Initial commit

.gitignore

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+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+lerna-debug.log*
+.pnpm-debug.log*
+
+# Diagnostic reports (https://nodejs.org/api/report.html)
+report.[0-9]*.[0-9]*.[0-9]*.[0-9]*.json
+
+# Runtime data
+pids
+*.pid
+*.seed
+*.pid.lock
+
+# Directory for instrumented libs generated by jscoverage/JSCover
+lib-cov
+
+# Coverage directory used by tools like istanbul
+coverage
+*.lcov
+
+# nyc test coverage
+.nyc_output
+
+# Grunt intermediate storage (https://gruntjs.com/creating-plugins#storing-task-files)
+.grunt
+
+# Bower dependency directory (https://bower.io/)
+bower_components
+
+# node-waf configuration
+.lock-wscript
+
+# Compiled binary addons (https://nodejs.org/api/addons.html)
+build/Release
+
+# Dependency directories
+node_modules/
+jspm_packages/
+
+# Snowpack dependency directory (https://snowpack.dev/)
+web_modules/
+
+# TypeScript cache
+*.tsbuildinfo
+
+# Optional npm cache directory
+.npm
+
+# Optional eslint cache
+.eslintcache
+
+# Optional stylelint cache
+.stylelintcache
+
+# Microbundle cache
+.rpt2_cache/
+.rts2_cache_cjs/
+.rts2_cache_es/
+.rts2_cache_umd/
+
+# Optional REPL history
+.node_repl_history
+
+# Output of 'npm pack'
+*.tgz
+
+# Yarn Integrity file
+.yarn-integrity
+
+# dotenv environment variable files
+.env
+.env.development.local
+.env.test.local
+.env.production.local
+.env.local
+
+# parcel-bundler cache (https://parceljs.org/)
+.cache
+.parcel-cache
+
+# Next.js build output
+.next
+out
+
+# Nuxt.js build / generate output
+.nuxt
+dist
+
+# Gatsby files
+.cache/
+# Comment in the public line in if your project uses Gatsby and not Next.js
+# https://nextjs.org/blog/next-9-1#public-directory-support
+# public
+
+# vuepress build output
+.vuepress/dist
+
+# vuepress v2.x temp and cache directory
+.temp
+.cache
+
+# Docusaurus cache and generated files
+.docusaurus
+
+# Serverless directories
+.serverless/
+
+# FuseBox cache
+.fusebox/
+
+# DynamoDB Local files
+.dynamodb/
+
+# TernJS port file
+.tern-port
+
+# Stores VSCode versions used for testing VSCode extensions
+.vscode-test
+
+# yarn v2
+.yarn/cache
+.yarn/unplugged
+.yarn/build-state.yml
+.yarn/install-state.gz
+.pnp.*

Procfile

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+web: node server.js

package.json

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+{
+  "name": "isolator",
+  "version": "1.0.0",
+  "description": "",
+  "main": "server.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1",
+    "start": "node server.js"
+  },
+  "engines": {
+    "node": "16.8.0",
+    "npm": "10.1.0"
+  },
+  "keywords": [],
+  "author": "",
+  "license": "ISC",
+  "dependencies": {
+    "express": "^4.18.2",
+    "jsdom": "^23.0.1",
+    "node-fetch": "^3.3.2",
+    "swagger-jsdoc": "^6.2.8",
+    "swagger-ui-express": "^5.0.0",
+    "vm2": "^3.9.19"
+  }
+}

server.js

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+const express = require("express");
+const bodyParser = require("body-parser");
+const { VM } = require("vm2");
+const { JSDOM } = require("jsdom");
+
+const app = express();
+const port = 5000;
+
+app.use(bodyParser.json());
+
+app.use((req, res, next) => {
+  res.header("Access-Control-Allow-Origin", "*");
+  res.header(
+    "Access-Control-Allow-Headers",
+    "Origin, X-Requested-With, Content-Type, Accept"
+  );
+  next();
+});
+
+const TIMEOUT_MS = 5000; // Set timeout to 5000 milliseconds (5 seconds)
+
+async function executeUserCode(code, requestObject, timeout = TIMEOUT_MS) {
+  const logs = [];
+
+  const States = {
+    SUCCESS: "SUCCESS",
+    NOT_A_FUNCTION: "NOT_A_FUNCTION",
+    SCRIPT_ERROR: "ERROR",
+    TIMEOUT: "TIMEOUT",
+  };
+
+  const HTTP_STATUS_CODES = {
+    OK: 200,
+    BAD_REQUEST: 400,
+    UNAUTHORIZED: 401,
+    FORBIDDEN: 403,
+    NOT_FOUND: 404,
+    INTERNAL_SERVER_ERROR: 500,
+    BAD_GATEWAY: 502,
+    SERVICE_UNAVAILABLE: 503,
+    GATEWAY_TIMEOUT: 504,
+  };
+
+  const Response = (
+    body = "",
+    headers = {},
+    status = HTTP_STATUS_CODES.OK
+  ) => ({
+    body,
+    status,
+    headers,
+  });
+
+  const JsonResponse = (
+    body = {},
+    headers = {},
+    status = HTTP_STATUS_CODES.OK
+  ) => ({
+    status,
+    body: JSON.stringify(body),
+    headers: {
+      "Content-Type": "application/json",
+      ...headers,
+    },
+  });
+
+  const HtmlResponse = (
+    body = "",
+    headers = {},
+    status = HTTP_STATUS_CODES.OK
+  ) => ({
+    status,
+    body,
+    headers: {
+      "Content-Type": "text/html",
+      ...headers,
+    },
+  });
+
+  const TextResponse = (
+    body = "",
+    headers = {},
+    status = HTTP_STATUS_CODES.OK
+  ) => ({
+    status,
+    body,
+    headers: {
+      "Content-Type": "text/plain",
+      ...headers,
+    },
+  });
+
+  const Result = (state, result) => {
+    console.log(`Status: ${state}`);
+    console.log(`Result: ${JSON.stringify(result, null, 2)}`);
+    console.log(`Logs: ${JSON.stringify(logs, null, 2)}`);
+    console.log(`\n`);
+
+    return {
+      state,
+      result,
+      logs,
+    };
+  };
+
+  // Dynamically import node-fetch
+  const fetch = await import("node-fetch").then((module) => module.default);
+
+  const vm = new VM({
+    timeout,
+    sandbox: {
+      fetch,
+      parseHTML: async (html) => {
+        const dom = new JSDOM(html);
+        return dom.window.document;
+      },
+      console: {
+        log: (...args) => {
+          logs.push(args);
+          console.log(...args);
+        },
+        error: (...args) => {
+          logs.push(args);
+          console.error(...args);
+        },
+      },
+      requestObject,
+      HTTP_STATUS_CODES,
+      Response,
+      JsonResponse,
+      HtmlResponse,
+      TextResponse,
+    },
+    require: {
+      external: true,
+    },
+  });
+
+  try {
+    // If the user code is a function that needs to be invoked
+    const userFunction = vm.run(code);
+    if (typeof userFunction === "function") {
+      console.log(`Function: ${code}`);
+      let requestObjectString = JSON.stringify(requestObject, null, 2);
+      console.log(`Request: ${requestObjectString}`);
+
+      // Call the user function with request object
+      let result = await userFunction(requestObject);
+
+      return Result(States.SUCCESS, result);
+    } else {
+      return Result(States.NOT_A_FUNCTION, null);
+    }
+  } catch (err) {
+    if (err.message === "Script execution timed out.") {
+      return Result(States.TIMEOUT, null);
+    } else {
+      return Result(States.SCRIPT_ERROR, err.message || err);
+    }
+  }
+}
+
+app.post("/execute", async (req, res) => {
+  const { code, request } = req.body;
+
+  const timeout = req.query.timeout || TIMEOUT_MS;
+
+  const result = await executeUserCode(code, request, timeout);
+  res.send(result);
+});
+
+app.listen(port, () => {
+  console.log(`Server listening on port: ${port}`);
+});