| /* |
| * 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/stringprintf.h> |
| #include <android-base/test_utils.h> |
| #include <gtest/gtest.h> |
| |
| TEST(util, read_file_ENOENT) { |
| std::string s("hello"); |
| errno = 0; |
| EXPECT_FALSE(read_file("/proc/does-not-exist", &s)); |
| EXPECT_EQ(ENOENT, errno); |
| EXPECT_EQ("", s); // s was cleared. |
| } |
| |
| TEST(util, read_file_group_writeable) { |
| std::string s("hello"); |
| TemporaryFile tf; |
| ASSERT_TRUE(tf.fd != -1); |
| EXPECT_TRUE(write_file(tf.path, s)) << strerror(errno); |
| EXPECT_NE(-1, fchmodat(AT_FDCWD, tf.path, 0620, AT_SYMLINK_NOFOLLOW)) << strerror(errno); |
| EXPECT_FALSE(read_file(tf.path, &s)) << strerror(errno); |
| EXPECT_EQ("", s); // s was cleared. |
| } |
| |
| TEST(util, read_file_world_writeable) { |
| std::string s("hello"); |
| TemporaryFile tf; |
| ASSERT_TRUE(tf.fd != -1); |
| EXPECT_TRUE(write_file(tf.path, s.c_str())) << strerror(errno); |
| EXPECT_NE(-1, fchmodat(AT_FDCWD, tf.path, 0602, AT_SYMLINK_NOFOLLOW)) << strerror(errno); |
| EXPECT_FALSE(read_file(tf.path, &s)) << strerror(errno); |
| EXPECT_EQ("", s); // s was cleared. |
| } |
| |
| TEST(util, read_file_symbolic_link) { |
| std::string s("hello"); |
| errno = 0; |
| // lrwxrwxrwx 1 root root 13 1970-01-01 00:00 charger -> /sbin/healthd |
| EXPECT_FALSE(read_file("/charger", &s)); |
| EXPECT_EQ(ELOOP, errno); |
| EXPECT_EQ("", s); // s was cleared. |
| } |
| |
| TEST(util, read_file_success) { |
| std::string s("hello"); |
| EXPECT_TRUE(read_file("/proc/version", &s)); |
| EXPECT_GT(s.length(), 6U); |
| EXPECT_EQ('\n', s[s.length() - 1]); |
| s[5] = 0; |
| EXPECT_STREQ("Linux", s.c_str()); |
| } |
| |
| TEST(util, write_file_binary) { |
| 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(write_file(tf.path, contents)) << strerror(errno); |
| |
| std::string read_back_contents; |
| EXPECT_TRUE(read_file(tf.path, &read_back_contents)) << strerror(errno); |
| EXPECT_EQ(contents, read_back_contents); |
| EXPECT_EQ(10u, read_back_contents.size()); |
| } |
| |
| TEST(util, write_file_not_exist) { |
| std::string s("hello"); |
| std::string s2("hello"); |
| TemporaryDir test_dir; |
| std::string path = android::base::StringPrintf("%s/does-not-exist", test_dir.path); |
| EXPECT_TRUE(write_file(path, s)); |
| EXPECT_TRUE(read_file(path, &s2)); |
| EXPECT_EQ(s, s2); |
| 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, write_file_exist) { |
| std::string s2(""); |
| TemporaryFile tf; |
| ASSERT_TRUE(tf.fd != -1); |
| EXPECT_TRUE(write_file(tf.path, "1hello1")) << strerror(errno); |
| EXPECT_TRUE(read_file(tf.path, &s2)); |
| EXPECT_STREQ("1hello1", s2.c_str()); |
| EXPECT_TRUE(write_file(tf.path, "2ll2")); |
| EXPECT_TRUE(read_file(tf.path, &s2)); |
| EXPECT_STREQ("2ll2", s2.c_str()); |
| } |
| |
| TEST(util, decode_uid) { |
| EXPECT_EQ(0U, decode_uid("root")); |
| EXPECT_EQ(UINT_MAX, decode_uid("toot")); |
| EXPECT_EQ(123U, decode_uid("123")); |
| } |