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procurve-arp.py
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procurve-arp.py
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"""
References:
https://stackoverflow.com/questions/6545023/how-to-sort-ip-addresses-stored-in-dictionary-in-python/6545090#6545090
https://stackoverflow.com/questions/20944483/python-3-sort-a-dict-by-its-values
https://docs.python.org/3.3/tutorial/datastructures.html
Read the inventory file and create arp.json
Example
device-inventory-gl2
command line (executed from the netmiko-gl\port-maps folder)
python arp.py -s gl2
If using vs code debug, the launch.json file will look like this
{
// Use IntelliSense to learn about possible attributes.
// Hover to view descriptions of existing attributes.
// For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
"version": "0.2.0",
"configurations": [
{
"name": "Python: Current File",
"type": "python",
"request": "launch",
"program": "${file}",
"console": "integratedTerminal",
"justMyCode": true,
"args": "-s gl2",
"justMyCode": true
}
]
}
read a file containing the output of "sh ip arp" and create a sorted list of IP addresses and
IP/Mac Address conbinations.
In this example "sh ip arp vl 250". Save output as arp.txt
Internet 10.53.250.4 3 1060.4b9f.62f8 ARPA Vlan250
Internet 10.53.250.1 - 0012.00f3.febf ARPA Vlan250
Internet 10.53.250.2 0 1060.4b9d.db68 ARPA Vlan250
Internet 10.53.250.12 0 d8d4.3c2e.4b32 ARPA Vlan250
Internet 10.53.250.15 0 d8d4.3c2e.4b31 ARPA Vlan250
Internet 10.53.250.11 0 d8d4.3c2e.4b2f ARPA Vlan250
Internet 10.53.250.10 0 d8d4.3c2e.4b30 ARPA Vlan250
Run the script. Output is a list of correctly sorted list of IPs and MAC Addresses.
Output
10.53.250.1
10.53.250.2
10.53.250.4
10.53.250.10
10.53.250.11
10.53.250.12
10.53.250.15
10.53.250.1 0012.00f3.febf
10.53.250.2 1060.4b9d.db68
10.53.250.4 1060.4b9f.62f8
10.53.250.10 d8d4.3c2e.4b30
10.53.250.11 d8d4.3c2e.4b2f
10.53.250.12 d8d4.3c2e.4b32
10.53.250.15 d8d4.3c2e.4b31
"""
import argparse
import json
import os
import re
import struct
import sys
from socket import inet_aton, inet_ntoa
from icecream import ic
import manuf
# from disc_functs import get_current_path
# ic.enable()
ic.disable()
__author__ = "Michael Hubbard"
__author_email__ = "michael.hubbard999@gmail.com"
__copyright__ = ""
__license__ = "Unlicense"
# -*- coding: utf-8 -*-
# procurve-arp.py
# Procurve Change Request data collection
# Created by Michael Hubbard on 2024-01-20.
def ip2long(ip):
ip = ip.lstrip(" ")
packed = inet_aton(ip)
lng = struct.unpack("!L", packed)[0]
return lng
def long2ip(lng):
packed = struct.pack("!L", lng)
ip = inet_ntoa(packed)
return ip
def remove_empty_lines(filename):
if not os.path.isfile(filename):
print("{} does not exist ".format(filename))
return
with open(filename) as filehandle:
lines = filehandle.readlines()
with open(filename, "w") as filehandle:
lines = filter(lambda x: x.strip(), lines)
filehandle.writelines(lines)
def get_current_path(sub_dir1: str, extension: str = "", sub_dir2="") -> str:
"""
returns a valid path regardless of the OS
Args:
sub_dir1 (str): name of the sub directory off the cwd required
extension (str): string appended after hostname - ex. -interface.txt
sub_dir2 (str, optional): if a nested sub_dir is used Defaults to "".
Returns:
str: full pathname of the file to be written
"""
current_path = os.getcwd()
extension = hostname + extension
int_report = os.path.join(current_path, sub_dir1, sub_dir2, extension)
return int_report
parser = argparse.ArgumentParser()
parser.add_argument("-s", "--site", help="Site name - ex. HQ")
args = parser.parse_args()
site = args.site
if site is None:
print("-s site name is a required argument")
sys.exit()
else:
dev_inv_file = f"device-inventory-{site}.csv"
# check if site's device inventory file exists
if not os.path.isfile(dev_inv_file):
print("{} doesn't exist ".format(dev_inv_file))
sys.exit()
remove_empty_lines(dev_inv_file)
with open(dev_inv_file) as devices_file:
fabric = devices_file.readlines()
# loc = get_current_path()
loc = os.getcwd()
print("-" * (len(loc + dev_inv_file) + 23))
print(f"Reading devices from: {loc}\{dev_inv_file}")
print("-" * (len(loc + dev_inv_file) + 23))
uptime = []
for line in fabric:
line = line.strip("\n")
ipaddr = line.split(",")[0]
vendor = line.split(",")[1]
hostname = line.split(",")[2]
username = line.split(",")[3]
# password = line.split(",")[4]
arp_file = get_current_path("port-maps", "-arp.txt", "data")
ic(arp_file)
print()
print("-" * (len(loc + arp_file) + 23))
print(f"Reading devices from: {loc}\{arp_file}")
print("-" * (len(loc + arp_file) + 23))
data1 = []
try:
f = open(arp_file, "r")
except FileNotFoundError:
print(f"{arp_file} does not exist")
else:
# MAC addresses are expressed differently depending on the manufacture and even model of the device
# the formats that this script can parse are:
# 0a:0a:0a:0a:0a:0a, 0a-0a-0a-0a-0a-0a, 0a0a0a.0a0a0a0 and 0a0a0a-0a0a0a
# this should cover most Cisco and HP devices.
for line in f:
device_name_loc = line.find("#")
if device_name_loc != -1:
device_name = line[0:device_name_loc]
device_name = device_name.strip()
if line.find("0000.0000.0000") == 38:
continue
match_PC = re.search(r"([0-9A-F]{2}[-:]){5}([0-9A-F]{2})", line, re.I)
match_Cisco = re.search(r"([0-9A-F]{4}[.]){2}([0-9A-F]{4})", line, re.I)
match_HP = re.search(r"([0-9A-F]{6}[-])([0-9A-F]{6})", line, re.I)
# strip out lines without a mac address
if match_PC or match_Cisco or match_HP:
data1.append(line)
f.close
# Save the cleaned up arp records
# If the file has a hostname# at the top save it as
# hostname-arp.txt, else switch-arp.txt
try:
if "device_name" in locals():
save_device = device_name + "-arp.txt"
device_file = open(save_device, "w")
else:
device_name = "switch"
save_device = device_name + "-arp.txt"
device_file = open(save_device, "w")
for line in data1:
device_file.write(line)
device_file.close()
except FileNotFoundError as fnf_error:
print(fnf_error)
sys.exit(0)
# string length
i = len(data1) - 1
d = i + 1
counter = 0
sItems = []
IPs = []
data = {}
data2 = {}
while counter <= i:
IP = data1[counter]
# Remove Enter
IP = IP.strip("\n")
# extract data and save to hash_list for hashing
L = str.split(IP)
# print(L)
IP_Addr = L[0]
Mac = L[1]
Mac_Type = L[2]
# Not all entries list an interface
if len([L]) > 2:
Interface_Num = L[3]
IPs.append(str(IP_Addr))
# Convert IP to a long so it can be sorted.
# See https://stackoverflow.com/questions/6545023/how-to-sort-ip-addresses-stored-in-dictionary-in-python/6545090#6545090
IP = ip2long(IP_Addr)
# add IP address and MAC to dictionary
data[IP] = Mac
data2[IP] = IP_Addr
counter = counter + 1
# Sort IPs
# IPs = sorted(IPs, key=lambda ip: struct.unpack("!L", inet_aton(ip))[0])
IPs = sorted(
IPs, key=lambda ip: struct.unpack("!L", inet_aton(ip.lstrip(" ")))[0]
)
print("Number of IP Addresses: %s " % d)
print("-" * (24 + len(str(d))))
for IP in IPs:
print(IP)
print()
print("Number of IP and MAC Addresses: %s " % d)
print("-" * (32 + len(str(d))))
# Create an empty dictionary to hold mac-ip pairs. Will be used with macaddr.py to output ip with interface
Mac_IP = {}
s = [(k, data[k]) for k in sorted(data)]
for k, v in s:
# Convert IP back to dotted quad notation.
k = long2ip(k)
print(k, v)
Mac_IP[v] = k
print()
# look up manufacture from MAC
p = manuf.MacParser()
# Print IP, MAC, Manufacture
print("Number of IP, MAC and Manufacture: %s " % d)
print("-" * (35 + len(str(d))))
s = [(k, data[k]) for k in sorted(data)]
for k, v in s:
# Convert IP back to dotted quad notation.
k = long2ip(k)
v = v.split()
v = v[0]
manufacture = p.get_manuf(v)
print(k, v, manufacture)
# Write the dictionary out as Mac2IP.json so that it can be used in macaddr.py
mydatafile = get_current_path("port-maps", "-Mac2IP.json", "data")
ic(mydatafile)
with open(mydatafile, "w") as f:
json.dump(Mac_IP, f, indent=4)