Panel: (Go-)SFTP server fails to load certificate sometimes

Created on 31 Jul 2019 · 2Comments · Source: pterodactyl/panel

Background (please complete the following information):

Panel or Daemon: SFTP-Server (standalone)
Version of Panel/Daemon: 1.0.4
Server's OS: Ubuntu 18.04.2 LTS
Your Computer's OS & Browser: n/a

Describe the bug
Sometimes - when bad luck is involved - the standalone SFTP server fails to load existing certificates when installed into a daemon that has been run before.
The ASN1 library of Go complains:

{"error": "asn1: structure error: integer not minimally-encoded"}

Often, this can be fixed by deleting the certificate files in config/.sftp/ and letting the standalone SFTP server generate them.

To Reproduce
Steps to reproduce the behavior:

Install a daemon
Run that daemon (with SFTP enabled)
Stop the daemon
Install the standalone SFTP server
Run it (with a grain of bad luck)

Expected behavior
The standalone SFTP server should start normally.

Actual behavior
The standalone SFTP server crashes.

Source

MarkL4YG

👍1

Most helpful comment

In that case, now the issue will show up in Google at least :sweat_smile:

MarkL4YG on 31 Jul 2019

😄3

All 2 comments

This is a pretty common bug, not sure why it happens but the fix is so simple I'm not worried about it. The end goal is moving entirely away from the internal SFTP server anyways, so this won't be a problem in the long run.