[SSHD-730] Relative symbolic links with .. is not resolved properly by sftp readLink

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 1.1.0, 1.2.0, 1.3.0
• Fix Version/s: 2.0.0
• Assignee: Guillaume Nodet
• Reporter: Lukas Waldmann
• Created: 26/Feb/17 22:00
• Updated: 22/Feb/18 13:32
• Resolved: 22/Feb/18 13:32

Description

Using sftp to resolve symbolic links doesn't return proper resolution in case symbolic link contains ..
Since version 1.1 the sendLink function of SftpSubsystem uses
normalizedPath = SelectorUtils.normalizePath(unixPath, "/");
to normalize path
This function however return invalid path in case link contains ".."
So for example if link is "../test/file" than normalizePath returns "test/file" which is invalid because in can not be resolved properly in the context of the current directory which symbolic link is referring to.