Propagate max_sdk_version to manifest_fixer

If max_sdk_version is included in Android.bp that value will now be
propagated to manifest_fixer.py. This value will then be used to
override any maxSdkVersion attribute set on permission or
uses-permission tags in the android manifest if maxSdkVersion="-1".

Bug: 223902327
Test: add max_sdk_version to Android.bp for test app
Test: create permission in test app manifest with maxSdkVersion="-1"
Test: run test to check maxSdkVersion=max_sdk_version
Change-Id: Ic533ef2a41b9ecc9ee68c69399026df47ee945b7
diff --git a/scripts/manifest_fixer.py b/scripts/manifest_fixer.py
index 2d3103b..2da29ee 100755
--- a/scripts/manifest_fixer.py
+++ b/scripts/manifest_fixer.py
@@ -39,6 +39,8 @@
   parser = argparse.ArgumentParser()
   parser.add_argument('--minSdkVersion', default='', dest='min_sdk_version',
                       help='specify minSdkVersion used by the build system')
+  parser.add_argument('--replaceMaxSdkVersionPlaceholder', default='', dest='max_sdk_version',
+                      help='specify maxSdkVersion used by the build system')
   parser.add_argument('--targetSdkVersion', default='', dest='target_sdk_version',
                       help='specify targetSdkVersion used by the build system')
   parser.add_argument('--raise-min-sdk-version', dest='raise_min_sdk_version', action='store_true',
@@ -342,6 +344,24 @@
   attr.value = 'true'
   application.setAttributeNode(attr)
 
+def set_max_sdk_version(doc, max_sdk_version):
+  """Replace the maxSdkVersion attribute value for permission and
+  uses-permission tags if the value was originally set to 'current'.
+  Used for cts test cases where the maxSdkVersion should equal to
+  Build.SDK_INT.
+
+  Args:
+    doc: The XML document.  May be modified by this function.
+    max_sdk_version: The requested maxSdkVersion attribute.
+  """
+  manifest = parse_manifest(doc)
+  for tag in ['permission', 'uses-permission']:
+    children = get_children_with_tag(manifest, tag)
+    for child in children:
+      max_attr = child.getAttributeNodeNS(android_ns, 'maxSdkVersion')
+      if max_attr and max_attr.value == 'current':
+        max_attr.value = max_sdk_version
+
 def main():
   """Program entry point."""
   try:
@@ -354,6 +374,9 @@
     if args.raise_min_sdk_version:
       raise_min_sdk_version(doc, args.min_sdk_version, args.target_sdk_version, args.library)
 
+    if args.max_sdk_version:
+      set_max_sdk_version(doc, args.max_sdk_version)
+
     if args.uses_libraries:
       add_uses_libraries(doc, args.uses_libraries, True)