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    method_onConnectStateChanged = env->GetMethodID(clazz, "onConnectStateChanged",
98                                                    "([BIIII)V");
99    method_onControlStateChanged = env->GetMethodID(clazz, "onControlStateChanged",
100                                                    "(IIILjava/lang/String;)V");
101
102    info("succeeds");
103}
104static const bt_interface_t* btIf;
105
106static void initializeNative(JNIEnv *env, jobject object) {
107    debug("pan");
108    if(btIf)
109        return;
110
111    if ( (btIf = getBluetoothInterface()) == NULL) {
112        error("Bluetooth module is not loaded");
113        return;
114    }
115
116    if (sPanIf !=NULL) {
117         ALOGW("Cleaning up Bluetooth PAN Interface before initializing...");
118         sPanIf->cleanup();
119         sPanIf = NULL;
120    }
121
122    if (mCallbacksObj != NULL) {
123         ALOGW("Cleaning up Bluetooth PAN callback object");
124         env->DeleteGlobalRef(mCallbacksObj);
125         mCallbacksObj = NULL;
126    }
127
128    if ( (sPanIf = (btpan_interface_t *)
129          btIf->get_profile_interface(BT_PROFILE_PAN_ID)) == NULL) {
130        error("Failed to get Bluetooth PAN Interface");
131        return;
132    }
133
134    mCallbacksObj = env->NewGlobalRef(object);
135
136    bt_status_t status;
137    if ( (status = sPanIf->init(&sBluetoothPanCallbacks)) != BT_STATUS_SUCCESS) {
138        error("Failed to initialize Bluetooth PAN, status: %d", status);
139        sPanIf = NULL;
140        if (mCallbacksObj != NULL) {
141            ALOGW("initialization failed: Cleaning up Bluetooth PAN callback object");
142            env->DeleteGlobalRef(mCallbacksObj);
143            mCallbacksObj = NULL;
144        }
145        return;
146    }
147}
148
149static void cleanupNative(JNIEnv *env, jobject object) {
150    if (!btIf) return;
151
152    if (sPanIf !=NULL) {
153        ALOGW("Cleaning up Bluetooth PAN Interface...");
154        sPanIf->cleanup();
155        sPanIf = NULL;
156    }
157
158    if (mCallbacksObj != NULL) {
159        ALOGW("Cleaning up Bluetooth PAN callback object");
160        env->DeleteGlobalRef(mCallbacksObj);
161        mCallbacksObj = NULL;
162    }
163    btIf = NULL;
164}
165
166static jboolean enablePanNative(JNIEnv *env, jobject object, jint local_role) {
167    bt_status_t status = BT_STATUS_FAIL;
168    debug("in");
169    if (sPanIf)
170        status = sPanIf->enable(local_role);
171    debug("out");
172    return status == BT_STATUS_SUCCESS ? JNI_TRUE : JNI_FALSE;
173}
174static jint getPanLocalRoleNative(JNIEnv *env, jobject object) {
175    debug("in");
176    int local_role = 0;
177    if (sPanIf)
178        local_role  = sPanIf->get_local_role();
179    debug("out");
180    return (jint)local_role;
181}
182
183
184
185static jboolean connectPanNative(JNIEnv *env, jobject object, jbyteArray address,
186                                 jint src_role, jint dest_role) {
187    debug("in");
188    bt_status_t status;
189    jbyte *addr;
190    jboolean ret = JNI_TRUE;
191    if (!sPanIf) return JNI_FALSE;
192
193    addr = env->GetByteArrayElements(address, NULL);
194    if (!addr) {
195        error("Bluetooth device address null");
196        return JNI_FALSE;
197    }
198
199    if ((status = sPanIf->connect((bt_bdaddr_t *) addr, src_role, dest_role)) !=
200         BT_STATUS_SUCCESS) {
201        error("Failed PAN channel connection, status: %d", status);
202        ret = JNI_FALSE;
203    }
204    env->ReleaseByteArrayElements(address, addr, 0);
205
206    return ret;
207}
208
209static jboolean disconnectPanNative(JNIEnv *env, jobject object, jbyteArray address) {
210    bt_status_t status;
211    jbyte *addr;
212    jboolean ret = JNI_TRUE;
213    if (!sPanIf) return JNI_FALSE;
214
215    addr = env->GetByteArrayElements(address, NULL);
216    if (!addr) {
217        error("Bluetooth device address null");
218        return JNI_FALSE;
219    }
220
221    if ( (status = sPanIf->disconnect((bt_bdaddr_t *) addr)) !=
222         BT_STATUS_SUCCESS) {
223        error("Failed disconnect pan channel, status: %d", status);
224        ret = JNI_FALSE;
225    }
226    env->ReleaseByteArrayElements(address, addr, 0);
227
228    return ret;
229}
230
231static JNINativeMethod sMethods[] = {
232    {"classInitNative", "()V", (void *) classInitNative},
233    {"initializeNative", "()V", (void *) initializeNative},
234    {"cleanupNative", "()V", (void *) cleanupNative},
235    {"connectPanNative", "([BII)Z", (void *) connectPanNative},
236    {"enablePanNative", "(I)Z", (void *) enablePanNative},
237    {"getPanLocalRoleNative", "()I", (void *) getPanLocalRoleNative},
238    {"disconnectPanNative", "([B)Z", (void *) disconnectPanNative},
239    // TBD cleanup
240};
241
242int register_com_android_bluetooth_pan(JNIEnv* env)
243{
244    return jniRegisterNativeMethods(env, "com/android/bluetooth/pan/PanService",
245                                    sMethods, NELEM(sMethods));
246}
247
248}
249