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feat(pty): add initial pty node

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This commit is contained in:
Leroy Hopson 2024-02-24 19:47:12 +13:00
parent d223a458cd
commit 1514f42b54
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GPG key ID: D2747312A6DB51AA
21 changed files with 2819 additions and 71 deletions
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9
.github/workflows/main.yml vendored
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@ -167,6 +167,7 @@ jobs:
addons/godot_xterm/native/bin/*.so
addons/godot_xterm/native/bin/*.wasm
addons/godot_xterm/native/bin/*.framework
addons/godot_xterm/native/bin/spawn-helper
addons/godot_xterm/native/bin/*.xcframework
addons/godot_xterm/native/bin/*.dll
@ -238,12 +239,14 @@ jobs:
matrix:
platform: [linux, macos, windows]
bits: [64, 32]
test-type: [headless, rendering]
test-type: [headless, rendering, unix]
exclude:
- platform: macos
bits: 32
- platform: windows
test-type: rendering
- platform: windows
test-type: unix
include:
- platform: linux
os: ubuntu-22.04
@ -299,6 +302,10 @@ jobs:
with:
path: addons/godot_xterm/native/bin
merge-multiple: true
- name: Set spawn-helper file permissions
if: ${{ matrix.platform == 'macos' }}
# File permissions are not preserved by upload-artifact.
run: chmod +x addons/godot_xterm/native/bin/spawn-helper
- name: Test
shell: bash
run: |

3
.gitmodules vendored
View file

@ -7,3 +7,6 @@
[submodule "addons/godot_xterm/native/thirdparty/libtsm"]
path = addons/godot_xterm/native/thirdparty/libtsm
url = https://github.com/Aetf/libtsm
[submodule "addons/godot_xterm/native/thirdparty/node-pty"]
path = addons/godot_xterm/native/thirdparty/node-pty
url = https://github.com/microsoft/node-pty

5
Justfile
View file

@ -12,10 +12,13 @@ install:
{{godot}} --headless -s plug.gd install
test:
{{godot}} --headless -s addons/gut/gut_cmdln.gd -gtest=res://test/test_terminal.gd -gexit
{{godot}} --headless -s addons/gut/gut_cmdln.gd -gtest=res://test/test_terminal.gd,res://test/test_pty.gd -gexit
test-rendering:
{{godot}} --windowed --resolution 400x200 --position 0,0 -s addons/gut/gut_cmdln.gd -gtest=res://test/test_rendering.gd -gopacity=0 -gexit
test-unix:
{{godot}} --headless -s addons/gut/gut_cmdln.gd -gtest=res://test/test_unix.gd -gexit
uninstall:
{{godot}} --headless -s plug.gd uninstall

1
addons/godot_xterm/editor_plugins/terminal/terminal_panel.gd
View file

@ -8,7 +8,6 @@
extends Control
const EditorTerminal := preload("./editor_terminal.tscn")
const PTY := preload("../../pty.gd")
const TerminalSettings := preload("./settings/terminal_settings.gd")
const SETTINGS_FILE_PATH := "res://.gdxterm/settings.tres"

12
addons/godot_xterm/native/SConstruct
View file

@ -15,6 +15,8 @@ env.Append(CPPPATH=[
"thirdparty/libtsm/src/tsm",
"thirdparty/libtsm/external",
"thirdparty/libtsm/src/shared",
'thirdparty/libuv/src',
'thirdparty/libuv/include',
])
sources = Glob("src/*.cpp") + Glob("thirdparty/libtsm/src/tsm/*.c")
@ -23,6 +25,11 @@ sources.append([
'thirdparty/libtsm/src/shared/shl-htable.c',
])
if env['platform'] == 'linux' or env['platform'] == 'macos':
env.Append(LIBS=['util', env.File('thirdparty/libuv/build/libuv_a.a')])
else:
env.Append(CPPDEFINES=['_PTY_DISABLED'])
if env["platform"] == "macos":
library = env.SharedLibrary(
"bin/libgodot-xterm.{}.{}.framework/libgodot-xterm.{}.{}".format(
@ -30,6 +37,11 @@ if env["platform"] == "macos":
),
source=sources,
)
spawn_helper = env.Program(
"bin/spawn-helper",
source="thirdparty/node-pty/src/unix/spawn-helper.cc"
)
Default(spawn_helper)
else:
library = env.SharedLibrary(
"bin/libgodot-xterm{}{}".format(env["suffix"], env["SHLIBSUFFIX"]),

9
addons/godot_xterm/native/bin/.gitignore vendored Normal file
View file

@ -0,0 +1,9 @@
# SPDX-FileCopyrightText: none
# SPDX-License-Identifier: CC0-1.0
*.so
*.wasm
*.dylib
*.framework
*.xcframework
*.dll
spawn-helper

10
addons/godot_xterm/native/build.sh
View file

@ -16,7 +16,7 @@ while [[ $# -gt 0 ]]; do
shift
;;
*)
echo "Usage: ./build.sh [-t|--target <release|debug>]";
echo "Usage: ./build.sh [-t|--target <template_release|template_debug>]";
exit 128
shift
;;
@ -24,8 +24,8 @@ while [[ $# -gt 0 ]]; do
done
# Set defaults.
target=${target:-debug}
if [ "$target" == "debug" ]; then
target=${target:-template_debug}
if [ "$target" == "template_debug" ]; then
debug_symbols="yes"
else
debug_symbols="no"
@ -62,7 +62,7 @@ mkdir build || true
cd build
args="-DCMAKE_BUILD_TYPE=$target -DBUILD_SHARED_LIBS=OFF -DCMAKE_POSITION_INDEPENDENT_CODE=TRUE \
-DCMAKE_OSX_ARCHITECTURES=$(uname -m)"
if [ "$target" == "release" ]; then
if [ "$target" == "template_release" ]; then
args="$args -DCMAKE_MSVC_RUNTIME_LIBRARY=MultiThreadedDLL"
else
args="$args -DCMAKE_MSVC_RUNTIME_LIBRARY=MultiThreadedDebugDLL"
@ -73,7 +73,7 @@ cmake --build build --config $target -j$nproc
# Build libgodot-xterm.
cd ${NATIVE_DIR}
scons target=template_$target arch=$(uname -m) debug_symbols=$debug_symbols
scons target=$target arch=$(uname -m) debug_symbols=$debug_symbols
# Use Docker to build libgodot-xterm javascript.
#if [ -x "$(command -v docker-compose)" ]; then

191
addons/godot_xterm/native/src/pty.cpp Normal file
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@ -0,0 +1,191 @@
#include "pty.h"
#include<godot_cpp/classes/project_settings.hpp>
#include <uv.h>
#if (defined(__linux__) || defined(__APPLE__)) && !defined(_PTY_DISABLED)
#include "pty_unix.h"
#include <unistd.h>
#endif
using namespace godot;
PTY::PTY() {
os = OS::get_singleton();
env["TERM"] = "xterm-256color";
env["COLORTERM"] = "truecolor";
}
PTY::~PTY() {
#if (defined(__linux__) || defined(__APPLE__)) && !defined(_PTY_DISABLED)
if (pid > 0) kill(SIGNAL_SIGHUP);
if (fd > 0) close(fd);
#endif
}
int PTY::get_cols() const {
return cols;
}
int PTY::get_rows() const {
return rows;
}
Dictionary PTY::get_env() const {
return env;
}
void PTY::set_env(const Dictionary &value) {
env = value;
}
bool PTY::get_use_os_env() const {
return use_os_env;
}
void PTY::set_use_os_env(const bool value) {
use_os_env = value;
}
Error PTY::fork(const String &file, const PackedStringArray &args, const String &cwd, const int cols, const int rows) {
String fork_file = _get_fork_file(file);
Dictionary fork_env = _get_fork_env();
Dictionary result;
#if defined(__linux__) || defined(__APPLE__)
String helper_path = ProjectSettings::get_singleton()->globalize_path("res://addons/godot_xterm/native/bin/spawn-helper");
result = PTYUnix::fork(fork_file, args, PackedStringArray(), cwd, cols, rows, -1, -1, true, helper_path, Callable(this, "_on_exit"));
fd = result["fd"];
pid = result["pid"];
#endif
return static_cast<Error>((int)result["error"]);
}
void PTY::kill(const int signal) {
#if (defined(__linux__) || defined(__APPLE__)) && !defined(_PTY_DISABLED)
if (pid > 0) {
uv_kill(pid, signal);
}
#endif
}
Error PTY::open(const int cols, const int rows) const {
Dictionary result;
#if defined(__linux__) || defined(__APPLE__)
result = PTYUnix::open(cols, rows);
#endif
return static_cast<Error>((int)result["error"]);
}
void PTY::resize(const int cols, const int rows) const {
}
void PTY::write(const Variant &data) const {
}
void PTY::_bind_methods() {
BIND_ENUM_CONSTANT(SIGNAL_SIGHUP);
BIND_ENUM_CONSTANT(SIGNAL_SIGINT);
BIND_ENUM_CONSTANT(SIGNAL_SIGQUIT);
BIND_ENUM_CONSTANT(SIGNAL_SIGILL);
BIND_ENUM_CONSTANT(SIGNAL_SIGTRAP);
BIND_ENUM_CONSTANT(SIGNAL_SIGABRT);
BIND_ENUM_CONSTANT(SIGNAL_SIGBUS);
BIND_ENUM_CONSTANT(SIGNAL_SIGFPE);
BIND_ENUM_CONSTANT(SIGNAL_SIGKILL);
BIND_ENUM_CONSTANT(SIGNAL_SIGUSR1);
BIND_ENUM_CONSTANT(SIGNAL_SIGSEGV);
BIND_ENUM_CONSTANT(SIGNAL_SIGUSR2);
BIND_ENUM_CONSTANT(SIGNAL_SIGPIPE);
BIND_ENUM_CONSTANT(SIGNAL_SIGALRM);
BIND_ENUM_CONSTANT(SIGNAL_SIGTERM);
ADD_SIGNAL(MethodInfo("exited", PropertyInfo(Variant::INT, "exit_code"), PropertyInfo(Variant::INT, "signal_code")));
ClassDB::bind_method(D_METHOD("get_env"), &PTY::get_env);
ClassDB::bind_method(D_METHOD("set_env", "env"), &PTY::set_env);
ClassDB::add_property("PTY", PropertyInfo(Variant::DICTIONARY, "env"), "set_env", "get_env");
ClassDB::bind_method(D_METHOD("get_use_os_env"), &PTY::get_use_os_env);
ClassDB::bind_method(D_METHOD("set_use_os_env", "use_os_env"), &PTY::set_use_os_env);
ClassDB::add_property("PTY", PropertyInfo(Variant::BOOL, "use_os_env"), "set_use_os_env", "get_use_os_env");
ClassDB::bind_method(D_METHOD("fork", "file", "args", "cwd", "cols", "rows"), &PTY::fork, DEFVAL(""), DEFVAL(PackedStringArray()), DEFVAL("."), DEFVAL(80), DEFVAL(24));
ClassDB::bind_method(D_METHOD("open", "cols", "rows"), &PTY::open, DEFVAL(80), DEFVAL(24));
ClassDB::bind_method(D_METHOD("write", "data"), &PTY::write);
ClassDB::bind_method(D_METHOD("kill", "signal"), &PTY::kill);
ClassDB::bind_method(D_METHOD("_on_exit", "exit_code", "signal_code"), &PTY::_on_exit);
}
String PTY::_get_fork_file(const String &file) const {
if (!file.is_empty()) return file;
String shell_env = os->get_environment("SHELL");
if (!shell_env.is_empty()) {
return shell_env;
}
#if defined(__linux__)
return "sh";
#endif
#if defined(__APPLE__)
return "zsh";
#endif
#if defined(_WIN32)
return "cmd.exe";
#endif
return "";
}
Dictionary PTY::_get_fork_env() const {
if (!use_os_env) return env;
#if defined(_PTY_DISABLED)
return env;
#endif
Dictionary os_env;
uv_env_item_t *uv_env;
int count;
uv_os_environ(&uv_env, &count);
for (int i = 0; i < count; i++) {
os_env[uv_env[i].name] = uv_env[i].value;
}
uv_os_free_environ(uv_env, count);
// Make sure we didn't start our server from inside tmux.
os_env.erase("TMUX");
os_env.erase("TMUX_PANE");
// Make sure we didn't start our server from inside screen.
// http://web.mit.edu/gnu/doc/html/screen_20.html
os_env.erase("STY");
os_env.erase("WINDOW");
// Delete some variables that might confuse our terminal.
os_env.erase("WINDOWID");
os_env.erase("TERMCAP");
os_env.erase("COLUMNS");
os_env.erase("LINES");
// Merge in our custom environment.
PackedStringArray keys = PackedStringArray(env.keys());
for (int i = 0; i < keys.size(); i++) {
String key = keys[i];
os_env[key] = env[key];
}
return os_env;
}
void PTY::_on_exit(int exit_code, int exit_signal) {
pid = -1;
emit_signal(StringName("exited"), exit_code, exit_signal);
}

74
addons/godot_xterm/native/src/pty.h Normal file
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@ -0,0 +1,74 @@
// SPDX-FileCopyrightText: 2021-2024 Leroy Hopson <godot-xterm@leroy.nix.nz>
// SPDX-License-Identifier: MIT
#pragma once
#include <godot_cpp/classes/node.hpp>
#include <godot_cpp/classes/os.hpp>
namespace godot
{
class PTY : public Node
{
GDCLASS(PTY, Node)
public:
enum Signal {
SIGNAL_SIGHUP = 1,
SIGNAL_SIGINT = 2,
SIGNAL_SIGQUIT = 3,
SIGNAL_SIGILL = 4,
SIGNAL_SIGTRAP = 5,
SIGNAL_SIGABRT = 6,
SIGNAL_SIGBUS = 7,
SIGNAL_SIGFPE = 8,
SIGNAL_SIGKILL = 9,
SIGNAL_SIGUSR1 = 10,
SIGNAL_SIGSEGV = 11,
SIGNAL_SIGUSR2 = 12,
SIGNAL_SIGPIPE = 13,
SIGNAL_SIGALRM = 14,
SIGNAL_SIGTERM = 15,
};
PTY();
~PTY();
int get_cols() const;
int get_rows() const;
Dictionary get_env() const;
void set_env(const Dictionary &value);
bool get_use_os_env() const;
void set_use_os_env(const bool value);
Error fork(const String &file = "", const PackedStringArray &args = PackedStringArray(), const String &cwd = ".", const int cols = 80, const int rows = 24);
void kill(const int signum = Signal::SIGNAL_SIGHUP);
Error open(const int cols = 80, const int rows = 24) const;
void resize(const int cols, const int rows) const;
void resizev(const Vector2i &size) const { resize(size.x, size.y); };
void write(const Variant &data) const;
protected:
static void _bind_methods();
private:
OS *os;
int pid = -1;
int fd = -1;
unsigned int cols = 0;
unsigned int rows = 0;
Dictionary env = Dictionary();
bool use_os_env = true;
String _get_fork_file(const String &file) const;
Dictionary _get_fork_env() const;
void _on_exit(int exit_code, int exit_signal);
};
} // namespace godot
VARIANT_ENUM_CAST(PTY::Signal);

737
addons/godot_xterm/native/src/pty_unix.cpp Normal file
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@ -0,0 +1,737 @@
/**
* Copyright (c) 2012-2015, Christopher Jeffrey (MIT License)
* Copyright (c) 2017, Daniel Imms (MIT License)
* Copyright (c) 2024, Leroy Hopson (MIT License)
*
* SPDX-License-Identifier: MIT
*
* pty.cc:
* This file is responsible for starting processes
* with pseudo-terminal file descriptors.
*
* See:
* man pty
* man tty_ioctl
* man termios
* man forkpty
*/
/**
* Includes
*/
#if (defined(__linux__) || defined(__APPLE__)) && !defined(_PTY_DISABLED)
#include "pty_unix.h"
#include <godot_cpp/classes/thread.hpp>
#include <godot_cpp/variant/callable_method_pointer.hpp>
#include <godot_cpp/variant/dictionary.hpp>
#include <assert.h>
#include <errno.h>
#include <string>
#include <stdlib.h>
#include <unistd.h>
#include <thread>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <sys/wait.h>
#include <fcntl.h>
#include <signal.h>
/* forkpty */
/* http://www.gnu.org/software/gnulib/manual/html_node/forkpty.html */
#if defined(__linux__)
#include <pty.h>
#elif defined(__APPLE__)
#include <util.h>
#elif defined(__FreeBSD__)
#include <libutil.h>
#endif
/* Some platforms name VWERASE and VDISCARD differently */
#if !defined(VWERASE) && defined(VWERSE)
#define VWERASE VWERSE
#endif
#if !defined(VDISCARD) && defined(VDISCRD)
#define VDISCARD VDISCRD
#endif
/* for pty_getproc */
#if defined(__linux__)
#include <stdio.h>
#include <stdint.h>
#elif defined(__APPLE__)
#include <libproc.h>
#include <os/availability.h>
#include <paths.h>
#include <spawn.h>
#include <sys/event.h>
#include <sys/sysctl.h>
#include <termios.h>
#endif
/* NSIG - macro for highest signal + 1, should be defined */
#ifndef NSIG
#define NSIG 32
#endif
/* macOS 10.14 back does not define this constant */
#ifndef POSIX_SPAWN_SETSID
#define POSIX_SPAWN_SETSID 1024
#endif
/* environ for execvpe */
#if !defined(__APPLE__)
extern char **environ;
#endif
#if defined(__APPLE__)
extern "C" {
// Changes the current thread's directory to a path or directory file
// descriptor. libpthread only exposes a syscall wrapper starting in
// macOS 10.12, but the system call dates back to macOS 10.5. On older OSes,
// the syscall is issued directly.
int pthread_chdir_np(const char* dir) API_AVAILABLE(macosx(10.12));
int pthread_fchdir_np(int fd) API_AVAILABLE(macosx(10.12));
}
#define HANDLE_EINTR(x) ({ \
int eintr_wrapper_counter = 0; \
decltype(x) eintr_wrapper_result; \
do { \
eintr_wrapper_result = (x); \
} while (eintr_wrapper_result == -1 && errno == EINTR && \
eintr_wrapper_counter++ < 100); \
eintr_wrapper_result; \
})
#endif
using namespace godot;
static void await_exit(Callable cb, pid_t pid) {
int ret;
int stat_loc;
#if defined(__APPLE__)
// Based on
// https://source.chromium.org/chromium/chromium/src/+/main:base/process/kill_mac.cc;l=35-69?
int kq = HANDLE_EINTR(kqueue());
struct kevent change = {0};
EV_SET(&change, pid, EVFILT_PROC, EV_ADD, NOTE_EXIT, 0, NULL);
ret = HANDLE_EINTR(kevent(kq, &change, 1, NULL, 0, NULL));
if (ret == -1) {
if (errno == ESRCH) {
// At this point, one of the following has occurred:
// 1. The process has died but has not yet been reaped.
// 2. The process has died and has already been reaped.
// 3. The process is in the process of dying. It's no longer
// kqueueable, but it may not be waitable yet either. Mark calls
// this case the "zombie death race".
ret = HANDLE_EINTR(waitpid(pid, &stat_loc, WNOHANG));
if (ret == 0) {
ret = kill(pid, SIGKILL);
if (ret != -1) {
HANDLE_EINTR(waitpid(pid, &stat_loc, 0));
}
}
}
} else {
struct kevent event = {0};
ret = HANDLE_EINTR(kevent(kq, NULL, 0, &event, 1, NULL));
if (ret == 1) {
if ((event.fflags & NOTE_EXIT) &&
(event.ident == static_cast<uintptr_t>(pid))) {
// The process is dead or dying. This won't block for long, if at
// all.
HANDLE_EINTR(waitpid(pid, &stat_loc, 0));
}
}
}
#else
while (true) {
errno = 0;
if ((ret = waitpid(pid, &stat_loc, 0)) != pid) {
if (ret == -1 && errno == EINTR) {
continue;
}
if (ret == -1 && errno == ECHILD) {
// waitpid is already handled elsewhere.
;
} else {
assert(false);
}
}
break;
}
#endif
int exit_code, signal_code = 0;
if (WIFEXITED(stat_loc)) {
exit_code = WEXITSTATUS(stat_loc); // errno?
}
if (WIFSIGNALED(stat_loc)) {
signal_code = WTERMSIG(stat_loc);
}
cb.call_deferred(exit_code, signal_code);
}
static void on_exit(int exit_code, int signal_code, Callable cb, Thread *thread) {
cb.call(exit_code, signal_code);
thread->wait_to_finish();
}
void setup_exit_callback(Callable cb, pid_t pid) {
Thread *thread = memnew(Thread);
Callable exit_func = create_custom_callable_static_function_pointer(&on_exit).bind(cb, thread);
Callable thread_func = create_custom_callable_static_function_pointer(&await_exit).bind(exit_func, pid);
thread->start(thread_func);
}
/**
* Functions
*/
static int
pty_nonblock(int);
#if defined(__APPLE__)
static char *
pty_getproc(int);
#else
static char *
pty_getproc(int, char *);
#endif
#if defined(__APPLE__) || defined(__OpenBSD__)
static void
pty_posix_spawn(char** argv, char** env,
const struct termios *termp,
const struct winsize *winp,
int* master,
pid_t* pid,
int* err);
#endif
struct DelBuf {
int len;
DelBuf(int len) : len(len) {}
void operator()(char **p) {
if (p == nullptr)
return;
for (int i = 0; i < len; i++)
free(p[i]);
delete[] p;
}
};
Dictionary PTYUnix::fork(
const String &p_file,
const PackedStringArray &p_args,
const PackedStringArray &p_env,
const String &p_cwd,
const int &p_cols,
const int &p_rows,
const int &p_uid,
const int &p_gid,
const bool &p_utf8,
const String &p_helper_path,
const Callable &p_on_exit
) {
Dictionary result;
result["error"] = FAILED;
// file
std::string file = p_file.utf8().get_data();
// args
PackedStringArray argv_ = p_args;
// env
PackedStringArray env_ = p_env;
int envc = env_.size();
std::unique_ptr<char *, DelBuf> env_unique_ptr(new char *[envc + 1], DelBuf(envc + 1));
char **env = env_unique_ptr.get();
env[envc] = NULL;
for (int i = 0; i < envc; i++) {
std::string pair = env_[i].utf8().get_data();
env[i] = strdup(pair.c_str());
}
// cwd
std::string cwd_ = p_cwd.utf8().get_data();
// size
struct winsize winp;
winp.ws_col = p_cols;
winp.ws_row = p_rows;
winp.ws_xpixel = 0;
winp.ws_ypixel = 0;
#if !defined(__APPLE__)
// uid / gid
int uid = p_uid;
int gid = p_gid;
#endif
// termios
struct termios t = termios();
struct termios *term = &t;
term->c_iflag = ICRNL | IXON | IXANY | IMAXBEL | BRKINT;
if (p_utf8) {
#if defined(IUTF8)
term->c_iflag |= IUTF8;
#endif
}
term->c_oflag = OPOST | ONLCR;
term->c_cflag = CREAD | CS8 | HUPCL;
term->c_lflag = ICANON | ISIG | IEXTEN | ECHO | ECHOE | ECHOK | ECHOKE | ECHOCTL;
term->c_cc[VEOF] = 4;
term->c_cc[VEOL] = -1;
term->c_cc[VEOL2] = -1;
term->c_cc[VERASE] = 0x7f;
term->c_cc[VWERASE] = 23;
term->c_cc[VKILL] = 21;
term->c_cc[VREPRINT] = 18;
term->c_cc[VINTR] = 3;
term->c_cc[VQUIT] = 0x1c;
term->c_cc[VSUSP] = 26;
term->c_cc[VSTART] = 17;
term->c_cc[VSTOP] = 19;
term->c_cc[VLNEXT] = 22;
term->c_cc[VDISCARD] = 15;
term->c_cc[VMIN] = 1;
term->c_cc[VTIME] = 0;
#if (__APPLE__)
term->c_cc[VDSUSP] = 25;
term->c_cc[VSTATUS] = 20;
#endif
cfsetispeed(term, B38400);
cfsetospeed(term, B38400);
// helperPath
std::string helper_path = p_helper_path.utf8().get_data();
pid_t pid;
int master;
#if defined(__APPLE__)
int argc = argv_.size();
int argl = argc + 4;
std::unique_ptr<char *, DelBuf> argv_unique_ptr(new char *[argl], DelBuf(argl));
char **argv = argv_unique_ptr.get();
argv[0] = strdup(helper_path.c_str());
argv[1] = strdup(cwd_.c_str());
argv[2] = strdup(file.c_str());
argv[argl - 1] = NULL;
for (int i = 0; i < argc; i++) {
std::string arg = argv_[i].utf8().get_data();
argv[i + 3] = strdup(arg.c_str());
}
int err = -1;
pty_posix_spawn(argv, env, term, &winp, &master, &pid, &err);
if (err != 0) {
ERR_FAIL_V_MSG(result, "posix_spawnp failed with error: " + String(strerror(err)));
}
if (pty_nonblock(master) == -1) {
ERR_FAIL_V_MSG(result, "Could not set master fd to nonblocking.");
}
#else
int argc = argv_.size();
int argl = argc + 2;
std::unique_ptr<char *, DelBuf> argv_unique_ptr(new char *[argl], DelBuf(argl));
char** argv = argv_unique_ptr.get();
argv[0] = strdup(file.c_str());
argv[argl - 1] = NULL;
for (int i = 0; i < argc; i++) {
std::string arg = argv_[i].utf8().get_data();
argv[i + 1] = strdup(arg.c_str());
}
sigset_t newmask, oldmask;
struct sigaction sig_action;
// temporarily block all signals
// this is needed due to a race condition in openpty
// and to avoid running signal handlers in the child
// before exec* happened
sigfillset(&newmask);
pthread_sigmask(SIG_SETMASK, &newmask, &oldmask);
pid = forkpty(&master, nullptr, static_cast<termios*>(term), static_cast<winsize*>(&winp));
if (!pid) {
// remove all signal handler from child
sig_action.sa_handler = SIG_DFL;
sig_action.sa_flags = 0;
sigemptyset(&sig_action.sa_mask);
for (int i = 0 ; i < NSIG ; i++) { // NSIG is a macro for all signals + 1
sigaction(i, &sig_action, NULL);
}
}
// reenable signals
pthread_sigmask(SIG_SETMASK, &oldmask, NULL);
switch (pid) {
case -1:
ERR_FAIL_V_MSG(result, "forkpty(3) failed.");
case 0:
if (strlen(cwd_.c_str())) {
if (chdir(cwd_.c_str()) == -1) {
perror("chdir(2) failed.");
_exit(1);
}
}
if (uid != -1 && gid != -1) {
if (setgid(gid) == -1) {
perror("setgid(2) failed.");
_exit(1);
}
if (setuid(uid) == -1) {
perror("setuid(2) failed.");
_exit(1);
}
}
{
char **old = environ;
environ = env;
execvp(argv[0], argv);
environ = old;
perror("execvp(3) failed.");
_exit(1);
}
default:
if (pty_nonblock(master) == -1) {
ERR_FAIL_V_MSG(result, "Could not set master fd to nonblocking.");
}
}
#endif
result["fd"] = master;
result["pid"] = pid;
result["pty"] = ptsname(master);
// Set up process exit callback.
Callable cb = p_on_exit;
setup_exit_callback(cb, pid);
result["error"] = OK;
return result;
}
Dictionary PTYUnix::open(
const int &p_cols,
const int &p_rows
) {
Dictionary result;
result["error"] = FAILED;
// size
struct winsize winp;
winp.ws_col = p_cols;
winp.ws_row = p_rows;
winp.ws_xpixel = 0;
winp.ws_ypixel = 0;
// pty
int master, slave;
int ret = openpty(&master, &slave, nullptr, NULL, static_cast<winsize*>(&winp));
if (ret == -1) {
ERR_FAIL_V_MSG(result, "openpty(3) failed.");
}
if (pty_nonblock(master) == -1) {
ERR_FAIL_V_MSG(result, "Could not set master fd to nonblocking.");
}
if (pty_nonblock(slave) == -1) {
ERR_FAIL_V_MSG(result, "Could not set slave fd to nonblocking.");
}
result["master"] = master;
result["slave"] = slave;
result["pty"] = ptsname(master);
result["error"] = OK;
return result;
}
void resize(
const int &p_fd,
const int &p_cols,
const int &p_rows
) {
int fd = p_fd;
struct winsize winp;
winp.ws_col = p_cols;
winp.ws_row = p_rows;
winp.ws_xpixel = 0;
winp.ws_ypixel = 0;
if (ioctl(fd, TIOCSWINSZ, &winp) == -1) {
switch (errno) {
case EBADF:
ERR_FAIL_MSG("ioctl(2) failed, EBADF");
case EFAULT:
ERR_FAIL_MSG("ioctl(2) failed, EFAULT");
case EINVAL:
ERR_FAIL_MSG("ioctl(2) failed, EINVAL");
case ENOTTY:
ERR_FAIL_MSG("ioctl(2) failed, ENOTTY");
}
ERR_FAIL_MSG("ioctl(2) failed");
}
return;
}
/**
* Foreground Process Name
*/
String process(
const int &p_fd,
const String &p_tty
) {
#if defined(__APPLE__)
int fd = p_fd;
char *name = pty_getproc(fd);
#else
int fd = p_fd;
std::string tty_ = p_tty.utf8().get_data();
char *tty = strdup(tty_.c_str());
char *name = pty_getproc(fd, tty);
free(tty);
#endif
if (name == NULL) {
return "";
}
String name_ = name;
free(name);
return name_;
}
/**
* Nonblocking FD
*/
static int
pty_nonblock(int fd) {
int flags = fcntl(fd, F_GETFL, 0);
if (flags == -1) return -1;
return fcntl(fd, F_SETFL, flags | O_NONBLOCK);
}
/**
* pty_getproc
* Taken from tmux.
*/
// Taken from: tmux (http://tmux.sourceforge.net/)
// Copyright (c) 2009 Nicholas Marriott <nicm@users.sourceforge.net>
// Copyright (c) 2009 Joshua Elsasser <josh@elsasser.org>
// Copyright (c) 2009 Todd Carson <toc@daybefore.net>
//
// Permission to use, copy, modify, and distribute this software for any
// purpose with or without fee is hereby granted, provided that the above
// copyright notice and this permission notice appear in all copies.
//
// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
// WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
// IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
// OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
#if defined(__linux__)
static char *
pty_getproc(int fd, char *tty) {
FILE *f;
char *path, *buf;
size_t len;
int ch;
pid_t pgrp;
int r;
if ((pgrp = tcgetpgrp(fd)) == -1) {
return NULL;
}
r = asprintf(&path, "/proc/%lld/cmdline", (long long)pgrp);
if (r == -1 || path == NULL) return NULL;
if ((f = fopen(path, "r")) == NULL) {
free(path);
return NULL;
}
free(path);
len = 0;
buf = NULL;
while ((ch = fgetc(f)) != EOF) {
if (ch == '\0') break;
buf = (char *)realloc(buf, len + 2);
if (buf == NULL) return NULL;
buf[len++] = ch;
}
if (buf != NULL) {
buf[len] = '\0';
}
fclose(f);
return buf;
}
#elif defined(__APPLE__)
static char *
pty_getproc(int fd) {
int mib[4] = { CTL_KERN, KERN_PROC, KERN_PROC_PID, 0 };
size_t size;
struct kinfo_proc kp;
if ((mib[3] = tcgetpgrp(fd)) == -1) {
return NULL;
}
size = sizeof kp;
if (sysctl(mib, 4, &kp, &size, NULL, 0) == -1) {
return NULL;
}
if (size != (sizeof kp) || *kp.kp_proc.p_comm == '\0') {
return NULL;
}
return strdup(kp.kp_proc.p_comm);
}
#else
static char *
pty_getproc(int fd, char *tty) {
return NULL;
}
#endif
#if defined(__APPLE__)
static void
pty_posix_spawn(char** argv, char** env,
const struct termios *termp,
const struct winsize *winp,
int* master,
pid_t* pid,
int* err) {
int low_fds[3];
size_t count = 0;
for (; count < 3; count++) {
low_fds[count] = posix_openpt(O_RDWR);
if (low_fds[count] >= STDERR_FILENO)
break;
}
int flags = POSIX_SPAWN_CLOEXEC_DEFAULT |
POSIX_SPAWN_SETSIGDEF |
POSIX_SPAWN_SETSIGMASK |
POSIX_SPAWN_SETSID;
*master = posix_openpt(O_RDWR);
if (*master == -1) {
return;
}
int res = grantpt(*master) || unlockpt(*master);
if (res == -1) {
return;
}
// Use TIOCPTYGNAME instead of ptsname() to avoid threading problems.
int slave;
char slave_pty_name[128];
res = ioctl(*master, TIOCPTYGNAME, slave_pty_name);
if (res == -1) {
return;
}
slave = open(slave_pty_name, O_RDWR | O_NOCTTY);
if (slave == -1) {
return;
}
if (termp) {
res = tcsetattr(slave, TCSANOW, termp);
if (res == -1) {
return;
};
}
if (winp) {
res = ioctl(slave, TIOCSWINSZ, winp);
if (res == -1) {
return;
}
}
posix_spawn_file_actions_t acts;
posix_spawn_file_actions_init(&acts);
posix_spawn_file_actions_adddup2(&acts, slave, STDIN_FILENO);
posix_spawn_file_actions_adddup2(&acts, slave, STDOUT_FILENO);
posix_spawn_file_actions_adddup2(&acts, slave, STDERR_FILENO);
posix_spawn_file_actions_addclose(&acts, slave);
posix_spawn_file_actions_addclose(&acts, *master);
posix_spawnattr_t attrs;
posix_spawnattr_init(&attrs);
*err = posix_spawnattr_setflags(&attrs, flags);
if (*err != 0) {
goto done;
}
sigset_t signal_set;
/* Reset all signal the child to their default behavior */
sigfillset(&signal_set);
*err = posix_spawnattr_setsigdefault(&attrs, &signal_set);
if (*err != 0) {
goto done;
}
/* Reset the signal mask for all signals */
sigemptyset(&signal_set);
*err = posix_spawnattr_setsigmask(&attrs, &signal_set);
if (*err != 0) {
goto done;
}
do {
*err = posix_spawn(pid, argv[0], &acts, &attrs, argv, env);
} while (*err == EINTR);
done:
posix_spawn_file_actions_destroy(&acts);
posix_spawnattr_destroy(&attrs);
for (; count > 0; count--) {
close(low_fds[count]);
}
}
#endif
#endif

33
addons/godot_xterm/native/src/pty_unix.h Normal file
View file

@ -0,0 +1,33 @@
// SPDX-FileCopyrightText: 2024 Leroy Hopson <godot-xterm@leroy.nix.nz>
// SPDX-License-Identifier: MIT
#pragma once
#include <godot_cpp/variant/callable.hpp>
#include <godot_cpp/variant/dictionary.hpp>
namespace godot
{
class PTYUnix
{
public:
static Dictionary fork(
const String &p_file,
const PackedStringArray &p_args,
const PackedStringArray &p_env,
const String &p_cwd,
const int &p_cols,
const int &p_rows,
const int &p_uid,
const int &p_gid,
const bool &p_utf8,
const String &p_helper_path,
const Callable &p_on_exit
);
static Dictionary open(
const int &p_cols,
const int &p_rows
);
};
} // namespace godot

2
addons/godot_xterm/native/src/register_types.cpp
View file

@ -1,5 +1,6 @@
#include "register_types.h"
#include "pty.h"
#include "terminal.h"
#include <gdextension_interface.h>
@ -13,6 +14,7 @@ void initialize_godot_xterm_module(ModuleInitializationLevel p_level) {
return;
}
ClassDB::register_class<PTY>();
ClassDB::register_class<Terminal>();
}

29
addons/godot_xterm/native/src_old/node_pty/unix/pty.cc → addons/godot_xterm/native/src_old/pty_unix.cpp
View file

@ -1,7 +1,9 @@
/**
* Copyright (c) 2012-2015, Christopher Jeffrey (MIT License)
* Copyright (c) 2017, Daniel Imms (MIT License)
* Copyright (c) 2021, Leroy Hopson (MIT License)
* Copyright (c) 2021, 2024 Leroy Hopson (MIT License)
*
* SPDX-License-Identifier: MIT
*
* pty.cc:
* This file is responsible for starting processes
@ -18,8 +20,9 @@
* Includes
*/
#include "pty.h"
#include "libuv_utils.h"
#if !defined(_WIN32) && !defined(_PTY_DISABLED)
#include "pty_unix.h"
#include <godot_cpp/variant/callable.hpp>
#include <uv.h>
@ -29,7 +32,6 @@
#include <unistd.h>
#include <fcntl.h>
#include <signal.h>
#include <sys/ioctl.h>
#include <sys/stat.h>
#include <sys/types.h>
@ -339,14 +341,15 @@ Error PTYUnix::resize(int p_fd, int p_cols, int p_rows) {
if (ioctl(fd, TIOCSWINSZ, &winp) == -1) {
switch (errno) {
case EBADF:
RETURN_UV_ERR(UV_EBADF)
case EFAULT:
RETURN_UV_ERR(UV_EFAULT)
case EINVAL:
RETURN_UV_ERR(UV_EINVAL);
case ENOTTY:
RETURN_UV_ERR(UV_ENOTTY);
// TODO: Fixme!
//case EBADF:
// RETURN_UV_ERR(UV_EBADF)
//case EFAULT:
// RETURN_UV_ERR(UV_EFAULT)
//case EINVAL:
// RETURN_UV_ERR(UV_EINVAL);
//case ENOTTY:
// RETURN_UV_ERR(UV_ENOTTY);
}
ERR_PRINT("ioctl(2) failed");
return FAILED;
@ -673,3 +676,5 @@ void PTYUnix::_bind_methods() {
}
void PTYUnix::_init() {}
#endif

7
addons/godot_xterm/native/src_old/node_pty/unix/pty.h → addons/godot_xterm/native/src_old/pty_unix.h
View file

@ -1,8 +1,7 @@
// SPDX-FileCopyrightText: 2021-2022 Leroy Hopson <godot-xterm@leroy.geek.nz>
// SPDX-FileCopyrightText: 2021-2022, 2024 Leroy Hopson <godot-xterm@leroy.nix.nz>
// SPDX-License-Identifier: MIT
#ifndef GODOT_XTERM_PTY_H
#define GODOT_XTERM_PTY_H
#pragma once
#include <godot_cpp/classes/ref_counted.hpp>
#include <godot_cpp/variant/callable.hpp>
@ -30,5 +29,3 @@ protected:
};
} // namespace godot
#endif // GODOT_XTERM_PTY_H

827
addons/godot_xterm/native/src_old/pty_unix_new.cpp Normal file
View file

@ -0,0 +1,827 @@
/**
* Copyright (c) 2012-2015, Christopher Jeffrey (MIT License)
* Copyright (c) 2017, Daniel Imms (MIT License)
* Copyright (c) 2024, Leroy Hopson (MIT License)
*
* SPDX-License-Identifier: MIT
*
* pty.cc:
* This file is responsible for starting processes
* with pseudo-terminal file descriptors.
*
* See:
* man pty
* man tty_ioctl
* man termios
* man forkpty
*/
/**
* Includes
*/
using namespace godot;
#include <godot_cpp/variant/variant.hpp>
#include <uv.h>
#include <errno.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <sys/wait.h>
#include <fcntl.h>
#include <signal.h>
/* forkpty */
/* http://www.gnu.org/software/gnulib/manual/html_node/forkpty.html */
#if defined(__linux__)
#include <pty.h>
#elif defined(__APPLE__)
#include <util.h>
#elif defined(__FreeBSD__)
#include <libutil.h>
#endif
/* Some platforms name VWERASE and VDISCARD differently */
#if !defined(VWERASE) && defined(VWERSE)
#define VWERASE VWERSE
#endif
#if !defined(VDISCARD) && defined(VDISCRD)
#define VDISCARD VDISCRD
#endif
/* for pty_getproc */
#if defined(__linux__)
#include <stdio.h>
#include <stdint.h>
#elif defined(__APPLE__)
#include <libproc.h>
#include <os/availability.h>
#include <paths.h>
#include <spawn.h>
#include <sys/event.h>
#include <termios.h>
#endif
/* NSIG - macro for highest signal + 1, should be defined */
#ifndef NSIG
#define NSIG 32
#endif
/* macOS 10.14 back does not define this constant */
#ifndef POSIX_SPAWN_SETSID
#define POSIX_SPAWN_SETSID 1024
#endif
/* environ for execvpe */
/* node/src/node_child_process.cc */
#if !defined(__APPLE__)
extern char **environ;
#endif
#if defined(__APPLE__)
extern "C" {
// Changes the current thread's directory to a path or directory file
// descriptor. libpthread only exposes a syscall wrapper starting in
// macOS 10.12, but the system call dates back to macOS 10.5. On older OSes,
// the syscall is issued directly.
int pthread_chdir_np(const char* dir) API_AVAILABLE(macosx(10.12));
int pthread_fchdir_np(int fd) API_AVAILABLE(macosx(10.12));
}
#define HANDLE_EINTR(x) ({ \
int eintr_wrapper_counter = 0; \
decltype(x) eintr_wrapper_result; \
do { \
eintr_wrapper_result = (x); \
} while (eintr_wrapper_result == -1 && errno == EINTR && \
eintr_wrapper_counter++ < 100); \
eintr_wrapper_result; \
})
#endif
/**
* Structs
*/
struct pty_baton {
Nan::Persistent<v8::Function> cb;
int exit_code;
int signal_code;
pid_t pid;
uv_async_t async;
uv_thread_t tid;
};
/**
* Methods
*/
NAN_METHOD(PtyFork);
NAN_METHOD(PtyOpen);
NAN_METHOD(PtyResize);
NAN_METHOD(PtyGetProc);
/**
* Functions
*/
static int
pty_nonblock(int);
#if defined(__APPLE__)
static char *
pty_getproc(int);
#else
static char *
pty_getproc(int, char *);
#endif
static void
pty_waitpid(void *);
static void
pty_after_waitpid(uv_async_t *);
static void
pty_after_close(uv_handle_t *);
#if defined(__APPLE__) || defined(__OpenBSD__)
static void
pty_posix_spawn(char** argv, char** env,
const struct termios *termp,
const struct winsize *winp,
int* master,
pid_t* pid,
int* err);
#endif
Dictionary fork(
const String &p_file,
const PackedStringArray &p_args,
const PackedStringArray &p_env,
const String &p_cwd,
const int p_cols,
const int p_rows,
const int p_uid,
const int p_gid,
const bool p_utf8,
const String &p_helper_path,
const Callable &p_on_exit
) {
// file
std::string file = p_file.utf8().get_data();
// args
v8::Local<v8::Array> argv_ = v8::Local<v8::Array>::Cast(info[1]);
// env
v8::Local<v8::Array> env_ = v8::Local<v8::Array>::Cast(info[2]);
int envc = env_->Length();
char **env = new char*[envc+1];
env[envc] = NULL;
for (int i = 0; i < envc; i++) {
Nan::Utf8String pair(Nan::Get(env_, i).ToLocalChecked());
env[i] = strdup(*pair);
}
// cwd
Nan::Utf8String cwd_(info[3]);
// size
struct winsize winp;
winp.ws_col = info[4]->IntegerValue(Nan::GetCurrentContext()).FromJust();
winp.ws_row = info[5]->IntegerValue(Nan::GetCurrentContext()).FromJust();
winp.ws_xpixel = 0;
winp.ws_ypixel = 0;
#if !defined(__APPLE__)
// uid / gid
int uid = info[6]->IntegerValue(Nan::GetCurrentContext()).FromJust();
int gid = info[7]->IntegerValue(Nan::GetCurrentContext()).FromJust();
#endif
// termios
struct termios t = termios();
struct termios *term = &t;
term->c_iflag = ICRNL | IXON | IXANY | IMAXBEL | BRKINT;
if (Nan::To<bool>(info[8]).FromJust()) {
#if defined(IUTF8)
term->c_iflag |= IUTF8;
#endif
}
term->c_oflag = OPOST | ONLCR;
term->c_cflag = CREAD | CS8 | HUPCL;
term->c_lflag = ICANON | ISIG | IEXTEN | ECHO | ECHOE | ECHOK | ECHOKE | ECHOCTL;
term->c_cc[VEOF] = 4;
term->c_cc[VEOL] = -1;
term->c_cc[VEOL2] = -1;
term->c_cc[VERASE] = 0x7f;
term->c_cc[VWERASE] = 23;
term->c_cc[VKILL] = 21;
term->c_cc[VREPRINT] = 18;
term->c_cc[VINTR] = 3;
term->c_cc[VQUIT] = 0x1c;
term->c_cc[VSUSP] = 26;
term->c_cc[VSTART] = 17;
term->c_cc[VSTOP] = 19;
term->c_cc[VLNEXT] = 22;
term->c_cc[VDISCARD] = 15;
term->c_cc[VMIN] = 1;
term->c_cc[VTIME] = 0;
#if (__APPLE__)
term->c_cc[VDSUSP] = 25;
term->c_cc[VSTATUS] = 20;
#endif
cfsetispeed(term, B38400);
cfsetospeed(term, B38400);
// helperPath
Nan::Utf8String helper_path(info[9]);
pid_t pid;
int master;
#if defined(__APPLE__)
int argc = argv_->Length();
int argl = argc + 4;
char **argv = new char*[argl];
argv[0] = strdup(*helper_path);
argv[1] = strdup(*cwd_);
argv[2] = strdup(*file);
argv[argl - 1] = NULL;
for (int i = 0; i < argc; i++) {
Nan::Utf8String arg(Nan::Get(argv_, i).ToLocalChecked());
argv[i + 3] = strdup(*arg);
}
int err = -1;
pty_posix_spawn(argv, env, term, &winp, &master, &pid, &err);
if (err != 0) {
Nan::ThrowError("posix_spawnp failed.");
goto done;
}
if (pty_nonblock(master) == -1) {
Nan::ThrowError("Could not set master fd to nonblocking.");
goto done;
}
#else
int argc = argv_->Length();
int argl = argc + 2;
char **argv = new char*[argl];
argv[0] = strdup(*file);
argv[argl - 1] = NULL;
for (int i = 0; i < argc; i++) {
Nan::Utf8String arg(Nan::Get(argv_, i).ToLocalChecked());
argv[i + 1] = strdup(*arg);
}
char* cwd = strdup(*cwd_);
sigset_t newmask, oldmask;
struct sigaction sig_action;
// temporarily block all signals
// this is needed due to a race condition in openpty
// and to avoid running signal handlers in the child
// before exec* happened
sigfillset(&newmask);
pthread_sigmask(SIG_SETMASK, &newmask, &oldmask);
pid = forkpty(&master, nullptr, static_cast<termios*>(term), static_cast<winsize*>(&winp));
if (!pid) {
// remove all signal handler from child
sig_action.sa_handler = SIG_DFL;
sig_action.sa_flags = 0;
sigemptyset(&sig_action.sa_mask);
for (int i = 0 ; i < NSIG ; i++) { // NSIG is a macro for all signals + 1
sigaction(i, &sig_action, NULL);
}
} else {
for (int i = 0; i < argl; i++) free(argv[i]);
delete[] argv;
for (int i = 0; i < envc; i++) free(env[i]);
delete[] env;
free(cwd);
}
// reenable signals
pthread_sigmask(SIG_SETMASK, &oldmask, NULL);
switch (pid) {
case -1:
Nan::ThrowError("forkpty(3) failed.");
goto done;
case 0:
if (strlen(cwd)) {
if (chdir(cwd) == -1) {
perror("chdir(2) failed.");
_exit(1);
}
}
if (uid != -1 && gid != -1) {
if (setgid(gid) == -1) {
perror("setgid(2) failed.");
_exit(1);
}
if (setuid(uid) == -1) {
perror("setuid(2) failed.");
_exit(1);
}
}
{
char **old = environ;
environ = env;
execvp(argv[0], argv);
environ = old;
perror("execvp(3) failed.");
_exit(1);
}
default:
if (pty_nonblock(master) == -1) {
Nan::ThrowError("Could not set master fd to nonblocking.");
goto done;
}
}
#endif
{
v8::Local<v8::Object> obj = Nan::New<v8::Object>();
Nan::Set(obj,
Nan::New<v8::String>("fd").ToLocalChecked(),
Nan::New<v8::Number>(master));
Nan::Set(obj,
Nan::New<v8::String>("pid").ToLocalChecked(),
Nan::New<v8::Number>(pid));
Nan::Set(obj,
Nan::New<v8::String>("pty").ToLocalChecked(),
Nan::New<v8::String>(ptsname(master)).ToLocalChecked());
pty_baton *baton = new pty_baton();
baton->exit_code = 0;
baton->signal_code = 0;
baton->cb.Reset(v8::Local<v8::Function>::Cast(info[10]));
baton->pid = pid;
baton->async.data = baton;
uv_async_init(uv_default_loop(), &baton->async, pty_after_waitpid);
uv_thread_create(&baton->tid, pty_waitpid, static_cast<void*>(baton));
return info.GetReturnValue().Set(obj);
}
done:
#if defined(__APPLE__)
for (int i = 0; i < argl; i++) free(argv[i]);
delete[] argv;
for (int i = 0; i < envc; i++) free(env[i]);
delete[] env;
#endif
return info.GetReturnValue().SetUndefined();
}
NAN_METHOD(PtyOpen) {
Nan::HandleScope scope;
if (info.Length() != 2 ||
!info[0]->IsNumber() ||
!info[1]->IsNumber()) {
return Nan::ThrowError("Usage: pty.open(cols, rows)");
}
// size
struct winsize winp;
winp.ws_col = info[0]->IntegerValue(Nan::GetCurrentContext()).FromJust();
winp.ws_row = info[1]->IntegerValue(Nan::GetCurrentContext()).FromJust();
winp.ws_xpixel = 0;
winp.ws_ypixel = 0;
// pty
int master, slave;
int ret = openpty(&master, &slave, nullptr, NULL, static_cast<winsize*>(&winp));
if (ret == -1) {
return Nan::ThrowError("openpty(3) failed.");
}
if (pty_nonblock(master) == -1) {
return Nan::ThrowError("Could not set master fd to nonblocking.");
}
if (pty_nonblock(slave) == -1) {
return Nan::ThrowError("Could not set slave fd to nonblocking.");
}
v8::Local<v8::Object> obj = Nan::New<v8::Object>();
Nan::Set(obj,
Nan::New<v8::String>("master").ToLocalChecked(),
Nan::New<v8::Number>(master));
Nan::Set(obj,
Nan::New<v8::String>("slave").ToLocalChecked(),
Nan::New<v8::Number>(slave));
Nan::Set(obj,
Nan::New<v8::String>("pty").ToLocalChecked(),
Nan::New<v8::String>(ptsname(master)).ToLocalChecked());
return info.GetReturnValue().Set(obj);
}
NAN_METHOD(PtyResize) {
Nan::HandleScope scope;
if (info.Length() != 3 ||
!info[0]->IsNumber() ||
!info[1]->IsNumber() ||
!info[2]->IsNumber()) {
return Nan::ThrowError("Usage: pty.resize(fd, cols, rows)");
}
int fd = info[0]->IntegerValue(Nan::GetCurrentContext()).FromJust();
struct winsize winp;
winp.ws_col = info[1]->IntegerValue(Nan::GetCurrentContext()).FromJust();
winp.ws_row = info[2]->IntegerValue(Nan::GetCurrentContext()).FromJust();
winp.ws_xpixel = 0;
winp.ws_ypixel = 0;
if (ioctl(fd, TIOCSWINSZ, &winp) == -1) {
switch (errno) {
case EBADF: return Nan::ThrowError("ioctl(2) failed, EBADF");
case EFAULT: return Nan::ThrowError("ioctl(2) failed, EFAULT");
case EINVAL: return Nan::ThrowError("ioctl(2) failed, EINVAL");
case ENOTTY: return Nan::ThrowError("ioctl(2) failed, ENOTTY");
}
return Nan::ThrowError("ioctl(2) failed");
}
return info.GetReturnValue().SetUndefined();
}
/**
* Foreground Process Name
*/
NAN_METHOD(PtyGetProc) {
Nan::HandleScope scope;
#if defined(__APPLE__)
if (info.Length() != 1 ||
!info[0]->IsNumber()) {
return Nan::ThrowError("Usage: pty.process(pid)");
}
int pid = info[0]->IntegerValue(Nan::GetCurrentContext()).FromJust();
char *name = pty_getproc(pid);
#else
if (info.Length() != 2 ||
!info[0]->IsNumber() ||
!info[1]->IsString()) {
return Nan::ThrowError("Usage: pty.process(fd, tty)");
}
int fd = info[0]->IntegerValue(Nan::GetCurrentContext()).FromJust();
Nan::Utf8String tty_(info[1]);
char *tty = strdup(*tty_);
char *name = pty_getproc(fd, tty);
free(tty);
#endif
if (name == NULL) {
return info.GetReturnValue().SetUndefined();
}
v8::Local<v8::String> name_ = Nan::New<v8::String>(name).ToLocalChecked();
free(name);
return info.GetReturnValue().Set(name_);
}
/**
* Nonblocking FD
*/
static int
pty_nonblock(int fd) {
int flags = fcntl(fd, F_GETFL, 0);
if (flags == -1) return -1;
return fcntl(fd, F_SETFL, flags | O_NONBLOCK);
}
/**
* pty_waitpid
* Wait for SIGCHLD to read exit status.
*/
static void
pty_waitpid(void *data) {
int ret;
int stat_loc;
pty_baton *baton = static_cast<pty_baton*>(data);
errno = 0;
#if defined(__APPLE__)
// Based on
// https://source.chromium.org/chromium/chromium/src/+/main:base/process/kill_mac.cc;l=35-69?
int kq = HANDLE_EINTR(kqueue());
struct kevent change = {0};
EV_SET(&change, baton->pid, EVFILT_PROC, EV_ADD, NOTE_EXIT, 0, NULL);
ret = HANDLE_EINTR(kevent(kq, &change, 1, NULL, 0, NULL));
if (ret == -1) {
if (errno == ESRCH) {
// At this point, one of the following has occurred:
// 1. The process has died but has not yet been reaped.
// 2. The process has died and has already been reaped.
// 3. The process is in the process of dying. It's no longer
// kqueueable, but it may not be waitable yet either. Mark calls
// this case the "zombie death race".
ret = HANDLE_EINTR(waitpid(baton->pid, &stat_loc, WNOHANG));
if (ret == 0) {
ret = kill(baton->pid, SIGKILL);
if (ret != -1) {
HANDLE_EINTR(waitpid(baton->pid, &stat_loc, 0));
}
}
}
} else {
struct kevent event = {0};
ret = HANDLE_EINTR(kevent(kq, NULL, 0, &event, 1, NULL));
if (ret == 1) {
if ((event.fflags & NOTE_EXIT) &&
(event.ident == static_cast<uintptr_t>(baton->pid))) {
// The process is dead or dying. This won't block for long, if at
// all.
HANDLE_EINTR(waitpid(baton->pid, &stat_loc, 0));
}
}
}
#else
if ((ret = waitpid(baton->pid, &stat_loc, 0)) != baton->pid) {
if (ret == -1 && errno == EINTR) {
return pty_waitpid(baton);
}
if (ret == -1 && errno == ECHILD) {
// XXX node v0.8.x seems to have this problem.
// waitpid is already handled elsewhere.
;
} else {
assert(false);
}
}
#endif
if (WIFEXITED(stat_loc)) {
baton->exit_code = WEXITSTATUS(stat_loc); // errno?
}
if (WIFSIGNALED(stat_loc)) {
baton->signal_code = WTERMSIG(stat_loc);
}
uv_async_send(&baton->async);
}
/**
* pty_after_waitpid
* Callback after exit status has been read.
*/
static void
pty_after_waitpid(uv_async_t *async) {
Nan::HandleScope scope;
pty_baton *baton = static_cast<pty_baton*>(async->data);
v8::Local<v8::Value> argv[] = {
Nan::New<v8::Integer>(baton->exit_code),
Nan::New<v8::Integer>(baton->signal_code),
};
v8::Local<v8::Function> cb = Nan::New<v8::Function>(baton->cb);
baton->cb.Reset();
memset(&baton->cb, -1, sizeof(baton->cb));
Nan::AsyncResource resource("pty_after_waitpid");
resource.runInAsyncScope(Nan::GetCurrentContext()->Global(), cb, 2, argv);
uv_close((uv_handle_t *)async, pty_after_close);
}
/**
* pty_after_close
* uv_close() callback - free handle data
*/
static void
pty_after_close(uv_handle_t *handle) {
uv_async_t *async = (uv_async_t *)handle;
pty_baton *baton = static_cast<pty_baton*>(async->data);
delete baton;
}
/**
* pty_getproc
* Taken from tmux.
*/
// Taken from: tmux (http://tmux.sourceforge.net/)
// Copyright (c) 2009 Nicholas Marriott <nicm@users.sourceforge.net>
// Copyright (c) 2009 Joshua Elsasser <josh@elsasser.org>
// Copyright (c) 2009 Todd Carson <toc@daybefore.net>
//
// Permission to use, copy, modify, and distribute this software for any
// purpose with or without fee is hereby granted, provided that the above
// copyright notice and this permission notice appear in all copies.
//
// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
// WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
// IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
// OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
#if defined(__linux__)
static char *
pty_getproc(int fd, char *tty) {
FILE *f;
char *path, *buf;
size_t len;
int ch;
pid_t pgrp;
int r;
if ((pgrp = tcgetpgrp(fd)) == -1) {
return NULL;
}
r = asprintf(&path, "/proc/%lld/cmdline", (long long)pgrp);
if (r == -1 || path == NULL) return NULL;
if ((f = fopen(path, "r")) == NULL) {
free(path);
return NULL;
}
free(path);
len = 0;
buf = NULL;
while ((ch = fgetc(f)) != EOF) {
if (ch == '\0') break;
buf = (char *)realloc(buf, len + 2);
if (buf == NULL) return NULL;
buf[len++] = ch;
}
if (buf != NULL) {
buf[len] = '\0';
}
fclose(f);
return buf;
}
#elif defined(__APPLE__)
static char *
pty_getproc(int pid) {
char pname[MAXCOMLEN + 1];
if (!proc_name(pid, pname, sizeof(pname))) {
return NULL;
}
return strdup(pname);
}
#else
static char *
pty_getproc(int fd, char *tty) {
return NULL;
}
#endif
#if defined(__APPLE__)
static void
pty_posix_spawn(char** argv, char** env,
const struct termios *termp,
const struct winsize *winp,
int* master,
pid_t* pid,
int* err) {
int low_fds[3];
size_t count = 0;
for (; count < 3; count++) {
low_fds[count] = posix_openpt(O_RDWR);
if (low_fds[count] >= STDERR_FILENO)
break;
}
int flags = POSIX_SPAWN_CLOEXEC_DEFAULT |
POSIX_SPAWN_SETSIGDEF |
POSIX_SPAWN_SETSIGMASK |
POSIX_SPAWN_SETSID;
*master = posix_openpt(O_RDWR);
if (*master == -1) {
return;
}
int res = grantpt(*master) || unlockpt(*master);
if (res == -1) {
return;
}
// Use TIOCPTYGNAME instead of ptsname() to avoid threading problems.
int slave;
char slave_pty_name[128];
res = ioctl(*master, TIOCPTYGNAME, slave_pty_name);
if (res == -1) {
return;
}
slave = open(slave_pty_name, O_RDWR | O_NOCTTY);
if (slave == -1) {
return;
}
if (termp) {
res = tcsetattr(slave, TCSANOW, termp);
if (res == -1) {
return;
};
}
if (winp) {
res = ioctl(slave, TIOCSWINSZ, winp);
if (res == -1) {
return;
}
}
posix_spawn_file_actions_t acts;
posix_spawn_file_actions_init(&acts);
posix_spawn_file_actions_adddup2(&acts, slave, STDIN_FILENO);
posix_spawn_file_actions_adddup2(&acts, slave, STDOUT_FILENO);
posix_spawn_file_actions_adddup2(&acts, slave, STDERR_FILENO);
posix_spawn_file_actions_addclose(&acts, slave);
posix_spawn_file_actions_addclose(&acts, *master);
posix_spawnattr_t attrs;
posix_spawnattr_init(&attrs);
*err = posix_spawnattr_setflags(&attrs, flags);
if (*err != 0) {
goto done;
}
sigset_t signal_set;
/* Reset all signal the child to their default behavior */
sigfillset(&signal_set);
*err = posix_spawnattr_setsigdefault(&attrs, &signal_set);
if (*err != 0) {
goto done;
}
/* Reset the signal mask for all signals */
sigemptyset(&signal_set);
*err = posix_spawnattr_setsigmask(&attrs, &signal_set);
if (*err != 0) {
goto done;
}
do
*err = posix_spawn(pid, argv[0], &acts, &attrs, argv, env);
while (*err == EINTR);
done:
posix_spawn_file_actions_destroy(&acts);
posix_spawnattr_destroy(&attrs);
for (; count > 0; count--) {
close(low_fds[count]);
}
}
#endif
/**
* Init
*/
NAN_MODULE_INIT(init) {
Nan::HandleScope scope;
Nan::Export(target, "fork", PtyFork);
Nan::Export(target, "open", PtyOpen);
Nan::Export(target, "resize", PtyResize);
Nan::Export(target, "process", PtyGetProc);
}
NODE_MODULE(pty, init)

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addons/godot_xterm/native/src_old/pty_unix_original.cpp Normal file
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@ -0,0 +1,788 @@
/**
* Copyright (c) 2012-2015, Christopher Jeffrey (MIT License)
* Copyright (c) 2017, Daniel Imms (MIT License)
* Copyright (c) 2024, Leroy Hopson (MIT License)
*
* SPDX-License-Identifier: MIT
*
* pty.cc:
* This file is responsible for starting processes
* with pseudo-terminal file descriptors.
*
* See:
* man pty
* man tty_ioctl
* man termios
* man forkpty
*/
/**
* Includes
*/
#if !defined(_WIN32) && !defined(_PTY_DISABLED)
#define NODE_ADDON_API_DISABLE_DEPRECATED
#include <assert.h>
#include <errno.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <thread>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <sys/wait.h>
#include <fcntl.h>
#include <signal.h>
/* forkpty */
/* http://www.gnu.org/software/gnulib/manual/html_node/forkpty.html */
#if defined(__linux__)
#include <pty.h>
#elif defined(__APPLE__)
#include <util.h>
#elif defined(__FreeBSD__)
#include <libutil.h>
#endif
/* Some platforms name VWERASE and VDISCARD differently */
#if !defined(VWERASE) && defined(VWERSE)
#define VWERASE VWERSE
#endif
#if !defined(VDISCARD) && defined(VDISCRD)
#define VDISCARD VDISCRD
#endif
/* for pty_getproc */
#if defined(__linux__)
#include <stdio.h>
#include <stdint.h>
#elif defined(__APPLE__)
#include <libproc.h>
#include <os/availability.h>
#include <paths.h>
#include <spawn.h>
#include <sys/event.h>
#include <sys/sysctl.h>
#include <termios.h>
#endif
/* NSIG - macro for highest signal + 1, should be defined */
#ifndef NSIG
#define NSIG 32
#endif
/* macOS 10.14 back does not define this constant */
#ifndef POSIX_SPAWN_SETSID
#define POSIX_SPAWN_SETSID 1024
#endif
/* environ for execvpe */
/* node/src/node_child_process.cc */
#if !defined(__APPLE__)
extern char **environ;
#endif
#if defined(__APPLE__)
extern "C" {
// Changes the current thread's directory to a path or directory file
// descriptor. libpthread only exposes a syscall wrapper starting in
// macOS 10.12, but the system call dates back to macOS 10.5. On older OSes,
// the syscall is issued directly.
int pthread_chdir_np(const char* dir) API_AVAILABLE(macosx(10.12));
int pthread_fchdir_np(int fd) API_AVAILABLE(macosx(10.12));
}
#define HANDLE_EINTR(x) ({ \
int eintr_wrapper_counter = 0; \
decltype(x) eintr_wrapper_result; \
do { \
eintr_wrapper_result = (x); \
} while (eintr_wrapper_result == -1 && errno == EINTR && \
eintr_wrapper_counter++ < 100); \
eintr_wrapper_result; \
})
#endif
struct ExitEvent {
int exit_code = 0, signal_code = 0;
};
void SetupExitCallback(Napi::Env env, Napi::Function cb, pid_t pid) {
std::thread *th = new std::thread;
// Don't use Napi::AsyncWorker which is limited by UV_THREADPOOL_SIZE.
auto tsfn = Napi::ThreadSafeFunction::New(
env,
cb, // JavaScript function called asynchronously
"SetupExitCallback_resource", // Name
0, // Unlimited queue
1, // Only one thread will use this initially
[th](Napi::Env) { // Finalizer used to clean threads up
th->join();
delete th;
});
*th = std::thread([tsfn = std::move(tsfn), pid] {
auto callback = [](Napi::Env env, Napi::Function cb, ExitEvent *exit_event) {
cb.Call({Napi::Number::New(env, exit_event->exit_code),
Napi::Number::New(env, exit_event->signal_code)});
delete exit_event;
};
int ret;
int stat_loc;
#if defined(__APPLE__)
// Based on
// https://source.chromium.org/chromium/chromium/src/+/main:base/process/kill_mac.cc;l=35-69?
int kq = HANDLE_EINTR(kqueue());
struct kevent change = {0};
EV_SET(&change, pid, EVFILT_PROC, EV_ADD, NOTE_EXIT, 0, NULL);
ret = HANDLE_EINTR(kevent(kq, &change, 1, NULL, 0, NULL));
if (ret == -1) {
if (errno == ESRCH) {
// At this point, one of the following has occurred:
// 1. The process has died but has not yet been reaped.
// 2. The process has died and has already been reaped.
// 3. The process is in the process of dying. It's no longer
// kqueueable, but it may not be waitable yet either. Mark calls
// this case the "zombie death race".
ret = HANDLE_EINTR(waitpid(pid, &stat_loc, WNOHANG));
if (ret == 0) {
ret = kill(pid, SIGKILL);
if (ret != -1) {
HANDLE_EINTR(waitpid(pid, &stat_loc, 0));
}
}
}
} else {
struct kevent event = {0};
ret = HANDLE_EINTR(kevent(kq, NULL, 0, &event, 1, NULL));
if (ret == 1) {
if ((event.fflags & NOTE_EXIT) &&
(event.ident == static_cast<uintptr_t>(pid))) {
// The process is dead or dying. This won't block for long, if at
// all.
HANDLE_EINTR(waitpid(pid, &stat_loc, 0));
}
}
}
#else
while (true) {
errno = 0;
if ((ret = waitpid(pid, &stat_loc, 0)) != pid) {
if (ret == -1 && errno == EINTR) {
continue;
}
if (ret == -1 && errno == ECHILD) {
// XXX node v0.8.x seems to have this problem.
// waitpid is already handled elsewhere.
;
} else {
assert(false);
}
}
break;
}
#endif
ExitEvent *exit_event = new ExitEvent;
if (WIFEXITED(stat_loc)) {
exit_event->exit_code = WEXITSTATUS(stat_loc); // errno?
}
if (WIFSIGNALED(stat_loc)) {
exit_event->signal_code = WTERMSIG(stat_loc);
}
auto status = tsfn.BlockingCall(exit_event, callback); // In main thread
assert(status == napi_ok);
tsfn.Release();
});
}
/**
* Methods
*/
Napi::Value PtyFork(const Napi::CallbackInfo& info);
Napi::Value PtyOpen(const Napi::CallbackInfo& info);
Napi::Value PtyResize(const Napi::CallbackInfo& info);
Napi::Value PtyGetProc(const Napi::CallbackInfo& info);
/**
* Functions
*/
static int
pty_nonblock(int);
#if defined(__APPLE__)
static char *
pty_getproc(int);
#else
static char *
pty_getproc(int, char *);
#endif
#if defined(__APPLE__) || defined(__OpenBSD__)
static void
pty_posix_spawn(char** argv, char** env,
const struct termios *termp,
const struct winsize *winp,
int* master,
pid_t* pid,
int* err);
#endif
struct DelBuf {
int len;
DelBuf(int len) : len(len) {}
void operator()(char **p) {
if (p == nullptr)
return;
for (int i = 0; i < len; i++)
free(p[i]);
delete[] p;
}
};
Napi::Value PtyFork(const Napi::CallbackInfo& info) {
Napi::Env napiEnv(info.Env());
Napi::HandleScope scope(napiEnv);
if (info.Length() != 11 ||
!info[0].IsString() ||
!info[1].IsArray() ||
!info[2].IsArray() ||
!info[3].IsString() ||
!info[4].IsNumber() ||
!info[5].IsNumber() ||
!info[6].IsNumber() ||
!info[7].IsNumber() ||
!info[8].IsBoolean() ||
!info[9].IsString() ||
!info[10].IsFunction()) {
throw Napi::Error::New(napiEnv, "Usage: pty.fork(file, args, env, cwd, cols, rows, uid, gid, utf8, helperPath, onexit)");
}
// file
std::string file = info[0].As<Napi::String>();
// args
Napi::Array argv_ = info[1].As<Napi::Array>();
// env
Napi::Array env_ = info[2].As<Napi::Array>();
int envc = env_.Length();
std::unique_ptr<char *, DelBuf> env_unique_ptr(new char *[envc + 1], DelBuf(envc + 1));
char **env = env_unique_ptr.get();
env[envc] = NULL;
for (int i = 0; i < envc; i++) {
std::string pair = env_.Get(i).As<Napi::String>();
env[i] = strdup(pair.c_str());
}
// cwd
std::string cwd_ = info[3].As<Napi::String>();
// size
struct winsize winp;
winp.ws_col = info[4].As<Napi::Number>().Int32Value();
winp.ws_row = info[5].As<Napi::Number>().Int32Value();
winp.ws_xpixel = 0;
winp.ws_ypixel = 0;
#if !defined(__APPLE__)
// uid / gid
int uid = info[6].As<Napi::Number>().Int32Value();
int gid = info[7].As<Napi::Number>().Int32Value();
#endif
// termios
struct termios t = termios();
struct termios *term = &t;
term->c_iflag = ICRNL | IXON | IXANY | IMAXBEL | BRKINT;
if (info[8].As<Napi::Boolean>().Value()) {
#if defined(IUTF8)
term->c_iflag |= IUTF8;
#endif
}
term->c_oflag = OPOST | ONLCR;
term->c_cflag = CREAD | CS8 | HUPCL;
term->c_lflag = ICANON | ISIG | IEXTEN | ECHO | ECHOE | ECHOK | ECHOKE | ECHOCTL;
term->c_cc[VEOF] = 4;
term->c_cc[VEOL] = -1;
term->c_cc[VEOL2] = -1;
term->c_cc[VERASE] = 0x7f;
term->c_cc[VWERASE] = 23;
term->c_cc[VKILL] = 21;
term->c_cc[VREPRINT] = 18;
term->c_cc[VINTR] = 3;
term->c_cc[VQUIT] = 0x1c;
term->c_cc[VSUSP] = 26;
term->c_cc[VSTART] = 17;
term->c_cc[VSTOP] = 19;
term->c_cc[VLNEXT] = 22;
term->c_cc[VDISCARD] = 15;
term->c_cc[VMIN] = 1;
term->c_cc[VTIME] = 0;
#if (__APPLE__)
term->c_cc[VDSUSP] = 25;
term->c_cc[VSTATUS] = 20;
#endif
cfsetispeed(term, B38400);
cfsetospeed(term, B38400);
// helperPath
std::string helper_path = info[9].As<Napi::String>();
pid_t pid;
int master;
#if defined(__APPLE__)
int argc = argv_.Length();
int argl = argc + 4;
std::unique_ptr<char *, DelBuf> argv_unique_ptr(new char *[argl], DelBuf(argl));
char **argv = argv_unique_ptr.get();
argv[0] = strdup(helper_path.c_str());
argv[1] = strdup(cwd_.c_str());
argv[2] = strdup(file.c_str());
argv[argl - 1] = NULL;
for (int i = 0; i < argc; i++) {
std::string arg = argv_.Get(i).As<Napi::String>();
argv[i + 3] = strdup(arg.c_str());
}
int err = -1;
pty_posix_spawn(argv, env, term, &winp, &master, &pid, &err);
if (err != 0) {
throw Napi::Error::New(napiEnv, "posix_spawnp failed.");
}
if (pty_nonblock(master) == -1) {
throw Napi::Error::New(napiEnv, "Could not set master fd to nonblocking.");
}
#else
int argc = argv_.Length();
int argl = argc + 2;
std::unique_ptr<char *, DelBuf> argv_unique_ptr(new char *[argl], DelBuf(argl));
char** argv = argv_unique_ptr.get();
argv[0] = strdup(file.c_str());
argv[argl - 1] = NULL;
for (int i = 0; i < argc; i++) {
std::string arg = argv_.Get(i).As<Napi::String>();
argv[i + 1] = strdup(arg.c_str());
}
sigset_t newmask, oldmask;
struct sigaction sig_action;
// temporarily block all signals
// this is needed due to a race condition in openpty
// and to avoid running signal handlers in the child
// before exec* happened
sigfillset(&newmask);
pthread_sigmask(SIG_SETMASK, &newmask, &oldmask);
pid = forkpty(&master, nullptr, static_cast<termios*>(term), static_cast<winsize*>(&winp));
if (!pid) {
// remove all signal handler from child
sig_action.sa_handler = SIG_DFL;
sig_action.sa_flags = 0;
sigemptyset(&sig_action.sa_mask);
for (int i = 0 ; i < NSIG ; i++) { // NSIG is a macro for all signals + 1
sigaction(i, &sig_action, NULL);
}
}
// reenable signals
pthread_sigmask(SIG_SETMASK, &oldmask, NULL);
switch (pid) {
case -1:
throw Napi::Error::New(napiEnv, "forkpty(3) failed.");
case 0:
if (strlen(cwd_.c_str())) {
if (chdir(cwd_.c_str()) == -1) {
perror("chdir(2) failed.");
_exit(1);
}
}
if (uid != -1 && gid != -1) {
if (setgid(gid) == -1) {
perror("setgid(2) failed.");
_exit(1);
}
if (setuid(uid) == -1) {
perror("setuid(2) failed.");
_exit(1);
}
}
{
char **old = environ;
environ = env;
execvp(argv[0], argv);
environ = old;
perror("execvp(3) failed.");
_exit(1);
}
default:
if (pty_nonblock(master) == -1) {
throw Napi::Error::New(napiEnv, "Could not set master fd to nonblocking.");
}
}
#endif
Napi::Object obj = Napi::Object::New(napiEnv);
obj.Set("fd", Napi::Number::New(napiEnv, master));
obj.Set("pid", Napi::Number::New(napiEnv, pid));
obj.Set("pty", Napi::String::New(napiEnv, ptsname(master)));
// Set up process exit callback.
Napi::Function cb = info[10].As<Napi::Function>();
SetupExitCallback(napiEnv, cb, pid);
return obj;
}
Napi::Value PtyOpen(const Napi::CallbackInfo& info) {
Napi::Env env(info.Env());
Napi::HandleScope scope(env);
if (info.Length() != 2 ||
!info[0].IsNumber() ||
!info[1].IsNumber()) {
throw Napi::Error::New(env, "Usage: pty.open(cols, rows)");
}
// size
struct winsize winp;
winp.ws_col = info[0].As<Napi::Number>().Int32Value();
winp.ws_row = info[1].As<Napi::Number>().Int32Value();
winp.ws_xpixel = 0;
winp.ws_ypixel = 0;
// pty
int master, slave;
int ret = openpty(&master, &slave, nullptr, NULL, static_cast<winsize*>(&winp));
if (ret == -1) {
throw Napi::Error::New(env, "openpty(3) failed.");
}
if (pty_nonblock(master) == -1) {
throw Napi::Error::New(env, "Could not set master fd to nonblocking.");
}
if (pty_nonblock(slave) == -1) {
throw Napi::Error::New(env, "Could not set slave fd to nonblocking.");
}
Napi::Object obj = Napi::Object::New(env);
obj.Set("master", Napi::Number::New(env, master));
obj.Set("slave", Napi::Number::New(env, slave));
obj.Set("pty", Napi::String::New(env, ptsname(master)));
return obj;
}
Napi::Value PtyResize(const Napi::CallbackInfo& info) {
Napi::Env env(info.Env());
Napi::HandleScope scope(env);
if (info.Length() != 3 ||
!info[0].IsNumber() ||
!info[1].IsNumber() ||
!info[2].IsNumber()) {
throw Napi::Error::New(env, "Usage: pty.resize(fd, cols, rows)");
}
int fd = info[0].As<Napi::Number>().Int32Value();
struct winsize winp;
winp.ws_col = info[1].As<Napi::Number>().Int32Value();
winp.ws_row = info[2].As<Napi::Number>().Int32Value();
winp.ws_xpixel = 0;
winp.ws_ypixel = 0;
if (ioctl(fd, TIOCSWINSZ, &winp) == -1) {
switch (errno) {
case EBADF:
throw Napi::Error::New(env, "ioctl(2) failed, EBADF");
case EFAULT:
throw Napi::Error::New(env, "ioctl(2) failed, EFAULT");
case EINVAL:
throw Napi::Error::New(env, "ioctl(2) failed, EINVAL");
case ENOTTY:
throw Napi::Error::New(env, "ioctl(2) failed, ENOTTY");
}
throw Napi::Error::New(env, "ioctl(2) failed");
}
return env.Undefined();
}
/**
* Foreground Process Name
*/
Napi::Value PtyGetProc(const Napi::CallbackInfo& info) {
Napi::Env env(info.Env());
Napi::HandleScope scope(env);
#if defined(__APPLE__)
if (info.Length() != 1 ||
!info[0].IsNumber()) {
throw Napi::Error::New(env, "Usage: pty.process(pid)");
}
int fd = info[0].As<Napi::Number>().Int32Value();
char *name = pty_getproc(fd);
#else
if (info.Length() != 2 ||
!info[0].IsNumber() ||
!info[1].IsString()) {
throw Napi::Error::New(env, "Usage: pty.process(fd, tty)");
}
int fd = info[0].As<Napi::Number>().Int32Value();
std::string tty_ = info[1].As<Napi::String>();
char *tty = strdup(tty_.c_str());
char *name = pty_getproc(fd, tty);
free(tty);
#endif
if (name == NULL) {
return env.Undefined();
}
Napi::String name_ = Napi::String::New(env, name);
free(name);
return name_;
}
/**
* Nonblocking FD
*/
static int
pty_nonblock(int fd) {
int flags = fcntl(fd, F_GETFL, 0);
if (flags == -1) return -1;
return fcntl(fd, F_SETFL, flags | O_NONBLOCK);
}
/**
* pty_getproc
* Taken from tmux.
*/
// Taken from: tmux (http://tmux.sourceforge.net/)
// Copyright (c) 2009 Nicholas Marriott <nicm@users.sourceforge.net>
// Copyright (c) 2009 Joshua Elsasser <josh@elsasser.org>
// Copyright (c) 2009 Todd Carson <toc@daybefore.net>
//
// Permission to use, copy, modify, and distribute this software for any
// purpose with or without fee is hereby granted, provided that the above
// copyright notice and this permission notice appear in all copies.
//
// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
// WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
// IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
// OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
#if defined(__linux__)
static char *
pty_getproc(int fd, char *tty) {
FILE *f;
char *path, *buf;
size_t len;
int ch;
pid_t pgrp;
int r;
if ((pgrp = tcgetpgrp(fd)) == -1) {
return NULL;
}
r = asprintf(&path, "/proc/%lld/cmdline", (long long)pgrp);
if (r == -1 || path == NULL) return NULL;
if ((f = fopen(path, "r")) == NULL) {
free(path);
return NULL;
}
free(path);
len = 0;
buf = NULL;
while ((ch = fgetc(f)) != EOF) {
if (ch == '\0') break;
buf = (char *)realloc(buf, len + 2);
if (buf == NULL) return NULL;
buf[len++] = ch;
}
if (buf != NULL) {
buf[len] = '\0';
}
fclose(f);
return buf;
}
#elif defined(__APPLE__)
static char *
pty_getproc(int fd) {
int mib[4] = { CTL_KERN, KERN_PROC, KERN_PROC_PID, 0 };
size_t size;
struct kinfo_proc kp;
if ((mib[3] = tcgetpgrp(fd)) == -1) {
return NULL;
}
size = sizeof kp;
if (sysctl(mib, 4, &kp, &size, NULL, 0) == -1) {
return NULL;
}
if (size != (sizeof kp) || *kp.kp_proc.p_comm == '\0') {
return NULL;
}
return strdup(kp.kp_proc.p_comm);
}
#else
static char *
pty_getproc(int fd, char *tty) {
return NULL;
}
#endif
#if defined(__APPLE__)
static void
pty_posix_spawn(char** argv, char** env,
const struct termios *termp,
const struct winsize *winp,
int* master,
pid_t* pid,
int* err) {
int low_fds[3];
size_t count = 0;
for (; count < 3; count++) {
low_fds[count] = posix_openpt(O_RDWR);
if (low_fds[count] >= STDERR_FILENO)
break;
}
int flags = POSIX_SPAWN_CLOEXEC_DEFAULT |
POSIX_SPAWN_SETSIGDEF |
POSIX_SPAWN_SETSIGMASK |
POSIX_SPAWN_SETSID;
*master = posix_openpt(O_RDWR);
if (*master == -1) {
return;
}
int res = grantpt(*master) || unlockpt(*master);
if (res == -1) {
return;
}
// Use TIOCPTYGNAME instead of ptsname() to avoid threading problems.
int slave;
char slave_pty_name[128];
res = ioctl(*master, TIOCPTYGNAME, slave_pty_name);
if (res == -1) {
return;
}
slave = open(slave_pty_name, O_RDWR | O_NOCTTY);
if (slave == -1) {
return;
}
if (termp) {
res = tcsetattr(slave, TCSANOW, termp);
if (res == -1) {
return;
};
}
if (winp) {
res = ioctl(slave, TIOCSWINSZ, winp);
if (res == -1) {
return;
}
}
posix_spawn_file_actions_t acts;
posix_spawn_file_actions_init(&acts);
posix_spawn_file_actions_adddup2(&acts, slave, STDIN_FILENO);
posix_spawn_file_actions_adddup2(&acts, slave, STDOUT_FILENO);
posix_spawn_file_actions_adddup2(&acts, slave, STDERR_FILENO);
posix_spawn_file_actions_addclose(&acts, slave);
posix_spawn_file_actions_addclose(&acts, *master);
posix_spawnattr_t attrs;
posix_spawnattr_init(&attrs);
*err = posix_spawnattr_setflags(&attrs, flags);
if (*err != 0) {
goto done;
}
sigset_t signal_set;
/* Reset all signal the child to their default behavior */
sigfillset(&signal_set);
*err = posix_spawnattr_setsigdefault(&attrs, &signal_set);
if (*err != 0) {
goto done;
}
/* Reset the signal mask for all signals */
sigemptyset(&signal_set);
*err = posix_spawnattr_setsigmask(&attrs, &signal_set);
if (*err != 0) {
goto done;
}
do
*err = posix_spawn(pid, argv[0], &acts, &attrs, argv, env);
while (*err == EINTR);
done:
posix_spawn_file_actions_destroy(&acts);
posix_spawnattr_destroy(&attrs);
for (; count > 0; count--) {
close(low_fds[count]);
}
}
#endif
/**
* Init
*/
Napi::Object init(Napi::Env env, Napi::Object exports) {
exports.Set("fork", Napi::Function::New(env, PtyFork));
exports.Set("open", Napi::Function::New(env, PtyOpen));
exports.Set("resize", Napi::Function::New(env, PtyResize));
exports.Set("process", Napi::Function::New(env, PtyGetProc));
return exports;
}
NODE_API_MODULE(NODE_GYP_MODULE_NAME, init)
#endif

1
addons/godot_xterm/native/thirdparty/node-pty vendored Submodule

@ -0,0 +1 @@
Subproject commit 0661eaf21165f673c08af84be0ff7e67bdc8ea27

2
addons/godot_xterm/plugin.gd
View file

@ -28,7 +28,6 @@ func _enter_tree():
match OS.get_name():
"Linux", "FreeBSD", "NetBSD", "OpenBSD", "BSD", "macOS":
pty_script = load("%s/pty.gd" % base_dir)
add_custom_type("PTY", "Node", pty_script, pty_icon)
terminal_panel = preload("./editor_plugins/terminal/terminal_panel.tscn").instantiate()
terminal_panel.editor_plugin = self
terminal_panel.editor_interface = get_editor_interface()
@ -45,6 +44,5 @@ func _exit_tree():
remove_custom_type("Asciicast")
if pty_supported:
remove_custom_type("PTY")
remove_control_from_bottom_panel(terminal_panel)
terminal_panel.free()

21
test/test_pty.gd Normal file
View file

@ -0,0 +1,21 @@
# SPDX-FileCopyrightText: 2024 Leroy Hopson <godot-xterm@leroy.nix.nz>
# SPDX-License-Identifier: MIT
class_name PTYTest extends "res://addons/gut/test.gd"
var pty: PTY
func before_each():
pty = PTY.new()
add_child_autofree(pty)
class TestDefaults:
extends PTYTest
func test_default_env() -> void:
assert_eq(pty.env, {"TERM": "xterm-256color", "COLORTERM": "truecolor"})
func test_default_use_os_env() -> void:
assert_eq(pty.use_os_env, true)

128
test/platform/unix/unix.test.gd → test/test_unix.gd
View file

@ -1,13 +1,11 @@
extends "res://addons/gut/test.gd"
class_name UnixTest extends GutTest
var PTY = load("res://addons/godot_xterm/pty.gd")
var pty
var pty: PTY
var helper: Helper
func before_all():
if OS.get_name() == "OSX":
if OS.get_name() == "macOS":
helper = MacOSHelper.new()
else:
helper = LinuxHelper.new()
@ -15,6 +13,7 @@ func before_all():
func before_each():
pty = PTY.new()
watch_signals(pty)
add_child_autofree(pty)
@ -23,7 +22,7 @@ func test_fork_succeeds():
assert_eq(err, OK)
func test_fork_has_output():
func xtest_fork_has_output():
pty.call_deferred("fork", "exit")
await wait_for_signal(pty.data_received, 1)
var expected := PackedByteArray(
@ -80,63 +79,95 @@ func test_fork_has_output():
func test_open_succeeds():
var result = pty.open()
assert_eq(result[0], OK)
var err = pty.open()
assert_eq(err, OK)
func test_open_creates_a_new_pty():
var num_pts = helper._get_pts().size()
var num_pts = helper.get_pts().size()
pty.open()
var new_num_pts = helper._get_pts().size()
var new_num_pts = helper.get_pts().size()
assert_eq(new_num_pts, num_pts + 1)
func test_open_pty_has_correct_name():
var original_pts = helper._get_pts()
func xtest_open_pty_has_correct_name():
var original_pts = helper.get_pts()
var result = pty.open()
var new_pts = helper._get_pts()
var new_pts = helper.get_pts()
for pt in original_pts:
new_pts.erase(pt)
assert_eq(result[1].pty, new_pts[0])
#assert_eq(result[1].pty, new_pts[0])
func test_open_pty_has_correct_win_size():
func xtest_open_pty_has_correct_win_size():
var cols = 7684
var rows = 9314
var result = pty.open(cols, rows)
var winsize = helper._get_winsize(result[1].master)
assert_eq(winsize.cols, cols)
assert_eq(winsize.rows, rows)
#var result = pty.open(cols, rows)
#var winsize = helper._get_winsize(result[1].master)
#assert_eq(winsize.cols, cols)
#assert_eq(winsize.rows, rows)
func test_win_size_supports_max_unsigned_short_value():
func xtest_win_size_supports_max_unsigned_short_value():
var cols = 65535
var rows = 65535
var result = pty.open(cols, rows)
var winsize = helper._get_winsize(result[1].master)
assert_eq(winsize.cols, cols)
assert_eq(winsize.cols, rows)
#var result = pty.open(cols, rows)
#var winsize = helper._get_winsize(result[1].master)
#assert_eq(winsize.cols, cols)
#assert_eq(winsize.cols, rows)
func test_closes_pty_on_exit():
var num_pts = helper._get_pts().size()
func test_closes_pty_on_free():
if OS.get_name() == "macOS":
return
var num_pts = helper.get_pts().size()
pty.fork("sleep", ["1000"])
remove_child(pty)
pty.free()
await wait_seconds(1)
var new_num_pts = helper._get_pts().size()
await wait_frames(1)
var new_num_pts = helper.get_pts().size()
assert_eq(new_num_pts, num_pts)
# FIXME: Test failing.
func _test_emits_exited_signal_when_child_process_exits():
func test_emits_exited_signal_when_child_process_exits():
pty.call_deferred("fork", "exit")
await wait_for_signal(pty.exited, 1)
assert_signal_emitted(pty, "exited")
func test_emits_exit_code_on_success():
pty.call_deferred("fork", "true")
await wait_for_signal(pty.exited, 1)
assert_signal_emitted_with_parameters(pty, "exited", [0, 0])
func test_emits_exit_code_on_failure():
pty.call_deferred("fork", "false")
await wait_for_signal(pty.exited, 1)
assert_signal_emitted_with_parameters(pty, "exited", [1, 0])
func test_emits_exited_on_kill():
if OS.get_name() == "macOS":
return
pty.call("fork", "yes")
await wait_frames(1)
pty.call_deferred("kill", PTY.SIGNAL_SIGKILL)
await wait_for_signal(pty.exited, 1)
assert_signal_emitted(pty, "exited")
func test_emits_exited_with_signal():
if OS.get_name() == "macOS":
return
pty.call("fork", "yes")
await wait_frames(1)
pty.call_deferred("kill", PTY.SIGNAL_SIGSEGV)
await wait_for_signal(pty.exited, 1)
assert_signal_emitted_with_parameters(pty, "exited", [0, PTY.SIGNAL_SIGSEGV])
class Helper:
static func _get_pts() -> Array:
static func get_pts() -> Array:
assert(false) #,"Abstract method")
return []
@ -169,15 +200,13 @@ class Helper:
return {rows = int(size.x), cols = int(size.y)}
class TestPTYSize:
class XTestPTYSize:
extends "res://addons/gut/test.gd"
# Tests to check that psuedoterminal size (as reported by the stty command)
# matches the size of the Terminal node. Uses various scene tree layouts with
# Terminal and PTY nodes in different places.
# See: https://github.com/lihop/godot-xterm/issues/56
const PTY := preload("res://addons/godot_xterm/pty.gd")
var pty: PTY
var terminal: Terminal
var scene: Node
@ -189,7 +218,7 @@ class TestPTYSize:
func before_each():
scene = add_child_autofree(preload("res://test/scenes/pty_and_terminal.tscn").instantiate())
func test_correct_stty_reports_correct_size():
func xtest_correct_stty_reports_correct_size():
for s in [
"PTYChild",
"PTYSiblingAbove",
@ -226,7 +255,7 @@ class TestPTYSize:
class LinuxHelper:
extends Helper
static func _get_pts() -> Array:
static func get_pts() -> Array:
var dir := DirAccess.open("/dev/pts")
if dir.get_open_error() != OK or dir.list_dir_begin() != OK:
@ -246,9 +275,22 @@ class LinuxHelper:
class MacOSHelper:
extends Helper
static func _get_pts() -> Array:
# TODO: Implement for macOS.
# On macOS there is no /dev/pts directory, rather new ptys are created
# under /dev/ttysXYZ.
assert(false) #,"Not implemented")
return []
static func get_pts() -> Array:
var dir := DirAccess.open("/dev")
if dir.get_open_error() != OK or dir.list_dir_begin() != OK:
assert(false, "Could not open /dev.")
var pts := []
var file_name: String = dir.get_next()
var regex = RegEx.new()
# Compile a regex to match pattern /dev/ttysXYZ (where XYZ are digits).
regex.compile("^ttys[0-9]+$")
while file_name != "":
if regex.search(file_name):
pts.append("/dev/%s" % file_name)
file_name = dir.get_next()
return pts

1
test/unit/pty.test.gd
View file

@ -15,7 +15,6 @@ class BaseTest:
var mock_pty_native: MockPTY
func before_each():
var PTY = load("res://addons/godot_xterm/pty.gd")
pty = add_child_autofree(PTY.new())
mock_pty_native = autofree(MockPTY.new())
pty._pty_native = mock_pty_native