| // Copyright (c) 2009 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/dns/dns_util.h" |
| |
| #include "base/stl_util.h" |
| #include "testing/gtest/include/gtest/gtest.h" |
| |
| namespace net { |
| |
| class DNSUtilTest : public testing::Test { |
| }; |
| |
| // IncludeNUL converts a char* to a std::string and includes the terminating |
| // NUL in the result. |
| static std::string IncludeNUL(const char* in) { |
| return std::string(in, strlen(in) + 1); |
| } |
| |
| TEST_F(DNSUtilTest, DNSDomainFromDot) { |
| std::string out; |
| |
| EXPECT_FALSE(DNSDomainFromDot("", &out)); |
| EXPECT_FALSE(DNSDomainFromDot(".", &out)); |
| EXPECT_FALSE(DNSDomainFromDot("..", &out)); |
| EXPECT_FALSE(DNSDomainFromDot("foo,bar.com", &out)); |
| |
| EXPECT_TRUE(DNSDomainFromDot("com", &out)); |
| EXPECT_EQ(out, IncludeNUL("\003com")); |
| EXPECT_TRUE(DNSDomainFromDot("google.com", &out)); |
| EXPECT_EQ(out, IncludeNUL("\x006google\003com")); |
| EXPECT_TRUE(DNSDomainFromDot("www.google.com", &out)); |
| EXPECT_EQ(out, IncludeNUL("\003www\006google\003com")); |
| |
| // Label is 63 chars: still valid |
| EXPECT_TRUE(DNSDomainFromDot("z23456789a123456789a123456789a123456789a123456789a123456789a123", &out)); |
| EXPECT_EQ(out, IncludeNUL("\077z23456789a123456789a123456789a123456789a123456789a123456789a123")); |
| |
| // Label is too long: invalid |
| EXPECT_FALSE(DNSDomainFromDot("123456789a123456789a123456789a123456789a123456789a123456789a1234", &out)); |
| |
| // 253 characters in the name: still valid |
| EXPECT_TRUE(DNSDomainFromDot("abcdefghi.abcdefghi.abcdefghi.abcdefghi.abcdefghi.abcdefghi.abcdefghi.abcdefghi.abcdefghi.abcdefghi.abcdefghi.abcdefghi.abcdefghi.abcdefghi.abcdefghi.abcdefghi.abcdefghi.abcdefghi.abcdefghi.abcdefghi.abcdefghi.abcdefghi.abcdefghi.abcdefghi.abcdefghi.abc", &out)); |
| EXPECT_EQ(out, IncludeNUL("\011abcdefghi\011abcdefghi\011abcdefghi\011abcdefghi\011abcdefghi\011abcdefghi\011abcdefghi\011abcdefghi\011abcdefghi\011abcdefghi\011abcdefghi\011abcdefghi\011abcdefghi\011abcdefghi\011abcdefghi\011abcdefghi\011abcdefghi\011abcdefghi\011abcdefghi\011abcdefghi\011abcdefghi\011abcdefghi\011abcdefghi\011abcdefghi\011abcdefghi\003abc")); |
| |
| // 254 characters in the name: invalid |
| EXPECT_FALSE(DNSDomainFromDot("123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789.1234", &out)); |
| |
| // Zero length labels should fail, except that one trailing dot is allowed |
| // (to disable suffix search): |
| EXPECT_FALSE(DNSDomainFromDot(".google.com", &out)); |
| EXPECT_FALSE(DNSDomainFromDot("www..google.com", &out)); |
| |
| EXPECT_TRUE(DNSDomainFromDot("www.google.com.", &out)); |
| EXPECT_EQ(out, IncludeNUL("\003www\006google\003com")); |
| |
| // Spaces and parenthesis not permitted. |
| EXPECT_FALSE(DNSDomainFromDot("_ipp._tcp.local.foo printer (bar)", &out)); |
| } |
| |
| TEST_F(DNSUtilTest, DNSDomainFromUnrestrictedDot) { |
| std::string out; |
| |
| // Spaces and parentheses allowed. |
| EXPECT_TRUE( |
| DNSDomainFromUnrestrictedDot("_ipp._tcp.local.foo printer (bar)", &out)); |
| EXPECT_EQ(out, IncludeNUL("\004_ipp\004_tcp\005local\021foo printer (bar)")); |
| |
| // Standard dotted domains still work correctly. |
| EXPECT_TRUE(DNSDomainFromUnrestrictedDot("www.google.com", &out)); |
| EXPECT_EQ(out, IncludeNUL("\003www\006google\003com")); |
| |
| // Label is too long: invalid |
| EXPECT_FALSE(DNSDomainFromUnrestrictedDot( |
| "123456789a123456789a123456789a123456789a123456789a123456789a1234", |
| &out)); |
| } |
| |
| TEST_F(DNSUtilTest, DNSDomainToString) { |
| EXPECT_EQ("", DNSDomainToString(IncludeNUL(""))); |
| EXPECT_EQ("foo", DNSDomainToString(IncludeNUL("\003foo"))); |
| EXPECT_EQ("foo.bar", DNSDomainToString(IncludeNUL("\003foo\003bar"))); |
| EXPECT_EQ("foo.bar.uk", |
| DNSDomainToString(IncludeNUL("\003foo\003bar\002uk"))); |
| |
| // It should cope with a lack of root label. |
| EXPECT_EQ("foo.bar", DNSDomainToString("\003foo\003bar")); |
| |
| // Invalid inputs should return an empty string. |
| EXPECT_EQ("", DNSDomainToString(IncludeNUL("\x80"))); |
| EXPECT_EQ("", DNSDomainToString("\x06")); |
| } |
| |
| TEST_F(DNSUtilTest, IsValidDNSDomain) { |
| const char* const bad_hostnames[] = { |
| "%20%20noodles.blorg", "noo dles.blorg ", "noo dles.blorg. ", |
| "^noodles.blorg", "noodles^.blorg", "noo&dles.blorg", |
| "noodles.blorg`", "www.-noodles.blorg", |
| }; |
| |
| for (size_t i = 0; i < base::size(bad_hostnames); ++i) { |
| EXPECT_FALSE(IsValidDNSDomain(bad_hostnames[i])); |
| } |
| |
| const char* const good_hostnames[] = { |
| "www.noodles.blorg", "1www.noodles.blorg", "www.2noodles.blorg", |
| "www.n--oodles.blorg", "www.noodl_es.blorg", "www.no-_odles.blorg", |
| "www_.noodles.blorg", "www.noodles.blorg.", "_privet._tcp.local", |
| }; |
| |
| for (size_t i = 0; i < base::size(good_hostnames); ++i) { |
| EXPECT_TRUE(IsValidDNSDomain(good_hostnames[i])); |
| } |
| } |
| |
| TEST_F(DNSUtilTest, IsValidUnrestrictedDNSDomain) { |
| const char* const good_hostnames[] = { |
| "www.noodles.blorg", "1www.noodles.blorg", "www.2noodles.blorg", |
| "www.n--oodles.blorg", "www.noodl_es.blorg", "www.no-_odles.blorg", |
| "www_.noodles.blorg", "www.noodles.blorg.", "_privet._tcp.local", |
| "%20%20noodles.blorg", "noo dles.blorg ", "noo dles_ipp._tcp.local", |
| "www.nood(les).blorg", "noo dl(es)._tcp.local", |
| }; |
| |
| for (size_t i = 0; i < base::size(good_hostnames); ++i) { |
| EXPECT_TRUE(IsValidUnrestrictedDNSDomain(good_hostnames[i])); |
| } |
| } |
| |
| TEST_F(DNSUtilTest, GetURLFromTemplateWithoutParameters) { |
| EXPECT_EQ("https://dnsserver.example.net/dns-query", |
| GetURLFromTemplateWithoutParameters( |
| "https://dnsserver.example.net/dns-query{?dns}")); |
| } |
| |
| } // namespace net |