|
|
Posted by Andrι Hδnsel on 07/11/06 23:32
Mel schrieb:
> On 2006-07-10 03:49:12 +1000, "AndrΓ© HΓ€nsel" <andre@webkr.de> said:
>
> > ImOk schrieb:
> >> is_dir ("./mysubdir/mysubsubdir" )
> >
> > That only determines if ./mysubdir/mysubsubdir is a directory. It makes
> > no statement about whether it is a subdirectory of another directory.
> >
> > is_dir('../../nosubdir) will return true (if the dir exits, of course),
> > although it is no subdir of the working dir.
>
> Wouldn't you just try to open it as a directory from the context of the
> parent and if it opens, then it's a subdir?
If there were no ".."s in the world, that would work.
I would have to get some kind of temporary chroot, but that would
probably also dereference the symlinks.
But another idea:
There connot be an escaped slash in a path, can it?
What does a path like "dir\/subdir" mean?
a) a subdirectory of the current path named "dir/subdir"
b) a directory named "dir\" with a subdirectory named "subdir"
I think, it's answer b.
If that is true, it will be safe to just explode the path by "/",
traverse it and convert every "." to nothing and every ".." to "go one
step up" (if I am not already in /).
Right?
Navigation:
[Reply to this message]
|