am 10a7d744: am 734a54f6: am 9f99bc6c: am a9e98343: Merge "Fix NOT_RESTRICTED network capability and enforce it." into lmp-dev
* commit '10a7d7449dae2aabf4f22f980e7efabf274a939a':
Fix NOT_RESTRICTED network capability and enforce it.
diff --git a/core/java/android/net/ConnectivityManager.java b/core/java/android/net/ConnectivityManager.java
index 0832d81..f5457bd 100644
--- a/core/java/android/net/ConnectivityManager.java
+++ b/core/java/android/net/ConnectivityManager.java
@@ -939,41 +939,6 @@
return 1;
}
- /**
- * Removes the NET_CAPABILITY_NOT_RESTRICTED capability from the given
- * NetworkCapabilities object if all the capabilities it provides are
- * typically provided by restricted networks.
- *
- * TODO: consider:
- * - Moving to NetworkCapabilities
- * - Renaming it to guessRestrictedCapability and make it set the
- * restricted capability bit in addition to clearing it.
- * @hide
- */
- public static void maybeMarkCapabilitiesRestricted(NetworkCapabilities nc) {
- for (int capability : nc.getCapabilities()) {
- switch (capability) {
- case NetworkCapabilities.NET_CAPABILITY_CBS:
- case NetworkCapabilities.NET_CAPABILITY_DUN:
- case NetworkCapabilities.NET_CAPABILITY_EIMS:
- case NetworkCapabilities.NET_CAPABILITY_FOTA:
- case NetworkCapabilities.NET_CAPABILITY_IA:
- case NetworkCapabilities.NET_CAPABILITY_IMS:
- case NetworkCapabilities.NET_CAPABILITY_RCS:
- case NetworkCapabilities.NET_CAPABILITY_XCAP:
- case NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED: //there by default
- continue;
- default:
- // At least one capability usually provided by unrestricted
- // networks. Conclude that this network is unrestricted.
- return;
- }
- }
- // All the capabilities are typically provided by restricted networks.
- // Conclude that this network is restricted.
- nc.removeCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED);
- }
-
private NetworkCapabilities networkCapabilitiesForFeature(int networkType, String feature) {
if (networkType == TYPE_MOBILE) {
int cap = -1;
@@ -996,14 +961,14 @@
}
NetworkCapabilities netCap = new NetworkCapabilities();
netCap.addTransportType(NetworkCapabilities.TRANSPORT_CELLULAR).addCapability(cap);
- maybeMarkCapabilitiesRestricted(netCap);
+ netCap.maybeMarkCapabilitiesRestricted();
return netCap;
} else if (networkType == TYPE_WIFI) {
if ("p2p".equals(feature)) {
NetworkCapabilities netCap = new NetworkCapabilities();
netCap.addTransportType(NetworkCapabilities.TRANSPORT_WIFI);
netCap.addCapability(NetworkCapabilities.NET_CAPABILITY_WIFI_P2P);
- maybeMarkCapabilitiesRestricted(netCap);
+ netCap.maybeMarkCapabilitiesRestricted();
return netCap;
}
}
diff --git a/core/java/android/net/NetworkCapabilities.java b/core/java/android/net/NetworkCapabilities.java
index a7f9c5b..76c24ba 100644
--- a/core/java/android/net/NetworkCapabilities.java
+++ b/core/java/android/net/NetworkCapabilities.java
@@ -37,6 +37,7 @@
* @hide
*/
public NetworkCapabilities() {
+ mNetworkCapabilities = DEFAULT_CAPABILITIES;
}
public NetworkCapabilities(NetworkCapabilities nc) {
@@ -53,8 +54,7 @@
* Represents the network's capabilities. If any are specified they will be satisfied
* by any Network that matches all of them.
*/
- private long mNetworkCapabilities = (1 << NET_CAPABILITY_NOT_RESTRICTED) |
- (1 << NET_CAPABILITY_TRUSTED) | (1 << NET_CAPABILITY_NOT_VPN);
+ private long mNetworkCapabilities;
/**
* Indicates this is a network that has the ability to reach the
@@ -166,6 +166,28 @@
private static final int MAX_NET_CAPABILITY = NET_CAPABILITY_VALIDATED;
/**
+ * Capabilities that are set by default when the object is constructed.
+ */
+ private static final long DEFAULT_CAPABILITIES =
+ (1 << NET_CAPABILITY_NOT_RESTRICTED) |
+ (1 << NET_CAPABILITY_TRUSTED) |
+ (1 << NET_CAPABILITY_NOT_VPN);
+
+ /**
+ * Capabilities that suggest that a network is restricted.
+ * {@see #maybeMarkCapabilitiesRestricted}.
+ */
+ private static final long RESTRICTED_CAPABILITIES =
+ (1 << NET_CAPABILITY_CBS) |
+ (1 << NET_CAPABILITY_DUN) |
+ (1 << NET_CAPABILITY_EIMS) |
+ (1 << NET_CAPABILITY_FOTA) |
+ (1 << NET_CAPABILITY_IA) |
+ (1 << NET_CAPABILITY_IMS) |
+ (1 << NET_CAPABILITY_RCS) |
+ (1 << NET_CAPABILITY_XCAP);
+
+ /**
* Adds the given capability to this {@code NetworkCapability} instance.
* Multiple capabilities may be applied sequentially. Note that when searching
* for a network to satisfy a request, all capabilities requested must be satisfied.
@@ -248,6 +270,22 @@
}
/**
+ * Removes the NET_CAPABILITY_NOT_RESTRICTED capability if all the capabilities it provides are
+ * typically provided by restricted networks.
+ *
+ * TODO: consider:
+ * - Renaming it to guessRestrictedCapability and make it set the
+ * restricted capability bit in addition to clearing it.
+ * @hide
+ */
+ public void maybeMarkCapabilitiesRestricted() {
+ // If all the capabilities are typically provided by restricted networks, conclude that this
+ // network is restricted.
+ if ((mNetworkCapabilities & ~(DEFAULT_CAPABILITIES | RESTRICTED_CAPABILITIES)) == 0)
+ removeCapability(NET_CAPABILITY_NOT_RESTRICTED);
+ }
+
+ /**
* Representing the transport type. Apps should generally not care about transport. A
* request for a fast internet connection could be satisfied by a number of different
* transports. If any are specified here it will be satisfied a Network that matches
diff --git a/core/java/android/net/NetworkRequest.java b/core/java/android/net/NetworkRequest.java
index 5a09b46..4c8e080 100644
--- a/core/java/android/net/NetworkRequest.java
+++ b/core/java/android/net/NetworkRequest.java
@@ -85,7 +85,13 @@
* Build {@link NetworkRequest} give the current set of capabilities.
*/
public NetworkRequest build() {
- return new NetworkRequest(mNetworkCapabilities, ConnectivityManager.TYPE_NONE,
+ // Make a copy of mNetworkCapabilities so we don't inadvertently remove NOT_RESTRICTED
+ // when later an unrestricted capability could be added to mNetworkCapabilities, in
+ // which case NOT_RESTRICTED should be returned to mNetworkCapabilities, which
+ // maybeMarkCapabilitiesRestricted() doesn't add back.
+ final NetworkCapabilities nc = new NetworkCapabilities(mNetworkCapabilities);
+ nc.maybeMarkCapabilitiesRestricted();
+ return new NetworkRequest(nc, ConnectivityManager.TYPE_NONE,
ConnectivityManager.REQUEST_ID_UNSET);
}
diff --git a/services/core/java/com/android/server/ConnectivityService.java b/services/core/java/com/android/server/ConnectivityService.java
index 758b0fc..7ffa0b6 100644
--- a/services/core/java/com/android/server/ConnectivityService.java
+++ b/services/core/java/com/android/server/ConnectivityService.java
@@ -24,6 +24,7 @@
import static android.net.ConnectivityManager.TYPE_VPN;
import static android.net.ConnectivityManager.getNetworkTypeName;
import static android.net.ConnectivityManager.isNetworkTypeValid;
+import static android.net.NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED;
import static android.net.NetworkPolicyManager.RULE_ALLOW_ALL;
import static android.net.NetworkPolicyManager.RULE_REJECT_METERED;
@@ -3608,6 +3609,16 @@
private void updateCapabilities(NetworkAgentInfo networkAgent,
NetworkCapabilities networkCapabilities) {
if (!Objects.equals(networkAgent.networkCapabilities, networkCapabilities)) {
+ if (networkAgent.networkCapabilities.hasCapability(NET_CAPABILITY_NOT_RESTRICTED) !=
+ networkCapabilities.hasCapability(NET_CAPABILITY_NOT_RESTRICTED)) {
+ try {
+ mNetd.setNetworkPermission(networkAgent.network.netId,
+ networkCapabilities.hasCapability(NET_CAPABILITY_NOT_RESTRICTED) ?
+ null : NetworkManagementService.PERMISSION_SYSTEM);
+ } catch (RemoteException e) {
+ loge("Exception in setNetworkPermission: " + e);
+ }
+ }
synchronized (networkAgent) {
networkAgent.networkCapabilities = networkCapabilities;
}
@@ -4037,7 +4048,10 @@
(networkAgent.networkMisc == null ||
!networkAgent.networkMisc.allowBypass));
} else {
- mNetd.createPhysicalNetwork(networkAgent.network.netId);
+ mNetd.createPhysicalNetwork(networkAgent.network.netId,
+ networkAgent.networkCapabilities.hasCapability(
+ NET_CAPABILITY_NOT_RESTRICTED) ?
+ null : NetworkManagementService.PERMISSION_SYSTEM);
}
} catch (Exception e) {
loge("Error creating network " + networkAgent.network.netId + ": "