gecko-dev/netwerk/wifi/nsWifiScannerMac.cpp
Michael Wu d2b70213ac Bug 675553 - Switch from PRBool to bool on a CLOSED TREE , r=bsmedberg,khuey,bz,cjones
--HG--
rename : tools/trace-malloc/bloatblame.c => tools/trace-malloc/bloatblame.cpp
2011-09-28 23:19:26 -07:00

200 lines
6.3 KiB
C++

/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Geolocation.
*
* The Initial Developer of the Original Code is Mozilla Foundation
* Portions created by the Initial Developer are Copyright (C) 2008
* the Initial Developer. All Rights Reserved.
*
* This is a derivative of work done by Google under a BSD style License.
* See: http://gears.googlecode.com/svn/trunk/gears/geolocation/
*
* Contributor(s):
* Doug Turner <dougt@meer.net> (Original Author)
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include <mach-o/dyld.h>
#include <dlfcn.h>
#include <unistd.h>
#include "osx_wifi.h"
#include "nsAutoPtr.h"
#include "nsCOMArray.h"
#include "nsWifiMonitor.h"
#include "nsWifiAccessPoint.h"
#include "nsServiceManagerUtils.h"
#include "nsComponentManagerUtils.h"
#include "nsIMutableArray.h"
using namespace mozilla;
// defined in osx_corewlan.mm
// basically relaces accesspoints in the passed reference
// it lives in a separate file so that we can use objective c.
extern nsresult GetAccessPointsFromWLAN(nsCOMArray<nsWifiAccessPoint> &accessPoints);
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;
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);
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);
}
bool accessPointsChanged = !AccessPointsEqual(accessPoints, lastAccessPoints);
ReplaceArray(lastAccessPoints, accessPoints);
nsresult rv = CallWifiListeners(lastAccessPoints, accessPointsChanged);
if (NS_FAILED(rv)) {
dlclose(apple_80211_library);
return rv;
}
// wait for some reasonable amount of time. pref?
LOG(("waiting on monitor\n"));
ReentrantMonitorAutoEnter mon(mReentrantMonitor);
mon.Wait(PR_SecondsToInterval(60));
}
while (mKeepGoing);
(*WirelessDetach_function_)(wifi_context_);
dlclose(apple_80211_library);
return NS_OK;
}
nsresult
nsWifiMonitor::DoScan()
{
nsresult rv = DoScanWithCoreWLAN();
// we can remove this once we stop caring about 10.5.
if (NS_FAILED(rv))
rv = DoScanOld();
return rv;
}