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|
{ config, pkgs, lib, ... }:
let
inherit (builtins) elem isBool isInt isString;
inherit (lib)
concatMapStringsSep concatStringsSep filterAttrs imap
mapAttrsToList mkIf mkOption optionalString ;
inherit (lib.types)
attrsOf bool either enum int listOf nullOr path str submodule ;
default = v: type: mkOption { type = type; default = v; };
explicit = filterAttrs (n: v: n != "_module" && v != null);
mandatory = t: mkOption { type = t; };
optional = t: mkOption { type = nullOr t; default = null; };
secret = either str (
submodule { options = { file = mandatory path; }; }
);
concatMapAttrsSep = s: f: attrs: concatStringsSep s (mapAttrsToList f attrs);
cfg = config.nixsap.apps.sproxy2;
show = v:
if v ? file then "!include '${v.file}'"
else if isInt v then "${toString v}"
else if isBool v then (if v then "true" else "false")
else "'${v}'";
top = concatMapAttrsSep "\n" (k: v: "${k}: ${show v}")
(filterAttrs (n: _:
! elem n [
"backends"
"enable"
"oauth2"
"ssl_cert_chain"
]
) (explicit cfg));
configFile = with cfg; pkgs.writeText "sproxy.yml" ''
---
${top}
${optionalString (ssl_cert_chain != [])
''ssl_cert_chain:
${concatMapStringsSep "\n" (f: " - ${show f}") ssl_cert_chain}''}
oauth2:
${concatMapAttrsSep "\n\n" (p: {client_id, client_secret, ...}: ''
${" ${p}"}:
client_id: ${show client_id}
client_secret: ${show client_secret}''
) cfg.oauth2}
backends:
${concatMapStringsSep "\n\n" (b:
let lines = mapAttrsToList (k: v: "${k}: ${show v}") (explicit b);
be = imap (i: l: " " + (if i == 1 then "- ${l}" else " ${l}")) lines;
in concatStringsSep "\n" be
) cfg.backends}
...
'';
maybeKey = a: if a ? file then a.file else null;
keys = [ cfg.ssl_key cfg.pgpassfile ( maybeKey cfg.key ) ]
++ mapAttrsToList (_: c: maybeKey c.client_secret) (explicit cfg.oauth2)
;
oauth2 = mkOption {
description = ''
OAuth2 providers. At least one is required.
Refer to Sproxy2 for supported providers.
'';
type = attrsOf (submodule {
options = {
client_id = mandatory str;
client_secret = mandatory secret;
};
});
};
backends = mkOption {
description = ''
Backends. At least one is required.
Refer to Sproxy2 for description.
'';
type = listOf (submodule {
options = {
address = optional str;
conn_count = optional int;
cookie_domain = optional str;
cookie_max_age = optional int;
cookie_name = optional str;
name = optional str;
port = optional int;
socket = optional path;
};
});
default = [];
};
in {
options.nixsap.apps.sproxy2 = {
enable = mkOption {
description = "Enable Sproxy2";
type = bool;
default = (cfg.backends != []);
};
inherit oauth2 backends;
user = mkOption {
description = "User to run as";
type = str;
default = "sproxy2";
};
home = mkOption {
description = "Sproxy2 home directory for internal data";
type = path;
default = "/sproxy2";
};
listen = mkOption {
description = "TCP port to listen on";
type = int;
default = 443;
};
listen80 = mkOption {
description = "Whether to listen on port 80 (and redirect to HTTPS)";
type = bool;
default = true;
};
http2 = mkOption {
description = "Whether HTTP/2 is enabled";
type = nullOr bool;
default = null;
};
ssl = mkOption {
description = "Whether SSL is enabled.";
type = nullOr bool;
default = null;
};
https_port = mkOption {
description = "Port used in redirect to HTTPS";
type = nullOr int;
default = null;
};
log_level = mkOption {
description = "Log level";
type = enum [ "error" "warn" "info" "debug" ];
default = "info";
};
key = mkOption {
description = "A key used to sign cookies and state (secret)";
type = nullOr secret;
default = null;
};
database = mkOption {
description = "PostgreSQL connection string";
type = nullOr str;
default = null;
example = "host=db.example.net user=sproxy dbname=sproxy port=6000";
};
pgpassfile = mkOption {
description = "PostgreSQL password file (secret)";
type = nullOr path;
default = null;
};
datafile = mkOption {
description = "Read permissions from this file";
type = nullOr path;
default = null;
};
ssl_key = mkOption {
description = "SSL key (PEM format) - secret";
type = nullOr path;
default = null;
};
ssl_cert = mkOption {
description = "SSL certificate (PEM format)";
type = nullOr path;
default = null;
};
ssl_cert_chain = mkOption {
description = "SSL certificate chain";
type = listOf path;
default = [];
};
};
config = mkIf cfg.enable {
nixsap.system.users.daemons = [ cfg.user ];
nixsap.deployment.keyrings.${cfg.user} = keys;
systemd.services.sproxy2 = {
description = "Sproxy2 secure HTTP proxy";
wantedBy = [ "multi-user.target" ];
wants = [ "keys.target" ];
after = [ "keys.target" "network.target" "local-fs.target" ];
preStart = ''
mkdir -p -- '${cfg.home}'
chown -Rc '${cfg.user}:${cfg.user}' -- '${cfg.home}'
chmod -Rc u=rwX,g=rX,o= -- '${cfg.home}'
'';
serviceConfig = {
ExecStart = "${pkgs.sproxy2}/bin/sproxy2 --config=${configFile}";
Restart = "always";
};
};
};
}
|
