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Native optimized JNI to Java calls

This commit is contained in:
M66B 2016-01-22 16:41:27 +01:00
parent c7557ff2fa
commit 7b9019e68f
1 changed files with 33 additions and 43 deletions
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76
app/src/main/jni/netguard/netguard.c
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@ -75,8 +75,6 @@ jint JNI_OnLoad(JavaVM *vm, void *reserved) {
const char *packet = "eu/faircode/netguard/Packet";
clsPacket = jniGlobalRef(env, jniFindClass(env, packet));
// TODO find methods
return JNI_VERSION_1_6;
}
@ -374,24 +372,14 @@ void handle_events(void *a) {
}
void report_exit(struct arguments *args) {
JNIEnv *env = args->env;
jclass cls = (*env)->GetObjectClass(env, args->instance);
jmethodID mid = (*env)->GetMethodID(env, cls, "selectExit", "(Z)V");
if (mid == 0)
log_android(ANDROID_LOG_ERROR, "selectExit method not found");
else {
jboolean planned = stopping;
(*env)->CallVoidMethod(env, args->instance, mid, planned);
jclass cls = (*args->env)->GetObjectClass(args->env, args->instance);
jmethodID mid = jniGetMethodID(args->env, cls, "selectExit", "(Z)V");
jthrowable ex = (*env)->ExceptionOccurred(env);
if (ex) {
log_android(ANDROID_LOG_ERROR, "selectExit exception");
(*env)->ExceptionDescribe(env);
(*env)->ExceptionClear(env);
(*env)->DeleteLocalRef(env, ex);
}
}
(*env)->DeleteLocalRef(env, cls);
jboolean planned = stopping;
(*args->env)->CallVoidMethod(args->env, args->instance, mid, planned);
jniCheckException(args->env);
(*args->env)->DeleteLocalRef(args->env, cls);
}
void check_sessions(const struct arguments *args) {
@ -1697,32 +1685,18 @@ jint get_uid(const int protocol, const int version,
}
int protect_socket(struct arguments *args, int socket) {
JNIEnv *env = args->env;
jobject instance = args->instance;
jclass cls = (*args->env)->GetObjectClass(args->env, args->instance);
jmethodID mid = jniGetMethodID(args->env, cls, "protect", "(I)Z");
jclass cls = (*env)->GetObjectClass(env, instance);
jmethodID mid = (*env)->GetMethodID(env, cls, "protect", "(I)Z");
if (mid == 0) {
log_android(ANDROID_LOG_ERROR, "protect method not found");
return -1;
}
jboolean isProtected = (*args->env)->CallBooleanMethod(args->env, args->instance, mid, socket);
jniCheckException(args->env);
jboolean isProtected = (*env)->CallBooleanMethod(env, instance, mid, socket);
if (!isProtected) {
log_android(ANDROID_LOG_ERROR, "protect failed");
log_android(ANDROID_LOG_ERROR, "protect socket failed");
return -1;
}
jthrowable ex = (*env)->ExceptionOccurred(env);
if (ex) {
log_android(ANDROID_LOG_ERROR, "protect exception");
(*env)->ExceptionDescribe(env);
(*env)->ExceptionClear(env);
(*env)->DeleteLocalRef(env, ex);
return -1;
}
(*env)->DeleteLocalRef(env, cls);
(*args->env)->DeleteLocalRef(args->env, cls);
return 0;
}
@ -1765,10 +1739,28 @@ jclass jniFindClass(JNIEnv *env, const char *name) {
return cls;
}
jmethodID method_protect = NULL;
jmethodID method_logPacket = NULL;
jmethodID jniGetMethodID(JNIEnv *env, jclass cls, const char *name, const char *signature) {
if (strcmp(name, "protect") == 0 && method_protect != NULL)
return method_protect;
if (strcmp(name, "logPacket") == 0 && method_logPacket != NULL)
return method_logPacket;
jmethodID method = (*env)->GetMethodID(env, cls, name, signature);
if (method == NULL)
log_android(ANDROID_LOG_ERROR, "Method %s%s", name, signature);
else {
if (strcmp(name, "protect") == 0) {
method_protect = method;
log_android(ANDROID_LOG_INFO, "Cached method ID protect");
}
else if (strcmp(name, "logPacket") == 0) {
method_logPacket = method;
log_android(ANDROID_LOG_INFO, "Cached method ID logPacket");
}
}
return method;
}
@ -1828,9 +1820,7 @@ void log_packet(
#endif
JNIEnv *env = args->env;
jobject instance = args->instance;
jclass clsService = (*env)->GetObjectClass(env, instance);
jclass clsService = (*env)->GetObjectClass(env, args->instance);
const char *signature = "(Leu/faircode/netguard/Packet;)V";
jmethodID logPacket = jniGetMethodID(env, clsService, "logPacket", signature);
@ -1858,7 +1848,7 @@ void log_packet(
(*env)->SetIntField(env, objPacket, jniGetFieldID(env, clsPacket, "uid", "I"), uid);
(*env)->SetBooleanField(env, objPacket, jniGetFieldID(env, clsPacket, "allowed", "Z"), allowed);
(*env)->CallVoidMethod(env, instance, logPacket, objPacket);
(*env)->CallVoidMethod(env, args->instance, logPacket, objPacket);
jniCheckException(env);
(*env)->DeleteLocalRef(env, jdest);