// JNI entry point, This is executed when the Java virtual machine attaches to the native library.
JNIEXPORT jint JNICALL JNI_OnLoad(JavaVM *vm, void *UNUSED(reserved)) {
/* Grab the currently running virtual machine so we can attach to it in
* functions that are not called from java. ( I.E. ThreadProc )
*/
jvm = vm;
JNIEnv *env = NULL;
if ((*jvm)->GetEnv(jvm, (void **)(&env), jni_version) == JNI_OK) {
#ifdef DEBUG
fprintf(stdout, "JNI_OnLoad(): GetEnv() successful.\n");
#endif
// Create all the global class references onload to prevent class loader
// issues with JNLP and some IDE's.
if (CreateJNIGlobals() == RETURN_FAILURE) {
#ifdef DEBUG
fprintf(stderr, "JNI_OnLoad(): CreateJNIGlobals() failed!\n");
#endif
ThrowFatalError("Failed to locate one or more required classes.");
}
// Run platform specific load items.
OnLibraryLoad();
// Set java properties from native sources.
SetNativeProperties(env);
}
else {
#ifdef DEBUG
fprintf(stderr, "JNI_OnLoad(): GetEnv() failed!\n");
#endif
ThrowFatalError("Failed to aquire JNI interface pointer");
}
#ifdef DEBUG
fprintf(stdout, "JNI_Load(): JNI Loaded.\n");
#endif
return jni_version;
}
int CreateJNIGlobals() {
int status = RETURN_FAILURE;
JNIEnv *env = NULL;
if ((*jvm)->GetEnv(jvm, (void **)(&env), jni_version) == JNI_OK) {
// Class and getInstance method id for the GlobalScreen Object.
jclass clsLocalThread = (*env)->FindClass(env, "java/lang/Thread");
if (clsLocalThread != NULL) {
clsThread = (jclass) (*env)->NewGlobalRef(env, clsLocalThread);
// Get the method ID for GlobalScreen.getInstance()
idCurrentThread = (*env)->GetStaticMethodID(env, clsThread, "currentThread", "()Ljava/lang/Thread;");
#ifdef DEBUG
if (idCurrentThread == NULL) {
fprintf(stderr, "CreateJNIGlobals(): Failed to acquire the method ID for Thread.currentThread()!\n");
}
#endif
// Get the method ID for GlobalScreen.dispatchEvent().
idSetName = (*env)->GetMethodID(env, clsThread, "setName", "(Ljava/lang/String;)V");
#ifdef DEBUG
if (idSetName == NULL) {
fprintf(stderr, "CreateJNIGlobals(): Failed to acquire the method ID for Thread.setName(String)!\n");
}
#endif
}
#ifdef DEBUG
else {
fprintf(stderr, "CreateJNIGlobals(): Failed to locate the Thread class!\n");
}
#endif
// Class and getInstance method id for the GlobalScreen Object.
jclass clsLocalGlobalScreen = (*env)->FindClass(env, "org/jnativehook/GlobalScreen");
if (clsLocalGlobalScreen != NULL) {
clsGlobalScreen = (jclass) (*env)->NewGlobalRef(env, clsLocalGlobalScreen);
// Get the method ID for GlobalScreen.getInstance()
idGetInstance = (*env)->GetStaticMethodID(env, clsGlobalScreen, "getInstance", "()Lorg/jnativehook/GlobalScreen;");
#ifdef DEBUG
if (idGetInstance == NULL) {
fprintf(stderr, "CreateJNIGlobals(): Failed to acquire the method ID for GlobalScreen.getInstance()!\n");
}
#endif
// Get the method ID for GlobalScreen.dispatchEvent().
idDispatchEvent = (*env)->GetMethodID(env, clsGlobalScreen, "dispatchEvent", "(Lorg/jnativehook/NativeInputEvent;)V");
#ifdef DEBUG
if (idDispatchEvent == NULL) {
fprintf(stderr, "CreateJNIGlobals(): Failed to acquire the method ID for GlobalScreen.dispatchEvent()!\n");
}
#endif
// Get the method ID for GlobalScreen.startEventDispatcher().
idStartEventDispatcher = (*env)->GetMethodID(env, clsGlobalScreen, "startEventDispatcher", "()V");
#ifdef DEBUG
if (idStartEventDispatcher == NULL) {
fprintf(stderr, "CreateJNIGlobals(): Failed to acquire the method ID for GlobalScreen.startEventDispatcher()!\n");
}
#endif
// Get the method ID for GlobalScreen.stopEventDispatcher().
idStopEventDispatcher = (*env)->GetMethodID(env, clsGlobalScreen, "stopEventDispatcher", "()V");
#ifdef DEBUG
if (idStopEventDispatcher == NULL) {
fprintf(stderr, "CreateJNIGlobals(): Failed to acquire the method ID for GlobalScreen.stopEventDispatcher()!\n");
}
#endif
}
#ifdef DEBUG
else {
fprintf(stderr, "CreateJNIGlobals(): Failed to locate the GlobalScreen class!\n");
}
#endif
// Class and Constructor for the NativeKeyEvent Object.
jclass clsLocalKeyEvent = (*env)->FindClass(env, "org/jnativehook/keyboard/NativeKeyEvent");
if (clsLocalKeyEvent != NULL) {
clsKeyEvent = (jclass) (*env)->NewGlobalRef(env, clsLocalKeyEvent);
idKeyEvent = (*env)->GetMethodID(env, clsKeyEvent, "<init>", "(IJIIICI)V");
#ifdef DEBUG
if (idKeyEvent == NULL) {
fprintf(stderr, "CreateJNIGlobals(): Failed to acquire the method ID for NativeKeyEvent.NativeKeyEvent(int, long, int, int, int, int)!\n");
}
#endif
}
#ifdef DEBUG
else {
fprintf(stderr, "CreateJNIGlobals(): Failed to locate the NativeKeyEvent class!\n");
}
#endif
// Class and Constructor for the NativeMouseEvent Object.
jclass clsLocalMouseEvent = (*env)->FindClass(env, "org/jnativehook/mouse/NativeMouseEvent");
if (clsLocalMouseEvent != NULL) {
clsMouseEvent = (jclass) (*env)->NewGlobalRef(env, clsLocalMouseEvent);
idMouseButtonEvent = (*env)->GetMethodID(env, clsMouseEvent, "<init>", "(IJIIIII)V");
#ifdef DEBUG
if (idMouseButtonEvent == NULL) {
fprintf(stderr, "CreateJNIGlobals(): Failed to acquire the method ID for NativeMouseEvent.NativeMouseEvent(int, long, int, int, int, int)!\n");
}
#endif
idMouseMotionEvent = (*env)->GetMethodID(env, clsMouseEvent, "<init>", "(IJIIII)V");
#ifdef DEBUG
if (idMouseMotionEvent == NULL) {
fprintf(stderr, "CreateJNIGlobals(): Failed to acquire the method ID for NativeMouseEvent.NativeMouseEvent(int, long, int, int, int)!\n");
}
#endif
}
#ifdef DEBUG
else {
fprintf(stderr, "CreateJNIGlobals(): Failed to locate the NativeMouseEvent class!\n");
}
#endif
// Class and Constructor for the NativeMouseWheelEvent Object.
jclass clsLocalMouseWheelEvent = (*env)->FindClass(env, "org/jnativehook/mouse/NativeMouseWheelEvent");
if (clsLocalMouseWheelEvent != NULL) {
clsMouseWheelEvent = (jclass) (*env)->NewGlobalRef(env, clsLocalMouseWheelEvent);
idMouseWheelEvent = (*env)->GetMethodID(env, clsMouseWheelEvent, "<init>", "(IJIIIIIII)V");
#ifdef DEBUG
if (idMouseWheelEvent == NULL) {
fprintf(stderr, "CreateJNIGlobals(): Failed to acquire the method ID for NativeMouseWheelEvent.NativeMouseWheelEvent(int, long, int, int, int, int, int, int)!\n");
}
#endif
}
#ifdef DEBUG
else {
fprintf(stderr, "CreateJNIGlobals(): Failed to locate the NativeMouseWheelEvent class!\n");
}
#endif
// Check and make sure everything is correct.
if ((*env)->ExceptionCheck(env) == JNI_FALSE) {
status = RETURN_SUCCESS;
}
}
else {
// We cant do a whole lot of anything if we cant attach to the current thread.
#ifdef DEBUG
fprintf(stderr, "CreateJNIGlobals(): GetEnv() failed!\n");
#endif
ThrowFatalError("Failed to aquire JNI interface pointer");
}
return status;
}
