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td.cpp
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td.cpp
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// This file has been modified towards a simplifier and more modern design provided by https://github.com/Bannerets/tdl/blob/develop/tdl-tdlib-addon/td.cpp
#include <iostream>
#include <string>
#include <vector>
#ifdef HAVE_UNISTD_H
#include <chrono>
#include <map>
#include <mutex>
#include <unistd.h>
#include <thread>
std::map<int64_t, int> clientFdMapping;
std::mutex clientFdMutex;
#endif
using namespace std;
#include <napi.h>
#include "td/td/telegram/td_json_client.h"
#include "td/td/telegram/td_log.h"
Napi::Number td_client_create(const Napi::CallbackInfo& info) {
Napi::Env env = info.Env();
void* client = td_json_client_create();
return Napi::Number::New(env, (uintptr_t)client);
}
// param 1: int client_id
void td_client_destroy(const Napi::CallbackInfo& info) {
int64_t client_id = info[0].As<Napi::Number>().Int64Value();
auto client = (void*) client_id;
std::lock_guard<std::mutex> guard(clientFdMutex);
if (clientFdMapping.find(client_id) != clientFdMapping.end()) {
int fd = clientFdMapping.at(client_id);
close(fd);
}
clientFdMapping.erase(client_id);
td_json_client_destroy(client);
}
// param 1: int client_id
// param 2: string request
void td_client_send(const Napi::CallbackInfo& info) {
auto client = (void *)info[0].As<Napi::Number>().Int64Value();
std::string request_str = info[1].As<Napi::String>().Utf8Value();
const char* request = request_str.c_str();
td_json_client_send(client, request);
}
#ifdef HAVE_UNISTD_H
void ReceiveLoopThread() {
while (true) {
if (!clientFdMapping.empty()) {
std::lock_guard<std::mutex> guard(clientFdMutex);
for (auto const &clientFd : clientFdMapping) {
auto client = (void*) clientFd.first;
int fd = clientFd.second;
const char *data = td_json_client_receive(client, 0);
if (data != NULL) {
size_t length = strlen(data);
write(fd, data, length);
}
}
}
std::this_thread::sleep_for(chrono::milliseconds(3));
}
}
#endif
class ReceiverAsyncWorker : public Napi::AsyncWorker {
public:
ReceiverAsyncWorker(
const Napi::Function& callback,
void* client,
double timeout
) : Napi::AsyncWorker(callback), client(client), timeout(timeout)
{}
protected:
void Execute() override {
const char* result = td_json_client_receive(client, timeout);
res = std::string(result == NULL ? "" : result);
}
void OnOK() override {
Napi::Env env = Env();
auto str = Napi::String::New(env, res);
Callback().MakeCallback(Receiver().Value(), {env.Null(), str});
}
void OnError(const Napi::Error &e) override {
Napi::Env env = Env();
Callback().MakeCallback(Receiver().Value(), {e.Value(), env.Undefined()});
}
private:
void *client;
double timeout;
std::string res;
};
void td_client_receive_async(const Napi::CallbackInfo& info) {
auto client = (void*) info[0].As<Napi::Number>().Int64Value();
double timeout = info[1].As<Napi::Number>().DoubleValue();
Napi::Function cb = info[2].As<Napi::Function>();
(new ReceiverAsyncWorker(cb, client, timeout))->Queue();
}
// param 1: int client_id
// param 2: double timeout
Napi::Array td_client_receive(const Napi::CallbackInfo& info) {
Napi::Env env = info.Env();
auto client = (void *)info[0].As<Napi::Number>().Int64Value();
double timeout = (double) info[1].As<Napi::Number>().DoubleValue();
Napi::Array datas = Napi::Array::New(env);
const char* data = td_json_client_receive(client, timeout);
int length = 0;
while (data) {
datas.Set(length, Napi::String::New(env, data));
length++;
data = td_json_client_receive(client, 0);
}
return datas;
}
Napi::String td_client_execute(const Napi::CallbackInfo& info) {
Napi::Env env = info.Env();
auto client = (void*) info[0].As<Napi::Number>().Int64Value();
std::string request_str = info[1].As<Napi::String>().Utf8Value();
const char* request = request_str.c_str();
const char* response = td_json_client_execute(client, request);
if (response == NULL) return Napi::String::New(env, "");
return Napi::String::New(env, response);
}
#ifdef HAVE_UNISTD_H
Napi::Array create_pipe_fd(const Napi::CallbackInfo &info) {
Napi::Env env = info.Env();
int pipefd[2];
if (pipe(pipefd) == -1) {
// ERROR
throw Napi::Error::New(env, std::strerror(errno));
}
Napi::Array fdarr = Napi::Array::New(env, 2);
fdarr.Set((int) 0, Napi::Number::New(env, pipefd[0]));
fdarr.Set((int) 1, Napi::Number::New(env, pipefd[1]));
return fdarr;
}
void register_receiver_fd(const Napi::CallbackInfo& info) {
int64_t client_id = info[0].As<Napi::Number>().Int64Value();
int32_t fd = info[1].As<Napi::Number>().Int32Value();
std::lock_guard<std::mutex> guard(clientFdMutex);
clientFdMapping.erase(client_id);
clientFdMapping.insert(std::map<int64_t, int>::value_type(client_id, fd));
}
void unregister_receiver_fd(const Napi::CallbackInfo& info) {
int64_t client_id = info[0].As<Napi::Number>().Int64Value();
std::lock_guard<std::mutex> guard(clientFdMutex);
clientFdMapping.erase(client_id);
}
void clear_receiver_fd(const Napi::CallbackInfo& info) {
int64_t client_id = info[0].As<Napi::Number>().Int64Value();
clientFdMapping.clear();
}
#endif
Napi::Object Init(Napi::Env env, Napi::Object exports) {
exports.Set(Napi::String::New(env, "td_client_create"),
Napi::Function::New(env, td_client_create));
exports.Set(Napi::String::New(env, "td_client_send"),
Napi::Function::New(env, td_client_send));
exports.Set(Napi::String::New(env, "td_client_receive"),
Napi::Function::New(env, td_client_receive));
exports.Set(Napi::String::New(env, "td_client_receive_async"),
Napi::Function::New(env, td_client_receive_async));
exports.Set(Napi::String::New(env, "td_client_destroy"),
Napi::Function::New(env, td_client_destroy));
exports.Set(Napi::String::New(env, "td_client_execute"),
Napi::Function::New(env, td_client_execute));
#ifdef HAVE_UNISTD_H
exports.Set(Napi::String::New(env, "create_pipe_fd"),
Napi::Function::New(env, create_pipe_fd));
exports.Set(Napi::String::New(env, "register_receiver_fd"),
Napi::Function::New(env, register_receiver_fd));
exports.Set(Napi::String::New(env, "unregister_receiver_fd"),
Napi::Function::New(env, unregister_receiver_fd));
exports.Set(Napi::String::New(env, "clear_receiver_fd"),
Napi::Function::New(env, clear_receiver_fd));
std::thread pollClient(ReceiveLoopThread);
pollClient.detach();
#endif
return exports;
}
NODE_API_MODULE(addon, Init)