net/unittest/net_if.cc

/*
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Copyright (c) 2022, Stable Cloud Computing, Inc.
 
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
 
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   this software without specific prior written permission.
 
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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*/
#include <net/net_if.h>
#include <gtest/gtest.h>
#include <iostream>
#include <algorithm>
#include <string>
#include <net/socket.h>
 
using std::cout;
using std::endl;
using std::string;
using std::vector;
using scc::net::NetIf;
using scc::net::NetIfAddr;
using scc::net::InetAddr;
using scc::net::InetAddrFlag;
using scc::net::NetIfFlag;
 
TEST(interfaces_test, Find_lo)
{
    auto ifs = NetIf::all_interfaces();
    auto i = std::find_if(ifs.begin(), ifs.end(), [](const auto& x) -> bool
    {
        return x.name() == "lo";
    });
    ASSERT_NE(i, ifs.end());
    ASSERT_EQ(i->index(), 1);
    ASSERT_EQ(i->hw_addr(), "00:00:00:00:00:00");
    cout << *i << endl;
}
 
TEST(interfaces_test, Find_lo_ipv4)
{
    auto ifs = NetIf::all_interfaces();
    auto i = std::find_if(ifs.begin(), ifs.end(), [](const auto& x) -> bool
    {
        return x.name() == "lo";
    });
    ASSERT_NE(i, ifs.end());
    auto sa = std::find_if(i->addrs().begin(), i->addrs().end(), [](const NetIfAddr& ad) -> bool
    {
        return ad.test_flags(InetAddrFlag::ipv4|InetAddrFlag::loopback);
    });
    ASSERT_NE(sa, i->addrs().end());
    cout << *i << endl;
}
 
TEST(interfaces_test, find_lo_ipv6)
{
    auto ifs = NetIf::all_interfaces();
    auto i = std::find_if(ifs.begin(), ifs.end(), [](const auto& x) -> bool
    {
        return x.name() == "lo";
    });
    ASSERT_NE(i, ifs.end());
    auto sa = std::find_if(i->addrs().begin(), i->addrs().end(), [](const NetIfAddr& ad) -> bool
    {
        return ad.test_flags(InetAddrFlag::ipv6|InetAddrFlag::loopback);
    });
    ASSERT_NE(sa, i->addrs().end());
    cout << *i << endl;
}
 
TEST(interfaces_test, find_unicast_ipv4)
{
    bool found = false;
    for (auto& i : NetIf::all_interfaces())
    {
        for (auto& j : i.addrs())
        {
            if ((j.test_flags(InetAddrFlag::ipv4|InetAddrFlag::unicast)))
            {
                found = true;
                cout << j << endl;
            }
        }
    }
    EXPECT_TRUE(found);
}
 
TEST(interfaces_test, find_unicast_ipv6)
{
    bool found = false;
    for (auto& i : NetIf::all_interfaces())
    {
        for (auto& j : i.addrs())
        {
            if ((j.test_flags(InetAddrFlag::ipv6|InetAddrFlag::unicast)))
            {
                found = true;
                cout << j << endl;
            }
        }
    }
    EXPECT_TRUE(found);
}
 
TEST(interfaces_test, iterate_addrs_test_local)
{
    auto ifs = NetIf::all_interfaces();
    ASSERT_TRUE(ifs.size() > 0);    // there is always a lo
    for (auto& i : ifs)
    {
        cout << i << endl;
 
        for (auto& j : i.addrs())
        {
            if ((j.test_flags(InetAddrFlag::link_local)))
            {
                cout << "*found link local address: " << j << endl;
                ASSERT_EQ(j.scope_id(), i.index());
            }
        }
    }
}
 
TEST(host_addrs, local_addrs)
{
    vector<string> hosts({
        "localhost",
        "127.0.0.1",
        "::1",
        "::"
    });
 
    for (auto& h : hosts)
    {
        auto v = NetIf::host_addrs(h);
        cout << "host " << h << " for all returned " << v.size() << " entries" << endl;
        for (auto& i : v)
        {
            cout << i << endl;
        }
        ASSERT_GT(v.size(), 0);
        v = NetIf::host_addrs(h, NetIf::SocketType::tcp_stream);
        cout << "host " << h << " for tcp returned " << v.size() << " entries" << endl;
        for (auto& i : v)
        {
            cout << i << endl;
        }
        ASSERT_GT(v.size(), 0);
        v = NetIf::host_addrs(h, NetIf::SocketType::udp_datagram);
        cout << "host " << h << " for udp returned " << v.size() << " entries" << endl;
        for (auto& i : v)
        {
            cout << i << endl;
        }
        ASSERT_GT(v.size(), 0);
    }
    auto ifs = NetIf::all_interfaces();
    for (auto& i : ifs)
    {
        if (i.test_flags(NetIfFlag::if_up|NetIfFlag::if_running))
        {
            cout << i << endl;
            for (auto& a : i.addrs())
            {
                auto v = NetIf::host_addrs(a.host());
                ASSERT_GT(v.size(), 0);
            }
        }
    }
}