os-triggers/linux.js at main · prey/os-triggers · GitHub

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
const command = ['/usr/bin/dbus-monitor', '--system'];

const EVENTS = {
  network: {
    opts: { interface: 'org.freedesktop.NetworkManager' },
    events: {
      'StateChanged'       : ['network', 'state_changed']
    },
  },
  wifi: {
    opts: { interface: 'org.freedesktop.systemd1.Manager' },
    events: {
      'UnitRemoved'        : ['wifi', 'state_changed']
    },
  },
  power: {
    opts: {
      path: '/org/freedesktop/UPower/devices/line_power_ADP1',
      interface: 'org.freedesktop.DBus.Properties'
    },
    events: {
      'PropertiesChanged'  : ['battery', 'state_changed']
    }
  },
  system: {
    opts: {
      path: '/org/freedesktop/login1',
      interface: 'org.freedesktop.login1.Manager'
    },
    events: {
      'PrepareForSleep'    : ['system', 'state_changed']
    }
  },
  hostname: {
    opts: { interface: 'org.freedesktop.NetworkManager.Settings' },
    events: {
      'PropertiesChanged'  : ['hostname', 'state_changed']
    }
  },
  notifications: {
    opts: { interface: 'org.freedesktop.Notifications' },
    events: {
      'Notify'             : ['notification', 'opened'],
      'NotificationClosed' : ['notification', 'closed'],
      'ActionInvoked'      : ['notification', 'clicked']
    }
  },
  sound: {
    // opts: { path: '/com/canonical/indicator/sound/service' },
    opts: { interface: 'com.canonical.indicator.sound' },
    events: {
      'SoundStateUpdate'   : ['sound', 'state_updated']
    }
  },
  media: {
    opts: { interface: "org.freedesktop.Hal.Manage" },
    events: {
       'DeviceAdded'       : ['media', 'inserted'],
       'DeviceRemoved'     : ['media', 'removed']
    }
  },
  device: {
    opts: {
      path: '/org/freedesktop/Hal/devices/computer_logicaldev_input',
      interface: 'org.freedesktop.Hal.Device'
    },
    events: {
      'ButtonPressed'      : ['device', 'power_button_pressed']
    }
  }
}

var resolve_event = (data, type) => {
  if (type != 'all')
    return EVENTS[type].events[data.member];

  for (var type in EVENTS) {
    if (EVENTS[type].events[data.member]) {
      if (matches_opts(data, EVENTS[type].opts))
        return EVENTS[type].events[data.member];
    }
  }
};

var parse_sender = (line) => {
  var obj = {};

  line.split(/\s+/).forEach((arg) => {
    var split = arg.split('=');
    if (split[1])
      obj[split[0]] = split[1].replace(/;$/, '');
  });

  return obj;
};

var parse_args = (lines) => {
  return lines.filter((l) => {
    return !l.trim().match(/^\[|\]|\(|\)$/) && !l.match(/array|dict|variant/);
  }).map((l) => {
    return l.trim().split(',')[0].replace(/([^\s]+)/, '').trim()
  });
};

var matches_opts = (data, opts) => {
  var matches = true;

  for (var key in data) {
    if (opts[key] && opts[key] != data[key])
      matches = false;
  }
  return matches;
};

var matches_type = (data, type) => {
  if (type == 'all')
    return true;
  else
    return matches_opts(data, EVENTS[type].opts);
};


function Watcher(child, type, emitter) {

  var self = this;
  this.emitter = emitter || new Emitter();

  var parse_data = (data) => {

    data.toString().split('sender=').forEach((block) => {

      var lines = block.trim().split('\n'),
          data  = parse_sender(lines.shift());

      if (Object.keys(data).length > 0 && matches_type(data, type)) {

        var event = resolve_event(data, type),
            args = parse_args(lines);

        if (!event)
          return; // emitter.emit(data.member, args);

        self.emitter.emit(event[1], args);
      }

    })
  }

  child.stdout.on('data', parse_data);

  this.stop = () => {
    child.stdout.removeListener('data', parse_data);
  }

}

exports.command = command;
exports.Watcher = Watcher;
exports.EVENTS  = EVENTS;