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/*
* 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 <gtest/gtest.h>
#include <memory>
#include <android-base/file.h>
#include <android-base/logging.h>
#include <android-base/test_utils.h>
#include <ziparchive/zip_archive.h>
#if defined(__ANDROID__)
#include <sys/system_properties.h>
#endif
#include "get_test_data.h"
#include "read_elf.h"
#include "utils.h"
static std::string testdata_dir;
#if defined(__ANDROID__)
static const std::string testdata_section = ".testzipdata";
static bool ExtractTestDataFromElfSection() {
if (!MkdirWithParents(testdata_dir)) {
PLOG(ERROR) << "failed to create testdata_dir " << testdata_dir;
return false;
}
std::string content;
ElfStatus result = ReadSectionFromElfFile("/proc/self/exe", testdata_section, &content);
if (result != ElfStatus::NO_ERROR) {
LOG(ERROR) << "failed to read section " << testdata_section
<< ": " << result;
return false;
}
TemporaryFile tmp_file;
if (!android::base::WriteStringToFile(content, tmp_file.path)) {
PLOG(ERROR) << "failed to write file " << tmp_file.path;
return false;
}
ArchiveHelper ahelper(tmp_file.fd, tmp_file.path);
if (!ahelper) {
LOG(ERROR) << "failed to open archive " << tmp_file.path;
return false;
}
ZipArchiveHandle& handle = ahelper.archive_handle();
void* cookie;
int ret = StartIteration(handle, &cookie, nullptr, nullptr);
if (ret != 0) {
LOG(ERROR) << "failed to start iterating zip entries";
return false;
}
std::unique_ptr<void, decltype(&EndIteration)> guard(cookie, EndIteration);
ZipEntry entry;
ZipString name;
while (Next(cookie, &entry, &name) == 0) {
std::string entry_name(name.name, name.name + name.name_length);
std::string path = testdata_dir + entry_name;
// Skip dir.
if (path.back() == '/') {
continue;
}
if (!MkdirWithParents(path)) {
LOG(ERROR) << "failed to create dir for " << path;
return false;
}
FileHelper fhelper = FileHelper::OpenWriteOnly(path);
if (!fhelper) {
PLOG(ERROR) << "failed to create file " << path;
return false;
}
std::vector<uint8_t> data(entry.uncompressed_length);
if (ExtractToMemory(handle, &entry, data.data(), data.size()) != 0) {
LOG(ERROR) << "failed to extract entry " << entry_name;
return false;
}
if (!android::base::WriteFully(fhelper.fd(), data.data(), data.size())) {
LOG(ERROR) << "failed to write file " << path;
return false;
}
}
return true;
}
class SavedPerfHardenProperty {
public:
SavedPerfHardenProperty() {
__system_property_get("security.perf_harden", prop_value_);
if (!android::base::ReadFileToString("/proc/sys/kernel/perf_event_paranoid",
¶noid_value_)) {
PLOG(ERROR) << "failed to read /proc/sys/kernel/perf_event_paranoid";
}
}
~SavedPerfHardenProperty() {
if (strlen(prop_value_) != 0) {
__system_property_set("security.perf_harden", prop_value_);
// Sleep one second to wait for security.perf_harden changing
// /proc/sys/kernel/perf_event_paranoid.
sleep(1);
std::string paranoid_value;
if (!android::base::ReadFileToString("/proc/sys/kernel/perf_event_paranoid",
¶noid_value)) {
PLOG(ERROR) << "failed to read /proc/sys/kernel/perf_event_paranoid";
return;
}
if (paranoid_value_ != paranoid_value) {
LOG(ERROR) << "failed to restore /proc/sys/kernel/perf_event_paranoid";
}
}
}
private:
char prop_value_[PROP_VALUE_MAX];
std::string paranoid_value_;
};
#endif // defined(__ANDROID__)
int main(int argc, char** argv) {
InitLogging(argv, android::base::StderrLogger);
testing::InitGoogleTest(&argc, argv);
android::base::LogSeverity log_severity = android::base::WARNING;
for (int i = 1; i < argc; ++i) {
if (strcmp(argv[i], "-t") == 0 && i + 1 < argc) {
testdata_dir = argv[i + 1];
i++;
} else if (strcmp(argv[i], "--log") == 0) {
if (i + 1 < argc) {
++i;
if (!GetLogSeverity(argv[i], &log_severity)) {
LOG(ERROR) << "Unknown log severity: " << argv[i];
return 1;
}
} else {
LOG(ERROR) << "Missing argument for --log option.\n";
return 1;
}
}
}
android::base::ScopedLogSeverity severity(log_severity);
#if defined(__ANDROID__)
std::unique_ptr<TemporaryDir> tmp_dir;
if (!::testing::GTEST_FLAG(list_tests) && testdata_dir.empty()) {
tmp_dir.reset(new TemporaryDir);
testdata_dir = std::string(tmp_dir->path) + "/";
if (!ExtractTestDataFromElfSection()) {
LOG(ERROR) << "failed to extract test data from elf section";
return 1;
}
}
// A cts test PerfEventParanoidTest.java is testing if
// /proc/sys/kernel/perf_event_paranoid is 3, so restore perf_harden
// value after current test to not break that test.
SavedPerfHardenProperty saved_perf_harden;
#endif
if (!::testing::GTEST_FLAG(list_tests) && testdata_dir.empty()) {
printf("Usage: %s -t <testdata_dir>\n", argv[0]);
return 1;
}
if (testdata_dir.back() != '/') {
testdata_dir.push_back('/');
}
LOG(INFO) << "testdata is in " << testdata_dir;
return RUN_ALL_TESTS();
}
std::string GetTestData(const std::string& filename) {
return testdata_dir + filename;
}
const std::string& GetTestDataDir() {
return testdata_dir;
}
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