// Verified using https://dapp.tools
// hevm: flattened sources of lib/radicle-drips-hub/src/DaiReserve.sol
// SPDX-License-Identifier: MIT AND GPL-3.0-only
pragma solidity >=0.8.0 <0.9.0 >=0.8.7 <0.9.0;
////// lib/openzeppelin-contracts/contracts/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;
}
}
////// lib/openzeppelin-contracts/contracts/access/Ownable.sol
/* pragma solidity ^0.8.0; */
/* import "../utils/Context.sol"; */
/**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* By default, the owner account will be the one that deploys the contract. This
* can later be changed with {transferOwnership}.
*
* This module is used through inheritance. It will make available the modifier
* `onlyOwner`, which can be applied to your functions to restrict their use to
* the owner.
*/
abstract contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor() {
_transferOwnership(_msgSender());
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view virtual returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(owner() == _msgSender(), "Ownable: caller is not the owner");
_;
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
_transferOwnership(address(0));
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
_transferOwnership(newOwner);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Internal function without access restriction.
*/
function _transferOwnership(address newOwner) internal virtual {
address oldOwner = _owner;
_owner = newOwner;
emit OwnershipTransferred(oldOwner, newOwner);
}
}
////// lib/openzeppelin-contracts/contracts/token/ERC20/IERC20.sol
/* pragma solidity ^0.8.0; */
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(
address sender,
address recipient,
uint256 amount
) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
}
////// lib/radicle-drips-hub/src/Dai.sol
/* pragma solidity ^0.8.7; */
/* import {IERC20} from "openzeppelin-contracts/token/ERC20/IERC20.sol"; */
interface IDai is IERC20 {
function permit(
address holder,
address spender,
uint256 nonce,
uint256 expiry,
bool allowed,
uint8 v,
bytes32 r,
bytes32 s
) external;
}
////// lib/radicle-drips-hub/src/ERC20Reserve.sol
/* pragma solidity ^0.8.7; */
/* import {Ownable} from "openzeppelin-contracts/access/Ownable.sol"; */
/* import {IERC20} from "openzeppelin-contracts/token/ERC20/IERC20.sol"; */
interface IERC20Reserve {
function erc20() external view returns (IERC20);
function withdraw(uint256 amt) external;
function deposit(uint256 amt) external;
}
contract ERC20Reserve is IERC20Reserve, Ownable {
IERC20 public immutable override erc20;
address public user;
uint256 public balance;
event Withdrawn(address to, uint256 amt);
event Deposited(address from, uint256 amt);
event ForceWithdrawn(address to, uint256 amt);
event UserSet(address oldUser, address newUser);
constructor(
IERC20 _erc20,
address owner,
address _user
) {
erc20 = _erc20;
setUser(_user);
transferOwnership(owner);
}
modifier onlyUser() {
require(_msgSender() == user, "Reserve: caller is not the user");
_;
}
function withdraw(uint256 amt) public override onlyUser {
require(balance >= amt, "Reserve: withdrawal over balance");
balance -= amt;
emit Withdrawn(_msgSender(), amt);
require(erc20.transfer(_msgSender(), amt), "Reserve: transfer failed");
}
function deposit(uint256 amt) public override onlyUser {
balance += amt;
emit Deposited(_msgSender(), amt);
require(erc20.transferFrom(_msgSender(), address(this), amt), "Reserve: transfer failed");
}
function forceWithdraw(uint256 amt) public onlyOwner {
emit ForceWithdrawn(_msgSender(), amt);
require(erc20.transfer(_msgSender(), amt), "Reserve: transfer failed");
}
function setUser(address newUser) public onlyOwner {
emit UserSet(user, newUser);
user = newUser;
}
}
////// lib/radicle-drips-hub/src/DaiReserve.sol
/* pragma solidity ^0.8.7; */
/* import {ERC20Reserve, IERC20Reserve} from "./ERC20Reserve.sol"; */
/* import {IDai} from "./Dai.sol"; */
interface IDaiReserve is IERC20Reserve {
function dai() external view returns (IDai);
}
contract DaiReserve is ERC20Reserve, IDaiReserve {
IDai public immutable override dai;
constructor(
IDai _dai,
address owner,
address user
) ERC20Reserve(_dai, owner, user) {
dai = _dai;
}
}
{
"compilationTarget": {
"DaiReserve.sol": "DaiReserve"
},
"evmVersion": "london",
"libraries": {},
"metadata": {
"bytecodeHash": "ipfs"
},
"optimizer": {
"enabled": true,
"runs": 10000
},
"remappings": []
}
[{"inputs":[{"internalType":"contract IDai","name":"_dai","type":"address"},{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"user","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"from","type":"address"},{"indexed":false,"internalType":"uint256","name":"amt","type":"uint256"}],"name":"Deposited","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"uint256","name":"amt","type":"uint256"}],"name":"ForceWithdrawn","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"oldUser","type":"address"},{"indexed":false,"internalType":"address","name":"newUser","type":"address"}],"name":"UserSet","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"uint256","name":"amt","type":"uint256"}],"name":"Withdrawn","type":"event"},{"inputs":[],"name":"balance","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"dai","outputs":[{"internalType":"contract IDai","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"amt","type":"uint256"}],"name":"deposit","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"erc20","outputs":[{"internalType":"contract IERC20","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"amt","type":"uint256"}],"name":"forceWithdraw","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newUser","type":"address"}],"name":"setUser","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"user","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"amt","type":"uint256"}],"name":"withdraw","outputs":[],"stateMutability":"nonpayable","type":"function"}]