nsresult nsWifiMonitor::DoScan() { nsCOMArray<nsWifiAccessPoint> accessPoints; mozilla::nsWifiScannerDBus wifiScanner(&accessPoints); nsCOMArray<nsWifiAccessPoint> lastAccessPoints; while (mKeepGoing) { accessPoints.Clear(); nsresult rv = wifiScanner.Scan(); NS_ENSURE_SUCCESS(rv, rv); bool accessPointsChanged = !AccessPointsEqual(accessPoints, lastAccessPoints); ReplaceArray(lastAccessPoints, accessPoints); rv = CallWifiListeners(lastAccessPoints, accessPointsChanged); NS_ENSURE_SUCCESS(rv, rv); LOG(("waiting on monitor\n")); mozilla::ReentrantMonitorAutoEnter mon(mReentrantMonitor); mon.Wait(PR_SecondsToInterval(kDefaultWifiScanInterval)); } return NS_OK; }
nsresult nsWifiMonitor::DoScan() { void* iwlib_handle = dlopen("libiw.so", RTLD_NOW); if (!iwlib_handle) { iwlib_handle = dlopen("libiw.so.29", RTLD_NOW); if (!iwlib_handle) { iwlib_handle = dlopen("libiw.so.30", RTLD_NOW); if (!iwlib_handle) { LOG(("Could not load libiw\n")); return NS_ERROR_NOT_AVAILABLE; } } } else { LOG(("Loaded libiw\n")); } iw_open_t iw_open = (iw_open_t) dlsym(iwlib_handle, "iw_sockets_open"); iw_enum_t iw_enum = (iw_enum_t) dlsym(iwlib_handle, "iw_enum_devices"); iw_stats_t iw_stats = (iw_stats_t)dlsym(iwlib_handle, "iw_get_stats"); if (!iw_open || !iw_enum || !iw_stats) { dlclose(iwlib_handle); LOG(("Could not load a symbol from iwlib.so\n")); return NS_ERROR_FAILURE; } int skfd = (*iw_open)(); if (skfd < 0) { dlclose(iwlib_handle); return NS_ERROR_FAILURE; } nsCOMArray<nsWifiAccessPoint> lastAccessPoints; nsCOMArray<nsWifiAccessPoint> accessPoints; char* args[] = {(char*) &accessPoints, (char*) iw_stats, nsnull }; while (mKeepGoing) { accessPoints.Clear(); (*iw_enum)(skfd, &scan_wifi, args, 1); PRBool accessPointsChanged = !AccessPointsEqual(accessPoints, lastAccessPoints); nsCOMArray<nsIWifiListener> currentListeners; { nsAutoMonitor mon(mMonitor); for (PRUint32 i = 0; i < mListeners.Length(); i++) { if (!mListeners[i].mHasSentData || accessPointsChanged) { mListeners[i].mHasSentData = PR_TRUE; currentListeners.AppendObject(mListeners[i].mListener); } } } ReplaceArray(lastAccessPoints, accessPoints); if (currentListeners.Count() > 0) { PRUint32 resultCount = lastAccessPoints.Count(); nsIWifiAccessPoint** result = static_cast<nsIWifiAccessPoint**> (nsMemory::Alloc(sizeof(nsIWifiAccessPoint*) * resultCount)); if (!result) { dlclose(iwlib_handle); return NS_ERROR_OUT_OF_MEMORY; } for (PRUint32 i = 0; i < resultCount; i++) result[i] = lastAccessPoints[i]; for (PRInt32 i = 0; i < currentListeners.Count(); i++) { LOG(("About to send data to the wifi listeners\n")); nsCOMPtr<nsIWifiListener> proxy; nsCOMPtr<nsIProxyObjectManager> proxyObjMgr = do_GetService("@mozilla.org/xpcomproxy;1"); proxyObjMgr->GetProxyForObject(NS_PROXY_TO_MAIN_THREAD, NS_GET_IID(nsIWifiListener), currentListeners[i], NS_PROXY_SYNC | NS_PROXY_ALWAYS, getter_AddRefs(proxy)); if (!proxy) { LOG(("There is no proxy available. this should never happen\n")); } else { nsresult rv = proxy->OnChange(result, resultCount); LOG( ("... sent %d\n", rv)); } } nsMemory::Free(result); } LOG(("waiting on monitor\n")); nsAutoMonitor mon(mMonitor); mon.Wait(PR_SecondsToInterval(60)); } iw_sockets_close(skfd); return NS_OK; }
nsresult nsWifiMonitor::DoScanWithCoreWLAN() { // Regularly get the access point data. nsCOMArray<nsWifiAccessPoint> lastAccessPoints; nsCOMArray<nsWifiAccessPoint> accessPoints; do { nsresult rv = GetAccessPointsFromWLAN(accessPoints); if (NS_FAILED(rv)) return rv; PRBool accessPointsChanged = !AccessPointsEqual(accessPoints, lastAccessPoints); nsCOMArray<nsIWifiListener> currentListeners; { nsAutoMonitor mon(mMonitor); for (PRUint32 i = 0; i < mListeners.Length(); i++) { if (!mListeners[i].mHasSentData || accessPointsChanged) { mListeners[i].mHasSentData = PR_TRUE; currentListeners.AppendObject(mListeners[i].mListener); } } } ReplaceArray(lastAccessPoints, accessPoints); if (currentListeners.Count() > 0) { PRUint32 resultCount = lastAccessPoints.Count(); nsIWifiAccessPoint** result = static_cast<nsIWifiAccessPoint**> (nsMemory::Alloc(sizeof(nsIWifiAccessPoint*) * resultCount)); if (!result) { return NS_ERROR_OUT_OF_MEMORY; } for (PRUint32 i = 0; i < resultCount; i++) result[i] = lastAccessPoints[i]; for (PRInt32 i = 0; i < currentListeners.Count(); i++) { LOG(("About to send data to the wifi listeners\n")); nsCOMPtr<nsIWifiListener> proxy; nsCOMPtr<nsIProxyObjectManager> proxyObjMgr = do_GetService("@mozilla.org/xpcomproxy;1"); proxyObjMgr->GetProxyForObject(NS_PROXY_TO_MAIN_THREAD, NS_GET_IID(nsIWifiListener), currentListeners[i], NS_PROXY_SYNC | NS_PROXY_ALWAYS, getter_AddRefs(proxy)); if (!proxy) { LOG(("There is no proxy available. this should never happen\n")); } else { nsresult rv = proxy->OnChange(result, resultCount); LOG( ("... sent %d\n", rv)); } } nsMemory::Free(result); } // wait for some reasonable amount of time. pref? LOG(("waiting on monitor\n")); nsAutoMonitor mon(mMonitor); mon.Wait(PR_SecondsToInterval(60)); } while (mKeepGoing); return NS_OK; }
nsresult nsWifiMonitor::DoScanOld() { void *apple_80211_library = dlopen( "/System/Library/PrivateFrameworks/Apple80211.framework/Apple80211", RTLD_LAZY); if (!apple_80211_library) return NS_ERROR_NOT_AVAILABLE; WirelessContextPtr wifi_context_; WirelessAttachFunction WirelessAttach_function_ = reinterpret_cast<WirelessAttachFunction>(dlsym(apple_80211_library, "WirelessAttach")); WirelessScanSplitFunction WirelessScanSplit_function_ = reinterpret_cast<WirelessScanSplitFunction>(dlsym(apple_80211_library, "WirelessScanSplit")); WirelessDetachFunction WirelessDetach_function_ = reinterpret_cast<WirelessDetachFunction>(dlsym(apple_80211_library, "WirelessDetach")); if (!WirelessAttach_function_ || !WirelessScanSplit_function_ || !WirelessDetach_function_) { dlclose(apple_80211_library); return NS_ERROR_NOT_AVAILABLE; } WIErr err = 0; err = (*WirelessAttach_function_)(&wifi_context_, 0); if (err != noErr) { printf("Error: WirelessAttach: %d\n", (int) err); dlclose(apple_80211_library); return NS_ERROR_FAILURE; } // Regularly get the access point data. nsCOMArray<nsWifiAccessPoint> lastAccessPoints; nsCOMArray<nsWifiAccessPoint> accessPoints; do { accessPoints.Clear(); CFArrayRef managed_access_points = NULL; CFArrayRef adhoc_access_points = NULL; if ((*WirelessScanSplit_function_)(wifi_context_, &managed_access_points, &adhoc_access_points, 0) != noErr) { return NS_ERROR_FAILURE; } if (managed_access_points == NULL) { return NS_ERROR_FAILURE; } int accessPointsCount = CFArrayGetCount(managed_access_points); for (int i = 0; i < accessPointsCount; ++i) { nsWifiAccessPoint* ap = new nsWifiAccessPoint(); if (!ap) continue; const WirelessNetworkInfo *access_point_info = reinterpret_cast<const WirelessNetworkInfo*>(CFDataGetBytePtr(reinterpret_cast<const CFDataRef>(CFArrayGetValueAtIndex(managed_access_points, i)))); ap->setMac(access_point_info->macAddress); // WirelessNetworkInfo::signal appears to be signal strength in dBm. ap->setSignal(access_point_info->signal); ap->setSSID(reinterpret_cast<const char*>(access_point_info->name), access_point_info->nameLen); accessPoints.AppendObject(ap); } PRBool accessPointsChanged = !AccessPointsEqual(accessPoints, lastAccessPoints); nsCOMArray<nsIWifiListener> currentListeners; { nsAutoMonitor mon(mMonitor); for (PRUint32 i = 0; i < mListeners.Length(); i++) { if (!mListeners[i].mHasSentData || accessPointsChanged) { mListeners[i].mHasSentData = PR_TRUE; currentListeners.AppendObject(mListeners[i].mListener); } } } ReplaceArray(lastAccessPoints, accessPoints); if (currentListeners.Count() > 0) { PRUint32 resultCount = lastAccessPoints.Count(); nsIWifiAccessPoint** result = static_cast<nsIWifiAccessPoint**> (nsMemory::Alloc(sizeof(nsIWifiAccessPoint*) * resultCount)); if (!result) { dlclose(apple_80211_library); return NS_ERROR_OUT_OF_MEMORY; } for (PRUint32 i = 0; i < resultCount; i++) result[i] = lastAccessPoints[i]; for (PRInt32 i = 0; i < currentListeners.Count(); i++) { LOG(("About to send data to the wifi listeners\n")); nsCOMPtr<nsIWifiListener> proxy; nsCOMPtr<nsIProxyObjectManager> proxyObjMgr = do_GetService("@mozilla.org/xpcomproxy;1"); proxyObjMgr->GetProxyForObject(NS_PROXY_TO_MAIN_THREAD, NS_GET_IID(nsIWifiListener), currentListeners[i], NS_PROXY_SYNC | NS_PROXY_ALWAYS, getter_AddRefs(proxy)); if (!proxy) { LOG(("There is no proxy available. this should never happen\n")); } else { nsresult rv = proxy->OnChange(result, resultCount); LOG( ("... sent %d\n", rv)); } } nsMemory::Free(result); } // wait for some reasonable amount of time. pref? LOG(("waiting on monitor\n")); nsAutoMonitor mon(mMonitor); mon.Wait(PR_SecondsToInterval(60)); } while (mKeepGoing); (*WirelessDetach_function_)(wifi_context_); dlclose(apple_80211_library); return NS_OK; }