress: _tokens.priorityToken.addr,
rightTokenAddress: _tokens.priorityToken.addr
});
} else {
// Currently, at least one token must be Ethereum-based.
// This will be implemented in the future.
revert("non-eth atomic swaps are not supported");
}
}
/// @notice Order parity is set by the order tokens are listed. This returns
/// whether an order is a buy or a sell.
/// @return true if _orderID is a buy order.
function isBuyOrder(bytes32 _orderID) private view returns (bool) {
uint64 tokens = orderDetails[_orderID].tokens;
uint32 firstToken = uint32(tokens >> 32);
uint32 secondaryToken = uint32(tokens);
return (firstToken < secondaryToken);
}
/// @return (value - fee, fee) where fee is 0.2% of value
function subtractDarknodeFee(uint256 _value) private pure returns (ValueWithFees memory) {
uint256 newValue = (_value * (DARKNODE_FEES_DENOMINATOR - DARKNODE_FEES_NUMERATOR)) / DARKNODE_FEES_DENOMINATOR;
return ValueWithFees(newValue, _value - newValue);
}
/// @notice Gets the order details of the priority and secondary token from
/// the RenExTokens contract and returns them as a single struct.
///
/// @param _tokens The 64-bit combined token identifiers.
/// @return A TokenPair struct containing two TokenDetails structs.
function getTokenDetails(uint64 _tokens) private view returns (TokenPair memory) {
(
address priorityAddress,
uint8 priorityDecimals,
bool priorityRegistered
) = renExTokensContract.tokens(uint32(_tokens >> 32));
(
address secondaryAddress,
uint8 secondaryDecimals,
bool secondaryRegistered
) = renExTokensContract.tokens(uint32(_tokens));
return TokenPair({
priorityToken: RenExTokens.TokenDetails(priorityAddress, priorityDecimals, priorityRegistered),
secondaryToken: RenExTokens.TokenDetails(secondaryAddress, secondaryDecimals, secondaryRegistered)
});
}
/// @return true if _tokenAddress is 0x0, representing a token that is not
/// on Ethereum
function isEthereumBased(address _tokenAddress) private pure returns (bool) {
return (_tokenAddress != address(0x0));
}
/// @notice Computes (_numerator / _denominator) * 10 ** _scale
function joinFraction(uint256 _numerator, uint256 _denominator, int16 _scale) private pure returns (uint256) {
if (_scale >= 0) {
// Check that (10**_scale) doesn't overflow
assert(_scale <= 77); // log10(2**256) = 77.06
return _numerator.mul(10 ** uint256(_scale)) / _denominator;
} else {
/// @dev If _scale is less than -77, 10**-_scale would overflow.
// For now, -_scale > -24 (when a token has 0 decimals and
// VOLUME_OFFSET and PRICE_OFFSET are each 12). It is unlikely these
// will be increased to add to more than 77.
// assert((-_scale) <= 77); // log10(2**256) = 77.06
return (_numerator / _denominator) / 10 ** uint256(-_scale);
}
}
}
/// @notice RenExBrokerVerifier implements the BrokerVerifier contract,
/// verifying broker signatures for order opening and fund withdrawal.
contract RenExBrokerVerifier is Ownable {
string public VERSION; // Passed in as a constructor parameter.
// Events
event LogBalancesContractUpdated(address previousBalancesContract, address nextBalancesContract);
event LogBrokerRegistered(address broker);
event LogBrokerDeregistered(address broker);
// Storage
mapping(address => bool) public brokers;
mapping(address => uint256) public traderNonces;
address public balancesContract;
modifier onlyBalancesContract() {
require(msg.sender == balancesContract, "not authorized");
_;
}
/// @notice The contract constructor.
///
/// @param _VERSION A string defining the contract version.
constructor(string _VERSION) public {
VERSION = _VERSION;
}
/// @notice Allows the owner of the contract to update the address of the
/// RenExBalances contract.
///
/// @param _balancesContract The address of the new balances contract
function updateBalancesContract(address _balancesContract) external onlyOwner {
emit LogBalancesContractUpdated(balancesContract, _balancesContract);
balancesContract = _balancesContract;
}
/// @notice Approved an address to sign order-opening and withdrawals.
/// @param _broker The address of the broker.
function registerBroker(address _broker) external onlyOwner {
require(!brokers[_broker], "already registered");
brokers[_broker] = true;
emit LogBrokerRegistered(_broker);
}
/// @notice Reverts the a broker's registration.
/// @param _broker The address of the broker.
function deregisterBroker(address _broker) external onlyOwner {
require(brokers[_broker], "not registered");
brokers[_broker] = false;
emit LogBrokerDeregistered(_broker);
}
/// @notice Verifies a broker's signature for an order opening.
/// The data signed by the broker is a prefixed message and the order ID.
///
/// @param _trader The trader requesting the withdrawal.
/// @param _signature The 65-byte signature from the broker.
/// @param _orderID The 32-byte order ID.
/// @return True if the signature is valid, false otherwise.
function verifyOpenSignature(
address _trader,
bytes _signature,
bytes32 _orderID
) external view returns (bool) {
bytes memory data = abi.encodePacked("Republic Protocol: open: ", _trader, _orderID);
address signer = Utils.addr(data, _signature);
return (brokers[signer] == true);
}
/// @notice Verifies a broker's signature for a trader withdrawal.
/// The data signed by the broker is a prefixed message, the trader address
/// and a 256-bit trader nonce, which is incremented every time a valid
/// signature is checked.
///
/// @param _trader The trader requesting the withdrawal.
/// @param _signature 65-byte signature from the broker.
/// @return True if the signature is valid, false otherwise.
function verifyWithdrawSignature(
address _trader,
bytes _signature
) external onlyBalancesContract returns (bool) {
bytes memory data = abi.encodePacked("Republic Protocol: withdraw: ", _trader, traderNonces[_trader]);
address signer = Utils.addr(data, _signature);
if (brokers[signer]) {
traderNonces[_trader] += 1;
return true;
}
return false;
}
}
/// @notice RenExBalances is responsible for holding RenEx trader funds.
contract RenExBalances is Ownable {
using SafeMath for uint256;
using CompatibleERC20Functions for CompatibleERC20;
string public VERSION; // Passed in as a constructor parameter.
RenExSettlement public settlementContract;
RenExBrokerVerifier public brokerVerifierContract;
DarknodeRewardVault public rewardVaultContract;
/// @dev Should match the address in the DarknodeRewardVault
address constant public ETHEREUM = address(0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE);
// Delay between a trader calling `withdrawSignal` and being able to call
// `withdraw` without a broker signature.
uint256 constant public SIGNAL_DELAY = 48 hours;
// Events
event LogBalanceDecreased(address trader, ERC20 token, uint256 value);
event LogBalanceIncreased(address trader, ERC20 token, uint256 value);
event LogRenExSettlementContractUpdated(address previousRenExSettlementContract, address newRenExSettlementContract);
event LogRewardVaultContractUpdated(address previousRewardVaultContract, address newRewardVaultContract);
event LogBrokerVerifierContractUpdated(address previousBrokerVerifierContract, address newBrokerVerifierContract);
// Storage
mapping(address => mapping(address => uint256)) public traderBalances;
mapping(address => mapping(address => uint256)) public traderWithdrawalSignals;
/// @notice The contract constructor.
///
/// @param _VERSION A string defining the contract version.
/// @param _rewardVaultContract The address of the RewardVault contract.
constructor(
string _VERSION,
DarknodeRewardVault _rewardVaultContract,
RenExBrokerVerifier _brokerVerifierContract
) public {
VERSION = _VERSION;
rewardVaultContract = _rewardVaultContract;
brokerVerifierContract = _brokerVerifierContract;
}
/// @notice Restricts a function to only being called by the RenExSettlement
/// contract.
modifier onlyRenExSettlementContract() {
require(msg.sender == address(settlementContract), "not authorized");
_;
}
/// @notice Restricts trader withdrawing to be called if a signature from a
/// RenEx broker is provided, or if a certain amount of time has passed
/// since a trader has called `signalBackupWithdraw`.
/// @dev If the trader is withdrawing after calling `signalBackupWithdraw`,
/// this will reset the time to zero, writing to storage.
modifier withBrokerSignatureOrSignal(address _token, bytes _signature) {
address trader = msg.sender;
// If a signature has been provided, verify it - otherwise, verify that
// the user has signalled the withdraw
if (_signature.length > 0) {
require (brokerVerifierContract.verifyWithdrawSignature(trader, _signature), "invalid signature");
} else {
require(traderWithdrawalSignals[trader][_token] != 0, "not signalled");
/* solium-disable-next-line security/no-block-members */
require((now - traderWithdrawalSignals[trader][_token]) > SIGNAL_DELAY, "signal time remaining");
traderWithdrawalSignals[trader][_token] = 0;
}
_;
}
/// @notice Allows the owner of the contract to update the address of the
/// RenExSettlement contract.
///
/// @param _newSettlementContract the address of the new settlement contract
function updateRenExSettlementContract(RenExSettlement _newSettlementContract) external onlyOwner {
emit LogRenExSettlementContractUpdated(settlementContract, _newSettlementContract);
settlementContract = _newSettlementContract;
}
/// @notice Allows the owner of the contract to update the address of the
/// DarknodeRewardVault contract.
///
/// @param _newRewardVaultContract the address of the new reward vault contract
function updateRewardVaultContract(DarknodeRewardVault _newRewardVaultContract) external onlyOwner {
emit LogRewardVaultContractUpdated(rewardVaultContract, _newRewardVaultContract);
rewardVaultContract = _newRewardVaultContract;
}
/// @notice Allows the owner of the contract to update the address of the
/// RenExBrokerVerifier contract.
///
/// @param _newBrokerVerifierContract the address of the new broker verifier contract
function updateBrokerVerifierContract(RenExBrokerVerifier _newBrokerVerifierContract) external onlyOwner {
emit LogBrokerVerifierContractUpdated(brokerVerifierContract, _newBrokerVerifierContract);
brokerVerifierContract = _newBrokerVerifierContract;
}
/// @notice Transfer a token value from one trader to another, transferring
/// a fee to the RewardVault. Can only be called by the RenExSettlement
/// contract.
///
/// @param _traderFrom The address of the trader to decrement the balance of.
/// @param _traderTo The address of the trader to increment the balance of.
/// @param _token The token's address.
/// @param _value The number of tokens to decrement the balance by (in the
/// token's smallest unit).
/// @param _fee The fee amount to forward on to the RewardVault.
/// @param _feePayee The recipient of the fee.
function transferBalanceWithFee(address _traderFrom, address _traderTo, address _token, uint256 _value, uint256 _fee, address _feePayee)
external onlyRenExSettlementContract {
require(traderBalances[_traderFrom][_token] >= _fee, "insufficient funds for fee");
if (address(_token) == ETHEREUM) {
rewardVaultContract.deposit.value(_fee)(_feePayee, ERC20(_token), _fee);
} else {
CompatibleERC20(_token).safeApprove(rewardVaultContract, _fee);
rewardVaultContract.deposit(_feePayee, ERC20(_token), _fee);
}
privateDecrementBalance(_traderFrom, ERC20(_token), _value + _fee);
if (_value > 0) {
privateIncrementBalance(_traderTo, ERC20(_token), _value);
}
}
/// @notice Deposits ETH or an ERC20 token into the contract.
///
/// @param _token The token's address (must be a registered token).
/// @param _value The amount to deposit in the token's smallest unit.
function deposit(ERC20 _token, uint256 _value) external payable {
address trader = msg.sender;
uint256 receivedValue = _value;
if (address(_token) == ETHEREUM) {
require(msg.value == _value, "mismatched value parameter and tx value");
} else {
require(msg.value == 0, "unexpected ether transfer");
receivedValue = CompatibleERC20(_token).safeTransferFromWithFees(trader, this, _value);
}
privateIncrementBalance(trader, _token, receivedValue);
}
/// @notice Withdraws ETH or an ERC20 token from the contract. A broker
/// signature is required to guarantee that the trader has a sufficient
/// balance after accounting for open orders. As a trustless backup,
/// traders can withdraw 48 hours after calling `signalBackupWithdraw`.
///
/// @param _token The token's address.
/// @param _value The amount to withdraw in the token's smallest unit.
/// @param _signature The broker signature
function withdraw(ERC20 _token, uint256 _value, bytes _signature) external withBrokerSignatureOrSignal(_token, _signature) {
address trader = msg.sender;
privateDecrementBalance(trader, _token, _value);
if (address(_token) == ETHEREUM) {
trader.transfer(_value);
} else {
CompatibleERC20(_token).safeTransfer(trader, _value);
}
}
/// @notice A trader can withdraw without needing a broker signature if they
/// first call `signalBackupWithdraw` for the token they want to withdraw.
/// The trader can only withdraw the particular token once for each call to
/// this function. Traders can signal the intent to withdraw multiple
/// tokens.
/// Once this function is called, brokers will not sign order-opens for the
/// trader until the trader has withdrawn, guaranteeing that they won't have
/// orders open for the particular token.
function signalBackupWithdraw(address _token) external {
/* solium-disable-next-line security/no-block-members */
traderWithdrawalSignals[msg.sender][_token] = now;
}
function privateIncrementBalance(address _trader, ERC20 _token, uint256 _value) private {
traderBalances[_trader][_token] = traderBalances[_trader][_token].add(_value);
emit LogBalanceIncreased(_trader, _token, _value);
}
function privateDecrementBalance(address _trader, ERC20 _token, uint256 _value) private {
require(traderBalances[_trader][_token] >= _value, "insufficient funds");
traderBalances[_trader][_token] = traderBalances[_trader][_token].sub(_value);
emit LogBalanceDecreased(_trader, _token, _value);
}
}Contract Security Audit
- No Contract Security Audit Submitted- Submit Audit Here
[{"constant":true,"inputs":[],"name":"brokerVerifierContract","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_newSettlementContract","type":"address"}],"name":"updateRenExSettlementContract","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"rewardVaultContract","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_token","type":"address"},{"name":"_value","type":"uint256"},{"name":"_signature","type":"bytes"}],"name":"withdraw","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"_traderFrom","type":"address"},{"name":"_traderTo","type":"address"},{"name":"_token","type":"address"},{"name":"_value","type":"uint256"},{"name":"_fee","type":"uint256"},{"name":"_feePayee","type":"address"}],"name":"transferBalanceWithFee","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"_token","type":"address"},{"name":"_value","type":"uint256"}],"name":"deposit","outputs":[],"payable":true,"stateMutability":"payable","type":"function"},{"constant":false,"inputs":[{"name":"_newBrokerVerifierContract","type":"address"}],"name":"updateBrokerVerifierContract","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[],"name":"renounceOwnership","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"owner","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_token","type":"address"}],"name":"signalBackupWithdraw","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"name":"","type":"address"},{"name":"","type":"address"}],"name":"traderBalances","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"SIGNAL_DELAY","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_newRewardVaultContract","type":"address"}],"name":"updateRewardVaultContract","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"settlementContract","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"ETHEREUM","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"name":"","type":"address"},{"name":"","type":"address"}],"name":"traderWithdrawalSignals","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"VERSION","outputs":[{"name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"inputs":[{"name":"_VERSION","type":"string"},{"name":"_rewardVaultContract","type":"address"},{"name":"_brokerVerifierContract","type":"address"}],"payable":false,"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":false,"name":"trader","type":"address"},{"indexed":false,"name":"token","type":"address"},{"indexed":false,"name":"value","type":"uint256"}],"name":"LogBalanceDecreased","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"name":"trader","type":"address"},{"indexed":false,"name":"token","type":"address"},{"indexed":false,"name":"value","type":"uint256"}],"name":"LogBalanceIncreased","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"name":"previousRenExSettlementContract","type":"address"},{"indexed":false,"name":"newRenExSettlementContract","type":"address"}],"name":"LogRenExSettlementContractUpdated","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"name":"previousRewardVaultContract","type":"address"},{"indexed":false,"name":"newRewardVaultContract","type":"address"}],"name":"LogRewardVaultContractUpdated","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"name":"previousBrokerVerifierContract","type":"address"},{"indexed":false,"name":"newBrokerVerifierContract","type":"address"}],"name":"LogBrokerVerifierContractUpdated","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"previousOwner","type":"address"}],"name":"OwnershipRenounced","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"previousOwner","type":"address"},{"indexed":true,"name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"}]Contract Creation Code
60806040523480156200001157600080fd5b50604051620016323803806200163283398101604090815281516020808401519284015160008054600160a060020a031916331790559190930180519093620000609160019186019062000094565b5060048054600160a060020a03938416600160a060020a031991821617909155600380549290931691161790555062000139565b828054600181600116156101000203166002900490600052602060002090601f016020900481019282601f10620000d757805160ff191683800117855562000107565b8280016001018555821562000107579182015b8281111562000107578251825591602001919060010190620000ea565b506200011592915062000119565b5090565b6200013691905b8082111562000115576000815560010162000120565b90565b6114e980620001496000396000f3006080604052600436106100e25763ffffffff60e060020a600035041663080bdfa881146100e75780631d65551d1461011857806323017a3a1461013b57806331f092651461015057806334814e581461018157806347e7ef24146101bc57806367aa50ae146101d3578063715018a6146101f45780638da5cb5b1461020957806395b8cf551461021e578063c43c633b1461023f578063e12cbb3c14610278578063e1c3aedc1461028d578063ea42418b146102ae578063f2fde38b146102c3578063f7cdf47c146102e4578063fc257baa146102f9578063ffa1ad7414610320575b600080fd5b3480156100f357600080fd5b506100fc6103aa565b60408051600160a060020a039092168252519081900360200190f35b34801561012457600080fd5b50610139600160a060020a03600435166103b9565b005b34801561014757600080fd5b506100fc610447565b34801561015c57600080fd5b5061013960048035600160a060020a0316906024803591604435918201910135610456565b34801561018d57600080fd5b50610139600160a060020a03600435811690602435811690604435811690606435906084359060a435166107ab565b610139600160a060020a0360043516602435610a24565b3480156101df57600080fd5b50610139600160a060020a0360043516610b52565b34801561020057600080fd5b50610139610be0565b34801561021557600080fd5b506100fc610c4c565b34801561022a57600080fd5b50610139600160a060020a0360043516610c5b565b34801561024b57600080fd5b50610266600160a060020a0360043581169060243516610c84565b60408051918252519081900360200190f35b34801561028457600080fd5b50610266610ca1565b34801561029957600080fd5b50610139600160a060020a0360043516610ca8565b3480156102ba57600080fd5b506100fc610d36565b3480156102cf57600080fd5b50610139600160a060020a0360043516610d45565b3480156102f057600080fd5b506100fc610d68565b34801561030557600080fd5b50610266600160a060020a0360043581169060243516610d80565b34801561032c57600080fd5b50610335610d9d565b6040805160208082528351818301528351919283929083019185019080838360005b8381101561036f578181015183820152602001610357565b50505050905090810190601f16801561039c5780820380516001836020036101000a031916815260200191505b509250505060405180910390f35b600354600160a060020a031681565b600054600160a060020a031633146103d057600080fd5b60025460408051600160a060020a039283168152918316602083015280517f8108e388ca125ce52d732c3507bc30e14194e147d133753ca55d6b5f109467ae9281900390910190a16002805473ffffffffffffffffffffffffffffffffffffffff1916600160a060020a0392909216919091179055565b600454600160a060020a031681565b60008483838080601f016020809104026020016040519081016040528093929190818152602001838380828437505084513394506000101592506105ef91505057600354604080517fc043df8c000000000000000000000000000000000000000000000000000000008152600160a060020a038481166004830190815260248301938452865160448401528651919094169363c043df8c9386938893606490910190602085019080838360005b8381101561051b578181015183820152602001610503565b50505050905090810190601f1680156105485780820380516001836020036101000a031916815260200191505b509350505050602060405180830381600087803b15801561056857600080fd5b505af115801561057c573d6000803e3d6000fd5b505050506040513d602081101561059257600080fd5b505115156105ea576040805160e560020a62461bcd02815260206004820152601160248201527f696e76616c6964207369676e6174757265000000000000000000000000000000604482015290519081900360640190fd5b610718565b600160a060020a03808216600090815260066020908152604080832093871683529290522054151561066b576040805160e560020a62461bcd02815260206004820152600d60248201527f6e6f74207369676e616c6c656400000000000000000000000000000000000000604482015290519081900360640190fd5b600160a060020a038082166000908152600660209081526040808320938716835292905220546202a3004291909103116106ef576040805160e560020a62461bcd02815260206004820152601560248201527f7369676e616c2074696d652072656d61696e696e670000000000000000000000604482015290519081900360640190fd5b600160a060020a0380821660009081526006602090815260408083209387168352929052908120555b339350610726848989610e2a565b600160a060020a03881673eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee141561078757604051600160a060020a0385169088156108fc029089906000818181858888f19350505050158015610781573d6000803e3d6000fd5b506107a1565b6107a1600160a060020a038916858963ffffffff610f4d16565b5050505050505050565b600254600160a060020a0316331461080d576040805160e560020a62461bcd02815260206004820152600e60248201527f6e6f7420617574686f72697a6564000000000000000000000000000000000000604482015290519081900360640190fd5b600160a060020a0380871660009081526005602090815260408083209388168352929052205482111561088a576040805160e560020a62461bcd02815260206004820152601a60248201527f696e73756666696369656e742066756e647320666f7220666565000000000000604482015290519081900360640190fd5b600160a060020a03841673eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee14156109485760048054604080517f8340f549000000000000000000000000000000000000000000000000000000008152600160a060020a038581169482019490945287841660248201526044810186905290519290911691638340f549918591606480830192600092919082900301818588803b15801561092a57600080fd5b505af115801561093e573d6000803e3d6000fd5b50505050506109fb565b60045461096890600160a060020a0386811691168463ffffffff61102b16565b60048054604080517f8340f549000000000000000000000000000000000000000000000000000000008152600160a060020a038581169482019490945287841660248201526044810186905290519290911691638340f5499160648082019260009290919082900301818387803b1580156109e257600080fd5b505af11580156109f6573d6000803e3d6000fd5b505050505b610a088685848601610e2a565b6000831115610a1c57610a1c858585611104565b505050505050565b3381600160a060020a03841673eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee1415610acd57348314610ac8576040805160e560020a62461bcd02815260206004820152602760248201527f6d69736d6174636865642076616c756520706172616d6574657220616e64207460448201527f782076616c756500000000000000000000000000000000000000000000000000606482015290519081900360840190fd5b610b41565b3415610b23576040805160e560020a62461bcd02815260206004820152601960248201527f756e6578706563746564206574686572207472616e7366657200000000000000604482015290519081900360640190fd5b610b3e600160a060020a03851683308663ffffffff6111aa16565b90505b610b4c828583611104565b50505050565b600054600160a060020a03163314610b6957600080fd5b60035460408051600160a060020a039283168152918316602083015280517f320ee0620117fe5b31d2b2ca97b2a711e2045489d6eb5290a73f04747f1819be9281900390910190a16003805473ffffffffffffffffffffffffffffffffffffffff1916600160a060020a0392909216919091179055565b600054600160a060020a03163314610bf757600080fd5b60008054604051600160a060020a03909116917ff8df31144d9c2f0f6b59d69b8b98abd5459d07f2742c4df920b25aae33c6482091a26000805473ffffffffffffffffffffffffffffffffffffffff19169055565b600054600160a060020a031681565b336000908152600660209081526040808320600160a060020a0394909416835292905220429055565b600560209081526000928352604080842090915290825290205481565b6202a30081565b600054600160a060020a03163314610cbf57600080fd5b60045460408051600160a060020a039283168152918316602083015280517f6c348498f095f3d7eb84de1c0bf7fd7db8217d2fdd2af573ad0fa3642901c2459281900390910190a16004805473ffffffffffffffffffffffffffffffffffffffff1916600160a060020a0392909216919091179055565b600254600160a060020a031681565b600054600160a060020a03163314610d5c57600080fd5b610d65816113cf565b50565b73eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee81565b600660209081526000928352604080842090915290825290205481565b60018054604080516020600284861615610100026000190190941693909304601f81018490048402820184019092528181529291830182828015610e225780601f10610df757610100808354040283529160200191610e22565b820191906000526020600020905b815481529060010190602001808311610e0557829003601f168201915b505050505081565b600160a060020a03808416600090815260056020908152604080832093861683529290522054811115610ea7576040805160e560020a62461bcd02815260206004820152601260248201527f696e73756666696369656e742066756e64730000000000000000000000000000604482015290519081900360640190fd5b600160a060020a03808416600090815260056020908152604080832093861683529290522054610edd908263ffffffff61144c16565b600160a060020a038085166000818152600560209081526040808320948816808452948252918290209490945580519182529281019190915280820183905290517f2622669645a3d6b14dc5d6134367eb988c1b617ea2df59f8aa0f102ba049977c9181900360600190a1505050565b82600160a060020a031663a9059cbb83836040518363ffffffff1660e060020a0281526004018083600160a060020a0316600160a060020a0316815260200182815260200192505050600060405180830381600087803b158015610fb057600080fd5b505af1158015610fc4573d6000803e3d6000fd5b50505050610fd061145e565b1515611026576040805160e560020a62461bcd02815260206004820152600f60248201527f7472616e73666572206661696c65640000000000000000000000000000000000604482015290519081900360640190fd5b505050565b82600160a060020a031663095ea7b383836040518363ffffffff1660e060020a0281526004018083600160a060020a0316600160a060020a0316815260200182815260200192505050600060405180830381600087803b15801561108e57600080fd5b505af11580156110a2573d6000803e3d6000fd5b505050506110ae61145e565b1515611026576040805160e560020a62461bcd02815260206004820152600e60248201527f617070726f7665206661696c6564000000000000000000000000000000000000604482015290519081900360640190fd5b600160a060020a0380841660009081526005602090815260408083209386168352929052205461113a908263ffffffff61149216565b600160a060020a038085166000818152600560209081526040808320948816808452948252918290209490945580519182529281019190915280820183905290517f8d6dc51e8945c5e6a4ddb872612ec2b1f5e375a97daebdbb6a03a64e7c6592099181900360600190a1505050565b600080600086600160a060020a03166370a08231866040518263ffffffff1660e060020a0281526004018082600160a060020a0316600160a060020a03168152602001915050602060405180830381600087803b15801561120a57600080fd5b505af115801561121e573d6000803e3d6000fd5b505050506040513d602081101561123457600080fd5b5051604080517f23b872dd000000000000000000000000000000000000000000000000000000008152600160a060020a0389811660048301528881166024830152604482018890529151929450908916916323b872dd9160648082019260009290919082900301818387803b1580156112ac57600080fd5b505af11580156112c0573d6000803e3d6000fd5b505050506112cc61145e565b1515611322576040805160e560020a62461bcd02815260206004820152601360248201527f7472616e7366657246726f6d206661696c656400000000000000000000000000604482015290519081900360640190fd5b86600160a060020a03166370a08231866040518263ffffffff1660e060020a0281526004018082600160a060020a0316600160a060020a03168152602001915050602060405180830381600087803b15801561137d57600080fd5b505af1158015611391573d6000803e3d6000fd5b505050506040513d60208110156113a757600080fd5b505190506113c4846113bf838563ffffffff61144c16565b6114a5565b979650505050505050565b600160a060020a03811615156113e457600080fd5b60008054604051600160a060020a03808516939216917f8be0079c531659141344cd1fd0a4f28419497f9722a3daafe3b4186f6b6457e091a36000805473ffffffffffffffffffffffffffffffffffffffff1916600160a060020a0392909216919091179055565b60008282111561145857fe5b50900390565b6000803d8015611475576020811461147e5761148a565b6001915061148a565b60206000803e60005191505b501515919050565b8181018281101561149f57fe5b92915050565b60008183106114b457816114b6565b825b93925050505600a165627a7a72305820598ffd68e54c83a8aac3208c875bee2d7b9684c803d2575e42a61153209fcbaf00290000000000000000000000000000000000000000000000000000000000000060000000000000000000000000880407c9cd119bef48b1821cdfc434e3ca3cd58800000000000000000000000031a0d1a199631d244761eeba67e8501296d2e383000000000000000000000000000000000000000000000000000000000000000d6d61696e6e65742d312e302e3100000000000000000000000000000000000000
Deployed Bytecode
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
Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
0000000000000000000000000000000000000000000000000000000000000060000000000000000000000000880407c9cd119bef48b1821cdfc434e3ca3cd58800000000000000000000000031a0d1a199631d244761eeba67e8501296d2e383000000000000000000000000000000000000000000000000000000000000000d6d61696e6e65742d312e302e3100000000000000000000000000000000000000
-----Decoded View---------------
Arg [0] : _VERSION (string): mainnet-1.0.1
Arg [1] : _rewardVaultContract (address): 0x880407C9Cd119BeF48b1821CdfC434e3ca3cd588
Arg [2] : _brokerVerifierContract (address): 0x31a0D1A199631D244761EEba67e8501296d2E383
-----Encoded View---------------
5 Constructor Arguments found :
Arg [0] : 0000000000000000000000000000000000000000000000000000000000000060
Arg [1] : 000000000000000000000000880407c9cd119bef48b1821cdfc434e3ca3cd588
Arg [2] : 00000000000000000000000031a0d1a199631d244761eeba67e8501296d2e383
Arg [3] : 000000000000000000000000000000000000000000000000000000000000000d
Arg [4] : 6d61696e6e65742d312e302e3100000000000000000000000000000000000000
Swarm Source
bzzr://598ffd68e54c83a8aac3208c875bee2d7b9684c803d2575e42a61153209fcbaf
Loading...
Loading
Loading...
Loading
Loading...
Loading
[ Download: CSV Export ]
[ Download: CSV Export ]
A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.