campus: Attributes

campus maintains certain attributes on files when they are up- or downloaded. Some of these attributes are global, some are user specific. The following lists will describe the attributes in detail.

Security of the internal attributes

As the information that is kept in the attributes are private data of your ftp server users of your system will not be allowed to download to download or even list these attributes, but only if you have the maintaining of the attributes enabled globally or for the user that is logged in. In this case all attributes that start with "campus:" will be filtered out.
When an attribute that starts with "campus:" is uploaded, it is silently ignored.

Note: This policy is open to discussions, please write your comments to campus@stegemann.net.

Global attributes

Name	Internal name	Type	Description
Downloads	campus:DownloadCount	Integer	This attribute contains the number of times this file has been downloaded. The download count is increased after every successful download, broken trabsfers will not be counted!
Time of last download	campus:DownloadTime	Time	This is the time and date of the last time this file was downloaded by any user. The attribute is updated only for successful updates, too.
Time of upload	campus:UploadTime	Time	In this attribute the time and date of the upload of this file is kept. This attribute is not changed, but only added.
User	campus:User	String	In this attribute the user that has downloaded this file is stored.

User specific attributes

Note: User specific attributes may be useful when you have a larfe userbase and want to differenciate between these users. The downside on this is that no extra attributes written for user specific attributes, you have to add them manually for now.

Internal name Type Description

campus:DownloadCount:[Username] Integer These attributes work like their global equivalents described above, the only change being that the names reflects the name of the user that has uploaded the file.

campus:DownloadTime:[Username] Time

Extra attributes information

To be able to few the attributes in Tracker windows, there must be at least one file in that directory that has the corresponding Extra Attributes set. You can check these attributes in the FileTypes program from Preferences.
campus allows you to set the informations necessary for that automatically with the InstallExtraAttributes keyword for any MIME type. Because it is not possible to have these extra attribute informations on all file types you have to specifiy the types you want to add the extra attribute infos on.

Note: This is only needed for display reasons, it is independant from campus actually writing the attributes!