1#!/bin/sh 2# 3# Id: macos,v 1.4 2011/09/20 16:59:54 sar Exp 4# 5# automous run of this script will commit the DNS setting 6# 7 8if [ -x /usr/bin/logger ]; then 9 LOGGER="/usr/bin/logger -s -p user.notice -t dhclient" 10else 11 LOGGER=echo 12fi 13 14to_commit="yes" 15 16make_resolv_conf() { 17 to_commit="no" 18 if [ "x${new_dhcp6_name_servers}" != x ]; then 19 ( cat /dev/null > /var/run/resolv.conf.dhclient6 ) 20 exit_status=$? 21 if [ $exit_status -ne 0 ]; then 22 $LOGGER "Unable to create /var/run/resolv.conf.dhclient6: Error $exit_status" 23 else 24 if [ "x${new_dhcp6_domain_search}" != x ]; then 25 ( echo search ${new_dhcp6_domain_search} >> /var/run/resolv.conf.dhclient6 ) 26 exit_status=$? 27 fi 28 for nameserver in ${new_dhcp6_name_servers} ; do 29 if [ $exit_status -ne 0 ]; then 30 break 31 fi 32 # If the nameserver has a link-local address 33 # add a <zone_id> (interface name) to it. 34 case $nameserver in 35 fe80:*) zone_id="%$interface";; 36 FE80:*) zone_id="%$interface";; 37 *) zone_id="";; 38 esac 39 ( echo nameserver ${nameserver}$zone_id >> /etc/resolv.conf.dhclient6 ) 40 exit_status=$? 41 done 42 43 if [ $exit_status -eq 0 ]; then 44 to_commit="force" 45 commit_resolv_conf 46 fi 47 fi 48 fi 49} 50 51# Try to commit /var/run/resolv.conf.dhclient6 contents to 52# System Configuration framework's Dynamic Store. 53# Note this will be cleared by the next location change 54# or preempted by IPv4. 55# 56# The System Configuration agent "IPMonitor" gets the DNS configuration 57# from the IPv4 or IPv6 primary service in the Dynamic Store 58# (managed by configd). 59commit_resolv_conf() { 60 if [ -f /var/run/resolv.conf.dhclient6 ]; then 61 if [ -x /usr/sbin/scutil ]; then 62 serviceID=`echo show State:/Network/Global/IPv6 | \ 63 /usr/sbin/scutil | \ 64 awk '/PrimaryService/ { print $3 }'` 65 echo $serviceID 66 if [ x$serviceID = x ]; then 67 $LOGGER "Can't find the primary IPv6 service" 68 else 69 tmp=`mktemp SC_dhclient6.XXXXXXXXXX` 70 echo list | /usr/sbin/scutil > /tmp/$tmp 71 grep -q State:/Network/Service/$serviceID/DNS /tmp/$tmp 72 grep_status=$? 73 if [ $grep_status -eq 0 ]; then 74 $LOGGER "DNS service already set in primary IPv6 service" 75 rm /tmp/$tmp 76 else 77 res=/var/run/resolv.conf.dhclient6 78 cp /dev/null /tmp/$tmp 79 grep -q '^nameserver' $res 80 grep_status=$? 81 if [ $grep_status -eq 0 ]; then 82 echo d.add ServerAddresses '*' \ 83 `awk 'BEGIN { n="" } \ 84 /^nameserver/ { n=n " " $2 } \ 85 END { print n}' < $res` >> /tmp/$tmp 86 fi 87 grep -q '^search' $res 88 grep_status=$? 89 if [ $grep_status -eq 0 ]; then 90 echo d.add SearchDomains '*' \ 91 `sed 's/^search//' < $res` >> /tmp/$tmp 92 fi 93 echo set State:/Network/Service/$serviceID/DNS >> /tmp/$tmp 94 echo quit >> /tmp/$tmp 95 cat /tmp/$tmp 96 /usr/sbin/scutil < /tmp/$tmp 97 rm /tmp/$tmp 98 fi 99 fi 100 else 101 $LOGGER "Can't find SystemConfiguration tools." 102 fi 103 else 104 if [ $to_commit = force ]; then 105 $LOGGER "Can't find /var/run/resolv.conf.dhclient6" 106 fi 107 fi 108 to_commit="done" 109} 110 111# Must be used on exit. Invokes the local dhcp client exit hooks, if any. 112exit_with_hooks() { 113 exit_status=$1 114 if [ -f /etc/dhclient-exit-hooks ]; then 115 . /etc/dhclient-exit-hooks 116 fi 117# probably should do something with exit status of the local script 118 exit $exit_status 119} 120 121# Invoke the local dhcp client enter hooks, if they exist. 122if [ -f /etc/dhclient-enter-hooks ]; then 123 exit_status=0 124 . /etc/dhclient-enter-hooks 125 # allow the local script to abort processing of this state 126 # local script must set exit_status variable to nonzero. 127 if [ $exit_status -ne 0 ]; then 128 exit $exit_status 129 fi 130fi 131 132if [ x$reason = xMEDIUM ]; then 133 eval "ifconfig $interface $medium" 134 eval "ifconfig $interface inet -alias 0.0.0.0 $medium" >/dev/null 2>&1 135 sleep 1 136 exit_with_hooks 0 137fi 138 139### 140### DHCPv6 Handlers 141### 142 143if [ x$reason = xPREINIT6 ]; then 144 # Ensure interface is up. 145 ifconfig ${interface} up 146 147 # XXX: Remove any stale addresses from aborted clients. 148 149 exit_with_hooks 0 150fi 151 152if [ x${old_ip6_prefix} != x ] || [ x${new_ip6_prefix} != x ]; then 153 echo Prefix $reason old=${old_ip6_prefix} new=${new_ip6_prefix} 154 155 exit_with_hooks 0 156fi 157 158if [ x$reason = xBOUND6 ]; then 159 if [ x${new_ip6_address} = x ] || [ x${new_ip6_prefixlen} = x ]; then 160 exit_with_hooks 2; 161 fi 162 163 ifconfig ${interface} inet6 ${new_ip6_address}/${new_ip6_prefixlen} alias 164 165 # Check for nameserver options. 166 make_resolv_conf 167 168 exit_with_hooks 0 169fi 170 171if [ x$reason = xRENEW6 ] || [ x$reason = xREBIND6 ]; then 172 # Make sure nothing has moved around on us. 173 174 # Nameservers/domains/etc. 175 if [ "x${new_dhcp6_name_servers}" != "x${old_dhcp6_name_servers}" ] || 176 [ "x${new_dhcp6_domain_search}" != "x${old_dhcp6_domain_search}" ]; then 177 make_resolv_conf 178 fi 179 180 exit_with_hooks 0 181fi 182 183if [ x$reason = xDEPREF6 ]; then 184 if [ x${new_ip6_address} = x ]; then 185 exit_with_hooks 2; 186 fi 187 188 ifconfig ${interface} inet6 ${new_ip6_address} deprecated 189 190 exit_with_hooks 0 191fi 192 193if [ x$reason = xEXPIRE6 -o x$reason = xRELEASE6 -o x$reason = xSTOP6 ]; then 194 if [ x${old_ip6_address} = x ] || [ x${old_ip6_prefixlen} = x ]; then 195 exit_with_hooks 2; 196 fi 197 198 ifconfig ${interface} inet6 ${old_ip6_address}/${old_ip6_prefixlen} -alias 199 200 exit_with_hooks 0 201fi 202 203if [ $to_commit = yes ]; then 204 commit_resolv_conf 205fi 206 207exit_with_hooks 0 208