v1.7版本更新

backend/middleware/sanitize.py

@@ -56,6 +56,21 @@ class SanitizeMiddleware(BaseHTTPMiddleware):
         # 去除首尾空格
         value = value.strip()
         
+        # SQL注入模式检测
+        sql_patterns = [
+            r'(?i)(\bunion\b\s+\bselect\b)',
+            r'(?i)(\bor\b\s+\d+\s*=\s*\d+)',
+            r'(?i)(\bdrop\b\s+\btable\b)',
+            r'(?i)(\bdelete\b\s+\bfrom\b)',
+            r'(?i)(\binsert\b\s+\binto\b)',
+            r'(?i)(\bupdate\b\s+\w+\s+\bset\b)',
+        ]
+        for pattern in sql_patterns:
+            value = re.sub(pattern, '', value)
+        
+        # 路径遍历检测
+        value = value.replace('../', '').replace('..\\', '')
+        
         # 限制长度
         if len(value) > 1000:
             value = value[:1000]
@@ -106,7 +121,9 @@ def validate_reason(reason: str) -> tuple:
     """
     if not reason or not reason.strip():
         return False, "原因不能为空"
-    if len(reason) > 255:
+    # 计算可见字符长度（不含换行符），支持多行输入
+    visible_length = len(reason.replace('\n', ''))
+    if visible_length > 255:
         return False, "原因长度不能超过255个字符"
     return True, ""