Class: Sendmail

Inherits:
Object show all
Defined in:
lib/sendmail.rb

Constant Summary collapse

MAIL_FILE = 
Pathname.new(',mail')

Instance Method Summary collapse

Instance Method Details

#check_mail_options(options) ⇒ Object

Raises:

  • (ArgumentError) 


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# File 'lib/sendmail.rb', line 110

def check_mail_options ( options )
  raise ArgumentError, 'No recipents' if options.to.empty?
  raise ArgumentError, 'No mail server' if options.server.nil?
  raise ArgumentError, 'No mail subject' if options.header[:Subject].nil?
end

#parse_mail_options(*args) ⇒ Object 



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# File 'lib/sendmail.rb', line 16

def parse_mail_options ( *args )
  options = OpenStruct.new(
    :from => (defined? EMAIL)? EMAIL : ENV['EMAIL'],
    :from_name => (defined? FULLNAME)? FULLNAME : ENV['FULLNAME'],
    :to => [],
    :server => ENV['SMTPSERVER'] || 'localhost:25',
    :header => {},
    :body => STDIN,
    :charset => 'us-ascii',
    :encoding => '7bit'
  )
  string_args, hash_args = args.partition { |x| x.is_a?(String) }
  hash_args.each do |hash|
    raise ArgumentError, "Bad argument #{hash}" unless hash.is_a?(Hash)
    if hash[:header].is_a? String
      options.header.merge! YAML.load(hash[:header]).symbolize_keys
      hash.delete :header
    end
    if hash[:subject]
      options.header[:Subject] = hash[:subject]
      hash.delete :subject
    end
    hash.each do |k,v|
      x = options.send(k)
      case x
      when Hash  then v.each { |kk, vv| x[kk.to_sym] = vv }
      when Array then x.concat v
      else options.send("#{k}=", v)
      end
    end
  end
  OptionParser.new do |opts|
    opts.separator ''
    opts.on('-b', '--body FILE', 'Choose a file for the mail body') do |aFile|
	options.body = File.open(aFile)
    end
    opts.on('-f', '--mail-from NAME <EMAIL>', 'Choose the From address') do |aString|
	options.from = aString
    end
    opts.on('-t', '--mail-to NAME', 'Choose a recipient') do |aString|
	options.to << aString
    end
    opts.on('-s', '--server NAME:PORT', 'Choose a mail server') do |aString|
	options.server, options.port = aString.split(/:/)
      options.port ||= 25
    end
    opts.on('-S', '--subject NAME', 'Choose your mail subject') do |aString|
	options.header[:Subject] = aString.sub(/\.?$/, '.')
    end
    opts.on('--[no-]sign', 'Sign the message with gpg') do |signed|
	options.signed = signed
    end
    opts.on('--passphrase FILE', 'the passphrase file') do |aFile|
	options.pass = Pathname.new(aFile)
    end
    opts.on('-a', '--[no-]confirm', 'Ask a confirmation before sending') do |confirm|
      options.confirm = confirm
    end
    opts.on('--comment STRING', 'Choose a comment for GPG') do |aComment|
      options.comment = aComment
    end
    opts.on('--header STRING', 'Add some header fields (Yaml syntax)') do |s|
      options.header.merge! YAML.load(s)
    end
    opts.on('-m', '--[no-]mime', 'Choose the MIME protocol') do |mime|
      options.mime = mime
    end
    opts.on('--charset STRING',
            'Choose a charset for the encoding') do |aCharset|
      options.charset = aCharset
    end
    opts.on('--encoding STRING',
            'Choose an encoding') do |anEncoding|
      options.encoding = anEncoding
    end
    opts.on_tail('-h', '--help', 'Show this message') do
	puts opts
	exit
    end
  end.parse!(string_args)
  options.header[:To] = (options.header[:To] || options.to).join(', ')
  from = options.header[:From] || options.from
  if from.to_s =~ /<(.*)>/
    options.header[:From] = from
    options.from = $1
  else
    options.header[:From] = "#{options.from_name}  <#{from}>"
    options.from = from
  end
  check_mail_options(options)
  options
end

#sendmail(*args) ⇒ Object

Mail.



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# File 'lib/sendmail.rb', line 119

def sendmail ( *args )

  body, opts = nil, nil
  if MAIL_FILE.exist?
    STDERR.puts "Using the cache file #{MAIL_FILE}"
    MAIL_FILE.open do |mail_file|
      opts = YAML::chop_header(mail_file)
      body = mail_file.read
    end
  else
    opts = parse_mail_options(*args)
    body = (opts.body.nil?)? '' : opts.body.read
  end
  opts.header.symbolize_keys!
  server, port = opts.server.split(/:/)
  port ||= 25
  to = opts.header[:To]
  to = to.join(', ') if to.is_a? Array
  STDERR.puts "To: #{to.inspect}"
  STDERR.puts "Smtp Server: #{server}"

  #
  # confirm the user
  #
  if opts.confirm
    raise 'HighLine is unavailable' unless defined? HighLine
    question = %Q[
      |Send a mail, with this subject: #{opts.header[:Subject]}
      |  to #{to}
      |  from #{opts.header[:From]}
      |  #{(opts.signed)? 'signed by ' + opts.from : 'not signed !'}
      |Are you sure? (y/n)].head_cut!
    raise 'Aborting' unless HighLine.new.agree question, true
  end

  require 'net/smtp'
  Net::SMTP.start(server, port) do |smtp|
    smtp.open_message_stream(opts.from, opts.to) do |f|
      f.print "From: #{opts.header[:From]}\n"
      f.print "To: #{to}\n"
      f.print "Subject: #{opts.header[:Subject]}\n"
      opts.header.each do |k, v|
        next if [:From, :To, :Subject].include? k
        k = $1 if k.to_s =~ /^"(.*)"$/
        f.print "#{k}: #{v}\n"
      end
      if opts.signed
        TempPath.new do |mail_body|
          mail_body.open('w') do |out|
            if opts.mime
              out.puts "
                |Content-Type: text/plain; charset=\"#{opts.charset}\"
                |Content-Transfer-Encoding: #{opts.encoding}
                |
                |".head_cut!
            end
            out.print body
          end
          f.print sign_wrap(opts, mail_body)
        end
      else
        f.print "\n" + body
      end
    end
  end
end

#sign_wrap(opts, body) ⇒ Object 



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# File 'lib/sendmail.rb', line 193

def sign_wrap ( opts, body )
  id = "===============Vcs#{new_id 10}==" if opts.mime

  TempPath.new do |tmp_name|
    tmp_name.open('w') do |tmp|
      if opts.mime
        tmp.print %Q[
          |MIME-Version: 1.0
          |Content-Type: multipart/signed; micalg=pgp-sha1;
          | protocol="application/pgp-signature";
          | boundary="#{id}";
          | charset="#{opts.charset}"
          |Content-Transfer-Encoding: #{opts.encoding}
          |
          |This is an OpenPGP/MIME signed message (RFC 2440 and 3156)
          |--#{id}
          |].head_cut!

        tmp.print body.read

        tmp.print %Q[
          |
          |--#{id}
          |Content-Type: application/pgp-signature; name="signature.asc"
          |Content-Description: OpenPGP digital signature
          |Content-Disposition: attachment; filename="signature.asc"
          |
          |].head_cut!
      end
  
      TempPath.new do |tmp_out|
        pid = fork do
          cmd = %w[ gpg --status-fd 2 --sign --textmode --armor
                        --digest-algo sha1 --no-use-agent -u ]
          cmd << "<#{opts.from}>"
          cmd << ((opts.mime)? '--detach-sign' : '--clearsign')
          cmd += [ '--output', tmp_out ]
          if opts.pass
            cmd += [ '--no-tty', '--batch',
                     '--passphrase-fd', opts.pass.open.to_i.to_s ]
          end
          cmd += [ '--comment', "'#{opts.comment}'" ] if opts.comment
          STDIN.reopen(body.open)
          exec(*cmd)
        end
        Process.waitpid pid

        tmp.print tmp_out.read
        tmp.puts "\n--#{id}--" if opts.mime
      end
    end

    return tmp_name.read
  end
end