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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 <handle_wrap.h>
#include <pipe_wrap.h>
#include <string.h>
#include <stdlib.h>
#define UNWRAP \
assert(!args.Holder().IsEmpty()); \
assert(args.Holder()->InternalFieldCount() > 0); \
ProcessWrap* wrap = \
static_cast<ProcessWrap*>(args.Holder()->GetPointerFromInternalField(0)); \
if (!wrap) { \
uv_err_t err; \
err.code = UV_EBADF; \
SetErrno(err); \
return scope.Close(Integer::New(-1)); \
}
namespace node {
using v8::Object;
using v8::Handle;
using v8::Local;
using v8::Persistent;
using v8::Value;
using v8::HandleScope;
using v8::FunctionTemplate;
using v8::String;
using v8::Array;
using v8::Function;
using v8::TryCatch;
using v8::Context;
using v8::Arguments;
using v8::Integer;
using v8::Exception;
using v8::ThrowException;
class ProcessWrap : public HandleWrap {
public:
static void Initialize(Handle<Object> target) {
HandleScope scope;
HandleWrap::Initialize(target);
Local<FunctionTemplate> constructor = FunctionTemplate::New(New);
constructor->InstanceTemplate()->SetInternalFieldCount(1);
constructor->SetClassName(String::NewSymbol("Process"));
NODE_SET_PROTOTYPE_METHOD(constructor, "close", HandleWrap::Close);
NODE_SET_PROTOTYPE_METHOD(constructor, "spawn", Spawn);
NODE_SET_PROTOTYPE_METHOD(constructor, "kill", Kill);
target->Set(String::NewSymbol("Process"), constructor->GetFunction());
}
private:
static Handle<Value> New(const Arguments& args) {
// This constructor should not be exposed to public javascript.
// Therefore we assert that we are not trying to call this as a
// normal function.
assert(args.IsConstructCall());
HandleScope scope;
ProcessWrap *wrap = new ProcessWrap(args.This());
assert(wrap);
return scope.Close(args.This());
}
ProcessWrap(Handle<Object> object) : HandleWrap(object, NULL) { }
~ProcessWrap() { }
static Handle<Value> Spawn(const Arguments& args) {
HandleScope scope;
UNWRAP
Local<Object> js_options = args[0]->ToObject();
uv_process_options2_t options;
memset(&options, 0, sizeof(uv_process_options_t));
options.exit_cb = OnExit;
// options.uid
Local<Value> uid_v = js_options->Get(String::NewSymbol("uid"));
if (uid_v->IsInt32()) {
int32_t uid = uid_v->Int32Value();
if (uid & ~((uv_uid_t) ~0)) {
return ThrowException(Exception::RangeError(
String::New("options.uid is out of range")));
}
options.flags |= UV_PROCESS_SETUID;
options.uid = (uv_uid_t) uid;
} else if (!uid_v->IsUndefined() && !uid_v->IsNull()) {
return ThrowException(Exception::TypeError(
String::New("options.uid should be a number")));
}
// options.gid
Local<Value> gid_v = js_options->Get(String::NewSymbol("gid"));
if (gid_v->IsInt32()) {
int32_t gid = gid_v->Int32Value();
if (gid & ~((uv_gid_t) ~0)) {
return ThrowException(Exception::RangeError(
String::New("options.gid is out of range")));
}
options.flags |= UV_PROCESS_SETGID;
options.gid = (uv_gid_t) gid;
} else if (!gid_v->IsUndefined() && !gid_v->IsNull()) {
return ThrowException(Exception::TypeError(
String::New("options.gid should be a number")));
}
// TODO is this possible to do without mallocing ?
// options.file
Local<Value> file_v = js_options->Get(String::NewSymbol("file"));
String::Utf8Value file(file_v->IsString() ? file_v : Local<Value>());
if (file.length() > 0) {
options.file = *file;
} else {
return ThrowException(Exception::TypeError(String::New("Bad argument")));
}
// options.args
Local<Value> argv_v = js_options->Get(String::NewSymbol("args"));
if (!argv_v.IsEmpty() && argv_v->IsArray()) {
Local<Array> js_argv = Local<Array>::Cast(argv_v);
int argc = js_argv->Length();
// Heap allocate to detect errors. +1 is for NULL.
options.args = new char*[argc + 1];
for (int i = 0; i < argc; i++) {
String::Utf8Value arg(js_argv->Get(i)->ToString());
options.args[i] = strdup(*arg);
}
options.args[argc] = NULL;
}
// options.cwd
Local<Value> cwd_v = js_options->Get(String::NewSymbol("cwd"));
String::Utf8Value cwd(cwd_v->IsString() ? cwd_v : Local<Value>());
if (cwd.length() > 0) {
options.cwd = *cwd;
}
// options.env
Local<Value> env_v = js_options->Get(String::NewSymbol("envPairs"));
if (!env_v.IsEmpty() && env_v->IsArray()) {
Local<Array> env = Local<Array>::Cast(env_v);
int envc = env->Length();
options.env = new char*[envc + 1]; // Heap allocated to detect errors.
for (int i = 0; i < envc; i++) {
String::Utf8Value pair(env->Get(i)->ToString());
options.env[i] = strdup(*pair);
}
options.env[envc] = NULL;
}
// options.stdin_stream
Local<Value> stdin_stream_v = js_options->Get(
String::NewSymbol("stdinStream"));
if (!stdin_stream_v.IsEmpty() && stdin_stream_v->IsObject()) {
PipeWrap* stdin_wrap = PipeWrap::Unwrap(stdin_stream_v->ToObject());
options.stdin_stream = stdin_wrap->UVHandle();
}
// options.stdout_stream
Local<Value> stdout_stream_v = js_options->Get(
String::NewSymbol("stdoutStream"));
if (!stdout_stream_v.IsEmpty() && stdout_stream_v->IsObject()) {
PipeWrap* stdout_wrap = PipeWrap::Unwrap(stdout_stream_v->ToObject());
options.stdout_stream = stdout_wrap->UVHandle();
}
// options.stderr_stream
Local<Value> stderr_stream_v = js_options->Get(
String::NewSymbol("stderrStream"));
if (!stderr_stream_v.IsEmpty() && stderr_stream_v->IsObject()) {
PipeWrap* stderr_wrap = PipeWrap::Unwrap(stderr_stream_v->ToObject());
options.stderr_stream = stderr_wrap->UVHandle();
}
// options.windows_verbatim_arguments
if (js_options->Get(String::NewSymbol("windowsVerbatimArguments"))->
IsTrue()) {
options.flags |= UV_PROCESS_WINDOWS_VERBATIM_ARGUMENTS;
}
int r = uv_spawn2(uv_default_loop(), &wrap->process_, options);
if (r) {
SetErrno(uv_last_error(uv_default_loop()));
}
else {
wrap->SetHandle((uv_handle_t*)&wrap->process_);
assert(wrap->process_.data == wrap);
wrap->object_->Set(String::New("pid"), Integer::New(wrap->process_.pid));
}
if (options.args) {
for (int i = 0; options.args[i]; i++) free(options.args[i]);
delete [] options.args;
}
if (options.env) {
for (int i = 0; options.env[i]; i++) free(options.env[i]);
delete [] options.env;
}
return scope.Close(Integer::New(r));
}
static Handle<Value> Kill(const Arguments& args) {
HandleScope scope;
UNWRAP
int signal = args[0]->Int32Value();
int r = uv_process_kill(&wrap->process_, signal);
if (r) SetErrno(uv_last_error(uv_default_loop()));
return scope.Close(Integer::New(r));
}
static void OnExit(uv_process_t* handle, int exit_status, int term_signal) {
HandleScope scope;
ProcessWrap* wrap = static_cast<ProcessWrap*>(handle->data);
assert(wrap);
assert(&wrap->process_ == handle);
Local<Value> argv[2] = {
Integer::New(exit_status),
String::New(signo_string(term_signal))
};
MakeCallback(wrap->object_, "onexit", 2, argv);
}
uv_process_t process_;
};
} // namespace node
NODE_MODULE(node_process_wrap, node::ProcessWrap::Initialize)
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