internal static string GenerateFilename()
{
if (Attachment.staticRandom == null)
{
Attachment.staticRandom = new Random((int)ExDateTime.Now.UtcTicks);
}
int num = Attachment.staticRandom.Next() % 100000;
return(EmailMessageHelpers.GenerateFileName(ref num));
}
internal static void CoreObjectUpdateStreamAttachmentName(CoreAttachment coreAttachment)
{
ICorePropertyBag propertyBag = coreAttachment.PropertyBag;
string text = (propertyBag.TryGetProperty(InternalSchema.AttachLongFileName) as string) ?? (propertyBag.TryGetProperty(InternalSchema.AttachFileName) as string);
string text2 = propertyBag.TryGetProperty(InternalSchema.DisplayName) as string;
string text3 = propertyBag.TryGetProperty(InternalSchema.AttachExtension) as string;
if (!string.IsNullOrEmpty(text))
{
text = Attachment.TrimFilename(text);
}
if (!string.IsNullOrEmpty(text2))
{
text2 = Attachment.TrimFilename(text2);
}
if (!string.IsNullOrEmpty(text3))
{
text3 = '.' + Attachment.TrimFilename(text3);
}
string text4 = null;
string text5 = null;
string text6 = null;
string text7 = null;
Attachment.TryFindFileExtension(text, out text5, out text4);
Attachment.TryFindFileExtension(text2, out text7, out text6);
if (!string.IsNullOrEmpty(text5))
{
text3 = text5;
}
if (!string.IsNullOrEmpty(text7) && string.Compare(text3, text7, StringComparison.OrdinalIgnoreCase) != 0)
{
text6 += text7;
}
if (string.IsNullOrEmpty(text4))
{
text4 = Attachment.GenerateFilename();
}
if (EmailMessageHelpers.IsGeneratedFileName(text4) && string.IsNullOrEmpty(text3))
{
string text8 = propertyBag.TryGetProperty(InternalSchema.AttachMimeTag) as string;
if (!string.IsNullOrEmpty(text8))
{
text3 = StreamAttachmentBase.GetExtensionByContentType(text8);
}
}
if (string.IsNullOrEmpty(text6))
{
text6 = text4;
}
if (!string.IsNullOrEmpty(text3))
{
text = text4 + text3;
text2 = text6 + text3;
}
else
{
text = text4;
text2 = text6;
propertyBag.Delete(InternalSchema.AttachExtension);
}
propertyBag[InternalSchema.AttachLongFileName] = text;
propertyBag[InternalSchema.DisplayName] = text2;
propertyBag[InternalSchema.AttachExtension] = (text3 ?? string.Empty);
bool flag = false;
ICoreItem containerItem = coreAttachment.ParentCollection.ContainerItem;
if (containerItem != null)
{
containerItem.PropertyBag.Load(new PropertyDefinition[]
{
InternalSchema.IsAssociated
});
flag = containerItem.PropertyBag.GetValueOrDefault <bool>(InternalSchema.IsAssociated, false);
}
if (!flag)
{
propertyBag[InternalSchema.AttachFileName] = Attachment.Make8x3FileName(text, coreAttachment != null && coreAttachment.Session != null && coreAttachment.Session.IsMoveUser);
}
}
