Contract Name:
FaaSRewardFund
Contract Source Code:
File 1 of 1 : FaaSRewardFund
/**
*Submitted for verification at Etherscan.io on 2020-11-22
*/
// SPDX-License-Identifier: MIT
pragma solidity 0.6.12;
pragma experimental ABIEncoderV2;
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
}
/**
* @dev 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);
}
}
}
}
/**
* @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");
}
}
}
interface IBPool is IERC20 {
function version() external view returns(uint);
function swapExactAmountIn(address, uint, address, uint, uint) external returns (uint, uint);
function swapExactAmountOut(address, uint, address, uint, uint) external returns (uint, uint);
function calcInGivenOut(uint, uint, uint, uint, uint, uint) external pure returns (uint);
function calcOutGivenIn(uint, uint, uint, uint, uint, uint) external pure returns (uint);
function getDenormalizedWeight(address) external view returns (uint);
function swapFee() external view returns (uint);
function setSwapFee(uint _swapFee) external;
function bind(address token, uint balance, uint denorm) external;
function rebind(address token, uint balance, uint denorm) external;
function finalize(
uint _swapFee,
uint _initPoolSupply,
address[] calldata _bindTokens,
uint[] calldata _bindDenorms
) external;
function setPublicSwap(bool _publicSwap) external;
function setController(address _controller) external;
function setExchangeProxy(address _exchangeProxy) external;
function getFinalTokens() external view returns (address[] memory tokens);
function getTotalDenormalizedWeight() external view returns (uint);
function getBalance(address token) external view returns (uint);
function joinPool(uint poolAmountOut, uint[] calldata maxAmountsIn) external;
function joinPoolFor(address account, uint rewardAmountOut, uint[] calldata maxAmountsIn) external;
function joinswapPoolAmountOut(address tokenIn, uint poolAmountOut, uint maxAmountIn) external returns (uint tokenAmountIn);
function exitPool(uint poolAmountIn, uint[] calldata minAmountsOut) external;
function exitswapPoolAmountIn(address tokenOut, uint poolAmountIn, uint minAmountOut) external returns (uint tokenAmountOut);
function exitswapExternAmountOut(address tokenOut, uint tokenAmountOut, uint maxPoolAmountIn) external returns (uint poolAmountIn);
function joinswapExternAmountIn(
address tokenIn,
uint tokenAmountIn,
uint minPoolAmountOut
) external returns (uint poolAmountOut);
function finalizeRewardFundInfo(address _rewardFund, uint _unstakingFrozenTime) external;
function addRewardPool(IERC20 _rewardToken, uint256 _startBlock, uint256 _endRewardBlock, uint256 _rewardPerBlock,
uint256 _lockRewardPercent, uint256 _startVestingBlock, uint256 _endVestingBlock) external;
}
interface IFreeFromUpTo {
function freeFromUpTo(address from, uint256 value) external returns (uint256 freed);
}
interface IBFactory {
function newBPool() external returns (IBPool);
}
interface IValueLiquidRegistry {
function getBestPoolsWithLimit(address, address, uint) external view returns (address[] memory);
}
interface IWETH {
function deposit() external payable;
function allowance(address owner, address spender) external view returns (uint256);
function transfer(address to, uint value) external returns (bool);
function withdraw(uint) external;
function balanceOf(address account) external view returns (uint256);
}
// Token pool of arbitrary ERC20 token.
// This is owned and used by a parent FaaSPool.
contract FaaSRewardFund {
using SafeERC20 for IERC20;
using SafeMath for uint256;
event NewAdmin(address indexed newAdmin);
event NewPendingAdmin(address indexed newPendingAdmin);
event NewDelay(uint indexed newDelay);
event CancelTransaction(bytes32 indexed txHash, address indexed target, uint value, string signature, bytes data, uint eta);
event ExecuteTransaction(bytes32 indexed txHash, address indexed target, uint value, string signature, bytes data, uint eta);
event QueueTransaction(bytes32 indexed txHash, address indexed target, uint value, string signature, bytes data, uint eta);
uint public constant GRACE_PERIOD = 14 days;
uint public constant MINIMUM_DELAY = 1 days;
uint public constant MAXIMUM_DELAY = 30 days;
bool private _initialized;
address public faasPool;
address public admin;
address public pendingAdmin;
uint public delay;
bool public admin_initialized;
mapping(bytes32 => bool) public queuedTransactions;
constructor() public {
admin_initialized = false;
_initialized = false;
}
function initialized(address admin_, uint delay_, address _faasPool) public {
require(_initialized == false, "Timelock::constructor: Delay must exceed minimum delay.");
require(delay_ >= MINIMUM_DELAY, "Timelock::constructor: Delay must exceed minimum delay.");
require(delay_ <= MAXIMUM_DELAY, "Timelock::constructor: Delay must not exceed maximum delay.");
admin = admin_;
faasPool = _faasPool;
delay = delay_;
_initialized = true;
}
// XXX: function() external payable { }
receive() external payable {}
function setDelay(uint delay_) public {
require(msg.sender == address(this), "Timelock::setDelay: Call must come from Timelock.");
require(delay_ >= MINIMUM_DELAY, "Timelock::setDelay: Delay must exceed minimum delay.");
require(delay_ <= MAXIMUM_DELAY, "Timelock::setDelay: Delay must not exceed maximum delay.");
delay = delay_;
emit NewDelay(delay);
}
function acceptAdmin() public {
require(msg.sender == pendingAdmin, "Timelock::acceptAdmin: Call must come from pendingAdmin.");
admin = msg.sender;
pendingAdmin = address(0);
emit NewAdmin(admin);
}
function setPendingAdmin(address pendingAdmin_) public {
// allows one time setting of admin for deployment purposes
if (admin_initialized) {
require(msg.sender == address(this), "Timelock::setPendingAdmin: Call must come from Timelock.");
} else {
require(msg.sender == admin, "Timelock::setPendingAdmin: First call must come from admin.");
admin_initialized = true;
}
pendingAdmin = pendingAdmin_;
emit NewPendingAdmin(pendingAdmin);
}
function queueTransaction(address target, uint value, string memory signature, bytes memory data, uint eta) public returns (bytes32) {
require(msg.sender == admin, "Timelock::queueTransaction: Call must come from admin.");
require(eta >= getBlockTimestamp().add(delay), "Timelock::queueTransaction: Estimated execution block must satisfy delay.");
bytes32 txHash = keccak256(abi.encode(target, value, signature, data, eta));
queuedTransactions[txHash] = true;
emit QueueTransaction(txHash, target, value, signature, data, eta);
return txHash;
}
function cancelTransaction(address target, uint value, string memory signature, bytes memory data, uint eta) public {
require(msg.sender == admin, "Timelock::cancelTransaction: Call must come from admin.");
bytes32 txHash = keccak256(abi.encode(target, value, signature, data, eta));
queuedTransactions[txHash] = false;
emit CancelTransaction(txHash, target, value, signature, data, eta);
}
function executeTransaction(address target, uint value, string memory signature, bytes memory data, uint eta) public payable returns (bytes memory) {
require(msg.sender == admin, "Timelock::executeTransaction: Call must come from admin.");
bytes32 txHash = keccak256(abi.encode(target, value, signature, data, eta));
require(queuedTransactions[txHash], "Timelock::executeTransaction: Transaction hasn't been queued.");
require(getBlockTimestamp() >= eta, "Timelock::executeTransaction: Transaction hasn't surpassed time lock.");
require(getBlockTimestamp() <= eta.add(GRACE_PERIOD), "Timelock::executeTransaction: Transaction is stale.");
queuedTransactions[txHash] = false;
bytes memory callData;
if (bytes(signature).length == 0) {
callData = data;
} else {
callData = abi.encodePacked(bytes4(keccak256(bytes(signature))), data);
}
// solium-disable-next-line security/no-call-value
(bool success, bytes memory returnData) = target.call{value : value}(callData);
require(success, "Timelock::executeTransaction: Transaction execution reverted.");
emit ExecuteTransaction(txHash, target, value, signature, data, eta);
return returnData;
}
function getBlockTimestamp() internal view returns (uint) {
return block.timestamp;
}
function balance(IERC20 _token) public view returns (uint256) {
return _token.balanceOf(address(this));
}
function safeTransfer(IERC20 _token, address _to, uint256 _value) external {
require(msg.sender == faasPool, "!faasPool");
uint256 _tokenBal = balance(_token);
_token.safeTransfer(_to, _tokenBal > _value ? _value : _tokenBal);
}
/**
* This function allows governance to take unsupported tokens out of the contract. This is in an effort to make someone whole, should they seriously mess up.
* There is no guarantee governance will vote to return these. It also allows for removal of airdropped tokens.
*/
function governanceRecoverUnsupported(IERC20 _token, uint _amount, address _to) external {
require(msg.sender == address(this), "!timelock");
if ((address(_token) == address(0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE))) {
(bool xfer,) = _to.call{value : _amount}("");
require(xfer, "ERR_ETH_FAILED");
} else {
_token.safeTransfer(_to, _amount);
}
}
}
contract FaasPoolProxy {
using SafeMath for uint256;
using SafeERC20 for IERC20;
using Address for address;
IFreeFromUpTo public constant chi = IFreeFromUpTo(0x0000000000004946c0e9F43F4Dee607b0eF1fA1c);
modifier discountCHI(uint8 flag) {
if ((flag & 0x1) == 0) {
_;
} else {
uint256 gasStart = gasleft();
_;
uint256 gasSpent = 21000 + gasStart - gasleft() + 16 * msg.data.length;
chi.freeFromUpTo(msg.sender, (gasSpent + 14154) / 41130);
}
}
IWETH weth;
address private constant ETH_ADDRESS = address(0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE);
address public governance;
address public exchangeProxy;
constructor(address _weth,address _exchangeProxy) public {
weth = IWETH(_weth);
governance = tx.origin;
exchangeProxy = _exchangeProxy;
}
struct PoolRewardInfo {
IERC20 rewardToken;
uint256 startBlock;
uint256 endRewardBlock;
uint256 rewardPerBlock;
uint256 lockRewardPercent;
uint256 startVestingBlock;
uint256 endVestingBlock;
uint unstakingFrozenTime;
uint rewardFundAmount;
}
struct PoolInfo {
IBFactory factory;
address[] tokens;
uint[] balances;
uint[] denorms;
uint swapFee;
uint initPoolSupply;
}
receive() external payable {}
function setExchangeProxy(address _exchangeProxy) external {
require(msg.sender == governance, "!governance");
exchangeProxy = _exchangeProxy;
}
function createInternal(
PoolInfo calldata poolInfo
) internal returns (IBPool pool) {
address[] memory tokens = poolInfo.tokens;
require(tokens.length == poolInfo.balances.length, "ERR_LENGTH_MISMATCH");
require(tokens.length == poolInfo.denorms.length, "ERR_LENGTH_MISMATCH");
pool = poolInfo.factory.newBPool();
bool containsETH = false;
for (uint i = 0; i < tokens.length; i++) {
if (transferFromAllTo(tokens[i], poolInfo.balances[i], address(pool))) {
containsETH = true;
tokens[i] = address(weth);
}
}
require(msg.value == 0 || containsETH, "!invalid payable");
pool.finalize(poolInfo.swapFee, poolInfo.initPoolSupply, tokens, poolInfo.denorms);
}
function createFaaSReward(
PoolInfo calldata poolInfo,
PoolRewardInfo calldata poolRewardInfo,
uint8 flag
) payable external discountCHI(flag) returns (IBPool pool) {
pool = createInternal(poolInfo);
{
FaaSRewardFund faasRewardFund = new FaaSRewardFund();
pool.finalizeRewardFundInfo(address(faasRewardFund), poolRewardInfo.unstakingFrozenTime);
pool.addRewardPool(
poolRewardInfo.rewardToken,
poolRewardInfo.startBlock,
poolRewardInfo.endRewardBlock,
poolRewardInfo.rewardPerBlock,
poolRewardInfo.lockRewardPercent,
poolRewardInfo.startVestingBlock,
poolRewardInfo.endVestingBlock);
transferFromAllTo(address(poolRewardInfo.rewardToken), poolRewardInfo.rewardFundAmount, address(faasRewardFund));
faasRewardFund.initialized(msg.sender, poolRewardInfo.unstakingFrozenTime + 1 days, address(pool));
pool.setExchangeProxy(exchangeProxy);
pool.setController(address(faasRewardFund));
}
uint lpAmount = pool.balanceOf(address(this));
if (lpAmount > 0) {
IERC20(pool).safeTransfer(msg.sender, lpAmount);
}
}
function isETH(IERC20 token) internal pure returns (bool) {
return (address(token) == ETH_ADDRESS);
}
function transferFromAllTo(address token, uint amount, address to) internal returns (bool containsETH) {
if (isETH(IERC20(token))) {
require(amount == msg.value, "!invalid amount");
weth.deposit{value : amount}();
weth.transfer(to, amount);
containsETH = true;
} else {
IERC20(token).safeTransferFrom(msg.sender, to, amount);
}
return containsETH;
}
function transferFromAllAndApprove(address token, uint amount, address spender) internal returns (bool containsETH) {
if (isETH(IERC20(token))) {
require(amount == msg.value, "!invalid amount");
weth.deposit{value : amount}();
if (weth.allowance(address(this), spender) > 0) {
IERC20(address(weth)).safeApprove(address(spender), 0);
}
IERC20(address(weth)).safeApprove(spender, amount);
containsETH = true;
} else {
IERC20(token).safeTransferFrom(msg.sender, address(this), amount);
if (IERC20(token).allowance(address(this), spender) > 0) {
IERC20(token).safeApprove(spender, 0);
}
IERC20(token).safeApprove(spender, amount);
}
return containsETH;
}
}