Online Manual / Configuration Files / Limiting what files can be uploaded.

Command: allowedFileTypes
Usage:

Allows you to limit what files are acceptable for the field you specify in name.

Arguments:

• name="<field>"
  Specify the name of the file field we are limiting.
  
  
• types="<wildcard list>"
  Specify the allowable mime-types. Allowing and denying certain file uploads are checked by MIME type. Click here for more information on MIME types.
  
  
• filenames="<wildcard list>"
  Specify the allowable file names.
  
  
• ignoreCaseFilenames
  If specified the script will ignore the filenames case when doing a match.

Example:

allowedFileTypes name="Image 1" types="image/*" filenames="*.jpg,*.gif" ignoreCaseFilenames

This example allows us to limit the file upload field named 'Image 1' to only images that have a .jpg or .gif extension. The file's extension case is ignored so the user can upload images that have a .JPG or .GIF extension, etc.

allowedFileTypes name="textFile 1" types="text/plain" filenames="*.txt"

This example allows us to limit the file upload field named 'textFile 1' to only plain text files that have a .txt extension. Since we did not specify 'ignoreCaseFilenames' in this example the file must have a .txt extension and not .TXT, etc.