blob: 8237c6f7b8f59bda38d08d961eac6da267b8a0a5 (
plain)
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
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
|
{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.services.gpg-agent;
gpgInitStr = ''
GPG_TTY="$(tty)"
export GPG_TTY
''
+ optionalString cfg.enableSshSupport
"${pkgs.gnupg}/bin/gpg-connect-agent updatestartuptty /bye > /dev/null";
in
{
meta.maintainers = [ maintainers.rycee ];
options = {
services.gpg-agent = {
enable = mkEnableOption "GnuPG private key agent";
defaultCacheTtl = mkOption {
type = types.nullOr types.int;
default = null;
description = ''
Set the time a cache entry is valid to the given number of
seconds.
'';
};
defaultCacheTtlSsh = mkOption {
type = types.nullOr types.int;
default = null;
description = ''
Set the time a cache entry used for SSH keys is valid to the
given number of seconds.
'';
};
maxCacheTtl = mkOption {
type = types.nullOr types.int;
default = null;
description = ''
Set the maximum time a cache entry is valid to n seconds. After this
time a cache entry will be expired even if it has been accessed
recently or has been set using gpg-preset-passphrase. The default is
2 hours (7200 seconds).
'';
};
maxCacheTtlSsh = mkOption {
type = types.nullOr types.int;
default = null;
description = ''
Set the maximum time a cache entry used for SSH keys is valid to n
seconds. After this time a cache entry will be expired even if it has
been accessed recently or has been set using gpg-preset-passphrase.
The default is 2 hours (7200 seconds).
'';
};
enableSshSupport = mkOption {
type = types.bool;
default = false;
description = ''
Whether to use the GnuPG key agent for SSH keys.
'';
};
sshKeys = mkOption {
type = types.nullOr (types.listOf types.str);
default = null;
description = ''
Which GPG keys (by keygrip) to expose as SSH keys.
'';
};
enableExtraSocket = mkOption {
type = types.bool;
default = false;
description = ''
Whether to enable extra socket of the GnuPG key agent (useful for GPG
Agent forwarding).
'';
};
verbose = mkOption {
type = types.bool;
default = false;
description = ''
Whether to produce verbose output.
'';
};
grabKeyboardAndMouse = mkOption {
type = types.bool;
default = true;
description = ''
Tell the pinentry to grab the keyboard and mouse. This
option should in general be used to avoid X-sniffing
attacks. When disabled, this option passes
<option>no-grab</option> setting to gpg-agent.
'';
};
enableScDaemon = mkOption {
type = types.bool;
default = true;
description = ''
Make use of the scdaemon tool. This option has the effect of
enabling the ability to do smartcard operations. When
disabled, this option passes
<option>disable-scdaemon</option> setting to gpg-agent.
'';
};
extraConfig = mkOption {
type = types.lines;
default = "";
example = ''
allow-emacs-pinentry
allow-loopback-pinentry
'';
description = ''
Extra configuration lines to append to the gpg-agent
configuration file.
'';
};
pinentryFlavor = mkOption {
type = types.nullOr (types.enum pkgs.pinentry.flavors);
example = "gnome3";
default = "gtk2";
description = ''
Which pinentry interface to use. If not
<literal>null</literal>, it sets
<option>pinentry-program</option> in
<filename>gpg-agent.conf</filename>. Beware that
<literal>pinentry-gnome3</literal> may not work on non-Gnome
systems. You can fix it by adding the following to your
system configuration:
<programlisting language="nix">
services.dbus.packages = [ pkgs.gcr ];
</programlisting>
For this reason, the default is <literal>gtk2</literal> for
now.
'';
};
};
};
config = mkIf cfg.enable (mkMerge [
{
home.file.".gnupg/gpg-agent.conf".text = concatStringsSep "\n" (
optional (cfg.enableSshSupport) "enable-ssh-support"
++
optional (!cfg.grabKeyboardAndMouse) "no-grab"
++
optional (!cfg.enableScDaemon) "disable-scdaemon"
++
optional (cfg.defaultCacheTtl != null)
"default-cache-ttl ${toString cfg.defaultCacheTtl}"
++
optional (cfg.defaultCacheTtlSsh != null)
"default-cache-ttl-ssh ${toString cfg.defaultCacheTtlSsh}"
++
optional (cfg.maxCacheTtl != null)
"max-cache-ttl ${toString cfg.maxCacheTtl}"
++
optional (cfg.maxCacheTtlSsh != null)
"max-cache-ttl-ssh ${toString cfg.maxCacheTtlSsh}"
++
optional (cfg.pinentryFlavor != null)
"pinentry-program ${pkgs.pinentry.${cfg.pinentryFlavor}}/bin/pinentry"
++
[ cfg.extraConfig ]
);
home.sessionVariables =
optionalAttrs cfg.enableSshSupport {
SSH_AUTH_SOCK = "$(${pkgs.gnupg}/bin/gpgconf --list-dirs agent-ssh-socket)";
};
programs.bash.initExtra = gpgInitStr;
programs.zsh.initExtra = gpgInitStr;
programs.fish.interactiveShellInit = ''
set -gx GPG_TTY (tty)
'';
}
(mkIf (cfg.sshKeys != null) {
# Trailing newlines are important
home.file.".gnupg/sshcontrol".text = concatMapStrings (s: "${s}\n") cfg.sshKeys;
})
# The systemd units below are direct translations of the
# descriptions in the
#
# ${pkgs.gnupg}/share/doc/gnupg/examples/systemd-user
#
# directory.
{
systemd.user.services.gpg-agent = {
Unit = {
Description = "GnuPG cryptographic agent and passphrase cache";
Documentation = "man:gpg-agent(1)";
Requires = "gpg-agent.socket";
After = "gpg-agent.socket";
# This is a socket-activated service:
RefuseManualStart = true;
};
Service = {
ExecStart = "${pkgs.gnupg}/bin/gpg-agent --supervised"
+ optionalString cfg.verbose " --verbose";
ExecReload = "${pkgs.gnupg}/bin/gpgconf --reload gpg-agent";
};
};
systemd.user.sockets.gpg-agent = {
Unit = {
Description = "GnuPG cryptographic agent and passphrase cache";
Documentation = "man:gpg-agent(1)";
};
Socket = {
ListenStream = "%t/gnupg/S.gpg-agent";
FileDescriptorName = "std";
SocketMode = "0600";
DirectoryMode = "0700";
};
Install = {
WantedBy = [ "sockets.target" ];
};
};
}
(mkIf cfg.enableSshSupport {
systemd.user.sockets.gpg-agent-ssh = {
Unit = {
Description = "GnuPG cryptographic agent (ssh-agent emulation)";
Documentation = "man:gpg-agent(1) man:ssh-add(1) man:ssh-agent(1) man:ssh(1)";
};
Socket = {
ListenStream = "%t/gnupg/S.gpg-agent.ssh";
FileDescriptorName = "ssh";
Service = "gpg-agent.service";
SocketMode = "0600";
DirectoryMode = "0700";
};
Install = {
WantedBy = [ "sockets.target" ];
};
};
})
(mkIf cfg.enableExtraSocket {
systemd.user.sockets.gpg-agent-extra = {
Unit = {
Description = "GnuPG cryptographic agent and passphrase cache (restricted)";
Documentation = "man:gpg-agent(1) man:ssh(1)";
};
Socket = {
ListenStream = "%t/gnupg/S.gpg-agent.extra";
FileDescriptorName = "extra";
Service = "gpg-agent.service";
SocketMode = "0600";
DirectoryMode = "0700";
};
Install = {
WantedBy = [ "sockets.target" ];
};
};
})
]);
}
|
