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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "nsWifiMonitor.h"
// moz headers (alphabetical)
#include "nsCOMArray.h"
#include "nsComponentManagerUtils.h"
#include "nsServiceManagerUtils.h"
#include "nsWifiAccessPoint.h"
#include "win_wifiScanner.h"
using namespace mozilla;
/**
* `nsWifiMonitor` is declared in the cross-platform nsWifiMonitor.h and
* is mostly defined in the cross-platform nsWifiMonitor.cpp. This function
* is implemented in various platform-specific files but the implementation
* is almost identical in each file. We relegate the Windows-specific
* work to the `WinWifiScanner` class and deal with non-Windows-specific
* issues like calling listeners here. Hopefully this file can be merged
* with the other implementations of `nsWifiMonitor::DoScan` since a lot
* of the code is identical
*/
nsresult nsWifiMonitor::DoScan() {
if (!mWinWifiScanner) {
mWinWifiScanner = MakeUnique<WinWifiScanner>();
if (!mWinWifiScanner) {
// TODO: Probably return OOM error
return NS_ERROR_FAILURE;
}
}
// Regularly get the access point data.
nsCOMArray<nsWifiAccessPoint> lastAccessPoints;
nsCOMArray<nsWifiAccessPoint> accessPoints;
do {
accessPoints.Clear();
nsresult rv = mWinWifiScanner->GetAccessPointsFromWLAN(accessPoints);
if (NS_FAILED(rv)) {
return rv;
}
bool accessPointsChanged =
!AccessPointsEqual(accessPoints, lastAccessPoints);
ReplaceArray(lastAccessPoints, accessPoints);
rv = CallWifiListeners(lastAccessPoints, accessPointsChanged);
NS_ENSURE_SUCCESS(rv, rv);
// wait for some reasonable amount of time. pref?
LOG(("waiting on monitor\n"));
ReentrantMonitorAutoEnter mon(mReentrantMonitor);
if (mKeepGoing) {
mon.Wait(PR_SecondsToInterval(kDefaultWifiScanInterval));
}
} while (mKeepGoing);
return NS_OK;
}