private bool m_LoadMetEdonkeyOld(string metfile)
{
m_UnknownParameters=new ArrayList();
FileStream knownmet;
BinaryReader reader;
try
{
knownmet=File.OpenRead(metfile);
}
catch
{
if (metfile==m_CompleteNameMet)
{
CLog.Log (Constants.Log.Notify, "Load MET File Error. " + m_MetFile + ". File not found. Trying to recover from backup file.");
return m_LoadMet(m_CompleteNameMet + ".backup");
}
else
{
return false;
}
}
reader=new BinaryReader(knownmet);
try
{
if (((byte)reader.ReadByte()!=(byte)0xE0)||(reader.ReadByte()!=(byte)02))
{
reader.Close();
knownmet.Close();
if (metfile==m_CompleteNameMet)
{
CLog.Log (Constants.Log.Notify, "Load MET File Error. " + m_MetFile + ". Header not match. Trying to recover from backup file.");
return m_LoadMet(m_CompleteNameMet + ".backup");
}
else
{
return false;
}
}
// test for new edonkey format
byte[] test = new byte[4];
reader.BaseStream.Seek(24, SeekOrigin.Begin);
test = reader.ReadBytes(4);
reader.BaseStream.Seek(2, SeekOrigin.Begin);
if ((test[0] == 0) &&
(test[1] == 0) &&
(test[2] == 2) &&
(test[3] == 1))
{
// new edonkey format
m_FileDate=new DateTime(((long)reader.ReadUInt32()*10000000L)+621355968000000000L);
FileHash=reader.ReadBytes(16);
m_LoadMetParameters(reader);
if (reader.BaseStream.Position < reader.BaseStream.Length)
{
byte temp = reader.ReadByte();
m_NumChunks=(ushort)CHash.GetChunksCount(m_FileSize);
m_HashSet = new ArrayList(m_NumChunks);
for (uint i = 0; i < m_NumChunks && (reader.BaseStream.Position + 16 < reader.BaseStream.Length); i++)
{
byte[] cur_hash = new byte[16];
cur_hash = reader.ReadBytes(16);
m_HashSet.Add(cur_hash);
}
//Console.WriteLine(reader.BaseStream.Position.ToString());
//Console.WriteLine(reader.BaseStream.Length.ToString());
byte[] hash = CHash.DoHashSetHash(m_HashSet);
//Console.WriteLine(CKernel.HashToString(hash));
}
}
else
{
// old edonkey format
m_FileDate=new DateTime(((long)reader.ReadUInt32()*10000000L)+621355968000000000L);
FileHash=reader.ReadBytes(16);
m_FileFormat=Protocol.PartMet.eDonkeyOld;
m_LoadMetParameters(reader);
m_NumChunks=(ushort)CHash.GetChunksCount(m_FileSize);
m_HashSet=new ArrayList(m_NumChunks);
m_CrumbsHashSet=new ArrayList((ushort)CHash.GetCrumbsCount(m_FileSize));
if (reader.PeekChar()>=0)
{
if ((m_NumChunks>1)&&(reader.ReadByte()==(byte)1))
{
for (uint parte=0;parte!=m_NumChunks;parte++)
{
m_HashSet.Add(reader.ReadBytes(16));
}
}
if ((reader.PeekChar()>=0)&&
(reader.ReadByte()==(byte)1))
{
for (uint crumb=0;crumb!=CHash.GetCrumbsCount(m_FileSize);crumb++)
{
m_CrumbsHashSet.Add(reader.ReadBytes(8));
}
}
}
}
}
catch
{
reader.Close();
knownmet.Close();
if (metfile==m_CompleteNameMet)
{
CLog.Log (Constants.Log.Notify, "Load MET File Error. " + m_MetFile + ". Error in data. Trying to recover from backup file.");
return m_LoadMetEdonkeyOld(m_CompleteNameMet + ".backup");
}
else
{
return false;
}
}
reader.Close();
knownmet.Close();
return true;
}
private bool m_LoadMet(string metfile)
{
m_UnknownParameters=new ArrayList();
FileStream knownmet;
BinaryReader reader;
try
{
knownmet=File.OpenRead(metfile);
}
catch
{
if (metfile==m_CompleteNameMet)
{
CLog.Log (Constants.Log.Notify, "Load MET File Error. " + m_MetFile + ". File not found. Trying to recover from backup file.");
return m_LoadMet(m_CompleteNameMet + ".backup");
}
else
{
return false;
}
}
reader=new BinaryReader(knownmet);
try
{
if ((byte)reader.ReadByte()!=(byte)0xE0)
{
reader.Close();
knownmet.Close();
if (metfile==m_CompleteNameMet)
{
CLog.Log (Constants.Log.Notify, "Load MET File Error. " + m_MetFile + ". Header not match. Trying to recover from backup file.");
return m_LoadMet(m_CompleteNameMet + ".backup");
}
else
{
return false;
}
}
m_FileDate=new DateTime(((long)reader.ReadUInt32()*10000000L)+621355968000000000L);
FileHash=reader.ReadBytes(16);
m_NumChunks=reader.ReadUInt16();
m_HashSet=new ArrayList(m_NumChunks);
for (uint parte=0;parte!=m_NumChunks;parte++)
{
m_HashSet.Add(reader.ReadBytes(16));
}
//Gaps=new SortedList();
m_LoadMetParameters(reader);
}
catch
{
reader.Close();
knownmet.Close();
if (metfile==m_CompleteNameMet)
{
// try lo load with the .met edonkey format
if (this.m_LoadMetEdonkeyOld(m_CompleteNameMet))
{
return true;
}
else
{
// try to recover a backup
CLog.Log (Constants.Log.Notify, "Load MET File Error. " + m_MetFile + ". Error in data. Trying to recover from backup file.");
return m_LoadMet(m_CompleteNameMet + ".backup");
}
}
else
{
return false;
}
}
m_FileFormat=Protocol.PartMet.eMule;
reader.Close();
knownmet.Close();
return true;
}
