Merge "Validate checkInstallConstraints() installer package name" into udc-dev am: d359469b9b

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23053819

Change-Id: Ic54c355ea913270334b03bc8a73feb8e554bc0f4
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>

services/core/java/com/android/server/pm/PackageInstallerService.java

@@ -1316,6 +1316,11 @@ public class PackageInstallerService extends IPackageInstaller.Stub implements
 
         final var snapshot = mPm.snapshotComputer();
         final int callingUid = Binder.getCallingUid();
+        final var callingPackageName = snapshot.getNameForUid(callingUid);
+        if (!TextUtils.equals(callingPackageName, installerPackageName)) {
+            throw new SecurityException("The installerPackageName set by the caller doesn't match "
+                    + "the caller's own package name.");
+        }
         if (!PackageManagerServiceUtils.isSystemOrRootOrShell(callingUid)) {
             for (var packageName : packageNames) {
                 var ps = snapshot.getPackageStateInternal(packageName);