Annotation of src/etc/netstart, Revision 1.58
1.1 deraadt 1: #!/bin/sh -
2: #
1.58 ! itojun 3: # $OpenBSD: netstart,v 1.57 2000/01/02 05:21:55 itojun 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 $hostname localhost
44: route -n add -net 127 127.0.0.1 -reject
1.24 kstailey 45:
1.54 itojun 46: if ifconfig lo0 inet6 >/dev/null 2>&1; then
47: # IPv6 configurations.
48: ip6kernel=YES
49:
50: # disallow scoped unicast dest without outgoing scope identifiers.
51: route add -inet6 fe80:: -prefixlen 10 ::1 -reject
52: route add -inet6 fc80:: -prefixlen 10 ::1 -reject
53: # disallow "internal" addresses to appear on the wire.
54: route add -inet6 ::ffff:0.0.0.0 -prefixlen 96 ::1 -reject
55: route add -inet6 ::0.0.0.0 -prefixlen 96 ::1 -reject
1.56 itojun 56:
57: rtsolif=""
1.54 itojun 58: else
59: ip6kernel=NO
60: fi
61:
1.24 kstailey 62: # configure all of the non-loopback interfaces which we know about.
1.50 deraadt 63: # refer to hostname.if(5) and bridgename.if(5)
1.47 niklas 64: for hn in /etc/hostname.*; do
65: # Strip off /etc/hostname. prefix
66: if=${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
1.55 todd 71: continue
1.49 angelos 72: fi
1.50 deraadt 73: ifconfig $if > /dev/null 2>&1
1.49 angelos 74: if [ "$?" != "0" ]; then
75: continue
1.47 niklas 76: fi
77:
78: # Now parse the hostname.* file
1.55 todd 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
1.50 deraadt 91: # $af can be either "dhcp", "up" or an address family.
1.47 niklas 92: case "$af" in
93: "bridge")
1.50 deraadt 94: cmd="echo ${hn}: bridges now supported via bridgename.* files"
95: ;;
1.47 niklas 96: "dhcp")
1.55 todd 97: ifconfig $if $name $mask $bcaddr $ext1 $ext2 down
1.50 deraadt 98: cmd="dhclient $if"
1.47 niklas 99: ;;
1.56 itojun 100: "rtsol")
1.58 ! itojun 101: ifconfig $if $name $mask $bcaddr $ext1 $ext2 down
1.56 itojun 102: rtsolif="$rtsolif $if"
103: ;;
1.47 niklas 104: "up")
105: # The only one of these guaranteed to be set is $if
1.50 deraadt 106: # the remaining ones exist so that media controls work
1.55 todd 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=
1.47 niklas 119: fi
1.55 todd 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: ;;
1.47 niklas 148: esac
149: eval "$cmd"
1.55 todd 150: done < /etc/hostname.$if
1.50 deraadt 151: done
1.56 itojun 152:
153: if [ "$ip6kernel" = "YES" -a "x$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
1.57 itojun 157: echo "IPv6 autoconf:$rtsolif"
1.56 itojun 158: rtsol $rtsolif
159: else
160: echo "WARNING: inconsistent config - check /etc/sysctl.conf for IPv6 autoconf"
161: fi
1.57 itojun 162: fi
163: if [ "$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
1.56 itojun 167: fi
168:
1.50 deraadt 169: for 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
1.51 deraadt 187: line=${line%%#*} # strip comments
188: test -z "$line" && continue
1.50 deraadt 189: brconfig $if $line
190: done
191: } < /etc/bridgename.$if
1.47 niklas 192: done
1.1 deraadt 193:
1.14 deraadt 194: # /etc/mygate, if it exists, contains the name of my gateway host
195: # that name must be in /etc/hosts.
1.42 marc 196: if [ -f /etc/mygate ]; then
1.38 deraadt 197: route -n add -host default `cat /etc/mygate`
1.14 deraadt 198: fi
1.44 deraadt 199:
1.48 niklas 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
208: case "$multicast_host:$multicast_router" in
209: NO:NO)
210: route -n add -net 224.0.0.0/4 -interface 127.0.0.1 -reject;;
211: NO:YES)
212: ;;
213: *:NO)
214: set `if [ $multicast_host = YES ]; then
215: ed -s '!route -n show' <<EOF
216: /^default/p
217: EOF
218: else
219: ed -s "!ifconfig $multicast_host" <<EOF
220: /^ inet /p
221: EOF
222: fi`
223: route -n add -net 224.0.0.0/4 -interface $2;;
224: *:*)
225: echo 'config error, multicasting disabled until rc.conf is fixed'
226: route -n add -net 224.0.0.0/4 -interface 127.0.0.1 -reject;;
227: esac
1.53 itojun 228:
1.44 deraadt 229: # Configure NAT after configuring network interfaces
230: if [ "${ipnat}" = "YES" -a "${ipfilter}" = "YES" -a -f "${ipnat_rules}" ]; then
231: echo 'configuring NAT'
232: ipnat -CF -f ${ipnat_rules}
233: else
234: ipnat=NO
235: fi
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