netwerk/wifi/nsWifiMonitorGonk.cpp

   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 "nsCOMPtr.h"
   6 #include "nsComponentManagerUtils.h"
   7 #include "nsServiceManagerUtils.h"
   8 #include "nsThreadUtils.h"
   9 #include "nsXPCOM.h"
  10 #include "nsXPCOMCID.h"
  11 #include "nsIObserver.h"
  12 #include "nsIObserverService.h"
  13 #include "nsWifiMonitor.h"
  14 #include "nsWifiAccessPoint.h"
  15
  16 #include "nsServiceManagerUtils.h"
  17 #include "nsComponentManagerUtils.h"
  18 #include "mozilla/Services.h"
  19
  20 #include "nsIInterfaceRequestor.h"
  21 #include "nsIInterfaceRequestorUtils.h"
  22
  23 using namespace mozilla;
  24
  25 #if defined(PR_LOGGING)
  26 PRLogModuleInfo *gWifiMonitorLog;
  27 #endif
  28
  29 NS_IMPL_ISUPPORTS3(nsWifiMonitor,
  30                    nsIWifiMonitor,
  31                    nsIObserver,
  32                    nsIWifiScanResultsReady)
  33
  34 nsWifiMonitor::nsWifiMonitor()
  35 {
  36 #if defined(PR_LOGGING)
  37   gWifiMonitorLog = PR_NewLogModule("WifiMonitor");
  38 #endif
  39
  40   nsCOMPtr<nsIObserverService> obsSvc = mozilla::services::GetObserverService();
  41   if (obsSvc) {
  42     obsSvc->AddObserver(this, "xpcom-shutdown", false);
  43   }
  44   LOG(("@@@@@ wifimonitor created\n"));
  45 }
  46
  47 nsWifiMonitor::~nsWifiMonitor()
  48 {
  49 }
  50
  51 NS_IMETHODIMP
  52 nsWifiMonitor::StartWatching(nsIWifiListener *aListener)
  53 {
  54   LOG(("@@@@@ nsWifiMonitor::StartWatching\n"));
  55   NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
  56   if (!aListener) {
  57     return NS_ERROR_NULL_POINTER;
  58   }
  59
  60   mListeners.AppendElement(nsWifiListener(new nsMainThreadPtrHolder<nsIWifiListener>(aListener)));
  61
  62   if (!mTimer) {
  63     mTimer = do_CreateInstance("@mozilla.org/timer;1");
  64     mTimer->Init(this, 5000, nsITimer::TYPE_REPEATING_SLACK);
  65   }
  66   return NS_OK;
  67 }
  68
  69 NS_IMETHODIMP
  70 nsWifiMonitor::StopWatching(nsIWifiListener *aListener)
  71 {
  72   LOG(("@@@@@ nsWifiMonitor::StopWatching\n"));
  73   NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
  74   if (!aListener) {
  75     return NS_ERROR_NULL_POINTER;
  76   }
  77
  78   for (uint32_t i = 0; i < mListeners.Length(); i++) {
  79     if (mListeners[i].mListener == aListener) {
  80       mListeners.RemoveElementAt(i);
  81       break;
  82     }
  83   }
  84
  85   if (mListeners.Length() == 0) {
  86     ClearTimer();
  87   }
  88   return NS_OK;
  89 }
  90
  91 NS_IMETHODIMP
  92 nsWifiMonitor::Observe(nsISupports *subject, const char *topic,
  93                        const PRUnichar *data)
  94 {
  95   if (!strcmp(topic, "timer-callback")) {
  96     LOG(("timer callback\n"));
  97
  98     nsCOMPtr<nsIInterfaceRequestor> ir = do_GetService("@mozilla.org/telephony/system-worker-manager;1");
  99     nsCOMPtr<nsIWifi> wifi = do_GetInterface(ir);
 100     if (!wifi) {
 101       return NS_ERROR_UNEXPECTED;
 102     }
 103
 104     wifi->GetWifiScanResults(this);
 105     return NS_OK;
 106   }
 107
 108   if (!strcmp(topic, "xpcom-shutdown")) {
 109     LOG(("Shutting down\n"));
 110     ClearTimer();
 111     return NS_OK;
 112   }
 113
 114   return NS_ERROR_UNEXPECTED;
 115 }
 116
 117 NS_IMETHODIMP
 118 nsWifiMonitor::Onready(uint32_t count, nsIWifiScanResult **results)
 119 {
 120   NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
 121   LOG(("@@@@@ About to send data to the wifi listeners\n"));
 122
 123   nsCOMArray<nsWifiAccessPoint> accessPoints;
 124
 125   for (uint32_t i = 0; i < count; i++) {
 126     nsRefPtr<nsWifiAccessPoint> ap = new nsWifiAccessPoint();
 127
 128     nsString temp;
 129     results[i]->GetBssid(temp);
 130     //   00:00:00:00:00:00 --> 00-00-00-00-00-00
 131     for (int32_t x=0; x<6; x++) {
 132       temp.ReplaceSubstring(NS_LITERAL_STRING(":"), NS_LITERAL_STRING("-")); // would it be too much to ask for a ReplaceAll()?
 133     }
 134
 135     nsCString mac;
 136     mac.AssignWithConversion(temp);
 137
 138     results[i]->GetSsid(temp);
 139
 140     nsCString ssid;
 141     ssid.AssignWithConversion(temp);
 142
 143     uint32_t signal;
 144     results[i]->GetSignalStrength(&signal);
 145
 146     ap->setSignal(signal);
 147     ap->setMacRaw(mac.get());
 148     ap->setSSIDRaw(ssid.get(), ssid.Length());
 149
 150     accessPoints.AppendObject(ap);
 151   }
 152
 153   bool accessPointsChanged = !AccessPointsEqual(accessPoints, mLastAccessPoints);
 154   ReplaceArray(mLastAccessPoints, accessPoints);
 155
 156   nsTArray<nsIWifiAccessPoint*> ac;
 157   uint32_t resultCount = accessPoints.Count();
 158   for (uint32_t i = 0; i < resultCount; i++) {
 159     ac.AppendElement(accessPoints[i]);
 160   }
 161
 162   for (uint32_t i = 0; i < mListeners.Length(); i++) {
 163     if (!mListeners[i].mHasSentData || accessPointsChanged) {
 164       mListeners[i].mHasSentData = true;
 165       mListeners[i].mListener->OnChange(ac.Elements(), ac.Length());
 166     }
 167   }
 168   return NS_OK;
 169 }
 170
 171 NS_IMETHODIMP
 172 nsWifiMonitor::Onfailure()
 173 {
 174   NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
 175   LOG(("@@@@@ About to send error to the wifi listeners\n"));
 176   for (uint32_t i = 0; i < mListeners.Length(); i++) {
 177     mListeners[i].mListener->OnError(NS_ERROR_UNEXPECTED);
 178   }
 179
 180   ClearTimer();
 181   return NS_OK;
 182 }