Commandline Bash script for retrieving connected clients from cable modem/router Compal CH7465LG (Ziggo)

getClients.sh

#!/bin/bash
#
#--------------------------------------------------------------------
# This script retrieves a list (in XML format) of connected clients
# on a Compal CH7465LG modem/router.
# This modem is provided by various ISPs, a.o:
# - UPC Connect Box (CH)
# - Irish Virgin Media Super Hub 3.0 (IE)
# - Ziggo Connectbox (NL)
# - Unitymedia Connect Box (DE)
#
####
# License: Freeware
# Author: Arjan Haverkamp (arjan at webgear dot nl)
# Date: 2021-01-08
#--------------------------------------------------------------------

###
### Configuration
###

host='192.168.1.1'
password='Password'
cookieFile='/tmp/cookies.txt'

###
### End of configuration
###

token=''
userAgent='Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/29.0.1547.65 Safari/537.36'

output=$(curl -s \
   --head \
   --cookie $cookieFile \
   --cookie-jar $cookieFile \
   "-A '$userAgent'" \
   "http://$host/common_page/login.html"
)

if [[ $output =~ sessionToken=([0-9]+) ]]; then
   token=${BASH_REMATCH[1]}
fi

output=$(curl -i -s \
   --cookie $cookieFile \
   --cookie-jar $cookieFile \
   "-A '$userAgent'" \
   -d "token=$token&fun=15&Username=NULL&Password=$password" \
    "http://$host/xml/setter.xml"
)

if [[ $output =~ sessionToken=([0-9]+) ]]; then
   token=${BASH_REMATCH[1]}
fi

output=$(curl -s \
   --cookie $cookieFile \
   --cookie-jar $cookieFile \
   "-A '$userAgent'" \
   -d "token=$token&fun=123" \
    "http://$host/xml/getter.xml"
)

# Finally: logout
curl -s \
   --cookie $cookieFile \
   --cookie-jar $cookieFile \
   "-A '$userAgent'" \
   -d "token=$token&fun=16" \
    "http://$host/xml/setter.xml"

/bin/rm -f $cookieFile

echo $output