Limiting file/folder name length and file size

System

Hello,
Is there a way in Teamsite to restrict the length of filname and foldername? The files could be generated from DCTs or directly imported from the local machine.
While deploying, I'm writing the filename in the database, so I must have a max limit to it.
I know I can do it by having a validate task and then checking the length there, but then the user will get an error only while submitting.

Another question.
Is it possible to limit file size of certain file types while doing a file import? i.e. do not let the users import images that are more than 1MB etc.


TIA
-Ashish