# 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.

*** Settings ***
| Library  | Collections
| Resource | resources/libraries/robot/default.robot
| Library  | resources.libraries.python.Dhcp.DhcpClient
| Library  | resources.libraries.python.TrafficScriptExecutor
| Documentation | DHCP Client specific keywords.

*** Keywords ***
| Check DHCP DISCOVER header
| | [Documentation] | Check if DHCP DISCOVER message contains all required
| | ... | fields.
| | ...
| | ... | *Arguments:*
| | ... | - tg_node - TG node. Type: dictionary
| | ... | - interface - TG interface where listen for DHCP DISCOVER message.
| | ... |   Type: string
| | ... | - src_mac - DHCP client MAC address. Type: string
| | ... | - hostname - DHCP client hostname (Optional, Default="", if not
| | ... |   specified, the hostname is not checked). Type: string
| | ...
| | ... | *Return:*
| | ... | - No value returned.
| | ...
| | ... | *Example:*
| | ...
| | ... | \| Check DHCP DISCOVER header \| ${nodes['TG']} \
| | ... | \| eth2 \| 08:00:27:66:b8:57 \|
| | ... | \| Check DHCP DISCOVER header \| ${nodes['TG']} \
| | ... | \| eth2 \| 08:00:27:66:b8:57 \| client-hostname \|
| | ...
| | [Arguments] | ${tg_node} | ${interface} | ${src_mac} | ${hostname}=${EMPTY}
| | ${args}= | Catenate | --rx_if | ${interface} | --rx_src_mac | ${src_mac}
| | ${args}= | Run Keyword If | "${hostname}" == "" | Set Variable | ${args}
| | ...      | ELSE | Catenate | ${args} | --hostname | ${hostname}
| | Run Traffic Script On Node | dhcp/check_dhcp_discover.py
| | ... | ${tg_node} | ${args}


| Check DHCP REQUEST after OFFER
| | [Documentation] | Check if DHCP REQUEST message contains all required
| | ... | fields. DHCP REQUEST should be send by a client after DHCP OFFER
| | ... | message sent by a server.
| | ...
| | ... | *Arguments:*
| | ... | - tg_node - TG node. Type: dictionary
| | ... | - tg_interface - TG interface where listen for DHCP DISCOVER,
| | ... |   send DHCP OFFER and listen for DHCP REQUEST messages. Type: string
| | ... | - server_mac - DHCP server MAC address. Type: string
| | ... | - server_ip - DHCP server IP address. Type: string
| | ... | - client_mac - DHCP client MAC address. Type: string
| | ... | - client_ip - IP address that should be offered to client.
| | ... |   Type: string
| | ... | - client_mask - IP netmask that should be offered to client.
| | ... |   Type: string
| | ... | - hostname - DHCP client hostname (Optional, Default="", if not
| | ... |   specified, the hostname is not checked). Type: string
| | ... | - offer_xid - Transaction ID (Optional, Default="", if not specified
| | ... |   xid field in DHCP OFFER is same as in DHCP DISCOVER message).
| | ... |   Type: integer
| | ...
| | ... | *Return:*
| | ... | - No value returned.
| | ...
| | ... | *Raises:*
| | ... | - DHCP REQUEST Rx timeout - if no DHCP REQUEST is received.
| | ...
| | ... | *Example:*
| | ...
| | ... | \| Check DHCP REQUEST after OFFER \| ${nodes['TG']} \
| | ... | \| eth2 \| 08:00:27:66:b8:57 \| 192.168.23.1 \
| | ... | \| 08:00:27:46:2b:4c \| 192.168.23.10 \| 255.255.255.0 \|
| | ...
| | ... | \| Run Keyword And Expect Error \| DHCP REQUEST Rx timeout \
| | ... | \| Check DHCP REQUEST after OFFER \
| | ... | \| ${nodes['TG']} \| eth2 \| 08:00:27:66:b8:57 \| 192.168.23.1 \
| | ... | \| 08:00:27:46:2b:4c \| 192.168.23.10 \| 255.255.255.0 \
| | ... | \| offer_xid=11113333 \|
| | ...
| | [Arguments] | ${tg_node} | ${tg_interface} | ${server_mac} | ${server_ip}
| | ... | ${client_mac} | ${client_ip} | ${client_mask}
| | ... | ${hostname}=${EMPTY} | ${offer_xid}=${EMPTY}
| | ${args}= | Catenate | --rx_if | ${tg_interface} | --server_mac
| | ... | ${server_mac} | --server_ip | ${server_ip} | --client_mac
| | ... | ${client_mac} | --client_ip | ${client_ip} | --client_mask
| | ... | ${client_mask}
| | ${args}= | Run Keyword If | "${hostname}" == "" | Set Variable | ${args}
| | ...      | ELSE | Catenate | ${args} | --hostname | ${hostname}
| | ${args}= | Run Keyword If | "${offer_xid}" == "" | Set Variable | ${args}
| | ...      | ELSE | Catenate | ${args} | --offer_xid | ${offer_xid}
| | Run Traffic Script On Node | dhcp/check_dhcp_request.py
| | ... | ${tg_node} | ${args}