[DO NOT MERGE] Updating Security String to 2017-03-05 on lmp-dev

[android-x86/build.git] / tools / post_process_props.py

diff --git a/tools/post_process_props.py b/tools/post_process_props.py
index 5d1b350..030826d 100755 (executable)
--- a/tools/post_process_props.py
+++ b/tools/post_process_props.py
@@ -16,9 +16,13 @@
 
 import sys
 
-# See PROP_VALUE_MAX system_properties.h.
-# PROP_VALUE_MAX in system_properties.h includes the termination NUL,
-# so we decrease it by 1 here.
+# Usage: post_process_props.py file.prop [blacklist_key, ...]
+# Blacklisted keys are removed from the property file, if present
+
+# See PROP_NAME_MAX and PROP_VALUE_MAX system_properties.h.
+# The constants in system_properties.h includes the termination NUL,
+# so we decrease the values by 1 here.
+PROP_NAME_MAX = 31
 PROP_VALUE_MAX = 91
 
 # Put the modifications that you need to make into the /system/build.prop into this
@@ -56,6 +60,11 @@ def validate(prop):
                              "").startswith("eng")
   for key, value in buildprops.iteritems():
     # Check build properties' length.
+    if len(key) > PROP_NAME_MAX:
+      check_pass = False
+      sys.stderr.write("error: %s cannot exceed %d bytes: " %
+                       (key, PROP_NAME_MAX))
+      sys.stderr.write("%s (%d)\n" % (key, len(key)))
     if len(value) > PROP_VALUE_MAX:
       # If dev build, show a warning message, otherwise fail the
       # build with error message
@@ -82,8 +91,9 @@ class PropFile:
     for line in self.lines:
       if not line or line.startswith("#"):
         continue
-      key, value = line.split("=", 1)
-      props[key] = value
+      if "=" in line:
+        key, value = line.split("=", 1)
+        props[key] = value
     return props
 
   def get(self, name):
@@ -101,6 +111,10 @@ class PropFile:
         return
     self.lines.append(key + value)
 
+  def delete(self, name):
+    key = name + "="
+    self.lines = [ line for line in self.lines if not line.startswith(key) ]
+
   def write(self, f):
     f.write("\n".join(self.lines))
     f.write("\n")
@@ -124,6 +138,10 @@ def main(argv):
   if not validate(properties):
     sys.exit(1)
 
+  # Drop any blacklisted keys
+  for key in argv[2:]:
+    properties.delete(key)
+
   f = open(filename, 'w+')
   properties.write(f)
   f.close()