metasploit-framework/lib/msf/sanity.rb

#
# 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

if(RUBY_VERSION == "1.8.7")
	$stderr.puts ""
	$stderr.puts "***********************************************************************"
	$stderr.puts "*** This version of the Ruby interpreter has significant problems, we *"
	$stderr.puts "*** strongly recommend that you switch to version 1.8.6 until these   *"
	$stderr.puts "*** issues have been corrected.                                       *"
	$stderr.puts "***********************************************************************"
	$stderr.puts ""
end