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

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#!/bin/sh
# Netmon Configurator (C) 2010-2012 Freifunk Oldenburg
# Lizenz: GPL v3
test -f /tmp/started || exit
#Get the configuration from the uci configuration file
#If it does not exists, then get it from a normal bash file with variables.
if [ -f /etc/config/configurator ];then
API_IPV4_ADRESS=`uci get configurator.@api[0].ipv4_address`
API_IPV6_ADRESS=`uci get configurator.@api[0].ipv6_address`
API_IPV6_INTERFACE=`uci get configurator.@api[0].ipv6_interface`
API_TIMEOUT=`uci get configurator.@api[0].timeout`
SCRIPT_ERROR_LEVEL=`uci get configurator.@script[0].error_level`
SCRIPT_LOGFILE=`uci get configurator.@script[0].logfile`
SCRIPT_SYNC_HOSTNAME=`uci get configurator.@script[0].sync_hostname`
CRAWL_METHOD=`uci get configurator.@crawl[0].method`
CRAWL_ROUTER_ID=`uci get configurator.@crawl[0].router_id`
CRAWL_UPDATE_HASH=`uci get configurator.@crawl[0].update_hash`
CRAWL_NICKNAME=`uci get configurator.@crawl[0].nickname`
CRAWL_PASSWORD=`uci get configurator.@crawl[0].password`
else
. `dirname $0`/configurator_config
fi
if [ "$API_IPV4_ADRESS" != "1" ]; then
netmon_api=$API_IPV4_ADRESS
else
netmon_api="[$API_IPV6_ADRESS"%"$API_IPV6_INTERFACE]"
fi
if [ "$SCRIPT_ERROR_LEVEL" -gt "1" ]; then
err() {
echo "$(date) [configurator]: $1" >> $SCRIPT_LOGFILE
}
else
err() {
:
}
fi
sync_hostname() {
err "Syncing hostname"
api_return=$(wget -T $API_TIMEOUT -q -O - "http://$netmon_api/api_csv_configurator.php?section=get_hostname&authentificationmethod=$CRAWL_METHOD&nickname=$CRAWL_NICKNAME&password=$CRAWL_PASSWORD&router_auto_update_hash=$CRAWL_UPDATE_HASH&router_id=$CRAWL_ROUTER_ID")
ret=${api_return%%,*}
if [ "$ret" != "success" ]; then
err "Ther was an error fetching the hostname"
exit 0
elif [ "$ret" = "success" ]; then
netmon_hostname=${api_return%,*}
netmon_hostname=${netmon_hostname#*,}
#check for valid hostname as specified in rfc 1123
#see http://stackoverflow.com/a/3824105
regex='^([a-zA-Z0-9]|[a-zA-Z0-9][a-zA-Z0-9\-]{0,61}[a-zA-Z0-9])'
regex=$regex'(\.([a-zA-Z0-9]|[a-zA-Z0-9][a-zA-Z0-9\-]{0,61}[a-zA-Z0-9]))*$'
if [ "${#netmon_hostname}" -le "255" ]; then
if echo -n $netmon_hostname | egrep -q "$regex"; then
if [ "$netmon_hostname" != "`cat /proc/sys/kernel/hostname`" ]; then
err "Setting new hostname: $netmon_hostname"
uci set system.@system[0].hostname=$netmon_hostname
uci commit
echo $netmon_hostname > /proc/sys/kernel/hostname
else
err "Hostname is up to date"
fi
else
err "Hostname ist malformed"
exit 0
fi
else
err "Hostname exceeds the maximum length of 255 characters"
exit 0
fi
fi
}
if [ "$SCRIPT_SYNC_HOSTNAME" = "1" ]; then
sync_hostname
fi