/*
 *  Copyright 2004 The WebRTC Project Authors. All rights reserved.
 *
 *  Use of this source code is governed by a BSD-style license
 *  that can be found in the LICENSE file in the root of the source
 *  tree. An additional intellectual property rights grant can be found
 *  in the file PATENTS.  All contributing project authors may
 *  be found in the AUTHORS file in the root of the source tree.
 */

#if defined(WEBRTC_POSIX)
#include <netinet/in.h>  // for sockaddr_in
#endif

#include <string.h>

#include "rtc_base/ip_address.h"
#include "rtc_base/socket_address.h"
#include "test/gtest.h"

namespace rtc {

const in6_addr kTestV6Addr = {
    {{0x20, 0x01, 0x0d, 0xb8, 0x10, 0x20, 0x30, 0x40, 0x50, 0x60, 0x70, 0x80,
      0x90, 0xA0, 0xB0, 0xC0}}};
const in6_addr kMappedV4Addr = {
    {{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF,
      0x01, 0x02, 0x03, 0x04}}};
const std::string kTestV6AddrString = "2001:db8:1020:3040:5060:7080:90a0:b0c0";
const std::string kTestV6AddrAnonymizedString = "2001:db8:1020:x:x:x:x:x";
const std::string kTestV6AddrFullString =
    "[2001:db8:1020:3040:5060:7080:90a0:b0c0]:5678";
const std::string kTestV6AddrFullAnonymizedString =
    "[2001:db8:1020:x:x:x:x:x]:5678";

TEST(SocketAddressTest, TestDefaultCtor) {
  SocketAddress addr;
  EXPECT_FALSE(addr.IsUnresolvedIP());
  EXPECT_EQ(IPAddress(), addr.ipaddr());
  EXPECT_EQ(0, addr.port());
  EXPECT_EQ("", addr.hostname());
}

TEST(SocketAddressTest, TestIPPortCtor) {
  SocketAddress addr(IPAddress(0x01020304), 5678);
  EXPECT_FALSE(addr.IsUnresolvedIP());
  EXPECT_EQ(IPAddress(0x01020304U), addr.ipaddr());
  EXPECT_EQ(5678, addr.port());
  EXPECT_EQ("", addr.hostname());
  EXPECT_EQ("1.2.3.4:5678", addr.ToString());
}

TEST(SocketAddressTest, TestIPv4StringPortCtor) {
  SocketAddress addr("1.2.3.4", 5678);
  EXPECT_FALSE(addr.IsUnresolvedIP());
  EXPECT_EQ(IPAddress(0x01020304U), addr.ipaddr());
  EXPECT_EQ(5678, addr.port());
  EXPECT_EQ("1.2.3.4", addr.hostname());
  EXPECT_EQ("1.2.3.4:5678", addr.ToString());
}

TEST(SocketAddressTest, TestIPv6StringPortCtor) {
  SocketAddress addr2(kTestV6AddrString, 1234);
  IPAddress tocheck(kTestV6Addr);

  EXPECT_FALSE(addr2.IsUnresolvedIP());
  EXPECT_EQ(tocheck, addr2.ipaddr());
  EXPECT_EQ(1234, addr2.port());
  EXPECT_EQ(kTestV6AddrString, addr2.hostname());
  EXPECT_EQ("[" + kTestV6AddrString + "]:1234", addr2.ToString());
}

TEST(SocketAddressTest, TestSpecialStringPortCtor) {
  // inet_addr doesn't handle this address properly.
  SocketAddress addr("255.255.255.255", 5678);
  EXPECT_FALSE(addr.IsUnresolvedIP());
  EXPECT_EQ(IPAddress(0xFFFFFFFFU), addr.ipaddr());
  EXPECT_EQ(5678, addr.port());
  EXPECT_EQ("255.255.255.255", addr.hostname());
  EXPECT_EQ("255.255.255.255:5678", addr.ToString());
}

TEST(SocketAddressTest, TestHostnamePortCtor) {
  SocketAddress addr("a.b.com", 5678);
  EXPECT_TRUE(addr.IsUnresolvedIP());
  EXPECT_EQ(IPAddress(), addr.ipaddr());
  EXPECT_EQ(5678, addr.port());
  EXPECT_EQ("a.b.com", addr.hostname());
  EXPECT_EQ("a.b.com:5678", addr.ToString());
}

TEST(SocketAddressTest, TestCopyCtor) {
  SocketAddress from("1.2.3.4", 5678);
  SocketAddress addr(from);
  EXPECT_FALSE(addr.IsUnresolvedIP());
  EXPECT_EQ(IPAddress(0x01020304U), addr.ipaddr());
  EXPECT_EQ(5678, addr.port());
  EXPECT_EQ("1.2.3.4", addr.hostname());
  EXPECT_EQ("1.2.3.4:5678", addr.ToString());
}

TEST(SocketAddressTest, TestAssign) {
  SocketAddress from("1.2.3.4", 5678);
  SocketAddress addr(IPAddress(0x88888888), 9999);
  addr = from;
  EXPECT_FALSE(addr.IsUnresolvedIP());
  EXPECT_EQ(IPAddress(0x01020304U), addr.ipaddr());
  EXPECT_EQ(5678, addr.port());
  EXPECT_EQ("1.2.3.4", addr.hostname());
  EXPECT_EQ("1.2.3.4:5678", addr.ToString());
}

TEST(SocketAddressTest, TestSetIPPort) {
  SocketAddress addr(IPAddress(0x88888888), 9999);
  addr.SetIP(IPAddress(0x01020304));
  addr.SetPort(5678);
  EXPECT_FALSE(addr.IsUnresolvedIP());
  EXPECT_EQ(IPAddress(0x01020304U), addr.ipaddr());
  EXPECT_EQ(5678, addr.port());
  EXPECT_EQ("", addr.hostname());
  EXPECT_EQ("1.2.3.4:5678", addr.ToString());
}

TEST(SocketAddressTest, TestSetIPFromString) {
  SocketAddress addr(IPAddress(0x88888888), 9999);
  addr.SetIP("1.2.3.4");
  addr.SetPort(5678);
  EXPECT_FALSE(addr.IsUnresolvedIP());
  EXPECT_EQ(IPAddress(0x01020304U), addr.ipaddr());
  EXPECT_EQ(5678, addr.port());
  EXPECT_EQ("1.2.3.4", addr.hostname());
  EXPECT_EQ("1.2.3.4:5678", addr.ToString());
}

TEST(SocketAddressTest, TestSetIPFromHostname) {
  SocketAddress addr(IPAddress(0x88888888), 9999);
  addr.SetIP("a.b.com");
  addr.SetPort(5678);
  EXPECT_TRUE(addr.IsUnresolvedIP());
  EXPECT_EQ(IPAddress(), addr.ipaddr());
  EXPECT_EQ(5678, addr.port());
  EXPECT_EQ("a.b.com", addr.hostname());
  EXPECT_EQ("a.b.com:5678", addr.ToString());
  addr.SetResolvedIP(IPAddress(0x01020304));
  EXPECT_FALSE(addr.IsUnresolvedIP());
  EXPECT_EQ(IPAddress(0x01020304U), addr.ipaddr());
  EXPECT_EQ("a.b.com", addr.hostname());
  EXPECT_EQ("a.b.com:5678", addr.ToString());
}

TEST(SocketAddressTest, TestFromIPv4String) {
  SocketAddress addr;
  EXPECT_TRUE(addr.FromString("1.2.3.4:5678"));
  EXPECT_FALSE(addr.IsUnresolvedIP());
  EXPECT_EQ(IPAddress(0x01020304U), addr.ipaddr());
  EXPECT_EQ(5678, addr.port());
  EXPECT_EQ("1.2.3.4", addr.hostname());
  EXPECT_EQ("1.2.3.4:5678", addr.ToString());
}

TEST(SocketAddressTest, TestFromIPv6String) {
  SocketAddress addr;
  EXPECT_TRUE(addr.FromString(kTestV6AddrFullString));
  EXPECT_FALSE(addr.IsUnresolvedIP());
  EXPECT_EQ(5678, addr.port());
  EXPECT_EQ(kTestV6AddrString, addr.hostname());
  EXPECT_EQ(kTestV6AddrFullString, addr.ToString());
}

TEST(SocketAddressTest, TestFromHostname) {
  SocketAddress addr;
  EXPECT_TRUE(addr.FromString("a.b.com:5678"));
  EXPECT_TRUE(addr.IsUnresolvedIP());
  EXPECT_EQ(IPAddress(), addr.ipaddr());
  EXPECT_EQ(5678, addr.port());
  EXPECT_EQ("a.b.com", addr.hostname());
  EXPECT_EQ("a.b.com:5678", addr.ToString());
}

TEST(SocketAddressTest, TestToFromSockAddr) {
  SocketAddress from("1.2.3.4", 5678), addr;
  sockaddr_in addr_in;
  from.ToSockAddr(&addr_in);
  EXPECT_TRUE(addr.FromSockAddr(addr_in));
  EXPECT_FALSE(addr.IsUnresolvedIP());
  EXPECT_EQ(IPAddress(0x01020304U), addr.ipaddr());
  EXPECT_EQ(5678, addr.port());
  EXPECT_EQ("", addr.hostname());
  EXPECT_EQ("1.2.3.4:5678", addr.ToString());
}

TEST(SocketAddressTest, TestToFromSockAddrStorage) {
  SocketAddress from("1.2.3.4", 5678), addr;
  sockaddr_storage addr_storage;
  from.ToSockAddrStorage(&addr_storage);
  EXPECT_TRUE(SocketAddressFromSockAddrStorage(addr_storage, &addr));
  EXPECT_FALSE(addr.IsUnresolvedIP());
  EXPECT_EQ(IPAddress(0x01020304U), addr.ipaddr());
  EXPECT_EQ(5678, addr.port());
  EXPECT_EQ("", addr.hostname());
  EXPECT_EQ("1.2.3.4:5678", addr.ToString());

  addr.Clear();
  from.ToDualStackSockAddrStorage(&addr_storage);
  EXPECT_TRUE(SocketAddressFromSockAddrStorage(addr_storage, &addr));
  EXPECT_FALSE(addr.IsUnresolvedIP());
  EXPECT_EQ(IPAddress(kMappedV4Addr), addr.ipaddr());
  EXPECT_EQ(5678, addr.port());
  EXPECT_EQ("", addr.hostname());
  EXPECT_EQ("[::ffff:1.2.3.4]:5678", addr.ToString());

  addr.Clear();
  memset(&addr_storage, 0, sizeof(sockaddr_storage));
  from = SocketAddress(kTestV6AddrString, 5678);
  from.SetScopeID(6);
  from.ToSockAddrStorage(&addr_storage);
  EXPECT_TRUE(SocketAddressFromSockAddrStorage(addr_storage, &addr));
  EXPECT_FALSE(addr.IsUnresolvedIP());
  EXPECT_EQ(IPAddress(kTestV6Addr), addr.ipaddr());
  EXPECT_EQ(5678, addr.port());
  EXPECT_EQ("", addr.hostname());
  EXPECT_EQ(kTestV6AddrFullString, addr.ToString());
  EXPECT_EQ(6, addr.scope_id());

  addr.Clear();
  from.ToDualStackSockAddrStorage(&addr_storage);
  EXPECT_TRUE(SocketAddressFromSockAddrStorage(addr_storage, &addr));
  EXPECT_FALSE(addr.IsUnresolvedIP());
  EXPECT_EQ(IPAddress(kTestV6Addr), addr.ipaddr());
  EXPECT_EQ(5678, addr.port());
  EXPECT_EQ("", addr.hostname());
  EXPECT_EQ(kTestV6AddrFullString, addr.ToString());
  EXPECT_EQ(6, addr.scope_id());

  addr = from;
  addr_storage.ss_family = AF_UNSPEC;
  EXPECT_FALSE(SocketAddressFromSockAddrStorage(addr_storage, &addr));
  EXPECT_EQ(from, addr);

  EXPECT_FALSE(SocketAddressFromSockAddrStorage(addr_storage, nullptr));
}

bool AreEqual(const SocketAddress& addr1, const SocketAddress& addr2) {
  return addr1 == addr2 && addr2 == addr1 && !(addr1 != addr2) &&
         !(addr2 != addr1);
}

bool AreUnequal(const SocketAddress& addr1, const SocketAddress& addr2) {
  return !(addr1 == addr2) && !(addr2 == addr1) && addr1 != addr2 &&
         addr2 != addr1;
}

TEST(SocketAddressTest, TestEqualityOperators) {
  SocketAddress addr1("1.2.3.4", 5678);
  SocketAddress addr2("1.2.3.4", 5678);
  EXPECT_TRUE(AreEqual(addr1, addr2));

  addr2 = SocketAddress("0.0.0.1", 5678);
  EXPECT_TRUE(AreUnequal(addr1, addr2));

  addr2 = SocketAddress("1.2.3.4", 1234);
  EXPECT_TRUE(AreUnequal(addr1, addr2));

  addr2 = SocketAddress(kTestV6AddrString, 5678);
  EXPECT_TRUE(AreUnequal(addr1, addr2));

  addr1 = SocketAddress(kTestV6AddrString, 5678);
  EXPECT_TRUE(AreEqual(addr1, addr2));

  addr2 = SocketAddress(kTestV6AddrString, 1234);
  EXPECT_TRUE(AreUnequal(addr1, addr2));

  addr2 = SocketAddress("fe80::1", 5678);
  EXPECT_TRUE(AreUnequal(addr1, addr2));

  SocketAddress addr3("a.b.c.d", 1);
  SocketAddress addr4("b.b.c.d", 1);
  EXPECT_TRUE(AreUnequal(addr3, addr4));
  EXPECT_TRUE(AreEqual(addr3, addr3));

  addr3.SetIP(addr1.ip());
  addr4.SetIP(addr1.ip());
  EXPECT_TRUE(AreEqual(addr3, addr4));
}

bool IsLessThan(const SocketAddress& addr1, const SocketAddress& addr2) {
  return addr1 < addr2 && !(addr2 < addr1) && !(addr1 == addr2);
}

TEST(SocketAddressTest, TestComparisonOperator) {
  SocketAddress addr1("1.2.3.4", 5678);
  SocketAddress addr2("1.2.3.4", 5678);

  EXPECT_FALSE(addr1 < addr2);
  EXPECT_FALSE(addr2 < addr1);

  addr2 = SocketAddress("1.2.3.4", 5679);
  EXPECT_TRUE(IsLessThan(addr1, addr2));

  addr2 = SocketAddress("2.2.3.4", 49152);
  EXPECT_TRUE(IsLessThan(addr1, addr2));

  addr2 = SocketAddress(kTestV6AddrString, 5678);
  EXPECT_TRUE(IsLessThan(addr1, addr2));

  addr1 = SocketAddress("fe80::1", 5678);
  EXPECT_TRUE(IsLessThan(addr2, addr1));

  addr2 = SocketAddress("fe80::1", 5679);
  EXPECT_TRUE(IsLessThan(addr1, addr2));

  addr2 = SocketAddress("fe80::1", 5678);
  EXPECT_FALSE(addr1 < addr2);
  EXPECT_FALSE(addr2 < addr1);

  SocketAddress addr3("a.b.c.d", 1);
  SocketAddress addr4("b.b.c.d", 1);
  EXPECT_TRUE(IsLessThan(addr3, addr4));
}

TEST(SocketAddressTest, TestToSensitiveString) {
  SocketAddress addr_v4("1.2.3.4", 5678);
  EXPECT_EQ("1.2.3.4", addr_v4.HostAsURIString());
  EXPECT_EQ("1.2.3.4:5678", addr_v4.ToString());

  EXPECT_EQ("1.2.3.x", addr_v4.HostAsSensitiveURIString());
  EXPECT_EQ("1.2.3.x:5678", addr_v4.ToSensitiveString());

  SocketAddress addr_v6(kTestV6AddrString, 5678);
  EXPECT_EQ("[" + kTestV6AddrString + "]", addr_v6.HostAsURIString());
  EXPECT_EQ(kTestV6AddrFullString, addr_v6.ToString());
  EXPECT_EQ("[" + kTestV6AddrAnonymizedString + "]",
            addr_v6.HostAsSensitiveURIString());
  EXPECT_EQ(kTestV6AddrFullAnonymizedString, addr_v6.ToSensitiveString());
}

}  // namespace rtc