mirror of
https://github.com/lihop/godot-xterm.git
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137 lines
3.2 KiB
GDScript
137 lines
3.2 KiB
GDScript
# Derived from https://github.com/microsoft/node-pty/blob/main/src/unixTerminal.ts
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# Copyright (c) 2012-2015, Christopher Jeffrey (MIT License).
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# Copyright (c) 2016, Daniel Imms (MIT License).
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# Copyright (c) 2018, Microsoft Corporation (MIT License).
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# Copyright (c) 2021, Leroy Hopson (MIT License).
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tool
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extends "../pty.gd"
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const PTYUnix = preload("./pty_unix.gdns")
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const FALLBACK_FILE = "sh"
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# Security warning: use this option with great caution, as opened file descriptors
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# with higher privileges might leak to the child program.
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var uid: int
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var gid: int
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var thread: Thread
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var _fd: int = -1
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var _exit_cb: FuncRef
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static func get_uid() -> int:
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return -1 # Not implemented.
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static func get_gid() -> int:
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return -1 # Not implemented.
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func _ready():
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if autostart:
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fork()
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func _resize(cols: int, rows: int) -> void:
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if _fd < 0:
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return
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PTYUnix.new().resize(_fd, cols, rows)
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func _fork_thread(args):
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var result = preload("./pty_unix.gdns").new().callv("fork", args)
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return result
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func fork(
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file: String = OS.get_environment("SHELL"),
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args: PoolStringArray = PoolStringArray(),
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cwd = LibuvUtils.get_cwd(),
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p_cols: int = DEFAULT_COLS,
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p_rows: int = DEFAULT_ROWS,
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uid: int = -1,
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gid: int = -1,
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utf8 = true
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):
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# File.
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if file.empty():
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file = FALLBACK_FILE
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# Environment variables.
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# If we are using OS env vars, sanitize them to remove variables that might confuse our terminal.
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var final_env := _sanitize_env(LibuvUtils.get_os_environ()) if use_os_env else {}
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for key in env.keys():
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final_env[key] = env[key]
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var parsed_env: PoolStringArray = _parse_env(final_env)
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# Exit callback.
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_exit_cb = FuncRef.new()
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_exit_cb.set_instance(self)
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_exit_cb.set_function("_on_exit")
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# Actual fork.
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var result = PTYUnix.new().fork( # VERY IMPORTANT: The must be set null or 0, otherwise will get an ENOTSOCK error after connecting our pipe to the fd.
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file, null, args, parsed_env, cwd, cols, rows, uid, gid, utf8, _exit_cb
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)
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if result[0] != OK:
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push_error("Fork failed.")
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status = STATUS_ERROR
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return FAILED
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_fd = result[1].fd
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if _fd < 0:
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push_error("File descriptor must be a non-negative integer value.")
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status = STATUS_ERROR
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return FAILED
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pid = result[1].pid
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_pipe = Pipe.new()
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_pipe.open(_fd)
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# Must connect to signal AFTER opening, otherwise we will get error ENOTSOCK.
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_pipe.connect("data_received", self, "_on_pipe_data_received")
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return OK
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func open(cols: int = DEFAULT_COLS, rows: int = DEFAULT_ROWS) -> Array:
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return PTYUnix.new().open(cols, rows)
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func _exit_tree():
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_exit_cb = null
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if pid > 1:
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LibuvUtils.kill(pid, Signal.SIGHUP)
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func _on_pipe_data_received(data):
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emit_signal("data_received", data)
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func _on_exit(exit_code: int, signum: int) -> void:
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if is_instance_valid(self):
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pid = -1
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emit_signal("exited", exit_code, signum)
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func _sanitize_env(env: Dictionary) -> Dictionary:
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# Make sure we didn't start our server from inside tmux.
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env.erase("TMUX")
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env.erase("TMUX_PANE")
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# Make sure we didn't start our server from inside screen.
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# http://web.mit.edu/gnu/doc/html/screen_20.html
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env.erase("STY")
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env.erase("WINDOW")
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# Delete some variables that might confuse our terminal.
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env.erase("WINDOWID")
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env.erase("TERMCAP")
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env.erase("COLUMNS")
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env.erase("LINES")
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return env
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