mirror of
https://github.com/vidarh/ruby-x11
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72 lines
2.2 KiB
Ruby
72 lines
2.2 KiB
Ruby
# This module is an approximate ruby replacement for the libXau C library and the
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# xauth(1) program. It reads and interprets the files (usually '~/.Xauthority') that
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# hold authorization data used in connecting to X servers. Since it was written mainly
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# for the use of X11::Protocol, its functionality is currently restricted to reading,
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# not writing, of these files.
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module X11
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class Auth
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FAILED = 0
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AUTHENTICATE = 1
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SUCCESS = 2
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ADDRESS_TYPES = {
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256 => :Local,
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65535 => :Wild,
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254 => :Netname,
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253 => :Krb5Principal,
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252 => :LocalHost,
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0 => :Internet,
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1 => :DECnet,
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2 => :Chaos
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}
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AuthInfo = Struct.new :family, :address, :display, :auth_name, :auth_data
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# Open an authority file, and create an object to handle it.
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# The filename will be taken from the XAUTHORITY environment variable,
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# if present, or '.Xauthority' in the user's home directory, or it may be overridden
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# by an argument.
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def initialize(path = ENV['XAUTHORITY'] || ENV['HOME'] + "/Xauthority")
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@file = File.open(path)
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end
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# Get authentication data for a connection of type family to display display_id on host.
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# If family is 'Internet', the host will be translated into an appropriate address by gethostbyname().
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# If no data is found, returns nil
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def get_by_hostname(host, family, display_id)
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host = `hostname`.chomp if host == 'localhost' or host == '127.0.0.1'
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address = TCPSocket.gethostbyname(host) if family == :Internet # this line does nothing for now
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auth_data = nil
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displays.each do |entry|
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auth_data = entry if display_id.to_i == entry.display.to_i
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end
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reset
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return auth_data
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end
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# returns one entry from Xauthority file
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def read
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auth_info = []
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auth_info << ADDRESS_TYPES[ @file.read(2).unpack('n').first ]
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4.times { length = @file.read(2).unpack('n').first; auth_info << @file.read(length).first }
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AuthInfo[*auth_info]
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end
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# returns all entries from XAuthority file
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def displays
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collection = []
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collection << read while !@file.eof?
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reset
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collection
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end
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def reset
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@file.seek(0, IO::SEEK_SET)
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end
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end
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end
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