Class: PassiveDNS::BFK

Inherits:
PassiveDB show all
Defined in:
lib/passivedns/client/bfk.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(options = {}) ⇒ BFK

Returns a new instance of BFK.



20
21
22
23
 
# File 'lib/passivedns/client/bfk.rb', line 20

def initialize(options={})
  @debug = options[:debug] || false
    @base = options["URL"] || "http://www.bfk.de/bfk_dnslogger.html?query="
end

Instance Attribute Details

#debug ⇒ Object

Returns the value of attribute debug.



19
20
21
 
# File 'lib/passivedns/client/bfk.rb', line 19

def debug
  @debug
end

Class Method Details

.config_section_name ⇒ Object

override



11
12
13
 
# File 'lib/passivedns/client/bfk.rb', line 11

def self.config_section_name
  "bfk"
end

.name ⇒ Object

override



7
8
9
 
# File 'lib/passivedns/client/bfk.rb', line 7

def self.name
  "BFK.de"
end

.option_letter ⇒ Object

override



15
16
17
 
# File 'lib/passivedns/client/bfk.rb', line 15

def self.option_letter
  "b"
end

Instance Method Details

#lookup(label, limit = nil) ⇒ Object

override



57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
 
# File 'lib/passivedns/client/bfk.rb', line 57

def lookup(label, limit=nil)  
  $stderr.puts "DEBUG: #{self.class.name}.lookup(#{label})" if @debug
  Timeout::timeout(240) {
    t1 = Time.now
    open(
      @base+label,
      "User-Agent" => "Ruby/#{RUBY_VERSION} passivedns-client rubygem v#{PassiveDNS::Client::VERSION}"
    ) do |f|
      t2 = Time.now
      recs = parse(f.read,t2-t1)
        if limit
          recs[0,limit]
        else
          recs
        end
    end
  }
rescue Timeout::Error => e
  $stderr.puts "#{self.class.name} lookup timed out: #{label}"      
end

#parse(page, response_time) ⇒ Object 



25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
 
# File 'lib/passivedns/client/bfk.rb', line 25

def parse(page,response_time)
  line = page.unpack('C*').pack('U*').split(/<table/).grep(/ id=\"logger\"/)
  return [] unless line.length > 0
  line = line[0].gsub(/[\t\n]/,'').gsub(/<\/table.*/,'')
  rows = line.split(/<tr.*?>/)
  res = []
  rows.collect do |row|
    r = row.split(/<td>/).map{|x| x.gsub(/<.*?>/,'').gsub(/\&.*?;/,'')}[1,1000]
    if r and r[0] =~ /\w/
      # BFK includes the MX weight in the answer response. First, find the MX records, then dump the weight to present a consistent record name to the collecting array. Otherwise the other repositories will present the same answer and your results will become cluttered with duplicates.
      if r[1] == "MX" then
        # MX lines look like "5 mx.domain.tld", so split on the space and assign r[2] (:answer) to the latter part.
        #s = r[2].split(/\w/).map{|x| x}[1,1000]
        # r[2] = s[1]
        r[2] =~ /[0-9]+?\s(.+)/
        s=$1
        puts "DEBUG: == BFK: MX Parsing Strip: Answer: " + r[2] + " : mod: " + s if @debug
        r[2] = s
          
          ######### FIX BLANKS FOR MX
          
      end
      res << PDNSResult.new(self.class.name,response_time,r[0],r[2],r[1])
    end
  end
  res
rescue Exception => e
  $stderr.puts "#{self.class.name} Exception: #{e}"
  raise e
end