Files
clan-core/clanModules/sshd/roles/server.nix
2025-08-08 15:28:37 +10:00

107 lines
3.0 KiB
Nix

{
config,
pkgs,
lib,
...
}:
let
stringSet = list: builtins.attrNames (builtins.groupBy lib.id list);
domains = stringSet config.clan.sshd.certificate.searchDomains;
cfg = config.clan.sshd;
in
{
imports = [ ../shared.nix ];
options = {
clan.sshd.hostKeys.rsa.enable = lib.mkEnableOption "Generate RSA host key";
};
config = {
warnings = [
"The clan.sshd module is deprecated and will be removed on 2025-07-15.
Please migrate to user-maintained configuration or the new equivalent clan services
(https://docs.clan.lol/reference/clanServices)."
];
services.openssh = {
enable = true;
settings.PasswordAuthentication = false;
settings.HostCertificate = lib.mkIf (
cfg.certificate.searchDomains != [ ]
) config.clan.core.vars.generators.openssh-cert.files."ssh.id_ed25519-cert.pub".path;
hostKeys = [
{
path = config.clan.core.vars.generators.openssh.files."ssh.id_ed25519".path;
type = "ed25519";
}
]
++ lib.optional cfg.hostKeys.rsa.enable {
path = config.clan.core.vars.generators.openssh-rsa.files."ssh.id_rsa".path;
type = "rsa";
};
};
clan.core.vars.generators.openssh = {
files."ssh.id_ed25519" = { };
files."ssh.id_ed25519.pub".secret = false;
migrateFact = "openssh";
runtimeInputs = [
pkgs.coreutils
pkgs.openssh
];
script = ''
ssh-keygen -t ed25519 -N "" -C "" -f "$out"/ssh.id_ed25519
'';
};
programs.ssh.knownHosts.clan-sshd-self-ed25519 = {
hostNames = [
"localhost"
config.networking.hostName
]
++ (lib.optional (config.networking.domain != null) config.networking.fqdn);
publicKey = config.clan.core.vars.generators.openssh.files."ssh.id_ed25519.pub".value;
};
clan.core.vars.generators.openssh-rsa = lib.mkIf config.clan.sshd.hostKeys.rsa.enable {
files."ssh.id_rsa" = { };
files."ssh.id_rsa.pub".secret = false;
runtimeInputs = [
pkgs.coreutils
pkgs.openssh
];
script = ''
ssh-keygen -t rsa -b 4096 -N "" -C "" -f "$out"/ssh.id_rsa
'';
};
clan.core.vars.generators.openssh-cert = lib.mkIf (cfg.certificate.searchDomains != [ ]) {
files."ssh.id_ed25519-cert.pub".secret = false;
dependencies = [
"openssh"
"openssh-ca"
];
validation = {
name = config.clan.core.settings.machine.name;
domains = lib.genAttrs config.clan.sshd.certificate.searchDomains lib.id;
};
runtimeInputs = [
pkgs.openssh
pkgs.jq
];
script = ''
ssh-keygen \
-s $in/openssh-ca/id_ed25519 \
-I ${config.clan.core.settings.machine.name} \
-h \
-n ${lib.concatMapStringsSep "," (d: "${config.clan.core.settings.machine.name}.${d}") domains} \
$in/openssh/ssh.id_ed25519.pub
mv $in/openssh/ssh.id_ed25519-cert.pub "$out"/ssh.id_ed25519-cert.pub
'';
};
};
}