platform_system_core/init/util_test.cpp
Jiyong Park 8fd64c8af1 Move result.h from init to libbase
The Result, Error, ErrnoError are quite generic. Moving them from init
to libbase so that they can be used from other places.

Bug: 132145659
Test: libbase_test
Change-Id: Id774a587f74380fadd7a0fc88c0aa892c3d9a489
2019-06-06 08:58:55 +09:00

173 lines
5.9 KiB
C++

/*
* Copyright (C) 2015 The Android Open Source Project
*
* 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 "util.h"
#include <errno.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <android-base/file.h>
#include <android-base/stringprintf.h>
#include <gtest/gtest.h>
using namespace std::literals::string_literals;
namespace android {
namespace init {
TEST(util, ReadFile_ENOENT) {
errno = 0;
auto file_contents = ReadFile("/proc/does-not-exist");
EXPECT_EQ(ENOENT, errno);
ASSERT_FALSE(file_contents);
EXPECT_EQ("open() failed: No such file or directory", file_contents.error().message());
}
TEST(util, ReadFileGroupWriteable) {
std::string s("hello");
TemporaryFile tf;
ASSERT_TRUE(tf.fd != -1);
EXPECT_TRUE(WriteFile(tf.path, s)) << strerror(errno);
EXPECT_NE(-1, fchmodat(AT_FDCWD, tf.path, 0620, AT_SYMLINK_NOFOLLOW)) << strerror(errno);
auto file_contents = ReadFile(tf.path);
ASSERT_FALSE(file_contents) << strerror(errno);
EXPECT_EQ("Skipping insecure file", file_contents.error().message());
}
TEST(util, ReadFileWorldWiteable) {
std::string s("hello");
TemporaryFile tf;
ASSERT_TRUE(tf.fd != -1);
EXPECT_TRUE(WriteFile(tf.path, s)) << strerror(errno);
EXPECT_NE(-1, fchmodat(AT_FDCWD, tf.path, 0602, AT_SYMLINK_NOFOLLOW)) << strerror(errno);
auto file_contents = ReadFile(tf.path);
ASSERT_FALSE(file_contents) << strerror(errno);
EXPECT_EQ("Skipping insecure file", file_contents.error().message());
}
TEST(util, ReadFileSymbolicLink) {
errno = 0;
// lrwxrwxrwx 1 root root 13 1970-01-01 00:00 charger -> /sbin/healthd
auto file_contents = ReadFile("/charger");
EXPECT_EQ(ELOOP, errno);
ASSERT_FALSE(file_contents);
EXPECT_EQ("open() failed: Too many symbolic links encountered",
file_contents.error().message());
}
TEST(util, ReadFileSuccess) {
auto file_contents = ReadFile("/proc/version");
ASSERT_TRUE(file_contents);
EXPECT_GT(file_contents->length(), 6U);
EXPECT_EQ('\n', file_contents->at(file_contents->length() - 1));
(*file_contents)[5] = 0;
EXPECT_STREQ("Linux", file_contents->c_str());
}
TEST(util, WriteFileBinary) {
std::string contents("abcd");
contents.push_back('\0');
contents.push_back('\0');
contents.append("dcba");
ASSERT_EQ(10u, contents.size());
TemporaryFile tf;
ASSERT_TRUE(tf.fd != -1);
EXPECT_TRUE(WriteFile(tf.path, contents)) << strerror(errno);
auto read_back_contents = ReadFile(tf.path);
ASSERT_TRUE(read_back_contents) << strerror(errno);
EXPECT_EQ(contents, *read_back_contents);
EXPECT_EQ(10u, read_back_contents->size());
}
TEST(util, WriteFileNotExist) {
std::string s("hello");
TemporaryDir test_dir;
std::string path = android::base::StringPrintf("%s/does-not-exist", test_dir.path);
EXPECT_TRUE(WriteFile(path, s));
auto file_contents = ReadFile(path);
ASSERT_TRUE(file_contents);
EXPECT_EQ(s, *file_contents);
struct stat sb;
int fd = open(path.c_str(), O_RDONLY | O_NOFOLLOW | O_CLOEXEC);
EXPECT_NE(-1, fd);
EXPECT_EQ(0, fstat(fd, &sb));
EXPECT_EQ((const unsigned int)(S_IRUSR | S_IWUSR), sb.st_mode & 0777);
EXPECT_EQ(0, unlink(path.c_str()));
}
TEST(util, WriteFileExist) {
TemporaryFile tf;
ASSERT_TRUE(tf.fd != -1);
EXPECT_TRUE(WriteFile(tf.path, "1hello1")) << strerror(errno);
auto file_contents = ReadFile(tf.path);
ASSERT_TRUE(file_contents);
EXPECT_EQ("1hello1", *file_contents);
EXPECT_TRUE(WriteFile(tf.path, "2ll2"));
file_contents = ReadFile(tf.path);
ASSERT_TRUE(file_contents);
EXPECT_EQ("2ll2", *file_contents);
}
TEST(util, DecodeUid) {
auto decoded_uid = DecodeUid("root");
EXPECT_TRUE(decoded_uid);
EXPECT_EQ(0U, *decoded_uid);
decoded_uid = DecodeUid("toot");
EXPECT_FALSE(decoded_uid);
EXPECT_EQ("getpwnam failed: No such file or directory", decoded_uid.error().message());
decoded_uid = DecodeUid("123");
EXPECT_TRUE(decoded_uid);
EXPECT_EQ(123U, *decoded_uid);
}
TEST(util, is_dir) {
TemporaryDir test_dir;
EXPECT_TRUE(is_dir(test_dir.path));
TemporaryFile tf;
EXPECT_FALSE(is_dir(tf.path));
}
TEST(util, mkdir_recursive) {
TemporaryDir test_dir;
std::string path = android::base::StringPrintf("%s/three/directories/deep", test_dir.path);
EXPECT_TRUE(mkdir_recursive(path, 0755));
std::string path1 = android::base::StringPrintf("%s/three", test_dir.path);
EXPECT_TRUE(is_dir(path1.c_str()));
std::string path2 = android::base::StringPrintf("%s/three/directories", test_dir.path);
EXPECT_TRUE(is_dir(path1.c_str()));
std::string path3 = android::base::StringPrintf("%s/three/directories/deep", test_dir.path);
EXPECT_TRUE(is_dir(path1.c_str()));
}
TEST(util, mkdir_recursive_extra_slashes) {
TemporaryDir test_dir;
std::string path = android::base::StringPrintf("%s/three////directories/deep//", test_dir.path);
EXPECT_TRUE(mkdir_recursive(path, 0755));
std::string path1 = android::base::StringPrintf("%s/three", test_dir.path);
EXPECT_TRUE(is_dir(path1.c_str()));
std::string path2 = android::base::StringPrintf("%s/three/directories", test_dir.path);
EXPECT_TRUE(is_dir(path1.c_str()));
std::string path3 = android::base::StringPrintf("%s/three/directories/deep", test_dir.path);
EXPECT_TRUE(is_dir(path1.c_str()));
}
} // namespace init
} // namespace android