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Merge pull request NixOS#261356 from l0b0/test/ssh-audit
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Original file line number | Diff line number | Diff line change |
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import ./make-test-python.nix ( | ||
{pkgs, ...}: let | ||
sshKeys = import (pkgs.path + "/nixos/tests/ssh-keys.nix") pkgs; | ||
sshUsername = "any-user"; | ||
serverName = "server"; | ||
clientName = "client"; | ||
sshAuditPort = 2222; | ||
in { | ||
name = "ssh"; | ||
|
||
nodes = { | ||
"${serverName}" = { | ||
networking.firewall.allowedTCPPorts = [ | ||
sshAuditPort | ||
]; | ||
services.openssh.enable = true; | ||
users.users."${sshUsername}" = { | ||
isNormalUser = true; | ||
openssh.authorizedKeys.keys = [ | ||
sshKeys.snakeOilPublicKey | ||
]; | ||
}; | ||
}; | ||
"${clientName}" = { | ||
programs.ssh = { | ||
ciphers = [ | ||
"aes128-ctr" | ||
"[email protected]" | ||
"aes192-ctr" | ||
"aes256-ctr" | ||
"[email protected]" | ||
"[email protected]" | ||
]; | ||
extraConfig = '' | ||
IdentitiesOnly yes | ||
''; | ||
hostKeyAlgorithms = [ | ||
"rsa-sha2-256" | ||
"[email protected]" | ||
"rsa-sha2-512" | ||
"[email protected]" | ||
"[email protected]" | ||
"[email protected]" | ||
"ssh-ed25519" | ||
"[email protected]" | ||
]; | ||
kexAlgorithms = [ | ||
"curve25519-sha256" | ||
"[email protected]" | ||
"diffie-hellman-group-exchange-sha256" | ||
"diffie-hellman-group16-sha512" | ||
"diffie-hellman-group18-sha512" | ||
"[email protected]" | ||
]; | ||
macs = [ | ||
"[email protected]" | ||
"[email protected]" | ||
"[email protected]" | ||
]; | ||
}; | ||
}; | ||
}; | ||
|
||
testScript = '' | ||
start_all() | ||
${serverName}.wait_for_open_port(22) | ||
# Should pass SSH server audit | ||
${serverName}.succeed("${pkgs.ssh-audit}/bin/ssh-audit 127.0.0.1") | ||
# Wait for client to be able to connect to the server | ||
${clientName}.wait_for_unit("network-online.target") | ||
# Set up trusted private key | ||
${clientName}.succeed("cat ${sshKeys.snakeOilPrivateKey} > privkey.snakeoil") | ||
${clientName}.succeed("chmod 600 privkey.snakeoil") | ||
# Fail fast and disable interactivity | ||
ssh_options = "-o BatchMode=yes -o ConnectTimeout=1 -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null" | ||
# Should deny root user | ||
${clientName}.fail(f"ssh {ssh_options} root@${serverName} true") | ||
# Should deny non-root user password login | ||
${clientName}.fail(f"ssh {ssh_options} -o PasswordAuthentication=yes ${sshUsername}@${serverName} true") | ||
# Should allow non-root user certificate login | ||
${clientName}.succeed(f"ssh {ssh_options} -i privkey.snakeoil ${sshUsername}@${serverName} true") | ||
# Should pass SSH client audit | ||
service_name = "ssh-audit.service" | ||
${serverName}.succeed(f"systemd-run --unit={service_name} ${pkgs.ssh-audit}/bin/ssh-audit --client-audit --port=${toString sshAuditPort}") | ||
${clientName}.sleep(5) # We can't use wait_for_open_port because ssh-audit exits as soon as anything talks to it | ||
${clientName}.execute( | ||
f"ssh {ssh_options} -i privkey.snakeoil -p ${toString sshAuditPort} ${sshUsername}@${serverName} true", | ||
check_return=False, | ||
timeout=10 | ||
) | ||
${serverName}.succeed(f"exit $(systemctl show --property=ExecMainStatus --value {service_name})") | ||
''; | ||
} | ||
) |
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