From 1e43aa4373ce643c96b0de46d7125b1b85b3b0c3 Mon Sep 17 00:00:00 2001 From: gozzy Date: Sun, 21 Aug 2022 13:00:01 +0000 Subject: [PATCH] initialise --- Dockerfile | 10 + README.md | 61 + abis/PriceOracle.abi.json | 28 + abis/mixerABI.json | 498 +++++ app.js | 1 + config.js | 153 ++ docker-compose.yml | 89 + package-lock.json | 4138 +++++++++++++++++++++++++++++++++++++ package.json | 26 + src/Fetcher.js | 56 + src/index.js | 98 + src/instances.js | 15 + src/redis.js | 19 + src/relayController.js | 162 ++ src/sender.js | 81 + src/setupWeb3.js | 16 + src/utils.js | 178 ++ 17 files changed, 5629 insertions(+) create mode 100644 Dockerfile create mode 100644 README.md create mode 100644 abis/PriceOracle.abi.json create mode 100644 abis/mixerABI.json create mode 100644 app.js create mode 100644 config.js create mode 100644 docker-compose.yml create mode 100644 package-lock.json create mode 100644 package.json create mode 100644 src/Fetcher.js create mode 100644 src/index.js create mode 100644 src/instances.js create mode 100644 src/redis.js create mode 100644 src/relayController.js create mode 100644 src/sender.js create mode 100644 src/setupWeb3.js create mode 100644 src/utils.js diff --git a/Dockerfile b/Dockerfile new file mode 100644 index 0000000..e1ea4ed --- /dev/null +++ b/Dockerfile @@ -0,0 +1,10 @@ +FROM node:12 +WORKDIR /app + +COPY package.json package-lock.json ./ +RUN npm install && npm cache clean --force +COPY . . + +EXPOSE 8000 +HEALTHCHECK CMD curl -f http://localhost:8000/status +CMD ["npm", "run", "start"] diff --git a/README.md b/README.md new file mode 100644 index 0000000..f0d57d4 --- /dev/null +++ b/README.md @@ -0,0 +1,61 @@ +# Relayer for Tornado Cash [![Build Status](https://github.com/tornadocash/relayer/workflows/build/badge.svg)](https://github.com/tornadocash/relayer/actions) [![Docker Image Version (latest semver)](https://img.shields.io/docker/v/tornadocash/relayer?logo=docker&logoColor=%23FFFFFF&sort=semver)](https://hub.docker.com/repository/docker/tornadocash/relayer) + +## Run locally + +1. `npm i` +2. `cp .env.example .env` +3. Modify `.env` as needed +4. `npm run start` +5. Go to `http://127.0.0.1:8000` +6. In order to execute withdraw request, you can run following command + +```bash +curl -X POST -H 'content-type:application/json' --data '' http://127.0.0.1:8000/relay +``` + +Relayer should return a transaction hash. + +_Note._ If you want to change contracts' addresses go to [config.js](./config.js) file. + +## Deploy with docker-compose + +docker-compose.yml contains a stack that will automatically provision SSL certificates for your domain name and will add a https redirect to port 80. + +1. Download docker-compose.yml +2. Change environment variables for `kovan` containers as appropriate + - add `PRIVATE_KEY` for your relayer address (without 0x prefix) + - set `VIRTUAL_HOST` and `LETSENCRYPT_HOST` to your domain and add DNS record pointing to your relayer ip address + - customize `RELAYER_FEE` + - update `RPC_URL` if needed + - update `REDIS_URL` if needed +3. Run `docker-compose up -d` + +## Run as a Docker container + +1. `cp .env.example .env` +2. Modify `.env` as needed +3. `docker run -d --env-file .env -p 80:8000 tornadocash/relayer` + +In that case you will need to add https termination yourself because browsers with default settings will prevent https +tornado.cash UI from submitting your request over http connection + +## Input data example + +```json +{ + "proof": "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", + "args": [ + "0x1579d41e5290ab5bcec9a7df16705e49b5c0b869095299196c19c5e14462c9e3", + "0x0cf7f49c5b35c48b9e1d43713e0b46a75977e3d10521e9ac1e4c3cd5e3da1c5d", + "0x03ebd0748aa4d1457cf479cce56309641e0a98f5", + "0xbd4369dc854c5d5b79fe25492e3a3cfcb5d02da5", + "0x000000000000000000000000000000000000000000000000058d15e176280000", + "0x0000000000000000000000000000000000000000000000000000000000000000" + ], + "contract": "0xA27E34Ad97F171846bAf21399c370c9CE6129e0D" +} +``` + +Disclaimer: + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. diff --git a/abis/PriceOracle.abi.json b/abis/PriceOracle.abi.json new file mode 100644 index 0000000..5b9f897 --- /dev/null +++ b/abis/PriceOracle.abi.json @@ -0,0 +1,28 @@ +[ + { + "constant": true, + "inputs": [ + { + "internalType": "contract IERC20[]", + "name": "fromTokens", + "type": "address[]" + }, + { + "internalType": "uint256[]", + "name": "oneUnitAmounts", + "type": "uint256[]" + } + ], + "name": "getPricesInETH", + "outputs": [ + { + "internalType": "uint256[]", + "name": "prices", + "type": "uint256[]" + } + ], + "payable": false, + "stateMutability": "view", + "type": "function" + } +] \ No newline at end of file diff --git a/abis/mixerABI.json b/abis/mixerABI.json new file mode 100644 index 0000000..8879c61 --- /dev/null +++ b/abis/mixerABI.json @@ -0,0 +1,498 @@ +[ + { + "constant": false, + "inputs": [ + { + "internalType": "address", + "name": "_newOperator", + "type": "address" + } + ], + "name": "changeOperator", + "outputs": [], + "payable": false, + "stateMutability": "nonpayable", + "type": "function" + }, + { + "constant": true, + "inputs": [ + { + "internalType": "bytes32", + "name": "", + "type": "bytes32" + } + ], + "name": "nullifierHashes", + "outputs": [ + { + "internalType": "bool", + "name": "", + "type": "bool" + } + ], + "payable": false, + "stateMutability": "view", + "type": "function" + }, + { + "constant": false, + "inputs": [ + { + "internalType": "bytes", + "name": "_proof", + "type": "bytes" + }, + { + "internalType": "bytes32", + "name": "_root", + "type": "bytes32" + }, + { + "internalType": "bytes32", + "name": "_nullifierHash", + "type": "bytes32" + }, + { + "internalType": "address payable", + "name": "_recipient", + "type": "address" + }, + { + "internalType": "address payable", + "name": "_relayer", + "type": "address" + }, + { + "internalType": "uint256", + "name": "_fee", + "type": "uint256" + }, + { + "internalType": "uint256", + "name": "_refund", + "type": "uint256" + } + ], + "name": "withdraw", + "outputs": [], + "payable": true, + "stateMutability": "payable", + "type": "function" + }, + { + "constant": true, + "inputs": [], + "name": "verifier", + "outputs": [ + { + "internalType": "contract IVerifier", + "name": "", + "type": "address" + } + ], + "payable": false, + "stateMutability": "view", + "type": "function" + }, + { + "constant": true, + "inputs": [ + { + "internalType": "bytes32", + "name": "_left", + "type": "bytes32" + }, + { + "internalType": "bytes32", + "name": "_right", + "type": "bytes32" + } + ], + "name": "hashLeftRight", + "outputs": [ + { + "internalType": "bytes32", + "name": "", + "type": "bytes32" + } + ], + "payable": false, + "stateMutability": "pure", + "type": "function" + }, + { + "constant": true, + "inputs": [], + "name": "FIELD_SIZE", + "outputs": [ + { + "internalType": "uint256", + "name": "", + "type": "uint256" + } + ], + "payable": false, + "stateMutability": "view", + "type": "function" + }, + { + "constant": true, + "inputs": [], + "name": "levels", + "outputs": [ + { + "internalType": "uint32", + "name": "", + "type": "uint32" + } + ], + "payable": false, + "stateMutability": "view", + "type": "function" + }, + { + "constant": true, + "inputs": [], + "name": "operator", + "outputs": [ + { + "internalType": "address", + "name": "", + "type": "address" + } + ], + "payable": false, + "stateMutability": "view", + "type": "function" + }, + { + "constant": true, + "inputs": [ + { + "internalType": "bytes32", + "name": "_root", + "type": "bytes32" + } + ], + "name": "isKnownRoot", + "outputs": [ + { + "internalType": "bool", + "name": "", + "type": "bool" + } + ], + "payable": false, + "stateMutability": "view", + "type": "function" + }, + { + "constant": true, + "inputs": [ + { + "internalType": "bytes32", + "name": "", + "type": "bytes32" + } + ], + "name": "commitments", + "outputs": [ + { + "internalType": "bool", + "name": "", + "type": "bool" + } + ], + "payable": false, + "stateMutability": "view", + "type": "function" + }, + { + "constant": true, + "inputs": [], + "name": "denomination", + "outputs": [ + { + "internalType": "uint256", + "name": "", + "type": "uint256" + } + ], + "payable": false, + "stateMutability": "view", + "type": "function" + }, + { + "constant": true, + "inputs": [], + "name": "currentRootIndex", + "outputs": [ + { + "internalType": "uint32", + "name": "", + "type": "uint32" + } + ], + "payable": false, + "stateMutability": "view", + "type": "function" + }, + { + "constant": false, + "inputs": [ + { + "internalType": "address", + "name": "_newVerifier", + "type": "address" + } + ], + "name": "updateVerifier", + "outputs": [], + "payable": false, + "stateMutability": "nonpayable", + "type": "function" + }, + { + "constant": false, + "inputs": [ + { + "internalType": "bytes32", + "name": "_commitment", + "type": "bytes32" + } + ], + "name": "deposit", + "outputs": [], + "payable": true, + "stateMutability": "payable", + "type": "function" + }, + { + "constant": true, + "inputs": [], + "name": "getLastRoot", + "outputs": [ + { + "internalType": "bytes32", + "name": "", + "type": "bytes32" + } + ], + "payable": false, + "stateMutability": "view", + "type": "function" + }, + { + "constant": true, + "inputs": [ + { + "internalType": "uint256", + "name": "", + "type": "uint256" + } + ], + "name": "roots", + "outputs": [ + { + "internalType": "bytes32", + "name": "", + "type": "bytes32" + } + ], + "payable": false, + "stateMutability": "view", + "type": "function" + }, + { + "constant": true, + "inputs": [], + "name": "ROOT_HISTORY_SIZE", + "outputs": [ + { + "internalType": "uint32", + "name": "", + "type": "uint32" + } + ], + "payable": false, + "stateMutability": "view", + "type": "function" + }, + { + "constant": true, + "inputs": [ + { + "internalType": "bytes32", + "name": "_nullifierHash", + "type": "bytes32" + } + ], + "name": "isSpent", + "outputs": [ + { + "internalType": "bool", + "name": "", + "type": "bool" + } + ], + "payable": false, + "stateMutability": "view", + "type": "function" + }, + { + "constant": true, + "inputs": [ + { + "internalType": "uint256", + "name": "", + "type": "uint256" + } + ], + "name": "zeros", + "outputs": [ + { + "internalType": "bytes32", + "name": "", + "type": "bytes32" + } + ], + "payable": false, + "stateMutability": "view", + "type": "function" + }, + { + "constant": true, + "inputs": [], + "name": "ZERO_VALUE", + "outputs": [ + { + "internalType": "uint256", + "name": "", + "type": "uint256" + } + ], + "payable": false, + "stateMutability": "view", + "type": "function" + }, + { + "constant": true, + "inputs": [ + { + "internalType": "uint256", + "name": "", + "type": "uint256" + } + ], + "name": "filledSubtrees", + "outputs": [ + { + "internalType": "bytes32", + "name": "", + "type": "bytes32" + } + ], + "payable": false, + "stateMutability": "view", + "type": "function" + }, + { + "constant": true, + "inputs": [], + "name": "nextIndex", + "outputs": [ + { + "internalType": "uint32", + "name": "", + "type": "uint32" + } + ], + "payable": false, + "stateMutability": "view", + "type": "function" + }, + { + "inputs": [ + { + "internalType": "contract IVerifier", + "name": "_verifier", + "type": "address" + }, + { + "internalType": "uint256", + "name": "_denomination", + "type": "uint256" + }, + { + "internalType": "uint32", + "name": "_merkleTreeHeight", + "type": "uint32" + }, + { + "internalType": "address", + "name": "_operator", + "type": "address" + } + ], + "payable": false, + "stateMutability": "nonpayable", + "type": "constructor" + }, + { + "anonymous": false, + "inputs": [ + { + "indexed": true, + "internalType": "bytes32", + "name": "commitment", + "type": "bytes32" + }, + { + "indexed": false, + "internalType": "uint32", + "name": "leafIndex", + "type": "uint32" + }, + { + "indexed": false, + "internalType": "uint256", + "name": "timestamp", + "type": "uint256" + } + ], + "name": "Deposit", + "type": "event" + }, + { + "anonymous": false, + "inputs": [ + { + "indexed": false, + "internalType": "address", + "name": "to", + "type": "address" + }, + { + "indexed": false, + "internalType": "bytes32", + "name": "nullifierHash", + "type": "bytes32" + }, + { + "indexed": true, + "internalType": "address", + "name": "relayer", + "type": "address" + }, + { + "indexed": false, + "internalType": "uint256", + "name": "fee", + "type": "uint256" + } + ], + "name": "Withdrawal", + "type": "event" + } +] diff --git a/app.js b/app.js new file mode 100644 index 0000000..28a9d8c --- /dev/null +++ b/app.js @@ -0,0 +1 @@ +module.exports = require('./src/index') diff --git a/config.js b/config.js new file mode 100644 index 0000000..f707f81 --- /dev/null +++ b/config.js @@ -0,0 +1,153 @@ +require('dotenv').config() + +module.exports = { + netId: Number(process.env.NET_ID) || 42, + redisUrl: process.env.REDIS_URL, + rpcUrl: process.env.RPC_URL || 'https://kovan.infura.io/', + oracleRpcUrl: process.env.ORACLE_RPC_URL || 'https://mainnet.infura.io/', + oracleAddress: '0xA2b8E7ee7c8a18ea561A5CF7C9C365592026E374', + privateKey: process.env.PRIVATE_KEY, + mixers: { + netId1: { + eth: { + mixerAddress: { + '0.1': '0x12D66f87A04A9E220743712cE6d9bB1B5616B8Fc', + '1': '0x47CE0C6eD5B0Ce3d3A51fdb1C52DC66a7c3c2936', + '10': '0x910Cbd523D972eb0a6f4cAe4618aD62622b39DbF', + '100': '0xA160cdAB225685dA1d56aa342Ad8841c3b53f291' + }, + symbol: 'ETH', + decimals: 18 + }, + dai: { + mixerAddress: { + '100': '0xD4B88Df4D29F5CedD6857912842cff3b20C8Cfa3', + '1000': '0xFD8610d20aA15b7B2E3Be39B396a1bC3516c7144', + '10000': '0xF60dD140cFf0706bAE9Cd734Ac3ae76AD9eBC32A', + '100000': undefined + }, + tokenAddress: '0x6B175474E89094C44Da98b954EedeAC495271d0F', + symbol: 'DAI', + decimals: 18 + }, + cdai: { + mixerAddress: { + '5000': '0x22aaA7720ddd5388A3c0A3333430953C68f1849b', + '50000': '0xBA214C1c1928a32Bffe790263E38B4Af9bFCD659', + '500000': '0xb1C8094B234DcE6e03f10a5b673c1d8C69739A00', + '5000000': undefined + }, + tokenAddress: '0x5d3a536E4D6DbD6114cc1Ead35777bAB948E3643', + symbol: 'cDAI', + decimals: 8 + }, + usdc: { + mixerAddress: { + '100': '0xd96f2B1c14Db8458374d9Aca76E26c3D18364307', + '1000': '0x4736dCf1b7A3d580672CcE6E7c65cd5cc9cFBa9D', + '10000': '0xD691F27f38B395864Ea86CfC7253969B409c362d', + '100000': undefined + }, + tokenAddress: '0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48', + symbol: 'USDC', + decimals: 6 + }, + cusdc: { + mixerAddress: { + '5000': '0xaEaaC358560e11f52454D997AAFF2c5731B6f8a6', + '50000': '0x1356c899D8C9467C7f71C195612F8A395aBf2f0a', + '500000': '0xA60C772958a3eD56c1F15dD055bA37AC8e523a0D', + '5000000': undefined + }, + tokenAddress: '0x39AA39c021dfbaE8faC545936693aC917d5E7563', + symbol: 'cUSDC', + decimals: 8 + }, + usdt: { + mixerAddress: { + '100': '0x169AD27A470D064DEDE56a2D3ff727986b15D52B', + '1000': '0x0836222F2B2B24A3F36f98668Ed8F0B38D1a872f', + '10000': '0xF67721A2D8F736E75a49FdD7FAd2e31D8676542a', + '100000': '0x9AD122c22B14202B4490eDAf288FDb3C7cb3ff5E' + }, + tokenAddress: '0xdAC17F958D2ee523a2206206994597C13D831ec7', + symbol: 'USDT', + decimals: 6 + } + }, + netId42: { + eth: { + mixerAddress: { + '0.1': '0x8b3f5393bA08c24cc7ff5A66a832562aAB7bC95f', + '1': '0xD6a6AC46d02253c938B96D12BE439F570227aE8E', + '10': '0xe1BE96331391E519471100c3c1528B66B8F4e5a7', + '100': '0xd037E0Ac98Dab2fCb7E296c69C6e52767Ae5414D' + }, + symbol: 'ETH', + decimals: 18 + }, + dai: { + mixerAddress: { + '100': '0xdf2d3cC5F361CF95b3f62c4bB66deFe3FDE47e3D', + '1000': '0xD96291dFa35d180a71964D0894a1Ae54247C4ccD', + '10000': '0xb192794f72EA45e33C3DF6fe212B9c18f6F45AE3', + '100000': undefined + }, + tokenAddress: '0x4F96Fe3b7A6Cf9725f59d353F723c1bDb64CA6Aa', + symbol: 'DAI', + decimals: 18 + }, + cdai: { + mixerAddress: { + '5000': '0x6Fc9386ABAf83147b3a89C36D422c625F44121C8', + '50000': '0x7182EA067e0f050997444FCb065985Fd677C16b6', + '500000': '0xC22ceFd90fbd1FdEeE554AE6Cc671179BC3b10Ae', + '5000000': undefined + }, + tokenAddress: '0xe7bc397DBd069fC7d0109C0636d06888bb50668c', + symbol: 'cDAI', + decimals: 8 + }, + usdc: { + mixerAddress: { + '100': '0x137E2B6d185018e7f09f6cf175a970e7fC73826C', + '1000': '0xcC7f1633A5068E86E3830e692e3e3f8f520525Af', + '10000': '0x28C8f149a0ab8A9bdB006B8F984fFFCCE52ef5EF', + '100000': undefined + }, + tokenAddress: '0x75B0622Cec14130172EaE9Cf166B92E5C112FaFF', + symbol: 'USDC', + decimals: 6 + }, + cusdc: { + mixerAddress: { + '5000': '0xc0648F28ABA385c8a1421Bbf1B59e3c474F89cB0', + '50000': '0x0C53853379c6b1A7B74E0A324AcbDD5Eabd4981D', + '500000': '0xf84016A0E03917cBe700D318EB1b7a53e6e3dEe1', + '5000000': undefined + }, + tokenAddress: '0xcfC9bB230F00bFFDB560fCe2428b4E05F3442E35', + symbol: 'cUSDC', + decimals: 8 + }, + usdt: { + mixerAddress: { + '100': '0x327853Da7916a6A0935563FB1919A48843036b42', + '1000': '0x531AA4DF5858EA1d0031Dad16e3274609DE5AcC0', + '10000': '0x0958275F0362cf6f07D21373aEE0cf37dFe415dD', + '100000': '0x14aEd24B67EaF3FF28503eB92aeb217C47514364' + }, + tokenAddress: '0x03c5F29e9296006876d8DF210BCFfD7EA5Db1Cf1', + symbol: 'USDT', + decimals: 6 + } + } + }, + defaultGasPrice: 20, + port: process.env.APP_PORT, + relayerServiceFee: Number(process.env.RELAYER_FEE), + maxGasPrice: process.env.MAX_GAS_PRICE || 200, + watherInterval: Number(process.env.NONCE_WATCHER_INTERVAL || 30) * 1000, + pendingTxTimeout: Number(process.env.ALLOWABLE_PENDING_TX_TIMEOUT || 180) * 1000, + gasBumpPercentage: process.env.GAS_PRICE_BUMP_PERCENTAGE || 20 +} diff --git a/docker-compose.yml b/docker-compose.yml new file mode 100644 index 0000000..4398985 --- /dev/null +++ b/docker-compose.yml @@ -0,0 +1,89 @@ +version: '2' + +services: + kovan: + image: tornadocash/relayer + restart: always + environment: + VIRTUAL_HOST: example.duckdns.org + LETSENCRYPT_HOST: example.duckdns.org + NET_ID: 42 + RPC_URL: https://kovan.infura.io + # ORACLE_RPC_URL should always point to the mainnet + ORACLE_RPC_URL: https://mainnet.infura.io + # without 0x prefix + PRIVATE_KEY: + # 2.5 means 2.5% + RELAYER_FEE: 2.5 + REDIS_URL: redis://redis/0 + nginx_proxy_read_timeout: 600 + depends_on: + - redis + + mainnet: + image: tornadocash/relayer + restart: always + environment: + VIRTUAL_HOST: example2.duckdns.org + LETSENCRYPT_HOST: example2.duckdns.org + NET_ID: 1 + RPC_URL: https://mainnet.infura.io + # ORACLE_RPC_URL should always point to the mainnet + ORACLE_RPC_URL: https://mainnet.infura.io + # without 0x prefix + PRIVATE_KEY: + # 2.5 means 2.5% + RELAYER_FEE: 2.5 + REDIS_URL: redis://redis/1 + nginx_proxy_read_timeout: 600 + depends_on: + - redis + + redis: + image: redis + restart: always + command: [redis-server, --appendonly, 'yes'] + volumes: + - redis:/data + + nginx: + image: nginx:alpine + container_name: nginx + restart: always + ports: + - 80:80 + - 443:443 + volumes: + - conf:/etc/nginx/conf.d + - vhost:/etc/nginx/vhost.d + - html:/usr/share/nginx/html + - certs:/etc/nginx/certs + logging: + driver: none + + dockergen: + image: poma/docker-gen + container_name: dockergen + restart: always + command: -notify-sighup nginx -watch /etc/docker-gen/templates/nginx.tmpl /etc/nginx/conf.d/default.conf + volumes_from: + - nginx + volumes: + - /var/run/docker.sock:/var/run/docker.sock:ro + + letsencrypt: + image: jrcs/letsencrypt-nginx-proxy-companion + container_name: letsencrypt + restart: always + environment: + NGINX_DOCKER_GEN_CONTAINER: dockergen + volumes_from: + - nginx + - dockergen + +volumes: + conf: + vhost: + html: + certs: + redis: diff --git a/package-lock.json b/package-lock.json new file mode 100644 index 0000000..c19c4ad --- /dev/null +++ b/package-lock.json @@ -0,0 +1,4138 @@ +{ + "name": "relay", + "version": "3.0.2", + "lockfileVersion": 1, + "requires": true, + "dependencies": { + 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+ "test": "echo \"Error: no test specified\" && exit 1" + }, + "author": "tornado.cash", + "license": "MIT", + "dependencies": { + "bull": "^3.12.1", + "dotenv": "^8.2.0", + "express": "^4.17.1", + "gas-price-oracle": "^0.2.2", + "ioredis": "^4.14.1", + "node-fetch": "^2.6.0", + "web3": "^1.2.2", + "web3-utils": "^1.2.2" + }, + "devDependencies": { + "eslint": "^6.6.0" + } +} diff --git a/src/Fetcher.js b/src/Fetcher.js new file mode 100644 index 0000000..4bdbfed --- /dev/null +++ b/src/Fetcher.js @@ -0,0 +1,56 @@ +const Web3 = require('web3') +const { defaultGasPrice, oracleRpcUrl, oracleAddress } = require('../config') +const { getArgsForOracle } = require('./utils') +const { redisClient } = require('./redis') +const priceOracleABI = require('../abis/PriceOracle.abi.json') + +class Fetcher { + constructor(web3) { + this.web3 = web3 + this.oracleWeb3 = new Web3(oracleRpcUrl) + this.oracle = new this.oracleWeb3.eth.Contract(priceOracleABI, oracleAddress) + this.ethPrices = { + dai: '6700000000000000', // 0.0067 + cdai: '157380000000000', + cusdc: '164630000000000', + usdc: '7878580000000000', + usdt: '7864940000000000' + } + this.tokenAddresses + this.oneUintAmount + this.currencyLookup + this.gasPrices = { + fast: defaultGasPrice + } + + const { tokenAddresses, oneUintAmount, currencyLookup } = getArgsForOracle() + this.tokenAddresses = tokenAddresses + this.oneUintAmount = oneUintAmount + this.currencyLookup = currencyLookup + } + async fetchPrices() { + try { + let prices = await this.oracle.methods.getPricesInETH(this.tokenAddresses, this.oneUintAmount).call() + this.ethPrices = prices.reduce((acc, price, i) => { + acc[this.currencyLookup[this.tokenAddresses[i]]] = price + return acc + }, {}) + setTimeout(() => this.fetchPrices(), 1000 * 30) + } catch (e) { + console.error('fetchPrices', e.message) + setTimeout(() => this.fetchPrices(), 1000 * 30) + } + } + async fetchNonce() { + try { + const nonce = await this.web3.eth.getTransactionCount(this.web3.eth.defaultAccount) + await redisClient.set('nonce', nonce) + console.log(`Current nonce: ${nonce}`) + } catch (e) { + console.error('fetchNonce failed', e.message) + setTimeout(this.fetchNonce, 3000) + } + } +} + +module.exports = Fetcher diff --git a/src/index.js b/src/index.js new file mode 100644 index 0000000..da70913 --- /dev/null +++ b/src/index.js @@ -0,0 +1,98 @@ +const express = require('express') +const { + netId, + port, + relayerServiceFee, + gasBumpPercentage, + pendingTxTimeout, + watherInterval, + maxGasPrice +} = require('../config') +const relayController = require('./relayController') +const { fetcher, web3, gasPriceOracle } = require('./instances') +const { getMixers } = require('./utils') +const mixers = getMixers() +const { redisClient } = require('./redis') +const { version } = require('../package.json') +const app = express() +app.use(express.json()) + +app.use((err, req, res, next) => { + if (err) { + console.log('Invalid Request data') + res.send('Invalid Request data') + } else { + next() + } +}) + +app.use(function (req, res, next) { + res.header('Access-Control-Allow-Origin', '*') + res.header('Access-Control-Allow-Headers', 'Origin, X-Requested-With, Content-Type, Accept') + next() +}) + +app.get('/', function (req, res) { + // just for testing purposes + res.send( + 'This is tornado.cash Relayer service. Check the /status for settings' + ) +}) + +app.get('/status', async function (req, res) { + let nonce = await redisClient.get('nonce') + let latestBlock = null + try { + latestBlock = await web3.eth.getBlockNumber() + } catch (e) { + console.error('Problem with RPC', e) + } + const { ethPrices } = fetcher + res.json({ + relayerAddress: web3.eth.defaultAccount, + mixers, + gasPrices: await gasPriceOracle.gasPrices(), + netId, + ethPrices, + relayerServiceFee, + nonce, + version, + latestBlock + }) +}) + +app.post('/relay', relayController) +console.log('Version:', version) +let server = app.listen(port || 8000) +server.setTimeout(600000) +console.log('Gas price oracle started.') +fetcher.fetchPrices() +fetcher.fetchNonce() + +console.log('Relayer started on port', port || 8000) +console.log(`relayerAddress: ${web3.eth.defaultAccount}`) +console.log(`mixers: ${JSON.stringify(mixers)}`) +console.log(`netId: ${netId}`) +console.log(`ethPrices: ${JSON.stringify(fetcher.ethPrices)}`) + +const { + GAS_PRICE_BUMP_PERCENTAGE, + ALLOWABLE_PENDING_TX_TIMEOUT, + NONCE_WATCHER_INTERVAL, + MAX_GAS_PRICE +} = process.env +if (!NONCE_WATCHER_INTERVAL) { + console.log(`NONCE_WATCHER_INTERVAL is not set. Using default value ${watherInterval / 1000} sec`) +} + +if (!GAS_PRICE_BUMP_PERCENTAGE) { + console.log(`GAS_PRICE_BUMP_PERCENTAGE is not set. Using default value ${gasBumpPercentage}%`) +} + +if (!ALLOWABLE_PENDING_TX_TIMEOUT) { + console.log(`ALLOWABLE_PENDING_TX_TIMEOUT is not set. Using default value ${pendingTxTimeout / 1000} sec`) +} + +if (!MAX_GAS_PRICE) { + console.log(`ALLOWABLE_PENDING_TX_TIMEOUT is not set. Using default value ${maxGasPrice} Gwei`) +} diff --git a/src/instances.js b/src/instances.js new file mode 100644 index 0000000..a87c675 --- /dev/null +++ b/src/instances.js @@ -0,0 +1,15 @@ +const { rpcUrl } = require('../config') +const Fetcher = require('./Fetcher') +const Sender = require('./sender') +const { GasPriceOracle } = require('gas-price-oracle') +const web3 = require('./setupWeb3') +const fetcher = new Fetcher(web3) +const sender = new Sender(web3) +const gasPriceOracle = new GasPriceOracle({ defaultRpc: rpcUrl }) + +module.exports = { + fetcher, + web3, + sender, + gasPriceOracle +} diff --git a/src/redis.js b/src/redis.js new file mode 100644 index 0000000..fa710e6 --- /dev/null +++ b/src/redis.js @@ -0,0 +1,19 @@ +const { redisUrl } = require('../config') +const Redis = require('ioredis') +const redisClient = new Redis(redisUrl) +const subscriber = new Redis(redisUrl) + +const redisOpts = { + createClient: function (type) { + switch (type) { + case 'client': + return redisClient + case 'subscriber': + return subscriber + default: + return new Redis(redisUrl) + } + } +} + +module.exports = { redisOpts, redisClient } diff --git a/src/relayController.js b/src/relayController.js new file mode 100644 index 0000000..6195d45 --- /dev/null +++ b/src/relayController.js @@ -0,0 +1,162 @@ +const Queue = require('bull') +const { numberToHex, toWei, toHex, toBN, toChecksumAddress } = require('web3-utils') +const mixerABI = require('../abis/mixerABI.json') +const { isValidProof, isValidArgs, isKnownContract, isEnoughFee } = require('./utils') +const config = require('../config') +const { redisClient, redisOpts } = require('./redis') + +const { web3, fetcher, sender, gasPriceOracle } = require('./instances') +const withdrawQueue = new Queue('withdraw', redisOpts) + +const reponseCbs = {} +let respLambda = (job, { msg, status }) => { + const resp = reponseCbs[job.id] + resp.status(status).json(msg) + delete reponseCbs[job.id] +} +withdrawQueue.on('completed', respLambda) + +async function relayController(req, resp) { + let requestJob + + const { proof, args, contract } = req.body + let { valid, reason } = isValidProof(proof) + if (!valid) { + console.log('Proof is invalid:', reason) + return resp.status(400).json({ error: 'Proof format is invalid' }) + } + + // eslint-disable-next-line no-extra-semi + ;({ valid, reason } = isValidArgs(args)) + if (!valid) { + console.log('Args are invalid:', reason) + return resp.status(400).json({ error: 'Withdraw arguments are invalid' }) + } + + let currency, amount + ;({ valid, currency, amount } = isKnownContract(contract)) + if (!valid) { + console.log('Contract does not exist:', contract) + return resp.status(400).json({ error: 'This relayer does not support the token' }) + } + + const [root, nullifierHash, recipient, relayer, fee, refund] = [ + args[0], + args[1], + toChecksumAddress(args[2]), + toChecksumAddress(args[3]), + toBN(args[4]), + toBN(args[5]) + ] + console.log('fee, refund', fee.toString(), refund.toString(), recipient) + if (currency === 'eth' && !refund.isZero()) { + return resp.status(400).json({ error: 'Cannot send refund for eth currency.' }) + } + + if (relayer !== web3.eth.defaultAccount) { + console.log('This proof is for different relayer:', relayer) + return resp.status(400).json({ error: 'Relayer address is invalid' }) + } + + requestJob = await withdrawQueue.add( + { + contract, + nullifierHash, + root, + proof, + args, + currency, + amount, + fee: fee.toString(), + refund: refund.toString() + }, + { removeOnComplete: true } + ) + reponseCbs[requestJob.id] = resp +} + +withdrawQueue.process(async function (job, done) { + console.log(Date.now(), ' withdraw started', job.id) + const gasPrices = await gasPriceOracle.gasPrices() + const { contract, nullifierHash, root, proof, args, refund, currency, amount, fee } = job.data + console.log(JSON.stringify(job.data)) + // job.data contains the custom data passed when the job was created + // job.id contains id of this job. + try { + const mixer = new web3.eth.Contract(mixerABI, contract) + const isSpent = await mixer.methods.isSpent(nullifierHash).call() + if (isSpent) { + done(null, { + status: 400, + msg: { + error: 'The note has been spent.' + } + }) + return + } + const isKnownRoot = await mixer.methods.isKnownRoot(root).call() + if (!isKnownRoot) { + done(null, { + status: 400, + msg: { + error: 'The merkle root is too old or invalid.' + } + }) + return + } + + let gas = await mixer.methods.withdraw(proof, ...args).estimateGas({ + from: web3.eth.defaultAccount, + value: refund + }) + + gas += 50000 + const ethPrices = fetcher.ethPrices + const { isEnough, reason } = isEnoughFee({ + gas, + gasPrices, + currency, + amount, + refund: toBN(refund), + ethPrices, + fee: toBN(fee) + }) + if (!isEnough) { + console.log(`Wrong fee: ${reason}`) + done(null, { + status: 400, + msg: { error: reason } + }) + return + } + + const data = mixer.methods.withdraw(proof, ...args).encodeABI() + let nonce = Number(await redisClient.get('nonce')) + console.log('nonce', nonce) + const tx = { + from: web3.eth.defaultAccount, + value: numberToHex(refund), + gas: numberToHex(gas), + gasPrice: toHex(toWei(gasPrices.fast.toString(), 'gwei')), + // you can use this gasPrice to test watcher + // gasPrice: numberToHex(100000000), + to: mixer._address, + netId: config.netId, + data, + nonce + } + tx.date = Date.now() + await redisClient.set('tx:' + nonce, JSON.stringify(tx)) + nonce += 1 + await redisClient.set('nonce', nonce) + sender.sendTx(tx, done) + } catch (e) { + console.error(e, 'estimate gas failed') + done(null, { + status: 400, + msg: { error: 'Internal Relayer Error. Please use a different relayer service' } + }) + } +}) + +module.exports = relayController diff --git a/src/sender.js b/src/sender.js new file mode 100644 index 0000000..f4dacdc --- /dev/null +++ b/src/sender.js @@ -0,0 +1,81 @@ +const { redisClient } = require('./redis') +const config = require('../config') +const { toBN, toHex, toWei, BN, fromWei } = require('web3-utils') + +class Sender { + constructor(web3) { + this.web3 = web3 + this.watherInterval = config.watherInterval + this.pendingTxTimeout = config.pendingTxTimeout + this.gasBumpPercentage = 100 + Number(config.gasBumpPercentage) + this.watcher() + } + + async watcher() { + try { + const networkNonce = await this.web3.eth.getTransactionCount(this.web3.eth.defaultAccount) + let tx = await redisClient.get('tx:' + networkNonce) + if (tx) { + tx = JSON.parse(tx) + if (Date.now() - tx.date > this.pendingTxTimeout) { + const newGasPrice = toBN(tx.gasPrice).mul(toBN(this.gasBumpPercentage)).div(toBN(100)) + const maxGasPrice = toBN(toWei(config.maxGasPrice.toString(), 'Gwei')) + tx.gasPrice = toHex(BN.min(newGasPrice, maxGasPrice)) + tx.date = Date.now() + await redisClient.set('tx:' + tx.nonce, JSON.stringify(tx)) + console.log('resubmitting with gas price', fromWei(tx.gasPrice.toString(), 'gwei'), ' gwei') + this.sendTx(tx, null, 9999) + } + } + } catch (e) { + console.error('watcher error:', e) + } finally { + setTimeout(() => this.watcher(), this.watherInterval) + } + } + + async sendTx(tx, done, retryAttempt = 1) { + let signedTx = await this.web3.eth.accounts.signTransaction(tx, config.privateKey) + let result = this.web3.eth.sendSignedTransaction(signedTx.rawTransaction) + + result + .once('transactionHash', (txHash) => { + console.log(`A new successfully sent tx ${txHash}`) + if (done) { + done(null, { + status: 200, + msg: { txHash } + }) + } + }) + .on('error', async (e) => { + console.log(`Error for tx with nonce ${tx.nonce}\n${e.message}`) + if ( + e.message === + 'Returned error: Transaction gas price supplied is too low. There is another transaction with same nonce in the queue. Try increasing the gas price or incrementing the nonce.' || + e.message === 'Returned error: Transaction nonce is too low. Try incrementing the nonce.' || + e.message === 'Returned error: nonce too low' || + e.message === 'Returned error: replacement transaction underpriced' + ) { + console.log('nonce too low, retrying') + if (retryAttempt <= 10) { + retryAttempt++ + const newNonce = tx.nonce + 1 + tx.nonce = newNonce + await redisClient.set('nonce', newNonce) + await redisClient.set('tx:' + newNonce, JSON.stringify(tx)) + this.sendTx(tx, done, retryAttempt) + return + } + } + if (done) { + done(null, { + status: 400, + msg: { error: 'Internal Relayer Error. Please use a different relayer service' } + }) + } + }) + } +} + +module.exports = Sender diff --git a/src/setupWeb3.js b/src/setupWeb3.js new file mode 100644 index 0000000..e8f828f --- /dev/null +++ b/src/setupWeb3.js @@ -0,0 +1,16 @@ +const Web3 = require('web3') +const { rpcUrl, privateKey } = require('../config') + +function setup() { + try { + const web3 = new Web3(rpcUrl, null, { transactionConfirmationBlocks: 1 }) + const account = web3.eth.accounts.privateKeyToAccount('0x' + privateKey) + web3.eth.accounts.wallet.add('0x' + privateKey) + web3.eth.defaultAccount = account.address + return web3 + } catch (e) { + console.error('web3 failed') + } +} +const web3 = setup() +module.exports = web3 diff --git a/src/utils.js b/src/utils.js new file mode 100644 index 0000000..1482d43 --- /dev/null +++ b/src/utils.js @@ -0,0 +1,178 @@ +const { isHexStrict, toBN, toWei, BN } = require('web3-utils') +const { netId, mixers, relayerServiceFee } = require('../config') + +function isValidProof(proof) { + // validator expects `websnarkUtils.toSolidityInput(proof)` output + + if (!proof) { + return { valid: false, reason: 'The proof is empty.' } + } + + if (!isHexStrict(proof) || proof.length !== 2 + 2 * 8 * 32) { + return { valid: false, reason: 'Corrupted proof' } + } + + return { valid: true } +} + +function isValidArgs(args) { + if (!args) { + return { valid: false, reason: 'Args are empty' } + } + + if (args.length !== 6) { + return { valid: false, reason: 'Length of args is lower than 6' } + } + + for (let signal of args) { + if (!isHexStrict(signal)) { + return { valid: false, reason: `Corrupted signal ${signal}` } + } + } + + if ( + args[0].length !== 66 || + args[1].length !== 66 || + args[2].length !== 42 || + args[3].length !== 42 || + args[4].length !== 66 || + args[5].length !== 66 + ) { + return { valid: false, reason: 'The length one of the signals is incorrect' } + } + + return { valid: true } +} + +function isKnownContract(contract) { + const mixers = getMixers() + for (let currency of Object.keys(mixers)) { + for (let amount of Object.keys(mixers[currency].mixerAddress)) { + if (mixers[currency].mixerAddress[amount] === contract) { + return { valid: true, currency, amount } + } + } + } + return { valid: false } +} + +function sleep(ms) { + return new Promise((resolve) => setTimeout(resolve, ms)) +} + +function fromDecimals(value, decimals) { + value = value.toString() + let ether = value.toString() + const base = new BN('10').pow(new BN(decimals)) + const baseLength = base.toString(10).length - 1 || 1 + + const negative = ether.substring(0, 1) === '-' + if (negative) { + ether = ether.substring(1) + } + + if (ether === '.') { + throw new Error('[ethjs-unit] while converting number ' + value + ' to wei, invalid value') + } + + // Split it into a whole and fractional part + const comps = ether.split('.') + if (comps.length > 2) { + throw new Error('[ethjs-unit] while converting number ' + value + ' to wei, too many decimal points') + } + + let whole = comps[0] + let fraction = comps[1] + + if (!whole) { + whole = '0' + } + if (!fraction) { + fraction = '0' + } + if (fraction.length > baseLength) { + throw new Error('[ethjs-unit] while converting number ' + value + ' to wei, too many decimal places') + } + + while (fraction.length < baseLength) { + fraction += '0' + } + + whole = new BN(whole) + fraction = new BN(fraction) + let wei = whole.mul(base).add(fraction) + + if (negative) { + wei = wei.mul(negative) + } + + return new BN(wei.toString(10), 10) +} + +function isEnoughFee({ gas, gasPrices, currency, amount, refund, ethPrices, fee }) { + const { decimals } = mixers[`netId${netId}`][currency] + const decimalsPoint = + Math.floor(relayerServiceFee) === relayerServiceFee + ? 0 + : relayerServiceFee.toString().split('.')[1].length + + const roundDecimal = 10 ** decimalsPoint + const feePercent = toBN(fromDecimals(amount, decimals)) + .mul(toBN(relayerServiceFee * roundDecimal)) + .div(toBN(roundDecimal * 100)) + const expense = toBN(toWei(gasPrices.fast.toString(), 'gwei')).mul(toBN(gas)) + let desiredFee + switch (currency) { + case 'eth': { + desiredFee = expense.add(feePercent) + break + } + default: { + desiredFee = expense + .add(refund) + .mul(toBN(10 ** decimals)) + .div(toBN(ethPrices[currency])) + desiredFee = desiredFee.add(feePercent) + break + } + } + console.log( + 'sent fee, desired fee, feePercent', + fee.toString(), + desiredFee.toString(), + feePercent.toString() + ) + if (fee.lt(desiredFee)) { + return { isEnough: false, reason: 'Not enough fee' } + } + return { isEnough: true } +} + +function getArgsForOracle() { + const tokens = mixers['netId1'] + const tokenAddresses = [] + const oneUintAmount = [] + const currencyLookup = {} + Object.entries(tokens).map(([currency, data]) => { + if (currency !== 'eth') { + tokenAddresses.push(data.tokenAddress) + oneUintAmount.push(toBN('10').pow(toBN(data.decimals.toString())).toString()) + currencyLookup[data.tokenAddress] = currency + } + }) + return { tokenAddresses, oneUintAmount, currencyLookup } +} + +function getMixers() { + return mixers[`netId${netId}`] +} + +module.exports = { + isValidProof, + isValidArgs, + sleep, + isKnownContract, + isEnoughFee, + getMixers, + getArgsForOracle +}