Annotation of src/etc/netstart, Revision 1.51
1.1 deraadt 1: #!/bin/sh -
2: #
1.51 ! deraadt 3: # $OpenBSD: netstart,v 1.50 1999/09/01 05:07:50 deraadt 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
39: ifconfig lo0 inet localhost
1.1 deraadt 40:
1.24 kstailey 41: # use loopback, not the wire
1.38 deraadt 42: route -n add -host $hostname localhost
43: route -n add -net 127 127.0.0.1 -reject
1.24 kstailey 44:
45: # configure all of the non-loopback interfaces which we know about.
1.50 deraadt 46: # refer to hostname.if(5) and bridgename.if(5)
1.47 niklas 47: for hn in /etc/hostname.*; do
48: # Strip off /etc/hostname. prefix
49: if=${hn#/etc/hostname.}
50:
51: # Interface names must be alphanumeric only. We check to avoid
52: # configuring backup or temp files, and to catch the "*" case.
53: if ! isalphanumeric "$if"; then
54: continue
1.49 angelos 55: fi
1.50 deraadt 56: ifconfig $if > /dev/null 2>&1
1.49 angelos 57: if [ "$?" != "0" ]; then
58: continue
1.47 niklas 59: fi
60:
61: # Now parse the hostname.* file
62: {
63: read af name mask bcaddr extras
64:
1.50 deraadt 65: # $af can be either "dhcp", "up" or an address family.
1.47 niklas 66: case "$af" in
67: "bridge")
1.50 deraadt 68: cmd="echo ${hn}: bridges now supported via bridgename.* files"
69: ;;
1.47 niklas 70: "dhcp")
1.50 deraadt 71: ifconfig $if $name $mask $bcaddr $extras down
72: cmd="dhclient $if"
1.47 niklas 73: ;;
74: "up")
75: # The only one of these guaranteed to be set is $if
1.50 deraadt 76: # the remaining ones exist so that media controls work
1.47 niklas 77: cmd="ifconfig $if $name $mask $bcaddr $extras up"
78: ;;
79: *)
1.31 deraadt 80: read dt dtaddr
1.47 niklas 81: if [ ! -n "$name" ]; then
82: echo "/etc/hostname.$if: invalid network configuration file"
1.50 deraadt 83: continue
1.47 niklas 84: fi
1.1 deraadt 85:
1.47 niklas 86: cmd="ifconfig $if $af $name "
87: if [ "${dt}" = "dest" ]; then cmd="$cmd $dtaddr"; fi
88: if [ -n "$mask" ]; then cmd="$cmd netmask $mask"; fi
89: if [ -n "$bcaddr" -a "X$bcaddr" != "XNONE" ]; then
90: cmd="$cmd broadcast $bcaddr";
1.1 deraadt 91: fi
1.47 niklas 92: cmd="$cmd $extras";
93: ;;
94: esac
95:
96: eval "$cmd"
97: } < /etc/hostname.$if
1.50 deraadt 98: done
99: for bn in /etc/bridgename.*; do
100: # Strip off /etc/bridgename. prefix
101: if=${bn#/etc/bridgename.}
102:
103: # Interface names must be alphanumeric only. We check to avoid
104: # configuring backup or temp files, and to catch the "*" case.
105: if ! isalphanumeric "$if"; then
106: continue
107: fi
108: brconfig $if > /dev/null 2>&1
109: if [ "$?" != "0" ]; then
110: continue
111: fi
112:
113: # Now parse the bridgename.* file
114: {
115: # All lines are run as brconfig(8) commands.
116: while read line ; do
1.51 ! deraadt 117: line=${line%%#*} # strip comments
! 118: test -z "$line" && continue
1.50 deraadt 119: brconfig $if $line
120: done
121: } < /etc/bridgename.$if
1.47 niklas 122: done
1.1 deraadt 123:
1.14 deraadt 124: # /etc/mygate, if it exists, contains the name of my gateway host
125: # that name must be in /etc/hosts.
1.42 marc 126: if [ -f /etc/mygate ]; then
1.38 deraadt 127: route -n add -host default `cat /etc/mygate`
1.14 deraadt 128: fi
1.44 deraadt 129:
1.48 niklas 130: # Multicast routing.
131: #
132: # The routing to the 224.0.0.0/4 net is setup according to these rules:
133: # multicast_host multicast_router route comment
134: # NO NO -reject no multicast
135: # NO YES none installed daemon will run
136: # YES/interface NO -interface YES=def. iface
137: # Any other combination -reject config error
138: case "$multicast_host:$multicast_router" in
139: NO:NO)
140: route -n add -net 224.0.0.0/4 -interface 127.0.0.1 -reject;;
141: NO:YES)
142: ;;
143: *:NO)
144: set `if [ $multicast_host = YES ]; then
145: ed -s '!route -n show' <<EOF
146: /^default/p
147: EOF
148: else
149: ed -s "!ifconfig $multicast_host" <<EOF
150: /^ inet /p
151: EOF
152: fi`
153: route -n add -net 224.0.0.0/4 -interface $2;;
154: *:*)
155: echo 'config error, multicasting disabled until rc.conf is fixed'
156: route -n add -net 224.0.0.0/4 -interface 127.0.0.1 -reject;;
157: esac
158:
1.44 deraadt 159: # Configure NAT after configuring network interfaces
160: if [ "${ipnat}" = "YES" -a "${ipfilter}" = "YES" -a -f "${ipnat_rules}" ]; then
161: echo 'configuring NAT'
162: ipnat -CF -f ${ipnat_rules}
163: else
164: ipnat=NO
165: fi
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