blob: c923ddb5a7b5e04a0e1d8bf88518a7e045e943a7 (
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
|
{
config,
lib,
pkgs,
...
}:
let
cfg = config.services.scanservjs;
settings = {
scanimage = lib.getExe' config.hardware.sane.backends-package "scanimage";
convert = lib.getExe' pkgs.imagemagick "convert";
tesseract = lib.getExe pkgs.tesseract;
# it defaults to config/devices.json, but "config" dir doesn't exist by default and scanservjs doesn't create it
devicesPath = "devices.json";
}
// cfg.settings;
settingsFormat = pkgs.formats.json { };
leafs =
attrs:
builtins.concatLists (
lib.mapAttrsToList (k: v: if builtins.isAttrs v then leafs v else [ v ]) attrs
);
package = pkgs.scanservjs;
configFile = pkgs.writeText "config.local.js" ''
/* eslint-disable no-unused-vars */
module.exports = {
afterConfig(config) {
${builtins.concatStringsSep "" (
leafs (
lib.mapAttrsRecursive (path: val: ''
${builtins.concatStringsSep "." path} = ${builtins.toJSON val};
'') { config = settings; }
)
)}
${cfg.extraConfig}
},
afterDevices(devices) {
${cfg.extraDevicesConfig}
},
async afterScan(fileInfo) {
${cfg.runAfterScan}
},
actions: [
${builtins.concatStringsSep ",\n" cfg.extraActions}
],
};
'';
in
{
options.services.scanservjs = {
enable = lib.mkEnableOption "scanservjs";
stateDir = lib.mkOption {
type = lib.types.str;
default = "/var/lib/scanservjs";
description = ''
State directory for scanservjs.
'';
};
settings = lib.mkOption {
default = { };
description = ''
Config to set in config.local.js's `afterConfig`.
'';
type = lib.types.submodule {
freeformType = settingsFormat.type;
options.host = lib.mkOption {
type = lib.types.str;
description = "The IP to listen on.";
default = "127.0.0.1";
};
options.port = lib.mkOption {
type = lib.types.port;
description = "The port to listen on.";
default = 8080;
};
};
};
extraConfig = lib.mkOption {
default = "";
type = lib.types.lines;
description = ''
Extra code to add to config.local.js's `afterConfig`.
'';
};
extraDevicesConfig = lib.mkOption {
default = "";
type = lib.types.lines;
description = ''
Extra code to add to config.local.js's `afterDevices`.
'';
};
runAfterScan = lib.mkOption {
default = "";
type = lib.types.lines;
description = ''
Extra code to add to config.local.js's `afterScan`.
'';
};
extraActions = lib.mkOption {
default = [ ];
type = lib.types.listOf lib.types.lines;
description = "Actions to add to config.local.js's `actions`.";
};
};
config = lib.mkIf cfg.enable {
hardware.sane.enable = true;
users.users.scanservjs = {
group = "scanservjs";
extraGroups = [
"scanner"
"lp"
];
home = cfg.stateDir;
isSystemUser = true;
createHome = true;
};
users.groups.scanservjs = { };
systemd.tmpfiles.rules = [
"d ${cfg.stateDir}/data 0755 scanservjs scanservjs - -"
"d ${cfg.stateDir}/data/preview 0755 scanservjs scanservjs - -"
"L+ ${cfg.stateDir}/data/preview/default.jpg - - - - ${package}/lib/data/preview/default.jpg"
];
systemd.services.scanservjs = {
description = "scanservjs";
after = [ "network.target" ];
wantedBy = [ "multi-user.target" ];
# yes, those paths are configurable, but the config option isn't always used...
# a lot of the time scanservjs just takes those from PATH
path = with pkgs; [
coreutils
config.hardware.sane.backends-package
imagemagick
tesseract
];
environment = {
NIX_SCANSERVJS_CONFIG_PATH = configFile;
SANE_CONFIG_DIR = "/etc/sane-config";
LD_LIBRARY_PATH = "/etc/sane-libs";
};
serviceConfig = {
ExecStart = lib.getExe package;
Restart = "always";
User = "scanservjs";
Group = "scanservjs";
WorkingDirectory = cfg.stateDir;
};
};
};
}
|
