Resolve RFC 6761 localhost names to loopback

net/base/net_util_unittest.cc

 // Copyright (c) 2012 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/net_util.h"
 
 #include <string.h>
 
 #include <ostream>
 
@@ skipping 459 matching lines @@
 TEST(NetUtilTest, GetAddressFamily) {
   IPAddressNumber number;
   EXPECT_TRUE(ParseIPLiteralToNumber("192.168.0.1", &number));
   EXPECT_EQ(ADDRESS_FAMILY_IPV4, GetAddressFamily(number));
   EXPECT_TRUE(ParseIPLiteralToNumber("1:abcd::3:4:ff", &number));
   EXPECT_EQ(ADDRESS_FAMILY_IPV6, GetAddressFamily(number));
 }
 
 TEST(NetUtilTest, IsLocalhost) {
   EXPECT_TRUE(IsLocalhost("localhost"));
+  EXPECT_TRUE(IsLocalhost("localhost."));
   EXPECT_TRUE(IsLocalhost("localhost.localdomain"));
+  EXPECT_TRUE(IsLocalhost("localhost.localdomain."));
   EXPECT_TRUE(IsLocalhost("localhost6"));
+  EXPECT_TRUE(IsLocalhost("localhost6."));
   EXPECT_TRUE(IsLocalhost("localhost6.localdomain6"));
+  EXPECT_TRUE(IsLocalhost("localhost6.localdomain6."));
   EXPECT_TRUE(IsLocalhost("127.0.0.1"));
   EXPECT_TRUE(IsLocalhost("127.0.1.0"));
   EXPECT_TRUE(IsLocalhost("127.1.0.0"));
   EXPECT_TRUE(IsLocalhost("127.0.0.255"));
   EXPECT_TRUE(IsLocalhost("127.0.255.0"));
   EXPECT_TRUE(IsLocalhost("127.255.0.0"));
   EXPECT_TRUE(IsLocalhost("::1"));
   EXPECT_TRUE(IsLocalhost("0:0:0:0:0:0:0:1"));
   EXPECT_TRUE(IsLocalhost("foo.localhost"));
+  EXPECT_TRUE(IsLocalhost("foo.localhost."));
 
   EXPECT_FALSE(IsLocalhost("localhostx"));
+  EXPECT_FALSE(IsLocalhost("localhost.x"));
   EXPECT_FALSE(IsLocalhost("foo.localdomain"));
+  EXPECT_FALSE(IsLocalhost("foo.localdomain.x"));
   EXPECT_FALSE(IsLocalhost("localhost6x"));
   EXPECT_FALSE(IsLocalhost("localhost.localdomain6"));
   EXPECT_FALSE(IsLocalhost("localhost6.localdomain"));
   EXPECT_FALSE(IsLocalhost("127.0.0.1.1"));
   EXPECT_FALSE(IsLocalhost(".127.0.0.255"));
   EXPECT_FALSE(IsLocalhost("::2"));
   EXPECT_FALSE(IsLocalhost("::1:1"));
   EXPECT_FALSE(IsLocalhost("0:0:0:0:1:0:0:1"));
   EXPECT_FALSE(IsLocalhost("::1:1"));
   EXPECT_FALSE(IsLocalhost("0:0:0:0:0:0:0:0:1"));
   EXPECT_FALSE(IsLocalhost("foo.localhost.com"));
   EXPECT_FALSE(IsLocalhost("foo.localhoste"));
 }
 
+TEST(NetUtilTest, IsLocalhostHostname) {
+  bool isLocalhost6;
+  EXPECT_TRUE(IsLocalhostHostname("localhost", &isLocalhost6));
+  EXPECT_FALSE(isLocalhost6);
+  EXPECT_TRUE(IsLocalhostHostname("localhost.", &isLocalhost6));
+  EXPECT_FALSE(isLocalhost6);
+  EXPECT_TRUE(IsLocalhostHostname("localhost.localdomain", &isLocalhost6));
+  EXPECT_FALSE(isLocalhost6);
+  EXPECT_TRUE(IsLocalhostHostname("localhost.localdomain.", &isLocalhost6));
+  EXPECT_FALSE(isLocalhost6);
+  EXPECT_TRUE(IsLocalhostHostname("foo.localhost", &isLocalhost6));
+  EXPECT_FALSE(isLocalhost6);
+  EXPECT_TRUE(IsLocalhostHostname("foo.localhost.", &isLocalhost6));
+  EXPECT_FALSE(isLocalhost6);
+
+  EXPECT_TRUE(IsLocalhostHostname("localhost6", &isLocalhost6));
+  EXPECT_TRUE(isLocalhost6);
+  EXPECT_TRUE(IsLocalhostHostname("localhost6.", &isLocalhost6));
+  EXPECT_TRUE(isLocalhost6);
+  EXPECT_TRUE(IsLocalhostHostname("localhost6.localdomain6", &isLocalhost6));
+  EXPECT_TRUE(isLocalhost6);
+  EXPECT_TRUE(IsLocalhostHostname("localhost6.localdomain6.", &isLocalhost6));
+  EXPECT_TRUE(isLocalhost6);
+
+  EXPECT_FALSE(IsLocalhostHostname("127.0.0.1", &isLocalhost6));
+  EXPECT_FALSE(IsLocalhostHostname("::1", &isLocalhost6));
+  EXPECT_FALSE(IsLocalhostHostname("0:0:0:0:0:0:0:1", &isLocalhost6));
+  EXPECT_FALSE(IsLocalhostHostname("localhostx", &isLocalhost6));
+  EXPECT_FALSE(IsLocalhostHostname("localhost.x", &isLocalhost6));
+  EXPECT_FALSE(IsLocalhostHostname("foo.localdomain", &isLocalhost6));
+  EXPECT_FALSE(IsLocalhostHostname("foo.localdomain.x", &isLocalhost6));
+  EXPECT_FALSE(IsLocalhostHostname("localhost6x", &isLocalhost6));
+  EXPECT_FALSE(IsLocalhostHostname("localhost.localdomain6", &isLocalhost6));
+  EXPECT_FALSE(IsLocalhostHostname("localhost6.localdomain", &isLocalhost6));
+  EXPECT_FALSE(IsLocalhostHostname("127.0.0.1.1", &isLocalhost6));
+  EXPECT_FALSE(IsLocalhostHostname(".127.0.0.255", &isLocalhost6));
+  EXPECT_FALSE(IsLocalhostHostname("::2", &isLocalhost6));
+  EXPECT_FALSE(IsLocalhostHostname("::1:1", &isLocalhost6));
+  EXPECT_FALSE(IsLocalhostHostname("0:0:0:0:1:0:0:1", &isLocalhost6));
+  EXPECT_FALSE(IsLocalhostHostname("::1:1", &isLocalhost6));
+  EXPECT_FALSE(IsLocalhostHostname("0:0:0:0:0:0:0:0:1", &isLocalhost6));
+  EXPECT_FALSE(IsLocalhostHostname("foo.localhost.com", &isLocalhost6));
+  EXPECT_FALSE(IsLocalhostHostname("foo.localhoste", &isLocalhost6));
+}
+
 TEST(NetUtilTest, IsLocalhostTLD) {
   EXPECT_TRUE(IsLocalhostTLD("foo.localhost"));
   EXPECT_TRUE(IsLocalhostTLD("foo.localhost."));
   EXPECT_FALSE(IsLocalhostTLD("foo.localhos"));
   EXPECT_FALSE(IsLocalhostTLD("foo.localhost.com"));
   EXPECT_FALSE(IsLocalhost("foo.localhoste"));
 }
 
 TEST(NetUtilTest, GoogleHost) {
   struct GoogleHostCase {
@@ skipping 105 matching lines @@
 TEST_P(NetUtilNonUniqueNameTest, IsHostnameNonUnique) {
   const NonUniqueNameTestData& test_data = GetParam();
 
   EXPECT_EQ(test_data.is_unique, IsUnique(test_data.hostname));
 }
 
 INSTANTIATE_TEST_CASE_P(, NetUtilNonUniqueNameTest,
                         testing::ValuesIn(kNonUniqueNameTestData));
 
 }  // namespace net