116 lines
3.7 KiB
Solidity
116 lines
3.7 KiB
Solidity
// SPDX-License-Identifier: MIT
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pragma solidity 0.7.6;
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pragma abicoder v2;
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import { Ownable } from "@openzeppelin/contracts/access/Ownable.sol";
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import { Address } from "@openzeppelin/contracts/utils/Address.sol";
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import "@openzeppelin/contracts/proxy/Clones.sol";
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import "./ERC20TornadoCloneable.sol";
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import "./AddInstanceProposal.sol";
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import "./interfaces/IGovernance.sol";
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contract InstanceFactory is Ownable {
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using Clones for address;
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using Address for address;
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address public immutable governance;
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address public immutable instanceRegistry;
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address public implementation;
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address public verifier;
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address public hasher;
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uint32 public merkleTreeHeight;
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event NewVerifierSet(address indexed newVerifier);
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event NewHasherSet(address indexed newHasher);
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event NewTreeHeightSet(uint32 indexed newTreeHeight);
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event NewImplementationSet(address indexed newImplemenentation);
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event NewInstanceCloneCreated(address indexed clone);
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event NewGovernanceProposalCreated(address indexed proposal);
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constructor(
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address _verifier,
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address _hasher,
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uint32 _merkleTreeHeight,
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address _governance,
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address _instanceRegistry
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) {
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verifier = _verifier;
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hasher = _hasher;
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merkleTreeHeight = _merkleTreeHeight;
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governance = _governance;
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instanceRegistry = _instanceRegistry;
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ERC20TornadoCloneable implContract = new ERC20TornadoCloneable(_verifier, _hasher);
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implementation = address(implContract);
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transferOwnership(_governance);
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}
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function createInstanceClone(uint256 _denomination, address _token) external onlyOwner returns (address) {
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bytes32 salt = keccak256(abi.encodePacked(_denomination, _token));
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require(!implementation.predictDeterministicAddress(salt).isContract(), "Instance already exists");
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address newClone = implementation.cloneDeterministic(salt);
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emit NewInstanceCloneCreated(newClone);
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ERC20TornadoCloneable(newClone).init(_denomination, merkleTreeHeight, _token);
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return newClone;
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}
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function getInstanceAddress(uint256 _denomination, address _token) public view returns (address) {
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bytes32 salt = keccak256(abi.encodePacked(_denomination, _token));
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return implementation.predictDeterministicAddress(salt);
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}
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function createNewProposal(
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address _token,
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uint24 _uniswapPoolSwappingFee,
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uint256[] memory _denominations,
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uint32[] memory _protocolFees
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) external returns (address) {
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require(_token.isContract(), "Token is not contract"); // TODO should we check that such instance already exist?
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require(_uniswapPoolSwappingFee > 0, "uniswapPoolSwappingFee is zero"); // TODO should we check > 0 ?
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require(_denominations.length > 0, "Empty denominations");
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require(_denominations.length == _protocolFees.length, "Incorrect denominations/fees length");
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address proposal = address(new AddInstanceProposal(
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address(this),
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instanceRegistry,
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_token,
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_uniswapPoolSwappingFee,
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_denominations,
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_protocolFees
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));
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emit NewGovernanceProposalCreated(proposal);
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return proposal;
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}
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function setVerifier(address _verifier) external onlyOwner {
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verifier = _verifier;
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emit NewVerifierSet(verifier);
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}
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function setHasher(address _hasher) external onlyOwner {
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hasher = _hasher;
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emit NewHasherSet(hasher);
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}
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function setMerkleTreeHeight(uint32 _merkleTreeHeight) external onlyOwner {
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merkleTreeHeight = _merkleTreeHeight;
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emit NewTreeHeightSet(merkleTreeHeight);
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}
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function setImplementation(address _newImplementation) external onlyOwner {
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implementation = _newImplementation;
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emit NewImplementationSet(implementation);
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}
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function generateNewImplementation() external onlyOwner {
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implementation = address(new ERC20TornadoCloneable(verifier, hasher));
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}
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}
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