Annotation of src/etc/netstart, Revision 1.65
1.1 deraadt 1: #!/bin/sh -
2: #
1.65 ! itojun 3: # $OpenBSD: netstart,v 1.64 2000/03/10 13:21:51 todd Exp $
1.45 millert 4:
5: # Returns true if $1 contains only alphanumerics
6: isalphanumeric() {
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: }
1.1 deraadt 18:
19: # /etc/myname contains my symbolic name
20: #
21: hostname=`cat /etc/myname`
22: hostname $hostname
23: if [ -f /etc/defaultdomain ]; then
24: domainname `cat /etc/defaultdomain`
1.4 dm 25: fi
1.30 deraadt 26:
27: # pick up option configuration
28: . /etc/rc.conf
1.4 dm 29:
30: # Configure the IP filter before configuring network interfaces
31: if [ X"${ipfilter}" = X"YES" -a -f "${ipfilter_rules}" ]; then
32: echo 'configuring IP filter'
33: ipf -Fa -f ${ipfilter_rules} -E
34: else
35: ipfilter=NO
1.1 deraadt 36: fi
1.17 kstailey 37:
1.24 kstailey 38: # set the address for the loopback interface
1.52 itojun 39: # it will also initialize IPv6 address for lo0 (::1 and others).
1.24 kstailey 40: ifconfig lo0 inet localhost
1.1 deraadt 41:
1.24 kstailey 42: # use loopback, not the wire
1.38 deraadt 43: route -n add -host $hostname localhost
44: route -n add -net 127 127.0.0.1 -reject
1.24 kstailey 45:
1.54 itojun 46: if ifconfig lo0 inet6 >/dev/null 2>&1; then
47: # IPv6 configurations.
48: ip6kernel=YES
49:
50: # disallow scoped unicast dest without outgoing scope identifiers.
51: route add -inet6 fe80:: -prefixlen 10 ::1 -reject
52: route add -inet6 fc80:: -prefixlen 10 ::1 -reject
53: # disallow "internal" addresses to appear on the wire.
54: route add -inet6 ::ffff:0.0.0.0 -prefixlen 96 ::1 -reject
55: route add -inet6 ::0.0.0.0 -prefixlen 96 ::1 -reject
1.65 ! itojun 56: # disallow packets to malicious 6to4 prefix
! 57: route add -inet6 2002:e000:: -prefixlen 20 ::1 -reject
! 58: route add -inet6 2002:7f00:: -prefixlen 24 ::1 -reject
! 59: route add -inet6 2002:0000:0000:: -prefixlen 48 ::1 -reject
! 60: route add -inet6 2002:ffff:ffff:: -prefixlen 48 ::1 -reject
1.56 itojun 61:
62: rtsolif=""
1.54 itojun 63: else
64: ip6kernel=NO
65: fi
66:
1.24 kstailey 67: # configure all of the non-loopback interfaces which we know about.
1.50 deraadt 68: # refer to hostname.if(5) and bridgename.if(5)
1.47 niklas 69: for hn in /etc/hostname.*; do
70: # Strip off /etc/hostname. prefix
71: if=${hn#/etc/hostname.}
72:
73: # Interface names must be alphanumeric only. We check to avoid
74: # configuring backup or temp files, and to catch the "*" case.
75: if ! isalphanumeric "$if"; then
1.55 todd 76: continue
1.49 angelos 77: fi
1.50 deraadt 78: ifconfig $if > /dev/null 2>&1
1.49 angelos 79: if [ "$?" != "0" ]; then
80: continue
1.47 niklas 81: fi
82:
83: # Now parse the hostname.* file
1.55 todd 84: while :; do
85: if [ "$cmd2" ]; then
86: # we are carrying over from the 'read dt dtaddr' last time
87: set -- $cmd2
88: af="$1" name="$2" mask="$3" bcaddr="$4" ext1="$5" ext2="$6"
89: cmd2=
90: else
91: # read the next line or exit the while loop
92: read af name mask bcaddr ext1 ext2 || break
93: fi
1.63 todd 94: # $af can be "dhcp", "up", "rtsol", an address family, commands, or
95: # a comment.
1.47 niklas 96: case "$af" in
1.63 todd 97: "#"*) # skip comments
98: continue
99: ;;
100: "!"*) # parse commands
101: cmd="${af#*!} ${name} ${mask} ${bcaddr} ${ext1} ${ext2}"
102: ;;
1.47 niklas 103: "bridge")
1.50 deraadt 104: cmd="echo ${hn}: bridges now supported via bridgename.* files"
105: ;;
1.47 niklas 106: "dhcp")
1.55 todd 107: ifconfig $if $name $mask $bcaddr $ext1 $ext2 down
1.50 deraadt 108: cmd="dhclient $if"
1.47 niklas 109: ;;
1.56 itojun 110: "rtsol")
1.62 deraadt 111: ifconfig $if $name $mask $bcaddr $ext1 $ext2 up
1.56 itojun 112: rtsolif="$rtsolif $if"
1.59 todd 113: cmd=
1.56 itojun 114: ;;
1.47 niklas 115: "up")
116: # The only one of these guaranteed to be set is $if
1.50 deraadt 117: # the remaining ones exist so that media controls work
1.55 todd 118: cmd="ifconfig $if $name $mask $bcaddr $ext1 $ext2 up"
119: ;;
120: *)
121: read dt dtaddr
122: if [ "$name" = "alias" ]; then
123: # perform a 'shift' of sorts
124: alias=$name
125: name=$mask
126: mask=$bcaddr
127: bcaddr=$ext1
128: ext1=$ext2
129: ext2=
1.47 niklas 130: fi
1.55 todd 131: cmd="ifconfig $if $af $alias $name "
1.64 todd 132: case "$dt" in
1.55 todd 133: dest)
134: cmd="$cmd $dtaddr"
135: ;;
1.64 todd 136: [a-z!]*)
1.55 todd 137: cmd2="$dt $dtaddr"
138: ;;
1.60 itojun 139: esac
140: if [ ! -n "$name" ]; then
1.55 todd 141: echo "/etc/hostname.$if: invalid network configuration file"
142: return
1.60 itojun 143: fi
144: case $af in
145: inet)
1.55 todd 146: [ "$mask" ] && cmd="$cmd netmask $mask"
147: if [ "$bcaddr" -a "X$bcaddr" != "XNONE" ]; then
148: cmd="$cmd broadcast $bcaddr"
149: fi
150: [ "$alias" ] && rtcmd="; route -n add -host $name 127.0.0.1"
1.61 itojun 151: ;;
1.60 itojun 152: inet6) [ "$mask" ] && cmd="$cmd prefixlen $mask"
1.55 todd 153: cmd="$cmd $bcaddr"
154: ;;
1.60 itojun 155: *) cmd="$cmd $mask $bcaddr"
156: esac
157: cmd="$cmd $ext1 $ext2$rtcmd" rtcmd=
158: ;;
1.47 niklas 159: esac
160: eval "$cmd"
1.55 todd 161: done < /etc/hostname.$if
1.50 deraadt 162: done
1.56 itojun 163:
164: if [ "$ip6kernel" = "YES" -a "x$rtsolif" != "x" ]; then
165: fw=`sysctl -n net.inet6.ip6.forwarding`
166: ra=`sysctl -n net.inet6.ip6.accept_rtadv`
167: if [ "x$fw" = "x0" -a "x$ra" = "x1" ]; then
1.57 itojun 168: echo "IPv6 autoconf:$rtsolif"
1.56 itojun 169: rtsol $rtsolif
170: else
171: echo "WARNING: inconsistent config - check /etc/sysctl.conf for IPv6 autoconf"
172: fi
1.57 itojun 173: fi
174: if [ "$ip6kernel" = "YES" ]; then
175: # this is to make sure DAD is completed before going further.
176: sleep `sysctl -n net.inet6.ip6.dad_count`
177: sleep 1
1.56 itojun 178: fi
179:
1.50 deraadt 180: for bn in /etc/bridgename.*; do
181: # Strip off /etc/bridgename. prefix
182: if=${bn#/etc/bridgename.}
183:
184: # Interface names must be alphanumeric only. We check to avoid
185: # configuring backup or temp files, and to catch the "*" case.
186: if ! isalphanumeric "$if"; then
187: continue
188: fi
189: brconfig $if > /dev/null 2>&1
190: if [ "$?" != "0" ]; then
191: continue
192: fi
193:
194: # Now parse the bridgename.* file
195: {
196: # All lines are run as brconfig(8) commands.
197: while read line ; do
1.51 deraadt 198: line=${line%%#*} # strip comments
199: test -z "$line" && continue
1.50 deraadt 200: brconfig $if $line
201: done
202: } < /etc/bridgename.$if
1.47 niklas 203: done
1.1 deraadt 204:
1.14 deraadt 205: # /etc/mygate, if it exists, contains the name of my gateway host
206: # that name must be in /etc/hosts.
1.42 marc 207: if [ -f /etc/mygate ]; then
1.38 deraadt 208: route -n add -host default `cat /etc/mygate`
1.14 deraadt 209: fi
1.44 deraadt 210:
1.48 niklas 211: # Multicast routing.
212: #
213: # The routing to the 224.0.0.0/4 net is setup according to these rules:
214: # multicast_host multicast_router route comment
215: # NO NO -reject no multicast
216: # NO YES none installed daemon will run
217: # YES/interface NO -interface YES=def. iface
218: # Any other combination -reject config error
219: case "$multicast_host:$multicast_router" in
220: NO:NO)
221: route -n add -net 224.0.0.0/4 -interface 127.0.0.1 -reject;;
222: NO:YES)
223: ;;
224: *:NO)
225: set `if [ $multicast_host = YES ]; then
226: ed -s '!route -n show' <<EOF
227: /^default/p
228: EOF
229: else
230: ed -s "!ifconfig $multicast_host" <<EOF
231: /^ inet /p
232: EOF
233: fi`
234: route -n add -net 224.0.0.0/4 -interface $2;;
235: *:*)
236: echo 'config error, multicasting disabled until rc.conf is fixed'
237: route -n add -net 224.0.0.0/4 -interface 127.0.0.1 -reject;;
238: esac
1.53 itojun 239:
1.44 deraadt 240: # Configure NAT after configuring network interfaces
241: if [ "${ipnat}" = "YES" -a "${ipfilter}" = "YES" -a -f "${ipnat_rules}" ]; then
242: echo 'configuring NAT'
243: ipnat -CF -f ${ipnat_rules}
244: else
245: ipnat=NO
246: fi
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