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import asyncio
import locale
import os
import shutil
import subprocess
import sys
from dataclasses import dataclass
from typing import Any
from astrbot.api import logger
from astrbot.core.utils.astrbot_path import (
get_astrbot_data_path,
get_astrbot_root,
get_astrbot_temp_path,
)
from ..olayer import FileSystemComponent, PythonComponent, ShellComponent
from .base import ComputerBooter
_BLOCKED_COMMAND_PATTERNS = [
" rm -rf ",
" rm -fr ",
" rm -r ",
" mkfs",
" dd if=",
" shutdown",
" reboot",
" poweroff",
" halt",
" sudo ",
":(){:|:&};:",
" kill -9 ",
" killall ",
]
def _is_safe_command(command: str) -> bool:
cmd = f" {command.strip().lower()} "
return not any(pat in cmd for pat in _BLOCKED_COMMAND_PATTERNS)
def _ensure_safe_path(path: str) -> str:
abs_path = os.path.abspath(path)
allowed_roots = [
os.path.abspath(get_astrbot_root()),
os.path.abspath(get_astrbot_data_path()),
os.path.abspath(get_astrbot_temp_path()),
]
if not any(abs_path.startswith(root) for root in allowed_roots):
raise PermissionError("Path is outside the allowed computer roots.")
return abs_path
def _decode_shell_output(output: bytes | None) -> str:
if output is None:
return ""
preferred = locale.getpreferredencoding(False) or "utf-8"
try:
return output.decode("utf-8")
except (LookupError, UnicodeDecodeError):
pass
if os.name == "nt":
for encoding in ("mbcs", "cp936", "gbk", "gb18030"):
try:
return output.decode(encoding)
except (LookupError, UnicodeDecodeError):
continue
try:
return output.decode(preferred)
except (LookupError, UnicodeDecodeError):
pass
return output.decode("utf-8", errors="replace")
@dataclass
class LocalShellComponent(ShellComponent):
async def exec(
self,
command: str,
cwd: str | None = None,
env: dict[str, str] | None = None,
timeout: int | None = 30,
shell: bool = True,
background: bool = False,
) -> dict[str, Any]:
if not _is_safe_command(command):
raise PermissionError("Blocked unsafe shell command.")
def _run() -> dict[str, Any]:
run_env = os.environ.copy()
if env:
run_env.update({str(k): str(v) for k, v in env.items()})
working_dir = _ensure_safe_path(cwd) if cwd else get_astrbot_root()
if background:
# `command` is intentionally executed through the current shell so
# local computer-use behavior matches existing tool semantics.
# Safety relies on `_is_safe_command()` and the allowed-root checks.
proc = subprocess.Popen( # noqa: S602 # nosemgrep: python.lang.security.audit.dangerous-subprocess-use-audit
command,
shell=shell,
cwd=working_dir,
env=run_env,
stdout=subprocess.DEVNULL,
stderr=subprocess.DEVNULL,
)
return {"pid": proc.pid, "stdout": "", "stderr": "", "exit_code": None}
# `command` is intentionally executed through the current shell so
# local computer-use behavior matches existing tool semantics.
# Safety relies on `_is_safe_command()` and the allowed-root checks.
result = subprocess.run( # noqa: S602 # nosemgrep: python.lang.security.audit.dangerous-subprocess-use-audit
command,
shell=shell,
cwd=working_dir,
env=run_env,
timeout=timeout,
capture_output=True,
)
return {
"stdout": _decode_shell_output(result.stdout),
"stderr": _decode_shell_output(result.stderr),
"exit_code": result.returncode,
}
return await asyncio.to_thread(_run)
@dataclass
class LocalPythonComponent(PythonComponent):
async def exec(
self,
code: str,
kernel_id: str | None = None,
timeout: int = 30,
silent: bool = False,
) -> dict[str, Any]:
def _run() -> dict[str, Any]:
try:
result = subprocess.run(
[os.environ.get("PYTHON", sys.executable), "-c", code],
timeout=timeout,
capture_output=True,
text=True,
)
stdout = "" if silent else result.stdout
stderr = result.stderr if result.returncode != 0 else ""
return {
"data": {
"output": {"text": stdout, "images": []},
"error": stderr,
}
}
except subprocess.TimeoutExpired:
return {
"data": {
"output": {"text": "", "images": []},
"error": "Execution timed out.",
}
}
return await asyncio.to_thread(_run)
@dataclass
class LocalFileSystemComponent(FileSystemComponent):
async def create_file(
self, path: str, content: str = "", mode: int = 0o644
) -> dict[str, Any]:
def _run() -> dict[str, Any]:
abs_path = _ensure_safe_path(path)
os.makedirs(os.path.dirname(abs_path), exist_ok=True)
with open(abs_path, "w", encoding="utf-8") as f:
f.write(content)
os.chmod(abs_path, mode)
return {"success": True, "path": abs_path}
return await asyncio.to_thread(_run)
async def read_file(self, path: str, encoding: str = "utf-8") -> dict[str, Any]:
def _run() -> dict[str, Any]:
abs_path = _ensure_safe_path(path)
with open(abs_path, encoding=encoding) as f:
content = f.read()
return {"success": True, "content": content}
return await asyncio.to_thread(_run)
async def write_file(
self, path: str, content: str, mode: str = "w", encoding: str = "utf-8"
) -> dict[str, Any]:
def _run() -> dict[str, Any]:
abs_path = _ensure_safe_path(path)
os.makedirs(os.path.dirname(abs_path), exist_ok=True)
with open(abs_path, mode, encoding=encoding) as f:
f.write(content)
return {"success": True, "path": abs_path}
return await asyncio.to_thread(_run)
async def delete_file(self, path: str) -> dict[str, Any]:
def _run() -> dict[str, Any]:
abs_path = _ensure_safe_path(path)
if os.path.isdir(abs_path):
shutil.rmtree(abs_path)
else:
os.remove(abs_path)
return {"success": True, "path": abs_path}
return await asyncio.to_thread(_run)
async def list_dir(
self, path: str = ".", show_hidden: bool = False
) -> dict[str, Any]:
def _run() -> dict[str, Any]:
abs_path = _ensure_safe_path(path)
entries = os.listdir(abs_path)
if not show_hidden:
entries = [e for e in entries if not e.startswith(".")]
return {"success": True, "entries": entries}
return await asyncio.to_thread(_run)
class LocalBooter(ComputerBooter):
def __init__(self) -> None:
self._fs = LocalFileSystemComponent()
self._python = LocalPythonComponent()
self._shell = LocalShellComponent()
async def boot(self, session_id: str) -> None:
logger.info(f"Local computer booter initialized for session: {session_id}")
async def shutdown(self) -> None:
logger.info("Local computer booter shutdown complete.")
@property
def fs(self) -> FileSystemComponent:
return self._fs
@property
def python(self) -> PythonComponent:
return self._python
@property
def shell(self) -> ShellComponent:
return self._shell
async def upload_file(self, path: str, file_name: str) -> dict:
raise NotImplementedError(
"LocalBooter does not support upload_file operation. Use shell instead."
)
async def download_file(self, remote_path: str, local_path: str) -> None:
raise NotImplementedError(
"LocalBooter does not support download_file operation. Use shell instead."
)
async def available(self) -> bool:
return True
|