Form-parser

form-reader is a part of a bigger project aiming to support Unofficial Facebook Graph. It allows you to submit your custom data to every facebook form.

Installation

npm i form-reader

Usage

You can login facebook with your own account get a valid cookie for later use. Notice: won't work with 2-factor authen accounts.

const FormReader = require('form-reader')
const formReader = new FormReader({
  willSendRequest: {
    headers: {
      'User-Agent': 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.99 Safari/537.36',
    },
  },
})
const loginURL = 'https://mbasic.facebook.com/'
const { headers } = await this.formReader.pipeline([
  {
    formAt: 0,
    willSubmit: (requiredFields, submitFields) => ({
      ...requiredFields,
      login: submitFields.login,
      email: <YOUR_USER_NAME>,
      pass: <YOUR PASSWORD>,
    }),
  },
]).startWith(loginURL)
const cookie = headers['set-cookie'].map(c => c.split(';')[0]).join(';')

After having a valid cookie, you can do lots of awesome stuff. for example post a message to your facebook

const FormReader = require('form-reader')
const formReader = new FormReader({
  willSendRequest: {
    headers: {
      'User-Agent': 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.99 Safari/537.36',
      cookie: <YOUR_VALID_COOKIE>
    },
  },
})
await this.formReader.pipeline([
  {
  formAt: 1,
  willSubmit: (requiredFields, submitFields) => ({
    ...requiredFields,
    xc_message: <YOUR_MESSAGE>,
    view_post: submitFields.view_post,
  }),
  },
]).startWith('https://mbasic.facebook.com/')

Initialize

const formReader = new FormReader(options)

options is an object, it contains properties:

• useCache - use your url to cache http request (type: bool, default: false)
• willSendRequest - pass to option of request (type: <object|function>, default: {})

Pipeline

You can create a sequence of form submits by using pipeline

formReader.pipeline([stage1, stage2, ...]).start(URL)

a stage must contains properties

• formAt - position of form (type: int, default: 0)
• willSubmit - provide all fields of form in requiredFields and posible submit actions in submitFields
• willSendRequest - provide response from previous request, which help you to decide url, headers, ... of next stage
• nextURL - provide response from previous request, has to return a url for next step

Transpoter

If you want to keep the same headers of a previous step to crawle data from other page then using

  const transporter = formReader.getTransporter(URL)
  const response = await transporter.get()