CSIT-25 DHCPv4 proxy tests

Change-Id: I5aa449d7289fe8d015a32b21c0a368e9693ba757
Signed-off-by: Patrik Hrnciar <phrnciar@cisco.com>

1 files changed, 307 insertions, 0 deletions

diff --git a/resources/traffic_scripts/dhcp/send_dhcp_messages.py b/resources/traffic_scripts/dhcp/send_dhcp_messages.py
new file mode 100755
index 0000000000..7881c24afd
--- /dev/null
+++ b/resources/traffic_scripts/dhcp/send_dhcp_messages.py
@@ -0,0 +1,307 @@
+#!/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 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 dhcp_discover(args):
+    """Send DHCP DISCOVER packet."""
+
+    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 = "0.0.0.0"
+    tx_dst_ip = "255.255.255.255"
+
+    server_ip = args.get_arg('server_ip')
+    proxy_ip = args.get_arg('proxy_ip')
+    client_mac = args.get_arg('client_mac')
+
+    sent_packets = []
+
+    dhcp_discover = Ether(src=client_mac, 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[IP].src != proxy_ip:
+        raise RuntimeError("Source IP address error.")
+    print "Source IP address: OK."
+
+    if ether[IP].dst != server_ip:
+        raise RuntimeError("Destination IP address error.")
+    print "Destination IP address: OK."
+
+    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[1][0] != 'relay_agent_Information':  # option 82
+        raise RuntimeError("Relay agent information error.")
+    option_82 = ether[DHCP].options[1][1]
+
+    if ether[DHCP].options[0][1] != 1:  # 1 - DISCOVER message
+        raise RuntimeError("DHCP DISCOVER message error.")
+    print "DHCP DISCOVER message OK."
+    dhcp_offer(args, option_82)
+
+
+def dhcp_offer(args, option_82):
+    """Send DHCP OFFER packet."""
+
+    rx_if = args.get_arg('tx_if')
+    tx_if = args.get_arg('rx_if')
+
+    rxq = RxQueue(rx_if)
+    txq = TxQueue(tx_if)
+
+    tx_dst_ip = "255.255.255.255"
+    server_ip = args.get_arg('server_ip')
+    server_mac = args.get_arg('server_mac')
+    client_ip = args.get_arg('client_ip')
+    proxy_ip = args.get_arg('proxy_ip')
+
+    sent_packets = []
+
+    dhcp_offer = Ether(src=server_mac, dst="ff:ff:ff:ff:ff:ff") / \
+                 IP(src=server_ip, dst=tx_dst_ip) / \
+                 UDP(sport=67, dport=68) / \
+                 BOOTP(op=2,
+                       yiaddr=client_ip,
+                       siaddr=server_ip) / \
+                 DHCP(options=
+                      [("message-type", "offer"),
+                       ("server_id", server_ip),
+                       ("relay_agent_Information", option_82),
+                       "end"])
+
+    txq.send(dhcp_offer)
+    sent_packets.append(dhcp_offer)
+
+    ether = rxq.recv(2)
+
+    if ether is None:
+        raise RuntimeError('DHCP OFFER timeout')
+
+    if ether[IP].dst != tx_dst_ip:
+        raise RuntimeError("Destination IP address error.")
+    print "Destination IP address: OK."
+
+    if ether[IP].src != proxy_ip:
+        raise RuntimeError("Source IP address error.")
+    print "Source IP address: OK."
+
+    if ether[UDP].dport != UDP_SERVICES.bootpc:
+        raise RuntimeError("UDP destination port error.")
+    print "UDP destination port: OK."
+
+    if ether[UDP].sport != UDP_SERVICES.bootps:
+        raise RuntimeError("UDP source port error.")
+    print "UDP source port: OK."
+
+    if ether[BOOTP].yiaddr != client_ip:
+        raise RuntimeError("Client IP address error.")
+    print "Client IP address: OK."
+
+    if ether[BOOTP].siaddr != server_ip:
+        raise RuntimeError("DHCP server IP address error.")
+    print "DHCP server IP address: OK."
+
+    if ether[DHCP].options[0][1] != 2:  # 2 - OFFER message
+        raise RuntimeError("DHCP OFFER message error.")
+    print "DHCP OFFER message OK."
+    dhcp_request(args)
+
+
+def dhcp_request(args):
+    """Send DHCP REQUEST packet."""
+
+    tx_if = args.get_arg('tx_if')
+    rx_if = args.get_arg('rx_if')
+
+    rxq = RxQueue(rx_if)
+    txq = TxQueue(tx_if)
+
+    tx_dst_ip = "255.255.255.255"
+    server_ip = args.get_arg('server_ip')
+    client_ip = args.get_arg('client_ip')
+    client_mac = args.get_arg('client_mac')
+    proxy_ip = args.get_arg('proxy_ip')
+
+    sent_packets = []
+
+    dhcp_request = Ether(src=client_mac, dst="ff:ff:ff:ff:ff:ff") / \
+                   IP(src="0.0.0.0", dst=tx_dst_ip) / \
+                   UDP(sport=68, dport=67) / \
+                   BOOTP(op=1,
+                         giaddr=proxy_ip,
+                         siaddr=server_ip) / \
+                   DHCP(options=[("message-type", "request"),
+                                 ("server_id", server_ip),
+                                 ("requested_addr", client_ip),
+                                 "end"])
+
+    sent_packets.append(dhcp_request)
+    txq.send(dhcp_request)
+
+    ether = rxq.recv(2)
+
+    if ether is None:
+        raise RuntimeError('DHCP REQUEST timeout')
+
+    if ether[IP].dst != server_ip:
+        raise RuntimeError("Destination IP address error.")
+    print "Destination IP address: OK."
+
+    if ether[IP].src != proxy_ip:
+        raise RuntimeError("Source IP address error.")
+    print "Source IP address: OK."
+
+    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[BOOTP].siaddr != server_ip:
+        raise RuntimeError("DHCP server IP address error.")
+    print "DHCP server IP address: OK."
+
+    if ether[DHCP].options[2][1] != client_ip:
+        raise RuntimeError("Requested IP address error.")
+    print "Requested IP address: OK."
+
+    if ether[DHCP].options[3][0] != 'relay_agent_Information':  # option 82
+        raise RuntimeError("Relay agent information error.")
+    option_82 = ether[DHCP].options[3][1]
+
+    if ether[DHCP].options[0][1] != 3:  # 2 - REQUEST message
+        raise RuntimeError("DHCP REQUEST message error.")
+    print "DHCP REQUEST message: OK."
+    dhcp_ack(args, option_82)
+
+
+def dhcp_ack(args, option_82):
+    """Send DHCP ACK packet."""
+
+    rx_if = args.get_arg('tx_if')
+    tx_if = args.get_arg('rx_if')
+
+    rxq = RxQueue(rx_if)
+    txq = TxQueue(tx_if)
+
+    tx_dst_ip = "255.255.255.255"
+    server_ip = args.get_arg('server_ip')
+    server_mac = args.get_arg('server_mac')
+    client_ip = args.get_arg('client_ip')
+    proxy_ip = args.get_arg('proxy_ip')
+    lease_time = 43200  # 12 hours
+
+    sent_packets = []
+
+    dhcp_ack = Ether(src=server_mac, dst="ff:ff:ff:ff:ff:ff") / \
+               IP(src=server_ip, dst=tx_dst_ip) / \
+               UDP(sport=67, dport=68) / \
+               BOOTP(op=2,
+                     yiaddr=client_ip,
+                     siaddr=server_ip) / \
+               DHCP(options=
+                    [("message-type", "ack"),
+                     ("server_id", server_ip),
+                     ("lease_time", lease_time),
+                     ("relay_agent_Information", option_82),
+                     "end"])
+
+    txq.send(dhcp_ack)
+    sent_packets.append(dhcp_ack)
+
+    ether = rxq.recv(2)
+
+    if ether is None:
+        raise RuntimeError('DHCP ACK timeout')
+
+    if ether[IP].dst != tx_dst_ip:
+        raise RuntimeError("Destination IP address error.")
+    print "Destination IP address: OK."
+
+    if ether[IP].src != proxy_ip:
+        raise RuntimeError("Source IP address error.")
+    print "Source IP address: OK."
+
+    if ether[UDP].dport != UDP_SERVICES.bootpc:
+        raise RuntimeError("UDP destination port error.")
+    print "UDP destination port: OK."
+
+    if ether[UDP].sport != UDP_SERVICES.bootps:
+        raise RuntimeError("UDP source port error.")
+    print "UDP source port: OK."
+
+    if ether[BOOTP].yiaddr != client_ip:
+        raise RuntimeError("Client IP address error.")
+    print "Client IP address: OK."
+
+    if ether[BOOTP].siaddr != server_ip:
+        raise RuntimeError("DHCP server IP address error.")
+    print "DHCP server IP address: OK."
+
+    if ether[DHCP].options[2][1] != lease_time:
+        raise RuntimeError("DHCP lease time error.")
+    print "DHCP lease time OK."
+
+    if ether[DHCP].options[0][1] != 5:  # 5 - ACK message
+        raise RuntimeError("DHCP ACK message error.")
+    print "DHCP ACK message OK."
+
+
+def main():
+    """Send DHCP messages."""
+
+    args = TrafficScriptArg(['server_ip', 'server_mac', 'client_ip',
+                             'client_mac', 'proxy_ip'])
+
+    dhcp_discover(args)
+
+    sys.exit(0)
+
+if __name__ == "__main__":
+    main()