Fetching ZTE SpeedPort Entry 2i (VDSL modem/router, COSMOTE Greece) modem statistics for Zabbix or other purposes

check_speedport2i.sh

#!/bin/bash
## Available to all; taken from https://github.com/NMichas/icinga-speedport2i - slight mods
## to work with Zabbix 3.4
##
## -h (hostname)     Mandatory. script does not work without.
##                   if no other parameter is provided, a summary with all values is given.
##
## each of the other parameters calls it again grepping the particular value.

# Gather command-line parameters.
while [ "$#" -gt 0 ]; do
  case "$1" in
    -h) hostname="$2"; shift 2;;

    -ucr) $0 -h $hostname | grep Upstream_current_rate | awk -F "=" '{print $2}' ; exit 0;;
    -dcr) $0 -h $hostname | grep Downstream_current_rate | awk -F "=" '{print $2}' ; exit 0;;

    -unm) $0 -h $hostname | grep Upstream_noise_margin | awk -F "=" '{print $2}' ; exit 0;;
    -dnm) $0 -h $hostname | grep Downstream_noise_margin | awk -F "=" '{print $2}' ; exit 0;;

    -uat) $0 -h $hostname | grep Upstream_attenuation | awk -F "=" '{print $2}' ; exit 0;;
    -dat) $0 -h $hostname | grep Downstream_attenuation | awk -F "=" '{print $2}' ; exit 0;;

    -dcrc) $0 -h $hostname | grep DownCrc_errors | awk -F "=" '{print $2}' ; exit 0;;
    -ucrc) $0 -h $hostname | grep UpCrc_errors | awk -F "=" '{print $2}' ; exit 0;;

    -dfec) $0 -h $hostname | grep Fec_errors | awk -F "=" '{print $2}' ; exit 0;;
    -ufec) $0 -h $hostname | grep Atuc_fec_errors | awk -F "=" '{print $2}' ; exit 0;;

    --hostname) echo "$1 requires an argument" >&2; exit 1;;
    -*) echo "unknown option: $1" >&2; exit 1;;
    *) echo "unrecognized argument: $1"; exit 1;;
  esac
done


if [ -f /tmp/output.modem ];
then
  FILE_TIME=$(( `date +%s` - `stat -L --format %Y /tmp/output.modem` ))
  if [[ "$FILE_TIME" -gt 60 ]];
  then
     curl -s http://$hostname/common_page/status_info_lua.lua -o /tmp/output.modem
  fi
else
  curl -s http://$hostname/common_page/status_info_lua.lua -o /tmp/output.modem
fi


# Get HTML exctract of the status page.
STATUS=$(cat /tmp/output.modem)

# Scrape values.
Upstream_noise_margin=$(grep -Po "<ParaName>Upstream_noise_margin</ParaName>.*?<ParaValue>\K(.*?)(?=</ParaValue>)" <<< "$STATUS")
Upstream_current_rate=$(grep -Po "<ParaName>Upstream_current_rate</ParaName>.*?<ParaValue>\K(.*?)(?=</ParaValue>)" <<< "$STATUS")
Downstream_noise_margin=$(grep -Po "<ParaName>Downstream_noise_margin</ParaName>.*?<ParaValue>\K(.*?)(?=</ParaValue>)" <<< "$STATUS")
Downstream_current_rate=$(grep -Po "<ParaName>Downstream_current_rate</ParaName>.*?<ParaValue>\K(.*?)(?=</ParaValue>)" <<< "$STATUS")
UpCrc_errors=$(grep -Po "<ParaName>UpCrc_errors</ParaName>.*?<ParaValue>\K(.*?)(?=</ParaValue>)" <<< "$STATUS")
Downstream_attenuation=$(grep -Po "<ParaName>Downstream_attenuation</ParaName>.*?<ParaValue>\K(.*?)(?=</ParaValue>)" <<< "$STATUS")
Fec_errors=$(grep -Po "<ParaName>Fec_errors</ParaName>.*?<ParaValue>\K(.*?)(?=</ParaValue>)" <<< "$STATUS")
DownCrc_errors=$(grep -Po "<ParaName>DownCrc_errors</ParaName>.*?<ParaValue>\K(.*?)(?=</ParaValue>)" <<< "$STATUS")
Atuc_fec_errors=$(grep -Po "<ParaName>Atuc_fec_errors</ParaName>.*?<ParaValue>\K(.*?)(?=</ParaValue>)" <<< "$STATUS")
Upstream_attenuation=$(grep -Po "<ParaName>Upstream_attenuation</ParaName>.*?<ParaValue>\K(.*?)(?=</ParaValue>)" <<< "$STATUS")

# Scaling.
Upstream_noise_margin=`bc <<<"scale=1; $Upstream_noise_margin / 10"`
Downstream_noise_margin=`bc <<<"scale=1; $Downstream_noise_margin / 10"`
Downstream_attenuation=`bc <<<"scale=1; $Downstream_attenuation / 10"`
Upstream_attenuation=`bc <<<"scale=1; $Upstream_attenuation / 10"`

# Checks.
critical=0
if [[ -n $downRateC ]] && (( $critical==0 )) ; then
  critical=$(echo $Downstream_current_rate '<' $downRateC | bc -l)
fi
if [[ -n $upRateC ]] && (( $critical==0 )) ; then
  critical=$(echo $Upstream_current_rate '<' $upRateC | bc -l)
fi
if [[ -n $downAttenuationC ]] && (( $critical==0 )) ; then
  critical=$(echo $Downstream_attenuation '<' $downAttenuationC | bc -l)
fi
if [[ -n $upAttenuationC ]] && (( $critical==0 )) ; then
  critical=$(echo $Upstream_attenuation '<' $upAttenuationC | bc -l)
fi

warning=0
if (( $critical==0 )); then
  if [[ -n $downRateW ]] && (( $warning==0 )) ; then
    warning=$(echo $Downstream_current_rate '<' $downRateW | bc -l)
  fi
  if [[ -n $upRateW ]] && (( $warning==0 )) ; then
    warning=$(echo $Upstream_current_rate '<' $upRateW  | bc -l)
  fi
  if [[ -n $downAttenuationW ]] && (( $warning==0 )) ; then
    warning=$(echo $Downstream_attenuation '<' $downAttenuationW | bc -l)
  fi
  if [[ -n $upAttenuationW ]] && (( $warning==0 )) ; then
    warning=$(echo $Upstream_attenuation '<' $upAttenuationW | bc -l)
  fi
fi

# Generate output.
OUTPUT="OK"
if (( $warning==1 )); then
  OUTPUT="WARNING"
fi
if (( $critical==1 )); then
  OUTPUT="CRITICAL"
fi


echo "Upstream_noise_margin=$Upstream_noise_margin"
echo "Downstream_noise_margin=$Downstream_noise_margin"
echo "Upstream_current_rate=$Upstream_current_rate"
echo "Downstream_current_rate=$Downstream_current_rate"
echo "UpCrc_errors=$UpCrc_errors"
echo "DownCrc_errors=$DownCrc_errors"
echo "Upstream_attenuation=$Upstream_attenuation"
echo "Downstream_attenuation=$Downstream_attenuation"
echo "Fec_errors=$Fec_errors"
echo "Atuc_fec_errors=$Atuc_fec_errors"

# Output.
echo $OUTPUT

# Exit status
if (( $warning==1 )); then
  exit 1
fi
if (( $critical==1 )); then
  exit 2
fi