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main_repo / src / process_wrap.cc @ 31c510ca
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// Copyright Joyent, Inc. and other Node contributors.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to permit
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// persons to whom the Software is furnished to do so, subject to the
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// following conditions:
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//
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// The above copyright notice and this permission notice shall be included
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// in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
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// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
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// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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// USE OR OTHER DEALINGS IN THE SOFTWARE.
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#include "node.h" |
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#include "handle_wrap.h" |
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#include "pipe_wrap.h" |
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#include "tty_wrap.h" |
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#include "tcp_wrap.h" |
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#include "udp_wrap.h" |
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#include <string.h> |
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#include <stdlib.h> |
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namespace node {
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using v8::Object;
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using v8::Handle;
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using v8::Local;
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using v8::Persistent;
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using v8::Value;
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using v8::HandleScope;
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using v8::FunctionTemplate;
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using v8::String;
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using v8::Array;
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using v8::Number;
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using v8::Function;
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using v8::TryCatch;
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using v8::Context;
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using v8::Arguments;
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using v8::Integer;
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using v8::Exception;
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using v8::ThrowException;
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static Persistent<String> onexit_sym;
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class ProcessWrap : public HandleWrap { |
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public:
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static void Initialize(Handle<Object> target) { |
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HandleScope scope; |
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HandleWrap::Initialize(target); |
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Local<FunctionTemplate> constructor = FunctionTemplate::New(New); |
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constructor->InstanceTemplate()->SetInternalFieldCount(1);
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constructor->SetClassName(String::NewSymbol("Process"));
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NODE_SET_PROTOTYPE_METHOD(constructor, "close", HandleWrap::Close);
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NODE_SET_PROTOTYPE_METHOD(constructor, "spawn", Spawn);
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NODE_SET_PROTOTYPE_METHOD(constructor, "kill", Kill);
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NODE_SET_PROTOTYPE_METHOD(constructor, "ref", HandleWrap::Ref);
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NODE_SET_PROTOTYPE_METHOD(constructor, "unref", HandleWrap::Unref);
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target->Set(String::NewSymbol("Process"), constructor->GetFunction());
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} |
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private:
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static Handle<Value> New(const Arguments& args) { |
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// This constructor should not be exposed to public javascript.
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// Therefore we assert that we are not trying to call this as a
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// normal function.
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assert(args.IsConstructCall()); |
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HandleScope scope; |
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ProcessWrap *wrap = new ProcessWrap(args.This());
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assert(wrap); |
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return scope.Close(args.This());
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} |
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ProcessWrap(Handle<Object> object) : HandleWrap(object, NULL) { }
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~ProcessWrap() { } |
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static void ParseStdioOptions(Local<Object> js_options, |
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uv_process_options_t* options) { |
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Local<Array> stdios = js_options |
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->Get(String::NewSymbol("stdio")).As<Array>();
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int len = stdios->Length();
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options->stdio = new uv_stdio_container_t[len];
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options->stdio_count = len; |
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for (int i = 0; i < len; i++) { |
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Local<Object> stdio = stdios |
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->Get(Number::New(static_cast<double>(i))).As<Object>(); |
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Local<Value> type = stdio->Get(String::NewSymbol("type"));
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if (type->Equals(String::NewSymbol("ignore"))) { |
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options->stdio[i].flags = UV_IGNORE; |
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} else if (type->Equals(String::NewSymbol("pipe"))) { |
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options->stdio[i].flags = static_cast<uv_stdio_flags>(
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UV_CREATE_PIPE | UV_READABLE_PIPE | UV_WRITABLE_PIPE); |
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options->stdio[i].data.stream = reinterpret_cast<uv_stream_t*>(
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PipeWrap::Unwrap(stdio |
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->Get(String::NewSymbol("handle")).As<Object>())->UVHandle());
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} else if (type->Equals(String::NewSymbol("wrap"))) { |
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uv_stream_t* stream = NULL;
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Local<Value> wrapType = stdio->Get(String::NewSymbol("wrapType"));
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if (wrapType->Equals(String::NewSymbol("pipe"))) { |
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stream = reinterpret_cast<uv_stream_t*>(PipeWrap::Unwrap(stdio
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->Get(String::NewSymbol("handle")).As<Object>())->UVHandle());
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} else if (wrapType->Equals(String::NewSymbol("tty"))) { |
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stream = reinterpret_cast<uv_stream_t*>(TTYWrap::Unwrap(stdio
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->Get(String::NewSymbol("handle")).As<Object>())->UVHandle());
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} else if (wrapType->Equals(String::NewSymbol("tcp"))) { |
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stream = reinterpret_cast<uv_stream_t*>(TCPWrap::Unwrap(stdio
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->Get(String::NewSymbol("handle")).As<Object>())->UVHandle());
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} else if (wrapType->Equals(String::NewSymbol("udp"))) { |
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stream = reinterpret_cast<uv_stream_t*>(UDPWrap::Unwrap(stdio
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->Get(String::NewSymbol("handle")).As<Object>())->UVHandle());
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} |
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assert(stream != NULL);
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options->stdio[i].flags = UV_INHERIT_STREAM; |
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options->stdio[i].data.stream = stream; |
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} else {
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int fd = static_cast<int>( |
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stdio->Get(String::NewSymbol("fd"))->IntegerValue());
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options->stdio[i].flags = UV_INHERIT_FD; |
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options->stdio[i].data.fd = fd; |
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} |
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} |
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} |
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static Handle<Value> Spawn(const Arguments& args) { |
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HandleScope scope; |
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UNWRAP(ProcessWrap) |
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Local<Object> js_options = args[0]->ToObject();
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uv_process_options_t options; |
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memset(&options, 0, sizeof(uv_process_options_t)); |
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options.exit_cb = OnExit; |
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// options.uid
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Local<Value> uid_v = js_options->Get(String::NewSymbol("uid"));
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if (uid_v->IsInt32()) {
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int32_t uid = uid_v->Int32Value(); |
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if (uid & ~((uv_uid_t) ~0)) { |
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return ThrowException(Exception::RangeError(
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String::New("options.uid is out of range")));
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} |
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options.flags |= UV_PROCESS_SETUID; |
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options.uid = (uv_uid_t) uid; |
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} else if (!uid_v->IsUndefined() && !uid_v->IsNull()) { |
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return ThrowException(Exception::TypeError(
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String::New("options.uid should be a number")));
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} |
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// options.gid
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Local<Value> gid_v = js_options->Get(String::NewSymbol("gid"));
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if (gid_v->IsInt32()) {
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int32_t gid = gid_v->Int32Value(); |
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if (gid & ~((uv_gid_t) ~0)) { |
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return ThrowException(Exception::RangeError(
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String::New("options.gid is out of range")));
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} |
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options.flags |= UV_PROCESS_SETGID; |
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options.gid = (uv_gid_t) gid; |
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} else if (!gid_v->IsUndefined() && !gid_v->IsNull()) { |
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return ThrowException(Exception::TypeError(
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String::New("options.gid should be a number")));
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} |
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// TODO is this possible to do without mallocing ?
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// options.file
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Local<Value> file_v = js_options->Get(String::NewSymbol("file"));
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String::Utf8Value file(file_v->IsString() ? file_v : Local<Value>()); |
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if (file.length() > 0) { |
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options.file = *file; |
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} else {
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return ThrowException(Exception::TypeError(String::New("Bad argument"))); |
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} |
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// options.args
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Local<Value> argv_v = js_options->Get(String::NewSymbol("args"));
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if (!argv_v.IsEmpty() && argv_v->IsArray()) {
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Local<Array> js_argv = Local<Array>::Cast(argv_v); |
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int argc = js_argv->Length();
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// Heap allocate to detect errors. +1 is for NULL.
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options.args = new char*[argc + 1]; |
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for (int i = 0; i < argc; i++) { |
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String::Utf8Value arg(js_argv->Get(i)); |
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options.args[i] = strdup(*arg); |
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} |
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options.args[argc] = NULL;
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} |
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// options.cwd
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Local<Value> cwd_v = js_options->Get(String::NewSymbol("cwd"));
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String::Utf8Value cwd(cwd_v->IsString() ? cwd_v : Local<Value>()); |
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if (cwd.length() > 0) { |
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options.cwd = *cwd; |
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} |
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// options.env
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Local<Value> env_v = js_options->Get(String::NewSymbol("envPairs"));
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if (!env_v.IsEmpty() && env_v->IsArray()) {
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Local<Array> env = Local<Array>::Cast(env_v); |
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int envc = env->Length();
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options.env = new char*[envc + 1]; // Heap allocated to detect errors. |
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for (int i = 0; i < envc; i++) { |
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String::Utf8Value pair(env->Get(i)); |
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options.env[i] = strdup(*pair); |
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} |
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options.env[envc] = NULL;
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} |
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// options.stdio
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ParseStdioOptions(js_options, &options); |
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// options.windows_verbatim_arguments
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if (js_options->Get(String::NewSymbol("windowsVerbatimArguments"))-> |
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IsTrue()) { |
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options.flags |= UV_PROCESS_WINDOWS_VERBATIM_ARGUMENTS; |
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} |
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//options.detached
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if (js_options->Get(String::NewSymbol("detached"))->IsTrue()) { |
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options.flags |= UV_PROCESS_DETACHED; |
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} |
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int r = uv_spawn(uv_default_loop(), &wrap->process_, options);
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if (r) {
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SetErrno(uv_last_error(uv_default_loop())); |
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} |
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else {
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wrap->SetHandle((uv_handle_t*)&wrap->process_); |
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assert(wrap->process_.data == wrap); |
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wrap->object_->Set(String::New("pid"),
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Integer::New(wrap->process_.pid)); |
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} |
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if (options.args) {
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for (int i = 0; options.args[i]; i++) free(options.args[i]); |
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delete [] options.args;
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} |
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if (options.env) {
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for (int i = 0; options.env[i]; i++) free(options.env[i]); |
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delete [] options.env;
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} |
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delete[] options.stdio;
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return scope.Close(Integer::New(r));
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} |
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static Handle<Value> Kill(const Arguments& args) { |
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HandleScope scope; |
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UNWRAP(ProcessWrap) |
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int signal = args[0]->Int32Value(); |
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int r = uv_process_kill(&wrap->process_, signal);
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if (r) SetErrno(uv_last_error(uv_default_loop()));
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return scope.Close(Integer::New(r));
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} |
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static void OnExit(uv_process_t* handle, int exit_status, int term_signal) { |
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HandleScope scope; |
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ProcessWrap* wrap = static_cast<ProcessWrap*>(handle->data);
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assert(wrap); |
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assert(&wrap->process_ == handle); |
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Local<Value> argv[2] = {
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Integer::New(exit_status), |
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String::New(signo_string(term_signal)) |
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}; |
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if (exit_status == -1) { |
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SetErrno(uv_last_error(uv_default_loop())); |
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} |
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if (onexit_sym.IsEmpty()) {
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onexit_sym = NODE_PSYMBOL("onexit");
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} |
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MakeCallback(wrap->object_, onexit_sym, ARRAY_SIZE(argv), argv); |
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} |
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uv_process_t process_; |
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}; |
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} // namespace node
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NODE_MODULE(node_process_wrap, node::ProcessWrap::Initialize) |