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 <gtest/gtest.h>
18
19#include "sysdeps.h"
20
21#include <android-base/test_utils.h>
22
23TEST(sysdeps_win32, adb_getenv) {
24    // Insert all test env vars before first call to adb_getenv() which will
25    // read the env var block only once.
26    ASSERT_EQ(0, _putenv("SYSDEPS_WIN32_TEST_UPPERCASE=1"));
27    ASSERT_EQ(0, _putenv("sysdeps_win32_test_lowercase=2"));
28    ASSERT_EQ(0, _putenv("Sysdeps_Win32_Test_MixedCase=3"));
29
30    // UTF-16 value
31    ASSERT_EQ(0, _wputenv(L"SYSDEPS_WIN32_TEST_UNICODE=\u00a1\u0048\u006f\u006c"
32                          L"\u0061\u0021\u03b1\u03b2\u03b3\u0061\u006d\u0062"
33                          L"\u0075\u006c\u014d\u043f\u0440\u0438\u0432\u0435"
34                          L"\u0442"));
35
36    // Search for non-existant env vars.
37    EXPECT_STREQ(nullptr, adb_getenv("SYSDEPS_WIN32_TEST_NONEXISTANT"));
38
39    // Search for existing env vars.
40
41    // There is no test for an env var with a value of a zero-length string
42    // because _putenv() does not support inserting such an env var.
43
44    // Search for env var that is uppercase.
45    EXPECT_STREQ("1", adb_getenv("SYSDEPS_WIN32_TEST_UPPERCASE"));
46    EXPECT_STREQ("1", adb_getenv("sysdeps_win32_test_uppercase"));
47    EXPECT_STREQ("1", adb_getenv("Sysdeps_Win32_Test_Uppercase"));
48
49    // Search for env var that is lowercase.
50    EXPECT_STREQ("2", adb_getenv("SYSDEPS_WIN32_TEST_LOWERCASE"));
51    EXPECT_STREQ("2", adb_getenv("sysdeps_win32_test_lowercase"));
52    EXPECT_STREQ("2", adb_getenv("Sysdeps_Win32_Test_Lowercase"));
53
54    // Search for env var that is mixed-case.
55    EXPECT_STREQ("3", adb_getenv("SYSDEPS_WIN32_TEST_MIXEDCASE"));
56    EXPECT_STREQ("3", adb_getenv("sysdeps_win32_test_mixedcase"));
57    EXPECT_STREQ("3", adb_getenv("Sysdeps_Win32_Test_MixedCase"));
58
59    // Check that UTF-16 was converted to UTF-8.
60    EXPECT_STREQ("\xc2\xa1\x48\x6f\x6c\x61\x21\xce\xb1\xce\xb2\xce\xb3\x61\x6d"
61                 "\x62\x75\x6c\xc5\x8d\xd0\xbf\xd1\x80\xd0\xb8\xd0\xb2\xd0\xb5"
62                 "\xd1\x82",
63                 adb_getenv("SYSDEPS_WIN32_TEST_UNICODE"));
64
65    // Check an env var that should always be set.
66    const char* path_val = adb_getenv("PATH");
67    EXPECT_NE(nullptr, path_val);
68    if (path_val != nullptr) {
69        EXPECT_GT(strlen(path_val), 0U);
70    }
71}
72
73TEST(sysdeps_win32, unix_isatty) {
74    // stdin and stdout should be consoles. Use CONIN$ and CONOUT$ special files
75    // so that we can test this even if stdin/stdout have been redirected. Read
76    // permissions are required for unix_isatty().
77    int conin_fd = unix_open("CONIN$", O_RDONLY);
78    int conout_fd = unix_open("CONOUT$", O_RDWR);
79    for (const int fd : {conin_fd, conout_fd}) {
80        EXPECT_TRUE(fd >= 0);
81        EXPECT_EQ(1, unix_isatty(fd));
82        EXPECT_EQ(0, unix_close(fd));
83    }
84
85    // nul returns 1 from isatty(), make sure unix_isatty() corrects that.
86    for (auto flags : {O_RDONLY, O_RDWR}) {
87        int nul_fd = unix_open("nul", flags);
88        EXPECT_TRUE(nul_fd >= 0);
89        EXPECT_EQ(0, unix_isatty(nul_fd));
90        EXPECT_EQ(0, unix_close(nul_fd));
91    }
92
93    // Check a real file, both read-write and read-only.
94    TemporaryFile temp_file;
95    EXPECT_TRUE(temp_file.fd >= 0);
96    EXPECT_EQ(0, unix_isatty(temp_file.fd));
97
98    int temp_file_ro_fd = unix_open(temp_file.path, O_RDONLY);
99    EXPECT_TRUE(temp_file_ro_fd >= 0);
100    EXPECT_EQ(0, unix_isatty(temp_file_ro_fd));
101    EXPECT_EQ(0, unix_close(temp_file_ro_fd));
102
103    // Check a real OS pipe.
104    int pipe_fds[2];
105    EXPECT_EQ(0, _pipe(pipe_fds, 64, _O_BINARY));
106    EXPECT_EQ(0, unix_isatty(pipe_fds[0]));
107    EXPECT_EQ(0, unix_isatty(pipe_fds[1]));
108    EXPECT_EQ(0, _close(pipe_fds[0]));
109    EXPECT_EQ(0, _close(pipe_fds[1]));
110
111    // Make sure an invalid FD is handled correctly.
112    EXPECT_EQ(0, unix_isatty(-1));
113}
114
115void TestParseCompleteUTF8(const char* buf, const size_t buf_size,
116                           const size_t expected_complete_bytes,
117                           const std::vector<char>& expected_remaining_bytes) {
118    std::vector<char> remaining_bytes;
119    const size_t complete_bytes = internal::ParseCompleteUTF8(buf, buf + buf_size,
120                                                              &remaining_bytes);
121    EXPECT_EQ(expected_complete_bytes, complete_bytes);
122    EXPECT_EQ(expected_remaining_bytes, remaining_bytes);
123}
124
125TEST(sysdeps_win32, ParseCompleteUTF8) {
126    const std::vector<std::vector<char>> multi_byte_sequences = {
127        { '\xc2', '\xa9' },                 // 2 byte UTF-8 sequence
128        { '\xe1', '\xb4', '\xa8' },         // 3 byte UTF-8 sequence
129        { '\xf0', '\x9f', '\x98', '\x80' }, // 4 byte UTF-8 sequence
130    };
131    std::vector<std::vector<char>> all_sequences = {
132        {},                                 // 0 bytes
133        { '\0' },                           // NULL byte
134        { 'a' },                            // 1 byte UTF-8 sequence
135    };
136    all_sequences.insert(all_sequences.end(), multi_byte_sequences.begin(),
137                         multi_byte_sequences.end());
138
139    // Vary a prefix of bytes in front of the sequence that we're actually interested in parsing.
140    for (const auto& prefix : all_sequences) {
141        // Parse (prefix + one byte of the sequence at a time)
142        for (const auto& seq : multi_byte_sequences) {
143            std::vector<char> buffer(prefix);
144
145            // For every byte of the sequence except the last
146            for (size_t i = 0; i < seq.size() - 1; ++i) {
147                buffer.push_back(seq[i]);
148
149                // When parsing an incomplete UTF-8 sequence, the amount of the buffer preceding
150                // the start of the incomplete UTF-8 sequence is valid. The remaining bytes are the
151                // bytes of the incomplete UTF-8 sequence.
152                TestParseCompleteUTF8(buffer.data(), buffer.size(), prefix.size(),
153                                      std::vector<char>(seq.begin(), seq.begin() + i + 1));
154            }
155
156            // For the last byte of the sequence
157            buffer.push_back(seq.back());
158            TestParseCompleteUTF8(buffer.data(), buffer.size(), buffer.size(), std::vector<char>());
159        }
160
161        // Parse (prefix (aka sequence) + invalid trailing bytes) to verify that the invalid
162        // trailing bytes are immediately "returned" to prevent them from being stuck in some
163        // buffer.
164        std::vector<char> buffer(prefix);
165        for (size_t i = 0; i < 8; ++i) {
166            buffer.push_back(0x80); // trailing byte
167            TestParseCompleteUTF8(buffer.data(), buffer.size(), buffer.size(), std::vector<char>());
168        }
169    }
170}
171