1/*
2 * Copyright (C) 2015 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#include <errno.h>
18#include <fcntl.h>
19#include <signal.h>
20#include <sys/socket.h>
21
22#include <string>
23
24#include <gtest/gtest.h>
25
26#include "adb_io.h"
27#include "fuse_adb_provider.h"
28
29TEST(fuse_adb_provider, read_block_adb) {
30  adb_data data = {};
31  int sockets[2];
32
33  ASSERT_EQ(0, socketpair(AF_UNIX, SOCK_STREAM, 0, sockets));
34  data.sfd = sockets[0];
35
36  int host_socket = sockets[1];
37  fcntl(host_socket, F_SETFL, O_NONBLOCK);
38
39  const char expected_data[] = "foobar";
40  char block_data[sizeof(expected_data)] = {};
41
42  // If we write the result of read_block_adb's request before the request is
43  // actually made we can avoid needing an extra thread for this test.
44  ASSERT_TRUE(WriteFdExactly(host_socket, expected_data,
45                             strlen(expected_data)));
46
47  uint32_t block = 1234U;
48  const char expected_block[] = "00001234";
49  ASSERT_EQ(0, read_block_adb(data, block, reinterpret_cast<uint8_t*>(block_data),
50                              sizeof(expected_data) - 1));
51
52  // Check that read_block_adb requested the right block.
53  char block_req[sizeof(expected_block)] = {};
54  ASSERT_TRUE(ReadFdExactly(host_socket, block_req, 8));
55  ASSERT_EQ(0, block_req[8]);
56  ASSERT_EQ(8U, strlen(block_req));
57  ASSERT_STREQ(expected_block, block_req);
58
59  // Check that read_block_adb returned the right data.
60  ASSERT_EQ(0, block_req[8]);
61  ASSERT_STREQ(expected_data, block_data);
62
63  // Check that nothing else was written to the socket.
64  char tmp;
65  errno = 0;
66  ASSERT_EQ(-1, read(host_socket, &tmp, 1));
67  ASSERT_EQ(EWOULDBLOCK, errno);
68
69  close(sockets[0]);
70  close(sockets[1]);
71}
72
73TEST(fuse_adb_provider, read_block_adb_fail_write) {
74  adb_data data = {};
75  int sockets[2];
76
77  ASSERT_EQ(0, socketpair(AF_UNIX, SOCK_STREAM, 0, sockets));
78  data.sfd = sockets[0];
79
80  ASSERT_EQ(0, close(sockets[1]));
81
82  // write(2) raises SIGPIPE since the reading end has been closed. Ignore the signal to avoid
83  // failing the test.
84  signal(SIGPIPE, SIG_IGN);
85
86  char buf[1];
87  ASSERT_EQ(-EIO, read_block_adb(data, 0, reinterpret_cast<uint8_t*>(buf), 1));
88
89  close(sockets[0]);
90}
91