tlaternet-server/configuration/services/conduit/lib.nix

68 lines
1.9 KiB
Nix

{
lib,
writeShellScript,
formats,
replace-secret,
}:
let
replaceSecretBin = "${lib.getExe replace-secret}";
in
{
# Write a script that will set up the service's registration.yaml
# with secrets from systemd credentials.
#
# The credentials should be named `${id}_as-token` and
# `${id}_hs-token`.
#
# This registration file needs to be manually added to conduit by
# messaging the admin with the yaml file.
#
# TODO(tlater): Conduwuit seems to support a CLI interface for this,
# may want to migrate to that sometime.
writeRegistrationScript =
{
id, # Must be unique among all registered appservices/bots
url, # The URL on which the service listens
sender_localpart,
rate_limited ? false,
namespaces ? {
aliases = [ ];
rooms = [ ];
users = [ ];
},
extraSettings ? { },
# The location to place the file; assumes systemd runtime dir
runtimeRegistration ? "$RUNTIME_DIRECTORY/${id}-registration.yaml",
}:
let
registrationFile = (formats.yaml { }).generate "${id}-registration.yaml" (
{
inherit
id
url
sender_localpart
rate_limited
namespaces
;
as_token = "@AS_TOKEN@";
hs_token = "@HS_TOKEN@";
}
// extraSettings
);
in
{
inherit runtimeRegistration;
ExecStartPre = writeShellScript "${id}-registration-setup.sh" ''
cp -f ${registrationFile} "${runtimeRegistration}"
chmod 600 "${runtimeRegistration}"
# Write actual secrets into config
${replaceSecretBin} '@AS_TOKEN@' "$CREDENTIALS_DIRECTORY/${id}_as-token" "${runtimeRegistration}"
${replaceSecretBin} '@HS_TOKEN@' "$CREDENTIALS_DIRECTORY/${id}_hs-token" "${runtimeRegistration}"
chmod 400 "${runtimeRegistration}"
'';
};
}