Refactor anti-injector process result handling

Introduced a ProcessResult enum to standardize anti-injector message processing outcomes. Updated anti_injector.py to return ProcessResult values instead of booleans, and refactored bot.py to handle these results with improved logging and clearer control flow. This change improves code clarity and maintainability for anti-prompt injection logic.

src/chat/antipromptinjector/anti_injector.py

@@ -19,7 +19,7 @@ import datetime
 from src.common.logger import get_logger
 from src.config.config import global_config
 from src.chat.message_receive.message import MessageRecv
-from .config import DetectionResult
+from .config import DetectionResult, ProcessResult
 from .detector import PromptInjectionDetector
 from .shield import MessageShield
 
@@ -38,9 +38,6 @@ class AntiPromptInjector:
         self.detector = PromptInjectionDetector()
         self.shield = MessageShield()
         
-        logger.info(f"反注入系统已初始化 - 模式: {self.config.process_mode}, "
-                   f"规则检测: {self.config.enabled_rules}, LLM检测: {self.config.enabled_LLM}")
-    
     async def _get_or_create_stats(self):
         """获取或创建统计记录"""
         try:
@@ -95,15 +92,15 @@ class AntiPromptInjector:
         except Exception as e:
             logger.error(f"更新统计数据失败: {e}")
     
-    async def process_message(self, message: MessageRecv) -> Tuple[bool, Optional[str], Optional[str]]:
+    async def process_message(self, message: MessageRecv) -> Tuple[ProcessResult, Optional[str], Optional[str]]:
         """处理消息并返回结果
         
         Args:
             message: 接收到的消息对象
             
         Returns:
-            Tuple[bool, Optional[str], Optional[str]]: 
-            - 是否允许继续处理消息
+            Tuple[ProcessResult, Optional[str], Optional[str]]: 
+            - 处理结果状态枚举
             - 处理后的消息内容（如果有修改）
             - 处理结果说明
         """
@@ -115,7 +112,7 @@ class AntiPromptInjector:
             
             # 1. 检查系统是否启用
             if not self.config.enabled:
-                return True, None, "反注入系统未启用"
+                return ProcessResult.ALLOWED, None, "反注入系统未启用"
             
             # 2. 检查用户是否被封禁
             if self.config.auto_ban_enabled:
@@ -123,12 +120,12 @@ class AntiPromptInjector:
                 platform = message.message_info.platform
                 ban_result = await self._check_user_ban(user_id, platform)
                 if ban_result is not None:
-                    return ban_result
+                    return ProcessResult.BLOCKED_BAN, None, ban_result[2]
             
             # 3. 用户白名单检测
             whitelist_result = self._check_whitelist(message)
             if whitelist_result is not None:
-                return whitelist_result
+                return ProcessResult.ALLOWED, None, whitelist_result[2]
             
             # 4. 内容检测
             detection_result = await self.detector.detect(message.processed_plain_text)
@@ -147,7 +144,7 @@ class AntiPromptInjector:
                 if self.config.process_mode == "strict":
                     # 严格模式：直接拒绝
                     await self._update_stats(blocked_messages=1)
-                    return False, None, f"检测到提示词注入攻击，消息已拒绝 (置信度: {detection_result.confidence:.2f})"
+                    return ProcessResult.BLOCKED_INJECTION, None, f"检测到提示词注入攻击，消息已拒绝 (置信度: {detection_result.confidence:.2f})"
                 
                 elif self.config.process_mode == "lenient":
                     # 宽松模式：加盾处理
@@ -162,20 +159,20 @@ class AntiPromptInjector:
                         
                         summary = self.shield.create_safety_summary(detection_result.confidence, detection_result.matched_patterns)
                         
-                        return True, shielded_content, f"检测到可疑内容已加盾处理: {summary}"
+                        return ProcessResult.SHIELDED, shielded_content, f"检测到可疑内容已加盾处理: {summary}"
                     else:
                         # 置信度不高，允许通过
-                        return True, None, "检测到轻微可疑内容，已允许通过"
+                        return ProcessResult.ALLOWED, None, "检测到轻微可疑内容，已允许通过"
             
             # 6. 正常消息
-            return True, None, "消息检查通过"
+            return ProcessResult.ALLOWED, None, "消息检查通过"
             
         except Exception as e:
             logger.error(f"反注入处理异常: {e}", exc_info=True)
             await self._update_stats(error_count=1)
             
             # 异常情况下直接阻止消息
-            return False, None, f"反注入系统异常，消息已阻止: {str(e)}"
+            return ProcessResult.BLOCKED_INJECTION, None, f"反注入系统异常，消息已阻止: {str(e)}"
             
         finally:
             # 更新处理时间统计

src/chat/antipromptinjector/config.py

@@ -9,6 +9,15 @@
 import time
 from typing import List, Optional
 from dataclasses import dataclass, field
+from enum import Enum
+
+
+class ProcessResult(Enum):
+    """处理结果枚举"""
+    ALLOWED = "allowed"           # 允许通过
+    BLOCKED_INJECTION = "blocked_injection"  # 被阻止-注入攻击
+    BLOCKED_BAN = "blocked_ban"   # 被阻止-用户封禁
+    SHIELDED = "shielded"         # 已加盾处理
 
 
 @dataclass