Simple-Web-Server/client_https.hpp at master · LizardByte-infrastructure/Simple-Web-Server · GitHub

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#ifndef SIMPLE_WEB_CLIENT_HTTPS_HPP
#defineSIMPLE_WEB_CLIENT_HTTPS_HPP

#include"client_http.hpp"

#ifdef ASIO_STANDALONE
#include<asio/ssl.hpp>
#else
#include<boost/asio/ssl.hpp>
#endif

namespaceSimpleWeb {
usingHTTPS = asio::ssl::stream<asio::ip::tcp::socket>;

template <>
classClient<HTTPS> : public ClientBase<HTTPS> {
public:
/**
 * Constructs a client object.
 *
 * @param server_port_path Server resource given by host[:port][/path]
 * @param verify_certificate Set to true (default) to verify the server's certificate and hostname according to RFC 2818.
 * @param certification_file If non-empty, sends the given certification file to server. Requires private_key_file.
 * @param private_key_file If non-empty, specifies the file containing the private key for certification_file. Requires certification_file.
 * @param verify_file If non-empty, use this certificate authority file to perform verification.
*/
Client(const std::string &server_port_path, bool verify_certificate = true, const std::string &certification_file = std::string(),
const std::string &private_key_file = std::string(), const std::string &verify_file = std::string())
 : ClientBase<HTTPS>::ClientBase(server_port_path, 443),
#if (defined(ASIO_STANDALONE) && ASIO_VERSION >= 101300) || BOOST_ASIO_VERSION >= 101300
context(asio::ssl::context::tls_client) {
// Disabling TLS 1.0 and 1.1 (see RFC 8996)
 context.set_options(asio::ssl::context::no_tlsv1);
 context.set_options(asio::ssl::context::no_tlsv1_1);
#else
context(asio::ssl::context::tlsv12) {
#endif
if(certification_file.size() > 0 && private_key_file.size() > 0) {
 context.use_certificate_chain_file(certification_file);
 context.use_private_key_file(private_key_file, asio::ssl::context::pem);
 }

if(verify_certificate)
#if (defined(ASIO_STANDALONE) && ASIO_VERSION >= 103300) || BOOST_ASIO_VERSION >= 103300
 context.set_verify_callback(asio::ssl::host_name_verification(host));
#else
 context.set_verify_callback(asio::ssl::rfc2818_verification(host));
#endif

if(verify_file.size() > 0)
 context.load_verify_file(verify_file);
else
 context.set_default_verify_paths();

if(verify_certificate)
 context.set_verify_mode(asio::ssl::verify_peer);
else
 context.set_verify_mode(asio::ssl::verify_none);
 }

protected:
 asio::ssl::context context;

/// Ignore for end of file and SSL_R_SHORT_READ error codes
 error_code clean_error_code(const error_code &ec) override {
return ec == error::eof || ec == asio::ssl::error::stream_truncated ? error_code() : ec;
 }

 std::shared_ptr<Connection> create_connection() noexceptoverride {
return std::make_shared<Connection>(handler_runner, *io_service, context);
 }

voidconnect(const std::shared_ptr<Session> &session) override {
if(!session->connection->socket->lowest_layer().is_open()) {
auto resolver = std::make_shared<asio::ip::tcp::resolver>(*io_service);
 session->connection->set_timeout(this->config.timeout_connect);
async_resolve(*resolver, *host_port, [this, session, resolver](const error_code &ec, resolver_results results) {
 session->connection->cancel_timeout();
auto lock = session->connection->handler_runner->continue_lock();
if(!lock)
return;
if(!ec) {
 session->connection->set_timeout(this->config.timeout_connect);
asio::async_connect(session->connection->socket->lowest_layer(), results, [this, session, resolver](const error_code &ec, async_connect_endpoint /*endpoint*/) {
 session->connection->cancel_timeout();
auto lock = session->connection->handler_runner->continue_lock();
if(!lock)
return;
if(!ec) {
 asio::ip::tcp::no_delay option(true);
 error_code ec;
 session->connection->socket->lowest_layer().set_option(option, ec);

if(!this->config.proxy_server.empty()) {
auto write_buffer = std::make_shared<asio::streambuf>();
 std::ostream write_stream(write_buffer.get());
auto host_port = this->host + ':' + std::to_string(this->port);
 write_stream << "CONNECT " + host_port + " HTTP/1.1\r\n"
 << "Host: " << host_port << "\r\n\r\n";
 session->connection->set_timeout(this->config.timeout_connect);
asio::async_write(session->connection->socket->next_layer(), *write_buffer, [this, session, write_buffer](const error_code &ec, std::size_t/*bytes_transferred*/) {
 session->connection->cancel_timeout();
auto lock = session->connection->handler_runner->continue_lock();
if(!lock)
return;
if(!ec) {
 std::shared_ptr<Response> response(newResponse(this->config.max_response_streambuf_size, session->connection));
 session->connection->set_timeout(this->config.timeout_connect);
asio::async_read_until(session->connection->socket->next_layer(), response->streambuf, "\r\n\r\n", [this, session, response](const error_code &ec, std::size_t/*bytes_transferred*/) {
 session->connection->cancel_timeout();
auto lock = session->connection->handler_runner->continue_lock();
if(!lock)
return;
if(response->streambuf.size() == response->streambuf.max_size()) {
 session->callback(make_error_code::make_error_code(errc::message_size));
return;
 }

if(!ec) {
if(!ResponseMessage::parse(response->content, response->http_version, response->status_code, response->header))
 session->callback(make_error_code::make_error_code(errc::protocol_error));
else {
if(response->status_code.compare(0, 3, "200") != 0)
 session->callback(make_error_code::make_error_code(errc::permission_denied));
else
this->handshake(session);
 }
 }
else
 session->callback(ec);
 });
 }
else
 session->callback(ec);
 });
 }
else
this->handshake(session);
 }
else
 session->callback(ec);
 });
 }
else
 session->callback(ec);
 });
 }
else
write(session);
 }

voidhandshake(const std::shared_ptr<Session> &session) {
SSL_set_tlsext_host_name(session->connection->socket->native_handle(), this->host.c_str());

 session->connection->set_timeout(this->config.timeout_connect);
 session->connection->socket->async_handshake(asio::ssl::stream_base::client, [this, session](const error_code &ec) {
 session->connection->cancel_timeout();
auto lock = session->connection->handler_runner->continue_lock();
if(!lock)
return;
if(!ec)
this->write(session);
else
 session->callback(ec);
 });
 }
 };
} // namespace SimpleWeb

#endif/* SIMPLE_WEB_CLIENT_HTTPS_HPP */