LineageOS/android_packages_modules_Connectivity
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Fix NullPointerException on NsdService

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The NsdService will throw a NPE if a new client is registered
with a null INsdManagerCallback object. To avoid this, perform
a null check before registering a new client and throw an
IllegalArgumentException if the callback is null.

Bug: 293285797
Test: atest FrameworksNetTests
Change-Id: Id61e27873591031c3fe383879aee0d40eebc08b3
This commit is contained in:
Paul Hu
2023-08-09 16:05:20 +08:00
parent 8ba50ae30f
commit 101dbf5262
2 changed files with 19 additions and 2 deletions
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7
service-t/src/com/android/server/NsdService.java
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@@ -1920,11 +1920,14 @@ public class NsdService extends INsdManager.Stub {
@Override
public INsdServiceConnector connect(INsdManagerCallback cb, boolean useJavaBackend) {
mContext.enforceCallingOrSelfPermission(android.Manifest.permission.INTERNET, "NsdService");
final int uid = mDeps.getCallingUid();
if (cb == null) {
throw new IllegalArgumentException("Unknown client callback from uid=" + uid);
}
if (DBG) Log.d(TAG, "New client connect. useJavaBackend=" + useJavaBackend);
final INsdServiceConnector connector = new NsdServiceConnector();
mNsdStateMachine.sendMessage(mNsdStateMachine.obtainMessage(NsdManager.REGISTER_CLIENT,
new ConnectorArgs((NsdServiceConnector) connector, cb, useJavaBackend,
mDeps.getCallingUid())));
new ConnectorArgs((NsdServiceConnector) connector, cb, useJavaBackend, uid)));
return connector;
}