Contract Name:
BErc20Delegator
Contract Source Code:
pragma solidity 0.5.16;
import "./BTokenInterfaces.sol";
/**
* @title Blueberry's BErc20Delegator Contract
* @notice BTokens which wrap an EIP-20 underlying and delegate to an implementation
* @author Blueberry
*/
contract BErc20Delegator is
BTokenInterface,
BErc20Interface,
BDelegatorInterface
{
/**
* @notice Construct a new money market
* @param underlying_ The address of the underlying asset
* @param comptroller_ The address of the Comptroller
* @param interestRateModel_ The address of the interest rate model
* @param initialExchangeRateMantissa_ The initial exchange rate, scaled by 1e18
* @param name_ ERC-20 name of this token
* @param symbol_ ERC-20 symbol of this token
* @param decimals_ ERC-20 decimal precision of this token
* @param admin_ Address of the administrator of this token
* @param implementation_ The address of the implementation the contract delegates to
* @param becomeImplementationData The encoded args for becomeImplementation
*/
constructor(
address underlying_,
ComptrollerInterface comptroller_,
InterestRateModel interestRateModel_,
uint256 initialExchangeRateMantissa_,
string memory name_,
string memory symbol_,
uint8 decimals_,
address payable admin_,
address implementation_,
bytes memory becomeImplementationData
) public {
// Creator of the contract is admin during initialization
admin = msg.sender;
// First delegate gets to initialize the delegator (i.e. storage contract)
delegateTo(
implementation_,
abi.encodeWithSignature(
"initialize(address,address,address,uint256,string,string,uint8)",
underlying_,
comptroller_,
interestRateModel_,
initialExchangeRateMantissa_,
name_,
symbol_,
decimals_
)
);
// New implementations always get set via the setter (post-initialize)
_setImplementation(implementation_, false, becomeImplementationData);
// Set the proper admin now that initialization is done
admin = admin_;
}
/**
* @notice Called by the admin to update the implementation of the delegator
* @param implementation_ The address of the new implementation for delegation
* @param allowResign Flag to indicate whether to call _resignImplementation on the old implementation
* @param becomeImplementationData The encoded bytes data to be passed to _becomeImplementation
*/
function _setImplementation(
address implementation_,
bool allowResign,
bytes memory becomeImplementationData
) public {
require(
msg.sender == admin,
"BErc20Delegator::_setImplementation: Caller must be admin"
);
if (allowResign) {
delegateToImplementation(
abi.encodeWithSignature("_resignImplementation()")
);
}
address oldImplementation = implementation;
implementation = implementation_;
delegateToImplementation(
abi.encodeWithSignature(
"_becomeImplementation(bytes)",
becomeImplementationData
)
);
emit NewImplementation(oldImplementation, implementation);
}
/**
* @notice Sender supplies assets into the market and receives bTokens in exchange
* @dev Accrues interest whether or not the operation succeeds, unless reverted
* @param mintAmount The amount of the underlying asset to supply
* @return uint 0=success, otherwise a failure (see ErrorReporter.sol for details)
*/
function mint(uint256 mintAmount) external returns (uint256) {
mintAmount; // Shh
delegateAndReturn();
}
/**
* @notice Sender redeems bTokens in exchange for the underlying asset
* @dev Accrues interest whether or not the operation succeeds, unless reverted
* @param redeemTokens The number of bTokens to redeem into underlying
* @return uint 0=success, otherwise a failure (see ErrorReporter.sol for details)
*/
function redeem(uint256 redeemTokens) external returns (uint256) {
redeemTokens; // Shh
delegateAndReturn();
}
/**
* @notice Sender redeems bTokens in exchange for a specified amount of underlying asset
* @dev Accrues interest whether or not the operation succeeds, unless reverted
* @param redeemAmount The amount of underlying to redeem
* @return uint 0=success, otherwise a failure (see ErrorReporter.sol for details)
*/
function redeemUnderlying(uint256 redeemAmount) external returns (uint256) {
redeemAmount; // Shh
delegateAndReturn();
}
/**
* @notice Sender borrows assets from the protocol to their own address
* @param borrowAmount The amount of the underlying asset to borrow
* @return uint 0=success, otherwise a failure (see ErrorReporter.sol for details)
*/
function borrow(uint256 borrowAmount) external returns (uint256) {
borrowAmount; // Shh
delegateAndReturn();
}
/**
* @notice Sender repays their own borrow
* @param repayAmount The amount to repay
* @return uint 0=success, otherwise a failure (see ErrorReporter.sol for details)
*/
function repayBorrow(uint256 repayAmount) external returns (uint256) {
repayAmount; // Shh
delegateAndReturn();
}
/**
* @notice Sender repays a borrow belonging to borrower
* @param borrower the account with the debt being payed off
* @param repayAmount The amount to repay
* @return uint 0=success, otherwise a failure (see ErrorReporter.sol for details)
*/
function repayBorrowBehalf(address borrower, uint256 repayAmount)
external
returns (uint256)
{
borrower;
repayAmount; // Shh
delegateAndReturn();
}
/**
* @notice The sender liquidates the borrowers collateral.
* The collateral seized is transferred to the liquidator.
* @param borrower The borrower of this bToken to be liquidated
* @param bTokenCollateral The market in which to seize collateral from the borrower
* @param repayAmount The amount of the underlying borrowed asset to repay
* @return uint 0=success, otherwise a failure (see ErrorReporter.sol for details)
*/
function liquidateBorrow(
address borrower,
uint256 repayAmount,
BTokenInterface bTokenCollateral
) external returns (uint256) {
borrower;
repayAmount;
bTokenCollateral; // Shh
delegateAndReturn();
}
/**
* @notice Transfer `amount` tokens from `msg.sender` to `dst`
* @param dst The address of the destination account
* @param amount The number of tokens to transfer
* @return Whether or not the transfer succeeded
*/
function transfer(address dst, uint256 amount) external returns (bool) {
dst;
amount; // Shh
delegateAndReturn();
}
/**
* @notice Transfer `amount` tokens from `src` to `dst`
* @param src The address of the source account
* @param dst The address of the destination account
* @param amount The number of tokens to transfer
* @return Whether or not the transfer succeeded
*/
function transferFrom(
address src,
address dst,
uint256 amount
) external returns (bool) {
src;
dst;
amount; // Shh
delegateAndReturn();
}
/**
* @notice Approve `spender` to transfer up to `amount` from `src`
* @dev This will overwrite the approval amount for `spender`
* and is subject to issues noted [here](https://eips.ethereum.org/EIPS/eip-20#approve)
* @param spender The address of the account which may transfer tokens
* @param amount The number of tokens that are approved (-1 means infinite)
* @return Whether or not the approval succeeded
*/
function approve(address spender, uint256 amount) external returns (bool) {
spender;
amount; // Shh
delegateAndReturn();
}
/**
* @notice Get the current allowance from `owner` for `spender`
* @param owner The address of the account which owns the tokens to be spent
* @param spender The address of the account which may transfer tokens
* @return The number of tokens allowed to be spent (-1 means infinite)
*/
function allowance(address owner, address spender)
external
view
returns (uint256)
{
owner;
spender; // Shh
delegateToViewAndReturn();
}
/**
* @notice Get the token balance of the `owner`
* @param owner The address of the account to query
* @return The number of tokens owned by `owner`
*/
function balanceOf(address owner) external view returns (uint256) {
owner; // Shh
delegateToViewAndReturn();
}
/**
* @notice Get the underlying balance of the `owner`
* @dev This also accrues interest in a transaction
* @param owner The address of the account to query
* @return The amount of underlying owned by `owner`
*/
function balanceOfUnderlying(address owner) external returns (uint256) {
owner; // Shh
delegateAndReturn();
}
/**
* @notice Get a snapshot of the account's balances, and the cached exchange rate
* @dev This is used by comptroller to more efficiently perform liquidity checks.
* @param account Address of the account to snapshot
* @return (possible error, token balance, borrow balance, exchange rate mantissa)
*/
function getAccountSnapshot(address account)
external
view
returns (
uint256,
uint256,
uint256,
uint256
)
{
account; // Shh
delegateToViewAndReturn();
}
/**
* @notice Returns the current per-second borrow interest rate for this bToken
* @return The borrow interest rate per second, scaled by 1e18
*/
function borrowRatePerSecond() external view returns (uint256) {
delegateToViewAndReturn();
}
/**
* @notice Returns the current per-second supply interest rate for this bToken
* @return The supply interest rate per second, scaled by 1e18
*/
function supplyRatePerSecond() external view returns (uint256) {
delegateToViewAndReturn();
}
/**
* @notice Returns the current total borrows plus accrued interest
* @return The total borrows with interest
*/
function totalBorrowsCurrent() external returns (uint256) {
delegateAndReturn();
}
/**
* @notice Accrue interest to updated borrowIndex and then calculate account's borrow balance using the updated borrowIndex
* @param account The address whose balance should be calculated after updating borrowIndex
* @return The calculated balance
*/
function borrowBalanceCurrent(address account) external returns (uint256) {
account; // Shh
delegateAndReturn();
}
/**
* @notice Return the borrow balance of account based on stored data
* @param account The address whose balance should be calculated
* @return The calculated balance
*/
function borrowBalanceStored(address account)
public
view
returns (uint256)
{
account; // Shh
delegateToViewAndReturn();
}
/**
* @notice Accrue interest then return the up-to-date exchange rate
* @return Calculated exchange rate scaled by 1e18
*/
function exchangeRateCurrent() public returns (uint256) {
delegateAndReturn();
}
/**
* @notice Calculates the exchange rate from the underlying to the BToken
* @dev This function does not accrue interest before calculating the exchange rate
* @return Calculated exchange rate scaled by 1e18
*/
function exchangeRateStored() public view returns (uint256) {
delegateToViewAndReturn();
}
/**
* @notice Get cash balance of this bToken in the underlying asset
* @return The quantity of underlying asset owned by this contract
*/
function getCash() external view returns (uint256) {
delegateToViewAndReturn();
}
/**
* @notice Applies accrued interest to total borrows and reserves.
* @dev This calculates interest accrued from the last checkpointed second
* up to the current second and writes new checkpoint to storage.
*/
function accrueInterest() public returns (uint256) {
delegateAndReturn();
}
/**
* @notice Transfers collateral tokens (this market) to the liquidator.
* @dev Will fail unless called by another bToken during the process of liquidation.
* Its absolutely critical to use msg.sender as the borrowed bToken and not a parameter.
* @param liquidator The account receiving seized collateral
* @param borrower The account having collateral seized
* @param seizeTokens The number of bTokens to seize
* @return uint 0=success, otherwise a failure (see ErrorReporter.sol for details)
*/
function seize(
address liquidator,
address borrower,
uint256 seizeTokens
) external returns (uint256) {
liquidator;
borrower;
seizeTokens; // Shh
delegateAndReturn();
}
/*** Admin Functions ***/
/**
* @notice Begins transfer of admin rights. The newPendingAdmin must call `_acceptAdmin` to finalize the transfer.
* @dev Admin function to begin change of admin. The newPendingAdmin must call `_acceptAdmin` to finalize the transfer.
* @param newPendingAdmin New pending admin.
* @return uint 0=success, otherwise a failure (see ErrorReporter.sol for details)
*/
function _setPendingAdmin(address payable newPendingAdmin)
external
returns (uint256)
{
newPendingAdmin; // Shh
delegateAndReturn();
}
/**
* @notice Sets a new comptroller for the market
* @dev Admin function to set a new comptroller
* @return uint 0=success, otherwise a failure (see ErrorReporter.sol for details)
*/
function _setComptroller(ComptrollerInterface newComptroller)
public
returns (uint256)
{
newComptroller; // Shh
delegateAndReturn();
}
/**
* @notice accrues interest and sets a new reserve factor for the protocol using _setReserveFactorFresh
* @dev Admin function to accrue interest and set a new reserve factor
* @return uint 0=success, otherwise a failure (see ErrorReporter.sol for details)
*/
function _setReserveFactor(uint256 newReserveFactorMantissa)
external
returns (uint256)
{
newReserveFactorMantissa; // Shh
delegateAndReturn();
}
/**
* @notice Accepts transfer of admin rights. msg.sender must be pendingAdmin
* @dev Admin function for pending admin to accept role and update admin
* @return uint 0=success, otherwise a failure (see ErrorReporter.sol for details)
*/
function _acceptAdmin() external returns (uint256) {
delegateAndReturn();
}
/**
* @notice Accrues interest and adds reserves by transferring from admin
* @param addAmount Amount of reserves to add
* @return uint 0=success, otherwise a failure (see ErrorReporter.sol for details)
*/
function _addReserves(uint256 addAmount) external returns (uint256) {
addAmount; // Shh
delegateAndReturn();
}
/**
* @notice Accrues interest and reduces reserves by transferring to admin
* @param reduceAmount Amount of reduction to reserves
* @return uint 0=success, otherwise a failure (see ErrorReporter.sol for details)
*/
function _reduceReserves(uint256 reduceAmount) external returns (uint256) {
reduceAmount; // Shh
delegateAndReturn();
}
/**
* @notice Accrues interest and updates the interest rate model using _setInterestRateModelFresh
* @dev Admin function to accrue interest and update the interest rate model
* @param newInterestRateModel the new interest rate model to use
* @return uint 0=success, otherwise a failure (see ErrorReporter.sol for details)
*/
function _setInterestRateModel(InterestRateModel newInterestRateModel)
public
returns (uint256)
{
newInterestRateModel; // Shh
delegateAndReturn();
}
/**
* @notice Internal method to delegate execution to another contract
* @dev It returns to the external caller whatever the implementation returns or forwards reverts
* @param callee The contract to delegatecall
* @param data The raw data to delegatecall
* @return The returned bytes from the delegatecall
*/
function delegateTo(address callee, bytes memory data)
internal
returns (bytes memory)
{
(bool success, bytes memory returnData) = callee.delegatecall(data);
assembly {
if eq(success, 0) {
revert(add(returnData, 0x20), returndatasize)
}
}
return returnData;
}
/**
* @notice Delegates execution to the implementation contract
* @dev It returns to the external caller whatever the implementation returns or forwards reverts
* @param data The raw data to delegatecall
* @return The returned bytes from the delegatecall
*/
function delegateToImplementation(bytes memory data)
public
returns (bytes memory)
{
return delegateTo(implementation, data);
}
/**
* @notice Delegates execution to an implementation contract
* @dev It returns to the external caller whatever the implementation returns or forwards reverts
* There are an additional 2 prefix uints from the wrapper returndata, which we ignore since we make an extra hop.
* @param data The raw data to delegatecall
* @return The returned bytes from the delegatecall
*/
function delegateToViewImplementation(bytes memory data)
public
view
returns (bytes memory)
{
(bool success, bytes memory returnData) = address(this).staticcall(
abi.encodeWithSignature("delegateToImplementation(bytes)", data)
);
assembly {
if eq(success, 0) {
revert(add(returnData, 0x20), returndatasize)
}
}
return abi.decode(returnData, (bytes));
}
function delegateToViewAndReturn() private view returns (bytes memory) {
(bool success, ) = address(this).staticcall(
abi.encodeWithSignature("delegateToImplementation(bytes)", msg.data)
);
assembly {
let free_mem_ptr := mload(0x40)
returndatacopy(free_mem_ptr, 0, returndatasize)
switch success
case 0 {
revert(free_mem_ptr, returndatasize)
}
default {
return(add(free_mem_ptr, 0x40), returndatasize)
}
}
}
function delegateAndReturn() private returns (bytes memory) {
(bool success, ) = implementation.delegatecall(msg.data);
assembly {
let free_mem_ptr := mload(0x40)
returndatacopy(free_mem_ptr, 0, returndatasize)
switch success
case 0 {
revert(free_mem_ptr, returndatasize)
}
default {
return(free_mem_ptr, returndatasize)
}
}
}
/**
* @notice Delegates execution to an implementation contract
* @dev It returns to the external caller whatever the implementation returns or forwards reverts
*/
function() external payable {
require(
msg.value == 0,
"BErc20Delegator:fallback: cannot send value to fallback"
);
// delegate all other functions to current implementation
delegateAndReturn();
}
}
pragma solidity 0.5.16;
import "./ComptrollerInterface.sol";
import "./InterestRateModel.sol";
import "./ERC3156FlashBorrowerInterface.sol";
contract BTokenStorage {
/**
* @dev Guard variable for re-entrancy checks
*/
bool internal _notEntered;
/**
* @notice EIP-20 token name for this token
*/
string public name;
/**
* @notice EIP-20 token symbol for this token
*/
string public symbol;
/**
* @notice EIP-20 token decimals for this token
*/
uint8 public decimals;
/**
* @notice Maximum borrow rate that can ever be applied (.0005% / block)
*/
uint256 internal constant borrowRateMaxMantissa = 0.0005e16;
/**
* @notice Maximum fraction of interest that can be set aside for reserves
*/
uint256 internal constant reserveFactorMaxMantissa = 1e18;
/**
* @notice Administrator for this contract
*/
address payable public admin;
/**
* @notice Pending administrator for this contract
*/
address payable public pendingAdmin;
/**
* @notice Contract which oversees inter-bToken operations
*/
ComptrollerInterface public comptroller;
/**
* @notice Model which tells what the current interest rate should be
*/
InterestRateModel public interestRateModel;
/**
* @notice Initial exchange rate used when minting the first BTokens (used when totalSupply = 0)
*/
uint256 internal initialExchangeRateMantissa;
/**
* @notice Fraction of interest currently set aside for reserves
*/
uint256 public reserveFactorMantissa;
/**
* @notice Block timestamp that interest was last accrued at
*/
uint256 public accrualBlockTimestamp;
/**
* @notice Accumulator of the total earned interest rate since the opening of the market
*/
uint256 public borrowIndex;
/**
* @notice Total amount of outstanding borrows of the underlying in this market
*/
uint256 public totalBorrows;
/**
* @notice Total amount of reserves of the underlying held in this market
*/
uint256 public totalReserves;
/**
* @notice Total number of tokens in circulation
*/
uint256 public totalSupply;
/**
* @notice Official record of token balances for each account
*/
mapping(address => uint256) internal accountTokens;
/**
* @notice Approved token transfer amounts on behalf of others
*/
mapping(address => mapping(address => uint256)) internal transferAllowances;
/**
* @notice Container for borrow balance information
* @member principal Total balance (with accrued interest), after applying the most recent balance-changing action
* @member interestIndex Global borrowIndex as of the most recent balance-changing action
*/
struct BorrowSnapshot {
uint256 principal;
uint256 interestIndex;
}
/**
* @notice Mapping of account addresses to outstanding borrow balances
*/
mapping(address => BorrowSnapshot) internal accountBorrows;
}
contract BErc20Storage {
/**
* @notice Underlying asset for this BToken
*/
address public underlying;
/**
* @notice Implementation address for this contract
*/
address public implementation;
}
contract BSupplyCapStorage {
/**
* @notice Internal cash counter for this BToken. Should equal underlying.balanceOf(address(this)) for BERC20.
*/
uint256 public internalCash;
}
contract BCollateralCapStorage {
/**
* @notice Total number of tokens used as collateral in circulation.
*/
uint256 public totalCollateralTokens;
/**
* @notice Record of token balances which could be treated as collateral for each account.
* If collateral cap is not set, the value should be equal to accountTokens.
*/
mapping(address => uint256) public accountCollateralTokens;
/**
* @notice Check if accountCollateralTokens have been initialized.
*/
mapping(address => bool) public isCollateralTokenInit;
/**
* @notice Collateral cap for this BToken, zero for no cap.
*/
uint256 public collateralCap;
}
/*** Interface ***/
contract BTokenInterface is BTokenStorage {
/**
* @notice Indicator that this is a BToken contract (for inspection)
*/
bool public constant isBToken = true;
/*** Market Events ***/
/**
* @notice Event emitted when interest is accrued
*/
event AccrueInterest(
uint256 cashPrior,
uint256 interestAccumulated,
uint256 borrowIndex,
uint256 totalBorrows
);
/**
* @notice Event emitted when tokens are minted
*/
event Mint(address minter, uint256 mintAmount, uint256 mintTokens);
/**
* @notice Event emitted when tokens are redeemed
*/
event Redeem(address redeemer, uint256 redeemAmount, uint256 redeemTokens);
/**
* @notice Event emitted when underlying is borrowed
*/
event Borrow(
address borrower,
uint256 borrowAmount,
uint256 accountBorrows,
uint256 totalBorrows
);
/**
* @notice Event emitted when a borrow is repaid
*/
event RepayBorrow(
address payer,
address borrower,
uint256 repayAmount,
uint256 accountBorrows,
uint256 totalBorrows
);
/**
* @notice Event emitted when a borrow is liquidated
*/
event LiquidateBorrow(
address liquidator,
address borrower,
uint256 repayAmount,
address bTokenCollateral,
uint256 seizeTokens
);
/*** Admin Events ***/
/**
* @notice Event emitted when pendingAdmin is changed
*/
event NewPendingAdmin(address oldPendingAdmin, address newPendingAdmin);
/**
* @notice Event emitted when pendingAdmin is accepted, which means admin is updated
*/
event NewAdmin(address oldAdmin, address newAdmin);
/**
* @notice Event emitted when comptroller is changed
*/
event NewComptroller(
ComptrollerInterface oldComptroller,
ComptrollerInterface newComptroller
);
/**
* @notice Event emitted when interestRateModel is changed
*/
event NewMarketInterestRateModel(
InterestRateModel oldInterestRateModel,
InterestRateModel newInterestRateModel
);
/**
* @notice Event emitted when the reserve factor is changed
*/
event NewReserveFactor(
uint256 oldReserveFactorMantissa,
uint256 newReserveFactorMantissa
);
/**
* @notice Event emitted when the reserves are added
*/
event ReservesAdded(
address benefactor,
uint256 addAmount,
uint256 newTotalReserves
);
/**
* @notice Event emitted when the reserves are reduced
*/
event ReservesReduced(
address admin,
uint256 reduceAmount,
uint256 newTotalReserves
);
/**
* @notice EIP20 Transfer event
*/
event Transfer(address indexed from, address indexed to, uint256 amount);
/**
* @notice EIP20 Approval event
*/
event Approval(
address indexed owner,
address indexed spender,
uint256 amount
);
/**
* @notice Failure event
*/
event Failure(uint256 error, uint256 info, uint256 detail);
/*** User Interface ***/
function transfer(address dst, uint256 amount) external returns (bool);
function transferFrom(
address src,
address dst,
uint256 amount
) external returns (bool);
function approve(address spender, uint256 amount) external returns (bool);
function allowance(address owner, address spender)
external
view
returns (uint256);
function balanceOf(address owner) external view returns (uint256);
function balanceOfUnderlying(address owner) external returns (uint256);
function getAccountSnapshot(address account)
external
view
returns (
uint256,
uint256,
uint256,
uint256
);
function borrowRatePerSecond() external view returns (uint256);
function supplyRatePerSecond() external view returns (uint256);
function totalBorrowsCurrent() external returns (uint256);
function borrowBalanceCurrent(address account) external returns (uint256);
function borrowBalanceStored(address account) public view returns (uint256);
function exchangeRateCurrent() public returns (uint256);
function exchangeRateStored() public view returns (uint256);
function getCash() external view returns (uint256);
function accrueInterest() public returns (uint256);
function seize(
address liquidator,
address borrower,
uint256 seizeTokens
) external returns (uint256);
/*** Admin Functions ***/
function _setPendingAdmin(address payable newPendingAdmin)
external
returns (uint256);
function _acceptAdmin() external returns (uint256);
function _setComptroller(ComptrollerInterface newComptroller)
public
returns (uint256);
function _setReserveFactor(uint256 newReserveFactorMantissa)
external
returns (uint256);
function _reduceReserves(uint256 reduceAmount) external returns (uint256);
function _setInterestRateModel(InterestRateModel newInterestRateModel)
public
returns (uint256);
}
contract BErc20Interface is BErc20Storage {
/*** User Interface ***/
function mint(uint256 mintAmount) external returns (uint256);
function redeem(uint256 redeemTokens) external returns (uint256);
function redeemUnderlying(uint256 redeemAmount) external returns (uint256);
function borrow(uint256 borrowAmount) external returns (uint256);
function repayBorrow(uint256 repayAmount) external returns (uint256);
function repayBorrowBehalf(address borrower, uint256 repayAmount)
external
returns (uint256);
function liquidateBorrow(
address borrower,
uint256 repayAmount,
BTokenInterface bTokenCollateral
) external returns (uint256);
function _addReserves(uint256 addAmount) external returns (uint256);
}
contract BWrappedNativeInterface is BErc20Interface {
/**
* @notice Flash loan fee ratio
*/
uint256 public constant flashFeeBips = 1;
/*** Market Events ***/
/**
* @notice Event emitted when a flashloan occurred
*/
event Flashloan(
address indexed receiver,
uint256 amount,
uint256 totalFee,
uint256 reservesFee
);
/*** User Interface ***/
function mintNative() external payable returns (uint256);
function redeemNative(uint256 redeemTokens) external returns (uint256);
function redeemUnderlyingNative(uint256 redeemAmount)
external
returns (uint256);
function borrowNative(uint256 borrowAmount) external returns (uint256);
function repayBorrowNative() external payable returns (uint256);
function repayBorrowBehalfNative(address borrower)
external
payable
returns (uint256);
function liquidateBorrowNative(
address borrower,
BTokenInterface bTokenCollateral
) external payable returns (uint256);
function flashLoan(
ERC3156FlashBorrowerInterface receiver,
address initiator,
uint256 amount,
bytes calldata data
) external returns (bool);
function _addReservesNative() external payable returns (uint256);
function collateralCap() external view returns (uint256);
function totalCollateralTokens() external view returns (uint256);
}
contract BCapableErc20Interface is BErc20Interface, BSupplyCapStorage {
/**
* @notice Flash loan fee ratio
*/
uint256 public constant flashFeeBips = 1;
/*** Market Events ***/
/**
* @notice Event emitted when a flashloan occurred
*/
event Flashloan(
address indexed receiver,
uint256 amount,
uint256 totalFee,
uint256 reservesFee
);
/*** User Interface ***/
function gulp() external;
}
contract BCollateralCapErc20Interface is
BCapableErc20Interface,
BCollateralCapStorage
{
/*** Admin Events ***/
/**
* @notice Event emitted when collateral cap is set
*/
event NewCollateralCap(address token, uint256 newCap);
/**
* @notice Event emitted when user collateral is changed
*/
event UserCollateralChanged(address account, uint256 newCollateralTokens);
/*** User Interface ***/
function registerCollateral(address account) external returns (uint256);
function unregisterCollateral(address account) external;
function flashLoan(
ERC3156FlashBorrowerInterface receiver,
address initiator,
uint256 amount,
bytes calldata data
) external returns (bool);
/*** Admin Functions ***/
function _setCollateralCap(uint256 newCollateralCap) external;
}
contract BDelegatorInterface {
/**
* @notice Emitted when implementation is changed
*/
event NewImplementation(
address oldImplementation,
address newImplementation
);
/**
* @notice Called by the admin to update the implementation of the delegator
* @param implementation_ The address of the new implementation for delegation
* @param allowResign Flag to indicate whether to call _resignImplementation on the old implementation
* @param becomeImplementationData The encoded bytes data to be passed to _becomeImplementation
*/
function _setImplementation(
address implementation_,
bool allowResign,
bytes memory becomeImplementationData
) public;
}
contract BDelegateInterface {
/**
* @notice Called by the delegator on a delegate to initialize it for duty
* @dev Should revert if any issues arise which make it unfit for delegation
* @param data The encoded bytes data for any initialization
*/
function _becomeImplementation(bytes memory data) public;
/**
* @notice Called by the delegator on a delegate to forfeit its responsibility
*/
function _resignImplementation() public;
}
/*** External interface ***/
/**
* @title Flash loan receiver interface
*/
interface IFlashloanReceiver {
function executeOperation(
address sender,
address underlying,
uint256 amount,
uint256 fee,
bytes calldata params
) external;
}
pragma solidity 0.5.16;
contract ComptrollerInterface {
/// @notice Indicator that this is a Comptroller contract (for inspection)
bool public constant isComptroller = true;
/*** Assets You Are In ***/
function enterMarkets(address[] calldata bTokens)
external
returns (uint256[] memory);
function exitMarket(address bToken) external returns (uint256);
/*** Policy Hooks ***/
function mintAllowed(
address bToken,
address minter,
uint256 mintAmount
) external returns (uint256);
function mintVerify(
address bToken,
address minter,
uint256 mintAmount,
uint256 mintTokens
) external;
function redeemAllowed(
address bToken,
address redeemer,
uint256 redeemTokens
) external returns (uint256);
function redeemVerify(
address bToken,
address redeemer,
uint256 redeemAmount,
uint256 redeemTokens
) external;
function borrowAllowed(
address bToken,
address borrower,
uint256 borrowAmount
) external returns (uint256);
function borrowVerify(
address bToken,
address borrower,
uint256 borrowAmount
) external;
function repayBorrowAllowed(
address bToken,
address payer,
address borrower,
uint256 repayAmount
) external returns (uint256);
function repayBorrowVerify(
address bToken,
address payer,
address borrower,
uint256 repayAmount,
uint256 borrowerIndex
) external;
function liquidateBorrowAllowed(
address bTokenBorrowed,
address bTokenCollateral,
address liquidator,
address borrower,
uint256 repayAmount
) external returns (uint256);
function liquidateBorrowVerify(
address bTokenBorrowed,
address bTokenCollateral,
address liquidator,
address borrower,
uint256 repayAmount,
uint256 seizeTokens
) external;
function seizeAllowed(
address bTokenCollateral,
address bTokenBorrowed,
address liquidator,
address borrower,
uint256 seizeTokens
) external returns (uint256);
function seizeVerify(
address bTokenCollateral,
address bTokenBorrowed,
address liquidator,
address borrower,
uint256 seizeTokens
) external;
function transferAllowed(
address bToken,
address src,
address dst,
uint256 transferTokens
) external returns (uint256);
function transferVerify(
address bToken,
address src,
address dst,
uint256 transferTokens
) external;
/*** Liquidity/Liquidation Calculations ***/
function liquidateCalculateSeizeTokens(
address bTokenBorrowed,
address bTokenCollateral,
uint256 repayAmount
) external view returns (uint256, uint256);
}
pragma solidity 0.5.16;
/**
* @title Blueberry's InterestRateModel Interface
* @author Compound (Modified by Blueberry)
*/
contract InterestRateModel {
/// @notice Indicator that this is an InterestRateModel contract (for inspection)
bool public constant isInterestRateModel = true;
/**
* @notice Calculates the current borrow interest rate per second
* @param cash The total amount of cash the market has
* @param borrows The total amount of borrows the market has outstanding
* @param reserves The total amount of reserves the market has
* @return The borrow rate per second (as a percentage, and scaled by 1e18)
*/
function getBorrowRate(
uint256 cash,
uint256 borrows,
uint256 reserves
) external view returns (uint256);
/**
* @notice Calculates the current supply interest rate per second
* @param cash The total amount of cash the market has
* @param borrows The total amount of borrows the market has outstanding
* @param reserves The total amount of reserves the market has
* @param reserveFactorMantissa The current reserve factor the market has
* @return The supply rate per second (as a percentage, and scaled by 1e18)
*/
function getSupplyRate(
uint256 cash,
uint256 borrows,
uint256 reserves,
uint256 reserveFactorMantissa
) external view returns (uint256);
}
pragma solidity 0.5.16;
interface ERC3156FlashBorrowerInterface {
/**
* @dev Receive a flash loan.
* @param initiator The initiator of the loan.
* @param token The loan currency.
* @param amount The amount of tokens lent.
* @param fee The additional amount of tokens to repay.
* @param data Arbitrary data structure, intended to contain user-defined parameters.
* @return The keccak256 hash of "ERC3156FlashBorrower.onFlashLoan"
*/
function onFlashLoan(
address initiator,
address token,
uint256 amount,
uint256 fee,
bytes calldata data
) external returns (bytes32);
}