metasploit-framework/lib/msf/sanity.rb

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#
# Provides some sanity checks against the ruby build and version
#
# Check for the broken pack/unpack in OS X 10.4.x
if ([1].pack('n') == "\x01\x00")
$stderr.puts "*** This ruby build has a broken pack/unpack implementation! "
if (RUBY_PLATFORM =~ /darwin/)
$stderr.puts " Apple shipped a broken version of ruby with the 10.4.x "
$stderr.puts " release. Please install ruby from source, or use one of "
$stderr.puts " the free package managers to obtain a working ruby build."
end
exit(0)
end
# Check for ruby 1.8.2 as the minimal supported version
if (RUBY_VERSION =~ /^1\.[0-7]\./ or RUBY_VERSION =~ /^1\.8\.[0-1]$/)
$stderr.puts "*** This version of ruby is not supported, please upgrade to 1.8.2+"
exit(0)
end
# Check for ruby 1.9.0 and throw a big nasty warning
if (RUBY_VERSION =~ /^1\.9\.0/)
$stderr.puts "*** Ruby 1.9.0 is not supported, please upgrade to Ruby 1.9.1 or newer."
exit(0)
end
if(RUBY_VERSION =~ /^1\.9\./)
# Force binary encoding for Ruby versions that support it
if(Object.const_defined?('Encoding') and Encoding.respond_to?('default_external='))
Encoding.default_external = Encoding.default_internal = "binary"
end
# Disable: See #1731
=begin
# Overload Object.extend() to do an include(), this fixes a memory leak in extend() on 1.9
# This trick doesn't work for anonymous modules, so we pass those to super()
class ::Object
def extend(x)
if ! x.name or x.name.empty?
# $stderr.puts "Extending #{self.class} normally with #{x}"
super(x)
else
# $stderr.puts "Extending #{self.class} via include with #{x}"
instance_eval("class << self; include #{x}; end")
end
end
end
=end
end
if(RUBY_PLATFORM == 'java')
require 'socket'
s = Socket.new(::Socket::AF_INET, ::Socket::SOCK_STREAM, ::Socket::IPPROTO_TCP)
if(not s.respond_to?('bind'))
$stderr.puts "*** JRuby will not be supported until the Socket API is complete"
$stderr.puts "*** Information: http://jira.codehaus.org/browse/JRUBY-2739"
trap Signal::list['INT'] do
Thread.main.raise Interrupt.new
end
end
end
# Check for OpenSSL and print a warning if it is not installed
begin
require 'openssl'
rescue ::LoadError
$stderr.puts "*** The ruby-openssl library is not installed, many features will be disabled!"
$stderr.puts "*** Examples: Meterpreter, SSL Sockets, SMB/NTLM Authentication, and more"
end
#
# Check for the ugly 1.8.7 short-named constants bug
#
class ConstBugTestA
Const = 'A'
def test
Const == 'A'
end
end
ConstBugTestC = ConstBugTestA.dup
class ConstBugTestB < ConstBugTestC
Const = 'B'
end
def ruby_187_const_bug
bugged = false
begin
ConstBugTestA.new.test()
ConstBugTestB.new.test()
rescue ::NameError
bugged = true
end
bugged
end
if(ruby_187_const_bug())
$stderr.puts ""
$stderr.puts "***********************************************************************"
$stderr.puts "*** *"
$stderr.puts "*** This version of the Ruby interpreter contains a serious bug *"
$stderr.puts "*** related to short-named constants, we strongly recommend that you *"
$stderr.puts "*** switch to a fixed version. Unfortunately, some Linux distros have *"
$stderr.puts "*** backported the buggy patch into 1.8.6, so you may need to contact *"
$stderr.puts "*** your vendor and ask them to review the URL below. *"
$stderr.puts "*** *"
$stderr.puts "*** Alternatively, you can download, build, and install the latest *"
$stderr.puts "*** stable snapshot of Ruby from the following URL: *"
$stderr.puts "*** - http://www.ruby-lang.org/ *"
$stderr.puts "*** *"
$stderr.puts "*** For more information, please see the following URL: *"
$stderr.puts "*** - https://bugs.launchpad.net/bugs/282302 *"
$stderr.puts "*** *"
$stderr.puts "***********************************************************************"
$stderr.puts ""
end