Class: X11::Auth

Inherits:
Object
  • Object
show all
Defined in:
lib/X11/auth.rb

Defined Under Namespace

Classes: AuthInfo

Constant Summary collapse

FAILED = 
0
SUCCESS = 
1
AUTHENTICATE = 
2
ADDRESS_TYPES = 
{
  0     => :Internet,
  1     => :DECnet,
  2     => :Chaos,
  252   => :LocalHost,
  253   => :Krb5Principal,
  254   => :Netname,
  256   => :Local,
  65535 => :Wild,
}

Instance Method Summary collapse

Constructor Details

#initialize(path = ENV['XAUTHORITY'] || ENV['HOME'] + "/.Xauthority") ⇒ Auth

Open an authority file, and create an object to handle it. The filename will be taken from the XAUTHORITY environment variable, if present, or ‘.Xauthority’ in the user’s home directory, or it may be overridden by an argument.



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# File 'lib/X11/auth.rb', line 30

def initialize(path = ENV['XAUTHORITY'] || ENV['HOME'] + "/.Xauthority")
  @file = File.open(path)
end

Instance Method Details

#get_by_hostname(host, family, display_id) ⇒ Object

Get authentication data for a connection of type family to display display_id on host. If family is ‘Internet’, the host will be translated into an appropriate address by gethostbyname(). If no data is found, returns nil



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# File 'lib/X11/auth.rb', line 37

def get_by_hostname(host, family, display_id)
  host = `hostname`.chomp if host == 'localhost' or host == '127.0.0.1' or host.nil?
  # address = TCPSocket.gethostbyname(host) if family == :Internet # this line does nothing for now

  auth_data = nil

  # with each entry from XAuthority file
  until @file.eof?
    r = read()
    auth_data = r if r.display.empty? || display_id.to_i == r.display.to_i
  end

  reset
  return auth_data
end

#read ⇒ Object

returns one entry from Xauthority file



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# File 'lib/X11/auth.rb', line 54

def read
  auth_info = [] << ADDRESS_TYPES[ @file.read(2).unpack1('n') ]

  4.times do
    length = @file.read(2).unpack1('n')
    auth_info << @file.read(length)
  end
  AuthInfo[*auth_info]
end

#reset ⇒ Object 



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# File 'lib/X11/auth.rb', line 64

def reset = @file.seek(0, IO::SEEK_SET)