168 lines
3.5 KiB
Bash
Executable File
168 lines
3.5 KiB
Bash
Executable File
#!/usr/bin/env bash
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#---------------------------------------
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#-----------------------------
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# Predifined Variables
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#-----------------------------
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#---------------------------------------
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conf_file="/etc/ddclient.conf"
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ddclient_script="/usr/sbin/ddclient"
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_SKIP_IP=false
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#---------------------------------------
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#-----------------------------
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# Functions
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#-----------------------------
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#---------------------------------------
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usage() {
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echo
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if [ -n "$1" ];then
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echo -e "Error: $1\n"
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fi
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echo -e ""
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echo -e "\tusage: `basename $0` < dyndns-name>\n"
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exit 1
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}
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fatal(){
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echo ""
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echo -e " [ Fatal ] $*"
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echo ""
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echo -e "\tScript terminated.."
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echo ""
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exit 1
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}
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info (){
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echo ""
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echo -e " [ Info ] $*"
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echo ""
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}
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ok (){
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echo ""
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echo -e " [ Ok ] $*"
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echo ""
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}
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#---------------------------------------
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#-----------------------------
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# Evaluate command line
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#-----------------------------
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#---------------------------------------
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[ $# -eq "0" -o $# -gt "2" ] && usage "wrong number of arguments"
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DYNDNS_NAME=$1
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#---------------------------------------
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#-----------------------------
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# Some checks
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#-----------------------------
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#---------------------------------------
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# - Only run ddclient, if it is installed
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# -
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if [[ ! -x "$ddclient_script" ]]; then
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fatal "Script '${ddclient_script}' not found!"
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fi
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# - Configuration present?
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# -
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if [[ ! -f "$conf_file" ]]; then
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fatal "ddclient Configuration '${conf_file}' not found!"
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fi
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# - Running on a terminal?
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# -
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if [[ -t 1 ]] ; then
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LOGGING=true
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else
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LOGGING=false
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fi
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# - Check, if ddclient uses a local interface (variable "if")
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# -
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# - if true, interface name will be stored into variable 'if'
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# -
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eval `sed -n 's/\(if=[^ ,]*\)/\1/p' /etc/ddclient.conf`
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# - Check if interface used by dyndns is present
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#
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if [ -n "$if" ];then
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for _IFACE in `ifconfig | grep -e"^ppp" | cut -d" " -f1 `; do
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if [ "$_IFACE" = $if ];then
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PPP_IFACE=$_IFACE
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break
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fi
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done
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## - exit if no connection for dydns interface exists
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## -
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if [ "X" = "X$PPP_IFACE" ]; then
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fatal "No interface for dydns exists."
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fi
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else
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_SKIP_IP=true
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fi
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#---------------------------------------
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#-----------------------------
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# Update DynDNS IP-Address if needed
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#-----------------------------
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#---------------------------------------
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if ! $_SKIP_IP ; then
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PPP_REMOTE=`ifconfig $PPP_IFACE 2>/dev/null | grep -e "P-[tz]-P" | cut -d":" -f3 | cut -d " " -f1`
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PPP_LOCAL=`ifconfig $PPP_IFACE 2>/dev/null | grep -e "P-[tz]-P" | cut -d":" -f2 | cut -d " " -f1`
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if [ "X$PPP_REMOTE" != "X" -a "X$PPP_LOCAL" != "X" ] ; then
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DYNDNS_IP=`dig $DYNDNS_NAME +short`
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if [ "$DYNDNS_IP" != "$PPP_LOCAL" ] ; then
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# - Run ddclient with the IP address of the ppp device
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# -
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info "Try to update ip-adress entry at dyndns.org.."
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/usr/sbin/ddclient -syslog -ip $PPP_LOCAL
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else
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if $LOGGING ; then
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ok "DynDNS IP is up-to-date"
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fi
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fi
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fi
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else
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# - Load defaults
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source /etc/default/ddclient
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if $(ps -e f | grep -E "[[:digit:]]\ .*ddclient" | grep -q -v grep) || [[ "$run_daemon" = "true" ]]; then
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if $LOGGING ; then
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info "'ddclient' is configured to run as daemon. So nothing to do here."
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fi
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else
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if $LOGGING ; then
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info "Going to run '${ddclient_script}'.."
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fi
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/usr/sbin/ddclient -file $conf_file
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fi
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fi
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exit 0;
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