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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 "nsCOMPtr.h"
#include "nsComponentManagerUtils.h"
#include "nsServiceManagerUtils.h"
#include "nsThreadUtils.h"
#include "nsXPCOM.h"
#include "nsXPCOMCID.h"
#include "nsIObserver.h"
#include "nsIObserverService.h"
#include "nsWifiMonitor.h"
#include "nsWifiAccessPoint.h"
#include "nsServiceManagerUtils.h"
#include "nsComponentManagerUtils.h"
#include "mozilla/Services.h"
#include "nsIInterfaceRequestor.h"
#include "nsIInterfaceRequestorUtils.h"
using namespace mozilla;
LazyLogModule gWifiMonitorLog("WifiMonitor");
NS_IMPL_ISUPPORTS(nsWifiMonitor,
nsIWifiMonitor,
nsIObserver,
nsIWifiScanResultsReady)
nsWifiMonitor::nsWifiMonitor()
{
nsCOMPtr<nsIObserverService> obsSvc = mozilla::services::GetObserverService();
if (obsSvc) {
obsSvc->AddObserver(this, "xpcom-shutdown", false);
}
LOG(("@@@@@ wifimonitor created\n"));
}
nsWifiMonitor::~nsWifiMonitor()
{
}
NS_IMETHODIMP
nsWifiMonitor::StartWatching(nsIWifiListener *aListener)
{
LOG(("@@@@@ nsWifiMonitor::StartWatching\n"));
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
if (!aListener) {
return NS_ERROR_NULL_POINTER;
}
mListeners.AppendElement(nsWifiListener(new nsMainThreadPtrHolder<nsIWifiListener>(aListener)));
if (!mTimer) {
mTimer = do_CreateInstance("@mozilla.org/timer;1");
mTimer->Init(this, 5000, nsITimer::TYPE_REPEATING_SLACK);
}
StartScan();
return NS_OK;
}
NS_IMETHODIMP
nsWifiMonitor::StopWatching(nsIWifiListener *aListener)
{
LOG(("@@@@@ nsWifiMonitor::StopWatching\n"));
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
if (!aListener) {
return NS_ERROR_NULL_POINTER;
}
for (uint32_t i = 0; i < mListeners.Length(); i++) {
if (mListeners[i].mListener == aListener) {
mListeners.RemoveElementAt(i);
break;
}
}
if (mListeners.Length() == 0) {
ClearTimer();
}
return NS_OK;
}
void
nsWifiMonitor::StartScan()
{
nsCOMPtr<nsIInterfaceRequestor> ir = do_GetService("@mozilla.org/telephony/system-worker-manager;1");
nsCOMPtr<nsIWifi> wifi = do_GetInterface(ir);
if (!wifi) {
return;
}
wifi->GetWifiScanResults(this);
}
NS_IMETHODIMP
nsWifiMonitor::Observe(nsISupports *subject, const char *topic,
const char16_t *data)
{
if (!strcmp(topic, "timer-callback")) {
LOG(("timer callback\n"));
StartScan();
return NS_OK;
}
if (!strcmp(topic, "xpcom-shutdown")) {
LOG(("Shutting down\n"));
ClearTimer();
return NS_OK;
}
return NS_ERROR_UNEXPECTED;
}
NS_IMETHODIMP
nsWifiMonitor::Onready(uint32_t count, nsIWifiScanResult **results)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
LOG(("@@@@@ About to send data to the wifi listeners\n"));
nsCOMArray<nsWifiAccessPoint> accessPoints;
for (uint32_t i = 0; i < count; i++) {
RefPtr<nsWifiAccessPoint> ap = new nsWifiAccessPoint();
nsString temp;
results[i]->GetBssid(temp);
// 00:00:00:00:00:00 --> 00-00-00-00-00-00
for (int32_t x=0; x<6; x++) {
temp.ReplaceSubstring(NS_LITERAL_STRING(":"), NS_LITERAL_STRING("-")); // would it be too much to ask for a ReplaceAll()?
}
nsCString mac;
mac.AssignWithConversion(temp);
results[i]->GetSsid(temp);
nsCString ssid;
ssid.AssignWithConversion(temp);
uint32_t signal;
results[i]->GetSignalStrength(&signal);
ap->setSignal(signal);
ap->setMacRaw(mac.get());
ap->setSSIDRaw(ssid.get(), ssid.Length());
accessPoints.AppendObject(ap);
}
bool accessPointsChanged = !AccessPointsEqual(accessPoints, mLastAccessPoints);
ReplaceArray(mLastAccessPoints, accessPoints);
nsTArray<nsIWifiAccessPoint*> ac;
uint32_t resultCount = mLastAccessPoints.Count();
for (uint32_t i = 0; i < resultCount; i++) {
ac.AppendElement(mLastAccessPoints[i]);
}
for (uint32_t i = 0; i < mListeners.Length(); i++) {
if (!mListeners[i].mHasSentData || accessPointsChanged) {
mListeners[i].mHasSentData = true;
mListeners[i].mListener->OnChange(ac.Elements(), ac.Length());
}
}
return NS_OK;
}
NS_IMETHODIMP
nsWifiMonitor::Onfailure()
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
LOG(("@@@@@ About to send error to the wifi listeners\n"));
for (uint32_t i = 0; i < mListeners.Length(); i++) {
mListeners[i].mListener->OnError(NS_ERROR_UNEXPECTED);
}
ClearTimer();
return NS_OK;
}
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