LineageOS/android_packages_modules_Connectivity
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Stop accessing VPNs in getAllVpnInfo.

Browse Source 
This is only used for NetworkStatsService and only called on the
handler thread, so it can be replaced by a simple scan over
mNetworkAgentInfos without having to take any locks.

Bug: 173331190
Test: passes existing tests in ConnectivityServiceTest
Change-Id: I194e0cc55603a0f59f7138f38329f505b55da132
This commit is contained in:
Lorenzo Colitti
2020-11-17 15:58:21 +09:00
parent 8000e03ec9
commit fee5e4e34c
1 changed files with 30 additions and 24 deletions
Download Patch File Download Diff File Expand all files Collapse all files

54
services/core/java/com/android/server/ConnectivityService.java
View File

@@ -4730,10 +4730,9 @@ public class ConnectivityService extends IConnectivityManager.Stub
if (mLockdownEnabled) {
return new VpnInfo[0];
}
List<VpnInfo> infoList = new ArrayList<>();
for (int i = 0; i < mVpns.size(); i++) {
VpnInfo info = createVpnInfo(mVpns.valueAt(i));
for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) {
VpnInfo info = createVpnInfo(nai);
if (info != null) {
infoList.add(info);
}
@@ -4746,13 +4745,10 @@ public class ConnectivityService extends IConnectivityManager.Stub
* @return VPN information for accounting, or null if we can't retrieve all required
* information, e.g underlying ifaces.
*/
@Nullable
private VpnInfo createVpnInfo(Vpn vpn) {
VpnInfo info = vpn.getVpnInfo();
if (info == null) {
return null;
}
Network[] underlyingNetworks = vpn.getUnderlyingNetworks();
private VpnInfo createVpnInfo(NetworkAgentInfo nai) {
if (!nai.isVPN()) return null;
Network[] underlyingNetworks = nai.declaredUnderlyingNetworks;
// see VpnService.setUnderlyingNetworks()'s javadoc about how to interpret
// the underlyingNetworks list.
if (underlyingNetworks == null) {
@@ -4761,23 +4757,33 @@ public class ConnectivityService extends IConnectivityManager.Stub
underlyingNetworks = new Network[] { defaultNai.network };
}
}
if (underlyingNetworks != null && underlyingNetworks.length > 0) {
List<String> interfaces = new ArrayList<>();
for (Network network : underlyingNetworks) {
LinkProperties lp = getLinkProperties(network);
if (lp != null) {
for (String iface : lp.getAllInterfaceNames()) {
if (!TextUtils.isEmpty(iface)) {
interfaces.add(iface);
}
}
if (ArrayUtils.isEmpty(underlyingNetworks)) return null;
List<String> interfaces = new ArrayList<>();
for (Network network : underlyingNetworks) {
NetworkAgentInfo underlyingNai = getNetworkAgentInfoForNetwork(network);
if (underlyingNai == null) continue;
LinkProperties lp = underlyingNai.linkProperties;
for (String iface : lp.getAllInterfaceNames()) {
if (!TextUtils.isEmpty(iface)) {
interfaces.add(iface);
}
}
if (!interfaces.isEmpty()) {
info.underlyingIfaces = interfaces.toArray(new String[interfaces.size()]);
}
}
return info.underlyingIfaces == null ? null : info;
if (interfaces.isEmpty()) return null;
VpnInfo info = new VpnInfo();
info.ownerUid = nai.networkCapabilities.getOwnerUid();
info.vpnIface = nai.linkProperties.getInterfaceName();
// Must be non-null or NetworkStatsService will crash.
// Cannot happen in production code because Vpn only registers the NetworkAgent after the
// tun or ipsec interface is created.
if (info.vpnIface == null) return null;
info.underlyingIfaces = interfaces.toArray(new String[0]);
return info;
}
/**