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// Copyright 2019 The gVisor Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include <arpa/inet.h>
#include <netinet/in.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <sys/un.h>
#include <cstdio>
#include <cstring>
#include "gmock/gmock.h"
#include "gtest/gtest.h"
#include "test/syscalls/linux/ip_socket_test_util.h"
#include "test/syscalls/linux/socket_netlink_route_util.h"
#include "test/util/capability_util.h"
#include "test/util/socket_util.h"
#include "test/util/test_util.h"
namespace gvisor {
namespace testing {
// Test fixture for tests that apply to pairs of IP sockets.
using IPv6UnboundSocketTest = SimpleSocketTest;
TEST_P(IPv6UnboundSocketTest, ConnectToBadLocalAddress) {
SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_NET_ADMIN)));
// TODO(gvisor.dev/issue/4595): Addresses on net devices are not saved
// across save/restore.
DisableSave ds;
// Delete the loopback address from the loopback interface.
Link loopback_link = ASSERT_NO_ERRNO_AND_VALUE(LoopbackLink());
EXPECT_NO_ERRNO(LinkDelLocalAddr(loopback_link.index, AF_INET6,
/*prefixlen=*/128, &in6addr_loopback,
sizeof(in6addr_loopback)));
Cleanup defer_addr_removal =
Cleanup([loopback_link = std::move(loopback_link)] {
EXPECT_NO_ERRNO(LinkAddLocalAddr(loopback_link.index, AF_INET6,
/*prefixlen=*/128, &in6addr_loopback,
sizeof(in6addr_loopback)));
});
TestAddress addr = V6Loopback();
reinterpret_cast<sockaddr_in6*>(&addr.addr)->sin6_port = 65535;
auto sock = ASSERT_NO_ERRNO_AND_VALUE(NewSocket());
EXPECT_THAT(connect(sock->get(), AsSockAddr(&addr.addr), addr.addr_len),
SyscallFailsWithErrno(EADDRNOTAVAIL));
}
INSTANTIATE_TEST_SUITE_P(IPUnboundSockets, IPv6UnboundSocketTest,
::testing::ValuesIn(std::vector<SocketKind>{
IPv6UDPUnboundSocket(0),
IPv6TCPUnboundSocket(0)}));
using IPv4UnboundSocketTest = SimpleSocketTest;
TEST_P(IPv4UnboundSocketTest, ConnectToBadLocalAddress) {
SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_NET_ADMIN)));
// TODO(gvisor.dev/issue/4595): Addresses on net devices are not saved
// across save/restore.
DisableSave ds;
// Delete the loopback address from the loopback interface.
Link loopback_link = ASSERT_NO_ERRNO_AND_VALUE(LoopbackLink());
struct in_addr laddr;
laddr.s_addr = htonl(INADDR_LOOPBACK);
EXPECT_NO_ERRNO(LinkDelLocalAddr(loopback_link.index, AF_INET,
/*prefixlen=*/8, &laddr, sizeof(laddr)));
Cleanup defer_addr_removal = Cleanup(
[loopback_link = std::move(loopback_link), addr = std::move(laddr)] {
EXPECT_NO_ERRNO(LinkAddLocalAddr(loopback_link.index, AF_INET,
/*prefixlen=*/8, &addr, sizeof(addr)));
});
TestAddress addr = V4Loopback();
reinterpret_cast<sockaddr_in*>(&addr.addr)->sin_port = 65535;
auto sock = ASSERT_NO_ERRNO_AND_VALUE(NewSocket());
EXPECT_THAT(connect(sock->get(), AsSockAddr(&addr.addr), addr.addr_len),
SyscallFailsWithErrno(ENETUNREACH));
}
INSTANTIATE_TEST_SUITE_P(IPUnboundSockets, IPv4UnboundSocketTest,
::testing::ValuesIn(std::vector<SocketKind>{
IPv4UDPUnboundSocket(0),
IPv4TCPUnboundSocket(0)}));
} // namespace testing
} // namespace gvisor
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