How to Retrieve Read/Write Access of Existed Extensible Storage

[Anonymous]

Now I know how to create a schema and store entity of this schema in a specific element.

Here is what makes me confused:

If I create a schema and set read/write accesslevel to Vendor or Application, how can I retrieve this access when I open a doc contains schemas I built before.

It seems there is no interface allow me to make a statement of current user identification and verify my accesslevel.

I noticed there are methods call Read/WriteAccesslevelGranted, but still confused how does it work.

Any help would be appreciated.

[jeremytammik · Accepted solution]

The credentials defining the vendor and add-in ids are defined in the add-in manifest, cf. developer guide in the online Revit help on

Add-in Registration

https://help.autodesk.com/view/RVT/2020/ENU/?guid=Revit_API_Revit_API_Developers_Guide_Introduction_...

Best regards,

Jeremy

[Anonymous]

Thank you, Jeremy !

Is that means I could not create a readonly schema by using pubished addin directly ? Because the ApplicationId and VendorId are exposed to everyone.

I intend to create an addin that may create a readonly or password guarded schema to store some message

[jeremytammik · Accepted solution]

The ActiveAddInId is read-only, so I do not suppose you can manipulate that to make it harder for an intruder to determine:

https://www.revitapidocs.com/2020/ff42e969-2daf-d436-2ded-860e87195823.htm

So if someone wants to read your extensible storage data, I assume they can do sop.

However, they need several pieces of information to achieve that:

• The vendor id (listed in the manifest)
• The add-in id (listed in the manifest)
• The extensible storage schema

However, there is still an very easy and quite obvious solution to create your own read-only data:

• Encrypt it

If you do so with a serious encryption algorithm, it will be very hard to crack.

You can also easily add various checks to ensure it is not tampered with.

Best regards,

Jeremy