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+//
+// network_v4.cpp
+// ~~~~~~~~~~~~~~
+//
+// Copyright (c) 2003-2021 Christopher M. Kohlhoff (chris at kohlhoff dot com)
+// Copyright (c) 2014 Oliver Kowalke (oliver dot kowalke at gmail dot com)
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+//
+
+// Disable autolinking for unit tests.
+#if !defined(BOOST_ALL_NO_LIB)
+#define BOOST_ALL_NO_LIB 1
+#endif // !defined(BOOST_ALL_NO_LIB)
+
+// Test that header file is self-contained.
+#include "asio/ip/network_v4.hpp"
+
+#include "../unit_test.hpp"
+#include <sstream>
+
+//------------------------------------------------------------------------------
+
+// ip_network_v4_compile test
+// ~~~~~~~~~~~~~~~~~~~~~~~~~~
+// The following test checks that all public member functions on the class
+// ip::network_v4 compile and link correctly. Runtime failures are ignored.
+
+namespace ip_network_v4_compile {
+
+void test()
+{
+ using namespace asio;
+ namespace ip = asio::ip;
+
+ try
+ {
+ asio::error_code ec;
+
+ // network_v4 constructors.
+
+ ip::network_v4 net1(ip::make_address_v4("192.168.1.0"), 32);
+ ip::network_v4 net2(ip::make_address_v4("192.168.1.0"),
+ ip::make_address_v4("255.255.255.0"));
+
+ // network_v4 functions.
+
+ ip::address_v4 addr1 = net1.address();
+ (void)addr1;
+
+ unsigned short prefix_len = net1.prefix_length();
+ (void)prefix_len;
+
+ ip::address_v4 addr2 = net1.netmask();
+ (void)addr2;
+
+ ip::address_v4 addr3 = net1.network();
+ (void)addr3;
+
+ ip::address_v4 addr4 = net1.broadcast();
+ (void)addr4;
+
+ ip::address_v4_range hosts = net1.hosts();
+ (void)hosts;
+
+ ip::network_v4 net3 = net1.canonical();
+ (void)net3;
+
+ bool b1 = net1.is_host();
+ (void)b1;
+
+ bool b2 = net1.is_subnet_of(net2);
+ (void)b2;
+
+ std::string s1 = net1.to_string();
+ (void)s1;
+
+ std::string s2 = net1.to_string(ec);
+ (void)s2;
+
+ // network_v4 comparisons.
+
+ bool b3 = (net1 == net2);
+ (void)b3;
+
+ bool b4 = (net1 != net2);
+ (void)b4;
+
+ // network_v4 creation functions.
+
+ net1 = ip::make_network_v4(ip::address_v4(), 24);
+ net1 = ip::make_network_v4(ip::address_v4(), ip::address_v4());
+ net1 = ip::make_network_v4("10.0.0.0/8");
+ net1 = ip::make_network_v4("10.0.0.0/8", ec);
+ net1 = ip::make_network_v4(s1);
+ net1 = ip::make_network_v4(s1, ec);
+#if defined(ASIO_HAS_STRING_VIEW)
+# if defined(ASIO_HAS_STD_STRING_VIEW)
+ std::string_view string_view_value("10.0.0.0/8");
+# elif defined(ASIO_HAS_STD_EXPERIMENTAL_STRING_VIEW)
+ std::experimental::string_view string_view_value("10.0.0.0/8");
+# endif // defined(ASIO_HAS_STD_EXPERIMENTAL_STRING_VIEW)
+ net1 = ip::make_network_v4(string_view_value);
+ net1 = ip::make_network_v4(string_view_value, ec);
+#endif // defined(ASIO_HAS_STRING_VIEW)
+
+ // network_v4 I/O.
+
+ std::ostringstream os;
+ os << net1;
+
+#if !defined(BOOST_NO_STD_WSTREAMBUF)
+ std::wostringstream wos;
+ wos << net1;
+#endif // !defined(BOOST_NO_STD_WSTREAMBUF)
+ }
+ catch (std::exception&)
+ {
+ }
+}
+
+} // namespace ip_network_v4_compile
+
+//------------------------------------------------------------------------------
+
+// ip_network_v4_runtime test
+// ~~~~~~~~~~~~~~~~~~~~~~~~~~
+// The following test checks that the various public member functions meet the
+// necessary postconditions.
+
+namespace ip_network_v4_runtime {
+
+void test()
+{
+ using asio::ip::address_v4;
+ using asio::ip::make_address_v4;
+ using asio::ip::network_v4;
+ using asio::ip::make_network_v4;
+
+ address_v4 addr = make_address_v4("1.2.3.4");
+
+ // calculate prefix length
+
+ network_v4 net1(addr, make_address_v4("255.255.255.0"));
+ ASIO_CHECK(net1.prefix_length() == 24);
+
+ network_v4 net2(addr, make_address_v4("255.255.255.192"));
+ ASIO_CHECK(net2.prefix_length() == 26);
+
+ network_v4 net3(addr, make_address_v4("128.0.0.0"));
+ ASIO_CHECK(net3.prefix_length() == 1);
+
+ std::string msg;
+ try
+ {
+ make_network_v4(addr, make_address_v4("255.255.255.1"));
+ }
+ catch(std::exception& ex)
+ {
+ msg = ex.what();
+ }
+ ASIO_CHECK(msg == std::string("non-contiguous netmask"));
+
+ msg.clear();
+ try
+ {
+ make_network_v4(addr, make_address_v4("0.255.255.0"));
+ }
+ catch(std::exception& ex)
+ {
+ msg = ex.what();
+ }
+ ASIO_CHECK(msg == std::string("non-contiguous netmask"));
+
+ // calculate netmask
+
+ network_v4 net4(addr, 23);
+ ASIO_CHECK(net4.netmask() == make_address_v4("255.255.254.0"));
+
+ network_v4 net5(addr, 12);
+ ASIO_CHECK(net5.netmask() == make_address_v4("255.240.0.0"));
+
+ network_v4 net6(addr, 24);
+ ASIO_CHECK(net6.netmask() == make_address_v4("255.255.255.0"));
+
+ network_v4 net7(addr, 16);
+ ASIO_CHECK(net7.netmask() == make_address_v4("255.255.0.0"));
+
+ network_v4 net8(addr, 8);
+ ASIO_CHECK(net8.netmask() == make_address_v4("255.0.0.0"));
+
+ network_v4 net9(addr, 32);
+ ASIO_CHECK(net9.netmask() == make_address_v4("255.255.255.255"));
+
+ network_v4 net10(addr, 1);
+ ASIO_CHECK(net10.netmask() == make_address_v4("128.0.0.0"));
+
+ network_v4 net11(addr, 0);
+ ASIO_CHECK(net11.netmask() == make_address_v4("0.0.0.0"));
+
+ msg.clear();
+ try
+ {
+ make_network_v4(addr, 33);
+ }
+ catch(std::out_of_range& ex)
+ {
+ msg = ex.what();
+ }
+ ASIO_CHECK(msg == std::string("prefix length too large"));
+
+ // construct address range from address and prefix length
+ ASIO_CHECK(network_v4(make_address_v4("192.168.77.100"), 32).network() == make_address_v4("192.168.77.100"));
+ ASIO_CHECK(network_v4(make_address_v4("192.168.77.100"), 24).network() == make_address_v4("192.168.77.0"));
+ ASIO_CHECK(network_v4(make_address_v4("192.168.77.128"), 25).network() == make_address_v4("192.168.77.128"));
+
+ // construct address range from string in CIDR notation
+ ASIO_CHECK(make_network_v4("192.168.77.100/32").network() == make_address_v4("192.168.77.100"));
+ ASIO_CHECK(make_network_v4("192.168.77.100/24").network() == make_address_v4("192.168.77.0"));
+ ASIO_CHECK(make_network_v4("192.168.77.128/25").network() == make_address_v4("192.168.77.128"));
+
+ // construct network from invalid string
+ asio::error_code ec;
+ make_network_v4("10.0.0.256/24", ec);
+ ASIO_CHECK(!!ec);
+ make_network_v4("10.0.0.0/33", ec);
+ ASIO_CHECK(!!ec);
+ make_network_v4("10.0.0.0/-1", ec);
+ ASIO_CHECK(!!ec);
+ make_network_v4("10.0.0.0/", ec);
+ ASIO_CHECK(!!ec);
+ make_network_v4("10.0.0.0", ec);
+ ASIO_CHECK(!!ec);
+
+ // prefix length
+ ASIO_CHECK(make_network_v4("193.99.144.80/24").prefix_length() == 24);
+ ASIO_CHECK(network_v4(make_address_v4("193.99.144.80"), 24).prefix_length() == 24);
+ ASIO_CHECK(network_v4(make_address_v4("192.168.77.0"), make_address_v4("255.255.255.0")).prefix_length() == 24);
+
+ // to string
+ std::string a("192.168.77.0/32");
+ ASIO_CHECK(make_network_v4(a.c_str()).to_string() == a);
+ ASIO_CHECK(network_v4(make_address_v4("192.168.77.10"), 24).to_string() == std::string("192.168.77.10/24"));
+
+ // return host part
+ ASIO_CHECK(make_network_v4("192.168.77.11/24").address() == make_address_v4("192.168.77.11"));
+
+ // return host in CIDR notation
+ ASIO_CHECK(make_network_v4("192.168.78.30/20").address().to_string() == "192.168.78.30");
+
+ // return network in CIDR notation
+ ASIO_CHECK(make_network_v4("192.168.78.30/20").canonical().to_string() == "192.168.64.0/20");
+
+ // is host
+ ASIO_CHECK(make_network_v4("192.168.77.0/32").is_host());
+ ASIO_CHECK(!make_network_v4("192.168.77.0/31").is_host());
+
+ // is real subnet of
+ ASIO_CHECK(make_network_v4("192.168.0.192/24").is_subnet_of(make_network_v4("192.168.0.0/16")));
+ ASIO_CHECK(make_network_v4("192.168.0.0/24").is_subnet_of(make_network_v4("192.168.192.168/16")));
+ ASIO_CHECK(make_network_v4("192.168.0.192/24").is_subnet_of(make_network_v4("192.168.192.168/16")));
+ ASIO_CHECK(make_network_v4("192.168.0.0/24").is_subnet_of(make_network_v4("192.168.0.0/16")));
+ ASIO_CHECK(make_network_v4("192.168.0.0/24").is_subnet_of(make_network_v4("192.168.0.0/23")));
+ ASIO_CHECK(make_network_v4("192.168.0.0/24").is_subnet_of(make_network_v4("192.168.0.0/0")));
+ ASIO_CHECK(make_network_v4("192.168.0.0/32").is_subnet_of(make_network_v4("192.168.0.0/24")));
+
+ ASIO_CHECK(!make_network_v4("192.168.0.0/32").is_subnet_of(make_network_v4("192.168.0.0/32")));
+ ASIO_CHECK(!make_network_v4("192.168.0.0/24").is_subnet_of(make_network_v4("192.168.1.0/24")));
+ ASIO_CHECK(!make_network_v4("192.168.0.0/16").is_subnet_of(make_network_v4("192.168.1.0/24")));
+
+ network_v4 r(make_network_v4("192.168.0.0/24"));
+ ASIO_CHECK(!r.is_subnet_of(r));
+
+ network_v4 net12(make_network_v4("192.168.0.2/24"));
+ network_v4 net13(make_network_v4("192.168.1.1/28"));
+ network_v4 net14(make_network_v4("192.168.1.21/28"));
+ // network
+ ASIO_CHECK(net12.network() == make_address_v4("192.168.0.0"));
+ ASIO_CHECK(net13.network() == make_address_v4("192.168.1.0"));
+ ASIO_CHECK(net14.network() == make_address_v4("192.168.1.16"));
+ // netmask
+ ASIO_CHECK(net12.netmask() == make_address_v4("255.255.255.0"));
+ ASIO_CHECK(net13.netmask() == make_address_v4("255.255.255.240"));
+ ASIO_CHECK(net14.netmask() == make_address_v4("255.255.255.240"));
+ // broadcast
+ ASIO_CHECK(net12.broadcast() == make_address_v4("192.168.0.255"));
+ ASIO_CHECK(net13.broadcast() == make_address_v4("192.168.1.15"));
+ ASIO_CHECK(net14.broadcast() == make_address_v4("192.168.1.31"));
+ // iterator
+ ASIO_CHECK(std::distance(net12.hosts().begin(),net12.hosts().end()) == 254);
+ ASIO_CHECK(*net12.hosts().begin() == make_address_v4("192.168.0.1"));
+ ASIO_CHECK(net12.hosts().end() != net12.hosts().find(make_address_v4("192.168.0.10")));
+ ASIO_CHECK(net12.hosts().end() == net12.hosts().find(make_address_v4("192.168.1.10")));
+ ASIO_CHECK(std::distance(net13.hosts().begin(),net13.hosts().end()) == 14);
+ ASIO_CHECK(*net13.hosts().begin() == make_address_v4("192.168.1.1"));
+ ASIO_CHECK(net13.hosts().end() != net13.hosts().find(make_address_v4("192.168.1.14")));
+ ASIO_CHECK(net13.hosts().end() == net13.hosts().find(make_address_v4("192.168.1.15")));
+ ASIO_CHECK(std::distance(net14.hosts().begin(),net14.hosts().end()) == 14);
+ ASIO_CHECK(*net14.hosts().begin() == make_address_v4("192.168.1.17"));
+ ASIO_CHECK(net14.hosts().end() != net14.hosts().find(make_address_v4("192.168.1.30")));
+ ASIO_CHECK(net14.hosts().end() == net14.hosts().find(make_address_v4("192.168.1.31")));
+}
+
+} // namespace ip_network_v4_runtime
+
+//------------------------------------------------------------------------------
+
+ASIO_TEST_SUITE
+(
+ "ip/network_v4",
+ ASIO_TEST_CASE(ip_network_v4_compile::test)
+ ASIO_TEST_CASE(ip_network_v4_runtime::test)
+)