blob: d5f1820ba7523b062ea17f2248eaa3426cc22b6d (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
|
{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.programs.rust-motd;
format = pkgs.formats.toml { };
in {
options.programs.rust-motd = {
enable = mkEnableOption (lib.mdDoc "rust-motd");
enableMotdInSSHD = mkOption {
default = true;
type = types.bool;
description = mdDoc ''
Whether to let `openssh` print the
result when entering a new `ssh`-session.
By default either nothing or a static file defined via
[](#opt-users.motd) is printed. Because of that,
the latter option is incompatible with this module.
'';
};
refreshInterval = mkOption {
default = "*:0/5";
type = types.str;
description = mdDoc ''
Interval in which the {manpage}`motd(5)` file is refreshed.
For possible formats, please refer to {manpage}`systemd.time(7)`.
'';
};
settings = mkOption {
type = types.submodule {
freeformType = format.type;
};
description = mdDoc ''
Settings on what to generate. Please read the
[upstream documentation](https://github.com/rust-motd/rust-motd/blob/main/README.md#configuration)
for further information.
'';
};
};
config = mkIf cfg.enable {
assertions = [
{ assertion = config.users.motd == null;
message = ''
`programs.rust-motd` is incompatible with `users.motd`!
'';
}
];
systemd.services.rust-motd = {
path = with pkgs; [ bash ];
documentation = [ "https://github.com/rust-motd/rust-motd/blob/v${pkgs.rust-motd.version}/README.md" ];
description = "motd generator";
serviceConfig = {
ExecStart = "${pkgs.writeShellScript "update-motd" ''
${pkgs.rust-motd}/bin/rust-motd ${format.generate "motd.conf" cfg.settings} > motd
''}";
CapabilityBoundingSet = [ "" ];
LockPersonality = true;
MemoryDenyWriteExecute = true;
NoNewPrivileges = true;
PrivateDevices = true;
PrivateTmp = true;
ProtectClock = true;
ProtectControlGroups = true;
ProtectHome = true;
ProtectHostname = true;
ProtectKernelModules = true;
ProtectKernelLogs = true;
ProtectKernelTunables = true;
ProtectSystem = "full";
StateDirectory = "rust-motd";
RestrictAddressFamilies = [ "AF_UNIX" ];
RestrictNamespaces = true;
RestrictRealtime = true;
RestrictSUIDSGID = true;
RemoveIPC = true;
WorkingDirectory = "/var/lib/rust-motd";
};
};
systemd.timers.rust-motd = {
wantedBy = [ "timers.target" ];
timerConfig.OnCalendar = cfg.refreshInterval;
};
security.pam.services.sshd.text = mkIf cfg.enableMotdInSSHD (mkDefault (mkAfter ''
session optional ${pkgs.pam}/lib/security/pam_motd.so motd=/var/lib/rust-motd/motd
''));
services.openssh.extraConfig = mkIf (cfg.settings ? last_login && cfg.settings.last_login != {}) ''
PrintLastLog no
'';
};
meta.maintainers = with maintainers; [ ma27 ];
}
|