Class: EmailAuthentication::Base

Inherits:
Object
  • Object
show all
Defined in:
lib/email-authentication/base.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#address ⇒ Object

Returns the value of attribute address.



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# File 'lib/email-authentication/base.rb', line 10

def address
  @address
end

#domain ⇒ Object

Returns the value of attribute domain.



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# File 'lib/email-authentication/base.rb', line 10

def domain
  @domain
end

#from ⇒ Object

Returns the value of attribute from.



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# File 'lib/email-authentication/base.rb', line 10

def from
  @from
end

#fromdomain ⇒ Object

Returns the value of attribute fromdomain.



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# File 'lib/email-authentication/base.rb', line 10

def fromdomain
  @fromdomain
end

#message ⇒ Object

Returns the value of attribute message.



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# File 'lib/email-authentication/base.rb', line 10

def message
  @message
end

#mx ⇒ Object

Returns the value of attribute mx.



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# File 'lib/email-authentication/base.rb', line 10

def mx
  @mx
end

#name ⇒ Object

Returns the value of attribute name.



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# File 'lib/email-authentication/base.rb', line 10

def name
  @name
end

Class Method Details

.check(address, from) ⇒ Object 



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# File 'lib/email-authentication/base.rb', line 14

def self.check(address,from)
  tmp=self.new
  return tmp.check(address,from)
end

Instance Method Details

#check(address, from) ⇒ Object

run all the checks



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# File 'lib/email-authentication/base.rb', line 120

def check(address,from)
  self.set_address(address,from)
  @message=[]
  puts "checking #{@address}"
  ['format','mx','smtp'].each { |cmd| 
      cmdstring="check_#{cmd}"
      res,msg= self.send(cmdstring)
       @flag=@flag && res
       @message << msg }
  [@flag,@message.join(',').to_s]
end

#check_format ⇒ Object

this needs work. Anyone who can improve the regex i would be happy to put in their changes see alsothe validate_email_format gem for rails



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# File 'lib/email-authentication/base.rb', line 28

def check_format
  @@email_regex = /^(([A-Za-z0-9]+_+)|([A-Za-z0-9]+\-+)|([A-Za-z0-9]+\.+)|([A-Za-z0-9]+\++))*[A-Z‌​a-z0-9]+@((\w+\-+)|(\w+\.))*\w{1,63}\.[a-zA-Z]{2,6}$/i
  res=(@address =~ @@email_regex)
  #puts " res is #{res}"
  if res
    [true,"format ok"]
  else
    [false,"format failed"]
  end
end

#check_mx ⇒ Object

check the mx domain



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# File 'lib/email-authentication/base.rb', line 44

def check_mx
  domain=self.address.split('@')
  @domain = domain[1]
  @name=domain[0]
  #puts "domain is #{domain}"
  flag=false
  if @domain!=nil
        begin
         ret = self.resolver.query(@domain, Types.MX)
          if ret.answer!=nil and ret.rcode=='NOERROR'
            @mx=ret.answer.first.exchange.to_s if ret.answer!=nil 
            @mx=@mx.downcase
            msg= "mx record #{self.mx}"
            puts msg
            flag=true
          end
         rescue Dnsruby::NXDomain 
           msg="non existing domain #{@domain}"
           puts msg
         rescue Exception => e
              msg="exception #{e.message}"
              puts msg
         end
      
  else
    msg="nil domain"
  end
  # puts "ret is #{ret.inspect}"
  [flag,msg]
end

#check_smtp ⇒ Object

need to think about this and check the domain via telnet S: 220 smtp.example.com ESMTP Postfix C: HELO relay.example.org S: 250 Hello relay.example.org, I am glad to meet you C: MAIL FROM:<[email protected]> S: 250 Ok C: RCPT TO:<[email protected]> S: 250 Ok



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# File 'lib/email-authentication/base.rb', line 83

def check_smtp
   flag=false
   msg='smtp not ok'
   domain=self.from.split('@')
   @fromdomain = domain[1]
   if @mx.include?('google') or @mx.include?('live.com')
      # DO I Need to do this?
      flag=true
      msg="smtp not checked since google or live: #{@mx}"
   else
     begin 
       smtp = Net::Telnet::new("Host" => @mx, 'Port' => 25, "Telnetmode" => false, "Prompt" => /^\+OK/)
       c=""
       msg=c
       cmd="HELO " + @fromdomain
       smtp.cmd('String' => cmd, 'Match'=> /^250/) { |c| #print "CMD: #{cmd} RESP: #{c}" 
              msg << c}
       cmd="MAIL FROM:<" +@from+ ">"
       sleep 0.5
       smtp.cmd('String' => cmd, 'Match'=> /^250/ ) { |c| #print "CMD: #{cmd} RESP: #{c}" 
                msg << c}
       cmd="RCPT TO:<" +@address+ ">"
       sleep 0.5
       smtp.cmd('String' => cmd, 'Match'=> /^250/ ) { |c| print "CMD: #{cmd} RESP: #{c}" 
                        msg= "smtp test: #{cmd} resp: #{c}"
                        flag=true if c.include?('250') }
       cmd='quit'
       smtp.cmd('String' => cmd, 'Match'=> /^221/ ) { |c| print "CMD: #{cmd} RESP: #{c}"           }
     rescue Exception => e
       @flag=false
       msg= "smtp exception #{e.message}"
     end
   end if @mx!=nil
   
  [flag,msg]
end

#debug ⇒ Object 



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# File 'lib/email-authentication/base.rb', line 11

def debug
  true
end

#resolver ⇒ Object

cache the dns resolver



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# File 'lib/email-authentication/base.rb', line 39

def resolver
  @resolver = Dnsruby::Resolver.new if @resolver==nil
  @resolver
end

#set_address(address, from = "") ⇒ Object 



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# File 'lib/email-authentication/base.rb', line 18

def set_address(address,from="")
  raise "address nil" if address==nil
  raise "address blank" if address==""
  raise "from address blank" if from==""
  self.address=address.to_s
  self.from=from
  @flag=true
end