-
Notifications
You must be signed in to change notification settings - Fork 157
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Merge branch 'feat/subgraph-pr' into feat/subgraph
- Loading branch information
Showing
10 changed files
with
713 additions
and
4 deletions.
There are no files selected for viewing
87 changes: 87 additions & 0 deletions
87
contracts/contracts/gatekeepers/zupass/ZupassGatekeeper.sol
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,87 @@ | ||
| // SPDX-License-Identifier: MIT | ||
| pragma solidity ^0.8.20; | ||
|
|
||
| import { Ownable } from "@openzeppelin/contracts/access/Ownable.sol"; | ||
|
|
||
| import { SignUpGatekeeper } from "../SignUpGatekeeper.sol"; | ||
|
|
||
| import { ZupassGroth16Verifier } from "./ZupassGroth16Verifier.sol"; | ||
|
|
||
| /// @title ZupassGatekeeper | ||
| /// @notice This contract allows to gatekeep MACI signups | ||
| /// by requiring new voters to own a certain Zupass event ticket | ||
| contract ZupassGatekeeper is SignUpGatekeeper, Ownable(msg.sender) { | ||
| /// @notice the Zupass event UUID converted to bigint | ||
| uint256 public immutable validEventId; | ||
|
|
||
| /// @notice the Zupass event signer converted to bigint | ||
| uint256 public immutable validSigner1; | ||
| uint256 public immutable validSigner2; | ||
|
|
||
| /// @notice the ZupassGroth16Verifier contract address | ||
| ZupassGroth16Verifier public immutable verifier; | ||
|
|
||
| /// @notice the reference to the MACI contract | ||
| address public maci; | ||
|
|
||
| /// @notice a mapping of ticket IDs to whether they have been used | ||
| mapping(uint256 => bool) public registeredTickets; | ||
|
|
||
| /// @notice custom errors | ||
| error AlreadyRegistered(); | ||
| error InvalidProof(); | ||
| error InvalidEventId(); | ||
| error InvalidSigners(); | ||
| error InvalidWatermark(); | ||
| error OnlyMACI(); | ||
| error ZeroAddress(); | ||
|
|
||
| /// @notice Creates a new ZupassGatekeeper | ||
| /// @param _validEventId Zupass event UUID converted to bigint | ||
| /// @param _validSigner1 Zupass event signer[0] converted to bigint | ||
| /// @param _validSigner2 Zupass event signer[1] converted to bigint | ||
| /// @param _verifier The ZupassGroth16Verifier contract address | ||
| constructor(uint256 _validEventId, uint256 _validSigner1, uint256 _validSigner2, address _verifier) payable { | ||
| validEventId = _validEventId; | ||
| validSigner1 = _validSigner1; | ||
| validSigner2 = _validSigner2; | ||
| verifier = ZupassGroth16Verifier(_verifier); | ||
| } | ||
|
|
||
| /// @notice Adds an uninitialised MACI instance to allow for token signups | ||
| /// @param _maci The MACI contract interface to be stored | ||
| function setMaciInstance(address _maci) public override onlyOwner { | ||
| if (_maci == address(0)) revert ZeroAddress(); | ||
| maci = _maci; | ||
| } | ||
|
|
||
| /// @notice Registers the user only if they have the Zupass event ticket | ||
| /// @param _user The user's Ethereum address. | ||
| /// @param _data The ABI-encoded proof and public signals. | ||
| function register(address _user, bytes memory _data) public override { | ||
| if (maci != msg.sender) revert OnlyMACI(); | ||
|
|
||
| // Decode the given _data bytes | ||
| (uint256[2] memory _pA, uint256[2][2] memory _pB, uint256[2] memory _pC, uint256[38] memory _pubSignals) = abi | ||
| .decode(_data, (uint256[2], uint256[2][2], uint256[2], uint256[38])); | ||
|
|
||
| // Ticket ID is stored at index 0 | ||
| uint256 ticketId = _pubSignals[0]; | ||
| if (registeredTickets[ticketId]) revert AlreadyRegistered(); | ||
|
|
||
| registeredTickets[ticketId] = true; | ||
|
|
||
| // Verify proof | ||
| if (!verifier.verifyProof(_pA, _pB, _pC, _pubSignals)) revert InvalidProof(); | ||
|
|
||
| // Event id is stored at index 15 | ||
| if (_pubSignals[15] != validEventId) revert InvalidEventId(); | ||
|
|
||
| // Signers are stored at index 13 and 14 | ||
| if (_pubSignals[13] != validSigner1 || _pubSignals[14] != validSigner2) revert InvalidSigners(); | ||
|
|
||
| // Watermark is stored at index 37 | ||
| // user address converted to bigint is used as the watermark | ||
| if (_pubSignals[37] != uint256(uint160(_user))) revert InvalidWatermark(); | ||
| } | ||
| } |
428 changes: 428 additions & 0 deletions
428
contracts/contracts/gatekeepers/zupass/ZupassGroth16Verifier.sol
Large diffs are not rendered by default.
Oops, something went wrong.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,10 @@ | ||
| import { parse as uuidParse } from "uuid"; | ||
|
|
||
| /** | ||
| * Converts a UUID string into a bigint. | ||
| */ | ||
| export function uuidToBigInt(v: string): bigint { | ||
| // a uuid is just a particular representation of 16 bytes | ||
| const bytes = uuidParse(v); | ||
| return BigInt(`0x${Buffer.from(bytes).toString("hex")}`); | ||
| } |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Oops, something went wrong.