Use RWE/windows helpers when the corresponding driver is present

Fix error when calling decompress functionality using RWE helper

chipsec/helper/helpers.py

@@ -22,6 +22,6 @@
 from chipsec.helper.efi import *
 from chipsec.helper.linux import *
 from chipsec.helper.osx import *
-#from chipsec.helper.rwe import *
+from chipsec.helper.rwe import *
 from chipsec.helper.win import *
 

chipsec/helper/rwe/__init__.py

@@ -20,7 +20,9 @@
 #
 
 import platform, os
-if "windows" == platform.system().lower() and os.environ.has_key("USERWE"):
+if "windows" == platform.system().lower() and (os.path.isfile(os.path.join("C:\\Windows\\System32\\drivers\\RwDrv.sys")) or os.path.isfile(os.path.join(os.getcwd(), "win7_amd64\RwDrv.sys"))):
+    print "rwe"
     __all__ = [ "rwehelper" ]
 else:
+    print "no rwe"
     __all__ = [ ]

chipsec/helper/rwe/rwehelper.py

@@ -356,6 +356,9 @@ class RweHelper(Helper):
         if logger().VERBOSE: logger().log( "[helper] service control manager opened (handle = 0x%08x)" % hscm )
 
         driver_path = os.path.join( chipsec.file.get_main_dir(), "chipsec", "helper", "rwe", self.win_ver, DRIVER_FILE_NAME )
+        if not os.path.isfile( driver_path ):
+            driver_path = os.path.join("C:\\", "Windows","System32","drivers", DRIVER_FILE_NAME)
+            if logger().VERBOSE: logger().log( "[helper] Did not find local RWE driver. Trying %s" % driver_path )
         if os.path.isfile( driver_path ):
             self.driver_path = driver_path
             if logger().VERBOSE: logger().log( "[helper] driver path: '%s'" % os.path.abspath(self.driver_path) )
@@ -927,6 +930,48 @@ class RweHelper(Helper):
         logger().error( "[helper] Message Bus is not supported yet" )
         return None       
 
+    def get_tool_path( self, tool_type ):
+        tool_name, tool_pathdef = self.get_tool_info( tool_type )
+        tool_path = tool_pathdef
+
+        try:
+            import pkg_resources
+            tool_path = pkg_resources.resource_filename( '%s.%s' % (chipsec.file.TOOLS_DIR,self.os_system.lower()), tool_name )
+        except ImportError:
+            pass
+
+        if not os.path.isfile( tool_path ):
+            tool_path = os.path.join( tool_pathdef, tool_name )
+            if not os.path.isfile( tool_path ): logger().error( "Couldn't find %s" % tool_path )
+
+        return tool_path
+
+
+    def get_compression_tool_path( self, compression_type ):
+        return self.get_tool_path( compression_type )
+
+    #
+    # Decompress binary with OS specific tools
+    #
+    def decompress_file( self, CompressedFileName, OutputFileName, CompressionType ):
+        import subprocess
+        if (CompressionType == 0): # not compressed
+          shutil.copyfile(CompressedFileName, OutputFileName)
+        else:
+          exe = self.get_compression_tool_path( CompressionType )
+          if exe is None: return None 
+          try:
+            subprocess.call( [ exe, "-d", "-o", OutputFileName, CompressedFileName ], stdout=open(os.devnull, 'wb') )
+          except BaseException, msg:
+            logger().error( str(msg) )
+            if logger().DEBUG: logger().log_bad( traceback.format_exc() )
+            return None
+
+        return chipsec.file.read_file( OutputFileName )
+
+
+
+
     #
     # File system
     #

chipsec/helper/win/__init__.py

@@ -27,8 +27,9 @@
 #
 ##################################################################################
 
-import platform
-if "windows" == platform.system().lower():
+import platform, os
+
+if "windows" == platform.system().lower() and os.path.isfile(os.path.join(os.getcwd(), "win7_amd64\chipsec_hlpr.sys")):
     __all__ = [ "win32helper" ]
 else:
     __all__ = []

chipsec/helper/win/win32helper.py

@@ -353,6 +353,8 @@ class Win32Helper(Helper):
         if logger().VERBOSE: logger().log( "[helper] service control manager opened (handle = 0x%08x)" % hscm )
 
         driver_path = os.path.join( chipsec.file.get_main_dir(), "chipsec", "helper", "win", self.win_ver, DRIVER_FILE_NAME )
+        if not os.path.isfile( driver_path ):
+            driver_path = os.path.join("C:\\Windows\\System32\\drivers\\RwDrv.sys"
         if os.path.isfile( driver_path ):
             self.driver_path = driver_path
             if logger().VERBOSE: logger().log( "[helper] driver path: '%s'" % os.path.abspath(self.driver_path) )