protected byte[] VariablesToBytes(List <DatabaseVariable> ltVariables, int iLength)
{
byte[] abBuffer, abReturn = new byte[Crc24.ciCrc24Length + iLength];
int iFrom, iTo = Crc24.ciCrc24Length;
Crc24 Crc24Computed;
foreach (DatabaseVariable Variable in ltVariables)
{
abReturn[iTo++] = Variable.bTag;
abBuffer = Variable.GetValue();
for (iFrom = 0; iFrom < Variable.iLength; iFrom++)
{
abReturn[iTo++] = abBuffer[iFrom];
}
}
if (iTo == Crc24.ciCrc24Length + iLength)
{
Crc24Computed = new Crc24(abReturn, Crc24.ciCrc24Length);
abReturn[0] = (byte)((Crc24Computed.iCrc24 >> 16) & 0xff);
abReturn[1] = (byte)((Crc24Computed.iCrc24 >> 8) & 0xff);
abReturn[2] = (byte)(Crc24Computed.iCrc24 & 0xff);
return(abReturn);
}
else
{
throw new FormatException("Failed to complete EncryptedDatabase.VariablesToBytes().");
}
}
public new List <DatabaseObject> Read(string sTable)
{
int iBytesRead, iCrc24Value, iOffset = Crc24.ciCrc24Length;
byte[] abDecrypted;
Crc24 Crc24Computed;
DatabaseObject NewObject;
DatabaseVariable NewVariable;
List <Row> ltRows;
List <DatabaseObject> ltReturn = new List <DatabaseObject>();
_eState = nState.OK;
if (sTable == "system")
{
ltRows = base.Read(sTable, ciIdSystemMinPropertyId, int.MaxValue);
}
else
{
ltRows = base.Read(sTable);
}
foreach (Row NewRow in ltRows)
{
if (_eState != nState.OK)
{
break;
}
NewObject = null;
NewVariable = FetchEmptyDatabaseVariable();
abDecrypted = _Cryptography.DecryptAes(NewRow.abData, _abAesKey);
if ((abDecrypted == null) || (abDecrypted.Length < (Crc24.ciCrc24Length + 2)))
{
_eState = nState.CouldNotRead;
}
else
{
iCrc24Value = (abDecrypted[0] << 16) | (abDecrypted[1] << 8) | abDecrypted[2];
Crc24Computed = new Crc24(abDecrypted, Crc24.ciCrc24Length);
if (iCrc24Value != Crc24Computed.iCrc24)
{
_eState = nState.CouldNotRead;
}
else
{
while ((iBytesRead = NewVariable.SetValue(abDecrypted, iOffset)) > 0)
{
_ltVariables.Add(NewVariable);
NewVariable = FetchEmptyDatabaseVariable();
iOffset += iBytesRead;
}
switch (sTable)
{
case "system": NewObject = new Property(NewRow.iId, _ltVariables); break;
}
if (NewObject != null)
{
ltReturn.Add(NewObject);
}
_ltVariables.Add(NewVariable);
}
}
RecycleDatabaseVariables();
}
return(ltReturn);
}
/// <summary></summary>
/// <param name=""></param>
/// <param name=""></param>
public byte[] Parse(string sArmor, bool isKey)
{
byte[] abCrc24, abReturn = null;
int i, iCrc24Value;
Crc24 Crc24Computed;
BytesAndTextUtility StringConverter;
nArmorParserState eArmorParserState = nArmorParserState.Start;
string sArmoredData, sChecksum, sHeader;
string[] asLines;
if (string.IsNullOrEmpty(sArmor))
{
_eStatus = nStatus.ParseError;
}
else
{
asLines = sArmor.Split(asDelimiters, StringSplitOptions.None);
sArmoredData = sChecksum = sHeader = string.Empty;
for (i = 0; i < asLines.Length; i++)
{
switch (eArmorParserState)
{
case nArmorParserState.Start:
eArmorParserState = isKey ? ParseCheckForKeyHeader(asLines[i]) : ParseCheckForMessageHeader(asLines[i]);
if (eArmorParserState == nArmorParserState.Header)
{
sHeader = asLines[i];
}
break;
case nArmorParserState.Header:
case nArmorParserState.KeyValue: eArmorParserState = ParseCheckForBlankLine(asLines[i]); break;
case nArmorParserState.BlankLine:
case nArmorParserState.ArmoredData:
eArmorParserState = ParseCheckForData(asLines[i], sHeader);
if (eArmorParserState == nArmorParserState.ArmoredData)
{
sArmoredData += asLines[i];
}
else if (eArmorParserState == nArmorParserState.Checksum)
{
sChecksum = asLines[i];
}
break;
case nArmorParserState.Checksum: eArmorParserState = ParseCheckForFooter(asLines[i], sHeader); break;
}
}
if (eArmorParserState == nArmorParserState.Success)
{
StringConverter = new BytesAndTextUtility(sArmoredData);
abReturn = StringConverter.abBase64StringBytes;
if (abReturn == null)
{
_eStatus = nStatus.ParseError;
}
else
{
_eStatus = nStatus.OK;
if (!string.IsNullOrEmpty(sChecksum))
{
StringConverter = new BytesAndTextUtility(sChecksum.Substring(1));
abCrc24 = StringConverter.abBase64StringBytes;
if ((abCrc24 == null) || (abCrc24.Length != Crc24.ciCrc24Length))
{
_eStatus = nStatus.ParseError;
abReturn = null;
}
else
{
iCrc24Value = (abCrc24[0] << 16) | (abCrc24[1] << 8) | abCrc24[2];
Crc24Computed = new Crc24(abReturn);
if (iCrc24Value != Crc24Computed.iCrc24)
{
_eStatus = nStatus.CrcError;
abReturn = null;
}
}
}
}
}
else
{
_eStatus = nStatus.ParseError;
}
}
return(abReturn);
}
