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#--
# =============================================================================
# Copyright (c) 2004,2005 Jamis Buck (jamis@37signals.com)
# All rights reserved.
#
# This source file is distributed as part of the Net::SSH Secure Shell Client
# library for Ruby. This file (and the library as a whole) may be used only as
# allowed by either the BSD license, or the Ruby license (or, by association
# with the Ruby license, the GPL). See the "doc" subdirectory of the Net::SSH
# distribution for the texts of these licenses.
# -----------------------------------------------------------------------------
# net-ssh website : http://net-ssh.rubyforge.org
# project website: http://rubyforge.org/projects/net-ssh
# =============================================================================
#++
$:.unshift "#{File.dirname(__FILE__)}/../../lib"
require 'net/ssh/transport/algorithm-negotiator'
require 'net/ssh/transport/constants'
require 'net/ssh/util/buffer'
require 'test/unit'
class TC_AlgorithmNegotiator < Test::Unit::TestCase
include Net::SSH::Transport::Constants
class MockLogger; def debug?; false; end; end
class Buffers
def writer
Net::SSH::Util::WriterBuffer.new
end
end
class ScriptedSession
attr_reader :messages
attr_reader :host, :port
def initialize( *script )
@script = script
@messages = []
end
def wait_for_message
@script.shift
end
def send_message( msg )
@messages << msg.to_s
end
end
ALGORITHMS = {
:host_key => [ "A", "B" ],
:kex => [ "C", "D" ],
:encryption => [ "E", "F" ],
:hmac => [ "G", "H" ],
:compression => [ "I", "J" ],
:languages => [ "K", "L" ],
}
def reader( text )
Net::SSH::Util::ReaderBuffer.new( text )
end
def setup
logger = MockLogger.new
buffers = Buffers.new
@negotiator = Net::SSH::Transport::AlgorithmNegotiator.new( logger, ALGORITHMS, buffers )
end
def test_no_kexinit
session = ScriptedSession.new( [ -1, reader("") ] )
assert_raise( Net::SSH::Exception ) do
@negotiator.negotiate( session, {} )
end
end
def test_simple_exchange
session = ScriptedSession.new(
[ KEXINIT,
reader("1234567890123456" +
"\0\0\0\3C,D" +
"\0\0\0\3A,B" +
"\0\0\0\3E,F\0\0\0\3E,F" +
"\0\0\0\3G,H\0\0\0\3G,H" +
"\0\0\0\3I,J\0\0\0\3I,J" +
"\0\0\0\0\0\0\0\0\0\0\0\0\0") ]
)
result = @negotiator.negotiate( session, {} )
assert_equal "C", result.kex
assert_equal "A", result.host_key
assert_equal "E", result.encryption_c2s
assert_equal "E", result.encryption_s2c
assert_equal "G", result.mac_c2s
assert_equal "G", result.mac_s2c
assert_equal "I", result.compression_c2s
assert_equal "I", result.compression_s2c
assert_equal "", result.language_c2s
assert_equal "", result.language_s2c
assert_equal "1234567890123456\0\0\0\3C,D\0\0\0\3A,B\0\0\0\3E,F\0\0\0\3E,F\0\0\0\3G,H\0\0\0\3G,H\0\0\0\3I,J\0\0\0\3I,J\0\0\0\0\0\0\0\0\0\0\0\0\0", result.server_packet
assert_equal "\0\0\0\3C,D\0\0\0\3A,B\0\0\0\3E,F\0\0\0\3E,F\0\0\0\3G,H\0\0\0\3G,H\0\0\0\3I,J\0\0\0\3I,J\0\0\0\3K,L\0\0\0\3K,L\0\0\0\0\0", result.client_packet[17..-1]
end
def test_custom_exchange
session = ScriptedSession.new(
[ KEXINIT,
reader("1234567890123456" +
"\0\0\0\3C,D" +
"\0\0\0\3A,B" +
"\0\0\0\3E,F\0\0\0\3E,F" +
"\0\0\0\3G,H\0\0\0\3G,H" +
"\0\0\0\3I,J\0\0\0\3I,J" +
"\0\0\0\0\0\0\0\0\0\0\0\0\0") ]
)
result = @negotiator.negotiate( session,
:kex => "D",
:host_key => [ "B", "A" ] )
assert_equal "D", result.kex
assert_equal "B", result.host_key
assert_equal "E", result.encryption_c2s
assert_equal "E", result.encryption_s2c
assert_equal "G", result.mac_c2s
assert_equal "G", result.mac_s2c
assert_equal "I", result.compression_c2s
assert_equal "I", result.compression_s2c
assert_equal "", result.language_c2s
assert_equal "", result.language_s2c
end
def test_bad_algorithm
session = ScriptedSession.new(
[ KEXINIT,
reader("1234567890123456" +
"\0\0\0\3C,D" +
"\0\0\0\3A,B" +
"\0\0\0\3E,F\0\0\0\3E,F" +
"\0\0\0\3G,H\0\0\0\3G,H" +
"\0\0\0\3I,J\0\0\0\3I,J" +
"\0\0\0\0\0\0\0\0\0\0\0\0\0") ]
)
assert_raise( NotImplementedError ) do
@negotiator.negotiate( session, :kex => "K" )
end
end
def test_no_agree
session = ScriptedSession.new(
[ KEXINIT,
reader("1234567890123456" +
"\0\0\0\3C,D" +
"\0\0\0\3M,N" +
"\0\0\0\3E,F\0\0\0\3E,F" +
"\0\0\0\3G,H\0\0\0\3G,H" +
"\0\0\0\3I,J\0\0\0\3I,J" +
"\0\0\0\0\0\0\0\0\0\0\0\0\0") ]
)
assert_raise( Net::SSH::Exception ) do
@negotiator.negotiate( session, {} )
end
end
end
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