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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 <uv.h>
#include <v8-debug.h>
#ifdef HAVE_DTRACE
# include <node_dtrace.h>
#endif
#include <locale.h>
#include <signal.h>
#include <stdio.h>
#if defined(_MSC_VER)
#define snprintf _snprintf
#endif
#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>
#if defined(__MINGW32__) || defined(_MSC_VER)
# include <platform_win32.h> /* winapi_perror() */
#endif
#ifdef __POSIX__
# include <pwd.h> /* getpwnam() */
# include <grp.h> /* getgrnam() */
#endif
#include "platform.h"
#include <node_buffer.h>
#ifdef __POSIX__
# include <node_io_watcher.h>
#endif
#include <node_file.h>
#include <node_http_parser.h>
#ifdef __POSIX__
# include <node_signal_watcher.h>
# include <node_stat_watcher.h>
#endif
#include <node_constants.h>
#include <node_javascript.h>
#include <node_version.h>
#include <node_string.h>
#if HAVE_OPENSSL
# include <node_crypto.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 {
static Persistent<Object> process;
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> listeners_symbol;
static Persistent<String> uncaught_exception_symbol;
static Persistent<String> emit_symbol;
static bool print_eval = 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 uv_check_t check_tick_watcher;
static uv_prepare_t prepare_tick_watcher;
static uv_idle_t tick_spinner;
static bool need_tick_cb;
static Persistent<String> tick_callback_sym;
#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
#ifdef __POSIX__
// Buffer for getpwnam_r(), getgrpam_r() and other misc callers; keep this
// scoped at file-level rather than method-level to avoid excess stack usage.
static char getbuf[PATH_MAX + 1];
#endif
// We need to notify V8 when we're idle so that it can run the garbage
// collector. The interface to this is V8::IdleNotification(). It returns
// true if the heap hasn't be fully compacted, and needs to be run again.
// Returning false means that it doesn't have anymore work to do.
//
// A rather convoluted algorithm has been devised to determine when Node is
// idle. You'll have to figure it out for yourself.
static uv_check_t gc_check;
static uv_idle_t gc_idle;
static uv_timer_t gc_timer;
bool need_gc;
#define FAST_TICK 700.
#define GC_WAIT_TIME 5000.
#define RPM_SAMPLES 100
#define TICK_TIME(n) tick_times[(tick_time_head - (n)) % RPM_SAMPLES]
static int64_t tick_times[RPM_SAMPLES];
static int tick_time_head;
static void CheckStatus(uv_timer_t* watcher, int status);
static void StartGCTimer () {
if (!uv_is_active((uv_handle_t*) &gc_timer)) {
uv_timer_start(&gc_timer, node::CheckStatus, 5000, 5000);
}
}
static void StopGCTimer () {
if (uv_is_active((uv_handle_t*) &gc_timer)) {
uv_timer_stop(&gc_timer);
}
}
static void Idle(uv_idle_t* watcher, int status) {
assert((uv_idle_t*) watcher == &gc_idle);
if (V8::IdleNotification()) {
uv_idle_stop(&gc_idle);
StopGCTimer();
}
}
// Called directly after every call to select() (or epoll, or whatever)
static void Check(uv_check_t* watcher, int status) {
assert(watcher == &gc_check);
tick_times[tick_time_head] = uv_now(uv_default_loop());
tick_time_head = (tick_time_head + 1) % RPM_SAMPLES;
StartGCTimer();
for (int i = 0; i < (int)(GC_WAIT_TIME/FAST_TICK); i++) {
double d = TICK_TIME(i+1) - TICK_TIME(i+2);
//printf("d = %f\n", d);
// If in the last 5 ticks the difference between
// ticks was less than 0.7 seconds, then continue.
if (d < FAST_TICK) {
//printf("---\n");
return;
}
}
// Otherwise start the gc!
//fprintf(stderr, "start idle 2\n");
uv_idle_start(&gc_idle, node::Idle);
}
static void Tick(void) {
// Avoid entering a V8 scope.
if (!need_tick_cb) return;
need_tick_cb = false;
if (uv_is_active((uv_handle_t*) &tick_spinner)) {
uv_idle_stop(&tick_spinner);
uv_unref(uv_default_loop());
}
HandleScope scope;
if (tick_callback_sym.IsEmpty()) {
// Lazily set the symbol
tick_callback_sym =
Persistent<String>::New(String::NewSymbol("_tickCallback"));
}
Local<Value> cb_v = process->Get(tick_callback_sym);
if (!cb_v->IsFunction()) return;
Local<Function> cb = Local<Function>::Cast(cb_v);
TryCatch try_catch;
cb->Call(process, 0, NULL);
if (try_catch.HasCaught()) {
FatalException(try_catch);
}
}
static void Spin(uv_idle_t* handle, int status) {
assert((uv_idle_t*) handle == &tick_spinner);
assert(status == 0);
Tick();
}
static Handle<Value> NeedTickCallback(const Arguments& args) {
HandleScope scope;
need_tick_cb = true;
// TODO: this tick_spinner shouldn't be necessary. An ev_prepare should be
// sufficent, the problem is only in the case of the very last "tick" -
// there is nothing left to do in the event loop and libev will exit. The
// ev_prepare callback isn't called before exiting. Thus we start this
// tick_spinner to keep the event loop alive long enough to handle it.
if (!uv_is_active((uv_handle_t*) &tick_spinner)) {
uv_idle_start(&tick_spinner, Spin);
uv_ref(uv_default_loop());
}
return Undefined();
}
static void PrepareTick(uv_prepare_t* handle, int status) {
assert(handle == &prepare_tick_watcher);
assert(status == 0);
Tick();
}
static void CheckTick(uv_check_t* handle, int status) {
assert(handle == &check_tick_watcher);
assert(status == 0);
Tick();
}
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 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
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;
const int argc = args.Length();
Local<Value>* argv = new Local<Value>[argc];
for (int i = 0; i < argc; ++i) {
argv[i] = args[i];
}
Local<Object> instance = t->GetFunction()->NewInstance(argc, argv);
delete[] argv;
return scope.Close(instance);
}
// MakeCallback may only be made directly off the event loop.
// That is there can be no JavaScript stack frames underneath it.
// (Is there any way to assert that?)
//
// Maybe make this a method of a node::Handle super class
//
void MakeCallback(Handle<Object> object,
const char* method,
int argc,
Handle<Value> argv[]) {
HandleScope scope;
Local<Value> callback_v = object->Get(String::New(method));
if (!callback_v->IsFunction()) {
fprintf(stderr, "method = %s", method);
}
assert(callback_v->IsFunction());
Local<Function> callback = Local<Function>::Cast(callback_v);
// TODO Hook for long stack traces to be made here.
TryCatch try_catch;
callback->Call(object, argc, argv);
if (try_catch.HasCaught()) {
FatalException(try_catch);
}
}
void SetErrno(uv_err_t err) {
HandleScope scope;
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_);
Context::GetCurrent()->Global()->Set(errno_symbol, String::New(errno_buf));
} else {
Context::GetCurrent()->Global()->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->ToString());
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, "binary") == 0) {
return BINARY;
} else if (strcasecmp(*encoding, "hex") == 0) {
return HEX;
} else if (strcasecmp(*encoding, "raw") == 0) {
fprintf(stderr, "'raw' (array of integers) has been removed. "
"Use 'binary'.\n");
return BINARY;
} else if (strcasecmp(*encoding, "raws") == 0) {
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 (!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;
}
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;
}
Local<String> 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) {
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;
// HACK HACK HACK
//
// FIXME
//
// Because of how CommonJS modules work, all scripts are wrapped with a
// "function (function (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. This HACK is to remove it. The length
// of the wrapper is 62. That wrapper is defined in src/node.js
//
// If that wrapper is ever changed, then this number also has to be
// updated. Or - someone could clean this up so that the two peices
// don't need to be changed.
//
// Even better would be to get support into V8 for wrappers that
// shouldn't be reported to users.
int offset = linenum == 1 ? 62 : 0;
fprintf(stderr, "%s\n", sourceline_string + offset);
// Print wavy underline (GetUnderline is deprecated).
int start = message->GetStartColumn();
for (int i = offset; i < start; i++) {
fprintf(stderr, " ");
}
int end = message->GetEndColumn();
for (int i = start; i < end; i++) {
fprintf(stderr, "^");
}
fprintf(stderr, "\n");
}
}
static void ReportException(TryCatch &try_catch, bool show_line) {
HandleScope scope;
Handle<Message> message = try_catch.Message();
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->ToString()
: er->ToObject()->Get(String::New("message"))->ToString());
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(1);
}
Local<Value> result = script->Run();
if (result.IsEmpty()) {
ReportException(try_catch, true);
exit(1);
}
return scope.Close(result);
}
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]->ToString());
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);
}
#ifdef _WIN32
static Handle<Value> CwdForDrive(const Arguments& args) {
HandleScope scope;
if (args.Length() < 1) {
Local<Value> exception = Exception::Error(
String::New("process._cwdForDrive takes exactly 1 argument."));
return ThrowException(exception);
}
Local<String> driveLetter = args[0]->ToString();
if (driveLetter->Length() != 1) {
Local<Value> exception = Exception::Error(
String::New("Drive name should be 1 character."));
return ThrowException(exception);
}
char drive;
driveLetter->WriteAscii(&drive, 0, 1, 0);
if (drive >= 'a' && drive <= 'z') {
// Convert to uppercase
drive += 'A' - 'a';
} else if (drive < 'A' || drive > 'Z') {
// Not a letter
Local<Value> exception = Exception::Error(
String::New("Drive name should be a letter."));
return ThrowException(exception);
}
WCHAR env_key[] = L"=X:";
env_key[1] = (WCHAR) drive;
DWORD len = GetEnvironmentVariableW(env_key, NULL, 0);
if (len == 0 && GetLastError() == ERROR_ENVVAR_NOT_FOUND) {
// There is no current directory for that drive. Default to drive + ":\".
Local<String> cwd = String::Concat(String::New(&drive, 1),
String::New(":\\"));
return scope.Close(cwd);
} else if (len == 0) {
// Error
Local<Value> exception = Exception::Error(
String::New(winapi_strerror(GetLastError())));
return ThrowException(exception);
}
WCHAR* buffer = new WCHAR[len];
if (buffer == NULL) {
Local<Value> exception = Exception::Error(
String::New("Out of memory."));
return ThrowException(exception);
}
DWORD len2 = GetEnvironmentVariableW(env_key, buffer, len);
if (len2 == 0 || len2 >= len) {
// Error
delete[] buffer;
Local<Value> exception = Exception::Error(
String::New(winapi_strerror(GetLastError())));
return ThrowException(exception);
}
Local<String> cwd = String::New(reinterpret_cast<uint16_t*>(buffer), len2);
delete[] buffer;
return scope.Close(cwd);
}
#endif
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 Handle<Value> GetUid(const Arguments& args) {
HandleScope scope;
assert(args.Length() == 0);
int uid = getuid();
return scope.Close(Integer::New(uid));
}
static Handle<Value> GetGid(const Arguments& args) {
HandleScope scope;
assert(args.Length() == 0);
int gid = getgid();
return scope.Close(Integer::New(gid));
}
static Handle<Value> SetGid(const Arguments& args) {
HandleScope scope;
if (args.Length() < 1) {
return ThrowException(Exception::Error(
String::New("setgid requires 1 argument")));
}
int gid;
if (args[0]->IsNumber()) {
gid = args[0]->Int32Value();
} else if (args[0]->IsString()) {
String::Utf8Value grpnam(args[0]->ToString());
struct group grp, *grpp = NULL;
int err;
if ((err = getgrnam_r(*grpnam, &grp, getbuf, ARRAY_SIZE(getbuf), &grpp)) ||
grpp == NULL) {
if (errno == 0)
return ThrowException(Exception::Error(
String::New("setgid group id does not exist")));
else
return ThrowException(ErrnoException(errno, "getgrnam_r"));
}
gid = grpp->gr_gid;
} else {
return ThrowException(Exception::Error(
String::New("setgid argument must be a number or a string")));
}
int result;
if ((result = setgid(gid)) != 0) {
return ThrowException(ErrnoException(errno, "setgid"));
}
return Undefined();
}
static Handle<Value> SetUid(const Arguments& args) {
HandleScope scope;
if (args.Length() < 1) {
return ThrowException(Exception::Error(
String::New("setuid requires 1 argument")));
}
int uid;
if (args[0]->IsNumber()) {
uid = args[0]->Int32Value();
} else if (args[0]->IsString()) {
String::Utf8Value pwnam(args[0]->ToString());
struct passwd pwd, *pwdp = NULL;
int err;
if ((err = getpwnam_r(*pwnam, &pwd, getbuf, ARRAY_SIZE(getbuf), &pwdp)) ||
pwdp == NULL) {
if (errno == 0)
return ThrowException(Exception::Error(
String::New("setuid user id does not exist")));
else
return ThrowException(ErrnoException(errno, "getpwnam_r"));
}
uid = pwdp->pw_uid;
} else {
return ThrowException(Exception::Error(
String::New("setuid argument must be a number or a string")));
}
int result;
if ((result = setuid(uid)) != 0) {
return ThrowException(ErrnoException(errno, "setuid"));
}
return Undefined();
}
#endif // __POSIX__
v8::Handle<v8::Value> Exit(const v8::Arguments& args) {
HandleScope scope;
exit(args[0]->IntegerValue());
return Undefined();
}
static void CheckStatus(uv_timer_t* watcher, int status) {
assert(watcher == &gc_timer);
// check memory
if (!uv_is_active((uv_handle_t*) &gc_idle)) {
HeapStatistics stats;
V8::GetHeapStatistics(&stats);
if (stats.total_heap_size() > 1024 * 1024 * 128) {
// larger than 128 megs, just start the idle watcher
uv_idle_start(&gc_idle, node::Idle);
return;
}
}
double d = uv_now(uv_default_loop()) - TICK_TIME(3);
//printfb("timer d = %f\n", d);
if (d >= GC_WAIT_TIME - 1.) {
//fprintf(stderr, "start idle\n");
uv_idle_start(&gc_idle, node::Idle);
}
}
static Handle<Value> Uptime(const Arguments& args) {
HandleScope scope;
assert(args.Length() == 0);
double uptime = Platform::GetUptime(true);
if (uptime < 0) {
return Undefined();
}
return scope.Close(Number::New(uptime));
}
v8::Handle<v8::Value> UVCounters(const v8::Arguments& args) {
HandleScope scope;
uv_counters_t* c = &uv_default_loop()->counters;
Local<Object> obj = Object::New();
#define setc(name) \
obj->Set(String::New(#name), Integer::New(static_cast<int32_t>(c->name)));
setc(eio_init)
setc(req_init)
setc(handle_init)
setc(stream_init)
setc(tcp_init)
setc(udp_init)
setc(pipe_init)
setc(tty_init)
setc(prepare_init)
setc(check_init)
setc(idle_init)
setc(async_init)
setc(timer_init)
setc(process_init)
setc(fs_event_init)
#undef setc
return scope.Close(obj);
}
v8::Handle<v8::Value> MemoryUsage(const v8::Arguments& args) {
HandleScope scope;
assert(args.Length() == 0);
size_t rss;
int r = Platform::GetMemory(&rss);
if (r != 0) {
return ThrowException(Exception::Error(String::New(strerror(errno))));
}
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();
}
typedef void (UV_DYNAMIC* extInit)(Handle<Object> exports);
// DLOpen is node.dlopen(). 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;
node_module_struct compat_mod;
uv_err_t err;
int r;
if (args.Length() < 2) {
Local<Value> exception = Exception::Error(
String::New("process.dlopen takes exactly 2 arguments."));
return ThrowException(exception);
}
String::Utf8Value filename(args[0]->ToString()); // Cast
Local<Object> target = args[1]->ToObject(); // Cast
err = uv_dlopen(*filename, &lib);
if (err.code != UV_OK) {
Local<Value> exception = Exception::Error(
String::Concat(String::New("Unable to load shared library "),
args[0]->ToString()));
return ThrowException(exception);
}
String::Utf8Value path(args[0]->ToString());
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 || r >= sizeof symbol) {
Local<Value> exception =
Exception::Error(String::New("Out of memory."));
return ThrowException(exception);
}
// Get the init() function from the dynamically shared object.
node_module_struct *mod;
err = uv_dlsym(lib, symbol, reinterpret_cast<void**>(&mod));
if (err.code != UV_OK) {
/* Start Compatibility hack: Remove once everyone is using NODE_MODULE macro */
memset(&compat_mod, 0, sizeof compat_mod);
mod = &compat_mod;
mod->version = NODE_MODULE_VERSION;
err = uv_dlsym(lib, "init", reinterpret_cast<void**>(&mod->register_func));
if (err.code != UV_OK) {
uv_dlclose(lib);
const char* message;
if (err.code == UV_ENOENT)
message = "Module entry point not found.";
else
message = "Out of memory.";
return ThrowException(Exception::Error(String::New(message)));
}
/* End Compatibility hack */
}
if (mod->version != NODE_MODULE_VERSION) {
Local<Value> exception = Exception::Error(
String::New("Module version mismatch, refusing to load."));
return ThrowException(exception);
}
// Execute the C++ module
mod->register_func(target);
// 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(1);
}
static int uncaught_exception_counter = 0;
void FatalException(TryCatch &try_catch) {
HandleScope scope;
// Check if uncaught_exception_counter indicates a recursion
if (uncaught_exception_counter > 0) {
ReportException(try_catch, true);
exit(1);
}
if (listeners_symbol.IsEmpty()) {
listeners_symbol = NODE_PSYMBOL("listeners");
uncaught_exception_symbol = NODE_PSYMBOL("uncaughtException");
emit_symbol = NODE_PSYMBOL("emit");
}
Local<Value> listeners_v = process->Get(listeners_symbol);
assert(listeners_v->IsFunction());
Local<Function> listeners = Local<Function>::Cast(listeners_v);
Local<String> uncaught_exception_symbol_l = Local<String>::New(uncaught_exception_symbol);
Local<Value> argv[1] = { uncaught_exception_symbol_l };
Local<Value> ret = listeners->Call(process, 1, argv);
assert(ret->IsArray());
Local<Array> listener_array = Local<Array>::Cast(ret);
uint32_t length = listener_array->Length();
// Report and exit if process has no "uncaughtException" listener
if (length == 0) {
ReportException(try_catch, true);
exit(1);
}
// Otherwise fire the process "uncaughtException" event
Local<Value> emit_v = process->Get(emit_symbol);
assert(emit_v->IsFunction());
Local<Function> emit = Local<Function>::Cast(emit_v);
Local<Value> error = try_catch.Exception();
Local<Value> event_argv[2] = { uncaught_exception_symbol_l, error };
uncaught_exception_counter++;
emit->Call(process, 2, event_argv);
// Decrement so we know if the next exception is a recursion or not
uncaught_exception_counter--;
}
static uv_async_t debug_watcher;
static void DebugMessageCallback(uv_async_t* watcher, int status) {
HandleScope scope;
assert(watcher == &debug_watcher);
Debug::ProcessDebugMessages();
}
static void DebugMessageDispatch(void) {
// This function is called from V8's debug thread when a debug TCP client
// has sent a message.
// Send a signal to our main thread saying that it should enter V8 to
// handle the message.
uv_async_send(&debug_watcher);
}
static void DebugBreakMessageHandler(const Debug::Message& message) {
// do nothing with debug messages.
// The message handler will get changed by DebuggerAgent::CreateSession in
// debug-agent.cc of v8/src when a new session is created
}
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();
modp->register_func(exports);
binding_cache->Set(module, exports);
} else if (!strcmp(*module_v, "constants")) {
exports = Object::New();
DefineConstants(exports);
binding_cache->Set(module, exports);
#ifdef __POSIX__
} else if (!strcmp(*module_v, "io_watcher")) {
exports = Object::New();
IOWatcher::Initialize(exports);
binding_cache->Set(module, exports);
#endif
} 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;
int len;
const char *s = Platform::GetProcessTitle(&len);
return scope.Close(s ? String::New(s, len) : String::Empty());
}
static void ProcessTitleSetter(Local<String> property,
Local<Value> value,
const AccessorInfo& info) {
HandleScope scope;
String::Utf8Value title(value->ToString());
Platform::SetProcessTitle(*title);
}
static Handle<Value> EnvGetter(Local<String> property,
const AccessorInfo& info) {
String::Utf8Value key(property);
const char* val = getenv(*key);
if (val) {
HandleScope scope;
return scope.Close(String::New(val));
}
return Undefined();
}
static Handle<Value> EnvSetter(Local<String> property,
Local<Value> value,
const AccessorInfo& info) {
HandleScope scope;
String::Utf8Value key(property);
String::Utf8Value val(value);
#ifdef __POSIX__
setenv(*key, *val, 1);
#else // __WIN32__
int n = key.length() + val.length() + 2;
char* pair = new char[n];
snprintf(pair, n, "%s=%s", *key, *val);
int r = _putenv(pair);
if (r) {
fprintf(stderr, "error putenv: '%s'\n", pair);
}
delete [] pair;
#endif
return value;
}
static Handle<Integer> EnvQuery(Local<String> property,
const AccessorInfo& info) {
String::Utf8Value key(property);
if (getenv(*key)) {
HandleScope scope;
return scope.Close(Integer::New(None));
}
return Handle<Integer>();
}
static Handle<Boolean> EnvDeleter(Local<String> property,
const AccessorInfo& info) {
HandleScope scope;
String::Utf8Value key(property);
if (getenv(*key)) {
#ifdef __POSIX__
unsetenv(*key); // prototyped as `void unsetenv(const char*)` on some platforms
#else
int n = key.length() + 2;
char* pair = new char[n];
snprintf(pair, n, "%s=", *key);
int r = _putenv(pair);
if (r) {
fprintf(stderr, "error unsetenv: '%s'\n", pair);
}
delete [] pair;
#endif
return True();
}
return False();
}
static Handle<Array> EnvEnumerator(const AccessorInfo& info) {
HandleScope scope;
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));
}
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> DebugProcess(const Arguments& args);
Handle<Object> SetupProcessObject(int argc, char *argv[]) {
HandleScope scope;
int i, j;
Local<FunctionTemplate> process_template = FunctionTemplate::New();
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));
#ifdef NODE_PREFIX
// process.installPrefix
process->Set(String::NewSymbol("installPrefix"), String::New(NODE_PREFIX));
#endif
// process.moduleLoadList
module_load_list = Persistent<Array>::New(Array::New());
process->Set(String::NewSymbol("moduleLoadList"), module_load_list);
Local<Object> versions = Object::New();
char buf[20];
process->Set(String::NewSymbol("versions"), versions);
// +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));
snprintf(buf, 20, "%d.%d", UV_VERSION_MAJOR, UV_VERSION_MINOR);
versions->Set(String::NewSymbol("uv"), String::New(buf));
#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);
// create process.env
Local<ObjectTemplate> envTemplate = ObjectTemplate::New();
envTemplate->SetNamedPropertyHandler(EnvGetter,
EnvSetter,
EnvQuery,
EnvDeleter,
EnvEnumerator,
Undefined());
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());
// -e, --eval
if (eval_string) {
process->Set(String::NewSymbol("_eval"), String::New(eval_string));
process->Set(String::NewSymbol("_print_eval"), Boolean::New(print_eval));
}
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;
// define various internal methods
NODE_SET_METHOD(process, "_needTickCallback", NeedTickCallback);
NODE_SET_METHOD(process, "reallyExit", Exit);
NODE_SET_METHOD(process, "chdir", Chdir);
NODE_SET_METHOD(process, "cwd", Cwd);
#ifdef _WIN32
NODE_SET_METHOD(process, "_cwdForDrive", CwdForDrive);
#endif
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);
#endif // __POSIX__
NODE_SET_METHOD(process, "_kill", Kill);
NODE_SET_METHOD(process, "_debugProcess", DebugProcess);
NODE_SET_METHOD(process, "dlopen", DLOpen);
NODE_SET_METHOD(process, "uptime", Uptime);
NODE_SET_METHOD(process, "memoryUsage", MemoryUsage);
NODE_SET_METHOD(process, "uvCounters", UVCounters);
NODE_SET_METHOD(process, "binding", Binding);
return process;
}
static void AtExit() {
uv_tty_reset_mode();
}
static void SignalExit(int signal) {
uv_tty_reset_mode();
_exit(1);
}
void Load(Handle<Object> process_l) {
// 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) };
#ifdef HAVE_DTRACE
InitDTrace(global);
#endif
f->Call(global, 1, args);
if (try_catch.HasCaught()) {
ReportException(try_catch, true);
exit(11);
}
}
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(1);
}
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 print result of --eval\n"
" --v8-options print v8 command line options\n"
" --vars print various compiled-in variables\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 (strcmp(arg, "--vars") == 0) {
#ifdef NODE_PREFIX
printf("NODE_PREFIX: %s\n", NODE_PREFIX);
#endif
#ifdef NODE_CFLAGS
printf("NODE_CFLAGS: %s\n", NODE_CFLAGS);
#endif
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, "-pe") == 0) {
if (argc <= i + 1) {
fprintf(stderr, "Error: --eval requires an argument\n");
exit(1);
}
if (arg[1] == 'p') {
print_eval = true;
}
argv[i] = const_cast<char*>("");
eval_string = argv[++i];
} else if (strcmp(arg, "--print") == 0 || strcmp(arg, "-p") == 0) {
print_eval = true;
argv[i] = const_cast<char*>("");
} else if (strcmp(arg, "--v8-options") == 0) {
argv[i] = const_cast<char*>("--help");
} else if (argv[i][0] != '-') {
break;
}
}
option_end_index = i;
}
static Isolate* node_isolate = NULL;
static volatile bool debugger_running = false;
static void EnableDebug(bool wait_connect) {
// If we're called from another thread, make sure to enter the right
// v8 isolate.
node_isolate->Enter();
// Start the debug thread and it's associated TCP server on port 5858.
bool r = Debug::EnableAgent("node " NODE_VERSION, debug_port);
if (wait_connect) {
// Set up an empty handler so v8 will not continue until a debugger
// attaches. This is the same behavior as Debug::EnableAgent(_,_,true)
// except we don't break at the beginning of the script.
// see Debugger::StartAgent in debug.cc of v8/src
Debug::SetMessageHandler2(node::DebugBreakMessageHandler);
}
// 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(int signal) {
// 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, char* buf, size_t buf_len) {
return snprintf(buf, buf_len, "node-debug-handler-%u", pid);
}
static int RegisterDebugSignalHandler() {
char mapping_name[32];
HANDLE mapping_handle;
DWORD pid;
LPTHREAD_START_ROUTINE* handler;
pid = GetCurrentProcessId();
if (GetDebugSignalHandlerMappingName(pid,
mapping_name,
sizeof mapping_name) < 0) {
return -1;
}
mapping_handle = CreateFileMappingA(INVALID_HANDLE_VALUE,
NULL,
PAGE_READWRITE,
0,
sizeof *handler,
mapping_name);
if (mapping_handle == NULL) {
return -1;
}
handler = (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_l = NULL;
HANDLE thread = NULL;
HANDLE mapping = NULL;
char 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_l = OpenProcess(PROCESS_CREATE_THREAD | PROCESS_QUERY_INFORMATION |
PROCESS_VM_OPERATION | PROCESS_VM_WRITE |
PROCESS_VM_READ,
FALSE,
pid);
if (process_l == NULL) {
rv = ThrowException(WinapiErrnoException(GetLastError(), "OpenProcess"));
goto out;
}
if (GetDebugSignalHandlerMappingName(pid,
mapping_name,
sizeof mapping_name) < 0) {
rv = ThrowException(ErrnoException(errno, "sprintf"));
goto out;
}
mapping = OpenFileMapping(FILE_MAP_READ, FALSE, mapping_name);
if (mapping == NULL) {
rv = ThrowException(WinapiErrnoException(GetLastError(), "sprintf"));
goto out;
}
handler = (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_l,
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_l != NULL) {
CloseHandle(process_l);
}
if (thread != NULL) {
CloseHandle(thread);
}
if (handler != NULL) {
UnmapViewOfFile(handler);
}
if (mapping != NULL) {
CloseHandle(mapping);
}
return Undefined();
}
#endif // _WIN32
char** Init(int argc, char *argv[]) {
// Hack aroung with the argv pointer. Used for process.title = "blah".
argv = node::Platform::SetupArgs(argc, argv);
// 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_prepare_init(uv_default_loop(), &prepare_tick_watcher);
uv_prepare_start(&prepare_tick_watcher, PrepareTick);
uv_unref(uv_default_loop());
uv_check_init(uv_default_loop(), &check_tick_watcher);
uv_check_start(&check_tick_watcher, node::CheckTick);
uv_unref(uv_default_loop());
uv_idle_init(uv_default_loop(), &tick_spinner);
uv_unref(uv_default_loop());
uv_check_init(uv_default_loop(), &gc_check);
uv_check_start(&gc_check, node::Check);
uv_unref(uv_default_loop());
uv_idle_init(uv_default_loop(), &gc_idle);
uv_unref(uv_default_loop());
uv_timer_init(uv_default_loop(), &gc_timer);
uv_unref(uv_default_loop());
V8::SetFatalErrorHandler(node::OnFatalError);
// Set the callback DebugMessageDispatch which is called from the debug
// thread.
Debug::SetDebugMessageDispatchHandler(node::DebugMessageDispatch);
// Initialize the async watcher. DebugMessageCallback() is called from the
// main thread to execute a random bit of javascript - which will give V8
// control so it can handle whatever new message had been received on the
// debug thread.
uv_async_init(uv_default_loop(), &node::debug_watcher,
node::DebugMessageCallback);
// unref it so that we exit the event loop despite it being active.
uv_unref(uv_default_loop());
// 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
RegisterSignalHandler(SIGUSR1, EnableDebugSignalHandler);
#endif // __POSIX__
}
return argv;
}
void EmitExit(v8::Handle<v8::Object> process_l) {
// process.emit('exit')
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") };
TryCatch try_catch;
emit->Call(process_l, 1, args);
if (try_catch.HasCaught()) {
FatalException(try_catch);
}
}
int Start(int argc, char *argv[]) {
// This needs to run *before* V8::Initialize()
argv = Init(argc, argv);
v8::V8::Initialize();
v8::HandleScope handle_scope;
// Create the one and only Context.
Persistent<v8::Context> context = v8::Context::New();
v8::Context::Scope context_scope(context);
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());
EmitExit(process_l);
#ifndef NDEBUG
// Clean up.
context.Dispose();
V8::Dispose();
#endif // NDEBUG
return 0;
}
} // namespace node
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