I am looking for an Android app, or an option I might have overlooked which allows me to browse the files on my server. I think the usage boils down to something along the lines of: I fill in LDAP user credentials, it authenticates with the LDAP server and shows me a list of folders where that user has access to. From there it needs to be able to open (PDF) files with another application assigned by the user.
I've been searching the Play Store and there is a whole legion of "file managers" and the like, but none I have found so far seems to provide the use mentioned above. Applications I tried are: Asus file manager, FX file manager, X-plore, Total commander and File commander.
The application needs to be open source or if not available at least a trustworthy source is required as the files the user will need to open contain customer orders.
Since it's my first time posting: If any clarification/addition to the question is desired please let me know and I'll try to update the question with the requested details.