request_parser.h

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// Copyright (C) 2016-2018,2021 Internet Systems Consortium, Inc. ("ISC")
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
#ifndef HTTP_REQUEST_PARSER_H
#define HTTP_REQUEST_PARSER_H
 
#include <http/http_message_parser_base.h>
#include <http/request.h>
#include <boost/shared_ptr.hpp>
 
namespace isc {
namespace http {
 
class HttpRequestParser;
 
typedef boost::shared_ptr<HttpRequestParser> HttpRequestParserPtr;
 
class HttpRequestParser : public HttpMessageParserBase {
public:
 
 
 
    static const int RECEIVE_START_ST = SM_DERIVED_STATE_MIN + 1;
 
    static const int HTTP_METHOD_ST = SM_DERIVED_STATE_MIN + 2;
 
    static const int HTTP_URI_ST = SM_DERIVED_STATE_MIN + 3;
 
    static const int HTTP_VERSION_H_ST = SM_DERIVED_STATE_MIN + 4;
 
    static const int HTTP_VERSION_T1_ST = SM_DERIVED_STATE_MIN + 5;
 
    static const int HTTP_VERSION_T2_ST = SM_DERIVED_STATE_MIN + 6;
 
    static const int HTTP_VERSION_P_ST = SM_DERIVED_STATE_MIN + 7;
 
    static const int HTTP_VERSION_SLASH_ST = SM_DERIVED_STATE_MIN + 8;
 
    static const int HTTP_VERSION_MAJOR_START_ST = SM_DERIVED_STATE_MIN + 9;
 
    static const int HTTP_VERSION_MAJOR_ST = SM_DERIVED_STATE_MIN + 10;
 
    static const int HTTP_VERSION_MINOR_START_ST = SM_DERIVED_STATE_MIN + 11;
 
    static const int HTTP_VERSION_MINOR_ST = SM_DERIVED_STATE_MIN + 12;
 
    static const int EXPECTING_NEW_LINE1_ST = SM_DERIVED_STATE_MIN + 13;
 
    static const int HEADER_LINE_START_ST = SM_DERIVED_STATE_MIN + 14;
 
    static const int HEADER_LWS_ST = SM_DERIVED_STATE_MIN + 15;
 
    static const int HEADER_NAME_ST = SM_DERIVED_STATE_MIN + 16;
 
    static const int SPACE_BEFORE_HEADER_VALUE_ST = SM_DERIVED_STATE_MIN + 17;
 
    static const int HEADER_VALUE_ST = SM_DERIVED_STATE_MIN + 18;
 
    static const int EXPECTING_NEW_LINE2_ST = SM_DERIVED_STATE_MIN + 19;
 
    static const int EXPECTING_NEW_LINE3_ST = SM_DERIVED_STATE_MIN + 20;
 
    static const int HTTP_BODY_ST = SM_DERIVED_STATE_MIN + 21;
 
 
 
    explicit HttpRequestParser(HttpRequest& request);
 
    void initModel();
 
private:
 
    virtual void defineStates();
 
 
 
    void receiveStartHandler();
 
    void httpMethodHandler();
 
    void uriHandler();
 
    void versionHTTPHandler(const char expected_letter,
                            const unsigned int next_state);
 
    void versionNumberStartHandler(const unsigned int next_state,
                                   unsigned int* storage);
 
    void versionNumberHandler(const char following_character,
                              const unsigned int next_state,
                              unsigned int* const storage);
 
    void expectingNewLineHandler(const unsigned int next_state);
 
    void headerLineStartHandler();
 
    void headerLwsHandler();
 
    void headerNameHandler();
 
    void spaceBeforeHeaderValueHandler();
 
    void headerValueHandler();
 
    void bodyHandler();
 
 
    HttpRequest& request_;
 
    HttpRequestContextPtr context_;
};
 
} // namespace http
} // namespace isc
 
#endif // HTTP_REQUEST_PARSER_H