src/base/http/requestparser.h

   1 /*
   2  * Bittorrent Client using Qt and libtorrent.
   3  * Copyright (C) 2018  Mike Tzou (Chocobo1)
   4  * Copyright (C) 2014  Vladimir Golovnev <glassez@yandex.ru>
   5  * Copyright (C) 2006  Ishan Arora and Christophe Dumez <chris@qbittorrent.org>
   6  *
   7  * This program is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU General Public License
   9  * as published by the Free Software Foundation; either version 2
  10  * of the License, or (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  20  *
  21  * In addition, as a special exception, the copyright holders give permission to
  22  * link this program with the OpenSSL project's "OpenSSL" library (or with
  23  * modified versions of it that use the same license as the "OpenSSL" library),
  24  * and distribute the linked executables. You must obey the GNU General Public
  25  * License in all respects for all of the code used other than "OpenSSL".  If you
  26  * modify file(s), you may extend this exception to your version of the file(s),
  27  * but you are not obligated to do so. If you do not wish to do so, delete this
  28  * exception statement from your version.
  29  */
  30
  31 #pragma once
  32
  33 #include "types.h"
  34
  35 namespace Http
  36 {
  37     class RequestParser
  38     {
  39     public:
  40         enum class ParseStatus
  41         {
  42             OK,
  43             Incomplete,
  44             BadMethod,
  45             BadRequest
  46         };
  47
  48         struct ParseResult
  49         {
  50             // when `status != ParseStatus::OK`, `request` & `frameSize` are undefined
  51             ParseStatus status = ParseStatus::BadRequest;
  52             Request request;
  53             long frameSize = 0;  // http request frame size (bytes)
  54         };
  55
  56         static ParseResult parse(const QByteArray &data);
  57
  58         static const long MAX_CONTENT_SIZE = 64 * 1024 * 1024;  // 64 MB
  59
  60     private:
  61         RequestParser() = default;
  62
  63         ParseResult doParse(QByteArrayView data);
  64         bool parseStartLines(QStringView data);
  65         bool parseRequestLine(const QString &line);
  66
  67         bool parsePostMessage(QByteArrayView data);
  68         bool parseFormData(QByteArrayView data);
  69
  70         Request m_request;
  71     };
  72 }