get custom application name from frontname

hi experts,

can you share how do i collect application name of a b2b webshop?

eg: application name is z_b2b, which login page is : host:port/z_b2b/b2b/init.do

i need to capture z_b2b this... assumed available parameter is BusinessObjectManager bom white derived from user session...

the idea is different application would have different business implementations..

thanks!

Shanti