netstart revision 1.60
1#!/bin/sh - 2# 3# $OpenBSD: netstart,v 1.60 2000/01/02 06:42:13 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 cmd= 104 ;; 105 "up") 106 # The only one of these guaranteed to be set is $if 107 # the remaining ones exist so that media controls work 108 cmd="ifconfig $if $name $mask $bcaddr $ext1 $ext2 up" 109 ;; 110 *) 111 read dt dtaddr 112 if [ "$name" = "alias" ]; then 113 # perform a 'shift' of sorts 114 alias=$name 115 name=$mask 116 mask=$bcaddr 117 bcaddr=$ext1 118 ext1=$ext2 119 ext2= 120 fi 121 cmd="ifconfig $if $af $alias $name " 122 case $dt in 123 dest) 124 cmd="$cmd $dtaddr" 125 ;; 126 [a-z]*) 127 cmd2="$dt $dtaddr" 128 ;; 129 esac 130 if [ ! -n "$name" ]; then 131 echo "/etc/hostname.$if: invalid network configuration file" 132 return 133 fi 134 case $af in 135 inet) 136 [ "$mask" ] && cmd="$cmd netmask $mask" 137 if [ "$bcaddr" -a "X$bcaddr" != "XNONE" ]; then 138 cmd="$cmd broadcast $bcaddr" 139 fi 140 [ "$alias" ] && rtcmd="; route -n add -host $name 127.0.0.1" 141 ;; 142 inet6) [ "$mask" ] && cmd="$cmd prefixlen $mask" 143 cmd="$cmd $bcaddr" 144 ;; 145 *) cmd="$cmd $mask $bcaddr" 146 esac 147 cmd="$cmd $ext1 $ext2$rtcmd" rtcmd= 148 ;; 149 esac 150 eval "$cmd" 151 done < /etc/hostname.$if 152done 153 154if [ "$ip6kernel" = "YES" -a "x$rtsolif" != "x" ]; then 155 fw=`sysctl -n net.inet6.ip6.forwarding` 156 ra=`sysctl -n net.inet6.ip6.accept_rtadv` 157 if [ "x$fw" = "x0" -a "x$ra" = "x1" ]; then 158 echo "IPv6 autoconf:$rtsolif" 159 rtsol $rtsolif 160 else 161 echo "WARNING: inconsistent config - check /etc/sysctl.conf for IPv6 autoconf" 162 fi 163fi 164if [ "$ip6kernel" = "YES" ]; then 165 # this is to make sure DAD is completed before going further. 166 sleep `sysctl -n net.inet6.ip6.dad_count` 167 sleep 1 168fi 169 170for bn in /etc/bridgename.*; do 171 # Strip off /etc/bridgename. prefix 172 if=${bn#/etc/bridgename.} 173 174 # Interface names must be alphanumeric only. We check to avoid 175 # configuring backup or temp files, and to catch the "*" case. 176 if ! isalphanumeric "$if"; then 177 continue 178 fi 179 brconfig $if > /dev/null 2>&1 180 if [ "$?" != "0" ]; then 181 continue 182 fi 183 184 # Now parse the bridgename.* file 185 { 186 # All lines are run as brconfig(8) commands. 187 while read line ; do 188 line=${line%%#*} # strip comments 189 test -z "$line" && continue 190 brconfig $if $line 191 done 192 } < /etc/bridgename.$if 193done 194 195# /etc/mygate, if it exists, contains the name of my gateway host 196# that name must be in /etc/hosts. 197if [ -f /etc/mygate ]; then 198 route -n add -host default `cat /etc/mygate` 199fi 200 201# Multicast routing. 202# 203# The routing to the 224.0.0.0/4 net is setup according to these rules: 204# multicast_host multicast_router route comment 205# NO NO -reject no multicast 206# NO YES none installed daemon will run 207# YES/interface NO -interface YES=def. iface 208# Any other combination -reject config error 209case "$multicast_host:$multicast_router" in 210NO:NO) 211 route -n add -net 224.0.0.0/4 -interface 127.0.0.1 -reject;; 212NO:YES) 213 ;; 214*:NO) 215 set `if [ $multicast_host = YES ]; then 216 ed -s '!route -n show' <<EOF 217/^default/p 218EOF 219 else 220 ed -s "!ifconfig $multicast_host" <<EOF 221/^ inet /p 222EOF 223 fi` 224 route -n add -net 224.0.0.0/4 -interface $2;; 225*:*) 226 echo 'config error, multicasting disabled until rc.conf is fixed' 227 route -n add -net 224.0.0.0/4 -interface 127.0.0.1 -reject;; 228esac 229 230# Configure NAT after configuring network interfaces 231if [ "${ipnat}" = "YES" -a "${ipfilter}" = "YES" -a -f "${ipnat_rules}" ]; then 232 echo 'configuring NAT' 233 ipnat -CF -f ${ipnat_rules} 234else 235 ipnat=NO 236fi 237