Merge "Disable WiFi autojoin when user decides via "Stay connected?" dialog" into mnc-dev
diff --git a/core/java/android/net/ConnectivityManager.java b/core/java/android/net/ConnectivityManager.java
index dc8ff8f..ba63969 100644
--- a/core/java/android/net/ConnectivityManager.java
+++ b/core/java/android/net/ConnectivityManager.java
@@ -892,7 +892,6 @@
      *
      * @deprecated Deprecated in favor of the cleaner
      *             {@link #requestNetwork(NetworkRequest, NetworkCallback)} API.
-     * @removed
      */
     public int startUsingNetworkFeature(int networkType, String feature) {
         NetworkCapabilities netCap = networkCapabilitiesForFeature(networkType, feature);
@@ -939,8 +938,7 @@
      * implementation+feature combination, except that the value {@code -1}
      * always indicates failure.
      *
-     * @deprecated Deprecated in favor of the cleaner {@link unregisterNetworkCallback} API.
-     * @removed
+     * @deprecated Deprecated in favor of the cleaner {@link #unregisterNetworkCallback} API.
      */
     public int stopUsingNetworkFeature(int networkType, String feature) {
         NetworkCapabilities netCap = networkCapabilitiesForFeature(networkType, feature);
@@ -1220,7 +1218,6 @@
      * @deprecated Deprecated in favor of the
      *             {@link #requestNetwork(NetworkRequest, NetworkCallback)},
      *             {@link #bindProcessToNetwork} and {@link Network#getSocketFactory} API.
-     * @removed
      */
     public boolean requestRouteToHost(int networkType, int hostAddress) {
         return requestRouteToHostAddress(networkType, NetworkUtils.intToInetAddress(hostAddress));
@@ -1239,7 +1236,6 @@
      * @hide
      * @deprecated Deprecated in favor of the {@link #requestNetwork} and
      *             {@link #bindProcessToNetwork} API.
-     * @removed
      */
     public boolean requestRouteToHostAddress(int networkType, InetAddress hostAddress) {
         try {
diff --git a/core/java/android/net/IConnectivityManager.aidl b/core/java/android/net/IConnectivityManager.aidl
index 78f8b95..46c28a6 100644
--- a/core/java/android/net/IConnectivityManager.aidl
+++ b/core/java/android/net/IConnectivityManager.aidl
@@ -112,7 +112,7 @@
 
     void startLegacyVpn(in VpnProfile profile);
 
-    LegacyVpnInfo getLegacyVpnInfo();
+    LegacyVpnInfo getLegacyVpnInfo(int userId);
 
     VpnInfo[] getAllVpnInfo();
 
diff --git a/core/java/android/net/LinkProperties.java b/core/java/android/net/LinkProperties.java
index cfd5bf1..c4de4a2 100644
--- a/core/java/android/net/LinkProperties.java
+++ b/core/java/android/net/LinkProperties.java
@@ -662,6 +662,17 @@
     }
 
     /**
+     * Returns true if this link or any of its stacked interfaces has an IPv4 address.
+     *
+     * @return {@code true} if there is an IPv4 address, {@code false} otherwise.
+     */
+    private boolean hasIPv4AddressOnInterface(String iface) {
+        return (mIfaceName.equals(iface) && hasIPv4Address()) ||
+                (iface != null && mStackedLinks.containsKey(iface) &&
+                        mStackedLinks.get(iface).hasIPv4Address());
+    }
+
+    /**
      * Returns true if this link has a global preferred IPv6 address.
      *
      * @return {@code true} if there is a global preferred IPv6 address, {@code false} otherwise.
@@ -792,7 +803,7 @@
 
         if (ip instanceof Inet4Address) {
             // For IPv4, it suffices for now to simply have any address.
-            return hasIPv4Address();
+            return hasIPv4AddressOnInterface(bestRoute.getInterface());
         } else if (ip instanceof Inet6Address) {
             if (ip.isLinkLocalAddress()) {
                 // For now, just make sure link-local destinations have
diff --git a/services/core/java/com/android/server/ConnectivityService.java b/services/core/java/com/android/server/ConnectivityService.java
index f57c17b..0b610ae 100644
--- a/services/core/java/com/android/server/ConnectivityService.java
+++ b/services/core/java/com/android/server/ConnectivityService.java
@@ -407,6 +407,10 @@
     // sequence number of NetworkRequests
     private int mNextNetworkRequestId = 1;
 
+    // NetworkRequest activity String log entries.
+    private static final int MAX_NETWORK_REQUEST_LOGS = 20;
+    private final LocalLog mNetworkRequestInfoLogs = new LocalLog(MAX_NETWORK_REQUEST_LOGS);
+
     // Array of <Network,ReadOnlyLocalLogs> tracking network validation and results
     private static final int MAX_VALIDATION_LOGS = 10;
     private final ArrayDeque<Pair<Network,ReadOnlyLocalLog>> mValidationLogs =
@@ -559,8 +563,9 @@
             final DetailedState state = nai.networkInfo.getDetailedState();
             for (int type = 0; type < mTypeLists.length; type++) {
                 final ArrayList<NetworkAgentInfo> list = mTypeLists[type];
+                final boolean contains = (list != null && list.contains(nai));
                 final boolean isFirst = (list != null && list.size() > 0 && nai == list.get(0));
-                if (isFirst || isDefault) {
+                if (isFirst || (contains && isDefault)) {
                     maybeLogBroadcast(nai, state, type, isDefault);
                     sendLegacyNetworkBroadcast(nai, state, type);
                 }
@@ -609,8 +614,10 @@
         if (DBG) log("ConnectivityService starting up");
 
         mDefaultRequest = createInternetRequestForTransport(-1);
-        mNetworkRequests.put(mDefaultRequest, new NetworkRequestInfo(
-                null, mDefaultRequest, new Binder(), NetworkRequestInfo.REQUEST));
+        NetworkRequestInfo defaultNRI = new NetworkRequestInfo(null, mDefaultRequest,
+                new Binder(), NetworkRequestInfo.REQUEST);
+        mNetworkRequests.put(mDefaultRequest, defaultNRI);
+        mNetworkRequestInfoLogs.log("REGISTER " + defaultNRI);
 
         mDefaultMobileDataRequest = createInternetRequestForTransport(
                 NetworkCapabilities.TRANSPORT_CELLULAR);
@@ -1765,7 +1772,7 @@
                 // Start gathering diagnostic information.
                 netDiags.add(new NetworkDiagnostics(
                         nai.network,
-                        new LinkProperties(nai.linkProperties),
+                        new LinkProperties(nai.linkProperties),  // Must be a copy.
                         DIAG_TIME_MS));
             }
 
@@ -1858,6 +1865,12 @@
                     pw.decreaseIndent();
                 }
             }
+
+            pw.println();
+            pw.println("mNetworkRequestInfoLogs (most recent first):");
+            pw.increaseIndent();
+            mNetworkRequestInfoLogs.reverseDump(fd, pw, args);
+            pw.decreaseIndent();
         }
     }
 
@@ -2207,6 +2220,7 @@
 
     private void handleRegisterNetworkRequest(NetworkRequestInfo nri) {
         mNetworkRequests.put(nri.request, nri);
+        mNetworkRequestInfoLogs.log("REGISTER " + nri);
         rematchAllNetworksAndRequests(null, 0);
         if (nri.isRequest && mNetworkForRequestId.get(nri.request.requestId) == null) {
             sendUpdatedScoreToFactories(nri.request, 0);
@@ -2256,6 +2270,7 @@
             if (DBG) log("releasing NetworkRequest " + request);
             nri.unlinkDeathRecipient();
             mNetworkRequests.remove(request);
+            mNetworkRequestInfoLogs.log("RELEASE " + nri);
             if (nri.isRequest) {
                 // Find all networks that are satisfying this request and remove the request
                 // from their request lists.
@@ -3027,11 +3042,11 @@
      * are checked in Vpn class.
      */
     @Override
-    public LegacyVpnInfo getLegacyVpnInfo() {
+    public LegacyVpnInfo getLegacyVpnInfo(int userId) {
+        enforceCrossUserPermission(userId);
         throwIfLockdownEnabled();
-        int user = UserHandle.getUserId(Binder.getCallingUid());
         synchronized(mVpns) {
-            return mVpns.get(user).getLegacyVpnInfo();
+            return mVpns.get(userId).getLegacyVpnInfo();
         }
     }
 
@@ -3524,8 +3539,9 @@
         }
 
         public String toString() {
-            return (isRequest ? "Request" : "Listen") + " from uid/pid:" + mUid + "/" +
-                    mPid + " for " + request +
+            return (isRequest ? "Request" : "Listen") +
+                    " from uid/pid:" + mUid + "/" + mPid +
+                    " for " + request +
                     (mPendingIntent == null ? "" : " to trigger " + mPendingIntent);
         }
     }
@@ -3555,9 +3571,9 @@
 
         NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, legacyType,
                 nextNetworkRequestId());
-        if (DBG) log("requestNetwork for " + networkRequest);
         NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder,
                 NetworkRequestInfo.REQUEST);
+        if (DBG) log("requestNetwork for " + nri);
 
         mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST, nri));
         if (timeoutMs > 0) {
@@ -3620,9 +3636,9 @@
 
         NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, TYPE_NONE,
                 nextNetworkRequestId());
-        if (DBG) log("pendingRequest for " + networkRequest + " to trigger " + operation);
         NetworkRequestInfo nri = new NetworkRequestInfo(networkRequest, operation,
                 NetworkRequestInfo.REQUEST);
+        if (DBG) log("pendingRequest for " + nri);
         mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT,
                 nri));
         return networkRequest;
@@ -3670,11 +3686,11 @@
             enforceAccessPermission();
         }
 
-        NetworkRequest networkRequest = new NetworkRequest(new NetworkCapabilities(
-                networkCapabilities), TYPE_NONE, nextNetworkRequestId());
-        if (DBG) log("listenForNetwork for " + networkRequest);
+        NetworkRequest networkRequest = new NetworkRequest(
+                new NetworkCapabilities(networkCapabilities), TYPE_NONE, nextNetworkRequestId());
         NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder,
                 NetworkRequestInfo.LISTEN);
+        if (DBG) log("listenForNetwork for " + nri);
 
         mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_LISTENER, nri));
         return networkRequest;
@@ -3688,11 +3704,11 @@
             enforceAccessPermission();
         }
 
-        NetworkRequest networkRequest = new NetworkRequest(new NetworkCapabilities(
-                networkCapabilities), TYPE_NONE, nextNetworkRequestId());
-        if (DBG) log("pendingListenForNetwork for " + networkRequest + " to trigger " + operation);
+        NetworkRequest networkRequest = new NetworkRequest(
+                new NetworkCapabilities(networkCapabilities), TYPE_NONE, nextNetworkRequestId());
         NetworkRequestInfo nri = new NetworkRequestInfo(networkRequest, operation,
                 NetworkRequestInfo.LISTEN);
+        if (DBG) log("pendingListenForNetwork for " + nri);
 
         mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_LISTENER, nri));
     }
diff --git a/services/core/java/com/android/server/connectivity/NetworkDiagnostics.java b/services/core/java/com/android/server/connectivity/NetworkDiagnostics.java
index 74ba404..aca6991 100644
--- a/services/core/java/com/android/server/connectivity/NetworkDiagnostics.java
+++ b/services/core/java/com/android/server/connectivity/NetworkDiagnostics.java
@@ -20,6 +20,7 @@
 
 import android.net.LinkProperties;
 import android.net.Network;
+import android.net.NetworkUtils;
 import android.net.RouteInfo;
 import android.os.SystemClock;
 import android.system.ErrnoException;
@@ -79,6 +80,10 @@
 public class NetworkDiagnostics {
     private static final String TAG = "NetworkDiagnostics";
 
+    private static final InetAddress TEST_DNS4 = NetworkUtils.numericToInetAddress("8.8.8.8");
+    private static final InetAddress TEST_DNS6 = NetworkUtils.numericToInetAddress(
+            "2001:4860:4860::8888");
+
     // For brevity elsewhere.
     private static final long now() {
         return SystemClock.elapsedRealtime();
@@ -156,6 +161,21 @@
         mStartTime = now();
         mDeadlineTime = mStartTime + mTimeoutMs;
 
+        // Hardcode measurements to TEST_DNS4 and TEST_DNS6 in order to test off-link connectivity.
+        // We are free to modify mLinkProperties with impunity because ConnectivityService passes us
+        // a copy and not the original object. It's easier to do it this way because we don't need
+        // to check whether the LinkProperties already contains these DNS servers because
+        // LinkProperties#addDnsServer checks for duplicates.
+        if (mLinkProperties.isReachable(TEST_DNS4)) {
+            mLinkProperties.addDnsServer(TEST_DNS4);
+        }
+        // TODO: we could use mLinkProperties.isReachable(TEST_DNS6) here, because we won't set any
+        // DNS servers for which isReachable() is false, but since this is diagnostic code, be extra
+        // careful.
+        if (mLinkProperties.hasGlobalIPv6Address() || mLinkProperties.hasIPv6DefaultRoute()) {
+            mLinkProperties.addDnsServer(TEST_DNS6);
+        }
+
         for (RouteInfo route : mLinkProperties.getRoutes()) {
             if (route.hasGateway()) {
                 prepareIcmpMeasurement(route.getGateway());