pyrox.dev
1{ config, lib, pkgs, ... }:
2
3with lib;
4
5let
6
7 cfg = config.services.xinetd;
8
9 configFile = pkgs.writeText "xinetd.conf"
10 ''
11 defaults
12 {
13 log_type = SYSLOG daemon info
14 log_on_failure = HOST
15 log_on_success = PID HOST DURATION EXIT
16 ${cfg.extraDefaults}
17 }
18
19 ${concatMapStrings makeService cfg.services}
20 '';
21
22 makeService = srv:
23 ''
24 service ${srv.name}
25 {
26 protocol = ${srv.protocol}
27 ${optionalString srv.unlisted "type = UNLISTED"}
28 ${optionalString (srv.flags != "") "flags = ${srv.flags}"}
29 socket_type = ${if srv.protocol == "udp" then "dgram" else "stream"}
30 ${optionalString (srv.port != 0) "port = ${toString srv.port}"}
31 wait = ${if srv.protocol == "udp" then "yes" else "no"}
32 user = ${srv.user}
33 server = ${srv.server}
34 ${optionalString (srv.serverArgs != "") "server_args = ${srv.serverArgs}"}
35 ${srv.extraConfig}
36 }
37 '';
38
39in
40
41{
42
43 ###### interface
44
45 options = {
46
47 services.xinetd.enable = mkEnableOption "the xinetd super-server daemon";
48
49 services.xinetd.extraDefaults = mkOption {
50 default = "";
51 type = types.lines;
52 description = ''
53 Additional configuration lines added to the default section of xinetd's configuration.
54 '';
55 };
56
57 services.xinetd.services = mkOption {
58 default = [];
59 description = ''
60 A list of services provided by xinetd.
61 '';
62
63 type = with types; listOf (submodule ({
64
65 options = {
66
67 name = mkOption {
68 type = types.str;
69 example = "login";
70 description = "Name of the service.";
71 };
72
73 protocol = mkOption {
74 type = types.str;
75 default = "tcp";
76 description = "Protocol of the service. Usually `tcp` or `udp`.";
77 };
78
79 port = mkOption {
80 type = types.port;
81 default = 0;
82 example = 123;
83 description = "Port number of the service.";
84 };
85
86 user = mkOption {
87 type = types.str;
88 default = "nobody";
89 description = "User account for the service";
90 };
91
92 server = mkOption {
93 type = types.str;
94 example = "/foo/bin/ftpd";
95 description = "Path of the program that implements the service.";
96 };
97
98 serverArgs = mkOption {
99 type = types.separatedString " ";
100 default = "";
101 description = "Command-line arguments for the server program.";
102 };
103
104 flags = mkOption {
105 type = types.str;
106 default = "";
107 description = "";
108 };
109
110 unlisted = mkOption {
111 type = types.bool;
112 default = false;
113 description = ''
114 Whether this server is listed in
115 {file}`/etc/services`. If so, the port
116 number can be omitted.
117 '';
118 };
119
120 extraConfig = mkOption {
121 type = types.lines;
122 default = "";
123 description = "Extra configuration-lines added to the section of the service.";
124 };
125
126 };
127
128 }));
129
130 };
131
132 };
133
134
135 ###### implementation
136
137 config = mkIf cfg.enable {
138 systemd.services.xinetd = {
139 description = "xinetd server";
140 after = [ "network.target" ];
141 wantedBy = [ "multi-user.target" ];
142 path = [ pkgs.xinetd ];
143 script = "exec xinetd -syslog daemon -dontfork -stayalive -f ${configFile}";
144 };
145 };
146}