fix: fix hostname error

Author: duanhongyi

setup.py

@@ -25,7 +25,7 @@
 
     name='smartdns',
     description='An Intelligent DNS Similar to DNSPod',
-    version='3.3.6',
+    version='3.3.7',
     author='duanhongyi',
     author_email='duanhyi@gmail.com',
     packages=find_packages(),

smartdns/server.py

@@ -86,13 +86,13 @@ def packResult(value, ttl):
                     add.append(dns.RRHeader('', sdns.EDNS, 4096, 0, sdns.Record_EDNS(None, 0), True))
             return [ret, (), add]
 
-        wildcard = name[name.index("."):]
+        wildcard = name[name.index("."):] if "." in name else None
         if name in self.a_mapping:
             ttl = self.a_mapping[name]['ttl']
             result = self.finder.findIP(str(addr[0]), name)
             random.shuffle(result)  # 返回的IP数组乱序
             return packResult(result, ttl)
-        elif wildcard in self.a_mapping:
+        elif wildcard is not None and wildcard in self.a_mapping:
             ttl = self.a_mapping[wildcard]['ttl']
             result = self.finder.findIP(str(addr[0]), wildcard)
             random.shuffle(result)  # 返回的IP数组乱序