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// 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"
#if defined HAVE_PERFCTR
#include "node_counters.h"
#endif
#if HAVE_OPENSSL
#include "node_crypto.h"
#endif
#if defined HAVE_DTRACE || defined HAVE_ETW
#include "node_dtrace.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 "string_bytes.h"
#include "uv.h"
#include "v8-debug.h"
#include "v8-profiler.h"
#include "zlib.h"
#include <assert.h>
#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>
#if defined(_MSC_VER)
#include <direct.h>
#include <io.h>
#include <process.h>
#define strcasecmp _stricmp
#define getpid _getpid
#define umask _umask
typedef int mode_t;
#else
#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::Exception;
using v8::Function;
using v8::FunctionCallbackInfo;
using v8::FunctionTemplate;
using v8::Handle;
using v8::HandleScope;
using v8::HeapStatistics;
using v8::Integer;
using v8::Isolate;
using v8::Local;
using v8::Locker;
using v8::Message;
using v8::Number;
using v8::Object;
using v8::ObjectTemplate;
using v8::PropertyCallbackInfo;
using v8::String;
using v8::ThrowException;
using v8::TryCatch;
using v8::Uint32;
using v8::V8;
using v8::Value;
using v8::kExternalUnsignedIntArray;
// FIXME(bnoordhuis) Make these per-context?
QUEUE handle_wrap_queue = { &handle_wrap_queue, &handle_wrap_queue };
QUEUE req_wrap_queue = { &req_wrap_queue, &req_wrap_queue };
static bool print_eval = false;
static bool force_repl = false;
static bool trace_deprecation = false;
static bool throw_deprecation = false;
static const char* eval_string = NULL;
static bool use_debug_agent = false;
static bool debug_wait_connect = false;
static int debug_port = 5858;
static bool v8_is_profiling = false;
// used by C++ modules as well
bool no_deprecation = 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;
// Declared in node_internals.h
Isolate* node_isolate = NULL;
class ArrayBufferAllocator : public ArrayBuffer::Allocator {
public:
// Impose an upper limit to avoid out of memory errors that bring down
// the process.
static const size_t kMaxLength = 0x3fffffff;
static ArrayBufferAllocator the_singleton;
virtual ~ArrayBufferAllocator() {}
virtual void* Allocate(size_t length);
virtual void* AllocateUninitialized(size_t length);
virtual void Free(void* data, size_t length);
private:
ArrayBufferAllocator() {}
ArrayBufferAllocator(const ArrayBufferAllocator&);
void operator=(const ArrayBufferAllocator&);
};
ArrayBufferAllocator ArrayBufferAllocator::the_singleton;
void* ArrayBufferAllocator::Allocate(size_t length) {
if (length > kMaxLength)
return NULL;
return new char[length];
}
void* ArrayBufferAllocator::AllocateUninitialized(size_t length) {
if (length > kMaxLength)
return NULL;
return new char[length];
}
void ArrayBufferAllocator::Free(void* data, size_t length) {
delete[] static_cast<char*>(data);
}
static void CheckImmediate(uv_check_t* handle, int status) {
Environment* env = Environment::from_immediate_check_handle(handle);
Context::Scope context_scope(env->context());
MakeCallback(env, env->process_object(), env->immediate_callback_string());
}
static void IdleImmediateDummy(uv_idle_t*, int) {
// Do nothing. Only for maintaining event loop.
// TODO(bnoordhuis) Maybe make libuv accept NULL 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
ERRNO_CASE(ENOTEMPTY);
#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
SIGNO_CASE(SIGLOST);
#endif
#ifdef SIGPWR
# if SIGPWR != SIGLOST
SIGNO_CASE(SIGPWR);
# endif
#endif
#ifdef SIGSYS
SIGNO_CASE(SIGSYS);
#endif
default: return "";
}
}
Local<Value> ErrnoException(int errorno,
const char *syscall,
const char *msg,
const char *path) {
Environment* env = Environment::GetCurrent(node_isolate);
Local<Value> e;
Local<String> estring = OneByteString(node_isolate, errno_string(errorno));
if (msg == NULL || msg[0] == '\0') {
msg = strerror(errorno);
}
Local<String> message = OneByteString(node_isolate, msg);
Local<String> cons1 =
String::Concat(estring, FIXED_ONE_BYTE_STRING(node_isolate, ", "));
Local<String> cons2 = String::Concat(cons1, message);
if (path) {
Local<String> cons3 =
String::Concat(cons2, FIXED_ONE_BYTE_STRING(node_isolate, " '"));
Local<String> cons4 =
String::Concat(cons3, String::NewFromUtf8(node_isolate, path));
Local<String> cons5 =
String::Concat(cons4, FIXED_ONE_BYTE_STRING(node_isolate, "'"));
e = Exception::Error(cons5);
} else {
e = Exception::Error(cons2);
}
Local<Object> obj = e->ToObject();
obj->Set(env->errno_string(), Integer::New(errorno, node_isolate));
obj->Set(env->code_string(), estring);
if (path != NULL) {
obj->Set(env->path_string(), String::NewFromUtf8(node_isolate, path));
}
if (syscall != NULL) {
obj->Set(env->syscall_string(), OneByteString(node_isolate, syscall));
}
return e;
}
// hack alert! copy of ErrnoException, tuned for uv errors
Local<Value> UVException(int errorno,
const char *syscall,
const char *msg,
const char *path) {
Environment* env = Environment::GetCurrent(node_isolate);
if (!msg || !msg[0])
msg = uv_strerror(errorno);
Local<String> estring = OneByteString(node_isolate, uv_err_name(errorno));
Local<String> message = OneByteString(node_isolate, msg);
Local<String> cons1 =
String::Concat(estring, FIXED_ONE_BYTE_STRING(node_isolate, ", "));
Local<String> cons2 = String::Concat(cons1, message);
Local<Value> e;
Local<String> path_str;
if (path) {
#ifdef _WIN32
if (strncmp(path, "\\\\?\\UNC\\", 8) == 0) {
path_str = String::Concat(FIXED_ONE_BYTE_STRING(node_isolate, "\\\\"),
String::NewFromUtf8(node_isolate, path + 8));
} else if (strncmp(path, "\\\\?\\", 4) == 0) {
path_str = String::NewFromUtf8(node_isolate, path + 4);
} else {
path_str = String::NewFromUtf8(node_isolate, path);
}
#else
path_str = String::NewFromUtf8(node_isolate, path);
#endif
Local<String> cons3 =
String::Concat(cons2, FIXED_ONE_BYTE_STRING(node_isolate, " '"));
Local<String> cons4 =
String::Concat(cons3, path_str);
Local<String> cons5 =
String::Concat(cons4, FIXED_ONE_BYTE_STRING(node_isolate, "'"));
e = Exception::Error(cons5);
} else {
e = Exception::Error(cons2);
}
Local<Object> obj = e->ToObject();
// TODO(piscisaureus) errno should probably go
obj->Set(env->errno_string(), Integer::New(errorno, node_isolate));
obj->Set(env->code_string(), estring);
if (path != NULL) {
obj->Set(env->path_string(), path_str);
}
if (syscall != NULL) {
obj->Set(env->syscall_string(), OneByteString(node_isolate, syscall));
}
return e;
}
#ifdef _WIN32
// Does about the same as strerror(),
// but supports all windows error messages
static const char *winapi_strerror(const int errorno) {
char *errmsg = NULL;
FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM |
FORMAT_MESSAGE_IGNORE_INSERTS, NULL, errorno,
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), (LPTSTR)&errmsg, 0, NULL);
if (errmsg) {
// 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
return "Unknown error";
}
}
Local<Value> WinapiErrnoException(int errorno,
const char* syscall,
const char* msg,
const char* path) {
Environment* env = Environment::GetCurrent(node_isolate);
Local<Value> e;
if (!msg || !msg[0]) {
msg = winapi_strerror(errorno);
}
Local<String> message = OneByteString(node_isolate, msg);
if (path) {
Local<String> cons1 =
String::Concat(message, FIXED_ONE_BYTE_STRING(node_isolate, " '"));
Local<String> cons2 =
String::Concat(cons1, String::NewFromUtf8(node_isolate, path));
Local<String> cons3 =
String::Concat(cons2, FIXED_ONE_BYTE_STRING(node_isolate, "'"));
e = Exception::Error(cons3);
} else {
e = Exception::Error(message);
}
Local<Object> obj = e->ToObject();
obj->Set(env->errno_string(), Integer::New(errorno, node_isolate));
if (path != NULL) {
obj->Set(env->path_string(), String::NewFromUtf8(node_isolate, path));
}
if (syscall != NULL) {
obj->Set(env->syscall_string(), OneByteString(node_isolate, syscall));
}
return e;
}
#endif
void SetupAsyncListener(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args.GetIsolate());
HandleScope handle_scope(args.GetIsolate());
assert(args[0]->IsObject());
assert(args[1]->IsFunction());
assert(args[2]->IsFunction());
assert(args[3]->IsFunction());
assert(args[4]->IsFunction());
assert(args[5]->IsFunction());
env->set_async_listener_run_function(args[1].As<Function>());
env->set_async_listener_load_function(args[2].As<Function>());
env->set_async_listener_unload_function(args[3].As<Function>());
env->set_async_listener_push_function(args[4].As<Function>());
env->set_async_listener_strip_function(args[5].As<Function>());
Local<Object> async_listener_flag_obj = args[0].As<Object>();
Environment::AsyncListener* async_listener = env->async_listener();
async_listener_flag_obj->SetIndexedPropertiesToExternalArrayData(
async_listener->fields(),
kExternalUnsignedIntArray,
async_listener->fields_count());
// Do a little housekeeping.
env->process_object()->Delete(
FIXED_ONE_BYTE_STRING(args.GetIsolate(), "_setupAsyncListener"));
}
void SetupNextTick(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args.GetIsolate());
HandleScope handle_scope(args.GetIsolate());
assert(args[0]->IsObject() && args[1]->IsFunction());
// Values use to cross communicate with processNextTick.
Local<Object> tick_info_obj = args[0].As<Object>();
tick_info_obj->SetIndexedPropertiesToExternalArrayData(
env->tick_info()->fields(),
kExternalUnsignedIntArray,
env->tick_info()->fields_count());
env->set_tick_callback_function(args[1].As<Function>());
// Do a little housekeeping.
env->process_object()->Delete(
FIXED_ONE_BYTE_STRING(args.GetIsolate(), "_setupNextTick"));
}
Handle<Value> MakeCallback(Environment* env,
Handle<Object> object,
const Handle<Function> callback,
int argc,
Handle<Value> argv[]) {
// If you hit this assertion, you forgot to enter the v8::Context first.
assert(env->context() == env->isolate()->GetCurrentContext());
Local<Object> process = env->process_object();
TryCatch try_catch;
try_catch.SetVerbose(true);
// TODO(trevnorris): This is sucky for performance. Fix it.
bool has_async_queue = object->Has(env->async_queue_string());
if (has_async_queue) {
Local<Value> argv[] = { object };
env->async_listener_load_function()->Call(process, ARRAY_SIZE(argv), argv);
if (try_catch.HasCaught())
return Undefined(node_isolate);
}
Local<Value> ret = callback->Call(object, argc, argv);
if (try_catch.HasCaught()) {
return Undefined(node_isolate);
}
if (has_async_queue) {
Local<Value> val = object.As<Value>();
env->async_listener_unload_function()->Call(process, 1, &val);
if (try_catch.HasCaught())
return Undefined(node_isolate);
}
Environment::TickInfo* tick_info = env->tick_info();
if (tick_info->in_tick()) {
return ret;
}
if (tick_info->length() == 0) {
tick_info->set_index(0);
return ret;
}
tick_info->set_in_tick(true);
// process nextTicks after call
env->tick_callback_function()->Call(process, 0, NULL);
tick_info->set_in_tick(false);
if (try_catch.HasCaught()) {
tick_info->set_last_threw(true);
return Undefined(node_isolate);
}
return ret;
}
// Internal only.
Handle<Value> MakeCallback(Environment* env,
const Handle<Object> object,
uint32_t index,
int argc,
Handle<Value> argv[]) {
Local<Function> callback = object->Get(index).As<Function>();
assert(callback->IsFunction());
return MakeCallback(env, object, callback, argc, argv);
}
Handle<Value> MakeCallback(Environment* env,
const Handle<Object> object,
const Handle<String> symbol,
int argc,
Handle<Value> argv[]) {
Local<Function> callback = object->Get(symbol).As<Function>();
assert(callback->IsFunction());
return MakeCallback(env, object, callback, argc, argv);
}
Handle<Value> MakeCallback(Environment* env,
const Handle<Object> object,
const char* method,
int argc,
Handle<Value> argv[]) {
Local<String> method_string = OneByteString(node_isolate, method);
return MakeCallback(env, object, method_string, argc, argv);
}
Handle<Value> MakeCallback(const Handle<Object> object,
const char* method,
int argc,
Handle<Value> argv[]) {
Local<Context> context = object->CreationContext();
Environment* env = Environment::GetCurrent(context);
Context::Scope context_scope(context);
HandleScope handle_scope(env->isolate());
return handle_scope.Close(MakeCallback(env, object, method, argc, argv));
}
Handle<Value> MakeCallback(const Handle<Object> object,
const Handle<String> symbol,
int argc,
Handle<Value> argv[]) {
Local<Context> context = object->CreationContext();
Environment* env = Environment::GetCurrent(context);
Context::Scope context_scope(context);
HandleScope handle_scope(env->isolate());
return handle_scope.Close(MakeCallback(env, object, symbol, argc, argv));
}
Handle<Value> MakeCallback(const Handle<Object> object,
const Handle<Function> callback,
int argc,
Handle<Value> argv[]) {
Local<Context> context = object->CreationContext();
Environment* env = Environment::GetCurrent(context);
Context::Scope context_scope(context);
HandleScope handle_scope(env->isolate());
return handle_scope.Close(MakeCallback(env, object, callback, argc, argv));
}
enum encoding ParseEncoding(Handle<Value> encoding_v, enum encoding _default) {
HandleScope scope(node_isolate);
if (!encoding_v->IsString())
return _default;
String::Utf8Value encoding(encoding_v);
if (strcasecmp(*encoding, "utf8") == 0) {
return UTF8;
} else if (strcasecmp(*encoding, "utf-8") == 0) {
return UTF8;
} else if (strcasecmp(*encoding, "ascii") == 0) {
return ASCII;
} else if (strcasecmp(*encoding, "base64") == 0) {
return BASE64;
} else if (strcasecmp(*encoding, "ucs2") == 0) {
return UCS2;
} else if (strcasecmp(*encoding, "ucs-2") == 0) {
return UCS2;
} else if (strcasecmp(*encoding, "utf16le") == 0) {
return UCS2;
} else if (strcasecmp(*encoding, "utf-16le") == 0) {
return UCS2;
} else if (strcasecmp(*encoding, "binary") == 0) {
return BINARY;
} else if (strcasecmp(*encoding, "buffer") == 0) {
return BUFFER;
} else if (strcasecmp(*encoding, "hex") == 0) {
return HEX;
} else if (strcasecmp(*encoding, "raw") == 0) {
if (!no_deprecation) {
fprintf(stderr, "'raw' (array of integers) has been removed. "
"Use 'binary'.\n");
}
return BINARY;
} else if (strcasecmp(*encoding, "raws") == 0) {
if (!no_deprecation) {
fprintf(stderr, "'raws' encoding has been renamed to 'binary'. "
"Please update your code.\n");
}
return BINARY;
} else {
return _default;
}
}
Local<Value> Encode(const void *buf, size_t len, enum encoding encoding) {
return StringBytes::Encode(static_cast<const char*>(buf),
len,
encoding);
}
// Returns -1 if the handle was not valid for decoding
ssize_t DecodeBytes(v8::Handle<v8::Value> val, enum encoding encoding) {
HandleScope scope(node_isolate);
if (val->IsArray()) {
fprintf(stderr, "'raw' encoding (array of integers) has been removed. "
"Use 'binary'.\n");
assert(0);
return -1;
}
return StringBytes::Size(val, encoding);
}
#ifndef MIN
# define MIN(a, b) ((a) < (b) ? (a) : (b))
#endif
// Returns number of bytes written.
ssize_t DecodeWrite(char *buf,
size_t buflen,
v8::Handle<v8::Value> val,
enum encoding encoding) {
return StringBytes::Write(buf, buflen, val, encoding, NULL);
}
void DisplayExceptionLine(Handle<Message> message) {
// Prevent re-entry into this function. For example, if there is
// a throw from a program in vm.runInThisContext(code, filename, true),
// then we want to show the original failure, not the secondary one.
static bool displayed_error = false;
if (displayed_error)
return;
displayed_error = true;
uv_tty_reset_mode();
fprintf(stderr, "\n");
if (!message.IsEmpty()) {
// Print (filename):(line number): (message).
String::Utf8Value filename(message->GetScriptResourceName());
const char* filename_string = *filename;
int linenum = message->GetLineNumber();
fprintf(stderr, "%s:%i\n", filename_string, linenum);
// Print line of source code.
String::Utf8Value sourceline(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();
int end = message->GetEndColumn();
fprintf(stderr, "%s\n", sourceline_string);
// Print wavy underline (GetUnderline is deprecated).
for (int i = 0; i < start; i++) {
fputc((sourceline_string[i] == '\t') ? '\t' : ' ', stderr);
}
for (int i = start; i < end; i++) {
fputc('^', stderr);
}
fputc('\n', stderr);
}
}
static void ReportException(Handle<Value> er, Handle<Message> message) {
HandleScope scope(node_isolate);
DisplayExceptionLine(message);
Local<Value> trace_value(
er->ToObject()->Get(FIXED_ONE_BYTE_STRING(node_isolate, "stack")));
String::Utf8Value trace(trace_value);
// range errors have a trace member set to undefined
if (trace.length() > 0 && !trace_value->IsUndefined()) {
fprintf(stderr, "%s\n", *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(FIXED_ONE_BYTE_STRING(node_isolate, "message"));
name = err_obj->Get(FIXED_ONE_BYTE_STRING(node_isolate, "name"));
}
if (message.IsEmpty() ||
message->IsUndefined() ||
name.IsEmpty() ||
name->IsUndefined()) {
// Not an error object. Just print as-is.
String::Utf8Value message(er);
fprintf(stderr, "%s\n", *message);
} else {
String::Utf8Value name_string(name);
String::Utf8Value message_string(message);
fprintf(stderr, "%s: %s\n", *name_string, *message_string);
}
}
fflush(stderr);
}
static void ReportException(const TryCatch& try_catch) {
ReportException(try_catch.Exception(), try_catch.Message());
}
// Executes a str within the current v8 context.
Local<Value> ExecuteString(Handle<String> source, Handle<Value> filename) {
HandleScope scope(node_isolate);
TryCatch try_catch;
// try_catch must be nonverbose to disable FatalException() handler,
// we will handle exceptions ourself.
try_catch.SetVerbose(false);
Local<v8::Script> script = v8::Script::Compile(source, filename);
if (script.IsEmpty()) {
ReportException(try_catch);
exit(3);
}
Local<Value> result = script->Run();
if (result.IsEmpty()) {
ReportException(try_catch);
exit(4);
}
return scope.Close(result);
}
static void GetActiveRequests(const FunctionCallbackInfo<Value>& args) {
HandleScope scope(node_isolate);
Local<Array> ary = Array::New();
QUEUE* q = NULL;
int i = 0;
QUEUE_FOREACH(q, &req_wrap_queue) {
ReqWrap<uv_req_t>* w = CONTAINER_OF(q, ReqWrap<uv_req_t>, req_wrap_queue_);
if (w->persistent().IsEmpty())
continue;
ary->Set(i++, w->object());
}
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) {
HandleScope scope(node_isolate);
Local<Array> ary = Array::New();
QUEUE* q = NULL;
int i = 0;
Local<String> owner_sym = FIXED_ONE_BYTE_STRING(node_isolate, "owner");
QUEUE_FOREACH(q, &handle_wrap_queue) {
HandleWrap* w = CONTAINER_OF(q, HandleWrap, handle_wrap_queue_);
if (w->persistent().IsEmpty() || (w->flags_ & HandleWrap::kUnref))
continue;
Local<Object> object = w->object();
Local<Value> owner = object->Get(owner_sym);
if (owner->IsUndefined())
owner = object;
ary->Set(i++, owner);
}
args.GetReturnValue().Set(ary);
}
static void Abort(const FunctionCallbackInfo<Value>& args) {
abort();
}
static void Chdir(const FunctionCallbackInfo<Value>& args) {
HandleScope scope(node_isolate);
if (args.Length() != 1 || !args[0]->IsString()) {
return ThrowError("Bad argument."); // FIXME(bnoordhuis) ThrowTypeError?
}
String::Utf8Value path(args[0]);
int err = uv_chdir(*path);
if (err) {
return ThrowUVException(err, "uv_chdir");
}
}
static void Cwd(const FunctionCallbackInfo<Value>& args) {
HandleScope scope(node_isolate);
#ifdef _WIN32
/* MAX_PATH is in characters, not bytes. Make sure we have enough headroom. */
char buf[MAX_PATH * 4 + 1];
#else
char buf[PATH_MAX + 1];
#endif
int err = uv_cwd(buf, ARRAY_SIZE(buf) - 1);
if (err) {
return ThrowUVException(err, "uv_cwd");
}
buf[ARRAY_SIZE(buf) - 1] = '\0';
Local<String> cwd = String::NewFromUtf8(node_isolate, buf);
args.GetReturnValue().Set(cwd);
}
static void Umask(const FunctionCallbackInfo<Value>& args) {
HandleScope scope(node_isolate);
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 ThrowTypeError("argument must be an integer or octal string.");
} else {
int oct;
if (args[0]->IsInt32()) {
oct = args[0]->Uint32Value();
} else {
oct = 0;
String::Utf8Value str(args[0]);
// Parse the octal string.
for (int i = 0; i < str.length(); i++) {
char c = (*str)[i];
if (c > '7' || c < '0') {
return 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 = NULL;
if (getpwnam_r(name, &pwd, buf, sizeof(buf), &pp) == 0 && pp != NULL) {
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 = NULL;
if ((rc = getpwuid_r(uid, &pwd, buf, sizeof(buf), &pp)) == 0 && pp != NULL) {
return strdup(pp->pw_name);
}
if (rc == 0) {
errno = ENOENT;
}
return NULL;
}
static gid_t gid_by_name(const char* name) {
struct group pwd;
struct group* pp;
char buf[8192];
errno = 0;
pp = NULL;
if (getgrnam_r(name, &pwd, buf, sizeof(buf), &pp) == 0 && pp != NULL) {
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 = NULL;
if ((rc = getgrgid_r(gid, &pwd, buf, sizeof(buf), &pp)) == 0 && pp != NULL) {
return strdup(pp->gr_name);
}
if (rc == 0) {
errno = ENOENT;
}
return NULL;
}
#endif
static uid_t uid_by_name(Handle<Value> value) {
if (value->IsUint32()) {
return static_cast<uid_t>(value->Uint32Value());
} else {
String::Utf8Value name(value);
return uid_by_name(*name);
}
}
static gid_t gid_by_name(Handle<Value> value) {
if (value->IsUint32()) {
return static_cast<gid_t>(value->Uint32Value());
} else {
String::Utf8Value name(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 SetGid(const FunctionCallbackInfo<Value>& args) {
HandleScope scope(node_isolate);
if (!args[0]->IsUint32() && !args[0]->IsString()) {
return ThrowTypeError("setgid argument must be a number or a string");
}
gid_t gid = gid_by_name(args[0]);
if (gid == gid_not_found) {
return ThrowError("setgid group id does not exist");
}
if (setgid(gid)) {
return ThrowErrnoException(errno, "setgid");
}
}
static void SetUid(const FunctionCallbackInfo<Value>& args) {
HandleScope scope(node_isolate);
if (!args[0]->IsUint32() && !args[0]->IsString()) {
return ThrowTypeError("setuid argument must be a number or a string");
}
uid_t uid = uid_by_name(args[0]);
if (uid == uid_not_found) {
return ThrowError("setuid user id does not exist");
}
if (setuid(uid)) {
return ThrowErrnoException(errno, "setuid");
}
}
static void GetGroups(const FunctionCallbackInfo<Value>& args) {
HandleScope scope(node_isolate);
int ngroups = getgroups(0, NULL);
if (ngroups == -1) {
return ThrowErrnoException(errno, "getgroups");
}
gid_t* groups = new gid_t[ngroups];
ngroups = getgroups(ngroups, groups);
if (ngroups == -1) {
delete[] groups;
return ThrowErrnoException(errno, "getgroups");
}
Local<Array> groups_list = Array::New(ngroups);
bool seen_egid = false;
gid_t egid = getegid();
for (int i = 0; i < ngroups; i++) {
groups_list->Set(i, Integer::New(groups[i], node_isolate));
if (groups[i] == egid)
seen_egid = true;
}
delete[] groups;
if (seen_egid == false) {
groups_list->Set(ngroups, Integer::New(egid, node_isolate));
}
args.GetReturnValue().Set(groups_list);
}
static void SetGroups(const FunctionCallbackInfo<Value>& args) {
HandleScope scope(node_isolate);
if (!args[0]->IsArray()) {
return 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(groups_list->Get(i));
if (gid == gid_not_found) {
delete[] groups;
return ThrowError("group name not found");
}
groups[i] = gid;
}
int rc = setgroups(size, groups);
delete[] groups;
if (rc == -1) {
return ThrowErrnoException(errno, "setgroups");
}
}
static void InitGroups(const FunctionCallbackInfo<Value>& args) {
HandleScope scope(node_isolate);
if (!args[0]->IsUint32() && !args[0]->IsString()) {
return ThrowTypeError("argument 1 must be a number or a string");
}
if (!args[1]->IsUint32() && !args[1]->IsString()) {
return ThrowTypeError("argument 2 must be a number or a string");
}
String::Utf8Value arg0(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 == NULL) {
return ThrowError("initgroups user not found");
}
extra_group = gid_by_name(args[1]);
if (extra_group == gid_not_found) {
if (must_free)
free(user);
return ThrowError("initgroups extra group not found");
}
int rc = initgroups(user, extra_group);
if (must_free) {
free(user);
}
if (rc) {
return ThrowErrnoException(errno, "initgroups");
}
}
#endif // __POSIX__ && !defined(__ANDROID__)
void Exit(const FunctionCallbackInfo<Value>& args) {
HandleScope scope(node_isolate);
exit(args[0]->IntegerValue());
}
static void Uptime(const FunctionCallbackInfo<Value>& args) {
HandleScope scope(node_isolate);
double uptime;
if (uv_uptime(&uptime))
return;
args.GetReturnValue().Set(uptime - prog_start_time);
}
void MemoryUsage(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args.GetIsolate());
HandleScope handle_scope(args.GetIsolate());
size_t rss;
int err = uv_resident_set_memory(&rss);
if (err) {
return ThrowUVException(err, "uv_resident_set_memory");
}
// V8 memory usage
HeapStatistics v8_heap_stats;
node_isolate->GetHeapStatistics(&v8_heap_stats);
Local<Integer> heap_total =
Integer::NewFromUnsigned(v8_heap_stats.total_heap_size(), node_isolate);
Local<Integer> heap_used =
Integer::NewFromUnsigned(v8_heap_stats.used_heap_size(), node_isolate);
Local<Object> info = Object::New();
info->Set(env->rss_string(), Number::New(node_isolate, rss));
info->Set(env->heap_total_string(), heap_total);
info->Set(env->heap_used_string(), heap_used);
args.GetReturnValue().Set(info);
}
void Kill(const FunctionCallbackInfo<Value>& args) {
HandleScope scope(node_isolate);
if (args.Length() != 2) {
return ThrowError("Bad argument.");
}
int pid = args[0]->IntegerValue();
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 returns an Array with 2 entries representing seconds
// and nanoseconds, to avoid any integer overflow possibility.
// Pass in an Array from a previous hrtime() call to instead get a time diff.
void Hrtime(const FunctionCallbackInfo<Value>& args) {
HandleScope scope(node_isolate);
uint64_t t = uv_hrtime();
if (args.Length() > 0) {
// return a time diff tuple
if (!args[0]->IsArray()) {
return ThrowTypeError("process.hrtime() only accepts an Array tuple.");
}
Local<Array> inArray = Local<Array>::Cast(args[0]);
uint64_t seconds = inArray->Get(0)->Uint32Value();
uint64_t nanos = inArray->Get(1)->Uint32Value();
t -= (seconds * NANOS_PER_SEC) + nanos;
}
Local<Array> tuple = Array::New(2);
tuple->Set(0, Integer::NewFromUnsigned(t / NANOS_PER_SEC, node_isolate));
tuple->Set(1, Integer::NewFromUnsigned(t % NANOS_PER_SEC, node_isolate));
args.GetReturnValue().Set(tuple);
}
typedef void (UV_DYNAMIC* extInit)(Handle<Object> exports);
// 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.GetIsolate());
HandleScope handle_scope(args.GetIsolate());
char symbol[1024], *base, *pos;
uv_lib_t lib;
int r;
if (args.Length() < 2) {
return ThrowError("process.dlopen takes exactly 2 arguments.");
}
Local<Object> module = args[0]->ToObject(); // Cast
String::Utf8Value filename(args[1]); // Cast
Local<String> exports_string = env->exports_string();
Local<Object> exports = module->Get(exports_string)->ToObject();
if (uv_dlopen(*filename, &lib)) {
Local<String> errmsg = OneByteString(env->isolate(), uv_dlerror(&lib));
#ifdef _WIN32
// Windows needs to add the filename into the error message
errmsg = String::Concat(errmsg, args[1]->ToString());
#endif // _WIN32
ThrowException(Exception::Error(errmsg));
return;
}
String::Utf8Value path(args[1]);
base = *path;
/* Find the shared library filename within the full path. */
#ifdef __POSIX__
pos = strrchr(base, '/');
if (pos != NULL) {
base = pos + 1;
}
#else // Windows
for (;;) {
pos = strpbrk(base, "\\/:");
if (pos == NULL) {
break;
}
base = pos + 1;
}
#endif // __POSIX__
/* Strip the .node extension. */
pos = strrchr(base, '.');
if (pos != NULL) {
*pos = '\0';
}
/* Add the `_module` suffix to the extension name. */
r = snprintf(symbol, sizeof symbol, "%s_module", base);
if (r <= 0 || static_cast<size_t>(r) >= sizeof symbol) {
return ThrowError("Out of memory.");
}
/* Replace dashes with underscores. When loading foo-bar.node,
* look for foo_bar_module, not foo-bar_module.
*/
for (pos = symbol; *pos != '\0'; ++pos) {
if (*pos == '-')
*pos = '_';
}
node_module_struct *mod;
if (uv_dlsym(&lib, symbol, reinterpret_cast<void**>(&mod))) {
char errmsg[1024];
snprintf(errmsg, sizeof(errmsg), "Symbol %s not found.", symbol);
return ThrowError(errmsg);
}
if (mod->version != NODE_MODULE_VERSION) {
char errmsg[1024];
snprintf(errmsg,
sizeof(errmsg),
"Module version mismatch. Expected %d, got %d.",
NODE_MODULE_VERSION, mod->version);
return ThrowError(errmsg);
}
// Execute the C++ module
if (mod->register_context_func != NULL) {
mod->register_context_func(exports, module, env->context());
} else if (mod->register_func != NULL) {
mod->register_func(exports, module);
} else {
return ThrowError("Module has no declared entry point.");
}
// 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) {
fprintf(stderr, "FATAL ERROR: %s %s\n", location, message);
} else {
fprintf(stderr, "FATAL ERROR: %s\n", message);
}
fflush(stderr);
#if defined(DEBUG)
abort();
#endif
exit(5);
}
NO_RETURN void FatalError(const char* location, const char* message) {
OnFatalError(location, message);
// to supress compiler warning
abort();
}
void FatalException(Handle<Value> error, Handle<Message> message) {
HandleScope scope(node_isolate);
Environment* env = Environment::GetCurrent(node_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>();
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(error, message);
exit(6);
}
TryCatch fatal_try_catch;
// 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(fatal_try_catch);
exit(7);
}
if (false == caught->BooleanValue()) {
ReportException(error, message);
exit(1);
}
}
void FatalException(const TryCatch& try_catch) {
HandleScope scope(node_isolate);
// TODO(bajtos) do not call FatalException if try_catch is verbose
// (requires V8 API to expose getter for try_catch.is_verbose_)
FatalException(try_catch.Exception(), try_catch.Message());
}
void OnMessage(Handle<Message> message, Handle<Value> error) {
// The current version of V8 sends messages for errors only
// (thus `error` is always set).
FatalException(error, message);
}
static void Binding(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args.GetIsolate());
HandleScope handle_scope(args.GetIsolate());
Local<String> module = args[0]->ToString();
String::Utf8Value module_v(module);
Local<Object> cache = env->binding_cache_object();
Local<Object> exports;
if (cache->Has(module)) {
exports = cache->Get(module)->ToObject();
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(node_isolate, buf));
node_module_struct* mod = get_builtin_module(*module_v);
if (mod != NULL) {
exports = Object::New();
// Internal bindings don't have a "module" object, only exports.
assert(mod->register_func == NULL);
assert(mod->register_context_func != NULL);
Local<Value> unused = Undefined(env->isolate());
mod->register_context_func(exports, unused, env->context());
cache->Set(module, exports);
} else if (!strcmp(*module_v, "constants")) {
exports = Object::New();
DefineConstants(exports);
cache->Set(module, exports);
} else if (!strcmp(*module_v, "natives")) {
exports = Object::New();
DefineJavaScript(exports);
cache->Set(module, exports);
} else {
return ThrowError("No such module");
}
args.GetReturnValue().Set(exports);
}
static void ProcessTitleGetter(Local<String> property,
const PropertyCallbackInfo<Value>& info) {
HandleScope scope(node_isolate);
char buffer[512];
uv_get_process_title(buffer, sizeof(buffer));
info.GetReturnValue().Set(String::NewFromUtf8(node_isolate, buffer));
}
static void ProcessTitleSetter(Local<String> property,
Local<Value> value,
const PropertyCallbackInfo<void>& info) {
HandleScope scope(node_isolate);
String::Utf8Value title(value);
// TODO(piscisaureus): protect with a lock
uv_set_process_title(*title);
}
static void EnvGetter(Local<String> property,
const PropertyCallbackInfo<Value>& info) {
HandleScope scope(node_isolate);
#ifdef __POSIX__
String::Utf8Value key(property);
const char* val = getenv(*key);
if (val) {
return info.GetReturnValue().Set(String::NewFromUtf8(node_isolate, val));
}
#else // _WIN32
String::Value key(property);
WCHAR buffer[32767]; // The maximum size allowed for environment variables.
DWORD result = GetEnvironmentVariableW(reinterpret_cast<WCHAR*>(*key),
buffer,
ARRAY_SIZE(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 < ARRAY_SIZE(buffer)) {
const uint16_t* two_byte_buffer = reinterpret_cast<const uint16_t*>(buffer);
Local<String> rc = String::NewFromTwoByte(node_isolate, two_byte_buffer);
return info.GetReturnValue().Set(rc);
}
#endif
// Not found. Fetch from prototype.
info.GetReturnValue().Set(
info.Data().As<Object>()->Get(property));
}
static void EnvSetter(Local<String> property,
Local<Value> value,
const PropertyCallbackInfo<Value>& info) {
HandleScope scope(node_isolate);
#ifdef __POSIX__
String::Utf8Value key(property);
String::Utf8Value val(value);
setenv(*key, *val, 1);
#else // _WIN32
String::Value key(property);
String::Value val(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 rval.
info.GetReturnValue().Set(value);
}
static void EnvQuery(Local<String> property,
const PropertyCallbackInfo<Integer>& info) {
HandleScope scope(node_isolate);
int32_t rc = -1; // Not found unless proven otherwise.
#ifdef __POSIX__
String::Utf8Value key(property);
if (getenv(*key))
rc = 0;
#else // _WIN32
String::Value key(property);
WCHAR* key_ptr = reinterpret_cast<WCHAR*>(*key);
if (GetEnvironmentVariableW(key_ptr, NULL, 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<String> property,
const PropertyCallbackInfo<Boolean>& info) {
HandleScope scope(node_isolate);
bool rc = true;
#ifdef __POSIX__
String::Utf8Value key(property);
rc = getenv(*key) != NULL;
if (rc)
unsetenv(*key);
#else
String::Value key(property);
WCHAR* key_ptr = reinterpret_cast<WCHAR*>(*key);
if (key_ptr[0] == L'=' || !SetEnvironmentVariableW(key_ptr, NULL)) {
// Deletion failed. Return true if the key wasn't there in the first place,
// false if it is still there.
rc = GetEnvironmentVariableW(key_ptr, NULL, NULL) == 0 &&
GetLastError() != ERROR_SUCCESS;
}
#endif
info.GetReturnValue().Set(rc);
}
static void EnvEnumerator(const PropertyCallbackInfo<Array>& info) {
HandleScope scope(node_isolate);
#ifdef __POSIX__
int size = 0;
while (environ[size])
size++;
Local<Array> env = Array::New(size);
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);
Local<String> name = String::NewFromUtf8(node_isolate,
var,
String::kNormalString,
length);
env->Set(i, name);
}
#else // _WIN32
WCHAR* environment = GetEnvironmentStringsW();
if (environment == NULL)
return; // This should not happen.
Local<Array> env = Array::New();
WCHAR* p = environment;
int i = 0;
while (*p != NULL) {
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;
Local<String> value = String::NewFromTwoByte(node_isolate,
two_byte_buffer,
String::kNormalString,
two_byte_buffer_len);
env->Set(i++, value);
p = s + wcslen(s) + 1;
}
FreeEnvironmentStringsW(environment);
#endif
info.GetReturnValue().Set(env);
}
static Handle<Object> GetFeatures() {
HandleScope scope(node_isolate);
Local<Object> obj = Object::New();
#if defined(DEBUG) && DEBUG
Local<Value> debug = True(node_isolate);
#else
Local<Value> debug = False(node_isolate);
#endif // defined(DEBUG) && DEBUG
obj->Set(FIXED_ONE_BYTE_STRING(node_isolate, "debug"), debug);
obj->Set(FIXED_ONE_BYTE_STRING(node_isolate, "uv"), True(node_isolate));
// TODO(bnoordhuis) ping libuv
obj->Set(FIXED_ONE_BYTE_STRING(node_isolate, "ipv6"), True(node_isolate));
#ifdef OPENSSL_NPN_NEGOTIATED
Local<Boolean> tls_npn = True(node_isolate);
#else
Local<Boolean> tls_npn = False(node_isolate);
#endif
obj->Set(FIXED_ONE_BYTE_STRING(node_isolate, "tls_npn"), tls_npn);
#ifdef SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
Local<Boolean> tls_sni = True(node_isolate);
#else
Local<Boolean> tls_sni = False(node_isolate);
#endif
obj->Set(FIXED_ONE_BYTE_STRING(node_isolate, "tls_sni"), tls_sni);
obj->Set(FIXED_ONE_BYTE_STRING(node_isolate, "tls"),
Boolean::New(get_builtin_module("crypto") != NULL));
return scope.Close(obj);
}
static void DebugPortGetter(Local<String> property,
const PropertyCallbackInfo<Value>& info) {
HandleScope scope(node_isolate);
info.GetReturnValue().Set(debug_port);
}
static void DebugPortSetter(Local<String> property,
Local<Value> value,
const PropertyCallbackInfo<void>& info) {
HandleScope scope(node_isolate);
debug_port = value->NumberValue();
}
static void DebugProcess(const FunctionCallbackInfo<Value>& args);
static void DebugPause(const FunctionCallbackInfo<Value>& args);
static void DebugEnd(const FunctionCallbackInfo<Value>& args);
void NeedImmediateCallbackGetter(Local<String> property,
const PropertyCallbackInfo<Value>& info) {
Environment* env = Environment::GetCurrent(info.GetIsolate());
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<String> property,
Local<Value> value,
const PropertyCallbackInfo<void>& info) {
Environment* env = Environment::GetCurrent(info.GetIsolate());
HandleScope handle_scope(info.GetIsolate());
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 SetIdle(uv_prepare_t* handle, int) {
Environment* env = Environment::from_idle_prepare_handle(handle);
env->isolate()->GetCpuProfiler()->SetIdle(true);
}
void ClearIdle(uv_check_t* handle, int) {
Environment* env = Environment::from_idle_check_handle(handle);
env->isolate()->GetCpuProfiler()->SetIdle(false);
}
void StartProfilerIdleNotifier(Environment* env) {
uv_prepare_start(env->idle_prepare_handle(), SetIdle);
uv_check_start(env->idle_check_handle(), ClearIdle);
}
void StopProfilerIdleNotifier(Environment* env) {
uv_prepare_stop(env->idle_prepare_handle());
uv_check_stop(env->idle_check_handle());
}
void StartProfilerIdleNotifier(const FunctionCallbackInfo<Value>& args) {
StartProfilerIdleNotifier(Environment::GetCurrent(args.GetIsolate()));
}
void StopProfilerIdleNotifier(const FunctionCallbackInfo<Value>& args) {
StopProfilerIdleNotifier(Environment::GetCurrent(args.GetIsolate()));
}
#define READONLY_PROPERTY(obj, str, var) \
do { \
obj->Set(OneByteString(node_isolate, str), var, v8::ReadOnly); \
} while (0)
void SetupProcessObject(Environment* env,
int argc,
const char* const* argv,
int exec_argc,
const char* const* exec_argv) {
HandleScope scope(node_isolate);
Local<Object> process = env->process_object();
process->SetAccessor(FIXED_ONE_BYTE_STRING(node_isolate, "title"),
ProcessTitleGetter,
ProcessTitleSetter);
// process.version
READONLY_PROPERTY(process,
"version",
FIXED_ONE_BYTE_STRING(node_isolate, NODE_VERSION));
// process.moduleLoadList
READONLY_PROPERTY(process,
"moduleLoadList",
env->module_load_list_array());
// process.versions
Local<Object> versions = Object::New();
READONLY_PROPERTY(process, "versions", versions);
const char http_parser_version[] = NODE_STRINGIFY(HTTP_PARSER_VERSION_MAJOR)
"."
NODE_STRINGIFY(HTTP_PARSER_VERSION_MINOR);
READONLY_PROPERTY(versions,
"http_parser",
FIXED_ONE_BYTE_STRING(node_isolate, http_parser_version));
// +1 to get rid of the leading 'v'
READONLY_PROPERTY(versions,
"node",
OneByteString(node_isolate, NODE_VERSION + 1));
READONLY_PROPERTY(versions,
"v8",
OneByteString(node_isolate, V8::GetVersion()));
READONLY_PROPERTY(versions,
"uv",
OneByteString(node_isolate, uv_version_string()));
READONLY_PROPERTY(versions,
"zlib",
FIXED_ONE_BYTE_STRING(node_isolate, ZLIB_VERSION));
const char node_modules_version[] = NODE_STRINGIFY(NODE_MODULE_VERSION);
READONLY_PROPERTY(versions,
"modules",
FIXED_ONE_BYTE_STRING(node_isolate, node_modules_version));
#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(node_isolate, &OPENSSL_VERSION_TEXT[i], j - i));
}
#endif
// process.arch
READONLY_PROPERTY(process, "arch", OneByteString(node_isolate, ARCH));
// process.platform
READONLY_PROPERTY(process,
"platform",
OneByteString(node_isolate, PLATFORM));
// process.argv
Local<Array> arguments = Array::New(argc);
for (int i = 0; i < argc; ++i) {
arguments->Set(i, String::NewFromUtf8(node_isolate, argv[i]));
}
process->Set(FIXED_ONE_BYTE_STRING(node_isolate, "argv"), arguments);
// process.execArgv
Local<Array> exec_arguments = Array::New(exec_argc);
for (int i = 0; i < exec_argc; ++i) {
exec_arguments->Set(i, String::NewFromUtf8(node_isolate, exec_argv[i]));
}
process->Set(FIXED_ONE_BYTE_STRING(node_isolate, "execArgv"), exec_arguments);
// create process.env
Local<ObjectTemplate> process_env_template = ObjectTemplate::New();
process_env_template->SetNamedPropertyHandler(EnvGetter,
EnvSetter,
EnvQuery,
EnvDeleter,
EnvEnumerator,
Object::New());
Local<Object> process_env = process_env_template->NewInstance();
process->Set(FIXED_ONE_BYTE_STRING(node_isolate, "env"), process_env);
READONLY_PROPERTY(process, "pid", Integer::New(getpid(), node_isolate));
READONLY_PROPERTY(process, "features", GetFeatures());
process->SetAccessor(
FIXED_ONE_BYTE_STRING(node_isolate, "_needImmediateCallback"),
NeedImmediateCallbackGetter,
NeedImmediateCallbackSetter);
// -e, --eval
if (eval_string) {
READONLY_PROPERTY(process,
"_eval",
String::NewFromUtf8(node_isolate, eval_string));
}
// -p, --print
if (print_eval) {
READONLY_PROPERTY(process, "_print_eval", True(node_isolate));
}
// -i, --interactive
if (force_repl) {
READONLY_PROPERTY(process, "_forceRepl", True(node_isolate));
}
// --no-deprecation
if (no_deprecation) {
READONLY_PROPERTY(process, "noDeprecation", True(node_isolate));
}
// --throw-deprecation
if (throw_deprecation) {
READONLY_PROPERTY(process, "throwDeprecation", True(node_isolate));
}
// --trace-deprecation
if (trace_deprecation) {
READONLY_PROPERTY(process, "traceDeprecation", True(node_isolate));
}
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(node_isolate,
exec_path,
String::kNormalString,
exec_path_len);
} else {
exec_path_value = String::NewFromUtf8(node_isolate, argv[0]);
}
process->Set(FIXED_ONE_BYTE_STRING(node_isolate, "execPath"),
exec_path_value);
delete[] exec_path;
process->SetAccessor(FIXED_ONE_BYTE_STRING(node_isolate, "debugPort"),
DebugPortGetter,
DebugPortSetter);
// define various internal methods
NODE_SET_METHOD(process,
"_startProfilerIdleNotifier",
StartProfilerIdleNotifier);
NODE_SET_METHOD(process,
"_stopProfilerIdleNotifier",
StopProfilerIdleNotifier);
NODE_SET_METHOD(process, "_getActiveRequests", GetActiveRequests);
NODE_SET_METHOD(process, "_getActiveHandles", GetActiveHandles);
NODE_SET_METHOD(process, "reallyExit", Exit);
NODE_SET_METHOD(process, "abort", Abort);
NODE_SET_METHOD(process, "chdir", Chdir);
NODE_SET_METHOD(process, "cwd", Cwd);
NODE_SET_METHOD(process, "umask", Umask);
#if defined(__POSIX__) && !defined(__ANDROID__)
NODE_SET_METHOD(process, "getuid", GetUid);
NODE_SET_METHOD(process, "setuid", SetUid);
NODE_SET_METHOD(process, "setgid", SetGid);
NODE_SET_METHOD(process, "getgid", GetGid);
NODE_SET_METHOD(process, "getgroups", GetGroups);
NODE_SET_METHOD(process, "setgroups", SetGroups);
NODE_SET_METHOD(process, "initgroups", InitGroups);
#endif // __POSIX__ && !defined(__ANDROID__)
NODE_SET_METHOD(process, "_kill", Kill);
NODE_SET_METHOD(process, "_debugProcess", DebugProcess);
NODE_SET_METHOD(process, "_debugPause", DebugPause);
NODE_SET_METHOD(process, "_debugEnd", DebugEnd);
NODE_SET_METHOD(process, "hrtime", Hrtime);
NODE_SET_METHOD(process, "dlopen", DLOpen);
NODE_SET_METHOD(process, "uptime", Uptime);
NODE_SET_METHOD(process, "memoryUsage", MemoryUsage);
NODE_SET_METHOD(process, "binding", Binding);
NODE_SET_METHOD(process, "_setupAsyncListener", SetupAsyncListener);
NODE_SET_METHOD(process, "_setupNextTick", SetupNextTick);
// values use to cross communicate with processNextTick
Local<Object> tick_info_obj = Object::New();
tick_info_obj->SetIndexedPropertiesToExternalArrayData(
env->tick_info()->fields(),
kExternalUnsignedIntArray,
env->tick_info()->fields_count());
process->Set(FIXED_ONE_BYTE_STRING(node_isolate, "_tickInfo"), tick_info_obj);
// pre-set _events object for faster emit checks
process->Set(FIXED_ONE_BYTE_STRING(node_isolate, "_events"), Object::New());
}
#undef READONLY_PROPERTY
static void AtExit() {
uv_tty_reset_mode();
}
static void SignalExit(int signal) {
uv_tty_reset_mode();
_exit(128 + signal);
}
// 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) {
HandleScope scope(node_isolate);
assert(args.Length() == 1 && args[0]->IsString() &&
"must be called with a single string");
String::Utf8Value message(args[0]);
fprintf(stderr, "%s\n", *message);
fflush(stderr);
}
void Load(Environment* env) {
HandleScope handle_scope(node_isolate);
// Compile, execute the src/node.js file. (Which was included as static C
// string in node_natives.h. 'natve_node' is the string containing that
// source code.)
// The node.js file returns a function 'f'
atexit(AtExit);
TryCatch try_catch;
// 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);
Local<String> script_name = FIXED_ONE_BYTE_STRING(node_isolate, "node.js");
Local<Value> f_value = ExecuteString(MainSource(), script_name);
if (try_catch.HasCaught()) {
ReportException(try_catch);
exit(10);
}
assert(f_value->IsFunction());
Local<Function> f = Local<Function>::Cast(f_value);
// Now we call 'f' with the 'process' variable that we've built up with
// all our bindings. Inside node.js 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 'src/node.js' setups the module system but do like
// Node's I/O bindings may want to replace 'f' with their own function.
// Add a reference to the global object
Local<Object> global = env->context()->Global();
#if defined HAVE_DTRACE || defined HAVE_ETW
InitDTrace(global);
#endif
#if defined HAVE_PERFCTR
InitPerfCounters(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 enought to break on exception
// thrown during process startup.
try_catch.SetVerbose(true);
NODE_SET_METHOD(env->process_object(), "_rawDebug", RawDebug);
Local<Value> arg = env->process_object();
f->Call(global, 1, &arg);
}
static void PrintHelp();
static void ParseDebugOpt(const char* arg) {
const char *p = 0;
if (strstr(arg, "--debug-port=") == arg) {
p = 1 + strchr(arg, '=');
debug_port = atoi(p);
} else {
use_debug_agent = true;
if (!strcmp(arg, "--debug-brk")) {
debug_wait_connect = true;
return;
} else if (!strcmp(arg, "--debug")) {
return;
} else if (strstr(arg, "--debug-brk=") == arg) {
debug_wait_connect = true;
p = 1 + strchr(arg, '=');
debug_port = atoi(p);
} else if (strstr(arg, "--debug=") == arg) {
p = 1 + strchr(arg, '=');
debug_port = atoi(p);
}
}
if (p && debug_port > 1024 && debug_port < 65536)
return;
fprintf(stderr, "Bad debug option.\n");
if (p)
fprintf(stderr, "Debug port must be in range 1025 to 65535.\n");
PrintHelp();
exit(12);
}
static void PrintHelp() {
printf("Usage: node [options] [ -e script | script.js ] [arguments] \n"
" node debug script.js [arguments] \n"
"\n"
"Options:\n"
" -v, --version print node's version\n"
" -e, --eval script evaluate script\n"
" -p, --print evaluate script and print result\n"
" -i, --interactive always enter the REPL even if stdin\n"
" does not appear to be a terminal\n"
" --no-deprecation silence deprecation warnings\n"
" --trace-deprecation show stack traces on deprecations\n"
" --v8-options print v8 command line options\n"
" --max-stack-size=val set max v8 stack size (bytes)\n"
"\n"
"Environment variables:\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_MODULE_CONTEXTS Set to 1 to load modules in their own\n"
" global contexts.\n"
"NODE_DISABLE_COLORS Set to 1 to disable colors in the REPL\n"
"\n"
"Documentation can be found at http://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];
for (unsigned int i = 0; i < nargs; ++i) {
new_exec_argv[i] = NULL;
new_v8_argv[i] = NULL;
new_argv[i] = NULL;
}
// 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;
while (index < nargs && argv[index][0] == '-') {
const char* const arg = argv[index];
unsigned int args_consumed = 1;
if (strstr(arg, "--debug") == arg) {
ParseDebugOpt(arg);
} 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') != NULL;
bool is_print = strchr(arg, 'p') != NULL;
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 == NULL) {
fprintf(stderr, "%s: %s requires an argument\n", argv[0], arg);
exit(9);
}
} else if (argv[index + 1] != NULL && 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, "--interactive") == 0 || strcmp(arg, "-i") == 0) {
force_repl = true;
} else if (strcmp(arg, "--no-deprecation") == 0) {
no_deprecation = true;
} else if (strcmp(arg, "--trace-deprecation") == 0) {
trace_deprecation = true;
} else if (strcmp(arg, "--throw-deprecation") == 0) {
throw_deprecation = true;
} else if (strcmp(arg, "--v8-options") == 0) {
new_v8_argv[new_v8_argc] = "--help";
new_v8_argc += 1;
} 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);
}
// Called from V8 Debug Agent TCP thread.
static void DispatchMessagesDebugAgentCallback() {
uv_async_send(&dispatch_debug_messages_async);
}
// Called from the main thread.
static void EnableDebug(bool wait_connect) {
assert(debugger_running == false);
Isolate* isolate = node_isolate; // TODO(bnoordhuis) Multi-isolate support.
Isolate::Scope isolate_scope(isolate);
v8::Debug::SetDebugMessageDispatchHandler(DispatchMessagesDebugAgentCallback,
false);
debugger_running = v8::Debug::EnableAgent("node " NODE_VERSION,
debug_port,
wait_connect);
if (debugger_running == false) {
fprintf(stderr, "Starting debugger on port %d failed\n", debug_port);
fflush(stderr);
return;
}
fprintf(stderr, "Debugger listening on port %d\n", debug_port);
fflush(stderr);
Environment* env = Environment::GetCurrentChecked(isolate);
if (env == NULL)
return; // Still starting up.
Context::Scope context_scope(env->context());
HandleScope handle_scope(env->isolate());
Local<Object> message = Object::New();
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", ARRAY_SIZE(argv), argv);
}
// Called from the main thread.
static void DispatchDebugMessagesAsyncCallback(uv_async_t* handle, int status) {
if (debugger_running == false) {
fprintf(stderr, "Starting debugger agent.\n");
EnableDebug(false);
}
Isolate::Scope isolate_scope(node_isolate);
v8::Debug::ProcessDebugMessages();
}
#ifdef __POSIX__
static volatile sig_atomic_t caught_early_debug_signal;
static void EarlyDebugSignalHandler(int signo) {
caught_early_debug_signal = 1;
}
static void InstallEarlyDebugSignalHandler() {
struct sigaction sa;
memset(&sa, 0, sizeof(sa));
sa.sa_handler = EarlyDebugSignalHandler;
sigaction(SIGUSR1, &sa, NULL);
}
static void EnableDebugSignalHandler(int signo) {
// Call only async signal-safe functions here!
v8::Debug::DebugBreak(*static_cast<Isolate* volatile*>(&node_isolate));
uv_async_send(&dispatch_debug_messages_async);
}
static void RegisterSignalHandler(int signal, void (*handler)(int signal)) {
struct sigaction sa;
memset(&sa, 0, sizeof(sa));
sa.sa_handler = handler;
sigfillset(&sa.sa_mask);
sigaction(signal, &sa, NULL);
}
void DebugProcess(const FunctionCallbackInfo<Value>& args) {
HandleScope scope(node_isolate);
if (args.Length() != 1) {
return ThrowError("Invalid number of arguments.");
}
pid_t pid;
int r;
pid = args[0]->IntegerValue();
r = kill(pid, SIGUSR1);
if (r != 0) {
return ThrowErrnoException(errno, "kill");
}
}
static int RegisterDebugSignalHandler() {
// FIXME(bnoordhuis) Should be per-isolate or per-context, not global.
RegisterSignalHandler(SIGUSR1, EnableDebugSignalHandler);
// If we caught a SIGUSR1 during the bootstrap process, re-raise it
// now that the debugger infrastructure is in place.
if (caught_early_debug_signal)
raise(SIGUSR1);
return 0;
}
#endif // __POSIX__
#ifdef _WIN32
DWORD WINAPI EnableDebugThreadProc(void* arg) {
v8::Debug::DebugBreak(*static_cast<Isolate* volatile*>(&node_isolate));
uv_async_send(&dispatch_debug_messages_async);
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,
ARRAY_SIZE(mapping_name)) < 0) {
return -1;
}
mapping_handle = CreateFileMappingW(INVALID_HANDLE_VALUE,
NULL,
PAGE_READWRITE,
0,
sizeof *handler,
mapping_name);
if (mapping_handle == NULL) {
return -1;
}
handler = reinterpret_cast<LPTHREAD_START_ROUTINE*>(
MapViewOfFile(mapping_handle,
FILE_MAP_ALL_ACCESS,
0,
0,
sizeof *handler));
if (handler == NULL) {
CloseHandle(mapping_handle);
return -1;
}
*handler = EnableDebugThreadProc;
UnmapViewOfFile(static_cast<void*>(handler));
return 0;
}
static void DebugProcess(const FunctionCallbackInfo<Value>& args) {
HandleScope scope(node_isolate);
DWORD pid;
HANDLE process = NULL;
HANDLE thread = NULL;
HANDLE mapping = NULL;
wchar_t mapping_name[32];
LPTHREAD_START_ROUTINE* handler = NULL;
if (args.Length() != 1) {
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 == NULL) {
ThrowException(WinapiErrnoException(GetLastError(), "OpenProcess"));
goto out;
}
if (GetDebugSignalHandlerMappingName(pid,
mapping_name,
ARRAY_SIZE(mapping_name)) < 0) {
ThrowErrnoException(errno, "sprintf");
goto out;
}
mapping = OpenFileMappingW(FILE_MAP_READ, FALSE, mapping_name);
if (mapping == NULL) {
ThrowException(WinapiErrnoException(GetLastError(), "OpenFileMappingW"));
goto out;
}
handler = reinterpret_cast<LPTHREAD_START_ROUTINE*>(
MapViewOfFile(mapping,
FILE_MAP_READ,
0,
0,
sizeof *handler));
if (handler == NULL || *handler == NULL) {
ThrowException(WinapiErrnoException(GetLastError(), "MapViewOfFile"));
goto out;
}
thread = CreateRemoteThread(process,
NULL,
0,
*handler,
NULL,
0,
NULL);
if (thread == NULL) {
ThrowException(WinapiErrnoException(GetLastError(), "CreateRemoteThread"));
goto out;
}
// Wait for the thread to terminate
if (WaitForSingleObject(thread, INFINITE) != WAIT_OBJECT_0) {
ThrowException(WinapiErrnoException(GetLastError(), "WaitForSingleObject"));
goto out;
}
out:
if (process != NULL)
CloseHandle(process);
if (thread != NULL)
CloseHandle(thread);
if (handler != NULL)
UnmapViewOfFile(handler);
if (mapping != NULL)
CloseHandle(mapping);
}
#endif // _WIN32
static void DebugPause(const FunctionCallbackInfo<Value>& args) {
v8::Debug::DebugBreak(node_isolate);
}
static void DebugEnd(const FunctionCallbackInfo<Value>& args) {
if (debugger_running) {
v8::Debug::DisableAgent();
debugger_running = false;
}
}
void Init(int* argc,
const char** argv,
int* exec_argc,
const char*** exec_argv) {
// Initialize prog_start_time to get relative uptime.
uv_uptime(&prog_start_time);
// Make inherited handles noninheritable.
uv_disable_stdio_inheritance();
// init async debug messages dispatching
// FIXME(bnoordhuis) Should be per-isolate or per-context, not global.
uv_async_init(uv_default_loop(),
&dispatch_debug_messages_async,
DispatchDebugMessagesAsyncCallback);
uv_unref(reinterpret_cast<uv_handle_t*>(&dispatch_debug_messages_async));
// 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;
}
}
// The const_cast doesn't violate conceptual const-ness. V8 doesn't modify
// the argv array or the elements it points to.
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 = NULL;
if (v8_argc > 1) {
exit(9);
}
if (debug_wait_connect) {
const char expose_debug_as[] = "--expose_debug_as=v8debug";
V8::SetFlagsFromString(expose_debug_as, sizeof(expose_debug_as) - 1);
}
V8::SetArrayBufferAllocator(&ArrayBufferAllocator::the_singleton);
// Fetch a reference to the main isolate, so we have a reference to it
// even when we need it to access it from another (debugger) thread.
node_isolate = Isolate::GetCurrent();
#ifdef __POSIX__
// Raise the open file descriptor limit.
{ // NOLINT (whitespace/braces)
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);
}
}
// Ignore SIGPIPE
RegisterSignalHandler(SIGPIPE, SIG_IGN);
RegisterSignalHandler(SIGINT, SignalExit);
RegisterSignalHandler(SIGTERM, SignalExit);
#endif // __POSIX__
V8::SetFatalErrorHandler(node::OnFatalError);
V8::AddMessageListener(OnMessage);
// If the --debug flag was specified then initialize the debug thread.
if (use_debug_agent) {
EnableDebug(debug_wait_connect);
} else {
RegisterDebugSignalHandler();
}
}
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_ = NULL;
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 EmitExit(Environment* env) {
// process.emit('exit')
Context::Scope context_scope(env->context());
HandleScope handle_scope(env->isolate());
Local<Object> process_object = env->process_object();
process_object->Set(FIXED_ONE_BYTE_STRING(node_isolate, "_exiting"),
True(node_isolate));
Handle<String> exitCode = FIXED_ONE_BYTE_STRING(node_isolate, "exitCode");
int code = process_object->Get(exitCode)->IntegerValue();
Local<Value> args[] = {
FIXED_ONE_BYTE_STRING(node_isolate, "exit"),
Integer::New(code, node_isolate)
};
MakeCallback(env, process_object, "emit", ARRAY_SIZE(args), args);
exit(code);
}
Environment* CreateEnvironment(Isolate* isolate,
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 = Environment::New(context);
uv_check_init(env->event_loop(), env->immediate_check_handle());
uv_unref(
reinterpret_cast<uv_handle_t*>(env->immediate_check_handle()));
uv_idle_init(env->event_loop(), env->immediate_idle_handle());
// Inform V8's CPU profiler when we're idle. The profiler is sampling-based
// but not all samples are created equal; mark the wall clock time spent in
// epoll_wait() and friends so profiling tools can filter it out. The samples
// still end up in v8.log but with state=IDLE rather than state=EXTERNAL.
// TODO(bnoordhuis) Depends on a libuv implementation detail that we should
// probably fortify in the API contract, namely that the last started prepare
// or check watcher runs first. It's not 100% foolproof; if an add-on starts
// a prepare or check watcher after us, any samples attributed to its callback
// will be recorded with state=IDLE.
uv_prepare_init(env->event_loop(), env->idle_prepare_handle());
uv_check_init(env->event_loop(), env->idle_check_handle());
uv_unref(reinterpret_cast<uv_handle_t*>(env->idle_prepare_handle()));
uv_unref(reinterpret_cast<uv_handle_t*>(env->idle_check_handle()));
if (v8_is_profiling) {
StartProfilerIdleNotifier(env);
}
Local<FunctionTemplate> process_template = FunctionTemplate::New();
process_template->SetClassName(FIXED_ONE_BYTE_STRING(isolate, "process"));
Local<Object> process_object = process_template->GetFunction()->NewInstance();
env->set_process_object(process_object);
SetupProcessObject(env, argc, argv, exec_argc, exec_argv);
Load(env);
return env;
}
int Start(int argc, char** argv) {
#if !defined(_WIN32)
// Try hard not to lose SIGUSR1 signals during the bootstrap process.
InstallEarlyDebugSignalHandler();
#endif
assert(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
// V8 on Windows doesn't have a good source of entropy. Seed it from
// OpenSSL's pool.
V8::SetEntropySource(crypto::EntropySource);
#endif
V8::Initialize();
{
Locker locker(node_isolate);
Environment* env =
CreateEnvironment(node_isolate, argc, argv, exec_argc, exec_argv);
Context::Scope context_scope(env->context());
HandleScope handle_scope(env->isolate());
uv_run(env->event_loop(), UV_RUN_DEFAULT);
EmitExit(env);
RunAtExit(env);
env->Dispose();
env = NULL;
}
#ifndef NDEBUG
// Clean up. Not strictly necessary.
V8::Dispose();
#endif // NDEBUG
delete[] exec_argv;
exec_argv = NULL;
return 0;
}
} // namespace node
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