netstart revision 1.58
1#!/bin/sh - 2# 3# $OpenBSD: netstart,v 1.58 2000/01/02 06:32:44 itojun Exp $ 4 5# Returns true if $1 contains only alphanumerics 6isalphanumeric() { 7 local _n 8 _n=$1 9 while [ ${#_n} != 0 ]; do 10 case $_n in 11 [A-Za-z0-9]*) ;; 12 *) return 1;; 13 esac 14 _n=${_n#?} 15 done 16 return 0 17} 18 19# /etc/myname contains my symbolic name 20# 21hostname=`cat /etc/myname` 22hostname $hostname 23if [ -f /etc/defaultdomain ]; then 24 domainname `cat /etc/defaultdomain` 25fi 26 27# pick up option configuration 28. /etc/rc.conf 29 30# Configure the IP filter before configuring network interfaces 31if [ X"${ipfilter}" = X"YES" -a -f "${ipfilter_rules}" ]; then 32 echo 'configuring IP filter' 33 ipf -Fa -f ${ipfilter_rules} -E 34else 35 ipfilter=NO 36fi 37 38# set the address for the loopback interface 39# it will also initialize IPv6 address for lo0 (::1 and others). 40ifconfig lo0 inet localhost 41 42# use loopback, not the wire 43route -n add -host $hostname localhost 44route -n add -net 127 127.0.0.1 -reject 45 46if ifconfig lo0 inet6 >/dev/null 2>&1; then 47 # IPv6 configurations. 48 ip6kernel=YES 49 50 # disallow scoped unicast dest without outgoing scope identifiers. 51 route add -inet6 fe80:: -prefixlen 10 ::1 -reject 52 route add -inet6 fc80:: -prefixlen 10 ::1 -reject 53 # disallow "internal" addresses to appear on the wire. 54 route add -inet6 ::ffff:0.0.0.0 -prefixlen 96 ::1 -reject 55 route add -inet6 ::0.0.0.0 -prefixlen 96 ::1 -reject 56 57 rtsolif="" 58else 59 ip6kernel=NO 60fi 61 62# configure all of the non-loopback interfaces which we know about. 63# refer to hostname.if(5) and bridgename.if(5) 64for hn in /etc/hostname.*; do 65 # Strip off /etc/hostname. prefix 66 if=${hn#/etc/hostname.} 67 68 # Interface names must be alphanumeric only. We check to avoid 69 # configuring backup or temp files, and to catch the "*" case. 70 if ! isalphanumeric "$if"; then 71 continue 72 fi 73 ifconfig $if > /dev/null 2>&1 74 if [ "$?" != "0" ]; then 75 continue 76 fi 77 78 # Now parse the hostname.* file 79 while :; do 80 if [ "$cmd2" ]; then 81 # we are carrying over from the 'read dt dtaddr' last time 82 set -- $cmd2 83 af="$1" name="$2" mask="$3" bcaddr="$4" ext1="$5" ext2="$6" 84 cmd2= 85 else 86 # read the next line or exit the while loop 87 read af name mask bcaddr ext1 ext2 || break 88 fi 89 # skip comments 90 [ "${af#*#}" = "${af}" ] || continue 91 # $af can be either "dhcp", "up" or an address family. 92 case "$af" in 93 "bridge") 94 cmd="echo ${hn}: bridges now supported via bridgename.* files" 95 ;; 96 "dhcp") 97 ifconfig $if $name $mask $bcaddr $ext1 $ext2 down 98 cmd="dhclient $if" 99 ;; 100 "rtsol") 101 ifconfig $if $name $mask $bcaddr $ext1 $ext2 down 102 rtsolif="$rtsolif $if" 103 ;; 104 "up") 105 # The only one of these guaranteed to be set is $if 106 # the remaining ones exist so that media controls work 107 cmd="ifconfig $if $name $mask $bcaddr $ext1 $ext2 up" 108 ;; 109 *) 110 read dt dtaddr 111 if [ "$name" = "alias" ]; then 112 # perform a 'shift' of sorts 113 alias=$name 114 name=$mask 115 mask=$bcaddr 116 bcaddr=$ext1 117 ext1=$ext2 118 ext2= 119 fi 120 cmd="ifconfig $if $af $alias $name " 121 case $dt in 122 dest) 123 cmd="$cmd $dtaddr" 124 ;; 125 [a-z]*) 126 cmd2="$dt $dtaddr" 127 ;; 128 esac 129 if [ ! -n "$name" ]; then 130 echo "/etc/hostname.$if: invalid network configuration file" 131 return 132 fi 133 case $af in 134 inet) 135 [ "$mask" ] && cmd="$cmd netmask $mask" 136 if [ "$bcaddr" -a "X$bcaddr" != "XNONE" ]; then 137 cmd="$cmd broadcast $bcaddr" 138 fi 139 [ "$alias" ] && rtcmd="; route -n add -host $name 127.0.0.1" 140 ;; 141 inet6) [ "$mask" ] && cmd="$cmd prefixlen $mask" 142 cmd="$cmd $bcaddr" 143 ;; 144 *) cmd="$cmd $mask $bcaddr" 145 esac 146 cmd="$cmd $ext1 $ext2$rtcmd" rtcmd= 147 ;; 148 esac 149 eval "$cmd" 150 done < /etc/hostname.$if 151done 152 153if [ "$ip6kernel" = "YES" -a "x$rtsolif" != "x" ]; then 154 fw=`sysctl -n net.inet6.ip6.forwarding` 155 ra=`sysctl -n net.inet6.ip6.accept_rtadv` 156 if [ "x$fw" = "x0" -a "x$ra" = "x1" ]; then 157 echo "IPv6 autoconf:$rtsolif" 158 rtsol $rtsolif 159 else 160 echo "WARNING: inconsistent config - check /etc/sysctl.conf for IPv6 autoconf" 161 fi 162fi 163if [ "$ip6kernel" = "YES" ]; then 164 # this is to make sure DAD is completed before going further. 165 sleep `sysctl -n net.inet6.ip6.dad_count` 166 sleep 1 167fi 168 169for bn in /etc/bridgename.*; do 170 # Strip off /etc/bridgename. prefix 171 if=${bn#/etc/bridgename.} 172 173 # Interface names must be alphanumeric only. We check to avoid 174 # configuring backup or temp files, and to catch the "*" case. 175 if ! isalphanumeric "$if"; then 176 continue 177 fi 178 brconfig $if > /dev/null 2>&1 179 if [ "$?" != "0" ]; then 180 continue 181 fi 182 183 # Now parse the bridgename.* file 184 { 185 # All lines are run as brconfig(8) commands. 186 while read line ; do 187 line=${line%%#*} # strip comments 188 test -z "$line" && continue 189 brconfig $if $line 190 done 191 } < /etc/bridgename.$if 192done 193 194# /etc/mygate, if it exists, contains the name of my gateway host 195# that name must be in /etc/hosts. 196if [ -f /etc/mygate ]; then 197 route -n add -host default `cat /etc/mygate` 198fi 199 200# Multicast routing. 201# 202# The routing to the 224.0.0.0/4 net is setup according to these rules: 203# multicast_host multicast_router route comment 204# NO NO -reject no multicast 205# NO YES none installed daemon will run 206# YES/interface NO -interface YES=def. iface 207# Any other combination -reject config error 208case "$multicast_host:$multicast_router" in 209NO:NO) 210 route -n add -net 224.0.0.0/4 -interface 127.0.0.1 -reject;; 211NO:YES) 212 ;; 213*:NO) 214 set `if [ $multicast_host = YES ]; then 215 ed -s '!route -n show' <<EOF 216/^default/p 217EOF 218 else 219 ed -s "!ifconfig $multicast_host" <<EOF 220/^ inet /p 221EOF 222 fi` 223 route -n add -net 224.0.0.0/4 -interface $2;; 224*:*) 225 echo 'config error, multicasting disabled until rc.conf is fixed' 226 route -n add -net 224.0.0.0/4 -interface 127.0.0.1 -reject;; 227esac 228 229# Configure NAT after configuring network interfaces 230if [ "${ipnat}" = "YES" -a "${ipfilter}" = "YES" -a -f "${ipnat_rules}" ]; then 231 echo 'configuring NAT' 232 ipnat -CF -f ${ipnat_rules} 233else 234 ipnat=NO 235fi 236