163 lines
5.5 KiB
Python
163 lines
5.5 KiB
Python
"""
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code_py插件
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输入/code py回车再加上python代码，机器人就会执行代码并返回执行结果。
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"""
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import asyncio
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import re
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import sys
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import tempfile
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import os
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from typing import Tuple, Set
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from core.bot import Bot
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from core.command_manager import matcher
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from models import MessageEvent
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__plugin_meta__ = {
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"name": "code_py",
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"description": "提供执行python代码的功能",
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"usage": "/code_py - 进入交互模式，等待输入代码块\n/code_py [单行代码] - 快速执行单行代码",
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}
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# --- 安全配置：危险模块黑名单 ---
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DANGEROUS_MODULES = [
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"os", "sys", "subprocess", "shutil", "socket", "requests", "urllib",
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"http", "ftplib", "telnetlib", "ctypes", "_thread", "multiprocessing",
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"asyncio",
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]
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# 编译后的正则表达式，用于分割语句
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STATEMENT_SPLIT_PATTERN = re.compile(r'[;\n]')
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def is_code_safe(code: str) -> Tuple[bool, str]:
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"""
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检查代码中是否包含危险的模块导入。
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"""
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statements = STATEMENT_SPLIT_PATTERN.split(code)
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for statement in statements:
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statement = statement.strip()
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if not statement: continue
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parts = statement.split()
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if not parts: continue
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if parts[0] == 'from' and len(parts) > 1:
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module_name = parts[1].strip()
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if module_name in DANGEROUS_MODULES:
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return False, f"检测到不允许的模块导入：'{module_name}'"
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elif parts[0] == 'import' and len(parts) > 1:
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modules_str = ' '.join(parts[1:])
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imported_modules = [m.strip() for m in modules_str.split(',')]
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for module_name in imported_modules:
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actual_module_name = module_name.split()[0]
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if actual_module_name in DANGEROUS_MODULES:
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return False, f"检测到不允许的模块导入：'{actual_module_name}'"
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return True, ""
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async def run_code_in_subprocess(code_str: str, timeout: float = 10.0) -> Tuple[str, str]:
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"""
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在子进程中安全地执行Python代码。
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"""
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with tempfile.NamedTemporaryFile("w", suffix=".py", delete=False, encoding="utf-8") as tf:
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tf.write(code_str)
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tf_path = tf.name
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try:
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proc = await asyncio.create_subprocess_exec(
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sys.executable, tf_path,
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stdout=asyncio.subprocess.PIPE, stderr=asyncio.subprocess.PIPE
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)
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try:
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out_bytes, err_bytes = await asyncio.wait_for(proc.communicate(), timeout=timeout)
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except asyncio.TimeoutError:
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proc.kill()
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await proc.communicate()
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return "", f"执行超时（>{timeout}s）"
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return out_bytes.decode(errors="ignore"), err_bytes.decode(errors="ignore")
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finally:
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try:
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os.remove(tf_path)
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except Exception:
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pass
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async def process_and_reply(bot: Bot, event: MessageEvent, code: str):
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"""
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核心处理逻辑：安全检查、执行代码并回复结果。
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"""
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safe, message = is_code_safe(code)
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if not safe:
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await event.reply(f"代码安全检查未通过：\n{message}")
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return
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try:
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stdout, stderr = await run_code_in_subprocess(code, timeout=10.0)
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except Exception as e:
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await event.reply(f"执行失败：{e}")
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return
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resp = stderr.strip() or stdout.strip() or "(无输出)"
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MAX = 1500
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if len(resp) > MAX:
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resp = resp[:MAX] + "\n...输出被截断..."
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nodes = [
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bot.build_forward_node(user_id=event.self_id, nickname="输入代码", message=code),
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bot.build_forward_node(user_id=event.self_id, nickname="执行结果", message=resp),
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]
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try:
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await bot.send_forwarded_messages(event, nodes)
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except Exception as e:
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await event.reply(f"结果发送失败: {e}\n\n{resp}")
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# --- 交互式会话状态 ---
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# 使用集合存储正在等待代码输入的用户标识
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waiting_users: Set[str] = set()
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def get_session_id(event: MessageEvent) -> str:
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"""根据事件类型生成唯一的会话ID"""
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if hasattr(event, 'group_id'):
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# 群聊会话ID
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return f"group_{event.group_id}-{event.user_id}"
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else:
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# 私聊会话ID
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return f"private_{event.user_id}"
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@matcher.command("code_py")
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async def handle_code_command(bot: Bot, event: MessageEvent, args: list[str]):
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# 模式一：快速执行单行代码
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if args:
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code = " ".join(args)
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await process_and_reply(bot, event, code)
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return
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# 模式二：进入交互模式
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session_id = get_session_id(event)
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if session_id in waiting_users:
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await event.reply("您已经有一个正在等待输入的code会话了，请直接发送代码。")
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return
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waiting_users.add(session_id)
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await event.reply("请在下一条消息中发送要执行的Python代码块。（发送“取消”可退出）")
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@matcher.on_message()
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async def handle_code_input(bot: Bot, event: MessageEvent):
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session_id = get_session_id(event)
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# 检查用户是否处于等待状态
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if session_id in waiting_users:
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# 从等待集合中移除，无论输入是什么
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waiting_users.remove(session_id)
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# 处理取消操作
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if event.raw_message.strip() == "取消":
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await event.reply("已取消输入。")
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return True # 消费事件
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# 执行代码
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await process_and_reply(bot, event, event.raw_message)
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return True # 消费事件，防止被其他指令匹配
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# 如果用户不在等待状态，则不处理
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return False
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