Update To 11.40.268.0
[platform/framework/web/crosswalk.git] / src / net / dns / address_sorter_posix_unittest.cc
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
3 // found in the LICENSE file.
4
5 #include "net/dns/address_sorter_posix.h"
6
7 #include "base/bind.h"
8 #include "base/logging.h"
9 #include "net/base/net_errors.h"
10 #include "net/base/net_util.h"
11 #include "net/base/test_completion_callback.h"
12 #include "net/socket/client_socket_factory.h"
13 #include "net/socket/ssl_client_socket.h"
14 #include "net/socket/stream_socket.h"
15 #include "net/udp/datagram_client_socket.h"
16 #include "testing/gtest/include/gtest/gtest.h"
17
18 namespace net {
19 namespace {
20
21 // Used to map destination address to source address.
22 typedef std::map<IPAddressNumber, IPAddressNumber> AddressMapping;
23
24 IPAddressNumber ParseIP(const std::string& str) {
25   IPAddressNumber addr;
26   CHECK(ParseIPLiteralToNumber(str, &addr));
27   return addr;
28 }
29
30 // A mock socket which binds to source address according to AddressMapping.
31 class TestUDPClientSocket : public DatagramClientSocket {
32  public:
33   explicit TestUDPClientSocket(const AddressMapping* mapping)
34       : mapping_(mapping), connected_(false)  {}
35
36   ~TestUDPClientSocket() override {}
37
38   int Read(IOBuffer*, int, const CompletionCallback&) override {
39     NOTIMPLEMENTED();
40     return OK;
41   }
42   int Write(IOBuffer*, int, const CompletionCallback&) override {
43     NOTIMPLEMENTED();
44     return OK;
45   }
46   int SetReceiveBufferSize(int32) override { return OK; }
47   int SetSendBufferSize(int32) override { return OK; }
48
49   void Close() override {}
50   int GetPeerAddress(IPEndPoint* address) const override {
51     NOTIMPLEMENTED();
52     return OK;
53   }
54   int GetLocalAddress(IPEndPoint* address) const override {
55     if (!connected_)
56       return ERR_UNEXPECTED;
57     *address = local_endpoint_;
58     return OK;
59   }
60
61   int Connect(const IPEndPoint& remote) override {
62     if (connected_)
63       return ERR_UNEXPECTED;
64     AddressMapping::const_iterator it = mapping_->find(remote.address());
65     if (it == mapping_->end())
66       return ERR_FAILED;
67     connected_ = true;
68     local_endpoint_ = IPEndPoint(it->second, 39874 /* arbitrary port */);
69     return OK;
70   }
71
72   const BoundNetLog& NetLog() const override { return net_log_; }
73
74  private:
75   BoundNetLog net_log_;
76   const AddressMapping* mapping_;
77   bool connected_;
78   IPEndPoint local_endpoint_;
79
80   DISALLOW_COPY_AND_ASSIGN(TestUDPClientSocket);
81 };
82
83 // Creates TestUDPClientSockets and maintains an AddressMapping.
84 class TestSocketFactory : public ClientSocketFactory {
85  public:
86   TestSocketFactory() {}
87   ~TestSocketFactory() override {}
88
89   scoped_ptr<DatagramClientSocket> CreateDatagramClientSocket(
90       DatagramSocket::BindType,
91       const RandIntCallback&,
92       NetLog*,
93       const NetLog::Source&) override {
94     return scoped_ptr<DatagramClientSocket>(new TestUDPClientSocket(&mapping_));
95   }
96   scoped_ptr<StreamSocket> CreateTransportClientSocket(
97       const AddressList&,
98       NetLog*,
99       const NetLog::Source&) override {
100     NOTIMPLEMENTED();
101     return scoped_ptr<StreamSocket>();
102   }
103   scoped_ptr<SSLClientSocket> CreateSSLClientSocket(
104       scoped_ptr<ClientSocketHandle>,
105       const HostPortPair&,
106       const SSLConfig&,
107       const SSLClientSocketContext&) override {
108     NOTIMPLEMENTED();
109     return scoped_ptr<SSLClientSocket>();
110   }
111   void ClearSSLSessionCache() override { NOTIMPLEMENTED(); }
112
113   void AddMapping(const IPAddressNumber& dst, const IPAddressNumber& src) {
114     mapping_[dst] = src;
115   }
116
117  private:
118   AddressMapping mapping_;
119
120   DISALLOW_COPY_AND_ASSIGN(TestSocketFactory);
121 };
122
123 void OnSortComplete(AddressList* result_buf,
124                     const CompletionCallback& callback,
125                     bool success,
126                     const AddressList& result) {
127   EXPECT_TRUE(success);
128   if (success)
129     *result_buf = result;
130   callback.Run(OK);
131 }
132
133 }  // namespace
134
135 class AddressSorterPosixTest : public testing::Test {
136  protected:
137   AddressSorterPosixTest() : sorter_(&socket_factory_) {}
138
139   void AddMapping(const std::string& dst, const std::string& src) {
140     socket_factory_.AddMapping(ParseIP(dst), ParseIP(src));
141   }
142
143   AddressSorterPosix::SourceAddressInfo* GetSourceInfo(
144       const std::string& addr) {
145     IPAddressNumber address = ParseIP(addr);
146     AddressSorterPosix::SourceAddressInfo* info = &sorter_.source_map_[address];
147     if (info->scope == AddressSorterPosix::SCOPE_UNDEFINED)
148       sorter_.FillPolicy(address, info);
149     return info;
150   }
151
152   // Verify that NULL-terminated |addresses| matches (-1)-terminated |order|
153   // after sorting.
154   void Verify(const char* addresses[], const int order[]) {
155     AddressList list;
156     for (const char** addr = addresses; *addr != NULL; ++addr)
157       list.push_back(IPEndPoint(ParseIP(*addr), 80));
158     for (size_t i = 0; order[i] >= 0; ++i)
159       CHECK_LT(order[i], static_cast<int>(list.size()));
160
161     AddressList result;
162     TestCompletionCallback callback;
163     sorter_.Sort(list, base::Bind(&OnSortComplete, &result,
164                                   callback.callback()));
165     callback.WaitForResult();
166
167     for (size_t i = 0; (i < result.size()) || (order[i] >= 0); ++i) {
168       IPEndPoint expected = order[i] >= 0 ? list[order[i]] : IPEndPoint();
169       IPEndPoint actual = i < result.size() ? result[i] : IPEndPoint();
170       EXPECT_TRUE(expected.address() == actual.address()) <<
171           "Address out of order at position " << i << "\n" <<
172           "  Actual: " << actual.ToStringWithoutPort() << "\n" <<
173           "Expected: " << expected.ToStringWithoutPort();
174     }
175   }
176
177   TestSocketFactory socket_factory_;
178   AddressSorterPosix sorter_;
179 };
180
181 // Rule 1: Avoid unusable destinations.
182 TEST_F(AddressSorterPosixTest, Rule1) {
183   AddMapping("10.0.0.231", "10.0.0.1");
184   const char* addresses[] = { "::1", "10.0.0.231", "127.0.0.1", NULL };
185   const int order[] = { 1, -1 };
186   Verify(addresses, order);
187 }
188
189 // Rule 2: Prefer matching scope.
190 TEST_F(AddressSorterPosixTest, Rule2) {
191   AddMapping("3002::1", "4000::10");      // matching global
192   AddMapping("ff32::1", "fe81::10");      // matching link-local
193   AddMapping("fec1::1", "fec1::10");      // matching node-local
194   AddMapping("3002::2", "::1");           // global vs. link-local
195   AddMapping("fec1::2", "fe81::10");      // site-local vs. link-local
196   AddMapping("8.0.0.1", "169.254.0.10");  // global vs. link-local
197   // In all three cases, matching scope is preferred.
198   const int order[] = { 1, 0, -1 };
199   const char* addresses1[] = { "3002::2", "3002::1", NULL };
200   Verify(addresses1, order);
201   const char* addresses2[] = { "fec1::2", "ff32::1", NULL };
202   Verify(addresses2, order);
203   const char* addresses3[] = { "8.0.0.1", "fec1::1", NULL };
204   Verify(addresses3, order);
205 }
206
207 // Rule 3: Avoid deprecated addresses.
208 TEST_F(AddressSorterPosixTest, Rule3) {
209   // Matching scope.
210   AddMapping("3002::1", "4000::10");
211   GetSourceInfo("4000::10")->deprecated = true;
212   AddMapping("3002::2", "4000::20");
213   const char* addresses[] = { "3002::1", "3002::2", NULL };
214   const int order[] = { 1, 0, -1 };
215   Verify(addresses, order);
216 }
217
218 // Rule 4: Prefer home addresses.
219 TEST_F(AddressSorterPosixTest, Rule4) {
220   AddMapping("3002::1", "4000::10");
221   AddMapping("3002::2", "4000::20");
222   GetSourceInfo("4000::20")->home = true;
223   const char* addresses[] = { "3002::1", "3002::2", NULL };
224   const int order[] = { 1, 0, -1 };
225   Verify(addresses, order);
226 }
227
228 // Rule 5: Prefer matching label.
229 TEST_F(AddressSorterPosixTest, Rule5) {
230   AddMapping("::1", "::1");                       // matching loopback
231   AddMapping("::ffff:1234:1", "::ffff:1234:10");  // matching IPv4-mapped
232   AddMapping("2001::1", "::ffff:1234:10");        // Teredo vs. IPv4-mapped
233   AddMapping("2002::1", "2001::10");              // 6to4 vs. Teredo
234   const int order[] = { 1, 0, -1 };
235   {
236     const char* addresses[] = { "2001::1", "::1", NULL };
237     Verify(addresses, order);
238   }
239   {
240     const char* addresses[] = { "2002::1", "::ffff:1234:1", NULL };
241     Verify(addresses, order);
242   }
243 }
244
245 // Rule 6: Prefer higher precedence.
246 TEST_F(AddressSorterPosixTest, Rule6) {
247   AddMapping("::1", "::1");                       // loopback
248   AddMapping("ff32::1", "fe81::10");              // multicast
249   AddMapping("::ffff:1234:1", "::ffff:1234:10");  // IPv4-mapped
250   AddMapping("2001::1", "2001::10");              // Teredo
251   const char* addresses[] = { "2001::1", "::ffff:1234:1", "ff32::1", "::1",
252                               NULL };
253   const int order[] = { 3, 2, 1, 0, -1 };
254   Verify(addresses, order);
255 }
256
257 // Rule 7: Prefer native transport.
258 TEST_F(AddressSorterPosixTest, Rule7) {
259   AddMapping("3002::1", "4000::10");
260   AddMapping("3002::2", "4000::20");
261   GetSourceInfo("4000::20")->native = true;
262   const char* addresses[] = { "3002::1", "3002::2", NULL };
263   const int order[] = { 1, 0, -1 };
264   Verify(addresses, order);
265 }
266
267 // Rule 8: Prefer smaller scope.
268 TEST_F(AddressSorterPosixTest, Rule8) {
269   // Matching scope. Should precede the others by Rule 2.
270   AddMapping("fe81::1", "fe81::10");  // link-local
271   AddMapping("3000::1", "4000::10");  // global
272   // Mismatched scope.
273   AddMapping("ff32::1", "4000::10");  // link-local
274   AddMapping("ff35::1", "4000::10");  // site-local
275   AddMapping("ff38::1", "4000::10");  // org-local
276   const char* addresses[] = { "ff38::1", "3000::1", "ff35::1", "ff32::1",
277                               "fe81::1", NULL };
278   const int order[] = { 4, 1, 3, 2, 0, -1 };
279   Verify(addresses, order);
280 }
281
282 // Rule 9: Use longest matching prefix.
283 TEST_F(AddressSorterPosixTest, Rule9) {
284   AddMapping("3000::1", "3000:ffff::10");  // 16 bit match
285   GetSourceInfo("3000:ffff::10")->prefix_length = 16;
286   AddMapping("4000::1", "4000::10");       // 123 bit match, limited to 15
287   GetSourceInfo("4000::10")->prefix_length = 15;
288   AddMapping("4002::1", "4000::10");       // 14 bit match
289   AddMapping("4080::1", "4000::10");       // 8 bit match
290   const char* addresses[] = { "4080::1", "4002::1", "4000::1", "3000::1",
291                               NULL };
292   const int order[] = { 3, 2, 1, 0, -1 };
293   Verify(addresses, order);
294 }
295
296 // Rule 10: Leave the order unchanged.
297 TEST_F(AddressSorterPosixTest, Rule10) {
298   AddMapping("4000::1", "4000::10");
299   AddMapping("4000::2", "4000::10");
300   AddMapping("4000::3", "4000::10");
301   const char* addresses[] = { "4000::1", "4000::2", "4000::3", NULL };
302   const int order[] = { 0, 1, 2, -1 };
303   Verify(addresses, order);
304 }
305
306 TEST_F(AddressSorterPosixTest, MultipleRules) {
307   AddMapping("::1", "::1");           // loopback
308   AddMapping("ff32::1", "fe81::10");  // link-local multicast
309   AddMapping("ff3e::1", "4000::10");  // global multicast
310   AddMapping("4000::1", "4000::10");  // global unicast
311   AddMapping("ff32::2", "fe81::20");  // deprecated link-local multicast
312   GetSourceInfo("fe81::20")->deprecated = true;
313   const char* addresses[] = { "ff3e::1", "ff32::2", "4000::1", "ff32::1", "::1",
314                               "8.0.0.1", NULL };
315   const int order[] = { 4, 3, 0, 2, 1, -1 };
316   Verify(addresses, order);
317 }
318
319 }  // namespace net