| /* |
| * Copyright (C) 2012 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include "NfcJniUtil.h" |
| |
| #include <android-base/stringprintf.h> |
| #include <base/logging.h> |
| #include <errno.h> |
| #include <log/log.h> |
| #include <nativehelper/JNIHelp.h> |
| #include <nativehelper/ScopedLocalRef.h> |
| |
| #include "RoutingManager.h" |
| |
| using android::base::StringPrintf; |
| |
| extern bool nfc_debug_enabled; |
| |
| /******************************************************************************* |
| ** |
| ** Function: JNI_OnLoad |
| ** |
| ** Description: Register all JNI functions with Java Virtual Machine. |
| ** jvm: Java Virtual Machine. |
| ** reserved: Not used. |
| ** |
| ** Returns: JNI version. |
| ** |
| *******************************************************************************/ |
| jint JNI_OnLoad(JavaVM* jvm, void*) { |
| DLOG_IF(INFO, nfc_debug_enabled) << StringPrintf("%s: enter", __func__); |
| JNIEnv* e = NULL; |
| |
| LOG(INFO) << StringPrintf("NFC Service: loading nci JNI"); |
| |
| // Check JNI version |
| if (jvm->GetEnv((void**)&e, JNI_VERSION_1_6)) return JNI_ERR; |
| |
| if (android::register_com_android_nfc_NativeNfcManager(e) == -1) |
| return JNI_ERR; |
| if (android::register_com_android_nfc_NativeLlcpServiceSocket(e) == -1) |
| return JNI_ERR; |
| if (android::register_com_android_nfc_NativeLlcpSocket(e) == -1) |
| return JNI_ERR; |
| if (android::register_com_android_nfc_NativeNfcTag(e) == -1) return JNI_ERR; |
| if (android::register_com_android_nfc_NativeLlcpConnectionlessSocket(e) == -1) |
| return JNI_ERR; |
| if (android::register_com_android_nfc_NativeP2pDevice(e) == -1) |
| return JNI_ERR; |
| if (RoutingManager::getInstance().registerJniFunctions(e) == -1) |
| return JNI_ERR; |
| DLOG_IF(INFO, nfc_debug_enabled) << StringPrintf("%s: exit", __func__); |
| return JNI_VERSION_1_6; |
| } |
| |
| namespace android { |
| |
| /******************************************************************************* |
| ** |
| ** Function: nfc_jni_cache_object |
| ** |
| ** Description: |
| ** |
| ** Returns: Status code. |
| ** |
| *******************************************************************************/ |
| int nfc_jni_cache_object(JNIEnv* e, const char* className, jobject* cachedObj) { |
| ScopedLocalRef<jclass> cls(e, e->FindClass(className)); |
| if (cls.get() == NULL) { |
| LOG(ERROR) << StringPrintf("%s: find class error", __func__); |
| return -1; |
| } |
| |
| jmethodID ctor = e->GetMethodID(cls.get(), "<init>", "()V"); |
| ScopedLocalRef<jobject> obj(e, e->NewObject(cls.get(), ctor)); |
| if (obj.get() == NULL) { |
| LOG(ERROR) << StringPrintf("%s: create object error", __func__); |
| return -1; |
| } |
| |
| *cachedObj = e->NewGlobalRef(obj.get()); |
| if (*cachedObj == NULL) { |
| LOG(ERROR) << StringPrintf("%s: global ref error", __func__); |
| return -1; |
| } |
| return 0; |
| } |
| |
| /******************************************************************************* |
| ** |
| ** Function: nfc_jni_get_nfc_socket_handle |
| ** |
| ** Description: Get the value of "mHandle" member variable. |
| ** e: JVM environment. |
| ** o: Java object. |
| ** |
| ** Returns: Value of mHandle. |
| ** |
| *******************************************************************************/ |
| int nfc_jni_get_nfc_socket_handle(JNIEnv* e, jobject o) { |
| ScopedLocalRef<jclass> c(e, e->GetObjectClass(o)); |
| jfieldID f = e->GetFieldID(c.get(), "mHandle", "I"); |
| return e->GetIntField(o, f); |
| } |
| |
| /******************************************************************************* |
| ** |
| ** Function: nfc_jni_get_nat |
| ** |
| ** Description: Get the value of "mNative" member variable. |
| ** e: JVM environment. |
| ** o: Java object. |
| ** |
| ** Returns: Pointer to the value of mNative. |
| ** |
| *******************************************************************************/ |
| struct nfc_jni_native_data* nfc_jni_get_nat(JNIEnv* e, jobject o) { |
| ScopedLocalRef<jclass> c(e, e->GetObjectClass(o)); |
| jfieldID f = e->GetFieldID(c.get(), "mNative", "J"); |
| /* Retrieve native structure address */ |
| return (struct nfc_jni_native_data*)e->GetLongField(o, f); |
| } |
| |
| /******************************************************************************* |
| ** |
| ** Function nfc_jni_cache_object_local |
| ** |
| ** Description Allocates a java object and calls it's constructor |
| ** |
| ** Returns -1 on failure, 0 on success |
| ** |
| *******************************************************************************/ |
| int nfc_jni_cache_object_local(JNIEnv* e, const char* className, |
| jobject* cachedObj) { |
| ScopedLocalRef<jclass> cls(e, e->FindClass(className)); |
| if (cls.get() == NULL) { |
| LOG(ERROR) << StringPrintf("%s: find class error", __func__); |
| return -1; |
| } |
| |
| jmethodID ctor = e->GetMethodID(cls.get(), "<init>", "()V"); |
| jobject obj = e->NewObject(cls.get(), ctor); |
| if (obj == NULL) { |
| LOG(ERROR) << StringPrintf("%s: create object error", __func__); |
| return -1; |
| } |
| |
| *cachedObj = obj; |
| if (*cachedObj == NULL) { |
| LOG(ERROR) << StringPrintf("%s: global ref error", __func__); |
| return -1; |
| } |
| return 0; |
| } |
| |
| } // namespace android |