Retrieve workpath and/or rootpath of store without hacking

Hi ALL.
I have small problem : I want access workpath and/or rootpath of store
(exatly it is class AbstractTxFileStoreService - really I need know
location of repository ) but agains
architecture of Slide we haven't direct access to Namespace/Stores etc
 ---  it is allow access us only over Proxy NameSpaceAccessToken.

 I want do it without hacks (means editing certains
 classes or reparsing Domain.xml again manually to retrive this
 params).

 Any help would be appreciated.

 Thank you.