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ICO Smart Contract using BEP20
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// SPDX-License-Identifier: MIT | |
pragma solidity ^0.5.0; | |
/** | |
* @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) { | |
// According to EIP-1052, 0x0 is the value returned for not-yet created accounts | |
// and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned | |
// for accounts without code, i.e. `keccak256('')` | |
bytes32 codehash; | |
bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470; | |
// solhint-disable-next-line no-inline-assembly | |
assembly { | |
codehash := extcodehash(account) | |
} | |
return (codehash != accountHash && codehash != 0x0); | |
} | |
/** | |
* @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"); | |
// solhint-disable-next-line avoid-call-value | |
(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'); | |
return _functionCallWithValue(target, data, value, errorMessage); | |
} | |
function _functionCallWithValue( | |
address target, | |
bytes memory data, | |
uint256 weiValue, | |
string memory errorMessage | |
) private returns (bytes memory) { | |
require(isContract(target), 'Address: call to non-contract'); | |
// solhint-disable-next-line avoid-low-level-calls | |
(bool success, bytes memory returndata) = target.call.value(weiValue)(data); | |
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 | |
// solhint-disable-next-line no-inline-assembly | |
assembly { | |
let returndata_size := mload(returndata) | |
revert(add(32, returndata), returndata_size) | |
} | |
} else { | |
revert(errorMessage); | |
} | |
} | |
} | |
} | |
/** | |
* @title Roles | |
* @dev Library for managing addresses assigned to a Role. | |
*/ | |
library Roles { | |
struct Role { | |
mapping (address => bool) bearer; | |
} | |
/** | |
* @dev Give an account access to this role. | |
*/ | |
function add(Role storage role, address account) internal { | |
require(!has(role, account), "Roles: account already has role"); | |
role.bearer[account] = true; | |
} | |
/** | |
* @dev Remove an account's access to this role. | |
*/ | |
function remove(Role storage role, address account) internal { | |
require(has(role, account), "Roles: account does not have role"); | |
role.bearer[account] = false; | |
} | |
/** | |
* @dev Check if an account has this role. | |
* @return bool | |
*/ | |
function has(Role storage role, address account) internal view returns (bool) { | |
require(account != address(0), "Roles: account is the zero address"); | |
return role.bearer[account]; | |
} | |
} | |
interface IBEP20 { | |
/** | |
* @dev Returns the amount of tokens in existence. | |
*/ | |
function totalSupply() external view returns (uint256); | |
/** | |
* @dev Returns the token decimals. | |
*/ | |
function decimals() external view returns (uint8); | |
/** | |
* @dev Returns the token symbol. | |
*/ | |
function symbol() external view returns (string memory); | |
/** | |
* @dev Returns the token name. | |
*/ | |
function name() external view returns (string memory); | |
/** | |
* @dev Returns the bep token owner. | |
*/ | |
function getOwner() external view returns (address); | |
/** | |
* @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); | |
} | |
library SafeBEP20 { | |
using SafeMath for uint256; | |
using Address for address; | |
function safeTransfer( | |
IBEP20 token, | |
address to, | |
uint256 value | |
) internal { | |
_callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value)); | |
} | |
function safeTransferFrom( | |
IBEP20 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 | |
* {IBEP20-approve}, and its usage is discouraged. | |
* | |
* Whenever possible, use {safeIncreaseAllowance} and | |
* {safeDecreaseAllowance} instead. | |
*/ | |
function safeApprove( | |
IBEP20 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' | |
// solhint-disable-next-line max-line-length | |
require( | |
(value == 0) || (token.allowance(address(this), spender) == 0), | |
'SafeBEP20: approve from non-zero to non-zero allowance' | |
); | |
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value)); | |
} | |
function safeIncreaseAllowance( | |
IBEP20 token, | |
address spender, | |
uint256 value | |
) internal { | |
uint256 newAllowance = token.allowance(address(this), spender).add(value); | |
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); | |
} | |
function safeDecreaseAllowance( | |
IBEP20 token, | |
address spender, | |
uint256 value | |
) internal { | |
uint256 newAllowance = token.allowance(address(this), spender).sub( | |
value, | |
'SafeBEP20: decreased allowance below zero' | |
); | |
_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(IBEP20 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, 'SafeBEP20: low-level call failed'); | |
if (returndata.length > 0) { | |
// Return data is optional | |
// solhint-disable-next-line max-line-length | |
require(abi.decode(returndata, (bool)), 'SafeBEP20: BEP20 operation did not succeed'); | |
} | |
} | |
} | |
/** | |
* @dev Wrappers over Solidity's arithmetic operations with added overflow | |
* checks. | |
* | |
* Arithmetic operations in Solidity wrap on overflow. This can easily result | |
* in bugs, because programmers usually assume that an overflow raises an | |
* error, which is the standard behavior in high level programming languages. | |
* `SafeMath` restores this intuition by reverting the transaction when an | |
* operation overflows. | |
* | |
* Using this library instead of the unchecked operations eliminates an entire | |
* class of bugs, so it's recommended to use it always. | |
*/ | |
library SafeMath { | |
/** | |
* @dev Returns the addition of two unsigned integers, reverting on | |
* overflow. | |
* | |
* Counterpart to Solidity's `+` operator. | |
* | |
* Requirements: | |
* - Addition cannot overflow. | |
*/ | |
function add(uint256 a, uint256 b) internal pure returns (uint256) { | |
uint256 c = a + b; | |
require(c >= a, "SafeMath: addition overflow"); | |
return c; | |
} | |
/** | |
* @dev Returns the subtraction of two unsigned integers, reverting on | |
* overflow (when the result is negative). | |
* | |
* Counterpart to Solidity's `-` operator. | |
* | |
* Requirements: | |
* - Subtraction cannot overflow. | |
*/ | |
function sub(uint256 a, uint256 b) internal pure returns (uint256) { | |
return sub(a, b, "SafeMath: subtraction overflow"); | |
} | |
/** | |
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on | |
* overflow (when the result is negative). | |
* | |
* Counterpart to Solidity's `-` operator. | |
* | |
* Requirements: | |
* - Subtraction cannot overflow. | |
*/ | |
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { | |
require(b <= a, errorMessage); | |
uint256 c = a - b; | |
return c; | |
} | |
/** | |
* @dev Returns the multiplication of two unsigned integers, reverting on | |
* overflow. | |
* | |
* Counterpart to Solidity's `*` operator. | |
* | |
* Requirements: | |
* - Multiplication cannot overflow. | |
*/ | |
function mul(uint256 a, uint256 b) internal pure returns (uint256) { | |
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the | |
// benefit is lost if 'b' is also tested. | |
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 | |
if (a == 0) { | |
return 0; | |
} | |
uint256 c = a * b; | |
require(c / a == b, "SafeMath: multiplication overflow"); | |
return c; | |
} | |
/** | |
* @dev Returns the integer division of two unsigned integers. Reverts on | |
* division by zero. The result is rounded towards zero. | |
* | |
* Counterpart to Solidity's `/` operator. Note: this function uses a | |
* `revert` opcode (which leaves remaining gas untouched) while Solidity | |
* uses an invalid opcode to revert (consuming all remaining gas). | |
* | |
* Requirements: | |
* - The divisor cannot be zero. | |
*/ | |
function div(uint256 a, uint256 b) internal pure returns (uint256) { | |
return div(a, b, "SafeMath: division by zero"); | |
} | |
/** | |
* @dev Returns the integer division of two unsigned integers. Reverts with custom message on | |
* division by zero. The result is rounded towards zero. | |
* | |
* Counterpart to Solidity's `/` operator. Note: this function uses a | |
* `revert` opcode (which leaves remaining gas untouched) while Solidity | |
* uses an invalid opcode to revert (consuming all remaining gas). | |
* | |
* Requirements: | |
* - The divisor cannot be zero. | |
*/ | |
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { | |
// Solidity only automatically asserts when dividing by 0 | |
require(b > 0, errorMessage); | |
uint256 c = a / b; | |
// assert(a == b * c + a % b); // There is no case in which this doesn't hold | |
return c; | |
} | |
/** | |
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), | |
* Reverts when dividing by zero. | |
* | |
* Counterpart to Solidity's `%` operator. This function uses a `revert` | |
* opcode (which leaves remaining gas untouched) while Solidity uses an | |
* invalid opcode to revert (consuming all remaining gas). | |
* | |
* Requirements: | |
* - The divisor cannot be zero. | |
*/ | |
function mod(uint256 a, uint256 b) internal pure returns (uint256) { | |
return mod(a, b, "SafeMath: modulo by zero"); | |
} | |
/** | |
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), | |
* Reverts with custom message when dividing by zero. | |
* | |
* Counterpart to Solidity's `%` operator. This function uses a `revert` | |
* opcode (which leaves remaining gas untouched) while Solidity uses an | |
* invalid opcode to revert (consuming all remaining gas). | |
* | |
* Requirements: | |
* - The divisor cannot be zero. | |
*/ | |
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { | |
require(b != 0, errorMessage); | |
return a % b; | |
} | |
} | |
/* | |
* @dev Provides information about the current execution context, including the | |
* sender of the transaction and its data. While these are generally available | |
* via msg.sender and msg.data, they should not be accessed in such a direct | |
* manner, since when dealing with GSN meta-transactions the account sending and | |
* paying for execution may not be the actual sender (as far as an application | |
* is concerned). | |
* | |
* This contract is only required for intermediate, library-like contracts. | |
*/ | |
contract Context { | |
// Empty internal constructor, to prevent people from mistakenly deploying | |
// an instance of this contract, which should be used via inheritance. | |
constructor () internal { } | |
function _msgSender() internal view returns (address payable) { | |
return msg.sender; | |
} | |
function _msgData() internal view returns (bytes memory) { | |
this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 | |
return msg.data; | |
} | |
} | |
/** | |
* @dev A Secondary contract can only be used by its primary account (the one that created it). | |
*/ | |
contract Secondary is Context { | |
address private _primary; | |
/** | |
* @dev Emitted when the primary contract changes. | |
*/ | |
event PrimaryTransferred( | |
address recipient | |
); | |
/** | |
* @dev Sets the primary account to the one that is creating the Secondary contract. | |
*/ | |
constructor () internal { | |
address msgSender = _msgSender(); | |
_primary = msgSender; | |
emit PrimaryTransferred(msgSender); | |
} | |
/** | |
* @dev Reverts if called from any account other than the primary. | |
*/ | |
modifier onlyPrimary() { | |
require(_msgSender() == _primary, "Secondary: caller is not the primary account"); | |
_; | |
} | |
/** | |
* @return the address of the primary. | |
*/ | |
function primary() public view returns (address) { | |
return _primary; | |
} | |
/** | |
* @dev Transfers contract to a new primary. | |
* @param recipient The address of new primary. | |
*/ | |
function transferPrimary(address recipient) public onlyPrimary { | |
require(recipient != address(0), "Secondary: new primary is the zero address"); | |
_primary = recipient; | |
emit PrimaryTransferred(recipient); | |
} | |
} | |
/** | |
* @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]. | |
* | |
* _Since v2.5.0:_ this module is now much more gas efficient, given net gas | |
* metering changes introduced in the Istanbul hardfork. | |
*/ | |
contract ReentrancyGuard { | |
bool private _notEntered; | |
constructor () internal { | |
// Storing an initial 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 percetange 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. | |
_notEntered = true; | |
} | |
/** | |
* @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 make it call a | |
* `private` function that does the actual work. | |
*/ | |
modifier nonReentrant() { | |
// On the first call to nonReentrant, _notEntered will be true | |
require(_notEntered, "ReentrancyGuard: reentrant call"); | |
// Any calls to nonReentrant after this point will fail | |
_notEntered = false; | |
_; | |
// By storing the original value once again, a refund is triggered (see | |
// https://eips.ethereum.org/EIPS/eip-2200) | |
_notEntered = true; | |
} | |
} | |
/** | |
* @title __unstable__TokenVault | |
* @dev Similar to an Escrow for tokens, this contract allows its primary account to spend its tokens as it sees fit. | |
* This contract is an internal helper for PostDeliveryCrowdsale, and should not be used outside of this context. | |
*/ | |
// solhint-disable-next-line contract-name-camelcase | |
contract __unstable__TokenVault is Secondary { | |
function transfer(IBEP20 token, address to, uint256 amount) public onlyPrimary { | |
token.transfer(to, amount); | |
} | |
} | |
contract CapperRole is Context { | |
using Roles for Roles.Role; | |
event CapperAdded(address indexed account); | |
event CapperRemoved(address indexed account); | |
Roles.Role private _cappers; | |
constructor () internal { | |
_addCapper(_msgSender()); | |
} | |
modifier onlyCapper() { | |
require(isCapper(_msgSender()), "CapperRole: caller does not have the Capper role"); | |
_; | |
} | |
function isCapper(address account) public view returns (bool) { | |
return _cappers.has(account); | |
} | |
function addCapper(address account) public onlyCapper { | |
_addCapper(account); | |
} | |
function renounceCapper() public { | |
_removeCapper(_msgSender()); | |
} | |
function _addCapper(address account) internal { | |
_cappers.add(account); | |
emit CapperAdded(account); | |
} | |
function _removeCapper(address account) internal { | |
_cappers.remove(account); | |
emit CapperRemoved(account); | |
} | |
} | |
/** | |
* @title WhitelistAdminRole | |
* @dev WhitelistAdmins are responsible for assigning and removing Whitelisted accounts. | |
*/ | |
contract WhitelistAdminRole is Context { | |
using Roles for Roles.Role; | |
event WhitelistAdminAdded(address indexed account); | |
event WhitelistAdminRemoved(address indexed account); | |
Roles.Role private _whitelistAdmins; | |
constructor () internal { | |
_addWhitelistAdmin(_msgSender()); | |
} | |
modifier onlyWhitelistAdmin() { | |
require(isWhitelistAdmin(_msgSender()), "WhitelistAdminRole: caller does not have the WhitelistAdmin role"); | |
_; | |
} | |
function isWhitelistAdmin(address account) public view returns (bool) { | |
return _whitelistAdmins.has(account); | |
} | |
function addWhitelistAdmin(address account) public onlyWhitelistAdmin { | |
_addWhitelistAdmin(account); | |
} | |
function renounceWhitelistAdmin() public { | |
_removeWhitelistAdmin(_msgSender()); | |
} | |
function _addWhitelistAdmin(address account) internal { | |
_whitelistAdmins.add(account); | |
emit WhitelistAdminAdded(account); | |
} | |
function _removeWhitelistAdmin(address account) internal { | |
_whitelistAdmins.remove(account); | |
emit WhitelistAdminRemoved(account); | |
} | |
} | |
/** | |
* @title WhitelistedRole | |
* @dev Whitelisted accounts have been approved by a WhitelistAdmin to perform certain actions (e.g. participate in a | |
* crowdsale). This role is special in that the only accounts that can add it are WhitelistAdmins (who can also remove | |
* it), and not Whitelisteds themselves. | |
*/ | |
contract WhitelistedRole is Context, WhitelistAdminRole { | |
using Roles for Roles.Role; | |
event WhitelistedAdded(address indexed account); | |
event WhitelistedRemoved(address indexed account); | |
Roles.Role private _whitelisteds; | |
modifier onlyWhitelisted() { | |
require(isWhitelisted(_msgSender()), "WhitelistedRole: caller does not have the Whitelisted role"); | |
_; | |
} | |
function isWhitelisted(address account) public view returns (bool) { | |
return _whitelisteds.has(account); | |
} | |
function addWhitelisted(address account) public onlyWhitelistAdmin { | |
_addWhitelisted(account); | |
} | |
function removeWhitelisted(address account) public onlyWhitelistAdmin { | |
_removeWhitelisted(account); | |
} | |
function renounceWhitelisted() public { | |
_removeWhitelisted(_msgSender()); | |
} | |
function _addWhitelisted(address account) internal { | |
_whitelisteds.add(account); | |
emit WhitelistedAdded(account); | |
} | |
function _removeWhitelisted(address account) internal { | |
_whitelisteds.remove(account); | |
emit WhitelistedRemoved(account); | |
} | |
} | |
contract PauserRole is Context { | |
using Roles for Roles.Role; | |
event PauserAdded(address indexed account); | |
event PauserRemoved(address indexed account); | |
Roles.Role private _pausers; | |
constructor () internal { | |
_addPauser(_msgSender()); | |
} | |
modifier onlyPauser() { | |
require(isPauser(_msgSender()), "PauserRole: caller does not have the Pauser role"); | |
_; | |
} | |
function isPauser(address account) public view returns (bool) { | |
return _pausers.has(account); | |
} | |
function addPauser(address account) public onlyPauser { | |
_addPauser(account); | |
} | |
function renouncePauser() public { | |
_removePauser(_msgSender()); | |
} | |
function _addPauser(address account) internal { | |
_pausers.add(account); | |
emit PauserAdded(account); | |
} | |
function _removePauser(address account) internal { | |
_pausers.remove(account); | |
emit PauserRemoved(account); | |
} | |
} | |
/** | |
* @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. | |
*/ | |
contract Pausable is Context, PauserRole { | |
/** | |
* @dev Emitted when the pause is triggered by a pauser (`account`). | |
*/ | |
event Paused(address account); | |
/** | |
* @dev Emitted when the pause is lifted by a pauser (`account`). | |
*/ | |
event Unpaused(address account); | |
bool private _paused; | |
/** | |
* @dev Initializes the contract in unpaused state. Assigns the Pauser role | |
* to the deployer. | |
*/ | |
constructor () internal { | |
_paused = false; | |
} | |
/** | |
* @dev Returns true if the contract is paused, and false otherwise. | |
*/ | |
function paused() public view returns (bool) { | |
return _paused; | |
} | |
/** | |
* @dev Modifier to make a function callable only when the contract is not paused. | |
*/ | |
modifier whenNotPaused() { | |
require(!_paused, "Pausable: paused"); | |
_; | |
} | |
/** | |
* @dev Modifier to make a function callable only when the contract is paused. | |
*/ | |
modifier whenPaused() { | |
require(_paused, "Pausable: not paused"); | |
_; | |
} | |
/** | |
* @dev Called by a pauser to pause, triggers stopped state. | |
*/ | |
function pause() public onlyPauser whenNotPaused { | |
_paused = true; | |
emit Paused(_msgSender()); | |
} | |
/** | |
* @dev Called by a pauser to unpause, returns to normal state. | |
*/ | |
function unpause() public onlyPauser whenPaused { | |
_paused = false; | |
emit Unpaused(_msgSender()); | |
} | |
} | |
/** | |
* @title Crowdsale | |
* @dev Crowdsale is a base contract for managing a token crowdsale, | |
* allowing investors to purchase tokens with ether. This contract implements | |
* such functionality in its most fundamental form and can be extended to provide additional | |
* functionality and/or custom behavior. | |
* The external interface represents the basic interface for purchasing tokens, and conforms | |
* the base architecture for crowdsales. It is *not* intended to be modified / overridden. | |
* The internal interface conforms the extensible and modifiable surface of crowdsales. Override | |
* the methods to add functionality. Consider using 'super' where appropriate to concatenate | |
* behavior. | |
*/ | |
contract Crowdsale is Context, ReentrancyGuard { | |
using SafeMath for uint256; | |
using SafeBEP20 for IBEP20; | |
// The token being sold | |
IBEP20 private _token; | |
// Address where funds are collected | |
address payable private _wallet; | |
// How many token units a buyer gets per wei. | |
// The rate is the conversion between wei and the smallest and indivisible token unit. | |
// So, if you are using a rate of 1 with a ERC20Detailed token with 3 decimals called TOK | |
// 1 wei will give you 1 unit, or 0.001 TOK. | |
uint256 private _rate; | |
// Amount of wei raised | |
uint256 private _weiRaised; | |
/** | |
* Event for token purchase logging | |
* @param purchaser who paid for the tokens | |
* @param beneficiary who got the tokens | |
* @param value weis paid for purchase | |
* @param amount amount of tokens purchased | |
*/ | |
event TokensPurchased(address indexed purchaser, address indexed beneficiary, uint256 value, uint256 amount); | |
/** | |
* @param rate Number of token units a buyer gets per wei | |
* @dev The rate is the conversion between wei and the smallest and indivisible | |
* token unit. So, if you are using a rate of 1 with a ERC20Detailed token | |
* with 3 decimals called TOK, 1 wei will give you 1 unit, or 0.001 TOK. | |
* @param wallet Address where collected funds will be forwarded to | |
* @param token Address of the token being sold | |
*/ | |
constructor (uint256 rate, address payable wallet, IBEP20 token) public { | |
require(rate > 0, "Crowdsale: rate is 0"); | |
require(wallet != address(0), "Crowdsale: wallet is the zero address"); | |
require(address(token) != address(0), "Crowdsale: token is the zero address"); | |
_rate = rate; | |
_wallet = wallet; | |
_token = token; | |
} | |
/** | |
* @dev fallback function ***DO NOT OVERRIDE*** | |
* Note that other contracts will transfer funds with a base gas stipend | |
* of 2300, which is not enough to call buyTokens. Consider calling | |
* buyTokens directly when purchasing tokens from a contract. | |
*/ | |
function () external payable { | |
buyTokens(_msgSender()); | |
} | |
/** | |
* @return the token being sold. | |
*/ | |
function token() public view returns (IBEP20) { | |
return _token; | |
} | |
/** | |
* @return the address where funds are collected. | |
*/ | |
function wallet() public view returns (address payable) { | |
return _wallet; | |
} | |
/** | |
* @return the number of token units a buyer gets per wei. | |
*/ | |
function rate() public view returns (uint256) { | |
return _rate; | |
} | |
/** | |
* @return the amount of wei raised. | |
*/ | |
function weiRaised() public view returns (uint256) { | |
return _weiRaised; | |
} | |
/** | |
* @dev low level token purchase ***DO NOT OVERRIDE*** | |
* This function has a non-reentrancy guard, so it shouldn't be called by | |
* another `nonReentrant` function. | |
* @param beneficiary Recipient of the token purchase | |
*/ | |
function buyTokens(address beneficiary) public nonReentrant payable { | |
uint256 weiAmount = msg.value; | |
_preValidatePurchase(beneficiary, weiAmount); | |
// calculate token amount to be created | |
uint256 tokens = _getTokenAmount(weiAmount); | |
// update state | |
_weiRaised = _weiRaised.add(weiAmount); | |
_processPurchase(beneficiary, tokens); | |
emit TokensPurchased(_msgSender(), beneficiary, weiAmount, tokens); | |
_updatePurchasingState(beneficiary, weiAmount); | |
_forwardFunds(); | |
_postValidatePurchase(beneficiary, weiAmount); | |
} | |
function updateWeiRaised(uint256 amount) internal { | |
// update state | |
_weiRaised = _weiRaised.add(amount); | |
} | |
/** | |
* @dev Validation of an incoming purchase. Use require statements to revert state when conditions are not met. | |
* Use `super` in contracts that inherit from Crowdsale to extend their validations. | |
* Example from CappedCrowdsale.sol's _preValidatePurchase method: | |
* super._preValidatePurchase(beneficiary, weiAmount); | |
* require(weiRaised().add(weiAmount) <= cap); | |
* @param beneficiary Address performing the token purchase | |
* @param weiAmount Value in wei involved in the purchase | |
*/ | |
function _preValidatePurchase(address beneficiary, uint256 weiAmount) internal view { | |
require(beneficiary != address(0), "Crowdsale: beneficiary is the zero address"); | |
require(weiAmount != 0, "Crowdsale: weiAmount is 0"); | |
this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 | |
} | |
/** | |
* @dev Validation of an executed purchase. Observe state and use revert statements to undo rollback when valid | |
* conditions are not met. | |
* @param beneficiary Address performing the token purchase | |
* @param weiAmount Value in wei involved in the purchase | |
*/ | |
function _postValidatePurchase(address beneficiary, uint256 weiAmount) internal view { | |
// solhint-disable-previous-line no-empty-blocks | |
} | |
/** | |
* @dev Source of tokens. Override this method to modify the way in which the crowdsale ultimately gets and sends | |
* its tokens. | |
* @param beneficiary Address performing the token purchase | |
* @param tokenAmount Number of tokens to be emitted | |
*/ | |
function _deliverTokens(address beneficiary, uint256 tokenAmount) internal { | |
_token.safeTransfer(beneficiary, tokenAmount); | |
} | |
/** | |
* @dev Executed when a purchase has been validated and is ready to be executed. Doesn't necessarily emit/send | |
* tokens. | |
* @param beneficiary Address receiving the tokens | |
* @param tokenAmount Number of tokens to be purchased | |
*/ | |
function _processPurchase(address beneficiary, uint256 tokenAmount) internal { | |
_deliverTokens(beneficiary, tokenAmount); | |
} | |
/** | |
* @dev Override for extensions that require an internal state to check for validity (current user contributions, | |
* etc.) | |
* @param beneficiary Address receiving the tokens | |
* @param weiAmount Value in wei involved in the purchase | |
*/ | |
function _updatePurchasingState(address beneficiary, uint256 weiAmount) internal { | |
// solhint-disable-previous-line no-empty-blocks | |
} | |
/** | |
* @dev Override to extend the way in which ether is converted to tokens. | |
* @param weiAmount Value in wei to be converted into tokens | |
* @return Number of tokens that can be purchased with the specified _weiAmount | |
*/ | |
function _getTokenAmount(uint256 weiAmount) internal view returns (uint256) { | |
return weiAmount.mul(_rate); | |
} | |
/** | |
* @dev Determines how ETH is stored/forwarded on purchases. | |
*/ | |
function _forwardFunds() internal { | |
_wallet.transfer(msg.value); | |
} | |
} | |
/** | |
* @title TimedCrowdsale | |
* @dev Crowdsale accepting contributions only within a time frame. | |
*/ | |
contract TimedCrowdsale is Crowdsale { | |
using SafeMath for uint256; | |
uint256 private _openingTime; | |
uint256 private _closingTime; | |
/** | |
* Event for crowdsale extending | |
* @param newClosingTime new closing time | |
* @param prevClosingTime old closing time | |
*/ | |
event TimedCrowdsaleExtended(uint256 prevClosingTime, uint256 newClosingTime); | |
/** | |
* @dev Reverts if not in crowdsale time range. | |
*/ | |
modifier onlyWhileOpen { | |
require(isOpen(), "TimedCrowdsale: not open"); | |
_; | |
} | |
/** | |
* @dev Constructor, takes crowdsale opening and closing times. | |
* @param openingTime Crowdsale opening time | |
* @param closingTime Crowdsale closing time | |
*/ | |
constructor (uint256 openingTime, uint256 closingTime) public { | |
// solhint-disable-next-line not-rely-on-time | |
require(openingTime >= block.timestamp, "TimedCrowdsale: opening time is before current time"); | |
// solhint-disable-next-line max-line-length | |
require(closingTime > openingTime, "TimedCrowdsale: opening time is not before closing time"); | |
_openingTime = openingTime; | |
_closingTime = closingTime; | |
} | |
/** | |
* @return the crowdsale opening time. | |
*/ | |
function openingTime() public view returns (uint256) { | |
return _openingTime; | |
} | |
/** | |
* @return the crowdsale closing time. | |
*/ | |
function closingTime() public view returns (uint256) { | |
return _closingTime; | |
} | |
/** | |
* @return true if the crowdsale is open, false otherwise. | |
*/ | |
function isOpen() public view returns (bool) { | |
// solhint-disable-next-line not-rely-on-time | |
return block.timestamp >= _openingTime && block.timestamp <= _closingTime; | |
} | |
/** | |
* @dev Checks whether the period in which the crowdsale is open has already elapsed. | |
* @return Whether crowdsale period has elapsed | |
*/ | |
function hasClosed() public view returns (bool) { | |
// solhint-disable-next-line not-rely-on-time | |
return block.timestamp > _closingTime; | |
} | |
/** | |
* @dev Extend parent behavior requiring to be within contributing period. | |
* @param beneficiary Token purchaser | |
* @param weiAmount Amount of wei contributed | |
*/ | |
function _preValidatePurchase(address beneficiary, uint256 weiAmount) internal onlyWhileOpen view { | |
super._preValidatePurchase(beneficiary, weiAmount); | |
} | |
/** | |
* @dev Extend crowdsale. | |
* @param newClosingTime Crowdsale closing time | |
*/ | |
function _extendTime(uint256 newClosingTime) internal onlyWhileOpen { | |
require(!hasClosed(), "TimedCrowdsale: already closed"); | |
// solhint-disable-next-line max-line-length | |
require(newClosingTime > _closingTime, "TimedCrowdsale: new closing time is before current closing time"); | |
emit TimedCrowdsaleExtended(_closingTime, newClosingTime); | |
_closingTime = newClosingTime; | |
} | |
function _forceClosed() internal onlyWhileOpen { | |
require(!hasClosed(), "TimedCrowdsale: already closed"); | |
uint256 newClosingTime = now + 1 minutes; | |
emit TimedCrowdsaleExtended(_closingTime, newClosingTime); | |
_closingTime = newClosingTime; | |
} | |
} | |
/** | |
* @title PostDeliveryCrowdsale | |
* @dev Crowdsale that locks tokens from withdrawal until it ends. | |
*/ | |
contract PostDeliveryCrowdsale is TimedCrowdsale { | |
using SafeMath for uint256; | |
mapping(address => uint256) private _balances; | |
__unstable__TokenVault private _vault; | |
constructor() public { | |
_vault = new __unstable__TokenVault(); | |
} | |
/** | |
* @dev Withdraw tokens only after crowdsale ends. | |
* @param beneficiary Whose tokens will be withdrawn. | |
*/ | |
function withdrawTokens(address beneficiary) public { | |
require(hasClosed(), "PostDeliveryCrowdsale: not closed"); | |
uint256 amount = _balances[beneficiary]; | |
require(amount > 0, "PostDeliveryCrowdsale: beneficiary is not due any tokens"); | |
_balances[beneficiary] = 0; | |
_vault.transfer(token(), beneficiary, amount); | |
} | |
/** | |
* @return the balance of an account. | |
*/ | |
function balanceOf(address account) public view returns (uint256) { | |
return _balances[account]; | |
} | |
/** | |
* @dev Overrides parent by storing due balances, and delivering tokens to the vault instead of the end user. This | |
* ensures that the tokens will be available by the time they are withdrawn (which may not be the case if | |
* `_deliverTokens` was called later). | |
* @param beneficiary Token purchaser | |
* @param tokenAmount Amount of tokens purchased | |
*/ | |
function _processPurchase(address beneficiary, uint256 tokenAmount) internal { | |
_balances[beneficiary] = _balances[beneficiary].add(tokenAmount); | |
_deliverTokens(address(_vault), tokenAmount); | |
} | |
} | |
/** | |
* @title FinalizableCrowdsale | |
* @dev Extension of TimedCrowdsale with a one-off finalization action, where one | |
* can do extra work after finishing. | |
*/ | |
contract FinalizableCrowdsale is TimedCrowdsale { | |
using SafeMath for uint256; | |
bool private _finalized; | |
event CrowdsaleFinalized(); | |
constructor () internal { | |
_finalized = false; | |
} | |
/** | |
* @return true if the crowdsale is finalized, false otherwise. | |
*/ | |
function finalized() public view returns (bool) { | |
return _finalized; | |
} | |
/** | |
* @dev Must be called after crowdsale ends, to do some extra finalization | |
* work. Calls the contract's finalization function. | |
*/ | |
function finalize() public { | |
require(!_finalized, "FinalizableCrowdsale: already finalized"); | |
require(hasClosed(), "FinalizableCrowdsale: not closed"); | |
_finalized = true; | |
_finalization(); | |
emit CrowdsaleFinalized(); | |
} | |
/** | |
* @dev Can be overridden to add finalization logic. The overriding function | |
* should call super._finalization() to ensure the chain of finalization is | |
* executed entirely. | |
*/ | |
function _finalization() internal { | |
// solhint-disable-previous-line no-empty-blocks | |
} | |
} | |
/** | |
* @title PausableCrowdsale | |
* @dev Extension of Crowdsale contract where purchases can be paused and unpaused by the pauser role. | |
*/ | |
contract PausableCrowdsale is Crowdsale, Pausable { | |
/** | |
* @dev Validation of an incoming purchase. Use require statements to revert state when conditions are not met. | |
* Use super to concatenate validations. | |
* Adds the validation that the crowdsale must not be paused. | |
* @param _beneficiary Address performing the token purchase | |
* @param _weiAmount Value in wei involved in the purchase | |
*/ | |
function _preValidatePurchase(address _beneficiary, uint256 _weiAmount) internal view whenNotPaused { | |
return super._preValidatePurchase(_beneficiary, _weiAmount); | |
} | |
} | |
/** | |
* @title WhitelistCrowdsale | |
* @dev Crowdsale in which only whitelisted users can contribute. | |
*/ | |
contract WhitelistCrowdsale is WhitelistedRole, Crowdsale { | |
/** | |
* @dev Extend parent behavior requiring beneficiary to be whitelisted. Note that no | |
* restriction is imposed on the account sending the transaction. | |
* @param _beneficiary Token beneficiary | |
* @param _weiAmount Amount of wei contributed | |
*/ | |
function _preValidatePurchase(address _beneficiary, uint256 _weiAmount) internal view { | |
require(isWhitelisted(_beneficiary), "WhitelistCrowdsale: beneficiary doesn't have the Whitelisted role"); | |
super._preValidatePurchase(_beneficiary, _weiAmount); | |
} | |
} | |
/** | |
* @title IndividuallyCappedCrowdsale | |
* @dev Crowdsale with per-beneficiary caps. | |
*/ | |
contract IndividuallyCappedCrowdsale is Crowdsale, CapperRole { | |
using SafeMath for uint256; | |
mapping(address => uint256) private _contributions; | |
mapping(address => uint256) private _caps; | |
/** | |
* @dev Sets a specific beneficiary's maximum contribution. | |
* @param beneficiary Address to be capped | |
* @param cap Wei limit for individual contribution | |
*/ | |
function setCap(address beneficiary, uint256 cap) external onlyCapper { | |
_caps[beneficiary] = cap; | |
} | |
/** | |
* @dev Returns the cap of a specific beneficiary. | |
* @param beneficiary Address whose cap is to be checked | |
* @return Current cap for individual beneficiary | |
*/ | |
function getCap(address beneficiary) public view returns (uint256) { | |
return _caps[beneficiary]; | |
} | |
/** | |
* @dev Returns the amount contributed so far by a specific beneficiary. | |
* @param beneficiary Address of contributor | |
* @return Beneficiary contribution so far | |
*/ | |
function getContribution(address beneficiary) public view returns (uint256) { | |
return _contributions[beneficiary]; | |
} | |
/** | |
* @dev Extend parent behavior requiring purchase to respect the beneficiary's funding cap. | |
* @param beneficiary Token purchaser | |
* @param weiAmount Amount of wei contributed | |
*/ | |
function _preValidatePurchase(address beneficiary, uint256 weiAmount) internal view { | |
super._preValidatePurchase(beneficiary, weiAmount); | |
// solhint-disable-next-line max-line-length | |
require(_contributions[beneficiary].add(weiAmount) <= _caps[beneficiary], "IndividuallyCappedCrowdsale: beneficiary's cap exceeded"); | |
} | |
/** | |
* @dev Extend parent behavior to update beneficiary contributions. | |
* @param beneficiary Token purchaser | |
* @param weiAmount Amount of wei contributed | |
*/ | |
function _updatePurchasingState(address beneficiary, uint256 weiAmount) internal { | |
super._updatePurchasingState(beneficiary, weiAmount); | |
_contributions[beneficiary] = _contributions[beneficiary].add(weiAmount); | |
} | |
} | |
/** | |
* @title CappedCrowdsale | |
* @dev Crowdsale with a limit for total contributions. | |
*/ | |
contract CappedCrowdsale is Crowdsale { | |
using SafeMath for uint256; | |
uint256 private _cap; | |
/** | |
* @dev Constructor, takes maximum amount of wei accepted in the crowdsale. | |
* @param cap Max amount of wei to be contributed | |
*/ | |
constructor (uint256 cap) public { | |
require(cap > 0, "CappedCrowdsale: cap is 0"); | |
_cap = cap; | |
} | |
/** | |
* @return the cap of the crowdsale. | |
*/ | |
function cap() public view returns (uint256) { | |
return _cap; | |
} | |
/** | |
* @dev Checks whether the cap has been reached. | |
* @return Whether the cap was reached | |
*/ | |
function capReached() public view returns (bool) { | |
return weiRaised() >= _cap; | |
} | |
/** | |
* @dev Extend parent behavior requiring purchase to respect the funding cap. | |
* @param beneficiary Token purchaser | |
* @param weiAmount Amount of wei contributed | |
*/ | |
function _preValidatePurchase(address beneficiary, uint256 weiAmount) internal view { | |
super._preValidatePurchase(beneficiary, weiAmount); | |
require(weiRaised().add(weiAmount) <= _cap, "CappedCrowdsale: cap exceeded"); | |
} | |
} | |
/** | |
* @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. | |
*/ | |
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 () internal { | |
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 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 onlyOwner { | |
_transferOwnership(newOwner); | |
} | |
/** | |
* @dev Transfers ownership of the contract to a new account (`newOwner`). | |
*/ | |
function _transferOwnership(address newOwner) internal { | |
require(newOwner != address(0), "Ownable: new owner is the zero address"); | |
emit OwnershipTransferred(_owner, newOwner); | |
_owner = newOwner; | |
} | |
} | |
contract BEP20Token is Context, IBEP20, Ownable | |
{ | |
using SafeMath for uint256; | |
using Address for address; | |
mapping(address => uint256) private _balances; | |
mapping(address => mapping(address => uint256)) private _allowances; | |
uint256 private _totalSupply; | |
string private _name; | |
string private _symbol; | |
uint8 private _decimals; | |
/** | |
* @dev Sets the values for {name} and {symbol}, initializes {decimals} with | |
* a default value of 18. | |
* | |
* To select a different value for {decimals}, use {_setupDecimals}. | |
* | |
* All three of these values are immutable: they can only be set once during | |
* construction. | |
*/ | |
constructor() public { | |
_name = "Test Bep Token"; | |
_symbol = "TBEP"; | |
_decimals = 18; | |
_totalSupply = 1000000000 * 10 ** uint256(_decimals); | |
_balances[msg.sender] = _totalSupply; | |
emit Transfer(address(0), msg.sender, _totalSupply); | |
} | |
/** | |
* @dev Returns the bep token owner. | |
*/ | |
function getOwner() external view returns (address) { | |
return owner(); | |
} | |
/** | |
* @dev Returns the token name. | |
*/ | |
function name() public view returns (string memory) { | |
return _name; | |
} | |
/** | |
* @dev Returns the token decimals. | |
*/ | |
function decimals() public view returns (uint8) { | |
return _decimals; | |
} | |
/** | |
* @dev Returns the token symbol. | |
*/ | |
function symbol() public view returns (string memory) { | |
return _symbol; | |
} | |
/** | |
* @dev See {BEP20-totalSupply}. | |
*/ | |
function totalSupply() public view returns (uint256) { | |
return _totalSupply; | |
} | |
/** | |
* @dev See {BEP20-balanceOf}. | |
*/ | |
function balanceOf(address account) public view returns (uint256) { | |
return _balances[account]; | |
} | |
/** | |
* @dev See {BEP20-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 returns (bool) { | |
_transfer(_msgSender(), recipient, amount); | |
return true; | |
} | |
/** | |
* @dev See {BEP20-allowance}. | |
*/ | |
function allowance(address owner, address spender) public view returns (uint256) { | |
return _allowances[owner][spender]; | |
} | |
/** | |
* @dev See {BEP20-approve}. | |
* | |
* Requirements: | |
* | |
* - `spender` cannot be the zero address. | |
*/ | |
function approve(address spender, uint256 amount) public returns (bool) { | |
_approve(_msgSender(), spender, amount); | |
return true; | |
} | |
/** | |
* @dev See {BEP20-transferFrom}. | |
* | |
* Emits an {Approval} event indicating the updated allowance. This is not | |
* required by the EIP. See the note at the beginning of {BEP20}; | |
* | |
* 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 returns (bool) { | |
_transfer(sender, recipient, amount); | |
_approve( | |
sender, | |
_msgSender(), | |
_allowances[sender][_msgSender()].sub(amount, 'BEP20: 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 {BEP20-approve}. | |
* | |
* Emits an {Approval} event indicating the updated allowance. | |
* | |
* Requirements: | |
* | |
* - `spender` cannot be the zero address. | |
*/ | |
function increaseAllowance(address spender, uint256 addedValue) public 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 {BEP20-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 returns (bool) { | |
_approve( | |
_msgSender(), | |
spender, | |
_allowances[_msgSender()][spender].sub(subtractedValue, 'BEP20: decreased allowance below zero') | |
); | |
return true; | |
} | |
/** | |
* @dev Creates `amount` tokens and assigns them to `msg.sender`, increasing | |
* the total supply. | |
* | |
* Requirements | |
* | |
* - `msg.sender` must be the token owner | |
*/ | |
function mint(uint256 amount) public onlyOwner returns (bool) { | |
_mint(_msgSender(), amount); | |
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 { | |
require(sender != address(0), 'BEP20: transfer from the zero address'); | |
require(recipient != address(0), 'BEP20: transfer to the zero address'); | |
_balances[sender] = _balances[sender].sub(amount, 'BEP20: 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 | |
* | |
* - `to` cannot be the zero address. | |
*/ | |
function _mint(address account, uint256 amount) internal { | |
require(account != address(0), 'BEP20: mint to the zero address'); | |
_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 { | |
require(account != address(0), 'BEP20: burn from the zero address'); | |
_balances[account] = _balances[account].sub(amount, 'BEP20: 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 is 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 { | |
require(owner != address(0), 'BEP20: approve from the zero address'); | |
require(spender != address(0), 'BEP20: approve to the zero address'); | |
_allowances[owner][spender] = amount; | |
emit Approval(owner, spender, amount); | |
} | |
/** | |
* @dev Destroys `amount` tokens from `account`.`amount` is then deducted | |
* from the caller's allowance. | |
* | |
* See {_burn} and {_approve}. | |
*/ | |
function _burnFrom(address account, uint256 amount) internal { | |
_burn(account, amount); | |
_approve( | |
account, | |
_msgSender(), | |
_allowances[account][_msgSender()].sub(amount, 'BEP20: burn amount exceeds allowance') | |
); | |
} | |
} | |
/** | |
* @title TokenVesting | |
* @dev A token holder contract that can release its token balance gradually like a | |
* typical vesting scheme, with a cliff and vesting period. Optionally revocable by the | |
* owner. | |
*/ | |
contract TokenVesting is Ownable { | |
// The vesting schedule is time-based (i.e. using block timestamps as opposed to e.g. block numbers), and is | |
// therefore sensitive to timestamp manipulation (which is something miners can do, to a certain degree). Therefore, | |
// it is recommended to avoid using short time durations (less than a minute). Typical vesting schemes, with a | |
// cliff period of a year and a duration of four years, are safe to use. | |
// solhint-disable not-rely-on-time | |
using SafeMath for uint256; | |
using SafeBEP20 for IBEP20; | |
event TokensReleased(address token, uint256 amount); | |
event TokenVestingRevoked(address token); | |
// beneficiary of tokens after they are released | |
address private _beneficiary; | |
// Durations and timestamps are expressed in UNIX time, the same units as block.timestamp. | |
uint256 private _cliff; | |
uint256 private _start; | |
uint256 private _duration; | |
bool private _revocable; | |
mapping (address => uint256) private _released; | |
mapping (address => bool) private _revoked; | |
/** | |
* @dev Creates a vesting contract that vests its balance of any ERC20 token to the | |
* beneficiary, gradually in a linear fashion until start + duration. By then all | |
* of the balance will have vested. | |
* @param beneficiary address of the beneficiary to whom vested tokens are transferred | |
* @param cliffDuration duration in seconds of the cliff in which tokens will begin to vest | |
* @param start the time (as Unix time) at which point vesting starts | |
* @param duration duration in seconds of the period in which the tokens will vest | |
* @param revocable whether the vesting is revocable or not | |
*/ | |
constructor (address beneficiary, uint256 start, uint256 cliffDuration, uint256 duration, bool revocable) public { | |
require(beneficiary != address(0), "TokenVesting: beneficiary is the zero address"); | |
// solhint-disable-next-line max-line-length | |
require(cliffDuration <= duration, "TokenVesting: cliff is longer than duration"); | |
require(duration > 0, "TokenVesting: duration is 0"); | |
// solhint-disable-next-line max-line-length | |
require(start.add(duration) > block.timestamp, "TokenVesting: final time is before current time"); | |
_beneficiary = beneficiary; | |
_revocable = revocable; | |
_duration = duration; | |
_cliff = start.add(cliffDuration); | |
_start = start; | |
} | |
/** | |
* @return the beneficiary of the tokens. | |
*/ | |
function beneficiary() public view returns (address) { | |
return _beneficiary; | |
} | |
/** | |
* @return the cliff time of the token vesting. | |
*/ | |
function cliff() public view returns (uint256) { | |
return _cliff; | |
} | |
/** | |
* @return the start time of the token vesting. | |
*/ | |
function start() public view returns (uint256) { | |
return _start; | |
} | |
/** | |
* @return the duration of the token vesting. | |
*/ | |
function duration() public view returns (uint256) { | |
return _duration; | |
} | |
/** | |
* @return true if the vesting is revocable. | |
*/ | |
function revocable() public view returns (bool) { | |
return _revocable; | |
} | |
/** | |
* @return the amount of the token released. | |
*/ | |
function released(address token) public view returns (uint256) { | |
return _released[token]; | |
} | |
/** | |
* @return true if the token is revoked. | |
*/ | |
function revoked(address token) public view returns (bool) { | |
return _revoked[token]; | |
} | |
/** | |
* @notice Transfers vested tokens to beneficiary. | |
* @param token ERC20 token which is being vested | |
*/ | |
function release(IBEP20 token) public { | |
uint256 unreleased = _releasableAmount(token); | |
require(unreleased > 0, "TokenVesting: no tokens are due"); | |
_released[address(token)] = _released[address(token)].add(unreleased); | |
token.safeTransfer(_beneficiary, unreleased); | |
emit TokensReleased(address(token), unreleased); | |
} | |
/** | |
* @notice Allows the owner to revoke the vesting. Tokens already vested | |
* remain in the contract, the rest are returned to the owner. | |
* @param token ERC20 token which is being vested | |
*/ | |
function revoke(IBEP20 token) public onlyOwner { | |
require(_revocable, "TokenVesting: cannot revoke"); | |
require(!_revoked[address(token)], "TokenVesting: token already revoked"); | |
uint256 balance = token.balanceOf(address(this)); | |
uint256 unreleased = _releasableAmount(token); | |
uint256 refund = balance.sub(unreleased); | |
_revoked[address(token)] = true; | |
token.safeTransfer(owner(), refund); | |
emit TokenVestingRevoked(address(token)); | |
} | |
/** | |
* @notice Allows the owner to adjust the vesting duration. | |
* @param newEndTime how long for the vesting period to last | |
*/ | |
function extendVestDuration(uint256 newEndTime) public onlyOwner { | |
require(newEndTime > 0, "TokenVesting: duration is 0"); | |
require(_start.add(newEndTime) > block.timestamp, "TokenVesting: final time is before current time"); | |
_duration = newEndTime; | |
} | |
/** | |
* @notice Allows the owner to adjust the cliff duration. | |
* @param newStartTime how long for the cliff period to last | |
*/ | |
function extendCliffDuration(uint256 newStartTime) public onlyOwner { | |
uint256 cliffDuration = _cliff - _start; | |
_cliff = newStartTime.add(cliffDuration); | |
_start = newStartTime; | |
} | |
/** | |
* @dev Calculates the amount that has already vested but hasn't been released yet. | |
* @param token ERC20 token which is being vested | |
*/ | |
function _releasableAmount(IBEP20 token) public view returns (uint256) { | |
return _vestedAmount(token).sub(_released[address(token)]); | |
} | |
/** | |
* @dev Calculates the amount that has already vested. | |
* @param token ERC20 token which is being vested | |
*/ | |
function _vestedAmount(IBEP20 token) private view returns (uint256) { | |
uint256 currentBalance = token.balanceOf(address(this)); | |
uint256 totalBalance = currentBalance.add(_released[address(token)]); | |
if (block.timestamp < _cliff) { | |
return 0; | |
} else if (block.timestamp >= _start.add(_duration) || _revoked[address(token)]) { | |
return totalBalance; | |
} | |
else | |
{ | |
return totalBalance.mul(block.timestamp.sub(_start)).div(_duration); | |
} | |
} | |
function getTotalAmount(IBEP20 token) public view returns (uint256) { | |
uint256 currentBalance = token.balanceOf(address(this)); | |
uint256 totalBalance = currentBalance.add(_released[address(token)]); | |
return totalBalance; | |
} | |
function getLeftoverAmount(IBEP20 token) public view returns (uint256) { | |
return token.balanceOf(address(this)); | |
} | |
} | |
contract TSTokenPrivateSale is | |
Crowdsale, | |
CappedCrowdsale, | |
CapperRole, | |
PausableCrowdsale, | |
WhitelistCrowdsale, | |
TimedCrowdsale | |
{ | |
using SafeMath for uint; | |
struct User | |
{ | |
address inviter; | |
address self; | |
} | |
mapping(address => uint256) private _contributions; | |
mapping(address => uint256) private _caps; | |
mapping(address => uint256) private _balances; | |
mapping(address => uint256) private _commisions; | |
mapping(address => TokenVesting) private _vault; | |
mapping(address => __unstable__TokenVault) private _firstVault; | |
mapping(address => User) public tree; | |
mapping(address => bool) private _firstWithdraw; | |
IBEP20 _token; | |
uint256 private _individualDefaultCap; | |
uint256 _openingTime; | |
uint256 _closingTime; | |
uint256 _totalCap; | |
address payable _wallet; | |
uint256 _rate; | |
uint256 private _cliffDuration; | |
uint256 private _vestDuration; | |
uint256 private _lockedAfterFirstWithdraw; | |
constructor( | |
IBEP20 tokenAddress, uint256 totalSaleCap, uint256 individualPurchaseCap, uint256 openingTime, uint256 closingTime, | |
address payable walletAddress, uint256 rate, uint256 cliffDuration, uint256 vestDuration, uint256 startCliffAfterFirstWithdrawTime) | |
public | |
WhitelistCrowdsale() | |
PausableCrowdsale() | |
CappedCrowdsale(totalSaleCap) | |
TimedCrowdsale(openingTime, closingTime) | |
Crowdsale(rate, walletAddress, tokenAddress) | |
{ | |
tree[msg.sender] = User(msg.sender, msg.sender); | |
_token = IBEP20(tokenAddress); | |
_totalCap = totalSaleCap; | |
_individualDefaultCap = individualPurchaseCap; | |
_openingTime = openingTime; | |
_closingTime = closingTime; | |
_wallet = walletAddress; | |
_rate = rate; | |
_cliffDuration = cliffDuration; | |
_vestDuration = vestDuration; | |
_lockedAfterFirstWithdraw = startCliffAfterFirstWithdrawTime; | |
} | |
/** | |
* @dev Change beneficiary Cliff time. | |
* @param newTime new time for the cliff | |
* @param beneficiary that is affected | |
*/ | |
function changeCliffWalletWithdrawTime(uint256 newTime, address beneficiary) public { | |
_vault[beneficiary].extendCliffDuration(newTime); | |
} | |
/** | |
* @dev Change beneficiary total vest time. | |
* @param newTime new time for the cliff | |
* @param beneficiary that is affected | |
*/ | |
function changeCliffWalletEndTime(uint256 newTime, address beneficiary) public { | |
_vault[beneficiary].extendVestDuration(newTime); | |
} | |
/** | |
* @dev Sets a specific beneficiary's maximum contribution. | |
* @param beneficiary Address to be capped | |
* @param cap Wei limit for individual contribution | |
*/ | |
function setCap(address beneficiary, uint256 cap) external onlyCapper { | |
_caps[beneficiary] = cap; | |
} | |
/** | |
* @dev Returns the cap of a specific beneficiary. | |
* @param beneficiary Address whose cap is to be checked | |
* @return Current cap for individual beneficiary | |
*/ | |
function getCap(address beneficiary) public view returns (uint256) { | |
uint256 cap = _caps[beneficiary]; | |
if (cap == 0) { | |
cap = _individualDefaultCap; | |
} | |
return cap; | |
} | |
/** | |
* @dev Returns the amount contributed so far by a specific beneficiary. | |
* @param beneficiary Address of contributor | |
* @return Beneficiary contribution so far | |
*/ | |
function getContribution(address beneficiary) public view returns (uint256) { | |
return _contributions[beneficiary]; | |
} | |
/** | |
* @dev Extend parent behavior requiring purchase to respect the beneficiary's funding cap. | |
* @param beneficiary Token purchaser | |
* @param weiAmount Amount of wei contributed | |
*/ | |
function _preValidatePurchase(address beneficiary, uint256 weiAmount) internal view { | |
require(isWhitelisted(beneficiary), "WhitelistCrowdsale: beneficiary doesn't have the Whitelisted role"); | |
super._preValidatePurchase(beneficiary, weiAmount); | |
// solhint-disable-next-line max-line-length | |
require(_contributions[beneficiary].add(weiAmount) <= getCap(beneficiary), "Contract: beneficiary's cap exceeded"); | |
} | |
/** | |
* @dev Extend parent behavior to update beneficiary contributions. | |
* @param beneficiary Token purchaser | |
* @param weiAmount Amount of wei contributed | |
*/ | |
function _updatePurchasingState(address beneficiary, uint256 weiAmount) internal { | |
super._updatePurchasingState(beneficiary, weiAmount); | |
_contributions[beneficiary] = _contributions[beneficiary].add(weiAmount); | |
} | |
/** | |
* @dev Extends crowdsale end timing. | |
* @param closingTime new closing time | |
*/ | |
function extendTime(uint256 closingTime) public onlyWhitelistAdmin { | |
super._extendTime(closingTime); | |
} | |
/** | |
* @dev Force close of crowdsale. | |
*/ | |
function closeCrowdSale() public onlyWhitelistAdmin { | |
super._forceClosed(); | |
} | |
/** | |
* @dev get referral of said address. | |
*/ | |
function getInviter() public view returns (address) { | |
return tree[msg.sender].inviter; | |
} | |
/** | |
* @dev Extended version of adding Whitelisted | |
* @param accounts the addresses you wish to whitelist | |
*/ | |
function addWhitelistedList(address[] memory accounts) public onlyWhitelistAdmin | |
{ | |
for (uint256 account = 0; account < accounts.length; account++) | |
{ | |
addWhitelisted(accounts[account]); | |
} | |
} | |
/** | |
* @dev Reward 10 percent of purchased amount to the referree if there was | |
* @param tokenAmount amount purchased | |
* @param beneficiary purchaser wallet address | |
*/ | |
function _processCommision(uint256 tokenAmount, address beneficiary) internal { | |
if (tree[beneficiary].inviter != address(0)) | |
{ | |
if (tree[beneficiary].inviter != beneficiary) //Do not reward commision to self | |
{ | |
if (address(_vault[tree[beneficiary].inviter]) == address(0)) | |
{ | |
_vault[tree[beneficiary].inviter] = new TokenVesting(tree[beneficiary].inviter, _closingTime + _lockedAfterFirstWithdraw, _cliffDuration, _vestDuration, false); | |
} | |
uint256 commisionReward = (tokenAmount / 10000) * (10 * 100); //Get 10% of tokenAmount | |
_balances[tree[beneficiary].inviter] = _balances[tree[beneficiary].inviter].add(commisionReward); | |
_commisions[tree[beneficiary].inviter] = _commisions[tree[beneficiary].inviter].add(commisionReward); | |
_deliverTokens(address(_vault[tree[beneficiary].inviter]), commisionReward); | |
} | |
} | |
} | |
/** | |
* @dev Withdraw tokens only after crowdsale ends. | |
* @param beneficiary Whose tokens will be withdrawn. | |
*/ | |
function withdrawTokens(address beneficiary) public { | |
require(hasClosed(), "PostDeliveryCrowdsale: not closed"); | |
uint256 amount = _balances[beneficiary]; | |
require(amount > 0, "PostDeliveryCrowdsale: beneficiary is not due any tokens"); | |
if (_firstWithdraw[beneficiary] == false) | |
{ | |
if (amount != _commisions[beneficiary]) //if beneficiary only earned from commisions and did not purchase token, ignore withdrawing from 10% wallet | |
{ | |
uint256 firstWithdrawAmount = (((amount - _commisions[beneficiary]) / 10000) * (10 * 100)); | |
//Withdraw from 10% wallet | |
_balances[beneficiary] -= firstWithdrawAmount; | |
_firstVault[beneficiary].transfer(token(), beneficiary, firstWithdrawAmount); | |
_firstWithdraw[beneficiary] = true; | |
} | |
} | |
_balances[beneficiary] -= _vault[beneficiary]._releasableAmount(token()); | |
_vault[beneficiary].release(token()); | |
} | |
/** | |
* @dev check how much commisions was earned | |
* @param beneficiary the address in question | |
*/ | |
function checkCommisions(address beneficiary) public view returns (uint256) { | |
return _commisions[beneficiary]; | |
} | |
/** | |
* @dev check total balance in cliff vault | |
* @param beneficiary the address in question | |
*/ | |
function checkTotalBalanceInCliff(address beneficiary) public view returns (uint256) { | |
return _vault[beneficiary].getTotalAmount(token()); | |
} | |
/** | |
* @dev check how much can be withdrawn | |
* @param beneficiary the address in question | |
*/ | |
function checkWithdrawAmount(address beneficiary) public view returns (uint256) { | |
return _vault[beneficiary]._releasableAmount(token()); | |
} | |
/** | |
* @dev check how much left in cliff vault | |
* @param beneficiary the address in question | |
*/ | |
function checkLeftAmount(address beneficiary) public view returns (uint256) { | |
return _vault[beneficiary].getLeftoverAmount(token()); | |
} | |
/** | |
* @dev check cliff time of said address | |
* @param beneficiary the address in question | |
*/ | |
function checkCliffTime(address beneficiary) public view returns (uint256) { | |
return _vault[beneficiary].cliff(); | |
} | |
/** | |
* @dev check what time was vault starting time | |
* @param beneficiary the address in question | |
*/ | |
function checkStartTime(address beneficiary) public view returns (uint256) { | |
return _vault[beneficiary].start(); | |
} | |
/** | |
* @return the balance of an account. | |
*/ | |
function balanceOf(address account) public view returns (uint256) { | |
return _balances[account]; | |
} | |
/** | |
* @dev Overrides parent by storing due balances, and delivering tokens to the vault instead of the end user. This | |
* ensures that the tokens will be available by the time they are withdrawn (which may not be the case if | |
* `_deliverTokens` was called later). | |
* @param beneficiary Token purchaser | |
* @param tokenAmount Amount of tokens purchased | |
*/ | |
function _processPurchase(address beneficiary, uint256 tokenAmount) internal { | |
if (address(_vault[beneficiary]) == address(0)) | |
{ | |
_vault[beneficiary] = new TokenVesting(beneficiary, _closingTime + _lockedAfterFirstWithdraw, _cliffDuration, _vestDuration, false); | |
} | |
if (address(_firstVault[beneficiary]) == address(0)) | |
{ | |
_firstVault[beneficiary] = new __unstable__TokenVault(); | |
} | |
_firstWithdraw[beneficiary] = false; | |
_balances[beneficiary] = _balances[beneficiary].add(tokenAmount); | |
_deliverTokens(address(_vault[beneficiary]), tokenAmount - ((tokenAmount / 10000) * (10 * 100))); //Deliver 90% to cliff wallet | |
_deliverTokens(address(_firstVault[beneficiary]), ((tokenAmount / 10000) * (10 * 100))); //Deliver 10% to first withdraw wallet | |
_processCommision(tokenAmount, beneficiary); | |
} | |
/** | |
* @dev extended function of purchase token, with amount purchased and reffral address | |
* @param beneficiary the address in question | |
* @param boughtAmount amount purchased without the extra counting of token decimals | |
* @param referee refferal address | |
*/ | |
function buyTokensWithValueAndReferee(address beneficiary, uint boughtAmount, address referee) public nonReentrant payable { | |
require(tree[beneficiary].inviter == address(0), "Sender can't already exist in tree"); | |
require(referee != beneficiary, "Referee cannot be yourself"); | |
uint256 amount = boughtAmount * 10 ** uint256(_token.decimals()); | |
uint256 weiAmount = amount; | |
_preValidatePurchase(beneficiary, weiAmount); | |
// calculate token amount to be created | |
uint256 tokens = _getTokenAmount(weiAmount); | |
// update state | |
updateWeiRaised(weiAmount); | |
tree[beneficiary] = User(referee, beneficiary); | |
_processPurchase(beneficiary, tokens); | |
emit TokensPurchased(_msgSender(), beneficiary, weiAmount, tokens); | |
_updatePurchasingState(beneficiary, weiAmount); | |
_forwardFunds(); | |
_postValidatePurchase(beneficiary, weiAmount); | |
} | |
/** | |
* @dev extended function of purchase token, with amount purchased | |
* @param beneficiary the address in question | |
* @param boughtAmount amount purchased without the extra counting of token decimals | |
*/ | |
function buyTokensWithValue(address beneficiary, uint boughtAmount) public nonReentrant payable { | |
uint256 amount = boughtAmount * 10 ** uint256(_token.decimals()); | |
uint256 weiAmount = amount; | |
_preValidatePurchase(beneficiary, weiAmount); | |
// calculate token amount to be created | |
uint256 tokens = _getTokenAmount(weiAmount); | |
// update state | |
updateWeiRaised(weiAmount); | |
_processPurchase(beneficiary, tokens); | |
emit TokensPurchased(_msgSender(), beneficiary, weiAmount, tokens); | |
_updatePurchasingState(beneficiary, weiAmount); | |
_forwardFunds(); | |
_postValidatePurchase(beneficiary, weiAmount); | |
} | |
} | |
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