Contract Name:
ConstantReturnStaking
Contract Source Code:
File 1 of 1 : ConstantReturnStaking
/**
*Submitted for verification at BscScan.com on 2023-03-14
*/
// SPDX-License-Identifier: BSD-3-Clause
pragma solidity 0.6.11;
/**
* @title SafeMath
* @dev Math operations with safety checks that throw on error
*/
library SafeMath {
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a * b;
assert(a == 0 || c / a == b);
return c;
}
function div(uint256 a, uint256 b) internal pure returns (uint256) {
// assert(b > 0); // Solidity automatically throws when dividing by 0
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
assert(b <= a);
return a - b;
}
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
assert(c >= a);
return c;
}
}
/**
* @dev Collection of functions related to the address type
*/
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies on extcodesize, which returns 0 for contracts in
// construction, since the code is only stored at the end of the
// constructor execution.
uint256 size;
// 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");
require(isContract(target), "Address: call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.call{ value: value }(data);
return _verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data, string memory errorMessage) internal view returns (bytes memory) {
require(isContract(target), "Address: static call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.staticcall(data);
return _verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.3._
*/
function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
return functionDelegateCall(target, data, "Address: low-level delegate call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.3._
*/
function functionDelegateCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
require(isContract(target), "Address: delegate call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.delegatecall(data);
return _verifyCallResult(success, returndata, errorMessage);
}
function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) {
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
// solhint-disable-next-line no-inline-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
/**
* @dev Library for managing
* https://en.wikipedia.org/wiki/Set_(abstract_data_type)[sets] of primitive
* types.
*
* Sets have the following properties:
*
* - Elements are added, removed, and checked for existence in constant time
* (O(1)).
* - Elements are enumerated in O(n). No guarantees are made on the ordering.
*
* ```
* contract Example {
* // Add the library methods
* using EnumerableSet for EnumerableSet.AddressSet;
*
* // Declare a set state variable
* EnumerableSet.AddressSet private mySet;
* }
* ```
*
* As of v3.0.0, only sets of type `address` (`AddressSet`) and `uint256`
* (`UintSet`) are supported.
*/
library EnumerableSet {
// To implement this library for multiple types with as little code
// repetition as possible, we write it in terms of a generic Set type with
// bytes32 values.
// The Set implementation uses private functions, and user-facing
// implementations (such as AddressSet) are just wrappers around the
// underlying Set.
// This means that we can only create new EnumerableSets for types that fit
// in bytes32.
struct Set {
// Storage of set values
bytes32[] _values;
// Position of the value in the `values` array, plus 1 because index 0
// means a value is not in the set.
mapping (bytes32 => uint256) _indexes;
}
/**
* @dev Add a value to a set. O(1).
*
* Returns true if the value was added to the set, that is if it was not
* already present.
*/
function _add(Set storage set, bytes32 value) private returns (bool) {
if (!_contains(set, value)) {
set._values.push(value);
// The value is stored at length-1, but we add 1 to all indexes
// and use 0 as a sentinel value
set._indexes[value] = set._values.length;
return true;
} else {
return false;
}
}
/**
* @dev Removes a value from a set. O(1).
*
* Returns true if the value was removed from the set, that is if it was
* present.
*/
function _remove(Set storage set, bytes32 value) private returns (bool) {
// We read and store the value's index to prevent multiple reads from the same storage slot
uint256 valueIndex = set._indexes[value];
if (valueIndex != 0) { // Equivalent to contains(set, value)
// To delete an element from the _values array in O(1), we swap the element to delete with the last one in
// the array, and then remove the last element (sometimes called as 'swap and pop').
// This modifies the order of the array, as noted in {at}.
uint256 toDeleteIndex = valueIndex - 1;
uint256 lastIndex = set._values.length - 1;
// When the value to delete is the last one, the swap operation is unnecessary. However, since this occurs
// so rarely, we still do the swap anyway to avoid the gas cost of adding an 'if' statement.
bytes32 lastvalue = set._values[lastIndex];
// Move the last value to the index where the value to delete is
set._values[toDeleteIndex] = lastvalue;
// Update the index for the moved value
set._indexes[lastvalue] = toDeleteIndex + 1; // All indexes are 1-based
// Delete the slot where the moved value was stored
set._values.pop();
// Delete the index for the deleted slot
delete set._indexes[value];
return true;
} else {
return false;
}
}
/**
* @dev Returns true if the value is in the set. O(1).
*/
function _contains(Set storage set, bytes32 value) private view returns (bool) {
return set._indexes[value] != 0;
}
/**
* @dev Returns the number of values on the set. O(1).
*/
function _length(Set storage set) private view returns (uint256) {
return set._values.length;
}
/**
* @dev Returns the value stored at position `index` in the set. O(1).
*
* Note that there are no guarantees on the ordering of values inside the
* array, and it may change when more values are added or removed.
*
* Requirements:
*
* - `index` must be strictly less than {length}.
*/
function _at(Set storage set, uint256 index) private view returns (bytes32) {
require(set._values.length > index, "EnumerableSet: index out of bounds");
return set._values[index];
}
// AddressSet
struct AddressSet {
Set _inner;
}
/**
* @dev Add a value to a set. O(1).
*
* Returns true if the value was added to the set, that is if it was not
* already present.
*/
function add(AddressSet storage set, address value) internal returns (bool) {
return _add(set._inner, bytes32(uint256(value)));
}
/**
* @dev Removes a value from a set. O(1).
*
* Returns true if the value was removed from the set, that is if it was
* present.
*/
function remove(AddressSet storage set, address value) internal returns (bool) {
return _remove(set._inner, bytes32(uint256(value)));
}
/**
* @dev Returns true if the value is in the set. O(1).
*/
function contains(AddressSet storage set, address value) internal view returns (bool) {
return _contains(set._inner, bytes32(uint256(value)));
}
/**
* @dev Returns the number of values in the set. O(1).
*/
function length(AddressSet storage set) internal view returns (uint256) {
return _length(set._inner);
}
/**
* @dev Returns the value stored at position `index` in the set. O(1).
*
* Note that there are no guarantees on the ordering of values inside the
* array, and it may change when more values are added or removed.
*
* Requirements:
*
* - `index` must be strictly less than {length}.
*/
function at(AddressSet storage set, uint256 index) internal view returns (address) {
return address(uint256(_at(set._inner, index)));
}
// UintSet
struct UintSet {
Set _inner;
}
/**
* @dev Add a value to a set. O(1).
*
* Returns true if the value was added to the set, that is if it was not
* already present.
*/
function add(UintSet storage set, uint256 value) internal returns (bool) {
return _add(set._inner, bytes32(value));
}
/**
* @dev Removes a value from a set. O(1).
*
* Returns true if the value was removed from the set, that is if it was
* present.
*/
function remove(UintSet storage set, uint256 value) internal returns (bool) {
return _remove(set._inner, bytes32(value));
}
/**
* @dev Returns true if the value is in the set. O(1).
*/
function contains(UintSet storage set, uint256 value) internal view returns (bool) {
return _contains(set._inner, bytes32(value));
}
/**
* @dev Returns the number of values on the set. O(1).
*/
function length(UintSet storage set) internal view returns (uint256) {
return _length(set._inner);
}
/**
* @dev Returns the value stored at position `index` in the set. O(1).
*
* Note that there are no guarantees on the ordering of values inside the
* array, and it may change when more values are added or removed.
*
* Requirements:
*
* - `index` must be strictly less than {length}.
*/
function at(UintSet storage set, uint256 index) internal view returns (uint256) {
return uint256(_at(set._inner, index));
}
}
/**
* @title Ownable
* @dev The Ownable contract has an owner address, and provides basic authorization control
* functions, this simplifies the implementation of "user permissions".
*/
contract Ownable {
address public owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev The Ownable constructor sets the original `owner` of the contract to the sender
* account.
*/
constructor() public {
owner = msg.sender;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(msg.sender == owner);
_;
}
/**
* @dev Allows the current owner to transfer control of the contract to a newOwner.
* @param newOwner The address to transfer ownership to.
*/
function transferOwnership(address newOwner) onlyOwner public {
require(newOwner != address(0));
emit OwnershipTransferred(owner, newOwner);
owner = newOwner;
}
}
interface Token {
function transferFrom(address, address, uint) external returns (bool);
function transfer(address, uint) external returns (bool);
}
interface LegacyToken {
function transfer(address, uint) external;
}
contract ConstantReturnStaking is Ownable {
using Address for address;
using SafeMath for uint;
using EnumerableSet for EnumerableSet.AddressSet;
event RewardsTransferred(address indexed holder, uint amount);
event ReferralFeeTransferred(address indexed referrer, uint amount);
event Reinvest(address indexed holder, uint amount);
event EmergencyDeclared(address owner);
event StakingFeeChanged(uint fee);
event UnstakingFeeChanged(uint fee);
event RewardRateChanged(uint rewardRate);
event MaxPoolSizeChanged(uint maxPoolSize);
// ============================= CONTRACT VARIABLES ==============================
// stake token contract address
address public constant TRUSTED_TOKEN_ADDRESS = 0x39b46B212bDF15b42B166779b9d1787A68b9D0c3;
// earnings reward rate
uint public REWARD_RATE_X_100 = 1250;
uint public constant REWARD_INTERVAL = 365 days;
// staking fee
uint public STAKING_FEE_RATE_X_100 = 0;
// unstaking fee
uint public UNSTAKING_FEE_RATE_X_100 = 0;
// this % of earned rewards go to referrer
uint public constant REFERRAL_FEE_RATE_X_100 = 500;
// unstaking possible after 72 hours
uint public LOCKUP_TIME = 0;
uint public constant ADMIN_CAN_CLAIM_AFTER = 395 days;
uint public constant EMERGENCY_WAIT_TIME = 3 days;
// max pool size
uint public maxPoolSize = 5000000e18;
// ========================= END CONTRACT VARIABLES ==============================
uint public totalClaimedRewards = 0;
uint public totalClaimedReferralFee = 0;
uint public totalDeposited = 0;
uint public immutable contractStartTime;
uint public adminClaimableTime;
bool public isEmergency = false;
// Contracts are not allowed to deposit, claim or withdraw
modifier noContractsAllowed() {
require(!(address(msg.sender).isContract()) && tx.origin == msg.sender, "No Contracts Allowed!");
_;
}
modifier notDuringEmergency() {
require(!isEmergency, "Cannot execute during emergency!");
_;
}
function declareEmergency() external onlyOwner notDuringEmergency {
isEmergency = true;
adminClaimableTime = now.add(EMERGENCY_WAIT_TIME);
LOCKUP_TIME = 0;
emit EmergencyDeclared(owner);
}
EnumerableSet.AddressSet private holders;
mapping (address => uint) public depositedTokens;
mapping (address => uint) public stakingTime;
mapping (address => uint) public lastClaimedTime;
mapping (address => uint) public totalEarnedTokens;
mapping (address => uint) public rewardsPendingClaim;
mapping (address => address) public referrals;
mapping (address => uint) public totalReferralFeeEarned;
mapping (address => EnumerableSet.AddressSet) private activeReferredAddressesOfUser;
mapping (address => EnumerableSet.AddressSet) private totalReferredAddressesOfUser;
constructor() public {
contractStartTime = now;
adminClaimableTime = now.add(ADMIN_CAN_CLAIM_AFTER);
}
function updateAccount(address account) private {
uint pendingDivs = getPendingDivs(account);
if (pendingDivs > 0) {
uint referralFee = pendingDivs.mul(REFERRAL_FEE_RATE_X_100).div(100e2);
uint pendingDivsAfterFee = pendingDivs.sub(referralFee);
bool success = transferReferralFeeIfPossible(referrals[account], referralFee);
uint amount = pendingDivs;
if (success) {
amount = pendingDivsAfterFee;
}
rewardsPendingClaim[account] = rewardsPendingClaim[account].add(amount);
totalEarnedTokens[account] = totalEarnedTokens[account].add(amount);
totalClaimedRewards = totalClaimedRewards.add(amount);
}
lastClaimedTime[account] = now;
}
function transferReferralFeeIfPossible(address account, uint amount) private returns (bool) {
if (account != address(0) && amount > 0) {
totalReferralFeeEarned[account] = totalReferralFeeEarned[account].add(amount);
require(Token(TRUSTED_TOKEN_ADDRESS).transfer(account, amount), "Could not transfer referral fee!");
totalClaimedReferralFee = totalClaimedReferralFee.add(amount);
emit ReferralFeeTransferred(account, amount);
return true;
}
return false;
}
function getPendingDivs(address _holder) public view returns (uint) {
if (!holders.contains(_holder)) return 0;
if (depositedTokens[_holder] == 0) return 0;
uint timeDiff;
uint stakingEndTime = contractStartTime.add(REWARD_INTERVAL);
uint _now = now;
if (_now > stakingEndTime) {
_now = stakingEndTime;
}
if (lastClaimedTime[_holder] >= _now) {
timeDiff = 0;
} else {
timeDiff = _now.sub(lastClaimedTime[_holder]);
}
uint stakedAmount = depositedTokens[_holder];
uint pendingDivs = stakedAmount
.mul(REWARD_RATE_X_100)
.mul(timeDiff)
.div(REWARD_INTERVAL)
.div(1e4);
return pendingDivs;
}
function getTotalPendingDivs(address _holder) external view returns (uint) {
uint pending = getPendingDivs(_holder);
uint awaitingClaim = rewardsPendingClaim[_holder];
return pending.add(awaitingClaim);
}
function getNumberOfHolders() external view returns (uint) {
return holders.length();
}
function getNumberOfReferredStakers(address referrer) external view returns (uint _activeStakers, uint _totalStakers) {
_activeStakers = activeReferredAddressesOfUser[referrer].length();
_totalStakers = totalReferredAddressesOfUser[referrer].length();
}
function getReferredStaker(address account, uint i) external view returns (address _staker, uint _totalEarned) {
_staker = totalReferredAddressesOfUser[account].at(i);
_totalEarned = totalEarnedTokens[_staker];
}
function getActiveReferredStaker(address account, uint i) external view returns (address _staker, uint _totalEarned) {
_staker = activeReferredAddressesOfUser[account].at(i);
_totalEarned = totalEarnedTokens[_staker];
}
function stake(uint amountToStake, address referrer) external noContractsAllowed notDuringEmergency {
require(amountToStake > 0, "Cannot deposit 0 Tokens");
require(Token(TRUSTED_TOKEN_ADDRESS).transferFrom(msg.sender, address(this), amountToStake), "Insufficient Token Allowance");
require(totalDeposited.add(amountToStake) <= maxPoolSize, "Max Pool Size Has Reached");
updateAccount(msg.sender);
uint fee = amountToStake.mul(STAKING_FEE_RATE_X_100).div(1e4);
uint amountAfterFee = amountToStake.sub(fee);
require(Token(TRUSTED_TOKEN_ADDRESS).transfer(owner, fee), "Could not transfer deposit fee.");
depositedTokens[msg.sender] = depositedTokens[msg.sender].add(amountAfterFee);
holders.add(msg.sender);
if (referrals[msg.sender] == address(0)) {
referrals[msg.sender] = referrer;
}
totalReferredAddressesOfUser[referrals[msg.sender]].add(msg.sender);
activeReferredAddressesOfUser[referrals[msg.sender]].add(msg.sender);
stakingTime[msg.sender] = now;
totalDeposited = totalDeposited.add(amountToStake);
}
function unstake(uint amountToWithdraw) external noContractsAllowed {
require(depositedTokens[msg.sender] >= amountToWithdraw, "Invalid amount to withdraw");
require(now.sub(stakingTime[msg.sender]) > LOCKUP_TIME, "You recently staked, please wait before withdrawing.");
updateAccount(msg.sender);
uint fee = amountToWithdraw.mul(UNSTAKING_FEE_RATE_X_100).div(1e4);
uint amountAfterFee = amountToWithdraw.sub(fee);
require(Token(TRUSTED_TOKEN_ADDRESS).transfer(owner, fee), "Could not transfer withdraw fee.");
require(Token(TRUSTED_TOKEN_ADDRESS).transfer(msg.sender, amountAfterFee), "Could not transfer tokens.");
depositedTokens[msg.sender] = depositedTokens[msg.sender].sub(amountToWithdraw);
if (holders.contains(msg.sender) && depositedTokens[msg.sender] == 0) {
holders.remove(msg.sender);
activeReferredAddressesOfUser[referrals[msg.sender]].remove(msg.sender);
}
}
// emergency unstake without caring about pending earnings
// pending earnings will be lost / set to 0 if used emergency unstake
function emergencyUnstake(uint amountToWithdraw) external noContractsAllowed {
require(depositedTokens[msg.sender] >= amountToWithdraw, "Invalid amount to withdraw");
require(now.sub(stakingTime[msg.sender]) > LOCKUP_TIME, "You recently staked, please wait before withdrawing.");
// set pending earnings to 0 here
lastClaimedTime[msg.sender] = now;
uint fee = amountToWithdraw.mul(UNSTAKING_FEE_RATE_X_100).div(1e4);
uint amountAfterFee = amountToWithdraw.sub(fee);
require(Token(TRUSTED_TOKEN_ADDRESS).transfer(owner, fee), "Could not transfer withdraw fee.");
require(Token(TRUSTED_TOKEN_ADDRESS).transfer(msg.sender, amountAfterFee), "Could not transfer tokens.");
depositedTokens[msg.sender] = depositedTokens[msg.sender].sub(amountToWithdraw);
if (holders.contains(msg.sender) && depositedTokens[msg.sender] == 0) {
holders.remove(msg.sender);
}
}
function claim() external noContractsAllowed notDuringEmergency {
updateAccount(msg.sender);
uint amount = rewardsPendingClaim[msg.sender];
if (amount > 0) {
rewardsPendingClaim[msg.sender] = 0;
require(Token(TRUSTED_TOKEN_ADDRESS).transfer(msg.sender, amount), "Could not transfer earned tokens.");
emit RewardsTransferred(msg.sender, amount);
}
}
function reInvest() external noContractsAllowed notDuringEmergency {
updateAccount(msg.sender);
uint amount = rewardsPendingClaim[msg.sender];
if (amount > 0) {
rewardsPendingClaim[msg.sender] = 0;
// re-invest here
depositedTokens[msg.sender] = depositedTokens[msg.sender].add(amount);
// stakingTime[msg.sender] = now;
emit Reinvest(msg.sender, amount);
}
}
function getStakersList(uint startIndex, uint endIndex)
public
view
returns (address[] memory stakers,
uint[] memory stakingTimestamps,
uint[] memory lastClaimedTimeStamps,
uint[] memory stakedTokens) {
require (startIndex < endIndex);
uint length = endIndex.sub(startIndex);
address[] memory _stakers = new address[](length);
uint[] memory _stakingTimestamps = new uint[](length);
uint[] memory _lastClaimedTimeStamps = new uint[](length);
uint[] memory _stakedTokens = new uint[](length);
for (uint i = startIndex; i < endIndex; i = i.add(1)) {
address staker = holders.at(i);
uint listIndex = i.sub(startIndex);
_stakers[listIndex] = staker;
_stakingTimestamps[listIndex] = stakingTime[staker];
_lastClaimedTimeStamps[listIndex] = lastClaimedTime[staker];
_stakedTokens[listIndex] = depositedTokens[staker];
}
return (_stakers, _stakingTimestamps, _lastClaimedTimeStamps, _stakedTokens);
}
// function to allow admin to set new Max Pool Size
function setMaxPoolSize(uint newPoolSize) public onlyOwner {
maxPoolSize = newPoolSize;
emit MaxPoolSizeChanged(maxPoolSize);
}
// function to allow admin to set new Staking Fee
function setRewardRateX100(uint newRewardRate) public onlyOwner {
REWARD_RATE_X_100 = newRewardRate;
emit RewardRateChanged(REWARD_RATE_X_100);
}
// function to allow admin to set new Staking Fee
function setStakingFeeRateX100(uint newStakingFeeRateX100) public onlyOwner {
require(newStakingFeeRateX100 < 100e2, "Invalid fee!");
STAKING_FEE_RATE_X_100 = newStakingFeeRateX100;
emit StakingFeeChanged(STAKING_FEE_RATE_X_100);
}
// function to allow admin to set new Unstaking Fee
function setUnstakingFeeRateX100(uint newUnstakingFeeRateX100) public onlyOwner {
require(newUnstakingFeeRateX100 < 100e2, "Invalid fee!");
UNSTAKING_FEE_RATE_X_100 = newUnstakingFeeRateX100;
emit UnstakingFeeChanged(UNSTAKING_FEE_RATE_X_100);
}
// function to allow admin to claim *other* ERC20 tokens sent to this contract (by mistake)
function transferAnyERC20Token(address tokenAddress, address recipient, uint amount) external onlyOwner {
require (now > adminClaimableTime, "Contract not expired yet!");
require (Token(tokenAddress).transfer(recipient, amount), "Transfer failed!");
}
// function to allow admin to claim *other* ERC20 tokens sent to this contract (by mistake)
function transferAnyLegacyERC20Token(address tokenAddress, address recipient, uint amount) external onlyOwner {
require (now > adminClaimableTime, "Contract not expired yet!");
LegacyToken(tokenAddress).transfer(recipient, amount);
}
}