138 lines
4.2 KiB
C++
138 lines
4.2 KiB
C++
// Copyright 2019 The Crashpad 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 "util/linux/socket.h"
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#include "base/posix/eintr_wrapper.h"
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#include "gtest/gtest.h"
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#include "util/linux/socket.h"
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namespace crashpad {
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namespace test {
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namespace {
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TEST(Socket, Credentials) {
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ScopedFileHandle send_sock, recv_sock;
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ASSERT_TRUE(
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UnixCredentialSocket::CreateCredentialSocketpair(&send_sock, &recv_sock));
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char msg = 42;
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ASSERT_EQ(UnixCredentialSocket::SendMsg(send_sock.get(), &msg, sizeof(msg)),
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0);
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char recv_msg = 0;
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ucred creds;
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ASSERT_TRUE(UnixCredentialSocket::RecvMsg(
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recv_sock.get(), &recv_msg, sizeof(recv_msg), &creds));
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EXPECT_EQ(recv_msg, msg);
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EXPECT_EQ(creds.pid, getpid());
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EXPECT_EQ(creds.uid, geteuid());
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EXPECT_EQ(creds.gid, getegid());
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}
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TEST(Socket, EmptyMessages) {
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ScopedFileHandle send_sock, recv_sock;
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ASSERT_TRUE(
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UnixCredentialSocket::CreateCredentialSocketpair(&send_sock, &recv_sock));
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ASSERT_EQ(UnixCredentialSocket::SendMsg(send_sock.get(), nullptr, 0), 0);
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ucred creds;
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ASSERT_TRUE(
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UnixCredentialSocket::RecvMsg(recv_sock.get(), nullptr, 0, &creds));
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EXPECT_EQ(creds.pid, getpid());
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EXPECT_EQ(creds.uid, geteuid());
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EXPECT_EQ(creds.gid, getegid());
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}
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TEST(Socket, Hangup) {
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ScopedFileHandle send_sock, recv_sock;
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ASSERT_TRUE(
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UnixCredentialSocket::CreateCredentialSocketpair(&send_sock, &recv_sock));
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send_sock.reset();
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char recv_msg = 0;
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ucred creds;
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EXPECT_FALSE(UnixCredentialSocket::RecvMsg(
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recv_sock.get(), &recv_msg, sizeof(recv_msg), &creds));
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}
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TEST(Socket, FileDescriptors) {
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ScopedFileHandle send_sock, recv_sock;
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ASSERT_TRUE(
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UnixCredentialSocket::CreateCredentialSocketpair(&send_sock, &recv_sock));
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ScopedFileHandle test_fd1, test_fd2;
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ASSERT_TRUE(
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UnixCredentialSocket::CreateCredentialSocketpair(&test_fd1, &test_fd2));
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char msg = 42;
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ASSERT_EQ(UnixCredentialSocket::SendMsg(
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send_sock.get(), &msg, sizeof(msg), &test_fd1.get(), 1),
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0);
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char recv_msg = 0;
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ucred creds;
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std::vector<ScopedFileHandle> fds;
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ASSERT_TRUE(UnixCredentialSocket::RecvMsg(
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recv_sock.get(), &recv_msg, sizeof(recv_msg), &creds, &fds));
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ASSERT_EQ(fds.size(), 1u);
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}
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TEST(Socket, RecvClosesFileDescriptors) {
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ScopedFileHandle send_sock, recv_sock;
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ASSERT_TRUE(
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UnixCredentialSocket::CreateCredentialSocketpair(&send_sock, &recv_sock));
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ScopedFileHandle send_fds[UnixCredentialSocket::kMaxSendRecvMsgFDs];
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ScopedFileHandle recv_fds[UnixCredentialSocket::kMaxSendRecvMsgFDs];
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int raw_recv_fds[UnixCredentialSocket::kMaxSendRecvMsgFDs];
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for (size_t index = 0; index < UnixCredentialSocket::kMaxSendRecvMsgFDs;
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++index) {
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ASSERT_TRUE(UnixCredentialSocket::CreateCredentialSocketpair(
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&send_fds[index], &recv_fds[index]));
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raw_recv_fds[index] = recv_fds[index].get();
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}
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char msg = 42;
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ASSERT_EQ(
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UnixCredentialSocket::SendMsg(send_sock.get(),
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&msg,
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sizeof(msg),
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raw_recv_fds,
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UnixCredentialSocket::kMaxSendRecvMsgFDs),
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0);
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char recv_msg = 0;
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ucred creds;
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ASSERT_TRUE(UnixCredentialSocket::RecvMsg(
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recv_sock.get(), &recv_msg, sizeof(recv_msg), &creds));
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EXPECT_EQ(creds.pid, getpid());
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for (size_t index = 0; index < UnixCredentialSocket::kMaxSendRecvMsgFDs;
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++index) {
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recv_fds[index].reset();
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char c;
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EXPECT_EQ(
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HANDLE_EINTR(send(send_fds[index].get(), &c, sizeof(c), MSG_NOSIGNAL)),
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-1);
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EXPECT_EQ(errno, EPIPE);
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}
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}
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} // namespace
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} // namespace test
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} // namespace crashpad
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