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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 "net/dns/address_sorter.h" | 5 #include "net/dns/address_sorter.h" |
6 | 6 |
7 #include <winsock2.h> | 7 #include <winsock2.h> |
8 | 8 |
9 #include <algorithm> | 9 #include <algorithm> |
10 | 10 |
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133 std::unique_ptr<SOCKET_ADDRESS_LIST, base::FreeDeleter> input_buffer_; | 133 std::unique_ptr<SOCKET_ADDRESS_LIST, base::FreeDeleter> input_buffer_; |
134 std::unique_ptr<SOCKET_ADDRESS_LIST, base::FreeDeleter> output_buffer_; | 134 std::unique_ptr<SOCKET_ADDRESS_LIST, base::FreeDeleter> output_buffer_; |
135 bool success_; | 135 bool success_; |
136 | 136 |
137 DISALLOW_COPY_AND_ASSIGN(Job); | 137 DISALLOW_COPY_AND_ASSIGN(Job); |
138 }; | 138 }; |
139 | 139 |
140 DISALLOW_COPY_AND_ASSIGN(AddressSorterWin); | 140 DISALLOW_COPY_AND_ASSIGN(AddressSorterWin); |
141 }; | 141 }; |
142 | 142 |
143 // Merges |list_ipv4| and |list_ipv6| before passing it to |callback|, but | |
144 // only if |success| is true. | |
145 void MergeResults(const AddressSorter::CallbackType& callback, | |
146 const AddressList& list_ipv4, | |
147 bool success, | |
148 const AddressList& list_ipv6) { | |
149 if (!success) { | |
150 callback.Run(false, AddressList()); | |
151 return; | |
152 } | |
153 AddressList list; | |
154 list.insert(list.end(), list_ipv6.begin(), list_ipv6.end()); | |
155 list.insert(list.end(), list_ipv4.begin(), list_ipv4.end()); | |
156 callback.Run(true, list); | |
157 } | |
158 | |
159 // Wrapper for AddressSorterWin which does not sort IPv4 or IPv4-mapped | |
160 // addresses but always puts them at the end of the list. Needed because the | |
161 // SIO_ADDRESS_LIST_SORT does not support IPv4 addresses on Windows XP. | |
162 class AddressSorterWinXP : public AddressSorter { | |
163 public: | |
164 AddressSorterWinXP() {} | |
165 ~AddressSorterWinXP() override {} | |
166 | |
167 // AddressSorter: | |
168 void Sort(const AddressList& list, | |
169 const CallbackType& callback) const override { | |
170 AddressList list_ipv4; | |
171 AddressList list_ipv6; | |
172 for (size_t i = 0; i < list.size(); ++i) { | |
173 const IPEndPoint& ipe = list[i]; | |
174 if (ipe.GetFamily() == ADDRESS_FAMILY_IPV4) { | |
175 list_ipv4.push_back(ipe); | |
176 } else { | |
177 list_ipv6.push_back(ipe); | |
178 } | |
179 } | |
180 if (!list_ipv6.empty()) { | |
181 sorter_.Sort(list_ipv6, base::Bind(&MergeResults, callback, list_ipv4)); | |
182 } else { | |
183 NOTREACHED() << "Should not be called with IPv4-only addresses."; | |
184 callback.Run(true, list); | |
185 } | |
186 } | |
187 | |
188 private: | |
189 AddressSorterWin sorter_; | |
190 | |
191 DISALLOW_COPY_AND_ASSIGN(AddressSorterWinXP); | |
192 }; | |
193 | |
194 } // namespace | 143 } // namespace |
195 | 144 |
196 // static | 145 // static |
197 std::unique_ptr<AddressSorter> AddressSorter::CreateAddressSorter() { | 146 std::unique_ptr<AddressSorter> AddressSorter::CreateAddressSorter() { |
198 if (base::win::GetVersion() < base::win::VERSION_VISTA) | |
199 return std::unique_ptr<AddressSorter>(new AddressSorterWinXP()); | |
200 return std::unique_ptr<AddressSorter>(new AddressSorterWin()); | 147 return std::unique_ptr<AddressSorter>(new AddressSorterWin()); |
201 } | 148 } |
202 | 149 |
203 } // namespace net | 150 } // namespace net |
204 | 151 |
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