Contract Source Code:
// SPDX-License-Identifier: MIT
pragma solidity 0.8.23;
import {ReentrancyGuard} from "../../lib/openzeppelin-contracts/contracts/security/ReentrancyGuard.sol";
import {Multicall} from "../../lib/openzeppelin-contracts/contracts/utils/Multicall.sol";
import {SafeERC20} from "../../lib/openzeppelin-contracts/contracts/token/ERC20/utils/SafeERC20.sol";
import {IERC20} from "../../lib/openzeppelin-contracts/contracts/interfaces/IERC20.sol";
import {IVault} from "../interfaces/IVault.sol";
import {IYieldStrippedToken} from "../interfaces/IYieldStrippedToken.sol";
import {BlastManager} from "../libraries/BlastManager.sol";
import {FixedRate} from "../FixedRate.sol";
import {VariableRate} from "../VariableRate.sol";
import {DuoAssetToken} from "./DuoAssetToken.sol";
import {CoreRef} from "../core/CoreRef.sol";
address constant WETH = 0x4300000000000000000000000000000000000004;
interface IWETH {
function deposit() external payable;
function withdraw(uint256) external;
}
contract WrapMintV3 is ReentrancyGuard, Multicall, CoreRef, BlastManager {
using SafeERC20 for IERC20;
/* Constants */
uint256 public constant BASIS = 1 ether;
/* Immutables */
// solhint-disable var-name-mixedcase
address public TOKEN;
address public VAULT;
/* Variable */
address public duoAssetToken;
address private _treasury;
uint256 private _treasuryRate;
/* Storage */
mapping(address => bool) public whitelistedExchanges;
mapping(address => address) public fixedRateContracts;
mapping(address => address) public variableRateContracts;
/* Events */
event MintFixedRate(address indexed fixedRate, address indexed owner, uint256 principal, uint256 yield);
event BurnFixedRate(address indexed fixedRate, uint256 principal, uint256 yieldToUnlock, uint256 yieldToRelease);
event MintVariableRate(address indexed variableRate, address indexed owner, uint256 amount);
event BurnVariableRate(address indexed variableRate, uint256 amount, uint256 yield, uint256 fee);
event UpdateExchange(address indexed exchange, bool status);
event UpdateDuoAssetToken(address indexed duoAssetToken);
constructor(address token, address vault, address core) CoreRef(core) {
TOKEN = token;
VAULT = vault;
}
/*==============================================================
Swap Logic
==============================================================*/
/**
* @notice swap the token using a whitelisted exchange
* @param exchange the exchange to swap on
* @param token the source token to swap
* @param amountIn the amount of token to swap
* @param amountOutMin the minimum amount of token to receive
* @param data the swap data
* @return amountOut the amount of token received
*/
function _swap(
address exchange,
address token,
uint256 amountIn,
uint256 amountOutMin,
bytes calldata data
) internal returns (uint256 amountOut) {
require(whitelistedExchanges[exchange], "WrapMint: unauthorized exchange");
// approve spending to exchange
IERC20(token).approve(exchange, amountIn);
// swap
// solhint-disable-next-line avoid-low-level-calls
(bool success, ) = exchange.call(data);
require(success, "WrapMint: swap failed");
// received amount slippage
amountOut = IERC20(IYieldStrippedToken(TOKEN).token()).balanceOf(address(this));
require(amountOut >= amountOutMin, "WrapMint: slippage");
// approve spending back to zero
IERC20(token).approve(exchange, 0);
}
/*==============================================================
Mint Fixed Rate
==============================================================*/
/**
* @notice mint a fixed rate contract (represented as NFT), input with ERC20 token
*/
function mintFixedRate(
address exchange,
address token,
uint256 amountIn,
uint256 amountOutMin,
uint256 minLockedYield,
bytes calldata data
) external nonReentrant returns (address fixedRateContract, uint256 amountOut, uint256 lockedYield) {
// transfer input amount
IERC20(token).safeTransferFrom(msg.sender, address(this), amountIn);
(fixedRateContract, amountOut, lockedYield) = _mintFixedRate(
exchange,
token,
amountIn,
amountOutMin,
minLockedYield,
data
);
// refund remaining
uint256 remaining = IERC20(token).balanceOf(address(this));
if (remaining > 0) {
IERC20(token).safeTransfer(msg.sender, remaining);
}
}
/**
* @notice mint a fixed rate contract (represented as NFT), input with ETH
*/
function mintFixedRateEth(
address exchange,
uint256 amountIn,
uint256 amountOutMin,
uint256 minLockedYield,
bytes calldata data
) external payable nonReentrant returns (address fixedRateContract, uint256 amountOut, uint256 lockedYield) {
// wrap to WETH
require(msg.value == amountIn, "WrapMint: insufficient ETH");
IWETH(WETH).deposit{value: amountIn}();
(fixedRateContract, amountOut, lockedYield) = _mintFixedRate(
exchange,
WETH,
amountIn,
amountOutMin,
minLockedYield,
data
);
// refund remaining
uint256 remaining = IERC20(WETH).balanceOf(address(this));
if (remaining > 0) {
IWETH(WETH).withdraw(remaining);
payable(msg.sender).transfer(remaining);
}
}
/**
* @notice mint a fixed rate contract (represented as NFT)
* @param exchange the exchange to swap on
* @param token the source token to swap
* @param amountIn the amount of token to swap
* @param amountOutMin the minimum amount of token to receive
* @param minLockedYield the minimum amount of yield to lock
* @param data the swap data
* @return fixedRateContract the address of the fixed rate contract
* @return principal the amount of principal received
* @return lockedYield the amount of yield locked
*/
function _mintFixedRate(
address exchange,
address token,
uint256 amountIn,
uint256 amountOutMin,
uint256 minLockedYield,
bytes calldata data
) internal returns (address fixedRateContract, uint256 principal, uint256 lockedYield) {
// swap if needed
address underlyingToken = IYieldStrippedToken(TOKEN).token();
uint256 amountOut = amountIn; // if token is already underlying, no swap needed
if (token != underlyingToken) {
amountOut = _swap(exchange, token, amountIn, amountOutMin, data);
}
// approve the underlying spending to yield stripped token
IERC20(underlyingToken).approve(TOKEN, amountOut);
// wrap
///@dev if token is already wrapped TOKEN, call FixedRateNFT.mint directly
IYieldStrippedToken(TOKEN).wrap(amountOut);
// approve the underlying spending back to zero
IERC20(underlyingToken).approve(TOKEN, 0);
// approve wrapped token spending to vault
IERC20(TOKEN).approve(VAULT, amountOut);
// mint fixed rate contract
(fixedRateContract, lockedYield, ) = IVault(VAULT).mintFixedRate(amountOut, minLockedYield, address(this));
// actual principal amount after fees
principal = FixedRate(fixedRateContract).principal();
// approve wrapped token spending back to zero
IERC20(TOKEN).approve(VAULT, 0);
// mark the ownership of fixed rate contract
fixedRateContracts[fixedRateContract] = msg.sender;
// mint asset token to sender
DuoAssetToken(duoAssetToken).mint(msg.sender, principal + lockedYield);
emit MintFixedRate(fixedRateContract, msg.sender, principal, lockedYield);
}
/*==============================================================
Burn Fixed Rate
==============================================================*/
/**
* @notice burn a fixed rate contract, together with asset token, receiving principal and yield
* @param fixedRate the fixed rate contract to burn
* @param amount the amount of fixed rate contract to burn
* @return yieldToUnlock the amount of yield to unlock
* @return yieldToRelease the amount of yield to release
*/
function burnFixedRate(
address fixedRate,
uint256 amount
) external nonReentrant returns (uint256 yieldToUnlock, uint256 yieldToRelease) {
// caller must be owner
require(fixedRateContracts[fixedRate] == msg.sender, "WrapMint: unauthorized");
// use fixed rate contract to burn
(yieldToUnlock, yieldToRelease) = FixedRate(fixedRate).burn(amount);
// transfer the underlying to sender
IYieldStrippedToken(TOKEN).unwrapTo(amount + yieldToRelease, msg.sender);
// must burn the same amount of asset token
DuoAssetToken(duoAssetToken).burnFrom(msg.sender, amount + yieldToUnlock);
emit BurnFixedRate(fixedRate, amount, yieldToUnlock, yieldToRelease);
}
/*==============================================================
Withdraw Fixed Rate
==============================================================*/
/**
* @notice withdraw the principal of fixed rate contract, at emergency, bypassing vault
* @param fixedRate the fixed rate contract to withdraw
* @param amount the amount of principal to withdraw
*/
function withdrawFixedRate(address fixedRate, uint256 amount) external nonReentrant {
// caller must be owner
require(fixedRateContracts[fixedRate] == msg.sender, "WrapMint: unauthorized");
// use fixed rate contract to withdraw
FixedRate(fixedRate).withdraw(amount);
// transfer the underlying to sender
IYieldStrippedToken(TOKEN).unwrapTo(amount, msg.sender);
// must burn the same amount of asset token
DuoAssetToken(duoAssetToken).burnFrom(msg.sender, amount);
}
/*==============================================================
Mint Variable Rate
==============================================================*/
/**
* @notice mint a variable rate contract, input with ERC20 token
*/
function mintVariableRate(
address exchange,
address token,
uint256 amountIn,
uint256 amountOutMin,
bytes calldata data
) external nonReentrant returns (address variableRateContract, uint256 amountOut) {
// transfer input amount
IERC20(token).safeTransferFrom(msg.sender, address(this), amountIn);
(variableRateContract, amountOut) = _mintVariableRate(exchange, token, amountIn, amountOutMin, data);
// refund remaining
uint256 remaining = IERC20(token).balanceOf(address(this));
if (remaining > 0) {
IERC20(token).safeTransfer(msg.sender, remaining);
}
}
/**
* @notice mint a variable rate contract, input with ETH
*/
function mintVariableRateEth(
address exchange,
uint256 amountIn,
uint256 amountOutMin,
bytes calldata data
) external payable nonReentrant returns (address variableRateContract, uint256 amountOut) {
// wrap to WETH
require(msg.value == amountIn, "WrapMint: insufficient ETH");
IWETH(WETH).deposit{value: amountIn}();
(variableRateContract, amountOut) = _mintVariableRate(exchange, WETH, amountIn, amountOutMin, data);
// refund remaining
uint256 remaining = IERC20(WETH).balanceOf(address(this));
if (remaining > 0) {
IWETH(WETH).withdraw(remaining);
payable(msg.sender).transfer(remaining);
}
}
/**
* @notice mint a variable rate contract
* @param exchange the exchange to swap on
* @param token the source token to swap
* @param amountIn the amount of token to swap
* @param amountOutMin the minimum amount of token to receive
* @param data the swap data
* @return variableRateContract the address of the variable rate contract
* @return amountOut the amount of token received
*/
function _mintVariableRate(
address exchange,
address token,
uint256 amountIn,
uint256 amountOutMin,
bytes calldata data
) internal returns (address variableRateContract, uint256 amountOut) {
// swap if needed
address underlyingToken = IYieldStrippedToken(TOKEN).token();
amountOut = amountIn; // if token is already underlying, no swap needed
if (token != underlyingToken) {
amountOut = _swap(exchange, token, amountIn, amountOutMin, data);
}
// approve the underlying spending to yield stripped token
IERC20(underlyingToken).approve(TOKEN, amountOut);
// wrap
///@dev if token is already wrapped TOKEN, call VAULT.mintVariableRate directly
IYieldStrippedToken(TOKEN).wrap(amountOut);
// approve the underlying spending back to zero
IERC20(underlyingToken).approve(TOKEN, 0);
// approve spending to vault
IERC20(TOKEN).approve(VAULT, amountOut);
// mint variable rate contract
variableRateContract = IVault(VAULT).mintVariableRate(amountOut, address(this));
// approve spending back to zero
IERC20(TOKEN).approve(VAULT, 0);
// mark the ownership of variable rate contract
variableRateContracts[variableRateContract] = msg.sender;
// mint asset token to sender
DuoAssetToken(duoAssetToken).mint(msg.sender, amountOut);
emit MintVariableRate(variableRateContract, msg.sender, amountOut);
}
/*==============================================================
Burn Variable Rate
==============================================================*/
/**
* @notice burn a variable rate contract, together with asset token, receiving principal and yield
* @param variableRate the variable rate contract to burn
* @param amount the amount of variable rate contract to burn
* @param minYield the minimum amount of yield to unlock
* @return yield the amount of yield unlocked
* @return fee the amount of fee
*/
function burnVariableRate(
address variableRate,
uint256 amount,
uint256 minYield
) external nonReentrant returns (uint256 yield, uint256 fee) {
// caller must be owner
require(variableRateContracts[variableRate] == msg.sender, "WrapMint: unauthorized");
// use variable rate contract to burn
(yield, fee) = VariableRate(variableRate).burn(amount, minYield);
// take treasury fee
if (_treasuryRate > 0 && _treasury != address(0)) {
uint256 treasured = (yield * _treasuryRate) / BASIS;
yield -= treasured;
IYieldStrippedToken(TOKEN).unwrapTo(treasured, _treasury);
}
// transfer the underlying to sender
IYieldStrippedToken(TOKEN).unwrapTo(amount + yield + fee, msg.sender);
// must burn the principal amount of asset token
DuoAssetToken(duoAssetToken).burnFrom(msg.sender, amount);
emit BurnVariableRate(variableRate, amount, yield, fee);
}
/*==============================================================
Withdraw Variable Rate
==============================================================*/
/**
* @notice withdraw the principal of variable rate contract, at emergency, bypassing vault
* @param variableRate the variable rate contract to withdraw
* @param amount the amount of principal to withdraw
*/
function withdrawVariableRate(address variableRate, uint256 amount) external nonReentrant {
// caller must be owner
require(variableRateContracts[variableRate] == msg.sender, "WrapMint: unauthorized");
// use variable rate contract to withdraw
VariableRate(variableRate).withdraw(amount);
// transfer the underlying to sender
IYieldStrippedToken(TOKEN).unwrapTo(amount, msg.sender);
// must burn the principal amount of asset token
DuoAssetToken(duoAssetToken).burnFrom(msg.sender, amount);
}
/*==============================================================
Admin Control
==============================================================*/
function addExchange(address exchange) external onlyGovernor {
whitelistedExchanges[exchange] = true;
emit UpdateExchange(exchange, true);
}
function removeExchange(address exchange) external onlyGovernor {
whitelistedExchanges[exchange] = false;
emit UpdateExchange(exchange, false);
}
function setDuoAssetToken(address token) external onlyGovernor {
duoAssetToken = token;
emit UpdateDuoAssetToken(token);
}
function setTreasuryRate(uint256 treasuryRate) external onlyGovernor {
require(treasuryRate < BASIS, "WrapMint: invalid treasury rate");
_treasuryRate = treasuryRate;
}
function setTreasury(address treasury) external onlyGovernor {
_treasury = treasury;
}
/*==============================================================
Token Receiver
==============================================================*/
receive() external payable {}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (security/ReentrancyGuard.sol)
pragma solidity ^0.8.0;
/**
* @dev Contract module that helps prevent reentrant calls to a function.
*
* Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
* available, which can be applied to functions to make sure there are no nested
* (reentrant) calls to them.
*
* Note that because there is a single `nonReentrant` guard, functions marked as
* `nonReentrant` may not call one another. This can be worked around by making
* those functions `private`, and then adding `external` `nonReentrant` entry
* points to them.
*
* TIP: If you would like to learn more about reentrancy and alternative ways
* to protect against it, check out our blog post
* https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
*/
abstract contract ReentrancyGuard {
// Booleans are more expensive than uint256 or any type that takes up a full
// word because each write operation emits an extra SLOAD to first read the
// slot's contents, replace the bits taken up by the boolean, and then write
// back. This is the compiler's defense against contract upgrades and
// pointer aliasing, and it cannot be disabled.
// The values being non-zero value makes deployment a bit more expensive,
// but in exchange the refund on every call to nonReentrant will be lower in
// amount. Since refunds are capped to a percentage of the total
// transaction's gas, it is best to keep them low in cases like this one, to
// increase the likelihood of the full refund coming into effect.
uint256 private constant _NOT_ENTERED = 1;
uint256 private constant _ENTERED = 2;
uint256 private _status;
constructor() {
_status = _NOT_ENTERED;
}
/**
* @dev Prevents a contract from calling itself, directly or indirectly.
* Calling a `nonReentrant` function from another `nonReentrant`
* function is not supported. It is possible to prevent this from happening
* by making the `nonReentrant` function external, and making it call a
* `private` function that does the actual work.
*/
modifier nonReentrant() {
_nonReentrantBefore();
_;
_nonReentrantAfter();
}
function _nonReentrantBefore() private {
// On the first call to nonReentrant, _status will be _NOT_ENTERED
require(_status != _ENTERED, "ReentrancyGuard: reentrant call");
// Any calls to nonReentrant after this point will fail
_status = _ENTERED;
}
function _nonReentrantAfter() private {
// By storing the original value once again, a refund is triggered (see
// https://eips.ethereum.org/EIPS/eip-2200)
_status = _NOT_ENTERED;
}
/**
* @dev Returns true if the reentrancy guard is currently set to "entered", which indicates there is a
* `nonReentrant` function in the call stack.
*/
function _reentrancyGuardEntered() internal view returns (bool) {
return _status == _ENTERED;
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/Multicall.sol)
pragma solidity ^0.8.0;
import "./Address.sol";
/**
* @dev Provides a function to batch together multiple calls in a single external call.
*
* _Available since v4.1._
*/
abstract contract Multicall {
/**
* @dev Receives and executes a batch of function calls on this contract.
* @custom:oz-upgrades-unsafe-allow-reachable delegatecall
*/
function multicall(bytes[] calldata data) external virtual returns (bytes[] memory results) {
results = new bytes[](data.length);
for (uint256 i = 0; i < data.length; i++) {
results[i] = Address.functionDelegateCall(address(this), data[i]);
}
return results;
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.3) (token/ERC20/utils/SafeERC20.sol)
pragma solidity ^0.8.0;
import "../IERC20.sol";
import "../extensions/IERC20Permit.sol";
import "../../../utils/Address.sol";
/**
* @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 Address for address;
/**
* @dev Transfer `value` amount of `token` from the calling contract to `to`. If `token` returns no value,
* non-reverting calls are assumed to be successful.
*/
function safeTransfer(IERC20 token, address to, uint256 value) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
}
/**
* @dev Transfer `value` amount of `token` from `from` to `to`, spending the approval given by `from` to the
* calling contract. If `token` returns no value, non-reverting calls are assumed to be successful.
*/
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'
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));
}
/**
* @dev Increase the calling contract's allowance toward `spender` by `value`. If `token` returns no value,
* non-reverting calls are assumed to be successful.
*/
function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
uint256 oldAllowance = token.allowance(address(this), spender);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, oldAllowance + value));
}
/**
* @dev Decrease the calling contract's allowance toward `spender` by `value`. If `token` returns no value,
* non-reverting calls are assumed to be successful.
*/
function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal {
unchecked {
uint256 oldAllowance = token.allowance(address(this), spender);
require(oldAllowance >= value, "SafeERC20: decreased allowance below zero");
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, oldAllowance - value));
}
}
/**
* @dev Set the calling contract's allowance toward `spender` to `value`. If `token` returns no value,
* non-reverting calls are assumed to be successful. Meant to be used with tokens that require the approval
* to be set to zero before setting it to a non-zero value, such as USDT.
*/
function forceApprove(IERC20 token, address spender, uint256 value) internal {
bytes memory approvalCall = abi.encodeWithSelector(token.approve.selector, spender, value);
if (!_callOptionalReturnBool(token, approvalCall)) {
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, 0));
_callOptionalReturn(token, approvalCall);
}
}
/**
* @dev Use a ERC-2612 signature to set the `owner` approval toward `spender` on `token`.
* Revert on invalid signature.
*/
function safePermit(
IERC20Permit token,
address owner,
address spender,
uint256 value,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
) internal {
uint256 nonceBefore = token.nonces(owner);
token.permit(owner, spender, value, deadline, v, r, s);
uint256 nonceAfter = token.nonces(owner);
require(nonceAfter == nonceBefore + 1, "SafeERC20: permit did not succeed");
}
/**
* @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");
require(returndata.length == 0 || abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
}
/**
* @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).
*
* This is a variant of {_callOptionalReturn} that silents catches all reverts and returns a bool instead.
*/
function _callOptionalReturnBool(IERC20 token, bytes memory data) private returns (bool) {
// 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 cannot use {Address-functionCall} here since this should return false
// and not revert is the subcall reverts.
(bool success, bytes memory returndata) = address(token).call(data);
return
success && (returndata.length == 0 || abi.decode(returndata, (bool))) && Address.isContract(address(token));
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (interfaces/IERC20.sol)
pragma solidity ^0.8.0;
import "../token/ERC20/IERC20.sol";
// SPDX-License-Identifier: MIT
pragma solidity 0.8.23;
interface IVault {
/*==============================================================
Event Logs
==============================================================*/
event MintFixedRate(address indexed owner, uint256 id, uint256 mintAmount, uint256 lockedAmount);
event BurnFixedRate(address indexed owner, uint256 id, uint256 burnAmount, uint256 yield);
event MintVariableRate(address indexed owner, uint256 mintAmount);
event BurnVariableRate(address indexed owner, uint256 burnAmount, uint256 yield, uint256 positionFee);
event EstimateYield(uint256 currentRate, bool updated);
event UpdateYieldManager(address indexed newYieldManager);
event UpdateYieldEstimateWindow(uint256 window);
event UpdateCurve(uint256 s1, uint256 s2, uint256 s3, uint256 r1, uint256 r2);
event UpdatePositionFeeRate(uint256 fee);
/*==============================================================
Fixed rate LP deposit
==============================================================*/
/**
* @notice Deposit a principal amount to lock a fixed yield rate until maturity
* @param amount the deposit amount
* @param minLockedYield the minimum amount to lock, for slippage protection
* @param recipient the address to receive the fixedRate contract
* @return owner the address to the fixedRate contract
* @return lockedYield the amount locked, which over time releases the yield at fixed rate
* @return maturityTimestamp the maturity timestamp
*/
function mintFixedRate(
uint256 amount,
uint256 minLockedYield,
address recipient
) external returns (address owner, uint256 lockedYield, uint256 maturityTimestamp);
/*==============================================================
Fixed rate LP withdraw
==============================================================*/
/**
* @notice Withdraw a principal amount from a fixed yield rate deposit
* @param id the deposit id
* @param amount the amount of principal to withdraw
* @return yieldToUnlock the yield to unlock from the locked amount
* @return yieldToRelease the yield to release to the owner
*/
function burnFixedRate(uint256 id, uint256 amount) external returns (uint256 yieldToUnlock, uint256 yieldToRelease);
/*==============================================================
Variable rate LP deposit
==============================================================*/
/**
* @notice Deposit a principal amount for variable yield rate
* @param amount the deposit amount
* @param recipient the address to receive the variableRate contract
* @return owner the address to the variableRate contract
*/
function mintVariableRate(uint256 amount, address recipient) external returns (address owner);
/*==============================================================
Variable rate LP withdraw
==============================================================*/
/**
* @notice Withdraw a principal amount from a variable yield rate deposit
* @param amount the amount of principal to withdraw
* @param minYield the minimum yield to receive, for slippage protection
* @return yield the yield amount
* @return fee the position fee
*/
function burnVariableRate(uint256 amount, uint256 minYield) external returns (uint256 yield, uint256 fee);
/*==============================================================
Helper Functions
==============================================================*/
/**
* @notice get the amount to lock based on the current fixed term rate and the deposit amount
* @param amount the deposit amount
* @return yieldToLock the amount to lock
*/
function getYieldToLock(uint256 amount) external view returns (uint256 yieldToLock);
/**
* @notice get the maximum amount of principal for a fixed term rate
* @return amount the maximum amount of principal
*/
function getMaxFixedRateAmount() external view returns (uint256 amount);
/**
* @notice get the current fixed term rate from idle yield / total yield
* @param amount the deposit amount
* @return rate the current fixed term rate
*/
function getFixedRate(uint256 amount) external view returns (uint256 rate);
/**
* @notice get the total yield from the protocol
* @return totalYield the total yield
*/
function getTotalYield() external view returns (uint256 totalYield);
/**
* @notice get the current yield and position fee accrued to a variable rate LP
* @param owner the address of the LP
* @return yield the current yield
* @return fee the current position fee
*/
function getCurrentVariableRate(address owner) external view returns (uint256 yield, uint256 fee);
/*==============================================================
Admin Logic
==============================================================*/
/**
* @notice Update the yield manager
* @param newYieldManager the new yield manager
*/
function updateYieldManager(address newYieldManager) external;
/**
* @notice Update the fixed term rate curve
* @param s1 the slope of chunk 1
* @param s2 the slope of chunk 2
* @param s3 the slope of chunk 3
* @param r1 the ratio cutoff between chunk 1 and 2
* @param r2 the ratio cutoff between chunk 2 and 3
*/
function updateCurve(uint256 s1, uint256 s2, uint256 s3, uint256 r1, uint256 r2) external;
/**
* @notice Update the position fee
* @param fee the new position fee
*/
function updatePositionFeeRate(uint256 fee) external;
}
// SPDX-License-Identifier: MIT
pragma solidity 0.8.23;
interface IYieldStrippedToken {
function token() external view returns (address);
function totalSupply() external view returns (uint256);
function wrap(uint256 amount) external returns (uint256);
function unwrapTo(uint256 amount, address to) external returns (uint256);
function mint(address account, uint256 amount) external;
function burnFrom(address account, uint256 amount) external;
}
// SPDX-License-Identifier: MIT
pragma solidity 0.8.23;
import {IBlast} from "../interfaces/IBlast.sol";
import {IBlastPoints} from "../interfaces/IBlastPoints.sol";
contract BlastManager {
IBlast public constant BLAST = IBlast(0x4300000000000000000000000000000000000002);
address public manager;
modifier onlyManager() {
require(msg.sender == manager, "Blast: not manager");
_;
}
constructor() {
manager = msg.sender;
BLAST.configureClaimableGas();
}
function claimGas(address recipient, bool isMax) external onlyManager returns (uint256) {
if (isMax) {
return BLAST.claimMaxGas(address(this), recipient);
} else {
return BLAST.claimAllGas(address(this), recipient);
}
}
function setManager(address _manager) external onlyManager {
manager = _manager;
}
function setGasMode(address blastGas) external onlyManager {
IBlast(blastGas).configureClaimableGas();
}
function setPointsOperator(address blastPoints, address operator) external onlyManager {
IBlastPoints(blastPoints).configurePointsOperator(operator);
}
}
// SPDX-License-Identifier: MIT
pragma solidity 0.8.23;
import {ReentrancyGuard} from "../lib/openzeppelin-contracts/contracts/security/ReentrancyGuard.sol";
import {IERC20} from "../lib/openzeppelin-contracts/contracts/interfaces/IERC20.sol";
import {SafeERC20} from "../lib/openzeppelin-contracts/contracts/token/ERC20/utils/SafeERC20.sol";
import {IVault} from "./interfaces/IVault.sol";
import {ICoreRef} from "./core/ICoreRef.sol";
contract FixedRate is ReentrancyGuard {
using SafeERC20 for IERC20;
/* Immutables */
// solhint-disable var-name-mixedcase
address public TOKEN;
address public VAULT;
address public OWNER;
/* Variables */
bool public initialized;
uint256 public id;
uint256 public principal;
uint256 public yield;
uint256 public maturityTimestamp;
function initialize(address token, address vault, address owner) external nonReentrant {
require(!initialized, "FixedRate: already initialized");
initialized = true;
TOKEN = token;
VAULT = vault;
OWNER = owner;
}
function mint(
uint256 _id,
uint256 _principal,
uint256 _yield,
uint256 _maturityTimestamp
) external nonReentrant onlyVault {
require(IERC20(TOKEN).balanceOf(address(this)) >= _principal + _yield, "FixedRate: insufficient fund");
id = _id;
principal = _principal;
yield = _yield;
maturityTimestamp = _maturityTimestamp;
}
function burn(
uint256 amount
) external nonReentrant onlyOwner returns (uint256 yieldToUnlock, uint256 yieldToRelease) {
require(amount <= principal, "FixedRate: overspend");
(yieldToUnlock, yieldToRelease) = IVault(VAULT).burnFixedRate(id, amount);
uint256 yieldBurned = yieldToUnlock - yieldToRelease;
require(
IERC20(TOKEN).balanceOf(address(this)) >= principal + yield - yieldBurned,
"FixedRate: insufficient fund" // contract should now contain principal and remaining yield
);
principal -= amount;
yield -= yieldToUnlock; // arithmetic check guarantees yieldToUnlock <= yield
IERC20(TOKEN).safeTransfer(OWNER, amount + yieldToRelease);
}
function withdraw(uint256 amount) external nonReentrant onlyOwner onlyEmergency {
require(amount <= principal, "FixedRate: overspend");
principal -= amount;
IERC20(TOKEN).safeTransfer(OWNER, amount);
}
modifier onlyOwner() {
require(msg.sender == OWNER, "FixedRate: not owner");
_;
}
modifier onlyVault() {
require(msg.sender == VAULT, "FixedRate: not vault");
_;
}
modifier onlyEmergency() {
require(ICoreRef(VAULT).emergency(), "FixedRate: not emergency");
_;
}
}
// SPDX-License-Identifier: MIT
pragma solidity 0.8.23;
import {ReentrancyGuard} from "../lib/openzeppelin-contracts/contracts/security/ReentrancyGuard.sol";
import {IERC20} from "../lib/openzeppelin-contracts/contracts/interfaces/IERC20.sol";
import {SafeERC20} from "../lib/openzeppelin-contracts/contracts/token/ERC20/utils/SafeERC20.sol";
import {IVault} from "./interfaces/IVault.sol";
import {ICoreRef} from "./core/ICoreRef.sol";
contract VariableRate is ReentrancyGuard {
using SafeERC20 for IERC20;
/* Immutables */
// solhint-disable var-name-mixedcase
address public TOKEN;
address public VAULT;
address public OWNER;
/* Variables */
bool public initialized;
uint256 public principal;
function initialize(address token, address vault, address owner) external nonReentrant {
require(!initialized, "VariableRate: already initialized");
initialized = true;
TOKEN = token;
VAULT = vault;
OWNER = owner;
}
function mint(uint256 amount) external nonReentrant onlyVault {
require(IERC20(TOKEN).balanceOf(address(this)) >= principal + amount, "VariableRate: insufficient fund");
principal += amount;
}
function burn(
uint256 amount,
uint256 minYield
) external nonReentrant onlyOwner returns (uint256 yield, uint256 fee) {
require(amount <= principal, "VariableRate: overspend");
(yield, fee) = IVault(VAULT).burnVariableRate(amount, minYield);
require(IERC20(TOKEN).balanceOf(address(this)) >= principal + yield + fee, "VariableRate: insufficient fund");
principal -= amount;
IERC20(TOKEN).safeTransfer(OWNER, amount + yield + fee);
}
function withdraw(uint256 amount) external nonReentrant onlyOwner onlyEmergency {
require(amount <= principal, "VariableRate: overspend");
principal -= amount;
IERC20(TOKEN).safeTransfer(OWNER, amount);
}
modifier onlyOwner() {
require(msg.sender == OWNER, "VariableRate: not owner");
_;
}
modifier onlyVault() {
require(msg.sender == VAULT, "VariableRate: not vault");
_;
}
modifier onlyEmergency() {
require(ICoreRef(VAULT).emergency(), "VariableRate: not emergency");
_;
}
}
// SPDX-License-Identifier: MIT
pragma solidity 0.8.23;
import {ERC20} from "../../lib/openzeppelin-contracts/contracts/token/ERC20/ERC20.sol";
import {ERC20Burnable} from "../../lib/openzeppelin-contracts/contracts/token/ERC20/extensions/ERC20Burnable.sol";
import {CoreRef} from "../core/CoreRef.sol";
import {BlastManager} from "../libraries/BlastManager.sol";
import {IDuoAssetToken} from "../interfaces/IDuoAssetToken.sol";
contract DuoAssetToken is IDuoAssetToken, ERC20Burnable, CoreRef, BlastManager {
// solhint-disable-next-line var-name-mixedcase
bytes32 public DOMAIN_SEPARATOR;
// keccak256("Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)");
bytes32 public constant PERMIT_TYPEHASH = 0x6e71edae12b1b97f4d1f60370fef10105fa2faae0126114a169c64845d6126c9;
mapping(address => uint256) public nonces;
constructor(string memory name_, string memory symbol_, address core_) ERC20(name_, symbol_) CoreRef(core_) {
uint256 chainId;
// solhint-disable-next-line no-inline-assembly
assembly {
chainId := chainid()
}
DOMAIN_SEPARATOR = keccak256(
abi.encode(
keccak256("EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)"),
keccak256(bytes(name())),
keccak256(bytes("1")),
chainId,
address(this)
)
);
}
/**
* @notice mint new tokens
* @param account the address of the destination account
* @param amount the number of tokens to be minted
*/
function mint(address account, uint256 amount) external override onlyMinter {
_mint(account, amount);
emit Minting(account, msg.sender, amount);
}
/**
* @notice burn Duo asset tokens from caller
* @param amount the amount to burn
*/
function burn(uint256 amount) public override(IDuoAssetToken, ERC20Burnable) {
super.burn(amount);
emit Burning(msg.sender, msg.sender, amount);
}
/**
* @notice burn Duo asset tokens from specified account
* @param account the account to burn from
* @param amount the amount to burn
*/
function burnFrom(address account, uint256 amount) public override(IDuoAssetToken, ERC20Burnable) onlyBurner {
_burn(account, amount);
emit Burning(account, msg.sender, amount);
}
/**
* @notice triggers an approval from owner to spends
* @param owner the address to approve from
* @param spender the address to be approved
* @param value the number of tokens that are approved (2^256-1 means infinite)
* @param deadline the time at which to expire the signature
* @param v the recovery byte of the signature
* @param r half of the ECDSA signature pair
* @param s half of the ECDSA signature pair
*/
function permit(
address owner,
address spender,
uint256 value,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
) external override {
require(deadline >= block.timestamp, "Duo: EXPIRED");
bytes32 digest = keccak256(
abi.encodePacked(
"\x19\x01",
DOMAIN_SEPARATOR,
keccak256(abi.encode(PERMIT_TYPEHASH, owner, spender, value, nonces[owner]++, deadline))
)
);
address recoveredAddress = ecrecover(digest, v, r, s);
require(recoveredAddress != address(0) && recoveredAddress == owner, "Duo: INVALID_SIGNATURE");
_approve(owner, spender, value);
}
}
// SPDX-License-Identifier: MIT
pragma solidity 0.8.23;
import {ICore} from "../core/ICore.sol";
import {ICoreRef} from "./ICoreRef.sol";
/// @title A Reference to Core
/// @notice defines some modifiers and utilities around interacting with Core
abstract contract CoreRef is ICoreRef {
ICore private _core;
// solhint-disable-next-line var-name-mixedcase
bool public EMERGENCY;
/// @notice CoreRef constructor
/// @param coreAddress Few Core to reference
constructor(address coreAddress) {
_core = ICore(coreAddress);
}
modifier onlyMinter() {
require(_core.isMinter(msg.sender), "CoreRef: Caller is not a minter");
_;
}
modifier onlyBurner() {
require(_core.isBurner(msg.sender), "CoreRef: Caller is not a burner");
_;
}
modifier onlyGovernor() {
require(_core.isGovernor(msg.sender), "CoreRef: Caller is not a governor");
_;
}
modifier onlyGuardianOrGovernor() {
require(
_core.isGovernor(msg.sender) || _core.isGuardian(msg.sender),
"CoreRef: Caller is not a guardian or governor"
);
_;
}
/// @notice set new Core reference address
/// @param coreAddress the new core address
function setCore(address coreAddress) external override onlyGovernor {
_core = ICore(coreAddress);
emit CoreUpdate(coreAddress);
}
function emergency() external view override returns (bool) {
return EMERGENCY;
}
function startEmergency() external override onlyGuardianOrGovernor {
EMERGENCY = true;
emit EmergencyUpdate(true);
}
function stopEmergency() external override onlyGuardianOrGovernor {
EMERGENCY = false;
emit EmergencyUpdate(false);
}
/// @notice address of the Core contract referenced
/// @return ICore implementation address
function core() public view override returns (ICore) {
return _core;
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/Address.sol)
pragma solidity ^0.8.1;
/**
* @dev Collection of functions related to the address type
*/
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
*
* Furthermore, `isContract` will also return true if the target contract within
* the same transaction is already scheduled for destruction by `SELFDESTRUCT`,
* which only has an effect at the end of a transaction.
* ====
*
* [IMPORTANT]
* ====
* You shouldn't rely on `isContract` to protect against flash loan attacks!
*
* Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
* like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
* constructor.
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies on extcodesize/address.code.length, which returns 0
// for contracts in construction, since the code is only stored at the end
// of the constructor execution.
return account.code.length > 0;
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://consensys.net/diligence/blog/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/v0.8.0/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
(bool success, ) = recipient.call{value: amount}("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain `call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, "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");
(bool success, bytes memory returndata) = target.call{value: value}(data);
return verifyCallResultFromTarget(target, 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) {
(bool success, bytes memory returndata) = target.staticcall(data);
return verifyCallResultFromTarget(target, success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
return functionDelegateCall(target, data, "Address: low-level delegate call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
(bool success, bytes memory returndata) = target.delegatecall(data);
return verifyCallResultFromTarget(target, success, returndata, errorMessage);
}
/**
* @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling
* the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract.
*
* _Available since v4.8._
*/
function verifyCallResultFromTarget(
address target,
bool success,
bytes memory returndata,
string memory errorMessage
) internal view returns (bytes memory) {
if (success) {
if (returndata.length == 0) {
// only check isContract if the call was successful and the return data is empty
// otherwise we already know that it was a contract
require(isContract(target), "Address: call to non-contract");
}
return returndata;
} else {
_revert(returndata, errorMessage);
}
}
/**
* @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the
* revert reason or using the provided one.
*
* _Available since v4.3._
*/
function verifyCallResult(
bool success,
bytes memory returndata,
string memory errorMessage
) internal pure returns (bytes memory) {
if (success) {
return returndata;
} else {
_revert(returndata, errorMessage);
}
}
function _revert(bytes memory returndata, string memory errorMessage) private pure {
// 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
/// @solidity memory-safe-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/IERC20.sol)
pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `to`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address to, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `from` to `to` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(address from, address to, uint256 amount) external returns (bool);
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/extensions/IERC20Permit.sol)
pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in
* https://eips.ethereum.org/EIPS/eip-2612[EIP-2612].
*
* Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by
* presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't
* need to send a transaction, and thus is not required to hold Ether at all.
*/
interface IERC20Permit {
/**
* @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens,
* given ``owner``'s signed approval.
*
* IMPORTANT: The same issues {IERC20-approve} has related to transaction
* ordering also apply here.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `deadline` must be a timestamp in the future.
* - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner`
* over the EIP712-formatted function arguments.
* - the signature must use ``owner``'s current nonce (see {nonces}).
*
* For more information on the signature format, see the
* https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP
* section].
*/
function permit(
address owner,
address spender,
uint256 value,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
) external;
/**
* @dev Returns the current nonce for `owner`. This value must be
* included whenever a signature is generated for {permit}.
*
* Every successful call to {permit} increases ``owner``'s nonce by one. This
* prevents a signature from being used multiple times.
*/
function nonces(address owner) external view returns (uint256);
/**
* @dev Returns the domain separator used in the encoding of the signature for {permit}, as defined by {EIP712}.
*/
// solhint-disable-next-line func-name-mixedcase
function DOMAIN_SEPARATOR() external view returns (bytes32);
}
// SPDX-License-Identifier: MIT
pragma solidity 0.8.23;
enum YieldMode {
AUTOMATIC,
DISABLED,
CLAIMABLE
}
enum GasMode {
VOID,
CLAIMABLE
}
interface IBlast {
// configure
function configureContract(
address contractAddress,
YieldMode _yield,
GasMode gasMode,
address governor
) external;
function configure(
YieldMode _yield,
GasMode gasMode,
address governor
) external;
// base configuration options
function configureClaimableYield() external;
function configureClaimableYieldOnBehalf(address contractAddress) external;
function configureAutomaticYield() external;
function configureAutomaticYieldOnBehalf(address contractAddress) external;
function configureVoidYield() external;
function configureVoidYieldOnBehalf(address contractAddress) external;
function configureClaimableGas() external;
function configureClaimableGasOnBehalf(address contractAddress) external;
function configureVoidGas() external;
function configureVoidGasOnBehalf(address contractAddress) external;
function configureGovernor(address _governor) external;
function configureGovernorOnBehalf(
address _newGovernor,
address contractAddress
) external;
// claim yield
function claimYield(
address contractAddress,
address recipientOfYield,
uint256 amount
) external returns (uint256);
function claimAllYield(
address contractAddress,
address recipientOfYield
) external returns (uint256);
// claim gas
function claimAllGas(
address contractAddress,
address recipientOfGas
) external returns (uint256);
function claimGasAtMinClaimRate(
address contractAddress,
address recipientOfGas,
uint256 minClaimRateBips
) external returns (uint256);
function claimMaxGas(
address contractAddress,
address recipientOfGas
) external returns (uint256);
function claimGas(
address contractAddress,
address recipientOfGas,
uint256 gasToClaim,
uint256 gasSecondsToConsume
) external returns (uint256);
// read functions
function readClaimableYield(
address contractAddress
) external view returns (uint256);
function readYieldConfiguration(
address contractAddress
) external view returns (uint8);
function readGasParams(
address contractAddress
)
external
view
returns (
uint256 etherSeconds,
uint256 etherBalance,
uint256 lastUpdated,
GasMode
);
}
// SPDX-License-Identifier: MIT
pragma solidity 0.8.23;
interface IBlastPoints {
/**
* @notice Blast standard: configure for blast point operator address
* @param operator the blast points operator address
*/
function configurePointsOperator(address operator) external;
}
// SPDX-License-Identifier: MIT
pragma solidity 0.8.23;
import {ICore} from "../core/ICore.sol";
/// @title CoreRef interface
interface ICoreRef {
event CoreUpdate(address indexed _core);
event EmergencyUpdate(bool _emergency);
event MinterUpdate(address indexed _minter, bool _status);
event BurnerUpdate(address indexed _burner, bool _status);
function emergency() external view returns (bool);
function startEmergency() external;
function stopEmergency() external;
function setCore(address coreAddress) external;
function core() external view returns (ICore);
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/ERC20.sol)
pragma solidity ^0.8.0;
import "./IERC20.sol";
import "./extensions/IERC20Metadata.sol";
import "../../utils/Context.sol";
/**
* @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.openzeppelin.com/t/how-to-implement-erc20-supply-mechanisms/226[How
* to implement supply mechanisms].
*
* The default value of {decimals} is 18. To change this, you should override
* this function so it returns a different value.
*
* We have followed general OpenZeppelin Contracts guidelines: functions revert
* instead returning `false` on failure. This behavior is nonetheless
* conventional and does not conflict with the expectations of ERC20
* applications.
*
* Additionally, an {Approval} event is emitted on calls to {transferFrom}.
* This allows applications to reconstruct the allowance for all accounts just
* by listening to said events. Other implementations of the EIP may not emit
* these events, as it isn't required by the specification.
*
* Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
* functions have been added to mitigate the well-known issues around setting
* allowances. See {IERC20-approve}.
*/
contract ERC20 is Context, IERC20, IERC20Metadata {
mapping(address => uint256) private _balances;
mapping(address => mapping(address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
/**
* @dev Sets the values for {name} and {symbol}.
*
* All two of these values are immutable: they can only be set once during
* construction.
*/
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
}
/**
* @dev Returns the name of the token.
*/
function name() public view virtual override returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
/**
* @dev Returns the number of decimals used to get its user representation.
* For example, if `decimals` equals `2`, a balance of `505` tokens should
* be displayed to a user as `5.05` (`505 / 10 ** 2`).
*
* Tokens usually opt for a value of 18, imitating the relationship between
* Ether and Wei. This is the default value returned by this function, unless
* it's overridden.
*
* NOTE: This information is only used for _display_ purposes: it in
* no way affects any of the arithmetic of the contract, including
* {IERC20-balanceOf} and {IERC20-transfer}.
*/
function decimals() public view virtual override returns (uint8) {
return 18;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public view virtual override returns (uint256) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(address account) public view virtual override returns (uint256) {
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `to` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address to, uint256 amount) public virtual override returns (bool) {
address owner = _msgSender();
_transfer(owner, to, amount);
return true;
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on
* `transferFrom`. This is semantically equivalent to an infinite approval.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount) public virtual override returns (bool) {
address owner = _msgSender();
_approve(owner, spender, amount);
return true;
}
/**
* @dev See {IERC20-transferFrom}.
*
* Emits an {Approval} event indicating the updated allowance. This is not
* required by the EIP. See the note at the beginning of {ERC20}.
*
* NOTE: Does not update the allowance if the current allowance
* is the maximum `uint256`.
*
* Requirements:
*
* - `from` and `to` cannot be the zero address.
* - `from` must have a balance of at least `amount`.
* - the caller must have allowance for ``from``'s tokens of at least
* `amount`.
*/
function transferFrom(address from, address to, uint256 amount) public virtual override returns (bool) {
address spender = _msgSender();
_spendAllowance(from, spender, amount);
_transfer(from, to, amount);
return true;
}
/**
* @dev Atomically increases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
address owner = _msgSender();
_approve(owner, spender, allowance(owner, spender) + addedValue);
return true;
}
/**
* @dev Atomically decreases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `spender` must have allowance for the caller of at least
* `subtractedValue`.
*/
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
address owner = _msgSender();
uint256 currentAllowance = allowance(owner, spender);
require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
unchecked {
_approve(owner, spender, currentAllowance - subtractedValue);
}
return true;
}
/**
* @dev Moves `amount` of tokens from `from` to `to`.
*
* This internal function is equivalent to {transfer}, and can be used to
* e.g. implement automatic token fees, slashing mechanisms, etc.
*
* Emits a {Transfer} event.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `from` must have a balance of at least `amount`.
*/
function _transfer(address from, address to, uint256 amount) internal virtual {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(from, to, amount);
uint256 fromBalance = _balances[from];
require(fromBalance >= amount, "ERC20: transfer amount exceeds balance");
unchecked {
_balances[from] = fromBalance - amount;
// Overflow not possible: the sum of all balances is capped by totalSupply, and the sum is preserved by
// decrementing then incrementing.
_balances[to] += amount;
}
emit Transfer(from, to, amount);
_afterTokenTransfer(from, to, amount);
}
/** @dev Creates `amount` tokens and assigns them to `account`, increasing
* the total supply.
*
* Emits a {Transfer} event with `from` set to the zero address.
*
* Requirements:
*
* - `account` cannot be the zero address.
*/
function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(0), account, amount);
_totalSupply += amount;
unchecked {
// Overflow not possible: balance + amount is at most totalSupply + amount, which is checked above.
_balances[account] += amount;
}
emit Transfer(address(0), account, amount);
_afterTokenTransfer(address(0), account, amount);
}
/**
* @dev Destroys `amount` tokens from `account`, reducing the
* total supply.
*
* Emits a {Transfer} event with `to` set to the zero address.
*
* Requirements:
*
* - `account` cannot be the zero address.
* - `account` must have at least `amount` tokens.
*/
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
_beforeTokenTransfer(account, address(0), amount);
uint256 accountBalance = _balances[account];
require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
unchecked {
_balances[account] = accountBalance - amount;
// Overflow not possible: amount <= accountBalance <= totalSupply.
_totalSupply -= amount;
}
emit Transfer(account, address(0), amount);
_afterTokenTransfer(account, address(0), amount);
}
/**
* @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
*
* This internal function is equivalent to `approve`, and can be used to
* e.g. set automatic allowances for certain subsystems, etc.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `owner` cannot be the zero address.
* - `spender` cannot be the zero address.
*/
function _approve(address owner, address spender, uint256 amount) internal virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
/**
* @dev Updates `owner` s allowance for `spender` based on spent `amount`.
*
* Does not update the allowance amount in case of infinite allowance.
* Revert if not enough allowance is available.
*
* Might emit an {Approval} event.
*/
function _spendAllowance(address owner, address spender, uint256 amount) internal virtual {
uint256 currentAllowance = allowance(owner, spender);
if (currentAllowance != type(uint256).max) {
require(currentAllowance >= amount, "ERC20: insufficient allowance");
unchecked {
_approve(owner, spender, currentAllowance - amount);
}
}
}
/**
* @dev Hook that is called before any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* will be transferred to `to`.
* - when `from` is zero, `amount` tokens will be minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual {}
/**
* @dev Hook that is called after any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* has been transferred to `to`.
* - when `from` is zero, `amount` tokens have been minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens have been burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _afterTokenTransfer(address from, address to, uint256 amount) internal virtual {}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (token/ERC20/extensions/ERC20Burnable.sol)
pragma solidity ^0.8.0;
import "../ERC20.sol";
import "../../../utils/Context.sol";
/**
* @dev Extension of {ERC20} that allows token holders to destroy both their own
* tokens and those that they have an allowance for, in a way that can be
* recognized off-chain (via event analysis).
*/
abstract contract ERC20Burnable is Context, ERC20 {
/**
* @dev Destroys `amount` tokens from the caller.
*
* See {ERC20-_burn}.
*/
function burn(uint256 amount) public virtual {
_burn(_msgSender(), amount);
}
/**
* @dev Destroys `amount` tokens from `account`, deducting from the caller's
* allowance.
*
* See {ERC20-_burn} and {ERC20-allowance}.
*
* Requirements:
*
* - the caller must have allowance for ``accounts``'s tokens of at least
* `amount`.
*/
function burnFrom(address account, uint256 amount) public virtual {
_spendAllowance(account, _msgSender(), amount);
_burn(account, amount);
}
}
// SPDX-License-Identifier: MIT
pragma solidity 0.8.23;
import {IERC20} from "../../lib/openzeppelin-contracts/contracts/token/ERC20/IERC20.sol";
interface IDuoAssetToken is IERC20 {
event Minting(address indexed _to, address indexed _minter, uint256 _amount);
event Burning(address indexed _to, address indexed _burner, uint256 _amount);
function burn(uint256 amount) external;
function permit(
address owner,
address spender,
uint256 value,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
) external;
function burnFrom(address account, uint256 amount) external;
function mint(address account, uint256 amount) external;
}
// SPDX-License-Identifier: MIT
pragma solidity 0.8.23;
import {IPermissions} from "./IPermissions.sol";
/// @title Core Interface
interface ICore is IPermissions {
function init() external;
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)
pragma solidity ^0.8.0;
import "../IERC20.sol";
/**
* @dev Interface for the optional metadata functions from the ERC20 standard.
*
* _Available since v4.1._
*/
interface IERC20Metadata is IERC20 {
/**
* @dev Returns the name of the token.
*/
function name() external view returns (string memory);
/**
* @dev Returns the symbol of the token.
*/
function symbol() external view returns (string memory);
/**
* @dev Returns the decimals places of the token.
*/
function decimals() external view returns (uint8);
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)
pragma solidity ^0.8.0;
/**
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
return msg.data;
}
}
// SPDX-License-Identifier: MIT
pragma solidity 0.8.23;
/// @title Permissions interface
interface IPermissions {
// ----------- Governor only state changing api -----------
function createRole(bytes32 role, bytes32 adminRole) external;
function grantGovernor(address governor) external;
function grantGuardian(address guardian) external;
function grantMinter(address minter) external;
function grantBurner(address burner) external;
function revokeGovernor(address governor) external;
function revokeGuardian(address guardian) external;
function revokeMinter(address minter) external;
function revokeBurner(address burner) external;
// ----------- Revoker only state changing api -----------
function revokeOverride(bytes32 role, address account) external;
// ----------- Getters -----------
function isGovernor(address _address) external view returns (bool);
function isGuardian(address _address) external view returns (bool);
function isMinter(address _address) external view returns (bool);
function isBurner(address _address) external view returns (bool);
}