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/*
* Copyright 2013, The Android Open Source Project
* Copyright 2013 Oleg Smirnov
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#if ENABLE(WEB_SOCKETS)
#include "Logging.h"
#include "WebSocketBridge.h"
#include "WebCoreJni.h"
#include <JNIHelp.h>
#include <JNIUtility.h>
using namespace android;
static const char* javaWebSocketClass = "android/webkit/HTML5WebSocket";
namespace WebCore {
struct WebSocketBridge::JavaGlue
{
jobject m_javaProxy;
jmethodID m_getInstance;
jmethodID m_send;
jmethodID m_close;
};
WebSocketBridge::WebSocketBridge(SocketStreamHandle* client, const String& uri)
: m_streamHandle(client)
{
JNIEnv* env = JSC::Bindings::getJNIEnv();
if (!env)
return;
jclass clazz = env->FindClass(javaWebSocketClass);
if (!clazz)
return;
m_glue = new JavaGlue;
m_glue->m_getInstance = env->GetStaticMethodID(clazz, "getInstance", "(ILjava/lang/String;)Landroid/webkit/HTML5WebSocket;");
m_glue->m_send = env->GetMethodID(clazz, "send", "([B)V");
m_glue->m_close = env->GetMethodID(clazz, "close", "()V");
jstring jUrl = env->NewString((unsigned short *)uri.characters(), uri.length());
jobject obj = env->CallStaticObjectMethod(clazz, m_glue->m_getInstance, this, jUrl);
m_glue->m_javaProxy = env->NewGlobalRef(obj);
// Clean up
env->DeleteLocalRef(obj);
env->DeleteLocalRef(clazz);
env->DeleteLocalRef(jUrl);
checkException(env);
}
WebSocketBridge::~WebSocketBridge()
{
if (m_glue->m_javaProxy) {
if (JNIEnv* env = JSC::Bindings::getJNIEnv())
env->DeleteGlobalRef(m_glue->m_javaProxy);
}
}
int WebSocketBridge::send(const char* data, int length)
{
if (!data || length <= 0)
return length;
JNIEnv* env = JSC::Bindings::getJNIEnv();
if (!env || !m_glue->m_javaProxy || !m_glue->m_send)
return 0;
jbyteArray jByteArray = env->NewByteArray(length);
if (!jByteArray)
return 0;
env->SetByteArrayRegion(jByteArray, 0, length, reinterpret_cast<const jbyte*>(data));
env->CallVoidMethod(m_glue->m_javaProxy, m_glue->m_send, jByteArray);
env->DeleteLocalRef(jByteArray);
checkException(env);
return length;
}
void WebSocketBridge::close()
{
JNIEnv* env = JSC::Bindings::getJNIEnv();
if (!env || !m_glue->m_javaProxy || !m_glue->m_close)
return;
env->CallVoidMethod(m_glue->m_javaProxy, m_glue->m_close);
checkException(env);
}
void WebSocketBridge::didWebSocketConnected()
{
m_streamHandle->socketConnectedCallback();
}
void WebSocketBridge::didWebSocketClosed()
{
m_streamHandle->socketClosedCallback();
}
void WebSocketBridge::didWebSocketMessage(const char* data, int length)
{
m_streamHandle->socketReadyReadCallback(data, length);
}
void WebSocketBridge::didWebSocketError()
{
m_streamHandle->socketErrorCallback();
}
} // namespace WebCore
namespace android {
static void OnWebSocketConnected(JNIEnv* env, jobject obj, int pointer) {
if (pointer) {
WebCore::WebSocketBridge* bridge = reinterpret_cast<WebCore::WebSocketBridge*>(pointer);
bridge->didWebSocketConnected();
}
}
static void OnWebSocketClosed(JNIEnv* env, jobject obj, int pointer) {
if (pointer) {
WebCore::WebSocketBridge* bridge = reinterpret_cast<WebCore::WebSocketBridge*>(pointer);
bridge->didWebSocketClosed();
}
}
static void OnWebSocketMessage(JNIEnv* env, jobject obj, int pointer, jbyteArray dataArray, int length) {
if (pointer) {
WebCore::WebSocketBridge* bridge = reinterpret_cast<WebCore::WebSocketBridge*>(pointer);
if (jbyte* data = env->GetByteArrayElements(dataArray, NULL)) {
bridge->didWebSocketMessage(reinterpret_cast<const char*>(data), length);
env->ReleaseByteArrayElements(dataArray, data, JNI_ABORT);
}
}
}
static void OnWebSocketError(JNIEnv* env, jobject obj, int pointer) {
if (pointer) {
WebCore::WebSocketBridge* bridge = reinterpret_cast<WebCore::WebSocketBridge*>(pointer);
bridge->didWebSocketError();
}
}
/*
* JNI registration
*/
static JNINativeMethod g_WebSocketMethods[] = {
{ "nativeOnWebSocketConnected", "(I)V", (void*) OnWebSocketConnected },
{ "nativeOnWebSocketClosed", "(I)V", (void*) OnWebSocketClosed },
{ "nativeOnWebSocketMessage", "(I[BI)V", (void*) OnWebSocketMessage },
{ "nativeOnWebSocketError", "(I)V", (void*) OnWebSocketError }
};
int registerWebSockets(JNIEnv* env)
{
#ifndef NDEBUG
jclass webSocket = env->FindClass(javaWebSocketClass);
ALOG_ASSERT(webSocket, "Unable to find class");
env->DeleteLocalRef(webSocket);
#endif
return jniRegisterNativeMethods(env, javaWebSocketClass, g_WebSocketMethods, NELEM(g_WebSocketMethods));
}
} // namespace android
#endif // ENABLE(WEB_SOCKETS)
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