| // Copyright (c) 2011 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "net/base/dnsrr_resolver.h" |
| |
| #include "base/bind.h" |
| #include "base/callback.h" |
| #include "base/synchronization/lock.h" |
| #include "net/base/dns_util.h" |
| #include "net/base/net_errors.h" |
| #include "net/base/net_log.h" |
| #include "net/base/test_completion_callback.h" |
| #include "testing/gtest/include/gtest/gtest.h" |
| |
| namespace net { |
| |
| namespace { |
| |
| void FailTest(int /* result */) { |
| FAIL(); |
| } |
| |
| // These tests are disabled because they depend on the external network to |
| // pass. However, they may be useful when chaging the code. |
| TEST(DnsRRResolverTest, DISABLED_ResolveReal) { |
| RRResponse response; |
| TestCompletionCallback callback; |
| DnsRRResolver resolver; |
| DnsRRResolver::Handle handle; |
| |
| handle = resolver.Resolve("test.imperialviolet.org", 13172, 0, |
| callback.callback(), &response, 0, BoundNetLog()); |
| ASSERT_TRUE(handle != DnsRRResolver::kInvalidHandle); |
| ASSERT_EQ(OK, callback.WaitForResult()); |
| ASSERT_EQ(1u, response.rrdatas.size()); |
| LOG(ERROR) << "result length " << response.rrdatas[0].size(); |
| LOG(ERROR) << "result is " << response.rrdatas[0]; |
| } |
| |
| TEST(DnsRRResolverTest, DISABLED_ResolveReal2) { |
| RRResponse response; |
| TestCompletionCallback callback; |
| DnsRRResolver resolver; |
| DnsRRResolver::Handle handle; |
| |
| handle = resolver.Resolve("google.com", kDNS_TXT, 0, |
| callback.callback(), &response, 0, BoundNetLog()); |
| ASSERT_TRUE(handle != DnsRRResolver::kInvalidHandle); |
| ASSERT_EQ(OK, callback.WaitForResult()); |
| ASSERT_EQ(1u, response.rrdatas.size()); |
| LOG(ERROR) << "result length " << response.rrdatas[0].size(); |
| LOG(ERROR) << "result is " << response.rrdatas[0]; |
| } |
| |
| |
| TEST(DnsRRResolverTest, Resolve) { |
| RRResponse response; |
| TestCompletionCallback callback; |
| DnsRRResolver resolver; |
| DnsRRResolver::Handle handle; |
| |
| handle = resolver.Resolve("www.testing.notatld", kDNS_TESTING, 0, |
| callback.callback(), &response, 0, BoundNetLog()); |
| ASSERT_TRUE(handle != DnsRRResolver::kInvalidHandle); |
| ASSERT_EQ(OK, callback.WaitForResult()); |
| ASSERT_EQ(1u, response.rrdatas.size()); |
| ASSERT_STREQ("goats!", response.rrdatas[0].c_str()); |
| ASSERT_EQ(1u, resolver.requests()); |
| ASSERT_EQ(0u, resolver.cache_hits()); |
| ASSERT_EQ(0u, resolver.inflight_joins()); |
| |
| // Test a cache hit. |
| handle = resolver.Resolve("www.testing.notatld", kDNS_TESTING, 0, |
| callback.callback(), &response, 0, BoundNetLog()); |
| ASSERT_TRUE(handle != DnsRRResolver::kInvalidHandle); |
| ASSERT_EQ(OK, callback.WaitForResult()); |
| ASSERT_EQ(1u, response.rrdatas.size()); |
| ASSERT_STREQ("goats!", response.rrdatas[0].c_str()); |
| ASSERT_EQ(2u, resolver.requests()); |
| ASSERT_EQ(1u, resolver.cache_hits()); |
| ASSERT_EQ(0u, resolver.inflight_joins()); |
| |
| // Test that a callback is never made. This depends on there being another |
| // test after this one which will pump the MessageLoop. |
| handle = resolver.Resolve("www.testing.notatld", kDNS_TESTING, 0, |
| base::Bind(&FailTest), &response, 0, BoundNetLog()); |
| ASSERT_TRUE(handle != DnsRRResolver::kInvalidHandle); |
| resolver.CancelResolve(handle); |
| ASSERT_EQ(3u, resolver.requests()); |
| ASSERT_EQ(2u, resolver.cache_hits()); |
| ASSERT_EQ(0u, resolver.inflight_joins()); |
| |
| // Test what happens in the event of a network config change. |
| handle = resolver.Resolve("nx.testing.notatld", kDNS_TESTING, 0, |
| callback.callback(), &response, 0, BoundNetLog()); |
| ASSERT_TRUE(handle != DnsRRResolver::kInvalidHandle); |
| resolver.OnIPAddressChanged(); |
| ASSERT_TRUE(callback.have_result()); |
| ASSERT_EQ(ERR_NETWORK_CHANGED, callback.WaitForResult()); |
| ASSERT_EQ(4u, resolver.requests()); |
| ASSERT_EQ(2u, resolver.cache_hits()); |
| ASSERT_EQ(0u, resolver.inflight_joins()); |
| |
| // Test an inflight join. (Note that this depends on the cache being flushed |
| // by OnIPAddressChanged.) |
| TestCompletionCallback callback2; |
| DnsRRResolver::Handle handle2; |
| handle = resolver.Resolve("nx.testing.notatld", kDNS_TESTING, 0, |
| callback.callback(), &response, 0, BoundNetLog()); |
| ASSERT_TRUE(handle != DnsRRResolver::kInvalidHandle); |
| handle2 = resolver.Resolve("nx.testing.notatld", kDNS_TESTING, 0, |
| callback2.callback(), &response, 0, BoundNetLog()); |
| ASSERT_TRUE(handle2 != DnsRRResolver::kInvalidHandle); |
| ASSERT_EQ(ERR_NAME_NOT_RESOLVED, callback.WaitForResult()); |
| ASSERT_EQ(ERR_NAME_NOT_RESOLVED, callback2.WaitForResult()); |
| ASSERT_EQ(6u, resolver.requests()); |
| ASSERT_EQ(2u, resolver.cache_hits()); |
| ASSERT_EQ(1u, resolver.inflight_joins()); |
| } |
| |
| #if defined(OS_POSIX) && !defined(OS_ANDROID) |
| // This is a DNS packet resulting from querying a recursive resolver for a TXT |
| // record for agl._pka.imperialviolet.org. You should be able to get a |
| // replacement from a packet capture should it ever be needed. |
| static const uint8 kExamplePacket[] = { |
| 0xce, 0xfe, 0x81, 0x80, 0x00, 0x01, 0x00, 0x02, 0x00, 0x06, 0x00, 0x01, 0x03, |
| 0x61, 0x67, 0x6c, 0x04, 0x5f, 0x70, 0x6b, 0x61, 0x0e, 0x69, 0x6d, 0x70, 0x65, |
| 0x72, 0x69, 0x61, 0x6c, 0x76, 0x69, 0x6f, 0x6c, 0x65, 0x74, 0x03, 0x6f, 0x72, |
| 0x67, 0x00, 0x00, 0x10, 0x00, 0x01, 0xc0, 0x0c, 0x00, 0x10, 0x00, 0x01, 0x00, |
| 0x00, 0x01, 0x2c, 0x00, 0x5e, 0x5d, 0x76, 0x3d, 0x70, 0x6b, 0x61, 0x31, 0x3b, |
| 0x66, 0x70, 0x72, 0x3d, 0x32, 0x41, 0x46, 0x30, 0x30, 0x33, 0x32, 0x42, 0x34, |
| 0x38, 0x45, 0x38, 0x35, 0x36, 0x43, 0x45, 0x30, 0x36, 0x31, 0x35, 0x37, 0x41, |
| 0x31, 0x41, 0x44, 0x34, 0x33, 0x43, 0x36, 0x37, 0x30, 0x44, 0x45, 0x30, 0x34, |
| 0x41, 0x41, 0x41, 0x37, 0x34, 0x3b, 0x75, 0x72, 0x69, 0x3d, 0x68, 0x74, 0x74, |
| 0x70, 0x3a, 0x2f, 0x2f, 0x77, 0x77, 0x77, 0x2e, 0x69, 0x6d, 0x70, 0x65, 0x72, |
| 0x69, 0x61, 0x6c, 0x76, 0x69, 0x6f, 0x6c, 0x65, 0x74, 0x2e, 0x6f, 0x72, 0x67, |
| 0x2f, 0x6b, 0x65, 0x79, 0x2e, 0x61, 0x73, 0x63, 0xc0, 0x0c, 0x00, 0x2e, 0x00, |
| 0x01, 0x00, 0x00, 0x01, 0x2c, 0x00, 0xc6, 0x00, 0x10, 0x05, 0x04, 0x00, 0x01, |
| 0x51, 0x80, 0x4c, 0x74, 0x2f, 0x1a, 0x4c, 0x4c, 0x9c, 0xeb, 0x45, 0xc9, 0x0e, |
| 0x69, 0x6d, 0x70, 0x65, 0x72, 0x69, 0x61, 0x6c, 0x76, 0x69, 0x6f, 0x6c, 0x65, |
| 0x74, 0x03, 0x6f, 0x72, 0x67, 0x00, 0x3b, 0x6d, 0x3d, 0xbb, 0xae, 0x1b, 0x07, |
| 0x8d, 0xa9, 0xb0, 0xa7, 0xa5, 0x7a, 0x84, 0x24, 0x34, 0x29, 0x43, 0x36, 0x3f, |
| 0x5a, 0x48, 0x3b, 0x79, 0xa3, 0x16, 0xa4, 0x28, 0x5b, 0xd7, 0x03, 0xc6, 0x93, |
| 0xba, 0x4e, 0x93, 0x4d, 0x18, 0x5c, 0x98, 0xc2, 0x0d, 0x57, 0xd2, 0x6b, 0x9a, |
| 0x72, 0xbd, 0xe5, 0x8d, 0x10, 0x7b, 0x03, 0xe7, 0x19, 0x1e, 0x51, 0xe5, 0x7e, |
| 0x49, 0x6b, 0xa3, 0xa8, 0xf1, 0xd3, 0x1b, 0xff, 0x40, 0x26, 0x82, 0x65, 0xd0, |
| 0x74, 0x8e, 0xcf, 0xc9, 0x71, 0xea, 0x91, 0x57, 0x7e, 0x50, 0x61, 0x4d, 0x4b, |
| 0x77, 0x05, 0x6a, 0xd8, 0x3f, 0x12, 0x87, 0x50, 0xc2, 0x35, 0x13, 0xab, 0x01, |
| 0x78, 0xd2, 0x3a, 0x55, 0xa2, 0x89, 0xc8, 0x87, 0xe2, 0x7b, 0xec, 0x51, 0x7c, |
| 0xc0, 0x24, 0xb5, 0xa3, 0x33, 0x78, 0x98, 0x28, 0x8e, 0x9b, 0x6b, 0x88, 0x13, |
| 0x25, 0xfa, 0x1d, 0xdc, 0xf1, 0xf0, 0xa6, 0x8d, 0x2a, 0xbb, 0xbc, 0xb0, 0xc7, |
| 0x97, 0x98, 0x8e, 0xef, 0xd9, 0x12, 0x24, 0xee, 0x38, 0x50, 0xdb, 0xd3, 0x59, |
| 0xcc, 0x30, 0x54, 0x4c, 0x38, 0x94, 0x24, 0xbc, 0x75, 0xa5, 0xc0, 0xc4, 0x00, |
| 0x02, 0x00, 0x01, 0x00, 0x00, 0x00, 0x3a, 0x00, 0x15, 0x02, 0x62, 0x30, 0x03, |
| 0x6f, 0x72, 0x67, 0x0b, 0x61, 0x66, 0x69, 0x6c, 0x69, 0x61, 0x73, 0x2d, 0x6e, |
| 0x73, 0x74, 0xc0, 0xc4, 0xc0, 0xc4, 0x00, 0x02, 0x00, 0x01, 0x00, 0x00, 0x00, |
| 0x3a, 0x00, 0x19, 0x02, 0x63, 0x30, 0x03, 0x6f, 0x72, 0x67, 0x0b, 0x61, 0x66, |
| 0x69, 0x6c, 0x69, 0x61, 0x73, 0x2d, 0x6e, 0x73, 0x74, 0x04, 0x69, 0x6e, 0x66, |
| 0x6f, 0x00, 0xc0, 0xc4, 0x00, 0x02, 0x00, 0x01, 0x00, 0x00, 0x00, 0x3a, 0x00, |
| 0x05, 0x02, 0x61, 0x30, 0xc1, 0x99, 0xc0, 0xc4, 0x00, 0x02, 0x00, 0x01, 0x00, |
| 0x00, 0x00, 0x3a, 0x00, 0x05, 0x02, 0x62, 0x32, 0xc1, 0x78, 0xc0, 0xc4, 0x00, |
| 0x02, 0x00, 0x01, 0x00, 0x00, 0x00, 0x3a, 0x00, 0x05, 0x02, 0x64, 0x30, 0xc1, |
| 0x78, 0xc0, 0xc4, 0x00, 0x02, 0x00, 0x01, 0x00, 0x00, 0x00, 0x3a, 0x00, 0x05, |
| 0x02, 0x61, 0x32, 0xc1, 0x99, 0x00, 0x00, 0x29, 0x10, 0x00, 0x00, 0x00, 0x80, |
| 0x00, 0x00, 0x00, |
| }; |
| |
| TEST(DnsRRResolverTest, ParseExample) { |
| RRResponse response; |
| ASSERT_TRUE(response.ParseFromResponse(kExamplePacket, |
| sizeof(kExamplePacket), kDNS_TXT)); |
| ASSERT_EQ(1u, response.rrdatas.size()); |
| ASSERT_EQ(1u, response.signatures.size()); |
| ASSERT_STREQ("agl._pka.imperialviolet.org", response.name.c_str()); |
| ASSERT_STREQ("]v=pka1;fpr=2AF0032B48E856CE06157A1AD43C670DE04AAA74;" |
| "uri=http://www.imperialviolet.org/key.asc", |
| response.rrdatas[0].c_str()); |
| ASSERT_FALSE(response.dnssec); |
| } |
| |
| TEST(DnsRRResolverTest, FuzzTruncation) { |
| RRResponse response; |
| |
| for (unsigned len = sizeof(kExamplePacket); len <= sizeof(kExamplePacket); |
| len--) { |
| response.ParseFromResponse(kExamplePacket, len, kDNS_TXT); |
| } |
| } |
| |
| TEST(DnsRRResolverTest, FuzzCorruption) { |
| RRResponse response; |
| uint8 copy[sizeof(kExamplePacket)]; |
| |
| |
| for (unsigned bit_to_corrupt = 0; bit_to_corrupt < sizeof(kExamplePacket) * 8; |
| bit_to_corrupt++) { |
| unsigned byte = bit_to_corrupt >> 3; |
| unsigned bit = bit_to_corrupt & 7; |
| |
| memcpy(copy, kExamplePacket, sizeof(copy)); |
| copy[byte] ^= (1 << bit); |
| |
| response.ParseFromResponse(copy, sizeof(copy), kDNS_TXT); |
| } |
| } |
| #endif |
| |
| } // namespace |
| |
| } // namespace net |