Added Argument Error Handling

tools/exploit/pattern_create.rb

@@ -2,7 +2,7 @@
 #
 # $Id$
 # $Revision$
-
+#
 msfbase = __FILE__
 while File.symlink?(msfbase)
   msfbase = File.expand_path(File.readlink(msfbase), File.dirname(msfbase))
@@ -41,6 +41,8 @@ module PatternCreate
 
       if options.empty?
         raise OptionParser::MissingArgument, 'No options set, try -h for usage'
+      elsif options[:length].blank? && options[:sets]
+        raise OptionParser::MissingArgument, '-l <length> is required'
       end
 
       options[:sets] = nil unless options[:sets]
@@ -63,7 +65,6 @@ class Driver
       pattern = Rex::Text.pattern_create(@opts[:length], @opts[:sets])
       puts pattern
     end
-
   end
 end
 
@@ -77,4 +78,3 @@ if __FILE__ == $PROGRAM_NAME
     $stderr.puts "[*] If necessary, please refer to framework.log for more details."
   end
 end
-