private Stream GetItemAttachmentStream(Attachment attachment, OutboundConversionOptions outboundConversionOptions)
{
Stream stream = Streams.CreateTemporaryStorageStream();
string text = null;
ItemAttachment itemAttachment = attachment as ItemAttachment;
using (Item item = itemAttachment.GetItem(StoreObjectSchema.ContentConversionProperties))
{
try
{
if (ItemConversion.IsItemClassConvertibleToMime(item.ClassName))
{
ItemConversion.ConvertItemToMime(item, stream, outboundConversionOptions);
text = ".eml";
}
else if (ObjectClass.IsCalendarItemCalendarItemOccurrenceOrRecurrenceException(item.ClassName))
{
(item as CalendarItemBase).ExportAsICAL(stream, "UTF-8", outboundConversionOptions);
text = ".ics";
}
else if (ObjectClass.IsContact(item.ClassName))
{
Contact.ExportVCard(item as Contact, stream, outboundConversionOptions);
text = ".vcf";
}
else
{
ItemConversion.ConvertItemToMsgStorage(item, stream, outboundConversionOptions);
}
}
catch (Exception)
{
stream = ZipEntryAttachment.GetContentsReplacementStream(-1706159495);
text = ".txt";
}
}
if (text != null)
{
this.fileName = this.GetConvertedItemFileName(this.fileName, text);
this.encodedfileNameBytes = ZipEntryAttachment.GetEncodedString(this.fileName);
}
stream.Position = 0L;
return(stream);
}
private Stream GetUnfilteredStream(Stream stream)
{
if (!stream.CanSeek)
{
throw new ArgumentException("stream", "Stream is required to support Seek operations, and does not");
}
if (!this.doNotSniff && this.isNotHtmlandNotXml && ZipEntryAttachment.CheckShouldRemoveContents(stream))
{
if (ExTraceGlobals.AttachmentHandlingTracer.IsTraceEnabled(TraceType.DebugTrace))
{
ExTraceGlobals.AttachmentHandlingTracer.TraceDebug <string, string>((long)this.GetHashCode(), "ZipEntryAttachment.GetUnfilteredStream: Return contents removed for attachment {0}: mailbox {1}", this.fileName, AttachmentUtilities.TryGetMailboxIdentityName());
}
return(ZipEntryAttachment.GetContentsReplacementStream(-1868113279));
}
if (ExTraceGlobals.AttachmentHandlingTracer.IsTraceEnabled(TraceType.DebugTrace))
{
ExTraceGlobals.AttachmentHandlingTracer.TraceDebug <string, string>((long)this.GetHashCode(), "ZipEntryAttachment.GetUnfilteredStream: Return original contents for attachment {0}: mailbox {1}", this.fileName, AttachmentUtilities.TryGetMailboxIdentityName());
}
return(stream);
}
