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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "device/geolocation/network_location_provider.h" | 5 #include "device/geolocation/network_location_provider.h" |
6 | 6 |
7 #include "base/bind.h" | 7 #include "base/bind.h" |
8 #include "base/location.h" | 8 #include "base/location.h" |
9 #include "base/single_thread_task_runner.h" | 9 #include "base/single_thread_task_runner.h" |
10 #include "base/strings/utf_string_conversions.h" | 10 #include "base/strings/utf_string_conversions.h" |
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65 return nullptr; | 65 return nullptr; |
66 } | 66 } |
67 CacheMap::const_iterator iter = cache_.find(key); | 67 CacheMap::const_iterator iter = cache_.find(key); |
68 return iter == cache_.end() ? nullptr : &iter->second; | 68 return iter == cache_.end() ? nullptr : &iter->second; |
69 } | 69 } |
70 | 70 |
71 // Makes the key for the map of cached positions, using the available data. | 71 // Makes the key for the map of cached positions, using the available data. |
72 // Returns true if a good key was generated, false otherwise. | 72 // Returns true if a good key was generated, false otherwise. |
73 // | 73 // |
74 // static | 74 // static |
75 bool NetworkLocationProvider::PositionCache::MakeKey( | 75 bool NetworkLocationProvider::PositionCache::MakeKey(const WifiData& wifi_data, |
76 const WifiData& wifi_data, | 76 base::string16* key) { |
77 base::string16* key) { | |
78 // Currently we use only WiFi data and base the key only on the MAC addresses. | 77 // Currently we use only WiFi data and base the key only on the MAC addresses. |
79 DCHECK(key); | 78 DCHECK(key); |
80 key->clear(); | 79 key->clear(); |
81 const size_t kCharsPerMacAddress = 6 * 3 + 1; // e.g. "11:22:33:44:55:66|" | 80 const size_t kCharsPerMacAddress = 6 * 3 + 1; // e.g. "11:22:33:44:55:66|" |
82 key->reserve(wifi_data.access_point_data.size() * kCharsPerMacAddress); | 81 key->reserve(wifi_data.access_point_data.size() * kCharsPerMacAddress); |
83 const base::string16 separator(base::ASCIIToUTF16("|")); | 82 const base::string16 separator(base::ASCIIToUTF16("|")); |
84 for (const auto& access_point_data : wifi_data.access_point_data) { | 83 for (const auto& access_point_data : wifi_data.access_point_data) { |
85 *key += separator; | 84 *key += separator; |
86 *key += access_point_data.mac_address; | 85 *key += access_point_data.mac_address; |
87 *key += separator; | 86 *key += separator; |
88 } | 87 } |
89 // If the key is the empty string, return false, as we don't want to cache a | 88 // If the key is the empty string, return false, as we don't want to cache a |
90 // position for such data. | 89 // position for such data. |
91 return !key->empty(); | 90 return !key->empty(); |
92 } | 91 } |
93 | 92 |
94 // NetworkLocationProvider factory function | 93 // NetworkLocationProvider factory function |
95 LocationProviderBase* NewNetworkLocationProvider( | 94 LocationProviderBase* NewNetworkLocationProvider( |
96 const scoped_refptr<AccessTokenStore>& access_token_store, | 95 const scoped_refptr<AccessTokenStore>& access_token_store, |
97 const scoped_refptr<net::URLRequestContextGetter>& context, | 96 const scoped_refptr<net::URLRequestContextGetter>& context, |
98 const GURL& url, | 97 const GURL& url, |
99 const base::string16& access_token) { | 98 const base::string16& access_token) { |
100 return new NetworkLocationProvider( | 99 return new NetworkLocationProvider(access_token_store, context, url, |
101 access_token_store, context, url, access_token); | 100 access_token); |
102 } | 101 } |
103 | 102 |
104 // NetworkLocationProvider | 103 // NetworkLocationProvider |
105 NetworkLocationProvider::NetworkLocationProvider( | 104 NetworkLocationProvider::NetworkLocationProvider( |
106 const scoped_refptr<AccessTokenStore>& access_token_store, | 105 const scoped_refptr<AccessTokenStore>& access_token_store, |
107 const scoped_refptr<net::URLRequestContextGetter>& url_context_getter, | 106 const scoped_refptr<net::URLRequestContextGetter>& url_context_getter, |
108 const GURL& url, | 107 const GURL& url, |
109 const base::string16& access_token) | 108 const base::string16& access_token) |
110 : access_token_store_(access_token_store), | 109 : access_token_store_(access_token_store), |
111 wifi_data_provider_manager_(nullptr), | 110 wifi_data_provider_manager_(nullptr), |
112 wifi_data_update_callback_( | 111 wifi_data_update_callback_( |
113 base::Bind(&NetworkLocationProvider::OnWifiDataUpdate, | 112 base::Bind(&NetworkLocationProvider::OnWifiDataUpdate, |
114 base::Unretained(this))), | 113 base::Unretained(this))), |
115 is_wifi_data_complete_(false), | 114 is_wifi_data_complete_(false), |
116 access_token_(access_token), | 115 access_token_(access_token), |
117 is_permission_granted_(false), | 116 is_permission_granted_(false), |
118 is_new_data_available_(false), | 117 is_new_data_available_(false), |
119 position_cache_(new PositionCache), | 118 position_cache_(new PositionCache), |
120 weak_factory_(this) { | 119 weak_factory_(this) { |
121 request_.reset(new NetworkLocationRequest( | 120 request_.reset(new NetworkLocationRequest( |
122 url_context_getter, | 121 url_context_getter, url, |
123 url, | |
124 base::Bind(&NetworkLocationProvider::OnLocationResponse, | 122 base::Bind(&NetworkLocationProvider::OnLocationResponse, |
125 base::Unretained(this)))); | 123 base::Unretained(this)))); |
126 } | 124 } |
127 | 125 |
128 NetworkLocationProvider::~NetworkLocationProvider() { | 126 NetworkLocationProvider::~NetworkLocationProvider() { |
129 StopProvider(); | 127 StopProvider(); |
130 } | 128 } |
131 | 129 |
132 // LocationProvider implementation | 130 // LocationProvider implementation |
133 void NetworkLocationProvider::GetPosition(Geoposition* position) { | 131 void NetworkLocationProvider::GetPosition(Geoposition* position) { |
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264 << wifi_data_.access_point_data.size(); | 262 << wifi_data_.access_point_data.size(); |
265 } | 263 } |
266 request_->MakeRequest(access_token_, wifi_data_, wifi_timestamp_); | 264 request_->MakeRequest(access_token_, wifi_data_, wifi_timestamp_); |
267 } | 265 } |
268 | 266 |
269 bool NetworkLocationProvider::IsStarted() const { | 267 bool NetworkLocationProvider::IsStarted() const { |
270 return wifi_data_provider_manager_ != nullptr; | 268 return wifi_data_provider_manager_ != nullptr; |
271 } | 269 } |
272 | 270 |
273 } // namespace device | 271 } // namespace device |
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