private void CloseHistoryStream()
{
try
{
if (this.streamLocked)
{
MapiStream mapiStream = this.oofHistoryStream as MapiStream;
mapiStream.UnlockRegion(0L, 1L, 1);
}
}
finally
{
this.oofHistoryStream.Dispose();
this.oofHistoryStream = null;
}
}
internal static void RemoveOofHistoryEntriesWithProperty(MailboxSession itemStore, bool oofEnabled, OofHistory.PropId propId, byte[] propValue)
{
MapiFolder mapiFolder = null;
MapiFolder mapiFolder2 = null;
MapiStream mapiStream = null;
bool flag = false;
byte[] initialBytes = oofEnabled ? OofHistory.InitialBytesOofStateOn : OofHistory.InitialBytesOofStateOff;
try
{
if (OofHistory.TryOpenFolder(itemStore, out mapiFolder, out mapiFolder2))
{
long hashCode = (long)itemStore.GetHashCode();
bool flag2;
mapiStream = OofHistory.OpenAndLockStream(mapiFolder2, initialBytes, hashCode, out flag2);
flag = true;
if (!flag2)
{
int num;
if (OofHistory.TryGetStreamLengthForEntryRemoval(hashCode, mapiStream, out num))
{
byte[] buffer;
if (OofHistory.TryReadAllFromStream(hashCode, mapiStream, num, out buffer))
{
int num2 = OofHistory.RemoveEntriesWithProperty(num, buffer, propId, propValue, hashCode);
if (num2 < num)
{
mapiStream.Seek(0L, SeekOrigin.Begin);
mapiStream.Write(buffer, 0, num2);
mapiStream.SetLength((long)num2);
}
}
}
}
}
}
finally
{
if (mapiStream != null)
{
try
{
if (flag)
{
mapiStream.UnlockRegion(0L, 1L, 1);
}
}
finally
{
mapiStream.Dispose();
}
}
if (mapiFolder != null)
{
mapiFolder.Dispose();
mapiFolder = null;
}
if (mapiFolder2 != null)
{
mapiFolder2.Dispose();
mapiFolder2 = null;
}
}
}
internal static void ClearOofHistory(MailboxSession itemStore, bool oofEnabled)
{
MapiFolder mapiFolder = null;
MapiFolder mapiFolder2 = null;
MapiStream mapiStream = null;
bool flag = false;
byte[] initialBytes = oofEnabled ? OofHistory.InitialBytesOofStateOn : OofHistory.InitialBytesOofStateOff;
try
{
if (OofHistory.TryOpenFolder(itemStore, out mapiFolder, out mapiFolder2))
{
long num = (long)itemStore.GetHashCode();
bool flag2;
mapiStream = OofHistory.OpenAndLockStream(mapiFolder2, initialBytes, num, out flag2);
flag = true;
if (!flag2)
{
byte[] array = new byte[2];
if (2 != mapiStream.Read(array, 0, 2))
{
OofHistory.ResetOofHistoryProperty(mapiStream, initialBytes, num);
}
else
{
bool flag3 = 0 != array[1];
if (flag3 == oofEnabled)
{
OofHistory.Tracer.TraceDebug <bool>(num, "Current OOF state {0} matches in OOF history and mailbox properties, clear is not executed.", oofEnabled);
}
else
{
OofHistory.ResetOofHistoryProperty(mapiStream, initialBytes, num);
}
}
}
}
}
finally
{
if (mapiStream != null)
{
try
{
if (flag)
{
mapiStream.UnlockRegion(0L, 1L, 1);
}
}
finally
{
mapiStream.Dispose();
}
}
if (mapiFolder != null)
{
mapiFolder.Dispose();
mapiFolder = null;
}
if (mapiFolder2 != null)
{
mapiFolder2.Dispose();
mapiFolder2 = null;
}
}
}