git.maemo.org Git - qwerkisync/blob - EventParsers/MMSParser.cpp

   1 /*
   2  * Copyright (C) 2011, Jamie Thompson
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 3 of the License, or (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public
  15  * License along with this program; If not, see
  16  * <http://www.gnu.org/licenses/>.
  17  */
  18
  19 #include "MMSParser.h"
  20
  21 #include "EventTypes/iEvent.h"
  22
  23 #include <QDebug>
  24
  25 #include <QFile>
  26 #include <QSharedPointer>
  27 #include <QString>
  28
  29 using namespace EventParsers;
  30
  31 iEventParser *MMSParser::IsValid(QFile &eventFile)
  32 {
  33         qDebug() << "Checking if a MMS file...";
  34
  35         // A buffer that can hold 3 fields with a single byte value...and a
  36         // bonus terminator byte if required (2*3 + 1)
  37         char fileIDBuf[0x07];
  38         qint64 bytesRead(eventFile.read(fileIDBuf, sizeof(fileIDBuf) - 1));
  39         eventFile.seek(0);
  40         if(bytesRead == sizeof(fileIDBuf) - 1)
  41         {
  42                 // This is the hex 8c (message type '0c' with high bit set), 80 (transaction id), 8D, 92, 85, 04
  43                 char fieldMessageType = 0x8C;
  44                 char fieldTransactionID = 0x98; // Optional
  45                 char fieldMessageMMSVersion = 0x8D;
  46                 char fieldMessageDate = 0x85;
  47                 uint offset = 0;
  48                 if(fileIDBuf[offset++] == fieldMessageType)
  49                 {
  50                         char valueMessageType = fileIDBuf[offset++] ^ 0x80;
  51                         qDebug() << "...looks like a MMS file. Message type is: " << valueMessageType;
  52
  53                         char valueTransactionID = -1;
  54                         if(fileIDBuf[offset] == fieldTransactionID)
  55                                 valueTransactionID = fileIDBuf[offset++] ^ 0x80;
  56
  57                         if(fileIDBuf[offset] == fieldMessageMMSVersion)
  58                         {
  59                                 char valueMessageMMSVersion = fileIDBuf[offset++] ^ 0x80;
  60                                 int majorVersion(valueMessageMMSVersion >> 4);
  61                                 int minorVersion(valueMessageMMSVersion & 0x0F);
  62                                 qDebug() << QString("...MMS version type is: %1.%2")
  63                                                         .arg(majorVersion)
  64                                                         .arg(minorVersion);
  65
  66                                 // We only support up to version 1.3
  67                                 if(majorVersion == 1 && minorVersion <= 3)
  68                                         return new MMSParser(eventFile.fileName());
  69                                 else
  70                                         qDebug() << QString("%1 is an unsupported MMS version")
  71                                                                 .arg(eventFile.fileName());
  72                         }
  73                         else
  74                                 qDebug() << QString("%1 is a malformed MMS. Expected %2, got %3")
  75                                                         .arg(eventFile.fileName())
  76                                                         .arg(fieldMessageMMSVersion).arg(fileIDBuf[offset]);
  77 //                              }
  78 //                              else
  79 //                              {
  80 //                                      QString hexs;
  81 //                                      for(int i(0); i<0x16; ++i)
  82 //                                              hexs.append(QString::number(fileIDBuf[i], 16).rightJustified(2, '0'));
  83 //                                      qDebug() << eventFile.fileName() << " has bad signature: " << hexs;
  84                 }
  85         }
  86         else
  87                 qDebug() << eventFile.fileName() << " has size mismatch.";
  88
  89         return false;
  90 }
  91
  92 MMSParser::MMSParser(const QString &filename)
  93 {
  94 }
  95
  96 EventTypes::EventFromFileList MMSParser::ParseFile(QFile &eventFile, const QList<uint> &recordsToReturn)
  97 {
  98         qDebug() << "MMS Parsing NYI!";
  99         return EventTypes::EventFromFileList();
 100 }