Annotation of src/etc/netstart, Revision 1.137
1.1 deraadt 1: #!/bin/sh -
2: #
1.137 ! rpe 3: # $OpenBSD: netstart,v 1.136 2012/12/02 21:02:45 rpe Exp $
1.101 millert 4:
5: # Strip comments (and leading/trailing whitespace if IFS is set)
6: # from a file and spew to stdout
7: stripcom() {
1.108 todd 8: local _l
1.110 todd 9: [[ -f $1 ]] || return
1.108 todd 10: while read _l; do
11: [[ -n ${_l%%#*} ]] && echo $_l
12: done<$1
1.101 millert 13: }
1.45 millert 14:
1.83 miod 15: # Start the $1 interface
16: ifstart() {
1.84 deraadt 17: if=$1
1.83 miod 18: # Interface names must be alphanumeric only. We check to avoid
19: # configuring backup or temp files, and to catch the "*" case.
1.137 ! rpe 20: [[ $if != +([[:alpha:]])+([[:digit:]]) ]] && return
1.83 miod 21:
1.119 deraadt 22: file=/etc/hostname.$if
1.121 todd 23: if ! [ -f $file ]; then
24: echo "netstart: $file: No such file or directory"
25: return
26: fi
1.123 sthen 27: # Not using stat(1), we can't rely on having /usr yet
28: set -A stat -- `ls -nL $file`
29: if [ "${stat[0]#???????} ${stat[2]} ${stat[3]}" != "--- 0 0" ]; then
1.119 deraadt 30: echo "WARNING: $file is insecure, fixing permissions"
1.122 sthen 31: chmod -LR o-rwx $file
32: chown -LR root.wheel $file
1.119 deraadt 33: fi
1.136 rpe 34: # Check for ifconfig'able interface.
35: (ifconfig $if || ifconfig $if create) >/dev/null 2>&1 || return
1.83 miod 36:
37: # Now parse the hostname.* file
38: while :; do
39: if [ "$cmd2" ]; then
40: # We are carrying over from the 'read dt dtaddr'
41: # last time.
42: set -- $cmd2
43: af="$1" name="$2" mask="$3" bcaddr="$4" ext1="$5" cmd2=
44: # Make sure and get any remaining args in ext2,
45: # like the read below
46: i=1
1.126 simon 47: while [ $i -lt 6 -a -n "$1" ]; do shift; let i=i+1; done
1.83 miod 48: ext2="$@"
49: else
50: # Read the next line or exit the while loop.
51: read af name mask bcaddr ext1 ext2 || break
52: fi
53: # $af can be "dhcp", "up", "rtsol", an address family,
54: # commands, or a comment.
55: case "$af" in
56: "#"*|"") # skip comments and empty lines
57: continue
58: ;;
59: "!"*) # parse commands
60: cmd="${af#*!} ${name} ${mask} ${bcaddr} ${ext1} ${ext2}"
61: ;;
62: "dhcp")
63: [ "$name" = "NONE" ] && name=
64: [ "$mask" = "NONE" ] && mask=
65: [ "$bcaddr" = "NONE" ] && bcaddr=
1.106 todd 66: cmd="ifconfig $if $name $mask $bcaddr $ext1 $ext2 down"
67: cmd="$cmd;dhclient $if"
1.110 todd 68: dhcpif="$dhcpif $if"
1.83 miod 69: ;;
70: "rtsol")
1.84 deraadt 71: rtsolif="$rtsolif $if"
1.106 todd 72: cmd="ifconfig $if $name $mask $bcaddr $ext1 $ext2 up"
1.83 miod 73: ;;
74: *)
75: read dt dtaddr
76: if [ "$name" = "alias" ]; then
77: # perform a 'shift' of sorts
78: alias=$name
79: name=$mask
80: mask=$bcaddr
81: bcaddr=$ext1
82: ext1=$ext2
83: ext2=
84: else
85: alias=
86: fi
1.114 todd 87: cmd="ifconfig $if $af $alias $name"
1.83 miod 88: case "$dt" in
89: dest)
90: cmd="$cmd $dtaddr"
91: ;;
1.130 todd 92: *)
1.83 miod 93: cmd2="$dt $dtaddr"
94: ;;
95: esac
96: case $af in
97: inet)
1.128 todd 98: if [ ! -n "$name" ]; then
99: echo "/etc/hostname.$if: inet alone is invalid"
100: return
101: fi
1.83 miod 102: [ "$mask" ] && cmd="$cmd netmask $mask"
103: if [ "$bcaddr" -a "X$bcaddr" != "XNONE" ]; then
104: cmd="$cmd broadcast $bcaddr"
105: fi
1.91 deraadt 106: [ "$alias" ] && rtcmd=";route -qn add -host $name 127.0.0.1"
1.83 miod 107: ;;
1.128 todd 108: inet6)
109: if [ ! -n "$name" ]; then
110: echo "/etc/hostname.$if: inet6 alone is invalid"
111: return
112: fi
113: [ "$mask" ] && cmd="$cmd prefixlen $mask"
1.83 miod 114: cmd="$cmd $bcaddr"
115: ;;
116: *)
117: cmd="$cmd $mask $bcaddr"
118: ;;
119: esac
120: cmd="$cmd $ext1 $ext2$rtcmd" rtcmd=
121: ;;
122: esac
123: eval "$cmd"
1.84 deraadt 124: done < /etc/hostname.$if
1.83 miod 125: }
126:
1.105 todd 127: # Start multiple:
128: # start "$1" interfaces in order or all interfaces if empty
129: # don't start "$2" interfaces
130: ifmstart() {
131: for sif in ${1:-ALL}; do
132: for hn in /etc/hostname.*; do
133: # Strip off /etc/hostname. prefix
134: if=${hn#/etc/hostname.}
135: test "$if" = "*" && continue
1.113 david 136:
1.105 todd 137: # Skip unwanted ifs
1.113 david 138: s=""
1.105 todd 139: for xf in $2; do
140: test "$xf" = "${if%%[0-9]*}" && s="1" && break
141: done
142: test "$s" = "1" && continue
143:
144: # Start wanted ifs
145: test "$sif" = "ALL" -o \
146: "$sif" = "${if%%[0-9]*}" \
147: && ifstart $if
148: done
149: done
150: }
151:
1.81 angelos 152: # Re-read /etc/rc.conf
153: . /etc/rc.conf
1.1 deraadt 154:
1.83 miod 155: # If we were invoked with a list of interface names, just reconfigure these
156: # interfaces (or bridges) and return.
1.135 rpe 157: if [[ $1 == autoboot ]]; then
1.83 miod 158: shift
159: fi
160: if [ $# -gt 0 ]; then
161: while [ $# -gt 0 ]; do
1.127 deraadt 162: ifstart $1
1.83 miod 163: shift
164: done
165: return
166: fi
167:
168: # Otherwise, process with the complete network initialization.
169:
1.1 deraadt 170: # /etc/myname contains my symbolic name
1.87 henning 171: if [ -f /etc/myname ]; then
1.100 millert 172: hostname=`stripcom /etc/myname`
1.87 henning 173: hostname $hostname
174: else
175: hostname=`hostname`
1.4 dm 176: fi
177:
1.131 sobrado 178: # Set the address for the loopback interface. Bringing the interface up,
179: # automatically invokes the IPv6 address ::1.
1.129 henning 180: ifconfig lo0 inet 127.0.0.1/8
1.24 kstailey 181:
1.54 itojun 182: if ifconfig lo0 inet6 >/dev/null 2>&1; then
183: # IPv6 configurations.
184: ip6kernel=YES
185:
1.83 miod 186: # Disallow link-local unicast dest without outgoing scope identifiers.
1.98 deraadt 187: route -qn add -inet6 fe80:: -prefixlen 10 ::1 -reject > /dev/null
1.66 itojun 188:
1.83 miod 189: # Disallow site-local unicast dest without outgoing scope identifiers.
1.66 itojun 190: # If you configure site-locals without scope id (it is permissible
191: # config for routers that are not on scope boundary), you may want
192: # to comment the line out.
1.98 deraadt 193: route -qn add -inet6 fec0:: -prefixlen 10 ::1 -reject > /dev/null
1.66 itojun 194:
1.83 miod 195: # Disallow "internal" addresses to appear on the wire.
1.98 deraadt 196: route -qn add -inet6 ::ffff:0.0.0.0 -prefixlen 96 ::1 -reject > /dev/null
1.66 itojun 197:
1.83 miod 198: # Disallow packets to malicious IPv4 compatible prefix.
1.98 deraadt 199: route -qn add -inet6 ::224.0.0.0 -prefixlen 100 ::1 -reject > /dev/null
200: route -qn add -inet6 ::127.0.0.0 -prefixlen 104 ::1 -reject > /dev/null
201: route -qn add -inet6 ::0.0.0.0 -prefixlen 104 ::1 -reject > /dev/null
202: route -qn add -inet6 ::255.0.0.0 -prefixlen 104 ::1 -reject > /dev/null
1.66 itojun 203:
1.83 miod 204: # Disallow packets to malicious 6to4 prefix.
1.98 deraadt 205: route -qn add -inet6 2002:e000:: -prefixlen 20 ::1 -reject > /dev/null
206: route -qn add -inet6 2002:7f00:: -prefixlen 24 ::1 -reject > /dev/null
207: route -qn add -inet6 2002:0000:: -prefixlen 24 ::1 -reject > /dev/null
208: route -qn add -inet6 2002:ff00:: -prefixlen 24 ::1 -reject > /dev/null
1.115 itojun 209:
210: # Disallow packets without scope identifier.
211: route -qn add -inet6 ff01:: -prefixlen 16 ::1 -reject > /dev/null
212: route -qn add -inet6 ff02:: -prefixlen 16 ::1 -reject > /dev/null
1.66 itojun 213:
214: # Completely disallow packets to IPv4 compatible prefix.
215: # This may conflict with RFC1933 under following circumstances:
216: # (1) An IPv6-only KAME node tries to originate packets to IPv4
1.77 deraadt 217: # compatible destination. The KAME node has no IPv4 compatible
1.66 itojun 218: # support. Under RFC1933, it should transmit native IPv6
219: # packets toward IPv4 compatible destination, hoping it would
220: # reach a router that forwards the packet toward auto-tunnel
221: # interface.
1.77 deraadt 222: # (2) An IPv6-only node originates a packet to an IPv4 compatible
1.66 itojun 223: # destination. A KAME node is acting as an IPv6 router, and
224: # asked to forward it.
1.77 deraadt 225: # Due to rare use of IPv4 compatible addresses, and security issues
1.66 itojun 226: # with it, we disable it by default.
1.98 deraadt 227: route -qn add -inet6 ::0.0.0.0 -prefixlen 96 ::1 -reject > /dev/null
1.56 itojun 228:
229: rtsolif=""
1.54 itojun 230: else
231: ip6kernel=NO
232: fi
233:
1.105 todd 234:
235: # Configure all the non-loopback interfaces which we know about, but
1.127 deraadt 236: # do not start interfaces which must be delayed. Refer to hostname.if(5)
1.132 mpf 237: ifmstart "" "trunk svlan vlan carp gif gre pfsync pppoe tun bridge"
1.56 itojun 238:
1.118 brad 239: # The trunk interfaces need to come up first in this list.
1.132 mpf 240: # The (s)vlan interfaces need to come up after trunk.
1.118 brad 241: # Configure all the carp interfaces which we know about before default route.
1.132 mpf 242: ifmstart "trunk svlan vlan carp"
1.118 brad 243:
1.56 itojun 244: if [ "$ip6kernel" = "YES" -a "x$rtsolif" != "x" ]; then
245: fw=`sysctl -n net.inet6.ip6.forwarding`
246: ra=`sysctl -n net.inet6.ip6.accept_rtadv`
247: if [ "x$fw" = "x0" -a "x$ra" = "x1" ]; then
1.57 itojun 248: echo "IPv6 autoconf:$rtsolif"
1.56 itojun 249: rtsol $rtsolif
250: else
251: echo "WARNING: inconsistent config - check /etc/sysctl.conf for IPv6 autoconf"
252: fi
1.57 itojun 253: fi
1.102 mcbride 254:
1.14 deraadt 255: # /etc/mygate, if it exists, contains the name of my gateway host
256: # that name must be in /etc/hosts.
1.110 todd 257: [[ -z $dhcpif ]] && stripcom /etc/mygate | while read gw; do
258: [[ $gw == @(*:*) ]] && continue
259: route -qn delete default > /dev/null 2>&1
260: route -qn add -host default $gw && break
261: done
262: [[ -z $rtsolif ]] && stripcom /etc/mygate | while read gw; do
263: [[ $gw == !(*:*) ]] && continue
264: route -qn delete -inet6 default > /dev/null 2>&1
265: route -qn add -host -inet6 default $gw && break
266: done
1.44 deraadt 267:
1.48 niklas 268: # Multicast routing.
269: #
270: # The routing to the 224.0.0.0/4 net is setup according to these rules:
271: # multicast_host multicast_router route comment
272: # NO NO -reject no multicast
273: # NO YES none installed daemon will run
274: # YES/interface NO -interface YES=def. iface
275: # Any other combination -reject config error
1.112 reyk 276: route -qn delete 224.0.0.0/4 > /dev/null 2>&1
1.48 niklas 277: case "$multicast_host:$multicast_router" in
278: NO:NO)
1.91 deraadt 279: route -qn add -net 224.0.0.0/4 -interface 127.0.0.1 -reject > /dev/null
1.67 deraadt 280: ;;
1.48 niklas 281: NO:YES)
282: ;;
283: *:NO)
1.112 reyk 284: maddr=`if [ "$multicast_host" = "YES" ]; then
1.91 deraadt 285: ed -s '!route -qn show -inet' <<EOF
1.48 niklas 286: /^default/p
287: EOF
288: else
289: ed -s "!ifconfig $multicast_host" <<EOF
290: /^ inet /p
291: EOF
1.112 reyk 292: fi 2> /dev/null`
293: if [ "X${maddr}" != "X" ]; then
294: set $maddr
295: route -qn add -net 224.0.0.0/4 -interface $2 > /dev/null
296: else
297: route -qn add -net 224.0.0.0/4 -interface \
298: 127.0.0.1 -reject > /dev/null
299: fi
1.67 deraadt 300: ;;
1.48 niklas 301: *:*)
302: echo 'config error, multicasting disabled until rc.conf is fixed'
1.91 deraadt 303: route -qn add -net 224.0.0.0/4 -interface 127.0.0.1 -reject > /dev/null
1.67 deraadt 304: ;;
1.48 niklas 305: esac
1.83 miod 306:
1.105 todd 307:
1.125 jdixon 308: # Configure PPPoE, GIF, GRE and TUN interfaces, delayed because they require
309: # routes to be set. TUN might depend on PPPoE, and GIF or GRE may depend on
310: # either of them.
1.127 deraadt 311: ifmstart "pppoe tun gif gre bridge"
1.92 deraadt 312:
1.99 itojun 313: # reject 127/8 other than 127.0.0.1
1.92 deraadt 314: route -qn add -net 127 127.0.0.1 -reject > /dev/null
1.116 david 315:
316: if [ "$ip6kernel" = "YES" ]; then
317: # this is to make sure DAD is completed before going further.
1.124 markus 318: count=0
319: while [ $((count++)) -lt 10 -a "x"`sysctl -n net.inet6.ip6.dad_pending` != "x0" ]; do
320: sleep 1
321: done
1.116 david 322: fi
![[BACK]](/icons/back.gif){kind=icon}
Return to netstart CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [local] / src / etc