blob: 7e6634cd239aa63e377e90722e5e1e9337027007 (
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
211
212
213
214
215
216
217
218
219
220
221
|
{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.services.xrdp;
confDir = pkgs.runCommand "xrdp.conf" { preferLocalBuild = true; } ''
mkdir -p $out
cp -r ${cfg.package}/etc/xrdp/* $out
chmod -R +w $out
cat > $out/startwm.sh <<EOF
#!/bin/sh
. /etc/profile
${lib.optionalString cfg.audio.enable "${cfg.audio.package}/libexec/pulsaudio-xrdp-module/pulseaudio_xrdp_init"}
${cfg.defaultWindowManager}
EOF
chmod +x $out/startwm.sh
substituteInPlace $out/xrdp.ini \
--replace "#rsakeys_ini=" "rsakeys_ini=/run/xrdp/rsakeys.ini" \
--replace "certificate=" "certificate=${cfg.sslCert}" \
--replace "key_file=" "key_file=${cfg.sslKey}" \
--replace LogFile=xrdp.log LogFile=/dev/null \
--replace EnableSyslog=true EnableSyslog=false
substituteInPlace $out/sesman.ini \
--replace LogFile=xrdp-sesman.log LogFile=/dev/null \
--replace EnableSyslog=1 EnableSyslog=0 \
--replace startwm.sh $out/startwm.sh \
--replace reconnectwm.sh $out/reconnectwm.sh \
# Ensure that clipboard works for non-ASCII characters
sed -i -e '/.*SessionVariables.*/ a\
LANG=${config.i18n.defaultLocale}\
LOCALE_ARCHIVE=${config.i18n.glibcLocales}/lib/locale/locale-archive
' $out/sesman.ini
${cfg.extraConfDirCommands}
'';
in
{
###### interface
options = {
services.xrdp = {
enable = mkEnableOption (lib.mdDoc "xrdp, the Remote Desktop Protocol server");
package = mkPackageOptionMD pkgs "xrdp" { };
audio = {
enable = mkEnableOption (lib.mdDoc "audio support for xrdp sessions. So far it only works with PulseAudio sessions on the server side. No PipeWire support yet");
package = mkPackageOptionMD pkgs "pulseaudio-module-xrdp" {};
};
port = mkOption {
type = types.port;
default = 3389;
description = lib.mdDoc ''
Specifies on which port the xrdp daemon listens.
'';
};
openFirewall = mkOption {
default = false;
type = types.bool;
description = lib.mdDoc "Whether to open the firewall for the specified RDP port.";
};
sslKey = mkOption {
type = types.str;
default = "/etc/xrdp/key.pem";
example = "/path/to/your/key.pem";
description = lib.mdDoc ''
ssl private key path
A self-signed certificate will be generated if file not exists.
'';
};
sslCert = mkOption {
type = types.str;
default = "/etc/xrdp/cert.pem";
example = "/path/to/your/cert.pem";
description = lib.mdDoc ''
ssl certificate path
A self-signed certificate will be generated if file not exists.
'';
};
defaultWindowManager = mkOption {
type = types.str;
default = "xterm";
example = "xfce4-session";
description = lib.mdDoc ''
The script to run when user log in, usually a window manager, e.g. "icewm", "xfce4-session"
This is per-user overridable, if file ~/startwm.sh exists it will be used instead.
'';
};
confDir = mkOption {
type = types.path;
default = confDir;
internal = true;
description = lib.mdDoc ''
Configuration directory of xrdp and sesman.
Changes to this must be made through extraConfDirCommands.
'';
readOnly = true;
};
extraConfDirCommands = mkOption {
type = types.str;
default = "";
description = lib.mdDoc ''
Extra commands to run on the default confDir derivation.
'';
example = ''
substituteInPlace $out/sesman.ini \
--replace LogLevel=INFO LogLevel=DEBUG \
--replace LogFile=/dev/null LogFile=/var/log/xrdp.log
'';
};
};
};
###### implementation
config = lib.mkMerge [
(mkIf cfg.audio.enable {
environment.systemPackages = [ cfg.audio.package ]; # needed for autostart
hardware.pulseaudio.extraModules = [ cfg.audio.package ];
})
(mkIf cfg.enable {
networking.firewall.allowedTCPPorts = mkIf cfg.openFirewall [ cfg.port ];
# xrdp can run X11 program even if "services.xserver.enable = false"
xdg = {
autostart.enable = true;
menus.enable = true;
mime.enable = true;
icons.enable = true;
};
fonts.enableDefaultPackages = mkDefault true;
environment.etc."xrdp".source = "${confDir}/*";
systemd = {
services.xrdp = {
wantedBy = [ "multi-user.target" ];
after = [ "network.target" ];
description = "xrdp daemon";
requires = [ "xrdp-sesman.service" ];
preStart = ''
# prepare directory for unix sockets (the sockets will be owned by loggedinuser:xrdp)
mkdir -p /tmp/.xrdp || true
chown xrdp:xrdp /tmp/.xrdp
chmod 3777 /tmp/.xrdp
# generate a self-signed certificate
if [ ! -s ${cfg.sslCert} -o ! -s ${cfg.sslKey} ]; then
mkdir -p $(dirname ${cfg.sslCert}) || true
mkdir -p $(dirname ${cfg.sslKey}) || true
${lib.getExe pkgs.openssl} req -x509 -newkey rsa:2048 -sha256 -nodes -days 365 \
-subj /C=US/ST=CA/L=Sunnyvale/O=xrdp/CN=www.xrdp.org \
-config ${cfg.package}/share/xrdp/openssl.conf \
-keyout ${cfg.sslKey} -out ${cfg.sslCert}
chown root:xrdp ${cfg.sslKey} ${cfg.sslCert}
chmod 440 ${cfg.sslKey} ${cfg.sslCert}
fi
if [ ! -s /run/xrdp/rsakeys.ini ]; then
mkdir -p /run/xrdp
${pkgs.xrdp}/bin/xrdp-keygen xrdp /run/xrdp/rsakeys.ini
fi
'';
serviceConfig = {
User = "xrdp";
Group = "xrdp";
PermissionsStartOnly = true;
ExecStart = "${pkgs.xrdp}/bin/xrdp --nodaemon --port ${toString cfg.port} --config ${confDir}/xrdp.ini";
};
};
services.xrdp-sesman = {
wantedBy = [ "multi-user.target" ];
after = [ "network.target" ];
description = "xrdp session manager";
restartIfChanged = false; # do not restart on "nixos-rebuild switch". like "display-manager", it can have many interactive programs as children
serviceConfig = {
ExecStart = "${pkgs.xrdp}/bin/xrdp-sesman --nodaemon --config ${confDir}/sesman.ini";
ExecStop = "${pkgs.coreutils}/bin/kill -INT $MAINPID";
};
};
};
users.users.xrdp = {
description = "xrdp daemon user";
isSystemUser = true;
group = "xrdp";
};
users.groups.xrdp = {};
security.pam.services.xrdp-sesman = {
allowNullPassword = true;
startSession = true;
};
})
];
}
|