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/*
* Copyright (C) 2010 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 <semaphore.h>
#include <errno.h>
#include "com_android_nfc.h"
namespace android {
extern void nfc_jni_llcp_transport_socket_err_callback(void* pContext,
uint8_t nErrCode);
/*
* Callbacks
*/
static void nfc_jni_llcp_accept_socket_callback(void* pContext,
NFCSTATUS status)
{
struct nfc_jni_callback_data * pCallbackData = (struct nfc_jni_callback_data *) pContext;
LOG_CALLBACK("nfc_jni_llcp_accept_socket_callback", status);
/* Report the callback status and wake up the caller */
pCallbackData->status = status;
sem_post(&pCallbackData->sem);
}
/*
* Utils
*/
static phLibNfc_Handle getIncomingSocket(nfc_jni_native_monitor_t * pMonitor,
phLibNfc_Handle hServerSocket)
{
nfc_jni_listen_data_t * pListenData;
phLibNfc_Handle pIncomingSocket = NULL;
/* Look for a pending incoming connection on the current server */
LIST_FOREACH(pListenData, &pMonitor->incoming_socket_head, entries)
{
if (pListenData->pServerSocket == hServerSocket)
{
pIncomingSocket = pListenData->pIncomingSocket;
LIST_REMOVE(pListenData, entries);
free(pListenData);
break;
}
}
return pIncomingSocket;
}
/*
* Methods
*/
static jobject com_NativeLlcpServiceSocket_doAccept(JNIEnv *e, jobject o, jint miu, jint rw, jint linearBufferLength)
{
NFCSTATUS ret = NFCSTATUS_SUCCESS;
struct timespec ts;
phLibNfc_Llcp_sSocketOptions_t sOptions;
phNfc_sData_t sWorkingBuffer;
jfieldID f;
jclass clsNativeLlcpSocket;
jobject clientSocket = NULL;
struct nfc_jni_callback_data cb_data;
phLibNfc_Handle hIncomingSocket, hServerSocket;
nfc_jni_native_monitor_t * pMonitor = nfc_jni_get_monitor();
/* Create the local semaphore */
if (!nfc_cb_data_init(&cb_data, NULL))
{
goto clean_and_return;
}
/* Get server socket */
hServerSocket = nfc_jni_get_nfc_socket_handle(e,o);
/* Set socket options with the socket options of the service */
sOptions.miu = miu;
sOptions.rw = rw;
/* Allocate Working buffer length */
sWorkingBuffer.buffer = (uint8_t*)malloc((miu*rw)+miu+linearBufferLength);
sWorkingBuffer.length = (miu*rw)+ miu + linearBufferLength;
while(cb_data.status != NFCSTATUS_SUCCESS)
{
/* Wait for tag Notification */
pthread_mutex_lock(&pMonitor->incoming_socket_mutex);
while ((hIncomingSocket = getIncomingSocket(pMonitor, hServerSocket)) == NULL) {
pthread_cond_wait(&pMonitor->incoming_socket_cond, &pMonitor->incoming_socket_mutex);
}
pthread_mutex_unlock(&pMonitor->incoming_socket_mutex);
/* Accept the incomming socket */
TRACE("phLibNfc_Llcp_Accept()");
REENTRANCE_LOCK();
ret = phLibNfc_Llcp_Accept( hIncomingSocket,
&sOptions,
&sWorkingBuffer,
nfc_jni_llcp_transport_socket_err_callback,
nfc_jni_llcp_accept_socket_callback,
(void*)&cb_data);
REENTRANCE_UNLOCK();
if(ret != NFCSTATUS_PENDING)
{
// NOTE: This may happen if link went down since incoming socket detected, then
// just drop it and start a new accept loop.
ALOGD("phLibNfc_Llcp_Accept() returned 0x%04x[%s]", ret, nfc_jni_get_status_name(ret));
continue;
}
TRACE("phLibNfc_Llcp_Accept() returned 0x%04x[%s]", ret, nfc_jni_get_status_name(ret));
/* Wait for callback response */
if(sem_wait(&cb_data.sem))
{
ALOGE("Failed to wait for semaphore (errno=0x%08x)", errno);
goto clean_and_return;
}
if(cb_data.status != NFCSTATUS_SUCCESS)
{
/* NOTE: Do not generate an error if the accept failed to avoid error in server application */
ALOGD("Failed to accept incoming socket 0x%04x[%s]", cb_data.status, nfc_jni_get_status_name(cb_data.status));
}
}
/* Create new LlcpSocket object */
if(nfc_jni_cache_object(e,"com/android/nfc/dhimpl/NativeLlcpSocket",&(clientSocket)) == -1)
{
ALOGD("LLCP Socket creation error");
goto clean_and_return;
}
/* Get NativeConnectionOriented class object */
clsNativeLlcpSocket = e->GetObjectClass(clientSocket);
if(e->ExceptionCheck())
{
ALOGD("LLCP Socket get class object error");
goto clean_and_return;
}
/* Set socket handle */
f = e->GetFieldID(clsNativeLlcpSocket, "mHandle", "I");
e->SetIntField(clientSocket, f,(jint)hIncomingSocket);
/* 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);
TRACE("socket handle 0x%02x: MIU = %d, RW = %d\n",hIncomingSocket, miu, rw);
clean_and_return:
nfc_cb_data_deinit(&cb_data);
return clientSocket;
}
static jboolean com_NativeLlcpServiceSocket_doClose(JNIEnv *e, jobject o)
{
NFCSTATUS ret;
phLibNfc_Handle hLlcpSocket;
nfc_jni_native_monitor_t * pMonitor = nfc_jni_get_monitor();
TRACE("Close Service socket");
/* Retrieve socket handle */
hLlcpSocket = nfc_jni_get_nfc_socket_handle(e,o);
pthread_mutex_lock(&pMonitor->incoming_socket_mutex);
/* TODO: implement accept abort */
pthread_cond_broadcast(&pMonitor->incoming_socket_cond);
pthread_mutex_unlock(&pMonitor->incoming_socket_mutex);
REENTRANCE_LOCK();
ret = phLibNfc_Llcp_Close(hLlcpSocket);
REENTRANCE_UNLOCK();
if(ret == NFCSTATUS_SUCCESS)
{
TRACE("Close Service socket OK");
return TRUE;
}
else
{
ALOGD("Close Service socket KO");
return FALSE;
}
}
/*
* JNI registration.
*/
static JNINativeMethod gMethods[] =
{
{"doAccept", "(III)Lcom/android/nfc/dhimpl/NativeLlcpSocket;",
(void *)com_NativeLlcpServiceSocket_doAccept},
{"doClose", "()Z",
(void *)com_NativeLlcpServiceSocket_doClose},
};
int register_com_android_nfc_NativeLlcpServiceSocket(JNIEnv *e)
{
return jniRegisterNativeMethods(e,
"com/android/nfc/dhimpl/NativeLlcpServiceSocket",
gMethods, NELEM(gMethods));
}
} // namespace android
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