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#!@SHELL@
# dnssec-trigger shell script to set DNS servers on OSX.
# must run as root.
#
# usage: set example.com 192.0.2.1 192.0.2.2
# perform software upgrade install
function doinstall () {
dmg="$*"
mnt="/tmp/installdir.$$"
logger "start setdns install"
# copy the dmg to a tempfile because the hdiutil needs exclusive access
cp $dmg $dmg.$$
for (( try=0 ; try <= 20 ; try++ )) ; do
hdiutil attach "$dmg.$$" -mountpoint "$mnt" -nobrowse -noautoopen -noverify
if test $? = 0 ; then
# it worked
break
fi
sleep 1
done
logger "mounted setdns install"
# run the installer from mnt/dnssectrigger-x.x-i386.mpkg
pkg="`ls -d $mnt/dnssectrigger-*.mpkg`"
installer -pkg "$pkg" -target /
logger "done installer setdns install"
hdiutil detach "$mnt" -force
logger "detached setdns install"
rm -f $dmg $dmg.$$
}
cmd="$1"
shift
if test "$cmd" = "set"; then
domains="$1"
firstdomain="$1"
shift
# remaining arguments are the servers to set
servers="$*"
logger "dnssec-trigger-setdns to $domains and $servers"
elif test "$cmd" = "mset"; then
domains="$1"
firstdomain="$1"
shift
while test "$1" != "--"; do
domains="$domains $1"
shift
done
if test "$1" != "--"; then
echo >&2 "Usage: $0 mset domain [domain ..] -- server [server ..]"
exit 1
fi
shift # --
servers="$*"
logger "dnssec-trigger-setdns to $domains and $servers"
elif test "$cmd" = "install"; then
doinstall "$*"
exit 0
else
if test "$cmd" = "uninit"; then
logger "dnssec-trigger-setdns uninit dns override"
else
echo >&2 "bad command: set | mset | uninit"
echo >&2 " set domain [ip ..]"
echo >&2 " mset domain [domain ..] -- ip [ip ..]"
exit 1
fi
firstdomain=""
domains=""
servers=""
fi
# sets the DNS settings via scutil.
function with_scutil () {
# find the ids of the networkservices that are running or important
# output like: State:/Network/Service/AB5ED934-29E2-4E1B-BEDC-9167410B49A0/DNS
ids=`echo "list State:/Network/Service/[^/]+/DNS" | scutil | sed -e "s?^.* = ??"`
# set the nameservers of all those entries (and the global one)
for i in $ids State:/Network/Global/DNS; do
scutil <<END
open
d.init
d.add ServerAddresses * $servers
d.add SearchDomains * $domains
d.add DomainName $firstdomain
set $i
quit
END
done
}
# set the DNS settings via networksetup
nws="networksetup"
if test -z "$domains"; then
domains="empty"
fi
if test -z "$servers"; then
servers="empty"
fi
$nws -listallnetworkservices 2>/dev/null | grep -v '*' | while read x ; do
#echo $x
$nws -setsearchdomains "$x" $domains
# no quotes around servers: the IPs have to be separate arguments.
$nws -setdnsservers "$x" $servers
done
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