Implement createBondOutOfBand

This patch implements out of band pairing that uses optional data.
Currently it works only for LE transport, using Temporary Key value.
In future fields might be added to OOBData to support other options for
optional data.

Change-Id: I1b4942e656be7b5d1ae5a4bf9d867ffd74753798

1 files changed, 51 insertions, 0 deletions

diff --git a/jni/com_android_bluetooth_btservice_AdapterService.cpp b/jni/com_android_bluetooth_btservice_AdapterService.cpp
index 9223157de..6462e0bb4 100755
--- a/jni/com_android_bluetooth_btservice_AdapterService.cpp
+++ b/jni/com_android_bluetooth_btservice_AdapterService.cpp
@@ -31,6 +31,8 @@
 
 namespace android {
 
+#define OOB_TK_SIZE 16
+
 #define ADDITIONAL_NREFS 50
 static jmethodID method_stateChangeCallback;
 static jmethodID method_adapterPropertyChangedCallback;
@@ -771,6 +773,54 @@ static jboolean createBondNative(JNIEnv* env, jobject obj, jbyteArray address, j
     return result;
 }
 
+static jbyteArray callByteArrayGetter(JNIEnv* env, jobject object, char* className, char* methodName) {
+    jclass myClass = env->FindClass(className);
+    jmethodID myMethod = env->GetMethodID(myClass, methodName, "()[B");
+    return (jbyteArray) env->CallObjectMethod(object, myMethod);
+}
+
+static jboolean createBondOutOfBandNative(JNIEnv* env, jobject obj, jbyteArray address,
+                jint transport, jobject oobData) {
+    jbyte *addr;
+    jboolean result = JNI_FALSE;
+    bt_out_of_band_data_t oob_data;
+
+    memset(&oob_data, 0, sizeof(oob_data));
+
+    if (!sBluetoothInterface) return result;
+
+    addr = env->GetByteArrayElements(address, NULL);
+    if (addr == NULL) {
+        jniThrowIOException(env, EINVAL);
+        return result;
+    }
+
+    jbyte* smTKBytes = NULL;
+    jbyteArray smTK = callByteArrayGetter(env, oobData, "android/bluetooth/OobData", "getSecurityManagerTk");
+    if (smTK != NULL) {
+        smTKBytes = env->GetByteArrayElements(smTK, NULL);
+        int len = env->GetArrayLength(smTK);
+        if (len != OOB_TK_SIZE) {
+            ALOGI("%s: wrong length of smTK, should be empty or %d bytes.", __FUNCTION__, OOB_TK_SIZE);
+            jniThrowIOException(env, EINVAL);
+            goto done;
+        }
+        memcpy(oob_data.sm_tk, smTKBytes, len);
+    }
+
+    if (sBluetoothInterface->create_bond_out_of_band((bt_bdaddr_t *)addr, transport, &oob_data)
+        == BT_STATUS_SUCCESS)
+        result = JNI_TRUE;
+
+done:
+    env->ReleaseByteArrayElements(address, addr, 0);
+
+    if (smTK != NULL)
+        env->ReleaseByteArrayElements(smTK, smTKBytes, 0);
+
+    return result;
+}
+
 static jboolean removeBondNative(JNIEnv* env, jobject obj, jbyteArray address) {
     ALOGV("%s:",__FUNCTION__);
 
@@ -1145,6 +1195,7 @@ static JNINativeMethod sMethods[] = {
     {"startDiscoveryNative", "()Z", (void*) startDiscoveryNative},
     {"cancelDiscoveryNative", "()Z", (void*) cancelDiscoveryNative},
     {"createBondNative", "([BI)Z", (void*) createBondNative},
+    {"createBondOutOfBandNative", "([BILandroid/bluetooth/OobData;)Z", (void*) createBondOutOfBandNative},
     {"removeBondNative", "([B)Z", (void*) removeBondNative},
     {"cancelBondNative", "([B)Z", (void*) cancelBondNative},
     {"getConnectionStateNative", "([B)I", (void*) getConnectionStateNative},