nci/jni/NativeLlcpServiceSocket.cpp

/*
 * 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 "OverrideLog.h"
#include "NfcJniUtil.h"
#include "NfcAdaptation.h"
#include "PeerToPeer.h"
#include "JavaClassConstants.h"

#include <JNIHelp.h>

extern "C"
{
    #include "nfa_api.h"
    #include "nfa_p2p_api.h"
}


namespace android
{


/*******************************************************************************
**
** Function:        nativeLlcpServiceSocket_doAccept
**
** Description:     Accept a connection request from a peer.
**                  e: JVM environment.
**                  o: Java object.
**                  miu: Maximum information unit.
**                  rw: Receive window.
**                  linearBufferLength: Not used.
**
** Returns:         LlcpSocket Java object.
**
*******************************************************************************/
static jobject nativeLlcpServiceSocket_doAccept(JNIEnv *e, jobject o, jint miu, jint rw, jint /*linearBufferLength*/)
{
    jobject     clientSocket = NULL;
    jclass      clsNativeLlcpSocket = NULL;
    jfieldID    f = 0;
    PeerToPeer::tJNI_HANDLE serverHandle; //handle of the local server
    bool        stat = false;
    PeerToPeer::tJNI_HANDLE connHandle = PeerToPeer::getInstance().getNewJniHandle ();

    ALOGD ("%s: enter", __FUNCTION__);

    serverHandle = (PeerToPeer::tJNI_HANDLE) nfc_jni_get_nfc_socket_handle (e, o);

    stat = PeerToPeer::getInstance().accept (serverHandle, connHandle, miu, rw);

    if (! stat)
    {
        ALOGE ("%s: fail accept", __FUNCTION__);
        goto TheEnd;
    }

    /* Create new LlcpSocket object */
    if (nfc_jni_cache_object_local(e, gNativeLlcpSocketClassName, &(clientSocket)) == -1)
    {
        ALOGE ("%s: fail create NativeLlcpSocket", __FUNCTION__);
        goto TheEnd;
    }

    /* Get NativeConnectionOriented class object */
    clsNativeLlcpSocket = e->GetObjectClass (clientSocket);
    if (e->ExceptionCheck())
    {
        e->ExceptionClear();
        ALOGE ("%s: get class object error", __FUNCTION__);
        goto TheEnd;
    }

    /* Set socket handle */
    f = e->GetFieldID (clsNativeLlcpSocket, "mHandle", "I");
    e->SetIntField (clientSocket, f, (jint) connHandle);

    /* Set socket MIU */
    f = e->GetFieldID (clsNativeLlcpSocket, "mLocalMiu", "I");
    e->SetIntField (clientSocket, f, (jint)miu);

    /* Set socket RW */
    f = e->GetFieldID (clsNativeLlcpSocket, "mLocalRw", "I");
    e->SetIntField (clientSocket, f, (jint)rw);

TheEnd:
    ALOGD ("%s: exit", __FUNCTION__);
    return clientSocket;
}


/*******************************************************************************
**
** Function:        nativeLlcpServiceSocket_doClose
**
** Description:     Close a server socket.
**                  e: JVM environment.
**                  o: Java object.
**
** Returns:         True if ok.
**
*******************************************************************************/
static jboolean nativeLlcpServiceSocket_doClose(JNIEnv *e, jobject o)
{
    ALOGD ("%s: enter", __FUNCTION__);
    PeerToPeer::tJNI_HANDLE jniServerHandle = 0;
    bool stat = false;

    jniServerHandle = nfc_jni_get_nfc_socket_handle (e, o);

    stat = PeerToPeer::getInstance().deregisterServer (jniServerHandle);

    ALOGD ("%s: exit", __FUNCTION__);
    return JNI_TRUE;
}


/*****************************************************************************
**
** Description:     JNI functions
**
*****************************************************************************/
static JNINativeMethod gMethods[] =
{
    {"doAccept", "(III)Lcom/android/nfc/dhimpl/NativeLlcpSocket;", (void*) nativeLlcpServiceSocket_doAccept},
    {"doClose", "()Z", (void*) nativeLlcpServiceSocket_doClose},
};


/*******************************************************************************
**
** Function:        register_com_android_nfc_NativeLlcpServiceSocket
**
** Description:     Regisgter JNI functions with Java Virtual Machine.
**                  e: Environment of JVM.
**
** Returns:         Status of registration.
**
*******************************************************************************/
int register_com_android_nfc_NativeLlcpServiceSocket (JNIEnv* e)
{
    return jniRegisterNativeMethods (e, gNativeLlcpServiceSocketClassName,
            gMethods, NELEM(gMethods));
}


} //namespace android