Annotation of src/etc/netstart, Revision 1.146
1.1 deraadt 1: #!/bin/sh -
2: #
1.146 ! rpe 3: # $OpenBSD: netstart,v 1.145 2015/06/06 13:13:07 florian Exp $
1.101 millert 4:
1.146 ! rpe 5: # Strip comments (and leading/trailing whitespace if IFS is set) from a file
! 6: # and spew to stdout.
1.101 millert 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:
1.146 ! rpe 15: # Start the $1 interface.
1.83 miod 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
1.146 ! rpe 27: # Not using stat(1), we can't rely on having /usr yet.
1.123 sthen 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 $if create) >/dev/null 2>&1 || return
1.83 miod 36:
1.146 ! rpe 37: # Now parse the hostname.* file.
1.83 miod 38: while :; do
39: if [ "$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,
1.146 ! rpe 45: # like the read below.
1.83 miod 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
1.146 ! rpe 53: # $af can be "dhcp", "up", "rtsol", an address family, commands,
! 54: # or a comment.
1.83 miod 55: case "$af" in
1.146 ! rpe 56: "#"*|"") # Skip comments and empty lines.
1.83 miod 57: continue
58: ;;
1.146 ! rpe 59: "!"*) # Parse commands.
1.83 miod 60: cmd="${af#*!} ${name} ${mask} ${bcaddr} ${ext1} ${ext2}"
61: ;;
62: "dhcp")
63: [ "$name" = "NONE" ] && name=
64: [ "$mask" = "NONE" ] && mask=
65: [ "$bcaddr" = "NONE" ] && bcaddr=
1.143 claudio 66: cmd="ifconfig $if $name $mask $bcaddr $ext1 $ext2 down"
1.106 todd 67: cmd="$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
1.146 ! rpe 77: # Perform a 'shift' of sorts.
1.83 miod 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 $bcaddr"
105: fi
106: ;;
1.128 todd 107: inet6)
108: if [ ! -n "$name" ]; then
109: echo "/etc/hostname.$if: inet6 alone is invalid"
110: return
111: fi
112: [ "$mask" ] && cmd="$cmd prefixlen $mask"
1.83 miod 113: cmd="$cmd $bcaddr"
114: ;;
115: *)
116: cmd="$cmd $mask $bcaddr"
117: ;;
118: esac
1.139 mpi 119: cmd="$cmd $ext1 $ext2"
1.83 miod 120: ;;
121: esac
122: eval "$cmd"
1.84 deraadt 123: done < /etc/hostname.$if
1.83 miod 124: }
125:
1.105 todd 126: # Start multiple:
1.146 ! rpe 127: # Usage: ifmstart "if1 if2" "if3 if4"
! 128: # Start "$1" interfaces in order or all interfaces if empty.
! 129: # Don't start "$2" interfaces.
1.105 todd 130: ifmstart() {
131: for sif in ${1:-ALL}; do
132: for hn in /etc/hostname.*; do
1.146 ! rpe 133: # Strip off /etc/hostname. prefix.
1.105 todd 134: if=${hn#/etc/hostname.}
135: test "$if" = "*" && continue
1.113 david 136:
1.146 ! rpe 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:
1.146 ! rpe 144: # Start wanted ifs.
1.105 todd 145: test "$sif" = "ALL" -o \
146: "$sif" = "${if%%[0-9]*}" \
147: && ifstart $if
148: done
149: done
150: }
151:
1.146 ! rpe 152: # Re-read rc.subr if we are not inside /etc/rc.
1.140 robert 153: [ -n ${INRC} ] && FUNCS_ONLY=1 . /etc/rc.d/rc.subr
154: _rc_parse_conf
1.1 deraadt 155:
1.83 miod 156: # If we were invoked with a list of interface names, just reconfigure these
157: # interfaces (or bridges) and return.
1.135 rpe 158: if [[ $1 == autoboot ]]; then
1.83 miod 159: shift
160: fi
161: if [ $# -gt 0 ]; then
162: while [ $# -gt 0 ]; do
1.127 deraadt 163: ifstart $1
1.83 miod 164: shift
165: done
166: return
167: fi
168:
169: # Otherwise, process with the complete network initialization.
170:
1.146 ! rpe 171: # /etc/myname contains my symbolic name.
1.87 henning 172: if [ -f /etc/myname ]; then
1.100 millert 173: hostname=`stripcom /etc/myname`
1.87 henning 174: hostname $hostname
175: else
176: hostname=`hostname`
1.4 dm 177: fi
178:
1.131 sobrado 179: # Set the address for the loopback interface. Bringing the interface up,
180: # automatically invokes the IPv6 address ::1.
1.129 henning 181: ifconfig lo0 inet 127.0.0.1/8
1.24 kstailey 182:
1.54 itojun 183: if ifconfig lo0 inet6 >/dev/null 2>&1; then
184: # IPv6 configurations.
185: ip6kernel=YES
186:
1.83 miod 187: # Disallow link-local unicast dest without outgoing scope identifiers.
1.98 deraadt 188: route -qn add -inet6 fe80:: -prefixlen 10 ::1 -reject > /dev/null
1.66 itojun 189:
1.83 miod 190: # Disallow site-local unicast dest without outgoing scope identifiers.
1.66 itojun 191: # If you configure site-locals without scope id (it is permissible
192: # config for routers that are not on scope boundary), you may want
193: # to comment the line out.
1.98 deraadt 194: route -qn add -inet6 fec0:: -prefixlen 10 ::1 -reject > /dev/null
1.66 itojun 195:
1.83 miod 196: # Disallow "internal" addresses to appear on the wire.
1.98 deraadt 197: route -qn add -inet6 ::ffff:0.0.0.0 -prefixlen 96 ::1 -reject > /dev/null
1.66 itojun 198:
1.83 miod 199: # Disallow packets to malicious IPv4 compatible prefix.
1.98 deraadt 200: route -qn add -inet6 ::224.0.0.0 -prefixlen 100 ::1 -reject > /dev/null
201: route -qn add -inet6 ::127.0.0.0 -prefixlen 104 ::1 -reject > /dev/null
202: route -qn add -inet6 ::0.0.0.0 -prefixlen 104 ::1 -reject > /dev/null
203: route -qn add -inet6 ::255.0.0.0 -prefixlen 104 ::1 -reject > /dev/null
1.66 itojun 204:
1.83 miod 205: # Disallow packets to malicious 6to4 prefix.
1.98 deraadt 206: route -qn add -inet6 2002:e000:: -prefixlen 20 ::1 -reject > /dev/null
207: route -qn add -inet6 2002:7f00:: -prefixlen 24 ::1 -reject > /dev/null
208: route -qn add -inet6 2002:0000:: -prefixlen 24 ::1 -reject > /dev/null
209: route -qn add -inet6 2002:ff00:: -prefixlen 24 ::1 -reject > /dev/null
1.115 itojun 210:
211: # Disallow packets without scope identifier.
212: route -qn add -inet6 ff01:: -prefixlen 16 ::1 -reject > /dev/null
213: route -qn add -inet6 ff02:: -prefixlen 16 ::1 -reject > /dev/null
1.66 itojun 214:
215: # Completely disallow packets to IPv4 compatible prefix.
1.146 ! rpe 216: #
1.66 itojun 217: # This may conflict with RFC1933 under following circumstances:
218: # (1) An IPv6-only KAME node tries to originate packets to IPv4
1.77 deraadt 219: # compatible destination. The KAME node has no IPv4 compatible
1.66 itojun 220: # support. Under RFC1933, it should transmit native IPv6
221: # packets toward IPv4 compatible destination, hoping it would
222: # reach a router that forwards the packet toward auto-tunnel
223: # interface.
1.77 deraadt 224: # (2) An IPv6-only node originates a packet to an IPv4 compatible
1.66 itojun 225: # destination. A KAME node is acting as an IPv6 router, and
226: # asked to forward it.
1.146 ! rpe 227: #
1.77 deraadt 228: # Due to rare use of IPv4 compatible addresses, and security issues
1.66 itojun 229: # with it, we disable it by default.
1.98 deraadt 230: route -qn add -inet6 ::0.0.0.0 -prefixlen 96 ::1 -reject > /dev/null
1.56 itojun 231:
232: rtsolif=""
1.54 itojun 233: else
234: ip6kernel=NO
235: fi
236:
1.105 todd 237:
238: # Configure all the non-loopback interfaces which we know about, but
1.127 deraadt 239: # do not start interfaces which must be delayed. Refer to hostname.if(5)
1.132 mpf 240: ifmstart "" "trunk svlan vlan carp gif gre pfsync pppoe tun bridge"
1.56 itojun 241:
1.118 brad 242: # The trunk interfaces need to come up first in this list.
1.132 mpf 243: # The (s)vlan interfaces need to come up after trunk.
1.118 brad 244: # Configure all the carp interfaces which we know about before default route.
1.132 mpf 245: ifmstart "trunk svlan vlan carp"
1.118 brad 246:
1.56 itojun 247: if [ "$ip6kernel" = "YES" -a "x$rtsolif" != "x" ]; then
1.145 florian 248: echo "IPv6 autoconf:$rtsolif"
249: ifconfig $rtsolif inet6 autoconf
1.57 itojun 250: fi
1.102 mcbride 251:
1.138 todd 252: # Look for default routes in /etc/mygate.
1.110 todd 253: [[ -z $dhcpif ]] && stripcom /etc/mygate | while read gw; do
254: [[ $gw == @(*:*) ]] && continue
255: route -qn delete default > /dev/null 2>&1
256: route -qn add -host default $gw && break
257: done
258: [[ -z $rtsolif ]] && stripcom /etc/mygate | while read gw; do
259: [[ $gw == !(*:*) ]] && continue
260: route -qn delete -inet6 default > /dev/null 2>&1
261: route -qn add -host -inet6 default $gw && break
262: done
1.44 deraadt 263:
1.48 niklas 264: # Multicast routing.
265: #
266: # The routing to the 224.0.0.0/4 net is setup according to these rules:
267: # multicast_host multicast_router route comment
268: # NO NO -reject no multicast
269: # NO YES none installed daemon will run
270: # YES/interface NO -interface YES=def. iface
271: # Any other combination -reject config error
1.112 reyk 272: route -qn delete 224.0.0.0/4 > /dev/null 2>&1
1.48 niklas 273: case "$multicast_host:$multicast_router" in
274: NO:NO)
1.91 deraadt 275: route -qn add -net 224.0.0.0/4 -interface 127.0.0.1 -reject > /dev/null
1.67 deraadt 276: ;;
1.48 niklas 277: NO:YES)
278: ;;
279: *:NO)
1.112 reyk 280: maddr=`if [ "$multicast_host" = "YES" ]; then
1.91 deraadt 281: ed -s '!route -qn show -inet' <<EOF
1.48 niklas 282: /^default/p
283: EOF
284: else
285: ed -s "!ifconfig $multicast_host" <<EOF
286: /^ inet /p
287: EOF
1.112 reyk 288: fi 2> /dev/null`
289: if [ "X${maddr}" != "X" ]; then
290: set $maddr
291: route -qn add -net 224.0.0.0/4 -interface $2 > /dev/null
292: else
293: route -qn add -net 224.0.0.0/4 -interface \
294: 127.0.0.1 -reject > /dev/null
295: fi
1.67 deraadt 296: ;;
1.48 niklas 297: *:*)
298: echo 'config error, multicasting disabled until rc.conf is fixed'
1.91 deraadt 299: route -qn add -net 224.0.0.0/4 -interface 127.0.0.1 -reject > /dev/null
1.67 deraadt 300: ;;
1.48 niklas 301: esac
1.83 miod 302:
1.105 todd 303:
1.125 jdixon 304: # Configure PPPoE, GIF, GRE and TUN interfaces, delayed because they require
305: # routes to be set. TUN might depend on PPPoE, and GIF or GRE may depend on
306: # either of them.
1.127 deraadt 307: ifmstart "pppoe tun gif gre bridge"
1.92 deraadt 308:
1.146 ! rpe 309: # Reject 127/8 other than 127.0.0.1.
1.92 deraadt 310: route -qn add -net 127 127.0.0.1 -reject > /dev/null
1.116 david 311:
312: if [ "$ip6kernel" = "YES" ]; then
1.146 ! rpe 313: # This is to make sure DAD is completed before going further.
1.124 markus 314: count=0
315: while [ $((count++)) -lt 10 -a "x"`sysctl -n net.inet6.ip6.dad_pending` != "x0" ]; do
316: sleep 1
317: done
1.116 david 318: fi