CSIT-811 HC Test: BGP functional tests

[csit.git] / resources / traffic_scripts / honeycomb / bgp_open.py

diff --git a/resources/traffic_scripts/honeycomb/bgp_open.py b/resources/traffic_scripts/honeycomb/bgp_open.py
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+++ b/resources/traffic_scripts/honeycomb/bgp_open.py
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+#!/usr/bin/env python
+# Copyright (c) 2016 Cisco and/or its affiliates.
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at:
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""Traffic script that listens for incoming BGP connections and verifies
+received GBP Open message."""
+
+import sys
+import socket
+
+from scapy.main import load_contrib
+from scapy.layers.inet import Raw
+from scapy.contrib.bgp import BGPHeader, BGPOpen
+
+from resources.libraries.python.TrafficScriptArg import TrafficScriptArg
+
+
+def main():
+    """Open a TCP listener socket on the default BGP port. Accept an incoming
+    connection, receive data and verify if data is a valid BGP Open message."""
+    args = TrafficScriptArg(['rx_ip', 'src_ip', 'rx_port', 'as_number',
+                             'holdtime'])
+
+    rx_ip = args.get_arg('rx_ip')
+    src_ip = args.get_arg('src_ip')
+    rx_port = int(args.get_arg('rx_port'))
+    as_number = int(args.get_arg('as_number'))
+    holdtime = int(args.get_arg('holdtime'))
+
+    load_contrib("bgp")
+
+    soc = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+    soc.bind((rx_ip, rx_port))
+    soc.listen(1)
+
+    print "Listener active, awaiting connection..."
+    soc.settimeout(8)
+    conn, addr = soc.accept()
+    print 'Connection established with peer:', addr
+
+    data = conn.recv(256)
+    conn.close()
+    soc.close()
+
+    bgp_layer = (BGPHeader(Raw(data).load))
+    bgp_layer.show()
+
+    if not bgp_layer.haslayer(BGPOpen):
+        raise RuntimeError("Received data is not a BGP OPEN message.")
+    bgp_open = bgp_layer.getlayer(BGPOpen)
+    if bgp_open.bgp_id != src_ip:
+        raise RuntimeError(
+            "BGP ID mismatch. Received {0} but should be {1}".
+            format(bgp_open.bgp_id, src_ip))
+    else:
+        print "BGP ID matched."
+
+    if bgp_open.AS != as_number:
+        raise RuntimeError(
+            "BGP AS number mismatch. Received {0} but should be {1}".
+            format(bgp_open.AS, as_number))
+    else:
+        print "BGP AS number matched."
+
+    if bgp_open.hold_time != holdtime:
+        raise RuntimeError(
+            "Hold Time parameter mismatch. Received {0} but should be {1}.".
+            format(bgp_layer.getlayer(BGPOpen).holdtime, holdtime))
+    else:
+        print "BGP Hold Time parameter matched."
+
+    sys.exit(0)
+
+if __name__ == "__main__":
+    main()