503 lines
11 KiB
C++
503 lines
11 KiB
C++
/*
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* Spdylay - SPDY Library
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*
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* Copyright (c) 2012 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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#include "shrpx_downstream.h"
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#include <cassert>
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#include "shrpx_upstream.h"
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#include "shrpx_client_handler.h"
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#include "shrpx_config.h"
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#include "shrpx_error.h"
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#include "shrpx_downstream_connection.h"
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#include "util.h"
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using namespace spdylay;
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namespace shrpx {
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Downstream::Downstream(Upstream *upstream, int stream_id, int priority)
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: upstream_(upstream),
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dconn_(0),
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stream_id_(stream_id),
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priority_(priority),
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downstream_stream_id_(-1),
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request_state_(INITIAL),
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request_major_(1),
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request_minor_(1),
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chunked_request_(false),
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request_connection_close_(false),
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request_expect_100_continue_(false),
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request_header_key_prev_(false),
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response_state_(INITIAL),
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response_http_status_(0),
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response_major_(1),
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response_minor_(1),
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chunked_response_(false),
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response_connection_close_(false),
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response_header_key_prev_(false),
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response_body_buf_(0),
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recv_window_size_(0)
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{}
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Downstream::~Downstream()
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{
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if(LOG_ENABLED(INFO)) {
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DLOG(INFO, this) << "Deleting";
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}
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if(response_body_buf_) {
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// Passing NULL to evbuffer_free() causes segmentation fault.
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evbuffer_free(response_body_buf_);
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}
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if(dconn_) {
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delete dconn_;
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}
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if(LOG_ENABLED(INFO)) {
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DLOG(INFO, this) << "Deleted";
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}
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}
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void Downstream::set_downstream_connection(DownstreamConnection *dconn)
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{
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dconn_ = dconn;
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}
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DownstreamConnection* Downstream::get_downstream_connection()
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{
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return dconn_;
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}
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void Downstream::pause_read(IOCtrlReason reason)
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{
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if(dconn_) {
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dconn_->pause_read(reason);
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}
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}
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int Downstream::resume_read(IOCtrlReason reason)
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{
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if(dconn_) {
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return dconn_->resume_read(reason);
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} else {
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return 0;
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}
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}
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void Downstream::force_resume_read()
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{
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if(dconn_) {
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dconn_->force_resume_read();
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}
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}
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namespace {
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void check_header_field(bool *result, const Headers::value_type &item,
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const char *name, const char *value)
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{
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if(util::strieq(item.first.c_str(), name)) {
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if(util::strifind(item.second.c_str(), value)) {
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*result = true;
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}
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}
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}
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} // namespace
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namespace {
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void check_transfer_encoding_chunked(bool *chunked,
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const Headers::value_type &item)
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{
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return check_header_field(chunked, item, "transfer-encoding", "chunked");
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}
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} // namespace
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namespace {
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void check_expect_100_continue(bool *res,
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const Headers::value_type& item)
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{
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return check_header_field(res, item, "expect", "100-continue");
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}
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} // namespace
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namespace {
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void check_connection_close(bool *connection_close,
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const Headers::value_type &item)
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{
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if(util::strieq(item.first.c_str(), "connection")) {
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if(util::strifind(item.second.c_str(), "close")) {
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*connection_close = true;
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} else if(util::strifind(item.second.c_str(), "keep-alive")) {
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*connection_close = false;
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}
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}
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}
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} // namespace
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const Headers& Downstream::get_request_headers() const
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{
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return request_headers_;
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}
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void Downstream::add_request_header(const std::string& name,
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const std::string& value)
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{
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request_header_key_prev_ = true;
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request_headers_.push_back(std::make_pair(name, value));
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}
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void Downstream::set_last_request_header_value(const std::string& value)
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{
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request_header_key_prev_ = false;
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Headers::value_type &item = request_headers_.back();
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item.second = value;
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check_transfer_encoding_chunked(&chunked_request_, item);
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check_expect_100_continue(&request_expect_100_continue_, item);
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//check_connection_close(&request_connection_close_, item);
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}
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bool Downstream::get_request_header_key_prev() const
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{
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return request_header_key_prev_;
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}
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void Downstream::append_last_request_header_key(const char *data, size_t len)
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{
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assert(request_header_key_prev_);
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Headers::value_type &item = request_headers_.back();
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item.first.append(data, len);
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}
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void Downstream::append_last_request_header_value(const char *data, size_t len)
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{
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assert(!request_header_key_prev_);
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Headers::value_type &item = request_headers_.back();
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item.second.append(data, len);
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}
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void Downstream::set_request_method(const std::string& method)
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{
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request_method_ = method;
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}
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const std::string& Downstream::get_request_method() const
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{
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return request_method_;
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}
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void Downstream::set_request_path(const std::string& path)
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{
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request_path_ = path;
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}
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void Downstream::append_request_path(const char *data, size_t len)
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{
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request_path_.append(data, len);
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}
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const std::string& Downstream::get_request_path() const
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{
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return request_path_;
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}
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void Downstream::set_request_major(int major)
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{
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request_major_ = major;
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}
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void Downstream::set_request_minor(int minor)
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{
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request_minor_ = minor;
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}
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int Downstream::get_request_major() const
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{
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return request_major_;
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}
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int Downstream::get_request_minor() const
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{
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return request_minor_;
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}
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Upstream* Downstream::get_upstream() const
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{
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return upstream_;
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}
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int32_t Downstream::get_stream_id() const
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{
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return stream_id_;
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}
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void Downstream::set_request_state(int state)
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{
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request_state_ = state;
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}
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int Downstream::get_request_state() const
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{
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return request_state_;
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}
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bool Downstream::get_chunked_request() const
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{
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return chunked_request_;
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}
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bool Downstream::get_request_connection_close() const
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{
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return request_connection_close_;
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}
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void Downstream::set_request_connection_close(bool f)
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{
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request_connection_close_ = f;
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}
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bool Downstream::get_expect_100_continue() const
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{
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return request_expect_100_continue_;
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}
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bool Downstream::get_output_buffer_full()
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{
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if(dconn_) {
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return dconn_->get_output_buffer_full();
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} else {
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return false;
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}
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}
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// Call this function after this object is attached to
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// Downstream. Otherwise, the program will crash.
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int Downstream::push_request_headers()
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{
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return dconn_->push_request_headers();
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}
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int Downstream::push_upload_data_chunk(const uint8_t *data, size_t datalen)
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{
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// Assumes that request headers have already been pushed to output
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// buffer using push_request_headers().
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if(!dconn_) {
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DLOG(WARNING, this) << "dconn_ is NULL";
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return 0;
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}
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return dconn_->push_upload_data_chunk(data, datalen);
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}
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int Downstream::end_upload_data()
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{
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return dconn_->end_upload_data();
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}
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const Headers& Downstream::get_response_headers() const
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{
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return response_headers_;
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}
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void Downstream::add_response_header(const std::string& name,
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const std::string& value)
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{
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response_header_key_prev_ = true;
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response_headers_.push_back(std::make_pair(name, value));
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check_transfer_encoding_chunked(&chunked_response_,
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response_headers_.back());
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}
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void Downstream::set_last_response_header_value(const std::string& value)
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{
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response_header_key_prev_ = false;
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Headers::value_type &item = response_headers_.back();
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item.second = value;
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check_transfer_encoding_chunked(&chunked_response_, item);
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//check_connection_close(&response_connection_close_, item);
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}
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bool Downstream::get_response_header_key_prev() const
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{
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return response_header_key_prev_;
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}
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void Downstream::append_last_response_header_key(const char *data, size_t len)
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{
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assert(response_header_key_prev_);
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Headers::value_type &item = response_headers_.back();
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item.first.append(data, len);
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}
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void Downstream::append_last_response_header_value(const char *data,
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size_t len)
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{
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assert(!response_header_key_prev_);
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Headers::value_type &item = response_headers_.back();
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item.second.append(data, len);
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}
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unsigned int Downstream::get_response_http_status() const
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{
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return response_http_status_;
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}
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void Downstream::set_response_http_status(unsigned int status)
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{
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response_http_status_ = status;
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}
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void Downstream::set_response_major(int major)
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{
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response_major_ = major;
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}
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void Downstream::set_response_minor(int minor)
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{
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response_minor_ = minor;
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}
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int Downstream::get_response_major() const
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{
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return response_major_;
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}
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int Downstream::get_response_minor() const
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{
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return response_minor_;
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}
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int Downstream::get_response_version() const
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{
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return response_major_*100+response_minor_;
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}
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bool Downstream::get_chunked_response() const
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{
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return chunked_response_;
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}
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void Downstream::set_chunked_response(bool f)
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{
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chunked_response_ = f;
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}
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bool Downstream::get_response_connection_close() const
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{
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return response_connection_close_;
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}
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void Downstream::set_response_connection_close(bool f)
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{
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response_connection_close_ = f;
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}
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int Downstream::on_read()
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{
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return dconn_->on_read();
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}
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void Downstream::set_response_state(int state)
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{
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response_state_ = state;
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}
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int Downstream::get_response_state() const
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{
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return response_state_;
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}
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namespace {
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void body_buf_cb(evbuffer *body, size_t oldlen, size_t newlen, void *arg)
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{
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Downstream *downstream = reinterpret_cast<Downstream*>(arg);
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if(newlen == 0) {
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if(downstream->resume_read(SHRPX_NO_BUFFER) == -1) {
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DLOG(WARNING, downstream) << "Sending WINDOW_UPDATE failed";
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}
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}
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}
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} // namespace
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int Downstream::init_response_body_buf()
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{
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if(!response_body_buf_) {
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response_body_buf_ = evbuffer_new();
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if(response_body_buf_ == 0) {
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DIE();
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}
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evbuffer_setcb(response_body_buf_, body_buf_cb, this);
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}
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return 0;
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}
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evbuffer* Downstream::get_response_body_buf()
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{
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return response_body_buf_;
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}
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void Downstream::set_priority(int pri)
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{
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priority_ = pri;
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}
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int32_t Downstream::get_recv_window_size() const
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{
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return recv_window_size_;
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}
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void Downstream::inc_recv_window_size(int32_t amount)
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{
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recv_window_size_ += amount;
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}
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void Downstream::set_recv_window_size(int32_t new_size)
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{
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recv_window_size_ = new_size;
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}
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bool Downstream::tunnel_established() const
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{
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return request_method_ == "CONNECT" &&
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200 <= response_http_status_ && response_http_status_ < 300;
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}
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void Downstream::set_downstream_stream_id(int32_t stream_id)
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{
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downstream_stream_id_ = stream_id;
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}
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int32_t Downstream::get_downstream_stream_id() const
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{
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return downstream_stream_id_;
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}
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uint32_t Downstream::get_response_rst_stream_status_code() const
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{
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return response_rst_stream_status_code_;
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}
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void Downstream::set_response_rst_stream_status_code(uint32_t status_code)
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{
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response_rst_stream_status_code_ = status_code;
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}
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} // namespace shrpx
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