[exvel]

I want to detect if the file is custom or from Steam. Is it possible?

[p3tsin]

What file?

The closest thing that comes to mind is messing with FileExists and use the 2nd param to look in valve's file system...

EDIT: on second thought linux servers dont use GCF files, do they?

[exvel]

I used term "Steam files" because that is how Valve called it in the pure_server_whitelist.txt. Custom files are all other files added by admins through the plugins (materials, models, etc).

Already tried FileExists (2nd param = true) but for some reason it returns "true" even for custom files.

[miniman]

you can do so
new bool:Custom=FileExists(File,false);
new bool:Valve=FileExists(File,true);

if(Valve&&!Custom)
//the file in the GCF
else if(!Valve&&!Custom)
//file does not exist
else
//file is custom EDIT: or duplicated... (in the GCF and outside in same dirs)

not tested but may work

[exvel]

This doesn't work. Already tried.

[Darkimmortal]

The second parameter means it will also check the .gcf/.pak files, not only check them.

You'll probably have to go down the extension route, and looking at the source behind FileExists would probably be a good place to start.