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authorPatrik Hrnciar <phrnciar@cisco.com>2016-07-15 08:48:43 +0200
committerDave Wallace <dwallacelf@gmail.com>2016-08-01 14:46:43 +0000
commitec3512ff7f1405f2e7bc74bbfadf5691afc352c4 (patch)
tree79260ea2899e2b02430bdc6b2ed8b02f7cd9c1c5 /resources/traffic_scripts/dhcp/send_dhcp_discover.py
parent8fa8590c30540f53edb02c223a6de616cbe149da (diff)
CSIT-25 DHCPv4 proxy tests
Change-Id: I5aa449d7289fe8d015a32b21c0a368e9693ba757 Signed-off-by: Patrik Hrnciar <phrnciar@cisco.com>
Diffstat (limited to 'resources/traffic_scripts/dhcp/send_dhcp_discover.py')
-rwxr-xr-xresources/traffic_scripts/dhcp/send_dhcp_discover.py74
1 files changed, 74 insertions, 0 deletions
diff --git a/resources/traffic_scripts/dhcp/send_dhcp_discover.py b/resources/traffic_scripts/dhcp/send_dhcp_discover.py
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+++ b/resources/traffic_scripts/dhcp/send_dhcp_discover.py
@@ -0,0 +1,74 @@
+#!/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 sends DHCP DISCOVER packets."""
+
+import sys
+
+from scapy.all import Ether
+from scapy.layers.inet import IP, UDP
+from scapy.layers.inet import UDP_SERVICES
+from scapy.layers.dhcp import DHCP, BOOTP
+
+from resources.libraries.python.PacketVerifier import RxQueue, TxQueue
+from resources.libraries.python.TrafficScriptArg import TrafficScriptArg
+
+
+def main():
+ """Send DHCP DISCOVER packet."""
+
+ args = TrafficScriptArg(['tx_src_ip', 'tx_dst_ip'])
+
+ tx_if = args.get_arg('tx_if')
+ rx_if = args.get_arg('rx_if')
+
+ rxq = RxQueue(rx_if)
+ txq = TxQueue(tx_if)
+
+ tx_src_ip = args.get_arg('tx_src_ip')
+ tx_dst_ip = args.get_arg('tx_dst_ip')
+
+ sent_packets = []
+
+ dhcp_discover = Ether(dst="ff:ff:ff:ff:ff:ff") / \
+ IP(src=tx_src_ip, dst=tx_dst_ip) / \
+ UDP(sport=68, dport=67) / \
+ BOOTP(op=1,) / \
+ DHCP(options=[("message-type", "discover"),
+ "end"])
+
+ sent_packets.append(dhcp_discover)
+ txq.send(dhcp_discover)
+
+ ether = rxq.recv(2)
+
+ if ether is None:
+ raise RuntimeError('DHCP DISCOVER timeout')
+
+ if ether[UDP].dport != UDP_SERVICES.bootps:
+ raise RuntimeError("UDP destination port error.")
+ print "UDP destination port: OK."
+
+ if ether[UDP].sport != UDP_SERVICES.bootpc:
+ raise RuntimeError("UDP source port error.")
+ print "UDP source port: OK."
+
+ if ether[DHCP].options[0][1] != 1: # 1 - DISCOVER message
+ raise RuntimeError("DHCP DISCOVER message error.")
+ print "DHCP DISCOVER message OK."
+
+ sys.exit(0)
+
+if __name__ == "__main__":
+ main()