From ca444db4d3d147b0747b563bba8ff713d5b41353 Mon Sep 17 00:00:00 2001
From: Robert Ancell <robert.ancell@canonical.com>
Date: Thu, 11 Oct 2012 12:01:44 +1300
Subject: Get killswitch working

---
 src/rfkill.vala | 168 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 168 insertions(+)
 create mode 100644 src/rfkill.vala

(limited to 'src/rfkill.vala')

diff --git a/src/rfkill.vala b/src/rfkill.vala
new file mode 100644
index 0000000..ed7afbd
--- /dev/null
+++ b/src/rfkill.vala
@@ -0,0 +1,168 @@
+/*
+ * Copyright (C) 2012 Canonical Ltd.
+ * Author: Robert Ancell <robert.ancell@canonical.com>
+ *
+ * This program is free software: you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License as published by the Free Software
+ * Foundation, either version 3 of the License, or (at your option) any later
+ * version. See http://www.gnu.org/copyleft/gpl.html the full text of the
+ * license.
+ */
+
+public enum RFKillDeviceType
+{
+    ALL = 0,
+    WLAN,
+    BLUETOOTH,
+    UWB,
+    WIMAX,
+    WMAN
+}
+ 
+public class RFKillDevice
+{
+    public signal void changed ();
+
+    public bool software_lock
+    {
+        get { return _software_lock; }
+        set
+        {
+            var event = RFKillEvent ();
+            event.idx = idx;
+            event.op = RFKillOperation.CHANGE;
+            event.soft = value ? 1 : 0;
+            if (Posix.write (manager.fd, &event, 8) != 8)
+                return;
+        }
+    }
+    
+    public bool hardware_lock { get { return _hardware_lock; } }
+
+    public RFKillDeviceType device_type { get { return _device_type; } }
+
+    internal RFKillManager manager;
+    internal uint32 idx;
+    internal RFKillDeviceType _device_type;
+    internal bool _software_lock;
+    internal bool _hardware_lock;
+
+    internal RFKillDevice (RFKillManager manager, uint32 idx, RFKillDeviceType device_type, bool software_lock, bool hardware_lock)
+    {
+        this.manager = manager;
+        this.idx = idx;
+        _device_type = device_type;
+        _software_lock = software_lock;
+        _hardware_lock = hardware_lock;
+    }
+}
+
+public class RFKillManager : Object
+{
+    public signal void device_added (RFKillDevice device);
+    public signal void device_changed (RFKillDevice device);
+    public signal void device_deleted (RFKillDevice device);
+
+    public RFKillManager ()
+    {
+        _devices = new List<RFKillDevice> ();
+    }
+    
+    public void open ()
+    {
+        fd = Posix.open ("/dev/rfkill", Posix.O_RDWR);
+        Posix.fcntl (fd, Posix.F_SETFL, Posix.O_NONBLOCK);
+
+        /* Read initial state */
+        while (read_event ());
+
+        /* Monitor for events */
+        var channel = new IOChannel.unix_new (fd);
+        channel.add_watch (IOCondition.IN | IOCondition.HUP | IOCondition.ERR, () => { return read_event (); });
+    }
+
+    public List<RFKillDevice> get_devices ()
+    {
+        var devices = new List<RFKillDevice> ();
+        foreach (var device in _devices)
+            devices.append (device);
+        return devices;
+    }
+
+    public void set_software_lock (RFKillDeviceType type, bool lock_enabled)
+    {
+        var event = RFKillEvent ();
+        event.type = type;
+        event.op = RFKillOperation.CHANGE_ALL;
+        event.soft = lock_enabled ? 1 : 0;
+        if (Posix.write (fd, &event, 8) != 8)
+            return;
+    }
+
+    internal int fd = -1;
+    private List<RFKillDevice> _devices;
+
+    private bool read_event ()
+    {
+        var event = RFKillEvent ();
+        if (Posix.read (fd, &event, 8) != 8)
+            return false;
+
+        switch (event.op)
+        {
+        case RFKillOperation.ADD:
+            var device = new RFKillDevice (this, event.idx, (RFKillDeviceType) event.type, event.soft != 0, event.hard != 0);
+            _devices.append (device);
+            device_added (device);
+            break;
+        case RFKillOperation.DELETE:
+            var device = get_device (event.idx);
+            if (device != null)
+            {
+                _devices.remove (device);
+                device_deleted (device);
+            }
+            break;
+        case RFKillOperation.CHANGE:
+            var device = get_device (event.idx);
+            if (device != null)
+            {
+                device._software_lock = event.soft != 0;
+                device._hardware_lock = event.hard != 0;
+                device.changed ();
+                device_changed (device);
+            }
+            break;
+        }
+        stderr.printf ("idx=%u type=%d op=%d soft=%d hard=%d\n", event.idx, event.type, event.op, event.soft, event.hard);
+        return true;
+    }
+
+    private RFKillDevice? get_device (uint32 idx)
+    {
+        foreach (var device in _devices)
+        {
+            if (device.idx == idx)
+                return device;
+        }
+
+        return null;
+    }
+}
+
+private struct RFKillEvent
+{
+    uint32 idx;
+    uint8 type;
+    uint8 op;
+    uint8 soft;
+    uint8 hard;
+}
+
+private enum RFKillOperation
+{
+    ADD = 0,
+    DELETE,
+    CHANGE,
+    CHANGE_ALL
+}
-- 
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