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chromium / external / github.com / v8 / node / bd496e0187cebe5ae2d5ea2888487f041e6970fb / . / src / node.cc
blob: d79b8ee30edd2be067866d74fd5aa65d68ba1dd8 [file] [log] [blame]
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
#include "node.h"
#include "node_buffer.h"
#include "node_constants.h"
#include "node_file.h"
#include "node_http_parser.h"
#include "node_javascript.h"
#include "node_version.h"
#include "node_internals.h"
#include "node_revert.h"
#include "node_debug_options.h"
#if defined HAVE_PERFCTR
#include "node_counters.h"
#endif
#if HAVE_OPENSSL
#include "node_crypto.h"
#endif
#if defined(NODE_HAVE_I18N_SUPPORT)
#include "node_i18n.h"
#endif
#if defined HAVE_DTRACE || defined HAVE_ETW
#include "node_dtrace.h"
#endif
#if defined HAVE_LTTNG
#include "node_lttng.h"
#endif
#include "ares.h"
#include "async-wrap.h"
#include "async-wrap-inl.h"
#include "env.h"
#include "env-inl.h"
#include "handle_wrap.h"
#include "req-wrap.h"
#include "req-wrap-inl.h"
#include "string_bytes.h"
#include "tracing/agent.h"
#include "util.h"
#include "uv.h"
#if NODE_USE_V8_PLATFORM
#include "libplatform/libplatform.h"
#endif // NODE_USE_V8_PLATFORM
#include "v8-debug.h"
#include "v8-profiler.h"
#include "zlib.h"
#ifdef NODE_ENABLE_VTUNE_PROFILING
#include "../deps/v8/src/third_party/vtune/v8-vtune.h"
#endif
#include <errno.h>
#include <limits.h> // PATH_MAX
#include <locale.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <string>
#include <vector>
#if defined(NODE_HAVE_I18N_SUPPORT)
#include <unicode/uvernum.h>
#endif
#if defined(LEAK_SANITIZER)
#include <sanitizer/lsan_interface.h>
#endif
#if defined(_MSC_VER)
#include <direct.h>
#include <io.h>
#define getpid GetCurrentProcessId
#define umask _umask
typedef int mode_t;
#else
#include <pthread.h>
#include <sys/resource.h> // getrlimit, setrlimit
#include <unistd.h> // setuid, getuid
#endif
#if defined(__POSIX__) && !defined(__ANDROID__)
#include <pwd.h> // getpwnam()
#include <grp.h> // getgrnam()
#endif
#ifdef __APPLE__
#include <crt_externs.h>
#define environ (*_NSGetEnviron())
#elif !defined(_MSC_VER)
extern char **environ;
#endif
namespace node {
using v8::Array;
using v8::ArrayBuffer;
using v8::Boolean;
using v8::Context;
using v8::EscapableHandleScope;
using v8::Exception;
using v8::Float64Array;
using v8::Function;
using v8::FunctionCallbackInfo;
using v8::HandleScope;
using v8::HeapStatistics;
using v8::Integer;
using v8::Isolate;
using v8::Local;
using v8::Locker;
using v8::MaybeLocal;
using v8::Message;
using v8::Name;
using v8::NamedPropertyHandlerConfiguration;
using v8::Null;
using v8::Number;
using v8::Object;
using v8::ObjectTemplate;
using v8::Promise;
using v8::PromiseRejectMessage;
using v8::PropertyCallbackInfo;
using v8::ScriptOrigin;
using v8::SealHandleScope;
using v8::String;
using v8::TryCatch;
using v8::Uint32Array;
using v8::V8;
using v8::Value;
static bool print_eval = false;
static bool force_repl = false;
static bool syntax_check_only = false;
static bool trace_deprecation = false;
static bool throw_deprecation = false;
static bool trace_sync_io = false;
static bool track_heap_objects = false;
static const char* eval_string = nullptr;
static unsigned int preload_module_count = 0;
static const char** preload_modules = nullptr;
static const int v8_default_thread_pool_size = 4;
static int v8_thread_pool_size = v8_default_thread_pool_size;
static bool prof_process = false;
static bool v8_is_profiling = false;
static bool node_is_initialized = false;
static node_module* modpending;
static node_module* modlist_builtin;
static node_module* modlist_linked;
static node_module* modlist_addon;
static bool trace_enabled = false;
static const char* trace_enabled_categories = nullptr;
#if defined(NODE_HAVE_I18N_SUPPORT)
// Path to ICU data (for i18n / Intl)
std::string icu_data_dir; // NOLINT(runtime/string)
#endif
// used by C++ modules as well
bool no_deprecation = false;
#if HAVE_OPENSSL
// use OpenSSL's cert store instead of bundled certs
bool ssl_openssl_cert_store =
#if defined(NODE_OPENSSL_CERT_STORE)
true;
#else
false;
#endif
# if NODE_FIPS_MODE
// used by crypto module
bool enable_fips_crypto = false;
bool force_fips_crypto = false;
# endif // NODE_FIPS_MODE
std::string openssl_config; // NOLINT(runtime/string)
#endif // HAVE_OPENSSL
// true if process warnings should be suppressed
bool no_process_warnings = false;
bool trace_warnings = false;
// Set in node.cc by ParseArgs when --preserve-symlinks is used.
// Used in node_config.cc to set a constant on process.binding('config')
// that is used by lib/module.js
bool config_preserve_symlinks = false;
// Set in node.cc by ParseArgs when --redirect-warnings= is used.
std::string config_warning_file; // NOLINT(runtime/string)
bool v8_initialized = false;
// process-relative uptime base, initialized at start-up
static double prog_start_time;
static bool debugger_running;
static uv_async_t dispatch_debug_messages_async;
static Mutex node_isolate_mutex;
static v8::Isolate* node_isolate;
static node::DebugOptions debug_options;
static struct {
#if NODE_USE_V8_PLATFORM
void Initialize(int thread_pool_size) {
platform_ = v8::platform::CreateDefaultPlatform(thread_pool_size);
V8::InitializePlatform(platform_);
tracing::TraceEventHelper::SetCurrentPlatform(platform_);
}
void PumpMessageLoop(Isolate* isolate) {
v8::platform::PumpMessageLoop(platform_, isolate);
}
void Dispose() {
delete platform_;
platform_ = nullptr;
}
#if HAVE_INSPECTOR
bool StartInspector(Environment *env, const char* script_path,
const node::DebugOptions& options) {
return env->inspector_agent()->Start(platform_, script_path, options);
}
#endif // HAVE_INSPECTOR
void StartTracingAgent() {
CHECK(tracing_agent_ == nullptr);
tracing_agent_ = new tracing::Agent();
tracing_agent_->Start(platform_, trace_enabled_categories);
}
void StopTracingAgent() {
tracing_agent_->Stop();
}
v8::Platform* platform_;
tracing::Agent* tracing_agent_;
#else // !NODE_USE_V8_PLATFORM
void Initialize(int thread_pool_size) {}
void PumpMessageLoop(Isolate* isolate) {}
void Dispose() {}
bool StartInspector(Environment *env, const char* script_path,
const node::DebugOptions& options) {
env->ThrowError("Node compiled with NODE_USE_V8_PLATFORM=0");
return false; // make compiler happy
}
void StartTracingAgent() {
fprintf(stderr, "Node compiled with NODE_USE_V8_PLATFORM=0, "
"so event tracing is not available.\n");
}
void StopTracingAgent() {}
#endif // !NODE_USE_V8_PLATFORM
} v8_platform;
#ifdef __POSIX__
static uv_sem_t debug_semaphore;
static const unsigned kMaxSignal = 32;
#endif
static void PrintErrorString(const char* format, ...) {
va_list ap;
va_start(ap, format);
#ifdef _WIN32
HANDLE stderr_handle = GetStdHandle(STD_ERROR_HANDLE);
// Check if stderr is something other than a tty/console
if (stderr_handle == INVALID_HANDLE_VALUE ||
stderr_handle == nullptr ||
uv_guess_handle(_fileno(stderr)) != UV_TTY) {
vfprintf(stderr, format, ap);
va_end(ap);
return;
}
// Fill in any placeholders
int n = _vscprintf(format, ap);
std::vector<char> out(n + 1);
vsprintf(out.data(), format, ap);
// Get required wide buffer size
n = MultiByteToWideChar(CP_UTF8, 0, out.data(), -1, nullptr, 0);
std::vector<wchar_t> wbuf(n);
MultiByteToWideChar(CP_UTF8, 0, out.data(), -1, wbuf.data(), n);
// Don't include the null character in the output
CHECK_GT(n, 0);
WriteConsoleW(stderr_handle, wbuf.data(), n - 1, nullptr, nullptr);
#else
vfprintf(stderr, format, ap);
#endif
va_end(ap);
}
static void CheckImmediate(uv_check_t* handle) {
Environment* env = Environment::from_immediate_check_handle(handle);
HandleScope scope(env->isolate());
Context::Scope context_scope(env->context());
MakeCallback(env, env->process_object(), env->immediate_callback_string());
}
static void IdleImmediateDummy(uv_idle_t* handle) {
// Do nothing. Only for maintaining event loop.
// TODO(bnoordhuis) Maybe make libuv accept nullptr idle callbacks.
}
static inline const char *errno_string(int errorno) {
#define ERRNO_CASE(e) case e: return #e;
switch (errorno) {
#ifdef EACCES
ERRNO_CASE(EACCES);
#endif
#ifdef EADDRINUSE
ERRNO_CASE(EADDRINUSE);
#endif
#ifdef EADDRNOTAVAIL
ERRNO_CASE(EADDRNOTAVAIL);
#endif
#ifdef EAFNOSUPPORT
ERRNO_CASE(EAFNOSUPPORT);
#endif
#ifdef EAGAIN
ERRNO_CASE(EAGAIN);
#endif
#ifdef EWOULDBLOCK
# if EAGAIN != EWOULDBLOCK
ERRNO_CASE(EWOULDBLOCK);
# endif
#endif
#ifdef EALREADY
ERRNO_CASE(EALREADY);
#endif
#ifdef EBADF
ERRNO_CASE(EBADF);
#endif
#ifdef EBADMSG
ERRNO_CASE(EBADMSG);
#endif
#ifdef EBUSY
ERRNO_CASE(EBUSY);
#endif
#ifdef ECANCELED
ERRNO_CASE(ECANCELED);
#endif
#ifdef ECHILD
ERRNO_CASE(ECHILD);
#endif
#ifdef ECONNABORTED
ERRNO_CASE(ECONNABORTED);
#endif
#ifdef ECONNREFUSED
ERRNO_CASE(ECONNREFUSED);
#endif
#ifdef ECONNRESET
ERRNO_CASE(ECONNRESET);
#endif
#ifdef EDEADLK
ERRNO_CASE(EDEADLK);
#endif
#ifdef EDESTADDRREQ
ERRNO_CASE(EDESTADDRREQ);
#endif
#ifdef EDOM
ERRNO_CASE(EDOM);
#endif
#ifdef EDQUOT
ERRNO_CASE(EDQUOT);
#endif
#ifdef EEXIST
ERRNO_CASE(EEXIST);
#endif
#ifdef EFAULT
ERRNO_CASE(EFAULT);
#endif
#ifdef EFBIG
ERRNO_CASE(EFBIG);
#endif
#ifdef EHOSTUNREACH
ERRNO_CASE(EHOSTUNREACH);
#endif
#ifdef EIDRM
ERRNO_CASE(EIDRM);
#endif
#ifdef EILSEQ
ERRNO_CASE(EILSEQ);
#endif
#ifdef EINPROGRESS
ERRNO_CASE(EINPROGRESS);
#endif
#ifdef EINTR
ERRNO_CASE(EINTR);
#endif
#ifdef EINVAL
ERRNO_CASE(EINVAL);
#endif
#ifdef EIO
ERRNO_CASE(EIO);
#endif
#ifdef EISCONN
ERRNO_CASE(EISCONN);
#endif
#ifdef EISDIR
ERRNO_CASE(EISDIR);
#endif
#ifdef ELOOP
ERRNO_CASE(ELOOP);
#endif
#ifdef EMFILE
ERRNO_CASE(EMFILE);
#endif
#ifdef EMLINK
ERRNO_CASE(EMLINK);
#endif
#ifdef EMSGSIZE
ERRNO_CASE(EMSGSIZE);
#endif
#ifdef EMULTIHOP
ERRNO_CASE(EMULTIHOP);
#endif
#ifdef ENAMETOOLONG
ERRNO_CASE(ENAMETOOLONG);
#endif
#ifdef ENETDOWN
ERRNO_CASE(ENETDOWN);
#endif
#ifdef ENETRESET
ERRNO_CASE(ENETRESET);
#endif
#ifdef ENETUNREACH
ERRNO_CASE(ENETUNREACH);
#endif
#ifdef ENFILE
ERRNO_CASE(ENFILE);
#endif
#ifdef ENOBUFS
ERRNO_CASE(ENOBUFS);
#endif
#ifdef ENODATA
ERRNO_CASE(ENODATA);
#endif
#ifdef ENODEV
ERRNO_CASE(ENODEV);
#endif
#ifdef ENOENT
ERRNO_CASE(ENOENT);
#endif
#ifdef ENOEXEC
ERRNO_CASE(ENOEXEC);
#endif
#ifdef ENOLINK
ERRNO_CASE(ENOLINK);
#endif
#ifdef ENOLCK
# if ENOLINK != ENOLCK
ERRNO_CASE(ENOLCK);
# endif
#endif
#ifdef ENOMEM
ERRNO_CASE(ENOMEM);
#endif
#ifdef ENOMSG
ERRNO_CASE(ENOMSG);
#endif
#ifdef ENOPROTOOPT
ERRNO_CASE(ENOPROTOOPT);
#endif
#ifdef ENOSPC
ERRNO_CASE(ENOSPC);
#endif
#ifdef ENOSR
ERRNO_CASE(ENOSR);
#endif
#ifdef ENOSTR
ERRNO_CASE(ENOSTR);
#endif
#ifdef ENOSYS
ERRNO_CASE(ENOSYS);
#endif
#ifdef ENOTCONN
ERRNO_CASE(ENOTCONN);
#endif
#ifdef ENOTDIR
ERRNO_CASE(ENOTDIR);
#endif
#ifdef ENOTEMPTY
# if ENOTEMPTY != EEXIST
ERRNO_CASE(ENOTEMPTY);
# endif
#endif
#ifdef ENOTSOCK
ERRNO_CASE(ENOTSOCK);
#endif
#ifdef ENOTSUP
ERRNO_CASE(ENOTSUP);
#else
# ifdef EOPNOTSUPP
ERRNO_CASE(EOPNOTSUPP);
# endif
#endif
#ifdef ENOTTY
ERRNO_CASE(ENOTTY);
#endif
#ifdef ENXIO
ERRNO_CASE(ENXIO);
#endif
#ifdef EOVERFLOW
ERRNO_CASE(EOVERFLOW);
#endif
#ifdef EPERM
ERRNO_CASE(EPERM);
#endif
#ifdef EPIPE
ERRNO_CASE(EPIPE);
#endif
#ifdef EPROTO
ERRNO_CASE(EPROTO);
#endif
#ifdef EPROTONOSUPPORT
ERRNO_CASE(EPROTONOSUPPORT);
#endif
#ifdef EPROTOTYPE
ERRNO_CASE(EPROTOTYPE);
#endif
#ifdef ERANGE
ERRNO_CASE(ERANGE);
#endif
#ifdef EROFS
ERRNO_CASE(EROFS);
#endif
#ifdef ESPIPE
ERRNO_CASE(ESPIPE);
#endif
#ifdef ESRCH
ERRNO_CASE(ESRCH);
#endif
#ifdef ESTALE
ERRNO_CASE(ESTALE);
#endif
#ifdef ETIME
ERRNO_CASE(ETIME);
#endif
#ifdef ETIMEDOUT
ERRNO_CASE(ETIMEDOUT);
#endif
#ifdef ETXTBSY
ERRNO_CASE(ETXTBSY);
#endif
#ifdef EXDEV
ERRNO_CASE(EXDEV);
#endif
default: return "";
}
}
const char *signo_string(int signo) {
#define SIGNO_CASE(e) case e: return #e;
switch (signo) {
#ifdef SIGHUP
SIGNO_CASE(SIGHUP);
#endif
#ifdef SIGINT
SIGNO_CASE(SIGINT);
#endif
#ifdef SIGQUIT
SIGNO_CASE(SIGQUIT);
#endif
#ifdef SIGILL
SIGNO_CASE(SIGILL);
#endif
#ifdef SIGTRAP
SIGNO_CASE(SIGTRAP);
#endif
#ifdef SIGABRT
SIGNO_CASE(SIGABRT);
#endif
#ifdef SIGIOT
# if SIGABRT != SIGIOT
SIGNO_CASE(SIGIOT);
# endif
#endif
#ifdef SIGBUS
SIGNO_CASE(SIGBUS);
#endif
#ifdef SIGFPE
SIGNO_CASE(SIGFPE);
#endif
#ifdef SIGKILL
SIGNO_CASE(SIGKILL);
#endif
#ifdef SIGUSR1
SIGNO_CASE(SIGUSR1);
#endif
#ifdef SIGSEGV
SIGNO_CASE(SIGSEGV);
#endif
#ifdef SIGUSR2
SIGNO_CASE(SIGUSR2);
#endif
#ifdef SIGPIPE
SIGNO_CASE(SIGPIPE);
#endif
#ifdef SIGALRM
SIGNO_CASE(SIGALRM);
#endif
SIGNO_CASE(SIGTERM);
#ifdef SIGCHLD
SIGNO_CASE(SIGCHLD);
#endif
#ifdef SIGSTKFLT
SIGNO_CASE(SIGSTKFLT);
#endif
#ifdef SIGCONT
SIGNO_CASE(SIGCONT);
#endif
#ifdef SIGSTOP
SIGNO_CASE(SIGSTOP);
#endif
#ifdef SIGTSTP
SIGNO_CASE(SIGTSTP);
#endif
#ifdef SIGBREAK
SIGNO_CASE(SIGBREAK);
#endif
#ifdef SIGTTIN
SIGNO_CASE(SIGTTIN);
#endif
#ifdef SIGTTOU
SIGNO_CASE(SIGTTOU);
#endif
#ifdef SIGURG
SIGNO_CASE(SIGURG);
#endif
#ifdef SIGXCPU
SIGNO_CASE(SIGXCPU);
#endif
#ifdef SIGXFSZ
SIGNO_CASE(SIGXFSZ);
#endif
#ifdef SIGVTALRM
SIGNO_CASE(SIGVTALRM);
#endif
#ifdef SIGPROF
SIGNO_CASE(SIGPROF);
#endif
#ifdef SIGWINCH
SIGNO_CASE(SIGWINCH);
#endif
#ifdef SIGIO
SIGNO_CASE(SIGIO);
#endif
#ifdef SIGPOLL
# if SIGPOLL != SIGIO
SIGNO_CASE(SIGPOLL);
# endif
#endif
#ifdef SIGLOST
# if SIGLOST != SIGABRT
SIGNO_CASE(SIGLOST);
# endif
#endif
#ifdef SIGPWR
# if SIGPWR != SIGLOST
SIGNO_CASE(SIGPWR);
# endif
#endif
#ifdef SIGINFO
# if !defined(SIGPWR) || SIGINFO != SIGPWR
SIGNO_CASE(SIGINFO);
# endif
#endif
#ifdef SIGSYS
SIGNO_CASE(SIGSYS);
#endif
default: return "";
}
}
Local<Value> ErrnoException(Isolate* isolate,
int errorno,
const char *syscall,
const char *msg,
const char *path) {
Environment* env = Environment::GetCurrent(isolate);
Local<Value> e;
Local<String> estring = OneByteString(env->isolate(), errno_string(errorno));
if (msg == nullptr || msg[0] == '\0') {
msg = strerror(errorno);
}
Local<String> message = OneByteString(env->isolate(), msg);
Local<String> cons =
String::Concat(estring, FIXED_ONE_BYTE_STRING(env->isolate(), ", "));
cons = String::Concat(cons, message);
Local<String> path_string;
if (path != nullptr) {
// FIXME(bnoordhuis) It's questionable to interpret the file path as UTF-8.
path_string = String::NewFromUtf8(env->isolate(), path);
}
if (path_string.IsEmpty() == false) {
cons = String::Concat(cons, FIXED_ONE_BYTE_STRING(env->isolate(), " '"));
cons = String::Concat(cons, path_string);
cons = String::Concat(cons, FIXED_ONE_BYTE_STRING(env->isolate(), "'"));
}
e = Exception::Error(cons);
Local<Object> obj = e->ToObject(env->isolate());
obj->Set(env->errno_string(), Integer::New(env->isolate(), errorno));
obj->Set(env->code_string(), estring);
if (path_string.IsEmpty() == false) {
obj->Set(env->path_string(), path_string);
}
if (syscall != nullptr) {
obj->Set(env->syscall_string(), OneByteString(env->isolate(), syscall));
}
return e;
}
static Local<String> StringFromPath(Isolate* isolate, const char* path) {
#ifdef _WIN32
if (strncmp(path, "\\\\?\\UNC\\", 8) == 0) {
return String::Concat(FIXED_ONE_BYTE_STRING(isolate, "\\\\"),
String::NewFromUtf8(isolate, path + 8));
} else if (strncmp(path, "\\\\?\\", 4) == 0) {
return String::NewFromUtf8(isolate, path + 4);
}
#endif
return String::NewFromUtf8(isolate, path);
}
Local<Value> UVException(Isolate* isolate,
int errorno,
const char* syscall,
const char* msg,
const char* path) {
return UVException(isolate, errorno, syscall, msg, path, nullptr);
}
Local<Value> UVException(Isolate* isolate,
int errorno,
const char* syscall,
const char* msg,
const char* path,
const char* dest) {
Environment* env = Environment::GetCurrent(isolate);
if (!msg || !msg[0])
msg = uv_strerror(errorno);
Local<String> js_code = OneByteString(isolate, uv_err_name(errorno));
Local<String> js_syscall = OneByteString(isolate, syscall);
Local<String> js_path;
Local<String> js_dest;
Local<String> js_msg = js_code;
js_msg = String::Concat(js_msg, FIXED_ONE_BYTE_STRING(isolate, ": "));
js_msg = String::Concat(js_msg, OneByteString(isolate, msg));
js_msg = String::Concat(js_msg, FIXED_ONE_BYTE_STRING(isolate, ", "));
js_msg = String::Concat(js_msg, js_syscall);
if (path != nullptr) {
js_path = StringFromPath(isolate, path);
js_msg = String::Concat(js_msg, FIXED_ONE_BYTE_STRING(isolate, " '"));
js_msg = String::Concat(js_msg, js_path);
js_msg = String::Concat(js_msg, FIXED_ONE_BYTE_STRING(isolate, "'"));
}
if (dest != nullptr) {
js_dest = StringFromPath(isolate, dest);
js_msg = String::Concat(js_msg, FIXED_ONE_BYTE_STRING(isolate, " -> '"));
js_msg = String::Concat(js_msg, js_dest);
js_msg = String::Concat(js_msg, FIXED_ONE_BYTE_STRING(isolate, "'"));
}
Local<Object> e = Exception::Error(js_msg)->ToObject(isolate);
// TODO(piscisaureus) errno should probably go; the user has no way of
// knowing which uv errno value maps to which error.
e->Set(env->errno_string(), Integer::New(isolate, errorno));
e->Set(env->code_string(), js_code);
e->Set(env->syscall_string(), js_syscall);
if (!js_path.IsEmpty())
e->Set(env->path_string(), js_path);
if (!js_dest.IsEmpty())
e->Set(env->dest_string(), js_dest);
return e;
}
// Look up environment variable unless running as setuid root.
bool SafeGetenv(const char* key, std::string* text) {
#ifndef _WIN32
// TODO(bnoordhuis) Should perhaps also check whether getauxval(AT_SECURE)
// is non-zero on Linux.
if (getuid() != geteuid() || getgid() != getegid()) {
text->clear();
return false;
}
#endif
if (const char* value = getenv(key)) {
*text = value;
return true;
}
text->clear();
return false;
}
#ifdef _WIN32
// Does about the same as strerror(),
// but supports all windows error messages
static const char *winapi_strerror(const int errorno, bool* must_free) {
char *errmsg = nullptr;
FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM |
FORMAT_MESSAGE_IGNORE_INSERTS, nullptr, errorno,
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), (LPTSTR)&errmsg, 0, nullptr);
if (errmsg) {
*must_free = true;
// Remove trailing newlines
for (int i = strlen(errmsg) - 1;
i >= 0 && (errmsg[i] == '\n' || errmsg[i] == '\r'); i--) {
errmsg[i] = '\0';
}
return errmsg;
} else {
// FormatMessage failed
*must_free = false;
return "Unknown error";
}
}
Local<Value> WinapiErrnoException(Isolate* isolate,
int errorno,
const char* syscall,
const char* msg,
const char* path) {
Environment* env = Environment::GetCurrent(isolate);
Local<Value> e;
bool must_free = false;
if (!msg || !msg[0]) {
msg = winapi_strerror(errorno, &must_free);
}
Local<String> message = OneByteString(env->isolate(), msg);
if (path) {
Local<String> cons1 =
String::Concat(message, FIXED_ONE_BYTE_STRING(isolate, " '"));
Local<String> cons2 =
String::Concat(cons1, String::NewFromUtf8(isolate, path));
Local<String> cons3 =
String::Concat(cons2, FIXED_ONE_BYTE_STRING(isolate, "'"));
e = Exception::Error(cons3);
} else {
e = Exception::Error(message);
}
Local<Object> obj = e->ToObject(env->isolate());
obj->Set(env->errno_string(), Integer::New(isolate, errorno));
if (path != nullptr) {
obj->Set(env->path_string(), String::NewFromUtf8(isolate, path));
}
if (syscall != nullptr) {
obj->Set(env->syscall_string(), OneByteString(isolate, syscall));
}
if (must_free)
LocalFree((HLOCAL)msg);
return e;
}
#endif
void* ArrayBufferAllocator::Allocate(size_t size) {
if (zero_fill_field_ || zero_fill_all_buffers)
return node::UncheckedCalloc(size);
else
return node::UncheckedMalloc(size);
}
static bool DomainHasErrorHandler(const Environment* env,
const Local<Object>& domain) {
HandleScope scope(env->isolate());
Local<Value> domain_event_listeners_v = domain->Get(env->events_string());
if (!domain_event_listeners_v->IsObject())
return false;
Local<Object> domain_event_listeners_o =
domain_event_listeners_v.As<Object>();
Local<Value> domain_error_listeners_v =
domain_event_listeners_o->Get(env->error_string());
if (domain_error_listeners_v->IsFunction() ||
(domain_error_listeners_v->IsArray() &&
domain_error_listeners_v.As<Array>()->Length() > 0))
return true;
return false;
}
static bool DomainsStackHasErrorHandler(const Environment* env) {
HandleScope scope(env->isolate());
if (!env->using_domains())
return false;
Local<Array> domains_stack_array = env->domains_stack_array().As<Array>();
if (domains_stack_array->Length() == 0)
return false;
uint32_t domains_stack_length = domains_stack_array->Length();
for (uint32_t i = domains_stack_length; i > 0; --i) {
Local<Value> domain_v = domains_stack_array->Get(i - 1);
if (!domain_v->IsObject())
return false;
Local<Object> domain = domain_v.As<Object>();
if (DomainHasErrorHandler(env, domain))
return true;
}
return false;
}
static bool ShouldAbortOnUncaughtException(Isolate* isolate) {
HandleScope scope(isolate);
Environment* env = Environment::GetCurrent(isolate);
Local<Object> process_object = env->process_object();
Local<String> emitting_top_level_domain_error_key =
env->emitting_top_level_domain_error_string();
bool isEmittingTopLevelDomainError =
process_object->Get(emitting_top_level_domain_error_key)->BooleanValue();
return isEmittingTopLevelDomainError || !DomainsStackHasErrorHandler(env);
}
void SetupDomainUse(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);
if (env->using_domains())
return;
env->set_using_domains(true);
HandleScope scope(env->isolate());
Local<Object> process_object = env->process_object();
Local<String> tick_callback_function_key = env->tick_domain_cb_string();
Local<Function> tick_callback_function =
process_object->Get(tick_callback_function_key).As<Function>();
if (!tick_callback_function->IsFunction()) {
fprintf(stderr, "process._tickDomainCallback assigned to non-function\n");
ABORT();
}
process_object->Set(env->tick_callback_string(), tick_callback_function);
env->set_tick_callback_function(tick_callback_function);
CHECK(args[0]->IsArray());
env->set_domain_array(args[0].As<Array>());
CHECK(args[1]->IsArray());
env->set_domains_stack_array(args[1].As<Array>());
// Do a little housekeeping.
env->process_object()->Delete(
env->context(),
FIXED_ONE_BYTE_STRING(args.GetIsolate(), "_setupDomainUse")).FromJust();
uint32_t* const fields = env->domain_flag()->fields();
uint32_t const fields_count = env->domain_flag()->fields_count();
Local<ArrayBuffer> array_buffer =
ArrayBuffer::New(env->isolate(), fields, sizeof(*fields) * fields_count);
args.GetReturnValue().Set(Uint32Array::New(array_buffer, 0, fields_count));
}
void RunMicrotasks(const FunctionCallbackInfo<Value>& args) {
args.GetIsolate()->RunMicrotasks();
}
void SetupProcessObject(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);
CHECK(args[0]->IsFunction());
env->set_push_values_to_array_function(args[0].As<Function>());
env->process_object()->Delete(
env->context(),
FIXED_ONE_BYTE_STRING(env->isolate(), "_setupProcessObject")).FromJust();
}
void SetupNextTick(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);
CHECK(args[0]->IsFunction());
CHECK(args[1]->IsObject());
env->set_tick_callback_function(args[0].As<Function>());
env->SetMethod(args[1].As<Object>(), "runMicrotasks", RunMicrotasks);
// Do a little housekeeping.
env->process_object()->Delete(
env->context(),
FIXED_ONE_BYTE_STRING(args.GetIsolate(), "_setupNextTick")).FromJust();
// Values use to cross communicate with processNextTick.
uint32_t* const fields = env->tick_info()->fields();
uint32_t const fields_count = env->tick_info()->fields_count();
Local<ArrayBuffer> array_buffer =
ArrayBuffer::New(env->isolate(), fields, sizeof(*fields) * fields_count);
args.GetReturnValue().Set(Uint32Array::New(array_buffer, 0, fields_count));
}
void PromiseRejectCallback(PromiseRejectMessage message) {
Local<Promise> promise = message.GetPromise();
Isolate* isolate = promise->GetIsolate();
Local<Value> value = message.GetValue();
Local<Integer> event = Integer::New(isolate, message.GetEvent());
Environment* env = Environment::GetCurrent(isolate);
Local<Function> callback = env->promise_reject_function();
if (value.IsEmpty())
value = Undefined(isolate);
Local<Value> args[] = { event, promise, value };
Local<Object> process = env->process_object();
callback->Call(process, arraysize(args), args);
}
void SetupPromises(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);
Isolate* isolate = env->isolate();
CHECK(args[0]->IsFunction());
isolate->SetPromiseRejectCallback(PromiseRejectCallback);
env->set_promise_reject_function(args[0].As<Function>());
env->process_object()->Delete(
env->context(),
FIXED_ONE_BYTE_STRING(args.GetIsolate(), "_setupPromises")).FromJust();
}
Local<Value> MakeCallback(Environment* env,
Local<Value> recv,
const Local<Function> callback,
int argc,
Local<Value> argv[]) {
// If you hit this assertion, you forgot to enter the v8::Context first.
CHECK_EQ(env->context(), env->isolate()->GetCurrentContext());
Local<Function> pre_fn = env->async_hooks_pre_function();
Local<Function> post_fn = env->async_hooks_post_function();
Local<Object> object, domain;
bool ran_init_callback = false;
bool has_domain = false;
Environment::AsyncCallbackScope callback_scope(env);
// TODO(trevnorris): Adding "_asyncQueue" to the "this" in the init callback
// is a horrible way to detect usage. Rethink how detection should happen.
if (recv->IsObject()) {
object = recv.As<Object>();
Local<Value> async_queue_v = object->Get(env->async_queue_string());
if (async_queue_v->IsObject())
ran_init_callback = true;
}
if (env->using_domains()) {
CHECK(recv->IsObject());
Local<Value> domain_v = object->Get(env->domain_string());
has_domain = domain_v->IsObject();
if (has_domain) {
domain = domain_v.As<Object>();
if (domain->Get(env->disposed_string())->IsTrue())
return Undefined(env->isolate());
}
}
if (has_domain) {
Local<Value> enter_v = domain->Get(env->enter_string());
if (enter_v->IsFunction()) {
if (enter_v.As<Function>()->Call(domain, 0, nullptr).IsEmpty()) {
FatalError("node::MakeCallback",
"domain enter callback threw, please report this");
}
}
}
if (ran_init_callback && !pre_fn.IsEmpty()) {
TryCatch try_catch(env->isolate());
MaybeLocal<Value> ar = pre_fn->Call(env->context(), object, 0, nullptr);
if (ar.IsEmpty()) {
ClearFatalExceptionHandlers(env);
FatalException(env->isolate(), try_catch);
return Local<Value>();
}
}
Local<Value> ret = callback->Call(recv, argc, argv);
if (ran_init_callback && !post_fn.IsEmpty()) {
Local<Value> did_throw = Boolean::New(env->isolate(), ret.IsEmpty());
// Currently there's no way to retrieve an uid from node::MakeCallback().
// This needs to be fixed.
Local<Value> vals[] =
{ Undefined(env->isolate()).As<Value>(), did_throw };
TryCatch try_catch(env->isolate());
MaybeLocal<Value> ar =
post_fn->Call(env->context(), object, arraysize(vals), vals);
if (ar.IsEmpty()) {
ClearFatalExceptionHandlers(env);
FatalException(env->isolate(), try_catch);
return Local<Value>();
}
}
if (ret.IsEmpty()) {
// NOTE: For backwards compatibility with public API we return Undefined()
// if the top level call threw.
return callback_scope.in_makecallback() ?
ret : Undefined(env->isolate()).As<Value>();
}
if (has_domain) {
Local<Value> exit_v = domain->Get(env->exit_string());
if (exit_v->IsFunction()) {
if (exit_v.As<Function>()->Call(domain, 0, nullptr).IsEmpty()) {
FatalError("node::MakeCallback",
"domain exit callback threw, please report this");
}
}
}
if (callback_scope.in_makecallback()) {
return ret;
}
Environment::TickInfo* tick_info = env->tick_info();
if (tick_info->length() == 0) {
env->isolate()->RunMicrotasks();
}
Local<Object> process = env->process_object();
if (tick_info->length() == 0) {
tick_info->set_index(0);
return ret;
}
if (env->tick_callback_function()->Call(process, 0, nullptr).IsEmpty()) {
return Undefined(env->isolate());
}
return ret;
}
Local<Value> MakeCallback(Environment* env,
Local<Object> recv,
Local<String> symbol,
int argc,
Local<Value> argv[]) {
Local<Value> cb_v = recv->Get(symbol);
CHECK(cb_v->IsFunction());
return MakeCallback(env, recv.As<Value>(), cb_v.As<Function>(), argc, argv);
}
Local<Value> MakeCallback(Environment* env,
Local<Object> recv,
const char* method,
int argc,
Local<Value> argv[]) {
Local<String> method_string = OneByteString(env->isolate(), method);
return MakeCallback(env, recv, method_string, argc, argv);
}
Local<Value> MakeCallback(Isolate* isolate,
Local<Object> recv,
const char* method,
int argc,
Local<Value> argv[]) {
EscapableHandleScope handle_scope(isolate);
Local<String> method_string = OneByteString(isolate, method);
return handle_scope.Escape(
MakeCallback(isolate, recv, method_string, argc, argv));
}
Local<Value> MakeCallback(Isolate* isolate,
Local<Object> recv,
Local<String> symbol,
int argc,
Local<Value> argv[]) {
EscapableHandleScope handle_scope(isolate);
Local<Value> callback_v = recv->Get(symbol);
if (callback_v.IsEmpty()) return Local<Value>();
if (!callback_v->IsFunction()) return Local<Value>();
Local<Function> callback = callback_v.As<Function>();
return handle_scope.Escape(MakeCallback(isolate, recv, callback, argc, argv));
}
Local<Value> MakeCallback(Isolate* isolate,
Local<Object> recv,
Local<Function> callback,
int argc,
Local<Value> argv[]) {
// Observe the following two subtleties:
//
// 1. The environment is retrieved from the callback function's context.
// 2. The context to enter is retrieved from the environment.
//
// Because of the AssignToContext() call in src/node_contextify.cc,
// the two contexts need not be the same.
EscapableHandleScope handle_scope(isolate);
Environment* env = Environment::GetCurrent(callback->CreationContext());
Context::Scope context_scope(env->context());
return handle_scope.Escape(
MakeCallback(env, recv.As<Value>(), callback, argc, argv));
}
enum encoding ParseEncoding(const char* encoding,
enum encoding default_encoding) {
switch (encoding[0]) {
case 'u':
// utf8, utf16le
if (encoding[1] == 't' && encoding[2] == 'f') {
// Skip `-`
encoding += encoding[3] == '-' ? 4 : 3;
if (encoding[0] == '8' && encoding[1] == '\0')
return UTF8;
if (strncmp(encoding, "16le", 4) == 0)
return UCS2;
// ucs2
} else if (encoding[1] == 'c' && encoding[2] == 's') {
encoding += encoding[3] == '-' ? 4 : 3;
if (encoding[0] == '2' && encoding[1] == '\0')
return UCS2;
}
break;
case 'l':
// latin1
if (encoding[1] == 'a') {
if (strncmp(encoding + 2, "tin1", 4) == 0)
return LATIN1;
}
break;
case 'b':
// binary
if (encoding[1] == 'i') {
if (strncmp(encoding + 2, "nary", 4) == 0)
return LATIN1;
// buffer
} else if (encoding[1] == 'u') {
if (strncmp(encoding + 2, "ffer", 4) == 0)
return BUFFER;
}
break;
case '\0':
return default_encoding;
default:
break;
}
if (StringEqualNoCase(encoding, "utf8")) {
return UTF8;
} else if (StringEqualNoCase(encoding, "utf-8")) {
return UTF8;
} else if (StringEqualNoCase(encoding, "ascii")) {
return ASCII;
} else if (StringEqualNoCase(encoding, "base64")) {
return BASE64;
} else if (StringEqualNoCase(encoding, "ucs2")) {
return UCS2;
} else if (StringEqualNoCase(encoding, "ucs-2")) {
return UCS2;
} else if (StringEqualNoCase(encoding, "utf16le")) {
return UCS2;
} else if (StringEqualNoCase(encoding, "utf-16le")) {
return UCS2;
} else if (StringEqualNoCase(encoding, "latin1")) {
return LATIN1;
} else if (StringEqualNoCase(encoding, "binary")) {
return LATIN1; // BINARY is a deprecated alias of LATIN1.
} else if (StringEqualNoCase(encoding, "buffer")) {
return BUFFER;
} else if (StringEqualNoCase(encoding, "hex")) {
return HEX;
} else {
return default_encoding;
}
}
enum encoding ParseEncoding(Isolate* isolate,
Local<Value> encoding_v,
enum encoding default_encoding) {
if (!encoding_v->IsString())
return default_encoding;
node::Utf8Value encoding(isolate, encoding_v);
return ParseEncoding(*encoding, default_encoding);
}
Local<Value> Encode(Isolate* isolate,
const char* buf,
size_t len,
enum encoding encoding) {
CHECK_NE(encoding, UCS2);
return StringBytes::Encode(isolate, buf, len, encoding);
}
Local<Value> Encode(Isolate* isolate, const uint16_t* buf, size_t len) {
return StringBytes::Encode(isolate, buf, len);
}
// Returns -1 if the handle was not valid for decoding
ssize_t DecodeBytes(Isolate* isolate,
Local<Value> val,
enum encoding encoding) {
HandleScope scope(isolate);
return StringBytes::Size(isolate, val, encoding);
}
// Returns number of bytes written.
ssize_t DecodeWrite(Isolate* isolate,
char* buf,
size_t buflen,
Local<Value> val,
enum encoding encoding) {
return StringBytes::Write(isolate, buf, buflen, val, encoding, nullptr);
}
bool IsExceptionDecorated(Environment* env, Local<Value> er) {
if (!er.IsEmpty() && er->IsObject()) {
Local<Object> err_obj = er.As<Object>();
auto maybe_value =
err_obj->GetPrivate(env->context(), env->decorated_private_symbol());
Local<Value> decorated;
return maybe_value.ToLocal(&decorated) && decorated->IsTrue();
}
return false;
}
void AppendExceptionLine(Environment* env,
Local<Value> er,
Local<Message> message,
enum ErrorHandlingMode mode) {
if (message.IsEmpty())
return;
HandleScope scope(env->isolate());
Local<Object> err_obj;
if (!er.IsEmpty() && er->IsObject()) {
err_obj = er.As<Object>();
auto context = env->context();
auto processed_private_symbol = env->processed_private_symbol();
// Do it only once per message
if (err_obj->HasPrivate(context, processed_private_symbol).FromJust())
return;
err_obj->SetPrivate(
context,
processed_private_symbol,
True(env->isolate()));
}
// Print (filename):(line number): (message).
node::Utf8Value filename(env->isolate(), message->GetScriptResourceName());
const char* filename_string = *filename;
int linenum = message->GetLineNumber();
// Print line of source code.
node::Utf8Value sourceline(env->isolate(), message->GetSourceLine());
const char* sourceline_string = *sourceline;
// Because of how node modules work, all scripts are wrapped with a
// "function (module, exports, __filename, ...) {"
// to provide script local variables.
//
// When reporting errors on the first line of a script, this wrapper
// function is leaked to the user. There used to be a hack here to
// truncate off the first 62 characters, but it caused numerous other
// problems when vm.runIn*Context() methods were used for non-module
// code.
//
// If we ever decide to re-instate such a hack, the following steps
// must be taken:
//
// 1. Pass a flag around to say "this code was wrapped"
// 2. Update the stack frame output so that it is also correct.
//
// It would probably be simpler to add a line rather than add some
// number of characters to the first line, since V8 truncates the
// sourceline to 78 characters, and we end up not providing very much
// useful debugging info to the user if we remove 62 characters.
int start = message->GetStartColumn(env->context()).FromMaybe(0);
int end = message->GetEndColumn(env->context()).FromMaybe(0);
char arrow[1024];
int max_off = sizeof(arrow) - 2;
int off = snprintf(arrow,
sizeof(arrow),
"%s:%i\n%s\n",
filename_string,
linenum,
sourceline_string);
CHECK_GE(off, 0);
if (off > max_off) {
off = max_off;
}
// Print wavy underline (GetUnderline is deprecated).
for (int i = 0; i < start; i++) {
if (sourceline_string[i] == '\0' || off >= max_off) {
break;
}
CHECK_LT(off, max_off);
arrow[off++] = (sourceline_string[i] == '\t') ? '\t' : ' ';
}
for (int i = start; i < end; i++) {
if (sourceline_string[i] == '\0' || off >= max_off) {
break;
}
CHECK_LT(off, max_off);
arrow[off++] = '^';
}
CHECK_LE(off, max_off);
arrow[off] = '\n';
arrow[off + 1] = '\0';
Local<String> arrow_str = String::NewFromUtf8(env->isolate(), arrow);
const bool can_set_arrow = !arrow_str.IsEmpty() && !err_obj.IsEmpty();
// If allocating arrow_str failed, print it out. There's not much else to do.
// If it's not an error, but something needs to be printed out because
// it's a fatal exception, also print it out from here.
// Otherwise, the arrow property will be attached to the object and handled
// by the caller.
if (!can_set_arrow || (mode == FATAL_ERROR && !err_obj->IsNativeError())) {
if (env->printed_error())
return;
env->set_printed_error(true);
uv_tty_reset_mode();
PrintErrorString("\n%s", arrow);
return;
}
CHECK(err_obj->SetPrivate(
env->context(),
env->arrow_message_private_symbol(),
arrow_str).FromMaybe(false));
}
static void ReportException(Environment* env,
Local<Value> er,
Local<Message> message) {
HandleScope scope(env->isolate());
AppendExceptionLine(env, er, message, FATAL_ERROR);
Local<Value> trace_value;
Local<Value> arrow;
const bool decorated = IsExceptionDecorated(env, er);
if (er->IsUndefined() || er->IsNull()) {
trace_value = Undefined(env->isolate());
} else {
Local<Object> err_obj = er->ToObject(env->isolate());
trace_value = err_obj->Get(env->stack_string());
arrow =
err_obj->GetPrivate(
env->context(),
env->arrow_message_private_symbol()).ToLocalChecked();
}
node::Utf8Value trace(env->isolate(), trace_value);
// range errors have a trace member set to undefined
if (trace.length() > 0 && !trace_value->IsUndefined()) {
if (arrow.IsEmpty() || !arrow->IsString() || decorated) {
PrintErrorString("%s\n", *trace);
} else {
node::Utf8Value arrow_string(env->isolate(), arrow);
PrintErrorString("%s\n%s\n", *arrow_string, *trace);
}
} else {
// this really only happens for RangeErrors, since they're the only
// kind that won't have all this info in the trace, or when non-Error
// objects are thrown manually.
Local<Value> message;
Local<Value> name;
if (er->IsObject()) {
Local<Object> err_obj = er.As<Object>();
message = err_obj->Get(env->message_string());
name = err_obj->Get(FIXED_ONE_BYTE_STRING(env->isolate(), "name"));
}
if (message.IsEmpty() ||
message->IsUndefined() ||
name.IsEmpty() ||
name->IsUndefined()) {
// Not an error object. Just print as-is.
String::Utf8Value message(er);
PrintErrorString("%s\n", *message ? *message :
"<toString() threw exception>");
} else {
node::Utf8Value name_string(env->isolate(), name);
node::Utf8Value message_string(env->isolate(), message);
if (arrow.IsEmpty() || !arrow->IsString() || decorated) {
PrintErrorString("%s: %s\n", *name_string, *message_string);
} else {
node::Utf8Value arrow_string(env->isolate(), arrow);
PrintErrorString("%s\n%s: %s\n",
*arrow_string,
*name_string,
*message_string);
}
}
}
fflush(stderr);
}
static void ReportException(Environment* env, const TryCatch& try_catch) {
ReportException(env, try_catch.Exception(), try_catch.Message());
}
// Executes a str within the current v8 context.
static Local<Value> ExecuteString(Environment* env,
Local<String> source,
Local<String> filename) {
EscapableHandleScope scope(env->isolate());
TryCatch try_catch(env->isolate());
// try_catch must be nonverbose to disable FatalException() handler,
// we will handle exceptions ourself.
try_catch.SetVerbose(false);
ScriptOrigin origin(filename);
MaybeLocal<v8::Script> script =
v8::Script::Compile(env->context(), source, &origin);
if (script.IsEmpty()) {
ReportException(env, try_catch);
exit(3);
}
Local<Value> result = script.ToLocalChecked()->Run();
if (result.IsEmpty()) {
ReportException(env, try_catch);
exit(4);
}
return scope.Escape(result);
}
static void GetActiveRequests(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);
Local<Array> ary = Array::New(args.GetIsolate());
Local<Context> ctx = env->context();
Local<Function> fn = env->push_values_to_array_function();
Local<Value> argv[NODE_PUSH_VAL_TO_ARRAY_MAX];
size_t idx = 0;
for (auto w : *env->req_wrap_queue()) {
if (w->persistent().IsEmpty())
continue;
argv[idx] = w->object();
if (++idx >= arraysize(argv)) {
fn->Call(ctx, ary, idx, argv).ToLocalChecked();
idx = 0;
}
}
if (idx > 0) {
fn->Call(ctx, ary, idx, argv).ToLocalChecked();
}
args.GetReturnValue().Set(ary);
}
// Non-static, friend of HandleWrap. Could have been a HandleWrap method but
// implemented here for consistency with GetActiveRequests().
void GetActiveHandles(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);
Local<Array> ary = Array::New(env->isolate());
Local<Context> ctx = env->context();
Local<Function> fn = env->push_values_to_array_function();
Local<Value> argv[NODE_PUSH_VAL_TO_ARRAY_MAX];
size_t idx = 0;
Local<String> owner_sym = env->owner_string();
for (auto w : *env->handle_wrap_queue()) {
if (w->persistent().IsEmpty() || !HandleWrap::HasRef(w))
continue;
Local<Object> object = w->object();
Local<Value> owner = object->Get(owner_sym);
if (owner->IsUndefined())
owner = object;
argv[idx] = owner;
if (++idx >= arraysize(argv)) {
fn->Call(ctx, ary, idx, argv).ToLocalChecked();
idx = 0;
}
}
if (idx > 0) {
fn->Call(ctx, ary, idx, argv).ToLocalChecked();
}
args.GetReturnValue().Set(ary);
}
NO_RETURN void Abort() {
DumpBacktrace(stderr);
fflush(stderr);
ABORT_NO_BACKTRACE();
}
NO_RETURN void Assert(const char* const (*args)[4]) {
auto filename = (*args)[0];
auto linenum = (*args)[1];
auto message = (*args)[2];
auto function = (*args)[3];
char exepath[256];
size_t exepath_size = sizeof(exepath);
if (uv_exepath(exepath, &exepath_size))
snprintf(exepath, sizeof(exepath), "node");
char pid[12] = {0};
#ifndef _WIN32
snprintf(pid, sizeof(pid), "[%u]", getpid());
#endif
fprintf(stderr, "%s%s: %s:%s:%s%s Assertion `%s' failed.\n",
exepath, pid, filename, linenum,
function, *function ? ":" : "", message);
fflush(stderr);
Abort();
}
static void Abort(const FunctionCallbackInfo<Value>& args) {
Abort();
}
static void Chdir(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);
if (args.Length() != 1 || !args[0]->IsString()) {
return env->ThrowTypeError("Bad argument.");
}
node::Utf8Value path(args.GetIsolate(), args[0]);
int err = uv_chdir(*path);
if (err) {
return env->ThrowUVException(err, "uv_chdir");
}
}
static void Cwd(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);
#ifdef _WIN32
/* MAX_PATH is in characters, not bytes. Make sure we have enough headroom. */
char buf[MAX_PATH * 4];
#else
char buf[PATH_MAX];
#endif
size_t cwd_len = sizeof(buf);
int err = uv_cwd(buf, &cwd_len);
if (err) {
return env->ThrowUVException(err, "uv_cwd");
}
Local<String> cwd = String::NewFromUtf8(env->isolate(),
buf,
String::kNormalString,
cwd_len);
args.GetReturnValue().Set(cwd);
}
static void Umask(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);
uint32_t old;
if (args.Length() < 1 || args[0]->IsUndefined()) {
old = umask(0);
umask(static_cast<mode_t>(old));
} else if (!args[0]->IsInt32() && !args[0]->IsString()) {
return env->ThrowTypeError("argument must be an integer or octal string.");
} else {
int oct;
if (args[0]->IsInt32()) {
oct = args[0]->Uint32Value();
} else {
oct = 0;
node::Utf8Value str(env->isolate(), args[0]);
// Parse the octal string.
for (size_t i = 0; i < str.length(); i++) {
char c = (*str)[i];
if (c > '7' || c < '0') {
return env->ThrowTypeError("invalid octal string");
}
oct *= 8;
oct += c - '0';
}
}
old = umask(static_cast<mode_t>(oct));
}
args.GetReturnValue().Set(old);
}
#if defined(__POSIX__) && !defined(__ANDROID__)
static const uid_t uid_not_found = static_cast<uid_t>(-1);
static const gid_t gid_not_found = static_cast<gid_t>(-1);
static uid_t uid_by_name(const char* name) {
struct passwd pwd;
struct passwd* pp;
char buf[8192];
errno = 0;
pp = nullptr;
if (getpwnam_r(name, &pwd, buf, sizeof(buf), &pp) == 0 && pp != nullptr) {
return pp->pw_uid;
}
return uid_not_found;
}
static char* name_by_uid(uid_t uid) {
struct passwd pwd;
struct passwd* pp;
char buf[8192];
int rc;
errno = 0;
pp = nullptr;
if ((rc = getpwuid_r(uid, &pwd, buf, sizeof(buf), &pp)) == 0 &&
pp != nullptr) {
return strdup(pp->pw_name);
}
if (rc == 0) {
errno = ENOENT;
}
return nullptr;
}
static gid_t gid_by_name(const char* name) {
struct group pwd;
struct group* pp;
char buf[8192];
errno = 0;
pp = nullptr;
if (getgrnam_r(name, &pwd, buf, sizeof(buf), &pp) == 0 && pp != nullptr) {
return pp->gr_gid;
}
return gid_not_found;
}
#if 0 // For future use.
static const char* name_by_gid(gid_t gid) {
struct group pwd;
struct group* pp;
char buf[8192];
int rc;
errno = 0;
pp = nullptr;
if ((rc = getgrgid_r(gid, &pwd, buf, sizeof(buf), &pp)) == 0 &&
pp != nullptr) {
return strdup(pp->gr_name);
}
if (rc == 0) {
errno = ENOENT;
}
return nullptr;
}
#endif
static uid_t uid_by_name(Isolate* isolate, Local<Value> value) {
if (value->IsUint32()) {
return static_cast<uid_t>(value->Uint32Value());
} else {
node::Utf8Value name(isolate, value);
return uid_by_name(*name);
}
}
static gid_t gid_by_name(Isolate* isolate, Local<Value> value) {
if (value->IsUint32()) {
return static_cast<gid_t>(value->Uint32Value());
} else {
node::Utf8Value name(isolate, value);
return gid_by_name(*name);
}
}
static void GetUid(const FunctionCallbackInfo<Value>& args) {
// uid_t is an uint32_t on all supported platforms.
args.GetReturnValue().Set(static_cast<uint32_t>(getuid()));
}
static void GetGid(const FunctionCallbackInfo<Value>& args) {
// gid_t is an uint32_t on all supported platforms.
args.GetReturnValue().Set(static_cast<uint32_t>(getgid()));
}
static void GetEUid(const FunctionCallbackInfo<Value>& args) {
// uid_t is an uint32_t on all supported platforms.
args.GetReturnValue().Set(static_cast<uint32_t>(geteuid()));
}
static void GetEGid(const FunctionCallbackInfo<Value>& args) {
// gid_t is an uint32_t on all supported platforms.
args.GetReturnValue().Set(static_cast<uint32_t>(getegid()));
}
static void SetGid(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);
if (!args[0]->IsUint32() && !args[0]->IsString()) {
return env->ThrowTypeError("setgid argument must be a number or a string");
}
gid_t gid = gid_by_name(env->isolate(), args[0]);
if (gid == gid_not_found) {
return env->ThrowError("setgid group id does not exist");
}
if (setgid(gid)) {
return env->ThrowErrnoException(errno, "setgid");
}
}
static void SetEGid(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);
if (!args[0]->IsUint32() && !args[0]->IsString()) {
return env->ThrowTypeError("setegid argument must be a number or string");
}
gid_t gid = gid_by_name(env->isolate(), args[0]);
if (gid == gid_not_found) {
return env->ThrowError("setegid group id does not exist");
}
if (setegid(gid)) {
return env->ThrowErrnoException(errno, "setegid");
}
}
static void SetUid(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);
if (!args[0]->IsUint32() && !args[0]->IsString()) {
return env->ThrowTypeError("setuid argument must be a number or a string");
}
uid_t uid = uid_by_name(env->isolate(), args[0]);
if (uid == uid_not_found) {
return env->ThrowError("setuid user id does not exist");
}
if (setuid(uid)) {
return env->ThrowErrnoException(errno, "setuid");
}
}
static void SetEUid(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);
if (!args[0]->IsUint32() && !args[0]->IsString()) {
return env->ThrowTypeError("seteuid argument must be a number or string");
}
uid_t uid = uid_by_name(env->isolate(), args[0]);
if (uid == uid_not_found) {
return env->ThrowError("seteuid user id does not exist");
}
if (seteuid(uid)) {
return env->ThrowErrnoException(errno, "seteuid");
}
}
static void GetGroups(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);
int ngroups = getgroups(0, nullptr);
if (ngroups == -1) {
return env->ThrowErrnoException(errno, "getgroups");
}
gid_t* groups = new gid_t[ngroups];
ngroups = getgroups(ngroups, groups);
if (ngroups == -1) {
delete[] groups;
return env->ThrowErrnoException(errno, "getgroups");
}
Local<Array> groups_list = Array::New(env->isolate(), ngroups);
bool seen_egid = false;
gid_t egid = getegid();
for (int i = 0; i < ngroups; i++) {
groups_list->Set(i, Integer::New(env->isolate(), groups[i]));
if (groups[i] == egid)
seen_egid = true;
}
delete[] groups;
if (seen_egid == false) {
groups_list->Set(ngroups, Integer::New(env->isolate(), egid));
}
args.GetReturnValue().Set(groups_list);
}
static void SetGroups(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);
if (!args[0]->IsArray()) {
return env->ThrowTypeError("argument 1 must be an array");
}
Local<Array> groups_list = args[0].As<Array>();
size_t size = groups_list->Length();
gid_t* groups = new gid_t[size];
for (size_t i = 0; i < size; i++) {
gid_t gid = gid_by_name(env->isolate(), groups_list->Get(i));
if (gid == gid_not_found) {
delete[] groups;
return env->ThrowError("group name not found");
}
groups[i] = gid;
}
int rc = setgroups(size, groups);
delete[] groups;
if (rc == -1) {
return env->ThrowErrnoException(errno, "setgroups");
}
}
static void InitGroups(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);
if (!args[0]->IsUint32() && !args[0]->IsString()) {
return env->ThrowTypeError("argument 1 must be a number or a string");
}
if (!args[1]->IsUint32() && !args[1]->IsString()) {
return env->ThrowTypeError("argument 2 must be a number or a string");
}
node::Utf8Value arg0(env->isolate(), args[0]);
gid_t extra_group;
bool must_free;
char* user;
if (args[0]->IsUint32()) {
user = name_by_uid(args[0]->Uint32Value());
must_free = true;
} else {
user = *arg0;
must_free = false;
}
if (user == nullptr) {
return env->ThrowError("initgroups user not found");
}
extra_group = gid_by_name(env->isolate(), args[1]);
if (extra_group == gid_not_found) {
if (must_free)
free(user);
return env->ThrowError("initgroups extra group not found");
}
int rc = initgroups(user, extra_group);
if (must_free) {
free(user);
}
if (rc) {
return env->ThrowErrnoException(errno, "initgroups");
}
}
#endif // __POSIX__ && !defined(__ANDROID__)
static void WaitForInspectorDisconnect(Environment* env) {
#if HAVE_INSPECTOR
if (env->inspector_agent()->IsConnected()) {
// Restore signal dispositions, the app is done and is no longer
// capable of handling signals.
#if defined(__POSIX__) && !defined(NODE_SHARED_MODE)
struct sigaction act;
memset(&act, 0, sizeof(act));
for (unsigned nr = 1; nr < kMaxSignal; nr += 1) {
if (nr == SIGKILL || nr == SIGSTOP || nr == SIGPROF)
continue;
act.sa_handler = (nr == SIGPIPE) ? SIG_IGN : SIG_DFL;
CHECK_EQ(0, sigaction(nr, &act, nullptr));
}
#endif
env->inspector_agent()->WaitForDisconnect();
}
#endif
}
void Exit(const FunctionCallbackInfo<Value>& args) {
WaitForInspectorDisconnect(Environment::GetCurrent(args));
exit(args[0]->Int32Value());
}
static void Uptime(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);
double uptime;
uv_update_time(env->event_loop());
uptime = uv_now(env->event_loop()) - prog_start_time;
args.GetReturnValue().Set(Number::New(env->isolate(), uptime / 1000));
}
void MemoryUsage(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);
size_t rss;
int err = uv_resident_set_memory(&rss);
if (err) {
return env->ThrowUVException(err, "uv_resident_set_memory");
}
Isolate* isolate = env->isolate();
// V8 memory usage
HeapStatistics v8_heap_stats;
isolate->GetHeapStatistics(&v8_heap_stats);
// Get the double array pointer from the Float64Array argument.
CHECK(args[0]->IsFloat64Array());
Local<Float64Array> array = args[0].As<Float64Array>();
CHECK_EQ(array->Length(), 4);
Local<ArrayBuffer> ab = array->Buffer();
double* fields = static_cast<double*>(ab->GetContents().Data());
fields[0] = rss;
fields[1] = v8_heap_stats.total_heap_size();
fields[2] = v8_heap_stats.used_heap_size();
fields[3] = isolate->AdjustAmountOfExternalAllocatedMemory(0);
}
void Kill(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);
if (args.Length() != 2) {
return env->ThrowError("Bad argument.");
}
int pid = args[0]->Int32Value();
int sig = args[1]->Int32Value();
int err = uv_kill(pid, sig);
args.GetReturnValue().Set(err);
}
// used in Hrtime() below
#define NANOS_PER_SEC 1000000000
// Hrtime exposes libuv's uv_hrtime() high-resolution timer.
// The value returned by uv_hrtime() is a 64-bit int representing nanoseconds,
// so this function instead fills in an Uint32Array with 3 entries,
// to avoid any integer overflow possibility.
// The first two entries contain the second part of the value
// broken into the upper/lower 32 bits to be converted back in JS,
// because there is no Uint64Array in JS.
// The third entry contains the remaining nanosecond part of the value.
void Hrtime(const FunctionCallbackInfo<Value>& args) {
uint64_t t = uv_hrtime();
Local<ArrayBuffer> ab = args[0].As<Uint32Array>()->Buffer();
uint32_t* fields = static_cast<uint32_t*>(ab->GetContents().Data());
fields[0] = (t / NANOS_PER_SEC) >> 32;
fields[1] = (t / NANOS_PER_SEC) & 0xffffffff;
fields[2] = t % NANOS_PER_SEC;
}
// Microseconds in a second, as a float, used in CPUUsage() below
#define MICROS_PER_SEC 1e6
// CPUUsage use libuv's uv_getrusage() this-process resource usage accessor,
// to access ru_utime (user CPU time used) and ru_stime (system CPU time used),
// which are uv_timeval_t structs (long tv_sec, long tv_usec).
// Returns those values as Float64 microseconds in the elements of the array
// passed to the function.
void CPUUsage(const FunctionCallbackInfo<Value>& args) {
uv_rusage_t rusage;
// Call libuv to get the values we'll return.
int err = uv_getrusage(&rusage);
if (err) {
// On error, return the strerror version of the error code.
Local<String> errmsg = OneByteString(args.GetIsolate(), uv_strerror(err));
args.GetReturnValue().Set(errmsg);
return;
}
// Get the double array pointer from the Float64Array argument.
CHECK(args[0]->IsFloat64Array());
Local<Float64Array> array = args[0].As<Float64Array>();
CHECK_EQ(array->Length(), 2);
Local<ArrayBuffer> ab = array->Buffer();
double* fields = static_cast<double*>(ab->GetContents().Data());
// Set the Float64Array elements to be user / system values in microseconds.
fields[0] = MICROS_PER_SEC * rusage.ru_utime.tv_sec + rusage.ru_utime.tv_usec;
fields[1] = MICROS_PER_SEC * rusage.ru_stime.tv_sec + rusage.ru_stime.tv_usec;
}
extern "C" void node_module_register(void* m) {
struct node_module* mp = reinterpret_cast<struct node_module*>(m);
if (mp->nm_flags & NM_F_BUILTIN) {
mp->nm_link = modlist_builtin;
modlist_builtin = mp;
} else if (!node_is_initialized) {
// "Linked" modules are included as part of the node project.
// Like builtins they are registered *before* node::Init runs.
mp->nm_flags = NM_F_LINKED;
mp->nm_link = modlist_linked;
modlist_linked = mp;
} else {
modpending = mp;
}
}
struct node_module* get_builtin_module(const char* name) {
struct node_module* mp;
for (mp = modlist_builtin; mp != nullptr; mp = mp->nm_link) {
if (strcmp(mp->nm_modname, name) == 0)
break;
}
CHECK(mp == nullptr || (mp->nm_flags & NM_F_BUILTIN) != 0);
return (mp);
}
struct node_module* get_linked_module(const char* name) {
struct node_module* mp;
for (mp = modlist_linked; mp != nullptr; mp = mp->nm_link) {
if (strcmp(mp->nm_modname, name) == 0)
break;
}
CHECK(mp == nullptr || (mp->nm_flags & NM_F_LINKED) != 0);
return mp;
}
// DLOpen is process.dlopen(module, filename).
// Used to load 'module.node' dynamically shared objects.
//
// FIXME(bnoordhuis) Not multi-context ready. TBD how to resolve the conflict
// when two contexts try to load the same shared object. Maybe have a shadow
// cache that's a plain C list or hash table that's shared across contexts?
void DLOpen(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);
uv_lib_t lib;
CHECK_EQ(modpending, nullptr);
if (args.Length() != 2) {
env->ThrowError("process.dlopen takes exactly 2 arguments.");
return;
}
Local<Object> module = args[0]->ToObject(env->isolate()); // Cast
node::Utf8Value filename(env->isolate(), args[1]); // Cast
const bool is_dlopen_error = uv_dlopen(*filename, &lib);
// Objects containing v14 or later modules will have registered themselves
// on the pending list. Activate all of them now. At present, only one
// module per object is supported.
node_module* const mp = modpending;
modpending = nullptr;
if (is_dlopen_error) {
Local<String> errmsg = OneByteString(env->isolate(), uv_dlerror(&lib));
uv_dlclose(&lib);
#ifdef _WIN32
// Windows needs to add the filename into the error message
errmsg = String::Concat(errmsg, args[1]->ToString(env->isolate()));
#endif // _WIN32
env->isolate()->ThrowException(Exception::Error(errmsg));
return;
}
if (mp == nullptr) {
uv_dlclose(&lib);
env->ThrowError("Module did not self-register.");
return;
}
if (mp->nm_version != NODE_MODULE_VERSION) {
char errmsg[1024];
snprintf(errmsg,
sizeof(errmsg),
"The module '%s'"
"\nwas compiled against a different Node.js version using"
"\nNODE_MODULE_VERSION %d. This version of Node.js requires"
"\nNODE_MODULE_VERSION %d. Please try re-compiling or "
"re-installing\nthe module (for instance, using `npm rebuild` or "
"`npm install`).",
*filename, mp->nm_version, NODE_MODULE_VERSION);
// NOTE: `mp` is allocated inside of the shared library's memory, calling
// `uv_dlclose` will deallocate it
uv_dlclose(&lib);
env->ThrowError(errmsg);
return;
}
if (mp->nm_flags & NM_F_BUILTIN) {
uv_dlclose(&lib);
env->ThrowError("Built-in module self-registered.");
return;
}
mp->nm_dso_handle = lib.handle;
mp->nm_link = modlist_addon;
modlist_addon = mp;
Local<String> exports_string = env->exports_string();
Local<Object> exports = module->Get(exports_string)->ToObject(env->isolate());
if (mp->nm_context_register_func != nullptr) {
mp->nm_context_register_func(exports, module, env->context(), mp->nm_priv);
} else if (mp->nm_register_func != nullptr) {
mp->nm_register_func(exports, module, mp->nm_priv);
} else {
uv_dlclose(&lib);
env->ThrowError("Module has no declared entry point.");
return;
}
// Tell coverity that 'handle' should not be freed when we return.
// coverity[leaked_storage]
}
static void OnFatalError(const char* location, const char* message) {
if (location) {
PrintErrorString("FATAL ERROR: %s %s\n", location, message);
} else {
PrintErrorString("FATAL ERROR: %s\n", message);
}
fflush(stderr);
ABORT();
}
NO_RETURN void FatalError(const char* location, const char* message) {
OnFatalError(location, message);
// to suppress compiler warning
ABORT();
}
void FatalException(Isolate* isolate,
Local<Value> error,
Local<Message> message) {
HandleScope scope(isolate);
Environment* env = Environment::GetCurrent(isolate);
Local<Object> process_object = env->process_object();
Local<String> fatal_exception_string = env->fatal_exception_string();
Local<Function> fatal_exception_function =
process_object->Get(fatal_exception_string).As<Function>();
int exit_code = 0;
if (!fatal_exception_function->IsFunction()) {
// failed before the process._fatalException function was added!
// this is probably pretty bad. Nothing to do but report and exit.
ReportException(env, error, message);
exit_code = 6;
}
if (exit_code == 0) {
TryCatch fatal_try_catch(isolate);
// Do not call FatalException when _fatalException handler throws
fatal_try_catch.SetVerbose(false);
// this will return true if the JS layer handled it, false otherwise
Local<Value> caught =
fatal_exception_function->Call(process_object, 1, &error);
if (fatal_try_catch.HasCaught()) {
// the fatal exception function threw, so we must exit
ReportException(env, fatal_try_catch);
exit_code = 7;
}
if (exit_code == 0 && false == caught->BooleanValue()) {
ReportException(env, error, message);
exit_code = 1;
}
}
if (exit_code) {
#if HAVE_INSPECTOR
if (debug_options.inspector_enabled()) {
env->inspector_agent()->FatalException(error, message);
}
#endif
exit(exit_code);
}
}
void FatalException(Isolate* isolate, const TryCatch& try_catch) {
HandleScope scope(isolate);
// TODO(bajtos) do not call FatalException if try_catch is verbose
// (requires V8 API to expose getter for try_catch.is_verbose_)
FatalException(isolate, try_catch.Exception(), try_catch.Message());
}
void OnMessage(Local<Message> message, Local<Value> error) {
// The current version of V8 sends messages for errors only
// (thus `error` is always set).
FatalException(Isolate::GetCurrent(), error, message);
}
void ClearFatalExceptionHandlers(Environment* env) {
Local<Object> process = env->process_object();
Local<Value> events =
process->Get(env->context(), env->events_string()).ToLocalChecked();
if (events->IsObject()) {
events.As<Object>()->Set(
env->context(),
OneByteString(env->isolate(), "uncaughtException"),
Undefined(env->isolate())).FromJust();
}
process->Set(
env->context(),
env->domain_string(),
Undefined(env->isolate())).FromJust();
}
// Call process.emitWarning(str), fmt is a snprintf() format string
void ProcessEmitWarning(Environment* env, const char* fmt, ...) {
char warning[1024];
va_list ap;
va_start(ap, fmt);
vsnprintf(warning, sizeof(warning), fmt, ap);
va_end(ap);
HandleScope handle_scope(env->isolate());
Context::Scope context_scope(env->context());
Local<Object> process = env->process_object();
MaybeLocal<Value> emit_warning = process->Get(env->context(),
FIXED_ONE_BYTE_STRING(env->isolate(), "emitWarning"));
Local<Value> arg = node::OneByteString(env->isolate(), warning);
Local<Value> f;
if (!emit_warning.ToLocal(&f)) return;
if (!f->IsFunction()) return;
// MakeCallback() unneeded, because emitWarning is internal code, it calls
// process.emit('warning', ..), but does so on the nextTick.
f.As<v8::Function>()->Call(process, 1, &arg);
}
static void Binding(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);
Local<String> module = args[0]->ToString(env->isolate());
node::Utf8Value module_v(env->isolate(), module);
Local<Object> cache = env->binding_cache_object();
Local<Object> exports;
if (cache->Has(env->context(), module).FromJust()) {
exports = cache->Get(module)->ToObject(env->isolate());
args.GetReturnValue().Set(exports);
return;
}
// Append a string to process.moduleLoadList
char buf[1024];
snprintf(buf, sizeof(buf), "Binding %s", *module_v);
Local<Array> modules = env->module_load_list_array();
uint32_t l = modules->Length();
modules->Set(l, OneByteString(env->isolate(), buf));
node_module* mod = get_builtin_module(*module_v);
if (mod != nullptr) {
exports = Object::New(env->isolate());
// Internal bindings don't have a "module" object, only exports.
CHECK_EQ(mod->nm_register_func, nullptr);
CHECK_NE(mod->nm_context_register_func, nullptr);
Local<Value> unused = Undefined(env->isolate());
mod->nm_context_register_func(exports, unused,
env->context(), mod->nm_priv);
cache->Set(module, exports);
} else if (!strcmp(*module_v, "constants")) {
exports = Object::New(env->isolate());
DefineConstants(env->isolate(), exports);
cache->Set(module, exports);
} else if (!strcmp(*module_v, "natives")) {
exports = Object::New(env->isolate());
DefineJavaScript(env, exports);
cache->Set(module, exports);
} else {
char errmsg[1024];
snprintf(errmsg,
sizeof(errmsg),
"No such module: %s",
*module_v);
return env->ThrowError(errmsg);
}
args.GetReturnValue().Set(exports);
}
static void LinkedBinding(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args.GetIsolate());
Local<String> module_name = args[0]->ToString(env->isolate());
Local<Object> cache = env->binding_cache_object();
Local<Value> exports_v = cache->Get(module_name);
if (exports_v->IsObject())
return args.GetReturnValue().Set(exports_v.As<Object>());
node::Utf8Value module_name_v(env->isolate(), module_name);
node_module* mod = get_linked_module(*module_name_v);
if (mod == nullptr) {
char errmsg[1024];
snprintf(errmsg,
sizeof(errmsg),
"No such module was linked: %s",
*module_name_v);
return env->ThrowError(errmsg);
}
Local<Object> module = Object::New(env->isolate());
Local<Object> exports = Object::New(env->isolate());
Local<String> exports_prop = String::NewFromUtf8(env->isolate(), "exports");
module->Set(exports_prop, exports);
if (mod->nm_context_register_func != nullptr) {
mod->nm_context_register_func(exports,
module,
env->context(),
mod->nm_priv);
} else if (mod->nm_register_func != nullptr) {
mod->nm_register_func(exports, module, mod->nm_priv);
} else {
return env->ThrowError("Linked module has no declared entry point.");
}
auto effective_exports = module->Get(exports_prop);
cache->Set(module_name, effective_exports);
args.GetReturnValue().Set(effective_exports);
}
static void ProcessTitleGetter(Local<Name> property,
const PropertyCallbackInfo<Value>& info) {
char buffer[512];
uv_get_process_title(buffer, sizeof(buffer));
info.GetReturnValue().Set(String::NewFromUtf8(info.GetIsolate(), buffer));
}
static void ProcessTitleSetter(Local<Name> property,
Local<Value> value,
const PropertyCallbackInfo<void>& info) {
node::Utf8Value title(info.GetIsolate(), value);
// TODO(piscisaureus): protect with a lock
uv_set_process_title(*title);
}
static void EnvGetter(Local<Name> property,
const PropertyCallbackInfo<Value>& info) {
Isolate* isolate = info.GetIsolate();
if (property->IsSymbol()) {
return info.GetReturnValue().SetUndefined();
}
#ifdef __POSIX__
node::Utf8Value key(isolate, property);
const char* val = getenv(*key);
if (val) {
return info.GetReturnValue().Set(String::NewFromUtf8(isolate, val));
}
#else // _WIN32
node::TwoByteValue key(isolate, property);
WCHAR buffer[32767]; // The maximum size allowed for environment variables.
DWORD result = GetEnvironmentVariableW(reinterpret_cast<WCHAR*>(*key),
buffer,
arraysize(buffer));
// If result >= sizeof buffer the buffer was too small. That should never
// happen. If result == 0 and result != ERROR_SUCCESS the variable was not
// not found.
if ((result > 0 || GetLastError() == ERROR_SUCCESS) &&
result < arraysize(buffer)) {
const uint16_t* two_byte_buffer = reinterpret_cast<const uint16_t*>(buffer);
Local<String> rc = String::NewFromTwoByte(isolate, two_byte_buffer);
return info.GetReturnValue().Set(rc);
}
#endif
}
static void EnvSetter(Local<Name> property,
Local<Value> value,
const PropertyCallbackInfo<Value>& info) {
#ifdef __POSIX__
node::Utf8Value key(info.GetIsolate(), property);
node::Utf8Value val(info.GetIsolate(), value);
setenv(*key, *val, 1);
#else // _WIN32
node::TwoByteValue key(info.GetIsolate(), property);
node::TwoByteValue val(info.GetIsolate(), value);
WCHAR* key_ptr = reinterpret_cast<WCHAR*>(*key);
// Environment variables that start with '=' are read-only.
if (key_ptr[0] != L'=') {
SetEnvironmentVariableW(key_ptr, reinterpret_cast<WCHAR*>(*val));
}
#endif
// Whether it worked or not, always return value.
info.GetReturnValue().Set(value);
}
static void EnvQuery(Local<Name> property,
const PropertyCallbackInfo<Integer>& info) {
int32_t rc = -1; // Not found unless proven otherwise.
if (property->IsString()) {
#ifdef __POSIX__
node::Utf8Value key(info.GetIsolate(), property);
if (getenv(*key))
rc = 0;
#else // _WIN32
node::TwoByteValue key(info.GetIsolate(), property);
WCHAR* key_ptr = reinterpret_cast<WCHAR*>(*key);
if (GetEnvironmentVariableW(key_ptr, nullptr, 0) > 0 ||
GetLastError() == ERROR_SUCCESS) {
rc = 0;
if (key_ptr[0] == L'=') {
// Environment variables that start with '=' are hidden and read-only.
rc = static_cast<int32_t>(v8::ReadOnly) |
static_cast<int32_t>(v8::DontDelete) |
static_cast<int32_t>(v8::DontEnum);
}
}
#endif
}
if (rc != -1)
info.GetReturnValue().Set(rc);
}
static void EnvDeleter(Local<Name> property,
const PropertyCallbackInfo<Boolean>& info) {
if (property->IsString()) {
#ifdef __POSIX__
node::Utf8Value key(info.GetIsolate(), property);
unsetenv(*key);
#else
node::TwoByteValue key(info.GetIsolate(), property);
WCHAR* key_ptr = reinterpret_cast<WCHAR*>(*key);
SetEnvironmentVariableW(key_ptr, nullptr);
#endif
}
// process.env never has non-configurable properties, so always
// return true like the tc39 delete operator.
info.GetReturnValue().Set(true);
}
static void EnvEnumerator(const PropertyCallbackInfo<Array>& info) {
Environment* env = Environment::GetCurrent(info);
Isolate* isolate = env->isolate();
Local<Context> ctx = env->context();
Local<Function> fn = env->push_values_to_array_function();
Local<Value> argv[NODE_PUSH_VAL_TO_ARRAY_MAX];
size_t idx = 0;
#ifdef __POSIX__
int size = 0;
while (environ[size])
size++;
Local<Array> envarr = Array::New(isolate);
for (int i = 0; i < size; ++i) {
const char* var = environ[i];
const char* s = strchr(var, '=');
const int length = s ? s - var : strlen(var);
argv[idx] = String::NewFromUtf8(isolate,
var,
String::kNormalString,
length);
if (++idx >= arraysize(argv)) {
fn->Call(ctx, envarr, idx, argv).ToLocalChecked();
idx = 0;
}
}
if (idx > 0) {
fn->Call(ctx, envarr, idx, argv).ToLocalChecked();
}
#else // _WIN32
WCHAR* environment = GetEnvironmentStringsW();
if (environment == nullptr)
return; // This should not happen.
Local<Array> envarr = Array::New(isolate);
WCHAR* p = environment;
while (*p) {
WCHAR *s;
if (*p == L'=') {
// If the key starts with '=' it is a hidden environment variable.
p += wcslen(p) + 1;
continue;
} else {
s = wcschr(p, L'=');
}
if (!s) {
s = p + wcslen(p);
}
const uint16_t* two_byte_buffer = reinterpret_cast<const uint16_t*>(p);
const size_t two_byte_buffer_len = s - p;
argv[idx] = String::NewFromTwoByte(isolate,
two_byte_buffer,
String::kNormalString,
two_byte_buffer_len);
if (++idx >= arraysize(argv)) {
fn->Call(ctx, envarr, idx, argv).ToLocalChecked();
idx = 0;
}
p = s + wcslen(s) + 1;
}
if (idx > 0) {
fn->Call(ctx, envarr, idx, argv).ToLocalChecked();
}
FreeEnvironmentStringsW(environment);
#endif
info.GetReturnValue().Set(envarr);
}
static Local<Object> GetFeatures(Environment* env) {
EscapableHandleScope scope(env->isolate());
Local<Object> obj = Object::New(env->isolate());
#if defined(DEBUG) && DEBUG
Local<Value> debug = True(env->isolate());
#else
Local<Value> debug = False(env->isolate());
#endif // defined(DEBUG) && DEBUG
obj->Set(FIXED_ONE_BYTE_STRING(env->isolate(), "debug"), debug);
obj->Set(FIXED_ONE_BYTE_STRING(env->isolate(), "uv"), True(env->isolate()));
// TODO(bnoordhuis) ping libuv
obj->Set(FIXED_ONE_BYTE_STRING(env->isolate(), "ipv6"), True(env->isolate()));
#ifndef OPENSSL_NO_NEXTPROTONEG
Local<Boolean> tls_npn = True(env->isolate());
#else
Local<Boolean> tls_npn = False(env->isolate());
#endif
obj->Set(FIXED_ONE_BYTE_STRING(env->isolate(), "tls_npn"), tls_npn);
#ifdef TLSEXT_TYPE_application_layer_protocol_negotiation
Local<Boolean> tls_alpn = True(env->isolate());
#else
Local<Boolean> tls_alpn = False(env->isolate());
#endif
obj->Set(FIXED_ONE_BYTE_STRING(env->isolate(), "tls_alpn"), tls_alpn);
#ifdef SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
Local<Boolean> tls_sni = True(env->isolate());
#else
Local<Boolean> tls_sni = False(env->isolate());
#endif
obj->Set(FIXED_ONE_BYTE_STRING(env->isolate(), "tls_sni"), tls_sni);
#if !defined(OPENSSL_NO_TLSEXT) && defined(SSL_CTX_set_tlsext_status_cb)
Local<Boolean> tls_ocsp = True(env->isolate());
#else
Local<Boolean> tls_ocsp = False(env->isolate());
#endif // !defined(OPENSSL_NO_TLSEXT) && defined(SSL_CTX_set_tlsext_status_cb)
obj->Set(FIXED_ONE_BYTE_STRING(env->isolate(), "tls_ocsp"), tls_ocsp);
obj->Set(FIXED_ONE_BYTE_STRING(env->isolate(), "tls"),
Boolean::New(env->isolate(),
get_builtin_module("crypto") != nullptr));
return scope.Escape(obj);
}
static void DebugPortGetter(Local<Name> property,
const PropertyCallbackInfo<Value>& info) {
info.GetReturnValue().Set(debug_options.port());
}
static void DebugPortSetter(Local<Name> property,
Local<Value> value,
const PropertyCallbackInfo<void>& info) {
debug_options.set_port(value->Int32Value());
}
static void DebugProcess(const FunctionCallbackInfo<Value>& args);
static void DebugPause(const FunctionCallbackInfo<Value>& args);
static void DebugEnd(const FunctionCallbackInfo<Value>& args);
void NeedImmediateCallbackGetter(Local<Name> property,
const PropertyCallbackInfo<Value>& info) {
Environment* env = Environment::GetCurrent(info);
const uv_check_t* immediate_check_handle = env->immediate_check_handle();
bool active = uv_is_active(
reinterpret_cast<const uv_handle_t*>(immediate_check_handle));
info.GetReturnValue().Set(active);
}
static void NeedImmediateCallbackSetter(
Local<Name> property,
Local<Value> value,
const PropertyCallbackInfo<void>& info) {
Environment* env = Environment::GetCurrent(info);
uv_check_t* immediate_check_handle = env->immediate_check_handle();
bool active = uv_is_active(
reinterpret_cast<const uv_handle_t*>(immediate_check_handle));
if (active == value->BooleanValue())
return;
uv_idle_t* immediate_idle_handle = env->immediate_idle_handle();
if (active) {
uv_check_stop(immediate_check_handle);
uv_idle_stop(immediate_idle_handle);
} else {
uv_check_start(immediate_check_handle, CheckImmediate);
// Idle handle is needed only to stop the event loop from blocking in poll.
uv_idle_start(immediate_idle_handle, IdleImmediateDummy);
}
}
void StartProfilerIdleNotifier(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);
env->StartProfilerIdleNotifier();
}
void StopProfilerIdleNotifier(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);
env->StopProfilerIdleNotifier();
}
#define READONLY_PROPERTY(obj, str, var) \
do { \
obj->DefineOwnProperty(env->context(), \
OneByteString(env->isolate(), str), \
var, \
v8::ReadOnly).FromJust(); \
} while (0)
#define READONLY_DONT_ENUM_PROPERTY(obj, str, var) \
do { \
obj->DefineOwnProperty(env->context(), \
OneByteString(env->isolate(), str), \
var, \
static_cast<v8::PropertyAttribute>(v8::ReadOnly | \
v8::DontEnum)) \
.FromJust(); \
} while (0)
void SetupProcessObject(Environment* env,
int argc,
const char* const* argv,
int exec_argc,
const char* const* exec_argv) {
HandleScope scope(env->isolate());
Local<Object> process = env->process_object();
auto title_string = FIXED_ONE_BYTE_STRING(env->isolate(), "title");
CHECK(process->SetAccessor(env->context(),
title_string,
ProcessTitleGetter,
ProcessTitleSetter,
env->as_external()).FromJust());
// process.version
READONLY_PROPERTY(process,
"version",
FIXED_ONE_BYTE_STRING(env->isolate(), NODE_VERSION));
// process.moduleLoadList
READONLY_PROPERTY(process,
"moduleLoadList",
env->module_load_list_array());
// process.versions
Local<Object> versions = Object::New(env->isolate());
READONLY_PROPERTY(process, "versions", versions);
const char http_parser_version[] = NODE_STRINGIFY(HTTP_PARSER_VERSION_MAJOR)
"."
NODE_STRINGIFY(HTTP_PARSER_VERSION_MINOR)
"."
NODE_STRINGIFY(HTTP_PARSER_VERSION_PATCH);
READONLY_PROPERTY(versions,
"http_parser",
FIXED_ONE_BYTE_STRING(env->isolate(), http_parser_version));
// +1 to get rid of the leading 'v'
READONLY_PROPERTY(versions,
"node",
OneByteString(env->isolate(), NODE_VERSION + 1));
READONLY_PROPERTY(versions,
"v8",
OneByteString(env->isolate(), V8::GetVersion()));
READONLY_PROPERTY(versions,
"uv",
OneByteString(env->isolate(), uv_version_string()));
READONLY_PROPERTY(versions,
"zlib",
FIXED_ONE_BYTE_STRING(env->isolate(), ZLIB_VERSION));
READONLY_PROPERTY(versions,
"ares",
FIXED_ONE_BYTE_STRING(env->isolate(), ARES_VERSION_STR));
const char node_modules_version[] = NODE_STRINGIFY(NODE_MODULE_VERSION);
READONLY_PROPERTY(
versions,
"modules",
FIXED_ONE_BYTE_STRING(env->isolate(), node_modules_version));
// process._promiseRejectEvent
Local<Object> promiseRejectEvent = Object::New(env->isolate());
READONLY_DONT_ENUM_PROPERTY(process,
"_promiseRejectEvent",
promiseRejectEvent);
READONLY_PROPERTY(promiseRejectEvent,
"unhandled",
Integer::New(env->isolate(),
v8::kPromiseRejectWithNoHandler));
READONLY_PROPERTY(promiseRejectEvent,
"handled",
Integer::New(env->isolate(),
v8::kPromiseHandlerAddedAfterReject));
#if HAVE_OPENSSL
// Stupid code to slice out the version string.
{ // NOLINT(whitespace/braces)
size_t i, j, k;
int c;
for (i = j = 0, k = sizeof(OPENSSL_VERSION_TEXT) - 1; i < k; ++i) {
c = OPENSSL_VERSION_TEXT[i];
if ('0' <= c && c <= '9') {
for (j = i + 1; j < k; ++j) {
c = OPENSSL_VERSION_TEXT[j];
if (c == ' ')
break;
}
break;
}
}
READONLY_PROPERTY(
versions,
"openssl",
OneByteString(env->isolate(), &OPENSSL_VERSION_TEXT[i], j - i));
}
#endif
// process.arch
READONLY_PROPERTY(process, "arch", OneByteString(env->isolate(), NODE_ARCH));
// process.platform
READONLY_PROPERTY(process,
"platform",
OneByteString(env->isolate(), NODE_PLATFORM));
// process.release
Local<Object> release = Object::New(env->isolate());
READONLY_PROPERTY(process, "release", release);
READONLY_PROPERTY(release, "name", OneByteString(env->isolate(), "node"));
// if this is a release build and no explicit base has been set
// substitute the standard release download URL
#ifndef NODE_RELEASE_URLBASE
# if NODE_VERSION_IS_RELEASE
# define NODE_RELEASE_URLBASE "https://nodejs.org/download/release/"
# endif
#endif
#if defined(NODE_RELEASE_URLBASE)
# define NODE_RELEASE_URLPFX NODE_RELEASE_URLBASE "v" NODE_VERSION_STRING "/"
# define NODE_RELEASE_URLFPFX NODE_RELEASE_URLPFX "node-v" NODE_VERSION_STRING
READONLY_PROPERTY(release,
"sourceUrl",
OneByteString(env->isolate(),
NODE_RELEASE_URLFPFX ".tar.gz"));
READONLY_PROPERTY(release,
"headersUrl",
OneByteString(env->isolate(),
NODE_RELEASE_URLFPFX "-headers.tar.gz"));
# ifdef _WIN32
READONLY_PROPERTY(release,
"libUrl",
OneByteString(env->isolate(),
strcmp(NODE_ARCH, "ia32") ? NODE_RELEASE_URLPFX "win-"
NODE_ARCH "/node.lib"
: NODE_RELEASE_URLPFX
"win-x86/node.lib"));
# endif
#endif
// process.argv
Local<Array> arguments = Array::New(env->isolate(), argc);
for (int i = 0; i < argc; ++i) {
arguments->Set(i, String::NewFromUtf8(env->isolate(), argv[i]));
}
process->Set(FIXED_ONE_BYTE_STRING(env->isolate(), "argv"), arguments);
// process.execArgv
Local<Array> exec_arguments = Array::New(env->isolate(), exec_argc);
for (int i = 0; i < exec_argc; ++i) {
exec_arguments->Set(i, String::NewFromUtf8(env->isolate(), exec_argv[i]));
}
process->Set(FIXED_ONE_BYTE_STRING(env->isolate(), "execArgv"),
exec_arguments);
// create process.env
Local<ObjectTemplate> process_env_template =
ObjectTemplate::New(env->isolate());
process_env_template->SetHandler(NamedPropertyHandlerConfiguration(
EnvGetter,
EnvSetter,
EnvQuery,
EnvDeleter,
EnvEnumerator,
env->as_external()));
Local<Object> process_env =
process_env_template->NewInstance(env->context()).ToLocalChecked();
process->Set(FIXED_ONE_BYTE_STRING(env->isolate(), "env"), process_env);
READONLY_PROPERTY(process, "pid", Integer::New(env->isolate(), getpid()));
READONLY_PROPERTY(process, "features", GetFeatures(env));
auto need_immediate_callback_string =
FIXED_ONE_BYTE_STRING(env->isolate(), "_needImmediateCallback");
CHECK(process->SetAccessor(env->context(), need_immediate_callback_string,
NeedImmediateCallbackGetter,
NeedImmediateCallbackSetter,
env->as_external()).FromJust());
// -e, --eval
if (eval_string) {
READONLY_PROPERTY(process,
"_eval",
String::NewFromUtf8(env->isolate(), eval_string));
}
// -p, --print
if (print_eval) {
READONLY_PROPERTY(process, "_print_eval", True(env->isolate()));
}
// -c, --check
if (syntax_check_only) {
READONLY_PROPERTY(process, "_syntax_check_only", True(env->isolate()));
}
// -i, --interactive
if (force_repl) {
READONLY_PROPERTY(process, "_forceRepl", True(env->isolate()));
}
if (preload_module_count) {
CHECK(preload_modules);
Local<Array> array = Array::New(env->isolate());
for (unsigned int i = 0; i < preload_module_count; ++i) {
Local<String> module = String::NewFromUtf8(env->isolate(),
preload_modules[i]);
array->Set(i, module);
}
READONLY_PROPERTY(process,
"_preload_modules",
array);
delete[] preload_modules;
preload_modules = nullptr;
preload_module_count = 0;
}
// --no-deprecation
if (no_deprecation) {
READONLY_PROPERTY(process, "noDeprecation", True(env->isolate()));
}
if (no_process_warnings) {
READONLY_PROPERTY(process, "noProcessWarnings", True(env->isolate()));
}
if (trace_warnings) {
READONLY_PROPERTY(process, "traceProcessWarnings", True(env->isolate()));
}
// --throw-deprecation
if (throw_deprecation) {
READONLY_PROPERTY(process, "throwDeprecation", True(env->isolate()));
}
#ifdef NODE_NO_BROWSER_GLOBALS
// configure --no-browser-globals
READONLY_PROPERTY(process, "_noBrowserGlobals", True(env->isolate()));
#endif // NODE_NO_BROWSER_GLOBALS
// --prof-process
if (prof_process) {
READONLY_PROPERTY(process, "profProcess", True(env->isolate()));
}
// --trace-deprecation
if (trace_deprecation) {
READONLY_PROPERTY(process, "traceDeprecation", True(env->isolate()));
}
// --debug-brk
if (debug_options.wait_for_connect()) {
READONLY_PROPERTY(process, "_debugWaitConnect", True(env->isolate()));
}
// --security-revert flags
#define V(code, _, __) \
do { \
if (IsReverted(REVERT_ ## code)) { \
READONLY_PROPERTY(process, "REVERT_" #code, True(env->isolate())); \
} \
} while (0);
REVERSIONS(V)
#undef V
size_t exec_path_len = 2 * PATH_MAX;
char* exec_path = new char[exec_path_len];
Local<String> exec_path_value;
if (uv_exepath(exec_path, &exec_path_len) == 0) {
exec_path_value = String::NewFromUtf8(env->isolate(),
exec_path,
String::kNormalString,
exec_path_len);
} else {
exec_path_value = String::NewFromUtf8(env->isolate(), argv[0]);
}
process->Set(FIXED_ONE_BYTE_STRING(env->isolate(), "execPath"),
exec_path_value);
delete[] exec_path;
auto debug_port_string = FIXED_ONE_BYTE_STRING(env->isolate(), "debugPort");
CHECK(process->SetAccessor(env->context(),
debug_port_string,
DebugPortGetter,
DebugPortSetter,
env->as_external()).FromJust());
// define various internal methods
env->SetMethod(process,
"_startProfilerIdleNotifier",
StartProfilerIdleNotifier);
env->SetMethod(process,
"_stopProfilerIdleNotifier",
StopProfilerIdleNotifier);
env->SetMethod(process, "_getActiveRequests", GetActiveRequests);
env->SetMethod(process, "_getActiveHandles", GetActiveHandles);
env->SetMethod(process, "reallyExit", Exit);
env->SetMethod(process, "abort", Abort);
env->SetMethod(process, "chdir", Chdir);
env->SetMethod(process, "cwd", Cwd);
env->SetMethod(process, "umask", Umask);
#if defined(__POSIX__) && !defined(__ANDROID__)
env->SetMethod(process, "getuid", GetUid);
env->SetMethod(process, "geteuid", GetEUid);
env->SetMethod(process, "setuid", SetUid);
env->SetMethod(process, "seteuid", SetEUid);
env->SetMethod(process, "setgid", SetGid);
env->SetMethod(process, "setegid", SetEGid);
env->SetMethod(process, "getgid", GetGid);
env->SetMethod(process, "getegid", GetEGid);
env->SetMethod(process, "getgroups", GetGroups);
env->SetMethod(process, "setgroups", SetGroups);
env->SetMethod(process, "initgroups", InitGroups);
#endif // __POSIX__ && !defined(__ANDROID__)
env->SetMethod(process, "_kill", Kill);
env->SetMethod(process, "_debugProcess", DebugProcess);
env->SetMethod(process, "_debugPause", DebugPause);
env->SetMethod(process, "_debugEnd", DebugEnd);
env->SetMethod(process, "hrtime", Hrtime);
env->SetMethod(process, "cpuUsage", CPUUsage);
env->SetMethod(process, "dlopen", DLOpen);
env->SetMethod(process, "uptime", Uptime);
env->SetMethod(process, "memoryUsage", MemoryUsage);
env->SetMethod(process, "binding", Binding);
env->SetMethod(process, "_linkedBinding", LinkedBinding);
env->SetMethod(process, "_setupProcessObject", SetupProcessObject);
env->SetMethod(process, "_setupNextTick", SetupNextTick);
env->SetMethod(process, "_setupPromises", SetupPromises);
env->SetMethod(process, "_setupDomainUse", SetupDomainUse);
// pre-set _events object for faster emit checks
Local<Object> events_obj = Object::New(env->isolate());
CHECK(events_obj->SetPrototype(env->context(),
Null(env->isolate())).FromJust());
process->Set(env->events_string(), events_obj);
}
#undef READONLY_PROPERTY
void SignalExit(int signo) {
uv_tty_reset_mode();
if (trace_enabled) {
v8_platform.StopTracingAgent();
}
#ifdef __FreeBSD__
// FreeBSD has a nasty bug, see RegisterSignalHandler for details
struct sigaction sa;
memset(&sa, 0, sizeof(sa));
sa.sa_handler = SIG_DFL;
CHECK_EQ(sigaction(signo, &sa, nullptr), 0);
#endif
raise(signo);
}
// Most of the time, it's best to use `console.error` to write
// to the process.stderr stream. However, in some cases, such as
// when debugging the stream.Writable class or the process.nextTick
// function, it is useful to bypass JavaScript entirely.
static void RawDebug(const FunctionCallbackInfo<Value>& args) {
CHECK(args.Length() == 1 && args[0]->IsString() &&
"must be called with a single string");
node::Utf8Value message(args.GetIsolate(), args[0]);
PrintErrorString("%s\n", *message);
fflush(stderr);
}
void LoadEnvironment(Environment* env) {
HandleScope handle_scope(env->isolate());
TryCatch try_catch(env->isolate());
// Disable verbose mode to stop FatalException() handler from trying
// to handle the exception. Errors this early in the start-up phase
// are not safe to ignore.
try_catch.SetVerbose(false);
// Execute the lib/internal/bootstrap_node.js file which was included as a
// static C string in node_natives.h by node_js2c.
// 'internal_bootstrap_node_native' is the string containing that source code.
Local<String> script_name = FIXED_ONE_BYTE_STRING(env->isolate(),
"bootstrap_node.js");
Local<Value> f_value = ExecuteString(env, MainSource(env), script_name);
if (try_catch.HasCaught()) {
ReportException(env, try_catch);
exit(10);
}
// The bootstrap_node.js file returns a function 'f'
CHECK(f_value->IsFunction());
Local<Function> f = Local<Function>::Cast(f_value);
// Add a reference to the global object
Local<Object> global = env->context()->Global();
#if defined HAVE_DTRACE || defined HAVE_ETW
InitDTrace(env, global);
#endif
#if defined HAVE_LTTNG
InitLTTNG(env, global);
#endif
#if defined HAVE_PERFCTR
InitPerfCounters(env, global);
#endif
// Enable handling of uncaught exceptions
// (FatalException(), break on uncaught exception in debugger)
//
// This is not strictly necessary since it's almost impossible
// to attach the debugger fast enough to break on exception
// thrown during process startup.
try_catch.SetVerbose(true);
env->SetMethod(env->process_object(), "_rawDebug", RawDebug);
// Expose the global object as a property on itself
// (Allows you to set stuff on `global` from anywhere in JavaScript.)
global->Set(FIXED_ONE_BYTE_STRING(env->isolate(), "global"), global);
// Now we call 'f' with the 'process' variable that we've built up with
// all our bindings. Inside bootstrap_node.js and internal/process we'll
// take care of assigning things to their places.
// We start the process this way in order to be more modular. Developers
// who do not like how bootstrap_node.js sets up the module system but do
// like Node's I/O bindings may want to replace 'f' with their own function.
Local<Value> arg = env->process_object();
f->Call(Null(env->isolate()), 1, &arg);
}
static void PrintHelp() {
// XXX: If you add an option here, please also add it to doc/node.1 and
// doc/api/cli.md
printf("Usage: node [options] [ -e script | script.js ] [arguments]\n"
" node debug script.js [arguments]\n"
"\n"
"Options:\n"
" -v, --version print Node.js version\n"
" -e, --eval script evaluate script\n"
" -p, --print evaluate script and print result\n"
" -c, --check syntax check script without executing\n"
" -i, --interactive always enter the REPL even if stdin\n"
" does not appear to be a terminal\n"
" -r, --require module to preload (option can be "
"repeated)\n"
#if HAVE_INSPECTOR
" --inspect[=host:port] activate inspector on host:port\n"
" (default: 127.0.0.1:9229)\n"
" --inspect-brk[=host:port] activate inspector on host:port\n"
" and break at start of user script\n"
#endif
" --no-deprecation silence deprecation warnings\n"
" --trace-deprecation show stack traces on deprecations\n"
" --throw-deprecation throw an exception on deprecations\n"
" --no-warnings silence all process warnings\n"
" --trace-warnings show stack traces on process warnings\n"
" --redirect-warnings=path\n"
" write warnings to path instead of\n"
" stderr\n"
" --trace-sync-io show stack trace when use of sync IO\n"
" is detected after the first tick\n"
" --trace-events-enabled track trace events\n"
" --trace-event-categories comma separated list of trace event\n"
" categories to record\n"
" --track-heap-objects track heap object allocations for heap "
"snapshots\n"
" --prof-process process v8 profiler output generated\n"
" using --prof\n"
" --zero-fill-buffers automatically zero-fill all newly "
"allocated\n"
" Buffer and SlowBuffer instances\n"
" --v8-options print v8 command line options\n"
" --v8-pool-size=num set v8's thread pool size\n"
#if HAVE_OPENSSL
" --tls-cipher-list=val use an alternative default TLS cipher "
"list\n"
" --use-bundled-ca use bundled CA store"
#if !defined(NODE_OPENSSL_CERT_STORE)
" (default)"
#endif
"\n"
" --use-openssl-ca use OpenSSL's default CA store"
#if defined(NODE_OPENSSL_CERT_STORE)
" (default)"
#endif
"\n"
#if NODE_FIPS_MODE
" --enable-fips enable FIPS crypto at startup\n"
" --force-fips force FIPS crypto (cannot be disabled)\n"
#endif /* NODE_FIPS_MODE */
" --openssl-config=file load OpenSSL configuration from the\n"
" specified file (overrides\n"
" OPENSSL_CONF)\n"
#endif /* HAVE_OPENSSL */
#if defined(NODE_HAVE_I18N_SUPPORT)
" --icu-data-dir=dir set ICU data load path to dir\n"
" (overrides NODE_ICU_DATA)\n"
#if !defined(NODE_HAVE_SMALL_ICU)
" note: linked-in ICU data is present\n"
#endif
" --preserve-symlinks preserve symbolic links when resolving\n"
" and caching modules\n"
#endif
"\n"
"Environment variables:\n"
"NODE_DEBUG ','-separated list of core modules\n"
" that should print debug information\n"
"NODE_DISABLE_COLORS set to 1 to disable colors in the REPL\n"
"NODE_EXTRA_CA_CERTS path to additional CA certificates\n"
" file\n"
#if defined(NODE_HAVE_I18N_SUPPORT)
"NODE_ICU_DATA data path for ICU (Intl object) data\n"
#if !defined(NODE_HAVE_SMALL_ICU)
" (will extend linked-in data)\n"
#endif
#endif
"NODE_NO_WARNINGS set to 1 to silence process warnings\n"
#ifdef _WIN32
"NODE_PATH ';'-separated list of directories\n"
#else
"NODE_PATH ':'-separated list of directories\n"
#endif
" prefixed to the module search path\n"
"NODE_REPL_HISTORY path to the persistent REPL history\n"
" file\n"
"NODE_REDIRECT_WARNINGS write warnings to path instead of\n"
" stderr\n"
"OPENSSL_CONF load OpenSSL configuration from file\n"
"\n"
"Documentation can be found at https://nodejs.org/\n");
}
// Parse command line arguments.
//
// argv is modified in place. exec_argv and v8_argv are out arguments that
// ParseArgs() allocates memory for and stores a pointer to the output
// vector in. The caller should free them with delete[].
//
// On exit:
//
// * argv contains the arguments with node and V8 options filtered out.
// * exec_argv contains both node and V8 options and nothing else.
// * v8_argv contains argv[0] plus any V8 options
static void ParseArgs(int* argc,
const char** argv,
int* exec_argc,
const char*** exec_argv,
int* v8_argc,
const char*** v8_argv) {
const unsigned int nargs = static_cast<unsigned int>(*argc);
const char** new_exec_argv = new const char*[nargs];
const char** new_v8_argv = new const char*[nargs];
const char** new_argv = new const char*[nargs];
const char** local_preload_modules = new const char*[nargs];
for (unsigned int i = 0; i < nargs; ++i) {
new_exec_argv[i] = nullptr;
new_v8_argv[i] = nullptr;
new_argv[i] = nullptr;
local_preload_modules[i] = nullptr;
}
// exec_argv starts with the first option, the other two start with argv[0].
unsigned int new_exec_argc = 0;
unsigned int new_v8_argc = 1;
unsigned int new_argc = 1;
new_v8_argv[0] = argv[0];
new_argv[0] = argv[0];
unsigned int index = 1;
bool short_circuit = false;
while (index < nargs && argv[index][0] == '-' && !short_circuit) {
const char* const arg = argv[index];
unsigned int args_consumed = 1;
if (debug_options.ParseOption(arg)) {
// Done, consumed by DebugOptions::ParseOption().
} else if (strcmp(arg, "--version") == 0 || strcmp(arg, "-v") == 0) {
printf("%s\n", NODE_VERSION);
exit(0);
} else if (strcmp(arg, "--help") == 0 || strcmp(arg, "-h") == 0) {
PrintHelp();
exit(0);
} else if (strcmp(arg, "--eval") == 0 ||
strcmp(arg, "-e") == 0 ||
strcmp(arg, "--print") == 0 ||
strcmp(arg, "-pe") == 0 ||
strcmp(arg, "-p") == 0) {
bool is_eval = strchr(arg, 'e') != nullptr;
bool is_print = strchr(arg, 'p') != nullptr;
print_eval = print_eval || is_print;
// --eval, -e and -pe always require an argument.
if (is_eval == true) {
args_consumed += 1;
eval_string = argv[index + 1];
if (eval_string == nullptr) {
fprintf(stderr, "%s: %s requires an argument\n", argv[0], arg);
exit(9);
}
} else if ((index + 1 < nargs) &&
argv[index + 1] != nullptr &&
argv[index + 1][0] != '-') {
args_consumed += 1;
eval_string = argv[index + 1];
if (strncmp(eval_string, "\\-", 2) == 0) {
// Starts with "\\-": escaped expression, drop the backslash.
eval_string += 1;
}
}
} else if (strcmp(arg, "--require") == 0 ||
strcmp(arg, "-r") == 0) {
const char* module = argv[index + 1];
if (module == nullptr) {
fprintf(stderr, "%s: %s requires an argument\n", argv[0], arg);
exit(9);
}
args_consumed += 1;
local_preload_modules[preload_module_count++] = module;
} else if (strcmp(arg, "--check") == 0 || strcmp(arg, "-c") == 0) {
syntax_check_only = true;
} else if (strcmp(arg, "--interactive") == 0 || strcmp(arg, "-i") == 0) {
force_repl = true;
} else if (strcmp(arg, "--no-deprecation") == 0) {
no_deprecation = true;
} else if (strcmp(arg, "--no-warnings") == 0) {
no_process_warnings = true;
} else if (strcmp(arg, "--trace-warnings") == 0) {
trace_warnings = true;
} else if (strncmp(arg, "--redirect-warnings=", 20) == 0) {
config_warning_file = arg + 20;
} else if (strcmp(arg, "--trace-deprecation") == 0) {
trace_deprecation = true;
} else if (strcmp(arg, "--trace-sync-io") == 0) {
trace_sync_io = true;
} else if (strcmp(arg, "--trace-events-enabled") == 0) {
trace_enabled = true;
} else if (strcmp(arg, "--trace-event-categories") == 0) {
const char* categories = argv[index + 1];
if (categories == nullptr) {
fprintf(stderr, "%s: %s requires an argument\n", argv[0], arg);
exit(9);
}
args_consumed += 1;
trace_enabled_categories = categories;
} else if (strcmp(arg, "--track-heap-objects") == 0) {
track_heap_objects = true;
} else if (strcmp(arg, "--throw-deprecation") == 0) {
throw_deprecation = true;
} else if (strncmp(arg, "--security-revert=", 18) == 0) {
const char* cve = arg + 18;
Revert(cve);
} else if (strcmp(arg, "--preserve-symlinks") == 0) {
config_preserve_symlinks = true;
} else if (strcmp(arg, "--prof-process") == 0) {
prof_process = true;
short_circuit = true;
} else if (strcmp(arg, "--zero-fill-buffers") == 0) {
zero_fill_all_buffers = true;
} else if (strcmp(arg, "--v8-options") == 0) {
new_v8_argv[new_v8_argc] = "--help";
new_v8_argc += 1;
} else if (strncmp(arg, "--v8-pool-size=", 15) == 0) {
v8_thread_pool_size = atoi(arg + 15);
#if HAVE_OPENSSL
} else if (strncmp(arg, "--tls-cipher-list=", 18) == 0) {
default_cipher_list = arg + 18;
} else if (strncmp(arg, "--use-openssl-ca", 16) == 0) {
ssl_openssl_cert_store = true;
} else if (strncmp(arg, "--use-bundled-ca", 16) == 0) {
ssl_openssl_cert_store = false;
#if NODE_FIPS_MODE
} else if (strcmp(arg, "--enable-fips") == 0) {
enable_fips_crypto = true;
} else if (strcmp(arg, "--force-fips") == 0) {
force_fips_crypto = true;
#endif /* NODE_FIPS_MODE */
} else if (strncmp(arg, "--openssl-config=", 17) == 0) {
openssl_config.assign(arg + 17);
#endif /* HAVE_OPENSSL */
#if defined(NODE_HAVE_I18N_SUPPORT)
} else if (strncmp(arg, "--icu-data-dir=", 15) == 0) {
icu_data_dir.assign(arg + 15);
#endif
} else if (strcmp(arg, "--expose-internals") == 0 ||
strcmp(arg, "--expose_internals") == 0) {
// consumed in js
} else if (strcmp(arg, "--") == 0) {
index += 1;
break;
} else {
// V8 option. Pass through as-is.
new_v8_argv[new_v8_argc] = arg;
new_v8_argc += 1;
}
memcpy(new_exec_argv + new_exec_argc,
argv + index,
args_consumed * sizeof(*argv));
new_exec_argc += args_consumed;
index += args_consumed;
}
// Copy remaining arguments.
const unsigned int args_left = nargs - index;
memcpy(new_argv + new_argc, argv + index, args_left * sizeof(*argv));
new_argc += args_left;
*exec_argc = new_exec_argc;
*exec_argv = new_exec_argv;
*v8_argc = new_v8_argc;
*v8_argv = new_v8_argv;
// Copy new_argv over argv and update argc.
memcpy(argv, new_argv, new_argc * sizeof(*argv));
delete[] new_argv;
*argc = static_cast<int>(new_argc);
// Copy the preload_modules from the local array to an appropriately sized
// global array.
if (preload_module_count > 0) {
CHECK(!preload_modules);
preload_modules = new const char*[preload_module_count];
memcpy(preload_modules, local_preload_modules,
preload_module_count * sizeof(*preload_modules));
}
delete[] local_preload_modules;
}
// Called from V8 Debug Agent TCP thread.
static void DispatchMessagesDebugAgentCallback(Environment* env) {
// TODO(indutny): move async handle to environment
uv_async_send(&dispatch_debug_messages_async);
}
static void StartDebug(Environment* env, const char* path,
DebugOptions debug_options) {
CHECK(!debugger_running);
#if HAVE_INSPECTOR
if (debug_options.inspector_enabled())
debugger_running = v8_platform.StartInspector(env, path, debug_options);
#endif // HAVE_INSPECTOR
if (debug_options.debugger_enabled()) {
env->debugger_agent()->set_dispatch_handler(
DispatchMessagesDebugAgentCallback);
debugger_running = env->debugger_agent()->Start(debug_options);
if (debugger_running == false) {
fprintf(stderr, "Starting debugger on %s:%d failed\n",
debug_options.host_name().c_str(), debug_options.port());
fflush(stderr);
}
}
}
// Called from the main thread.
static void EnableDebug(Environment* env) {
CHECK(debugger_running);
if (!debug_options.debugger_enabled()) {
return;
}
// Send message to enable debug in workers
HandleScope handle_scope(env->isolate());
Local<Object> message = Object::New(env->isolate());
message->Set(FIXED_ONE_BYTE_STRING(env->isolate(), "cmd"),
FIXED_ONE_BYTE_STRING(env->isolate(), "NODE_DEBUG_ENABLED"));
Local<Value> argv[] = {
FIXED_ONE_BYTE_STRING(env->isolate(), "internalMessage"),
message
};
MakeCallback(env, env->process_object(), "emit", arraysize(argv), argv);
// Enabled debugger, possibly making it wait on a semaphore
env->debugger_agent()->Enable();
}
// Called from an arbitrary thread.
static void TryStartDebugger() {
Mutex::ScopedLock scoped_lock(node_isolate_mutex);
if (auto isolate = node_isolate) {
v8::Debug::DebugBreak(isolate);
uv_async_send(&dispatch_debug_messages_async);
}
}
// Called from the main thread.
static void DispatchDebugMessagesAsyncCallback(uv_async_t* handle) {
Mutex::ScopedLock scoped_lock(node_isolate_mutex);
if (auto isolate = node_isolate) {
if (debugger_running == false) {
fprintf(stderr, "Starting debugger agent.\n");
HandleScope scope(isolate);
Environment* env = Environment::GetCurrent(isolate);
Context::Scope context_scope(env->context());
debug_options.EnableDebugAgent(DebugAgentType::kDebugger);
StartDebug(env, nullptr, debug_options);
EnableDebug(env);
}
Isolate::Scope isolate_scope(isolate);
v8::Debug::ProcessDebugMessages(isolate);
}
}
#ifdef __POSIX__
static void EnableDebugSignalHandler(int signo) {
uv_sem_post(&debug_semaphore);
}
void RegisterSignalHandler(int signal,
void (*handler)(int signal),
bool reset_handler) {
struct sigaction sa;
memset(&sa, 0, sizeof(sa));
sa.sa_handler = handler;
#ifndef __FreeBSD__
// FreeBSD has a nasty bug with SA_RESETHAND reseting the SA_SIGINFO, that is
// in turn set for a libthr wrapper. This leads to a crash.
// Work around the issue by manually setting SIG_DFL in the signal handler
sa.sa_flags = reset_handler ? SA_RESETHAND : 0;
#endif
sigfillset(&sa.sa_mask);
CHECK_EQ(sigaction(signal, &sa, nullptr), 0);
}
void DebugProcess(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);
if (args.Length() != 1) {
return env->ThrowError("Invalid number of arguments.");
}
pid_t pid;
int r;
pid = args[0]->IntegerValue();
r = kill(pid, SIGUSR1);
if (r != 0) {
return env->ThrowErrnoException(errno, "kill");
}
}
inline void* DebugSignalThreadMain(void* unused) {
for (;;) {
uv_sem_wait(&debug_semaphore);
TryStartDebugger();
}
return nullptr;
}
static int RegisterDebugSignalHandler() {
// Start a watchdog thread for calling v8::Debug::DebugBreak() because
// it's not safe to call directly from the signal handler, it can
// deadlock with the thread it interrupts.
CHECK_EQ(0, uv_sem_init(&debug_semaphore, 0));
pthread_attr_t attr;
CHECK_EQ(0, pthread_attr_init(&attr));
// Don't shrink the thread's stack on FreeBSD. Said platform decided to
// follow the pthreads specification to the letter rather than in spirit:
// https://lists.freebsd.org/pipermail/freebsd-current/2014-March/048885.html
#ifndef __FreeBSD__
CHECK_EQ(0, pthread_attr_setstacksize(&attr, PTHREAD_STACK_MIN));
#endif // __FreeBSD__
CHECK_EQ(0, pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED));
sigset_t sigmask;
sigfillset(&sigmask);
CHECK_EQ(0, pthread_sigmask(SIG_SETMASK, &sigmask, &sigmask));
pthread_t thread;
const int err =
pthread_create(&thread, &attr, DebugSignalThreadMain, nullptr);
CHECK_EQ(0, pthread_sigmask(SIG_SETMASK, &sigmask, nullptr));
CHECK_EQ(0, pthread_attr_destroy(&attr));
if (err != 0) {
fprintf(stderr, "node[%d]: pthread_create: %s\n", getpid(), strerror(err));
fflush(stderr);
// Leave SIGUSR1 blocked. We don't install a signal handler,
// receiving the signal would terminate the process.
return -err;
}
RegisterSignalHandler(SIGUSR1, EnableDebugSignalHandler);
// Unblock SIGUSR1. A pending SIGUSR1 signal will now be delivered.
sigemptyset(&sigmask);
sigaddset(&sigmask, SIGUSR1);
CHECK_EQ(0, pthread_sigmask(SIG_UNBLOCK, &sigmask, nullptr));
return 0;
}
#endif // __POSIX__
#ifdef _WIN32
DWORD WINAPI EnableDebugThreadProc(void* arg) {
TryStartDebugger();
return 0;
}
static int GetDebugSignalHandlerMappingName(DWORD pid, wchar_t* buf,
size_t buf_len) {
return _snwprintf(buf, buf_len, L"node-debug-handler-%u", pid);
}
static int RegisterDebugSignalHandler() {
wchar_t mapping_name[32];
HANDLE mapping_handle;
DWORD pid;
LPTHREAD_START_ROUTINE* handler;
pid = GetCurrentProcessId();
if (GetDebugSignalHandlerMappingName(pid,
mapping_name,
arraysize(mapping_name)) < 0) {
return -1;
}
mapping_handle = CreateFileMappingW(INVALID_HANDLE_VALUE,
nullptr,
PAGE_READWRITE,
0,
sizeof *handler,
mapping_name);
if (mapping_handle == nullptr) {
return -1;
}
handler = reinterpret_cast<LPTHREAD_START_ROUTINE*>(
MapViewOfFile(mapping_handle,
FILE_MAP_ALL_ACCESS,
0,
0,
sizeof *handler));
if (handler == nullptr) {
CloseHandle(mapping_handle);
return -1;
}
*handler = EnableDebugThreadProc;
UnmapViewOfFile(static_cast<void*>(handler));
return 0;
}
static void DebugProcess(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);
Isolate* isolate = args.GetIsolate();
DWORD pid;
HANDLE process = nullptr;
HANDLE thread = nullptr;
HANDLE mapping = nullptr;
wchar_t mapping_name[32];
LPTHREAD_START_ROUTINE* handler = nullptr;
if (args.Length() != 1) {
env->ThrowError("Invalid number of arguments.");
goto out;
}
pid = (DWORD) args[0]->IntegerValue();
process = OpenProcess(PROCESS_CREATE_THREAD | PROCESS_QUERY_INFORMATION |
PROCESS_VM_OPERATION | PROCESS_VM_WRITE |
PROCESS_VM_READ,
FALSE,
pid);
if (process == nullptr) {
isolate->ThrowException(
WinapiErrnoException(isolate, GetLastError(), "OpenProcess"));
goto out;
}
if (GetDebugSignalHandlerMappingName(pid,
mapping_name,
arraysize(mapping_name)) < 0) {
env->ThrowErrnoException(errno, "sprintf");
goto out;
}
mapping = OpenFileMappingW(FILE_MAP_READ, FALSE, mapping_name);
if (mapping == nullptr) {
isolate->ThrowException(WinapiErrnoException(isolate,
GetLastError(),
"OpenFileMappingW"));
goto out;
}
handler = reinterpret_cast<LPTHREAD_START_ROUTINE*>(
MapViewOfFile(mapping,
FILE_MAP_READ,
0,
0,
sizeof *handler));
if (handler == nullptr || *handler == nullptr) {
isolate->ThrowException(
WinapiErrnoException(isolate, GetLastError(), "MapViewOfFile"));
goto out;
}
thread = CreateRemoteThread(process,
nullptr,
0,
*handler,
nullptr,
0,
nullptr);
if (thread == nullptr) {
isolate->ThrowException(WinapiErrnoException(isolate,
GetLastError(),
"CreateRemoteThread"));
goto out;
}
// Wait for the thread to terminate
if (WaitForSingleObject(thread, INFINITE) != WAIT_OBJECT_0) {
isolate->ThrowException(WinapiErrnoException(isolate,
GetLastError(),
"WaitForSingleObject"));
goto out;
}
out:
if (process != nullptr)
CloseHandle(process);
if (thread != nullptr)
CloseHandle(thread);
if (handler != nullptr)
UnmapViewOfFile(handler);
if (mapping != nullptr)
CloseHandle(mapping);
}
#endif // _WIN32
static void DebugPause(const FunctionCallbackInfo<Value>& args) {
v8::Debug::DebugBreak(args.GetIsolate());
}
static void DebugEnd(const FunctionCallbackInfo<Value>& args) {
if (debugger_running) {
Environment* env = Environment::GetCurrent(args);
#if HAVE_INSPECTOR
if (debug_options.inspector_enabled()) {
env->inspector_agent()->Stop();
} else {
#endif
env->debugger_agent()->Stop();
#if HAVE_INSPECTOR
}
#endif
debugger_running = false;
}
}
inline void PlatformInit() {
#ifdef __POSIX__
sigset_t sigmask;
sigemptyset(&sigmask);
sigaddset(&sigmask, SIGUSR1);
const int err = pthread_sigmask(SIG_SETMASK, &sigmask, nullptr);
// Make sure file descriptors 0-2 are valid before we start logging anything.
for (int fd = STDIN_FILENO; fd <= STDERR_FILENO; fd += 1) {
struct stat ignored;
if (fstat(fd, &ignored) == 0)
continue;
// Anything but EBADF means something is seriously wrong. We don't
// have to special-case EINTR, fstat() is not interruptible.
if (errno != EBADF)
ABORT();
if (fd != open("/dev/null", O_RDWR))
ABORT();
}
CHECK_EQ(err, 0);
#ifndef NODE_SHARED_MODE
// Restore signal dispositions, the parent process may have changed them.
struct sigaction act;
memset(&act, 0, sizeof(act));
// The hard-coded upper limit is because NSIG is not very reliable; on Linux,
// it evaluates to 32, 34 or 64, depending on whether RT signals are enabled.
// Counting up to SIGRTMIN doesn't work for the same reason.
for (unsigned nr = 1; nr < kMaxSignal; nr += 1) {
if (nr == SIGKILL || nr == SIGSTOP)
continue;
act.sa_handler = (nr == SIGPIPE) ? SIG_IGN : SIG_DFL;
CHECK_EQ(0, sigaction(nr, &act, nullptr));
}
#endif // !NODE_SHARED_MODE
RegisterSignalHandler(SIGINT, SignalExit, true);
RegisterSignalHandler(SIGTERM, SignalExit, true);
// Raise the open file descriptor limit.
struct rlimit lim;
if (getrlimit(RLIMIT_NOFILE, &lim) == 0 && lim.rlim_cur != lim.rlim_max) {
// Do a binary search for the limit.
rlim_t min = lim.rlim_cur;
rlim_t max = 1 << 20;
// But if there's a defined upper bound, don't search, just set it.
if (lim.rlim_max != RLIM_INFINITY) {
min = lim.rlim_max;
max = lim.rlim_max;
}
do {
lim.rlim_cur = min + (max - min) / 2;
if (setrlimit(RLIMIT_NOFILE, &lim)) {
max = lim.rlim_cur;
} else {
min = lim.rlim_cur;
}
} while (min + 1 < max);
}
#endif // __POSIX__
#ifdef _WIN32
for (int fd = 0; fd <= 2; ++fd) {
auto handle = reinterpret_cast<HANDLE>(_get_osfhandle(fd));
if (handle == INVALID_HANDLE_VALUE ||
GetFileType(handle) == FILE_TYPE_UNKNOWN) {
// Ignore _close result. If it fails or not depends on used Windows
// version. We will just check _open result.
_close(fd);
if (fd != _open("nul", _O_RDWR))
ABORT();
}
}
#endif // _WIN32
}
void Init(int* argc,
const char** argv,
int* exec_argc,
const char*** exec_argv) {
// Initialize prog_start_time to get relative uptime.
prog_start_time = static_cast<double>(uv_now(uv_default_loop()));
// Make inherited handles noninheritable.
uv_disable_stdio_inheritance();
// init async debug messages dispatching
// Main thread uses uv_default_loop
CHECK_EQ(0, uv_async_init(uv_default_loop(),
&dispatch_debug_messages_async,
DispatchDebugMessagesAsyncCallback));
uv_unref(reinterpret_cast<uv_handle_t*>(&dispatch_debug_messages_async));
#if defined(NODE_HAVE_I18N_SUPPORT)
// Set the ICU casing flag early
// so the user can disable a flag --foo at run-time by passing
// --no_foo from the command line.
const char icu_case_mapping[] = "--icu_case_mapping";
V8::SetFlagsFromString(icu_case_mapping, sizeof(icu_case_mapping) - 1);
#endif
#if defined(NODE_V8_OPTIONS)
// Should come before the call to V8::SetFlagsFromCommandLine()
// so the user can disable a flag --foo at run-time by passing
// --no_foo from the command line.
V8::SetFlagsFromString(NODE_V8_OPTIONS, sizeof(NODE_V8_OPTIONS) - 1);
#endif
// Allow for environment set preserving symlinks.
{
std::string text;
config_preserve_symlinks =
SafeGetenv("NODE_PRESERVE_SYMLINKS", &text) && text[0] == '1';
}
if (config_warning_file.empty())
SafeGetenv("NODE_REDIRECT_WARNINGS", &config_warning_file);
#if HAVE_OPENSSL
if (openssl_config.empty())
SafeGetenv("OPENSSL_CONF", &openssl_config);
#endif
// Parse a few arguments which are specific to Node.
int v8_argc;
const char** v8_argv;
ParseArgs(argc, argv, exec_argc, exec_argv, &v8_argc, &v8_argv);
// TODO(bnoordhuis) Intercept --prof arguments and start the CPU profiler
// manually? That would give us a little more control over its runtime
// behavior but it could also interfere with the user's intentions in ways
// we fail to anticipate. Dillema.
for (int i = 1; i < v8_argc; ++i) {
if (strncmp(v8_argv[i], "--prof", sizeof("--prof") - 1) == 0) {
v8_is_profiling = true;
break;
}
}
#ifdef __POSIX__
// Block SIGPROF signals when sleeping in epoll_wait/kevent/etc. Avoids the
// performance penalty of frequent EINTR wakeups when the profiler is running.
// Only do this for v8.log profiling, as it breaks v8::CpuProfiler users.
if (v8_is_profiling) {
uv_loop_configure(uv_default_loop(), UV_LOOP_BLOCK_SIGNAL, SIGPROF);
}
#endif
#if defined(NODE_HAVE_I18N_SUPPORT)
// If the parameter isn't given, use the env variable.
if (icu_data_dir.empty())
SafeGetenv("NODE_ICU_DATA", &icu_data_dir);
// Initialize ICU.
// If icu_data_dir is empty here, it will load the 'minimal' data.
if (!i18n::InitializeICUDirectory(icu_data_dir)) {
FatalError(nullptr, "Could not initialize ICU "
"(check NODE_ICU_DATA or --icu-data-dir parameters)");
}
#endif
// The const_cast doesn't violate conceptual const-ness. V8 doesn't modify
// the argv array or the elements it points to.
if (v8_argc > 1)
V8::SetFlagsFromCommandLine(&v8_argc, const_cast<char**>(v8_argv), true);
// Anything that's still in v8_argv is not a V8 or a node option.
for (int i = 1; i < v8_argc; i++) {
fprintf(stderr, "%s: bad option: %s\n", argv[0], v8_argv[i]);
}
delete[] v8_argv;
v8_argv = nullptr;
if (v8_argc > 1) {
exit(9);
}
// Unconditionally force typed arrays to allocate outside the v8 heap. This
// is to prevent memory pointers from being moved around that are returned by
// Buffer::Data().
const char no_typed_array_heap[] = "--typed_array_max_size_in_heap=0";
V8::SetFlagsFromString(no_typed_array_heap, sizeof(no_typed_array_heap) - 1);
if (!debug_options.debugger_enabled() && !debug_options.inspector_enabled()) {
RegisterDebugSignalHandler();
}
// We should set node_is_initialized here instead of in node::Start,
// otherwise embedders using node::Init to initialize everything will not be
// able to set it and native modules will not load for them.
node_is_initialized = true;
}
struct AtExitCallback {
AtExitCallback* next_;
void (*cb_)(void* arg);
void* arg_;
};
static AtExitCallback* at_exit_functions_;
// TODO(bnoordhuis) Turn into per-context event.
void RunAtExit(Environment* env) {
AtExitCallback* p = at_exit_functions_;
at_exit_functions_ = nullptr;
while (p) {
AtExitCallback* q = p->next_;
p->cb_(p->arg_);
delete p;
p = q;
}
}
void AtExit(void (*cb)(void* arg), void* arg) {
AtExitCallback* p = new AtExitCallback;
p->cb_ = cb;
p->arg_ = arg;
p->next_ = at_exit_functions_;
at_exit_functions_ = p;
}
void EmitBeforeExit(Environment* env) {
HandleScope handle_scope(env->isolate());
Context::Scope context_scope(env->context());
Local<Object> process_object = env->process_object();
Local<String> exit_code = FIXED_ONE_BYTE_STRING(env->isolate(), "exitCode");
Local<Value> args[] = {
FIXED_ONE_BYTE_STRING(env->isolate(), "beforeExit"),
process_object->Get(exit_code)->ToInteger(env->isolate())
};
MakeCallback(env, process_object, "emit", arraysize(args), args);
}
int EmitExit(Environment* env) {
// process.emit('exit')
HandleScope handle_scope(env->isolate());
Context::Scope context_scope(env->context());
Local<Object> process_object = env->process_object();
process_object->Set(env->exiting_string(), True(env->isolate()));
Local<String> exitCode = env->exit_code_string();
int code = process_object->Get(exitCode)->Int32Value();
Local<Value> args[] = {
env->exit_string(),
Integer::New(env->isolate(), code)
};
MakeCallback(env, process_object, "emit", arraysize(args), args);
// Reload exit code, it may be changed by `emit('exit')`
return process_object->Get(exitCode)->Int32Value();
}
IsolateData* CreateIsolateData(Isolate* isolate, uv_loop_t* loop) {
return new IsolateData(isolate, loop);
}
void FreeIsolateData(IsolateData* isolate_data) {
delete isolate_data;
}
Environment* CreateEnvironment(IsolateData* isolate_data,
Local<Context> context,
int argc,
const char* const* argv,
int exec_argc,
const char* const* exec_argv) {
Isolate* isolate = context->GetIsolate();
HandleScope handle_scope(isolate);
Context::Scope context_scope(context);
auto env = new Environment(isolate_data, context);
env->Start(argc, argv, exec_argc, exec_argv, v8_is_profiling);
return env;
}
void FreeEnvironment(Environment* env) {
delete env;
}
inline int Start(Isolate* isolate, IsolateData* isolate_data,
int argc, const char* const* argv,
int exec_argc, const char* const* exec_argv) {
HandleScope handle_scope(isolate);
Local<Context> context = Context::New(isolate);
Context::Scope context_scope(context);
Environment env(isolate_data, context);
env.Start(argc, argv, exec_argc, exec_argv, v8_is_profiling);
bool debug_enabled =
debug_options.debugger_enabled() || debug_options.inspector_enabled();
// Start debug agent when argv has --debug
if (debug_enabled) {
const char* path = argc > 1 ? argv[1] : nullptr;
StartDebug(&env, path, debug_options);
if (!debugger_running)
return 12; // Signal internal error.
}
{
Environment::AsyncCallbackScope callback_scope(&env);
LoadEnvironment(&env);
}
env.set_trace_sync_io(trace_sync_io);
// Enable debugger
if (debug_enabled)
EnableDebug(&env);
{
SealHandleScope seal(isolate);
bool more;
do {
v8_platform.PumpMessageLoop(isolate);
more = uv_run(env.event_loop(), UV_RUN_ONCE);
if (more == false) {
v8_platform.PumpMessageLoop(isolate);
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());
if (uv_run(env.event_loop(), UV_RUN_NOWAIT) != 0)
more = true;
}
} while (more == true);
}
env.set_trace_sync_io(false);
const int exit_code = EmitExit(&env);
RunAtExit(&env);
WaitForInspectorDisconnect(&env);
#if defined(LEAK_SANITIZER)
__lsan_do_leak_check();
#endif
return exit_code;
}
inline int Start(uv_loop_t* event_loop,
int argc, const char* const* argv,
int exec_argc, const char* const* exec_argv) {
Isolate::CreateParams params;
ArrayBufferAllocator allocator;
params.array_buffer_allocator = &allocator;
#ifdef NODE_ENABLE_VTUNE_PROFILING
params.code_event_handler = vTune::GetVtuneCodeEventHandler();
#endif
Isolate* const isolate = Isolate::New(params);
if (isolate == nullptr)
return 12; // Signal internal error.
isolate->AddMessageListener(OnMessage);
isolate->SetAbortOnUncaughtExceptionCallback(ShouldAbortOnUncaughtException);
isolate->SetAutorunMicrotasks(false);
isolate->SetFatalErrorHandler(OnFatalError);
if (track_heap_objects) {
isolate->GetHeapProfiler()->StartTrackingHeapObjects(true);
}
{
Mutex::ScopedLock scoped_lock(node_isolate_mutex);
CHECK_EQ(node_isolate, nullptr);
node_isolate = isolate;
}
int exit_code;
{
Locker locker(isolate);
Isolate::Scope isolate_scope(isolate);
HandleScope handle_scope(isolate);
IsolateData isolate_data(isolate, event_loop, allocator.zero_fill_field());
exit_code = Start(isolate, &isolate_data, argc, argv, exec_argc, exec_argv);
}
{
Mutex::ScopedLock scoped_lock(node_isolate_mutex);
CHECK_EQ(node_isolate, isolate);
node_isolate = nullptr;
}
isolate->Dispose();
return exit_code;
}
int Start(int argc, char** argv) {
atexit([] () { uv_tty_reset_mode(); });
PlatformInit();
CHECK_GT(argc, 0);
// Hack around with the argv pointer. Used for process.title = "blah".
argv = uv_setup_args(argc, argv);
// This needs to run *before* V8::Initialize(). The const_cast is not
// optional, in case you're wondering.
int exec_argc;
const char** exec_argv;
Init(&argc, const_cast<const char**>(argv), &exec_argc, &exec_argv);
#if HAVE_OPENSSL
{
std::string extra_ca_certs;
if (SafeGetenv("NODE_EXTRA_CA_CERTS", &extra_ca_certs))
crypto::UseExtraCaCerts(extra_ca_certs);
}
#ifdef NODE_FIPS_MODE
// In the case of FIPS builds we should make sure
// the random source is properly initialized first.
OPENSSL_init();
#endif // NODE_FIPS_MODE
// V8 on Windows doesn't have a good source of entropy. Seed it from
// OpenSSL's pool.
V8::SetEntropySource(crypto::EntropySource);
#endif // HAVE_OPENSSL
v8_platform.Initialize(v8_thread_pool_size);
// Enable tracing when argv has --trace-events-enabled.
if (trace_enabled) {
fprintf(stderr, "Warning: Trace event is an experimental feature "
"and could change at any time.\n");
v8_platform.StartTracingAgent();
}
V8::Initialize();
v8_initialized = true;
const int exit_code =
Start(uv_default_loop(), argc, argv, exec_argc, exec_argv);
if (trace_enabled) {
v8_platform.StopTracingAgent();
}
v8_initialized = false;
V8::Dispose();
v8_platform.Dispose();
delete[] exec_argv;
exec_argv = nullptr;
return exit_code;
}
} // namespace node