Corrosion

Titanium Networks main web proxy. Successor to Alloy

Installation:

npm i corrosion

Example:

const Corrosion = require('corrosion');
const proxy = new Corrosion();
const http = require('http')
http.createServer((req, res) => 
  proxy.request(req, res) // Request Proxy
).on('upgrade', (req, socket, head) => 
  proxy.upgrade(req, socket, head) // WebSocket Proxy
).listen(80);

Access a website by going to /prefix/gateway?url=URL

Much more in depth one is in the demo folder.

API:

Index

• config
  • prefix String - URL Prefix
  • title (Boolean / String) - Title used for HTML documents
  • ws Boolean - WebSocket rewriting
  • cookie Boolean - Request Cookies
  • codec String - URL encoding (base64, plain, xor).
  • requestMiddleware Array - Array of middleware functions for proxy request (Server).
  • responseMiddleware Array - Array of middleware functions for proxy response (Server).
  • standardMiddleware Boolean - Use the prebuilt middleware used by default (Server).

request

• request Request
• response Response

upgrade

• request Request
• socket Socket
• head Head

bundleScripts

Bundles scripts for client injection. Important when updating proxy.

Properties

• url
• html
• js
• css
• cookies
• config
• codec
• prefix

url

wrap

• val String
• config Configuration
  • base WHATWG URL
  • origin Location origin - Adds a location origin before the proxy url
  • flags Array - ['xhr'] => /service/xhr_/https%3A%2F%2Fexample.org/

unwrap

• val String
• config Configuration
  • origin Location origin - Required if a location origin starts before the proxy url
  • flags Boolean - Returns with both the URL and flags found { value: 'https://example.org', flags: ['xhr'], })
  • leftovers Boolean - Use any leftovers if any after the encoded proxy url

Properties

• regex Regex used to determine to rewrite the URL or not.

• prefix URL Prefix

• codec (base64, plain, xor)

js

process

• source JS script
• url URL for heading

iterate

• ast JS AST
• Callback Handler initated on AST node

createHead

• url URL for heading

createCallExperssion

• callee Acorn.js Node
• args Array

createArrayExpression

• elements Array

createIdentifier

• name Identifier name
• preventRewrite Prevent further rewrites

createLiteral

• value Literal value

css

process

• source CSS
• config Configuration
  • base WHATWG URL
  • origin Location origin
  • context CSS-Tree context

html

process

• source HTML Source
• config Configuration
  • document Determines of its a document or fragment for parsing
  • base WHATWG URL
  • origin Location origin

source

• processed Rewritten HTML
• config Configuration
  • document Determines of its a document or fragment for parsing

Properties

• map Map for attribute rewriting

cookies

encode

• input New (Cookie / Cookies)
• config Configuration
  • url WHATWG URL
  • domain Cookie Domain
  • secure Cookie Secure

decode

• store Encoded Cookies
• config Configuration
  • url WHATWG URL

codec

encode

decode

• str String

middleware

Middleware are functions that will be executed either before request or after response. These can alter the way a request is made or response is sent.

function(ctx) {r
  ctx.body; // (Request / Response) Body (Will return null if none)
  ctx.headers; // (Request / Response) Headers
  ctx.url; // WHATWG URL
  ctx.flags; // URL Flags
  ctx.origin; // Request origin
  ctx.method; // Request method
  ctx.rewrite; // Corrosion object
  ctx.statusCode; // Response status (Only available on response)
  ctx.agent; // HTTP agent
  ctx.address; // Address used to make remote request
  ctx.clientSocket; // Node.js Server Socket (Only available on upgrade)
  ctx.clientRequest; // Node.js Server Request
  ctx.clientResponse; // Node.js Server Response
  ctx.remoteResponse; // Node.js Remote Response (Only available on response)
};

Default middleware

• Request

  • requestHeaders

• Response

  • responseHeaders
  • decompress
  • rewriteBody

Available Middleware

address (Request)

• arr Array of IP addresses to use in request

const Corrosion = require('corrosion');
const proxy = new Corrosion({
  requestMiddleware: [
    Corrosion.middleware.address([ 
      0.0.0.0, 
      0.0.0.0 
    ]),  
  ],
});

blacklist

• arr Array of hostnames to block clients from seeing
• page Block page

const Corrosion = require('corrosion');
const proxy = new Corrosion({
  requestMiddleware: [
    Corrosion.middleware.blacklist([ 
      'example.org',
      'example.com',
    ], 'Page is blocked'),  
  ],
});

Todo:

• Inject header much more property in JS rewriter (because of import statements)