Global DNS switch (444f8cb9) · Commits · e / os / android_frameworks_base

services/core/java/com/android/server/ConnectivityService.java

+46 −3

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2008 The Android Open Source Project
		* Copyright (C) 2019 e.foundation
		*
		* Licensed under the Apache License, Version 2.0 (the "License");
		* you may not use this file except in compliance with the License.
		@@ -182,7 +183,7 @@ public class ConnectivityService extends IConnectivityManager.Stub
		public static final String SHORT_ARG = "--short";
		public static final String TETHERING_ARG = "tethering";

		private static final boolean DBG = true;
		private static final boolean DBG = false;
		private static final boolean VDBG = false;

		private static final boolean LOGD_RULES = false;
		@@ -4609,7 +4610,27 @@ public class ConnectivityService extends IConnectivityManager.Stub
		return; // no updating necessary
		}

		Collection<InetAddress> dnses = newLp.getDnsServers();
		Collection<InetAddress> dnses = null;//newLp.getDnsServers();

		int useNwDNS = android.provider.Settings.System.getInt(mContext.getContentResolver(), "USE_NETWORK_DNS", 1);
		if (DBG) log("useNwDNS>"+useNwDNS+"<");

		if ( 0 != useNwDNS ) {
		dnses = newLp.getDnsServers();
		} else {
		dnses = new ArrayList<InetAddress>();
		try {
		String s = android.provider.Settings.System.getString(mContext.getContentResolver(), "OVERRIDE_DNS_IP_V4");
		if (s == null) s = "9.9.9.9";
		if (DBG) log("Override dnses>"+s+"<");

		InetAddress addr = InetAddress.getByName(s);
		dnses.add(addr);
		} catch (Exception e) {
		loge("Cannot set custom DNS: " + e);
		}
		}

		if (DBG) log("Setting DNS servers for network " + netId + " to " + dnses);
		try {
		mNetd.setDnsConfigurationForNetwork(
		@@ -4617,6 +4638,7 @@ public class ConnectivityService extends IConnectivityManager.Stub
		} catch (Exception e) {
		loge("Exception in setDnsConfigurationForNetwork: " + e);
		}
		if (DBG) log("Setting DNS servers for network (2)" + netId + " to " + dnses);
		final NetworkAgentInfo defaultNai = getDefaultNetwork();
		if (defaultNai != null && defaultNai.network.netId == netId) {
		setDefaultDnsSystemProperties(dnses);
		@@ -4893,7 +4915,28 @@ public class ConnectivityService extends IConnectivityManager.Stub
		handleApplyDefaultProxy(newNetwork.linkProperties.getHttpProxy());
		updateTcpBufferSizes(newNetwork);
		updateTcpDelayedAck(newNetwork);
		setDefaultDnsSystemProperties(newNetwork.linkProperties.getDnsServers());

		Collection<InetAddress> dnses = null;
		int useNwDNS = android.provider.Settings.System.getInt(mContext.getContentResolver(), "USE_NETWORK_DNS", 1);
		if (DBG) log("useNwDNS>"+useNwDNS+"<");

		if ( 0 != useNwDNS ) {
		dnses = newNetwork.linkProperties.getDnsServers();
		} else {
		dnses = new ArrayList<InetAddress>();
		try {
		String s = android.provider.Settings.System.getString(mContext.getContentResolver(), "OVERRIDE_DNS_IP_V4");
		if (s == null) s = "9.9.9.9";
		if (DBG) log("Override dnses>"+s+"<");

		InetAddress addr = InetAddress.getByName(s);
		dnses.add(addr);
		} catch (Exception e) {
		loge("Cannot set custom DNS: " + e);
		}
		}

		setDefaultDnsSystemProperties(dnses);
		}

		private void processListenRequests(NetworkAgentInfo nai, boolean capabilitiesChanged) {

services/core/java/com/android/server/NetworkManagementService.java

+17 −1

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2007 The Android Open Source Project
		* Copyright (C) 2019 e.foundation
		*
		* Licensed under the Apache License, Version 2.0 (the "License");
		* you may not use this file except in compliance with the License.
		@@ -762,7 +763,22 @@ public class NetworkManagementService extends INetworkManagementService.Stub
		* Notify our observers of DNS server information received.
		*/
		private void notifyInterfaceDnsServerInfo(String iface, long lifetime, String[] addresses) {

		int useNwDNS = android.provider.Settings.System.getInt(mContext.getContentResolver(), "USE_NETWORK_DNS", 1);
		//Slog.i(TAG,"notifyInterfaceDnsServerInfo useNwDNS>"+useNwDNS+"<");

		if ( 0 != useNwDNS ) {
		// Default
		invokeForAllObservers(o -> o.interfaceDnsServerInfo(iface, lifetime, addresses));
		} else {
		final String[] xaddresses = new String[1];
		String s = android.provider.Settings.System.getString(mContext.getContentResolver(), "OVERRIDE_DNS_IP_V4");
		//Slog.i(TAG,"notifyInterfaceDnsServerInfo Override dnses>"+s+"<");
		xaddresses[0] = s;
		invokeForAllObservers(o -> o.interfaceDnsServerInfo(iface, lifetime, xaddresses));
		}


		}

		/**