From c2c4441c81033700fbb8ca51c048904a5b183455 Mon Sep 17 00:00:00 2001
From: "d.dobrynin" <d.dobrynin@i-free.com>
Date: Mon, 20 Sep 2021 21:48:54 +0300
Subject: [PATCH] DNS-checker

---
 dns_checker.py | 50 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 50 insertions(+)
 create mode 100755 dns_checker.py

diff --git a/dns_checker.py b/dns_checker.py
new file mode 100755
index 0000000..823c5ec
--- /dev/null
+++ b/dns_checker.py
@@ -0,0 +1,50 @@
+#!/usr/bin/env python
+
+import os
+import argparse
+from prettytable import PrettyTable
+
+TABLE_DNS = PrettyTable()
+TABLE_DNS.hrules = True
+DIG_CMD = 'dig {record} @{ns_server} {_type} +short'
+DEFAULT_DNS_SERVERS = [
+    #добавить список любых DNS-серверов
+]
+
+parser = argparse.ArgumentParser(
+    description="Script for checking DNS records only.")
+
+def get_params():
+
+    parser.add_argument(
+        "-t", "--type",
+        dest="_type",
+        default='',
+        metavar='A',
+        help="Type of record for check, default use A-record ")
+
+    parser.add_argument(
+        "-d", "--dns",
+        dest="record",
+        help="Domain for check",
+        metavar='i-free.com')
+
+    args = parser.parse_args()
+    return args
+
+def main():
+    
+    TABLE_DNS.field_names = ["NS-SERVER", "VALUE"]   
+    params = get_params()
+    record = params.record
+    _type = params._type
+    
+    for ns_server in DEFAULT_DNS_SERVERS:
+        cmd = DIG_CMD.format(record=record, _type=_type, ns_server=ns_server)
+        value = os.popen(cmd).read()
+        TABLE_DNS.add_row([ns_server, value.strip()])
+    
+    print(TABLE_DNS)
+
+if __name__ == '__main__':
+    main()