blob: cb5410a5f15d87a544ac24fc2e031d68f5d0d3b4 (
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
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
|
{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.security.acme;
certOpts = { ... }: {
options = {
webroot = mkOption {
type = types.str;
description = ''
Where the webroot of the HTTP vhost is located.
<filename>.well-known/acme-challenge/</filename> directory
will be created automatically if it doesn't exist.
<literal>http://example.org/.well-known/acme-challenge/</literal> must also
be available (notice unencrypted HTTP).
'';
};
email = mkOption {
type = types.nullOr types.str;
default = null;
description = "Contact email address for the CA to be able to reach you.";
};
user = mkOption {
type = types.str;
default = "root";
description = "User running the ACME client.";
};
group = mkOption {
type = types.str;
default = "root";
description = "Group running the ACME client.";
};
allowKeysForGroup = mkOption {
type = types.bool;
default = false;
description = "Give read permissions to the specified group to read SSL private certificates.";
};
postRun = mkOption {
type = types.lines;
default = "";
example = "systemctl reload nginx.service";
description = ''
Commands to run after certificates are re-issued. Typically
the web server and other servers using certificates need to
be reloaded.
'';
};
plugins = mkOption {
type = types.listOf (types.enum [
"cert.der" "cert.pem" "chain.pem" "external.sh"
"fullchain.pem" "full.pem" "key.der" "key.pem" "account_key.json"
]);
default = [ "fullchain.pem" "key.pem" "account_key.json" ];
description = ''
Plugins to enable. With default settings simp_le will
store public certificate bundle in <filename>fullchain.pem</filename>
and private key in <filename>key.pem</filename> in its state directory.
'';
};
extraDomains = mkOption {
type = types.attrsOf (types.nullOr types.str);
default = {};
example = {
"example.org" = "/srv/http/nginx";
"mydomain.org" = null;
};
description = ''
Extra domain names for which certificates are to be issued, with their
own server roots if needed.
'';
};
};
};
in
{
###### interface
options = {
security.acme = {
directory = mkOption {
default = "/var/lib/acme";
type = types.str;
description = ''
Directory where certs and other state will be stored by default.
'';
};
validMin = mkOption {
type = types.int;
default = 30 * 24 * 3600;
description = "Minimum remaining validity before renewal in seconds.";
};
renewInterval = mkOption {
type = types.str;
default = "weekly";
description = ''
Systemd calendar expression when to check for renewal. See
<citerefentry><refentrytitle>systemd.time</refentrytitle>
<manvolnum>5</manvolnum></citerefentry>.
'';
};
certs = mkOption {
default = { };
type = types.loaOf types.optionSet;
description = ''
Attribute set of certificates to get signed and renewed.
'';
options = [ certOpts ];
example = {
"example.com" = {
webroot = "/var/www/challenges/";
email = "foo@example.com";
extraDomains = { "www.example.com" = null; "foo.example.com" = "/var/www/foo/"; };
};
"bar.example.com" = {
webroot = "/var/www/challenges/";
email = "bar@example.com";
};
};
};
};
};
###### implementation
config = mkMerge [
(mkIf (cfg.certs != { }) {
systemd.services = flip mapAttrs' cfg.certs (cert: data:
let
cpath = "${cfg.directory}/${cert}";
rights = if data.allowKeysForGroup then "750" else "700";
cmdline = [ "-v" "-d" cert "--default_root" data.webroot "--valid_min" cfg.validMin ]
++ optionals (data.email != null) [ "--email" data.email ]
++ concatMap (p: [ "-f" p ]) data.plugins
++ concatLists (mapAttrsToList (name: root: [ "-d" (if root == null then name else "${name}:${root}")]) data.extraDomains);
in nameValuePair
("acme-${cert}")
({
description = "Renew ACME Certificate for ${cert}";
after = [ "network.target" ];
serviceConfig = {
Type = "oneshot";
SuccessExitStatus = [ "0" "1" ];
PermissionsStartOnly = true;
User = data.user;
Group = data.group;
PrivateTmp = true;
};
path = [ pkgs.simp_le ];
preStart = ''
mkdir -p '${cfg.directory}'
if [ ! -d '${cpath}' ]; then
mkdir '${cpath}'
fi
chmod ${rights} '${cpath}'
chown -R '${data.user}:${data.group}' '${cpath}'
'';
script = ''
cd '${cpath}'
set +e
simp_le ${concatMapStringsSep " " (arg: escapeShellArg (toString arg)) cmdline}
EXITCODE=$?
set -e
echo "$EXITCODE" > /tmp/lastExitCode
exit "$EXITCODE"
'';
postStop = ''
if [ -e /tmp/lastExitCode ] && [ "$(cat /tmp/lastExitCode)" = "0" ]; then
echo "Executing postRun hook..."
${data.postRun}
fi
'';
})
);
systemd.timers = flip mapAttrs' cfg.certs (cert: data: nameValuePair
("acme-${cert}")
({
description = "Renew ACME Certificate for ${cert}";
wantedBy = [ "timers.target" ];
timerConfig = {
OnCalendar = cfg.renewInterval;
Unit = "acme-${cert}.service";
};
})
);
})
{ meta.maintainers = with lib.maintainers; [ abbradar fpletz globin ];
meta.doc = ./acme.xml;
}
];
}
|