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node/src/node.cc

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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 "req_wrap.h"
#include "handle_wrap.h"
#include "ares.h"
#include "uv.h"
#include "v8-debug.h"
#if defined HAVE_DTRACE || defined HAVE_ETW || defined HAVE_SYSTEMTAP
# include "node_dtrace.h"
#endif
#if defined HAVE_PERFCTR
# include "node_counters.h"
#endif
#include <locale.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#if !defined(_MSC_VER)
#include <strings.h>
#else
#define strcasecmp _stricmp
#endif
#include <limits.h> /* PATH_MAX */
#include <assert.h>
#if !defined(_MSC_VER)
#include <unistd.h> /* setuid, getuid */
#else
#include <direct.h>
#include <process.h>
#define getpid _getpid
#include <io.h>
#define umask _umask
typedef int mode_t;
#endif
#include <errno.h>
#include <sys/types.h>
#include "zlib.h"
#ifdef __POSIX__
# include <pwd.h> /* getpwnam() */
# include <grp.h> /* getgrnam() */
#endif
#include "node_buffer.h"
#include "node_file.h"
#include "node_http_parser.h"
#include "node_constants.h"
#include "node_javascript.h"
#include "node_version.h"
#include "node_string.h"
#if HAVE_OPENSSL
# include "node_crypto.h"
#endif
#if HAVE_SYSTEMTAP
#include "node_systemtap.h"
#endif
#include "node_script.h"
#include "v8_typed_array.h"
using namespace v8;
# ifdef __APPLE__
# include <crt_externs.h>
# define environ (*_NSGetEnviron())
# elif !defined(_MSC_VER)
extern char **environ;
# endif
namespace node {
ngx_queue_t handle_wrap_queue = { &handle_wrap_queue, &handle_wrap_queue };
ngx_queue_t req_wrap_queue = { &req_wrap_queue, &req_wrap_queue };
// declared in req_wrap.h
Persistent<String> process_symbol;
Persistent<String> domain_symbol;
// declared in node_internals.h
Persistent<Object> process;
static Persistent<Function> process_tickFromSpinner;
static Persistent<Function> process_tickCallback;
static Persistent<String> exports_symbol;
static Persistent<String> errno_symbol;
static Persistent<String> syscall_symbol;
static Persistent<String> errpath_symbol;
static Persistent<String> code_symbol;
static Persistent<String> rss_symbol;
static Persistent<String> heap_total_symbol;
static Persistent<String> heap_used_symbol;
static Persistent<String> fatal_exception_symbol;
static Persistent<String> enter_symbol;
static Persistent<String> exit_symbol;
static Persistent<String> disposed_symbol;
static bool print_eval = false;
static bool force_repl = false;
static bool trace_deprecation = false;
static bool throw_deprecation = false;
static char *eval_string = NULL;
static int option_end_index = 0;
static bool use_debug_agent = false;
static bool debug_wait_connect = false;
static int debug_port=5858;
static int max_stack_size = 0;
static bool using_domains = false;
// used by C++ modules as well
bool no_deprecation = false;
static uv_idle_t tick_spinner;
static bool need_tick_cb;
static Persistent<String> tick_callback_sym;
static uv_check_t check_immediate_watcher;
static uv_idle_t idle_immediate_dummy;
static bool need_immediate_cb;
static Persistent<String> immediate_callback_sym;
// for quick ref to tickCallback values
static struct {
uint32_t length;
uint32_t index;
uint32_t depth;
} tick_infobox;
#ifdef OPENSSL_NPN_NEGOTIATED
static bool use_npn = true;
#else
static bool use_npn = false;
#endif
#ifdef SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
static bool use_sni = true;
#else
static bool use_sni = false;
#endif
// process-relative uptime base, initialized at start-up
static double prog_start_time;
static volatile bool debugger_running = false;
static uv_async_t dispatch_debug_messages_async;
// Declared in node_internals.h
Isolate* node_isolate = NULL;
static void Spin(uv_idle_t* handle, int status) {
assert((uv_idle_t*) handle == &tick_spinner);
assert(status == 0);
// Avoid entering a V8 scope.
if (!need_tick_cb) return;
need_tick_cb = false;
uv_idle_stop(&tick_spinner);
HandleScope scope;
if (process_tickFromSpinner.IsEmpty()) {
Local<Value> cb_v = process->Get(String::New("_tickFromSpinner"));
if (!cb_v->IsFunction()) {
fprintf(stderr, "process._tickFromSpinner assigned to non-function\n");
abort();
}
Local<Function> cb = cb_v.As<Function>();
process_tickFromSpinner = Persistent<Function>::New(cb);
}
TryCatch try_catch;
process_tickFromSpinner->Call(process, 0, NULL);
if (try_catch.HasCaught()) {
FatalException(try_catch);
}
}
static Handle<Value> NeedTickCallback(const Arguments& args) {
need_tick_cb = true;
uv_idle_start(&tick_spinner, Spin);
return Undefined();
}
static void CheckImmediate(uv_check_t* handle, int status) {
assert(handle == &check_immediate_watcher);
assert(status == 0);
HandleScope scope;
if (immediate_callback_sym.IsEmpty()) {
immediate_callback_sym = NODE_PSYMBOL("_immediateCallback");
}
MakeCallback(process, immediate_callback_sym, 0, NULL);
}
static void IdleImmediateDummy(uv_idle_t* handle, int status) {
// Do nothing. Only for maintaining event loop
assert(handle == &idle_immediate_dummy);
assert(status == 0);
}
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) {
Local<Value> e;
Local<String> estring = String::NewSymbol(errno_string(errorno));
if (!msg[0]) {
msg = strerror(errorno);
}
Local<String> message = String::NewSymbol(msg);
Local<String> cons1 = String::Concat(estring, String::NewSymbol(", "));
Local<String> cons2 = String::Concat(cons1, message);
if (syscall_symbol.IsEmpty()) {
syscall_symbol = NODE_PSYMBOL("syscall");
errno_symbol = NODE_PSYMBOL("errno");
errpath_symbol = NODE_PSYMBOL("path");
code_symbol = NODE_PSYMBOL("code");
}
if (path) {
Local<String> cons3 = String::Concat(cons2, String::NewSymbol(" '"));
Local<String> cons4 = String::Concat(cons3, String::New(path));
Local<String> cons5 = String::Concat(cons4, String::NewSymbol("'"));
e = Exception::Error(cons5);
} else {
e = Exception::Error(cons2);
}
Local<Object> obj = e->ToObject();
obj->Set(errno_symbol, Integer::New(errorno));
obj->Set(code_symbol, estring);
if (path) obj->Set(errpath_symbol, String::New(path));
if (syscall) obj->Set(syscall_symbol, String::NewSymbol(syscall));
return e;
}
static const char* get_uv_errno_string(int errorno) {
uv_err_t err;
memset(&err, 0, sizeof err);
err.code = (uv_err_code)errorno;
return uv_err_name(err);
}
static const char* get_uv_errno_message(int errorno) {
uv_err_t err;
memset(&err, 0, sizeof err);
err.code = (uv_err_code)errorno;
return uv_strerror(err);
}
// hack alert! copy of ErrnoException, tuned for uv errors
Local<Value> UVException(int errorno,
const char *syscall,
const char *msg,
const char *path) {
if (syscall_symbol.IsEmpty()) {
syscall_symbol = NODE_PSYMBOL("syscall");
errno_symbol = NODE_PSYMBOL("errno");
errpath_symbol = NODE_PSYMBOL("path");
code_symbol = NODE_PSYMBOL("code");
}
if (!msg || !msg[0])
msg = get_uv_errno_message(errorno);
Local<String> estring = String::NewSymbol(get_uv_errno_string(errorno));
Local<String> message = String::NewSymbol(msg);
Local<String> cons1 = String::Concat(estring, String::NewSymbol(", "));
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(String::New("\\\\"), String::New(path + 8));
} else if (strncmp(path, "\\\\?\\", 4) == 0) {
path_str = String::New(path + 4);
} else {
path_str = String::New(path);
}
#else
path_str = String::New(path);
#endif
Local<String> cons3 = String::Concat(cons2, String::NewSymbol(" '"));
Local<String> cons4 = String::Concat(cons3, path_str);
Local<String> cons5 = String::Concat(cons4, String::NewSymbol("'"));
e = Exception::Error(cons5);
} else {
e = Exception::Error(cons2);
}
Local<Object> obj = e->ToObject();
// TODO errno should probably go
obj->Set(errno_symbol, Integer::New(errorno));
obj->Set(code_symbol, estring);
if (path) obj->Set(errpath_symbol, path_str);
if (syscall) obj->Set(syscall_symbol, String::NewSymbol(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) {
Local<Value> e;
if (!msg || !msg[0]) {
msg = winapi_strerror(errorno);
}
Local<String> message = String::NewSymbol(msg);
if (syscall_symbol.IsEmpty()) {
syscall_symbol = NODE_PSYMBOL("syscall");
errno_symbol = NODE_PSYMBOL("errno");
errpath_symbol = NODE_PSYMBOL("path");
code_symbol = NODE_PSYMBOL("code");
}
if (path) {
Local<String> cons1 = String::Concat(message, String::NewSymbol(" '"));
Local<String> cons2 = String::Concat(cons1, String::New(path));
Local<String> cons3 = String::Concat(cons2, String::NewSymbol("'"));
e = Exception::Error(cons3);
} else {
e = Exception::Error(message);
}
Local<Object> obj = e->ToObject();
obj->Set(errno_symbol, Integer::New(errorno));
if (path) obj->Set(errpath_symbol, String::New(path));
if (syscall) obj->Set(syscall_symbol, String::NewSymbol(syscall));
return e;
}
#endif
Handle<Value> FromConstructorTemplate(Persistent<FunctionTemplate> t,
const Arguments& args) {
HandleScope scope;
Local<Value> argv[32];
unsigned argc = args.Length();
if (argc > ARRAY_SIZE(argv)) argc = ARRAY_SIZE(argv);
for (unsigned i = 0; i < argc; ++i) argv[i] = args[i];
return scope.Close(t->GetFunction()->NewInstance(argc, argv));
}
Handle<Value> UsingDomains(const Arguments& args) {
HandleScope scope;
if (using_domains)
return scope.Close(Undefined());
using_domains = true;
Local<Value> tdc_v = process->Get(String::New("_tickDomainCallback"));
Local<Value> ndt_v = process->Get(String::New("_nextDomainTick"));
if (!tdc_v->IsFunction()) {
fprintf(stderr, "process._tickDomainCallback assigned to non-function\n");
abort();
}
if (!ndt_v->IsFunction()) {
fprintf(stderr, "process._nextDomainTick assigned to non-function\n");
abort();
}
Local<Function> tdc = tdc_v.As<Function>();
Local<Function> ndt = ndt_v.As<Function>();
process->Set(String::New("_tickCallback"), tdc);
process->Set(String::New("nextTick"), ndt);
process_tickCallback = Persistent<Function>::New(tdc);
return Undefined();
}
Handle<Value>
MakeDomainCallback(const Handle<Object> object,
const Handle<Function> callback,
int argc,
Handle<Value> argv[]) {
// TODO Hook for long stack traces to be made here.
// lazy load domain specific symbols
if (enter_symbol.IsEmpty()) {
enter_symbol = NODE_PSYMBOL("enter");
exit_symbol = NODE_PSYMBOL("exit");
disposed_symbol = NODE_PSYMBOL("_disposed");
}
Local<Value> domain_v = object->Get(domain_symbol);
Local<Object> domain;
Local<Function> enter;
Local<Function> exit;
TryCatch try_catch;
bool has_domain = domain_v->IsObject();
if (has_domain) {
domain = domain_v->ToObject();
assert(!domain.IsEmpty());
if (domain->Get(disposed_symbol)->IsTrue()) {
// domain has been disposed of.
return Undefined();
}
enter = Local<Function>::Cast(domain->Get(enter_symbol));
assert(!enter.IsEmpty());
enter->Call(domain, 0, NULL);
if (try_catch.HasCaught()) {
FatalException(try_catch);
return Undefined();
}
}
Local<Value> ret = callback->Call(object, argc, argv);
if (try_catch.HasCaught()) {
FatalException(try_catch);
return Undefined();
}
if (has_domain) {
exit = Local<Function>::Cast(domain->Get(exit_symbol));
assert(!exit.IsEmpty());
exit->Call(domain, 0, NULL);
if (try_catch.HasCaught()) {
FatalException(try_catch);
return Undefined();
}
}
if (tick_infobox.length == 0) {
tick_infobox.index = 0;
tick_infobox.depth = 0;
return ret;
}
// process nextTicks after call
process_tickCallback->Call(process, 0, NULL);
if (try_catch.HasCaught()) {
FatalException(try_catch);
return Undefined();
}
return ret;
}
Handle<Value>
MakeCallback(const Handle<Object> object,
const Handle<Function> callback,
int argc,
Handle<Value> argv[]) {
// TODO Hook for long stack traces to be made here.
// lazy load no domain next tick callbacks
if (process_tickCallback.IsEmpty()) {
Local<Value> cb_v = process->Get(String::New("_tickCallback"));
if (!cb_v->IsFunction()) {
fprintf(stderr, "process._tickCallback assigned to non-function\n");
abort();
}
Local<Function> cb = cb_v.As<Function>();
process_tickCallback = Persistent<Function>::New(cb);
}
TryCatch try_catch;
Local<Value> ret = callback->Call(object, argc, argv);
if (try_catch.HasCaught()) {
FatalException(try_catch);
return Undefined();
}
if (tick_infobox.length == 0) {
tick_infobox.index = 0;
tick_infobox.depth = 0;
return ret;
}
// process nextTicks after call
process_tickCallback->Call(process, 0, NULL);
if (try_catch.HasCaught()) {
FatalException(try_catch);
return Undefined();
}
return ret;
}
Handle<Value>
MakeCallback(const Handle<Object> object,
const Handle<String> symbol,
int argc,
Handle<Value> argv[]) {
HandleScope scope;
Local<Function> callback = object->Get(symbol).As<Function>();
if (using_domains)
return scope.Close(MakeDomainCallback(object, callback, argc, argv));
return scope.Close(MakeCallback(object, callback, argc, argv));
}
Handle<Value>
MakeCallback(const Handle<Object> object,
const char* method,
int argc,
Handle<Value> argv[]) {
HandleScope scope;
Handle<Value> ret =
MakeCallback(object, String::NewSymbol(method), argc, argv);
return scope.Close(ret);
}
void SetErrno(uv_err_t err) {
HandleScope scope;
static Persistent<String> errno_symbol;
if (errno_symbol.IsEmpty()) {
errno_symbol = NODE_PSYMBOL("_errno");
}
if (err.code == UV_UNKNOWN) {
char errno_buf[100];
snprintf(errno_buf, 100, "Unknown system errno %d", err.sys_errno_);
process->Set(errno_symbol, String::New(errno_buf));
} else {
process->Set(errno_symbol, String::NewSymbol(uv_err_name(err)));
}
}
enum encoding ParseEncoding(Handle<Value> encoding_v, enum encoding _default) {
HandleScope scope;
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) {
HandleScope scope;
if (encoding == BUFFER) {
return scope.Close(
Buffer::New(static_cast<const char*>(buf), len)->handle_);
}
if (!len) return scope.Close(String::Empty());
if (encoding == BINARY) {
const unsigned char *cbuf = static_cast<const unsigned char*>(buf);
uint16_t * twobytebuf = new uint16_t[len];
for (size_t i = 0; i < len; i++) {
// XXX is the following line platform independent?
twobytebuf[i] = cbuf[i];
}
Local<String> chunk = String::New(twobytebuf, len);
delete [] twobytebuf; // TODO use ExternalTwoByteString?
return scope.Close(chunk);
}
// utf8 or ascii encoding
Local<String> chunk = String::New((const char*)buf, len);
return scope.Close(chunk);
}
// Returns -1 if the handle was not valid for decoding
ssize_t DecodeBytes(v8::Handle<v8::Value> val, enum encoding encoding) {
HandleScope scope;
if (val->IsArray()) {
fprintf(stderr, "'raw' encoding (array of integers) has been removed. "
"Use 'binary'.\n");
assert(0);
return -1;
}
if ((encoding == BUFFER || encoding == BINARY) && Buffer::HasInstance(val)) {
return Buffer::Length(val->ToObject());
}
Local<String> str = val->ToString();
if (encoding == UTF8) return str->Utf8Length();
else if (encoding == UCS2) return str->Length() * 2;
else if (encoding == HEX) return str->Length() / 2;
return str->Length();
}
#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) {
HandleScope scope;
// XXX
// A lot of improvement can be made here. See:
// http://code.google.com/p/v8/issues/detail?id=270
// http://groups.google.com/group/v8-dev/browse_thread/thread/dba28a81d9215291/ece2b50a3b4022c
// http://groups.google.com/group/v8-users/browse_thread/thread/1f83b0ba1f0a611
if (val->IsArray()) {
fprintf(stderr, "'raw' encoding (array of integers) has been removed. "
"Use 'binary'.\n");
assert(0);
return -1;
}
bool is_buffer = Buffer::HasInstance(val);
if (is_buffer && (encoding == BINARY || encoding == BUFFER)) {
// fast path, copy buffer data
const char* data = Buffer::Data(val.As<Object>());
size_t size = Buffer::Length(val.As<Object>());
size_t len = size < buflen ? size : buflen;
memcpy(buf, data, len);
return len;
}
Local<String> str;
if (is_buffer) { // slow path, convert to binary string
Local<Value> arg = String::New("binary");
str = MakeCallback(val.As<Object>(), "toString", 1, &arg)->ToString();
}
else {
str = val->ToString();
}
if (encoding == UTF8) {
str->WriteUtf8(buf, buflen, NULL, String::HINT_MANY_WRITES_EXPECTED);
return buflen;
}
if (encoding == ASCII) {
str->WriteAscii(buf, 0, buflen, String::HINT_MANY_WRITES_EXPECTED);
return buflen;
}
// THIS IS AWFUL!!! FIXME
assert(encoding == BINARY);
uint16_t * twobytebuf = new uint16_t[buflen];
str->Write(twobytebuf, 0, buflen, String::HINT_MANY_WRITES_EXPECTED);
for (size_t i = 0; i < buflen; i++) {
unsigned char *b = reinterpret_cast<unsigned char*>(&twobytebuf[i]);
buf[i] = b[0];
}
delete [] twobytebuf;
return buflen;
}
void DisplayExceptionLine (TryCatch &try_catch) {
// 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;
HandleScope scope;
Handle<Message> message = try_catch.Message();
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, "---\nsourceline:%s\noffset:%d\nstart:%d\nend:%d\n---\n", sourceline_string, start, end);
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(TryCatch &try_catch, bool show_line) {
HandleScope scope;
if (show_line) DisplayExceptionLine(try_catch);
String::Utf8Value trace(try_catch.StackTrace());
// range errors have a trace member set to undefined
if (trace.length() > 0 && !try_catch.StackTrace()->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> er = try_catch.Exception();
bool isErrorObject = er->IsObject() &&
!(er->ToObject()->Get(String::New("message"))->IsUndefined()) &&
!(er->ToObject()->Get(String::New("name"))->IsUndefined());
if (isErrorObject) {
String::Utf8Value name(er->ToObject()->Get(String::New("name")));
fprintf(stderr, "%s: ", *name);
}
String::Utf8Value msg(!isErrorObject ? er
: er->ToObject()->Get(String::New("message")));
fprintf(stderr, "%s\n", *msg);
}
fflush(stderr);
}
// Executes a str within the current v8 context.
Local<Value> ExecuteString(Handle<String> source, Handle<Value> filename) {
HandleScope scope;
TryCatch try_catch;
Local<v8::Script> script = v8::Script::Compile(source, filename);
if (script.IsEmpty()) {
ReportException(try_catch, true);
exit(3);
}
Local<Value> result = script->Run();
if (result.IsEmpty()) {
ReportException(try_catch, true);
exit(4);
}
return scope.Close(result);
}
static Handle<Value> GetActiveRequests(const Arguments& args) {
HandleScope scope;
Local<Array> ary = Array::New();
ngx_queue_t* q = NULL;
int i = 0;
ngx_queue_foreach(q, &req_wrap_queue) {
ReqWrap<uv_req_t>* w = container_of(q, ReqWrap<uv_req_t>, req_wrap_queue_);
if (w->object_.IsEmpty()) continue;
ary->Set(i++, w->object_);
}
return scope.Close(ary);
}
// Non-static, friend of HandleWrap. Could have been a HandleWrap method but
// implemented here for consistency with GetActiveRequests().
Handle<Value> GetActiveHandles(const Arguments& args) {
HandleScope scope;
Local<Array> ary = Array::New();
ngx_queue_t* q = NULL;
int i = 0;
Local<String> owner_sym = String::New("owner");
ngx_queue_foreach(q, &handle_wrap_queue) {
HandleWrap* w = container_of(q, HandleWrap, handle_wrap_queue_);
if (w->object_.IsEmpty() || (w->flags_ & HandleWrap::kUnref)) continue;
Local<Value> obj = w->object_->Get(owner_sym);
if (obj->IsUndefined()) obj = *w->object_;
ary->Set(i++, obj);
}
return scope.Close(ary);
}
static Handle<Value> Abort(const Arguments& args) {
abort();
return Undefined();
}
static Handle<Value> Chdir(const Arguments& args) {
HandleScope scope;
if (args.Length() != 1 || !args[0]->IsString()) {
return ThrowException(Exception::Error(String::New("Bad argument.")));
}
String::Utf8Value path(args[0]);
uv_err_t r = uv_chdir(*path);
if (r.code != UV_OK) {
return ThrowException(UVException(r.code, "uv_chdir"));
}
return Undefined();
}
static Handle<Value> Cwd(const Arguments& args) {
HandleScope scope;
#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
uv_err_t r = uv_cwd(buf, ARRAY_SIZE(buf) - 1);
if (r.code != UV_OK) {
return ThrowException(UVException(r.code, "uv_cwd"));
}
buf[ARRAY_SIZE(buf) - 1] = '\0';
Local<String> cwd = String::New(buf);
return scope.Close(cwd);
}
static Handle<Value> Umask(const Arguments& args) {
HandleScope scope;
unsigned int old;
if (args.Length() < 1 || args[0]->IsUndefined()) {
old = umask(0);
umask((mode_t)old);
} else if(!args[0]->IsInt32() && !args[0]->IsString()) {
return ThrowException(Exception::TypeError(
String::New("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 ThrowException(Exception::TypeError(
String::New("invalid octal string")));
}
oct *= 8;
oct += c - '0';
}
}
old = umask(static_cast<mode_t>(oct));
}
return scope.Close(Uint32::New(old));
}
#ifdef __POSIX__
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 Handle<Value> GetUid(const Arguments& args) {
HandleScope scope;
int uid = getuid();
return scope.Close(Integer::New(uid));
}
static Handle<Value> GetGid(const Arguments& args) {
HandleScope scope;
int gid = getgid();
return scope.Close(Integer::New(gid));
}
static Handle<Value> SetGid(const Arguments& args) {
HandleScope scope;
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 ThrowException(ErrnoException(errno, "setgid"));
}
return Undefined();
}
static Handle<Value> SetUid(const Arguments& args) {
HandleScope scope;
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 ThrowException(ErrnoException(errno, "setuid"));
}
return Undefined();
}
static Handle<Value> GetGroups(const Arguments& args) {
HandleScope scope;
int ngroups = getgroups(0, NULL);
if (ngroups == -1) {
return ThrowException(ErrnoException(errno, "getgroups"));
}
gid_t* groups = new gid_t[ngroups];
ngroups = getgroups(ngroups, groups);
if (ngroups == -1) {
delete[] groups;
return ThrowException(ErrnoException(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]));
if (groups[i] == egid) seen_egid = true;
}
delete[] groups;
if (seen_egid == false) {
groups_list->Set(ngroups, Integer::New(egid));
}
return scope.Close(groups_list);
}
static Handle<Value> SetGroups(const Arguments& args) {
HandleScope scope;
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 ThrowException(ErrnoException(errno, "setgroups"));
}
return Undefined();
}
static Handle<Value> InitGroups(const Arguments& args) {
HandleScope scope;
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 ThrowException(ErrnoException(errno, "initgroups"));
}
return Undefined();
}
#endif // __POSIX__
v8::Handle<v8::Value> Exit(const v8::Arguments& args) {
HandleScope scope;
exit(args[0]->IntegerValue());
return Undefined();
}
static Handle<Value> Uptime(const Arguments& args) {
HandleScope scope;
double uptime;
uv_err_t err = uv_uptime(&uptime);
if (err.code != UV_OK) {
return Undefined();
}
return scope.Close(Number::New(uptime - prog_start_time));
}
v8::Handle<v8::Value> MemoryUsage(const v8::Arguments& args) {
HandleScope scope;
size_t rss;
uv_err_t err = uv_resident_set_memory(&rss);
if (err.code != UV_OK) {
return ThrowException(UVException(err.code, "uv_resident_set_memory"));
}
Local<Object> info = Object::New();
if (rss_symbol.IsEmpty()) {
rss_symbol = NODE_PSYMBOL("rss");
heap_total_symbol = NODE_PSYMBOL("heapTotal");
heap_used_symbol = NODE_PSYMBOL("heapUsed");
}
info->Set(rss_symbol, Number::New(rss));
// V8 memory usage
HeapStatistics v8_heap_stats;
V8::GetHeapStatistics(&v8_heap_stats);
info->Set(heap_total_symbol,
Integer::NewFromUnsigned(v8_heap_stats.total_heap_size()));
info->Set(heap_used_symbol,
Integer::NewFromUnsigned(v8_heap_stats.used_heap_size()));
return scope.Close(info);
}
Handle<Value> Kill(const Arguments& args) {
HandleScope scope;
if (args.Length() != 2) {
return ThrowException(Exception::Error(String::New("Bad argument.")));
}
int pid = args[0]->IntegerValue();
int sig = args[1]->Int32Value();
uv_err_t err = uv_kill(pid, sig);
if (err.code != UV_OK) {
SetErrno(err);
return scope.Close(Integer::New(-1));
}
return Undefined();
}
// 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.
Handle<Value> Hrtime(const v8::Arguments& args) {
HandleScope scope;
uint64_t t = uv_hrtime();
if (args.Length() > 0) {
// return a time diff tuple
if (!args[0]->IsArray()) {
Local<Value> exception = Exception::TypeError(
String::New("process.hrtime() only accepts an Array tuple."));
return ThrowException(exception);
}
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));
tuple->Set(1, Integer::NewFromUnsigned(t % NANOS_PER_SEC));
return scope.Close(tuple);
}
typedef void (UV_DYNAMIC* extInit)(Handle<Object> exports);
// DLOpen is process.dlopen(module, filename).
// Used to load 'module.node' dynamically shared objects.
Handle<Value> DLOpen(const v8::Arguments& args) {
HandleScope scope;
char symbol[1024], *base, *pos;
uv_lib_t lib;
int r;
if (args.Length() < 2) {
Local<Value> exception = Exception::Error(
String::New("process.dlopen takes exactly 2 arguments."));
return ThrowException(exception);
}
Local<Object> module = args[0]->ToObject(); // Cast
String::Utf8Value filename(args[1]); // Cast
if (exports_symbol.IsEmpty()) {
exports_symbol = NODE_PSYMBOL("exports");
}
Local<Object> exports = module->Get(exports_symbol)->ToObject();
if (uv_dlopen(*filename, &lib)) {
Local<String> errmsg = String::New(uv_dlerror(&lib));
#ifdef _WIN32
// Windows needs to add the filename into the error message
errmsg = String::Concat(errmsg, args[1]->ToString());
#endif
return ThrowException(Exception::Error(errmsg));
}
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
/* 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) {
Local<Value> exception =
Exception::Error(String::New("Out of memory."));
return ThrowException(exception);
}
/* 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
mod->register_func(exports, module);
// Tell coverity that 'handle' should not be freed when we return.
// coverity[leaked_storage]
return Undefined();
}
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);
}
exit(5);
}
void FatalException(TryCatch &try_catch) {
HandleScope scope;
if (fatal_exception_symbol.IsEmpty())
fatal_exception_symbol = NODE_PSYMBOL("_fatalException");
Local<Value> fatal_v = process->Get(fatal_exception_symbol);
if (!fatal_v->IsFunction()) {
// failed before the process._fatalException function was added!
// this is probably pretty bad. Nothing to do but report and exit.
ReportException(try_catch, true);
exit(6);
}
Local<Function> fatal_f = Local<Function>::Cast(fatal_v);
Local<Value> error = try_catch.Exception();
Local<Value> argv[] = { error };
TryCatch fatal_try_catch;
// this will return true if the JS layer handled it, false otherwise
Local<Value> caught = fatal_f->Call(process, ARRAY_SIZE(argv), argv);
if (fatal_try_catch.HasCaught()) {
// the fatal exception function threw, so we must exit
ReportException(fatal_try_catch, true);
exit(7);
}
if (false == caught->BooleanValue()) {
ReportException(try_catch, true);
exit(8);
}
}
Persistent<Object> binding_cache;
Persistent<Array> module_load_list;
static Handle<Value> Binding(const Arguments& args) {
HandleScope scope;
Local<String> module = args[0]->ToString();
String::Utf8Value module_v(module);
node_module_struct* modp;
if (binding_cache.IsEmpty()) {
binding_cache = Persistent<Object>::New(Object::New());
}
Local<Object> exports;
if (binding_cache->Has(module)) {
exports = binding_cache->Get(module)->ToObject();
return scope.Close(exports);
}
// Append a string to process.moduleLoadList
char buf[1024];
snprintf(buf, 1024, "Binding %s", *module_v);
uint32_t l = module_load_list->Length();
module_load_list->Set(l, String::New(buf));
if ((modp = get_builtin_module(*module_v)) != NULL) {
exports = Object::New();
// Internal bindings don't have a "module" object,
// only exports.
modp->register_func(exports, Undefined());
binding_cache->Set(module, exports);
} else if (!strcmp(*module_v, "constants")) {
exports = Object::New();
DefineConstants(exports);
binding_cache->Set(module, exports);
} else if (!strcmp(*module_v, "natives")) {
exports = Object::New();
DefineJavaScript(exports);
binding_cache->Set(module, exports);
} else {
return ThrowException(Exception::Error(String::New("No such module")));
}
return scope.Close(exports);
}
static Handle<Value> ProcessTitleGetter(Local<String> property,
const AccessorInfo& info) {
HandleScope scope;
char buffer[512];
uv_get_process_title(buffer, sizeof(buffer));
return scope.Close(String::New(buffer));
}
static void ProcessTitleSetter(Local<String> property,
Local<Value> value,
const AccessorInfo& info) {
HandleScope scope;
String::Utf8Value title(value);
// TODO: protect with a lock
uv_set_process_title(*title);
}
static Handle<Value> EnvGetter(Local<String> property,
const AccessorInfo& info) {
HandleScope scope;
#ifdef __POSIX__
String::Utf8Value key(property);
const char* val = getenv(*key);
if (val) {
return scope.Close(String::New(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)) {
return scope.Close(String::New(reinterpret_cast<uint16_t*>(buffer), result));
}
#endif
// Not found. Fetch from prototype.
return scope.Close(info.Data().As<Object>()->Get(property));
}
static Handle<Value> EnvSetter(Local<String> property,
Local<Value> value,
const AccessorInfo& info) {
HandleScope scope;
#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.
return scope.Close(value);
}
static Handle<Integer> EnvQuery(Local<String> property,
const AccessorInfo& info) {
HandleScope scope;
#ifdef __POSIX__
String::Utf8Value key(property);
if (getenv(*key)) {
return scope.Close(Integer::New(0));
}
#else // _WIN32
String::Value key(property);
WCHAR* key_ptr = reinterpret_cast<WCHAR*>(*key);
if (GetEnvironmentVariableW(key_ptr, NULL, 0) > 0 ||
GetLastError() == ERROR_SUCCESS) {
if (key_ptr[0] == L'=') {
// Environment variables that start with '=' are hidden and read-only.
return scope.Close(Integer::New(v8::ReadOnly ||
v8::DontDelete ||
v8::DontEnum));
} else {
return scope.Close(Integer::New(0));
}
}
#endif
// Not found
return scope.Close(Handle<Integer>());
}
static Handle<Boolean> EnvDeleter(Local<String> property,
const AccessorInfo& info) {
HandleScope scope;
#ifdef __POSIX__
String::Utf8Value key(property);
if (!getenv(*key)) return False();
unsetenv(*key); // can't check return value, it's void on some platforms
return True();
#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.
bool rv = GetEnvironmentVariableW(key_ptr, NULL, NULL) == 0 &&
GetLastError() != ERROR_SUCCESS;
return scope.Close(Boolean::New(rv));
}
return True();
#endif
}
static Handle<Array> EnvEnumerator(const AccessorInfo& info) {
HandleScope scope;
#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);
env->Set(i, String::New(var, length));
}
#else // _WIN32
WCHAR* environment = GetEnvironmentStringsW();
if (environment == NULL) {
// This should not happen.
return scope.Close(Handle<Array>());
}
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);
}
env->Set(i++, String::New(reinterpret_cast<uint16_t*>(p), s - p));
p = s + wcslen(s) + 1;
}
FreeEnvironmentStringsW(environment);
#endif
return scope.Close(env);
}
static Handle<Object> GetFeatures() {
HandleScope scope;
Local<Object> obj = Object::New();
obj->Set(String::NewSymbol("debug"),
#if defined(DEBUG) && DEBUG
True()
#else
False()
#endif
);
obj->Set(String::NewSymbol("uv"), True());
obj->Set(String::NewSymbol("ipv6"), True()); // TODO ping libuv
obj->Set(String::NewSymbol("tls_npn"), Boolean::New(use_npn));
obj->Set(String::NewSymbol("tls_sni"), Boolean::New(use_sni));
obj->Set(String::NewSymbol("tls"),
Boolean::New(get_builtin_module("crypto") != NULL));
return scope.Close(obj);
}
static Handle<Value> DebugPortGetter(Local<String> property,
const AccessorInfo& info) {
HandleScope scope;
return scope.Close(Integer::NewFromUnsigned(debug_port));
}
static void DebugPortSetter(Local<String> property,
Local<Value> value,
const AccessorInfo& info) {
HandleScope scope;
debug_port = value->NumberValue();
}
static Handle<Value> DebugProcess(const Arguments& args);
static Handle<Value> DebugPause(const Arguments& args);
static Handle<Value> DebugEnd(const Arguments& args);
Handle<Value> NeedImmediateCallbackGetter(Local<String> property,
const AccessorInfo& info) {
return Boolean::New(need_immediate_cb);
}
static void NeedImmediateCallbackSetter(Local<String> property,
Local<Value> value,
const AccessorInfo& info) {
HandleScope scope;
bool bool_value = value->BooleanValue();
if (need_immediate_cb == bool_value) return;
need_immediate_cb = bool_value;
if (need_immediate_cb) {
uv_check_start(&check_immediate_watcher, node::CheckImmediate);
// idle handle is needed only to maintain event loop
uv_idle_start(&idle_immediate_dummy, node::IdleImmediateDummy);
} else {
uv_check_stop(&check_immediate_watcher);
uv_idle_stop(&idle_immediate_dummy);
}
}
Handle<Object> SetupProcessObject(int argc, char *argv[]) {
HandleScope scope;
int i, j;
Local<FunctionTemplate> process_template = FunctionTemplate::New();
process_template->SetClassName(String::NewSymbol("process"));
process = Persistent<Object>::New(process_template->GetFunction()->NewInstance());
process->SetAccessor(String::New("title"),
ProcessTitleGetter,
ProcessTitleSetter);
// process.version
process->Set(String::NewSymbol("version"), String::New(NODE_VERSION));
// process.moduleLoadList
module_load_list = Persistent<Array>::New(Array::New());
process->Set(String::NewSymbol("moduleLoadList"), module_load_list);
// process.versions
Local<Object> versions = Object::New();
process->Set(String::NewSymbol("versions"), versions);
versions->Set(String::NewSymbol("http_parser"), String::New(
NODE_STRINGIFY(HTTP_PARSER_VERSION_MAJOR) "."
NODE_STRINGIFY(HTTP_PARSER_VERSION_MINOR)));
// +1 to get rid of the leading 'v'
versions->Set(String::NewSymbol("node"), String::New(NODE_VERSION+1));
versions->Set(String::NewSymbol("v8"), String::New(V8::GetVersion()));
versions->Set(String::NewSymbol("ares"), String::New(ARES_VERSION_STR));
versions->Set(String::NewSymbol("uv"), String::New(uv_version_string()));
versions->Set(String::NewSymbol("zlib"), String::New(ZLIB_VERSION));
versions->Set(String::NewSymbol("modules"),
String::New(NODE_STRINGIFY(NODE_MODULE_VERSION)));
#if HAVE_OPENSSL
// Stupid code to slice out the version string.
int c, l = strlen(OPENSSL_VERSION_TEXT);
for (i = j = 0; i < l; i++) {
c = OPENSSL_VERSION_TEXT[i];
if ('0' <= c && c <= '9') {
for (j = i + 1; j < l; j++) {
c = OPENSSL_VERSION_TEXT[j];
if (c == ' ') break;
}
break;
}
}
versions->Set(String::NewSymbol("openssl"),
String::New(OPENSSL_VERSION_TEXT + i, j - i));
#endif
// process.arch
process->Set(String::NewSymbol("arch"), String::New(ARCH));
// process.platform
process->Set(String::NewSymbol("platform"), String::New(PLATFORM));
// process.argv
Local<Array> arguments = Array::New(argc - option_end_index + 1);
arguments->Set(Integer::New(0), String::New(argv[0]));
for (j = 1, i = option_end_index; i < argc; j++, i++) {
Local<String> arg = String::New(argv[i]);
arguments->Set(Integer::New(j), arg);
}
// assign it
process->Set(String::NewSymbol("argv"), arguments);
// process.execArgv
Local<Array> execArgv = Array::New(option_end_index - 1);
for (j = 1, i = 0; j < option_end_index; j++, i++) {
execArgv->Set(Integer::New(i), String::New(argv[j]));
}
// assign it
process->Set(String::NewSymbol("execArgv"), execArgv);
// create process.env
Local<ObjectTemplate> envTemplate = ObjectTemplate::New();
envTemplate->SetNamedPropertyHandler(EnvGetter,
EnvSetter,
EnvQuery,
EnvDeleter,
EnvEnumerator,
Object::New());
Local<Object> env = envTemplate->NewInstance();
process->Set(String::NewSymbol("env"), env);
process->Set(String::NewSymbol("pid"), Integer::New(getpid()));
process->Set(String::NewSymbol("features"), GetFeatures());
process->SetAccessor(String::New("_needImmediateCallback"),
NeedImmediateCallbackGetter,
NeedImmediateCallbackSetter);
// -e, --eval
if (eval_string) {
process->Set(String::NewSymbol("_eval"), String::New(eval_string));
}
// -p, --print
if (print_eval) {
process->Set(String::NewSymbol("_print_eval"), True());
}
// -i, --interactive
if (force_repl) {
process->Set(String::NewSymbol("_forceRepl"), True());
}
// --no-deprecation
if (no_deprecation) {
process->Set(String::NewSymbol("noDeprecation"), True());
}
// --throw-deprecation
if (throw_deprecation) {
process->Set(String::NewSymbol("throwDeprecation"), True());
}
// --trace-deprecation
if (trace_deprecation) {
process->Set(String::NewSymbol("traceDeprecation"), True());
}
size_t size = 2*PATH_MAX;
char* execPath = new char[size];
if (uv_exepath(execPath, &size) != 0) {
// as a last ditch effort, fallback on argv[0] ?
process->Set(String::NewSymbol("execPath"), String::New(argv[0]));
} else {
process->Set(String::NewSymbol("execPath"), String::New(execPath, size));
}
delete [] execPath;
process->SetAccessor(String::New("debugPort"),
DebugPortGetter,
DebugPortSetter);
// define various internal methods
NODE_SET_METHOD(process, "_getActiveRequests", GetActiveRequests);
NODE_SET_METHOD(process, "_getActiveHandles", GetActiveHandles);
NODE_SET_METHOD(process, "_needTickCallback", NeedTickCallback);
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);
#ifdef __POSIX__
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__
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, "_usingDomains", UsingDomains);
// values use to cross communicate with processNextTick
Local<Object> info_box = Object::New();
info_box->SetIndexedPropertiesToExternalArrayData(&tick_infobox,
kExternalUnsignedIntArray,
3);
process->Set(String::NewSymbol("_tickInfoBox"), info_box);
// pre-set _events object for faster emit checks
process->Set(String::NewSymbol("_events"), Object::New());
return process;
}
static void AtExit() {
uv_tty_reset_mode();
}
static void SignalExit(int signal) {
uv_tty_reset_mode();
_exit(128 + signal);
}
void Load(Handle<Object> process_l) {
process_symbol = NODE_PSYMBOL("process");
domain_symbol = NODE_PSYMBOL("domain");
// 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;
Local<Value> f_value = ExecuteString(MainSource(),
IMMUTABLE_STRING("node.js"));
if (try_catch.HasCaught()) {
ReportException(try_catch, true);
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 = v8::Context::GetCurrent()->Global();
Local<Value> args[1] = { Local<Value>::New(process_l) };
#if defined HAVE_DTRACE || defined HAVE_ETW || defined HAVE_SYSTEMTAP
InitDTrace(global);
#endif
#if defined HAVE_PERFCTR
InitPerfCounters(global);
#endif
f->Call(global, 1, args);
if (try_catch.HasCaught()) {
FatalException(try_catch);
}
}
static void PrintHelp();
static void ParseDebugOpt(const char* arg) {
const char *p = 0;
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 node command line arguments.
static void ParseArgs(int argc, char **argv) {
int i;
// TODO use parse opts
for (i = 1; i < argc; i++) {
const char *arg = argv[i];
if (strstr(arg, "--debug") == arg) {
ParseDebugOpt(arg);
argv[i] = const_cast<char*>("");
} else if (strcmp(arg, "--version") == 0 || strcmp(arg, "-v") == 0) {
printf("%s\n", NODE_VERSION);
exit(0);
} else if (strstr(arg, "--max-stack-size=") == arg) {
const char *p = 0;
p = 1 + strchr(arg, '=');
max_stack_size = atoi(p);
argv[i] = const_cast<char*>("");
} 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;
// argument to -p and --print is optional
if (is_eval == true && i + 1 >= argc) {
fprintf(stderr, "Error: %s requires an argument\n", arg);
exit(13);
}
print_eval = print_eval || is_print;
argv[i] = const_cast<char*>("");
// --eval, -e and -pe always require an argument
if (is_eval == true) {
eval_string = argv[++i];
continue;
}
// next arg is the expression to evaluate unless it starts with:
// - a dash, then it's another switch
// - "\\-", then it's an escaped expression, drop the backslash
if (argv[i + 1] == NULL) continue;
if (argv[i + 1][0] == '-') continue;
eval_string = argv[++i];
if (strncmp(eval_string, "\\-", 2) == 0) ++eval_string;
} else if (strcmp(arg, "--interactive") == 0 || strcmp(arg, "-i") == 0) {
force_repl = true;
argv[i] = const_cast<char*>("");
} else if (strcmp(arg, "--v8-options") == 0) {
argv[i] = const_cast<char*>("--help");
} else if (strcmp(arg, "--no-deprecation") == 0) {
argv[i] = const_cast<char*>("");
no_deprecation = true;
} else if (strcmp(arg, "--trace-deprecation") == 0) {
argv[i] = const_cast<char*>("");
trace_deprecation = true;
} else if (strcmp(arg, "--throw-deprecation") == 0) {
argv[i] = const_cast<char*>("");
throw_deprecation = true;
} else if (argv[i][0] != '-') {
break;
}
}
option_end_index = i;
}
// Called from the main thread.
static void DispatchDebugMessagesAsyncCallback(uv_async_t* handle, int status) {
v8::Debug::ProcessDebugMessages();
}
// Called from V8 Debug Agent TCP thread.
static void DispatchMessagesDebugAgentCallback() {
uv_async_send(&dispatch_debug_messages_async);
}
static void EnableDebug(bool wait_connect) {
// If we're called from another thread, make sure to enter the right
// v8 isolate.
node_isolate->Enter();
v8::Debug::SetDebugMessageDispatchHandler(DispatchMessagesDebugAgentCallback,
false);
uv_async_init(uv_default_loop(),
&dispatch_debug_messages_async,
DispatchDebugMessagesAsyncCallback);
uv_unref((uv_handle_t*) &dispatch_debug_messages_async);
// Start the debug thread and it's associated TCP server on port 5858.
bool r = v8::Debug::EnableAgent("node " NODE_VERSION,
debug_port,
wait_connect);
// Crappy check that everything went well. FIXME
assert(r);
// Print out some information.
fprintf(stderr, "debugger listening on port %d\n", debug_port);
fflush(stderr);
debugger_running = true;
node_isolate->Exit();
}
#ifdef __POSIX__
static void EnableDebugSignalHandler(uv_signal_t* handle, int) {
// Break once process will return execution to v8
v8::Debug::DebugBreak(node_isolate);
if (!debugger_running) {
fprintf(stderr, "Hit SIGUSR1 - starting debugger agent.\n");
EnableDebug(false);
}
}
static void RegisterSignalHandler(int signal, void (*handler)(int)) {
struct sigaction sa;
memset(&sa, 0, sizeof(sa));
sa.sa_handler = handler;
sigfillset(&sa.sa_mask);
sigaction(signal, &sa, NULL);
}
Handle<Value> DebugProcess(const Arguments& args) {
HandleScope scope;
if (args.Length() != 1) {
return ThrowException(Exception::Error(
String::New("Invalid number of arguments.")));
}
pid_t pid;
int r;
pid = args[0]->IntegerValue();
r = kill(pid, SIGUSR1);
if (r != 0) {
return ThrowException(ErrnoException(errno, "kill"));
}
return Undefined();
}
#endif // __POSIX__
#ifdef _WIN32
DWORD WINAPI EnableDebugThreadProc(void* arg) {
// Break once process will return execution to v8
if (!debugger_running) {
for (int i = 0; i < 1; i++) {
fprintf(stderr, "Starting debugger agent.\r\n");
fflush(stderr);
EnableDebug(false);
}
}
v8::Debug::DebugBreak();
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((void*) handler);
return 0;
}
static Handle<Value> DebugProcess(const Arguments& args) {
HandleScope scope;
Handle<Value> rv = Undefined();
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) {
rv = ThrowException(Exception::Error(String::New("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) {
rv = ThrowException(WinapiErrnoException(GetLastError(), "OpenProcess"));
goto out;
}
if (GetDebugSignalHandlerMappingName(pid,
mapping_name,
ARRAY_SIZE(mapping_name)) < 0) {
rv = ThrowException(ErrnoException(errno, "sprintf"));
goto out;
}
mapping = OpenFileMappingW(FILE_MAP_READ, FALSE, mapping_name);
if (mapping == NULL) {
rv = 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) {
rv = ThrowException(WinapiErrnoException(GetLastError(), "MapViewOfFile"));
goto out;
}
thread = CreateRemoteThread(process,
NULL,
0,
*handler,
NULL,
0,
NULL);
if (thread == NULL) {
rv = ThrowException(WinapiErrnoException(GetLastError(),
"CreateRemoteThread"));
goto out;
}
// Wait for the thread to terminate
if (WaitForSingleObject(thread, INFINITE) != WAIT_OBJECT_0) {
rv = 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);
}
return Undefined();
}
#endif // _WIN32
static Handle<Value> DebugPause(const Arguments& args) {
v8::Debug::DebugBreak(node_isolate);
return Undefined();
}
static Handle<Value> DebugEnd(const Arguments& args) {
if (debugger_running) {
v8::Debug::DisableAgent();
debugger_running = false;
}
return Undefined();
}
char** Init(int argc, char *argv[]) {
// Initialize prog_start_time to get relative uptime.
uv_uptime(&prog_start_time);
// Make inherited handles noninheritable.
uv_disable_stdio_inheritance();
// Parse a few arguments which are specific to Node.
node::ParseArgs(argc, argv);
// Parse the rest of the args (up to the 'option_end_index' (where '--' was
// in the command line))
int v8argc = option_end_index;
char **v8argv = argv;
if (debug_wait_connect) {
// v8argv is a copy of argv up to the script file argument +2 if --debug-brk
// to expose the v8 debugger js object so that node.js can set
// a breakpoint on the first line of the startup script
v8argc += 2;
v8argv = new char*[v8argc];
memcpy(v8argv, argv, sizeof(*argv) * option_end_index);
v8argv[option_end_index] = const_cast<char*>("--expose_debug_as");
v8argv[option_end_index + 1] = const_cast<char*>("v8debug");
}
// For the normal stack which moves from high to low addresses when frames
// are pushed, we can compute the limit as stack_size bytes below the
// the address of a stack variable (e.g. &stack_var) as an approximation
// of the start of the stack (we're assuming that we haven't pushed a lot
// of frames yet).
if (max_stack_size != 0) {
uint32_t stack_var;
ResourceConstraints constraints;
uint32_t *stack_limit = &stack_var - (max_stack_size / sizeof(uint32_t));
constraints.set_stack_limit(stack_limit);
SetResourceConstraints(&constraints); // Must be done before V8::Initialize
}
V8::SetFlagsFromCommandLine(&v8argc, v8argv, false);
#ifdef __POSIX__
// Ignore SIGPIPE
RegisterSignalHandler(SIGPIPE, SIG_IGN);
RegisterSignalHandler(SIGINT, SignalExit);
RegisterSignalHandler(SIGTERM, SignalExit);
#endif // __POSIX__
uv_idle_init(uv_default_loop(), &tick_spinner);
uv_check_init(uv_default_loop(), &check_immediate_watcher);
uv_unref((uv_handle_t*) &check_immediate_watcher);
uv_idle_init(uv_default_loop(), &idle_immediate_dummy);
V8::SetFatalErrorHandler(node::OnFatalError);
// 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();
// If the --debug flag was specified then initialize the debug thread.
if (use_debug_agent) {
EnableDebug(debug_wait_connect);
} else {
#ifdef _WIN32
RegisterDebugSignalHandler();
#else // Posix
static uv_signal_t signal_watcher;
uv_signal_init(uv_default_loop(), &signal_watcher);
uv_signal_start(&signal_watcher, EnableDebugSignalHandler, SIGUSR1);
uv_unref((uv_handle_t*)&signal_watcher);
#endif // __POSIX__
}
return argv;
}
struct AtExitCallback {
AtExitCallback* next_;
void (*cb_)(void* arg);
void* arg_;
};
static AtExitCallback* at_exit_functions_;
void RunAtExit() {
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(v8::Handle<v8::Object> process_l) {
// process.emit('exit')
process_l->Set(String::NewSymbol("_exiting"), True());
Local<Value> emit_v = process_l->Get(String::New("emit"));
assert(emit_v->IsFunction());
Local<Function> emit = Local<Function>::Cast(emit_v);
Local<Value> args[] = { String::New("exit"), Integer::New(0) };
TryCatch try_catch;
emit->Call(process_l, 2, args);
if (try_catch.HasCaught()) {
FatalException(try_catch);
}
}
static char **copy_argv(int argc, char **argv) {
size_t strlen_sum;
char **argv_copy;
char *argv_data;
size_t len;
int i;
strlen_sum = 0;
for(i = 0; i < argc; i++) {
strlen_sum += strlen(argv[i]) + 1;
}
argv_copy = (char **) malloc(sizeof(char *) * (argc + 1) + strlen_sum);
if (!argv_copy) {
return NULL;
}
argv_data = (char *) argv_copy + sizeof(char *) * (argc + 1);
for(i = 0; i < argc; i++) {
argv_copy[i] = argv_data;
len = strlen(argv[i]) + 1;
memcpy(argv_data, argv[i], len);
argv_data += len;
}
argv_copy[argc] = NULL;
return argv_copy;
}
int Start(int argc, char *argv[]) {
// Hack aroung with the argv pointer. Used for process.title = "blah".
argv = uv_setup_args(argc, argv);
// Logic to duplicate argv as Init() modifies arguments
// that are passed into it.
char **argv_copy = copy_argv(argc, argv);
// This needs to run *before* V8::Initialize()
// Use copy here as to not modify the original argv:
Init(argc, argv_copy);
V8::Initialize();
{
Locker locker;
HandleScope handle_scope;
// Create the one and only Context.
Persistent<Context> context = Context::New();
Context::Scope context_scope(context);
// Use original argv, as we're just copying values out of it.
Handle<Object> process_l = SetupProcessObject(argc, argv);
v8_typed_array::AttachBindings(context->Global());
// Create all the objects, load modules, do everything.
// so your next reading stop should be node::Load()!
Load(process_l);
// All our arguments are loaded. We've evaluated all of the scripts. We
// might even have created TCP servers. Now we enter the main eventloop. If
// there are no watchers on the loop (except for the ones that were
// uv_unref'd) then this function exits. As long as there are active
// watchers, it blocks.
uv_run(uv_default_loop(), UV_RUN_DEFAULT);
EmitExit(process_l);
RunAtExit();
#ifndef NDEBUG
context.Dispose();
#endif
}
#ifndef NDEBUG
// Clean up. Not strictly necessary.
V8::Dispose();
#endif // NDEBUG
// Clean up the copy:
free(argv_copy);
return 0;
}
} // namespace node