184 lines
7.0 KiB
C++
184 lines
7.0 KiB
C++
// Copyright 2018 The gVisor Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include <stdio.h>
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#include <sys/socket.h>
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#include <sys/un.h>
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#include "gtest/gtest.h"
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#include "test/syscalls/linux/socket_test_util.h"
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#include "test/syscalls/linux/unix_domain_socket_test_util.h"
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#include "test/util/test_util.h"
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namespace gvisor {
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namespace testing {
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namespace {
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// Test fixture for tests that apply to pairs of unbound dgram unix sockets.
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using UnboundDgramUnixSocketPairTest = SocketPairTest;
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TEST_P(UnboundDgramUnixSocketPairTest, BindConnect) {
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auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair());
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ASSERT_THAT(bind(sockets->first_fd(), sockets->first_addr(),
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sockets->first_addr_size()),
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SyscallSucceeds());
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ASSERT_THAT(connect(sockets->second_fd(), sockets->first_addr(),
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sockets->first_addr_size()),
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SyscallSucceeds());
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}
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TEST_P(UnboundDgramUnixSocketPairTest, SelfConnect) {
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auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair());
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ASSERT_THAT(bind(sockets->first_fd(), sockets->first_addr(),
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sockets->first_addr_size()),
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SyscallSucceeds());
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ASSERT_THAT(connect(sockets->first_fd(), sockets->first_addr(),
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sockets->first_addr_size()),
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SyscallSucceeds());
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}
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TEST_P(UnboundDgramUnixSocketPairTest, DoubleConnect) {
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auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair());
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ASSERT_THAT(bind(sockets->first_fd(), sockets->first_addr(),
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sockets->first_addr_size()),
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SyscallSucceeds());
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ASSERT_THAT(connect(sockets->second_fd(), sockets->first_addr(),
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sockets->first_addr_size()),
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SyscallSucceeds());
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ASSERT_THAT(connect(sockets->second_fd(), sockets->first_addr(),
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sockets->first_addr_size()),
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SyscallSucceeds());
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}
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TEST_P(UnboundDgramUnixSocketPairTest, GetRemoteAddress) {
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auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair());
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ASSERT_THAT(bind(sockets->first_fd(), sockets->first_addr(),
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sockets->first_addr_size()),
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SyscallSucceeds());
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ASSERT_THAT(connect(sockets->second_fd(), sockets->first_addr(),
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sockets->first_addr_size()),
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SyscallSucceeds());
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socklen_t addressLength = sockets->first_addr_size();
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struct sockaddr_storage address = {};
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ASSERT_THAT(getpeername(sockets->second_fd(), (struct sockaddr*)(&address),
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&addressLength),
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SyscallSucceeds());
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EXPECT_EQ(
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0, memcmp(&address, sockets->first_addr(), sockets->first_addr_size()));
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}
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TEST_P(UnboundDgramUnixSocketPairTest, Sendto) {
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auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair());
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ASSERT_THAT(bind(sockets->first_fd(), sockets->first_addr(),
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sockets->first_addr_size()),
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SyscallSucceeds());
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char sent_data[20];
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RandomizeBuffer(sent_data, sizeof(sent_data));
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ASSERT_THAT(sendto(sockets->second_fd(), sent_data, sizeof(sent_data), 0,
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sockets->first_addr(), sockets->first_addr_size()),
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SyscallSucceedsWithValue(sizeof(sent_data)));
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char received_data[sizeof(sent_data)];
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ASSERT_THAT(ReadFd(sockets->first_fd(), received_data, sizeof(received_data)),
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SyscallSucceedsWithValue(sizeof(received_data)));
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EXPECT_EQ(0, memcmp(sent_data, received_data, sizeof(received_data)));
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}
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TEST_P(UnboundDgramUnixSocketPairTest, ZeroWriteAllowed) {
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auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair());
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ASSERT_THAT(bind(sockets->first_fd(), sockets->first_addr(),
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sockets->first_addr_size()),
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SyscallSucceeds());
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ASSERT_THAT(connect(sockets->second_fd(), sockets->first_addr(),
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sockets->first_addr_size()),
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SyscallSucceeds());
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char sent_data[3];
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// Send a zero length packet.
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ASSERT_THAT(write(sockets->second_fd(), sent_data, 0),
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SyscallSucceedsWithValue(0));
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// Receive the packet.
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char received_data[sizeof(sent_data)];
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ASSERT_THAT(read(sockets->first_fd(), received_data, sizeof(received_data)),
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SyscallSucceedsWithValue(0));
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}
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TEST_P(UnboundDgramUnixSocketPairTest, Listen) {
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auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair());
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ASSERT_THAT(listen(sockets->first_fd(), 0), SyscallFailsWithErrno(ENOTSUP));
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}
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TEST_P(UnboundDgramUnixSocketPairTest, Accept) {
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auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair());
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ASSERT_THAT(accept(sockets->first_fd(), nullptr, nullptr),
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SyscallFailsWithErrno(ENOTSUP));
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}
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TEST_P(UnboundDgramUnixSocketPairTest, SendtoWithoutConnect) {
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auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair());
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ASSERT_THAT(bind(sockets->first_fd(), sockets->first_addr(),
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sockets->first_addr_size()),
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SyscallSucceeds());
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char data = 'a';
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ASSERT_THAT(
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RetryEINTR(sendto)(sockets->second_fd(), &data, sizeof(data), 0,
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sockets->first_addr(), sockets->first_addr_size()),
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SyscallSucceedsWithValue(sizeof(data)));
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}
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TEST_P(UnboundDgramUnixSocketPairTest, SendtoWithoutConnectPassCreds) {
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auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair());
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ASSERT_THAT(bind(sockets->first_fd(), sockets->first_addr(),
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sockets->first_addr_size()),
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SyscallSucceeds());
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SetSoPassCred(sockets->first_fd());
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char data = 'a';
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ASSERT_THAT(
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RetryEINTR(sendto)(sockets->second_fd(), &data, sizeof(data), 0,
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sockets->first_addr(), sockets->first_addr_size()),
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SyscallSucceedsWithValue(sizeof(data)));
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ucred creds;
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creds.pid = -1;
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char buf[sizeof(data) + 1];
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ASSERT_NO_FATAL_FAILURE(
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RecvCreds(sockets->first_fd(), &creds, buf, sizeof(buf), sizeof(data)));
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EXPECT_EQ(0, memcmp(&data, buf, sizeof(data)));
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EXPECT_THAT(getpid(), SyscallSucceedsWithValue(creds.pid));
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}
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INSTANTIATE_TEST_SUITE_P(
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AllUnixDomainSockets, UnboundDgramUnixSocketPairTest,
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::testing::ValuesIn(VecCat<SocketPairKind>(
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ApplyVec<SocketPairKind>(FilesystemUnboundUnixDomainSocketPair,
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AllBitwiseCombinations(List<int>{SOCK_DGRAM},
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List<int>{
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0, SOCK_NONBLOCK})),
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ApplyVec<SocketPairKind>(
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AbstractUnboundUnixDomainSocketPair,
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AllBitwiseCombinations(List<int>{SOCK_DGRAM},
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List<int>{0, SOCK_NONBLOCK})))));
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} // namespace
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} // namespace testing
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} // namespace gvisor
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