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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 "gtest/gtest.h"
#include "test/syscalls/linux/ip_socket_test_util.h"
#include "test/syscalls/linux/socket_test_util.h"
#include "test/util/test_util.h"
namespace gvisor {
namespace testing {
// Test fixture for tests that apply to pairs of IP sockets.
using IPUnboundSocketTest = SimpleSocketTest;
TEST_P(IPUnboundSocketTest, TtlDefault) {
auto socket = ASSERT_NO_ERRNO_AND_VALUE(NewSocket());
int get = -1;
socklen_t get_sz = sizeof(get);
EXPECT_THAT(getsockopt(socket->get(), IPPROTO_IP, IP_TTL, &get, &get_sz),
SyscallSucceedsWithValue(0));
EXPECT_EQ(get, 64);
EXPECT_EQ(get_sz, sizeof(get));
}
TEST_P(IPUnboundSocketTest, SetTtl) {
auto socket = ASSERT_NO_ERRNO_AND_VALUE(NewSocket());
int get1 = -1;
socklen_t get1_sz = sizeof(get1);
EXPECT_THAT(getsockopt(socket->get(), IPPROTO_IP, IP_TTL, &get1, &get1_sz),
SyscallSucceedsWithValue(0));
EXPECT_EQ(get1_sz, sizeof(get1));
int set = 100;
if (set == get1) {
set += 1;
}
socklen_t set_sz = sizeof(set);
EXPECT_THAT(setsockopt(socket->get(), IPPROTO_IP, IP_TTL, &set, set_sz),
SyscallSucceedsWithValue(0));
int get2 = -1;
socklen_t get2_sz = sizeof(get2);
EXPECT_THAT(getsockopt(socket->get(), IPPROTO_IP, IP_TTL, &get2, &get2_sz),
SyscallSucceedsWithValue(0));
EXPECT_EQ(get2_sz, sizeof(get2));
EXPECT_EQ(get2, set);
}
TEST_P(IPUnboundSocketTest, ResetTtlToDefault) {
auto socket = ASSERT_NO_ERRNO_AND_VALUE(NewSocket());
int get1 = -1;
socklen_t get1_sz = sizeof(get1);
EXPECT_THAT(getsockopt(socket->get(), IPPROTO_IP, IP_TTL, &get1, &get1_sz),
SyscallSucceedsWithValue(0));
EXPECT_EQ(get1_sz, sizeof(get1));
int set1 = 100;
if (set1 == get1) {
set1 += 1;
}
socklen_t set1_sz = sizeof(set1);
EXPECT_THAT(setsockopt(socket->get(), IPPROTO_IP, IP_TTL, &set1, set1_sz),
SyscallSucceedsWithValue(0));
int set2 = -1;
socklen_t set2_sz = sizeof(set2);
EXPECT_THAT(setsockopt(socket->get(), IPPROTO_IP, IP_TTL, &set2, set2_sz),
SyscallSucceedsWithValue(0));
int get2 = -1;
socklen_t get2_sz = sizeof(get2);
EXPECT_THAT(getsockopt(socket->get(), IPPROTO_IP, IP_TTL, &get2, &get2_sz),
SyscallSucceedsWithValue(0));
EXPECT_EQ(get2_sz, sizeof(get2));
EXPECT_EQ(get2, get1);
}
TEST_P(IPUnboundSocketTest, ZeroTtl) {
auto socket = ASSERT_NO_ERRNO_AND_VALUE(NewSocket());
int set = 0;
socklen_t set_sz = sizeof(set);
EXPECT_THAT(setsockopt(socket->get(), IPPROTO_IP, IP_TTL, &set, set_sz),
SyscallFailsWithErrno(EINVAL));
}
TEST_P(IPUnboundSocketTest, InvalidLargeTtl) {
auto socket = ASSERT_NO_ERRNO_AND_VALUE(NewSocket());
int set = 256;
socklen_t set_sz = sizeof(set);
EXPECT_THAT(setsockopt(socket->get(), IPPROTO_IP, IP_TTL, &set, set_sz),
SyscallFailsWithErrno(EINVAL));
}
TEST_P(IPUnboundSocketTest, InvalidNegativeTtl) {
auto socket = ASSERT_NO_ERRNO_AND_VALUE(NewSocket());
int set = -2;
socklen_t set_sz = sizeof(set);
EXPECT_THAT(setsockopt(socket->get(), IPPROTO_IP, IP_TTL, &set, set_sz),
SyscallFailsWithErrno(EINVAL));
}
INSTANTIATE_TEST_SUITE_P(
IPUnboundSockets, IPUnboundSocketTest,
::testing::ValuesIn(VecCat<SocketKind>(VecCat<SocketKind>(
ApplyVec<SocketKind>(IPv4UDPUnboundSocket,
AllBitwiseCombinations(List<int>{SOCK_DGRAM},
List<int>{0,
SOCK_NONBLOCK})),
ApplyVec<SocketKind>(IPv6UDPUnboundSocket,
AllBitwiseCombinations(List<int>{SOCK_DGRAM},
List<int>{0,
SOCK_NONBLOCK})),
ApplyVec<SocketKind>(IPv4TCPUnboundSocket,
AllBitwiseCombinations(List<int>{SOCK_STREAM},
List<int>{0,
SOCK_NONBLOCK})),
ApplyVec<SocketKind>(IPv6TCPUnboundSocket,
AllBitwiseCombinations(List<int>{SOCK_STREAM},
List<int>{
0, SOCK_NONBLOCK}))))));
} // namespace testing
} // namespace gvisor
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