firmware/src/packages/fff/fff-nodewatcher/files/usr/sbin/nodewatcher

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#!/bin/sh
# SPDX-License-Identifier: GPL-3.0-only
#
# Netmon Nodewatcher (C) 2010-2012 Freifunk Oldenburg
test -f /tmp/started || exit
# Allow only one instance
lockfile="/var/lock/${0##*/}.lock"
if ! lock -n "$lockfile"; then
echo "Only one instance of $0 allowed."
exit 1
fi
trap "lock -u \"$lockfile\"" INT TERM EXIT
[ -s /etc/config/nodewatcher ] || exit 1
[ "$(uci get nodewatcher.@script[0].disabled)" = "1" ] && exit 0
SCRIPT_DATA_FILE=$(uci get nodewatcher.@script[0].data_file)
debug() {
(>&2 echo "nodewatcher: $1")
}
#This method generates the crawl data XML file that is being fetched by netmon
#and provided by a small local httpd
crawl() {
debug "Putting all information into a XML-File and save it at $SCRIPT_DATA_FILE"
DATA="<?xml version='1.0' standalone='yes'?><data>"
for f in /usr/lib/nodewatcher.d/*.sh; do
tmp="$($f)"
if [ $? -ne 0 ]; then
debug "Error when executing subscript $f, exiting!"
exit 1
fi
DATA="$DATA$tmp"
done
DATA="$DATA</data>"
#write data to xml file that provides the data on httpd
SCRIPT_DATA_DIR=$(dirname "$SCRIPT_DATA_FILE")
test -d "$SCRIPT_DATA_DIR" || mkdir -p "$SCRIPT_DATA_DIR"
echo "$DATA" | gzip | tee "$SCRIPT_DATA_FILE" | alfred -s 64
}
LANG=C
#Erzeugt die statusdaten
debug "Generate actual status data"
crawl
exit 0