/**
*Submitted for verification at Etherscan.io on 2021-02-08
*/
/**
*Submitted for verification at Etherscan.io on 2021-01-22
*/
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
/**
* @dev Wrappers over Solidity's arithmetic operations with added overflow
* checks.
*
* Arithmetic operations in Solidity wrap on overflow. This can easily result
* in bugs, because programmers usually assume that an overflow raises an
* error, which is the standard behavior in high level programming languages.
* `SafeMath` restores this intuition by reverting the transaction when an
* operation overflows.
*
* Using this library instead of the unchecked operations eliminates an entire
* class of bugs, so it's recommended to use it always.
*/
library SafeMath {
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
*
* - Addition cannot overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return sub(a, b, "SafeMath: subtraction overflow");
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b <= a, errorMessage);
uint256 c = a - b;
return c;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
*
* - Multiplication cannot overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return div(a, b, "SafeMath: division by zero");
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts with custom message on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return mod(a, b, "SafeMath: modulo by zero");
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts with custom message when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b != 0, errorMessage);
return a % b;
}
}
/*
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with GSN meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
abstract contract Context {
function _msgSender() internal view virtual returns (address payable) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes memory) {
this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
return msg.data;
}
}
/**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* By default, the owner account will be the one that deploys the contract. This
* can later be changed with {transferOwnership}.
*
* This module is used through inheritance. It will make available the modifier
* `onlyGovernance`, which can be applied to your functions to restrict their use to
* the owner.
*/
abstract contract Ownable is Context {
address private _governance;
address private _owner;
event OwnershipTransferred(
address indexed previousOwner,
address indexed newOwner
);
event GovernanceshipTransferred(
address indexed previousGovernance,
address indexed newGovernance
);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor() {
address msgSender = _msgSender();
_governance = msgSender;
_owner = msgSender;
emit OwnershipTransferred(address(0), msgSender);
emit GovernanceshipTransferred(address(0), msgSender);
}
/**
* @dev Returns the address of the current owner.
*/
function governance() public view returns (address) {
return _governance;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyGovernance() {
require(
_governance == _msgSender(),
"Ownable: caller is not the owner"
);
_;
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(_owner == _msgSender(), "Ownable: caller is not the owner");
_;
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyGovernance` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyGovernance {
emit OwnershipTransferred(_governance, address(0));
_governance = address(0);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newGovernance)
public
virtual
onlyGovernance
{
require(
newGovernance != address(0),
"Ownable: new owner is the zero address"
);
emit OwnershipTransferred(_governance, newGovernance);
_governance = newGovernance;
}
}
contract Dice is Context, Ownable {
using SafeMath for uint256;
uint256 private _totalAmount;
mapping(address => uint256) private _userBalanceList;
constructor() {
_totalAmount = 0;
}
/**
* @dev Get Balance of User
*/
function balanceOfPlayer(address userAddress)
external
view
returns (uint256)
{
return _userBalanceList[userAddress];
}
/**
* @dev Get Total Balance
*/
function getTotalBalance() external view returns (uint256) {
return _totalAmount;
}
/**
* @dev receive event
*/
receive() external payable {
deposit();
}
/**
* @dev Receive ETH from player and update his balance on DiceContract
*/
function deposit() public payable {
address userAddress = _msgSender();
uint256 depositAmouont = msg.value;
// Update Player's Balance
_userBalanceList[userAddress] = _userBalanceList[userAddress].add(
depositAmouont
);
// Update Total amount
_totalAmount = _totalAmount.add(depositAmouont);
}
/**
* @dev Withdraw User Balance to user account, only Governance call it
*/
function userWithdraw(address withdrawAddress, uint256 amount)
public
payable
onlyGovernance
{
require(
_totalAmount >= amount,
"User Balance should be more than withdraw amount."
);
// Send ETH From Contract to User Address
(bool sent, ) = withdrawAddress.call{value: amount}("");
require(sent, "Failed to Withdraw User.");
// Update Total Balance
_totalAmount = _totalAmount.sub(amount);
}
/**
* @dev Withdraw admin Balance to admin account, only Governance call it
*/
function adminWithdraw(address adminAddress, uint256 amount)
public
payable
onlyGovernance
{
require(
_totalAmount >= amount,
"User Balance should be more than withdraw amount."
);
// Send ETH From Contract to Admin Address
(bool sent, ) = adminAddress.call{value: amount}("");
require(sent, "Failed to Withdraw User.");
// Update Total Balance
_totalAmount = _totalAmount.sub(amount);
}
/**
* @dev EmergencyWithdraw when need to update contract and then will restore it
*/
function emergencyWithdraw() public payable onlyGovernance {
require(_totalAmount > 0, "Can't send over total ETH amount.");
uint256 amount = _totalAmount;
address governanceAddress = governance();
// Send ETH From Contract to Governance Address
(bool sent, ) = governanceAddress.call{value: amount}("");
require(sent, "Failed to Withdraw Governance");
// Update Total Balance
_totalAmount = 0;
}
}
{
"compilationTarget": {
"Dice.sol": "Dice"
},
"evmVersion": "istanbul",
"libraries": {},
"metadata": {
"bytecodeHash": "ipfs"
},
"optimizer": {
"enabled": true,
"runs": 200
},
"remappings": []
}
[{"inputs":[],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousGovernance","type":"address"},{"indexed":true,"internalType":"address","name":"newGovernance","type":"address"}],"name":"GovernanceshipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"inputs":[{"internalType":"address","name":"adminAddress","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"adminWithdraw","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"userAddress","type":"address"}],"name":"balanceOfPlayer","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"deposit","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"emergencyWithdraw","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"getTotalBalance","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"governance","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newGovernance","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"withdrawAddress","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"userWithdraw","outputs":[],"stateMutability":"payable","type":"function"},{"stateMutability":"payable","type":"receive"}]