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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_posix.h" | 5 #include "net/dns/address_sorter_posix.h" |
6 | 6 |
7 #include "base/bind.h" | 7 #include "base/bind.h" |
8 #include "base/logging.h" | 8 #include "base/logging.h" |
9 #include "net/base/net_errors.h" | 9 #include "net/base/net_errors.h" |
10 #include "net/base/net_util.h" | 10 #include "net/base/net_util.h" |
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24 IPAddressNumber ParseIP(const std::string& str) { | 24 IPAddressNumber ParseIP(const std::string& str) { |
25 IPAddressNumber addr; | 25 IPAddressNumber addr; |
26 CHECK(ParseIPLiteralToNumber(str, &addr)); | 26 CHECK(ParseIPLiteralToNumber(str, &addr)); |
27 return addr; | 27 return addr; |
28 } | 28 } |
29 | 29 |
30 // A mock socket which binds to source address according to AddressMapping. | 30 // A mock socket which binds to source address according to AddressMapping. |
31 class TestUDPClientSocket : public DatagramClientSocket { | 31 class TestUDPClientSocket : public DatagramClientSocket { |
32 public: | 32 public: |
33 explicit TestUDPClientSocket(const AddressMapping* mapping) | 33 explicit TestUDPClientSocket(const AddressMapping* mapping) |
34 : mapping_(mapping), connected_(false) {} | 34 : mapping_(mapping), connected_(false) {} |
35 | 35 |
36 virtual ~TestUDPClientSocket() {} | 36 virtual ~TestUDPClientSocket() {} |
37 | 37 |
38 virtual int Read(IOBuffer*, int, const CompletionCallback&) OVERRIDE { | 38 virtual int Read(IOBuffer*, int, const CompletionCallback&) OVERRIDE { |
39 NOTIMPLEMENTED(); | 39 NOTIMPLEMENTED(); |
40 return OK; | 40 return OK; |
41 } | 41 } |
42 virtual int Write(IOBuffer*, int, const CompletionCallback&) OVERRIDE { | 42 virtual int Write(IOBuffer*, int, const CompletionCallback&) OVERRIDE { |
43 NOTIMPLEMENTED(); | 43 NOTIMPLEMENTED(); |
44 return OK; | 44 return OK; |
45 } | 45 } |
46 virtual int SetReceiveBufferSize(int32) OVERRIDE { | 46 virtual int SetReceiveBufferSize(int32) OVERRIDE { return OK; } |
47 return OK; | 47 virtual int SetSendBufferSize(int32) OVERRIDE { return OK; } |
48 } | |
49 virtual int SetSendBufferSize(int32) OVERRIDE { | |
50 return OK; | |
51 } | |
52 | 48 |
53 virtual void Close() OVERRIDE {} | 49 virtual void Close() OVERRIDE {} |
54 virtual int GetPeerAddress(IPEndPoint* address) const OVERRIDE { | 50 virtual int GetPeerAddress(IPEndPoint* address) const OVERRIDE { |
55 NOTIMPLEMENTED(); | 51 NOTIMPLEMENTED(); |
56 return OK; | 52 return OK; |
57 } | 53 } |
58 virtual int GetLocalAddress(IPEndPoint* address) const OVERRIDE { | 54 virtual int GetLocalAddress(IPEndPoint* address) const OVERRIDE { |
59 if (!connected_) | 55 if (!connected_) |
60 return ERR_UNEXPECTED; | 56 return ERR_UNEXPECTED; |
61 *address = local_endpoint_; | 57 *address = local_endpoint_; |
62 return OK; | 58 return OK; |
63 } | 59 } |
64 | 60 |
65 virtual int Connect(const IPEndPoint& remote) OVERRIDE { | 61 virtual int Connect(const IPEndPoint& remote) OVERRIDE { |
66 if (connected_) | 62 if (connected_) |
67 return ERR_UNEXPECTED; | 63 return ERR_UNEXPECTED; |
68 AddressMapping::const_iterator it = mapping_->find(remote.address()); | 64 AddressMapping::const_iterator it = mapping_->find(remote.address()); |
69 if (it == mapping_->end()) | 65 if (it == mapping_->end()) |
70 return ERR_FAILED; | 66 return ERR_FAILED; |
71 connected_ = true; | 67 connected_ = true; |
72 local_endpoint_ = IPEndPoint(it->second, 39874 /* arbitrary port */); | 68 local_endpoint_ = IPEndPoint(it->second, 39874 /* arbitrary port */); |
73 return OK; | 69 return OK; |
74 } | 70 } |
75 | 71 |
76 virtual const BoundNetLog& NetLog() const OVERRIDE { | 72 virtual const BoundNetLog& NetLog() const OVERRIDE { return net_log_; } |
77 return net_log_; | |
78 } | |
79 | 73 |
80 private: | 74 private: |
81 BoundNetLog net_log_; | 75 BoundNetLog net_log_; |
82 const AddressMapping* mapping_; | 76 const AddressMapping* mapping_; |
83 bool connected_; | 77 bool connected_; |
84 IPEndPoint local_endpoint_; | 78 IPEndPoint local_endpoint_; |
85 | 79 |
86 DISALLOW_COPY_AND_ASSIGN(TestUDPClientSocket); | 80 DISALLOW_COPY_AND_ASSIGN(TestUDPClientSocket); |
87 }; | 81 }; |
88 | 82 |
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107 return scoped_ptr<StreamSocket>(); | 101 return scoped_ptr<StreamSocket>(); |
108 } | 102 } |
109 virtual scoped_ptr<SSLClientSocket> CreateSSLClientSocket( | 103 virtual scoped_ptr<SSLClientSocket> CreateSSLClientSocket( |
110 scoped_ptr<ClientSocketHandle>, | 104 scoped_ptr<ClientSocketHandle>, |
111 const HostPortPair&, | 105 const HostPortPair&, |
112 const SSLConfig&, | 106 const SSLConfig&, |
113 const SSLClientSocketContext&) OVERRIDE { | 107 const SSLClientSocketContext&) OVERRIDE { |
114 NOTIMPLEMENTED(); | 108 NOTIMPLEMENTED(); |
115 return scoped_ptr<SSLClientSocket>(); | 109 return scoped_ptr<SSLClientSocket>(); |
116 } | 110 } |
117 virtual void ClearSSLSessionCache() OVERRIDE { | 111 virtual void ClearSSLSessionCache() OVERRIDE { NOTIMPLEMENTED(); } |
118 NOTIMPLEMENTED(); | |
119 } | |
120 | 112 |
121 void AddMapping(const IPAddressNumber& dst, const IPAddressNumber& src) { | 113 void AddMapping(const IPAddressNumber& dst, const IPAddressNumber& src) { |
122 mapping_[dst] = src; | 114 mapping_[dst] = src; |
123 } | 115 } |
124 | 116 |
125 private: | 117 private: |
126 AddressMapping mapping_; | 118 AddressMapping mapping_; |
127 | 119 |
128 DISALLOW_COPY_AND_ASSIGN(TestSocketFactory); | 120 DISALLOW_COPY_AND_ASSIGN(TestSocketFactory); |
129 }; | 121 }; |
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161 // after sorting. | 153 // after sorting. |
162 void Verify(const char* addresses[], const int order[]) { | 154 void Verify(const char* addresses[], const int order[]) { |
163 AddressList list; | 155 AddressList list; |
164 for (const char** addr = addresses; *addr != NULL; ++addr) | 156 for (const char** addr = addresses; *addr != NULL; ++addr) |
165 list.push_back(IPEndPoint(ParseIP(*addr), 80)); | 157 list.push_back(IPEndPoint(ParseIP(*addr), 80)); |
166 for (size_t i = 0; order[i] >= 0; ++i) | 158 for (size_t i = 0; order[i] >= 0; ++i) |
167 CHECK_LT(order[i], static_cast<int>(list.size())); | 159 CHECK_LT(order[i], static_cast<int>(list.size())); |
168 | 160 |
169 AddressList result; | 161 AddressList result; |
170 TestCompletionCallback callback; | 162 TestCompletionCallback callback; |
171 sorter_.Sort(list, base::Bind(&OnSortComplete, &result, | 163 sorter_.Sort(list, |
172 callback.callback())); | 164 base::Bind(&OnSortComplete, &result, callback.callback())); |
173 callback.WaitForResult(); | 165 callback.WaitForResult(); |
174 | 166 |
175 for (size_t i = 0; (i < result.size()) || (order[i] >= 0); ++i) { | 167 for (size_t i = 0; (i < result.size()) || (order[i] >= 0); ++i) { |
176 IPEndPoint expected = order[i] >= 0 ? list[order[i]] : IPEndPoint(); | 168 IPEndPoint expected = order[i] >= 0 ? list[order[i]] : IPEndPoint(); |
177 IPEndPoint actual = i < result.size() ? result[i] : IPEndPoint(); | 169 IPEndPoint actual = i < result.size() ? result[i] : IPEndPoint(); |
178 EXPECT_TRUE(expected.address() == actual.address()) << | 170 EXPECT_TRUE(expected.address() == actual.address()) |
179 "Address out of order at position " << i << "\n" << | 171 << "Address out of order at position " << i << "\n" |
180 " Actual: " << actual.ToStringWithoutPort() << "\n" << | 172 << " Actual: " << actual.ToStringWithoutPort() << "\n" |
181 "Expected: " << expected.ToStringWithoutPort(); | 173 << "Expected: " << expected.ToStringWithoutPort(); |
182 } | 174 } |
183 } | 175 } |
184 | 176 |
185 TestSocketFactory socket_factory_; | 177 TestSocketFactory socket_factory_; |
186 AddressSorterPosix sorter_; | 178 AddressSorterPosix sorter_; |
187 }; | 179 }; |
188 | 180 |
189 // Rule 1: Avoid unusable destinations. | 181 // Rule 1: Avoid unusable destinations. |
190 TEST_F(AddressSorterPosixTest, Rule1) { | 182 TEST_F(AddressSorterPosixTest, Rule1) { |
191 AddMapping("10.0.0.231", "10.0.0.1"); | 183 AddMapping("10.0.0.231", "10.0.0.1"); |
192 const char* addresses[] = { "::1", "10.0.0.231", "127.0.0.1", NULL }; | 184 const char* addresses[] = {"::1", "10.0.0.231", "127.0.0.1", NULL}; |
193 const int order[] = { 1, -1 }; | 185 const int order[] = {1, -1}; |
194 Verify(addresses, order); | 186 Verify(addresses, order); |
195 } | 187 } |
196 | 188 |
197 // Rule 2: Prefer matching scope. | 189 // Rule 2: Prefer matching scope. |
198 TEST_F(AddressSorterPosixTest, Rule2) { | 190 TEST_F(AddressSorterPosixTest, Rule2) { |
199 AddMapping("3002::1", "4000::10"); // matching global | 191 AddMapping("3002::1", "4000::10"); // matching global |
200 AddMapping("ff32::1", "fe81::10"); // matching link-local | 192 AddMapping("ff32::1", "fe81::10"); // matching link-local |
201 AddMapping("fec1::1", "fec1::10"); // matching node-local | 193 AddMapping("fec1::1", "fec1::10"); // matching node-local |
202 AddMapping("3002::2", "::1"); // global vs. link-local | 194 AddMapping("3002::2", "::1"); // global vs. link-local |
203 AddMapping("fec1::2", "fe81::10"); // site-local vs. link-local | 195 AddMapping("fec1::2", "fe81::10"); // site-local vs. link-local |
204 AddMapping("8.0.0.1", "169.254.0.10"); // global vs. link-local | 196 AddMapping("8.0.0.1", "169.254.0.10"); // global vs. link-local |
205 // In all three cases, matching scope is preferred. | 197 // In all three cases, matching scope is preferred. |
206 const int order[] = { 1, 0, -1 }; | 198 const int order[] = {1, 0, -1}; |
207 const char* addresses1[] = { "3002::2", "3002::1", NULL }; | 199 const char* addresses1[] = {"3002::2", "3002::1", NULL}; |
208 Verify(addresses1, order); | 200 Verify(addresses1, order); |
209 const char* addresses2[] = { "fec1::2", "ff32::1", NULL }; | 201 const char* addresses2[] = {"fec1::2", "ff32::1", NULL}; |
210 Verify(addresses2, order); | 202 Verify(addresses2, order); |
211 const char* addresses3[] = { "8.0.0.1", "fec1::1", NULL }; | 203 const char* addresses3[] = {"8.0.0.1", "fec1::1", NULL}; |
212 Verify(addresses3, order); | 204 Verify(addresses3, order); |
213 } | 205 } |
214 | 206 |
215 // Rule 3: Avoid deprecated addresses. | 207 // Rule 3: Avoid deprecated addresses. |
216 TEST_F(AddressSorterPosixTest, Rule3) { | 208 TEST_F(AddressSorterPosixTest, Rule3) { |
217 // Matching scope. | 209 // Matching scope. |
218 AddMapping("3002::1", "4000::10"); | 210 AddMapping("3002::1", "4000::10"); |
219 GetSourceInfo("4000::10")->deprecated = true; | 211 GetSourceInfo("4000::10")->deprecated = true; |
220 AddMapping("3002::2", "4000::20"); | 212 AddMapping("3002::2", "4000::20"); |
221 const char* addresses[] = { "3002::1", "3002::2", NULL }; | 213 const char* addresses[] = {"3002::1", "3002::2", NULL}; |
222 const int order[] = { 1, 0, -1 }; | 214 const int order[] = {1, 0, -1}; |
223 Verify(addresses, order); | 215 Verify(addresses, order); |
224 } | 216 } |
225 | 217 |
226 // Rule 4: Prefer home addresses. | 218 // Rule 4: Prefer home addresses. |
227 TEST_F(AddressSorterPosixTest, Rule4) { | 219 TEST_F(AddressSorterPosixTest, Rule4) { |
228 AddMapping("3002::1", "4000::10"); | 220 AddMapping("3002::1", "4000::10"); |
229 AddMapping("3002::2", "4000::20"); | 221 AddMapping("3002::2", "4000::20"); |
230 GetSourceInfo("4000::20")->home = true; | 222 GetSourceInfo("4000::20")->home = true; |
231 const char* addresses[] = { "3002::1", "3002::2", NULL }; | 223 const char* addresses[] = {"3002::1", "3002::2", NULL}; |
232 const int order[] = { 1, 0, -1 }; | 224 const int order[] = {1, 0, -1}; |
233 Verify(addresses, order); | 225 Verify(addresses, order); |
234 } | 226 } |
235 | 227 |
236 // Rule 5: Prefer matching label. | 228 // Rule 5: Prefer matching label. |
237 TEST_F(AddressSorterPosixTest, Rule5) { | 229 TEST_F(AddressSorterPosixTest, Rule5) { |
238 AddMapping("::1", "::1"); // matching loopback | 230 AddMapping("::1", "::1"); // matching loopback |
239 AddMapping("::ffff:1234:1", "::ffff:1234:10"); // matching IPv4-mapped | 231 AddMapping("::ffff:1234:1", "::ffff:1234:10"); // matching IPv4-mapped |
240 AddMapping("2001::1", "::ffff:1234:10"); // Teredo vs. IPv4-mapped | 232 AddMapping("2001::1", "::ffff:1234:10"); // Teredo vs. IPv4-mapped |
241 AddMapping("2002::1", "2001::10"); // 6to4 vs. Teredo | 233 AddMapping("2002::1", "2001::10"); // 6to4 vs. Teredo |
242 const int order[] = { 1, 0, -1 }; | 234 const int order[] = {1, 0, -1}; |
243 { | 235 { |
244 const char* addresses[] = { "2001::1", "::1", NULL }; | 236 const char* addresses[] = {"2001::1", "::1", NULL}; |
245 Verify(addresses, order); | 237 Verify(addresses, order); |
246 } | 238 } |
247 { | 239 { |
248 const char* addresses[] = { "2002::1", "::ffff:1234:1", NULL }; | 240 const char* addresses[] = {"2002::1", "::ffff:1234:1", NULL}; |
249 Verify(addresses, order); | 241 Verify(addresses, order); |
250 } | 242 } |
251 } | 243 } |
252 | 244 |
253 // Rule 6: Prefer higher precedence. | 245 // Rule 6: Prefer higher precedence. |
254 TEST_F(AddressSorterPosixTest, Rule6) { | 246 TEST_F(AddressSorterPosixTest, Rule6) { |
255 AddMapping("::1", "::1"); // loopback | 247 AddMapping("::1", "::1"); // loopback |
256 AddMapping("ff32::1", "fe81::10"); // multicast | 248 AddMapping("ff32::1", "fe81::10"); // multicast |
257 AddMapping("::ffff:1234:1", "::ffff:1234:10"); // IPv4-mapped | 249 AddMapping("::ffff:1234:1", "::ffff:1234:10"); // IPv4-mapped |
258 AddMapping("2001::1", "2001::10"); // Teredo | 250 AddMapping("2001::1", "2001::10"); // Teredo |
259 const char* addresses[] = { "2001::1", "::ffff:1234:1", "ff32::1", "::1", | 251 const char* addresses[] = {"2001::1", "::ffff:1234:1", "ff32::1", "::1", |
260 NULL }; | 252 NULL}; |
261 const int order[] = { 3, 2, 1, 0, -1 }; | 253 const int order[] = {3, 2, 1, 0, -1}; |
262 Verify(addresses, order); | 254 Verify(addresses, order); |
263 } | 255 } |
264 | 256 |
265 // Rule 7: Prefer native transport. | 257 // Rule 7: Prefer native transport. |
266 TEST_F(AddressSorterPosixTest, Rule7) { | 258 TEST_F(AddressSorterPosixTest, Rule7) { |
267 AddMapping("3002::1", "4000::10"); | 259 AddMapping("3002::1", "4000::10"); |
268 AddMapping("3002::2", "4000::20"); | 260 AddMapping("3002::2", "4000::20"); |
269 GetSourceInfo("4000::20")->native = true; | 261 GetSourceInfo("4000::20")->native = true; |
270 const char* addresses[] = { "3002::1", "3002::2", NULL }; | 262 const char* addresses[] = {"3002::1", "3002::2", NULL}; |
271 const int order[] = { 1, 0, -1 }; | 263 const int order[] = {1, 0, -1}; |
272 Verify(addresses, order); | 264 Verify(addresses, order); |
273 } | 265 } |
274 | 266 |
275 // Rule 8: Prefer smaller scope. | 267 // Rule 8: Prefer smaller scope. |
276 TEST_F(AddressSorterPosixTest, Rule8) { | 268 TEST_F(AddressSorterPosixTest, Rule8) { |
277 // Matching scope. Should precede the others by Rule 2. | 269 // Matching scope. Should precede the others by Rule 2. |
278 AddMapping("fe81::1", "fe81::10"); // link-local | 270 AddMapping("fe81::1", "fe81::10"); // link-local |
279 AddMapping("3000::1", "4000::10"); // global | 271 AddMapping("3000::1", "4000::10"); // global |
280 // Mismatched scope. | 272 // Mismatched scope. |
281 AddMapping("ff32::1", "4000::10"); // link-local | 273 AddMapping("ff32::1", "4000::10"); // link-local |
282 AddMapping("ff35::1", "4000::10"); // site-local | 274 AddMapping("ff35::1", "4000::10"); // site-local |
283 AddMapping("ff38::1", "4000::10"); // org-local | 275 AddMapping("ff38::1", "4000::10"); // org-local |
284 const char* addresses[] = { "ff38::1", "3000::1", "ff35::1", "ff32::1", | 276 const char* addresses[] = {"ff38::1", "3000::1", "ff35::1", |
285 "fe81::1", NULL }; | 277 "ff32::1", "fe81::1", NULL}; |
286 const int order[] = { 4, 1, 3, 2, 0, -1 }; | 278 const int order[] = {4, 1, 3, 2, 0, -1}; |
287 Verify(addresses, order); | 279 Verify(addresses, order); |
288 } | 280 } |
289 | 281 |
290 // Rule 9: Use longest matching prefix. | 282 // Rule 9: Use longest matching prefix. |
291 TEST_F(AddressSorterPosixTest, Rule9) { | 283 TEST_F(AddressSorterPosixTest, Rule9) { |
292 AddMapping("3000::1", "3000:ffff::10"); // 16 bit match | 284 AddMapping("3000::1", "3000:ffff::10"); // 16 bit match |
293 GetSourceInfo("3000:ffff::10")->prefix_length = 16; | 285 GetSourceInfo("3000:ffff::10")->prefix_length = 16; |
294 AddMapping("4000::1", "4000::10"); // 123 bit match, limited to 15 | 286 AddMapping("4000::1", "4000::10"); // 123 bit match, limited to 15 |
295 GetSourceInfo("4000::10")->prefix_length = 15; | 287 GetSourceInfo("4000::10")->prefix_length = 15; |
296 AddMapping("4002::1", "4000::10"); // 14 bit match | 288 AddMapping("4002::1", "4000::10"); // 14 bit match |
297 AddMapping("4080::1", "4000::10"); // 8 bit match | 289 AddMapping("4080::1", "4000::10"); // 8 bit match |
298 const char* addresses[] = { "4080::1", "4002::1", "4000::1", "3000::1", | 290 const char* addresses[] = {"4080::1", "4002::1", "4000::1", "3000::1", NULL}; |
299 NULL }; | 291 const int order[] = {3, 2, 1, 0, -1}; |
300 const int order[] = { 3, 2, 1, 0, -1 }; | |
301 Verify(addresses, order); | 292 Verify(addresses, order); |
302 } | 293 } |
303 | 294 |
304 // Rule 10: Leave the order unchanged. | 295 // Rule 10: Leave the order unchanged. |
305 TEST_F(AddressSorterPosixTest, Rule10) { | 296 TEST_F(AddressSorterPosixTest, Rule10) { |
306 AddMapping("4000::1", "4000::10"); | 297 AddMapping("4000::1", "4000::10"); |
307 AddMapping("4000::2", "4000::10"); | 298 AddMapping("4000::2", "4000::10"); |
308 AddMapping("4000::3", "4000::10"); | 299 AddMapping("4000::3", "4000::10"); |
309 const char* addresses[] = { "4000::1", "4000::2", "4000::3", NULL }; | 300 const char* addresses[] = {"4000::1", "4000::2", "4000::3", NULL}; |
310 const int order[] = { 0, 1, 2, -1 }; | 301 const int order[] = {0, 1, 2, -1}; |
311 Verify(addresses, order); | 302 Verify(addresses, order); |
312 } | 303 } |
313 | 304 |
314 TEST_F(AddressSorterPosixTest, MultipleRules) { | 305 TEST_F(AddressSorterPosixTest, MultipleRules) { |
315 AddMapping("::1", "::1"); // loopback | 306 AddMapping("::1", "::1"); // loopback |
316 AddMapping("ff32::1", "fe81::10"); // link-local multicast | 307 AddMapping("ff32::1", "fe81::10"); // link-local multicast |
317 AddMapping("ff3e::1", "4000::10"); // global multicast | 308 AddMapping("ff3e::1", "4000::10"); // global multicast |
318 AddMapping("4000::1", "4000::10"); // global unicast | 309 AddMapping("4000::1", "4000::10"); // global unicast |
319 AddMapping("ff32::2", "fe81::20"); // deprecated link-local multicast | 310 AddMapping("ff32::2", "fe81::20"); // deprecated link-local multicast |
320 GetSourceInfo("fe81::20")->deprecated = true; | 311 GetSourceInfo("fe81::20")->deprecated = true; |
321 const char* addresses[] = { "ff3e::1", "ff32::2", "4000::1", "ff32::1", "::1", | 312 const char* addresses[] = {"ff3e::1", "ff32::2", "4000::1", "ff32::1", |
322 "8.0.0.1", NULL }; | 313 "::1", "8.0.0.1", NULL}; |
323 const int order[] = { 4, 3, 0, 2, 1, -1 }; | 314 const int order[] = {4, 3, 0, 2, 1, -1}; |
324 Verify(addresses, order); | 315 Verify(addresses, order); |
325 } | 316 } |
326 | 317 |
327 } // namespace net | 318 } // namespace net |
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