Land rapid7#7262, FLUSHALL support for redis/file_upload

Author: wvu

modules/auxiliary/scanner/redis/file_upload.rb

@@ -40,7 +40,8 @@ def initialize(info = {})
       [
         OptPath.new('LocalFile', [false, 'Local file to be uploaded']),
         OptString.new('RemoteFile', [false, 'Remote file path']),
-        OptBool.new('DISABLE_RDBCOMPRESSION', [true, 'Disable compression when saving if found to be enabled', true])
+        OptBool.new('DISABLE_RDBCOMPRESSION', [true, 'Disable compression when saving if found to be enabled', true]),
+        OptBool.new('FLUSHALL', [true, 'Run flushall to remove all redis data before saving', false])
       ]
     )
   end
@@ -83,6 +84,13 @@ def send_file(path, content)
       end
     end
 
+    if datastore['FLUSHALL']
+      data = redis_command('FLUSHALL')
+      unless data.include?('+OK')
+        print_warning("#{peer} -- failed to flushall(); continuing")
+      end
+    end
+
     # set a key in this db that contains our content
     # XXX: this does not work well (at all) if the content we are uploading is
     # multiline.  It also probably doesn't work well if the content isn't