1ba5f0f7d6
- Updated .env.example to include API key placeholder and configuration instructions. - Refactored main.py to support streaming responses from the LLM, improving user experience during chat interactions. - Enhanced LLMClient to include methods for streaming chat and collecting responses. - Modified safety review process to pass static analysis warnings to the LLM for better code safety evaluation. - Improved UI components in chat_view.py to handle streaming messages effectively.
241 lines
8.1 KiB
Python
241 lines
8.1 KiB
Python
"""
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硬规则安全检查器
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只检测最危险的操作，其他交给 LLM 审查
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"""
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import re
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import ast
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from typing import List
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from dataclasses import dataclass
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@dataclass
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class RuleCheckResult:
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"""规则检查结果"""
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passed: bool
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violations: List[str] # 违规项列表
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warnings: List[str] # 警告项（交给 LLM 审查）
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class RuleChecker:
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"""
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硬规则检查器
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只硬性禁止最危险的操作：
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1. 网络模块: socket（底层网络）
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2. 执行任意代码: eval, exec, compile
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3. 执行系统命令: subprocess, os.system, os.popen
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4. 动态导入: __import__
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其他操作（如文件删除、路径访问等）生成警告，交给 LLM 审查
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"""
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# 【硬性禁止】最危险的模块 - 直接拒绝
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CRITICAL_FORBIDDEN_IMPORTS = {
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'socket', # 底层网络，可绑定端口、建立连接
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'subprocess', # 执行任意系统命令
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'multiprocessing', # 可能绑定端口
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'asyncio', # 可能包含网络操作
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'ctypes', # 可调用任意 C 函数
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'cffi', # 外部函数接口
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}
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# 【硬性禁止】最危险的函数调用 - 直接拒绝
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CRITICAL_FORBIDDEN_CALLS = {
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# 执行任意代码
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'eval',
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'exec',
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'compile',
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'__import__',
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# 执行系统命令
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'os.system',
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'os.popen',
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'os.spawn',
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'os.spawnl',
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'os.spawnle',
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'os.spawnlp',
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'os.spawnlpe',
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'os.spawnv',
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'os.spawnve',
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'os.spawnvp',
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'os.spawnvpe',
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'os.execl',
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'os.execle',
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'os.execlp',
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'os.execlpe',
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'os.execv',
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'os.execve',
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'os.execvp',
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'os.execvpe',
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}
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# 【警告】需要 LLM 审查的模块
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WARNING_IMPORTS = {
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'requests', # HTTP 请求
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'urllib', # URL 处理
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'http.client', # HTTP 客户端
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'ftplib', # FTP
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'smtplib', # 邮件
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'telnetlib', # Telnet
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}
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# 【警告】需要 LLM 审查的函数调用
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WARNING_CALLS = {
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'os.remove', # 删除文件
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'os.unlink', # 删除文件
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'os.rmdir', # 删除目录
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'os.removedirs', # 递归删除目录
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'shutil.rmtree', # 递归删除目录树
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'shutil.move', # 移动文件（可能丢失原文件）
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'open', # 打开文件（检查路径）
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}
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def check(self, code: str) -> RuleCheckResult:
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"""
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检查代码是否符合安全规则
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Args:
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code: Python 代码字符串
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Returns:
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RuleCheckResult: 检查结果
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"""
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violations = [] # 硬性违规，直接拒绝
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warnings = [] # 警告，交给 LLM 审查
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# 1. 检查硬性禁止的导入
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critical_import_violations = self._check_critical_imports(code)
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violations.extend(critical_import_violations)
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# 2. 检查硬性禁止的函数调用
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critical_call_violations = self._check_critical_calls(code)
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violations.extend(critical_call_violations)
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# 3. 检查警告级别的导入
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warning_imports = self._check_warning_imports(code)
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warnings.extend(warning_imports)
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# 4. 检查警告级别的函数调用
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warning_calls = self._check_warning_calls(code)
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warnings.extend(warning_calls)
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return RuleCheckResult(
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passed=len(violations) == 0,
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violations=violations,
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warnings=warnings
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)
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def _check_critical_imports(self, code: str) -> List[str]:
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"""检查硬性禁止的导入"""
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violations = []
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try:
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tree = ast.parse(code)
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for node in ast.walk(tree):
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if isinstance(node, ast.Import):
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for alias in node.names:
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module_name = alias.name.split('.')[0]
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if module_name in self.CRITICAL_FORBIDDEN_IMPORTS:
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violations.append(f"严禁使用模块: {alias.name}（可能执行危险操作）")
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elif isinstance(node, ast.ImportFrom):
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if node.module:
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module_name = node.module.split('.')[0]
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if module_name in self.CRITICAL_FORBIDDEN_IMPORTS:
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violations.append(f"严禁使用模块: {node.module}（可能执行危险操作）")
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except SyntaxError:
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for module in self.CRITICAL_FORBIDDEN_IMPORTS:
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pattern = rf'\bimport\s+{re.escape(module)}\b|\bfrom\s+{re.escape(module)}\b'
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if re.search(pattern, code):
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violations.append(f"严禁使用模块: {module}")
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return violations
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def _check_critical_calls(self, code: str) -> List[str]:
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"""检查硬性禁止的函数调用"""
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violations = []
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try:
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tree = ast.parse(code)
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for node in ast.walk(tree):
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if isinstance(node, ast.Call):
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call_name = self._get_call_name(node)
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if call_name in self.CRITICAL_FORBIDDEN_CALLS:
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violations.append(f"严禁调用: {call_name}（可能执行任意代码或命令）")
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except SyntaxError:
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for func in self.CRITICAL_FORBIDDEN_CALLS:
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pattern = rf'\b{re.escape(func)}\s*\('
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if re.search(pattern, code):
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violations.append(f"严禁调用: {func}")
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return violations
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def _check_warning_imports(self, code: str) -> List[str]:
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"""检查警告级别的导入"""
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warnings = []
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try:
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tree = ast.parse(code)
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for node in ast.walk(tree):
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if isinstance(node, ast.Import):
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for alias in node.names:
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module_name = alias.name.split('.')[0]
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if module_name in self.WARNING_IMPORTS or alias.name in self.WARNING_IMPORTS:
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warnings.append(f"使用了网络相关模块: {alias.name}")
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elif isinstance(node, ast.ImportFrom):
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if node.module:
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module_name = node.module.split('.')[0]
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if module_name in self.WARNING_IMPORTS or node.module in self.WARNING_IMPORTS:
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warnings.append(f"使用了网络相关模块: {node.module}")
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except SyntaxError:
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pass
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return warnings
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def _check_warning_calls(self, code: str) -> List[str]:
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"""检查警告级别的函数调用"""
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warnings = []
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try:
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tree = ast.parse(code)
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for node in ast.walk(tree):
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if isinstance(node, ast.Call):
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call_name = self._get_call_name(node)
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if call_name in self.WARNING_CALLS:
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warnings.append(f"使用了敏感操作: {call_name}")
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except SyntaxError:
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pass
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return warnings
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def _get_call_name(self, node: ast.Call) -> str:
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"""获取函数调用的完整名称"""
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if isinstance(node.func, ast.Name):
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return node.func.id
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elif isinstance(node.func, ast.Attribute):
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parts = []
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current = node.func
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while isinstance(current, ast.Attribute):
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parts.append(current.attr)
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current = current.value
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if isinstance(current, ast.Name):
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parts.append(current.id)
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return '.'.join(reversed(parts))
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return ''
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def check_code_safety(code: str) -> RuleCheckResult:
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"""便捷函数：检查代码安全性"""
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checker = RuleChecker()
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return checker.check(code)
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