Annotation of src/etc/netstart, Revision 1.149
1.1 deraadt 1: #!/bin/sh -
2: #
1.149 ! rpe 3: # $OpenBSD: netstart,v 1.148 2015/07/19 01:37:45 rpe 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"
1.147 rpe 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.}
1.149 ! rpe 135: [ "$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 $2; do
1.149 ! rpe 140: [ "$xf" = "${if%%[0-9]*}" ] && s="1" && break
1.105 todd 141: done
1.149 ! rpe 142: [ "$s" = "1" ] && continue
1.105 todd 143:
1.146 rpe 144: # Start wanted ifs.
1.149 ! rpe 145: [ "$sif" = "ALL" -o "$sif" = "${if%%[0-9]*}" ] &&
! 146: ifstart $if
1.105 todd 147: done
148: done
149: }
150:
1.148 rpe 151: # Source rc.subr and parse rc.conf only if we are not inside /etc/rc.
152: if [ -z "${INRC}" ]; then
153: FUNCS_ONLY=1 . /etc/rc.d/rc.subr
154: _rc_parse_conf
155: fi
1.1 deraadt 156:
1.83 miod 157: # If we were invoked with a list of interface names, just reconfigure these
158: # interfaces (or bridges) and return.
1.135 rpe 159: if [[ $1 == autoboot ]]; then
1.83 miod 160: shift
161: fi
162: if [ $# -gt 0 ]; then
163: while [ $# -gt 0 ]; do
1.127 deraadt 164: ifstart $1
1.83 miod 165: shift
166: done
167: return
168: fi
169:
170: # Otherwise, process with the complete network initialization.
171:
1.146 rpe 172: # /etc/myname contains my symbolic name.
1.87 henning 173: if [ -f /etc/myname ]; then
1.100 millert 174: hostname=`stripcom /etc/myname`
1.87 henning 175: hostname $hostname
176: else
177: hostname=`hostname`
1.4 dm 178: fi
179:
1.131 sobrado 180: # Set the address for the loopback interface. Bringing the interface up,
181: # automatically invokes the IPv6 address ::1.
1.129 henning 182: ifconfig lo0 inet 127.0.0.1/8
1.24 kstailey 183:
1.54 itojun 184: if ifconfig lo0 inet6 >/dev/null 2>&1; then
185: # IPv6 configurations.
186: ip6kernel=YES
187:
1.83 miod 188: # Disallow link-local unicast dest without outgoing scope identifiers.
1.147 rpe 189: route -qn add -inet6 fe80:: -prefixlen 10 ::1 -reject >/dev/null
1.66 itojun 190:
1.83 miod 191: # Disallow site-local unicast dest without outgoing scope identifiers.
1.66 itojun 192: # If you configure site-locals without scope id (it is permissible
193: # config for routers that are not on scope boundary), you may want
194: # to comment the line out.
1.147 rpe 195: route -qn add -inet6 fec0:: -prefixlen 10 ::1 -reject >/dev/null
1.66 itojun 196:
1.83 miod 197: # Disallow "internal" addresses to appear on the wire.
1.147 rpe 198: route -qn add -inet6 ::ffff:0.0.0.0 -prefixlen 96 ::1 -reject >/dev/null
1.66 itojun 199:
1.83 miod 200: # Disallow packets to malicious IPv4 compatible prefix.
1.147 rpe 201: route -qn add -inet6 ::224.0.0.0 -prefixlen 100 ::1 -reject >/dev/null
202: route -qn add -inet6 ::127.0.0.0 -prefixlen 104 ::1 -reject >/dev/null
203: route -qn add -inet6 ::0.0.0.0 -prefixlen 104 ::1 -reject >/dev/null
204: route -qn add -inet6 ::255.0.0.0 -prefixlen 104 ::1 -reject >/dev/null
1.66 itojun 205:
1.83 miod 206: # Disallow packets to malicious 6to4 prefix.
1.147 rpe 207: route -qn add -inet6 2002:e000:: -prefixlen 20 ::1 -reject >/dev/null
208: route -qn add -inet6 2002:7f00:: -prefixlen 24 ::1 -reject >/dev/null
209: route -qn add -inet6 2002:0000:: -prefixlen 24 ::1 -reject >/dev/null
210: route -qn add -inet6 2002:ff00:: -prefixlen 24 ::1 -reject >/dev/null
1.115 itojun 211:
212: # Disallow packets without scope identifier.
1.147 rpe 213: route -qn add -inet6 ff01:: -prefixlen 16 ::1 -reject >/dev/null
214: route -qn add -inet6 ff02:: -prefixlen 16 ::1 -reject >/dev/null
1.66 itojun 215:
216: # Completely disallow packets to IPv4 compatible prefix.
1.146 rpe 217: #
1.66 itojun 218: # This may conflict with RFC1933 under following circumstances:
219: # (1) An IPv6-only KAME node tries to originate packets to IPv4
1.77 deraadt 220: # compatible destination. The KAME node has no IPv4 compatible
1.66 itojun 221: # support. Under RFC1933, it should transmit native IPv6
222: # packets toward IPv4 compatible destination, hoping it would
223: # reach a router that forwards the packet toward auto-tunnel
224: # interface.
1.77 deraadt 225: # (2) An IPv6-only node originates a packet to an IPv4 compatible
1.66 itojun 226: # destination. A KAME node is acting as an IPv6 router, and
227: # asked to forward it.
1.146 rpe 228: #
1.77 deraadt 229: # Due to rare use of IPv4 compatible addresses, and security issues
1.66 itojun 230: # with it, we disable it by default.
1.147 rpe 231: route -qn add -inet6 ::0.0.0.0 -prefixlen 96 ::1 -reject >/dev/null
1.56 itojun 232:
233: rtsolif=""
1.54 itojun 234: else
235: ip6kernel=NO
236: fi
237:
1.105 todd 238:
239: # Configure all the non-loopback interfaces which we know about, but
1.127 deraadt 240: # do not start interfaces which must be delayed. Refer to hostname.if(5)
1.132 mpf 241: ifmstart "" "trunk svlan vlan carp gif gre pfsync pppoe tun bridge"
1.56 itojun 242:
1.118 brad 243: # The trunk interfaces need to come up first in this list.
1.132 mpf 244: # The (s)vlan interfaces need to come up after trunk.
1.118 brad 245: # Configure all the carp interfaces which we know about before default route.
1.132 mpf 246: ifmstart "trunk svlan vlan carp"
1.118 brad 247:
1.56 itojun 248: if [ "$ip6kernel" = "YES" -a "x$rtsolif" != "x" ]; then
1.145 florian 249: echo "IPv6 autoconf:$rtsolif"
250: ifconfig $rtsolif inet6 autoconf
1.57 itojun 251: fi
1.102 mcbride 252:
1.138 todd 253: # Look for default routes in /etc/mygate.
1.110 todd 254: [[ -z $dhcpif ]] && stripcom /etc/mygate | while read gw; do
255: [[ $gw == @(*:*) ]] && continue
1.147 rpe 256: route -qn delete default >/dev/null 2>&1
1.110 todd 257: route -qn add -host default $gw && break
258: done
259: [[ -z $rtsolif ]] && stripcom /etc/mygate | while read gw; do
260: [[ $gw == !(*:*) ]] && continue
1.147 rpe 261: route -qn delete -inet6 default >/dev/null 2>&1
1.110 todd 262: route -qn add -host -inet6 default $gw && break
263: done
1.44 deraadt 264:
1.48 niklas 265: # Multicast routing.
266: #
267: # The routing to the 224.0.0.0/4 net is setup according to these rules:
268: # multicast_host multicast_router route comment
269: # NO NO -reject no multicast
270: # NO YES none installed daemon will run
271: # YES/interface NO -interface YES=def. iface
272: # Any other combination -reject config error
1.147 rpe 273: route -qn delete 224.0.0.0/4 >/dev/null 2>&1
1.48 niklas 274: case "$multicast_host:$multicast_router" in
275: NO:NO)
1.147 rpe 276: route -qn add -net 224.0.0.0/4 -interface 127.0.0.1 -reject >/dev/null
1.67 deraadt 277: ;;
1.48 niklas 278: NO:YES)
279: ;;
280: *:NO)
1.112 reyk 281: maddr=`if [ "$multicast_host" = "YES" ]; then
1.91 deraadt 282: ed -s '!route -qn show -inet' <<EOF
1.48 niklas 283: /^default/p
284: EOF
285: else
286: ed -s "!ifconfig $multicast_host" <<EOF
287: /^ inet /p
288: EOF
1.147 rpe 289: fi 2>/dev/null`
1.112 reyk 290: if [ "X${maddr}" != "X" ]; then
291: set $maddr
1.147 rpe 292: route -qn add -net 224.0.0.0/4 -interface $2 >/dev/null
1.112 reyk 293: else
294: route -qn add -net 224.0.0.0/4 -interface \
1.147 rpe 295: 127.0.0.1 -reject >/dev/null
1.112 reyk 296: fi
1.67 deraadt 297: ;;
1.48 niklas 298: *:*)
299: echo 'config error, multicasting disabled until rc.conf is fixed'
1.147 rpe 300: route -qn add -net 224.0.0.0/4 -interface 127.0.0.1 -reject >/dev/null
1.67 deraadt 301: ;;
1.48 niklas 302: esac
1.83 miod 303:
1.105 todd 304:
1.125 jdixon 305: # Configure PPPoE, GIF, GRE and TUN interfaces, delayed because they require
306: # routes to be set. TUN might depend on PPPoE, and GIF or GRE may depend on
307: # either of them.
1.127 deraadt 308: ifmstart "pppoe tun gif gre bridge"
1.92 deraadt 309:
1.146 rpe 310: # Reject 127/8 other than 127.0.0.1.
1.147 rpe 311: route -qn add -net 127 127.0.0.1 -reject >/dev/null
1.116 david 312:
313: if [ "$ip6kernel" = "YES" ]; then
1.146 rpe 314: # This is to make sure DAD is completed before going further.
1.124 markus 315: count=0
316: while [ $((count++)) -lt 10 -a "x"`sysctl -n net.inet6.ip6.dad_pending` != "x0" ]; do
317: sleep 1
318: done
1.116 david 319: fi
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