Attachment 602342 Details for Bug 626514 – dhclient wrapper script

dhclient wrapper script

dhclient-ppp.sh (text/plain), 2.17 KB, created by Hrvoje on 2012-08-05 09:41:12 UTC

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Creator: Hrvoje

Created: 2012-08-05 09:41:12 UTC

Size: 2.17 KB

patch

obsolete

>#!/bin/bash
>
># by Hrvoje
>#
># This script is wrapper around dhclient binary.
>#
># It checks for few extra option, and acts accordingly. Those are:
>#
># --fakeif	When called with this option, before calling real dhclient,
># script is checking to see whether interface actually exists. If not, it will
># create dummy interface, so dhclient can complete, and hopefully call needed
># scripts. Dummy interface is created on top of "lo", ising "ip link" commands.
>#
># --genDUID <LL>	This option and it's argument instructs script to create
># DUID and store it in lease file. NOTE: this will overwrite any existing lease
># and it's content. DUID is generated by transforming LL adres to bynary form,
># and padding it to reach 12 bytes. First two bytes are allways "0" and "1".
>#
>
>myoutarg=()
>myname=`basename $0`
>
>mylocallease="/var/lib/dhclient/dhclient.leases"
>while [ -n "$1" ] ; do
>  myarg="$1"
>  shift
>  case $myarg in
>    --fakeif)
>      myfakeit=1
>      ;;
>    --genDUID)
>      mygenduid="$1"
>      shift
>      if [ -z "$mygenduid" ] ; then
>        echo "--genDUID requires argument" >&2
>        exit 1
>      fi
>      ;;
>    -lf)
>      mylocallease=$1
>      shift
>      myoutarg=( "${myoutarg[@]}" "$myarg" "$mylocallease" )
>      ;;
>    -*)
>      myoutarg=( "${myoutarg[@]}" "$myarg" )
>      ;;
>    *)
>      myifname=$myarg
>      myoutarg=( "${myoutarg[@]}" "$myarg" )
>      ;;
>  esac
>done
>
>#echo $myfakeit $myifname
>if [ -n "$myfakeit" ] ; then
>  ip link show $IFNAME >/dev/null 2>&1
>  RET=$?
>  if [ $RET -ne 0 ] ; then
>    mydummy=1
>    logger -t $myname -p daemon.info "Faking device $myifname"
>
>    ip link add link lo name $myifname type dummy
>    ip link set $myifname up
>  fi
>fi
>
>if [ -n "$mygenduid" ] && [ -n "$mylocallease" ] ; then
>  mylocalduid=`echo $mygenduid | awk '{a=substr($1,7,length($1)-6);gsub(":","",a);b=substr("0001000000000000000000",1,24-length(a));b=b a;for(c=1;c<length(b);c+=2) {printf "\\\\x%s",substr(b,c,2)};print ""}'`
>
>  echo "default-duid \"$mylocalduid\";" > $mylocallease
>  logger -t $myname -p daemon.info "Generated DUID $mylocalduid for $myifname"
>fi
>
>dhclient ${myoutarg[@]}
>RET=$?
>
>if [ -n "$mydummy" ] ; then
>  ip link set $myifname down
>  ip link del dev $myifname
>fi
>
>exit $RET
>

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Attachments on bug 626514: 443055 | 443060 | 443128 | 446301 | 446939 | 596257 | 598914 | 602341 | 602342 | 602343 | 602344 | 602345 | 740389 | 740393 | 740670 | 741830 | 741831 | 743452 | 743453 | 819281 | 819282 | 819283 | 821802 | 901378 | 901379 | 901380