3、合约代码
一、合约地址
- MetaDao IDO 合约地址如下：
0x3856fd2bE035f15b348029dd21D90Fd85fD5323a
MetaDAO Bank 合约地址：
0xAfBb637862D9cd601F12cA8963A8c3Db082aeA96
2、查看IDO 合约代码：
https://bscscan.com/address/0x3856fd2bE035f15b348029dd21D90Fd85fD5323a#code
3、代码
// Some codeso
/**
*Submitted for verification at BscScan.com on 2022-12-01
*/
// SPDX-License-Identifier: GPL-3.0
// MMMMMMMM MMMMMMMM tttt DDDDDDDDDDDDD
// M:::::::M M:::::::M ttt:::t D::::::::::::DDD
// M::::::::M M::::::::M t:::::t D:::::::::::::::DD
// M:::::::::M M:::::::::M t:::::t DDD:::::DDDDD:::::D
// M::::::::::M M::::::::::M eeeeeeeeeeee ttttttt:::::ttttttt aaaaaaaaaaaaa D:::::D D:::::D aaaaaaaaaaaaa ooooooooooo
// M:::::::::::M M:::::::::::M ee::::::::::::ee t:::::::::::::::::t a::::::::::::a D:::::D D:::::D a::::::::::::a oo:::::::::::oo
// M:::::::M::::M M::::M:::::::M e::::::eeeee:::::eet:::::::::::::::::t aaaaaaaaa:::::a D:::::D D:::::D aaaaaaaaa:::::ao:::::::::::::::o
// M::::::M M::::M M::::M M::::::Me::::::e e:::::etttttt:::::::tttttt a::::a D:::::D D:::::D a::::ao:::::ooooo:::::o
// M::::::M M::::M::::M M::::::Me:::::::eeeee::::::e t:::::t aaaaaaa:::::a D:::::D D:::::D aaaaaaa:::::ao::::o o::::o
// M::::::M M:::::::M M::::::Me:::::::::::::::::e t:::::t aa::::::::::::a D:::::D D:::::D aa::::::::::::ao::::o o::::o
// M::::::M M:::::M M::::::Me::::::eeeeeeeeeee t:::::t a::::aaaa::::::a D:::::D D:::::Da::::aaaa::::::ao::::o o::::o
// M::::::M MMMMM M::::::Me:::::::e t:::::t tttttta::::a a:::::a D:::::D D:::::Da::::a a:::::ao::::o o::::o
// M::::::M M::::::Me::::::::e t::::::tttt:::::ta::::a a:::::a DDD:::::DDDDD:::::D a::::a a:::::ao:::::ooooo:::::o
// M::::::M M::::::M e::::::::eeeeeeee tt::::::::::::::ta:::::aaaa::::::a D:::::::::::::::DD a:::::aaaa::::::ao:::::::::::::::o
// M::::::M M::::::M ee:::::::::::::e tt:::::::::::tt a::::::::::aa:::aD::::::::::::DDD a::::::::::aa:::aoo:::::::::::oo
// MMMMMMMM MMMMMMMM eeeeeeeeeeeeee ttttttttttt aaaaaaaaaa aaaaDDDDDDDDDDDDD aaaaaaaaaa aaaa ooooooooooo
pragma solidity ^0.8.0;
/**
* @dev Contract module that helps prevent reentrant calls to a function.
*
* Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
* available, which can be applied to functions to make sure there are no nested
* (reentrant) calls to them.
*
* Note that because there is a single `nonReentrant` guard, functions marked as
* `nonReentrant` may not call one another. This can be worked around by making
* those functions `private`, and then adding `external` `nonReentrant` entry
* points to them.
*
* TIP: If you would like to learn more about reentrancy and alternative ways
* to protect against it, check out our blog post
* https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
*/
abstract contract ReentrancyGuard {
// Booleans are more expensive than uint256 or any type that takes up a full
// word because each write operation emits an extra SLOAD to first read the
// slot's contents, replace the bits taken up by the boolean, and then write
// back. This is the compiler's defense against contract upgrades and
// pointer aliasing, and it cannot be disabled.
// The values being non-zero value makes deployment a bit more expensive,
// but in exchange the refund on every call to nonReentrant will be lower in
// amount. Since refunds are capped to a percentage of the total
// transaction's gas, it is best to keep them low in cases like this one, to
// increase the likelihood of the full refund coming into effect.
uint256 private constant _NOT_ENTERED = 1;
uint256 private constant _ENTERED = 2;
uint256 private _status;
constructor() {
_status = _NOT_ENTERED;
}
/**
* @dev Prevents a contract from calling itself, directly or indirectly.
* Calling a `nonReentrant` function from another `nonReentrant`
* function is not supported. It is possible to prevent this from happening
* by making the `nonReentrant` function external, and making it call a
* `private` function that does the actual work.
*/
modifier nonReentrant() {
// On the first call to nonReentrant, _notEntered will be true
require(_status != _ENTERED, "ReentrancyGuard: reentrant call");
// Any calls to nonReentrant after this point will fail
_status = _ENTERED;
_;
// By storing the original value once again, a refund is triggered (see
// https://eips.ethereum.org/EIPS/eip-2200)
_status = _NOT_ENTERED;
}
}
// File: openzeppelin-solidity/contracts/utils/math/SafeMath.sol
// OpenZeppelin Contracts (last updated v4.6.0) (utils/math/SafeMath.sol)
pragma solidity ^0.8.0;
// CAUTION
// This version of SafeMath should only be used with Solidity 0.8 or later,
// because it relies on the compiler's built in overflow checks.
/**
* @dev Wrappers over Solidity's arithmetic operations.
*
* NOTE: `SafeMath` is generally not needed starting with Solidity 0.8, since the compiler
* now has built in overflow checking.
*/
library SafeMath {
/**
* @dev Returns the addition of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
uint256 c = a + b;
if (c < a) return (false, 0);
return (true, c);
}
}
/**
* @dev Returns the subtraction of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
if (b > a) return (false, 0);
return (true, a - b);
}
}
/**
* @dev Returns the multiplication of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
// 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 (true, 0);
uint256 c = a * b;
if (c / a != b) return (false, 0);
return (true, c);
}
}
/**
* @dev Returns the division of two unsigned integers, with a division by zero flag.
*
* _Available since v3.4._
*/
function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
if (b == 0) return (false, 0);
return (true, a / b);
}
}
/**
* @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
*
* _Available since v3.4._
*/
function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
if (b == 0) return (false, 0);
return (true, a % b);
}
}
/**
* @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) {
return a + b;
}
/**
* @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 a - b;
}
/**
* @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) {
return a * b;
}
/**
* @dev Returns the integer division of two unsigned integers, reverting on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator.
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return a / b;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* reverting 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 a % b;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {trySub}.
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(
uint256 a,
uint256 b,
string memory errorMessage
) internal pure returns (uint256) {
unchecked {
require(b <= a, errorMessage);
return a - b;
}
}
/**
* @dev Returns the integer division of two unsigned integers, reverting 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) {
unchecked {
require(b > 0, errorMessage);
return a / b;
}
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* reverting with custom message when dividing by zero.
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {tryMod}.
*
* 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) {
unchecked {
require(b > 0, errorMessage);
return a % b;
}
}
}
// File: openzeppelin-solidity/contracts/utils/Address.sol
// OpenZeppelin Contracts (last updated v4.5.0) (utils/Address.sol)
pragma solidity ^0.8.1;
/**
* @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
* ====
*
* [IMPORTANT]
* ====
* You shouldn't rely on `isContract` to protect against flash loan attacks!
*
* Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
* like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
* constructor.
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies on extcodesize/address.code.length, which returns 0
// for contracts in construction, since the code is only stored at the end
// of the constructor execution.
return account.code.length > 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);
}
}
}
}
// File: openzeppelin-solidity/contracts/utils/Context.sol
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)
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 calldata) {
return msg.data;
}
}
// File: openzeppelin-solidity/contracts/access/Ownable.sol
// OpenZeppelin Contracts v4.4.1 (access/Ownable.sol)
pragma solidity ^0.8.0;
/**
* @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
* `onlyOwner`, which can be applied to your functions to restrict their use to
* the owner.
*/
abstract 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() {
_transferOwnership(_msgSender());
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view virtual 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 {
_transferOwnership(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");
_transferOwnership(newOwner);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Internal function without access restriction.
*/
function _transferOwnership(address newOwner) internal virtual {
address oldOwner = _owner;
_owner = newOwner;
emit OwnershipTransferred(oldOwner, newOwner);
}
}
// File: openzeppelin-solidity/contracts/security/Pausable.sol
// OpenZeppelin Contracts v4.4.1 (security/Pausable.sol)
pragma solidity ^0.8.0;
/**
* @dev Contract module which allows children to implement an emergency stop
* mechanism that can be triggered by an authorized account.
*
* This module is used through inheritance. It will make available the
* modifiers `whenNotPaused` and `whenPaused`, which can be applied to
* the functions of your contract. Note that they will not be pausable by
* simply including this module, only once the modifiers are put in place.
*/
abstract contract Pausable is Context {
/**
* @dev Emitted when the pause is triggered by `account`.
*/
event Paused(address account);
/**
* @dev Emitted when the pause is lifted by `account`.
*/
event Unpaused(address account);
bool private _paused;
/**
* @dev Initializes the contract in unpaused state.
*/
constructor() {
_paused = false;
}
/**
* @dev Returns true if the contract is paused, and false otherwise.
*/
function paused() public view virtual returns (bool) {
return _paused;
}
/**
* @dev Modifier to make a function callable only when the contract is not paused.
*
* Requirements:
*
* - The contract must not be paused.
*/
modifier whenNotPaused() {
require(!paused(), "Pausable: paused");
_;
}
/**
* @dev Modifier to make a function callable only when the contract is paused.
*
* Requirements:
*
* - The contract must be paused.
*/
modifier whenPaused() {
require(paused(), "Pausable: not paused");
_;
}
/**
* @dev Triggers stopped state.
*
* Requirements:
*
* - The contract must not be paused.
*/
function _pause() internal virtual whenNotPaused {
_paused = true;
emit Paused(_msgSender());
}
/**
* @dev Returns to normal state.
*
* Requirements:
*
* - The contract must be paused.
*/
function _unpause() internal virtual whenPaused {
_paused = false;
emit Unpaused(_msgSender());
}
}
// File: openzeppelin-solidity/contracts/token/ERC20/IERC20.sol
// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)
pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
/**
* @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 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 `to`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address to, 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 `from` to `to` 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 from,
address to,
uint256 amount
) external returns (bool);
}
// File: openzeppelin-solidity/contracts/token/ERC20/extensions/IERC20Metadata.sol
// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)
pragma solidity ^0.8.0;
/**
* @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);
}
// File: openzeppelin-solidity/contracts/token/ERC20/ERC20.sol
// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/ERC20.sol)
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 Contracts guidelines: functions revert
* instead 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 {
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:
*
* - `to` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address to, uint256 amount) public virtual override returns (bool) {
address owner = _msgSender();
_transfer(owner, to, 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}.
*
* NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on
* `transferFrom`. This is semantically equivalent to an infinite approval.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount) public virtual override returns (bool) {
address owner = _msgSender();
_approve(owner, 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}.
*
* NOTE: Does not update the allowance if the current allowance
* is the maximum `uint256`.
*
* Requirements:
*
* - `from` and `to` cannot be the zero address.
* - `from` must have a balance of at least `amount`.
* - the caller must have allowance for ``from``'s tokens of at least
* `amount`.
*/
function transferFrom(
address from,
address to,
uint256 amount
) public virtual override returns (bool) {
address spender = _msgSender();
_spendAllowance(from, spender, amount);
_transfer(from, to, amount);
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) {
address owner = _msgSender();
_approve(owner, spender, allowance(owner, spender) + 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) {
address owner = _msgSender();
uint256 currentAllowance = allowance(owner, spender);
require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
unchecked {
_approve(owner, spender, currentAllowance - subtractedValue);
}
return true;
}
/**
* @dev Moves `amount` of tokens from `sender` to `recipient`.
*
* This 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:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `from` must have a balance of at least `amount`.
*/
function _transfer(
address from,
address to,
uint256 amount
) internal virtual {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(from, to, amount);
uint256 fromBalance = _balances[from];
require(fromBalance >= amount, "ERC20: transfer amount exceeds balance");
unchecked {
_balances[from] = fromBalance - amount;
}
_balances[to] += amount;
emit Transfer(from, to, amount);
_afterTokenTransfer(from, to, 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 += amount;
_balances[account] += amount;
emit Transfer(address(0), account, amount);
_afterTokenTransfer(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);
uint256 accountBalance = _balances[account];
require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
unchecked {
_balances[account] = accountBalance - amount;
}
_totalSupply -= amount;
emit Transfer(account, address(0), amount);
_afterTokenTransfer(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 Updates `owner` s allowance for `spender` based on spent `amount`.
*
* Does not update the allowance amount in case of infinite allowance.
* Revert if not enough allowance is available.
*
* Might emit an {Approval} event.
*/
function _spendAllowance(
address owner,
address spender,
uint256 amount
) internal virtual {
uint256 currentAllowance = allowance(owner, spender);
if (currentAllowance != type(uint256).max) {
require(currentAllowance >= amount, "ERC20: insufficient allowance");
unchecked {
_approve(owner, spender, currentAllowance - 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 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 {}
/**
* @dev Hook that is called after any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* has been transferred to `to`.
* - when `from` is zero, `amount` tokens have been minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens have been 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 _afterTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
}
pragma solidity ^0.8.4;
interface BestLogic {
function setUpline(address _sender,address _upline) external;
function getIsUser(address _addr) external view returns (bool);
function getTeams(address _addr) external view returns(address[] memory);
function getVIP(address _addr) external view returns(uint8);
function getUpline(address _addr) external view returns(address);
function getPartnerInfoOne(uint256 _PartnerID) external view returns(address,uint256,bool);
function getPartnerID() external view returns(uint);
event SetUplineLog(address indexed _addr, address indexed _upline,uint256 lastime);
}
interface FoundationWallect {
function withdraw()external ;
}
interface CommunityAlliance {
function withdraw()external ;
}
contract IDO is Ownable,Pausable, ReentrancyGuard{
using SafeMath for uint256;
using Address for address;
BestLogic public bestLogic;
FoundationWallect private foundationWallectContract;
CommunityAlliance private CommunityAllianceContract;
uint256 private startTime;
uint8 private DAYS;
uint256 private MTDPrice;
uint256 private usdt;
bool public START = true;
uint256 private USDTotal;
uint256 private MTDTotal;
address private FoundationWallet;
uint256 private foundationWallectContractBalanceOfMax;
uint constant DAY_IN_SECONDS = 86400;
uint256 refOne = 50;
uint256 refTwo = 20;
address public USDT = 0x55d398326f99059fF775485246999027B3197955; //USDT Binance-Peg BUSD Token
struct Tarif {
uint256 MaxPeople;
uint256 MinimumInvestment;
}
struct Deposit {
uint8 tarif;
uint256 time;
}
struct User {
uint8 ID;
bool reflow;
uint256 reflowUSDT;
uint256 InvestmentUSDTotal;
uint256 PromotionUSDTAmount;
uint256 BuyMTDTotal;
Deposit[] deposits;
}
mapping(address => User) users;
Tarif[] public tarifs;
event DepositLog(uint8 _tarif,address indexed _addr, address indexed _upline, uint256 _USDTAmount, uint256 lastTime);
event updateIDLog(address indexed _addr,uint8 _tarif);
constructor() {
startTime = block.timestamp;
DAYS = 90;
MTDPrice = 100;
tarifs.push(Tarif(0, 100000000000000000000000));
tarifs.push(Tarif(0,50000000000000000000000));
tarifs.push(Tarif(0, 30000000000000000000000));
tarifs.push(Tarif(0,10000000000000000000000));
tarifs.push(Tarif(21, 1000000000000000000000));
tarifs.push(Tarif(108,500000000000000000000));
tarifs.push(Tarif(500, 300000000000000000000));
tarifs.push(Tarif(1250, 100000000000000000000));
tarifs.push(Tarif(9999999,30000000000000000000));
}
function pause() public onlyOwner {
_pause();
}
function unpause() public onlyOwner {
_unpause();
}
receive() external payable {}
fallback() external payable {}
function deposit(uint8 _tarif,address _upline,uint256 _USDTAmount) public payable nonReentrant whenNotPaused {
require(START,"project not started");
uint256 _tarifLength = tarifs.length;
require(_tarif <= _tarifLength,"Product does not exist");
address _addr = msg.sender;
require(_addr != address(0) && _upline != address(0),"Invalid address entered");
uint256 _over = tarifs[_tarif].MaxPeople;
require(_over != 0,"no seats");
uint256 _mininv = tarifs[_tarif].MinimumInvestment;
require(_USDTAmount >=_mininv,"Less Then the min investment");
uint256 allowanceAmount = IERC20(USDT).allowance(msg.sender, address(this));
require(allowanceAmount >= _USDTAmount,"Check the token allowance");
uint256 balance = IERC20(USDT).balanceOf(_addr);
require(balance >= _USDTAmount,"Insufficient USDT balance");
if( getUpline(_addr) == address(0)){
if(getIsUser(_upline)) {
setUpline(_addr,_upline);
_updataReferralIncome(_addr, _USDTAmount);
users[_addr].deposits.push(Deposit({
tarif: _tarif,
time :block.timestamp
}));
_updataID(_addr, _tarif);
_updataMTD(_addr, _USDTAmount);
_updataUSDT(_addr, _USDTAmount);
setPeople(_tarif);
}else{
setUpline(_addr,owner());
_updataReferralIncome(_addr, _USDTAmount);
users[_addr].deposits.push(Deposit({
tarif: _tarif,
time :block.timestamp
}));
_updataID(_addr, _tarif);
_updataMTD(_addr, _USDTAmount);
_updataUSDT(_addr, _USDTAmount);
setPeople(_tarif);
}
}else {
_updataReferralIncome(_addr, _USDTAmount);
users[_addr].deposits.push(Deposit({
tarif: _tarif,
time :block.timestamp
}));
_updataID(_addr, _tarif);
_updataMTD(_addr, _USDTAmount);
_updataUSDT(_addr, _USDTAmount);
setPeople(_tarif);
}
uint256 foundationWallectContractBalanceOf = ERC20(USDT).balanceOf(address(foundationWallectContract));
if(foundationWallectContractBalanceOf >= foundationWallectContractBalanceOfMax){
foundationWallectContract.withdraw();
}
CommunityAllianceContract.withdraw();
emit DepositLog(_tarif,_addr,_upline,_USDTAmount,block.timestamp);
}
function getFromcontractTo(address _to,uint256 _amount) public onlyOwner {
require(_to != address(0),"Address cannot be empty");
IERC20(USDT).transfer(_to,_amount);
}
function _updataID(address _addr, uint8 _tarif) private {
uint _ID = users[_addr].ID;
if(_ID == 0){
users[_addr].ID = _tarif + 1;
emit updateIDLog(_addr, _tarif);
}else if( _tarif <= _ID - 1 ) {
users[_addr].ID = _tarif + 1;
emit updateIDLog(_addr, _tarif);
}
}
function _updataUSDT(address _addr,uint256 _USDT) private {
users[_addr].InvestmentUSDTotal += _USDT ;
USDTotal += _USDT;
}
function _updataMTD(address _addr,uint256 _USDT) private {
uint256 _amount = _USDT * MTDPrice;
users[_addr].BuyMTDTotal += _amount ;
MTDTotal += _amount;
}
function _updataReferralIncome(address _addr,uint256 _USDT) private {
address _upline = getUpline(_addr);
uint256 _uplineVip = getVIP(_upline);
if (_uplineVip <= 2) {
if(users[_upline].reflow) {
uint256 _rate = refOne / 2;
uint256 _userAmount = _USDT.mul(_rate).div(100);
IERC20(USDT).transferFrom(msg.sender,address(this),_USDT);
IERC20(USDT).transfer(_upline,_userAmount);
_updatereflowUSDT(_upline,_userAmount);
_updatePromotionUSDTAmount(_upline,_userAmount);
}else {
uint256 _userAmount = _USDT.mul(refOne).div(100);
IERC20(USDT).transferFrom(msg.sender,address(this),_USDT);
IERC20(USDT).transfer(_upline,_userAmount);
_updatePromotionUSDTAmount(_upline,_userAmount);
}
}else {
if(users[_upline].reflow) {
uint256 _rate = refTwo / 2;
uint256 _userAmount = _USDT.mul(_rate).div(100);
uint256 _FoundationWalletAmount = _USDT.mul(45).div(100) - _userAmount;
IERC20(USDT).transferFrom(msg.sender,address(this),_USDT);
IERC20(USDT).transfer(_upline,_userAmount);
IERC20(USDT).transfer(FoundationWallet,_FoundationWalletAmount);
_updatereflowUSDT(_upline,_userAmount);
_updatePromotionUSDTAmount(_upline,_userAmount);
}else {
uint256 _userAmount = _USDT.mul(refTwo).div(100);
uint256 _FoundationWalletAmount = _USDT.mul(50).div(100) - _userAmount;
IERC20(USDT).transferFrom(msg.sender,address(this),_USDT);
IERC20(USDT).transfer(_upline,_userAmount);
IERC20(USDT).transfer(FoundationWallet,_FoundationWalletAmount);
_updatePromotionUSDTAmount(_upline,_userAmount);
}
}
}
function _updatePromotionUSDTAmount( address _addr,uint256 _amount) private {
users[_addr].PromotionUSDTAmount += _amount;
}
function _updatereflowUSDT( address _addr,uint256 _amount) private {
users[_addr].reflowUSDT += _amount;
}
function setPeople(uint8 _index) private {
tarifs[_index].MaxPeople -= 1;
}
function setFoundationWallet(address _FoundationWallet) public onlyOwner {
FoundationWallet = _FoundationWallet;
}
function setBestLogic(BestLogic _addr) public onlyOwner {
bestLogic = _addr;
}
function setTarif(uint256 _index,uint256 _MaxPeople, uint256 _MinimumInvestment ) public onlyOwner {
tarifs[_index].MaxPeople = _MaxPeople ;
tarifs[_index].MinimumInvestment = _MinimumInvestment;
}
function setFoundationWallect(FoundationWallect _addr) public onlyOwner {
foundationWallectContract = _addr;
}
function setCommunity(CommunityAlliance _addr) public onlyOwner {
CommunityAllianceContract = _addr;
}
function setUSDTAddress(address _addr) public onlyOwner {
USDT = _addr;
}
function setWallectContractBalanceOfMax(uint256 _max) public onlyOwner {
foundationWallectContractBalanceOfMax = _max;
}
function setUserInfo(address _addr, uint8 _ID,bool _reflow,uint256 _BuyMTDTotal) public onlyOwner {
users[_addr].ID = _ID;
users[_addr].reflow = _reflow;
users[_addr].BuyMTDTotal =_BuyMTDTotal;
}
function setUpline(address _addr, address _upline) private {
bestLogic.setUpline(_addr,_upline);
}
function setStartTime(uint256 _startTime) public onlyOwner {
startTime = _startTime;
}
function setDay(uint8 _day) public onlyOwner {
require(_day > 0,"must be greater than 0");
DAYS = _day;
}
function setStart(bool _startStatus) public onlyOwner {
START = _startStatus;
}
function setU(uint256 _U) external onlyOwner {
require(_U >= 0,"must be greater than 0");
usdt = _U;
}
function setMTDPrice(uint256 _MTDPrice) public onlyOwner {
MTDPrice = _MTDPrice;
}
function setrefRate(uint256 _refOne,uint256 _refTwo) public onlyOwner {
refOne = _refOne;
refTwo = _refTwo;
}
function getUpline(address _addr) public view returns(address) {
require(_addr != address(0),"Address cannot be empty");
return bestLogic.getUpline(_addr);
}
function getUSDTBalance() public view returns(uint256) {
return IERC20(USDT).balanceOf(msg.sender);
}
function getTeams(address _addr) public view returns(address[] memory) {
require(_addr != address(0),"Invalid address entered");
return bestLogic.getTeams(_addr);
}
function getVIP(address _addr) public view returns(uint8) {
require(_addr != address(0),"Invalid address entered");
return bestLogic.getVIP(_addr);
}
function getIsUser(address _addr) public view returns (bool) {
require(_addr != address(0),"Invalid address entered");
return bestLogic.getIsUser(_addr);
}
function getUSDTDeposit(address _addr) public view returns(uint256) {
require(_addr != address(0));
// require(getIsUser(_addr),"address not registered");
return users[_addr].InvestmentUSDTotal;
}
function getdep(address _addr) public view returns (Deposit[] memory deps) {
User memory user = users[_addr];
return user.deposits;
}
function getIDOUSDT() public view returns(uint256) {
return USDTotal + usdt;
}
function decimals() private pure returns (uint8) {
return 18;
}
function getEndTime() public view returns (uint256) {
uint256 endTime = startTime + DAYS * DAY_IN_SECONDS;
return endTime - block.timestamp ;
}
function getMTDPrice() public view returns(uint256) {
return MTDPrice;
}
function getRemainingPlaces(uint8 _tarif) public view returns(uint256,uint256){
return (tarifs[_tarif].MaxPeople,tarifs[_tarif].MinimumInvestment);
}
function getUserInfo(address _addr) public view returns(
uint8 _ID,
bool _reflow,
uint256 _reflowUSDT,
uint256 _InvestmentUSDTotal,
uint256 _PromotionUSDTAmount,
uint256 _BuyMTDTotal
) {
return(
users[_addr].ID,
users[_addr].reflow,
users[_addr].reflowUSDT,
users[_addr].InvestmentUSDTotal,
users[_addr].PromotionUSDTAmount,
users[_addr].BuyMTDTotal
);
}
}Last updated