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//
// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2023
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#include <td/telegram/Client.h>
#include <td/telegram/td_api.h>
#include <td/tl/tl_jni_object.h>
#include <cstdint>
#include <cstdlib>
#include <string>
#include <utility>
namespace td_jni {
static td::td_api::object_ptr<td::td_api::Function> fetch_function(JNIEnv *env, jobject function) {
td::jni::reset_parse_error();
auto result = td::td_api::Function::fetch(env, function);
if (td::jni::have_parse_error()) {
std::abort();
}
return result;
}
static td::ClientManager *get_manager() {
return td::ClientManager::get_manager_singleton();
}
static jint Client_createNativeClient(JNIEnv *env, jclass clazz) {
return static_cast<jint>(get_manager()->create_client_id());
}
static void Client_nativeClientSend(JNIEnv *env, jclass clazz, jint client_id, jlong id, jobject function) {
get_manager()->send(static_cast<std::int32_t>(client_id), static_cast<std::uint64_t>(id),
fetch_function(env, function));
}
static jint Client_nativeClientReceive(JNIEnv *env, jclass clazz, jintArray client_ids, jlongArray ids,
jobjectArray events, jdouble timeout) {
jsize events_size = env->GetArrayLength(ids); // client_ids, ids and events must be of equal size
if (events_size == 0) {
return 0;
}
jsize result_size = 0;
auto *manager = get_manager();
auto response = manager->receive(timeout);
while (response.object) {
auto client_id = static_cast<jint>(response.client_id);
env->SetIntArrayRegion(client_ids, result_size, 1, &client_id);
auto request_id = static_cast<jlong>(response.request_id);
env->SetLongArrayRegion(ids, result_size, 1, &request_id);
jobject object;
response.object->store(env, object);
env->SetObjectArrayElement(events, result_size, object);
env->DeleteLocalRef(object);
result_size++;
if (result_size == events_size) {
break;
}
response = manager->receive(0);
}
return result_size;
}
static jobject Client_nativeClientExecute(JNIEnv *env, jclass clazz, jobject function) {
jobject result;
td::ClientManager::execute(fetch_function(env, function))->store(env, result);
return result;
}
static jstring Object_toString(JNIEnv *env, jobject object) {
return td::jni::to_jstring(env, to_string(td::td_api::Object::fetch(env, object)));
}
static jstring Function_toString(JNIEnv *env, jobject object) {
return td::jni::to_jstring(env, to_string(td::td_api::Function::fetch(env, object)));
}
static constexpr jint JAVA_VERSION = JNI_VERSION_1_6;
static JavaVM *java_vm;
static jobject log_message_handler;
static void on_log_message(int verbosity_level, const char *log_message) {
auto env = td::jni::get_jni_env(java_vm, JAVA_VERSION);
if (env == nullptr) {
return;
}
jobject handler = env->NewLocalRef(log_message_handler);
if (!handler) {
return;
}
jclass handler_class = env->GetObjectClass(handler);
if (handler_class) {
jmethodID on_log_message_method = env->GetMethodID(handler_class, "onLogMessage", "(ILjava/lang/String;)V");
if (on_log_message_method) {
jstring log_message_str = td::jni::to_jstring(env.get(), log_message);
if (log_message_str) {
env->CallVoidMethod(handler, on_log_message_method, static_cast<jint>(verbosity_level), log_message_str);
env->DeleteLocalRef((jobject)log_message_str);
}
}
env->DeleteLocalRef((jobject)handler_class);
}
env->DeleteLocalRef(handler);
}
static void Client_nativeClientSetLogMessageHandler(JNIEnv *env, jclass clazz, jint max_verbosity_level,
jobject new_log_message_handler) {
if (log_message_handler) {
td::ClientManager::set_log_message_callback(0, nullptr);
jobject old_log_message_handler = log_message_handler;
log_message_handler = jobject();
env->DeleteGlobalRef(old_log_message_handler);
}
if (new_log_message_handler) {
log_message_handler = env->NewGlobalRef(new_log_message_handler);
if (!log_message_handler) {
// out of memory
return;
}
td::ClientManager::set_log_message_callback(static_cast<int>(max_verbosity_level), on_log_message);
}
}
static jint register_native(JavaVM *vm) {
JNIEnv *env;
if (vm->GetEnv(reinterpret_cast<void **>(&env), JAVA_VERSION) != JNI_OK) {
return -1;
}
java_vm = vm;
auto register_method = [env](jclass clazz, std::string name, std::string signature, auto function_ptr) {
td::jni::register_native_method(env, clazz, std::move(name), std::move(signature),
reinterpret_cast<void *>(function_ptr));
};
auto client_class = td::jni::get_jclass(env, PACKAGE_NAME "/Client");
auto object_class = td::jni::get_jclass(env, PACKAGE_NAME "/TdApi$Object");
auto function_class = td::jni::get_jclass(env, PACKAGE_NAME "/TdApi$Function");
#define TD_OBJECT "L" PACKAGE_NAME "/TdApi$Object;"
#define TD_FUNCTION "L" PACKAGE_NAME "/TdApi$Function;"
register_method(client_class, "createNativeClient", "()I", Client_createNativeClient);
register_method(client_class, "nativeClientSend", "(IJ" TD_FUNCTION ")V", Client_nativeClientSend);
register_method(client_class, "nativeClientReceive", "([I[J[" TD_OBJECT "D)I", Client_nativeClientReceive);
register_method(client_class, "nativeClientExecute", "(" TD_FUNCTION ")" TD_OBJECT, Client_nativeClientExecute);
register_method(client_class, "nativeClientSetLogMessageHandler", "(IL" PACKAGE_NAME "/Client$LogMessageHandler;)V",
Client_nativeClientSetLogMessageHandler);
register_method(object_class, "toString", "()Ljava/lang/String;", Object_toString);
register_method(function_class, "toString", "()Ljava/lang/String;", Function_toString);
#undef TD_FUNCTION
#undef TD_OBJECT
td::jni::init_vars(env, PACKAGE_NAME);
td::td_api::set_package_name(PACKAGE_NAME);
return JAVA_VERSION;
}
} // namespace td_jni
JNIEXPORT jint JNICALL JNI_OnLoad(JavaVM *vm, void *reserved) {
static jint jni_version = td_jni::register_native(vm); // call_once
return jni_version;
}
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