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// Copyright 2018 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 <stdio.h>
#include <sys/un.h>
#include <algorithm>
#include <vector>
#include "gtest/gtest.h"
#include "test/syscalls/linux/socket_test_util.h"
#include "test/syscalls/linux/unix_domain_socket_test_util.h"
#include "test/util/file_descriptor.h"
#include "test/util/test_util.h"
namespace gvisor {
namespace testing {
namespace {
TEST_P(AllSocketPairTest, BoundSenderAddrCoalesced) {
auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair());
ASSERT_THAT(bind(sockets->first_fd(), sockets->first_addr(),
sockets->first_addr_size()),
SyscallSucceeds());
ASSERT_THAT(listen(sockets->first_fd(), 5), SyscallSucceeds());
ASSERT_THAT(connect(sockets->second_fd(), sockets->first_addr(),
sockets->first_addr_size()),
SyscallSucceeds());
int accepted = -1;
ASSERT_THAT(accepted = accept(sockets->first_fd(), nullptr, nullptr),
SyscallSucceeds());
FileDescriptor closer(accepted);
int i = 0;
ASSERT_THAT(RetryEINTR(send)(sockets->second_fd(), &i, sizeof(i), 0),
SyscallSucceedsWithValue(sizeof(i)));
ASSERT_THAT(bind(sockets->second_fd(), sockets->second_addr(),
sockets->second_addr_size()),
SyscallSucceeds());
i = 0;
ASSERT_THAT(RetryEINTR(send)(sockets->second_fd(), &i, sizeof(i), 0),
SyscallSucceedsWithValue(sizeof(i)));
int ri[2] = {0, 0};
struct sockaddr_storage addr;
socklen_t addr_len = sizeof(addr);
ASSERT_THAT(
RetryEINTR(recvfrom)(accepted, ri, sizeof(ri), 0,
reinterpret_cast<sockaddr*>(&addr), &addr_len),
SyscallSucceedsWithValue(sizeof(ri)));
EXPECT_EQ(addr_len, sockets->second_addr_len());
EXPECT_EQ(
memcmp(&addr, sockets->second_addr(),
std::min((size_t)addr_len, (size_t)sockets->second_addr_len())),
0);
}
INSTANTIATE_TEST_SUITE_P(
AllUnixDomainSockets, AllSocketPairTest,
::testing::ValuesIn(VecCat<SocketPairKind>(
ApplyVec<SocketPairKind>(FilesystemUnboundUnixDomainSocketPair,
AllBitwiseCombinations(List<int>{SOCK_STREAM},
List<int>{
0, SOCK_NONBLOCK})),
ApplyVec<SocketPairKind>(
AbstractUnboundUnixDomainSocketPair,
AllBitwiseCombinations(List<int>{SOCK_STREAM},
List<int>{0, SOCK_NONBLOCK})))));
} // namespace
} // namespace testing
} // namespace gvisor
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