tdlight-telegram-bot-api/telegram-bot-api/HttpConnection.cpp

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//
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// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2021
//
// 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 "telegram-bot-api/HttpConnection.h"
#include "telegram-bot-api/Query.h"
#include "td/net/HttpHeaderCreator.h"
#include "td/utils/common.h"
#include "td/utils/JsonBuilder.h"
#include "td/utils/logging.h"
#include "td/utils/Parser.h"
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#include "td/utils/SliceBuilder.h"
namespace telegram_bot_api {
void HttpConnection::handle(td::unique_ptr<td::HttpQuery> http_query,
td::ActorOwn<td::HttpInboundConnection> connection) {
CHECK(connection_->empty());
connection_ = std::move(connection);
LOG(DEBUG) << "Handle " << *http_query;
td::Parser url_path_parser(http_query->url_path_);
if (url_path_parser.peek_char() != '/') {
return send_http_error(404, "Not Found: absolute URI is specified in the Request-Line");
}
if (!url_path_parser.try_skip("/bot")) {
return send_http_error(404, "Not Found");
}
auto token = url_path_parser.read_till('/');
bool is_test_dc = false;
if (url_path_parser.try_skip("/test")) {
is_test_dc = true;
}
url_path_parser.skip('/');
if (url_path_parser.status().is_error()) {
return send_http_error(404, "Not Found");
}
auto method = url_path_parser.data();
auto query = td::make_unique<Query>(std::move(http_query->container_), token, is_test_dc, method,
std::move(http_query->args_), std::move(http_query->headers_),
std::move(http_query->files_), shared_data_, http_query->peer_address_, false);
auto promise = td::PromiseCreator::lambda([actor_id = actor_id(this)](td::Result<td::unique_ptr<Query>> r_query) {
send_closure(actor_id, &HttpConnection::on_query_finished, std::move(r_query));
});
auto promised_query = PromisedQueryPtr(query.release(), PromiseDeleter(std::move(promise)));
send_closure(client_manager_, &ClientManager::send, std::move(promised_query));
}
void HttpConnection::on_query_finished(td::Result<td::unique_ptr<Query>> r_query) {
LOG_CHECK(r_query.is_ok()) << r_query.error();
auto query = r_query.move_as_ok();
send_response(query->http_status_code(), std::move(query->answer()), query->retry_after());
}
void HttpConnection::send_response(int http_status_code, td::BufferSlice &&content, int retry_after) {
td::HttpHeaderCreator hc;
hc.init_status_line(http_status_code);
hc.set_keep_alive();
hc.set_content_type("application/json");
if (retry_after > 0) {
hc.add_header("Retry-After", PSLICE() << retry_after);
}
hc.set_content_size(content.size());
auto r_header = hc.finish();
LOG(DEBUG) << "Response headers: " << r_header.ok();
if (r_header.is_error()) {
LOG(ERROR) << "Bad response headers";
send_closure(std::move(connection_), &td::HttpInboundConnection::write_error, r_header.move_as_error());
return;
}
LOG(DEBUG) << "Send result: " << content;
send_closure(connection_, &td::HttpInboundConnection::write_next_noflush, td::BufferSlice(r_header.ok()));
send_closure(connection_, &td::HttpInboundConnection::write_next_noflush, std::move(content));
send_closure(std::move(connection_), &td::HttpInboundConnection::write_ok);
}
void HttpConnection::send_http_error(int http_status_code, td::Slice description) {
send_response(http_status_code, td::json_encode<td::BufferSlice>(JsonQueryError(http_status_code, description)), 0);
}
} // namespace telegram_bot_api