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 <QDebug>
  22
  23 #include <QFile>
  24 #include <QSharedPointer>
  25 #include <QString>
  26
  27 using namespace EventParsers;
  28
  29 iEventParser *MMSParser::IsValid(QFile &eventFile)
  30 {
  31         qDebug() << "Checking if a MMS file...";
  32
  33         // A buffer that can hold 3 fields with a single byte value...and a
  34         // bonus terminator byte if required (2*3 + 1)
  35         char fileIDBuf[0x07];
  36         qint64 bytesRead(eventFile.read(fileIDBuf, sizeof(fileIDBuf) - 1));
  37         eventFile.seek(0);
  38         if(bytesRead == sizeof(fileIDBuf) - 1)
  39         {
  40                 // This is the hex 8c (message type '0c' with high bit set), 80 (transaction id), 8D, 92, 85, 04
  41                 char fieldMessageType = 0x8C;
  42                 char fieldTransactionID = 0x98; // Optional
  43                 char fieldMessageMMSVersion = 0x8D;
  44                 char fieldMessageDate = 0x85;
  45                 uint offset = 0;
  46                 if(fileIDBuf[offset++] == fieldMessageType)
  47                 {
  48                         char valueMessageType = fileIDBuf[offset++] ^ 0x80;
  49                         qDebug() << "...looks like a MMS file. Message type is: " << valueMessageType;
  50
  51                         char valueTransactionID = -1;
  52                         if(fileIDBuf[offset] == fieldTransactionID)
  53                                 valueTransactionID = fileIDBuf[offset++] ^ 0x80;
  54
  55                         if(fileIDBuf[offset] == fieldMessageMMSVersion)
  56                         {
  57                                 char valueMessageMMSVersion = fileIDBuf[offset++] ^ 0x80;
  58                                 int majorVersion(valueMessageMMSVersion >> 4);
  59                                 int minorVersion(valueMessageMMSVersion & 0x0F);
  60                                 qDebug() << QString("...MMS version type is: %1.%2")
  61                                                         .arg(majorVersion)
  62                                                         .arg(minorVersion);
  63
  64                                 // We only support up to version 1.3
  65                                 if(majorVersion == 1 && minorVersion <= 3)
  66                                         return new MMSParser(eventFile.fileName());
  67                                 else
  68                                         qDebug() << QString("%1 is an unsupported MMS version")
  69                                                                 .arg(eventFile.fileName());
  70                         }
  71                         else
  72                                 qDebug() << QString("%1 is a malformed MMS. Expected %2, got %3")
  73                                                         .arg(eventFile.fileName())
  74                                                         .arg(fieldMessageMMSVersion).arg(fileIDBuf[offset]);
  75 //                              }
  76 //                              else
  77 //                              {
  78 //                                      QString hexs;
  79 //                                      for(int i(0); i<0x16; ++i)
  80 //                                              hexs.append(QString::number(fileIDBuf[i], 16).rightJustified(2, '0'));
  81 //                                      qDebug() << eventFile.fileName() << " has bad signature: " << hexs;
  82                 }
  83         }
  84         else
  85                 qDebug() << eventFile.fileName() << " has size mismatch.";
  86
  87         return false;
  88 }
  89
  90 MMSParser::MMSParser(const QString &filename)
  91 {
  92 }
  93
  94 EventTypes::EventFromFileList MMSParser::ParseFile(QFile &eventFile, const QList<uint> &recordsToReturn)
  95 {
  96         qDebug() << "MMS Parsing NYI!";
  97         return EventTypes::EventFromFileList();
  98 }