AOSP差分OTA中加入前後版MD5和版本號紀錄

--- build/tools/releasetools/ota_from_target_files
+++ build/tools/releasetools/ota_from_target_files
@@ -642,6 +642,15 @@ def LoadSystemFiles(z):
       out[fn] = common.File(fn, data)
   return out

+def GetMD5(path):
+    tp_file = open(path,"r")
+    if tp_file == False:
+        print("WARNING: cannot generate MD5".path)
+        return "NONE"
+    re_value = hashlib.md5(tp_file.read()).hexdigest()
+    tp_file.close()
+    del tp_file
+    return re_value

 def GetBuildProp(prop, info_dict):
   """Return the fingerprint of the build of a given target-files info_dict."""
@@ -665,6 +674,12 @@ def WriteIncrementalOTAPackage(target_zip, source_zip, output_zip):
                                          OPTIONS.source_info_dict),
               "post-timestamp": GetBuildProp("ro.build.date.utc",
                                              OPTIONS.target_info_dict),
+              "test-pre-version": GetBuildProp("ro.build.display.id",
+                                             OPTIONS.source_info_dict),
+              "test-pre-md5": GetMD5(OPTIONS.incremental_source),
+              "test-post-version": GetBuildProp("ro.build.display.id",
+                                             OPTIONS.target_info_dict),
+              "test-post-md5": GetMD5(OPTIONS.incremental_target)
               }

   device_specific = common.DeviceSpecificParams(
@@ -1095,6 +1110,7 @@ def main(argv):
           "build/target/product/security/testkey")
   else:
     print "unzipping source target-files..."
+    OPTIONS.incremental_target = args[0]
     OPTIONS.source_tmp, source_zip = common.UnzipTemp(OPTIONS.incremental_source)
     OPTIONS.target_info_dict = OPTIONS.info_dict
     OPTIONS.source_info_dict = common.LoadInfoDict(source_zip)