change dir structure

scripts/compileHasher.js

@@ -0,0 +1,21 @@
+// Generates Hasher artifact at compile-time using Truffle's external compiler
+// mechanism
+const path = require('path')
+const fs = require('fs')
+const genContract = require('circomlib/src/mimcsponge_gencontract.js')
+
+// where Truffle will expect to find the results of the external compiler
+// command
+const outputPath = path.join(__dirname, '..', 'build', 'Hasher.json')
+
+function main() {
+  const contract = {
+    contractName: 'Hasher',
+    abi: genContract.abi,
+    bytecode: genContract.createCode('mimcsponge', 220),
+  }
+
+  fs.writeFileSync(outputPath, JSON.stringify(contract))
+}
+
+main()

scripts/downloadKeys.js

@@ -0,0 +1,43 @@
+const axios = require('axios')
+const path = require('path')
+const fs = require('fs')
+const files = ['withdraw.json', 'withdraw_proving_key.bin', 'Verifier.sol', 'withdraw_verification_key.json']
+const circuitsPath = __dirname + '/../build/circuits'
+const contractsPath = __dirname + '/../build/contracts'
+
+async function downloadFile({ url, path }) {
+  const writer = fs.createWriteStream(path)
+
+  const response = await axios({
+    url,
+    method: 'GET',
+    responseType: 'stream',
+  })
+
+  response.data.pipe(writer)
+
+  return new Promise((resolve, reject) => {
+    writer.on('finish', resolve)
+    writer.on('error', reject)
+  })
+}
+
+async function main() {
+  const release = await axios.get('https://api.github.com/repos/tornadocash/tornado-core/releases/latest')
+  const { assets } = release.data
+  if (!fs.existsSync(circuitsPath)) {
+    fs.mkdirSync(circuitsPath, { recursive: true })
+    fs.mkdirSync(contractsPath, { recursive: true })
+  }
+  for (let asset of assets) {
+    if (files.includes(asset.name)) {
+      console.log(`Downloading ${asset.name} ...`)
+      await downloadFile({
+        url: asset.browser_download_url,
+        path: path.resolve(__dirname, circuitsPath, asset.name),
+      })
+    }
+  }
+}
+
+main()

scripts/ganacheHelper.js

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+// This module is used only for tests
+function send(method, params = []) {
+  return new Promise((resolve, reject) => {
+    // eslint-disable-next-line no-undef
+    web3.currentProvider.send({
+      jsonrpc: '2.0',
+      id: Date.now(),
+      method,
+      params,
+    }, (err, res) => {
+      return err ? reject(err) : resolve(res)
+    })
+  })
+}
+
+const takeSnapshot = async () => {
+  return await send('evm_snapshot')
+}
+
+const traceTransaction = async (tx) => {
+  return await send('debug_traceTransaction', [tx, {}])
+}
+
+const revertSnapshot = async (id) => {
+  await send('evm_revert', [id])
+}
+
+const mineBlock = async (timestamp) => {
+  await send('evm_mine', [timestamp])
+}
+
+const increaseTime = async (seconds) => {
+  await send('evm_increaseTime', [seconds])
+}
+
+const minerStop = async () => {
+  await send('miner_stop', [])
+}
+
+const minerStart = async () => {
+  await send('miner_start', [])
+}
+
+module.exports = {
+  takeSnapshot,
+  revertSnapshot,
+  mineBlock,
+  minerStop,
+  minerStart,
+  increaseTime,
+  traceTransaction,
+}