Contract Source Code:
File 1 of 1 : HolyToken
// SPDX-License-Identifier: MIT
pragma solidity 0.6.12;
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
}
/**
* @title SafeERC20
* @dev Wrappers around ERC20 operations that throw on failure (when the token
* contract returns false). Tokens that return no value (and instead revert or
* throw on failure) are also supported, non-reverting calls are assumed to be
* successful.
* To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
* which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
*/
library SafeERC20 {
using SafeMath for uint256;
using Address for address;
function safeTransfer(IERC20 token, address to, uint256 value) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
}
function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
}
/**
* @dev Deprecated. This function has issues similar to the ones found in
* {IERC20-approve}, and its usage is discouraged.
*
* Whenever possible, use {safeIncreaseAllowance} and
* {safeDecreaseAllowance} instead.
*/
function safeApprove(IERC20 token, address spender, uint256 value) internal {
// safeApprove should only be called when setting an initial allowance,
// or when resetting it to zero. To increase and decrease it, use
// 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
// solhint-disable-next-line max-line-length
require((value == 0) || (token.allowance(address(this), spender) == 0),
"SafeERC20: approve from non-zero to non-zero allowance"
);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
}
function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
uint256 newAllowance = token.allowance(address(this), spender).add(value);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal {
uint256 newAllowance = token.allowance(address(this), spender).sub(value, "SafeERC20: 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(IERC20 token, bytes memory data) private {
// We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
// we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that
// the target address contains contract code and also asserts for success in the low-level call.
bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
if (returndata.length > 0) { // Return data is optional
// solhint-disable-next-line max-line-length
require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 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) {
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 Collection of functions related to the address type
*/
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies in extcodesize, which returns 0 for contracts in
// construction, since the code is only stored at the end of the
// constructor execution.
uint256 size;
// solhint-disable-next-line no-inline-assembly
assembly { size := extcodesize(account) }
return size > 0;
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
// solhint-disable-next-line avoid-low-level-calls, 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);
}
}
}
}
/*
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with GSN meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
abstract contract Context {
function _msgSender() internal view virtual returns (address payable) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes memory) {
this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
return msg.data;
}
}
/**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* By default, the owner account will be the one that deploys the contract. This
* can later be changed with {transferOwnership}.
*
* This module is used through inheritance. It will make available the modifier
* `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 virtual onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
}
/**
* @dev A token holder contract that will allow a beneficiary to extract the
* tokens after a given release time.
*
* Useful for simple vesting schedules like "advisors get all of their tokens
* after 1 year".
*/
contract TokenTimelock {
using SafeERC20 for IERC20;
// ERC20 basic token contract being held
IERC20 private _token;
// beneficiary of tokens after they are released
address private _beneficiary;
// timestamp when token release is enabled
uint256 private _releaseTime;
constructor (IERC20 token, address beneficiary, uint256 releaseTime) public {
// solhint-disable-next-line not-rely-on-time
require(releaseTime > block.timestamp, "TokenTimelock: release time is before current time");
_token = token;
_beneficiary = beneficiary;
_releaseTime = releaseTime;
}
/**
* @return the token being held.
*/
function token() public view returns (IERC20) {
return _token;
}
/**
* @return the beneficiary of the tokens.
*/
function beneficiary() public view returns (address) {
return _beneficiary;
}
/**
* @return the time when the tokens are released.
*/
function releaseTime() public view returns (uint256) {
return _releaseTime;
}
/**
* @notice Transfers tokens held by timelock to beneficiary.
*/
function release() public virtual {
// solhint-disable-next-line not-rely-on-time
require(block.timestamp >= _releaseTime, "TokenTimelock: current time is before release time");
uint256 amount = _token.balanceOf(address(this));
require(amount > 0, "TokenTimelock: no tokens to release");
_token.safeTransfer(_beneficiary, amount);
}
}
/**
* @dev A token holder contract that will allow a beneficiary to extract the
* tokens by portions based on a metric (TVL)
*
* This is ported from openzeppelin-ethereum-package
*
* Currently the holder contract is Ownable (while the owner is current beneficiary)
* still, this allows to check the method calls in blockchain to verify fair play.
* In the future it will be possible to use automated calculation, e.g. using
* https://github.com/ConcourseOpen/DeFi-Pulse-Adapters TVL calculation, then
* ownership would be transferred to the managing contract.
*/
contract HolderTVLLock is Ownable {
using SafeMath for uint256;
using SafeERC20 for IERC20;
uint256 private constant RELEASE_PERCENT = 2;
uint256 private constant RELEASE_INTERVAL = 1 weeks;
// ERC20 basic token contract being held
IERC20 private _token;
// beneficiary of tokens after they are released
address private _beneficiary;
// timestamp when token release was made last time
uint256 private _lastReleaseTime;
// timestamp of first possible release time
uint256 private _firstReleaseTime;
// TVL metric for last release time
uint256 private _lastReleaseTVL;
// amount that already was released
uint256 private _released;
event TVLReleasePerformed(uint256 newTVL);
constructor (IERC20 token, address beneficiary, uint256 firstReleaseTime) public {
//as contract is deployed by Holyheld token, transfer ownership to dev
transferOwnership(beneficiary);
// solhint-disable-next-line not-rely-on-time
require(firstReleaseTime > block.timestamp, "release time before current time");
_token = token;
_beneficiary = beneficiary;
_firstReleaseTime = firstReleaseTime;
}
/**
* @return the token being held.
*/
function token() public view returns (IERC20) {
return _token;
}
/**
* @return the beneficiary of the tokens.
*/
function beneficiary() public view returns (address) {
return _beneficiary;
}
/**
* @return the time when the tokens were released last time.
*/
function lastReleaseTime() public view returns (uint256) {
return _lastReleaseTime;
}
/**
* @return the TVL marked when the tokens were released last time.
*/
function lastReleaseTVL() public view returns (uint256) {
return _lastReleaseTVL;
}
/**
* @notice Transfers tokens held by timelock to beneficiary.
* only owner can call this method as it will write new TVL metric value
* into the holder contract
*/
function release(uint256 _newTVL) public onlyOwner {
// solhint-disable-next-line not-rely-on-time
require(block.timestamp >= _firstReleaseTime, "current time before release time");
require(block.timestamp > _lastReleaseTime + RELEASE_INTERVAL, "release interval is not passed");
require(_newTVL > _lastReleaseTVL, "only release if TVL is higher");
// calculate amount that is possible to release
uint256 balance = _token.balanceOf(address(this));
uint256 totalBalance = balance.add(_released);
uint256 amount = totalBalance.mul(RELEASE_PERCENT).div(100);
require(balance > amount, "available balance depleted");
_token.safeTransfer(_beneficiary, amount);
_lastReleaseTime = block.timestamp;
_lastReleaseTVL = _newTVL;
_released = _released.add(amount);
emit TVLReleasePerformed(_newTVL);
}
}
/**
* @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 HolderVesting 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 SafeERC20 for IERC20;
uint256 private constant RELEASE_INTERVAL = 1 weeks;
event TokensReleased(address token, uint256 amount);
event TokenVestingRevoked(address token);
// beneficiary of tokens after they are released
address private _beneficiary;
// ERC20 basic token contract being held
IERC20 private _token;
// Durations and timestamps are expressed in UNIX time, the same units as block.timestamp.
uint256 private _start;
uint256 private _duration;
// timestamp when token release was made last time
uint256 private _lastReleaseTime;
bool private _revocable;
uint256 private _released;
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 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(IERC20 token, address beneficiary, uint256 start, uint256 duration, bool revocable) public {
require(beneficiary != address(0), "beneficiary is zero address");
require(duration > 0, "duration is 0");
// solhint-disable-next-line max-line-length
require(start.add(duration) > block.timestamp, "final time before current time");
_token = token;
_beneficiary = beneficiary;
//as contract is deployed by Holyheld token, transfer ownership to dev
transferOwnership(beneficiary);
_revocable = revocable;
_duration = duration;
_start = start;
}
/**
* @return the beneficiary of the tokens.
*/
function beneficiary() public view returns (address) {
return _beneficiary;
}
/**
* @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() public view returns (uint256) {
return _released;
}
/**
* @return true if the token is revoked.
*/
function revoked() public view returns (bool) {
return _revoked;
}
/**
* @return the time when the tokens were released last time.
*/
function lastReleaseTime() public view returns (uint256) {
return _lastReleaseTime;
}
/**
* @notice Transfers vested tokens to beneficiary.
*/
function release() public {
uint256 unreleased = _releasableAmount();
require(unreleased > 0, "no tokens are due");
require(block.timestamp > _lastReleaseTime + RELEASE_INTERVAL, "release interval is not passed");
_released = _released.add(unreleased);
_token.safeTransfer(_beneficiary, unreleased);
_lastReleaseTime = block.timestamp;
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.
*/
function revoke() public onlyOwner {
require(_revocable, "cannot revoke");
require(!_revoked, "vesting already revoked");
uint256 balance = _token.balanceOf(address(this));
uint256 unreleased = _releasableAmount();
uint256 refund = balance.sub(unreleased);
_revoked = true;
_token.safeTransfer(owner(), refund);
emit TokenVestingRevoked(address(_token));
}
/**
* @dev Calculates the amount that has already vested but hasn't been released yet.
*/
function _releasableAmount() private view returns (uint256) {
return _vestedAmount().sub(_released);
}
/**
* @dev Calculates the amount that has already vested.
*/
function _vestedAmount() private view returns (uint256) {
uint256 currentBalance = _token.balanceOf(address(this));
uint256 totalBalance = currentBalance.add(_released);
if (block.timestamp < _start) {
return 0;
} else if (block.timestamp >= _start.add(_duration) || _revoked) {
return totalBalance;
} else {
return totalBalance.mul(block.timestamp.sub(_start)).div(_duration);
}
}
}
// Interface to represent a contract in pools that requires additional
// deposit and withdraw of LP tokens. One of the examples at the time of writing
// is Yearn vault, which takes yCRV which is already LP token and returns yyCRV
interface Stakeable {
function deposit(uint) external;
function withdraw(uint) external;
}
/**
* @dev Implementation of the {IERC20} interface.
*
* This implementation is agnostic to the way tokens are created. This means
* that a supply mechanism has to be added in a derived contract using {_mint}.
* For a generic mechanism see {ERC20PresetMinterPauser}.
*
* TIP: For a detailed writeup see our guide
* https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
* to implement supply mechanisms].
*
* We have followed general OpenZeppelin guidelines: functions revert instead
* of returning `false` on failure. This behavior is nonetheless conventional
* and does not conflict with the expectations of ERC20 applications.
*
* Additionally, an {Approval} event is emitted on calls to {transferFrom}.
* This allows applications to reconstruct the allowance for all accounts just
* by listening to said events. Other implementations of the EIP may not emit
* these events, as it isn't required by the specification.
*
* Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
* functions have been added to mitigate the well-known issues around setting
* allowances. See {IERC20-approve}.
*/
contract ERC20 is Context, IERC20 {
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 (string memory name, string memory symbol) public {
_name = name;
_symbol = symbol;
_decimals = 18;
}
/**
* @dev Returns the name of the token.
*/
function name() public view returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view 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 {_setupDecimals} is
* called.
*
* 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 returns (uint8) {
return _decimals;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public view override returns (uint256) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(address account) public view override returns (uint256) {
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `recipient` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount) public virtual override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
/**
* @dev See {IERC20-transferFrom}.
*
* Emits an {Approval} event indicating the updated allowance. This is not
* required by the EIP. See the note at the beginning of {ERC20};
*
* Requirements:
* - `sender` and `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
* - the caller must have allowance for ``sender``'s tokens of at least
* `amount`.
*/
function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
_approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
return true;
}
/**
* @dev Atomically increases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
return true;
}
/**
* @dev Atomically decreases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `spender` must have allowance for the caller of at least
* `subtractedValue`.
*/
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
return true;
}
/**
* @dev Moves tokens `amount` from `sender` to `recipient`.
*
* This is internal function is equivalent to {transfer}, and can be used to
* e.g. implement automatic token fees, slashing mechanisms, etc.
*
* Emits a {Transfer} event.
*
* Requirements:
*
* - `sender` cannot be the zero address.
* - `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
*/
function _transfer(address sender, address recipient, uint256 amount) internal virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(sender, recipient, amount);
_balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance");
_balances[recipient] = _balances[recipient].add(amount);
emit Transfer(sender, recipient, amount);
}
/** @dev Creates `amount` tokens and assigns them to `account`, increasing
* the total supply.
*
* Emits a {Transfer} event with `from` set to the zero address.
*
* Requirements
*
* - `to` cannot be the zero address.
*/
function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(0), account, amount);
_totalSupply = _totalSupply.add(amount);
_balances[account] = _balances[account].add(amount);
emit Transfer(address(0), account, amount);
}
/**
* @dev Destroys `amount` tokens from `account`, reducing the
* total supply.
*
* Emits a {Transfer} event with `to` set to the zero address.
*
* Requirements
*
* - `account` cannot be the zero address.
* - `account` must have at least `amount` tokens.
*/
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
_beforeTokenTransfer(account, address(0), amount);
_balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance");
_totalSupply = _totalSupply.sub(amount);
emit Transfer(account, address(0), amount);
}
/**
* @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
*
* This internal function is equivalent to `approve`, and can be used to
* e.g. set automatic allowances for certain subsystems, etc.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `owner` cannot be the zero address.
* - `spender` cannot be the zero address.
*/
function _approve(address owner, address spender, uint256 amount) internal virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
/**
* @dev Sets {decimals} to a value other than the default one of 18.
*
* WARNING: This function should only be called from the constructor. Most
* applications that interact with token contracts will not expect
* {decimals} to ever change, and may work incorrectly if it does.
*/
function _setupDecimals(uint8 decimals_) internal {
_decimals = decimals_;
}
/**
* @dev Hook that is called before any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* will be to transferred to `to`.
* - when `from` is zero, `amount` tokens will be minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual { }
}
/**
* @dev // Holyheld token is a ERC20 token for Holyheld.
*
* total amount is fixed at 100M HOLY tokens.
* HOLY token does not have mint functions.
* It will allocate upon creation the initial transfers
* of tokens. It is not ownable or having any other
* means of distribution other than transfers in its constructor.
*/
// HolyToken. Ownable, fixed-amount (non-mintable) with governance to be added
contract HolyToken is ERC20("Holyheld", "HOLY") {
// main developers (founders) multi-sig wallet
// 1 mln tokens
address public founder;
// Treasury
// accumulates LP yield
address public treasury;
// weekly vested supply, reclaimable by 2% in a week by founder (WeeklyVested contract)
// 9 mln
address public timeVestedSupply;
// TVL-growth vested supply, reclaimable by 2% in a week if TVL is a new ATH (TVLVested contract)
// 10 mln
address public growthVestedSupply;
// main supply, locked for 4 months (TimeVested contract)
// 56 mln
address public mainSupply;
// Pool supply (ruled by HolyKnight contract)
// 24 mln
address public poolSupply;
uint public constant AMOUNT_INITLIQUIDITY = 1000000 * 1e18;
uint public constant AMOUNT_OPERATIONS = 9000000 * 1e18;
uint public constant AMOUNT_TEAM = 10000000 * 1e18;
uint public constant DISTRIBUTION_SUPPLY = 24000000 * 1e18;
uint public constant DISTRIBUTION_RESERVE_PERCENT = 20;
uint public constant MAIN_SUPPLY = 56000000 * 1e18;
uint public constant MAIN_SUPPLY_VESTING_PERIOD = 127 days;
uint public constant VESTING_START = 1602115200; //8 Oct 2020
uint public constant VESTING_START_GROWTH = 1604188800; //1 Nov 2020
// parameters for HolyKnight construction
uint public constant START_LP_BLOCK = 10950946;
// used for tokens per block calculation to distribute in about 4 months
uint public constant END_LP_BLOCK = 11669960;
// Constructor code is only run when the contract
// is created
constructor(address _founder, address _treasuryaddr) public {
founder = _founder; //address that deployed contract becomes initial founder
treasury = _treasuryaddr; //treasury address is created beforehand
// Timelock contract will hold main supply for 4 months till Jan 2021
mainSupply = address(new HolderTimelock(this, founder, block.timestamp + MAIN_SUPPLY_VESTING_PERIOD));
// TVL metric based vesting
growthVestedSupply = address(new HolderTVLLock(this, founder, VESTING_START_GROWTH));
// Standard continuous vesting contract
timeVestedSupply = address(new HolderVesting(this, founder, VESTING_START, 365 days, false));
// HOLY token distribution though liquidity mining
poolSupply = address(new HolyKnight(this, founder, treasury, DISTRIBUTION_SUPPLY, DISTRIBUTION_RESERVE_PERCENT, START_LP_BLOCK, END_LP_BLOCK));
//allocate tokens to addresses upon creation, no further minting possible
_mint(founder, AMOUNT_INITLIQUIDITY);
_mint(timeVestedSupply, AMOUNT_OPERATIONS);
_mint(growthVestedSupply, AMOUNT_TEAM);
_mint(poolSupply, DISTRIBUTION_SUPPLY);
_mint(mainSupply, MAIN_SUPPLY);
}
}
/**
* @dev // HolyKnight is using LP to distribute Holyheld token
*
* it does not mint any HOLY tokens, they must be present on the
* contract's token balance. Balance is not intended to be refillable.
*
* Note that it's ownable and the owner wields tremendous power. The ownership
* will be transferred to a governance smart contract once HOLY is sufficiently
* distributed and the community can show to govern itself.
*
* Have fun reading it. Hopefully it's bug-free. God bless.
*/
contract HolyKnight is Ownable {
using SafeMath for uint256;
using SafeERC20 for IERC20;
// Info of each user
struct UserInfo {
uint256 amount; // How many LP tokens the user has provided.
uint256 rewardDebt; // Reward debt. See explanation below.
//
// We do some fancy math here. Basically, any point in time, the amount of HOLYs
// entitled to a user but is pending to be distributed is:
//
// pending reward = (user.amount * pool.accHolyPerShare) - user.rewardDebt
//
// Whenever a user deposits or withdraws LP tokens to a pool. Here's what happens:
// 1. The pool's `accHolyPerShare` (and `lastRewardCalcBlock`) gets updated.
// 2. User receives the pending reward sent to his/her address.
// 3. User's `amount` gets updated.
// 4. User's `rewardDebt` gets updated.
// Thus every change in pool or allocation will result in recalculation of values
// (otherwise distribution remains constant btwn blocks and will be properly calculated)
uint256 stakedLPAmount;
}
// Info of each pool
struct PoolInfo {
IERC20 lpToken; // Address of LP token contract
uint256 allocPoint; // How many allocation points assigned to this pool. HOLYs to distribute per block
uint256 lastRewardCalcBlock; // Last block number for which HOLYs distribution is already calculated for the pool
uint256 accHolyPerShare; // Accumulated HOLYs per share, times 1e12. See below
bool stakeable; // we should call deposit method on the LP tokens provided (used for e.g. vault staking)
address stakeableContract; // location where to deposit LP tokens if pool is stakeable
IERC20 stakedHoldableToken;
}
// The Holyheld token
HolyToken public holytoken;
// Dev address
address public devaddr;
// Treasury address
address public treasuryaddr;
// The block number when HOLY mining starts
uint256 public startBlock;
// The block number when HOLY mining targeted to end (if full allocation).
// used only for token distribution calculation, this is not a hard limit
uint256 public targetEndBlock;
// Total amount of tokens to distribute
uint256 public totalSupply;
// Reserved percent of HOLY tokens for current distribution (e.g. when pool allocation is intentionally not full)
uint256 public reservedPercent;
// HOLY tokens created per block, calculatable through updateHolyPerBlock()
// updated once in the constructor and owner calling setReserve (if needed)
uint256 public holyPerBlock;
// Info of each pool
PoolInfo[] public poolInfo;
// Total allocation points. Must be the sum of all allocation points in all pools
uint256 public totalAllocPoint = 0;
// Info of each user that stakes LP tokens
mapping (uint256 => mapping (address => UserInfo)) public userInfo;
// Info of total amount of staked LP tokens by all users
mapping (address => uint256) public totalStaked;
event Deposit(address indexed user, uint256 indexed pid, uint256 amount);
event Withdraw(address indexed user, uint256 indexed pid, uint256 amount);
event EmergencyWithdraw(address indexed user, uint256 indexed pid, uint256 amount);
event Treasury(address indexed token, address treasury, uint256 amount);
constructor(
HolyToken _token,
address _devaddr,
address _treasuryaddr,
uint256 _totalsupply,
uint256 _reservedPercent,
uint256 _startBlock,
uint256 _targetEndBlock
) public {
holytoken = _token;
devaddr = _devaddr;
treasuryaddr = _treasuryaddr;
// as knight is deployed by Holyheld token, transfer ownership to dev
transferOwnership(_devaddr);
totalSupply = _totalsupply;
reservedPercent = _reservedPercent;
startBlock = _startBlock;
targetEndBlock = _targetEndBlock;
// calculate initial token number per block
updateHolyPerBlock();
}
// Reserve some percentage of HOLY token distribution
// (e.g. initially, 10% of tokens are reserved for future pools to be added)
function setReserve(uint256 _reservedPercent) public onlyOwner {
reservedPercent = _reservedPercent;
updateHolyPerBlock();
}
function updateHolyPerBlock() internal {
// safemath substraction cannot overflow
holyPerBlock = totalSupply.sub(totalSupply.mul(reservedPercent).div(100)).div(targetEndBlock.sub(startBlock));
massUpdatePools();
}
function poolLength() external view returns (uint256) {
return poolInfo.length;
}
// Add a new lp to the pool. Can only be called by the owner.
// XXX DO NOT add the same LP token more than once. Rewards will be messed up if you do.
function add(uint256 _allocPoint, IERC20 _lpToken, bool _stakeable, address _stakeableContract, IERC20 _stakedHoldableToken, bool _withUpdate) public onlyOwner {
if (_withUpdate) {
massUpdatePools();
}
uint256 lastRewardCalcBlock = block.number > startBlock ? block.number : startBlock;
totalAllocPoint = totalAllocPoint.add(_allocPoint);
poolInfo.push(PoolInfo({
lpToken: _lpToken,
allocPoint: _allocPoint,
lastRewardCalcBlock: lastRewardCalcBlock,
accHolyPerShare: 0,
stakeable: _stakeable,
stakeableContract: _stakeableContract,
stakedHoldableToken: IERC20(_stakedHoldableToken)
}));
if(_stakeable)
{
_lpToken.approve(_stakeableContract, 0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff);
}
}
// Update the given pool's HOLY allocation point. Can only be called by the owner.
function set(uint256 _pid, uint256 _allocPoint, bool _withUpdate) public onlyOwner {
if (_withUpdate) {
massUpdatePools();
}
totalAllocPoint = totalAllocPoint.sub(poolInfo[_pid].allocPoint).add(_allocPoint);
poolInfo[_pid].allocPoint = _allocPoint;
}
// View function to see pending HOLYs on frontend.
function pendingHoly(uint256 _pid, address _user) external view returns (uint256) {
PoolInfo storage pool = poolInfo[_pid];
UserInfo storage user = userInfo[_pid][_user];
uint256 accHolyPerShare = pool.accHolyPerShare;
uint256 lpSupply = totalStaked[address(pool.lpToken)];
if (block.number > pool.lastRewardCalcBlock && lpSupply != 0) {
uint256 multiplier = block.number.sub(pool.lastRewardCalcBlock);
uint256 tokenReward = multiplier.mul(holyPerBlock).mul(pool.allocPoint).div(totalAllocPoint);
accHolyPerShare = accHolyPerShare.add(tokenReward.mul(1e12).div(lpSupply));
}
return user.amount.mul(accHolyPerShare).div(1e12).sub(user.rewardDebt);
}
// Update reward vairables for all pools. Be careful of gas spending!
function massUpdatePools() public {
uint256 length = poolInfo.length;
for (uint256 pid = 0; pid < length; ++pid) {
updatePool(pid);
}
}
// Update reward variables of the given pool to be up-to-date when lpSupply changes
// For every deposit/withdraw/harvest pool recalculates accumulated token value
function updatePool(uint256 _pid) public {
PoolInfo storage pool = poolInfo[_pid];
if (block.number <= pool.lastRewardCalcBlock) {
return;
}
uint256 lpSupply = totalStaked[address(pool.lpToken)];
if (lpSupply == 0) {
pool.lastRewardCalcBlock = block.number;
return;
}
uint256 multiplier = block.number.sub(pool.lastRewardCalcBlock);
uint256 tokenRewardAccumulated = multiplier.mul(holyPerBlock).mul(pool.allocPoint).div(totalAllocPoint);
// no minting is required, the contract already has token balance pre-allocated
// accumulated HOLY per share is stored multiplied by 10^12 to allow small 'fractional' values
pool.accHolyPerShare = pool.accHolyPerShare.add(tokenRewardAccumulated.mul(1e12).div(lpSupply));
pool.lastRewardCalcBlock = block.number;
}
// Deposit LP tokens to HolyKnight for HOLY allocation.
function deposit(uint256 _pid, uint256 _amount) public {
PoolInfo storage pool = poolInfo[_pid];
UserInfo storage user = userInfo[_pid][msg.sender];
updatePool(_pid);
if (user.amount > 0) {
uint256 pending = user.amount.mul(pool.accHolyPerShare).div(1e12).sub(user.rewardDebt);
if(pending > 0) {
safeTokenTransfer(msg.sender, pending); //pay the earned tokens when user deposits
}
}
// this condition would save some gas on harvest calls
if (_amount > 0) {
pool.lpToken.safeTransferFrom(address(msg.sender), address(this), _amount);
user.amount = user.amount.add(_amount);
}
user.rewardDebt = user.amount.mul(pool.accHolyPerShare).div(1e12);
totalStaked[address(pool.lpToken)] = totalStaked[address(pool.lpToken)].add(_amount);
if (pool.stakeable) {
uint256 prevbalance = pool.stakedHoldableToken.balanceOf(address(this));
Stakeable(pool.stakeableContract).deposit(_amount);
uint256 balancetoadd = pool.stakedHoldableToken.balanceOf(address(this)).sub(prevbalance);
user.stakedLPAmount = user.stakedLPAmount.add(balancetoadd);
// protect received tokens from moving to treasury
totalStaked[address(pool.stakedHoldableToken)] = totalStaked[address(pool.stakedHoldableToken)].add(balancetoadd);
}
emit Deposit(msg.sender, _pid, _amount);
}
// Withdraw LP tokens from HolyKnight.
function withdraw(uint256 _pid, uint256 _amount) public {
PoolInfo storage pool = poolInfo[_pid];
UserInfo storage user = userInfo[_pid][msg.sender];
updatePool(_pid);
uint256 pending = user.amount.mul(pool.accHolyPerShare).div(1e12).sub(user.rewardDebt);
safeTokenTransfer(msg.sender, pending);
if (pool.stakeable) {
// reclaim back original LP tokens and withdraw all of them, regardless of amount
Stakeable(pool.stakeableContract).withdraw(user.stakedLPAmount);
totalStaked[address(pool.stakedHoldableToken)] = totalStaked[address(pool.stakedHoldableToken)].sub(user.stakedLPAmount);
user.stakedLPAmount = 0;
// even if returned amount is less (fees, etc.), return all that is available
// (can be impacting treasury rewards if abused, but is not viable due to gas costs
// and treasury yields can be claimed periodically)
uint256 balance = pool.lpToken.balanceOf(address(this));
if (user.amount < balance) {
pool.lpToken.safeTransfer(address(msg.sender), user.amount);
} else {
pool.lpToken.safeTransfer(address(msg.sender), balance);
}
totalStaked[address(pool.lpToken)] = totalStaked[address(pool.lpToken)].sub(user.amount);
user.amount = 0;
user.rewardDebt = 0;
} else {
require(user.amount >= _amount, "withdraw: not good");
pool.lpToken.safeTransfer(address(msg.sender), _amount);
totalStaked[address(pool.lpToken)] = totalStaked[address(pool.lpToken)].sub(_amount);
user.amount = user.amount.sub(_amount);
user.rewardDebt = user.amount.mul(pool.accHolyPerShare).div(1e12);
}
emit Withdraw(msg.sender, _pid, _amount);
}
// Withdraw LP tokens without caring about rewards. EMERGENCY ONLY.
function emergencyWithdraw(uint256 _pid) public {
PoolInfo storage pool = poolInfo[_pid];
UserInfo storage user = userInfo[_pid][msg.sender];
if (pool.stakeable) {
// reclaim back original LP tokens and withdraw all of them, regardless of amount
Stakeable(pool.stakeableContract).withdraw(user.stakedLPAmount);
totalStaked[address(pool.stakedHoldableToken)] = totalStaked[address(pool.stakedHoldableToken)].sub(user.stakedLPAmount);
user.stakedLPAmount = 0;
uint256 balance = pool.lpToken.balanceOf(address(this));
if (user.amount < balance) {
pool.lpToken.safeTransfer(address(msg.sender), user.amount);
} else {
pool.lpToken.safeTransfer(address(msg.sender), balance);
}
} else {
pool.lpToken.safeTransfer(address(msg.sender), user.amount);
}
totalStaked[address(pool.lpToken)] = totalStaked[address(pool.lpToken)].sub(user.amount);
user.amount = 0;
user.rewardDebt = 0;
emit EmergencyWithdraw(msg.sender, _pid, user.amount);
}
// Safe holyheld token transfer function, just in case if rounding error causes pool to not have enough HOLYs.
function safeTokenTransfer(address _to, uint256 _amount) internal {
uint256 balance = holytoken.balanceOf(address(this));
if (_amount > balance) {
holytoken.transfer(_to, balance);
} else {
holytoken.transfer(_to, _amount);
}
}
// Update dev address by the previous dev.
function dev(address _devaddr) public {
require(msg.sender == devaddr, "forbidden");
devaddr = _devaddr;
}
// Update treasury address by the previous treasury.
function treasury(address _treasuryaddr) public {
require(msg.sender == treasuryaddr, "forbidden");
treasuryaddr = _treasuryaddr;
}
// Send yield on an LP token to the treasury
// have just address (and not pid) as agrument to be able to recover
// tokens that could be directly transferred and not present in pools
function putToTreasury(address _token) public onlyOwner {
uint256 availablebalance = getAvailableBalance(_token);
require(availablebalance > 0, "not enough tokens");
putToTreasuryAmount(_token, availablebalance);
}
// Send yield amount realized from holding LP tokens to the treasury
function putToTreasuryAmount(address _token, uint256 _amount) public onlyOwner {
require(_token != address(holytoken), "cannot transfer holy tokens");
uint256 availablebalance = getAvailableBalance(_token);
require(_amount <= availablebalance, "not enough tokens");
IERC20(_token).safeTransfer(treasuryaddr, _amount);
emit Treasury(_token, treasuryaddr, _amount);
}
// Get available token balance that can be put to treasury
// For pools with internal staking, all lpToken balance is contract's
// (bacause user tokens are converted to pool.stakedHoldableToken when depositing)
// HOLY tokens themselves and user lpTokens are protected by this check
function getAvailableBalance(address _token) internal view returns (uint256) {
uint256 availablebalance = IERC20(_token).balanceOf(address(this)) - totalStaked[_token];
uint256 length = poolInfo.length;
for (uint256 pid = 0; pid < length; ++pid) {
PoolInfo storage pool = poolInfo[pid]; //storage pointer used read-only
if (pool.stakeable && address(pool.lpToken) == _token)
{
availablebalance = IERC20(_token).balanceOf(address(this));
break;
}
}
return availablebalance;
}
}
contract HolderTimelock is TokenTimelock {
constructor(
IERC20 _token,
address _beneficiary,
uint256 _releaseTime
)
public
TokenTimelock(_token, _beneficiary, _releaseTime)
//solhint-disable-next-line
{}
}