108 lines
2.2 KiB
Bash
Executable File
108 lines
2.2 KiB
Bash
Executable File
#!/usr/bin/env bash
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PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
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function 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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[ $# -eq "0" -o $# -gt "2" ] && usage "wrong number of arguments"
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DYNDNS_NAME=$1
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_SKIP_IP=false
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## - only run ddclient, if it is installed
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## -
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if [ ! -x "/usr/sbin/ddclient" ]; then
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exit 0
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fi
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if [ -f "/etc/ddclient.conf" ]; then
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## - read variable "if" from configurationd file "/etc/ddclient.conf"
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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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echo "No interface for dydns exists. exiting now.."
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exit 0
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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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else
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## - No configuration file found, so do not run
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## -
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echo "No configuration file \"/etc/ddclient.conf\" found, so do not run"
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exit 0
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fi
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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 $PPP_IFACE 2>/dev/null | grep -e "P-[tz]-P" | cut -d":" -f2 | cut -d " " -f1`
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fi
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if [ "X$PPP_REMOTE" != "X" -a "X$PPP_LOCAL" != "X" ] ; then
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if $_SKIP_IP ; then
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# Load defaults
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if [ -f /etc/default/ddclient ]; then
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source /etc/default/ddclient
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if [ "$run_daemon" = "true" ]; then
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exit 0
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fi
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fi
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/usr/sbin/ddclient
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else
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DYNDNS_IP=`dig $DYNDNS_NAME +short`
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#echo "$DYNDNS_NAME: $DYNDNS_IP - Local (PPP) IP: $PPP_LOCAL"
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if [ "$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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echo "try to update ipadress entry at dyndns.org.."
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echo
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/usr/sbin/ddclient -syslog -ip $PPP_LOCAL
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fi
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fi
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fi
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exit 0;
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