Method: Wmap::UrlCrawler::AdwareTag#get_ver

Defined in:
lib/wmap/url_crawler/adware_tag.rb

#get_ver(url, tag) ⇒ Object

Search the url payload for known tag version identifier. If found return a string, else empty string.



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# File 'lib/wmap/url_crawler/adware_tag.rb', line 210

def get_ver(url,tag)
  puts "Search and return tag version within the url payload: #{url}, #{tag}" if @verbose
  tag_ver=""
  doc = open_page(url)
  case tag
  when "utag.js"          # sample: ...,"code_release_version":"cb20190312032612",...
    doc.text.each_line do |line|
      my_line = line.downcase
      if my_line.include?("code_release_version")
        puts "Extract tag version from line: #{my_line}" if @verbose
        m = my_line.match(/\"code\_release\_version\"\:\"(?<ver>[a-z]+\d+)\"/)
        tag_ver = m[:ver]
        break
      end
    end
  when "analytics.js"         # sample #1:   ga('create', 'UA-19175804-2', 'knopfdoubleday.com');
    doc.text.each_line do |line|
      my_line = line.downcase
      if my_line.include?("ga") && my_line.include?("create")   #sample #2: __gaTracker('create', 'UA-121313929-1', 'auto');
        puts "Extract tag version from line: #{my_line}" if @verbose
        m = my_line.match(/[\'|\"]create[\'|\"]\s*\,\s*[\'|\"](?<ver>\w+\-\d+\-\d+)[\'|\"]\s*\,/)
        tag_ver = m[:ver]
        break
      end
    end
  when "ga.js"
    doc.text.each_line do |line|
      my_line = line.downcase
      puts my_line if @verbose
      if my_line.include?("push") && my_line.include?("_setaccount")  # # sample #1:   _gaq.push(['_setAccount', 'UA-13205363-65']);
        m = my_line.match(/[\'|\"]\_setaccount[\'|\"]\s*\,\s*[\'|\"](?<ver>\w+\-\d+\-\d+)[\'|\"]/)
        tag_ver = m[:ver]
        break
      end
      if my_line.include?("_gettracker")  # sample #2: var pageTracker = _gat._getTracker("UA-12487327-1");
        puts "Extract tag version from line: #{my_line}" if @verbose
        m = my_line.match(/\_gettracker\s*\(\s*[\'|\"](?<ver>\w+\-\d+\-\d+)[\'|\"]/)
        tag_ver = m[:ver]
        break
      end

    end
  when "all.js"          # sample:    appId      : '749936668352954',
    doc.text.each_line do |line|
      my_line = line.downcase
      if my_line.include?("appid") && my_line.include?(":")
        puts "Extract tag version from line: #{my_line}" if @verbose
        m = my_line.match(/appid\s+\:\s+[\'|\"](?<ver>\d+)[\'|\"]\s*\,/)
        tag_ver = m[:ver]
        break
      end
    end

  else
    puts "Don't know how to locate Adware Tag version: #{tag}"
    # do nothing
  end
  doc = nil
  return tag_ver.upcase
rescue => ee
  puts "Exception on method #{__method__}: #{ee}: #{url} : #{tag}" if @verbose
  return tag_ver
end