1 /* This Source Code Form is subject to the terms of the Mozilla Public
2  * License, v. 2.0. If a copy of the MPL was not distributed with this
3  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
4 
5 #include <mach-o/dyld.h>
6 #include <dlfcn.h>
7 #include <unistd.h>
8 
9 #include "osx_wifi.h"
10 
11 #include "nsCOMArray.h"
12 #include "nsWifiMonitor.h"
13 #include "nsWifiAccessPoint.h"
14 
15 #include "nsServiceManagerUtils.h"
16 #include "nsComponentManagerUtils.h"
17 
18 using namespace mozilla;
19 
20 // defined in osx_corewlan.mm
21 // basically replaces accesspoints in the passed reference
22 // it lives in a separate file so that we can use objective c.
23 extern nsresult GetAccessPointsFromWLAN(
24     nsCOMArray<nsWifiAccessPoint>& accessPoints);
25 
DoScan()26 nsresult nsWifiMonitor::DoScan() {
27   // Regularly get the access point data.
28 
29   nsCOMArray<nsWifiAccessPoint> lastAccessPoints;
30   nsCOMArray<nsWifiAccessPoint> accessPoints;
31 
32   do {
33     nsresult rv = GetAccessPointsFromWLAN(accessPoints);
34     if (NS_FAILED(rv)) return rv;
35 
36     bool accessPointsChanged =
37         !AccessPointsEqual(accessPoints, lastAccessPoints);
38     ReplaceArray(lastAccessPoints, accessPoints);
39 
40     rv = CallWifiListeners(lastAccessPoints, accessPointsChanged);
41     NS_ENSURE_SUCCESS(rv, rv);
42 
43     // wait for some reasonable amount of time.  pref?
44     LOG(("waiting on monitor\n"));
45 
46     ReentrantMonitorAutoEnter mon(mReentrantMonitor);
47     mon.Wait(PR_SecondsToInterval(kDefaultWifiScanInterval));
48   } while (mKeepGoing);
49 
50   return NS_OK;
51 }
52