2018-11-29 19:50:26 +01:00
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#!/usr/bin/env bash
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[ ! -z "$DEBUG" ] && set -x
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2018-11-29 22:55:34 +01:00
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#set -eu
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2018-11-29 19:50:26 +01:00
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function write_html {
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status=$1
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STATUS_HTML=/srv/www/spacestatus.html
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TEMPLATE_HTML='<!DOCTYPE html><html><head><title>Status /usr/space: %s</title></head><body><p><code style="color: %s">%s</code></p></html>'
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CLOSED_HTML='Closed darkred Closed'
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OPEN_HTML='Open brightgreen Open'
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if [ "$status" -gt 0 ]
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then
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printf "$TEMPLATE_HTML" $OPEN_HTML > $STATUS_HTML
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else
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printf "$TEMPLATE_HTML" $CLOSED_HTML > $STATUS_HTML
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fi
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}
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function write_json {
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status=$1
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STATUS_JSON=/srv/www/spacestatus.json
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TEMPLATE_JSON=$( cat /usr/local/etc/spacestatus.json )
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CLOSED_JSON='false'
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OPEN_JSON='true'
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2018-11-29 22:55:34 +01:00
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# Previous status Open & Open now -> skip
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grep -q '"open":true' $STATUS_JSON
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if [[ $? -eq 0 && "$status" -gt 0 ]]
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then
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return
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fi
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# Previous status Closed & Closed now -> skip
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grep -q '"open":false' $STATUS_JSON
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if [[ $? -eq 0 && "$status" -eq 0 ]]
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then
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return
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fi
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if [ "$status" -eq 0 ]
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2018-11-29 19:50:26 +01:00
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then
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2018-11-29 22:55:34 +01:00
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printf "$TEMPLATE_JSON" $OPEN_JSON $( date +%s ) > $STATUS_JSON
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2018-11-29 19:50:26 +01:00
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else
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2018-11-29 22:55:34 +01:00
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printf "$TEMPLATE_JSON" $CLOSED_JSON $( date +%s ) > $STATUS_JSON
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2018-11-29 19:50:26 +01:00
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fi
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}
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tmpcount=$(mktemp)
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exec 3>$tmpcount
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/usr/sbin/dhcp-lease-list --parsable | awk '{print $4}' | while read ip
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do
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/usr/bin/arping -w 1 -f -q $ip
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[ $? -eq 0 ] && echo 1 >&3
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done
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exec 3>&-
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leases=$( cat $tmpcount | wc -l )
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write_html $leases
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2018-11-29 22:55:34 +01:00
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write_json $leases
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2018-11-29 19:50:26 +01:00
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rm $tmpcount
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