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// Copyright 2024 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/enterprise_companion/enterprise_companion.h"
#include <cstdint>
#include <memory>
#include <optional>
#include "base/at_exit.h"
#include "base/check.h"
#include "base/command_line.h"
#include "base/files/file_path.h"
#include "base/files/file_util.h"
#include "base/logging.h"
#include "base/process/process_handle.h"
#include "base/system/sys_info.h"
#include "base/task/single_thread_task_executor.h"
#include "base/task/thread_pool/thread_pool_instance.h"
#include "base/threading/platform_thread.h"
#include "build/build_config.h"
#include "build/buildflag.h"
#include "chrome/enterprise_companion/app/app.h"
#include "chrome/enterprise_companion/crash_client.h"
#include "chrome/enterprise_companion/enterprise_companion_client.h"
#include "chrome/enterprise_companion/enterprise_companion_status.h"
#include "chrome/enterprise_companion/enterprise_companion_version.h"
#include "chrome/enterprise_companion/flags.h"
#include "chrome/enterprise_companion/installer_paths.h"
#include "chrome/enterprise_companion/ipc_support.h"
#if BUILDFLAG(IS_WIN)
#include "base/strings/stringprintf.h"
#include "base/win/windows_version.h"
#endif
namespace enterprise_companion {
namespace {
constexpr int64_t kLogRotateAtSize = 1024 * 1024; // 1 MiB.
void InitLogging() {
base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
if (!command_line->HasSwitch(kLoggingModuleSwitch)) {
command_line->AppendSwitchASCII(kLoggingModuleSwitch,
kLoggingModuleSwitchValue);
}
logging::LoggingSettings settings{.logging_dest = logging::LOG_TO_STDERR};
std::optional<base::FilePath> log_file_path = GetLogFilePath();
if (!log_file_path) {
VLOG(1) << "Error getting log file path.";
} else {
base::CreateDirectory(log_file_path->DirName());
// Rotate the log if needed.
std::optional<int64_t> size = base::GetFileSize(*log_file_path);
if (size.has_value() && size.value() >= kLogRotateAtSize) {
base::ReplaceFile(*log_file_path,
log_file_path->AddExtension(FILE_PATH_LITERAL(".old")),
nullptr);
}
settings.log_file_path = log_file_path->value().c_str();
settings.logging_dest |= logging::LOG_TO_FILE;
}
logging::InitLogging(settings);
logging::SetLogItems(/*enable_process_id=*/true,
/*enable_thread_id=*/true,
/*enable_timestamp=*/true,
/*enable_tickcount=*/false);
}
void InitThreadPool() {
base::PlatformThread::SetName("EnterpriseCompanion");
base::ThreadPoolInstance::Create("EnterpriseCompanion");
// Reuses the logic in base::ThreadPoolInstance::StartWithDefaultParams.
const size_t max_num_foreground_threads =
static_cast<size_t>(std::max(3, base::SysInfo::NumberOfProcessors() - 1));
base::ThreadPoolInstance::InitParams init_params(max_num_foreground_threads);
base::ThreadPoolInstance::Get()->Start(init_params);
}
std::unique_ptr<App> CreateAppForCommandLine(base::CommandLine* command_line) {
if (command_line->HasSwitch(kShutdownSwitch)) {
return CreateAppShutdown();
}
if (command_line->HasSwitch(kFetchPoliciesSwitch)) {
return CreateAppFetchPolicies();
}
if (command_line->HasSwitch(kInstallSwitch)) {
return CreateAppInstall();
}
if (command_line->HasSwitch(kUninstallSwitch)) {
return CreateAppUninstall();
}
#if BUILDFLAG(IS_MAC)
if (command_line->HasSwitch(kNetWorkerSwitch)) {
return CreateAppNetWorker();
}
#endif
return CreateAppServer();
}
constexpr const char* BuildFlavor() {
#if defined(NDEBUG)
return "opt";
#else
return "debug";
#endif
}
constexpr const char* BuildArch() {
#if defined(ARCH_CPU_64_BITS)
return "64 bits";
#elif defined(ARCH_CPU_32_BITS)
return "32 bits";
#else
#error CPU architecture is unknown.
#endif
}
std::string OperatingSystemVersion() {
#if BUILDFLAG(IS_WIN)
const base::win::OSInfo::VersionNumber v =
base::win::OSInfo::GetInstance()->version_number();
return base::StringPrintf("%u.%u.%u.%u", v.major, v.minor, v.build, v.patch);
#else
return base::SysInfo().OperatingSystemVersion();
#endif
}
} // namespace
int EnterpriseCompanionMain(int argc, const char* const* argv) {
base::CommandLine::Init(argc, argv);
base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
InitLogging();
VLOG(1) << "Version: " << kEnterpriseCompanionVersion << ", " << BuildFlavor()
<< ", " << BuildArch()
<< ", command line: " << command_line->GetCommandLineString();
VLOG(1) << "OS version: " << OperatingSystemVersion()
<< ", System uptime (seconds): "
<< base::SysInfo::Uptime().InSeconds() << ", parent pid: "
<< base::GetParentProcessId(base::GetCurrentProcessHandle());
InitThreadPool();
base::AtExitManager exit_manager;
base::SingleThreadTaskExecutor main_task_executor;
if (command_line->HasSwitch(kCrashHandlerSwitch)) {
return CrashReporterMain();
}
InitializeCrashReporting();
// Records a backtrace in the log, crashes the program, saves a crash dump,
// and reports the crash.
CHECK(!command_line->HasSwitch(kCrashMeSwitch))
<< kCrashMeSwitch << " switch was used.";
ScopedIPCSupportWrapper ipc_support;
EnterpriseCompanionStatus status =
CreateAppForCommandLine(command_line)->Run();
LOG_IF(ERROR, !status.ok())
<< "Application completed with error: " << status.description();
return !status.ok();
}
std::optional<base::FilePath> GetLogFilePath() {
std::optional<base::FilePath> path = GetInstallDirectory();
return path ? path->Append(FILE_PATH_LITERAL("enterprise_companion.log"))
: path;
}
} // namespace enterprise_companion
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