tree 80238dd817ebe80e55a5b7dec3394317997ebcc2
parent de9f912d6b85a09a829600bed8da419317a3c955
author lucaslin <lucaslin@google.com> 1631169966 +0800
committer Lucas Lin <lucaslin@google.com> 1640242476 +0000

Prevent an app to check if the specified VPN app is set VPN always-on

An app can check if the specified VPN app is set VPN always-on
or not by calling VpnManagerService#prepareVpn(). If it sets
oldPackage to null and newPackage to a specified VPN app which
is set always-on, then prepareVpn() will return true. So the app
could know the specified VPN app is installed and it's set
always-on.

Bug: 191276656
Test: atest FrameworksNetTests CtsNetTestCases \
      CtsHostsideNetworkTests:HostsideVpnTests
Change-Id: I0013039f58a6f7c5c73b9acc877d70a0126d0ca7
Merged-In: I0013039f58a6f7c5c73b9acc877d70a0126d0ca7