52bd37e633
files.[h|cpp] is bound to be abused with junk, replace with
android_get_control_file.[h|cpp]. Plus some sundry cleanup.
Test: gTest libcutils-tests, logd-unit-tests, liblog-unit-tests,
logcat-unit-tests and init_tests
Bug: 32450474
Change-Id: Ibd4a7aa4624ea19a43d1f98a3c71ac37805d36b5
105 lines
3.2 KiB
C++
105 lines
3.2 KiB
C++
/*
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* Copyright (C) 2015 The Android Open Source Project
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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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*/
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#include "util.h"
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#include <ctype.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <stdlib.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include <android-base/stringprintf.h>
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#include <android-base/test_utils.h>
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#include <cutils/android_get_control_file.h>
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#include <gtest/gtest.h>
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#include <selinux/android.h>
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TEST(util, read_file_ENOENT) {
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std::string s("hello");
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errno = 0;
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EXPECT_FALSE(read_file("/proc/does-not-exist", &s));
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EXPECT_EQ(ENOENT, errno);
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EXPECT_EQ("", s); // s was cleared.
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}
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TEST(util, read_file_success) {
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std::string s("hello");
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EXPECT_TRUE(read_file("/proc/version", &s));
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EXPECT_GT(s.length(), 6U);
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EXPECT_EQ('\n', s[s.length() - 1]);
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s[5] = 0;
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EXPECT_STREQ("Linux", s.c_str());
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}
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TEST(util, decode_uid) {
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EXPECT_EQ(0U, decode_uid("root"));
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EXPECT_EQ(UINT_MAX, decode_uid("toot"));
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EXPECT_EQ(123U, decode_uid("123"));
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}
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struct selabel_handle *sehandle;
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TEST(util, create_file) {
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if (!sehandle) sehandle = selinux_android_file_context_handle();
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TemporaryFile tf;
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close(tf.fd);
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EXPECT_GE(unlink(tf.path), 0);
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std::string key(ANDROID_FILE_ENV_PREFIX);
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key += tf.path;
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std::for_each(key.begin(), key.end(), [] (char& c) { c = isalnum(c) ? c : '_'; });
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EXPECT_EQ(unsetenv(key.c_str()), 0);
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uid_t uid = decode_uid("logd");
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gid_t gid = decode_uid("system");
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mode_t perms = S_IRWXU | S_IWGRP | S_IRGRP | S_IROTH;
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static const char context[] = "u:object_r:misc_logd_file:s0";
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EXPECT_GE(tf.fd = create_file(tf.path, O_RDWR | O_CREAT, perms, uid, gid, context), 0);
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if (tf.fd < 0) return;
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static const char hello[] = "hello world\n";
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static const ssize_t len = strlen(hello);
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EXPECT_EQ(write(tf.fd, hello, len), len);
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char buffer[sizeof(hello) + 1];
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memset(buffer, 0, sizeof(buffer));
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EXPECT_GE(lseek(tf.fd, 0, SEEK_SET), 0);
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EXPECT_EQ(read(tf.fd, buffer, sizeof(buffer)), len);
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EXPECT_EQ(std::string(hello), buffer);
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EXPECT_EQ(android_get_control_file(tf.path), -1);
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EXPECT_EQ(setenv(key.c_str(), android::base::StringPrintf("%d", tf.fd).c_str(), true), 0);
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EXPECT_EQ(android_get_control_file(tf.path), tf.fd);
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close(tf.fd);
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EXPECT_EQ(android_get_control_file(tf.path), -1);
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EXPECT_EQ(unsetenv(key.c_str()), 0);
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struct stat st;
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EXPECT_EQ(stat(tf.path, &st), 0);
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EXPECT_EQ(st.st_mode & (S_IRWXU | S_IRWXG | S_IRWXO), perms);
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EXPECT_EQ(st.st_uid, uid);
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EXPECT_EQ(st.st_gid, gid);
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security_context_t con;
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EXPECT_GE(getfilecon(tf.path, &con), 0);
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EXPECT_NE(con, static_cast<security_context_t>(NULL));
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if (con) {
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EXPECT_EQ(context, std::string(con));
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}
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freecon(con);
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EXPECT_EQ(unlink(tf.path), 0);
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}
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