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);
}
internal ZipEntryAttachment(string fileName, Attachment attachment, bool doNeedToFilterHtml, bool doNotSniff, bool isNotHtmlandNotXml)
{
this.fileName = fileName;
this.encodedfileNameBytes = ZipEntryAttachment.GetEncodedString(fileName);
this.attachmentId = attachment.Id;
this.doNeedToFilterHtml = doNeedToFilterHtml;
this.doNotSniff = doNotSniff;
this.isNotHtmlandNotXml = isNotHtmlandNotXml;
if (this.NeedsCompression(attachment))
{
this.CompressionMethod = 8;
this.GeneralPurposeBitFlag = 2056;
}
else
{
this.CompressionMethod = 0;
this.GeneralPurposeBitFlag = 2048;
}
this.CurrentDateTime = this.CurrentDosDateTime();
}
private static Stream GetContentsReplacementStream(Strings.IDs resource)
{
byte[] encodedString = ZipEntryAttachment.GetEncodedString(Strings.GetLocalizedString(resource));
return(new MemoryStream(encodedString, 0, encodedString.Length));
}
