From 2c7b35193c2ae3acdf6edc1906bec65e6c5b5cef Mon Sep 17 00:00:00 2001
From: HD Moore <hd_moore@rapid7.com>
Date: Thu, 8 Dec 2005 18:26:38 +0000
Subject: [PATCH] Sanity checks for version and pack/unpack

git-svn-id: file:///home/svn/incoming/trunk@3196 4d416f70-5f16-0410-b530-b9f4589650da
---
 lib/msf/core.rb   |  5 ++++-
 lib/msf/sanity.rb | 23 +++++++++++++++++++++++
 2 files changed, 27 insertions(+), 1 deletion(-)
 create mode 100644 lib/msf/sanity.rb

diff --git a/lib/msf/core.rb b/lib/msf/core.rb
index 477f906256..94092d7b81 100644
--- a/lib/msf/core.rb
+++ b/lib/msf/core.rb
@@ -9,7 +9,10 @@
 #
 ###
 
-# framework-core depends on Rex
+# Sanity check this version of ruby
+require 'msf/sanity'
+
+# The framework-core depends on Rex
 require 'rex'
 require 'rex/ui'
 
diff --git a/lib/msf/sanity.rb b/lib/msf/sanity.rb
new file mode 100644
index 0000000000..2b25e12338
--- /dev/null
+++ b/lib/msf/sanity.rb
@@ -0,0 +1,23 @@
+#
+# 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 1.8.0 as the minimal supported version
+if (RUBY_VERSION =~ /^1\.[0-7]\./)
+	puts "*** This version of ruby is not supported, please upgrade to 1.8.3+"
+	exit(0)
+end