1 files changed, 330 insertions, 0 deletions
diff --git a/resources/traffic_scripts/dhcp/send_dhcp_v6_messages.py b/resources/traffic_scripts/dhcp/send_dhcp_v6_messages.py
new file mode 100755
index 0000000000..d570a8c8aa
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+++ b/resources/traffic_scripts/dhcp/send_dhcp_v6_messages.py
@@ -0,0 +1,330 @@
+#!/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 DHCPv6 proxy packets."""
+
+from scapy.layers.dhcp6 import *
+from scapy.layers.inet6 import IPv6, UDP, UDP_SERVICES
+
+from resources.libraries.python.PacketVerifier import RxQueue, TxQueue
+from resources.libraries.python.TrafficScriptArg import TrafficScriptArg
+
+
+def _check_udp_checksum(pkt):
+    """Check udp checksum in ip packet.
+    Return true if checksum is correct."""
+    new = pkt.__class__(str(pkt))
+    del new['UDP'].chksum
+    new = new.__class__(str(new))
+    return new['UDP'].chksum == pkt['UDP'].chksum
+
+
+def dhcpv6_solicit(tx_if, rx_if, dhcp_multicast_ip, link_local_ip, proxy_ip,
+                   server_ip, server_mac, client_duid, client_mac):
+    """Send and check DHCPv6 SOLICIT proxy packet.
+
+    :param tx_if: Client interface.
+    :param rx_if: DHCPv6 server interface.
+    :param dhcp_multicast_ip: Servers and relay agents multicast address.
+    :param link_local_ip: Client link-local address.
+    :param proxy_ip: IP address of DHCPv6 proxy server.
+    :param server_ip: IP address of DHCPv6 server.
+    :param server_mac: MAC address of DHCPv6 server.
+    :param client_duid: Client DHCP Unique Identifier.
+    :param client_mac: Client MAC address.
+    :type tx_if: str
+    :type rx_if: str
+    :type dhcp_multicast_ip: str
+    :type link_local_ip: str
+    :type proxy_ip: str
+    :type server_ip: str
+    :type server_mac: str
+    :type client_duid: str
+    :type client_mac: str
+    :return interface_id: ID of proxy interface.
+    :rtype interface_id: str
+    """
+
+    rxq = RxQueue(rx_if)
+    txq = TxQueue(tx_if)
+
+    sent_packets = []
+
+    dhcp6_solicit_pkt = Ether(src=client_mac, dst="33:33:00:01:00:02") / \
+                        IPv6(src=link_local_ip, dst=dhcp_multicast_ip) / \
+                        UDP(sport=UDP_SERVICES.dhcpv6_client,
+                            dport=UDP_SERVICES.dhcpv6_server) / \
+                        DHCP6_Solicit() / \
+                        DHCP6OptClientId(duid=client_duid)
+
+    sent_packets.append(dhcp6_solicit_pkt)
+    txq.send(dhcp6_solicit_pkt)
+
+    ether = rxq.recv(2)
+
+    if ether is None:
+        raise RuntimeError('DHCPv6 SOLICIT timeout')
+
+    if ether.dst != server_mac:
+        raise RuntimeError("Destination MAC address error!")
+    print "Destination MAC address: OK."
+
+    if ether['IPv6'].src != proxy_ip:
+        raise RuntimeError("Source IP address error!")
+    print "Source IP address: OK."
+
+    if ether['IPv6'].dst != server_ip:
+        raise RuntimeError("Destination IP address error!")
+    print "Destination IP address: OK."
+
+    if ether['IPv6']['UDP']\
+        ['DHCPv6 Relay Forward Message (Relay Agent/Server Message)']:
+        print "Relay Agent/Server Message: OK."
+    else:
+        raise RuntimeError("Relay Agent/Server Message error.")
+
+    if ether['IPv6']['UDP']\
+        ['DHCPv6 Relay Forward Message (Relay Agent/Server Message)']\
+        .linkaddr != proxy_ip:
+        raise RuntimeError("Proxy IP address error!")
+    print "Proxy IP address: OK."
+
+    try:
+        interface_id =  ether['IPv6']['UDP']\
+            ['DHCPv6 Relay Forward Message (Relay Agent/Server Message)']\
+            ['Unknown DHCPv6 OPtion']['DHCP6 Interface-Id Option'].ifaceid
+    except Exception:
+        raise RuntimeError("DHCP6 Interface-Id error!")
+
+    return interface_id
+
+
+def dhcpv6_advertise(rx_if, tx_if, link_local_ip, proxy_ip,
+                     server_ip, server_mac, proxy_to_server_mac, interface_id):
+    """Send and check DHCPv6 ADVERTISE proxy packet.
+
+    :param rx_if: DHCPv6 server interface.
+    :param tx_if: Client interface.
+    :param link_local_ip: Client link-local address.
+    :param proxy_ip: IP address of DHCPv6 proxy server.
+    :param server_ip: IP address of DHCPv6 server.
+    :param server_mac: MAC address of DHCPv6 server.
+    :param proxy_to_server_mac: MAC address of DHCPv6 proxy interface.
+    :param interface_id: ID of proxy interface.
+    :type rx_if: str
+    :type tx_if: str
+    :type link_local_ip: str
+    :type proxy_ip: str
+    :type server_ip: str
+    :type server_mac: str
+    :type proxy_to_server_mac: str
+    :type interface_id: str
+    """
+
+    rxq = RxQueue(rx_if)
+    txq = TxQueue(tx_if)
+
+    sent_packets = []
+
+    dhcp6_advertise_pkt = Ether(src=server_mac, dst=proxy_to_server_mac) / \
+                          IPv6(src=server_ip, dst=proxy_ip) / \
+                          UDP(sport=UDP_SERVICES.dhcpv6_server,
+                              dport=UDP_SERVICES.dhcpv6_client) / \
+                          DHCP6_RelayReply(peeraddr=link_local_ip,
+                                           linkaddr=proxy_ip) / \
+                          DHCP6OptIfaceId(ifaceid=interface_id) / \
+                          DHCP6OptRelayMsg() / \
+                          DHCP6_Advertise()
+
+    sent_packets.append(dhcp6_advertise_pkt)
+    txq.send(dhcp6_advertise_pkt)
+
+    ether = rxq.recv(2)
+
+    if ether is None:
+        raise RuntimeError('DHCPv6 ADVERTISE timeout')
+
+    if ether['IPv6'].src != proxy_ip:
+        raise RuntimeError("Source IP address error!")
+    print "Source IP address: OK."
+
+    if not _check_udp_checksum(ether['IPv6']):
+        raise RuntimeError("Checksum error!")
+    print "Checksum: OK."
+
+    if ether['IPv6']['UDP']['Raw'].load != interface_id:
+        raise RuntimeError("Interface ID error!")
+    print "Interface ID: OK."
+
+
+def dhcpv6_request(tx_if, rx_if, dhcp_multicast_ip, link_local_ip, proxy_ip,
+                   server_ip, client_duid, client_mac):
+    """Send and check DHCPv6 REQUEST proxy packet.
+
+    :param tx_if: Client interface.
+    :param rx_if: DHCPv6 server interface.
+    :param dhcp_multicast_ip: Servers and relay agents multicast address.
+    :param link_local_ip: Client link-local address.
+    :param proxy_ip: IP address of DHCPv6 proxy server.
+    :param server_ip: IP address of DHCPv6 server.
+    :param client_duid: Client DHCP Unique Identifier.
+    :param client_mac: Client MAC address.
+    :type tx_if: str
+    :type rx_if: str
+    :type dhcp_multicast_ip: str
+    :type link_local_ip: str
+    :type proxy_ip: str
+    :type server_ip: str
+    :type client_duid: str
+    :type client_mac: str
+    """
+
+    rxq = RxQueue(rx_if)
+    txq = TxQueue(tx_if)
+
+    sent_packets = []
+
+    dhcp6_request_pkt = Ether(src=client_mac, dst="33:33:00:01:00:02") / \
+                        IPv6(src=link_local_ip, dst=dhcp_multicast_ip) / \
+                        UDP(sport=UDP_SERVICES.dhcpv6_client,
+                            dport=UDP_SERVICES.dhcpv6_server) / \
+                        DHCP6_Request() / \
+                        DHCP6OptClientId(duid=client_duid)
+
+    sent_packets.append(dhcp6_request_pkt)
+    txq.send(dhcp6_request_pkt)
+
+    ether = rxq.recv(2)
+
+    if ether is None:
+        raise RuntimeError('DHCPv6 REQUEST timeout')
+
+    if ether['IPv6'].src != proxy_ip:
+        raise RuntimeError("Source IP address error!")
+    print "Source IP address: OK."
+
+    if ether['IPv6'].dst != server_ip:
+        raise RuntimeError("Destination IP address error!")
+    print "Destination IP address: OK."
+
+    if ether['IPv6']['UDP']\
+        ['DHCPv6 Relay Forward Message (Relay Agent/Server Message)']:
+        print "Relay Agent/Server Message: OK."
+    else:
+        raise RuntimeError("Relay Agent/Server Message error.")
+
+    if ether['IPv6']['UDP']\
+            ['DHCPv6 Relay Forward Message (Relay Agent/Server Message)']\
+            .linkaddr != proxy_ip:
+        raise RuntimeError("Proxy IP address error!")
+    print "Proxy IP address: OK."
+
+
+def dhcpv6_reply(rx_if, tx_if, link_local_ip, proxy_ip, server_ip, server_mac,
+                 interface_id):
+    """Send and check DHCPv6 REPLY proxy packet.
+
+    :param rx_if: DHCPv6 server interface.
+    :param tx_if: Client interface.
+    :param link_local_ip: Client link-local address.
+    :param proxy_ip: IP address of DHCPv6 proxy server.
+    :param server_ip: IP address of DHCPv6 server.
+    :param server_mac: MAC address of DHCPv6 server.
+    :param interface_id: ID of proxy interface.
+    :type rx_if: str
+    :type tx_if: str
+    :type link_local_ip: str
+    :type proxy_ip: str
+    :type server_ip: str
+    :type server_mac: str
+    :type interface_id: str
+    """
+
+    rxq = RxQueue(rx_if)
+    txq = TxQueue(tx_if)
+
+    sent_packets = []
+
+    dhcp_reply_pkt = Ether(src=server_mac) / \
+                    IPv6(src=server_ip, dst=proxy_ip) / \
+                    UDP(sport=UDP_SERVICES.dhcpv6_server,
+                        dport=UDP_SERVICES.dhcpv6_client) / \
+                    DHCP6_RelayReply(peeraddr=link_local_ip,
+                                     linkaddr=proxy_ip) / \
+                    DHCP6OptIfaceId(ifaceid=interface_id) / \
+                    DHCP6OptRelayMsg() / \
+                    DHCP6_Reply()
+
+    sent_packets.append(dhcp_reply_pkt)
+    txq.send(dhcp_reply_pkt)
+
+    ether = rxq.recv(2)
+
+    if ether is None:
+        raise RuntimeError('DHCPv6 REPLY timeout')
+
+    if ether['IPv6'].src != proxy_ip:
+        raise RuntimeError("Source IP address error!")
+    print "Source IP address: OK."
+
+    if not _check_udp_checksum(ether['IPv6']):
+        raise RuntimeError("Checksum error!")
+    print "Checksum: OK."
+
+    if ether['IPv6']['UDP']['Raw'].load != interface_id:
+        raise RuntimeError("Interface ID error!")
+    print "Interface ID: OK."
+
+
+def main():
+    """Send DHCPv6 proxy messages."""
+
+    args = TrafficScriptArg(['tx_src_ip', 'tx_dst_ip', 'proxy_ip', 'proxy_mac',
+                             'server_ip', 'client_mac', 'server_mac',
+                             'proxy_to_server_mac'])
+
+    client_if = args.get_arg('tx_if')
+    server_if = args.get_arg('rx_if')
+    proxy_ip = args.get_arg('proxy_ip')
+    proxy_mac = args.get_arg('proxy_mac')
+    proxy_to_server_mac = args.get_arg('proxy_to_server_mac')
+    server_ip = args.get_arg('server_ip')
+    client_mac = args.get_arg('client_mac')
+    server_mac = args.get_arg('server_mac')
+
+    link_local_ip = "fe80::1"
+    dhcp_multicast_ip = "ff02::1:2"
+    client_duid = str(random.randint(0, 9999))
+
+    # SOLICIT
+    interface_id = dhcpv6_solicit(client_if, server_if, dhcp_multicast_ip,
+                                  link_local_ip, proxy_ip, server_ip,
+                                  server_mac, client_duid, client_mac)
+
+    # ADVERTISE
+    dhcpv6_advertise(client_if, server_if, link_local_ip, proxy_ip,
+                     server_ip, server_mac, proxy_to_server_mac, interface_id)
+
+    # REQUEST
+    dhcpv6_request(client_if, server_if, dhcp_multicast_ip, link_local_ip,
+                   proxy_ip, server_ip, client_duid, client_mac)
+
+    # REPLY
+    dhcpv6_reply(client_if, server_if, link_local_ip, proxy_ip, server_ip,
+                 server_mac, interface_id)
+
+    sys.exit(0)
+
+if __name__ == "__main__":
+    main()