优化srv模块

modules/srv.py

@@ -0,0 +1,78 @@
+"""
+通过枚举域名常见的SRV记录并做查询来发现子域
+"""
+
+import queue
+import threading
+
+from common import utils
+from common.module import Module
+from config.setting import data_storage_dir
+
+
+class BruteSRV(Module):
+    def __init__(self, domain):
+        Module.__init__(self)
+        self.domain = domain
+        self.module = 'BruteSRV'
+        self.source = "BruteSRV"
+        self.qtype = 'SRV'  # 利用的DNS记录的SRV记录查询子域
+        self.thread_num = 20
+        self.names_queue = queue.Queue()
+        self.answers_queue = queue.Queue()
+
+    def fill_queue(self):
+        path = data_storage_dir.joinpath('srv_prefixes.json')
+        prefixes = utils.load_json(path)
+        for prefix in prefixes:
+            self.names_queue.put(prefix + self.domain)
+
+    def do_brute(self):
+        for num in range(self.thread_num):
+            thread = BruteThread(self.names_queue, self.answers_queue)
+            thread.name = f'BruteThread-{num}'
+            thread.daemon = True
+            thread.start()
+        self.names_queue.join()
+
+    def deal_answers(self):
+        while not self.answers_queue.empty():
+            answer = self.answers_queue.get()
+            if answer is None:
+                continue
+            for item in answer:
+                record = str(item)
+                subdomains = self.match_subdomains(record)
+                self.subdomains.update(subdomains)
+
+    def run(self):
+        """
+        类执行入口
+        """
+        self.begin()
+        self.fill_queue()
+        self.do_brute()
+        self.deal_answers()
+        self.finish()
+        self.save_json()
+        self.gen_result()
+        self.save_db()
+
+
+class BruteThread(threading.Thread):
+    def __init__(self, names_queue, answers_queue):
+        threading.Thread.__init__(self)
+        self.names_queue = names_queue
+        self.answers_queue = answers_queue
+
+    def run(self):
+        while True:
+            name = self.names_queue.get()
+            answer = utils.dns_query(name, 'SRV')
+            self.answers_queue.put(answer)
+            self.names_queue.task_done()
+
+
+if __name__ == '__main__':
+    brute = BruteSRV('zonetransfer.me')
+    brute.run()