Class: ActionMailer::Base

Inherits:
Object
  • Object
show all
Defined in:
lib/actionmailer_x509.rb

Overview

:nodoc:

Direct Known Subclasses

Notifier

Constant Summary collapse

@@default_x509_sign = 
false
@@default_x509_crypt =

not used, for later.

false
@@default_x509_cert = 
nil
@@default_x509_key = 
nil
@@default_x509_sign_method = 
:smime
@@default_x509_crypt_method =

not used, for later.

:smime
@@default_x509_passphrase = 
nil

Instance Method Summary collapse

Instance Method Details

#initialize_with_sign(method_name, *parameters) ⇒ Object

We replace the create! methods and run a new method if signing is required



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# File 'lib/actionmailer_x509.rb', line 67

def initialize_with_sign(method_name, *parameters)
  mail = initialize_without_sign(method_name, *parameters)

  x509_initvar()

  # If we need to sign the outgoing mail.
  if should_sign?
    if logger
      logger.debug("actionmailer_x509: We should sign the mail with #{@x509_sign_method} method.")
    end
    __send__("x509_sign_#{@x509_sign_method}", mail)
  end

end

#x509_crypt_smime(mail) ⇒ Object

X509 SMIME crypting



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# File 'lib/actionmailer_x509.rb', line 152

def x509_crypt_smime(mail)
  logger.debug("X509 SMIME crypting")
end

#x509_sign_smime(mail) ⇒ Object

X509 SMIME signing



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# File 'lib/actionmailer_x509.rb', line 84

def x509_sign_smime(mail)
  if logger
    logger.debug("actionmailer_x509: X509 SMIME signing with cert #{@x509_cert} and key #{@x509_key}")
  end

  # We should set content_id, otherwise Mail will set content_id after signing and will broke sign
  mail.content_id ||= nil

  # We can remove the headers from the older mail we encapsulate.
  # Leaving allows to have the headers signed too within the encapsulated
  # email, but MUAs make no use of them... :(
  #
  # mail.subject = nil
  # mail.to = nil
  # mail.cc = nil
  # mail.from = nil
  # mail.date = nil
  # headers.each { |k, v| mail[k] = nil }
  # mail['Content-Type'] = 'text/plain'
  # mail.mime_version = nil

  # We load certificate and private key
  cert = OpenSSL::X509::Certificate.new( File::read(@x509_cert) )
  prv_key = OpenSSL::PKey::RSA.new( File::read(@x509_key), @x509_passphrase)

  begin
    # Sign the mail
    # NOTE: the one following line is the slowest part of this code, signing is sloooow
    p7sign = OpenSSL::PKCS7.sign(cert,prv_key,mail.encoded, [], OpenSSL::PKCS7::DETACHED)
    smime0 = OpenSSL::PKCS7::write_smime(p7sign)

    # Adding the signature part to the older mail
    newm = Mail.new(smime0)

    # We need to overwrite the content-type of the mail so MUA notices this is a signed mail
#        newm.content_type = 'multipart/signed; protocol="application/x-pkcs7-signature"; micalg=sha1; '
     newm.delivery_method(mail.delivery_method.class, mail.delivery_method.settings)
     newm.subject = mail.subject
     newm.to = mail.to
     newm.cc = mail.cc
     newm.from = mail.from
     newm.mime_version = mail.mime_version
     newm.date = mail.date
#        newm.body = "This is an S/MIME signed message\n"
#        headers.each { |k, v| m[k] = v } # that does nothing in general

    # NOTE: We can not use this as we need a B64 encoded signature, and no
    # methods provides it within the Ruby OpenSSL library... :(
    #
    # We add the signature
    # signature = Mail.new
    # signature.mime_version = '1.0'
    # signature['Content-Type'] = 'application/x-pkcs7-mime; smime-type=signed-data; name="smime.p7m"'
    # signature['Content-Transfer-Encoding'] = 'base64'
    # signature['Content-Disposition']  = 'attachment; filename="smime.p7m"'
    # signature.body = p7sign.to_s
    # newm.parts << signature

    @_message = newm
  rescue Exception => detail
    logger.error("Error while SMIME signing the mail : #{detail}")
  end

  ## logger.debug("x509_sign_smime, resulted email\n-------------( test X509 )----------\n#{m.encoded}\n-------------( test X509 )----------")

end