Revert 37009 - Adding geolocation data provider infrastructure to Chrome....

chrome/browser/geolocation/wifi_data_provider_osx.cc

Index: chrome/browser/geolocation/wifi_data_provider_osx.cc
===================================================================
--- chrome/browser/geolocation/wifi_data_provider_osx.cc	(revision 37014)
+++ chrome/browser/geolocation/wifi_data_provider_osx.cc	(working copy)
@@ -1,168 +0,0 @@
-// Copyright 2008, Google Inc.
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are met:
-//
-//  1. Redistributions of source code must retain the above copyright notice,
-//     this list of conditions and the following disclaimer.
-//  2. Redistributions in binary form must reproduce the above copyright notice,
-//     this list of conditions and the following disclaimer in the documentation
-//     and/or other materials provided with the distribution.
-//  3. Neither the name of Google Inc. nor the names of its contributors may be
-//     used to endorse or promote products derived from this software without
-//     specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
-// WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
-// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
-// EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
-// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
-// OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
-// WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
-// OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
-// ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// We use the OSX system API function WirelessScanSplit. This function is not
-// documented or included in the SDK, so we use a reverse-engineered header,
-// osx_wifi_.h. This file is taken from the iStumbler project
-// (http://www.istumbler.net).
-
-// TODO(cprince): remove platform-specific #ifdef guards when OS-specific
-// sources (e.g. WIN32_CPPSRCS) are implemented
-#ifdef OS_MACOSX
-
-#include "gears/geolocation/wifi_data_provider_osx.h"
-
-#include <dlfcn.h>
-#include <stdio.h>
-#include "gears/base/common/string_utils.h"
-#include "gears/geolocation/wifi_data_provider_common.h"
-
-// The time periods, in milliseconds, between successive polls of the wifi data.
-extern const int kDefaultPollingInterval = 120000;  // 2 mins
-extern const int kNoChangePollingInterval = 300000;  // 5 mins
-extern const int kTwoNoChangePollingInterval = 600000;  // 10 mins
-
-// static
-template<>
-WifiDataProviderImplBase *WifiDataProvider::DefaultFactoryFunction() {
-  return new OsxWifiDataProvider();
-}
-
-
-OsxWifiDataProvider::OsxWifiDataProvider() : is_first_scan_complete_(false) {
-  Start();
-}
-
-OsxWifiDataProvider::~OsxWifiDataProvider() {
-  stop_event_.Signal();
-  Join();
-}
-
-bool OsxWifiDataProvider::GetData(WifiData *data) {
-  assert(data);
-  MutexLock lock(&data_mutex_);
-  *data = wifi_data_;
-  // If we've successfully completed a scan, indicate that we have all of the
-  // data we can get.
-  return is_first_scan_complete_;
-}
-
-// Thread implementation
-void OsxWifiDataProvider::Run() {
-  void *apple_80211_library = dlopen(
-      "/System/Library/PrivateFrameworks/Apple80211.framework/Apple80211",
-      RTLD_LAZY);
-  if (!apple_80211_library) {
-    is_first_scan_complete_ = true;
-    return;
-  }
-
-  WirelessAttach_function_ = reinterpret_cast<WirelessAttachFunction>(
-      dlsym(apple_80211_library, "WirelessAttach"));
-  WirelessScanSplit_function_ = reinterpret_cast<WirelessScanSplitFunction>(
-      dlsym(apple_80211_library, "WirelessScanSplit"));
-  WirelessDetach_function_ = reinterpret_cast<WirelessDetachFunction>(
-      dlsym(apple_80211_library, "WirelessDetach"));
-  assert(WirelessAttach_function_ &&
-         WirelessScanSplit_function_ &&
-         WirelessDetach_function_);
-    
-  if ((*WirelessAttach_function_)(&wifi_context_, 0) != noErr) {
-    is_first_scan_complete_ = true;
-    return;
-  }
-
-  // Regularly get the access point data.
-  int polling_interval = kDefaultPollingInterval;
-  do {
-    WifiData new_data;
-    GetAccessPointData(&new_data.access_point_data);
-    bool update_available;
-    data_mutex_.Lock();
-    update_available = wifi_data_.DiffersSignificantly(new_data);
-    wifi_data_ = new_data;
-    data_mutex_.Unlock();
-    polling_interval =
-        UpdatePollingInterval(polling_interval, update_available);
-    if (update_available) {
-      is_first_scan_complete_ = true;
-      NotifyListeners();
-    }
-  } while (!stop_event_.WaitWithTimeout(polling_interval));
-
-  (*WirelessDetach_function_)(wifi_context_);
-
-  dlclose(apple_80211_library);
-}
-
-void OsxWifiDataProvider::GetAccessPointData(
-    WifiData::AccessPointDataSet *access_points) {
-  assert(access_points);
-  assert(WirelessScanSplit_function_);
-  CFArrayRef managed_access_points = NULL;
-  CFArrayRef adhoc_access_points = NULL;
-  if ((*WirelessScanSplit_function_)(wifi_context_,
-                                     &managed_access_points,
-                                     &adhoc_access_points,
-                                     0) != noErr) {
-    return;
-  }
-  
-  if (managed_access_points == NULL) {
-    return;
-  }
-
-  int num_access_points = CFArrayGetCount(managed_access_points);
-  for (int i = 0; i < num_access_points; ++i) {
-    const WirelessNetworkInfo *access_point_info =
-        reinterpret_cast<const WirelessNetworkInfo*>(
-        CFDataGetBytePtr(
-        reinterpret_cast<const CFDataRef>(
-        CFArrayGetValueAtIndex(managed_access_points, i))));
-        
-    // Currently we get only MAC address, signal strength, channel
-    // signal-to-noise and SSID
-    // TODO(steveblock): Work out how to get age.
-    AccessPointData access_point_data;
-    access_point_data.mac_address =
-        MacAddressAsString16(access_point_info->macAddress);
-    // WirelessNetworkInfo::signal appears to be signal strength in dBm.
-    access_point_data.radio_signal_strength = access_point_info->signal;
-    access_point_data.channel = access_point_info->channel;
-    // WirelessNetworkInfo::noise appears to be noise floor in dBm.
-    access_point_data.signal_to_noise = access_point_info->signal -
-                                        access_point_info->noise;
-    std::string16 ssid;
-    if (UTF8ToString16(reinterpret_cast<const char*>(access_point_info->name),
-                       access_point_info->nameLen,
-                       &ssid)) {
-      access_point_data.ssid = ssid;
-    }
-
-    access_points->insert(access_point_data);
-  }
-}
-
-#endif  // OS_MACOSX