152 lines
5.3 KiB
C++
152 lines
5.3 KiB
C++
/*
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* nghttp2 - HTTP/2 C Library
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*
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* Copyright (c) 2014 Tatsuhiro Tsujikawa
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#ifndef ASIO_HTTP2_H
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#define ASIO_HTTP2_H
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#include <cstdint>
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#include <memory>
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#include <string>
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#include <vector>
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#include <functional>
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#include <map>
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#include <boost/system/error_code.hpp>
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#include <boost/asio.hpp>
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#include <boost/asio/ssl.hpp>
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#include <nghttp2/nghttp2.h>
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namespace nghttp2 {
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namespace asio_http2 {
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struct header_value {
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// header field value
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std::string value;
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// true if the header field value is sensitive information, such as
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// authorization information or short length secret cookies. If
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// true, those header fields are not indexed by HPACK (but still
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// huffman-encoded), which results in lesser compression.
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bool sensitive;
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};
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// header fields. The header field name must be lower-cased.
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using header_map = std::multimap<std::string, header_value>;
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const boost::system::error_category &nghttp2_category() noexcept;
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struct uri_ref {
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std::string scheme;
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std::string host;
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// form after percent-encoding decoded
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std::string path;
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// original path, percent-encoded
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std::string raw_path;
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// original query, percent-encoded
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std::string raw_query;
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std::string fragment;
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};
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// Callback function when data is arrived. EOF is indicated by
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// passing 0 to the second parameter.
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typedef std::function<void(const uint8_t *, std::size_t)> data_cb;
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typedef std::function<void(void)> void_cb;
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typedef std::function<void(const boost::system::error_code &ec)> error_cb;
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// Callback function when request and response are finished. The
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// parameter indicates the cause of closure.
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typedef std::function<void(uint32_t)> close_cb;
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// Callback function to generate response body. This function has the
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// same semantics with nghttp2_data_source_read_callback. Just source
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// and user_data parameters are removed.
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//
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// Basically, write at most |len| bytes to |data| and returns the
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// number of bytes written. If there is no data left to send, set
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// NGHTTP2_DATA_FLAG_EOF to *data_flags (e.g., *data_flags |=
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// NGHTTP2_DATA_FLAG_EOF). If there is still data to send but they
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// are not available right now, return NGHTTP2_ERR_DEFERRED. In case
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// of the error and request/response must be closed, return
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// NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE.
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typedef std::function<ssize_t(uint8_t *buf, std::size_t len,
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uint32_t *data_flags)>
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generator_cb;
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// Convenient function to create function to read file denoted by
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// |path|. This can be passed to response::end().
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generator_cb file_generator(const std::string &path);
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// Like file_generator(const std::string&), but it takes opened file
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// descriptor. The passed descriptor will be closed when returned
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// function object is destroyed.
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generator_cb file_generator_from_fd(int fd);
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// Validates path so that it does not contain directory traversal
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// vector. Returns true if path is safe. The |path| must start with
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// "/" otherwise returns false. This function should be called after
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// percent-decode was performed.
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bool check_path(const std::string &path);
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// Performs percent-decode against string |s|.
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std::string percent_decode(const std::string &s);
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// Returns HTTP date representation of current posix time |t|.
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std::string http_date(int64_t t);
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// Parses |uri| and extract scheme, host and service. The service is
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// port component of URI (e.g., "8443") if available, otherwise it is
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// scheme (e.g., "https").
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boost::system::error_code host_service_from_uri(boost::system::error_code &ec,
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std::string &scheme,
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std::string &host,
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std::string &service,
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const std::string &uri);
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enum nghttp2_asio_error {
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NGHTTP2_ASIO_ERR_NO_ERROR = 0,
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NGHTTP2_ASIO_ERR_TLS_NO_APP_PROTO_NEGOTIATED = 1,
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};
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} // namespace asio_http2
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} // namespace nghttp2
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namespace boost {
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namespace system {
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template <> struct is_error_code_enum<nghttp2_error> {
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BOOST_STATIC_CONSTANT(bool, value = true);
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};
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template <> struct is_error_code_enum<nghttp2::asio_http2::nghttp2_asio_error> {
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BOOST_STATIC_CONSTANT(bool, value = true);
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};
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} // namespace system
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} // namespace boost
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#endif // ASIO_HTTP2_H
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