Hi, thanks for all your guideline. I followed the tutorial but have the same error on bscscan for days...
The contract was compiled and published with remix on the binance smart chain.
Contract : 0x43d70ff309819b20acf56448341d23046035de8b
Code :
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/**
* @title SafeMathUint
* @dev Math operations with safety TKNcks that revert on error
*/
library SafeMathUint {
function toInt256Safe(uint256 a) internal pure returns (int256) {
int256 b = int256(a);
require(b >= 0, "toInt256Safe: B LESS THAN ZERO");
return b;
}
}
pragma solidity ^0.8.0;
/*
MIT License
Copyright (c) 2018 requestnetwork
Copyright (c) 2018 Fragments, Inc.
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
*/
/**
* @title SafeMathInt
* @dev Math operations for int256 with overflow safety TKNcks.
*/
library SafeMathInt {
int256 private constant MIN_INT256 = int256(1) << 255;
int256 private constant MAX_INT256 = ~(int256(1) << 255);
/**
* @dev Multiplies two int256 variables and fails on overflow.
*/
function mul(int256 a, int256 b) internal pure returns (int256) {
int256 c = a * b;
// Detect overflow when multiplying MIN_INT256 with -1
require(
c != MIN_INT256 || (a & MIN_INT256) != (b & MIN_INT256),
"mul: A B C combi values invalid with MIN_INT256"
);
require((b == 0) || (c / b == a), "mul: A B C combi values invalid");
return c;
}
/**
* @dev Division of two int256 variables and fails on overflow.
*/
function div(int256 a, int256 b) internal pure returns (int256) {
// Prevent overflow when dividing MIN_INT256 by -1
require(b != -1 || a != MIN_INT256, "div: b == 1 OR A == MIN_INT256");
// Solidity already throws when dividing by 0.
return a / b;
}
/**
* @dev Subtracts two int256 variables and fails on overflow.
*/
function sub(int256 a, int256 b) internal pure returns (int256) {
int256 c = a - b;
require(
(b >= 0 && c <= a) || (b < 0 && c > a),
"sub: A B C combi values invalid"
);
return c;
}
/**
* @dev Adds two int256 variables and fails on overflow.
*/
function add(int256 a, int256 b) internal pure returns (int256) {
int256 c = a + b;
require(
(b >= 0 && c >= a) || (b < 0 && c < a),
"add: A B C combi values invalid"
);
return c;
}
/**
* @dev Converts to absolute value, and fails on overflow.
*/
function abs(int256 a) internal pure returns (int256) {
require(a != MIN_INT256, "abs: A EQUAL MIN INT256");
return a < 0 ? -a : a;
}
function toUint256Safe(int256 a) internal pure returns (uint256) {
require(a >= 0, "toUint256Safe: A LESS THAN ZERO");
return uint256(a);
}
}
pragma solidity ^0.8.0;
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 TKNaper 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 untouTKNd) 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 untouTKNd) 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 untouTKNd) 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 untouTKNd) 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;
}
}
library IterableMapping {
// Iterable mapping from address to uint;
struct Map {
address[] keys;
mapping(address => uint256) values;
mapping(address => uint256) indexOf;
mapping(address => bool) inserted;
}
function get(Map storage map, address key) public view returns (uint256) {
return map.values[key];
}
function getIndexOfKey(Map storage map, address key)
public
view
returns (int256)
{
if (!map.inserted[key]) {
return -1;
}
return int256(map.indexOf[key]);
}
function getKeyAtIndex(Map storage map, uint256 index)
public
view
returns (address)
{
return map.keys[index];
}
function size(Map storage map) public view returns (uint256) {
return map.keys.length;
}
function set(
Map storage map,
address key,
uint256 val
) public {
if (map.inserted[key]) {
map.values[key] = val;
} else {
map.inserted[key] = true;
map.values[key] = val;
map.indexOf[key] = map.keys.length;
map.keys.push(key);
}
}
function remove(Map storage map, address key) public {
if (!map.inserted[key]) {
return;
}
delete map.inserted[key];
delete map.values[key];
uint256 index = map.indexOf[key];
uint256 lastIndex = map.keys.length - 1;
address lastKey = map.keys[lastIndex];
map.indexOf[lastKey] = index;
delete map.indexOf[key];
map.keys[index] = lastKey;
map.keys.pop();
}
}
// OpenZeppelin Contracts v4.3.2 (utils/Address.sol)
pragma solidity ^0.8.0;
/**
* @dev Collection of functions related to the address type
*/
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies on extcodesize, which returns 0 for contracts in
// construction, since the code is only stored at the end of the
// constructor execution.
uint256 size;
assembly {
size := extcodesize(account)
}
return size > 0;
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(
address(this).balance >= amount,
"Address: insufficient balance"
);
(bool success, ) = recipient.call{value: amount}("");
require(
success,
"Address: unable to send value, recipient may have reverted"
);
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain `call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data)
internal
returns (bytes memory)
{
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(
address target,
bytes memory data,
uint256 value
) internal returns (bytes memory) {
return
functionCallWithValue(
target,
data,
value,
"Address: low-level call with value failed"
);
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(
address target,
bytes memory data,
uint256 value,
string memory errorMessage
) internal returns (bytes memory) {
require(
address(this).balance >= value,
"Address: insufficient balance for call"
);
require(isContract(target), "Address: call to non-contract");
(bool success, bytes memory returndata) = target.call{value: value}(
data
);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data)
internal
view
returns (bytes memory)
{
return
functionStaticCall(
target,
data,
"Address: low-level static call failed"
);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(
address target,
bytes memory data,
string memory errorMessage
) internal view returns (bytes memory) {
require(isContract(target), "Address: static call to non-contract");
(bool success, bytes memory returndata) = target.staticcall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(address target, bytes memory data)
internal
returns (bytes memory)
{
return
functionDelegateCall(
target,
data,
"Address: low-level delegate call failed"
);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
require(isContract(target), "Address: delegate call to non-contract");
(bool success, bytes memory returndata) = target.delegatecall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
* revert reason using the provided one.
*
* _Available since v4.3._
*/
function verifyCallResult(
bool success,
bytes memory returndata,
string memory errorMessage
) internal pure returns (bytes memory) {
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
interface IUniswapV2Router01 {
function factory() external pure returns (address);
function WETH() external pure returns (address);
function addLiquidity(
address tokenA,
address tokenB,
uint256 amountADesired,
uint256 amountBDesired,
uint256 amountAMin,
uint256 amountBMin,
address to,
uint256 deadline
)
external
returns (
uint256 amountA,
uint256 amountB,
uint256 liquidity
);
function addLiquidityETH(
address token,
uint256 amountTokenDesired,
uint256 amountTokenMin,
uint256 amountETHMin,
address to,
uint256 deadline
)
external
payable
returns (
uint256 amountToken,
uint256 amountETH,
uint256 liquidity
);
function removeLiquidity(
address tokenA,
address tokenB,
uint256 liquidity,
uint256 amountAMin,
uint256 amountBMin,
address to,
uint256 deadline
) external returns (uint256 amountA, uint256 amountB);
function removeLiquidityETH(
address token,
uint256 liquidity,
uint256 amountTokenMin,
uint256 amountETHMin,
address to,
uint256 deadline
) external returns (uint256 amountToken, uint256 amountETH);
function removeLiquidityWithPermit(
address tokenA,
address tokenB,
uint256 liquidity,
uint256 amountAMin,
uint256 amountBMin,
address to,
uint256 deadline,
bool approveMax,
uint8 v,
bytes32 r,
bytes32 s
) external returns (uint256 amountA, uint256 amountB);
function removeLiquidityETHWithPermit(
address token,
uint256 liquidity,
uint256 amountTokenMin,
uint256 amountETHMin,
address to,
uint256 deadline,
bool approveMax,
uint8 v,
bytes32 r,
bytes32 s
) external returns (uint256 amountToken, uint256 amountETH);
function swapExactTokensForTokens(
uint256 amountIn,
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external returns (uint256[] memory amounts);
function swapTokensForExactTokens(
uint256 amountOut,
uint256 amountInMax,
address[] calldata path,
address to,
uint256 deadline
) external returns (uint256[] memory amounts);
function swapExactETHForTokens(
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external payable returns (uint256[] memory amounts);
function swapTokensForExactETH(
uint256 amountOut,
uint256 amountInMax,
address[] calldata path,
address to,
uint256 deadline
) external returns (uint256[] memory amounts);
function swapExactTokensForETH(
uint256 amountIn,
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external returns (uint256[] memory amounts);
function swapETHForExactTokens(
uint256 amountOut,
address[] calldata path,
address to,
uint256 deadline
) external payable returns (uint256[] memory amounts);
function quote(
uint256 amountA,
uint256 reserveA,
uint256 reserveB
) external pure returns (uint256 amountB);
function getAmountOut(
uint256 amountIn,
uint256 reserveIn,
uint256 reserveOut
) external pure returns (uint256 amountOut);
function getAmountIn(
uint256 amountOut,
uint256 reserveIn,
uint256 reserveOut
) external pure returns (uint256 amountIn);
function getAmountsOut(uint256 amountIn, address[] calldata path)
external
view
returns (uint256[] memory amounts);
function getAmountsIn(uint256 amountOut, address[] calldata path)
external
view
returns (uint256[] memory amounts);
}
// pragma solidity >=0.6.2;
interface IUniswapV2Router02 is IUniswapV2Router01 {
function removeLiquidityETHSupportingFeeOnTransferTokens(
address token,
uint256 liquidity,
uint256 amountTokenMin,
uint256 amountETHMin,
address to,
uint256 deadline
) external returns (uint256 amountETH);
function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens(
address token,
uint256 liquidity,
uint256 amountTokenMin,
uint256 amountETHMin,
address to,
uint256 deadline,
bool approveMax,
uint8 v,
bytes32 r,
bytes32 s
) external returns (uint256 amountETH);
function swapExactTokensForTokensSupportingFeeOnTransferTokens(
uint256 amountIn,
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external;
function swapExactETHForTokensSupportingFeeOnTransferTokens(
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external payable;
function swapExactTokensForETHSupportingFeeOnTransferTokens(
uint256 amountIn,
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external;
}
interface IUniswapV2Pair {
event Approval(
address indexed owner,
address indexed spender,
uint256 value
);
event Transfer(address indexed from, address indexed to, uint256 value);
function name() external pure returns (string memory);
function symbol() external pure returns (string memory);
function decimals() external pure returns (uint8);
function totalSupply() external view returns (uint256);
function balanceOf(address owner) external view returns (uint256);
function allowance(address owner, address spender)
external
view
returns (uint256);
function approve(address spender, uint256 value) external returns (bool);
function transfer(address to, uint256 value) external returns (bool);
function transferFrom(
address from,
address to,
uint256 value
) external returns (bool);
function DOMAIN_SEPARATOR() external view returns (bytes32);
function PERMIT_TYPEHASH() external pure returns (bytes32);
function nonces(address owner) external view returns (uint256);
function permit(
address owner,
address spender,
uint256 value,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
) external;
event Mint(address indexed sender, uint256 amount0, uint256 amount1);
event Burn(
address indexed sender,
uint256 amount0,
uint256 amount1,
address indexed to
);
event Swap(
address indexed sender,
uint256 amount0In,
uint256 amount1In,
uint256 amount0Out,
uint256 amount1Out,
address indexed to
);
event Sync(uint112 reserve0, uint112 reserve1);
function MINIMUM_LIQUIDITY() external pure returns (uint256);
function factory() external view returns (address);
function token0() external view returns (address);
function token1() external view returns (address);
function getReserves()
external
view
returns (
uint112 reserve0,
uint112 reserve1,
uint32 blockTimestampLast
);
function price0CumulativeLast() external view returns (uint256);
function price1CumulativeLast() external view returns (uint256);
function kLast() external view returns (uint256);
function mint(address to) external returns (uint256 liquidity);
function burn(address to)
external
returns (uint256 amount0, uint256 amount1);
function swap(
uint256 amount0Out,
uint256 amount1Out,
address to,
bytes calldata data
) external;
function skim(address to) external;
function sync() external;
function initialize(address, address) external;
}
interface IUniswapV2Factory {
event PairCreated(
address indexed token0,
address indexed token1,
address pair,
uint256
);
function feeTo() external view returns (address);
function feeToSetter() external view returns (address);
function getPair(address tokenA, address tokenB)
external
view
returns (address pair);
function allPairs(uint256) external view returns (address pair);
function allPairsLength() external view returns (uint256);
function createPair(address tokenA, address tokenB)
external
returns (address pair);
function setFeeTo(address) external;
function setFeeToSetter(address) external;
}
pragma solidity ^0.8.0;
/*
* @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 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) {
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;
}
}
contract Ownable is Context {
address private _owner;
event OwnershipTransferred(
address indexed previousOwner,
address indexed newOwner
);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor() {
address msgSender = _msgSender();
_owner = msgSender;
emit OwnershipTransferred(address(0), msgSender);
}
/**
* @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
* `onlyOwner` 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 onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(
newOwner != address(0),
"Ownable: new owner is the zero address"
);
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
}
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount)
external
returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender)
external
view
returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: 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
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(
address sender,
address recipient,
uint256 amount
) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(
address indexed owner,
address indexed spender,
uint256 value
);
}
/**
* @dev Interface for the optional metadata functions from the ERC20 standard.
*
* _Available since v4.1._
*/
interface IERC20Metadata is IERC20 {
/**
* @dev Returns the name of the token.
*/
function name() external view returns (string memory);
/**
* @dev Returns the symbol of the token.
*/
function symbol() external view returns (string memory);
/**
* @dev Returns the decimals places of the token.
*/
function decimals() external view returns (uint8);
}
pragma solidity ^0.8.0;
/**
* @dev Implementation of the {IERC20} interface.
*
* This implementation is agnostic to the way tokens are created. This means
* that a supply mechanism has to be added in a derived contract using {_mint}.
* For a generic mechanism see {ERC20PresetMinterPauser}.
*
* TIP: For a detailed writeup see our guide
* https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
* to implement supply mechanisms].
*
* We have followed general OpenZeppelin guidelines: functions revert instead
* of returning `false` on failure. This behavior is nonetheless conventional
* and does not conflict with the expectations of ERC20 applications.
*
* Additionally, an {Approval} event is emitted on calls to {transferFrom}.
* This allows applications to reconstruct the allowance for all accounts just
* by listening to said events. Other implementations of the EIP may not emit
* these events, as it isn't required by the specification.
*
* Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
* functions have been added to mitigate the well-known issues around setting
* allowances. See {IERC20-approve}.
*/
contract ERC20 is Context, IERC20, IERC20Metadata {
using SafeMath for uint256;
mapping(address => uint256) private _balances;
mapping(address => mapping(address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
/**
* @dev Sets the values for {name} and {symbol}.
*
* The default value of {decimals} is 18. To select a different value for
* {decimals} you should overload it.
*
* All two of these values are immutable: they can only be set once during
* construction.
*/
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
}
/**
* @dev Returns the name of the token.
*/
function name() public view virtual override returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
/**
* @dev Returns the number of decimals used to get its user representation.
* For example, if `decimals` equals `2`, a balance of `505` tokens should
* be displayed to a user as `5,05` (`505 / 10 ** 2`).
*
* Tokens usually opt for a value of 18, imitating the relationship between
* Ether and Wei. This is the value {ERC20} uses, unless this function is
* overridden;
*
* NOTE: This information is only used for _display_ purposes: it in
* no way affects any of the arithmetic of the contract, including
* {IERC20-balanceOf} and {IERC20-transfer}.
*/
function decimals() public view virtual override returns (uint8) {
return 18;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public view virtual override returns (uint256) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(address account)
public
view
virtual
override
returns (uint256)
{
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `recipient` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address recipient, uint256 amount)
public
virtual
override
returns (bool)
{
_transfer(_msgSender(), recipient, amount);
return true;
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(address owner, address spender)
public
view
virtual
override
returns (uint256)
{
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount)
public
virtual
override
returns (bool)
{
_approve(_msgSender(), spender, amount);
return true;
}
/**
* @dev See {IERC20-transferFrom}.
*
* Emits an {Approval} event indicating the updated allowance. This is not
* required by the EIP. See the note at the beginning of {ERC20}.
*
* Requirements:
*
* - `sender` and `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
* - the caller must have allowance for ``sender``'s tokens of at least
* `amount`.
*/
function transferFrom(
address sender,
address recipient,
uint256 amount
) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
_approve(
sender,
_msgSender(),
_allowances[sender][_msgSender()].sub(
amount,
"ERC20: transfer amount exceeds allowance"
)
);
return true;
}
/**
* @dev Atomically increases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function increaseAllowance(address spender, uint256 addedValue)
public
virtual
returns (bool)
{
_approve(
_msgSender(),
spender,
_allowances[_msgSender()][spender].add(addedValue)
);
return true;
}
/**
* @dev Atomically decreases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `spender` must have allowance for the caller of at least
* `subtractedValue`.
*/
function decreaseAllowance(address spender, uint256 subtractedValue)
public
virtual
returns (bool)
{
_approve(
_msgSender(),
spender,
_allowances[_msgSender()][spender].sub(
subtractedValue,
"ERC20: decreased allowance below zero"
)
);
return true;
}
/**
* @dev Moves tokens `amount` from `sender` to `recipient`.
*
* This is internal function is equivalent to {transfer}, and can be used to
* e.g. implement automatic token fees, slashing mechanisms, etc.
*
* Emits a {Transfer} event.
*
* Requirements:
*
* - `sender` cannot be the zero address.
* - `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
*/
function _transfer(
address sender,
address recipient,
uint256 amount
) internal virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(sender, recipient, amount);
_balances[sender] = _balances[sender].sub(
amount,
"ERC20: transfer amount exceeds balance"
);
_balances[recipient] = _balances[recipient].add(amount);
emit Transfer(sender, recipient, amount);
}
/** @dev Creates `amount` tokens and assigns them to `account`, increasing
* the total supply.
*
* Emits a {Transfer} event with `from` set to the zero address.
*
* Requirements:
*
* - `account` cannot be the zero address.
*/
function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(0), account, amount);
_totalSupply = _totalSupply.add(amount);
_balances[account] = _balances[account].add(amount);
emit Transfer(address(0), account, amount);
}
/**
* @dev Destroys `amount` tokens from `account`, reducing the
* total supply.
*
* Emits a {Transfer} event with `to` set to the zero address.
*
* Requirements:
*
* - `account` cannot be the zero address.
* - `account` must have at least `amount` tokens.
*/
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
_beforeTokenTransfer(account, address(0), amount);
_balances[account] = _balances[account].sub(
amount,
"ERC20: burn amount exceeds balance"
);
_totalSupply = _totalSupply.sub(amount);
emit Transfer(account, address(0), amount);
}
/**
* @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
*
* This internal function is equivalent to `approve`, and can be used to
* e.g. set automatic allowances for certain subsystems, etc.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `owner` cannot be the zero address.
* - `spender` cannot be the zero address.
*/
function _approve(
address owner,
address spender,
uint256 amount
) internal virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
/**
* @dev Hook that is called before any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* will be to transferred to `to`.
* - when `from` is zero, `amount` tokens will be minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
}
// OpenZeppelin Contracts v4.3.2 (token/ERC20/utils/SafeERC20.sol)
pragma solidity ^0.8.0;
/**
* @title SafeERC20
* @dev Wrappers around ERC20 operations that throw on failure (when the token
* contract returns false). Tokens that return no value (and instead revert or
* throw on failure) are also supported, non-reverting calls are assumed to be
* successful.
* To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
* which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
*/
library SafeERC20 {
using Address for address;
function safeTransfer(
IERC20 token,
address to,
uint256 value
) internal {
_callOptionalReturn(
token,
abi.encodeWithSelector(token.transfer.selector, to, value)
);
}
function safeTransferFrom(
IERC20 token,
address from,
address to,
uint256 value
) internal {
_callOptionalReturn(
token,
abi.encodeWithSelector(token.transferFrom.selector, from, to, value)
);
}
/**
* @dev Deprecated. This function has issues similar to the ones found in
* {IERC20-approve}, and its usage is discouraged.
*
* Whenever possible, use {safeIncreaseAllowance} and
* {safeDecreaseAllowance} instead.
*/
function safeApprove(
IERC20 token,
address spender,
uint256 value
) internal {
// safeApprove should only be called when setting an initial allowance,
// or when resetting it to zero. To increase and decrease it, use
// 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
require(
(value == 0) || (token.allowance(address(this), spender) == 0),
"SafeERC20: approve from non-zero to non-zero allowance"
);
_callOptionalReturn(
token,
abi.encodeWithSelector(token.approve.selector, spender, value)
);
}
function safeIncreaseAllowance(
IERC20 token,
address spender,
uint256 value
) internal {
uint256 newAllowance = token.allowance(address(this), spender) + value;
_callOptionalReturn(
token,
abi.encodeWithSelector(
token.approve.selector,
spender,
newAllowance
)
);
}
function safeDecreaseAllowance(
IERC20 token,
address spender,
uint256 value
) internal {
unchecked {
uint256 oldAllowance = token.allowance(address(this), spender);
require(
oldAllowance >= value,
"SafeERC20: decreased allowance below zero"
);
uint256 newAllowance = oldAllowance - value;
_callOptionalReturn(
token,
abi.encodeWithSelector(
token.approve.selector,
spender,
newAllowance
)
);
}
}
/**
* @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
* on the return value: the return value is optional (but if data is returned, it must not be false).
* @param token The token targeted by the call.
* @param data The call data (encoded using abi.encode or one of its variants).
*/
function _callOptionalReturn(IERC20 token, bytes memory data) private {
// We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
// we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that
// the target address contains contract code and also asserts for success in the low-level call.
bytes memory returndata = address(token).functionCall(
data,
"SafeERC20: low-level call failed"
);
if (returndata.length > 0) {
// Return data is optional
require(
abi.decode(returndata, (bool)),
"SafeERC20: ERC20 operation did not succeed"
);
}
}
}
// OpenZeppelin Contracts v4.3.2 (finance/PaymentSplitter.sol)
pragma solidity ^0.8.0;
/**
* @title PaymentSplitter
* @dev This contract allows to split Ether payments among a group of accounts. The sender does not need to be aware
* that the Ether will be split in this way, since it is handled transparently by the contract.
*
* The split can be in equal parts or in any other arbitrary proportion. The way this is specified is by assigning each
* account to a number of shares. Of all the Ether that this contract receives, each account will then be able to claim
* an amount proportional to the percentage of total shares they were assigned.
*
* `PaymentSplitter` follows a _pull payment_ model. This means that payments are not automatically forwarded to the
* accounts but kept in this contract, and the actual transfer is triggered as a separate step by calling the {release}
* function.
*
* NOTE: This contract assumes that ERC20 tokens will behave similarly to native tokens (Ether). Rebasing tokens, and
* tokens that apply fees during transfers, are likely to not be supported as expected. If in doubt, we encourage you
* to run tests before sending real value to this contract.
*/
contract PaymentSplitter is Context {
event PayeeAdded(address account, uint256 shares);
event PaymentReleased(address to, uint256 amount);
event ERC20PaymentReleased(
IERC20 indexed token,
address to,
uint256 amount
);
event PaymentReceived(address from, uint256 amount);
uint256 private _totalShares;
uint256 private _totalReleased;
mapping(address => uint256) private _shares;
mapping(address => uint256) private _released;
address[] private _payees;
mapping(IERC20 => uint256) private _erc20TotalReleased;
mapping(IERC20 => mapping(address => uint256)) private _erc20Released;
/**
* @dev Creates an instance of `PaymentSplitter` where each account in `payees` is assigned the number of shares at
* the matching position in the `shares` array.
*
* All addresses in `payees` must be non-zero. Both arrays must have the same non-zero length, and there must be no
* duplicates in `payees`.
*/
constructor(address[] memory payees, uint256[] memory shares_) payable {
require(
payees.length == shares_.length,
"PaymentSplitter: payees and shares length mismatch"
);
require(payees.length > 0, "PaymentSplitter: no payees");
for (uint256 i = 0; i < payees.length; i++) {
_addPayee(payees[i], shares_[i]);
}
}
/**
* @dev The Ether received will be logged with {PaymentReceived} events. Note that these events are not fully
* reliable: it's possible for a contract to receive Ether without triggering this function. This only affects the
* reliability of the events, and not the actual splitting of Ether.
*
* To learn more about this see the Solidity documentation for
* https://solidity.readthedocs.io/en/latest/contracts.html#fallback-function[fallback
* functions].
*/
receive() external payable virtual {
emit PaymentReceived(_msgSender(), msg.value);
}
/**
* @dev Getter for the total shares held by payees.
*/
function totalShares() public view returns (uint256) {
return _totalShares;
}
/**
* @dev Getter for the total amount of Ether already released.
*/
function totalReleased() public view returns (uint256) {
return _totalReleased;
}
/**
* @dev Getter for the total amount of `token` already released. `token` should be the address of an IERC20
* contract.
*/
function totalReleased(IERC20 token) public view returns (uint256) {
return _erc20TotalReleased[token];
}
/**
* @dev Getter for the amount of shares held by an account.
*/
function shares(address account) public view returns (uint256) {
return _shares[account];
}
/**
* @dev Getter for the amount of Ether already released to a payee.
*/
function released(address account) public view returns (uint256) {
return _released[account];
}
/**
* @dev Getter for the amount of `token` tokens already released to a payee. `token` should be the address of an
* IERC20 contract.
*/
function released(IERC20 token, address account)
public
view
returns (uint256)
{
return _erc20Released[token][account];
}
/**
* @dev Getter for the address of the payee number `index`.
*/
function payee(uint256 index) public view returns (address) {
return _payees[index];
}
/**
* @dev Triggers a transfer to `account` of the amount of Ether they are owed, according to their percentage of the
* total shares and their previous withdrawals.
*/
function release(address payable account) public virtual {
require(_shares[account] > 0, "PaymentSplitter: account has no shares");
uint256 totalReceived = address(this).balance + totalReleased();
uint256 payment = _pendingPayment(
account,
totalReceived,
released(account)
);
require(payment != 0, "PaymentSplitter: account is not due payment");
_released[account] += payment;
_totalReleased += payment;
Address.sendValue(account, payment);
emit PaymentReleased(account, payment);
}
/**
* @dev Triggers a transfer to `account` of the amount of `token` tokens they are owed, according to their
* percentage of the total shares and their previous withdrawals. `token` must be the address of an IERC20
* contract.
*/
function release(IERC20 token, address account) public virtual {
require(_shares[account] > 0, "PaymentSplitter: account has no shares");
uint256 totalReceived = token.balanceOf(address(this)) +
totalReleased(token);
uint256 payment = _pendingPayment(
account,
totalReceived,
released(token, account)
);
require(payment != 0, "PaymentSplitter: account is not due payment");
_erc20Released[token][account] += payment;
_erc20TotalReleased[token] += payment;
SafeERC20.safeTransfer(token, account, payment);
emit ERC20PaymentReleased(token, account, payment);
}
/**
* @dev internal logic for computing the pending payment of an `account` given the token historical balances and
* already released amounts.
*/
function _pendingPayment(
address account,
uint256 totalReceived,
uint256 alreadyReleased
) private view returns (uint256) {
return
(totalReceived * _shares[account]) / _totalShares - alreadyReleased;
}
/**
* @dev Add a new payee to the contract.
* @param account The address of the payee to add.
* @param shares_ The number of shares owned by the payee.
*/
function _addPayee(address account, uint256 shares_) private {
require(
account != address(0),
"PaymentSplitter: account is the zero address"
);
require(shares_ > 0, "PaymentSplitter: shares are 0");
require(
_shares[account] == 0,
"PaymentSplitter: account already has shares"
);
_payees.push(account);
_shares[account] = shares_;
_totalShares = _totalShares + shares_;
emit PayeeAdded(account, shares_);
}
}
contract NODERewardManagement {
using SafeMath for uint256;
using IterableMapping for IterableMapping.Map;
struct NodeEntity {
string name;
uint256 creationTime;
uint256 lastClaimTime;
uint256 rewardAvailable;
}
IterableMapping.Map private nodeOwners;
mapping(address => NodeEntity[]) private _nodesOfUser;
uint256 public nodePrice;
uint256 public rewardPerNode;
uint256 public claimTime;
bool public autoDistri = true;
bool public distribution = false;
uint256 public gasForDistribution = 300000;
uint256 public lastDistributionCount = 0;
uint256 public lastIndexProcessed = 0;
uint256 public totalNodesCreated = 0;
uint256 public totalRewardStaked = 0;
constructor(
uint256 _nodePrice,
uint256 _rewardPerNode,
uint256 _claimTime
) {
nodePrice = _nodePrice;
rewardPerNode = _rewardPerNode;
claimTime = _claimTime;
}
function distributeRewards(uint256 gas, uint256 rewardNode)
private
returns (
uint256,
uint256,
uint256
)
{
distribution = true;
uint256 numberOfnodeOwners = nodeOwners.keys.length;
require(numberOfnodeOwners > 0, "DISTRI REWARDS: NO NODE OWNERS");
if (numberOfnodeOwners == 0) {
return (0, 0, lastIndexProcessed);
}
uint256 gasUsed = 0;
uint256 gasLeft = gasleft();
uint256 newGasLeft;
uint256 localLastIndex = lastIndexProcessed;
uint256 iterations = 0;
uint256 newClaimTime = block.timestamp;
uint256 nodesCount;
uint256 claims = 0;
NodeEntity[] storage nodes;
NodeEntity storage _node;
while (gasUsed < gas && iterations < numberOfnodeOwners) {
localLastIndex++;
if (localLastIndex >= nodeOwners.keys.length) {
localLastIndex = 0;
}
nodes = _nodesOfUser[nodeOwners.keys[localLastIndex]];
nodesCount = nodes.length;
for (uint256 i = 0; i < nodesCount; i++) {
_node = nodes[i];
if (claimable(_node)) {
_node.rewardAvailable += rewardNode;
_node.lastClaimTime = newClaimTime;
totalRewardStaked += rewardNode;
claims++;
}
}
iterations++;
newGasLeft = gasleft();
if (gasLeft > newGasLeft) {
gasUsed = gasUsed.add(gasLeft.sub(newGasLeft));
}
gasLeft = newGasLeft;
}
lastIndexProcessed = localLastIndex;
distribution = false;
return (iterations, claims, lastIndexProcessed);
}
function createNode(address account, string memory nodeName) external {
require(
isNameAvailable(account, nodeName),
"CREATE NODE: Name not available"
);
_nodesOfUser[account].push(
NodeEntity({
name: nodeName,
creationTime: block.timestamp,
lastClaimTime: block.timestamp,
rewardAvailable: rewardPerNode
})
);
nodeOwners.set(account, _nodesOfUser[account].length);
totalNodesCreated++;
if (autoDistri && !distribution) {
distributeRewards(gasForDistribution, rewardPerNode);
}
}
function isNameAvailable(address account, string memory nodeName)
private
view
returns (bool)
{
NodeEntity[] memory nodes = _nodesOfUser[account];
for (uint256 i = 0; i < nodes.length; i++) {
if (keccak256(bytes(nodes[i].name)) == keccak256(bytes(nodeName))) {
return false;
}
}
return true;
}
function _burn(uint256 index) internal {
require(index < nodeOwners.size());
nodeOwners.remove(nodeOwners.getKeyAtIndex(index));
}
function _addReward(address account, uint256 amount) external {
//add last reward node ?
}
function _getNodeWithCreatime(
NodeEntity[] storage nodes,
uint256 _creationTime
) private view returns (NodeEntity storage) {
uint256 numberOfNodes = nodes.length;
require(
numberOfNodes > 0,
"CASHOUT ERROR: You don't have nodes to cash-out"
);
bool found = false;
int256 index = binary_search(nodes, 0, numberOfNodes, _creationTime);
uint256 validIndex;
if (index >= 0) {
found = true;
validIndex = uint256(index);
}
require(found, "NODE SEARCH: No NODE Found with this blocktime");
return nodes[validIndex];
}
function binary_search(
NodeEntity[] memory arr,
uint256 low,
uint256 high,
uint256 x
) private view returns (int256) {
if (high >= low) {
uint256 mid = (high + low).div(2);
if (arr[mid].creationTime == x) {
return int256(mid);
} else if (arr[mid].creationTime > x) {
return binary_search(arr, low, mid - 1, x);
} else {
return binary_search(arr, mid + 1, high, x);
}
} else {
return -1;
}
}
function _cashoutNodeReward(address account, uint256 _creationTime)
external
returns (uint256)
{
require(_creationTime > 0, "NODE: CREATIME must be higher than zero");
NodeEntity[] storage nodes = _nodesOfUser[account];
uint256 numberOfNodes = nodes.length;
require(
numberOfNodes > 0,
"CASHOUT ERROR: You don't have nodes to cash-out"
);
NodeEntity storage node = _getNodeWithCreatime(nodes, _creationTime);
uint256 rewardNode = node.rewardAvailable;
node.rewardAvailable = 0;
return rewardNode;
}
function _cashoutAllNodesReward(address account)
external
returns (uint256)
{
NodeEntity[] storage nodes = _nodesOfUser[account];
uint256 nodesCount = nodes.length;
require(nodesCount > 0, "NODE: CREATIME must be higher than zero");
NodeEntity storage _node;
uint256 rewardsTotal = 0;
for (uint256 i = 0; i < nodesCount; i++) {
_node = nodes[i];
rewardsTotal += _node.rewardAvailable;
_node.rewardAvailable = 0;
}
return rewardsTotal;
}
function claimable(NodeEntity memory node) private view returns (bool) {
return node.lastClaimTime + claimTime <= block.timestamp;
}
function _getRewardAmountOf(address account)
external
view
returns (uint256)
{
require(isNodeOwner(account), "GET REWARD OF: NO NODE OWNER");
uint256 nodesCount;
uint256 rewardCount = 0;
NodeEntity[] storage nodes = _nodesOfUser[account];
nodesCount = nodes.length;
for (uint256 i = 0; i < nodesCount; i++) {
rewardCount += nodes[i].rewardAvailable;
}
return rewardCount;
}
function _getRewardAmountOf(address account, uint256 _creationTime)
external
view
returns (uint256)
{
require(isNodeOwner(account), "GET REWARD OF: NO NODE OWNER");
require(_creationTime > 0, "NODE: CREATIME must be higher than zero");
NodeEntity[] storage nodes = _nodesOfUser[account];
uint256 numberOfNodes = nodes.length;
require(
numberOfNodes > 0,
"CASHOUT ERROR: You don't have nodes to cash-out"
);
NodeEntity storage node = _getNodeWithCreatime(nodes, _creationTime);
uint256 rewardNode = node.rewardAvailable;
return rewardNode;
}
function _getNodeRewardAmountOf(address account, uint256 creationTime)
external
view
returns (uint256)
{
return
_getNodeWithCreatime(_nodesOfUser[account], creationTime)
.rewardAvailable;
}
function _getNodesNames(address account)
external
view
returns (string memory)
{
require(isNodeOwner(account), "GET NAMES: NO NODE OWNER");
NodeEntity[] memory nodes = _nodesOfUser[account];
uint256 nodesCount = nodes.length;
NodeEntity memory _node;
string memory names = nodes[0].name;
string memory separator = "#";
for (uint256 i = 1; i < nodesCount; i++) {
_node = nodes[i];
names = string(abi.encodePacked(names, separator, _node.name));
}
return names;
}
function _getNodesCreationTime(address account)
external
view
returns (string memory)
{
require(isNodeOwner(account), "GET CREATIME: NO NODE OWNER");
NodeEntity[] memory nodes = _nodesOfUser[account];
uint256 nodesCount = nodes.length;
NodeEntity memory _node;
string memory _creationTimes = uint2str(nodes[0].creationTime);
string memory separator = "#";
for (uint256 i = 1; i < nodesCount; i++) {
_node = nodes[i];
_creationTimes = string(
abi.encodePacked(
_creationTimes,
separator,
uint2str(_node.creationTime)
)
);
}
return _creationTimes;
}
function _getNodesRewardAvailable(address account)
external
view
returns (string memory)
{
require(isNodeOwner(account), "GET REWARD: NO NODE OWNER");
NodeEntity[] memory nodes = _nodesOfUser[account];
uint256 nodesCount = nodes.length;
NodeEntity memory _node;
string memory _rewardsAvailable = uint2str(nodes[0].rewardAvailable);
string memory separator = "#";
for (uint256 i = 1; i < nodesCount; i++) {
_node = nodes[i];
_rewardsAvailable = string(
abi.encodePacked(
_rewardsAvailable,
separator,
uint2str(_node.rewardAvailable)
)
);
}
return _rewardsAvailable;
}
function _getNodesLastClaimTime(address account)
external
view
returns (string memory)
{
require(isNodeOwner(account), "LAST CLAIME TIME: NO NODE OWNER");
NodeEntity[] memory nodes = _nodesOfUser[account];
uint256 nodesCount = nodes.length;
NodeEntity memory _node;
string memory _lastClaimTimes = uint2str(nodes[0].lastClaimTime);
string memory separator = "#";
for (uint256 i = 1; i < nodesCount; i++) {
_node = nodes[i];
_lastClaimTimes = string(
abi.encodePacked(
_lastClaimTimes,
separator,
uint2str(_node.lastClaimTime)
)
);
}
return _lastClaimTimes;
}
function uint2str(uint256 _i)
internal
pure
returns (string memory _uintAsString)
{
if (_i == 0) {
return "0";
}
uint256 j = _i;
uint256 len;
while (j != 0) {
len++;
j /= 10;
}
bytes memory bstr = new bytes(len);
uint256 k = len;
while (_i != 0) {
k = k - 1;
uint8 temp = (48 + uint8(_i - (_i / 10) * 10));
bytes1 b1 = bytes1(temp);
bstr[k] = b1;
_i /= 10;
}
return string(bstr);
}
function _changeNodePrice(uint256 newNodePrice) external {
nodePrice = newNodePrice;
}
function _changeRewardPerNode(uint256 newPrice) external {
rewardPerNode = newPrice;
}
function _changeClaimTime(uint256 newTime) external {
claimTime = newTime;
}
function _changeAutoDistri(bool newMode) external {
autoDistri = newMode;
}
function _changeGasDistri(uint256 newGasDistri) external {
gasForDistribution = newGasDistri;
}
function _getNodeNumberOf(address account) public view returns (uint256) {
return nodeOwners.get(account);
}
function isNodeOwner(address account) private view returns (bool) {
return nodeOwners.get(account) > 0;
}
function _isNodeOwner(address account) external view returns (bool) {
return isNodeOwner(account);
}
function _distributeRewards()
external
returns (
uint256,
uint256,
uint256
)
{
return distributeRewards(gasForDistribution, rewardPerNode);
}
}
pragma solidity ^0.8.0;
contract DOGERING is ERC20, Ownable, PaymentSplitter {
using SafeMath for uint256;
NODERewardManagement public nodeRewardManagement;
IUniswapV2Router02 public uniswapV2Router;
address public uniswapV2Pair;
address public futurUsePool;
address public distributionPool;
address public deadWallet = 0x000000000000000000000000000000000000dEaD;
uint256 public rewardsFee;
uint256 public liquidityPoolFee;
uint256 public futurFee;
uint256 public totalFees;
uint256 public cashoutFee;
uint256 private rwSwap;
bool private swapping = false;
bool private swapLiquify = false;
uint256 public swapTokensAmount;
mapping(address => bool) public _isBlacklisted;
mapping(address => bool) public automatedMarketMakerPairs;
event UpdateUniswapV2Router(
address indexed newAddress,
address indexed oldAddress
);
event SetAutomatedMarketMakerPair(address indexed pair, bool indexed value);
event LiquidityWalletUpdated(
address indexed newLiquidityWallet,
address indexed oldLiquidityWallet
);
event SwapAndLiquify(
uint256 tokensSwapped,
uint256 ethReceived,
uint256 tokensIntoLiqudity
);
constructor(
address[] memory payees,
uint256[] memory shares,
address[] memory addresses,
uint256[] memory balances,
uint256[] memory fees,
uint256 swapAmount,
uint256 nodePrice,
uint256 rewardPerNode,
uint256 claimTime,
address uniV2Router
) ERC20("DOGERING", "DOGERING") PaymentSplitter(payees, shares) {
require(nodePrice > 0, "CONSTR: nodePrice amount incorrect");
require(rewardPerNode > 0, "CONSTR: rewardPerNode amount incorrect");
require(claimTime > 0, "CONSTR: claimTime incorrect");
nodeRewardManagement = new NODERewardManagement(
nodePrice * (10**18),
rewardPerNode * (10**18),
claimTime
);
futurUsePool = addresses[4];
distributionPool = addresses[5];
require(
futurUsePool != address(0) && distributionPool != address(0),
"FUTUR & REWARD ADDRESS CANNOT BE ZERO"
);
require(uniV2Router != address(0), "ROUTER CANNOT BE ZERO");
IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(uniV2Router);
address _uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory())
.createPair(address(this), _uniswapV2Router.WETH());
uniswapV2Router = _uniswapV2Router;
uniswapV2Pair = _uniswapV2Pair;
_setAutomatedMarketMakerPair(_uniswapV2Pair, true);
require(
fees[0] != 0 && fees[1] != 0 && fees[2] != 0 && fees[3] != 0,
"CONSTR: Fees equal 0"
);
futurFee = fees[0];
rewardsFee = fees[1];
liquidityPoolFee = fees[2];
cashoutFee = fees[3];
rwSwap = fees[4];
totalFees = rewardsFee.add(liquidityPoolFee).add(futurFee);
require(
addresses.length > 0 && balances.length > 0,
"CONSTR: addresses array length must be greater than zero"
);
require(
addresses.length == balances.length,
"CONSTR: addresses arrays length mismatch"
);
for (uint256 i = 0; i < addresses.length; i++) {
_mint(addresses[i], balances[i] * (10**18));
}
require(
totalSupply() == 20456743e18,
"CONSTR: totalSupply must equal 20 million"
);
require(swapAmount > 0, "CONSTR: Swap amount incorrect");
swapTokensAmount = swapAmount * (10**18);
}
function updateUniswapV2Router(address newAddress) public onlyOwner {
require(
newAddress != address(uniswapV2Router),
"TKN: The router already has that address"
);
emit UpdateUniswapV2Router(newAddress, address(uniswapV2Router));
uniswapV2Router = IUniswapV2Router02(newAddress);
address _uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory())
.createPair(address(this), uniswapV2Router.WETH());
uniswapV2Pair = _uniswapV2Pair;
}
function updateSwapTokensAmount(uint256 newVal) external onlyOwner {
swapTokensAmount = newVal;
}
function updateFuturWall(address payable wall) external onlyOwner {
futurUsePool = wall;
}
function updateRewardsWall(address payable wall) external onlyOwner {
distributionPool = wall;
}
function updateRewardsFee(uint256 value) external onlyOwner {
rewardsFee = value;
totalFees = rewardsFee.add(liquidityPoolFee).add(futurFee);
}
function updateLiquiditFee(uint256 value) external onlyOwner {
liquidityPoolFee = value;
totalFees = rewardsFee.add(liquidityPoolFee).add(futurFee);
}
function updateFuturFee(uint256 value) external onlyOwner {
futurFee = value;
totalFees = rewardsFee.add(liquidityPoolFee).add(futurFee);
}
function updateCashoutFee(uint256 value) external onlyOwner {
cashoutFee = value;
}
function updateRwSwapFee(uint256 value) external onlyOwner {
rwSwap = value;
}
function setAutomatedMarketMakerPair(address pair, bool value)
public
onlyOwner
{
require(
pair != uniswapV2Pair,
"TKN: The PancakeSwap pair cannot be removed from automatedMarketMakerPairs"
);
_setAutomatedMarketMakerPair(pair, value);
}
function blacklistMalicious(address account, bool value)
external
onlyOwner
{
_isBlacklisted[account] = value;
}
function _setAutomatedMarketMakerPair(address pair, bool value) private {
require(
automatedMarketMakerPairs[pair] != value,
"TKN: Automated market maker pair is already set to that value"
);
automatedMarketMakerPairs[pair] = value;
emit SetAutomatedMarketMakerPair(pair, value);
}
function _transfer(
address from,
address to,
uint256 amount
) internal override {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
require(
!_isBlacklisted[from] && !_isBlacklisted[to],
"Blacklisted address"
);
super._transfer(from, to, amount);
}
function swapAndSendToFee(address destination, uint256 tokens) private {
uint256 initialETHBalance = address(this).balance;
swapTokensForEth(tokens);
uint256 newBalance = (address(this).balance).sub(initialETHBalance);
payable(destination).transfer(newBalance);
}
function swapAndLiquify(uint256 tokens) private {
uint256 half = tokens.div(2);
uint256 otherHalf = tokens.sub(half);
uint256 initialBalance = address(this).balance;
swapTokensForEth(half);
uint256 newBalance = address(this).balance.sub(initialBalance);
addLiquidity(otherHalf, newBalance);
emit SwapAndLiquify(half, newBalance, otherHalf);
}
function swapTokensForEth(uint256 tokenAmount) private {
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = uniswapV2Router.WETH();
_approve(address(this), address(uniswapV2Router), tokenAmount);
uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(
tokenAmount,
0, // accept any amount of ETH
path,
address(this),
block.timestamp
);
}
function addLiquidity(uint256 tokenAmount, uint256 ethAmount) private {
// approve token transfer to cover all possible scenarios
_approve(address(this), address(uniswapV2Router), tokenAmount);
// add the liquidity
uniswapV2Router.addLiquidityETH{value: ethAmount}(
address(this),
tokenAmount,
0, // slippage is unavoidable
0, // slippage is unavoidable
address(0),
block.timestamp
);
}
function createNodeWithTokens(string memory name) public {
require(
bytes(name).length > 3 && bytes(name).length < 32,
"NODE CREATION: NAME SIZE INVALID"
);
address sender = _msgSender();
require(
sender != address(0),
"NODE CREATION: creation from the zero address"
);
require(!_isBlacklisted[sender], "NODE CREATION: Blacklisted address");
require(
sender != futurUsePool && sender != distributionPool,
"NODE CREATION: futur and rewardsPool cannot create node"
);
uint256 nodePrice = nodeRewardManagement.nodePrice();
require(
balanceOf(sender) >= nodePrice,
"NODE CREATION: Balance too low for creation."
);
uint256 contractTokenBalance = balanceOf(address(this));
bool swapAmountOk = contractTokenBalance >= swapTokensAmount;
if (
swapAmountOk &&
swapLiquify &&
!swapping &&
sender != owner() &&
!automatedMarketMakerPairs[sender]
) {
swapping = true;
uint256 futurTokens = contractTokenBalance.mul(futurFee).div(100);
swapAndSendToFee(futurUsePool, futurTokens);
uint256 rewardsPoolTokens = contractTokenBalance
.mul(rewardsFee)
.div(100);
uint256 rewardsTokenstoSwap = rewardsPoolTokens.mul(rwSwap).div(
100
);
swapAndSendToFee(distributionPool, rewardsTokenstoSwap);
super._transfer(
address(this),
distributionPool,
rewardsPoolTokens.sub(rewardsTokenstoSwap)
);
uint256 swapTokens = contractTokenBalance.mul(liquidityPoolFee).div(
100
);
swapAndLiquify(swapTokens);
swapTokensForEth(balanceOf(address(this)));
swapping = false;
}
super._transfer(sender, address(this), nodePrice);
nodeRewardManagement.createNode(sender, name);
}
function cashoutReward(uint256 blocktime) public {
address sender = _msgSender();
require(sender != address(0), "CSHT: creation from the zero address");
require(!_isBlacklisted[sender], "MANIA CSHT: Blacklisted address");
require(
sender != futurUsePool && sender != distributionPool,
"CSHT: futur and rewardsPool cannot cashout rewards"
);
uint256 rewardAmount = nodeRewardManagement._getRewardAmountOf(
sender,
blocktime
);
require(
rewardAmount > 0,
"CSHT: You don't have enough reward to cash out"
);
if (swapLiquify) {
uint256 feeAmount;
if (cashoutFee > 0) {
feeAmount = rewardAmount.mul(cashoutFee).div(100);
swapAndSendToFee(futurUsePool, feeAmount);
}
rewardAmount -= feeAmount;
}
super._transfer(distributionPool, sender, rewardAmount);
nodeRewardManagement._cashoutNodeReward(sender, blocktime);
}
function cashoutAll() public {
address sender = _msgSender();
require(
sender != address(0),
"MANIA CSHT: creation from the zero address"
);
require(!_isBlacklisted[sender], "MANIA CSHT: Blacklisted address");
require(
sender != futurUsePool && sender != distributionPool,
"MANIA CSHT: futur and rewardsPool cannot cashout rewards"
);
uint256 rewardAmount = nodeRewardManagement._getRewardAmountOf(sender);
require(
rewardAmount > 0,
"MANIA CSHT: You don't have enough reward to cash out"
);
if (swapLiquify) {
uint256 feeAmount;
if (cashoutFee > 0) {
feeAmount = rewardAmount.mul(cashoutFee).div(100);
swapAndSendToFee(futurUsePool, feeAmount);
}
rewardAmount -= feeAmount;
}
super._transfer(distributionPool, sender, rewardAmount);
nodeRewardManagement._cashoutAllNodesReward(sender);
}
function changeSwapLiquify(bool newVal) public onlyOwner {
swapLiquify = newVal;
}
function getNodeNumberOf(address account) public view returns (uint256) {
return nodeRewardManagement._getNodeNumberOf(account);
}
function getRewardAmountOf(address account)
public
view
onlyOwner
returns (uint256)
{
return nodeRewardManagement._getRewardAmountOf(account);
}
function getRewardAmount() public view returns (uint256) {
require(_msgSender() != address(0), "SENDER CAN'T BE ZERO");
require(
nodeRewardManagement._isNodeOwner(_msgSender()),
"NO NODE OWNER"
);
return nodeRewardManagement._getRewardAmountOf(_msgSender());
}
function changeNodePrice(uint256 newNodePrice) public onlyOwner {
nodeRewardManagement._changeNodePrice(newNodePrice);
}
function getNodePrice() public view returns (uint256) {
return nodeRewardManagement.nodePrice();
}
function changeRewardPerNode(uint256 newPrice) public onlyOwner {
nodeRewardManagement._changeRewardPerNode(newPrice);
}
function getRewardPerNode() public view returns (uint256) {
return nodeRewardManagement.rewardPerNode();
}
function changeClaimTime(uint256 newTime) public onlyOwner {
nodeRewardManagement._changeClaimTime(newTime);
}
function getClaimTime() public view returns (uint256) {
return nodeRewardManagement.claimTime();
}
function changeAutoDistri(bool newMode) public onlyOwner {
nodeRewardManagement._changeAutoDistri(newMode);
}
function getAutoDistri() public view returns (bool) {
return nodeRewardManagement.autoDistri();
}
function changeGasDistri(uint256 newGasDistri) public onlyOwner {
nodeRewardManagement._changeGasDistri(newGasDistri);
}
function getGasDistri() public view returns (uint256) {
return nodeRewardManagement.gasForDistribution();
}
function getDistriCount() public view returns (uint256) {
return nodeRewardManagement.lastDistributionCount();
}
function getNodesNames() public view returns (string memory) {
require(_msgSender() != address(0), "SENDER CAN'T BE ZERO");
require(
nodeRewardManagement._isNodeOwner(_msgSender()),
"NO NODE OWNER"
);
return nodeRewardManagement._getNodesNames(_msgSender());
}
function getNodesCreatime() public view returns (string memory) {
require(_msgSender() != address(0), "SENDER CAN'T BE ZERO");
require(
nodeRewardManagement._isNodeOwner(_msgSender()),
"NO NODE OWNER"
);
return nodeRewardManagement._getNodesCreationTime(_msgSender());
}
function getNodesRewards() public view returns (string memory) {
require(_msgSender() != address(0), "SENDER CAN'T BE ZERO");
require(
nodeRewardManagement._isNodeOwner(_msgSender()),
"NO NODE OWNER"
);
return nodeRewardManagement._getNodesRewardAvailable(_msgSender());
}
function getNodesLastClaims() public view returns (string memory) {
require(_msgSender() != address(0), "SENDER CAN'T BE ZERO");
require(
nodeRewardManagement._isNodeOwner(_msgSender()),
"NO NODE OWNER"
);
return nodeRewardManagement._getNodesLastClaimTime(_msgSender());
}
function distributeRewards()
public
onlyOwner
returns (
uint256,
uint256,
uint256
)
{
return nodeRewardManagement._distributeRewards();
}
function publiDistriRewards() public {
nodeRewardManagement._distributeRewards();
}
function getTotalRewardStaked() public view returns (uint256) {
return nodeRewardManagement.totalRewardStaked();
}
function getTotalNodesCreated() public view returns (uint256) {
return nodeRewardManagement.totalNodesCreated();
}
}
ABI :
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
Library 1 : IterableMapping 0x59d0f15b10c3701598f4f4cb3575d1d25e561eda
Thanks for your help
