Add guest mode functionality (3/3)

Add a flag to enable() to start Bluetooth in restricted
mode. In restricted mode, all devices that are paired during
restricted mode are deleted upon leaving restricted mode.
Right now restricted mode is only entered while a guest
user is active.

CYNGNOS-3020
Bug: 27410683
Change-Id: If4a8855faf362d7f6de509d7ddc7197d1ac75cee
(cherry picked from commit e1ca5cccd6c2b37f783aa0ee2d9371108ad5c855)

3 files changed, 8 insertions, 7 deletions

diff --git a/jni/com_android_bluetooth_btservice_AdapterService.cpp b/jni/com_android_bluetooth_btservice_AdapterService.cpp
index cb917976e..f2c767fa5 100644
--- a/jni/com_android_bluetooth_btservice_AdapterService.cpp
+++ b/jni/com_android_bluetooth_btservice_AdapterService.cpp
@@ -864,13 +864,13 @@ static bool ssrcleanupNative(JNIEnv *env, jobject obj, jboolean cleanup) {
     return JNI_TRUE;
 }
 
-static jboolean enableNative(JNIEnv* env, jobject obj) {
+static jboolean enableNative(JNIEnv* env, jobject obj, jboolean isGuest) {
     ALOGV("%s:",__FUNCTION__);
 
     jboolean result = JNI_FALSE;
     if (!sBluetoothInterface) return result;
 
-    int ret = sBluetoothInterface->enable();
+    int ret = sBluetoothInterface->enable(isGuest == JNI_TRUE ? 1 : 0);
     result = (ret == BT_STATUS_SUCCESS) ? JNI_TRUE : JNI_FALSE;
     return result;
 }
@@ -1354,7 +1354,7 @@ static JNINativeMethod sMethods[] = {
     {"initNative", "()Z", (void *) initNative},
     {"cleanupNative", "()V", (void*) cleanupNative},
     {"ssrcleanupNative", "(Z)V", (void*) ssrcleanupNative},
-    {"enableNative", "()Z",  (void*) enableNative},
+    {"enableNative", "(Z)Z",  (void*) enableNative},
     {"disableNative", "()Z",  (void*) disableNative},
     {"setAdapterPropertyNative", "(I[B)Z", (void*) setAdapterPropertyNative},
     {"getAdapterPropertiesNative", "()Z", (void*) getAdapterPropertiesNative},
diff --git a/src/com/android/bluetooth/btservice/AdapterService.java b/src/com/android/bluetooth/btservice/AdapterService.java
index 54d883c82..f84409c93 100644
--- a/src/com/android/bluetooth/btservice/AdapterService.java
+++ b/src/com/android/bluetooth/btservice/AdapterService.java
@@ -2167,7 +2167,7 @@ public class AdapterService extends Service {
     private native boolean initNative();
     private native void cleanupNative();
     /*package*/ native void ssrcleanupNative(boolean cleanup);
-    /*package*/ native boolean enableNative();
+    /*package*/ native boolean enableNative(boolean startRestricted);
     /*package*/ native boolean disableNative();
     /*package*/ native boolean setAdapterPropertyNative(int type, byte[] val);
     /*package*/ native boolean getAdapterPropertiesNative();
diff --git a/src/com/android/bluetooth/btservice/AdapterState.java b/src/com/android/bluetooth/btservice/AdapterState.java
index 3469068c4..8127dd807 100644
--- a/src/com/android/bluetooth/btservice/AdapterState.java
+++ b/src/com/android/bluetooth/btservice/AdapterState.java
@@ -20,6 +20,7 @@ import android.bluetooth.BluetoothAdapter;
 import android.content.Context;
 import android.content.Intent;
 import android.os.Message;
+import android.os.UserManager;
 import android.util.Log;
 
 import com.android.internal.util.State;
@@ -258,9 +259,9 @@ final class AdapterState extends StateMachine {
                     removeMessages(START_TIMEOUT);
 
                     //Enable
-                    boolean ret = adapterService.enableNative();
-                    if (!ret) {
-                        Log.e(TAG, "Error while turning Bluetooth On");
+                    boolean isGuest = UserManager.get(mAdapterService).isGuestUser();
+                    if (!adapterService.enableNative(isGuest)) {
+                        Log.e(TAG, "Error while turning Bluetooth on");
                         notifyAdapterStateChange(BluetoothAdapter.STATE_OFF);
                         transitionTo(mOffState);
                     } else {