lucaslin 46eb3bead1 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
2021-12-22 07:03:51 +00:00
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2021-08-16 19:39:21 +00:00
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2021-08-03 10:20:11 -07:00
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