1/*
2 * Copyright (C) 2012 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#define LOG_TAG "BluetoothPanServiceJni"
18
19#define LOG_NDEBUG 0
20
21#define CHECK_CALLBACK_ENV                                                      \
22   if (!checkCallbackThread()) {                                                \
23       error("Callback: '%s' is not called on the correct thread", __FUNCTION__);\
24       return;                                                                  \
25   }
26
27#include "com_android_bluetooth.h"
28#include "hardware/bt_pan.h"
29#include "utils/Log.h"
30#include "android_runtime/AndroidRuntime.h"
31
32#include <string.h>
33
34#include <cutils/log.h>
35#define info(fmt, ...)  ALOGI ("%s(L%d): " fmt,__FUNCTION__, __LINE__,  ## __VA_ARGS__)
36#define debug(fmt, ...) ALOGD ("%s(L%d): " fmt,__FUNCTION__, __LINE__,  ## __VA_ARGS__)
37#define warn(fmt, ...) ALOGW ("## WARNING : %s(L%d): " fmt "##",__FUNCTION__, __LINE__, ## __VA_ARGS__)
38#define error(fmt, ...) ALOGE ("## ERROR : %s(L%d): " fmt "##",__FUNCTION__, __LINE__, ## __VA_ARGS__)
39#define asrt(s) if(!(s)) ALOGE ("## %s(L%d): ASSERT %s failed! ##",__FUNCTION__, __LINE__, #s)
40
41
42namespace android {
43
44static jmethodID method_onConnectStateChanged;
45static jmethodID method_onControlStateChanged;
46
47static const btpan_interface_t *sPanIf = NULL;
48static jobject mCallbacksObj = NULL;
49static JNIEnv *sCallbackEnv = NULL;
50
51static bool checkCallbackThread() {
52    sCallbackEnv = getCallbackEnv();
53
54    JNIEnv* env = AndroidRuntime::getJNIEnv();
55    if (sCallbackEnv != env || sCallbackEnv == NULL) return false;
56    return true;
57}
58
59static void control_state_callback(btpan_control_state_t state, int local_role, bt_status_t error,
60                const char* ifname) {
61    debug("state:%d, local_role:%d, ifname:%s", state, local_role, ifname);
62    CHECK_CALLBACK_ENV
63    jstring js_ifname = sCallbackEnv->NewStringUTF(ifname);
64    sCallbackEnv->CallVoidMethod(mCallbacksObj, method_onControlStateChanged, (jint)local_role, (jint)state,
65                                (jint)error, js_ifname);
66    sCallbackEnv->DeleteLocalRef(js_ifname);
67}
68
69static void connection_state_callback(btpan_connection_state_t state, bt_status_t error, const bt_bdaddr_t *bd_addr,
70                                      int local_role, int remote_role) {
71    jbyteArray addr;
72    debug("state:%d, local_role:%d, remote_role:%d", state, local_role, remote_role);
73    CHECK_CALLBACK_ENV
74    addr = sCallbackEnv->NewByteArray(sizeof(bt_bdaddr_t));
75    if (!addr) {
76        error("Fail to new jbyteArray bd addr for PAN channel state");
77        checkAndClearExceptionFromCallback(sCallbackEnv, __FUNCTION__);
78        return;
79    }
80    sCallbackEnv->SetByteArrayRegion(addr, 0, sizeof(bt_bdaddr_t), (jbyte *) bd_addr);
81
82    sCallbackEnv->CallVoidMethod(mCallbacksObj, method_onConnectStateChanged, addr, (jint) state,
83                                    (jint)error, (jint)local_role, (jint)remote_role);
84    checkAndClearExceptionFromCallback(sCallbackEnv, __FUNCTION__);
85    sCallbackEnv->DeleteLocalRef(addr);
86}
87
88static btpan_callbacks_t sBluetoothPanCallbacks = {
89    sizeof(sBluetoothPanCallbacks),
90    control_state_callback,
91    connection_state_callback
92};
93
94// Define native functions
95
96static void classInitNative(JNIEnv* env, jclass clazz) {
97    int err;
98    bt_status_t status;
99
100    method_onConnectStateChanged = env->GetMethodID(clazz, "onConnectStateChanged",
101                                                    "([BIIII)V");
102    method_onControlStateChanged = env->GetMethodID(clazz, "onControlStateChanged",
103                                                    "(IIILjava/lang/String;)V");
104
105    info("succeeds");
106}
107static const bt_interface_t* btIf;
108
109static void initializeNative(JNIEnv *env, jobject object) {
110    debug("pan");
111    if(btIf)
112        return;
113
114    if ( (btIf = getBluetoothInterface()) == NULL) {
115        error("Bluetooth module is not loaded");
116        return;
117    }
118
119    if (sPanIf !=NULL) {
120         ALOGW("Cleaning up Bluetooth PAN Interface before initializing...");
121         sPanIf->cleanup();
122         sPanIf = NULL;
123    }
124
125    if (mCallbacksObj != NULL) {
126         ALOGW("Cleaning up Bluetooth PAN callback object");
127         env->DeleteGlobalRef(mCallbacksObj);
128         mCallbacksObj = NULL;
129    }
130
131    if ( (sPanIf = (btpan_interface_t *)
132          btIf->get_profile_interface(BT_PROFILE_PAN_ID)) == NULL) {
133        error("Failed to get Bluetooth PAN Interface");
134        return;
135    }
136
137    mCallbacksObj = env->NewGlobalRef(object);
138
139    bt_status_t status;
140    if ( (status = sPanIf->init(&sBluetoothPanCallbacks)) != BT_STATUS_SUCCESS) {
141        error("Failed to initialize Bluetooth PAN, status: %d", status);
142        sPanIf = NULL;
143        if (mCallbacksObj != NULL) {
144            ALOGW("initialization failed: Cleaning up Bluetooth PAN callback object");
145            env->DeleteGlobalRef(mCallbacksObj);
146            mCallbacksObj = NULL;
147        }
148        return;
149    }
150}
151
152static void cleanupNative(JNIEnv *env, jobject object) {
153    bt_status_t status;
154    if (!btIf) return;
155
156    if (sPanIf !=NULL) {
157        ALOGW("Cleaning up Bluetooth PAN Interface...");
158        sPanIf->cleanup();
159        sPanIf = NULL;
160    }
161
162    if (mCallbacksObj != NULL) {
163        ALOGW("Cleaning up Bluetooth PAN callback object");
164        env->DeleteGlobalRef(mCallbacksObj);
165        mCallbacksObj = NULL;
166    }
167    btIf = NULL;
168}
169
170static jboolean enablePanNative(JNIEnv *env, jobject object, jint local_role) {
171    bt_status_t status = BT_STATUS_FAIL;
172    debug("in");
173    jbyte *addr;
174    if (sPanIf)
175        status = sPanIf->enable(local_role);
176    debug("out");
177    return status == BT_STATUS_SUCCESS ? JNI_TRUE : JNI_FALSE;
178}
179static jint getPanLocalRoleNative(JNIEnv *env, jobject object) {
180    debug("in");
181    int local_role = 0;
182    jbyte *addr;
183    if (sPanIf)
184        local_role  = sPanIf->get_local_role();
185    debug("out");
186    return (jint)local_role;
187}
188
189
190
191static jboolean connectPanNative(JNIEnv *env, jobject object, jbyteArray address,
192                                 jint src_role, jint dest_role) {
193    debug("in");
194    bt_status_t status;
195    jbyte *addr;
196    jboolean ret = JNI_TRUE;
197    if (!sPanIf) return JNI_FALSE;
198
199    addr = env->GetByteArrayElements(address, NULL);
200    if (!addr) {
201        error("Bluetooth device address null");
202        return JNI_FALSE;
203    }
204
205    if ((status = sPanIf->connect((bt_bdaddr_t *) addr, src_role, dest_role)) !=
206         BT_STATUS_SUCCESS) {
207        error("Failed PAN channel connection, status: %d", status);
208        ret = JNI_FALSE;
209    }
210    env->ReleaseByteArrayElements(address, addr, 0);
211
212    return ret;
213}
214
215static jboolean disconnectPanNative(JNIEnv *env, jobject object, jbyteArray address) {
216    bt_status_t status;
217    jbyte *addr;
218    jboolean ret = JNI_TRUE;
219    if (!sPanIf) return JNI_FALSE;
220
221    addr = env->GetByteArrayElements(address, NULL);
222    if (!addr) {
223        error("Bluetooth device address null");
224        return JNI_FALSE;
225    }
226
227    if ( (status = sPanIf->disconnect((bt_bdaddr_t *) addr)) !=
228         BT_STATUS_SUCCESS) {
229        error("Failed disconnect pan channel, status: %d", status);
230        ret = JNI_FALSE;
231    }
232    env->ReleaseByteArrayElements(address, addr, 0);
233
234    return ret;
235}
236
237static JNINativeMethod sMethods[] = {
238    {"classInitNative", "()V", (void *) classInitNative},
239    {"initializeNative", "()V", (void *) initializeNative},
240    {"cleanupNative", "()V", (void *) cleanupNative},
241    {"connectPanNative", "([BII)Z", (void *) connectPanNative},
242    {"enablePanNative", "(I)Z", (void *) enablePanNative},
243    {"getPanLocalRoleNative", "()I", (void *) getPanLocalRoleNative},
244    {"disconnectPanNative", "([B)Z", (void *) disconnectPanNative},
245    // TBD cleanup
246};
247
248int register_com_android_bluetooth_pan(JNIEnv* env)
249{
250    return jniRegisterNativeMethods(env, "com/android/bluetooth/pan/PanService",
251                                    sMethods, NELEM(sMethods));
252}
253
254}
255