RHIT Class Registration

reg.rb

#!/usr/bin/ruby

# INSTALL: gem install faraday
require 'faraday'

Faraday::Utils.default_params_encoder = Faraday::FlatParamsEncoder

username = ''
password = ''
term = ''
pin = ''
crn = [] << 0000 << 0000 << 0000 << 0000

class RegisterRobot
  def initialize(username, password, term, pin, crn)
    @username = username
    @password = password
    @term = term
    @pin = pin
    @crn = crn
  end

  # Log into the Banner
  def login
    res = @conn.post do |req|
      req.url '/BanSS/twbkwbis.P_ValLogin'
      req.params['sid'] = @username
      req.params['PIN'] = @password
      req.headers['Cookie'] = 'TESTID=set'
    end

    if res.body.include?('Invalid login') || res.body.include?('Error occurred during logon') || res.body.include?('Authorization Failure')
      raise '[ERROR] Username and password do not match.'
    end

    @sessid = res.headers['Set-Cookie']
  end

  # Select term
  def select_term
    res = @conn.post do |req|
      req.url '/BanSS/bwskfreg.P_AltPin'
      req.params['term_in'] = @term
      req.headers['Cookie'] = 'TESTID=set; ' + @sessid
    end

    if !res.body.include?('Registration PIN Verification')
      raise '[ERROR] Term is incorrect.'
    end
  end

  # Enter PIN
  def enter_pin
    res = @conn.post do |req|
      req.url '/BanSS/bwskfreg.P_CheckAltPin'
      req.params['pin'] = @pin
      req.headers['Cookie'] = 'TESTID=set; ' + @sessid
    end

    if res.body.include? 'Authorization Failure - Invalid Alternate PIN.'
      raise '[ERROR] PIN is incorrect.'
    end
  end

  # Register classes
  def register
    res = @conn.post do |req|
      req.url '/BanSS/bwckcoms.P_Regs'
      req.params['term_in'] = @term
      req.params['RSTS_IN'] = ['DUMMY'] + ['RW'] * @crn.size
      req.params['assoc_term_in'] = ['DUMMY'] + [''] * @crn.size
      req.params['CRN_IN'] = ['DUMMY'] + @crn
      req.params['start_date_in'] = ['DUMMY'] + [''] * @crn.size
      req.params['end_date_in'] = ['DUMMY'] + [''] * @crn.size
      req.params['SUBJ'] = 'DUMMY'
      req.params['CRSE'] = 'DUMMY'
      req.params['SEC'] = 'DUMMY'
      req.params['LEVL'] = 'DUMMY'
      req.params['CRED'] = 'DUMMY'
      req.params['GMOD'] = 'DUMMY'
      req.params['TITLE'] = 'DUMMY'
      req.params['MESG'] = 'DUMMY'
      req.params['REG_BTN'] = ['DUMMY', 'Submit Changes']
      req.params['regs_row'] = '0'
      req.params['wait_row'] = '0'
      req.params['add_row'] = @crn.size
      req.headers['Cookie'] = 'TESTID=set; ' + @sessid
    end

    if res.body.include? 'Your Faculty, Advisor or Administrative Staff are reviewing your registration record at this time.'
      puts '[INFO] The gate is not open.'

      # Try again
      register
    else
      puts '[INFO] Done.'
    end
  end

  def run
    @conn = Faraday.new(url: 'https://prod11gbss8.rose-hulman.edu')
    login
    select_term
    enter_pin
    register
  end
end

robot = RegisterRobot.new(username, password, term, pin, crn)
robot.run