Can I use SharePoint?

Hello,

I wrote a report program, wherein I'm downloading the Material master data (MARA + MARC + MBEW etc...) into a excel of the LAN folder, user is specifying the destination folder (LAN folder) address in the selection screen so my program is downloading the data into LAN folder's excel file, well, but now users are asking to download into a MS SharePoint folder, pl. let us know how to download the data into a SharePoint folder's excel file? Any additional authorizations check/in place?

Thank you