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add erc4626 connector

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q1q0 2023-02-17 11:55:24 -05:00
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28
contracts/mainnet/connectors/basic-ERC4626/IERC20Metadata.sol Normal file
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// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)
pragma solidity ^0.7.0;
import { IERC20 } from "@openzeppelin/contracts/token/ERC20/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);
}

232
contracts/mainnet/connectors/basic-ERC4626/IERC4626.sol Normal file
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// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (interfaces/IERC4626.sol)
pragma solidity ^0.7.0;
import { IERC20 } from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "./IERC20Metadata.sol";
/**
* @dev Interface of the ERC4626 "Tokenized Vault Standard", as defined in
* https://eips.ethereum.org/EIPS/eip-4626[ERC-4626].
*
* _Available since v4.7._
*/
interface IERC4626 is IERC20, IERC20Metadata {
event Deposit(address indexed sender, address indexed owner, uint256 assets, uint256 shares);
event Withdraw(
address indexed sender,
address indexed receiver,
address indexed owner,
uint256 assets,
uint256 shares
);
/**
* @dev Returns the address of the underlying token used for the Vault for accounting, depositing, and withdrawing.
*
* - MUST be an ERC-20 token contract.
* - MUST NOT revert.
*/
function asset() external view returns (address assetTokenAddress);
/**
* @dev Returns the total amount of the underlying asset that is “managed” by Vault.
*
* - SHOULD include any compounding that occurs from yield.
* - MUST be inclusive of any fees that are charged against assets in the Vault.
* - MUST NOT revert.
*/
function totalAssets() external view returns (uint256 totalManagedAssets);
/**
* @dev Returns the amount of shares that the Vault would exchange for the amount of assets provided, in an ideal
* scenario where all the conditions are met.
*
* - MUST NOT be inclusive of any fees that are charged against assets in the Vault.
* - MUST NOT show any variations depending on the caller.
* - MUST NOT reflect slippage or other on-chain conditions, when performing the actual exchange.
* - MUST NOT revert.
*
* NOTE: This calculation MAY NOT reflect the “per-user” price-per-share, and instead should reflect the
* “average-user’s” price-per-share, meaning what the average user should expect to see when exchanging to and
* from.
*/
function convertToShares(uint256 assets) external view returns (uint256 shares);
/**
* @dev Returns the amount of assets that the Vault would exchange for the amount of shares provided, in an ideal
* scenario where all the conditions are met.
*
* - MUST NOT be inclusive of any fees that are charged against assets in the Vault.
* - MUST NOT show any variations depending on the caller.
* - MUST NOT reflect slippage or other on-chain conditions, when performing the actual exchange.
* - MUST NOT revert.
*
* NOTE: This calculation MAY NOT reflect the “per-user” price-per-share, and instead should reflect the
* “average-user’s” price-per-share, meaning what the average user should expect to see when exchanging to and
* from.
*/
function convertToAssets(uint256 shares) external view returns (uint256 assets);
/**
* @dev Returns the maximum amount of the underlying asset that can be deposited into the Vault for the receiver,
* through a deposit call.
*
* - MUST return a limited value if receiver is subject to some deposit limit.
* - MUST return 2 ** 256 - 1 if there is no limit on the maximum amount of assets that may be deposited.
* - MUST NOT revert.
*/
function maxDeposit(address receiver) external view returns (uint256 maxAssets);
/**
* @dev Allows an on-chain or off-chain user to simulate the effects of their deposit at the current block, given
* current on-chain conditions.
*
* - MUST return as close to and no more than the exact amount of Vault shares that would be minted in a deposit
* call in the same transaction. I.e. deposit should return the same or more shares as previewDeposit if called
* in the same transaction.
* - MUST NOT account for deposit limits like those returned from maxDeposit and should always act as though the
* deposit would be accepted, regardless if the user has enough tokens approved, etc.
* - MUST be inclusive of deposit fees. Integrators should be aware of the existence of deposit fees.
* - MUST NOT revert.
*
* NOTE: any unfavorable discrepancy between convertToShares and previewDeposit SHOULD be considered slippage in
* share price or some other type of condition, meaning the depositor will lose assets by depositing.
*/
function previewDeposit(uint256 assets) external view returns (uint256 shares);
/**
* @dev Mints shares Vault shares to receiver by depositing exactly amount of underlying tokens.
*
* - MUST emit the Deposit event.
* - MAY support an additional flow in which the underlying tokens are owned by the Vault contract before the
* deposit execution, and are accounted for during deposit.
* - MUST revert if all of assets cannot be deposited (due to deposit limit being reached, slippage, the user not
* approving enough underlying tokens to the Vault contract, etc).
*
* NOTE: most implementations will require pre-approval of the Vault with the Vault’s underlying asset token.
*/
function deposit(uint256 assets, address receiver) external returns (uint256 shares);
/**
* @dev Returns the maximum amount of the Vault shares that can be minted for the receiver, through a mint call.
* - MUST return a limited value if receiver is subject to some mint limit.
* - MUST return 2 ** 256 - 1 if there is no limit on the maximum amount of shares that may be minted.
* - MUST NOT revert.
*/
function maxMint(address receiver) external view returns (uint256 maxShares);
/**
* @dev Allows an on-chain or off-chain user to simulate the effects of their mint at the current block, given
* current on-chain conditions.
*
* - MUST return as close to and no fewer than the exact amount of assets that would be deposited in a mint call
* in the same transaction. I.e. mint should return the same or fewer assets as previewMint if called in the
* same transaction.
* - MUST NOT account for mint limits like those returned from maxMint and should always act as though the mint
* would be accepted, regardless if the user has enough tokens approved, etc.
* - MUST be inclusive of deposit fees. Integrators should be aware of the existence of deposit fees.
* - MUST NOT revert.
*
* NOTE: any unfavorable discrepancy between convertToAssets and previewMint SHOULD be considered slippage in
* share price or some other type of condition, meaning the depositor will lose assets by minting.
*/
function previewMint(uint256 shares) external view returns (uint256 assets);
/**
* @dev Mints exactly shares Vault shares to receiver by depositing amount of underlying tokens.
*
* - MUST emit the Deposit event.
* - MAY support an additional flow in which the underlying tokens are owned by the Vault contract before the mint
* execution, and are accounted for during mint.
* - MUST revert if all of shares cannot be minted (due to deposit limit being reached, slippage, the user not
* approving enough underlying tokens to the Vault contract, etc).
*
* NOTE: most implementations will require pre-approval of the Vault with the Vault’s underlying asset token.
*/
function mint(uint256 shares, address receiver) external returns (uint256 assets);
/**
* @dev Returns the maximum amount of the underlying asset that can be withdrawn from the owner balance in the
* Vault, through a withdraw call.
*
* - MUST return a limited value if owner is subject to some withdrawal limit or timelock.
* - MUST NOT revert.
*/
function maxWithdraw(address owner) external view returns (uint256 maxAssets);
/**
* @dev Allows an on-chain or off-chain user to simulate the effects of their withdrawal at the current block,
* given current on-chain conditions.
*
* - MUST return as close to and no fewer than the exact amount of Vault shares that would be burned in a withdraw
* call in the same transaction. I.e. withdraw should return the same or fewer shares as previewWithdraw if
* called
* in the same transaction.
* - MUST NOT account for withdrawal limits like those returned from maxWithdraw and should always act as though
* the withdrawal would be accepted, regardless if the user has enough shares, etc.
* - MUST be inclusive of withdrawal fees. Integrators should be aware of the existence of withdrawal fees.
* - MUST NOT revert.
*
* NOTE: any unfavorable discrepancy between convertToShares and previewWithdraw SHOULD be considered slippage in
* share price or some other type of condition, meaning the depositor will lose assets by depositing.
*/
function previewWithdraw(uint256 assets) external view returns (uint256 shares);
/**
* @dev Burns shares from owner and sends exactly assets of underlying tokens to receiver.
*
* - MUST emit the Withdraw event.
* - MAY support an additional flow in which the underlying tokens are owned by the Vault contract before the
* withdraw execution, and are accounted for during withdraw.
* - MUST revert if all of assets cannot be withdrawn (due to withdrawal limit being reached, slippage, the owner
* not having enough shares, etc).
*
* Note that some implementations will require pre-requesting to the Vault before a withdrawal may be performed.
* Those methods should be performed separately.
*/
function withdraw(uint256 assets, address receiver, address owner) external returns (uint256 shares);
/**
* @dev Returns the maximum amount of Vault shares that can be redeemed from the owner balance in the Vault,
* through a redeem call.
*
* - MUST return a limited value if owner is subject to some withdrawal limit or timelock.
* - MUST return balanceOf(owner) if owner is not subject to any withdrawal limit or timelock.
* - MUST NOT revert.
*/
function maxRedeem(address owner) external view returns (uint256 maxShares);
/**
* @dev Allows an on-chain or off-chain user to simulate the effects of their redeemption at the current block,
* given current on-chain conditions.
*
* - MUST return as close to and no more than the exact amount of assets that would be withdrawn in a redeem call
* in the same transaction. I.e. redeem should return the same or more assets as previewRedeem if called in the
* same transaction.
* - MUST NOT account for redemption limits like those returned from maxRedeem and should always act as though the
* redemption would be accepted, regardless if the user has enough shares, etc.
* - MUST be inclusive of withdrawal fees. Integrators should be aware of the existence of withdrawal fees.
* - MUST NOT revert.
*
* NOTE: any unfavorable discrepancy between convertToAssets and previewRedeem SHOULD be considered slippage in
* share price or some other type of condition, meaning the depositor will lose assets by redeeming.
*/
function previewRedeem(uint256 shares) external view returns (uint256 assets);
/**
* @dev Burns exactly shares from owner and sends assets of underlying tokens to receiver.
*
* - MUST emit the Withdraw event.
* - MAY support an additional flow in which the underlying tokens are owned by the Vault contract before the
* redeem execution, and are accounted for during redeem.
* - MUST revert if all of shares cannot be redeemed (due to withdrawal limit being reached, slippage, the owner
* not having enough shares, etc).
*
* NOTE: some implementations will require pre-requesting to the Vault before a withdrawal may be performed.
* Those methods should be performed separately.
*/
function redeem(uint256 shares, address receiver, address owner) external returns (uint256 assets);
}

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contracts/mainnet/connectors/basic-ERC4626/events.sol Normal file
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//SPDX-License-Identifier: MIT
pragma solidity ^0.7.0;
contract Events {
event LogWithdraw(
address indexed erc20,
uint256 tokenAmt,
address indexed to,
uint256 getId,
uint256 setId
);
event LogRedeem(
address indexed erc20,
uint256 tokenAmt,
address indexed to,
uint256 getId,
uint256 setId
);
event LogDeposit(
address indexed erc20,
uint256 tokenAmt,
address indexed receiver,
address indexed owner,
uint256 getId,
uint256 setId
);
event LogMint(
address indexed erc20,
uint256 tokenAmt,
address indexed receiver,
address indexed owner,
uint256 getId,
uint256 setId
);
}

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contracts/mainnet/connectors/basic-ERC4626/main.sol Normal file
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//SPDX-License-Identifier: MIT
pragma solidity ^0.7.0;
/**
* @title Basic.
* @dev Deposit & Withdraw from DSA.
*/
import { SafeERC20 } from "@openzeppelin/contracts/token/ERC20/SafeERC20.sol";
import { IERC4626 } from "./IERC4626.sol";
import { DSMath } from "../../common/math.sol";
import { Basic } from "../../common/basic.sol";
import { Events } from "./events.sol";
abstract contract BasicResolver is Events, DSMath, Basic {
using SafeERC20 for IERC4626;
/**
* @dev Deposit Assets To Smart Account From any user.
* @notice Deposit a token to DSA from any user.
* @param token The address of the token to deposit.
* @param amt The amount of tokens to deposit. (For max: `uint256(-1)`)
* @param from The address depositing the token.
* @param getId ID to retrieve amt.
* @param setId ID stores the amount of tokens deposited.
*/
function deposit(
address token,
uint256 amt,
address from,
uint256 getId,
uint256 setId
)
public
payable
returns (string memory _eventName, bytes memory _eventParam)
{
uint _amt = getUint(getId, amt);
IERC4626 tokenContract = IERC4626(token);
_amt = _amt == uint(-1) ? tokenContract.balanceOf(from) : _amt;
uint _shares = tokenContract.deposit(_amt, from);
setUint(setId, _shares);
_eventName = "LogDeposit(address,uint256,address,uint256,uint256)";
_eventParam = abi.encode(token, _amt, from, getId, setId);
}
function mint(
address token,
uint256 amt,
address from,
uint256 getId,
uint256 setId
)
public
payable
returns (string memory _eventName, bytes memory _eventParam)
{
uint _amt = getUint(getId, amt);
IERC4626 tokenContract = IERC4626(token);
_amt = _amt == uint(-1) ? tokenContract.balanceOf(from) : _amt;
uint _shares = tokenContract.mint(_amt, from);
setUint(setId, _shares);
_eventName = "LogMint(address,uint256,address,uint256,uint256)";
_eventParam = abi.encode(token, _amt, from, getId, setId);
}
/**
* @dev Withdraw Assets from Smart Account
* @notice Withdraw a token from DSA
* @param token The address of the token to withdraw.
* @param amt The amount of tokens to withdraw. (For max: `uint256(-1)`)
* @param receiver The address to receive the token upon withdrawal
* @param getId ID to retrieve amt.
* @param setId ID stores the amount of tokens withdrawn.
*/
function withdraw(
address token,
uint amt,
address receiver,
address owner,
uint getId,
uint setId
)
public
payable
returns (string memory _eventName, bytes memory _eventParam)
{
uint _amt = getUint(getId, amt);
IERC4626 tokenContract = IERC4626(token);
_amt = _amt == uint(-1)
? tokenContract.balanceOf(address(this))
: _amt;
uint _shares = tokenContract.withdraw(_amt, receiver, owner);
setUint(setId, _shares);
_eventName = "LogWithdraw(address,uint256,address,address,uint256,uint256)";
_eventParam = abi.encode(token, _amt, receiver, owner, getId, setId);
}
function redeem(
address token,
uint amt,
address receiver,
address owner,
uint getId,
uint setId
)
public
payable
returns (string memory _eventName, bytes memory _eventParam)
{
uint _amt = getUint(getId, amt);
IERC4626 tokenContract = IERC4626(token);
_amt = _amt == uint(-1)
? tokenContract.balanceOf(address(this))
: _amt;
uint _shares = tokenContract.redeem(_amt, receiver, owner);
setUint(setId, _shares);
_eventName = "LogRedeem(address,uint256,address,address,uint256,uint256)";
_eventParam = abi.encode(token, _amt, receiver, owner, getId, setId);
}
}
contract ConnectV2Basic is BasicResolver {
string public constant name = "BASIC-ERC4626-A";
}

2
package-lock.json generated
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"version": "1.0.0", "version": "1.0.0",
"license": "ISC", "license": "ISC",
"dependencies": { "dependencies": {
"@openzeppelin/contracts": "^3.4.0-solc-0.7", "@openzeppelin/contracts": "^3.4.2",
"@typechain/ethers-v5": "^8.0.5", "@typechain/ethers-v5": "^8.0.5",
"@typechain/hardhat": "^3.0.0", "@typechain/hardhat": "^3.0.0",
"@uniswap/sdk-core": "^3.0.1", "@uniswap/sdk-core": "^3.0.1",