NASFAQ/connections/ws/ssl_ws.cpp
2022-12-10 14:50:31 +01:00

272 lines
8.0 KiB
C++

#include "ssl_ws.h"
// TODO: rewrite this in the header
namespace ws {
connection_metadata::connection_metadata(client *endpoint, int id, websocketpp::connection_hdl hdl, std::string uri)
: m_id(id)
, m_hdl(hdl)
, m_status("Connecting")
, m_uri(uri)
, m_server("N/A")
, m_endpoint(endpoint) // I really hate this, maybe the whole send function altogether should be in this class?
{}
void connection_metadata::on_open(client *c, websocketpp::connection_hdl hdl) {
websocketpp::lib::error_code ec;
m_status = "Open";
client::connection_ptr con = c->get_con_from_hdl(hdl);
m_server = con->get_response_header("Server");
sleep(1); /* How to wait for status? */
m_endpoint->send(m_hdl, "2probe", websocketpp::frame::opcode::text, ec);
if (ec) {
std::cout << "> Error sending 2probe: " << ec.message() << std::endl;
return;
}
sleep(1); /* How to wait for status? */
m_endpoint->send(m_hdl, "5", websocketpp::frame::opcode::text, ec);
if (ec) {
std::cout << "> Error sending 5: " << ec.message() << std::endl;
return;
}
}
void connection_metadata::on_fail(client *c, websocketpp::connection_hdl hdl) {
m_status = "Failed";
client::connection_ptr con = c->get_con_from_hdl(hdl);
m_server = con->get_response_header("Server");
m_error_reason = con->get_ec().message();
}
void connection_metadata::on_close(client *c, websocketpp::connection_hdl hdl) {
m_status = "Closed";
client::connection_ptr con = c->get_con_from_hdl(hdl);
std::stringstream s;
s << "close code: " << con->get_remote_close_code() << " ("
<< websocketpp::close::status::get_string(con->get_remote_close_code())
<< "), close reason: " << con->get_remote_close_reason();
m_error_reason = s.str();
}
void connection_metadata::on_message(websocketpp::connection_hdl hdl, client::message_ptr msg) {
if (msg->get_opcode() == websocketpp::frame::opcode::text) {
std::string payload = msg->get_payload();
if (payload == "2") {
websocketpp::lib::error_code ec;
m_endpoint->send(m_hdl, "3", websocketpp::frame::opcode::text, ec);
if (ec) {
std::cout << "> Error sending pong 3: " << ec.message() << std::endl;
return;
}
} else if (payload.substr(0, 2) == "42") {
// Raw messages are of the form "42[PAYLOAD]"
std::string payload_format = payload.substr(3, payload.length() - 4);
push_message(payload_format);
}
}
}
websocketpp::connection_hdl connection_metadata::get_hdl() const {
return m_hdl;
}
int connection_metadata::get_id() const {
return m_id;
}
std::string connection_metadata::get_status() const {
return m_status;
}
bool connection_metadata::msg_queue_empty(void) {
return m_msg_q.empty();
}
std::string connection_metadata::pop_message(void) {
std::unique_lock<std::mutex> lock(m_msg_q_mutex);
while(m_msg_q.empty())
{
// release lock as long as the wait and reaquire it afterwards.
m_msg_q_cdt.wait(lock);
}
std::string ret = m_msg_q.front();
m_msg_q.pop();
return ret;
}
void connection_metadata::push_message(std::string msg) {
std::lock_guard<std::mutex> lock(m_msg_q_mutex);
m_msg_q.push(msg);
m_msg_q_cdt.notify_one();
}
std::ostream & operator<< (std::ostream & out, connection_metadata const & data) {
out
<< "> URI: " << data.m_uri << "\n"
<< "> Status: " << data.m_status << "\n"
<< "> Remote Server: " << (data.m_server.empty() ? "None Specified" : data.m_server) << "\n"
<< "> Error/close reason: " << (data.m_error_reason.empty() ? "N/A" : data.m_error_reason);
return out;
}
/*******************************************************************************************
Connection endpoint
*******************************************************************************************/
/**
TLS initialization.
*/
static context_ptr on_tls_init() {
// establishes a SSL connection
context_ptr ctx = std::make_shared<boost::asio::ssl::context>(boost::asio::ssl::context::sslv23);
try {
ctx->set_options(boost::asio::ssl::context::default_workarounds |
boost::asio::ssl::context::no_sslv2 |
boost::asio::ssl::context::no_sslv3 |
boost::asio::ssl::context::single_dh_use);
} catch (std::exception &e) {
std::cout << "Error in context pointer: " << e.what() << std::endl;
}
return ctx;
}
websocket_endpoint::websocket_endpoint() {
m_endpoint.clear_access_channels(websocketpp::log::alevel::all);
m_endpoint.clear_error_channels(websocketpp::log::elevel::all);
m_endpoint.init_asio();
m_endpoint.set_tls_init_handler(bind(&on_tls_init));
m_endpoint.start_perpetual();
m_thread.reset(new websocketpp::lib::thread(&client::run, &m_endpoint));
}
websocket_endpoint::~websocket_endpoint() {
m_endpoint.stop_perpetual();
for (con_list::const_iterator it = m_connection_list.begin(); it != m_connection_list.end(); ++it) {
if (it->second->get_status() != "Open") {
// Close only open connections
continue;
}
std::cout << "> Closing connection " << it->second->get_id() << std::endl;
websocketpp::lib::error_code ec;
m_endpoint.close(it->second->get_hdl(), websocketpp::close::status::going_away, "", ec);
if (ec) {
std::cout << "> Error closing connection " << it->second->get_id() << ": "
<< ec.message() << std::endl;
}
}
}
int websocket_endpoint::connect(std::string const &uri) {
websocketpp::lib::error_code ec;
client::connection_ptr con = m_endpoint.get_connection(uri, ec);
con->append_header("Cookie", "holosesh=s%3AxmS8xBlcEeYVHLiKXg");
if(ec) {
std::cout << ">Connect initialization error: " << ec.message() << std::endl;
return -1;
}
int new_id = m_next_id++;
connection_metadata::ptr metadata_ptr(new connection_metadata(&m_endpoint, new_id, con->get_handle(), uri));
m_connection_list[new_id] = metadata_ptr;
con->set_open_handler(websocketpp::lib::bind(
&connection_metadata::on_open,
metadata_ptr,
&m_endpoint,
websocketpp::lib::placeholders::_1
));
con->set_fail_handler(websocketpp::lib::bind(
&connection_metadata::on_fail,
metadata_ptr,
&m_endpoint,
websocketpp::lib::placeholders::_1
));
con->set_message_handler(websocketpp::lib::bind(
&connection_metadata::on_message,
metadata_ptr,
websocketpp::lib::placeholders::_1,
websocketpp::lib::placeholders::_2
));
m_endpoint.connect(con);
return new_id;
}
void websocket_endpoint::close(int id, websocketpp::close::status::value code, std::string reason) {
websocketpp::lib::error_code ec;
con_list::iterator metadata_it = m_connection_list.find(id);
if (metadata_it == m_connection_list.end()) {
std::cout << "> No connection found with id " << id << std::endl;
return;
}
m_endpoint.close(metadata_it->second->get_hdl(), code, "", ec);
if (ec) {
std::cout << "> Error initiating close: " << ec.message() << std::endl;
}
}
void websocket_endpoint::send(int id, std::string message) {
websocketpp::lib::error_code ec;
con_list::iterator metadata_it = m_connection_list.find(id);
if (metadata_it == m_connection_list.end()) {
std::cout << "> No connection found with id " << id << std::endl;
return;
}
m_endpoint.send(metadata_it->second->get_hdl(), message, websocketpp::frame::opcode::text, ec);
if (ec) {
std::cout << "> Error sending message: " << ec.message() << std::endl;
return;
}
}
// TODO This should read to a buffer (void function)
std::string websocket_endpoint::read(int id) const {
con_list::const_iterator metadata_it = m_connection_list.find(id);
if(metadata_it == m_connection_list.end()) {
std::cout << "> No connection found with id " << id << std::endl;
return "";
}
return metadata_it->second->pop_message();
}
connection_metadata::ptr websocket_endpoint::get_metadata(int id) const {
con_list::const_iterator metadata_it = m_connection_list.find(id);
if(metadata_it == m_connection_list.end()) {
return connection_metadata::ptr();
} else {
return metadata_it->second;
}
}
}