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/*
* Copyright (c) 2021 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <hicn/http-proxy/http_session.h>
#include <hicn/transport/http/request.h>
#include <hicn/transport/http/response.h>
#include <experimental/algorithm>
#include <experimental/functional>
#include <iostream>
constexpr char HTTPMessageFastParser::http_ok[];
constexpr char HTTPMessageFastParser::http_cors[];
constexpr char HTTPMessageFastParser::http_failed[];
std::string HTTPMessageFastParser::numbers = "0123456789";
std::string HTTPMessageFastParser::content_length = "content-length";
std::string HTTPMessageFastParser::transfer_encoding = "transfer-encoding";
std::string HTTPMessageFastParser::chunked = "chunked";
std::string HTTPMessageFastParser::cache_control = "cache-control";
std::string HTTPMessageFastParser::mpd = "mpd";
std::string HTTPMessageFastParser::connection = "connection";
std::string HTTPMessageFastParser::separator = "\r\n\r\n";
void HTTPMessageFastParser::getHeaders(const uint8_t *headers,
std::size_t length, bool request,
transport::Metadata *metadata) {
if (request) {
transport::RequestMetadata *_metadata =
(transport::RequestMetadata *)(metadata);
if (transport::http::HTTPRequest::parseHeaders(
headers, length, _metadata->headers, _metadata->http_version,
_metadata->method, _metadata->path)) {
return;
}
} else {
transport::ResponseMetadata *_metadata =
(transport::ResponseMetadata *)(metadata);
if (transport::http::HTTPResponse::parseHeaders(
headers, length, _metadata->headers, _metadata->http_version,
_metadata->status_code, _metadata->status_string)) {
return;
}
}
throw std::runtime_error("Error parsing response headers.");
}
std::size_t HTTPMessageFastParser::hasBody(const uint8_t *headers,
std::size_t length) {
const char *buffer = reinterpret_cast<const char *>(headers);
const char *begin = buffer;
const char *end = buffer + length;
using std::experimental::make_boyer_moore_searcher;
auto it = std::experimental::search(
begin, end,
make_boyer_moore_searcher(content_length.begin(), content_length.end()));
if (it != end) {
// Read header line
auto it2 = std::find_first_of(it, end, numbers.begin(), numbers.end());
auto it3 = std::find(it2, end, '\n');
return std::stoul(std::string(it2, it3));
}
return 0;
}
bool HTTPMessageFastParser::isMpdRequest(const uint8_t *headers,
std::size_t length) {
const char *buffer = reinterpret_cast<const char *>(headers);
const char *begin = buffer;
const char *end = buffer + length;
using std::experimental::make_boyer_moore_searcher;
auto it = std::experimental::search(
begin, end, make_boyer_moore_searcher(mpd.begin(), mpd.end()));
if (it != end) {
return true;
}
return false;
}
uint32_t HTTPMessageFastParser::parseCacheControl(
[[maybe_unused]] const uint8_t *headers,
[[maybe_unused]] std::size_t length) {
return 0;
}
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