public ResourceBE AddAttachment(ResourceBE existingRevision, Stream filestream, long filesize, MimeType mimeType, PageBE targetPage, string userDescription, string fileName, bool isMsWebDav)
{
if (_dekiContext.Instance.MaxFileSize < filesize)
{
throw new AttachmentMaxFileSizeAllowedInvalidArgumentException(_dekiContext.Instance.MaxFileSize);
}
var saveFileName = ValidateFileName(fileName);
if (existingRevision != null)
{
if (!saveFileName.EqualsInvariant(existingRevision.Name))
{
// An existing file is getting renamed. Make sure no file exists with the new name
var existingAttachment = GetPageAttachment(targetPage.ID, saveFileName);
if (existingAttachment != null)
{
throw new AttachmentExistsOnPageConflictException(saveFileName, targetPage.Title.AsUserFriendlyName());
}
}
}
// If file is found but has been deleted, create a new file.
if (existingRevision != null && existingRevision.ResourceIsDeleted)
{
existingRevision = null;
}
if (isMsWebDav)
{
_log.DebugFormat("Upload client is MD WebDAV, provided mimetype is: {0}", mimeType);
var extensionFileType = MimeType.FromFileExtension(Path.GetExtension(saveFileName));
if (!extensionFileType.Match(mimeType) || extensionFileType == MimeType.DefaultMimeType)
{
mimeType = existingRevision == null ? extensionFileType : existingRevision.MimeType;
_log.DebugFormat("using mimetype '{0}' instead", mimeType);
}
}
ResourceBE attachment;
var resourceContents = new ResourceContentBE((uint)filesize, mimeType);
var isUpdate = false;
if (existingRevision == null)
{
attachment = _resourceBL.BuildRevForNewResource((uint)targetPage.ID, ResourceBE.ParentType.PAGE, saveFileName, mimeType, (uint)filesize, null, ResourceBE.Type.FILE, _dekiContext.User.ID, resourceContents);
}
else
{
isUpdate = true;
attachment = BuildRevForContentUpdate(existingRevision, mimeType, (uint)filesize, null, saveFileName, resourceContents);
}
// rewrite mimetype to text/plain for certain extensions
string extension = attachment.FilenameExtension;
if (_dekiContext.Instance.FileExtensionForceAsTextList.Any(forcedExtensions => extension == forcedExtensions))
{
attachment.MimeType = MimeType.TEXT;
}
// Insert the attachment into the DB
attachment = SaveResource(attachment);
try {
// Save file to storage provider
_dekiContext.Instance.Storage.PutFile(attachment, SizeType.ORIGINAL, new StreamInfo(filestream, filesize, mimeType));
} catch (Exception x) {
_dekiContext.Instance.Log.WarnExceptionFormat(x, "Failed to save attachment to storage provider");
// Upon save failure, delete the record from the db.
_session.Resources_DeleteRevision(attachment.ResourceId, attachment.Revision);
throw;
}
// Set description property
if (!string.IsNullOrEmpty(userDescription))
{
attachment = SetDescription(attachment, userDescription);
}
// For images resolve width/height (if not in imagemagick's blacklist)
attachment = IdentifyUnknownImage(attachment);
// Pre render thumbnails of images
AttachmentPreviewBL.PreSaveAllPreviews(attachment);
PageBL.Touch(targetPage, DateTime.UtcNow);
//TODO MaxM: Connect with transaction
RecentChangeBL.AddFileRecentChange(targetPage.Touched, targetPage, _dekiContext.User, DekiResources.FILE_ADDED(attachment.Name), 0);
if (isUpdate)
{
_dekiContext.Instance.EventSink.AttachmentUpdate(_dekiContext.Now, attachment, _dekiContext.User);
}
else
{
_dekiContext.Instance.EventSink.AttachmentCreate(_dekiContext.Now, attachment, _dekiContext.User);
}
return(attachment);
}
