dropbear/test/test_svrauth.py
Matt Johnston 10875e8524 Fix SSH_PUBKEYINFO, limit characters, add tests
We fix a bad_bufptr() failure from a previous commit. We now limit
the allowed characters to those that will definitely be safe
in a shell. Some scripts/programs may use arbitrary environment
variables without escaping correctly - that could be a problem
in a restricted environment.

The current allowed set is a-z A-Z 0-9 .,_-+@

This also adds a test for SSH_PUBKEYINFO, by default it only runs
under github actions (or "act -j build").
2022-03-16 17:23:58 +08:00

31 lines
1.3 KiB
Python

from test_dropbear import *
import signal
import queue
import socket
import os
from pathlib import Path
# Tests for server side authentication
# Requires keyfile and authorized_keys set up in github action build.yml
@pytest.mark.skipif('DBTEST_IN_ACTION' not in os.environ, reason="DBTEST_PUBKEYINFO not set")
def test_pubkeyinfo(request, dropbear):
kf = str(Path.home() / ".ssh/id_dropbear_key2")
r = dbclient(request, "-i", kf, "echo -n $SSH_PUBKEYINFO", capture_output=True)
# stop at first space
assert r.stdout.decode() == "key2"
@pytest.mark.skipif('DBTEST_IN_ACTION' not in os.environ, reason="DBTEST_PUBKEYINFO not set")
def test_pubkeyinfo_special(request, dropbear):
kf = str(Path.home() / ".ssh/id_dropbear_key3")
r = dbclient(request, "-i", kf, "echo -n $SSH_PUBKEYINFO", capture_output=True)
# comment contains special characters so the SSH_PUBKEYINFO should not be set
assert r.stdout.decode() == ""
@pytest.mark.skipif('DBTEST_IN_ACTION' not in os.environ, reason="DBTEST_PUBKEYINFO not set")
def test_pubkeyinfo_okchar(request, dropbear):
kf = str(Path.home() / ".ssh/id_dropbear_key4")
r = dbclient(request, "-i", kf, "echo -n $SSH_PUBKEYINFO", capture_output=True)
# comment contains special characters so the SSH_PUBKEYINFO should not be set
assert r.stdout.decode() == "key4,char"