77 lines
2.8 KiB
Solidity
77 lines
2.8 KiB
Solidity
|
// SPDX-License-Identifier: MIT
|
||
|
|
|
||
|
|
pragma solidity 0.7.6;
|
||
|
|
pragma abicoder v2;
|
||
|
|
|
||
|
|
import { Address } from "@openzeppelin/contracts/utils/Address.sol";
|
||
|
|
import { Initializable } from "@openzeppelin/contracts/proxy/Initializable.sol";
|
||
|
|
import "@openzeppelin/contracts/proxy/Clones.sol";
|
||
|
|
import "./instances/ERC20TornadoCloneable.sol";
|
||
|
|
import "./instances/ETHTornadoCloneable.sol";
|
||
|
|
|
||
|
|
contract MinimalInstanceFactory {
|
||
|
|
using Clones for address;
|
||
|
|
using Address for address;
|
||
|
|
|
||
|
|
address public immutable ERC20Impl;
|
||
|
|
address public immutable nativeCurImpl;
|
||
|
|
address public immutable verifier;
|
||
|
|
address public immutable hasher;
|
||
|
|
uint32 public immutable merkleTreeHeight;
|
||
|
|
|
||
|
|
event NewTreeHeightSet(uint32 indexed newTreeHeight);
|
||
|
|
event NewImplementationSet(address indexed ERC20Impl, address indexed nativeCurImpl, address verifier, address hasher);
|
||
|
|
event NewInstanceCloneCreated(address indexed clone);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @notice This instance factory is NOT permissioned. It is designed to always be able to print
|
||
|
|
* new Tornado Instances if necessary.
|
||
|
|
* @dev Creates new Tornado instance.
|
||
|
|
*/
|
||
|
|
constructor(address _verifier, address _hasher, uint32 _merkleTreeHeight) public {
|
||
|
|
verifier = _verifier;
|
||
|
|
hasher = _hasher;
|
||
|
|
merkleTreeHeight = _merkleTreeHeight;
|
||
|
|
|
||
|
|
ERC20TornadoCloneable ERC20ImplContract = new ERC20TornadoCloneable(_verifier, _hasher);
|
||
|
|
ERC20Impl = address(ERC20ImplContract);
|
||
|
|
ETHTornadoCloneable nativeCurImplContract = new ETHTornadoCloneable(_verifier, _hasher);
|
||
|
|
nativeCurImpl = address(nativeCurImplContract);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @notice Creates new Tornado instance.
|
||
|
|
* @param _denomination denomination of new Tornado instance
|
||
|
|
* @param _token address of ERC20 token for a new instance, if zero address, then it will be ETH
|
||
|
|
*/
|
||
|
|
function createInstanceClone(uint256 _denomination, address _token) public virtual returns (address clone) {
|
||
|
|
bytes32 salt = keccak256(abi.encodePacked(_denomination, _token));
|
||
|
|
|
||
|
|
if (_token == address(0)) {
|
||
|
|
clone = nativeCurImpl.predictDeterministicAddress(salt);
|
||
|
|
if (!clone.isContract()) {
|
||
|
|
nativeCurImpl.cloneDeterministic(salt);
|
||
|
|
emit NewInstanceCloneCreated(clone);
|
||
|
|
ETHTornadoCloneable(clone).init(_denomination, merkleTreeHeight);
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
clone = ERC20Impl.predictDeterministicAddress(salt);
|
||
|
|
if (!clone.isContract()) {
|
||
|
|
ERC20Impl.cloneDeterministic(salt);
|
||
|
|
emit NewInstanceCloneCreated(clone);
|
||
|
|
ERC20TornadoCloneable(clone).init(_denomination, merkleTreeHeight, _token);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return clone;
|
||
|
|
}
|
||
|
|
|
||
|
|
function getInstanceAddress(uint256 _denomination, address _token) public view returns (address) {
|
||
|
|
bytes32 salt = keccak256(abi.encodePacked(_denomination, _token));
|
||
|
|
if (_token == address(0)) {
|
||
|
|
return nativeCurImpl.predictDeterministicAddress(salt);
|
||
|
|
} else {
|
||
|
|
return ERC20Impl.predictDeterministicAddress(salt);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|