tree ccf827805d79a1e127b97964129540aaceaaf7c9
parent be5d5aca7cda375538f014403e3cbb61485435de
author Ken Chen <cken@google.com> 1666864478 +0800
committer Ken Chen <cken@google.com> 1667391817 +0800

Fix netd crash in checkUserNetworkAccessLocked()

SIGABRT happens when unprivileged applications call Network.bindSocket
with a local network (netId=99). Netd statically cast a LocalNetwork
object to PhysicalNetwork, call member function getPermission().
However, the function exists in PhysicalNetwork only.

This commit makes getPermission() as a pure virtual function in the
ancestor class and implements it in each subclass.

Bug: 255954808
Test: atest netdclient_root_test
Change-Id: Ibe1eabe6ff4dc4ee124b820d596bb16c3fe371b2