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.

Ticket: CYNGNOS-3020
Bug: 27410683
Change-Id: If4a8855faf362d7f6de509d7ddc7197d1ac75cee
(cherry picked from commit af5b1764daa3b212d471f000d7091ac07c040453)

3 files changed, 7 insertions, 6 deletions

diff --git a/jni/com_android_bluetooth_btservice_AdapterService.cpp b/jni/com_android_bluetooth_btservice_AdapterService.cpp
index 88a6fe5e4..a6ffd193c 100644
--- a/jni/com_android_bluetooth_btservice_AdapterService.cpp
+++ b/jni/com_android_bluetooth_btservice_AdapterService.cpp
@@ -770,13 +770,12 @@ 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 || ret == BT_STATUS_DONE) ? JNI_TRUE : JNI_FALSE;
     return result;
 }
@@ -1286,7 +1285,7 @@ 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 ba597c3e4..86b3cecac 100644
--- a/src/com/android/bluetooth/btservice/AdapterService.java
+++ b/src/com/android/bluetooth/btservice/AdapterService.java
@@ -2537,7 +2537,7 @@ 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 54ecbe2c7..26c2821f9 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;
@@ -360,7 +361,8 @@ final class AdapterState extends StateMachine {
                     removeMessages(BLE_START_TIMEOUT);
 
                     //Enable
-                    if (!adapterService.enableNative()) {
+                    boolean isGuest = UserManager.get(mAdapterService).isGuestUser();
+                    if (!adapterService.enableNative(isGuest)) {
                         errorLog("Error while turning Bluetooth on");
                         notifyAdapterStateChange(BluetoothAdapter.STATE_OFF);
                         transitionTo(mOffState);