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|
{
config,
lib,
username,
...
}:
let
cfg = config.os.srv.ssh;
keys.main = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIC610CJfgc3yII7MpLVqzEzQGa8Tsm+dih+CTXHXTnv4";
in
{
options.os.srv.ssh = {
server = {
enable = lib.mkEnableOption "enables the ssh server module";
enableInitrd = lib.mkEnableOption "enables ssh access during initrd";
enableWireguard = lib.mkEnableOption "only allows connections from wireguard";
};
client = {
enable = lib.mkEnableOption "enables the ssh client module";
createAliases = lib.mkEnableOption "enables system-wide SSH shortcuts";
};
enableSigning = lib.mkEnableOption "enables signing git commits with ssh keys";
};
config = lib.mkMerge [
(lib.mkIf cfg.server.enable {
services.openssh = {
enable = true;
hostKeys = [
{
path = "/etc/ssh/ssh_host_ed25519_key";
type = "ed25519";
}
];
settings = {
PasswordAuthentication = false;
KbdInteractiveAuthentication = false;
PermitRootLogin = "no";
PubkeyAcceptedAlgorithms = "ssh-ed25519";
};
};
users.users.${username}.openssh.authorizedKeys.keys = [
"${keys.main} adikro@disroot.org"
];
})
(lib.mkIf (cfg.server.enable && cfg.server.enableInitrd) {
assertions = [
{
assertion = config.os.srv.sops.enable;
message = "required for storing the ssh key";
}
];
sops.secrets."initrd_ssh_key" = {
path = "/etc/secrets/initrd/ssh_host_ed25519_key";
};
boot = {
initrd = {
secrets = {
"/etc/secrets/initrd/ssh_host_ed25519_key" = config.sops.secrets.initrd_ssh_key.path;
};
network = {
enable = true;
ssh = {
enable = true;
port = 2222;
authorizedKeys = [ "${keys.main}" ];
hostKeys = [ "/etc/secrets/initrd/ssh_host_ed25519_key" ];
};
};
};
kernelParams = [ "ip=dhcp" ];
};
})
(lib.mkIf (cfg.server.enable && cfg.server.enableWireguard) {
services.openssh.listenAddresses = [
{
addr = "10.255.0.1";
}
];
})
(lib.mkIf cfg.client.enable {
programs.ssh.startAgent = true;
services.gnome.gcr-ssh-agent.enable = false;
})
(lib.mkIf (cfg.client.enable && cfg.client.createAliases) {
programs.ssh.extraConfig = ''
Host github.com codeberg.org
IdentityFile /home/${username}/.ssh/main_id_ed25519.pub
IdentitiesOnly yes
User git
Host oci
HostName 130.162.223.123
User opc
Host bibus
HostName bibus.top
User opc
Host bibus-local
HostName 10.255.0.1
user opc
'';
systemd.tmpfiles.rules = [
"d /home/${username}/.ssh 0700 ${username} users - -"
"f /home/${username}/.ssh/main_id_ed25519.pub 0644 ${username} users - ${keys.main}"
];
})
(lib.mkIf cfg.enableSigning {
environment.etc."ssh/allowed_signers".text = "adikro@disroot.org ${keys.main}";
})
];
}
|
