metasploit-framework/lib/msf/sanity.rb

90 lines
3.0 KiB
Ruby
Raw Normal View History

#
# 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")
puts "*** This ruby build has a broken pack/unpack implementation! "
if (RUBY_PLATFORM =~ /darwin/)
puts " Apple shipped a broken version of ruby with the 10.4.x "
puts " release. Please install ruby from source, or use one of "
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]$/)
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\./)
puts "*** Ruby 1.9.x is not currently supported, you may experience significant"
puts " issues trying to use this version with the Metasploit Framework"
# 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
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