Merge "iterate over all SIMs/subscriptions and disable 2G" into main (b1b70edd) · Commits · e / os / android_frameworks_base

services/core/java/com/android/server/security/advancedprotection/features/DisallowCellular2GAdvancedProtectionHook.java

+48 −9

Original line number	Diff line number	Diff line
		@@ -24,9 +24,14 @@ import android.app.admin.DevicePolicyManager;
		import android.content.Context;
		import android.os.UserManager;
		import android.security.advancedprotection.AdvancedProtectionFeature;
		import android.telephony.SubscriptionInfo;
		import android.telephony.SubscriptionManager;
		import android.telephony.TelephonyManager;
		import android.util.Slog;

		import java.util.ArrayList;
		import java.util.List;

		/** @hide */
		public final class DisallowCellular2GAdvancedProtectionHook extends AdvancedProtectionHook {
		private static final String TAG = "AdvancedProtectionDisallowCellular2G";
		@@ -35,11 +40,13 @@ public final class DisallowCellular2GAdvancedProtectionHook extends AdvancedProt
		new AdvancedProtectionFeature(FEATURE_ID_DISALLOW_CELLULAR_2G);
		private final DevicePolicyManager mDevicePolicyManager;
		private final TelephonyManager mTelephonyManager;
		private final SubscriptionManager mSubscriptionManager;

		public DisallowCellular2GAdvancedProtectionHook(@NonNull Context context, boolean enabled) {
		super(context, enabled);
		mDevicePolicyManager = context.getSystemService(DevicePolicyManager.class);
		mTelephonyManager = context.getSystemService(TelephonyManager.class);
		mSubscriptionManager = context.getSystemService(SubscriptionManager.class);

		setPolicy(enabled);
		}
		@@ -50,14 +57,44 @@ public final class DisallowCellular2GAdvancedProtectionHook extends AdvancedProt
		return mFeature;
		}

		private static boolean isEmbeddedSubscriptionVisible(SubscriptionInfo subInfo) {
		if (subInfo.isEmbedded()
		&& (subInfo.getProfileClass() == SubscriptionManager.PROFILE_CLASS_PROVISIONING
		\|\| (com.android.internal.telephony.flags.Flags.oemEnabledSatelliteFlag()
		&& subInfo.isOnlyNonTerrestrialNetwork()))) {
		return false;
		}

		return true;
		}

		private List<TelephonyManager> getActiveTelephonyManagers() {
		List<TelephonyManager> telephonyManagers = new ArrayList<>();

		for (SubscriptionInfo subInfo : mSubscriptionManager.getActiveSubscriptionInfoList()) {
		if (isEmbeddedSubscriptionVisible(subInfo)) {
		telephonyManagers.add(
		mTelephonyManager.createForSubscriptionId(subInfo.getSubscriptionId()));
		}
		}

		return telephonyManagers;
		}

		@Override
		public boolean isAvailable() {
		return mTelephonyManager.isDataCapable();
		for (TelephonyManager telephonyManager : getActiveTelephonyManagers()) {
		if (telephonyManager.isDataCapable()
		&& telephonyManager.isRadioInterfaceCapabilitySupported(
		mTelephonyManager.CAPABILITY_USES_ALLOWED_NETWORK_TYPES_BITMASK)) {
		return true;
		}
		}

		private void setPolicy(boolean enabled) {
		Slog.i(TAG, "setPolicy called with " + enabled);
		return false;
		}

		private void setPolicy(boolean enabled) {
		if (enabled) {
		Slog.d(TAG, "Setting DISALLOW_CELLULAR_2G_GLOBALLY restriction");
		mDevicePolicyManager.addUserRestrictionGlobally(
		@@ -75,12 +112,14 @@ public final class DisallowCellular2GAdvancedProtectionHook extends AdvancedProt

		// Leave 2G disabled even if APM is disabled.
		if (!enabled) {
		for (TelephonyManager telephonyManager : getActiveTelephonyManagers()) {
		long oldAllowedTypes =
		mTelephonyManager.getAllowedNetworkTypesForReason(
		telephonyManager.getAllowedNetworkTypesForReason(
		TelephonyManager.ALLOWED_NETWORK_TYPES_REASON_ENABLE_2G);
		long newAllowedTypes = oldAllowedTypes & ~TelephonyManager.NETWORK_CLASS_BITMASK_2G;
		mTelephonyManager.setAllowedNetworkTypesForReason(
		telephonyManager.setAllowedNetworkTypesForReason(
		TelephonyManager.ALLOWED_NETWORK_TYPES_REASON_ENABLE_2G, newAllowedTypes);
		}
		}
		}
		}