mirror of
https://github.com/ton-blockchain/ton
synced 2025-02-12 11:12:16 +00:00
334 lines
9.3 KiB
C++
334 lines
9.3 KiB
C++
/*
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This file is part of TON Blockchain Library.
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TON Blockchain Library is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation, either version 2 of the License, or
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(at your option) any later version.
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TON Blockchain Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with TON Blockchain Library. If not, see <http://www.gnu.org/licenses/>.
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Copyright 2019-2020 Telegram Systems LLP
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*/
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#pragma once
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#include "td/utils/buffer.h"
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#include "auto/tl/ton_api.h"
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#include "td/actor/PromiseFuture.h"
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#include <map>
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#include <list>
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#include <mutex>
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namespace ton {
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namespace http {
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enum HttpStatusCode : td::uint32 {
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status_ok = 200,
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status_bad_request = 400,
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status_method_not_allowed = 405,
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status_internal_server_error = 500,
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status_bad_gateway = 502,
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status_gateway_timeout = 504
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};
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struct HttpHeader {
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std::string name;
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std::string value;
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void store_http(td::ChainBufferWriter &output);
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tl_object_ptr<ton_api::http_header> store_tl();
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size_t size() const {
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return 2 + name.size() + value.size();
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}
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bool empty() const {
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return name.size() == 0;
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}
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td::Status basic_check();
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};
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namespace util {
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td::Result<std::string> get_line(td::ChainBufferReader &input, std::string &cur_line, bool &read, size_t max_line_size);
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td::Result<HttpHeader> get_header(std::string line);
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} // namespace util
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class HttpPayload {
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public:
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enum class PayloadType { pt_empty, pt_eof, pt_chunked, pt_content_length, pt_tunnel };
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HttpPayload(PayloadType t, size_t low_watermark, size_t high_watermark, td::uint64 size)
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: type_(t), low_watermark_(low_watermark), high_watermark_(high_watermark), cur_chunk_size_(size) {
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CHECK(t == PayloadType::pt_content_length);
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state_ = ParseState::reading_chunk_data;
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}
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HttpPayload(PayloadType t, size_t low_watermark, size_t high_watermark)
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: type_(t), low_watermark_(low_watermark), high_watermark_(high_watermark) {
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CHECK(t != PayloadType::pt_content_length);
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CHECK(t != PayloadType::pt_empty);
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switch (t) {
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case PayloadType::pt_eof:
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case PayloadType::pt_tunnel:
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state_ = ParseState::reading_chunk_data;
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break;
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case PayloadType::pt_chunked:
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state_ = ParseState::reading_chunk_header;
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break;
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default:
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UNREACHABLE();
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}
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}
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HttpPayload(PayloadType t) : type_(t) {
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CHECK(t == PayloadType::pt_empty);
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state_ = ParseState::completed;
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written_zero_chunk_ = true;
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written_trailer_ = true;
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}
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class Callback {
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public:
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virtual void run(size_t ready_bytes) = 0;
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virtual void completed() = 0;
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virtual ~Callback() = default;
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};
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void add_callback(std::unique_ptr<Callback> callback);
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void run_callbacks();
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td::Status parse(td::ChainBufferReader &input);
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bool parse_completed() const;
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void complete_parse() {
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state_ = ParseState::completed;
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run_callbacks();
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}
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size_t ready_bytes() const {
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return ready_bytes_;
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}
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bool low_watermark_reached() const {
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return ready_bytes_ <= low_watermark_;
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}
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bool high_watermark_reached() const {
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return ready_bytes_ > high_watermark_;
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}
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bool is_error() const {
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return error_;
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}
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void set_error() {
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error_ = true;
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}
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PayloadType payload_type() const {
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return type_;
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}
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td::MutableSlice get_read_slice();
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void confirm_read(size_t s);
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void add_trailer(HttpHeader header);
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void add_chunk(td::BufferSlice data);
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td::BufferSlice get_slice(size_t max_size);
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void slice_gc();
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HttpHeader get_header();
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bool store_http(td::ChainBufferWriter &output, size_t max_size, HttpPayload::PayloadType store_type);
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tl_object_ptr<ton_api::http_payloadPart> store_tl(size_t max_size);
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bool written() const {
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return ready_bytes_ == 0 && parse_completed() && written_zero_chunk_ && written_trailer_;
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}
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private:
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enum class ParseState { reading_chunk_header, reading_chunk_data, reading_trailer, reading_crlf, completed };
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PayloadType type_{PayloadType::pt_chunked};
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size_t low_watermark_;
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size_t high_watermark_;
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std::string tmp_;
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std::list<td::BufferSlice> chunks_;
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std::list<HttpHeader> trailer_;
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size_t trailer_size_ = 0;
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size_t ready_bytes_ = 0;
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td::uint64 cur_chunk_size_ = 0;
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size_t last_chunk_free_ = 0;
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size_t chunk_size_ = 1 << 14;
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bool written_zero_chunk_ = false;
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bool written_trailer_ = false;
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bool error_ = false;
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std::list<std::unique_ptr<Callback>> callbacks_;
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std::atomic<ParseState> state_{ParseState::reading_chunk_header};
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std::mutex mutex_;
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};
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class HttpRequest {
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public:
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static constexpr size_t max_header_size() {
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return 16 << 10;
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}
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static constexpr size_t max_one_header_size() {
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return 16 << 10;
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}
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static constexpr size_t max_payload_size() {
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return 1 << 20;
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}
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static constexpr size_t low_watermark() {
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return 1 << 14;
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}
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static constexpr size_t high_watermark() {
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return 1 << 17;
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}
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static td::Result<std::unique_ptr<HttpRequest>> create(std::string method, std::string url,
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std::string proto_version);
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HttpRequest(std::string method, std::string url, std::string proto_version);
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bool check_parse_header_completed() const;
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bool keep_alive() const {
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return keep_alive_;
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}
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td::Status complete_parse_header();
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td::Status add_header(HttpHeader header);
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td::Result<std::shared_ptr<HttpPayload>> create_empty_payload();
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bool need_payload() const;
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const auto &method() const {
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return method_;
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}
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const auto &url() const {
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return url_;
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}
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const auto &proto_version() const {
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return proto_version_;
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}
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const auto &host() const {
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return host_;
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}
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bool no_payload_in_answer() const {
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return method_ == "HEAD";
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}
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void set_keep_alive(bool value) {
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keep_alive_ = value;
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}
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void store_http(td::ChainBufferWriter &output);
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tl_object_ptr<ton_api::http_request> store_tl(td::Bits256 req_id);
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static td::Result<std::unique_ptr<HttpRequest>> parse(std::unique_ptr<HttpRequest> request, std::string &cur_line,
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bool &exit_loop, td::ChainBufferReader &input);
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private:
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std::string method_;
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std::string url_;
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std::string proto_version_;
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std::string host_;
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size_t content_length_ = 0;
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bool found_content_length_ = false;
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bool found_transfer_encoding_ = false;
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bool parse_header_completed_ = false;
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bool keep_alive_ = false;
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std::vector<HttpHeader> options_;
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};
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class HttpResponse {
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public:
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static constexpr size_t max_header_size() {
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return 16 << 10;
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}
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static constexpr size_t max_one_header_size() {
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return 16 << 10;
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}
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static constexpr size_t max_payload_size() {
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return 1 << 20;
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}
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static constexpr size_t low_watermark() {
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return 1 << 14;
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}
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static constexpr size_t high_watermark() {
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return 1 << 17;
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}
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static td::Result<std::unique_ptr<HttpResponse>> create(std::string proto_version, td::uint32 code,
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std::string reason, bool force_no_payload, bool keep_alive,
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bool is_tunnel = false);
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HttpResponse(std::string proto_version, td::uint32 code, std::string reason, bool force_no_payload, bool keep_alive,
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bool is_tunnel = false);
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bool check_parse_header_completed() const;
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bool keep_alive() const {
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return !force_no_payload_ && keep_alive_;
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}
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td::Status complete_parse_header();
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td::Status add_header(HttpHeader header);
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td::Result<std::shared_ptr<HttpPayload>> create_empty_payload();
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bool need_payload() const;
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auto code() const {
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return code_;
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}
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const auto &proto_version() const {
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return proto_version_;
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}
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void set_keep_alive(bool value) {
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keep_alive_ = value;
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}
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void store_http(td::ChainBufferWriter &output);
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tl_object_ptr<ton_api::http_response> store_tl();
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static td::Result<std::unique_ptr<HttpResponse>> parse(std::unique_ptr<HttpResponse> request, std::string &cur_line,
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bool force_no_payload, bool keep_alive, bool &exit_loop,
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td::ChainBufferReader &input);
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static std::unique_ptr<HttpResponse> create_error(HttpStatusCode code, std::string reason);
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bool found_transfer_encoding() const {
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return found_transfer_encoding_;
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}
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bool found_content_length() const {
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return found_content_length_;
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}
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private:
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std::string proto_version_;
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td::uint32 code_;
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std::string reason_;
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bool force_no_payload_ = false;
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bool force_no_keep_alive_ = false;
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size_t content_length_ = 0;
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bool found_content_length_ = false;
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bool found_transfer_encoding_ = false;
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bool parse_header_completed_ = false;
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bool keep_alive_ = false;
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std::vector<HttpHeader> options_;
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bool is_tunnel_ = false;
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};
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void answer_error(HttpStatusCode code, std::string reason,
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td::Promise<std::pair<std::unique_ptr<HttpResponse>, std::shared_ptr<HttpPayload>>> promise);
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} // namespace http
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} // namespace ton
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