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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/transport/http/request.h>
#include <hicn/transport/utils/uri.h>
namespace transport {
namespace http {
HTTPRequest::HTTPRequest() {}
HTTPRequest::HTTPRequest(HTTPMethod method, const std::string &url,
const HTTPHeaders &headers, HTTPPayload &&payload) {
init(method, url, headers, std::move(payload));
}
void HTTPRequest::init(HTTPMethod method, const std::string &url,
const HTTPHeaders &headers, HTTPPayload &&payload) {
utils::Uri uri;
uri.parse(url);
path_ = uri.getPath();
query_string_ = uri.getQueryString();
protocol_ = uri.getProtocol();
locator_ = uri.getLocator();
port_ = uri.getPort();
http_version_ = HTTP_VERSION;
headers_ = headers;
payload_ = std::move(payload);
std::transform(locator_.begin(), locator_.end(), locator_.begin(), ::tolower);
std::transform(protocol_.begin(), protocol_.end(), protocol_.begin(),
::tolower);
std::stringstream stream;
stream << method_map[method] << " " << uri.getPath() << " HTTP/"
<< HTTP_VERSION << "\r\n";
for (auto &item : headers) {
stream << item.first << ": " << item.second << "\r\n";
}
stream << "\r\n";
request_string_ = stream.str();
}
std::string HTTPRequest::getPort() const { return port_; }
std::string HTTPRequest::getLocator() const { return locator_; }
std::string HTTPRequest::getProtocol() const { return protocol_; }
std::string HTTPRequest::getPath() const { return path_; }
std::string HTTPRequest::getQueryString() const { return query_string_; }
std::string HTTPRequest::getRequestString() const { return request_string_; }
std::size_t HTTPRequest::parseHeaders(const uint8_t *buffer, std::size_t size,
HTTPHeaders &headers,
std::string &http_version,
std::string &method, std::string &url) {
const char *crlf2 = "\r\n\r\n";
const char *begin = (const char *)buffer;
const char *end = begin + size;
const char *begincrlf2 = (const char *)crlf2;
const char *endcrlf2 = begincrlf2 + strlen(crlf2);
auto it = std::search(begin, end, begincrlf2, endcrlf2);
if (it != end) {
std::stringstream ss;
ss.str(std::string(begin, it + 2));
std::string line;
getline(ss, line);
std::istringstream line_s(line);
std::string _http_version;
line_s >> method;
line_s >> url;
line_s >> _http_version;
std::size_t separator;
if ((separator = _http_version.find('/')) != std::string::npos) {
if (_http_version.substr(0, separator) != "HTTP") {
return 0;
}
http_version = _http_version.substr(
separator + 1, _http_version.length() - separator - 1);
} else {
return 0;
}
std::size_t param_end;
std::size_t value_start;
std::string header_key, header_value;
while (getline(ss, line)) {
if ((param_end = line.find(':')) != std::string::npos) {
value_start = param_end + 1;
if ((value_start) < line.size()) {
if (line[value_start] == ' ') {
value_start++;
}
if (value_start < line.size()) {
header_key = line.substr(0, param_end);
header_value =
line.substr(value_start, line.size() - value_start - 1);
std::transform(header_key.begin(), header_key.end(),
header_key.begin(),
[](unsigned char c) { return std::tolower(c); });
std::transform(header_value.begin(), header_value.end(),
header_value.begin(),
[](unsigned char c) { return std::tolower(c); });
headers[header_key] = header_value;
}
}
} else {
return 0;
}
}
}
return it + strlen(crlf2) - begin;
}
} // namespace http
} // namespace transport
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