/// <summary>
/// Uploads a file to predefined directory.
/// </summary>
/// <param name="execContext">Execution context</param>
/// <param name="settings">Custom defined settings in conficuration file.</param>
/// <returns>Dictionary of string objects containing the information of the uploaded files.</returns>
private object UploadFiles(IDataLoaderWriteContext execContext, WriteCustomSettings settings)
{
CheckMaxFileSpacePerDashboard(execContext, settings.FileRestrictions);
CreateDirectoryIfSuchDoesNotExist(settings.UploadFolder);
List <Dictionary <string, object> > result = new List <Dictionary <string, object> >();
double height = settings.PreviewHeight ?? 60D;
double width = settings.PreviewWidth ?? 120D;
string fileName;
string previewName;
HtmlEncoder encoder = HtmlEncoder.Default;
foreach (object item in execContext.ProcessingContext.InputModel.Data.Values)
{
if (item is IPostedFile postedFile)
{
fileName = RenameUploadedFileIfNameExists(postedFile.FileName, settings.UploadFolder);
if (postedFile.ContentType.IndexOf("image", StringComparison.InvariantCultureIgnoreCase) > -1 && _ImageValidator.GetValidMimeTypes.Any(s => postedFile.ContentType.IndexOf(s, StringComparison.InvariantCultureIgnoreCase) > -1 && _ImageValidator.ValidateIfStreamIsImage(postedFile.OpenReadStream(), s)))
{
using (IImageEditor imageEditor = new ImageEditor(postedFile))
{
try
{
imageEditor.Save(Path.Combine(settings.UploadFolder, fileName));
previewName = GeneratePreviewName(fileName);
imageEditor.Resize(width, height);
imageEditor.Save(Path.Combine(settings.UploadFolder, previewName));
}
catch (Exception ex)
{
throw ex;
}
}
}
else
{
using (var stream = new FileStream(Path.Combine(settings.UploadFolder, fileName), FileMode.Create))
{
postedFile.OpenReadStream().CopyTo(stream);
}
}
result.Add(new Dictionary <string, object>()
{
{ NAME, string.IsNullOrEmpty(postedFile.Name) ? postedFile.FileName : encoder.Encode(postedFile.Name) },//user input please escape
{ FILENAME, fileName },
{ CONTENTTYPE, postedFile.ContentType },
{ ORIGINALFILENAME, postedFile.FileName },
{ LENGTH, postedFile.Length }
});
}
}
return(result);
}
/// <summary>
/// Uploads or deletes new file to predefined directory
/// </summary>
/// <param name="execContext">Execution context</param>
/// <returns>null</returns>
protected override object Write(IDataLoaderWriteContext execContext)
{
//Get the configured directory
WriteCustomSettings settings = new WriteCustomSettings(execContext, execContext.PluginServiceManager.GetService <KraftGlobalConfigurationSettings>(typeof(KraftGlobalConfigurationSettings)));
if (execContext.Operation == OPERATION_DELETE)
{
string fileName = execContext.Evaluate("name").Value.ToString();
if (string.IsNullOrWhiteSpace(fileName))
{
throw new Exception("File name cannot be null, empty or white spaced.");
}
return(DeleteFile(settings.UploadFolder, fileName));
}
else if (execContext.Operation == OPERATION_INSERT)
{
return(UploadFiles(execContext, settings));
}
return(null);
}