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node_main.cc
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node_main.cc
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// Copyright (c) 2015 GitHub, Inc.
// Use of this source code is governed by the MIT license that can be
// found in the LICENSE file.
#include "shell/app/node_main.h"
#include <map>
#include <memory>
#include <string>
#include <unordered_set>
#include <utility>
#include <vector>
#include "base/base_switches.h"
#include "base/command_line.h"
#include "base/feature_list.h"
#include "base/strings/string_util.h"
#include "base/strings/utf_string_conversions.h"
#include "base/task/thread_pool/thread_pool_instance.h"
#include "base/threading/thread_task_runner_handle.h"
#include "content/public/common/content_switches.h"
#include "electron/electron_version.h"
#include "gin/array_buffer.h"
#include "gin/public/isolate_holder.h"
#include "gin/v8_initializer.h"
#include "shell/app/uv_task_runner.h"
#include "shell/browser/javascript_environment.h"
#include "shell/common/api/electron_bindings.h"
#include "shell/common/gin_helper/dictionary.h"
#include "shell/common/node_bindings.h"
#include "shell/common/node_includes.h"
#if defined(OS_LINUX)
#include "components/crash/core/app/breakpad_linux.h"
#endif
#if defined(OS_WIN)
#include "chrome/child/v8_crashpad_support_win.h"
#endif
#if !defined(MAS_BUILD)
#include "components/crash/core/app/crashpad.h" // nogncheck
#include "shell/app/electron_crash_reporter_client.h"
#include "shell/browser/api/electron_api_crash_reporter.h"
#include "shell/common/crash_keys.h"
#endif
namespace {
// Initialize Node.js cli options to pass to Node.js
// See https://nodejs.org/api/cli.html#cli_options
void SetNodeCliFlags() {
// Options that are unilaterally disallowed
const std::unordered_set<base::StringPiece, base::StringPieceHash>
disallowed = {"--openssl-config", "--use-bundled-ca", "--use-openssl-ca",
"--force-fips", "--enable-fips"};
const auto argv = base::CommandLine::ForCurrentProcess()->argv();
std::vector<std::string> args;
// TODO(codebytere): We need to set the first entry in args to the
// process name owing to src/node_options-inl.h#L286-L290 but this is
// redundant and so should be refactored upstream.
args.reserve(argv.size() + 1);
args.emplace_back("electron");
for (const auto& arg : argv) {
#if defined(OS_WIN)
const auto& option = base::WideToUTF8(arg);
#else
const auto& option = arg;
#endif
const auto stripped = base::StringPiece(option).substr(0, option.find('='));
if (disallowed.count(stripped) != 0) {
LOG(ERROR) << "The Node.js cli flag " << stripped
<< " is not supported in Electron";
} else {
args.push_back(option);
}
}
std::vector<std::string> errors;
// Node.js itself will output parsing errors to
// console so we don't need to handle that ourselves
ProcessGlobalArgs(&args, nullptr, &errors, node::kDisallowedInEnvironment);
}
#if defined(MAS_BUILD)
void SetCrashKeyStub(const std::string& key, const std::string& value) {}
void ClearCrashKeyStub(const std::string& key) {}
#endif
} // namespace
namespace electron {
#if defined(OS_LINUX)
void CrashReporterStart(gin_helper::Dictionary options) {
std::string submit_url;
bool upload_to_server = true;
bool ignore_system_crash_handler = false;
bool rate_limit = false;
bool compress = false;
std::map<std::string, std::string> global_extra;
std::map<std::string, std::string> extra;
options.Get("submitURL", &submit_url);
options.Get("uploadToServer", &upload_to_server);
options.Get("ignoreSystemCrashHandler", &ignore_system_crash_handler);
options.Get("rateLimit", &rate_limit);
options.Get("compress", &compress);
options.Get("extra", &extra);
options.Get("globalExtra", &global_extra);
std::string product_name;
if (options.Get("productName", &product_name))
global_extra["_productName"] = product_name;
std::string company_name;
if (options.Get("companyName", &company_name))
global_extra["_companyName"] = company_name;
api::crash_reporter::Start(submit_url, upload_to_server,
ignore_system_crash_handler, rate_limit, compress,
global_extra, extra, true);
}
#endif
v8::Local<v8::Value> GetParameters(v8::Isolate* isolate) {
std::map<std::string, std::string> keys;
#if !defined(MAS_BUILD)
electron::crash_keys::GetCrashKeys(&keys);
#endif
return gin::ConvertToV8(isolate, keys);
}
int NodeMain(int argc, char* argv[]) {
base::CommandLine::Init(argc, argv);
#if defined(OS_WIN)
v8_crashpad_support::SetUp();
#endif
#if !defined(MAS_BUILD)
ElectronCrashReporterClient::Create();
#endif
#if defined(OS_WIN) || (defined(OS_MAC) && !defined(MAS_BUILD))
crash_reporter::InitializeCrashpad(false, "node");
#endif
#if !defined(MAS_BUILD)
crash_keys::SetCrashKeysFromCommandLine(
*base::CommandLine::ForCurrentProcess());
crash_keys::SetPlatformCrashKey();
#endif
int exit_code = 1;
{
// Feed gin::PerIsolateData with a task runner.
argv = uv_setup_args(argc, argv);
uv_loop_t* loop = uv_default_loop();
auto uv_task_runner = base::MakeRefCounted<UvTaskRunner>(loop);
base::ThreadTaskRunnerHandle handle(uv_task_runner);
// Initialize feature list.
auto feature_list = std::make_unique<base::FeatureList>();
feature_list->InitializeFromCommandLine("", "");
base::FeatureList::SetInstance(std::move(feature_list));
// Explicitly register electron's builtin modules.
NodeBindings::RegisterBuiltinModules();
// Parse and set Node.js cli flags.
SetNodeCliFlags();
int exec_argc;
const char** exec_argv;
node::Init(&argc, const_cast<const char**>(argv), &exec_argc, &exec_argv);
gin::V8Initializer::LoadV8Snapshot(
gin::V8Initializer::V8SnapshotFileType::kWithAdditionalContext);
// V8 requires a task scheduler.
base::ThreadPoolInstance::CreateAndStartWithDefaultParams("Electron");
// Allow Node.js to track the amount of time the event loop has spent
// idle in the kernel’s event provider .
uv_loop_configure(loop, UV_METRICS_IDLE_TIME);
// Initialize gin::IsolateHolder.
JavascriptEnvironment gin_env(loop);
v8::Isolate* isolate = gin_env.isolate();
v8::Isolate::Scope isolate_scope(isolate);
v8::Locker locker(isolate);
node::Environment* env = nullptr;
node::IsolateData* isolate_data = nullptr;
{
v8::HandleScope scope(isolate);
isolate_data = node::CreateIsolateData(isolate, loop, gin_env.platform());
CHECK_NE(nullptr, isolate_data);
std::vector<std::string> args(argv, argv + argc); // NOLINT
std::vector<std::string> exec_args(exec_argv,
exec_argv + exec_argc); // NOLINT
env = node::CreateEnvironment(isolate_data, gin_env.context(), args,
exec_args);
CHECK_NOT_NULL(env);
node::IsolateSettings is;
node::SetIsolateUpForNode(isolate, is);
gin_helper::Dictionary process(isolate, env->process_object());
process.SetMethod("crash", &ElectronBindings::Crash);
// Setup process.crashReporter in child node processes
gin_helper::Dictionary reporter = gin::Dictionary::CreateEmpty(isolate);
#if defined(OS_LINUX)
reporter.SetMethod("start", &CrashReporterStart);
#endif
reporter.SetMethod("getParameters", &GetParameters);
#if defined(MAS_BUILD)
reporter.SetMethod("addExtraParameter", &SetCrashKeyStub);
reporter.SetMethod("removeExtraParameter", &ClearCrashKeyStub);
#else
reporter.SetMethod("addExtraParameter",
&electron::crash_keys::SetCrashKey);
reporter.SetMethod("removeExtraParameter",
&electron::crash_keys::ClearCrashKey);
#endif
process.Set("crashReporter", reporter);
gin_helper::Dictionary versions;
if (process.Get("versions", &versions)) {
versions.SetReadOnly(ELECTRON_PROJECT_NAME, ELECTRON_VERSION_STRING);
}
}
v8::HandleScope scope(isolate);
node::LoadEnvironment(env, node::StartExecutionCallback{});
env->set_trace_sync_io(env->options()->trace_sync_io);
{
v8::SealHandleScope seal(isolate);
bool more;
env->performance_state()->Mark(
node::performance::NODE_PERFORMANCE_MILESTONE_LOOP_START);
do {
uv_run(env->event_loop(), UV_RUN_DEFAULT);
gin_env.platform()->DrainTasks(isolate);
more = uv_loop_alive(env->event_loop());
if (more && !env->is_stopping())
continue;
if (!uv_loop_alive(env->event_loop())) {
EmitBeforeExit(env);
}
// Emit `beforeExit` if the loop became alive either after emitting
// event, or after running some callbacks.
more = uv_loop_alive(env->event_loop());
} while (more && !env->is_stopping());
env->performance_state()->Mark(
node::performance::NODE_PERFORMANCE_MILESTONE_LOOP_EXIT);
}
env->set_trace_sync_io(false);
exit_code = node::EmitExit(env);
node::ResetStdio();
node::Stop(env);
node::FreeEnvironment(env);
node::FreeIsolateData(isolate_data);
}
// According to "src/gin/shell/gin_main.cc":
//
// gin::IsolateHolder waits for tasks running in ThreadPool in its
// destructor and thus must be destroyed before ThreadPool starts skipping
// CONTINUE_ON_SHUTDOWN tasks.
base::ThreadPoolInstance::Get()->Shutdown();
v8::V8::Dispose();
return exit_code;
}
} // namespace electron